技术领域technical field
本发明涉及一种海洋工程领域连接海底管道时用的对中装置，特别是涉及一种海底管道水下连接作业中的管段轴向对中装置。The invention relates to a centering device for connecting submarine pipelines in the field of marine engineering, in particular to an axial centering device for pipe sections in underwater connection operations of submarine pipelines.
背景技术Background technique
深水油气田的水下连接技术中使用ROV(Remotely Operated Vehicle)，并需要研发专门的水下连接器，水下连接器通常既能用于垂直连接，也可以用作水平连接，所不同的是连接作业过程中所使用的施工作业机具和难易程度以及作业成本。ROV (Remotely Operated Vehicle) is used in the underwater connection technology of deepwater oil and gas fields, and special underwater connectors need to be developed. Underwater connectors can usually be used for both vertical and horizontal connections. The difference is that the connection The construction equipment used in the operation process, the degree of difficulty and the operation cost.
深水油气田开发中，垂直连接技术和水平连接技术的施工作业过程最大区别在于对中装置及其对中方法，垂直连接作业的对中包括粗对中和精对中两种。其中，粗对中的方法为，施工作业机具的上方设有对中喇叭口，且对中喇叭口内布置圆环，连接作业中将圆环套入施工作业机具下毂座的对中机构。精对中的方法为，施工作业机具的上毂座和下毂座依据止口结构的配合而保持同轴心的状态，并通过密封圈实现连接部位的密封。水平连接作业的导向对中包括ROVCON对中技术、STABCON对中技术和UCON对中技术，ROVCON对中技术采用部分吊绳作为导向绳进行对中，导向绳的一端悬挂于施工作业机具毂座的两侧，而导向绳的另一端则利用ROV逐步收紧，从而使水下连接器接近毂座并实现对中。STABCON对中技术是设计专门的导向锥筒作为垂直导向机构，水下连接器首先依据导向锥筒完成垂直导向并对接至施工作业机具毂座的垂直接收器上，而后依靠ROV完成水下连接器的水平推进，而最终达到对中的目的。UCON对中技术由FMC公司设计，它与STABCON对中技术类似，设计专门的导引槽而使水下连接器完成垂直导向，并对接至施工作业机具毂座的定位器上，而后依靠液压缸完成水下连接器的水平推进并对中。In the development of deep-water oil and gas fields, the biggest difference between the vertical connection technology and the horizontal connection technology is the alignment device and its alignment method. The alignment of the vertical connection operation includes rough alignment and fine alignment. Among them, the rough centering method is that a centering bell mouth is provided above the construction work tool, and a ring is arranged in the centering bell mouth, and the ring is inserted into the centering mechanism of the lower hub of the construction work tool during the connection operation. The method of fine alignment is that the upper hub seat and the lower hub seat of the construction work tool are kept in the coaxial state according to the cooperation of the seam structure, and the sealing of the joint part is realized through the sealing ring. The guide alignment of horizontal connection operation includes ROVCON centering technology, STABCON centering technology and UCON centering technology. ROVCON centering technology uses part of the lifting rope as the guide rope for centering. One end of the guide rope is hung on the hub seat of the construction operation tool. On both sides, while the other end of the guide rope is gradually tightened by the ROV, so that the underwater connector can approach the hub and achieve centering. STABCON centering technology is to design a special guide cone as a vertical guide mechanism. The underwater connector first completes the vertical guidance according to the guide cone and connects to the vertical receiver of the construction tool hub, and then relies on the ROV to complete the underwater connector. The horizontal advance, and finally achieve the purpose of the center. The UCON centering technology is designed by FMC, which is similar to the STABCON centering technology. A special guide groove is designed so that the underwater connector can be vertically guided and docked to the locator of the construction tool hub, and then rely on the hydraulic cylinder Complete the horizontal propulsion and centering of the underwater connector.
目前，国外已有多家公司具备了水下连接器的设计和制造技术，而且产品呈现多样化。由于我国深水油气的开发起步较晚，水下连接海底管道技术及其对中装置尚处于研发阶段，还不具备独自完成深海作业的能力。At present, many foreign companies have the design and manufacturing technology of underwater connectors, and their products are diversified. Due to the late start of my country's deep-water oil and gas development, the technology of underwater connection of submarine pipelines and its centering devices are still in the research and development stage, and they do not yet have the ability to independently complete deep-sea operations.
发明内容Contents of the invention
为了有效解决海底管道的水下快速连接问题并克服国内现有海底管道水下对中技术及其作业方案存在的缺陷和不足，本发明的目的是提供一种海底管道水下连接作业时用的管段轴向对中装置。该管段轴向对中装置采用全对称构造，并依据海管卡紧器的快速卡紧、管段对中器的对中定位、管段支撑器的轴向支撑、升降限位器的双向限位以及液缸顶升器和液缸周推器提供的推进动力，实现海底管道两管段之间的轴向对中。In order to effectively solve the problem of underwater quick connection of submarine pipelines and overcome the defects and deficiencies in the existing domestic submarine pipeline underwater centering technology and its operation scheme, the purpose of the present invention is to provide a submarine pipeline underwater connection operation. Axial centering device for pipe sections. The axial centering device of the pipe section adopts a fully symmetrical structure, and is based on the quick clamping of the sea pipe clamp, the centering positioning of the pipe centering device, the axial support of the pipe section support, the bidirectional limit of the lifting limiter and the The propulsion power provided by the hydraulic cylinder jack and the hydraulic cylinder pusher realizes the axial alignment between the two pipe sections of the submarine pipeline.
本发明解决其技术问题所采用的技术方案是提供一种海底管道连接作业管段轴向对中装置，该管段轴向对中装置主要由海管卡紧器、管段对中器、管段支撑器、升降限位器、液缸顶升器和液缸周推器组成。该管段轴向对中装置整体设计为左右全对称构造，其海管卡紧器、管段对中器、管段支撑器和升降限位器的主体部件材质均选用超级双向不锈钢，海管卡紧器、管段支撑器、升降限位器、液缸顶升器和液缸周推器均采用分体式结构并沿轴向依次对称布置于管段对中器的两侧，而管段对中器则采用单体式结构，海管卡紧器和管段支撑器依次放置于管段对中器的上方和下方，升降限位器则置入管段对中器的对中筒内。The technical solution adopted by the present invention to solve the technical problem is to provide an axial centering device for connecting operation pipe sections of submarine pipelines. It consists of a lift limiter, a hydraulic cylinder jack and a hydraulic cylinder pusher. The overall design of the axial centering device of the pipe section is a left-right fully symmetrical structure. The materials of the main parts of the sea pipe clamp, pipe section centering device, pipe section support and lifting limiter are all made of super two-way stainless steel. , pipe section supporter, lifting limiter, hydraulic cylinder jacking device and hydraulic cylinder pusher all adopt split structure and are symmetrically arranged on both sides of the pipe section centering device sequentially along the axial direction, while the pipe section centering device adopts a single One-piece structure, the sea pipe clamp and pipe section support are placed above and below the pipe section centering device in sequence, and the lifting limiter is placed in the centering cylinder of the pipe section centering device.
海管卡紧器采用截面呈R形的卧式壳体，并依据液缸周推器提供的推进动力完成前卡体和后卡体与海底管道间的水下快速卡紧，它包括前卡体、后卡体、卡紧支托、加强座、卡锁块和卡锁体。The subsea pipe clamp adopts a horizontal shell with an R-shaped cross section, and completes the underwater fast clamping between the front clamp body and the rear clamp body and the submarine pipeline according to the propulsion power provided by the hydraulic cylinder pusher. It includes the front clamp Body, rear card body, clamping support, reinforcing seat, locking block and locking body.
前卡体和后卡体分别套于海底管道的前部和后部，前卡体采用半剖式筒体，而后卡体则采用半剖式筒体和矩形钢板相结合的构造，后卡体矩形钢板的下端依次设置矩形连接板和L形角槽，且前卡体和后卡体的半剖式筒体对称布置并整合成一个完整的厚壁筒体。The front card body and the rear card body are set on the front and rear of the submarine pipeline respectively. The front card body adopts a half-section cylinder, while the rear card body adopts a structure combining a half-section cylinder and a rectangular steel plate. The rear card body The lower end of the rectangular steel plate is provided with a rectangular connecting plate and an L-shaped corner groove in turn, and the half-section cylinders of the front card body and the rear card body are symmetrically arranged and integrated into a complete thick-walled cylinder body.
前卡体和后卡体的顶部设置对称分布的两组卡紧销套，前卡体的每组卡紧销套沿轴向等间距排列两个分卡紧销套，而后卡体的每组卡紧销套沿轴向等间距排列三个分卡紧销套，且前卡体和后卡体的分卡紧销套之间交错布置并配置卡紧销轴，从而将前卡体和后卡体铰接在一起。前卡体和后卡体半剖式筒体的上部和下部设置对称分布的两组圆台，前卡体和后卡体半剖式筒体上部的每组圆台沿轴向等间距排列三个锥形圆台，前卡体半剖式筒体下部的每组圆台沿轴向等间距排列两个锥形圆台，而后卡体半剖式筒体下部的每组圆台沿轴向等间距排列两个柱状圆台，每个锥形圆台和柱状圆台的中央部位设有长孔眼并配置卡紧螺柱，从而实现前卡体和后卡体与海底管道之间的连接。The tops of the front card body and the rear card body are provided with two sets of clamping pin sleeves symmetrically distributed, and each set of clamping pin sleeves of the front The clamping pin sleeves are arranged in three sub-clamping pin sleeves at equal intervals along the axial direction, and the sub-clamping pin sleeves of the front clamping body and the rear clamping body are alternately arranged and the clamping pin shafts are arranged, so that the front clamping body and the rear clamping body The card bodies are hinged together. The upper and lower parts of the front card body and the rear card body half-section cylinder are provided with two groups of circular platforms symmetrically distributed, and each group of circular platforms on the upper part of the front card body and rear card body half-section cylinder is arranged with three cones at equal intervals along the axial direction. Each group of round tables in the lower part of the half-section cylinder body of the front card body is arranged with two conical round tables at equal intervals along the axial direction, and each group of round tables at the lower part of the half-section cylinder body of the rear card body is arranged in two columnar tables at equal intervals in the axial direction. For the circular platform, the central part of each conical circular platform and columnar circular platform is provided with a long hole and a clamping stud is arranged, so as to realize the connection between the front card body and the rear card body and the submarine pipeline.
后卡体与加强座的结合部位自上而下依次设有卡紧圆孔和条形卡槽，后卡体卡紧圆孔的位置和规格与后卡体的柱状圆台相同，同时后卡体的条形卡槽实现加强座的定位。The joint part of the rear card body and the reinforcing seat is provided with clamping round holes and bar-shaped card slots in sequence from top to bottom. The bar-shaped card slot realizes the positioning of the reinforcement seat.
前卡体半剖式筒体的下部设有沿轴向对称布置的两个卡锁块，卡锁块由方形钢块加工而成，卡锁块的中央部位钻有变截面的圆形锁道，同时每个卡锁块的圆形锁道内均配有一个卡锁体，圆形锁道的环腔内壁进行精细加工，且圆形锁道的两侧通过螺纹连接而分别嵌入卡锁体的卡锁板。后卡体半剖式筒体的下部设有与卡锁块相配合的U形锁槽，后卡体U形锁槽的两侧锁槽面上铣有楔形坡口，同时U形锁槽的中央部位钻有等截面的圆形锁孔。The lower part of the half-section cylinder of the front card body is provided with two locking blocks symmetrically arranged along the axial direction. The locking blocks are processed from square steel blocks, and the central part of the locking blocks is drilled with a circular lockway with variable cross-section. At the same time, the circular lock channel of each lock block is equipped with a lock body, the inner wall of the ring cavity of the circular lock channel is finely processed, and the two sides of the circular lock channel are respectively embedded in the lock body through threaded connection. Snap lock plate. The lower part of the half-section cylinder body of the rear card body is provided with a U-shaped lock groove that matches the locking block, and wedge-shaped grooves are milled on both sides of the U-shaped lock groove of the rear card body. At the same time, the U-shaped lock groove The central part is drilled with a circular keyhole of equal section.
卡锁体实现前卡体和后卡体的水下快速锁紧，它由对称布置的两个卡锁芯和卡锁板以及一个卡锁簧组成。卡锁板的中央部位钻有圆形锁眼，卡锁芯采用阶梯轴结构，其材质选用35CrMo，它包含卡锁销和卡锁肩两部分，卡锁芯中的卡锁销分别与后卡体U形锁槽的圆形锁孔和卡锁板的圆形锁眼之间精密配合而构成移动副，同时卡锁销的端面上铣有与后卡体U形锁槽相对应的楔形坡口。卡锁芯中的卡锁肩与卡锁块的圆形锁道之间精密配合而构成移动副，同时卡锁肩内侧的截面变化处形成轴肩并定位贯穿其内的卡锁簧，由此依据卡锁簧的伸缩运动实现卡锁体的自动锁紧功能。The locking body realizes the underwater fast locking of the front locking body and the rear locking body, and it is composed of two locking cores, locking plates and a locking spring symmetrically arranged. The central part of the lock plate is drilled with a circular keyhole. The lock core adopts a stepped shaft structure, and its material is 35CrMo. It includes two parts: the lock pin and the shoulder. The round lock hole of the body U-shaped lock groove and the round lock hole of the card lock plate are precisely matched to form a moving pair. At the same time, the end surface of the card lock pin is milled with a wedge-shaped slope corresponding to the U-shaped lock groove of the rear card body. mouth. The locking shoulder in the locking core and the circular lock channel of the locking block are precisely matched to form a moving pair. At the same time, the cross-sectional change inside the locking shoulder forms a shaft shoulder and positions the locking spring that runs through it. The automatic locking function of the locking body is realized according to the telescopic movement of the locking spring.
加强座由矩形钢板加工而成，其下端依次设有与后卡体相匹配的矩形连接板和L形角槽，且加强座和后卡体的L形角槽对称布置而形成U形沟槽，加强座和后卡体的矩形连接板均设有等间距排列的圆形孔眼并配置对中螺柱，从而实现海管卡紧器与管段对中器之间的连接。加强座与后卡体的结合部位自上而下依次设有卡紧螺孔和条形卡块，加强座的条形卡块与后卡体的条形卡槽相配合，加强座的卡紧螺孔与后卡体卡紧圆孔的位置相同并配置加强螺柱，从而实现加强座与后卡体之间的连接。The reinforcing seat is processed by rectangular steel plates, and its lower end is provided with a rectangular connecting plate and an L-shaped corner groove matching the rear card body in turn, and the L-shaped corner grooves of the reinforcing seat and the rear card body are symmetrically arranged to form a U-shaped groove , the rectangular connecting plate of the reinforcing seat and the rear card body are equipped with circular holes arranged at equal intervals and centering studs are arranged, so as to realize the connection between the sea pipe clamp and the pipe centering device. The joint part of the reinforcing seat and the rear card body is provided with clamping screw holes and bar-shaped clamping blocks sequentially from top to bottom. The position of the screw hole is the same as that of the clamping round hole of the rear card body, and a reinforcing stud is arranged, so as to realize the connection between the reinforcing seat and the rear card body.
卡紧支托分为三组并沿轴向等间距排列于前卡体和后卡体的顶部，且三组卡紧支托与两组卡紧销套之间交错布置，海管卡紧器两侧卡紧支托的端面分别与前卡体和后卡体以及加强座的两侧端面保持平齐。每组卡紧支托设有两个结构和规格相同的分卡紧支托，每个分卡紧支托由方形钢块和梯形钢块组合而成，且分卡紧支托的方形钢块沿垂向布置，同时分卡紧支托的梯形钢块倾斜放置并采用圆周焊的方式分别固定于前卡体和后卡体的上部，由此每组卡紧支托沿轴向呈扁U形。此外，分卡紧支托的方形钢块顶部设有矩形凹槽并配置周推销轴，从而实现卡紧支托与液缸周推器液压缸之间的铰接。The clamping supports are divided into three groups and arranged at equal intervals along the axial direction on the top of the front clamping body and the rear clamping body, and the three sets of clamping supports and two sets of clamping pin sleeves are alternately arranged. The end faces of the fastening brackets on both sides are respectively kept flush with the front and rear card bodies and the two side end faces of the reinforcing seat. Each set of clamping supports has two sub-clamping supports with the same structure and specifications, each sub-clamping support is composed of square steel blocks and trapezoidal steel blocks, and the sub-clamping supports are square steel blocks Arranged vertically, the trapezoidal steel blocks of the clamping supports are placed obliquely and fixed to the upper parts of the front clamping body and the rear clamping body respectively by means of circumferential welding, so that each set of clamping supports is flat U in the axial direction. shape. In addition, the top of the square steel block of the sub-clamping support is provided with a rectangular groove and configured with a pusher pin, so as to realize the hinge between the clamping support and the hydraulic cylinder of the hydraulic cylinder pusher.
管段对中器依据对中基体的基准定位作用并结合对中筒和支撑筒间的移动副实现海底管道两管段的水下对中定位，它包括对中基体、对中筒和对中支托。The pipe centering device realizes the underwater centering and positioning of the two pipe sections of the submarine pipeline according to the reference positioning function of the centering base and the moving pair between the centering cylinder and the supporting cylinder, which includes the centering base, the centering cylinder and the centering support .
对中基体采用卧式条形钢板，并依据水平基准面和柱形基准台实现基准定位作用，对中基体的上端面设置为水平基准面，并分别配置对称分布的后卡体和加强座，从而保证管段对中器上方的两套海管卡紧器处于同轴心对中状态。对中基体的前后两侧端面上钻有与加强座和后卡体的矩形连接板相配合的圆形孔眼，且对中基体的两侧面分别与加强座和后卡体的矩形连接板侧端面保持平齐，对中基体的长度大于两倍海管卡紧器的轴向长度与海底管道两管段的轴向间距之和。The centering base adopts horizontal strip-shaped steel plates, and realizes the reference positioning function based on the horizontal reference plane and the cylindrical reference platform. The upper end surface of the centering base is set as the horizontal reference plane, and the symmetrically distributed rear clamping body and reinforcing seat are respectively configured. Thereby ensuring that the two sets of sea pipe clamps above the pipe centering device are in the coaxial centering state. The front and rear sides of the centering base are drilled with circular holes that match the rectangular connecting plates of the reinforcing seat and the rear card body, and the two sides of the centering base are respectively connected to the side end faces of the rectangular connecting plates of the reinforcing seat and the rear card body. Keeping it flat, the length of the centering base is greater than twice the sum of the axial length of the sea pipe clamp and the axial distance between the two pipe sections of the seabed pipeline.
对中基体的下端面沿长度方向设有对称布置的两个柱形基准台，对中基体的柱形基准台上各配置一个对中筒，从而保证管段对中器下方的两套管段支撑器处于沿垂向平行状态，对中基体的柱形基准台直径和对中筒顶端法兰盘的外径均等于对中基体的宽度。The lower end surface of the centering base is provided with two symmetrically arranged cylindrical reference platforms along the length direction, and a centering cylinder is arranged on each of the cylindrical reference platforms of the centering base, so as to ensure that the two sets of pipe section supporters under the pipe centering device In a vertically parallel state, the diameter of the cylindrical reference platform of the centering base and the outer diameter of the flange at the top of the centering cylinder are equal to the width of the centering base.
对中筒采用立式厚壁筒体并与管段支撑器的支撑筒相配合，其顶端设置法兰盘且其底端车制有密封管螺纹，同时对中筒的筒壁下部设有上下两层对中孔，每层对中孔沿周向均布四个对中圆孔眼，各层间对中圆孔眼的位置相同，且对中筒的对中圆孔眼均与升降限位器的限位销相配合。The centering cylinder adopts a vertical thick-walled cylinder and cooperates with the support cylinder of the pipe section supporter. Its top is provided with a flange and its bottom is machined with a sealing pipe thread. Layer centering holes, each layer of centering holes are evenly distributed with four centering round holes along the circumferential direction, the positions of the centering round holes between each layer are the same, and the centering round holes of the centering cylinder are all aligned with the limit pins of the lifting limiter match.
对中支托沿周向均布于对中基体柱形基准台的外环面上，每个对中基体的柱形基准台上配置四对对中支托，且对中支托沿轴向的高度等于对中基体柱形基准台的台高。The centering supports are evenly distributed on the outer ring surface of the cylindrical reference platform of the centering base along the circumferential direction, and four pairs of centering supports are arranged on the cylindrical reference platform of each centering base, and the height of the centering supports along the axial direction It is equal to the height of the cylindrical reference platform of the centering base.
管段支撑器依据液缸顶升器提供的推进动力并结合支撑筒提供的升降滑道实现海底管道两管段的水下支撑，它包括支撑筒、防沉板和支撑支托。The pipe section supporter realizes the underwater support of the two pipe sections of the submarine pipeline based on the propulsion power provided by the hydraulic cylinder jack and the lifting slideway provided by the support cylinder. It includes a support cylinder, an anti-settling plate and a support bracket.
防沉板采用柱形钢板，并与海底泥面直接接触，用于防止整套对中装置沿垂向下沉。防沉板的下端面与对中基体上端的水平基准面保持平行，防沉板的上端面设有与对中基体的柱形基准台相同规格的圆柱形凸台，防沉板的圆柱形凸台上各配置一个支撑筒，防沉板的圆柱形凸台直径和支撑筒底端法兰盘的外径均等于对中基体的宽度。The anti-settling plate is made of cylindrical steel plate, which is in direct contact with the mud surface of the seabed, and is used to prevent the entire centering device from sinking vertically. The lower end surface of the anti-settling plate is kept parallel to the horizontal datum plane at the upper end of the centering base, and the upper end surface of the anti-settling plate is provided with a cylindrical boss with the same specifications as the cylindrical reference platform of the centering base, and the cylindrical boss of the anti-settling plate A supporting cylinder is respectively arranged on the platform, and the diameter of the cylindrical boss of the anti-settling plate and the outer diameter of the flange at the bottom of the supporting cylinder are equal to the width of the centering base.
支撑筒采用立式厚壁筒体，其底端设置法兰盘，且支撑筒的筒壁上部和下部各设有一层限位孔，每层限位孔沿周向均布四个限位圆孔眼，支撑筒的限位圆孔眼与对中筒的对中圆孔眼的孔径相同，支撑筒上层限位孔的各限位圆孔眼与升降限位器的限位销配合时即为液缸顶升器升程最大位移的终止点，同时支撑筒下层限位孔的各限位圆孔眼与升降限位器的限位销配合时即为液缸顶升器降程最大位移的终止点。The support cylinder adopts a vertical thick-walled cylinder, and the bottom end is provided with a flange, and the upper and lower parts of the cylinder wall of the support cylinder are respectively provided with a layer of limit holes, and each layer of limit holes is evenly distributed with four limit circular holes along the circumference. The limit circular holes of the support cylinder have the same diameter as the centering circular holes of the centering cylinder. When the limit circular holes of the upper layer limit holes of the support cylinder cooperate with the limit pins of the lifting limiter, it is the hydraulic cylinder jacking device. The end point of the maximum displacement of the lift is the end point of the maximum displacement of the hydraulic cylinder jack when the limit circular holes of the lower limit hole of the support cylinder cooperate with the limit pins of the lift limiter.
支撑筒的环腔内壁与对中筒的外环面之间精密配合而构成移动副，且支撑筒的环腔内壁位于上下两层限位孔之间的部位铣有拱形沟槽，从而为升降限位器提供沿轴向双向运动的升降滑道，同时支撑筒的拱形沟槽两侧端与限位孔的结合部位铣有拱形坡口。The inner wall of the ring cavity of the support cylinder and the outer ring surface of the centering cylinder are precisely matched to form a moving pair, and the inner wall of the ring cavity of the support cylinder is milled with an arched groove at the part between the upper and lower limit holes, so as to provide The lifting limiter provides a lifting slideway for two-way movement in the axial direction, and at the same time, an arched bevel is milled at the junction of both sides of the arched groove of the support cylinder and the limit hole.
支撑支托与对中支托的结构和数量相同，支撑支托沿周向均布于防沉板圆柱形凸台的外环面上，每对支撑支托和对应位置处的对中支托配置一套液缸顶升器的液压缸，支撑支托沿轴向的高度和防沉板圆柱形凸台的台高均等于对中支托的高度。每对支撑支托和对中支托含有两个分支托，每个分支托采用矩形钢块，支撑支托通过支撑销轴与液缸顶升器的液压缸缸筒相连接，而对中支托则通过对中销轴与液缸顶升器的液压缸活塞杆相连接。The structure and quantity of the supporting brackets and the centering brackets are the same. The supporting brackets are evenly distributed on the outer ring surface of the cylindrical boss of the anti-sinking plate along the circumferential direction. Each pair of supporting brackets and the centering brackets at the corresponding positions are equipped with a The hydraulic cylinder of the jacking device of the jacket cylinder, the height of the supporting bracket along the axial direction and the height of the cylindrical boss of the anti-sinking plate are all equal to the height of the centering bracket. Each pair of support brackets and centering brackets contains two branch brackets, each of which uses a rectangular steel block, and the support brackets are connected with the hydraulic cylinder cylinder of the hydraulic cylinder jack through the support pin shaft, while the centering bracket The support is connected with the hydraulic cylinder piston rod of the hydraulic cylinder jack through the centering pin.
升降限位器依据上下两层限位销实现管段支撑器轴向支撑过程中的双向限位，它包括限位本体、限位销和限位弹簧。The lifting limiter realizes the bidirectional limit during the axial support process of the pipe section supporter based on the upper and lower limit pins, and it includes a limit body, a limit pin and a limit spring.
限位本体采用变截面的环体，限位本体的底部设置环肩，限位本体的环肩通过螺纹连接实现升降限位器在对中筒环腔内壁中的固定连接，同时限位本体环肩的下端面与对中筒的下端面保持平齐。限位本体环肩上部的环体设有上下两层升降孔，每层升降孔沿周向均布四个升降圆孔眼，限位本体的升降圆孔眼与对中筒的对中圆孔眼的位置相对应，且限位本体升降孔的孔底部设置变截面凸台，限位本体变截面凸台的截面变化处实现限位弹簧内侧端的轴向定位。The limit body adopts a ring body with variable cross-section, and the bottom of the limit body is provided with a ring shoulder. The ring shoulder of the limit body is connected by a thread to realize the fixed connection of the lifting limiter in the inner wall of the ring cavity of the centering cylinder. At the same time, the limit body ring The lower end surface of the shoulder is flush with the lower end surface of the centering cylinder. The ring body on the upper part of the limit body ring shoulder is provided with upper and lower layers of lifting holes, and each layer of lifting holes is evenly distributed with four lifting round holes along the circumference. The lifting round holes of the limit body correspond to the positions of the centering round holes of the centering cylinder , and the bottom of the lifting hole of the limiting body is provided with a variable-section boss, and the section change of the variable-section boss of the limiting body realizes the axial positioning of the inner end of the limiting spring.
限位销采用阶梯轴结构，其材质选用35CrMo，限位销的外侧端面采用圆拱面并与支撑筒的拱形沟槽之间精密配合而构成沿支撑筒轴向的移动副。限位销圆拱面的一侧端铣有与支撑筒限位孔相对应的拱形坡口，且上层限位销的拱形坡口与支撑筒上层限位孔的拱形坡口相配合，同时下层限位销的拱形坡口与支撑筒下层限位孔的拱形坡口相配合。限位销的销体与限位本体的升降圆孔眼之间采用间隙配合，且限位销的销体同时与对中筒的对中圆孔眼和支撑筒的限位圆孔眼之间精密配合而构成沿对中筒和支撑筒径向的移动副。限位销的内侧端设置与限位本体升降孔相对应的变截面凸台，限位销变截面凸台的截面变化处实现限位弹簧外侧端的轴向定位。The limit pin adopts a stepped shaft structure, and its material is 35CrMo. The outer end surface of the limit pin adopts a circular arch surface and is precisely matched with the arch groove of the support cylinder to form a moving pair along the axis of the support cylinder. One side of the circular arch surface of the limit pin is milled with an arched groove corresponding to the limit hole of the support cylinder, and the arch groove of the upper limit pin matches the arch groove of the upper limit hole of the support cylinder , while the arched groove of the lower limit pin is matched with the arched groove of the lower limit hole of the support cylinder. The pin body of the limit pin and the lifting circular hole of the limit body adopt clearance fit, and the pin body of the limit pin is precisely matched with the centering circular hole of the centering cylinder and the limit circular hole of the support cylinder at the same time. It constitutes a moving pair along the radial direction of the centering cylinder and the supporting cylinder. The inner end of the limit pin is provided with a variable section boss corresponding to the lifting hole of the limit body, and the section change of the variable section boss of the limit pin realizes the axial positioning of the outer end of the limit spring.
依据限位弹簧的伸缩运动，当上层限位销插入支撑筒的上层限位孔内时，液缸顶升器达到最大升程，而当下层限位销插入支撑筒的下层限位孔内时，液缸顶升器达到最大降程，由此实现升降限位器的自动双向限位功能。According to the telescopic movement of the limit spring, when the upper limit pin is inserted into the upper limit hole of the support cylinder, the hydraulic cylinder lifter reaches the maximum lift, and when the lower limit pin is inserted into the lower limit hole of the support cylinder , the hydraulic cylinder jack reaches the maximum drop, thereby realizing the automatic bidirectional limit function of the lift limiter.
该管段轴向对中装置包含两套独立的液缸式推进系统，即液缸顶升器和液缸周推器，用来提供推进动力，实现海底管道管段的快速轴向对中。液缸顶升器通过对中支托与支撑支托实现管段对中器和管段支撑器之间的连接，并完成管段支撑器轴向支撑过程中的升降推进，液缸顶升器采用沿支撑筒周向均布的四个独立液压缸，各液压缸沿垂向放置。液缸周推器通过卡紧支托实现前卡体和后卡体之间的张开与合拢，并完成海管卡紧器水下快速卡紧过程中的水平推进，液缸周推器采用沿前卡体和后卡体轴向等间距排列的三个独立液压缸，且各液压缸沿水平方向布置。The pipe section axial centering device includes two sets of independent hydraulic cylinder propulsion systems, namely the hydraulic cylinder lifter and the hydraulic cylinder circumferential thruster, which are used to provide propulsion power and realize rapid axial centering of the subsea pipeline pipe section. The hydraulic cylinder jack realizes the connection between the pipe centering device and the pipe support through the centering support and the supporting support, and completes the lifting and advancing during the axial support of the pipe support. There are four independent hydraulic cylinders evenly distributed in the circumferential direction of the barrel, and each hydraulic cylinder is placed vertically. The hydraulic cylinder pusher realizes the opening and closing between the front clamping body and the rear clamping body by clamping the support, and completes the horizontal propulsion during the underwater fast clamping process of the sea pipe clamping device. The hydraulic cylinder thruster adopts Three independent hydraulic cylinders are arranged at equal intervals along the axis of the front card body and the rear card body, and each hydraulic cylinder is arranged along the horizontal direction.
所有独立液压缸的液压油均通过多路换向阀统一分配以实现液缸顶升器的自动同步升降推进和液缸周推器的自动同步水平推进功能，同时液压缸均采用活塞式液压油缸，通过其两端进液压油管路的通油和出液压油管路的回油实现双向推进运动。液缸顶升器的液压缸通过对中销轴和支撑销轴分别与管段对中器和管段支撑器进行铰接，而液缸周推器的液压缸则通过周推销轴与海管卡紧器锚定在一起，卡紧销轴、对中销轴和支撑销轴的轴端加工有盲端螺孔并配置六角头螺钉进行固定，而周推销轴的轴端则配有开口销加以固定。The hydraulic oil of all independent hydraulic cylinders is uniformly distributed through multi-way reversing valves to realize the automatic synchronous lifting propulsion of the hydraulic cylinder jack and the automatic synchronous horizontal propulsion of the hydraulic cylinder pusher. At the same time, the hydraulic cylinders are all piston hydraulic cylinders. The two-way propulsion movement is realized through the oil passage of the hydraulic oil pipeline at both ends and the oil return of the hydraulic oil pipeline at both ends. The hydraulic cylinder of the hydraulic cylinder jack is hinged with the pipe centering device and the pipe supporter respectively through the centering pin and the supporting pin, while the hydraulic cylinder of the hydraulic cylinder pusher is connected with the sea pipe clamp through the pushing pin Anchored together, the shaft ends of the clamping pin, centering pin and support pin are machined with blind-end screw holes and equipped with hexagon head screws for fixing, while the shaft ends of the push pin are equipped with cotter pins for fixing.
本发明所能达到的技术效果是，该管段轴向对中装置采用全对称构造，并依据海管卡紧器的快速卡紧、管段对中器的对中定位、管段支撑器的轴向支撑、升降限位器的双向限位以及液缸顶升器和液缸周推器提供的推进动力，实现海底管道两管段之间的轴向对中；海管卡紧器采用截面呈R形的卧式壳体，并依据液缸周推器提供的推进动力完成前卡体和后卡体与海底管道间的水下快速卡紧，管段对中器依据对中基体的基准定位作用并结合对中筒和支撑筒间的移动副完成海底管道两管段的水下对中定位，管段支撑器依据液缸顶升器提供的推进动力并结合支撑筒提供的升降滑道完成海底管道两管段的轴向支撑，升降限位器依据上下两层限位销实现管段支撑器轴向支撑过程中的双向限位。The technical effect achieved by the present invention is that the axial centering device of the pipe section adopts a fully symmetrical structure, and is based on the quick clamping of the sea pipe clamp, the centering positioning of the pipe section centering device, and the axial support of the pipe section supporter. , the two-way limit of the lifting limiter and the propulsion power provided by the hydraulic cylinder jack and the hydraulic cylinder pusher, to achieve the axial alignment between the two pipe sections of the submarine pipeline; the sea pipe clamp adopts an R-shaped cross-section Horizontal casing, and complete the underwater rapid clamping between the front clamp body and the rear clamp body and the submarine pipeline according to the propulsion power provided by the hydraulic cylinder pusher. The moving pair between the middle tube and the support tube completes the underwater centering and positioning of the two tube sections of the submarine pipeline, and the tube section supporter completes the axis alignment of the two tube sections of the submarine pipeline based on the propulsion power provided by the hydraulic cylinder jack and the lifting slideway provided by the support tube. The vertical support, the lifting limiter realizes the two-way limit during the axial support process of the pipe section supporter based on the upper and lower limit pins.
附图说明Description of drawings
下面结合附图对本发明作进一步的说明，但本发明并不局限于以下实施例。The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.
图1是根据本发明所提出的一种海底管道连接作业管段轴向对中装置中典型管段轴向对中装置的结构简图。Fig. 1 is a schematic structural diagram of a typical axial centering device for a subsea pipeline connection operation proposed by the present invention.
图2是图1的左视图。Fig. 2 is a left side view of Fig. 1 .
图3是一种海底管道连接作业管段轴向对中装置中海管卡紧器和液缸周推器的结构简图。Fig. 3 is a schematic structural diagram of a sea pipe clamp and a hydraulic cylinder pusher in an axial centering device for connecting working pipe sections of a seabed pipeline.
图4是图3的左视图。Fig. 4 is a left side view of Fig. 3 .
图5是一种海底管道连接作业管段轴向对中装置中管段对中器的结构简图。Fig. 5 is a schematic structural diagram of a pipe section centering device in an axial centering device for connecting operation pipe sections of a submarine pipeline.
图6是一种海底管道连接作业管段轴向对中装置中管段支撑器和液缸顶升器的结构简图。Fig. 6 is a schematic structural diagram of a pipe section supporter and a hydraulic cylinder jacking device in an axial centering device for connecting operation pipe sections of a submarine pipeline.
图7是图6的A—A剖视图。Fig. 7 is a cross-sectional view along line A-A of Fig. 6 .
图8是一种海底管道连接作业管段轴向对中装置中升降限位器的结构简图。Fig. 8 is a schematic structural diagram of a lift limiter in an axial centering device for connecting working pipe sections of a submarine pipeline.
图9是图8的俯视图。FIG. 9 is a top view of FIG. 8 .
图10是一种海底管道连接作业管段轴向对中装置中水下连接管段轴向对中作业的流程简图。Fig. 10 is a schematic flow chart of the axial centering operation of the underwater connecting pipe section in the axial centering device for the connecting operation pipe section of the submarine pipeline.
图中1－海管卡紧器，2－液缸周推器，3－海底管道，4－管段对中器，5－液缸顶升器，6－升降限位器，7－管段支撑器，8－前卡体，9－后卡体，10－卡紧销轴，11－周推销轴，12－卡紧支托，13－卡锁体，14－卡锁块，15－加强座，16－对中基体，17－对中支托，18－对中筒，19－对中销轴，20－液压缸活塞杆，21－液压缸缸筒，22－支撑筒，23－支撑销轴，24－支撑支托，25－防沉板，26－限位销，27－限位本体，28－限位弹簧。In the figure, 1-sea pipe clamp, 2-hydraulic cylinder pusher, 3-submarine pipeline, 4-pipe section centering device, 5-hydraulic cylinder jacking device, 6-lift limiter, 7-pipe section supporter , 8-front card body, 9-rear card body, 10-clamping pin, 11-weekly push pin, 12-clamping support, 13-clamping body, 14-clamping block, 15-reinforcing seat, 16-centering base, 17-centering support, 18-centering cylinder, 19-centering pin, 20-hydraulic cylinder piston rod, 21-hydraulic cylinder cylinder, 22-supporting cylinder, 23-supporting pin , 24-support bracket, 25-anti-sinking plate, 26-limit pin, 27-limit body, 28-limit spring.
具体实施方式Detailed ways
在图1和图2中，海底管道连接作业管段轴向对中装置主要由海管卡紧器1、液缸周推器2、管段对中器4、液缸顶升器5、升降限位器6和管段支撑器7组成，其整体设计为左右全对称构造，海管卡紧器1、液缸周推器2、液缸顶升器5、升降限位器6和管段支撑器7沿轴向依次对称布置于管段对中器4的两侧，两套海管卡紧器1分别卡紧于海底管道3两管段的外环面，且海管卡紧器1放置于管段对中器4的上方，管段支撑器7放置于管段对中器4的下方，而升降限位器6则置入管段对中器4的对中筒内。In Figure 1 and Figure 2, the axial centering device of the subsea pipeline connecting operation pipe section is mainly composed of a sea pipe clamp 1, a hydraulic cylinder pusher 2, a pipe section centering device 4, a hydraulic cylinder jack 5, and a lifting limiter. It consists of a device 6 and a pipe section support 7, and its overall design is a left-right fully symmetrical structure. The sea pipe clamping device 1, the hydraulic cylinder pusher 2, the hydraulic cylinder jack 5, the lifting limiter 6 and the pipe section support 7 are along the Axially symmetrically arranged on both sides of the pipe centering device 4, two sets of sea pipe clamps 1 are respectively clamped on the outer ring surfaces of the two pipe sections of the submarine pipeline 3, and the sea pipe clamps 1 are placed on the pipe centering device 4, the pipe section supporter 7 is placed below the pipe section centering device 4, and the lifting limiter 6 is placed in the centering cylinder of the pipe section centering device 4.
在图1和图2中，海底管道连接作业管段轴向对中装置组装前，海管卡紧器1、管段对中器4和管段支撑器7主体部件的外表面分别进行喷漆防腐处理，海管卡紧器1卡锁体的卡锁销置入其卡锁块的圆形锁孔内，应该灵活移动且无阻滞，且升降限位器6的限位销置入管段对中器4的对中孔和管段支撑器7的限位孔内，均应该灵活移动且无阻滞，管段对中器4的对中筒应沿管段支撑器7的支撑筒正常滑动且无阻滞，且升降限位器6的限位销应沿管段支撑器7的升降滑道正常滑动且无阻滞，并保持海管卡紧器1内壁的清洁，最后检查海管卡紧器1的卡锁销以及升降限位器6的限位销有无损伤，检查各销轴和螺纹联接处是否牢固且有无锈蚀。In Figures 1 and 2, before the assembly of the axial centering device for connecting the subsea pipelines, the outer surfaces of the main parts of the subsea pipeline clamping device 1, the pipe section centering device 4 and the pipe section supporter 7 are sprayed with anti-corrosion treatment respectively. The locking pin of the locking body of the pipe clamping device 1 is inserted into the circular locking hole of its locking block, and it should move flexibly without blockage, and the limit pin of the lifting limiter 6 is placed into the pipe centering device 4 The centering hole of the pipe section supporter 7 and the limit hole of the pipe section supporter 7 should move flexibly without blockage, and the centering cylinder of the pipe section centering device 4 should slide normally along the support cylinder of the pipe section supporter 7 without blockage, and The limit pin of the lifting limiter 6 should slide normally along the lifting slideway of the pipe section supporter 7 without any blockage, and keep the inner wall of the sea pipe clamping device 1 clean, and finally check the locking pin of the sea pipe clamping device 1 And whether the limit pin of the lifting limiter 6 is damaged, check whether the pin shafts and threaded joints are firm and have no corrosion.
在图1和图2中，海底管道连接作业管段轴向对中装置组装时，海管卡紧器1前卡体和后卡体的两组卡紧销套分别配置卡紧销轴，而将前卡体和后卡体铰接在一起，而后液缸周推器2的液压缸通过卡紧支托与海管卡紧器1相连接，接着管段对中器4对中基体上端的水平基准面分别配置海管卡紧器1的后卡体和加强座，同时管段对中器4对中基体下端的柱形基准台配置管段对中器4的对中筒，并通过对中螺柱而将海管卡紧器1和管段对中器4连成一体，然后升降限位器6限位本体底部的环肩通过螺纹连接实现升降限位器6在管段对中器4对中筒环腔内壁中的定位，最后液缸顶升器5的液压缸通过对中支托和支撑支托而实现管段对中器4和管段支撑器7之间的连接。In Fig. 1 and Fig. 2, when the axial centering device for connecting the working pipe section of the submarine pipeline is assembled, the two sets of clamping pin sleeves of the front clamping body and the rear clamping body of the submarine clamping device 1 are respectively equipped with clamping pin shafts, and the The front clamping body and the rear clamping body are hinged together, and the hydraulic cylinder of the rear hydraulic cylinder pusher 2 is connected with the sea pipe clamping device 1 through the clamping bracket, and then the pipe section centering device 4 is centered on the horizontal reference plane at the upper end of the substrate The rear clamping body and reinforcing seat of the sea pipe clamping device 1 are respectively configured, and at the same time, the cylindrical reference platform at the lower end of the centering base of the pipe centering device 4 is equipped with the centering cylinder of the pipe centering device 4, and the The sea pipe clamp 1 and the pipe section centering device 4 are integrated into one body, and then the ring shoulder at the bottom of the lifting stopper 6 limits the body through threaded connection to realize the lifting stopper 6 on the pipe section centering device 4 and aligns the inner wall of the cylinder ring cavity Finally, the hydraulic cylinder of the hydraulic cylinder jack 5 realizes the connection between the pipe section centering device 4 and the pipe section supporter 7 through the centering bracket and the supporting bracket.
在图1和图2中，整套海底管道连接作业管段轴向对中装置的规格依据海底管道3的管径进行选取。In FIG. 1 and FIG. 2 , the specifications of the axial centering device for the whole set of subsea pipeline connecting operation pipe sections are selected according to the diameter of the subsea pipeline 3 .
在图3和图4中，两套海管卡紧器1之间的距离依据海底管道3两管段之间的轴向间距进行调整，海管卡紧器1中前卡体8和后卡体9的环腔内壁直径与海底管道3的管径相一致，液缸周推器2各液压缸推程的设计需要综合考虑卡紧支托12的几何尺寸和海底管道3的管径等因素。In Fig. 3 and Fig. 4, the distance between two sets of sea pipe clamps 1 is adjusted according to the axial distance between the two pipe sections of the submarine pipeline 3, the front clamp body 8 and the rear clamp body in the sea pipe clamp 1 The diameter of the inner wall of the annular cavity of 9 is consistent with the diameter of the submarine pipeline 3, and the design of the thrust of each hydraulic cylinder of the hydraulic cylinder thruster 2 needs to comprehensively consider factors such as the geometric dimensions of the clamping support 12 and the diameter of the submarine pipeline 3.
在图3和图4中，前卡体8的两组卡紧销套通过卡紧销轴10与后卡体9的两组卡紧销套分别铰接在一起，卡紧支托12分为三组并沿轴向等间距排列于前卡体8和后卡体9的顶部，每组卡紧支托12分卡紧支托的矩形凹槽内配置周推销轴11，从而将液缸周推器2的各液压缸与前卡体8和后卡体9分别连接在一起，海管卡紧器1通过后卡体9和加强座15而接于管段对中器4对中基体的水平基准面上。In Fig. 3 and Fig. 4, the two groups of clamping pin sleeves of the front card body 8 are respectively hinged together with the two groups of clamping pin sleeves of the rear clamping body 9 through the clamping pin shaft 10, and the clamping support 12 is divided into three parts. Grouped and arranged at the top of the front card body 8 and the rear card body 9 at equal intervals along the axial direction, each group of clamping supports has 12 points and is arranged in the rectangular groove of the clamping support. Each hydraulic cylinder of the device 2 is connected with the front clamping body 8 and the rear clamping body 9 respectively, and the sea pipe clamping device 1 is connected to the horizontal datum of the centering base of the pipe section centering device 4 through the rear clamping body 9 and the reinforcing seat 15 face.
在图3和图4中，海管卡紧器1的前卡体8和后卡体9依据液缸周推器2的水平推进而完成张开与合拢操作，且卡锁体13中卡锁芯的卡锁销依据卡锁体13的卡锁簧而顺利插入卡锁块14的圆形锁孔内，由此完成前卡体8和后卡体9的水下快速锁紧，同时前卡体8和后卡体9通过卡紧螺柱而快速卡紧于海底管道3的两管段上。In Fig. 3 and Fig. 4, the front locking body 8 and the rear locking body 9 of the sea pipe clamping device 1 complete the opening and closing operation according to the horizontal advancement of the hydraulic cylinder pusher 2, and the locking body 13 locks The locking pin of the core is smoothly inserted into the circular lock hole of the locking block 14 according to the locking spring of the locking body 13, thereby completing the underwater fast locking of the front locking body 8 and the rear locking body 9, and simultaneously the front locking The body 8 and the rear clamp body 9 are quickly clamped on the two pipe sections of the submarine pipeline 3 through the clamping studs.
在图5中，管段对中器4的对中基体16宽度依据海底管道3的管径进行调整，而对中基体16的长度则需大于两倍海管卡紧器1的轴向长度与海底管道3两管段的轴向间距之和，对中基体16的设计需要综合考虑海底管道3两管段的中心发生小幅偏心而产生的最大附加作用力等因素，对中筒18的轴向长度与海底管道3至海底泥面之间的垂向距离保持一致。In Fig. 5, the width of the centering base 16 of the pipe centering device 4 is adjusted according to the diameter of the submarine pipeline 3, while the length of the centering base 16 needs to be greater than twice the axial length of the sea pipe clamp 1 and the seabed The sum of the axial spacing between the two pipe sections of the pipeline 3, the design of the centering base 16 needs to comprehensively consider factors such as the maximum additional force generated by the slight eccentricity of the centers of the two pipe sections of the submarine pipeline 3, and the axial length of the centering cylinder 18 and the seabed The vertical distance between the pipeline 3 and the mud surface of the seabed remains consistent.
在图5中，对中基体16的柱形基准台上分别配置一个对中筒18，并通过对中螺柱与海管卡紧器1相连接，对中筒18的外环面与管段支撑器7支撑筒的环腔内壁相配合，同时对中筒18的对中孔与升降限位器6的限位销之间精密配合，管段对中器4通过对中支托17与液缸顶升器5的液压缸相连接。In Fig. 5, a centering cylinder 18 is respectively arranged on the cylindrical reference platform of the centering base 16, and is connected with the sea pipe clamp 1 through the centering stud, and the outer ring surface of the centering cylinder 18 is supported by the pipe section. The inner wall of the ring cavity of the support cylinder of the centering device 7 is matched, and at the same time, the centering hole of the centering cylinder 18 is precisely matched with the limit pin of the lifting limiter 6. The hydraulic cylinder of lifter 5 is connected.
在图6和图7中，管段支撑器7中支撑筒22的轴向长度与海底管道3至海底泥面之间的垂向距离保持一致，防沉板25的几何尺寸需要综合考虑海底管道3两管段端部的重力与整套管段轴向对中装置的重力之和等因素，液缸顶升器5各液压缸的升程和降程设计需要综合考虑海底管道3至海底泥面之间的垂向距离等因素，液缸顶升器5各液压缸提供的推进动力大小依据海底管道3两管段端部的重力与海管卡紧器1、液缸周推器2、管段对中器4和升降限位器6的重力之和进行设计。In Fig. 6 and Fig. 7, the axial length of the support cylinder 22 in the pipe section supporter 7 is consistent with the vertical distance between the subsea pipeline 3 and the subsea mud surface, and the geometric dimensions of the anti-settling plate 25 need to comprehensively consider the subsea pipeline 3 The gravity of the ends of the two pipe sections and the sum of the gravity of the axial centering device of the entire pipe section and other factors, the design of the lift and drop of each hydraulic cylinder of the hydraulic cylinder jack 5 needs to comprehensively consider the distance between the submarine pipeline 3 and the seabed mud surface. Vertical distance and other factors, the propulsion power provided by each hydraulic cylinder of the hydraulic cylinder jack 5 is based on the gravity at the end of the two pipe sections of the submarine pipeline 3 and the sea pipe clamp 1, hydraulic cylinder pusher 2, and pipe section centering device 4 Design with the sum of the gravity of lifting limiter 6.
在图6和图7中，支撑筒22的上层限位孔与升降限位器6的上层限位销相配合，实现液缸顶升器5最大升程的限位，同时支撑筒22的下层限位孔与升降限位器6的下层限位销相配合，实现液缸顶升器5最大降程的限位。液缸顶升器5的液压缸活塞杆20通过对中销轴19和对中支托17与管段对中器4的对中基体16相连接，液缸顶升器5的液压缸缸筒21则通过支撑销轴23和支撑支托24与管段支撑器7的防沉板25连成一体。In Fig. 6 and Fig. 7, the upper limit hole of the support cylinder 22 cooperates with the upper limit pin of the lift limiter 6 to realize the limit of the maximum lift of the hydraulic cylinder jack 5, while the lower layer of the support cylinder 22 The limit hole cooperates with the lower floor limit pin of the lifting limiter 6 to realize the limit of the maximum drop of the hydraulic cylinder jacking device 5 . The hydraulic cylinder piston rod 20 of the hydraulic cylinder jack 5 is connected with the centering base 16 of the pipe section centering device 4 through the centering pin 19 and the centering support 17, and the hydraulic cylinder barrel 21 of the hydraulic cylinder jack 5 Then, the anti-sinking plate 25 of the pipe segment supporter 7 is integrated into one body through the support pin shaft 23 and the support bracket 24 .
在图6和图7中，依据液缸顶升器5各液压缸的升降推进，管段支撑器7的防沉板25伴随其支撑筒22一起沿垂向滑移，直至防沉板25的下端面与海底泥面直接接触为止。In Fig. 6 and Fig. 7, according to the lifting and advancing of each hydraulic cylinder of the hydraulic cylinder jack 5, the anti-sinking plate 25 of the pipe section supporter 7 slides vertically along with its supporting cylinder 22 until the bottom of the anti-sinking plate 25 until the end surface is in direct contact with the seabed mud surface.
在图8和图9中，升降限位器6中限位销26的规格与对中筒18的对中孔和支撑筒22的限位孔保持一致，限位本体27的规格与对中筒18的环腔内壁相一致。In Fig. 8 and Fig. 9, the specification of the limit pin 26 in the lift limiter 6 is consistent with the centering hole of the centering cylinder 18 and the limit hole of the support cylinder 22, and the specification of the limit body 27 is the same as that of the centering cylinder. 18 ring cavity inner wall is consistent.
在图8和图9中，限位销26的圆拱面与支撑筒22的拱形沟槽之间形成升降滑道，依据限位本体27升降孔内限位弹簧28的伸缩运动，上层限位销26插入支撑筒22的上层限位孔内而达到液缸顶升器5的最大升程，同时下层限位销26插入支撑筒22的下层限位孔内而达到液缸顶升器5的最大降程，由此实现升降限位器的自动双向限位功能。In Fig. 8 and Fig. 9, the lifting slideway is formed between the circular arch surface of the limit pin 26 and the arched groove of the support cylinder 22, according to the telescopic movement of the limit spring 28 in the lift hole of the limit body 27, the upper limit The positioning pin 26 is inserted into the upper limit hole of the support tube 22 to reach the maximum lift of the hydraulic cylinder lifter 5, while the lower limit pin 26 is inserted into the lower limit hole of the support tube 22 to reach the maximum lift of the hydraulic cylinder lifter 5. The maximum drop range, thus realizing the automatic two-way limit function of the lifting limiter.
在图10中，水下连接管段轴向对中作业流程中，依据各组卡紧支托12上液缸周推器2液压缸的水平推进，海底管道3两侧的前卡体8和后卡体9依次实施合拢，同时依靠卡锁体13中卡锁簧的伸缩运动，卡锁体13中卡锁芯的卡锁销插入卡锁块14的圆形锁孔内，而后通过卡紧螺柱将前卡体8和后卡体9分别卡紧于海底管道3两管段的外环面上，由此完成海管卡紧器1的水下快速卡紧。In Fig. 10, in the axial centering operation process of the underwater connecting pipe section, according to the horizontal advancement of the hydraulic cylinder pusher 2 hydraulic cylinder on the clamping support 12 of each group, the front clamping body 8 and the rear clamping body 8 on both sides of the submarine pipeline 3 Card body 9 implements close up successively, relying on the telescopic movement of lock spring in lock body 13 simultaneously, the lock pin of lock core in lock body 13 is inserted in the circular lock hole of lock block 14, then by clamping screw The column clamps the front clamping body 8 and the rear clamping body 9 respectively on the outer ring surfaces of the two pipe sections of the submarine pipeline 3, thereby completing the underwater quick clamping of the marine pipeline clamping device 1 .
在图10中，水下连接管段轴向对中作业流程中，依据对中支托17和支撑支托24之间液缸顶升器5液压缸的升降推进，并结合限位销26圆拱面与支撑筒22拱形沟槽之间的升降滑道以及支撑筒22环腔内壁与对中筒18外环面之间的移动副，防沉板25伴随支撑筒22沿垂向滑移，而后依据限位本体27升降孔内限位弹簧28的伸缩运动，上层限位销26插入支撑筒22的上层限位孔内而达到液缸顶升器5的最大升程，防沉板25座于海底泥面，由此完成海底管道3两管段的轴向支撑和对中定位。In Fig. 10, in the axial centering operation process of the underwater connecting pipe section, according to the lifting and advancing of the hydraulic cylinder lifter 5 hydraulic cylinder between the centering support 17 and the support support 24, combined with the limit pin 26 round arch The lifting slideway between the surface and the arched groove of the support cylinder 22 and the movement pair between the inner wall of the ring cavity of the support cylinder 22 and the outer ring surface of the centering cylinder 18, the anti-sinking plate 25 slides vertically along with the support cylinder 22, Then according to the telescopic movement of the limit spring 28 in the lift hole of the limit body 27, the upper limit pin 26 is inserted into the upper limit hole of the support tube 22 to reach the maximum lift of the hydraulic cylinder jacking device 5, and 25 anti-sinking plates On the mud surface of the seabed, the axial support and centering positioning of the two pipe sections of the submarine pipeline 3 are thus completed.
上述各实施例仅用于说明本发明，其中各部件的结构、连接方式等都是可以有所变化的，凡是在本发明技术方案的基础上进行的等同变换和改进，均不应排除在本发明的保护范围之外。Above-mentioned each embodiment is only for illustrating the present invention, wherein the structure of each component, connection mode etc. all can be changed to some extent, every equivalent conversion and improvement carried out on the basis of the technical solution of the present invention, all should not be excluded from the present invention. outside the scope of protection of the invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810020943.9ACN108561090B (en) | 2018-01-10 | 2018-01-10 | A kind of submarine pipeline connection operation pipeline section axial alignment device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810020943.9ACN108561090B (en) | 2018-01-10 | 2018-01-10 | A kind of submarine pipeline connection operation pipeline section axial alignment device |
| Publication Number | Publication Date |
|---|---|
| CN108561090Atrue CN108561090A (en) | 2018-09-21 |
| CN108561090B CN108561090B (en) | 2019-05-24 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810020943.9AExpired - Fee RelatedCN108561090B (en) | 2018-01-10 | 2018-01-10 | A kind of submarine pipeline connection operation pipeline section axial alignment device |
| Country | Link |
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| CN (1) | CN108561090B (en) |
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|---|---|---|---|---|
| CN110091155A (en)* | 2019-06-12 | 2019-08-06 | 中国石油大学(华东) | The axially guiding centering bite type liquid of deep water hydrocarbon pipeline drives attachment device |
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