技术领域technical field
本发明属于聚合物输油管连接技术领域，涉及一种聚合物输油管接头，尤其是一种可以实现静电导除的聚合物输油管接头，具体地说是一种以止口端面径向键轴向导通实现静电导除的聚合物输油管接头。The invention belongs to the technical field of polymer oil pipeline connection, and relates to a polymer oil pipeline joint, in particular to a polymer oil pipeline joint that can realize electrostatic conduction, specifically a radial key on the end face of a spigot for axial conduction. Polymer oil pipe joints for static electricity removal.
背景技术Background technique
聚合物输油管以其质量轻、耐腐蚀、摩擦系数小、安装维修方便和易于泄漏检测等特点，已成为输油管市场上的主流产品而且该产品市场前景十分广阔。然而，聚合物输油管在油品输送过程中，其内壁会在摩擦、撞击等过程中产生静电荷。如果在导电不良的情况下，电荷积聚达到一定电量就会形成很高的电位，当带电体与不带电或静电电位很低的物体相接近时，就会发生放电产生火花，存在严重的安全隐患。可见，实现静电导除是聚合物输油管及其连接技术的核心关键问题之一。针对这一问题，目前聚合物输油管至少为三层结构即外层为强度层、内层为导电层、中间为粘结强度层与导电层的粘结层，如图1所示。Polymer oil pipeline has become the mainstream product in the oil pipeline market because of its light weight, corrosion resistance, small friction coefficient, convenient installation and maintenance, and easy leak detection, and the market prospect of this product is very broad. However, during the oil transportation process of the polymer oil pipeline, the inner wall of the polymer oil pipeline will generate electrostatic charges during the process of friction and impact. If the electric charge accumulates to a certain amount under the condition of poor electrical conductivity, a very high potential will be formed. When the charged object is close to an uncharged object or an object with a very low electrostatic potential, discharge will occur and sparks will occur, which will pose a serious safety hazard. . It can be seen that the realization of static electricity removal is one of the core key issues of polymer oil pipeline and its connection technology. To solve this problem, the current polymer oil pipeline has at least a three-layer structure, that is, the outer layer is a strength layer, the inner layer is a conductive layer, and the middle is a bonding layer that bonds the strength layer and the conductive layer, as shown in Figure 1.
在实施输油管布放过程中，必将涉及输油管的连接问题。输油管在连接时大都采用弯管或直管接头，而目前市场上的输油管接头为单一聚合物材料（其多与输油管外层强度层材料一致）制成，即目前市场上的输油管接头并不具有静电导除功能，两段分离的聚合物输油管通过管接头连接后其内部导电层并未实现导通（图2），可见此时整个管路并未实现静电导除，安全隐患依然存在。为了实现静电导除，输油管连接时往往会在两段分离的聚合物输油管之间增加导电套管（图3）。导电套管以分布在圆周上两处凸起结构插入输油管时发生弹性变形后，以弹性接触的方式紧密贴紧输油管内部导电层，实现两段分离输油管径向导通，如图4所示。然而，该方案存在以下不足：其一，该方案虽实现了直管连接导通，但其增加了导电套管，必将带来成本增加。其二，其导电套管内壁以及连接处相对于光滑管壁而言，均对油品输送形成阻力，同时杂质也会在此处沉积，长期使用会带来静电连通可靠性下降等问题。其三，该方案不适用于以一定角度进行连接，或即使通过中间套管变形可用于角接，其成形性、工程现场适应性以及导通可靠性等均会不同程度地存在问题。In the process of laying out the oil pipeline, the connection problem of the oil pipeline must be involved. Most of the oil pipelines are connected with elbow or straight pipe joints, while the oil pipeline joints currently on the market are made of a single polymer material (which is mostly consistent with the material of the outer strength layer of the oil pipeline), that is, the oil pipeline joints currently on the market do not have Static electricity removal function. After the two separated polymer oil pipelines are connected by pipe joints, the internal conductive layer does not realize conduction (Figure 2). It can be seen that the entire pipeline has not achieved static electricity removal at this time, and safety hazards still exist. In order to achieve static electricity removal, when the oil pipeline is connected, a conductive sleeve is often added between two separate sections of polymer oil pipeline (Figure 3). The conductive sleeve is elastically deformed when inserted into the oil pipeline with two raised structures distributed on the circumference, and then tightly adheres to the internal conductive layer of the oil pipeline in the form of elastic contact to realize the radial conduction of the two separated oil pipelines, as shown in Figure 4. However, this solution has the following disadvantages: First, although the solution realizes straight pipe connection and conduction, it adds a conductive sleeve, which will inevitably increase the cost. Second, compared with the smooth tube wall, the inner wall of the conductive sleeve and the joint form resistance to oil delivery, and impurities will also be deposited here. Long-term use will cause problems such as a decrease in the reliability of electrostatic connection. Third, this solution is not suitable for connection at a certain angle, or even if it can be used for corner joints through the deformation of the intermediate sleeve, there will be problems in varying degrees in its formability, engineering site adaptability, and conduction reliability.
可见，目前尚无一种可实现静电导除的聚合物输油管接头尤其是弯管接头可供使用，一定程度限制了聚合物输油管在石油输送领域中的广泛应用。It can be seen that there is currently no polymer oil pipeline joint, especially an elbow joint, that can realize static electricity removal, which limits the wide application of polymer oil pipelines in the field of oil transportation to a certain extent.
发明内容Contents of the invention
本发明的目的是针对“目前尚无一种可实现静电导除的聚合物输油管接头尤其是弯管接头可供使用，一定程度限制了聚合物输油管在的石油输送领域中的广泛应用”的问题，发明一种以止口端面径向键轴向导通实现静电导除的聚合物输油管接头。The purpose of the present invention is to solve the problem that "there is no polymer oil pipeline joint, especially an elbow joint, that can realize static electricity removal at present, which limits the wide application of polymer oil pipeline in the field of oil transportation to a certain extent". , inventing a polymer oil pipeline joint that achieves electrostatic conduction through radial key and axial conduction on the end face of the spigot.
本发明的技术方案是：Technical scheme of the present invention is:
一种以止口端面径向键轴向导通实现静电导除的聚合物输油管接头，它包括聚合物管体1，其特征是所述的聚合物管体1的内部设有内凸的环体2，环体2的两个端面分别用作止口面与所需连接的聚合物输油管的端部相抵，在所述的环体2的内表面粘结有导电环3，导电环3的两端端面和环体2两侧的左、右止口面平齐，导电环3的内径与聚合输油管内径一致，导电环3的厚度不小于聚合物输油管导电层的厚度，在导电环3两侧端面上均设有若干用作使需连接的两根聚合物输油管导电层轴向导通的径向键4，径向键4沿径向的键高不小于待连接输油管壁厚的一半，在需连接的聚合物输油管的端面相对位置处加工有与所述径向键4尺寸相匹配的凹槽5，该凹槽5必须连通聚合物输油管的导电层6、粘结层7和强度层8，通过所述径向键4与凹槽5间的配合所产生的电气连接实现聚合物输油管连接后的导电层导通。A polymer oil delivery pipe joint that achieves electrostatic conduction through radial key and axial conduction on the end face of the spigot, which includes a polymer pipe body 1, and is characterized in that the interior of the polymer pipe body 1 is provided with an inwardly convex ring Body 2, the two end faces of the ring body 2 are respectively used as the mouth surface and the end of the polymer oil pipeline to be connected, and the inner surface of the ring body 2 is bonded with a conductive ring 3, the conductive ring 3 The end faces at both ends are flush with the left and right spigot surfaces on both sides of the ring body 2, the inner diameter of the conductive ring 3 is consistent with the inner diameter of the polymer oil pipeline, and the thickness of the conductive ring 3 is not less than the thickness of the conductive layer of the polymer oil pipeline. A number of radial keys 4 are arranged on the side end faces to make the conductive layers of the two polymer oil pipelines to be connected axially conduct. A groove 5 matching the size of the radial key 4 is processed at the opposite position of the end face of the polymer oil pipeline to be connected, and the groove 5 must communicate with the conductive layer 6, the adhesive layer 7 and the strength layer of the polymer oil pipeline 8. Through the electrical connection generated by the cooperation between the radial key 4 and the groove 5, the conduction of the conductive layer after the connection of the polymer oil pipeline is realized.
所述的聚合物输油管接头为直管接头或弯管接头。The polymer oil delivery pipe joint is a straight pipe joint or an elbow joint.
所述的聚合物管体1和环体2上设有用作粘结导电环3的注胶通道9。The polymer pipe body 1 and the ring body 2 are provided with a glue injection channel 9 for bonding the conductive ring 3 .
所述导电环的厚度不小于待连接聚合物输油管的导电层6的厚度的2倍。The thickness of the conductive ring is not less than twice the thickness of the conductive layer 6 of the polymer oil pipeline to be connected.
所述径向键的键宽不小于待连接聚合物输油管壁厚的四分之一。The key width of the radial key is not less than 1/4 of the wall thickness of the polymer oil pipeline to be connected.
所述径向键沿轴向的厚度为待连接聚合物输油管壁厚的1/6-1/8。The axial thickness of the radial key is 1/6-1/8 of the wall thickness of the polymer oil pipeline to be connected.
所述导电环两个端面上的径向键的个数之和不超过6个，当键数大于1时径向键在导电环端面所处圆周上呈均匀分布。The sum of the number of radial keys on the two end faces of the conductive ring does not exceed 6, and when the number of keys is greater than 1, the radial keys are evenly distributed on the circumference of the end face of the conductive ring.
所述径向键在导电环左右端面所处圆周上其位置相差均布角的1/2。The positions of the radial keys on the circumference where the left and right end faces of the conductive ring are located differ by 1/2 of the uniform distribution angle.
所述径向键的截面形状可以为梯形、圆弧形或矩形中的一种。The cross-sectional shape of the radial key may be one of trapezoidal, arcuate or rectangular.
所述径向键4与凹槽5间为过盈配合或通过加装固定聚合物弹性连接件实现可靠的电气连接，聚合物弹性连接件为导电弹簧或导电簧片，弹性连接件活动插装在径向键与凹槽之间，或固定在径向键上或凹槽中。The radial key 4 and the groove 5 are an interference fit or a reliable electrical connection is achieved by adding a fixed polymer elastic connector. The polymer elastic connector is a conductive spring or a conductive reed, and the elastic connector is movably inserted. Between the radial key and the groove, or fixed on the radial key or in the groove.
本发明的有益效果：Beneficial effects of the present invention:
（1）本发明所述聚合物输油管接头，不仅解决了增加导电套管带来的诸如内壁不光滑对油品输送形成阻力、长时间使用静电导除可靠性下降等问题；而且可制作成适合输油管角接用弯管接头，从而解决了目前输油管需以一定角度连接时无法实现静电导除的难题。(1) The polymer oil pipeline joint of the present invention not only solves the problems caused by the addition of conductive sleeves, such as the resistance of the oil transportation caused by the rough inner wall, and the decrease in the reliability of static electricity removal after long-term use; it can also be made into a suitable The elbow joint is used for the corner connection of the oil pipeline, which solves the problem that the static electricity cannot be removed when the oil pipeline needs to be connected at a certain angle.
（2）本发明所述聚合物输油管接头，通过对导电环端面上径向键的截面形状、分布位置、数量等的合理设计，可保证输油管连接面存在较大平面度误差时的连接可靠性。(2) The polymer oil pipeline joint of the present invention can ensure the connection reliability when there is a large flatness error on the connection surface of the oil pipeline through the reasonable design of the cross-sectional shape, distribution position, quantity, etc. of the radial keys on the end surface of the conductive ring .
（3）本发明所述聚合物输油管接头，导电环左右端面上的径向键错开一个均布角，当采用本发明所述聚合物输油管接头连接两段分离输油管尤其是以一定角度连接时受力更加均匀，方便施工并保证连接可靠。(3) In the polymer oil pipeline joint of the present invention, the radial keys on the left and right end faces of the conductive ring are staggered by a uniform distribution angle. The force is more uniform, which is convenient for construction and ensures reliable connection.
（4）当采用径向键个数不小于2个的本发明所述聚合物输油管接头连接输油管时，在其中一个损坏时不影响静电导除的效果，具有很强的现场工程适应性。(4) When using the polymer oil pipeline joint of the present invention with not less than 2 radial keys to connect the oil pipeline, when one of them is damaged, the effect of static electricity removal will not be affected, and it has strong field engineering adaptability.
附图说明Description of drawings
图1 三层聚合物输油管的结构示意图；Fig. 1 Schematic diagram of the structure of the three-layer polymer oil pipeline;
图2 市场上现有单一材料输油管接头结构示意图；Figure 2 Schematic diagram of the existing single-material oil pipeline joints on the market;
图3 以径向导通实现静电导除用导电套管结构示意图；Fig. 3 Schematic diagram of the structure of the conductive sleeve for static electricity removal by radial conduction;
图4 采用导电套管实现静电导除输油管连接示意图；Figure 4 is a schematic diagram of the connection of the static electricity removal pipeline using a conductive sleeve;
图5 本发明所述输油管接头结构示意图；Fig. 5 is a structural schematic diagram of the oil pipeline joint of the present invention;
图6 采用本发明所述输油管接头连接示意图；Fig. 6 adopts the schematic diagram of the connection of the oil pipeline joint according to the present invention;
图7 径向键在导电环左右端面所处圆周上位置示意图（键数为2）Figure 7 Schematic diagram of the position of the radial key on the circumference of the left and right end faces of the conductive ring (the number of keys is 2)
图8 梯形径向键横截面示意图；Figure 8 Schematic diagram of the cross-section of the trapezoidal radial key;
图9 圆弧形径向键横截面示意图；Figure 9 Schematic diagram of the cross-section of the arc-shaped radial key;
图10 矩形径向键横截面示意图。Fig. 10 Schematic diagram of the cross-section of a rectangular radial key.
具体实施方式detailed description
如图5-10所示。As shown in Figure 5-10.
实施例一。Embodiment one.
一种以止口端面径向键轴向导通实现静电导除的聚合物输油管接头，它包括聚合物管体1，所述的聚合物管体1的内部设有内凸的环体2，环体2的两个端面分别用作止口面与所需连接的聚合物输油管的端部相抵，在所述的环体2的内表面粘结有导电环3，所述导电环3的两侧端面与环体3的两端端面（即左、右止口面）最好平齐，导电环3的内径与聚合输油管内径一致，导电环3的厚度不小于聚合物输油管导电层的厚度，在导电环3两侧端面上均设有若干用作使需连接的两根聚合物输油管导电层轴向导通的凸出在导电环端面的径向键4，径向键4沿径向的键高A不小于待连接输油管壁厚的一半，在需连接的聚合物输油管的端面相对位置处加工有与所述径向键4尺寸相匹配的凹槽5，该凹槽5必须连通聚合物输油管的导电层6、粘结层7和强度层8，通过所述径向键4与凹槽5间的配合所产生的电气连接实现聚合物输油管连接后的导电层导通。如图5所示，导电环3左右端面与环体2左右止口面平齐，且导电环3的内径尺寸与待连接输油（图5左视图）管10内径尺寸相同以便于原油无阻挡地流过管接头；导电环3左右端面上分布有用作轴向导通的径向键4（图5右视图），径向键4的键长不小于待连接输油管壁厚的一半，连接输油管时该径向键4插入输油管端面已加工好与之相配合的同一规格凹槽5中，通过径向键侧面与输油管凹槽侧面间的过盈配合（也可通过加装聚合物弹性连接件来实现，聚合物弹性连接件可直接放在径向键与凹槽之间，也可预先焊接在径向键或凹槽中，弹性连接件可为金属弹簧或簧片）所产生的弹性变形实现输油管连接后的导电层6的电气导通，如图6所示。A polymer oil delivery pipe joint that achieves static electricity conduction through the radial key on the end face of the spigot, which includes a polymer pipe body 1, and the inside of the polymer pipe body 1 is provided with an inwardly convex ring body 2, The two end surfaces of the ring body 2 are respectively used as the mouth surfaces to abut against the ends of the polymer oil pipeline to be connected, and a conductive ring 3 is bonded to the inner surface of the ring body 2, and the two ends of the conductive ring 3 The side end faces are preferably flush with the end faces of the ring body 3 (i.e. the left and right spigot faces), the inner diameter of the conductive ring 3 is consistent with the inner diameter of the polymer oil delivery pipe, and the thickness of the conductive ring 3 is not less than the thickness of the conductive layer of the polymer oil delivery pipe. On both sides of the conductive ring 3, there are several radial keys 4 protruding from the end faces of the conductive ring, which are used to make the conductive layers of the two polymer oil pipelines to be connected axially conduct. The key height A is not less than half of the wall thickness of the oil pipeline to be connected, and a groove 5 matching the size of the radial key 4 is processed at the opposite position of the end face of the polymer oil pipeline to be connected, and the groove 5 must communicate with the polymer The conductive layer 6, the adhesive layer 7 and the strength layer 8 of the oil pipeline realize the conduction of the conductive layer after the connection of the polymer oil pipeline through the electrical connection generated by the cooperation between the radial key 4 and the groove 5. As shown in Figure 5, the left and right end surfaces of the conductive ring 3 are flush with the left and right spigot surfaces of the ring body 2, and the inner diameter of the conductive ring 3 is the same as the inner diameter of the pipe 10 to be connected (left view of Figure 5) so that the crude oil is not blocked The ground flows through the pipe joint; radial keys 4 for axial conduction are distributed on the left and right ends of the conductive ring 3 (right view in Figure 5). The key length of the radial keys 4 is not less than half the wall thickness of the oil pipeline to be connected. When the radial key 4 is inserted into the groove 5 of the same specification that has been processed to match the end face of the oil delivery pipe, the interference fit between the side of the radial key and the side of the groove of the oil delivery pipe (also by installing a polymer elastic connector) To achieve, the polymer elastic connector can be directly placed between the radial key and the groove, or it can be pre-welded in the radial key or groove, and the elastic connector can be the elastic deformation produced by the metal spring or reed) The electrical conduction of the conductive layer 6 after the oil pipeline is connected is realized, as shown in FIG. 6 .
所述聚合物输油管接头，可以是直管接头，也可以是弯管接头The polymer oil pipeline joint can be a straight pipe joint or an elbow joint
所述聚合物输油管接头，其外层聚合物管体1设有用作粘环体2和导电环3的注胶通道9。Said polymer oil pipeline joint, its outer polymer pipe body 1 is provided with a glue injection channel 9 for the adhesive ring body 2 and the conductive ring 3 .
所述导电环3的厚度不小于待连接输油管导电层6厚度的2倍。The thickness of the conductive ring 3 is not less than twice the thickness of the conductive layer 6 of the oil pipeline to be connected.
所述径向键4的键宽B不小于待连接输油管10壁厚的四分之一。The key width B of the radial key 4 is not less than a quarter of the wall thickness of the oil delivery pipe 10 to be connected.
所述径向键4的沿轴向的厚度C为待连接输油管壁厚的1/6-1/8。The axial thickness C of the radial key 4 is 1/6-1/8 of the wall thickness of the oil pipeline to be connected.
所述径向键的个数不超过6个，当键数大于1时径向键在导电环端面所处圆周上呈均匀分布。The number of radial keys is no more than 6, and when the number of keys is greater than 1, the radial keys are evenly distributed on the circumference of the end face of the conductive ring.
所述径向键在导电环左右端面所处圆周上其位置相差均布角的1/2。The positions of the radial keys on the circumference where the left and right end faces of the conductive ring are located differ by 1/2 of the uniform distribution angle.
所述径向键的截面形状可以为梯形、圆弧形、矩形中的一种。The cross-sectional shape of the radial key may be one of trapezoidal, arcuate, and rectangular.
在采用本发明所述聚合物输油管接头连接输油管时，先在待连接输油管端面上采用相关工具加工出与本发明所述输油管接头径向键统一规格的凹槽，然后将待连接输油管与输油管接头连接，连接时需将输油管接头径向键插入输油管端面已加工好的凹槽中并保证键侧面紧密配合；同时，为保证连接不松动，采用现有输油管连接通用技术即在连接处涂抹或注入热熔胶对其进行胶结，即可达到整个输油管路中导电层导通实现静电导除。When using the polymer oil pipeline joint described in the present invention to connect the oil pipeline, first use relevant tools on the end face of the oil pipeline to be connected to process a groove with the same specification as the radial key of the oil pipeline joint described in the present invention, and then connect the oil pipeline to be connected with the oil pipeline joint When connecting, insert the radial key of the oil pipeline joint into the processed groove on the end surface of the oil pipeline and ensure that the side of the key fits closely; at the same time, in order to ensure that the connection is not loose, the existing general technology for oil pipeline connection is used, that is, to smear or inject at the joint Hot melt adhesive is used to cement it, so that the conduction of the conductive layer in the entire oil pipeline can be achieved to achieve static electricity removal.
实施例二。Embodiment two.
一种以止口端面径向键轴向导通实现静电导除的聚合物输油管接头，它包括聚合物管体1，所述的聚合物管体1的内部设有内凸的环体2，环体2的两个端面分别用作止口面与所需连接的聚合物输油管的端部相抵，在所述的环体2的内表面粘结有导电环3，导电环3的内径与聚合输油管内径一致，导电环3的厚度不小于聚合物输油管导电层的厚度，在导电环3两侧端面上均设有若干用作使需连接的两根聚合物输油管导电层轴向导通的凸出在导电环端面的径向键4，径向键4沿径向的键长不小于待连接输油管壁厚的一半，在需连接的聚合物输油管的端面相对位置处加工有与所述径向键4尺寸相匹配的凹槽5，该凹槽5必须连通聚合物输油管的导电层6、粘结层7和强度层8，通过所述径向键4与凹槽5间的配合所产生的电气连接实现聚合物输油管连接后的导电层导通。如图5所示，导电环3左右端面与环体2左右止口面平齐，且导电环3的内径尺寸与待连接输油（图5左视图）管10内径尺寸相同以便于原油无阻挡地流过管接头；导电环3左右端面上分布有用作轴向导通的径向键4（图5右视图），径向键4的键长不小于待连接输油管壁厚的一半，连接输油管时该径向键4插入输油管端面已加工好与之相配合的同一规格凹槽5中，通过径向键侧面与输油管凹槽侧面间的过盈配合（也可通过加装聚合物弹性连接件来实现，聚合物弹性连接件可直接放在径向键与凹槽之间，也可预先焊接在径向键或凹槽中，弹性连接件可为金属弹簧或簧片）所产生的弹性变形实现输油管连接后的导电层6的电气导通，如图6所示。A polymer oil delivery pipe joint that achieves static electricity conduction through the radial key on the end face of the spigot, which includes a polymer pipe body 1, and the inside of the polymer pipe body 1 is provided with an inwardly convex ring body 2, The two end faces of the ring body 2 are respectively used as the mouth surface and the end of the polymer oil pipeline to be connected, and a conductive ring 3 is bonded on the inner surface of the ring body 2, and the inner diameter of the conductive ring 3 is in line with the polymerization The inner diameter of the oil delivery pipe is the same, the thickness of the conductive ring 3 is not less than the thickness of the conductive layer of the polymer oil delivery pipe, and a number of protrusions are arranged on the end faces of the two sides of the conductive ring 3 to make the conductive layers of the two polymer oil delivery pipes to be connected axially conduct. The radial key 4 on the end face of the conductive ring, the key length of the radial key 4 in the radial direction is not less than half the wall thickness of the oil delivery pipe to be connected, and the radial key 4 is processed at the position opposite to the end face of the polymer oil delivery pipe to be connected. A groove 5 matching the size of the key 4, the groove 5 must be connected to the conductive layer 6, the adhesive layer 7 and the strength layer 8 of the polymer oil pipeline, through the cooperation between the radial key 4 and the groove 5 The electrical connection realizes conduction of the conductive layer after the connection of the polymer oil pipeline. As shown in Figure 5, the left and right end surfaces of the conductive ring 3 are flush with the left and right spigot surfaces of the ring body 2, and the inner diameter of the conductive ring 3 is the same as the inner diameter of the pipe 10 to be connected (left view of Figure 5) so that the crude oil is not blocked The ground flows through the pipe joint; radial keys 4 for axial conduction are distributed on the left and right ends of the conductive ring 3 (right view in Figure 5). The key length of the radial keys 4 is not less than half the wall thickness of the oil pipeline to be connected. When the radial key 4 is inserted into the groove 5 of the same specification that has been processed to match the end face of the oil delivery pipe, the interference fit between the side of the radial key and the side of the groove of the oil delivery pipe (also by installing a polymer elastic connector) To achieve, the polymer elastic connector can be directly placed between the radial key and the groove, or it can be pre-welded in the radial key or groove, and the elastic connector can be the elastic deformation produced by the metal spring or reed) The electrical conduction of the conductive layer 6 after the oil pipeline is connected is realized, as shown in FIG. 6 .
所述聚合物输油管接头为直管接头。The polymer oil delivery pipe joint is a straight pipe joint.
所述聚合物输油管接头，其聚合物管体1设有用作粘结内凸环体2和导电环3的注胶通道9。In the polymer oil pipeline joint, the polymer pipe body 1 is provided with a glue injection channel 9 for bonding the inner convex ring body 2 and the conductive ring 3 .
所述导电环3的厚度为待连接输油管导电层6厚度的2倍。The thickness of the conductive ring 3 is twice the thickness of the conductive layer 6 of the oil pipeline to be connected.
所述径向键的键宽为待连接输油管壁厚的四分之一。The key width of the radial key is 1/4 of the wall thickness of the oil pipeline to be connected.
所述径向键的沿轴向的键厚为待连接输油管壁厚的1/6。The axial key thickness of the radial key is 1/6 of the wall thickness of the oil pipeline to be connected.
所述径向键的个数2个，其在导电环3的端面均布即所处圆周上位置相差180度，且在导电环左右端面所处圆周上其位置相差90度，如图7所示。The number of the radial key is 2, and it is evenly distributed on the end face of the conductive ring 3, that is, the position on the circumference of the conductive ring 3 differs by 180 degrees, and its position on the circumference of the left and right end faces of the conductive ring differs by 90 degrees, as shown in Figure 7 Show.
所述径向键的截面形状为梯形（图8）。The cross-sectional shape of the radial key is trapezoidal (Fig. 8).
实施例三。Embodiment three.
一种以止口端面径向键轴向导通实现静电导除的聚合物输油管接头，它包括聚合物管体1，所述的聚合物管体1的内部设有内凸的环体2，环体2的两个端面分别用作止口面与所需连接的聚合物输油管的端部相抵，在所述的环体2的内表面粘结有导电环3，导电环3的内径与聚合输油管内径一致，导电环3的厚度不小于聚合物输油管导电层的厚度，在导电环3两侧端面上均设有若干用作使需连接的两根聚合物输油管导电层轴向导通的凸出在导电环端面的径向键4，径向键4沿径向的键长不小于待连接输油管壁厚的一半，在需连接的聚合物输油管的端面相对位置处加工有与所述径向键4尺寸相匹配的凹槽5，该凹槽5必须连通聚合物输油管的导电层6、粘结层7和强度层8，通过所述径向键4与凹槽5间的配合所产生的电气连接实现聚合物输油管连接后的导电层导通。如图5所示，导电环3左右端面与环体2左右止口面平齐，且导电环3的内径尺寸与待连接输油（图5左视图）管10内径尺寸相同以便于原油无阻挡地流过管接头；导电环3左右端面上分布有用作轴向导通的径向键4（图5右视图），径向键4的键长不小于待连接输油管壁厚的一半，连接输油管时该径向键4插入输油管端面已加工好与之相配合的同一规格凹槽5中，通过径向键侧面与输油管凹槽侧面间的过盈配合（也可通过加装聚合物弹性连接件来实现，聚合物弹性连接件可直接放在径向键与凹槽之间，也可预先焊接在径向键或凹槽中，弹性连接件可为金属弹簧或簧片）所产生的弹性变形实现输油管连接后的导电层6的电气导通，如图6所示。A polymer oil delivery pipe joint that achieves static electricity conduction through the radial key on the end face of the spigot, which includes a polymer pipe body 1, and the inside of the polymer pipe body 1 is provided with an inwardly convex ring body 2, The two end faces of the ring body 2 are respectively used as the mouth surface and the end of the polymer oil pipeline to be connected, and a conductive ring 3 is bonded on the inner surface of the ring body 2, and the inner diameter of the conductive ring 3 is in line with the polymerization The inner diameter of the oil delivery pipe is the same, the thickness of the conductive ring 3 is not less than the thickness of the conductive layer of the polymer oil delivery pipe, and a number of protrusions are arranged on the end faces of the two sides of the conductive ring 3 to make the conductive layers of the two polymer oil delivery pipes to be connected axially conduct. The radial key 4 on the end face of the conductive ring, the key length of the radial key 4 in the radial direction is not less than half the wall thickness of the oil delivery pipe to be connected, and the radial key 4 is processed at the position opposite to the end face of the polymer oil delivery pipe to be connected. A groove 5 matching the size of the key 4, the groove 5 must be connected to the conductive layer 6, the adhesive layer 7 and the strength layer 8 of the polymer oil pipeline, through the cooperation between the radial key 4 and the groove 5 The electrical connection realizes conduction of the conductive layer after the connection of the polymer oil pipeline. As shown in Figure 5, the left and right end surfaces of the conductive ring 3 are flush with the left and right spigot surfaces of the ring body 2, and the inner diameter of the conductive ring 3 is the same as the inner diameter of the pipe 10 to be connected (left view of Figure 5) so that the crude oil is not blocked The ground flows through the pipe joint; radial keys 4 for axial conduction are distributed on the left and right ends of the conductive ring 3 (right view in Figure 5). The key length of the radial keys 4 is not less than half the wall thickness of the oil pipeline to be connected. When the radial key 4 is inserted into the groove 5 of the same specification that has been processed to match the end face of the oil delivery pipe, the interference fit between the side of the radial key and the side of the groove of the oil delivery pipe (also by adding a polymer elastic connector) To achieve, the polymer elastic connector can be directly placed between the radial key and the groove, or it can be pre-welded in the radial key or groove, and the elastic connector can be the elastic deformation produced by the metal spring or reed) The electrical conduction of the conductive layer 6 after the oil pipeline is connected is realized, as shown in FIG. 6 .
所述聚合物输油管接头是直角弯管接头。The polymer oil pipeline joint is a right-angle elbow joint.
所述聚合物输油管接头，其外层的聚合物管体1中设有用作粘结环体2和导电环的注胶通道，两者之间形成有粘结层11。In the polymer oil pipeline joint, the polymer pipe body 1 of the outer layer is provided with a glue injection channel for the adhesive ring body 2 and the conductive ring, and an adhesive layer 11 is formed between the two.
所述导电环的壁厚为待连接输油管导电层6厚度的3倍。The wall thickness of the conductive ring is three times the thickness of the conductive layer 6 of the oil pipeline to be connected.
所述径向键的键宽为待连接输油管壁厚的三分之一。The key width of the radial key is one-third of the wall thickness of the oil pipeline to be connected.
所述径向键的轴向厚度为待连接输油管壁厚的1/7。The axial thickness of the radial key is 1/7 of the wall thickness of the oil pipeline to be connected.
所述径向键的个数3个，其在导电环端面均布即所处圆周上位置相差120度，且在导电环左右端面所处圆周上其位置相差60度。The number of radial keys is 3, which are evenly distributed on the end surface of the conductive ring, that is, the positions on the circumference of the conductive ring differ by 120 degrees, and the positions on the circumference of the left and right end surfaces of the conductive ring differ by 60 degrees.
所述径向键的截面形状为圆弧形（图9）。The cross section of the radial key is arc-shaped (Fig. 9).
实施例四。Embodiment four.
本实施例与实施例一的区别在于所述聚合物输油管接头是120度角弯管接头。所述聚合物输油管接头，所述导电环3的厚度为待连接输油管导电层6厚度的4倍。所述径向键4的键宽为待连接输油管壁厚的二分之一。所述径向键4的轴向厚度为待连接输油管壁厚的1/8。所述径向键的个数4个，其在导电环端面均布即所处圆周上位置相差90度，且在导电环左右端面所处圆周上其位置相差45度。所述径向键的截面形状为矩形（图10）。The difference between this embodiment and Embodiment 1 is that the polymer oil pipeline joint is a 120-degree angle elbow joint. For the polymer oil pipeline joint, the thickness of the conductive ring 3 is four times the thickness of the conductive layer 6 of the oil pipeline to be connected. The key width of the radial key 4 is 1/2 of the wall thickness of the oil pipeline to be connected. The axial thickness of the radial key 4 is 1/8 of the wall thickness of the oil pipeline to be connected. The number of radial keys is 4, which are evenly distributed on the end surface of the conductive ring, that is, the positions on the circumference of the conductive ring differ by 90 degrees, and the positions on the circumference of the left and right end surfaces of the conductive ring differ by 45 degrees. The cross-sectional shape of the radial key is rectangular (Fig. 10).
本发明未涉及部分与现有技术相同或可采用现有技术加以实现。The parts not involved in the present invention are the same as the prior art or can be realized by using the prior art.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610928433.2ACN106567972B (en) | 2016-10-31 | 2016-10-31 | The polymer connector for oil delivery pipe for realizing that static guiding removes axially is turned on seam end face radial direction key |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610928433.2ACN106567972B (en) | 2016-10-31 | 2016-10-31 | The polymer connector for oil delivery pipe for realizing that static guiding removes axially is turned on seam end face radial direction key |
| Publication Number | Publication Date |
|---|---|
| CN106567972Atrue CN106567972A (en) | 2017-04-19 |
| CN106567972B CN106567972B (en) | 2018-03-27 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610928433.2AActiveCN106567972B (en) | 2016-10-31 | 2016-10-31 | The polymer connector for oil delivery pipe for realizing that static guiding removes axially is turned on seam end face radial direction key |
| Country | Link |
|---|---|
| CN (1) | CN106567972B (en) |
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| CN106567972B (en) | 2018-03-27 |
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