技术领域technical field
本发明属于物理测量装置技术领域，尤其涉及一种测量多相流相含率分布的取样器和方法。The invention belongs to the technical field of physical measuring devices, and in particular relates to a sampler and a method for measuring holdup distribution of multiphase fluid phases.
背景技术Background technique
在工业多相化工反应器内，往往存在不同相态的流动、混合、分散、传递和反应等过程。分散相颗粒(气泡、液滴或固体颗粒)浓度分布是反映反应器内部特性最直接、最有效的参数之一，是多相反应器分析、选型及设计放大的重要依据。In industrial heterogeneous chemical reactors, there are often processes of flow, mixing, dispersion, transfer and reaction in different phases. The concentration distribution of dispersed phase particles (bubbles, liquid droplets or solid particles) is one of the most direct and effective parameters to reflect the internal characteristics of the reactor, and is an important basis for the analysis, selection and design of multiphase reactors.
目前对多相流中气泡、液滴和固体颗粒分布的测定，最常用的手段是基于光反射的光纤探针法和基于电导的电导(电容)探针法，上述方法在气液和液固两相体系的测量中获得了很多成功应用。但是当同时存在多个分散相时，例如，气液固三相体系存在气泡和固体颗粒两种高相含率的分散相，特别是工业体系往往相含率较高，实际测量时气泡和固体颗粒的采样信号“挤”在一起很难分辨，从而严重影响测量结果的准确性。此外，还有超声波断层成像、伽马射线断层成像、电子断层成像技术等，它们最大的优势是非侵入性，但价格昂贵且时空解析率仍需提高。取样法是多相体系比较原始和传统的检测方法，由于其简单、直接且结果较可靠而在局部相含率检测中获得了广泛应用。取样法的关键在于等速取样或等动量取样(isokineticsampling)，即取样管内外的流动状况相同。要做到等速取样，首先需要取样口正对来流方向，如果偏离来流方向则会出现较大的误差。目前广泛采用的所谓的“切向取样法”只适用于较简单的能预先判断大致流向的流动，而多相反应器内往往流动复杂，无法预知取样点的流动方向，因此会严重影响取样结果的准确性。At present, the most commonly used methods for measuring the distribution of bubbles, liquid droplets and solid particles in multiphase flow are the optical fiber probe method based on light reflection and the conductance (capacitance) probe method based on conductance. The above methods are used in gas-liquid and liquid-solid Many successful applications have been obtained in the measurement of two-phase systems. However, when there are multiple dispersed phases at the same time, for example, there are two dispersed phases with high phase content of air bubbles and solid particles in the gas-liquid-solid three-phase system, especially in industrial systems. The sampling signals of the particles are "crowded" together and are difficult to distinguish, which seriously affects the accuracy of the measurement results. In addition, there are ultrasonic tomography, gamma ray tomography, electron tomography, etc. Their biggest advantage is non-invasiveness, but they are expensive and the spatial-temporal resolution still needs to be improved. Sampling method is a relatively primitive and traditional detection method for multiphase systems. It has been widely used in local phase holdup detection because of its simplicity, directness and reliable results. The key to the sampling method is isokinetic sampling or isokinetic sampling, that is, the flow conditions inside and outside the sampling tube are the same. To achieve constant velocity sampling, firstly, the sampling port needs to face the direction of the incoming flow. If it deviates from the direction of the incoming flow, a larger error will occur. The so-called "tangential sampling method" widely used at present is only suitable for relatively simple flows that can predict the approximate flow direction in advance, while the flow in multiphase reactors is often complicated, and the flow direction of the sampling point cannot be predicted, so the sampling results will be seriously affected accuracy.
发明内容Contents of the invention
针对现有技术的不足，本发明的目的在于提供一种测量多相流相含率分布的取样器和方法，所述取样器能够自动感知取样点流体流动方向，并自动调整管口朝向至正对来流，从而提高取样测量的准确性。In view of the deficiencies in the prior art, the object of the present invention is to provide a sampler and method for measuring the holdup distribution of multiphase fluid phases, the sampler can automatically sense the fluid flow direction of the sampling point, and automatically adjust the orientation of the nozzle to the positive direction. Oncoming flow, thereby improving the accuracy of sampling measurement.
为达此目的，本发明采用以下技术方案：For reaching this purpose, the present invention adopts following technical scheme:
本发明的目的之一在于提供一种测量多相流相含率分布的取样器，所述取样器包括前端取样管、能够自由转向的连接管、后端取样管和用于调节前端取样管管口方向的调节器，所述前端取样管通过连接管与后端取样管相连，所述调节器包括调节杆和安装在调节杆一端的调节片，所述调节杆的另一端与前端取样管相连；当所述调节片在多相流的流体中受力不平衡时，所述调节片在不平衡力的作用下通过调节杆带动前端取样管转动，直至调节片受力平衡，此时前端取样管的管口正对多相流来流方向。One of the purposes of the present invention is to provide a sampler for measuring holdup distribution of multiphase fluid phase, said sampler includes a front-end sampling tube, a connecting tube capable of turning freely, a rear-end sampling tube and a tube for adjusting the front-end sampling tube A regulator in the direction of the mouth, the front-end sampling tube is connected to the rear-end sampling tube through a connecting tube, the regulator includes an adjustment rod and an adjustment piece installed on one end of the adjustment rod, and the other end of the adjustment rod is connected to the front-end sampling tube ; When the regulating piece is unbalanced in force in the fluid of the multiphase flow, the regulating piece drives the front-end sampling tube to rotate through the regulating rod under the action of the unbalanced force until the force of the regulating piece is balanced, and the front-end sampling The nozzle of the tube is facing the direction of the multiphase flow.
所述连接管包括软管和弹簧，所述弹簧的内径大于软管的外径，所述弹簧套于软管外部。The connecting pipe includes a hose and a spring, the inner diameter of the spring is larger than the outer diameter of the hose, and the spring is sleeved on the outside of the hose.
优选地，所述软管的材质为橡胶。Preferably, the hose is made of rubber.
所述调节片的个数是4的倍数，且不为0，所述调节片之间的间距相同。The number of the adjusting pieces is a multiple of 4 and is not 0, and the spacing between the adjusting pieces is the same.
优选地，所述安装在调节杆上的调节片形状相同。Preferably, the adjustment pieces installed on the adjustment rods have the same shape.
优选地，所述调节杆的材质为金属或有机玻璃。Preferably, the adjustment rod is made of metal or plexiglass.
所述调节片的形状为三角形或梯形。The shape of the regulating piece is triangular or trapezoidal.
所述调节片正对来流的长边长度与前端取样管的内径尺寸的比值为0.8-1.2。The ratio of the length of the long side of the regulating piece facing the incoming flow to the inner diameter of the front-end sampling tube is 0.8-1.2.
所述前端取样管和后端取样管均为圆柱形管。Both the front-end sampling tube and the rear-end sampling tube are cylindrical tubes.
优选地，所述前端取样管和后端取样管的材质为金属或有机玻璃。Preferably, the front-end sampling tube and the rear-end sampling tube are made of metal or plexiglass.
所述圆柱形前端取样管的长径比为1-2。The aspect ratio of the cylindrical front-end sampling tube is 1-2.
所述前端取样管和后端取样管的内径相同。The inner diameters of the front-end sampling tube and the rear-end sampling tube are the same.
所述前端取样管与后端取样管之间的夹角为60-120°。The included angle between the front-end sampling tube and the rear-end sampling tube is 60-120°.
本发明的目的之二在于提供一种利用如上所述的取样器测量多相流相含率分布的方法，所述测量方法为：将取样器的前端取样管及调节器放入多相流反应器中，并浸于多相流液面以下，保持后端取样管竖直，待前端取样管不再旋转时，取样，测量相含率。The second object of the present invention is to provide a method for measuring the phase holdup distribution of multiphase flow using the sampler as described above. The measurement method is: put the front sampling tube and regulator of the sampler into the multiphase flow and immersed in the multiphase flow below the surface of the multiphase flow, keep the back-end sampling tube vertical, and when the front-end sampling tube no longer rotates, take samples and measure the phase holdup.
与现有技术相比，本发明的有益效果为：Compared with prior art, the beneficial effect of the present invention is:
本发明提供的测量多相流相含率的取样器，能够对测量点流体的流动方向实现自适应，自动感知取样点流体流动方向，并自动调整管口朝向至正对来流，从而提高取样测量的准确性。The sampler for measuring the phase holdup of multiphase flow provided by the present invention can realize self-adaptation to the flow direction of the fluid at the measurement point, automatically sense the flow direction of the fluid at the sampling point, and automatically adjust the direction of the nozzle to face the incoming flow, thereby improving the sampling efficiency. Accuracy of measurement.
本发明提供的利用如上所述的取样器测量多相流相含率分布的方法简单，易操作。The method provided by the present invention for measuring the holdup distribution of multiphase fluid phases by using the above-mentioned sampler is simple and easy to operate.
附图说明Description of drawings
图1是实施例1提供的测量多相流相含率分布的取样器的结构示意图。FIG. 1 is a structural schematic diagram of a sampler for measuring holdup distribution of multiphase fluid phases provided in Example 1. FIG.
其中：1，前端取样管；2，调节片；3，弹簧；4，软管；5，后端取样管；6，调节杆。Among them: 1, front-end sampling tube; 2, adjustment plate; 3, spring; 4, hose; 5, rear-end sampling tube; 6, adjustment rod.
图2是实施例2获得的液固搅拌槽内局部固含率分布。Fig. 2 is the local solid holdup distribution in the liquid-solid stirring tank obtained in Example 2.
其中：a为PC-6a固体浓度测量仪测定结果；b为普通取样管测量结果(管口水平)；c为实施例1所述取样器测量结果。Wherein: a is the measurement result of PC-6a solid concentration measuring instrument; b is the measurement result of common sampling tube (pipe level); c is the measurement result of the sampler described in embodiment 1.
图3是实施例3获得的气液搅拌槽内气含率分布。Fig. 3 is the gas holdup distribution in the gas-liquid stirring tank obtained in Example 3.
其中：a为电导探针测量结果；b为普通取样管测量结果(管口水平)；c为实施例1所述取样器测量结果。Wherein: a is the measurement result of the conductivity probe; b is the measurement result of the common sampling tube (pipe level); c is the measurement result of the sampler described in Example 1.
图4是实施例4获得的气液固搅拌槽内固含率分布图。Fig. 4 is a distribution diagram of solid holdup in the gas-liquid-solid stirring tank obtained in Example 4.
图5是实施例4获得的气液固搅拌槽内气含率分布图。Fig. 5 is the gas holdup distribution diagram in the gas-liquid-solid stirring tank obtained in Example 4.
具体实施方式detailed description
下面结合附图并通过具体实施方式来进一步说明本发明的技术方案。The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.
一种测量多相流相含率分布的取样器，所述取样器包括前端取样管1、能够自由转向的连接管、后端取样管5和用于调节前端取样管1管口方向的调节器，所述前端取样管1通过连接管与后端取样管5相连，所述调节器包括调节杆6和安装在调节杆6一端的调节片2，所述调节杆6的另一端与前端取样管1相连；当所述调节片2在多相流的流体中受力不平衡时，所述调节片2在不平衡力的作用下通过调节杆6带动前端取样管1转动，直至调节片2受力平衡，此时前端取样管1的管口正对多相流来流方向。A sampler for measuring the holdup distribution of multiphase fluid phases, the sampler includes a front-end sampling pipe 1, a connecting pipe capable of turning freely, a rear-end sampling pipe 5, and a regulator for adjusting the direction of the mouth of the front-end sampling pipe 1 , the front-end sampling tube 1 is connected to the rear-end sampling tube 5 through a connecting pipe, the regulator includes an adjustment rod 6 and an adjustment piece 2 installed on one end of the adjustment rod 6, the other end of the adjustment rod 6 is connected to the front-end sampling tube 1 connected; when the regulating piece 2 is unbalanced in the multiphase fluid, the regulating piece 2 drives the front end sampling tube 1 to rotate through the regulating rod 6 under the action of the unbalanced force until the regulating piece 2 is pressed Force balance, at this time the mouth of the sampling tube 1 at the front is facing the direction of the multiphase flow.
本发明提供的取样器，当流体的来向与前端取样管1成某一交角时，流体对调节器的调节片2产生压力，由于调节片2的各处感受的压力不相等，垂直于调节片2的压力产生压力矩，使前端取样管1旋转，直至前端取样管1的管口正好对着流体的来向，由于调节片2各个方向受力平衡，前端取样管1就稳定在该方位。In the sampler provided by the present invention, when the direction of the fluid forms a certain angle with the front-end sampling tube 1, the fluid will generate pressure on the regulating plate 2 of the regulator. Since the pressure felt by the regulating plate 2 is unequal, the pressure perpendicular to the regulating plate 2 is unequal. The pressure of the piece 2 generates a pressure moment, which makes the front-end sampling tube 1 rotate until the nozzle of the front-end sampling tube 1 is just facing the direction of the fluid. Since the adjustment piece 2 is balanced in all directions, the front-end sampling tube 1 is stable in this position. .
所述连接管包括软管4和弹簧3，所述弹簧3的内径大于软管4的外径，所述弹簧3套于软管4外部。所述连接管能够根据前端取样管1的转动而转动。The connecting pipe includes a hose 4 and a spring 3 , the inner diameter of the spring 3 is larger than the outer diameter of the hose 4 , and the spring 3 is sleeved on the outside of the hose 4 . The connecting pipe can rotate according to the rotation of the sampling pipe 1 at the front end.
优选地，所述软管4的材质为橡胶。Preferably, the hose 4 is made of rubber.
所述调节片2的个数是4的倍数，且不为0，如调节片2的个数是8个、12个、14个或20个等，所述调节片2之间的间距相同。The number of the adjusting pieces 2 is a multiple of 4, and is not 0. For example, if the number of the adjusting pieces 2 is 8, 12, 14 or 20, etc., the spacing between the adjusting pieces 2 is the same.
优选地，所述安装在调节杆上的调节片形状相同。Preferably, the adjustment pieces installed on the adjustment rods have the same shape.
优选地，所述调节杆6的材质为金属或有机玻璃。Preferably, the adjustment rod 6 is made of metal or plexiglass.
所述调节片2的形状为三角形或梯形。The shape of the regulating piece 2 is triangle or trapezoid.
所述调节片2正对来流的长边的长度与前端取样管1的内径尺寸的比值为0.8-1.2，如0.9、1.0、1.1或1.2等。The ratio of the length of the long side of the regulating piece 2 facing the incoming flow to the inner diameter of the front sampling tube 1 is 0.8-1.2, such as 0.9, 1.0, 1.1 or 1.2.
所述前端取样管1和后端取样管5均为圆柱形管。Both the front-end sampling tube 1 and the rear-end sampling tube 5 are cylindrical tubes.
优选地，所述前端取样管1和后端取样管5的材质为金属或有机玻璃。Preferably, the front-end sampling tube 1 and the rear-end sampling tube 5 are made of metal or plexiglass.
所述圆柱形前端取样管1的长径比为1-2，如1.1、1.2、1.3、1.5、1.8或1.9等。The aspect ratio of the cylindrical front sampling tube 1 is 1-2, such as 1.1, 1.2, 1.3, 1.5, 1.8 or 1.9.
所述前端取样管1和后端取样管5的内径相同。The inner diameters of the front-end sampling tube 1 and the rear-end sampling tube 5 are the same.
所述前端取样管1与后端取样管5之间的夹角为60-120°，如65°、70°、75°、80°、85°、90°、100°、105°或115°等。The angle between the front-end sampling tube 1 and the rear-end sampling tube 5 is 60-120°, such as 65°, 70°, 75°, 80°, 85°, 90°, 100°, 105° or 115° Wait.
利用如上所述的取样器测量多相流相含率分布的方法，所述测量方法为：将取样器的前端取样管1及调节器放入多相流反应器中，并浸于多相流液面以下，保持后端取样管5竖直，待前端取样管1不再旋转时，取样，测量相含率。The method for measuring the holdup distribution of the multiphase flow by using the above-mentioned sampler, the measurement method is: put the front sampling tube 1 and the regulator of the sampler into the multiphase flow reactor, and immerse in the multiphase flow Below the liquid level, keep the rear-end sampling tube 5 vertical, and when the front-end sampling tube 1 no longer rotates, take samples and measure the phase holdup.
实施例1Example 1
一种测量多相流相含率分布的取样器，如图1所示。所述取样器包括前端取样管1、能够自由转向的连接管、后端取样管5和用于调节前端取样管1管口方向的调节器，所述前端取样管1通过连接管与后端取样管5相连，所述调节器包括调节杆6和安装在调节杆6一端的调节片2，所述调节杆6的另一端与前端取样管1相连，所述调节片2的个数为四片，调节片2之间的间距相同，所述调节片2的形状为梯形，所述梯形正对来流的边为两条平行边。A sampler for measuring holdup distribution of multiphase fluid phase is shown in Fig. 1 . The sampler comprises a front-end sampling tube 1, a freely turning connecting tube, a rear-end sampling tube 5 and a regulator for adjusting the direction of the front-end sampling tube 1 nozzle, and the front-end sampling tube 1 is connected to the rear-end sampling tube through the connecting tube. tube 5 is connected, the regulator includes an adjustment rod 6 and an adjustment piece 2 installed on one end of the adjustment rod 6, the other end of the adjustment rod 6 is connected with the front sampling tube 1, and the number of the adjustment pieces 2 is four , the spacing between the regulating pieces 2 is the same, the shape of the regulating pieces 2 is trapezoidal, and the sides of the trapezoid facing the incoming flow are two parallel sides.
所述取样器的前端取样管1为有机玻璃管材质，其内径为6mm，壁厚为1mm，管长度为16mm；所述调节杆6长8mm；连接管包括橡胶软管4和不锈钢弹簧3，橡胶软管4的内径为6mm，壁厚为1mm，内径9mm，连接管长度为10mm；后端取样管5是内径为6mm、壁厚为1mm的不锈钢管，后端取样管5的管长为300mm。The front end sampling tube 1 of the sampler is a plexiglass tube material, its inner diameter is 6mm, the wall thickness is 1mm, and the tube length is 16mm; the long 8mm of the adjusting rod 6; the connecting tube includes a rubber hose 4 and a stainless steel spring 3, The inner diameter of the rubber hose 4 is 6mm, the wall thickness is 1mm, the inner diameter is 9mm, and the length of the connecting pipe is 10mm; 300mm.
采用蠕动泵控制取样速度，固含率采用比重瓶法获得固体质量百分比，而气含率则直接从取样瓶刻度读取体积含率。The sampling speed is controlled by a peristaltic pump, the solid mass percentage is obtained by the pycnometer method for the solid holdup, and the volume holdup is directly read from the scale of the sampling bottle for the gas holdup.
实施例2Example 2
利用实施例1所述的取样器测定液固搅拌槽反应器中的局部固体相含率。The sampler described in Example 1 was used to measure the local solid phase holdup in the liquid-solid stirred tank reactor.
实验是在直径T＝380mm的有机玻璃搅拌槽中进行，实验体系为石英砂(200目)和去离子水，平均固含率为5wt％(质量比)；静止液面高度H＝T，液相温度22℃；搅拌桨为45°下推式六折叶开启涡轮桨，桨直径D＝T/3，桨离底高度C＝T/3，椭圆形槽底，长轴和短轴之比为2:1；以搅拌槽椭圆底中心最低点为坐标原点，采用实施例1所述的取样器，测量了(r/R，z/H)＝(0.8，0.34)位置上的固含率，其中，r/R和z/H分别表示以搅拌槽底部中心为原点，径向和轴向的位置，R为搅拌槽底部的半径，r为取样位置所在处到搅拌槽中轴线的距离，z为取样位置所在处的液面高度，并与固体浓度测量仪PC-6a以及取样管口水平放置的传统取样器测量结果进行了比较，结果如图2所示，本发明的取样器获得了更接近于PC-6a的测量结果。Experiment is carried out in the plexiglass stirring tank of diameter T=380mm, and experiment system is quartz sand (200 orders) and deionized water, and average solid content rate is 5wt% (mass ratio); Static liquid level height H=T, liquid The phase temperature is 22°C; the impeller is a 45° push-down six-fold open turbine impeller, the diameter of the impeller is D=T/3, the height of the impeller from the bottom is C=T/3, the bottom of the elliptical tank, the ratio of the major axis to the minor axis It is 2:1; Taking the lowest point of the center of the elliptical bottom of the stirred tank as the coordinate origin, the sampler described in Example 1 was adopted to measure the solid holdup at the position of (r/R, z/H)=(0.8,0.34) , wherein, r/R and z/H respectively represent the center of the bottom of the stirred tank as the origin, the radial and axial positions, R is the radius of the bottom of the stirred tank, r is the distance from the sampling position to the central axis of the stirred tank, z is the height of the liquid level at the place where the sampling position is located, and compared with the measurement results of the traditional sampler placed horizontally at the solid concentration measuring instrument PC-6a and the sampling nozzle, the result is as shown in Figure 2, and the sampler of the present invention has obtained Much closer to the PC-6a measurements.
实施例3Example 3
利用实施例1所述的取样器测定气液搅拌槽反应器中的局部气体相含率。The sampler described in Example 1 was used to measure the local gas phase holdup in the gas-liquid stirred tank reactor.
实验是在直径T＝380mm的平底有机玻璃搅拌槽中进行，实验体系为空气和去离子水；静止液面高度H＝T，液相温度22℃；搅拌桨为标准Rushton桨，桨直径D＝T/3，桨离底高度C＝T/3；以搅拌槽椭圆底中心最低点为坐标原点，采用实施例1所述的取样器测量了气液搅拌槽内(r/R，z/H)＝(0.8，0.34)位置上气含率，并与电导探针以及取样管口水平放置的传统取样器测量结果进行了比较，结果如图3所示，本发明的取样器均获得了更接近于电导探针的测量结果。The experiment was carried out in a flat-bottomed plexiglass stirring tank with a diameter of T=380mm. The experimental system was air and deionized water; the height of the static liquid level was H=T, and the liquidus temperature was 22°C; the stirring paddle was a standard Rushton paddle, and the diameter of the paddle was D= T/3, paddle height C=T/3 from the bottom; Taking the lowest point of the center of the elliptical bottom of the stirred tank as the coordinate origin, the sampler described in Embodiment 1 was used to measure (r/R, z/H) in the gas-liquid stirred tank )=(0.8,0.34) gas holdup at the position, and compared with the traditional sampler measurement results of the conductivity probe and the horizontal placement of the sampling nozzle mouth, the result is as shown in Figure 3, the sampler of the present invention has all obtained better Close to the measurement results of the conductivity probe.
实施例4Example 4
利用实施例1所述的取样器测定气液固搅拌槽反应器中的局部气相和固体相含率。The sampler described in Example 1 was used to measure the partial gas and solid phase holdups in the gas-liquid-solid stirred tank reactor.
实验是在直径T＝380mm的有机玻璃搅拌槽中进行，实验体系为空气、石英砂(200目)和去离子水，平均固含率为5wt％(质量比)；静止液面高度H＝T，液相温度22℃；搅拌桨为45°下推式六折叶开启涡轮桨，桨直径D＝T/3，桨离底高度C＝T/3，椭圆形槽底，长轴和短轴之比为2:1；以搅拌槽椭圆底中心最低点为坐标原点，采用实施例1所述的取样器，分别测量4个轴向高度上固含率和气含率沿径向的分布，结果如图4和5所示，从图中可以看出，采用该取样器成功测量了三相搅拌槽内的气含率和固含率分布，测量结果与对气液固搅拌槽的定性认识相符。Experiment is carried out in the plexiglass stirring tank of diameter T=380mm, and experiment system is air, quartz sand (200 order) and deionized water, and average solid content rate is 5wt% (mass ratio); Static liquid level height H=T , the liquid phase temperature is 22°C; the impeller is a 45° push-down six-fold open turbine impeller, the diameter of the impeller is D=T/3, the height of the impeller from the bottom is C=T/3, the bottom of the elliptical tank, the major axis and the minor axis The ratio is 2:1; Taking the lowest point of the center of the elliptical bottom of the stirred tank as the coordinate origin, adopt the sampler described in embodiment 1 to measure the distribution of solid holdup and gas holdup along the radial direction on the 4 axial heights respectively, and the result As shown in Figures 4 and 5, it can be seen from the figures that the gas holdup and solid holdup distributions in the three-phase stirred tank have been successfully measured using this sampler, and the measurement results are consistent with the qualitative understanding of the gas-liquid-solid stirred tank .
申请人声明，以上所述仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，所属技术领域的技术人员应该明了，任何属于本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到的变化或替换，均落在本发明的保护范围和公开范围之内。The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, and those skilled in the art should understand that any person skilled in the art should be aware of any disclosure in the present invention Within the technical scope, easily conceivable changes or substitutions all fall within the scope of protection and disclosure of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510931458.3ACN105372099B (en) | 2015-12-15 | 2015-12-15 | A kind of sampler and method measuring the distribution of multiphase flow containing rate |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510931458.3ACN105372099B (en) | 2015-12-15 | 2015-12-15 | A kind of sampler and method measuring the distribution of multiphase flow containing rate |
| Publication Number | Publication Date |
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| CN105372099Atrue CN105372099A (en) | 2016-03-02 |
| CN105372099B CN105372099B (en) | 2018-09-25 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510931458.3AActiveCN105372099B (en) | 2015-12-15 | 2015-12-15 | A kind of sampler and method measuring the distribution of multiphase flow containing rate |
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| CN112461605A (en)* | 2020-09-27 | 2021-03-09 | 山东大学 | Universal time sequence vector submarine sediment catcher and catching method |
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| US5154087A (en)* | 1990-01-29 | 1992-10-13 | Intersystems, Inc. | Sampler apparatus |
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| CN112461605A (en)* | 2020-09-27 | 2021-03-09 | 山东大学 | Universal time sequence vector submarine sediment catcher and catching method |
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