Fluid-driven device for testing performance of detector in pipeline

Abstract

The utility model relates to a fluid-driven performance testing device for a detector in a pipeline, which comprises an open-loop performance testing pipe group, a closed-loop performance testing pipe group and a fluid circulation driving mechanism, and the fluid circulation driving mechanism comprises a first thermal insulation fluid storage tank and a second thermal insulation fluid storage tank. The two heat preservation fluid storage tanks are connected with the pump set and the pump selection valve through a public fluid supply pipeline and connected with a public backflow body pipeline. The downstream of the pump set is connected with a public pump fluid pipeline, the public pump fluid pipeline is connected with two public pipelines, a T-shaped pipe and a closed-loop circulating pipe through a pumping gate valve, and a public backflow body pipeline is connected with the two public pipelines, the T-shaped pipe and the closed-loop circulating pipe through a backwater gate valve; each public pipeline and the closed-loop circulating pipe are independently connected with the closed-loop pipeline through a plurality of closed-loop circulating valves, and each public pipeline is connected with one end of the open-loop pipeline through a plurality of open-loop circulating valves; and the other end of each section of open-loop pipeline is connected with a T-shaped pipe through a branch provided with an open-loop circulating valve.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline internal detector performance testing devices, in particular to a fluid-driven pipeline internal detector performance testing device. Background Technique

[0002] With the rise of the concept of oil and gas pipeline integrity management, pipeline internal detection technology has also developed rapidly. At present, it is generally recognized that pipeline internal detection technology is the most mature, has the best detection effect, the highest cost performance, and is the easiest to promote and apply for in-service pipelines. The so-called pipeline internal detection technology is to detect pipeline defects by using intelligent detection equipment without affecting the oil and gas pipeline transportation conditions, and to evaluate the applicability of the detected defects for scientific and reasonable maintenance. It can not only ensure the safe operation of the pipeline, but also extend the service life of the pipeline. In order to ensure the reliability and effectiveness of pipeline internal detection results, it is necessary to evaluate and verify the performance of pipeline internal detectors. The commonly used pipeline internal detector verification methods include excavation verification and traction verification. If the excavation verification method is adopted, due to the limitation of the number of excavation points, it is limited by the number of excavation points and cannot systematically reflect the comprehensive performance of the internal detection system. If the traction test method is adopted, the straight traction test is difficult to effectively cover more types of defects, cannot verify the bending ability of the pipeline internal detector, cannot simulate the actual fluid medium conditions, and it is difficult to test the reliability, stability and endurance ability of the internal detector. Content of the Utility Model

[0003] In order to solve the above technical problems or at least partially solve the above technical problems, the utility model provides a fluid-driven pipeline internal detector performance testing device.

[0004] The utility model provides a fluid-driven pipeline internal detector performance testing device, including: an open-loop performance testing pipe group and a closed-loop performance testing pipe group surrounding the periphery of the open-loop performance testing pipe group;

[0005] The closed-loop performance test tube group and the open-loop performance test tube group share a set of fluid circulation driving mechanisms; among them, the fluid circulation driving mechanisms include: a first heat-insulated fluid storage tank and a second heat-insulated fluid storage tank provided with exhaust ports, the first heat-insulated fluid storage tank and the second heat-insulated fluid storage tank are connected to a pump group and a pump selection valve through a common fluid supply pipeline, and the first heat-insulated fluid storage tank and the second heat-insulated fluid storage tank are connected to a common fluid return pipeline; the downstream of the pump group is connected to a common pump fluid pipeline, and the common pump fluid pipeline is connected to two common pipelines, a T-shaped pipe and a closed-loop circulation pipe through a pipeline provided with a pumping selection valve, and the common fluid return pipeline is connected to two common pipelines, a T-shaped pipe and a closed-loop circulation pipe through a pipeline provided with a return water selection valve; each of the common pipelines and the closed-loop circulation pipe is independently connected to closed-loop pipelines with different pipe diameters through a number of branches provided with closed-loop circulation valves, and each of the common pipelines is respectively connected to one end of open-loop pipelines with different pipe diameters through a number of branches provided with open-loop circulation valves; the other end of each section of the open-loop pipeline is connected to the T-shaped pipe through a branch provided with an open-loop circulation valve, and two selection valves are arranged on the T-shaped pipe.

[0006] Furthermore, the pump group includes: a first fluid pump, a second fluid pump and a high-low pressure displacement pump, and pump selection valves are arranged at the first fluid pump, the second fluid pump and the high-low pressure displacement pump.

[0007] Furthermore, each group of the open-loop performance test tube groups includes: a number of open-loop pipelines with different pipe diameters and defects, the open-loop pipelines with different pipe diameters are in U shapes of different specifications, the U-shaped open-loop pipelines of different specifications are nested and arranged step by step from large to small, and the openings at both ends of the open-loop pipelines in the same group of open-loop performance test tube groups are aligned, and receiving and sending ball cylinders for receiving and sending in-pipe detectors are respectively arranged at the openings at both ends of the open-loop pipelines; the openings of the two groups of open-loop performance test tube groups are arranged back to back.

[0008] Furthermore, the closed-loop performance test tube group includes: a number of two-section closed-loop pipelines with different pipe diameters and defects, which are in the shapes of "︺" and "︹", circulation regulating valves corresponding to the branch pipes of the common pipelines and the closed-loop circulation pipes are arranged on the closed-loop pipelines, the mouths of the closed-loop pipelines are lifted in an ∫ shape, connection flanges are arranged at the mouths of the closed-loop pipelines, and the mouths of the closed-loop pipelines with the same pipe diameter are arranged opposite to each other;

[0009] Two receiving and sending pipe joints or one receiving and sending pipe joint and a Ω-shaped pipe joint with a set specification for supporting the closed-loop pipeline to have a set undulation and elevation are connected between the opposite mouths of the two-section closed-loop pipelines with the same pipe diameter through connection flanges.

[0010] Furthermore, bellows compensators are respectively arranged at both ends of the receiving and sending pipe joints and the Ω-shaped pipe joints.

[0011] Furthermore, temperature sensors are arranged in the first heat-insulated fluid storage tank and the second heat-insulated fluid storage tank, and heaters are arranged in the first heat-insulated fluid storage tank and the second heat-insulated fluid storage tank.

[0012] Furthermore, a ball-passing indicating sensor is arranged in the open-loop performance test pipe group and the closed-loop performance test pipe group.

[0013] Furthermore, a flowmeter, a pressure sensor and a regulating valve are arranged in the common return fluid pipeline. A one-way bypass is arranged between the common return fluid pipeline and the common pump fluid pipeline for directly discharging the water in the common pump fluid pipeline to the common return fluid pipeline through the one-way bypass. A flowmeter and a pressure sensor are arranged in the common pump fluid pipeline.

[0014] Furthermore, a closed-loop pipeline drain pipe provided with a closed-loop drain valve is connected to each section of the closed-loop pipeline, and an open-loop pipeline drain pipe provided with an open-loop drain valve is connected to each section of the open-loop pipeline; the closed-loop pipeline drain pipe and the open-loop pipeline drain pipe are connected to a reservoir.

[0015] Furthermore, a liquid level sensor is arranged in the first heat-insulated fluid storage tank and the second heat-insulated fluid storage tank. A fluid pump group is installed in the reservoir. The fluid pump group includes a third fluid pump and a fourth fluid pump. The third fluid pump and the fourth fluid pump are connected to the first heat-insulated fluid storage tank and the second heat-insulated fluid storage tank through pipelines. The reservoir is divided into three levels. The open-loop pipeline drain pipe and the closed-loop pipeline drain pipe are connected to the primary pool for sedimentation in the primary pool. The primary pool is connected to a secondary filtration pool. A filter net with a magnet is installed in the secondary filtration pool. The secondary filtration pool is connected to a final pool. The third fluid pump and the fourth fluid pump are arranged in the final pool.

[0016] The above technical solutions provided by the embodiments of the present invention have the following advantages compared with the prior art:

[0017] In this application, the open-loop performance test pipe group integrates open-loop pipelines with different pipe diameters, and the closed-loop performance test pipe group integrates closed-loop pipelines with different pipe diameters, which is suitable for the performance test of pipeline detectors of various models. The open-loop performance test pipe group and the closed-loop performance test pipe group in this application share a set of fluid circulation driving mechanism. The common pipeline, the closed-loop circulation pipe and the T-shaped pipe are controlled to be connected to the common pump water pipe or the common return water pipe through the pumping selection valve and the return water selection valve. The closed-loop pipeline and the open-loop pipeline are selected through the closed-loop circulation valve and the open-loop circulation valve, so that the fluid circulation driving mechanism not only supports the water filling and water circulation of the open-loop performance test pipe group, but also supports the water filling and water circulation of the closed-loop performance test pipe group. The water circulation moves through the pipeline detector to detect abnormalities. It can simulate the actual medium working conditions, can solve the influence of the test experiment under the non-simulated fluid environment, and is of great significance for verifying the passing performance through different elbows, analyzing the velocity effect and quantifying the analysis of irregular defects. Description of the Drawings

[0018] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments in accordance with the present utility model, and are used together with the specification to explain the principles of the present utility model.

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of a performance test device for an in-pipe detector driven by fluid provided by an embodiment of the present utility model.

[0021] Figure 2 It is a schematic diagram of a closed-loop performance test pipe group and a fluid circulation driving mechanism provided by an embodiment of the present utility model;

[0022] Figure 3 It is a schematic diagram of an open-loop performance test pipe group and a fluid circulation driving mechanism provided by an embodiment of the present utility model.

[0023] The reference numerals and their meanings in the drawings are as follows:

[0024] 1. First heat-insulated fluid storage tank, 2. Second heat-insulated fluid storage tank, 3. First fluid pump, 4. High and low pressure displacement pump, 5. Second fluid pump, 6. Pump selection valve, 7. Water storage tank, 8. Fluid pump group, 9. Control room, 10. Closed-loop pipeline, 11. Pig launcher and receiver section, 12. Common pipeline, 13. Closed-loop circulation valve, 14. Closed-loop pipeline drain pipe, 15. Support frame, 16. Open-loop pipeline, 17. Pig launcher and receiver barrel, 18. Open-loop circulation valve, 19. T-shaped pipe, 20. Selective valve, 21. Open-loop pipeline drain pipe, 22. Return water selective valve, 23. Pumping selective valve, 24. Common return fluid pipeline, 25. Common supply fluid pipeline, 26. Common pump fluid pipeline, 27. Closed-loop circulation valve. Detailed implementation manners

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0026] It should be noted that in this article, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0027] Referring to Figure 1 As shown, an embodiment of the present utility model provides a performance test device for an in-pipe detector driven by fluid, comprising:

[0028] Two groups of open-loop performance test pipe groups and a closed-loop performance test pipe group surrounding the periphery of the two groups of open-loop performance test pipe groups.

[0029] In the specific implementation process, each group of the open-loop performance test pipe groups includes: a number of open-loop pipelines 16 with set defects of different pipe diameters. The open-loop pipelines 16 of different pipe diameters are in U-shapes of different specifications. The U-shaped open-loop pipelines 16 are nested in a step-by-step manner from large to small, and the openings at both ends of the open-loop pipelines in the same group of open-loop performance test pipe groups are aligned. The openings at both ends of the open-loop pipelines are respectively provided with pig launchers and receivers 17 for receiving and sending the in-pipe detector; the openings of the two groups of open-loop performance test pipe groups are arranged in opposite directions. In the same open-loop performance test pipe group, the pig launchers and receivers 17 at the ends of the open-loop pipelines 16 are arranged at the same end of the site, which is convenient for assisting the filling and recovery of the in-pipe detector by equipment such as forklifts. The pig launchers and receivers 17 adopt quick-opening blind plates, which support the quick placement and removal of the in-pipe detector. The open-loop pipelines 16 are composed of multiple pipe joints connected by flanges, and some pipe joints of the open-loop pipelines 16 support being replaced with Ω-shaped pipe joints of set specifications, and the Ω-shaped pipe joints cause the open-loop pipelines to have undulations, forming elevation curvature changes.

[0030] The closed-loop performance test pipe group is arranged in a ring shape and surrounds the open-loop performance test pipe group. In the specific implementation process, the open-loop performance test pipe group includes: several two-section closed-loop pipelines 10 with different pipe diameters in the shapes of "︺" and "︹", and the two-section closed-loop pipelines 10 are arranged in an underground pipe gallery covered with precast slabs. Climbing ladders are preset on the side walls of the underground pipe gallery for maintaining the closed-loop pipelines. The mouths of the closed-loop pipelines 10 are lifted out of the underground pipe gallery in the shape of ∫, and connecting flanges are arranged at the mouths of the closed-loop pipelines 10. Moreover, the mouths of the closed-loop pipelines with the same pipe diameter are arranged opposite to each other; two receiving and sending pipe joints 11 are connected between the opposite mouths of the two closed-loop pipelines 10 with the same pipe diameter through connecting flanges, or a receiving and sending pipe joint and an Ω-shaped pipe joint with a set specification that supports the closed-loop pipeline to have a set undulation and elevation are connected; the Ω-shaped pipe joint causes the closed-loop pipeline to have undulations and form elevation changes; in the specific implementation process, the receiving and sending pipe joints 11 and the Ω-shaped pipe joints are arranged on a preset support frame 15; the receiving and sending pipe joints 11, the Ω-shaped pipe joints and the two-section closed-loop pipelines 10 form a circular number of closed-loop performance test pipes. Bellows compensators are respectively arranged at both ends of the receiving and sending pipe joints 11 to compensate for the deformation of the pipeline and facilitate the disassembly and assembly of the receiving and sending pipe joints 11. The receiving and sending cylinders 17 in the two groups of open-loop performance test pipe groups occupy two opposite sides of the site, and the two receiving and sending pipe joints 11 occupy the other two opposite sides of the whole site. During operation, they do not affect each other and are reasonably arranged.

[0031] The closed-loop performance test pipe group and the open-loop performance test pipe group share a set of fluid circulation driving mechanism.

[0032] The fluid circulation driving mechanism includes: a first heat-insulated fluid storage tank 1 and a second heat-insulated fluid storage tank 2 provided with exhaust ports. The first heat-insulated fluid storage tank 1 and the second heat-insulated fluid storage tank 2 support being used as main and standby storage tanks, and the volumes of the first heat-insulated fluid storage tank 1 and the second heat-insulated fluid storage tank 2 support the test drive of the pipeline with the largest volume. The first heat-insulated fluid storage tank 1 and the second heat-insulated fluid storage tank 2 are connected to a pump group and a pump selection valve 6 through a common fluid supply pipeline 25. The pump group includes a first fluid pump 3, a second fluid pump 5 and a high and low pressure displacement pump 4, and pump selection valves 6 are arranged at the first fluid pump 3, the second fluid pump 5 and the high and low pressure displacement pump 4; the first fluid pump 3, the second fluid pump 5 and the high and low pressure displacement pump 4 are all driven by soft start circuits, and the pump selection valve 6 conducts the pipelines where the working first fluid pump 3, second fluid pump 5 and high and low pressure displacement pump 4 are located. The first heat-insulated fluid storage tank 1 and the second heat-insulated fluid storage tank 2 are connected to a common fluid return pipeline 24, and the common fluid return pipeline 24 is connected to two common pipelines 12, a T-shaped pipe 19 and a closed-loop circulation pipe 27 through a pipeline provided with a return water selection valve.

[0033] The first fluid pump 3, the second fluid pump 5 and the high-low pressure displacement pump 4 are connected downstream to a common pump fluid pipeline 26. The common pump fluid pipeline 26 is connected to two common pipelines 12, a T-shaped pipe 19 and a closed-loop circulation pipe 27 through a branch provided with a pumping selector valve 23. Each of the common pipelines 12 is connected to a section of the closed-loop pipeline 10 with different pipe diameters through a branch provided with a closed-loop circulation valve 13 on one hand. On the other hand, each of the common pipelines 12 is connected to one end of the open-loop pipelines 16 with different pipe diameters through a number of branches provided with open-loop circulation valves 18; the common pipeline 12 is connected to the common return fluid pipeline 24 through a branch provided with a return water selector valve 22. A regulating valve and a flowmeter are provided on the common return fluid pipeline 24, and the common return fluid pipeline 24 is connected to the first insulated fluid storage tank 1 and the second insulated fluid storage tank 2; the other end of each section of the open-loop pipeline 16 is connected to the T-shaped pipe 19 through a branch provided with an open-loop circulation valve 18. Two selector valves 20 are provided on the T-shaped pipe 19, and the selector valves 20 control the T-shaped pipe 19 to connect to different open-loop performance test pipe groups. The T-shaped pipe 19 is also connected to the common return fluid pipeline 24 through a branch provided with a return water selector valve 22 and is connected to the common pump fluid pipeline 26 through a branch provided with a pumping selector valve 23.

[0034] Each section of the closed-loop pipeline 10 is connected to a closed-loop pipeline drain pipe 14 provided with a closed-loop drain valve, and each section of the open-loop pipeline 16 is connected to an open-loop pipeline drain pipe 21 provided with an open-loop drain valve; the closed-loop pipeline drain pipe 14 and the open-loop pipeline drain pipe 21 are connected to a reservoir 7.

[0035] As Figure 2 shown, when testing using the closed-loop performance test pipe group, one or both of the common pipeline 12 or the closed-loop circulation pipe 27 are connected to the common pump fluid pipeline 26, and the remaining common pipeline 12 or the closed-loop circulation pipe 27 is connected to the common return fluid pipeline 24. Water is filled into the designated closed-loop pipeline 10 of the closed-loop performance test pipe group through the control of the closed-loop circulation valve 13. After filling with water, the common pipeline 12 and the closed-loop circulation pipe 27 serve as the water supply and return pipelines for the closed-loop performance test pipe group. The pipe sections are sequentially selected through the circulation regulating valve, and the common pipeline 12 or the closed-loop circulation pipe 27 upstream of the pipe section is used as the water supply pipe, and the common pipeline 12 or the closed-loop circulation pipe 27 downstream of the pipe section is used as the return water pipe. The water circulation is controlled in stages to move the in-pipe detector placed through the pigging pipe joint 11. During the process, the regulating valve of the common return fluid pipeline 24 is controlled to adjust the flow rate, and the moving speed of the in-pipe detector is controlled.

[0036] As Figure 3As shown, when using the open-loop performance test pipe group for testing, connect the common pipeline 12 or the T-shaped pipe 19 corresponding to the open-loop performance test pipe group to the common pump fluid pipeline 26, and correspondingly connect the T-shaped pipe 19 or the common pipeline 12 of the corresponding open-loop performance test pipe group to the common return fluid pipeline 24. Control the filling of water into the designated open-loop pipeline 16 of the open-loop performance test pipe group through the open-loop circulation valve 18. After the water filling is completed, place the in-pipe detector into the pipeline through the pig launcher and receiver 17, and control the movement of the in-pipe detector placed through the pig launcher and receiver 17 during the water circulation process. During this process, control the regulating valve of the common return fluid pipeline 24 to adjust the flow rate and control the moving speed of the in-pipe detector driven.

[0037] Level sensors are arranged in the first heat-insulated fluid storage tank 1 and the second heat-insulated fluid storage tank 2, and a fluid pump group 8 is installed in the water storage tank 7. The fluid pump group 8 includes a third fluid pump and a fourth fluid pump, and the third fluid pump and the fourth fluid pump are connected to the first heat-insulated fluid storage tank 1 and the second heat-insulated fluid storage tank 2 through pipelines; the water storage tank 7 is divided into three levels. The open-loop pipeline drain pipe 21 and the closed-loop pipeline drain pipe 14 are connected to the primary pool, and precipitation is carried out in the primary pool. The primary pool is connected to the secondary filtration pool, and a filter net with a magnet is installed in the secondary filtration pool. The secondary filtration pool is connected to the final pool, and the third fluid pump and the fourth fluid pump are arranged in the final pool. After multiple tests, due to the friction of the in-pipe detector and the combined action of water and air, impurities and dirt such as rust will be generated in the test pipeline. After each test is completed, the stored water in the pipeline is drained, and the sewage enters the water storage tank 7. After being precipitated in the primary pool and filtered in the secondary filtration pool, it is pumped back to the first heat-insulated fluid storage tank and the second heat-insulated fluid storage tank by the third fluid pump and the fourth fluid pump. A climbing ladder is pre-welded on the side wall of the water storage tank 7 for maintenance and cleaning personnel to operate.

[0038] Temperature sensors are arranged in the first heat-insulated fluid storage tank 1 and the second heat-insulated fluid storage tank 2, and heaters are arranged in the first heat-insulated fluid storage tank and the second heat-insulated fluid storage tank. To prevent the stored water in the pipeline and the tank body from freezing in winter, the first heat-insulated fluid storage tank 1 and the second heat-insulated fluid storage tank 2 are wrapped with heat-insulating layers, and immersion heaters and temperature sensors are designed. After the winter test, the water stored in the drain pipe is drained and all is recovered and pumped into the first heat-insulated fluid storage tank 1 and the second heat-insulated fluid storage tank 2 by the fluid pump group 8, and the temperature is controlled by the temperature sensor and the heater to ensure the safe wintering of each device in the test site.

[0039] Since flow rate cannot directly reflect the real-time position of the in-pipe detector, especially at elbows, the actual position of the in-pipe detector often lags behind the position reflected by the flow velocity. Therefore, ball passing indication sensors are arranged at the elbows and set nodes of the open-loop performance test pipe group and the closed-loop performance test pipe group. Furthermore, by combining the monitoring of real-time flow rate, the running speed and position of the detector are comprehensively calculated. In one example, a ball passing indication sensor is arranged at each of the fixed positions before and after the elbow, and a ball passing indication sensor is also arranged at each of the fixed positions before and after the pig launcher / receiver and the pig launching / receiving pipe joint. These are arranged on the straight pipe section, and a total of 16 position induction sensors are arranged for each diameter. The ball passing indication sensor is an object sensor based on optoelectronics or ultrasonic waves.

[0040] A control room 9 is provided in the site, and the control room 9 is configured with a power supply system for maintaining the operation of the equipment and a control system for controlling the operation of the equipment.

[0041] In the embodiments provided by the present utility model, it should be understood that the disclosed structure can be implemented in other ways. For example, the structural embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling, direct coupling, or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of structures or units can be in electrical, mechanical, or other forms.

[0042] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0043] In addition, the functional units in each embodiment of the present utility model can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0044] The above are only specific embodiments of the present utility model, enabling those skilled in the art to understand or implement the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A performance testing device for a fluid-driven in-pipe detector, characterized in that, Including: An open-loop performance test tube group and a closed-loop performance test tube group surrounding the periphery of the open-loop performance test tube group; The closed-loop performance test tube group shares a set of fluid circulation driving mechanism with the open-loop performance test tube group; wherein, the fluid circulation driving mechanism includes: a first heat-insulated fluid storage tank and a second heat-insulated fluid storage tank provided with exhaust ports, the first heat-insulated fluid storage tank and the second heat-insulated fluid storage tank are connected to a pump group and a pump selection valve through a common fluid supply pipeline, and the first heat-insulated fluid storage tank and the second heat-insulated fluid storage tank are connected to a common fluid return pipeline; downstream of the pump group is connected to a common pump fluid pipeline, and the common pump fluid pipeline is connected to two common pipelines, a T-shaped pipe and a closed-loop circulation pipe through a pipeline provided with a pumping selection valve, and the common fluid return pipeline is connected to two common pipelines, a T-shaped pipe and a closed-loop circulation pipe through a pipeline provided with a return water selection valve; each of the common pipelines and the closed-loop circulation pipe is independently connected to closed-loop pipelines with different pipe diameters through a number of branches provided with closed-loop circulation valves, and each of the common pipelines is connected to one end of open-loop pipelines with different pipe diameters through a number of branches provided with open-loop circulation valves; the other end of each section of the open-loop pipeline is connected to the T-shaped pipe through a branch provided with an open-loop circulation valve, and two selection valves are provided on the T-shaped pipe.

2. The fluid-driven in-pipe detector performance testing device according to claim 1, wherein The pump group includes: a first fluid pump, a second fluid pump and a high-low pressure displacement pump, and pump selection valves are provided at the first fluid pump, the second fluid pump and the high-low pressure displacement pump.

3. The fluid-driven in-pipe detector performance testing device according to claim 1, characterized in that, Each open-loop performance test tube group includes: a number of open-loop pipelines with different pipe diameters and defects, the open-loop pipelines with different pipe diameters are in U shapes of different specifications, the U-shaped open-loop pipelines of different specifications are nested in a step-by-step manner from large to small, and the openings of the open-loop pipelines in the same open-loop performance test tube group are aligned, and receiving and sending ball cylinders for receiving and sending in-pipe detectors are provided at the openings at both ends of the open-loop pipelines; the openings of the two open-loop performance test tube groups are arranged back to back.

4. The fluid-driven in-pipe detector performance testing device according to claim 1, wherein The closed-loop performance test tube group includes: a number of two-section closed-loop pipelines with different pipe diameters and defects in the shapes of "︺" and "︹", circulation regulating valves corresponding to the branch pipes of the common pipeline and the closed-loop circulation pipe are provided on the closed-loop pipelines, the mouths of the closed-loop pipelines are lifted in an ∫ shape, connecting flanges are provided at the mouths of the closed-loop pipelines, and the mouths of the closed-loop pipelines with the same pipe diameter are arranged oppositely; Between the opposite mouths of two closed-loop pipelines with the same pipe diameter, two receiving and sending ball pipe joints are connected through a connecting flange, or a receiving and sending ball pipe joint and a Ω-shaped pipe joint with a set specification for supporting the closed-loop pipeline to have a set undulation and elevation are connected.

5. The fluid-driven in-pipe detector performance testing device according to claim 4, characterized in that, Bellows compensators are provided at both ends of the receiving and sending ball pipe joint and the Ω-shaped pipe joint.

6. The fluid-driven in-pipe detector performance testing device according to claim 1, wherein Temperature sensors are provided in the first heat-insulated fluid storage tank and the second heat-insulated fluid storage tank, and heaters are provided in the first heat-insulated fluid storage tank and the second heat-insulated fluid storage tank.

7. The fluid-driven in-pipe detector performance testing device according to claim 1, characterized in that, Through-ball indicating sensors are provided in the open-loop performance test tube group and the closed-loop performance test tube group.

8. The fluid-driven in-pipe detector performance testing device according to claim 1, characterized in that, A flow meter, a pressure sensor and a regulating valve are provided in the common return fluid pipeline, and a one-way bypass is provided between the common return fluid pipeline and the common pump fluid pipeline for directly discharging the water in the common pump fluid pipeline to the common return fluid pipeline through the one-way bypass. A flow meter and a pressure sensor are provided in the common pump fluid pipeline.

9. The fluid-driven in-pipe detector performance testing device according to claim 1, characterized in that, Each closed-loop pipeline is connected with a closed-loop pipeline emptying pipe provided with a closed-loop emptying valve, and each open-loop pipeline is connected with an open-loop pipeline emptying pipe provided with an open-loop emptying valve; the closed-loop pipeline emptying pipe and the open-loop pipeline emptying pipe are connected to a reservoir.

10. The fluid-driven in-pipe detector performance testing device according to claim 9, characterized in that Level sensors are provided in the first heat-insulated fluid storage tank and the second heat-insulated fluid storage tank, and a fluid pump group is installed in the reservoir. The fluid pump group includes a third fluid pump and a fourth fluid pump. The third fluid pump and the fourth fluid pump are connected to the first heat-insulated fluid storage tank and the second heat-insulated fluid storage tank through pipelines; the reservoir is divided into three levels. The open-loop pipeline emptying pipe and the closed-loop pipeline emptying pipe are connected to the primary pool, and precipitation is carried out in the primary pool. The primary pool is connected to a secondary filtration pool, and a filter screen with a magnet is installed in the secondary filtration pool. The secondary filtration pool is connected to the final pool. The third fluid pump and the fourth fluid pump are arranged in the final pool.

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