High-temperature and high-pressure cycle test platform

Abstract

The utility model discloses a high-temperature and high-pressure cycle test platform, which comprises a liquid tank, a high-temperature test medium, a high-temperature test platform, a high-temperature test platform and a high-pressure test platform, the skid body comprises a hydraulic pipeline and is used for pressurizing the test medium, conveying the pressurized test medium to a test station for testing and circularly flowing back to the liquid tank; the controller is used for being respectively connected with the liquid tank and the skid body so as to control elements of the liquid tank and the skid body to work; wherein the test medium can flow to the other end of the test station from one end of the test station, and can also flow to one end of the test station from the other end of the test station. The test platform can be used for conveniently testing the plugging capability and the pressure resistance of the bridge plug and the packer.

Description

Technical Field

[0001] The utility model relates to the technical field of downhole tool testing, in particular to a high-temperature and high-pressure circulation testing platform. Background Art

[0002] In the energy industry, bridge plugs and packers are commonly used downhole tools and occupy an important position in energy extraction tools.

[0003] Bridge plug is a tool used for sealing oil and gas wells. It has the characteristics of few construction procedures, short cycle and accurate sealing position. Its uses include replacing cement plugs to seal the bottom layer, seal the well, and exploit the layer, such as plugging the water layer with a combination of pipes, exploiting the oil layer, and being used as a packer for special downhole operations such as squeezing cement, fracturing acidizing and water plugging.

[0004] A packer is a downhole tool that is mainly used to isolate the annular space in oil, gas or water wells. This tool can separate different oil or water layers and withstand a certain pressure difference.

[0005] The quality of bridge plugs and packers is related to the safety of oil and gas extraction. Therefore, they need to be tested at high temperature and high pressure before use to evaluate their plugging ability and pressure resistance to ensure the safety and reliability of oil and gas extraction.

[0006] The medium used in bridge plug and packer testing is mud (oil or water), the test temperature is +10~220℃, the accuracy is ≤±5℃; the maximum test pressure is 10MPa, and the test pressure is adjustable within the range of 1~10MPa. The test system requires that the medium injection direction can be adjusted during the workpiece test, and the mud injection stability problem can be overcome. Utility Model Content

[0007] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one purpose of the utility model is to provide a high temperature and high pressure cycle test platform, which can conveniently test the plugging ability and pressure resistance performance of bridge plugs and packers.

[0008] The technical solution adopted by the utility model is:

[0009] In a first aspect, the utility model provides a high-temperature and high-pressure cycle test platform, which includes: a liquid tank for providing a high-temperature test medium; a skid, including a hydraulic pipeline, for pressurizing the test medium and delivering it to a test station for testing, and then circulating it back to the liquid tank; a controller, which is used to be connected to the liquid tank and the skid, respectively, to control the components of the liquid tank and the skid to work; wherein the test medium can flow from one end of the test station to the other end of the test station, or from the other end of the test station to one end of the test station.

[0010] Among them, the liquid tank also includes: a box body, which is used to accommodate the test medium, and the outer surface of the box body is coated with insulation material; an agitator, which is used to stir the test medium evenly; a heater, which is connected to the controller and is used to heat the test medium; a stirring motor, which is installed inside the box body and is connected to the controller to drive the agitator to work; a safety valve, which is installed on the top of the box body, is used to safely release the pressure of the liquid tank to avoid overpressure inside the liquid tank; a first steam solenoid valve, which is installed on the top of the box body and is connected to the controller, is used to introduce compressed gas into the liquid tank and then adjust the internal pressure of the liquid tank; a second steam solenoid valve, which is installed on the top of the box body and is connected to the controller, is used to discharge water vapor from the liquid tank and then adjust the internal pressure of the liquid tank; a breathing valve, which is installed on the top of the box body, is used to balance the gas pressure in the liquid tank and reduce liquid evaporation; a first stop valve, which is installed on the bottom of the liquid tank, is used to discharge the test medium from the liquid tank after opening the first stop valve.

[0011] The liquid tank further comprises: a magnetic flap level gauge installed on the outside of the liquid tank and used to indicate the medium level of the liquid tank.

[0012] The hydraulic pipeline includes: a first hydraulic pipeline connected to the other end of the test station, the first hydraulic pipeline includes a second stop valve, a first filter, a pre-pump, a boost pump, a one-way valve, a third stop valve and a first pneumatic stop valve arranged in series in sequence; a second hydraulic pipeline connected to the one end of the test station, the second hydraulic pipeline includes a second pneumatic stop valve, a pneumatic regulating valve, and a second filter arranged in series in sequence; the test medium flows to the inlet of the liquid tank through the outlet of the liquid tank, the first hydraulic pipeline, the test station, and then through the second hydraulic pipeline.

[0013] Wherein, the hydraulic pipeline also includes: a third pneumatic stop valve, which is arranged in parallel with the first pneumatic stop valve, one end of the third pneumatic stop valve is connected to the inlet of the first pneumatic stop valve, and the other end of the third pneumatic stop valve is connected to the inlet of the second pneumatic stop valve and the one end of the test station; a fourth pneumatic stop valve, which is arranged in parallel with the second pneumatic stop valve, one end of the fourth pneumatic stop valve is connected to the outlet of the first pneumatic stop valve and the other end of the test station, and the other end of the fourth pneumatic stop valve is connected to the outlet of the second pneumatic stop valve; when When the third pneumatic stop valve and the fourth pneumatic stop valve are closed and the first pneumatic stop valve and the second pneumatic stop valve are opened at the same time, the test medium flows through the first pneumatic stop valve and the other end of the test station to the one end of the test station and the second pneumatic stop valve; when the first pneumatic stop valve and the second pneumatic stop valve are closed and the third pneumatic stop valve and the fourth pneumatic stop valve are opened at the same time, the test medium flows through the third pneumatic stop valve and the one end of the test station to the other end of the test station and the fourth pneumatic stop valve.

[0014] Among them, the hydraulic pipeline also includes a flow meter, a first temperature sensor, a first pressure sensor, a first pressure gauge, a second temperature sensor, a second pressure sensor, and a second pressure gauge: wherein the flow meter and the first temperature sensor are sequentially arranged between the third stop valve and the first pneumatic stop valve; the first pressure sensor and the first pressure gauge are both arranged at the other end of the test station; the second temperature sensor, the second pressure sensor and the second pressure gauge are all arranged at the one end of the test station.

[0015] Among them, the hydraulic pipeline also includes: a pipeline safety valve, the inlet end of the pipeline safety valve is connected to the outlet of the boost pump, and the outlet end of the pipeline safety valve is connected to the liquid tank, which is used to relieve pressure and protect the safety of the pipeline when the pipeline is over-pressured; a fourth stop valve, which is arranged at the outlet of the second hydraulic pipeline and is connected to the inlet of the liquid tank, and is used to add liquid to the liquid tank after opening the fourth stop valve.

[0016] Among them, the second stop valve is used to manually control the on / off of the medium at the inlet of the first hydraulic pipeline; the first filter is used to filter large particles in the test medium of the first hydraulic pipeline; the pre-pump is used to suck the test medium from the liquid tank into the first hydraulic pipeline and preliminarily pressurize the test medium; the booster pump, installed after the pre-pump, is used to secondary pressurize the test medium to reach the required pressure; the one-way valve is used to prevent the medium in the pipeline from flowing back.

[0017] The skid body further includes a control gas circuit, which includes: five solenoid valves, which are used to be connected to the controller, and control the opening and closing of the first pneumatic stop valve, the second pneumatic stop valve, the third pneumatic stop valve, the fourth pneumatic stop valve, and the pneumatic regulating valve by controlling the on and off of the compressed gas; a first pneumatic triplet, which is used to be connected to the first steam solenoid valve and the second steam solenoid valve, and is used to filter and regulate the pressure of the compressed air delivered to the first steam solenoid valve and the second steam solenoid valve; a second pneumatic triplet, which is used to be connected to the five solenoid valves, and is used to filter and regulate the pressure of the compressed air delivered to the five solenoid valves.

[0018] Wherein, the liquid tank further includes: a third temperature sensor, which is used to test the temperature of the medium in the liquid tank.

[0019] The beneficial effects of the utility model are:

[0020] The utility model adopts a test platform, which includes a liquid tank, a skid and a controller. The test platform can provide a high-temperature and high-pressure test medium to the test station, and the flow direction of the test medium can flow from one end of the test station to the other end, and can also flow from the other end of the test station to one end, thereby facilitating the testing of the blocking ability and pressure resistance performance of the bridge plug and the packer.

[0021] Secondly, the utility model adopts a liquid tank with a stirrer and a heater, which can be equipped with a test medium and evenly heated to provide a stable test medium for the test system. In addition, a breathing valve and a steam solenoid valve are installed in the liquid tank. The breathing valve can stabilize the pressure in the liquid tank and reduce the evaporation of the liquid. The steam solenoid valve is used to pass compressed air to pressurize the liquid tank to reduce the evaporation of the liquid during the heating process.

[0022] Thirdly, the booster device of the utility model adopts a dual-pump structure, in which the front pump is responsible for sucking liquid and the booster pump is responsible for boosting pressure, and coordinated operations solve the problem of unstable flow after boosting caused by mud being difficult to absorb.

[0023] In addition, the utility model utilizes the combined on-off of valves to control the flow direction of the medium at the test station, optimizes the system structure, and simplifies the operation means.

[0024] In addition, the utility model uses a hose to connect the pressure sensor and the pressure gauge, which can avoid the influence of system vibration on the measurement result and ensure the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The utility model is a structural schematic diagram of a high-temperature and high-pressure cycle test platform. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0027] See also Figure 1 , Figure 1 This is a schematic diagram of the structure of a high temperature and high pressure cycle test platform of the utility model. Figure 1 As shown, the test platform includes a liquid tank 10, a skid 20 and a controller 30. The liquid tank 10 is used to provide a high-temperature test medium. The skid 20 includes a hydraulic pipeline for pressurizing the test medium and delivering it to the test station for testing, and then circulating it back to the liquid tank 10. The controller 30 is used to be connected to the liquid tank 10 and the skid 20 respectively to control the components of the liquid tank 10 and the skid 20 to work.

[0028] When the test medium is transported to the test station for testing, the test medium can flow from one end of the test station to the other end of the test station, or from the other end of the test station to one end of the test station, that is, the flow direction of the test medium can flow from end B to end A, or from end A to end B. The test station is used to place bridge plugs and packers to test the plugging capacity and pressure resistance performance of bridge plugs and packers.

[0029] like Figure 1As shown, the liquid tank 10 includes a tank body 101 , an agitator 102 , a heater 103 , a stirring motor 104 , a safety valve 105 , a first steam solenoid valve 106 , a second steam solenoid valve 107 , a breathing valve 108 and a first stop valve 109 .

[0030] The box 101 is used to contain the test medium, and the outer surface of the box is coated with a heat-insulating material to reduce the heat dissipation of the test medium.

[0031] The stirrer 102 is used to stir the test medium uniformly.

[0032] The heater 103 is connected to the controller 30 and is used to heat the test medium.

[0033] The stirring motor 104 is installed inside the box 101 and connected to the controller 30 to drive the stirrer 102 to work;

[0034] The safety valve 105 is installed on the top of the box body 101 to safely release the pressure of the liquid tank 10 and avoid overpressure inside the liquid tank 10 .

[0035] The first steam solenoid valve 106 is installed on the top of the tank body 101 and is controlled by the controller 30 to pass compressed gas into the liquid tank 10 to adjust the internal pressure of the liquid tank 10 .

[0036] The second steam solenoid valve 107 is installed on the top of the tank 101 and is controlled by the controller 30 to discharge water vapor from the liquid tank 10 and thus adjust the internal pressure of the liquid tank 10 .

[0037] The breathing valve 108 is installed on the top of the box body 101 to balance the gas pressure in the liquid tank 10 and reduce the evaporation of the liquid.

[0038] The first stop valve 109 is installed at the bottom of the liquid tank, and is used to discharge the test medium from the liquid tank 10 after the first stop valve 109 is opened.

[0039] Optionally, the liquid tank 10 further includes a magnetic flap level gauge 110 and a third temperature sensor 111. The magnetic flap level gauge 110 is installed outside the liquid tank to indicate the liquid level of the medium in the liquid tank 10. The third temperature sensor 111 is used to test the temperature of the medium in the liquid tank 10.

[0040] like Figure 1As shown, the hydraulic pipeline of the skid 20 includes a first hydraulic pipeline and a second hydraulic pipeline. The first hydraulic pipeline is connected to the other end (end B as shown in the figure) of the test station, and the first hydraulic pipeline includes a second stop valve 201, a first filter 202, a pre-pump 203, a booster pump 204, a check valve 205, a third stop valve 206 and a first pneumatic stop valve 207 arranged in series. The second hydraulic pipeline is connected to the one end (end A) of the test station, and the second hydraulic pipeline includes a second pneumatic stop valve 208, a pneumatic regulating valve 209, and a second filter 210 arranged in series. The test medium flows to the inlet of the liquid tank through the outlet of the liquid tank, the first hydraulic pipeline, the test station, and then through the second hydraulic pipeline.

[0041] The second stop valve 201 is used to manually control the opening / closing of the medium at the inlet of the first hydraulic pipeline. That is, when the second stop valve 201 is opened, the test medium flows from the outlet of the liquid tank 10 to the first hydraulic pipeline, and vice versa, the test medium does not flow.

[0042] The first filter 202 is used to filter large particles in the test medium of the first hydraulic line.

[0043] The front pump 203 is used to suck the test medium from the liquid tank 10 into the first hydraulic pipeline and initially pressurize the test medium.

[0044] The booster pump 204 is installed after the pre-pump 203 and is used to boost the test medium for a second time to reach a required pressure.

[0045] The one-way valve 205 is used to prevent the medium in the pipeline from flowing back.

[0046] The third stop valve 206 is used to manually control the opening / closing of the medium at the outlet of the first hydraulic pipeline. That is, when the second stop valve 201 is opened, the test medium flows from the first hydraulic pipeline to the other end of the test station (end B as shown in the figure), otherwise, the test medium does not flow.

[0047] The first pneumatic stop valve 207 is used to automatically control the opening / closing of the medium at the outlet of the first hydraulic pipeline through the controller 30 .

[0048] The second pneumatic stop valve 208 is used to automatically control the on / off of the medium at the inlet of the second hydraulic pipeline through the controller 30 .

[0049] The pneumatic regulating valve 209 is installed in the second hydraulic pipeline and is used to automatically adjust the pipeline flow through the controller 30 .

[0050] The second filter 210 is used to filter large particles in the test medium of the second hydraulic line.

[0051] In order to enable the test medium to flow from the B end to the A end or from the A end to the B end, the hydraulic pipeline further includes a third pneumatic stop valve 211 and a fourth pneumatic stop valve 212 .

[0052] The third pneumatic stop valve 211 is arranged in parallel with the first pneumatic stop valve 207, one end of the third pneumatic stop valve 211 is connected to the inlet of the first pneumatic stop valve 207, and the other end of the third pneumatic stop valve 211 is connected to the inlet of the second pneumatic stop valve 208 and the one end (end A) of the test station;

[0053] The fourth pneumatic stop valve 212 is arranged in parallel with the second pneumatic stop valve 208, one end of the fourth pneumatic stop valve 212 is connected to the outlet of the first pneumatic stop valve 207 and the other end (end B) of the test station, and the other end of the fourth pneumatic stop valve 212 is connected to the outlet of the second pneumatic stop valve 208.

[0054] When the third pneumatic stop valve 211 and the fourth pneumatic stop valve 212 are closed and the first pneumatic stop valve 207 and the second pneumatic stop valve 208 are opened at the same time, the test medium flows through the first pneumatic stop valve 207 and the other end (end B) of the test station to one end (end A) of the test station and the second pneumatic stop valve 208; when the first pneumatic stop valve 207 and the second pneumatic stop valve 208 are closed and the third pneumatic stop valve 211 and the fourth pneumatic stop valve 212 are opened at the same time, the test medium flows through the third pneumatic stop valve 211 and one end (end A) of the test station to the other end (end B) of the test station and the fourth pneumatic stop valve 212.

[0055] Preferably, the hydraulic pipeline further includes a flow meter 213 , a first temperature sensor 214 , a first pressure sensor 215 , a first pressure gauge 216 , a second temperature sensor 217 , a second pressure sensor 218 , and a second pressure gauge 219 .

[0056] The flow meter 213 and the first temperature sensor 214 are sequentially arranged between the third stop valve 206 and the first pneumatic stop valve 207. The flow meter 213 is used to test the flow of the test medium in the hydraulic pipeline. The first temperature sensor 214 is used to test the temperature of the test medium in the first hydraulic pipeline.

[0057] The first pressure sensor 215 and the first pressure gauge 216 are both disposed at the other end (end B) of the test station, and are used to test the medium pressure at the other end (end B) of the test station.

[0058] The second temperature sensor 217, the second pressure sensor 218 and the second pressure gauge 219 are all disposed at the one end (end A) of the test station, and are used to test the medium temperature and pressure at the one end (end A) of the test station.

[0059] It should be noted here that the connecting pipes between the components in the hydraulic pipeline are composed of various steel pipes and hoses for conveying the test medium, and the outer surface of the pipe is wrapped with an insulation layer to prevent the high-temperature medium from cooling during the conveying process. The first pressure sensor 215, the first pressure gauge 216, the second pressure sensor 218, and the second pressure gauge 219 are not directly installed in the hydraulic pipeline, but are connected to the hydraulic pipeline with a hose, so as to avoid the influence of pipeline vibration on the measurement results.

[0060] Optionally, the hydraulic pipeline further includes a pipeline safety valve 220 and a fourth stop valve 221. The inlet end of the pipeline safety valve 220 is connected to the outlet of the booster pump 203, and the outlet end of the pipeline safety valve 220 is connected to the liquid tank 10, which is used to relieve pressure when the pipeline is over-pressured to protect the pipeline safety. The fourth stop valve 220 is arranged at the outlet of the second hydraulic pipeline and is connected to the inlet of the liquid tank 10, and is used to add liquid to the liquid tank 10 after opening the fourth stop valve 220.

[0061] In addition, the skid 20 also includes a control gas circuit, which includes five solenoid valves 222, a first pneumatic triplet 223, and a second pneumatic triplet 224. The five solenoid valves 222 are used to be controlled by the controller 30, and control the opening and closing of the first pneumatic stop valve 207, the second pneumatic stop valve 208, the third pneumatic stop valve 211, the fourth pneumatic stop valve 212, and the pneumatic regulating valve 209 by controlling the on and off of the compressed gas. The first pneumatic triplet 223 is used to be connected to the first steam solenoid valve 106 and the second steam solenoid valve 107, respectively, and is used to filter and regulate the compressed air delivered to the first steam solenoid valve 106 and the second steam solenoid valve 107. The second pneumatic triplet 224 is used to be connected to the five solenoid valves 222, respectively, and is used to filter and regulate the compressed air delivered to the five solenoid valves 222.

[0062] The workflow of this utility model is as follows:

[0063] All devices of this test platform are in a closed state before working. During working, the controller 30 starts the stirring motor 104 and the heater 103 to prepare the medium with the required concentration and temperature for the test. At this time, the liquid level height of the test can be observed in real time through the magnetic flap level meter 110. The second stop valve 201, the first filter 202, the pre-pump 203, the booster pump 204, the one-way valve 205, the third stop valve 206, and the second filter 210 are manually opened, and the pneumatic regulating valve 209 is opened through the controller 30.

[0064] When the test medium needs to be tested from B to A, the controller 30 opens the first pneumatic stop valve 207 and the second pneumatic stop valve 208, and closes the third pneumatic stop valve 211 and the fourth pneumatic stop valve 212. At this time, the test medium flows to the inlet of the liquid tank 10 through the outlet of the liquid tank 10, the second stop valve 201, the first filter 202, the pre-pump 203, the booster pump 204, the one-way valve 205, the third stop valve 206, the first pneumatic stop valve 207, the test station B end, the test station A end, and then through the second pneumatic stop valve 208, the pneumatic regulating valve 209, and the second filter 210.

[0065] When the test medium needs to be tested from A to B, the controller 30 opens the third pneumatic stop valve 211 and the fourth pneumatic stop valve 212, and closes the first pneumatic stop valve 207 and the second pneumatic stop valve 208. At this time, the test medium flows to the inlet of the liquid tank 10 through the outlet of the liquid tank 10, the second stop valve 201, the first filter 202, the pre-pump 203, the booster pump 204, the one-way valve 205, the third stop valve 206, the third pneumatic stop valve 211, the test station A end, the test station B end, and then through the fourth pneumatic stop valve 212, the pneumatic regulating valve 209, and the second filter 210.

[0066] During the test, the controller 30 can receive the values ​​returned by the first temperature sensor 214, the first pressure sensor 215, the second temperature sensor 217, and the second pressure sensor 218 in real time, so as to know the pressure and temperature of the test medium at the inlet and outlet of the test station respectively.

[0067] In addition, the tester can also adjust the opening degree of the pneumatic regulating valve 209 and thus adjust the pipeline flow according to the displayed flow of the flow meter 213. The tester can also know the medium pressure at the entrance and exit of the test station according to the displayed pressure of the first pressure gauge 216 and the second pressure gauge 219.

[0068] In addition, the utility model adopts explosion-proof electrical components and can be applied to occasions with explosion-proof requirements.

[0069] The above is a specific description of the preferred implementation of the utility model, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the utility model. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A high temperature and high pressure cycle test platform, characterized in that: include: Liquid tank, used to provide high temperature test medium; A skid body, including a hydraulic pipeline, for conveying the test medium to the test station for testing after pressurization, and then circulating the test medium back to the liquid tank; A controller, used to be connected to the liquid tank and the skid, respectively, to control the components of the liquid tank and the skid to operate; The test medium may flow from one end of the test station to the other end of the test station, or may flow from the other end of the test station to one end of the test station.

2. The test platform according to claim 1, characterized in that: The liquid tank also includes: A box body, used to contain the test medium, the outer surface of the box body being coated with a heat-insulating material; A stirrer, used to stir the test medium uniformly; A heater, connected to the controller, for heating the test medium; A stirring motor is installed inside the box body and connected to the controller to drive the stirrer to work; A safety valve, installed on the top of the tank body, is used for safe pressure relief of the liquid tank to avoid overpressure inside the liquid tank; A first steam solenoid valve, installed on the top of the tank body, connected to the controller, and used to pass compressed gas into the liquid tank to adjust the internal pressure of the liquid tank; A second steam solenoid valve, installed on the top of the tank, connected to the controller, for discharging water vapor from the liquid tank and thus adjusting the internal pressure of the liquid tank; A breathing valve is installed on the top of the tank body to balance the gas pressure in the liquid tank and reduce liquid evaporation; A first stop valve is installed at the bottom of the liquid tank and is used to discharge the test medium from the liquid tank after the first stop valve is opened.

3. The test platform according to claim 2, characterized in that: The liquid tank also includes: The magnetic flap level gauge is installed on the outside of the liquid tank and is used to indicate the medium level of the liquid tank.

4. The test platform according to claim 2, characterized in that: The hydraulic pipeline comprises: A first hydraulic pipeline is connected to the other end of the test station, the first hydraulic pipeline comprising a second stop valve, a first filter, a pre-pump, a booster pump, a one-way valve, a third stop valve and a first pneumatic stop valve which are sequentially arranged in series; A second hydraulic pipeline is connected to the one end of the test station, the second hydraulic pipeline comprising a second pneumatic stop valve, a pneumatic regulating valve, and a second filter which are sequentially arranged in series; The test medium flows through the outlet of the liquid tank, the first hydraulic pipeline, the test station, and then through the second hydraulic pipeline to the inlet of the liquid tank.

5. The test platform according to claim 4, characterized in that: The hydraulic pipeline also includes: a third pneumatic stop valve, arranged in parallel with the first pneumatic stop valve, one end of the third pneumatic stop valve being connected to the inlet of the first pneumatic stop valve, and the other end of the third pneumatic stop valve being connected to the inlet of the second pneumatic stop valve and the one end of the test station; a fourth pneumatic stop valve, arranged in parallel with the second pneumatic stop valve, one end of the fourth pneumatic stop valve being connected to the outlet of the first pneumatic stop valve and the other end of the test station, and the other end of the fourth pneumatic stop valve being connected to the outlet of the second pneumatic stop valve; When the third pneumatic stop valve and the fourth pneumatic stop valve are closed and the first pneumatic stop valve and the second pneumatic stop valve are opened at the same time, the test medium flows through the first pneumatic stop valve and the other end of the test station to the one end of the test station and the second pneumatic stop valve; when the first pneumatic stop valve and the second pneumatic stop valve are closed and the third pneumatic stop valve and the fourth pneumatic stop valve are opened at the same time, the test medium flows through the third pneumatic stop valve and the one end of the test station to the other end of the test station and the fourth pneumatic stop valve.

6. The test platform according to claim 4, characterized in that: The hydraulic pipeline also includes a flow meter, a first temperature sensor, a first pressure sensor, a first pressure gauge, a second temperature sensor, a second pressure sensor, and a second pressure gauge: Among them, the flow meter and the first temperature sensor are arranged respectively between the third stop valve and the first pneumatic stop valve; the first pressure sensor and the first pressure gauge are both arranged at the other end of the test station; the second temperature sensor, the second pressure sensor and the second pressure gauge are all arranged at the one end of the test station.

7. The test platform according to claim 4, characterized in that: The hydraulic pipeline also includes: A pipeline safety valve, the inlet end of which is connected to the outlet of the booster pump, and the outlet end of which is connected to the liquid tank, for relieving pressure and protecting the pipeline safety when the pipeline is over-pressured; A fourth stop valve is arranged at the outlet of the second hydraulic pipeline and is connected to the inlet of the liquid tank, and is used to add liquid to the liquid tank after opening the fourth stop valve.

8. The test platform according to claim 4, characterized in that: The second stop valve is used to manually control the on / off of the medium at the inlet of the first hydraulic pipeline; the first filter is used to filter large particles in the test medium of the first hydraulic pipeline; the pre-pump is used to suck the test medium from the liquid tank into the first hydraulic pipeline and preliminarily pressurize the test medium; the booster pump, installed after the pre-pump, is used to secondary pressurize the test medium to reach the required pressure; the one-way valve is used to prevent the medium in the pipeline from flowing back.

9. The test platform according to any one of claims 5 to 8, characterized in that: The skid body also includes a control air circuit, and the control air circuit includes: Five solenoid valves, connected to the controller, respectively controlling the opening and closing of the first pneumatic stop valve, the second pneumatic stop valve, the third pneumatic stop valve, the fourth pneumatic stop valve, and the pneumatic regulating valve by controlling the on and off of compressed gas; A first pneumatic triplet, used to be connected to the first steam solenoid valve and the second steam solenoid valve respectively, and used to filter and regulate the pressure of the compressed air delivered to the first steam solenoid valve and the second steam solenoid valve; The second pneumatic triplet is used to be connected to the five solenoid valves respectively, and is used to filter and regulate the pressure of the compressed air delivered to the five solenoid valves.

10. The test platform according to claim 6, characterized in that: The liquid tank also includes: The third temperature sensor is used to test the temperature of the medium in the liquid tank.

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