Fluid control element testing device

Abstract

The utility model provides a kind of liquid control element testing device, including hydraulic container, output assembly and reflux subassembly;Hydraulic container is provided with liquid level observation scale;Output assembly includes the liquid outlet line of being provided with knockdown pump, one end of liquid outlet line is connected hydraulic container, other end is configured to be able to connect workpiece to be measured;Reflux subassembly includes the first reflux line of being provided with pressure gauge and pressure relief valve, pressure gauge is located in the upstream of pressure relief valve, one end of first reflux line is connected liquid outlet line, other end is connected hydraulic container.Based on the technical scheme of the utility model, a test pipe structure that can be connected with the measured element to form a complete hydraulic system is constructed, by observing the pressure drop and hydraulic medium reflux of the hydraulic system, the sealing property and the reliability of reset function of the measured element can be accurately determined.

Description

Technical Field

[0001] This utility model relates to the field of liquid control component testing technology, and in particular to a liquid control component testing device. Background Technology

[0002] Wellhead hydraulic control cabinets are crucial equipment for ensuring well control safety. By controlling the surface and downhole safety valves at the wellhead, they ensure rapid well closure in emergencies, preventing accidents such as blowouts and providing vital support for safety management and accident prevention. The working principle of the wellhead hydraulic control cabinet is as follows: When the system issues a shutdown signal, the solenoid valve first actuates to release the pilot control pressure. The hand-operated valve automatically rebounds to the vent position after losing pressure. The control oil pressure of the pilot valve is released to the oil tank through the vent position of the hand-operated valve. After the pilot valve loses pressure, the main oil circuit automatically opens to release pressure. After the main oil circuit loses pressure, the rapid relief valve, under the action of pressure differential, actuates the valve core to release the hydraulic oil in the hydraulic gate valve to the oil tank, closing the hydraulic gate valve. Therefore, the functionality and sealing of its internal components are critical. If any component fails to operate or operates slowly during operation, the valve will not close or will remain closed for an extended period. Poor sealing performance will cause pressure fluctuations and unstable operation. Therefore, the reliability of hydraulic control components is extremely important. Before being put into use, their functionality and pressure must be tested to avoid potential safety hazards during operation.

[0003] Existing testing methods typically involve observing external leaks to test hydraulic control components. This method is susceptible to the inaccuracy of human observation, resulting in poor test accuracy. Furthermore, existing testing methods lack comprehensive functionality, primarily limiting testing to sealing performance and failing to perform tests in other directions. Utility Model Content

[0004] In order to solve the above-mentioned technical problems in the prior art, this utility model proposes a liquid control component testing device.

[0005] This utility model proposes a testing device for hydraulic control components, which includes: Hydraulic containers are equipped with liquid level observation scales; An output component includes a liquid outlet line equipped with a pressure pump, one end of which is connected to the hydraulic container and the other end configured to connect to the device under test; and The reflux assembly includes a first reflux line equipped with a pressure gauge and a pressure relief valve, wherein the pressure gauge is located upstream of the pressure relief valve, one end of the first reflux line is connected to the liquid outlet line, and the other end is connected to the hydraulic container.

[0006] In one embodiment, a timer is also included, which is linked to the pressure relief valve.

[0007] In one embodiment, the pressure relief valve is configured as a manual valve, the timer switch is configured as a physical switch corresponding to the valve stem of the pressure relief valve, and the valve stem of the pressure relief valve is configured to activate the timer switch when an opening action is performed; or The pressure relief valve is constructed as an electromagnetic valve, and the timer switch is constructed as an electromagnetic switch electrically connected to the same controller as the pressure relief valve.

[0008] In one embodiment, the reflux assembly further includes a second reflux line equipped with a safety valve, one end of the second reflux line being connected to the liquid outlet line and the other end being connected to the hydraulic container.

[0009] In one embodiment, a damper is provided on the second return line upstream of the safety valve, the damper having a damping structure inside, and the pressure of the pressure medium in the second return line can act on the damping structure.

[0010] In one embodiment, a pressure gauge is provided on the second return line upstream of the safety valve.

[0011] In one embodiment, a check valve is provided on the outlet line downstream of the pressure pump.

[0012] In one embodiment, a filter is provided on the outlet line upstream of the pressure pump.

[0013] In one embodiment, one end of the first return pipeline is provided with a docking structure, the docking structure including a connector and a locking member, the connector being used to connect to the interface of the device under test, and the locking member being used to lock the docking state between the connector and the interface of the device under test.

[0014] In one embodiment, a test platform is also included, on which the hydraulic container, output component, and return component are all disposed.

[0015] The above-mentioned technical features can be combined in various suitable ways or replaced by equivalent technical features, as long as the purpose of this utility model can be achieved.

[0016] The liquid control component testing device provided by this utility model has at least the following advantages compared with the prior art: This invention relates to a hydraulic component testing device, which constructs a test tube structure that can be connected to the component under test to form a complete hydraulic system. By observing the pressure drop and hydraulic medium backflow of the hydraulic system, the sealing performance and reset function reliability of the component under test can be accurately determined. Attached Figure Description

[0017] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings. Wherein: Figure 1 The schematic diagram of the testing device of this utility model is shown (top view).

[0018] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not to scale.

[0019] Figure label: 1-Hydraulic container, 11-Liquid level observation scale, 2-Output component, 21-Outlet pipeline, 22-Pressure pump, 23-Check valve, 24-Filter, 3-Return assembly, 31-First return pipeline, 32-Pressure gauge, 33-Pressure relief valve, 34-Second return pipeline, 35-Safety valve, 36-Damper, 4-Test platform, 5-Component under test. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] An embodiment of this utility model provides a hydraulic component testing device, which includes a hydraulic container 1, an output component 2, and a return component 3. The hydraulic container 1 is provided with a liquid level observation scale 11; the output component 2 includes a liquid outlet pipe 21 equipped with a pressure pump 22, one end of the liquid outlet pipe 21 is connected to the hydraulic container 1, and the other end is configured to connect to the component under test 5; the return component 3 includes a first return pipe 31 equipped with a pressure gauge 32 and a pressure relief valve 33, the pressure gauge 32 is located upstream of the pressure relief valve 33, one end of the first return pipe 31 is connected to the liquid outlet pipe 21, and the other end is connected to the hydraulic container 1.

[0022] Specifically, the hydraulic control component testing device of this utility model is mainly used to test hydraulic control components in some hydraulic control systems, including but not limited to the hydraulic control components in the hydraulic control cabinet mentioned in the background art above. These hydraulic control components include but are not limited to hydraulic control valves, hydraulic sensing devices, etc.

[0023] As shown in the attached figure. Figure 1As shown, the testing device of this utility model mainly includes a hydraulic container 1, an output component 2, and a return component 3. The hydraulic container 1 is used to contain the corresponding hydraulic medium, such as hydraulic oil in this embodiment. The hydraulic container 1 has a liquid level observation scale 11, which is used to indicate the amount of hydraulic medium in the container. The specific structure of the liquid level observation scale 11 can be a transparent observation window with graduations on the wall of the hydraulic container 1, or a graduated liquid level gauge based on the principle of communicating vessels can be installed on the hydraulic container 1. The output component 2 mainly includes an outlet pipe 21, which connects the hydraulic container 1 and the element under test 5. A pressure pump 22 installed on the outlet pipe 21 pumps the hydraulic medium to the element under test 5. One end of the first return pipeline 31 of the return assembly 3 is connected to the hydraulic container 1, and the other end is connected to the outlet pipeline 21, with the connection point located downstream of the pressure pump 22. The pressure gauge 32 on the first return pipeline 31 is used to monitor the pressure in the entire pipeline, and the pressure relief valve 33 is used to control the opening and closing of the first return pipeline 31 to the hydraulic container 1.

[0024] In use, the component under test (DUT) 5 is connected to the outlet pipe 21, forming a hydraulic system together with the testing device's piping. A pressure pump 22 (which can be manual) first pumps the pressurized medium from the hydraulic container 1 into the pipe, controlling the pressure to fill the entire pipe without affecting the internal moving parts of the DUT 5 (e.g., the valve core of a hydraulic valve). The liquid level reading is recorded at this point. Pressure is then continued until the pressurized medium affects the internal moving parts of the DUT 5, until the pressure gauge 32 on the first return pipe 31 reaches the predetermined test pressure. The pressure drop of the entire system per unit time is then observed using the pressure gauge 32. The sealing performance of the DUT 5 is determined based on whether the pressure drop exceeds the corresponding threshold. Finally, open the pressure relief valve 33 to allow the pressure medium to flow back into the hydraulic container 1. After the liquid level reading in the hydraulic container 1 stabilizes, compare the current liquid level reading with the previously recorded reading to determine whether the internal moving parts of the tested element 5 have fully reset. If the previously recorded liquid level reading is greater than the current liquid level reading, it indicates that the internal moving parts of the tested element 5 have not fully reset. If this hydraulic control element is used in the hydraulic control cabinet mentioned in the background art, its incomplete reset will cause the oil circuit chain reaction to stop, so the reset test of this hydraulic control element fails.

[0025] In addition, before use, the external end of the test pipeline should be sealed, and the sealing performance of the device itself should be tested in the same way as observing the pressure drop, so as to ensure the accuracy of the subsequent test results for the component under test 5.

[0026] Therefore, the testing device of this utility model constructs a test tube structure that can be connected to the component under test 5 to form a complete hydraulic system. By observing the pressure drop and hydraulic medium backflow of the hydraulic system, the sealing performance and reset function reliability of the component under test 5 can be accurately determined.

[0027] Furthermore, as shown in the attached figure Figure 1 As shown, the testing device also includes a testing platform 4, and the hydraulic container 1, output component 2 and return component 3 are all set on the testing platform 4.

[0028] Preferably, the testing device also includes a timer (not shown in the accompanying drawings). The timer can be set at any position on the testing platform 4, as long as it is convenient for observation. Functionally, the timer is linked to the pressure relief valve 33. During the test, when the pressure relief valve 33 is opened, allowing the pressure medium to flow back to the hydraulic container 1, the timer starts timing synchronously. The timing stops after the action of the moving part inside the component under test 5 is completed. The observation of the completion of the action can be done directly depending on the type of component under test 5, or by observing whether the liquid level in the hydraulic container 1 changes to a stable level. By comparing the duration of the action completion with the normal duration, it is determined whether the operating performance of the component under test 5 is normal.

[0029] In one embodiment, the pressure relief valve 33 is configured as a manual valve, and the timer's timing switch is configured as a physical switch corresponding to the valve stem of the pressure relief valve 33, and the valve stem of the pressure relief valve 33 is configured to trigger the timing switch when the opening action is performed; or, the pressure relief valve 33 is configured as a solenoid valve, and the timer's timing switch is configured as a solenoid switch electrically connected to the same controller as the pressure relief valve 33.

[0030] Specifically, regarding the implementation of the linkage between the timer and the pressure relief valve 33, there are at least two methods depending on the type of pressure relief valve 33. If the pressure relief valve 33 is a manual valve, the timer's switch is set as a physical switch corresponding to the valve stem of the pressure relief valve 33. When the valve stem of the pressure relief valve 33 performs an opening action, it can abut against the switch, achieving functional linkage. If the pressure relief valve 33 is set as an automatically controllable solenoid valve, the timer's timing switch is also set as a solenoid switch. Both are electrically connected to the controller (PLC) and controlled synchronously. The controller can be set on the test platform 4 and has an interactive mechanism for personnel interaction (buttons, touch screen, etc.).

[0031] In one embodiment, the reflux assembly 3 further includes a second reflux line 34 provided with a safety valve 35, one end of the second reflux line 34 being connected to the liquid outlet line 21 and the other end being connected to the hydraulic container 1.

[0032] Specifically, as shown in the attached diagram. Figure 1As shown, the return pipeline also includes a second return pipeline 34 connected in parallel with the first return pipeline 31. The second return pipeline 34 is primarily used to ensure the safety of the test system. Specifically, the second return pipeline 34 is equipped with a safety valve 35 that can automatically relieve pressure. Once the pressure in the test pipeline system exceeds the safety threshold, the valve core of the safety valve 35 will open under pressure, allowing the pressure medium to flow back to the hydraulic container 1 through the second return pipeline 34, thus preventing safety issues caused by excessive pressure.

[0033] In one embodiment, a damper 36 is provided on the second return line 34 upstream of the safety valve 35. The damper 36 has a damping structure inside, and the pressure of the pressure medium in the second return line 34 can act on the damping structure.

[0034] Specifically, as shown in the attached diagram. Figure 1 As shown, the second return line 34 is connected to a damper 36. The damper 36 has a damping structure (such as an elastic structure based on springs or other elastic elements) inside. It can act under the action of the pressure medium in the second return line 34. The damping structure itself has a certain preset pressure, which can buffer the pressure fluctuation in the second return line 34 and improve the pressure stability of the entire test line.

[0035] Optionally, a pressure gauge 32 is installed upstream of the safety valve 35 on the second return line 34. The pressure drop of the pressure gauge 32 on the second return line 34 can then be observed and compared with the pressure gauge 3 on the second return line 31 to comprehensively determine the sealing performance of the component under test 5. The two pressure gauges 32 improve the accuracy of the judgment and the tolerance for pressure gauge 32 failures.

[0036] In one embodiment, a one-way valve 23 is provided on the outlet pipeline 21 downstream of the pressure pump 22 to prevent backflow of the pressure medium in the outlet pipeline 21 and ensure the accuracy of the test; a filter 24 is provided on the outlet pipeline 21 upstream of the pressure pump 22 to filter impurities that may exist in the pressure medium and avoid affecting the smooth flow of the test pipeline and the normal operation of the corresponding test components.

[0037] In one embodiment, one end of the first return line 31 is provided with a docking structure (not shown in the figure). The docking structure includes a connector and a locking member. The connector is used to connect with the interface of the test element 5, and the locking member is used to lock the docking state between the connector and the interface of the test element 5.

[0038] Specifically, the docking structure is mainly used to connect the component under test 5. The connector is a tubular structure used to connect and communicate with the interface of the component under test 5. The locking element is used to lock the docking state and maintain the stability of the docking. Depending on the specific docking situation, the locking element can be a flange structure, a locking nut, or a clamp, etc.

[0039] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] While specific embodiments of the present invention have been described herein with reference to them, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A testing device for hydraulic control components, characterized in that, include: Hydraulic containers are equipped with liquid level observation scales; The output component includes a liquid outlet line equipped with a pressure pump, one end of which is connected to the hydraulic container and the other end is configured to connect to the element under test. as well as The reflux assembly includes a first reflux line equipped with a pressure gauge and a pressure relief valve, wherein the pressure gauge is located upstream of the pressure relief valve, one end of the first reflux line is connected to the liquid outlet line, and the other end is connected to the hydraulic container.

2. The hydraulic control component testing device according to claim 1, characterized in that, It also includes a timer, which is linked to the pressure relief valve.

3. The hydraulic control component testing device according to claim 1, characterized in that, The pressure relief valve is a manual valve, and the timer switch is a physical switch corresponding to the valve stem of the pressure relief valve. The valve stem of the pressure relief valve is designed to activate the timer switch when the opening action is performed; or The pressure relief valve is constructed as an electromagnetic valve, and the timer switch is constructed as an electromagnetic switch electrically connected to the same controller as the pressure relief valve.

4. The hydraulic control component testing device according to claim 1, characterized in that, The reflux assembly also includes a second reflux line equipped with a safety valve, one end of which is connected to the liquid outlet line and the other end of which is connected to the hydraulic container.

5. The hydraulic control component testing device according to claim 4, characterized in that, A damper is installed upstream of the safety valve on the second return pipeline. The damper has a damping structure inside, and the pressure of the pressure medium in the second return pipeline can act on the damping structure.

6. The hydraulic control component testing device according to claim 4, characterized in that, A pressure gauge is installed upstream of the safety valve on the second return line.

7. The hydraulic control component testing device according to claim 1, characterized in that, A check valve is installed downstream of the pressure pump on the liquid outlet pipeline.

8. The hydraulic control component testing device according to claim 1 or 7, characterized in that, A filter is installed upstream of the pressure pump on the liquid outlet pipeline.

9. The hydraulic control component testing device according to claim 1, characterized in that, One end of the first return pipeline is provided with a docking structure, which includes a connector and a locking member. The connector is used to connect with the interface of the device under test, and the locking member is used to lock the connection state between the connector and the interface of the device under test.

10. The hydraulic control component testing device according to claim 1, characterized in that, It also includes a test platform, on which the hydraulic container, output component, and return component are all mounted.

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