Energy storage and pressure stabilization test device for valve pressure test

Abstract

The utility model discloses an energy storage and pressure stabilization test device for a valve pressure test, and relates to the technical field of valve test detection. One end of the energy storage tank assembly is connected to the output end of the hydraulic pump, the other end of the energy storage tank assembly is connected to the input end of the pressure reduction stop valve, and an exhaust hole is formed in the top of the energy storage tank assembly. The sealing assembly is arranged on the exhaust hole and used for blocking the exhaust hole. The output end of the pressure reduction stop valve is connected to the input end of the main pipeline; the input end of the auxiliary pipeline is connected to the second output end of the main pipeline; the output end of the auxiliary pipeline is connected to the pressure monitoring assembly. The first output end of the main pipeline is connected to a to-be-detected valve. Energy of the hydraulic pump is stored through the energy storage tank assembly, and release of the energy is controlled through the pressure reduction stop valve. Meanwhile, in combination with the real-time monitoring function of the pressure monitoring assembly, the test safety and accuracy of products such as precision valves and ultra-low pressure valves can be powerfully guaranteed, and the pressure test requirements of various valve products can be met.

Description

Technical Field

[0001] The present application relates to the technical field of valve testing and detection, and in particular to an energy storage and pressure stabilization testing device for valve pressure testing. Background Art

[0002] Valve liquid pressure test is a key step in evaluating valve performance. This test simulates the pressure conditions that the valve may be subjected to in the actual working environment to ensure that its structural integrity, sealing and functionality meet the design requirements. During this test, the liquid test pressure is usually provided by high-performance hydraulic pump systems that can generate the necessary pressure level to verify the pressure-bearing capacity of the valve.

[0003] However, the traditional hydraulic pump design is based on the reciprocating or plunger working principle, which results in a pulsed fluctuation in the output pressure. This fluctuation characteristic is usually not a problem in the testing of conventional valves, because these valve designs have a certain tolerance for pressure fluctuations, and the test focuses on verifying the sealing and structural strength of the valve under continuous pressure. Therefore, for most standard applications, the pulse boost method provided by the hydraulic pump is sufficient to meet the testing needs.

[0004] However, with the continuous advancement of industrial technology, the application of precision valves and ultra-low pressure valves is becoming more and more extensive. These valves have extremely high requirements for the accuracy and stability of pressure control. They are often used in situations that require fine flow control, extremely low leakage rate or extremely high sensitivity. In this context, the pulse fluctuation boosting method generated by traditional hydraulic pumps is inappropriate. Pulse pressure may not only cause damage to precision components and affect the long-term stability and sealing performance of the valve, but also cause fluctuations in the readings of the test pressure gauge, increasing the error of the test results, and thus failing to meet the strict requirements of precision valves and ultra-low pressure valves for test accuracy and reliability. Utility Model Content

[0005] The embodiment of the present application solves the technical problem in the prior art that the pulse fluctuation boosting method generated by the hydraulic pump may cause damage to precision components and affect the long-term stability and sealing performance of the valve by providing an energy storage and pressure stabilization test device for valve pressure testing.

[0006] An embodiment of the present application provides an energy storage and pressure stabilization test device for a valve pressure test, comprising an energy storage tank assembly, a pressure reducing stop valve, a main pipeline, a secondary pipeline, a sealing assembly and a pressure monitoring assembly; one end of the energy storage tank assembly is connected to the output end of a hydraulic pump, and the other end thereof is connected to the input end of the pressure reducing stop valve, and an exhaust hole is provided on the top of the energy storage tank assembly; the sealing assembly is provided at the exhaust hole to block the exhaust hole; the output end of the pressure reducing stop valve is connected to the input end of the main pipeline; the input end of the secondary pipeline is connected to the second output end of the main pipeline; the output end of the secondary pipeline is connected to the pressure monitoring assembly; and the first output end of the main pipeline is connected to the valve to be tested.

[0007] In a possible implementation, the pressure monitoring assembly includes a U-shaped tube and two pressure gauges; the bottom of the U-shaped tube is connected to the output end of the secondary pipeline; the two pressure gauges are detachably connected to the two ports at the top of the U-shaped tube.

[0008] In a possible implementation, the sealing assembly includes a tank branch pipe, a first flange, a second flange, a sealing gasket and a plug; the tank branch pipe is arranged at the exhaust hole; the first flange is connected to an end of the tank branch pipe away from the exhaust hole; the second flange is detachably connected to the first flange; the exhaust hole, the threaded hole of the first flange and the threaded hole of the second flange are connected; the sealing gasket is arranged between the first flange and the second flange; the plug is used to seal the threaded hole of the second flange.

[0009] In a possible implementation, the energy storage tank assembly includes a main tank body and two heads; the two heads are fixedly connected to the two ends of the main tank body respectively; the exhaust hole is provided on the top of the main tank body; one of the heads is connected to the output end of the hydraulic pump on the side away from the main tank body; and the remaining head is connected to the input end of the pressure reducing shut-off valve on the side away from the main tank body.

[0010] In a possible implementation, a drain valve is provided at the bottom of the sealing head close to the pressure reducing stop valve.

[0011] In a possible implementation, the energy storage and pressure stabilization test device for the valve pressure test further includes a plurality of wheels; the plurality of wheels are arranged at intervals along the length direction of the energy storage tank assembly.

[0012] In a possible implementation, the pressure monitoring assembly also includes two union joints and two union nuts; the two union nuts are arranged at two ports at the top of the U-shaped tube; the two union joints are respectively arranged at one end of the corresponding union nut away from the U-shaped tube; and the two pressure gauges are detachably connected to the corresponding union joints.

[0013] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects:

[0014] The energy storage and pressure stabilization test device for the valve pressure test provided in the present application includes an energy storage tank assembly, a pressure reducing stop valve, a main pipeline, a secondary pipeline, a sealing assembly and a pressure monitoring assembly. In actual operation, the pressure reducing stop valve is first closed, and the hydraulic pump is started to transport the test medium into the energy storage tank assembly. In this process, the air in the tank needs to be discharged through the exhaust hole on the top of the energy storage tank assembly until the air is completely discharged, and then the sealing assembly is installed on the exhaust hole. Subsequently, the hydraulic pump continues to work, gradually pressurizing the energy storage tank assembly until the pressure in the tank is higher than the test pressure of the valve to be tested. At this time, the hydraulic pump stops working.

[0015] Next, open the pressure reducing stop valve to allow the test medium in the energy storage tank assembly to flow into the main pipeline. These test media will then flow into the secondary pipeline and the valve to be tested respectively. Among them, the test medium flowing into the secondary pipeline will further flow into the pressure monitoring component to detect the pressure changes in the pipeline in real time. Through the monitoring of the pressure monitoring component, the pressure can be smoothly increased to the test pressure, thereby completing the performance test of the valve to be tested.

[0016] Therefore, the energy storage and pressure stabilization test device for valve pressure test of the present application stores the energy of the hydraulic pump through the energy storage tank assembly, and uses the pressure reducing stop valve to control the release of energy. At the same time, combined with the real-time monitoring function of the pressure monitoring assembly, it can effectively guarantee the test safety and accuracy of products such as precision valves and ultra-low pressure valves. The design of the entire device is not only reasonable but also efficient, and can meet the pressure test requirements of various valve products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of the structure of an energy storage and pressure stabilization test device for a valve pressure test provided in an embodiment of the present application;

[0019] Figure 2 A pressure monitoring component is provided in an embodiment of the present application.

[0020] Icons: 1-energy storage tank assembly; 11-main tank; 12-end; 13-exhaust hole; 14-drain valve; 2-pressure reducing stop valve; 3-main pipeline; 4-auxiliary pipeline; 5-sealing assembly; 51-tank branch pipe; 52-first flange; 53-second flange; 54-sealing gasket; 55-plug; 6-pressure monitoring assembly; 61-U-tube; 62-pressure gauge; 63-slip nut; 64-slip joint; 7-wheel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0023] The present application embodiment provides a valve pressure test energy storage and pressure stabilization test device, such as Figure 1 to Figure 2As shown, the energy storage and pressure stabilization test device for the valve pressure test includes an energy storage tank assembly 1, a pressure reducing stop valve 2, a main pipeline 3, a secondary pipeline 4, a sealing assembly 5 and a pressure monitoring assembly 6. One end of the energy storage tank assembly 1 is connected to the output end of the hydraulic pump, and the other end thereof is connected to the input end of the pressure reducing stop valve 2. An exhaust hole 13 is provided on the top of the energy storage tank assembly 1. The sealing assembly 5 is provided at the exhaust hole 13 for blocking the exhaust hole 13. The output end of the pressure reducing stop valve 2 is connected to the input end of the main pipeline 3. The input end of the secondary pipeline 4 is connected to the second output end of the main pipeline 3. The output end of the secondary pipeline 4 is connected to the pressure monitoring assembly 6. Specifically, the pressure monitoring assembly 6 is used to monitor the pressure changes in the pipeline. The first output end of the main pipeline 3 is connected to the valve to be tested. In the present application, the secondary pipeline 4 is arranged in the middle of the main pipeline 3 and is connected to the main pipeline 3 to form a structure similar to a three-way valve, whose main function is to divert the test medium.

[0024] Furthermore, the first output end of the main pipeline 3 is connected to the valve to be tested through a hose, and similarly, the energy storage tank assembly 1 is also connected to the hydraulic pump through a hose. Such a design is not only convenient for connection, but also can reduce pressure loss to a certain extent.

[0025] It should be noted that in actual operation, the pressure reducing stop valve 2 is first closed, and the hydraulic pump is started to transport the test medium into the energy storage tank assembly 1. In this process, the air in the tank needs to be discharged through the exhaust hole 13 on the top of the energy storage tank assembly 1 until the air is completely discharged, and then the sealing assembly 5 is installed on the exhaust hole 13. Subsequently, the hydraulic pump continues to work, gradually pressurizing the energy storage tank assembly 1 until the pressure in the tank is higher than the test pressure of the valve to be tested. At this time, the hydraulic pump stops working.

[0026] Next, the pressure reducing stop valve 2 is opened to allow the test medium in the energy storage tank assembly 1 to flow into the main pipeline 3. These test media will then flow into the secondary pipeline 4 and the valve to be tested respectively. Among them, the test medium flowing into the secondary pipeline 4 will further flow into the pressure monitoring assembly 6 to detect the pressure change in the pipeline in real time. Through the monitoring of the pressure monitoring assembly 6, the pressure can be smoothly increased to the test pressure, thereby completing the performance test of the valve to be tested.

[0027] Therefore, the energy storage and pressure stabilization test device for the valve pressure test of the present application stores the energy of the hydraulic pump through the energy storage tank assembly 1, and controls the release of energy through the pressure reducing stop valve 2. At the same time, combined with the real-time monitoring function of the pressure monitoring assembly 6, it can effectively guarantee the test safety and accuracy of products such as precision valves and ultra-low pressure valves. The design of the entire device is not only reasonable but also efficient, and can meet the pressure test requirements of various valve products.

[0028] In the embodiment of the present application, the pressure monitoring assembly 6 includes a U-shaped tube 61 and two pressure gauges 62. The bottom of the U-shaped tube 61 is connected to the output end of the secondary pipeline 4. Both pressure gauges 62 are detachably connected to the two ports at the top of the U-shaped tube 61. Such a design is not only convenient for installation and disassembly, but also conducive to subsequent calibration and replacement work.

[0029] It should be noted that when the values ​​of the two pressure gauges 62 are inconsistent, it means that one of the pressure gauges 62 may be faulty. This design cleverly utilizes the principle of comparison between the two pressure gauges 62, allowing the staff to quickly find and locate the fault point, thereby avoiding misjudgment or test failure caused by the failure of the pressure gauge 62. This feature not only improves the accuracy and reliability of the test, but also effectively reduces the potential risks caused by equipment failure.

[0030] In the embodiment of the present application, the sealing assembly 5 includes a tank branch pipe 51, a first flange 52, a second flange 53, a sealing gasket 54 and a plug 55. The tank branch pipe 51 is arranged at the exhaust hole 13. The first flange 52 is connected to an end of the tank branch pipe 51 away from the exhaust hole 13. The second flange 53 is detachably connected to the first flange 52. The exhaust hole 13, the threaded hole of the first flange 52 and the threaded hole of the second flange 53 are in communication. The sealing gasket 54 is arranged between the first flange 52 and the second flange 53. The plug 55 is used to block the threaded hole of the second flange 53.

[0031] It should be noted that the second flange 53 is detachably connected to the first flange 52. This design brings many conveniences: when the gasket 54 is aged or damaged due to long-term use, the staff can easily remove the second flange 53 and then conveniently replace it with a new gasket 54. This feature not only significantly reduces the maintenance cost of the entire device, but also effectively shortens the time required for maintenance. In addition, the setting of the second flange 53 also has additional flexibility. It can be used as a reserved interface for other product tests, further improving the versatility and practicality of the energy storage tank assembly 1.

[0032] In the embodiment of the present application, the energy storage tank assembly 1 includes a main tank body 11 and two end caps 12. The two end caps 12 are fixedly connected to the two ends of the main tank body 11. An exhaust hole 13 is provided on the top of the main tank body 11. One side of the end caps 12 away from the main tank body 11 is connected to the output end of the hydraulic pump. The side of the remaining end cap 12 away from the main tank body 11 is connected to the input end of the pressure reducing stop valve 2. The main tank body 11 and the two end caps 12 are welded to form a closed energy storage tank container.

[0033] In the embodiment of the present application, a drain valve 14 is provided at the bottom of the end cap 12 near the pressure reducing stop valve 2. The drain valve 14 is used to effectively remove dirt from the inner cavity of the energy storage tank assembly 1 when cleaning the inner cavity.

[0034] In the embodiment of the present application, the energy storage and pressure stabilization test device for the valve pressure test further comprises a plurality of wheels 7. The plurality of wheels 7 are arranged at intervals along the length direction of the energy storage tank assembly 1.

[0035] It should be noted that the wheels 7 facilitate the movement of the entire device.

[0036] In the embodiment of the present application, the pressure monitoring assembly 6 further includes two union joints 64 and two union nuts 63. The two union nuts 63 are disposed at two ports at the top of the U-shaped tube 61. The two union joints 64 are respectively disposed at one end of the corresponding union nut 63 away from the U-shaped tube 61. The two pressure gauges 62 are detachably connected to the corresponding union joints 64.

[0037] Specifically, the two pressure gauges 62 are threadedly connected to the corresponding two flexible joints 64, which greatly facilitates the disassembly and replacement operations. The test medium is transported from the lower end of the U-shaped tube 61 to the two pressure gauges 62 at the upper end. By adopting the monitoring method of the dual pressure gauges 62, the safety and accuracy of the entire test process can be more effectively guaranteed.

[0038] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0039] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. An energy storage and pressure stabilization test device for valve pressure test, characterized in that: It comprises an energy storage tank assembly (1), a pressure reducing stop valve (2), a main pipeline (3), a secondary pipeline (4), a sealing assembly (5) and a pressure monitoring assembly (6); One end of the energy storage tank assembly (1) is connected to the output end of the hydraulic pump, and the other end is connected to the input end of the pressure reducing stop valve (2); a vent hole (13) is provided on the top of the energy storage tank assembly (1); The sealing component (5) is arranged at the exhaust hole (13) and is used to seal the exhaust hole (13); The output end of the pressure reducing stop valve (2) is connected to the input end of the main pipeline (3); The input end of the secondary pipeline (4) is connected to the second output end of the primary pipeline (3); The output end of the secondary pipeline (4) is connected to the pressure monitoring component (6); The first output end of the main pipeline (3) is connected to the valve to be tested.

2. The energy storage and voltage stabilization test device for valve pressure test according to claim 1 is characterized in that: The pressure monitoring assembly (6) comprises a U-shaped tube (61) and two pressure gauges (62); The bottom of the U-shaped tube (61) is connected to the output end of the secondary pipeline (4); The two pressure gauges (62) are both detachably connected to the two ports at the top of the U-shaped tube (61).

3. The energy storage and pressure stabilization test device for valve pressure test according to claim 1 is characterized in that: The sealing assembly (5) comprises a tank branch pipe (51), a first flange (52), a second flange (53), a sealing gasket (54) and a plug (55); The tank branch pipe (51) is arranged at the exhaust hole (13); The first flange (52) is connected to an end of the tank branch pipe (51) away from the exhaust hole (13); The second flange (53) is detachably connected to the first flange (52); The exhaust hole (13), the threaded hole of the first flange (52), and the threaded hole of the second flange (53) are in communication; The sealing gasket (54) is arranged between the first flange (52) and the second flange (53); The plug (55) is used to seal the threaded hole of the second flange (53).

4. The energy storage and voltage stabilization test device for valve pressure test according to claim 1, characterized in that: The energy storage tank assembly (1) comprises a main tank (11) and two sealing heads (12); The two sealing heads (12) are respectively fixedly connected to two ends of the main tank body (11); The top of the main tank body (11) is provided with the exhaust hole (13); A side of one of the sealing heads (12) away from the main tank body (11) is connected to an output end of a hydraulic pump; The side of the remaining sealing head (12) away from the main tank body (11) is connected to the input end of the pressure reducing stop valve (2).

5. The energy storage and voltage stabilization test device for valve pressure test according to claim 4 is characterized in that: A drain valve (14) is provided at the bottom of the sealing head (12) close to the pressure reducing stop valve (2).

6. The energy storage and voltage stabilization test device for valve pressure test according to claim 1, characterized in that: Also includes a plurality of wheels (7); The plurality of wheels (7) are arranged at intervals along the length direction of the energy storage tank assembly (1).

7. The energy storage and pressure stabilization test device for valve pressure test according to claim 2, characterized in that: The pressure monitoring assembly (6) further comprises two union joints (64) and two union nuts (63); The two union nuts (63) are arranged at two ends of the top of the U-shaped tube (61); The two movable joints (64) are respectively arranged at one end of the corresponding movable nut (63) away from the U-shaped tube (61); The two pressure gauges (62) are detachably connected to the corresponding flexible joints (64).

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