Movable pressure maintaining test tool

Abstract

The utility model relates to the technical field of pressure maintaining testing, and discloses a movable pressure maintaining testing tool which comprises a shell, testing equipment is fixedly installed on the inner bottom wall of the shell, a small gas booster pump is fixedly connected to the right side of the shell, and the upper end and the lower end of the front side of the small gas booster pump are communicated with connecting pipes. The left end of the connecting pipe is communicated with the right side of the testing equipment, a digital display pressure sensor is fixedly installed on the left side of the top wall of the testing equipment, a plurality of connecting joints are fixedly installed at the rear end of the right side of the top wall of the testing equipment, and two pressure reducing valves are fixedly installed on the front side of the top wall of the testing equipment. According to the utility model, high-pressure gas is provided through the small-sized gas booster pump to meet the pressure requirement of a pressure maintaining test, meanwhile, under the installation of the connecting joint and the quick joint, the universality of the tool is enhanced, the tool can adapt to tested systems of different specifications and types, and the situation that the application range is reduced is avoided.

Description

Technical Field

[0001] This utility model relates to the field of pressure holding test technology, and in particular to a mobile pressure holding test fixture. Background Technology

[0002] In the research, development, production and maintenance of gas systems, pressure holding test is a crucial step in ensuring system performance and safety. Traditional pressure holding test fixtures are often bulky, complex to operate and lack versatility, making it difficult to meet the requirements of modern industry for testing efficiency and accuracy. Therefore, developing a portable, efficient and universal pressure holding test fixture is of great significance.

[0003] A search revealed Chinese Patent Publication No. CN209446620U, which discloses a high-precision pressure-holding pneumatic testing fixture, including an electrical protection box, a probe fixing plate, and a cylinder bracket. The electrical protection box contains a product positioning plate. This utility model features a reasonable structural design, convenient and quick operation, and high practicality. During operation, a control switch button activates the cylinder, which, via a push rod, moves the probe protection plate and probe fixing plate up and down along the upper and lower mold guide pillars. The probe plate performs the testing operation. Under the action of the upper and lower mold guide pillars, the probe plate stroke is stable and accurate, improving the working efficiency and accuracy of the probe. The device has a simple and clear structure. The rational planning of the electrical protection box effectively improves the space utilization of the box, reducing its volume. The handle facilitates carrying and transport. The pressure-holding performance is enhanced by the pressure regulating valve and solenoid valve, resulting in good pressure-holding performance and convenient pressure adjustment. However, in practical use, this device lacks multiple functional components, reducing testing efficiency and accuracy. It cannot well adapt to different specifications and types of tested systems, thus limiting its applicability. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a mobile pressure holding test fixture, which aims to improve the problem that the existing device does not have multiple functional components, thus reducing the test efficiency and accuracy.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a mobile pressure holding test fixture, comprising a housing, a test device fixedly installed on the inner bottom wall of the housing, a small gas booster pump fixedly connected to the right side of the housing, connecting pipes connected to the upper and lower ends of the front side of the small gas booster pump, the left end of the connecting pipes connected to the right side of the test device, a digital display pressure sensor fixedly installed on the left side of the top wall of the test device, multiple connecting joints fixedly installed at the rear end of the right side of the top wall of the test device, two pressure reducing valves fixedly installed on the front side of the top wall of the test device, two quick connectors fixedly installed in the middle of the top of the test device, an exhaust valve fixedly installed on the left side of the test device, a pressure measuring chamber slidably installed on the front side of the housing, connecting seats fixedly connected to the four corners of the bottom wall of the housing, rollers rotatably connected to one side of the connecting seats, and a locking mechanism provided on the top wall of the housing.

[0006] The above technical solution enables the pressure requirements of the pressure holding test to be met under the start of high-pressure gas, and allows the pressure value of the tested system to be displayed under the monitoring of the digital pressure sensor. This improves the testing efficiency and accuracy. At the same time, the installation of connecting joints and quick couplings enhances the versatility of the tooling, making it adaptable to different specifications and types of tested systems and avoiding the situation of reduced applicability.

[0007] As a further description of the above technical solution:

[0008] The locking mechanism includes a protective cover, the bottom of which is rotatably connected to the top of the outer shell. Limiting shells are fixedly connected to the left and right ends of the rear side of the inner wall of the protective cover. A threaded rod is rotatably connected to one side of the inner wall of the limiting shell. A knob is fixedly connected to one end of the threaded rod. A locking plate is threadedly connected to the outer wall of the threaded rod. Locking grooves are provided on the left and right sides of the inner wall of the outer shell. One side of the locking plate engages with the corresponding locking groove.

[0009] The above technical solution achieves the purpose of protecting the test equipment by rotating the protective cover. At the same time, the rotation of the threaded rod causes the locking plate to move under the restriction of the limiting shell, thereby locking the protective cover by engaging it with the locking groove, thus improving the safety of the equipment.

[0010] As a further description of the above technical solution:

[0011] The locking mechanism also includes multiple rubber strips, one side of which is fixedly connected to the outer wall of the corresponding knob.

[0012] The above technical solution improves the anti-slip effect of the knob by connecting multiple rubber strips.

[0013] As a further description of the above technical solution:

[0014] A control switch is fixedly connected to the front right end of the housing, and the control switch is electrically connected to the testing equipment and the small gas booster pump respectively.

[0015] The above technical solution enables the individual opening and closing of the testing equipment and the small gas booster pump by connecting the control switch.

[0016] As a further description of the above technical solution:

[0017] A sealing ring is fixedly connected to the right end of the outer wall of the exhaust valve, and positioning pins are fixedly connected to the left and right ends of the front side of the protective cover. Positioning grooves are opened on the left and right front ends of the top wall of the outer shell, and the front end of the positioning pin engages with the positioning groove.

[0018] The above technical solution improves the positioning effect when the protective cover and the outer shell are closed by connecting the positioning post and the positioning groove.

[0019] As a further description of the above technical solution:

[0020] A push rod is fixedly connected to the rear side of the outer casing, and a rubber sleeve is fixedly connected to the middle of the push rod. The left and right ends of the rear side of the protective cover are provided with engagement grooves, and the front side of the push rod engages with the engagement grooves.

[0021] The above technical solution avoids wear on the protective cover and the push rod by engaging the locking groove and the push rod.

[0022] As a further description of the above technical solution:

[0023] A handle is fixedly connected to the front side of the pressure testing chamber, and a protective sleeve is fixedly connected to the middle of the handle.

[0024] The above technical solution improves the lifespan of the handle by connecting it to the protective cover.

[0025] As a further description of the above technical solution:

[0026] A protective shell is fixedly connected to the right side of the outer shell, and the outer side of the protective shell has a smooth design.

[0027] The above technical solution enables the external protection of the small gas booster pump through the connection of the protective shell.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, a small gas booster pump provides high-pressure gas to meet the pressure requirements of the pressure holding test. The data is then monitored and displayed in real time by a digital pressure sensor, which improves the testing efficiency and accuracy. At the same time, the installation of connecting joints and quick couplings enhances the versatility of the tooling, enabling it to adapt to different specifications and types of tested systems and avoiding a reduction in the scope of application.

[0030] 2. In this utility model, by flipping the protective cover, the top of the outer shell is closed, thereby protecting the testing equipment. At the same time, by rotating the knob, the threaded rod drives the locking plate to complete the displacement under the restriction of the limiting shell, and then the locking plate engages with the locking groove inside the outer shell, thereby locking the protective cover and improving the safety of the equipment. Attached Figure Description

[0031] Figure 1 This is a perspective view of a mobile pressure holding test fixture proposed in this utility model;

[0032] Figure 2 This is a top view of a mobile pressure holding test fixture proposed in this utility model;

[0033] Figure 3 This is a schematic diagram of the structure of the protective cover of a mobile pressure holding test fixture proposed in this utility model;

[0034] Figure 4 This is a schematic diagram of the internal structure of the outer shell of a mobile pressure holding test fixture proposed in this utility model;

[0035] Figure 5 This is a schematic diagram of the locking mechanism of a movable pressure holding test fixture proposed in this utility model.

[0036] Legend:

[0037] 1. Outer shell; 2. Locking mechanism; 201. Protective cover; 202. Limiting shell; 203. Threaded rod; 204. Knob; 205. Locking plate; 206. Locking groove; 207. Rubber strip; 3. Testing equipment; 4. Small gas booster pump; 5. Connecting pipe; 6. Digital display pressure sensor; 7. Connecting joint; 8. Pressure reducing valve; 9. Exhaust valve; 10. Sealing ring; 11. Push rod; 12. Rubber sleeve; 13. Engaging groove; 14. Pressure measuring chamber; 15. Handle; 16. Protective sleeve; 17. Quick connector; 18. Positioning post; 19. Positioning groove; 20. Protective shell; 21. Connecting seat; 22. Roller; 23. Control switch. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 2 and Figure 4 This utility model provides an embodiment of a mobile pressure holding test fixture, comprising a housing 1, a test device 3 fixedly installed on the inner bottom wall of the housing 1, a small gas booster pump 4 fixedly connected to the right side of the housing 1, which provides high gas pressure inside the device, the small gas booster pump 4 having connecting pipes 5 connected to the upper and lower ends of the front side of the small gas booster pump 4, the left end of the connecting pipe 5 being connected to the right side of the test device 3, a digital display pressure sensor 6 fixedly installed on the left side of the top wall of the test device 3, which monitors changes in gas pressure, and multiple connecting joints 7 fixedly installed at the rear end of the right side of the top wall of the test device 3. Two pressure reducing valves 8 are fixedly installed on the front side of the top wall of the test equipment 3. Two quick connectors 17 are fixedly installed on the top center of the test equipment 3. The connection between the connectors 7 and the quick connectors 17 improves the versatility of the tooling and can adapt to different specifications and types of tested systems. An exhaust valve 9 is fixedly installed on the left side of the test equipment 3. The air pressure is balanced by the exhaust valve 9 and the pressure reducing valves 8. A pressure measuring chamber 14 is slidably installed on the front side of the outer shell 1. Connecting seats 21 are fixedly connected to the four corners of the bottom wall of the outer shell 1. Rollers 22 are rotatably connected to one side of the connecting seats 21. The movement of the equipment is accomplished by the rollers 22. A locking mechanism 2 is provided on the top wall of the outer shell 1.

[0040] Specifically, a small gas booster pump 4 is used to provide the required high-pressure gas, which is then transported into the internal space of the test equipment 3 through the connecting pipe 5. This ensures that the test equipment 3 can meet the strict pressure requirements during the pressure holding test. During the test, the digital display pressure sensor 6 is responsible for monitoring and recording the pressure value in the system under test in real time, thereby improving the efficiency and accuracy of the test. In addition, the installation of the connecting connector 7 and quick connector 17 enhances the versatility of the tooling, enabling it to adapt to various specifications and types of systems under test, effectively avoiding the limitations of the test caused by the limited scope of application. In the final stage of the test, the installation of the exhaust valve 9 and the pressure reducing valve 8 ensures the smooth release and balance of the air pressure, thereby achieving a smooth and safe test process. Finally, an integrated test effect is formed, providing an efficient, accurate and flexible test solution.

[0041] Reference Figure 1 , Figure 3 and Figure 5 The locking mechanism 2 includes a protective cover 201, the bottom of which is rotatably connected to the top of the outer shell 1. By rotating the protective cover 201, it can protect the top of the test equipment 3. The left and right ends of the rear side of the inner wall of the protective cover 201 are fixedly connected to a limiting shell 202. A threaded rod 203 is rotatably connected to one side of the inner wall of the limiting shell 202. A knob 204 is fixedly connected to one end of the threaded rod 203, so that when the knob 204 is rotated, the threaded rod 203 rotates synchronously, thereby driving the locking plate 205 to complete the displacement. The outer wall of the threaded rod 203 is threadedly connected to the locking plate 205. Locking grooves 206 are opened on the left and right sides of the inner wall of the outer shell 1. One side of the locking plate 205 engages with the corresponding locking groove 206, thereby locking the protective cover 201 by engaging the locking plate 205 with the locking groove 206.

[0042] Specifically, by flipping the protective cover 201, the top of the outer shell 1 is closed, thereby protecting the top of the testing equipment 3. By rotating the knob 204, the threaded rod 203 can be driven to rotate, thereby driving the locking plate 205 accordingly. At the same time, under the restriction of the limiting shell 202, the locking plate 205 can complete the displacement and finally engage with the locking groove 206 inside the outer shell 1. The outer shell 1 successfully locks the protective cover 201, improving the safety of the equipment, extending the service life of the device, and ensuring the long-term stable operation of the equipment.

[0043] Reference Figure 1 , Figure 4 and Figure 5 The locking mechanism 2 also includes multiple rubber strips 207, one side of which is fixedly connected to the outer wall of the corresponding knob 204; a control switch 23 is fixedly connected to the front right end of the housing 1, and the control switch 23 is electrically connected to the test equipment 3 and the small gas booster pump 4 respectively; a handle 15 is fixedly connected to the front of the pressure measuring chamber 14, and a protective sleeve 16 is fixedly connected to the middle of the handle 15;

[0044] Specifically, the anti-slip effect of the knob 204 is improved by connecting multiple rubber strips 207. The control switch 23, which is electrically connected to the test equipment 3 and the small gas booster pump 4 respectively, enables the control switch 23 to turn the equipment on and off. The handle 15 is protected by the connection between the handle 15 and the protective cover 16.

[0045] Reference Figure 2 , Figure 3 and Figure 4A sealing ring 10 is fixedly connected to the right end of the outer wall of the exhaust valve 9. Positioning pins 18 are fixedly connected to the left and right ends of the front side of the protective cover 201. Positioning grooves 19 are opened on the front ends of the left and right sides of the top wall of the outer shell 1. The front ends of the positioning pins 18 are engaged with the positioning grooves 19. A push rod 11 is fixedly connected to the rear side of the outer shell 1. A rubber sleeve 12 is fixedly connected to the middle of the push rod 11. Engaging grooves 13 are opened on the left and right ends of the rear side of the protective cover 201. The front side of the push rod 11 is engaged with the engaging grooves 13. A protective shell 20 is fixedly connected to the right side of the outer shell 1. The outer side of the protective shell 20 is designed to be smooth.

[0046] Specifically, the sealing ring 10 improves the sealing performance between the exhaust valve 9 and the outer casing 1, the engagement of the positioning pin 18 and the positioning groove 19 improves the positioning effect of the protective cover 201 during use, the engagement of the push rod 11 and the engaging groove 13 reduces the wear of the protective cover 201 when it is opened, and the protective shell 20 completes the external protection of the small gas booster pump 4.

[0047] Working Principle: Upon initial use, a small gas booster pump 4 provides high-pressure gas, which is then delivered into the testing equipment 3 via connecting pipe 5 to meet the pressure requirements of the pressure holding test. Data is then monitored by a digital pressure sensor 6, displaying the pressure value within the tested system, thus improving testing efficiency and accuracy. Simultaneously, the installation of connecting connector 7 and quick connector 17 enhances the versatility of the tooling, enabling it to adapt to different specifications and types of tested systems, avoiding a reduction in its applicability. Finally, the installation of exhaust valve 9 and pressure reducing valve 8 completes the gas regulation process. The release and balancing of pressure ultimately form an integrated testing effect. By flipping the protective cover 201, the top of the outer shell 1 is closed, thus protecting the top of the testing equipment 3. Rotating the knob 204 causes the threaded rod 203 to rotate, thereby driving the locking plate 205. Simultaneously, under the restriction of the rotation by the limiting shell 202, the locking plate 205 completes displacement, and the locking plate 205 engages with the locking groove 206 inside the outer shell 1, achieving the locking of the protective cover 201 by the outer shell 1, thereby improving the safety of the equipment. Conversely, opening the device is completed, thus improving its service life.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mobile pressure holding test fixture, comprising a housing (1), characterized in that: The inner bottom wall of the outer shell (1) is fixedly installed with a test device (3). A small gas booster pump (4) is fixedly connected to the right side of the outer shell (1). The upper and lower ends of the front side of the small gas booster pump (4) are connected to a connecting pipe (5). The left end of the connecting pipe (5) is connected to the right side of the test device (3). A digital display pressure sensor (6) is fixedly installed on the left side of the top wall of the test device (3). Multiple connecting joints (7) are fixedly installed on the rear end of the right side of the top wall of the test device (3). Two pressure reducing valves (8) are fixedly installed on the front side of the top wall of the test device (3). Two quick connectors (17) are fixedly installed in the middle of the top of the test device (3). An exhaust valve (9) is fixedly installed on the left side of the test device (3). A pressure measuring chamber (14) is slidably installed on the front side of the outer shell (1). Connecting seats (21) are fixedly connected at the four corners of the bottom wall of the outer shell (1). A roller (22) is rotatably connected to one side of the connecting seat (21). A locking mechanism (2) is provided on the top wall of the outer shell (1).

2. The mobile pressure holding test fixture according to claim 1, characterized in that: The locking mechanism (2) includes a protective cover (201), the bottom of which is rotatably connected to the top of the outer shell (1). The left and right ends of the inner wall of the protective cover (201) are fixedly connected to a limiting shell (202). A threaded rod (203) is rotatably connected to one side of the inner wall of the limiting shell (202). A knob (204) is fixedly connected to one end of the threaded rod (203). A locking plate (205) is threadedly connected to the outer wall of the threaded rod (203). Locking grooves (206) are provided on the left and right sides of the inner wall of the outer shell (1). One side of the locking plate (205) engages with the corresponding locking groove (206).

3. The mobile pressure holding test fixture according to claim 2, characterized in that: The locking mechanism (2) also includes a plurality of rubber strips (207), one side of which is fixedly connected to the outer wall of the corresponding knob (204).

4. The mobile pressure holding test fixture according to claim 1, characterized in that: A control switch (23) is fixedly connected to the front right end of the outer casing (1). The control switch (23) is electrically connected to the test equipment (3) and the small gas booster pump (4).

5. A mobile pressure holding test fixture according to claim 2, characterized in that: A sealing ring (10) is fixedly connected to the right end of the outer wall of the exhaust valve (9). A positioning post (18) is fixedly connected to the left and right ends of the front side of the protective cover (201). A positioning groove (19) is opened on the left and right front ends of the top wall of the outer shell (1). The front end of the positioning post (18) engages with the positioning groove (19).

6. The mobile pressure holding test fixture according to claim 2, characterized in that: A push rod (11) is fixedly connected to the rear side of the outer shell (1), and a rubber sleeve (12) is fixedly connected to the middle part of the push rod (11). The left and right ends of the rear side of the protective cover (201) are provided with locking grooves (13), and the front side of the push rod (11) engages with the locking grooves (13).

7. The mobile pressure holding test fixture according to claim 1, characterized in that: A handle (15) is fixedly connected to the front side of the pressure chamber (14), and a protective sleeve (16) is fixedly connected to the middle of the handle (15).

8. The mobile pressure holding test fixture according to claim 1, characterized in that: A protective shell (20) is fixedly connected to the right side of the outer shell (1), and the outer side of the protective shell (20) is designed to be smooth.

Images