A high-efficiency and reliable safety valve air-tight leak detection clamp

Abstract

The utility model provides a safe valve airtight leak detection clamp of high efficiency and reliable relates to airtight detection technical field, including bottom plate, the top of bottom plate and near both ends all are installed wallboard, the top of wallboard is installed with base, the top of base and near the center place is installed with pneumatic cylinder, be equipped with the pressing plate between wallboard, the surface of pressing plate and near both ends all are penetrated and have slidingly connected with guide rod, the top of bottom plate and be all penetrated and fixed with seat bush below guide rod. In the utility model, through being equipped with spring seat bush with spring on the both sides of bottom plate, can make the positioning plate in the initial state under the spring force to be on the water surface of water tank, can be under the force action of pneumatic cylinder simultaneously, through the cooperation of pressing plate and safety valve and O ring in the positioning screw hole on the positioning plate, make safety valve can carry out airtight leak detection test with high efficiency and reliable, has the characteristics such as convenient to assemble and disassemble, reliable sealing, high production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, and in particular to a high-efficiency and reliable airtightness leak detection fixture for safety valves. Background Technology

[0002] The existing safety valves installed on vehicle natural gas pressure regulators are mostly tested for leaks by directly screwing the safety valve onto the air inlet connector and then immersing the safety valve in the water tank.

[0003] The existing method for airtight leak detection of safety valves, although it does not require a fixture, is not only inefficient in terms of production, but also labor-intensive for employees because the safety valve must be screwed to the air inlet connector during operation. Therefore, a highly efficient and reliable safety valve airtight leak detection fixture is needed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the existing technology that the safety valve must be screwed to the air inlet connector, which not only results in low production efficiency but also makes it difficult for employees to operate. Therefore, this invention proposes a highly efficient and reliable safety valve airtight leak detection fixture.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a high-efficiency and reliable safety valve airtight leak detection fixture, comprising a base plate, wall plates installed on the top and near both ends of the base plate, a base installed on the top of the wall plates, a cylinder installed on the top and near the center of the base, a pressure plate between the wall plates, guide rods slidably connected through the surface and near both ends of the pressure plate, a seat sleeve installed through and fixed on the top of the base plate and below the guide rods, a spring embedded inside the seat sleeve, a positioning plate fixedly connected to the top of the spring, the bottom of the guide rods penetrating the positioning plate, the springs and the seat sleeves and fixedly connected to the seat sleeves, a protrusion groove opened on the top and near the center of the pressure plate, the output end of the cylinder penetrating the base and embedded in the protrusion groove and fixedly connected, the top of the guide rod penetrating the base and fixedly installed thereto, an air inlet channel opened inside the positioning plate, and positioning holes equally spaced on the top of the positioning plate, the positioning holes communicating with the air inlet channel.

[0006] Preferably, a dead stop block is fixedly connected through and near the center of the bottom plate.

[0007] Preferably, an air intake screw hole is provided on one side wall of the positioning plate near one end, and the air intake screw hole is connected to one end of the air intake channel.

[0008] Preferably, a plug is embedded and fixed at one end of the air intake channel.

[0009] Preferably, the base plate has four first screw holes on its surface and near both ends.

[0010] Preferably, the top and bottom of the wall panel are provided with four second screw grooves.

[0011] Preferably, the base has symmetrically formed circular holes on its surface, the top of the guide rod passes through the circular holes, and a retaining sleeve is fitted and fixedly connected to the surface of the guide rod within the circular holes.

[0012] Preferably, each guide rod has a first threaded groove at its top, and a thick washer is provided at the top of the guide rod and at the first threaded groove.

[0013] Preferably, the base has four second screw holes on its surface and near both ends.

[0014] Preferably, the base has four third screw holes on its surface near the center.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] In this utility model, by installing spring seat sleeves with springs on both sides of the base plate, the positioning plate can be placed on the water surface of the water tank under the action of spring force in the initial state. At the same time, under the action of the cylinder, the safety valve can be efficiently and reliably tested for air tightness by cooperating with the pressure plate, the safety valve and the O-ring in the positioning screw hole installed on the positioning plate. It has the characteristics of convenient installation and removal, reliable sealing and high production efficiency. Attached Figure Description

[0017] Figure 1 This utility model proposes an overall structural plan view of a high-efficiency and reliable safety valve airtight leak detection fixture;

[0018] Figure 2 A top view of a partial structure of a high-efficiency and reliable airtight leak detection fixture for a safety valve is provided in this utility model.

[0019] Figure 3 This utility model proposes a plan view of the base plate structure of a high-efficiency and reliable safety valve airtight leak detection fixture;

[0020] Figure 4 A cross-sectional view of the base plate along direction B of the present invention provides a highly efficient and reliable airtight leak detection fixture for safety valves.

[0021] Figure 5 This utility model proposes a base plate structure diagram for a highly efficient and reliable safety valve airtight leak detection fixture.

[0022] Figure 6 This utility model provides a wall panel structure diagram for a highly efficient and reliable safety valve airtight leak detection fixture;

[0023] Figure 7 This utility model proposes a guide rod structure diagram for a highly efficient and reliable safety valve airtight leak detection fixture;

[0024] Figure 8 This utility model proposes a pressure plate structure diagram for a high-efficiency and reliable safety valve airtight leak detection fixture;

[0025] Figure 9 This utility model provides a base structure diagram for a highly efficient and reliable safety valve airtight leak detection fixture.

[0026] Legend: 1. Base plate; 2. Wall panel; 3. Guide rod; 4. Pressure plate; 5. Base; 6. Sleeve; 7. Cylinder; 8. Thick washer; 9. Positioning plate; 10. Dead stop block; 11. Spring; 12. Seat sleeve; 13. Air inlet screw hole; 14. Positioning hole; 15. Air inlet channel; 16. Plug; 17. First screw hole; 18. First screw groove; 19. Second screw groove; 20. Raised groove; 21. Round hole; 22. Second screw hole; 23. Third screw hole. Detailed Implementation

[0027] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0029] Example 1, such as Figure 1-9 As shown, this utility model provides a high-efficiency and reliable safety valve airtight leak detection fixture, including a base plate 1, wall plates 2 installed on the top of the base plate 1 and near both ends, a base 5 installed on the top of the wall plates 2, a cylinder 7 installed on the top of the base 5 and near the center, a pressure plate 4 between the wall plates 2, a guide rod 3 slidably connected through the surface of the pressure plate 4 and near both ends, a seat sleeve 12 slidably connected through the top of the base plate 1 and below the guide rod 3, a spring 11 embedded inside the seat sleeve 12, a positioning plate 9 fixedly connected to the top of the spring 11, the bottom of the guide rod 3 slid through the positioning plate 9, the spring 11 and the seat sleeve 12 and fixedly connected to the seat sleeve 12, a protrusion 20 opened on the top of the pressure plate 4 and near the center, the output end of the cylinder 7 slid through the base 5 and embedded in the protrusion 20 and fixedly connected, the top of the guide rod 3 slid through the base 5 and is fixedly installed thereto, an air inlet channel 15 opened inside the positioning plate 9, and positioning holes 14 equally spaced on the top of the positioning plate 9, the positioning holes 14 communicating with the air inlet channel 15.

[0030] The overall effect of Embodiment 1 is as follows: wall panels 2 are installed on the top of the base plate 1 and near both ends; a base 5 is installed on the top of the wall panels 2; a cylinder 7 is installed on the top of the base 5 and near the center; a pressure plate 4 is provided between the wall panels 2; guide rods 3 are slidably connected through the surface of the pressure plate 4 and near both ends; a seat sleeve 12 is slidably fixed through the top of the base plate 1 and below the guide rods 3; a spring 11 is embedded inside the seat sleeve 12; a positioning plate 9 is fixedly connected to the top of the spring 11; and the bottom of the guide rod 3 passes through the positioning plate 9, the spring 11, and the seat sleeve 12 and is fixedly connected to the seat sleeve 12. This allows the guide rod 3 to press against the pressure plate 4. The positioning plate 9 and spring 11 provide a limiting effect. A groove 20 is provided on the top of the pressure plate 4 near the center. The output end of the cylinder 7 passes through the base 5 and is embedded in the groove 20 for fixed connection. This allows the cylinder 7 to push the pressure plate 4 up and down. The top of the guide rod 3 passes through the base 5 and is fixed to it, which can position the top of the guide rod 3. An air inlet channel 15 is provided inside the positioning plate 9. Positioning holes 14 are provided at equal intervals on the top of the positioning plate 9. The positioning holes 14 are connected to the air inlet channel 15, which allows the gas to be discharged from the positioning holes 14 through the air inlet channel 15.

[0031] Example 2, as Figure 1-9 As shown, a dead stop block 10 is fixedly connected through and near the center of the top of the base plate 1; an air intake screw hole 13 is opened on one side wall of the positioning plate 9 near one end, and the air intake screw hole 13 is connected to one end of the air intake channel 15; a plug 16 is embedded and fixed at one end of the air intake channel 15; four first screw holes 17 are opened on the surface of the base plate 1 near both ends; four second screw grooves 19 are opened on the top and bottom of the wall plate 2; circular holes 21 are symmetrically opened on the surface of the base 5, the top of the guide rod 3 passes through the circular hole 21, and a retaining sleeve 6 is sleeved and fixedly connected on the surface of the guide rod 3 and inside the circular hole 21; a first screw groove 18 is opened on the top of the guide rod 3, and a thick washer 8 is provided on the top of the guide rod 3 and at the first screw groove 18; four second screw holes 22 are opened on the surface of the base 5 near both ends; and four third screw holes 23 are opened on the surface of the base 5 near the center.

[0032] The overall effect of Embodiment 2 is as follows: a dead stop 10 is fixedly connected through the top of the base plate 1 near the center, which can limit the positioning plate 9; an air inlet screw hole 13 is opened on one side wall of the positioning plate 9 near one end, and the air inlet screw hole 13 is connected to one end of the air inlet channel 15, which can allow the air inlet connector to enter the air inlet screw hole 13 and the air entering can pass through the air inlet channel 15; a plug 16 is embedded and fixed at one end of the air inlet channel 15, which can prevent the air from escaping from one end of the air inlet channel 15; four first screw holes 17 are opened on the surface of the base plate 1 near both ends, which can install and fix the wall panel 2 on the surface of the base plate 1; four second screw grooves 19 are opened on the top and bottom of the wall panel 2, which can install the wall panel 2. The effect on the top of the base plate 1 and the bottom of the base 5: Symmetrical circular holes 21 are provided on the surface of the base 5, through which the top of the guide rod 3 passes. A retaining sleeve 6 is fitted and fixedly connected to the surface of the guide rod 3 within the circular holes 21, which can make the guide rod 3 more stable; a first screw groove 18 is provided on the top of the guide rod 3, and a thick washer 8 is provided on the top of the guide rod 3 at the first screw groove 18, which can be used to install and fix the guide rod 3 by passing the thick washer 8 through the screw and embedding it into the first screw groove 18; four second screw holes 22 are provided on the surface of the base 5 near both ends, which can be used to install and fix the cylinder 7 on the top of the base 5; four third screw holes 23 are provided on the surface of the base 5 near the center, which can be used to install and fix the base 5 on the top of the wall panel 2.

[0033] Working Principle: In use, the device is placed at the bottom of the water tank. At this point, cylinder 7 is in its initial state, and positioning plate 9 is on the water surface under the force of spring 11. First, place the safety valves one by one into the positioning holes 14 on positioning plate 9. Then, activate the cylinder 7 descent switch. The piston rod of cylinder 7 drives the pressure plate 4 downward to press the safety valves, and pushes positioning plate 9 towards the upper plane of dead stop block 10 for axial positioning. Activate the air intake solenoid valve switch. Operating gas enters the safety valve cavity through the air intake screw hole 13 on positioning plate 9, allowing for airtightness testing of the safety valves. After the airtightness test is completed, activate the cylinder 7 ascent switch. The piston rod of cylinder 7 drives the pressure plate 4 upward to return to its initial state. Positioning plate 9 returns to the water surface under the force of spring 11.

[0034] The wiring diagram of cylinder 7 in this utility model is common knowledge in the field, and its working principle is a well-known technology. The appropriate model is selected according to actual use. Therefore, the control method and wiring layout of cylinder 7 will not be explained in detail.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A high-efficiency and reliable safety valve airtight leak detection fixture, comprising a base plate (1), characterized in that: Wall panels (2) are installed on the top of the base plate (1) and near both ends. A base (5) is installed on the top of the wall panel (2). A cylinder (7) is installed on the top of the base (5) and near the center. A pressure plate (4) is provided between the wall panels (2). A guide rod (3) is slidably connected through the surface of the pressure plate (4) and near both ends. A seat sleeve (12) is slidably fixed through the top of the base plate (1) and below the guide rod (3). A spring (11) is embedded inside the seat sleeve (12). A positioning plate (9) is fixedly connected to the top of the spring (11). The bottom of the guide rod (3) passes through the positioning plate (9), spring (11) and seat (12) and is fixedly connected to the seat (12). The top of the pressure plate (4) and near the center is provided with a groove (20). The output end of the cylinder (7) passes through the base (5) and is fixedly connected in the groove (20). The top of the guide rod (3) passes through the base (5) and is installed and fixed thereto. An air intake channel (15) is provided inside the positioning plate (9). Positioning holes (14) are provided at equal intervals on the top of the positioning plate (9). The positioning holes (14) are connected to the air intake channel (15).

2. The high-efficiency and reliable safety valve airtight leak detection fixture according to claim 1, characterized in that: A dead stop (10) is fixedly connected through and near the center of the bottom plate (1).

3. The high-efficiency and reliable safety valve airtight leak detection fixture according to claim 1, characterized in that: An air intake screw hole (13) is provided on one side wall of the positioning plate (9) and near one end. The air intake screw hole (13) is connected to one end of the air intake channel (15).

4. The high-efficiency and reliable safety valve airtight leak detection fixture according to claim 1, characterized in that: One end of the air intake channel (15) is fitted with and fixed with a plug (16).

5. The high-efficiency and reliable safety valve airtight leak detection fixture according to claim 1, characterized in that: The base plate (1) has four first screw holes (17) on its surface and near both ends.

6. The high-efficiency and reliable safety valve airtight leak detection fixture according to claim 1, characterized in that: The top and bottom of the wall panel (2) are provided with four second screw grooves (19).

7. The high-efficiency and reliable safety valve airtight leak detection fixture according to claim 1, characterized in that: The base (5) has symmetrically opened circular holes (21) on its surface. The top of the guide rod (3) passes through the circular holes (21). A retainer (6) is fitted and fixedly connected to the surface of the guide rod (3) and located inside the circular holes (21).

8. The high-efficiency and reliable safety valve airtight leak detection fixture according to claim 1, characterized in that: The top of each guide rod (3) is provided with a first threaded groove (18), and a thick washer (8) is provided at the top of the guide rod (3) and at the first threaded groove (18).

9. The high-efficiency and reliable safety valve airtight leak detection fixture according to claim 1, characterized in that: The base (5) has four second screw holes (22) on its surface and near both ends.

10. A high-efficiency and reliable safety valve airtight leak detection fixture according to claim 1, characterized in that: The base (5) has four third screw holes (23) on its surface and near the center.

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