Pressure testing tool of valve pressure testing machine

Abstract

The utility model relates to the technical field of valve pressure testing, in particular to a pressure testing tool of a valve pressure testing machine, which comprises a pressing plate and a box body, and a supporting plate is mounted on the bottom wall in the box body; a blind plate is arranged at one end of the pressing plate, the blind plate and the pressing plate are connected through a compression spring, and the two ends of the spring are fixed to the blind plate and the pressing plate respectively. An air bag is arranged at the end of the blind plate close to the valve; the inner wall of the blind plate is in threaded connection with an L-shaped hook; the blind plate is provided with a bent pipe, the bent pipe is used for inputting air into the air bag and the valve, and the bent pipe is in an h shape. According to the pressure testing tool of the valve pressure testing machine, the air bag device is flexible and adjustable in inflation pressure, so that the pressure testing tool can more accurately adapt to the shapes and sizes of different valves. Compared with a traditional mechanical clamping mode, the air bag device can apply pressure more evenly, uneven force possibly generated when the air bag device makes contact with the valve is reduced, and therefore damage and scratches of the sealing face of the valve are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of valve pressure testing, in particular to a pressure testing tool for a valve pressure testing machine. Background Art

[0002] With the improvement of industrial safety standards, the safety requirements for pipeline systems are becoming more and more stringent. As an important component in the pipeline system, the sealing performance of the valve is directly related to the safety of the entire system. Therefore, ensuring that the sealing performance of the valve meets the standard has become a vital task. By using the pressure test tool, accurate and reliable pressure testing of the valve can be ensured, thereby reducing the safety hazards caused by poor valve sealing.

[0003] There is a common problem with traditional pressure test tools, which is that they are prone to damage to valves during the pressure test process. The most prominent problem is valve clamping. This phenomenon may be caused by unreasonable design of the pressure test tool or improper operation, resulting in damage to the valve sealing surface or internal structure, seriously affecting the pressure test effect and shortening the service life of the valve. This damage not only increases production costs, but may also lead to product quality problems and safety hazards.

[0004] In view of this, we propose a pressure testing tool for a valve pressure testing machine. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a pressure testing tool for a valve pressure testing machine, which solves the problems mentioned in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: a pressure testing tool for a valve pressure testing machine, comprising a box body and a pressure plate, a support plate is installed on the bottom wall of the box body; a blind plate is provided at one end of the pressure plate, and the blind plate and the pressure plate are connected by a compression spring; an airbag is provided at one end of the blind plate; an L-shaped hook is threadedly connected on the inner wall of the blind plate; an H-shaped elbow is provided on the blind plate, one end of the elbow is connected to the airbag, and the other end passes through the airbag.

[0009] Preferably, an operating handle is installed at one end of the pressing plate, and the operating handle is threadedly connected to the inner wall of the box.

[0010] Preferably, the airbag is T-shaped and is used for close contact with the inner wall of the valve body.

[0011] Preferably, the edge of the blind plate is provided with a raised slot, which forms a snap-fit ​​structure with the edge of the pressure plate to achieve a stable connection between the blind plate and the pressure plate.

[0012] Preferably, a first gasket is provided at the place where the L-shaped hook is connected to the valve body.

[0013] Preferably, the L-shaped hook is provided with a nut, and the nut is connected to the blind plate via a connecting spring.

[0014] Preferably, a second gasket is installed on the upper end of the support plate.

[0015] Preferably, an air pump is installed on the box body, and the air pump is connected to one end of the elbow through a pipeline.

[0016] (III) Beneficial effects

[0017] The utility model provides a pressure testing tool for a valve pressure testing machine, which has the following beneficial effects:

[0018] (1) The test tooling of the valve pressure tester, the softness of the airbag device and the adjustable inflation pressure enable it to more accurately adapt to the shapes and sizes of different valves. Compared with the traditional mechanical clamping method, the airbag device can apply pressure more evenly, reducing the uneven force that may be generated when contacting the valve, thereby avoiding damage and scratches on the valve sealing surface. This protective measure is crucial to improving the sealing performance and service life of the valve. It can effectively prevent damage to the valve during the pressure test and ensure its long-term stable operation.

[0019] (2) The pressure test tooling of the valve pressure tester reduces the additional pressure on the valve during the pressure test and reduces the degree of deformation of the valve, which is conducive to maintaining its original structural shape and sealing performance. By reducing the deformation of the valve, the service life of the valve is extended and its reliability after the pressure test is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a cross-sectional view of the overall structure of the utility model;

[0022] Figure 3 It is a three-dimensional diagram in the utility model;

[0023] Figure 4 It is a cross-sectional view of the blind plate in the utility model.

[0024] In the figure: 1. box body; 2. hose; 3. elbow; 4. fixing ring; 5. operating handle; 6. L-shaped hook; 7. nut; 8. connecting spring; 9. blind plate; 10. air bag; 11. first gasket; 12. pressure plate; 13. support plate; 14. second gasket; 15. valve body; 16. air pump. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 4 , the utility model provides a technical solution:

[0027] A pressure testing tool for a valve pressure testing machine includes a pressure plate 12 and a box 1. The box 1 is a rectangular parallelepiped structure, and its internal space is sufficient to accommodate various components required for the pressure test. A support plate 13 is installed on the bottom wall inside the box 1; a blind plate 9 is provided at one end of the pressure plate 12, and an operating handle 5 is installed at the other end. The blind plate 9 and the pressure plate 12 are connected by a compression spring, and the two ends of the spring are respectively fixed to the blind plate 9 and the pressure plate 12; an air bag 10 is provided at the end of the blind plate 9 close to the valve body 15; an L-shaped hook 6 is threadedly connected to the inner wall of the blind plate 9;

[0028] In this embodiment, the operating handle 5 is installed at one end of the pressure plate 12 and is provided with a thread, which can be connected with the thread on the box body 1. Such a design facilitates the operator to control and operate the pressure test tool. A fixing ring 4 is provided on the outer surface of the box body 1, which is threadedly connected with the operating handle 5 to ensure that the operating handle 5 is more stable when used.

[0029] Furthermore, the airbag 10 is T-shaped and installed at the end of the blind plate 9 close to the valve body 15. It is used to closely contact the inner wall of the valve body 15 to ensure that the gas is not easily leaked. The blind plate 9 is provided with an elbow 3, which is H-shaped and connected to the hose 2, so as to input gas into the valve body 15 and the airbag 10, thereby achieving close contact with the valve body 15 and pressure test operation.

[0030] In addition, a raised card slot is provided on the edge of the blind plate 9, which forms a snap-fit ​​structure with the edge of the pressure plate 12 to achieve a stable connection between the blind plate 9 and the pressure plate 12. A threaded hole is provided on the inner wall of the blind plate 9 for installing the L-shaped hook 6. In order to prevent friction and noise when the hook contacts the valve body 15, a first gasket 11 is provided at the hook connection to improve the stability and quietness of the pressure test operation. A connecting spring 8 is provided on the L-shaped hook 6 to alleviate the influence of external pressure on the pressure test tooling. A nut 7 is provided at the upper end of the connecting spring 8, and the tightness of the connecting spring 8 can be adjusted to meet the pressure test requirements under different pressure conditions.

[0031] In addition, a second gasket 14 is installed on the upper end of the support plate 13 to alleviate the impact that may occur when contacting the valve body 15 .

[0032] When the pressure test tool of the valve body 15 pressure test machine of the utility model is in use, the valve body 15 is placed on the support plate 13, and the blind plate 9 is gently pressed to the top of the valve body 15 by rotating the operating handle 5, and it is ensured that the blind plate 9 is aligned with the opening of the valve body 15. At this time, the compression spring between the blind plate 9 and the pressure plate 12 will provide a certain pressure to keep the blind plate 9 in contact with the valve body 15. The nut 7 of the L-shaped hook 6 is rotated to make the first gasket 11 on the L-shaped hook 6 contact with the valve body 15. The airbag 10 is connected to the pipeline on the valve body 15 and gas is input for inflation. The T-shaped design of the airbag 10 enables it to be in close contact with the inner wall of the valve body 15 to form a seal. When the airbag 10 is inflated and forms a tight seal with the valve body 15, the pressure test operation begins. The operator controls the air pump 16 to input pressure into the airbag 10 and the valve body 15 for pressure testing.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure testing tool for a valve pressure testing machine, comprising a box (1) and a pressure plate (12), characterized in that: A support plate (13) is installed on the bottom wall inside the box body (1); a blind plate (9) is provided at one end of the pressure plate (12), and the blind plate (9) and the pressure plate (12) are connected via a compression spring; an air bag (10) is provided at one end of the blind plate (9); an L-shaped hook (6) is threadedly connected to the inner wall of the blind plate (9); an H-shaped curved pipe (3) is provided on the blind plate (9), and one end of the curved pipe (3) is connected to the air bag (10), and the other end passes through the air bag (10).

2. The pressure testing tool of the valve pressure testing machine according to claim 1, characterized in that: An operating handle (5) is installed at one end of the pressing plate (12), and the operating handle (5) is threadedly connected to the inner wall of the box body (1).

3. The pressure testing tool of the valve pressure testing machine according to claim 1, characterized in that: The air bag (10) is T-shaped and is used to be in close contact with the inner wall of the valve body (15).

4. The pressure testing tool for the valve pressure testing machine according to claim 1, characterized in that: The edge of the blind plate (9) is provided with a raised slot, which forms a snap-fit ​​structure with the edge of the pressing plate (12) to achieve a stable connection between the blind plate (9) and the pressing plate (12).

5. The pressure testing tool for the valve pressure testing machine according to claim 1, characterized in that: A first gasket (11) is provided at the location where the L-shaped hook (6) is connected to the valve body (15).

6. The pressure testing tool for the valve pressure testing machine according to claim 1, characterized in that: The L-shaped hook (6) is provided with a nut (7), and the nut (7) is connected to the blind plate (9) via a connecting spring (8).

7. The pressure testing tool for the valve pressure testing machine according to claim 1, characterized in that: A second gasket (14) is installed on the upper end of the support plate (13).

8. The pressure testing tool for the valve pressure testing machine according to claim 1, characterized in that: An air pump (16) is installed on the box body (1), and the air pump (16) is connected to one end of the elbow (3) through a pipeline.

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