Relief valve body crushing test bench

Abstract

The utility model discloses a kind of relieving valve body pressure test bench, it is related to the technical field of relieving valve detection, the utility model aims to solve the problem of designing a special device to meet 120 relieving valve body pressure test, the utility model includes bottom plate, two mutually parallel setting vertical plate are connected on the bottom plate, two The vertical plate between connection has mounting seat, valve body is installed on the mounting seat, the upper surface and lower surface of the valve body are respectively provided with the upper cover and lower cover matched with the valve body, the upper cover and the lower cover are tightly buckled on the valve body by clamp, to be used for the valve port of the valve body, the valve body is also communicated with pressure device.

Description

Technical Field

[0001] This utility model relates to the technical field of relief valve testing, specifically to a pressure testing bench. Background Technology

[0002] The release valve used in railway systems is a core component of the braking control system, primarily used to manually release the brakes applied to locomotives or rolling stock. Its core principle is based on releasing the compressed air pressure within the brake cylinder.

[0003] Before leaving the factory, the relief valve body needs to undergo a pressure test. However, there is currently a lack of dedicated testing equipment for the pressure test of the 120 relief valve body. Therefore, it is urgent to design a pressure test device that can be applied to the 120 relief valve body to meet the pressure test requirements. Utility Model Content

[0004] To address the aforementioned problem—namely, the need to design a dedicated device for the 120-level valve body pressure test—this invention proposes a valve body pressure test bench. The bench includes a frame, on which a pressure-testing fixture is mounted. The fixture includes a base plate, on which two parallel vertical plates are connected. A mounting base connects the two vertical plates, and a valve body is mounted on the mounting base. An upper cover and a lower cover, adapted to the valve body, are respectively mounted on the upper and lower surfaces of the valve body. The upper and lower covers are clamped onto the valve body to seal the valve port. A pressure-testing device is also connected to the valve body.

[0005] A further feature of this invention is that a sealing gasket adapted to the valve port of the valve body is provided on the side surface of the lower cover, the upper cover, and the lower cover near the valve body.

[0006] A further feature of this invention is that the clamp is U-shaped, and the bottom end of the clamp is threaded with a set screw, which abuts against the lower cover.

[0007] A further feature of this invention is that a top rod is threadedly connected to the upper cover, and the top rod abuts against the equalizing valve inside the valve body.

[0008] A further feature of this invention is that the top end of the clamp has an avoidance notch corresponding to the top rod.

[0009] A further feature of this invention is that the valve body is connected to the mounting base by a double-ended bolt.

[0010] The beneficial effects of this utility model are as follows:

[0011] The clamps, together with the upper and lower covers, can fix and seal the valve body. Then, the valve body is pressurized using a pressure testing device to create a high-pressure environment inside. Furthermore, foam water is applied to the area of ​​the valve body to be tested, and the airtightness of the valve body can be observed based on the foam water. This further achieves the purpose of pressure testing the 120 relief valve body, and makes disassembly and installation simpler and more convenient. Attached Figure Description

[0012] Figure 1 A schematic diagram of the structure of this utility model is shown.

[0013] Figure 2 A schematic diagram of the pressure testing fixture is shown. Figure 1 .

[0014] Figure 3 A schematic diagram of the pressure testing fixture is shown. Figure 2 .

[0015] Figure 4 The explosion of the pressure-pressurizing tool was shown. Figure 1 .

[0016] Figure 5 The explosion of the pressure-pressurizing tool was shown. Figure 2 .

[0017] Figure 6 The explosion of the pressure-pressurizing tool was shown. Figure 3 .

[0018] Reference numerals: 1. Stand; 2. Pressurizing fixture; 21. Base plate; 22. Vertical plate; 23. Mounting base; 231. Double-ended bolt; 24. Top cover; 241. Top rod; 25. Bottom cover; 26. Clamp; 261. Top screw; 262. Circumvention notch; 3. Valve body; 4. Sealing gasket. Detailed Implementation

[0019] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] refer to Figure 1 This utility model proposes a valve body pressure relief test bench, which includes a frame 1, a rectangular frame, a platform mounted on the top of the rectangular frame, and a pressure relief fixture 2 connected to the platform by bolts.

[0021] refer to Figure 2The pressing fixture 2 includes a base plate 21, which is bolted to the platform. Two parallel vertical plates 22 are bolted to the base plate 21. A mounting seat 23 is provided between the two vertical plates 22. The two sides of the mounting seat 23 closest to the two vertical plates 22 are bolted to the vertical plates 22, and the mounting seat 23 is perpendicular to the vertical plates 22.

[0022] The valve body 3 is connected to the mounting body 231 by double-ended bolts 231. The two connecting through holes on the valve body 3 are respectively provided with double-ended bolts 231. The end of the double-ended bolt 231 near the mounting base 23 is threaded to the mounting base 23, and the other end of the double-ended bolt 231 is threaded to the nut, so as to install the valve body 3 onto the mounting base 23.

[0023] An upper cover 24 and a lower cover 25 are respectively provided on the upper and lower surfaces of the valve body 3, and the upper cover 24 and the lower cover 25 are adapted to fit the upper and lower surfaces of the valve body 3, respectively. The upper cover 24 and the lower cover 25 are clamped to the valve body 3 by clamps 26 to block the valve ports at both ends of the valve body 3. A pressure-pressurizing device is also connected to the valve body 3 for pressurizing the valve body 3.

[0024] refer to Figure 4 , 5 6. A circular sealing gasket 4 that matches the valve port of the valve body 3 is fixedly connected to the surface of the upper cover 24 and the lower cover 25 near the valve body 3. The diameter of the sealing gasket 4 is the same as the inner diameter of the corresponding valve port. Therefore, when the upper cover 24 and the lower cover 25 are fastened to the valve body, the sealing gasket 4 can block the valve port to ensure the sealing of the valve body.

[0025] refer to Figure 3 The clamp 26 is U-shaped and is located on the side of the valve body 3 away from the mounting seat. The bottom end of the clamp 26 is threaded with two set screws 261. The end of the set screw 261 near the valve body 3 abuts against the lower cover 25, and the top of the clamp 26 abuts against the upper cover 24. Further tightening the set screws 261 can enable the clamp 26 to clamp the upper cover 24 and the lower cover 25.

[0026] A push rod 241 is threaded onto the upper cover 24. The bottom end of the push rod 241 extends into the valve body 3, and one end of the push rod 241 that extends into the valve body 3 abuts against the axis of the equalizing valve inside the valve body.

[0027] The top of the clamp 26 has an avoidance notch 262 corresponding to the push rod 241 to avoid interference with the push rod 241.

[0028] The testing process begins with installing the valve body 3 onto the valve seat, followed by sealing the valve body 3 using clamps 26, the upper cover 24, and the lower cover 25.

[0029] Secondly, high-pressure gas is injected into the valve body 3 using a pressurization device to create a high-pressure environment inside the valve body 3. Then, foam water is applied to the area to be tested on the valve body 3. The airtightness of the valve body 3 can be determined based on the condition of the foam water.

[0030] Finally, the pressure test of the relief valve body is completed by removing the valve body 3 from the pressure testing fixture 2.

[0031] In summary, this utility model, through the cooperation of clamp 26 with upper cover 24 and lower cover 25, can achieve the fixing and sealing effect of valve body 3. Then, by using a pressure testing device to pressurize the inside of valve body 3, a high-pressure environment is created inside the valve body 3. Furthermore, by applying foam water to the area to be tested on the valve body 3, the airtightness of the valve body 3 can be observed based on the foam water. This further achieves the purpose of pressure testing the 120 relief valve body, and makes disassembly and installation simpler and more convenient.

[0032] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0033] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0036] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A test bench for relieving valve body pressure, characterized in that: The device includes a stand (1), on which a pressure-pressing fixture (2) is provided. The pressure-pressing fixture (2) includes a base plate (21), on which two parallel vertical plates (22) are connected. A mounting base (23) is connected between the two vertical plates (22). A valve body (3) is mounted on the mounting base (23). An upper cover (24) and a lower cover (25) adapted to the valve body (3) are respectively provided on the upper and lower surfaces of the valve body (3). The upper cover (24) and the lower cover (25) are fastened to the valve body (3) by clamps (26) to block the valve port of the valve body (3). A pressure-pressing device is also connected to the valve body.

2. The valve body pressure relief test bench according to claim 1, characterized in that: The lower cover (25), the upper cover (24), and the lower cover (25) are provided with a sealing gasket (4) on the side surface of the lower cover (25) near the valve body (3) that is compatible with the valve port of the valve body (3).

3. The valve body pressure relief test bench according to claim 1, characterized in that: The clamp (26) is U-shaped, and the bottom end of the clamp (26) is threaded with a set screw (261), which abuts against the lower cover (25).

4. The valve body pressure relief test bench according to claim 3, characterized in that: The top cover (24) is threaded with a push rod (241), which abuts against the equalizing valve inside the valve body (3).

5. The valve body pressure relief test bench according to claim 4, characterized in that: The top of the clamp (26) has an avoidance notch (262) corresponding to the top rod (241).

6. The valve body pressure relief test bench according to claim 1, characterized in that: The valve body (3) is connected to the mounting base (23) by a double-ended bolt (231).

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