Pilot-operated type safety relief valve

Abstract

The utility model relates to the technical field of pressure release valves, in particular to a pilot-operated type safety pressure release valve which comprises a main valve body, air chambers are arranged between the two sides in the main valve body, main valve springs are arranged between the two sides in the air chambers, a valve sleeve is arranged at the bottom of each main valve spring, a main body valve element is arranged at the bottom of each valve sleeve, and a valve core is arranged at the bottom of each main body valve element. A sealing head is arranged at the bottom of the main body valve core; the valve has the beneficial effects that the sealing lantern ring can be fixed on the sealing head in the valve seat by using the plurality of arc-shaped elastic sheets, so that the sealing lantern ring can be wrapped and sealed even if the valve is abraded, the whole valve does not need to be replaced by personnel, and the sealing performance and the service life can be improved as much as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure relief valves, in particular to a pilot-operated safety pressure relief valve. Background Art

[0002] The operating principle of a pilot-operated safety relief valve is relatively complex but highly effective. When the pressure of the medium within a device or pipeline rises above a specified value, the pilot valve opens first. The medium flows through the conduit into the main valve, pushing it open and discharging the medium to the outside of the system, preventing the pressure within the pipeline or device from exceeding the specified value. This process is achieved by feeding back the change in inlet pressure to the pilot valve, which then controls the opening and closing of the main valve plate, thereby maintaining a safe and stable pressure in the pipeline.

[0003] However, in the prior art, the existing pilot-operated safety pressure relief valve generally relies on the upper and lower merging of the main valve core and the valve seat to complete the operation when in use. As a result, after a long time, the valve seat itself will wear out and the sealing performance will decrease, requiring personnel to replace the entire valve, resulting in a shortened service life of the device. Utility Model Content

[0004] The utility model provides a pilot-operated safety pressure relief valve, which solves the structural technical problem that the valve seat itself is worn for a long time, resulting in a decrease in sealing performance and a shortened service life of the device.

[0005] The utility model solves the above-mentioned technical problems with the following solution: A pilot-operated safety pressure relief valve comprises a main valve body, air chambers are provided between both sides of the interior of the main valve body, main valve springs are provided between both sides of the interior of the air chambers, a valve sleeve is provided at the bottom of the main valve spring, a main valve core is provided at the bottom of the valve sleeve, a sealing head is provided at the bottom of the main valve core, valve seats are provided between both sides of the interior of the main valve body near the bottom, a plurality of arc-shaped spring pieces are provided on the inner surface wall of the valve seat, and a sealing collar is connected to the inner surface wall of the valve seat via the plurality of arc-shaped spring pieces.

[0006] The beneficial effects of the present invention are as follows: the main valve body mainly plays a role of facilitating storage, the arranged air chamber facilitates the entry of gas for pushing, the main valve spring can be conveniently connected to the valve sleeve, the valve sleeve can be conveniently fixed and supported on the main valve core, the main valve core plays a role of supporting the sealing head, the sealing head can be conveniently inserted and fixedly merged with the valve seat, the valve seat can be conveniently fitted with the sealing head and the main valve core, the arc-shaped spring piece can support the sealing ring, so that the sealing ring can be fitted to the periphery of the sealing head, thereby ensuring that no leakage occurs.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, a No. 1 flange is provided on one side of the main valve body.

[0009] The beneficial effect of adopting the above further solution is that the No. 1 flange can be easily connected to the side pipe.

[0010] Furthermore, a second flange is provided at the bottom of the main valve body.

[0011] The beneficial effect of adopting the above further solution is that the provided No. 2 flange can be easily connected to the bottom of the device for pipe connection.

[0012] Furthermore, a No. 1 pressure-guiding pipeline is provided on one side of the main valve body.

[0013] The beneficial effect of adopting the above further solution is that the provided No. 1 pressure-introducing pipe can allow pressurized gas to pass into the interior of the main valve body.

[0014] Furthermore, a second pressure-guiding pipe is provided on one side of the main valve body near the bottom.

[0015] The beneficial effect of adopting the above further solution is that the provided No. 2 pressure-guiding pipeline can be connected to the pilot valve.

[0016] Furthermore, a pilot valve is provided between one side of the No. 1 pressure-guiding pipeline and the No. 2 pressure-guiding pipeline.

[0017] The beneficial effect of adopting the above further solution is that the pilot valve can easily control the opening and closing of the main valve body.

[0018] Beneficial effect: By using multiple arc-shaped springs, the sealing ring can be fixed on the sealing head inside the valve seat, so that the seal can be covered even if wear occurs, without the need for personnel to replace the entire valve, and the sealing performance and service life can be improved as much as possible.

[0019] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the following is a detailed description of the preferred embodiments of the present invention with the accompanying drawings. The specific implementation methods of the present invention are given in detail in the following embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 A three-dimensional diagram of a pilot-operated safety pressure relief valve is provided for the utility model;

[0022] Figure 2 The utility model provides a front view cross-sectional structural diagram of a pilot-operated safety pressure relief valve;

[0023] Figure 3 This utility model proposes a pilot-operated safety pressure relief valve Figure 2 Enlarged stereoscopic image of part A in the middle.

[0024] Legend:

[0025] 1. Main valve body; 2. Air chamber; 3. Main valve spring; 4. Valve sleeve; 5. Main valve core; 6. Sealing head; 7. Valve seat; 8. Arc-shaped spring; 9. Sealing collar; 10. Flange No. 1; 11. Flange No. 2; 12. Pressure guide pipe No. 1; 13. Pressure guide pipe No. 2; 14. Pilot valve. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-3 The principles and features of the present invention are described, and the examples provided are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0027] Example 1

[0028] like Figure 1-3 As shown, the utility model is a pilot-operated safety pressure relief valve, comprising a main valve body 1, air chambers 2 are provided between both sides of the interior of the main valve body 1, main valve springs 3 are provided between both sides of the interior of the air chamber 2, a valve sleeve 4 is provided at the bottom of the main valve spring 3, a main valve core 5 is provided at the bottom of the valve sleeve 4, a sealing head 6 is provided at the bottom of the main valve core 5, valve seats 7 are provided between both sides of the interior of the main valve body 1 near the bottom, a plurality of arc-shaped spring pieces 8 are provided on the inner surface wall of the valve seat 7, and a sealing collar 9 is connected to the inner surface wall of the valve seat 7 through the plurality of arc-shaped spring pieces 8.

[0029] Example 2

[0030] like Figure 1-3 As shown, a first flange 10 is provided on one side of the main valve body 1 , a second flange 11 is provided on the bottom of the main valve body 1 , and a first pressure-guiding pipe 12 is provided on one side of the main valve body 1 .

[0031] In this embodiment, the No. 1 flange 10 can be conveniently connected to the side pipe, the No. 2 flange 11 can be conveniently connected to the bottom pipe of the device, and the No. 1 pressure-leading pipe 12 can allow the pressurized gas to pass into the interior of the main valve body 1.

[0032] Example 3

[0033] like Figure 1-3 As shown, a second pressure-guiding pipe 13 is provided on one side of the main valve body 1 near the bottom, and a pilot valve 14 is provided between one side of the first pressure-guiding pipe 12 and the second pressure-guiding pipe 13 .

[0034] In this embodiment, the second pressure-introducing pipe 13 can be connected to the pilot valve 14 , and the pilot valve 14 can facilitate the control of the opening and closing of the main valve body 1 .

[0035] Working principle:

[0036] When the main valve body 1 needs to be sealed, the main valve core 5 with the sealing head 6 is fitted into the inside of the valve seat 7. The sealing head 6 can seal the valve seat 7. The arc-shaped spring piece 8 inside the valve seat 7 can allow the sealing ring 9 to be fixed on the sealing head 6 inside the valve seat 7. In this way, even if wear occurs, the seal can be covered, and there is no need for personnel to replace the entire valve, which can improve the sealing performance and service life as much as possible.

[0037] The above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A pilot-operated safety pressure relief valve, comprising a main valve body (1), characterized in that: An air chamber (2) is provided between both sides of the interior of the main valve body (1), a main valve spring (3) is provided between both sides of the interior of the air chamber (2), a valve sleeve (4) is provided at the bottom of the main valve spring (3), a main valve core (5) is provided at the bottom of the valve sleeve (4), a sealing head (6) is provided at the bottom of the main valve core (5), a valve seat (7) is provided between both sides of the interior of the main valve body (1) near the bottom, a plurality of arc-shaped spring pieces (8) are provided on the inner surface wall of the valve seat (7), and the inner surface wall of the valve seat (7) is connected to a sealing ring (9) through the plurality of arc-shaped spring pieces (8).

2. A pilot-operated safety pressure relief valve according to claim 1, characterized in that: A first flange (10) is provided on one side of the main valve body (1).

3. The pilot-operated safety pressure relief valve according to claim 1, characterized in that: A second flange (11) is provided at the bottom of the main valve body (1).

4. The pilot-operated safety pressure relief valve according to claim 1, characterized in that: A first pressure-guiding pipe (12) is provided on one side of the main valve body (1).

5. The pilot-operated safety pressure relief valve according to claim 1, characterized in that: A second pressure-guiding pipe (13) is provided on one side of the main valve body (1) near the bottom.

6. The pilot-operated safety pressure relief valve according to claim 4, characterized in that: A pilot valve (14) is provided between one side of the No. 1 pressure-guiding pipeline (12) and the No. 2 pressure-guiding pipeline (13).

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