CN215258026U - High-pressure safety valve with complete pressure relief function - Google Patents
High-pressure safety valve with complete pressure relief function Download PDFInfo
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- CN215258026U CN215258026U CN202121368601.XU CN202121368601U CN215258026U CN 215258026 U CN215258026 U CN 215258026U CN 202121368601 U CN202121368601 U CN 202121368601U CN 215258026 U CN215258026 U CN 215258026U
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- valve seat
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Abstract
The utility model discloses a high pressure relief valve with complete pressure release function, relief valve include casing, lower casing, go up and be equipped with piston, spring in the casing to through sealing washer and gasket and last casing equipment, be equipped with the valve seat in the casing down, and through lower seal circle and the sealed fastening of casing down, the valve is sealed through sealed piece with the assembly of valve seat, go up casing and lower casing and pass through threaded connection. The piston, the sealing ring in the upper shell, the valve seat, the sealing block and the valve in the lower shell form a safety valve pressure relief cavity together. When the safety valve is closed, the system can be kept in a high-pressure state; after the safety valve is opened, the system pressure is reduced until the pressure is completely relieved, and the safety valve is closed.
Description
Technical Field
The utility model relates to a safety valve, especially adapted use in requiring high-pressure system of complete pressure release.
Background
The purpose of the safety valve is to limit the highest pressure in the system, the existing safety valve has the functions of opening to release the pressure when the system pressure is higher than the safety pressure, and closing to maintain the pressure when the pressure is reduced to the safety pressure, so that the safety valve cannot adapt to the requirement of a special system needing complete pressure release.
Disclosure of Invention
The utility model aims to provide a relief valve that is applicable to high-pressure system, has complete pressure release function.
The utility model discloses a task is accomplished like this, its characterized in that: the safety valve comprises an upper shell and a lower shell, wherein a piston and a spring are arranged in the upper shell and assembled with the upper shell through a sealing ring and a gasket, a valve seat is arranged in the lower shell and is fastened with the lower shell in a sealing manner through a lower sealing ring, a valve is assembled with the valve seat and sealed through a sealing block, and the upper shell and the lower shell are connected through threads. The piston, the sealing ring in the upper shell, the valve seat, the sealing block and the valve in the lower shell form a safety valve pressure relief cavity together. The sealing block is stretched and then guided into the valve seat, and the sealing block is naturally contracted and then fixed in the groove on the valve seat and assembled into the lower shell together with the valve seat.
The utility model discloses has following effect: when the safety valve is closed, the system can be kept in a high-pressure state; after the safety valve is opened, the system pressure is reduced until the pressure is completely relieved, and the safety valve is closed.
Drawings
Fig. 1 is a schematic structural diagram of the present invention; FIG. 2 is a schematic view of the partial safety valve of FIG. 1 in a closed condition; fig. 3 is a schematic view of the partial safety valve of fig. 1 in an open state.
Description of the drawings: 1. the pressure sensing device comprises an upper shell, 2, a piston, 3, a sealing ring, 4, a lower shell, 5, a valve seat, 6, a sealing ring, 7, a sealing block, 8, a valve, 9, a spring, 10, a gasket, 11, a pressure relief opening, 12 and a pressure sensing cavity.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
The specific embodiment is shown in fig. 1, fig. 2 and fig. 3, in the technical scheme, a pressure relief structure is formed by changing the pressure sensing area before and after opening, when the safety valve is closed, the system can be kept in a high-pressure state, after the high-pressure safety valve is opened, the system pressure is reduced until the safety valve is closed after complete pressure relief. The safety valve comprises an upper shell 1 and a lower shell 4, wherein a piston 2 and a spring 9 are installed in the upper shell and assembled with the upper shell 1 through a sealing ring 3 and a gasket 10, a valve seat 5 is installed in the lower shell and fastened with the lower shell in a sealing mode through a lower sealing ring 6, and a valve 8 is assembled with the valve seat and sealed through a sealing block 7. The upper shell and the lower shell are connected through threads.
The piston 2, the sealing ring 3, the valve seat 5, the sealing block 7 and the valve 8 in the upper shell and the lower shell form a safety valve pressure relief cavity together, and a pressure relief opening 11 is formed in the pressure relief cavity.
The sealing block 7 has elasticity, is guided into the valve seat after being stretched, is fixed in the groove on the valve seat after being naturally contracted, and is assembled into the lower shell together with the valve seat.
When the high-pressure safety valve is closed, the pressure sensing cavity 12 is disconnected from the system, as shown in fig. 2; when the safety valve is opened, the pressure sensing cavity is communicated with the system through a small hole on the valve seat, as shown in figure 3 (the arrow in the figure indicates the flow direction of the medium).
When the safety valve works, when the safety valve is closed, the valve 8 senses system pressure, and because the sealing area (namely the pressure sensing area when the safety valve is closed) of the valve is small, higher pressure is needed, and the valve 8 is opened by overcoming the spring force; when the valve 8 is opened, the system is communicated with the pressure sensing cavity 12, the system pressure enters the pressure sensing cavity, the piston 2 senses the system pressure, and the valve 8 can be opened by overcoming the spring force only with very low pressure due to the large sealing area (namely the pressure sensing area when the valve is opened) of the piston 2. Therefore, after the safety valve 8 is opened, the safety valve can be closed only by completely relieving the pressure of the system, and the function of completely relieving the pressure is realized.
When the safety valve is closed, the system can be kept in a high-pressure state, the system pressure is reduced after the safety valve is opened, and the safety valve is completely closed until the safety pressure is released.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected, and may communicate between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Claims (3)
1. The utility model provides a high-pressure safety valve with complete pressure release function which characterized in that: the safety valve comprises an upper shell and a lower shell, wherein a piston and a spring are arranged in the upper shell and assembled with the upper shell through a sealing ring and a gasket, a valve seat is arranged in the lower shell and is fastened with the lower shell in a sealing manner through a lower sealing ring, a valve is assembled with the valve seat and sealed through a sealing block, and the upper shell and the lower shell are connected through threads.
2. A safety valve having a complete pressure relief function as claimed in claim 1, wherein: the piston, the sealing ring in the upper shell, the valve seat, the sealing block and the valve in the lower shell form a safety valve pressure relief cavity together.
3. A safety valve having a complete pressure relief function as claimed in claim 1, wherein: the sealing block is stretched and then guided into the valve seat, and the sealing block is naturally contracted and then fixed in the groove on the valve seat and assembled into the lower shell together with the valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121368601.XU CN215258026U (en) | 2021-06-21 | 2021-06-21 | High-pressure safety valve with complete pressure relief function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121368601.XU CN215258026U (en) | 2021-06-21 | 2021-06-21 | High-pressure safety valve with complete pressure relief function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215258026U true CN215258026U (en) | 2021-12-21 |
Family
ID=79481232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121368601.XU Active CN215258026U (en) | 2021-06-21 | 2021-06-21 | High-pressure safety valve with complete pressure relief function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215258026U (en) |
-
2021
- 2021-06-21 CN CN202121368601.XU patent/CN215258026U/en active Active
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