CN210218749U - Spring compensation type plug valve with movable valve seat - Google Patents
Spring compensation type plug valve with movable valve seat Download PDFInfo
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- CN210218749U CN210218749U CN201920594927.0U CN201920594927U CN210218749U CN 210218749 U CN210218749 U CN 210218749U CN 201920594927 U CN201920594927 U CN 201920594927U CN 210218749 U CN210218749 U CN 210218749U
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Abstract
The utility model relates to a spring compensation formula activity disk seat plug valve mainly used fluid medium pipeline. The valve mainly comprises a valve body, a cock, a spring washer, a valve seat, an upper valve cover, a lower valve cover, a 0-shaped ring for sealing and the like. The valve actuating mechanism is connected to the upper part of the cock, the cock is provided with a through hole, the valve seat is arranged on the cock, and the actuating mechanism drives the cock and the valve seat on the cock to rotate in the valve body. The valve seat and the inner wall surface of the valve body form a sealing pair, and the flow passage is opened or closed through rotation. The valve can effectively ensure the tight attachment of the sealing pair through the compensation force of the spring, and the sealing performance is improved. The back of the valve seat is designed to be communicated with a medium through the circulation hole, the pressure area of the back of the valve seat is larger than that of the sealing surface through the structure that the back of the valve seat and the pressure area of the sealing surface are asymmetric, a certain pressure difference is generated between the sealing surface of the valve seat and the back of the valve seat during work, and the pressure of the back of the valve seat is larger than the side pressure of the sealing surface, so that the higher the medium pressure is.
Description
Technical Field
The utility model relates to a spring compensation formula activity disk seat plug valve, the device are the direct valve of fast switch formula, mainly use as headstock gear on the medium conveying pipeline of trades such as thermoelectricity, nuclear power, petrochemical industry, natural gas, warm expert.
Background
The existing plug valve generally adopts a conical plug hard sealing mechanism, a sealing pair is generally of a fixed structure, and a sealing surface of the valve cannot be well matched together due to abrasion after the valve is subjected to temperature change or works for a period of time, so that the valve is leaked; meanwhile, when the medium contains suspended particles, the jamming event can occur due to the fact that the sealing pair cannot be well adjusted; in addition, the leakage of the valve can be caused due to insufficient specific sealing pressure during high-pressure operation. The spring compensation type movable valve seat plug valve related by the invention well solves the problems in the working process of the plug valve.
Disclosure of Invention
The utility model aims at designing a spring compensation formula activity disk seat plug valve, the problem is revealed to the compensation and the high pressure of effectively solving the valve seal power.
The technical scheme of the utility model a spring compensation formula activity disk seat plug valve is provided, it mainly includes lower valve gap (1), valve gap sealing O type circle (2), valve body (3), butterfly spring (4), cock (5), disk seat (6), disk seat sealing O type circle (7), upper valve gap (8), actuating mechanism (9), cock sealing O type circle (10). The method is characterized in that: the valve seat (6) is arranged in the cock (5) and sealed by a valve seat sealing O-shaped ring (7), the back of the valve seat (6) is provided with a butterfly spring (4) group for pressure compensation, meanwhile, the valve seat (6) is designed to be of a structure that the back is communicated with a medium through a circulation hole, the pressure bearing area of the back of the valve seat and the pressure bearing area of a sealing surface are asymmetric, the pressure bearing area of the back of the valve seat (6) is larger than the area of the sealing surface, a certain pressure difference can be generated between the sealing surface of the valve seat and the back of the valve seat during working, the pressure of the back of the valve seat is larger than the lateral pressure of the sealing surface, the higher the medium; the upper valve cover (8) and the lower valve cover (1) are connected with the valve body (3) through bolts to position internal components such as a cock (5) and the like, and are sealed through the valve cover sealing O-shaped ring (2) and the cock sealing O-shaped ring (10); the execution mechanism (9) is connected with the upper part of the cock (5) through a square matched shaft hole, the rotation of the execution mechanism (9) directly drives the cock (5), the valve seat and other parts to rotate in the valve body, the cock (5) is provided with a through hole with the same diameter as a channel of the valve body, the valve seats on two sides are arranged in the through hole in the 90-degree direction, and the valve is opened and closed alternately through the rotation of the cock (5).
The utility model has the advantages that: the compressed butterfly spring assembly in the spring compensation type movable valve seat generates spring force as compensation force, so that the close fit of the valve seat and a sealing pair on the wall surface of the inner cavity of the valve body is effectively ensured; the leakage problem of the valve under high pressure difference is effectively solved through the structure that the back surface of the valve seat is communicated with the medium and the pressed area of the back surface of the valve seat and the sealing surface is asymmetric.
Drawings
FIG. 1 is a plug valve with spring compensation type movable valve seat
In the figure, 1, a lower valve cover, 2, a valve cover sealing O-shaped ring, 3, a valve body, 4, a butterfly spring, 5, a cock, 6, a valve seat, 7, a valve seat sealing O-shaped ring, 8, an upper valve cover, 9, an actuating mechanism and 10, the cock sealing O-shaped ring
FIG. 2 is an enlarged view of a sealing pair of the plug valve
In the figure, 1, a lower valve cover, 2, a valve cover sealing O-shaped ring, 3, a valve body, 4, a butterfly spring, 5, a cock, 6, a valve seat, 7, a valve seat sealing O-shaped ring and 8, an upper valve cover
Detailed Description
In the embodiment shown in fig. 1, the valve is welded or otherwise attached to the pipe. When the valve is opened, the rotating executing mechanism moves, the executing mechanism drives the cock to rotate, and when the through hole in the cock is communicated with the valve body channel, the valve is opened, and the medium circulates; when the valve is closed, the actuating mechanism is rotated to move, the actuating mechanism drives the cock to rotate, when the valve seat on the cock rotates to the same axis with the valve body channel, a closed sealing pair is formed by the sealing surface of the valve seat and the wall surface of the inner cavity of the valve body, the valve is closed, and medium circulation is blocked.
Claims (1)
1. The utility model provides a novel spring compensation formula activity disk seat plug valve which characterized in that: the automatic valve mainly comprises a lower valve cover (1), a valve cover sealing O-shaped ring (2), a valve body (3), a butterfly spring (4), a cock (5), a valve seat (6), a valve seat sealing O-shaped ring (7), an upper valve cover (8), an executing mechanism (9) and a cock sealing O-shaped ring (10); the valve seat (6) is arranged in the cock (5) and sealed by the valve seat sealing O-shaped ring (7), the back of the valve seat (6) is provided with the butterfly spring (4) group for pressure compensation, so that the tight fit of the valve seat and a sealing pair of the inner cavity wall surface of the valve body is effectively ensured, meanwhile, the valve seat (6) is designed to be communicated with a medium through a circulation hole, the pressure bearing area of the back of the valve seat and the pressure bearing area of a sealing surface are asymmetrical, the pressure bearing area of the back of the valve seat (6) is larger than the area of the sealing surface, a certain pressure difference can be generated between the sealing surface of the valve seat and the back of the valve seat during working, the pressure of the back of the valve seat is larger than the lateral pressure of the sealing surface, the higher the pressure of the medium is; the upper valve cover (8) and the lower valve cover (1) are connected with the valve body (3) through bolts to position internal components of the cock (5), the valve seat (6) and the butterfly spring (4), and meanwhile, the internal components are sealed through the valve cover sealing O-shaped ring (2) and the cock sealing O-shaped ring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920594927.0U CN210218749U (en) | 2019-04-24 | 2019-04-24 | Spring compensation type plug valve with movable valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920594927.0U CN210218749U (en) | 2019-04-24 | 2019-04-24 | Spring compensation type plug valve with movable valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210218749U true CN210218749U (en) | 2020-03-31 |
Family
ID=69924431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920594927.0U Active CN210218749U (en) | 2019-04-24 | 2019-04-24 | Spring compensation type plug valve with movable valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210218749U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094534A (en) * | 2019-04-24 | 2019-08-06 | 哈电集团哈尔滨电站阀门有限公司 | A kind of spring compensating type movable valve seat plug valve |
| CN111779856A (en) * | 2020-07-21 | 2020-10-16 | 亿川科技(成都)有限责任公司 | Angle stroke small flow regulating valve |
-
2019
- 2019-04-24 CN CN201920594927.0U patent/CN210218749U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094534A (en) * | 2019-04-24 | 2019-08-06 | 哈电集团哈尔滨电站阀门有限公司 | A kind of spring compensating type movable valve seat plug valve |
| CN110094534B (en) * | 2019-04-24 | 2024-04-30 | 哈电集团哈尔滨电站阀门有限公司 | Spring compensation type movable valve seat plug valve |
| CN111779856A (en) * | 2020-07-21 | 2020-10-16 | 亿川科技(成都)有限责任公司 | Angle stroke small flow regulating valve |
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