CN218971830U - Double-sealing pair regulating valve - Google Patents
Double-sealing pair regulating valve Download PDFInfo
- Publication number
- CN218971830U CN218971830U CN202221381855.XU CN202221381855U CN218971830U CN 218971830 U CN218971830 U CN 218971830U CN 202221381855 U CN202221381855 U CN 202221381855U CN 218971830 U CN218971830 U CN 218971830U
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- Prior art keywords
- valve
- sealing
- double
- sleeve
- clack
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- 238000007789 sealing Methods 0.000 title claims abstract description 45
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 14
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a double-sealing pair regulating valve, and belongs to the field of thermal power and nuclear power valves. Through the double sealing surface, the system medium is sealed in a grading way, so that zero leakage of the valve is realized, the energy loss of a power plant is reduced, and the service life of the valve is prolonged. The double-sealing auxiliary regulating valve consists of a valve body, a valve seat, a sleeve, a valve rod, a valve clack, a valve cover, a disc spring, a clamp spring and the like. The valve cover compresses tightly the sleeve, compresses tightly the disk seat on the valve body simultaneously, and the valve rod drives the valve clack to close, forms twice sealed pair with the disk seat, effectual realization sealed effect improves valve sealing performance.
Description
Technical Field
The utility model relates to a double-sealing pair regulating valve, and belongs to the field of thermal power and nuclear power valves.
Background
The double sealing surface regulating valve is installed in steam-water system pipeline of thermal power unit and nuclear power unit and is one important device for regulating medium flow, pressure and temperature.
At present, under the double-carbon situation, the high-efficiency and low-carbon operation of a power plant is required, the sealing performance of the regulating valve is required to be solved, the closing of the regulating valve is required to be tight, and the problem of internal leakage cannot occur. The zero leakage can be realized in the closed state, so that the energy loss of the power plant is reduced, and the low-carbon environment-friendly effect is achieved; meanwhile, the service life of the valve can be prolonged, and energy sources are saved.
The utility model adopts the double sealing surface structure regulating valve to effectively solve the problems.
Disclosure of Invention
Aiming at the technical problems, the utility model aims to provide the double-sealing-surface regulating valve, and the system medium is sealed in a grading way through the double sealing surfaces, so that zero leakage of the valve is realized, the energy loss of a power plant is reduced, and the service life of the valve is prolonged.
In order to achieve the aim, the utility model provides a double-seal auxiliary regulating valve which comprises a valve body, a valve seat, a valve clack, a sleeve, a valve rod, a valve cover and the like.
The valve seat is provided with an inner sealing surface and an outer sealing surface, and the outer sealing surface is in contact with the valve clack to realize first-stage sealing; the inner sealing surface is contacted with the valve rod sealing surface to realize second-stage sealing.
The beneficial effects of the utility model are as follows: the first-stage sealing pair contacted with the valve seat through the valve clack firstly realizes the sealing of the medium and reduces the leakage of the medium; meanwhile, the medium pressure passing through the first-stage sealing pair is reduced through the first-stage sealing pair; providing a powerful condition for the second stage sealing pair to realize sealing. The valve rod and the second-stage sealing pair contacted with the valve seat realize the sealing effect efficiently after the effect of the first-stage sealing pair, ensure the sealing performance of the valve and thoroughly solve the problem of internal leakage of the valve.
Drawings
Fig. 1: a structural schematic diagram of a double-sealing auxiliary regulating valve;
fig. 2: a valve seat schematic diagram;
fig. 3: a schematic view of a valve flap;
fig. 4: a valve stem schematic;
in FIG. 1, valve body 1, gasket a, gasket 3, valve seat 4, sleeve 5, valve flap 6, valve stem 7, disc spring 8, compression nut 9, snap spring 10, gasket b, gasket 11, gasket C, nut 12, bolt 13, valve cover 14, and ring 15C.
Detailed Description
In the embodiment shown in fig. 1, the valve seat (3) presses the gasket a (2) against the valve body (1); the sleeve (4) is pressed on the valve seat (3), so that the valve seat (3) and the gasket a (2) are pressed tightly, and the gasket a (2) is ensured to be sealed. The valve cover (14) compresses the sleeve (4), and simultaneously compresses the gasket b (10) and the gasket c (11), so that the sealing of the valve cover is ensured.
The valve cover (14) is connected with the valve body (1) through a bolt (13) and a nut (12), and the valve cover (14), the gasket b (10), the gasket c (11), the sleeve (4), the valve seat (3) and the gasket a (2) are compressed tightly.
The valve clack (5) is pressed on the valve rod (6) through the disc spring (7), the disc spring (7) is pressed through the compression nut (8), and meanwhile, the compression nut is positioned through the clamping spring, assembled into a whole, and then integrally penetrates through the valve cover (14).
In the valve closing state, the valve clack (5) forms a sealing pair with the outer sealing surface of the valve seat (3) through the acting force of the disc spring (7), and the sealing pair and the C-shaped ring (15) realize primary sealing together. The valve rod (6) and the inner sealing surface of the valve seat (3) form a sealing pair, so that the second-stage sealing is realized. Through the two sealing pairs, the sealing effect is effectively realized, the sealing performance of the valve is improved, and the problem of internal leakage of the valve is solved.
Claims (1)
1. A double-seal auxiliary regulating valve comprises a valve body, a valve seat, a valve clack, a sleeve, a valve rod and a valve cover; the valve body is connected with the valve seat, and the valve cover compresses the sleeve and then compresses the valve seat; the valve seat is provided with an inner sealing surface and an outer sealing surface, the valve clack is clamped on the valve rod by the disc spring and the clamp spring, and a C-shaped ring is arranged between the valve rod and the sleeve, so that the tightness between the two parts is ensured; the valve clack and the valve seat form a first sealing pair; the valve rod and the valve seat form a second sealing pair to realize two-stage sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221381855.XU CN218971830U (en) | 2022-04-29 | 2022-04-29 | Double-sealing pair regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221381855.XU CN218971830U (en) | 2022-04-29 | 2022-04-29 | Double-sealing pair regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218971830U true CN218971830U (en) | 2023-05-05 |
Family
ID=86149139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221381855.XU Active CN218971830U (en) | 2022-04-29 | 2022-04-29 | Double-sealing pair regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218971830U (en) |
-
2022
- 2022-04-29 CN CN202221381855.XU patent/CN218971830U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |