CN210240600U - Helium-level elastic double-sealing stop valve clack structure - Google Patents
Helium-level elastic double-sealing stop valve clack structure Download PDFInfo
- Publication number
- CN210240600U CN210240600U CN201920931232.7U CN201920931232U CN210240600U CN 210240600 U CN210240600 U CN 210240600U CN 201920931232 U CN201920931232 U CN 201920931232U CN 210240600 U CN210240600 U CN 210240600U
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- Prior art keywords
- valve clack
- metal
- helium
- valve
- valve body
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- 239000001307 helium Substances 0.000 title claims abstract description 19
- 229910052734 helium Inorganic materials 0.000 title claims abstract description 19
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 title description 13
- 239000002184 metal Substances 0.000 claims abstract description 23
- 230000009977 dual effect Effects 0.000 claims abstract description 6
- 239000011261 inert gas Substances 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 4
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The utility model provides a helium level elasticity dual seal stop valve clack structure, includes valve clack, lower valve clack, valve body, it is sealed vice with the valve body internal surface butt to go up the valve clack, it is equipped with the groove face with lower valve clack top to go up the valve clack bottom, the groove face is embedded to have metal O type circle, metal O type circle and valve body internal surface butt form the line contact and seal vice. The beneficial effects of the utility model are that, the sealed pair dual seal structure that forms of line contact and face contact has realized that the helium level is sealed.
Description
Technical Field
The utility model relates to a helium level elasticity dual seal stop valve clack structure.
Background
In high temperature gas cooled reactors, shut-off valves are typically used for the purpose of isolating helium gas. However, because helium has strong permeability, for the metal sealing form (metal-to-metal sealing pair form) of the commonly used stop valve, whether a plane sealing (the valve flap structure is in a flat plate form) or a conical sealing (the valve flap structure is in a conical form), the two single sealing forms can hardly meet the helium-level sealing requirement of the valve. If the valve used in the high-temperature gas cooled reactor cannot effectively isolate helium (the leakage amount of the helium exceeds the standard), on one hand, the helium is wasted, and on the other hand, the loss of the core energy of the high-temperature gas cooled reactor is caused.
SUMMERY OF THE UTILITY MODEL
In order to overcome the prior art problem, the utility model provides a helium level elasticity double seal stop valve clack structure.
The technical scheme of the utility model, a helium level elasticity dual seal stop valve clack structure, including last valve clack, lower valve clack, valve body, go up valve clack and valve body internal surface butt, it is sealed vice to form the face contact, it is equipped with the groove face with lower valve clack top to go up valve clack bottom, the inslot face is embedded to have metal O type circle, metal O type circle and valve body internal surface butt form the line contact and seal vice.
Furthermore, the metal material of the outer surface of the metal O-shaped ring is the same as that of the valve body.
Further, the inner cavity of the metal O-shaped ring is filled with inert gas.
The beneficial effects of the utility model are that, when the improvement along with operating mode temperature, the inert gas of metal O type circle inner chamber can take place utmost point along with the rising of temperature and gather the inflation, under the unchangeable circumstances of volume, take place the isochoric change, will arouse the sharp increase of pressure of metal O type circle inner chamber, under the change of pressure, make metal O shape circle have good elasticity, further closely laminate with the valve body internal surface, it is vice to form the line contact, form double seal structure with the face contact sealing pair that last valve clack and valve body internal surface butt formed, helium level is sealed has been realized.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. an upper valve flap; 2. a lower valve clack; 3. a valve body; 4. a metal O-ring.
Detailed Description
As shown in figure 1, a helium level elasticity dual seal stop valve clack structure, includes valve clack, lower valve clack, valve body, go up valve clack and valve body internal surface butt, it is vice to form the face contact seal, it is equipped with the groove face with lower valve clack top to go up valve clack bottom, the inslot face is embedded to have metal O type circle, metal O type circle and valve body internal surface butt, the outside metal material of metal O type circle is the same with the valve body material, metal O type circle inner chamber is filled with inert gas. When the working temperature is increased, the inert gas in the inner cavity of the metal O-shaped ring can generate polar aggregation expansion along with the increase of the temperature, and under the condition of unchanged volume, the volume changes in an equal volume manner, so that the pressure in the inner cavity of the metal O-shaped ring is increased sharply, the metal O-shaped ring has good elasticity under the change of the pressure, is further tightly attached to the inner surface of the valve body, forms a linear contact sealing pair, and forms a double sealing structure with a surface contact sealing pair formed by the abutting of the upper valve clack and the inner surface of the valve body, so that helium level sealing is realized.
Claims (3)
1. The utility model provides a helium level elasticity dual seal stop valve clack structure, includes valve clack, lower valve clack, valve body, go up valve clack and valve body internal surface butt, it is sealed vice to form the face contact, its characterized in that, it is equipped with the groove face with lower valve clack top to go up valve clack bottom, the groove face is embedded to have metal O type circle, metal O type circle and valve body internal surface butt.
2. The helium grade resilient double seal stop valve flap structure of claim 1, wherein the metal material outside the metal O-ring is the same as the valve body material.
3. The helium grade resilient double seal stop valve flap structure of claim 2, wherein the metal O-ring cavity is filled with an inert gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920931232.7U CN210240600U (en) | 2019-06-20 | 2019-06-20 | Helium-level elastic double-sealing stop valve clack structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920931232.7U CN210240600U (en) | 2019-06-20 | 2019-06-20 | Helium-level elastic double-sealing stop valve clack structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210240600U true CN210240600U (en) | 2020-04-03 |
Family
ID=69986865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920931232.7U Active CN210240600U (en) | 2019-06-20 | 2019-06-20 | Helium-level elastic double-sealing stop valve clack structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210240600U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242757A (en) * | 2019-06-20 | 2019-09-17 | 江苏神通阀门股份有限公司 | A kind of helium grade elasticity Double sealing globe valve valve flap structure |
-
2019
- 2019-06-20 CN CN201920931232.7U patent/CN210240600U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242757A (en) * | 2019-06-20 | 2019-09-17 | 江苏神通阀门股份有限公司 | A kind of helium grade elasticity Double sealing globe valve valve flap structure |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |