CN211371324U - Helium isolating valve capable of replacing valve seat on line for high-temperature gas cooled reactor - Google Patents
Helium isolating valve capable of replacing valve seat on line for high-temperature gas cooled reactor Download PDFInfo
- Publication number
- CN211371324U CN211371324U CN201922166329.6U CN201922166329U CN211371324U CN 211371324 U CN211371324 U CN 211371324U CN 201922166329 U CN201922166329 U CN 201922166329U CN 211371324 U CN211371324 U CN 211371324U
- Authority
- CN
- China
- Prior art keywords
- valve
- disk seat
- seat
- valve body
- clack
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000001307 helium Substances 0.000 title claims abstract description 16
- 229910052734 helium Inorganic materials 0.000 title claims abstract description 16
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000007789 gas Substances 0.000 title abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 5
- 210000004907 gland Anatomy 0.000 claims abstract description 3
- 238000007747 plating Methods 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 20
- 239000000945 filler Substances 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005253 cladding Methods 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 abstract description 2
- 238000012856 packing Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
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Abstract
The utility model provides a can change high temperature gas cooling of disk seat and use helium isolating valve, which comprises a valve body, a valve seat, the valve gap, the valve clack, the valve rod, disk seat and valve body are split type structure, be equipped with O type circle between valve body and the disk seat, O type circle is metal O type circle, the host material is 1Cr18Ni9Ti, metal O type circle surface silvering, cladding thickness is 30~40 mu m, the valve gap is long neck type, valve gap long neck bottom surface and disk seat butt, the valve clack is connected through the gland formula structrual joint who takes the split ring with the valve rod, the dynamic seal of valve rod carries out double sealing through bellows and filler. The beneficial effects of the utility model are that, when the sealing performance between valve clack and the disk seat is not good, because disk seat and valve body are split type structure, the disk seat can be dismantled, has realized the function of changing the disk seat on line.
Description
Technical Field
The utility model relates to an isolating valve, especially a can change helium isolating valve for high temperature gas cooled reactor of disk seat on line.
Background
In high temperature gas cooled reactors, shut-off valves are commonly used to achieve the purpose of isolating helium, but because of the high permeability of helium, in addition to the requirement that the leakage rate of helium in high temperature gas cooled reactors is less than 1 × 10-5Pa•m3And s. After a stop valve in the high-temperature gas cooled reactor is opened and closed for a long time, a metal sealing surface is abraded, the sealing performance is reduced, and the helium leakage rate exceeds the standard. If the stop valve is not maintained in time, on one hand, helium is wasted, and more seriously, the excessive helium causes the loss of the reactor core energy of the high-temperature gas cooled reactor.
SUMMERY OF THE UTILITY MODEL
In order to overcome the prior art problems, the utility model provides a can change helium isolating valve for high temperature gas cooled reactor of disk seat on line.
The technical scheme of the utility model be, a can change high temperature gas cooling of disk seat on line and pile with helium isolating valve, including valve body, disk seat, valve gap, valve clack, valve rod, the disk seat is split type structure with the valve body, be equipped with O type circle between valve body and the disk seat, O type circle is metal O type circle, and the host material is 1Cr18Ni9Ti, metal O type circle surface silvering, cladding material thickness are 30~40 mu m, the valve gap is long neck type, valve gap long neck bottom surface and disk seat butt, the valve clack passes through the gland formula structural connection who takes the split ring with the valve rod, the dynamic seal of valve rod carries out double sealing through bellows and filler.
The beneficial effects of the utility model are that, when the sealing performance between valve clack and the disk seat is not good, because disk seat and valve body are split type structure, the disk seat can be dismantled, has realized the function of changing the disk seat on line. Simultaneously be equipped with O type circle between valve body and disk seat to provide the pretightning force through valve gap long neck bottom surface and disk seat butt, thereby solved the not convenience of online maintenance when having guaranteed split type disk seat's sealing performance.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a partial enlarged view of the valve body and the valve seat of the present invention.
In the figure: 1. a valve body; 2, an O-shaped ring; 3. a valve seat; 4. a valve flap; 5. the circular rings are split; 6. a valve cover; 7. a bellows; 8. a valve stem; 9. a stuffing box; 10. a filler; 11. pressing and sleeving the filler; 12. a packing press plate; 13. a support; 14. and (6) electric fitting.
Detailed Description
As shown in the figure, the helium isolating valve for the high-temperature gas cooled reactor with the valve seat capable of being replaced on line comprises a valve body, a valve seat, a valve cover, a valve clack and a valve rod, wherein the valve seat and the valve body are of a split structure, an O-shaped ring is arranged between the valve body and the valve seat to realize sealing, the O-shaped ring is a metal O-shaped ring, the main material is 1Cr18Ni9Ti, the outer surface of the metal O-shaped ring is plated with silver, the thickness of a plating layer is 30-40 mu m, the valve cover has the advantages of high temperature resistance and good sealing performance, helium level sealing under a high-temperature working condition can be realized, the valve cover is of a long neck shape, the bottom surface of the long neck of the valve cover is abutted against the valve seat to provide sufficient pre-tightening force for the O-shaped ring on the valve seat, so that the valve body and the valve seat are sealed, the long, the valve rod head has certain shake amount around the valve clack, so that the sealing pair is automatically aligned, the dynamic seal of the valve rod is subjected to double sealing through the corrugated pipe and the filler, and when the corrugated pipe fails, the filler can play a role in making up the seal.
The helium isolating valve for the high-temperature gas cooled reactor in the structural form can meet the sealing requirements of dynamic sealing positions of the valve clack, the valve seat and the valve rod, and meanwhile, the function of replacing the sealing pair on line is realized by adopting a split structure of the valve seat and the valve body. The specific disassembling and assembling steps are as follows:
step 1: the fastening piece of the bracket and the electric fitting is disassembled, and the electric fitting is disassembled;
step 2: the fastening piece of the bracket and the valve cover is disassembled, and the bracket is taken down;
and step 3: detaching the pre-tightening bolt on the packing pressing plate, and sequentially removing the packing pressing plate and the packing pressing sleeve;
and 4, step 4: taking down the stuffing box, the valve rod, the corrugated pipe and the valve clack;
and 5: the fastening piece between the valve cover and the valve body is disassembled, and the valve cover is taken down;
step 6: the valve seat is disassembled, and the valve seat with good sealing pair is replaced, so that the replacement of the sealing pair of the valve seat is completed;
and 7: taking the valve clack out of the valve rod, and replacing the valve clack with a good sealing pair to finish the replacement of the sealing pair of the valve clack;
and 8: and after the sealing pair is replaced, the rest parts are sequentially installed.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (1)
1. The helium isolating valve comprises a valve body, a valve seat, a valve cover, a valve clack and a valve rod, and is characterized in that the valve seat and the valve body are of a split structure, an O-shaped ring is arranged between the valve body and the valve seat, the O-shaped ring is a metal O-shaped ring, the main material of the O-shaped ring is 1Cr18Ni9Ti, the outer surface of the metal O-shaped ring is plated with silver, the thickness of a plating layer is 30-40 mu m, the valve cover is of a long-neck shape, the bottom surface of the long-neck part of the valve cover is abutted to the valve seat, the valve clack and the valve rod are connected through a gland type structure with a split ring, and the dynamic seal of the valve rod is double.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922166329.6U CN211371324U (en) | 2019-12-06 | 2019-12-06 | Helium isolating valve capable of replacing valve seat on line for high-temperature gas cooled reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922166329.6U CN211371324U (en) | 2019-12-06 | 2019-12-06 | Helium isolating valve capable of replacing valve seat on line for high-temperature gas cooled reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211371324U true CN211371324U (en) | 2020-08-28 |
Family
ID=72153343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922166329.6U Active CN211371324U (en) | 2019-12-06 | 2019-12-06 | Helium isolating valve capable of replacing valve seat on line for high-temperature gas cooled reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211371324U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113753502A (en) * | 2021-01-30 | 2021-12-07 | 江苏明江阀业有限公司 | Star-shaped rotary valve with split valve cover and brand-new valve rod sealing structure |
| CN114255894A (en) * | 2021-12-03 | 2022-03-29 | 清华大学 | Steam generator of high-temperature gas cooled reactor type supercritical ultra-supercritical boiler |
-
2019
- 2019-12-06 CN CN201922166329.6U patent/CN211371324U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113753502A (en) * | 2021-01-30 | 2021-12-07 | 江苏明江阀业有限公司 | Star-shaped rotary valve with split valve cover and brand-new valve rod sealing structure |
| CN113753502B (en) * | 2021-01-30 | 2022-05-27 | 江苏明江阀业有限公司 | Star-shaped rotary valve with split valve cover and brand-new valve rod sealing structure |
| CN114255894A (en) * | 2021-12-03 | 2022-03-29 | 清华大学 | Steam generator of high-temperature gas cooled reactor type supercritical ultra-supercritical boiler |
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