CN202349207U - Combined sealing ring for high-pressure hydrogen stop valve - Google Patents
Combined sealing ring for high-pressure hydrogen stop valve Download PDFInfo
- Publication number
- CN202349207U CN202349207U CN2011205073087U CN201120507308U CN202349207U CN 202349207 U CN202349207 U CN 202349207U CN 2011205073087 U CN2011205073087 U CN 2011205073087U CN 201120507308 U CN201120507308 U CN 201120507308U CN 202349207 U CN202349207 U CN 202349207U
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- stop valve
- valve
- hydrogen
- combined sealing
- 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.)
- Expired - Fee Related
Links
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 29
- 239000001257 hydrogen Substances 0.000 title claims abstract description 29
- 238000007789 sealing Methods 0.000 title claims abstract description 27
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 12
- 239000007770 graphite material Substances 0.000 claims abstract description 3
- 229910052755 nonmetal Inorganic materials 0.000 claims description 2
- 238000012856 packing Methods 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910002804 graphite Inorganic materials 0.000 description 6
- 239000010439 graphite Substances 0.000 description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 5
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 5
- 238000005984 hydrogenation reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000004517 catalytic hydrocracking Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- -1 inflammable Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000003079 shale oil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Abstract
The utility model discloses a combined sealing ring for a high-pressure hydrogen stop valve. The combined sealing ring for the high-pressure hydrogen stop valve is formed through arranging a metal main sealing ring and an auxiliary sealing ring made of non-metallic flexible graphite material between a valve cap and a valve body. According to the utility model, zero leakage is realized through arranging the auxiliary sealing ring easily reaching the seal specific pressure to avoid little leakage generated by the main sealing ring.
Description
Technical field
The utility model relates to the seal ring that a kind of high pressure in the hydrogenation plant faces the hydrogen stop valve, and particularly a kind of high pressure faces the combined sealing ring of hydrogen stop valve.
Background technique
Hydrogen addition technology is meant raw material under hydrogen pressure and catalyzer condition, reaches one type of process engineering general name of product requirement through hydrogenation reaction and hydrocracking reaction.The main task of hydrogen addition technology be change the raw material chemical composition, remove impurity, improve quality of product, the lighting of oil (distillate, residual oil and shale oil) and coal.
Hydrogenation plant is in high temperature, high pressure, faces hydrogen, inflammable, explosive, poisonous medium operating environment.Hydrogenation plant faces the hydrogen stop valve with high pressure and belongs to A level pipeline valve; Its work is pressed to (being working pressure >=15Mpa) more than or equal to Class 900; Its medium kind is hydrogen, hydrogen+hydrogen sulfide, hydrogen+oil gas+hydrogen sulfide etc.; Hydrogen in the process-stream has intense explosion danger and penetrability, and the hydrogen sulfide that contains in the medium is hypertoxic gas, and the leakage that high pressure faces the hydrogen stop valve possibly produce serious consequence.
The form that is tightly connected (being the lumen design of valve) that high pressure faces the valve body and the valve gap of hydrogen stop valve adopts interior the pressure being connected of self-fastening sealing structure usually; As shown in Figure 1: before boosting; The bolt 3 of screwing earlier; Valve gap 1 is risen, make between valve gap 1 and the metallic packing ring 10, formation initial sealing condition---the pretension specific pressure on the sealing surface between valve body 8 and the metallic packing ring 10.When pressure medium rises; Valve gap 1 is moved up by the pressure medium effect, and the seal pressure between valve gap 1 and metallic packing ring 10 and valve body 8 and the metallic packing ring 10 increases with the increase of pressure gradually, moves up because of pendant collet 7 and gasket ring 9 have limited metallic packing ring 10; When the pressure medium that rises reaches certain value; Make metallic packing ring 10 produce plastic deformation, reach sealing, stop the leakage of medium thereby make between valve body 8 and the valve gap 1.
Structure shown in Figure 1, very high to machining accuracy and matching requirements, make difficulty.Because valve body 8 or valve gap 1 or metallic packing ring 10 are in manufacture process; Receive the influence of composite factors such as processor's technical merit, machining apparatus, manufacturing process, can cause the mechanical property of fit dimension precision or surface roughness or metallic packing ring 10 unreasonable; Because the medium that high pressure faces the hydrogen stop valve is hydrogen or hydrogen+hydrogen sulfide etc., and high pressure hydrogen has extremely strong penetrability, leak again thereby can cause producing between valve body 8 and the metallic packing ring 10 a spot of medium (hydrogen, hydrogen sulfide etc.).
The model utility content
The purpose of the utility model is the deficiency that exists to existing seal ring, provides a kind of high pressure of favorable sealing property to face hydrogen stop valve combined sealing ring, can solve the dielectric leakage problem that existing seal ring is difficult to avoid, and reaches zero leakage.
In order to solve above technical problem; The utility model provides a kind of high pressure to face hydrogen stop valve combined sealing ring; This high pressure faces hydrogen stop valve combined sealing ring between valve gap and valve body; The secondary seal ring of a master metal seal ring and a nonmetal flexible graphite material is set, constitutes combined sealing ring.
The superior effect of the utility model:
1) small leakage that stops main seal ring to produce with the secondary seal ring that is easy to reach seal pressure reaches zero leakage.
Description of drawings
Fig. 1 is the structural representation that existing high pressure faces hydrogen stop valve seal ring;
Fig. 2 is the structural representation that the high pressure of the utility model faces hydrogen stop valve combined sealing ring;
Label declaration among the figure:
1-valve gap; 2-spring;
3-bolt; 4-support bracket bolt;
5-support; 6-support plate;
7-pendant collet; 8-valve body;
9-gasket ring; 10-metallic packing ring;
101-master metal seal ring; 102-flexible graphite secondary seal ring.
Embodiment
Below in conjunction with Fig. 2 and specific embodiment the utility model is at length explained.
Before boosting, the bolt 3 of screwing earlier rises valve gap 1, make between valve gap 1 and the master metal seal ring 101 and valve body 8 and flexible graphite secondary seal ring 102, master metal seal ring 101 between formation initial sealing condition---the pretension specific pressure on the sealing surface.When pressure medium rises; Valve gap 1 is moved up by the pressure medium effect; Seal pressure between valve gap 1 and master metal seal ring 101 and valve body 8 and flexible graphite secondary seal ring 102, the master metal seal ring 101 increases with the increase of pressure gradually; Because of pendant collet 7 and gasket ring 9 have limited flexible graphite secondary seal ring 102, master metal seal ring 101 moves up; When the pressure medium that rises reaches certain value, make master metal seal ring 101 produce plastic deformation, reach sealing thereby make between valve body 8 and the valve gap 1.
Flexible graphite secondary seal ring 102 is nonmetallic material, and required seal pressure is very little, when the bolt 3 of screwing forms the initial sealing condition, has just reached sealing.When the pressure medium rising continued seal pressure is provided, flexible graphite secondary seal ring 102 further was compressed distortion, had filled up the leakage space of master metal seal ring 101 trace, had eliminated the small leakage that master metal seal ring 101 produces, and reached zero leakage.
Claims (1)
1. a high pressure faces hydrogen stop valve combined sealing ring; It is characterized in that: described high pressure faces hydrogen stop valve combined sealing ring between valve gap and valve body; The secondary seal ring of a master metal seal ring and a nonmetal flexible graphite material is set, constitutes combined sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205073087U CN202349207U (en) | 2011-12-08 | 2011-12-08 | Combined sealing ring for high-pressure hydrogen stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205073087U CN202349207U (en) | 2011-12-08 | 2011-12-08 | Combined sealing ring for high-pressure hydrogen stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202349207U true CN202349207U (en) | 2012-07-25 |
Family
ID=46538214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205073087U Expired - Fee Related CN202349207U (en) | 2011-12-08 | 2011-12-08 | Combined sealing ring for high-pressure hydrogen stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202349207U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498935A (en) * | 2013-09-16 | 2014-01-08 | 宁波天生密封件有限公司 | Wedged self-tightening sealing piece of manhole door of pressure stabilizer |
| CN103822870A (en) * | 2014-03-14 | 2014-05-28 | 沈阳慧宇真空技术有限公司 | Vacuum seal structure used in irradiation corrosion synergistic effect device and provided with replaceable metal film |
| CN105358889A (en) * | 2013-04-24 | 2016-02-24 | 通用电气石油和天然气英国有限公司 | Seal ring element |
| CN108361395A (en) * | 2018-04-23 | 2018-08-03 | 大连大高阀门股份有限公司 | Major accident unloads pressure cutoff valve |
| CN108361399A (en) * | 2018-04-23 | 2018-08-03 | 大连大高阀门股份有限公司 | Major accident release gate valve |
-
2011
- 2011-12-08 CN CN2011205073087U patent/CN202349207U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105358889A (en) * | 2013-04-24 | 2016-02-24 | 通用电气石油和天然气英国有限公司 | Seal ring element |
| US10364925B2 (en) | 2013-04-24 | 2019-07-30 | Ge Oil & Gas Uk Limited | Seal ring element |
| CN103498935A (en) * | 2013-09-16 | 2014-01-08 | 宁波天生密封件有限公司 | Wedged self-tightening sealing piece of manhole door of pressure stabilizer |
| CN103822870A (en) * | 2014-03-14 | 2014-05-28 | 沈阳慧宇真空技术有限公司 | Vacuum seal structure used in irradiation corrosion synergistic effect device and provided with replaceable metal film |
| CN108361395A (en) * | 2018-04-23 | 2018-08-03 | 大连大高阀门股份有限公司 | Major accident unloads pressure cutoff valve |
| CN108361399A (en) * | 2018-04-23 | 2018-08-03 | 大连大高阀门股份有限公司 | Major accident release gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201416 Shanghai city Fengxian District Zhelin Town Village Road No. 199 Patentee after: SHK VALVE GROUP CO., LTD. Address before: 201416 Shanghai city Fengxian District Zhelin Town Village Road No. 199 Patentee before: Shanghai SHK Valve Group Co., Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20170419 Address after: 201416 Shanghai city Fengxian District Zhelin Town Village Road No. 138 building 4 Patentee after: Shanghai Shengweixi Valve Co., Ltd. Address before: 201416 Shanghai city Fengxian District Zhelin Town Village Road No. 199 Patentee before: SHK VALVE GROUP CO., LTD. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181008 Address after: 201416 199 North Village Road, Zhelin Town, Fengxian District, Shanghai Patentee after: SHK VALVE GROUP CO., LTD. Address before: 201416 4 4 North Village Road, Zhelin Town, Fengxian District, Shanghai Patentee before: Shanghai Shengweixi Valve Co., Ltd. |
|
| PP01 | Preservation of patent right |
Effective date of registration: 20190821 Granted publication date: 20120725 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20211208 Granted publication date: 20120725 |
|
| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20201208 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |