CN109827005A - A kind of cryogenic valve fugacity composite filling structure and encapsulating method - Google Patents
A kind of cryogenic valve fugacity composite filling structure and encapsulating method Download PDFInfo
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- CN109827005A CN109827005A CN201910250693.2A CN201910250693A CN109827005A CN 109827005 A CN109827005 A CN 109827005A CN 201910250693 A CN201910250693 A CN 201910250693A CN 109827005 A CN109827005 A CN 109827005A
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- valve
- resealing
- filler
- fugacity
- filling structure
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- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims description 10
- 239000000945 filler Substances 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 claims abstract description 16
- 239000005023 polychlorotrifluoroethylene (PCTFE) polymer Substances 0.000 claims abstract description 16
- 238000004146 energy storage Methods 0.000 claims abstract description 15
- 239000010425 asbestos Substances 0.000 claims abstract description 11
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 11
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 10
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 10
- 238000002386 leaching Methods 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims description 7
- 238000009825 accumulation Methods 0.000 claims 1
- 238000005299 abrasion Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Details Of Valves (AREA)
Abstract
A kind of cryogenic valve fugacity composite filling structure, including valve deck, valve rod are formed with clearance space, are successively arranged the first resealing, the second resealing in clearance space from the bottom up between the valve rod and the inner cavity of valve deck；First resealing is spring energy-storage sealing ring, and spring energy-storage sealing ring is mounted on first of sleeveless jacket at valve deck；Second resealing includes the V-type PCTFE filler of the upper half and the leaching asbestos PTFE filler of lower half.A kind of cryogenic valve fugacity composite filling structure provided by the invention, good seal performance, security level are high.
Description
Technical field
The present invention relates to cryogenic valve, especially a kind of cryogenic valve fugacity composite filling structure and sealing side
Method.
Background technique
With the continuous development of science and technology and chemical industry, Subzero valve is also increasingly wider in the application of low temperature industry
It is general, also advance both at home and abroad constantly for the research work of Subzero valve at present, to meet the quick hair of modern industrialization
Exhibition.Production domesticization policy is carried out in substantial industrial equipment and key device by country now, and many low temperature projects are for domestic low temperature
The demand of valve just rises year by year, so the requirement to its security performance is also higher and higher.This requires Subzero valves to design
Airtight and watertight padding structure is carried out special designing and carries out special selection for the material of airtight and watertight padding in the process to expire
The requirement of sufficient Subzero valve leakproofness.The safe operation that just can guarantee system in this way, meet Subzero valve function, reliability and
The working condition requirement of security performance etc..It also can be reduced pollution to environment and harm and the injury to the person simultaneously, reduce
A possibility that peril occurs.Therefore very high requirement is proposed to the leakproofness of Subzero valve.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of cryogenic valve fugacity composite filling structure and sealings
Method, good seal performance, security level are high, overcome the problems, such as existing cryogenic valve gland leakage.
In order to solve the above technical problems, the technical scheme adopted by the invention is that:
A kind of cryogenic valve fugacity composite filling structure, including valve deck, valve rod, shape between the valve rod and the inner cavity of valve deck
At there is clearance space, the first resealing, the second resealing are successively arranged in clearance space from the bottom up；First resealing is
Spring energy-storage sealing ring, spring energy-storage sealing ring are mounted on first of sleeveless jacket at valve deck；Second resealing includes upper
The V-type PCTFE filler of half portion and the leaching asbestos PTFE filler of lower half.
T-type guide sleeve, V-type PCTFE filler top are equipped between the spring energy-storage sealing ring and leaching asbestos PTFE filler
Equipped with filler pressing sleeve.
The filler pressing sleeve upper end is successively arranged the first disc spring, hold-down grid, wherein hold-down grid by fastening assembly with
Valve deck connection.
The fastening assembly includes stud, nut, and the second disc spring is cased between nut and hold-down grid on stud.
A kind of cryogenic valve encapsulating method, it is characterised in that: clearance space is set between valve deck, valve rod, and in valve
Twice sleeveless jacket is set on cover cavity side wall, the first resealing is set at first of sleeveless jacket, second sleeveless jacket goes out that the second weight is arranged close
Envelope；Wherein, the first resealing uses spring energy-storage sealing ring, V-type PCTFE filler and lower part of second resealing using the upper half
Leaching asbestos PTFE filler combination structure is sealed.
The spring energy-storage sealing ring is the innerspring high-performance sealed part of PCTFE collet.
A kind of cryogenic valve fugacity composite filling structure of the present invention, has following technical effect that
1), spring energy-storage sealing ring uses the innerspring high-performance sealed part of PCTFE collet, can be used for most of chemistry
A variety of occasions such as fluid, the dynamic sealing of solvent and hydraulic oil, static seal, single-acting and double acting.The elasticity that spring provides is mended
It repays the slight eccentricity that can overcome metal combination face and seals the abrasion of lip, and persistently possess expected sealing performance.
PCTFE material has the ability of excellent barrier gas, has good chemical stability and heat resistance, is suitble to -196 DEG C low
Warm operating condition is used for a long time.
2), using upper half installation V-type PCTFE filler+lower half installation impregnation PCTFE asbestos packing composite structure, make
For the second resealing of valve, which is suitable for the worst cold cases such as inflammable medium, density is small.
3), increase by one group of first disc spring between hold-down grid and filler pressing sleeve, after filler abrasion, due to the work of disc spring
Filler is firmly compressed again, makes its sealing.
4), increase by one group of second disc spring under fastener nut, the loose phenomenon of nut can be prevented, to make the peace of valve
Full property and practicability are more protected.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples:
Fig. 1 is cross-sectional view of the invention.
In figure: valve deck 1, spring energy-storage sealing ring 2, T-type guide sleeve 3, leaching asbestos PTFE filler 4, V-type PCTFE filler 5,
Filler pressing sleeve 6, the first disc spring 7, hold-down grid 8, the second disc spring 9, stud 10, nut 11, valve rod 12.
Specific embodiment
As shown in Figure 1, a kind of cryogenic valve fugacity composite filling structure, including valve deck 1, valve rod 12, the valve rod
Clearance space is formed between 12 and the side wall of 1 inner cavity of valve deck, spring energy-storage sealing ring 2, T-type guide sleeve 3, leaching asbestos PTFE are filled out
Material 4, V-type PCTFE filler 5, filler pressing sleeve 6, disc spring 7, hold-down grid 8 sequentially pass through valve rod 12, and clearance space is filled out in completion
Plug blocks.It is affixed integral by stud 10, nut 11 between hold-down grid 8 and valve deck 1.
Clearance space is arranged in a kind of cryogenic valve encapsulating method between valve deck 1, valve rod 12, and in 1 lumen side of valve deck
Twice sleeveless jacket is set on wall, the first resealing is set at first of sleeveless jacket, second sleeveless jacket goes out the second resealing is arranged；Wherein,
First resealing uses spring energy-storage sealing ring 2, and the second resealing soaks asbestos using the V-type PCTFE filler 5 of the upper half and lower part
4 composite structure of PTFE filler is sealed.After filler abrasion, since the active force of the first disc spring compresses filler again, make it
Sealing.
Claims (6)
1. a kind of cryogenic valve fugacity composite filling structure, including valve deck (1), valve rod (12), it is characterised in that: the valve
Clearance space is formed between bar (12) and the inner cavity of valve deck (1), be successively arranged from the bottom up in clearance space the first resealing,
Second resealing；First resealing is spring energy-storage sealing ring (2), and spring energy-storage sealing ring (2) is mounted at valve deck (1)
First of sleeveless jacket on；Second resealing includes the V-type PCTFE filler (5) of the upper half and the leaching asbestos PTFE of lower half
Filler (4).
2. a kind of cryogenic valve fugacity composite filling structure according to claim 1, it is characterised in that: the spring
T-type guide sleeve (3) are equipped between accumulation of energy sealing ring (2) and leaching asbestos PTFE filler (4), V-type PCTFE filler (5) top is equipped with
Filler pressing sleeve (6).
3. a kind of cryogenic valve fugacity composite filling structure according to claim 2, it is characterised in that: the filler
Pressing sleeve (6) upper end is successively arranged the first disc spring (7), hold-down grid (8), wherein hold-down grid (8) passes through fastening assembly and valve deck
(1) it connects.
4. a kind of cryogenic valve fugacity composite filling structure according to claim 3, it is characterised in that: the fastening
Component includes stud (10), nut (11), is cased with the second disc spring between nut (11) and hold-down grid (8) on stud (10)
(9).
5. a kind of cryogenic valve fugacity composite filling structure described in any one of -4 is sealed according to claim 1
Method, it is characterised in that: clearance space is set between valve deck (1), valve rod (12), and is set on valve deck (1) intracavity sidewall
Twice sleeveless jacket is set, the first resealing is set at first of sleeveless jacket, second sleeveless jacket goes out the second resealing is arranged；Wherein, the first weight
Sealing uses spring energy-storage sealing ring (2), and the second resealing soaks asbestos using the V-type PCTFE filler (5) of the upper half and lower part
PTFE filler (4) composite structure is sealed.
6. a kind of cryogenic valve encapsulating method according to claim 5, it is characterised in that: the spring energy-storage sealing ring
It (2) is the innerspring high-performance sealed part of PCTFE collet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910250693.2A CN109827005A (en) | 2019-03-29 | 2019-03-29 | A kind of cryogenic valve fugacity composite filling structure and encapsulating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910250693.2A CN109827005A (en) | 2019-03-29 | 2019-03-29 | A kind of cryogenic valve fugacity composite filling structure and encapsulating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109827005A true CN109827005A (en) | 2019-05-31 |
Family
ID=66874552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910250693.2A Pending CN109827005A (en) | 2019-03-29 | 2019-03-29 | A kind of cryogenic valve fugacity composite filling structure and encapsulating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109827005A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197059A (en) * | 2020-11-06 | 2021-01-08 | 西南化工研究设计院有限公司 | Multiple composite seal prevents valve rod leakage formula valve rod filler structure |
| CN112901850A (en) * | 2021-03-29 | 2021-06-04 | 佛山市达曼森密封科技有限公司 | Combined valve rod sealing structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2184620A1 (en) * | 1994-03-02 | 1995-09-08 | Michel K. Lovell | Low friction packing |
| CN104329462A (en) * | 2014-10-30 | 2015-02-04 | 重庆山能仪表有限公司 | Low-dispassion packing seal structure |
| CN204879013U (en) * | 2015-07-17 | 2015-12-16 | 张家港富瑞特种装备股份有限公司 | Low temperature pneumatic ball valve packing structure |
| CN108006314A (en) * | 2017-12-01 | 2018-05-08 | 中国寰球工程有限公司 | Cryogenic ball valve fugacity combined stuffing structure |
| CN207687442U (en) * | 2017-12-29 | 2018-08-03 | 徐州阿卡控制阀门有限公司 | Ultralow temperature sylphon seal tiny flow quantity angle valve with insulation construction |
| CN209688240U (en) * | 2019-03-29 | 2019-11-26 | 湖北泰和石化设备有限公司 | A kind of cryogenic valve fugacity composite filling structure |
-
2019
- 2019-03-29 CN CN201910250693.2A patent/CN109827005A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2184620A1 (en) * | 1994-03-02 | 1995-09-08 | Michel K. Lovell | Low friction packing |
| CN104329462A (en) * | 2014-10-30 | 2015-02-04 | 重庆山能仪表有限公司 | Low-dispassion packing seal structure |
| CN204879013U (en) * | 2015-07-17 | 2015-12-16 | 张家港富瑞特种装备股份有限公司 | Low temperature pneumatic ball valve packing structure |
| CN108006314A (en) * | 2017-12-01 | 2018-05-08 | 中国寰球工程有限公司 | Cryogenic ball valve fugacity combined stuffing structure |
| CN207687442U (en) * | 2017-12-29 | 2018-08-03 | 徐州阿卡控制阀门有限公司 | Ultralow temperature sylphon seal tiny flow quantity angle valve with insulation construction |
| CN209688240U (en) * | 2019-03-29 | 2019-11-26 | 湖北泰和石化设备有限公司 | A kind of cryogenic valve fugacity composite filling structure |
Non-Patent Citations (2)
| Title |
|---|
| 任杰、黄岳元: "氟复合材料应用技术", 31 January 1997, 科学技术文献出版社, pages: 16 - 18 * |
| 刘后桂: "密封技术", 31 December 1981, 湖南科学技术出版社, pages: 319 - 326 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197059A (en) * | 2020-11-06 | 2021-01-08 | 西南化工研究设计院有限公司 | Multiple composite seal prevents valve rod leakage formula valve rod filler structure |
| CN112901850A (en) * | 2021-03-29 | 2021-06-04 | 佛山市达曼森密封科技有限公司 | Combined valve rod sealing structure |
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