CN201068998Y - Gas gate valve possessing composite soft sealing structure - Google Patents
Gas gate valve possessing composite soft sealing structure Download PDFInfo
- Publication number
- CN201068998Y CN201068998Y CNU2007201019636U CN200720101963U CN201068998Y CN 201068998 Y CN201068998 Y CN 201068998Y CN U2007201019636 U CNU2007201019636 U CN U2007201019636U CN 200720101963 U CN200720101963 U CN 200720101963U CN 201068998 Y CN201068998 Y CN 201068998Y
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- CN
- China
- Prior art keywords
- gate valve
- pad
- gas
- valve
- gate
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- Expired - Fee Related
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Abstract
The utility model relates to a gate valve for a gas pipe, specifically a gas gate valve with a compound soft seal structure for solving the problems of the prior gas gate valve that the fluororubber soft seal between the seal surface of a gate plate and the seal surface of a stainless valve seat can influence the safety and the reliability of the gate valve and has short service life. The utility model comprises a gate plate, a stainless valve seat, a poly (tetrafluoroethylene) pad inlaid on the seal surface of the gate plate and with a groove formed thereon, and a fluororubber pad fixedly embedded in the groove. A compound soft seal structure arranged on the gate valve is composed of the soft fluororubber pad and the poly (tetrafluoroethylene) pad with high hardness and good anti-aging performance, thereby improving the abrasion resistance and the anti-aging performance of the seal structure and satisfying the requirement of a multi-hermetic partition gate valve on the seal structure free of maintenance and having long service life (longer than 20 years) and zero leakage. The utility model has simple and reasonable structure and good use effect, and can satisfy the process requirement of the multi-hermetic partition gate valve in large-scale steel and smelting industries.
Description
Technical field
The utility model relates to the gate valve that is used for gas pipeline, is specially a kind of Gas-combustion valve with composite soft sealing structure.
Background technique
Gas-combustion valve mainly is installed on the main gas pipeline of blast furnace one side of large-scale iron and steel, smelting enterprise, be used to control the recycling of blast furnace gas, coke-stove gas, reach and avoid the purpose that the coal gas discharging is out of control, avoid befouling environment, also be used to control simultaneously gas distribution.Maximization and the growth of operation period in furnace life along with blast furnace, for avoiding gas distribution reason blowing out etc. so that produce and be interrupted, require the Gas-combustion valve and the same life-span of stove of assembling, before gate valve is installed in blower simultaneously, during the maintenance blower, gate valve is made the maintenance blind plate and is used, requirement has gas defence, keep away combustion, effects such as blast protection, require gate valve during use, all can accomplish cocksure " zero " seepage, reach the requirement of industrial operating mode, for this reason, gate valve adopts water or inert gas to seal, play the primary seal function, guarantee coal gas medium zero seepage, the flashboard sealing surface in the gate valve and the effect of the soft sealing structure between the stainless steel valve seat sealing surface are to avoid water or inert gas in the gate valve internal leakage, play the auxiliary seal function.
When the gate valve complete shut-down, rely on flashboard sealing surface and stainless steel valve seat sealing surface tightly to be close to, make water or inert gas in the cavity keep rated pressure, the reliable piped gas that cuts off leaks, trickle slit is arranged between sealing surface of the discharge gate, cause water or inert gas to leak in a large number, pressure is out of control, will cause combustion gas dielectric leakages such as coal gas, for guaranteeing tightly to be close between flashboard sealing surface and the stainless steel valve seat sealing surface, people generally are provided with the fluorine rubber pad on the flashboard sealing surface, utilize its hardness less, characteristics such as matter is soft, play the anti-leak effect, but because its wear resistance, the anti-aging poor-performing that waits, the long-term use, carry out water injection test again, the serious leakage often occur, influence Security and reliability that gate valve " zero seepage " requires, short being difficult to and the same life-span of blast furnace in its life-span.
Summary of the invention
The utility model only is the fluorine rubber soft seal in order to solve that existing Gas-combustion valve exists between flashboard sealing surface and the stainless steel valve seat sealing surface, influence problems such as Security, reliability and working life that gate valve uses is short, a kind of Gas-combustion valve with composite soft sealing structure is provided.
The utility model is to adopt following technological scheme to realize: the Gas-combustion valve with composite soft sealing structure, comprise flashboard, stainless steel valve seat, be inlaid with the teflon pad on the flashboard sealing surface, have groove on the teflon pad, the embedded intrinsic fluorine rubber pad of groove.Adopt composite structure, being about to teflon pad and the fluorine rubber machine of being lined with combines, the fluorine rubber pad places the sealing configuration top layer, shore hardness is 50-70, and its matter is soft, and good sealing effect is arranged, realize soft seal, deep layer adopts the teflon pad, and shore hardness is 110-130, and higher hardness is arranged, wear resistance is higher, good anti-aging function is arranged again, improved the sealability and the wear-resisting wiping of flashboard and valve seat, ageing-resistant performance, satisfied many sealing partition gate valves are non-maintaining to sealing configuration, life-span is longer than the requirement in 20 years, through after the water injection test, there is not any leakage, safe and reliable, really realized the purpose of " zero seepage ".
Described groove is swallow-tail form, and fluorine rubber pulvilliform shape and groove shapes match, and plays good fixation.
Described teflon bed hedgehopping goes out flashboard sealing surface 3-4mm, and the fluorine rubber bed hedgehopping goes out teflon pad 1.5-3mm.
Compared with prior art, the utility model is provided with the composite soft sealing structure on gate valve, fluorine rubber pad and hardness by softness are higher, aging quality resistance teflon pad preferably combines, be embedded on the metal flashboard, good seal performance not only, and improved the wear-resisting scrape along ageing-resistant performance of sealing configuration greatly, satisfied many sealing partition gate valves are non-maintaining to sealing configuration, life-span is longer than the requirement of 20 years (with the same life-span of blast furnace) and zero seepage, simple in structure, rationally, processing and fabricating is easy, using effect is good, greatly prolong the partition life-span function of many sealings partition gate valves, satisfied large-scale iron and steel, smelting industry cuts off the technological requirement of gate valve to many sealings.
Description of drawings
Fig. 1 is a user mode schematic representation of the present utility model
Fig. 2 is the schematic representation of composite soft sealing structure among Fig. 1
Among the figure: 1-flashboard 2-stainless steel valve seat 3-teflon pad 4-groove 5-fluorine rubber pad 6-Electric actuator 7-valve rod 8-valve gap 9-valve body
Embodiment
Gas-combustion valve with composite soft sealing structure, comprise flashboard 1, stainless steel valve seat 2, be inlaid with teflon pad 3 on flashboard 1 sealing surface, have groove 4 on the teflon pad 3, groove 4 embedded intrinsic fluorine rubber pads 5, teflon pad 3 exceeds flashboard sealing surface 3-4mm, and fluorine rubber pad 5 exceeds teflon pad 1.5-3mm, described groove 4 is swallow-tail form, and fluorine rubber pad 5 shapes and groove 4 shapes match.
When Electric actuator 6 closes flashboard landing by valve rod 7, flashboard 1 sealing surface and stainless steel valve seat 2 sealing surfaces tight connecting under the effect of composite soft sealing structure with press water or the inert gas seal inner chamber at valve, reach the purpose of partition piped gas medium.
Claims (3)
1. Gas-combustion valve with composite soft sealing structure, comprise flashboard (1), stainless steel valve seat (2), it is characterized in that being inlaid with teflon pad (3) on flashboard (1) sealing surface, have groove (4) on the teflon pad (3), the embedded intrinsic fluorine rubber pad of groove (4) (5).
2. the Gas-combustion valve with composite soft sealing structure according to claim 1 is characterized in that described groove (4) is swallow-tail form, and fluorine rubber pad (5) shape and groove (4) shape match.
3. the Gas-combustion valve with composite soft sealing structure according to claim 1 and 2 is characterized in that described teflon pad (3) exceeds flashboard sealing surface 3-4mm, and fluorine rubber pad (5) exceeds teflon pad 1.5-3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201019636U CN201068998Y (en) | 2007-07-14 | 2007-07-14 | Gas gate valve possessing composite soft sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201019636U CN201068998Y (en) | 2007-07-14 | 2007-07-14 | Gas gate valve possessing composite soft sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201068998Y true CN201068998Y (en) | 2008-06-04 |
Family
ID=39490384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201019636U Expired - Fee Related CN201068998Y (en) | 2007-07-14 | 2007-07-14 | Gas gate valve possessing composite soft sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201068998Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405907A (en) * | 2014-12-08 | 2015-03-11 | 江苏明江阀业有限公司 | Valve seat of double-clip type butterfly valve for coal cinder pipeline |
| CN105042175A (en) * | 2015-07-03 | 2015-11-11 | 南通国电电站阀门有限公司 | Compact expansion sewage drain soft and hard dual-seal parallel gate valve |
-
2007
- 2007-07-14 CN CNU2007201019636U patent/CN201068998Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405907A (en) * | 2014-12-08 | 2015-03-11 | 江苏明江阀业有限公司 | Valve seat of double-clip type butterfly valve for coal cinder pipeline |
| CN105042175A (en) * | 2015-07-03 | 2015-11-11 | 南通国电电站阀门有限公司 | Compact expansion sewage drain soft and hard dual-seal parallel gate valve |
| CN105042175B (en) * | 2015-07-03 | 2018-08-31 | 南通国电电站阀门股份有限公司 | Compact expands the soft or hard double containment parallel gate valve of pollution discharge type |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080604 Termination date: 20130714 |