CN201439825U - Special fireproof alloy cock valve plug valve - Google Patents
Special fireproof alloy cock valve plug valve Download PDFInfo
- Publication number
- CN201439825U CN201439825U CN2009201901368U CN200920190136U CN201439825U CN 201439825 U CN201439825 U CN 201439825U CN 2009201901368 U CN2009201901368 U CN 2009201901368U CN 200920190136 U CN200920190136 U CN 200920190136U CN 201439825 U CN201439825 U CN 201439825U
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- valve
- seal
- fire
- valve body
- cushion
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- Expired - Fee Related
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Abstract
A special fireproof alloy plug valve comprises a valve body, a valve cover, a valve rod and a plug, wherein the valve body is internally provided with a seal bushing which is in motive seal fit with the outer wall of the plug, a seal cushion, a metal protection cushion and a metal pressing sleeve are sequentially arranged between the upper end of the plug and the valve cover, a wedge-shaped fireproof seal cushion is arranged between the inner wall of the metal pressing sleeve and the valve rod, the seal cushion and the outer end of the metal protection cushion are clamped between the valve body and the valve cover, and the outermost periphery of the seal cushion is also provided with a fireproof seal ring to form a multiple-seal fireproof structure. The utility model adopts the multiple-seal fireproof structure, so when the seal cushion becomes useless caused by the fire inside the valve, the medium can not leak from the connecting gap among the valve body, the valve cover and the valve rod because the metal protection cushion can isolate flame and the fireproof seal cushion on the two ends can effectively seal under the high temperature fire, thereby, the sealing property is very reliable and the production safety is greatly improved.
Description
Technical field: the utility model relates to a kind of stopcock, particularly uses the stopcock of special media.
Background technique: often use special media such as deep-etching, inflammable, severe toxicity at industrial fields such as chemical industry, pharmacy, the stopcock of using in its process pipe need adopt as special alloy manufacturings such as Hastelloy, zirconium material, titanium materials.The stopcock of this use special media is very high for seal request, must all will prevent dielectric leakage in all cases.Though present special alloy stopcock also can prevent to leak in operating modes such as high temperature, high pressure, but if the situation of medium catching fire, because the sealing gasket in the valve adopts flexible plastic etc. substantially, the sealing of burning back was lost efficacy easily, make dielectric leakage influence safety, and the intensity of a fire can be burnt valve and be spread along process pipe, increases loss, and Safety performance can't satisfy the frpf requirement.
Summary of the invention: at the deficiencies in the prior art, the utility model provides a kind of fire-proof special alloy stopcock that also can prevent dielectric leakage under situation on fire.
The utility model comprises valve body, valve gap, valve rod and cock; the outer wall motive sealing that is provided with seal cartridge and cock in the valve body cooperates; between cock upper end and valve gap, be provided with sealing gasket, metal coating pad and metal gland successively; then be provided with the wedge type fire seal between metal gland inwall and the valve rod; the outer end of sealing gasket and metal coating pad is clipped between valve body and the valve gap; and also be provided with the fire proof seal circle at the sealing gasket most peripheral, constitute multi-sealed fire resisting construction.
The utility model adopts multi-sealed fire resisting construction; after the valve internal catching fire lost efficacy sealing gasket; because the metal coating pad can be isolated flame; and the fire seal at two ends also can effectively seal under the situation of high-temp combustion; medium can't leak from the connection space between valve body, valve gap or the valve rod; sealability is very reliable, has improved the Security of producing greatly.
Further specify the utility model below in conjunction with drawings and Examples.
Description of drawings: Fig. 1 is embodiment's a main structure schematic representation;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the I portion enlarged view of Fig. 1;
Fig. 4 is the II portion enlarged view of Fig. 1;
Fig. 5 is the structural representation that Fig. 1 falls in back cock on fire;
Fig. 6 is the B-B sectional view of Fig. 5.
Embodiment: as shown in Figure 1 to Figure 3, the Hastelloy manufacturing is adopted in valve body 1, cock 3, and the outer wall motive sealing that is provided with seal cartridge 5 and cock 3 in the valve body 1 cooperates.Between cock 3 upper ends and valve gap 2, be provided with sealing gasket 6, metal coating pad 7 and metal gland 8 successively, then be provided with wedge type fire seal 9 between metal gland 8 inwalls and the valve rod 4.The outer end of sealing gasket 6 and metal coating pad 7 is clipped between valve body 1 and the valve gap 2, and also is provided with fire proof seal circle 10 at sealing gasket 6 most peripherals, constitutes multi-sealed fire resisting construction.Seal cartridge 5 and sealing gasket 6 general RPTFE, PTFE, the PFA etc. of adopting, wedge type fire seal 9 and the fire proof seal circle 10 general Expanded graphites that adopt.
After catching fire lost efficacy sealing gasket 6 in valve; because metal coating pad 7 can be isolated flame; and the wedge type fire seal 9 and the fire proof seal circle 10 at two ends also can effectively seal under the situation of high-temp combustion, and medium can't leak from the connection space between valve body 1, valve gap 2 or the valve rod 4.Between valve gap 2 and metal gland 8, can be provided with stage clip 15, constitute loading sealing configuration automatically, when pressure, temperature variation or sealing gasket 6 burn, can pass through stage clip 15 automatic on-load pressures, make sealing more reliable.
Present embodiment in valve body 1 and latus rectum mouth 11 places of cock 3 outer wall correspondences also be provided with the sealing counter-base 12, constitute the fire prevention partition-type structures, after seal cartridge 5 softening scaling loss, the gap occurs between cock 3 and the valve body 1 like this, cock 3 can be fallen by nature, as shown in Figure 5 and Figure 6, the outer wall of cock 3 can contact with sealing counter-base 12, and cooperates at the pressure medium lower seal, prevents that the intensity of a fire from spreading by valve, the loss of minimizing equipment, the fireproof performance of whole valve meets the API607 fire-protection standard.As shown in Figure 4, present embodiment cooperates by spring 13 and steel ball 14 Elastic Contact between valve rod 4 tops and valve gap 2, constitutes the static derived type structure, can prevent that like this electrostatic accumulation from causing the medium burning, and Security is better.
Claims (5)
1. fire-proof special alloy stopcock; comprise valve body; valve gap; valve rod and cock; the outer wall motive sealing that is provided with seal cartridge and cock in the valve body cooperates; it is characterized by: between cock (3) upper end and valve gap (2), be provided with sealing gasket (6) successively; metal coating pad (7) and metal gland (8); then be provided with wedge type fire seal (9) between metal gland (8) inwall and the valve rod (4); the outer end of sealing gasket (6) and metal coating pad (7) is clipped between valve body (1) and the valve gap (2); and also be provided with fire proof seal circle (10) at sealing gasket (6) most peripheral, constitute multi-sealed fire resisting construction.
2. fire-proof special alloy stopcock according to claim 1 is characterized by: in valve body (1) and the latus rectum mouth (11) of cock (3) outer wall correspondence locate also to be provided with sealing counter-base (12), constitute the fire prevention partition-type structures.
3. fire-proof special alloy stopcock according to claim 1 and 2 is characterized by: cooperate by spring (13) and steel ball (14) Elastic Contact between valve rod (4) top and valve gap (2), constitute the static derived type structure.
4. fire-proof special alloy stopcock according to claim 1 and 2 is characterized by: be provided with stage clip (15) between valve gap (2) and metal gland (8), constitute loading sealing configuration automatically.
5. fire-proof special alloy stopcock according to claim 3 is characterized by: be provided with stage clip (15) between valve gap (2) and metal gland (8), constitute loading sealing configuration automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201901368U CN201439825U (en) | 2009-07-23 | 2009-07-23 | Special fireproof alloy cock valve plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201901368U CN201439825U (en) | 2009-07-23 | 2009-07-23 | Special fireproof alloy cock valve plug valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201439825U true CN201439825U (en) | 2010-04-21 |
Family
ID=42544496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201901368U Expired - Fee Related CN201439825U (en) | 2009-07-23 | 2009-07-23 | Special fireproof alloy cock valve plug valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201439825U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360955A (en) * | 2017-12-29 | 2018-08-03 | 合肥候鸟新型材料有限公司 | A kind of fireproof door and preparation method thereof |
| CN112696504A (en) * | 2020-12-21 | 2021-04-23 | 浙江伯特利科技股份有限公司 | Cone-shaped valve without middle cavity gap |
| CN113324061A (en) * | 2021-03-22 | 2021-08-31 | 浙江东信阀门有限公司 | Automatic compensation plug valve |
-
2009
- 2009-07-23 CN CN2009201901368U patent/CN201439825U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360955A (en) * | 2017-12-29 | 2018-08-03 | 合肥候鸟新型材料有限公司 | A kind of fireproof door and preparation method thereof |
| CN112696504A (en) * | 2020-12-21 | 2021-04-23 | 浙江伯特利科技股份有限公司 | Cone-shaped valve without middle cavity gap |
| CN113324061A (en) * | 2021-03-22 | 2021-08-31 | 浙江东信阀门有限公司 | Automatic compensation plug 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 |
Owner name: WEIDOULI VALVES CO., LTD. Free format text: FORMER NAME: ZHEJIANG WEIDULI VALVE MANUFACTURE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 325024 Yongxing Industrial Zone, Wenzhou, Zhejiang Province West Fukang Road Patentee after: WEIDOULI VALVES MANUFACTURING CO., LTD. Address before: 325024 Yongxing Industrial Zone, Wenzhou, Zhejiang Province West Fukang Road Patentee before: Weiduli Valve Mfg. Co., Ltd., Zhejiang |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100421 Termination date: 20140723 |
|
| EXPY | Termination of patent right or utility model |