CN102359609A - Metal valve seat sealing structure for cryogenic butterfly valve under ultralow temperature working condition - Google Patents
Metal valve seat sealing structure for cryogenic butterfly valve under ultralow temperature working condition Download PDFInfo
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- CN102359609A CN102359609A CN2011103245492A CN201110324549A CN102359609A CN 102359609 A CN102359609 A CN 102359609A CN 2011103245492 A CN2011103245492 A CN 2011103245492A CN 201110324549 A CN201110324549 A CN 201110324549A CN 102359609 A CN102359609 A CN 102359609A
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- ultralow temperature
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Abstract
The invention relates to a metal valve seat sealing structure for a cryogenic butterfly valve under an ultralow temperature working condition. The structure comprises a valve body, a valve plate, and a valve cover arranged on the valve body, wherein a transmission shaft is arranged in a shaft hole of the valve body; the valve plate is arranged in an inner hole of the valve body; and a retainer is arranged between the valve plate and the valve body. The structure is characterized in that: an inner side O-ring and an outer side O-ring are fixed between the retainer and the valve body; the inner side O-ring is pressed on the valve plate by a positioning ring; each of the outer side O-ring and the inner side O-ring comprises an outer metal layer and a spring coated in the metal layer; the inner side O-ring is in seamless connection with the outer side O-ring; the positioning ring is pressed on the valve body through a pressing ring; and the spring is made of a nickel-chromium alloy material. The structure still can keep high elasticity in a -254 DEG C ultralow temperature environment; the inner side O-ring is in seamless connection with the outer side O-ring, so that a medium is prevented from leaking from the positioning ring; and the service life of the valve is effectively prolonged, maintenance cost is reduced, and economic benefits are improved.
Description
Technical field
The present invention relates to a kind of valve base sealing structure, the deep cooling butterfly valve under especially a kind of ultralow temperature operating mode is used the metal seat valve sealing configuration.
Background technique
Along with economic development, the requirement of industrial automation controlling level is being improved constantly, the applying working condition that valve faced is also complicated, harsh more.Butterfly valve has become one of main flow control apparatus in the industrial process control, and this just has higher requirement to the sealability of butterfly valve under ultralow temperature (like the air separation) operating mode.In prior art, the traditional metal seal butterfly valve all adopt the common stainless steel material through the elastic metallic ring of punching press or turning moulding as valve seat, cooperate with valve plate and to realize sealing.Because serious cold short phenomenon appears in stainless steel under condition of ultralow temperature; Lose the required elasticity of effective sealing; Therefore determined the metallic sealing butterfly valve of conventional construction can't adapt to the working environment of ultralow temperature, occurred faults such as seal failure, trim damage easily, the reliability of valve, stability can't guarantee; Threaten whole system normally to move, even cause the tremendous economic loss.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the existing technology; Provide the deep cooling butterfly valve under a kind of ultralow temperature operating mode to use the metal seat valve sealing configuration; Sealability is stable, long service life, guarantees that apparatus moves safely and smoothly, reduces maintenance cost, enhances productivity.
According to technological scheme provided by the invention; Deep cooling butterfly valve under a kind of ultralow temperature operating mode is used the metal seat valve sealing configuration; Comprise valve body, valve plate and be installed in the valve gap on the valve body; In the axis hole of valve body, transmission shaft is installed, valve plate is installed in the runner hole of valve body through transmission shaft, between said valve plate and valve body, is provided with retainer; Characteristic is: fixing respectively inboard O type circle and outside O type circle between said retainer and valve body, and inboard O type circle is pressed on by positioning ring and forms sealing on the valve plate, and outside O type circle is pressed on by retainer and forms sealing on the valve body.
Said outside O type circle and inboard O type circle comprise the spring that outer field metal layer is inner with being coated on metal layer.
Seamless link between said inboard O type circle and the outside O type circle.
Said positioning ring is installed in retainer inside.
Said spring is processed by the nichrome material.
Compared with present technology the present invention has the following advantages:
1, because metal O type circle adopts INCONEL material (nichrome), even under-254 ℃ ultra-low temperature surroundings, still can keep better elastic;
2, built-in nichrome (INCONEL) spring of metal O type circle can provide sealing necessary specific pressure;
3, seamless link between the inside and outside O type circle, the ingenious medium of having avoided produces seepage from positioning ring;
4, effectively prolong the life-span of valve, reduced maintenance cost, promoted economic benefit.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the I enlarged view of Fig. 1.
Embodiment
Below in conjunction with concrete accompanying drawing the present invention is described further.
Like Fig. 1～shown in Figure 2: the deep cooling butterfly valve under the ultralow temperature operating mode comprises valve body 1, valve plate 2, retainer 3, positioning ring 4, inboard O type circle 5, outside O type circle 6, trim ring 7, transmission shaft 8, valve gap 9 etc. with the metal seat valve sealing configuration.
The present invention includes valve body 1, valve plate 2 and be installed in the valve gap 9 on the valve body 1, transmission shaft 8 is installed in the axis hole of valve body 1, valve plate 2 is installed in the runner hole of valve body 1; Between said valve plate 2 and valve body 1, be provided with retainer 3, fixing respectively inboard O type circle 5 and outside O type circle 6 between retainer 3 and valve body 1, inboard O type circle 5 is pressed on the valve plate 2 by positioning ring 4, and said positioning ring 4 is installed in retainer 3 inside;
Form the sealing of first road between said valve plate 2 and the inboard O type circle 5; Seamless link between said inboard O type circle 5 and the outside O type circle 6 can prevent that medium from producing seepage from positioning ring 4, forms the sealing of second road; Form three seals between said outside O type circle 6 and the valve body 1;
Said outside O type circle 6 comprises the spring that outer field metal layer is inner with being coated on metal layer with inboard O type circle 5, and said spring is processed by nichrome material (INCONEL).
The present invention still can keep outstanding sealability under-254 ℃ ultra-low temperature surroundings, effectively prolonged the working life of valve, has reduced maintenance cost, promotes economic benefit.
Claims (5)
1. the deep cooling butterfly valve under the ultralow temperature operating mode is used the metal seat valve sealing configuration; Comprise valve body (1), valve plate (2) and be installed in the valve gap (9) on the valve body (1); Transmission shaft (8) is installed in the axis hole of valve body (1); Valve plate (2) is installed in the runner hole of valve body (1), between said valve plate (2) and valve body (1), is provided with retainer (3); It is characterized in that: fixing respectively inboard O type circle (5) and outside O type circle (6) between said retainer (3) and valve body (1); Inboard O type circle (5) is pressed on the valve plate (2) by positioning ring (4), and outside O type circle (6) is pressed on the valve body (1) by retainer (3).
2. the deep cooling butterfly valve under the ultralow temperature operating mode as claimed in claim 1 is used the metal seat valve sealing configuration, it is characterized in that: said outside O type circle (6) and inboard O type circle (5) comprise the spring that outer field metal layer is inner with being coated on metal layer.
3. the deep cooling butterfly valve under the ultralow temperature operating mode as claimed in claim 1 is used the metal seat valve sealing configuration, it is characterized in that: seamless link between said inboard O type circle (5) and the outside O type circle (6).
4. the deep cooling butterfly valve under the ultralow temperature operating mode as claimed in claim 1 is used the metal seat valve sealing configuration, it is characterized in that: said positioning ring (4) is installed in retainer (3) inside.
5. the deep cooling butterfly valve under the ultralow temperature operating mode as claimed in claim 2 is used the metal seat valve sealing configuration, it is characterized in that: said spring is processed by nichrome material (INCONEL).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103245492A CN102359609A (en) | 2011-10-22 | 2011-10-22 | Metal valve seat sealing structure for cryogenic butterfly valve under ultralow temperature working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103245492A CN102359609A (en) | 2011-10-22 | 2011-10-22 | Metal valve seat sealing structure for cryogenic butterfly valve under ultralow temperature working condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102359609A true CN102359609A (en) | 2012-02-22 |
Family
ID=45584976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103245492A Pending CN102359609A (en) | 2011-10-22 | 2011-10-22 | Metal valve seat sealing structure for cryogenic butterfly valve under ultralow temperature working condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102359609A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443777A (en) * | 2016-02-01 | 2016-03-30 | 无锡智能自控工程股份有限公司 | Memory alloy sealed valve seat structure and dual-centrifugal butterfly valve with same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5249774A (en) * | 1992-01-15 | 1993-10-05 | Alsthom Velan | Valve having a metal seal, in particular a butterfly valve |
| CN2835730Y (en) * | 2005-07-26 | 2006-11-08 | 石家庄阀门一厂股份有限公司 | Metal composite seal ring |
| JP2007170556A (en) * | 2005-12-22 | 2007-07-05 | Niigata Loading Systems Ltd | Sealing device for eccentric butterfly valve |
| CN101865288A (en) * | 2010-05-13 | 2010-10-20 | 励行根 | Cladding sealing ring and manufacturing method thereof |
| CN201802886U (en) * | 2010-07-14 | 2011-04-20 | 成都欣国立低温科技有限公司 | Ultra-low temperature dual-eccentric sealing butterfly valve |
-
2011
- 2011-10-22 CN CN2011103245492A patent/CN102359609A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5249774A (en) * | 1992-01-15 | 1993-10-05 | Alsthom Velan | Valve having a metal seal, in particular a butterfly valve |
| CN2835730Y (en) * | 2005-07-26 | 2006-11-08 | 石家庄阀门一厂股份有限公司 | Metal composite seal ring |
| JP2007170556A (en) * | 2005-12-22 | 2007-07-05 | Niigata Loading Systems Ltd | Sealing device for eccentric butterfly valve |
| CN101865288A (en) * | 2010-05-13 | 2010-10-20 | 励行根 | Cladding sealing ring and manufacturing method thereof |
| CN201802886U (en) * | 2010-07-14 | 2011-04-20 | 成都欣国立低温科技有限公司 | Ultra-low temperature dual-eccentric sealing butterfly valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443777A (en) * | 2016-02-01 | 2016-03-30 | 无锡智能自控工程股份有限公司 | Memory alloy sealed valve seat structure and dual-centrifugal butterfly valve with same |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 214026 Jiangsu Province, Wuxi City Station District National hi tech Development Zone Economic Development Park A District No. 18 Applicant after: Wuxi Smart Auto-Control Engineering Co., Ltd. Address before: 214026 Jiangsu Province, Wuxi City Station District National hi tech Development Zone Economic Development Park A District No. 18 Applicant before: Wuxin Intelligent Automatic Control Engineering Co., Ltd. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: WUXIN INTELLIGENT AUTOMATIC CONTROL ENGINEERING CO., LTD. TO: WUXI SMART AUTO-CONTROL ENGINEERING CO., LTD. |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120222 |