CN202812244U - Fireproof high-capacity butterfly valve - Google Patents
Fireproof high-capacity butterfly valve Download PDFInfo
- Publication number
- CN202812244U CN202812244U CN 201220486581 CN201220486581U CN202812244U CN 202812244 U CN202812244 U CN 202812244U CN 201220486581 CN201220486581 CN 201220486581 CN 201220486581 U CN201220486581 U CN 201220486581U CN 202812244 U CN202812244 U CN 202812244U
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- China
- Prior art keywords
- seal
- valve
- rings
- valve seat
- butterfly valve
- 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
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Abstract
The utility model discloses a fireproof high-capacity butterfly valve which comprises a valve body, a valve plate and a seal structure which is fixedly connected with the valve body through a pressing ring. The seal structure comprises two metal seal rings and a seal valve seat. The metal seal rings comprise supporting rings and wave-shaped lateral seal edges which form a whole with the supporting rings and extend inwardly and vertically. The seal valve seat is located between the two wave-shaped lateral seal edges. Double seal of soft seal and the metal seal rings are adopted in the fireproof high-capacity butterfly valve. The fireproof high-capacity butterfly valve mainly relies on the soft valve seat to seal and satisfies bubble level zero leakage demands. When the fire disaster occurs, the soft seal valve seat is burned, the metal seal rings closely contact with the butterfly valve to enable the valve to keep sealed within a regulated standard range. Moreover, by the adoption of the double back-to-back metal seal rings, same seal effects forward and reverse can be effectively guaranteed.
Description
Technical field
The utility model relates to valve technology field, particularly relates to a kind of fire-proof high-performance butterfly valve.
Background technique
High-performance butterfly valve middle 1960s, the use in butterfly valve produced as seat material along with teflon, and was put into american petroleum institute standard.The high-performance butterfly valve is generally two eccentric, ball face sealing structures, valve seat adopts PTFE/RPFE(teflon/reinforced TFE) material, the high-performance butterfly valve has that friction factor is little, moment of torsion is little, the life-span is long, can the advantage such as install and use at pipeline terminal, can be used for working pressure 11Mpa, 230 ℃ of temperature, can be installed on the pipeline of Korrosionsmedium, realize the two way sealed of valve and cut off medium or the conciliation flow, purposes is very extensive.
Along with the use of butterfly valve in the control manufacturing process, the frpf requirement has been proposed the high-performance butterfly valve of processing inflammable medium in hydrocarbon and oil, petrochemical industry, the chemical industry.The high-performance butterfly valve of fire-proof be used in require to occur under the condition of a fire environment still can reliable sealing occasion, during normal operation.Elastic seat contacts with the dish plate and keeps sealing.When the condition of a fire occured, in case the tetrafluoroethylene seal ring is burnt or softens, valve still can guarantee the basis for establishing sealing.But its reverse sealing effect after seal ring is burnt of existing fire-proof butterfly valve is bad, has potential safety hazard.
Summary of the invention
The purpose of this utility model is for the technological deficiency that exists in the prior art, and a kind of fire-proof high-performance butterfly valve with better fireproof performance is provided.
For realizing that the technological scheme that the purpose of this utility model adopts is:
A kind of fire-proof high-performance butterfly valve, comprise valve body, valve plate with by pressure ring with it sealing configuration that is fixedly connected with valve body, two metal o-rings that described sealing configuration comprises and seal valve seat, described metal o-ring comprise support annulus and with the integrally formed and inside vertically extending waveform side sealing of described support annulus limit, described seal valve seat is positioned between the two waveform side sealing limits.
Described seal valve seat is made by PTFE.
Described metal o-ring is made by chrome-nickel.
Compared with prior art, the beneficial effects of the utility model are:
The utility model adopts seal valve seat and metal o-ring double seal, main by the seal valve seat sealing before the fire, satisfy bubble level zero leakage requirement, when fire occurs, the soft seal valve seat is burnt, and metal o-ring and butterfly valve close contact make valve still can keep being sealed within the specified standard scope, eliminate the potential safety hazard behind the fire, also can be used for the relatively crucial or abominable occasion of medium operating mode.And adopt back-to-back bimetallic (spring cone) seal circle, and can effectively guarantee forward and reverse equal sealing effect, prevent that fire from occuring rear because the secondary disaster that valve seal does not sternly produce.
Description of drawings
Figure 1 shows that structural representation of the present utility model;
Figure 2 shows that the local enlarged diagram of A section shown in Figure 1.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
As depicted in figs. 1 and 2, fire-proof high-performance butterfly valve of the present utility model, valve body 1, valve plate 2 with by pressure ring 3 with it sealing configuration that is fixedly connected with valve body, two metal o-rings 4 that described sealing configuration comprises and seal valve seat 5, described metal o-ring comprise support annulus 41 and with the integrally formed and inside vertically extending waveform side sealing of described support annulus limit 42, described soft seal valve seat is positioned between the two waveform side sealing limits.
Specifically, the slightly large diameter of diameter of described two metallic packing rings is slightly little to form the assembly parts that a cross section takes the shape of the letter U simultaneously with the nested connection of support annulus with two metallic packing rings, and seal valve seat is preferably made by PTFE, its by clamped between two metallic packing rings, can effectively keep its positional stability, the simultaneously extruding by metallic packing ring improves sealing effect.
Further, described metal o-ring 4 is chrome-nickel, and it adopts waveform side sealing circle to increase the pressurized deformable amount, and both sides arrange respectively and guaranteed especially its forward and reverse sealing effect.
Simultaneously, sealing configuration adopts pressing plate to be connected with valve body, and assembling all belongs to machinery and cooperates, and dismounting is convenient, can effectively save the maintenance and repair cost, the user cost of having saved valve for the user.
The utility model adopts metal sealing and seal valve seat double sealing structure, when medium presses butterfly plate from the reverse energization valve seat, or when promoting butterfly plate and press valve seat from forward, all can reach reliable sealing.The extruding of the waveform sealing sidewall of simultaneously soft seal valve seat both sides so that the soft seal valve seat can permanently keep and the pressure of valve plate, namely has the elastic compensating function, can the wearing and tearing of sealing pair be compensated.
Simultaneously, the utility model is made metal o-ring two corrugated, can make shell fragment have more elasticity.Place with two shell fragment stacks, make valve plate and metal sealing valve seat that two seal points be arranged, behind the pressure by medium, the metal sealing shell fragment just can reach forward and reverse equal sealing effect, more reliably sealing means like this.
The above only is preferred implementation of the present utility model; should be noted that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. fire-proof high-performance butterfly valve, comprise valve body, valve plate with by pressure ring with it sealing configuration that is fixedly connected with valve body, it is characterized in that, two metal o-rings that described sealing configuration comprises and seal valve seat, described metal o-ring comprise support annulus and with the integrally formed and inside vertically extending waveform side sealing of described support annulus limit, described seal valve seat is positioned between the two waveform side sealing limits.
2. fire-proof high-performance butterfly valve as claimed in claim 1 is characterized in that described seal valve seat is made by PTFE.
3. fire-proof high-performance butterfly valve as claimed in claim 1 or 2 is characterized in that described metal o-ring is made by chrome-nickel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220486581 CN202812244U (en) | 2012-09-21 | 2012-09-21 | Fireproof high-capacity butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220486581 CN202812244U (en) | 2012-09-21 | 2012-09-21 | Fireproof high-capacity butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202812244U true CN202812244U (en) | 2013-03-20 |
Family
ID=47871114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220486581 Expired - Fee Related CN202812244U (en) | 2012-09-21 | 2012-09-21 | Fireproof high-capacity butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202812244U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642175A (en) * | 2017-01-09 | 2017-05-10 | 江苏汉唐环保科技有限公司 | Desulfurized flue gas baffle plate door |
-
2012
- 2012-09-21 CN CN 201220486581 patent/CN202812244U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642175A (en) * | 2017-01-09 | 2017-05-10 | 江苏汉唐环保科技有限公司 | Desulfurized flue gas baffle plate door |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20150921 |
|
| EXPY | Termination of patent right or utility model |