CN102384310A - Bellows assembly of SF6 valve and manufacturing method thereof - Google Patents
Bellows assembly of SF6 valve and manufacturing method thereof Download PDFInfo
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- CN102384310A CN102384310A CN2011103318421A CN201110331842A CN102384310A CN 102384310 A CN102384310 A CN 102384310A CN 2011103318421 A CN2011103318421 A CN 2011103318421A CN 201110331842 A CN201110331842 A CN 201110331842A CN 102384310 A CN102384310 A CN 102384310A
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- valve rod
- supporting base
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- annular groove
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Abstract
The invention discloses a bellows assembly of an SF6 valve and a manufacturing method thereof. The bellows assembly comprises a valve rod, a support seat and a bellows, wherein the support seat is fixedly connected with the valve rod, and the valve rod is provided with a circular flange; the bellows is sleeved at the periphery of the valve rod between the circular flange and the support seat; and two ends of the bellows are respectively arranged in annular grooves formed on two oppositely arranged end faces of the circular flange and the support seat, and the bellows and the annular grooves are fixed by means of braze welding. Therefore, by using the bellows assembly of the SF6 valve disclosed by the invention, open welding between the mouth of the bellows and the valve rod as well as the support seat can be effectively avoided, thereby greatly improving the air tightness and service life of the bellows assembly.
Description
Technical field
The present invention relates to a kind of bellows component, it is mainly used in the SF6 valve.
Background technique
In electric utilities such as primary cut-outs; React with air for avoiding sulphur hexafluoride to mix hydrogen fluoride, sulfur fluoride gas etc.; Generate the toxic and harmful contaminated air; The general sulphur hexafluoride valve (SF6 valve) that adopts seals, and the sulphur hexafluoride valve usually adopts bellows component to seal.
In the existing technology; SF6 valve bellows component commonly used, as shown in Figure 1, form by valve rod, supporting base and with the bellows that valve rod and supporting base are tightly connected; Valve rod, supporting base all adopt brass H80 material; And bellows adopts stainless steel 304 materials, owing to be two kinds of different materials, selects for use soldering that both are welded usually.In addition, can know according to figure: the end flat soldering that it is oppositely arranged the two ends actinal surface of bellows with valve rod, supporting base respectively, still; Because the wall thickness of bellows often has only 0.14mm; Bonding area seldom carries out soldering and is easy to cause Lou weldering like this, is difficult to reach sealing effect.
By on can know: electric utilities such as primary cut-out are for the high leak tightness demand of SF6 valve, because the limitation of existing technology often can not satisfy.
Summary of the invention
The present invention is directed to the deficiency of existing technology, a kind of SF6 valve bellows component is provided, it can avoid the mouth of pipe and valve rod, the weldering of the leakage between the supporting base of bellows effectively, thus the sealing and the working life of greatly improving bellows component.
For realizing above technical purpose, the present invention will take following technological scheme:
A kind of SF6 valve bellows component comprises valve rod, supporting base and bellows; Supporting base is fixedly connected with valve rod; And on the said valve rod annular flange flange is set; The valve rod that bellows is socketed between annular flange flange and the supporting base is peripheral; In the annular groove that the both ends of the surface that the two ends of bellows place annular flange flange and supporting base to be oppositely arranged are respectively accordingly offered, and fixing between bellows and the annular groove through the soldering welding.
Another technical purpose of the present invention provides a kind of production method of above-mentioned SF6 valve bellows component, may further comprise the steps: the both ends of the surface correspondence that (1) is oppositely arranged on the annular flange flange of valve rod and supporting base is respectively offered one group of annular groove; (2) adopt alcohol with the annular groove of being offered on valve rod flange, the supporting base and the ripple mouth of pipe clean, drying; (3) earlier soldering flux, brazing flux are injected in the annular groove of being offered on the supporting base; Insert bellows in this annular groove then; Soldering flux, brazing flux are heated to 320-340 ℃ can accomplish the fastening of this annular groove and bellows, obtain bellows-supporting base connection part; (4) annotate in the annular groove of at first on the annular flange flange of valve rod, being offered soldering flux, brazing flux; The supporting base of the bellows-supporting base connection part that then step (3) is obtained is socketed on the valve rod periphery; And make the mouth of pipe of bellows be plugged in the annular groove of being offered on the valve rod annular flange flange, soldering flux, brazing flux are heated to 320-340 ℃ get final product.
According to above technological scheme, can realize following beneficial effect:
The present invention is through slotting assembly; Make bellows and annular groove carry out soldering; Increased the bonding area between bellows and valve rod and the supporting base, avoided effectively in the existing technology, because ripple mouth of pipe end face directly welds with face-face of supporting base, valve rod annular flange end face; The Lou generation of weldering phenomenon that causes, the sealing and the working life of greatly improving bellows component.
Description of drawings
Fig. 1 is the structural representation of common SF6 valve bellows component in the existing technology;
Fig. 2 is the structural representation of SF6 valve bellows component according to the invention;
Wherein: supporting base 1; Supporting base annular groove 11; Supporting base bellows 2; Valve rod annular flange flange 3; Stem ring connected in star 31.
Embodiment
Accompanying drawing discloses the structural representation of preferred embodiment involved in the present invention without limitation; Below will combine accompanying drawing that technological scheme of the present invention at length is described.
As shown in Figure 2, SF6 valve bellows component of the present invention comprises valve rod, supporting base and bellows; Supporting base is fixedly connected with valve rod; And on the said valve rod annular flange flange is set; The valve rod that bellows is socketed between annular flange flange and the supporting base is peripheral; In the annular groove that the both ends of the surface that the two ends of bellows place annular flange flange and supporting base to be oppositely arranged are respectively accordingly offered, and fixing between bellows and the annular groove through the soldering welding.
Another technical purpose of the present invention provides a kind of production method of above-mentioned SF6 valve bellows component, may further comprise the steps: the both ends of the surface correspondence that (1) is oppositely arranged on the annular flange flange of valve rod and supporting base is respectively offered one group of annular groove; (2) adopt alcohol with the annular groove of being offered on valve rod flange, the supporting base and the ripple mouth of pipe clean, drying; (3) earlier soldering flux, brazing flux are injected in the annular groove of being offered on the supporting base; Insert bellows in this annular groove then; Soldering flux, brazing flux are heated to 320-340 ℃ can accomplish the fastening of this annular groove and bellows, obtain bellows-supporting base connection part; (4) annotate in the annular groove of at first on the annular flange flange of valve rod, being offered soldering flux, brazing flux; The supporting base of the bellows-supporting base connection part that then step (3) is obtained is socketed on the valve rod periphery; And make the mouth of pipe of bellows be plugged in the annular groove of being offered on the valve rod annular flange flange 31, soldering flux, brazing flux are heated to 320-340 ℃ get final product.
Because copper component and stainless thermal conductivity are different, can know according to process practice: when valve rod annular flange temperature was 330 ℃, 240 ℃ of supporting base temperature less thaies can not make supporting base and bellows break away from.
It is low that equipment involved in the present invention and technology have a cost, characteristics such as processed finished products rate height; Solve the technical problem that common soldering oven can not be realized processing or the processed finished products rate is very low dexterously, adapted to the production of small enterprise's small lot especially.
Claims (2)
1. a SF6 valve bellows component comprises valve rod, supporting base and bellows; Supporting base is fixedly connected with valve rod; And on the said valve rod annular flange flange is set; The valve rod that bellows is socketed between annular flange flange and the supporting base is peripheral; It is characterized in that, in the annular groove that the both ends of the surface that the two ends of bellows place annular flange flange and supporting base to be oppositely arranged are respectively accordingly offered, and fixing between bellows and the annular groove through the soldering welding.
2. the production method of the said SF6 valve of claim 1 bellows component is characterized in that, may further comprise the steps: the both ends of the surface correspondence that (1) is oppositely arranged on the annular flange flange of valve rod and supporting base is respectively offered one group of annular groove; (2) adopt alcohol with the annular groove of being offered on valve rod flange, the supporting base and the ripple mouth of pipe clean, drying; (3) earlier soldering flux, brazing flux are injected in the annular groove of being offered on the supporting base; Insert bellows in this annular groove then; Soldering flux, brazing flux are heated to 320-340 ℃ can accomplish the fastening of this annular groove and bellows, obtain bellows-supporting base connection part; (4) annotate in the annular groove of at first on the annular flange flange of valve rod, being offered soldering flux, brazing flux; The supporting base of the bellows-supporting base connection part that then step (3) is obtained is socketed on the valve rod periphery; And make the mouth of pipe of bellows be plugged in the annular groove of being offered on the valve rod annular flange flange, soldering flux, brazing flux are heated to 320-340 ℃ get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103318421A CN102384310A (en) | 2011-10-27 | 2011-10-27 | Bellows assembly of SF6 valve and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103318421A CN102384310A (en) | 2011-10-27 | 2011-10-27 | Bellows assembly of SF6 valve and manufacturing method thereof |
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| CN102384310A true CN102384310A (en) | 2012-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103318421A Pending CN102384310A (en) | 2011-10-27 | 2011-10-27 | Bellows assembly of SF6 valve and manufacturing method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954283A (en) * | 2012-10-29 | 2013-03-06 | 浙江盾安阀门有限公司 | Corrugated tube welding assembly and production method thereof |
| CN104209637A (en) * | 2014-07-31 | 2014-12-17 | 江苏星河阀门有限公司 | Welding method of high-temperature and high-pressure corrugated pipe cutoff valve |
| CN105546146A (en) * | 2016-03-01 | 2016-05-04 | 江苏神通阀门股份有限公司 | Corrugated-pipe ball valve and assembly method thereof |
| CN105546206A (en) * | 2016-03-01 | 2016-05-04 | 江苏神通阀门股份有限公司 | Corrugated-pipe ball valve |
| CN105626890A (en) * | 2016-03-01 | 2016-06-01 | 江苏神通阀门股份有限公司 | Assembly method for corrugated pipe ball valve |
| CN109519545A (en) * | 2018-12-26 | 2019-03-26 | 北京宇航系统工程研究所 | A kind of heavy caliber Cryogenic Filling valve of forced opening-closing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03189491A (en) * | 1989-11-29 | 1991-08-19 | Toufuku Kk | Valve device structure |
| US5119061A (en) * | 1990-11-05 | 1992-06-02 | Yoshikazu Kuze | Thermo-actuator |
| CN200958607Y (en) * | 2006-02-06 | 2007-10-10 | 平顶山市天佳仪表有限责任公司 | Sulfur hexafluoride stop valve |
| CN202302280U (en) * | 2011-10-27 | 2012-07-04 | 江苏晨东机械制造有限公司 | Corrugated pipe component for SF6 valve |
-
2011
- 2011-10-27 CN CN2011103318421A patent/CN102384310A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03189491A (en) * | 1989-11-29 | 1991-08-19 | Toufuku Kk | Valve device structure |
| US5119061A (en) * | 1990-11-05 | 1992-06-02 | Yoshikazu Kuze | Thermo-actuator |
| CN200958607Y (en) * | 2006-02-06 | 2007-10-10 | 平顶山市天佳仪表有限责任公司 | Sulfur hexafluoride stop valve |
| CN202302280U (en) * | 2011-10-27 | 2012-07-04 | 江苏晨东机械制造有限公司 | Corrugated pipe component for SF6 valve |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954283A (en) * | 2012-10-29 | 2013-03-06 | 浙江盾安阀门有限公司 | Corrugated tube welding assembly and production method thereof |
| CN102954283B (en) * | 2012-10-29 | 2014-01-08 | 浙江盾安阀门有限公司 | Corrugated tube welding assembly and production method thereof |
| CN104209637A (en) * | 2014-07-31 | 2014-12-17 | 江苏星河阀门有限公司 | Welding method of high-temperature and high-pressure corrugated pipe cutoff valve |
| CN105546146A (en) * | 2016-03-01 | 2016-05-04 | 江苏神通阀门股份有限公司 | Corrugated-pipe ball valve and assembly method thereof |
| CN105546206A (en) * | 2016-03-01 | 2016-05-04 | 江苏神通阀门股份有限公司 | Corrugated-pipe ball valve |
| CN105626890A (en) * | 2016-03-01 | 2016-06-01 | 江苏神通阀门股份有限公司 | Assembly method for corrugated pipe ball valve |
| CN105546206B (en) * | 2016-03-01 | 2018-01-26 | 江苏神通阀门股份有限公司 | A kind of bellows ball valve |
| CN109519545A (en) * | 2018-12-26 | 2019-03-26 | 北京宇航系统工程研究所 | A kind of heavy caliber Cryogenic Filling valve of forced opening-closing |
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Application publication date: 20120321 |