CN201884649U - Metal spiral wound gasket with double fixing rings - Google Patents
Metal spiral wound gasket with double fixing rings Download PDFInfo
- Publication number
- CN201884649U CN201884649U CN2010205912928U CN201020591292U CN201884649U CN 201884649 U CN201884649 U CN 201884649U CN 2010205912928 U CN2010205912928 U CN 2010205912928U CN 201020591292 U CN201020591292 U CN 201020591292U CN 201884649 U CN201884649 U CN 201884649U
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- CN
- China
- Prior art keywords
- spiral wound
- strips
- nonmetal
- sealing
- metal
- 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
A metal spiral wound gasket with double fixing rings relates to sealing gaskets, and comprises an inner fixing ring, a sealing ring and an outer fixing ring, wherein the sealing ring is an annular component consisting of metal strips and nonmetal strips, the metal strips and the nonmetal strips are arranged at intervals. The metal spiral wound gasket is formed by mutually and alternately winding the metal strips with the nonmetal strips, and is molded by means of pressure, so that the metal spiral wound gasket has enough strength and superior corrosion resistance, and cannot damaged by extreme media when in the extreme media, while great expansion and contraction can be avoided, and further, the gasket with fine plasticity can adapt to rugged sealing surfaces to seal gaps of the sealing surfaces after being compressed, so that fine sealing performance under conditions of alternating system temperatures and pressures is guaranteed.
Description
Technical field
The utility model relates to a kind of gasket seal, a kind of specifically high temperature resistant, high pressure and erosion-resisting spiral wound gaskets.
Background technique
At present, in the power station, aviation, petrochemical industry and valve seal field, the general pad of making by single rubber or asbestos material that adopts on the flange seal surface, because every field difference, the sealing medium difference, increasing occasion needs this kind pad to have high temperature resistant, high pressure and characteristics such as anticorrosive when causing using, and conventional pad then can't satisfy above-mentioned requirements, does not therefore have good sealing effect.
The model utility content
The purpose of this utility model is to be the deficiency that solves the problems of the technologies described above, and a kind of spiral wound gaskets that has two retaining rings is provided, and it is simple in structure, and good sealing effect also has intensity height, high temperature resistant, high pressure and characteristics such as anticorrosive.
The utility model is the deficiency that solves the problems of the technologies described above, the technological scheme that is adopted is: a kind of spiral wound gaskets that has two retaining rings, constitute by internal fixation ring, seal ring and outer fixing ring, the annular component that described seal ring is made of metal tape and nonmetal band, metal tape and nonmetal tape alternation setting, the thickness of metal tape is 0.15-0.25mm, and the thickness of nonmetal band is 0.1-0.3mm.
The material of described metal tape is any one in stainless steel, carbon steel, nickel or the titanium.
The material of described nonmetal band is any one in graphite, teflon, asbestos or the pottery.
The beneficial effects of the utility model are:
1, the utility model alternately is entwined mutually by metal tape and nonmetal band, and, therefore enough intensity is arranged not only by pressure forming, also have good corrosion resistance, in some extreme media, do not destroyed, do not produce big expansion and contraction simultaneously by medium.
2, this pad has good plasticity, can adapt to the uneven of sealing surfaces after compressing and fills up the sealing surface gap, to guarantee having excellent sealing performance under the situation of system temperature and pressure alternation.
3, owing to the nonmetal band of the adjacent one deck of layer of metal band is entwined mutually, so this pad has good compression and rebound elasticity.
4, not softening, not creep under high temperature condition; Non-sclerous under the cryogenic conditions, do not shrink.
Description of drawings
Fig. 1 is a generalized section of the present utility model.
Mark among the figure: 1, internal fixation ring, 2, the outer fixing ring, 3, metal tape, 4, nonmetal band.
Embodiment
As shown in Figure 1, a kind of spiral wound gaskets that has two retaining rings, constitute by internal fixation ring 1, seal ring and outer fixing ring 2, seal ring is arranged between internal fixation ring 1 and the outer fixing ring 2, described seal ring is by the metal tape 3 of multilayer and multilayer is nonmetal is with 4 to constitute, the thickness of metal tape 3 is 0.15-0.25mm, and nonmetal thickness with 4 is 0.1-0.3mm.Layer of metal band 3 adjacent one decks are nonmetal alternately to be twined and the annular component of formation with 4, compresses thereafter to be integrative-structure.
The sealing ring is by the metal tape of " V " shape and nonmetally be with overlapped being entwined; both should fit tightly, level is even; because the quality of flange seal depends primarily on the position and the size of seal ring; so; the size of sealing ring is wherein the number of plies of metal tape and nonmetal band and can sets according to the size of valve sealing face; the effect of internal fixation ring and outer fixing ring is the sealing of protection pad, prevents the flange corrosion, and particularly suitable is under high temperature and high pressure condition.Its material is preferentially selected steel material for use.
Described metal tape 2 can be selected stainless steel, carbon steel, nickel or titanium for use, preferentially selects 300 series stainless steels in stainless steel for use, for example: 304,316,321 etc.
Describedly nonmetally be with 3 can select non-metallic materials such as graphite, teflon, asbestos, pottery for use.
The utility model is applicable to the sealing of various media, for example: steam, hydrogen, rock gas, cracking gas, oil product, acid, alkali, salt solution etc.
The utility model is entwined by metal tape and the nonmetal tape alternation of pre-molding, therefore have multiple-sealed, high temperature resistant, high pressure resistant, anticorrosive, to the advantage such as the flange seal surface roughness is less demanding, can be widely used in the industries such as power station, aviation, petrochemical industry, valve.
Claims (2)
1. spiral wound gaskets that has two retaining rings, it is characterized in that: constitute by internal fixation ring (1), seal ring and outer fixing ring (2), the annular component that described seal ring is made of metal tape (3) and nonmetal band (4), metal tape (3) and nonmetal band (4) are arranged alternately, the thickness of metal tape (3) is 0.15-0.25mm, and the thickness of nonmetal band (4) is 0.1-0.3mm.
2. a kind of spiral wound gaskets that has two retaining rings according to claim 1 is characterized in that: described metal tape (3) and nonmetal band (4) be shaped as V-arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205912928U CN201884649U (en) | 2010-11-04 | 2010-11-04 | Metal spiral wound gasket with double fixing rings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205912928U CN201884649U (en) | 2010-11-04 | 2010-11-04 | Metal spiral wound gasket with double fixing rings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201884649U true CN201884649U (en) | 2011-06-29 |
Family
ID=44182190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205912928U Expired - Fee Related CN201884649U (en) | 2010-11-04 | 2010-11-04 | Metal spiral wound gasket with double fixing rings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201884649U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261473A (en) * | 2011-07-22 | 2011-11-30 | 宁波金杉密封机械有限公司 | Metal vermiculite compound seal gasket |
| CN102606822A (en) * | 2012-03-21 | 2012-07-25 | 浙江高中压阀门有限公司 | High-temperature high-pressure elastic sealing gasket |
| CN104074975A (en) * | 2014-06-13 | 2014-10-01 | 慈溪市恒立密封材料有限公司 | Low-stress efficient sealing gasket and manufacturing method thereof |
| CN104620026A (en) * | 2012-07-06 | 2015-05-13 | 株式会社东芝 | Spiral gasket |
| CN106884985A (en) * | 2017-03-03 | 2017-06-23 | 慈溪市高新密封材料有限公司 | A kind of SW with outside ring |
-
2010
- 2010-11-04 CN CN2010205912928U patent/CN201884649U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261473A (en) * | 2011-07-22 | 2011-11-30 | 宁波金杉密封机械有限公司 | Metal vermiculite compound seal gasket |
| CN102261473B (en) * | 2011-07-22 | 2015-08-26 | 宁波金杉密封机械有限公司 | Metal vermiculite compound seal gasket |
| CN102606822A (en) * | 2012-03-21 | 2012-07-25 | 浙江高中压阀门有限公司 | High-temperature high-pressure elastic sealing gasket |
| CN104620026A (en) * | 2012-07-06 | 2015-05-13 | 株式会社东芝 | Spiral gasket |
| CN104074975A (en) * | 2014-06-13 | 2014-10-01 | 慈溪市恒立密封材料有限公司 | Low-stress efficient sealing gasket and manufacturing method thereof |
| CN106884985A (en) * | 2017-03-03 | 2017-06-23 | 慈溪市高新密封材料有限公司 | A kind of SW with outside ring |
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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: 20110629 Termination date: 20151104 |
|
| EXPY | Termination of patent right or utility model |