CN206572102U - Spiral wound gaskets - Google Patents

Spiral wound gaskets Download PDF

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Publication number
CN206572102U
CN206572102U CN201720205652.8U CN201720205652U CN206572102U CN 206572102 U CN206572102 U CN 206572102U CN 201720205652 U CN201720205652 U CN 201720205652U CN 206572102 U CN206572102 U CN 206572102U
Authority
CN
China
Prior art keywords
ring
metal tape
sealing ring
spiral wound
metallic
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
Application number
CN201720205652.8U
Other languages
Chinese (zh)
Inventor
龚旭远
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CIXI HIGH NEW (COXIN) SEALING MATERIAL Co Ltd
Original Assignee
CIXI HIGH NEW (COXIN) SEALING MATERIAL Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CIXI HIGH NEW (COXIN) SEALING MATERIAL Co Ltd filed Critical CIXI HIGH NEW (COXIN) SEALING MATERIAL Co Ltd
Priority to CN201720205652.8U priority Critical patent/CN206572102U/en
Application granted granted Critical
Publication of CN206572102U publication Critical patent/CN206572102U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of spiral wound gaskets, including the inner ring of airtight connection, sealing ring and to middle ring successively from inside to outside, sealing ring includes metal tape and the non-metallic formed by non-metallic fillers, metal tape and non-metallic are shaped as V-arrangement, inner ring is connected with the concave surface of metal tape internal diameter, the contact surface of inner ring and metal tape is provided with elastic ring, and elastic ring is abutted with the inner side end of metal tape internal diameter.After the end face of pipe flange is pressed on sealing ring, metal tape on sealing ring is pressurized and can deformed slightly inwardly, inner side end on metal tape internal diameter also can be extruded inwardly elastic ring, now due to the elastic reaction of elastic ring, a reverse active force can be produced to the inner side end of metal tape internal diameter, so as to enhancing the outside elasticity of metal tape, allow sealing ring abuts with the end face of pipe flange is even closer so that the sealing effectiveness between sealing ring and pipe flange is more preferable.

Description

Spiral wound gaskets
Technical field
The utility model is related to a kind of gasket seal, more particularly to a kind of spiral wound gaskets.
Background technology
Spiral wound gaskets are widely used in fields such as petrochemical industries, and using effect is very good.Gold It is overlapped with non-metallic by " V " shape or " W " shape metal tape to belong to spiral wound gasket, and continuous winding is formed, and is used in beginning, end Spot welding mode fixes metal tape.
Spiral wound gaskets four kinds of patterns of component point, in addition to basic model, conventional also has band inner ring type, band to middle ring Type, band inner ring and centering are ring-like.It is described to refer to be embedded with inner ring by the inner ring of spiral wound gaskets with inner ring type;Band is to middle ring Type refers to be cased with to middle ring on the outer ring of spiral wound gaskets;Refer in spiral wound gaskets with inner ring and centering are ring-like Circle is embedded with inner ring, while being also cased with to middle ring on outer ring.
Chinese patent notification number CN203442372U discloses a kind of " environment-friendly type semimetal spiral wound gasket ", including interior Ring, wrap and outer shroud, in addition to sealing ring;The inner ring, wrap, outer shroud and sealing ring closed company successively from inside to outside Connect;The wrap is set to V-shaped;The concave surface connection of the inner ring and wrap;The convex surface of the outer shroud and wrap connects Connect;Bolt hole is arranged at intervals with the outer shroud.
Elasticity of the above-mentioned environment-friendly type semimetal spiral wound gasket typically all by V-arrangement metal tape outwards outwards squeezes non-metallic Pressure to abut with the end face of pipe flange to be sealed, therefore very high to the performance requirement of metal tape.
Utility model content
The purpose of this utility model be to provide it is a kind of can strengthen metal tape outwards elasticity spiral wound gaskets.
Above-mentioned technical purpose of the present utility model technical scheme is that:
A kind of spiral wound gaskets, including inner ring, sealing ring and to middle ring, the inner ring, sealing ring and to middle ring from Interior to arrive outer airtight connection successively, the sealing ring includes metal tape and the non-metallic formed by non-metallic fillers, the metal Band and non-metallic are shaped as V-arrangement, and the inner ring is connected with the concave surface of the metal tape internal diameter, the inner ring and metal tape Contact surface is provided with elastic ring, and the elastic ring is abutted with the inner side end of metal tape internal diameter.
By using such scheme, because elastic ring is abutted with the inner side end of metal tape internal diameter, when the end of pipe flange After face pressure is on sealing ring, the metal tape on sealing ring is pressurized and can deformed slightly inwardly, the inner side end on metal tape internal diameter Inwardly elastic ring can be extruded, now due to the elastic reaction of elastic ring, the inner side end of metal tape internal diameter can be produced One reverse active force, so as to enhance the outside elasticity of metal tape, allows sealing ring to be abutted more with the end face of pipe flange Step up close so that the sealing effectiveness between sealing ring and pipe flange is more preferable.
As a kind of improvement of the present utility model, it is located in the inner ring on the end face abutted with metal tape and offers ring Groove, the elastic ring is placed in annular groove.
By using such scheme, elastic ring is placed in annular groove, can cause elastic ring between inner ring and metal tape Fixed more stablizes.
As a kind of improvement of the present utility model, the elastic ring uses O-ring.
By using such scheme, O-ring is cheap, is simple to manufacture, and working life is high, can bear tens megapascal (MPa)s Pressure, O-ring also have sealed effect, can prevent corrosive substance from corroding sealing ring from metal tape inner radius.
It is described to being arranged at intervals with bolt hole in middle ring as a kind of improvement of the present utility model, it is described to the outer of middle ring Edge is provided with sealing ring.
By using such scheme, sealing ring is set in the outer rim to middle ring, made to producing sealing effect in middle ring external diameter Really, so as to protect flange face, bolt and pad to isolate in itself with outside air and liquid, corrosive goods has been efficiently controlled The corrosion of matter and gas to flange, bolt and pad in itself, extension flange, bolt, the service life of pad in itself, is avoided simultaneously Pollution of the rusty stain to ground environment.
As a kind of improvement of the present utility model, the sealing ring is concave, the spill mouthful occlusion of the sealing ring To the external diameter of middle ring.
By using such scheme, it is ensured that sealing ring is stably fixed to the outer rim to middle ring.
As a kind of improvement of the present utility model, the outer radius of the wound section of the sealing ring includes 3 ~ 5 circle metal tapes, The inner radius of the wound section of the sealing ring is included in the middle part of 2 ~ 3 circle metal tapes, the winding of the sealing ring by metal tape and non- Metal is spaced to be constituted.
By using such scheme, multi-turn is all set to be not added with the metals of non-metallic fillers in the external diameter and internal diameter of sealing ring Band, can increase and sealed effect is primarily served in the middle part of the bulk strength of sealing ring, sealing ring, and stress is relatively small, will Metal tape and non-metallic, which are arranged at intervals, can play sealed effect, and certain structural strength is can guarantee that again.
As a kind of improvement of the present utility model, the material of the metal tape is any in stainless steel, carbon steel, nickel or titanium It is a kind of.
By using such scheme, the material of metal tape is any one in stainless steel, carbon steel, nickel or titanium, Ke Yibao Card metal tape has excellent resilience, adapts to pressure thermal cycle and vibration in pipe-line system.
As it is of the present utility model it is a kind of improve, the material of the non-metallic is graphite, asbestos, polytetrafluoroethylene (PTFE), non- Any one in asbestos paper, mica or ceramics.
By using such scheme, the material of non-metallic is graphite, asbestos, polytetrafluoroethylene (PTFE), non-asbestos paper, mica or Any one in ceramics, it is ensured that the sealing of sealing ring.
In summary, the utility model has the advantages that:
1st, set on the contact surface of the metal tape in inner ring and sealing ring in elastic ring, and elastic ring and metal tape The inner side end in footpath is abutted, after the end face of pipe flange is pressed on sealing ring, and the metal tape on sealing ring can slightly due to being pressurized Micro- to be deformed inward, the inner side end on metal tape internal diameter also can be extruded inwardly elastic ring, now due to the bullet of elastic ring Property effect, a reverse active force can be produced to the inner side end of metal tape internal diameter, so as to enhance the outside bullet of metal tape Property so that the sealing effectiveness between sealing ring and pipe flange is more preferable;Opened on the end face abutted with metal tape inner ring is upper Provided with annular groove, elastic ring is placed in annular groove, can cause elastic ring is fixed between inner ring and metal tape more to stablize;Bullet Property circle use O-ring, O-ring is cheap, is simple to manufacture, and working life is high, can bear the pressure of tens megapascal (MPa)s, O-shaped Circle also has sealed effect, can prevent corrosive substance from corroding sealing ring from metal tape inner radius;
2nd, bolt hole is arranged at intervals with to middle ring, the outer rim to middle ring is provided with sealing ring, in the outer rim to middle ring Upper setting sealing ring, makes to producing sealing effectiveness in middle ring external diameter, thus protect flange face, bolt and pad in itself with the external world The isolation of air and liquid, has efficiently controlled the corrosion of corrosive substance and gas to flange, bolt and pad in itself, extension The service life of flange, bolt, pad in itself, while avoiding pollution of the rusty stain to ground environment;Sealing ring is concave, External diameter of the spill mouthful occlusion of sealing ring to middle ring, it is ensured that sealing ring is stably fixed to the outer rim to middle ring.
Brief description of the drawings
Fig. 1 is the front view of spiral wound gaskets;
Fig. 2 is the half sectional view of spiral wound gaskets.
In figure, 1, inner ring;101st, annular groove;2nd, sealing ring;201st, metal tape;202nd, non-metallic;3rd, to middle ring;301st, spiral shell Keyhole;4th, elastic ring;5th, sealing ring.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment:
Reference picture 1, a kind of spiral wound gaskets, including inner ring 1, sealing ring 2 and to middle ring 3, inner ring 1, the and of sealing ring 2 To the airtight connection successively from inside to outside of middle ring 3, opening up eight to uniform intervals in middle ring 3 has bolt hole 301, to middle ring 3 Sealing ring 5 is additionally provided with outer rim.
With reference to Fig. 2, sealing ring 5 is concave, and the spill mouthful of sealing ring 5 is engaged the external diameter to middle ring 3, sealing ring 5 The thickness of thickness and sealing ring 2 is close;The thickness ratio inner ring 1 of sealing ring 2 and big to the thickness of middle ring 3, sealing ring 2 includes metal The non-metallic 202 formed with 201 and by non-metallic fillers, the material of metal tape 201 is in stainless steel, carbon steel, nickel or titanium Any one, metal tape 201 is from being made of stainless steel, and the material of non-metallic 202 is graphite, asbestos, polytetrafluoroethylene (PTFE), non- Any one in asbestos paper, mica or ceramics, non-metallic 202 of graphite from being made up.
The shape of metal tape 201 and non-metallic 202 is all V-arrangement, and the outer radius of the wound section of sealing ring 2 is wound with 4 circles Metal tape 201, the inner radius of the wound section of sealing ring 2 is wound with the middle part of 2 circle metal tapes 201, the winding of sealing ring 2 by metal tape 201 and non-metallic 202 interval constitute, middle ring 3 be connected with the convex surface of the external diameter of outermost metal tape 201, inner ring 1 and most on the inside of The concave surface connection of the internal diameter of metal tape 201.
It is located in inner ring 1 on the upper and lower ends face abutted with metal tape 201 and respectively offers in an annular groove 101, annular groove 101 Elastic ring 4 is embedded with, elastic ring 4 uses O-ring, and elastic ring 4 is abutted with the inner side end of the internal diameter of metal tape 201.
After the end face of pipe flange is pressed in 2 both sides of sealing ring, the metal tape 201 on sealing ring 2 can somewhat due to being pressurized It is deformed inward, causes the inner side end on the internal diameter of metal tape 201 inwardly to extrude elastic ring 4, now due to elastic ring 4 Elastic reaction, can produce a reverse active force, so as to enhance metal tape 201 to the inner side end of the internal diameter of metal tape 201 Outside elasticity, allow sealing ring 2 abuts with the end face of pipe flange is even closer so that between sealing ring 2 and pipe flange Sealing effectiveness it is more preferable.
And due to setting sealing ring 5 in the outer rim to middle ring 3, make to producing sealing effectiveness in the external diameter of middle ring 3, so that Protect flange face, bolt and pad to isolate in itself with outside air and liquid, efficiently control corrosive substance gentle Corrosion of the body to flange, bolt and pad in itself, extension flange, bolt, the service life of pad in itself, while avoiding rusty stain Pollution to ground environment.
This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, ability Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but As long as all being protected in right of the present utility model by Patent Law.

Claims (8)

1. a kind of spiral wound gaskets, including inner ring(1), sealing ring(2)With to middle ring(3), the inner ring(1), sealing ring (2)With to middle ring(3)Airtight connection, the sealing ring successively from inside to outside(2)Including metal tape(201)With by non-metallic fillers The non-metallic of formation(202), the metal tape(201)And non-metallic(202)Be shaped as V-arrangement, it is characterised in that it is described Inner ring(1)With the metal tape(201)The concave surface connection of internal diameter, the inner ring(1)With metal tape(201)Contact surface be provided with Elastic ring(4), the elastic ring(4)With metal tape(201)The inner side end of internal diameter is abutted.
2. spiral wound gaskets according to claim 1, it is characterised in that the inner ring(1)On be located at and metal tape (201)Annular groove is offered on the end face of abutting(101), the elastic ring(4)It is placed in annular groove(101)It is interior.
3. spiral wound gaskets according to claim 2, it is characterised in that the elastic ring(4)Using O-ring.
4. spiral wound gaskets according to claim 1, it is characterised in that described to middle ring(3)On be arranged at intervals with Bolt hole(301), it is described to middle ring(3)Outer rim be provided with sealing ring(5).
5. spiral wound gaskets according to claim 4, it is characterised in that the sealing ring(5)For concave, institute State sealing ring(5)Spill mouthful occlusion to middle ring(3)External diameter.
6. spiral wound gaskets according to claim 1, it is characterised in that the sealing ring(2)Wound section Outer radius includes 3 ~ 5 circle metal tapes(201), the sealing ring(2)Wound section inner radius include 2 ~ 3 circle metal tapes (201), the sealing ring(2)Winding in the middle part of by metal tape(201)And non-metallic(202)Interval is constituted.
7. spiral wound gaskets according to claim 1, it is characterised in that the metal tape(201)Material for not Any one in steel, carbon steel, nickel or the titanium of becoming rusty.
8. spiral wound gaskets according to claim 1, it is characterised in that the non-metallic(202)Material be Any one in graphite, asbestos, polytetrafluoroethylene (PTFE), non-asbestos paper, mica or ceramics.
CN201720205652.8U 2017-03-03 2017-03-03 Spiral wound gaskets Expired - Fee Related CN206572102U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720205652.8U CN206572102U (en) 2017-03-03 2017-03-03 Spiral wound gaskets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720205652.8U CN206572102U (en) 2017-03-03 2017-03-03 Spiral wound gaskets

Publications (1)

Publication Number Publication Date
CN206572102U true CN206572102U (en) 2017-10-20

Family

ID=60056252

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720205652.8U Expired - Fee Related CN206572102U (en) 2017-03-03 2017-03-03 Spiral wound gaskets

Country Status (1)

Country Link
CN (1) CN206572102U (en)

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GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20171020

Termination date: 20200303