CN207297861U - A kind of metal and graphite composite winding gasket - Google Patents
A kind of metal and graphite composite winding gasket Download PDFInfo
- Publication number
- CN207297861U CN207297861U CN201721371306.3U CN201721371306U CN207297861U CN 207297861 U CN207297861 U CN 207297861U CN 201721371306 U CN201721371306 U CN 201721371306U CN 207297861 U CN207297861 U CN 207297861U
- Authority
- CN
- China
- Prior art keywords
- metal
- winding
- tape
- packing ring
- gasket
- 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 kind of metal and graphite composite winding gasket, belong to SW with outside ring technical field.The gasket includes winding packing ring, winds the inner ring (3) on the inside of packing ring and winds the outer shroud (6) on the outside of packing ring, the winding packing ring includes the metal tape (1) and graphite tape (2) for being alternately wound a ring bodies successively, and the graphite tape (2) is arranged between adjacent two layers metal tape (1)；Multiple through holes (4) are intervally distributed with the metal tape (1), outstanding flexible metal protrusion (5) are equipped with the through hole (4), the inner side of the outer shroud (6) is concave structure.The metal tape of the gasket is planar structure, low to winding process requirement, while meets seal request, and sealing effect reaches level-one, and has longer service life.
Description
Technical field
The utility model belongs to SW with outside ring technical field, more particularly to a kind of metal and graphite composite winding pad
Piece, more particularly to a kind of non-V-arrangement or non-W-shaped metal and graphite composite winding gasket.
Background technology
Metal, graphite wound gasket piece are the gasket that resilience is optimal in semimetal gasket；At present, in the market is mostly by V
Shape or W shape thin steel strips replace with graphite to be entwined, its density of texture can make according to different coupling mechanism force requirements, and profit
Its maximum compaction degree is controlled with inside and outside steel loop.The surface finish requirements of the flange sealing surface of spirotallic gasket contact are not high especially suitable
For load to be uneven, engaging force easily relaxes, temperature with pressure cycle change, have the occasions of impact or vibrations.Be valve,
The accurate envelope original paper of the flange connections such as pump, heat exchanger, tower, manhole, hand hole, be widely used for petrochemical industry, machinery, electric power, metallurgy,
The departments such as shipbuilding, medicine, atomic energy and aerospace.But existing V-type or W type thin steel strip spirotallic gaskets are to winding process requirement
It is high, it is possible to occur sealing surface be uneven or each layer between easily there is the problems such as gap, may go out after prolonged use
Existing risk of leakage.
The content of the invention
The utility model embodiment provides a kind of metal and graphite composite winding gasket, and the metal tape of the gasket is plane
Structure, it is low to winding process requirement, while meet seal request.The technical solution is as follows：
The utility model embodiment provides a kind of metal and graphite composite winding gasket, the gasket include winding packing ring,
The inner ring 3 on the inside of packing ring and the outer shroud 6 on the outside of winding packing ring are wound, the winding packing ring includes alternately being wound a ring successively
The metal tape 1 and graphite tape 2 of shape body, the graphite tape 2 are arranged between adjacent two layers metal tape 1；Interval point on the metal tape 1
Multiple through holes 4 are furnished with, outstanding flexible metal protrusion 5 is equipped with the through hole 4, the inner side of the outer shroud 6 is tied for concave surface
Structure.
Wherein, the shape of the through hole 4 in the utility model embodiment is circle, it is set along the center line of metal tape 1, adjacent
The distance between through hole 4 is 0.5-2.5cm.
Wherein, the material of the flexible metal protrusion 5 in the utility model embodiment is nickel, it is arranged on by way of spot welding
In through hole 4, its outstanding height is 0.05-0.2mm.
Further, the winding packing ring in the utility model embodiment protrudes inner ring 3 and outer shroud 6 up and down.
Wherein, the inner side of the outer shroud 6 in the utility model embodiment is V-arrangement or arcuate structure and is matte.
The beneficial effect brought of technical solution that the utility model embodiment provides is：The utility model embodiment provides
A kind of metal and graphite composite winding gasket, the metal tape of the gasket is planar structure, low to winding process requirement, is met at the same time
Seal request, sealing effect reaches level-one, and has longer service life.
Brief description of the drawings
Fig. 1 is the sectional view of metal and graphite composite winding gasket that the utility model embodiment provides；
Fig. 2 is the structure diagram for the metal tape that the utility model embodiment provides；
Fig. 3 is the metal tape and the structure diagram of flexible metal combination of protrusions that the utility model embodiment provides；
Fig. 4 is the metal tape and the sectional view of flexible metal combination of protrusions that the utility model embodiment provides.
In figure：1 metal tape, 2 graphite tapes, 3 inner ring, 4 through holes, 5 flexible metals protrusion, 6 outer shrouds.
Embodiment
It is new to this practicality below in conjunction with attached drawing to make the purpose of this utility model, technical solution and advantage clearer
Type is described in further detail.
Referring to Fig. 1-4, the utility model embodiment provides a kind of metal and graphite composite winding gasket, which includes
Packing ring is wound, wind the inner ring 3 on the inside of packing ring and winds outer shroud 6 on the outside of packing ring etc., winding packing ring includes successively alternately winding
The metal tape 1 and graphite tape 2 of a ring bodies are formed, graphite tape 2 is arranged between adjacent two layers metal tape 1；Wound gasket circle is around interior
Ring 3 is set, and outer shroud 6 is set around winding packing ring.Aforementioned structure and existing gasket are essentially identical, and difference is：This reality
To apply and be intervally distributed with multiple through holes 4 on the metal tape 1 in example along its length, multiple through holes 4 are preferably distributed in straight line,
Outstanding flexible metal protrusion 5 is equipped with through hole 4.The outermost layer for winding packing ring is metal tape 1 and by welding
It is fixed；The inner side of outer shroud 6 is the concave structure that can house flexible metal protrusion 5（Flexible metal on the outside of winding packing ring is convex
Play 5）, its outside can be planar structure, its outside can also be outstanding globoidal structure；The conventional ring-type knot of inner ring 3
Structure（Interior lateral surface all can be plane）.
Wherein, referring to Fig. 1-4, the shape of the through hole 4 in the utility model embodiment is circle, it is along metal tape 1（Up and down
Between side）Center line set, its aperture is that the distance between 1-5mm, adjacent through-holes 4 is 0.5-2.5cm.Further, form
The spacing for winding the through hole 4 on the metal tape 1 on the inside of packing ring is preferably less than between the through hole 4 on the metal tape 1 for forming outside
Away from；Preferably, the spacing of through hole 4 can gradually increase with the progress of winding.
Wherein, the material of the flexible metal protrusion 5 in the utility model embodiment is nickel, it is arranged on by way of spot welding
In through hole 4, its outstanding height is 0.05-0.2mm；Preferably, the protrusion of flexible metal protrusion 5 is preferably polished
Smooth camber.
Wherein, the material of the metal tape 1 in the utility model embodiment is stainless steel, its thickness is 0.3-0.8mm；Graphite
It is soft graphite with 2 material, its thickness is 0.3-0.8mm.
Further, referring to Fig. 1, the winding packing ring in the utility model embodiment protrude up and down inner ring 3 with it is outer
Ring 6, inner ring 3 is corresponding with lower surface concordant with the upper surface of outer shroud 6, and the height that winding packing ring protrudes is 0.1-0.4mm.
Wherein, the inner side of the outer shroud 6 in the utility model embodiment is V-arrangement or arcuate structure（It is concave structure）And
For matte（Chemical attack can be used）.
After testing, the gasket that this patent provides, under the conditions of 70MPa, compression ratio 27-34%, rebound degree 43-48%；
Under the pre- pressure on top surface of 35MPa, pressure medium 1.0MPa → 4.5MPa → 1.0MPa → 4.5MPa cycling conditions, maximum sealing leak
Rate is 0.90*10-3-0.97*10-3；Normal use 180 days, without obvious gap between each layer, can keep good leakproofness.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within new spirit and principle, any modification, equivalent replacement, improvement and so on, should be included in the guarantor of the utility model
Within the scope of shield.
Claims (5)
1. inner ring (3) and winding packing ring on the inside of a kind of metal and graphite composite winding gasket, including winding packing ring, winding packing ring
The outer shroud (6) in outside, the winding packing ring include the metal tape (1) and graphite tape (2) for being alternately wound a ring bodies successively,
The graphite tape (2) is arranged between adjacent two layers metal tape (1)；It is characterized in that, it is intervally distributed with the metal tape (1) more
A through hole (4), is equipped with that outstanding flexible metal is raised (5), and the inner side of the outer shroud (6) is concave surface in the through hole (4)
Structure.
2. metal according to claim 1 and graphite composite winding gasket, it is characterised in that the shape of the through hole (4)
For circle, it is set along the center line of metal tape (1), and the distance between adjacent through-holes (4) are 0.5-2.5cm.
3. metal according to claim 1 and graphite composite winding gasket, it is characterised in that the flexible metal is raised
(5) material is nickel, it is arranged in through hole (4) by way of spot welding, its outstanding height is 0.05-0.2mm.
4. metal according to claim 1 and graphite composite winding gasket, it is characterised in that the winding packing ring upwards and
It is downwardly projected inner ring (3) and outer shroud (6).
5. metal according to claim 1 and graphite composite winding gasket, it is characterised in that the inner side of the outer shroud (6)
For V-arrangement or arcuate structure and it is matte.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721371306.3U CN207297861U (en) | 2017-10-24 | 2017-10-24 | A kind of metal and graphite composite winding gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721371306.3U CN207297861U (en) | 2017-10-24 | 2017-10-24 | A kind of metal and graphite composite winding gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207297861U true CN207297861U (en) | 2018-05-01 |
Family
ID=62273982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721371306.3U Expired - Fee Related CN207297861U (en) | 2017-10-24 | 2017-10-24 | A kind of metal and graphite composite winding gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207297861U (en) |
-
2017
- 2017-10-24 CN CN201721371306.3U patent/CN207297861U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20180501 Termination date: 20211024 |