CN207229739U - A kind of constant stress gasket seal - Google Patents
A kind of constant stress gasket seal Download PDFInfo
- Publication number
- CN207229739U CN207229739U CN201721091870.XU CN201721091870U CN207229739U CN 207229739 U CN207229739 U CN 207229739U CN 201721091870 U CN201721091870 U CN 201721091870U CN 207229739 U CN207229739 U CN 207229739U
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- CN
- China
- Prior art keywords
- becket
- metal tape
- sealing ring
- flexible sealing
- gasket seal
- 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.)
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Abstract
Constant stress gasket seal, including：Becket, the becket are entwined by metal tape, are connected between the adjacent metal tape of each circle by laser welding, the thickness of the metal tape is small at both ends and big in the middle；Flexible sealing ring, lower flexible sealing ring are further included, the upper flexible sealing ring is attached on the upper surface of the becket, and the lower flexible sealing ring is attached on the lower face of the becket.The becket of the utility model is entwined by metal tape, and metal tape is small at both ends and big in the middle, therefore becket has suitable rigidity and elasticity, bolt looseness on due to flange is when reason causes pre-tight stress to produce change, becket makes adaptation using the elastic force of itself, so that pre-tight stress is kept constant, it is ensured that sealing effect is excellent, and sealing is lasting, stablizes.
Description
Technical field
It the utility model is related to a kind of gasket seal.
Background technology
Existing gasket seal is mainly by three kinds：One kind is tooth profile metal pad, and one kind is wound around padding, and another kind is metal wave
Odontolith ink Composition spacer.Tooth profile metal pad is exactly piece of metal ring due to being, the seal elastic poor in itself, at all
It is unable to reach the constant of pre-tight stress；Wound gasket is to be formed using metal tape with overlapped spiral windings of flexible material such as graphite
Seal, it is still unable to reach the substantially invariable effect of pre-tight stress with certain elasticity, and in wound gasket
Metal tape easily falls apart；.The sealing performance of above two gasket seal is also to be hoisted.Metal wave tooth graphite Composition spacer is in gold
The two sides for belonging to gasket sets waveform tooth, and then the composite stone ink pad on waveform tooth, intermediate portion are still metal gaskets again, are not had
The elasticity having had.Therefore, lack at present in static seal field a kind of low with just with constant stress or pressure attenuation coefficient
Property strong, not easy damaged gasket seal.
The content of the invention
In order to overcome the above-mentioned deficiency of existing gasket seal, the utility model provides a kind of sealing performance and is effectively lifted
Constant stress gasket seal.
The technical scheme in the invention for solving the technical problem is：Constant stress gasket seal, including：
Becket, the becket are entwined by metal tape, pass through laser between the adjacent metal tape of each circle
It is welded to connect, the thickness of the metal tape is small at both ends and big in the middle；
Upper flexible sealing ring, lower flexible sealing ring, the upper flexible sealing ring are attached on the upper surface of the becket,
The lower flexible sealing ring is attached on the lower face of the becket.
Further, the cross section of the metal tape is surrounded by two circular arcs, and the upper end of two circular arcs connects, the lower end phase of two circular arcs
Connect.
Further, it is additionally provided with interior locating ring in the inner circle of the becket.
Further, it is additionally provided with outer positioning ring outside the becket.
Further, the upper flexible sealing ring, lower flexible sealing ring are graphite material.
Further, the central part of metal tape is located at the laser welding between adjacent metal tape.
Further, the upper end joint of two circular arcs is fillet, and the lower end joint of two circular arcs is fillet.
The utility model is commonly used in the sealing of flange.
The beneficial effects of the utility model are：Becket is entwined by metal tape, and metal tape two is small, middle
Greatly, therefore becket has suitable rigidity and elasticity, and the reason such as bolt looseness on due to flange causes pre-tight stress to produce
During changing, becket makes adaptation using the elastic force of itself, so that pre-tight stress is kept constant, it is ensured that sealing effect is excellent
Good, sealing is lasting, stablizes.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is another structure diagram of the utility model.
Fig. 3 is another structure diagram of the utility model.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Reference Fig. 1, Fig. 2, Fig. 3, a kind of constant stress gasket seal, including：
Becket 1, the becket 1 are entwined by metal tape 2, are passed through between the adjacent metal tape 2 of each circle
Laser welding connects, and the thickness of the metal tape 2 is small at both ends and big in the middle.Recommend position at laser welding between adjacent metal tape 2
In the central part of metal tape 2, the metal tape of center section is last, therefore preferably welds, and is welded on middle part and also ensures
Gasket seal will not produce in stress the dislocation between metal tape.
The constant stress gasket seal further includes flexible sealing ring 3, lower flexible sealing ring 4, the upper flexible sealing ring 3
It is attached on the upper surface of the becket 1, the lower flexible sealing ring 4 is attached on the lower face of the becket 1.
The utility model is commonly used in the sealing of flange, and the thickness of metal tape 2 is small at both ends and big in the middle, therefore becket 1 has
Have suitable elasticity, the bolt looseness on due to flange when reason causes pre-tight stress to produce change, becket 1 using from
The elastic force of body makes adaptation, so that pre-tight stress is kept constant, it is ensured that sealing effect is good.
When in use, after the bolt on flange is tightened, reach close by upper flexible sealing ring 3, lower flexible sealing ring 4
Envelope.Simultaneously as metal tape 2 is small at both ends and big in the middle, therefore two of becket has a packing space 5, and the bolt on flange is twisted
Next upper flexible sealing ring 3, lower flexible sealing ring 4 are filled into packing space 5, reach good sealing effect.In the present invention
The flexible sealing ring refers to the flexible sealing material with compensation function, specifically, upper flexible sealing ring 3, lower flexibility are close
Seal ring 4 can use graphite material.
In the present embodiment, the cross section of the metal tape 2 is surrounded by two circular arcs, and the upper end of two circular arcs connects, two circular arcs
Lower end connects, so that the effect that the thickness for reaching metal tape 2 is small at both ends and big in the middle, while arc section can provide more preferable bullet
Property power.The upper end joint of two circular arcs is preferably fillet, and the lower end joint of two circular arcs is best fillet, can be obtained preferably close
Effect is sealed, big damage will not be caused to upper flexible sealing ring and lower flexible sealing ring.
As shown in Fig. 2, can also set interior locating ring 6 in the inner circle of the becket, interior 6 stretching of locating ring is in becket
In inner circle；As shown in figure 3, can also be equipped with outer positioning ring 7 outside the becket, outer positioning ring 7 packs tightly becket.
Claims (7)
1. constant stress gasket seal, it is characterised in that including：
Becket, the becket are entwined by metal tape, pass through laser welding between the adjacent metal tape of each circle
Connection, the thickness of the metal tape are small at both ends and big in the middle；
Upper flexible sealing ring, lower flexible sealing ring, the upper flexible sealing ring is attached on the upper surface of the becket, described
Lower flexible sealing ring be attached on the lower face of the becket.
2. constant stress gasket seal as claimed in claim 1, it is characterised in that：Enclosed by two circular arcs the cross section of the metal tape
Into the upper end of two circular arcs connects, and the lower end of two circular arcs connects.
3. constant stress gasket seal as claimed in claim 1 or 2, it is characterised in that：It is additionally provided with the inner circle of the becket
Interior locating ring.
4. constant stress gasket seal as claimed in claim 1 or 2, it is characterised in that：Outer positioning is additionally provided with outside the becket
Ring.
5. constant stress gasket seal as claimed in claim 1 or 2, it is characterised in that：The upper flexible sealing ring, lower flexibility
Sealing ring is graphite material.
6. constant stress gasket seal as claimed in claim 1 or 2, it is characterised in that：Laser Welding between adjacent metal tape
Connect central part of the place positioned at metal tape.
7. constant stress gasket seal as claimed in claim 2, it is characterised in that：The upper end joint of two circular arcs is fillet, two
The lower end joint of circular arc is fillet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721091870.XU CN207229739U (en) | 2017-08-29 | 2017-08-29 | A kind of constant stress gasket seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721091870.XU CN207229739U (en) | 2017-08-29 | 2017-08-29 | A kind of constant stress gasket seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207229739U true CN207229739U (en) | 2018-04-13 |
Family
ID=61859470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721091870.XU Active CN207229739U (en) | 2017-08-29 | 2017-08-29 | A kind of constant stress gasket seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207229739U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461494A (en) * | 2017-08-29 | 2017-12-12 | 慈溪市恒立密封材料有限公司 | A kind of constant stress gasket seal |
-
2017
- 2017-08-29 CN CN201721091870.XU patent/CN207229739U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461494A (en) * | 2017-08-29 | 2017-12-12 | 慈溪市恒立密封材料有限公司 | A kind of constant stress gasket seal |
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