CN207064944U - High anti-corrosion alloy steel expansion joint - Google Patents
High anti-corrosion alloy steel expansion joint Download PDFInfo
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- CN207064944U CN207064944U CN201720710847.8U CN201720710847U CN207064944U CN 207064944 U CN207064944 U CN 207064944U CN 201720710847 U CN201720710847 U CN 201720710847U CN 207064944 U CN207064944 U CN 207064944U
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- layer
- high anti
- alloy steel
- corrosion
- corrosion alloy
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Abstract
The utility model discloses a kind of high anti-corrosion alloy steel expansion joint, include a bellows, the both ends of bellows connect a first flange and a second flange respectively, more Limit screws are connected between first flange and second flange, the tube wall of the bellows is sandwich construction, outermost layer is stainless steel layer, and innermost layer is high anti-corrosion alloy steel layer, and an elastic rubber layer is additionally provided between stainless steel layer and high anti-corrosion alloy steel layer.The ripple tube wall of high anti-corrosion alloy steel expansion joint of the present utility model is three-decker, outermost layer is stainless steel layer, innermost layer is high anti-corrosion alloy steel layer, an elastic rubber layer is additionally provided between stainless steel layer and high anti-corrosion alloy steel layer, high anti-corrosion alloy steel layer has extremely strong corrosion resistance, corrosion of the internal corrosive fluid to corrugated pipe wall can be reduced, extends the service life of expansion joint.
Description
Technical field
A kind of expansion joint is the utility model is related to, more precisely, being a kind of high anti-corrosion alloy steel expansion joint.
Background technology
Type metal expansion joint be for compensation additional stress caused by temperature difference and mechanical oscillation, and be arranged on container casing or
A kind of flexible structure on pipeline.Because it is good as a kind of elastic compensation element that can freely stretch, reliable operation, performance
The advantages that good, compact-sized, have been widely used in departments such as chemical industry, metallurgy, nuclear energy.Bellows expansion joint is to use metal bellows
A kind of manufactured expansion joint.It can stretch in the axial direction, also allow a small amount of bending.The tube wall of bellows expansion joint is generally single
Layer metal, the corrosion resistance of this metal pipe-wall is limited, when fluids within pipes are high corrosion material then bellows be easy to by
Corrosion, the service life of bellows expansion joint are shorter.
Utility model content
The utility model is mainly to solve the technical problem present in prior art, so as to provide a kind of high anti-corrosion alloy steel
Expansion joint.
Above-mentioned technical problem of the present utility model is mainly what is be addressed by following technical proposals：
A kind of high anti-corrosion alloy steel expansion joint, comprising a bellows, the both ends of bellows connect respectively a first flange and
One second flange, more Limit screws are connected between first flange and second flange, the tube wall of the bellows is sandwich construction, most
Outer layer is stainless steel layer, and innermost layer is high anti-corrosion alloy steel layer, and an elasticity is additionally provided between stainless steel layer and high anti-corrosion alloy steel layer
Rubber layer；
The high anti-corrosion alloy steel layer is formed by the raw material melting of following parts by weight：High Purity Steel 115-120 parts, aluminium 16-22
Part, magnesium 3-6 parts, titanium 1-3 parts, nickel 2-5 parts, cobalt oxide 3-8 parts, vanadium 0.2-0.8 parts, chromium 8-14 parts.
As the utility model preferred embodiment, described elastic rubber layer is made up of TPV material.
As the utility model preferred embodiment, the thickness ratio of described stainless steel layer and high anti-corrosion alloy steel layer is 2：
5。
The ripple tube wall of high anti-corrosion alloy steel expansion joint of the present utility model is three-decker, and outermost layer is stainless steel
Layer, innermost layer is high anti-corrosion alloy steel layer, and an elastic rubber layer, high anti-corrosion are additionally provided between stainless steel layer and high anti-corrosion alloy steel layer
Alloy steel layer has extremely strong corrosion resistance, it is possible to reduce corrosion of the internal corrosive fluid to corrugated pipe wall, extends expansion joint
Service life.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of high anti-corrosion alloy steel expansion joint of the present utility model；
Fig. 2 is the layer structure schematic diagram of ripple tube wall.
Embodiment
Preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, it is apparent clear and definite so as to be made to the scope of protection of the utility model
Define.
As shown in Figure 1 and Figure 2, a kind of high anti-corrosion alloy steel expansion joint 1, a bellows 10, the both ends point of bellows 10 are included
A first flange 20 and a second flange 30 are not connected, and more Limit screws 40 are connected between first flange 20 and second flange 30,
The tube wall of the bellows 10 is sandwich construction, and outermost layer is stainless steel layer 11, and innermost layer is high anti-corrosion alloy steel layer 13, stainless
An elastic rubber layer 12 is additionally provided between steel layer 11 and high anti-corrosion alloy steel layer 13；
The high anti-corrosion alloy steel layer 13 is formed by the raw material melting of following parts by weight：High Purity Steel 115-120 parts, aluminium 16-
22 parts, magnesium 3-6 parts, titanium 1-3 parts, nickel 2-5 parts, cobalt oxide 3-8 parts, vanadium 0.2-0.8 parts, chromium 8-14 parts.
It is made up as to the further improvement of the utility model, described elastic rubber layer 12 of TPV material.
As to the further improvement of the utility model, the thickness of described stainless steel layer 11 and high anti-corrosion alloy steel layer 13
Degree is than being 2：5.
The ripple tube wall of the high anti-corrosion alloy steel expansion joint of the utility model is three-decker, and outermost layer is stainless steel
Layer, innermost layer is high anti-corrosion alloy steel layer, and an elastic rubber layer, high anti-corrosion are additionally provided between stainless steel layer and high anti-corrosion alloy steel layer
Alloy steel layer has extremely strong corrosion resistance, it is possible to reduce corrosion of the internal corrosive fluid to corrugated pipe wall, extends expansion joint
Service life.
[contrast experiment]
5 expansion joints of the utility model and 5 currently used bellows expansion joints are taken to carry out contrast experiment.It is swollen by 10
Swollen section numbers simultaneously insert experiment pipeline simultaneously, is passed through concentration as 25% acidic corrosive solution in experimental channel and circulates, follows
The ring time is 36 hours；Circulation releases the acidic corrosive solution in pipeline after terminating, and continues to be passed through the alkalescence that concentration is 25%
Corrosive solution simultaneously circulates, and circulation time is 36 hours.Circulation releases alkali lye after terminating, and non-metal expansion joint is torn open
Unload and carry out contrast test, it is as a result as follows：
Test result shows：High anti-corrosion alloy steel expansion joint of the present utility model is in a corrosive environment using more steady
Fixed, service life is longer.
Only illustrate mentality of designing of the present utility model in one embodiment above, in the case where system allows,
The utility model can expand to while external more functional modules, so as to extend its function to greatest extent.
It is described above, only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any change or replacement expected without creative work, should all cover within the scope of protection of the utility model.
Therefore, the scope of protection of the utility model should be determined by the scope of protection defined in the claims.
Claims (3)
- A kind of 1. high anti-corrosion alloy steel expansion joint（1）, it is characterised in that include a bellows（10）, bellows（10）Both ends A first flange is connected respectively（20）With a second flange（30）, first flange（20）And second flange（30）Between connect more limits Position screw rod（40）, the bellows（10）Tube wall be sandwich construction, outermost layer is stainless steel layer（11）, innermost layer is high anti-corrosion Alloy steel layer（13）, stainless steel layer（11）With high anti-corrosion alloy steel layer（13）Between be additionally provided with an elastic rubber layer（12）.
- 2. high anti-corrosion alloy steel expansion joint according to claim 1, it is characterised in that described elastic rubber layer（12）By TPV material is made.
- 3. high anti-corrosion alloy steel expansion joint according to claim 2, it is characterised in that described stainless steel layer（11）And height Anti-corrosion alloy steel layer（13）Thickness ratio be 2：5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720710847.8U CN207064944U (en) | 2017-06-18 | 2017-06-18 | High anti-corrosion alloy steel expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720710847.8U CN207064944U (en) | 2017-06-18 | 2017-06-18 | High anti-corrosion alloy steel expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207064944U true CN207064944U (en) | 2018-03-02 |
Family
ID=61509970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720710847.8U Expired - Fee Related CN207064944U (en) | 2017-06-18 | 2017-06-18 | High anti-corrosion alloy steel expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207064944U (en) |
-
2017
- 2017-06-18 CN CN201720710847.8U patent/CN207064944U/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 |
Granted publication date: 20180302 Termination date: 20210618 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |