CN207064945U - The high non-corrosive metal (NCM) expansion joint of high temperature resistant - Google Patents
The high non-corrosive metal (NCM) expansion joint of high temperature resistant Download PDFInfo
- Publication number
- CN207064945U CN207064945U CN201720710848.2U CN201720710848U CN207064945U CN 207064945 U CN207064945 U CN 207064945U CN 201720710848 U CN201720710848 U CN 201720710848U CN 207064945 U CN207064945 U CN 207064945U
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- China
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- layer
- flange
- expansion joint
- ncm
- composite rubber
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- Diaphragms And Bellows (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The utility model discloses a kind of high non-corrosive metal (NCM) expansion joint of high temperature resistant, include a metal bellows, the both ends of the metal bellows connect a first flange and a second flange respectively, more Limit screws are connected between the first flange and second flange, the tube wall of the metal bellows is sandwich construction, outermost layer is stainless steel layer, and a composite rubber layer is additionally provided with the inwall of the stainless steel layer, and the surface of the composite rubber layer is provided with a basalt fibre layer of cloth.The ripple tube wall of the high non-corrosive metal (NCM) expansion joint of high temperature resistant of the present utility model is sandwich construction, the basalt fibre layer of cloth of innermost layer can play preferable heat-insulated and antisepsis, middle composite rubber layer pliability is preferable, it can keep stable at a higher temperature, simultaneously the composite rubber layer can acid and alkali-resistance, oil corrosion, long-term chemical stability can be kept under corrosive environment, and then effectively extends the service life of metal bellows.
Description
Technical field
A kind of expansion joint is the utility model is related to, more precisely, being a kind of high non-corrosive metal (NCM) expansion joint of high temperature resistant.
Background technology
Type metal expansion joint is compensation additional stress caused by temperature difference and mechanical oscillation, and is arranged on container casing or pipe
A kind of flexible structure on road.Because it is as a kind of elastic compensation element that can freely stretch, reliable operation, it is functional,
The advantages that compact-sized, have been widely used in departments such as chemical industry, metallurgy, nuclear energy.Type metal expansion joint is may be used at not as needed
On same pipeline, when fluids within pipes temperature is higher and has corrosivity, the tube wall of type metal expansion joint is easy to be corroded, and enters
And it have impact on the service life of type metal expansion joint.
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 temperature resistant high anti-corrosion
Type metal 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 non-corrosive metal (NCM) expansion joint of high temperature resistant, comprising a metal bellows, the both ends difference of the metal bellows
A first flange and a second flange are connected, more Limit screws, the metal are connected between the first flange and second flange
The tube wall of bellows is sandwich construction, and outermost layer is stainless steel layer, and a compounded rubber is additionally provided with the inwall of the stainless steel layer
Layer, the surface of the composite rubber layer is provided with a basalt fibre layer of cloth；
The composite rubber layer is prepared by the raw material of following parts by weight：Inclined fluoroether rubber 60-70 parts, acrylic acid junket rubber
Glue 35-45 parts, stearic acid 20-25 parts, nano-polyurethane 6-10 parts, diphenyl disulfide a pair of horses going side by side thiazole 2-5 parts, aluminum oxide 18-24 parts,
Paraffin 8-12 parts, sodium acid carbonate 3-6 parts.
As the utility model preferred embodiment, the thickness of described composite rubber layer is 3-8mm.
As the utility model preferred embodiment, the thickness ratio of described stainless steel layer and basalt fibre layer of cloth is 1：
2。
The ripple tube wall of the high non-corrosive metal (NCM) expansion joint of high temperature resistant of the present utility model is sandwich construction, the Black Warrior of innermost layer
Rock scrim cloth can play preferable heat-insulated and antisepsis, and middle composite rubber layer pliability is preferable, can be higher
At a temperature of keep stable, while the composite rubber layer can acid and alkali-resistance, oil corrosion, can keep long-term under corrosive environment
Chemical stability, and then effectively extend the service life of metal bellows.
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 the high non-corrosive metal (NCM) expansion joint of high temperature resistant of the present utility model；
Fig. 2 is the layer structure schematic diagram of ripple tube wall in Fig. 1.
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, the high non-corrosive metal (NCM) expansion joint 1 of a kind of high temperature resistant, a metal bellows 10, the metal are included
The both ends of bellows 10 connect a first flange 20 and a second flange 30 respectively, between the first flange 20 and second flange 30
Connect more Limit screws 40, the tube wall of the metal bellows 10 is sandwich construction, and outermost layer is stainless steel layer 11, it is described not
A composite rubber layer 12 is additionally provided with the inwall for steel layer 11 of becoming rusty, the surface of the composite rubber layer 12 is provided with a basalt fiber cloth
Layer 13；
The composite rubber layer 12 is prepared by the raw material of following parts by weight：Inclined fluoroether rubber 60-70 parts, acrylic acid junket
Rubber 35-45 parts, stearic acid 20-25 parts, nano-polyurethane 6-10 parts, diphenyl disulfide a pair of horses going side by side thiazole 2-5 parts, aluminum oxide 18-24
Part, paraffin 8-12 parts, sodium acid carbonate 3-6 parts.
It is 3-8mm as the thickness to the further improvement of the utility model, described composite rubber layer 12.
As to the further improvement of the utility model, the thickness of described stainless steel layer 11 and basalt fibre layer of cloth 13
Degree is than being 1：2.
The ripple tube wall of the high non-corrosive metal (NCM) expansion joint of high temperature resistant of the utility model is sandwich construction, the Black Warrior of innermost layer
Rock scrim cloth can play preferable heat-insulated and antisepsis, and middle composite rubber layer pliability is preferable, can be higher
At a temperature of keep stable, while the composite rubber layer can acid and alkali-resistance, oil corrosion, can keep long-term under corrosive environment
Chemical stability, and then effectively extend the service life of metal bellows.
[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, molten
For liquid temperature control at 85 DEG C, circulation time is 36 hours；Circulation releases the acidic corrosive solution in pipeline after terminating, and continues
It is passed through the alkaline corrosion solution that concentration is 25% and circulates, at 85 DEG C, circulation time is 36 hours for solution temperature control.
Circulation releases alkali lye after terminating, and non-metal expansion joint is dismantled and carries out contrast test, as a result as follows：
The high non-corrosive metal (NCM) expansion joint of high temperature resistant of the present utility model is in high temperature high corrosion environment it can be seen from test result
Lower performance is more stable, and 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 non-corrosive metal (NCM) expansion joint of high temperature resistant（1）, it is characterised in that include a metal bellows（10）, the metal Bellows（10）Both ends connect a first flange respectively（20）With a second flange（30）, the first flange（20）With second Flange（30）Between connect more Limit screws（40）, the metal bellows（10）Tube wall be sandwich construction, outermost layer is not Rust steel layer（11）, the stainless steel layer（11）Inwall on be additionally provided with a composite rubber layer（12）, the composite rubber layer（12） Surface be provided with a basalt fibre layer of cloth（13）.
- 2. the high non-corrosive metal (NCM) expansion joint of high temperature resistant according to claim 1, it is characterised in that described composite rubber layer （12）Thickness be 3-8mm.
- 3. the high non-corrosive metal (NCM) expansion joint of high temperature resistant according to claim 2, it is characterised in that described stainless steel layer（11） With basalt fibre layer of cloth（13）Thickness ratio be 1：2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720710848.2U CN207064945U (en) | 2017-06-18 | 2017-06-18 | The high non-corrosive metal (NCM) expansion joint of high temperature resistant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720710848.2U CN207064945U (en) | 2017-06-18 | 2017-06-18 | The high non-corrosive metal (NCM) expansion joint of high temperature resistant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207064945U true CN207064945U (en) | 2018-03-02 |
Family
ID=61509967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720710848.2U Expired - Fee Related CN207064945U (en) | 2017-06-18 | 2017-06-18 | The high non-corrosive metal (NCM) expansion joint of high temperature resistant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207064945U (en) |
-
2017
- 2017-06-18 CN CN201720710848.2U patent/CN207064945U/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: 20180302 Termination date: 20210618 |