CN107131381A - High anti-corrosion alloy steel expansion joint - Google Patents
High anti-corrosion alloy steel expansion joint Download PDFInfo
- Publication number
- CN107131381A CN107131381A CN201710461013.2A CN201710461013A CN107131381A CN 107131381 A CN107131381 A CN 107131381A CN 201710461013 A CN201710461013 A CN 201710461013A CN 107131381 A CN107131381 A CN 107131381A
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- CN
- China
- Prior art keywords
- layer
- high anti
- alloy steel
- corrosion alloy
- steel layer
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/025—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with several corrugations
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/028—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube with the expansion or contraction of each corrugation being limited
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Joints Allowing Movement (AREA)
- Diaphragms And Bellows (AREA)
Abstract
The invention discloses a kind of high anti-corrosion alloy steel expansion joint, include a bellows, the two ends of bellows connect a first flange and a second flange respectively, many 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 the high anti-corrosion alloy steel expansion joint of the present invention 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
The present invention relates to a kind of expansion joint, more precisely, being a kind of high anti-corrosion alloy steel expansion joint.
Background technology
Type metal expansion joint be to compensate the 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 as a kind of elastic compensation element that can freely stretch, reliable operation, performance are good
Well, the advantages of compact conformation, have been widely used in departments such as chemical industry, metallurgy, nuclear energy.Bellows expansion joint is to use metal bellows
A kind of expansion joint being made.It can stretch in the axial direction, also allow a small amount of bending.The tube wall of bellows expansion joint is generally list
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 is shorter.
The content of the invention
The present invention mainly solves the technical problem present in prior art, so as to provide a kind of high anti-corrosion alloy steel expansion
Section.
The above-mentioned technical problem of the present invention is mainly what is be addressed by following technical proposals：
A kind of high anti-corrosion alloy steel expansion joint, comprising a bellows, the two ends of bellows connect a first flange and one respectively
Two flanges, connect many Limit screws, the tube wall of the bellows is sandwich construction, outermost layer between first flange and second flange
For stainless steel layer, innermost layer is high anti-corrosion alloy steel layer, and an elastic caoutchouc is additionally provided between stainless steel layer and high anti-corrosion alloy steel layer
Layer；
The high anti-corrosion alloy steel layer is formed by the raw material melting of following parts by weight：115-120 parts of High Purity Steel, 16-22 parts of aluminium, magnesium
3-6 parts, 1-3 parts of titanium, 2-5 parts of nickel, 3-8 parts of cobalt oxide, 0.2-0.8 parts of vanadium, 8-14 parts of chromium.
As preferred embodiments of the present invention, described elastic rubber layer is made up of TPV material.
As preferred embodiments of the present invention, described stainless steel layer and the thickness ratio of high anti-corrosion alloy steel layer are 2：5.
The ripple tube wall of the high anti-corrosion alloy steel expansion joint of the present invention is three-decker, and outermost layer is stainless steel layer, most
Internal layer is high anti-corrosion alloy steel layer, and an elastic rubber layer, high anti-corrosion alloy are additionally provided between stainless steel layer and high anti-corrosion alloy steel layer
Steel layer has extremely strong corrosion resistance, it is possible to reduce corrosion of the internal corrosive fluid to corrugated pipe wall, extends making for expansion joint
Use the life-span.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the high anti-corrosion alloy steel expansion joint of the present invention；
Fig. 2 is the layer structure schematic diagram of ripple tube wall.
Embodiment
The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, apparent is clearly defined so as to be made to protection scope of the present invention.
As shown in Figure 1 and Figure 2, a kind of high anti-corrosion alloy steel expansion joint 1, includes a bellows 10, the two ends point of bellows 10
A first flange 20 and a second flange 30 are not connected, and many 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：115-120 parts of High Purity Steel, 16-22 parts of aluminium,
3-6 parts of magnesium, 1-3 parts of titanium, 2-5 parts of nickel, 3-8 parts of cobalt oxide, 0.2-0.8 parts of vanadium, 8-14 parts of chromium.
As to further improvement of the present invention, described elastic rubber layer 12 is made up of TPV material.
As to further improvement of the present invention, described stainless steel layer 11 and the thickness ratio of high anti-corrosion alloy steel layer 13
For 2：5.
The ripple tube wall of the high anti-corrosion alloy steel expansion joint of the invention is three-decker, and outermost layer is stainless steel layer, most
Internal layer is high anti-corrosion alloy steel layer, and an elastic rubber layer, high anti-corrosion alloy are additionally provided between stainless steel layer and high anti-corrosion alloy steel layer
Steel layer has extremely strong corrosion resistance, it is possible to reduce corrosion of the internal corrosive fluid to corrugated pipe wall, extends making for expansion joint
Use the life-span.
[contrast experiment]
5 expansion joints of the invention and 5 bellows expansion joints conventional at present are taken to carry out contrast experiment.10 expansion joints are numbered
And insert experiment pipeline simultaneously, concentration is passed through for 25% acidic corrosive solution in experimental channel and is circulated, and circulation time is
36 hours；Circulation releases the acidic corrosive solution in pipeline after terminating, and continues to be passed through the alkaline corrosion that concentration is 25% molten
Liquid is simultaneously circulated, and circulation time is 36 hours.Circulation releases alkali lye after terminating, and non-metal expansion joint is dismantled and carried out
Contrast test, it is as a result as follows：
Test result shows：The high anti-corrosion alloy steel expansion joint of the present invention using more stablizing, uses the longevity in a corrosive environment
Life is longer.
Only illustrate the mentality of designing of the present invention in one embodiment above, in the case where system allows, the present invention can
To expand to external more functional modules simultaneously, so as to extend its function to greatest extent.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
The change or replacement expected without creative work, should all be included within the scope of the present invention.Therefore, it is of the invention
Protection domain should be determined by the scope of protection defined in the claims.
Claims (3)
1. a kind of high anti-corrosion alloy steel expansion joint（1）, it is characterised in that include a bellows（10）, bellows（10）Two ends
A first flange is connected respectively（20）With a second flange（30）, first flange（20）And second flange（30）Between connect many 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）；
The high anti-corrosion alloy steel layer（13）Formed by the raw material melting of following parts by weight：115-120 parts of High Purity Steel, aluminium 16-22
Part, 3-6 parts of magnesium, 1-3 parts of titanium, 2-5 parts of nickel, 3-8 parts of cobalt oxide, 0.2-0.8 parts of vanadium, 8-14 parts of chromium.
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 |
|---|---|---|---|
| CN201710461013.2A CN107131381A (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 |
|---|---|---|---|
| CN201710461013.2A CN107131381A (en) | 2017-06-18 | 2017-06-18 | High anti-corrosion alloy steel expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107131381A true CN107131381A (en) | 2017-09-05 |
Family
ID=59734714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710461013.2A Pending CN107131381A (en) | 2017-06-18 | 2017-06-18 | High anti-corrosion alloy steel expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107131381A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19633158A1 (en) * | 1996-08-17 | 1998-02-19 | Stenflex Rudolf Stender Gmbh | Device for compensating for the movement of two pipes to be connected in a pressure-tight manner and method for their production |
| CN101089446A (en) * | 2007-07-05 | 2007-12-19 | 滕州市绿原机械制造有限责任公司 | Polymer composite corrugated expansion joint |
| CN201401566Y (en) * | 2009-05-08 | 2010-02-10 | 范韵 | Novel tap-water pipe |
| CN102829280A (en) * | 2012-08-24 | 2012-12-19 | 秦皇岛北方管业有限公司 | Compound expansion joint capable of resisting strong corrosive medium and preparation method |
| CN204922267U (en) * | 2015-09-01 | 2015-12-30 | 泰州市汇宇不锈钢有限公司 | Compound nonrust steel pipe |
-
2017
- 2017-06-18 CN CN201710461013.2A patent/CN107131381A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19633158A1 (en) * | 1996-08-17 | 1998-02-19 | Stenflex Rudolf Stender Gmbh | Device for compensating for the movement of two pipes to be connected in a pressure-tight manner and method for their production |
| CN101089446A (en) * | 2007-07-05 | 2007-12-19 | 滕州市绿原机械制造有限责任公司 | Polymer composite corrugated expansion joint |
| CN201401566Y (en) * | 2009-05-08 | 2010-02-10 | 范韵 | Novel tap-water pipe |
| CN102829280A (en) * | 2012-08-24 | 2012-12-19 | 秦皇岛北方管业有限公司 | Compound expansion joint capable of resisting strong corrosive medium and preparation method |
| CN204922267U (en) * | 2015-09-01 | 2015-12-30 | 泰州市汇宇不锈钢有限公司 | Compound nonrust steel pipe |
Non-Patent Citations (1)
| Title |
|---|
| 吴耀伟: "《供热通风与建筑给排水工程施工技术》", 31 July 2001, 哈尔滨工业大学出版社 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170905 |