CN202756831U - Composite expansion joint resistant to highly corrosive media - Google Patents
Composite expansion joint resistant to highly corrosive media Download PDFInfo
- Publication number
- CN202756831U CN202756831U CN 201220421629 CN201220421629U CN202756831U CN 202756831 U CN202756831 U CN 202756831U CN 201220421629 CN201220421629 CN 201220421629 CN 201220421629 U CN201220421629 U CN 201220421629U CN 202756831 U CN202756831 U CN 202756831U
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- CN
- China
- Prior art keywords
- ester resin
- vinyl ester
- glass flake
- resin glass
- expansion joint
- 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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- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Laminated Bodies (AREA)
Abstract
A composite expansion joint resistant to highly corrosive media comprises a corrugated pipe and connecting short pipes arranged at two ends of the corrugated pipe. After improved, the corrugated pipe is in composite layer structure which is composed of a metal substrate, a vinyl ester resin glass flake cement gum primer layer, a vinyl ester resin glass flake cement gum layer and a vinyl ester resin glass flake cement gum finishing coat layer which are sequentially arranged from outside to inside. According to the composite expansion joint resistant to the highly corrosive media, vinyl ester resin glass flake cement gum and corresponding primer and finishing coat are coated on the inner wall of the stainless steel substrate of the corrugated pipe, at the same time that the compensation ability of the expansion joint in absorbing heat of a pipeline is maintained, the characteristic, strong resistance to corrosive media such as acid and alkali, of the vinyl ester resin glass flake cement gum is utilized so that corrosion resistance ability of the corrosion resistant expansion joint is greatly improved, service life of the corrosion resistant expansion joint is greatly prolonged, operation cost of industrial pipelines is reduced, and potential safety hazards of the pipelines are eliminated.
Description
Technical field
The utility model relates to a kind of pipe network parts, the composite expanded joint of compound ethylene base ester resin scale clay on metal base particularly, metal conduit technical field.
Background technique
In the production process of the industrial fields such as petroleum gas, petrochemical industry, chlor-alkali, weaving, chemical fibre, there are the strong corrosive media effects such as acid, alkali, particularly mostly be greatly salt, owing to reasons such as deliquescence, crystallization, infiltrations, steel structure and all kinds of craft piping equipment are produced very serious corrosion.Metal base is widely used at industrial field as anticorrosive, acid resistant alkali, exotic material.Particularly 300 serial Austenitic Stainless Steels in industrial technology pipeline piping technology as the expansion joint of extraction duct heat compensating unit, because of its technology maturation, reasonable price, ample supply of commodities on the market, therefore, all adopt the design of 300 series stainless steel sheet materials more than 90%, make its core parts bellows, wherein the expansion joint take 304 stainless steels as base material accounts for 60 ~ 70% of stainless steel expansion joint total amount.Yet 304 stainless steels are under the heavy ion long-term corrosions such as atmospheric acid alkali salt, usually because environmental corrosion and pipeline technology medium, working pressure, pipe temperature effect produce thermal stress corrosion (pitting corrosion, intergranular corrosion and stress corrosion), greatly reduce the working life of expansion joint.This has not only strengthened the conduit running cost, brings hidden danger also for the industrial pipeline safe operation.
The model utility content
Technical problem to be solved in the utility model is: provide a kind of take metal as base material, apply the composite expanded joint of the anti-strong corrosive medium of compound ethylene base ester plexiglas scale clay.
The alleged problem of the utility model is solved by following technological scheme:
A kind of composite expanded joint of anti-strong corrosive medium, it comprises bellows and the connection short tube that is connected the bellows two ends, specialization is: described bellows is lamination layer structure, and it is followed successively by metal base, vinyl ester resin glass flake plasticine prime coat, vinyl ester resin glass flake plasticine layer and vinyl ester resin glass flake plasticine top coat layer from outside to inside.
The composite expanded joint of above-mentioned anti-strong corrosive medium, described vinyl ester resin glass flake plasticine prime coat is coated in the internal surface of metal base, and its thickness is 60-80 μ m; Described vinyl ester resin glass flake plasticine layer is coated in vinyl ester resin glass flake plasticine prime coat surface, and its thickness is the 0.6-1.2 millimeter; Described vinyl ester resin glass flake plasticine top coat layer is coated in vinyl ester resin glass flake plasticine layer surface, and its thickness is 60-80 μ m.
The utility model produces the thermal stress burn into for a long time for type metal expansion joint under strong anticorrosion medium effect has reduced the problem in expansion joint working life and has improved, take metal bellows as base material, at inner wall of metal tube successively coating ethylene base ester plexiglas scale clay bottom lacquer coating, vinyl ester resin glass flake plasticine layer and vinyl ester resin glass flake plasticine topcoat.Said structure, when keeping expansion joint extraction duct thermal compensation ability, utilize the vinyl ester resin glass flake plasticine to tolerate by force the characteristic of the Korrosionsmediums such as acid, alkali, can greatly improve anticorrosion expansion joint anti-corrosion capacity and working life performance, reduce industrial pipeline operating cost, eliminate pipe safety hidden danger.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the partial enlarged view at Figure 1A place.
Attached number in the figure is expressed as follows: connect short tube 1.; 2. bellows; 2-1. metal base; 2-2. vinyl ester resin glass flake plasticine prime coat; 2-3. vinyl ester resin glass flake plasticine layer; 2-4. vinyl ester resin glass flake plasticine top coat layer.
Embodiment
Referring to Fig. 1, Fig. 2, the utility model comprises bellows 2, is provided with at the two ends of bellows 2 to connect short tube 1.For improving the working life of expansion joint under the strong corrosive medium condition, the utility model is to the core component of expansion joint--and the structure of bellows is improved.Described bellows 2 is lamination layer structure, and it is followed successively by metal base 2-1, vinyl ester resin glass flake plasticine prime coat 2-2, vinyl ester resin glass flake plasticine layer 2-3 and vinyl ester resin glass flake plasticine top coat layer 2-4 from outside to inside.The utility model is selected vinyl ester resin glass flake plasticine and corresponding priming paint, finish paint, be coated in the stainless steel substrate layer inwall of bellows, the vinyl ester resin glass flake plasticine has the Korrosionsmedium performances such as very tolerance acid, alkali, the working life that therefore can greatly improve bellows.
The utility model is when improving its anti-strong antiseptic power, fully take into account the characteristic that needs to keep expansion joint extraction duct thermal compensation ability, therefore, determine that the thickness of each construction layer is as follows: the thickness that is coated in the vinyl ester resin glass flake plasticine prime coat 2-2 of metal base 2-1 internal surface is 60-80 μ m; The thickness that is coated in the vinyl ester resin glass flake plasticine layer 2-3 on vinyl ester resin glass flake plasticine prime coat 2-2 top layer is the 0.6-1.2 millimeter; The vinyl ester resin glass flake plasticine top coat layer 2-4 thickness that is coated in coating ethylene base ester plexiglas scale clay layer 2-3 surface is 60-80 μ m.
Claims (2)
1. the composite expanded joint of an anti-strong corrosive medium, it comprises bellows (2) and the connection short tube (1) that is connected the bellows two ends, it is characterized in that: described bellows (2) is lamination layer structure, and it is followed successively by metal base (2-1), vinyl ester resin glass flake plasticine prime coat (2-2), vinyl ester resin glass flake plasticine layer (2-3) and vinyl ester resin glass flake plasticine top coat layer (2-4) from outside to inside.
2. the composite expanded joint of anti-strong corrosive medium according to claim 1, it is characterized in that: described vinyl ester resin glass flake plasticine prime coat (2-2) is coated in the internal surface of metal base (2-1), and its thickness is 60-80 μ m; Described vinyl ester resin glass flake plasticine layer (2-3) is coated in vinyl ester resin glass flake plasticine prime coat surface, and its thickness is the 0.6-1.2 millimeter; Described vinyl ester resin glass flake plasticine top coat layer (2-4) is coated in vinyl ester resin glass flake plasticine layer surface (2-3), and its thickness is 60-80 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220421629 CN202756831U (en) | 2012-08-24 | 2012-08-24 | Composite expansion joint resistant to highly corrosive media |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220421629 CN202756831U (en) | 2012-08-24 | 2012-08-24 | Composite expansion joint resistant to highly corrosive media |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202756831U true CN202756831U (en) | 2013-02-27 |
Family
ID=47736014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220421629 Expired - Fee Related CN202756831U (en) | 2012-08-24 | 2012-08-24 | Composite expansion joint resistant to highly corrosive media |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202756831U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2012
- 2012-08-24 CN CN 201220421629 patent/CN202756831U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102829280B (en) * | 2012-08-24 | 2015-02-04 | 秦皇岛北方管业有限公司 | Compound expansion joint capable of resisting strong corrosive medium and preparation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20200824 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |