CN207261843U - A kind of steel lining polyfluortetraethylecomposite composite pipe structure - Google Patents
A kind of steel lining polyfluortetraethylecomposite composite pipe structure Download PDFInfo
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- CN207261843U CN207261843U CN201720987203.3U CN201720987203U CN207261843U CN 207261843 U CN207261843 U CN 207261843U CN 201720987203 U CN201720987203 U CN 201720987203U CN 207261843 U CN207261843 U CN 207261843U
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- steel
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- connecting flange
- tube construction
- polyolefin
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Abstract
The utility model discloses a kind of steel lining polyfluortetraethylecomposite composite pipe structure.The both ends of steel-tube construction layer and steel-tube construction layer that it includes outer layer are welded with connecting flange, have the corrosion-inhibiting coating of steel-tube construction layer and connecting flange integral coating outside steel-tube construction layer and connecting flange, the joint face of connecting flange is provided with annular groove, the joint face of steel-tube construction layer and connecting flange has the plastic layer for directly coating steel-tube construction layer and connecting flange, compound coating is gone back in plastic layer polyolefin undercoating, and plastic layer and polyolefin undercoating are compounded in annular groove.With the above structure; after the connection of 2-section pipe road etch-proof protective effect can be played by compound plastic layer and polyolefin undercoating and the composite bed improves leakproofness being used as etch-proof function and be also used as sealing structure at the same time; so that the compactness of pipeline connection is very high; make destruction and corrosion of the inner layer composite material layer from positive pressure; avoid and come off out of steel pipe, extend service life.
Description
Technical field
The present invention relates to a kind of line pipe material, specifically a kind of steel lining polyfluortetraethylecomposite composite pipe structure.
Background technology
Steel lining multiple tube is combined by plastic tube and steel pipe, wherein, flanged (FLGD) steel pipe is outer as reinforcement sheath
Layer, internal layer of the plastic tube as matrix tubing, the matrix tubing of internal layer along the outer layer mouth of pipe extend to end face of flange outer rim formed it is whole
The pipe-line equipment of body, is corrosive liquid yet with the pipeline mainly for delivery of concentrated nitric acid and chloroazotic acid, existing multiple tube
Although certain corrosion resistance can be reached, at the flanged ends of tubing, due to need into be about to adjacent tube body into
Row connects, and has gap between its junction, hence in so that fluid easily damages its gap location, so that matrix tubing
Start to come off out of steel pipe in junction, have impact on service life.
The content of the invention
The technical problem to be solved in the present invention provide one kind can improve junction with reference to power, so as to ensureing that tube body is prolonged resistance to
Steel lining composite pipe structure.
In order to solve the above-mentioned technical problem, steel lining polyfluortetraethylecomposite composite pipe of the invention, includes the steel-tube construction of outer layer
The both ends of layer and steel-tube construction layer are welded with connecting flange, have outside steel-tube construction layer and connecting flange by steel-tube construction
The corrosion-inhibiting coating of layer and connecting flange integral coating, the joint face of connecting flange are provided with annular groove, steel-tube construction layer and company
The joint face of acting flange has the plastic layer for directly coating steel-tube construction layer and connecting flange, and going back compound coating in plastic layer has
Polyolefin undercoating, plastic layer and polyolefin undercoating are compounded in annular groove.
The connecting pin of the steel-tube construction layer and connecting flange is provided with arc angling.
Plastic layer and the polyolefin undercoating is compounded in annular groove processus aboralis for the inner cavity of annular groove.
After above-mentioned structure, since the joint face of connecting flange is provided with annular groove, in plastic layer and polyolefin
Coating is compounded in annular groove and plastic layer and polyolefin undercoating are compounded in annular groove processus aboralis for annular groove
Inner cavity, thus 2-section pipe road connection after etch-proof protection can be played by compound plastic layer and polyolefin undercoating
Act on and the composite bed improves leakproofness being also used as sealing structure at the same time as etch-proof function so that pipeline
The compactness of connection is very high, makes destruction and corrosion of the inner layer composite material layer from positive pressure, avoids and come off out of steel pipe, prolong
Service life is grown.
Brief description of the drawings
Fig. 1 is the schematic cross-sectional view of steel lining polyfluortetraethylecomposite composite pipe structure of the present invention；
Fig. 2 is the A-A schematic cross-sectional views of Fig. 1.
Embodiment
With reference to the accompanying drawings and detailed description, the steel lining polyfluortetraethylecomposite composite pipe structure of the present invention is made further
Describe in detail.
As shown in the figure, the steel lining polyfluortetraethylecomposite composite pipe structure of the present invention, includes the steel-tube construction layer 1 and steel of outer layer
The both ends of pipe structure sheaf 1 are welded with connecting flange 2, have outside steel-tube construction layer 1 and connecting flange 2 by steel-tube construction layer 1
With the corrosion-inhibiting coating 3 of 2 integral coating of connecting flange, the joint face of connecting flange 2 is provided with annular groove, 1 He of steel-tube construction layer
The joint face of connecting flange 2 has the plastic layer 4 that directly coats steel-tube construction layer 1 and connecting flange 2, also multiple in plastic layer 4
Conjunction is coated with polyolefin undercoating 5, and plastic layer 4 and polyolefin undercoating 5 are compounded in annular groove.
Further, the connecting pin of described steel-tube construction layer 1 and connecting flange 2 is provided with arc angling 6, from there through
Arc-shaped transition reduces the degree of wear, and plastic layer 4 and polyolefin undercoating 5 are compounded in annular groove processus aboralis for annular groove
Inner cavity, good sealing performance played by certain elastic deformation after the connection of two segment pipes.
Claims (3)
1. a kind of steel lining polyfluortetraethylecomposite composite pipe structure, includes the steel-tube construction layer of outer layer（1）And steel-tube construction layer（1）'s
Both ends are welded with connecting flange（2）, it is characterised in that：The steel-tube construction layer（1）And connecting flange（2）It is outer to have steel
Pipe structure sheaf（1）And connecting flange（2）The corrosion-inhibiting coating of integral coating（3）, the connecting flange（2）Joint face be provided with ring
Connected in star, the steel-tube construction layer（1）And connecting flange（2）Joint face have steel-tube construction layer（1）And connecting flange（2）
The plastic layer directly coated（4）, the plastic layer（4）Inside going back compound coating has polyolefin undercoating（5）, the plastic layer（4）
With polyolefin undercoating（5）It is compounded in annular groove.
2. steel lining polyfluortetraethylecomposite composite pipe structure described in accordance with the claim 1, it is characterised in that：The steel-tube construction layer
（1）And connecting flange（2）Connecting pin be provided with arc angling（6）.
3. according to the steel lining polyfluortetraethylecomposite composite pipe structure described in claim 1 or 2, it is characterised in that：The plastic layer（4）
With polyolefin undercoating（5）Processus aboralis is compounded in annular groove for the inner cavity of annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720987203.3U CN207261843U (en) | 2017-08-09 | 2017-08-09 | A kind of steel lining polyfluortetraethylecomposite composite pipe structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720987203.3U CN207261843U (en) | 2017-08-09 | 2017-08-09 | A kind of steel lining polyfluortetraethylecomposite composite pipe structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207261843U true CN207261843U (en) | 2018-04-20 |
Family
ID=61924643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720987203.3U Active CN207261843U (en) | 2017-08-09 | 2017-08-09 | A kind of steel lining polyfluortetraethylecomposite composite pipe structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207261843U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355602A (en) * | 2017-08-09 | 2017-11-17 | 镇江春环密封件集团有限公司 | A kind of steel lining polyfluortetraethylecomposite composite pipe structure |
-
2017
- 2017-08-09 CN CN201720987203.3U patent/CN207261843U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355602A (en) * | 2017-08-09 | 2017-11-17 | 镇江春环密封件集团有限公司 | A kind of steel lining polyfluortetraethylecomposite composite pipe structure |
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