CN201891953U - Lining type steel-plastic composite pipe - Google Patents
Lining type steel-plastic composite pipe Download PDFInfo
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- CN201891953U CN201891953U CN2010206534461U CN201020653446U CN201891953U CN 201891953 U CN201891953 U CN 201891953U CN 2010206534461 U CN2010206534461 U CN 2010206534461U CN 201020653446 U CN201020653446 U CN 201020653446U CN 201891953 U CN201891953 U CN 201891953U
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- plastic composite
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- steel pipe
- pipe
- protective layer
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Abstract
The utility model discloses a lining type steel-plastic composite pipe, which belongs to a technology of a fluid transportation device and mainly solves the problem of low corrosion resistance at the end of the composite pipe in the prior art. The lining type steel-plastic composite pipe comprises a steel pipe and an inner wall protection layer which is lined on the inner wall of a steel pipe; an end protection layer is also coated at the end of the steep pipe. The end protection layer is turned over to the outer wall of the steel pipe and extends by at least 1mm, and the axial cross section of the end of the whole composite pipe is in a U shape. The utility model has a simple structure and an obvious effect and is convenient to implement. The corrosion problem at the end of the composite pipe in the prior art is effectively solved so that the practical value of the lining type steel-plastic composite pipe is greatly promoted.
Description
Technical field
The utility model relates to a kind of steel-plastic composite pipe, specifically, relates to a kind of internal lining steel plastic composite of strap end portion protection.
Background technique
Common plastic-lined steel plastic composite, its structure generally are that the plastics that are lining on the steel pipe inwall in being reached by steel pipe constitute, and this structure can solve steel pipe effectively when carrying corrosive fluid, the corrosion protection problem of its inwall.But what existing structure can be protected only is the inwall of steel pipe, and the end of steel pipe is but exposed fully, without any the protection facility.This composite pipe the situation that steel tube end part contacts with corrosive fluid very easily occurs in connecting into the pipeline using process, not only the problem that may cause pipeline seal failure, steel tube end part to be corroded; Even steel pipe may occur and separate with plastics; and then make plastic lining lose the problem of protective function; and in a single day the plastics on the steel pipe inwall come off, and will shrink under the effect of self cohesive force so; to make plastics and separating of steel pipe of further aggravation and shrink; in fluid delivery process, plastics are shed to a certain degree, just may cause line clogging; thereby cause line transportation to interrupt, even great contingency occurs.
In order to address the above problem, two kinds of methods are arranged at present: 1. mould the end protection steel-plastic composite pipe that layer is routed up for T shape in, but this composite pipe but can only be applicable to the flange connections line.Since the plastic-lined steel plastic composite can not weldering property, make that this flange composite pipe can only be in manufacturer according to the gage length manufacturing, in the pipeline construction process, the length of installation of pipeline often is difficult to accurately determine, the flange pipeline connects to belong to and is rigidly connected in addition, very high to the required precision of pipeline length of installation, therefore, the use of this flange composite pipe is greatly limited.2. spray various resin emulsion paints at steel tube end part, in the hope of solve that steel tube end part is corroded and in mould the problem of layering, there is following problem in this method in actual mechanical process: 1) Chang Yong plastic lining is PE or PPR, be difficult to find the resin material that can effectively adhere to these class plastics, if the adhesive material performance is too poor, so bonding effect will can not get ensureing, in to mould layering still inevitable; 2) all there is the problem of passing in time and wearing out in various adhesive resins, and resin is in a single day aging, will make coating become fragile, come off, and steel tube end part still can not get protection.Therefore, shoot out resin at steel tube end part and come the use value of bonding plastics not high, can not satisfy the development need of modern society.
The model utility content
The purpose of this utility model is to provide a kind of internal lining steel plastic composite, solves problems of the prior art, solve simultaneously the anticorrosion problem of steel tube end part and in mould the problem of layer layering, steel-plastic composite pipe is protected in all directions.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of internal lining steel plastic composite comprises steel pipe, and in be lining in inner wall protection layer on the steel pipe inwall, described steel tube end part also is coated with the end protective layer.
In order to improve the protection effect to steel tube end part, described end protective layer is directly turn on the outer wall of steel pipe at steel tube end part by the inner wall protection layer and also extends at least 10 millimeters, thereby makes the axial cross section of whole composite pipe end be " U " shape.
Further; in steel pipe, mould layer and steel pipe layering; described end protective layer and inner wall protection layer are structure as a whole, and promptly in fact the end protective layer adopts the inner wall protection layer to prolong upset to coat the mode that whole steel tube end parts turn to outer surface of steel tube again and form.
In order to solve bonding problem, inner wall protection layer described in the utility model and end protective layer are the plastic tube of the prefabricated outer surface belt heat-fusing glue layer of coextrude.
Because the end protective layer is actually the extension of inner wall protection layer, so both Manufacturing material are also identical, promptly described end protective layer is made by the PE-RT or the NZPE-RT of PE, PPR, band oxidation prevention layer, and the thickness of described end protective layer is at least 1 millimeter.
Described steel pipe is seamless steel pipe, straight welding steel pipe or Coating Steel Pipe.
Optimum scheme of the present utility model is: the described end length of protective layer on outer surface of steel tube is 10～25 millimeters, and the thickness of described end protective layer is 1～2 millimeter.
Compared with prior art, the utlity model has following beneficial effect:
1. the utility model is simple in structure, and it is convenient to realize.Whole composite pipe remain by steel pipe and in mould layer and constitute, structure is very simple, and only need to have now composite pipe in mould layer and reserve a certain-length, carrying out twice upset again can coat the steel pipe two end part fully, production and processing is very convenient.
2. the utility model does not increase product cost substantially, and the protection angle is very comprehensive, and effect is very remarkable.Inner wall protection layer and end protective layer are structure as a whole, during without any connecting seam, do not have sealing problem, and the end protective layer turn on the outer surface of steel tube, that has stopped promptly that fluid contacts with steel pipe is possible, moulds the problem of layer layering in not worrying again.
3. the utility model can adapt to various flexible connection modes.Connect as clamp band type, the I﹠M of pipeline is very convenient; And adopt telescopic sleeve plug-in type to flexibly connect, it is highly beneficial to overcome expanding with heat and contract with cold of pipeline for long-distance transport pipes.
Description of drawings
Fig. 1 is a cross section structure schematic representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
Embodiment
As shown in Figure 1, a kind of internal lining steel plastic composite comprises steel pipe 1, and in be lining in inner wall protection layer on steel pipe 1 inwall, described steel tube end part 1 also is coated with and the be connected as a single entity end protective layer 2 of structure of inner wall protection layer.This end protective layer 2 turn on steel pipe 1 outer wall and extends 10～25 millimeters, makes end protective layer 2 and the inner wall protection layer segment that is positioned at the end form " U " shape structure jointly.
Above-mentioned end protective layer 2 is formed on the end and the outer surface of steel pipe in advance by coextrude, and its Manufacturing material can be the PE-RT or the NZPE-RT of PE, PPR, band oxidation prevention layer, and thickness is 1 ~ 2 millimeter.
Described steel pipe 1 is seamless steel pipe, straight welding steel pipe or Coating Steel Pipe.
During production; only need to adopt conventional inner lining of steel pipe to mould after technology finishes inner lining of steel pipe and mould; utilize the end to reserve unnecessary inner wall protection layer; adopt special-purpose turning tool that the inner wall protection layer that steel tube end part grows part is turn to steel tube end part and outer surface thereof; form the end protective layer; then steel pipe 1 is heated, end protective layer 2 is adhered on the steel pipe 1 securely, very convenient.
The foregoing description only is optimum embodiment of the present utility model, and protection domain of the present utility model includes but not limited to the foregoing description.
Claims (8)
1. an internal lining steel plastic composite comprises steel pipe (1), and in be lining in inner wall protection layer on steel pipe (1) inwall, it is characterized in that described steel tube end part also is coated with end protective layer (2).
2. a kind of internal lining steel plastic composite according to claim 1 is characterized in that, described end protective layer (2) directly turn on steel pipe (1) outer wall by inner wall protection layer extension part and extends at least 10 millimeters.
3. a kind of internal lining steel plastic composite according to claim 2 is characterized in that, the length of described end protective layer (2) on steel pipe (1) outer surface is 10 ~ 25 millimeters.
4. a kind of internal lining steel plastic composite according to claim 2 is characterized in that, the axial cross section of described composite pipe end is " U " shape.
5. a kind of internal lining steel plastic composite according to claim 4 is characterized in that described protective layer (2) is made by the PE-RT or the NZPE-RT of PE, PPR, band oxidation prevention layer.
6. a kind of internal lining steel plastic composite according to claim 5 is characterized in that the thickness of described end protective layer (2) is at least 1 millimeter.
7. a kind of internal lining steel plastic composite according to claim 6 is characterized in that the thickness of described end protective layer (2) is 1 ~ 2 millimeter.
8. according to any described a kind of internal lining steel plastic composite in the claim 1～7, it is characterized in that described steel pipe (1) is seamless steel pipe, straight welding steel pipe or Coating Steel Pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206534461U CN201891953U (en) | 2010-12-12 | 2010-12-12 | Lining type steel-plastic composite pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206534461U CN201891953U (en) | 2010-12-12 | 2010-12-12 | Lining type steel-plastic composite pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201891953U true CN201891953U (en) | 2011-07-06 |
Family
ID=44221429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206534461U Expired - Fee Related CN201891953U (en) | 2010-12-12 | 2010-12-12 | Lining type steel-plastic composite pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201891953U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278546A (en) * | 2011-07-19 | 2011-12-14 | 广州海鸥卫浴用品股份有限公司 | Copper plastic compound pipe |
| CN103216689A (en) * | 2013-04-25 | 2013-07-24 | 成都国木科技有限公司 | Connection pipe fitting |
| CN103343843A (en) * | 2013-08-02 | 2013-10-09 | 南通亨特管业有限公司 | Novel steel-plastic composite pipe |
| CN103453238A (en) * | 2013-09-05 | 2013-12-18 | 广东联塑科技实业有限公司 | Plastic-lined compound pipe fitting and manufacturing method thereof |
| CN104405975A (en) * | 2014-09-02 | 2015-03-11 | 吉林钰翎珑钢管钢构制造有限公司 | Steel pipe with bell and spigot joints |
| CN105314249A (en) * | 2015-09-25 | 2016-02-10 | 内蒙古宇亚科技股份有限公司 | Continuous longitudinal double-deep-rib high-strength angle bead and manufacturing method of double deep ribs of angle bead |
| CN107091380A (en) * | 2017-05-26 | 2017-08-25 | 金川集团股份有限公司 | A kind of steel lining PE pipelines and preparation method thereof |
| CN108973105A (en) * | 2018-08-16 | 2018-12-11 | 宜昌中南精密钢管有限公司 | A kind of forming frock and method of inner liner stainless steel multiple tube |
| CN110285271A (en) * | 2019-07-26 | 2019-09-27 | 湖南振辉管业有限公司 | A kind of composite metal-plastic pipe port enhancing face seals and preparation method thereof |
| CN112571838A (en) * | 2020-10-07 | 2021-03-30 | 安徽艾瑞德农业装备股份有限公司 | Anti-corrosion plastic-lined steel pipe |
-
2010
- 2010-12-12 CN CN2010206534461U patent/CN201891953U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278546A (en) * | 2011-07-19 | 2011-12-14 | 广州海鸥卫浴用品股份有限公司 | Copper plastic compound pipe |
| CN103216689A (en) * | 2013-04-25 | 2013-07-24 | 成都国木科技有限公司 | Connection pipe fitting |
| CN103343843A (en) * | 2013-08-02 | 2013-10-09 | 南通亨特管业有限公司 | Novel steel-plastic composite pipe |
| CN103453238A (en) * | 2013-09-05 | 2013-12-18 | 广东联塑科技实业有限公司 | Plastic-lined compound pipe fitting and manufacturing method thereof |
| CN103453238B (en) * | 2013-09-05 | 2016-03-30 | 广东联塑科技实业有限公司 | A kind of plastic-lined composite pipe fitting and manufacture method thereof |
| CN104405975A (en) * | 2014-09-02 | 2015-03-11 | 吉林钰翎珑钢管钢构制造有限公司 | Steel pipe with bell and spigot joints |
| CN105314249A (en) * | 2015-09-25 | 2016-02-10 | 内蒙古宇亚科技股份有限公司 | Continuous longitudinal double-deep-rib high-strength angle bead and manufacturing method of double deep ribs of angle bead |
| CN107091380A (en) * | 2017-05-26 | 2017-08-25 | 金川集团股份有限公司 | A kind of steel lining PE pipelines and preparation method thereof |
| CN108973105A (en) * | 2018-08-16 | 2018-12-11 | 宜昌中南精密钢管有限公司 | A kind of forming frock and method of inner liner stainless steel multiple tube |
| CN108973105B (en) * | 2018-08-16 | 2023-10-24 | 宜昌中南精密钢管有限公司 | Forming tool and method for lining stainless steel composite pipe |
| CN110285271A (en) * | 2019-07-26 | 2019-09-27 | 湖南振辉管业有限公司 | A kind of composite metal-plastic pipe port enhancing face seals and preparation method thereof |
| CN112571838A (en) * | 2020-10-07 | 2021-03-30 | 安徽艾瑞德农业装备股份有限公司 | Anti-corrosion plastic-lined steel pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110706 Termination date: 20111212 |