CN101943307A - Anticorrosive structure penetrating through external anticorrosive layer of pipe and preparation method thereof - Google Patents
Anticorrosive structure penetrating through external anticorrosive layer of pipe and preparation method thereof Download PDFInfo
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- CN101943307A CN101943307A CN 201010257256 CN201010257256A CN101943307A CN 101943307 A CN101943307 A CN 101943307A CN 201010257256 CN201010257256 CN 201010257256 CN 201010257256 A CN201010257256 A CN 201010257256A CN 101943307 A CN101943307 A CN 101943307A
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Abstract
The invention discloses an anticorrosive structure penetrating through an external anticorrosive layer of a pipe. The structure mainly comprises a steel pipe (1) and an anticorrosive layer (2) which is covered on a surface layer of the steel pipe (1), and is characterized in that: a wear-resisting protection layer (3) is attached to the external surface of the anticorrosive layer (2). The invention also discloses a method for preparing the anticorrosive structure penetrating through the external anticorrosive layer of the pipe. As the wear-resisting protection layer is attached to the external surface of the anticorrosive layer of the steel pipe, the damage defect of the external anticorrosive layer of a buried pipeline which is easily caused by the friction and extrusion of hard rocks in a ground layer in the penetration process of the conventional buried pipeline polyolefin composite anticorrosive structure can be effectively overcome.
Description
Technical field
The present invention relates to a kind of anticorrosion structure, be meant that specifically a kind of pipeline passes through anticorrosion structure of external anti-corrosion layer and preparation method thereof.
Background technique
People often can run into obstacles such as building, highway, railway, river, lake in the process that various buried pipelines (as natural gas line, petroleum pipeline) are installed at present.In order to ensure installing smoothly, the workmen can adopt various construction method for crossing such as orientation is passed through, push pipe passes through.Generally, buried pipeline all adopts two-layer or three strata alkene composite anti-corrosive structures, and the scratch resistance performance of the anticorrosive coat of these anticorrosion structures is relatively poor, in buried pipeline crossing construction process, be subjected to friction, the extruding of solid rock in the stratum easily, cause the anticorrosive coat breakage of buried pipeline outside.In case and these anticorrosive coats are impaired, just can't repair, therefore make buried pipeline have potential security risk.
Summary of the invention
The outer anticorrosion structure that the objective of the invention is to overcome present buried pipeline is subjected to the rock frictional test extruding to cause damaged defective in crossing process easily, provide a kind of not only simple in structure, and can prevent effectively that the pipeline of the anticorrosive coat breakage of buried pipeline from passing through the anticorrosion structure of external anti-corrosion layer.
Another object of the present invention provides the preparation method that a kind of pipeline passes through the anticorrosion structure of external anti-corrosion layer.
Purpose of the present invention is achieved through the following technical solutions: a kind of pipeline passes through the anticorrosion structure of external anti-corrosion layer, mainly is made of steel pipe and the anticorrosive coat that covers this outer surface of steel tube, and the outer surface at anticorrosive coat also is coated with one deck wear-resistant protective layer simultaneously.
Further, described anticorrosive coat is the polyolefin combined anti-corrosion layer, and described wear-resistant protective layer is then by fibre reinforced materials, or coating or adhesive tape formation.
In order to ensure using effect, the thickness of this wear-resistant protective layer is 100 μ m～3000 μ m, and fibre reinforced materials is preferentially by 100～1500g/m
2Fibre cloth and epoxy viscose be made.
Described fibre cloth is made by any one or its combination in any in fiber glass material, carbon fibre material, basalt fiber material, aramid fibre material and the superhigh molecular weight polyethylene fibers material.
A kind of pipeline passes through the preparation method of the anticorrosion structure of external anti-corrosion layer, mainly may further comprise the steps:
(a) at first change the surface polarity of anticorrosive coat;
(b) apply one deck epoxy viscose on this anticorrosive coat, twine fibre cloth then, fiber selvedge brushing epoxy viscose is twined on the limit, makes epoxy viscose fully soak into fibre cloth;
(c) order is twined fibre cloth until requiring length again;
(d) normal temperature was placed 24～48 hours down, solidified fully until epoxy viscose.
Wherein, the surface polarity of the change anticorrosive coat described in the step (a) is meant in this anticorrosive coat surface molecular chain and introduces polar group.
The present invention compares than prior art, has the following advantages and beneficial effect:
(1) not only overall structure is comparatively simple in the present invention, and its working process is also comparatively convenient, so its fabricating cost is lower, is easy to be extended and applied.
(2) the polyolefin composite anti-corrosive structure resistance to marring of traditional buried pipeline is relatively poor, uses the steel round end of Φ 10mm diameter, applies the pressure of 100Kg, can draw and wear the thick polyolefin combined anti-corrosion layer of 2500 μ m.And the present invention is bonded with wear-resistant protective layer at the polyolefin combined anti-corrosion layer outer surface of steel pipe, and this wear-resistant protective layer has excellent scratch resistance performance, uses the steel round end of Φ 2mm diameter, applies the pressure of 100Kg, the scratch depth of wear-resistant protective layer≤300 μ m.Therefore the present invention can effectively overcome existing buried pipeline polyolefin composite anti-corrosive structure causes the outside anticorrosive coat of buried pipeline easily because of friction, the extruding of solid rock in the stratum in crossing process open defect.
(3) interlaminar shearing strength of wear-resistant protective layer of the present invention and polyolefin combined anti-corrosion layer can 〉=1.0Mpa, the interlaminar shearing strength between test wear-resistant protective layer and the polyolefin anticorrosive coat, even up to 3.2Mpa, so its stability is stronger.
Description of drawings
Fig. 1 is a cross-sectional view of the present invention.
Wherein, the name of the reference character in the accompanying drawing is called:
The 1-steel pipe, 2-anticorrosive coat, 3-wear-resistant protective layer.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
Steel pipe 1 of the present invention can be used to carry various liquids and gases, can be in order to ensure this steel pipe 1 by the corrosion of acidity or alkali matter, therefore be coated with the anticorrosive coat 2 that composite polyolefine material or epoxy coating are made at the outer surface of this steel pipe 1.According to the needs of actual conditions, this anticorrosive coat 2 can be chosen arbitrarily, and the present invention preferentially selects for use the polyolefin combined anti-corrosion layer to realize.
In order to prevent in the crossing construction process to damage anticorrosive coat 2, so the present invention also is coated with on the outer surface of this anticorrosive coat 2 by fibre reinforced materials and the compounded wear-resistant protective layer 3 of epoxy viscose.According to the actual needs, this wear-resistant protective layer 3 can be bonded in anticorrosive coat 2 outer surfaces of whole steel pipe 1, also can only be bonded in its certain part, to satisfy the needs of crossing construction.
It is that fibre reinforced materials, coating or the adhesive tape of 100 μ m～3000 μ m realized that described wear-resistant protective layer 3 can adopt thickness separately; also can adopt the combination in any of this fibre reinforced materials, coating and adhesive tape to realize; as forming wear-resistant protective layer 3, perhaps form wear-resistant protective layer 3 or the like by coating and adhesive tape by fibre reinforced materials and coating.In order to ensure using effect, this fibre reinforced materials is preferentially by 100～1500g/m
2Fibre cloth and epoxy viscose be made.
Described coating then adopts any one or its combination in epoxy polymer, the polyurethane to be made; Adhesive tape then adopts photocuring fiber-reinforced tape or water cure fiber-reinforced tape to be made.
For making wear-resistant protective layer 3 outward appearances eye-catching, attractive in appearance, the color of this wear-resistant protective layer 3 can be medium chrome yellow, permanent yellow, phthalocyanine blue etc., determines with demand.
Preparation process of the present invention is as follows:
(a) at first change the surface polarity of anticorrosive coat.The surface polarity of so-called change anticorrosive coat is meant by methods such as existing chemistry, gas thermal oxidation, flame treatment, corona, non-thermal plasma trap, surface modifiers and carries out surface treatment, to destroy the fine and close inertia on anticorrosive coat surface, and in its surface molecular chain, introduce polar group, thereby improve adhesive property.Owing to adopt different man power and material's differences that processing method consumed, so the present invention preferentially adopts on this anticorrosive coat brushing primary coat viscose glue to realize.
(b) apply one deck epoxy viscose on this anticorrosive coat, twine fibre cloth then, fiber selvedge brushing epoxy viscose is twined on the limit, makes epoxy viscose fully soak into fibre cloth.Promptly guarantee all to be coated with between every adjacent two layers fibre cloth and be brushed with epoxy viscose, thereby guarantee to bond together closely between fibre cloth and the fibre cloth by this method.Through the test of reality, by this epoxy viscose, the present invention can guarantee this anticorrosive coat 2 and wear-resistant protective layer 3 interlaminar shearing strength 〉=1.0Mpa at normal temperatures.
Simultaneously, because the type of fibre cloth and epoxy viscose has determined the scratch resistance performance of this fibre reinforced materials to a great extent, therefore fibre cloth of the present invention preferentially is prepared from by any one or its combination in any in fiber glass material, carbon fibre material, basalt fiber material, aramid fibre material and the superhigh molecular weight polyethylene fibers material.Epoxy viscose of the present invention then is made by any one or its combination in any in unsaturated polyester resin, epoxy resin, phenolic resin, vinylite, polyamide resin, the polyurethane resin.
(c) order is twined fibre cloth until requiring length again.The length of this requirement can be whole crossing pipeline anticorrosive coat, also can be its part.
(d) normal temperature was placed 24～48 hours down, solidified fully until epoxy viscose.
As mentioned above, just can well realize the present invention.
Claims (9)
1. a pipeline passes through the anticorrosion structure of external anti-corrosion layer, mainly is made of steel pipe (1) and the anticorrosive coat (2) that covers this steel pipe (1) outer surface, and it is characterized in that: the outer surface at anticorrosive coat (2) also is coated with one deck wear-resistant protective layer (3).
2. a kind of pipeline according to claim 1 passes through the anticorrosion structure of external anti-corrosion layer, it is characterized in that: described anticorrosive coat (2) is the polyolefin combined anti-corrosion layer.
3. a kind of pipeline according to claim 1 passes through the anticorrosion structure of external anti-corrosion layer, it is characterized in that: described wear-resistant protective layer (3) is made by fibre reinforced materials.
4. a kind of pipeline according to claim 1 passes through the anticorrosion structure of external anti-corrosion layer, it is characterized in that: described wear-resistant protective layer (3) is made of coating or adhesive tape.
5. pass through the anticorrosion structure of external anti-corrosion layer according to each described a kind of pipeline of claim 1～4, it is characterized in that: the thickness of described wear-resistant protective layer (3) is 100 μ m～3000 μ m.
6. a kind of pipeline according to claim 3 passes through the anticorrosion structure of external anti-corrosion layer, it is characterized in that: described fibre reinforced materials is by 100～1500g/m
2Fibre cloth and epoxy viscose be made.
7. a kind of pipeline according to claim 6 passes through the anticorrosion structure of external anti-corrosion layer, it is characterized in that: described fibre cloth is made by any one or its combination in any in fiber glass material, carbon fibre material, basalt fiber material, aramid fibre material and the superhigh molecular weight polyethylene fibers material.
8. the preparation method that pipeline passes through the anticorrosion structure of external anti-corrosion layer is characterized in that, mainly may further comprise the steps:
(a) at first change the surface polarity of anticorrosive coat;
(b) apply one deck epoxy viscose on this anticorrosive coat, twine fibre cloth then, fiber selvedge brushing epoxy viscose is twined on the limit, makes epoxy viscose fully soak into fibre cloth;
(c) order is twined fibre cloth until requiring length again;
(d) normal temperature was placed 24～48 hours down, solidified fully until epoxy viscose.
9. a kind of pipeline according to claim 8 passes through the preparation method of the anticorrosion structure of external anti-corrosion layer, it is characterized in that, the surface polarity of the change anticorrosive coat described in the step (a) is meant in this anticorrosive coat surface molecular chain introduces polar group.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010257256 CN101943307A (en) | 2010-08-19 | 2010-08-19 | Anticorrosive structure penetrating through external anticorrosive layer of pipe and preparation method thereof |
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| CN 201010257256 CN101943307A (en) | 2010-08-19 | 2010-08-19 | Anticorrosive structure penetrating through external anticorrosive layer of pipe and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305334A (en) * | 2011-05-20 | 2012-01-04 | 中国石油集团工程设计有限责任公司 | Method for protecting anti-corrosion layer of pipeline during horizontal directional drilling crossing in oil and gas engineering |
| CN103672209A (en) * | 2013-12-05 | 2014-03-26 | 江苏金波新材料科技有限公司 | Novel anti-corrosion and pressure-resistant composite pipe |
| CN104565677A (en) * | 2013-10-24 | 2015-04-29 | 中国石油化工股份有限公司 | Anticorrosion layer protective structure of pipeline of directional drilling crossing section and method for manufacturing anticorrosion layer protective structure |
| CN106947369A (en) * | 2017-04-01 | 2017-07-14 | 石狮华宝新材料工程有限公司 | Composite heavy corrosion protection material and construction technology for burning power plant |
| CN107059618A (en) * | 2017-02-28 | 2017-08-18 | 南京工业大学 | A kind of fiber reinforcement light or water cure prepreg are wrapped band |
| CN107081921A (en) * | 2017-05-27 | 2017-08-22 | 贵州石鑫玄武岩科技有限公司 | A kind of basalt fibre multiple tube and preparation method thereof |
| CN107764155A (en) * | 2016-08-15 | 2018-03-06 | 恩坦华汽车系统（上海）有限公司 | The verification method of skylight viscose glue |
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| JPH01108036A (en) * | 1987-10-22 | 1989-04-25 | Sumitomo Metal Ind Ltd | Heavy corrosion-resistive steel pipe having stopping property of fracture propagation |
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| CN201795229U (en) * | 2010-08-19 | 2011-04-13 | 四川德源石油天然气工程有限公司 | Corrosion resistant structure of external corrosion resistant layer for pipeline crossing |
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Patent Citations (6)
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| JPH01108036A (en) * | 1987-10-22 | 1989-04-25 | Sumitomo Metal Ind Ltd | Heavy corrosion-resistive steel pipe having stopping property of fracture propagation |
| JP2002273825A (en) * | 2001-03-21 | 2002-09-25 | Nippon Steel Corp | Heavily anti-corrosive coated steel material showing excellent impact resistance against rubble mound stone |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305334A (en) * | 2011-05-20 | 2012-01-04 | 中国石油集团工程设计有限责任公司 | Method for protecting anti-corrosion layer of pipeline during horizontal directional drilling crossing in oil and gas engineering |
| CN102305334B (en) * | 2011-05-20 | 2013-03-20 | 中国石油集团工程设计有限责任公司 | Method for protecting anti-corrosion layer of pipeline during horizontal directional drilling crossing in oil and gas engineering |
| CN104565677A (en) * | 2013-10-24 | 2015-04-29 | 中国石油化工股份有限公司 | Anticorrosion layer protective structure of pipeline of directional drilling crossing section and method for manufacturing anticorrosion layer protective structure |
| CN104565677B (en) * | 2013-10-24 | 2019-03-19 | 中国石油化工股份有限公司 | A kind of erosion resistant coating protection structure of directional drilling crossing segment pipe and preparation method thereof |
| CN103672209A (en) * | 2013-12-05 | 2014-03-26 | 江苏金波新材料科技有限公司 | Novel anti-corrosion and pressure-resistant composite pipe |
| CN107764155A (en) * | 2016-08-15 | 2018-03-06 | 恩坦华汽车系统（上海）有限公司 | The verification method of skylight viscose glue |
| CN107059618A (en) * | 2017-02-28 | 2017-08-18 | 南京工业大学 | A kind of fiber reinforcement light or water cure prepreg are wrapped band |
| CN106947369A (en) * | 2017-04-01 | 2017-07-14 | 石狮华宝新材料工程有限公司 | Composite heavy corrosion protection material and construction technology for burning power plant |
| CN107081921A (en) * | 2017-05-27 | 2017-08-22 | 贵州石鑫玄武岩科技有限公司 | A kind of basalt fibre multiple tube and preparation method thereof |
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Application publication date: 20110112 |