CN104565677A - Anticorrosion layer protective structure of pipeline of directional drilling crossing section and method for manufacturing anticorrosion layer protective structure - Google Patents
Anticorrosion layer protective structure of pipeline of directional drilling crossing section and method for manufacturing anticorrosion layer protective structure Download PDFInfo
- Publication number
- CN104565677A CN104565677A CN201310503702.7A CN201310503702A CN104565677A CN 104565677 A CN104565677 A CN 104565677A CN 201310503702 A CN201310503702 A CN 201310503702A CN 104565677 A CN104565677 A CN 104565677A
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- China
- Prior art keywords
- anticorrosive coat
- pipeline
- anticorrosion layer
- protective structure
- operator guards
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Classifications
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- 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
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/32—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core on a rotating mould, former or core
Abstract
The invention provides an anticorrosion layer protective structure of a pipeline of a directional drilling crossing section and a method for manufacturing the anticorrosion layer protective structure. The anticorrosion layer protective structure comprises a steel pipe and an anticorrosion layer. The anticorrosion layer covers the outer surface of the steel pipe, and a composite protective layer further covers the outer surface of the anticorrosion layer. The method for manufacturing the anticorrosion layer protective structure includes steps of (1), pretreating the anticorrosion layer of the pipeline; (2), distributing resin adhesive; (3), discharging yarns and dipping the yarns in the adhesive; (4), winding and forming the yarns; (5), trimming the yarns. The anticorrosion layer protective structure and the method have the advantages that the anticorrosion layer protective structure of the pipeline is excellent in abrasion-resistant and scratch-resistant performance, high-temperature resistance and corrosion resistance; the method for manufacturing the anticorrosion layer protective structure is high in mechanization and automation degree, the defect of easiness in generating bubbles due to the fact that glass fiber cloth is adhered on the surfaces of existing anticorrosion layers layer by layer and the shortcoming of degradation of the strength of products due to stress concentration at interlacing points of cloth marks and the tail ends of short glass fibers can be overcome, and the shear strength of the protective layer can be greatly improved.
Description
technical field
The present invention relates to a kind of pipeline external anti-corrosion layer operator guards and preparation method thereof, especially relate in the construction of directional drilling crossing section and return hauling pipe pipeline external anticorrosive coating operator guards and preparation method thereof.
Background technology
Current people are in the process of installing various buried pipeline (as natural gas line, petroleum pipeline), often run into obstacles such as building, highway, railway, river, lake and not easily all kinds of or be not suitable for the region that shallow embedding passes through, and directional drilling crossing technology can address this problem preferably.Under normal circumstances, buried pipeline all adopts two-layer or three strata alkene composite anti-corrosive structures, and the anticorrosive coat adhesion strength of these anticorrosion structures is poor, in buried pipeline crossing construction process, be easily subject to friction, the extruding of solid rock in stratum, cause the anticorrosive coat of buried pipeline outside damaged.Pipeline due to directional drilling crossing section is buried under underground or obstacle, cannot implement excavation and repair, make buried pipeline there is potential security risk after thus breakage appears in pipeline anticorrosion coating.
Directional drilling crossing pipeline mainly installs protective layer additional outside pipeline anticorrosion coating both at home and abroad at present; the protective layer of present application mainly contains double-deck fusion bonded epoxy coating, polyurethane protective finish, ultraviolet photocureable material protective finish, epoxy polymer concrete coating and plexiglas fibrous composite protective layer etc.; it mainly exists, and wearability resistance to marring is poor, operating procedure is complicated, is difficult to the situations such as the damage of avoiding back dragging pipeline anticorrosion coating completely.Patents proposes to adopt added metal operator guards, but its whole construction cost of installing is too high, and part is installed and protected deficiency again.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art part; the anticorrosive coat operator guards of the simple directional drilling crossing segment pipe of a kind of structure is provided; effectively can prevent directional drilling pipeline through section from returning and be pulled through anticorrosive coat wearing and tearing and scuffing in journey, thus make pipeline anticorrosion coating obtain complete protection.
The invention provides a kind of anticorrosive coat operator guards of directional drilling crossing segment pipe; comprise steel pipe; cover the anticorrosive coat of outer surface of steel tube, anticorrosive coat outer surface is also coated with composite protection layer, and described composite protection layer is made up of fibrous material and the resin viscose glue adding auxiliary agent and filler.
The anticorrosive coat operator guards of directional drilling crossing segment pipe of the present invention, described anticorrosive coat is polyolefin combined anti-corrosion layer.
The anticorrosive coat operator guards of directional drilling crossing segment pipe of the present invention; described fibrous material can be polyester fiber, gather one or more in benzamide fiber, polyimide fiber, Fypro and PMMI fiber; the form of described fibrous material can be silvalin or fiber laid band, and optimum fiber is without latitude band.
The anticorrosive coat operator guards of directional drilling crossing segment pipe of the present invention, the matrix of described resin viscose glue can be one or more in epoxy resin, silicones, phenolic resins, furane resins, unsaturated-resin, and preferred epoxy and silicones combine.
The anticorrosive coat operator guards of directional drilling crossing segment pipe of the present invention, described auxiliary agent can be boracic polysiloxanes.
The anticorrosive coat operator guards of directional drilling crossing segment pipe of the present invention, described filler can be one or more in graphite powder, carborundum powder, quartz sand, micron order glass microballoon, polysulfones, PEI, preferred graphite powder and/or polysulfones.
The preparation method of the anticorrosive coat operator guards of directional drilling crossing segment pipe of the present invention, comprises the steps:
(1) pipeline anticorrosion coating pretreatment: carry out visual examination and process to pipeline anticorrosion coating, guarantees that anticorrosive coat is smooth, dried and clean, is then fixed in and is wound around on utensil;
(2) resin viscose glue is configured: in resin matrix, proportionally add solvent, curing agent, auxiliary agent and filler preparation resin viscose glue with technological requirement;
(3) yarn gumming is arranged: be arranged in by fibrous material on creel, poured in glue groove by resin viscose glue, make fibrous material by glue groove, the fibrous material of dipped glue is carried out partially desiccated;
(4) harass and disturb shaping: by the fiber after impregnation by tension controller, on pipeline, carry out the winding of preset lines type according to design parameter, when reaching the fibrous composite protective layer of specific thickness, stopping being wound around, unloading pipeline, pipeline is cured;
(5) repair: the burr of process fiber composite protective layer and the viscose glue of sagging, make surfacing smooth.
In preparation method of the present invention, described fibrous material first carry out before use drying process, baking temperature 40 ~ 90 DEG C, drying time 1 ~ 30h.
In preparation method of the present invention, each configuration amount of resin viscose glue should calculate configuration by parameters such as the length of the size of caliber, pipeline section and cladding thicknesses.
In the inventive method, line style harassed and disturbed by described fiber can be that hoop is harassed and disturbed, longitudinal direction is harassed and disturbed, spiral is harassed and disturbed or any combination of three, and preferred spiral is harassed and disturbed.
The present invention, compared to prior art, has the following advantages:
The anticorrosive coat operator guards of directional drilling crossing segment pipe of the present invention, anticorrosive coat adopts fibrous composite protective layer outward, in resin viscose glue, add filler simultaneously, first can form the secondary protective layer that one deck is made up of wear resistant filler and resin on anticorrosive coat surface when being wound around, due to adding of wear resistant filler, resistance to wearing and adhesion strength of time protective layer can be increased greatly, like this can at utmost protective conduit anticorrosive coat, even if the protective layer that outermost layer is made up of fibrous composite is destroyed, secondary protective layer still can provide protection to anticorrosive coat, under the double action of protective layer with time protective layer, effectively prevent pipeline from returning the damage of dragging to pipeline anticorrosion coating in construction and the sharp-pointed buried construction in Rock Region at Directional Drilling, effectively extend the service life of pipeline anticorrosion coating, further increase conduit running security, reliability.
The present invention selects fibrous composite as the protective material of pipeline anticorrosion coating; its excellent in mechanical performance; there is extraordinary wear-resistant, scratch resistant performance; also there is excellent high temperature resistant and corrosion resistance; the erosion of many chemistry or Korrosionsmedium can be resisted, further enhancing the effect of surface anticorrosion layer isolation corrosive medium.
The present invention select silvalin or without latitude band as raw material, avoid fiber cloth and concentrate as the intertwined point of woven design during raw material and the stress of short glass fiber end the problem causing product strength to decline.The present invention utilizes machine to be wound around; mechanization and automated production degree higher; winding tension makes unnecessary resin viscose glue be extruded by bubble; and fill up space; easily produce bubble at anticorrosive coat surface layer-by-layer sticking glass fabric and then affect the defect of quality of protection before effectively prevent, and significantly improve protective layer shear strength.Therefore constant product quality and have higher precision; Overall structure is comparatively simple, and productivity ratio is high, easy to make, is easy to be extended and applied.
Detailed description of the invention
Below by specific embodiment, detailed description is given to anticorrosive coat operator guards of directional drilling crossing segment pipe of the present invention and preparation method thereof.
The guard method of a kind of directional drilling crossing segment pipe external anti-corrosion layer, comprises the steps:
(1) fiber drying and processing: fiber sand group is placed in 1 ~ 30 hour drying and processing in 40 ~ 90 degree of baking ovens.
(2) pipeline anticorrosion coating surface treatment: the Pipe installing of prefabricated external anti-corrosion layer is fixed on facility in wrapping machine, then visual examination and process are carried out to pipeline external anti-corrosion layer, eliminate protrusion of surface, burr, corner angle etc., with ethanol or ethyl acetate cleaning anticorrosive coat surface, guarantee that anticorrosive coat is smooth, dried and clean.
(3) glue preparation: select the weighing instrument of suitable range to carry out the weighing of each component by technique and ratio requirement, then in resin matrix, solvent, curing agent, auxiliary agent is added, add filler configuration resin viscose glue, for the winding of fiber provides maceration extract after artificial or agitator fully stir simultaneously; Each resin viscose glue configuration amount should calculate configuration, in order to avoid cause waste by parameters such as the length of the size of caliber, pipeline section and cladding thicknesses.
(4) be wound around setting parameter: design parameter is inputted wrapping machine, carries out Alignment Design and control by special-purpose software, carry out predetermined line style winding, ensure not occur yarn sheet gap slip phenomenon.
(5) arrange yarn gumming: be arranged in by fiber yarn on creel, poured into by glue in glue groove, adopt rubber roll contact method gum dipping process impregnation, make fiber successively by steeping vat, Extruded roller and spreading knife, then the fiber of impregnation is divided into some groups, by boundling after yarn divider, introduces Guide head.
(6) glue yarn is dried: dried by dryer by the silvalin bundle of dipped glue, to ensure to remove the solvent in resin system, so that non-foaming in Wrapping formed process, ensure quality of item, make the preliminary gel of resin simultaneously.
(7) be wound around: by glue yarn by tension controller, utilize wrapping machine to carry out setting the winding of line style, when reaching the fibrous protective layer of specific thickness, shutting down and unloading pipeline, putting into curing oven, according to technological requirement design temperature, hardening time, be heating and curing; Nature cooling is carried out after solidification terminates.
(9) repair: the burr of process fibrous composite protective layer and the viscose glue of sagging, make surfacing smooth.
The performance parameter of the anticorrosive coat operator guards of the directional drilling crossing segment pipe of having constructed according to the inventive method is in table 1.
The performance parameter of the anticorrosive coat operator guards of table 1 directional drilling crossing segment pipe
Claims (13)
1. the anticorrosive coat operator guards of a directional drilling crossing segment pipe; comprise steel pipe; cover the anticorrosive coat of outer surface of steel tube, it is characterized in that: described anticorrosive coat outer surface is also coated with composite protection layer, described composite protection layer is made up of fibrous material and the resin viscose glue adding auxiliary agent and filler.
2. according to anticorrosive coat operator guards according to claim 1, it is characterized in that: described anticorrosive coat is polyolefin combined anti-corrosion layer.
3. according to anticorrosive coat operator guards according to claim 1, it is characterized in that: described fibrous material is polyester fiber, gathers one or more in benzamide fiber, polyimide fiber, Fypro and PMMI fiber.
4. according to anticorrosive coat operator guards according to claim 1, it is characterized in that: the form of described fibrous material is silvalin or fiber laid band.
5. according to anticorrosive coat operator guards according to claim 1, it is characterized in that: the matrix of described resin viscose glue is one or more in epoxy resin, silicones, phenolic resins, furane resins, unsaturated-resin.
6. according to anticorrosive coat operator guards according to claim 1, it is characterized in that: the matrix of described resin viscose glue is epoxy resin and silicones.
7. according to anticorrosive coat operator guards according to claim 1, it is characterized in that: described auxiliary agent is boracic polysiloxanes.
8. according to anticorrosive coat operator guards according to claim 1, it is characterized in that: described filler is one or more in graphite powder, carborundum powder, quartz sand, micron order glass microballoon, polysulfones, PEI.
9. according to anticorrosive coat operator guards according to claim 1, it is characterized in that: described filler is graphite powder and/or polysulfones.
10. the preparation method of the anticorrosive coat operator guards of the directional drilling crossing segment pipe in claim 1 ~ 9 described in arbitrary claim, comprises the steps:
(1) pipeline anticorrosion coating pretreatment: carry out visual examination and process to pipeline anticorrosion coating, guarantees that anticorrosive coat is smooth, dried and clean, is then fixed in and is wound around on utensil;
(2) resin viscose glue is configured: in resin matrix, proportionally add solvent, curing agent, auxiliary agent and filler preparation resin viscose glue with technological requirement;
(3) yarn gumming is arranged: be arranged in by fibrous material on creel, poured in glue groove by resin viscose glue, make fibrous material by glue groove, the fibrous material of dipped glue is carried out partially desiccated;
(4) harass and disturb shaping: by the fibrous material of dipped glue by tension controller, on pipeline, carry out the winding of preset lines type according to design parameter, when reaching the fibrous composite protective layer of specific thickness, stopping being wound around, unloading pipeline, pipeline is cured;
(5) repair: the burr of process fiber composite protective layer and the viscose glue of sagging, make surfacing smooth.
11., according to preparation method according to claim 10, is characterized in that: described fibrous material first carry out before use drying process, baking temperature 40 ~ 90 DEG C, drying time 1 ~ 30h.
12., according to preparation method according to claim 10, is characterized in that: each configuration amount of resin viscose glue calculates configuration by the size of caliber, the length of pipeline section and cladding thickness parameter.
13., according to preparation method according to claim 10, is characterized in that: described fiber harasses and disturbs that line style is that hoop is harassed and disturbed, longitudinally harassed and disturbed, spiral harass and disturb in one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310503702.7A CN104565677B (en) | 2013-10-24 | 2013-10-24 | A kind of erosion resistant coating protection structure of directional drilling crossing segment pipe and preparation method thereof |
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| CN201310503702.7A CN104565677B (en) | 2013-10-24 | 2013-10-24 | A kind of erosion resistant coating protection structure of directional drilling crossing segment pipe and preparation method thereof |
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| CN104565677B CN104565677B (en) | 2019-03-19 |
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Cited By (3)
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| CN106122678A (en) * | 2016-06-23 | 2016-11-16 | 陕西宇阳石油科技工程有限公司 | Directional drilling crossing pipeline external coating structure and processing method thereof |
| CN108663408A (en) * | 2018-05-18 | 2018-10-16 | 中国石油天然气集团公司 | A kind of steel oil-gas pipeline Directional Drilling erosion resistant coating breakage rate determines method |
| CN110696394A (en) * | 2019-10-14 | 2020-01-17 | 中石化石油机械股份有限公司沙市钢管分公司 | Method for preparing glass fiber reinforced plastic protective layer on polyethylene anticorrosive layer of steel pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122678A (en) * | 2016-06-23 | 2016-11-16 | 陕西宇阳石油科技工程有限公司 | Directional drilling crossing pipeline external coating structure and processing method thereof |
| CN108663408A (en) * | 2018-05-18 | 2018-10-16 | 中国石油天然气集团公司 | A kind of steel oil-gas pipeline Directional Drilling erosion resistant coating breakage rate determines method |
| CN110696394A (en) * | 2019-10-14 | 2020-01-17 | 中石化石油机械股份有限公司沙市钢管分公司 | Method for preparing glass fiber reinforced plastic protective layer on polyethylene anticorrosive layer of steel pipe |
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