CN113028195A - Technological method for repairing crack defects of pipelines - Google Patents
Technological method for repairing crack defects of pipelines Download PDFInfo
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- CN113028195A CN113028195A CN202110305605.1A CN202110305605A CN113028195A CN 113028195 A CN113028195 A CN 113028195A CN 202110305605 A CN202110305605 A CN 202110305605A CN 113028195 A CN113028195 A CN 113028195A
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- crack
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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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Pipe Accessories (AREA)
Abstract
The invention provides a process method for repairing crack defects of pipelines, which comprises the following steps: s1, drilling crack stopping holes at two ends of the crack or the crack; s2, plugging the crack arrest hole; s3, winding the material with permeability on the outer sides of the crack or the fissure and the crack-stopping hole; s4, coating a repairing agent on the outer side and the periphery of the material in the step S3. According to the invention, the crack-stopping holes are drilled at the two ends of the crack or the crack and are sealed, so that the crack or the crack can be prevented from further cracking, and the permeable material is wound and tightly attached to the part to be repaired, so that the strength of the part to be repaired is improved, the repairing agent coated subsequently can permeate and infiltrate into the material, the tensile strength of the material is improved, the strength of the repaired position is further improved, and the service life of the pipeline is prolonged; and the method does not destroy the original metallographic structure of the metal part.
Description
Technical Field
The invention relates to the technical field of pipeline repair, in particular to a process method for repairing crack defects of pipelines.
Background
The pipeline causes the pipeline body, the welding seam to appear crackle and reveal because of factors such as vibrations, fatigue in the use, traditional repair technique mainly uses methods such as electric welding, gas welding, the energy that electricity, gas welding technology generate heat is great, often can make mechanical parts produce the heat altered shape of different degree in the implementation process, still probably make the original metallographic structure of metal parts change, and moreover the environment of rich water is unfavorable for the welding construction, this life after will directly influencing the part restoration, spare part quality and performance after the restoration also hardly reach the standard of new preparation spare part. Based on the method, a simple and quick process method which does not influence the original properties of the parts is designed.
The invention patent with application publication date of 2016.07.27 and publication number of CN105797939A discloses a pipeline repairing method based on iron resin spraying, which comprises the construction steps of pressure cleaning, surface preparation, iron resin spraying, drying, acceptance inspection and the like. Although the iron resin has the functions of seepage prevention and corrosion prevention, the iron resin is only sprayed to achieve the aim of repairing, after long-term use, cracks in the pipeline cannot be prevented from continuously cracking by the iron resin on the surface, the pipeline is difficult to reach the standard of newly manufactured parts after being repaired, and the service life is short.
Disclosure of Invention
Aiming at the technical problems, the invention provides a process method for repairing the crack defects of the pipeline, which is used for solving the problem of short service life of the repaired pipeline crack in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a process method for repairing crack defects of pipelines comprises the following steps:
s1, drilling crack stopping holes at two ends of the crack or the crack;
s2, plugging the crack arrest hole;
s3, winding the material with permeability on the outer sides of the crack or the fissure and the crack-stopping hole;
s4, coating a repairing agent on the outer side and the periphery of the material in the step S3.
The crack stop holes are drilled at the two ends of the crack or the crack and are sealed, so that the crack or the crack can be prevented from further cracking, the permeable material is wound and attached to the part to be repaired, the strength of the part to be repaired is improved, the repairing agent coated subsequently can permeate and infiltrate into the material, the tensile strength of the material is improved, and the strength of the repaired part is further improved.
Further, in order to determine the position to be repaired, the position and length of the crack or fissure in the step S1 are determined by inspection.
Further, in order to improve the accuracy of determining the position to be repaired, the inspection is a magnetic particle inspection or a dye check inspection.
Further, in order to improve the strength at the crack stopper, in step S2, the crack stopper is sealed by a metal wire and polished to be flat.
Further, in order to facilitate the close winding of the material and to improve the effect of the repairing agent, the step S3 includes the steps of:
s3.1, treating the surfaces and the peripheries of the cracks or the cracks and the crack arrest holes;
s3.2, winding the position processed in the step S3.1 by using a material with permeability.
Further, in order to make the wound material fit the position to be repaired on the pipeline more closely, the step S3.1 includes the following steps:
s3.1.1, cleaning cracks or fissures and flash and/or burr on the surface of the crack arrest hole;
s3.1.2, cleaning cracks or fissures and oil stains and/or impurities and/or dust on the surfaces of the crack arrest holes by cleaning agents;
s3.1.3, the cleaned position in step S3.1.2 is treated by surface roughening.
Further, in order to facilitate the roughening treatment, the step S3.1.3 is to perform a surface roughening treatment by using sandpaper.
Further, in order to select a material having better permeability, the material having permeability is non-woven fabric or cotton cloth.
Further, in order to accelerate the curing of the repairing agent and improve the strength of the position to be repaired, the method also comprises the following steps:
and S5, accelerating the curing of the repairing agent by heating.
Further, in order to further improve the strength of the location to be repaired, the steps S3.2, S4 and S5 are sequentially repeated.
The invention has the beneficial effects that: according to the invention, the crack-stopping holes are drilled at the two ends of the crack or the crack and are sealed, so that the crack or the crack can be prevented from further cracking, and the permeable material is wound and tightly attached to the part to be repaired, so that the strength of the part to be repaired is improved, the repairing agent coated subsequently can permeate and infiltrate into the material, the tensile strength of the material is improved, the strength of the repaired position is further improved, and the service life of the pipeline is prolonged; and the method does not damage the original metallographic structure of the metal parts and does not influence the normal use of the pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The process method for repairing the crack defect of the pipeline, which is disclosed by the embodiment 1 of the invention, comprises the following steps of:
s1, drilling crack stopping holes at two ends of the crack or the crack to prevent the crack or the crack from continuing to expand;
s2, plugging the crack-stopping hole, adopting a metal wire to plug the crack-stopping hole, and lightly tapping the crack-stopping hole by using a hammer until the filler is filled
Plugging the crack-stopping hole, and polishing and flattening by using abrasive paper to prevent liquid from being sprayed; preferably, the metal wire can be an iron wire or a copper wire, and in this embodiment, an iron wire is used;
s3, winding the material with permeability on the outer side of the crack or the fissure and the crack-stopping hole
The permeable material is a sheet-shaped flexible material, which is convenient for winding on the position to be repaired of the crack or fissure on the pipeline, and usually adopts cloth, preferably, the permeable material can be non-woven fabric or cotton cloth; in the embodiment, the non-woven fabric is wound on the outer sides and the peripheries of the cracks or the cracks and the crack-stopping holes for 1-2 layers and then is tightly wound;
s4, applying a repairing agent on the outer side and the periphery of the material in the step S3; specifically, the repairing agent is smeared on a position to be repaired, on which the non-woven fabric is wound, for one circle, and the wound non-woven fabric is completely immersed. In addition, before or during the steps S1-S3, a proper repairing agent is selected according to the material of the part to be repaired, the working condition of the site and the like, wherein the repairing agent can be purchased and existing, or can be prepared from a plurality of components; if a plurality of components are prepared, the components are uniformly mixed according to a certain required proportion in the preparation process, the components are stirred along one direction during stirring, the color of the adhesive is uniform after the components are uniformly stirred, the force tends to be uniform during stirring, and the effect is achieved until no obvious group clamping feeling exists; if the repairing agent is purchased, the repairing agent can be LOCTITE3478 or WEICON WR or 1st line 2211F, and LOCTITE3478 is used as the repairing agent in the embodiment. The crack-stopping holes are drilled at the two ends of the crack or the crack and are sealed, so that the crack or the crack can be prevented from further cracking, the material with permeability is wound and tightly attached to the part to be repaired, the strength of the part to be repaired is improved, the repairing agent coated subsequently can permeate and infiltrate into the material, the tensile strength of the material is improved, and the strength of the repaired part is further improved. In addition, the method does not damage the original metallographic structure of the metal parts and does not influence the normal use of the pipeline.
Further, before the step S1, the situation around the position to be repaired is checked to determine the repair position, and then the specific position and the specific length of the crack or the crack are determined, which are determined by means of inspection.
Further, the inspection mode can be magnetic powder inspection and dye penetrant inspection. The accuracy of the specific location and specific length of the crack or fissure examined in both ways is extremely high.
Example 2: the step S3 includes the following steps:
s3.1, treating the surfaces and the peripheries of the cracks or the cracks and the crack arrest holes;
s3.2, winding the position processed in the step S3.1 by using a material with permeability. After the surface and the periphery of the crack or the fissure and the crack-stopping hole are treated, the flexible sheet-shaped material can be wound more tightly and more closely at the position to be repaired, and the repairing agent coated subsequently can be more uniformly covered on the position to be repaired after the repairing agent is soaked in the material.
Example 3: step S3.1 comprises the steps of:
s3.1.1, cleaning cracks or fissures and flash and/or burr on the surface of the crack arrest hole;
s3.1.2, cleaning the cracks or fissures and oil stains and/or impurities and/or dust on the surfaces of the crack-stopping holes by using a cleaning agent, further enabling the non-woven fabric to be wound more tightly and more fittingly at the positions to be repaired, and further enabling the repairing agent coated subsequently to cover the positions to be repaired more uniformly after being soaked in the cloth;
s3.1.3, the cleaned position S3.1.2 is treated by surface roughening, specifically, the surface of the position to be repaired is sanded with sand paper.
Example 4: in order to accelerate the curing of the repairing agent and improve the strength of the position to be repaired, the method also comprises the following steps:
and S5, accelerating the curing of the repairing agent by heating. In other embodiments, the composition may be allowed to cure naturally by standing at room temperature, and may be allowed to cure completely by standing at room temperature for 24 hours.
Example 5: in order to further improve the strength of the position to be repaired, the steps S3.2, S4 and S5 are repeated in sequence, specifically, after a first layer of repairing agent is coated on the first layer of permeable material and cured, the permeable material can be wound on the outer side of the first layer of permeable material, then the repairing agent is coated again, and then the repairing agent is cured, and the steps can be repeated in sequence for multiple times, multiple layers of flexible materials are wound, multiple layers of repairing agents are coated, and the service life of the position to be repaired is further prolonged.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A process method for repairing crack defects of pipelines is characterized by comprising the following steps:
s1, drilling crack stopping holes at two ends of the crack or the crack;
s2, plugging the crack arrest hole;
s3, winding the material with permeability on the outer sides of the crack or the fissure and the crack-stopping hole;
s4, coating a repairing agent on the outer side and the periphery of the material in the step S3.
2. The process for pipeline crack defect repair of claim 1, wherein the location and length of the crack or fissure in step S1 is determined by inspection.
3. A process for pipeline flaw defect repair according to claim 2, wherein the inspection is a magnetic particle inspection or dye check inspection.
4. The process method for repairing the pipeline crack defect according to any one of claims 1 to 3, wherein the step S2 is to seal the crack-stopping hole by a metal wire and polish the hole flat.
5. The process for pipeline crack defect repair as claimed in claim 4, wherein said step S3 includes the steps of:
s3.1, treating the surfaces and the peripheries of the cracks or the cracks and the crack arrest holes;
s3.2, winding the position processed in the step S31 by using a material with permeability.
6. Process for pipeline crack defect repair according to claim 5, wherein said step S3.1 comprises the following steps:
s3.1.1, cleaning cracks or fissures and flash and/or burr on the surface of the crack arrest hole;
s3.1.2, cleaning cracks or fissures and oil stains and/or impurities and/or dust on the surfaces of the crack arrest holes by cleaning agents;
s3.1.3, the cleaned position in step S3.1.2 is treated by surface roughening.
7. The process for pipeline crack defect repair of claim 6, wherein said step S3.1.3 is a surface roughening treatment by sandpaper.
8. The process method for repairing the crack defect of the pipeline according to any one of claims 5 to 7, wherein the material with permeability is non-woven fabric or cotton cloth.
9. The process for pipeline crack defect repair according to claim 8, further comprising the steps of:
and S5, accelerating the curing of the repairing agent by heating.
10. The process for pipeline crack defect repair of claim 9, wherein the steps S3.2, S4 and S5 are repeated sequentially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110305605.1A CN113028195A (en) | 2021-03-23 | 2021-03-23 | Technological method for repairing crack defects of pipelines |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110305605.1A CN113028195A (en) | 2021-03-23 | 2021-03-23 | Technological method for repairing crack defects of pipelines |
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| CN113028195A true CN113028195A (en) | 2021-06-25 |
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| CN202110305605.1A Pending CN113028195A (en) | 2021-03-23 | 2021-03-23 | Technological method for repairing crack defects of pipelines |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664459A (en) * | 2021-08-17 | 2021-11-19 | 大新华飞机维修服务有限公司 | Repairing process for sealing strip of sealing cabin door of passenger plane |
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| US20020106464A1 (en) * | 2001-02-08 | 2002-08-08 | Bazinet Steve R. | Method of securing a curing composite substrate wrap to a structure |
| CN101206000A (en) * | 2007-01-18 | 2008-06-25 | 北京安科管道工程科技有限公司 | Method for renovation and reinforcement of pipe using basalt fibre complex material |
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2021
- 2021-03-23 CN CN202110305605.1A patent/CN113028195A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4219051A (en) * | 1975-08-04 | 1980-08-26 | N.V. Raychem S.A. | Heat recoverable article |
| US20020106464A1 (en) * | 2001-02-08 | 2002-08-08 | Bazinet Steve R. | Method of securing a curing composite substrate wrap to a structure |
| CN101206000A (en) * | 2007-01-18 | 2008-06-25 | 北京安科管道工程科技有限公司 | Method for renovation and reinforcement of pipe using basalt fibre complex material |
| CN101307856A (en) * | 2007-05-15 | 2008-11-19 | 上海华夏化工材料有限公司 | Steel pipeline corrosion proof reinforcing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113664459A (en) * | 2021-08-17 | 2021-11-19 | 大新华飞机维修服务有限公司 | Repairing process for sealing strip of sealing cabin door of passenger plane |
| CN113664459B (en) * | 2021-08-17 | 2024-05-07 | 大新华飞机维修服务有限公司 | Repairing process for sealing strip of passenger plane sealing cabin door |
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Application publication date: 20210625 |