CN110030457B - Method for repairing and reinforcing fluid conveying pipeline without stopping production - Google Patents
Method for repairing and reinforcing fluid conveying pipeline without stopping production Download PDFInfo
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- CN110030457B CN110030457B CN201910345540.6A CN201910345540A CN110030457B CN 110030457 B CN110030457 B CN 110030457B CN 201910345540 A CN201910345540 A CN 201910345540A CN 110030457 B CN110030457 B CN 110030457B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
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Abstract
The invention discloses a method for repairing and reinforcing a fluid conveying pipeline without stopping production, which comprises the following steps: 1) detecting the position and the size of the defect of the pipeline; 2) performing metal pressurized plugging repair on the perforated part of the pipeline; 3) coating an impregnating compound on the to-be-repaired part of the pipeline once, adopting a high-temperature repairing compound, and fusing the cured high-temperature repairing compound and the steel pipe into a whole to form a repairing layer; 4) winding and lining the pipeline repairing part by adopting fiber or fabric soaked with high-temperature-resistant resin, and forming a reinforcing layer after curing; 5) winding and reinforcing the outside of the reinforcing layer by adopting high-strength fibers or fabrics thereof and combining body materials, and forming a reinforcing layer after curing; 6) and coating high-temperature-resistant protective paint on the outside of the reinforcing layer, and curing to form the protective layer. The invention has the advantages of safety, reliability, low repair cost, short repair period and excellent corrosion resistance of the composite repair layer, can ensure that the high-temperature pipeline is repaired and reinforced under the condition of no production stop, saves a large amount of engineering monitoring time and improves the working efficiency.
Description
Technical Field
The invention relates to a defect repairing technology of a fluid conveying pipeline, in particular to a method for repairing and reinforcing the fluid conveying pipeline without stopping production.
Background
Along with the rapid development of the industry in China, the fluid is conveyed more and more generally by using pipelines, the types of pipeline conveying media are increased, and the conveying temperature is increased, so that the traditional pipeline internal corrosion prevention construction technology can not meet the requirements of the current actual situation more and more, and the conditions of pipe wall thinning, perforation leakage and even pipe explosion caused by internal corrosion sometimes occur, so that the hidden danger is caused to the safety production.
The traditional electric welding and other fire repairing technologies are mostly adopted for repairing and repairing the steel pipelines with defects such as leakage, thinned pipe walls and the like in China, the operation is difficult in the flammable and explosive environment, the production stop operation is required for preventing the occurrence of fire and explosion, all flammable and explosive media in the pipelines need to be cleaned, and the operation can be carried out only after the flammable and explosive media are fully replaced by nitrogen. In addition, the problems of uniform force transmission and performance matching between the pipeline and the reinforcing steel during welding are easily caused, such as hydrogen embrittlement, cold embrittlement and the like, and the problems of pipe body deformation and the like are easily caused by local stress, so that the repairing quality is seriously influenced.
The hidden danger parts of the pipeline are repaired and reinforced by adopting a non-stop and non-fire repairing process, so that the condition can be avoided, the safe production of the pipeline is ensured to the maximum extent, and the risks of environmental pollution and the like caused by the condition are avoided to the maximum extent.
Disclosure of Invention
The invention aims to provide a method for repairing and reinforcing a fluid conveying pipeline without production stop, which is safe and reliable, low in repairing cost, short in repairing period and excellent in corrosion resistance of a composite repairing layer, can ensure that a high-temperature pipeline is repaired and reinforced without production stop, saves a large amount of engineering monitoring time and improves the working efficiency.
The purpose of the invention is realized as follows: a method for repairing and reinforcing a fluid conveying pipeline without stopping production comprises the following steps:
1) detecting the position and the size of the defect of the pipeline;
2) performing metal pressurized plugging repair on the perforated part of the pipeline to enable the repaired surface to be a continuous metal surface, and performing surface cleaning, rust removal and dirt removal on the corroded pipe wall thinning part of the pipeline to expose metal luster;
3) coating an impregnating compound on the to-be-repaired part of the pipeline once, repairing and coating the part of the pipeline which loses strength due to corrosion flatly by adopting a high-temperature repairing compound, and fusing the cured part and the steel pipe into a whole to form a repairing layer;
4) winding and lining the pipeline repairing part by adopting fiber or fabric soaked with high-temperature-resistant resin, and curing to form a reinforcing layer with the thickness of 8-12 mm;
5) high-strength fibers or fabrics thereof are combined with body materials to be wound and reinforced outside the reinforcing layer, and a reinforcing layer is formed after solidification, wherein the thickness of the reinforcing layer is 0.6-1 mm;
6) and coating high-temperature-resistant protective paint on the outside of the reinforcing layer, and curing to form the protective layer.
The strength of the pipeline repairing layer, the reinforcing layer and the reinforcing layer is more than 1.6 times of that of the repaired pipeline.
The surface cleaning adopts a sand blasting rust removal or an explosion-proof rust removal machine to remove rust, the surface cleanliness of the corroded part after the surface cleaning reaches grade Sa3, and the surface roughness Ry40-130 mu m.
The high-temperature repairing agent is a super metal repairing agent which is adopted when the operating temperature of the pipeline is below 150 ℃; adopting a urushiol epoxy resin metal repairing agent at the pipeline operation temperature of 150-180 ℃; adopting a urushiol metal repairing agent at the operation temperature of 180-200 ℃ in the pipeline; when the operating temperature of the pipeline is more than 200 ℃, the organosilicon metal repairing agent is adopted.
The fiber or fabric soaked with the high temperature resistant resin is at a temperature below 140 ℃, and adopts polyamide fiber or glass fiber or fabric thereof; the running temperature of the pipeline is above 150 ℃, and glass fiber or fabrics thereof are adopted; the soaked high-temperature resistant resin is epoxy resin with the pipeline running temperature below 100 ℃; the operation temperature of the pipeline is 100-120 ℃, and phenolic resin or novolac epoxy resin is adopted; the operation temperature of the pipeline is 120-150 ℃, and epoxy vinyl ester resin is adopted; the operation temperature of the pipeline is 150-180 ℃, and urushiol epoxy resin is adopted; the operation temperature of the pipeline is 180-200 ℃, and urushiol titanium is adopted; the running temperature of the pipeline is more than 200 ℃, and organic silicon resin is adopted.
The high-strength fiber or the fabric thereof is aramid fiber or carbon fiber or the fabric thereof, which is adopted when the running temperature of the pipeline is below 180 ℃; the running temperature of the pipeline is above 180 ℃, and carbon fiber or fabric thereof or diamond winding belts are adopted; the high-strength fiber or the fabric thereof is made of epoxy resin, wherein the running temperature of the pipeline is below 100 ℃; the operation temperature of the pipeline is between 100 and 120 ℃, and phenolic resin or novolac epoxy resin is adopted; the operation temperature of the pipeline is 120-150 ℃, and epoxy vinyl ester resin is adopted; the operation temperature of the pipeline is 150-180 ℃, and urushiol epoxy resin is adopted; the operation temperature of the pipeline is 180-200 ℃, and urushiol titanium resin is adopted; the running temperature of the pipeline is more than 200 ℃, and organic silicon resin is adopted.
The high temperature resistant protective coating adopts chlorinated rubber anticorrosive coating or chlorinated ether anticorrosive coating or high chlorinated polyethylene anticorrosive coating when the pipeline operating temperature is below 80 ℃; the running temperature of the pipeline is 80-120 ℃, and polyurethane anticorrosive paint is adopted; the operating temperature of the pipeline is 120-150 ℃, and acrylic acid anticorrosive paint is adopted; the operating temperature of the pipeline is 150-200 ℃, and fluorocarbon anticorrosive paint is adopted; the running temperature of the pipeline is more than 200 ℃, and the organosilicon anti-corrosive paint is adopted.
And (3) coating the to-be-repaired part of the pipeline with an impregnating compound so as to increase the bonding strength of the repairing compound and the glass fiber reinforced plastics to the steel pipe. Adopting 120 impregnating compound when the running temperature of the pipeline is below 150 ℃; adopting a urushiol epoxy impregnating compound at the pipeline operating temperature of 150-180 ℃; adopting a urushiol impregnating compound at the running temperature of the pipeline of 180-200 ℃; and adopting an organic silicon impregnating agent when the running temperature of the pipeline is more than 200 ℃.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts the all-metal leakage blocking technology to perform metal leakage blocking and repairing on the perforated part under pressure, so that the repaired part forms a continuous metal surface to play a role of repairing for a long time, and the composite repairing layer has excellent anti-corrosion performance and can achieve the use effect of repairing for a longer time than fire; the invention repairs without stopping production, save a large amount of losses of stopping production for the owner; the method has the advantages that the method is free from fire repairing and potential safety hazards, and the possibility of fire and explosion caused by an electric welding repairing process is avoided; the repair period is short, and a large amount of project monitoring time is saved for an owner; the repair cost is low, the repair quality is reliable, and the strength of the composite repair layer is more than 1.6 times of that of the steel pipe which is cut off and replaced by fire.
The invention has the advantages of safety, reliability, low repair cost, short repair period and excellent corrosion resistance of the composite repair layer, ensures that the high-temperature pipeline is repaired and reinforced under the condition of no production stop, saves a large amount of engineering monitoring time and improves the working efficiency.
Drawings
The present invention will be further described with reference to the accompanying drawings, and fig. 1 is a schematic cross-sectional view of the present invention.
Detailed Description
The technical solution of the present invention is further illustrated by the following embodiments
Example 1
Referring to fig. 1, a method for repairing and reinforcing a fluid conveying pipeline without stopping production includes the following steps:
1) detecting the defect position and size of the pipeline 1;
2) performing metal pressurized plugging and repairing on the perforated part of the pipeline by adopting an all-metal plugging technology to enable the repaired surface to be a continuous metal surface, cleaning the surface of the part to be repaired of the pipeline 1, removing rust by adopting a sand blasting rust removal or explosion-proof rust removal machine to remove oxide skin, loose rust, old coating and dirt, wherein the surface cleanliness after surface cleaning reaches grade Sa3, and the surface roughness reaches Ry40-130 mu m;
3) coating 120 impregnating compound on the to-be-repaired part of the pipeline 1, adopting super metal repairing compound to repair and level the perforation of the pipeline 1 and the part which is not strengthened due to corrosion, and fusing the repaired and leveled part with the steel pipe into a whole after natural curing to form a repairing layer 2, playing a role in repairing metal defects and recovering metal strength, wherein the strength of the repairing layer 2, the reinforcing layer 3 and the reinforcing layer 4 is more than 1.6 times of that of the pipeline 1;
4) winding and lining the to-be-repaired part of the pipeline 1 by adopting glass fiber or fabric thereof soaked with epoxy resin, and forming a reinforcing layer 3 after curing to enhance the strength of the repaired part of the pipeline, wherein the thickness of the reinforcing layer 3 is 8-12 mm; (ii) a
5) Aramid fiber or carbon fiber fabric is soaked in epoxy resin to be wound and reinforced outside the reinforcing layer 3, a reinforcing layer 4 is formed after curing, and the thickness of the reinforcing layer 4 is 0.6-1 mm;
6) and brushing chlorinated rubber anticorrosive paint or chlorinated ether anticorrosive paint or high chlorinated polyethylene anticorrosive paint on the outside of the reinforcing layer 4, and curing to form a protective layer 5, so that the composite repair reinforcing layer has a long-term reinforcing effect.
Example 2
Referring to fig. 1, a method for repairing and reinforcing a fluid conveying pipeline without stopping production includes the following steps:
1) detecting the defect position and size of the pipeline 1;
2) performing metal pressurized plugging and repairing on the perforated part of the pipeline by adopting an all-metal plugging technology to enable the repaired surface to be a continuous metal surface, cleaning the surface of the part to be repaired of the pipeline 1, removing rust by adopting a sand blasting rust removal or explosion-proof rust removal machine to remove oxide skin, loose rust, old coating and dirt, wherein the surface cleanliness after surface cleaning reaches grade Sa3, and the surface roughness reaches Ry40-130 mu m;
3) coating 120 impregnating compound on the to-be-repaired part of the pipeline 1, adopting super metal repairing compound to repair and level the perforation of the pipeline 1 and the part which is not strengthened due to corrosion, and fusing the repaired and leveled part with the steel pipe into a whole after natural curing to form a repairing layer 2, playing a role in repairing metal defects and recovering metal strength, wherein the strength of the repairing layer 2, the reinforcing layer 3 and the reinforcing layer 4 is more than 1.6 times of that of the pipeline 1;
4) winding and lining the to-be-repaired part of the pipeline 1 by adopting polyamide fiber or fabric thereof soaked with epoxy resin, and curing to form a reinforcing layer 3 so as to enhance the strength of the repaired part of the pipeline, wherein the thickness of the reinforcing layer 3 is 8-12 mm; (ii) a
5) Adopting carbon fiber and fabric thereof to soak epoxy resin to wind and reinforce the outside of the reinforcing layer 3, and forming a reinforcing layer 4 after curing, wherein the thickness of the reinforcing layer 4 is 0.6-1 mm;
6) and (3) coating a polyurethane anticorrosive paint outside the reinforcing layer 4, and curing to form a protective layer 5, so that the composite repairing reinforcing layer has a long-term reinforcing effect.
Example 3
Referring to fig. 1, a method for repairing and reinforcing a fluid conveying pipeline without stopping production includes the following steps:
1) detecting the defect position and size of the pipeline 1;
2) performing metal pressurized plugging repair on the perforated part of the pipeline by adopting an all-metal plugging technology to ensure that the repaired surface becomes a continuous metal surface, cleaning the surface of the part to be repaired of the pipeline 1, removing rust by adopting a sand blasting rust removing or explosion-proof rust removing machine to remove oxide skin, loose rust, old coating and dirt, ensuring that the surface cleanliness reaches grade Sa3 after surface cleaning, and ensuring that the surface roughness reaches Ry40-130 mu m;
3) the method comprises the following steps of (1) coating 120 impregnating compound on the to-be-repaired part of the pipeline 1, adopting a super metal repairing compound to repair and level the perforation of the pipeline 1 and the reinforcement losing part due to corrosion, naturally solidifying the perforation and the reinforcement losing part, and fusing the perforation and the reinforcement losing part with a steel pipe to form a repairing layer 2 so as to repair metal defects and restore metal strength, wherein the strength of the repairing layer 2, the reinforcing layer 3 and the reinforcing layer 4 is more than 1.6 times of that of the pipeline 1;
4) winding and lining the to-be-repaired part of the pipeline 1 by adopting glass fiber or fabric thereof soaked with phenolic resin or novolac epoxy resin, and curing to form a reinforcing layer 3 so as to reinforce the strength of the repaired part of the pipeline, wherein the thickness of the reinforcing layer 3 is 8-12 mm;
5) aramid fiber and fabrics thereof are soaked in phenolic resin or novolac epoxy resin to be wound and reinforced outside the reinforcing layer 3, a reinforcing layer 4 is formed after curing, and the thickness of the reinforcing layer 4 is 0.6-1 mm;
6) and (3) coating acrylic acid anticorrosive paint on the outside of the reinforcing layer 4, and curing to form a protective layer 5, so that the composite repair reinforcing layer has a long-term reinforcing effect.
Example 4
Referring to fig. 1, a method for repairing and reinforcing a fluid conveying pipeline without stopping production includes the following steps:
1) detecting the defect position and size of the pipeline 1;
2) performing metal pressurized plugging and repairing on the perforated part of the pipeline by adopting an all-metal plugging technology to enable the repaired surface to be a continuous metal surface, cleaning the surface of the part to be repaired of the pipeline 1, removing rust by adopting a sand blasting rust removal or explosion-proof rust removal machine to remove oxide skin, loose rust, old coating and dirt, wherein the surface cleanliness after surface cleaning reaches grade Sa3, and the surface roughness reaches Ry40-130 mu m;
3) the method comprises the following steps of (1) coating 120 impregnating compound on the to-be-repaired part of the pipeline 1, adopting a super metal repairing compound to repair and level the perforation of the pipeline 1 and the reinforcement losing part due to corrosion, naturally solidifying the perforation and the reinforcement losing part, and fusing the perforation and the reinforcement losing part with a steel pipe to form a repairing layer 2 so as to repair metal defects and restore metal strength, wherein the strength of the repairing layer 2, the reinforcing layer 3 and the reinforcing layer 4 is more than 1.6 times of that of the pipeline 1;
4) winding and lining the to-be-repaired part of the pipeline 1 by adopting glass fiber or fabric thereof soaked with epoxy vinyl ester resin, and curing to form a reinforcing layer 3 so as to enhance the strength of the repaired part of the pipeline, wherein the thickness of the reinforcing layer 3 is 8-12 mm; (ii) a
5) Adopting carbon fiber and fabric thereof to soak epoxy vinyl ester resin to wind and reinforce the outside of the reinforcing layer 3, and forming a reinforcing layer 4 after curing, wherein the thickness of the reinforcing layer 4 is 0.6-1 mm;
6) and (3) coating acrylic acid anticorrosive paint on the outside of the reinforcing layer 4, and curing to form a protective layer 5, so that the composite repair reinforcing layer has a long-term reinforcing effect.
Example 5
Referring to fig. 1, a method for repairing and reinforcing a fluid conveying pipeline without stopping production includes the following steps:
1) detecting the defect position and size of the pipeline 1;
2) performing metal pressurized plugging and repairing on the perforated part of the pipeline by adopting an all-metal plugging technology to enable the repaired surface to be a continuous metal surface, cleaning the surface of the part to be repaired of the pipeline 1, removing rust by adopting a sand blasting rust removal or explosion-proof rust removal machine to remove oxide skin, loose rust, old coating and dirt, wherein the surface cleanliness after surface cleaning reaches grade Sa3, and the surface roughness reaches Ry40-130 mu m;
3) painting a urushiol epoxy impregnating compound on a to-be-repaired part of the pipeline 1, adopting a urushiol epoxy metal repairing agent to repair and level the perforation of the pipeline 1 and the part which is not reinforced due to corrosion, naturally solidifying and then fusing with a steel pipe to form a repairing layer 2, playing a role in repairing metal defects and recovering metal strength, wherein the strength of the repairing layer 2, the reinforcing layer 3 and the reinforcing layer 4 is more than 1.6 times of that of the pipeline 1;
4) winding and lining the to-be-repaired part of the pipeline 1 by adopting glass fiber or fabric thereof soaked with urushiol epoxy resin, and curing to form a reinforcing layer 3 so as to reinforce the strength of the repaired part of the pipeline, wherein the thickness of the reinforcing layer 3 is 8-12 mm; (ii) a
5) Aramid fiber and fabric thereof are soaked in urushiol epoxy resin to be wound and reinforced outside the reinforcing layer 3, a reinforcing layer 4 is formed after curing, and the thickness of the reinforcing layer 4 is 0.6-1 mm;
6) and (3) coating fluorocarbon anticorrosive paint outside the reinforcing layer 4, and curing to form a protective layer 5, so that the composite repairing reinforcing layer has a long-term reinforcing effect.
Example 6
Referring to fig. 1, a method for repairing and reinforcing a fluid conveying pipeline without stopping production includes the following steps:
1) detecting the defect position and size of the pipeline 1;
2) performing metal pressurized plugging and repairing on the perforated part of the pipeline by adopting an all-metal plugging technology to enable the repaired surface to be a continuous metal surface, cleaning the surface of the part to be repaired of the pipeline 1, removing rust by adopting a sand blasting rust removal or explosion-proof rust removal machine to remove oxide skin, loose rust, old coating and dirt, wherein the surface cleanliness after surface cleaning reaches grade Sa3, and the surface roughness reaches Ry40-130 mu m;
3) painting a urushiol impregnating compound on a to-be-repaired part of the pipeline 1, adopting a urushiol metal repairing agent to repair and level the perforation of the pipeline 1 and the part which is not strengthened due to corrosion, naturally solidifying and then fusing with a steel pipe to form a repairing layer 2, playing a role in repairing metal defects and recovering metal strength, wherein the strength of the repairing layer 2, the reinforcing layer 3 and the reinforcing layer 4 is more than 1.6 times of that of the pipeline 1;
4) winding and lining the to-be-repaired part of the pipeline 1 by adopting glass fiber or fabric thereof soaked with urushiol titanium, and forming a reinforcing layer 3 after curing to enhance the strength of the repaired part of the pipeline, wherein the thickness of the reinforcing layer 3 is 8-12 mm; (ii) a
5) Carbon fiber and fabrics thereof are soaked in urushiol titanium to be wound and reinforced outside the reinforcing layer 3, a reinforcing layer 4 is formed after curing, and the thickness of the reinforcing layer 4 is 0.6-1 mm;
6) and (3) coating fluorocarbon anticorrosive paint on the outside of the reinforcing layer 4, and curing to form a protective layer 5, so that the composite repair reinforcing layer has a long-term reinforcing effect.
Example 7
Referring to fig. 1, a method for repairing and reinforcing a fluid conveying pipeline without stopping production includes the following steps:
1) detecting the defect position and size of the pipeline 1;
2) performing metal pressurized plugging repair on the perforated part of the pipeline by adopting an all-metal plugging technology to ensure that the repaired surface becomes a continuous metal surface, cleaning the surface of the part to be repaired of the pipeline 1, removing rust by adopting a sand blasting rust removing or explosion-proof rust removing machine to remove oxide skin, loose rust, old coating and dirt, ensuring that the surface cleanliness reaches grade Sa3 after surface cleaning, and ensuring that the surface roughness reaches Ry40-130 mu m;
3) the method comprises the following steps of (1) coating a machine silicon impregnating compound on a to-be-repaired part of a pipeline 1, flatly repairing and coating a perforation and a concave-convex reinforcement losing part due to corrosion of the pipeline 1 by using a machine silicon metal repairing compound, naturally curing the repairing compound, and then fusing the repairing compound and a steel pipe into a whole to form a repairing layer 2, so that the metal defect is repaired, and the metal strength is recovered, wherein the strength of the repairing layer 2, a reinforcing layer 3 and a reinforcing layer 4 is more than 1.6 times that of the pipeline 1;
4) winding and lining the to-be-repaired part of the pipeline 1 by adopting glass fiber or fabric thereof soaked with organic silicon resin, and curing to form a reinforcing layer 3 so as to enhance the strength of the repaired part of the pipeline, wherein the thickness of the reinforcing layer 3 is 8-12 mm; (ii) a
5) The outside of the reinforcing layer 3 is impregnated with organic silicon resin by adopting carbon fiber and fabric thereof or a diamond winding belt for winding reinforcement, and a reinforcing layer 4 is formed after curing, wherein the thickness of the reinforcing layer 4 is 0.6-1 mm;
6) and (3) coating an organic silicon anticorrosive paint on the outside of the reinforcing layer 4, and curing to form a protective layer 5, so that the composite repair reinforcing layer has a long-term reinforcing effect.
The invention adopts the all-metal leakage blocking technology to perform metal leakage blocking and repairing on the perforated part under pressure, so that the repaired part forms a continuous metal surface to play a role of repairing for a long time, and the composite repairing layer has excellent anti-corrosion performance and can achieve the use effect of repairing for a longer time than fire; the invention repairs without stopping production, save a large amount of losses of stopping production for the owner; the method has the advantages that the method is free from fire repairing and potential safety hazards, and the possibility of fire and explosion caused by an electric welding repairing process is avoided; the repair period is short, and a large amount of project monitoring time is saved for an owner; the repair cost is low, the repair quality is reliable, and the strength of the composite repair layer is more than 1.6 times of that of the steel pipe which is cut off and replaced by fire.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (3)
1. A method for repairing and reinforcing a fluid conveying pipeline without stopping production is characterized by comprising the following steps:
1) detecting the defect position and size of the pipeline (1);
2) performing metal pressurized plugging repair on the perforated part of the pipeline (1) to enable the repaired surface to be a continuous metal surface, and performing surface cleaning, rust removal and dirt removal on the corroded pipe wall thinning part of the pipeline (1) to expose metal luster;
3) coating the part to be repaired of the pipeline (1) with a wetting agent, repairing and leveling the part of the pipeline (1) which is not strengthened due to corrosion by adopting a high-temperature repairing agent, and fusing the cured part and the pipeline (1) into a whole to form a repairing layer (2);
4) winding and lining the repaired part of the pipeline (1) by adopting fiber or fabric soaked with high-temperature-resistant resin, and curing to form a reinforcing layer (3) with the thickness of 8-12 mm;
5) high-strength fibers or fabrics thereof are combined with body materials to be wound and reinforced outside the reinforcing layer (3), a reinforcing layer (4) is formed after curing, and the thickness of the reinforcing layer (4) is 0.6-1 mm;
6) coating high-temperature-resistant protective paint on the outside of the reinforcing layer (4), and curing to form a protective layer (5);
the high-temperature repairing agent is a super metal repairing agent which is adopted when the running temperature of the pipeline is below 150 ℃; adopting a urushiol epoxy resin metal repairing agent at the pipeline operation temperature of 150-180 ℃; adopting a urushiol metal repairing agent at the operation temperature of 180-200 ℃ in the pipeline; adopting an organic silicon metal repairing agent when the running temperature of the pipeline is more than 200 ℃;
the fiber or fabric soaked with the high temperature resistant resin is at a temperature below 140 ℃, and adopts polyamide fiber or glass fiber or fabric thereof; the running temperature of the pipeline is above 150 ℃, and glass fiber or fabrics thereof are adopted; the soaked high-temperature resistant resin is epoxy resin with the pipeline running temperature below 100 ℃; the operation temperature of the pipeline is between 100 and 120 ℃, and phenolic resin or novolac epoxy resin is adopted; the operation temperature of the pipeline is 120-150 ℃, and epoxy vinyl ester resin is adopted; the operation temperature of the pipeline is 150-180 ℃, and urushiol epoxy resin is adopted; the operation temperature of the pipeline is 180-200 ℃, and urushiol titanium is adopted; the running temperature of the pipeline is more than 200 ℃, and organic silicon resin is adopted;
the high-strength fiber or the fabric thereof adopts aramid fiber or carbon fiber or the fabric thereof at the running temperature of the pipeline of below 180 ℃; the running temperature of the pipeline is above 180 ℃, and carbon fiber or fabric thereof or diamond winding belts are adopted; the high-strength fiber or the fabric thereof is made of epoxy resin, wherein the running temperature of the pipeline is below 100 ℃; the operation temperature of the pipeline is 100-120 ℃, and phenolic resin or novolac epoxy resin is adopted; the operation temperature of the pipeline is 120-150 ℃, and epoxy vinyl ester resin is adopted; the operation temperature of the pipeline is 150-180 ℃, and urushiol epoxy resin is adopted; the operation temperature of the pipeline is 180-200 ℃, and urushiol titanium resin is adopted; the running temperature of the pipeline is more than 200 ℃, and organic silicon resin is adopted;
the high temperature resistant protective coating adopts chlorinated rubber anticorrosive coating or chlorinated ether anticorrosive coating or high chlorinated polyethylene anticorrosive coating when the pipeline operating temperature is below 80 ℃; the running temperature of the pipeline is 80-120 ℃, and polyurethane anticorrosive paint is adopted; the operating temperature of the pipeline is 120-150 ℃, and acrylic acid anticorrosive paint is adopted; the operating temperature of the pipeline is 150-200 ℃, and fluorocarbon anticorrosive paint is adopted; the running temperature of the pipeline is more than 200 ℃, and an organic silicon anticorrosive coating is adopted;
adopting 120 impregnating compound when the running temperature of the pipeline is below 150 ℃; adopting a urushiol epoxy impregnating compound at the pipeline operating temperature of 150-180 ℃; adopting a urushiol impregnating compound at the running temperature of the pipeline of 180-200 ℃; and adopting an organic silicon impregnating agent when the running temperature of the pipeline is more than 200 ℃.
2. The method for repairing and reinforcing a fluid conveying pipeline without production stop according to claim 1, wherein the method comprises the following steps: the strength of the pipeline repairing layer (2), the reinforcing layer (3) and the reinforcing layer (4) is more than 1.6 times of that of the repaired pipeline (1).
3. The method for repair reinforcement of a fluid conveying pipeline without production stop according to claim 1, wherein: the surface cleaning adopts a sand blasting rust removal or an explosion-proof rust removal machine to remove rust, the surface cleanliness of the corroded part after the surface cleaning reaches grade Sa3, and the surface roughness Ry40-130 mu m.
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| CN114427632A (en) * | 2020-10-29 | 2022-05-03 | 中国石油化工股份有限公司 | Method for leaking stoppage of glass reinforced plastic pipe under pressure |
| CN115654257A (en) * | 2022-10-26 | 2023-01-31 | 云南电网有限责任公司电力科学研究院 | Pressurized plugging method and pressurized plugging structure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2056207A1 (en) * | 1970-11-16 | 1972-07-06 | Licentia Gmbh | Repairing plastic cable sheathing - by welding a similar strip of plastic into the split |
| CN100451428C (en) * | 2007-07-13 | 2009-01-14 | 天津市巨星防腐检测工程有限公司 | Method for repairing and reinforcing corrosive pipeline by using multilaminar high strength composite materials |
| US9718243B2 (en) * | 2013-08-19 | 2017-08-01 | Fiber Fix Usa, Llc | Method of manufacturing a rigid repair wrap including a laminate disposed laterally within the repair wrap |
| CN104534221B (en) * | 2015-01-06 | 2017-07-11 | 北京力强基业工程技术有限公司 | A kind of method repaired with composite to pipeline strength rehabilitation |
| CN105670556B (en) * | 2016-02-26 | 2017-10-20 | 北京天诚宇新材料技术有限公司 | A kind of petrochemical plant corrosion and protection carbon fiber reinforcement technique |
| CN107138914A (en) * | 2017-04-06 | 2017-09-08 | 马富君 | A kind of restorative procedure of not getting angry of crude oil storage tank |
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2019
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