CN109973753B - Repairing and reinforcing method for gas pipeline - Google Patents
Repairing and reinforcing method for gas pipeline Download PDFInfo
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- CN109973753B CN109973753B CN201910270727.4A CN201910270727A CN109973753B CN 109973753 B CN109973753 B CN 109973753B CN 201910270727 A CN201910270727 A CN 201910270727A CN 109973753 B CN109973753 B CN 109973753B
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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
- F16L55/18—Appliances for use in repairing pipes
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Abstract
The invention relates to a repairing and reinforcing method of a gas pipeline, which is characterized by comprising the following steps: the gas pipe and the outer sleeve are pretreated by a special tool to manufacture a conical film-coated non-woven fabric pipe sleeve, a sealing adhesive tape wound at the lower end of the film-coated non-woven fabric pipe sleeve is utilized to form a sealing layer, and a funnel made of the adhesive tape is used for injecting glue solution into the film-coated non-woven fabric pipe sleeve to realize repair and reinforcement of an indoor gas pipe section. Has the advantages that: aiming at the problem that the repair and reinforcement construction of indoor gas pipe sections is difficult due to the construction environment of the existing kitchen for generally encapsulating and suspending the ceiling on the pipeline, the repair and reinforcement of the indoor gas pipe sections can be satisfactorily completed only by constructing on the floor plate of the floor needing to be repaired and reinforced and without removing the encapsulation and the ceiling of the downstair pipeline, so that the construction period is greatly shortened.
Description
Technical Field
The invention belongs to the technical field of a building pipe, and particularly relates to a repairing and reinforcing method for a gas pipeline.
Background
According to the requirements of building operation regulations in the gas industry, a sleeve is arranged at the position where a gas pipeline penetrates through a floor slab, and the sleeve is filled with paper-reinforced lime or asphalt hemp threads in a shop, but in actual construction due to various reasons, the annular column gap between the gas pipeline and the pipeline is not treated any day long, the outer wall of the gas pipeline is seriously corroded for a long time, and the depth of the outer wall can reach 1-1.5 mm under the effect of high-temperature damp-heat oil gas pollution of a kitchen. Although the operation pressure is low and is generally below 0.02 MPa, the pipeline operation is quite dangerous in the condition, the potential accident hazard is caused, the use safety is influenced, the corrosion position is difficult to be found at ordinary times, once leakage occurs, gas explosion is easy to cause, and the result is not reasonable. Patent document publication No. CN97119962 discloses an indoor gas pipe section repairing and reinforcing method, when the gap between a gas pipe and a sleeve is uniform or can be adjusted to be uniform, the method is characterized in that the construction steps are as follows: 1. carrying out pretreatment: removing the filler between the gas pipe and the sleeve, and removing the rust on the gas pipe; the gap between the gas pipe and the sleeve needs to be adjusted to be uniform; polishing the gas pipe in the upper and lower 50mm areas of the floor plate to obtain the natural metal color, and wiping the surface; 2. and (3) dipping and pouring construction: wrapping and fixing a geotextile on the upper part of a gas pipe to be repaired in a butt-joint manner to form a pipe sleeve, conveying the pipe sleeve to a required position, clamping the lower end of the geotextile pipe sleeve by using a hose clamp, blending glue solution, pouring the glue solution into the geotextile pipe sleeve until the soaking is uniform and the curing is carried out; 3. protection treatment: and brushing antirust primer and surface enamel on the smooth surface of the gas pipe.
In order to prevent accidents, the indoor gas pipe section repairing and reinforcing method replaces a method of replacing a pipeline. After 20 years of actual construction, the method is only applied to repairing indoor gas pipe sections of more than 60 universal gas users, and billions of dollars of reconstruction funds are saved for gas enterprises. The method obtains multiple benefits of safety, economy and environmental protection for gas enterprises. But this method has not been satisfactory for the current construction environment. At present, the family of a gas user can be almost decorated, an indoor gas pipeline is packaged, and a kitchen is hung. The traditional tools such as hooks and the like cannot be used for cleaning fillers between the gas pipe and the outer sleeve pipe during pretreatment, and pipelines in a floor plate of the gas pipe cannot be derusted; during dipping and tank filling construction, when glue is filled into the geotextile sleeve, when the glue is filled with the upper opening of the sleeve, the glue filling must be stopped, and the glue can be continuously filled after long-time glue is discharged from the air in the sleeve, so that the construction period is prolonged; meanwhile, the lower end of the geotextile sleeve cannot be clamped tightly by the hose clamp due to the suspended ceiling in the kitchen, the geotextile sleeve cannot be filled with glue after the geotextile sleeve is manufactured, and the gas pipe and the lower end of the gas outer sleeve are tightly blocked by the cement. Aiming at the current construction environment, the repair of indoor gas pipe sections needs to be researched and developed to overcome the bottleneck problem of influencing the repair and reinforcement of gas pipes.
Disclosure of Invention
The invention aims to overcome the defects of the technology, and provides a method for repairing and reinforcing a gas pipeline, which overcomes the difficulties brought by kitchen encapsulation and ceiling environment to construction and realizes the repair and reinforcement of indoor gas pipeline sections.
In order to achieve the purpose, the invention adopts the following technical scheme: a gas pipeline repairing and reinforcing method is characterized in that: pretreating the gas pipe and the outer sleeve by adopting a special tool; manufacturing a conical film-coated non-woven fabric pipe sleeve, forming a sealing layer by using a sealing adhesive tape wound at the lower end of the film-coated non-woven fabric pipe sleeve, and injecting glue solution into the film-coated non-woven fabric pipe sleeve by using a funnel made of the adhesive tape to realize repair and reinforcement of an indoor gas pipe section; the method comprises the following specific steps:
1) pretreating the fuel pipe and the outer sleeve:
and thirdly, when the filler is arranged between the gas pipe and the outer sleeve: pushing the special flat iron against the filler between the gas pipe and the outer sleeve, and knocking the special flat iron by an iron hammer to push the filler out of the outer sleeve; removing the floating rust on the gas pipe, adjusting the gap between the gas pipe and the outer sleeve, wrapping the special flat iron by an abrasive cloth strip, inserting the special flat iron into the gap between the gas pipe and the outer sleeve, moving the special flat iron up and down to polish the outer wall of the gas pipe and the corrosion layer on the inner wall of the outer sleeve, and polishing the special flat iron to obtain the natural color of metal;
and fourthly, when no filler exists between the gas pipe and the outer sleeve: directly ejecting the outer sleeve out of the floor plate by using special flat iron, wrapping the special flat iron by using an abrasive cloth strip, moving the special flat iron up and down to polish the outer wall corrosion layer of the gas pipe, and polishing the outer wall corrosion layer of the gas pipe to obtain a metal natural color;
3) manufacturing a conical film-coated non-woven fabric pipe sleeve and injecting glue solution:
cutting the coated non-woven fabric into an isosceles trapezoid with a wide upper part and a narrow lower part, wherein the length is more than 35 cm, the upper side width is 9-28 cm, and the lower side width is 8-27 cm;
fifthly, enclosing the cut film-coated non-woven fabric around the gas pipe, splicing the interfaces of two waist edges of the isosceles trapezoid by using adhesive tapes to form a conical film-coated non-woven fabric pipe sleeve with an upper part loose and a lower part tight, longitudinally splicing the adhesive tapes along the interfaces or longitudinally splicing the lap edges of two sides of the first adhesive tape respectively, and winding a plurality of layers of adhesive tapes at the lower end opening of the film-coated non-woven fabric pipe sleeve; forcibly pushing the film-coated non-woven fabric pipe sleeve into the floor layer hole along the gas pipe, wherein part of the adhesive tape at the lower end of the film-coated non-woven fabric pipe sleeve forms a sealed sealing layer;
sixthly, manufacturing a funnel by using an adhesive tape along the upper port of the film-coated non-woven fabric pipe sleeve, injecting the adhesive solution into the funnel, fully opening the sealing and sealing layer at the lower end of the film-coated non-woven fabric pipe sleeve under the action of the gravity of the adhesive solution, enabling the adhesive tape of the sealing and sealing layer to be tightly attached to the gas pipe to play a sealing effect, filling the adhesive solution till the upper port of the funnel is flat, and removing the funnel after the adhesive solution is solidified;
3) and (3) coating the surface of the gas pipe which is not reinforced with primer and finish paint.
The length of the coated non-woven fabric pipe sleeve is more than 35 cm, and the upper layer plate and the lower layer plate are respectively exposed by more than 5 cm after passing through the floor plates.
The special flat iron is vertically cut by a thick-wall steel pipe and is made of 45-55 cm in length, 5 cm angle iron is welded at the top end of the special flat iron, or the special flat iron is made of a stainless steel plate strip which is 45-55 cm in length, 1-1.5 mm in thickness and 4-7 cm in width through stamping, 5 cm stainless steel angle iron is welded at the top end of the special flat iron, and the cross section of the special flat iron is arc-shaped.
Has the advantages that: compared with the prior art, the invention aims at the problem that the repair and reinforcement construction of the indoor gas pipe section is difficult due to the construction environment of the existing kitchen for generally encapsulating and hanging the ceiling on the pipeline, and the repair and reinforcement of the indoor gas pipe section can be satisfactorily completed only by constructing on the floor plate of the floor needing to be repaired and reinforced without removing the encapsulation and hanging ceiling of the downstairs pipeline, so that the construction period is greatly shortened.
Drawings
FIG. 1 is a schematic view of a gas pipe to be repaired and reinforced and an outer sleeve;
2-3 are schematic views of special flat iron ejection fillers;
FIG. 4 is a schematic illustration of an abrasive cloth strip sanding a corrosion layer;
FIG. 5 is a schematic view of a non-woven fabric tube sleeve for making a conical film;
FIG. 6 is a schematic view of a tapered coated nonwoven sleeve pushed into a floor slab hole;
FIG. 7 is a schematic view of a funnel for making the upper opening of a conical filmed nonwoven fabric tube;
FIG. 8 is a schematic illustration of an injection cement;
FIG. 9 is a schematic view showing a state in which the repair reinforcement of the gas pipeline is completed; (abstract figure)
FIGS. 10-11 are schematic diagrams showing the comparison between before and after glue injection at the lower end of the conical film-coated non-woven fabric pipe sleeve;
FIG. 12 is a cut-out profile view of the filmed nonwoven fabric;
FIG. 13 is a schematic view of the gas pipe and the outer sleeve without filler and using special flat iron for ejecting the outer sleeve. In the figure: 1. the building floor plate comprises a gas pipe, 2 parts of an outer sleeve, 3 parts of a filler, 4 parts of a special flat iron, 5 parts of an abrasive cloth strip, 6 parts of a conical coated non-woven fabric pipe sleeve, 6-1 parts of a coated non-woven fabric, 7 parts of glue solution, 8 parts of a tape seal, 9 parts of a seal sealing layer, 10 parts of a funnel, 11 parts of a floor plate.
Detailed Description
The following detailed description of the preferred embodiments will be made in conjunction with the accompanying drawings.
Referring to the attached drawings in detail, the invention provides a repairing and reinforcing method of a gas pipeline, which adopts a special tool to pretreat a gas pipe and an outer sleeve; manufacturing a conical film-coated non-woven fabric pipe sleeve, forming a sealing layer by using a sealing adhesive tape wound at the lower end of the film-coated non-woven fabric pipe sleeve, and injecting glue solution into the film-coated non-woven fabric pipe sleeve by using a funnel made of the adhesive tape to realize repair and reinforcement of an indoor gas pipe section; the method comprises the following specific steps:
see the attached drawings 2-4, 1) for pretreating the gas pipe and the outer sleeve:
when the filler 3 is arranged between the gas pipe 1 and the outer sleeve 2: pushing the special flat iron 4 against the filler between the gas pipe and the outer sleeve, and knocking the special flat iron by an iron hammer to push the filler out of the outer sleeve; removing the floating rust on the gas pipe, adjusting the gap between the gas pipe and the outer sleeve, wrapping the special flat iron by an abrasive cloth strip 5, inserting the special flat iron into the gap between the gas pipe and the outer sleeve, moving the special flat iron up and down to polish the outer wall of the gas pipe and the corrosion layer on the inner wall of the outer sleeve, and polishing the special flat iron to obtain the natural metal color;
referring to fig. 13, when there is no filler between the gas pipe and the outer sleeve: directly ejecting the outer sleeve out of the floor plate by using special flat iron, wrapping the special flat iron by using an abrasive cloth strip, moving the special flat iron up and down to polish the outer wall corrosion layer of the gas pipe, and polishing the outer wall corrosion layer of the gas pipe to obtain a metal natural color;
see in particular figures 5-6 of the drawings,
2) manufacturing a conical film-coated non-woven fabric pipe sleeve 6 and injecting glue solution 7:
cutting the film-coated non-woven fabric 6-1 into an isosceles trapezoid with a wide upper part and a narrow lower part, wherein the length is more than 35 cm, the upper side width is 9-28 cm, and the lower side width is 8-27 cm; the cut film-coated non-woven fabric surrounds the gas pipe, the two waist edges of the isosceles trapezoid are butted and are bonded by using an adhesive tape to form an adhesive tape seal 8, a conical film-coated non-woven fabric pipe sleeve with an upper part loose and a lower part tight is formed, the adhesive tape is longitudinally bonded one way along the joint or is longitudinally bonded one way on each of the overlapping edges of the two sides of the first adhesive tape, and a plurality of layers of adhesive tapes are wound on the lower port of the film-coated non-woven fabric pipe; forcibly pushing the film-coated non-woven fabric pipe sleeve into the floor layer hole along the gas pipe, and forming a sealing layer 9 by part of the adhesive tape at the lower end of the film-coated non-woven fabric pipe sleeve;
referring to fig. 7-9 in detail, a funnel 10 is manufactured by using an adhesive tape along the upper port of the coated non-woven fabric pipe sleeve, glue is injected into the funnel, a sealing and sealing layer at the lower end of the coated non-woven fabric pipe sleeve is fully opened under the gravity action of the glue, the adhesive tape of the sealing and sealing layer is tightly attached to a gas pipe to achieve the sealing effect, the glue is fully injected until the upper port of the funnel is flat, and the funnel is removed after the glue is solidified;
3) and (3) coating the surface of the gas pipe which is not reinforced with primer and finish paint.
The length of the coated non-woven fabric pipe sleeve is more than 35 cm, and the upper layer plate and the lower layer plate are respectively exposed by more than 5 cm after passing through the floor plate 11.
The special flat iron is vertically cut by a thick-wall steel pipe and is made of 45-55 cm in length, 5 cm angle iron is welded at the top end of the special flat iron, or the special flat iron is made of a stainless steel plate strip which is 45-55 cm in length, 1-1.5 mm in thickness and 4-7 cm in width through stamping, 5 cm stainless steel angle iron is welded at the top end of the special flat iron, and the cross section of the special flat iron is arc-shaped.
The glue solution obtained in step 2) of this example comprises the following components in parts by weight
100 parts of unsaturated polyester resin glue solution
2-6 parts of cycloethanone peroxide dibutyl ester curing agent
1-5 parts of cobalt naphthenate styrene accelerator, and the curing time of the glue solution is 1-2 hours.
The glue solution of the method is selected from commercial resin, such as epoxy resin E-42, or unsaturated polyester resin 2608 or 3301 and 306. Flame retardant such as quartz powder and talcum powder is added into the resin to prepare flame-retardant resin glue solution.
The special flat iron is made by vertically cutting a thick-wall steel pipe, the length of the special flat iron is 45-55 cm, and the top end of the special flat iron is welded with an angle iron of 5 cm, or stainless steel with the length of 45-55 cm, the thickness of 1-1.5 mm and the width of 4-7 cm is pressed into an arc shape, and the top end of the special flat iron is welded with a stainless steel angle iron of 5 cm.
Examples
The method is compared with the original construction method
1) The original construction method comprises the following steps: carrying out pretreatment: removing the filler between the gas pipe and the outer sleeve; if possible, the gap between the gas pipe and the outer sleeve pipe is adjusted to be uniform; only the gas pipe in the area 50mm above and below the floor plate can be polished to be metallic and the surface can be wiped, but the pipeline in the floor plate of the gas pipe cannot be derusted;
the method comprises the steps that on the basis of original rust removal, strip-shaped abrasive cloth is used for wrapping special flat iron and pushing the special flat iron into a space between a gas pipe and an outer sleeve in a floor plate to remove rust, the bonding force between the gas pipe of the floor plate after rust removal and the repairing and reinforcing outer sleeve is increased in multiples, and the service life of the repaired and reinforced gas pipe is increased in multiples;
2) the original construction method comprises the following steps: dipping and tank filling construction: when the gaps between the gas pipe and the sleeve are uniform, the upper part of the gas pipe to be repaired is wrapped and fixed in a butt-joint mode to form the sleeve, the sleeve is conveyed to a required position, the lower end of the geotextile is clamped tightly by the hose clamp, glue solution is prepared, the geotextile sleeve is filled with the glue solution until the geotextile sleeve is uniformly soaked and cured. When glue solution and the upper opening of the sleeve are flat, the long time is required, and after the air in the sleeve is exhausted by the glue solution, the glue is continuously poured, so that the construction time is prolonged;
the method is characterized in that a conical film-coated non-woven fabric pipe sleeve funnel is manufactured, after the whole funnel is filled with glue liquid, glue filling personnel can perform next pipe sleeve glue filling, waiting for air exhaust time is not needed during glue filling, construction efficiency is improved by more than two times compared with the original method, and a large amount of labor cost is saved.
3) The original construction method comprises the following steps: the lower end of the geotextile sleeve cannot be clamped tightly by the hose clamp because all suspended ceilings of the current gas user kitchen cannot be clamped tightly, so the geotextile sleeve cannot be filled with glue;
the method comprises the following steps: the method comprises the following steps of (1) manufacturing a rectangular non-woven fabric which is originally used as a geotextile sleeve into an inverted trapezoid with a wide upper part and a narrow lower part, sealing edges of opposite openings, manufacturing a conical film-coated non-woven fabric pipe sleeve, forcibly pushing the conical film-coated non-woven fabric pipe sleeve into a floor plate to a preset position, enabling a part of adhesive tape to enter between the conical film-coated non-woven fabric pipe sleeve and a gas pipe due to friction force, and naturally tightening the lower opening of the pipe sleeve into a sealed layer; after glue injection, due to gravity, the glue solution can press the adhesive tape to the gas pipe, the adhesive tape can well seal the glue solution until solidification, the hose clamp is omitted, the problem that the kitchen ceiling of a gas user cannot be constructed is solved, and the working efficiency is improved.
4) The original construction method comprises the following steps: when the gap between the gas pipe and the sleeve is not uniform and the construction can not be carried out according to the working steps, the bottom of the sleeve is plugged by using cement, after the cement is solidified, a proper amount of geotextile is filled into the gap between the gas pipe and the sleeve, glue solution is prepared, the glue solution is filled into the gap until the upper opening of the sleeve is horizontal, and the cement is solidified. In actual construction, the lower ends of the gas pipe and the gas outer sleeve are difficult to tightly plug by using cement gum, and the sleeve cannot be filled with cement gum.
The method comprises the following steps: when the gap between the gas pipe and the outer sleeve is uneven or is close to each other in construction, the gas outer sleeve is directly hammered out of the floor plate by using a special flat iron under the action of an iron hammer, the damage to the floor plate is small, the floor plate is easy to recover after construction, the construction time and labor are saved, and a gas user can easily accept the gas pipe.
The construction steps of the gas pipeline repairing and reinforcing method are as follows:
1. carrying out pretreatment:
when a gap exists between the gas pipe and the outer sleeve, a construction space is reserved, special flat iron is used for propping against fillers between the gas pipe and the outer sleeve, an iron hammer is used for knocking the special flat iron to push the fillers between the gas pipe and the outer sleeve out of the outer sleeve, floating rust on the gas pipe is removed, the gap between the gas pipe and the outer sleeve is adjusted, a piece of abrasive cloth is used for wrapping the special flat iron in a surrounding mode, the special flat iron wrapping the abrasive cloth is inserted between the gas pipe and the sleeve and moves up and down to polish the corrosion layer in the gas pipe and the sleeve, and the metal true color is polished;
when the gas pipe and the outer sleeve have no clearance or no construction space when the position is incorrect, the outer sleeve is pushed out of the floor plate by special flat iron, the special flat iron is wrapped by an abrasive cloth strip, the special flat iron wrapping the abrasive cloth is inserted between the gas pipe and the sleeve, the special flat iron moves up and down to polish the corrosion layer in the gas pipe and the sleeve, and the natural color of metal is polished.
See the attached drawings 10-11, 2. construction of wrapping, bonding and pouring glue solution of the film-covered non-woven fabric:
the ladder-shaped length of the shape with the wide top and the narrow bottom is not less than 35 cm, a gas pipe is wound and wrapped with a tape bonding interface to form a film-covered non-woven pipe sleeve which is loose from top to bottom, the lower end of the gas pipe is wound and sealed with a plurality of layers of tapes, the film-covered non-woven pipe sleeve is pushed into a floor plate by force, a part of sealing tapes at the lower end of the film-covered non-woven pipe sleeve can enter between the gas pipe and the film-covered non-woven pipe sleeve under the action of friction force to form a sealing layer with a certain sealing effect, the upper end of the film-covered non-woven pipe sleeve is used as a funnel, prepared glue is injected into the funnel, the sealing layer at the lower end of the film-covered non-woven pipe sleeve can be fully opened under the action of the gravity of glue dipping, the sealing layer tapes can be tightly attached to the. And (3) filling glue solution into the funnel until the upper opening of the funnel is flat, removing the funnel after the glue solution is solidified, and enabling the coated non-woven fabric pipe sleeve to have the length of 35 cm to pass through the floor plate and then to be vertically separated from each floor plate by more than 5 cm.
3. The unreinforced gas pipe is brushed with primer and finish paint, and a Meite BK-104 rust layer conversion agent of Shanghai' an chemical industry Co.
The above detailed description of the method for repairing and reinforcing a gas pipe with reference to the embodiments is illustrative and not restrictive, and several embodiments may be enumerated in accordance with the limitations of the present invention, so that changes and modifications may be made without departing from the spirit of the present invention.
Claims (1)
1. A gas pipeline repairing and reinforcing method is characterized in that: pretreating the gas pipe and the outer sleeve by using a tool; manufacturing a conical film-coated non-woven fabric pipe sleeve, forming a sealing layer by using a sealing adhesive tape wound at the lower end of the film-coated non-woven fabric pipe sleeve, and injecting glue solution into the film-coated non-woven fabric pipe sleeve by using a funnel made of the adhesive tape to realize repair and reinforcement of an indoor gas pipe section; the method comprises the following specific steps:
1) pretreating the fuel pipe and the outer sleeve:
when the filler is arranged between the gas pipe and the outer sleeve: pushing flat iron against the filler between the gas pipe and the outer sleeve, and knocking the flat iron by an iron hammer to push the filler out of the outer sleeve; removing the floating rust on the gas pipe, adjusting the gap between the gas pipe and the outer sleeve, wrapping the flat iron by an abrasive cloth strip, inserting the flat iron into the gap between the gas pipe and the outer sleeve, moving the flat iron up and down to polish the outer wall of the gas pipe and the corrosion layer on the inner wall of the outer sleeve, and polishing the flat iron to obtain the natural color of metal;
secondly, when no filler is filled between the gas pipe and the outer sleeve: directly ejecting the outer sleeve out of the floor plate by using flat iron, wrapping the flat iron by using abrasive cloth strips, moving the flat iron up and down to polish the outer wall corrosion layer of the gas pipe, and polishing the outer wall corrosion layer to obtain a metal natural color; the flat iron is made by vertically cutting a thick-wall steel pipe and is 45-55 cm long, 5 cm angle iron is welded at the top end of the flat iron or is made by stamping a stainless steel plate strip which is 45-55 cm long, 1-1.5 mm thick and 4-7 cm wide, 5 cm stainless steel angle iron is welded at the top end of the flat iron, and the cross section of the flat iron is arc-shaped;
2) manufacturing a conical film-coated non-woven fabric pipe sleeve and injecting glue solution:
cutting the coated non-woven fabric into an isosceles trapezoid with a wide upper part and a narrow lower part, wherein the length of the isosceles trapezoid is more than 35 cm, the width of the upper side of the isosceles trapezoid is 9-28 cm, and the width of the lower side of the isosceles trapezoid is 8-27 cm;
secondly, the cut film-coated non-woven fabric surrounds the gas pipe, the two waist edges of the isosceles trapezoid are butted and are bonded with the interfaces by using adhesive tapes to form a conical film-coated non-woven fabric pipe sleeve which is loose at the upper part and tight at the lower part, the adhesive tapes are longitudinally bonded one time along the interfaces or are longitudinally bonded one time respectively at the lapping edges of the two sides of the first adhesive tape, and a plurality of layers of adhesive tapes are wound at the lower end opening of the film-coated non-woven fabric; the film-coated non-woven fabric pipe sleeve is pushed into a preset position in a floor layer hole along a gas pipe with force, a part of adhesive tape enters between the conical film-coated non-woven fabric pipe sleeve and the gas pipe due to friction force, and the lower end of the film-coated non-woven fabric pipe sleeve is naturally tightened through multiple layers of adhesive tapes to form a sealed layer;
thirdly, a funnel is manufactured by using an adhesive tape along the upper port of the coated non-woven fabric pipe sleeve, adhesive liquid is injected into the funnel, a sealing and sealing layer at the lower end of the coated non-woven fabric pipe sleeve is fully opened under the action of the gravity of the adhesive liquid, the adhesive liquid can press the adhesive tape to the gas pipe, the adhesive tape of the sealing and sealing layer is enabled to be tightly attached to the gas pipe to achieve a sealing effect, the adhesive liquid is filled to the upper port of the funnel to be flat, and the funnel is removed after the; the hose clamp is omitted, the length of the coated non-woven fabric hose sleeve is 35 cm, and the upper part and the lower part of each coated non-woven fabric hose sleeve are exposed out of the floor plate by more than 5 cm after passing through the floor plate;
3) and (3) coating the surface of the gas pipe which is not reinforced with primer and finish paint.
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| CN201910270727.4A CN109973753B (en) | 2019-04-04 | 2019-04-04 | Repairing and reinforcing method for gas pipeline |
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| CN201910270727.4A CN109973753B (en) | 2019-04-04 | 2019-04-04 | Repairing and reinforcing method for gas pipeline |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2304709Y (en) * | 1997-08-29 | 1999-01-20 | 宁克远 | Externally repaired structure of indoor pipes out of floor |
| CN1064732C (en) * | 1997-10-30 | 2001-04-18 | 华北有色防腐安装工程公司天津分公司 | Indoor gas pipeline repairing and reinforcement method |
| CN101275701A (en) * | 2008-05-20 | 2008-10-01 | 王好兵 | Restoring and fastening method for leading fuel gas pipe-line from outdoor to indoor |
| RU2435096C1 (en) * | 2010-08-04 | 2011-11-27 | Юлия Алексеевна Щепочкина | Emergency collar |
| CN202540103U (en) * | 2012-01-20 | 2012-11-21 | 河南大有能源股份有限公司千秋煤矿 | Rust remover |
| CN103711988B (en) * | 2013-12-21 | 2015-10-21 | 深圳市百安百科技有限公司 | A kind of perfusion restorative procedure of underwater complex structure |
| CN105003789A (en) * | 2015-08-04 | 2015-10-28 | 天津卓达管道机械制造有限公司 | Emergency rush repair guarantee pry system for oil and gas pipeline |
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