CN111174024B - Pipeline repairing method with collapse and collapse prevention function - Google Patents
Pipeline repairing method with collapse and collapse prevention function Download PDFInfo
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- CN111174024B CN111174024B CN202010050411.7A CN202010050411A CN111174024B CN 111174024 B CN111174024 B CN 111174024B CN 202010050411 A CN202010050411 A CN 202010050411A CN 111174024 B CN111174024 B CN 111174024B
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- collapse
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- flexible hose
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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
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
- F16L55/1652—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the flexible liner being pulled into the damaged section
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
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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
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
- F16L55/1656—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section materials for flexible liners
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a pipeline repairing method with an anti-collapse and anti-flat function, which comprises the following steps: s1, coating a first adhesive glue layer on the outer surface of the flexible hose; s2, winding a film strip with hot melting performance on the outer surface of the flexible hose, wherein the inner side of the film strip is coated with a second adhesive glue layer and fibers for providing connection strength; s3, pulling the flexible hose wound with the film strip into the original pipeline; and S4, introducing a pressurizing heat source into the flexible hose, melting the film tape by the pressurizing heat source, compounding the first bonding adhesive layer and the second bonding adhesive layer to form a composite bonding adhesive layer, and bonding the outer wall of the flexible hose and the inner wall of the original pipeline together by the composite bonding adhesive layer to finish pipeline repair. After the pipeline is repaired by the method, the flexible hose inside has good anti-collapse and anti-flat capability; the small hole on the original pipeline can be repaired to a certain extent; the composite adhesive layer has a certain ring stiffness for counteracting negative pressure.
Description
Technical Field
The invention relates to the technical field of pipeline repair, in particular to a pipeline repair method with an anti-collapse and anti-flat function.
Background
Currently, pipelines have become an indispensable infrastructure in human life, such as water, gas, water, exhaust, and the like. Due to corrosion, breakage, destruction, etc. of the pipes caused by natural conditions and man-made causes, maintenance needs to be performed in time.
In the prior art, a common pipeline repairing method is to insert a flexible repairing hose into an original pipeline, wherein the hose is generally of a three-layer structure, namely an outer adhesive layer, a braided layer and an inner adhesive layer. The braided layer of flexible composite hose generally adopts non-metallic fiber to weave and forms, and different non-metallic material such as PU, PE etc. can be selected according to the difference of using to inside and outside glue film. The flexible hose is generally characterized by being flat and coiled, and the length of a single hose is generally 100-5000 meters.
Because the flexible hose has the characteristics of being flat, the hose is not resistant to negative pressure in the actual use process (for example, a pump in the pipeline stops, the tail end still drains water, negative pressure is easily formed), and the hose is easy to collapse (when the original pipeline has a leakage point, the flexible repair hose is easy to partially collapse due to external pressure). The braided layer of the flexible hose is a flexible fiber layer and has no negative pressure resistance; the hardness of the inner and outer rubber layers is not high, and the inner and outer rubber layers do not have the negative pressure resistance. Therefore, a method for repairing a pipe with an anti-collapse function is needed.
Disclosure of Invention
The invention aims to provide a pipeline repairing method with an anti-collapse function, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a pipeline repairing method with an anti-collapse function comprises the following steps:
s1, coating a first adhesive glue layer on the outer surface of the flexible hose;
s2, winding a film strip with hot melting performance on the outer surface of the flexible hose, wherein the inner side of the film strip is coated with a second adhesive glue layer and fibers for providing connection strength;
s3, pulling the flexible hose wound with the film strip into the original pipeline;
and S4, introducing a pressurizing heat source into the flexible hose, melting the film tape by the pressurizing heat source, compounding the first bonding adhesive layer and the second bonding adhesive layer to form a composite bonding adhesive layer, and bonding the outer wall of the flexible hose and the inner wall of the original pipeline together by the composite bonding adhesive layer to finish pipeline repair.
As a further scheme of the invention, the flexible hose comprises an inner rubber layer, a woven layer and an outer rubber layer which are compounded together from inside to outside, wherein the inner rubber layer and the outer rubber layer are both made of TPU materials, and the woven layer is woven by polyester industrial filaments.
As a further scheme of the invention, the film strip adopts an EVA film.
As a further scheme of the invention, the fiber adopts glass fiber yarn.
As a further aspect of the present invention, in the step S2, the film strip is wound around the outer surface of the flexible hose in a full-pipe spiral winding manner.
As a further aspect of the present invention, the pressurized heat source in step S4 is pressurized steam, pressurized hot air or pressurized hot water.
As a further scheme of the invention, the first adhesive layer is made of an epoxy resin material A, and the epoxy resin material A is composed of the following raw materials in parts by weight: 80-90 parts of epoxy resin, 13-16 parts of alumina filler, 7-12 parts of polyethylene glycol, 5-10 parts of polycarboxylic anhydride, 30-40 parts of curing agent, 0.5-0.8 part of defoaming agent, 0.2-0.5 part of coupling agent and 2-4 parts of toughening agent.
As a further scheme of the invention, the second adhesive layer is made of an epoxy resin B material, and the epoxy resin B material is composed of the following raw materials in parts by weight: 110-120 parts of epoxy resin, 20-25 parts of alumina filler, 50-55 parts of curing agent, 0.5-0.8 part of defoaming agent, 0.2-0.5 part of coupling agent and 2-4 parts of toughening agent.
Compared with the prior art, the invention has the beneficial effects that: after the pipeline is repaired by the method, the flexible hose inside has good anti-collapse and anti-flat capability; the flexible hose can have certain repair capacity on the small hole on the original pipeline; the first adhesive layer and the second adhesive layer are compounded to form a compound adhesive layer with certain ring stiffness for offsetting negative pressure; the composite adhesive layer has certain adhesive force with the original pipeline, and can provide reliable anti-collapse capability.
Drawings
Fig. 1 is a schematic view of the internal cross-section structure of a repaired pipe.
In the figure: 100-flexible hose, 200-original pipeline, 1-inner adhesive layer, 2-woven layer, 3-outer adhesive layer, 4-convex part, 5-first adhesive layer, 6-second adhesive layer, 7-thin film band and 8-glass fiber yarn.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1: a pipeline repairing method with an anti-collapse function comprises the following steps:
s1, coating a first adhesive glue layer 5 on the outer surface of the flexible hose 100;
s2, winding a film tape 7 with hot-melt property on the outer surface of the flexible hose 100, wherein the inner side of the film tape 7 is coated with the second adhesive glue layer 6 and the fiber for providing the connection strength;
s3, pulling the flexible hose 100 wound with the film strip 7 into the original pipeline 200;
s4, introducing a pressurizing heat source into the flexible hose 100, wherein the pressurizing heat source melts the film tape 7, and the first bonding adhesive layer 5 and the second bonding adhesive layer 6 are compounded to form a composite bonding adhesive layer, and the outer wall of the flexible hose 100 and the inner wall of the original pipeline 200 are bonded together by the composite bonding adhesive layer, so that pipeline repair is completed.
The flexible hose 100 comprises an inner rubber layer 1, a woven layer 2 and an outer rubber layer 3 which are compounded together from inside to outside, the inner rubber layer 1 and the outer rubber layer 3 are made of TPU materials, and the woven layer 2 is formed by weaving polyester industrial filaments. The film belt 7 is made of an EVA film. The fiber adopts glass fiber yarn 8.
In the step S2, the film strip 7 is wound around the outer surface of the flexible hose 100 in a full-pipe spiral winding manner. The pressurized heat source in the step S4 is pressurized steam, pressurized hot air, or pressurized hot water. It is obvious that the pressurizing and heating can also be performed by means of pressurized air in combination with heat radiation.
The first adhesive layer 5 is made of an epoxy resin A material, and the epoxy resin A material is composed of the following raw materials in parts by weight: 80 parts of epoxy resin, 13 parts of alumina filler, 7 parts of polyethylene glycol, 5 parts of polycarboxylic anhydride, 30 parts of curing agent, 0.5 part of defoaming agent, 0.2 part of coupling agent and 2 parts of toughening agent.
The second adhesive layer 6 is made of an epoxy resin B material, and the epoxy resin B material is composed of the following raw materials in parts by weight: 110 parts of epoxy resin, 20 parts of alumina filler, 50 parts of curing agent, 0.5 part of defoaming agent, 0.2 part of coupling agent and 2 parts of toughening agent. The fixing agent adopts phthalic anhydride, tetrahydrophthalic anhydride, methyl hexahydrophthalic anhydride and 2-methylimidazole in a weight ratio of 15:20:7: 3; the defoaming agent adopts emulsified methyl silicone oil; the coupling agent adopts propyl triethoxy silane; the toughening agent adopts polyurethane rubber. Tests show that the water absorption rate of the composite adhesive layer formed by compositely hardening the first adhesive glue layer 5 and the second adhesive glue layer 6 is less than 0.1 in 24 hours, and the compressive strength is 4.1Kg/mm2The impact strength is 7.2Kg-cm/cm2. The composite adhesive layer can provide a good bonding effect, bonding is firm and stable, and the service life is long.
Example 2: the pipe repairing method with the collapse and flat preventing function is different from the embodiment 1 in that the epoxy resin A material is composed of the following raw materials in parts by weight: 90 parts of epoxy resin, 16 parts of alumina filler, 12 parts of polyethylene glycol, 10 parts of polycarboxylic anhydride, 40 parts of curing agent, 0.8 part of defoaming agent, 0.5 part of coupling agent and 4 parts of toughening agent.
The epoxy resin B material is prepared from the following raw materials in parts by weight: 120 parts of epoxy resin, 25 parts of alumina filler, 55 parts of curing agent, 0.8 part of defoaming agent, 0.5 part of coupling agent and 4 parts of toughening agent. Tests show that the water absorption rate of the composite adhesive layer formed by compositely hardening the first adhesive glue layer 5 and the second adhesive glue layer 6 is less than 0.1 in 24 hours, and the compressive strength is 3.9Kg/mm2The impact strength is 6.8Kg-cm/cm2. The composite adhesive layer can provide a good bonding effect, bonding is firm and stable, and the service life is long.
Example 3: the difference between the method for repairing the pipeline with the collapse and flat prevention function and the embodiment 1 is that the epoxy resin A material is composed of the following raw materials in parts by weight: 85 parts of epoxy resin, 15 parts of alumina filler, 10 parts of polyethylene glycol, 7 parts of polycarboxylic anhydride, 35 parts of curing agent, 0.7 part of defoaming agent, 0.3 part of coupling agent and 3 parts of toughening agent.
The epoxy resin B material is prepared from the following raw materials in parts by weight: 115 parts of epoxy resin, 23 parts of alumina filler, 53 parts of curing agent, 0.7 part of defoaming agent, 0.3 part of coupling agent and 3 parts of toughening agent. Tests show that the water absorption rate of the composite adhesive layer formed by compositely hardening the first adhesive glue layer 5 and the second adhesive glue layer 6 is less than 0.1 in 24 hours, and the compressive strength is 3.7Kg/mm2The impact strength is 6.5Kg-cm/cm2. The composite adhesive layer can provide a good bonding effect, bonding is firm and stable, and the service life is long.
In the method, the second adhesive layer 6 is wrapped on the first adhesive layer 5 in a full-pipe spiral winding mode through the film belt 7 with hot melting performance, so that the operation and the implementation are convenient; the flexible hose 100 wound with the film belt 7 is inserted into the original pipeline 200, a pressurizing heat source is introduced into the flexible hose 100, the film belt 7 can be melted by the pressurizing heat source, the first bonding adhesive layer 5 and the second bonding adhesive layer 6 are compounded to form a composite bonding layer, the outer adhesive layer 3 of the flexible hose 100 is bonded with the inner wall of the original pipeline 200 through the composite bonding layer, and the flexible hose 100 has certain mechanical strength, good collapse and flat preventing capacity, strong negative pressure resisting capacity and good pipeline repairing effect.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. A pipeline repairing method with an anti-collapse and anti-flat function is characterized in that: the method comprises the following steps:
s1, coating a first adhesive glue layer on the outer surface of the flexible hose;
s2, winding a film strip with hot melting performance on the outer surface of the flexible hose, wherein the inner side of the film strip is coated with a second adhesive glue layer and fibers for providing connection strength;
s3, pulling the flexible hose wound with the film strip into the original pipeline;
and S4, introducing a pressurizing heat source into the flexible hose, melting the film tape by the pressurizing heat source, compounding the first bonding adhesive layer and the second bonding adhesive layer to form a composite bonding adhesive layer, and bonding the outer wall of the flexible hose and the inner wall of the original pipeline together by the composite bonding adhesive layer to finish pipeline repair.
2. The method for repairing a pipe with an anti-collapse and anti-collapse function as claimed in claim 1, wherein: the flexible hose comprises an inner rubber layer, a woven layer and an outer rubber layer which are compounded together from inside to outside, wherein the inner rubber layer and the outer rubber layer are both made of TPU materials, and the woven layer is formed by weaving polyester industrial filaments.
3. The method for repairing a pipe with an anti-collapse and anti-collapse function as claimed in claim 1, wherein: the film belt is made of an EVA film.
4. The method for repairing a pipe with an anti-collapse and anti-collapse function as claimed in claim 1, wherein: the fiber is glass fiber yarn.
5. The method for repairing a pipe with an anti-collapse and anti-collapse function as claimed in claim 1, wherein: in the step S2, the film strip is wound around the outer surface of the flexible hose in a full-pipe spiral winding manner.
6. The method for repairing a pipe with an anti-collapse and anti-collapse function as claimed in claim 1, wherein: the pressurized heat source in the step S4 is pressurized steam, pressurized hot air, or pressurized hot water.
7. The method for repairing a pipe with an anti-collapse and anti-collapse function as claimed in claim 1, wherein: the first adhesive layer is made of an epoxy resin A material, and the epoxy resin A material is composed of the following raw materials in parts by weight: 80-90 parts of epoxy resin, 13-16 parts of alumina filler, 7-12 parts of polyethylene glycol, 5-10 parts of polycarboxylic anhydride, 30-40 parts of curing agent, 0.5-0.8 part of defoaming agent, 0.2-0.5 part of coupling agent and 2-4 parts of toughening agent.
8. The method for repairing a pipe with an anti-collapse and anti-collapse function as claimed in claim 1, wherein: the second adhesive layer is made of an epoxy resin B material, and the epoxy resin B material is composed of the following raw materials in parts by weight: 110-120 parts of epoxy resin, 20-25 parts of alumina filler, 50-55 parts of curing agent, 0.5-0.8 part of defoaming agent, 0.2-0.5 part of coupling agent and 2-4 parts of toughening agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010050411.7A CN111174024B (en) | 2020-01-14 | 2020-01-14 | Pipeline repairing method with collapse and collapse prevention function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010050411.7A CN111174024B (en) | 2020-01-14 | 2020-01-14 | Pipeline repairing method with collapse and collapse prevention function |
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| Publication Number | Publication Date |
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| CN111174024A CN111174024A (en) | 2020-05-19 |
| CN111174024B true CN111174024B (en) | 2021-08-24 |
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| CN202010050411.7A Active CN111174024B (en) | 2020-01-14 | 2020-01-14 | Pipeline repairing method with collapse and collapse prevention function |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202007004631U1 (en) * | 2007-03-29 | 2008-08-07 | Jt-Elektronik Gmbh | Renovation packer with inliner mat |
| CN202327392U (en) * | 2011-11-23 | 2012-07-11 | 浙江伟星新型建材股份有限公司 | Plugging type fiber braided strap winding and reinforcing composite tube |
| CN107345612A (en) * | 2016-11-09 | 2017-11-14 | 上海英泰塑胶股份有限公司 | Internal pressure deformation formula internal lining pipe and its application method for existing pipe lining |
| CN109084115A (en) * | 2018-09-13 | 2018-12-25 | 河北省特种设备监督检验研究院 | A kind of pressure conduit plugging device |
| CN209725501U (en) * | 2019-04-09 | 2019-12-03 | 山东泰丰新水管业股份有限公司 | A kind of PE feed pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018106561A1 (en) * | 2018-03-20 | 2019-09-26 | Buergofol GmbH | Hose liner for the rehabilitation of a canal |
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2020
- 2020-01-14 CN CN202010050411.7A patent/CN111174024B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202007004631U1 (en) * | 2007-03-29 | 2008-08-07 | Jt-Elektronik Gmbh | Renovation packer with inliner mat |
| CN202327392U (en) * | 2011-11-23 | 2012-07-11 | 浙江伟星新型建材股份有限公司 | Plugging type fiber braided strap winding and reinforcing composite tube |
| CN107345612A (en) * | 2016-11-09 | 2017-11-14 | 上海英泰塑胶股份有限公司 | Internal pressure deformation formula internal lining pipe and its application method for existing pipe lining |
| CN109084115A (en) * | 2018-09-13 | 2018-12-25 | 河北省特种设备监督检验研究院 | A kind of pressure conduit plugging device |
| CN209725501U (en) * | 2019-04-09 | 2019-12-03 | 山东泰丰新水管业股份有限公司 | A kind of PE feed pipe |
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| CN111174024A (en) | 2020-05-19 |
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