CN114458842A - Composite hose processing and construction process for repairing tap water pipe - Google Patents
Composite hose processing and construction process for repairing tap water pipe Download PDFInfo
- Publication number
- CN114458842A CN114458842A CN202111549792.4A CN202111549792A CN114458842A CN 114458842 A CN114458842 A CN 114458842A CN 202111549792 A CN202111549792 A CN 202111549792A CN 114458842 A CN114458842 A CN 114458842A
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- Prior art keywords
- resin system
- composite hose
- water
- repairing
- repair
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
- F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
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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
- F16L55/163—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a ring, a band or a sleeve being pressed against the inner surface of the pipe
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a composite hose processing and construction process for repairing a tap water pipe, which adopts a co-extrusion process to manufacture a composite hose by manufacturing felt and coating plastics, wherein the co-extrusion middle layer is hot melt adhesive, and the outer layer is PE; vacuumizing the composite hose, filling a thermosetting resin system, and uniformly pressing and rolling; cleaning and ventilating the old pipeline for drying; introducing the repair tube by using a turning method; replacing the hot air or hot water in the repair pipe to solidify the repair pipe; gradually replacing the hot air or hot water with cold air or cold water, and cooling and shaping the repair pipe under pressure. The invention has the beneficial effects that: the hose is good before the restoration, is fit for changes such as bending of pipeline, and tubular product ring rigidity after the restoration is high, can effectively resist the influence of external pressure and ground load, and is laminated well with old pipeline, adopts food level macromolecular material with the water contact surface, does not have the influence to quality of water, takes the felt enhancement layer, and the fibre distributes evenly, and the stable in structure after the solidification, intensity and bonding are good, and structure and simple process are little to old pipeline influence.
Description
Technical Field
The invention relates to the technical field of hose manufacturing, in particular to a processing and construction process of a composite hose for repairing a tap water pipe.
Background
The urban tap water supply pipe is mostly buried underground, is easy to corrode and age for a long time, particularly, the urban land buildings are mostly old, underground pipe networks are complicated and complicated, the maintenance is very difficult, time and labor are wasted, and the traffic and the daily life of residents are easily influenced. Trenchless repair is a quick and effective repair method, and time and cost are saved. The CIPP hose cured by heat or ultraviolet light is widely applied to repair of a non-pressure drain pipe. The requirement of a water supply pipeline is strict compared with that of a drainage pipeline, the water supply pipeline can bear internal pressure and external pressure, the sealing performance is good, the water quality is not influenced, and no effective trenchless repairing pipe is suitable for repairing the water supply pipeline at present.
Disclosure of Invention
The invention aims to provide a processing and construction process of a composite hose for repairing a tap water pipe, which aims to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a composite hose for repairing a tap water pipe comprises a thermosetting resin layer, a hot melt adhesive layer and a thermoplastic polymer layer which are sequentially arranged from outside to inside.
Preferably, the thermosetting resin layer includes an unsaturated polyester system, a vinyl ester resin system, an epoxy resin system, a polyurethane resin system, a phenolic resin system and a cyanate ester resin system.
Preferably, the thermoplastic polymer layer is food grade.
A composite hose processing and construction process for repairing a tap water pipe comprises the following steps:
the method comprises the following steps: adopting a co-extrusion process to manufacture a felt plastic-coated composite hose, wherein the co-extrusion middle layer is hot melt adhesive, and the outer layer is PE;
step two: vacuumizing the composite hose, filling a thermosetting resin system, and uniformly pressing and rolling;
step three: cleaning and ventilating the old pipeline for drying;
step four: introducing the repair tube by using a turning method;
step five: replacing the hot air or hot water in the repair pipe to solidify the repair pipe;
step six: gradually replacing the hot air or hot water with cold air or cold water, and cooling and shaping the repair pipe under pressure.
Preferably, in the fourth step, the turning method is air turning or water turning.
Preferably, in the second step, the thermosetting resin system includes, but is not limited to, an unsaturated polyester system, a vinyl ester resin system, an epoxy resin system, a polyurethane resin system, a phenolic resin system, and a cyanate ester resin system.
Advantageous effects
The composite hose processing and construction process for repairing the tap water pipe, provided by the invention, has the advantages that the hose is good in flexibility before repair, is suitable for changes such as bending of a pipeline, is high in rigidity of a repaired pipe ring, can effectively resist the influence of external pressure and ground load, is well attached to an old pipeline, can resist the influence of a water hammer effect, adopts a food-grade high polymer material on a water contact surface, has no influence on water quality, is provided with a felt reinforcing layer, is uniform in fiber distribution, stable in structure after curing, good in strength and bonding, simple in structure and process, stable in size and small in influence on the old pipeline.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention before and after construction.
Reference numerals
1-thermoplastic polymer layer, 2-hot melt adhesive layer and 3-thermosetting resin layer.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Examples
As shown in fig. 1, a composite hose for repairing a water pipe includes a thermosetting resin layer 3, a hot melt adhesive layer 2, and a thermoplastic polymer layer 1, which are sequentially disposed from outside to inside.
Preferably, the thermosetting resin layer 3 includes an unsaturated polyester system, a vinyl ester resin system, an epoxy resin system, a urethane resin system, a phenolic resin system, and a cyanate ester resin system.
Preferably, the thermoplastic polymer layer 1 is food grade.
A composite hose processing and construction process for repairing a tap water pipe comprises the following steps:
the method comprises the following steps: adopting a co-extrusion process to manufacture a felt plastic-coated composite hose, wherein the co-extrusion middle layer is hot melt adhesive, and the outer layer is PE;
step two: vacuumizing the composite hose, filling a thermosetting resin system, and uniformly pressing and rolling;
step three: cleaning and ventilating the old pipeline for drying;
step four: introducing the repair tube by using a turning method;
step five: replacing the hot air or hot water in the repair pipe to solidify the repair pipe;
step six: gradually replacing the hot air or hot water with cold air or cold water, and cooling and shaping the repair pipe under pressure.
Preferably, in the fourth step, the turning method is air turning or water turning.
Preferably, in step two, the thermosetting resin system includes, but is not limited to, unsaturated polyester system, vinyl ester resin system, epoxy resin system, polyurethane resin system, phenolic resin system, cyanate ester resin system.
The trenchless repair of the pressurized water supply pipeline requires that the material has no influence on the water body, the pipe can bear the internal and external pressure, and the construction is convenient. If the method of trenchless repair of the drainage pipe is directly transplanted to the water supply pipe for repair, the following problems exist:
1. the thermosetting pipe uses liquid resin, and the repaired pipe can have residual unreacted monomers, oligomers, diluents or other processing aids, which can pollute water quality;
2. the thermoplastic repair pipe is not well jointed with the old pipeline, the repair pipe becomes an independent pipe with a lining, and the performance of internal and external pressure resistance and the like cannot meet the use requirement;
3. the thermoplastic hose itself is not rigid or not rigid enough to withstand negative pressure and water hammer effects. Therefore, a pipe suitable for trenchless repair of a water supply pipeline needs to be designed.
The manufacturing process comprises the following steps:
1. adopting a co-extrusion process to manufacture a felt plastic-coated composite hose, wherein the co-extrusion middle layer is hot melt adhesive, and the outer layer is PE;
2. vacuumizing the composite hose, filling a thermosetting resin system, and uniformly pressing and rolling, wherein the thermosetting resin system comprises an unsaturated polyester system, a vinyl ester resin system, an epoxy resin system, a polyurethane resin system, a phenolic resin system, a cyanate ester resin system and the like.
The construction process comprises the following steps:
1. cleaning and ventilating the old pipeline for drying;
2. introducing a repair tube (air turning or water turning) by a turning method;
3. replacing the pipe with hot air or hot water to solidify the repair pipe;
4. gradually replacing the hot air or hot water with cold air or cold water, and cooling and shaping the repair pipe under pressure.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the content of the present invention within the scope of the protection of the present invention.
Claims (6)
1. The utility model provides a compound hose is used in restoration of running water pipe which characterized in that: comprises a thermosetting resin layer (3), a hot melt adhesive layer (2) and a thermoplastic polymer layer (1) which are arranged from outside to inside in sequence.
2. The composite hose for repairing a water pipe according to claim 1, wherein: the thermosetting resin layer (3) comprises an unsaturated polyester system, a vinyl ester resin system, an epoxy resin system, a polyurethane resin system, a phenolic resin system and a cyanate ester resin system.
3. The composite hose for repairing a water pipe according to claim 1, wherein: the thermoplastic polymer layer (1) is food grade.
4. The process for processing and constructing the composite hose for repairing the water pipe according to claim 1, comprising the steps of:
the method comprises the following steps: adopting a co-extrusion process to manufacture a felt plastic-coated composite hose, wherein the co-extrusion middle layer is hot melt adhesive, and the outer layer is PE;
step two: vacuumizing the composite hose, filling a thermosetting resin system, and uniformly pressing and rolling;
step three: cleaning and ventilating the old pipeline for drying;
step four: introducing the repair tube by using a turning method;
step five: replacing the hot air or hot water in the repair pipe to solidify the repair pipe;
step six: gradually replacing the hot air or hot water with cold air or cold water, and cooling and shaping the repair pipe under pressure.
5. The process for processing and constructing a composite hose for repairing a tap water pipe according to claim 4, wherein: in the fourth step, the turning method is air turning or water turning.
6. The composite hose for repairing a water pipe according to claim 4, wherein: in the second step, the thermosetting resin system includes, but is not limited to, an unsaturated polyester system, a vinyl ester resin system, an epoxy resin system, a polyurethane resin system, a phenolic resin system, and a cyanate ester resin system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111549792.4A CN114458842A (en) | 2021-12-17 | 2021-12-17 | Composite hose processing and construction process for repairing tap water pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111549792.4A CN114458842A (en) | 2021-12-17 | 2021-12-17 | Composite hose processing and construction process for repairing tap water pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114458842A true CN114458842A (en) | 2022-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111549792.4A Pending CN114458842A (en) | 2021-12-17 | 2021-12-17 | Composite hose processing and construction process for repairing tap water pipe |
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| CN (1) | CN114458842A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW467825B (en) * | 1996-11-21 | 2001-12-11 | Shonan Gosei Jushi Seisakusho | Tube lining and the manufacturing method therefor |
| CN105257948A (en) * | 2015-11-26 | 2016-01-20 | 上海管清环境技术有限公司 | Turnover type repair method for normal-temperature curing lining and turnover device for turnover type repair method |
| CN105802199A (en) * | 2016-04-14 | 2016-07-27 | 绍兴文理学院 | Composite material for repairing non-excavated pipeline and preparation method thereof |
| JP2019074099A (en) * | 2017-10-12 | 2019-05-16 | 株式会社栗本鐵工所 | Laminate for pipe regeneration and member for pipe regeneration |
-
2021
- 2021-12-17 CN CN202111549792.4A patent/CN114458842A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW467825B (en) * | 1996-11-21 | 2001-12-11 | Shonan Gosei Jushi Seisakusho | Tube lining and the manufacturing method therefor |
| CN105257948A (en) * | 2015-11-26 | 2016-01-20 | 上海管清环境技术有限公司 | Turnover type repair method for normal-temperature curing lining and turnover device for turnover type repair method |
| CN105802199A (en) * | 2016-04-14 | 2016-07-27 | 绍兴文理学院 | Composite material for repairing non-excavated pipeline and preparation method thereof |
| JP2019074099A (en) * | 2017-10-12 | 2019-05-16 | 株式会社栗本鐵工所 | Laminate for pipe regeneration and member for pipe regeneration |
Non-Patent Citations (6)
| Title |
|---|
| 何王善等: "现场翻转制管技术非开挖修复地下管道", 《建设科技》 * |
| 周永娜: "原位固化法（CIPP）软管浸渍树脂过程控制研究", 《四川建材》 * |
| 张文宁: "排水管道原位修复无纺布内衬软管制备与性能研究", 《中国优秀硕士学位论文全文数据库（电子期刊）》 * |
| 张淑洁等: "管道非开挖纺织内衬修复技术综述", 《现代纺织技术》 * |
| 祝君乔等: "小管径污水管CIPP翻转内衬修复实践", 《中国给水排水》 * |
| 罗欣等: "纺织品与塑料薄膜层压粘合研究", 《纺织学报》 * |
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Application publication date: 20220510 |
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