CN212273415U - Trenchless pipeline is restoreed and is used interior bushing pipe - Google Patents
Trenchless pipeline is restoreed and is used interior bushing pipe Download PDFInfo
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- CN212273415U CN212273415U CN202020562789.0U CN202020562789U CN212273415U CN 212273415 U CN212273415 U CN 212273415U CN 202020562789 U CN202020562789 U CN 202020562789U CN 212273415 U CN212273415 U CN 212273415U
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Abstract
The utility model relates to a lining pipe for trenchless pipeline repair, which belongs to the technical field of pipeline repair and comprises an outer layer, a reinforcing layer and an inner layer which are sequentially arranged from outside to inside, wherein the reinforcing layer is tubular, and the inner layer surrounds the inner surface of the reinforcing layer to form the inner wall of the lining pipe; the outer outside is provided with and meets water swellable layer. The utility model has the advantages that: the tightness of the connection between the lining pipe and the pipeline to be repaired can be enhanced, and the pipeline repairing effect is ensured.
Description
Technical Field
The utility model belongs to the technical field of the prosthetic technique of pipeline and specifically relates to a non-excavation pipeline is restoreed and is used interior bushing pipe is related to.
Background
Urban underground pipelines undertake the tasks of discharging rainwater, sewage and the like. Due to the wear, aging, corrosion and the like of the pipeline in the using process, the pipeline is likely to be damaged or leaked under the action of external force. The traditional method is to dig the ground, repair and replace the pipeline, and finally fill the pavement. The method has low construction efficiency and causes inconvenience to road surface traffic. In recent years, the trenchless pipeline repairing technology which is gradually popularized and used in China not only has high efficiency, but also has little influence on surrounding traffic, environment and other pipelines, and has obvious superiority compared with the traditional method. The non-excavation is a new construction technology for laying, replacing and repairing various underground pipelines by utilizing various rock-soil drilling equipment and technical means under the condition of excavating on a very small part of the earth surface (generally referred to as small-area excavation at an inlet and an outlet) in the modes of guiding, directional drilling and the like, does not obstruct traffic, does not damage green lands and vegetation, does not influence the normal life and work order of shops, hospitals, schools and residents, solves the problem that the traditional excavation construction interferes with the life of the residents, and damages and adverse effects on the traffic, environment and the foundation of surrounding buildings, and therefore has higher social and economic effects.
The trenchless pipeline repairing method includes various methods, such as a hose lining method, an overturning impregnation method, a CIPP pulling-in method and the like, wherein the CIPP pulling-in method is common, a lining hose with an anti-seepage film is adopted, the lining hose is fully impregnated by resin and pulled into a pipeline to be repaired from an inspection well, the hose is expanded to be round by using water pressure or air pressure, and a smooth and firm new pipe is formed after solidification, so that the aim of repairing is fulfilled. Chinese utility model patent with publication number CN205781677U discloses a flattening reinforced lining pipe for repairing non-excavation pipeline, flattening reinforced lining pipe for repairing non-excavation pipeline from inside to outside contain an inner layer, a reinforcing fiber layer and an outer layer in proper order, the inner layer be polyurethane or flexible PE and make, the outer layer be super wear-resisting PE and make.
The above prior art solutions have the following drawbacks: the connection between the outer layer and the pipeline to be repaired is not tight enough, so that the pipeline repairing effect is influenced, and urgent solution is needed.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, one of the purposes of the utility model is to provide a non-excavation pipeline is restoreed and is used interior bushing pipe, its advantage: the tightness of the connection between the lining pipe and the pipeline to be repaired can be enhanced, and the pipeline repairing effect is ensured.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the lining pipe for repairing the trenchless pipeline comprises an outer layer, a reinforcing layer and an inner layer which are sequentially arranged from outside to inside, wherein the reinforcing layer is tubular, and the inner layer surrounds the inner surface of the reinforcing layer to form the inner wall of the lining pipe; the outer outside is provided with and meets water swellable layer.
Through adopting above-mentioned technical scheme, when the staff carries out restoreing to the pipeline in using this interior bushing pipe, draw the pipeline in this interior bushing pipe, it rises the circle to recycle water pressure or atmospheric pressure with interior bushing pipe, form new pipe after ultraviolet irradiation solidification afterwards, when having the clearance between interior bushing pipe and the impaired former pipeline, the water of invasion, groundwater or pipeline sewage that get into in the space promptly can cause the spontaneous quick inflation of meeting water inflation layer, fill up the space, and form sealed isolation layer, make interior bushing pipe and former pipeline close fitting together, thereby effectively prevent the infiltration each other of groundwater and pipeline sewage, guarantee the prosthetic effect of pipeline.
The present invention may be further configured in a preferred embodiment as: the water-swelling layer is made of super absorbent resin and water-insoluble rubber.
By adopting the technical scheme, the Super Absorbent Polymer (SAP) has strong water absorption and expansion capacity and weaker mechanical property, and the water-insoluble rubber is used for enhancing the integral mechanical strength, so that the reliable sealing effect is achieved.
The present invention may be further configured in a preferred embodiment as: an outer protective layer is arranged between the outer layer and the water-swelling layer, and the outer protective layer is a compound polymerized by methyl methacrylate.
By adopting the technical scheme, the compound formed by polymerizing methyl methacrylate is a light-tight and flexible protective film, is used for reducing the abrasion to the reinforcing layer, has the functions of water resistance and light shading, prevents the reinforcing layer and the inner layer from being cured accidentally, and is convenient to store and transport.
The present invention may be further configured in a preferred embodiment as: the outer layer is made of high-density polyvinyl chloride with high elasticity.
By adopting the technical scheme, the high-density polyvinyl chloride has better waterproof performance and corrosion resistance, so that the possibility that water in the pipeline enters the reinforcing layer is reduced.
The present invention may be further configured in a preferred embodiment as: the reinforcing layer sequentially comprises a resin layer, a glass fiber fabric layer and a glass fiber felt layer from outside to inside.
Through adopting above-mentioned technical scheme, the use of mutually supporting of glass fiber fabric layer and glass fiber felt layer not only possesses high strength, high toughness, has good resin even permeability simultaneously, and the resin layer of being convenient for adheres to on the glass fiber fabric layer, can make the back up coat have even thickness and inner structure, has further improved the intensity of back up coat.
The present invention may be further configured in a preferred embodiment as: the resin layer is silicic acid resin.
By adopting the technical scheme, the cured silicate resin has high hardness, good toughness, strong impact resistance and bending resistance and strong corrosion resistance.
The present invention may be further configured in a preferred embodiment as: the inner layer is a mixture of glycol polyester and novolac epoxy resin.
By adopting the technical scheme, the mixture of the glycol polyester and the novolac epoxy resin has strong wear resistance and corrosion resistance, and is cured after being irradiated by ultraviolet rays, the cured glycol polyester and the novolac epoxy resin are attached to the reinforcing layer, a smooth protective layer is formed on the surface of the reinforcing layer, the effects of isolating and protecting the reinforcing layer are achieved, and the chemical corrosion resistance, the wear resistance and the water passing capacity are improved.
The present invention may be further configured in a preferred embodiment as: and the inner side wall of the inner layer is provided with a euphotic layer which is a euphotic soft film.
By adopting the technical scheme, the light-transmitting soft film can protect the mixture of the glycol polyester and the novolac epoxy resin before the mixture is cured by illumination, does not influence the curing by illumination of the mixture of the glycol polyester and the novolac epoxy resin, and can be torn off after the construction is finished.
To sum up, the utility model discloses a following beneficial technological effect:
1. the underground water or the pipeline sewage entering the gap can trigger the water-swelling layer to spontaneously and rapidly swell to fill the gap and form a sealing isolation layer, so that the lining pipe is tightly attached to the original pipeline, the mutual permeation of the underground water and the pipeline sewage is effectively prevented, and the pipeline repairing effect is ensured;
2. the compound formed by polymerizing the methyl methacrylate on the outer protective layer is a light-tight and flexible protective film, is used for reducing the abrasion to the reinforcing layer, has the functions of water resistance and light shielding, prevents the reinforcing layer and the inner layer from being cured accidentally, and is convenient to store and transport;
3. the glass fiber fabric layer and the glass fiber felt layer are matched with each other for use, so that the glass fiber fabric layer and the glass fiber felt layer have high strength and high toughness, and simultaneously have good resin uniform permeability, so that the resin layer is convenient to adhere to the glass fiber fabric layer, the reinforcing layer can have uniform thickness and an internal structure, and the strength of the reinforcing layer is further improved.
Drawings
Fig. 1 is a sectional view of the present invention.
In the figure, 1, a water-swellable layer; 2. an outer jacket; 3. an outer layer; 4. a reinforcement layer; 41. a resin layer; 42. a glass fiber fabric layer; 43. a glass fiber mat layer; 5. an inner layer; 6. a light transmitting layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a non-excavation pipeline is restoreed and is used interior bushing pipe, include that from outer to interior setting gradually be pipy meet water inflation layer 1, outer jacket 2, outer 3, back up coat 4, inlayer 5 and euphotic layer 6. Wherein, the inner layer 5 surrounds the inner surface of the reinforcing layer 4 to form the inner wall of the lining pipe, and the outer side of the water-swelling layer 1 is the surface of the lining pipe facing the inner wall of the damaged pipeline; the water-swellable layer 1 is formed by mixing or copolymerizing Super Absorbent Polymer (SAP) and common water-insoluble rubber, the common hydrophilic rubber has a weak structural performance, and loses water and shrinks to lose an expansion sealing function when subjected to conditions of salinity reduction, temperature change, drying of the surrounding environment and the like after water absorption, and the SAP has strong water absorption capacity although the mechanical performance is weak; the common water-insoluble rubber has strong mechanical property, so that the common water-insoluble rubber and the SAP are combined together to enhance the integral mechanical strength, thereby achieving the reliable sealing effect. When having the clearance between interior bushing pipe and the impaired former pipeline, the water of invasion, groundwater or pipeline sewage that get into in the space promptly can initiate and meet the spontaneous quick inflation of water inflation layer 1, fill up the space to form sealed isolation layer, make interior bushing pipe and former pipeline close fitting together, thereby effectively prevent the infiltration of groundwater and pipeline sewage, guarantee the prosthetic effect of pipeline.
The outer protective layer 2 is a compound polymerized by methyl methacrylate, and the compound polymerized by methyl methacrylate is a light-tight and flexible protective film, is used for reducing abrasion to the reinforcing layer 4, has the functions of water resistance and light shading, prevents the reinforcing layer 4 and the inner layer 5 from being cured accidentally, and is convenient to store and transport. The outer layer 3 is made of high-density polyvinyl chloride with high elasticity, and the high-density polyvinyl chloride has good waterproof performance and corrosion resistance, so that the possibility that water in the pipeline enters the reinforcing layer 4 is further reduced.
The reinforcing layer 4 includes a resin layer 41, a glass fiber fabric layer 42, and a glass fiber mat layer 43 in this order from the outside to the inside. The resin layer 41 is a silicate resin, and a cured silicate resin has high hardness, good toughness, strong impact resistance and bending resistance and strong corrosion resistance; the glass fiber fabric layer 42 and the glass fiber felt layer 43 are matched with each other for use, so that the glass fiber fabric layer 42 and the glass fiber felt layer 43 have high strength and high toughness, and simultaneously have good uniform resin permeability, the resin layer 41 can be conveniently attached to the glass fiber fabric layer 42, the reinforcing layer 4 can have uniform thickness and an internal structure, and the strength of the reinforcing layer 4 is further improved.
The inner layer 5 is a mixture of glycol polyester and novolac epoxy resin, the mixture of glycol polyester and novolac epoxy resin has strong wear resistance and corrosion resistance, the glycol polyester and novolac epoxy resin are cured after ultraviolet irradiation, the cured glycol polyester and novolac epoxy resin are attached to the reinforcing layer 4, a smooth protective layer is formed on the surface of the reinforcing layer 4, the effects of isolating and protecting the reinforcing layer 4 are achieved, and meanwhile, the chemical corrosion resistance, the wear resistance and the water passing capacity are improved. The inner side wall of the inner layer 5 is provided with a light transmission layer 6, the light transmission layer 6 is a light transmission soft film, the light transmission soft film can protect the mixture of the glycol polyester and the novolac epoxy resin before the mixture is cured by light, meanwhile, the light curing of the mixture of the glycol polyester and the novolac epoxy resin is not influenced, and the light transmission soft film can be torn off after the construction is finished.
The implementation principle of the embodiment is as follows: when a worker repairs a pipeline by using the lining pipe, the lining pipe is pulled into the pipeline, the lining pipe is expanded to be round by using water pressure or air pressure, a new pipe is formed after ultraviolet irradiation curing, and the euphotic layer 6 is torn off; at the moment, the underground water or pipeline sewage entering the gap can initiate the spontaneous rapid expansion of the water-swellable layer 1 to fill the gap and form a sealing isolation layer, so that the lining pipe and the original pipeline are tightly attached together; the outer protective layer 2 and the outer layer 3 play a role in protecting the reinforcing layer 4, so that the wear resistance and the corrosion resistance can be further enhanced; the glass fiber fabric layer 42 and the glass fiber felt layer 43 in the reinforcing layer 4 are mutually matched for use, the high strength and the high toughness are achieved, the resin layer 41 is convenient to adhere to the glass fiber fabric layer 42, the reinforcing layer 4 can have uniform thickness and an internal structure, the strength of the reinforcing layer 4 is further improved, after the inner layer 5 is solidified, a smooth protective layer can be formed on the inner surface of the reinforcing layer 4, the effects of isolation and protection of the reinforcing layer 4 are achieved, the chemical corrosion resistance and the water passing capacity are improved.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (6)
1. The utility model provides a non-excavation pipeline is restoreed and is used interior bushing pipe, includes outer layer (3), back up coat (4) and inlayer (5) that set gradually from outer to inner, its characterized in that: the reinforcing layer (4) is tubular, and the inner layer (5) surrounds the inner surface of the reinforcing layer (4) to form the inner wall of the lining pipe; the outside of outer layer (3) is provided with water-swellable layer (1).
2. The lining pipe for trenchless pipeline rehabilitation as claimed in claim 1, wherein: an outer protective layer (2) is arranged between the outer layer (3) and the water-swelling layer (1), and the outer protective layer (2) is a compound formed by polymerizing methyl methacrylate.
3. The lining pipe for trenchless pipeline rehabilitation as claimed in claim 1, wherein: the outer layer (3) is made of high-density polyvinyl chloride with high elasticity.
4. The lining pipe for trenchless pipeline rehabilitation as claimed in claim 1, wherein: the reinforcing layer (4) sequentially comprises a resin layer (41), a glass fiber fabric layer (42) and a glass fiber felt layer (43) from outside to inside.
5. The lining pipe for trenchless pipeline rehabilitation as claimed in claim 4, wherein: the resin layer (41) is a silicic acid resin.
6. The lining pipe for trenchless pipeline rehabilitation as claimed in claim 1, wherein: and a light transmission layer (6) is arranged on the inner side wall of the inner layer (5), and the light transmission layer (6) is a light transmission soft film.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020562789.0U CN212273415U (en) | 2020-04-15 | 2020-04-15 | Trenchless pipeline is restoreed and is used interior bushing pipe |
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| CN202020562789.0U CN212273415U (en) | 2020-04-15 | 2020-04-15 | Trenchless pipeline is restoreed and is used interior bushing pipe |
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| CN212273415U true CN212273415U (en) | 2021-01-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113063052A (en) * | 2021-03-17 | 2021-07-02 | 中核四平市政工程有限公司 | Pipeline lining grouting repair method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113063052A (en) * | 2021-03-17 | 2021-07-02 | 中核四平市政工程有限公司 | Pipeline lining grouting repair method |
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