Lining connecting device

Abstract

The utility model discloses a lining connecting device in the technical field of lining pipes, which comprises a first repair pipeline and a second repair pipeline which are in welded connection, a composite hose penetrates through the interiors of the first repair pipeline and the second repair pipeline, a supporting end is integrally formed at the end part of the second repair pipeline, and the supporting end is connected with the first repair pipeline. The composite hose extends out of the end of the second repair pipeline and is turned outwards to the surface of the supporting end. The supporting ends are connected with hose pressing caps for fastening the composite hose in an abutting mode, the hose pressing caps are fixedly connected with the second repairing pipeline through connecting assemblies, and a flow guide pipe is installed between the two sets of hose pressing caps. The problems that in the prior art, rapid operation in actual use is not facilitated, a pipe fitting with a hose lining is difficult to repair after being damaged, and the corrosion resistance and the sealing performance of the butt joint position after repair are poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of liner pipes, in particular to an liner connecting device. Background Art

[0002] The currently more widely used technology of adding composite hose lining inside pipelines is to make the composite soft lining pipe in advance, add adhesive (resin) inside the composite hose, and then pull it into the pipeline by flipping or pulling, and then use hot steam pressurization, hot water circulation heating, compressed air plus ultraviolet light machine and other technologies to solidify the adhesive on the composite lining pipe, so that the composite lining pipe in the pipeline is rounded or tightly attached to the inner wall of the pipeline, thus realizing the pipeline lining.

[0003] The existing installation and reinforcement method of the liner hose is rather complicated, which is not conducive to quick operation during actual use. In addition, the pipe fittings with the hose liner are difficult to repair after being damaged, and the corrosion resistance and sealing of the joints after repair are also relatively poor. Therefore, the technical personnel in this field provide a liner connection device to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a liner connecting device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a liner connection device, comprising a first repair pipeline and a second repair pipeline connected by welding, a composite hose running through the interior of the first repair pipeline and the second repair pipeline, a support end head integrally formed at the end of the second repair pipeline, the composite hose extending from the end of the second repair pipeline and turned outward to the surface of the support end head;

[0006] The support end is abutted with a hose cap for fastening the composite hose, and the hose cap is fixedly connected to the second repair pipeline through a connecting component. A flow guide pipe is installed between the two groups of hose caps, and a sealing component is installed on the outer rings of the two groups of second repair pipelines to seal the connection structure therebetween.

[0007] Preferably: the end of the hose pressure cap away from the second repair pipeline is bonded with a gasket, the side of the gasket away from the hose pressure cap is bonded with a connecting chuck, and the guide tube buckle is installed between two sets of opposite connecting chucks.

[0008] Preferably: the end of the hose pressure cap away from the second repair pipeline is bonded with a gasket, the side of the gasket away from the hose pressure cap is bonded with a connecting chuck, and the guide tube buckle is installed between two sets of opposite connecting chucks.

[0009] Preferably, the sealing assembly comprises butt-jointed pipes welded to two sets of concentric reducers of the outer ring of the second repair pipeline, a straight pipe is welded and connected between the two sets of butt-jointed pipes, and a plug is installed on the straight pipe.

[0010] Preferably, the sealing assembly comprises butt-jointed pipes welded to two sets of concentric reducers of the outer ring of the second repair pipeline, a straight pipe is welded and connected between the two sets of butt-jointed pipes, and a plug is installed on the straight pipe.

[0011] Preferably: the outer circle of the polished weld at the joint between the first repair pipeline and the second repair pipeline is coated with four layers of curing glue and wrapped with three layers of fiberglass cloth, and the innermost circle close to the weld and the outermost circle far from the weld are both cured glue.

[0012] Preferably, the outer ring buckle of the glass fiber cloth is installed with two groups of corresponding reinforcement cards, and the two groups of reinforcement cards are provided with through holes for bolt installation.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, the connection and installation structure is simple, and the connection between the composite hose and the end of the second repair pipeline is more sealed and reliable, which can effectively reduce the difficulty of work and improve the work efficiency of operators. In addition, the corrosion resistance and sealing performance of the reinforced structure are strong, the service life of the reinforced structure is longer, and the economic benefits are more significant. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the connection between the first repair pipeline and the second repair pipeline structure of the utility model.

[0017] In the figure: 1. First repair pipeline; 2. Second repair pipeline; 3. Composite hose; 4. Support end; 5. Hose pressure cap; 6. Flow guide tube; 7. Gasket; 8. Connecting chuck; 9. Bolt reinforcement plate; 10. Fastening bolt; 11. Butt tube; 12. Straight pipe; 13. Plug; 14. Curing glue; 15. Fiberglass cloth; 16. Reinforcement card; 17. Perforation. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-2 In an embodiment of the utility model, a liner connection device includes a first repair pipeline 1 and a second repair pipeline 2 connected by welding, a composite hose 3 passes through the interior of the first repair pipeline 1 and the second repair pipeline 2, a support end 4 is integrally formed at the end of the second repair pipeline 2, the composite hose 3 extends from the end of the second repair pipeline 2 and turns outward to the surface of the support end 4, a hose pressure cap 5 for fastening the composite hose 3 is abutted and connected to the support end 4, the hose pressure cap 5 is fixedly connected to the second repair pipeline 2 through a connecting assembly, a guide pipe 6 is installed between the two groups of hose pressure caps 5, and a sealing assembly for sealing the connection structure between the two groups of second repair pipelines 2 is installed on the outer rings of the two groups of second repair pipelines 2.

[0020] When a pipe fitting with an inner lined hose is damaged and needs to be repaired, the length required to install the repair component is cut on the first repair pipeline 1, and the second repair pipelines 2 are welded to the cuts on both sides of the first repair pipeline 1. The end of the composite hose 3 inside the first repair pipeline 1 is turned outward to the support end 4, and the hose pressure cap 5 is fixed to the support end 4 using a connecting assembly. After the two sets of hose pressure caps 5 are installed, the guide pipe 6 is installed between the two, and then the sealing assembly is used to seal and protect the connection structure between the two sets of second repair pipelines 2 from corrosion.

[0021] Furthermore, a gasket 7 is bonded to one end of the hose pressure cap 5 away from the second repair pipeline 2, and a connecting chuck 8 is bonded to one side of the gasket 7 away from the hose pressure cap 5. The guide tube 6 is snap-fitted and installed between two sets of opposite connecting chucks 8, which can facilitate the installation of the guide tube 6, and the gasket 7 can improve the sealing between the connecting components.

[0022] In one embodiment, specifically, the connecting assembly includes a bolt reinforcement plate 9 fixedly installed on the outer ring of the second repair pipeline 2, and the hose pressure cap 5 and the bolt reinforcement plate 9 are fixedly connected by multiple groups of fastening bolts 10 passing through the two. After the hose pressure cap 5 is snapped onto the support end 4, the multiple groups of fastening bolts 10 are used to pass through the hose pressure cap 5 and then through the bolt reinforcement plate 9 and then locked, which can facilitate the installation of the hose pressure cap 5.

[0023] Among them, the sealing component includes a butt-joint pipe 11 welded on the outer circle of two groups of second repair pipelines 2 with concentric reducers, a straight pipe 12 is welded and connected between the two groups of butt-joint pipes 11, and a plug 13 is installed on the straight pipe 12. The components between the two groups of second repair pipelines 2 are all installed, and the straight pipe 12 is welded and connected between the two groups of butt-joint pipes 11. Cement is poured from the plug 13 into the inside of the straight pipe 12 and the butt-joint pipe 11. The cement can fix the guide pipe 6 and also play a role in sealing and anti-corrosion in the pipeline. The butt-joint pipe 11 with concentric reducers is prefabricated on the second repair pipeline 2, so that the hose will not be scalded when welding the straight pipe 12 section. The lining hose is to prevent the pipeline from continuing to corrode and protect the repaired pipeline. It has the functions of acid, alkali and wax resistance. The guide pipe 6 allows the medium in the pipe to pass normally. The straight pipe 12 is welded well to play a secondary protection role.

[0024] After the repaired composite hose 3 is turned over, it can be divided into six equal parts and turned outward onto the outer wall of the supporting end 4, and pressed with the hose pressure cap 5. The hose pressure cap 5 is tightened by fastening the bolts 10 to tightly lock the composite hose 3 to prevent the hose from being flushed and falling off by the medium. The fiberglass lining layer of the composite hose 3 is continuous and complete, and the service life of the repaired pipeline can be extended by more than 20 years. The composite hose 3 has outstanding acid and alkali resistance, wax resistance, and scaling resistance (better for pipelines conveying polymers), which solves the anti-corrosion problem at one time and reduces the pipeline operating cost. The hose reinforcer can be welded after the main pipeline is cleaned.

[0025] In one embodiment, the outer ring of the weld joint after being polished at the joint of the first repair pipeline 1 and the second repair pipeline 2 is provided with multiple layers of curing glue 14 and glass fiber cloth 15, and the multiple layers of curing glue 14 and glass fiber cloth 15 are arranged alternately. The outer ring of the weld joint after being polished at the joint of the first repair pipeline 1 and the second repair pipeline 2 is coated with four layers of curing glue 14 and wrapped with three layers of glass fiber cloth 15. The innermost ring outside the weld joint close to the weld joint and the outermost ring far from the weld joint are both curing glue 14, and the outer ring of the curing glue 14 is wrapped with multiple layers of glass fiber cloth 15. Furthermore, the glass fiber The outer ring buckle of the cloth 15 is installed with two groups of corresponding reinforcement cards 16, and both groups of reinforcement cards 16 are provided with through holes 17 for bolt installation. The two sides of the weld are polished, and no oil, grease, residual oxide scale, rust, and residual paint should be visible on the surface after polishing. The level is Sa1. After the two sides of the weld are polished, the curing glue 14 is brushed to the pipe wall and then wrapped with glass fiber cloth 15, and then the curing glue 14 is brushed again. The cycle is to three cloths and four glues. After wrapping, the external reinforcement card 16 is clamped and the bolts that penetrate the through holes 17 to lock the two groups of reinforcement cards 16 are tightened.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A liner connection device, characterized in that: The invention comprises a first repair pipeline (1) and a second repair pipeline (2) connected by welding, wherein a composite hose (3) runs through the interior of the first repair pipeline (1) and the second repair pipeline (2), a support end head (4) is integrally formed at the end of the second repair pipeline (2), and the composite hose (3) extends from the end of the second repair pipeline (2) and turns outward to the surface of the support end head (4); A hose pressure cap (5) for tightening the composite hose (3) is abutted against the support end (4); the hose pressure cap (5) is fixedly connected to the second repair pipeline (2) via a connecting assembly; a flow guide tube (6) is installed between the two sets of hose pressure caps (5); and a sealing assembly for sealing the connection structure between the two sets of second repair pipelines (2) is installed on the outer rings of the two sets of second repair pipelines (2).

2. A liner connection device according to claim 1, characterized in that: The end of the hose pressure cap (5) away from the second repair pipeline (2) is bonded to a gasket (7), and the side of the gasket (7) away from the hose pressure cap (5) is bonded to a connecting chuck (8), and the guide tube (6) is buckled and installed between two sets of opposite connecting chucks (8).

3. A liner connection device according to claim 1, characterized in that: The connection assembly comprises a bolt reinforcement plate (9) fixedly mounted on the outer ring of the second repair pipeline (2), and the hose pressure cap (5) and the bolt reinforcement plate (9) are fixedly connected by a plurality of sets of fastening bolts (10) penetrating the two.

4. A liner connection device according to claim 1, characterized in that: The sealing assembly comprises a butt-joint pipe (11) welded to the outer ring of two sets of concentric reducing heads of the second repair pipeline (2), a straight pipe (12) is welded between the two sets of butt-joint pipes (11), and a plug (13) is installed on the straight pipe (12).

5. A liner connection device according to claim 1, characterized in that: The outer ring of the polished weld joint at the joint of the first repair pipeline (1) and the second repair pipeline (2) is provided with multiple layers of curing glue (14) and glass fiber cloth (15), and the multiple layers of curing glue (14) and glass fiber cloth (15) are arranged in an alternating manner.

6. A liner connection device according to claim 5, characterized in that: The outer ring of the polished weld joint at the joint between the first repair pipeline (1) and the second repair pipeline (2) is coated with four layers of curing glue (14) and wrapped with three layers of glass fiber cloth (15), and the innermost ring close to the weld joint and the outermost ring far from the weld joint are both made of curing glue (14).

7. A liner connection device according to claim 6, characterized in that: The outer ring buckle of the glass fiber cloth (15) is mounted with two groups of corresponding reinforcement clips (16), and both groups of reinforcement clips (16) are provided with through holes (17) for bolt installation.

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