CN213871592U

CN213871592U - Non-excavation pipeline connection structure

Info

Publication number: CN213871592U
Application number: CN202022677441.9U
Authority: CN
Inventors: 梅杰
Original assignee: Chongqing Senqing Municipal Engineering Co ltd
Current assignee: Chongqing Senqing Municipal Engineering Co ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-08-03
Anticipated expiration: 2030-11-18

Abstract

The application relates to the technical field of municipal maintenance engineering, in particular to a non-excavation pipeline connecting structure, the device comprises a lining hose and a joint arranged between the lining hose and an original pipeline, wherein the joint comprises a top pipe, a sleeve pipe and an expansion pipe, one end of the top pipe is fixed on the original pipeline, the sleeve pipe is in splicing fit with the other end of the top pipe, the expansion pipe is arranged between the outer wall of the top pipe and the inner wall of the sleeve pipe, the lining hose is clamped and fixed with the inner wall of the sleeve pipe through the outer wall of the expansion pipe, one end of the top pipe, far away from the original pipeline, is provided with a clamping pipe which is abutted against the top pipe, the clamping pipe is sleeved on the lining hose, and the end of the clamping pipe close to the jacking pipe is in splicing fit with the casing pipe, the end of the clamping pipe far away from the jacking pipe and the end of the casing pipe far away from the original pipeline are both provided with clamping flanges, the middle part of the jacking pipe and the end of the casing pipe close to the original pipeline are both provided with connecting flanges, and the clamping flanges and the connecting flanges are connected through screw connectors. The lining hose has the advantages that the lining hose and the joint are high in connection strength, and the lining hose is not easy to separate from the joint.

Description

Non-excavation pipeline connection structure

Technical Field

The application relates to municipal maintenance engineering technical field especially relates to a non-excavation pipeline connection structure.

Background

With the progress of urbanization, urban underground pipelines are complicated and complicated, and the load of urban roads is more and more serious, so that a great amount of technical problems exist in the process of repairing the underground pipelines. The trenchless repairing technology for urban drainage pipelines is more and more favored by the management department of the underground pipeline industry because the trenchless repairing technology does not influence the traffic after the urban drainage pipelines, has high pipe laying speed, high efficiency and no environmental damage, and does not influence the normal work and life of people. When the trenchless pipeline is repaired, a specially-made lining hose is usually adopted for facilitating transportation and carrying, and the lining hose is connected with an original pipeline to be repaired through a connector.

Chinese patent application No. CN201510623877.0 discloses a top expansion type joint, the flange sleeve comprises a cylindrical flange sleeve, the head of the flange sleeve is provided with a first annular flange ring disc, the tail of the flange sleeve is provided with a second annular flange ring disc, the outer side of the second flange ring disc is provided with a first annular sealing ring groove, the expansion pipe comprises a cylindrical expansion joint cylinder, the top of the expansion joint cylinder is provided with an annular expansion joint snap ring, the size of the expansion joint cylinder is larger than the expansion joint snap ring, the bottom of the expansion joint cylinder is provided with an expansion joint flanging, the outer wall of the expansion joint cylinder is provided with an anti-skidding odontoid array consisting of anti-skidding odontoids, the jacking pipe comprises a cylindrical jacking pipe main body, the tail of the jacking pipe main body is provided with a jacking pipe flanging, and a sealing ring is arranged in the first sealing ring groove.

In view of the above-mentioned related technologies, the inventor believes that the pressure inside the transportation pipeline similar to a drinking water pipe is high, and if the connection strength between the lining hose and the joint is low, the lining hose and the joint are easily separated, so that the transported substance in the transportation pipeline leaks.

SUMMERY OF THE UTILITY MODEL

In order to improve the joint strength between lining hose and the joint, this application provides a non-excavation pipeline connection structure.

The application provides a non-excavation pipeline connection structure adopts following technical scheme:

the utility model provides a non-excavation pipeline connection structure, includes the inside lining hose and establishes the joint between inside lining hose and former pipeline, the joint includes that one end is fixed at the push pipe on former pipeline, pegs graft complex sleeve pipe and establishes the expand tube between the outer wall of push pipe and sheathed tube inner wall with the push pipe other end, the outside wall that the inside lining hose passes through the expand tube is fixed with sheathed tube inner wall centre gripping, the one end that former pipeline was kept away from to the push pipe is equipped with the double-layered pipe with push pipe looks butt, press from both sides the pipe box and establish on the inside lining hose, and press from both sides the one end that the pipe is close to the push pipe and peg graft the cooperation with the sleeve pipe, the one end that former pipeline was kept away from to the one end that the pipe was kept away from to the double-layered pipe and sleeve pipe all is equipped with and presss from both sides tight flange, the middle part of push pipe and the one end that the sleeve pipe is close to former pipeline all are equipped with flange, press from both sides between the tight flange and link to each other through the spiro union piece between the flange.

By adopting the technical scheme, the lining hose is clamped and fixed between the outer wall of the expansion pipe and the inner wall of the sleeve by the expansion pipe, and the lining hose is not easy to separate from the joint; and the lining hose is further clamped by the clamping pipe and the jacking pipe, and the connection between the lining hose and the joint is more stable.

Optionally, one end of the top pipe, which is far away from the original pipeline, extends out of the expansion pipe, an outer chamfer is arranged on the outer wall of the end part of the top pipe, and an inner chamfer matched with the outer chamfer is arranged on the inner wall of one end, which is close to the top pipe, of the clamping pipe.

Through adopting above-mentioned technical scheme, outer chamfer and interior chamfer make the transition of inside lining hose in the butt department of push pipe and double-layered pipe smoother to avoid inside lining hose to receive abnormal extrusion and produce the fold, and then make inside lining hose be difficult for impairedly.

Optionally, the lining hose is sleeved with a conical ring gasket at the abutting position of the top pipe and the clamping pipe, and the conical ring gasket is clamped and fixed by the chamfer surface of the outer chamfer and the chamfer surface of the inner chamfer.

By adopting the technical scheme, the conical ring cushion enhances the clamping and fixing effects of the jacking pipe and the clamping pipe on the lining hose on one hand; on the other hand, the conical ring gasket enhances the sealing effect of the abutting part of the top pipe and the clamping pipe, so that the conveyed materials in the pipeline are not easy to leak.

Optionally, the section of the conical ring pad is wavy, and a gap for breaking the conical ring pad is formed in the side wall of the conical ring pad.

By adopting the technical scheme, the wavy conical ring cushion is extruded and gradually deformed, so that the clamping effect of the jacking pipe and the clamping pipe on the lining hose is further enhanced.

Optionally, the outer wall of the expansion pipe is provided with anti-slip teeth.

Through adopting above-mentioned technical scheme, the frictional resistance between inside lining hose and the expand tube has been strengthened to the antiskid tooth to make difficult production separation between inside lining hose and the expand tube, further strengthened the steadiness of being connected between inside lining hose and the joint.

Optionally, the one end that the expand tube is close to former pipeline is equipped with the outer loop and follows, the sleeve pipe is close to the one end of former pipeline and is equipped with the annular that is used for the outer loop along the scarf joint.

Through adopting above-mentioned technical scheme, the outer loop is along forming spacingly in the embedding annular to when avoiding the push pipe to push up into the expand tube, the expand tube takes place axial drunkenness and causes the push pipe to fail to push up completely in the expand tube and can't make the expand tube stabilize effectual centre gripping to the inside lining hose.

Optionally, a sealing ring gasket is arranged between the connecting flanges.

By adopting the technical scheme, the sealing effect at the connecting flange is improved, so that conveyed objects in the pipeline are not easy to leak.

Optionally, the lining hose includes an inner protection layer, a reinforcement layer and an outer protection layer which are sequentially arranged along an axial line of the lining hose.

By adopting the technical scheme, the lining hose has good repairing effect due to the comprehensive effect of each layer of structure, so that the formed pipeline connecting structure has excellent pressure resistance and sealing property.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the expansion pipe is matched with the sleeve pipe, the clamping pipe is matched with the jacking pipe, and the expansion pipe and the jacking pipe have comprehensive effects, so that the lining hose is not easy to separate from the joint, and the lining hose is more stably connected with the joint;

2. by arranging the conical ring pad, on one hand, the clamping and fixing effects of the top pipe and the clamping pipe on the lining hose are enhanced; on the other hand, the sealing effect of the abutting part of the top pipe and the clamping pipe is enhanced, so that the transported substance in the pipeline is not easy to leak.

Drawings

Fig. 1 is a schematic structural view of the whole trenchless pipeline connecting structure in the embodiment of the present application;

FIG. 2 is a schematic view showing the structure of a lining hose according to an embodiment of the present invention;

figure 3 is a cross-sectional view of a trenchless pipe connection of an embodiment of the present application;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a schematic diagram of a conical ring pad according to an embodiment of the present application.

Description of reference numerals: 1. a lining hose; 11. an inner protective layer; 12. an enhancement layer; 13. an outer protective layer; 2. a joint; 21. jacking pipes; 22. a sleeve; 23. expanding the tube; 231. anti-slip teeth; 232. an outer annular rim; 233. chamfering the outer part; 24. clamping the pipe; 241. inner chamfering; 3. original pipeline; 4. a connecting flange; 5. a screw member; 51. a bolt; 52. a nut; 6. a sealing ring gasket; 7. clamping the flange; 8. a conical ring pad; 81. and (4) a notch.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses non-excavation pipeline connection structure. Referring to fig. 1, the trenchless pipe connecting structure includes a lining hose 1 and a joint 2. The lining hose 1 is used as a rehabilitating pipe for the original pipe 3, and the lining hose 1 is usually provided between two pieces of the original pipe 3 to be rehabilitated. The two ends of the lining hose 1 are connected with the original pipeline 3 through the joints 2, namely the joints 2 are arranged between the lining hose 1 and the original pipeline 3.

Referring to fig. 2, the lining hose 1 includes an inner protection layer 11, a reinforcement layer 12 and an outer protection layer 13 which are sequentially arranged along the axial lead of the lining hose 1, and the structures of the lining hose 1 are fixedly connected with each other. The material of the inner protection layer 11 is reasonably selected according to the actual transported substance of the original pipeline 3, for example, the original pipeline 3 is an oil pipeline, and the inner protection layer 11 is preferably made of oil-resistant and heat-resistant material; the original pipeline 3 is a natural gas pipe, and the inner protective layer 11 is preferably made of high-air-tightness material; the original pipeline 3 is a tap water pipe, and the inner protective layer 11 is made of polyethylene material with drinking water grade preferentially. The reinforcing layer 12 is used for enhancing the compressive strength and toughness of the lining hose 1, and the material of the reinforcing layer 12 is preferably high-strength polyester fiber or aramid fiber. The outer protective layer 13 is used for the outer protection of the lining hose 1, and therefore the outer protective layer 13 is preferably made of super wear-resistant modified material. Each layer structure combined action for inside lining hose 1 has good repair effect, thereby makes the pipeline connection structure who forms have excellent resistance to pressure and leakproofness.

Referring to fig. 1 and 3, the joint 2 includes a top pipe 21, a sleeve 22, and an expansion pipe 23. The top pipe 21 is fixed on the original pipeline 3, and the top pipe 21 and the original pipeline 3 can be welded and fixed or fixed through a flange. The sleeve 22 is in insertion fit with the other end of the top pipe 21, and the inner diameter of the sleeve 22 is larger than the outer diameter of the top pipe 21. The expansion pipe 23 is arranged between the outer wall of the top pipe 21 and the outer wall of the sleeve 22, and the expansion pipe 23 is in interference fit with the top pipe 21. A gap for installing the lining hose 1 is reserved between the outer wall of the expansion pipe 23 and the inner wall of the sleeve 22, and the lining hose 1 is clamped and fixed through the outer wall of the expansion pipe 23 and the inner wall of the sleeve 22. The top pipe 21, the sleeve 22 and the expansion pipe 23 are preferably pipe bodies made of carbon steel material.

During construction, the lining hose 1 penetrates through the sleeve 22 and is sleeved on the outer wall of the expansion pipe 23, then the lining hose 1 is placed into the sleeve 22, the jacking pipe 21 is jacked into the expansion pipe 23 through auxiliary tools such as a jack, the jacking pipe 21 is in interference fit with the expansion pipe 23, the expansion pipe 23 is expanded by the jacking pipe 21, the outer diameter of the expansion pipe slightly increases, and therefore the lining hose 1 is clamped and fixed between the outer wall of the expansion pipe 23 and the inner wall of the sleeve 22. The expanding pipe 23 can not only protect the lining hose 1 from being damaged when the jacking pipe 21 is jacked, but also play a role in sealing.

Referring to fig. 4, the outer wall of the expansion tube 23 is provided with anti-slip teeth 231. The direction of the tooth point on the anti-skid tooth 231 is opposite to the jacking direction of the top pipe 21, so that the tooth point is not easy to puncture the lining hose 1 when the top pipe 21 is jacked into the expanding pipe 23. The anti-slip teeth 231 enhance the frictional resistance between the lining hose 1 and the expansion pipe 23, so that the lining hose 1 and the expansion pipe 23 are not easy to separate, and the connection stability between the lining hose 1 and the joint 2 is further enhanced.

Referring to fig. 3, an outer ring edge 232 is arranged at one end of the expansion pipe 23 close to the original pipeline 3, and the outer ring edge 232 is formed by folding the side wall of the expansion pipe 23 close to one end of the original pipeline 3 in the direction far away from the axial lead of the expansion pipe 23. One end of the sleeve 22 close to the original pipeline 3 is provided with a ring groove for the scarf joint of the outer ring edge 232, and the ring groove is positioned on one side of the inner wall of the sleeve 22. When the expanding tube 23 is placed into the sleeve 22, the outer ring edge 232 is embedded into the ring groove to form a limiting position, so that when the top tube 21 is pushed into the expanding tube 23, the expanding tube 23 axially moves to cause that the top tube 21 cannot be completely pushed into the expanding tube 23, and the expanding tube 23 cannot firmly and effectively clamp the lining hose 1.

In order to ensure that the top pipe 21 is not easy to separate from the expanding pipe 23 after being pushed into the expanding pipe 23, the middle part of the top pipe 21 and one end of the sleeve 22 close to the original pipeline 3 are both provided with a connecting flange 4, and the connecting flange 4 and the top pipe 21 or the sleeve 22 are both of an integrated structure. The connecting flanges 4 are connected through screw connectors 5. The screw connector 5 is preferably a high-strength corrosion-resistant bolt 51 and a nut 52, and the bolt 51 penetrates through the two connecting flanges 4 to be in threaded connection with the nut 52, so that the two connecting flanges 4 are locked and fixed, and the connection effect of the lining hose 1 and the joint 2 is further ensured. In order to improve the sealing effect at the connecting flanges 4 and ensure that conveyed objects in the pipeline are not easy to leak, sealing ring gaskets 6 are arranged between the connecting flanges 4, and the sealing ring gaskets 6 are preferably corrosion-resistant composite rubber sealing rings.

One end of the top pipe 21, which is far away from the original pipeline 3, is provided with a clamping pipe 24 which is abutted against the top pipe 21, the clamping pipe 24 is sleeved on the lining hose 1, namely, at the abutting position of the top pipe 21 and the clamping pipe 24, the side wall of the lining hose 1 is positioned between two end faces of the top pipe 21 and the clamping pipe 24, which are close to each other, the lining hose 1 is further clamped and fixed through the top pipe 21 and the clamping pipe 24, and the lining sleeve 22 is more difficult to separate from the joint 2. In order to maintain a stable clamping effect, one end of the clamping pipe 24 close to the top pipe 21 is in inserted fit with the sleeve 22; and, the end of the clamping pipe 24 far away from the top pipe 21 and the end of the sleeve 22 far away from the original pipeline 3 are both provided with a clamping flange 7, and the clamping flange 7 and the clamping pipe 24 or the sleeve 22 are both of an integral structure. The fastening between the clamping flanges 7 is effected in the same way as between the connecting flanges 4.

One end of the top pipe 21, which is far away from the original pipeline 3, extends out of the expansion pipe 23 and is provided with an outer chamfer 233 on the outer wall of the end part, so that one end of the top pipe 21, which is far away from the original pipeline 3, is conical, and the inner wall of one end of the clamping pipe 24, which is close to the top pipe 21, is provided with an inner chamfer 241 matched with the outer chamfer 233. Outer chamfer 233 and interior chamfer 241 make the transition of inside lining hose 1 in the butt department of push pipe 21 and double-layered pipe 24 more smooth to avoid inside lining hose 1 to receive improper extrusion and produce the fold, and then make inside lining hose 1 difficult impaired.

The lining hose 1 is sleeved with a conical ring gasket 8 at the abutting part of the top pipe 21 and the clamping pipe 24. The conical ring gasket 8 is preferably a stainless steel metal gasket, and the shape of the conical ring gasket 8 is similar to that of the end of the top pipe 21 far away from the original pipeline 3. The conical ring gasket 8 is clamped and fixed by the chamfer surface of the outer chamfer 233 and the chamfer surface of the inner chamfer 241. The conical ring cushion 8 enhances the clamping and fixing effects of the top pipe 21 and the clamping pipe 24 on the lining hose 1 on one hand; on the other hand, the conical ring gasket 8 enhances the sealing effect at the joint of the top pipe 21 and the clamping pipe 24, so that the transported substance in the pipeline is not easy to leak.

Referring to fig. 5, the cross section of the conical ring pad 8 is wavy, so that the side wall of the conical ring pad 8 is concave-convex, and when the conical ring pad 8 is clamped and fixed by the top pipe 21 and the clamp pipe 24, the wavy conical ring pad 8 is squeezed and gradually deformed, and the clamping action of the top pipe 21 and the clamp pipe 24 on the lining hose 1 is further enhanced. In order to facilitate the deformation of the conical ring pad 8, the side wall of the conical ring pad 8 is provided with a notch 81 for breaking the conical ring pad 8.

The implementation principle of the trenchless pipeline connecting structure in the embodiment of the application is as follows: during construction, the lining hose 1 sequentially penetrates through the clamping pipe 24, the conical ring pad 8 and the sleeve 22, the lining hose 1 is sleeved on the outer wall of the expansion pipe 23, the expansion pipe 23 is placed into the sleeve 22, the outer ring edge 232 is embedded into the annular groove to form limiting, the sealing ring pad 6 is sleeved on the top pipe 21, the top pipe 21 is pushed into the expansion pipe 23, the expansion pipe 23 is deformed to increase the outer diameter of the expansion pipe, the lining hose 1 is clamped and fixed between the outer wall of the expansion pipe 23 and the inner wall of the sleeve 22 by the expansion pipe 23, the sealing ring pad 6 is clamped by the two connecting flanges 4, the two connecting flanges 4 are fixed by the screw connector 5, the conical ring pad 8 and the clamping pipe 24 are sequentially placed into the sleeve 22, the conical ring pad 8 is clamped and fixed by the clamping pipe 24 and the sleeve 21, and the clamping flange 7 is locked by the screw connector 5. The lining hose 1 is not easy to separate from the joint 2 due to the clamping effect of the clamping pipe 24 and the jacking pipe 21, the conical ring gasket 8 is extruded and deformed when the clamping flange 7 is locked and fastened, and the lining hose 1 is more stably connected with the joint 2.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a non-excavation pipeline connection structure, includes lining hose (1) and establishes joint (2) between lining hose (1) and former pipeline (3), joint (2) include that one end is fixed push pipe (21) on former pipeline (3), with push pipe (21) other end grafting complex sleeve pipe (22) and establish expand tube (23) between the outer wall of push pipe (21) and the inner wall of sleeve pipe (22), lining hose (1) is fixed through the outer wall of expand tube (23) and the inner wall centre gripping of sleeve pipe (22), its characterized in that: one end of the jacking pipe (21) far away from the original pipeline (3) is provided with a clamping pipe (24) which is connected with the jacking pipe (21) in an abutting mode, the clamping pipe (24) is sleeved on the lining hose (1), one end of the clamping pipe (24) close to the jacking pipe (21) is in inserting and connecting cooperation with the sleeve (22), one end of the clamping pipe (24) far away from the jacking pipe (21) and one end of the sleeve (22) far away from the original pipeline (3) are both provided with a clamping flange (7), the middle of the jacking pipe (21) and one end of the sleeve (22) close to the original pipeline (3) are both provided with a connecting flange (4), and the clamping flanges (7) and the connecting flange (4) are connected through a screw connector (5).

2. The trenchless pipe connection structure of claim 1, wherein: one end, far away from the original pipeline (3), of the top pipe (21) extends out of the expansion pipe (23) and is provided with an outer chamfer (233) on the outer wall of the end part, and the inner wall, close to one end of the top pipe (21), of the clamping pipe (24) is provided with an inner chamfer (241) matched with the outer chamfer (233).

3. The trenchless pipe connection structure of claim 2, wherein: the lining hose (1) is sleeved with a conical ring gasket (8) at the abutting position of the top pipe (21) and the clamping pipe (24), and the conical ring gasket (8) is clamped and fixed through the chamfer surface of the outer chamfer (233) and the chamfer surface of the inner chamfer (241).

4. A trenchless pipe connecting structure as claimed in claim 3 wherein: the section of the conical ring pad (8) is wavy, and a gap (81) for disconnecting the conical ring pad (8) is formed in the side wall of the conical ring pad (8).

5. The trenchless pipe connection structure of claim 1, wherein: and anti-skidding teeth (231) are arranged on the outer wall of the expansion pipe (23).

6. The trenchless pipe connection structure of claim 1, wherein: one end that expand tube (23) are close to former pipeline (3) is equipped with outer loop along (232), the one end that sleeve pipe (22) are close to former pipeline (3) is equipped with the annular that is used for outer loop along (232) scarf joint.

7. The trenchless pipe connection structure of claim 1, wherein: and a sealing ring gasket (6) is arranged between the connecting flanges (4).

8. The trenchless pipe connection structure of claim 1, wherein: the lining hose (1) comprises an inner protective layer (11), a reinforcing layer (12) and an outer protective layer (13) which are sequentially arranged along the axial lead of the lining hose (1) outwards.