CN211599920U

CN211599920U - Interior bushing pipe attach fitting

Info

Publication number: CN211599920U
Application number: CN201922296744.3U
Authority: CN
Inventors: 高志涛
Original assignee: Tianjin Energy Solution Technology Co ltd
Current assignee: Tianjin Energy Solution Technology Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-09-29
Anticipated expiration: 2029-12-19

Abstract

The utility model relates to a lining pipe connecting joint, which comprises a jacking ring, an outer sleeve, a packing ring, a pressure plate flange and a joint core; a boss is arranged on the jacking ring; the convex part of the boss is arranged in the outer sleeve; more than 2 groups of packing rings are axially arranged in the outer sleeve, and the outer ring of the pressure plate flange is provided with a threaded hole; the outer wall of the joint core is provided with an annular groove; the jacking ring, the outer sleeve and the pressure plate flange are positioned on the outer side of the lining hose and are connected with the lining hose in a pre-tightening way through connecting bolts; the joint core is located inside the lining hose. The lining pipe connecting joint can hoop the lining pipe from the outside uniformly and continuously, a ring made of high polymer materials with stable long-term performance is sleeved outside the pipeline, the lining pipe is uniformly attached to the lining pipe after installation and extrusion, the lining pipe is firmly fixed on the joint inner core through extrusion, local discontinuous clamping cannot occur, the pipeline is evenly and continuously hooped in the circumferential direction of the pipeline, the sealing performance is good, local hard collision does not exist, and the lining pipe connecting joint is stable and reliable for long-term use.

Description

Interior bushing pipe attach fitting

Technical Field

The utility model relates to a attach fitting especially relates to a lining union coupling joint, belongs to pipeline repair technical field.

Background

In order to save urban land resources, pipelines are generally laid underground or below bridges in urban construction, are in shallow layers for a long time and are easy to rust and damage in dark and humid environments. In the existing repair method for additionally installing the lining pipe, when the pipeline is repaired, the pipeline to be repaired needs to be cut off from an original main pipe, then a lining hose is used for performing lining repair on the local pipeline to be repaired, and the original main pipe and the repaired pipeline are butted through a transition pipe after the repair is completed. However, in the prior art, the three-piece type clamp at the outer part of the pipeline joint can not be tightly attached to form a circular ring in an annular gapless manner, so that the outer part of the pipeline is accumulated and partially excessively extruded to form a longitudinal stress area, the reliability of the pipeline in long-term use is influenced, and certain potential safety hazards exist.

It is against this background that the present patent application proposes a lined pipe coupling.

SUMMERY OF THE UTILITY MODEL

The main object of the present invention is to overcome the above-mentioned disadvantages of the prior art, and to provide a joint for connecting inner lining pipes.

The utility model discloses a realize by following technical scheme:

a lining pipe connecting joint comprises a jacking ring, an outer sleeve, a packing ring, a pressure plate flange and a joint core;

the jacking ring is a steel ring structure body, and a boss is arranged on the jacking ring; the outer diameter of the outer sleeve is the same as the outer diameter of the tightening ring, the inner diameter of the outer sleeve is larger than the outer diameter of the boss, and the protruding part of the boss is arranged in the outer sleeve; more than 2 groups of packing rings are axially arranged in the outer sleeve, and the joints of the packing rings are arranged in a staggered manner; the outer ring of the pressure plate flange is provided with a threaded hole; the outer wall of the joint core is provided with an annular groove, and the front section of the joint core is of a tubular structure which is inserted into the lining hose and has a taper angle at the end part; the jacking ring, the outer sleeve and the pressure plate flange are positioned on the outer side of the lining hose and are connected with the lining hose in a pre-tightening mode through connecting bolts; the joint core is located inside the lining hose.

The outer sleeve is a steel pipe sleeve body.

The packing ring is a sealing ring with a square cross section and is woven by polytetrafluoroethylene wires.

The pressure plate flange is a steel annular body.

The joint core is of a steel sleeve type.

The utility model has the advantages that: due to the adoption of the technical proposal of the utility model,

under the prerequisite that the assurance inside lining restoration pipeline kneck leakproofness is good, this joint can be evenly cramp interior bushing pipe from the outside in succession, and the ring cover that adopts the polymer material of long-term stable performance to make is outside the pipeline, makes it evenly paste interior bushing pipe and extrude and make interior bushing pipe firmly fix on the joint inner core after the installation extrusion, local discontinuous block can not appear, guarantees the even continuous cramp pipeline of pipeline circumferencial direction, and the leakproofness is good, does not have local hard to collide with, uses stably and reliably for a long time.

The present invention will be further explained with reference to the drawings and examples.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the preferred embodiment of the present invention;

fig. 2 is a schematic view of the joint assembly of the preferred embodiment of the present invention.

Wherein: 1. a lining hose; 2. repairing the pipe section; 3. a connecting bolt; 4. a jacking ring; 5. a jacket; 6. a packing ring; 7. a platen flange; 8. a joint core; 9. a transition stub pipe; 10. the original pipe section.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in figures 1 and 2, the 1-lining hose is a thin-wall tubular pipeline made of flexible polymer composite materials, and is developed and manufactured in a non-standard mode according to the characteristics, pressure and the like of a medium flowing through the 10-original pipeline. 2-the repaired pipe section is a section with 10-the original pipe section with problems, the two ends are cut during repair, and the repaired pipe section is connected back into an integral pipeline by using a 9-transition pipe nipple. And 2, an operating distance is reserved after the pipe section is repaired by 2, the subsequent 1-lining hose installation operation is required, the pipe section is repaired by 2, the pipe section is generally a steel pipe, a standard connecting flange is welded at the end part after the pipe section is cut, and if a cement pipe is required to be provided with a special end part connecting piece, the connecting flange for subsequent installation is provided. The 3-connecting bolt is a standard bolt selected according to design and based on actual environmental conditions and service life, and materials and surface treatment need to meet the requirements of service requirements, service life, corrosion resistance and the like. The 4-top tight ring is a steel ring with a boss, when the steel ring is installed, the wide face is tightly attached to and aligned with the end connecting flange of the 2-repair pipe section, the outer diameter of the steel ring does not exceed the outer diameter of the sealing step of the connecting flange, and the 6-packing ring is extruded by the raised boss when the steel ring is connected by the 3-connecting bolt, so that the steel ring is deformed to realize fixing and sealing of the 1-lining hose. 5-the outer sleeve is a sleeve made of a standard steel pipe or a forged steel ring, the outer diameter of the outer sleeve is consistent with the outer diameter of the 4-tightening ring, and the inner diameter of the outer sleeve is slightly larger than that of the steel ring of the 4-tightening ring belt boss, so that the steel ring of the 4-tightening ring belt boss can be sleeved. 5-a plurality of groups of 6-packing rings arranged in the axial direction are arranged in the outer sleeve to limit the outward deformation of the 6-packing rings and restrict the 6-packing rings to extrude the 1-lining hose inwards. The 6-packing ring is a sealing ring with a square cross section and is woven by Polytetrafluoroethylene (PTFE) wires, and the PTFE has excellent environmental adaptability and is safe and stable for long-term use. The 6-packing ring can be intercepted by using a standard packing to form an annular sealing ring, and the interface parts of a plurality of 6-packing rings are arranged in a staggered manner, so that a failure channel cannot be formed. The 7-pressing plate flange is a circular ring made of steel plates, the outer ring of the 7-pressing plate flange is provided with flange bolt connecting holes consistent with the 10-original pipe sections and the like, and the difference is that threaded holes are arranged on the flange. The 8-joint core is a steel sleeve type part, the front section is a tubular structure which can be inserted into the 1-lining hose, the 8-joint core is manufactured according to the designed gap and the wall thickness requirement, and the insertion is facilitated by the necessary taper angle of the insertion front section. The outer wall of the tubular structure of the insertion section is also provided with 2 annular grooves, when the 6-packing ring extrudes the 1-lining hose, the 1-lining hose can be embedded into the grooves, the annular uniform nesting is realized, and the continuous uniform fixing and sealing are realized. The 8-joint core extends out of the 1-lining hose, and the structure is mainly a standard flange used for connecting a connecting pipeline after appropriate diameter change and is manufactured into a whole by adopting a welding mode so as to meet the installation requirement. When a 3-connecting bolt penetrates through a 4-top tightening ring and the outer part of a 5-jacket from a screw hole at the end part of a 2-repair pipe section and then is connected into a threaded hole of a 7-pressing plate flange, the 3-connecting bolt is continuously pre-tightened to enable the 4-top tightening ring and the 7-pressing plate flange to be continuously extruded and embedded into a 6-root ring in an annular space outside a 1-lining hose and in an inner space of the 5-jacket, the 6-root ring is tightly attached to the 1-lining hose after being extruded and deformed, the 1-lining hose is tightly attached to an 8-joint core, and the raised 6-root ring extrudes a local 1-lining hose into a groove on the 8-joint core, so that better fixation and sealing are realized. The 9-transition short-section pipe is a short-section steel pipe matched with the inner diameter of the 10-original pipe section, flanges are welded at two ends of the short-section steel pipe to meet the final tie-back, the specific length and the connection position are matched on site, and the final connection between the 1-lining hose joint and the 10-original pipe section is met.

The main installation steps of the lining pipe connecting joint are as follows:

(1) and installing the lining pipe

According to the requirements of the whole construction scheme, the 10-original pipe section is cut off from the positions with certain lengths at the two ends of the fault section to form opening sections meeting the penetrating construction requirements, then a steel wire rope is penetrated, a 1-lining hose is penetrated through the steel wire rope, and after the 1-lining hose penetrates out, a section of 1-lining hose with a length is reserved at the flange at the end of the 2-repair pipe section according to the requirements of an installation connector.

(2) External parts mounting

And cutting the end part of the 1-lining hose reserved outside the flange at the end part of the 2-repair pipe section according to the scheme and the installation requirement, and then installing a fixing ring required by the 8-joint core, and cutting off the redundant 1-lining hose. Then a 4-top tight ring, a 5-outer sleeve and a 7-pressure plate flange are sleeved outside the 1-lining hose at the end part in sequence.

(3) Joint core mounting

The 8-joint core is inserted through a fixing ring which is fixed outside the 1-lining hose, and the 8-joint core is stopped after reaching the required depth, and at the moment, the front section of the 8-joint core is submerged into the flange at the end part of the 2-repairing pipe section, so that the 1-lining hose extending part can be supported. At the moment, the 4-top tightening ring and the 5-jacket are pushed to be tightly attached to the flange face of the end part of the 2-repair pipe section, then the 7-pressing plate flange is close to the front part (close to the connecting flange side) of the 8-joint core as much as possible, the 6-packing ring is installed in a gap between the 7-pressing plate flange and the end part of the 5-jacket as required, and then the 7-pressing plate flange is pushed to be close to the end part of the 5-jacket.

(4) And joint mounting

The 3-connection bolts are passed from the threaded holes in the end of the 2-repair pipe section through the outer portions of the 4-puller ring and the 5-outer sleeve and then connected to the threaded holes in the 7-clamp plate flange. The continuous pre-tightening of the 3-connecting bolts enables the 4-jacking ring and the 7-pressing plate flange to continuously extrude the 6-packing ring embedded in the annular space outside the 1-lining hose and in the annular space inside the 5-jacket, the 6-packing ring is enabled to be extruded and deformed to be tightly attached to the 1-lining hose, the 1-lining hose is tightly attached to the 8-joint core, the raised 6-packing ring extrudes the local 1-lining hose to the groove on the 8-joint core, and better fixing and sealing are achieved. And finally, stopping the 3-connecting bolt after the torque of the 3-connecting bolt reaches the design requirement, and installing a related loosening device if necessary to ensure the long-term stable use of the bolt.

(5) Pipeline tie-back

Prefabricating a 9-transition short-section pipe according to the distance and the azimuth angle between the flange of the 8-joint core at the end part of the joint and the flange welded at the end part of the 10-original pipe section, and performing tie-back after matching and adjusting. And installing a sealing gasket between the flanges, connecting and fixing the flanges by using bolts, and fastening the bolts according to requirements to finish the tie-back of the pipeline.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.

Claims

1. A lining pipe connecting joint comprises a jacking ring, an outer sleeve, a packing ring, a pressure plate flange and a joint core;

the method is characterized in that: the jacking ring is a steel ring structure body, and a boss is arranged on the jacking ring; the outer diameter of the outer sleeve is the same as the outer diameter of the tightening ring, the inner diameter of the outer sleeve is larger than the outer diameter of the boss, and the protruding part of the boss is arranged in the outer sleeve; more than 2 groups of packing rings are axially arranged in the outer sleeve, and the joints of the packing rings are arranged in a staggered manner; the outer ring of the pressure plate flange is provided with a threaded hole; the outer wall of the joint core is provided with an annular groove, and the front section of the joint core is of a tubular structure which is inserted into the lining hose and has a taper angle at the end part; the jacking ring, the outer sleeve and the pressure plate flange are positioned on the outer side of the lining hose and are connected with the lining hose in a pre-tightening mode through connecting bolts; the joint core is located inside the lining hose.

2. A lined pipe joint as defined in claim 1, wherein: the outer sleeve is a steel pipe sleeve body.

3. A lined pipe joint as defined in claim 1, wherein: the packing ring is a sealing ring with a square cross section and is woven by polytetrafluoroethylene wires.

4. A lined pipe joint as defined in claim 1, wherein: the pressure plate flange is a steel annular body.

5. A lined pipe joint as defined in claim 1, wherein: the joint core is of a steel sleeve type.