CN222297323U - Lining pipe glue injection joint with axial reinforcement - Google Patents

Abstract

A glue-injected joint for an axially reinforced liner pipe, wherein the glue-injected inner tube body of the glue-injected outer sleeve is necked and locked on the outside of the liner hose installed on the joint core by glue injection, thereby fixing and sealing the end of the liner pipe. Under the premise of ensuring good sealing at the interface of the liner repair pipe, the outside of the joint has an axial connection component, which can ensure that after the joint is installed, the axial movement between the joint core and the glue-injected outer sleeve due to the thermal expansion and contraction of the pipe will not cause the joint core and the glue-injected outer sleeve to shift relative to each other, resulting in tearing and damage to the end of the liner pipe, and loss of sealing and fixing effect; ensure that the liner pipe installed inside is firmly fixed on the inner core of the joint, and there will be no shear displacement in the axial direction, thereby ensuring that the pipe joint has good sealing, no local hard bumps and axial displacement, and stable and reliable long-term use.

Description

Lining pipe glue injection joint with axial reinforcement

Technical Field

The utility model relates to a connecting joint for pipeline repair, in particular to a lining pipe glue injection joint with axial reinforcement.

Background

Pipelines are generally paved under the ground or bridges in urban construction so as to reduce land occupation and reduce abnormal damage risks. The pipeline is in the shallow underground layer for a long time, and rust and damage can occur when the pipeline runs in a dark and moist environment for a certain time. Because of being buried underground, the method has the advantages of high excavation construction difficulty, long time and high cost. When repairing the pipeline, the current repairing method for adding the lining pipe needs to cut off the pipeline to be repaired from the original main pipe, then uses a lining hose to repair the lining of the local pipeline to be repaired, and connects the original main pipe and the repairing pipeline through a transition pipe after the repairing is completed. However, in the prior art, the pipe with the inner diameter of 300mm is usually an injection joint, and the inner cavity of the injection rubber of the outer sleeve is formed into a necking and hooped on the inner liner pipe clamped by the outer sleeve of the joint core through high-pressure injection rubber, so that the fixing and sealing are formed. However, when the pipeline is used for a long time, the pipeline stretches axially, so that the joint core and the outer sleeve are easy to move, the lining pipe is sheared, and certain potential safety hazards exist.

It is against this background that this patent application proposes a lined pipe glue injection joint with axial reinforcement.

Disclosure of utility model

The main object of the present utility model is to overcome the above drawbacks of the prior art and to provide a glue injection joint for liner pipes with axial reinforcement.

The utility model is realized by the following technical scheme:

A lining pipe glue injection joint with axial reinforcement is characterized by comprising a joint core, a glue injection jacket, a sealing ring, a lining hose, an original pipe section and an axial connecting assembly, wherein the joint core comprises a core body, the core body is designed to be of a thick-wall pipe type structure, an axial connecting lug plate I, a tooth-shaped clamping groove, a glue lining groove and a sealing ring mounting groove are sequentially formed in the outer side wall of the core body, an outer fixing sleeve, an axial connecting lug plate II, a fastening screw and a glue injection connector are designed outside the glue injection jacket, a sleeve type structure with an annular cavity is arranged inside the glue injection jacket, a glue injection inner carcass is arranged on the inner wall of the sleeve type, a shrinkage neck of the glue injection inner tube of the glue injection jacket is locked outside the lining hose on the joint core through glue injection, and fixing and sealing are formed, and in order to prevent the joint core and the glue injection jacket from axial movement, the axial connecting assembly formed by bolts and nuts is arranged outside the glue injection jacket, and the lining hose is prevented from being torn due to mutual movement of the hot expansion joint core and the glue injection jacket.

Preferably, the front end of the joint core is inserted into one end of the lining hose until the tooth-shaped clamping groove completely enters the end, and the axial connecting lug plate I is connected with the axial connecting lug plate II of the glue injection sleeve through the axial connecting assembly to form fixation.

Preferably, the end of the core body is provided with a connection port connected with the original pipe section.

Further described, the core body ends may be welded to the flange.

Preferably, the axial connecting lug plates are welded in a plurality, and the requirements of installation and stress of the axial connecting assembly are met according to different thicknesses, connecting sizes and numbers of the axial connecting lug plates, and if the stress is larger, necessary supporting reinforcing rib plates can be additionally arranged.

Preferably, the tooth-shaped clamping groove designed at the front end of the core body is in an inverted wedge shape, 4-6 rings are arranged, and more rings can be designed for meeting the requirement of connecting and fixing the lining hose.

Preferably, the tooth-shaped clamping grooves are adjacently and integrally recessed to form rubber lining grooves with a certain width, the recessed depth is larger than the wall thickness of the lining hose, the width is 1/2 of the diameter of the lining hose, and the special situation is lengthened and shortened according to design characteristics.

Preferably, in order to meet the tightening and mounting requirements of the sealing ring, a sealing ring mounting groove is designed at the front end of the rubber lining groove, and the sealing ring is arranged to be 2 rings.

Preferably, the connection end of the core body and the lining hose is designed as a chamfer or an end fillet.

The utility model has the beneficial effects that due to the adoption of the technical scheme,

The utility model provides a take inside lining pipe injecting glue joint of axial reinforcement, makes the interior cell shrinkage of injecting glue overcoat lock outside the inside lining hose of ring cover installation on the joint core through injecting glue, forms the fixed and sealed to interior lining pipe tip. Under the prerequisite that pipeline interface department leakproofness is good is restoreed to the inside lining, this joint outside has axial coupling assembling, can ensure to connect after the installation of the end and accomplish and can not lead to the fact joint core and injecting glue overcoat to take place the dislocation each other because of the axial float that the pipeline expend with heat and contract with cold produced between joint core and the injecting glue overcoat, causes inside lining pipe tip tearing damage, loses sealed and fixed effect. The inner lining pipe of the internal installation is ensured to be firmly fixed on the joint inner core, shearing dislocation in the axial direction can not occur, the sealing performance of the pipeline joint is ensured to be good, no local hard collision and axial displacement exist, and the long-term use is stable and reliable.

The utility model is further described below with reference to the drawings and examples.

Drawings

FIG. 1 is a schematic overall installation of a preferred embodiment of the present utility model;

FIG. 2 is a schematic diagram of the structural composition of a preferred embodiment of the present utility model;

FIG. 3 is a schematic view of the connection and sealing structure of the preferred embodiment of the present utility model;

FIG. 4 is a schematic view showing the composition of the joint core structure according to the preferred embodiment of the present utility model;

FIG. 5 is a schematic diagram showing the construction of a glue injection jacket according to a preferred embodiment of the present utility model;

The device comprises a connector core, a 1.1 core body, a 1.2 axial connecting lug plate, a 1.3 tooth-shaped clamping groove, a 1.4 rubber lining groove, a 1.5 sealing ring mounting groove, a 2 rubber injection jacket, a 2.1 external fixing sleeve, a 2.2 axial connecting lug plate, a 2.3 rubber injection inner matrix, a 2.4 fastening screw, a 2.5 rubber injection connector, a 3 sealing ring, a 4 inner lining hose, a 5 original pipe section and a 6 axial connecting component.

Detailed Description

The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1, 2, 3, 4 and 5, the structure of the lining pipe glue injection joint with axial reinforcement comprises a joint core 1, a glue injection sleeve 2, a sealing ring 3, a lining hose 4, an original pipe section 5 and an axial connecting component 6, wherein the joint core 1 comprises a core body 1.1, the core body 1.1 is designed into a thick-wall pipe structure, an axial connecting lug plate 1.2, a tooth clamping groove 1.3, a glue injection groove 1.4 and a sealing ring mounting groove 1.5 are sequentially arranged on the outer side wall of the core body 1.1, an outer fixing sleeve 2.1, an axial connecting lug plate 2.2, a fastening screw 2.4 and a glue injection connector 2.5 are arranged outside the glue injection sleeve 2, the inside is provided with a sleeve-type structure with an annular cavity, the inner wall of the sleeve-type inner rubber injection sleeve 2.3 is locked outside the lining hose 4 on the joint core 1 through glue injection, and fixing and sealing are formed, and the inner lining hose 1 and the outer lining sleeve 2 are not provided with a shrinkage bolt 6 due to axial expansion of the inner lining hose 2 is formed by arranging the neck joint outside the neck sealing sleeve 2.

In the specific implementation process, the front end of the joint core 1 is inserted into one end of the lining hose 4 until the tooth-shaped clamping groove 1.3 completely enters the end, and the axial connecting lug plate I1.2 is connected with the axial connecting lug plate II 2.2 of the glue injection sleeve 2 through the axial connecting component 6 to form fixation.

In the concrete implementation process, the connection end of the core body 1.1 and the lining hose 4 is designed into a chamfer or an end fillet, and the tail end of the core body 1.1 is provided with a connection port connected with the original pipe section 5.

Further described, the core body 1.1 may be welded at its ends to flanges.

In the concrete implementation process, the first axial connecting lug plate is welded with a plurality of first axial connecting lug plates, and the requirements of installation and stress of the axial connecting assembly 6 are met according to different lug plate thicknesses, different connecting sizes and different numbers of the axial connecting lug plates, and if the stress is larger, necessary supporting reinforcing rib plates can be additionally arranged.

In the specific implementation process, the tooth-shaped clamping groove 1.3 designed at the front end of the core body 1.1 is in an inverted wedge shape, is provided with 4-6 rings, and can be designed into more rings in order to meet the requirement of connecting and fixing the lining hose 4.

In the concrete implementation process, the adjacent whole tooth-shaped clamping grooves 1.3 are recessed with rubber lining grooves 1.4 with certain width, the recessed depth is larger than the wall thickness of the lining hose 4, the width is 1/2 of the diameter of the lining hose 4, and special cases are lengthened and shortened according to design characteristics.

In the concrete implementation process, in order to meet the tightening and mounting requirements of the sealing ring 3, a sealing ring mounting groove 1.5 is designed at the front end of the rubber lining groove 1.4, and the sealing ring is arranged to be 2 rings.

In the concrete implementation process, the outer fixing sleeve 2.1 is manufactured by adopting a thick-wall seamless pipe or a forged cylinder, is processed into a structure with steps inside to meet the requirement of nested installation of the rubber injection inner tube body 2.3, is provided with an opening outside the middle part of the steps, is provided with a plurality of sinking tables on the end face of the thick-wall end, meets the requirement of a process handle of the lining hose 4 to be overturned to be fixed outside the outer fixing sleeve 2.1, is provided with a plurality of radial threaded holes at the rear end to meet the requirement of installation of the fastening screw 2.4, is welded outside the circumference of the front part outside the outer fixing sleeve 2.1, and is provided with a plurality of axial connecting lug plates 2.2 according to different axial stress lug plates with different thicknesses, different connecting sizes and different numbers to meet the requirement of installation and stress of the axial connecting assembly 6, and if the stress is larger, necessary supporting reinforcing rib plates and the like can be added.

In the concrete implementation process, the inner rubber-injection inner tube body 2.3 is an inner nest of a film and is installed in an inner step of the outer fixing sleeve 2.1 through annular welding at two ends, so that a cavity is formed in the inner portion, and the inner hole is consistent with the inner hole at the thick end of the outer fixing sleeve 2.1. The rear end is provided with fastening screws 2.4, the number of the fastening screws is consistent with that of screw holes of the outer fixing sleeve 2.1, different numbers and forms of screws can be selected according to the installation and fixing requirements and the structural size, the requirement of clamping the outer fixing sleeve 2.1 on the outside of the original pipe section 5 is met, the glue injection connector 2.5 is connected with an external opening in the middle of a step of the outer fixing sleeve 2.1, the opening is provided with processing sealing threads or is connected with the glue injection connector 2.5 through welding, and the circumference is generally provided with one set up and down. The glue injection connector 2.5 is a connector with an inner hole processed by round steel, the inner thread is consistent with a glue injection equipment connector, a matched plug is arranged, and the plug is installed after glue injection is completed.

In the concrete implementation process, the sealing ring 3 is made of rubber materials which meet the service life and are suitable for conveying media of the original pipe section 5, the cross section is circular, the inner diameter of the sealing ring is smaller than that of the sealing ring 1.5 mounting groove of the joint core 1, the sealing ring 1.5 mounting groove is tightly hooped, and the sealing ring cannot be separated from the groove when the joint core 1 is inserted and mounted. According to different requirements, sealing rings with different numbers and different sections can be installed, so that the use requirement of the joint is met.

In the specific implementation process, the axial connection component 6 is a high-strength bolt component with an anti-corrosion coating, can be in the form of an inner hexagon or an outer hexagon, and adopts a bolt and nut combination or a double-end stud. Through being connected coaxial hole unanimous axial connection otic placode 1.2 and axial connection otic placode 2.2 for can not throw off when the joint expend with heat and contract with cold, realize that joint core 1 and injecting glue overcoat 2 stable in position guarantee annular space installation's inside lining hose 4 structure safety and stability. According to the pressure requirement of the original pipe section 5, bolt combinations with different specifications, numbers and forms can be selected, the use requirement is met, and the fixing capacity exceeds the axial maximum stress.

In the implementation process, the implementation and use main steps of the lining pipe glue injection joint with axial reinforcement are as follows:

The first step is to determine the size and thickness of the lining hose 4 according to the specification and size of the original pipe section 5, the composition characteristics of the passing medium, the pressure and temperature, and the like, select proper materials for manufacturing, comprehensively perform design analysis of the joint, select proper materials for manufacturing, finish the machining of the components of the joint core 1 and the glue injection jacket 2 according to the illustrated form, purchase screw nuts of the sealing ring 3 and the axial connecting component 6, and the like, finish the manufacturing of the joint and transport to a construction site.

Cutting the original pipe section 5 to ensure that the end parts are flush and the burrs are cleaned, sleeving the glue injection jacket 2 into the end parts, and manually screwing the fastening screw 2.4 to ensure that the glue injection jacket 2 basically clamps the end part 5 of the original pipe section, wherein the glue injection connector 2.5 is arranged at the highest point and the lowest point. And then the lining hose 2 is penetrated out according to the construction repair requirement, and the penetrated lining hose 2 is required to be attached to the outer fixing sleeve 2.1 and is preferably drawn out by 10-15 mm. In order to mount and fix the lining hose 2 without play when the joint core 1 is inserted and mounted, several elongated fixing handles in the circumferential direction need to be cut out of the body of the lining hose 4 outside the cut-out line of the lining hose 2. The handle is turned over and attached to the outside of the outer fixing sleeve 2.1 through an iron wire or a binding belt, and is clamped with the end sinking table groove of the outer fixing sleeve 2.1, so that the fixing stability is ensured, and the end part is not protruded.

And thirdly, inserting the joint core 1 into the end 2 of the glue injection jacket with the lining hose 4 fixed, and controlling concentric alignment and sleeving of the joint core and the glue injection jacket as much as possible. The axial connection lug plates 1.2 and the axial connection lug plates 2.2 are adjusted to be basically opposite, then the joint core 1 is continuously inserted into the lining hose 4 fixed at the end part of the glue injection sleeve 2 by uniformly tightening a plurality of bolts on the circumference between the two lug plates according to long bolts, and at the moment, the sealing ring 3 is extruded to form primary sealing.

And fourthly, after the joint core 1 is inserted into the designed depth, connecting the glue injection equipment with the glue injection connector 2.5 to inject the glue into the glue injection jacket 2, injecting the curable glue according to the design requirement, wherein the glue injection pressure of the glue injection inner tire body 2.3 generates necking deformation, continuously pressurizing and then deforming to enlarge the tightening outside the lining hose 4, and installing the joint core 1 necking in the joint core so that the glue injection inner tire body 2.3 extrudes the lining hose 4 to be tightly adhered to the tooth-shaped clamping groove 1.3 and the lining groove 1.4, thereby forming stable fixation and sealing. And after the required pressure is reached, the colloid is kept to be solidified for a certain time, the equipment is removed, and a plug is arranged outside the glue injection connector 2.5 to prevent rainwater or dust from entering.

And fifthly, fastening the fastening screw 2.4 to the design required torque so that the glue injection jacket 2 and the original pipe section 5 are firmly fixed. And then cutting out the handle of the outer fixing sleeve 2.1 protruding from the end part of the lining hose 4 in the circumferential direction, and correcting the end part of the lining hose 4 to finish the installation of the lining pipe joint. And the rest operations such as tie-back and the like are carried out according to the whole construction flow, so that the non-excavation lining pipe repair of the pipeline is completed.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present utility model.

Claims (9)

1. A lining pipe glue injection joint with axial reinforcement is characterized by comprising a joint core, a glue injection jacket, a sealing ring, a lining hose, an original pipe section and an axial connecting assembly, wherein the joint core comprises a core body, the core body is designed to be of a thick-wall pipe type structure, an axial connecting lug plate I, a tooth-shaped clamping groove, a glue lining groove and a sealing ring mounting groove are sequentially formed in the outer side wall of the core body, an outer fixing sleeve, an axial connecting lug plate II, a fastening screw and a glue injection connector are designed outside the glue injection jacket, a sleeve type structure with an annular cavity is arranged inside the glue injection jacket, a glue injection inner carcass is arranged on the inner wall of the sleeve type, a shrinkage neck of the glue injection inner tube of the glue injection jacket is locked outside the lining hose on the joint core through glue injection, and fixing and sealing are formed, and in order to prevent the joint core and the glue injection jacket from axial movement, the axial connecting assembly formed by bolts and nuts is arranged outside the glue injection jacket, and the lining hose is prevented from being torn due to mutual movement of the hot expansion joint core and the glue injection jacket.

2. The glue injection joint for lining pipe with axial reinforcement as set forth in claim 1, wherein the front end of the joint core is inserted into one end of the lining hose until the tooth-shaped clamping groove is completely inserted into the end, and the first axial connecting lug plate is connected with the second axial connecting lug plate of the glue injection jacket through the axial connecting assembly to form a fixation.

3. The lined pipe glue joint with axial reinforcement as set forth in claim 1, wherein the end of the core body is provided with a connection port for connecting with the original pipe section.

4. The lined pipe glue joint with axial reinforcement of claim 1, wherein the end of the core body is welded to the flange.

5. The lining pipe glue injection joint with axial reinforcement according to claim 1, wherein the first axial connecting lug plate is welded in a plurality of parts, and the requirement of installation and stress of the axial connecting assembly is met according to different thicknesses, connecting sizes and numbers of the axial connecting lug plates and the requirement of necessary supporting reinforcing rib plates can be added if the stress is larger.

6. The lined pipe glue injection joint with axial reinforcement as set forth in claim 1, wherein the tooth-shaped clamping groove is formed in the front end of the core body.

7. The glue injection joint for lining pipes with axial reinforcement according to claim 6, wherein the tooth-shaped clamping grooves are adjacently and integrally recessed with a glue lining groove with a certain width, the depth of the recess is larger than the wall thickness of the lining hose, and the width is 1/2 of the diameter of the lining hose.

8. The lining pipe glue injection joint with axial reinforcement according to claim 7, wherein a sealing ring installation groove is designed at the front end of the lining glue groove for meeting the requirement of tightening and installing a sealing ring, and the sealing ring is arranged to be 2 circles.

9. The glue injection joint for lining pipes with axial reinforcement according to claim 1, wherein the connecting end of the core body and the lining hose is provided with a chamfer or a round angle.