CN115325314A - Pipeline local trenchless repairing and reinforcing system and construction method - Google Patents

Abstract

The invention discloses a pipeline local trenchless repairing and reinforcing system and a construction method, wherein the system comprises a repairing device and a repairing material connected with the repairing device; the repairing device comprises an operating vehicle, an automatic cutting unit, a pipeline detecting unit, a hot air pressurizing and conveying unit and a display unit arranged on the ground; the automatic cutting unit comprises a controller, an adjustable cutter control rod, an adjustable cutter, an adjustable perforated pipe arranged in the center of the repairing material and plugs arranged at two ends of the repairing material; detecting and positioning the damaged position and the condition of the pipeline through a pipeline detection unit, controlling the operation vehicle to advance in the pipeline and conveying the repairing material to the damaged position of the pipeline; the hot gas pressurizing and conveying unit is used for pressurizing and expanding the repairing material and tightly combining the repairing material with the inner wall of the pipeline; the controller controls the telescopic rotation of the adjustable cutter control rod, controls the cutting surface of the adjustable cutter and controls the telescopic movement of the adjustable perforated pipe to jointly realize the cutting of plugs at two ends of the repairing material, and the trenchless repairing of the underground drainage pipeline damage is realized.

Description

Pipeline local trenchless repairing and reinforcing system and construction method

Technical Field

The invention belongs to the technical field of trenchless repair of urban underground pipelines, and particularly relates to a pipeline local trenchless repair reinforcing system and a construction method.

Background

Along with the continuous expansion of urban construction, urban underground pipe network systems are more and more complex, and the embedding depth is deeper and deeper. Urban pipelines are one of important infrastructures for supporting social development and guaranteeing people's life, and pipeline maintenance is a necessary means for guaranteeing normal mechanism and function of the urban pipelines. Underground pipelines are inevitably damaged in the urban construction process; due to the particularity of urban underground pipelines and the complexity of ground environment, when the underground sewer pipelines are damaged, the pipeline repairing work is mainly carried out by two repairing modes of excavation repairing and trenchless repairing.

Excavation repair or replacement is usually adopted in traditional municipal construction, the outgoing of citizens is often influenced by the construction method, meanwhile, the construction period is long, the input manpower, material resources, financial resources and the like are increased, the construction method is more and more impractical, and the construction method is complicated, complicated and large in destructiveness; the trenchless repair is increasingly important for the repair mode with low influence and low maintenance of infrastructure; at present, in the existing trenchless repairing method of the pipeline: patent CN201922020065.3 discloses inflating an annular air bag to make the outer annular wall of the annular air bag tightly attached to the pipe wall of the pipe, and then injecting a repairing material into the defect position of the pipe from a grouting hole; but only one crack can be repaired at one time, the operation is complex, the grouting allowance influences the water flow, and the pipeline is not reinforced; patent CN202110524470.8 discloses repairing a pipeline by epoxy resin, which can make the pipeline repair more convenient and can effectively save repair cost, but has complex operation and no reinforcement effect on the damaged pipeline;

therefore, a pipeline local trenchless repairing and reinforcing system and method which are convenient to operate, safe and reliable, and can reinforce the damaged position of the pipeline without blocking the flowing water in the pipeline by the formed repairing material are urgently needed.

Disclosure of Invention

Aiming at the defects or improvement requirements in the prior art, the invention provides a pipeline local trenchless repairing and reinforcing system and a construction method, wherein the damaged position and condition of a pipeline material are detected and positioned by a pipeline detection unit and displayed on a display unit, the length of the repairing material is determined according to the length of the damaged pipeline, an operating vehicle is controlled to advance in the pipeline according to the detection and positioning result of the pipeline detection unit, and the repairing material is transported to the damaged position of the pipeline; the controller controls the telescopic fixing rod to fix the operation vehicle on the inner wall of the pipeline; the hot gas is conveyed to the repairing material through the hot gas pressurizing and conveying unit, so that the repairing material is pressurized and expanded and is tightly combined with the inner wall of the pipeline, and the sealing material is cooled and shaped by inputting cold gas after pressure stabilization; the controller controls the adjustable cutter control rod and the adjustable cutter to cut plugs on two sides of the repairing material according to the inner wall of the pipeline, so that the formed repairing material can not block flowing water in the pipeline, and trenchless repairing of the damage of the underground drainage pipeline is realized; convenient operation, safe and reliable, the repair material after the shaping can not produce the hindrance and can play the reinforcing effect to the damaged department of pipeline to the flowing water in the pipeline, can solve traditional pipeline repair and take the excavation to repair or replace, influences citizen's trip, and the construction cycle is long, and manpower, material resources, financial resources drop into big problem and current non-excavation repair method operation complicacy, and the slip casting surplus influences rivers, does not have the problem of reinforcing effect to the damaged department of pipeline.

In order to achieve the above object, an aspect of the present invention provides a reinforcement system for local trenchless repair of a pipeline, comprising a repair device capable of freely running inside a pipeline to be repaired and a repair material connected to the repair device; wherein the content of the first and second substances,

the repairing device comprises an operation vehicle, an automatic cutting unit, a pipeline detection unit, a hot air pressurizing and conveying unit and a display unit, wherein the automatic cutting unit, the pipeline detection unit and the hot air pressurizing and conveying unit are arranged on the operation vehicle; the automatic cutting unit comprises a controller arranged at one end of the operating vehicle, an adjustable cutter control rod connected with the controller, an adjustable cutter connected with the adjustable cutter control rod, an adjustable perforated pipe penetrating the center of the repairing material and plugs arranged at two ends of the repairing material; the hot gas pressurizing and conveying unit is connected with the adjustable perforated pipe; the operating vehicle is also provided with a telescopic fixed rod which is connected with the controller and is used for stabilizing the operating vehicle; the repairing material can be softened at high temperature and can be tightly jointed with the inner wall of the pipeline under the gas pressure, and the repairing material can be shaped after being cooled and can support and reinforce the inner wall of the pipeline through the strength of the repairing material;

detecting and positioning the damaged position and the condition of the pipeline material through the pipeline detection unit, further determining the length of the repairing material, controlling an operation vehicle to advance in the pipeline according to the detection and positioning result of the pipeline detection unit, and transporting the repairing material to the damaged position of the pipeline; the hot gas is conveyed to the repairing material through the hot gas pressurizing and conveying unit, so that the repairing material is pressurized and expanded and is tightly combined with the inner wall of the pipeline; through controller control adjustable cutter control lever stretch out and draw back and rotate, control adjustable cutter's cutting plane and control adjustable floral tube's flexible realizes the cutting to two tip end caps of repair material jointly, realizes repairing the damaged non-excavation of underground drainage pipe.

Further, the hot gas pressurization conveying unit comprises a ground pressure air storage tank arranged on the ground, a rubber guide pipe connected with the ground pressure air storage tank, and a steel guide pipe which is arranged inside the operation vehicle and inside the adjustable cutter control rod in a penetrating mode.

Furthermore, one end of the steel guide pipe is connected with the rubber guide pipe through a connector, and the other end of the steel guide pipe is connected with one end, close to the controller, of the adjustable perforated pipe; the adjustable perforated pipe is communicated with the ground pressure gas storage tank through the rubber guide pipe and the steel guide pipe which are sequentially connected, so that hot air pressure can smoothly reach the repairing material; the rubber guide pipe and the steel guide pipe which are made of different materials are effectively connected through the connector, and the integral tightness of the hot gas pressurizing and conveying pipeline is ensured.

Further, the rubber conduit is located at the tail end of the operating vehicle, and the repairing material is located at the head end of the operating vehicle.

Further, the adjustable cutter control rod can freely move in a telescopic mode along the central axis of the steel guide pipe under the control of the controller.

Further, the centers of the operating cart, the controller, the adjustable cutter control rod and the adjustable cutter are collinear.

The invention also provides a pipeline local trenchless repairing and reinforcing construction method, which comprises the following steps:

s1: detecting the damaged position of the pipeline in advance through a pipeline detection unit and recording; determining the length of the material to be repaired according to the detected pipeline breakage length;

s2: the repairing device and the repairing material are integrally placed in an inspection well, the repairing device and the repairing material are assembled in the inspection well, and the repairing device and the repairing material are placed in a pipeline to be repaired;

s3: the condition in the pipeline is displayed on a ground display unit through a pipeline detection unit on the ground, the controller controls the operation vehicle to move forwards in the pipeline, the pipeline detection unit is used for accurately positioning, and the repairing material is conveyed to the damaged position of the pipeline;

s4: the telescopic fixing rod on the operation vehicle is adjusted through the controller to fix the operation vehicle;

s5: starting the ground pressure gas storage tank, conveying hot gas in the ground pressure gas storage tank to the adjustable perforated pipe through the rubber guide pipe and the steel guide pipe, and heating and expanding the repairing material through high temperature and air pressure to enable the repairing material to be tightly combined with the inner wall of the pipeline;

s6: keeping the air pressure in the repairing material unchanged, reducing the air pressure temperature in the material to be repaired, and finally cooling, forming and fixing to finish the repairing and strengthening of the pipeline;

s7: the controller is used for controlling the adjustable cutter control rod and the adjustable cutter, the end cap close to the adjustable cutter is cut off according to the diameter of the repaired pipeline, the controller is used for controlling the adjustable perforated pipe to contract and the adjustable perforated pipe to extend, and the end cap of the adjustable perforated pipe far away from one end of the adjustable cutter is cut, so that the formed repaired material can not block flowing water in the pipeline;

s8: the adjustable cutter control rod and the adjustable cutter are retracted through the controller, the telescopic fixing rod is retracted simultaneously, the repairing device is moved out of the pipeline to the inspection well and is taken out, and trenchless repairing of the pipeline is completed.

In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:

(1) According to the pipeline local trenchless repairing and reinforcing system, the pipeline detection unit is used for detecting and positioning the damaged position and the condition of a pipeline material and displaying the position and the condition on the display unit, the length of the repairing material is determined according to the length of the damaged pipeline, the operation vehicle is controlled to advance in the pipeline according to the detection and positioning result of the pipeline detection unit, the repairing material is transported to the damaged position of the pipeline, and ground operators are guaranteed to accurately and reliably finish repairing the damaged position of the pipeline; the operation is convenient, safe and reliable; the hot air is conveyed to the repairing material through the hot air pressurizing and conveying unit, the thermal expansion property of the repairing material is skillfully utilized, the repairing material is tightly contacted with the inner wall of the pipeline, cold air is input after pressure stabilization, the sealing material is cooled and shaped, meanwhile, the self strength of the repairing material is utilized to play a role in reinforcing the damaged part of the pipeline, the repairing compactness of the damaged part is ensured, and the repairing process is not disturbed by flowing water and the outside; the installation of the repairing materials with different damage lengths of the pipeline is solved through the adjustable perforated pipe.

(2) According to the pipeline local trenchless repairing reinforcement system, the controller controls the adjustable cutter control rod and the adjustable cutter to cut the plugs at two sides of the repairing material according to the inner wall of the pipeline, so that the formed repairing material can not block flowing water in the pipeline, and trenchless repairing of underground drainage pipeline damage is realized.

(3) According to the pipeline local trenchless repairing and reinforcing system, the controller controls the telescopic fixing rod on the operation vehicle to stretch, so that the repairing device can be freely transported in the pipeline and can be stably stopped at a certain place, and the repairing device is not moved due to external force and flowing water.

(4) According to the pipeline local trenchless repairing reinforcement system, the adjustable perforated pipes are arranged on the repairing material, and the plugs capable of being recycled are arranged at the two ends of each adjustable perforated pipe, so that the construction cost is effectively saved.

Drawings

FIG. 1 is a schematic structural view of a pipeline local trenchless repairing and reinforcing system according to an embodiment of the present invention;

fig. 2 is a schematic flow chart of a method for reinforcing and repairing local trenchless pipe in accordance with an embodiment of the present invention.

In all the figures, the same reference numerals denote the same features, in particular: the device comprises an operation vehicle 1, an automatic cutting unit 2, a controller 21, an adjustable cutter control rod 22, an adjustable cutter 23, an adjustable perforated pipe 24, a plug 25, a pipeline detection unit 3, a hot air pressurization conveying unit 4, a ground pressure air storage tank 41, a rubber guide pipe 42, a steel guide pipe 43, a connector 44, a repairing material 5 and a display unit 6.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention. In addition, the technical features involved in the respective embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, when an element is referred to as being "fixed to", "disposed on" or "provided on" another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element; the terms "mounted," "connected," and "provided" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

As shown in fig. 1, one aspect of the present invention provides a pipeline local trenchless repairing and reinforcing system, which comprises a repairing device capable of freely running inside a pipeline to be repaired and a repairing material 5 connected with the repairing device; the repairing device comprises an operation vehicle 1, an automatic cutting unit 2, a pipeline detection unit 3, a hot air pressurizing and conveying unit 4 and a display unit 6, wherein the automatic cutting unit 2, the pipeline detection unit 3, the hot air pressurizing and conveying unit 4 are arranged on the operation vehicle 1, the display unit 6 is arranged on the ground and is in communication connection with the pipeline detection unit 3, and a repairing material 5 is jointly connected with the automatic cutting unit 2 and the hot air pressurizing and conveying unit 4; the automatic cutting unit 2 comprises a controller 21 arranged at one end of the operating vehicle 1, an adjustable cutter control rod 22 connected with the controller 21, an adjustable cutter 23 connected with the adjustable cutter control rod 22, an adjustable perforated pipe 24 penetrating the center of the repairing material 5 and plugs 25 arranged at two ends of the repairing material 5; the adjustable perforated pipe 24 is an important connecting channel for two plugs at two ends of the repairing material 5; the plug 25 is used for ensuring the sealing property inside the repairing material 5; the operation vehicle 1 is also provided with a telescopic fixing rod 11 connected with the controller 21, and after the operation vehicle 1 determines the pipeline repairing position, the fixing rod is lifted out, so that the operation vehicle is ensured to be stable and does not move under the influence of pipeline running water; the invention detects and positions the damaged position and the condition of the pipeline material through the pipeline detection unit 3 and displays the position and the condition on the display unit 6, determines the length of the repairing material 5 according to the length of the damaged pipeline, controls the operation vehicle 1 to advance in the pipeline according to the detection and positioning result of the pipeline detection unit 3, and transports the repairing material 5 to the damaged position of the pipeline; the controller 21 controls the telescopic fixing rod 11 to fix the operation vehicle 1 on the inner wall of the pipeline; the hot air is conveyed to the repairing material 5 through the hot air pressurizing and conveying unit 4, so that the repairing material 5 is pressurized and expanded and is tightly combined with the inner wall of the pipeline; the controller 21 controls the adjustable cutter control rod 22 and the adjustable cutter 23, the end cap close to one end of the adjustable cutter is cut off according to the diameter of the repaired pipeline, and the end cap on the other side of the repairing material 5 is cut off by controlling the contraction of the adjustable perforated pipe 24 and the extension of the adjustable cutter control rod, so that the trenchless repairing of the underground drainage pipeline damage is realized; convenient operation, safe and reliable, the repair material after the shaping can not produce the hindrance and can play the reinforcing effect to the damaged department of pipeline to flowing water in the pipeline, can solve traditional pipeline repair and take the excavation to repair or replace, influence citizen's trip, construction cycle is long, and manpower, material resources, financial resources put into big problem and current non-excavation repair method operation complicacy, and the slip casting surplus influences rivers, does not have the problem of reinforcing effect to the damaged department of pipeline.

Further, as shown in fig. 1, the centers of the operating vehicle 1, the controller 21, the adjustable cutter control lever 22 and the adjustable cutter 23 are collinear; the adjustable cutter control rod 22 can freely move telescopically along the central axis of the steel guide pipe 43 under the control of the controller 21; the adjustable cutter 23 is used for cutting the plug part of the repaired pipeline after completing repairing the material, so that two ends of the repaired material 5 are flush with the inner wall of the pipeline, and the influence on later-stage pipeline drainage is avoided; the adjustable cutter 23 can adjust the length of the cutter under the control of the controller 21, so as to adjust the size of a cutting surface; the controller 21 controls the adjustable cutter control rod 22 to stretch and rotate, the adjustable cutter 23 to be short and the adjustable perforated pipe 24 to stretch, so that the plugs at the two ends of the repair material 5 are cut together.

Further, as shown in fig. 1, the hot air pressurized conveying unit 4 includes a ground pressure air storage tank 41 disposed on the ground, a rubber conduit 42 connected to the ground pressure air storage tank 41, and a steel conduit 43 sequentially penetrating the inside of the operating vehicle 1 and the inside of the adjustable cutter control rod 22; one end of the steel conduit 43 is connected with the rubber conduit 42 through a connector 44, and the other end is connected with one end of the adjustable perforated pipe 24 close to the controller 21; according to the invention, the adjustable perforated pipe 24 is communicated with the ground pressure air storage tank 41 through the rubber guide pipe 42 and the steel guide pipe 43 which are sequentially connected, so that hot air pressure can smoothly reach the repairing material 5; the rubber conduit 42 and the steel conduit 43 of different materials are effectively connected by the connector 44, so that the whole tightness of the hot gas pressurized conveying pipeline is ensured.

Further, as shown in fig. 1, the telescopic fixing rod 11 is used for lifting out the fixing rod after the repairing position is determined, so as to ensure that the operation vehicle is stable and does not move under the influence of flowing water; the rubber guide tube 42 is positioned at the tail end of the operating vehicle 1, and the repairing material 5 is positioned at the head end of the operating vehicle 1; the repairing material 5 can be softened at high temperature, can be in close contact with the inner wall of the pipeline under the gas pressure, ensures seamless connection, can be shaped after the repairing material is cooled, generates certain strength, and plays a role in supporting and reinforcing the inner wall of the pipeline.

As shown in fig. 2, another aspect of the present invention provides a method for reinforcing a local trenchless repair of a pipeline, comprising the following steps:

s1: detecting the damaged position of the pipeline in advance through a pipeline detection unit and recording; determining the length of the material to be repaired according to the damaged length of the detection pipeline;

s2: putting the repairing device and the repairing material into an inspection well integrally, assembling the repairing device and the repairing material in the inspection well, and putting the repairing device and the repairing material into a pipeline to be repaired;

s3: the condition in the pipeline is displayed on a ground display unit through a pipeline detection unit on the ground, the controller controls the operation vehicle to move forwards in the pipeline, the pipeline detection unit is used for accurately positioning, and the repairing material is conveyed to the damaged position of the pipeline;

s4: the telescopic fixing rod on the operation vehicle is adjusted through the controller to fix the operation vehicle;

s5: starting the ground pressure gas storage tank, conveying hot gas in the ground pressure gas storage tank to the adjustable perforated pipe through the rubber guide pipe and the steel guide pipe, and heating and expanding the repairing material through high temperature and air pressure to enable the repairing material to be tightly combined with the inner wall of the pipeline;

s6: keeping the air pressure in the repairing material unchanged, reducing the air pressure temperature in the material to be repaired, and finally cooling, forming and fixing to finish the repairing and strengthening of the pipeline;

s7: the controller is used for controlling the adjustable cutter control rod and the adjustable cutter, the end cap close to the adjustable cutter is cut off according to the diameter of the repaired pipeline, the controller is used for controlling the adjustable perforated pipe to shrink and the adjustable perforated pipe to extend, so that the end cap far away from one end of the adjustable cutter can be cut, and the formed repaired material can not block flowing water in the pipeline;

s8: the adjustable cutter control rod and the adjustable cutter are retracted through the controller, the telescopic fixing rod is retracted simultaneously, the repairing device is moved out of the pipeline to the inspection well and is taken out, and trenchless repairing of the pipeline is completed.

The invention provides a pipeline local trenchless repair reinforcing system and a method, which have the working principle that: detecting pipeline damage data by adopting a pipeline detection unit in advance, and selecting the length of a repairing material according to the pipeline damage degree and length displayed by the pipeline damage data; the repairing device is placed in a pipeline, a ground operator can determine the accurate placement of the repairing material according to a pipeline detection unit, then the ground pressure gas storage tank is started, hot gas in the ground pressure gas storage tank is conveyed to an adjustable perforated pipe through a rubber guide pipe and a steel guide pipe and then conveyed into the closed repairing material, the repairing material is softened due to the increase of air pressure and the rise of temperature, meanwhile, the repairing material is tightly attached to the inner wall of the existing pipeline, and the sealing material can be cooled and shaped by inputting cold air after the pressure is stabilized; secondly, the controller controls the adjustable cutter control rod and the adjustable cutter to cut the plugs on the two sides of the repair material according to the inner wall of the pipeline, so that the formed repair material can not obstruct the flowing water in the pipeline; finally, moving the repairing device out of the pipeline to an inspection well, and taking out the repairing device to finish the trenchless repairing of the pipeline; the method can also be operated with water and is not influenced by running water; convenient operation, safe and reliable, the repair material after the shaping can not produce the hindrance and can play the reinforcing effect to the damaged department of pipeline to the flowing water in the pipeline, can solve traditional pipeline repair and take the excavation to repair or replace, influences citizen's trip, and the construction cycle is long, and manpower, material resources, financial resources drop into big problem and current non-excavation repair method operation complicacy, and the slip casting surplus influences rivers, does not have the problem of reinforcing effect to the damaged department of pipeline.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (7)

1. The utility model provides a pipeline part is trenchless to repair and is strengthened system which characterized in that: comprises a repairing device which can freely run in the pipeline to be repaired and a repairing material (5) connected with the repairing device; wherein, the first and the second end of the pipe are connected with each other,

the repairing device comprises an operation vehicle (1), an automatic cutting unit (2), a pipeline detection unit (3), a hot air pressurizing and conveying unit (4) and a display unit (6), wherein the automatic cutting unit (2), the pipeline detection unit (3) and the hot air pressurizing and conveying unit are arranged on the operation vehicle (1), and the display unit (6) is arranged on the ground and is in communication connection with the pipeline detection unit (3); the automatic cutting unit (2) comprises a controller (21) arranged at one end of the operation vehicle (1), an adjustable cutter control rod (22) connected with the controller (21), an adjustable cutter (23) connected with the adjustable cutter control rod (22), an adjustable perforated pipe (24) penetrating the center of the repairing material (5) and plugs (25) arranged at two ends of the repairing material (5); the hot gas pressurizing and conveying unit (4) is connected with the adjustable perforated pipe (24); the operating vehicle (1) is also provided with a telescopic fixing rod (11) which is connected with the controller (21) and is used for stabilizing the operating vehicle; the repairing material (5) can be softened at high temperature and can be tightly jointed with the inner wall of the pipeline under the gas pressure, and the repairing material (5) can be shaped after being cooled and can support and reinforce the inner wall of the pipeline through the strength of the repairing material;

detecting and positioning the damaged position and condition of the pipeline material through the pipeline detection unit (3), controlling the operation vehicle (1) to advance in the pipeline, and transporting the repairing material (5) to the damaged position of the pipeline; the hot air is conveyed to the repairing material (5) through the hot air pressurizing and conveying unit (4), so that the repairing material (5) is pressurized and expanded and is tightly combined with the inner wall of the pipeline; the controller (21) controls the telescopic and rotary motion of the adjustable cutter control rod (22) and controls the cutting surface of the adjustable cutter (23) and the telescopic motion of the adjustable perforated pipe (24), so that the plugs at two ends of the repair material (5) are cut together, and the underground drainage pipeline is repaired in a damaged non-excavation mode.

2. The system of claim 1, wherein: steam pressurization conveying unit (4) including locate ground pressure gas holder (41) on ground, with rubber pipe (42) that ground pressure gas holder (41) link to each other, run through in proper order and locate operation car (1) inside with adjustable cutter control lever (22) inside steel pipe (43).

3. The system of claim 2, wherein: one end of the steel guide pipe (43) is connected with the rubber guide pipe (42) through a connector (44), and the other end of the steel guide pipe is connected with one end, close to the controller (21), of the adjustable perforated pipe (24); the adjustable perforated pipe (24) is communicated with the ground pressure air storage tank (41) through the rubber guide pipe (42) and the steel guide pipe (43) which are connected in sequence, so that hot air pressure can smoothly reach the repairing material (5); the rubber guide pipe (42) and the steel guide pipe (43) which are made of different materials are effectively connected through the connector (44), and the integral tightness of the hot gas pressurization conveying pipeline is ensured.

4. The system of claim 3, wherein: the rubber guide pipe (42) is located at the tail end of the operating vehicle (1), and the repairing material (5) is located at the head end of the operating vehicle (1).

5. The system of claim 4, wherein: the adjustable cutter control rod (22) can freely move in a telescopic mode along the central axis of the steel guide pipe (43) under the control of the controller (21).

6. The system of any one of claims 1-5, wherein: the centers of the operating vehicle (1), the controller (21), the adjustable cutter control rod (22) and the adjustable cutter (23) are collinear.

7. A method for reinforcing a local trenchless pipeline repairing system according to any one of claims 1 to 6, comprising the steps of:

s1: detecting the damaged position of the pipeline in advance through a pipeline detection unit and recording; determining the length of the material to be repaired according to the detected pipeline breakage length;

s2: the repairing device and the repairing material are integrally placed in an inspection well, the repairing device and the repairing material are assembled in the inspection well, and the repairing device and the repairing material are placed in a pipeline to be repaired;

s3: the condition in the pipeline is displayed on a ground display unit through a pipeline detection unit on the ground, the controller controls the operation vehicle to move forwards in the pipeline, the pipeline detection unit is used for accurately positioning, and the repairing material is conveyed to the damaged position of the pipeline;

s4: the telescopic fixing rod on the operation vehicle is adjusted through the controller to fix the operation vehicle;

s5: starting the ground pressure gas storage tank, conveying hot gas in the ground pressure gas storage tank to the adjustable perforated pipe through the rubber guide pipe and the steel guide pipe, and heating and expanding the repairing material through high temperature and air pressure to enable the repairing material to be tightly combined with the inner wall of the pipeline;

s6: keeping the air pressure in the repairing material unchanged, reducing the air pressure temperature in the material to be repaired, and finally cooling, forming and fixing to finish the repairing and strengthening of the pipeline;

s7: the controller is used for controlling the adjustable cutter control rod and the adjustable cutter, the end cap close to the adjustable cutter is cut off according to the diameter of the repaired pipeline, the controller is used for controlling the adjustable perforated pipe to contract and the adjustable perforated pipe to extend, and the end cap of the adjustable perforated pipe far away from one end of the adjustable cutter is cut, so that the formed repaired material can not block flowing water in the pipeline;

s8: the adjustable cutter control rod and the adjustable cutter are retracted through the controller, the telescopic fixing rod is retracted simultaneously, the repairing device is moved out of the pipeline to the inspection well and is taken out, and trenchless repairing of the pipeline is completed.

Images