CN116538375A - Grouting plugging device and method for repairing underground buried pipeline - Google Patents

Grouting plugging device and method for repairing underground buried pipeline Download PDF

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Publication number
CN116538375A
CN116538375A CN202310557536.2A CN202310557536A CN116538375A CN 116538375 A CN116538375 A CN 116538375A CN 202310557536 A CN202310557536 A CN 202310557536A CN 116538375 A CN116538375 A CN 116538375A
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CN
China
Prior art keywords
grouting
pipeline
barrel
annular air
inlet pipe
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Pending
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CN202310557536.2A
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Chinese (zh)
Inventor
胡伟
史和平
李小川
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CITIC Construction Co Ltd
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CITIC Construction Co Ltd
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Application filed by CITIC Construction Co Ltd filed Critical CITIC Construction Co Ltd
Priority to CN202310557536.2A priority Critical patent/CN116538375A/en
Publication of CN116538375A publication Critical patent/CN116538375A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/1645—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a sealing material being introduced inside the pipe by means of a tool moving in the pipe
    • F16L55/16455—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a sealing material being introduced inside the pipe by means of a tool moving in the pipe a part of the tool defining, together with the inner wall of the pipe, an enclosed space into which sealing material is injected
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/02—Preventing, monitoring, or locating loss
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipe Accessories (AREA)

Abstract

The invention discloses a grouting plugging device and method for repairing an underground buried pipeline, and belongs to the field of underground pipe network repair. The device comprises a grouting barrel, a grouting pipe and an air inlet pipe, wherein the grouting pipe and the air inlet pipe are connected with the grouting barrel, two annular air bags are respectively arranged at two ends of the outer side of the grouting barrel, one end of the grouting pipe extends out from the inner side wall of the grouting barrel, an extending port is positioned between the two annular air bags, the other end of the grouting pipe is connected with a grouting machine, one end of the air inlet pipe extends out from the inner side wall of the grouting barrel and then is communicated with the annular air bags, the other end of the air inlet pipe is connected with an air compressor, a traction hole is formed in the front end of the grouting barrel, and the outer peripheral diameter of the annular air bags is larger than or equal to the inner diameter of a pipeline after the annular air bags are inflated through the air inlet pipe. According to the invention, by arranging the grouting barrel, a relatively closed space can be formed around the pipeline leakage point, then slurry can flow out of the pipeline leakage point through grouting operation, and a leakage point plug is formed at the outer side of the pipeline, so that the effective repair of the small-diameter pipeline is completed. Simple structure, convenient operation, labour saving and time saving, greatly reduced pipeline repair cost.

Description

Grouting plugging device and method for repairing underground buried pipeline
Technical Field
The invention relates to the technical field of underground pipe network repair, in particular to a grouting plugging device and method for repairing an underground buried pipeline.
Background
Various underground pipelines are often distributed underground in urban, industrial, farm, port yard, etc. scenes, including sewage pipelines. The sewage drain pipeline is frequently washed by sewage, so that leakage can occur for a long time, and the leaked sewage can pollute the underground environment, so that the safety of the whole ground and underground facilities is affected. Therefore, the sewage pipes must be subjected to maintenance and repair treatment.
At present, two methods for repairing leaked sewage pipelines, especially small-diameter pipelines which cannot be accessed by workers, are available, namely excavation and migration pipelines. The excavation processing method is not only labor-consuming, but also limited by site conditions, especially in urban environments, can be influenced by road traffic, buildings or other buildings, cannot realize the excavation processing, and has great limitation. The pipeline is moved under the condition that the pipeline cannot be excavated, the original pipeline is abandoned, and the pipeline is processed by changing the pipeline mode, but the method takes long time and high cost, and the original pipeline is wasted.
It is apparent that the above-mentioned existing methods for repairing underground buried pipelines still have inconveniences and drawbacks, and further improvements are needed. How to create a new grouting plugging device and method for repairing an underground buried pipeline, so that the grouting plugging device and method can realize in-situ grouting plugging in the original pipeline, do not need to excavate and migrate pipelines, are simple and convenient, have low cost and low time consumption, are not influenced by ground surface space, have wide application range, and become the aim of urgent need improvement in the current industry.
Disclosure of Invention
The invention aims to solve the technical problem of providing a grouting plugging device for repairing an underground buried pipeline, which can realize in-situ grouting plugging in the original pipeline, is free from excavating and transferring pipelines, is simple and convenient, has low cost and less time consumption, is not influenced by surface space and has wide application range, thereby overcoming the defects of the existing method for repairing the underground buried pipeline.
In order to solve the technical problems, the invention provides a grouting plugging device for repairing an underground buried pipeline, which comprises a grouting barrel, grouting pipes and an air inlet pipe, wherein the grouting pipes and the air inlet pipe are connected with the grouting barrel, two ends of the outer side of the grouting barrel are respectively provided with an annular air bag, one end of each grouting pipe extends out of the inner side wall of the grouting barrel, an extending port is positioned between the two annular air bags, the other end of each grouting pipe extends out of the rear end of the grouting barrel and is used for being connected with a grouting machine, one end of each air inlet pipe extends out of the inner side wall of the grouting barrel and is communicated with the annular air bags, the other end of each air inlet pipe extends out of the rear end of the grouting barrel and is used for being connected with an air compressor or a water pump, the front end of each grouting barrel is provided with a traction hole used for being connected with a traction mechanism, the outer circumference diameter of each annular air bag is larger than or equal to the inner diameter of the underground buried pipeline after the annular air bags are inflated or filled with water through the air inlet pipe, and the outer circumference diameter of each annular air bag is smaller than the inner diameter of the underground buried pipeline after the annular air bags are decompressed through the pressure release valves.
Further improvement, the grouting pipe is provided with a first pressure gauge for monitoring grouting pressure; and a second pressure gauge is arranged on the air inlet pipe and used for monitoring the fluid pressure in the annular air bag.
Further improved, the grouting pipe is also provided with a first valve and a flowmeter, and the air inlet pipe is provided with a second valve.
Further improved, four baffle rings are arranged on the outer side wall of the grouting barrel, and the four baffle rings are respectively positioned on two sides of the two annular air bags in a group of two.
Further improved, the traction holes comprise at least two through holes uniformly distributed on the side wall of the front end of the grouting barrel or the front end cover plate, and/or,
the traction holes are also formed in the side wall of the rear end of the grouting barrel or the rear end cover plate.
Further improvement, the front end of the grouting barrel is provided with a camera, or,
cameras are mounted at the front end and the rear end of the grouting barrel.
As a further improvement of the present invention, the present invention also provides a grouting plugging method for repairing an underground buried pipeline, the method is implemented by the grouting plugging device for repairing an underground buried pipeline, and the method comprises: the grouting cylinder is placed into a buried pipeline to be repaired from an inspection well, the buried pipeline is pulled to a pipeline leakage point position through traction, the annular air bags are inflated or filled with water through the air inlet pipe, the annular air bags are in surface contact with the inner wall of the pipeline, a cavity surrounded by the outer wall of the grouting cylinder, the two annular air bags and the inner wall of the pipeline is formed, grouting operation is carried out in the cavity through the grouting pipe, slurry enters the outer side of the pipeline through the pipeline leakage point, the slurry is quickly initially set on the outer side of the pipeline, the pipeline leakage point is blocked, the annular air bags are decompressed before the slurry in the pipeline is not solidified, and the grouting cylinder is pulled out of the pipeline, so that the pipeline is repaired.
Further improved, the method also comprises the step of monitoring the grouting pressure in the grouting pipe, and is used for judging whether the grouting of the slurry to the pipeline leakage point is in place or not;
the method further comprises the step of monitoring the fluid pressure in the air inlet pipe to control the inflation state of the annular air bag.
Further improved, the method further comprises the step of monitoring grouting flow in the grouting pipe, and the step of assisting in judging whether grouting of the slurry to the pipeline leakage point is in place or not.
The method further comprises the step of accurately positioning the position of the pipeline leakage point by installing a camera at the front end of the grouting barrel; or,
still include through all install the camera at the front end and the rear end of slip casting barrel to observe the step of slip casting operation time the annular gasbag is leaked liquid.
With such a design, the invention has at least the following advantages:
1. the grouting plugging device for repairing underground buried pipelines can form a relatively closed space around pipeline leakage points by arranging the grouting cylinder capable of entering the repairing pipeline and arranging the annular air bags outside the grouting cylinder, then grouting operation can enable slurry to flow out of the pipeline leakage points, the slurry is quickly initially solidified outside the pipeline due to the influence of environment and temperature, such as the effect of external sand and stone media or the reduction of temperature, and the like, so that the plugging of the pipeline leakage points is formed, the annular air bags are decompressed before the slurry in the pipeline is not solidified, the grouting cylinder is pulled out of the pipeline, thus the effective repair of the underground buried small-diameter pipeline is completed, the problem that the personnel cannot enter the small-diameter pipeline leakage points is solved, the problems of labor and time waste of excavation and pipeline migration and great economic loss are avoided, and the method has great superiority. The grouting plugging device has the advantages of simple structure, convenient operation and low cost, can finish construction operation on the basis of the original inspection well and pipeline, saves time and labor, greatly reduces the pipeline repairing cost, provides a powerful auxiliary tool for repairing the existing underground buried pipeline, and has extremely excellent market prospect.
2. The grouting pressure in the grouting process can be better monitored through the arrangement of the first pressure gauge, and a basis is provided for accurately and reliably judging the grouting process; and the fluid pressure in the annular air bag can be better monitored through the arrangement of the second pressure gauge, so that a reliable basis is provided for accurately and reliably judging whether the annular air bag is inflated in place.
3. The setting of backing ring prevents that the slip casting barrel from breaking away from the barrel at the in-process annular gasbag that removes, guarantees the inflation position of annular gasbag. The grouting cylinder is convenient to pull through the manual or traction power mechanism through the traction rope by the traction hole, and is convenient and practical.
4. And the rotatable camera is arranged at the front end of the grouting barrel, so that the position of a pipeline leakage point can be accurately judged in the traction process of the grouting barrel, and the reliability of grouting operation is ensured. Still through all installing rotatable camera at the front end and the rear end of slip casting barrel, can realize the judgement whether the annular gasbag of slip casting in-process both sides leaks liquid at the judgement of slip casting in-process real-time observation on the basis of more accurate judgement pipeline leak source position, further promote slip casting operation's reliability.
5. The grouting plugging method for repairing the underground buried pipeline can accurately position the pipeline leakage point by utilizing the grouting plugging device, seals the pipeline leakage point in a cavity surrounded by the outer wall of the grouting cylinder, the two annular air bags and the inner wall of the pipeline, enables slurry to enter the outer side of the pipeline through the pipeline leakage point in a grouting mode, enables the slurry to be quickly initially set on the outer side of the pipeline due to the influence of environment and temperature, such as the effect of external media or the reduction of temperature and other factors, forms the plugging of the pipeline leakage point, and releases pressure to the annular air bags before the slurry in the pipeline is not solidified, and pulls the grouting cylinder out of the pipeline to complete the pipeline repair, thereby having great superiority, being scientific and reasonable in design, simple and convenient to operate, saving time and labor, avoiding the labor and time consuming operation of the pipeline excavation and migration needed by the existing method, greatly reducing the maintenance cost of the pipeline, being not influenced by the surface environment, and providing an extremely effective method for repairing the existing underground buried pipeline.
Drawings
The foregoing is merely an overview of the present invention, and the present invention is further described in detail below with reference to the accompanying drawings and detailed description.
FIG. 1 is a schematic diagram of a grouting plugging device for repairing underground buried pipelines.
Detailed Description
The grouting plugging device for repairing underground buried pipelines can repair pipeline leakage points by utilizing the manhole of the original pipeline on the basis of not changing the original pipeline facilities, has great superiority in repairing small-diameter pipelines which cannot be accessed by urban underground personnel, can greatly reduce economic losses caused by excavation treatment and pipeline migration, and has great market application prospect. Specific examples are as follows.
Referring to fig. 1, the grouting plugging device for repairing underground buried pipelines in the embodiment comprises a grouting barrel 1, a grouting pipe 11 and an air inlet pipe 12 connected with the grouting barrel, wherein annular air bags 13 are respectively arranged at two ends of the outer side of the grouting barrel 1. One end of the grouting pipe 11 extends from the inner side wall of the grouting barrel 1, an extending port is positioned between the two annular air bags 13, and the other end of the grouting pipe extends from the rear end opening of the grouting barrel 1 and is used for being connected with the grouting machine 2. One end of the air inlet pipe 12 extends out of the inner side wall of the grouting barrel 1 and then is communicated with the annular air bag 13, and the other end of the air inlet pipe extends out of the rear end opening of the grouting barrel 1 and is used for being connected with the air compressor 3. The air inlet pipe 12 is also provided with a pressure release valve 33 for realizing the discharge of air when the annular air bag 13 needs to release pressure, thereby meeting the movement of the grouting barrel 1. The front end of the grouting barrel 1 is also provided with a traction hole 14 for connecting with a traction mechanism. The outer diameter of the annular air bag 13 is larger than or equal to the inner diameter of the underground buried pipeline 10 after being inflated through the air inlet pipe 12, and the outer diameter of the annular air bag 13 is smaller than the inner diameter of the underground buried pipeline 10 after being depressurized through the pressure release valve 33.
The outer diameter of the grouting cylinder body 1 is 5-10cm smaller than the inner diameter of the underground buried pipeline 10. Thus, when the annular air bag 13 is not inflated, the grouting cylinder 1 can move inside the pipeline 10 and can move to the position of the pipeline leakage point 20 through the traction mechanism. When the annular air bags 13 are inflated, the annular air bags 13 on two sides fix the grouting barrel 1 in the pipeline to form a cavity 30 surrounded by the outer wall of the grouting barrel 1, the two annular air bags 13 and the inner wall of the pipeline 10, and the grouting outlet of the grouting pipe 11 and the pipeline leakage point 20 are communicated with the cavity 30, at the moment, grouting is carried out on the cavity 30 through the grouting pipe 11, slurry flows out to the outer side of the pipeline 10 through the pipeline leakage point 20, and the slurry can be quickly initially set on the outer side of the pipeline due to the influence of environment and temperature, such as the action of external sand and stone media or due to the factors such as temperature reduction, and the setting time of the slurry is shorter than the setting time of the slurry in the pipeline, so that once the slurry flows out to the outer side of the pipeline, no reflux is formed due to quicker setting, and the purpose of sealing the pipeline leakage point 20 is achieved. And then the gas in the annular air bag 13 is decompressed before the slurry in the pipeline is not solidified, and the grouting barrel 1 is pulled out of the pipeline through the traction mechanism, so that the repair of the pipeline leakage point is finished, and the method is convenient, quick, economical and practical.
In this embodiment, the grouting pipe 11 may be fixed inside the grouting barrel 1 by a radial connecting rod or a rear end cap plate disposed inside the grouting barrel 1, so as to ensure the relative fixation of the grouting pipe 11 and the grouting barrel 1. The grouting pipe 11 extends out of the rear end opening of the grouting barrel 1 and is connected with a pressure-resistant hose through a soft joint 24, so that the grouting barrel 1 is conveniently connected with an external grouting machine 2. The grouting machine 2 is connected with the stirrer 4 and is used for directly injecting slurry in the stirrer 4 into the cavity 30 through the grouting pipe 11. In this embodiment, the grouting machine 2 and the mixer 4 may be existing grouting equipment, and the grouting machine is directly placed on the ground during construction.
Likewise, in this embodiment, the air inlet pipe 12 may be fixed inside the grouting barrel 1 by a radial connecting rod or a rear end cover plate disposed inside the grouting barrel 1, so as to ensure the relative fixation of the air inlet pipe 12 and the grouting barrel 1. The air inlet pipe 12 extends out of the rear end opening of the grouting barrel 1 and is connected with a pressure-resistant hose through a soft joint 34, so that the grouting barrel 1 is conveniently connected with an external air compressor 3. In this embodiment, the air compressor 3 may be replaced by a water pump, and water is injected into the annular air bag 13 by the water pump, so that the annular air bag 13 can be inflated, and the fixation of the grouting cylinder 1 and the formation of the cavity 30 are satisfied. The air compressor 3 or the water pump can be directly placed on the ground during construction, and the construction method is convenient and practical.
In this embodiment, the end of the air inlet pipe 12 connected to the annular air bags 13 may be configured as a three-way pipe, where the first branch pipe and the second branch pipe extend from the inner side wall of the grouting barrel 1 and are respectively correspondingly communicated with the two annular air bags 13, and the third branch pipe extends from the rear end opening of the grouting barrel 1 and is connected to the pressure-resistant hose through the soft joint 34.
In a preferred embodiment, the grouting pipe 11 is provided with a first pressure gauge 21 for monitoring grouting pressure. When the grouting pressure becomes large and exceeds a preset value, the grouting machine 2 needs to be closed at the moment to stop grouting, and the grouting is indicated to be filled in the space outside the pipeline leakage point.
The grouting pipe 11 can be further provided with a first valve 22 and a flowmeter 23. The first valve 22 is used for controlling the grouting on-off of the grouting pipe 11. The flowmeter 23 is used for measuring the flow rate of the slurry flowing through the grouting pipe 11 in real time, and is used for assisting in judging whether the grouting of the pipeline leakage point 20 is in place or not, so that the start and stop control of grouting operation is facilitated.
In this embodiment, the air inlet pipe 12 is provided with a second pressure gauge 31 for monitoring the pressure of the air in the annular air bag 13, so as to control the inflation amount of the annular air bag 13.
The air inlet pipe 12 is provided with a second valve 32 for controlling the on-off of the air inlet pipe 12 so as to better control and maintain the inflation amount of the annular air bag 13.
In this embodiment, four baffle rings 15 are further fixed on the outer side wall of the grouting barrel 1, and the four baffle rings 15 are respectively located on two sides of the annular air bags 13 in a group by group manner, so that the annular air bags 13 are prevented from being separated from the barrel in the moving process of the grouting barrel 1, and the inflation position of the annular air bags 13 is ensured.
The traction holes 14 comprise at least two through holes, such as 3 or 4 through holes, uniformly distributed on the front side wall or the front cover plate 18 of the grouting barrel 1, so that the grouting barrel 1 can be more uniformly and stably pulled to move. Of course, the traction holes 14 are also formed on the rear end side wall or the rear end cover plate of the grouting barrel 1, so that the grouting barrel 1 can be pulled forwards or backwards, and the operation is more flexible.
In this embodiment, the grouting cylinder 1 may be pulled forward from the manhole at the other side of the pipeline by manual work through the pulling hole 14, or may be pulled to the position of the pipeline leakage point 20 by a traction power mechanism, such as a remote control trolley, which is simple and convenient.
In a more preferred embodiment, a camera 16 is mounted at the front end of the grouting barrel 1. The camera 16 is connected with the display 5 and the controller of the terminal in a wired or wireless mode, and is used for uploading the shot picture in time and receiving the control signal of the controller, so that an operator can know the internal condition of the pipeline, the position of the pipeline leakage point 20 can be positioned better, and favorable conditions are provided for grouting repair actions.
The camera 16 adopts the existing camera which can rotate by 360 degrees and is fixed by a fixed rod 17. The fixing rod 17 may be fixed by a radial link in the grouting cylinder 1, or may be fixed to a front end cover 18 of the grouting cylinder 1. The camera 16 is used for detecting the inner wall of the pipeline when the grouting barrel 1 moves forwards, so that the position of the pipeline leakage point 20 can be found conveniently, and a reference is provided for the moving distance of the grouting barrel 1. Of course, the detection of the position of the pipe leakage point 20 in this embodiment may be achieved by any other existing method, for example, after the pipe leakage point is located by a dedicated camera detection device, the towed distance of the grouting barrel 1 is determined according to the distance from the leakage point to the inspection well.
After the fixing of the pipeline leakage point 20 is completed, the camera 16 can also be controlled to rotate in a wireless manner, so that in the grouting operation process, whether slurry overflows between the annular air bag 13 at the front end of the grouting barrel 1 and the inner wall of the pipeline 10 or not can be observed, if so, the annular air bag 13 is not inflated in place, or the grouting is excessive, or the annular air bag 13 is damaged, the grouting problem can be found in time, and the grouting work is ensured to be normal.
In a more preferred embodiment, a camera is also installed at the rear end of the grouting barrel 1, so as to realize observation of whether liquid leakage occurs between the annular air bag 13 at the rear end of the grouting barrel 1 and the inner wall of the pipeline 10, and further ensure normal grouting operation.
By adopting the grouting plugging device, the grouting plugging method for repairing the underground buried pipeline is as follows: the grouting cylinder 1 is placed into an underground buried pipeline 10 to be repaired from an inspection well, the underground buried pipeline 10 is pulled to the position of a pipeline leakage point 20 through pulling, the annular air bag 13 is inflated through the air inlet pipe 12 to achieve surface contact between the annular air bag 13 and the inner wall of the pipeline 10, a cavity 30 surrounded by the outer wall of the grouting cylinder 1, the two annular air bags 13 and the inner wall of the pipeline 10 is formed, grouting operation is carried out on the cavity 30 through the grouting pipe 11, slurry enters the outer side of the pipeline through the pipeline leakage point, the slurry is quickly initially solidified with an external medium on the outer side of the pipeline 10 to form a blocking of the pipeline leakage point 20, the annular air bag 13 is decompressed before the slurry in the pipeline 10 is not solidified, and the grouting cylinder 1 is pulled out of the pipeline to finish pipeline repair.
The method further comprises the step of monitoring the grouting pressure in the grouting pipe 11 by a first pressure gauge 21 to judge whether the grouting of the grouting liquid to the pipeline leakage point 20 is in place or not, and closing the first valve 22 in time when the pressure reaches a preset value. The method further comprises the step of monitoring the grouting flow in the grouting pipe 11 through a flowmeter 23 so as to assist in judging whether the grouting of the pipe leakage point 20 is in place or not.
The method further comprises the step of monitoring the intake pressure in the intake pipe 12 by a second pressure gauge 31 to control the inflation state of the annular air bag 13, and closing the second valve 32 in time when the pressure reaches a preset value.
The method further comprises the step of accurately positioning the position of the pipeline leakage point 20 by installing a camera 16 at the front end of the grouting barrel 1. Or the method comprises the steps of installing cameras 16 at the front end and the rear end of the grouting barrel 1 so as to observe whether the two annular air bags 13 leak liquid or not during grouting operation, thereby greatly improving the reliability of grouting operation and ensuring the smooth grouting operation.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "front", "rear", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the invention in any way, and some simple modifications, equivalent variations or modifications can be made by those skilled in the art using the teachings disclosed herein, which fall within the scope of the present invention.

Claims (10)

1. The grouting leakage blocking device for repairing the underground buried pipeline is characterized by comprising a grouting barrel, grouting pipes and an air inlet pipe, wherein the grouting pipes and the air inlet pipe are connected with the grouting barrel, two annular air bags are respectively arranged at two ends of the outer side of the grouting barrel, one end of each grouting pipe extends out of the inner side wall of the grouting barrel, an extending port is arranged between the two annular air bags, the other end of each grouting pipe extends out of the rear end of the grouting barrel and is used for being connected with a grouting machine, one end of each air inlet pipe extends out of the inner side wall of the grouting barrel and is communicated with the annular air bags, the other end of each air inlet pipe extends out of the rear end of the grouting barrel and is used for being connected with an air compressor or a water pump, a pressure release valve is arranged on each air inlet pipe, the front end of each grouting barrel is provided with a traction hole used for being connected with a traction mechanism, the outer peripheral diameter of each annular air bag after the annular air bags are inflated or filled with water through the air inlet pipe is larger than the inner diameter of the underground buried pipeline, and the outer peripheral diameter of each annular air bag after the pressure release valve is smaller than the inner diameter of the underground buried pipeline.
2. The grouting plugging device for repairing an underground buried pipeline according to claim 1, wherein the grouting pipe is provided with a first pressure gauge for monitoring grouting pressure; and a second pressure gauge is arranged on the air inlet pipe and used for monitoring the fluid pressure in the annular air bag.
3. The grouting plugging device for repairing an underground buried pipeline according to claim 2, wherein the grouting pipe is further provided with a first valve and a flowmeter, and the air inlet pipe is provided with a second valve.
4. The grouting plugging device for repairing an underground buried pipeline according to claim 1, wherein four baffle rings are further arranged on the outer side wall of the grouting barrel body, and the four baffle rings are respectively arranged on two sides of the two annular air bags in a group.
5. The grouting plugging device for repairing an underground buried pipe according to claim 1, wherein the pulling holes comprise at least two through holes uniformly distributed on a front end sidewall or a front end cover plate of the grouting cylinder, and/or,
the traction holes are also formed in the side wall of the rear end of the grouting barrel or the rear end cover plate.
6. The grouting plugging device for repairing an underground buried pipeline according to any one of claims 1 to 5, wherein a camera is installed at the front end of the grouting cylinder, or,
cameras are mounted at the front end and the rear end of the grouting barrel.
7. A grouting plugging method for repairing an underground buried pipeline, characterized in that the method is realized by adopting the grouting plugging device for repairing an underground buried pipeline according to any one of claims 1 to 6, and the method comprises the following steps: the grouting cylinder is placed into a buried pipeline to be repaired from an inspection well, the buried pipeline is pulled to a pipeline leakage point position through traction, the annular air bags are inflated or filled with water through the air inlet pipe, the annular air bags are in surface contact with the inner wall of the pipeline, a cavity surrounded by the outer wall of the grouting cylinder, the two annular air bags and the inner wall of the pipeline is formed, grouting operation is carried out in the cavity through the grouting pipe, slurry enters the outer side of the pipeline through the pipeline leakage point, the slurry is quickly initially set on the outer side of the pipeline, the pipeline leakage point is blocked, the annular air bags are decompressed before the slurry in the pipeline is not solidified, and the grouting cylinder is pulled out of the pipeline, so that the pipeline is repaired.
8. The grouting plugging method for repairing an underground buried pipeline according to claim 7, further comprising the step of monitoring grouting pressure in the grouting pipe to determine whether grouting of the pipeline leakage point by the slurry is in place;
the method further comprises the step of monitoring the fluid pressure in the air inlet pipe to control the inflation state of the annular air bag.
9. A grouting plugging method for repairing an underground buried pipeline according to claim 8, further comprising the step of monitoring grouting flow in the grouting pipe to assist in determining whether grouting of the pipeline leak is in place.
10. The grouting plugging method for repairing an underground buried pipeline according to claim 8, further comprising the step of accurately positioning the position of a pipeline leakage point by installing a camera at the front end of the grouting barrel; or,
still include through all install the camera at the front end and the rear end of slip casting barrel to observe the step of slip casting operation time the annular gasbag is leaked liquid.
CN202310557536.2A 2023-05-17 2023-05-17 Grouting plugging device and method for repairing underground buried pipeline Pending CN116538375A (en)

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Application Number Priority Date Filing Date Title
CN202310557536.2A CN116538375A (en) 2023-05-17 2023-05-17 Grouting plugging device and method for repairing underground buried pipeline

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Application Number Priority Date Filing Date Title
CN202310557536.2A CN116538375A (en) 2023-05-17 2023-05-17 Grouting plugging device and method for repairing underground buried pipeline

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Publication Number Publication Date
CN116538375A true CN116538375A (en) 2023-08-04

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CN202310557536.2A Pending CN116538375A (en) 2023-05-17 2023-05-17 Grouting plugging device and method for repairing underground buried pipeline

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