CN117386925A - Non-excavation repairing device and method for buried water supply pipeline - Google Patents

Non-excavation repairing device and method for buried water supply pipeline Download PDF

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Publication number
CN117386925A
CN117386925A CN202311527440.8A CN202311527440A CN117386925A CN 117386925 A CN117386925 A CN 117386925A CN 202311527440 A CN202311527440 A CN 202311527440A CN 117386925 A CN117386925 A CN 117386925A
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CN
China
Prior art keywords
lining pipe
pipe
lining
reel
pipeline
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311527440.8A
Other languages
Chinese (zh)
Inventor
遆仲森
廖宝勇
朱志英
王清顺
陈毅斌
卢南强
朱庆忠
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Anyue Environmental Technology Co ltd
Original Assignee
Anyue Environmental Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anyue Environmental Technology Co ltd filed Critical Anyue Environmental Technology Co ltd
Priority to CN202311527440.8A priority Critical patent/CN117386925A/en
Publication of CN117386925A publication Critical patent/CN117386925A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
    • F16L55/1652—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the flexible liner being pulled into the damaged section
    • F16L55/1654—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the flexible liner being pulled into the damaged section and being inflated
    • 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
    • F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
    • F16L55/1651—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the flexible liner being everted
    • 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
    • F16L55/18—Appliances for use in repairing pipes
    • 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
    • F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
    • F16L55/28—Constructional aspects
    • 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
    • F16L2101/00—Uses or applications of pigs or moles
    • F16L2101/10—Treating the inside of pipes
    • F16L2101/12—Cleaning

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The invention provides a non-excavation repairing device and a non-excavation repairing method for a buried water supply pipeline, wherein the repairing device comprises a lining pipe reel, a lining pipe, a pipeline lifting device and a pipeline lifting device, wherein the lining pipe reel is used for winding and transporting a lining pipe with an I-shaped section extruded by the lining pipe reel; the steam generator is used for heating and softening the lining pipe with the cross section extruded in an I shape; the air bag is used for rounding the softened lining pipe with the cross section extruded in an I shape to form the lining pipe with the round end face; the hot-melt welding device is used for welding and connecting two sections of lining pipes with round end surfaces; the compression roller device is used for extruding the softened lining pipe with the round end face to form the lining pipe with the I-shaped section; the repairing step comprises the step of repairing the welding length of the lining pipe with the cross section extruded in an I shape until the pulled lining pipe reaches the repairing length of the broken pipe.

Description

Non-excavation repairing device and method for buried water supply pipeline
Technical Field
The invention relates to the technical field of mouth trenchless pipeline repair, in particular to a trenchless repair device and method for a buried water supply pipeline.
Background
The existing buried water supply pipeline has the defects of scaling, pipe explosion and the like after being used for many years, and seriously influences the normal life of urban residents. The water supply pipeline is a pressure pipeline, the requirements on the performance of repair on sanitation, size, strength and the like of materials are strict, the existing repair technology comprises a stainless steel lining repair technology, a folding lining repair technology and the like, and the repair is difficult to realize the close fit with the original pipeline.
It is particularly common that during repair, due to: the length of the lining pipe material of the single reel is limited, the problem of insufficient length exists in the non-excavation lining repair construction of long distance and ultra-long distance, the method adopted generally is that after the lining pipe is placed in the original pipeline and is in butt joint with the previous lining pipe, after the whole length is paved, a person or a welding vehicle enters the pipeline to weld and connect two or more butt joint pipelines, and the operation is complex and the labor is extremely consumed.
Disclosure of Invention
The invention aims to solve the main technical problem of providing a non-excavation repairing device and method for buried water supply pipelines, which can solve the problem that the lining material is not insufficient in length when the lining pipe is used for repairing the lining of the ultra-long pipeline.
In order to solve the technical problems, the invention provides a trenchless repairing device for buried water supply pipeline, comprising
The lining pipe reel is used for winding and transporting lining pipes with the cross sections extruded in an I shape;
the steam generator is used for heating and softening the lining pipe with the cross section extruded in an I shape;
the air bag is used for rounding the softened lining pipe with the cross section extruded in an I shape to form the lining pipe with the round end face;
the hot-melt welding device is used for welding and connecting two sections of lining pipes with round end surfaces;
the compression roller device is used for extruding the softened lining pipe with the round end face to form the lining pipe with the I-shaped section;
the hot-melt welding device comprises two annular clamps and a heating plate which are oppositely arranged; the two ring clamps are configured to move toward or away from each other; the heating plate is configured to move up and down and is arranged between the two annular clamps in a descending manner;
the compression roller device is arranged on one side of the annular clamp, which is away from the heating plate; the two annular clamps are used for respectively clamping ports of the lining pipe with the round end faces rounded by the air bags; and delivering the port to the heating plate for hot melting;
and after the port is hot melted, the heating plate is lifted, and the two annular clamps are further conveyed to the two hot melted ports for mutual extrusion butt joint.
In a preferred embodiment, the lining pipe reel consists of a reel frame and a reel; the reel is supported on the reel frame through a bearing shaft;
the reel comprises an inner frame and an outer frame connected to the outer side of the inner frame, and the diameter difference between the inner frame and the outer frame forms the volume of the reel which can be reeled by the lining pipe.
In a preferred embodiment, one end of the bearing shaft is provided with a universal joint with a built-in gas channel, and the gas channel is used for connecting the steam generator;
the inner frame is provided with a locking piece near the universal joint and used for locking the terminal end of the wound lining pipe on the inner frame; and a steam inlet is formed at the rear end of the terminal and communicated with the gas channel.
In a preferred embodiment, the press roll device comprises a transverse press roll and a longitudinal press roll; the transverse press rollers or the longitudinal press rollers are symmetrically arranged on two sides of the lining pipe, and at least one group of transverse press rollers and at least one group of longitudinal press rollers are arranged on one side of the lining pipe.
In a preferred embodiment, the compression roller device is provided with a transverse compression roller and a longitudinal compression roller in sequence along the pulling direction of the lining pipe.
In a preferred embodiment, the hot-melt welding device comprises a hydraulic cylinder for driving the two annular clamps to move towards or away from each other.
A non-excavation repairing method of a buried water supply pipeline is applied to the non-excavation repairing device of the buried water supply pipeline;
the digging repair method comprises the following steps:
step 1, pipe breaking treatment and flange plate installation at the port of the broken pipe; cleaning the inside of the broken pipe by using a cleaning vehicle;
step 2, heating and softening the lining pipe with the cross section extruded in an I shape on a lining pipe reel wound with the lining pipe; filling and plugging is carried out at one port of the lining pipe with the cross section extruded in an I shape, wherein the one port is a terminal of the lining pipe wound on the lining pipe reel; the rear end of the port is provided with a steam inlet which is communicated with the steam generator so as to be heated and softened by introducing steam;
step 3, pulling the lining tube for the first time; pulling the lining pipe with the cross section extruded in the shape of an I after being heated and softened into the pipeline of the broken pipe to be repaired until the lining pipe on the lining pipe reel is completely pulled;
step 4, welding and supplementing the lining pipe with the cross section extruded in an I shape; continuously heating and softening the terminal end of the lining pipe with the cross section extruded in the I shape, which is dragged into the pipeline to be repaired, by using another steam generator, repeating the step 2, respectively plugging a gas bag into the starting end and the terminal end of the lining pipe with the new cross section extruded in the I shape for port rounding and end face flattening treatment, and welding the terminal end and the starting end by using a hot melt welding device;
step 5, introducing steam through a gas channel on the lining pipe reel, heating and softening the lining pipe with the round end face after welding connection, and then pulling the lining pipe for the second time, wherein the lining pipe is extruded by a compression roller device to form the lining pipe with the I-shaped section; continuously pulling the lining pipe into the pipeline to be repaired, and repeating the steps 4 and 5 until the pulled lining pipe reaches the repair length of the broken pipe;
step 6, recovering the section extruded into the pipeline to be repaired into an I-shaped lining pipe; after the two ends of the lining pipe are locally heated and softened, the air filling plugs are plugged into the lining pipe, steam is introduced into the lining pipe through the air filling plugs, and after the lining pipe is softened, the steam heating is stopped; then other gases are introduced into the lining pipe through the air filling plug to pressurize the lining pipe until the lining pipe clings to the original pipeline; after maintaining the pressure for a certain time, converting the steam into cold air to cool the lining pipe;
step 7, removing the air filling plug after the lining pipe is cooled, and flanging the ports of the lining pipe at the two ends of the pipeline to be repaired; flanging the lining pipe onto a flange plate installed before;
step 8, recovering broken pipes: the broken pipe is connected by a broken pipe with a flange and an expansion joint or an expansion joint.
In a preferred embodiment, in step 1, steel sheet piles are used for supporting after pipe breakage; and the length of the broken pipe is set between 2m and 3m.
In a preferred embodiment, in step 1, the cleaning vehicle is cleaned with ultra-high pressure water, mechanical cleaning or sandblasting.
In a preferred embodiment, a vent hole and an air charging hole are arranged in the middle of the air charging plug; the vent holes are used for being connected with the steam softening lining pipe; the inflation hole is used for inflating the plug and introducing pressurized gas.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1. the invention provides a non-excavation repair method, which can realize infinite length repair of lining pipes required by repair in the pipeline repair process, solves the problems that the length of the lining pipes of a single reel is limited, and the length is insufficient in the non-excavation lining repair construction of long distances and ultra-long distances, and does not trouble the length of the lining materials when the lining pipes are used for ultra-long pipeline lining repair construction.
2. The invention provides a non-excavation repair device which comprises an air bag, a hot-melt welding device and a compression roller device, wherein the butt joint length repairing operation of an inner liner tube can be realized before the inner liner tube is pulled into a pipeline, the repaired inner liner tube still can keep an I-shaped structure of end face extrusion, the subsequent operation of rounding and restoring the inner liner tube in the pipeline to be repaired is ensured, and the I-shaped structure of the end face extrusion of the inner liner tube is kept after the length repairing operation, so that the operation of pulling into the pipeline by a second inner liner tube is not influenced.
Drawings
FIG. 1 is an elevation view of a liner reel in accordance with a preferred embodiment of the present invention;
FIG. 2 is a cross-sectional view of A-A of FIG. 1;
FIG. 3 is a side view of a liner reel in accordance with a preferred embodiment of the present invention;
FIG. 4 is a cross-sectional view of C-C of FIG. 3;
FIG. 5 is a front view of a hot melt welding apparatus and a press roll apparatus in accordance with a preferred embodiment of the present invention;
FIG. 6 is a schematic view of a circular end face liner clamp on a hot melt welding apparatus according to a preferred embodiment of the present invention;
FIG. 7 is a schematic view of the butt joint structure of a lining pipe with two sections of round end surfaces in the preferred embodiment of the invention;
fig. 8-13 are schematic views of field steps of a trenchless rehabilitation method in accordance with a preferred embodiment of the present invention.
Reference numerals illustrate: 1. a liner reel; 11. a reel rack; 12. a reel; 121. an inner frame; 122. an outer frame; 13. a bearing shaft; 14. a universal joint; 15. a gas channel; 16. a locking member; 17. a filler material; 2. a steam generator; 3. a hot melt welding device; 31. an annular clamp; 32. a heating plate; 33. a hydraulic cylinder; 34. a hydraulic station; 4. a press roll device; 41. a transverse press roll; 42. a longitudinal press roll; 5. an inner liner tube; 51. extruding the section of the lining pipe in an I shape; 52. a lining pipe with a round end surface; 53. a steam inlet; 6. a flange plate; 7. cleaning vehicle; 8. an expansion joint.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship 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 elements 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. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," configured to, "" engaged with, "" connected to, "and the like are to be construed broadly, and may be, for example," connected to, "wall-mounted," connected to, removably connected to, or integrally connected to, mechanically connected to, electrically connected to, directly connected to, or indirectly connected to, through an intermediary, and may be in communication with each other between two elements, as will be apparent to those of ordinary skill in the art, in view of the detailed description of the terms herein.
Referring to fig. 1 to 7, the present embodiment provides a trenchless rehabilitation device and method for buried water supply pipelines, which mainly aims to solve the problem of insufficient length in trenchless liner rehabilitation construction for long and ultra-long distances due to limited material length of the liner tube 5 of the single reel 12.
The trenchless rehabilitation device according to the present embodiment includes
A liner reel 1 for winding and transporting a liner tube 51 having an extruded section in an I shape;
a steam generator 2 for heating and softening the lining pipe 51 with the cross section extruded in an I shape;
an air bag for rounding the inner lining pipe 51 with the softened cross section extruded in an I shape to form an inner lining pipe 52 with a round end face;
the hot-melt welding device 3 is used for welding and connecting two sections of lining pipes 52 with round end surfaces;
and the compression roller device 4 is used for extruding the softened lining pipe 52 with the round end surface to form the lining pipe 51 with the I-shaped extruded section.
Wherein, the hot-melt welding device 3 comprises two annular clamps 31 and a heating plate 32 which are oppositely arranged; the two ring clamps 31 are configured to have a movement toward or away from each other; the heating plate 32 is configured to be movable up and down, and is disposed between the two ring jigs 31. In this embodiment, the hot-melt welding apparatus 3 includes a hydraulic cylinder 33 for driving the two ring jigs 31 to move toward or away from each other. The hydraulic cylinder 33 communicates with the hydraulic station 34, and the hydraulic driving force is provided by the hydraulic station 34.
The press roll device 4 is arranged on one side of the ring clamp 31 facing away from the heating plate 32; the two annular clamps 31 are used for respectively clamping ports of the lining pipe 52 with the round end faces rounded by the air bags; and carries the port to the heating plate 32 for heat fusion; after the port is hot melted, the heating plate 32 is lifted, and the two ring clamps 31 are further conveyed to the two hot melted ports for mutual extrusion butt joint.
Specifically, the press roll device 4 includes a transverse press roll 41 and a longitudinal press roll 42; the transverse press rollers 41 or the longitudinal press rollers 42 are symmetrically arranged on two sides of the lining pipe 5, at least one group of the transverse press rollers 41 and the longitudinal press rollers 42 are arranged on one side of the lining pipe 5, and the transverse press rollers 41 and the longitudinal press rollers 42 are sequentially arranged on the press roller device 4 along the pulling direction of the lining pipe 5.
The lining pipe reel 1 consists of a reel frame 11 and a reel 12; the reel 12 is supported on the reel frame 11 through a bearing shaft 13; the reel 12 includes an inner frame 121 and an outer frame 122 connected to the outside of the inner frame 121, and the difference in diameter between the inner frame 121 and the outer frame 122 constitutes the volume of the liner tube 5 that can be wound up into the reel 12.
Specifically, one end of the bearing shaft 13 is provided with a universal joint 14 with a built-in gas channel 15, and the gas channel 15 is used for connecting the steam generator 2; the inner frame 121 is provided with a locking member 16 near the universal joint 14 for locking the terminal end of the wrapped liner tube 5 to the inner frame 121; and a steam inlet 53 is formed at the rear end of the terminal to communicate with the gas passage 15.
The trenchless repairing method for buried water supply pipeline provided in this embodiment, as shown in fig. 8-13, comprises the following steps:
step 1, pipe breaking treatment and flange 6 installation at the port of the broken pipe; and cleaning the inside of the broken pipe by using a cleaning vehicle.
In step 1, pipe breaking treatment: because the water supply pipe is long in distance and there are many bends and branch pipe sections, pipe breakage must be performed before repair. Steel sheet piles are required to be adopted for supporting in the process of excavating the working foundation pit, and the length of a broken pipe is generally 2-3m.
For the pipeline connection after the repair is completed in the aspect after the pipe breakage is completed, the flange plate 6 is required to be installed at the port, the flange plate 6 can be installed in a welded mode for a steel pipeline, and for a non-steel pipeline, the flange plate 6 is required to be divided into two pieces and welded on a pipe piece respectively, and the flange plate is connected with the original pipeline in a hoop mode.
The cleaning vehicle 7 is adopted to clean the scale in the pipeline, and ultra-high pressure water cleaning, mechanical cleaning or sand blasting cleaning is selected according to the site situation.
Step 2, heating and softening the lining pipe 51 with the cross section extruded in an I shape on the lining pipe reel 1 around which the lining pipe 5 is wound; filling and plugging is carried out at one port of the lining pipe 51 with the cross section extruded in an I shape, wherein the one port is a terminal end of the lining pipe 5 wound on the lining pipe reel 1; and a steam inlet 53 is formed at the rear end of the port and is communicated with the steam generator 2 so as to be heated and softened by introducing steam.
In step 2, including the preparation of material, factory equipment produces extruded liner 5 and extrudes its cross-section in an "I" shape, wound onto liner reel 12. Liner reel 12 is composed of reel frame 11 and reel 12, reel 12 is supported on reel frame 11 by bearing shaft 13; one end of the bearing shaft 13 is provided with a universal joint 14, and a gas channel 15 is arranged in the universal joint 14; the reel 12 is divided into an inner frame 122 and an outer frame 122, the inner frame 121 of the reel 12 connects the outer frames 122 on both sides as a whole, and the outer frames 122 prevent the material of the lining tube 5 coiled outside the inner frame 121 from slipping. The difference in diameter between the outer frame 122 and the inner frame 121, therefore, determines the volume of liner tube 5 material that the spool 12 can be coiled to accommodate.
Before the lining pipe 5 is heated and softened, the port of the lining pipe 5 is plugged with a foaming filling material 17 to block the port. This end is then fastened and locked in a double-fastened manner inside the inner frame 121 of the reel 12 by two square tubes fitted with long bolts (i.e., locking members 16) to the inner circumference of the inner frame 121 of the reel 12. A round opening is formed at the rear section to lock a section of metal steam inlet pipe as a steam inlet 53 for internal heating, and the steam inlet 53 is communicated with the gas channel 15.
The wood board can be arranged on the outer side of the inner frame 121 of the reel 12 to reduce friction damage between the outer surface of the lining pipe 5 and square pipes forming the inner frame 121 of the reel 12 and embossing caused by fitting the square pipes.
Step 3, during construction, the lining pipe 5 is pulled for the first time; the steam conveying pipeline of the steam generator 2 is connected to the air inlet of the universal joint 14 on the lining pipe reel 1, and the inside of the lining pipe 5 is heated after the steam is introduced; after the lining pipe 5 is softened, the lining pipe 51 with the cross section extruded into an I shape after being heated and softened is pulled into the pipeline of the broken pipe to be repaired, and the lining pipe 5 is continuously heated in the pulling process of the lining pipe 5, so that the fact that the lining pipe 5 cannot be pulled into the pipeline after being cooled is prevented until the lining pipe 5 on the lining pipe reel 1 is completely pulled is avoided.
Step 4, welding and supplementing the lining pipe 51 with the cross section extruded in an I shape; and (3) continuously heating and softening the terminal end of the lining pipe 51 with the cross section extruded in the I shape by using the other steam generator 2, repeating the step (2), respectively filling a gas bag into the starting end and the terminal end of the lining pipe 51 with the new cross section extruded in the I shape for port rounding and end face flattening treatment, and welding and connecting the terminal end and the starting end by using the hot-melt welding device 3.
In step 4, the lining tube 5 is hot-melt welded: after the first disc lining pipe reel 1 is pulled, the tail end of the lining pipe 5 drawn into the pipeline to be repaired and the front end of the other reel 12 are heated by hot air, and the material is softened and plugged into the round and cut flat end face of the airbag of the same model. And cooling and shaping the material of the lining tube 5, and taking out the air bag. The rounded pipe ends are respectively hung to the corresponding positions of the hot-melt welding device 3 by a small crane, and are clamped and fixed by an annular clamp 31. The heating plate 32 of the hot-melt welding device 3 heats the annular end surface of the lining tube 5 material which is blow molded into a circular shape and fixed to the hot-melt welding device 3. The melting phenomenon is visible at the position to be heated, and the hot-melt welding device 3 is controlled to lift the heating plate 32, so that the melted annular end faces are extruded and butted in the middle. And opening the clamp to check whether water and air leakage exist in the welding of the welding section, and if not, flattening the surface treatment of the welding part.
Step 5, introducing steam through a gas channel 15 on the lining pipe reel 1, heating and softening the lining pipe 52 with the round end face after welding connection, then pulling the lining pipe 5 for the second time, and extruding the lining pipe 5 through a compression roller device 4 to form the lining pipe 51 with the I-shaped section; and (5) continuing to pull the lining pipe 5 into the pipeline to be repaired, and repeating the steps (4) and (5) until the pulled lining pipe 5 reaches the repair length of the broken pipe.
In step 5, the liner tube 5 is pulled a second time: changing the clamps at the two ends of the hot-melt welding device 3, changing the compression roller device 4 for folding the lining material, introducing the steam pipe on the steam generator 2 into the steam inlet 53 on the new reel 12, continuously heating the inside of the lining pipe 5, and continuously dragging the material into the pipeline to be repaired after the material is softened. The softened lining tube 5 material is pulled to pass through a transverse press roller 41 and a longitudinal press roller 42 of the press roller device 4 to be shaped, so that the section of the lining tube 5 material is folded back to the original I shape, then the hot-melt welding device 3 is removed, and the lining tube 5 is pulled into the pipeline to be repaired continuously. If the length of the roll is insufficient, the material of the lower liner tube 5 is continuously welded and lengthened until the repair length is reached.
Step 6, recovering the section extruded into the pipeline to be repaired into an I-shaped lining pipe 5; after the two ends of the lining pipe 5 are locally heated and softened, filling an air filling plug, introducing steam into the lining pipe 5 through the air filling plug, and stopping heating the steam after the lining pipe 5 is softened; then other gases are introduced into the lining pipe 5 through the air filling plug to pressurize until the lining pipe 5 clings to the original pipeline; after maintaining the pressure for a certain time, the steam is converted into cool air to cool the inner liner 5.
In step 6, the liner 5 is restored: after the lining pipe 5 is pulled into the lining pipe 5 channel, the two ends of the lining pipe 5 are cut off redundant lining pipe 5, the two ends of the lining pipe 5 are locally heated, and after the end head materials are softened, the air filling plugs are filled. The middle of the air filling plug is provided with an air vent and an air filling hole, the air vent is positioned in the middle of the air filling plug and used for subsequently introducing steam into the hose, and the air filling hole is used for pressurizing and expanding the air filling plug. The pressure is applied by inflating the inflation holes of the inflation plug to form local protrusions at both ends of the softened liner tube 5, and the pressure in the inflation plug is maintained. After the liner tube is cooled, the steam tube of the steam generator 2 is connected with the vent hole of the air filling plug, steam is continuously introduced into the liner tube 5 to continuously heat the liner tube 5, after the liner tube 5 is softened, the steam valve is gradually closed, the liner tube 5 is pressurized until the liner tube 5 is tightly attached to the original pipeline, and after the pressure is maintained for a certain time, the steam is converted into cold air to cool the liner tube 5.
Step 7, removing the air-filled plugs after cooling the lining pipe 5, and flanging the ports of the lining pipe 5 at the two ends of the pipeline to be repaired; the liner tube 5 is flanged onto the previously installed flange 6.
In step 7, port flanging: after the lining pipe 5 is in a cold area, the inflatable plugs at the two ends are removed, and a special flanging tool is used for flanging the lining pipe 5 at the two ends, so that the lining pipe 5 is flanged onto the flange 6 which is installed before.
Step 8, recovering broken pipes: the broken pipe is connected by a broken pipe with a flange and an expansion joint or an expansion joint 8.
In step 8, the pipe break is recovered: the broken pipe is connected by a broken pipe with a flange and an expansion joint or an expansion joint 8. And (3) performing a pressurizing test on the repaired pipeline, and after the pipeline is qualified, backfilling the working pit and the pit to be inspected, and arranging an inspection well at the backfill working pit.
According to the trenchless repairing method for the buried water supply pipeline, which is provided by the embodiment, the problem of insufficient length of lining materials is not bothered when the lining pipe 5 is used for repairing the lining of the overlength pipeline.
The foregoing is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any person skilled in the art will be able to make insubstantial modifications of the present invention within the scope of the present invention disclosed herein by this concept, which falls within the actions of invading the protection scope of the present invention.

Claims (10)

1. The utility model provides a non-excavation prosthetic devices of buried water supply pipeline which characterized in that: comprising
The lining pipe reel is used for winding and transporting lining pipes with the cross sections extruded in an I shape;
the steam generator is used for heating and softening the lining pipe with the cross section extruded in an I shape;
the air bag is used for rounding the softened lining pipe with the cross section extruded in an I shape to form the lining pipe with the round end face;
the hot-melt welding device is used for welding and connecting two sections of lining pipes with round end surfaces;
the compression roller device is used for extruding the softened lining pipe with the round end face to form the lining pipe with the I-shaped section;
the hot-melt welding device comprises two annular clamps and a heating plate which are oppositely arranged; the two ring clamps are configured to move toward or away from each other; the heating plate is configured to move up and down and is arranged between the two annular clamps in a descending manner;
the compression roller device is arranged on one side of the annular clamp, which is away from the heating plate; the two annular clamps are used for respectively clamping ports of the lining pipe with the round end faces rounded by the air bags; and delivering the port to the heating plate for hot melting;
and after the port is hot melted, the heating plate is lifted, and the two annular clamps are further conveyed to the two hot melted ports for mutual extrusion butt joint.
2. A non-excavation repair apparatus for a buried water supply pipe according to claim 1, wherein: the lining pipe reel consists of a reel frame and a reel; the reel is supported on the reel frame through a bearing shaft;
the reel comprises an inner frame and an outer frame connected to the outer side of the inner frame, and the diameter difference between the inner frame and the outer frame forms the volume of the reel which can be reeled by the lining pipe.
3. A non-excavation repair apparatus for a buried water supply pipe according to claim 2, wherein: one end of the bearing shaft is provided with a universal joint with a built-in gas channel, and the gas channel is used for connecting the steam generator;
the inner frame is provided with a locking piece near the universal joint and used for locking the terminal end of the wound lining pipe on the inner frame; and a steam inlet is formed at the rear end of the terminal and communicated with the gas channel.
4. A non-excavation repair apparatus for a buried water supply pipe according to claim 1, wherein: the press roll device comprises a transverse press roll and a longitudinal press roll; the transverse press rollers or the longitudinal press rollers are symmetrically arranged on two sides of the lining pipe, and at least one group of transverse press rollers and at least one group of longitudinal press rollers are arranged on one side of the lining pipe.
5. A non-excavation repair apparatus for a buried water supply pipe as set forth in claim 4, wherein: the compression roller device is provided with a transverse compression roller and a longitudinal compression roller in sequence along the pulling direction of the lining pipe.
6. A non-excavation repair apparatus for a buried water supply pipe according to claim 1, wherein: the hot-melt welding device comprises a hydraulic oil cylinder which is used for driving the two annular clamps to move towards or away from each other.
7. A non-excavation repair method for buried water supply pipelines is characterized by comprising the following steps: use of a trenchless rehabilitation device for buried water supply pipelines according to any of claims 1 to 6;
the digging repair method comprises the following steps:
step 1, pipe breaking treatment and flange plate installation at the port of the broken pipe; cleaning the inside of the broken pipe by using a cleaning vehicle;
step 2, heating and softening the lining pipe with the cross section extruded in an I shape on a lining pipe reel wound with the lining pipe; filling and plugging is carried out at one port of the lining pipe with the cross section extruded in an I shape, wherein the one port is a terminal of the lining pipe wound on the lining pipe reel; the rear end of the port is provided with a steam inlet which is communicated with the steam generator so as to be heated and softened by introducing steam;
step 3, pulling the lining tube for the first time; pulling the lining pipe with the cross section extruded in the shape of an I after being heated and softened into the pipeline of the broken pipe to be repaired until the lining pipe on the lining pipe reel is completely pulled;
step 4, welding and supplementing the lining pipe with the cross section extruded in an I shape; continuously heating and softening the terminal end of the lining pipe with the cross section extruded in the I shape, which is dragged into the pipeline to be repaired, by using another steam generator, repeating the step 2, respectively plugging a gas bag into the starting end and the terminal end of the lining pipe with the new cross section extruded in the I shape for port rounding and end face flattening treatment, and welding the terminal end and the starting end by using a hot melt welding device;
step 5, introducing steam through a gas channel on the lining pipe reel, heating and softening the lining pipe with the round end face after welding connection, and then pulling the lining pipe for the second time, wherein the lining pipe is extruded by a compression roller device to form the lining pipe with the I-shaped section; continuously pulling the lining pipe into the pipeline to be repaired, and repeating the steps 4 and 5 until the pulled lining pipe reaches the repair length of the broken pipe;
step 6, recovering the section extruded into the pipeline to be repaired into an I-shaped lining pipe; after the two ends of the lining pipe are locally heated and softened, the air filling plugs are plugged into the lining pipe, steam is introduced into the lining pipe through the air filling plugs, and after the lining pipe is softened, the steam heating is stopped; then other gases are introduced into the lining pipe through the air filling plug to pressurize the lining pipe until the lining pipe clings to the original pipeline; after maintaining the pressure for a certain time, converting the steam into cold air to cool the lining pipe;
step 7, removing the air filling plug after the lining pipe is cooled, and flanging the ports of the lining pipe at the two ends of the pipeline to be repaired; flanging the lining pipe onto a flange plate installed before;
step 8, recovering broken pipes: the broken pipe is connected by a broken pipe with a flange and an expansion joint or an expansion joint.
8. A method of trenchless rehabilitation of a buried water supply pipeline as set forth in claim 7 wherein: in the step 1, supporting by steel sheet piles after pipe breaking; and the length of the broken pipe is set between 2m and 3m.
9. A method of trenchless rehabilitation of a buried water supply pipeline as set forth in claim 7 wherein: in the step 1, the cleaning vehicle adopts ultra-high pressure water cleaning or mechanical cleaning or sand blasting cleaning.
10. A method of trenchless rehabilitation of a buried water supply pipeline as set forth in claim 7 wherein: the middle of the inflatable plug is provided with a vent hole and an inflation hole; the vent holes are used for being connected with the steam softening lining pipe; the inflation hole is used for inflating the plug and introducing pressurized gas.
CN202311527440.8A 2023-11-16 2023-11-16 Non-excavation repairing device and method for buried water supply pipeline Pending CN117386925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311527440.8A CN117386925A (en) 2023-11-16 2023-11-16 Non-excavation repairing device and method for buried water supply pipeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311527440.8A CN117386925A (en) 2023-11-16 2023-11-16 Non-excavation repairing device and method for buried water supply pipeline

Publications (1)

Publication Number Publication Date
CN117386925A true CN117386925A (en) 2024-01-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311527440.8A Pending CN117386925A (en) 2023-11-16 2023-11-16 Non-excavation repairing device and method for buried water supply pipeline

Country Status (1)

Country Link
CN (1) CN117386925A (en)

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