CN108468901A - Jacketed tubular type pipeline craft leakage mending method in one kind - Google Patents
Jacketed tubular type pipeline craft leakage mending method in one kind Download PDFInfo
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- CN108468901A CN108468901A CN201810234597.4A CN201810234597A CN108468901A CN 108468901 A CN108468901 A CN 108468901A CN 201810234597 A CN201810234597 A CN 201810234597A CN 108468901 A CN108468901 A CN 108468901A
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- Prior art keywords
- pipeline
- wall
- casing
- tube head
- tubular type
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Classifications
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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
- F16L55/165—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
- F16L55/1653—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 pressed into contact with the pipe by a tool which moves inside along the pipe
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses jacketed tubular type pipeline craft leakage mending methods in one kind, repair leak site using from pipeline inner wall, including take one section of C-shaped openning shape in its section of flexible casing；In the inside and outside wall coating hot-melt adhesive equipped with C openning shape casings, then by its with have it is magnetic send tube head to bond together, with the outer wall of clamp gripping sleeve when bonding, one end of tube head will be sent to be connect with flexible axle；It is provided with magnetic induction sensor near the outer wall of leaking position of pipeline and is connect with controller；With flexible axle by be bonded with casing send tube head be sent into pipeline, after magnetic induction sensor sends out signal by controller；Pipeline outer wall is heated, pass through the heating to pipeline outer wall, its heat is set to pass to the inner wall of pipeline, then by the inside and outside portion of pipeline by coated in the hotmelt melts on sleeve outer wall, casing reverts to C openning shapes under the action of elasticity and tube head is sent to be detached from and be pasted onto on the inner wall of pipeline；Tube head will will be sent to be taken out out of pipeline by flexible axle.
Description
Technical field
The present invention relates to piping failure restorative procedure technical fields, and in particular to it is a kind of can rapidly and efficiently pipe-repairing it is interior
Jacketed tubular type pipeline craft leakage mending method.
Background technology
General pipeline gas leakage repairing is needed to air leak position after pipeline stops vapour, and external from pipeline carries out repair welding.
Currently, when damaged leakage occurs for various pipes, generally its damaged position is repaiied using from the outside of pipeline
It mends.But most of pipeline is suitable for gas or liquid of the conveying with certain pressure, in pipeline air pressure inside or the pressure of hydraulic pressure
Under force effect, the damaged part after being repaired can reappear breakage, or even will produce the breakage more introduced a fine variety.In addition from pipeline
Damaged position is repaired in outside, needs to realize and is cleaned, polished to the outer wall of pipeline.Certainly will return in this way makes its surface
Certain damage is caused, and there are many very intensive of conduit arrangements, is not easy to clean it, or even be not easy to it
It is repaired.The method for replacing pipeline can certainly be used to solve the problems, such as pipe leakage breakage, but some fields are made
The equipment of industry, or navigation naval vessel can not find sometimes can be used for replace pipe fitting, and be not easy to again it is right from the outside of pipeline
It is repaired.Therefore.It is necessary to design it is a kind of can efficiently quickly from the inner wall of pipeline to leakage damaged part repair
Multiple method.
Invention content
It is an object of the present invention to overcome defect existing in the prior art, provide it is a kind of it is simple in structure, easy to use,
Repairing effect is good, can efficiently quickly from the inner wall of pipeline leakage damaged part is repaired in jacketed tubular type pipeline mend
Leakage method.
To achieve the above object, the technical scheme is to design jacketed tubular type pipeline craft leakage mending methods in one kind, use
Leak site is repaired from pipeline inner wall, the method for repairing and mending includes the following steps：
S1, the material inside the pipeline with leakage defect is drained totally；
S2, the inner wall for draining clean pipeline is cleaned, drying and processing；
S3, one section of flexible casing is taken, opening up a gap in the side of casing makes the C-shaped openning shape in its section；
S4, in the inner wall coating hot-melt adhesive equipped with C openning shape casings, then magnetic tube head is sent to be bonded in having it
Together, with the outer wall of clamp gripping sleeve when bonding, the c-shaped opening of the casing after making it be bonded is closed, and will send one end of tube head
It is connect with flexible axle；
S5, it is also coated with upper hot melt adhesive in the outer wall of casing；
S6, it is provided with magnetic induction sensor near the outer wall of leaking position of pipeline, and by magnetic induction sensor and controls
Device connects；
S7, with flexible axle by be bonded with casing send tube head be sent into pipeline, when magnetic induction sensor sends out letter by controller
After number, tube head is sent in flexible axle stopping；
S8, it will be heated with the pipeline outer wall of damaged leak site, by the heating to pipeline outer wall, its heat made to pass to
The inner wall of pipeline, then by by coated in the hotmelt melts on sleeve outer wall, and by casing and being given between tube head inside pipeline
The hotmelt melts of bonding, casing revert to C openning shapes under the action of elasticity and tube head are sent to be detached from and be pasted onto in pipeline
On wall；
S9, tube head will will be sent to be taken out out of pipeline by flexible axle.
Casing is first processed into the C-shaped opening shape casing in section, then by the present invention by using flexible casing
It is bonded in and is sent on tube head with hot melt adhesive, the outer wall of clamp gripping sleeve can be used in bonding, C openings is made to be closed, that is,
So that the external dimensions of casing becomes smaller, it can be successfully sent to inside pipeline by flexible axle.Simultaneously in the outside of casing
It is also coated with hot melt adhesive, and sending permanent-magnet material is housed in tube head, there are the near sites of damaged leakage in the outer wall of pipeline
It is connect with controller equipped with magnetic induction sensor, and by magnetic induction sensor.When sending tube head in the driving of flexible axle equipped with casing
Under enter the inside of pipeline and reach when having near damaged leak site, magnetic induction sensor will make its hair by controller
Go out signal, at this time can be in the external heating pipe of pipeline, the pipeline heated can will be coated in the hot melt on the inside and outside wall of casing
Glue melts, and can be detached from tube head is sent under the action of elasticity when coated in the hotmelt melts rear sleeve on internal surface of sleeve pipe,
And it is bonded together by the inner wall coated in hot melt adhesive and pipeline on sleeve outer wall.Send tube head that can lead to after being detached from casing
Flexible axle is crossed to pull out inside pipeline.
For the ease of sending the firm connection between tube head and flexible axle, operator is made quickly and easily to judge casing whether
Through being sent on pipeline damaged leak site, convenient for casing and the strong bond for sending tube head and it is rapidly separated, preferred technical side
Case is that the tube head that send in the S3 steps includes the flexible axle at center, and the magnetosheath pipe of permanent-magnet material, magnetosheath pipe are set with outside flexible axle
It is set with netted electric heating layer outside, metal sleeve is set with outside electric heating layer.Netted electric heating layer can be passed through conducting wire and control
Device connects.
In order to avoid the gap position on casing it is corresponding with damaged leak site on pipeline after, the mesh of mending-leakage cannot be reached
, further preferred technical solution makes the C-shaped openning shape in its section in addition, opening up a gap on the magnetosheath pipe, is stitching
Magnetic separator is filled in gap.In the state that magnetic separator is corresponding with the position of magnetic induction sensor or is close, magnetic strength
Inductive sensing device do not send out signal or only sends out faint signal, and positioned at the magnetic induction sensor and magnetic material at other positions
Position is corresponding or in the state of being close, and magnetic induction sensor will send out stronger signal.
In order to avoid the gap position on casing it is corresponding with damaged leak site on pipeline after, the mesh of mending-leakage cannot be reached
, further preferred technical solution is in addition, the outer wall in S6 steps in pipeline is evenly equipped with 3~4 magnetic induction along its periphery
Sensor.In this way when sending tube head to be sent to the position equipped with magnetic induction sensor, different magnetic induction sensors will be sent out
Varying strength signal, then passes through rotary flexible shaft so that send out the strongest side of signal towards the damaged leak site on pipeline,
So that sending out the most weak side of signal far from the damaged leak site on pipeline.
For the ease of casing to be successfully sent to inside pipeline, and also to convenient for playing the elasticity of casing, into one
Walk preferred technical solution in addition, outer wall dimension and pipeline in the S3 steps under flexible casing free state it is interior
Wall size is identical, and at dynamic cooperation, the width in the gap is 3~8mm.
In order to reduce resistance of the fluid by casing section, further preferred technical solution in addition, the S3 step in set
Pipe is equipped with chamfering on the inner wall at its both ends.
For the ease of delivery situation and bonding secured situation of the monitoring casing inside pipeline, further preferred technical side
Case send the front end of tube head or rear end that camera and LED light are housed in addition, being located on flexible axle in the S3 steps.
It is secured convenient for delivery situation of the monitoring casing inside pipeline and bonding in order to simplify the structure of magnetic induction sensor
Situation, further preferred technical solution are equipped in tongue tube in addition, magnetic induction sensor in the S6 steps is tongue tube
Two panels position is corresponding and the spring leaf that is separated from each other, the end of spring leaf are connect by electrode tip with signal wire, signal wire with
Controller connects, when tube head being sent to be displaced to leakage defect tracking position, the work of the spring leaf that is separated from each other in permanent-magnet material
Signal is sent out with lower suction and to controller, camera, LED light are started work by controller control.
Pipeline for the ease of revealing various types breakage is repaired, and preferred technical solution is in addition, the S1 is walked
Pipeline in rapid is straight pipeline or is crooked pipeline.
For the ease of the processing and fabricating of casing, convenient for using casing salvaging different shape and various sizes of damaged leak point,
Further preferred technical solution is in addition, the casing in the S3 steps is first processed into long tube, according to damaged on pipeline in use
Reveal section size again cutting at corresponding length.
The advantages of the present invention are：The interior jacketed tubular type pipeline craft leakage mending method have craft leakage mending method it is simple,
It is easy to use, mending-leakage effect is good, can efficiently quickly from the inner wall of pipeline to leakage damaged part repair the features such as.Its
It is mainly characterized by being repaired damaged leak site by the inside of pipeline, can make it under the action of pipe fluid pressure
The roads patching material Yu Guan inner wall fits closely, not easily to fall off, and repairing efficiency is high, is suitable for the repairing of various pipes, especially
Repairing pipe suitable for field work mechanical equipment.
Description of the drawings
Fig. 1 is operation structural schematic diagram of the present invention using interior jacketed tubular type pipeline craft leakage mending method.
In figure：1, pipeline；2, casing；3, tube head is sent；3.1, magnetosheath pipe；3.2, electric heating layer；3.3, metal sleeve；4, soft
Axis；5, magnetic induction sensor；6, controller；7, camera；8, LED light.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is further described.Following embodiment is only
For clearly illustrating technical scheme of the present invention, and not intended to limit the protection scope of the present invention.
As shown in Figure 1, the present invention is jacketed tubular type pipeline craft leakage mending method in one kind, leakage portion is repaired using from pipeline inner wall
Position, the method for repairing and mending include the following steps：
S1, the material inside the pipeline 1 with leakage defect is drained totally；
S2, the inner wall for draining clean pipeline 1 is cleaned, drying and processing；
S3, one section of flexible casing 2 is taken, opening up a gap in the side of casing 2 makes the C-shaped opening in its section
Shape；
S4, in the inner wall coating hot-melt adhesive equipped with C openning shape casings, then magnetic send tube head 3 be bonded with having it
Together, with the outer wall of clamp gripping sleeve 5 when bonding, the c-shaped opening of the casing after making it be bonded is closed, and will send tube head 3
One end is connect with flexible axle 4；
S5, it is also coated with upper hot melt adhesive in the outer wall of casing 2；
S6, it is provided with magnetic induction sensor 5 near the outer wall of leaking position of pipeline, and by magnetic induction sensor 5 and controls
Device 6 processed connects；
S7, with flexible axle 4 by be bonded with casing 2 send tube head 3 be sent into pipeline 1, when magnetic induction sensor 5 passes through controller 6
After sending out signal, tube head 3 is sent in the stopping of flexible axle 4；
S8,1 outer wall of pipeline with damaged leak site is heated, by the heating to 1 outer wall of pipeline, its heat is made to pass
To the inner wall of pipeline 1, then by by coated in the hotmelt melts on 2 outer wall of casing, and by casing 2 and sending pipe inside pipeline 1
The hotmelt melts bonded between head, casing 2 revert to C openning shapes under the action of elasticity and tube head 3 are sent to be detached from and be pasted onto
On the inner wall of pipeline 1；
S9, tube head 3 will will be sent to be taken out out of pipeline by flexible axle 4.
Casing 2 is first processed into and cuts by using flexible and be casing 2 made of nonferromugnetic material by the present invention
The C-shaped opening shape casing 2 in face, is then bonded in hot melt adhesive and is sent on tube head 3, and clamp gripping sleeve can be used in bonding
2 outer wall makes C openings be closed, that is, the external dimensions of casing is become smaller, and can be successfully sent into it by flexible axle 4
To inside pipeline 1.It is also coated with hot melt adhesive in the outside of casing 2 simultaneously, and sending permanent-magnet material is housed in tube head 3, in pipe
There are the outer wall in road 1 near sites of damaged leakage magnetic induction sensor 5 to be housed, and magnetic induction sensor 5 and controller 6 are connected
It connects.When tube head 3 enters the inside of pipeline 1 to sending equipped with casing 2 under the driving of flexible axle 4 and arrival has damaged leak site
When neighbouring, magnetic induction sensor 5 will make it send out signal by controller 6, at this time can in the external heating pipe 1 of pipeline 1,
The pipeline 1 heated can be by coated in the hotmelt melts on 2 inside and outside wall of casing, when coated in the hot melt adhesive on internal surface of sleeve pipe
It melts rear sleeve 2 to be detached from tube head 3 is sent under the action of elasticity, and by coated in the hot melt adhesive on 2 outer wall of casing
It bonds together with the inner wall of pipeline 1.Send tube head 3 that can be pulled out inside pipeline 1 by flexible axle 4 after being detached from casing 2.
For the ease of sending the firm connection between tube head 3 and flexible axle 4, operator is made quickly and easily to judge that casing 2 is
It is no to be sent on pipeline 1 damaged leak site, convenient for casing 2 and the strong bond for sending tube head 2 and it is rapidly separated, it is of the invention
Preferred embodiment is to send the flexible axle 3 that tube head 3 includes center in the S3 steps, the outside of flexible axle 3 is set with permanent-magnet material
Magnetosheath pipe 3.1, netted electric heating layer 3.2 is set with outside magnetosheath pipe 3.1, metal sleeve 3.3 is set with outside electric heating layer 3.2.
Netted electric heating layer 3.2 can be connect by conducting wire with controller 6.
In order to avoid the gap position on casing 2 it is corresponding with damaged leak site on pipeline 1 after, mending-leakage cannot be reached
Purpose, further preferred embodiment of the present invention keep its section C-shaped in addition, opening up a gap on the magnetosheath pipe 3.1
Openning shape is filled with magnetic separator in gap.When magnetic separator is corresponding with the position of magnetic induction sensor 5 or is close
Under state, magnetic induction sensor 5 does not send out signal or only sends out faint signal, and positioned at the magnetic induction sensor at other positions
5 is corresponding with the position of magnetic material or in the state of being close, and magnetic induction sensor 5 will send out stronger signal.
In order to avoid the gap position on casing 2 it is corresponding with damaged leak site on pipeline 1 after, mending-leakage cannot be reached
Purpose, further preferred embodiment of the present invention is in addition, the outer wall in S6 steps in pipeline 1 is evenly equipped with 3~4 along its periphery
A magnetic induction sensor 5.In this way when sending tube head 3 to be sent to the position equipped with magnetic induction sensor 5, different magnetic strength inductive sensings
Device 5 will send out varying strength signal, then pass through rotary flexible shaft 4 so that send out the strongest side of signal towards on pipeline 1
Damaged leak site so that send out the most weak side of signal far from the damaged leak site on pipeline 1.
For the ease of casing 2 is successfully sent to inside pipeline 1, and also to convenient for playing the elasticity of casing 2, this
Invention further preferred embodiment is in addition, outer wall dimension in the S3 steps under 2 free state of flexible casing
It is identical as the inner wall size of pipeline 1, and at dynamic cooperation, the width in the gap is 3~8mm.
In order to reduce resistance of the fluid by casing section, further preferred embodiment of the present invention is in addition, the S3 is walked
In casing 2 on the inner wall at its both ends be equipped with chamfering.
For the ease of delivery situation of the monitoring casing inside pipeline 1 and the secured situation of bonding, the present invention is further preferred
Embodiment in addition, in the S3 steps on flexible axle 4 be located at send tube head 3 front end or rear end be equipped with camera 7 and LED
Lamp 8.
In order to simplify the structure of magnetic induction sensor 5, convenient for delivery situation of the monitoring casing inside pipeline 1 and bonding jail
Gu situation, further preferred embodiment of the present invention is done in addition, magnetic induction sensor 5 in the S6 steps is tongue tube
Connected by electrode tip and signal wire equipped with the spring leaf that two panels position is corresponding and is separated from each other, the end of spring leaf in reed pipe
It connects, signal wire is connect with controller, and when tube head being sent to be displaced to leakage defect tracking position, the spring leaf being separated from each other is forever
It is inhaled under the action of magnetic material and sends out signal to controller, camera 7, LED light 8 are started work by the control of controller 6.
Pipeline for the ease of revealing various types breakage is repaired, and the preferred embodiment of the invention is in addition, institute
The pipeline 1 in S1 steps is stated to be straight pipeline or be crooked pipeline.
For the ease of the processing and fabricating of casing 2, convenient for repairing different shape and various sizes of damaged leakage with casing 2
Point, further preferred embodiment of the present invention is in addition, the casing 2 in the S3 steps is first processed into long tube, basis in use
On pipeline 1 size of damaged leakage section again cutting at corresponding length.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. jacketed tubular type pipeline craft leakage mending method in one kind repairing leak site, which is characterized in that described to repair using from pipeline inner wall
Compensating method includes the following steps：
S1, the material inside the pipeline with leakage defect is drained totally；
S2, the inner wall for draining clean pipeline is cleaned, drying and processing；
S3, one section of flexible casing is taken, opening up a gap in the side of casing makes the C-shaped openning shape in its section；
S4, in the inner wall coating hot-melt adhesive equipped with C openning shape casings, then magnetic tube head is sent to be bonded in one with having it
Rise, with the outer wall of clamp gripping sleeve when bonding, the c-shaped opening of the casing after making it be bonded is closed, will send one end of tube head with
Flexible axle connects；
S5, it is also coated with upper hot melt adhesive in the outer wall of casing；
S6, it is provided with magnetic induction sensor near the outer wall of leaking position of pipeline, and magnetic induction sensor and controller is connected
It connects；
S7, with flexible axle by be bonded with casing send tube head be sent into pipeline, after magnetic induction sensor sends out signal by controller,
Tube head is sent in flexible axle stopping；
S8, it will be heated with the pipeline outer wall of damaged leak site, by the heating to pipeline outer wall, its heat made to pass to pipeline
Inner wall, then by being bonded between tube head by coated in the hotmelt melts on sleeve outer wall, and by casing and sending inside pipeline
Hotmelt melts, casing reverts under the action of elasticity C openning shapes and send tube head to be detached from and be pasted onto on the inner wall of pipeline；
S9, tube head will will be sent to be taken out out of pipeline by flexible axle.
2. jacketed tubular type pipeline craft leakage mending method in as described in claim 1, which is characterized in that send tube head packet in the S3 steps
The flexible axle at center is included, the magnetosheath pipe of permanent-magnet material is set with outside flexible axle, netted electric heating layer is set with outside magnetosheath pipe, electricity adds
It is set with metal sleeve outside thermosphere.
3. jacketed tubular type pipeline craft leakage mending method in as claimed in claim 2, which is characterized in that open up one on the magnetosheath pipe
Gap makes the C-shaped openning shape in its section, and magnetic separator is filled in gap.
4. jacketed tubular type pipeline craft leakage mending method in as claimed in claim 3, which is characterized in that in the outer of pipeline in the S6 steps
Wall is evenly equipped with 3~4 magnetic induction sensors along its periphery.
5. jacketed tubular type pipeline craft leakage mending method in as claimed in claim 4, which is characterized in that have elasticity in the S3 steps
Casing free state under outer wall dimension it is identical as the inner wall size of pipeline, and at dynamic cooperation, the width in the gap is 3~
8mm。
6. jacketed tubular type pipeline craft leakage mending method in as claimed in claim 5, which is characterized in that the casing in the S3 steps is at it
The inner wall at both ends is equipped with chamfering.
7. jacketed tubular type pipeline craft leakage mending method in as described in claim 1, which is characterized in that in flexible axle in the S3 steps
It is upper be located at the front end for sending tube head or rear end equipped with camera and
LED light.
8. jacketed tubular type pipeline craft leakage mending method in as claimed in claim 7, which is characterized in that the magnetic induction in the S6 steps
Sensor is tongue tube, the spring leaf that two panels position is corresponding and is separated from each other is equipped in tongue tube, the end of spring leaf passes through
Electrode tip is connect with signal wire, and signal wire is connect with controller, when tube head being sent to be displaced to leakage defect tracking position, each other
The spring leaf of separation is inhaled under the action of permanent-magnet material and sends out signal to controller, and camera, LED light are opened in controller control
It starts building to make.
9. jacketed tubular type pipeline craft leakage mending method in as described in claim 1, which is characterized in that the pipeline in the S1 steps is
Straight pipeline is crooked pipeline.
10. jacketed tubular type pipeline craft leakage mending method in as described in claim 1, which is characterized in that the casing in the S3 steps
First be processed into long tube, in use according to the size of damaged leakage section on pipeline again cutting at corresponding length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810234597.4A CN108468901B (en) | 2018-03-21 | 2018-03-21 | Jacketed tubular type pipeline craft leakage mending method in one kind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810234597.4A CN108468901B (en) | 2018-03-21 | 2018-03-21 | Jacketed tubular type pipeline craft leakage mending method in one kind |
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| Publication Number | Publication Date |
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| CN108468901A true CN108468901A (en) | 2018-08-31 |
| CN108468901B CN108468901B (en) | 2019-09-20 |
Family
ID=63265579
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| CN109084115A (en) * | 2018-09-13 | 2018-12-25 | 河北省特种设备监督检验研究院 | A kind of pressure conduit plugging device |
| CN110763071A (en) * | 2019-10-31 | 2020-02-07 | 江苏永大化工机械有限公司 | Assembly process of heat exchange tube bundle |
| CN111536363A (en) * | 2020-05-12 | 2020-08-14 | 天津市艺智汇科技发展有限公司 | Process for repairing lining of drainage pipeline through quick hot melting |
| CN113028302A (en) * | 2021-03-12 | 2021-06-25 | 华北水利水电大学 | Underground pipeline system convenient for breakpoint quick maintenance |
| CN117515310A (en) * | 2024-01-03 | 2024-02-06 | 河北省水利科学研究院(河北省大坝安全技术中心、河北省堤防水闸技术中心) | Lining type pipeline repairing system and process |
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| CN113028302A (en) * | 2021-03-12 | 2021-06-25 | 华北水利水电大学 | Underground pipeline system convenient for breakpoint quick maintenance |
| CN117515310A (en) * | 2024-01-03 | 2024-02-06 | 河北省水利科学研究院(河北省大坝安全技术中心、河北省堤防水闸技术中心) | Lining type pipeline repairing system and process |
| CN117515310B (en) * | 2024-01-03 | 2024-03-08 | 河北省水利科学研究院(河北省大坝安全技术中心、河北省堤防水闸技术中心) | Lining type pipeline repairing system and process |
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| Publication number | Publication date |
|---|---|
| CN108468901B (en) | 2019-09-20 |
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