CN106352197A - Rapid first-aid repair device and method for pipeline - Google Patents
Rapid first-aid repair device and method for pipeline Download PDFInfo
- Publication number
- CN106352197A CN106352197A CN201611044289.2A CN201611044289A CN106352197A CN 106352197 A CN106352197 A CN 106352197A CN 201611044289 A CN201611044289 A CN 201611044289A CN 106352197 A CN106352197 A CN 106352197A
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- China
- Prior art keywords
- pipeline
- upper shell
- repaired
- lower house
- rapid
- 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.)
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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
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/175—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by using materials which fill a space around the pipe before hardening
Abstract
The invention discloses a rapid first-aid repair device and method for a pipeline. The first-aid repair device comprises an upper shell (7), an upper shell seal gasket (8) arranged on the upper shell (7), a lower shell (11) and a lower shell seal gasket (10) arranged on the lower shell (11). A fastening connecting part is arranged at the butt joint position of the upper shell (7) and the lower shell (11) and used for connecting the upper shell (7) and the lower shell (11) into a whole shell in a butt joint mode, the inner cavity which is formed by the upper shell (7) and the lower shell (11) in a butt joint mode is a slurry filling cavity, and a grouting opening and an exhaust port are formed in the upper shell (7) and/or the lower shell (11). The first-aid repair device and method not only can guarantee rapid first-aid repair of the pipeline, but also reduces the dependency on a rubber gasket, seal performance and reliability are higher, and more importantly, the problem that media inside cavities between the upper shell and the pipeline as well as between the lower shell and the pipeline are possible to return into the pipeline, so that fluid inside the pipeline is polluted is solved.
Description
Technical field
The present invention relates to pipe first-aid equipment technical field, carry out rapid rush-repair especially for leakage or broken pipe
Pipe emergency repair joint.The invention still further relates to carry out the emergency repair method of rapid rush-repair using described pipe emergency repair joint.
Background technology
At present, growing with urban construction, various pipelines are more and more applied in feedwater, draining, heat supply, confession
The various infrastructure such as coal gas, long distance delivery oil and natural gas, agricultural irrigation, water conservancy.
Due to factors such as building or road constructions, pipeline is likely to occur seepage or breakage, then need to be rushed to repair,
, it typically adopts ductile iron pipe or armored concrete pipe of cement taking city supply water pipeline as a example, during the use of pipeline,
Due to factors such as building or road constructions, these pipelines are all it may happen that seepage or breakage, especially upper hose are easier
Have an accident.
A kind of device that accident piping failure position quickly can be repaired during Hafu-type pipeline quick-repairing joint, its utilization
Sealing ring in upper shell and lower casing body wraps up the damaged part of pipeline, then clamps to reach the purpose of fast blockage.Specifically
Ground, Hafu-type pipeline quick-repairing joint generally includes the fast abridged edition body being made up of two panels semicircle cylinder shell, two pieces rubber blanket and some tight
Firmware.During use, the inside of the fast abridged edition body that only rubber blanket need to be laid in, then by fast for two panels abridged edition body pairing hoop in pipe leakage
Or breakage, and fixing using securing member.
Hafu-type pipe first-aid fast nodule structure is simple, easy to use, can complete accident pipeline in a short period of time
Repairing work, you can save the time cut off the water, emergency repair cost can be reduced again.But, also progressively find in actual use
Come with some shortcomings part:
First, Hafu-type pipeline quick-repairing joint is after repairing finishes, the outer wall of its upper shell, the inwall of lower house and pipeline it
Between can keep a determining deviation, thus forming an annular housing, although this cavity is not in communication with the outside, can full of from pipeline leakage
Point or the medium of breakage outflow, still, the water flowing out from leak source or the breakage of aqueduct can enter taking water supply line as a example
Enter cavity, and in the presence of water delivery pressure prolonged stay in cavity, water quality is gradually deteriorated, treat that water delivery pressure is former because cutting off the water etc.
Thus when reducing or disappearing, the water having gone bad can be back in pipeline again, and after water delivery pressure recovers, in pipeline
It is conveyed to user together after water mixing, there is water safety hidden danger.
Second, according to the repairing principle of Hafu-type pipeline quick-repairing joint, it relies primarily between upper shell and lower house
Rubber blanket Pipeline Leakage Point or breakage are sealed, can transition rely on rubber gasket, the therefore sealing to rubber blanket
Very high requirement can be proposed, the design of rubber blanket, manufacture, difficulty of processing are larger, relatively costly, if rubber blanket exists asking
Topic, can directly result in and rush to repair unsuccessfully, or even have to be done over again after repairing, and the restriction due to own material, rubber
Also there is the risk of ageing failure after prolonged in pad.
Therefore, how on the premise of ensureing repairing speed, improve sealing property and the reliability of pipe emergency repair joint, and keep away
Exempt from the medium in pipeline is polluted, be those skilled in the art's technical issues that need to address.
Content of the invention
It is an object of the invention to provide a kind of rapid pipeline repairing device.This repairing device can not only ensure pipeline is entered
Row rapid rush-repair, and the degree of dependence of rubber blanket is greatly lowered, sealing property and reliability higher it is often more important that solving
Between upper-lower casing and pipeline, chamber in-vivo medium may cause the problem of fluids within pipes pollution by reflux line.
It is a further object of the present invention to provide a kind of played repairing side using what above-mentioned rapid pipeline repairing device rushed to repair
Method.
For achieving the above object, the present invention provides a kind of rapid pipeline repairing device, including upper shell, located at described upper casing
The upper shell sealing gasket of body, lower house and the lower house sealing gasket located at described lower house, described upper shell and lower house
Pairing position is provided with both to the fastening connection piece being connected in whole housing, and formed after described upper shell and lower house pairing is interior
Chamber is filled therewith chamber, and described upper shell and/or lower house are provided with grouting mouth and air vent.
Preferably, the flexible pretreatment part at piping failure to be repaired, institute are further included for along the circumferential direction anchor ear
State the length being smaller in size than described filled therewith chamber in pipeline axial direction to be repaired for the pretreatment part.
Preferably, described pretreatment part is in network structure.
Preferably, described pretreatment part is steel wire.
Preferably, further include for covering at piping failure to be repaired, and be fastened by described pretreatment part and treating
Repair the cover plate on pipeline.
Preferably, described grouting mouth is provided with and allows slurry to enter described filled therewith chamber, limit the unidirectional of slurry reflux
Stream mechanism.
Preferably, described one-way guide flow mechanism is check-valves.
Preferably, described exhaust ports are provided with air bleeding valve.
For realizing above-mentioned another object, the present invention provides a kind of rapid pipeline repairing method, comprising:
The upper shell being provided with upper shell sealing gasket and the lower house being provided with lower house sealing gasket are passed through fastening connection piece hoop
Tightening seal is on pipeline to be repaired；
After the grouting mouth of described upper shell and/or lower house is to described upper shell and lower house pairing with pipeline to be repaired it
Between formed annular housing in injection slurry；
Stop injection slurry after described slurry fills up described annular housing, and block described grouting mouth and described upper shell
And/or the air vent on lower house；
Complete to rush to repair after the solidification of described slurry.
Further, before described upper shell and lower house banding are sealed on pipeline to be repaired, using flexible pre- place
Reason part along the circumferential direction anchor ear at piping failure to be repaired.
Further, cover at piping failure to be repaired using cover plate, then adopt described flexibility pretreatment part by described lid
Plate is fastened on pipeline to be repaired.
Rapid pipeline repairing device provided by the present invention is different from the place of conventional pipelines rapid rush-repair section in the inner
Chamber is filled therewith chamber, after upper shell and lower house banding are sealed on pipeline to be repaired, can be by upper shell and lower casing
Inject slurry in the annular housing being formed between body and pipeline to be repaired to be repaired, on the one hand, after injection slurry, slurry
Whole annular housing can be filled up, the medium in such pipeline just will not enter annular housing, thoroughly avoiding medium may flow back
Pipeline causes the problem of fluids within pipes pollution, and on the other hand, the slurry of injection after solidification can be with upper shell, lower house
Form a both a strong and sealed entirety, thus forming first sealing barrier, upper-lower casing rubber seal with pipeline to be repaired
Pad forms second sealing barrier, and both seal to pipeline to be repaired together, no longer relies only on rubber gasket sealing to be repaired
Pipeline, if grouting solidification seal failure, the sealing of rubber gasket is still effective, if rubber gasket seal failure, fills
The sealing of slurry solidification is still effective, and the sealing effectiveness of two seals barrier can be superimposed and substitute each other, is not affecting repairing effect
On the premise of rate, it is remarkably improved sealing property and the stability at repairing position.
In a kind of preferred version, further include flexible pre- at piping failure to be repaired for along the circumferential direction anchor ear
Handling member.By this flexible pretreatment part, pipeline to be repaired is processed in advance, on the one hand can play plugging action, prevent from starching
Material enters in pipeline from breakage, and on the other hand after the slurry solidification of injection, flexible pretreatment part can be set in together
In slurry, play booster action, improve the structural strength after slurry solidification.
Rapid pipeline repairing method provided by the present invention is substantially corresponding with described rapid pipeline repairing device, due to described
Described rapid pipeline repairing device has above-mentioned technique effect, and corresponding rapid pipeline repairing method also should have identical
Technique effect.
Brief description
Fig. 1 is a kind of rapid pipeline repairing device axial sectional view in a state of use disclosed in the embodiment of the present invention；
Fig. 2 is a kind of rapid pipeline repairing device radial cross-section in a state of use disclosed in the embodiment of the present invention；
Fig. 3 is a kind of flow chart of rapid pipeline repairing method disclosed in the embodiment of the present invention.
In figure:
1. 6. slurry, 7. upper shell 8. upper casing at check-valves 2. air bleeding valve 3. steel wire 4. cover plate 5. piping failure
Body sealing gasket 9. pipeline to be repaired 10. lower house sealing gasket, 11. lower house 12. bolt
Specific embodiment
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Herein, the term such as " upper and lower, inside and outside " is established based on position relationship shown in the drawings, with reference to the accompanying drawings
Difference, corresponding position relationship is also possible to change therewith, therefore, can not be understood as exhausted to protection domain
To restriction；And, the relational terms of such as " first " and " second " or the like be used merely to by one with another have identical
The part of title makes a distinction, and not necessarily require or imply exist between these parts any this actual relation or
Sequentially.
Refer to Fig. 1, Fig. 2, Fig. 1 is for a kind of rapid pipeline repairing device disclosed in the embodiment of the present invention in a state of use
Axial sectional view；Fig. 2 cuts open for a kind of rapid pipeline repairing device radial direction in a state of use disclosed in the embodiment of the present invention
View.
As illustrated, this rapid pipeline repairing device mainly by upper shell 7, the upper shell sealing gasket 8 located at upper shell 7,
The part such as lower house 11 and the lower house sealing gasket 10 located at lower house 11 composition, upper shell 7 and lower house 11 semicircular in shape
Tubular structure, both pairing positions are vertically connected with by bolt 12, can be to one complete circular cylinder body of synthesis, so that banding
On pipeline 9 to be repaired.
Upper shell 7 surrounding has the groove installing rubber gasket, and left hand edge and right hand edge are provided with is easy to bolt 12 fastening
First flange side, first flange side is provided with the first bolt hole, and lower house 11 surrounding has the groove installing rubber gasket, the left side
Edge and right hand edge are provided with the second flange side being easy to bolt 12 fastening, and second flange side is provided with the second bolt hole, upper shell 7 with
Form airtight space, because pipeline 9 to be repaired is horizontally through this space, therefore upper shell 7 and lower house after lower house 11 pairing
Form annular housing between the outer wall of 11 inwall and pipeline to be repaired 9.
The medium of conveying can be detained in the annular housing of conventional pipelines rapid rush-repair section, and sealing property only relies on rubber
, there is the risk of inefficacy in sealing gasket.Annular housing is designed as filled therewith chamber by the present invention, simultaneously in upper shell 7 top
Centre position setting one grouting mouth, and at upper shell top, one air vent is set near the position of one end, when being rushed to repair, pass through
Inject slurry further to be sealed into annular housing.
Certainly, grouting mouth and air vent, can also be to the left side or the right sides in addition to being arranged on upper shell top center position
Side tilts certain angle or skew certain distance, to meet the requirement to perfusion direction for the different use occasions, is easy to site operation
Repairing.
Check-valves 1 are arranged in grouting mouth, and it allows slurry to enter filled therewith chamber, limit slurry reflux, by non-return
Valve 1 can be by the space between slurry press-in upper-lower casing and pipeline to be repaired 9, and exhaust ports are provided with air bleeding valve 2, can during press-in slurry
Discharge the gas in annular housing, show that when slurry is emerged from air bleeding valve 2 air in annular housing empties, slurry 6
Have been filled with whole annular housing, air bleeding valve 2 can be closed.
Additionally, before being rushed to repair, can also be in the damaged part of pipeline 9 to be repaired along the circumferential direction shroud ring some circles steel wire
Net 3, size in pipeline 9 axial direction to be repaired for the steel wire 3 should be less than the length in filled therewith chamber, then, then is incited somebody to action using bolt 12
Upper-lower casing is fastened on shroud ring to be had on the pipeline to be repaired 9 of steel wire 3, then, then is in the milk.
By steel wire 3 net, pipeline 9 to be repaired is processed in advance, on the one hand can play plugging action, prevent slurry 6 from
Breakage enters in pipeline 9 to be repaired, and on the other hand after slurry 6 solidification of injection, steel wire 3 can be set in slurry together
In 6, play booster action, improve the structural strength after slurry 6 solidification.
Certainly, except steel wire 3, flexible pretreatment part can also be that other are suitable to be wrapped on pipeline 9 to be repaired, and can
It is solidified as the compliant member of an entirety together with slurry 6.
If the breakage of pipeline 9 to be repaired is hole, a laminal lid can be installed between hole and steel wire 3 additional
Plate 4, the radian of cover plate 4 is consistent with the radian of pipeline 9 to be repaired, and both can fit together, to cover at hole (as breakage
Locate to stitch for thin, then can be not added with capping plate), cover plate 4 is fastened on pipeline 9 to be repaired by steel wire 3.
Slurry 6 is being capable of rapid solidification and intensity is higher after solidifying, nontoxic material after solidification, such as concrete grout
Material or foam filling agent etc., define one with steel wire 3, cover plate 4, pipeline to be repaired 9 and upper-lower casing after slurry 6 solidification
Both a strong and sealed entirety.
Refer to Fig. 3, Fig. 3 is a kind of flow chart of rapid pipeline repairing method disclosed in the embodiment of the present invention.
Except above-mentioned rapid pipeline repairing device, the present invention also provides a kind of rapid pipeline repairing method, walks including following
Rapid:
Step s1: the upper shell 7 being provided with upper shell sealing gasket 8 and the lower house 11 being provided with lower house sealing gasket 10 are passed through
Bolt 12 banding is sealed on pipeline 9 to be repaired；
Step s2: formed and pipeline to be repaired 9 between after the grouting mouth of upper shell 7 is to upper shell 7 and lower house 11 pairing
Annular housing in injection slurry 6；
Step s3: by the check-valves 1 on upper shell 7 to press-in slurry in the annular housing of upper-lower casing and pipeline 9 to be repaired
Material, opens air bleeding valve 2 during press-in slurry, closes air bleeding valve 2 when slurry is emerged from air bleeding valve 2, stops injection slurry 6, only
Return valve 1 automatic plugging grouting mouth.
Step s4: treat that slurry solidifies, complete after checking No leakage to rush to repair.
Further, before upper shell 7 and lower house 11 banding are sealed on pipeline 9 to be repaired, steel wire 3 can be adopted
Along the circumferential direction anchor ear is in the breakage of pipeline 9 to be repaired.
Further, the breakage of pipeline 9 to be repaired before pipeline 9 to be repaired is wound around using steel wire 3, is covered using cover plate 4
Place, then using steel wire 3, cover plate 4 is fastened on pipeline 9 to be repaired.
Above-described embodiment is only the preferred version of the present invention, is specifically not limited thereto, on this basis can be according to reality
Needs are made having and are targetedly adjusted, thus obtaining different embodiments.For example, will be in the milk mouth and exhaust ports design under
On housing 11, or will be in the milk one of mouth and air vent design on upper shell 7, and another one designs on lower house 11,
Etc..Because mode in the cards is more, just no longer illustrate one by one here.
Rapid pipeline repairing device provided by the present invention and emergency repair method are sealed in upper shell 7 and lower house 11 banding
After on pipeline 9 to be repaired, can be by injecting into the annular housing being formed between upper shell 7 and lower house 11 and pipeline to be repaired 9
Slurry 6 is being repaired, on the one hand, after injection slurry 6, slurry 6 can fill up whole annular housing.So, in pipeline
Medium just will not enter annular housing, thoroughly avoids the problem that the possible reflux line of medium causes fluids within pipes pollution, separately
On the one hand, the slurry 6 of injection after solidification can be both firm with the formation such as upper shell 7, lower house 11 and pipeline to be repaired 9 one
The entirety of sealing again, thus forming first sealing barrier, upper-lower casing rubber gasket forms second sealing barrier, both
Together pipeline 9 to be repaired is sealed, no longer rely only on rubber gasket and seal pipeline to be repaired, if grouting solidification seal failure,
Then the sealing of rubber gasket is still effective, if rubber gasket seal failure, the sealing of solidification of being in the milk is still effective, twice
The sealing effectiveness of sealing barrier can be superimposed and substitute each other, on the premise of not affecting first-aid repair efficiency, be remarkably improved repairing
The sealing property at position and stability.
Above rapid pipeline repairing device provided by the present invention and emergency repair method are described in detail.Herein should
With specific case, the principle of the present invention and embodiment are set forth, the explanation of above example is only intended to help reason
The core concept of the solution present invention.It should be pointed out that for those skilled in the art, former without departing from the present invention
On the premise of reason, the present invention can also be carried out with some improvement and modify, these improve and modification also falls into right of the present invention and wants
In the protection domain asked.
Claims (11)
1. a kind of rapid pipeline repairing device, including upper shell (7), the upper shell sealing gasket (8) located at described upper shell (7),
Lower house (11) and the lower house sealing gasket (10) located at described lower house (11), described upper shell (7) and lower house (11)
Pairing position be provided with both to the fastening connection piece being connected in whole housing it is characterised in that described upper shell (7) and lower casing
The inner chamber being formed after body (11) pairing is filled therewith chamber, and described upper shell (7) and/or lower house (11) are provided with grouting mouth and row
QI KOU.
2. rapid pipeline repairing device according to claim 1 is it is characterised in that further include for along the circumferential direction
, in the flexible pretreatment part of pipeline to be repaired (9) breakage, size in pipeline to be repaired (9) axial direction for the described pretreatment part is little for anchor ear
Length in described filled therewith chamber.
3. rapid pipeline repairing device according to claim 2 is it is characterised in that described pretreatment part is in network structure.
4. rapid pipeline repairing device according to claim 3 is it is characterised in that described pretreatment part is steel wire (3).
5. the rapid pipeline repairing device according to any one of claim 2 to 4 it is characterised in that further include for
Cover the breakage of pipeline to be repaired (9), and for the cover plate (4) on pipeline to be repaired (9) that is fastened by described pretreatment part.
6. the rapid pipeline repairing device according to any one of Claims 1-4 is it is characterised in that described grouting mouth is provided with
Slurry is allowed to enter described filled therewith chamber, limit the one-way guide flow mechanism of slurry reflux.
7. rapid pipeline repairing device according to claim 6 is it is characterised in that described one-way guide flow mechanism is check-valves
(1).
8. the rapid pipeline repairing device according to any one of Claims 1-4 is it is characterised in that described exhaust ports set
There is air bleeding valve (2).
9. a kind of rapid pipeline repairing method, comprising:
The upper shell (7) being provided with upper shell sealing gasket (8) and the lower house (11) being provided with lower house sealing gasket (10) are passed through tight
Connected fitting banding is sealed on pipeline to be repaired (9)；
After the grouting mouth of described upper shell (7) and/or lower house (11) is to described upper shell (7) and lower house (11) pairing with
Injection slurry (6) in the annular housing being formed between pipeline (9) to be repaired；
Stop injection slurry (6) after described slurry (6) fills up described annular housing, and block described grouting mouth and described upper casing
Air vent on body (7) and/or lower house (11)；
Solidify after described slurry (6) and complete after checking No leakage to rush to repair.
10. rapid pipeline repairing method according to claim 9 is it is characterised in that by described upper shell (7) and lower casing
Body (11) banding be sealed in pipeline to be repaired (9) upper before, using flexible pretreatment part along the circumferential direction anchor ear in pipeline to be repaired (9)
Breakage.
11. rapid pipeline repairing methods according to claim 10 are it is characterised in that cover pipe to be repaired using cover plate (4)
The breakage in road (9), then adopts described flexibility pretreatment part that described cover plate (4) is fastened on pipeline to be repaired (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611044289.2A CN106352197A (en) | 2016-11-24 | 2016-11-24 | Rapid first-aid repair device and method for pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611044289.2A CN106352197A (en) | 2016-11-24 | 2016-11-24 | Rapid first-aid repair device and method for pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106352197A true CN106352197A (en) | 2017-01-25 |
Family
ID=57862765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611044289.2A Pending CN106352197A (en) | 2016-11-24 | 2016-11-24 | Rapid first-aid repair device and method for pipeline |
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| Country | Link |
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| CN (1) | CN106352197A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091391A (en) * | 2017-05-26 | 2017-08-25 | 中国矿业大学 | A kind of fracture automatic plugging device of freezing pipe joint |
| CN107388043A (en) * | 2017-06-30 | 2017-11-24 | 江苏海澜正和环境科技有限公司 | Condensate water drainage arrangement and its method for arranging under gas pipeline operating condition |
| CN108087658A (en) * | 2017-07-20 | 2018-05-29 | 中国石油大学(华东) | A kind of oil-gas pipeline fast plugging device |
| CN109163167A (en) * | 2018-10-12 | 2019-01-08 | 华创天元实业发展有限责任公司 | Multiple enhancing steel-plastics composite pipe repairing device and method |
| CN113137530A (en) * | 2021-05-07 | 2021-07-20 | 江苏永钢集团有限公司 | Online leakage blocking device and method for gas pipeline |
| CN115076508A (en) * | 2022-06-20 | 2022-09-20 | 南京江北水务发展有限公司 | Water supply steel pipe weld joint leakage repairing method |
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| DE19717209A1 (en) * | 1997-04-24 | 1998-10-29 | Manibs Spezialarmaturen | Pipe leak repair cuff surrounding pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091391A (en) * | 2017-05-26 | 2017-08-25 | 中国矿业大学 | A kind of fracture automatic plugging device of freezing pipe joint |
| CN107091391B (en) * | 2017-05-26 | 2019-04-05 | 中国矿业大学 | A kind of fracture automatic plugging device of freezing pipe joint |
| CN107388043A (en) * | 2017-06-30 | 2017-11-24 | 江苏海澜正和环境科技有限公司 | Condensate water drainage arrangement and its method for arranging under gas pipeline operating condition |
| CN108087658A (en) * | 2017-07-20 | 2018-05-29 | 中国石油大学(华东) | A kind of oil-gas pipeline fast plugging device |
| CN108087658B (en) * | 2017-07-20 | 2019-10-11 | 中国石油大学(华东) | A kind of oil-gas pipeline fast plugging device |
| CN109163167A (en) * | 2018-10-12 | 2019-01-08 | 华创天元实业发展有限责任公司 | Multiple enhancing steel-plastics composite pipe repairing device and method |
| CN113137530A (en) * | 2021-05-07 | 2021-07-20 | 江苏永钢集团有限公司 | Online leakage blocking device and method for gas pipeline |
| CN115076508A (en) * | 2022-06-20 | 2022-09-20 | 南京江北水务发展有限公司 | Water supply steel pipe weld joint leakage repairing method |
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Application publication date: 20170125 |
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