CN111827407A - Emergency repair method for urban water supply distribution pipeline - Google Patents
Emergency repair method for urban water supply distribution pipeline Download PDFInfo
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- CN111827407A CN111827407A CN202010548202.5A CN202010548202A CN111827407A CN 111827407 A CN111827407 A CN 111827407A CN 202010548202 A CN202010548202 A CN 202010548202A CN 111827407 A CN111827407 A CN 111827407A
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- pipeline
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- water leakage
- air bag
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 158
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 30
- 238000012423 maintenance Methods 0.000 claims abstract description 18
- 238000007599 discharging Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 238000004904 shortening Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/006—Arrangements or methods for cleaning or refurbishing water conduits
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses an emergency repair method for an urban water supply distribution pipeline, and belongs to the technical field of water supply energy conservation. An emergency repair method for an urban water supply distribution pipeline comprises the steps of cutting off a water source, searching a water leakage point, maintaining the pipeline and communicating water. Wherein, the step of maintaining the pipeline includes: forming holes on the pipeline wall near the pipeline water leakage point, and introducing two air bags into the pipeline from the holes on the pipeline wall, wherein the air bags are respectively positioned at two sides of the pipeline water leakage point; rapidly inflating the air bag, and enabling the air bag to expand and be tightly attached to the inner wall of the pipeline, so that water flow in the pipeline is blocked at two sides of a water leakage point of the pipeline; and (4) exhausting water between the air bags, and performing maintenance operation so as to close the water leakage point of the pipeline. The invention adopts the air bag blocking mode to close the pipelines at two sides of the water leakage point of the pipeline, and does not need to empty the water in the pipeline between the water leakage point and the upstream and downstream valves when the pipeline is rush-repaired, thereby saving water resources, shortening the maintenance time and reducing the maintenance cost.
Description
Technical Field
The invention relates to the technical field of water supply energy conservation, in particular to an emergency repair method for an urban water supply distribution pipeline.
Background
In the water supply process of the urban water delivery and distribution pipeline, the pipeline is damaged due to external force impact or aging of the material of the pipeline, and the pipeline needs to be emergently maintained in a water cut-off mode. The maintenance method generally comprises the steps of finding a valve well which is closest to the upstream and downstream of a damaged point of the pipeline, closing the valve and cutting off a water source, wherein a large amount of water is remained in the pipeline after the valve is closed because two valves arranged in the pipeline are generally far away from each other. Then, a damaged point is excavated, a large amount of water in the pipeline needs to be pumped out, and then the pipeline is maintained. However, large-diameter pipelines need a lot of time to pump water out, which wastes water sources and increases maintenance time and cost.
Disclosure of Invention
The invention mainly solves the technical problem of providing an emergency repair method for an urban water supply distribution pipeline, which can rapidly plug the pipelines at two sides of a water leakage position and repair the pipelines under the condition of not discharging a large amount of water at the water leakage position of the pipelines, thereby saving the pipeline repair time, saving water sources and reducing the repair cost.
In order to achieve the above purpose, the invention adopts a technical scheme that: the emergency repair method for the urban water supply distribution pipeline comprises the steps of cutting off a water source, searching a water leakage point, maintaining a pipeline and communicating water, and is characterized in that the step of maintaining the pipeline comprises the following steps: forming holes on the pipeline wall near the pipeline water leakage point, and introducing two air bags into the pipeline from the holes on the pipeline wall, wherein the air bags are respectively positioned at two sides of the pipeline water leakage point; rapidly inflating the air bag, and enabling the air bag to expand and be tightly attached to the inner wall of the pipeline, so that water flow in the pipeline is blocked at two sides of a water leakage point of the pipeline; and (4) exhausting water between the air bags, and performing maintenance operation so as to close the water leakage point of the pipeline.
The invention has the beneficial effects that:
the invention adopts the air bag blocking mode to close the pipelines at two sides of the water leakage point of the pipeline, thereby maintaining and closing the water leakage point without discharging water in the pipeline between the water leakage point and the upstream and downstream valves. The water resource is saved, the maintenance time is shortened, and the maintenance cost is reduced.
Drawings
FIG. 1 is a flow chart of an emergency repair method for a city water supply and distribution pipeline according to the present invention;
FIG. 2 is a schematic flow chart of the steps of repairing the pipe according to the present invention;
FIG. 3 is a schematic structural view of a water leakage point of a city water supply distribution pipeline of the invention;
the components in the drawings are labeled as: 1-an upstream butterfly valve expansion piece, 2-an upstream butterfly valve, 3-an upstream water-stopping air bag, 4-a pipeline opening, 5-a pipeline water leakage point, 6-a downstream water-stopping air bag, 7-a downstream butterfly valve expansion piece and 8-a downstream butterfly valve.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
Fig. 1 shows a specific embodiment of an emergency repair method for a city water supply and distribution pipeline according to the present invention, which includes the following steps:
s101, in the step of cutting off the water source, in one embodiment of the present invention, when the water supply pipeline is damaged and leaks, the general position of the water leakage point is found, then the valve closest to the water leakage point is found upstream along the direction of the water flow, and the upstream valve is closed. And searching the valve closest to the water leakage point downstream of the water leakage point, and then closing the downstream valve. After the valves at the upstream and downstream of the water leakage point are closed, the water source entering the water leakage point is cut off, and only the water in the pipeline remains.
Step S102 is a step of finding a water leakage point, and in one embodiment of the invention, digging around the water leakage point to expose a portion of the water supply pipeline with the water leakage point sufficiently so that the pipeline can be carefully inspected to determine the exact location of the water leakage point. The mark is then made at the exact location of the water leak point.
S103 is a step of repairing the pipeline, and fig. 2 shows an embodiment of the step of repairing the pipeline according to the present invention, in which the method includes the following steps:
s201 is a pipe wall opening step, and in one embodiment of the present invention, an opening is made on the pipe in the vicinity of the water leakage point mark. For example, when the water leakage point is positioned on the side surface or the bottom of the pipeline, a hole is formed above the pipeline corresponding to the water leakage point, and if the water leakage point is positioned on the upper part of the pipeline, a hole is formed beside the water leakage point. The holes should be as small as possible to reduce damage to the original mechanical structure of the pipeline and also reduce the workload and working time for maintaining the pipeline. And the sealing operation of the open pore is simple after the water leakage point is sealed.
And S202, an air bag introducing step, wherein in one embodiment of the invention, two uninflated air bags are introduced into the pipeline from openings on the wall of the pipeline, the two air bags are respectively positioned at two sides of a water leakage point, and an inflating pipeline is arranged on each air bag and is connected with a fan or an air pump outside the pipeline.
S203, a step of inflating and blocking the pipeline by the air bag, in one embodiment of the invention, after the air bag is guided into the pipeline, a fan or an air pump is started, the air bag is rapidly inflated by the inflation tube, and the air bag is gradually inflated until the inflated air bag is tightly attached to the inner wall of the pipeline, and the pipeline is blocked by the pressure of the air bag on the inner wall of the pipeline, so that a water leakage point is blocked from water in the pipeline outside the air bag. Therefore, the water leakage point is not required to be closed and maintained after the water between the upstream valve and the downstream valve of the water leakage point is completely emptied. The water resource and the time for emptying the water in the pipeline are saved, and the efficiency of pipeline rush repair is also improved. And meanwhile, the labor and material cost for maintenance is reduced.
And S204, a step of draining and closing the water leakage point, wherein in one embodiment of the invention, the water between the two inflatable air bags is drained, so that no water in the pipeline at the water leakage point influences the maintenance of the water leakage point. After the water in the pipeline at the water leakage point is discharged, the water leakage point is sealed, for example, by welding.
S205 is a step of taking out the air bag and closing the opening, in one embodiment of the invention, after the water leakage point is closed, the air bag is pumped by a fan or an air pump through an inflation tube, so that the expanded air bag is quickly shrunk. And after the air bag is emptied, taking the air bag out of the pipeline from the opening. The opening is then closed, for example by welding. Because the opening needs to be closed, when the pipeline is opened, the size of the opening is reduced as much as possible, and the requirements of putting the air bag into the pipeline and taking the air bag out of the pipeline can be met. And finishing the process of repairing the pipeline after the opening is closed.
S104, a water supply step, in one embodiment of the invention, after the maintenance of the pipeline is finished, a valve closed at the downstream of the water leakage point is opened firstly, so that the smoothness of the pipeline is ensured, and the excessive pressure formed in the pipeline when an upstream water source is connected is avoided. Then, a closing valve at the upstream of the water leakage point is slowly opened, so that the water supply pipeline is returned to be filled with water.
For a more complete description of the present invention, the process of emergency repair of water supply pipes according to the present invention is further described with reference to fig. 3;
fig. 3 shows a concrete embodiment of the structure of the urban water supply and distribution pipeline water leakage point, in the embodiment, the structure of the urban water supply and distribution pipeline water leakage point mainly comprises: the water-stopping device comprises an upstream butterfly valve expansion piece 1, an upstream butterfly valve 2, an upstream water-stopping air bag 3, a pipeline opening 4, a pipeline water leakage point 5, a downstream water-stopping air bag 6, a downstream butterfly valve expansion piece 7 and a downstream butterfly valve 8.
When the pipeline is damaged and water leakage occurs, the position of the water leakage point 5 of the pipeline is roughly determined, and then the upstream butterfly valve 2 and the downstream butterfly valve 8 are closed. The ground beside the pipeline water leakage point 5 is excavated to fully expose the pipeline, so that the accurate position of the pipeline water leakage point 5 is exactly found and marked on the pipeline.
The pipe is perforated in the vicinity of the pipe water leakage point 5 to form a pipe opening 4. Then an upstream water-stopping air bag 3 and a downstream water-stopping air bag 6 are placed into the pipeline from the opening 4 of the pipeline, and are communicated with an external fan through inflation pipes on the two air bags.
And starting the fan to inflate the upstream water-stopping air bag 3 and the downstream water-stopping air bag 6. The two air bags are gradually expanded until the two air bags are fully contacted with the inner wall of the pipeline and are attached. The pipeline on the upstream side of the upstream water-stopping air bag 3 and the pipeline on the downstream side of the downstream water-stopping air bag 6 are plugged by the pressure of the upstream water-stopping air bag 3 and the downstream water-stopping air bag 6 on the inner wall of the pipeline, so that the water in the pipeline is sealed, and the loss of the water is reduced.
The water between the upstream water stopping air bag 3 and the downstream water stopping air bag 6 is drained, so that no water in the pipeline can have adverse effect on the closed maintenance operation of the pipeline water leakage point 5. The pipe leak 5 is then repaired to close, for example by welding.
After the pipeline water leakage point 5 is closed, the pipeline on the upstream side of the upstream water-stopping air bag 3 and the gas in the downstream water-stopping air bag 6 are evacuated, for example, a fan can be used for air suction. Then the two air bags are taken out from the pipeline opening 4, and the pipeline opening 4 is subjected to sealing maintenance operation.
After the opening 4 of the pipeline is closed, the downstream butterfly valve 8 is opened firstly, so that when an upstream water source is connected, water flow can smoothly flow downstream along the pipeline without forming overhigh pressure on the pipeline. Then the upstream butterfly valve 2 is opened to connect the upstream water source, and the water supply of the water supply pipeline is recovered.
Compared with the conventional method for rush-repairing the water supply pipeline, the method has the advantages of simple and rapid operation when the water supply pipeline is rush-repaired, especially when the distance between the upstream valve and the downstream valve of the pipeline with large diameter is long. But also saves a large amount of water resources, maintenance time and maintenance cost.
The invention adopts the air bag blocking mode to close the pipelines at two sides of the water leakage point of the pipeline, thereby maintaining and closing the water leakage point without discharging water in the pipeline between the water leakage point and the upstream and downstream valves. The water supply pipeline rush-repair mode saves water resources, shortens the maintenance time and reduces the maintenance cost.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (5)
1. The emergency repair method for the urban water supply distribution pipeline comprises the steps of cutting off a water source, searching a pipeline water leakage point, maintaining the pipeline and communicating water, and is characterized in that the step of maintaining the pipeline comprises the following steps:
forming holes on the pipeline wall near the pipeline water leakage point, and introducing two air bags into the pipeline from the holes on the pipeline wall, wherein the air bags are respectively positioned at two sides of the pipeline water leakage point;
rapidly inflating the air bag, wherein the air bag expands and is tightly attached to the inner wall of the pipeline, so that water flow in the pipeline is blocked at two sides of a water leakage point of the pipeline; and evacuating water between the air bags, and performing maintenance operation to close the pipeline water leakage point.
2. The emergency repair method for a city water distribution pipeline according to claim 1, wherein the step of cutting off the water source is to close a pipeline valve upstream and downstream of the water leakage point of the pipeline and cut off the water source of the water flow passing through the water leakage point.
3. The emergency repair method for a city water distribution pipeline according to claim 1, wherein the step of finding the water leakage point is to excavate and expose the pipe at the water leakage point, and inspect the pipe to determine the exact location of the water leakage point.
4. The emergency repair method for a city water distribution pipeline according to claim 1, wherein the step of repairing the pipeline further comprises: and after the water leakage point of the pipeline is closed, discharging the gas in the air bag, and taking out the air bag from the opening.
5. The emergency repair method for the city water supply distribution pipeline according to claim 1, wherein the water passing step is to close the opening, open pipeline valves at the upper and lower positions of the water leakage point and restore pipeline water passing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010548202.5A CN111827407A (en) | 2020-06-16 | 2020-06-16 | Emergency repair method for urban water supply distribution pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010548202.5A CN111827407A (en) | 2020-06-16 | 2020-06-16 | Emergency repair method for urban water supply distribution pipeline |
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| CN111827407A true CN111827407A (en) | 2020-10-27 |
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| CN202010548202.5A Pending CN111827407A (en) | 2020-06-16 | 2020-06-16 | Emergency repair method for urban water supply distribution pipeline |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114383052A (en) * | 2022-01-10 | 2022-04-22 | 南昌县供水有限责任公司 | Online leakage-detecting water supply pipeline system and online leakage monitoring method |
| CN114576439A (en) * | 2022-02-22 | 2022-06-03 | 杨春燕 | Building water supply and drainage system |
| CN114593304A (en) * | 2022-04-08 | 2022-06-07 | 深圳市市政工程总公司 | Air bag filling type plugging construction method for large buried deep water pipeline of water plant |
| CN114600845A (en) * | 2022-03-07 | 2022-06-10 | 烟台中集蓝海洋科技有限公司 | Culture system, fish driving device and fish driving method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114383052A (en) * | 2022-01-10 | 2022-04-22 | 南昌县供水有限责任公司 | Online leakage-detecting water supply pipeline system and online leakage monitoring method |
| CN114383052B (en) * | 2022-01-10 | 2023-10-10 | 南昌县供水有限责任公司 | Online leakage detection water supply pipeline system and online leakage monitoring method |
| CN114576439A (en) * | 2022-02-22 | 2022-06-03 | 杨春燕 | Building water supply and drainage system |
| CN114600845A (en) * | 2022-03-07 | 2022-06-10 | 烟台中集蓝海洋科技有限公司 | Culture system, fish driving device and fish driving method |
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| CN114593304A (en) * | 2022-04-08 | 2022-06-07 | 深圳市市政工程总公司 | Air bag filling type plugging construction method for large buried deep water pipeline of water plant |
| CN114593304B (en) * | 2022-04-08 | 2023-09-26 | 深圳市市政工程总公司 | Water factory large-buried deep water pipeline air bag filling type plugging construction method |
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Application publication date: 20201027 |