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Under-water leakage blocking and repairing method of exterior line pipeline

A pipeline and water-carrying technology, applied in the direction of pipe components, pipes/pipe joints/pipe fittings, mechanical equipment, etc., can solve the problems of pipeline retention and poor quality of pipeline maintenance, and achieve the effect of improving work efficiency, easy to popularize and use, and simple to operate.

Inactive Publication Date: 2012-08-15
CHINA MCC17 GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, in the emergency repair of damaged external pipelines, due to the long pipeline, even if the water is cut off, the water stored in the pipeline cannot be drained in a short time. Pumping, but the water flowing inside the pipeline is still difficult to pump out. Usually, the damaged part of the pipeline is repaired by welding or socket connection. The emergency repair port must be free of water. If the water flow cannot be completely cut off, the maintenance quality of the pipeline will not be high. ; If foreign matter is used to plug the leak, it will often result in a large amount of residue remaining in the pipeline

Method used

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  • Under-water leakage blocking and repairing method of exterior line pipeline
  • Under-water leakage blocking and repairing method of exterior line pipeline
  • Under-water leakage blocking and repairing method of exterior line pipeline

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Embodiment

[0013] Example: During the construction of Masteel’s new district, an underground pipe 3 with a diameter of 500mm was dug up due to the brutal construction of an excavator, resulting in a large amount of water leakage from the pipe 3. Although the water source valve at the upper end of the pipe 3 was closed in time, due to the pipeline Longer, plus the backflow of the water source inside the pipeline 3, the water stored in the pipeline 3 cannot be discharged, so that the emergency repair work is hindered. However, the Masteel New District Headquarters requires that the normal water supply must be restored within four hours. In view of this situation, this method is adopted The invention proposes an emergency repair method for plugging leaks with water in external pipelines: After confirming the damaged position of the pipeline 3, first close the water source valve at the upper end of the pipeline 3 and the valve at the lower end, and immediately dig a repair pit, about 4 away fr...

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Abstract

The invention discloses an under-water leakage blocking and repairing method of an exterior line pipeline and belongs to a pipeline repairing method. The method is characterized in that the left position and the right position at the outer side of the damaged position of a pipeline are respectively provided with a threaded hole; the left threaded hole and the right threaded hole are big enough for a contracted rubber ball to be inserted; uninflated rubber balls are respectively plugged into the pipeline from each threaded hole; then, the uninflated rubber balls are inflated to seal the inner cavity of the pipeline so as to block water flow; and then the pipeline is repaired in a welding or bellmouth connecting mode to finish the repair work of the under-water leakage blockage of the pipeline. The under-water leakage blocking and repairing method of the exterior line pipeline is convenient to use and is low in cost, repairing time is shortened, and the working efficiency and the pipeline repairing quality are improved.

Description

technical field [0001] The invention belongs to a pipeline emergency repair method, in particular to a water-filled emergency repair method for an outer pipeline. Background technique [0002] At present, in the emergency repair of damaged external pipelines, due to the long pipeline, even if the water is cut off, the water stored in the pipeline cannot be drained in a short time. Pumping, but the water flowing inside the pipeline is still difficult to pump out. Usually, the damaged part of the pipeline is repaired by welding or socket connection. The emergency repair port must be free of water. If the water flow cannot be completely cut off, the maintenance quality of the pipeline will not be high. ; Such as the use of foreign matter plugging often results in a large amount of residue remaining in the pipeline. Contents of the invention [0003] The purpose of the present invention is to propose a method for plugging and emergency repair of external pipelines with water,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/124F16L55/16
Inventor 魏发利
Owner CHINA MCC17 GRP
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