Emergency repair method for urban water supply and distribution pipeline

Abstract

The invention discloses an emergency repair method for an urban water supply and distribution pipeline, and belongs to the technical field of water supply and energy conservation. The method comprisesthe steps of cutting off a water source, searching for a water leakage point, maintaining a pipeline and introducing water; the step of maintaining the pipeline comprises the following steps that a hole is formed in the pipeline wall close to the water leakage point of the pipeline, two air bags are guided into the pipeline from the hole in the pipeline wall, and the air bags are located on the two sides of the water leakage point of the pipeline correspondingly; the air bag is inflated rapidly, the air bag expands and is tightly attached to the inner wall of the pipeline, and therefore waterflow in the pipeline is blocked on the two sides of the water leakage point of the pipeline; and water between the air bags is discharged to perform maintenance operation so as to seal the water leakage point of the pipeline. According to the emergency repair method, the pipelines on the two sides of the water leakage point of the pipeline are sealed in an air bag plugging mode, when the pipelineis repaired, water in the pipeline between the water leakage point and upstream and downstream valves does not need to be emptied, so that water resources are saved, meanwhile, the maintenance time is shortened, and the maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of water supply and energy saving, in particular to an emergency repair method for urban water supply and distribution pipelines. Background technique [0002] During the water supply process of urban water transmission and distribution pipelines, the pipelines are damaged due to external shocks or the aging of their own materials, and it is necessary to urgently stop the water for maintenance of the pipelines. The maintenance method is generally to first find the valve wells at the upstream and downstream of the damaged point of the pipeline, close the valve, and cut off the water source. Since the two valves set up in the pipeline are generally far apart, after the valve is closed, there will be a large amount of water remaining in the pipeline. . Then excavate the damaged point, and a large amount of water in the pipeline needs to be pumped out, and then the pipeline is repaired. However, it takes a lot...

AI Technical Summary

Problems solved by technology

However, it takes a lot of time to pump the water out of large-diameter pipes, which not only wastes water sources, but also increases maintenance time and cost.

Images