Temporary drainage facility for urban drainage pipeline rehabilitation

Abstract

The invention relates to a temporary drainage facility for urban drainage pipeline rehabilitation. The temporary drainage facility comprises an air bag, a pressure induction valve, a hand valve, a control switch, a signal conductor and a corrugated pipe; the middle of the air bag is provided with a plastic honeycomb duct; when the air bag is filled with the air and is arranged at the inner side of a drainage pipeline to block off the pipeline, the plastic honeycomb duct arranged at the middle of the air bag still can drain away water; the hand valve and the pressure induction valve are connected with the outer end part of the plastic honeycomb duct, arranged in the air bag, by means of a t-branch pipe, and the hand valve and the pressure induction valve are used for closing or opening the drainage of the pipeline; the corrugated pipe is connected with the other ends of the valves, and is used for drain the sewage of an upstream pipeline. When the air bag is filled with the air and is arranged at the inner side of the drainage pipeline to block off the pipeline, water-free operation can be implemented on a downstream pipeline which needs to be rehabilitated; once the upstream sewage pipeline has an omen of overflow, the pressure induction valve automatically opens, and a self-priming centrifugal pump connected onto the corrugated pipe is enabled through the control switch, and thus, the drainage of upstream sewage is realized under the condition that the blocking air bag is not disassembled.

Description

technical field [0001] The invention relates to a supporting facility for repairing construction of municipal drainage pipes, in particular to a temporary drainage device for repairing urban drainage pipes. Background technique [0002] In the past, when repairing urban underground drainage pipes, it was necessary to stop the water supply of the repaired pipes to ensure the construction environment and construction quality. In order to avoid problems such as overflow of sewage in the upstream pipeline due to water stoppage in the repair construction section, it is necessary to install pipe plugs in the upstream section of the repair construction section, and erect temporary water pump facilities on the road surface to pass the sewage in the upstream pipeline through the facility Discharge into the pipeline downstream of the repair construction section to ensure smooth drainage of sewage. [0003] The traditional temporary drainage device is to install a pipe plug in the ups...

AI Technical Summary

Problems solved by technology

In this way, the pipelines for the temporary discharge of sewage across the two pipe sections are set on the roads of the city, which will seriously affect the city's appearance and traffic. Under the premise of construction safety, how to shorten the length of the temporary discharge pipeline installed on the ground, and even arrange the temporary discharge pipeline inside the pipeline to be repaired that only needs partial repair, and arrange the sewage inside the pipeline in a convenient, quick and cost-effective way The patency of the

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