Method and device for replacing pipe section or valve on water supply pipeline without water stopping

Abstract

The invention provides a method and a device for replacing a pipe section or a valve on a water supply pipeline without water stopping. The method comprises the following steps that pipeline flange plates and a pipeline cutting beveling machine are installed on the two sides of the to-be-placed pipeline or the valve, a pipeline seal bin is installed, thus the to-be-placed pipeline or the valve is located in a lower seal bin body of the pipeline seal bin, the to-be-placed pipeline is cut and beveled, and the replaced pipeline and the pipeline cutting beveling machine are taken out; and a connecting pipe fitting is placed into an upper seal bin body, the two ends of the connecting pipe fitting are connected with the pipeline flange plates on the two sides of the pipeline correspondingly, continuous action of the connecting pipe fitting and the pipeline flange plates is kept, the pipeline seal bin is detached, and the two ends of the connecting pipe fitting are fixed to the pipeline flange plates on the two sides correspondingly. With the adoption of the technical scheme, the partial pipe section or the valve is replaced without water stopping, and through the method, no opening is formed in the original water supply pipeline and no damage is caused to other structures while uninterrupted water supply is ensured.

Description

technical field [0001] The invention belongs to the technical field of pipeline maintenance, and in particular relates to a method and a device for realizing replacement of pipe sections or valves on a water supply pipeline without stopping water supply. Background technique [0002] The water supply network cannot be avoided due to the collision of the pipes in the new construction and relocation of the urban water supply network, the replacement of the valves on the water supply pipeline, or the sampling and testing of the pipes on the running water supply pipeline. If the valve is not closed tightly, it will inevitably lead to the expansion of the scope of water cut-off, the long time of water cut-off, the lack of water available for users, and the serious impact on the production of the water plant. This will have a bad social impact on the water company, and even cause residents , The direct economic loss of the production enterprise; if the operation is not performed p...

AI Technical Summary

Problems solved by technology

This theoretical method will destroy the pipeline, leaving a pipe tee on both sides of the replaced pipe section and valve, and the airbag in the method has risks in overcoming water pressure and other problems, and the required operating space is relatively large , high cost, and extremely difficult to implement

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