Hot tapping blockage pressure balancing device of fluid pipeline and method of hot tapping blockage pressure balancing device

Abstract

The invention relates to a hot tapping blockage pressure balancing device of a fluid pipeline and a method of the hot tapping blockage pressure balancing device. The balancing device comprises a connection pipe fitting, a tapping machine, an auxiliary connection pipe fitting, an auxiliary tapping machine and a gas storage tank, wherein a cavity of the connection pipe fitting is a tapping connecting box; the tapping machine and a sandwich valve are arranged in the tapping connecting box; when the sandwich valve is closed, the tapping connecting box is divided into two parts by the sandwich valve; when the sandwich valve is opened, the two parts of the tapping connecting box communicate with each other to form a whole body; a cavity of the auxiliary connection pipe fitting is an auxiliary tapping connecting box; the auxiliary tapping machine and an auxiliary sandwich valve are arranged in the auxiliary tapping connecting box; when the auxiliary sandwich valve is closed, the auxiliary tapping connecting box is divided into two parts by the auxiliary sandwich valve; when the auxiliary sandwich valve is opened, the two parts of the auxiliary tapping connecting box communicate with each other to form a whole body; and the tapping connecting box and the auxiliary tapping connecting box are connected with the gas storage tank through pipes respectively. By the balancing device and the method for tapping a high-pressure gas delivery pipe, severe shock of high pressure in a high-pressure gas pipe to a perforating machine is avoided, so that production safety and safety of operators are ensured.

Description

technical field [0001] The invention relates to a balance device, in particular to a pressure balance device for opening and sealing a fluid pipeline under pressure and a method for opening a high-pressure gas pipe with the device. Background technique [0002] In recent years, with the rapid pace of urbanization, gas has entered tens of millions of households, gas pipelines are widely laid in old cities or emerging cities, and high-pressure gas pipelines for transporting gas are also widely laid underground in cities , when such a high-pressure gas pipeline fails, in order to ensure the transmission of gas, the operator must drill holes in the high-pressure gas pipeline while the high-pressure gas pipeline is under pressure, and then replace a section of the failed pipeline as soon as possible. The pipeline for transporting gas is a high-pressure gas pipeline. When the drilling machine opens the high-pressure gas pipeline, the high pressure in the high-pressure gas pipeline...

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the rapid pace of urbanization, gas has entered tens of millions of households, gas pipelines are widely laid in old cities or emerging cities, and high-pressure gas pipelines for transporting gas are also widely laid underground in cities , when such a high-pressure gas pipeline fails, in order to ensure the transmission of gas, the operator must drill holes in the high-pressure gas pipeline while the high-pressure gas pipeline is under pressure, and then replace a section of the failed pipeline as soon as possible. The pipeline for transporting gas is a high-pressure gas pipeline. When the puncher opens the high-pressure gas pipeline, the high pressure in the high-pressure gas pipeline will have a strong impact on the puncher, and even cause an accident.

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