Gas pipe pressure tapping opening connection method

Abstract

The invention belongs to the technical field of gas pipe maintenance methods, and provides a gas pipe pressure tapping opening connection method which is used for conducting pressure tapping opening connection on gas pipes. According to the technical scheme, blind holes are formed in the pipe wall of a gas pipe along the tapping periphery and connected to form a tapping groove, a short pipe is welded and a sluice valve is mounted outside the tapping periphery, the lower end of a lead screw penetrates through the sluice valve to jack off the pipe wall in the middle of the tapping periphery, and the sluice valve is turned off after the jacked off pipe wall is taken out of the sluice valve. The gas pipe pressure tapping opening connection method is simple in operation, safe and reliable, the tedious processes of gas supply stop and blowing, replacement and the like of the whole gas pipe are avoided, the overhauling time and overhauling staff are reduced greatly, labor intensity is lowered, and the construction cost is saved. By means of the method, a traditional gas pipe connecting method is broken through, the method is an innovation of online gas pipe connection, the problems that gas pipe construction is restricted for a long time, and the gas supply stop and supply delay time is long are solved, production continuity is guaranteed, and economical benefits of enterprises are increased.

Description

technical field [0001] The invention relates to a method for opening a hole interface under pressure in an online gas pipeline, and belongs to the technical field of gas pipeline maintenance methods. Background technique [0002] Gas pipeline is an important energy transmission equipment for iron and steel enterprises. In the process of use, the situation that the branch pipe needs to be connected on the gas pipeline due to the change of the production situation occurs from time to time. The traditional method needs to shut down the entire gas pipeline to be constructed, and use steam or nitrogen to purge it to pass the construction before construction, and after the construction is completed, it needs to be purged and replaced before the gas can be supplied. The whole process of shutting down the gas takes a long time, which has a relatively large impact on related processes. Large, affecting the continuity of enterprise production and using a large amount of steam or nitr...

AI Technical Summary

Problems solved by technology

The traditional method needs to shut down the entire gas pipeline to be constructed, and use steam or nitrogen to purge it to pass the construction before construction, and after the construction is completed, it needs to be purged and replaced before the gas can be supplied. The whole process of shutting down the gas takes a long time, which has a relatively large impact on related processes. Large, affecting the continuity of enterprise production and using a large amount of steam or nitrogen, energy consumption is also large

So far, this traditional construction method has not been changed, which has caused a great impact on the production of iron and steel enterprises, but has not been effectively solved. In order to reduce the impact of changing the gas line on production, it is very necessary to study an online operation A New Method of Opening Connections of Gas Pipelines under Pressure

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