Safety blowdown and discharge tool of ball valve DN100 and below for natural gas pipeline

Abstract

The invention relates to a safety blowdown and discharge tool of a ball valve DN100 and below for a natural gas pipeline. The safety blowdown and discharge tool comprises a locating frame and a safetydetection discharge pipe group; the safety detection discharge pipe group is used for safely discharging gas exhausted from a drain outlet of a drain valve, and the air inlet end of the safety detection discharge pipe group is fixed to one end of the locating frame, and extends into the locating frame; the exhaust end of the safety detection discharge pipe group communicates with a collection container; the other end of the locating frame is provided with a locating head extending into the locating frame, and the locating head can be moved relative to the locating frame to approach to or keepaway from the air inlet end of the safety detection discharge pipe group; and a drain nozzle of the ball valve is clamped between the air inlet end of the safety detection discharge pipe group and alocating threaded head, and a drain outlet of the drain nozzle is in butt joint and communicates with the air inlet end. The tool has the advantages of reliable performance, the simple structure, andtime and labor saving in work, and is easy to carry; and the pressure value of a valve cavity can be measured accurately, and the purpose of quick and safe blowdown is achieved.

Description

technical field [0001] The invention relates to natural gas sewage discharge detection equipment, in particular to a safe sewage discharge tool for ball valves below DN100 for natural gas pipelines. Background technique [0002] At present, the ball valves below DN100 in the gas transmission station have problems such as loud blowdown airflow, undetermined blowdown pressure, inaccurate judgment of valve internal leakage, airflow impact damage, and difficulty in collecting discharge, especially when the blowdown nozzle of the valve is restricted. When there is too much space, it is very easy to have problems such as difficulty in controlling the opening force of the sewage plug. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a safe sewage discharge tool for ball valves below DN100 for natural gas pipelines, which effectively overcomes the defects of the prior art. [0004] The technical solution of the present i...

AI Technical Summary

Problems solved by technology

[0002] At present, the ball valves below DN100 in the gas transmission station have problems such as loud blowdown airflow, undetermined blowdown pressure, inaccurate judgment of valve internal leakage, airflow impact damage, and difficulty in collecting discharge, especially when the blowdown nozzle of the valve is restricted. When there is too much space, it is very easy to have problems such as difficulty in controlling the opening force of the sewage plug

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