METHOD FOR MEASUREMENT OF GAS FLOW THROUGH UNTIGHT GATE OF CLOSED BALL VALVE OF STOP AND CONTROL VALVES OF MANIFOLD PIPELINE AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2010 - IPC F17D5/02 G01F1/00 G01M3/00 

FIELD: transportation.

SUBSTANCE: in method, which consists in connection of drain tube to cavity of valve and measurement of static pressures in pipelines of high and low pressures, and also in cavity of ball valve, additionally high pressure pipeline is connected to drain tube, and in established mode gas flow is measured in it through seal between valve cavity and low pressure pipeline, then low pressure pipeline is connected with further measurement of gas flow in drain tube through seal between high pressure pipeline and cavity of ball valve. Device additionally comprises pulse tubes of high and low pressures, the first and second flow metres and third stop valve, besides high pressure pulse tube is installed between high pressure pipeline and drain tube, and low pressure pulse tube - between drain tube and low pressure pipeline, besides the first flow metre with according stop valve are serially installed in the first pulse tube, and the second flow metre with according stop valve are serially installed in the second pulse tube.

EFFECT: possibility to separately measure flows through seals of stop and control valves by direct method with the help of flow metres.

7 cl, 1 dwg