VALVE STATE MONITORING METHOD AND DEVICE Russian patent published in 2014 - IPC F16K37/00 G05B23/00 

Abstract RU 2509944 C2

FIELD: machine building.

SUBSTANCE: according to the invention, a point in the process is considered in the method and in the device, when state and performance of a distributing valve is followed up. At monitoring of the valve state, process measurements are used in addition to measurements inside valve (LF) so that process measurements identify working point ("Др"valve, hvalve, ps), at which the valve operates, and those measurements inside the valve are observed at those working points to detect changes and to determine the valve state. In compliance with the invention aspect, variables ("Др"valve, hvalve, ps) representing the working point of a production process are considered when load changes are observed, which are related to friction of the valve, and/or changes in power drive load factor (LF).

EFFECT: improving measurement accuracy.

22 cl, 8 dwg

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RU 2 509 944 C2

Authors

Pjuetsija Jouni

Sederlef Kharri

Friman Mats

Dates

2014-03-20Published

2010-01-04Filed