FIELD: instrument engineering.
SUBSTANCE: invention relates to turbine expander control device, installed on gas distributing station between high-pressure and low-pressure lines. Device comprises a stop valve, first and second regulators with drives and position sensors, a bypass valve, switch of operation modes, adder, first, second and third comparison units, setter of pressure value in low pressure line, external electric mains load sensor, frequency converter, filter and rectifier.
EFFECT: high reliability of the turbine expander and accuracy of maintaining gas pressure in the low pressure line by correcting high pressure gas value supplied to turbine expander depending on change in electrical mains load.
1 cl, 1 dwg
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