FIELD: machine building.
SUBSTANCE: jet device for measurement of a ratio of absolute pressures relates to automatic control equipment and in particular to jet pneumatic automatic equipment and may be used in systems of control of air relief valves and guide vanes of a compressor of a gas turbine engine. It comprises a sensitive element with a supply channel, a receiving channel and a nozzle division chamber, connected to a channel of comparison element control with an inclined supply channel. The angle of inclination of the axis of the supply channel relatively to the longitudinal axis of the comparison element towards the side of the control channel connected with the low pressure source is less than the angle of inclination of outlet channels of the device.
EFFECT: increased accuracy of measurement of a ratio of absolute pressures, which in its turn improves quality of control of compressors of gas turbine engines.
4 dwg
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