RU21811U1 - GAS-TURBINE ENGINE COMPRESSOR SURVEILLANCE DEVICE - Google Patents

Description

GAS-TURBINE ENGINE COMPRESSOR SURVEILLANCE DEVICE

The utility model relates to the field of regulation of compressors with a flashing movement of the working bodies, in particular, to systems for eliminating surge in the compressor of a gas turbine engine.

A DEVICE is known for signaling surging of a compressor of a gas turbine engine, comprising a sensor mounted on the engine housing with a camera located in its housing and divided by a membrane into two cavities, one of which is connected to the receiver of the full pressure receiver and the other to the receiver of the static pressure. However, the sensor and the full and static pressure tubes MAY be destroyed due to its vibrations coming to them through the engine HOUSING.

The objective of the utility model is to reduce the level of vibration coming from the engine housing to a sensor mounted on a nickname.

This problem is achieved by the fact that in the device for signaling the surge of the compressor of a gas turbine engine, comprising a sensor mounted on the engine housing with a camera located in its housing, divided by a membrane into two cavities, one of which is connected to the receiver tube of the full pressure and the other to the receiver tube of the static pressure through pipes with corrugated sections, a shock absorber is installed in it between the sensor HOUSING and the engine HOUSING, and the sensor cavities are connected to the receiver tubes full and static pressure through nozzles with corrugated sections.

What is new here is that a shock absorber is installed between the HOUSING of the sensor and the HOUSING of the engine, and the cavities of the sensor are connected to the tubes of the receivers of full and static pressure through pipes with corrugated sections.

By installing an absorber between the sensor housing and the CASE of the engine, we sharply reduce the level of harmful vibrations entering the CASE of the sensor.

NKI Road 27/0

With NLBF sections we reduce the probability of membrane destruction when the level of gas flow pulsations in the compressor is exceeded.

All this means that the probability of destruction of the sensor decreases, the resource of its work increases, and its readings become more reliable.

The shock absorber itself can be made in the form of a plate of rubber-like material.

The drawing shows a longitudinal section of the device.

The DEVICE for signaling the surge of the compressor of a gas turbine engine contains a chamber 3 located in the sensor housing 1 of the g sensor, divided by a membrane 4 into two cavities 5 and 6. A cavity 5 is connected through a corrugated pipe 7 to a full pressure receiver pipe 8, and a cavity b is connected through a corrugated pipe 9 to the receiver tube of static pressure 10. The receiver tubes 6 and 10 connect the cavity 5 and 6 with the flow part of the compressor and. The membrane 4 is mechanically connected to the heart 12 of the electromagnet 13. The winding 14 of the electromagnet 13 is connected to the SECONDARY device 15. HOUSING 1 of the sensor 2 is mounted on the motor housing 16 through a shock absorber 17 made in the form of a rubber plate.

The device operates as follows.

Depending on the magnitude and sign of the air velocity head in the cross-section of the FLOWING part of the compressor 11, a difference in pressure changes in cavities 5 and 6, due to which the membrane 4 is proportional to the pressure difference. Membrane 4, in turn, biases the core 12 of electromagnet 13 and c its winding 14 to the secondary device 15 receives a signal proportional to the difference in the velocity pressure of the air of the receiver tubes of full 6 and static 10 pressure. By the magnitude of the signal to the SECONDARY device 15 judge the presence of surge. The vibrations coming to the sensor r from the engine casing 16 are partially damped by the shock absorber 17, and the pressure pulsations of the gas flow in the compressor are damped by corrugated pipes 7 and 9.

All this significantly increases the life of the surge sensor.

Sources of information:

- g

Claims (2)

1. A device for signaling surging compressor of a gas turbine engine, comprising a sensor mounted on the engine housing with a camera located in its housing, divided by a membrane into two cavities, one of which is connected to the tube of the receiver of full pressure, and the other to the tube of the receiver of static pressure, characterized in that a shock absorber is installed between the sensor housing and the engine housing, and the sensor cavities are connected to the tubes of the receivers of full and static pressure through pipes with corrugated sections and. 2. The device for signaling the compressor surge according to claim 1, characterized in that the shock absorber is made in the form of a plate of rubber-like material.