Actuating mechanism for measuring exhaust temperature field of turbofan engine with small bypass ratio

Abstract

The invention relates to the technical field of aero-engine measurement, in particular to an executing mechanism for measuring an exhaust temperature field of a small-bypass-ratio turbofan engine, which is characterized in that a supporting casing is arranged, a connecting hole is formed in a central cone, and a supporting cylinder is arranged on the supporting casing, so that an external power transmission channel is formed; a power device and a vertical transmission device are arranged to transmit power into a center cone, a stator mechanism and a rotor structure are arranged in the center cone, the stator mechanism is connected with a supporting cylinder, the rotor mechanism and the stator mechanism are in running fit so as to be supported by the stator mechanism, and a gap is formed between the center cone and an engine turbine. The testing device extends to the outer side of the central cone from the gap and is driven by the power device to rotate along the central line of the engine, so that the temperature of each position of a flow field can be detected, a perfect temperature field is formed, the occupied cross sectional area of a flow channel is small, the flow field cannot be blocked, and the working condition cannot be changed; and the efficiency and the quality of temperature measurement are ensured.

Description

technical field [0001] The application belongs to the field of aero-engine temperature measurement, in particular to an actuator for measuring the exhaust temperature field of a turbofan engine with a small bypass ratio. Background technique [0002] After the gas is discharged from the combustion chamber and passes through the high-speed rotating turbine, the extremely uneven temperature field cannot be completely mixed. Therefore, the temperature field on the outlet section of the engine turbine is very inhomogeneous. Therefore, in order to better understand the distribution law of the temperature field and measure its average value more accurately, it is necessary to arrange enough circumferential and radial measuring points, which can be realized by measuring the distribution of the temperature field. [0003] For the measurement of the temperature field on the turbine outlet section of the engine, usually such as figure 1 single-point measurement in figure 2 Multi-p...

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Problems solved by technology

[0010] The purpose of this application is to provide an actuator for measuring the exhaust temperature field of a turbofan engine with a small bypass ratio, so as to solve the problem that it is difficult to simultaneously solve the circumferential unevenness of the exhaust temperature field of a turbofan engine with a small bypass ratio in the prior art and clogging problems

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