Device and method for measuring temperature rise efficiency of low-state compression component

Abstract

The invention discloses a device and a method for measuring the temperature rise efficiency of a low-state compression component, and belongs to the field of measurement of key performance parametersof engine components. The device comprises a voltage stabilizing box platinum resistance temperature sensor, an inlet temperature sensor, an outlet temperature sensor, thick wires, thin wires, a shielding cover and a sensor shell. The inlet temperature sensor and the outlet temperature sensor adopt double-wire multi-point single-shielding structures, and static errors of thermocouple wires are reduced through dense distribution of the temperature sensors; meanwhile, double-wire epitaxy is adopted, so that the heat conduction error of the temperature sensors is reduced, and the accuracy of a temperature measurement result is improved; corresponding measuring points of the inlet temperature sensor and the outlet temperature sensor adopt the thermocouple wires manufactured in the same batch,and different measuring points adopt the thermocouple wires manufactured in different batches, so that the measurement results of different measuring points are free of correlation caused by the thermocouple wires, and the measurement uncertainty is reduced; and the measurement uncertainty of temperature rise efficiency can be reduced by adopting the methods such as reverse cascade and thermo wiredecorrelation between measuring points.

Description

technical field [0001] The invention relates to a device and method for measuring key performance parameters of engine components, in particular to a device and method for measuring the temperature rise efficiency of engine compression components in a low state, and belongs to the field of measuring key performance parameters of engine components. Background technique [0002] At present, the temperature rise efficiency of the compression parts of the engine in the low state is measured by the sub-measurement method, that is, a temperature sensor is arranged at the inlet of the surge tank or the compression part to measure the inlet temperature, and a temperature sensor is arranged at the outlet of the compression part to measure the outlet temperature. Due to the existence of various errors such as static graduation error, speed error, and heat conduction error of the temperature sensor sensitive element, the error of the temperature measurement result is large, which in tur...

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Problems solved by technology

Due to the existence of various errors such as static graduation error, speed error, and heat conduction error of the temperature sensor sensitive element, the error of the temperature measurement result is large, which in turn affects the accuracy of the temperature rise efficiency, so that the key performance parameters of the engine compression components cannot be obtained accurately. evaluation of

In the fields of aero engines, gas turbines, etc., the requirements for the measurement accuracy of key performance parameters of components are getting higher and higher, but for the temperature rise efficiency of compression components under low conditions, there is still a lack of accurate and effective measurement methods

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