Rotational Measurement Device for Temperature Field at the Outlet of Aero-engine Combustion Chamber

Abstract

The invention discloses a rotating measuring device for the outlet temperature field of an aero-engine combustion chamber, which includes a motor and a rotating disk connected through a transmission mechanism, an angle sensor and a temperature sensing head are installed on the rotating disk and connected with a measurement and control computer, and the measurement and control computer is connected in sequence Motor controller and motor; the motor drives the temperature sensing head on the rotating disk to rotate to the set angle position through the transmission mechanism, and at the same time, the angle sensor feeds back the actual angle position signal to the measurement and control computer; through the software installed on the measurement and control computer for comparison , if adjustment is required, an instruction is sent to the motor controller to control the motor action to achieve the correct angular position and to collect data. This temperature measuring device makes up for the shortcomings of the traditional temperature field fixed rake measurement method, realizes the requirements of the density of the outlet temperature field in the HB7485 combustion performance test, and shortens the test cycle and saves test funds.

Description

technical field [0001] The invention belongs to the technical field of testing and testing of a main combustion chamber of an aero-engine, and relates to a rotating measuring device for the outlet temperature field of an aero-engine combustion chamber. Background technique [0002] The traditional method of measuring the outlet temperature of the full-circle combustion chamber is to measure by installing and fixing a rake-type temperature sensor on the outer wall of the outlet measuring section along the circumferential direction. According to the requirements of HB7485 "Combustion Chamber Performance Test", the density of measuring points in the outlet temperature field of the medium-sized aero-engine combustion chamber must reach 1-2 points / cm2, and the blockage area of ​​the sensing part shall not be greater than 5% of the channel area. If a fixed rake-type temperature sensor is used to measure the outlet temperature, the structure of the measuring section may limit the s...

AI Technical Summary

Problems solved by technology

If a fixed rake-type temperature sensor is used to measure the outlet temperature, the structure of the measuring section may limit the spatial distribution of the sensor head mounting seat, and it is difficult to arrange a sufficient number of mounting seats required for measuring points in the circumferential direction

Even if the number of circumferential arrangements of the sensor head mounting seats can be satisfied, for the data collection of the same test state, due to the requirement of the blocking ratio, the number of sensor heads installed each time is limited, and repeated tests are required. Disassembly and transposition, and then adjust the test state to collect temperature parameters, which will lead to long test period, high cost, and poor test state stability

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