Rotating measurement device for outlet temperature field of aero-engine combustion chamber

Abstract

The invention discloses a rotating measurement device for an outlet temperature field of an aero-engine combustion chamber. The rotating measurement device comprises a motor and a rotating disc whichare connected through a transmission mechanism, an angle sensor and a temperature-measuring sensing head are both mounted on the rotating disc and connected with a measurement and control computer, and the measurement and control computer is sequentially connected with a motor controller and the motor; the motor drives the temperature-measuring sensing head on the rotating disc through the transmission mechanism to rotate to the set angle position, and meanwhile, the angle sensor feeds back an actual angle position signal to the measurement and control computer; and comparison is conducted through software mounted on the measurement and control computer, if adjusting is needed, an instruction is sent out, the motor controller controls the motor to move so as to reach the right angle position, and data collection is conducted. The temperature measurement device makes up the deficiency of a traditional temperature field fixed rake measurement method, the requirement for the collecting and measuring density of the outlet temperature field in an HB7485 combustion performance test is met, and the effects of shortening the test period and saving the test cost are achieved.

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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