A Probe Enhanced Cooling Structure

Abstract

The invention relates to a probe reinforcing and cooling structure which can be used in the fields of ground gas turbines, aero-engines and the like. The probe reinforcing and cooling structure comprises a probe cooling baffle plate, wherein the probe cooling baffle plate is formed by adopting a metal plate forming method, and is welded on the end wall at a corresponding position where a probe extends into a main flow channel. Firstly, the probe reinforcing and cooling structure baffles a high-temperature and high-speed fluid of an incoming flow by utilizing the height of the probe cooling baffle plate; secondly, a sheltered probe sensing portion is surrounded by two low-temperature airflows near an extending-in hole of the probe, thereby realizing the cooling and temperature reducing purposes of the probe sensing portion; and thirdly, the baffle with a certain height causes a backflow flowing region of the airflows at downstream, the large backflow region of local airflows can enablethe two cooling airflows to be successfully injected into the main flow channel from the outside of the probe extending-in hole at the end wall position along with the reduction of airflow static pressure. And the injection depth and strength of the two injected cooling airflows are determined by the height design parameters of the baffle plate, thereby realizing the optimal reinforcing and cooling effects of the probe inserted at different depths.

Description

technical field [0001] The invention belongs to the fields of gas turbines, aeroengines and the like, and in particular relates to a probe enhanced cooling structure used in the fields of gas turbines, aeroengines and the like. Background technique [0002] The stable measurement of gas parameters in the main flow is a basic scientific problem with important practical engineering significance in the fields of gas turbines and aeroengines. In order to detect the running state of the machine or evaluate the efficiency attenuation of components, it is often unavoidable to set temperature and pressure measurement probes at some cross-sectional positions. [0003] In the structural design of gas turbines and aero-engines in the past, the measurement of the probe in the main channel often adopts the in-line method, that is, the measuring head of the sensing part of the measuring probe is directly inserted into the main channel through the hole in the end wall of the casing outer r...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the shortcomings and deficiencies of the prior art, in order to solve the problem that the sensing part of the probe protrudes into the mainstream channel and the temperature of the measuring head is too high due to the impact of the mainstream airflow, the present invention aims to provide a new type of probe enhanced cooling structure layout The scheme, as a novel structural design, can be applied in the fields of gas turbines, aero engines, etc.

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