Outlet rotation measuring mechanism for turbine performance test

Abstract

The invention belongs to the field of aero-engines and gas turbines, and particularly relates to an outlet rotation measuring mechanism for the turbine performance test. The rotary motion of a rotation measuring mechanism is realized in the form of a bearing support, wherein the coaxiality and the strength of the rotation measuring mechanism are guaranteed. The problem that a rotation mechanism isclamped or damaged during the testing process is solved. Meanwhile, a hole-free integral sealing structure is adopted for the sealing design at the inner end of the mechanism, and a wiring area is isolated from a test gas area. In a relative motion area at the outer end of the mechanism, an ingenious and adjustable sealing size structure is adopted, so that the sealing size can be flexibly adjusted according to the actual assembling condition. Finally, the optimal sealing effect is achieved. The air leakage problem of the rotation measuring mechanism during the testing process is solved. Themechanism is simple in structure, easy to machine and install, good in anti-blocking effect and part damage prevention effect, and excellent in air leakage prevention effect.

Description

technical field [0001] The invention belongs to the fields of aeroengines and gas turbines, and in particular relates to an outlet rotation measuring mechanism for turbine performance tests. Background technique [0002] There is a non-uniform flow field at the outlet of the turbine components of the aero-engine and gas turbine, and the accurate measurement of the non-uniform flow field is crucial to the evaluation of the turbine performance. In order to accurately measure the non-uniform detailed flow field at the turbine outlet, the method of rotating measurement is usually used to measure the entire circumference or a periodic part of the circumferential area. Generally, the kinematic connection structure of the rotating measuring mechanism is a friction-resistant part with a small friction coefficient, such as a metal ring, a high-strength plastic ring, etc., but there are still problems such as poor coaxiality and easy jamming; in addition, due to the test The gaps bet...

AI Technical Summary

Problems solved by technology

[0004] The present invention is a rotating measuring mechanism for turbine performance test. The rotating motion of the rotating measuring mechanism is realized in the form of bearing support, which ensures the coaxiality and strength of the rotating measuring mechanism, and solves the problems of the rotating mechanism being stuck or parts damaged during the test process.

At the same time, the inner end adopts a non-porous integral sealing structure for sealing design, which isolates the wiring area from the test gas area; in the relative movement area of ​​the outer end, an ingenious adjustable sealing size structure is adopted, and the sealing size is adjusted according to the actual assembly situation Flexible adjustment; finally achieve the best sealing and sealing effect, and solve the problem of air leakage of the rotating measuring mechanism during the test

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