Detection device and detection method for detecting tenon staggered teeth of turbine blade

Abstract

The invention relates to a detection device and a detection method for detecting the tenon staggered teeth of a turbine blade. The device comprises a bottom plate. A support plate is fixedly arranged on the bottom plate. The support plate is provided with a fixed tooth-shaped block and an elastic tooth-shaped block which are used for being matched with each other to compress the tenon of the turbine blade. The opposite side surfaces of the fixed tooth-shaped block and the elastic tooth-shaped block are provided with tooth profiles matched with the tenon of the turbine blade. The upper end of the elastic tooth-shaped block is fixedly connected with the support plate. The side surface of the elastic tooth-shaped block, with its back onto the fixed tooth-shaped block, is connected with a compression device. A sliding plate capable of sliding is arranged on the bottom plate. A lever and a gauge clamp used for being connected with a dial indicator are installed on the sliding plate. The lever is of a right-angle turning-shaped structure composed of a transverse rod and a vertical rod, wherein the end part of the transverse rod can be abutted against the tenon of the turbine blade. The end part part of the vertical rod is connected with the dial indicator. According to the technical scheme of the invention, during usage, all the teeth of the tenon of the turbine blade can be positioned. The entire blade body and the blade crown part of the turbine blade are suspended to push the detection sliding plate for detection. Therefore, the operation is simple and convenient, and detection data are stable and reliable.

Description

【Technical field】 [0001] The invention relates to the field of detection of tenon-tooth misalignment of turbine blades of a gas turbine engine, and in particular to a detection device and method for detection of tenon-tooth misalignment of turbine blades. 【Background technique】 [0002] Turbine components are one of the three core components of aero-engines. They are the parts of the entire engine that are subject to the highest temperature and load. They are subject to large and complex stresses at high temperatures, so the requirements for their materials are extremely stringent. The turbine blades are located behind the combustion chamber of the engine, including the turbine guide and the turbine blades, which have a very sensitive influence on the main performance indicators of the engine, such as: fuel consumption, turbine inlet temperature, turbine speed, engine thrust, etc., the tenon of the turbine working blade Tooth is the key part of turbine blade machining and te...

AI Technical Summary

Problems solved by technology

During the positioning, due to the changeable appearance design of the turbine working blades in recent years, the positioning is cumbersome, and the influence of the casting deviation makes the positioning of the blades unstable, and the repeatability is extremely poor when pushing the blades and clamping the blades, which cannot meet Inspection and processing of turbine working blades for aviation or gas turbines

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