Load diffuser blade damage situation inspection tool and detection method

Abstract

The invention discloses a load diffuser blade damage situation inspection tool and a detection method. The load diffuser blade damage situation inspection tool comprises an arc-shaped rod. The diameter of the inner circular arc surface of the arc-shaped rod is equal to that of the circumference where the outermost end of a blade is located. A measuring rod and a clamping block are fixedly arrangedon the inner circular arc surface. A marking rod which forwards extends is arranged on the end face, far away from the arc-shaped rod, of the measuring rod, and the total length which is obtained after the length of the measuring rod and the length of the marking rod are added is equal to the length of the blade. The separation distance between the clamping block and the measuring rod correspondsto the thickness of the outer end of the blade. When the load diffuser blade damage situation inspection tool is used for inspecting the blade, the inner circular arc surface of the arc-shaped rod abuts against the outer end of the blade, the measuring rod extends along the blade and is attached to the blade, the outer end of the blade is located between the clamping block and the measuring rod,the inspection tool is limited on the blade by the clamping block, and therefore the wind erosion situation of the front end of the blade which needs to be detected can be accurately and rapidly judged according to the relationship of the blade, the measuring rod and the marking rod.

Description

technical field [0001] The invention relates to the technical field of aircraft maintenance, in particular to a damage detection tool for blades of a load diffuser of an aviation auxiliary power unit (APU) and a detection method for detection by using the detection tool. Background technique [0002] The main function of the auxiliary power unit (Auxiliary power unit) is to provide power and air for the aircraft on the ground and in the air. 131-9 auxiliary power units are installed on Boeing 737 series or Airbus A320 series aircraft. These two types of aircraft are the two largest models in the global fleet at this stage, so there will be a large number of 131-9 series every year Auxiliary power unit to be sent to the repair shop for overhaul. [0003] During the renovation process, we found that the load section diffuser (part number: 3827054-1 / -2) of the auxiliary power unit has a very high failure rate, and the load diffuser blades need to be inspected during maintenanc...

AI Technical Summary

Problems solved by technology

In the above-mentioned structure, the space between two adjacent blades is narrow, and conventional measuring tools cannot be inserted, so it is impossible to detect, and it is also difficult to judge the size of the wind-eroded blade with the naked eye, and it is also difficult to choose the correct repair method Repairing wind-eroded blades

For the detection of the blades of the load diffuser, the manufacturer does not provide special measurement tools, which brings huge troubles to the detection work

Images