A tool for plugging a blade process hole and a plugging method thereof

Abstract

The invention discloses a tool for plugging a process hole of a blade, which comprises an outer cylinder and an inner rod slidably arranged inside the outer cylinder. The upper end of the inner rod is provided with an elastic pressing structure, and the elastic pressing structure acts on the inner rod and the outer cylinder, so that the The inner rod and the outer cylinder are elastically stretched in the axial direction; the lower end of the inner rod is provided with a collet for setting the clamping block, the diameter of the upper end face of the collet is smaller than the diameter of the lower end face of the collet, and the diameter of the lower end face of the collet is larger than that of the lower end of the outer cylinder End face diameter; when the inner rod moves down to the upper end of the collet and extends out of the outer cylinder, the lower end of the collet expands outward in the circumferential direction to release the blocking block; when the inner rod moves up to the upper end of the collet and enters the outer cylinder, the clamp The lower end of the head is squeezed by the outer cylinder wall to shrink inward in the circumferential direction to clamp the blocking block. The invention can control the pick-and-place clamping of the blocking block at the lower end of the inner rod by pressing down the upper end of the inner rod and loosening the inner rod, and the clamping is stable and not easy to fall, the operation is convenient and quick, and the blocking block can be significantly improved. Installation accuracy and installation efficiency at process holes.

Description

technical field [0001] The invention relates to the technical field of turbine engine workpiece processing, in particular to a tool for sealing blade technological holes and a sealing method thereof. Background technique [0002] Turbine blades are an important component of the turbine section in a gas turbine engine. The high-speed rotating blades are responsible for drawing high-temperature and high-pressure air into the burner to maintain the engine's work. In order to ensure stable and long-term operation in extreme high-temperature and high-pressure environments, turbine blades are often forged with high-temperature alloys and cooled in different ways, such as internal airflow cooling, boundary layer cooling, or thermal barrier coatings to protect the blades. Ensure reliability during operation. Air film cooling is an internal airflow cooling technology applied to turbine blades. It mainly designs a large number of air film holes on the leading edge of the turbine bla...

AI Technical Summary

Problems solved by technology

However, because the diameter of the blocking block is too small, it is easy to fall when clamping, and the air hole of the turbine blade is small in size and the internal space is complicated, so it is difficult for the tweezers to penetrate into the interior accurately, and it can only be achieved by relying on the experience of the assembler for many times. The blockage block is successfully placed, and the placement is often not very accurate, not only inefficiency, but also the quality of blockage is not high

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