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Centrifugal impeller inner chamber size test fixture and test method

A centrifugal impeller and size detection technology, which is applied in the field of aero-engines, can solve the problems of parts cutting and inaccurate detection results, and achieve the effect of simple detection process, accurate detection results and integrity assurance

Active Publication Date: 2018-01-12
CHINA HANGFA SOUTH IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a fixture and a detection method for detecting the inner cavity size of a centrifugal impeller, in order to solve the existing technical problems that the existing closed centrifugal impeller inner cavity size needs to be cut and the detection result is inaccurate

Method used

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  • Centrifugal impeller inner chamber size test fixture and test method
  • Centrifugal impeller inner chamber size test fixture and test method
  • Centrifugal impeller inner chamber size test fixture and test method

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Embodiment Construction

[0038] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0039] like figure 1 and figure 2 As shown, the present invention discloses a fixture for detecting the inner cavity size of a centrifugal impeller. The centrifugal impeller 1 has an inner cavity surrounded by a wheel disc 11 and a first outer cover 12. In the circumferential direction, the inner cavity is divided into a plurality of blades 13 that are not connected to each other. The clamp of the present invention includes a hollow cylindrical second housing 2 for being sleeved on the outside of the centrifugal impeller 1. The second housing 2 includes The first section 21 for abutting against the end of the air inlet end of the inner cavity, and the second section 22 for abutting against the end of the air outlet end of the inner cavity; the cla...

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Abstract

The invention discloses a fixture for detecting the size of the inner chamber of a centrifugal impeller, which includes a second outer cover for being fitted outside the centrifugal impeller, the second outer cover includes a first section for abutting against the end of the inlet end of the inner cavity, and A second segment for abutting against the end of the gas outlet end of the lumen; the clamp also includes a second segment for snapping between the gas outlet end of the lumen and the second segment to seal the gas outlet end of the lumen and to hold the adjacent airway in The sealing seat that is cut off at the gas outlet end of the chamber. The fixture of the invention has a simple structure and is easy to assemble; it will not cause damage to the complex inner cavity of the closed centrifugal impeller. The invention also discloses a method for detecting the size of the inner cavity of the centrifugal impeller, which includes the following steps: S1: installing the fixture on the centrifugal impeller; S2: pouring molten filling material into the inner space formed by the inner cavity of the centrifugal impeller and the fixture ; S3: take out the filling material in the inner space and form the cast body after cooling; S4: measure the size of the cast body. The detection method of the invention has simple operation and accurate detection results.

Description

technical field [0001] The invention relates to the field of aero-engines, in particular to a fixture for detecting the inner cavity size of a centrifugal impeller. In addition, the invention also relates to a method for detecting the inner cavity size of the centrifugal impeller. Background technique [0002] The closed centrifugal impeller is one of the core machines of the gas turbine engine. The structure of the existing closed centrifugal impeller is as follows: figure 1 As shown, it generally includes a rotating shaft 14, a wheel 11 installed on the rotating shaft 14, a blade 13 installed on the wheel 11, and a first cover 12 outside the blade 13, wherein the wheel 11 and the second An inner cavity is formed between the outer covers 12 . [0003] The working speed of the closed centrifugal impeller is as high as tens of thousands of revolutions, so it needs to withstand extremely high centrifugal loads. The thickness of the blade 13 and the chamfering of the connecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/00
Inventor 黄谭喜卢伟
Owner CHINA HANGFA SOUTH IND CO LTD
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