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Stator vane limit device and limit method

A technology of a stator blade and a limiting device is applied in the stator blade limiting device and the limiting field of the stator blade, which can solve the problems of engine rotor stuck and the like.

Active Publication Date: 2021-08-06
CHINA HANGFA SOUTH IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a stator blade limiting device and a limiting method to solve the technical problem that the existing stator blade limiting device sinks and causes the engine rotor to be stuck

Method used

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  • Stator vane limit device and limit method
  • Stator vane limit device and limit method
  • Stator vane limit device and limit method

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Embodiment Construction

[0023] 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 various ways defined and covered below.

[0024] figure 1 is a schematic structural view of the stator vane limiting device in a preferred embodiment of the present invention; figure 2 It is a schematic diagram of the first installation structure of the stator blade limiting device according to the preferred embodiment of the present invention; image 3 It is a schematic diagram of the installation structure of the stator blade limiting device of the preferred embodiment of the present invention.

[0025] like figure 1 As shown, a stator vane limiting device of this embodiment is used for axially limiting the stator vane 200 installed on the turbine case 100, the outer end of the stator vane 200 is installed on the turbine case 100, and the stator vane 200 The inner end of the stator blade is installe...

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Abstract

The invention discloses a stator vane limiting device and a limiting method, which are used for axially limiting a stator vane installed on a turbine case. The outer end of the stator vane is installed on the turbine case, and the inner end of the stator vane is installed On the stator vane limiting device, it includes a limiting cylinder with a corrugated section, a first installation structure for installing the inner end of the stator blade on the first end of the limiting cylinder, and a second end of the limiting cylinder. The second installation structure for installing the limit tube on the mounting seat in the combustion chamber casing; the corrugated section of the limit tube is compressed in the axial direction, and the limit tube is interference-fitted on the combustion chamber through the second installation structure. Between the chamber casing and the stator vane, the corrugated section stretches axially to adapt to the change in the axial distance between the stator vane and the combustion chamber casing.

Description

technical field [0001] The invention relates to the technical field of aero-engines, in particular to a stator blade limiting device, and furthermore, to a stator blade limiting method. Background technique [0002] In a turboprop engine, the turbine is divided into two parts, the rotor and the stator. The stator assembly (also known as the turbine guide) mainly includes the turbine casing and the stator blade. The outer end of the stator blade is connected to the turbine casing, and the inner end of the stator blade connects the front half of the inner casing to the second half of the inner casing through screws. The box-shaped part formed after connecting the parts is supported and fixed, and the inner surface of the inner casing is provided with a graphite layer that is sealingly matched with the rotor. Since the turbine guide is in a long-term vibration environment during the working process of the engine, an axial gap is generated between the front half of the inner ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D9/04
CPCF01D9/041F01D9/042
Inventor 倪慧妍杨春华马立恒姜玫竹李朝坤
Owner CHINA HANGFA SOUTH IND CO LTD