Stator blade limiting device and limiting method
A technology for stator blades and limit devices, which is applied in the field of stator blade limit devices and stator blade limits, can solve problems such as engine rotor sticking, and achieve the effect of ensuring normal operation
Active Publication Date: 2019-09-10
CHINA HANGFA SOUTH IND CO LTD
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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
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[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] Such as 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 insta...
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Abstract
The invention discloses a stator blade limiting device and a limiting method. The stator blade limiting device is used for axially limiting a stator blade installed on a turbine box, the outer end ofthe stator blade is arranged on the turbine box, and the inner end of the stator blade is arranged on the stator blade limiting device; the stator blade limiting device comprises a limiting cylinder with a corrugated section, a first installing structure and a second installing structure, wherein the first installing structure is arranged at the first end of the limiting cylinder and is used forinstalling the inner end of the stator blade, and the second installing structure is arranged on the second end of the limiting cylinder and is used for installing the limiting cylinder on a installing base in a combustion chamber box. The corrugated section of the limiting cylinder is compressed along the axial direction, and the limiting cylinder is arranged between the combustion chamber box and the stator blade in an interference mode through the second installing structure, so as to adapt to the change of the axial distance between the stator blade and the combustion chamber box through the corrugated section along the axial direction.
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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Login to View More 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