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Inlet variable camber guide vane structure capable of eliminating rotary boss

A technology of rotating bosses and guide vanes, used in combustion engines, machines/engines, stators, etc., can solve problems such as aerodynamic losses, and achieve the effect of avoiding aerodynamic losses

Active Publication Date: 2022-05-24
AECC SICHUAN GAS TURBINE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of this, the embodiment of the present application provides an inlet variable camber guide vane structure that can eliminate the rotating boss, at least partially solving the existing problem in the prior art that the turning surface of the front part of the adjustable guide vane body will be convex when rotating. The fixed strut blade body tail profile produces a rotating boss, resulting in serious aerodynamic loss

Method used

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  • Inlet variable camber guide vane structure capable of eliminating rotary boss
  • Inlet variable camber guide vane structure capable of eliminating rotary boss
  • Inlet variable camber guide vane structure capable of eliminating rotary boss

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Embodiment Construction

[0041] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0042] The embodiments of the present application are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. The present application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments may be combined with each other under the condition of no conflict. Based on the embodiments ...

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Abstract

The inlet variable camber guide vane structure capable of eliminating the rotating boss comprises a fixed supporting plate and an adjustable guide vane, the fixed supporting plate comprises a vane body, a supporting plate head and an inner ring front section, an inwards-concave semicircular groove is formed in the tail portion of the vane body of the fixed supporting plate, and the adjustable guide vane comprises a vane body, an inner journal and an outer journal. A semicircular protrusion protruding outwards is arranged on the front portion of a blade body of the adjustable guide blade, the semicircular groove and the semicircular protrusion are matched to form a rotation pair, the rotation radius of the semicircular groove is larger than the radius of the semicircular protrusion, and a rotating shaft of the fixed supporting plate and a rotating shaft of the adjustable guide blade are both straight lines from the blade tip to the blade root. A knuckle bearing installation groove is formed in the supporting plate head, a knuckle bearing with a kidney-shaped installation base is installed in the knuckle bearing installation groove, the knuckle bearing comprises a knuckle ball and the kidney-shaped installation base, the size of the kidney-shaped installation base in the transverse axis direction is larger than the size of the kidney-shaped installation base in the longitudinal axis direction, and the knuckle ball is eccentrically installed in the transverse axis direction of the kidney-shaped installation base. A rotary boss is eliminated, and pneumatic loss is reduced.

Description

technical field [0001] The present application relates to the technical field of aviation turbofan engines, and in particular, to an inlet variable camber guide vane structure that can eliminate rotating bosses. Background technique [0002] The small bypass ratio turbofan engine usually adopts the imported variable camber guide vane structure, which consists of two parts: the fixed support plate and the adjustable guide vane. The shaft journal and the blade body are formed, and are installed on the intake bearing frame through the inner and outer journals. In order to reduce the aerodynamic loss and ensure that the transition area between the outer journal of the adjustable guide vane and the blade tip has sufficient rigidity, the diameter of the outer journal is usually selected to be larger than the maximum thickness of the blade tip. The guide vane is smoothly installed in place, and it may interfere with the tail of the fixed support plate. There are generally three w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D9/02F01D9/04
CPCF01D9/02F01D9/041F01D9/042Y02T10/12
Inventor 张万东邓杨王永明格桑央珍张强
Owner AECC SICHUAN GAS TURBINE RES INST
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