CN-121994138-A - Structure and method for measuring angle of adjustable stator blade and aero-engine compressor

CN121994138ACN 121994138 ACN121994138 ACN 121994138ACN-121994138-A

Abstract

The invention provides an adjustable stator blade angle measurement structure and method and an aeroengine compressor, and relates to the technical field of aeroengines. The adjustable stator blade angle measurement structure comprises a gear piece, a tooth condition, a sliding rail piece and a linear displacement sensor. The gear piece is fixedly connected to the adjustable stator blade and synchronously rotates along with the adjustable stator blade, in other words, the rotation angle of the gear piece is the rotation angle of the adjustable stator blade. Tooth condition slidable mounting is on the slide rail spare, and rack spare and gear meshing, so under gear pivoted condition, can drive tooth condition and slide along the slide rail spare, and linear displacement sensor is used for detecting the sliding distance of tooth condition, so converts the angle measurement of adjustable stator blade into the measurement of the sliding distance of tooth condition, and this measurement mode is higher than the mode precision that directly adopts angle displacement sensor to measure the rotation angle of adjustable stator blade, and the space that occupies is less moreover, is convenient for satisfy the demand of equipartition.

Inventors

YANG WEIQI
LIN QINGSONG
XIAO YARU
YE WENXUN
YANG PING
CHEN MEINING
FENG JINZHANG

Assignees

中国航发商用航空发动机有限责任公司

Dates

Publication Date: 20260508
Application Date: 20241105

Claims (9)

1. The adjustable stator blade angle measurement structure is used for measuring the rotation angle of an adjustable stator blade and is characterized by comprising: The gear piece is fixedly connected to the adjustable stator blade and synchronously rotates along with the adjustable stator blade; A tooth condition, the rack member being meshed with the gear member; The rack piece is arranged on the sliding rail piece in a sliding way, the rack piece is driven to slide relative to the sliding rail piece under the condition that the gear piece rotates, and And the linear displacement sensor is used for detecting the sliding distance of the rack piece.
2. The adjustable stator vane angle measurement structure of claim 1, wherein, The adjustable stator blade angle measurement structure further comprises a casing, the adjustable stator blade is rotatably arranged on the casing, and the sliding rail piece is fixedly connected to the casing through a fixed base.
3. The adjustable stator vane angle measurement structure of claim 2, wherein, The casing is provided with a circumferential direction and an axial direction, a plurality of adjustable stator blades are distributed along the circumferential direction of the casing, and the fixed base is fixedly connected to one side of the adjustable stator blades along the axial direction of the casing.
4. The adjustable stator vane angle measurement structure of claim 3, wherein, The rack member is flush with the upper end surface of the gear member.
5. The adjustable stator vane angle measurement structure of claim 2, wherein, The fixed base extends along the radial direction of the casing, one end of the fixed base is fixedly connected with the casing, the other end of the fixed base is fixedly connected with the sliding rail piece, and the fixed base is perpendicular to the sliding rail plane of the sliding rail piece.
6. The adjustable stator vane angle measurement structure of claim 1, wherein, The linear displacement sensor is fixedly connected to the sliding rail piece and is positioned on one side of the sliding direction of the rack piece.
7. The adjustable stator vane angle measurement structure of claim 1, wherein, The sliding rail piece is provided with a first side and a second side which are opposite, the first side is provided with a first sliding groove, the second side is provided with a second sliding groove, two sides of the rack piece are respectively provided with a first sliding lug and a second sliding lug, the first sliding lug is in sliding fit with the first sliding groove, and the second sliding lug is in sliding fit with the second sliding groove.
8. An aeroengine compressor, which is characterized in that, The aircraft engine compressor comprising an adjustable stator vane angle measurement structure according to any one of claims 1-7.
9. An adjustable stator vane angle measurement method, which is realized based on the adjustable stator vane angle measurement structure as set forth in any one of claims 1 to 7, comprises: Acquiring the sliding distance of the rack piece; and calculating the rotation angle of the adjustable stator blade according to the sliding distance and the radial dimension of the gear piece.

Description

Structure and method for measuring angle of adjustable stator blade and aero-engine compressor Technical Field The invention relates to the technical field of aeroengines, in particular to an adjustable stator blade angle measuring structure and method and an aeroengine compressor. Background The adjustable stator blade is an important part of an aeroengine compressor, and in order to ensure that the high-pressure compressor has sufficient surge margin, the blade mounting angle of the adjustable stator blade is required to be adjusted according to working conditions in actual work so as to ensure air inflow and control air flow direction. The adjustable stator blade changes the rotation angle through the adjustment mechanism, and in cold test verification, the relation between the motion travel of the actuator cylinder and the angle change of the adjustable stator blade is obtained through the actuator cylinder pressurizing test, so that the application of the adjustable stator blade in the operation of the high-pressure compressor can be better supported. In the cold test, due to assembly errors and the like, the movement angles of all rocker arms in the same stage can have errors, so that a certain number of angular displacement sensors are required to be circumferentially and uniformly arranged on 0-4-stage adjustable stator blade journals in sequence. However, the angular displacement sensor has a large volume, is often limited by an external space, cannot meet the requirement of circumferential uniform distribution, and is complex to install. Due to the limitation of the installation position and the measurement error of the angular displacement sensor, the final data may deviate in the actual test, and the accurate measurement data cannot be obtained. Disclosure of Invention The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later. The invention aims to provide an adjustable stator blade angle measurement structure which can solve the technical problem of low angle measurement data precision in the prior art. The invention also aims to provide an adjustable stator blade angle measurement method which can solve the technical problem of low angle measurement data precision in the prior art. The invention also aims to provide an aeroengine compressor which can solve the technical problem of low accuracy of angle measurement data in the prior art. Embodiments of the present invention may be implemented in the following manner: An adjustable stator blade angle measurement structure for measuring a rotational angle of an adjustable stator blade, the adjustable stator blade angle measurement structure comprising: The gear piece is fixedly connected to the adjustable stator blade and synchronously rotates along with the adjustable stator blade; A tooth condition, the rack member being meshed with the gear member; The rack piece is arranged on the sliding rail piece in a sliding way, the rack piece is driven to slide relative to the sliding rail piece under the condition that the gear piece rotates, and And the linear displacement sensor is used for detecting the sliding distance of the rack piece. Optionally, the adjustable stator blade angle measurement structure further comprises a casing, the adjustable stator blade is rotatably installed on the casing, and the sliding rail piece is fixedly connected to the casing through a fixed base. Optionally, the casing has circumference and axial, a plurality of adjustable stator blade is followed the circumference of casing distributes, unable adjustment base fixed connection is in adjustable stator blade is followed one side of axial of casing. Optionally, the rack member is flush with an upper end surface of the gear member. Optionally, the fixing base extends along the radial direction of the casing, one end of the fixing base is fixedly connected with the casing, the other end of the fixing base is fixedly connected with the sliding rail piece, and the fixing base is perpendicular to the sliding rail plane of the sliding rail piece. Optionally, the linear displacement sensor is fixedly connected to the sliding rail member and is located at one side of the sliding direction of the rack member. Optionally, the sliding rail piece is provided with a first side and a second side which are opposite, the first side is provided with a first sliding groove, the second side is provided with a second sliding groove, two sides of the rack piece are respectively provided with a first sliding lug and a second sliding lug, the first sliding lug is in sliding fit