CN-122015731-A - Method for measuring runout of honeycomb coating of stator casing of gas compressor, storage medium and computer program product

CN122015731ACN 122015731 ACN122015731 ACN 122015731ACN-122015731-A

Abstract

The invention provides a runout measuring method, a storage medium and a computer program product of a honeycomb coating of a stator casing of a gas compressor. The method for measuring the runout of the inner cavity of the stator casing of the air compressor comprises the steps of obtaining eccentric data of a spigot of the stator casing and a runout data set of a runout measuring point of the inner cavity of the stator casing, assembling the stator casing to an engine, performing runout measurement on the stator casing in an assembled engine state to obtain eccentric data of the spigot in the engine state, and converting the eccentric data of the spigot in the engine state by combining the eccentric data of the spigot of the stator casing and the runout data set of the runout measuring point of the inner cavity of the stator casing to obtain a runout data set of the inner cavity position in the engine state. The jitter measuring method can improve the measuring precision and efficiency.

Inventors

FAN MINGZHENG
CHE JUNLONG
YANG MAO

Assignees

中国航发商用航空发动机有限责任公司

Dates

Publication Date: 20260512
Application Date: 20241112

Claims (10)

1. The method for measuring the runout of the inner cavity of the stator casing of the compressor is characterized by comprising the following steps of: acquiring eccentric data of a stator case spigot and a jumping data set of a jumping measurement point of an inner cavity of the stator case; assembling the stator casing to an engine, and performing runout measurement on the stator casing in the assembled engine state to obtain spigot eccentric data in the engine state; And converting the spigot eccentric data in the engine state by combining the spigot eccentric data of the stator case and the jumping data set of the jumping measuring points of the inner cavity of the stator case to obtain the jumping data set of the inner cavity position in the engine state.
2. The method for measuring runout according to claim 1, wherein the step of obtaining the eccentric data of the stator receiver spigot and the set of runout data of the runout point of the inner cavity of the stator receiver comprises the steps of: Obtaining the outer eccentric angle of the front spigot of the stator case and the outer eccentric amount of the front spigot, as the eccentric data of the front spigot of the stator case; obtaining the outer eccentric angle of the rear spigot of the stator case and the outer eccentric amount of the rear spigot, as the eccentric data of the rear spigot of the stator case.
3. The method for measuring runout according to claim 2, wherein the step of obtaining the eccentric data of the spigot of the stator case and the set of runout data of the runout measuring points of the inner cavity of the stator case further comprises: and obtaining an angle phase of the jumping measuring point of the inner cavity of the stator case and a jumping amplitude corresponding to the angle phase, and constructing a jumping data set of the jumping measuring point of the inner cavity of the stator case.
4. The runout measuring method of claim 3, wherein the assembling the stator casing to the engine, performing runout measurement on the stator casing in the assembled engine state, and obtaining the spigot eccentricity data in the engine state, comprises: Assembling the stator case to an engine; Performing runout measurement on the stator casing in the assembled engine state; Acquiring a front spigot outer eccentric angle and a front spigot outer eccentric amount in an engine state, and taking the front spigot outer eccentric angle and the front spigot outer eccentric amount as front spigot eccentric data in the engine state; Acquiring the outer eccentric angle of the rear spigot and the outer eccentric amount of the rear spigot in the engine state, as the back spigot eccentricity data in the engine state.
5. The method for measuring runout according to claim 4, wherein the step of converting the runout eccentric data in the engine state to obtain a runout data set of the inner cavity position in the engine state by combining the runout data set of the stator casing spigot eccentric data and the inner cavity runout measuring point of the stator casing comprises: Constructing a first stator axis according to the front spigot eccentric data of the stator case and the rear spigot eccentric data of the stator case; constructing a second stator axis according to the front spigot eccentric data in the engine state and the rear spigot eccentric data in the engine state; and converting the jumping data set of the jumping points of the inner cavity of the stator case according to the first stator axis and the second stator axis to obtain the jumping data set of the inner cavity position in the engine state.
6. The runout measuring method of claim 5 wherein the first stator axis satisfies: Wherein u, v and w are intermediate parameters, [ uvw ] is the first stator axis, θ 1 is the outer eccentric angle of the front spigot of the stator case, P 1 is the outer eccentric amount of the front spigot of the stator case, θ 2 is the outer eccentric angle of the rear spigot of the stator case, P 2 is the outer eccentric amount of the rear spigot of the stator case, and h is the outer axial distances of the front spigot and the rear spigot of the stator case.
7. The runout measuring method of claim 6 wherein the second stator axis satisfies: Wherein x, y and z are intermediate parameters, [ xyz ] is the second stator axis, θ 3 is the front spigot outer eccentric angle in the engine state, P 3 is the front spigot outer eccentric amount in the engine state, θ 4 is the rear spigot outer eccentric angle in the engine state, P 4 is the rear spigot outer eccentric amount in the engine state, and h is the outer axial distance between the front spigot and the rear spigot of the stator case.
8. The method of claim 7, wherein the set of pulsation data for the position of the internal cavity in the engine state satisfies: Wherein tf i is the jump amplitude of the ith jump data in the jump data set of the inner cavity position under the engine state, alpha i is the angle phase of the ith jump data in the jump data set of the jump measuring point of the inner cavity of the stator case, t i is the jump amplitude of the ith jump data in the jump data set of the jump measuring point of the inner cavity of the stator case, r is the radius of the inner cavity position, and g is the axial distance between the inner cavity position and the outside of the front spigot of the stator case.
9. A storage medium storing non-transitory computer instructions which, when executed, perform the steps of the method of measuring runout of a compressor stator casing inner cavity as claimed in any one of claims 1 to 8.
10. A computer program product comprising a computer program which, when executed by a processor, implements the steps of the method for measuring runout of an inner cavity of a compressor stator casing according to any one of claims 1-8.

Description

Method for measuring runout of honeycomb coating of stator casing of gas compressor, storage medium and computer program product Technical Field The invention relates to engine jump measurement, in particular to a jump measurement method, a storage medium and a computer program product of a honeycomb coating of a stator casing of a gas compressor. Background In the aircraft engine assembly process, the stator casing needs to be assembled on the precision turntable device independently. And (5) performing jitter measurement and concentricity detection on the key positions in the assembly process. The honeycomb structure and the jumping concentricity of the coating position relative to the front fulcrum in the compressor stator are measured, and the measuring head needs to be penetrated into the inner cavity of the stator to be propped against a designated measuring position in the measuring process. However, due to the limitation of the inner cavity position structure of the stator casing and the limitation of the measuring position in the deep cavity, the measuring operation is very complex, and the measuring device needs to be adjusted or customized for a plurality of times to realize the measurement, which results in lower measuring efficiency. Meanwhile, whether the measurement position meets the requirement or not cannot be directly observed in the measurement process, and the measurement accuracy is also affected. Disclosure of Invention The invention aims to provide a runout measuring method, a storage medium and a computer program product for a honeycomb coating of a stator casing of a compressor, which can improve the accuracy and efficiency of runout measurement. The invention provides a method for measuring the runout of an inner cavity of a stator casing of a gas compressor, which comprises the steps of obtaining eccentric data of a spigot of the stator casing and a runout data set of a runout measuring point of the inner cavity of the stator casing, assembling the stator casing to an engine, performing runout measurement on the stator casing in an assembled engine state, obtaining eccentric data of the spigot in the engine state, and converting the eccentric data of the spigot in the engine state by combining the eccentric data of the spigot of the stator casing and the runout data set of the runout measuring point of the inner cavity of the stator casing to obtain a runout data set of the inner cavity position in the engine state. In an embodiment, the obtaining of the stator case spigot eccentric data and the jumping data set of the stator case inner cavity jumping points comprises obtaining a stator case front spigot outer eccentric angle and a stator case front spigot outer eccentric amount as stator case front spigot eccentric data, and obtaining a stator case rear spigot outer eccentric angle and a stator case rear spigot outer eccentric amount as stator case rear spigot eccentric data. In an embodiment, the step of obtaining the eccentric data of the spigot of the stator case and the step data set of the step measuring point of the inner cavity of the stator case further comprises the step of obtaining an angular phase of the step measuring point of the inner cavity of the stator case and a step amplitude corresponding to the angular phase, and constructing the step data set of the step measuring point of the inner cavity of the stator case. In an embodiment, the step of assembling the stator casing to the engine, and performing runout measurement on the stator casing in the assembled engine state to obtain the spigot eccentric data in the engine state, includes the steps of assembling the stator casing to the engine; the method comprises the steps of carrying out runout measurement on a stator casing in an assembled engine state, obtaining a front spigot outer eccentric angle and a front spigot outer eccentric amount in the engine state to serve as front spigot eccentric data in the engine state, and obtaining a rear spigot outer eccentric angle and a rear spigot outer eccentric amount in the engine state to serve as rear spigot eccentric data in the engine state. In an embodiment, the step of combining the stator case spigot eccentric data and the step data set of the stator case inner cavity step measuring point converts spigot eccentric data in an engine state to obtain a step data set of an inner cavity position in the engine state, and the step data set comprises the steps of constructing a first stator axis according to the stator case front spigot eccentric data and the stator case rear spigot eccentric data, constructing a second stator axis according to the engine state front spigot eccentric data and the engine state rear spigot eccentric data, and converting the step data set of the stator case inner cavity step measuring point according to the first stator axis and the second stator axis to obtain a step data set of the inner cavity position in the engine state. In an embodim