CN-122016325-A - Auxiliary power device turbine guide vane flow testing device, system and method

CN122016325ACN 122016325 ACN122016325 ACN 122016325ACN-122016325-A

Abstract

The invention relates to the technical field of auxiliary power device testing, and discloses an auxiliary power device turbine guide vane flow testing device, an auxiliary power device turbine guide vane flow testing system and an auxiliary power device turbine guide vane flow testing method. The turbine guide vane flow testing device of the auxiliary power device comprises a fixed disc, a sliding block and a compressing mechanism, wherein the fixed disc is provided with a through groove penetrating along the axial direction of the fixed disc, the through groove is used for placing a standard part and an accompanying test piece or the accompanying test piece and the test piece, the sliding block is arranged in the through groove and can slide along the extending direction of the through groove, and the compressing mechanism is arranged on the fixed disc and the sliding block and is used for compressing the standard part and the accompanying test piece in the through groove or compressing the accompanying test piece and the test piece in the through groove. The auxiliary power device turbine guide vane flow test system comprises an auxiliary power device turbine guide vane flow test device, an air source unit, a measuring unit and a calculating unit. The auxiliary power device turbine guide vane flow testing method comprises two steps. According to the technical scheme, the technical problems that the efficiency of detecting the turbine guide vane is low and accurate measurement cannot be carried out on a single guide vane channel are solved.

Inventors

WANG LU
LI BO
ZHOU XU
YUAN FANG

Assignees

四川欧航科技有限责任公司

Dates

Publication Date: 20260512
Application Date: 20260408

Claims (10)

1. An auxiliary power unit turbine vane flow testing device, comprising: the fixing disc is provided with a through groove penetrating along the axial direction of the fixing disc, and the through groove is used for placing a standard part and a test accompanying piece or is used for placing the test accompanying piece and a test piece; The sliding block is arranged in the through groove and can slide along the extending direction of the through groove so as to change the length of the through groove; the compressing mechanism is arranged on the fixed disc and the sliding block and is used for compressing the standard part and the accompanying test piece in the through groove or compressing the accompanying test piece and the test piece in the through groove.
2. The auxiliary power unit turbine vane flow testing device according to claim 1, wherein the compression mechanism comprises an elastic component and a driving component, and the driving component is arranged on the fixed disk and the sliding block, is connected with the elastic component, and is used for driving the elastic component to move close to or far away from the through groove.
3. The auxiliary power unit turbine vane flow testing device according to claim 2, wherein the driving assembly comprises two first driving parts and two second driving parts, the two first driving parts are arranged on the fixed disc and are arranged on two sides of the through groove along the radial direction of the fixed disc; the two second driving parts are arranged on two sides of the through groove along the axial direction of the through groove, one of the second driving parts is arranged on the sliding block, and the other second driving part is arranged on the fixed disc; The elastic component is connected with the two first driving parts and the two second driving parts, and the first driving parts and the second driving parts are used for driving the elastic component to move close to or far away from the through groove.
4. The auxiliary power unit turbine vane flow testing device according to claim 3, wherein the elastic assembly comprises four elastic pieces, two of the elastic pieces are arranged on two sides of one of the first driving parts along the circumferential direction of the through slot, and the other two elastic pieces are arranged on two sides of the other first driving part along the circumferential direction of the through slot.
5. The auxiliary power unit turbine vane flow test device of claim 4, wherein the first drive section comprises a first base, a first connecting rod, a first handle and a first compression rod, the first base is arranged on the fixed disk, the first compression rod is rotatably arranged on the first base, and the first handle is rotatably arranged on the first base and is connected with the first compression rod through the first connecting rod; the two elastic sheets are arranged on two sides of the first pressing rod along the circumferential direction of the through groove.
6. The auxiliary power device turbine guide vane flow testing device according to claim 4, wherein the second driving part comprises a second base, a second connecting rod, a second handle, a second compression rod and a compression piece, the second compression rod is rotatably arranged on the second base, the second handle is rotatably arranged on the second base and is connected with the second compression rod through the second connecting rod, and the compression piece is arranged on the second compression rod and is arranged along the radial direction of the through groove and corresponds to two elastic pieces; one of the second bases is arranged on the fixed disc, and the other second base is arranged on the sliding block.
7. The auxiliary power unit turbine vane flow testing device according to claim 4, wherein the fixed disk is provided with a first baffle corresponding to the through groove for supporting a test piece; and/or the sliding block is provided with a second baffle for abutting against the standard component or the test piece; and/or, the elastic sheet has a bending structure; and/or, the fixed disk is provided with one of a guide groove and a bulge corresponding to the through groove, the sliding block is provided with the other one, and the bulge is embedded in the guide groove.
8. An auxiliary power unit turbine vane flow test system comprising an auxiliary power unit turbine vane flow test device as claimed in any one of claims 1 to 7, further comprising: An air source unit for generating an air flow; the measuring unit is used for measuring the flow areas of the standard component and the accompanying test piece and the flow areas of the accompanying test piece and the test piece; And the calculating unit is used for calculating the flow area of the accompanying test piece and the flow area of the test piece.
9. A method for testing the flow rate of turbine guide vanes of an auxiliary power device, which is applied with the system for testing the flow rate of turbine guide vanes of the auxiliary power device according to claim 8, and is characterized by further comprising the following steps: Measuring the total flow area of the standard component and the accompanying test piece, and calculating the flow area of the accompanying test piece according to the flow area of the standard component; and measuring the total flow area of the test piece and the accompanying test piece, and calculating the flow area of the test piece according to the flow area of the accompanying test piece.
10. The method for testing the flow of the turbine guide vanes of the auxiliary power device according to claim 9, wherein the flow area of the accompanying piece is calculated by the following method: A Accompanying and accompany =A Total (S) 1- A Label (C) the flow area of the test piece is calculated by the following steps: A Measuring =A Total (S) 2 -A Accompanying and accompany In the above formula, a Total (S) 1 is the total flow area of the standard component and the accompanying component, a Total (S) 2 is the total flow area of the accompanying component and the test component, a Label (C) is the flow area of the standard component, a Accompanying and accompany is the flow area of the accompanying component, and a Measuring is the flow area of the test component.

Description

Auxiliary power device turbine guide vane flow testing device, system and method Technical Field The invention relates to the technical field of auxiliary power device testing, in particular to an auxiliary power device turbine guide vane flow testing device, an auxiliary power device turbine guide vane flow testing system and an auxiliary power device turbine guide vane flow testing method. Background The Auxiliary Power Unit (APU) is a small-sized gas turbine engine, is an important component of an aircraft, is a small-sized power unit arranged in a tail cone of the last section of an aircraft fuselage, provides electric power and air sources for an electric system and a ring control system in a passenger cabin when the aircraft is in flight, provides standby electric power in the flight process, and helps the aircraft to start the engine. Turbine guide blades (vanes) are critical stator components in the APU whose effective flow area is a critical aerodynamic parameter that affects turbine efficiency, APU output power, and surge margin. During APU repair or manufacturing, the effective flow area of the turbine guide vane may deviate from design due to thermal loading, mechanical stresses, and machining errors, and accurate inspection is necessary. Currently, the effective flow area detection efficiency of APU turbine guides in the prior art is low, and accurate measurement of a single guide vane channel cannot be performed. Disclosure of Invention The application discloses a device, a system and a method for testing the flow of a turbine guide vane of an auxiliary power device, which are used for solving the technical problems that the efficiency of detecting the turbine guide vane is low and the accurate measurement of a single guide vane channel cannot be carried out in the related art. In order to solve the problems, the invention adopts the following technical scheme: in a first aspect, the application discloses an auxiliary power unit turbine vane flow testing device comprising: The fixed disc is provided with a through groove penetrating along the axial direction of the fixed disc, and the through groove is used for placing a standard part and a test accompanying piece or is used for placing the test accompanying piece and a test piece; the sliding block is arranged in the through groove and can slide along the extending direction of the through groove so as to change the length of the through groove; the compressing mechanism is arranged on the fixed disc and the sliding block and used for compressing the standard part and the accompanying test piece in the through groove or compressing the accompanying test piece and the test piece in the through groove. In some schemes, the compressing mechanism comprises an elastic component and a driving component, wherein the driving component is arranged on the fixed disc and the sliding block and is connected with the elastic component for driving the elastic component to move close to or far away from the through groove. In some schemes, the driving assembly comprises two first driving parts and two second driving parts, wherein the two first driving parts are arranged on the fixed disc and are arranged on two sides of the through groove along the radial direction of the fixed disc; the elastic component is connected with the two first driving parts and the two second driving parts, and the first driving parts and the second driving parts are used for driving the elastic component to move close to or far away from the through groove. In some embodiments, the elastic component includes four elastic pieces, wherein two elastic pieces are disposed on two sides of one of the first driving portions along a circumferential direction of the through slot, and the other two elastic pieces are disposed on two sides of the other first driving portion along the circumferential direction of the through slot. In some schemes, the first driving part comprises a first base, a first connecting rod, a first handle and a first pressing rod, wherein the first base is arranged on the fixed disc, the first pressing rod is rotationally arranged on the first base, and the first handle is rotationally arranged on the first base and is connected with the first pressing rod through the first connecting rod; The two elastic sheets are arranged on two sides of the first pressing rod along the circumference of the through groove. In some schemes, the second driving part comprises a second base, a second connecting rod, a second handle, a second compression rod and compression sheets, wherein the second compression rod is rotationally arranged on the second base, the second handle is rotationally arranged on the second base and is connected with the second compression rod through the second connecting rod, and the compression sheets are arranged on the second compression rod and are correspondingly arranged along the radial direction of the through groove; one of the second bases is arr