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A Mesh Distortion Device for High Bypass Ratio Engine

A technology with a large bypass ratio and engine, which is applied in the direction of engine testing, measuring devices, and testing of machine/structural components. It can solve the problems of difficult hoisting of the bench, prominent safety problems, and large engine diameter, etc., and achieve a small length. , Guaranteed safety, adjustable distortion index effect

Active Publication Date: 2015-09-30
AECC SHENYANG ENGINE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the diameter of the large bypass ratio engine inlet is usually more than 1.5m, the axial dimension of the required air intake distortion equipment will reach about 8 meters, the lifting of the stand is difficult, and the transformation period is long
At the same time, since the large duct is larger than the diameter of the engine, the safety problem of using the mesh distortion device is also extremely prominent

Method used

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  • A Mesh Distortion Device for High Bypass Ratio Engine
  • A Mesh Distortion Device for High Bypass Ratio Engine
  • A Mesh Distortion Device for High Bypass Ratio Engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] This embodiment provides a mesh distortion device for engines with large bypass ratio, which is characterized in that: the mesh distortion device for engines with large bypass ratio includes a reducing section 1, a distortion component 2, a measuring pipe 3, Test pipe 4, paste net 5, base net 6, skeleton 7 and center rectifier cone 8;

[0022] Among them: the front end of the variable diameter section 1 is connected with the intake of the engine stand, the rear end is connected with the distortion component 2 by bolts; the distortion component 2 and the measuring pipe 3 are connected by bolts;

[0023] One end of the test pipe 4 is connected to the engine through a bolt, and the other end is connected to the measurement pipe 3 through a socket, for installing test equipment. There is a test sensor installation and disassembly interface at the test pipe 4 position. The socket-type connection method ensures the flexible connection between the inlet of the bench and the fan ca...

Embodiment 2

[0030] This embodiment provides a mesh distortion device for engines with large bypass ratio, which is characterized in that: the mesh distortion device for engines with large bypass ratio includes a reducing section 1, a distortion component 2, a measuring pipe 3, Test pipe 4, paste net 5, base net 6, skeleton 7 and center rectifier cone 8;

[0031] Among them: the front end of the variable diameter section 1 is connected with the inlet of the engine stand, the rear end is connected with the distortion component 2 by bolts; the distortion component 2 and the measuring pipe 3 are connected by bolts;

[0032] One end of the test pipe 4 is connected to the engine through a bolt, and the other end is connected to the measurement pipe 3 through a socket, for installing test equipment. There is a test sensor installation and disassembly interface at the test pipe 4 position. The socket-type connection method ensures the flexible connection between the inlet of the bench and the fan cas...

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Abstract

A net type distortion device for large-bypass-ratio engines comprises a reducer, a distortion component, a measuring pipeline, a testing pipeline, a pasting net, an underlying net, a framework and a central rectifying cone. The front end face of the reducer is connected with an engine rack air incoming duct, the rear end face of the reducer is connected with the distortion component through bolts, the distortion component is connected with the measuring pipeline through bolts, flexible connection between the rack air incoming duct and a fan box is guaranteed by means of socketing connection, the pasting net is a group of semicircular nets in different specifications and used for generating air incoming distortion, the underlying net is a 360-degree full net and used for supporting the pasting net and serving as a supporting framework of the pasting net to guarantee structural strength of the pasting net, the framework is used for supporting the underlying net and the pasting net and meeting pneumatic design requirements, and the central rectifying cone is used for fixing the pasting net, the underlying net and the framework. The net type distortion device for the large-bypass-ratio engines has the advantages that the net type distortion device is in a sectional detachable structure, so that the requirement of limit of a rack on the length of the device is met; and the net type distortion device is good in safety, small in length and adjustable in distortion index, and guarantees experimental operations to be convenient and simple.

Description

Technical field [0001] The invention relates to a large bypass ratio engine, the bypass ratio is above 5, and the field of distortion test device design, in particular to a mesh type distortion device for a large bypass ratio engine. Background technique [0002] At present, the plug-in plate distortion device is widely used in the small duct than the engine. In order to ensure that the plug-in plate distance measurement section reaches the requirement of 3 times the engine diameter, this type of test device needs to have a length of more than 5 times the engine inlet diameter. For engines with large bypass ratios, it is difficult to implement the plug-in distortion device. Since the diameter of the intake port of the large bypass ratio engine is usually more than 1.5m, the axial size of the required intake distortion equipment will reach about 8 meters, which makes it difficult to hoist the bench and the transformation period is long. At the same time, since the diameter of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/02
Inventor 张清张生霍枫黄琨郝勇
Owner AECC SHENYANG ENGINE RES INST