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Net type distortion device for large-bypass-ratio engines

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

Active Publication Date: 2013-08-07
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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  • Net type distortion device for large-bypass-ratio engines
  • Net type distortion device for large-bypass-ratio engines
  • Net type distortion device for large-bypass-ratio engines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0022] Wherein: the front end face of the variable diameter section 1 is connected with the intake port of the engine stand, and the rear end face is connected with the distortion assembly 2 by bolts; the distortion assembly 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 measuring pipe 3 through a socket for installing test equipment. A test sensor installation and removal interface is provided at the position of the test pipeline 4 . The socket connection method ensures the flexible connection between ...

Embodiment 2

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

[0031] Wherein: the front end face of the variable diameter section 1 is connected with the intake port of the engine stand, and the rear end face is connected with the distortion assembly 2 by bolts; the distortion assembly 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 measuring pipe 3 through a socket for installing test equipment. A test sensor installation and removal interface is provided at the position of the test pipeline 4 . The socket connection method ensures the flexible connection between ...

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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 the field of distortion test device design for engines with a bypass ratio of more than 5, and in particular to a mesh-type distortion device for engines with a large bypass ratio. Background technique [0002] At present, the plate-type distortion device is widely used in engines with small bypass ratios. In order to ensure that the measuring section of the plate distance meets the requirement of 3 times the diameter of the engine, this type of test device needs to have a length of more than 5 times the diameter of the engine inlet. For engines with large bypass ratios, it is difficult to implement the plate-type distortion device. 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 be about 8 meters, the lifting of the stand is difficult, and the transformation period is long. At the same time, because the large duct is ...

Claims

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Application Information

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