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Splicing type mobile plugboard total pressure distortion generator and test method

A distortion generator and splicing technology, which is applied in the field of aero-engines, can solve the problems of high turbulence and pressure pulsation, and achieve the effect of reducing turbulence, avoiding damage, and retaining continuous adjustability.

Active Publication Date: 2022-06-28
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the airflow flows through the position of the movable plate distortion generator, it will enter the gap and the cavity formed by the sealed box, resulting in pressure pulsation and high turbulent airflow, which makes the turbulent flow of the inlet section of the test piece too high

Method used

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  • Splicing type mobile plugboard total pressure distortion generator and test method
  • Splicing type mobile plugboard total pressure distortion generator and test method
  • Splicing type mobile plugboard total pressure distortion generator and test method

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Embodiment Construction

[0038] Below in conjunction with accompanying drawing, the technical scheme of the present invention is described in further detail:

[0039] The present invention may be embodied in many different forms and should not be considered limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, components are exaggerated for clarity.

[0040] It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, components and / or sections, these elements, components and / or sections are not limited by these terms. These terms are only used to distinguish an element, component and / or section from one another. Thus, a first element, component and / or section discussed below could become a second element, component or section without departing from the teaching...

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Abstract

The invention discloses a spliced mobile plugboard total pressure distortion generator and a test method. The distortion generator comprises a first distortion section, an adjusting module and a second distortion section, the adjusting module comprises a partition plate, an adjusting insertion plate and a transmission rod; the adjusting insertion plate comprises 2N insertion strips, 2N springs and a linkage rod. The device is simple in structure, convenient to operate and high in universality. Through combined deformation of the insertion strips, the advantage that the distortion intensity of a movable insertion plate distortion generator is continuously adjustable is reserved, meanwhile, unnecessary pressure pulsation caused by an existing containing cavity before airflow flows into the adjusting insertion plate and the partition plate is reduced, and the turbulence degree of section airflow is reduced. The device can be applied to an engine surge test, and the depth of the insertion plate inserted into the flow channel can be adjusted in time when an engine surges, so that the engine quits surge, and the engine is prevented from being damaged.

Description

technical field [0001] The invention relates to the technical field of aero-engines, and in particular, to a spliced ​​mobile insert plate total pressure distortion generator and a test method. Background technique [0002] Aeroplanes inevitably encounter some problems about aerodynamic stability during flight. A large number of studies have shown that intake distortion is one of the key factors that induce flow instability inside the compressor, and it occurs most frequently. [0003] Drawing on the experience of Russian aero-engine development, my country generally adopts the technical route of the total pressure distortion generator imported from the plug-in plate and the comprehensive distortion index to evaluate the aerodynamic stability of the aero-engine. [0004] The movable insert plate inlet total pressure distortion generator is composed of a rectangular insert plate, a rectangular sealing box with a round hole, a hydraulic cylinder, a displacement sensor and an a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/00G01M15/02
CPCG01M15/00G01M15/02
Inventor 黄润龙李传鹏袁晓晨徐一帆
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS