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Sheet-like valve device and front shield ring with same

A valve device, sheet-like technology, applied in the cooling system of the power unit, weight reduction, etc., to achieve the effects of simple structure, reduced aircraft weight, and high reliability

Inactive Publication Date: 2019-05-24
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a flap valve device and a front cover ring with the same, so as to solve at least one problem existing in the air inlet of the engine nacelle

Method used

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  • Sheet-like valve device and front shield ring with same
  • Sheet-like valve device and front shield ring with same
  • Sheet-like valve device and front shield ring with same

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Embodiment Construction

[0022] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated.

[0023] The flap valve device of the present invention includes: an inner ring plate 2 , an outer ring plate 3 , a first sealing member 8 and a second sealing member 9 .

[0024] see figure 1 with figure 2 , specifically, the inner ring plate 2 is arranged on the shape of the inner wall B of the air inlet, and the inner ring plate 2 is provided with a rectangular first air vent 10 , and the filter screen 6 is installed on the first air vent 10 .

[0025] The outer ring plate 3 is arranged on the outer side of the inner ring plate 2, and a rectangular second ventilation opening 11 is opened on the outer ring plate 3 at a position matching the first ventilation opening...

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PUM

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Abstract

The invention provides a sheet-like valve device and a front shield ring with the same, and relates to the field of airplane structure designs. The sheet-like valve device comprises an inner ring plate (2), an outer ring plate (3), a first sealing element (8) and a second sealing element (9). The sheet-like valve device is capable of adequately using a principle of an air pressure difference between an engine compartment and an air inlet channel, the sheet-like valve device can be automatically opened and closed, so a complicated structure is avoided from being designed or a control device isavoided from being arranged. The sheet-like valve device is good in structure machinability, light in structure weight, and good in maintainability and economy, and capable of improving reliability ofthe structure.

Description

technical field [0001] The invention relates to the field of aircraft structure design, in particular to a flap valve device and a front cover ring with the same. Background technique [0002] The temperature generated in the engine compartment of an aircraft requires the introduction of airflow to cool and protect its parts and systems. The engine enclosure and the installation space of the fuselage structure form the circulation channels for the cooling air. In various working states of the turbine starter and the engine, the cooling air flow is caused according to the principle of air pressure difference between the engine compartment, the air inlet and the outside of the fuselage. [0003] There are two cooling air inlets in the engine compartment of a certain type of aircraft, one is the plate valve structure on the front cover of the engine, and the other is the disc valve structure of the fuselage at the bottom of the engine compartment. According to the various wor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64D33/08
CPCY02T50/40
Inventor 马志强龙家文李东
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA