Two-way ventilation device for universal airplane wing fuel tank ventilation system

A ventilation device, wing oil tank technology, applied in the direction of the fuel tank of the power unit, etc., can solve the problems of increasing the weight of the system and not completely solving the problem of oil leakage, and achieve the effect of easy installation, solving a large number of oil leakage problems, and simple structure

Active Publication Date: 2016-06-01
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the ventilation system of domestic general-purpose aircraft is connected with the outside world mainly through the ventilation pipeline and the atmospheric environment. Due to the large diameter of the ventilation pipeline, oil leakage will occur during the maneuvering flight of the aircraft.

Method used

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  • Two-way ventilation device for universal airplane wing fuel tank ventilation system
  • Two-way ventilation device for universal airplane wing fuel tank ventilation system

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[0015] The specific embodiments of the present invention will be described with reference to the accompanying drawings. like figure 1 , figure 2 , the device housing 1 of the device of the present invention is connected with the ventilation pipe 4 through threads, and the device housing 1 is provided with a ventilation hole 5 . The torsion spring 8 is sheathed on the shutter rod of the shutter assembly 2, and the shutter assembly 2 is fixed on the partition plate 6 through the shutter rod. In a natural state, the shutter assembly 2 is sealed against the device housing 1 under the force of the torsion spring 3 .

[0016] The diameter of the ventilation hole 5 on the device casing 1 of the device of the present invention is 1-3 mm. During the flight of the aircraft, when the pressure in the fuel tank is greater than or equal to the atmospheric pressure, the valve assembly 2 seals the through hole of the partition 6 under the force of the torsion spring 8, and exhausts the ai...

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Abstract

The invention belongs to the technical field of universal airplane wing fuel tank ventilation and relates to a two-way ventilation device for a universal airplane wing fuel tank ventilation system. The two-way ventilation device is of a pure mechanical structure and is mainly composed of a shell, a valve assembly, a spring and the like. The airplane climbing exhausting function and the function that a valve is opened to supplement air when negative pressure exists in a fuel tank in the descending process can be achieved. When an airplane rolls and flies at a large angle, the valve assembly is closed, and therefore the problem that a large amount of fuel of the fuel tank leaks through a ventilation pipe is solved.

Description

technical field [0001] The invention belongs to the technical field of ventilation of wing fuel tanks of general aircrafts, and relates to a two-way ventilation device used for ventilation of wing fuel tanks of general aircrafts. Background technique [0002] At present, the ventilation system of domestic general-purpose aircraft is connected with the outside world mainly through the ventilation pipeline and the atmospheric environment. Due to the large diameter of the ventilation pipeline, oil leakage will occur during the maneuvering flight of the aircraft. In order to solve the oil leakage problem , The traditional ventilation system often needs to arrange a long ventilation pipeline, and the outlet of the ventilation pipe is arranged at the position of the fuselage, which increases the weight of the system and cannot completely solve the problem of oil leakage. Contents of the invention [0003] The purpose of the present invention is to provide a simple in structure, ...

Claims

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Application Information

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IPC IPC(8): B64D37/06
Inventor 罗海涛熊桂碧
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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