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A series vacuum pressure bellows assembly

A technology of vacuum pressure and membrane box components, which is applied to aircraft parts, air handling equipment, transportation and packaging, etc., to achieve the effect of centralized function, simple function and guaranteed stability

Active Publication Date: 2019-03-08
TAIYUAN AERO INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing bellows components do not meet the above requirements

Method used

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  • A series vacuum pressure bellows assembly
  • A series vacuum pressure bellows assembly
  • A series vacuum pressure bellows assembly

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing, please refer to Figure 1 to Figure 3 .

[0016] Such as Figures 1 to 3 As shown, a series vacuum pressure bellows assembly, including vacuum welding bellows string 2 and pressure welding bellows string 1, vacuum welding bellows string 2 and pressure welding bellows string 1 are connected together by electron beam welding A series structure is formed, and corresponding functions are realized relatively independently during operation. Vacuum welded bellows string 2 feels the environmental pressure, and pressure welded bellows string 1 feels the pressure difference inside and outside pressure welded bellows string 1.

[0017] The vacuum welding bellows string 2 includes a vacuum end cover 3, a vacuum welding bellows 4, a central rod 5, and a capillary 6. The vacuum end cover 3 and the capillary 6 are connected by silver brazing, and the vacuum welding bellows 4 are connected ...

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Abstract

The invention belongs to the field of aviation airborne equipment and particularly relates to a series type vacuum pressure film box assembly. The series type vacuum pressure film box assembly adopts a structure that a vacuum welding film box bunch and a pressure welding film box bunch are connected in series, integrates the functions of vacuum film boxes and functions of pressure film boxes and meanwhile guarantees relative independentability of the vacuum welding film box bunch and the pressure welding film box bunch, function achievement is relatively easy, and assembling is relatively convenient.

Description

technical field [0001] The invention belongs to the field of aviation airborne equipment, and in particular relates to a serial vacuum pressure bellows assembly. Background technique [0002] At present, the bellows assembly required for the deflation valve of the oxygen supply module of the aircraft electronic oxygen supply anti-stress regulator, on the one hand, requires that when the cabin height is lower than a certain height, the bellows assembly is stopped by an internal hard core to keep the height of the bellows assembly at a constant level. On the other hand, when the height reaches a certain height, the displacement of the bellows assembly starts. In addition, it is also required that at another certain height, the bellows assembly produces a certain displacement to close the deflation valve; when the input pressure reaches a certain pressure, the bellows assembly also produces a certain displacement to close the deflation valve. In order to meet the above require...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64D13/06
CPCB64D13/06B64D2013/0681
Inventor 张志斌陈小军杨建平姬仕琪
Owner TAIYUAN AERO INSTR
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