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Method for achieving hard sealing of elastic valve combination device

A hard sealing and combination technology, applied in valve devices, safety valves, engine components, etc., can solve the problems of mechanical hard sealing, and achieve the effects of high reliability, reduced process control accuracy requirements, and strong stability

Active Publication Date: 2017-05-10
TAIYUAN AERO INSTR
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: Combining the special characteristics of the elastic deformation of the bellows, propose a method suitable for the hard sealing of the elastic assembly parts to realize the hard sealing of the elastic valve assembly device, and solve the hard sealing problem of this type of mechanism

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  • Method for achieving hard sealing of elastic valve combination device

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Embodiment Construction

[0021] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail, please refer to figure 1 .

[0022] like figure 1 As shown, it is the applicable object of this method. The elastic valve assembly device includes a housing cover 1, a valve sealing chamber 2, a bellows cover 3, a valve pressure sensing chamber 4, a bellows 5, a working pressure chamber 6, a valve seat 7, Shell 8, seat sealing surface 9, cover sealing surface 10, pressure charging port 11, sealing ring 12, the two ends of the bellows 5 are respectively resistance welded with the bellows cover 3 and the shell 8; the shell 8 and the shell cover 1 are electronically Beam welding; housing cover 1 and the hole shaft of bellows cover 3 are connected by sliding fit; valve seat 7 and housing 8 are assembled and connected by screws, and the two are sealed in the circumferential direction by sealing ring 12, and the sealing surface 9 of the rear seat is assembled w...

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Abstract

The invention belongs to the technical field of aviation airborne equipment and particularly relates to a method for achieving hard sealing of an elastic valve combination device. The method mainly includes the steps of grinding of a corrugated pipe cover upper cover sealing surface, corrugated pipe correction, assembly welding of a corrugated pipe and a corrugated pipe cover, assembly welding of a corrugated pipe assembly and a shell, assembly welding of a shell assembly and a shell cover, assembly of an elastic valve assembly, a valve seat and a sealing ring, determining of sealing weld pressure P, sealing weld of a charging opening and the like. The technical bottleneck of hard sealing of the elastic valve combination deice is broken through, the pass percent of the sealing performance of a valve can be increased to 95% or above from 50% or below, and the problem of hard sealing of an elastic valve combination device is completely solved. Compared with the prior art, by means of the technical scheme, the requirement of process control precision of a product is reduced, the process feasibility of implementation is high, and the sealing performance, stability and reliability of the assembled valve are high.

Description

technical field [0001] The invention belongs to the technical field of aviation airborne equipment, and in particular relates to a method for realizing hard sealing of an elastic valve assembly device. Background technique [0002] The elastic valve assembly device is a valve assembly assembly with elastic components such as bellows and bellows as the core components, which are assembled and welded with other mechanical parts. The device is installed in the lubricating oil system of the aircraft. At a certain flight altitude, the bellows elastically deforms under the pressure difference between the inner and outer chambers, and fits with other mechanical parts of the mechanism, and realizes a hard seal between the two fitting parts. The existing technology is based on the calculation of elastic theory, by calculating the required load of the bellows under the required deformation displacement, the size of the sealing pressure of the outer cavity of the bellows is determined,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/02
CPCF16K17/02
Inventor 王文霞宋剑峰王灵宝王建功
Owner TAIYUAN AERO INSTR
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