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Overflow safety valve of aviation hydraulic system

A technology of hydraulic system and safety valve, which is applied in the field of improvement of overflow safety valve of aviation hydraulic system, can solve problems such as shortening the service life of safety valve, blockage of orifice, failure of normal reset of safety valve, etc., so as to reduce the number of product maintenance or replacement. , the effect of prolonging the service life

Active Publication Date: 2013-10-16
XINXIANG AVIATION IND GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The disadvantage of the existing structure is: the damping hole of the damping plate is easily blocked by pollutants in the oil, causing the safety valve to fail to reset normally after pressure relief, and must be repaired and replaced, which shortens the service life of the safety valve

Method used

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  • Overflow safety valve of aviation hydraulic system
  • Overflow safety valve of aviation hydraulic system
  • Overflow safety valve of aviation hydraulic system

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Embodiment Construction

[0017] The present invention will be described in further detail below. see Figure 1 to Figure 4, an aviation hydraulic system overflow safety valve, is composed of a housing 4, a main valve mechanism installed in the left part of the inner cavity of the housing 4, and a pilot valve installed in the right part of the inner cavity of the housing 4; the housing 4 is a round There is an external thread on the right part of the outer cylindrical surface of the housing 4. The inner hole of the housing 4 is a two-stage stepped hole 4a. The left section hole with the smallest inner diameter of the two-stage stepped hole 4a is the oil inlet. The right port forms the valve seat of the main valve mechanism, and the right section hole of the two-stage step hole 4a is a threaded hole with an inner diameter larger than the middle section hole. The main valve mechanism oil outlet 4b through which the middle hole of the two-stage stepped hole 4a is connected. A pilot valve oil outlet 4c t...

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Abstract

The invention belongs to an aviation hydraulic technology, and relates to the improvement on an overflow safety valve of an aviation hydraulic system. The overflow safety valve comprises a casing (4), a main valve mechanism mounted at the left part of an inner cavity of the casing (4) as well as a pilot valve mounted at the right part of the inner cavity of the casing (4). The overflow safety valve is characterized by comprising a filter pad (9) which is located in a middle hole (1e) of three-section stepped holes of a main valve (1) and on the left of a damping plate (2). According to the invention, the overflow safety valve of the aviation hydraulic system, which can prevent a damping hole from being blocked, is provided, so that the safety valve can reset normally after pressure relief, product maintenance or replacement times are reduced, and the service life of the safety valve is prolonged.

Description

technical field [0001] The invention belongs to the aviation hydraulic technology and relates to the improvement of the overflow safety valve of the aviation hydraulic system. Background technique [0002] The structure of a current overflow safety valve for aviation hydraulic systems can be found in figure 1 The structure after filter pad 9 has been deleted. It consists of a housing 4, a main valve mechanism installed in the left part of the inner chamber of the housing 4 and a pilot valve installed in the right part of the inner chamber of the housing 4. [0003] The housing 4 is a cylinder, and the right part of the outer cylindrical surface of the housing 4 has an external thread. The inner hole of the housing 4 is a two-stage stepped hole 4a. The left section hole with the smallest inner diameter of the two-stage stepped hole 4a is the oil inlet, and the right port of the left section hole forms the valve seat of the main valve mechanism. The two-stage stepped hole 4a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/10
Inventor 郝伟成刘晓红任德平史新芳赵文海杨春宇
Owner XINXIANG AVIATION IND GROUP
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