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Valve shell assembly and valve

A housing assembly and housing technology, which is applied to the valve housing structure, the parts in contact between the valve element and the valve seat, the valve device, etc. body, the effect of increasing the reliability of the weld

Inactive Publication Date: 2017-02-22
ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a valve housing assembly and a valve to solve the problem that the welding seam of the housing assembly is prone to fatigue damage in the prior art

Method used

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  • Valve shell assembly and valve
  • Valve shell assembly and valve
  • Valve shell assembly and valve

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Embodiment Construction

[0034] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0035] In the prior art, there is a special shell structure, which can alleviate the phenomenon that the welds are prone to fatigue damage to a certain extent. Specifically, such as figure 1 with figure 2 As shown, the wall thickness of the welding part 2a on the rotor shell 2 that is butt welded with the valve seat 1 is ts', and the wall thickness of the coil mounting part of the rotor shell 2 is ts, wherein ts' is greater than ts. The rotor case 2 is a press-formed product obtained by press-working a material having a thickness equivalent to that of the welded portion 2a. The increase of the wall thickness of the welded part 2a can ensure the base material melting range width and penetrat...

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PUM

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Abstract

The invention provides a valve shell assembly and a valve. The valve shell assembly comprises a valve seat (10) and a shell (20) fixedly arranged on the valve seat (10). The valve seat (10) is provided with a first matching end face facing the shell (20). The shell (20) is provided with a second matching end face matched with the first matching end face of the valve seat (10). The shell assembly further comprises a sleeve (30) and a strengthening part (40), at least part of the sleeve (30) is arranged on the shell (20) in a sleeving manner, and the strengthening part (40) is arranged on the outer side wall of the sleeve (30) and comprises a first strengthening part body (41) located above the first matching end face. According to the technical scheme, the problem that in the prior art, fatigue damage is likely to happen to the welding line position of a shell assembly can be effectively solved.

Description

technical field [0001] The present invention relates to the technical field of housing components, in particular to a valve housing component and a valve. Background technique [0002] At present, the housing of the electronic expansion valve is composed of a valve seat 1 and a rotor shell 2, which are connected by welding. The rotor shell 2 has a welding part 2a that is butt-welded with the valve seat 1. welds between them. In order to ensure the normal operation of the rotor of the electronic expansion valve, the rotor shell 2 is generally made of thin-walled parts (with a wall thickness of 0.2-0.8mm). In general application occasions, the welding strength between the rotor shell 2 and the valve seat 1 of the above-mentioned thin-walled structure can be guaranteed. However, in CO 2 In a supercritical high-pressure system, the thin-walled rotor shell 2 is easily deformed by high-pressure impact, which leads to fatigue failure of the weld between the rotor shell 2 and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K27/02
CPCF16K27/0254F25B41/31F16K25/00F16K27/00Y02B30/70F25B41/34
Inventor 不公告发明人
Owner ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD