Hydraulic self-operated three-way valve

A self-operated, three-way valve technology, used in multi-way valves, lift valves, valve details, etc., can solve the problems of inability to meet the main circuit, bypass switching, difficulty in key control valves, and difficulty in control, etc. High performance requirements, compact structure, and the effect of ensuring flow requirements

Active Publication Date: 2013-03-27
DALIAN DAGAO VALVE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is relatively difficult to control high temperature, high pound class, high power, and large caliber such as thermal power plants. It is difficult to design key control valves in the high-speed main circuit and bypass switching control piping system of thermal power units, and requires external high-power or Large-scale driving mechanism is operated, and at the same time, it cannot meet the requirement of switching between main road and bypass ≤5s

Method used

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  • Hydraulic self-operated three-way valve
  • Hydraulic self-operated three-way valve

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Embodiment Construction

[0030] In order to further understand the hydraulic self-operated three-way valve, the description is as follows in conjunction with the accompanying drawings.

[0031]It includes a handle 29, a valve stem 4, an upper valve stem 30, a valve body 1 and a valve flap 3, and is characterized in that it also includes a piston upper cavity 33, a piston lower cavity 34, an upper piston cavity inlet passage 36 and an outlet of the piston lower cavity Passage 37, handle 29 is connected with upper valve stem 30, and upper valve stem 30 is fixed in the middle of bracket 21, and upper valve stem 30 both sides are provided with pipe sleeve 31, and bracket 21 is provided with limit pin 28, and limit pin 28 and lock chain 26 are connected, the chain 26 is fixed on the bracket 21 by bolts, the bracket 21 at the lower end of the chain 26 is provided with a limit switch 25, the valve stem 4 is connected with the pipe sleeve 31, and the upper valve stem 30 and the valve stem 4 are located between...

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Abstract

The invention relates to a three-way valve, in particular to a hydraulic self-operated three-way valve which belongs to the field of valves; the design of an overall structure of a hydraulic high-pressure inlet and outlet three-way valve is adopted; the action force of the pressure of a main pipeline medium serves as the driving force of the action of the valve through the structural design of a built-in piston cylinder; the action requirements of the valve can be met without adding other auxiliary driving devices, a problem that an external high-power driving device is needed is solved, and the overall valve is simplified. The valve body of the valve is in the design of an overall forged structure, so that the phenomenon that a forge welding structure has welding stress defects is avoided, and a 15NiCuMoNb5-6-4(WB36) material is adopted, so that the overall weight of the valve can be reduced by more than one third.

Description

technical field [0001] The technical invention relates to a three-way valve, in particular to a hydraulic self-operated three-way valve, which belongs to the field of valves. Background technique [0002] With the continuous development and growth of science and technology, and the continuous growth of the economic strength of various countries, thermal power generation is developing towards higher power and larger scale. In particular, the popularization and application of super (ultra)critical thermal power unit technology has prompted my country's thermal power technology to rise to a higher level. The research and development of key valves for super (super) critical thermal power units has become a key factor restricting the development of thermal power units in my country. It is relatively difficult to control high temperature, high pound class, high power, and large caliber such as thermal power plants. It is difficult to design key control valves in the high-speed ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K11/044F16K27/02F16K37/00F16K1/44F16K1/32F16K31/143
Inventor 姜松志
Owner DALIAN DAGAO VALVE
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