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Self-operated sleeve regulating valve

A sleeve regulating valve, self-operated technology, applied in the direction of sliding valves, valve details, valve devices, etc., can solve the problems of low pressure difference and inability to adapt to the bellows, and achieve the effect of adjustable control pressure, high pressure, and simple and compact structure

Inactive Publication Date: 2012-07-11
ZHEJIANG KEHAI INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The self-operated pressure regulating valve that is widely used now usually uses the bellows spool assembly and the actuator to work together to realize the pressure balance before and after the valve. Because the pressure difference that the bellows can withstand is relatively low, there are often problems that cannot adapt to larger pressures. Limitations of high pressure and large diameter valves

Method used

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  • Self-operated sleeve regulating valve

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Embodiment Construction

[0015] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0016] Such as figure 1 The self-operated sleeve regulating valve embodiment shown is composed of a main valve and an actuator. The main valve includes a valve body 1, a sleeve 2, a valve core 3, a valve cover 4, a valve stem 5, a column 6, an adjustment spring 7, Sealing packing 8, packing gland 9, thrust ball bearing 10, upper platen 11, actuator 12, spring seat 13, packing washer 14, adjusting disc 15, adjusting pad 16 and connectors. The actuator is a piston actuator, which is assembled by a cylinder body 121 , a piston 122 , an O-ring 123 and a push rod 124 .

[0017] A valve cavity is arranged in the valve body 1, and a sleeve 2 and a valve core 3 matched with the sleeve 2 are installed in the valve cavity. The valve core 3 is fixedly connected to the lower end of the valve stem 5 and can move up and down in the sleeve 2. When the valve core 3 an...

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Abstract

The invention discloses a self-operated sleeve regulating valve, which comprises a valve body, a sleeve, a valve spool, a valve cover, a valve rod, a vertical column, a regulating spring, sealing packing, a packing gland, a thrust ball bearing, an upper pressing plate, an actuator, a spring seat, a packing gasket, a regulating disk, a regulating pad and a connector. A valve cavity is arranged in the valve body, the sleeve and the valve spool matched with the sleeve are mounted in the valve cavity, the valve spool is fixed to the lower end of the valve rod and is capable of vertically moving in the sleeve, the valve cavity is divided into an upper cavity and a lower cavity when the valve spool and the sleeve are sealed, the upper end of the valve rod penetrates through the upper pressing plate and is connected with a push rod of the actuator, and the pressure of the upper valve cavity and the lower valve cavity is balanced under the combined action of the sleeve, the valve spool and the actuator. The self-operated sleeve regulating valve has the advantages of simple and compact structure, high adjustable and controllable pressure, capability of setting online non-interference regulation and the like, and is applicable to automatic regulation and control for the pressure of process pipelines with gas, liquid, steam and the like with pressure needing to be regulated to be higher than or equal to 0.5Mpa.

Description

technical field [0001] The invention relates to a self-operated pressure regulating valve, in particular to a self-operated sleeve regulating valve which adopts a sleeve valve core to realize pressure balance before and after the valve. Background technique [0002] Self-operated pressure regulating valve is an energy-saving regulating valve product that does not require external energy and only uses the pressure change of the regulated medium itself to automatically adjust. It is an independent control unit integrating detection, execution and control functions. It is suitable for gas and liquid. Automatic adjustment and control of process pipeline pressure such as steam and steam. [0003] The self-operated pressure regulating valve that is widely used now usually uses the bellows spool assembly and the actuator to work together to realize the pressure balance before and after the valve. Because the pressure difference that the bellows can withstand is relatively low, ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K3/00F16K3/30F16K31/12
Inventor 姜纪财陆国军
Owner ZHEJIANG KEHAI INSTR
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