Intelligent constant-current high-precision temperature-control pressure-control regulating valve

Abstract

The invention discloses an intelligent constant-current high-precision temperature-control pressure-control regulating valve, and relates to the technical field of regulating valves. The intelligent constant-current high-precision temperature-control pressure-control regulating valve is provided with a self-sealing valve core and a valve rod, a self-sealing channel is formed in the valve rod, and the self-sealing valve core is composed of a sealing seat, a gas supply seat and a regulating part. Gas enters the self-sealing valve core through the self-sealing channel, a gas source is provided for the sealing seat and the gas supply seat, when external gas supply is instantaneously interrupted, the self-sealing channel can be blocked through the regulating part, gas in the sealing seat and the gas supply seat cannot flow back through the self-sealing channel, the sealing seat and the gas supply seat are always in an expansion state, in other words, the self-sealing valve core can still block a regulating hole, so that fluid is controlled, time is provided for overhauling of overhauling personnel, and accidents are avoided.

Description

technical field [0001] The invention relates to the technical field of regulating valves, in particular to an intelligent constant-flow and high-precision temperature-controlling and pressure-controlling regulating valve. Background technique [0002] A control valve is a final control element that changes process parameters such as medium flow, pressure, and temperature by means of power by receiving control signals. Therefore, a control valve is also called a control valve. Control valves are usually divided into: pneumatic control valves, electric control valves , hydraulic control valves and self-operated control valves, among them, pneumatic control valves are widely used in industrial control, for example: Chinese utility model patent (application number is CN202020791248.5) discloses a "pneumatic film control valve", which achieves It can realize the rapid action of the valve core and improve the effect of valve control accuracy; [0003] However, the existing contro...

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Problems solved by technology

[0004] Existing pneumatic control valves are usually supplied and exhausted by air pumps. When the air pump fails, the entire pneumatic control valve will have no power support, resulting in the entire control valve opening automatically, unable to control the medium, and not giving work. The time for personnel response and maintenance is prone to production accidents;

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