Electronic control pilot-operated type high-precision large-flow regulating valve

Abstract

The invention discloses an electronic control pilot-operated type high-precision large-flow regulating valve. The electronic control pilot-operated type high-precision large-flow regulating valve comprises a first connection pipe which is connected with a high-voltage large-flow valve. The high-voltage large-flow valve comprises a shell, wherein the first connection pipe is connected with one side of the shell, a valve seat is arranged on the lower portion inside the shell, and a valve rod is installed in the valve seat. An electronic pressure controller can select and regulate a fixed point signal source, wherein the current of an external analog signal ranges from 4 mA to 20 mA or the voltage of the external analog signal ranges from 1 VDC to 5 VDC, and feedback and error signals are limited in a programmable mode. The electronic control pilot-operated type high-precision large-flow regulating valve provides closed-loop feedback control for a system, has the supernormal accuracy and response time, and can be connected with a computer to conduct internet control.

Description

technical field [0001] The invention relates to an electric control pilot type high-precision large-flow regulating valve. Background technique [0002] At present, from the perspective of the development of the entire machinery industry in my country, the valve industry is developing rapidly. However, looking at the entire domestic valve industry, most of the valves are low-end products with low technical content. The high-end valves in the domestic market are all based on Imports are the mainstay, which has led to the phenomenon that my country's high-end valve market is monopolized by foreign valve companies. Therefore, my country's valve industry urgently needs to develop in the direction of intelligence and integration. At present, there are about 30 domestic manufacturers who claim to be able to produce high-pressure valves, but their products are basically hydraulic valves, and the pressure valves are generally below 15MPa; The accuracy cannot meet the requirements o...

AI Technical Summary

Problems solved by technology

At present, there are about 30 domestic manufacturers who claim to be able to produce high-pressure valves, but their products are basically hydraulic valves, and the pressure valves are generally below 15MPa; The accuracy cannot meet the requirements of the current high-pressure, high-precision, and large-flow upgrade systems

For high pressure 45MPa, the gas pressure reducer that satisfies the flow value Cv=3.3~12 is basically purchased from abroad with high pressure and large flow valves, and the price is very expensive, and the maintenance cost is relatively high.

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