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Automatic high-precision adjustment control system for common electric valve

A technology of regulating control and electric valves, applied in the direction of valve details, valve lifts, valve devices, etc., can solve problems such as limited adjustment accuracy, inability to output analog signals, and inability to achieve millisecond-level adjustments, so as to reduce response errors and simple structure Effect

Active Publication Date: 2019-02-22
安徽正刚新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] What the present invention is to overcome is that electric control valves on the market are regulated by 4 to 20MA or 0 to 5V or 0-10V, which cannot achieve high-precision millisecond-level regulation, and the regulation accuracy is limited, and the existing PLC or DCS system cannot output 0.1 % High-precision analog signals cannot achieve high-precision control. The purpose is to provide a common electric valve to achieve automatic high-precision adjustment control system

Method used

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  • Automatic high-precision adjustment control system for common electric valve
  • Automatic high-precision adjustment control system for common electric valve
  • Automatic high-precision adjustment control system for common electric valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 As shown; an ordinary electric valve realizes automatic high-precision adjustment control system, which is applied to a cold and hot continuous supply system, and is characterized in that it includes:

[0025] The electric valve 1, the electric valve 1 is installed in the cooling and heating continuous supply system, and the temperature sensor, pressure sensor and flow sensor are respectively installed in the cooling and heating continuous supply system,

[0026] DCS control cabinet 2, the temperature sensor, pressure sensor and flow sensor are respectively electrically connected to the input terminals of the DCS control cabinet,

[0027] Relay 3, electric valve 1 is connected to the output circuit of relay 3, and the input circuit of relay 3 is connected to the output terminal of DCS control cabinet 2,

[0028] A circuit protection module 4 is electrically connected between the connection between the electric valve 1 and the relay 3, and the output ci...

Embodiment 2

[0038] Such as figure 1 As shown; an ordinary electric valve realizes automatic high-precision adjustment control system, which is applied to a cold and hot continuous supply system, and is characterized in that it includes:

[0039] The electric valve 1, the electric valve 1 is installed in the cooling and heating continuous supply system, and the temperature sensor, pressure sensor and flow sensor are respectively installed in the cooling and heating continuous supply system,

[0040] DCS control cabinet 2, the temperature sensor, pressure sensor and flow sensor are respectively electrically connected to the input terminals of the DCS control cabinet,

[0041] Relay 3, electric valve 1 is connected to the output circuit of relay 3, and the input circuit of relay 3 is connected to the output terminal of DCS control cabinet 2,

[0042] A circuit protection module 4 is electrically connected between the connection between the electric valve 1 and the relay 3, and the output ci...

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Abstract

The invention discloses an automatic high-precision adjustment control system for a common electric valve, and the automatic high-precision adjustment control system is applied to a cold and hot continuous supply system. The control system comprises an electric valve, a DCS control cabinet and a relay, wherein the electric valve is installed inside the cold and hot continuous supply system, and atemperature sensor, a pressure sensor and a flow sensor are installed inside the cold and hot continuous supply system separately; the temperature sensor, the pressure sensor and the flow sensor are electrically connected to the input end of the DCS control cabinet separately; and the electric valve is connected in an output loop of the relay, an input loop of the relay is connected with the output end of the DCS control cabinet, and a voltage reduction module and a frequency conversion module are electrically connected in the output loop of the relay. A 380 V / 50 HZ three-phase voltage input is adopted, 380 V three-phase voltage is converted into 110 V three-phase voltage through the voltage reduction module, and then the frequency is converted to 2 HZ through the frequency conversion module;, and a millisecond-level control unit is electrically connected between the relay and the DCS control cabinet.

Description

technical field [0001] The invention relates to the field of energy equipment, in particular to an automatic high-precision adjustment control system for an ordinary electric valve. Background technique [0002] Combined cooling and heating system, the compressor compresses the refrigerant to circulate among the air cooler, evaporator, and regenerator, and at the same time, it can realize cooling and heating. [0003] Electric valves are installed in traditional combined cooling and heating systems to control the input of CO2 inside the system. In order to realize the automatic control of electric valves, PLC or DCS systems are usually used to control the opening or closing of electric valves. Electric control valves on the market are used for 4 To 20MA or 0 to 5V or 0-10V adjustment, it is impossible to achieve high-precision millisecond-level adjustment, and the adjustment accuracy is limited, and the existing PLC or DCS system cannot output 0.1% high-precision analog sign...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/02F16K1/00
CPCF16K1/00F16K31/02
Inventor 戴正刚杨积栋李媛陈浩王正平宣扬
Owner 安徽正刚新能源科技有限公司
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