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Intelligent regulating valve

A technology of electric regulating valve and control method, applied in the direction of valve details, valve device, valve operation/release device, etc., to achieve the effect of high control accuracy and versatility

Inactive Publication Date: 2008-06-11
常州市绿空能源设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional electric control valve is composed of two parts, the servo amplifier and the actuator. The servo amplifier compares the input signal with the feedback signal from the actuator position transmitter, and amplifies the deviation between the two to drive the motor to rotate. Deceleration, drives the valve core to rotate to change the valve opening, it receives and outputs analog signals, so there are problems of accuracy and propagation distance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] Control terminal: The role of single-chip AT89S51 is to collect the key codes scanned by 8279, and convert the collected key codes into a certain command format and send them to the bus to control the regulating valve on the bus to make the regulating valve rotate or send opening information.

[0008] Actuator side: power supply for single chip microcomputer and stepping motor, using DC / DC voltage converter, in order to enhance the anti-interference ability of the system, add filter circuit at both ends of DC / DC input / output, sensor part: use WDD-35 Type angular displacement sensor to detect the opening of the valve.

[0009] Sensor part: WDD-35 angular displacement sensor is used to detect the opening of the valve. Since the valve rotation angle range is 0°-90°, the output resistance range of this sensor is 0W-2.5kW.

[0010] Amplifier part: AD623 amplifies the 0V-1.25V analog signal output by the angular displacement sensor to 0V-5V, and connects a 16kW resistor betw...

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PUM

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Abstract

The invention provides a control method for an electric adjusting valve, which comprises a SCM and a chip. A control end of the adjusting valve is composed of a SCM AT89S51 and a keyboard display chip 8279, etc., wherein, the 8279 collects the information of the keyboard and then sends the information to the SCM for processing; the SCM converses the information of the keyboard into the command for controlling the adjusting valve. The invention assembles the logic control circuit and the calculating storage unit into SOC chip control, directly achieves the digital commands from RS-485 bus and then controls the stepping motor to rotate through the SCM, which has higher precision and further transferring distance reaching to 1200m, stronger loading capacity of bus and capable of carrying external equipments for over 30 sets by comparing with the traditional adjusting valves.

Description

technical field [0001] The invention relates to a control method of a regulating valve, in particular to a control method of an electric regulating valve. Background technique [0002] The traditional electric control valve is composed of two parts, the servo amplifier and the actuator. The servo amplifier compares the input signal with the feedback signal from the actuator position transmitter, and amplifies the deviation between the two to drive the motor to rotate. Deceleration drives the spool to rotate to change the valve opening. It receives and outputs analog signals, so there are problems of accuracy and propagation distance. Contents of the invention [0003] Aiming at the defects of the prior art, the invention provides a control method of an electric regulating valve. [0004] In order to achieve the above object, the present invention takes the following measures to achieve: [0005] A control method for an electric regulating valve, comprising a single chip ...

Claims

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Application Information

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IPC IPC(8): F16K31/04F16K5/00F16K31/72
Inventor 叶海英韩璐韩国庆
Owner 常州市绿空能源设备有限公司
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