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Displacement-based electric gate valve opening control system and method

A technology of electric gate and valve opening, which is applied in the direction of valve details, valve devices, engine components, etc., can solve the problems of low opening control accuracy and backward control mode of electric gate valve, and achieve easy implementation and high control accuracy , The effect of simple system structure

Pending Publication Date: 2021-07-27
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a displacement-based electric gate valve opening control system and method in order to solve the problems of backward control methods and low opening control accuracy of existing electric gate valves

Method used

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  • Displacement-based electric gate valve opening control system and method
  • Displacement-based electric gate valve opening control system and method
  • Displacement-based electric gate valve opening control system and method

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Experimental program
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Effect test

Embodiment 1

[0046] In this embodiment, a displacement-based electric gate valve opening control system structure, such as figure 1 shown. It includes a valve opening sensor 1 based on displacement, a signal processing platform 2 and a computer system 7 . The displacement-based valve opening sensor 1 and the signal processing platform 2 are connected by a multi-core cable, and a three-wire 4-20mA current signal is used for communication and power supply. The computer system 7 and the signal processing platform 2 are connected by optical fiber and Ethernet communication. The signal processing platform 2 and the electric gate valve body are connected by a multi-core cable, and a three-phase five-wire power supply mode is used. The system of the invention has a simple structure, can perform remote switch control and opening control on traditional electric gate valves, and is easy to realize.

Embodiment 2

[0048] This embodiment is basically the same as Embodiment 1, and the special features are as follows:

[0049] In this embodiment, the signal processing platform 2 includes a signal access module 3 , a main controller module 4 , a network communication interface module 5 and a motor driver module 6 . The function of the signal access module 3 is to convert the 4-20mA current signal connected by the displacement-based valve opening sensor 1 into a digital quantity through an analog-to-digital conversion circuit so as to be processed by the main controller module 4; The main controller module 4 adopts a single-chip controller as the core, and uses serial communication as an interactive mode; the function of the network communication interface module 5 is to convert the serial port signal output by the main controller module 4 into a network signal, so as to communicate with the computer The system 7 communicates; the motor drive module 6 and the main controller module 4 use the...

Embodiment 3

[0052] In this embodiment, a displacement-based electric gate valve opening control method is implemented by using the above-mentioned displacement-based electric gate valve opening control system, which is used to detect the opening of the electric gate valve, And through the given value to control the opening of the electric gate valve. At the same time, the fault alarm information and operation log of the electric gate valve are recorded, and the characteristic is that the operation steps are as follows:

[0053] Step 1. According to the actual working conditions of the electric gate valve, determine the installation position of a displacement-based electric gate valve opening control system;

[0054] Step 1.1, according to the actual installation position of the electric gate valve, determine the installation position of the valve opening sensor based on the displacement, and ensure that the maximum and minimum displacements of the valve opening sensor based on the displac...

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Abstract

The invention relates to the technical field of automatic control, in particular to a displacement-based electric gate valve opening control system and method. The problems that an existing electric gate valve is backward in control mode and low in opening control precision are solved. The system comprises a displacement-based valve opening sensor, a signal processing platform and a computer system. The signal processing platform comprises a signal access module, a main controller module, a network communication interface module and a motor driver module. The computer system provides a control inlet for a user, and specifically comprises an electric gate valve opening control interface, an electric gate valve fault alarm interface and an electric gate valve work log collection interface. 4-20 mA current signal communication is adopted between the signal processing platform and the displacement-based valve opening sensor, and Ethernet communication is adopted between the signal processing platform and the computer system. According to the system, the control mode of the electric gate valve is optimized, and accurate control over the opening degree is achieved.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a displacement-based electric gate valve opening control system and method. Background technique [0002] As a general-purpose component industrial product, valves have been widely used in many industries, such as coal, petroleum, chemical, natural gas, power plants, metallurgy and other industries. In the field of valve application, the coal and machinery industries use a large amount of valves, and all kinds of valves are basically used. In all industries, the basic control of the valve is the size of the flow rate. How to accurately grasp the size of the flow rate has a huge impact on production. At present, electric valves are gradually replacing traditional screw thread valves, and replacing manual work with machinery. This conversion has greatly improved production efficiency. But in the actual scene, the electric valve can only increase the speed of the valve a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/04F16K37/00
CPCF16K31/04F16K37/0041F16K37/0025
Inventor 彭晨朱帅杨陈毛宁
Owner SHANGHAI UNIV
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