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System and method for calibrating opening degree of electric control valve

A calibration system and calibration method technology, which is applied in the field of electric control valve opening calibration system, can solve the problems such as the valve opening cannot be determined, and achieve the effects of improving efficiency, accurate opening-displacement curve, and accurate calibration results

Pending Publication Date: 2022-03-18
浙江中骐科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the relationship between the size of the valve opening and the flow rate cannot be determined at present. It can only be judged by experience, and there is no reliable way to determine the relationship between the two.

Method used

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  • System and method for calibrating opening degree of electric control valve
  • System and method for calibrating opening degree of electric control valve
  • System and method for calibrating opening degree of electric control valve

Examples

Experimental program
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Effect test

Embodiment 1

[0039] like Figure 1-3 As shown, an electronically controlled valve opening degree calibration system includes: a control system 10, a compressed air source 1, a flow meter 2, a flow velocity detector 3, a pressure sensor 6, a flow tube 9, an electromagnetic detection device 8 and a conducting rod 7; The flow tube 9 is connected to the two ports of the electronically controlled valve 4 and is connected to the compressed gas source 1 and the flowmeter 2 to form a closed loop, and a flow rate detector 3 and a pressure sensor 6 are respectively provided at the two ports of the electronically controlled valve 4 , to detect the flow rate and pressure of the two ports of the electronically controlled valve 4, the conducting rod 7 is detachably connected to the outer end face of the valve core 4-1 and conducts the movement of the valve core 4-1 to the inside of the electromagnetic detection device 8 to cause the magnetic field to change, and the electromagnetic field changes. The in...

Embodiment 2

[0045] like Figure 4 As shown, a method for calibrating the opening degree of an electronically controlled valve includes the following steps:

[0046] S1. Both ends of the electric control valve 4 are connected to the flow tube 9, and the initial voltage and initial opening position of the valve core 4-1 are set;

[0047] S2. Gradiently increasing the driving voltage, the voltage drives the valve core 4-1 of the electronically controlled valve 4 to move, and the movement of the valve core 4-1 is conducted to the electromagnetic detection device 8 through the conducting rod 7 and outputs a current signal to the control system 10;

[0048] S3. The control system 10 converts the current signal into a movement signal, and obtains a movement amount-driving voltage relationship graph;

[0049] S4. Randomly select the voltage in the displacement-voltage relationship curve, drive the electric control valve 4, keep the position of the valve core 4-1 unchanged, and the infrared dista...

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PUM

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Abstract

The invention discloses an electric control valve opening calibration system and method, and the system is characterized in that the system comprises a control system, a compressed air source, a flowmeter, a flow velocity detector, a pressure sensor, a flow tube, an electromagnetic detection device, and a conduction rod; the flow pipe is connected to two ports of the electric control valve and connected with the compressed air source and the flow meter to form a closed loop, and the two ports of the electric control valve are each provided with a flow velocity detector and a pressure sensor so as to detect the flow velocity and the pressure of the two ports of the electric control valve. The transmission rod is detachably connected to the outer end face of the valve element and transmits the movement of the valve element to the electromagnetic detection device, and the electromagnetic detection device is internally provided with a magnetic field which changes and outputs an electric signal to the control system to represent the movement amount of the valve element. According to the system, high-efficiency electric control valve calibration can be achieved, the motion state of the valve element in the calibration process can be reflected, the position and opening relation is established in the detection process, and the calibration precision and efficiency are improved.

Description

technical field [0001] The invention belongs to the field of calibration and detection, in particular to a system and method for calibrating the opening degree of an electric control valve. Background technique [0002] Electric control valve is a commonly used type of control valve, which consists of two parts: electric actuator and control valve body. The manual operation is replaced by the electric operation, the adjustment precision is higher, the manpower is saved, and the remote control can be realized. Electric control valves mainly rely on electric actuators to drive the opening and closing of control valves. The electric actuator can receive the current or voltage analog signal from the control system, and achieve the purpose of adjusting the medium flow and pressure parameters of the pipeline by controlling the different openings of the regulating valve, thereby realizing remote automatic control. [0003] In the prior art, the writing of the position voltage sig...

Claims

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Application Information

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IPC IPC(8): G01M13/00G06N20/00
CPCG01M13/00G06N20/00
Inventor 武通郭玉芝张仕成侯云鹏
Owner 浙江中骐科技有限公司