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Intelligent calibration device and method for steady-state fluid force of valve element of proportional valve

A proportional valve and hydraulic power technology, applied in the field of proportional valves, can solve the problems of changing the structure of the valve body, unable to disassemble the structure of the proportional valve, etc., and achieve the effect of effective measurement

Active Publication Date: 2020-06-19
SHANGHAI NUOMA HYDRAULIC SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing force measurement technologies are in direct contact with the measured object, but they are helpless for the experimental measurement of the hydraulic power of the spool. We cannot disassemble the proportional valve structure for measurement, let alone change the valve body structure for measurement.

Method used

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  • Intelligent calibration device and method for steady-state fluid force of valve element of proportional valve
  • Intelligent calibration device and method for steady-state fluid force of valve element of proportional valve

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Embodiment Construction

[0025] Please see the attached picture, in the figure 1 is the hydraulic pump, 2 is the pressure sensor, 3 is the proportional valve, 4 is the throttle valve, 5 is the valve controller, 6 is the circuit board for calibration, 7 is the PC, 8 is the relief valve , 9 is the fuel tank.

[0026] Such as figure 1 As shown, the present invention mainly relies on a single-chip microcomputer system with signal acquisition and communication functions such as figure 1 , calculate and process the collected signals in the single-chip microcomputer to obtain the hydrodynamic calibration results and output them to the computer. The processing flow is as follows figure 2 shown.

[0027] See figure 1 , the intelligent calibration device of the proportional valve spool steady-state hydraulic power of the present invention, the proportional valve includes a proportional valve 3 valve body and a valve controller 5, which includes a hydraulic pump 1 that pumps oil from the oil tank 9 to the pr...

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Abstract

The invention relates to a proportional valve, in particular to an intelligent calibration device and method for a steady-state fluid force of a valve element of a proportional valve. The proportionalvalve with a valve controller is mounted in a mounting table of a pressure adjustable hydraulic system valve; a circuit board for calibration is connected to the valve controller, and a D / A module onthe circuit board sends out a position command to the valve controller, so that the circuit board is controlled in a target position, and the A / D module receives a valve element position fed back bythe valve controller and a current signal of the proportional valve; the circuit board is programmed by using a singlechip microcomputer or other microprocessors, a signal collected by a program is processed to obtain a fluid force of a measuring point and a position command signal of a next measuring point is sent out till the fluid forces of all measuring points are measured, and at the moment,the circuit board for calibration sends measured data to a computer by way of serial communication or bus communication. According to the intelligent calibration device and method, the amplitude of the fluid force can be calibrated automatically without detaching a proportional valve body.

Description

technical field [0001] The invention relates to a proportional valve, in particular to the calibration of the steady-state hydraulic power of a valve core of the proportional valve. Background technique [0002] Hydraulic power: The proportional valve controls the opening of the valve port through the movement of the spool. When the continuously flowing oil passes through the valve port, the direction and speed change, and the oil will form a hydraulic force on the valve core, prompting the valve port to close. The opening of the valve port of the proportional valve is controlled by the position of the spool, and the movement direction of the spool is mainly affected by three forces, which are the push or pull force of the electromagnet, the force of the bias spring and the hydraulic force. When the spool stabilizes at a certain position and keeps the opening of the valve port unchanged, it is in a state of force balance. The push or pull force of the electromagnet can be o...

Claims

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Application Information

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IPC IPC(8): F15B19/00
CPCF15B19/00
Inventor 孙瑞辉苏琦沈俊
Owner SHANGHAI NUOMA HYDRAULIC SYST
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