Current-type electro-hydraulic proportional valve current feedback system

An electro-hydraulic proportional valve and current feedback technology, which is applied to valve devices, engine components, mechanical equipment, etc., to prevent early failures, reduce the time for processing proportional valves, and facilitate data adjustment and analysis

Inactive Publication Date: 2018-06-29
NANJING IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the characteristics of the electro-hydraulic proportional valve, it can only be applied to occasions that require continuous control of pressure, flow and direction without requiring high control accuracy. However, because it has no current feedback, once the proportional valve fails, maintenance personnel It is often impossible to judge the fault point in the proportional hydraulic circuit at the first time

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  • Current-type electro-hydraulic proportional valve current feedback system

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Embodiment Construction

[0013] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0014] The current feedback system of the current type electro-hydraulic proportional valve of the present invention includes a control system, a man-machine interface and a data acquisition system; the control system is connected with the man-machine interface and the data acquisition system respectively, and the control system includes an analog output module and an analog input module and electro-hydraulic proportional valve; the human-machine interface is equipped with an alarm system; the data acquisition system is equipped with hard disk storage and cloud storage; the electro-hydraulic proportional valve is connected to the analog output module and the analog input module respectively.

[0015] When in use, the analog input module, analog output module and electro-hydraulic proportional valve in the control syste...

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Abstract

The invention discloses a current-type electro-hydraulic proportional valve current feedback system, characterized in that an analog input module, an analog output module and an electro-hydraulic proportional valve form a control feedback loop, a signal is divided into two parts, one part is sent to a human-machine interface for displaying, and the other part is sent to a data acquisition system to perform data recording, archiving and transfer analysis. The current-type electro-hydraulic proportional valve current feedback system has the advantages that current feedback is performed on a proportional valve to replace a servo valve, time for maintainers to handle the proportional valve is shortened, and failure of the proportional valve is predicted in advanced so as to achieved failure control.

Description

technical field [0001] The invention relates to an electro-hydraulic proportional valve, in particular to a current feedback system for a current-type electro-hydraulic proportional valve. Background technique [0002] Electro-hydraulic proportional valve is referred to as proportional valve. Ordinary hydraulic valves can only perform fixed value control on the pressure and flow of liquid flow through pre-adjustment. The electro-hydraulic proportional valve is a valve that continuously and proportionally controls the flow direction, flow and pressure of the hydraulic system according to the input electrical signal. It consists of two parts: electro-mechanical proportional conversion device and hydraulic control valve body. The former converts the input electrical signal continuously and proportionally into mechanical force and displacement output, and the latter continuously outputs pressure and flow in proportion after receiving the mechanical force and displacement. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K37/00
CPCF16K37/0025
Inventor 嵇翔
Owner NANJING IRON & STEEL CO LTD
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