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Intelligent hydraulic valve

A hydraulic valve and intelligent technology, applied in the field of hydraulic valves, can solve problems such as inability to overcome clamping force and interference with normal operation of the system, and achieve the effects of improving reliability and life, reducing damage and saving energy.

Inactive Publication Date: 2012-07-25
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The limitation of this idea is that sometimes the clamping force cannot be overcome only by the electromagnetic force of the valve body itself, and the sharp change of the electrical signal will also interfere with the normal operation of the system.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: Stuck Fault Detection and Self-Repair

[0039] refer to figure 1 , figure 2 and Figure 4 , an intelligent hydraulic valve, including an electro-hydraulic proportional valve 30 , the electro-hydraulic proportional valve 30 includes a valve body 35 , a spool 34 , a valve cavity 33 for placing the spool, and a proportional electromagnet 24 . It also includes an ultrasonic generator 2, an ultrasonic transducer 3 and an intelligent controller 1 capable of detecting jamming faults of the electro-hydraulic proportional valve and controlling the operation of the ultrasonic generator. The intelligent controller 1 is electrically connected with the ultrasonic generator 2 and the electro-hydraulic proportional valve 30 respectively.

[0040] The output end of the ultrasonic generator 6 is electrically connected with the two electrodes of the ultrasonic transducer 7, and the ultrasonic transducer 7 is fixedly connected to the upper side of the electro-hydraulic pro...

Embodiment 2

[0047] Example 2: Clamping fault detection and self-repair

[0048] refer to figure 1 , image 3 and Figure 4 , an intelligent hydraulic valve, including an electro-hydraulic proportional valve 30 , the electro-hydraulic proportional valve 30 includes a valve body 35 , a spool 34 , a valve cavity 33 for placing the spool, and a proportional electromagnet 24 . It also includes an ultrasonic generator 2, an ultrasonic transducer 3 and an intelligent controller 1 capable of detecting jamming faults of the electro-hydraulic proportional valve and controlling the operation of the ultrasonic generator. The intelligent controller 1 is electrically connected with the ultrasonic generator 2 and the electro-hydraulic proportional valve 30 respectively.

[0049] The output end of the ultrasonic generator 6 is electrically connected with the two electrodes of the ultrasonic transducer 7, and the ultrasonic transducer 7 is fixedly connected to the upper side of the electro-hydraulic p...

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Abstract

The invention relates to an intelligent hydraulic valve, which comprises an electro-hydraulic proportional valve, an ultrasonic generator, an ultrasonic transducer and an intelligent controller. The electro-hydraulic proportional valve consists of a valve body, a valve spool, a valve cavity and a proportional electromagnet, the valve spool is placed in the valve cavity, and the intelligent controller can detects jamming and chucking failures of the electro-hydraulic proportional valve and controls operation of the ultrasonic generator. The ultrasonic generator and the ultrasonic transducer are arranged in pair, and the intelligent controller consists of a dithering signal generating module, a system control signal module, a stabilized voltage supply module, a PID (proportion, integration and differentiation) control module, a power amplifying module, a sampling module, a signal processing module, a negative feedback module, a jamming and chucking judging module and an ultrasonic generator control module. By the aid of the intelligent hydraulic valve, the jamming and chucking failures can be detected in real time in an online manner, and the jamming and chucking failures caused by pollution and imbalance radial force can be repaired by the aid of ultrasonic vibration.

Description

technical field [0001] The present invention relates to a hydraulic valve, in particular to a hydraulic valve capable of real-time detection, judgment and order execution to repair the jammed fault of the spool valve core and repairing the jammed fault caused by pollution and radial force imbalance by using ultrasonic vibration Smart hydraulic valve. Background technique [0002] The spool valve mechanism is the most widely used structural form in various hydraulic valves. The spool valve is composed of three main parts: the valve body, the valve core and the valve cavity. By changing the position of the spool in the valve body cavity, the spool valve can be Realize the change and on-off of fluid flow. Spool valve jamming or even jamming fault is one of the most common faults and failure forms in the hydraulic system, which can generally be divided into two categories: hydraulic jamming, jamming and mechanical jamming. In layman's terms, jamming refers to the intermediate ...

Claims

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Application Information

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IPC IPC(8): F16K37/00B08B3/12
Inventor 李伟波张华芳
Owner SHAOXING UNIVERSITY
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