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Detection restorative method of hydraulic valve jamming and chucking faults

A repair method and jamming technology, which are applied in the directions of cleaning methods using liquids, chemical instruments and methods, cleaning methods and utensils, etc., can solve the problems of normal working interference of the system, inability to overcome the clamping force, etc., and improve the service life. , The use effect is good, the cost is low

Inactive Publication Date: 2013-09-11
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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  • Detection restorative method of hydraulic valve jamming and chucking faults
  • Detection restorative method of hydraulic valve jamming and chucking faults
  • Detection restorative method of hydraulic valve jamming and chucking faults

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1: Stuck Fault Detection and Self-Repair

[0041] refer to figure 2 , 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.

[0042] 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 prop...

Embodiment 2

[0049] Example 2: Clamping fault detection and self-repair

[0050] refer to figure 2 , image 3 and Figure 5 , 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.

[0051] 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 a detection restorative method of hydraulic valve jamming and chucking faults, which comprises a detection step, a judgment step and an execution step which are carried out through electric connection. The judgment step is that jamming and chucking membership degree judgment is given out through a fuzzy multi-criteria decision making theory method according to average value information of control signals output through the detection step, frequency of shimmy signals, peak-to-peak value and wave distortion. By means of the technical scheme, the detection restorative method can detect and judge the jamming and chucking faults of a slide valve plug in real time and repair the jamming and chucking faults caused by pollution and imbalance radial force by using supersonic vibration, and the detection restorative method is simple and convenient in method and low in cost.

Description

technical field [0001] The invention relates to a processing method for hydraulic valve failure, in particular to a detection and repair method for hydraulic valve jamming failure. Background technique [0002] The spool valve mechanism is the most widely used structural form in all kinds of hydraulic valves. The spool valve is composed of three main components: the valve body, the valve core and the valve cavity. By changing the position of the valve core in the valve body and valve cavity, the spool valve can be Realize the change and on-off of fluid flow direction. The sliding valve jamming or even jamming failure is one of the most common failures and failure forms in the hydraulic system, which can be generally divided into two categories: hydraulic jamming, jamming and mechanical jamming. In layman's terms, jamming refers to the intermediate state between normal working conditions and jamming. Tightening means that the valve core cannot move. Jamming means that the va...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K37/00B08B3/12
Inventor 李伟波张华芳
Owner SHAOXING UNIVERSITY
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