A solenoid valve control system and control method for anti-hammer

Abstract

The invention provides an electromagnetic valve control system and method capable of preventing water hammer effects. The control system comprises a single-chip microcomputer control circuit module and controllable silicon, and the single-chip microcomputer control circuit module comprises a single-chip microcomputer, an actuation time adjusting circuit used for adjusting the actuation time of anelectromagnetic valve, an alternating current zero cross detection circuit used for detecting the zero cross point of working voltage, an electromagnetic movable iron core position detection circuit used for detecting the position of a movable iron core of the electromagnetic valve, a remote switch used for providing switching signals of the electromagnetic valve and a controllable silicon conduction angle control circuit used for controlling the conduction angle of the controllable silicon. The single-chip microcomputer is used for controlling the change of the conduction angle of the controllable silicon through the controllable silicon conduction angle control circuit to change magnetic force of a coil of the electromagnetic valve, so that the opening and closing stroke of the movable iron core of the electromagnetic valve is divided into multiple position sections, and then the electromagnetic valve is slowly opened or closed. According to the system, the electromagnetic valve canbe intelligently opened or closed slowly simply by adding the low-cost control circuit to a common direct-acting-type electromagnetic valve, and thus the function of preventing the harm of the water hammer effects is achieved.

Description

technical field [0001] The present invention mainly relates to the related field of solenoid valve control technology, in particular to a hammer-proof solenoid valve control system and control method. Background technique [0002] Direct-acting solenoid valve has the characteristics of small size and large flow rate, and is widely used in various fields. When there is liquid or gas flowing in the pipeline, if the solenoid valve suddenly opens or closes, water hammer will occur; water hammer will cause the pressure of the pipeline to rise suddenly, which can reach several times or dozens of times the normal working pressure of the pipeline. Such a large pressure fluctuation will cause great harm to the pipeline system, such as causing strong vibration of the pipeline, disconnection of pipeline joints, damage to valves, and bursting of pipelines. [0003] In the existing technology, most of the devices such as adjustable electric valves are used to slowly open or close the va...

AI Technical Summary

Problems solved by technology

When there is liquid or gas flowing in the pipeline, if the solenoid valve suddenly opens or closes, water hammer will occur; water hammer will cause the pressure of the pipeline to rise suddenly, which can reach several times or dozens of times the normal working pressure of the pipeline. A large pressure fluctuation will cause great harm to the pipeline system, such as causing strong vibration of the pipeline, disconnection of pipeline joints, damage to valves, and bursting of pipelines, etc.

[0003] In the existing technology, most of the equipment such as adjustable electric valves are used to slowly open or close the valve to avoid the occurrence of water hammer, but the above-mentioned technology has defects such as high manufacturing cost and complicated control signals.

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