Electromagnetic valve fault detection circuit and detection method

Abstract

The invention belongs to the technical field of electromagnetic valve monitoring, and discloses an electromagnetic valve fault detection circuit and detection method. Each electromagnetic valve groupin the electromagnetic valve fault detection circuit is connected with an ampere meter, the ampere meters are connected with a PLC control system, the alarm signal output end of the PLC control systemis connected with an alarm device, and the alarm device is arranged at the position of an operator. The detection method comprises the steps that the ampere meter detects the current of the electromagnetic valve group, if the current value is between the upper limit value and the lower limit value set by the ampere meter, the alarm device alarms, and the system works normally; if the current value is greater than the upper limit value set by the ampere meter or less than the lower limit value set by the ampere meter, the alarm device stops alarming, the system breaks down, and the PLC controlsystem cuts off the production request signal. After the electromagnetic valve breaks down, a sterile filling system automatically stops, the product production quality is guaranteed, the productioncost is reduced, and production resources are saved. The method is suitable for detecting electromagnetic valve faults.

Description

technical field [0001] The invention belongs to the technical field of solenoid valve monitoring, and relates to a solenoid valve fault detection, in particular to a solenoid valve fault detection circuit and a detection method. Background technique [0002] Solenoid valve is an industrial equipment controlled by electromagnetic. It is an automatic basic component used to control fluid. It belongs to actuator and is not limited to hydraulic and pneumatic. It is used to adjust the direction, flow, speed and other parameters of the medium in the industrial control system. Solenoid valves can cooperate with different circuits to achieve the expected control, and the control accuracy and flexibility can be guaranteed. There are many kinds of solenoid valves. Different solenoid valves play a role in different positions of the control system. The most commonly used ones are check valves, safety valves, directional control valves, and speed regulating valves. [0003] The hydroge...

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Problems solved by technology

[0003] The hydrogen peroxide aseptic filling system used in the production of dairy production enterprises usually uses solenoid valves to control the flow of hydrogen peroxide. However, during the use of solenoid valves, it is inevitable that failures will occur and cannot work normally. In the existing hydrogen peroxide aseptic filling system , there is no fault detection and alarm link for solenoid valves. When the solenoid valve fails, if the inspectors fail to find out in time, then the products produced after the solenoid valve fault need to be isolated and scrapped. This not only reduces production efficiency, but also caused huge economic losses

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