Monitoring and warning circuit for leak tightness of electric actuator

Abstract

The invention relates to a monitoring and warning circuit for the leak tightness of an electric actuator. The warning circuit comprises a low-pass filtering circuit, a signal magnification conditioning circuit, an A / D conversion and central processing circuit, a liquid crystal display circuit, a serial port communication circuit and a voltage comparison warning circuit, wherein the low-pass filtering circuit is connected with the A / D conversion and central processing circuit and the voltage comparison warning circuit through the signal magnification conditioning circuit; the A / D conversion and central processing circuit is respectively connected with the liquid crystal display circuit and the serial port communication circuit. The warning circuit has the benefits that leakage of the electric actuator at the monitoring point is small, the alarm can be given out in the first time, and leakage water amount can also be displayed through digital display, and as a result, that the parts of the electric actuator are damaged caused by small leakage or failure sealing can be directly avoided, and the adaptive capacity of the electric actuator to the environment is greatly enhanced.

Description

technical field [0001] The invention relates to an alarm monitoring circuit, in particular to an electric actuator sealing monitoring and alarm circuit. Background technique [0002] Electric actuators are widely used in various environments, including open air, rainy, underwater and other environments. When the electric actuator is used in such an environment, its sealing performance plays a vital role. Only many manufacturers of electric actuators have repeatedly improved and improved the sealing performance of the electric actuator. At present, the protection level IP67 has become very popular, and some Advanced enterprises have reached IP68 or even higher, but while improving the sealing of electric actuators, they have been unable to monitor the sealing of electric actuators, that is to say, when water leakage occurs when electric actuators are in use, or Neither the user nor the manufacturer can know the leakage of other liquids, and blindly improve the sealing perfor...

AI Technical Summary

Problems solved by technology

When the electric actuator is used in such an environment, its airtightness plays a vital role. Only many electric actuator manufacturers have repeatedly improved and improved the airtightness of the electric actuator. At present, the protection level IP67 has been very popular, and some Advanced enterprises have reached IP68 or even higher, but while improving the sealing of electric actuators, they have been unable to monitor the sealing of electric actuators, that is to say, when water leakage occurs when electric actuators are in use, or Leakage of other liquids, neither the user nor the manufacturer can know, blindly improving the sealing performance, but ignoring the monitoring and monitoring of sealing leakage

Once the sealing of the electric actuator fails, it is likely to cause damage to the electrical control part and the motor in a short time, and the mechanical parts such as the reducer will accelerate corrosion due to water leakage.

It is far from enough to install a heater in the box of the electric actuator, and it is impossible to use it all the time.

Therefore, the sealing has become a huge obstacle to the reliability of electric actuators.

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