An online monitoring and alarming instrument for oil leakage based on ultrasonic emulsifying technology

摘要

An online monitoring and alarming instrument, based on ultrasonic emulsifying technology for measuring oil leakage of circulating cooling systems is put forward in this paper. The instrument consists of a data acquisition circuit which is based on a single chip microprocessor, ultrasonic emulsifiers, photoelectric probes, and remote alarming devices. The key parts of the instrument are the ultrasonic emulsifier and the photoelectric probe. The former changes oil concentration in a sampled solution of cooling water into turbidity; and the latter detects the turbidity. Precision and reliability of the instrument depends on the function of the ultrasonic emulsifier and the photoelectric probe. Different types of oil need different input power of the ultrasonic emulsifier to yield full emulsification. Input power selections for the ultrasonic emulsifier driver, the structure of sampling tank, and the instrumentation static modeling results are presented in this paper.