Study on Detection of Pressure, Flow and Temperature in Distributed Lubrication System

The dedicated lubricating system is used to supply lubricants for large equipments in metallurgical industry. The traditional lubrication system easily leads to lubrication failure for unreasonable design and poor management. A new lubrication system adopting distributed architecture is introduced in this paper. In distributed lubrication system, parameters of oil pressure, flow and temperature are detected to ensure reliable and accurate lubrication for each point. The methods of parameter detection are discussed in detail. The pressure relays are replaced by pressure sensors and accurate pressure control is realized. The control of lubrication volume based on the length of time is changed to accurate control based on the flow of the lubricants. The flow data can be obtained through analyzing the pulses from the three flow sensors installed parallelly on the main pipe. One-wire intelligent digital temperature sensor DS18B20 is used to measure the temperature of the lubrication point. The detection methods have been successfully applied in the lubricating terminal and the lubrication performance has been greatly improved.