Control And Protection Of Two-speed Motor In Cleaning Process Of Storage Tank

The automation and systematization of the oil tank cleaning is the inevitable result of the development of the oil storage and transportation industry.The oil tank cleaning technology has gone through the gradual development from the manual cleaning,the mechanical cleaning to the automatic cleaning.With the continuous development of oil exploration technology,the pace of national strategic oil reserve construction continues to accelerate,for oil tank oil storage use is increasing year by year,in order to ensure the stable operation of oil storage tanks,the need for cleaning of the storage tank,in order to achieve high efficiency,oil tank cleaning and environmental protection,in order to improve the domestic oil tank machinery cleaning technology to make full use of time advantage,maintain green high efficiency in cleaning construction work,in-depth analysis of the mechanical cleaning equipment of the existing problems in the operation of the company in Daqing oil storage and sales and puts forward the corresponding solutions.This paper analyses and studies the oil tank cleaning equipment for tank in different medium and different operating environment problems and stable operation of the equipment,the research of double speed motor to replace the original equipment of motor mechanical transmission,control and protection of double speed motor,using the soft starter for motor starting mode,starting characteristics and protection mode of soft starter.In 2015 to test the new equipment after transformation in Manchuria qagan oil station and the-13 Bay in Haita oilfield combination station oil tank cleaning construction site,found some problems in the construction of the cleaning equipment,research and correct repair.After a year of cleaning equipment construction,in the cost savings,stable operation,reduce labor intensity,green environmental protection and improve production capacity,compared with the original equipment has been greatly improved.According to the present situation of the mechanical cleaning equipment in the storage and transportation branch,combined with the actual production operation,this paper puts forward the reform of the oil tank cleaning equipment,which makes the cleaning equipment more stable.At present,the reformed tank cleaning equipment has been carried out in Daqing,Liaohe and Hailar oilfield..