Research Of Crude Oil Pump Efficiency Analyzer Based On ARM

Oil transfer pump is an important power equipment of crude oil transportation pipeline. The power of the large capacity centrifugal oil pump is rather huge,and it consumes enormous energy per year. In our country, the transportation of more than ninety percent of the crude oil via pipeline. And the total power consumption generally takes a quarter of the whole cost of oil transportation.And more than ninety percent of the conveyed electricity is used on the oil transfer pump.Real-time monitoring of the running efficiency of oil transfer pump, and being familiar with the characteristics of the oil pump performance curve,is so important for the reasonable selection of ancillary facility,pump operating conditions regulation,and strengthening scientific management of the pumping stations.And that is also the mainstay of equipment maintenance.So, testing pump efficient value frequently and accurately,adjusting operation situation of oil transfer pump in time,reducing the loss of oil transfer pump,is the key link of improving the efficiency of the oil companies.That accords with energy conservation and emissions reduction targets and general requirements in our country.Research of crude oil pump efficiency analyzer based on ARM takes the thermodynamics as the core method,and it adopts STM32F103C8T6 processor,which is produced by ST Microelectronics,taking ARM Cortex- M3 as the core. The purpose of the researcher is to develop a measuring instrument with high precision,which using thermodynamic method measuring the pump efficiency,and setting data acquisition,data calculation, data upload, the result is shown as a whole.This topic is based on the “First Law of Thermodynamics”,deduced the formula which is based on the theory of thermodynamics to test the efficiency of the centrifugal pump in detail,joined the discussion and calculation method of properties like crude oil specific heat at constant pressure and temperature rise of isentropic compression,determined the high precise measurement range of pump efficiency.Finally, the measurement formula of crude oil pump efficiency is given,and the main parameters are determined.According to the requirement of the subject,selection for the modules of the crude oil pump efficient instrument has been made and drive circuit has been designed,the schematic diagram as well as PCB diagram have been drawn,and also the prototype has been made,on the hardware.Meanwhile,Realview MDK has been taken as a platform for modular programming,and the prototype has been debugged successfully,on the software.Finally, the author made pump efficiency test on the water pump platform in lab,and verified the feasibility and reliability of the instrumentation under the designing and testing conditions.