Experimental Study Of Water Evaporation In A Vacuum Transformer Oil Trace

Oil is non-renewable resources. With the continuous exploitation of oil resources,the global stockpile of petroleum resources is becoming less. In the process ofmodernization of society,the non-renewable resources are increased such as crude oilproduction and consumption with the increasing demand for energy.The rapiddevelopment of the society cannot leave the electricity, the transformer is the key to thedevelopment of electric power equipment, and transformer oil is in great demand, strictrecycling.Transformer oil will be affected by different degree of pollution in storage,transportation and use process,lead to decrease or loss of the oil physical and chemicalproperties. The moisture in the transformer oil will not only increase the acid value andinsertion,and reduce the oxidation stability,breakdown voltage and the insulationresistance, seriously will affect the service life of the transformer or even cause anaccident. The contaminated waste transformer oil without regeneration process causesnot only the waste of resources, but also serious environmental pollution. The vacuumfilters oil machine has a significant effect for removal of water in the oil to recover itsfunction. But the existing vacuum filter oil machine is not clear controlling parameters,high energy consumption, multiple circulation, etc. This paper is on the basis of a largenumber of experimental studies, using the single factor experiments and uniformexperiment discussed the temperature, vacuum degree, ventilation, ventilation location,processing time and initial water content of the oil on the dehydration rate of thevacuum filters oil machine. Using LabVIEW software program comply data acquisitionsystem, through the sensors collecting signals, vacuum filter oil machine controlparameters and real-time acquisition system. In this paper, the main work includes:(1)The preparation stage is to consult the relevant literature,understand the vacuumevaporation related theoretical knowledge combined with vacuum oil filter equipmentprocess to find factors affecting efficiency and its influence mechanism analysis.Introducing the basic concept of the LabVIEW software,function characteristics andapplication prospect, provide theoretical knowledge for the preparation of dataacquisition system.(2)Set up the experimental platform. First,paper made a detailed introductioninclude the principle of the data acquisition system, the choice of acquisition system, thetype of data acquisition module and so on.Followed by the introduction of sensorselection principle, influence factors to consider, ultimately determine the sensor typesrequired for this experiment.Finally introducing the process of building theexperimental device, the vacuum filter oil machine dehydration principle wasintroduced in detail, analyses the factors affecting the vacuum filters oil machinedehydration efficiency and oil water content detection methods selection.(3)Procedure formulation process of data acquisition system is introduced in this paper. Programming is mainly divided into the following steps:signal collection,thewaveform parameter graph display, data storage,sampling time setting and dataacquisition system running and debugging, finally get the real-time data acquisitionsystem.(4)Through the single factor experiment,find out dehydration efficiency changerule and the most advantage in different temperature,vacuum, vacuum filter oil machineventilation, ventilation location, processing time and the initial moisture contentconditions of oil,get the range of each factor,preparation of uniform experimenttable,optimizing the experiment.(5)Through optimizing the experiment, find the optimal parameter combination:the lower ventilation (34L/min),0.074Mpa(X1),41℃(X2),6min(X3),250ppm(X4),the linear regression fitting equation: Y=49.744-1.455×10-3X2X4+2.275×10-2X1X2X4,dewatering rate:89.27%,validation for dewatering rate:87.92%,optimization isreasonable.