Study On The Vacuum Degree Of Condenser In Power Plant Based On Lean Six Sigma

Along with the domestic environmental protection pressure and the market competition of electric power enterprise further intensifying,each economic index of power plant is the core competition power that participates in the market competition.The condenser is heat exchange equipment,which is an important part of the steam turbine.It will drive a steam turbine after condensed water changed into vapor.The vacuum will directly affect the quality of the coal consumption for power generation,is the most important economic priority among units and power generation enterprises.This thesis is trying to implement Lean Six Sigma Management in A company under the background of the project were discussed,so as to explore a line with the business development of the ideal scheme.It gives the full implementation of the scheme of Lean Six Sigma effective safeguard measures.At present,most of the research is to investigate which factors in the power system has a significant influence on the vacuum of condenser,there is a big lack of solution that whether there is interaction,in the factors and under what conditions the optimal vacuum of condenser etc.Based on previous studies,the innovation will introduce lean six sigma management method into the electric power production.Through the powerful functions of MINITAB software,the comprehensive influencing factors of vacuum are taken into the experiment,considering the interaction of various factors,to determine the optimum vacuum of condenser,and to provide a new way of thinking for lean production of electric power enterprises.This paper studies how to use the Lean Six Sigma method to adjust the vacuum degree of the condenser and determine the optimum value.First of all,in the A company,professionals of all levels and positions are organized through brainstorming and fishbone diagram to find out the factors affecting the vacuum of the condenser,screening out three significant factors.Then,using MINTAB software to create 3-factor and 2-level full factorial experiment,put forward the DOE implementation through the experimental design of response surface,get the regression equation by regression analysis,and calculate the fitted values according to the change of factor level,to control the project management.At the same time,in the case of abnormal project,the method of predicting the influence degree in advance is adopted to minimize the risk so as to realize better control over the project.Finally,with the best factor of the vacuum degree of thecondenser obtained,we put forward the concrete feasible improvement measures,which are applied in the actual production,and the effect of the improvement measures is confirmed.The difference between the vacuum of the condenser and the pure condensing unit in the same condition is greatly reduced.The experimental results show that the improvement of condenser vacuum meets the design expectation.The innovation of this paper is using Six Sigma method to study the vacuum of condenser,the reasonable ratio of circulating pump current,condenser temperature,and influent load provides the basis for the condenser vacuum degree adjustment and maintenance to improve power generation unit of the economy.