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introduction：Steam turbine plant(Turbine included、Condenser and feed water heater, etc)Thermal performance，Including heat rate and heat efficiency，It is mainly related to the thermal system used。 Thermodynamic system diagram1[300Schematic diagram of thermal system of megawatt turbine plant]For the use of reheat 300Schematic diagram of the thermal system of a MW condensing turbine plant。The steam from the boiler goes through the steam chamber into the high-pressure cylinder to expand and do work。Exhaust steam from high pressure cylinder,Except for a small part of the feed water heater heating the feed water,The rest leads to the reheater。After the steam is reheated in the reheater，To the medium pressure cylinder continue to expand for work。Medium voltage
2015-01-06 Reading quantity 2903
introduction：jingji hesuan Economic accounting economic calculation A number of economic activities to improve the production and management results of enterprises and their methods，It is an objective economic category of socialism。It aims to obtain the best economic benefits，Operational accounting、Statistical accounting and business accounting and other means，The consumption of living labor and materials in the process of production and management and the results achieved,Record in value form、compute、Comparison and analysis,In order to explore the potential and ways of increasing production and saving。So its a planned way of managing the economy。China has always put the economy
2015-01-06 Reading quantity 2813
introduction：0、Presentation of problem Jiaozuo Danhe power generation Co., LTD#1The capacity of the generator set is110MW，#1After the transformation of furnace dust collector，#1Furnace A B induction motor by475KWIncrease to1000KW，The capacity has been increased over the original motor525KW，Increase the plant power consumption rate。And the motor frequency control operation，Is to reduce the plant electricity rate、Effective measures and effective means to save electricity and increase efficiency。#1The speed regulation of furnace motor is regulated by baffle plate，Duct pressure loss is serious，Great waste，Speed control by frequency conversion，The continuous stepless speed regulation of motor speed is realized，Wide speed range，High adjustment accuracy，High efficiency,The soft of the motor is realized
2015-01-06 Reading quantity 2889
introduction： SKFImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。]The vibration is caused by the contact characteristic excitation of the contact pair，Therefore, the factors affecting the contact characteristics of the contact pair，Like load，Both speed and lubrication affect the vibration characteristics of bearings。 SKFImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。Into the
2015-01-06 Reading quantity 1468
introduction：Rolling bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Early failure form，There are mainly：rupture、Plastic deformation、wear、corrosion、Under normal conditions, fatigue is the main internal influencing factor of contact fatigue：hardness、intensity、toughness、Abrasion resistance、Corrosion resistance、State of internal stress（Beyond conditions of service） 1. Quenched steel in horse
2015-01-06 Reading quantity 1539
introduction：On the basis ofTIMKENImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。]Formation mechanism of grinding metamorphic layer on working surface，The main factors affecting the grinding metamorphic layer are grinding heat and grinding force。The following is an analysis aboutTIMKENImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fag
2015-01-06 Reading quantity 1456
introduction：Improvements to manual forklifts The development trend of manual forklifts is mainly to absorb the advantages of electric forklifts，To gradually improve the advantages of manual forklift trucks in the process of use，Because some projects can not be completed by electric forklifts。In this way, the main responsibility is completely entrusted to the manual forklift。 1、 The second is security。Whether its the safety of the shippers，Property safety of goods，All need a good guarantee，Manual forklift cargo does not have a good self-fixation method，At the same time, people do not have a security guarantee during the consignment process。
2015-01-06 Reading quantity 2834
introduction：one.Use and scope of application Our company successfully developed energy-saving new products----Coal-burning air heating furnace(Referred to as hot blast stove),It is a kind of all-metal structure hot blast stove,Thermal efficiency65%above,Endowed heat[Clean air.pollution-free,Rapid warming,Easy to use and operate.Reliability and other advantages,It is the ideal supporting equipment for all types of dryers,Noodles.grain.Seed,Tea leaf.vermicelli.starch,fodder.Chemical and other dry hot air source,Paper can also be made.Baking paint and other baking hot air source. two,Main structure and working principle
2015-01-06 Reading quantity 2904
introduction：1）The assembled die，Its closing height should meet the design requirements。 2）After the die handle is loaded into the upper die seat，The vertical error of the axis line to the plane of the upper die seat，In the total length range is not greater than0.05mm。 3）After the guide post and guide sleeve are assembled，The axis line shall be perpendicular to the bottom plane of the lower die seat and the upper plane of the upper die seat respectively。 4）The upper plane of the upper die seat should be parallel to the bottom plane of the lower die seat。 5）The matching gap value of each pair of guide column and guide sleeve of the loading mold holder shall meet the specified requirements。 6）The assembled mold holder，The upper die seat is along the guide post、Downward movement should be smooth，non-retardation。 7）loading
2015-01-06 Reading quantity 1594
introduction：SKFbearing[SKFbearing:SKFThe full name is“Svenska Kullager-Fabriken”The Chinese transliterated name is“SKF”；SKFThe group is headquartered in Gothenburg, Sweden，Is a leader in bearing technology and manufacturing。SKFBearings can be divided into sliding according to different specific structures and similarities and differences in working propertiesSKFBearing and rollingSKFbearing]Now it is also widely used，But there are more problems than standard bearings，Especially in the choice of bearing type。For general machine tools,The life of the spindle assembly mainly refers to its service life to maintain spindle accuracy,therefore
2015-01-06 Reading quantity 1718
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