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introduction：The change of conveying medium includes two contents： a.Change in the density of the medium The density of the conveying medium is different from that of normal water，The lift of the pump、Flow and efficiency are unchanged，Only the pump shaft power varies with the conveying medium，It can be obtained by the following formula： b.Transport viscous liquid Viscous liquid has a great influence on pump performance，Influence degree and liquid viscosity、Pump structure type、The shape of impeller and surface roughness are related to many factors。 As the viscosity of the liquid increases，Reynolds number reduction，Hydraulic friction loss increases，lift、Flow depletion
2015-01-06 Reading quantity 2895
introduction：How to choose the model of forklift truck 1、Job function；The basic operation function of forklift truck is divided into horizontal handling、stacking/Take delivery、loading/unload、select。According to the operation function to be achieved by the enterprise, it can be preliminarily determined from the model introduced above。In addition，The special operation function will affect the specific configuration of the forklift，Such as carrying paper rolls、Hot metal，Forklift mounting accessories are required to perform special functions。 2、Operation requirement；Forklift operating requirements include pallet or cargo specifications、Lifting height、Operating channel width、Gradients and other general requirements，You also need to consider the effectiveness of the operation
2015-01-06 Reading quantity 2880
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 2908
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 2815
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 2893
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 1470
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 1543
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 1459
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 2836
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 2906
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