As Unit 1 of Xianju Pumped Storage Power Station succeeded in grid connection and power generation was completed here, the largest single unit capacity of domestic self-supporting pumping equipment reached 375,000 KW, which indicates that our country has completely mastered the core technologies of large-scale pumped storage power plants.
Jianguo Hai, general manager of Zhejiang Xianju Pumped Storage Power Plant, said that pumped storage is the most economical large-scale energy storage method in the world today. Prior to 2003, the key technologies of large-scale pumping units above 150,000 kilowatts in China were in blank. All equipment needed to be imported and the prices were high. He introduced the key technical difficulty is that a set of equipment must take into account two pumping and generating the opposite conditions, resulting in positive and negative performance, efficiency and stability, and generating motor high speed and high loss density and other series of problems .
Under the support of the State 973 Program, the project has successfully solved the technical bottleneck after 10 years of systematic breakthrough and has successfully developed large-scale pumped storage units and complete sets of equipment with complete independent intellectual property rights and achieved large-scale engineering applications. The unit has been applied and promoted to 40 units , Its market share jumped from 0 to 78%, and forced the price of similar imported equipment to drop by one third from 600 yuan / kW.
It is reported that, according to national planning, by 2025 pumped storage capacity of 100 million kilowatts, currently only put into operation about 24 million kilowatts, the development of broad prospects.
Pulverizers are machines that pulverize large solid materials to the required size.
According to the size of the crushed material or the crushed material, the mill can be divided into coarse crusher, medium crusher, fine mill and superfine mill. There are four kinds of external forces applied to the solid in the grinding process: pressing, cutting, impact and grinding. Press rolling is mainly used in coarse and medium crushing, suitable for the crushing of hard materials and bulk materials. Shearing is mainly used in fine crushing, suitable for the crushing of ductile materials. Impact is mainly used in medium crushing, fine grinding, ultrafine grinding, suitable for crushing brittle materials. Grinding mainly in fine grinding, ultrafine grinding, suitable for small pieces and fine particles.
The crusher makes use of the high speed relative motion of the movable tooth plate and the fixed tooth plate, so that the crushed object can be crushed by the comprehensive action of tooth impact, friction and the impact between the materials. The crusher is suitable for crushing Chinese herbs, precious medicinal materials, ores and chemical raw materials in small batches in various varieties, alloys, metallurgy, geology, scientific research and other units.
The pulverizer machine has the advantages of simple structure, solid, stable operation and good crushing effect. The pulverized material can be discharged directly from the grinding chamber of the main machine. The particle size can be obtained by replacing the mesh screen with different aperture. The powder collecting chamber adopts the completely closed silencer structure, which can effectively reduce the working noise. In addition the machine is all stainless steel. The inner wall of the casing is machined to achieve smooth surface, which changes the phenomenon of rough inner wall and powder accumulation of the previous models, so that the production of drugs, food, chemical industry and so on is more in line with national standards and meet the requirements of GMP.
Pulverizer Machine,Crushing Machine,Milling Machine,Grinding Mill, Grinding Machine
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