Bearing and photovoltaic power generation

Bearing and photovoltaic power generation, 2019 - 09 - 12 ( Source: Timken Timken) As one of the representative of the clean energy, photovoltaic power generation for the human green life provides endless imagination accompanied by every day the sun rises, the solar energy conversion of current can be driven directly washing machines, refrigerators, radios, computers and so on work; Supplied by solar boiling hot water flowing bathroom, kitchen. If in the rainy day, people can use solar energy stored in the accumulator. And all this is freiburg, Germany. Freiburg in Germany the most adequate city sunshine, annual average sunshine time more than 1800 hours, the average annual solar radiation is 1115 kilowatts per square metre. Advantages to make every corner here with the application of photovoltaic power generation. Here, each house is a collector. Through the architectural design of the high efficient heat insulation material, pervious to light material, energy storage materials such as organically integrated together, to absorb as much as possible and keep the house for people to use solar energy. Here is no longer rely on centralization, high energy consumption, high pollution of traditional fossil energy, instead, the pieces of barrier in the blue sky of distributed photovoltaic power station and lush vegetation. Freiburg roof photovoltaic silicon wafer, the key of the photovoltaic solar power generation is to use solar cells absorb 0. 4μ m ~ 1。 1μ Wavelength (m. In view of the silicon) The sunlight, the light energy directly into electricity output a way of generating electricity. Generally speaking, high energy conversion efficiency of solar cell silicon material. Solar silicon wafer silicon material performance, although good, but it's up to 7 degrees, mohs hardness than the hardness of steel ( 5. 5 ~ 6 degrees) Also high, so difficult processing has become an important label of silicon wafer production. The picture above shows the solar cell manufacturing process from raw material silicon ingot, silicon particles to the silicon wafer, and then assembled into the whole process of solar panels. A key part of silicon wafer is after cutting, cutting, grinding and link to get a few process, the highest in slicing process requirement. The silicon slicing method generally used the cutting. Tashan stone,. Line with king kong online adhesion hardness higher silicon carbide. Slicing machine through the coupling of motor drive spindle, cutting roller on uniform thousands of gold thread that are connected to the two sets of configuration of the same main shaft at both ends. Spindle speed is as high as 2000 to 3000 revolutions per minute, and positive &negative once per minute, king kong line moving to and fro like a saw rapid cutting hard silicon rod. Monocrystalline silicon slicing machine principle and the structure will be harder than steel silicon rods at the same time cut into thousands of slice thickness is about 0. 2 mm thick silicon wafers, slicing machine spindle at high speed, the process of the functioning of the frequent positive and negative with radial load. In this case, to make the spindle precision work stably and reliably, for the evenness of the thickness of the silicon wafer and surface quality, precise and reliable bearing configuration is particularly important. Silicon slicing machine spindle precision bearing structure, silicon slicing machine 'hardcore' common silicon slicing machine there are two kinds of main shaft bearing configuration scheme. One is using precision angular contact ball bearing, namely four columns is bigger size of precision Angle contact ball bearing as a fixed end, two columns of smaller size of precision Angle contact ball bearing configuration as the floating end back to back. Because of the speed of the ball bearing has excellent performance, in conjunction with the grease lubrication can achieve higher speed. Another with two back-to-back configuration of single row taper roller bearings. Tapered roller bearings can realize pure roll, to avoid the excessive sliding friction heat. With timken excellent lubrication and sealing solution, a spindle only need two bearing which can meet the requirements of high load high speed. Both precision angular contact ball bearings and precision taper roller bearing, timken can provide high quality product, meet the strict standard of monocrystalline silicon slicing, and can provide, including cutting, cutting, grinding and slice of silicon wafer manufacturing the whole process of the solution. At present, the domestic leading silicon wafer cutting equipment, precision bearings Timken has been adopted and implemented the outstanding performance. With the increasingly serious environmental problems, the use of traditional energy gradually is restricted, for the development and utilization of new energy has become increasingly urgent. Bearing as the foundation and key parts not only play a central role in traditional industry, can also help them in the emerging industries such as photovoltaic.