Centrifugal fan is a kind of high energy consumption equipment. The proportion of power resources consumed in stone processing is relatively large. With the current shortage of energy in China and the popularization and application of high-yield and efficient working surfaces, energy conservation and consumption reduction have become stone production enterprises. The issue of general concern is that many stone manufacturing enterprises take reducing the power consumption of fans as an important task at present. In addition to reducing the power consumption of the fan, in addition to improving the efficiency of the fan itself, it is most important to reasonably choose the adjustment method of the fan, because the load of stone production varies with the needs of the process, and most fans need to adjust the flow frequently according to the load of the host. . At present, the energy-saving adjustment methods of fans in stone processing enterprises are relatively old, and throttling adjustment is generally used. When throttling adjustment is used, the flow of the fan is mainly adjusted by regulating valves or throttling baffles. The throttling flow of the fan is large, and even at more than 50% at low load, due to the throttling loss and deviation from high-efficiency operation, Energy waste is very serious. And if the speed of the fan is adjusted, the throttling loss can be cancelled, and the fan can always be operated in the high-efficiency zone, so the electric energy can be greatly saved.
Improving manufacturing methods is an important factor in the development of modern high-performance centrifugal compressors. If complex lines designed to improve performance cannot be accurately machined, the application of modern cutting-edge analysis and design techniques will not make much sense. The ability to achieve current levels of efficiency is inseparable from current manufacturing methods. However, this view was not initially shared. In the early stages of the development of centrifugal compressors, the design level was limited to a certain extent by the manufacturing methods of the time. Equipment manufacturers had to use several limited methods at the time when designing, including machining (i.e. turning, three-axis milling), joining (i.e. welding, riveting) and casting. It can be said that adjusting the speed of the fan to run the fan is an effective way to save energy and reflects the new trend of the current building material industry.
Centrifugal fans are auxiliary production equipment commonly used in stone processing enterprises. They are mainly used in ventilation and dust removal devices, such as cyclones and bag dusters in the stone cutting and grinding processes. All need to use centrifugal fans to remove dust from the production site to ensure that The production environment is clean and protects the physical and mental health of producers. Fan is a kind of equipment with high energy consumption, and the power resource of consumption fan is larger in stone processing. With the current shortage of energy in China and the popularization and application of high-yield and high-efficiency working surfaces, energy conservation and consumption reduction have become a common concern of stone manufacturing enterprises. Many stone manufacturing enterprises take reducing power consumption of fans as an important task at present. In addition to reducing the power consumption of the fan, in addition to improving the efficiency of the fan itself, it is most important to use a reasonable adjustment method for the fan.
At present, centrifugal fans belong to general machinery, and there are many downstream demand industries, including petroleum, electric power, chemical industry, textile, rail transportation industry and so on. Most of these downstream industries are in a period of rapid development, with increased investment in fixed assets and faster equipment upgrades, which have brought a lot of room for development in the wind turbine industry. Data show that in recent years, the sales revenue of China's wind turbine industry has increased year by year. In 2013, the industry's sales revenue reached 80.873 billion yuan, an increase of 8.83% year-on-year, indicating that China's wind turbine industry demand market is relatively strong.
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