In recent years, the domestic industry is in a period of rapid development, the improvement of all aspects of life, the generator is still more widely popular in foreign countries, because it is relatively small and convenient, as an emergency generator, so do you know what the performance advantages of the generator are? What are the applications? Below we will “generator rental personnel explain the performance characteristics and scope of application” to understand in detail.
The performance requirements of silicon steel for generator are introduced.
Silicon steel is an important soft magnetic alloy. The silicon steel used in the generator field is mainly full-process electrical steel with a thickness of 0.50mm. Some thermal power units use silicon steel with a thickness of 0.35mm or oriented silicon steel, which is mainly used for stator punching in the generator. Due to the complex structure of the generator and the mixed distribution of the magnetic circuit in multiple directions, the generator industry has high requirements on the quality of silicon steel, specifically as follows:
1. The whole process silicon steel sheet.
Due to the huge volume of the current generator set (such as the Three Gorges stator diameter of more than 20m), the stacking process requires special requirements (such as site stacking, etc.), so that the stator is impossible to annealing treatment, the use of full process silicon steel.
2.The plate size requirements are high.
Such as 300, 600, 1000MW turbogenerator stator core superposition length of 5100, 6731, 8150mm. Such a length of stator size, more than ten thousand pieces of laminated thickness, the longitudinal and transverse silicon steel sheet with the same plate difference requirements are very strict.
3. High requirements for electromagnetic performance.
Due to the requirements of high efficiency design of generator, the lower the loss of silicon steel sheet should be the better, the lower the loss, the higher the efficiency of the unit. The efficiency of 300 and 600MW turbogenerator should be more than 98%, the efficiency of hydrogenerator should also be more than 98%, and some small generators should also reach 96%, so the requirements of high magnetic sensitivity, high permeability, small magnetic aging effect, mechanical characteristics require good fatigue resistance and low stress sensitivity.
4. Good insulation performance.
In the supply of silicon steel products in the field of generator, some of the main manufacturers of high-grade silicon steel in China use special insulating coatings according to the performance requirements of generators. The silicon steel products supplied by TISCO to domestic and foreign generator enterprises usually adopt C5 or C6 coating. The silicon steel products supplied by Baosteel generator industry mainly adopt H coating (thick coating) and self-bonding coating; The silicon steel products supplied by WISCO to the generator industry mostly adopt T4 coating or T5 coating.
The interlayer resistance of insulating coating on silicon steel for large-scale generators can reach more than 10000Ω.mm2 / piece. When using silicon steel, generator manufacturers often use secondary coating, which is usually made of C6 water-soluble paint or organic paint.
In short, because of the special performance requirements of generators, there are very high requirements for high grade unoriented silicon steel in the aspects of homogeneity, electromagnetic properties and coating properties.
Jiangsu Meao Power Technology Co., Ltd. is an important manufacturer of diesel generators. The company mainly manufactures and sells diesel generator sets with power of 3-3000kW, mobile power station of 24-600kW, Marine emergency diesel generator set of 24-800kW, gas generator set, heavy oil generator set and all kinds of imported series, special series (trailer, static speaker, mobile lighthouse, container, etc.) diesel generator At the same time, we are engaged in generator set maintenance and after-sale service of generator set accessories.
