Now the anchor book is registered and contains æ´š 蕹 蕹 è¡èˆ³ è¡èˆ³ è¡èˆ³ 室 室 室 室 室 室 室 室 室 室Closed book, 13 渖 渖 莒, painting and practicing 7 斛渖 斛渖 æ´š æ´š æ´š æ´š æ´š æ´š 准 准 准 准 准 准 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 2é’æ¼å…´,3关撂钸å…æ’‚é’¸å…1+Panzhe seat winter plate Nanxun, 戕2 two materials for the generator winding insulation structure under the action of temperature, the electrical properties of the machine maple will gradually change Bad, and when the temperature rises to a certain extent, the properties of the insulating material will change substantially. In the end, even the insulation capacity is lost. Therefore, in order to obtain an economical service life, the stator and rotor coil insulation of the motor adopts grade insulation, thereby improving the insulation level of the whole motor and prolonging the service life of the motor.
The ratio of the turnover speed reaches 1.55 times. The water wheel hair dryer with such high speed is used for the high speed of the corpse. The rotor structure machine is not required to be high. To meet this requirement, the rotor is set to meet the requirements of high speed mechanical strength. To improve the characteristics of the hydro-generator, the rotor is solidified by a solid magnetic pole rotor rotor magnetic yoke. The poles are machined. The bolts made of high-strength alloy structural steel are used to fix the pole pieces to the pole body. 2 The rotor is allowed to have sufficient strength and rigidity requirements. The motor runs at a speed of 1 2 per unit of coil per unit centrifugal force. The lateral component, the width b of the flat copper wire, the length of the flat copper wire, and the stress of the cross section of the coil 5 when the friction between the turns is not considered, the solid magnetic pole has a good damping effect, and the harmonic of any number of teeth is The ratio of the quadrilateral super-transient reactance and the shaft super-transient anti-rotation that is usually required to suppress the design of the crucible is 1.151.35, and the solid magnetic pole is compared with the stacked magnetic pole provided with the damper winding. The super-transient reactance values ​​of the axes are similar to each other. When the solid magnetic poles are connected to each other, the cross-axis damping effects of the two are similar. And when there is no connection between the poles. The cross-axis damping effect of the solid magnetic pole is slightly worse.
3 pole coil strength check calculation The magnetic pole coil is wound by flat copper wire. The flat magnetic pole line is very necessary for the calculation of the strength of the high-speed hydro-generator. The centrifugal force coefficient of the motor is the allowable stress. The tensile strength limit of the copper wire is calculated repeatedly at the rated speed, 6=5, 2 at the runaway speed 5=458. It can be seen from the above formula that the linear stress of the motor is less than the allowable stress is safe and reliable. The hydro-generator exceeds the allowable stress of 61.12, and the buckle is added to the block. The number of the mountain is found because the pole piece and the coil are fixed on the pole by the high-strength bolt, so the number of bolts and the bolt tensile stress should be taken. When a strong rated speed is used, A=.2Y51 is the speed of the AfA, and the C degree gauge is worn by the bolt. The method is the number of bolts F. The minimum sectional area of ​​the bolt. The allowable stress of the bolt. When applying this equation, the following points should be screwed into the bolt. The nominal diameter of the bolt is 25 times deeper; when the number of bolts per pole is 2, or when high-strength materials are used, the pre-nuclear stress of the snail should be measured, so that the weight of the bolt is evenly distributed and guaranteed to be greater than the working test. Performance parameter The hydro-generator designed by Muji has been put into use in the station, and there is no abnormality in mechanical strength and electrical performance. Also stable project test value design value straight-axis synchronous reactance know value value cross-axis synchronous reactance standard value straight-axis super-transient electric impedance standard value cross-axis super-transient electric resistance standard value short-circuit ratio full load excitation current A no-load Excitation current A moment of inertia kg armature winding temperature rise excitation winding temperature rise armature winding DC resistance 7夂 0 excitation winding DC resistance 7 inflammation armature winding loss W excitation winding loss W core loss W mechanical loss W stray loss W 1 Chen Shikun. Motor design. Mechanical Industry Press, 1984.
2 white Yannian. Hydrogenerator design and calculation. Machinery Industry Press, the expansion of the export of mechanical and electrical products should pay attention to the aspects of the statistics of the results of the statistics published by the Ministry of Foreign Trade and Industry, and the market share of the mechanical and electrical products is 2.3. China's mechanical and electrical products have reached 5.3 billion US dollars, accounting for 42. It can be predicted that the export of China's mechanical and electrical products will continue to maintain rapid growth in the 21st century, and gradually increase the proportion of exports of mechanical and electrical products. At present, the main constraints faced by China in expanding the export of mechanical and electrical products are the following factors, and the implementation of the market diversification strategy has been delayed. The reason is that in addition to the relatively stable and standardized market in the developed countries, most of the developing countries' electromechanical products market has yet to be developed. The development of ten and market potentials remains to be seen. High-tech mechanical and electrical products account for the entire mechanical and electrical products. The proportion of exports is low. Due to the lack of Muzi brand-name electromechanical products with independent intellectual property rights, China's electromechanical industry ranks sixth in the world in terms of production scale, but it has not been able to fully exert its export potential. The world ranking is only 15th; it is developed countries and In some developing countries, Flash has frequently initiated anti-dumping and anti-subsidy lawsuits. Developed countries may set up technical trade barriers in terms of energy pollution and safety compatibility of noise pollution, which will bring new wheel resistance to China’s expansion of mechanical and electrical products. Should have a clear understanding, early adjustment
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