搅拌式风力致热装置启动性能研究

STUDY ON START-UP PERFORMANCE OF STIRRING WIND THERMAL DEVICE

搭建搅拌式风力致热试验台,以自制的2种致热器为研究对象,使其分别在3个不同平均角加速度24.92、14.66、8.04 rad/s2下启动。通过动态扭矩测试仪和数据采集仪测试记录致热器启动阶段的相关数据。结果表明:致热器启动时所需扭矩与角加速度的一次方、转速、叶片半径的二次方成正比,同时得出这些因素之间的关系式;满负荷时,启动扭矩会出现一个峰值,且角加速度越大峰值越大,自然风必须提供峰值以上的扭矩,否则装置无法启动。

A stirring wind-heating testing system was built. Two kinds of self-made heater were used as the research objects,and were started at the three different angular accelerations of 24.92,14.66,8.04 rad/s^2 respectively. using dynamic torque tester and data acquisition instrument,the relevant data of the start-up phase of the heater was recorded,with which,the start-up performance of the heater was studied. The test results show that the torque of each heater requirement is directly proportional to angular acceleration,and the square of the rotational speed and the blade radius in the start-up phase. At the same time,the relation formula between torque and these factors are obtained;in addition,under the conditions of the full load operation,the start-up torque will achieve a peak,also,the greater the angular acceleration is,the higher the peak is. The natural wind must provide more than the torque of peak value,otherwise,the heaters will not start.