论文部分内容阅读
轴流式岗位通风机是上海港各装卸作业区主要的通风降温设备,广泛地用于船舱、堆场、仓库、车间等处,总数达500多台。每年的使用期一般为三个月左右。目前各港区所使用的轴流风机存在着不少缺点,主要表现在: 1.上海港各港区使用的轴流风机均为上海县社办厂生产。风叶外径为600毫米,风机用2.8千瓦二极电机驱动。由于该风机是按五十年代图纸生产的,因此风机选型不当,流量、全压的富裕量过大,造成风机工作的实际工况点偏离设计工况点。而且部分风机电机的输出功率在3千瓦以上,既影响电机寿命,又浪费能源。
Axial flow station ventilator is the main ventilation and cooling equipment in the loading and unloading area of Shanghai Port. It is widely used in cabins, storage yards, warehouses and workshops, with a total number of over 500 units. The annual service period is generally about three months. At present, there are many shortcomings of the axial fan used in each port area. The main features are as follows: 1. The axial fans used in the port area of Shanghai Port are all produced by the Shanghai Municipal People’s Government. Blade diameter of 600 mm, the fan with 2.8 kilowatts of bipolar motor drive. Because the fan is produced according to the drawings of the 1950s, the fan selection is not appropriate, and the richness of the flow and the total pressure is too large, causing the actual operating conditions of the fan to deviate from the design conditions. And some fan motor output power of 3 kilowatts or more, both affect the motor life, but also a waste of energy.