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武钢三烧二系烧结机配置2台YDA—CH—16~#型抽风机,配用MCYC三相交流绕线型电机,额定功率2500千瓦,额定电压10000伏,该电机由日本进口。该电机自1973年三烧三系建成投产以来,其冷却方式一直为自冷密闭循环通风,电机产生的热量,通过空冷器交换由冷却水带走。由于武钢使用的是生产水,夏季供水温度高达36～38℃,水质差,空冷器易结垢,并发生局部堵塞,使空冷器传热系数降低和水流量减小,电机运行温度升高,严重威胁生产。如在1984年的高温季节(7、8、9月份)里,因电机运行温度高达110℃,被迫关闭风门,影响烧结机运行达38小时。后来被迫打开端部罩门,吸入室内空气,以维持生产。这种临时措施使电机温度有所降低,但会造成电机内部积灰严重。
Wuhan Iron and Steel three burning two series sintering machine configuration 2 YDA-CH-16 ~ # type exhaust fan, equipped with MCYC three-phase AC winding motor, rated power 2500 kW, rated voltage 10000 volts, the motor imported from Japan. The motor has been put into operation since 1973 when the three-firing system was put into operation. The cooling mode has been self-cooled and closed circulation ventilation, and the heat generated by the motor is taken away by the cooling water through the exchange of the air cooler. As Wuhan Iron and Steel is the production of water, the summer water temperature as high as 36 ~ 38 ℃, poor water quality, air coolers scaling, and the partial blockage, the air cooler heat transfer coefficient decreases and water flow decreases, the motor operating temperature, Serious threat to production. For example, during the hot season of 1984 (July, August and September), the shut-off of the damper was hindered by the motor operating temperature up to 110 ° C, affecting the operation of the sintering machine for 38 hours. Later forced to open the end of the hood, inhalation of indoor air to maintain production. This temporary measure reduces the temperature of the motor, but causes serious build-up of dust inside the motor.