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我厂二车间204号炉是3000仟伏安固定式矿热电炉,变压器是HSJ—3000/10型,采用自然冷却方式。这种变压器占地面积较大,冷却效果较差。为了减少占地面积,强化变压器冷却,在建设与安装过程中,把全部散热片拆除,改为强迫油循环冷却,增加了一个φ360×1400的冷却面积为11M~2油冷却器,选用3HA—9Z 离心清水泵代替油泵。这种泵是直接装在马达端部。结构比较紧凑,泵的扬程为32.6米,转速是2900转/分,流量45米~3/时,功率5.5瓩,压力25公斤/厘米~2,效率71.5%,电机型号 JO_2—51—2,功率7瓩。
I plant two workshops 204 furnace is 3000 thousand volt-ampere fixed ore thermal electric furnace, the transformer is HSJ-3000/10 type, the use of natural cooling. This transformer covers a larger area, the cooling effect is poor. In order to reduce the footprint and strengthen the transformer cooling, during the construction and installation, all the heat sinks were removed and forced to oil circulation cooling, an increase of a φ360 × 1400 cooling area of 11M ~ 2 oil cooler, the choice of 3HA- 9Z centrifugal pump instead of pump. This pump is mounted directly on the motor end. The structure is relatively compact, the pump head is 32.6 meters, speed is 2900 rev / min, flow 45 meters to 3 / hour, power 5.5 瓩, pressure 25 kg / cm ~ 2, efficiency 71.5% Power 7 瓩.