Recently, in a water supply pump renovation project of Wuhan Iron and Steel Group Mining Co., Ltd., Qirod Electric successfully applied several 110KW frequency converters to the project site, which greatly reduced the maintenance workload of the equipment, and at the same time made the water supply more accurate and energy-saving. Contribute to further improving the automation level of customers' equipment and reducing the production cost of enterprises.

Wuhan Iron and Steel Group Mining Co., Ltd. is a wholly-owned subsidiary of WISCO with an independent legal person system and mainly focuses on ore mining. It is the largest wholly-owned subsidiary and an important raw material base of WISCO. There are four subordinate iron mines: Daye Iron Mine, Chengchao Iron Mine, Jinshandian Iron Mine and Lingxiang Iron Mine; Wulongquan Limestone Mine, Jiaozuo Clay Mine, two auxiliary mines, mine construction company, mining machinery manufacturing plant and other units .

The traditional adjustment methods of feed pumps include throttling adjustment, return adjustment, etc., while frequency conversion adjustment is an efficient and energy-saving adjustment method. The frequency conversion transformation of high-power machinery such as feed pumps is a very effective way for iron and steel plants to achieve energy saving and emission reduction. way. Several pumps in this renovation have been adjusted by frequency conversion, and the valve openings are adjusted to 95%. The start, stop and frequency adjustment of the frequency converter are all regulated by the DCS system in the centralized control room. The system runs stably and reliably. The operation is simple and the motor starts to achieve "soft start", which reduces the impact of frequent motor starting on the power grid, and at the same time, the water supply pressure realizes closed-loop adjustment, avoiding the energy loss of the original throttling adjustment, and the energy saving effect is very obvious.