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Baogang Stainless Steel Co., Ltd.

Hot-rolling water system (modification of long-shaft pump)

The objects of technology improvement are the water supply system of the indirect cooling pump of the hot-rolling system A and the water supply system of the laminar-flow bypass filter of the hot-rolling system B. The indirect cooling water supply system of the hot-rolling system A (clean circulating system) is mainly used for cooling of the hydraulic station, air-conditioner, etc., and equipped with four 400kW cooling pumps, three in service under normal conditions (two hydraulic coupling pumps). The water supply system of the laminar-flow bypass filter of the hot-rolling system B is used for cooling of the upper tower after water returning from the laminar-flow iron pit to the filter, and equipped with three 355kW cooling pumps, one in service under normal conditions. After system optimization and adjustment, four high-efficiency energy-saving pumps (three in service and one for standby) are used in the indirect cooling water system of the system A, and two high-efficiency energy-saving pumps (one in service and one for standby) in the water supply system of the laminar-flow bypass filter of the hot-rolling system B. The operating mode is unchanged in technology improvement of the two sets of systems. According to the acceptance results, 2,607,000KWH power can be saved annually.


System Name Power Consumption before Technology Improvement (kW) Power Consumption after Technology Improvement (kW) Power Saving Rate
Water supply system of indirect cooling pump of System A 341.8×3 267.58×3 21.7%
Water supply system of the laminar-flow bypass filter of System B 308.48 220.72 28.5%

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