Full
Outline
The operating efficiency of pump station for circulating water system (the core link of cooling for rolling production line and equipment protection) directly affects rolling quality and energy consumption. In the paper, it is systematically elaborated the full process practices of establishing intelligent pump station through such technologies as integrated variable frequency speed control, closed-loop regulation of dynamic pressure, intelligent voice warning and long-distance monitoring by taking the transformation project of unmanned pump station in Long Products Plant of Baotou Steel as the object of study. The long-distance centralized control for status of pumping set and intelligent management of water balance are realized through innovatively replacing traditional power frequency drive pattern of asynchronous machine with frequency conversion control of rare earth permanent magnet synchronous motor combining with adaptive pressure regulation algorithm based on the rolling requirements in project. As a result, the electricity cost is saved by CNY 1.025 3 million Yuan annually, fluctuation range of pipe network pressure is reduced to ±0.08 MPa and investment recovery period is about 2.18 years.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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