Full
Outline
Aiming at the problems of high failure rate caused by frequent operation of the 35 kV high-voltage circuit breaker in the LF refining furnace during the steelmaking process and the difficulty in determining the online status after offline maintenance, an offline detection device was developed. Adopting a modular design, the device integrates power supply, control, indication, and output modules. By simulating actual opening and closing scenarios, it achieves accurate detection of the circuit breaker's functions and contact status. After application, the device showed advantages such as low cost, simple operation, and strong adaptability, which could shorten the fault troubleshooting time by 58%, reduce the online failure rate after maintenance to 3.2% and save 3.86 million yuan in costs per year. Thus, the continuity and safety of steelmaking production were effectively ensured.
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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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