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Mill fans

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ВМ, ВМ-Дл, ВМ-I and ВВСМ types mill FD fans of single-side suction are designed for pulverized coal pneumatic transportation in pulverized-coal systems of the solid fuel fired boilers. Being of quite low capacity FD fans of this type generate high pressure. Besides they are subject to intensive abrasion effect of pulverized coal. To protect ВМ-Дл type FD fans from wearing, additional wear-preventive blades are installed. Impeller blades of ВМ-I type FD fans are protected with surfacing of wear-resistant alloy. Along with surfacing, design of ВВСМ type FD fans provides a possibility of worn-out blades replacement. Inner surface of ВМ-I type FD fan scroll case shell ring is covered with detachable low-carbon steel armor plates aimed at protecting from abrasive wear. For the same purpose armor plates made of chilled cast iron are harnessed in ВВСМ type FD fans.
ВМ-160/850-I
Nominal aerodynamic parameters, given as follows at ID fan inlet: Pressure – 101,300 Pa, Temperature – 100°С, Flue gas density – 0.946 kg/m³
Capacity, Q, thous. m³/h 160,0
Total pressure, Pv, Pa (kgf/m²) 8796 (897)
Maximum Efficiency, ηmax, % 72,0
General parameters
Frequency of rotation, n, rpm 1000
Weight (without electric motor), kg 7770
Electric motor parameters
Output, kWt 630, 1000
Frequency of rotation, rpm 1000
Voltage, V 6000
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