Mine axial shaft fan of VP series has a rated capacity from 50 to 3300 m³, and a rated total pressure from 3500 to 8700 Pa for air density up to 1.2 kg/m³. It is designed for the mines main ventilation systems used in the mining industry and operated under atmospheric conditions with a temperature of transported air from 228 to 323 K, dust content up to 150 mg/m³ and relative humidity up to 98% (at 298 K (25 °C)) at a height above sea level up to 1000 m
Main electric drive
Hydraulic gear for blades turning
VP fan design
'VP' stands for Variable Pitch, i.e. adjusting the rotation angle of the impeller blade of the axial main ventilation fan.
U and T climatic categories of the fans, placement category 3, U and T climatic categories of the fans' electrical equipment, placement category 4 according to GOST 15150.
– Wide range of fan operating modes with a maximum efficiency of 88%
– The unique aerodynamic design provides high technical and cost-effective performance.
– Innovative mechanism that provides a smooth power transition from zero to maximum without stopping the fan.
– Can be used in other systems that provide air supply of the specified characteristics.
– Fans are suitable for use in both suction and discharge ventilation systems.
ADVANTAGES OF THE VP BLADES ADJUSTMENT
- Easy fan start-up in systems with initial pressure, with closed valve(s), parallel operation of several fans possible
– Aerodynamics optimization by simply changing the number of impeller blades and/or the blade profile (for low, medium, or high pressure)
– Rotation direction of the impeller in forward and reverse operation modes remains unchanged. Reverse mode is made possible by changing the blade rotation angle with the passage of the «zero point»
Example of the identification code of a mine axial shaft fan: impeller diameter is 3750 mm; impeller hub diameter is 2240 mm; high pressure rotation speed is 745 rpm; inlet box + impeller + straightener + diffuser + cowl of reverse design included; U climatic category; 3rd category version
VP-XX, X/YY, Y-Px-nn-Bz-x;
VP — variable pitch
XX, X — fan diameter (m / 10)
YY, Y – hub diameter (m / 10)
Px — pressure x = 1 — LPP_1 – blade profile, L – low pressure; x = 2 — MPP_1 – blade profile M – medium pressure; x = 3 — HPP_1 – blade profile H – high pressure;
nn – rotation speed, rpm
Bz – design type z = 3 — Impeller + straightener + hub diffuser (conical rear) z = 4 — Impeller + straightener + cowl z = 5 — Impeller + straightener + diffuser + conical rear (tunnel version) z = 9 — Inlet box + impeller + guide vane + diffuser + cowl (diffuser as per z = 4)
x – reverse design
х = 0 — Reverse design is not available x = 1 — Reverse design is available (min 60%)
VP series fans specifications
Fan specifications; VР-20,0/10,0-Р3-1485-В9; VР-22,4/11,2-Р3-1485-В9; VР-22,4/11,2-РЗ-990-В9; VР-25,0/12,5-РЗ-990-В9
Impeller diameter, mm;2000;2240;2240;2500
Impeller hub diameter, mm;1000;1120;1120;1250
Impeller blades;12;12;12;14
Rotor rotation speed, rpm, max;1485;1485;990;990
Rated capacity, m³/s;160;220;150;200
Rated total static pressure, Pa(±10%);6200;7750;3450;4300
Capacity within the operating envelope, m³/s;50...260;70...360;45...240;65...334
Total static pressure within the operating envelope, Pa (10%);3500...8500;4400...10660;200...4700;2400...59000
Total static efficiency, max;0,87/0,80;0,875/0,80;0,865/0,80;0,87/0,80
Power consumption at rated power, kW;1150;1950;600;1000
Installed power within the operating envelope, kW, max;2750;4750;1400;2450
Fan specifications; VР-28,0/14,0-РЗ-990-В9; VР-32,0/16,0-Р3-990-В9; VР-З6,0/18,0-Р3-990-В9; VР-36,0/18,0-РЗ-745-В9
Impeller diameter, mm;2800;3200;3600;3600
Impeller hub diameter, mm;1400;1600;1800;1800
Impeller blades;16;16;18;18
Rotor rotation speed, rpm, max;990;990;990;745
Rated capacity, m³/s;290;430;620;460
Rated total static pressure, Pa(±10%);5400;7000;8900;5000
Capacity within the operating envelope, m³/s;90...470;130...700;190...1000;140...750
Total static pressure within the operating envelope, Pa (10%);3000...7400;4000...9700;5000...12200;2800...6900
Total static efficiency, max;0,875/0,80;0,88/0,80;0,875/0,80;0,875/0,80
Power consumption at rated power, kW;1800;3400;6200;2600
Installed power within the operating envelope, kW, max;4350;8500;15250;6550
Fan specifications; VP-40,0/20,0-Р3-745-В9; VР-44,8/22,4-Р3-745-В9; VР-44,8/22,4-Р3-595-В9;VP-50,0/25,0-Р3-595-В9;
Impeller diameter, mm;4000;4480;4480;5000
Impeller hub diameter, mm;2000;2240;2240;2500
Impeller blades;20;20;20;20
Rotor rotation speed, rpm, max;745;745;595;595
Rated capacity, m³/s;635;890;710;990
Rated total static pressure, Pa(±10%);6200;7800;5000;6200
Capacity within the operating envelope, m³/s;3500...8500;270...1400;220...1150;300...1600
Total static pressure within the operating envelope, Pa (10%);3500...8500;4400...10700;2800...6800;3500...8500
Total static efficiency, max;0,87/0,80;0,87/0,79;0,865/0,78;0,86/0,78
Power consumption at rated power, kW;4500; 8000;4150;7150
Installed power within the operating envelope, kW, max;9800;9200;10000;17400
Fan specifications; VP-56,0/28,0-Р3-595-В9;VР-56,0/28,0-Р3-495-В9;VР-63,0/31,5-Р3-495-В9; VР-67,0/33,5-Р3-424-В9; VР-71,0/35,5-Р3-424-В9
Impeller diameter, mm;5600;5600;6300;6700;7100
Impeller hub diameter, mm;2800;2800;3150;3350;3550
Impeller blades;22;24;24;26;26
Rotor rotation speed, rpm, max;595;495;495;424;424
Rated capacity, m³/s;1390;1150;1650;1700;2000
Rated total static pressure, Pa(±10%);7800;5400;6800;5600;6400
Capacity within the operating envelope, m³/s;430...2250;350...1850;504...2700;520...2750;620...3300
Total static pressure within the operating envelope, Pa (10%);4400...10700;3000...7400;3900...9400;3200...7800;3600...8700
Total static efficiency, max;0,86/0,78;0,855/0,77;0,85/0,76;0,85/0,77;0,845/0,75
Power consumption at rated power, kW;12500;7300;13200;11200;15200
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