Blowing machines of hot bleeding ГД and ДРГ

ГД-20 ДРГ-13,5У
ГД-20/500УФ ГМДРГ-15
ГД-25М ДРГ-19,5
ГД-26×2 ДРГ-19,5Ф
ГД-26×2-I ДРГ-22
ГД-31 ДРГ-25
ДРГ-26Ф ДРГ-29х2-I
ДРГ-29х2-II
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Smoke exhauster centrifugal single-sided ГД, ДРГ and double-sided (ГД-x2 and ДРГ-x2) suction is used to remove flue gases from solid fuel boilers in large industry (steel foundries, boilers and dryers). They move a large volume of air (temperature up to 400 ° C) and are relatively economical in electricity consumption, therefore it is preferred in the choice for many enterprises.

Exhauster hot exhaust and recirculation fans are designed for drying and fuel preparation, in flue gas recirculation systems in boiler units, in technological lines of metallurgical and other industries. There is no fundamental difference in them. Their impellers are made of heat-resistant steel. There is a system for cooling the chassis shaft. The maximum temperature of the medium at the inlet to the hot blast fans and the recirculation chimney must not exceed + 400 ° C. The exceptions are: ВГД-22SDRK – tmax = 250 ° C; ДРГ-19.5K, ДРГ-19.5FK – tmax = 420 ° C.

Specifications of blowing machines of HOT BLEEDING ГД and ДРГ

 
Size fan Capacity, m3/s Full pressure, Pa Maximum efficiency, not less, % Rotational speed, rpm Electric motor Weight without electro motor, kg
Size Power, kWt Rotational speed, rpm Voltage, V
ГД‑20 200 000 5 250 72 1 000 ДАЗО4‑450Х‑6У1 500 1 000 6 000 5 300
ДАЗО4‑450У‑6У1 630 1 000 6 000
2АДО‑630‑6000‑6У1 630 1 000 6 000
ГД‑20/500УФ 195 000 6 000 73 1 000 ДАЗО4‑450Х‑6У1 500 1 000 6 000 5 700
ДАЗО4‑450У‑6У1 630 1 000 6 000
2АДО‑630‑6000‑6У1 630 1 000 6 000
ГД‑25M 300 000 5 760 81 1 000 ДАЗО4‑450У‑6У1 630 1 000 6 000 5 970
ГД‑26×2 640 000 4 780 83 1 000 АОД‑1250‑6У1 1 250 1 000 6 000 31 100
ГД‑26×2‑I 640 000 4 389 83 1 000 АОД‑1250‑6У1 1 250 1 000 6 000 31 100
ГД‑31 263 600 2 690 84 600 2АДО‑1000/630-
6000‑8/10У1
1 600/630 750/600 6 000 12 400
330 000 4 220 750 2АДОТ‑800‑6000‑8У1 800 750 6 000
АДО‑1600/750У1 1 600 750 6 000

The characteristics are given in the mode of maximum efficiency for the moving medium with parameters: Bar=760 mm Hg. art. and t=400°C.

Dimensions and connection sizes of blowing machines of HOT BLEEDING ГД and ДРГ


Size machine ϕ Dimension, mm
h1 L1 L2 L4 D D1 D2 d d2 A a B b
ГД‑20 60° 1 750 780 780 890 2 000 1 400 1 500 19 19 2 997 950 3 430 1 215
75°÷165° 1 650 780 780 890
180°÷240° 1 450 780 780 890
270° 1 450 2 165 1 360 890
ϕ Dimension, mm N N2
H h h2 C E T1 T2 L3 L5 L6 L7
60°÷270° 3 050 1 400 545 1 170 748 1 290 870 890 372 850 975 24 16
ГД‑20/500УФ 45° 1 950 780 780 890 2 100 1 400 1 500 19 19 3 067 950 3 880 1 215
ϕ Dimension, mm N N2
H h h2 C E T1 T2 L3 L5 L6 L7
45° 3 370 1 400 770 1 170 748 1 290 870 890 427 920 1 090 24 16
ГД‑25М 60° 545 2 277 2 738 670 2 500 1 400 1 500 19 19 3 035 967 5 357 1 700
ϕ Dimension, mm N N2
H h h2 C E T1 T2 L3 L5 L6 L7
60° 4 255 2 000 545 1 400 800 1 500 900 670 508 850 975 24 16
ГД‑31 75° 700 2 840/
2 480
3 410/
3 050
760/
1 170
3 080 2 020 2 110 19 22 4 022 1 188 6 390 2 002
ϕ Dimension, mm N N2
H h h2 C E T1 T2 L3 L5 L6 L7
75° 4 596 2 156 830 1 539 1 148 1 673 1 280 760/
1 170
592/
797
1 300 1 150 24 24

Size machine ϕск‑ϕкв Dimension, mm
B1 B2 B3 B4 H2 H3 H4 L1 L1′ L2 L2′ L3 L3′ L4 L4′ A A1 b
ГД‑26×2
ГД‑26×2-I
45°-150° 2 600 2 370 1 650 700 700 2 070 1 160 2 350 460 280 715 -690 5 200 3 778 1 950
90°-135° 2 400 3 100 2 700 1 700 700 700 1 790 1 160 1 160 1 040 1 420 320 320 580 200
150°-150° 2 075 2 775 1 840 1 600 700 700 1 160 1 160 1 300 2 320 320 280 320 -660
270°-135° 3 245 2 400 2 700 1 700 700 700 1 100 1 160 660 1 040 1 670 320 320 580 200
ϕск‑ϕкв Dimension, mm N N2
B5 D d d2 C E C2 E2 T1 T2 T3 T4 H1 h h2 L5
1 300 2 600 22 22 1 820 1 930 3 900 1 300 1 950 2 058 4 020 1 410 980 1 800 2 780 420 26 40

 

Size machine ϕск‑ϕкв Dimension, mm
B1 B2 B3 B4 H2 H3 H4 L1 L1′ L2 L2′ L3 L3′ L4 L4′ A A1 b
ДРГ‑29×2‑I 45°-135° 3 160 2 100 2 980 2 100 700 700 2 540 2 660 1 160 1 470 460 320 655 75 5 200 3 850 2 215
60°-60° 2 250 4 360 2 250 2 580 700 700 2 240 1 160 2 660 1 470 320 460 75 655
ϕск‑ϕкв Dimension, mm N N2
B5 D d d2 C E C2 E2 T1 T2 T3 T4 H1 h h2 L5
1 350 2 900 22 22 2 300 1 900 3 900 1 300 2 440 2 016 4 020 1 410 830 1 950 2 850 550 36 40
ДРГ‑29×2‑II 60°-135° 3 060 4 360 2 980 2 080 700 700 2 240 1 160 1 160 810 1 470 320 320 660 4 900 3 850 2 215
ϕск‑ϕкв Dimension, mm N N2
B5 D d d2 C E C2 E2 T1 T2 T3 T4 H1 h h2 L5
60°-135° 1 300 2 900 22 22 2 300 1 900 3 900 1 300 2 440 2 016 4 020 1 410 980 1 950 2 550 420 36 40

 

Aerodynamic characteristics of blowing machines of HOT BLEEDING ГД and ДРГ

ГД-20

ГД-20

ГД-20/500УФ

ГД-25М

ГД-26×2

ГД-26×2-I

ГД-31

ДРГ-13,5

ДРГ-15

ДРГ-19,5

ДРГ-19,5Ф

ДРГ-22

ДРГ-25

ДРГ-26Ф

ДРГ-29×2-I

ДРГ-29×2-II

Aerodynamic characteristics of blowing machines of HOT BLEEDING ГД and ДРГ

Size fan Rotational speed, rpm Measuring area Values of sound power levels Lpi, dB in octave bands f, Hz LpA, dBА
125 250 500 1000 2000 4000 8000
ГД‑20 750 Discharge 120 118 115 119 116 111 107 123
Suction 115 113 110 115 111 106 103 118
Around the hull 108 108 109 108 106 101 98 113
ГД‑20/500УФ 1 000 Discharge 131 128 132 129 124 121 117 133
Suction 126 123 126 123 118 117 115 128
Around the hull 121 122 121 119 114 112 107 123
ГД‑26×2
ГД‑26×2‑I
1 000 Discharge 122 125 124 122 117 113 107 126
Suction 119 122 120 119 114 110 102 123
Around the hull 113 115 112 109 106 102 96 115
ГД‑31 750 Discharge 116 122 118 117 113 110 105 122
Suction 110 116 115 114 111 109 104 119
Around the hull 109 114 107 106 104 102 94 112

NOTE: Acoustic characteristics are given for conditions: the axial guide unit is fully open, Bar=760 mm Hg. art., the temperature of the moving medium t=400°C.