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Multi-stage backpressure Turbine

     The multi-stage backpressure turbines are designed on building-block system and their passage-flow part is optimized, turbine consists of three main sections, each section has some dimensions.

        NG--maximum inlet steam conditions: 10MPa/480℃ maximum exhaust pressure: 2MPa

        HNG--maximum inlet steam conditions: 14Pa/540℃ maximum exhaust pressure: 2MPa

        HG--maximum inlet steam conditions: 14Pa/540℃ maximum exhaust pressure: 4.5MPa

        The turbine is axial flow, single shaft, reaction type, and has a reduction gearbox, when front section dimension exceed 50, turbine will connect with a generator directly.

        This series unit consists of a rotor and stator. The rotor is integral rotor. A governing stage is impulse blade and pressure state blades in the drum rotor are reaction blade cascade. The balance piston is provided on the rotor.

        The stator includes a outer casing(consists of a front section, middle section and exhaust section), steam chest(for NG and HNG type)or integral inner casing(for HG type) , guide blade support ring, labyrinth gland and bearing etc. A governing valve is connected with an actuator of speed regulation system via a mechanical lever.

        A governing system is full hydraulic and electric-hydraulic type, it consists of many standard assemblies; it provides the protection devices that have difference functions under the user requirements.

        The excellence of backpressure turbine is to take a high internal efficiency.

Type

Code

Rated output (KW)

Inlet conditions

Inlet steam flow
(t/h)
Exhaust Pressure

Rated speed
(r/min)

Steam rate
(kg/ kW.h)

Wei-ght
(t)
Outline dimen-sion

Arrange-ment

Re-marks

Pre-ssure
(MPa)

Tempe -rature
(℃)

Rated values
(Mpa)
Variable range 
(Mpa)
(L×H×Wmm)
B0.9-2.35/ 0.98 T6034 900 2.354 390 22.0 0.981   12080L
/3000R
23.4 4.4 2030×1780×1320 Double layer NG25/20/0
B1.0-3.23/ 1.67 T6030 1000 3.236 400 32.4 1.667   12111L
/3000R
30.6 4.4 2030×1780×1320 Double layer NG25/20/0
Driving the YK motor
B1.4-3.43/ 0.74 T6038 1400 3.432 435 18.0 0.736  

12080L
/1500R

12.5 4.4 2030×1780×1320 Double layer NG25/20/0
B1.5-2.35/ 0.49 T6073 1500 2.354 390 20.0 0.490   11091L
/3000R
13.0 4.4 2030×1780×1320 Double layer NG25/20/0
B1.5-3.43/ 0.78 T6164 1500 3.432 435 22.54 0.785   11091L
/3000R
13.05 4.4 2030×1780×1320 Double layer NG25/20/0
B2.5-3.43/ 0.98 T6019 2500 3.432 435 35.0 0.981   9732L
/3000R
13.64 6.8 2460×1880×1920 Double layer NG32/25/0
B2.8-3.43/ 0.78 T6119 2800 3.432 435 35.0 0.785   9568L
/3000R
12.35 6.8 2460×1880×1920 Double layer NG32/25/0
B3-3.43/ 0.93 T6031 3000 3.432 435 43.6 0.932   9732L
/3000R
14.10 6.8 2460×1880×1920 Double layer NG32/25/0
B3-3.43/ 0.54 T6033 3000 3.432 435 32.4 0.539   9732L
/3000R
10.20 6.8 2460×1880×1920 Double layer NG32/25/0
B3.2-3.43/ 0.93 T6040 3200 3.432 435 47.3 0.932   9732L
/3000R
14.18 6.8 2460×1880×1920 Double layer NG32/25/0
B3-3.43/ 0.49 T6048 3000 3.432 435 30.0 0.490   9732L
/3000R
9.63 6.8 2460×1880×1920 Double layer NG32/25/0
B3-3.43/ 0.98 T6049 3000 3.432 435 45.0 0.981   9732L
/3000R
14.41 6.8 2460×1880×1920 Double layer NG32/25/0
B3-2.35/ 0.29 T6054 3000 2.354 375 30.42 0.294   9732L
/3000R
10.41 6.8 2460×1880×1920 Double layer NG32/25/0
B3-3.43/ 0.78 T6068 3000 3.432 435 37.80 0.785   9568L
/3000R
12.22 6.8 2460×1880×1920 Double layer NG32/25/0
B3-2.35/ 0.29 T6180 3000 2.354 390 30.4 0.294 0.26~ 0.39 9732R
/3000R
10.13 6.8 2460×1880×1920 Double layer NG32/25/0
B3-2.35/ 0.49 T6071 3000 2.354 390 38.0 0.490 0.39~ 0.59 9568L
/3000R
12.67 6.8 2460×1880×1920 Double layer NG32/25/0
B3-3.5/ 0.4 T6237 3000 3.50 435 27.7 0.40 0.3~ 0.6 9568L
/3000R
9.23 6.8 2460×1880×1920 Double layer NG32/25/0
B3-3.43/ 0.49 T6152 3000 3.432 435 30.0 0.49 0.39~ 0.59 9568L
/3000R
9.78 6.8 2460×1880×1920 Double layer NG32/25/0
B3-3.43/ 0.59 T6070 3000 3.432 435 32.0 0.588 0.49~ 0.69 9568L
/3000R
10.36 6.8 2460×1880×1920 Double layer NG32/25/0
B3-3.43/ 0.98 T6197 3000 3.432 435 44.3 0.981 0.78~ 1.18 9568L
/3000R
14.76 6.8 2460×1880×1920 Double layer NG32/25/0
B3-4.9/ 0.78 T6225 3000 4.903 435 32.40 0.785 0.59~ 0.88 11583L
/3000R
10.80 4.4 2030×1780×1320 Single layer NG25/20/0
B3-4.9/ 0.78 T6217 3000 4.903 435 32.40 0.785 0.59~ 0.98 11583L
/3000R
10.80 4.4 2030×1780×1320 Double layer NG25/20/0
B3-4.9/ 0.78 T6224 3000 4.903 435 33.50 0.785 0.59~ 0.88 11583L
/3000R
11.04 4.8 2160×1780×1320 Single layer NG25/20
/12.5
*1
B4-4.9/ 0.69 T6223 4000 4.903 435 42.0 0.69 0.49~ 0.88 9568L
/3000R
10.30 4.4 2030×1780×1320 Single layer NG25/20/0
B6-4.9/ 0.69 T6253 6000 4.90 470 55.0 0.686 0.5~ 0.9 7683L
/3000R
9.17 6.8 2460×1880×1920 Double layer NG32/25/0
B6-4.9/ 0.98 T6244 6000 4.903 435 68.4 0.981 0.78~ 1.27 7683L
/3000R
11.20 6.8 2460×1880×1920 Double layer NG32/25/0
B6-4.9/ 1.27 T6246 6000 4.903 470 75.0 1.27 0.88~ 1.37 7683L
/3000R
12.50 6.8 2460×1880×1920 Double layer NG32/25/0
B6-9.31/ 1.47 T6234 6000 9.31 495 60.0 1.47 1.27~ 1.67 9364L
/3000R
10.00 8.2 2630×1880×1920 Double layer NG32/25/32
*2
B12-4.9/ 0.98 T6251 12000 4.903 435 138.0 0.981 0.78~ 1.18 3000R 11.50 24 3550×3100×3000 Double layer NG50/40/25
B3.1-12.16/ 4.33 T6150 3100 12.61 510 57.5 4.33 4.14~ 4.80 10958L
/1500R
18.44 6.5 2050×2200×1730 Double layer HG25/16/8
B6-8.83/ 3.63 T6045 6000 8.826 530 115.0 3.629 3.43~ 3.83 9514L
/3000R
19.16 6.5 2375×2880×2150 Double layer HG32/20/10
B5-2.35/ 0.23 T6255 5000 2.354 350 48.6 0.235 0.26~ 0.214 6397L
/1500R
9.69 12.5 2870×3500×2500 Double layer NG40/32/0
B4-4.9/ 0.78 T6264 4000 4.9 435 42.9 0.78 0.98~ 0.588 9568L
/3000R
10.71 4.4 2030×1780×1320 Double layer NG25/20/0
B12-8.83/ 3.64 T6277 12000 8.83 535 224.4 3.64 3.79~ 3.35 3000R 18.20 38.8 3710×5070×3320 Double layer HG50/32/32
B2-2.16/ 0.24 T6279 2000 2.16 315 22.90 0.245 0.25~ 0.24 10550L
/1500R
11.33 6.8 2460×1880×1920 Double layer NG32/2



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