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Back pressure turbine

        This  type is a single casing, impulse type turbine, with a reduction gearbox.

        The turbine uses a full hydraulic governing system and provides the protection devices that have difference functions, also the electrical governing system is provided in accordance with the customer. The table lists some multi-stage backpressure turbines that are developed later.

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)
B0.75-2.35/0.29 H254(1) 750 2.354 390 10.6 0.294 0.2-0.39 6500L
/1500R
14.1 7 2890×1920×1900 Double layer 1C62 type
B1.0-2.35/0.29 H254(1) 1000 2.354 390 14 0.294 0.2-0.39 6500L
/1500R
14 7 2890×1920×1900 Double layer 1C62 type
B0.75-1.27/0.29 H258(2) 750 1.275 340 16.2 0.294 0.2-0.39 6500L
/1500R
21.5 7 2890×1920×1900 Double layer 1C62 type
B1.5-2.35/0.29 H255(3) 1500 2.354 390 20 0.294 0.2-0.39 6500L
/1500R
13.5 7 2890×1920×1900 Double layer 1C62 type
B1.5-2.35/0.49 H259(2) 1000 2.354 390 26.25 0.49 0.39-0.69 6500L
/1500R
17.5 7 2890×1920×1900 Double layer 1C62 type
B1.5-3.43/0.49 H257(2) 1500 3.432 435 20 0.49 0.39-0.69 6500L
/1500R
13.5 7 2890×1920×1900 Double layer 1C62 type
B1.0-2.35/0.58 H260(1) 1000 2.354 390 19.5 0.588 0.49-0.69 6500L
/1500R
19.5 7 2890×1920×1900 Double layer 1C62型
B3-2.35/0.29 T3306 3000 2.354 390 31.5 0.294 0.2-0.39 5600L
/3000R
14 9 3300×2300×2060 Double layer  
B3-3.43/0.29 T3308 3000 3.432 435 27 0.294   5600L
/3000R
9     Double layer  
B3-3.43/0.49 T3307 3000 3.432 435 32 0.49 0.35-0.69 5600L
/3000R
10.67 9 3300×2300×2060 Double layer  
B6-3.43/0.49 T4301 6000 3.432 435               Double layer  
B1.0-2.35/0.78 H254(3) 1000 2.354 390   0.78   6500L
/1500R
         

Note: R—CW, view the generator from the turbine. L—CCW, view the generator from the turbine.



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