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Steam Turbine (Turbine with Air Cooling Unit)

The steam turbine is designed with an air cooling unit, and uses air to convey the heat generated during the steam condensing. This air cooled turbine features high efficiency and stable performance. Due to the higher back pressure, the enthalpy of the steam is lower than that in a water-cooled steam turbine. To keep the power same, we improved the design of the low pressure part for the power generation equipment. Comparing with a water-cooled turbine, the air-cooled steam turbine has several advantages including:
1. The water consumption is effectively lowered.

2. The specially designed blades at the end stage have a safe and highly efficient performance, and are suitable for steam flow of high pressure and wide variation range.

3. Three-dimensional flow design is adopted for the low-pressure stages of the air-cooled steam turbine. The through-flow comes with smooth channel, leading to a high efficiency.

4. Pedestal bearing is used as the rear bearing, thus the axial stability is improved.

5. The low pressure cylinder of the steam turbine sprays the water through a communicating pipe. Thus it effectively solved the overheat problem of the through-flow part in summer when the back pressure is usually very high.

6. The two stages before the last stage come with honeycomb seal for better dehumidifying performance and higher efficiency.

Technical Parameters of the Steam Turbine

NO. Model Rated/Max. Power
(MW)
Inlet Extraction Pressure
(MPa)
Speed
(r/min)
Exhaust Pressure
(Mpa)
Weight
(ton)
Overall Dimensions
(L×W×H, mm)
Pressure
(MPa)
Temperature
(℃)
1 C3-2.35/ 0.490 3/3.3 2.35 390 0.49   0.015 22.2 4268x2550 x2825
2 C6-3.43/ 0.490 6/6.6 3.43 435 0.49     22.2 4268x2560 x2830
3 C14-4.9/ 0.981 14 4.9 470 0.981     62 5150x4250 x3050
4 C15-3.43/ 0.785 15 3.43 435 0.785 3000 0.015 62 5150x4250 x3050
5 C15-4.9/ 0.981 15 4.9 435 0.981 3000 0.015 62 5150x4250 x3050
6 N3-2.35 3 2.35 390   5600   25.3 4230x2440 x1955
7 N2.5-3.43 2.5 3.43 435   5600   25 4440x2400 x1965
8 N6-2.35 6 2.35 390   3000   16.5 3750x3150 x2040
9 N6-3.43 6 3.43 435   3000   16.5 3750x2295 x2825
10 N7-3.43 7 3.43 435   3000   16.8 3730x3150 x2040
11 N12-3.43 12 3.43 435   3000   47 5500x3100 x3255
12 N15-3.43/435 15 4.9 470   3000 0.015 47 5500x3100 x3255
13 N15-4.9/ 470 15 4.9 470   3000 0.015 47 5500x3100 x3255
14 N18-3.43 18 3.43 435   3000      
15 N30-3.43/ 435 30 3.43 435   3000 0.015 60 6406x3810 x2865
16 N35-8.83 35 8.83 510   3000      
17 N50-8.83 50 8.83 535   3000      

Note: For more parameters, please contact us, Various custom geothermal steam turbines are also available according to your requirements.

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