Class Б.1: two-casing turbines with the high-pressure and low-pressure casings. The low-pressure casing features blade carrier design, in case the availability of extractions from the casing is required or cartridgeless in case there is no such need. The separate control stage is not executed. Steam distribution can be both nozzle and throttle based on the assumed operating conditions. The low-pressure casing is made to be straight flow. Steam flows in the high-pressure and low-pressure casings is opposite to compensate axial forces on the pad of thrust and radial bearing. Capacity range is from 60 to 190 MW, live steam pressure is from 8.8 to 14.7 MPa (90-150 kgf/cm2), last stage blade with the length from 550 to 940 mm (22-37 in) can be used. The turbine could be designed with both the radial exhaust to one water-cooled condenser and the axial exhaust to the air cooling condensing unit. The turbine features the possibility to organize single-stage or double-stage controlled heat extraction with a capacity from 100 to 190 Gcal/h, as well as control and uncontrolled industrial steam extraction with a capacity from 50 to 200 t/h.
|
Characteristics |
Values |
|
Main type of the turbine |
Cogeneration / condensing |
|
Basic design feature |
Two-casing with an opposite steam flow in casings |
|
Steam distribution type |
Throttle / nozzle |
|
Exhaust casing type |
Radial / axial |
|
Electricity output range, MW |
60-190 |
|
Main steam characteristics: |
|
|
- Pressure, MPa |
8.8-14.7 |
|
- Temperature, °С |
500-560 |
|
Capability of steam bleeding for heating: |
|
|
- Scheme |
Controlled steam bleeding; Single-stage/two-stage delivery water heating |
|
- Maximum heating load, Gcal/h |
100-190 |
|
- Steam extraction flow rate, t/h |
190-370 |
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Capability of steam bleeding for industrialuse: |
|
|
- Flow rate, t/h: |
50-200 t/h |
|
- Scheme |
Non-controlled/controlled steam bleeding |
|
- Guaranteed pressure, MPa |
0.8-2.1 |
|
Characteristics of the main condenser |
|
|
- Cooling water flow rate, m3/h |
8,000-13,500 |
|
- Heat exchange surface area, m2 |
3,100-6,000 |
|
Turbines of this class |
Т-95/105-8,8, ПТ-60-8,9/1,9, ПТ-60-8,8/1,3 |
