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Back Pressure Electric Turbines

Back Pressure Electric Turbines

Details This type of turbines has compact structure, which is easy to operate and maintain, with good safety performance. The speed control system adopts electronic or electro-hydraulic controls, with low diversity factor of stability regulating speed. If electro-hydraulic control is used, it is...

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    Details

    This type of turbines has compact structure, which is easy to operate and maintain, with good safety performance. The speed control system adopts electronic or electro-hydraulic controls, with low diversity factor of stability regulating speed. If electro-hydraulic control is used, it is possible to realize zero-difference regulation, which is convenient for realizing joint control with DCS. The products are extensively used in the petrochemical, thermal power, iron and steel, paper, cement and other industries.


    A Electric Turbine with an exhaust pressure greater than atmospheric pressure is referred to as a back pressure turbine. The exhaust steam can be used to supply heat or supply the original medium and low pressure steam turbines to replace the medium and low pressure boilers of the old power plant. When the back pressure steam turbine is used to supply the original medium and low pressure steam turbines to replace the medium and low pressure boilers of the old power plant, it is also called the front-mounted steam turbine, which not only increases the power generation capacity of the original power plant, but also improves the original power plant. Thermal economy. The design value of the exhaust pressure of the back pressure steam turbine for heating depends on the heating purpose; the back pressure of the front turbine is often greater than 5 MPa, depending on the steam parameters of the original unit. The exhaust steam is condensed into water after being used in the heating system, and then sent back to the boiler as feed water by the water pump. The condensate of the general heating system cannot be completely recovered, and the feed water needs to be replenished. 


    Operating principle

    The electric power generated by the back-pressure turbine generator set is determined by the heat load, and thus cannot meet the needs of heat and electric load at the same time. The back pressure type steam turbine is generally not installed in a separate unit, but is operated in parallel with other condensing steam turbines. The condensing steam turbine is responsible for the variation of the electric load to meet the external demand for electric load. The electric power of the front-mounted steam turbine is determined by the amount of steam required by the medium and low-pressure steam turbines. The regulator is used to control the amount of steam entering to maintain its exhaust pressure; the low-pressure unit adjusts the amount of steam entering according to the load demand, thereby changing the amount of steam exhausted by the front turbine. Therefore, the front steam turbine cannot be directly controlled according to the magnitude of the electric load.


    Model

    Type

    Inlet Pressure
    (Mpa)

    Inlet Temperature
    (℃)

    Outlet Pressure
    (Mpa)

    Power
    (kW)

    B0.75-1.27/0.15

    STF624

    1.27

    330

    0.15

    750

    B1.0-1.27/0.15

    STF624

    1.27

    330

    0.15

    1000

    B0.75-1.27/0.3

    STF624

    1.27

    330

    0.3

    750

    B0.9-1.27/0.3

    STF624

    1.27

    330

    0.3

    900

    B0.5-1.27/0.5

    STF624

    1.27

    330

    0.3

    500

    B0.75-2.34/0.15

    STF624

    2.34

    390

    0.15

    750

    B1.0-2.34/0.15

    STF624

    2.34

    390

    0.15

    1000

    B1.5-2.34/0.15

    STF624

    2.34

    390

    0.15

    1500

    B0.75-2.34/0.3

    STF624

    2.34

    390

    0.3

    750

    B1.0-2.34/0.3

    STF624

    2.34

    390

    0.3

    1000

    B1.5-2.34/0.3

    STF624

    2.34

    390

    0.3

    1500

    B0.75-2.34/0.5

    STF624

    2.34

    390

    0.5

    750

    B1.0-2.34/0.5

    STF624

    2.34

    390

    0.5

    1000

    B1.5-2.34/0.5

    STF624

    2.34

    390

    0.5

    1500

    B0.5-2.34/0.8

    STF624

    2.34

    390

    0.8

    500

    B0.75-2.34/0.8

    STF624

    2.34

    390

    0.8

    750

    B1.0-2.34/0.8

    STF624

    2.34

    390

    0.8

    1000

    B1.5-2.34/0.8

    STF624

    2.34

    390

    0.8

    1500

    B0.5-2.34/1.0

    STF624

    2.34

    390

    1

    500

    B0.75-2.34/1.0

    STF624

    2.34

    390

    1

    750

    B1.0-2.34/1.0

    STF624

    2.34

    390

    1

    1000

    B1.2-2.34/1.0

    STF624

    2.34

    390

    1

    1200

    B0.5-2.34/1.37

    STF624

    2.34

    390

    1.37

    500

    B0.6-2.34/1.37

    STF624

    2.34

    390

    1.37

    600

    B0.75-3.43/0.3

    STF624

    3.43

    435

    0.3

    750

    B1.0-3.43/0.3

    STF624

    3.43

    435

    0.3

    1000

    B1.5-3.43/0.3

    STF624

    3.43

    435

    0.3

    1500

    B0.75-3.43/0.5

    STF624

    3.43

    435

    0.5

    750

    B1.0-3.43/0.5

    STF624

    3.43

    435

    0.5

    1000

    B1.5-3.43/0.5

    STF624

    3.43

    435

    0.5

    1500

    B0.5-3.43/0.8

    STF624

    3.43

    435

    0.8

    500

    B0.75-3.43/0.8

    STF624

    3.43

    435

    0.8

    750

    B1.0-3.43/0.8

    STF624

    3.43

    435

    0.8

    1000

    B1.5-3.43/0.8

    STF624

    3.43

    435

    0.8

    1500

    B0.5-3.43/1.0

    STF624

    3.43

    435

    1

    500

    B0.75-3.43/1.0

    STF624

    3.43

    435

    1

    750

    B1.0-3.43/1.0

    STF624

    3.43

    435

    1

    1000

    B1.5-3.43/1.0

    STF624

    3.43

    435

    1

    1500

    B0.5-3.43/1.37

    STF624

    3.43

    435

    1.37

    500

    B0.75-3.43/1.37

    STF624

    3.43

    435

    1.37

    750

    B1.0-3.43/1.37

    STF624

    3.43

    435

    1.37

    1000

    B1.5-3.43/1.37

    STF624

    3.43

    435

    1.37

    1500

    B0.5-3.43/1.6

    STF624

    3.43

    435

    1.6

    500

    B0.75-3.43/1.6

    STF624

    3.43

    435

    1.6

    750

    B1.0-3.43/1.6

    STF624

    3.43

    435

    1.6

    1000

    B1.5-3.43/1.6

    STF624

    3.43

    435

    1.6

    1500


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