Joint driving unit for sintering waste heat recovery and sintering main exhaust fan

[0022] In this embodiment, the above-mentioned sintering main exhaust fan 3 with dual output shafts is specifically a centrifugal blower; the above-mentioned sintering waste heat recovery steam turbine 1 is specifically a condensing steam turbine. The condensing steam turbine 1, the centrifugal blower 3 and the synchronous motor 4 are coaxially arranged in series, wherein the centrifugal blower 3 and the condensing steam turbine 1 are coaxially connected through the variable speed clutch 2. In order to ensure the stable operation of the unit, the The automatic meshing speed of the variable speed clutch 2 is 3000r / min, that is, after the centrifugal blower 3 is started, the variable speed clutch 2 is automatically meshed when the speed of the condensing steam turbine 1 rises to 3000r / min, and the centrifugal fan with the double output shaft is driven together with the motor 4. type blower 3, the output power of the motor 4 is reduced, so as to achieve the purpose of energy savin...

[0024] In this embodiment, the rotation speed of the sintering main exhaust fan 3 is 1500r / min. According to the parameters of the waste heat steam, when the rotation speed of the waste heat steam turbine is selected to be 3000r / min, it has a higher energy recovery efficiency. The speed ratio between the sintered waste heat turbine and the sintered main exhaust fan is 2.