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Test running requirement and Operation condition of centrifugal Fan in Power Station

Mar 27, 2019

The centrifugal fan in power station is mainly composed of air inlet, air valve, impeller, motor and outlet. In different conditions, the effect of centrifugal fan is not the same. Therefore, different parts of the operation are not uniform, the effect of centrifugal fan will be affected. The centrifugal fan debugging to the best condition, can start from a number of aspects.

The centrifugal fan of the power station is generally used to allow full-pressure starting or step-down electric power, but it should be noted that the current of the full-pressure starting is about 5-7 times of rated current, and the voltage-reducing starting torque is directly proportional to the voltage square. When the capacity of the power grid is insufficient, the step-down starting shall be adopted.

When the centrifugal fan of the power station is tested, it is necessary to read its operating instructions carefully and check the wiring method of the centrifugal fan in accordance with the wiring diagram effectively. It is necessary to check carefully whether the working voltage of the fan power supply meets the requirements, whether the power supply is phase-deficient or in-phase, and whether the capacity of the electrical components is in conformity with the requirements.

There are no less than two people in the test run, one person controls the power supply, one person observes the operation of the fan, and finds out the abnormal phenomena immediately stop checking; first, check whether the rotation direction is correct or not; After the centrifugal fan starts operation, it should check whether the current of each phase is balanced and the current exceeds the rated current immediately. If there is any abnormal phenomenon, it should stop and check. After 5 minutes of operation, stop and check fan for abnormal phenomenon, confirm no abnormal phenomenon and start operation again.www.jnblower.com