Research on High Temperature of Vacuum Pump

Vacuum pump high temperature problems have plagued the user, how to solve the vacuum pump high temperature, high temperature vacuum pump out there, how to change? With these problems, we conducted a high temperature vacuum pump research, the following is the study. Analysis of the causes of high temperature vacuum pump (1) motor power, operating current, resulting in high temperature vacuum pump. (2) fewer fan blades, resulting in a small amount of wind. (3) low speed fan, wind pressure, the amount of wind is small. (4) The voltage of the bus where the vacuum pump motor is located is 380V. Due to the voltage drop of the cable and the uneven distribution of the load, the actual voltage applied by the motor is only 365V, which causes the running current to be large due to the low voltage. (5) motor with dust, oil, reducing the cooling capacity, resulting in high temperature vacuum pump. Vacuum pump high temperature problems Countermeasures Motor power, speed and vacuum pump match, can not be changed. Fan mounted on the motor shaft, the motor speed determines the fan speed, it can not be replaced. Although increasing the number of fan blades can play a role, but the increase in the number of blades, the dynamic balance is not easy to find, such as finding is not good, will cause increased motor vibration. (1) The original vacuum pump fan cover extended 40cm, inside the installation of a fan with the same diameter axial fan, axial fan motor power 850W, speed 1489r / min, voltage 380V. The original fan to keep. Axial flow fan set up all the way to power control, axial fan and the main motor without a chain. After the start of the vacuum pump to start the axial fan operation in time, the vacuum pump outage 30min axial flow fan outage to enable the main motor to be fully cooled; (2) Regularly remove the dust on the vacuum pump motor to keep the motor heat sink clean to increase its cooling capacity; (3) The bus where the vacuum pump voltage is adjusted to 400V. High-temperature vacuum pump solution effect (1) As the axial fan speed, wind pressure air volume, cooling effect is greatly enhanced in the same ambient temperature and load current, the vacuum pump main motor temperature dropped 12 ℃. Summer main motor temperature no longer exceeded. (2) slow down the insulation aging of the main motor, extending its service life. (3) Axial fan can be artificially controlled, the main motor is out of service, the axial fan can still run, the main motor can be fully cooled. (4) After the voltage is adjusted, the operating current of the diaphragm pump is reduced to 210A, and the calorific value is relatively reduced. (5) Try to balance the load distribution of the 2-phase busbar to prevent over-voltage drop of some busbar due to overload. Through the study of the high temperature of the vacuum pump, we found that the high temperature of the vacuum pump is mainly caused by the heating of the motor, so the main solution is also around the vacuum pump motor.

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