What is the operating principle of a Turbo Pump?

The vertical type is smaller than the horizontal type. If foreign objects fall into the pump, turbine blades are easily damaged and difficult to repair. Its stability is slightly weaker and it is more prone to vibration. However, its advantages include directly replacing diffusion pumps and vacuum gauges, being cheaper than the horizontal type, more flexible when connected to vacuum systems, and magnetic bearing turbo pumps are less threatened by oil contamination.

What causes imbalance in a Turbo Pump?

For turbo pumps with magnetic bearings, vibration levels are relatively small, so spectrum analysis is required for comparison. In addition, the core issue of magnetic bearing systems is dynamic balance. For example, if the rotational frequency is relatively high, it indicates imbalance. We use portable inspection and analysis instruments to ensure pump quality and perform predictive maintenance to avoid unexpected shutdowns.

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Phenomenon of Turbo Pump Imbalance?

Monitoring Results ｜ Phenomenon of Turbo Pump Imbalance?

For turbo pumps with magnetic bearings, the most critical issue is dynamic balance. If the rotational frequency is relatively high, it indicates poor balance. How should this be measured?

Operating Principle of Turbo Pump

A turbo pump uses high-speed rotating blades to transfer kinetic energy to gas molecules, generating a directional flow to evacuate gas. The moving and stationary blades are alternately arranged, with opposite inclination directions, and are composed of more than ten pairs of blades.

Turbo pumps can be divided into two main types by appearance: Vertical type and Horizontal type. The vertical type is smaller in size compared to the horizontal type, but if foreign objects fall into the pump, the turbine blades are easily damaged and difficult to repair. Its stability is relatively weaker, making it more prone to vibration problems. However, its advantages include directly replacing diffusion pumps and vacuum gauges, being cheaper than the horizontal type, and offering more flexibility when connecting with vacuum systems. Moreover, magnetic bearing turbo pumps are less threatened by oil contamination.

Solution and Monitoring Description

IMS-TP Turbo Pump Inspection ＆ Analysis Instrument
For turbo pumps with magnetic bearings, vibration levels are relatively small, so spectrum analysis is required for comparison. In addition, the most critical issue of magnetic bearing systems is dynamic balance. For example, when the rotational frequency is relatively high, it indicates poor balance. By using a portable inspection and analysis device, we ensure the pump’s quality and perform predictive maintenance to prevent unexpected shutdowns.

Measurement Condition

Measurement Method: Using rotor spectrum analysis function for measurement
Comparison of Equipment A / B at 223 Hz Operating Speed

Equipment B shows a clear imbalance phenomenon!

Equipment A

Equipment B

Measurement Conclusion

・The vibration level of the TURBO PUMP is extremely small, and spectrum analysis must be used for comparison.
・The most critical issue for TURBO PUMP magnetic bearings is dynamic balance; when the rotational frequency is relatively high, it indicates poor balance.
・Equipment B at 223 RPM shows a clear imbalance phenomenon, with vibration approximately 8.6 times that of Equipment A.
・Both radial (adhesive, hand-pressed) and axial inspections revealed significant imbalance differences in Equipment B, suggesting further testing.

IMS-TP Turbo Pump Inspection ＆ Analysis Instrument can classify and build dedicated maps according to different plant areas and equipment attributes. It can also establish multiple measurement points for each device. The system instantly displays the equipment status on the map, with indicator lights showing quality conditions, thereby providing users with a reliable basis for immediate maintenance and scheduling.

IMS-TP Turbo Pump

Suitable for quality inspection of various turbo pumps