Vertical Pump의 Steel Structure

Vertical Pump의 Steel Structure

 

 API 610 11th에서는 Vertical Pump의 Steel Structure가 펌프 운전속도와 20% Separation Margin을 확보하여 설계될 수 있도록 언급하고 있다. 

 

 

 

 ● Dynamics

 

If specified, the vendor shall furnish a dynamic analysis of the pump and its support structure to confirm acceptability of the design. The purchaser and the vendor shall agree on the extent, method and acceptance criteria for this analysis.

 

Vertically suspended pumps are generally flexible structures with runnung speeds located between natural frequencies. As such, they are susceptible to resonant vibration if their separation margins are not verified during design. The basic structural elements typically include the foundation, pump structures and motor frames. Typically, the deflection of the foundation represents less than 5% of the total deflection of the structural elements. If foundation data are not available when the analysis is being conducted, an agreed-upon value should be used. Generally, a 20% margin of separation should be maintained between the natural frequency of the motor support structure and the operating speed.

 

[ API 610 11th, Para. 9.5.3 ]

 

 

 

 

 

 

 

 

 

 

 

Centrifugal Pump의 Analysis 검토 

Centrifugal Pump의 Analysis 검토

 

 

 

 

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