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AutoPIPE Wiki .l - Rotating Equipment - Modeling in AutoPIPE
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    • -Pipe and Vessel Stress Analysis - Wiki
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          • .b - Cuts: Cold Spring Modeling example in AutoPIPE
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          • .k - Pipes - Modeling in AutoPIPE
          • .l - Rotating Equipment - Modeling in AutoPIPE
          • +01a. Model Different Types of PIPING in AutoPIPE
          • +01b.Model Different Types of PIPING Components - AutoPIPE
          • +01c. Model Non-metallic Plastic Piping (i.e. Plastic, PVC, PP, PPR, HDPE, PE, FRP, GRP, etc.)
          • +01d. Model a Ring Main (circular header) with AutoPIPE
          • 01e. Model a LONG PipeLines with AutoPIPE
          • +01f. Model Different Types of PIPING Routings (i.e. By-Pass, Join 2 pipe runs, etc..) using AutoPIPE
          • +02a. Model Subsea (Underwater) Piping - AutoPIPE
          • 02b. Modeling Offshore Piping per BS8010 or CSAZ662 section 11 Piping Codes
          • +02c. Model Soil Properties with Soil Calculator and Underground Piping in AutoPIPE
          • +03a. Model Rotating Equipment: Pumps, Compressor, Turbine in AutoPIPE
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          • 04f. Model Vacuum (Negative Pressure) Piping in AutoPIPE
          • 04g. Model Fluid / Gas Density in AutoPIPE
          • 04h. Modeling Thermal Bowing Analysis with AutoPIPE
          • +04i. Model Pump / Compressor (Oscillating) Vibration - AutoPIPE
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          • 04n. How to model / perform Creep Analysis with AutoPIPE?
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          • 04p. Input node point displacement / acceleration from field data in AutoPIPE?
          • 04r. How to model a Relief Valve thrust force in an AutoPIPE model?
          • 04s. How to model a thrust via a flowing fluid (i.e. impulse-momentum change equation) to an AutoPIPE model?
          • 04t. How to model the load on a piping system installed on a ship, Rig, or FPSO (Floating Production Storage and Offloading) when using AutoPIPE?
          • +05a. Cut / Copy / Paste / Rotate / Move / Stretch Commands
          • +05b. AutoPIPE command - "Convert Point to" - Run, Bend, or Tee
          • +05d. Delete Command in AutoPIPE
          • 06a. Modeling approach to account for piping beyond modeled piping
          • 06b. Apply More Than 1 Piping Code In an AutoPIPE Model
          • 06c. How to model a liquid (water) / gas (foam or air) Fire Protection piping system in AutoPIPE?
          • 06d. How to model vaporization / boiling of liquid in pipe that causes a pressure wave to travel up the line in AutoPIPE?
          • 06e. How to model a pipe riser (vertical pipe) to correctly account for GR weight on each floor support in AutoPIPE
          • 06f. Modeling a Manway / access port in a pipe sidewall using AutoPIPE
          • 06g. Using load case displacement as a new starting point for analysis in AutoPIPE?
          • 06h. How to model node point shared by more than 1 model?
          • 06i. How to model miss aligned pipe pulled back into original position using AutoPIPE?
          • 06j. How to model lifting pipe segment(s) using AutoPIPE?
          • 06k. How to model piping systems not aligned with the global axis using AutoPIPE?
          • 7a. Modeling scenario using AutoPIPE: hot tapping a pipeline under operating condition, stresses in system after plant shutdown
          • 7b. Model Joule-Thomson effect and solving the transient heat transfer through the thickness of the pipe using AutoPIPE?
          • Tutorial - Water Hammer (Time History) Example - Modeling Approach in AutoPIPE
        • +Modules (i.e. Flange Analysis, Spring Hanger Selection, Rotating Equip, TTA) in AutoPIPE
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    .l - Rotating Equipment - Modeling in AutoPIPE

    Comments, Questions, and Answers on this modeling approach in AutoPIPE

    Item #1:

    • Modeling Mechanical Oscillating Vibrations in AutoPIPE

    item #2:

    On the rotating dialog screen what is meant by Reference point and Dx, Dy, Dz values?

    Answer:

    From the online help:

    Specify the global offset values DX, DY, and DZ from the reference point to define the location of the center point of the pump. Since AutoPIPE cannot display a point for the center of the pump, the pump center is defined relative to the suction nozzle or discharge nozzle.

    Example: ANSI 4x3 (A40)

     Item #3:

    I have introduced a pump at the delivery point , but I cannot see nor numerically or graphically that effectively the pump is inserted (sent you the return model, in this case there is no pump)

    Answer:

    Correct, there is no Pump / Compressor equipment element to be displayed in the AutoPIPE model. The Rotating Equipment module performs additional calculations on the the piping geometry and loads already modeled and provided the results of these extra calculations in the output report. 

    Again, no Pump / Compressor element will be displayed in the model. 

    Item #4:

    How do we check the pipe loads on pump Suction & Discharge piping?

    Answer:

    First we should model the Hot Pump as RIGID Pipe (shown as purple in image below) which Heats up and Expands

    We can use either Reference points and/or User equipment to check the pump loads

    Reference Points are Defined at the Suction & Discharge nozzles

    In this example we have a special manufacturer pump with allowable loads defined in User Rotating equipment

    The rotating equipment report checks all load combinations and reports nozzle loads. In this example the loads exceed the recommended allowables and FAIL is placed to the right of failed value in the report, as indicated in red below. 


    See Also

    Modeling Approaches

    Bentley AutoPIPE

    • AutoPIPE
    • Modeling
    • Rotating Equipment
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    • History
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    • Cancel
    • Mike Dattilio Created by Bentley Colleague Mike Dattilio
    • When: Mon, Apr 7 2014 11:53 AM
    • Mike Dattilio Last revision by Bentley Colleague Mike Dattilio
    • When: Tue, Dec 19 2017 7:55 PM
    • Revisions: 7
    • Comments: 0
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