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How to model a pipe Strainer / Filter in Basket or Y-type configuration with AutoPIPE?
Simply stated, a Strainer is also a filter, the only difference being is that a Strainer removes larger particals where a filer removes smaller finer particals.
In essence both of these devices are model in similar ways using the procedure below:
Example #1: insert a 1.5 ft long filter / strainer starting at node point A05, the weight of the strainer is 100lbs, and weight of contents in strainer is 50 lbs. Flange connections are Slip on 300# rating. For analysis purpose, model has 4 Temperature / Pressure Load cases
a. Set current node point to A05
b. Insert Slip-on flange set, 300#. "Insert Matting Flange" enabled
c. Insert Run, Length = 9", B06
d. Insert Run, Length = 9", B07
e. Insert Slip-on flange set, 300#. "Insert Matting Flange" enabled
f. Select Node points B05 - B07, Insert > Rigid Options over Range, Include Weight = Disabled, Include Thermal Exp.= Enabled
f. Enter weight of Strainer / Filter, select Node point B06, Insert> Xtra Data> Additional Weight, vertical Dy = 100 lbs
Note: another modeling approach would be to consider the weight as a distributed load.
g. Enter Strainer / Filter contents weight load case.
Notes:
1. AutoPIPE calculates the content weight of an typical piping component by multiplying: (inner pipe diameter) x (length of component) x (Pipe Property Specific Gravity) x (Analysis Set Density Factor [default=1]).
2. With inserting "Rigid Options over Range" in step above, the total weight of the component + contents were removed from that section of piping:
Cannot combine content weight with Gravity load case (GR), suggest combining with all Thermal (T1...Tn) or Pressure (P1..Pn) Load case, but not both. Any combination with Thermal or Pressure Load cases will consider weight of contents.
Suggest to account for contents weight, Select node points B06, Insert> Xtra Data> Concentrated Force, Load case to combine with = T1 - T4 (All thermal cases
Note: another modeling option would to consider the contents as a distributed load case.
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