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APPENDIX D. Straightening vane design
1. Fig.D.1 shows the design of type A straightening vane that is manufac-
tured according to the following rules:
a) straightening vane plate thickness is equal to the diameter of the
holes; depending on material, the plate can be made of one or several
sheets
b) all the diameters of the holes in the plate are equal
c) holes are spread more thickly in the center of the plate, and more rare-
ly – at the periphery
d) holes have chamfers from the flow inlet site.
D – internal diameter of the pipeline where the straightening vane is inserted.
Fig.D.1. Design of type A flow straightening vane.
2. To lower weight and material quantity a type B straightening vane (Fig.
D.2) can be used, it is manufactured according to the following rules:
a) tubes are inserted in the plate holes
b) tube length is equal to tube diameter
c) all the diameters of the holes in the plate are equal
d) holes are spread more thickly in the center of the plate, and more rare-
ly – at the periphery
e) holes have chamfers from the flow inlet site.
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