in that case - VVD check is wrong.
9.4.5.2 says that if reinforcing plate is used (with or without nozzle) equation d/(2*ris) <=0.5 shall be satisfied. so form me with nozzle and pad the equation will be dib/(2*ris) <=0.5
Thank you for your time.
thank you for the answer
r6155: according to you, the condition with the pad must be checked. But for d shall I use diameter of the opening or inside diameter of the nozzle?
example: shell 168,3x5,6 / nozzle 88,9x8.
- without pad condition dib/(2ris)<=1 met
- with pad and d as dib with my...
you may have right but there is something bothering me.
i have nozzle reinforced by pad. i have VVD also and it check d/(2*ris) <=0.5.
strange is when i calculate in VVD nozzle without pad it checks dib/(2ris)<=1.
i'm now preparing calculation sheet in mathcad and i dont know how to bite this...
First of all, sorry for my english.
I have a little problem with understanding one of the point in standard 13445-3.
there is a condition "shell reinforced opening without a nozzle shall satisfy the following condition d/(2*ris) <=0.5"
d is opening diameter
ris is shell inside radius
but...
