Nozzle with Repad Design Tool ver E5.00
|
|
|
|
|
|
|
|
|
|
|
|
|
Description
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Shell Inputs:
|
|
|
|
|
|
|
|
|
|
|
Material
|
|
|
|
|
|
|
|
|
Sv [psi] - allowable stress
|
|
|
|
|
|
|
|
E1 - efficiency of shell
at nozzle
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
nt [in] - nominal shell wall thickness
|
|
|
|
|
|
|
Treq [in] - required shell wall thickness
|
|
|
|
|
|
|
sca [in] - shell corrosion allowance
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Nozzle Inputs:
|
|
|
|
|
|
|
|
|
|
|
Material
|
|
|
|
|
|
|
|
|
Sn [psi] - allowable stress
|
|
|
|
|
|
|
|
E - nozzle efficiency
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Do [in] - outside diameter of nozzle
|
|
|
|
|
|
|
Nwall [in] - nominal wall thickness of nozzle
|
|
|
|
|
|
UTP [%] - undertolerance allowance
|
|
|
|
|
|
|
Lp [in] - exterior projection of nozzle
|
|
|
|
|
|
|
Ip [in] - interior projection of nozzle
|
|
|
|
|
|
|
nca [in] - nozzle corrosion allowance
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Pn [psi] - interior pressure
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Reinforcement:
|
|
|
|
|
|
|
|
|
|
|
Material
|
|
|
|
|
|
|
|
|
Sp [psi] - allowable stress of repad
|
|
|
|
|
|
|
te [in] - repad thickness
|
|
|
|
|
|
|
|
Dp [in] - outside diameter
|
|
|
|
|
|
|
|
Leg41 [in] - fillet size
|
|
|
|
|
|
|
|
Leg42 [in] - fillet size
|
|
|
|
|
|
|
|
Leg43 [in] - fillet size
|
|
|
|
|
|
|
Variables:
|
|
|
http://www.pveng.com/
|
|
|
|
|
|
|
UT [in] =
|
Nwall*UTP
|
|
|
|
|
|
Rn [in] =
|
Do/2 - (Nwall-nca) + UT
|
|
|
|
|
|
ti [in] =
|
Nwall-2*nca
|
|
|
|
|
|
h [in] =
|
MIN(Ip-sca,2.5*nt,2.5*ti)
|
|
|
|
|
|
tn [in] =
|
Nwall-nca
|
|
|
|
|
|
d [in] =
|
Do-2*tn
|
|
|
|
|
|
fr1 =
|
MIN(Sn/Sv,1)
|
|
|
|
|
|
fr2 =
|
MIN(Sn/Sv,1)
|
|
|
|
|
|
fr3 =
|
MIN(Sn/Sv,Sp/Sv,1)
|
|
|
|
|
|
fr4 =
|
MIN(Sp/Sv,1)
|
|
|
|
|
|
Required
Nozzle Thickness: UG-27(c)(1,2)
|
|
|
|
|
|
|
trnR [in] =
|
(Pn*Rn)/(Sn*1 - 0.6*Pn)
|
|
|
|
|
|
Area Replacement:
|
|
|
|
|
|
|
|
|
Ar [in^2] =
|
1*d*Treq*1+2*tn*Treq*1*(1-fr1) required Area
|
|
|
A1 [in^2] =
|
max(d,
2*(nt+tn)) * (E1*nt-1*Treq)-2*tn*(E1*nt-1*Treq)*(1-fr1)
|
|
|
A2 [in^2] =
|
min((tn-trnR)*fr2*min(5*nt,2*Lp),(tn-trnR)*(Min(2.5*tn+te,2*Lp)*fr2*2))
|
|
|
A3 [in^2] =
|
Min(5*nt*ti*fr2,5*ti*ti*fr2,2*h*ti*fr2)
|
|
|
A5 [in^2] =
|
(Dp-d-2*tn)*te*fr4
|
|
|
A41 [in^2] =
|
Leg41^2*fr3
|
|
|
A42 [in^2] =
|
Leg42^2*fr4
|
|
|
A43 [in^2] =
|
(Leg43-nca)^2*fr2
|
|
|
Aa [in^2] =
|
A1+A2+A3+A5+A41+A42+A43 actual area
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Pressure Vessel
Engineering Ltd.
|
|
Finite Element
Analysis ASME Code
Calculations Canadian Vessel Registration
|
|
120 Randall Drive,
Suite B, Waterloo, Ontario, Canada, N2V 1C6. 519 880-9808
|
|
www.pveng.com
|
|