K-Flange Flange Design: Beyond
K-Flange is windows based software
for the design of bolted flange joints that meet ASME Code requirements.
However, Code compliance does not guarantee a trouble free bolted
K-Flange has the capability to go "Beyond the Code" to
evaluate external bending moments and forces, as well as the ability
to address the leak tightness of the design with practical operating
||K-Flange performs flange design calculations
in accordance with ASME Code requirements, in addition to
leakage evaluation capability described below. The code design
capabilities include ASME Section VIII Division 1, ASME Section
III, and the new ASME/PVRC Method under development. The
program also includes the ability to handle external moments
and forces, and several design options. The user can check
the pressure rating of an existing flange design, such as
Re-Rating Standard Flange geometries, calculate a new flange
thickness, or utilize an automatic flange design option where
the user specifies the gasket and attached pipe thickness
and diameter and the software does the rest. K-Flange also
includes a database of standard flanges and gaskets, gasket
properties, and flange and bolt allowable stress values.
The flange leakage capability is based on the new ASME/PVRC gasket
constants based on tightness. A structural analysis of the flange
/ bolt / gasket system flexibilities is performed to determine the
assembly and operating gasket stress levels. The initial assembly
stress, internal pressure, external loads and moments, thermal differentials,
gasket modulus, and gasket creep are all included in the analysis.
Bellville washers or bolt collars may be included in the analysis.
The software also predicts the minimum and maximum gasket stress
between and under the bolts.
Fluid properties may be varied. The default
reference fluid is helium and other fluid properties are
K-Flange can be used to troubleshoot flange problems and
do “What if” evaluations quickly. Different gaskets
can be evaluated and compared.
The PVRC gasket constants are based on the methodology
developed by a long history of research projects and WRC
Bulletins under the Pressure Vessel Research Council. The
gasket constants relate gasket stress with “tightness” for
both gasket loading and unloading.
A free Demonstration Version of the software is available by clicking
on the link below:
Download K-Flange Demo