In the heat exchanger calculation, the actual bolt section area of the cylinder flange is smaller than the required cross-sectional area. What's the matter?
2, increase the number of bolts3. Increase the bolt diameter without increasing the number of bolts, such as changing from M20 to M24...4, both increase the number of bolts, and increase the number of bolts...
Generally choose JB/T4700-2000 "pressure vessel flange" in the flange, you do not need to calculate
Bolt strength shortage, improvement method:1, check the matching of bolts and gaskets... Do not use low strength bolts with metal gaskets or gaskets.. Unreasonable。
