Our client has decided to modernize the screw connection of the turbine flanges. In place of the traditional connection with stud bolts crewed into the lower half of the cosing, it was decided to make through holes with a slightly larger diameter than the original solution.
In the first step, due to the shape of the casting, a feasibility study had to be carried out – for this purpose, a 3D scan of the flanges was performed, with a particular focus on the radii of the transition to the casing area. The result is a three-dimensional model of the casing’s fragment within the area of planned upgrade.
On the same model, the holes were simulated along with the planes for the nuts, which allowed to determine the remaining thickness of the casing/flange walls.
As a result, it has been determined which holes can be upgraded.
Next steps – machining holes and faces for the nuts from the bottom of the flange are already standard work and presented many times by us.
All connection elements – double-sided screws, cap nuts provided by WWtech, of course.
Very short video of boring:
The 3D scan shows the video:
https://www.youtube.com/watch?v=Yay8M4dhc-w&ab_channel=FAROTechnologies%2CInc.
