Grasshopper, Voronoi, Multipipe. not getting a good result

I have a created, through PopGeo and Voronoi, then brebrep, a series of closed curves that belong to a surface.
Now I want to use this curves to create a multipipe where the nodes are bigger than the pipes itself.
I want to reach something like seen in the yellow image.

Thank you all in advance!

prueba (20.5 KB)

I tried to solve your problem and encountered mine.
So I open a new thread. I solved it. You can find your answer there.