I had a similar plant like that (won through a raffle) and we never had a proper ID.
The donor believed it was an epidendrum but given all the taxonomical musical chairs I would not be surprised if its now called a different genus.
It never bloomed for me either. It just kept producing new canes and aerial roots. It was almost in full sun and the leaf tips had a purple tint, but no spikes. I had it for about three years before I gave up and it "disappeared".
I tried generic epidendrum culture - no flowers.
I tried dendrobium nobile culture - no flowers and almost wilted to death.
Just for kicks, here's an encyclia porpax that I saw in Hawaii a couple of years ago. No flowers too despite overall good health.
The curator at the Botanical Gardens said he never saw it bloom either. And this is in Hawaii!