You seem to have masses of folks asking you to help identify their orchids, and I'm afraid that's exactly what I'm going to do, too.
I've had this plant for years. It flowered once, with a branching spike. The flowers were white and faintly scented. I've no idea what I did to persuade it to flower.
Actually, that's a lie. The parent plant suffered a major die-back some years ago, and this one was grown from a bit that fell off. Parent plant is now minute, compared with its off-shoot!