Thrust box and skid for a horizontally mounted submersible pump
A thrust chamber using a single thrust bearing and having seals secured to the thrust chamber case. Also a skid for a horizontally mounted submersible pump, thrust chamber and drive mechanism. The skid having a thrust chamber mounting bracket which provides positive mounting locations thus allowing for the change out of the thrust chamber without removing the drive mechanism.
1. A thrust box comprising:
a case having an interior, and a first passageway and an opposing second passageway;
a shaft passing through the case and the first and second passageway;
a first and second bearing located inside the case and holding the shaft in alignment relative to the case;
a first seal secured to the case by a first collar and providing a seal between the first passageway and the shaft;
a second seal secured to the case by a second collar and providing a seal between the second passageway and the shaft;
a thrust bearing mounted in the interior of the case;
an upthrust ring secured to the shaft and engaging the thrust bearing.
2. The thrust box of claim 1 , further comprising the interior being completely flooded with lubricant.
3. The thrust box of claim 2 , further comprising the case interior being in fluid communication with a pump and a heat exchanger wherein the lubricant can be pumped under vacuum pressure through the pump and the heat exchanger and back into the case interior.
4. The thrust box of claim 1 further comprising
a spool attached to the case; and
one or more passageways extending through the spool;
wherein the shaft extends through the spool.
5. The thrust box of claim 1 , further comprising the shaft having only a single radial groove, the groove and a keyway securing the thrust runner to the shaft.
6. The thrust box of claim 5 , further comprising
a pump inlet; and
a seal located between the pump inlet and the shaft;
wherein the shaft is smooth-adjacent to the seal.