US 11,773,869 B2
Systems for a pump seal chamber
Balaji Hosadurgam Ravindranath, Mysore (IN); Neil Blythe, Erie, PA (US); and Charles Atz, New Castle, PA (US)
Assigned to TRANSPORTATION IP HOLDINGS, LLC, Norwalk, CT (US)
Filed by Transportation IP Holdings, LLC, Norwalk, CT (US)
Filed on Jan. 18, 2021, as Appl. No. 17/151,592.
Claims priority of provisional application 63/069,977, filed on Aug. 25, 2020.
Prior Publication US 2022/0065262 A1, Mar. 3, 2022
Int. Cl. F04D 29/42 (2006.01); F04D 29/70 (2006.01)
CPC F04D 29/426 (2013.01) [F04D 29/708 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A seal chamber housing for a centrifugal pump, the seal chamber housing comprising:
a central cavity internal to the seal chamber housing, the central cavity having a greater diameter at a first end of the seal chamber housing and a smaller diameter at a second end of the seal chamber housing; and
at least one flushing passage at the second end of the seal chamber housing, the at least one flushing passage configured to directly fluidically couple the central cavity to an exterior of the seal chamber housing,
wherein the at least one flushing passage forms a channel in a back external surface of the seal chamber housing at the second end, the back external surface of the seal chamber housing in face-sharing contact with a seal plate.