Centrifugal pump
AssigneeSulzer Management AG
InventorsThomas Welschinger, Marc Widmer
Life of this patent
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Abstract
A centrifugal pump includes a housing including a pump inlet and a pump outlet, a rotor arranged in the housing, and including an impeller to convey fluid from the inlet to the outlet and a pump shaft extending from a first end to a second end, the impeller fixedly connected to the pump shaft, a balance disk fixedly connected to the first end of the pump shaft and cooperating with a stationary counter ring, to provide a radial gap between the balance disk and the counter ring, so that a movement of the pump shaft in the axial direction closes or opens the radial gap, and a balance drum fixedly connected to the pump shaft adjacent the second end of the pump shaft and cooperating with a stationary counterpart to provide an axial gap between the balance drum and the counterpart.
Claims15
A centrifugal pump comprising:
- a housing comprising a pump inlet configured to receive a fluid at a suction pressure and a pump outlet configured to discharge the fluid at a discharge pressure;
- a rotor arranged in the housing, and comprising an impeller configured to convey the fluid from the inlet to the outlet and a pump shaft to rotate about an axial direction, with the pump shaft extending from a first end to a second end, the impeller fixedly connected to the pump shaft;
- a balance disk fixedly connected to the first end of the pump shaft and configured to cooperate with a stationary counter ring, to provide a first gap extending in a radial direction and disposed in the axial direction between the balance disk and the counter ring, so that a movement of the pump shaft in the axial direction closes or opens the first gap;
- and
- a balance drum fixedly connected to the pump shaft adjacent the second end of the pump shaft and configured to cooperate with a stationary counterpart to provide a second gap extending in the axial direction axially disposed between the balance drum and the stationary counterpart.
Dependencies are inferred from the claim text.