Centrifugal pump for pumping a multiphase suspension and a gas removal device for use in a centrifugal pump
AssigneeSulzer Management AG
InventorsKalle Titinen, Janne Ripattila
Life of this patent
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Abstract
A centrifugal pump includes a pump housing having a suspension inlet and a suspension outlet and a flow channel between the inlet and the outlet, a shaft mounted by bearings for rotation about a center axis, an impeller which is rotatable by the shaft, in alignment with the inlet and arranged to be rotated about the axis in the flow channel, and gas collecting openings for gas removal arranged in the flow channel. The inlet end of the flow channel includes a number of static vanes comprising gas collecting openings, the vanes extend radially from an inner wall of the flow channel toward the center of the flow channel and are upstream of the impeller.
Claims15
A centrifugal pump for pumping a multiphase suspension containing liquid, solid material and gas, the pump comprising:
- a pump housing having a suspension inlet and a suspension outlet and a flow channel between the inlet and the outlet;
- a shaft mounted by bearings so as to be capable of rotating about an axis;
- an impeller rotatable by the shaft, in alignment with the suspension inlet and arranged to be rotated about the axis in the flow channel;
- gas collecting openings configured to remove gas arranged in the flow channel, an end of the flow channel at the inlet includes a number of static vanes comprising the gas collecting openings connected to gas channels extending through the static vanes, the static vanes extending radially from an inner wall of the flow channel toward a center of the flow channel, and the vanes disposed upstream of the impeller,
- wherein the gas collecting openings are disposed at a trailing edge of a respective vane, and/or the gas collecting openings are provided at a backside of the respective vane, with respect to a flow direction when in use.
A gas removal device configured to be coupled to an inlet of a centrifugal pump, the gas removal device comprising:
- a tubular element having a first axial end and a second axial end and a flow channel between the first and second axial ends;
- static vanes extending radially from an inner wall of the flow channel toward the center of the flow channel, the static vanes including gas collecting openings connected to gas channels extending through the vanes, the gas removal device is configured to be located axially upstream of an impeller of the centrifugal pump,
- wherein the gas collecting openings are disposed at a trailing edge of a respective vane, and/or the gas collecting openings are provided at a backside of the respective vane, with respect to a flow direction when in use.
Dependencies are inferred from the claim text.