Centrifugal compressor casing and centrifugal compressor
AssigneeMitsubishi Heavy Industries Compressor Corporation
InventorHideki Yamada
Life of this patent
Estimating the term…
Abstract
A centrifugal compressor casing, comprising a bundle which rotatably supports a rotating shaft, and an impeller fixed to the rotating shaft and that rotates with the rotating shaft about an axis of the rotating shaft, and in which an annular suction flow channel centered on the axis introduces fluid into the flow channel of the impeller, and an annular discharge flow channel centered on the axis that discharges the fluid from the flow channel of the impeller, are formed; a casing main body which covers the bundle from the outer circumferential side; and a volute piece which is provided on an inner surface of the casing main body in the discharge flow channel.
Claims7
A centrifugal compressor casing, comprising:
- a bundle that rotatably supports a rotating shaft, and an impeller fixed to the rotating shaft and that rotates with the rotating shaft about an axis of the rotating shaft;
- an annular suction flow channel centered on the axis that introduces fluid into a flow channel of the impeller;
- an annular discharge flow channel centered on the axis that discharges the fluid from the flow channel of the impeller;
- a casing main body that covers the bundle from an outer circumferential side;
- a volute piece that is disposed on and in direct contact with an inner surface of the casing main body in the discharge flow channel, and has a thickness dimension in a radial direction of the rotating shaft which gradually decreases toward an outlet of the discharge flow channel in a downstream side in a flowing direction of the fluid, in the circumferential direction of the rotating shaft;
- and
- a fastening member that fixes the volute piece to the casing main body, wherein
- the volute piece comprises a first piece portion disposed on the downstream side in the flowing direction of the fluid;
- and
- a second piece portion that is formed separately from the first piece portion and is disposed on an upstream side of the first piece portion in the flowing direction of the fluid.
Dependencies are inferred from the claim text.