COMPRESSOR

• US 20200132088A1
• Filed: 10/24/2019
• Published: 04/30/2020
• Est. Priority Date: 10/25/2018
• Status: Active Grant

• Current Assignee: Mitsubishi Heavy Industries Compressor Corporation (Mitsubishi Heavy Industries, Ltd.)
• Original Assignee: Mitsubishi Heavy Industries Compressor Corporation (Mitsubishi Heavy Industries, Ltd.)
• Inventors: Oda, Takashi
• Granted Patent: US 11,073,167 B2
• Time in Patent Office: Days
• CPC Class Codes: F01D 25/002 Cleaning of turbomachines
• CPC Class Codes: F04D 17/00 Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps F04D21/00 takes precedence
• CPC Class Codes: F04D 17/122 the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage compressors
• CPC Class Codes: F04D 29/4213 suction ports
• CPC Class Codes: F04D 29/705 Adding liquids
• CPC Class Codes: F05D 2260/607 Preventing clogging or obstruction of flow paths by dirt, dust, or foreign particles

Abstract

A compressor 100 includes: a rotor 10 having a rotary shaft 11 rotating around an axis A, and an impeller 12 provided integrally with the rotary shaft 11; a casing 5 having a casing main body 51 which surrounds the rotor 10 and forms an annular inlet flow path F1 surrounding the axis A at a front stage of the impeller 12, and an inlet nozzle 52 which introduces a fluid into the inlet flow path F1 from an outer side in a radial direction Dr; an external pipe 2 connected to the inlet nozzle 52 to introduce the fluid from the outside to the inlet nozzle 52; and a cleaning liquid supply part 4 which is configured to supply a cleaning liquid from a plurality of locations in a circumferential direction of the external pipe 2 to an interior of the external pipe 2.

Claims

1. A compressor comprising:

a rotor having a rotary shaft which is configured to rotate around an axis, and an impeller provided integrally with the rotary shaft;

a casing having a casing main body which surrounds the rotor and forms an annular inlet flow path surrounding the axis at a front stage of the impeller, and an inlet nozzle which is configured to introduce a fluid into the inlet flow path from an outer side in a radial direction;

an external pipe connected to the inlet nozzle to introduce the fluid from an outside of the compressor to the inlet nozzle; and

a cleaning liquid supply part which is configured to supply a cleaning liquid from a plurality of locations in a circumferential direction of the external pipe to an interior of the external pipe.

2. The compressor according to claim 1, wherein the cleaning liquid supply part includes

a plurality of nozzle parts which are disposed at intervals in the circumferential direction of the external pipe in a state of penetrating the interior and an exterior of the external pipe and inject the cleaning liquid toward the interior of the external pipe,

a circumferential flow path part which connects the plurality of nozzle parts to each other at the exterior of the external pipe,

a tank part for storing the cleaning liquid,

a supply flow path part which connects the tank part and the circumferential flow path part, and

a pump part for pumping the cleaning liquid in the tank part to the circumferential flow path part.

3. The compressor according to claim 2, wherein the plurality of nozzle parts are disposed at equal intervals in the circumferential direction of the external pipe.

4. The compressor according to claim 1, wherein the external pipe includes a straight pipe part which is directly connected to the inlet nozzle and extends to form a flow path which is linear with respect to the inlet nozzle, and

a curved part which is connected to the straight pipe part on a side opposite to the inlet nozzle and forms a curved flow path, and

the cleaning liquid supply part is provided in the straight pipe part.

5. The compressor according to claim 2, wherein the external pipe includes

a straight pipe part which is directly connected to the inlet nozzle and extends to form a flow path which is linear with respect to the inlet nozzle, and

a curved part which is connected to the straight pipe part on a side opposite to the inlet nozzle and forms a curved flow path, and

the cleaning liquid supply part is provided in the straight pipe part.

6. The compressor according to claim 3, wherein the external pipe includes

a straight pipe part which is directly connected to the inlet nozzle and extends to form a flow path which is linear with respect to the inlet nozzle, and

a curved part which is connected to the straight pipe part on a side opposite to the inlet nozzle and forms a curved flow path, and

the cleaning liquid supply part is provided in the straight pipe part.