Intake-air cooling device

Patent metadata

Field	Value
Publication number	US-9790858-B2
Application number	US-201414769237-A
Country	US
Kind code	B2
Filing date	Jan 28, 2014
Priority date	Mar 26, 2013
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

An intake-air cooling device is disposed on a rear-stage side of a pre-filter disposed on an intake-air inlet side of an intake-air duct for guiding intake air taken in from an intake-air inlet to a compressor, for cooling the intake air by spraying water to the intake air. The intake-air cooling device includes a plurality of nozzles configured to spray the water to the intake air, a plurality of water conduit pipes including the plurality of nozzles arranged in an axial direction of the plurality of water conduit pipes, and a plurality of supply pumps configured to supply the water to a corresponding one of the plurality of water conduit pipes. Each of the plurality of water conduit pipes is an endless member which has a different perimeter.

First claim

The invention claimed is:

1. An intake-air cooling device disposed on a rear-stage side of a pre-filter disposed on an intake-air inlet side of an intake-air duct for guiding intake air taken in from an intake-air inlet to a compressor, for cooling the intake air by spraying water to the intake air, the intake-air cooling device comprising:
a plurality of nozzles configured to spray the water to the intake air;
a plurality of water conduit pipes on which the plurality of nozzles is disposed in an axial direction of the plurality of water conduit pipes; and
a plurality of supply pumps provided for the plurality of water conduit pipes, respectively, and configured to supply the water to a corresponding one of the plurality of water conduit pipes,
wherein the plurality of water conduit pipes includes a plurality of endless members, respectively,
wherein each of the plurality of endless members includes at least one nozzle arrangement part on which at least one of the plurality of nozzles is disposed in the axial direction of the plurality of water conduit pipes,
wherein each of the plurality of endless members has a perimeter that is different from other ones of the plurality of endless members, the plurality of endless members being arranged concentrically or eccentrically,
wherein the plurality of water conduit pipes includes a plurality of introduction parts, respectively, the plurality of introduction parts being connected to the plurality of endless members, respectively, and being configured to supply the water from the plurality of supply pumps to the plurality of endless members, respectively, and
wherein, in each of the plurality of endless members, the at least one of the plurality of nozzles is arranged such that a distribution density of the at least one of the plurality of nozzles increases as a distance from a connecting portion between a corresponding one of the plurality of endless members and a corresponding one of the plurality of introduction parts increases in the axial direction of the plurality of water conduit pipes.

2. The intake-air cooling device according to claim 1 ,
wherein the supply pumps are variable-speed pumps capable of adjusting a flow rate of the water through inverter control.

3. The intake-air cooling device according to claim 2 ,
wherein the supply pumps are configured to adjust the flow rate of the water on the basis of at least one of a temperature of the intake air, a humidity of the intake air, an opening degree of inlet guide vanes of the compressor, and a load of a gas turbine.

4. The intake-air cooling device according to claim 1 ,
wherein each of the plurality of endless members has a rectangular perimeter.

5. An intake-air cooling device disposed on a rear-stage side of a pre-filter disposed on an intake-air inlet side of an intake-air duct for guiding intake air taken in from an intake-air inlet to a compressor, for cooling the intake air by spraying water to the intake air, the intake-air cooling device comprising:
a plurality of nozzles configured to spray the water to the intake air;
a plurality of water conduit pipes on which the plurality of nozzles is disposed in an axial direction of the plurality of water conduit pipes; and
a plurality of supply pumps provided for the plurality of water conduit pipes, respectively, and configured to supply the water to a corresponding one of the plurality of water conduit pipes, wherein the plurality of water conduit pipes includes a plurality of endless members, respectively, wherein each of the plurality of endless members includes a plurality of nozzle arrangement parts on which at least one of the plurality of nozzles is disposed in the axial direction of the plurality of water conduit pipes,
wherein each of the plurality of endless members has a perimeter that is different from other ones of the plurality of endless members, the plurality of endless members being arranged concentrically or eccentrically, and
wherein, in each of the plurality of endless members, all of the nozzle arrangement parts are connected to each other, all of the nozzle arrangement parts are partitioned from one another, and the water supplied to a corresponding one of the plurality of water conduit pipes is supplied to the nozzle arrangement parts included in the corresponding one of the plurality of water conduit pipes, and
wherein, in each of the plurality of endless members, all of the nozzle arrangement parts connected to and partitioned from each other are configured to be supplied with the water by a corresponding one of the plurality of supply pumps connected to each of the plurality of endless members, such that each corresponding one of the plurality of supply pumps is fluidly connected to each of the nozzle arrangement parts of each of the plurality of endless members.

6. The intake-air cooling device according to claim 5 ,
wherein the supply pumps are variable-speed pumps capable of adjusting a flow rate of the water through inverter control.

7. The intake-air cooling device according to claim 6 ,
wherein the supply pumps are configured to adjust the flow rate of the water on the basis of at least one of a temperature of the intake air, a humidity of the intake air, an opening degree of inlet guide vanes of the compressor, and a load of a gas turbine.

Assignees

• Mitsubishi Hitachi Power Sys

Inventors

• Kanebako Atsuhiko

Classifications

• F04B49/06

  Control using electricity (regulating by means of floats actuating electric switches F04B49/04) · CPC title

• F02C7/1435 Primary

  by water injection · CPC title

• F04B17/03

  driven by electric motors · CPC title

• F05D2210/12

  gaseous, i.e. compressible · CPC title

• F02C9/16

  Control of working fluid flow (F02C9/48 takes precedence; control of air-intake flow F02C7/057) · CPC title