Surge prevention for compressor inlet air fogging
AssigneeMee Industries, Inc.
InventorThomas R. Mee
Life of this patent
Estimating the term…
Abstract
A gas turbine or the like with an axial flow inlet compressor has a fogging system for introducing water droplets into the air inlet to the compressor. A compressor may exhibit a “surge” in the event air temperature drops rapidly, which may occur in the event introduction of fogging water droplets is essentially instantly discontinued. One or more pressure accumulators are connected to the water supply of the fog generating system so that in the event there is an interruption in the water supply the accumulator can provide a gradually decreasing water flow to the fog generator. The accumulator gradually decreases water flow for at least about one second. In a fog system having a plurality of fog generating manifolds, separate accumulators may be connected to each manifold.
Claims35
An anti-surge device comprising:
- an axial flow compressor;
- means for introducing water droplets into an inlet duct to the compressor comprising a plurality of nozzles, a pump supplying high pressure water to the nozzles, and conduit connecting the pump and nozzles;
- and
- elastic means for temporarily supplying sufficient water, in the event of shutdown of pumped water supply, to the nozzles with gradually decreasing flow for a sufficient time to avoid surge.
An anti-surge device comprising:
- an axial flow compressor;
- a fog generator for introducing water droplets into an inlet duct to the compressor;
- a reservoir containing sufficient water to gradually decrease flow, in the event of shutdown of a primary water supply to the fog generator, for a sufficient time to avoid surge;
- and
- means for supplying water from the reservoir to the fog generator in the event of shutdown of primary water supply.
An anti-surge device comprising:
- an axial flow compressor;
- means for introducing water droplets into an inlet duct to the compressor comprising a plurality of nozzle manifolds, and a pump supplying high pressure water to the manifolds;
- and
- an elastic water supply connected to each manifold.
A method for preventing surge in an axial flow compressor comprising:
- introducing water droplets to an air inlet duct to the compressor through a fog generator;
- storing water under pressure in a reservoir connected to the fog generator;
- and
- releasing water from the reservoir through the fog generator for a sufficient time to prevent surge of the compressor in the event other water supply to the nozzles is interrupted.
A method for preventing surge in an axial flow compressor comprising:
- introducing water droplets to an air inlet duct to the compressor through a fog generator connected to a primary water supply;
- storing water under pressure in a reservoir connected to the fog generator;
- and
- releasing water from the reservoir through the fog generator gradually over an interval of at least about one second in the event of interruption of the primary water supply.
A method for preventing surge in a gas turbine system including an axial flow compressor comprising:
- introducing water droplets to the compressor;
- storing water under pressure in a reservoir;
- releasing water from the reservoir in the form of droplets into the compressor in the event other water supply to the nozzles is interrupted;
- and
- gradually reducing flow of water droplets from the reservoir into the compressor.
A method for preventing surge in a gas turbine system including an axial flow compressor comprising:
- introducing water droplets to the compressor;
- storing water under pressure in a reservoir;
- and
- gradually releasing sufficient water from the reservoir in the form of droplets to the compressor to prevent surge of the turbine in the event other water supply to the nozzles is interrupted.
Dependencies are inferred from the claim text.