RU98122426A

RU98122426A - METHOD AND DEVICE FOR INCREASING POWER IN GAS TURBINES BY WET COMPRESSION

Info

Publication number: RU98122426A
Application number: RU98122426/06A
Authority: RU
Inventors: Ричард Е. ЗАЧАРИ; Роджер Д. ХАДСОН; Джеймс Е. ГЕНРИ; Вильям Е. ЛАЙВЛИ
Original assignee: Дзе Дау Кемикал Компани
Priority date: 1996-05-14
Filing date: 1997-05-02
Publication date: 2001-03-20

Claims

1. The use of droplets of a liquid selected from alcohols, water and mixtures thereof in an air-containing working fluid supplied to the inlet of an axial multistage compressor of an industrial gas turbine to provide a long-term increase in the useful power of said turbine.

2. A method of increasing the useful power of an industrial gas turbine including an axial multistage compressor having an inlet for receiving a working fluid containing air, characterized in that droplets of a liquid selected from alcohols, water and mixtures thereof are added to the working fluid obtained axial compressor, in addition to what is required to humidify the incoming air, and for a period of time, more than what is required to periodically clean the accumulation of particles on the internal parts, whereby they increase the temperature of the working fluid caused by compression, thereby achieving an increase in the useful power of the turbine (measured relative to the useful power of a gas turbine under comparable conditions, but without supplying the indicated drops of liquid).

3. The method according to claim 2, characterized in that the mass flow rate of the liquid droplets initially with regulation is increased with respect to time at moderate thermal stresses inside the gas turbine, which are associated with the supply of liquid droplets to the working fluid, and then support essentially , constant mass flow rate for the remaining increase time period.

4. The method according to claim 2 or 3, characterized in that the liquid drops are composed of water.

5. The method according to any one of the preceding paragraphs, characterized in that it further comprises controlling the angular deformation of the compressor housing and regulating the supply of liquid droplets to limit deformation in predetermined tolerances.

6. The method according to any one of the preceding paragraphs, characterized in that the liquid droplets are fed into the compressor inlet in the form of a plurality of increments of the mass flow rate of the sprayed liquid, wherein the total mass flow rate of the increments is changed over time for a controlled increase in the amount of fluid supplied to the inlet .

7. The method according to any one of the preceding paragraphs, characterized in that the liquid droplets are water, and the number of these drops is sufficient to provide a working fluid, which in the inlet of the compressor contains at least three quarters of a percent of water in the form of an impurity to fully humidified air.

8. A device for increasing the useful power of an industrial gas turbine in increments, which includes an axial multistage compressor having an inlet for receiving a working fluid containing air, the device comprising means for supplying drops of a liquid selected from alcohols, water and their mixtures into the working fluid obtained by the axial compressor over a period of time, in the form of many increments of the mass flow rate of the sprayed liquid, and the tool is located at a sufficient distance from the compressor inlet, as a result of which, if during operation under load any part or part of the means for adding liquid droplets breaks away from the remaining part, then this part or part will be attracted by gravity to the lower surface of the inlet duct attached to the turbine body and preceding the compressor inlet, before it comes into contact with any part of the compressor itself.

9. A power plant comprising an industrial gas turbine, including an axial multistage compressor having an inlet for receiving a working fluid containing air, and a device according to claim 8 for introducing liquid droplets into the specified working fluid.

10. Installation according to claim 9, characterized in that the turbine is equipped with a separate means for evaporative cooling of the incoming air from the ambient air drawn into the turbine for passage through the compressor inlet to the compressor section and compression in this place.

11. A method of increasing the useful power of an industrial gas turbine, wherein the gas turbine includes an axial multistage compressor having an inlet for receiving an air-containing working fluid, comprising the step of feeding into the working fluid obtained by the axial compressor, in a linear increment or in a different way increment of the additive, drops of liquid, which has a high latent heat of vaporization, to reduce the temperature increase of the working fluid caused by compression, and thereby achieve velicheniya useful power of the gas turbine, measured relative to the useful power of the gas turbine, located under comparable conditions but without said liquid supply.

12. A power plant comprising an industrial gas turbine having an axial multistage compressor equipped with an inlet for receiving a working fluid containing air; means for supplying droplets of a liquid selected from alcohols, water and mixtures thereof into the working fluid obtained by the compressor; and means for measuring the angular deformation of the housing as liquid droplets are supplied to the working fluid.

13. A power plant comprising an industrial gas turbine, including an axial multistage compressor having an inlet for receiving a working fluid containing air, and means, both for evaporative cooling of the incoming air of the working fluid, and for correspondingly increasing the useful power of the gas turbine by spraying in sufficient quantities into the working fluid a liquid selected from alcohols, water and mixtures thereof, to achieve complete hydration of the working fluid, and also from Eren evaporative cooling steps on the border one or more compressor stages.