RU2369808C2 - Trigeneration gas turbine plant - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: proposed trigeneration gas turbine plant comprises low-pressure (1) and high-pressure (2) compressors, combustion chamber (3) and high-pressure (4) and low-pressure (5) turbines. Turbo-expander (8) and mechanical power consumer (9) share shaft (7) with power gas turbine (6). Turbo-expander (8) is coupled with cold consumer (10). Heat exchanger (12) is coupled low-pressure compressor (1), turbo-expander (8) and cold consumer (10). Power turbine (6) is coupled with heat consumer (11).

EFFECT: generation of mechanical power simultaneously with heat and cold that serves to expand performances.

1 dwg

Description

The invention relates to gas turbine units for mechanical drive, cooling and heating of objects (consumers).

Known air refrigeration machine (patent RU No. 2095701, F25B 9/00).

A disadvantage of the known design is the lack of the ability to perform additional functions, such as using a mechanical drive and generating heat at the same time.

Closest to the claimed design is a gas turbine engine with heat recovery, containing low and high pressure compressors, a combustion chamber, high and low pressure turbines, a power gas turbine and a heat exchanger (patent RU No. 2192551).

A disadvantage of the known design adopted as a prototype is the inability to simultaneously generate heat and cold when receiving mechanical energy.

The technical problem to be solved by the claimed invention is directed, lies in the technical ability to generate heat and cold while generating mechanical energy, which increases the functionality of the gas turbine unit.

The essence of the technical solution lies in the fact that in a triggering gas turbine installation containing low and high pressure compressors, a combustion chamber, high and low pressure turbines, a power gas turbine and a heat exchanger, according to the invention, a turboexpander and a mechanical consumer are located on one shaft with a gas power turbine energy, and the turbo-expander is connected to the consumer of cold, and the power turbine is connected to the heat consumer, while the heat exchanger is connected to the low-pressure compressor, to the turbo-expander om and with the consumer of cold.

The location of a turboexpander and a consumer of mechanical energy on the same shaft as the gas power turbine provides the transfer of energy from the power turbine through the shaft to the consumer of mechanical energy, while the connection of the turboexpander to the consumer of cold simultaneously with the generation of mechanical energy allows you to get cold by expanding the air coming from the turboexpander low pressure compressor, by cooling this air to a low temperature, which allows heat to be removed from the consumer of cold, from where then the spirit enters the heat exchanger to cool the air coming from the low-pressure compressor through the heat exchanger to the turboexpander.

The connection of the power turbine with the heat consumer allows the thermal energy of the exhaust gases after the power turbine to be used in heat supply systems, i.e. provide heat to the heat consumer.

The drawing shows a diagram of a trigeneration gas turbine installation.

Trigeneration gas turbine installation consists of a low pressure compressor 1, a high pressure compressor 2, a combustion chamber 3, a high pressure turbine 4, a low pressure turbine 5, a gas power turbine 6 on one shaft 7 with a turboexpander 8 and a consumer of mechanical energy 9, as well as a consumer cold 10, heat consumer 11 and heat exchanger 12. The low-pressure compressor 1 is connected to the inlet to the high-temperature region 13 of the heat exchanger 12. The output 14 of the power gas turbine 6 is connected to the heat consumer 11. The low temperature the region 16 of the heat exchanger 12 is connected to a turboexpander 8, which is connected to a consumer of cold 10, the outlet 15 of which is connected to the entrance to the low-temperature cavity 16 of the heat exchanger 12, the outlet from the cavity 13 is connected with the atmosphere.

The device operates as follows. Air enters the low-pressure compressor 1, where it is compressed and divided into two streams. Most of the air is additionally compressed in the high-pressure compressor 2 and supplied to the combustion chamber 3, where the combustion process takes place, and work is performed on high-pressure turbines 4, low pressure 5 and power turbine 6, from where energy is transmitted through shaft 7 to a mechanical energy consumer 9 From the output 14 of the power turbine 6, the combustion products enter the heat consumer 11. The second part of the air from the low pressure compressor 1 is supplied to the heat exchanger 12, where it is pre-cooled and fed to the turbo der 8, upon expansion of air in which its temperature is significantly reduced. From the turboexpander 8, air enters the cold consumer 10, then passes through the heat exchanger 12 and is discharged into the atmosphere. By expanding the air in the turboexpander 8 coming from the low pressure compressor 1, air is obtained that is cooled to a low temperature to cool the object.

Claims (1)

Trigeneration gas turbine installation comprising low and high pressure compressors, a combustion chamber, high and low pressure turbines, a power gas turbine and a heat exchanger, characterized in that a turboexpander and a consumer of mechanical energy are located on the same shaft as the gas power turbine, and the turboexpander is connected to a consumer of cold and the power turbine is connected to a heat consumer, while the heat exchanger is connected to a low-pressure compressor, to a turboexpander, and to a cold consumer.