Energy-saving air conditioning system for gas turbine plant

Abstract

The utility model relates to an energy-saving air conditioning system for a gas turbine plant, which comprises a steam type lithium bromide water chilling unit, a boiler and a steam heat accumulator, a steam supply pipeline is connected between the steam type lithium bromide water chilling unit and the steam heat accumulator, and a condensed water return pipeline is connected between the steam type lithium bromide water chilling unit and the boiler. The steam heat accumulator is connected with a steam heat accumulation pipeline, a steam pressurization pipeline is connected between the boiler and the steam heat accumulation pipeline, and the steam heat accumulation pipeline is provided with a gas pressure valve at the front end of the steam pressurization pipeline. According to the energy-saving air conditioning system for the gas turbine plant, redundant steam is stored by the steam heat accumulator when the gas turbine unit runs, and steam heat in the steam heat accumulator is released when the gas turbine unit does not run, so that steam supply is met under the low-power running condition of a boiler, comprehensive utilization of energy is achieved, and energy consumption of the air conditioning system is reduced.

Description

Technical Field

[0001] The utility model relates to an air conditioning system, in particular to an energy-saving air conditioning system for a gas turbine power plant. Background Art

[0002] The energy-saving air conditioning system for factory use adopts a main unit composed of a steam-type lithium bromide water chiller and an air-cooled screw water chiller. When the gas turbine unit is running normally, the gas turbine power plant can provide steam and cooling water for the air conditioning system. When the gas turbine unit is not running, the air conditioning system loses the steam source and cannot ensure the normal operation of the factory air conditioning system. It is necessary to separately establish a boiler and a circulation pump to serve the air conditioning system.

[0003] In the existing air conditioning system for a gas turbine power plant, the excess steam heat is wasted when the gas turbine unit is running. When the gas turbine unit is not running, using a boiler alone to supply steam consumes a large amount of energy and has low energy efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an energy-saving air conditioning system for a gas turbine power plant, which is used to solve the problems that the excess steam heat is wasted when the gas turbine unit of the existing air conditioning system for a gas turbine power plant is running, and the energy consumption is large and the energy efficiency is low when using a boiler alone to supply steam when the gas turbine unit is not running.

[0005] To solve the above problems, the utility model provides an energy-saving air conditioning system for a gas turbine power plant, which includes a steam-type lithium bromide water chiller, a boiler and a steam accumulator. A steam supply pipeline is connected between the steam-type lithium bromide water chiller and the steam accumulator, a condensate return pipeline is connected between the steam-type lithium bromide water chiller and the boiler, a steam heat storage pipeline is connected to the front end of the steam accumulator, a steam pressurization pipeline is connected between the boiler and the steam heat storage pipeline, and a gas pressure valve is arranged at the front end of the steam heat storage pipeline on the steam pressurization pipeline.

[0006] The energy-saving air conditioning system for a gas turbine power plant provided by the utility model also has the following technical features:

[0007] Further, a first valve is arranged on the condensate return pipeline at the front end of the boiler, and a return water pipe is arranged on the condensate return pipeline in front of the first valve.

[0008] Further, a circulation pump is arranged on the condensate return pipeline, and a second valve is arranged on the return water pipe.

[0009] Further, a pressurization pump is arranged on the steam pressurization pipeline, and a gas stop valve is arranged at the rear end of the pressurization pump.

[0010] Further, the steam supply pipeline, the steam heat storage pipeline and the steam pressurization pipeline are all pressure pipelines.

[0011] Further, the heat storage material of the steam accumulator is softened water.

[0012] Furthermore, a pressure regulating valve is provided on the steam supply pipeline.

[0013] The utility model has the following beneficial effects: The energy-saving air-conditioning system for the power plant of the gas turbine described in this application uses a steam accumulator to store excess steam during the operation of the gas turbine unit, and releases the steam heat in the steam accumulator when the gas turbine unit is not operating, so that the boiler can meet the steam supply under low-power operation conditions, achieving the comprehensive utilization of energy and reducing the energy consumption of the air-conditioning system. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the equipment distribution of the energy-saving air-conditioning system for the power plant of the gas turbine according to the embodiment of the utility model.

[0015] (1 - steam-fired lithium bromide water chiller, 2 - boiler, 3 - steam accumulator, 4 - steam supply pipeline, 5 - condensate return pipeline, 6 - steam storage pipeline, 7 - steam pressurization pipeline, 8 - gas pressure valve, 9 - first valve, 10 - return pipe, 11 - circulation pump, 12 - second valve, 13 - pressurization pump, 14 - gas stop valve, 15 - pressure regulating valve) Detailed Embodiment

[0016] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments. It should be noted that, without conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

[0017] As Figure 1 In the embodiment of the energy-saving air-conditioning system for the power plant of the gas turbine of the utility model shown in the figure, the energy-saving air-conditioning system for the power plant of the gas turbine includes a steam-fired lithium bromide water chiller 1, a boiler 2 and a steam accumulator 3. A steam supply pipeline 4 is connected between the steam-fired lithium bromide water chiller 1 and the steam accumulator 3. A condensate return pipeline 5 is connected between the steam-fired lithium bromide water chiller 1 and the boiler 2. A steam storage pipeline 6 is connected to the front end of the steam accumulator 3. A steam pressurization pipeline 7 is connected between the boiler 2 and the steam storage pipeline 6. A gas pressure valve 8 is provided at the front end of the steam storage pipeline 6 in the steam pressurization pipeline 7.

[0018] Specifically, when the gas turbine unit is in operation, steam enters the steam accumulator 3 through the steam heat storage pipeline 6 for storage and supply to the steam lithium bromide chiller 1; when the gas turbine unit is not in operation, the gas pressure valve 8 is closed, the boiler 2 is started, and the steam in the steam accumulator 3 enters the steam lithium bromide chiller 1 through the steam supply pipeline 4. The condensed water after circulating through the steam lithium bromide chiller 1 flows back to the boiler 2 through the condensate return pipeline 5, and after being heated by the boiler 2, it is then transported to the steam heat storage pipeline 6 and enters the steam accumulator 3. During this process, the boiler 2 only needs to operate at a low power to ensure the evaporation and heating of the condensate. The steam storage is completed through the steam accumulator 3, reducing the operating load of the boiler 2 and saving the energy consumption of the air conditioning system. It should be noted that the steam accumulator 3, the steam lithium bromide chiller 1, and the boiler 2 are all existing technical equipment and will not be elaborated here.

[0019] In an embodiment of the present application, preferably, a first valve 9 is provided on the condensate return pipeline 5 at the front end of the boiler 2, and a return water pipe 10 is provided on the condensate return pipeline 5 in front of the first valve 9, which is used to close the first valve 9 when the gas turbine unit is in operation, and the condensate in the condensate return pipeline 5 flows back to the gas turbine unit through the return water pipe 10.

[0020] In an embodiment of the present application, preferably, a circulation pump 11 is provided on the condensate return pipeline 5, and a second valve 12 is provided on the return water pipe 10, which is used to close the second valve 12 when the gas turbine unit is not in operation, so that the condensate enters the boiler 2.

[0021] In an embodiment of the present application, preferably, a pressure pump 13 is provided on the steam pressurization pipeline 7, and a gas stop valve 14 is provided at the rear end of the pressure pump 13, which is used to send the condensate steam heated by the boiler 2 into the steam accumulator 3 for storage.

[0022] In an embodiment of the present application, preferably, the steam supply pipeline 4, the steam heat storage pipeline 6, and the steam pressurization pipeline 7 are all pressure pipelines. When storing steam, it is in a high-pressure environment, and the pipelines need to bear a large pressure to ensure the normal operation of the system.

[0023] In an embodiment of the present application, preferably, the heat storage material of the steam accumulator 3 is softened water, and the gaseous and liquid conversions are carried out with water as the medium throughout the process, avoiding damage to the equipment caused by mineral salts.

[0024] In an embodiment of the present application, preferably, a pressure regulating valve 15 is provided on the steam supply pipeline 4, which is used to regulate the outlet pressure of the steam accumulator 3.

[0025] In summary, for the energy-saving air-conditioning system for the power plant of the gas turbine in the above embodiments of the present utility model, specifically, when the gas turbine unit operates, steam enters the steam accumulator 3 through the steam heat storage pipeline 6 for storage and supply to the steam lithium bromide chiller 1. The condensate after the supplied steam circulates through the steam lithium bromide chiller 1 is transported back to the gas turbine unit through the return pipe 10; when the gas turbine unit does not operate, the gas pressure valve 8 is closed, the boiler 2 is started, and the steam in the steam accumulator 3 enters the steam lithium bromide chiller 1 through the steam supply pipeline 4. The steam condensate after circulating through the steam lithium bromide chiller 1 flows back to the boiler 2 through the condensate return pipeline 5, and after being heated by the boiler 2, it is transported to the steam heat storage pipeline 6 through the pressure pump 13 and then enters the steam accumulator 3. During this process, the boiler 2 only needs to operate at a low power to ensure the evaporation and heating of the condensate. The steam storage is completed through the steam accumulator 3, reducing the operating load of the boiler 2 and saving the energy consumption of the air-conditioning system;

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present utility model.

Claims

1. An energy-saving air conditioning system for a gas turbine plant, characterized in that: It comprises a steam-type lithium bromide chiller, a boiler and a steam accumulator, wherein a steam supply pipeline is connected between the steam-type lithium bromide chiller and the steam accumulator, a condensate return pipeline is connected between the steam-type lithium bromide chiller and the boiler, a steam heat storage pipeline is connected to the front end of the steam accumulator, a steam pressurizing pipeline is connected between the boiler and the steam heat storage pipeline, and a gas pressure valve is provided at the front end of the steam pressurizing pipeline.

2. The energy-saving air conditioning system for gas turbine plants according to claim 1 is characterized in that: A first valve is provided on the condensate return pipe at the front end of the boiler, and a return pipe is provided on the condensate return pipe at the front end of the valve.

3. The energy-saving air conditioning system for gas turbine plants according to claim 2 is characterized in that: A circulation pump is provided on the condensate return pipeline, and a second valve is provided on the return pipe.

4. The energy-saving air conditioning system for gas turbine plants according to claim 3 is characterized in that: A pressurizing pump is arranged on the steam pressurizing pipeline, and a gas shut-off valve is arranged at the rear end of the pressurizing pump.

5. The energy-saving air conditioning system for gas turbine plants according to claim 4 is characterized in that: The steam supply pipeline, steam heat storage pipeline and steam pressurization pipeline are all pressure pipelines.

6. The energy-saving air conditioning system for gas turbine plants according to claim 5 is characterized in that: The heat storage material of the steam accumulator is softened water.

7. The energy-saving air conditioning system for gas turbine plants according to claim 6 is characterized in that: A pressure regulating valve is provided on the steam supply pipeline.

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