Gas turbine inlet air cooling device
By introducing natural gas pipelines and heat exchangers into the gas turbine intake system, the problem of reduced intake flow caused by high summer temperatures is solved by using low-temperature natural gas to cool the air. This achieves efficient cooling and increased output, while reducing NOx emissions and maintenance costs.
Patent Information
- Application Number
- CN202423200656.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2034-12-24
AI Technical Summary
High ambient temperatures in summer reduce the intake mass flow rate of gas turbines, resulting in lower power output, and existing technologies have not been able to effectively solve this problem.
Natural gas pipelines and heat exchangers are introduced into the gas turbine intake system. Low-temperature natural gas is used to cool the air through the heat exchanger before being delivered to the intake chamber. Combined with a filter screen to filter impurities, efficient cooling is achieved.
It increases the airflow in the intake chamber, improves the gas turbine output, reduces NOx emissions, maintains the power generation stability of the gas turbine, and reduces unit maintenance costs.
Smart Images
Figure CN223868079U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gas turbine technology, specifically to a gas turbine intake cooling device. Background Technology
[0002] High ambient temperatures in summer increase the specific volume of air, leading to a decrease in the mass flow rate of air drawn into the gas turbine compressor chamber and a reduction in turbine output. Since summer is often a peak period for electricity consumption, this creates a power shortage. Therefore, installing an intake air cooling device can improve the power generation capacity of combined cycle power plants during summer peak load periods, yielding significant social and economic benefits. Furthermore, intake air cooling can reduce NOx emissions, maintain the stability of gas turbine power generation, and reduce unit maintenance costs. Utility Model Content
[0003] The technical problem to be solved by this invention is how to efficiently cool the intake air of a gas turbine.
[0004] This utility model solves the above-mentioned technical problems through the following technical means:
[0005] A gas turbine intake air cooling device includes a natural gas pipeline (1), a heat exchanger (2), an intake chamber (3), and a cooling air inlet (5); the intake chamber (3) is provided with a cooling air inlet (5), the cooling air inlet (5) is connected to the heat exchanger (2), the heat exchanger (2) is installed on the natural gas pipeline (1), the natural gas pipeline (1) is supplied with low temperature natural gas, which can cool the air passing through the heat exchanger (2), and then the cooling air is transported to the intake chamber (3) through the pipeline and the cooling air inlet (5).
[0006] Beneficial effects: By setting up natural gas pipelines, heat exchangers, intake chambers, and cooling air inlets, the low-temperature natural gas introduced into the pipelines can cool the air passing through the heat exchanger. Then, the cooled air is delivered to the intake chamber through pipelines and cooling air inlets, reducing the air temperature in the compressor's intake chamber, thereby increasing airflow and increasing turbine output. Placing the heat exchanger outside the intake chamber can efficiently cool the compressor intake air without increasing the compressor's intake flow resistance, effectively increasing the airflow within the compressor and increasing turbine output.
[0007] Furthermore, the air inlet of the air intake chamber (3) is connected to the atmosphere, and the air outlet of the air intake chamber (3) is connected to the combustion chamber.
[0008] Furthermore, the air inlet of the air inlet chamber (3) is fixed with louvers (4).
[0009] Furthermore, a filter screen (6) is fixed inside the air inlet chamber (3) near the air outlet.
[0010] Beneficial effects: The filter screen helps to remove impurities from the air.
[0011] Furthermore, the heat exchanger (2) is a shell-and-tube heat exchanger.
[0012] Furthermore, the input end of the natural gas pipeline (1) is connected to a pressure regulating station.
[0013] Beneficial effects: The low-temperature natural gas comes from the pressure regulating station, which utilizes the low-temperature cold source of the natural gas in the pressure regulating station without increasing additional energy consumption, and at the same time reduces the heating energy of the natural gas in the pressure regulating station. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the gas turbine intake cooling device according to Embodiment 1 of this utility model. Detailed Implementation
[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0016] Example 1
[0017] like Figure 1 As shown, this embodiment provides a gas turbine intake cooling device, including a natural gas pipeline 1, a heat exchanger 2, an intake chamber 3, louvers 4, a cooling air inlet 5, and a filter 6.
[0018] like Figure 1As shown, the air inlet of the intake chamber 3 is connected to the atmosphere, and the air outlet of the intake chamber 3 is connected to the combustion chamber. From the side connected to the atmosphere to the other side, the intake chamber 3 is equipped with louvers 4, a cooling air inlet 5, and a filter 6. The louvers 4 are fixed to the air inlet of the intake chamber 3. The cooling air inlet 5 is connected to the heat exchanger 2, which is installed on the natural gas pipeline 1. Low-temperature natural gas is introduced into the natural gas pipeline 1 to cool the air passing through the heat exchanger 2. The cooled air then flows through the pipeline... Cooling air inlet 5 is delivered to the intake chamber 3, which reduces the air temperature in the compressor's intake chamber 3, thereby increasing the airflow and increasing the gas turbine output. In this embodiment, the heat exchanger 2 is a shell-and-tube heat exchanger (existing technology). In this embodiment, the low-temperature natural gas comes from the pressure regulating station, utilizing the low-temperature cold source of the natural gas from the pressure regulating station without increasing additional energy consumption, while reducing the heating energy of the natural gas from the pressure regulating station (which originally needed to be obtained from elsewhere). A filter screen 6 is fixed on the side of the intake chamber 3 near the outlet to filter impurities in the air.
[0019] like Figure 1 As shown, by placing the heat exchanger 2 outside the intake chamber 3, the intake air of the compressor can be cooled without increasing the airflow resistance of the compressor intake, which effectively increases the airflow in the compressor and increases the output of the gas turbine.
[0020] During use, a shell-and-tube heat exchanger is installed on the natural gas pipeline 1 of the pressure regulating station. The low-temperature natural gas is used to cool the air. The cooled air enters the compressor inlet chamber 3 through the pipeline and the cooling air inlet 5, which reduces the inlet air temperature of the compressor, thereby increasing the air flow and increasing the output of the gas turbine.
[0021] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A gas turbine inlet cooling device, characterized in that, Includes a natural gas pipeline (1), a heat exchanger (2), an air inlet chamber (3), and a cooling air inlet (5); The air intake chamber (3) is provided with a cooling air inlet (5), which is connected to a heat exchanger (2). The heat exchanger (2) is installed on a natural gas pipeline (1). Low-temperature natural gas is introduced into the natural gas pipeline (1) to cool the air passing through the heat exchanger (2). Then, the cooling air is transported to the air intake chamber (3) through the pipeline and the cooling air inlet (5).
2. The gas turbine inlet cooling device according to claim 1, characterized in that: The air inlet of the air intake chamber (3) is connected to the atmosphere, and the air outlet of the air intake chamber (3) is connected to the combustion chamber.
3. The gas turbine inlet cooling device according to claim 1, characterized in that: The air inlet of the air inlet chamber (3) is fixed with louvers (4).
4. The gas turbine inlet cooling device according to claim 1, characterized in that: A filter screen (6) is fixed inside the air inlet chamber (3) near the air outlet.
5. A gas turbine inlet cooling device according to claim 1, characterized in that: The heat exchanger (2) is a shell-and-tube heat exchanger.
6. A gas turbine inlet cooling device according to claim 1, characterized in that: The input end of the natural gas pipeline (1) is connected to a pressure regulating station.