A gas turbine air intake filtration system

Abstract

The application discloses a gas turbine air intake filtering system and belongs to the technical field of power generation equipment. The system comprises, in sequence along an air intake direction, a rain cover, an insect screen, an adsorption drying device, a coarse filter, a fine filter and a spray cooling device, and constitutes a main air intake channel; and the system further comprises an adsorbent regeneration device which regenerates inactivated adsorbents by using exhaust smoke of a gas turbine waste heat boiler. Through the integrated design of "adsorption dehumidification-spray cooling-waste heat regeneration", the technical problems of high risk of wet blocking and output reduction of the air intake system of the gas turbine under a high-temperature and high-humidity environment are effectively solved, meanwhile, the operation energy consumption is reduced by using the waste heat of the system itself, and the overall economy and operation stability are improved.

Description

Technical Field

[0001] This invention belongs to the field of power generation equipment technology, and specifically relates to a gas turbine intake air filtration system. Background Technology

[0002] Gas turbines, with their advantages of high power density, high efficiency, and flexible start-stop, are hailed as the "crown jewel" of the equipment manufacturing industry. However, their operation is extremely sensitive to the quality of the intake air. Especially in regions like the southeastern coast of my country, the high temperature and humidity in summer pose two major challenges to gas turbine operation: first, high humidity air easily condenses on the intake filter and other components, leading to the risk of "wet blockage" and seriously affecting operational safety; second, high-temperature intake air can cause a decrease in gas turbine output.

[0003] Currently, gas turbine intake systems typically include rain covers, insect screens, and multi-stage filtration systems, which can block liquid water and particulate matter to a certain extent. However, traditional rain covers are ineffective against gaseous water (humidity) in the ambient air. If a separate adsorption-type drying device is used for dehumidification, it requires a large amount of plant power for adsorbent regeneration (such as electric heating regeneration), which is not economical.

[0004] In addition, although spray cooling is an effective technology for reducing intake air temperature and increasing output, its evaporative cooling effect is limited in high humidity environments and may exacerbate humidity problems, thus limiting its application.

[0005] Therefore, existing technologies lack an integrated system solution that can simultaneously, efficiently, and economically address the problems of intake blockage and power output reduction in gas turbines under high temperature and high humidity environments. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a gas turbine intake air filtration system to solve the technical problems of high risk of wet blockage and high regeneration cost faced by the intake system when the gas turbine is running in a high temperature and high humidity environment.

[0007] To achieve the above objectives / to solve the above technical problems, the present invention is implemented using the following technical solution:

[0008] In a first aspect, the present invention provides a gas turbine inlet air filtration system, comprising:

[0009] The intake drying line is used to introduce air into the gas turbine;

[0010] An adsorption-type drying device is connected in series in the air intake drying pipeline to remove moisture from the air entering the air intake drying pipeline.

[0011] The adsorbent regeneration device has its inlet end connected to the exhaust end of the waste heat boiler of the gas turbine, and its outlet end connected in series with the adsorption drying device through the adsorbent regeneration pipeline. It is used to regenerate the saturated and deactivated adsorbent in the adsorption drying device by utilizing the exhaust gas of the waste heat boiler of the gas turbine.

[0012] The adsorbent regeneration pipeline is connected at one end to the air outlet of the adsorbent regeneration device, and at the other end in series to the adsorption drying device and then to the air outlet.

[0013] The above-mentioned setup achieves the following effects: By incorporating an adsorption-type drying device connected in series in the intake drying pipeline, this invention effectively removes moisture from the air entering the gas turbine, thereby avoiding the adverse effects of high humidity air on the gas turbine's combustion efficiency and blade life. Simultaneously, by setting up an adsorbent regeneration device and connecting its intake end to the exhaust end of the gas turbine's waste heat boiler, the invention creatively utilizes the waste heat generated during the gas turbine's operation to regenerate the deactivated adsorbent. This eliminates the need for additional electrical energy consumption for heating and regeneration, achieving waste heat recycling, significantly reducing system operating energy consumption, and substantially improving overall energy efficiency and economy. It solves the technical problem of high adsorbent regeneration energy consumption in existing technologies. Furthermore, this device can reduce the risk of ice blockage in the gas turbine's intake filter under low temperature and high humidity conditions.

[0014] Furthermore, the adsorption drying device is a self-switching adsorption drying device, comprising:

[0015] Controller;

[0016] A first adsorbent placement chamber and a second adsorbent placement chamber are arranged side by side; both the first and second adsorbent placement chambers are used to place adsorbent; both the first and second adsorbent placement chambers are provided with two air vents that are arranged opposite each other;

[0017] Outside air is introduced into the first or second adsorbent storage chamber via the air intake drying pipe, and after being dehumidified by the adsorbent in the storage chamber, it enters the gas turbine; the hot air output from the adsorbent regeneration device is introduced into the first or second adsorbent storage chamber via the adsorbent regeneration pipe, thereby regenerating the deactivated adsorbent in the first or second adsorbent storage chamber.

[0018] as well as,

[0019] A switching device is used to connect the first adsorbent placement chamber and the air inlet drying pipeline in series, or connect the second adsorbent placement chamber and the adsorbent regeneration pipeline in series, or connect the first adsorbent placement chamber and the adsorbent regeneration pipeline in series, and connect the second adsorbent placement chamber and the air inlet drying pipeline in series, according to the instructions of the controller.

[0020] The above configuration achieves the following effects: By setting up a first and second adsorbent placement chamber arranged side-by-side and configuring a switching device to switch the gas paths of the two chambers according to controller commands, this invention realizes a self-switching function for alternating operation and regeneration of the two chambers. When the adsorbent in one chamber gradually becomes saturated and deactivated during operation, the controller can switch that chamber to the adsorbent regeneration pipeline for hot air regeneration via the switching device, while simultaneously switching the other chamber, which has completed regeneration, to the intake air drying pipeline to continue dehumidification. This configuration ensures that the entire system can continuously and uninterruptedly provide dry intake air to the gas turbine, avoiding downtime for replacement or dehumidification failure due to adsorbent saturation, and significantly improving the system's operational reliability and automation level.

[0021] Furthermore, the switching device includes a power supply, a relay, a first electrically controlled valve, and a second electrically controlled valve;

[0022] The first and second solenoid valves are each provided with a first position and a second position, as well as ports P, A, B, and T. When in the first position, ports P and A are connected, and ports B and T are connected; when in the second position, ports P and B are connected, and ports A and T are connected.

[0023] The power supply, relay, the control terminal of the first solenoid valve, and the control terminal of the second solenoid valve are connected in series to form a circuit;

[0024] The controller is connected to the relay to control the switching of the first and second electrically controlled valves between the first and second positions;

[0025] Port A of the first electrically controlled valve is connected to one vent of the first adsorbent placement chamber; the other vent of the first adsorbent placement chamber is connected to port P of the second electrically controlled valve.

[0026] Port B of the first electrically controlled valve is connected to one vent of the second adsorbent placement chamber; the other vent of the second adsorbent placement chamber is connected to port T of the second electrically controlled valve.

[0027] The P port of the first solenoid valve is connected to the intake drying pipeline; the A port of the second solenoid valve is connected to the intake drying pipeline; the switching device is connected to the intake drying pipeline in series through the P port of the first solenoid valve and the A port of the second solenoid valve.

[0028] The T port of the first electrically controlled valve is connected to the adsorbent regeneration pipeline; the B port of the second electrically controlled valve is connected to the adsorbent regeneration pipeline; the switching device is connected in series to the air intake drying pipeline through the T port of the first electrically controlled valve and the B port of the second electrically controlled valve.

[0029] The system has a first working state and a second working state;

[0030] In the first working state, the controller controls the relay to de-energize the circuit, and both the first and second solenoid valves are in the first position, so that the first adsorbent placement chamber is connected in series in the air intake drying pipeline, and the adsorbent inside is used to dehumidify the air in the air intake drying pipeline. The second adsorbent placement chamber is connected in series in the adsorbent regeneration pipeline, and the hot air introduced through the adsorbent regeneration pipeline regenerates the adsorbent therein.

[0031] In the second operating state, the controller controls the relay to energize the circuit, and both the first and second solenoid valves are energized and switched to the second position, so that the second adsorbent placement chamber is connected in series in the air intake drying pipeline, and the adsorbent inside is used to dehumidify the air in the air intake drying pipeline. The first adsorbent placement chamber is connected in series in the adsorbent regeneration pipeline, and the hot air introduced through the adsorbent regeneration pipeline regenerates the adsorbent therein.

[0032] The above setup achieves the following effect: This invention achieves precise switching of the gas path through the coordinated operation of two electrically controlled valves. The specific connection method of this switching device has extremely high reliability and anti-cross-flow capability.

[0033] When the system starts working, the controller controls the relay to de-energize the circuit, and the system is in the first working state. This de-energizes both the first and second solenoid valves, putting them in the first position. This causes the first adsorbent placement chamber to be connected in series in the air intake drying pipeline, where the adsorbent is used to dehumidify the air in the air intake drying pipeline. The second adsorbent placement chamber is connected in series in the adsorbent regeneration pipeline, where hot air introduced through the adsorbent regeneration pipeline regenerates the adsorbent.

[0034] When it is necessary to regenerate the adsorbent in the adsorbent placement chamber of the intake air drying pipeline, the controller controls the relay to energize the circuit, and the system enters the second working state. This energizes both the first and second solenoid valves, placing them in the second position. This allows the second adsorbent placement chamber to be connected in series in the intake air drying pipeline, where the adsorbent is used to dehumidify the air in the intake air drying pipeline. The first adsorbent placement chamber is connected in series in the adsorbent regeneration pipeline, where hot air introduced through the adsorbent regeneration pipeline regenerates the adsorbent. This achieves the switching of the gas pipelines containing the first and second adsorbent placement chambers.

[0035] The controller achieves synchronous switching of the two electrically controlled valves by controlling the relay to de-energize or energize the circuit, making the control method simple and reliable. Since the two placement chambers are physically isolated in the inlet drying pipeline and adsorbent regeneration pipeline via two electrically controlled valves, the working gas path and regeneration gas path will never cross-connect under any circumstances, eliminating the risk of cross-contamination at its source.

[0036] Furthermore, a first humidity detection device and a second humidity detection device are respectively provided before and after the adsorption drying device; both the first humidity detection device and the second humidity detection device are connected to the controller.

[0037] When the humidity value detected by the second humidity detection device is greater than the preset threshold and the difference between the humidity value detected by the first humidity detection device and the humidity value detected by the second humidity detection device is less than the preset difference, the controller sends a replacement signal to drive the adsorbent placement chamber containing saturated adsorbent to switch to the adsorbent regeneration pipeline, and switches the adsorbent placement chamber containing regenerated adsorbent to the air intake drying pipeline.

[0038] The above setup achieves the following effect: humidity detection devices are installed before and after the adsorption drying device. When the rear humidity detection device detects that the relative humidity is below 40%, the adsorption drying device maintains normal operation.

[0039] When the humidity detected by the post-detection device is greater than 40%, and the humidity detected by the pre-detection device is 20% higher than that of the post-detection device, the adsorption drying device sends a switching signal.

[0040] After receiving a switching signal, the adsorption dryer will automatically switch to the inlet drying pipeline with the regenerated adsorbent, and the saturated adsorbent will automatically switch to the adsorbent regeneration pipeline for regeneration.

[0041] This intelligent control logic enables on-demand regeneration of the adsorbent without human intervention, ensuring that the system can respond promptly when the adsorbent performance declines, maintaining a stable dehumidification effect, and further improving the system's automation level and operational reliability.

[0042] Furthermore, the adsorbent regeneration device includes a tube-wall heat exchanger;

[0043] One end of the tube wall heat exchanger is connected to the flue gas end of the waste heat boiler via a pump and a butterfly valve, and the other end is connected to the adsorption drying device via an adsorbent regeneration pipeline.

[0044] The flue gas from the waste heat boiler flows through the tube wall heat exchanger to heat the air, and the heated air is used to regenerate the deactivated adsorbent in the adsorption dryer.

[0045] The above setup achieves the following effects: This invention uses a tube-wall heat exchanger as the core component of the adsorbent regeneration device. High-temperature flue gas from the waste heat boiler is introduced into the heat exchanger via a pump and butterfly valve. The heat from the flue gas heats the clean air on the other side of the heat exchanger tube wall. The heated hot air is then introduced into the adsorbent storage chamber through the adsorbent regeneration pipeline to heat, desorb, and regenerate the deactivated adsorbent. Because heat exchange occurs indirectly between the flue gas and the regeneration gas path through the tube wall, the flue gas itself does not directly contact the adsorbent. This avoids secondary pollution of the adsorbent by acidic gases, dust, and other impurities that may be present in the flue gas, ensuring the adsorption performance and service life of the regenerated adsorbent.

[0046] Furthermore, the gas turbine's air intake passage is sequentially equipped with a rain cover, an insect net, the adsorption drying device, a coarse filter, and a fine filter along the air intake direction.

[0047] The above setup achieves the following effects: This invention forms a graded, progressive air intake treatment system by sequentially arranging a rain cover, insect net, adsorption dryer, coarse filter, and fine filter along the air intake direction. The rain cover prevents rainwater and larger water droplets from entering the air intake channel, avoiding direct impact of large amounts of liquid water on subsequent equipment; the insect net prevents larger debris such as flying insects, willow catkins, and leaves from entering the system; the adsorption dryer removes gaseous water (water vapor) from the air, reducing the relative humidity; the coarse filter intercepts large dust and sand particles in the air; and the fine filter filters out fine particles, ensuring that the air entering the gas turbine meets high cleanliness requirements. The treatment units are arranged in an orderly manner from coarse to fine and from outside to inside, according to the pollutant particle size and working principle. This fully utilizes the efficiency of each treatment unit, reduces the burden on the subsequent fine filter through pre-treatment, extends the service life of the fine filter, and comprehensively improves the intake air quality.

[0048] Furthermore, the air intake channel between the coarse filter and the fine filter is Z-shaped, with two 90° turns, and a dirt storage space is formed in the lower part of the channel behind the coarse filter.

[0049] The effects achieved by the above configuration are as follows: The air intake channel between the coarse filter and the fine filter is set in a Z-shape with two 90° turns. By utilizing the principle of inertial separation of airflow at the turns, large dust particles and impurities carried in the air are separated from the airflow due to centrifugal force when turning, and then settle into the dirt storage space at the bottom of the channel behind the coarse filter under the action of gravity. This reduces the filtration load of the fine filter, extends the replacement cycle and maintenance interval of the fine filter, and reduces the resistance loss of the system operation.

[0050] Furthermore, both the first and second electrically controlled valves are electrically controlled two-position four-way valves.

[0051] Furthermore, the sludge storage space is a sludge drain pit located behind the coarse filter.

[0052] The above setup achieves the following effects: The present invention specifically designates the waste storage space as a wastewater discharge pit, which has a simple structure and is easy to manufacture and maintain. Dust and impurities deposited in the wastewater discharge pit can be discharged through periodic manual cleaning or vacuum suction, avoiding secondary pollution caused by excessive accumulation being re-entrained by airflow. This ensures the long-term effective pre-separation effect of the Z-shaped flow channel and reduces the system's maintenance difficulty.

[0053] Furthermore, it also includes a cleaning device, which is installed on the air inlet side of the fine filter and is used to periodically clean the fine filter.

[0054] The above setup achieves the following effects: The cleaning device periodically removes accumulated dust from the surface of the fine filter, restoring its flow capacity and preventing a sharp increase in pressure loss due to rapid dust accumulation. This ensures filtration accuracy while maintaining smooth airflow and reducing fan energy consumption. The cleaning device periodically cleans the fine filter, allowing contaminant particles to fall vertically into the bottom drain pit.

[0055] Furthermore, the system also includes a spray cooling device disposed on the outlet side of the fine filter.

[0056] The above setup achieves the following effects: the spray cooling device can cool the air by spraying liquids such as alcohol. By combining dehumidification with spray cooling, the dehumidified air is then cooled further, improving the evaporative cooling effect and thus increasing the output of the gas turbine during high-temperature seasons. Simultaneously, since the air has already passed through the adsorption drying device, it will not cause "wet blockage," reducing the risk of "wet blockage" at its source. The synergy of these two methods overcomes the limitations of applying a single technology in high-humidity environments.

[0057] Furthermore, a temperature detection device is provided on the air inlet side of the spray cooling device; when the temperature detected by the temperature detection device is higher than the high temperature threshold, the spray cooling device is activated.

[0058] The above settings achieve the following effects: The system enables on-demand activation and precise control of the cooling function. The temperature detection device monitors the intake air temperature in real time, and only activates spray cooling when the temperature exceeds a high-temperature threshold (e.g., 35°C). This avoids energy waste and water consumption at low temperatures or when cooling is not required, making the system more economical and intelligent.

[0059] Furthermore, the spray cooling device includes multiple spray nozzles, which are arranged at intervals in an equilateral triangle pattern.

[0060] The above setup achieves the following effect: the spray nozzles are arranged evenly in an equilateral triangle pattern, which can form a uniformly covered mist field without dead zones on the air intake section, ensuring sufficient and uniform heat and moisture exchange with the air, thereby maximizing evaporative cooling efficiency and improving the consistency of cooling effect.

[0061] Furthermore, the system also includes a backup air inlet pipeline connected in parallel at both ends of the adsorption drying device; the backup air inlet pipeline is equipped with an electrically controlled air valve for controlling the on / off state of the pipeline; the electrically controlled air valve is connected to the controller.

[0062] Both the first and second electrically controlled valves are electrically controlled three-position four-way valves. Both the first and second electrically controlled valves have a third position. When in the third position, both the first and second electrically controlled valves close the gas path.

[0063] When the temperature detected by the temperature detection device is higher than the low temperature threshold and lower than the high temperature threshold, the controller controls the electric control valve to open and both the first and second electric control valves are in the third position. At this time, the backup air intake pipeline is opened and both the first and second electric control valves close the air path.

[0064] Otherwise, the controller closes the electronically controlled air valve and neither the first nor the second electronically controlled valve is in the third position, at which point the backup air intake line is closed.

[0065] The above setup achieves the following effect: A temperature detection device is installed in front of the spray device. When the temperature is between the low temperature threshold and the high temperature threshold, there is no need for cooling or risk of ice blockage in the fine filter. The backup air intake pipeline will be activated, and the adsorption drying device will be switched to an idle position. At this time, the adsorption drying device does not work, reducing losses.

[0066] When the temperature is below the low temperature threshold, in order to reduce the risk of gas turbine intake ice blockage under low temperature and high humidity conditions, an adsorption dryer is activated for dehumidification.

[0067] When the temperature exceeds the high temperature threshold, the adsorption drying device is activated to dehumidify. The adsorption drying device starts working to reduce the air humidity and assists the subsequent spray cooling process to improve the cooling effect.

[0068] Furthermore, when the temperature of the spray cooling device is greater than 35°C, the cooling water volume of the spray is turned on, and the cooling water volume is 50% of the maximum water volume. As the ambient temperature increases, the cooling water volume gradually increases, and when the ambient temperature reaches 40°C, the cooling water volume reaches the maximum spray volume.

[0069] like Figure 1As shown, air enters the compressor through the intake drying pipeline and is compressed. The compressor is driven by an electric motor. Then, the air enters the combustion chamber through the combustion chamber gas inlet, and then enters the gas turbine. The exhaust gas from the gas turbine enters the waste heat boiler. After heat exchange with the waste heat boiler heat exchange device, the exhaust gas enters the tube wall heat exchanger through the pump and butterfly valve, and finally is discharged into the atmosphere.

[0070] Meanwhile, the air is heated by a tube-wall heat exchanger, and then the heated air enters an automatically replaceable adsorption dryer through an adsorbent regeneration pipeline to regenerate the deactivated adsorption dryer. Finally, the air is discharged into the atmosphere through the air outlet.

[0071] In this embodiment, the exhaust gas from the waste heat boiler is controlled by a pump and a butterfly valve. When the adsorption dryer does not need to be regenerated in dry weather, the pump and butterfly valve are closed. When the deactivated adsorption dryer needs to be regenerated, they are opened and the tube wall heat exchanger is started.

[0072] like Figure 2 As shown, in the gas turbine intake flow structure, air passes sequentially through a rain cover, an insect screen, an adsorbent, a coarse filter, a fine filter, and a spray cooling device before finally entering the gas turbine compressor.

[0073] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0074] 1. Energy recycling and good operating economy: This invention creatively utilizes the exhaust heat of the gas turbine's own waste heat boiler to heat air through a heat exchanger to regenerate the deactivated adsorbent, replacing the traditional electric heating regeneration method. This significantly reduces the system's operating energy consumption and improves the overall energy utilization efficiency and economy.

[0075] 2. Integrated dehumidification and cooling for high overall efficiency: By connecting an adsorption-type dryer and a spray cooling device in series in the main intake channel, this invention first reduces the humidity of the intake air, thereby reducing the risk of "wet blockage" at the source. Then, it specifically sprays and cools the dried air to lower the temperature, thus improving the output of the gas turbine during high-temperature seasons. The synergy of these two technologies overcomes the limitations of applying a single technology in high-humidity environments.

[0076] 3. Reasonable structural design and convenient maintenance: The Z-shaped flow channel design, combined with the dirt storage space after coarse filtration (such as a sewage pit) and the cleaning device before fine filtration, is conducive to the settling and collection of large particulate pollutants at the bends. At the same time, it is easy to clean the fine filter, reducing the frequency and difficulty of maintenance and maintaining the long-term efficient operation of the system.

[0077] 4. High degree of automation and stable operation: Through the linkage between humidity and temperature detection devices and controller, the system realizes saturation judgment and automatic switching regeneration of adsorption drying device, as well as intelligent start and stop of spray cooling device, ensuring that the system can automatically optimize operation under different environmental conditions and guarantee the stable and efficient operation of gas turbine.

[0078] 5. This invention proposes an "adsorption drying device + spray cooling device" to cool the gas turbine intake air under high temperature and high humidity conditions and improve the gas turbine output. At the same time, it uses the waste heat of the waste heat boiler to regenerate the deactivated adsorption drying device, thereby reducing the energy consumption required for the regeneration of conventional adsorption drying devices. In addition, this device can also reduce the risk of ice blockage of the gas turbine intake filter element under low temperature and high humidity conditions. Attached Figure Description

[0079] Figure 1 This is a system diagram of a gas turbine in one embodiment of the present invention;

[0080] Figure 2 This is a schematic diagram of the gas turbine intake flow path structure in one embodiment of the present invention;

[0081] Figure 3 This invention relates to a control method for an adsorption drying device based on temperature and humidity.

[0082] Figure 4 This is a schematic diagram illustrating the variation of cooling water volume with ambient temperature according to the present invention.

[0083] Figure 5 This is a schematic diagram of the gas path control of the self-switching adsorption drying device of the present invention.

[0084] In the diagram: 1. Inlet drying pipeline; 2. Adsorption drying device; 3. Electric motor; 4. Compressor; 5. Combustion chamber gas inlet; 6. Combustion chamber; 7. Turbine; 8. Waste heat boiler; 9. Pump; 10. Butterfly valve; 11. Waste heat boiler heat exchange device; 12. Tube wall heat exchanger; 13. Adsorbent regeneration pipeline; 14. Rain cover; 15. Insect net; 16. First humidity detection device; 17. Adsorbent; 18. Second humidity detection device; 19. Coarse filter; 20. Sewage pit; 21. Cleaning device; 22. Fine filter; 23. Temperature detection device; 24. Spray cooling device; 25. Spray nozzle.

[0085] 201. Controller; 202. First adsorbent placement chamber; 203. Second adsorbent placement chamber; 204. First solenoid valve; 205. Second solenoid valve; 206. Relay; 207. Power supply. Detailed Implementation

[0086] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0087] In the description of this embodiment, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this embodiment.

[0088] Example 1:

[0089] like Figure 1 As shown, the present invention provides a gas turbine intake air filtration system, including an intake air drying pipeline 1, an adsorption drying device 2, an adsorbent regeneration device, and an adsorbent regeneration pipeline 13.

[0090] The intake drying line 1 is used to introduce air into the gas turbine.

[0091] An adsorption-type drying device 2 is connected in series in the air intake drying pipeline 1 to remove moisture from the air entering the air intake drying pipeline 1.

[0092] The inlet of the adsorbent regeneration device is connected to the exhaust end of the waste heat boiler 8 of the gas turbine, and the outlet is connected in series with the adsorption drying device 2 through the adsorbent regeneration pipeline 13. This device is used to regenerate the saturated and deactivated adsorbent 17 in the adsorption drying device 2 using the exhaust of the waste heat boiler 8 of the gas turbine.

[0093] One end of the adsorbent regeneration pipeline 13 is connected to the air outlet of the adsorbent regeneration device, and the other end is connected in series to the adsorption drying device 2 and then to the air outlet.

[0094] Air enters the adsorption dryer 2 through the intake drying pipe 1 for dehumidification and then enters the gas turbine; the exhaust gas from the waste heat boiler 8 enters the adsorbent regeneration device to heat the air, and the heated air enters the adsorption dryer 2 through the adsorbent regeneration pipe 13 to regenerate the deactivated adsorbent 17 with hot air. The regenerated exhaust gas is discharged through the air outlet.

[0095] like Figure 1As shown, in this embodiment, air enters the compressor 4 through the intake drying pipeline 1 and is compressed. The compressor 4 is driven by the electric motor 3. Air then enters the combustion chamber 6 through the combustion chamber gas inlet 5, and then enters the gas turbine 7. The exhaust gas from the gas turbine 7 enters the waste heat boiler 8. After heat exchange with the waste heat boiler heat exchange device 11, the exhaust gas enters the tube wall heat exchanger 12 (i.e., the adsorbent regeneration device) through the pump 9 and butterfly valve 10, and is finally discharged into the atmosphere. Simultaneously, the air is heated through the tube wall heat exchanger 12, and then the heated air enters the automatically switchable adsorption drying device 2 through the adsorbent regeneration pipeline 13 to regenerate the deactivated adsorbent 17. Finally, the air is discharged into the atmosphere through the air outlet.

[0096] Implementation principle: By setting up an adsorption drying device 2 connected in series in the intake drying pipeline 1, the present invention can effectively remove moisture from the air entering the gas turbine, thereby avoiding the adverse effects of high humidity air on the combustion efficiency and blade life of the gas turbine.

[0097] Meanwhile, by setting up an adsorbent regeneration device and connecting its inlet end to the exhaust end of the gas turbine waste heat boiler 8, the waste heat generated by the gas turbine itself during operation is creatively utilized to regenerate the deactivated adsorbent 17. No additional electricity is required for heating and regeneration, realizing the recycling of waste heat, significantly reducing the system's operating energy consumption, and significantly improving the overall energy utilization efficiency and economy. This solves the technical problem of high energy consumption for adsorbent 17 regeneration in the prior art. At the same time, this device can also reduce the risk of ice blockage in the gas turbine inlet filter under low temperature and high humidity conditions.

[0098] Example 2

[0099] like Figure 5 As shown, this embodiment further explains the specific structure of the adsorption drying device 2 based on embodiment 1.

[0100] The adsorption drying device 2 is a self-switching adsorption drying device 2, including a controller 201, a first adsorbent placement chamber 202 and a second adsorbent placement chamber 203 arranged side by side, and a switching device.

[0101] Both the first adsorbent placement chamber 202 and the second adsorbent placement chamber 203 are used to place adsorbent 17. Both the first adsorbent placement chamber 202 and the second adsorbent placement chamber 203 are provided with two oppositely arranged air vents, i.e., each placement chamber has an air inlet and an air outlet, allowing airflow to pass through and fully contact the adsorbent 17 inside the chamber. The adsorbent 17 can be a porous adsorbent material such as activated alumina, molecular sieves, or silica gel.

[0102] Outside air is introduced into the first adsorbent storage chamber 202 or the second adsorbent storage chamber 203 through the intake drying pipe 1, and then dehumidified by the adsorbent 17 in the storage chamber before entering the gas turbine. Hot air output from the adsorbent regeneration device is introduced into the first adsorbent storage chamber 202 or the second adsorbent storage chamber 203 through the adsorbent regeneration pipe 13, thereby regenerating the deactivated adsorbent 17 in the first adsorbent storage chamber 202 or the second adsorbent storage chamber 203.

[0103] The switching device is used to connect the first adsorbent placement chamber 202 and the inlet drying pipeline 1 in series, and the second adsorbent placement chamber 203 and the adsorbent regeneration pipeline 13 in series, or connect the first adsorbent placement chamber 202 and the adsorbent regeneration pipeline 13 in series, and the second adsorbent placement chamber 203 and the inlet drying pipeline 1 in series, according to the instructions of the controller 201. This enables the alternating switching of the two placement chambers between the working gas path and the regeneration gas path.

[0104] Specifically, such as Figure 5 As shown, the switching device includes a power supply 207, a relay 206, a first solenoid valve 204, and a second solenoid valve 205. In this embodiment, both the first solenoid valve 204 and the second solenoid valve 205 are electrically controlled two-position four-way valves.

[0105] The first solenoid valve 204 and the second solenoid valve 205 are each provided with a first position and a second position, as well as ports P, A, B and T. When in the first position, ports P and A are connected, and ports B and T are connected; when in the second position, ports P and B are connected, and ports A and T are connected.

[0106] Power supply 207, relay 206, the control terminals of the first solenoid valve 204 and the second solenoid valve 205 are connected in series to form a circuit. Power supply 207 supplies power to relay 206, the first solenoid valve 204 and the second solenoid valve 205. Controller 201 is connected to relay 206 to control the switching of the first solenoid valve 204 and the second solenoid valve 205 between the first and second positions.

[0107] Port A of the first solenoid valve 204 is connected to one vent of the first adsorbent placement chamber 202; the other vent of the first adsorbent placement chamber 202 is connected to port P of the second solenoid valve 205.

[0108] The B port of the first solenoid valve 204 is connected to one vent of the second adsorbent placement chamber 203; the other vent of the second adsorbent placement chamber 203 is connected to the T port of the second solenoid valve 205.

[0109] The P port of the first solenoid valve 204 is connected to the intake drying pipeline 1; the A port of the second solenoid valve 205 is connected to the intake drying pipeline 1. The switching device is connected to the intake drying pipeline 1 in series through the P port of the first solenoid valve 204 and the A port of the second solenoid valve 205.

[0110] The T port of the first solenoid valve 204 is connected to the adsorbent regeneration pipeline 13; the B port of the second solenoid valve 205 is also connected to the adsorbent regeneration pipeline 13. The switching device is connected in series to the adsorbent regeneration pipeline 13 via the T port of the first solenoid valve 204 and the B port of the second solenoid valve 205.

[0111] The system has a first operating state and a second operating state.

[0112] In the first working state, the controller 201 controls the relay 206 to de-energize the circuit, and the first solenoid valve 204 and the second solenoid valve 205 are both in the first position, so that the first adsorbent placement chamber 202 is connected in series in the air intake drying pipeline 1, and the adsorbent 17 in it is used to dehumidify the air in the air intake drying pipeline 1. The second adsorbent placement chamber 203 is connected in series in the adsorbent regeneration pipeline 13, and the hot air introduced through the adsorbent regeneration pipeline 13 regenerates the adsorbent 17 therein.

[0113] Specifically, in the first operating state, the P port of the first electrically controlled valve 204 is connected to the A port, and the B port is connected to the T port; the P port of the second electrically controlled valve 205 is connected to the A port, and the B port is connected to the T port. The working gas path is as follows: outside air flows into the P port of the first electrically controlled valve 204 through the intake drying pipe 1, enters the first adsorbent placement chamber 202 through the A port for adsorption and dehumidification, flows out of the first adsorbent placement chamber 202 and enters the P port of the second electrically controlled valve 205, flows out through the A port to the downstream of the intake drying pipe 1, and finally enters the gas turbine. The regeneration gas path is as follows: hot air output from the adsorbent regeneration device flows into the T port of the first electrically controlled valve 204 through the adsorbent regeneration pipe 13, enters the second adsorbent placement chamber 203 through the B port to heat and regenerate the deactivated adsorbent 17, flows out of the second adsorbent placement chamber 203 and enters the T port of the second electrically controlled valve 205, flows out through the B port to the downstream of the adsorbent regeneration pipe 13, and finally exits through the air outlet.

[0114] In the second working state, the controller 201 controls the relay 206 to energize the circuit, and both the first solenoid valve 204 and the second solenoid valve 205 are energized and switched to the second position, so that the second adsorbent placement chamber 203 is connected in series in the air intake drying pipeline 1, and the adsorbent 17 inside is used to dehumidify the air in the air intake drying pipeline 1. The first adsorbent placement chamber 202 is connected in series in the adsorbent regeneration pipeline 13, and the hot air introduced through the adsorbent regeneration pipeline 13 regenerates the adsorbent 17 therein.

[0115] Specifically, in the second operating state, the P port of the first solenoid valve 204 is connected to the B port, and the A port is connected to the T port; the P port of the second solenoid valve 205 is connected to the B port, and the A port is connected to the T port. The operating air path is as follows: outside air flows into the P port of the first solenoid valve 204 through the intake drying pipe 1, enters the second adsorbent placement chamber 203 through the B port for adsorption and dehumidification, flows out of the second adsorbent placement chamber 203 and enters the T port of the second solenoid valve 205, flows out through the A port to the downstream of the intake drying pipe 1, and finally enters the gas turbine. The regeneration air path is as follows: hot air output from the adsorbent regeneration device flows into the T port of the first solenoid valve 204 through the adsorbent regeneration pipe 13, enters the first adsorbent placement chamber 202 through the A port to heat and regenerate the deactivated adsorbent 17, flows out of the first adsorbent placement chamber 202 and enters the P port of the second solenoid valve 205, flows out through the B port to the downstream of the adsorbent regeneration pipe 13, and finally exits through the air outlet.

[0116] This enables the switching of the gas pipelines containing the first adsorbent placement chamber 202 and the second adsorbent placement chamber 203.

[0117] Preferably, the controller 201 is a single-chip microcomputer or a programmable controller 201, and is equipped with humidity detection and intelligent switching control logic.

[0118] A first humidity detection device 16 and a second humidity detection device 18 are respectively installed before and after the adsorption drying device 2. Both the first humidity detection device 16 and the second humidity detection device 18 are connected to the controller 201. The first humidity detection device 16 is located upstream (on the air inlet side) of the adsorption drying device 2 and is used to detect the humidity of the air before it enters the adsorption drying device 2; the second humidity detection device 18 is located downstream (on the air outlet side) of the adsorption drying device 2 and is used to detect the humidity of the air after it has been dehumidified by the adsorption drying device 2.

[0119] When the humidity value detected by the second humidity detection device 18 is greater than the preset threshold and the difference between the humidity value detected by the first humidity detection device 16 and the humidity value detected by the first humidity detection device 16 is less than the preset difference, the controller 201 sends a replacement signal to drive the adsorbent placement chamber containing the saturated adsorbent 17 to switch to the adsorbent regeneration pipeline 13, and switches the adsorbent placement chamber containing the regenerated adsorbent 17 to the air intake drying pipeline 1.

[0120] Specifically, among the humidity detection devices installed before and after the adsorption drying device 2, when the rear humidity detection device (i.e., the second humidity detection device 18) detects that the relative humidity is below 40%, it indicates that the adsorbent 17 in the adsorbent placement chamber, which is currently in operation, is still effective, and the adsorption drying device 2 maintains normal operation without switching.

[0121] When the humidity detected by the post-detection device is greater than 40%, and the humidity value detected by the pre-detection device (i.e., the first humidity detection device 16) is 20% higher than the humidity value detected by the post-detection device (i.e., the difference between the two is greater than 20%), it indicates that the adsorbent 17 has become saturated, and the adsorption drying device 2 sends a switching signal.

[0122] After receiving the switching signal, the controller 201 controls the switching device to automatically switch the regenerated adsorbent storage chamber to the air inlet drying pipeline 1 to continue dehumidification, and at the same time automatically switches the saturated adsorbent storage chamber to the adsorbent regeneration pipeline 13 to regenerate the adsorbent 17.

[0123] Specifically, such as Figure 1 As shown, the adsorbent regeneration device includes a tube wall heat exchanger 12. One end of the tube wall heat exchanger 12 is connected to the exhaust end of the waste heat boiler 8 via a pump 9 (a fan can be used in some scenarios) and a butterfly valve 10, and the other end is connected to the adsorption drying device 2 via an adsorbent regeneration pipeline 13.

[0124] The flue gas from the waste heat boiler 8 flows through the tube wall heat exchanger 12 to heat the air, and the heated air is used to regenerate the deactivated adsorbent 17 in the adsorption dryer 2.

[0125] The exhaust gas volume of the waste heat boiler 8 is controlled by pump 9 and butterfly valve 10. When the weather is dry and regeneration of the adsorption dryer 2 is not required, pump 9 and butterfly valve 10 are closed, and the tube-wall heat exchanger is not started. When regeneration of the deactivated adsorption dryer 2 is required, pump 9 and butterfly valve 10 are opened, and the tube-wall heat exchanger is started. The exhaust gas flow rate can be adjusted through butterfly valve 10, thereby controlling the temperature of the regeneration hot air to meet the regeneration needs under different operating conditions.

[0126] Specifically, such as Figure 2 As shown, the gas turbine's intake drying pipe 1 is sequentially equipped with a rain cover 14, an insect screen 15, and an adsorbent 17 (illustrated only) along the intake direction. Figure 2 The switching device of the adsorption dryer 2 is not shown), coarse filter 19 and fine filter 22. Air passes through the gas turbine intake flow structure in sequence through the rain cover 14, insect net 15, adsorption dryer 2, coarse filter 19, fine filter 22, spray cooling device 24, and finally enters the gas turbine compressor 4.

[0127] A rain cover 14 is located at the outermost end to prevent rainwater and large water droplets from entering the air intake channel, thus avoiding direct impact of large amounts of liquid water on downstream equipment. An insect screen 15 is located after the rain cover 14 to prevent flying insects, willow catkins, leaves, and other large debris from entering the system. An adsorption dryer 2 is located after the insect screen 15 to remove gaseous water (water vapor) from the air, reducing the relative humidity. A coarse filter 19 is located after the adsorption dryer 2 to intercept large particles of dust and sand in the air. A fine filter 22 is located after the coarse filter 19 to filter out fine particulate matter, ensuring that the air entering the gas turbine meets high cleanliness requirements.

[0128] Preferred, such as Figure 2 As shown, the air intake channel between the coarse filter 19 and the fine filter 22 is Z-shaped, with two 90° turns, and a dirt storage space is formed in the lower part of the channel behind the coarse filter 19.

[0129] The sludge storage space is the sludge pit 20 located behind the coarse filter 19.

[0130] The Z-shaped structure utilizes the principle of inertial separation of airflow at corners, causing large dust and impurities carried in the air to separate from the airflow due to centrifugal force when turning, and then settle into the drain pit 20 at the bottom of the channel behind the coarse filter 19 under the influence of gravity. The dust and impurities deposited in the drain pit 20 can be discharged by regular manual cleaning or vacuum suction, avoiding secondary pollution caused by excessive accumulation being re-entrained by the airflow.

[0131] Preferably, a cleaning device 21 is further provided.

[0132] like Figure 2 As shown, it also includes a cleaning device 21, which is located on the air inlet side of the fine filter 22 and is used to periodically clean the fine filter 22.

[0133] The cleaning device 21 periodically cleans the fine filter 22 to remove accumulated dust from its surface, restore its flow capacity, and prevent the filter element from experiencing a sharp increase in pressure loss due to excessive dust accumulation. During cleaning, pollutant particles fall vertically into the bottom drain pit 20 under the action of airflow, facilitating centralized cleaning.

[0134] Preferred, such as Figure 2 As shown, the system also includes a spray cooling device 24 disposed on the outlet side of the fine filter 22.

[0135] A temperature detection device 23 (connected to the controller 201) is provided on the air inlet side of the spray cooling device 24. When the temperature detected by the temperature detection device 23 is higher than the high temperature threshold, the controller 201 controls the spray cooling device 24 to start.

[0136] The high-temperature threshold is 35℃. When the temperature detected by the temperature detection device 23 exceeds 35℃, the adsorption dryer 2 is activated for dehumidification. The adsorption dryer 2 starts working to reduce air humidity and simultaneously assists in the subsequent spray cooling process, improving the cooling effect. The dehumidified air is then cooled, enhancing the evaporative cooling effect and thus increasing the gas turbine's output during high-temperature seasons. Since the air has already been dehumidified by the adsorption dryer 2, it will not cause "wet blockage," reducing the risk of "wet blockage" at its source. The synergy of these two technologies overcomes the limitations of using a single technology in high-humidity environments.

[0137] like Figure 2 As shown, the spray cooling device 24 includes multiple spray nozzles 25, which are arranged at intervals in an equilateral triangle pattern. The uniform arrangement of the spray nozzles 25 in an equilateral triangle pattern can form a uniformly covered mist field without dead zones on the air intake section (cooling water, alcohol, or other volatile fuels can be used), ensuring sufficient and uniform heat and moisture exchange with the air, thereby maximizing evaporative cooling efficiency and improving the consistency of cooling effect.

[0138] The spray cooling device 24 cools the air by spraying out liquids such as alcohol. By combining dehumidification and spray cooling, it achieves a comprehensive treatment of the air entering the gas turbine by first dehumidifying and then cooling it.

[0139] When the temperature of the spray cooling device 24 exceeds 35℃, the cooling water flow is activated. The cooling water flow rate changes with ambient temperature as follows: when the ambient temperature reaches 35℃, the cooling water flow rate is 50% of the maximum; as the ambient temperature increases, the cooling water flow rate gradually increases; when the ambient temperature reaches 40℃, the cooling water flow rate reaches the maximum spray rate (100%). The cooling water flow rate increases linearly between 35℃ and 40℃.

[0140] like Figure 4 As shown, the cooling water volume increases monotonically with rising ambient temperature. This control principle enables precise regulation of the cooling water volume, meeting cooling requirements while preventing water waste.

[0141] Example 3

[0142] This embodiment provides an intake filtration system with bypass function.

[0143] Compared to Embodiment 1, the system also includes a backup air inlet pipeline connected in parallel to both ends of the adsorption drying device 2. An electrically controlled air valve is installed on the backup air inlet pipeline to control the on / off state of the pipeline. The electrically controlled air valve is connected to the controller 201.

[0144] In this embodiment, both the first solenoid valve 204 and the second solenoid valve 205 are solenoid three-position four-way valves. Both the first solenoid valve 204 and the second solenoid valve 205 have a third position. When in the third position, both the first solenoid valve 204 and the second solenoid valve 205 close the gas path, that is, the P port, A port, B port and T port of the first solenoid valve 204 and the second solenoid valve 205 are not connected to each other.

[0145] When the temperature detected by the temperature detection device 23 is higher than the low temperature threshold and lower than the high temperature threshold, the controller 201 controls the electric control valve to open and the first electric control valve 204 and the second electric control valve 205 are both in the third position. At this time, the backup air intake pipeline is opened, and the first electric control valve 204 and the second electric control valve 205 close the air path. The adsorption drying device 2 is completely bypassed and does not participate in the air intake process, so as to reduce unnecessary adsorbent 17 loss.

[0146] Otherwise, the controller 201 controls the electronically controlled air valve to close and neither the first electronically controlled valve 204 nor the second electronically controlled valve 205 is in the third position. At this time, the standby air intake pipeline is closed, and the first electronically controlled valve 204 and the second electronically controlled valve 205 are in the first or second position. The air intake airflow passes through the adsorption drying device 2 for dehumidification treatment.

[0147] The low-temperature threshold is 10℃, and the high-temperature threshold is 35℃. The specific control logic is as follows:

[0148] When the temperature is between the low temperature threshold and the high temperature threshold, there is no need to cool down and there is no risk of ice blockage in the fine filter 22. The backup air intake line is activated and the adsorption dryer 2 is switched to the idle position (i.e., the first solenoid valve 204 and the second solenoid valve 205 are both in the third position). At this time, the adsorption dryer 2 does not work, reducing the loss of adsorbent 17 and equipment wear.

[0149] When the temperature is below 10℃, in order to reduce the risk of gas turbine intake ice blockage under low temperature and high humidity conditions, the adsorption dryer 2 is activated for dehumidification. At this time, the standby intake pipeline is closed, and the adsorption dryer 2 is connected in series to the intake drying pipeline 1 for operation.

[0150] When the temperature is above 35℃, the adsorption dryer 2 is activated for dehumidification. The adsorption dryer 2 starts working to reduce the air humidity and assists the subsequent spray cooling to improve the cooling effect. At this time, the standby air intake pipe is closed, and the adsorption dryer 2 is connected in series to the air intake drying pipe 1 to work.

[0151] Combination Figure 1 , Figure 2 and Figure 3 The overall workflow of the present invention will be further explained below.

[0152] Air enters the compressor 4 through the intake drying pipe 1 and is compressed. The compressor 4 is driven by the electric motor 3. Then, the air enters the combustion chamber 6 through the combustion chamber gas inlet 5 and then enters the gas turbine 7 to do work. The exhaust gas from the gas turbine 7 enters the waste heat boiler 8. After heat exchange with the waste heat boiler heat exchange device 11, part of the exhaust gas enters the tube wall heat exchanger 12 through the pump 9 and butterfly valve 10, and is finally discharged into the atmosphere.

[0153] Meanwhile, the clean air is heated by the exhaust gas through the tube wall heat exchanger 12, and then the heated air enters the self-switching adsorption dryer 2 through the adsorbent regeneration pipeline 13 to regenerate the deactivated adsorbent 17, and finally is discharged into the atmosphere through the air outlet.

[0154] On the intake side, air passes sequentially through the rain cover 14, insect net 15, adsorption dryer 2 (or backup intake pipeline, depending on the system operating status), coarse filter 19, fine filter 22, and spray cooling device 24 in the gas turbine intake flow structure, and finally enters the gas turbine compressor 4.

[0155] When the ambient temperature is between the low temperature threshold and the high temperature threshold, the adsorption dryer 2 is bypassed, and the air enters the coarse filter 19 directly through the backup air intake pipe without being treated by the adsorption dryer 2. When the ambient temperature is below 10℃ or above 35℃, the adsorption dryer 2 is put into operation, and the air is dehumidified by the adsorption dryer 2 before entering the subsequent filtration and cooling stages.

[0156] The controller 201 automatically controls the operation of the switching device, the electrically controlled air valve and the spray cooling device 24 based on the detection signals of the first humidity detection device 16, the second humidity detection device 18 and the temperature detection device 23, so as to realize the fully automatic operation of the system.

[0157] like Figure 4 As shown, the controller 201 is configured with preset threshold one, preset threshold two, preset threshold three and preset threshold four, wherein preset threshold one is a humidity start threshold, preset threshold two is a humidity difference threshold, preset threshold three is a high temperature threshold and preset threshold four is a low temperature threshold.

[0158] The control method of the controller 201 includes the following steps:

[0159] Step S1: Real-time acquisition of humidity signal 1 output by the first humidity detection device 16, humidity signal 2 output by the second humidity detection device 18, and temperature signal 1 output by the temperature detection device 23.

[0160] Step S2: Determine whether the temperature signal is greater than a preset threshold three or less than a preset threshold four.

[0161] If the temperature signal is between preset threshold 4 and preset threshold 3 (i.e., the temperature signal is not greater than preset threshold 3 and not less than preset threshold 4), the controller 201 controls the switching device to switch the adsorption drying device 2 to the idle position, the standby air inlet pipe is opened, the first solenoid valve 204 and the second solenoid valve 205 are both in the third position closed air passage, and the adsorption drying device 2 does not perform dehumidification.

[0162] If the temperature signal is greater than the preset threshold three or less than the preset threshold four, proceed to step S3.

[0163] Step S3: Determine whether the humidity signal is greater than a preset threshold.

[0164] If the humidity signal is not greater than a preset threshold, the switching device is not activated, and the adsorption drying device 2 maintains its current working state.

[0165] If the humidity signal is greater than a preset threshold, proceed to step S4.

[0166] Step S4: Determine whether the difference between the humidity signal one and the humidity signal two is greater than a preset threshold two.

[0167] If the difference between the first humidity signal and the second humidity signal is not greater than the second preset threshold, the switching device is not activated and the adsorption drying device 2 maintains its current working state.

[0168] If the difference between the first humidity signal and the second humidity signal is greater than the second preset threshold, the controller 201 controls the switching device to start, sends a switching signal to the switching device, drives the adsorbent placement chamber containing the saturated adsorbent 17 to switch to the adsorbent regeneration pipeline 13, and switches the adsorbent placement chamber containing the regenerated adsorbent 17 to the air inlet drying pipeline 1.

[0169] Specifically, in this embodiment, the preset threshold three is 35°C, the preset threshold four is 10°C, the preset threshold one is 40%, and the preset threshold two is 20%.

[0170] When the temperature is below 10℃, in order to reduce the risk of gas turbine intake ice blockage under low temperature and high humidity conditions, the controller 201 activates the adsorption drying device 2 for dehumidification.

[0171] When the temperature is above 35°C, the controller 201 activates the adsorption drying device 2 to dehumidify and reduce the air humidity, while assisting the spray cooling device 24 to cool down and improve the cooling effect.

[0172] When the adsorption drying device 2 is in operation, if the humidity value detected by the front humidity detection device is greater than 40% and the humidity difference between the front humidity detection device and the rear humidity detection device is greater than 20%, it indicates that the adsorbent 17 in the adsorbent placement chamber currently in operation is approaching saturation. The controller 201 controls the switching device to start and switch the adsorbent placement chamber.

[0173] Conversely, if the humidity value detected by the pre-humidity detection device is not greater than 40%, or the humidity difference between the pre-humidity detection device and the post-humidity detection device is not greater than 20%, it indicates that the adsorbent 17 still has sufficient adsorption capacity, and the controller 201 controls the switching device not to start, maintaining the current working state.

[0174] This invention achieves intelligent, hierarchical control of the adsorption drying device 2 based on ambient temperature and humidity through the aforementioned control method. The temperature signal is used to determine whether the adsorption drying device 2 needs to be activated. Within the suitable temperature range (10℃-35℃), where there is neither a risk of ice blockage nor a need for high-temperature cooling, the system automatically bypasses the adsorption drying device 2 to an idle position, reducing unnecessary loss of the adsorbent 17 and equipment wear, and extending the service life of the adsorbent 17. Under extreme temperature conditions (low or high), the system automatically activates the adsorption drying device 2 for dehumidification, preventing ice blockage at low temperatures and high humidity and assisting in spray cooling to improve the cooling effect at high temperatures.

[0175] The humidity signal is used to determine whether the adsorbent 17 is saturated and needs to be switched: the switching action is triggered only when the current humidity is greater than the start threshold and the difference between the humidity before and after is greater than the difference threshold, thus avoiding frequent false switching caused by humidity signal fluctuations and making the switching timing more accurate and reliable.

[0176] The control strategy that combines temperature and humidity conditions ensures that the system can automatically optimize its operation under different environmental conditions, taking into account dehumidification effect, equipment life and operating economy.

[0177] The variation of cooling water volume with ambient temperature is as follows: Figure 3 As shown, when the temperature of the spray cooling device 24 exceeds 35℃, the cooling water flow is activated. The cooling water flow rate varies with ambient temperature as follows: when the ambient temperature reaches 35℃, the cooling water flow rate is 50% of the maximum; as the ambient temperature increases, the cooling water flow rate gradually increases; when the ambient temperature reaches 40℃, the cooling water flow rate reaches the maximum spray rate (100%). The cooling water flow rate increases linearly between 35℃ and 40℃.

[0178] In summary, based on the gas turbine system and intake structure, this invention proposes an "adsorption drying device + spray cooling device" to cool the gas turbine intake air under high temperature and high humidity conditions and improve the gas turbine output. At the same time, the waste heat from the exhaust gas of the waste heat boiler is used to regenerate the deactivated adsorption drying device, thereby reducing the energy consumption required for the regeneration of conventional adsorption drying devices. In addition, this device can also reduce the risk of ice blockage in the gas turbine intake filter element under low temperature and high humidity conditions.

[0179] In addition to pulse backflushing, the cleaning device 21 can also use sonic cleaning or mechanical vibration.

[0180] The automatic switching device for adsorbent 17 can also be implemented in various ways, such as rotary, translational or lifting.

[0181] The equilateral triangle arrangement of nozzles is for uniform coverage. Under a specific air duct cross-section, a square or other symmetrical dense arrangement can also achieve a similar effect.

[0182] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0183] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0184] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0185] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0186] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A gas turbine inlet air filtration system, characterized in that, include: The intake drying pipe (1) is used to introduce air into the gas turbine; An adsorption drying device (2) is connected in series in the air inlet drying pipe (1) to remove moisture from the air entering the air inlet drying pipe (1); The adsorbent regeneration device has an inlet end connected to the exhaust end of the waste heat boiler (8) of the gas turbine, and an outlet end connected in series with the adsorption drying device (2) through an adsorbent regeneration pipeline (13) to regenerate the saturated and deactivated adsorbent (17) in the adsorption drying device (2) using the exhaust of the waste heat boiler (8). The adsorbent regeneration pipeline (13) is connected at one end to the air outlet of the adsorbent regeneration device, and at the other end is connected in series to the adsorption drying device (2) and then to the air outlet.

2. The gas turbine inlet air filtration system according to claim 1, characterized in that, The adsorption drying device (2) is a self-switching adsorption drying device (2), comprising: Controller (201); The first adsorbent placement chamber (202) and the second adsorbent placement chamber (203) are both used to place adsorbent (17) and are provided with two air vents arranged opposite to each other. The switching device is used to switch the gas path of the first adsorbent placement chamber (202) and the second adsorbent placement chamber (203) according to the instruction of the controller (201), thereby connecting the first adsorbent placement chamber (202) and the air inlet drying pipeline (1) in series, connecting the second adsorbent placement chamber (203) and the adsorbent regeneration pipeline (13) in series, or connecting the first adsorbent placement chamber (202) and the adsorbent regeneration pipeline (13) in series, and connecting the second adsorbent placement chamber (203) and the air inlet drying pipeline (1) in series.

3. The gas turbine inlet air filtration system according to claim 2, characterized in that, The switching device includes a power supply (207), a relay (206), a first solenoid valve (204), and a second solenoid valve (205); Both the first solenoid valve (204) and the second solenoid valve (205) are provided with a first position and a second position, as well as a P port, an A port, a B port and a T port. When in the first position, the P port is connected to the A port and the B port is connected to the T port. When in the second position, the P port is connected to the B port and the A port is connected to the T port. The power supply (207), the relay (206), the control terminal of the first solenoid valve (204) and the control terminal of the second solenoid valve (205) are connected in series to form a circuit; The controller (201) is connected to the relay (206) to control the first solenoid valve (204) and the second solenoid valve (205) to switch between the first position and the second position; Port A of the first solenoid valve (204) is connected to one vent of the first adsorbent placement chamber (202); the other vent of the first adsorbent placement chamber (202) is connected to Port P of the second solenoid valve (205); The B port of the first solenoid valve (204) is connected to one vent of the second adsorbent placement chamber (203); the other vent of the second adsorbent placement chamber (203) is connected to the T port of the second solenoid valve (205); The P port of the first solenoid valve (204) is connected to the intake drying pipeline (1); the A port of the second solenoid valve (205) is connected to the intake drying pipeline (1); the switching device is connected to the intake drying pipeline (1) in series through the P port of the first solenoid valve (204) and the A port of the second solenoid valve (205); The T port of the first solenoid valve (204) is connected to the adsorbent regeneration pipeline (13); the B port of the second solenoid valve (205) is connected to the adsorbent regeneration pipeline (13); the switching device is connected to the adsorbent regeneration pipeline (13) in series through the T port of the first solenoid valve (204) and the B port of the second solenoid valve (205); The system has a first working state and a second working state; In the first working state, the controller (201) controls the relay (206) to de-energize the circuit, and the first solenoid valve (204) and the second solenoid valve (205) are both in the first position, so that the first adsorbent placement chamber (202) is connected in series in the air intake drying pipeline (1), and the adsorbent (17) inside is used to dehumidify the air in the air intake drying pipeline (1). The second adsorbent placement chamber (203) is connected in series in the adsorbent regeneration pipeline (13), and the hot air introduced through the adsorbent regeneration pipeline (13) regenerates the adsorbent (17) therein. In the second working state, the controller (201) controls the relay (206) to energize the circuit, and the first solenoid valve (204) and the second solenoid valve (205) are both energized and switched to the second position, so that the second adsorbent placement chamber (203) is connected in series in the air intake drying pipeline (1), and the adsorbent (17) inside is used to dehumidify the air in the air intake drying pipeline (1). The first adsorbent placement chamber (202) is connected in series in the adsorbent regeneration pipeline (13), and the hot air introduced through the adsorbent regeneration pipeline (13) regenerates the adsorbent (17) therein.

4. The gas turbine inlet air filtration system according to claim 3, characterized in that, The adsorption drying device (2) is provided with a first humidity detection device (16) and a second humidity detection device (18) at the front and back respectively; the first humidity detection device (16) and the second humidity detection device (18) are both connected to the controller (201); When the humidity value detected by the second humidity detection device (18) is greater than the preset threshold and the difference between the humidity value detected by the first humidity detection device (16) and the humidity value detected by the second humidity detection device (16) is less than the preset difference, the system switches the working state. The controller (201) sends a replacement signal to the switching device to switch the air path of the first adsorbent placement chamber (202) and the second adsorbent placement chamber (203), thereby driving the adsorbent (17) placement chamber containing saturated adsorbent (17) to switch to the adsorbent regeneration pipeline (13), and switching the adsorbent (17) placement chamber containing regenerated adsorbent (17) to the air inlet drying pipeline (1).

5. The gas turbine inlet air filtration system according to claim 1, characterized in that, The adsorbent regeneration device includes a tube wall heat exchanger (12); One end of the tube wall heat exchanger (12) is connected to the exhaust end of the waste heat boiler (8) via a pump (9) and a butterfly valve (10), and the other end is connected to the adsorption drying device (2) via the adsorbent regeneration pipeline (13). The flue gas from the waste heat boiler (8) flows through the tube wall heat exchanger (12) to heat the air, and the heated air is used to regenerate the deactivated adsorbent (17) in the adsorption dryer (2).

6. The gas turbine inlet air filtration system according to claim 1, characterized in that, The gas turbine's air intake passage is provided with a rain cover (14), an insect net (15), the adsorption drying device (2), a coarse filter (19), and a fine filter (22) in sequence along the air intake direction.

7. The gas turbine inlet air filtration system according to claim 6, characterized in that, The air intake channel between the coarse filter (19) and the fine filter (22) is Z-shaped, with two 90° turns, and a dirt storage space is formed in the lower part of the channel behind the coarse filter (19).

8. The gas turbine inlet air filtration system according to claim 7, characterized in that, The sludge storage space is a sludge pit (20) located behind the coarse filter (19).

9. The gas turbine inlet air filtration system according to claim 6, characterized in that, It also includes a cleaning device (21), which is disposed on the air inlet side of the fine filter (22) and is used to clean the fine filter (22).

10. The gas turbine inlet air filtration system according to claim 6, characterized in that, It also includes a spray cooling device (24) disposed on the outlet side of the fine filter (22); The spray cooling device (24) is equipped with a temperature detection device (23) on the air inlet side; when the temperature detected by the temperature detection device (23) is higher than the preset temperature, the spray cooling device (24) is activated; The spray cooling device (24) includes a plurality of spray nozzles (25) arranged at intervals in an equilateral triangle pattern.

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