Device for recycling heat of gas turbine of nursing ship for regeneration of rotating wheel

Abstract

The utility model discloses a device for recycling heat of a gas turbine of a nursing ship for regenerating a rotating wheel, relates to the technical field of waste heat recycling, and aims to solve the problem that the waste heat of waste gas discharged by the gas turbine of the conventional nursing ship is not high in recycling efficiency. A first gas guide pipe is installed at the exhaust end of the gas turbine, an exhaust valve is installed in a pipeline of the first gas guide pipe, a heat exchanger is installed at one end of the first gas guide pipe, a third gas guide pipe is fixedly connected to the heat energy output end of the heat exchanger, and an electric heater is installed at one end of the third gas guide pipe. And the output end of the electric heater is fixedly connected with a fourth gas guide pipe, one end of the fourth gas guide pipe is provided with a rotating wheel, and the desorption gas outlet end of the rotating wheel is fixedly connected with a fifth gas guide pipe. The effects that waste heat can be efficiently and stably recycled, secondary heating is conducted according to the situation, and the waste heat is effectively utilized in other systems of the ship are achieved.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology, and in particular to a device for recovering heat from a frigate gas turbine for turbine regeneration. Background Technology

[0002] In recent years, a large number of ships using gas turbines as their primary propulsion system have been commissioned, significantly increasing the intensity of gas turbine use and the duration of continuous operation. Compared to traditional steam turbines, gas turbines offer advantages such as smaller size, lighter weight, rapid start-up, and higher power density, making them a primary power source for modern warships, especially destroyers, frigates, and aircraft carriers. With continuous technological advancements, the performance of marine gas turbines has been continuously improved, particularly in power output, fuel efficiency, and reliability, greatly enhancing the combat capabilities and range of ships. During operation, the gas turbines on frigates generate a significant amount of waste heat, which is typically released into the atmosphere through cooling systems. To reduce energy waste and improve system efficiency, heat recovery technologies have been researched in recent years, gradually utilizing exhaust waste heat.

[0003] Rotary dehumidification technology removes moisture from the air using the principle of physical adsorption and is widely used in industries such as industrial processing, air conditioning, pharmaceuticals, and food processing. Its principle involves the rotation of a rotor, which adsorbs moisture from the air onto the rotor material. The absorbed moisture is then released by regenerated air, restoring the rotor's moisture absorption capacity. This technology is particularly valuable in marine environments. In offshore wind power systems, where high salinity and humidity create challenging conditions, dehumidification is crucial for the long-term stable operation of equipment. An effective dehumidification system can significantly reduce equipment corrosion, ensure the stability of electrical equipment, improve the quality of life for crew members, inhibit mold growth, and ensure the normal operation of ships during long voyages. Furthermore, dehumidification technology helps maintain the temperature and humidity balance inside the ship, ensuring a safe storage environment. Therefore, dehumidification measures on ships not only extend the service life of equipment but also improve the internal and external environment of the ship, making it a key technology for ensuring the safe and efficient operation of vessels.

[0004] A common problem with rotary dehumidifiers is that insufficient heat recovery leads to inadequate intake air temperature for regeneration, thus reducing dehumidification efficiency. Therefore, given shipboard conditions, it is objectively necessary to develop a device that reduces heat waste, improves heat utilization, and enhances rotary dehumidification efficiency by utilizing waste heat to achieve efficient waste heat utilization. Utility Model Content

[0005] The purpose of this invention is to provide a device for recovering waste heat from a frigate's gas turbine for use in a turbine regeneration system. This device can efficiently and stably recover waste heat, perform secondary heating as needed, and effectively utilize the heat in other systems of the ship.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A device for recovering heat from a frigate gas turbine for turbine regeneration includes a gas turbine, a first gas guide pipe installed at the exhaust end of the gas turbine, an exhaust valve installed in the pipeline of the first gas guide pipe, a heat exchanger installed at one end of the first gas guide pipe, a third gas guide pipe fixedly connected to the heat energy output end of the heat exchanger, an electric heater installed at one end of the third gas guide pipe, a fourth gas guide pipe fixedly connected to the output end of the electric heater, a turbine rotor installed at one end of the fourth gas guide pipe, a fifth gas guide pipe fixedly connected to the desorption outlet end of the turbine rotor, a regeneration fan fixedly installed at one end of the fifth gas guide pipe, a sixth gas guide pipe fixedly connected to the dehumidification inlet end of the turbine rotor, a seventh gas guide pipe fixedly connected to the dehumidification outlet end of the turbine rotor, and a fan fixedly installed at one end of the seventh gas guide pipe.

[0008] By adopting the above technical solution, the exhaust gas temperature of the gas turbine can be recovered and used to heat the regenerated air of the turbine rotor. The turbine rotor can then be used to dehumidify the air inside the frigate, thereby improving the efficiency of heat energy recovery and reuse.

[0009] Furthermore, the fourth air duct has an installation hole on its wall, and a temperature sensor is fixedly installed inside the installation hole. A temperature controller is installed outside the electric heater. The temperature sensor is electrically connected to the temperature controller, and the temperature controller is electrically connected to the electric heater.

[0010] By adopting the above technical solution, the temperature of the regenerated air can be monitored, and the power of the electric heater can be adjusted according to the monitoring results.

[0011] Furthermore, the heat exchanger includes a heat exchange box, inside which a horizontal heat pipe is installed. The inlet end of the horizontal heat pipe is connected to the outlet end of the first air guide pipe, and the outlet end of the horizontal heat pipe is located outside the heat exchange box.

[0012] By adopting the above technical solution, it is ensured that the exhaust gas of the gas turbine can effectively pass through the interior of the heat exchanger.

[0013] Furthermore, a second air guide pipe is fixedly connected to the low-temperature air input end of the heat exchanger, and an inner partition is fixedly connected to the middle position inside the heat exchange box. Multiple through holes are provided on the outer surface of the inner partition, and the horizontal heat pipe passes through the through holes of the inner partition.

[0014] By adopting the above technical solution, full contact between the regenerated air and the horizontal heat pipe is ensured.

[0015] Furthermore, the electric heater is equipped with a resistance heating tube inside.

[0016] By adopting the above technical solution, a resistance heating tube can be used to supplement the temperature.

[0017] Furthermore, the dehumidifying wheel includes a housing, a motor is fixedly mounted on the end face of the housing, a dehumidifying wheel is fixedly mounted on one end of the rotating shaft of the motor, the dehumidifying wheel is located inside the housing, and the two end faces of the dehumidifying wheel are in contact with the two end faces of the inner end face of the housing.

[0018] By adopting the above technical solution, the stable rotation of the dehumidification rotor can be ensured.

[0019] In summary, the beneficial technical effects of this utility model are as follows:

[0020] 1. This utility model improves energy utilization efficiency, reduces energy waste, and lowers ship operating costs by recovering waste heat generated by gas turbines. The design has the advantages of small size and low weight, does not occupy too much space, and does not affect the ship's maneuverability and performance. Through effective heat recovery, it reduces the frigate's dependence on external energy. At the same time, the electric heater can reheat the regenerated air passing through the heat pipe condensation section to ensure that it reaches the required temperature and improve the stability of the rotor dehumidification system.

[0021] 2. In operation, this utility model allows the electric heater to be turned off initially, allowing regenerated hot air to pass through the fourth air duct. At this time, a temperature sensor detects the temperature of the regenerated hot air and transmits the detected data to the internal temperature controller. When the temperature meets the regeneration temperature, the electric heater is not turned on. When the temperature is insufficient, the temperature controller turns on the electric heater to perform a secondary heating operation, ensuring stable operation of the rotary regeneration process. Simultaneously, the temperature sensor monitors the temperature of the regenerated hot air in real time. When the temperature is too high, the temperature controller reduces the power of the electric heater, achieving energy-saving self-regulation and further improving its practicality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] In the diagram: 1. Gas turbine; 2. Exhaust valve; 3. Heat exchanger; 4. Electric heater; 5. Rotor; 6. Regeneration fan; 7. Fan; 8. First air duct; 9. Heat exchange box; 10. Horizontal heat pipe; 11. Inner partition; 12. Second air duct; 13. Third air duct; 14. Resistance heating element; 15. Fourth air duct; 16. Temperature sensor; 17. Temperature controller; 18. Dehumidifying rotor; 19. Housing; 20. Motor; 21. Fifth air duct; 22. Sixth air duct; 23. Seventh air duct. Detailed Implementation

[0024] The method of this utility model will be further described in detail below with reference to the accompanying drawings.

[0025] Reference Figure 1A device for recovering heat from a frigate gas turbine for turbine regeneration includes a gas turbine 1, a first air guide pipe 8 installed at the exhaust end of the gas turbine 1, an exhaust valve 2 installed in the pipe of the first air guide pipe 8, a heat exchanger 3 installed at one end of the first air guide pipe 8, a third air guide pipe 13 fixedly connected to the heat energy output end of the heat exchanger 3, an electric heater 4 installed at one end of the third air guide pipe 13, a fourth air guide pipe 15 fixedly connected to the output end of the electric heater 4, a turbine 5 installed at one end of the fourth air guide pipe 15, a fifth air guide pipe 21 fixedly connected to the desorption outlet end of the turbine 5, a regeneration fan 6 fixedly installed at one end of the fifth air guide pipe 21, a sixth air guide pipe 22 fixedly connected to the dehumidification inlet end of the turbine 5, and a sixth air guide pipe 22 fixedly connected to the dehumidification outlet end of the turbine 5. The seventh air duct 23 has a fan 7 fixedly installed at one end. The heat exchanger 3 includes a heat exchange box 9, inside which a horizontal heat pipe 10 is installed. The inlet end of the horizontal heat pipe 10 is connected to the outlet end of the first air duct 8, and the outlet end of the horizontal heat pipe 10 is located outside the heat exchange box 9. The low-temperature air input end of the heat exchanger 3 is fixedly connected to a second air duct 12. An inner partition 11 is fixedly connected at the middle position inside the heat exchange box 9. Multiple through holes are provided on the outer surface of the inner partition 11, and the horizontal heat pipe 10 passes through the through holes of the inner partition 11. The rotor 5 includes a housing 19, on which a motor 20 is fixedly installed. A dehumidifying rotor 18 is fixedly installed at one end of the rotating shaft of the motor 20. The dehumidifying rotor 18 is located in the housing. Inside the casing 19, the two ends of the dehumidifying impeller 18 are in contact with the two ends of the inner casing 19. The horizontal heat pipe 10 is made of stainless steel, which can withstand high temperatures and has high corrosiveness. The adsorption medium of the dehumidifying impeller 18 is made of silica gel. The high moisture absorption properties of silica gel effectively improve the heat recovery efficiency. During heat recovery, the exhaust valve 2 is opened, allowing the high-temperature exhaust gas generated by the gas turbine 1 to enter the interior of the horizontal heat pipe 10 through the first air guide pipe 8, and then enter the outside air after passing through the horizontal heat pipe 10. At this time, the regeneration fan 6 is started. The rotation of the regeneration fan 6 causes the second air guide pipe 12 to generate suction. The outside air enters the interior of the heat exchange box 9 through the second air guide pipe 12. Under the guidance of the inner partition 11, the outside air can fully interact with the horizontal heat pipe 10. After contact with tube 10, the air enters the electric heater 4 through the third air duct 13. When the heat exchange temperature is low, the resistance heating tube 14 is activated to reheat the regenerated air. The high-temperature regenerated air then enters the fourth air duct 15 and flows into the housing 19. It then passes through part of the dehumidifying impeller 18 and is discharged from the fifth air duct 21 and the regeneration fan 6. At the same time, the fan 7 and motor 20 are activated. The motor 20 drives the dehumidifying impeller 18 to rotate inside the housing 19. The rotation of the fan 7 causes the external air to pass sequentially through the sixth air duct 22, the dehumidifying impeller 18, and the seventh air duct 23. At this time, the dehumidifying impeller 18 can dehumidify the air.When the humidified dehumidifying rotor 18 moves to one end of the fourth air duct 15, the high-temperature regenerated air desorbs the humidified rotor 18, ensuring continuous dehumidification operation. This device improves energy efficiency, reduces energy waste, and lowers ship operating costs by recovering waste heat from the gas turbine. The design is compact and lightweight, occupying minimal space and thus not affecting the ship's maneuverability and performance. Effective heat recovery reduces the frigate's dependence on external energy sources. Simultaneously, an electric heater 4 reheats the regenerated air passing through the heat pipe condensation section, ensuring it reaches the required temperature and improving the stability of the rotor dehumidification system.

[0026] Reference Figure 1 The fourth air duct 15 has mounting holes on its wall, and a temperature sensor 16 (PT100) is fixedly installed inside the mounting holes. A temperature controller 17 is installed outside the electric heater 4. The temperature sensor 16 is electrically connected to the temperature controller 17, and the temperature controller 17 is electrically connected to the electric heater 4. The electric heater 4 has a resistance heating tube 14 inside. During operation, the electric heater 4 can be turned off initially, allowing regenerated hot air to pass through the interior of the fourth air duct 15. At this time, the temperature sensor 16 detects the temperature of the regenerated hot air and transmits the detected data to the interior of the temperature controller 17. When the temperature meets the regeneration temperature, the electric heater 4 is not turned on. When the temperature is insufficient, the temperature controller 17 turns on the electric heater 4 to achieve secondary heating operation, ensuring that the regeneration operation of the rotor 5 can be carried out stably. At the same time, the temperature sensor 16 monitors the temperature of the regenerated hot air in real time. When the temperature is too high, the temperature controller 17 reduces the power of the electric heater 4 to achieve energy-saving self-regulation operation, further improving its practicality.

[0027] Working principle: In use, first install the device in the designated location, open the exhaust valve 2, allowing the high-temperature exhaust gas generated by the gas turbine 1 to enter the interior of the horizontal heat pipe 10 through the first air guide pipe 8, and then enter the outside air after passing through the horizontal heat pipe 10. At this time, start the regeneration fan 6. The rotation of the regeneration fan 6 causes the second air guide pipe 12 to generate suction, and the outside air enters the interior of the heat exchange box 9 through the second air guide pipe 12. Under the guidance of the inner baffle 11, the outside air can fully contact the horizontal heat pipe 10 before entering the heat exchange box 9. The third air duct 13 enters the electric heater 4. When the heat exchange temperature is low, the resistance heating tube 14 is activated to reheat the regenerated air. The high-temperature regenerated air then enters the fourth air duct 15, flows through it into the housing 19, passes through part of the dehumidification impeller 18, and is then discharged from the fifth air duct 21 and the regeneration fan 6. Simultaneously, the fan 7 and motor 20 are activated, and the motor 20 drives the dehumidification impeller 18 to rotate inside the housing 19. The rotation of fan 7 causes external air to pass sequentially through the sixth air guide pipe 22, dehumidifying impeller 18, and the seventh air guide pipe 23. During this process, the dehumidifying impeller 18 dehumidifies the air. When the damp dehumidifying impeller 18 moves to one end of the fourth air guide pipe 15, the high-temperature regenerated air desorbs the damp air from the impeller 18, ensuring continuous dehumidification. When using electric heater 4 for secondary heating, the electric heater 4 is not activated initially, allowing the regenerated hot air to pass through the sixth air guide pipe 22, the dehumidifying impeller 18, and the seventh air guide pipe 23. Inside the four air guide tubes 15, the temperature sensor 16 detects the temperature of the regenerated hot air and transmits the detected data to the temperature controller 17. When the regeneration temperature is met, the electric heater 4 is not activated. When the temperature is insufficient, the temperature controller 17 activates the electric heater 4 to perform a secondary heating operation, ensuring that the regeneration operation of the rotor 5 can proceed stably. At the same time, the temperature sensor 16 monitors the temperature of the regenerated hot air in real time. When the temperature is too high, the temperature controller 17 reduces the power of the electric heater 4 to achieve energy-saving self-regulation.

[0028] The specific real-time examples described herein are preferred real-time examples of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A corvette gas turbine heat recovery for runner regeneration device, comprising a gas turbine (1), characterized by: The exhaust end of the gas turbine (1) is provided with a first air guide pipe (8), an exhaust valve (2) is arranged in the pipeline of the first air guide pipe (8), one end of the first air guide pipe (8) is provided with a heat exchanger (3), the heat energy output end of the heat exchanger (3) is fixedly connected with a third air guide pipe (13), one end of the third air guide pipe (13) is provided with an electric heater (4), the output end of the electric heater (4) is fixedly connected with a fourth air guide pipe (15), one end of the fourth air guide pipe (15) is provided with a runner (5), the desorption gas outlet end of the runner (5) is fixedly connected with a fifth air guide pipe (21), one end of the fifth air guide pipe (21) is fixedly provided with a regenerative fan (6), the dehumidification air inlet end of the runner (5) is fixedly connected with a sixth air guide pipe (22), the dehumidification air outlet end of the runner (5) is fixedly connected with a seventh air guide pipe (23), and one end of the seventh air guide pipe (23) is fixedly provided with a fan (7).

2. A frigate gas turbine heat recovery for runner regeneration apparatus according to claim 1, characterized in that: The fourth air guide pipe (15) is provided with a mounting hole in the pipe wall, and a temperature sensor (16) is fixedly arranged in the mounting hole, the outer portion of the electric heater (4) is provided with a temperature controller (17), the temperature sensor (16) is electrically connected with the temperature controller (17), and the temperature controller (17) is electrically connected with the electric heater (4).

3. A frigate gas turbine heat recovery for runner regeneration apparatus according to claim 1, characterized in that: The heat exchanger (3) comprises a heat exchange box (9), a horizontal heat pipe (10) is arranged in the heat exchange box (9), the air inlet end of the horizontal heat pipe (10) is communicated with the air outlet end of the first air guide pipe (8), and the air outlet end of the horizontal heat pipe (10) is arranged outside the heat exchange box (9).

4. A frigate gas turbine heat recovery for runner regeneration apparatus according to claim 3, characterised in that: The low-temperature air input end of the heat exchanger (3) is fixedly connected with a second air guide pipe (12), the inner intermediate position of the heat exchange box (9) is fixedly connected with an inner partition plate (11), a plurality of through holes are arranged on the outer surface of the inner partition plate (11), and the horizontal heat pipe (10) penetrates through the through holes of the inner partition plate (11).

5. A frigate gas turbine heat recovery for runner regeneration apparatus according to claim 1, characterized in that: The electric heater (4) is provided with an electric resistance heating pipe (14) in the inside.

6. A frigate gas turbine heat recovery for runner regeneration apparatus according to claim 1, characterized in that: The runner (5) comprises a shell (19), a motor (20) is fixedly arranged on the end face of the shell (19), a dehumidification runner (18) is fixedly arranged on one end of the rotating shaft of the motor (20), the dehumidification runner (18) is arranged in the inside of the shell (19), and the two end faces of the dehumidification runner (18) are attached to the two end faces of the inside of the shell (19).

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