An underwater multi-source energy supply split type power station system and working process

Abstract

The application relates to an underwater multi-source energy supply split type power station system and a working process, which comprises split raw material pressure cabins, split gas production pressure cabins, split electric pile pressure cabins, metering pumps, hydrogen production reactors, oxygen production reactors, fuel cell electric piles, thermoelectric batteries, storage batteries, DC / DC converters, storage batteries, wall-attached water tanks, wireless power supply modules, wired power supply modules, interruptible quick couplings, wet plug connectors and the like. According to the working characteristics and service life of different cabin equipment, the corresponding split pressure cabins can be replaced or supplemented, the entire pressure cabin does not need to be pulled out from deep water when part of the equipment fails or the raw material is supplemented once, and the equipment maintenance and raw material supplement difficulty are greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of underwater energy power system technology, and in particular to an underwater multi-source power supply split-type power station system and its working process. Background Technology

[0002] In recent years, with the upgrading of deep-sea equipment, technologies and methods for deep-sea resource development, deep-sea biological research, and deep-sea security and safety have become a reality. As a result, attention has been focused on the deep sea. Deep-sea energy, as the energy source for various deep-sea equipment, is a necessary prerequisite for realizing deep-sea resource development, biological research, and deep-sea security and safety.

[0003] Facing the development demands of deep-sea equipment for longer endurance, easier replenishment, clustering, and intelligence, constructing fully functional, high-performance, and easy-to-operate underwater power plants remains a challenge. Fuel cells, as electrochemical energy conversion devices, possess advantages such as high efficiency, low infrared signature, no moving parts, low vibration and noise, and zero emissions. Therefore, they are increasingly being used in enclosed underwater environments. For underwater power plants, in addition to high energy storage density and easy energy replenishment, the recyclability of byproducts between equipment or systems and the minimization of generated waste are also essential considerations.

[0004] In view of the above, and considering the requirements of underwater power plants in terms of energy storage density, ease of resupply, power generation method, and recycling of byproducts, there is an urgent need for an underwater multi-source power plant system. Summary of the Invention

[0005] To address the shortcomings of existing production technologies, the applicant provides an underwater multi-source power station system and its workflow. This system utilizes fuel cell power generation, thermoelectric power generation, and battery energy storage technologies to achieve not only high power generation efficiency and near-zero emissions, but also underwater multi-source energy supply. Furthermore, by employing hydrogen peroxide oxygen production technology and aluminum hydrolysis hydrogen production technology, the related reaction equipment is simple, the supply of hydrogen and oxygen raw materials is greatly simplified, the gas purity is high, there are no complex byproducts, and the energy storage density is high. Moreover, the water generated by the hydrogen peroxide oxygen production technology can be directly recycled through aluminum hydrolysis hydrogen production.

[0006] The technical solution adopted in this invention is as follows:

[0007] An underwater multi-source power plant system comprises a split-type fuel tank, a split-type gas production tank, and a split-type fuel cell stack tank connected in sequence. The fuel tank contains a hydrogen peroxide storage tank and an aluminum storage tank. The hydrogen peroxide storage tank is connected to the interior of the gas production tank via a pipeline, which is equipped with a first disconnectable quick-connect coupling. Inside the gas production tank, a metering pump, an oxygen production reactor, a first condenser, and a first gas-liquid separator are connected in series via pipelines. One end of the first gas-liquid separator is connected to both a water tank and a second gas-liquid separator. The other end of the first gas-liquid separator and the second gas-liquid separator are connected via pipelines to the fuel cell stack within the split-type fuel cell stack tank. The stack, oxygen-producing reactor, and product water tank are connected. The product water tank is also connected to the hydrogen-producing reactor via pipelines. The No. 2 gas-liquid separator is connected to the No. 2 condenser. The output end of the aluminum storage tank is connected to the hydrogen-producing reactor via a screw pump. The hydrogen-producing reactor is connected to the No. 2 condenser. Located inside the pressure-resistant compartment of the split stack, the fuel cell stack is connected to the thermal management unit, the fuel cell DC / DC converter, and the product processing unit. The fuel cell DC / DC converter is connected to the wireless power supply module, the battery pack, and the thermoelectric battery DC / DC converter via branch pipelines. The wireless power supply module is connected to the wired power supply module. The thermoelectric battery DC / DC converter is connected to the hydrogen-producing reactor via a wet-plug connector.

[0008] Its further technical solution lies in:

[0009] A cut-off quick connector is installed on the pipeline between the No. 2 gas-liquid separator and the fuel cell stack.

[0010] A No. 3 disconnectable quick connector is installed on the pipeline between the No. 1 gas-liquid separator and the fuel cell stack.

[0011] A No. 4 disconnectable quick coupling is installed on the pipeline between the aluminum storage tank and the screw pump.

[0012] A wall-mounted water tank is installed at the bottom of the hydrogen production reactor.

[0013] Inside the hydrogen production reactor, a fixed amount of aluminum powder, delivered by a screw pump, reacts chemically with water to produce hydrogen and heat.

[0014] The outer wall of the hydrogen production reactor is equipped with a hot-side copper heat-conducting component. The high-temperature side of the thermoelectric generator is attached to the hot-side copper heat-conducting component, and the low-temperature side of the thermoelectric generator is attached to the cold-side copper heat-conducting component.

[0015] The workflow of an underwater multi-source power supply split-type power station system includes the following processes:

[0016] First, the storage of energy raw materials for split-type power plants:

[0017] Hydrogen peroxide storage tank and aluminum storage tank are installed in the separate raw material pressure tank. The hydrogen peroxide storage tank is used to store hydrogen peroxide solution for oxygen production, and the aluminum storage tank is used to store aluminum powder for hydrogen production. Both the hydrogen peroxide storage tank and the aluminum storage tank have cut-off quick connectors on their outlet pipelines for connecting and disconnecting the interface pipeline between the separate raw material pressure tank and the separate gas production pressure tank in the seawater environment.

[0018] Secondly, hydrogen peroxide is used to produce oxygen:

[0019] Hydrogen peroxide in the hydrogen peroxide storage tank is metered and delivered to the oxygen generation reactor via a metering pump through a cut-off quick connector No. 1. Under the action of a catalyst, hydrogen peroxide decomposes to produce oxygen and water. The water generated after the reaction enters the generation water tank. The mixture of oxygen and water vapor is cooled by a condenser No. 1 and then separated by a gas-liquid separator No. 1. The separated oxygen is delivered to the inlet of the fuel cell stack through a cut-off quick connector No. 3, and the separated water enters the generation water tank.

[0020] Then, hydrogen is produced by the hydrolysis of aluminum:

[0021] Aluminum powder in the aluminum storage tank is quantitatively delivered to the hydrogen production reactor by a screw pump through the No. 4 cut-off quick connector. Water in the water generation tank is also delivered to the hydrogen production reactor. Aluminum decomposes to produce hydrogen under the action of a catalyst. The mixture of hydrogen and water vapor generated after the reaction is cooled by the No. 2 condenser and then separated by the No. 2 gas-liquid separator. The separated hydrogen is delivered to the inlet end of the fuel cell stack through the No. 2 cut-off quick connector.

[0022] Next, the thermoelectric generator sets generate and store electricity:

[0023] In the hydrogen production reactor, due to the high reaction temperature, heat is released while producing hydrogen. There is a hot-side copper heat-conducting component on the outer wall of the hydrogen production reactor. The high-temperature side of the thermoelectric generator is attached to the hot-side copper heat-conducting component, and the released heat is transferred to the high-temperature side of the thermoelectric generator through heat conduction. The low-temperature side of the thermoelectric generator is attached to the cold-side copper heat-conducting component, and the low temperature in the wall-mounted water tank is transferred to the low-temperature side of the thermoelectric generator through heat conduction. In this way, the thermoelectric generator forms a temperature difference through the high temperature on the high-temperature side and the low temperature on the low temperature side, and generates electricity through thermoelectricity. The generated electricity is supplied to the battery pack through the wet-plug connector and the thermoelectric battery DC / DC converter for charging underwater electrical equipment.

[0024] Secondly, bulkhead heat exchange cooling:

[0025] The wall of the wall-mounted water tank is attached to the inner wall of the split gas-producing pressure tank. The low temperature outside the pressure tank is continuously conducted to the cooling water in the wall-mounted water tank through heat conduction, thereby forming a heat exchange between the external seawater and the water in the wall-mounted water tank. By using the heat conduction of the pressure tank shell, it is not necessary to open the pressure tank to bring seawater into the tank. This not only improves the structural safety but also reduces the need for traditional heat exchangers and related pipelines.

[0026] Secondly, fuel cell power generation and storage:

[0027] Hydrogen and oxygen enter the fuel cell stack through the No. 2 and No. 3 cut-off quick connectors, where an electrochemical reaction occurs to generate electricity. This electricity is then supplied to the battery pack or directly to the wireless and wired power supply modules via the fuel cell DC / DC converter. The battery pack is used for peak shaving and valley filling. When there is no underwater charging equipment, the electricity generated by the fuel cell is stored in the battery pack. When there are many underwater charging devices and the electricity generated by the fuel cell is insufficient, it is supplemented by the electricity in the battery pack. In this way, underwater multi-source power supply is achieved through fuel cell power generation technology, thermoelectric power generation technology, and battery energy storage technology.

[0028] Finally, the replenishment of raw materials and the replacement and maintenance of equipment:

[0029] When the energy resources in this system are depleted and energy replenishment is required, the pressure tank filled with energy resources is towed to the vicinity of the power station via an underwater platform. An underwater robot is used to disconnect the No. 1 and No. 4 disconnectable quick-connect couplings, and the pressure tank requiring energy replenishment is towed away. The pressure tank filled with energy resources is then connected to the No. 1 and No. 4 disconnectable quick-connect couplings, and the pressure tank requiring energy replenishment is towed to the surface via the underwater platform for replenishment or replacement. Similarly, when equipment in the separate gas-generating pressure tank or the separate fuel cell stack pressure tank requires maintenance or replacement, the individual pressure tank is towed to the surface for maintenance and replacement.

[0030] The beneficial effects of this invention are as follows:

[0031] This invention features a compact and rational structure, and is easy to operate. It transforms the traditional large and heavy pressure tank power station structure into a multi-part pressure tank power station structure. The corresponding part pressure tanks can be replaced or replenished according to the working characteristics and service life of the equipment inside, eliminating the need to pull the entire pressure tank out of deep water when some equipment fails or during a single refueling, greatly reducing the difficulty of equipment maintenance and refueling. Through fuel cell power generation technology, thermoelectric power generation technology, and battery energy storage technology, it not only achieves high power generation efficiency and near-zero emissions, but also realizes multi-source underwater energy supply. Utilizing hydrogen peroxide oxygen production technology and aluminum hydrolysis hydrogen production technology, the related reaction equipment is simple, the hydrogen and oxygen raw material replenishment is greatly simplified, the gas purity is high, there are no complex byproducts, and the energy storage density is high. Furthermore, the water generated by the hydrogen peroxide oxygen production technology can be directly recycled for aluminum hydrolysis hydrogen production. In addition, the thermoelectric battery pack fully utilizes the heat released during aluminum hydrolysis hydrogen production, realizing waste heat recovery and utilization. By setting up wired and wireless power supply modules, different underwater electrical equipment can be charged.

[0032] In addition, the present invention also has the following advantages:

[0033] 1. This system breaks down the traditional large and heavy integrated power plant into several separate structures. The corresponding pressure chambers can be replaced or replenished according to the working characteristics and service life of the equipment in different chambers. There is no need to pull the entire pressure chamber out of deep water when some equipment fails or when resupplying raw materials, which greatly reduces the difficulty of equipment maintenance and raw material replenishment (traditional integrated power plants need to be pulled out of deep water when energy replenishment is required).

[0034] 2. It enables the connection and disconnection of various split-type pressure tanks in underwater seawater environments. Based on the power plant's operation and maintenance needs and energy replenishment requirements, it utilizes disconnectable quick-connect couplings and wet-plug connectors to connect and disconnect the split-type raw material pressure tanks, split-type gas production pressure tanks, and split-type fuel cell stack pressure tanks in underwater seawater environments. Disconnection allows for the cutting off of pipelines and cables, while reconnection allows for the reconnection of pipelines and cables.

[0035] 3. This system uses hydrogen peroxide and aluminum powder as raw materials for oxygen and hydrogen. In terms of oxygen storage, it does not adopt traditional high-pressure oxygen storage or liquid oxygen storage. In terms of hydrogen storage, it does not adopt high-pressure hydrogen storage, alloy hydrogen storage, or liquid hydrogen storage methods. This makes the storage equipment simple, the system safe and controllable, and the energy storage density high. It also effectively avoids the self-evaporation and safety issues of liquid oxygen storage and liquid oxygen hydrogen storage, as well as the problems of high-pressure hydrogen storage, oxygen storage, and alloy hydrogen storage systems being complex and having low energy storage density.

[0036] 4. The fuel cell stack generates electricity through an electrochemical reaction between hydrogen and oxygen produced in the separate gas-generating pressure chamber. This electricity is then supplied to the wireless power supply module and the wired power supply module via the fuel cell DC / DC converter for charging underwater electrical equipment.

[0037] 5. The high-temperature heat generated in the hydrogen production reactor and the low-temperature heat in the wall-mounted water tank are effectively utilized to generate electricity through a thermoelectric generator. The electricity is then supplied to the wireless power supply module and the wired power supply module via a thermoelectric DC / DC converter for charging underwater electrical equipment.

[0038] 6. By using the water produced by the hydrogen peroxide reaction as a raw material for hydrogen production through aluminum hydrolysis, and by using the high-temperature heat generated by hydrogen production through aluminum hydrolysis and the low-temperature temperature difference between the wall-mounted water tank and the external seawater to generate electricity, not only is the material (water produced by hydrogen peroxide) recycled and reused, but also the energy (heat generated by aluminum hydrolysis) is recycled and reused.

[0039] 7. Peak shaving and valley filling are achieved through the battery bank. When there is no underwater charging equipment, the electricity generated by the fuel cell is stored in the battery bank. When there are many underwater charging devices, and the power generated by the fuel cell is insufficient, the power in the battery bank is used to supplement it.

[0040] 8. This system is equipped with both wireless power supply module and wired power supply module (with wet plug-in connectors of different specifications), which can realize charging of underwater electrical equipment in various ways and in various specifications.

[0041] 9. This system is equipped with a wall-mounted water tank, which enables heat exchange between the low temperature of the seawater on the outer wall and the water in the wall-mounted water tank, avoiding the traditional method of opening holes in the pressure hull to introduce seawater pipes into the cabin.

[0042] 10. In the process of producing hydrogen by aluminum hydrolysis, the water generated from hydrogen peroxide is used as the reaction water for producing hydrogen by aluminum hydrolysis, eliminating the need to draw water from external seawater and realizing the recycling of water. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the system structure of the present invention.

[0044] Figure 2 This is a partial view (a) of the present invention.

[0045] Figure 3 This is a partial view (ii) of the present invention.

[0046] Figure 4 This is a partial view (iii) of the present invention.

[0047] Figure 5 This is a schematic diagram of the hydrogen production reactor of the present invention.

[0048] The components include: 1. Hydrogen peroxide storage tank; 2. No. 1 cut-off quick connector; 3. Split-type feedstock pressure chamber; 4. Metering pump; 5. Oxygen production reactor; 6. Split-type gas production pressure chamber; 7. No. 1 condenser; 8. No. 1 gas-liquid separator; 9. Generating water tank; 10. No. 2 gas-liquid separator; 11. No. 2 cut-off quick connector; 12. No. 3 cut-off quick connector; 13. Fuel cell stack; 14. Thermal management unit; 15. Fuel cell DC / DC converter; 6. Split fuel cell stack pressure chamber; 17. Wireless power supply module; 18. Wired power supply module; 19. Battery pack; 20. Thermoelectric battery DC / DC converter; 21. Product processing unit; 22. Wet plug-in connector; 23. Wall-mounted water tank; 24. No. 2 condenser; 25. Hot-side copper thermal conductive assembly; 26. Thermoelectric battery pack; 27. Hydrogen production reactor; 28. Cold-side copper thermal conductive assembly; 29. ​​Screw pump; 30. No. 4 cut-off quick connector; 31. Aluminum storage tank. Detailed Implementation

[0049] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0050] like Figures 1-5 As shown, the underwater multi-source power supply split-type power station system of this embodiment includes a split-type raw material pressure tank 3, a split-type gas production pressure tank 6, and a split-type fuel cell stack pressure tank 16 connected in sequence. The split-type raw material pressure tank 3 is equipped with a hydrogen peroxide storage tank 1 and an aluminum storage tank 31. The hydrogen peroxide storage tank 1 is connected to the interior of the split-type gas production pressure tank 6 via a pipeline. A first-type cut-off quick connector 2 is installed on the pipeline. Inside the split-type gas production pressure tank 6, a metering pump 4, an oxygen production reactor 5, a first-type condenser 7, and a first-type gas-liquid separator 8 are connected in series via pipelines. One end of the first-type gas-liquid separator 8 is simultaneously connected to a water generation tank 9 and a second-type gas-liquid separator 10. The other end of the first-type gas-liquid separator 8 and the second-type gas-liquid separator 10 are connected to the fuel cell stack 13 inside the split-type fuel cell stack pressure tank 16 via pipelines. The oxygen production reactor 5... The system is connected to the water generation tank 9, which is also connected to the hydrogen production reactor 27 via pipelines. The second gas-liquid separator 10 is connected to the second condenser 24. The output end of the aluminum storage tank 31 is connected to the hydrogen production reactor 27 via the screw pump 29. The hydrogen production reactor 27 is connected to the second condenser 24. Located inside the pressure-resistant compartment 16 of the split fuel cell stack, the fuel cell stack 13 is connected to the thermal management unit 14, the fuel cell DC / DC converter 15, and the product processing unit 21. The fuel cell DC / DC converter 15 is connected to the wireless power supply module 17, the battery pack 19, and the thermoelectric battery DC / DC converter 20 via branch pipelines. The wireless power supply module 17 is connected to the wired power supply module 18. The thermoelectric battery DC / DC converter 20 is connected to the hydrogen production reactor 27 via the wet plug connector 22.

[0051] A second disconnectable quick connector 11 is installed on the pipeline between the second gas-liquid separator 10 and the fuel cell stack 13.

[0052] A No. 3 disconnectable quick connector 12 is installed on the pipeline between the No. 1 gas-liquid separator 8 and the fuel cell stack 13.

[0053] A No. 4 disconnectable quick coupling 30 is installed on the pipeline between the aluminum storage tank 31 and the screw pump 29.

[0054] A wall-mounted water tank 23 is installed at the bottom of the hydrogen production reactor 27.

[0055] The hydrogen production reactor 27 is an underwater sealed compartment that can withstand the back pressure of seawater.

[0056] Inside the hydrogen production reactor 27, a fixed amount of aluminum powder delivered by a screw pump 29 reacts chemically with water to produce hydrogen and heat.

[0057] The outer wall of the hydrogen production reactor 27 is provided with a hot-side copper heat-conducting component 25. The high-temperature surface of the thermoelectric generator 26 is attached to the hot-side copper heat-conducting component 25, and the low-temperature surface of the thermoelectric generator 26 is attached to the cold-side copper heat-conducting component 28.

[0058] The purpose of each component is explained in detail below:

[0059] Among them, hydrogen peroxide storage tank 1 is a storage tank for storing hydrogen peroxide solution, which is installed inside the split raw material pressure tank 3 that can withstand the back pressure of seawater.

[0060] Among them, the cut-off quick coupling is a type of coupling that enables quick connection or disconnection of pipelines and can cut off the fluid flow after disconnection.

[0061] Among them, the split raw material pressure tank 3 is an underwater sealed compartment that can withstand the back pressure of seawater, and its interior is equipped with a hydrogen peroxide storage tank 1 and an aluminum storage tank 31.

[0062] Among them, metering pump 4 is a pump used to provide pressure head to pipelines and has a metering function.

[0063] Among them, oxygen-producing reactor 5 is a container used for the reaction of hydrogen peroxide to produce oxygen and water.

[0064] Among them, the split gas-generating pressure chamber 6 is an underwater sealed chamber that can withstand the back pressure of seawater. After being processed by the equipment inside, it ultimately produces hydrogen and oxygen for the fuel cell stack 13, as well as electricity generated by thermoelectric power generation.

[0065] Among them, condenser No. 1 7 and condenser No. 2 24 are devices for condensing high-temperature gas-liquid mixtures.

[0066] Among them, No. 1 gas-liquid separator 8 and No. 2 gas-liquid separator 10 are devices for separating gas and liquid oxygen.

[0067] Among them, the water generation tank 9 is a device for collecting generated water. This system is used to collect the water generated after the hydrogen peroxide reaction.

[0068] Among them, fuel cell stack 13 is a power generation device that uses hydrogen as fuel and oxygen as oxidant to convert chemical energy into electrical energy through an electrochemical reaction.

[0069] Among them, the thermal management unit 14 is a device for dynamically managing the heat generated by the operation of the fuel cell stack 13, ensuring that the stack continues to operate within a suitable temperature range.

[0070] Among them, the fuel cell DC / DC converter 15 is a device that can boost or reduce the voltage of DC power. In this system, it is a device that boosts the low-voltage DC power generated by the fuel cell into high-voltage DC power within a specified range.

[0071] Among them, the split-type fuel cell stack pressure-resistant chamber 16 is an underwater sealed chamber that can withstand the back pressure of seawater. The power generation system of the fuel cell stack 13 and the interface for charging external equipment are arranged inside it.

[0072] Among them, the wireless power supply module 17 is a method of charging underwater electrical equipment such as unmanned underwater vehicles through wireless charging.

[0073] Among them, the wired power supply module 18 is composed of several wet-plug electrical connectors of different specifications, which charge underwater electrical equipment such as unmanned underwater vehicles through wired charging.

[0074] Among them, the battery pack 19 is a device for storing direct current. This system is used to store the electricity generated by the fuel cell stack 13 and the thermoelectric cell.

[0075] Among them, the thermoelectric battery DC / DC converter 20 is a device that can boost or reduce DC power. In this system, it is a device that boosts the low-voltage DC power generated by the thermoelectric battery into high-voltage DC power within a specified range.

[0076] Among them, the product processing unit 21 is a device for processing the water and exhaust gas generated by the fuel cell stack 13.

[0077] Among them, the wet plug-in connector 22 is an electrical connector that can withstand seawater pressure and can be connected and disconnected in a seawater environment. This system is used for the connection and disconnection of electrical power between the separate gas-generating pressure tank 6 and the separate fuel cell stack pressure tank 16.

[0078] Among them, the wall-mounted water tank 23 is a heat exchange water tank with good thermal conductivity that is attached to the inner shell of the split gas-generating pressure chamber 6. This system transfers the low temperature of the external seawater to the inside of the water tank through heat conduction, thereby cooling the cold end of the thermoelectric generator pack 26.

[0079] Among them, the hot-side copper heat-conducting component 25 is composed of copper sheet components with good thermal conductivity. This system transfers the heat from the outer wall of the hydrogen production reactor 27 to the hot side of the thermoelectric generator 26.

[0080] Among them, the thermoelectric generator pack 26 is a device that uses temperature difference based on the first thermoelectric effect principle to directly convert heat energy into electrical energy. In this system, multiple thermoelectric generators are connected in series and parallel to form a thermoelectric generator pack.

[0081] Among them, the hydrogen production reactor 27 is an underwater sealed chamber that can withstand the back pressure of seawater. Inside the chamber, a certain amount of aluminum powder delivered by the screw pump 29 reacts with water to produce hydrogen and heat. The heat is conducted to the thermoelectric generator 26 through the hot-side copper heat-conducting component 25.

[0082] Among them, the cold-side copper heat-conducting component 28 is composed of copper sheet components with good thermal conductivity. This system transfers the cooling energy to the cold side of the thermoelectric battery pack 26.

[0083] Among them, screw pump 29 is a positive displacement pump that can output solid powder.

[0084] Among them, aluminum powder storage tank 31 is a device for storing aluminum powder raw materials.

[0085] The underwater multi-source power supply split-type power station system described in this invention has the following main working principle:

[0086] The energy required for power generation of the split-type power station is stored in the hydrogen peroxide storage tank 1 and aluminum storage tank 31 in the split-type raw material pressure tank 3. When the energy is exhausted, the disconnectable quick connector between the split-type raw material pressure tank 3 and the split-type gas production pressure tank 6 is disconnected, and the split-type raw material pressure tank 3 is lifted to the water surface for energy replacement and replenishment. The relevant equipment in the split-type gas production pressure tank 6 uses hydrogen peroxide oxygen production technology and aluminum hydrolysis hydrogen production technology to produce hydrogen and oxygen for use in the fuel cell stack 13 through chemical reaction and treatment of the provided energy raw materials. The water generated by hydrogen peroxide oxygen production can be directly recycled by aluminum hydrolysis hydrogen production. The high temperature heat generated by the reaction in the hydrogen production reactor 27 and the low temperature in the wall-mounted water tank 23 generate electricity through the temperature difference power generation battery pack 26. The DC / DC converter supplies power to the wireless power supply module 17 and the wired power supply module 18 for charging underwater electrical equipment. The hydrogen and oxygen generated in the split gas-producing pressure chamber 6 are electrochemically reacted by the fuel cell stack 13 to generate electricity, which is then supplied to the wireless power supply module 17 and the wired power supply module 18 through the fuel cell DC / DC converter 15 for charging underwater electrical equipment. The battery storage group is used for peak shaving and valley filling. When there is no underwater equipment charging, the electricity generated by the fuel cell is stored in the battery storage group 19. When there are many underwater charging devices and the electricity generated by the fuel cell is insufficient, it is supplemented by the electricity in the battery storage group 19. In this way, underwater multi-source power supply is realized through fuel cell power generation technology, thermoelectric power generation technology and battery energy storage technology.

[0087] The workflow of a multi-source underwater power station system is as follows:

[0088] (a) Storage of energy raw materials for split-type power plants:

[0089] A hydrogen peroxide storage tank 1 and an aluminum storage tank 31 are installed in the separate raw material pressure tank 3. The hydrogen peroxide storage tank 1 is used to store hydrogen peroxide solution for oxygen production, and the aluminum storage tank is used to store aluminum powder for hydrogen production. The outlet pipelines of the hydrogen peroxide storage tank 1 and the aluminum storage tank 31 are equipped with cut-off quick connectors for connecting and disconnecting the interface pipeline between the separate raw material pressure tank 3 and the separate gas production pressure tank 6 in the seawater environment.

[0090] (ii) Hydrogen peroxide to produce oxygen:

[0091] Hydrogen peroxide in hydrogen peroxide storage tank 1 is metered to oxygen generation reactor 5 via metering pump 4 through cut-off quick connector 2. Under the action of catalyst, hydrogen peroxide decomposes to produce oxygen and water. The decomposition reaction is: 2H2O2→2H2O+O2↑. The water generated after the reaction enters generation water tank 9. The mixture of oxygen and water vapor is cooled by condenser 7 and then separated by gas-liquid separator 8. The separated oxygen is sent to the inlet of fuel cell stack 13 through cut-off quick connector 12, and the separated water enters generation water tank 9.

[0092] (III) Hydrogen production by aluminum hydrolysis:

[0093] Aluminum powder in aluminum storage tank 31 is quantitatively delivered to hydrogen production reactor 27 by screw pump 29 through No. 4 cut-off quick connector 30. Water in water generation tank 9 is also delivered to hydrogen production reactor 27. Aluminum decomposes to produce hydrogen under the action of catalyst. The decomposition reaction formula is: 2Al + 6H2O → 2Al(OH)3 + 3H2↑. The mixture of hydrogen and water vapor generated after the reaction is cooled by No. 2 condenser 24 and then separated by No. 2 gas-liquid separator 10. The separated hydrogen is delivered to the inlet end of fuel cell stack 13 through No. 2 cut-off quick connector 11.

[0094] (iv) Thermoelectric power generation and storage:

[0095] In the hydrogen production reactor 27, due to the high reaction temperature, heat is released while producing hydrogen. A hot-side copper heat-conducting component 25 is located on the outer wall of the hydrogen production reactor 27. The high-temperature surface of the thermoelectric generator 26 is attached to the hot-side copper heat-conducting component 25, transferring the released heat to the high-temperature surface of the thermoelectric generator 26 via heat conduction. The low-temperature surface of the thermoelectric generator 26 is attached to the cold-side copper heat-conducting component 28, transferring the low temperature from the wall-mounted water tank 23 to the low-temperature surface of the thermoelectric generator 26 via heat conduction. Thus, the thermoelectric generator 26 generates electricity through the temperature difference between the high temperature on the high-temperature side and the low temperature on the low-temperature side. The generated electricity is supplied to the battery pack 19 via the wet-plug connector 22 and the thermoelectric battery DC / DC converter 20 for charging underwater electrical equipment.

[0096] (v) Bulkhead heat exchange and cooling:

[0097] The wall of the wall-mounted water tank 23 is attached to the inner wall of the split gas-producing pressure tank 6. The low temperature outside the pressure tank is continuously conducted to the cooling water in the wall-mounted water tank 23 through heat conduction, thereby forming a heat exchange between the external seawater and the water in the wall-mounted water tank 23. By using the heat conduction of the pressure tank shell in this way, it is not necessary to open the pressure tank to bring seawater into the tank. This not only improves the structural safety but also reduces the need for traditional heat exchangers and related pipelines.

[0098] (vi) Fuel cell power generation and storage:

[0099] Hydrogen and oxygen enter the fuel cell stack 13 through the second and third cut-off quick connectors 11 and 12, where they undergo an electrochemical reaction to generate electricity. This electricity is then supplied to the battery pack 19 via the fuel cell DC / DC converter 15 or directly to the wireless power supply module 17 and the wired power supply module 18. The battery pack is used for peak shaving and valley filling. When there is no underwater charging equipment, the electricity generated by the fuel cell is stored in the battery pack 19. When there are many underwater charging devices and the electricity generated by the fuel cell is insufficient, it is supplemented by the electricity in the battery pack 19. In this way, underwater multi-source power supply is achieved through fuel cell power generation technology, thermoelectric power generation technology, and battery energy storage technology.

[0100] (vii) Raw material replenishment and equipment replacement and maintenance:

[0101] When the energy resources in this system are depleted and energy replenishment is required, the pressure tank 3 filled with energy resources is towed to the vicinity of the power station via an underwater platform. An underwater robot is used to disconnect the No. 1 cut-off quick connector 2 and the No. 4 cut-off quick connector 30, and the pressure tank 3 requiring energy replenishment is towed away. The pressure tank 3 filled with energy resources is then connected to the No. 1 cut-off quick connector 2 and the No. 4 cut-off quick connector 30, and the pressure tank requiring energy replenishment is towed to the surface via the underwater platform for replenishment or replacement. Similarly, when the equipment in the pressure tank 6 for gas production or the pressure tank 16 for fuel cell stack needs maintenance or replacement, the individual pressure tank is towed to the surface for maintenance and replacement.

[0102] This invention utilizes fuel cell power generation technology, thermoelectric power generation technology, and battery energy storage technology, achieving not only high power generation efficiency and near-zero emissions, but also underwater multi-source energy supply. It employs hydrogen peroxide oxygen production technology and aluminum hydrolysis hydrogen production technology, resulting in no complex byproducts and high energy storage density. Furthermore, the thermoelectric power generation battery pack fully utilizes the heat released during the aluminum hydrolysis hydrogen production process, achieving waste heat recovery and utilization.

[0103] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. An underwater multi-source power supply split-type power station system, characterized in that: The system includes a separate raw material pressure chamber (3), a separate gas production pressure chamber (6), and a separate fuel cell stack pressure chamber (16) connected in sequence. The separate raw material pressure chamber (3) is equipped with a hydrogen peroxide storage tank (1) and an aluminum storage tank (31). The hydrogen peroxide storage tank (1) is connected to the interior of the separate gas production pressure chamber (6) through a pipeline. A first disconnectable quick connector (2) is installed on the pipeline. The interior of the separate gas production pressure chamber (6) is connected in series through pipelines to a metering pump (4), an oxygen production reactor (5), a first condenser (7), and a first gas-liquid separator (8). One end of the No. 1 gas-liquid separator (8) is connected to both the generating water tank (9) and the No. 2 gas-liquid separator (10). The other end of the No. 1 gas-liquid separator (8) and the No. 2 gas-liquid separator (10) are connected to the fuel cell stack (13) inside the pressure-resistant compartment (16) of the split stack via pipelines. The oxygen-producing reactor (5) is connected to the generating water tank (9). The generating water tank (9) is also connected to the hydrogen-producing reactor (27) via pipelines. The No. 2 gas-liquid separator (10) is connected to the No. 2 condenser (24). The output end of the aluminum storage tank (31) is connected to the screw pump ( 29) Connected to the hydrogen production reactor (27), which is connected to the second condenser (24); located inside the split stack pressure chamber (16), the fuel cell stack (13) is connected to the thermal management unit (14), the fuel cell DC / DC converter (15), and the product processing unit (21), respectively. The fuel cell DC / DC converter (15) is connected to the wireless power supply module (17), the battery pack (19), and the thermoelectric battery DC / DC converter (20) through branch pipes. The wireless power supply module (17) is connected to the... The line power supply module (18) and the thermoelectric battery DC / DC converter (20) are connected to the hydrogen production reactor (27) via a wet plug connector (22); a second cut-off quick connector (11) is installed on the pipeline between the second gas-liquid separator (10) and the fuel cell stack (13); a third cut-off quick connector (12) is installed on the pipeline between the first gas-liquid separator (8) and the fuel cell stack (13); a fourth cut-off quick connector (30) is installed on the pipeline between the aluminum storage tank (31) and the screw pump (29). The outer wall of the hydrogen production reactor (27) is provided with a hot-side copper heat-conducting component (25). The high-temperature surface of the thermoelectric generator (26) is attached to the hot-side copper heat-conducting component (25), and the low-temperature surface of the thermoelectric generator (26) is attached to the cold-side copper heat-conducting component (28).

2. The underwater multi-source power supply split-type power station system as described in claim 1, characterized in that: A wall-mounted water tank (23) is installed at the bottom of the hydrogen production reactor (27).

3. The underwater multi-source power supply split-type power station system as described in claim 1, characterized in that: Inside the hydrogen production reactor (27), a fixed amount of aluminum powder delivered by a screw pump (29) reacts with water to produce hydrogen and heat.

4. The working process of an underwater multi-source power supply split-type power station system as described in claim 1, characterized in that: The process includes the following: First, the storage of energy raw materials for split-type power plants: A hydrogen peroxide storage tank (1) and an aluminum storage tank (31) are installed in the separate raw material pressure tank (3). The hydrogen peroxide storage tank (1) is used to store hydrogen peroxide solution for oxygen production, and the aluminum storage tank (31) is used to store aluminum powder for hydrogen production. Both the outlet pipes of the hydrogen peroxide storage tank (1) and the aluminum storage tank (31) have cut-off quick connectors for connecting and disconnecting the interface pipes between the separate raw material pressure tank (3) and the separate gas production pressure tank (6) in the seawater environment. Secondly, hydrogen peroxide is used to produce oxygen: Hydrogen peroxide in the hydrogen peroxide storage tank (1) is quantitatively delivered to the oxygen generation reactor (5) by the metering pump (4) through the No. 1 cut-off quick connector (2). Under the action of the catalyst, hydrogen peroxide decomposes to produce oxygen and water. The water generated after the reaction enters the generation water tank (9). The mixture of oxygen and water vapor generated is cooled by the No. 1 condenser (7) and then separated by the No. 1 gas-liquid separator (8). The separated oxygen is sent to the inlet end of the fuel cell stack (13) through the No. 3 cut-off quick connector (12). The separated water enters the generation water tank (9). Then, hydrogen is produced by the hydrolysis of aluminum: Aluminum powder in aluminum storage tank (31) is quantitatively sent to hydrogen production reactor (27) by screw pump (29) through No. 4 cut-off quick connector (30). Water in water generation tank (9) is also sent to hydrogen production reactor (27). Aluminum decomposes to produce hydrogen under the action of catalyst. The mixture of hydrogen and water vapor generated after the reaction is cooled by No. 2 condenser (24) and then separated by No. 2 gas-liquid separator (10). The separated hydrogen is sent to the inlet end of fuel cell stack (13) through No. 2 cut-off quick connector (11). Then, the thermoelectric battery pack (26) generates and stores electricity: In the hydrogen production reactor (27), due to the high reaction temperature, heat is released while hydrogen is produced. There is a hot-side copper heat-conducting component (25) on the outer wall of the hydrogen production reactor (27). The high-temperature surface of the thermoelectric generator (26) is attached to the hot-side copper heat-conducting component (25), and the heat released above is transferred to the high-temperature surface of the thermoelectric generator (26) through heat conduction. The low-temperature surface of the thermoelectric generator (26) is attached to the cold-side copper heat-conducting component (28), and the low temperature in the wall-mounted water tank (23) is transferred to the low-temperature surface of the thermoelectric generator (26) through heat conduction. In this way, the thermoelectric generator (26) forms a temperature difference through the high temperature on the high-temperature side and the low temperature on the low-temperature side to generate electricity. The generated electrical energy is supplied to the battery pack (19) through the wet plug connector (22) and the thermoelectric battery DC / DC converter (20) for charging underwater electrical equipment. Secondly, bulkhead heat exchange cooling: The wall of the wall-mounted water tank (23) is attached to the inner wall of the split gas-generating pressure tank (6). The low temperature outside the pressure tank is continuously conducted to the cooling water in the wall-mounted water tank (23) through heat conduction, thereby forming a heat exchange between the external seawater and the water in the wall-mounted water tank (23). By using the heat conduction of the pressure tank shell, the need to open holes in the pressure tank to bring seawater into the tank is avoided. This not only improves the structural safety but also reduces the need for traditional heat exchangers and related pipelines. Secondly, fuel cell power generation and storage: Hydrogen and oxygen enter the fuel cell stack (13) through the No. 2 cut-off quick connector (11) and the No. 3 cut-off quick connector (12) to undergo an electrochemical reaction and generate electrical energy. The electrical energy is supplied to the battery pack (19) through the fuel cell DC / DC converter (15) or directly to the wireless power supply module (17) and the wired power supply module (18). The battery pack is used for peak shaving and valley filling. When there is no underwater equipment charging, the electricity generated by the fuel cell is stored in the battery pack (19). When there are many underwater charging devices, the electrical energy generated by the fuel cell is insufficient, and it is supplemented by the electrical energy in the battery pack (19). In this way, underwater multi-source energy supply is realized through fuel cell power generation technology, thermoelectric power generation technology and battery energy storage technology. Finally, the replenishment of raw materials and the replacement and maintenance of equipment: When the energy raw materials in this system are depleted and energy replenishment is required, the split raw material pressure tank (3) filled with energy raw materials is towed to the vicinity of this power station via an underwater platform. The No. 1 cut-off quick connector (2) and the No. 4 cut-off quick connector (30) are disconnected by an underwater robot. The split raw material pressure tank (3) that needs energy replenishment is towed away. The split raw material pressure tank (3) filled with energy raw materials is connected to the No. 1 cut-off quick connector (2) and the No. 4 cut-off quick connector (30). The split raw material pressure tank that needs energy replenishment is towed to the water surface via an underwater platform for replenishment or replacement. When the equipment in the split gas production pressure tank (6) or the split fuel cell stack pressure tank (16) needs maintenance or replacement, the individual pressure tank is towed to the water surface for maintenance and replacement.

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