Ship and power generation system thereof

Abstract

The utility model provides a ship and a power generation system thereof. The power generation system comprises a storage tank, an oxygen supply module, a fuel cell and a separation tank. The storage tank is used for storing hydrogen fuel. A gas outlet is formed in the storage tank, and the gas outlet is communicated with a gas conveying pipeline for conveying gaseous hydrogen. The oxygen supply module is used for providing oxygen. The fuel cell is communicated with the gas conveying pipeline and the oxygen supply module, and the fuel cell is used for receiving gaseous hydrogen and oxygen and generating electric energy. The fuel cell is used for being electrically connected with a power utilization module. The separation tank is arranged on the communicating pipeline, is communicated with the upstream of the fuel cell through the communicating pipeline, and is used for separating liquefied hydrogen and gaseous hydrogen. Through cooperation of the gas conveying pipeline and the separation tank, gaseous hydrogen in the storage tank is reasonably utilized and directly used as fuel for generating electric energy by the fuel cell, and the separation tank also has a storage function, so that liquid hydrogen separated from the separation tank can be recycled subsequently, and the utilization rate of energy is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of power generation, particularly relates to a ship and its power generation system. BACKGROUND

[0002] Fuel cell is a kind of high-efficiency power generation device that converts chemical energy stored in fuel and oxidant into electrical energy through electrochemical reaction.Different from traditional internal combustion engine, it needs fuel and oxidant, but does not need to burn, and can complete chemical reaction to realize power generation function under low temperature conditions.Especially, proton exchange membrane fuel cell widely used in ships needs fuel including hydrogen and oxygen, and the reaction product of the two is mainly water, which is pollution-free to environment and meets the environmental protection requirements of emission reduction and low carbon.

[0003] At present, in ship transportation, hydrogen is usually stored in hydrogen storage tank in liquid form.However, liquid hydrogen cannot be directly used for fuel cell power generation, therefore, in the prior art, liquid hydrogen in hydrogen storage tank is often transported to a heater by hydrogen extraction pump to make it gasify and then be used.

[0004] However, for the gaseous hydrogen gas evaporated from liquid hydrogen in the hydrogen storage tank, the gaseous hydrogen gas is not utilized in actual work, causing certain resource waste. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a ship and its power generation system, wherein the power generation system can reasonably utilize gaseous hydrogen gas in the storage tank to generate electric energy.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] According to one aspect of the present application, the present application provides a power generation system for power supply, which comprises:

[0008] A storage tank for storing hydrogen fuel, wherein the storage tank is provided with a gas outlet, and the gas outlet is connected with a gas conveying pipeline for conveying gaseous hydrogen gas;

[0009] An oxygen supply module for providing oxygen;

[0010] A fuel cell in communication with the gas conveying pipeline, wherein the fuel cell is in communication with the oxygen supply module, the fuel cell is used for receiving the gaseous hydrogen gas and oxygen, and is used for generating electric energy, and the fuel cell is electrically connected with a power utilization module.

[0011] A separation tank arranged on the gas conveying pipeline and in communication with the upstream of the fuel cell through the gas conveying pipeline, wherein the separation tank is used for separating liquefied hydrogen gas and gaseous hydrogen gas.

[0012] In some embodiments, the separation tank further comprises a backflow port, which is in communication with the storage tank through a backflow pipeline, so as to backflow the liquid hydrogen into the storage tank.

[0013] The backflow pipeline is provided with a control valve for regulating the flow thereof.

[0014] In some embodiments, the power generation system comprises a heater, which is in communication with the gas pipeline, and is located upstream of the fuel cell, and is used for heating the gaseous hydrogen delivered by the gas pipeline.

[0015] In some embodiments, the power generation system comprises a compressor, which is in communication with the gas pipeline, and is located upstream of the fuel cell, and is used for pressurizing the gaseous hydrogen delivered by the gas pipeline.

[0016] The gas pipeline is provided with a first regulating valve for regulating the flow thereof, which is located between the separation tank and the compressor.

[0017] In some embodiments, the power generation system comprises a DC / DC converter, an input end of which is electrically connected with the fuel cell, and an output end of which is electrically connected with the power consumption module.

[0018] In some embodiments, the power generation system further comprises an energy storage device, an input end of which is electrically connected with the output end of the DC / DC converter, and an output end of which is electrically connected with the power consumption module.

[0019] In some embodiments, the power generation system further comprises a superconducting motor, an input end of which is electrically connected with the output end of the DC / DC converter; and / or, an input end of which is electrically connected with the energy storage device.

[0020] The output end of the superconducting motor is used for being electrically connected with a power module.

[0021] In some embodiments, the storage tank is further provided with a liquid outlet, which is communicated with a liquid delivery pipeline for delivering liquid hydrogen; the liquid delivery pipeline is provided with a second regulating valve for regulating the flow thereof.

[0022] The superconducting motor has a communicating inlet and an output port, the inlet of the superconducting motor is communicated with the liquid delivery pipeline, the superconducting motor is used for heat exchanging with the liquid hydrogen to maintain the superconducting state and generate gaseous hydrogen; the output port of the superconducting motor is communicated with a communication pipeline for delivering gaseous hydrogen; the communication pipeline is communicated with the fuel cell, and is used for delivering gaseous hydrogen to the gas pipeline.

[0023] In some embodiments, a gas flow meter is arranged on the gas pipeline, and the gas flow meter is configured to detect a flow signal of the gaseous hydrogen inside the gas pipeline.

[0024] A liquid flow meter is arranged on the liquid pipeline, and the liquid flow meter is configured to detect a flow signal of the liquid hydrogen inside the liquid pipeline.

[0025] A hydrogen extraction pump is arranged inside the storage tank, and the hydrogen extraction pump is in communication with the liquid pipeline, and the hydrogen extraction pump is configured to pump the liquid hydrogen in the storage tank into the liquid pipeline.

[0026] In some embodiments, the power generation system comprises a frequency converter, an input end of the frequency converter is electrically connected with an output end of the DC / DC converter, and / or an input end of the frequency converter is electrically connected with an output end of the energy storage device.

[0027] An output end of the frequency converter is electrically connected with an input end of the superconducting motor.

[0028] According to another aspect of the present application, the present application also provides a ship, comprising a ship body, a power module, a power consumption module and the power generation system according to any one of the above, the power module, the power consumption module and the power generation system are arranged on the ship body, and the power generation system is electrically connected with the power module and the power consumption module to supply power to the power module and the power consumption module.

[0029] According to the above technical solution, the present application has at least the following advantages and positive effects:

[0030] In the present application, the fuel cell is connected with the storage tank through the gas pipeline, so that the gaseous hydrogen inside the storage tank can directly flow to the fuel cell through the gas pipeline to provide hydrogen fuel for the fuel cell, that is, the power supply system in the present application reasonably utilizes the gaseous hydrogen in the storage tank to directly serve as the fuel for generating electric energy for the fuel cell, so as to avoid the waste of this part of energy and improve the energy utilization rate.

[0031] In addition, during the transportation of the gaseous hydrogen in the pipeline, the gaseous hydrogen is easy to be liquefied due to the absorption of the coldness of the pipe wall, therefore, the present application sets a separation tank on the gas pipeline, separates the liquefied hydrogen and the gaseous hydrogen by using the separation tank, and only transports the gaseous hydrogen to the downstream fuel cell to supply fuel for the fuel cell, at the same time, the separation tank can temporarily store the liquefied hydrogen to realize the recovery of the liquefied hydrogen during the transportation, so as to reuse this part of liquid hydrogen in the future to improve the energy utilization rate. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a structural schematic diagram of the power generation system in the present embodiment.

[0033] The reference signs are explained as follows:

[0034] 100, power module; 200, power consumption module; 300, power generation system; 1, storage tank; 2, oxygen supply module; 3, fuel cell; 4, separation tank; 501, gas conveying pipeline; 502, liquid conveying pipeline; 503, oxygen supply pipeline; 504, communication pipeline; 505, backflow pipeline; 601, first regulating valve; 602, second regulating valve; 603, third regulating valve; 604, adjusting valve; 605, control valve; 607, gas flow meter; 608, liquid flow meter; 7, warmer; 8, compressor; 9, DC / DC converter; 10, energy storage device; 11, frequency converter; 12, superconducting motor; 13, hydrogen extraction pump. DETAILED DESCRIPTION

[0035] The typical embodiments embodying the features and advantages of the present application will be described in detail in the following description. It should be understood that the present application can be varied in a wide range of embodiments, none of which depart from the scope of the present application, and that the description and drawings are to be considered as illustrative only and not restrictive in nature.

[0036] In the description of the present application, it should be understood that the indication of direction or position relationship (such as up, down, left, right, front and back, etc.) in the embodiments shown in the drawings is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation. When these elements are in the position shown in the drawings, these descriptions are appropriate. If the position of these elements changes, the indication of direction also changes accordingly.

[0037] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0038] The present application provides a power generation system for power supply.

[0039] The specific embodiments of the power generation system of the present application are described in detail below with reference to the accompanying drawings.

[0040] Figure 1 The structure schematic diagram of the power generation system 300 in the present embodiment.

[0041] Reference Figure 1The power generation system 300 comprises a storage tank 1, an oxygen supply module 2, a fuel cell 3 and a separation tank 4. The storage tank 1 is used for storing hydrogen fuel. The storage tank 1 is provided with a gas outlet, and the gas outlet is communicated with a gas conveying pipeline 501 for conveying gaseous hydrogen. The oxygen supply module 2 is used for providing oxygen. The fuel cell 3 is communicated with the gas conveying pipeline 501, and the fuel cell 3 is communicated with the oxygen supply module 2. The fuel cell 3 is used for receiving gaseous hydrogen and oxygen, and is used for generating electric energy. The fuel cell 3 is electrically connected with the power utilization module 200. The separation tank 4 is arranged on the communication pipeline 504 and is communicated with the fuel cell 3 through the communication pipeline 504. The separation tank 4 is used for separating liquefied hydrogen and gaseous hydrogen.

[0042] In the present application, the fuel cell 3 is connected with the storage tank 1 through the gas conveying pipeline 501, so that the gaseous hydrogen in the storage tank 1 can flow to the fuel cell 3 directly through the gas conveying pipeline 501 to provide hydrogen fuel for the fuel cell 3. That is, the power supply system in the present application reasonably utilizes the gaseous hydrogen in the storage tank 1, so that it can be directly used as fuel for the fuel cell 3 to generate electric energy, thereby avoiding the waste of this part of energy and improving the utilization rate of energy.

[0043] In addition, the gaseous hydrogen is easy to be liquefied due to absorbing the cold of the pipeline wall during the conveying process in the pipeline. Therefore, the separation tank 4 is arranged on the gas conveying pipeline 501 in the present application, and the separation tank 4 is used for separating the liquefied hydrogen and the gaseous hydrogen, so that only the gaseous hydrogen is conveyed to the fuel cell 3 downstream to supply fuel for the fuel cell 3. At the same time, the separation tank 4 can temporarily store the liquefied hydrogen to realize the recovery of the liquefied hydrogen during the conveying process, so as to facilitate the subsequent reuse of the part of liquid hydrogen, thereby improving the utilization rate of energy.

[0044] In the embodiment, the storage tank 1 can be any pressure type cryogenic container.

[0045] The storage tank 1 is hollow inside and can be used for storing hydrogen fuel. It should be noted that the hydrogen fuel in the storage tank 1 is in a state of coexistence of gaseous hydrogen and liquid hydrogen.

[0046] The storage tank 1 is provided with a gas outlet communicated with the inside of the storage tank 1, and the gas outlet is communicated with a gas conveying pipeline 501 for conveying gaseous hydrogen.

[0047] Optionally, the gas conveying pipeline 501 is provided with a first regulating valve 601 for regulating the flow thereof. The gas conveying pipeline 501 is also provided with a third regulating valve 603 for regulating the flow thereof. The third regulating valve 603 is located upstream of the first regulating valve 601.

[0048] Optionally, the gas pipeline 501 is further provided with a gas flow meter 607 for detecting the flow signal of the gaseous hydrogen inside the gas pipeline 501. In actual application, the flow of the gaseous hydrogen inside the gas pipeline 501 can be adjusted according to the flow signal of the gaseous hydrogen, so as to facilitate the control and adjustment and improve the stability of the gaseous hydrogen delivery.

[0049] The tank 1 is further provided with a liquid outlet communicating with the inside of the tank 1, and the liquid outlet is connected with a liquid pipeline 502 for delivering the liquid hydrogen.

[0050] Optionally, the liquid pipeline 502 is further provided with a liquid flow meter 608 for detecting the flow signal of the liquid hydrogen inside the liquid pipeline 502. In actual application, the flow of the liquid hydrogen inside the liquid pipeline 502 can be adjusted according to the flow signal of the liquid hydrogen, so as to facilitate the control and adjustment and improve the stability of the liquid hydrogen delivery.

[0051] The tank 1 is further provided with a liquid inlet communicating with the inside of the tank 1, and the liquid inlet is used for delivering the hydrogen fuel into the tank 1.

[0052] The fuel cell 3 is connected with the oxygen supply module 2, and the oxygen supply module 2 is used for supplying oxygen to the fuel cell 3. Specifically, the fuel cell 3 is connected with the oxygen supply module 2 through an oxygen supply pipeline 503. The oxygen supply module 2 can be an oxygen tank 1.

[0053] Optionally, the oxygen supply pipeline 503 is provided with an adjusting valve 604, which can adjust the flow of the oxygen delivered by the oxygen supply pipeline 503 by adjusting the opening degree of the adjusting valve 604, so as to improve the stability of the oxygen delivery. Meanwhile, the adjusting valve 604 can be used to control the on-off of the oxygen supply pipeline 503 when the oxygen supply is not needed.

[0054] The fuel cell 3 is connected with the gas pipeline 501, so that the gaseous hydrogen in the tank 1 can flow into the fuel cell 3 through the gas pipeline 501.

[0055] The fuel cell 3 is a proton exchange membrane fuel cell 3, and the working principle thereof is based on the electrochemical reaction of hydrogen and oxygen.

[0056] Specifically, the fuel cell 3 comprises a shell, a cathode, an anode and a proton exchange membrane arranged in the shell. The shell has a hydrogen inlet and an oxygen inlet, the hydrogen inlet is connected with the gas pipeline 501, and the oxygen inlet is connected with the oxygen supply pipeline 503. The anode is arranged corresponding to the hydrogen inlet, so that the gaseous hydrogen flowing into the shell can surround the outer periphery of the anode. The cathode is arranged corresponding to the oxygen inlet, so that the oxygen flowing into the shell can surround the outer periphery of the cathode. The proton exchange membrane is arranged between the cathode and the anode.

[0057] Wherein, the gaseous hydrogen flowing to the anode can be decomposed into proton and electron under the action of the anode catalyst, the proton flows to the cathode through the proton exchange membrane, and the electron flows to the cathode through the external circuit, thereby generating electric energy. The oxygen flowing to the cathode as an oxidant reacts with the proton and the electron to generate water. That is, the fuel cell 3 generates water as the main substance in the process of generating electric energy, which is pollution-free to the environment and meets the environmental protection requirements.

[0058] In the process of generating electric energy by the fuel cell 3, the oxygen supply condition directly affects the performance of the membrane fuel cell 3, and sufficient and stable oxygen supply can ensure the smooth progress of the cathode reaction, so that the fuel cell 3 can output stable power. If the oxygen supply is insufficient, the cathode reaction rate will be reduced, and the output voltage and power of the fuel cell 3 will also decrease. Therefore, the valve 604 can be adjusted to adjust the oxygen flow, thereby improving the stability of the fuel cell 3.

[0059] The separation tank 4 is arranged on the gas conveying pipeline 501 and is connected to the upstream of the fuel cell 3 through the gas conveying pipeline 501. The separation tank 4 is used to separate the liquefied hydrogen and the gaseous hydrogen. Since the gaseous hydrogen is easy to be liquefied by absorbing the cold of the pipeline wall during the conveying process inside the pipeline, the separation tank 4 is used to separate the liquefied hydrogen and the gaseous hydrogen, and only the gaseous hydrogen is conveyed to the downstream fuel cell 3 for fuel supply. Meanwhile, the separation tank 4 can temporarily store the liquefied hydrogen, so as to recover the liquefied hydrogen during the conveying process, thereby facilitating the reuse of the liquefied hydrogen, and improving the utilization rate of energy.

[0060] Wherein, the separation tank 4 is located between the first regulating valve 601 and the third regulating valve 603. In actual application, when it is needed to supply gaseous hydrogen to the fuel cell 3, the first regulating valve 601 and the third regulating valve 603 are both in the open state. In addition, when the amount of gaseous hydrogen is greater than the amount required by the fuel cell 3, the opening degree of the first regulating valve 604 can be adjusted to adjust the flow of gaseous hydrogen flowing to the fuel cell 3, so that more gaseous hydrogen is temporarily stored in the separation tank 4 or is liquefied into liquid hydrogen, thereby reducing the waste of unnecessary gaseous hydrogen. When it is not needed to supply gaseous hydrogen to the fuel cell 3, and the pressure inside the storage tank 1 exceeds the set pressure, the third regulating valve 603 can be opened and the first regulating valve 601 is in the closed state, so that the gaseous hydrogen enters the separation tank 4 through the gas conveying pipeline 501, and part of the gaseous hydrogen is stored in the separation tank 4, thereby reducing the pressure inside the storage tank 1; and when it is needed to supply gaseous hydrogen to the fuel cell 3 again, the gaseous hydrogen temporarily stored in the separation tank 4 can be preferentially conveyed to the fuel cell 3.

[0061] The pressure detector is arranged on the storage tank 1 to detect the pressure signal in the storage tank 1 in real time, so as to monitor the pressure in the storage tank 1.

[0062] Specifically, the separation tank 4 is provided with a gas inlet and a gas outlet, which are in communication with the inside of the separation tank 4. The gas inlet is in communication with the gas outlet of the storage tank 1, and the gas outlet is in communication with the hydrogen inlet of the fuel cell 3, so as to deliver the separated gaseous hydrogen to the fuel cell 3.

[0063] The separation tank 4 further comprises a backflow port, which is in communication with the liquid inlet of the storage tank 1 through a backflow pipeline 505, so as to enable the liquid hydrogen to flow back to the storage tank 1, thereby recycling the liquefied hydrogen during the delivery process, so as to reuse the liquid hydrogen, thereby improving the utilization rate of energy.

[0064] Optionally, the backflow pipeline 505 is provided with a control valve 605 for controlling the opening and closing thereof. When the liquid hydrogen in the separation tank 4 reaches a set value, the control valve 605 can be opened to recycle the re-liquefied hydrogen into the storage tank 1. A liquid level detector can be arranged on the separation tank 4 to detect the liquid level signal in the separation tank 4 in real time, so as to monitor the liquid level of the liquid hydrogen in the separation tank 4.

[0065] The power generation system 300 further comprises a heater 7, which is in communication with the gas pipeline 501 and is located upstream of the fuel cell 3. The heater 7 is used to heat the gaseous hydrogen delivered by the gas pipeline 501. Specifically, the heater 7 is located between the third regulating valve 603 and the separation tank 4, so as to heat and gasify the gaseous hydrogen output from the storage tank 1.

[0066] The power generation system 300 comprises a compressor 8, which is in communication with the gas pipeline 501 and is located upstream of the fuel cell 3. The compressor 8 is used to pressurize the gaseous hydrogen delivered by the gas pipeline 501. Specifically, the compressor 8 is located between the separation tank 4 and the fuel cell 3, so as to pressurize the gaseous hydrogen output after being separated by the separation tank 4, so as to reach the required fuel gas pressure of the fuel cell 3, thereby improving the efficiency of the fuel cell 3 in generating electric energy. Moreover, the first regulating valve 601 is located between the separation tank 4 and the compressor 8.

[0067] The power generation system 300 comprises a DC / DC converter 9, an input end of which is electrically connected with the fuel cell 3, and an output end of which is electrically connected with the power utilization module 200. The DC / DC converter 9 is used to convert the voltage of the electric energy generated by the fuel cell 3, so as to adapt to the required voltage of the power utilization module 200, thereby ensuring that the power utilization module 200 can be normally used.

[0068] The power generation system 300 can further comprise an energy storage device 10, an input end of the energy storage device 10 being electrically connected with an output end of the DC / DC converter 9, and an output end of the energy storage device 10 being electrically connected with the power utilization module 200. In the case that the power utilization module 200 does not need to be powered, or in the case that the power generated by the fuel cell 3 is higher than the demand of the power utilization module 200, the power generated by the fuel cell 3 can be stored by the energy storage device 10 to avoid waste of power. At the same time, the power utilization module 200 can be directly powered by the energy storage device 10, and in this case, the fuel cell 3 can be in an inactive state, thereby reducing unnecessary waste of hydrogen and improving the energy efficiency of the power generation system 300 and continuously providing environmentally friendly power. In addition, the above design enables power supply by at least one of the fuel cell 3 and the energy storage device 10, thereby increasing the selection of power supply modes of the power generation system 300, so as to flexibly select a power supply mode according to actual conditions, and thereby enhancing the stability and reliability of the power generation system 300.

[0069] In addition, the energy storage device 10 can also generate power by using renewable energy such as solar energy, bioenergy, and tidal energy.

[0070] The power generation system 300 further comprises a frequency converter 11, an input end of the frequency converter 11 being electrically connected with an output end of the DC / DC converter 9 and / or an input end of the frequency converter 11 being electrically connected with an output end of the energy storage device 10, and the frequency converter 11 is used to convert the frequency of power. In actual operation, at least one of the DC / DC converter 9 and the energy storage device 10 of the frequency converter 11 is kept in an on state.

[0071] The power generation system 300 further comprises a superconducting motor 12, an input end of the superconducting motor 12 being electrically connected with an output end of the DC / DC converter 9 and / or an input end of the superconducting motor 12 being electrically connected with the energy storage device 10. That is, the above design enables power supply to the superconducting motor 12 by at least one of the fuel cell 3 and the energy storage motor, and the specific power supply mode can be selected as needed, thereby enhancing the flexibility, stability, and reliability of the power generation system 300.

[0072] Specifically, the input end of the superconducting motor 12 is electrically connected with the output end of the frequency converter 11, and this design enables the frequency converter 11 to convert power into the operating power frequency required by the superconducting motor 12, thereby ensuring that the superconducting motor 12 can operate normally.

[0073] The output end of the superconducting motor 12 is used to be electrically connected with the power module 100, and the superconducting motor 12 is used to convert power into mechanical energy required by the power module 100, thereby driving the power module 100 to operate.

[0074] The superconducting motor 12 has an inlet and an outlet. The inlet of the superconducting motor 12 is connected with the liquid delivery pipeline 502, and the superconducting motor 12 is used to exchange heat with the liquid hydrogen to keep the superconducting state and produce gaseous hydrogen. The outlet is connected with a communication pipeline 504 for conveying gaseous hydrogen, and the communication pipeline 504 is connected with the fuel cell 3.

[0075] Since the superconducting motor 12 will continuously generate heat during operation, the design of connecting the superconducting motor 12 with the inside of the storage tank 1 through the liquid delivery pipeline 502 can make the liquid hydrogen in the storage tank 1 flow into the superconducting motor 12 through the liquid delivery pipeline 502 to directly contact with the components (such as superconducting coils) in the superconducting motor 12 that need to be cooled, so that the liquid hydrogen exchanges heat with the superconducting motor 12 to provide a super-low temperature environment for the superconducting motor 12, and in this process, the superconducting motor 12 keeps the superconducting state due to absorbing the cold of the liquid hydrogen to ensure the normal operation of the superconducting motor 12. At the same time, in the process of heat exchange, the liquid hydrogen is gasified into gaseous hydrogen due to absorbing heat, so the design of connecting the superconducting motor 12 with the fuel cell 3 through the communication pipeline 504 can convey the gaseous hydrogen gasified due to heat exchange into the fuel cell 3 to provide hydrogen fuel for the fuel cell 3, and in the case that the oxygen supply module 2 supplies oxygen fuel to the fuel cell 3, the fuel cell 3 can generate electric energy to realize power supply to the superconducting motor 12 to enable the superconducting motor 12 to drive the electric module 200 to work. That is, a fuel-electricity supply circulation path is formed among the storage tank 1, the superconducting motor 12 and the fuel cell 3, the liquid hydrogen is reasonably used to exchange heat with the superconducting motor 12 to cool the superconducting motor 12, and the gaseous hydrogen generated by exchanging heat with the superconducting motor 12 is reasonably used to provide fuel for the fuel cell 3 to generate electric energy, unnecessary waste of gaseous hydrogen is reduced, and hydrogen is reused.

[0076] Specifically, the inside of the storage tank 1 is provided with a hydrogen extraction pump 13 connected with the liquid delivery pipeline 502, and the hydrogen extraction pump 13 is used to pump the liquid hydrogen in the storage tank 1 into the liquid delivery pipeline 502 to realize delivery of the liquid hydrogen.

[0077] The communication pipeline 504 is connected with the gas delivery pipeline 501, and the connection points of the two pipelines are located downstream of the third control valve 603 and upstream of the warmer 7.

[0078] An example of the working principle of the above-mentioned power generation system 300 is listed as follows:

[0079] The gaseous hydrogen in the tank 1 is discharged along the gas pipeline 501, heated and gasified by the heater 7, and then separated by the separation tank 4 to separate the re-liquefied hydrogen from the gaseous hydrogen, so that only the gaseous hydrogen is continuously transported downstream to the compressor 8. The gaseous hydrogen is compressed by the compressor 8 to the required fuel gas pressure of the fuel cell 3, and then the compressed gaseous hydrogen is transported into the fuel cell 3. At the same time, the oxygen supply module 2 transports oxygen into the fuel cell 3. The fuel cell 3 obtains hydrogen and oxygen to perform an electrochemical reaction to generate electric energy.

[0080] The electric energy is transmitted to at least one of the frequency converter 11, the energy storage device 10, and the power consumption module 200 through the DC / DC converter 9. The frequency converter 11 converts the electric energy into an operating power frequency required by the superconducting motor 12, and the superconducting motor 12 converts the electric energy into mechanical energy to drive the power module 100.

[0081] At the same time, the hydrogen extraction pump 13 pumps the liquid hydrogen into the superconducting motor 12 to contact and exchange heat with the components to be cooled in the superconducting motor 12. In this process, the superconducting motor 12 remains in a superconducting state due to the absorption of the cold energy of the liquid hydrogen, to ensure the normal operation of the superconducting motor 12. At the same time, in the process of heat exchange, the liquid hydrogen is gasified into gaseous hydrogen due to the absorption of heat, and the part of the gaseous hydrogen is transported into the gas pipeline 501 through the communication pipeline 504, to further increase the amount of gaseous hydrogen, i.e. to increase the amount of fuel of the fuel cell 3, to increase the power generation capacity of the fuel cell 3.

[0082] The application also provides a ship, which comprises a ship body, a power module 100, a power consumption module 200, and a power generation system 300 as described above. The power module 100, the power consumption module 200, and the power generation system 300 are arranged on the ship body, and the power generation system 300 is electrically connected with the power module 100 and the power consumption module 200 to supply electric energy to the power module 100 and the power consumption module 200.

[0083] Specifically, the power module 100 comprises a transmission shaft and a propeller, and the propeller is connected to the output end of the superconducting motor 12 through the transmission shaft. The superconducting motor 12 converts electric energy into mechanical energy to drive the transmission shaft, so as to rotate the propeller to propel the ship.

[0084] The power consumption module 200 is a ship power grid, which can contain any device requiring power on the ship body.

[0085] From the above technical solutions, the application has at least the following advantages and positive effects:

[0086] In the application, the gaseous hydrogen in the storage tank can flow to the fuel cell through the gas pipeline, so as to provide hydrogen fuel for the fuel cell, that is, the power supply system in the application reasonably utilizes the gaseous hydrogen in the storage tank, so that it is directly used as the fuel for generating electric energy of the fuel cell, so as to avoid the waste of the part of energy and improve the utilization rate of energy.

[0087] In addition, the gaseous hydrogen is easy to be liquefied due to absorbing the cold of the pipe wall during the conveying process in the pipeline, therefore, the application sets the separation tank on the gas pipeline, separates the liquefied hydrogen and the gaseous hydrogen by the separation tank, and only the gaseous hydrogen is continuously conveyed to the fuel cell downstream to supply fuel for the fuel cell, at the same time, the separation tank can temporarily store the liquefied hydrogen, so as to realize the recovery of the liquefied hydrogen during the conveying process, so as to facilitate the subsequent reuse of the part of liquid hydrogen, so as to improve the utilization rate of energy.

[0088] Although the application has been described with reference to several exemplary embodiments, it will be understood that the terms used are terms of description and illustration and not of limitation. Since the application can be embodied in various forms without departing from the spirit or essential characteristics thereof, it should be understood that the above-described embodiments are not limited to any of the aforementioned details, but are to be construed broadly within the spirit and scope of the appended claims, therefore, all changes and modifications that fall within the meaning and range of equivalency of the claims are to be embraced by the appended claims.

Claims

1. A power generation system for supplying electricity, characterized in that, The power generation system includes: A storage tank for storing hydrogen fuel; the storage tank is provided with a gas outlet, and the gas outlet is connected to a gas pipeline for transporting gaseous hydrogen. Oxygen supply module, which is used to provide oxygen; A fuel cell is connected to the gas supply pipeline and the oxygen supply module. The fuel cell is used to receive gaseous hydrogen and oxygen and to generate electrical energy. The fuel cell is also used to be electrically connected to the power consumption module. A separator, located on the gas pipeline and connected upstream of the fuel cell, is used to separate liquefied hydrogen and gaseous hydrogen.

2. The power generation system according to claim 1, characterized in that, The separation tank also includes a reflux port, which is connected to the storage tank via a reflux pipeline to allow liquid hydrogen to flow back into the storage tank. The return pipeline is equipped with a control valve for regulating its flow rate.

3. The power generation system according to claim 1, characterized in that, The power generation system includes a heater connected to the gas pipeline and located upstream of the fuel cell. The heater is used to heat the gaseous hydrogen transported by the gas pipeline.

4. The power generation system according to claim 1, characterized in that, The power generation system includes a compressor connected to the gas pipeline and located upstream of the fuel cell. The compressor is used to pressurize the gaseous hydrogen transported by the gas pipeline. The gas pipeline is equipped with a first regulating valve for regulating its flow rate, and the first regulating valve is located between the separator and the compressor.

5. The power generation system according to claim 1, characterized in that, The power generation system includes a DC / DC converter, the input of which is electrically connected to the fuel cell, and the output of which is electrically connected to the power consumption module.

6. The power generation system according to claim 5, characterized in that, The power generation system also includes an energy storage device, the input terminal of which is electrically connected to the output terminal of the DC / DC converter, and the output terminal of which is electrically connected to the power consumption module.

7. The power generation system according to claim 6, characterized in that, The power generation system further includes a superconducting motor, the input terminal of which is electrically connected to the output terminal of the DC / DC converter; and / or, the input terminal of the superconducting motor is electrically connected to the energy storage device. The output terminal of the superconducting motor is used for electrical connection with the power module.

8. The power generation system according to claim 7, characterized in that, The storage tank is also provided with a liquid outlet, which is connected to a liquid delivery pipeline for transporting liquid hydrogen; the liquid delivery pipeline is provided with a second control valve for regulating its flow rate; The superconducting motor has a connected inlet and outlet. The inlet of the superconducting motor is connected to the liquid delivery pipeline. The superconducting motor is used to maintain a superconducting state by exchanging heat with liquid hydrogen and to generate gaseous hydrogen. The outlet of the superconducting motor is connected to a connecting pipeline for transporting gaseous hydrogen. The connecting pipeline is connected to the fuel cell and is used to transport gaseous hydrogen to the gas delivery pipeline.

9. The power generation system according to claim 8, characterized in that, A gas flow meter is installed on the gas transmission pipeline, and the gas flow meter is used to detect the flow signal of gaseous hydrogen inside the gas transmission pipeline; A liquid flow meter is installed on the infusion pipeline, and the liquid flow meter is used to detect the flow signal of liquid hydrogen inside the infusion pipeline; The storage tank is equipped with a hydrogen pump, which is connected to the liquid delivery pipeline. The hydrogen pump is used to pump liquid hydrogen from the storage tank into the liquid delivery pipeline.

10. The power generation system according to claim 7, characterized in that, The power generation system includes a frequency converter, the input terminal of which is electrically connected to the output terminal of the DC / DC converter, and / or, the input terminal of the frequency converter is electrically connected to the output terminal of the energy storage device; The output terminal of the frequency converter is electrically connected to the input terminal of the superconducting motor.

11. A ship, characterized in that, The system includes a hull, a power module, an electrical module, and a power generation system as described in any one of claims 1 to 10. The power module, the electrical module, and the power generation system are all arranged on the hull. The power generation system is electrically connected to the power module and the electrical module to supply power to the power module and the electrical module.

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