Power generation system based on fuel cell and power station thereof

Abstract

The utility model relates to the technical field of fuel cell power generation, in particular to a power generation system based on a fuel cell and a power station thereof. The power generation system comprises a frame, and the frame at least comprises a first structural layer and a second structural layer through separation; the system comprises a fuel cell stack, a hydrogen circulating pump, an intercooling humidifying module, an air compressor, a circulating water pump, a heat exchanger and a connecting pipeline, the fuel cell stack and the hydrogen circulating pump are arranged on the first structural layer; the intercooling humidifying module, the air compressor, the circulating water pump and the heat exchanger are arranged on the second structural layer; the fuel cell stack comprises an integrated fluid interface, and the integrated fluid interface is respectively connected to the hydrogen circulating pump, the intercooling humidifying module, the air compressor, the circulating water pump and the heat exchanger through the connecting pipelines. Through the structural arrangement, the utility model at least has the advantages of reasonable structure, high space utilization, simplicity and convenience in assembly and maintenance and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cell power generation, in particular to a power generation system based on fuel cells and a power station thereof. Background Art

[0002] Proton exchange membrane fuel cell (PEMFC) is a power generation device that converts the chemical energy in fuel (hydrogen) and oxidant (oxygen) into electrical energy through electrochemical reactions. It has the advantages of being clean, pollution-free, and highly recyclable. Existing megawatt-class fixed fuel cell power stations are mostly composed of multiple fuel cell subsystem modules to achieve a breakthrough in power. However, these fuel cell subsystem modules are inconvenient to maintain and repair in the later stage due to problems such as compact structure or unreasonable layout, which increases the cost of later maintenance and reduces customer experience. Utility Model Content

[0003] The utility model aims at the technical problem of inconvenient maintenance and overhaul of fuel cell subsystem modules in the prior art, and provides a power generation system based on fuel cells and a power station thereof. The power generation system of the fuel cell is modified based on the design requirements of the component structure of the fuel cell power generation, and has at least the advantages of reasonable structure, high space utilization, and easy assembly and maintenance.

[0004] First aspect

[0005] The utility model provides a power generation system based on a fuel cell, comprising: a frame, wherein the frame comprises at least a first structural layer and a second structural layer through separation;

[0006] Fuel cell stack, hydrogen circulation pump, intercooler humidification module, air compressor, circulating water pump, heat exchanger and connecting pipes;

[0007] The fuel cell stack and the hydrogen circulation pump are arranged on the first structural layer;

[0008] The intercooling and humidifying module, air compressor, circulating water pump and heat exchanger are arranged in the second structural layer;

[0009] The fuel cell stack comprises an integrated fluid interface, and the integrated fluid interface is respectively connected to the hydrogen circulation pump, the intercooling humidification module, the air compressor, the circulating water pump and the heat exchanger through the connecting pipelines.

[0010] Specifically, one of the main concepts of the present invention is to reconstruct the internal layout structure of the fuel cell-based power generation system through component integration and modular design, so that the internal structure and spatial layout of the power generation system are more reasonable and convenient for assembly and maintenance of various components.

[0011] Furthermore, the first structural layer is arranged on the far-ground side, and the second structural layer is arranged on the near-ground side.

[0012] Specifically, by setting the height of the first structural layer and the second structural layer, the fuel cell stack is placed at a high position, which is convenient for daily inspection of the fuel cell stack in the later stage and improves the safety of the operation of the fuel cell stack.

[0013] Furthermore, the integrated fluid interface is arranged at an end side of the fuel cell stack close to the first side portion of the first structural layer;

[0014] The hydrogen circulation pump is arranged close to the integrated fluid interface and is detachably installed on the first structural layer.

[0015] Specifically, the integrated fluid interface of the fuel cell stack is arranged on the end side of the first side portion of the fuel cell stack close to the first structural layer, so as to facilitate the arrangement of the connecting pipelines on this side, facilitate the assembly and disassembly of the interfaces, and avoid the complexity of the pipelines, which leads to inconvenience in maintenance. At the same time, another concept of the utility model is to arrange the hydrogen circulation pump of the power generation system on the first structural layer, shorten the installation distance between it and the integrated fluid interface, so that the distance between the hydrogen circulation pump and the integrated fluid interface is shorter, and avoid the hydrogen circulation pump being arranged at a low position, which is not only convenient for driving the hydrogen circulation, but also can avoid water accumulation in the hydrogen circulation pump. In addition, the shorter the hydrogen transmission pipeline, the smaller the risk of hydrogen leakage, and the safer the operation of the fuel cell stack.

[0016] Furthermore, the second structural layer includes a bracket with push-pull functions;

[0017] The bracket is provided with a mounting portion in the direction of the first structural layer, and the mounting portion is used for detachable mounting of at least one of the intercooling and humidifying module, the air compressor and the circulating water pump;

[0018] A reserved space is provided in another direction of the bracket, and the reserved space is used for detachable installation of the heat exchanger.

[0019] Specifically, another concept of the utility model is to design the second structural layer in layers, and to push out and push in the components installed on the mounting portion through a bracket with push-pull function, so as to facilitate maintenance. At the same time, according to the particularity of the heat exchanger, it can be set in the reserved space under the bracket, so that it can be set at a low position.

[0020] Furthermore, the intercooling and humidifying module is independent and includes an intercooler and a humidifier.

[0021] Optionally, the intercooling and humidifying module is integrated, integrating both the intercooling function and the humidifying function.

[0022] In some embodiments, the bracket includes a rolling structure, and the rolling structure is arranged on the end side of the second side portion of the bracket close to the second structural layer, and the second side portion and the first side portion are located on the same side of the frame.

[0023] Specifically, another concept of the utility model is to use a rolling structure to realize the pulling and pulling of the bracket, thereby improving the operability of the bracket pulling and pulling. Moreover, the bracket is pulled and pulled from the side of the second structural layer opposite to the second side portion, which can avoid interference with the connecting pipeline.

[0024] Furthermore, the rolling structure is arranged close to the bottom frame of the second structural layer, and the roller of the rolling structure is in contact with or suspended on the bottom frame.

[0025] Specifically, the rolling structure does not participate in the force when the bracket is placed, and is mainly used to become a lever when the bracket is pushed or pulled, thereby making the pushing and pulling of the bracket more labor-saving.

[0026] In some embodiments, the circulating water pump is detachably mounted on the second side of the second structural layer.

[0027] Second aspect

[0028] The utility model also provides a power station, comprising a power generation system based on a fuel cell provided by any one of the embodiments of the first aspect.

[0029] Specifically, the utility model increases the power generation capacity of the power station by stacking the number of power generation systems based on fuel cells provided by any embodiment of the first aspect. At the same time, each sub-power generation system of the power station can be independently repaired, and the repair process is convenient.

[0030] In summary, the utility model provides a power generation system based on fuel cells and a power station thereof, which have at least the following advantages:

[0031] 1. Through the integrated and modular design of components, the internal layout of the fuel cell-based power generation system is reconstructed, making the internal structure and spatial layout of the power generation system more reasonable and facilitating the assembly and maintenance of various components;

[0032] 2. By setting the height of the first structural layer and the second structural layer, the fuel cell stack is placed at a high position, which is convenient for daily inspection of the fuel cell stack in the later stage and improves the safety of the operation of the fuel cell stack;

[0033] 3. The integrated fluid interface of the fuel cell stack is arranged on the end side of the first side portion close to the first structural layer, so as to facilitate the arrangement of the connecting pipelines on this side, facilitate the assembly and disassembly of the interfaces, and avoid the complexity of the pipelines, which leads to inconvenient maintenance. At the same time, another concept of the utility model is to arrange the hydrogen circulation pump of the power generation system on the first structural layer, shorten the installation distance between it and the integrated fluid interface, so that the distance between the hydrogen circulation pump and the integrated fluid interface is shorter, and avoid the hydrogen circulation pump being arranged at a low position, which is not only convenient for driving the hydrogen circulation, but also can avoid water accumulation in the hydrogen circulation pump;

[0034] 4. The utility model also carries out a layered design for the second structural layer, and realizes the pushing and pushing of the components installed on the mounting part through a bracket with a push-pull function, so as to facilitate its maintenance. At the same time, according to the particularity of the heat exchanger, it can be set in the reserved space of the lower layer of the bracket, so that it can be set at a low position;

[0035] 5. The rolling structure of the utility model does not participate in the force when the bracket is placed. It is mainly used to become a lever when the bracket is pushed and pulled, thereby making the pushing and pulling of the bracket more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described object and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0037] Figure 1 A schematic diagram of a power generation system based on a fuel cell provided in an embodiment of the utility model;

[0038] Figure 2 An operation diagram of an embodiment of the support push and pull provided by the utility model;

[0039] Figure 3 A schematic diagram of the flow direction of the connecting pipelines of the fuel cell-based power generation system provided in an embodiment of the utility model;

[0040] Figure 4 A schematic diagram of the structure of a power station provided by an embodiment of the utility model;

[0041] 1. Frame; 2. Fuel cell stack; 3. Hydrogen circulation pump; 4. Intercooler humidification module; 5. Air compressor; 6. Circulating water pump; 7. Heat exchanger; 8. Connecting pipeline; 11. First structural layer; 12. Second structural layer; 21. Integrated fluid interface; 81. Hydrogen circulation pipeline; 82. Air supply pipeline; 83. Air transmission pipeline; 84. Water circulation pipeline; 111. First side; 121. Bracket; 122. Bottom frame; 123. Second side; 1211. Installation part; 1212. Reserved space; 1213. Handle; 1214. Rolling structure; 12141. Roller; 12142. Fixed seat. DETAILED DESCRIPTION

[0042] The following is combined with Figures 1 to 4 , the utility model is described in detail.

[0043] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0044] It is worth noting that the embodiments of the present invention use ordinal numbers such as "first" and "second" to distinguish multiple objects, and are not used to limit the order, timing, priority or importance of multiple objects. For example, "first side" and "second side" are only for the convenience of description, and do not indicate the difference in order, importance, etc. between the "first side" and the "second side".

[0045] In addition, the term "detachable connection" should be understood in a broad sense, such as bolt connection, snap connection, riveting connection and other detachable connection methods that can achieve "detachable connection". For example, "the hydrogen circulation pump is arranged near the integrated fluid interface and detachably installed on the first side of the first structural layer" should be understood in a broad sense, including but not limited to bolt connection, snap connection and other detachable connection methods.

[0046] The utility model is mainly devoted to improving the structure of the power generation system based on fuel cells. Through the integrated and modular design of parts and components, the structural layout of the power generation system based on fuel cells is more reasonable, and the early assembly and later maintenance and repair are more convenient. At the same time, the power generation system based on fuel cells provided by the utility model is designed with upper and lower layers, and the push-pull bracket 121 design of the lower layer, so that the repair and daily maintenance of the various parts of the power generation system are more convenient.

[0047] See also Figure 1 Shown is a schematic structural diagram of a fuel cell-based power generation system provided in an embodiment of the utility model.

[0048] Specifically, the utility model uses a frame 1 as a mounting frame for a power generation system, and spatially deconstructs the frame 1 into two layers, namely a first structural layer 11 and a second structural layer 12. The first structural layer 11 is arranged on the far side, at the top, and the second structural layer 12 is arranged on the near side, at the bottom.

[0049] Wherein, the first structural layer 11 is provided with a fuel cell stack 2 and a hydrogen circulation pump 3 .

[0050] The integrated fluid interface 21 of the fuel cell stack 2 is disposed at one end of the body of the fuel cell stack 2 , and the hydrogen circulation pump 3 is arranged according to the integrated fluid interface 21 .

[0051] Optionally, the interface of the hydrogen circulation pump 3 is close to the hydrogen inlet and outlet interfaces of the integrated fluid interface 21, so that the connecting pipe between the hydrogen circulation pump 3 and the integrated fluid interface 21 is shorter, thereby facilitating the recycling of hydrogen driven by the hydrogen circulation pump 3.

[0052] It is worth to understand that the fuel cell stack 2 of the present invention is implemented as a common hydrogen fuel cell, such as a proton exchange membrane fuel cell (PEMFC), which is a power generation device that directly converts the chemical energy of hydrogen and oxygen into electrical energy.

[0053] At the same time, the hydrogen circulation pump 3 is arranged in the first structural layer 11 on the far side. On the one hand, it is beneficial for it to be closer to the integrated fluid interface 21, with a smaller risk of hydrogen leakage, and it is convenient to drive the hydrogen circulation, and the power demand for the hydrogen circulation pump is lower; on the other hand, it can avoid water accumulation in the hydrogen circulation pump 3 and ensure its safe operation.

[0054] Furthermore, the hydrogen circulation pump 3 is installed on the first structural layer 11 in a detachable installation manner, such as being fixed on the first side portion 111 , or fixed on the spacing portion between the first structural layer 11 and the second structural layer 12 .

[0055] Optionally, the first structural layer 11 is provided with a drawer structure for placing the fuel cell stack 2. After disconnecting the pipeline connection of the integrated fluid interface 21, the fuel cell stack 2 can be moved outside the first structural layer 11 by pulling out the drawer structure, thereby facilitating fault detection and maintenance of the fuel cell stack 2.

[0056] Furthermore, the second structural layer 12 is modularly designed based on the functions of each component, using a bracket 121 with built-in push-pull functions. The upper layer of the bracket 121 is provided with a mounting portion 1211, and the intercooling and humidifying module 4, the air compressor 5 and the circulating water pump 6 of the power generation system are detachably mounted on the mounting portion 1211.

[0057] Optionally, the circulating water pump 6 can also be detachably mounted on the second side portion 123 . The second side portion 123 and the first side portion 111 are disposed on the same inner side of the frame 1 , so that the circulating water pump 6 is close to the integrated fluid interface 21 of the first structural layer 11 .

[0058] Optionally, the air compressor 5 is arranged away from the second side portion 123. Since the air compressor 5 is used to provide pressurized air upstream of the intercooling and humidifying module 4 and is not directly connected to the integrated fluid interface 21, it is arranged away from the integrated fluid interface 21, so that the arrangement structure of the connecting pipeline 8 is simpler and more reasonable.

[0059] Furthermore, a reserved space 1212 is provided in the lower layer of the bracket 121, and the reserved space 1212 is used for installing the heat exchanger 7 of the power generation system. The heat exchanger 7 is used to cool the cooling water of the fuel cell stack 2, and is therefore arranged in the lower space of the second structural layer 12, so that the heat exchanger 7 is arranged at a low position.

[0060] Optionally, the heat exchanger 7 is detachably mounted on the bottom frame 122 or the second side portion 123 .

[0061] Optionally, the bracket 121 is pushed and pulled in a sliding rail manner.

[0062] Optionally, the push-pull mode of the bracket 121 is rolling.

[0063] Furthermore, the intercooling and humidifying module 4 is independent, including an intercooler and a humidifier.

[0064] Optionally, the intercooling and humidifying module 4 is integrated, integrating both the intercooling function and the humidifying function.

[0065] In order to explain the preferred rolling method of the present invention, please refer to Figure 2 It is a schematic diagram showing the operation of pushing and pulling the bracket 121 according to an embodiment of the present invention.

[0066] Specifically, a rolling structure 1214 is provided at one end of the bracket 121, including a fixed seat 12142 and a roller 12141. The roller 12141 is mounted on the fixed seat 12142 through a bearing and has rolling freedom. The fixed seat 12142 is fixedly connected to the bracket 121. The rolling structure 1214 is arranged close to the bottom frame 122, and the roller 12141 is in contact with or suspended on the bottom frame 122.

[0067] The rolling push-pull principle of the bracket 121 is shown as the angle between the dotted line and the real object. When it is necessary to push, the bracket 121 is tilted at a certain angle A to be placed in the dotted line state, and then the roller 12141 is used as the lever structure of the bracket 121, and the roller 12141 is used to push it inward, and then it is laid flat downward to the solid line state; when it is necessary to pull it out, it is lifted from the solid line state to the dotted line state, and the roller 12141 is used to roll and pull it outward, so that the parts installed on the mounting portion 1211 of the bracket 121 can be inspected, disassembled and installed.

[0068] In addition, the bracket 121 is also provided with a handle 1213 for pushing in and pulling out the bracket 121 .

[0069] It is worth to be understood that the “end side” should be understood as the end side in the horizontal direction shown in the figure.

[0070] Further, in order to analyze the connecting pipeline 8 of the utility model, please refer to Figure 3 The figure shows a flow diagram of a connecting pipeline 8 of a power generation system based on a fuel cell provided in an embodiment of the present utility model.

[0071] Based on the working principle of hydrogen fuel cells, it is necessary to supply hydrogen and oxygen required for electrochemical reactions, and discharge the heat generated by electrochemical reactions. Therefore, the hydrogen circulation pump 3 is connected to the hydrogen inlet and outlet interfaces of the integrated fluid interface 21 through the hydrogen circulation pipeline 81 to realize the recycling of hydrogen. The air compressor 5 pressurizes the external air, connects to the intercooling and humidifying module 4 through the air transmission pipeline 83, and transmits the air to the intercooling and humidifying module 4, so that the pressurized and heated air can be cooled and humidified in the intercooling and humidifying module 4; the intercooling and humidifying module 4 supplies the fuel cell stack 2 with air for reaction after cooling and humidification through the air supply pipeline 82. The heat exchanger 7 is used to cool the cooling water in the water circulation pipeline 84, and then cool the fuel cell stack 2.

[0072] It is worth noting that the arrows indicate the flow direction of the fluid.

[0073] For further information, see Figure 4 Shown is a structural schematic diagram of a power station provided by an embodiment of the utility model.

[0074] Specifically, the utility model also provides a power station, including a plurality of power generation systems based on fuel cells provided by any of the aforementioned embodiments, for increasing power generation capacity.

[0075] The utility model is described in detail above. The utility model uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A power generation system based on a fuel cell, characterized in that: include: A frame (1), wherein the frame (1) comprises at least a first structural layer (11) and a second structural layer (12) through separation; A fuel cell stack (2), a hydrogen circulation pump (3), an intercooling and humidifying module (4), an air compressor (5), a circulating water pump (6), a heat exchanger (7), and connecting pipes (8); The fuel cell stack (2) and the hydrogen circulation pump (3) are arranged on the first structural layer (11); The intercooling and humidifying module (4), the air compressor (5), the circulating water pump (6) and the heat exchanger (7) are arranged in the second structural layer (12); The fuel cell stack (2) comprises an integrated fluid interface (21), and the integrated fluid interface (21) is respectively connected to the hydrogen circulation pump (3), the intercooling humidification module (4), the air compressor (5), the circulating water pump (6) and the heat exchanger (7) through the connecting pipeline (8).

2. A fuel cell-based power generation system as claimed in claim 1, characterized in that: The first structural layer (11) is arranged on the far side, and the second structural layer (12) is arranged on the near side.

3. A fuel cell-based power generation system as claimed in claim 2, characterized in that: The integrated fluid interface (21) is arranged on the end side of the fuel cell stack (2) close to the first side portion (111) of the first structural layer (11); The hydrogen circulation pump (3) is arranged close to the integrated fluid interface (21) and is detachably mounted on the first structural layer (11).

4. A fuel cell-based power generation system as claimed in claim 3, characterized in that: The second structural layer (12) comprises a bracket (121) with push-pull functions; The bracket (121) is provided with a mounting portion (1211) in a direction facing the first structural layer (11), and the mounting portion (1211) is used for detachable mounting of at least one of the intercooling and humidifying module (4), the air compressor (5) and the circulating water pump (6); A reserved space (1212) is provided in another direction of the bracket (121), and the reserved space (1212) is used for detachable installation of the heat exchanger (7).

5. A fuel cell-based power generation system as claimed in claim 4, characterized in that: The intercooling and humidifying module (4) is independent and comprises an intercooler and a humidifier.

6. A fuel cell-based power generation system as claimed in claim 4, characterized in that: The intercooling and humidifying module (4) is of an integrated type, integrating both the intercooling function and the humidifying function.

7. A fuel cell-based power generation system as claimed in claim 4, characterized in that: The support (121) comprises a rolling structure (1214), and the rolling structure (1214) is arranged on the end side of the second side portion (123) of the support (121) close to the second structural layer (12), and the second side portion (123) and the first side portion (111) are located on the same side of the frame (1).

8. A fuel cell-based power generation system as claimed in claim 7, characterized in that: The rolling structure (1214) is arranged close to the bottom frame (122) of the second structural layer (12), and the roller (12141) of the rolling structure (1214) is in contact with or suspended on the bottom frame (122).

9. A fuel cell-based power generation system as claimed in claim 4, characterized in that: The circulating water pump (6) is detachably mounted on the second side portion (123) of the second structural layer (12).

10. A power station, characterized in that: The invention comprises a plurality of power generation systems based on fuel cells as described in any one of claims 1 to 9.

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