Power generation system

Abstract

The utility model discloses a power generation system. The power generation system comprises a power generation structure and a gas supply structure. Wherein the power generation structure comprises a first box body and an electric pile, the first box body is provided with a first accommodating cavity, the electric pile is accommodated in the first accommodating cavity, and the electric pile is provided with an air inlet pipeline and an exhaust pipeline; the gas supply structure comprises a second box body and a first pipeline, the second box body is provided with a second containing cavity, the second box body is connected to the outer surface of the first box body, the second containing cavity can communicate with the external space, and the first pipeline communicates with the gas inlet pipeline, is used for conveying hydrogen and comprises a first valve; the first valve is contained in the second containing cavity. The first valve is contained in the second containing cavity formed in the second box body, possible leakage points of the gas supply system are arranged outside the first containing cavity, the situation that gas is directly leaked into the first containing cavity, and consequently explosion is caused is avoided, and the overall safety of the power generation system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power generation, in particular to a power generation system. Background Art

[0002] In the related technologies, hydrogen energy is used more and more widely as a clean energy, and the method of using hydrogen energy to generate electricity has also become one of the directions of hydrogen energy utilization. Existing power generation systems, such as power generation containers, generally set the hydrogen switch structure in the box. When operating the switch, it is necessary to enter the box to operate, which makes the operation inconvenient. If there is a leak at the switch, due to the flammable and explosive properties of hydrogen, it will cause more serious safety problems. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a power generation system that can improve the safety and operation convenience of the power generation process.

[0004] According to the first aspect of the present invention, the power generation system comprises:

[0005] A power generation structure, comprising a first box body and a battery stack, wherein the first box body is provided with a first accommodating cavity, the battery stack is accommodated in the first accommodating cavity, and the battery stack is provided with an intake pipeline and an exhaust pipeline;

[0006] The gas supply structure includes a second box and a first pipeline, the second box is provided with a second accommodating chamber, the second box is connected to the outer surface of the first box, the second accommodating chamber can be communicated with the external space, the first pipeline is connected to the intake pipeline, the first pipeline is used to transport hydrogen, the first pipeline includes a first valve, and the first valve is accommodated in the second accommodating chamber.

[0007] The power generation system according to the embodiment of the utility model has at least the following beneficial effects: the battery stack is accommodated in the first accommodating chamber, the gas supply structure is provided with a second box body and a first pipeline, the first pipeline is connected to the air intake pipeline arranged in the battery stack, the first pipeline is provided with a first valve, and the first valve is accommodated in the second accommodating chamber arranged in the second box body, and the possible leakage point of the gas supply system is arranged outside the first accommodating chamber to avoid direct leakage of gas into the first accommodating chamber and thus cause an explosion. At the same time, the operator can operate the valve from the outside of the first box body without entering the first accommodating chamber, thereby improving the overall safety and operational convenience of the power generation system.

[0008] According to some embodiments of the utility model, the air supply structure also includes a safety pipeline, which is connected to the first pipeline. The safety pipeline is also provided with an explosion-proof valve and a flame retardant. The explosion-proof valve and the flame retardant are arranged in sequence along the conveying direction of the airflow. The flame retardant is provided with an air outlet, and the air outlet is connected to the external space.

[0009] According to some embodiments of the present invention, the exhaust pipeline is connected between the explosion-proof valve and the flame retardant.

[0010] According to some embodiments of the present utility model, the flame retardant has an air inlet end and an air outlet end, the air inlet end is used to allow gas to enter, the air outlet is arranged at the air outlet end, and the air outlet end is bent downward.

[0011] According to some embodiments of the present invention, the distance between the flame retardant and the first box is greater than or equal to 1.5 m.

[0012] According to some embodiments of the present utility model, the gas supply system further includes a second pipeline, the second pipeline is connected in parallel with the first pipeline, the second pipeline is connected to the air intake pipeline, and the second pipeline is used to transport nitrogen.

[0013] According to some embodiments of the present invention, the second pipeline includes a second valve, and the second valve is accommodated in the second accommodating chamber.

[0014] According to some embodiments of the utility model, the air supply structure also includes a safety pipeline and an air outlet pipeline, the safety pipeline is connected to the first pipeline, and the safety pipeline is also provided with an explosion-proof valve and a flame retardant. The explosion-proof valve and the flame retardant are arranged in sequence along the conveying direction of the airflow, and the flame retardant is provided with an air outlet, which is connected to the external space. One end of the air outlet pipeline is connected to the second pipeline, and the other end of the air outlet pipeline is connected between the flame retardant and the explosion-proof valve.

[0015] According to some embodiments of the present invention, the air outlet pipeline includes a third valve, and the third valve is accommodated in the second accommodating chamber.

[0016] According to some embodiments of the present invention, ends of the first pipeline and the second pipeline facing away from the air intake pipeline are both connected to connectors, and the connectors are used to connect to an airflow source.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 A schematic diagram of a power generation system according to an embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the air supply structure of an embodiment of the utility model.

[0021] Reference numerals:

[0022] Power generation structure 100, first box body 110, first accommodating cavity 111;

[0023] A battery stack 120, an air intake pipeline 121, and an exhaust pipeline 122;

[0024] Air supply structure 200, second box body 210, second accommodating chamber 211; first pipeline 220, first valve 221;

[0025] A second pipeline 230 and a second valve 231;

[0026] Safety pipeline 240, explosion-proof valve 241, flame retardant 242, air inlet end 2421, air outlet end 2422, air outlet 2423;

[0027] An air outlet pipeline 250 and a third valve 251;

[0028] Connector 260. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] Reference Figure 1 and Figure 2 The first embodiment of the present application provides a power generation system, including a power generation structure 100 and a gas supply structure 200. The power generation structure 100 includes a first box 110 and a battery stack 120. The first box 110 is provided with a first accommodating chamber 111. The battery stack 120 is accommodated in the first accommodating chamber 111. The battery stack 120 is provided with an intake pipeline 121 and an exhaust pipeline 122. The gas supply structure 200 includes a second box 210 and a first pipeline 220. The second box 210 is provided with a second accommodating chamber 211. The second box 210 is connected to the outer surface of the first box 110. The second accommodating chamber 211 can be connected to the external space. One end of the first pipeline 220 is connected to an external hydrogen source, and the other end of the first pipeline 220 is connected to the intake pipeline 121. The first pipeline 220 is used to transport hydrogen. The first pipeline 220 includes a first valve 221, and the first valve 221 is accommodated in the second accommodating chamber 211.

[0035] The above-mentioned power generation system sets the possible leakage point of the gas supply structure 200, namely the first valve 221, outside the first accommodating chamber 111, so as to facilitate the operator to supply or cut off the gas to the fuel cell stack 120 by external operation, and at the same time, it can avoid the gas directly leaking into the first accommodating chamber 111 and causing an explosion, thereby improving the overall safety of the power generation system.

[0036] Specifically, the second box body 210 is configured to be openable and closable, and when in an open state, the second accommodating chamber 211 is connected to the external space for the operator to operate the valve, and when in a closed state, the second accommodating chamber 211 can be sealed to prevent the valve from being accidentally touched by a person or an object, resulting in changes in the air flow inside the pipeline. The first box body 110 and the wall surfaces of the first box body 110 facing each other are provided with through holes, and the first pipeline 220 can be passed through the through holes to be connected to the air intake pipeline 121.

[0037] Reference Figure 2 In some embodiments, the gas supply structure 200 further includes a safety pipeline 240, which is connected to the first pipeline 220. The safety pipeline 240 is also provided with an explosion-proof valve 241 and a flame retardant 242. The explosion-proof valve 241 and the flame retardant 242 are sequentially arranged along the conveying direction of the airflow. The flame retardant 242 is provided with an outlet 2423, and the outlet 2423 is connected to the external space. When the pressure of the hydrogen gas entering the first pipeline 220 is higher than the design pressure, the gas pressure will push the explosion-proof valve 241 to open and make the first pipeline 220 and the safety pipeline 240 connected. The hydrogen passes through the explosion-proof valve 241 and the flame retardant 242 in sequence, and then is discharged from the gas supply structure 200 through the outlet 2423 of the flame retardant gas, so as to avoid excessive pressure in the pipeline causing damage to the stack 120 or explosion, and further improve the safety of the power generation system.

[0038] Among them, the explosion-proof valve 241 can be selected as a valve that can be used multiple times. After the pressure in the pipeline returns to normal, the connection between the first pipeline 220 and the safety pipeline 240 is cut off again to allow hydrogen to be input into the fuel cell stack 120. Alternatively, the explosion-proof valve 241 can be selected as a structure that can only be used once. When the pressure is too high, the first pipeline 220 and the safety pipeline 240 are connected by destroying its own structure. The damaged explosion-proof valve 241 needs to be replaced later to ensure the normal use of the power generation system.

[0039] Reference Figure 1 and Figure 2 In some embodiments, the exhaust line 122 is connected between the explosion-proof valve 241 and the flame retardant 242. When the gas pressure inside the battery stack 120 is too high, the pressure relief valve inside the battery stack 120 will open, allowing the gas to be discharged directly to the external space through the exhaust line 122 without passing through the explosion-proof valve 241, thereby ensuring that the battery stack 120 will not be damaged due to excessive internal gas pressure during use, increasing the service life of the battery stack 120, and the overall safety and life of the power generation system can also be guaranteed. Similarly, the exhaust line 122 is also connected to the safety line 240 through the through holes on the first box body 110 and the second box body 210.

[0040] Reference Figure 2In some embodiments, the flame retardant 242 has an air inlet end 2421 and an air outlet end 2422. The air inlet end 2421 is used to introduce gas, and the air outlet 2423 is arranged at the air outlet end 2422. The air outlet end 2422 is bent downward to prevent rain or wind and sand from entering the pipeline during use, thereby ensuring that the interior of the air supply structure 200 is not polluted.

[0041] In some embodiments, the distance between the flame retardant 242 and the first box body 110 is greater than or equal to 1.5 m, which can effectively prevent the combustion of hydrogen caused by the discharge of the flame retardant 242. That is, even if the hydrogen burns after being discharged into the external space, due to the setting of the flame retardant 242 and the large distance from the first box body 110, the combustion of hydrogen will not affect the safety of the exhaust pipe 122 and the fuel cell stack 120.

[0042] Reference Figure 1 and Figure 2 In some embodiments, the gas supply structure 200 further includes a second pipeline 230, which is connected in parallel with the first pipeline 220, and the second pipeline 230 is connected to the intake pipeline 121, and the second pipeline 230 is used to transport nitrogen. The second pipeline 230 is used to fill nitrogen into the system to achieve the purpose of cleaning or protecting the stack 120. Since the physical and chemical properties of nitrogen are relatively stable, when the power generation system is not used for a long time, nitrogen needs to be filled into the pipeline and the stack 120 to act as a protective gas to avoid oxidation or corrosion of the stack 120 and the internal components of the pipeline. In addition, when the power generation system is in use, that is, before hydrogen is introduced into the pipeline, nitrogen can be introduced first for purging to expel air and impurities in the pipeline, thereby ensuring the purity of the system when hydrogen is introduced.

[0043] Reference Figure 2 Furthermore, the second pipeline 230 includes a second valve 231, which is accommodated in the second accommodation chamber 211. The second valve 231 is also arranged in the second accommodation chamber 211 to facilitate the operation of the operator. Specifically, both the first valve 221 and the second valve 231 can be mechanical ball valves, which can control the connection or disconnection of the corresponding pipelines by the rotation of the operator. While being easy to operate, it also has a long service life and stability in use, and can meet the requirements of use in harsh environments.

[0044] Reference Figure 2 In some embodiments, the gas supply structure 200 further includes an outlet pipeline 250, one end of which is connected to the second pipeline 230, and the other end of which is connected between the flame retardant 242 and the explosion-proof valve 241. The outlet pipeline 250 is used to connect the second pipeline 230 and the exhaust pipeline 122 during the process of introducing nitrogen into the pipeline for purging, so that the nitrogen can purge the exhaust pipeline 122 and discharge the air and other impurities in the second pipeline 230.

[0045] Reference Figure 2 In some embodiments, the gas outlet pipeline 250 includes a third valve 251, which is accommodated in the second accommodation chamber 211. When the power generation system is used, the second valve 231 and the third valve 251 are first opened to allow nitrogen to purge the pipeline, purge the air in the hydrogen supply system pipeline and discharge it from the gas outlet 2423. After the purge is completed, the second valve 231 and the third valve 251 are closed, and then the first valve 221 is opened to introduce hydrogen into the system, thereby ensuring the purity of the system when hydrogen is introduced. Specifically, the third valve 251 can be selected as a butterfly valve.

[0046] Reference Figure 2 In some embodiments, the first pipeline 220 and the second pipeline 230 are connected to a connector 260 at one end away from the air intake pipeline 121, and the connector 260 is used to connect to the air flow source. The connector 260 can be selected as a flange, so that the first pipeline 220 and the second pipeline 230 can be stably connected to the hydrogen source and the nitrogen source respectively, reducing the probability of leakage.

[0047] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A power generation system, characterized in that: include: A power generation structure, comprising a first box body and a battery stack, wherein the first box body is provided with a first accommodating cavity, the battery stack is accommodated in the first accommodating cavity, and the battery stack is provided with an intake pipeline and an exhaust pipeline; The gas supply structure includes a second box and a first pipeline, the second box is provided with a second accommodating chamber, the second box is connected to the outer surface of the first box, the second accommodating chamber can be communicated with the external space, the first pipeline is connected to the intake pipeline, the first pipeline is used to transport hydrogen, the first pipeline includes a first valve, and the first valve is accommodated in the second accommodating chamber.

2. The power generation system according to claim 1, characterized in that: The air supply structure also includes a safety pipeline, which is connected to the first pipeline. The safety pipeline is also provided with an explosion-proof valve and a flame retardant. The explosion-proof valve and the flame retardant are arranged in sequence along the conveying direction of the airflow. The flame retardant is provided with an air outlet, which is connected to the external space.

3. The power generation system according to claim 2, characterized in that: The air supply structure further comprises an exhaust pipeline, and the exhaust pipeline is connected between the explosion-proof valve and the flame retardant.

4. The power generation system according to claim 2 or 3, characterized in that: The flame retardant has an air inlet end and an air outlet end, the air inlet end is used for introducing gas, the air outlet is arranged at the air outlet end, and the air outlet end is bent downward.

5. The power generation system according to claim 4, characterized in that: The distance between the flame retardant and the first box is greater than or equal to 1.5 m.

6. The power generation system according to claim 1, characterized in that: The power generation system further includes a second pipeline, the second pipeline is connected in parallel with the first pipeline, the second pipeline is communicated with the air intake pipeline, and the second pipeline is used to transport nitrogen.

7. The power generation system according to claim 6, characterized in that: The second pipeline includes a second valve, and the second valve is accommodated in the second accommodating chamber.

8. The power generation system according to claim 6 or 7, characterized in that: The air supply structure also includes a safety pipeline and an air outlet pipeline. The safety pipeline is connected to the first pipeline. The safety pipeline is also provided with an explosion-proof valve and a flame retardant. The explosion-proof valve and the flame retardant are arranged in sequence along the conveying direction of the airflow. The flame retardant is provided with an air outlet, which is connected to the external space. One end of the air outlet pipeline is connected to the second pipeline, and the other end of the air outlet pipeline is connected between the flame retardant and the explosion-proof valve.

9. The power generation system according to claim 8, characterized in that: The air outlet pipeline includes a third valve, and the third valve is accommodated in the second accommodating chamber.

10. The power generation system according to claim 6, characterized in that: The ends of the first pipeline and the second pipeline facing away from the air inlet pipeline are both connected with connectors, and the connectors are used to connect to an airflow source.

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