Pressure relief device and hydrogen production apparatus

Abstract

The application discloses a pressure relief device and a hydrogen production equipment. At least two passages are arranged on a gas storage tank, the first end of each passage is communicated with a gas storage cavity, and the second end opposite to the first end of each passage is communicated with the outside of the gas storage tank. A pressure relief assembly is arranged in at least one passage, the pressure relief assembly has a first state of closing the passage, and the pressure relief assembly also has a second state of connecting the passage with the gas storage cavity and the outside of the gas storage tank. When the gas pressure in the gas storage cavity is not greater than a predetermined gas pressure, the pressure relief assembly is in the first state. When the gas pressure in the gas storage cavity is greater than the predetermined gas pressure to have a pressure difference with the outside of the gas storage tank, the pressure relief assembly is deformed from the first state to the second state under the action of the pressure difference. A feedback assembly comprises a controller and a feedback component, the feedback component is electrically connected with the controller, and the feedback component is at least used for feeding back the state of the pressure relief assembly. The application solves the problem that the discharge pipeline of oxygen after the rupture of the burst valve still has the risk of secondary overpressure.

Description

Technical Field

[0001] This application relates to the field of hydrogen production technology, and more specifically, to a pressure relief device and hydrogen production equipment. Background Technology

[0002] With the rapid development of hydrogen electrolysis technology towards higher power and higher density, the safety of water electrolysis systems has become one of the core bottlenecks restricting their large-scale application. In hydrogen production equipment, the byproduct oxygen needs to be discharged outside the equipment through pipelines, and the reliability of the oxygen discharge system directly affects the safety of the hydrogen production equipment. However, oxygen discharge pipelines are prone to sudden pressure increases, which can lead to pipeline rupture or even explosion. Current technology uses rupture valves to relieve pressure on the oxygen discharge pipelines; however, if the rupture valve fails, the oxygen discharge pipeline will completely lose its pressure relief capacity, still posing a risk of secondary overpressure. Utility Model Content

[0003] The main objective of this application is to provide a pressure relief device and a hydrogen production equipment to solve the problem mentioned in the background art that there is still a risk of secondary overpressure in the oxygen discharge pipeline after the explosion valve ruptures.

[0004] According to one aspect of this application, a pressure relief device is provided, comprising:

[0005] A gas storage tank, wherein a gas storage cavity is provided inside the gas storage tank, and at least two channels are provided on the gas storage tank, wherein the first end of each channel is connected to the gas storage cavity, and the second end of each channel opposite to the first end is connected to the outside of the gas storage tank;

[0006] A pressure relief assembly is disposed in at least one of the channels. The pressure relief assembly has a first state of closing the channel and a second state of connecting the channel to the outside of the gas storage chamber and the gas storage tank. When the gas pressure in the gas storage chamber is not greater than a predetermined gas pressure, the pressure relief assembly is in the first state. When the gas pressure in the gas storage chamber is greater than the predetermined gas pressure and there is a pressure difference with the outside of the gas storage tank, the pressure relief assembly deforms from the first state to the second state under the action of the pressure difference.

[0007] A feedback component, comprising a controller and a feedback element, wherein the feedback element is electrically connected to the controller and is used at least to provide feedback on the status of the pressure relief component.

[0008] Furthermore, the gas storage tank includes a top cover and a tank body, the top cover being disposed on the top of the tank body and forming the gas storage cavity with the tank body, the channel including:

[0009] A first flow channel is disposed on the top cover and communicates with the gas storage chamber, and the end of the first flow channel away from the gas storage tank is communicated with the outside of the gas storage tank.

[0010] The second flow channel is disposed on the side wall of the tank and close to the top cover, and the second flow channel is connected to the gas storage chamber. The end of the second flow channel away from the gas storage tank is connected to the outside of the gas storage tank. The pressure relief component and the feedback component are disposed in the second flow channel.

[0011] Furthermore, the second flow channel includes a first pipe section and a second pipe section, and the pressure relief assembly includes:

[0012] The mounting component has a through mounting channel. The first pipe segment and the second pipe segment are respectively connected to opposite sides of the mounting component and communicate with the mounting channel. The end of the first pipe segment away from the mounting component is connected to the gas storage tank, and the end of the second pipe segment away from the mounting component is connected to the outside of the gas storage tank.

[0013] A rupture element, which is at least partially disposed within the installation channel and seals the installation channel to isolate the first pipe segment from the second pipe segment, and the rupture element ruptures under the action of the pressure difference to deform from the first state to the second state.

[0014] Furthermore, the rupture component includes a rupture disc and a retaining ring, wherein a third through hole is provided on the retaining ring, the rupture disc is embedded in the third through hole and seals the third through hole, and the mounting component includes:

[0015] A first flange is connected to the first pipe section, and a first through hole is provided on the first flange, which is connected to the first pipe section.

[0016] The second flange is connected to the first pipe section, and a second through hole is provided on the second flange, which is connected to the second pipe section.

[0017] The fixing ring is connected between the first flange and the second flange. The first through hole, the third through hole and the second through hole are correspondingly arranged and interconnected to form the installation channel. In the first state, the rupture disc is embedded in the third through hole and closes the third through hole.

[0018] Furthermore, the feedback component includes:

[0019] An alarm is installed on the mounting component and connected to the blasting component. When the blasting component breaks, the alarm sends an alarm signal to the controller.

[0020] Furthermore, the feedback component also includes:

[0021] A pressure sensor is disposed in the first pipe section and is used at least to detect the air pressure in the first pipe section, and the pressure sensor is electrically connected to the controller.

[0022] Furthermore, the cross-sectional area of ​​the first flow channel is not less than the cross-sectional area of ​​the second flow channel.

[0023] Furthermore, a first sensor is provided on the first flow channel. The first sensor is used to detect the hydrogen content in the first flow channel and is electrically connected to the controller.

[0024] Furthermore, the second flow channel includes multiple channels, which are spaced apart on the side wall of the tank and close to the top cover. The pressure relief assembly includes multiple components, and the second flow channels are arranged in a one-to-one correspondence with the pressure relief assembly.

[0025] On the other hand, this application also provides a hydrogen production device, which includes the aforementioned pressure relief device.

[0026] In this application, at least one channel connects the gas storage chamber to the outside of the gas storage tank to transport the gas in the storage chamber to the outside of the gas storage tank, and at least another channel is equipped with a pressure relief component. When the gas pressure in the storage chamber is not greater than a predetermined gas pressure, the at least one channel connected to the outside of the gas storage tank transports the gas in the storage chamber to the outside of the gas storage tank to effectively prevent the gas pressure in the storage chamber from becoming too high. When the gas pressure in the storage chamber exceeds the predetermined gas pressure, the pressure difference drives the pressure relief component to deform from a first state to a second state, so that the channel equipped with the pressure relief component connects the gas storage chamber to the outside of the gas storage tank, increasing the communication area between the gas storage chamber and the outside of the gas storage tank, ensuring that the gas in the storage chamber can be transported to the outside of the gas storage tank more quickly to reduce the gas pressure in the storage chamber. When the pressure relief component deforms from the first state to the second state, the feedback component can promptly inform the operator that the pressure relief component has deformed, so that the operator is aware of the excessive gas pressure in the storage chamber, thereby ensuring that the operator can take timely measures to ensure the safety of the pressure relief device. The feedback component can also send a signal to the controller indicating deformation of the pressure relief assembly. Upon receiving the signal, the controller can promptly shut down the hydrogen production equipment to prevent the gas pressure in the storage chamber from continuing to increase. The feedback component effectively prevents secondary overpressure in the storage chamber, reduces the risk of channel rupture or even explosion, ensures the safety of the pressure relief device, and greatly improves the reliability of the hydrogen production equipment. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0028] Figure 1 This is a schematic diagram of the pressure relief device disclosed in this application;

[0029] Figure 2 for Figure 1 Enlarged view of point P in the middle;

[0030] Figure 3 This is an exploded view of the pressure relief component disclosed in this application.

[0031] The above figures include the following reference numerals:

[0032] 10. Gas storage tank; 12. Channel; 121. First flow channel; 1211. First sensor; 122. Second flow channel; 1221. First pipe section; 1222. Second pipe section; 13. Top cover; 14. Tank body; 20. Pressure relief assembly; 21. Mounting component; 211. First flange; 2111. First through hole; 212. Second flange; 2121. Second through hole; 22. Rupture component; 221. Rupture disc; 222. Retaining ring; 30. Feedback assembly; 31. Alarm; 311. Third flange; 32. Pressure sensor. Detailed Implementation

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0036] like Figures 1 to 3 As shown, this application provides a pressure relief device. The pressure relief device includes a gas storage tank 10, a pressure relief assembly 20, and a feedback assembly 30. The gas storage tank 10 has a gas storage chamber. The gas storage tank 10 has at least two channels 12, each channel 12 having a first end connected to the gas storage chamber and a second end of each channel 12 connected to the outside of the gas storage tank 10. The pressure relief assembly 20 is disposed in at least one channel 12. The pressure relief assembly 20 has a first state of closing the channel 12 and a second state of connecting the channel 12 to the outside of the gas storage tank 10. When the gas pressure in the gas storage chamber is not greater than a predetermined gas pressure, the pressure relief assembly 20 is in the first state. When the gas pressure in the gas storage chamber is greater than the predetermined gas pressure, creating a pressure difference with the outside of the gas storage tank 10, the pressure relief assembly 20 deforms from the first state to the second state under the action of the pressure difference. The feedback assembly 30 includes a controller and a feedback component. The feedback component is electrically connected to the controller and is used at least to provide feedback on the state of the pressure relief assembly 20.

[0037] In this embodiment, at least one channel 12 connects the gas storage chamber to the outside of the gas storage tank 10 to transport the gas in the gas storage chamber to the outside of the gas storage tank 10, and at least one other channel 12 is provided with a pressure relief component 20. When the gas pressure in the gas storage chamber is not greater than a predetermined gas pressure, at least one channel 12 connected to the outside of the gas storage tank 10 transports the gas in the gas storage chamber to the outside of the gas storage tank 10 to effectively prevent the gas pressure in the gas storage chamber from becoming too high. When the gas pressure in the gas storage chamber is greater than the predetermined gas pressure, the pressure difference drives the pressure relief component 20 to deform from a first state to a second state, so that the channel 12 provided with the pressure relief component 20 connects the gas storage chamber to the outside of the gas storage tank 10, increasing the communication area between the gas storage chamber and the outside of the gas storage tank 10, ensuring that the gas in the gas storage chamber can be transported to the outside of the gas storage tank 10 more quickly to reduce the gas pressure in the gas storage chamber. When the pressure relief component 20 deforms from the first state to the second state, the feedback component can promptly inform the staff that the pressure relief component 20 has deformed, informing them that there is excessive gas pressure in the storage chamber. This ensures that staff can take timely measures to ensure the safety of the pressure relief device. The feedback component can also send a signal to the controller indicating that the pressure relief component 20 has deformed. Upon receiving the signal, the controller can shut down the hydrogen production equipment in a timely manner to prevent the gas pressure in the storage chamber from continuing to increase. The feedback component 30 effectively prevents secondary overpressure in the storage chamber, reduces the risk of rupture or even explosion of the channel 12, ensures the safety of the pressure relief device, and greatly improves the reliability of the hydrogen production equipment.

[0038] Specifically, in this embodiment, the gas storage chamber is used to store oxygen produced by the hydrogen production equipment. When the controller shuts down the hydrogen production equipment, the equipment stops supplying oxygen to the gas storage chamber, effectively preventing the gas pressure in the storage chamber from over-pressurizing again. It is understood that the type of gas in the storage chamber is not limited to this, and this embodiment is not intended to be the only one.

[0039] In one embodiment, the gas storage tank 10 includes a top cover 13 and a tank body 14. The top cover 13 is disposed on the top of the tank body 14 and surrounds the tank body 14 to form a gas storage cavity. The channel 12 includes a first flow channel 121 and a second flow channel 122. The first flow channel 121 is disposed on the top cover 13 and communicates with the gas storage cavity, with one end of the first flow channel 121 away from the gas storage tank 10 communicating with the outside of the gas storage tank 10. The second flow channel 122 is disposed on the side wall of the tank body 14 and close to the top cover 13, and communicates with the gas storage cavity, with one end of the second flow channel 122 away from the gas storage tank 10 communicating with the outside of the gas storage tank 10. A pressure relief assembly 20 and a feedback component are disposed in the second flow channel 122. When the pressure inside the gas storage cavity is not greater than a predetermined pressure, gas can flow out from the first flow channel 121 to the outside of the gas storage tank 10. The first flow channel 121 is located on the top cover 13, allowing gas to rise to the top cover 13 and flow out of the gas storage tank 10 more quickly through the first flow channel 121, thus expelling gas faster and effectively preventing excessive pressure in the gas storage chamber. When the pressure in the gas storage chamber exceeds a predetermined pressure and pressure relief is required, gas can be rapidly discharged simultaneously through the first flow channel 121 and the second flow channel 122. Compared to the pressure relief method using a single pipe in the prior art, this application has higher reliability and safety, and a faster pressure relief speed. The second flow channel 122 is located on the tank body 14, and the second flow channel 122 and the first flow channel 121 are respectively located at different positions in the gas storage tank 10, effectively preventing interference between the first flow channel 121 and the second flow channel 122. The first flow channel 121 and the second flow channel 122 are respectively located on the top cover 13 and the side wall of the tank body 14. Their reasonable distribution effectively prevents excessive perforation in any area from affecting the structural strength of the gas storage tank 10, enhancing its structural stability and enabling it to withstand internal pressure changes and external environmental influences, thus extending its service life. The second flow channel 122 is located on the side wall of the tank body 14 near the top cover 13. This allows for faster discharge of high-pressure gas accumulated near the top of the tank body 14, preventing excessive gas accumulation in a localized area. This optimizes the gas flow path, improves pressure relief efficiency, and reduces the pressure within the storage chamber more effectively and promptly, ensuring the safety of the hydrogen production equipment.

[0040] The cross-sectional area of ​​the first flow channel 121 is no less than that of the second flow channel 122. The larger cross-sectional area of ​​the first flow channel 121 allows for faster gas delivery to the outside of the gas storage tank 10 when the gas pressure in the storage chamber is normal, thus improving air output efficiency. When the gas pressure in the storage chamber is abnormally high, the gas flow rate in the second flow channel 122 is faster, which helps to increase the pressure relief rate.

[0041] The second flow channel 122 includes a first pipe section 1221 and a second pipe section 1222. The pressure relief assembly 20 includes a mounting component 21 and a rupture element 22. A mounting channel is provided through the mounting component 21. The first pipe section 1221 and the second pipe section 1222 are respectively connected to opposite sides of the mounting component 21 and communicate with the mounting channel. The end of the first pipe section 1221 away from the mounting component 21 communicates with the gas storage tank 10, and the end of the second pipe section 1222 away from the mounting component 21 communicates with the outside of the gas storage tank 10. The rupture element 22 is at least partially disposed within the mounting channel and seals the mounting channel to isolate the first pipe section 1221 and the second pipe section 1222 from each other. The rupture element 22 ruptures under the action of a pressure difference to deform from a first state to a second state.

[0042] When the gas pressure inside the gas storage chamber is not greater than the predetermined gas pressure, the rupture element 22 is in the first state and keeps the installation channel closed. The rupture element 22 closes the installation channel, isolating the first pipe section 1221 and the second pipe section 1222 from each other. When the gas pressure inside the gas storage chamber is greater than the predetermined gas pressure and a pressure difference is formed with the outside of the gas storage tank 10, the rupture element 22 ruptures under the action of the pressure difference, deforming from the first state to the second state. The rupture element 22 connects the first pipe section 1221 and the second pipe section 1222, so that the gas storage chamber is connected to the outside of the gas storage tank 10 to achieve pressure relief. The first pipe section 1221 and the second pipe section 1222 are connected by the mounting component 21. This structure makes the flow of gas in the second flow channel 122 smoother. During the pressure relief process, the gas can be discharged from the gas storage tank 10 to the outside of the gas storage tank 10 through the first pipe section 1221, the installation channel and the second pipe section 1222, reducing the resistance and turbulence of gas flow and improving the pressure relief efficiency. The rupture element 22 can operate accurately under pressure differential, promptly opening the installation channel for pressure relief, thus improving the reliability and accuracy of the pressure relief device. When the rupture element 22 ruptures under pressure differential and needs replacement, workers can easily disassemble the installation component 21, remove the damaged rupture element 22, and install a new one without requiring large-scale disassembly and adjustment of the entire pressure relief device or hydrogen production equipment. This reduces maintenance costs and difficulty, and improves the maintainability of the hydrogen production equipment. The first pipe section 1221 and the second pipe section 1222 are detachably connected, which not only facilitates the replacement of the rupture element 22 but also allows for the selection of appropriate specifications for the first pipe section 1221, the second pipe section 1222, the installation component 21, and the rupture element 22 for assembly according to actual needs, thereby expanding the applicability of the pressure relief assembly 20.

[0043] The rupture component 22 includes a rupture disc 221 and a retaining ring 222. A third through hole is provided through the retaining ring 222, and the rupture disc 221 is embedded in and closes the third through hole. The mounting component 21 includes a first flange 211 and a second flange 212. The first flange 211 is connected to the first pipe section 1221. A first through hole 2111 is provided through the first flange 2111, communicating with the first pipe section 1221. The second flange 212 is connected to the first pipe section 1221, and a second through hole 2121 is provided through the second flange 2121, communicating with the second pipe section 1222. The retaining ring 222 connects the first flange 211 and the second flange 212. The first through hole 2111, the third through hole, and the second through hole 2121 are correspondingly arranged and interconnected to form an installation channel. In the first state, the rupture disc 221 is embedded in and closes the third through hole. The rupture disc 221 has a precise burst pressure setting. By selecting a suitable rupture disc 221, the pressure value during pressure relief can be precisely controlled according to the actual operating requirements and safety standards of the hydrogen production equipment. When the pressure in the gas storage chamber reaches the predetermined burst pressure of the rupture disc 221, the rupture disc 221 will rupture rapidly, and the first through hole 2111, the third through hole, and the second through hole 2121 will connect to each other. The rupture disc 221 will promptly open the installation channel to relieve pressure, effectively protecting the hydrogen production equipment from damage caused by excessive pressure. The rupture disc 221 also has a high response time, ≤10ms. The rupture disc 221 can cope with sudden pressure increases in the gas storage chamber, ensuring that the pressure relief device can respond quickly and achieve pressure relief, thus ensuring the safety of the pressure relief device. The installation and replacement of the rupture disc 221 are convenient through the first flange 211, the second flange 212, and the retaining ring 222. When the rupture disc 221 needs to be installed, it can be embedded in the third through hole of the retaining ring 222, and then the retaining ring 222 can be installed between the first flange 211 and the second flange 212. Installation is completed by tightening with bolts or other connecting parts. When the rupture disc 221 breaks and needs replacement, simply loosen the connecting parts, remove the retaining ring 222, and the old rupture disc 221 can be easily removed and replaced with a new one, greatly shortening maintenance time and improving the maintainability of the pressure relief device. The first flange 211 and the second flange 212 are connected to the first pipe section 1221 and the second pipe section 1222 respectively, and the retaining ring 222 is connected between the first flange 211 and the second flange 212, enhancing the structural stability and strength of the rupture disc 221 and effectively preventing premature breakage due to vibration or other reasons.

[0044] In one embodiment, the feedback component includes an alarm 31. The alarm 31 is mounted on the mounting component 21 and connected to the rupture element 22. When the rupture element 22 ruptures, it triggers the alarm 31 to send an alarm signal to the controller. When the pressure inside the gas storage chamber is too high, and the rupture element 22 ruptures under the pressure difference to release pressure, the alarm 31 responds immediately and sends an alarm signal to the controller. Personnel can promptly learn of the abnormal pressure inside the gas storage chamber and that gas is being released through the pressure relief device. They can then quickly take countermeasures, such as checking equipment operating parameters and investigating the cause of the abnormal pressure increase, to avoid more serious equipment damage or safety accidents caused by the abnormal pressure. The alarm 31 reduces the risk of explosions and other safety accidents caused by the failure to detect abnormal pressure in time, ensuring the safety of personnel and equipment. After receiving the alarm signal, the controller shuts down the hydrogen production equipment, ceasing the supply of gas to the gas storage chamber, effectively preventing the risk of the gas pressure in the storage chamber overpressure again.

[0045] Specifically, the alarm 31 is equipped with a broken wire alarm circuit. One end of the signal line is located on the outer periphery of the metal blade and connected to the lead-out terminal of the broken wire alarm circuit. The other end of the signal line is connected to the rupture disc 221. When the rupture disc 221 ruptures, the metal blade cuts the signal line, triggering the broken wire alarm circuit, which in turn activates the alarm 31 to send an alarm signal to the controller. At the same time, the alarm 31 can also emit a buzzer, light signal, etc.

[0046] Alternatively, the alarm 31 is equipped with a displacement sensor. When the rupture disc 221 reaches the burst pressure, the rupture disc 221 actuates (ruptures or detaches). At this time, the displacement of the rupture disc 221 is captured by the displacement sensor, which transmits a signal to the alarm 31. Upon receiving the signal, the alarm 31 issues an alarm signal. The alarm 31 is connected to the second pipe section via the third flange 311.

[0047] In one embodiment, the feedback component further includes a pressure sensor 32. The pressure sensor 32 is disposed in the first pipe section 1221 and is used at least to detect the gas pressure within the first pipe section 1221, and the pressure sensor 32 is electrically connected to the controller. The pressure sensor 32 can monitor the gas pressure within the first pipe section 1221 in real time and continuously. Compared to relying solely on the action of the rupture disc 221 to determine system pressure anomalies, the pressure sensor 32 can promptly capture even minor pressure changes, providing more timely and accurate pressure information. This allows operators or the controller to detect pressure fluctuations in the gas storage chamber earlier, enabling them to take preventative measures to avoid further pressure increases to the burst pressure of the rupture disc 221, thereby reducing unnecessary replacement of the rupture disc 221 and downtime of the hydrogen production equipment. The pressure sensor 32 can also effectively prevent overpressure or even explosion caused by the rupture disc 221 failing to activate in time due to temperature fluctuations or vibration. The pressure data collected by the pressure sensor 32 can be recorded to form historical data. This data is of significant value for analyzing the long-term operating status of the hydrogen production equipment, evaluating equipment performance, and optimizing system design and operation. By analyzing historical data, we can summarize the patterns of pressure changes, identify factors that may cause pressure anomalies, provide a reference for improving the safety and stability of hydrogen production equipment, and help to develop more reasonable maintenance plans and safety standards.

[0048] Furthermore, a first sensor 1211 is installed on the first flow channel 121. The first sensor 1211 is used to detect the hydrogen content within the first flow channel 121, and is electrically connected to the controller. Hydrogen is a flammable and explosive gas, and excessively high hydrogen concentrations can lead to serious safety accidents. The first sensor 1211 can monitor the hydrogen content within the first flow channel 121 in real time, and promptly transmit a signal to the controller before the hydrogen content shows an abnormal increase and reaches a dangerous concentration. The controller can issue an alarm based on a preset threshold to alert personnel, thereby achieving early warning and giving them sufficient time to take measures such as checking equipment, increasing ventilation, and stopping related operations to prevent further increases in hydrogen concentration and avoid potential explosions or fires. Specifically, the first sensor 1211 can be installed on the first flow channel 121 via a flange assembly or similar means.

[0049] Furthermore, multiple second flow channels 122 are provided, spaced apart on the side wall of the tank 14 and close to the top cover 13. Multiple pressure relief components 20 are also provided, with each second flow channel 122 corresponding to one of the pressure relief components 20. The multiple spaced second flow channels 122 ensure more uniform pressure relief within the tank 14. When the pressure inside the tank 14 is too high and pressure relief is required, the pressure can be released relatively evenly through the multiple second flow channels 122, avoiding uneven stress on the tank 14 that might result from concentrated pressure release at one point. This reduces the risk of deformation or damage to the tank 14 due to uneven stress, improving the safety and service life of the tank 14. The simultaneous operation of the multiple second flow channels 122 and the pressure relief components 20 can reduce the pressure inside the tank 14 to a safe level in a shorter time, effectively preventing serious accidents such as explosions caused by a continuous increase in pressure inside the tank 14 due to untimely pressure relief. Even if one of the second flow channels 122 or its corresponding pressure relief component 20 malfunctions, such as being blocked or unable to open normally, the other second flow channels 122 and pressure relief components 20 can still work normally and continue to complete the pressure relief task, ensuring the safety of the pressure relief device.

[0050] On the other hand, this application also provides a hydrogen production device that includes the aforementioned pressure relief device. Therefore, this hydrogen production device includes all the technical effects of the aforementioned pressure relief device. Since the technical effects of the pressure relief device have already been described in detail above, they will not be repeated here.

[0051] In summary, this application features a millisecond-level pressure relief response speed. Combined with the rapid rupture characteristics of the rupture disc 221, the response speed is 95% faster than traditional pressure relief valves. The feedback component 30 can promptly report the status of the rupture disc 221 and trigger equipment shutdown, preventing overpressure at its source. This application optimizes maintenance costs; online monitoring of the feedback component replaces manual inspection, improving maintenance efficiency by 70%. The detachable connection structure of the pressure relief component 20 shortens maintenance downtime and reduces production losses.

[0052] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0053] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0054] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pressure relief device, characterized in that, include: A gas storage tank (10) is provided with a gas storage cavity inside the gas storage tank (10). At least two channels (12) are provided on the gas storage tank (10). The first end of each channel (12) is connected to the gas storage cavity, and the second end of each channel (12) opposite to the first end is connected to the outside of the gas storage tank (10). A pressure relief assembly (20) is disposed in at least one of the channels (12). The pressure relief assembly (20) has a first state of closing the channel (12) and a second state of connecting the channel (12) to the outside of the gas storage chamber and the gas storage tank (10). When the gas pressure in the gas storage chamber is not greater than a predetermined gas pressure, the pressure relief assembly (20) is in the first state. When the gas pressure in the gas storage chamber is greater than the predetermined gas pressure and there is a pressure difference with the outside of the gas storage tank (10), the pressure relief assembly (20) deforms from the first state to the second state under the action of the pressure difference. The feedback component (30) includes a controller and a feedback element, the feedback element being electrically connected to the controller, and the feedback element being used at least to provide feedback on the status of the pressure relief component (20).

2. The pressure relief device according to claim 1, characterized in that, The gas storage tank (10) includes a top cover (13) and a tank body (14). The top cover (13) is disposed on the top of the tank body (14) and surrounds the tank body (14) to form the gas storage cavity. The channel (12) includes: The first flow channel (121) is disposed on the top cover (13) and communicates with the gas storage chamber. The end of the first flow channel (121) away from the gas storage tank (10) is communicated with the outside of the gas storage tank (10). The second flow channel (122) is disposed on the side wall of the tank (14) and close to the top cover (13), and the second flow channel (122) is connected to the gas storage chamber. The end of the second flow channel (122) away from the gas storage tank (10) is connected to the outside of the gas storage tank (10). The pressure relief component (20) and the feedback component are disposed in the second flow channel (122).

3. The pressure relief device according to claim 2, characterized in that, The second flow channel (122) includes a first pipe section (1221) and a second pipe section (1222), and the pressure relief assembly (20) includes: The mounting component (21) has an installation channel running through it. The first pipe section (1221) and the second pipe section (1222) are respectively connected to the opposite sides of the mounting component (21) and communicate with the installation channel. The end of the first pipe section (1221) away from the mounting component (21) is connected to the gas storage tank (10), and the end of the second pipe section (1222) away from the mounting component (21) is connected to the outside of the gas storage tank (10). A rupture element (22) is at least partially disposed within the installation channel and closes the installation channel to isolate the first pipe segment (1221) and the second pipe segment (1222) from each other. The rupture element (22) ruptures under the action of the pressure difference to deform from the first state to the second state.

4. The pressure relief device according to claim 3, characterized in that, The rupture component (22) includes a rupture disc (221) and a retaining ring (222). A third through hole is provided on the retaining ring (222). The rupture disc (221) is embedded in the third through hole and closes the third through hole. The mounting component (21) includes: A first flange (211) is connected to the first pipe section (1221). A first through hole (2111) is provided on the first flange (2111), and the first through hole (2111) is connected to the first pipe section (1221). The second flange (212) is connected to the first pipe section (1221). A second through hole (2121) is provided on the second flange (212), and the second through hole (2121) is connected to the second pipe section (1222). The fixing ring (222) is connected between the first flange (211) and the second flange (212). The first through hole (2111), the third through hole and the second through hole (2121) are correspondingly arranged and interconnected to form the installation channel. In the first state, the rupture disc (221) is embedded in the third through hole and closes the third through hole.

5. The pressure relief device according to claim 3, characterized in that, The feedback component includes: An alarm (31) is installed on the mounting component (21) and connected to the blasting component (22). When the blasting component (22) breaks, the alarm (31) sends an alarm signal to the controller.

6. The pressure relief device according to claim 3, characterized in that, The feedback component also includes: A pressure sensor (32) is disposed in the first pipe section (1221) and is used at least to detect the air pressure in the first pipe section (1221), and the pressure sensor (32) is electrically connected to the controller.

7. The pressure relief device according to any one of claims 2 to 6, characterized in that, The cross-sectional area of ​​the first flow channel (121) is not less than the cross-sectional area of ​​the second flow channel (122).

8. The pressure relief device according to any one of claims 2 to 6, characterized in that, A first sensor (1211) is provided on the first flow channel (121). The first sensor (1211) is used to detect the hydrogen content in the first flow channel (121). The first sensor (1211) is electrically connected to the controller.

9. The pressure relief device according to any one of claims 2 to 6, characterized in that, The second flow channel (122) includes multiple channels, and the multiple channels (122) are spaced apart on the side wall of the tank (14) and close to the top cover (13). The pressure relief assembly (20) includes multiple channels, and the second flow channels (122) are arranged in a one-to-one correspondence with the pressure relief assembly (20).

10. A hydrogen production device, characterized in that, The hydrogen production equipment includes the pressure relief device as described in any one of claims 1 to 9.

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