Cabinet with safe explosion venting function

Abstract

The invention discloses a cabinet with a safe explosion venting function, and the cabinet comprises a cabinet body which is provided with a sealed installation cavity, an explosion venting port which communicates the interior and exterior of the installation cavity, and an explosion venting channel which communicates with the explosion venting port; the explosion venting opening is located in the inner side of the explosion venting channel. The explosion venting device comprises an explosion venting piece suitable for shielding the explosion venting opening, and the explosion venting device is suitable for enabling the explosion venting piece to act relative to the cabinet body under the action of internal pressure of the cabinet body so as to open the explosion venting opening; and the explosion venting channel is suitable for providing a space for the explosion venting piece to act relative to the cabinet body. According to the cabinet, the problem that the protection performance is reduced due to damage of the explosion venting device when explosion venting is not carried out can be solved, and meanwhile, the problem that operators are injured or the explosion venting device is lost due to the fact that the explosion venting device is ejected out relative to the cabinet body after explosion venting is carried out can be solved.

Description

Technical Field

[0001] This invention relates to the field of electrical cabinet technology, and specifically to a cabinet with a safety explosion relief function. Background Technology

[0002] In some electrical cabinets, such as electrochemical energy storage cabinets and converter cabinets, when the batteries and power components inside experience thermal runaway, a large amount of heat is generated, causing the gas inside the cabinet to expand and the internal pressure to increase dramatically. This can not only easily damage the electrical components inside the cabinet, but also cause the cabinet to burst at weak points or the cabinet door to blow open.

[0003] Currently, to address the issue of increased internal pressure within the server racks, explosion relief devices are installed, such as explosion relief valves directly mounted on the outer wall of the rack. However, under normal operating conditions, these devices are prone to falling off due to external forces (such as human error or strong winds and rain). Once a device falls off, it reduces the rack's protective capabilities, posing a risk of damage to the electrical components inside. Furthermore, during an explosion, the device may be ejected from the rack, potentially injuring operators or resulting in its loss. Summary of the Invention

[0004] The purpose of this invention is to overcome the aforementioned defects or problems in the prior art and to provide a cabinet with a safe explosion relief function. This cabinet can prevent the protection from being reduced due to damage to the explosion relief device when not in explosion relief mode, and can also prevent the explosion relief device from being ejected relative to the cabinet after an explosion relief occurs, thus avoiding injury to operators or loss of the explosion relief device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Technical Solution 1: A cabinet with explosion venting function, comprising: a cabinet body having a sealed mounting cavity and an explosion vent connecting the inside and outside of the mounting cavity, and an explosion venting channel communicating with the explosion vent; the explosion vent being located inside the explosion venting channel; an explosion venting device including an explosion venting element adapted to block the explosion vent, and the explosion venting device being adapted to be subjected to internal pressure of the cabinet body to cause the explosion venting element to move relative to the cabinet body to open the explosion vent; the explosion venting channel being adapted to provide space for the explosion venting element to move relative to the cabinet body.

[0007] Technical Solution 2 based on Technical Solution 1: A protective section of a preset length is formed between the outlet end of the explosion relief channel and the explosion relief port. The protective section forms a separation between the explosion relief port and the outermost surface of the cabinet, so as to prevent foreign objects from reaching the explosion relief port under the action of gravity.

[0008] Technical Solution 3 based on Technical Solution 2: The explosion relief channel is located at the bottom of the cabinet and / or the side of the cabinet, and the explosion relief port is provided corresponding to the explosion relief channel and formed inside the explosion relief channel.

[0009] Technical Solution 4 based on Technical Solution 3: The explosion relief channel is defined by the bottom wall of the cabinet and the legs of the cabinet, and the explosion relief port faces downward and is located on the bottom wall of the cabinet.

[0010] Technical solution five based on technical solution three: The explosion relief channel is located inside the cabinet and its outlet is located on the bottom wall or side wall of the cabinet.

[0011] Technical solution six based on technical solution five: The cabinet includes a body and an explosion relief cylinder; the body is provided with the mounting cavity; the explosion relief cylinder is installed on the body and is used to form the explosion relief channel; the explosion relief port is located on the inner wall of the explosion relief cylinder and communicates with the mounting cavity.

[0012] Technical solution seven, based on technical solution six, further includes several electrical components, some of which are installed in the mounting cavity; the explosion venting channel extends into the mounting cavity so that the explosion venting port is close to the electrical components in the sealed chamber.

[0013] Technical solution eight based on technical solution seven: The electrical components located in the mounting cavity include explosive devices that are prone to thermal runaway and stable devices that are not prone to thermal runaway; the explosion vent is closer to the explosive device than the stable device.

[0014] Technical solution nine based on technical solution eight: The cabinet includes at least one set of explosion relief units; each explosion relief unit includes two explosion relief cylinders, and the cabinet is equipped with two explosion relief devices corresponding to the two explosion relief cylinders; the two explosion relief cylinders in each explosion relief unit are symmetrically arranged and located on both sides of the explosive device in the mounting cavity; in each explosion relief unit, the explosion relief ports on the two explosion relief cylinders are arranged facing each other.

[0015] Technical solution ten based on technical solution five: The main body is provided with a heat dissipation duct for dissipating heat from at least some of the electrical components located outside the mounting cavity; the explosion relief cylinder is provided with a ventilation opening connecting the heat dissipation duct and the explosion relief channel.

[0016] Technical solution eleven based on technical solution five: The cabinet also includes waterproof louvers, and each explosion relief cylinder is equipped with a waterproof louver to cover the outlet end of the explosion relief channel.

[0017] Technical solution 12, based on any one of technical solutions 1 to 11: The explosion relief device further includes a fixing strip for fixing the explosion relief component; the fixing strip is fixed to the cabinet and located around the explosion relief port, and an installation gap is formed between it and the cabinet; the explosion relief component is inserted into the installation gap and limited by the fixing strip and the cabinet, and it is configured to detach from the installation gap by deformation after being subjected to internal pressure of the cabinet.

[0018] Based on technical solution 12, technical solution 13: the explosion relief device further includes a buffer member located between the fixed pressure bar and the explosion relief member; the buffer member is configured to be compressed by the fixed pressure bar and the explosion relief member to provide a preload force to the explosion relief member.

[0019] Technical solution fourteen based on technical solution thirteen: the fixing strip has at least one notch along its length direction, and the fixing strip does not contact the buffer at the notch position, so as to adjust the preload provided by the buffer to the explosion relief component.

[0020] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects:

[0021] Technical solution one provides a cabinet with a safety explosion relief function, which includes a cabinet body and an explosion relief device. The cabinet body is provided with an explosion relief port that connects the inside and outside of the cabinet body. The explosion relief component in the explosion relief device can block the explosion relief port. When the internal pressure of the cabinet body increases sharply to a preset threshold, the explosion relief component can move relative to the cabinet body to open the explosion relief port, so that the internal gas can be discharged from the explosion relief port, thereby reducing damage to the internal components and the cabinet body.

[0022] The cabinet is equipped with an explosion vent channel that connects to the explosion vent. The explosion vent is located inside the explosion vent channel. Since it is not directly installed on the outer wall of the cabinet, under normal operating conditions, the explosion vent will not fall off due to direct external force (such as human error or strong winds and rain), thus ensuring the protection of the cabinet. In the event of an explosion, the explosion vent will fall into the explosion vent channel, which will simultaneously release the high-pressure gas inside the cabinet, preventing it from being ejected directly from the cabinet. This avoids the problem of operator injury or loss of the explosion vent.

[0023] In technical solution two, after the explosion is vented, the explosion venting channel can prevent external foreign objects from reaching the explosion vent under the influence of gravity. These foreign objects can be rainwater or dust, etc. Because the explosion vent is blocked by the explosion venting channel, it is difficult for foreign objects to enter. Thus, even when the explosion venting device explodes, external rainwater and dust are unlikely to enter the cabinet. Furthermore, a protective section is formed between the outlet end of the explosion venting channel and the explosion vent. This protective section has a certain length, so even if a small amount of rainwater and dust enters the outlet end of the explosion venting channel, the protective section between the outlet end of the explosion venting channel and the explosion vent will prevent this small amount of rainwater and dust from easily entering the explosion vent.

[0024] In technical solution three, the explosion vent is located at the bottom or side of the cabinet, and the explosion vent is located inside the explosion vent. When the explosion vent is located at the bottom of the cabinet, the cabinet can effectively protect the explosion vent from rain and dust. When the explosion vent is located on the side of the cabinet, the explosion vent can be easily operated.

[0025] In technical solution four, the explosion vent is defined by the bottom wall of the cabinet and the legs of the cabinet, and the explosion vent opening faces downward and is located on the bottom wall of the cabinet. Since the explosion vent opening faces downward, and rainwater, dust and other substances move under the action of gravity, they are difficult to enter the explosion vent, thus making the rainproof and dustproof effects more significant.

[0026] In technical solution five, the explosion vent is located inside the cabinet and the outlet is located on the bottom or side wall of the cabinet. In other words, the explosion vent is formed by the cabinet itself. At this time, the explosion vent is blocked by the explosion vent, which improves the rainproof and dustproof effect without affecting the normal explosion vent.

[0027] In technical solution six, the cabinet includes a main body and an explosion relief cylinder. The explosion relief cylinder forms the aforementioned explosion relief channel and facilitates the installation of explosion relief vents. Furthermore, an independent explosion relief cylinder is provided, which can be removed from the main body or reinstalled thereon. When the explosion relief device opens the explosion relief vent, the entire explosion relief cylinder can be removed from the main body, the explosion relief device can be reinstalled, and then the explosion relief cylinder can be installed back onto the main body. This allows for the reuse of the explosion relief device and facilitates the adjustment of the explosion relief pressure and other parameters.

[0028] In technical solution seven, the explosion relief cylinder extends into the mounting cavity of the main body, so that the explosion relief port can be closer to the electrical components inside the mounting cavity. Since the increase in pressure inside the cabinet is usually caused by abnormal thermal runaway of electrical components, which leads to an increase in the internal temperature of the cabinet, bringing the explosion relief port closer to the electrical components also makes the explosion relief port closer to the heat source inside the cabinet. The explosion relief device can sense the increased pressure more quickly and can quickly discharge the internal pressure of the cabinet, thereby further reducing the damage to the components and cabinet body caused by the rapid increase in internal pressure.

[0029] In technical solution eight, the electrical components installed in the cavity include explosive devices and stabilizing devices. The explosion vent is closer to the explosive devices, making the explosion vent even closer to the heat source inside the cabinet, thereby further improving the speed at which the explosion venting device can sense abnormal pressure inside the cabinet.

[0030] In technical solution nine, at least one set of explosion relief units is provided. Each explosion relief unit includes two symmetrically arranged explosion relief cylinders, which are equipped with two corresponding explosion relief devices. This provides more explosion relief points, thereby further improving the explosion relief effect and reducing damage to components and the cabinet. At the same time, the explosion relief ports on the two explosion relief cylinders are arranged facing each other, and the easily explosive components in the installation cavity are located between the two explosion relief cylinders. This arrangement allows the two sides of these easily explosive components to be relatively close to the explosion relief ports, which helps to improve the detection speed of the explosion relief device to abnormal pressure inside the cabinet, and can further improve the explosion relief effect.

[0031] In technical solution ten, the main body is equipped with a heat dissipation duct, which can be used to dissipate heat for some electrical components in the cabinet. At the same time, the heat dissipation duct is connected to the explosion relief cylinder through the ventilation port. The explosion relief cylinder can not only play the role of explosion relief, but also play the role of ventilation and heat dissipation, making the overall layout of the cabinet more compact and reducing the volume of the cabinet.

[0032] In technical solution eleven, waterproof louvers are installed to further reduce the amount of rainwater entering the vent.

[0033] In technical solution twelve, the explosion venting device also includes a fixing strip. An installation gap can be formed between the fixing strip and the wall of the explosion venting cylinder surrounding the explosion vent. After the explosion venting component is inserted into this installation gap, it can be limited by the fixing strip and the wall of the explosion venting cylinder, but it will not be firmly locked. When the internal pressure of the cabinet increases sharply, the explosion venting component can deform and dislodge from the installation gap, thereby opening the explosion vent. The explosion venting device using this technical solution is convenient to install and remove, can be reused, and provides good protection under normal operating conditions of the electrical cabinet, ensuring a high level of protection inside the installation cavity.

[0034] In technical solution thirteen, the explosion relief device is also equipped with a buffer component. The buffer component can provide pre-tightening force for the explosion relief component. Under normal circumstances, it can make the explosion relief component more securely installed on the explosion relief cylinder, while when the pressure inside the cabinet increases sharply, it will not affect the explosion relief component from detaching from the cabinet.

[0035] In technical solution fourteen, notches are set on the fixed pressure strip. By adjusting the length and number of notches, the contact area between the fixed pressure strip and the buffer can be adjusted. When the contact area is larger, the pressure of the fixed pressure strip on the buffer is greater, and the pre-tightening force of the buffer on the explosion relief component is also greater. When the contact area is smaller, that is, the longer the notch or the more notches, the pressure of the fixed pressure strip on the buffer is smaller, and the pre-tightening force of the buffer on the explosion relief component is also smaller. Thus, the pressure threshold of the explosion relief component detaching from the cabinet can be easily adjusted according to the actual situation. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments are briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is an overall schematic diagram of Embodiment 1 of the cabinet with explosion-proof safety function provided by the present invention;

[0038] Figure 2 A schematic diagram of the structure of Embodiment 1 of the cabinet with explosion-proof safety function provided by the present invention;

[0039] Figure 3 for Figure 2 Schematic diagram of the structure of the central venting explosion tube;

[0040] Figure 4 for Figure 2 Cross-sectional schematic diagram of the central venting explosion tube;

[0041] Figure 5 for Figure 2 A schematic diagram of the explosion of the centrally leaking detonator;

[0042] Figure 6 for Figure 5 Explosion diagram of the explosion venting device;

[0043] Figure 7 An external schematic diagram of Embodiment 1 of the cabinet with explosion-proof safety function provided by the present invention;

[0044] Figure 8 A schematic diagram of the heat dissipation airflow of Embodiment 1 of the cabinet with explosion-proof function provided by the present invention;

[0045] Figure 9 This is an overall schematic diagram of Embodiment 2 of the cabinet with explosion-proof safety function provided by the present invention;

[0046] Figure 10This is an overall schematic diagram of Embodiment 3 of the cabinet with explosion-proof safety function provided by the present invention.

[0047] Explanation of key figure labels:

[0048] 1. Cabinet; 2. Mounting cavity; 3. Explosion vent; 4. Explosion venting channel; 5. Explosion venting device; 6. Explosion venting component; 7. Outlet end; 8. Protective section; 9. Body; 10. Explosion venting cylinder; 11. Electrical components; 12. Heat dissipation duct; 13. Ventilation opening; 14. Waterproof louvers; 15. Fixing strip; 16. Buffer component; 17. Notch; 18. Fan; 19. Limiting rib; 20. Reactor; 21. Air inlet; 22. Support leg; 23. Fixing part; 24. Clamping part. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0050] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0051] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this invention, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this invention.

[0052] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.

[0053] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0054] Example 1

[0055] Embodiment 1 of the present invention provides a cabinet with a safety explosion relief function, referring to... Figure 1 and Figure 2 The cabinet mainly includes a cabinet body 1 and an explosion relief device 5. When an abnormal increase in pressure occurs inside the cabinet body 1, the explosion relief device 5 can guide the gas inside the cabinet body 1 to escape, thereby playing an explosion relief role.

[0056] Reference Figure 1 The cabinet 1 has a sealed mounting cavity 2, and an explosion vent 3 connecting the inside and outside of the mounting cavity 2, as well as an explosion vent channel 4 communicating with the explosion vent 3. The explosion vent 3 is located inside the explosion vent channel 4, and the explosion vent channel 4 is adapted to prevent external foreign objects from reaching the explosion vent 3 under the action of gravity. Simultaneously, an explosion venting device 5 is installed on the cabinet 1, which includes an explosion venting element 6 adapted to block the explosion vent 3, and the explosion venting device 5 is adapted to be activated by the internal pressure of the cabinet 1, causing the explosion venting element 6 to move relative to the cabinet 1 to open the explosion vent 3. The explosion vent channel 4 is also adapted to provide space for the explosion venting element 6 to move relative to the cabinet 1.

[0057] Based on the above structure, when the internal pressure of the cabinet 1 increases sharply to a preset threshold, the explosion relief component 6 can move relative to the cabinet 1 and open the explosion relief port 3, allowing the internal gas to be discharged from the explosion relief port 3, reducing damage to the internal components and the cabinet 1. The explosion relief device 5 can be a conventional explosion relief mechanism; however, this embodiment proposes a new explosion relief device 5, which will be described in detail below.

[0058] Reference Figure 1 The cabinet 1 is equipped with an explosion vent channel 4 that communicates with the explosion vent 3, and the explosion vent 3 is located inside the explosion vent channel 4.

[0059] Since it is not directly installed on the outer wall of the cabinet 1, under normal operating conditions, the explosion relief device 5 will not fall off due to direct external force (such as human error or strong winds and rain), thus ensuring the protection of the cabinet 1. In the event of an explosion, the explosion relief device 5 will fall into the explosion relief channel 4, and the explosion relief channel 4 will release the high-pressure gas inside the cabinet, preventing it from being ejected directly out of the cabinet, thereby avoiding injury to operators or loss of the explosion relief device 4.

[0060] Furthermore, placing the explosion vent 3 inside the explosion vent channel 4 allows the explosion vent channel 4 to prevent external foreign objects from reaching the explosion vent 3 under the influence of gravity. These foreign objects could be rainwater or dust. Because the explosion vent 3 is blocked by the explosion vent channel 4, it is difficult for foreign objects to enter the explosion vent 3. Thus, even when the explosion vent device 5 explodes, external rainwater and dust are unlikely to enter the interior of the cabinet 1. Simultaneously, the explosion vent channel 4 also provides space for the explosion vent component 6 to move relative to the cabinet 1. When the explosion vent component 6 moves, it enters the explosion vent channel 4, which simultaneously releases the high-pressure gas inside the cabinet 1.

[0061] Reference Figure 1 The outlet end 7 of the explosion relief channel 4 forms a protective section 8 of a preset length between the explosion relief port 3 and the explosion relief port 3. The protective section 8 forms a separation between the explosion relief port 3 and the outermost surface of the cabinet 1 to prevent foreign objects from reaching the explosion relief port 3 under the action of gravity.

[0062] Specifically, the outlet end 7 of the explosion venting channel 4 refers to the end of the explosion venting channel 4 that connects to the outside of the cabinet 1. It can extend out of the side wall of the cabinet 1 or be directly installed on the side wall of the cabinet 1. Between the outlet end 7 of the explosion venting channel 4 and the explosion vent 3, this part of the explosion venting channel 4 can form a protective section 8 of a certain length. The protective section 8 is actually also part of the explosion venting channel 4, but the protective section 8 further limits the distance between the outlet end 7 of the explosion venting channel 4 and the explosion vent 3. This distance allows a small amount of rainwater and dust to enter the outlet end 7 of the explosion venting channel 4. Because the protective section 8 blocks the entrance between the outlet end 7 of the explosion venting channel 4 and the explosion vent 3, this small amount of rainwater and dust is not easily allowed to enter the explosion vent 3.

[0063] As an optional implementation, the explosion vent 4 can be located at the bottom and / or side of the cabinet 1, and the explosion vent 3 is formed inside the explosion vent 4. When the explosion vent 4 is located at the bottom of the cabinet 1, the cabinet 1 effectively protects the explosion vent 3 from rain and dust. When the explosion vent 4 is located on the side of the cabinet 1, the explosion vent 5 can be easily operated. In this embodiment, the explosion vent 4 is located on the side of the cabinet 1, and the explosion vent 3 is located inside the explosion vent 4.

[0064] As an optional implementation, the explosion venting channel 4 is located inside the cabinet 1, and its outlet end 7 is located on the bottom wall or side wall of the cabinet 1. In this embodiment, the outlet end 7 of the explosion venting channel 4 is located on the side wall of the cabinet 1.

[0065] Specifically, in this embodiment, referring to Figure 2The cabinet 1 includes a body 9 and an explosion relief cylinder 10. The body 9 is provided with the mounting cavity 2. The explosion relief cylinder 10 is installed on the body 9 and is used to form the explosion relief channel 4. The explosion relief port 3 is provided on the inner wall of the explosion relief cylinder 10 and communicates with the mounting cavity 2.

[0066] The main body 9 includes a rectangular frame and walls enclosing the frame. An installation cavity 2 is formed inside the main body 9. This installation cavity 2 is sealed relative to the outside of the cabinet 1. This sealing is not a complete airtightness, but rather refers to meeting certain requirements for isolation from the outside environment. The installation cavity 2 can also be formed by several walls that are fixed inside the cabinet 1. In practical applications, the cabinet 1 is the cabinet 1 of an electrical cabinet. The installation cavity 2 inside the cabinet 1 is used to install electrical components 11, therefore, the installation cavity 2 has certain protection requirements. For example, the protection level requirement for the installation cavity 2 can be IP65, meaning it is waterproof and dustproof.

[0067] Reference Figures 3 to 5 The diagram illustrates the structure of the aforementioned explosion relief cylinder 10. The explosion relief cylinder 10 is hollow inside and has an opening at its rear end, forming an explosion relief channel 4 and an outlet end 7 of the explosion relief channel 4. The explosion relief port 3 is located on the side of the explosion relief cylinder 10. Taking the explosion relief cylinder 10 located on the right side of the cabinet 1 as an example, its explosion relief port 3 is located on its left side. It is easy to understand that the explosion relief port 3 needs to face the inside of the main body 9 because the mounting cavity 2 is located inside the main body 9. In this embodiment, the explosion relief cylinder 10 itself constitutes part of the wall enclosing the mounting cavity 2; therefore, the explosion relief port 3 is directly opened on the cylinder wall of the explosion relief cylinder 10, thus establishing a communication relationship with the mounting cavity 2.

[0068] Reference Figure 4 The position of the explosion vent 3 on the explosion vent cylinder 10, with a certain distance between it and the outlet end 7 of the explosion vent cylinder 10, forms the aforementioned protective section 8 within the explosion vent channel 4. Furthermore, since the explosion vent 3 is located on the side wall of the explosion vent cylinder 10, while the outlet end 7 is located at the end of the explosion vent cylinder 10, there is essentially a 90° bend between the explosion vent 3 and the outlet end 7. This not only allows the size of the explosion vent 3 to be unrestricted by the size of the end of the explosion vent cylinder 10, but also further enhances the barrier effect of the explosion vent channel 4 on the explosion vent 3 and the outside environment, thereby further reducing rainwater and dust entering the explosion vent 3 after it is opened.

[0069] The cabinet also includes several electrical components 11, some of which are located outside the mounting cavity 2 and some are installed inside the mounting cavity 2; the explosion vent 4 extends into the mounting cavity 2 so that the explosion vent 3 is close to the electrical components 11 in the sealed chamber. Specifically, refer to Figure 3The explosion relief cylinder 10 is a long, rectangular cylindrical component with a certain length in the front-to-back direction of the cabinet 1. This allows the explosion relief cylinder 10 to be installed and fixed to the main body 9 by plugging it in. When the explosion relief cylinder 10 is inserted into the main body 9, its explosion relief port 3 enters the inner part of the main body 9, making the explosion relief port 3 closer to the electrical component 11 in the mounting cavity 2. Since the increase in pressure inside the cabinet is usually caused by abnormal thermal runaway of the electrical component 11, leading to an increase in the internal temperature of the cabinet, bringing the explosion relief port 3 closer to the electrical component 11 also brings the explosion relief port 3 closer to the heat source inside the cabinet. The explosion relief device 5 can sense the increased pressure more quickly and can rapidly discharge the internal pressure of the cabinet, thereby further reducing the damage caused by the rapid increase in internal pressure to the components and cabinet 1 of the cabinet.

[0070] The electrical components 11 located within the mounting cavity 2 include explosive devices prone to thermal runaway and stable devices less prone to thermal runaway; the explosion vent 3 is located closer to the explosive devices than the stable devices. Specifically, the cabinet in this embodiment is a converter cabinet for implementing inverter and rectification functions. Power components are housed in its mounting cavity 2. These power components consist of multiple semiconductor switching transistors, which are prone to thermal runaway during use and are therefore explosive devices. Other components, such as transformers and capacitors, are relatively more stable and are therefore stable devices. (Refer to...) Figure 2 The stabilizing device is positioned closer to the front of cabinet 1, while the explosive device is positioned closer to the rear of cabinet 1, near the explosion vent 3. The explosion vent 3's proximity to the explosive device brings it closer to the heat source within the cabinet, further enhancing the speed at which the explosion venting device 5 detects abnormal pressure within the cabinet.

[0071] Meanwhile, the cabinet 1 includes at least one set of explosion relief units; each explosion relief unit includes two explosion relief cylinders 10, and the cabinet 1 is equipped with two explosion relief devices 5 corresponding to the two explosion relief cylinders 10; the two explosion relief cylinders 10 in each explosion relief unit are symmetrically arranged and located on both sides of the explosive device in the mounting cavity 2; in each explosion relief unit, the explosion relief ports 3 on the two explosion relief cylinders 10 are arranged facing each other. In this embodiment, the cabinet 1 is provided with one set of explosion relief units, so it includes a total of two explosion relief cylinders 10 arranged opposite each other. These two explosion relief cylinders 10 are located on the left and right sides of the cabinet 1, and the positions of their explosion relief ports 3 are arranged opposite each other, so that the two explosion relief cylinders 10 sandwich the explosive device in the mounting cavity 2 in the middle, and both sides of the explosive device can be relatively close to the explosion relief ports 3, which is beneficial to improve the sensing speed of the explosion relief device 5 to the abnormal pressure in the cabinet, and can further improve the explosion relief effect.

[0072] Furthermore, the main body 9 is provided with a heat dissipation duct 12 for dissipating heat from at least a portion of the electrical components 11 located outside the mounting cavity 2; the explosion relief cylinder 10 is provided with a ventilation opening 13 connecting the heat dissipation duct 12 and the explosion relief channel 4. Specifically, refer to... Figures 3 to 5 In this embodiment, the explosion relief cylinder 10 not only serves to form the explosion relief channel 4 and provide the explosion relief port 3, but also functions as a heat dissipation duct 12 for heat dissipation and ventilation. Specifically, refer to... Figure 8 In this embodiment, the cabinet houses a reactor 20, which generates significant heat during operation, necessitating active cooling. The cabinet includes a cavity for accommodating the reactor 20, with an air inlet 21 at its bottom. Due to the distance between the cabinet's bottom wall and the ground, cool air can enter the cavity through the air inlet 21. Openings are located on the top left and right sides of the cavity, connecting to the ventilation openings 13 of the two explosion relief cylinders 10. A fan 18 is installed at each ventilation opening 13 of the explosion relief cylinder 10, actively guiding airflow from the cavity into the explosion relief channel 4 of the explosion relief cylinder 10, and then delivering it to the outlet 7 of the explosion relief channel 4.

[0073] At the same time, refer to Figure 7 The cabinet body 1 also includes waterproof louvers 14, and each of the explosion relief cylinders 10 is equipped with one waterproof louver 14 to cover the outlet end 7 of the explosion relief channel 4. In this embodiment, there are two waterproof louvers 14, which are respectively installed at the outlet ends 7 of the two explosion relief cylinders 10, which can further reduce the amount of rainwater entering the explosion relief port 3.

[0074] Reference Figures 4 to 6 The explosion relief device 5 includes an explosion relief component 6 and a fixing strip 15 for fixing the explosion relief component 6. The fixing strip 15 is fixed to the cabinet 1 and located around the explosion relief port 3, and an installation gap is formed between it and the cabinet 1; the explosion relief component 6 is inserted into the installation gap and limited by the fixing strip 15 and the cabinet 1, and it is configured to detach from the installation gap by deformation after being subjected to internal pressure of the cabinet 1.

[0075] Specifically, the explosion venting component 6 is a plate-shaped member, roughly square in shape, and made of a material with a certain degree of elasticity, such as PVC. Due to the inherent elasticity of the explosion venting component 6, it deforms upon impact, thereby detaching itself from the fixing strip 15. (Refer to...) Figure 2 A limiting rib 19 is provided inside the explosion vent 3. The limiting rib 19 is distributed in a cross shape to prevent the explosion vent 6 from falling into the installation cavity 2.

[0076] The fixing strip 15 includes a fixing part 23 for connecting to the explosion relief cylinder 10, and a clamping part 24 for forming an installation gap with the cylinder wall of the explosion relief cylinder 10. The fixing part 23 and the clamping part 24 have a stepped structure, allowing the clamping part 24 to maintain a certain distance from the cylinder wall of the explosion relief cylinder 10. When installing the explosion relief component 6, the fixing strip 15 should first be installed around the explosion relief port 3 according to the shape of the explosion relief component 6, then the explosion relief component 6 should be deformed by applying force, and then the edge of the explosion relief component 6 should be inserted into the installation gap. It should be noted that the width of the clamping part 24 of the fixing strip 15 should not be too large, that is, the depth to which the edge of the explosion relief component 6 is inserted into the installation gap should not be too deep. Excessive depth will make it difficult for the explosion relief component 6 to detach from the fixing strip 15, resulting in failure of the explosion relief function.

[0077] Furthermore, the explosion relief device 5 also includes a buffer member 16 located between the fixing strip 15 and the explosion relief component 6; the buffer member 16 is configured to be compressed by the fixing strip 15 and the explosion relief component 6 to provide a preload force to the explosion relief component 6. The fixing strip 15 has at least one notch 17 along its length, and the fixing strip 15 does not contact the buffer member 16 at the notch 17 position, thereby adjusting the preload force provided by the buffer member 16 to the explosion relief component 6. The buffer member 16 provides a preload force to the explosion relief component 6, which under normal circumstances allows the explosion relief component 6 to be more securely mounted on the explosion relief cylinder 10, while not hindering the detachment of the explosion relief component 6 from the cabinet 1 when the internal pressure increases sharply.

[0078] Specifically, refer to Figure 6 The buffer 16 is disposed between the clamping portion 24 of the fixing strip 15 and the explosion vent 6. It can be made of an elastic material, such as foam or adhesive strip. In this embodiment, foam is used. When it is disposed between the fixing strip 15 and the explosion vent 6, the buffer 16 is deformed by the compression of the fixing strip 15 and the explosion vent 6, and then, in turn, exerts force on the explosion vent 6, creating static pressure between the buffer 16 and the explosion vent 6. When the explosion vent 6 is not impacted, it is fixed in place. Simultaneously, since the explosion vent 6 detaches from the fixing strip 15 when impacted, its edge pulls away from the fixing strip 15, the buffer 16 generates friction on the explosion vent 6. The magnitude of this friction determines the magnitude of the impact that will cause the explosion vent 6 to detach from the fixing strip 15.

[0079] In practical use, the thickness of the buffer 16 is difficult to control precisely, or the thickness of the buffer 16 often has specific specifications. This makes it difficult to adjust the friction force between the buffer 16 and the explosion relief component 6 by adjusting the buffer 16. Therefore, in this embodiment, a notch 17 is provided on the clamping part 24 of the fixing strip 15. Since the buffer 16 generates friction force with the explosion relief component 6 due to the pressure of the fixing strip 15, this embodiment provides a notch 17 of a certain length so that the fixing strip 15 and the buffer 16 do not contact each other at the notch 17 position. When the fixing strip 15 does not contact the buffer 16, it will not exert pressure on the buffer 16. Therefore, the friction force between the buffer 16 and the explosion relief component 6 at the notch 17 position is reduced compared to other positions. By adjusting the length and width of the notch 17, the overall contact area between the fixing strip 15 and the buffer 16 can be adjusted, and the friction force generated by the buffer 16 on the explosion relief component 6 can be adjusted, thereby allowing for precise adjustment of the explosion relief threshold.

[0080] The cabinet with explosion venting function provided in this embodiment improves the problem of rainwater and dust entering the installation cavity 2 through the explosion venting port 3 when the explosion venting port 3 is opened. This is achieved by setting the explosion venting port 3 inside the explosion venting channel 4, so that the explosion venting channel 4 can prevent foreign objects from reaching the explosion venting port 3 under the action of gravity.

[0081] Example 2

[0082] Reference Figure 9 The difference between Example 2 and Example 1 is that the outlet end 7 of the explosion relief channel 4 is located on the bottom wall of the cabinet 1.

[0083] Specifically, this can be viewed as changing the installation of the explosion relief cylinder 10 in Embodiment 1 from a horizontal direction to a vertical direction, that is, the explosion relief cylinder 10 is inserted into the body 9 from bottom to top, and the explosion relief port 3 on the explosion relief cylinder 10 is connected to the mounting cavity 2. At this time, the outlet end 7 of the explosion relief port 3 is located on the bottom wall of the cabinet 1, and the depressurized gas can be discharged from the bottom of the cabinet 1.

[0084] Example 3

[0085] Reference Figure 10 The difference between Embodiment 3 and Embodiment 1 is that the explosion vent 4 is located at the bottom of the cabinet 1. The explosion vent 4 is defined by the bottom wall of the cabinet 1 and the support legs 22 of the cabinet 1, and the explosion vent 3 faces downward and is located on the bottom wall of the cabinet 1.

[0086] Specifically, the support legs 22 of cabinet 1 lift the entire cabinet 1 upwards, creating a large gap between the bottom wall of cabinet 1 and the ground. This gap allows air to pass through, and its thickness is limited by the height of the support legs 22. The explosion vent 4 can be considered as being formed between the bottom wall of cabinet 1 and the ground, with the outlet 7 of the explosion vent 4 located at the edge of the bottom wall of cabinet 1. Through the explosion vent 4, the explosion vent 3 can quickly discharge the depressurized gas without affecting the operation of the explosion vent 6. Furthermore, because the opening of the explosion vent 3 faces and is located inside the explosion vent 4, and is situated at the bottom of cabinet 1, rainwater and dust are less likely to enter the explosion vent 3.

[0087] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this invention, but does not constitute a limitation on the scope of protection of this invention. Modifications, equivalent substitutions, or other improvements to the embodiments of this invention or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this invention or the foregoing embodiments, in conjunction with common knowledge, general technical knowledge, and / or existing technology, should all be included within the scope of protection of this invention.

Claims

1. A cabinet with a safe explosion venting function, characterized in that it comprises: a cabinet body (1) provided with a closed installation cavity (2), an explosion vent (3) communicating between the inside and outside of the installation cavity (2), and an explosion venting channel (4) communicating with the explosion vent (3); the explosion vent (3) is located inside the explosion venting channel (4); an explosion venting device (5) comprising an explosion venting element (6) adapted to shield the explosion vent (3), and the explosion venting device (5) is adapted to be acted on by the internal pressure of the cabinet body (1) to make the explosion venting element (6) act relative to the cabinet body (1) to open the explosion vent (3); the explosion venting channel (4) is adapted to provide space for the explosion venting element (6) to act relative to the cabinet body (1). The outlet end (7) of the explosion venting channel (4) and the explosion vent (3) form a protection section (8) with a preset length, and the protection section (8) forms a separation between the explosion vent (3) and the outermost surface of the cabinet body (1) to prevent foreign matter from reaching the explosion vent (3) under the action of gravity. The explosion venting channel (4) is arranged at the bottom and / or side of the cabinet body (1), and the explosion vent (3) is arranged inside the explosion venting channel (4). The explosion venting channel (4) is defined by the bottom wall of the cabinet body (1) and the support leg (22) of the cabinet body (1), and the explosion vent (3) is opened downward and arranged on the bottom wall of the cabinet body (1). The explosion venting channel (4) is arranged inside the cabinet body (1) and its outlet end (7) is arranged on the bottom wall or side wall of the cabinet body (1). The cabinet body (1) comprises a body (9) and an explosion venting cylinder (10); the body (9) is provided with the installation cavity (2); the explosion venting cylinder (10) is arranged on the body (9) and used to form the explosion venting channel (4); the explosion vent (3) is arranged on the inner cylinder wall of the explosion venting cylinder (10) and communicates with the installation cavity (2). Further comprising a plurality of electrical elements (11), part of the electrical elements (11) are arranged in the installation cavity (2); the explosion venting channel (4) extends into the installation cavity (2) to make the explosion vent (3) close to the electrical elements (11) in the closed cavity. The electrical elements (11) located in the installation cavity (2) include explosive devices prone to thermal runaway and stable devices not prone to thermal runaway; the explosion vent (3) is closer to the explosive devices than to the stable devices. The cabinet body (1) comprises at least one set of explosion venting units; each explosion venting unit comprises two explosion venting cylinders (10), and the cabinet body (1) is provided with two explosion venting devices (5) corresponding to the two explosion venting cylinders (10); the two explosion venting cylinders (10) in each explosion venting unit are symmetrically arranged and located on both sides of the explosive devices in the installation cavity (2); the explosion vents (3) on the two explosion venting cylinders (10) in each explosion venting unit are arranged opposite to each other. ​ ​ ​ 2. The cabinet with a safe explosion relief function according to claim 1, characterized in that, ​ 3. The cabinet with a safe explosion relief function according to claim 2, characterized in that, ​ 4. The cabinet with a safe explosion relief function according to claim 3, characterized in that, ​ 5. The cabinet with a safe explosion relief function according to claim 3, characterized in that, ​ 6. A cabinet with a safe explosion relief function as claimed in claim 5, characterized in that ​ 7. A cabinet with a safe explosion relief function as claimed in claim 6, characterized in that ​ ​ 8. A cabinet with a safe explosion relief function as claimed in claim 7, characterized in that ​ ​ 9. The cabinet with a safe explosion relief function according to claim 8, characterized in that, ​ 10. The cabinet with a safe explosion relief function according to claim 5, characterized in that, The body (9) is provided with a heat dissipation air duct (12) for dissipating heat for at least part of the electrical elements (11) located outside the installation cavity (2); the explosion venting cylinder (10) is provided with a ventilation opening (13) communicating the heat dissipation air duct (12) and the explosion venting channel (4).

11. The cabinet with a safe explosion relief function according to claim 5, characterized in that, The cabinet body (1) further comprises waterproof louvers (14), each of the explosion venting cylinders (10) is provided with one of the waterproof louvers (14) to cover the outlet end (7) of the explosion venting channel (4).

12. A cabinet with a safe explosion relief function according to any one of claims 1-11, characterized in that, The explosion venting device (5) further comprises a fixing batten (15) for fixing the explosion venting member (6); the fixing batten (15) is fixed to the cabinet body (1) and located around the explosion vent (3), and forms an installation gap with the cabinet body (1); the explosion venting member (6) is inserted into the installation gap and limited by the fixing batten (15) and the cabinet body (1), and is configured to be adapted to be separated from the installation gap by deformation under the action of the internal pressure of the cabinet body (1).

13. The cabinet with a safe explosion relief function according to claim 12, characterized in that, The explosion venting device (5) further comprises a buffer member (16) located between the fixing batten (15) and the explosion venting member (6); the buffer member (16) is configured to be adapted to be compressed by the fixing batten (15) and the explosion venting member (6) to provide a pre-tightening force to the explosion venting member (6).

14. The cabinet with a safe explosion relief function according to claim 13, characterized in that, The fixing batten (15) is provided with at least one gap (17) along the length direction, the fixing batten (15) is not in contact with the buffer member (16) at the position of the gap (17), so as to adjust the pre-tightening force provided by the buffer member (16) to the explosion venting member (6). The fixing batten (15) is provided with at least one gap (17) along the length direction, the fixing batten (15) is not in contact with the buffer member (16) at the position of the gap (17), so as to adjust the pre-tightening force provided by the buffer member (16) to the explosion venting member (6).

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