Cabinet with efficient explosion venting function

Abstract

The invention discloses a cabinet with an efficient explosion venting function, and the cabinet comprises a cabinet body which is provided with a sealed installation cavity and an explosion venting port communicating the interior and exterior of the installation cavity, and an explosion venting device which comprises an explosion venting plate suitable for covering the explosion venting port and a fixing part used for fixing the explosion venting plate on the cabinet body; the explosion venting plate is configured to be suitable for partially or completely opening the explosion venting opening through deformation under the action of internal pressure of the cabinet body. The cabinet has relatively high explosion venting efficiency, so that explosion venting can be rapidly carried out, and the problems that in the prior art, due to the fact that the explosion venting efficiency is too low, electrical elements in the cabinet are damaged, weak positions of the cabinet burst, or a cabinet door of the cabinet is exploded are solved.

Description

Technical Field

[0001] This invention relates to the field of electrical cabinet technology, specifically to a cabinet with efficient explosion venting 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 in the aforementioned cabinets, explosion relief devices are installed on the cabinets, such as explosion relief valves installed on the outer wall of the cabinet. However, with the increasing power of electrical cabinets, the specifications of existing explosion relief valves cannot be fully adapted, resulting in low explosion relief efficiency and an inability to quickly relieve pressure. This can still cause damage to electrical components inside the cabinet, bursting at weak points in the cabinet, or the cabinet door bursting open. Summary of the Invention

[0004] The purpose of this invention is to overcome the aforementioned defects or problems in the prior art and provide a cabinet with a high-efficiency explosion venting function. This cabinet has a high explosion venting efficiency and can quickly vent explosions, thus improving the problems in the prior art where the explosion venting efficiency is too low, resulting in damage to internal electrical components, cracking of weak points in the cabinet, or the cabinet door bursting open.

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

[0006] Technical Solution 1: A cabinet with high-efficiency explosion venting function, comprising a cabinet body, a sealed mounting cavity, and an explosion vent connecting the inside and outside of the mounting cavity, and an explosion venting device, comprising an explosion venting plate adapted to cover the explosion vent and a fastener for fixing the explosion venting plate to the cabinet body; the explosion venting plate is configured to partially or completely open the explosion vent by deformation after being subjected to internal pressure of the cabinet body.

[0007] Technical Solution Two, based on Technical Solution One: The fixing component is a fixing strip; the fixing strip is fixed to the cabinet and located around the explosion vent, forming an installation gap between it and the cabinet; the explosion vent plate is inserted into the installation gap and limited by the fixing strip and the cabinet, the fixing strip fully compresses the periphery of the explosion vent plate, and the explosion vent plate is configured to deform and detach from the installation gap to fully open the explosion vent after being subjected to internal pressure from the cabinet. With this technical solution, the explosion vent plate is easy to disassemble and reassemble, can be reused, and provides good protection under normal operating conditions of the electrical cabinet, ensuring a high protection level inside the installation cavity.

[0008] Technical Solution Three, based on Technical Solution One: The fixing component is a fixing strip; the fixing strip is fixed to the cabinet and located around the explosion vent, forming an installation gap between it and the cabinet; the explosion vent plate is inserted into the installation gap and limited by the fixing strip and the cabinet; the fixing strip intermittently presses the periphery of the explosion vent plate; the explosion vent plate is configured to partially open the explosion vent at the unpressed portion or detach from the installation gap to fully open the explosion vent when subjected to internal pressure from the cabinet. With this technical solution, the explosion vent plate is easy to disassemble and reassemble, can be reused, and provides good protection under normal operating conditions of the electrical cabinet, ensuring a high protection level inside the installation cavity.

[0009] Technical solution four based on technical solution one: also includes electrical components, which include multiple explosive devices that are prone to thermal runaway installed in the mounting cavity, and the cross-sectional area of ​​the explosion vent after all the vents are opened is greater than the maximum cross-sectional area of ​​a single explosive device.

[0010] Technical solution five, based on technical solution one, also includes electrical components. The electrical components include multiple explosive devices that are prone to thermal runaway, which are installed in the mounting cavity. The cross-sectional area of ​​the explosion relief port after all the ports are opened is larger than the preset area, so as to relieve pressure on the mounting cavity when multiple explosive devices explode. The preset area is determined based on the explosion pressure of each explosive device and the volume of the mounting cavity.

[0011] Technical solution six based on technical solution one: The cabinet further includes an explosion vent channel communicating with the explosion vent; the explosion vent is located inside the explosion vent channel, and the explosion vent channel is adapted to prevent external foreign objects from reaching the explosion vent under the action of gravity; the explosion vent channel is adapted to provide space for the explosion vent to move relative to the cabinet.

[0012] Technical solution seven based on technical solution six: A protective section with 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 periphery to prevent external foreign objects from reaching the explosion relief port under the action of gravity.

[0013] Technical solution eight based on technical solution seven: 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 provided on the inner wall of the explosion relief cylinder and communicates with the mounting cavity.

[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 nine: 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] 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:

[0017] Technical Solution 1 provides a cabinet with high-efficiency explosion venting function, comprising a cabinet body and an explosion venting device. The cabinet body has an explosion vent connecting the inside and outside of the cabinet. An explosion venting plate in the explosion venting device can close the explosion vent, and when the internal pressure of the cabinet increases sharply to a preset threshold, the explosion venting plate moves relative to the cabinet body to open the explosion vent, allowing internal gas to escape through the explosion vent, reducing damage to internal components and the cabinet body. The explosion venting device using this technical solution does not require a dedicated explosion venting valve; instead, it replaces the explosion venting valve with a combination of the explosion vent and the explosion venting plate. The size and position of the explosion vent and the explosion venting plate can be arbitrarily adapted as needed, improving explosion venting efficiency while also possessing high adaptability.

[0018] In technical solution two, 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 plate is inserted into this installation gap, it can be limited and fully compressed by the fixing strip and the wall of the explosion venting cylinder, but it is not firmly locked. When the internal pressure of the cabinet increases sharply, the explosion venting plate can deform and dislodge from the installation gap, thereby opening the explosion vent. With this technical solution, the explosion venting plate is easy to install and remove, and can also be reused repeatedly.

[0019] In technical solution three, the fixing strip intermittently presses the perimeter of the explosion relief plate. When the internal pressure of the cabinet is low, the explosion relief plate can partially open the explosion vent at the unpressed area through its own deformation. When the internal pressure of the cabinet increases sharply, the explosion relief plate can detach from the installation gap through its own deformation, thereby fully opening the explosion vent. The explosion relief device using this technical solution allows for easy disassembly and reassembly of the explosion relief plate, and it can also be reused repeatedly.

[0020] In technical solution four, the cross-sectional area of ​​the explosion vent after it is fully opened is greater than the maximum cross-sectional area of ​​a single explosive device, thereby giving the explosion vent a larger outlet area than the explosion vent valve of the prior art, thus improving the explosion venting efficiency.

[0021] In technical solution five, to ensure explosion relief efficiency, the cross-sectional area of ​​the explosion relief port is a preset area. The preset area is determined based on the explosion pressure of each explosive device and the volume of the installation cavity. The area setting is very flexible, and this explosion relief device can be well adapted to the explosion relief requirements of different cabinets.

[0022] In technical solution six, the cabinet is equipped with an explosion vent channel connected to the explosion vent. The explosion vent is located inside the explosion vent channel, allowing the channel to prevent external foreign objects, such as rainwater or dust, from reaching the explosion vent under gravity. Because the explosion vent is blocked by the explosion vent channel, foreign objects have difficulty entering. Thus, even when the explosion vent device detonates, external rainwater and dust are unlikely to enter the cabinet. Simultaneously, the explosion vent channel also provides space for the explosion vent plate to move relative to the cabinet. When the explosion vent plate moves, it enters the explosion vent channel, which also serves to release high-pressure gas from inside the cabinet.

[0023] In technical solution seven, a protective section is formed between the outlet end of the explosion venting channel and the explosion vent. The protective section has a certain length, so that even if a small amount of rainwater and dust enters the outlet end of the explosion venting channel, the protective section will block the rainwater and dust from entering the explosion vent.

[0024] In technical solution eight, 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.

[0025] 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.

[0026] 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. Attached Figure Description

[0027] 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.

[0028] Figure 1 This is an overall schematic diagram of Embodiment 1 of the cabinet with high-efficiency explosion venting function provided by the present invention;

[0029] Figure 2 A schematic diagram of the structure of Embodiment 1 of the cabinet with high-efficiency explosion relief function provided by the present invention;

[0030] Figure 3 for Figure 2 Schematic diagram of the structure of the central venting explosion tube;

[0031] Figure 4 for Figure 2 Cross-sectional schematic diagram of the central venting explosion tube;

[0032] Figure 5 for Figure 2 A schematic diagram of the explosion of the centrally leaking detonator;

[0033] Figure 6 for Figure 5 Explosion diagram of the explosion venting device;

[0034] Figure 7 An external schematic diagram of Embodiment 1 of the cabinet with high-efficiency explosion venting function provided by the present invention;

[0035] Figure 8 A schematic diagram of the heat dissipation airflow of Embodiment 1 of the cabinet with high-efficiency explosion relief function provided by the present invention.

[0036] Explanation of key figure labels:

[0037] 1. Cabinet; 2. Mounting cavity; 3. Explosion vent; 4. Explosion venting channel; 5. Explosion venting device; 6. Explosion venting plate; 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

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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."

[0043] Example 1

[0044] Embodiment 1 of the present invention provides a cabinet with a high-efficiency explosion venting function, referring to... Figure 1 and Figure 2The cabinet mainly includes a cabinet body 1 and an explosion relief device 5. The cabinet body 1 has an explosion relief port 3 connecting the inside and outside of the cabinet. The explosion relief plate 6 in the explosion relief device 5 can block the explosion relief port 3. When the internal pressure of the cabinet body 1 increases rapidly to a preset threshold, the explosion relief plate 6 moves relative to the cabinet body 1 to open the explosion relief port 3, allowing internal gas to escape from the port 3, reducing damage to internal components and the cabinet body 1. The explosion relief device 5 using this technical solution does not require a dedicated explosion relief valve; instead, the combination of the explosion relief port 3 and the explosion relief plate 6 replaces the traditional explosion relief valve.

[0045] To ensure explosion venting efficiency, the cross-sectional area of ​​the explosion vent 3 is a preset area, determined based on the explosion pressure of each explosive device and the volume of the mounting cavity. This area setting is highly flexible, allowing the explosion venting device 5 to adapt well to the explosion venting requirements of different cabinets. In a preferred embodiment, the cross-sectional area of ​​the explosion vent 3 when fully open is greater than the maximum cross-sectional area of ​​a single explosive device, thus giving the explosion vent 3 a larger outlet area compared to existing explosion venting valves, thereby improving explosion venting efficiency.

[0046] Thus, in this embodiment, the size and position of the explosion vent 3 and the explosion vent plate 6 can be arbitrarily adapted as needed, which not only improves the explosion venting efficiency but also has high adaptability.

[0047] Reference Figures 4 to 6 The explosion relief device 5 includes an explosion relief plate 6 and a fixing strip 15 for fixing the explosion relief plate 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 plate 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.

[0048] Specifically, the explosion vent plate 6 is a plate-shaped component, roughly square in shape (in other embodiments it can also be circular, elliptical, or other polygonal), and it is made of a material with a certain degree of elasticity, such as PVC. Due to the elasticity of the explosion vent plate 6 itself, it deforms when impacted, thereby detaching itself from the fixing strip 15. (Refer to...) Figure 2 Limiting ribs 19 are provided inside the explosion vent 3. The limiting ribs 19 are distributed in a cross shape to prevent the explosion vent plate 6 from falling into the installation cavity 2.

[0049] 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 plate 6, the fixing strip 15 should first be installed around the explosion relief port 3 according to the shape of the explosion relief plate 6, then the explosion relief plate 6 should be deformed by applying force, and then the edge of the explosion relief plate 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 plate 6 is inserted into the installation gap should not be too deep. Excessive depth will make it difficult for the explosion relief plate 6 to detach from the fixing strip 15, resulting in failure of the explosion relief function.

[0050] Furthermore, the explosion relief device 5 also includes a buffer member 16 located between the fixing strip 15 and the explosion relief plate 6; the buffer member 16 is configured to be compressed by the fixing strip 15 and the explosion relief plate 6 to provide a preload force to the explosion relief plate 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 plate 6. The buffer member 16 provides a preload force to the explosion relief plate 6, which under normal circumstances allows the explosion relief plate 6 to be more securely mounted on the explosion relief cylinder 10, while not hindering the detachment of the explosion relief plate 6 from the cabinet 1 when the internal pressure increases sharply.

[0051] In this embodiment, the fixing strip 15 intermittently presses the periphery of the explosion relief plate 6. When the pressure inside the cabinet is low, the explosion relief plate 6 can partially open the explosion relief port 3 at the unpressed part through its own deformation. When the pressure inside the cabinet 1 increases dramatically, the explosion relief plate 6 can detach from the installation gap through its own deformation, thereby fully opening the explosion relief port 3.

[0052] Specifically, refer to Figure 6 The buffer 16 is disposed between the clamping portion 24 of the fixing strip 15 and the explosion relief plate 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 relief plate 6, the buffer 16 is deformed by the compression of the fixing strip 15 and the explosion relief plate 6, and then exerts force on the explosion relief plate 6 in turn, creating static pressure between the buffer 16 and the explosion relief plate 6. When the explosion relief plate 6 is not impacted, it is fixed in place. Simultaneously, since the explosion relief plate 6 detaches from the fixing strip 15 when impacted, its edge pulls away from the fixing strip 15. Therefore, the buffer 16 generates frictional force on the explosion relief plate 6. The magnitude of this frictional force determines the magnitude of the impact that will cause the explosion relief plate 6 to detach from the fixing strip 15.

[0053] 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 plate 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 with the explosion relief plate 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 plate 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 plate 6 can also be adjusted, thereby allowing for precise adjustment of the explosion relief threshold.

[0054] The cabinet with high-efficiency explosion venting provided in this embodiment, by placing the explosion vent 3 inside the explosion venting channel 4, allows the explosion venting channel 4 to prevent external foreign objects from reaching the explosion vent 3 under the action of gravity, thus improving the problem of rainwater and dust entering the mounting cavity 2 through the explosion vent 3 when it is opened.

[0055] 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 vent plate 6 adapted to block the explosion vent 3, and the explosion venting device 5 is adapted to be moved relative to the cabinet 1 by the internal pressure of the cabinet 1 to open the explosion vent 3. The explosion vent channel 4 is also adapted to provide space for the explosion vent plate 6 to move relative to the cabinet 1.

[0056] Based on the above structure, when the internal pressure of the cabinet 1 increases sharply to a preset threshold, the explosion relief plate 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.

[0057] Reference Figure 1The cabinet 1 is equipped with an explosion relief channel 4 that communicates with the explosion relief port 3. The explosion relief port 3 is located inside the explosion relief channel 4, which prevents foreign objects from reaching the explosion relief port 3 under the influence of gravity. These foreign objects can be rainwater or dust. Because the explosion relief port 3 is blocked by the explosion relief channel 4, it is difficult for foreign objects to enter the explosion relief port 3. Thus, even when the explosion relief device 5 explodes, rainwater and dust from the outside will not easily enter the interior of the cabinet 1. At the same time, the explosion relief channel 4 also provides space for the explosion relief plate 6 to move relative to the cabinet 1. When the explosion relief plate 6 moves, it will enter the explosion relief channel 4, and the explosion relief channel 4 will release the high-pressure gas inside the cabinet 1.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] Example 2

[0072] This embodiment does not include illustrations. The difference between embodiment 2 and embodiment 1 is that the fixed pressure strip 15 of the explosion relief device has no notch 17, and the explosion relief plate 6 is fully pressed by the fixed pressure strip. When the pressure inside the cabinet increases dramatically, the explosion relief plate can be dislodged from the installation gap through its own deformation, thereby fully opening the explosion relief port.

[0073] 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 high-efficiency explosion venting function, characterized in that it comprises: The cabinet (1) has a sealed mounting cavity (2) and an explosion vent (3) connecting the inside and outside of the mounting cavity (2). The explosion vent (5) includes an explosion vent plate (6) adapted to cover the explosion vent (3) and a fastener for fixing the explosion vent plate (6) to the cabinet (1). The explosion vent plate (6) is configured to partially or completely open the explosion vent (3) by deformation after being subjected to internal pressure of the cabinet (1).

2. The cabinet with high-efficiency explosion venting function as described in claim 1, characterized in that, The fixing element is a fixing strip (15); the fixing strip (15) is fixed to the cabinet (1) and located around the explosion vent (3), and an installation gap is formed between it and the cabinet (1); the explosion vent plate (6) is inserted into the installation gap and is limited by the fixing strip (15) and the cabinet (1), the fixing strip (15) fully presses the periphery of the explosion vent plate (6), and the explosion vent plate (6) is configured to be detached from the installation gap by deformation after being subjected to the internal pressure of the cabinet (1) to fully open the explosion vent.

3. The cabinet with high-efficiency explosion venting function as described in claim 1, characterized in that, The fixing element is a fixing strip (15); the fixing strip (15) is fixed to the cabinet (1) and located around the explosion vent (3), and an installation gap is formed between it and the cabinet (1); the explosion vent plate (6) is inserted into the installation gap and is limited by the fixing strip (15) and the cabinet (1), the fixing strip (15) intermittently presses the periphery of the explosion vent plate (6), and the explosion vent plate (6) is configured to be suitable for partially opening the explosion vent (3) at the unpressed part by deformation after being subjected to the internal pressure of the cabinet (1) or to detach from the installation gap to fully open the explosion vent (3).

4. The cabinet with high-efficiency explosion venting function as described in claim 1, characterized in that, It also includes electrical components (11), which include multiple explosive devices that are prone to thermal runaway installed in the mounting cavity (2), and the cross-sectional area of ​​the explosion vent (3) after all of them are opened is greater than the maximum cross-sectional area of ​​a single explosive device.

5. A cabinet with high-efficiency explosion venting function as described in claim 1, characterized in that, It also includes electrical components (11), which include multiple explosive devices that are prone to thermal runaway and are installed in the mounting cavity (2). The cross-sectional area of ​​the explosion relief port (3) after all of them are opened is larger than the preset area, so as to relieve the pressure of the mounting cavity (2) when multiple explosive devices explode. The preset area is determined based on the explosion pressure of each explosive device and the volume of the mounting cavity (2).

6. A cabinet with high-efficiency explosion venting function as described in claim 1, characterized in that, The cabinet (1) also includes an explosion vent channel (4) connected to 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 foreign objects from reaching the explosion vent (3) under the action of gravity; the explosion vent channel (4) is adapted to provide space for the explosion vent (6) to move relative to the cabinet (1).

7. A cabinet with high-efficiency explosion venting function as described in claim 6, characterized in that, The outlet end (7) of the explosion relief channel (4) and the explosion relief port (3) form a protective section (8) of a preset length. 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.

8. A cabinet with high-efficiency explosion venting function as described in claim 7, characterized in that, The 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).

9. A cabinet with high-efficiency explosion venting function as described in claim 8, characterized in that, 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.

10. A cabinet with high-efficiency explosion venting function as described in claim 9, characterized in that, The body (9) is provided with a heat dissipation duct (12) for dissipating heat from at least some of the electrical components (11) located outside the mounting cavity (2); the explosion relief cylinder (10) is provided with a vent (13) connecting the heat dissipation duct (12) and the explosion relief channel (4).

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