Electrical cabinet

Abstract

The utility model discloses an electrical cabinet, relates to the technical field of electrical cabinets, and is used for solving the problem that the transportation cost of an existing electrical cabinet is increased due to the fact that the maximum boundary size of the existing electrical cabinet is large. The electrical cabinet provided by the utility model comprises a cabinet body which is internally provided with a mounting cavity and an opening communicated with the mounting cavity; the cabinet door is connected with the cabinet body so as to open or close the opening; the water absorption expansion part is connected with the cabinet body and located on the side, close to the top plate of the cabinet body, of the opening, the water absorption expansion part has a natural state and an expansion state, and the size of the water absorption expansion part in the natural state is smaller than that of the water absorption expansion part in the expansion state. In the transportation process of the electrical cabinet, the size of the water absorption expansion part is relatively small when the water absorption expansion part is in a natural state, so that it is guaranteed that the size of the electrical cabinet is small, and the transportation cost is reduced.

Description

Electrical cabinet Technical Field

[0001] This application relates to the technical field of electrical cabinets, specifically to an electrical cabinet. Background Technology

[0002] Electrical cabinets typically consist of a cabinet body and cabinet doors mounted on the cabinet body. Inside the cabinet are mounting cavities for installing various electrical components. To prevent rainwater from entering the mounting cavities and damaging the electrical components installed inside, existing cabinets are equipped with a water-retaining eave on the top, which keeps rainwater away from the electrical equipment inside the mounting cavities.

[0003] However, adding a water-retaining eave will increase the maximum boundary dimensions of the cabinet, meaning that this design will increase the volume of the electrical cabinet, thereby increasing the transportation cost of the electrical cabinet. Summary of the Invention

[0004] This application provides an electrical cabinet that can solve the problem of increased transportation costs caused by the large maximum boundary size of existing electrical cabinets.

[0005] To achieve the above objectives, the electrical cabinet provided in this application includes:

[0006] The cabinet has a mounting cavity inside and an opening communicating with the mounting cavity;

[0007] Cabinet doors are connected to the cabinet body to open or close openings;

[0008] The water-absorbing expansion component is connected to the cabinet and located on the side of the opening near the top panel of the cabinet. The water-absorbing expansion component has a natural state and an expanded state. The volume of the water-absorbing expansion component in the natural state is smaller than the volume of the water-absorbing expansion component in the expanded state.

[0009] In some embodiments of this application, the electrical cabinet further includes:

[0010] The water-blocking structure is connected to the cabinet and is located on the side of the top panel of the cabinet near the opening. The water-absorbing expansion component can drive the water-blocking structure to move when switching between the natural state and the expanded state.

[0011] In its natural state, there is a first distance between the water-blocking structure and the cabinet; in its expanded state, there is a second distance between the water-blocking structure and the cabinet; the first distance is less than the second distance.

[0012] In some embodiments of this application, the water-blocking structure includes a water-blocking plate with a connecting end and a movable end disposed opposite to each other. The connecting end is rotatably connected to the cabinet, and the water-absorbing expansion member can at least drive the movable end to move away from the cabinet.

[0013] In some embodiments of this application, the water-blocking structure further includes:

[0014] The mounting bracket has an installation space inside. One side of the mounting bracket is connected to the cabinet, and the other side has a clearance opening that communicates with the installation space. The water-absorbing expansion component is located in the installation space and is connected to the baffle plate through the clearance opening.

[0015] In some embodiments of this application, the water-blocking structure includes:

[0016] A water storage component is connected to a mounting frame. A water storage cavity is formed inside the water storage component. The water storage component has an inlet and an outlet that are both connected to the water storage cavity. The outlet passes through the mounting frame and is connected to the installation space.

[0017] In some embodiments of this application, the cabinet has a height direction, and a top plate and a bottom plate located on both sides of the mounting cavity in the height direction;

[0018] The water-absorbing expansion component extends along the height direction, and the end of the water-absorbing expansion component that is relatively close to the top plate is connected to the mounting bracket.

[0019] The water-blocking structure also includes:

[0020] The connecting rod has one end connected to the end of the water-absorbing expansion component that is furthest from the top plate, and the other end connected to the baffle plate.

[0021] In some embodiments of this application, the cabinet has a length direction that intersects with the height direction; the mounting bracket has a guide portion on at least one side of the length direction, and the guide portion extends along the height direction;

[0022] The water-blocking structure also includes:

[0023] The sliding component is located in the installation space and is fixedly connected to the water-absorbing expansion component. The sliding component and the guide part slide together in the height direction.

[0024] In some embodiments of this application, the mounting bracket includes an upper cover and a lower cover disposed opposite to each other along the height direction;

[0025] One end of the water-absorbing expansion component is connected to the upper cover, and the other end is connected to the sliding component;

[0026] The sliding member is a sliding column extending along the length direction, and the guide part is a guide groove opened on at least one side of the mounting frame in the length direction. The guide groove extends along the height direction, and the end of the sliding column slides into the guide groove.

[0027] In some embodiments of this application, the cabinet has a width direction, and the opening extends through the cabinet along the width direction;

[0028] The water-absorbing expansion member extends along the width direction and is configured to extend out of the installation space along the width direction after absorbing water to abut against the water-blocking structure.

[0029] In some embodiments of this application, the cabinet has a width direction, and the opening extends through the cabinet along the width direction;

[0030] The water-blocking structure includes:

[0031] The support component is connected to the cabinet at one end and protrudes out of the cabinet along its width at the other end.

[0032] A flexible waterproof fabric is placed over the support, and the two together form a receiving cavity;

[0033] The water-absorbing expansion component is located inside the receiving cavity.

[0034] In some embodiments of this application, the cabinet has a height direction, and a top plate and a bottom plate located on both sides of the mounting cavity in the height direction, and the height direction intersects with the width direction;

[0035] The flexible waterproof fabric has inlets and outlets that are both connected to the receiving cavity, with the inlets being further away from the bottom plate than the outlets.

[0036] In some embodiments of this application, the cabinet has a height direction, and a top plate and a bottom plate located on both sides of the mounting cavity in the height direction, and the height direction intersects with the width direction;

[0037] The water-absorbing expansion member has a first end and a second end that are disposed opposite to each other in the width direction. The first end is closer to the cabinet than the second end, and the dimension of the first end in the height direction is greater than the dimension of the second end in the height direction.

[0038] In some embodiments of this application, the cabinet has a height direction, and a top plate and a bottom plate located on both sides of the mounting cavity in the height direction;

[0039] When the water-absorbing expansion component is in the expanded state, the water-blocking structure is in the unfolded position;

[0040] When the water-blocking structure is in the unfolded position, it is tilted relative to the height direction.

[0041] In some embodiments of this application, the cabinet has a width direction, and the opening extends through the cabinet along the width direction;

[0042] When the water-absorbing expansion component is in its natural state, the water-blocking structure is in the contracted position;

[0043] When the water-absorbing expansion component is in the expanded state, the water-blocking structure is in the unfolded position;

[0044] The first distance is the distance in the width direction between the end of the water-blocking structure furthest from the cabinet when the water-blocking structure is in the retracted position and the cabinet.

[0045] The second distance is the distance in the width direction between the end of the water-blocking structure furthest from the cabinet when the water-blocking structure is in the unfolded position and the cabinet.

[0046] The above-mentioned technical solution of this application has at least the following beneficial effects:

[0047] This application utilizes the physical properties of water-absorbing and expanding components to achieve specific functions. Specifically, during transportation, the water-absorbing and expanding components can be kept in a natural, dry state, resulting in a relatively small volume and thus a relatively small maximum boundary dimension of the cabinet. This ensures a smaller electrical cabinet size, thereby reducing transportation costs. During use, the water-absorbing and expanding components absorb moisture and rapidly expand from their natural state to their expanded state, effectively preventing water from seeping into the interior of the electrical cabinet through gaps in the cabinet doors and openings. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 is a perspective view of an electrical cabinet provided in an embodiment of this application;

[0050] Figure 2 is a schematic diagram of the water-absorbing expansion component in the electrical cabinet of the embodiment shown in Figure 1 under its natural state;

[0051] Figure 3 is a structural schematic diagram of the water-absorbing expansion component in the electrical cabinet of the embodiment shown in Figure 1 in the expanded state;

[0052] Figure 4 is a perspective view of a water-blocking structure provided in another embodiment of this application;

[0053] Figure 5 is a cross-sectional view of a water-blocking structure provided in another embodiment of this application;

[0054] Figure 6 is a schematic diagram of the water-absorbing expansion member in the natural state of the water-blocking structure provided in another embodiment of this application;

[0055] Figure 7 is a schematic diagram of the water-absorbing expansion member in the expanded state in a water-blocking structure provided in another embodiment of this application;

[0056] Figure 8 is a structural schematic diagram of a water-blocking structure provided in another embodiment of this application;

[0057] Figure 9 is a perspective view of the water-absorbing expansion member in the water-blocking structure provided in another embodiment of this application in its natural state;

[0058] Figure 10 is a perspective view of the water-absorbing expansion member in the water-blocking structure provided in another embodiment of this application under a collision state.

[0059] Explanation of reference numerals in the attached figures:

[0060] 1-Cabinet body; 11-Mounting cavity; 12-Opening; 13-Top panel; 14-Bottom panel;

[0061] 2-Cabinet doors;

[0062] 3-Water-absorbing expansion component; 31-First end; 32-Second end;

[0063] 4-Water-blocking structure; 41-Water-blocking plate; 411-Connecting end; 412-Moving end; 42-Mounting bracket; 421-Installation space; 422-Avoidance opening; 423-Guide part; 424-Upper cover; 425-Lower cover; 43-Water storage component; 431-Water storage cavity; 432-Water inlet; 433-Water outlet; 44-Connecting rod; 45-Sliding component; 46-Support component; 47-Flexible waterproof cloth; 471-Receiving cavity; 472-Water inlet; 473-Drain outlet;

[0064] X1 - First distance; X2 - Second distance;

[0065] X - Width direction; Z - Height direction; Y - Length direction. Detailed Implementation

[0066] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0067] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0068] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0069] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0070] This application provides an electrical cabinet, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0071] Electrical cabinets typically include energy storage cabinets, power distribution cabinets, control cabinets, etc., which contain various electrical components.

[0072] Electrical cabinets typically consist of a cabinet body and cabinet doors mounted on the cabinet body. The cabinet body has mounting cavities for various electrical components and openings communicating with these mounting cavities. The cabinet doors are used to open or close these openings. To prevent rainwater from entering the mounting cavities, existing cabinet bodies have a water-retaining eave on the top, which keeps rainwater away from the electrical equipment inside the mounting cavities.

[0073] However, adding a water-retaining eave will increase the maximum boundary size of the cabinet. This is especially true for electrical cabinets that require sea transport. Adding a water-retaining eave will increase the maximum boundary size of the cabinet, which will increase the volume of the electrical cabinet and thus increase transportation costs.

[0074] Therefore, this application provides a novel electrical cabinet. The electrical cabinet includes a cabinet body, a cabinet door, and a water-absorbing expansion member. The cabinet body has a mounting cavity and an opening communicating with the mounting cavity. The cabinet door is connected to the cabinet body to open or close the opening. The water-absorbing expansion member is connected to the cabinet body and located on the side of the opening near the top plate of the cabinet body. The water-absorbing expansion member has a natural state and an expanded state, with the volume of the water-absorbing expansion member in its natural state being smaller than its volume in its expanded state.

[0075] The above method utilizes the physical properties of water-absorbing and expanding components to achieve specific functions. Specifically, during transportation, the water-absorbing and expanding components can be kept in their natural state (i.e., dry state), resulting in a relatively small volume and thus a relatively small maximum boundary dimension of the cabinet. This ensures a smaller electrical cabinet size, thereby reducing transportation costs. During use, the water-absorbing and expanding components absorb moisture and rapidly expand from their natural state to their expanded state.

[0076] In some embodiments of this application, as shown in Figures 1 to 3, the water-absorbing expansion member 3 can be directly used to form a water-blocking component. Specifically, the water-absorbing expansion member 3 extends along the width direction X after absorbing water to form a water-blocking component. In this embodiment, the structure of the water-blocking component is simple and easy to implement.

[0077] In some embodiments of this application, as shown in Figure 4, the water-blocking structure 4 is connected to the cabinet 1 and located on the side of the opening 12 near the top plate 13 of the cabinet 1. The water-absorbing expansion member 3 can drive the water-blocking structure 4 to move when switching between its natural state and its expanded state. Since the water-absorbing expansion member 3 does not require electric drive, it relies entirely on the physical characteristics of its material to achieve the position adjustment function of the water-blocking structure 4. In electrical cabinets, the introduction of electric drive may simultaneously introduce the risk of electrical failure, while the design of the water-absorbing expansion member 3 avoids these problems and improves the safety of the electrical cabinet.

[0078] In some other embodiments of this application, the water-blocking structure 4 includes a water-blocking plate 41, which has a connecting end 411 and a movable end 412 disposed opposite to each other. The connecting end 411 is rotatably connected to the cabinet 1, and the water-absorbing expansion member 3 can at least drive the movable end 412 to move away from the cabinet 1. In the natural state, there is a first distance X1 (see Figure 6) between the water-blocking structure 4 and the cabinet 1; in the expanded state, there is a second distance X2 (see Figure 7) between the water-blocking structure 4 and the cabinet 1. The first distance X1 is smaller than the second distance X2. Specifically, the connecting end 411 and the cabinet 1 are connected by rotation, so that the water-blocking plate 41 can rotate relative to the cabinet 1. When rotating, the water-blocking plate 41 has a large coverage area, which can effectively cover the opening 12 and prevent rainwater from entering the mounting cavity 11 through the opening 12. At the same time, in the natural state, the plate-shaped water-blocking plate 41 is close to the cabinet 1, occupies little space, and does not occupy additional space outside the cabinet.

[0079] It should be noted that after the water evaporates from the water-absorbing expansion component 3, it can return to its natural state. The baffle plate 41, under its own weight or the action of springs and damping, can restore its original position. To a certain extent, this can be understood as the water-absorbing expansion component 3 also driving the movable end 412 towards the cabinet 1. The water-absorbing expansion characteristic of the water-absorbing expansion component 3 allows it to automatically adjust the position of the baffle plate 41 according to the amount of water entering the system. If the water volume is small, the expansion of the water-absorbing expansion component 3 is limited, and the movable end 412 of the baffle plate 41 may only move slightly away from the cabinet 1. However, when the water volume is large, the water-absorbing expansion component 3 expands more, causing the movable end 412 to move significantly away from the cabinet 1.

[0080] Referring to Figures 4 and 5, the water-blocking structure 4 also includes a mounting bracket 42. The mounting bracket 42 has an installation space 421. One side of the mounting bracket 42 is connected to the cabinet 1, and the other side has a clearance opening 422 communicating with the installation space 421. The water-absorbing expansion member 3 is located within the installation space 421 and connected to the water-blocking plate 41 through the clearance opening 422. This application installs the water-absorbing expansion member 3 within the installation space 421 of the mounting bracket 42, preventing it from being directly exposed to the external environment. This protects the water-absorbing expansion member 3 from external dust, impurities, or mechanical damage, extending its service life. Furthermore, the mounting bracket 42 provides a fixed installation position for the water-absorbing expansion member 3, and the design of the clearance opening 422 ensures an effective connection between the water-absorbing expansion member 3 and the water-blocking plate 41, without interfering with the movement trajectory of the water-blocking plate 41. For example, during the process of the water-absorbing expansion component 3 absorbing water and expanding and driving the baffle plate 41 to move, the clearance opening 422 can avoid unnecessary obstruction to the connecting part, so that the connecting part can move smoothly relative to each other and ensure the normal operation of the baffle plate 41.

[0081] Furthermore, the mounting bracket 42 can be used as an independent module to easily install the water-absorbing expansion component 3 onto the cabinet 1, simplifying the assembly process of the water-blocking structure 4. The mounting bracket 42 is connected to the cabinet 1, providing a stable support structure for the water-blocking structure 4.

[0082] As shown in Figure 5, the water-blocking structure 4 also includes a water storage component 43, which is connected to the mounting frame 42. A water storage cavity 431 is formed within the water storage component 43, and inlets 432, all communicating with the water storage cavity 431, are provided on the water storage component 43. The water storage cavity 431 is connected to the installation space 421. The water storage component 43 receives external moisture through the inlets 432, stores it in the water storage cavity 431, and then transfers it to the installation space 421. The design of the water storage cavity 431 provides a buffer time for the water-absorbing expansion component 3, allowing it to gradually absorb moisture from the water storage cavity 431 and smoothly transition to the expansion state. The water storage cavity 431 of the water storage component 43 forms an independent rainwater channel, preventing rainwater from directly entering the installation space 421 and spreading disorderly. This makes the flow path of the rainwater more controllable, ensuring that the water-absorbing expansion component 3 can absorb moisture and expand as expected.

[0083] The cabinet 1 has a height direction Z, and a top plate 13 and a bottom plate 14 located on both sides of the mounting cavity 11 in the height direction Z. A water-absorbing expansion member 3 extends along the height direction Z, and the end of the water-absorbing expansion member 3 closest to the top plate 13 is connected to the mounting bracket 42. The water-blocking structure 4 also includes a connecting rod 44, one end of which is connected to the end of the water-absorbing expansion member 3 furthest from the top plate 13, and the other end is connected to the water-blocking structure 4.

[0084] In practical use, rainwater flows from top to bottom due to its own gravity. That is to say, the direction of rainwater entering is consistent with the extension direction of the water-absorbing expansion member 3. This means that when water immersion occurs, the water can directly act on the water-absorbing expansion member 3, allowing the water-absorbing expansion member 3 to absorb water and expand more quickly, thereby rapidly pushing the water-blocking structure 4 to move through the connecting rod 44.

[0085] In this embodiment, the water-blocking structure 4 further includes a sliding member 45, which is disposed within the installation space 421 and slides in cooperation with the mounting frame 42 along the height direction Z. The mounting frame 42 includes an upper cover 424 and a lower cover 425 disposed opposite to each other along the height direction Z. One end of the water-absorbing expansion member 3 is connected to the upper cover 424, and the other end is connected to the sliding member 45.

[0086] As can be understood, as shown in Figure 5, in order to connect the water storage cavity 431 with the installation space 421, the upper cover 424 of the mounting bracket 42 is provided with a water outlet 433. That is, liquid can enter the water storage component through the water inlet 432 and enter the installation cavity through the water outlet 433, where it is absorbed by the water absorption expansion component 3.

[0087] By using the above method, it can be ensured that the water-absorbing expansion component 3 moves linearly along the height direction Z, so that the expansion force of the water-absorbing expansion component 3 can be directly transmitted to the connecting rod 44 and the baffle plate 41 along the height direction Z, avoiding the problem of jamming or deviation caused by the unclear movement direction of the water-absorbing expansion component 3.

[0088] For example, the mounting bracket 42 has a guide portion 423 on at least one side in the length direction Y, and the guide portion 423 extends in the height direction Z. The sliding member 45 slides in conjunction with the guide portion 423 in the height direction Z. For instance, the sliding member 45 is a sliding post extending in the length direction Y, and the guide portion 423 is a guide groove formed on at least one side of the mounting bracket 42 in the length direction Y, the guide groove extending in the height direction Z, and the end of the sliding post slides in conjunction with the guide groove. The sliding post and guide groove provide precise linear guidance; the shape and size of the guide groove precisely limit the movement direction of the sliding post, ensuring that it can only move in the height direction Z. Furthermore, the structure of the sliding post and guide groove is relatively simple, requiring no complex parts or additional connecting devices. During installation, the sliding post only needs to be inserted into the guide groove to complete the initial installation, making the operation simple and convenient. Alternatively, in some embodiments, the sliding member 45 and guide portion 423 can also be a slide rail fit structure.

[0089] For example, the water storage component 43 is cylindrical and extends along the length direction Y. The top of the water storage component 43 has a water inlet 432, and the bottom of the water storage component 43 has a water outlet 433. A mounting bracket 42 is connected to the bottom of the water storage component 43, and the water outlet 433 passes through the mounting bracket 42 and communicates with the installation space 421. In some embodiments, there are multiple water inlets 432 and multiple water outlets 433, and they are arranged in a one-to-one correspondence. The multiple water inlets 432 and multiple water outlets 433 are evenly distributed along the length direction Y on the water storage component 43. In some embodiments, the mounting bracket 42 and the water storage component 43 are an integral structure.

[0090] In some embodiments of this application, referring to Figure 8, the cabinet 1 has a width direction X, and the opening 12 extends through the cabinet 1 along the width direction X. The water-absorbing expansion member 3 extends out of the installation space 421 along the width direction X after absorbing water to abut against the water-blocking structure 4. This linear movement of the water-absorbing expansion member 3 after absorbing water provides a simple structure. Furthermore, since the movement direction of the water-absorbing expansion member 3 is consistent with the width direction X, complex turning or offset designs are avoided. After extending along the width direction X, the water-absorbing expansion member 3 directly abuts against the water-blocking structure 4, enabling rapid transmission of expansion force and pushing the water-blocking plate 41 away from the cabinet 1.

[0091] In some embodiments of this application, as shown in Figures 9 and 10, the cabinet 1 has a width direction X, and the opening 12 extends through the cabinet 1 along the width direction X. The water-blocking structure 4 includes a support member 46 and a flexible waterproof cloth 47. One end of the support member 46 is connected to the cabinet 1, and the other end protrudes out of the cabinet 1 along the width direction X. The flexible waterproof cloth 47 covers the support member 46, and the two enclose each other to form a receiving cavity 471. A water-absorbing expansion member 3 is disposed in the receiving cavity 471. The support member 46 and the flexible waterproof cloth 47 enclose the receiving cavity 471 so that the water-absorbing expansion member 3 is wrapped in the receiving cavity 471. When the water-absorbing expansion member 3 expands, its expansion force can act evenly on the flexible waterproof cloth 47, expanding the flexible waterproof cloth 47 so that the farthest end of the flexible waterproof cloth 47 is away from the cabinet 1, thus forming a water-blocking eave. For example, the support member 46 is a support plate.

[0092] The cabinet 1 includes a top plate 13 and a bottom plate 14 respectively disposed on both sides of the mounting cavity 11 in the height direction Z. A water inlet 472 communicating with the receiving cavity 471 is provided on the flexible waterproof fabric 47. Thus, the design of the water inlet 472 allows rainwater to smoothly enter the receiving cavity 471, enabling the water-absorbing expansion member 3 to absorb water. For example, a drain outlet 473 communicating with the receiving cavity 471 is provided on the flexible waterproof fabric 47, and the water inlet 472 is further away from the bottom plate 14 than the drain outlet 473. This application places the water inlet 472 on the side of the flexible waterproof fabric 47 closer to the top plate 13, which can more effectively utilize the natural flow trend of water and improve water absorption efficiency. Furthermore, due to gravity, water is more likely to accumulate in the area near the bottom plate 14; therefore, this application places the drain outlet 473 on the side of the flexible waterproof fabric 47 closer to the bottom plate 14 to facilitate the drainage of excess rainwater in the receiving cavity 471 and prevent rainwater from accumulating in the receiving cavity 471.

[0093] The water-absorbing expansion member 3 has a first end 31 and a second end 32 disposed opposite to each other in the width direction X. The first end 31 is closer to the cabinet 1 than the second end 32, and the dimension of the first end 31 in the height direction Z is larger than the dimension of the second end 32 in the height direction Z. Specifically, the upper surface of the water-absorbing expansion member 3 near the top plate 13 is a slope, and gradually slopes downward in the direction away from the cabinet 1. Alternatively, the upper surface of the water-absorbing expansion member 3 near the top plate 13 is a stepped surface, and its height gradually decreases in the direction away from the cabinet 1.

[0094] Since the dimension of the first end 31 in the height direction Z is larger than that of the first end 31 in the height direction Z, that is, the height of the water-absorbing expansion member 3 in the height direction Z tends to decrease in the direction away from the cabinet 1, when the flexible waterproof cloth 47 is stretched open by it, the height of the flexible waterproof cloth 47 in the height direction Z also tends to decrease. As a result, under the action of gravity, rainwater will flow naturally downward along the flexible waterproof cloth 47, which helps to quickly and effectively guide rainwater and prevent rainwater from accumulating on the flexible waterproof cloth 47.

[0095] Based on any of the above embodiments, the cabinet 1 has a height direction Z, and a top plate 13 and a bottom plate 14 located on both sides of the mounting cavity 11 in the height direction Z. When the water-absorbing expansion member 3 is in the expanded state, the water-blocking structure 4 is in the unfolded position. When the water-blocking structure 4 is in the unfolded position, it is inclined downward relative to the height direction Z in a direction away from the cabinet 1. The inclined water-blocking structure 4 can guide rainwater. When water impacts the water-blocking structure 4, due to the inclined surface of the water-blocking structure 4, the rainwater will change direction along the inclined surface and flow away from the cabinet 1. This guiding effect can prevent rainwater from directly impacting the edge of the opening 12 of the cabinet 1 or other weak parts of the cabinet 1, reducing the risk of rainwater damage to the structure of the cabinet 1, and also further reducing the possibility of rainwater entering the interior of the cabinet 1.

[0096] Furthermore, in the event of rain or water impact, the inclined water-blocking structure 4 helps rainwater or accumulated water to drain away quickly. Due to gravity, the inclined surface allows water falling on the water-blocking structure 4 to slide off more quickly, reducing the time water remains on the water-blocking structure 4. This not only prevents excessive water accumulation from affecting the performance of the water-blocking structure 4 itself (such as increased weight causing deformation of the water-blocking structure 4 and affecting its water-blocking effect), but also prevents water from seeping into the cabinet 1 from the connection between the opening 12 and the cabinet door 2.

[0097] It should be noted that, in embodiments where the water-blocking component is directly formed by the water-absorbing expansion member 3, the water-absorbing expansion member 3 needs to be made of a material with a larger coefficient of expansion. However, in embodiments where the water-absorbing expansion member 3 drives the water-blocking structure 4 to move, the coefficient of expansion of the water-absorbing expansion member 3 is required to be low (i.e., it does not need to expand that much), so a material with a low coefficient of expansion can be used.

[0098] The water-absorbing and expanding component 3 is typically made of water-absorbing polymer materials. Examples include SAP (Super Absorbent Polymer) composite membranes, bentonite rubber composites, and silica nanomaterials. For instance, SAP composite membranes can expand 10–15 times, bentonite rubber composites can expand 2–3 times, and silica nanomaterials can expand 1.5–2 times.

[0099] To meet the requirements of extreme weather conditions, the material for the water-absorbing and expanding component 3 can preferably be a silica-based nanomaterial (temperature resistance -60~200℃). If a rapid response is required, an SAP composite film (reaching maximum expansion in 5 minutes) can be selected. For cost-sensitive applications, a bentonite rubber composite material (priced 40% lower than polymer materials) can be chosen. The water-absorbing and expanding component 3 allows the water-blocking structure 4 to automatically expand during rainy weather. After the water-absorbing and expanding component 3 dries naturally, the water-blocking structure 4 can automatically return to its original position, thus achieving the function of automatically protecting the electrical cabinet during rainy weather.

[0100] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. The above descriptions are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims. Furthermore, specific examples have been used in the specification to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this application, and the content of this specification should not be construed as a limitation of this application.

Claims

1. An electrical cabinet, characterized in that, include: The cabinet has a mounting cavity inside and an opening communicating with the mounting cavity; Cabinet doors, connected to the cabinet body, are used to open or close the opening; A water-absorbing and expanding component is connected to the cabinet body and located on the side of the opening near the top plate of the cabinet body. The water-absorbing and expanding component has a natural state and an expanded state. The volume of the water-absorbing and expanding component in the natural state is smaller than the volume of the water-absorbing and expanding component in the expanded state.

2. The electrical cabinet according to claim 1, characterized in that, Also includes: A water-blocking structure is connected to the cabinet and located on the side of the opening near the top plate of the cabinet. The water-absorbing expansion member can drive the water-blocking structure to move when switching between the natural state and the expanded state.

3. The electrical cabinet according to claim 2, characterized in that, The water-blocking structure includes a water-blocking plate, which has a connecting end and a movable end arranged opposite to each other. The connecting end is rotatably connected to the cabinet body, and the water-absorbing expansion member can at least drive the movable end to move away from the cabinet body. In the natural state, there is a first distance between the movable end and the cabinet body; in the expanded state, there is a second distance between the movable end and the cabinet body. The first distance is less than the second distance.

4. The electrical cabinet according to claim 3, characterized in that, The water-blocking structure further includes: a mounting frame, which has an installation space, one side of the mounting frame is connected to the cabinet, and the other side has a clearance opening that communicates with the installation space. The water-absorbing expansion member is located in the installation space and is connected to the water-blocking plate through the clearance opening.

5. The electrical cabinet according to claim 4, characterized in that, The water-blocking structure includes: a water storage component connected to the mounting frame, the water storage component having a water storage cavity, the water storage component having a water inlet communicating with the water storage cavity, and the water storage cavity communicating with the installation space.

6. The electrical cabinet according to claim 4, characterized in that, The cabinet has a height direction, and the cabinet is provided with a top plate and a bottom plate on both sides of the mounting cavity in the height direction; the water-absorbing expansion member extends along the height direction, and the end of the water-absorbing expansion member that is relatively close to the top plate is connected to the mounting frame; The water-blocking structure further includes a connecting rod, one end of which is connected to the end of the water-absorbing expansion member that is away from the top plate, and the other end of which is connected to the water-blocking plate.

7. The electrical cabinet according to claim 6, characterized in that, The water-blocking structure further includes: a sliding member disposed within the installation space and slidingly engaged with the mounting frame along the height direction; the mounting frame includes an upper cover and a lower cover disposed opposite to each other along the height direction, one end of the water-absorbing expansion member is connected to the upper cover, and the other end is connected to the sliding member.

8. The electrical cabinet according to claim 4, characterized in that, The cabinet has a width direction; after absorbing water, the water-absorbing expansion member extends out of the installation space along the width direction to abut against the water-blocking structure.

9. The electrical cabinet according to claim 2, characterized in that, The cabinet has a width direction; the water-blocking structure includes: a support member, one end of which is connected to the cabinet and the other end protruding out of the cabinet along the width direction; a flexible waterproof cloth, which is covered on the support member and the two together form a receiving cavity; and a water-absorbing expansion member is disposed in the receiving cavity.

10. The electrical cabinet according to claim 9, characterized in that, The cabinet has a height direction, and the cabinet includes a top plate and a bottom plate respectively disposed on both sides of the mounting cavity in the height direction, the height direction intersecting the width direction; the flexible waterproof cloth has a water inlet communicating with the receiving cavity.

11. The electrical cabinet according to claim 10, characterized in that, The water-absorbing expansion member has a first end and a second end disposed opposite to each other in the width direction, the first end being closer to the cabinet than the second end, and the dimension of the first end in the height direction being greater than the dimension of the second end in the height direction.

12. The electrical cabinet according to any one of claims 2 to 8, characterized in that, The cabinet has a height direction, and when the water-absorbing expansion member is in the expanded state, the water-blocking structure is in the unfolded position; when the water-blocking structure is in the unfolded position, it is tilted downward relative to the height direction in a direction away from the cabinet.

13. The electrical cabinet according to claim 1, characterized in that, The cabinet has a width direction; the water-absorbing expansion member expands along the width direction after absorbing water to form a water-blocking component.

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