Electrical panel cable hole fireproof plugging device

Abstract

The utility model discloses an electrical panel cabinet cable hole fire prevention plugging device belongs to electrical equipment protection technical field, including fixed frame, lower fixed plate and upper fixed plate, the lower fixed plate is installed on the fixed frame, and with the fixed frame between form the channel of going through for cable going through, the upper fixed plate is cooperated on the lower fixed plate, and with fixed frame is connected to close the channel of going through completely, the lower fixed plate and the upper fixed plate contact surface all are equipped with at least one semicircular groove, the semicircular groove of upper fixed plate with the semicircular groove of lower fixed plate one to one correspondence forms circular hole, is used to accommodate the cable of matching specification and passes. The utility model provides an electrical panel cabinet cable hole fire prevention plugging device can effectively solve the problem of the lack of sealing, the cumbersome dismounting and the poor reusability in the existing plugging technology.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment protection technology, specifically to a fireproof sealing device for cable holes in electrical control panels. Background Technology

[0002] During the installation and operation of electrical equipment, electrical control panels, as important power distribution and control units, have a critical impact on the safe and stable operation of the equipment due to the way their internal cables are routed. Currently, cables in electrical control panels are typically routed through holes at the bottom of the panel, which is a common wiring method used in the industry.

[0003] However, after the cables are installed, gaps inevitably form between them because the cable's outer diameter and the hole size are difficult to match perfectly. These gaps have several negative impacts: firstly, they significantly weaken the fireproof isolation between the electrical control panel and the external environment. In the event of a fire, flames and high-temperature smoke can spread through these gaps, expanding the scope of the accident. Secondly, these gaps provide pathways for dust, moisture, and small animals to enter the control panel. Dust accumulation affects the heat dissipation performance of electrical components, moisture can cause components to become damp and corrode, and the intrusion of small animals can even cause serious malfunctions such as short circuits. This not only interferes with the normal operation of electrical equipment but also poses significant safety hazards, potentially leading to electric shocks, fires, and other accidents.

[0004] To address these issues, various sealing methods have been adopted in the industry, with fireproof boards and fireproof putty being the most widely used. However, these existing methods have significant drawbacks: First, the sealing performance is insufficient, especially when there are many cables or cables of varying specifications, making complete sealing difficult and failing to eliminate the risks associated with gaps. Second, disassembly and assembly are difficult; when cables need to be inspected, replaced, or added, removing the existing sealing materials often requires significant manpower and time, and may damage the cables or control panels. Third, the reuse rate is low; fireproof boards, fireproof putty, and other materials are usually damaged after removal, making them difficult to reuse, resulting in material waste and increased costs.

[0005] Furthermore, existing fireproof boards are mostly made of siliceous materials, mineral wool, and glass wool. These materials easily generate large amounts of dust and fiber debris during manual cutting and perforation. Long-term exposure to this dust and debris may cause respiratory illnesses, skin allergies, and other health problems for workers. At the same time, the indiscriminate disposal of these wastes pollutes the surrounding environment, which is inconsistent with the concept of green and environmentally friendly development.

[0006] In summary, current methods for sealing cable holes in electrical control panels have shortcomings in terms of safety, convenience, economy, and environmental friendliness. Designing an efficient, reliable, and easy-to-install cable hole sealing device is of great practical significance. It can not only improve the operational safety of electrical equipment but also reduce maintenance costs and minimize environmental impact. Utility Model Content

[0007] To address the problems existing in the prior art, this utility model provides a fireproof sealing device for cable holes in electrical control panels, aiming to solve the problems of insufficient sealing performance, cumbersome disassembly and assembly, and poor reusability in existing sealing technologies. To achieve the above objectives, this utility model provides the following technical solution: A fireproof sealing device for cable holes in an electrical control panel includes a fixed frame, a lower fixed plate, and an upper fixed plate. The lower fixed plate is installed on the fixed frame, forming an insertion channel for cables to pass through. The upper fixed plate is fitted onto the lower fixed plate and connected to the fixed frame to completely seal the insertion channel. The contact surfaces of the lower and upper fixed plates are each provided with at least one semi-circular groove. The semi-circular grooves of the upper fixed plate and the lower fixed plate correspond one-to-one to form circular holes for accommodating cables of matching specifications to pass through.

[0008] Furthermore, the number of semi-circular grooves is multiple and arranged in parallel.

[0009] Furthermore, the surface of the semi-circular groove is provided with heat dissipation material.

[0010] Furthermore, it also includes an inlet guide and an outlet guide; the inlet guide is installed at the inlet end of the lower fixed plate, and the outlet guide is installed at the outlet end of the lower fixed plate, for guiding cable bending.

[0011] Furthermore, both the introduction guide and the exit guide are arc-shaped structures.

[0012] Furthermore, the radius of curvature R of the lead-in guide and the lead-out guide is greater than or equal to 3D, where D is the cable diameter.

[0013] Furthermore, the inlet guide and the outlet guide are detachably connected to the lower fixing plate.

[0014] Furthermore, the fixed frame, lower fixed plate, upper fixed plate, lead-in guide, and lead-out guide are all made of fire-resistant materials.

[0015] Furthermore, the upper fixing plate and the lower fixing plate are fixed to the fixing frame by bolts.

[0016] The beneficial effects of this utility model are: 1. The sealing body of this utility model adopts two fireproof plates with multiple sets of semi-circular grooves. By clamping the cable from the top and bottom, it can form a tight fit with the cable surface and the inner wall of the hole. This structural design effectively eliminates the gap problem common in traditional sealing methods, reliably blocks the intrusion of dust, moisture and small animals, avoids the risk of electrical component failure or short circuit caused by foreign objects entering, and significantly enhances the fireproof isolation performance between the electrical cabinet and the outside world, reduces the possibility of fire spread, and improves the safety of equipment operation.

[0017] 2. The device provided by this utility model adopts a standardized modular structure and is fixed by bolt connection. The installation process does not require complicated tools or professional skills, and ordinary operators can quickly complete the assembly with the help of standard tools. When it is necessary to inspect, replace or add cables in the later stage, the device can be separated simply by removing the bolts, avoiding the damage to cables or cabinets caused by the removal of traditional fireproof boards, fireproof putty and other materials, which greatly shortens the maintenance time, reduces manpower input and significantly improves operation and maintenance efficiency.

[0018] 3. The device provided by this utility model has a simple structure, and each component has been precisely processed during the manufacturing process, eliminating the need for secondary cutting, drilling, or other processing operations during on-site installation. Furthermore, it is made of durable materials, maintaining structural integrity and performance stability during repeated assembly and disassembly, and can be repeatedly applied to different cable installation scenarios. This not only reduces material waste and lowers long-term maintenance material costs, but also avoids the environmental pollution caused by waste generated from the single-use nature of traditional sealing materials, aligning with the trend of green and environmentally friendly development.

[0019] 4. This utility model's device, by setting multiple sets of grooves of different specifications, allows for the selection of a matching groove for clamping based on the actual cable diameter, meeting the sealing requirements of various cable sizes. Simultaneously, its modular design can adapt to different sized panel openings, achieving reliable sealing in cable routing scenarios in industrial power distribution, building electrical systems, and other fields, demonstrating strong versatility and practicality. Attached Figure Description

[0020] Figure 1 This is a side sectional view of the present invention when the cable is inserted; Figure 2 This is a side sectional view of the present invention when the fireproof sealing strip is inserted; Figure 3 This is a top view of the present invention without the fixing plate attached; Figure 4 This is a top view of the present invention; Figure 5 A schematic diagram of the structure of the fixing frame provided by this utility model; Figure 6This is a structural schematic diagram of the lower fixing plate provided by this utility model, wherein... Figure 6 (a) is a top view of the lower fixed plate. Figure 6 (b) is the front view of the lower fixed plate; Figure 7 A schematic diagram of the structure for guiding the introduction of this utility model is provided, wherein Figure 7 (a) The main view for introducing guidance, Figure 7 (b) A top view to introduce guidance. Figure 7 (c) is the left view that introduces the guide; Figure 8 This is a schematic diagram of the lead-out guide provided by the present invention, wherein... Figure 8 (a) The main view leading to the guide. Figure 8 (b) A top view to guide the way. Figure 8 (c) Left view for guiding direction; Figure 9 This is a structural schematic diagram of the upper fixing plate provided by this utility model, wherein... Figure 9 (a) is the left view of the upper fixed plate. Figure 9 (b) is the front view of the upper fixed plate.

[0021] The attached diagram is labeled as follows: 1. Fixing frame; 2. Lower fixing plate; 3. Inlet guide; 4. Outlet guide; 5. Upper fixing plate; 6. Fireproof sealing strip; 7. Cable. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the present invention is not limited to the following embodiments.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are 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 a limitation of this utility model.

[0024] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0025] In the description of this utility model, "multiple" means two or more.

[0026] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0027] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0028] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," and "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] Example 1 See attached Figures 1-9 This embodiment provides a fireproof sealing device for cable holes in electrical control panels, including a fixed frame 1, a lower fixed plate 2, an inlet guide 3, an outlet guide 4, and an upper fixed plate 5.

[0030] Specifically, such as Figure 5 As shown, the fixed frame 1 has a hollowed-out area in the middle, which can be made of fireproof material. It is installed in the hole at the bottom of the electrical panel cabinet by bolts, and the fixed frame 1 fits tightly with the bottom of the electrical panel cabinet around its perimeter.

[0031] The lower fixing plate 2 can also be made of fire-resistant material, such as... Figure 6 As shown, the upper surface of the lower fixing plate 2 is provided with at least one semi-circular groove. Preferably, there are multiple semi-circular grooves arranged side by side. The dimensions of the multiple semi-circular grooves may be the same or not exactly the same, so as to accommodate cables 7 of different specifications with diameters ranging from 5 to 50 mm. The lower fixing plate 2 is installed on the fixing frame 1 and covers part of the hollow area of ​​the fixing frame 1, so that a remaining opening for the cable 7 to pass through is formed between the lower fixing plate 2 and the fixing frame 1.

[0032] The upper fixing plate 5 can be made of fire-resistant material, such as Figure 9 As shown, the lower surface of the upper fixing plate 5 has multiple parallel semi-circular grooves. These semi-circular grooves are the same number as those on the upper surface of the lower fixing plate 2, and their positions correspond one-to-one. After the upper fixing plate 5 and the lower fixing plate 2 are combined, they are installed on the fixing frame 1. The semi-circular grooves of the two are combined to form a circular hole, through which a cable 7 of the matching specification can pass, thereby achieving complete sealing of the hole.

[0033] The guide 3 can be made of fire-resistant material, such as Figure 7 As shown, its two sides are right angles, and one side is an outer arc shape with a radius of curvature R ≥ 3D, where D is the diameter of the cable 7 to be inserted. The guide 3 is installed at the inlet end of the lower fixing plate 2 to guide the cable 7 to bend into the semi-circular groove of the upper fixing plate 5 and the lower fixing plate 2, effectively reducing the bending stress of the cable 7.

[0034] Guide 4 can also be made of fire-resistant materials, such as Figure 8 As shown, its two sides are right angles, and one side is an inner arc shape with a radius of curvature R ≥ 3D, where D is the diameter of the cable 7 being installed. The lead-out guide 4 is installed at the lead-out end of the lower fixed plate 2 to guide the cable 7 to bend into the electrical cabinet, reducing bending damage to the cable 7 when entering the cabinet.

[0035] The working process of this fireproof sealing device for cable holes in electrical control panels is as follows: Bottom Installation Stage: First, fix the fixing frame 1 to the preset position at the bottom of the electrical panel cabinet using bolts. Tighten the bolts to the standard torque to ensure a stable connection between the fixing frame 1 and the bottom of the electrical panel cabinet, providing a reliable foundation for subsequent component installation. Next, fix the lower fixing plate 2 to the fixing frame 1 using bolts, tightening them to the standard torque. The lower fixing plate 2 covers part of the hollow area of ​​the fixing frame 1, creating a suitable cable 7 passage opening between the lower fixing plate 2 and the fixing frame 1. Then, install the inlet guide 3 and outlet guide 4 sequentially at the inlet and outlet ends of the lower fixing plate 2. Their arc structure guides the cable 7 to bend and enter the electrical panel cabinet, ensuring that the cable is not subjected to excessive stress during bending.

[0036] Cable routing stage: Lay the cables 7 one by one along the semi-circular grooves on the upper surface of the lower fixing plate 2, ensuring that each cable 7 is accurately placed in the corresponding semi-circular groove. For unused semi-circular grooves, use fireproof sealing strips 6 to seal them. The fireproof sealing strips 6 can be made of flame-retardant materials to ensure the airtightness of the device and prevent dust, moisture, etc. from entering the electrical cabinet through the unused semi-circular grooves.

[0037] During the sealing stage of the device: the upper fixing plate 5 is placed over the lower fixing plate 2, so that the semi-circular grooves on the lower surface of the upper fixing plate 5 correspond one-to-one with the semi-circular grooves on the upper surface of the lower fixing plate 2. Then, the upper fixing plate 5 is fixed to the fixing frame 1 and the lower fixing plate 2 with bolts, and tightened to the standard torque, connecting the upper fixing plate 5 to the fixing frame 1, thereby completely sealing the passage between the lower fixing plate 2 and the fixing frame 1, completing the installation and sealing of the entire device.

[0038] When it is necessary to lay an additional cable 7, simply remove the upper fixing plate 5, take out the fireproof sealing strip 6 in the corresponding empty position, lay the new cable 7 into the corresponding semi-circular groove, and then reinstall the fixing plate 5 and tighten the bolts. The operation is convenient and easy to maintain later.

[0039] During this process, the heat generated by the cable 7 during operation is dissipated due to the heat dissipation material covering the surface of the semi-circular groove, ensuring the normal operating environment of the cable 7. The heat dissipation material can be a graphene heat dissipation coating or an aluminum foil heat dissipation layer. Furthermore, the multiple semi-circular grooves of slightly different sizes arranged side-by-side can accommodate cables 7 of different diameters, improving the applicability of the device.

[0040] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

Claims

1. A fireproof sealing device for cable holes in electrical control panels, characterized in that: It includes a fixed frame (1), a lower fixed plate (2) and an upper fixed plate (5); the lower fixed plate (2) is installed on the fixed frame (1) and forms an insertion channel for the cable (7) to pass through between the fixed frame (1); the upper fixed plate (5) is fitted on the lower fixed plate (2) and connected to the fixed frame (1) to completely close the insertion channel; the contact surfaces of the lower fixed plate (2) and the upper fixed plate (5) are each provided with at least one semi-circular groove; the semi-circular groove of the upper fixed plate (5) and the semi-circular groove of the lower fixed plate (2) correspond one-to-one to form a circular hole for accommodating the cable (7) of matching specifications to pass through.

2. The fireproof sealing device for cable holes in electrical control panels according to claim 1, characterized in that: The number of semi-circular grooves is multiple and they are arranged in parallel.

3. The fireproof sealing device for cable holes in electrical control panels according to claim 1, characterized in that: The surface of the semi-circular groove is provided with heat dissipation material.

4. The fireproof sealing device for cable holes in electrical control panels according to claim 1, characterized in that: It also includes an inlet guide (3) and an outlet guide (4); the inlet guide (3) is installed at the inlet end of the lower fixing plate (2), and the outlet guide (4) is installed at the outlet end of the lower fixing plate (2) to realize the bending guidance of the cable (7).

5. A fireproof sealing device for cable holes in electrical control panels according to claim 4, characterized in that: Both the inlet guide (3) and the outlet guide (4) are arc-shaped structures.

6. A fireproof sealing device for cable holes in electrical control panels according to claim 5, characterized in that: The radius of curvature R of the lead-in guide (3) and the lead-out guide (4) is greater than or equal to 3D, where D is the diameter of the cable (7).

7. A fireproof sealing device for cable holes in electrical control panels according to claim 4, characterized in that: The lead-in guide (3) and the lead-out guide (4) are detachably connected to the lower fixing plate (2).

8. A fireproof sealing device for cable holes in electrical control panels according to claim 4, characterized in that: The fixed frame (1), lower fixed plate (2), upper fixed plate (5), lead-in guide (3) and lead-out guide (4) are all made of fireproof materials.

9. A fireproof sealing device for cable holes in electrical control panels according to claim 1, characterized in that: The upper fixing plate (5) and the lower fixing plate (2) are fixed to the fixing frame (1) by bolts.

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