Fireproof sealing device for bottom of electrical cabinet

Abstract

The utility model relates to the field of electrical cabinet equipment, in particular to a fireproof sealing device for the bottom of an electrical cabinet, which comprises a fireproof base plate, the fireproof base plate is laid at the bottom of the electrical cabinet, gaps of the fireproof base plate are sealed through fireproof sealant, and a supporting device is arranged at the bottom of the fireproof base plate. The supporting device comprises a supporting plate, a fixing block and two stretching pieces, the fixing block is installed on the upper end face of the supporting plate, the stretching pieces are located on the two sides of the supporting plate respectively, the width of the stretching pieces can be adjusted, installation plates are arranged on the outer sides of the stretching pieces, and the installation plates are fixed to the inner side wall of the electrical cabinet. The fireproof sealing device for the bottom of the electrical cabinet overcomes the limitation of a traditional protective material, has the characteristics of convenience in construction, stable structure and high weather resistance and applicability, and effectively reduces the failure rate of the electrical cabinet.

Description

Technical Field

[0001] This utility model relates to the field of electrical cabinet equipment, specifically to a fireproof sealing device for the bottom of an electrical cabinet. Background Technology

[0002] Electrical cabinets are an indispensable key component in many fields such as power systems and industrial automation. The core electrical components stored inside, such as relays, circuit breakers, and measurement and control protection devices, control the current flow, monitor the power grid status, and ensure the accurate distribution and transmission of power. Therefore, they require a safe and stable operating environment. Fire and humid environments are the two major threats to the safe operation of electrical cabinets.

[0003] To address the aforementioned issues, current technologies typically involve applying protective materials to the bottom of electrical cabinets during installation for fire and moisture protection. Traditional protective coatings on the market include two-component castables, inorganic fire-retardant plaster, or fire-retardant putty. Two-component castables, used in conjunction with templates, offer good sealing but are difficult to model. Inorganic fire-retardant plaster, made from inorganic materials, offers environmental advantages and forms a relatively strong and smooth protective layer. However, its significant weight during modeling can easily cause the model structure to collapse and crack, severely impacting the molding effect and protective performance. Furthermore, while fire-retardant putty is convenient to apply, its poor weather resistance leads to performance degradation over long-term use. Moreover, all of these fire-retardant materials are semi-finished products, requiring on-site mixing with water according to a specific component ratio. The precision of this component ratio adjustment process is uncontrollable, and uneven mixing can affect the properties of the fire-retardant material.

[0004] Therefore, it is necessary to improve the existing fireproof sealing technology for the bottom of electrical cabinets and develop a sealing device for the bottom of electrical cabinets that has fireproof and moisture-proof functions, as well as strong stability, strong weather resistance and not easy to crack. Utility Model Content

[0005] To address the aforementioned problems, the main objective of this utility model is to provide a fireproof sealing device for the bottom of electrical cabinets, which overcomes the limitations of traditional protective materials and features convenient construction, stable structure, weather resistance, and strong applicability, effectively reducing the failure rate of electrical cabinets.

[0006] To achieve the above objectives, this utility model provides a fireproof sealing device for the bottom of an electrical cabinet, including a fireproof pad. The fireproof pad is laid on the bottom of the electrical cabinet, and the gaps in the fireproof pad are sealed with fireproof sealant. A support device is provided at the bottom of the fireproof pad. The support device includes a support plate, a fixing block, and two tension members. The fixing block is installed on the upper end face of the support plate, and the tension members are located on both sides of the support plate. The width of the tension members is adjustable, and an mounting plate is provided on the outer side of the tension members. The mounting plate is fixed to the inner wall of the electrical cabinet.

[0007] Furthermore, the bottom surface of the fireproof mat is provided with a slot, which engages with the fixing block. The slot includes a fixing plate and a clamping plate that is vertically installed on both sides of the fixing plate.

[0008] Furthermore, the tensioning component includes a groove block, a tensioning block, and several pressure springs, with the tensioning block engaging with the outside of the groove block.

[0009] Furthermore, the pressure spring is located between the groove block and the tension block, with one end of the pressure spring hinged to the bottom surface of the groove block and the other end hinged to the bottom surface of the tension block.

[0010] Furthermore, the inner side of the mounting plate is provided with a support side plate, which is used to support the tension block. The mounting plate is provided with several positioning holes, and positioning bolts are provided in the positioning holes.

[0011] Furthermore, the positioning holes are located above and below the support side plate, respectively. The positioning bolts in the positioning holes above the support side plate are used to fix the mounting plate to the tension block, and the positioning bolts in the positioning holes below the support side plate are used to fix the mounting plate to the inner wall of the electrical cabinet.

[0012] Furthermore, the fireproof mat is a multi-layered structure formed by layering and casting polyurethane polymer.

[0013] Furthermore, fire-retardant sealants are mixtures of hot water-based copolymer emulsions and compounded flame retardants.

[0014] The beneficial effects of this utility model through the above technical solution include:

[0015] (1) The fireproof sealing device for the bottom of the electrical cabinet of this utility model has a fireproof pad plate that is used in conjunction with fireproof sealant, which simplifies the construction process related to sealing the bottom of the electrical cabinet, reduces the skill requirements of the operators, and improves the accuracy and reliability of the construction. At the same time, the special structure of the fireproof pad plate improves the weather resistance compared with the existing fireproof structure. It is less affected by environmental factors and can maintain long-term fireproof effect.

[0016] (2) In addition, the support device under the fireproof mat of this utility model can improve the stability of the fireproof mat. Even if it is used for a long time or other equipment parts are placed there, there will be no risk of collapse or cracking due to long-term use. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a structural schematic diagram of the fireproof sealing device for the bottom of an electrical cabinet according to this utility model.

[0019] Figure 2 This is a front view of the fireproof sealing device for the bottom of an electrical cabinet according to this utility model.

[0020] Figure 3 This is a partial exploded view of the fireproof sealing device for the bottom of an electrical cabinet according to this utility model.

[0021] Explanation of reference numerals in the attached figures

[0022] 1. Fireproof pad; 11. Slot; 111. Fixing plate; 112. Clip plate; 2. Support plate; 3. Fixing block; 31. Baffle; 4. Tensioning component; 41. Groove block; 42. Tensioning block; 43. Pressure spring; 5. Mounting plate; 51. Support side plate; 52. Positioning bolt. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] like Figure 1 The diagram shows the structure of the fireproof sealing device for the bottom of an electrical cabinet according to this invention. The fireproof sealing device includes a fireproof pad 1, which is laid on the bottom of the electrical cabinet. The gaps in the fireproof pad 1 are sealed with fireproof sealant. The fireproof pad 1 is a multi-layered structure formed by a layered casting process using polyurethane polymer. This multi-layered structure ensures complete fireproof and moisture-proof sealing strength while maintaining lightweight properties. The high-density layer in the multi-layered structure, in addition to its fire-resistant expansion function, also has moisture-proof and waterproof characteristics. The product is soft and resilient, unaffected by the environment, and can be easily cut and squeezed according to actual working conditions, making construction convenient. Furthermore, the fireproof sealant is a mixture of hot water copolymer emulsion and compounded flame retardant, possessing numerous characteristics such as environmental friendliness, high expansion, fire resistance, strong adhesion, and good sealing performance.

[0025] The installation process for the fireproof sealing device at the bottom of the electrical cabinet in this embodiment is as follows: First, measure the size of the fireproof pad required inside the electrical cabinet. Before measurement, straighten out the cables and other penetrations inside the cabinet. If the wiring is messy, use cable ties to bundle it. Then, according to the size and penetration shape of the bottom plate inside the cabinet, use a utility knife to cut the fireproof pad, ensuring a clean cut. Next, lay the cut fireproof pad in the location inside the cabinet where fire protection is required, minimizing the seams as much as possible. Finally, paste masking tape about 5mm to the left and right of the center line of the gap (to prevent overflow when using fireproof sealant), and then fill the gap with fireproof sealant. After filling the gap, immediately remove the masking tape to complete the construction.

[0026] The sealing device completed through the above installation steps exhibits significantly improved fire resistance. Upon contact with fire, the fireproof pad 1 expands rapidly, and the carbonized layer can withstand direct high-temperature burning (>1300℃). The expanded carbon layer effectively blocks the spread of flames, providing excellent smoke and water tightness. It is halogen-free, environmentally friendly, and does not produce corrosion. Furthermore, it offers excellent moisture and condensation prevention. The fireproof sealant prevents external humid air from entering the cabinet, and its good adhesion ensures a reliable seal at the joints of cabinets made of different materials. Even under long-term humidity variations, it maintains its sealing effect, preventing moisture buildup inside the cabinet. Problems such as rusting of metal parts and short circuits in electrical equipment can be addressed. Simultaneously, a standardized fire-resistant partition system can be established, creating independent fire-resistant zones at the bottom of the electrical cabinet and around through-holes to prevent insect and rodent intrusion. In the event of a fire, the fire can be contained within the smallest fire-resistant unit, preventing the accident from spiraling out of control and reducing economic losses and negative social impacts. Furthermore, the sealing device in this embodiment also possesses long-term fire resistance. Utilizing high-performance fire-resistant materials, it forms a stable internal structure, providing long-term and effective fire safety protection for the electrical cabinet. The fire-resistant product remains stable in environments ranging from -25℃ to 80℃, exhibiting good weather resistance and no degradation in fire resistance performance.

[0027] like Figures 1-3As shown, in other embodiments of this utility model, a support device is also provided at the bottom of the fireproof mat 1. The support device includes a support plate 2, a fixing block 3, and two tension members 4. The fixing block 3 is installed on the upper end surface of the support plate 2, and the tension members 4 are located on both sides of the support plate 2. The width of the tension members 4 is adjustable, and an mounting plate 5 is provided on the outer side of the tension members 4. The mounting plate 5 is fixed to the inner side wall of the electrical cabinet. At the same time, a slot 11 is provided on the bottom surface of the fireproof mat 1. The slot 11 engages with the fixing block 3. The slot 11 is provided with a fixing plate 111 and a clamping plate 112 vertically installed on both sides of the fixing plate 111. The clamping plate 112 and the fixing plate 111 can be integrally formed. The upper end surface of the fixing plate 111 is fixedly connected to the back of the fireproof mat 1. The fixing block 3 can be slidably disposed between the two clamping plates 112. In other preferred embodiments, a baffle 31 is provided at the inner end of the fixing block 3. The baffle 31 can prevent the slot 11 from disengaging from the fixing block 3 in the direction of movement.

[0028] In addition, in this embodiment, the tension member 4 is provided with a groove block 41, a tension block 42 and a plurality of pressure springs 43. The groove block 41 and the tension block 42 are also provided with groove structures. The tension block 42 is fastened to the outside of the groove block 41, but the tension block 42 does not completely wrap and fasten the groove block 41. The pressure spring 43 is located between the groove block 41 and the tension block 42. One end of the pressure spring 43 is hinged to the bottom surface of the groove block 41 and the other end is hinged to the bottom surface of the tension block 42.

[0029] Please continue reading. Figure 2 As shown, in this embodiment, the inner side of the mounting plate 5 is provided with a support side plate 51, which is used to support the tension block 42. The mounting plate 5 is provided with several positioning holes (not shown in the figure), and positioning bolts 52 are provided in the positioning holes. The positioning holes are located above and below the support side plate 51 respectively. The positioning bolts 52 in the positioning holes above the support side plate 51 are used to fix the mounting plate 5 on the tension block 42, and the positioning bolts 52 in the positioning holes below the support side plate 51 are used to fix the mounting plate 5 on the inner side wall of the electrical cabinet.

[0030] In this embodiment, the fireproof sealing device for the bottom of the electrical cabinet is installed by first installing the fireproof pad 1 according to the construction steps of the previous embodiment, and then installing the support device. Specifically, the fixing block 3 of the support device can be slid into the slot 11 below the fireproof pad 1. As the fixing block 3 moves into the electrical cabinet, it continues until the baffle 31 on the inner side of the fixing block 3 abuts against the inner end of the slot 11. It should be noted that in the above operation and installation steps, the position of the fireproof pad 1 is fixed and it has been completely sealed. Next, adjust the position of the tension block 42. Since the overall width of the support device is greater than the width of the fireproof mat 1 when the pressure spring 43 is in its original state, the tension blocks 42 on both sides of the support device are tightly abutting against the inner wall of the electrical cabinet when the support device is slidably installed. At the same time, the pressure spring 43 is in a compressed state. When the position of the support device is adjusted to the appropriate position, that is, when the inner end of the slot 11 abuts against the baffle 31, the positioning bolt 52 under the support side plate 51 of the mounting plate 5 can be fixed to the side plate of the electrical cabinet, thus completing the installation of the support device. The support device under the fireproof mat 1 in this embodiment can improve the stability of the fireproof mat 1. Even if it is used for a long time or other equipment parts are placed there, there will be no risk of collapse or cracking.

[0031] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A fireproof sealing device for the bottom of an electrical cabinet, characterized in that, The device includes a fireproof pad (1), which is laid at the bottom of the electrical cabinet. The gaps in the fireproof pad (1) are sealed with fireproof sealant. The bottom of the fireproof pad (1) is provided with a support device, which includes a support plate (2), a fixing block (3) and two tension members (4). The fixing block (3) is installed on the upper surface of the support plate (2). The tension members (4) are located on both sides of the support plate (2). The width of the tension members (4) is adjustable. The outer side of the tension members (4) is provided with an installation plate (5), which is fixed on the inner wall of the electrical cabinet.

2. The fireproof sealing device for the bottom of an electrical cabinet according to claim 1, characterized in that, The bottom surface of the fireproof pad (1) is provided with a slot (11), which is engaged with the fixing block (3). The slot (11) includes a fixing plate (111) and a card plate (112) vertically installed on both sides of the fixing plate (111).

3. The fireproof sealing device for the bottom of an electrical cabinet according to claim 1, characterized in that, The tension member (4) includes a groove block (41), a tension block (42) and several pressure springs (43), wherein the tension block (42) is fastened to the outside of the groove block (41).

4. The fireproof sealing device for the bottom of an electrical cabinet according to claim 3, characterized in that, The pressure spring (43) is located between the groove block (41) and the tension block (42). One end of the pressure spring (43) is hinged to the bottom surface of the groove block (41), and the other end is hinged to the bottom surface of the tension block (42).

5. The fireproof sealing device for the bottom of an electrical cabinet according to claim 3, characterized in that, The inner side of the mounting plate (5) is provided with a support side plate (51), which is used to support the tension block (42). The mounting plate (5) is provided with a plurality of positioning holes, and positioning bolts (52) are provided in the positioning holes.

6. The fireproof sealing device for the bottom of an electrical cabinet according to claim 5, characterized in that, The positioning holes are located above and below the support side plate (51), respectively. The positioning bolt (52) in the positioning hole above the support side plate (51) is used to fix the mounting plate (5) on the tension block (42), and the positioning bolt (52) in the positioning hole below the support side plate (51) is used to fix the mounting plate (5) on the inner wall of the electrical cabinet.

7. The fireproof sealing device for the bottom of an electrical cabinet according to any one of claims 1 to 6, characterized in that, The fireproof mat (1) is a multi-layer structure formed by layering and casting of polyurethane polymer.

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