Fireproof and heat-insulating groove box for mineral insulated cable

Abstract

The utility model relates to cable groove box technical field discloses a mineral insulated cable fireproof heat insulation groove box, including a plurality of mineral insulated cable groove box and connecting piece, two groove boxes through connecting piece cooperation bolt butt joint are connected together, the inboard fixed connection of groove box has fireproof heat insulation board no.

Description

Technical Field

[0001] This utility model belongs to the field of cable tray technology, specifically a fireproof and heat-insulating cable tray for mineral-insulated cables. Background Technology

[0002] Mineral insulated cables are a special type of cable with a copper sheath encasing a copper conductor core and magnesium oxide powder as an inorganic insulating material to isolate the conductor from the sheath. They have excellent fire resistance and high temperature resistance. In current wiring installations, mineral insulated cables are laid in cable trays, and fire-resistant and heat-insulating cables are used to protect them, thus providing fire protection and heat insulation for the cable lines.

[0003] In practical use, the applicant has found that existing fireproof and heat-insulating cable trays for mineral-insulated cables require connectors for assembly, with the connectors and cable trays connected by bolts. However, the existing cable tray structure lacks heat insulation mechanisms for the connecting bolts, which can lead to heat conduction from the bolts to the mineral-insulated cables in contact with them during a fire, causing damage to the cables. Furthermore, the cable trays have connection holes through which heat and flames can easily enter, and their fire resistance needs improvement. To address the aforementioned problems, a fireproof and heat-insulating cable tray for mineral-insulated cables is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a fireproof and heat-insulating cable tray for mineral-insulated cables in order to solve the problems mentioned above.

[0005] The technical solution adopted by this utility model is as follows: a fireproof and heat-insulating cable tray for mineral insulated cables, including a plurality of cable trays and connectors, two adjacent cable trays are connected together by bolts through the connectors, a fireproof and heat-insulating plate is fixedly connected to the inner side of the cable tray, and L-shaped strips are fixedly connected to both sides of the left and right inner walls of the cable tray, and C-shaped fireproof and heat-insulating components are snapped onto the L-shaped strips at the connection of two adjacent cable trays.

[0006] In a preferred embodiment, the connecting bolt between the connector and the slot is located inside the C-shaped fireproof and heat-insulating component.

[0007] In a preferred embodiment, the connector has a concave structure.

[0008] In a preferred embodiment, each of the slots is covered with a cover plate, and the cover plate is locked onto the slot by a snap fastener, and a fireproof and heat-insulating plate is fixedly connected to the inner side of the cover plate.

[0009] In a preferred embodiment, the fireproof and heat-insulating board one and the fireproof and heat-insulating board two are made of the same material, both being composite boards composed of fireproof cotton and inorganic fire-resistant board.

[0010] In a preferred embodiment, the C-type fireproof and heat-insulating component is a composite board made of fireproof cotton and inorganic fire-resistant board.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0012] 1. In this utility model, a C-shaped fireproof and heat-insulating component is inserted into an L-shaped strip at the connection between two adjacent slot boxes, thereby covering the connecting bolts between the connector and the slot box, thus isolating the connecting bolts from the mineral-insulated cable and preventing heat transfer from the connecting bolts from damaging the mineral-insulated cable during a fire. At the same time, when the cover plate is closed with the slot box, the fireproof and heat-insulating plate on the cover plate covers the top of the C-shaped fireproof and heat-insulating component, thereby preventing external heat or flames from entering the slot box through the connection hole and improving fire resistance. Attached Figure Description

[0013] Figure 1 This is a simplified schematic diagram of the three-dimensional structure of this utility model;

[0014] Figure 2 This is a simplified top view of the slotted box in this utility model.

[0015] Figure 3 This is a simplified three-dimensional structural diagram of the connector in this utility model;

[0016] Figure 4 This is a simplified three-dimensional structural diagram of the C-type fireproof and heat-insulating component in this utility model.

[0017] The markings in the diagram are: 1-groove box, 2-connector, 3-fireproof and heat-insulating board one, 4-L-shaped strip, 5-C-shaped fireproof and heat-insulating component, 6-cover plate, 7-fireproof and heat-insulating board two. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] The following will combine Figures 1-4 A detailed description is provided of a mineral-insulated cable fireproof and heat-insulating trough according to an embodiment of this utility model.

[0020] Example:

[0021] This utility model provides a mineral-insulated cable fireproof and heat-insulating trough box, for reference. Figures 1 to 4 As shown, the structure includes several mineral-insulated cable trays 1 and connectors 2. The connectors 2 have a concave structure. Two adjacent trays 1 are connected together by bolts through the connectors 2. A fireproof and heat-insulating board 3 is fixedly connected to the inner side of the tray 1. In this structure, the trays 1 are connected and assembled using the connectors 2. Then, the mineral-insulated cables are placed in the trays 1. During use, the fireproof and heat-insulating board 3 enables the trays 1 to have a fireproof and heat-insulating function.

[0022] It should be noted that both the slot box 1 and the connector 2 mentioned above are made of metal.

[0023] refer to Figures 1 to 4 As shown, each slot box 1 is covered with a cover plate 6 on top, and the cover plate 6 is locked onto the slot box 1 by a buckle. A fireproof and heat-insulating plate 7 is fixedly connected to the inner side of the cover plate 6. In this structure, the cover plate 6 covers the top of the slot box 1, and the fireproof and heat-insulating plate 7 enables the cover plate 6 to have the function of fireproof and heat insulation.

[0024] It should be noted that the cover plate 6 is made of metal, and the buckle structure is an existing locking structure and a fixing technology well known to those skilled in the art. For details, please refer to the structure in patent CN102691715A.

[0025] refer to Figures 1 to 4 As shown, L-shaped strips 4 are fixedly connected to both sides of the inner walls of the slot box 1. C-shaped fireproof and heat-insulating parts 5 are snapped onto the L-shaped strips 4 at the connection between two adjacent slot boxes 1. The connecting bolts between the connector 2 and the slot box 1 are located inside the C-shaped fireproof and heat-insulating parts 5. In this structure, the C-shaped fireproof and heat-insulating parts 5 are inserted into the L-shaped strips 4 at the connection between two adjacent slot boxes 1, thereby covering the connecting bolts between the connector 2 and the slot box 1, thus isolating the connecting bolts from the mineral-insulated cable and preventing heat transfer from the connecting bolts from damaging the mineral-insulated cable during a fire. At the same time, when the cover plate 6 is closed with the slot box 1, the fireproof and heat-insulating plate 7 on the cover plate 6 covers the top of the C-shaped fireproof and heat-insulating parts 5, thereby preventing external heat or flames from entering the interior of the slot box 1 through the connection hole and improving fire resistance.

[0026] It should be noted that all L-shaped strips 4 mentioned above are made of metal.

[0027] refer to Figures 1 to 4 As shown, fireproof and heat-insulating board 1 and fireproof and heat-insulating board 2 are made of the same material, both being composite boards made of fireproof cotton and inorganic fire-resistant board.

[0028] refer to Figures 1 to 4 As shown, the C-type fireproof and heat-insulating component 5 is a composite board made of fireproof cotton and covered with inorganic fire-resistant board.

[0029] The implementation principle of a mineral-insulated cable fireproof and heat-insulating trunking according to an embodiment of this application is as follows: In use, the C-shaped fireproof and heat-insulating component 5 is inserted into the L-shaped strip 4 at the connection between two adjacent trunking boxes 1, thereby covering the connecting bolts between the connector 2 and the trunking box 1, thus isolating the connecting bolts from the mineral-insulated cable and preventing heat transfer from the connecting bolts from damaging the mineral-insulated cable during a fire. At the same time, when the cover plate 6 is closed with the trunking box 1, the fireproof and heat-insulating plate 7 on the cover plate 6 covers the top of the C-shaped fireproof and heat-insulating component 5, thereby preventing external heat or flames from entering the trunking box 1 through the connection hole and improving fire resistance.

[0030] This specification includes any feature disclosed in any appended claims, abstract, and drawings, which, unless specifically stated otherwise, may be replaced by other equivalent or similar features. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0031] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model 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 utility model.

[0032] Furthermore, in the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] The terms used in this invention, such as “above,” “over,” “below,” and “under,” indicating spatial relative position, are for ease of explanation and to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms of spatial relative position may be intended to include different orientations of the device in use or operation other than those shown in the figures. For example, if the device in the figures is flipped, a unit described as being “below” or “under” other units or features would be located “above” other units or features. Therefore, the exemplary term “under” can encompass both above and below orientations. The device may be otherwise oriented, rotated 90 degrees, or otherwise, and the spatially related descriptive terms used herein shall be interpreted accordingly.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] 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 the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fireproof and heat-insulating trough for mineral-insulated cables, comprising a plurality of troughs (1) for mineral-insulated cables and connecting pieces (2), characterized in that: Two adjacent slot boxes (1) are connected together by bolts through the connector (2). A fireproof and heat-insulating plate (3) is fixedly connected to the inner side of the slot box (1). L-shaped strips (4) are fixedly connected to both sides of the left and right inner walls of the slot box (1). C-shaped fireproof and heat-insulating components (5) are snapped onto the L-shaped strips (4) at the connection of two adjacent slot boxes (1).

2. A fire resistant and heat resistant trough for mineral insulated cables according to claim 1, characterized in that: The connecting bolt between the connector (2) and the slot (1) is located inside the C-type fireproof and heat-insulating component (5).

3. A fire resistant and heat resistant trough for mineral insulated cables according to claim 1, characterized in that: The connector (2) has a concave structure.

4. A fire resistant and heat resistant trough for mineral insulated electrical cables as claimed in claim 1, characterized in that: Each of the slot boxes (1) is covered with a cover plate (6) on top, and the cover plate (6) is locked onto the slot box (1) by a buckle. A fireproof and heat-insulating plate (7) is fixedly connected to the inner side of the cover plate (6).

5. A fire resistant slot of a mineral insulated cable according to claim 4, c h a r a c t e r i s e d in that: The fireproof and heat-insulating board one (3) and the fireproof and heat-insulating board two (7) are made of the same material, which are composite boards made of fireproof cotton and inorganic fire-resistant board.

6. A fire resistant, heat resistant trough for mineral insulated electrical cables as defined in claim 1, characterized in that: The C-type fireproof and heat-insulating component (5) is a composite board made of fireproof cotton and inorganic fire-resistant board.

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