Electric heat tracing band explosion-proof tee joint box

Abstract

The utility model discloses an electric heat tracing band explosion -proof tee joint box, including box body and setting in the wiring port of three lateral surfaces of box body, the inner rear wall of box body is fixed and is embedded with first wiring post, second wiring post and third wiring post, first wiring post is equipped with two, and is arranged in horizontal arrangement, second wiring post is equipped with two, and is arranged in vertical arrangement, third wiring post is equipped with one, and is located one side of the inner rear wall of box body, the inner rear wall of box body still is equipped with first baffle, second baffle and third baffle, first baffle is located the bottom of one first wiring post, second baffle sets up between two second wiring posts, and its shape is U shape and surrounds the second wiring post located above partially, the utility model discloses through built -in baffle realizes the physical isolation between lines, and the copper row of pre -buried ensures the safety of connection, and optimizes space layout to improve explosion -proof security, insulation reliability and installation maintenance convenience significantly.

Description

Technical Field

[0001] This utility model relates to the technical field of junction boxes for electric heating cables, and specifically to an explosion-proof three-way junction box for electric heating cables. Background Technology

[0002] An explosion-proof junction box for electric heating tape is an electrical connection device specifically designed for flammable and explosive hazardous environments. Its core function is to safely and reliably connect the electric heating tape to the power supply in such special locations, or to complete the branching and convergence of the electric heating tape, while ensuring that the entire connection part is in a good sealed and explosion-proof protection state.

[0003] Currently, common explosion-proof junction boxes for electric heating cables present certain safety hazards and operational inconveniences in practical use. Due to the unique structure of the electric heating cable, its outer insulation layer must be stripped during wiring, exposing multiple strands of copper wire inside, which are then connected to the corresponding terminals inside the box. During this process, the multiple exposed copper wires are intertwined in a confined space, making them highly susceptible to short circuits due to contact or close proximity, potentially leading to electrical sparks or even explosions. To mitigate this hazard, existing technology typically involves manually wrapping the exposed areas with insulating tape. However, this method not only has limited insulation effectiveness and is prone to insulation failure due to tape aging or poor adhesion, but also suffers from uneven wrapping thickness and adhesive residue, making it difficult to completely eliminate the possibility of leakage and short circuits.

[0004] In addition, this insulation method also results in messy and disorderly cable arrangement inside the box, which not only affects the effective use of internal space, but also causes significant inconvenience for subsequent troubleshooting, line testing and maintenance replacement.

[0005] Therefore, providing an explosion-proof junction box for electric heating cables that is structurally sound, reliably insulated, easy to install, and convenient to maintain has become a pressing technical problem to be solved in this field. Utility Model Content

[0006] The present invention provides an explosion-proof three-way junction box for electric heating cables to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An explosion-proof three-way junction box for electric heating tape includes a box body and wiring ports disposed on three sides of the box body. A first terminal, a second terminal, and a third terminal are fixedly embedded in the inner rear wall of the box body. There are two first terminals arranged horizontally. There are two second terminals arranged vertically. There is one third terminal located on one side of the inner rear wall of the box body.

[0009] The rear wall of the box is further provided with a first partition, a second partition, and a third partition; the first partition is located at the bottom of one of the first terminals; the second partition is disposed between two second terminals, and is U-shaped and partially surrounds the upper second terminal; the third partition is disposed between the third terminal and the lower second terminal.

[0010] The two first terminals are connected by a first copper busbar, and the two second terminals are connected by a second copper busbar; both the first and second copper busbars are embedded inside the rear wall of the housing.

[0011] Preferably, a sealing cavity is formed at the connection between the wiring port and the housing, and a sealing block is embedded in the sealing cavity.

[0012] Preferably, the first partition, the second partition, and the third partition are integrally injection molded with the box body.

[0013] Preferably, the first copper busbar and the second copper busbar are spatially and electrically isolated from each other.

[0014] Beneficial effects

[0015] Through the above technical solution, this utility model has the following significant beneficial effects:

[0016] 1. High safety, effectively eliminating the risk of short circuits:

[0017] By setting a first partition, a second partition, and a third partition inside the box, exposed copper wires of different circuits or phases can be effectively physically isolated during wiring, fundamentally avoiding short circuits caused by cables being close to or in contact with each other, and greatly improving safety in flammable and explosive environments.

[0018] 2. High structural integration and reliable insulation performance:

[0019] The first and second copper busbars are pre-embedded inside the rear wall of the housing, achieving a fully enclosed internal connection of the main conductive circuit. This not only eliminates the need for exposed wire connections and removes the risk of discharge and short circuits at that location, but also makes the overall structure more compact and the insulation performance more stable and reliable, far superior to the traditional method of wrapping with insulating tape.

[0020] 3. The internal layout is well-organized, facilitating installation and maintenance:

[0021] The partition structure rationally divides the internal space, making wiring operations clear and cable arrangement orderly, completely changing the previous messy state inside the junction box. This design greatly facilitates the initial installation and wiring, as well as subsequent inspection, maintenance, and even replacement work, effectively reducing operational difficulty and labor costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0024] Figure 3 This is a schematic diagram of the connection structure between the terminal block and the copper busbar of this utility model;

[0025] Figure 4 This is a schematic diagram of the wiring structure of this utility model.

[0026] The correspondence between the labels and component names in the attached figures is as follows:

[0027] 1. Box body; 2. Wiring port; 3. First terminal; 4. Second terminal; 5. Third terminal; 6. First partition; 7. Second partition; 8. Third partition; 9. First copper busbar; 10. Second copper busbar; 11. Sealing cavity; 12. Sealing block. Detailed Implementation

[0028] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. 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.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", 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 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.

[0030] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] To avoid excessive and unnecessary details, well-known structures or functions will not be described in detail in the following embodiments.

[0032] like Figure 1-4 The diagram shown is a structural schematic of an explosion-proof three-way junction box for an electric heating cable according to a preferred embodiment of this utility model.

[0033] In this embodiment, the device includes a housing 1 and wiring ports 2 respectively disposed on three different sides of the housing 1. A first wiring post 3, a second wiring post 4 and a third wiring post 5 are fixedly embedded in the inner rear wall of the housing 1. There are two first wiring posts 3 arranged horizontally. There are two second wiring posts 4 arranged vertically. There is one third wiring post 5 located on one side of the inner rear wall of the housing 1.

[0034] To further enhance electrical safety and insulation, the rear wall of the housing 1 is further provided with a first partition 6, a second partition 7, and a third partition 8; the first partition 6 is located at the bottom of one of the first terminals 3; the second partition 7 is disposed between two second terminals 4, and is U-shaped and partially surrounds the upper second terminal 4; the third partition 8 is disposed between the third terminal 5 and the lower second terminal 4, thereby effectively separating the different terminals.

[0035] The two first terminals 3 are electrically connected by a first copper busbar 9, and the two second terminals 4 are electrically connected by a second copper busbar 10; both the first copper busbar 9 and the second copper busbar 10 are embedded in the interior of the rear wall of the box body 1, thus serving the dual purpose of structural stability and insulation protection.

[0036] In this embodiment, a sealing cavity 11 is formed at the connection between the wiring port 2 and the box body 1. A sealing block 12 is embedded in the sealing cavity 11. The sealing block 12 is made of rubber. While achieving internal electrical isolation and insulation enhancement, it ensures the overall high-level explosion-proof and sealing performance of the box body 1, effectively resisting the intrusion of external moisture, corrosive gases or dust, and ensuring that the electric heat tracing system can operate stably and reliably for a long time.

[0037] In this embodiment, the first partition 6, the second partition 7 and the third partition 8 are integrally injection molded with the box body 1 to ensure the overall structural mechanical strength and consistency.

[0038] In this embodiment, the first copper busbar 9 and the second copper busbar 10 are completely isolated from each other in terms of space and electrical connection, further eliminating the risk of short circuit and improving safety in use.

[0039] The explosion-proof three-way junction box for electric heating tape of this utility model has common mechanical installation, connection or setting methods, and can be implemented as long as it can achieve its beneficial effect.

[0040] All technologies not described in detail in this utility model are known technologies. Those skilled in the art can easily implement this utility model based on their understanding of this specification, and the contents shown in the accompanying drawings are part of this specification.

[0041] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. An explosion-proof tee junction box for electric heat tracing, comprising a box body (1) and a junction port (2) arranged on three sides of the box body (1), characterized in that: The inner rear wall of the box (1) is fixedly embedded with a first terminal (3), a second terminal (4) and a third terminal (5); there are two first terminal (3) arranged horizontally; there are two second terminal (4) arranged vertically; there is one third terminal (5) located on one side of the inner rear wall of the box (1); The inner rear wall of the box (1) is also provided with a first partition (6), a second partition (7) and a third partition (8); the first partition (6) is located at the bottom of one of the first terminals (3); the second partition (7) is disposed between two second terminals (4), and its shape is U-shaped and partially surrounds the second terminal (4) located above; the third partition (8) is disposed between the third terminal (5) and the second terminal (4) located below; The two first terminals (3) are connected by a first copper busbar (9), and the two second terminals (4) are connected by a second copper busbar (10); the first copper busbar (9) and the second copper busbar (10) are both embedded in the interior of the rear wall of the box body (1).

2. The explosion-proof tee junction box for electric heating tape according to claim 1, characterized in that: A sealing cavity (11) is formed at the connection between the wiring port (2) and the box body (1), and a sealing block (12) is embedded in the sealing cavity (11).

3. The explosion-proof tee junction box for electric heating tape according to claim 1, characterized in that: The first partition (6), the second partition (7) and the third partition (8) are integrally injection molded with the box body (1).

4. The explosion-proof tee junction box for electric heating tape according to claim 1, characterized in that: The first copper busbar (9) and the second copper busbar (10) are spatially and electrically isolated from each other.

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