Cable branch box capable of controlling temperature rise

Abstract

The utility model discloses a cable branch box capable of controlling temperature rise, which comprises a box body, a supporting plate is arranged in the box body, the supporting plate is provided with a plurality of insulation supporting seats at equal intervals, conducting rods are arranged in the insulation supporting seats, the conducting rods are sleeved with heat conduction blocks, and the heat conduction blocks are arranged on the supporting plate. A plurality of heat dissipation fins at equal intervals are evenly distributed on the outer wall of the heat conduction block with a circle point as the axis, the insulating supporting base is provided with a detachable protective sleeve, and a plurality of umbrella parts are arranged on the outer wall of the protective sleeve. The conductive rod conducts heat to the heat conduction block, the heat is exchanged with cold air through the heat dissipation fins, and the hot air is discharged through the heat dissipation holes, so that the temperature rise at the joint of the conductive rod and the cable is effectively controlled, the temperature at the joint is obviously reduced, the stability of electrical connection is improved, and the long-term stability and reliability of electrical connection are guaranteed. And the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable branch box technical field especially relates to a kind of cable branch boxes of temperature rise control. BACKGROUND

[0002] With the development of the process of cable distribution network, when the independent load with small capacity is distributed relatively concentrated, cable branch box is needed to connect cable multi-branch, the main function of cable branch box is to tap and switch cable, cable branch box can make the connection of cable more convenient and simple, and also can effectively protect cable.

[0003] In the prior art, due to the objective existence of conductor resistance, heat will inevitably be generated during the operation of the cable. In particular, at the connection between the cable and the cable joint, the temperature is often higher due to the existence of contact resistance.

[0004] Under the long-term high-temperature environment, the insulation material of the cable will accelerate aging, resulting in a significant decrease in its insulation performance. More seriously, excessive temperature may cause the loosening or melting of the cable and the joint, thereby affecting the stability of the electrical connection. Continuous high-temperature operation will also significantly shorten the service life of the cable and electrical components, increase maintenance costs and safety hazards. Therefore, the applicant has made a beneficial design and found a method to solve the above problems. The technical solution to be introduced below is generated in this background. SUMMARY

[0005] The utility model discloses a kind of to overcome the deficiencies of the design of above-mentioned traditional cable branch box, provide a kind of product of reducing temperature rise, improve stability.

[0006] To solve the above problems, the utility model adopts the following technical scheme.

[0007] A kind of cable branch box of temperature rise control, including box, the box is equipped with support plate, the support plate is equipped with several equidistant insulation support seat, the insulation support seat is equipped with electrically conductive rod, the electrically conductive rod is equipped with heat conduction block, the outer wall of the heat conduction block is evenly distributed with several equidistant radiating fins with round dot as axis, the insulation support seat is equipped with detachable protective sleeve, the outer wall of the protective sleeve is equipped with several umbrella parts, the inner wall of the protective sleeve is equipped with several equidistant heat dissipation holes and is located between adjacent umbrella parts.

[0008] Preferably, the insulation support seat is provided with a flange, and the flange is fixed on the support plate by bolts.

[0009] Preferably, the two ends of the insulation support seat are provided with connecting parts, the outer wall of the connecting part is provided with an external thread groove, and a retaining ring is arranged below the external thread groove.

[0010] Preferably, one of the connecting parts is provided with a countersunk hole, and the countersunk hole is provided with a threaded hole.

[0011] Preferably, the protective sleeve has a through hole for the conductive rod to be exposed, the protective sleeve has an internal threaded groove and is threaded to the external threaded groove, and the protective sleeve abuts against the retaining ring.

[0012] Preferably, the conductive rod is provided with a limiting ring and is disposed in the countersunk hole. The limiting ring is provided with a fastening screw and is threadedly connected to the threaded hole, so that the conductive rod is connected and fixed to the connecting part.

[0013] Preferably, the support plate is provided with partitions located on both sides of the insulating support base, and one side of the partition is provided with an inclined guide portion located below the insulating support base.

[0014] Preferably, the bottom of the enclosure is provided with a number of ventilation holes, and a cooling fan is provided at each ventilation hole and located between adjacent partitions.

[0015] Beneficial effects:

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In this invention, when the cable and the conductive rod are electrically connected, the heat generated at the connection point is conducted through the conductive rod to the heat-conducting block, where it exchanges heat with cold air via the heat dissipation fins and is discharged through the heat dissipation holes. This effectively controls the temperature rise at the connection point between the conductive rod and the cable, significantly reducing the temperature at the connection and improving the stability of the electrical connection. Furthermore, a cooling fan draws in outside air, and the guide section optimizes the airflow path, increasing the coverage area of ​​the cold air and significantly improving the airflow speed inside the protective sleeve, further enhancing heat exchange efficiency. Through this optimized heat dissipation structure design, the heat dissipation efficiency at the cable connection point is significantly improved, effectively ensuring the long-term stability and reliability of the electrical connection, extending the service life of the cable and electrical components, and reducing equipment maintenance costs and potential safety hazards. Attached Figure Description

[0018] Fig. 1 This is a schematic diagram of the structure of a cable branch box for controlling temperature rise according to the present invention;

[0019] Fig. 2 This is a side cross-sectional view of a cable branch box for controlling temperature rise according to the present invention.

[0020] Fig. 3 This is an exploded view of a cable branch box for controlling temperature rise according to the present invention.

[0021] The correspondence between the labels and component names in the attached figures is as follows:

[0022] Reference numerals in the attached diagram: 1. Housing; 2. Support plate; 3. Insulating support base; 4. Conductive rod; 5. Heat-conducting block; 6. Protective sleeve; 7. Cooling fan;

[0023] 11. Ventilation holes;

[0024] 21. Partition; 22. Guide section;

[0025] 31. Flange; 32. Bolt; 33. Connecting part; 34. External thread groove; 35. Retaining ring;

[0026] 331. Countersunk hole; 332. Threaded hole;

[0027] 41. Limiting ring; 42. Fastening screw;

[0028] 51. Heat dissipation fins;

[0029] 61. Umbrella section; 62. Heat dissipation hole; 63. Through hole; 64. Internal threaded groove. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0033] Reference example Figs. 1 to 3A cable branch box for controlling temperature rise includes a box body 1, a support plate 2 inside the box body 1, a plurality of equally spaced insulating support seats 3 on the support plate 2, a conductive rod 4 inside the insulating support seat 3, a heat-conducting block 5 on the conductive rod 4, a plurality of equally spaced heat dissipation fins 51 evenly distributed around a dot as the axis on the outer wall of the heat-conducting block 5, a detachable protective sleeve 6 on the insulating support seat 3, a plurality of umbrella parts 61 on the outer wall of the protective sleeve 6, and a plurality of equally spaced heat dissipation holes 62 on the inner wall of the protective sleeve 6, located between adjacent umbrella parts 61;

[0034] It is worth mentioning that the insulating support 3 is provided with a flange 31, which is fixed to the support plate 2 by bolts 32;

[0035] It is worth mentioning that the insulating support base 3 has connecting parts 33 at both ends, and the outer wall of the connecting part 33 has an external thread groove 34. A retaining ring 35 is provided below the external thread groove 34. The external thread facilitates the disassembly and installation of the protective sleeve 6, and the retaining ring 35 limits the connection of the protective sleeve 6.

[0036] It is worth mentioning that one of the connecting parts 33 is provided with a countersunk hole 331, and the countersunk hole 331 is provided with a threaded hole 332. The countersunk hole 331 makes the limiting ring 41 flush with the end face of the connecting part 33.

[0037] It is worth mentioning that the protective sleeve 6 is provided with a through hole 63 for the external exposure of the conductive rod 4. The protective sleeve 6 is provided with an internal thread groove 64 and is threaded to the external thread groove 34. The protective sleeve 6 abuts against the retaining ring 35. The protective sleeve 6 not only plays a protective role, but also maintains a certain distance between the heat dissipation fins 51 and its inner wall, thereby improving the electrical clearance and increasing the insulation performance.

[0038] It is worth mentioning that the conductive rod 4 is provided with a limiting ring 41 and is set in the countersunk hole 331. The limiting ring 41 is provided with a fastening screw 42 and is threadedly connected to the threaded hole 332, so that the conductive rod 4 is connected and fixed to the connecting part 33.

[0039] It is worth mentioning that the support plate 2 is provided with a partition 21 and is located on both sides of the insulating support base 3. One side of the partition 21 is provided with an inclined guide 22 and is located below the insulating support base 3. The material of the partition 21 can be selected as an insulating and flame-retardant material. In addition, the partition 21 increases the creepage distance and electrical clearance between adjacent conductive rods 4, further increasing the insulation performance.

[0040] It is worth mentioning that the bottom of the box 1 is provided with several ventilation holes 11, and a cooling fan 7 is provided at the ventilation holes 11 and located between adjacent partitions 21. A filter screen can be installed at the ventilation holes 11. Since it is not the focus of protection of this application, it is mentioned here.

[0041] The working principle of this utility model is described as follows:

[0042] After the cable is electrically connected to the conductive rod 4, the heat generated at the connection point is conducted to the heat-conducting block 5 through the conductive rod 4. The heat is then exchanged with the cold air through the heat dissipation fins 51 and the hot air is discharged through the heat dissipation holes 62. This effectively controls the temperature rise at the connection point between the conductive rod 4 and the cable. This design significantly reduces the temperature at the connection point and improves the stability of the electrical connection.

[0043] In addition, the cooling fan 7 draws in outside air and the guide part 22 optimizes the flow path of the cold air, increasing the coverage of the cold air and significantly improving the air flow speed inside the protective sleeve 6, further improving the heat exchange efficiency. Through the optimized heat dissipation structure design, the heat dissipation efficiency at the cable connection is significantly improved, effectively ensuring the long-term stability and reliability of the electrical connection, extending the service life of the cable and electrical components, and reducing the maintenance cost and potential safety hazards of the equipment.

[0044] 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. A cable branch box for controlling temperature rise, comprising a box body (1), wherein a support plate (2) is provided inside the box body (1), characterized in that: The support plate (2) is provided with several equally spaced insulating support seats (3). The insulating support seat (3) is provided with a conductive rod (4). The conductive rod (4) is fitted with a heat-conducting block (5). The outer wall of the heat-conducting block (5) is evenly distributed with several equally spaced heat dissipation fins (51) with a dot as the axis. The insulating support seat (3) is provided with a detachable protective sleeve (6). The outer wall of the protective sleeve (6) is provided with several umbrella parts (61). The inner wall of the protective sleeve (6) is provided with several equally spaced heat dissipation holes (62) located between adjacent umbrella parts (61).

2. The cable branch box for controlling temperature rise according to claim 1, characterized in that: The insulating support base (3) is provided with a flange (31), which is fixed to the support plate (2) by bolts (32).

3. The cable branch box for controlling temperature rise according to claim 1, characterized in that: The insulating support base (3) has connecting parts (33) at both ends, and the outer wall of the connecting part (33) has an external thread groove (34), and a retaining ring (35) is provided below the external thread groove (34).

4. The cable branch box for controlling temperature rise according to claim 3, characterized in that: One of the connecting parts (33) is provided with a countersunk hole (331), and the countersunk hole (331) is provided with a threaded hole (332).

5. The cable branch box for controlling temperature rise according to claim 4, characterized in that: The protective sleeve (6) is provided with a through hole (63) for the external exposure of the conductive rod (4), the protective sleeve (6) is provided with an internal thread groove (64) and is threaded to an external thread groove (34), and the protective sleeve (6) abuts against a retaining ring (35).

6. The cable branch box for controlling temperature rise according to claim 4, characterized in that: The conductive rod (4) is provided with a limiting ring (41) and is set in the countersunk hole (331). The limiting ring (41) is provided with a fastening screw (42) and is threadedly connected to the threaded hole (332) so that the conductive rod (4) is connected and fixed to the connecting part (33).

7. The cable branch box for controlling temperature rise according to claim 1, characterized in that: The support plate (2) is provided with a partition (21) and is located on both sides of the insulating support base (3). One side of the partition (21) is provided with an inclined guide (22) and is located below the insulating support base (3).

8. The cable branch box for controlling temperature rise according to claim 7, characterized in that: The bottom of the box (1) is provided with several ventilation holes (11), and a cooling fan (7) is provided at each ventilation hole (11) and located between adjacent partitions (21).

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