Medium-voltage flame-retardant rubber jacketed flexible cable

Abstract

The utility model belongs to the technical field of rubber jacketed flexible cables, and particularly relates to a medium-voltage flame-retardant rubber jacketed flexible cable, which comprises a guide core and a rubber jacket outside the guide core, the conduits are located between the adjacent conducting cores and used for transferring heat in the high-temperature area of the cable to the low-temperature area, and heat conducting particles for accelerating axial heat transfer are arranged in the conduits; the heat dissipation unit is located in the outer ring area of the cable, and heat dissipation holes are evenly distributed in the outer side of the heat dissipation unit and used for accelerating outward emission of heat; and the branch pipe is located between the guide pipe and the heat dissipation unit and used for transmitting heat of the central area outwards and further used for forming a supporting structure to increase the external force resistance. According to the utility model, heat of a local high-temperature area of the cable can be conducted to a local lower-temperature area, so that heat emission is facilitated, a secondary heat dissipation structure can be formed in an outer ring area of the cable, and the cable has a supporting function to protect the operation quality of a guide core.

Description

Technical Field

[0001] This utility model belongs to the field of rubber-sheathed flexible cable technology, and in particular relates to a medium-voltage flame-retardant rubber-sheathed flexible cable. Background Technology

[0002] Medium-voltage flame-retardant rubber-sheathed flexible cable is a flexible and movable cable with flame-retardant properties. It is covered with rubber insulation and rubber sheath, making the cable flexible and easy to move. It is suitable for outdoor or oily environments, as well as special applications such as mining cables, coal mine communication cables, and control cables.

[0003] Currently, existing cables are affected by the environment, with some areas exposed to high temperatures, such as near heat sources or direct sunlight, while other parts are in relatively low-temperature environments. This leads to uneven temperature distribution, which accelerates the aging and failure of the rubber sheath. In addition, uneven current distribution and increased contact resistance can also cause this phenomenon, affecting the quality of cable use.

[0004] To address the aforementioned issues, this application proposes a medium-voltage flame-retardant rubber-sheathed flexible cable. Utility Model Content

[0005] The purpose of this utility model is to provide a medium-voltage flame-retardant rubber-sheathed flexible cable, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a medium-voltage flame-retardant rubber-sheathed flexible cable, comprising: a conductor core and an outer rubber sheath; a conduit located between adjacent conductor cores for transferring heat from the high-temperature region of the cable to the low-temperature region, with heat-conducting particles inside to accelerate axial heat transfer; a heat dissipation unit located in the outer ring region of the cable, with heat dissipation holes evenly distributed on the outer side to accelerate heat dissipation outward; and a branch pipe located between the conduit and the heat dissipation unit for transferring heat from the central region outward and also for forming a support structure to increase resistance to external forces.

[0008] Furthermore, the outer side of the conduit is provided with a convex pad, and positioning grooves are provided on both sides.

[0009] Furthermore, an arc-shaped pad is provided at one end of the branch pipe adjacent to the conduit, which is connected to the inside of the positioning groove for heat transfer.

[0010] Furthermore, the outer side of the arc-shaped pad is provided with a guide edge, which is used to abut against the inner side of the positioning groove to form a locking action.

[0011] Furthermore, the conduit is internally segmented with partitions to separate the heat-conducting particles, with each partition corresponding to a heat dissipation unit.

[0012] Furthermore, a sealing gasket is provided on the outside of the heat dissipation unit to seal the heat dissipation holes inside.

[0013] Furthermore, the heat-conducting particles are filled inside the conduit and branch pipes respectively to accelerate heat conduction.

[0014] This utility model has the following beneficial effects:

[0015] This invention, by adding a conduit, allows the high temperature in a localized area to be transferred to an adjacent low temperature area through heat-conducting particles during the cable's use. During this process, the heat is further transferred through the heat-conducting particles inside the branch pipe, thus promoting the heat to be discharged from the heat dissipation unit. This avoids material aging caused by high temperatures in localized areas and ensures the operational quality of the cable.

[0016] This invention allows for segmentation of the rubber sheath by adding a heat dissipation unit. This not only increases the cable's resistance to external forces but also isolates external damage to the cable, preventing the damaged area from spreading and facilitating cable repair.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the combined catheter and guide core of this utility model.

[0021] Figure 3 This is a schematic diagram of the cable cross-section structure of this utility model;

[0022] Figure 4 This is a partially enlarged structural diagram of part A of this utility model;

[0023] The attached diagram lists the components represented by each number as follows:

[0024] In the diagram: 1. Guide core; 2. Rubber sleeve; 3. Guide tube; 4. Convex pad; 5. Heat dissipation unit; 6. Sealing gasket; 7. Spacer; 8. Heat-conducting particles; 9. Branch pipe; 10. Arc-shaped pad; 11. Heat dissipation hole; 12. Positioning groove; 13. Guide edge. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements 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.

[0027] Please see Figure 1-4 As shown, this utility model is a medium-voltage flame-retardant rubber-sheathed flexible cable, comprising: a conductor core 1 and an outer rubber sheath 2;

[0028] The conduit 3, located between adjacent conductor cores 1, is used to transfer heat from the high-temperature area of ​​the cable to the low-temperature area, and is equipped with heat-conducting particles 8 inside to accelerate the axial transfer of heat.

[0029] The heat dissipation unit 5 is located in the outer ring area of ​​the cable, and heat dissipation holes 11 are evenly distributed on the outer side to accelerate the heat dissipation to the outside.

[0030] Branch pipe 9, located between conduit 3 and heat dissipation unit 5, is used to transfer heat from the central area to the outside and also to form a support structure to increase resistance to external forces.

[0031] This embodiment provides a cable to prevent heat accumulation in local areas. By paralleling the conduit 3 and the core 1, heat can be transferred axially, allowing heat from high-temperature areas to be transferred to lower-temperature areas. This increases the heat transfer area and improves the heat dissipation rate while protecting the local structure from damage. In addition, it can be combined with the external heat dissipation unit 5 via the branch pipe 9, which not only allows heat to reach the outer ring area for heat dissipation but also forms a protective structure for the core 1.

[0032] The outer side of the conduit 3 is provided with a convex pad 4, and positioning grooves 12 are provided on both sides. The grooves are of a structure that is smaller on the outside and larger on the inside.

[0033] Among them, one end of the adjacent conduit 3 of the branch pipe 9 is provided with an arc-shaped pad 10, which is connected to the inside of the positioning groove 12 for heat transfer, so that the heat is transferred to the branch pipe 9 and finally reaches the heat dissipation unit 5.

[0034] The outer side of the arc-shaped pad 10 is provided with a guide edge 13, which is used to abut against the inner side of the positioning groove 12 to form a lock, and can also form a support to ensure structural stability during transmission.

[0035] The conduit 3 is divided into sections with partitions 7 to separate the heat-conducting particles 8. Each partition 7 corresponds to the heat dissipation unit 5, forming a heat transfer area.

[0036] The heat dissipation unit 5 is provided with a sealing gasket 6 on the outside to seal the heat dissipation hole 11 inside, preventing cable material from entering the interior and forming a blockage during the extrusion operation.

[0037] Among them, the heat-conducting particles 8 are filled inside the conduit 3 and the branch pipe 9 to accelerate heat conduction.

[0038] It is understood that this utility model can conduct heat from the local high-temperature area of ​​the cable to the local low-temperature area, which facilitates heat dissipation. At the same time, it can also form a secondary heat dissipation structure in the outer ring area of ​​the cable, and at the same time has a support function to protect the operating quality of the conductor 1.

[0039] A specific application of the operation process in this embodiment is as follows: When preparing the cable, the conduit 3 is first placed between the transmission paths of adjacent cores 1, and then the heat dissipation unit 5 is installed in segments. The positioning combination is formed by the snap-fit ​​of the arc-shaped pad 10 and the positioning groove 12, so that the segmented rubber sleeve 2 is formed during the extrusion operation. In this way, the heat in the central area of ​​the cable can be collected by the conduit 3 and axially transferred by the internal heat-conducting particles 8, so that it is conducted from the high temperature area to the low temperature area. This prevents heat from accumulating in local areas and prevents the material from aging faster. At the same time, during the axial heat transfer, the heat can also be conducted to the heat dissipation unit 5 through the branch pipe 9 and the internal heat-conducting particles 8, so that it can directly dissipate heat in the outer ring area of ​​the cable, and the heat dissipation hole 11 accelerates the heat dissipation.

[0040] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., 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.

[0041] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A medium-voltage flame-retardant rubber-sheathed flexible cable, characterized in that, include: The guide core (1) and its outer rubber sleeve (2); The conduit (3) is located between adjacent conductors (1) and is used to transfer heat from the high-temperature area of ​​the cable to the low-temperature area. It is equipped with heat-conducting particles (8) to accelerate the axial transfer of heat. The heat dissipation unit (5) is located in the outer ring area of ​​the cable, and heat dissipation holes (11) are evenly distributed on the outside to accelerate the heat dissipation to the outside. Branch pipe (9), located between conduit (3) and heat dissipation unit (5), is used to transfer heat from the central area to the outside and also to form a support structure to increase resistance to external forces.

2. The medium-voltage flame-retardant rubber-sheathed flexible cable according to claim 1, characterized in that: The outer side of the conduit (3) is provided with a convex pad (4), and positioning grooves (12) are provided on both sides.

3. The medium-voltage flame-retardant rubber-sheathed flexible cable according to claim 1, characterized in that: The branch pipe (9) has an arc-shaped pad (10) at one end of the adjacent conduit (3), which is connected to the inside of the positioning groove (12) for heat transfer.

4. A medium-voltage flame-retardant rubber-sheathed flexible cable according to claim 3, characterized in that: The outer side of the arc-shaped pad (10) is provided with a guide edge (13) to abut against the inner side of the positioning groove (12) to form a locking action.

5. A medium-voltage flame-retardant rubber-sheathed flexible cable according to claim 1, characterized in that: The conduit (3) is divided into sections with partitions (7) to separate the heat-conducting particles (8), and each partition (7) corresponds to a heat dissipation unit (5).

6. A medium-voltage flame-retardant rubber-sheathed flexible cable according to claim 1, characterized in that: The heat dissipation unit (5) is provided with a sealing gasket (6) on the outside to seal the heat dissipation hole (11) inside.

7. A medium-voltage flame-retardant rubber-sheathed flexible cable according to claim 1, characterized in that: The heat-conducting particles (8) are filled inside the conduit (3) and the branch pipe (9) respectively to accelerate heat conduction.

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