Composite power transmission cable

Abstract

The utility model discloses a kind of composite power transmission cables, the inside rubber insulation protective layer is tightly covered in the center power transmission conductor outside, multiple the inside rubber insulation protective layer outside collectively covered with rubber bundling inner layer, the rubber protective inner layer outside is tightly covered with rubber protective inner layer, the rubber protective inner layer outside is tightly covered with rubber protective outer layer, the utility model is through the double-layer structure of rubber protective inner layer and rubber protective outer layer, by installing circular arc groove cooperation bundling rubber band, plastic connecting snap ring is installed to cable outside, by connecting arc top block, hoisting top ring is connected to cable top, by outside steel cable through hoisting top ring top portion hoisting cable top portion, and then the traction of cable end connection place is shared, effectively prevent the phenomenon that cable connection place appears deformation and drop after long time use, effectively improve the service life of cable whole.

Description

Technical Field

[0001] This utility model relates to the field of power transmission cable technology, specifically a composite power transmission cable. Background Technology

[0002] Power cables are cables used to transmit and distribute electrical energy. They are commonly used in urban underground power grids, power plant lead-out lines, internal power supply for industrial and mining enterprises, and underwater transmission lines across rivers and seas. The proportion of cables in power lines is gradually increasing. Power cables are cable products used to transmit and distribute high-power electrical energy in the main lines of the power system, including power cables of various voltage levels from 1 to 500kV and above, and various types of insulation.

[0003] However, due to the lack of corresponding auxiliary installation structures during the use of power cables, the weight of the cable itself is entirely borne by the connection point after connection. This causes the cable connection point to deform after long-term use, reducing the installation stability of the cable. Utility Model Content

[0004] This utility model provides a composite power transmission cable, which can effectively solve the problem mentioned in the background art that the current power cables lack corresponding auxiliary installation structures during use, causing the cable's own weight to be entirely borne by the connection point after connection, resulting in deformation of the cable connection point after long-term use and reducing the installation stability of the cable.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a composite power transmission cable, comprising a central power transmission conductor, wherein the outer side of the central power transmission conductor is tightly covered with an inner rubber insulation protective layer, and the outer sides of multiple inner rubber insulation protective layers are collectively covered with a rubber bundle inner layer;

[0006] The inner layer of the rubber bundle is equipped with an external snap-fit ​​lifting mechanism.

[0007] The external snap-fit ​​hoisting mechanism includes an inner rubber protective layer, an outer rubber protective layer, an arc-shaped mounting groove, a plastic connecting ring, a connecting arc-shaped top block, a hoisting top ring, and a binding rubber strap.

[0008] The inner layer of the rubber bundle is tightly wrapped with a rubber protective inner layer, and the outer layer of the rubber protective inner layer is tightly wrapped with a rubber protective outer layer. The outer layer of the rubber protective outer layer has equidistant and uniformly spaced installation arc grooves along the axial direction. A plastic connecting ring is tightly engaged inside the installation arc groove. A connecting arc-shaped top block is fixedly installed at the top center of the plastic connecting ring. A lifting top ring is slidably engaged inside the top of the connecting arc-shaped top block. The bottom inner side of the plastic connecting ring is tightly wrapped with a binding rubber strip.

[0009] Preferably, there is a gap between the outer side of the hoisting top ring and the top slot of the connecting arc-shaped top block, and the outer side of the binding rubber strip and the outer side of the plastic connecting ring are flush with each other.

[0010] Preferably, the inner layer of the rubber bundle is provided with an internal support and heat dissipation mechanism;

[0011] The internal support heat dissipation mechanism includes a central connecting strip, an elastic bending rubber block, a fan-shaped filling block, a connecting fan-shaped rubber strip, and a heat-conducting rectangular sheet;

[0012] A central connecting strip is equidistantly arranged on the inner side of the inner layer of the rubber bundle. An elastically bent rubber block is fixedly connected to the end of the central connecting strip. A fan-shaped filling block is bonded to the side of the central connecting strip at the gap between the inner rubber insulating protective layers. A connecting fan-shaped rubber strip is fixedly connected to the end of the fan-shaped filling block. A heat-conducting rectangular sheet is equidistantly installed on the outer side of the fan-shaped filling block.

[0013] Preferably, the ends of the central connecting strip are connected by elastically bent rubber blocks, the ends of the fan-shaped filling blocks are connected by connecting fan-shaped rubber strips, and the outer side of the heat-conducting rectangular sheet is tightly fitted to the inner wall of the rubber bundle inner layer.

[0014] Preferably, the outer sides of the inner and outer rubber protective layers are jointly provided with an external auxiliary marking mechanism;

[0015] The external auxiliary marking mechanism includes an arc-shaped mounting groove, a connecting silicone strip, an auxiliary marking reflective strip, and a filling adhesive strip;

[0016] The inner and outer rubber protective layers are provided with equally spaced arc-shaped grooves along the circumferential direction. A connecting silicone strip is bonded inside the arc-shaped groove. An auxiliary marking reflective strip is bonded at equal intervals to the outside of the connecting silicone strip. A filler strip is bonded between the ends of the connecting silicone strip and the auxiliary marking reflective strip.

[0017] Preferably, the outer surface of the auxiliary marking reflective strip is flush with the outer surface of the rubber protective outer layer, and the outer surface of the filling strip is tightly fitted with the outer surface of the plastic connecting ring.

[0018] Compared with the prior art, the advantages of this utility model are: the structure of this utility model is scientific and reasonable, and it is safe and convenient to use.

[0019] 1. An external snap-fit ​​hoisting mechanism is installed. The double-layer structure consisting of an inner and outer rubber protective layer provides multiple layers of protection for the outside of the power cable, thereby improving the overall protection performance of the cable. The plastic connecting ring is installed on the outside of the cable by installing an arc groove and binding rubber tape. The hoisting top ring is connected to the top of the cable by connecting an arc-shaped top block. The top of the cable is hoisted by passing an external steel cable through the top of the hoisting top ring. This realizes the distribution of the traction force on the cable end connection, effectively preventing the cable from deforming and falling off at the connection after long-term use, and effectively improving the overall service life of the cable.

[0020] 2. An internal support and heat dissipation mechanism is provided. The fan-shaped filler block is installed inside the rubber bundle through the central connecting strip. The central connecting strip and the fan-shaped filler block form an isolation support for the internal rubber insulation protective layer to prevent displacement of the central transmission conductor during cable use. The flexible bending rubber block and connecting fan-shaped rubber strip increase the flexibility of the internal structure of the cable to ensure that the cable can be flexibly bent during use. The heat-conducting rectangular sheet conducts heat from inside the cable to the outside, thereby improving the overall heat dissipation performance of the cable.

[0021] 3. An external auxiliary marking mechanism is set up. The connecting silicone strip is installed on the outside of the cable by installing an arc groove. The gap at the end of the auxiliary marking reflective strip is filled by filling strip to improve the stability of the auxiliary marking reflective strip installation. The reflective characteristics of the auxiliary marking reflective strip allow maintenance personnel to quickly determine the cable route with a flashlight, thereby effectively improving the overall ease of use of the cable. Attached Figure Description

[0022] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0023] In the attached diagram:

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the end face of this utility model;

[0026] Figure 3 This is a schematic diagram of the external snap-fit ​​hoisting mechanism of this utility model;

[0027] Figure 4 This is a schematic diagram of the internal support and heat dissipation mechanism of this utility model;

[0028] Figure 5 This is a schematic diagram of the external auxiliary marking mechanism of this utility model;

[0029] Labels in the diagram: 1. Central transmission conductor; 2. Inner rubber insulation protective layer; 3. Inner layer of rubber bundle;

[0030] 4. External snap-fit ​​hoisting mechanism; 401. Inner rubber protective layer; 402. Outer rubber protective layer; 403. Installation arc groove; 404. Plastic connecting snap ring; 405. Connecting arc-shaped top block; 406. Hoisting top ring; 407. Bundling rubber straps;

[0031] 5. Internal support heat dissipation mechanism; 501. Central connecting strip; 502. Flexible bending rubber block; 503. Fan-shaped filling block; 504. Connecting fan-shaped rubber strip; 505. Heat-conducting rectangular sheet;

[0032] 6. External auxiliary marking mechanism; 601. Installing arc groove; 602. Connecting silicone strip; 603. Auxiliary marking reflective strip; 604. Filling adhesive strip. Detailed Implementation

[0033] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0034] Example: Figures 1-5 As shown, this utility model provides a technical solution, a composite power transmission cable, including a central transmission conductor 1, an inner rubber insulation protective layer 2 tightly wrapped around the outside of the central transmission conductor 1, and a rubber bundle inner layer 3 wrapped around the outside of multiple inner rubber insulation protective layers 2.

[0035] The inner layer 3 of the rubber bundle is equipped with an external snap-fit ​​lifting mechanism 4.

[0036] The external snap-fit ​​hoisting mechanism 4 includes a rubber protective inner layer 401, a rubber protective outer layer 402, an installation arc groove 403, a plastic connecting snap ring 404, a connecting arc-shaped top block 405, a hoisting top ring 406, and a binding rubber strap 407.

[0037] A rubber inner layer 3 is tightly wrapped with a rubber protective inner layer 401, and a rubber protective outer layer 402 is tightly wrapped with the outer layer of the rubber protective inner layer 401. The outer layer of the rubber protective outer layer 402 has equidistant, evenly spaced mounting arc grooves 403 on its outer side along the axial direction. A plastic connecting ring 404 is tightly engaged inside the mounting arc groove 403. A connecting arc-shaped top block 405 is fixedly installed at the top center of the plastic connecting ring 404. A lifting top ring 406 is slidably engaged inside the top of the connecting arc top block 405. A binding rubber strip 407 is tightly wrapped around the bottom inner side of the plastic connecting ring 404. A gap is left between the outer side of the lifting top ring 406 and the top slot of the connecting arc top block 405. The outer side of the binding rubber strip 407 is tightly wrapped with the plastic connecting ring 404. The outer sides of the connecting rings 404 are flush with each other. The double-layer structure composed of the inner rubber protective layer 401 and the outer rubber protective layer 402 can form multiple protections on the outside of the power cable to improve the overall protection performance of the cable. The plastic connecting rings 404 are installed on the outside of the cable by installing the arc groove 403 in conjunction with the binding rubber tape 407. The lifting top ring 406 is connected to the top of the cable by connecting the arc-shaped top block 405. The top of the cable is lifted by passing the external steel cable through the top of the lifting top ring 406, thereby realizing the distribution of the traction force on the cable end connection, effectively preventing the cable from deforming and falling off at the connection after long-term use, and effectively improving the overall service life of the cable.

[0038] The inner layer 3 of the rubber bundle is equipped with an internal support and heat dissipation mechanism 5.

[0039] The internal support heat dissipation mechanism 5 includes a central connecting strip 501, an elastic bending rubber block 502, a fan-shaped filling block 503, a connecting fan-shaped rubber strip 504, and a heat-conducting rectangular sheet 505.

[0040] A central connecting strip 501 is equidistantly arranged in the middle of the inner side of the inner layer 3 of the rubber bundle. An elastically bent rubber block 502 is fixedly connected to the end of the central connecting strip 501. A fan-shaped filler block 503 is bonded to the side of the central connecting strip 501 at the gap between the inner rubber insulating protective layers 2. A connecting fan-shaped rubber strip 504 is fixedly connected to the end of the fan-shaped filler block 503. Heat-conducting rectangular plates 505 are equidistantly inserted and installed on the outer side of the fan-shaped filler block 503. The ends of the central connecting strip 501 are connected by the elastically bent rubber block 502, and the ends of the fan-shaped filler blocks 503 are connected by the connecting fan-shaped rubber strip 504. The heat-conducting rectangular plates 505 are... The outer side is tightly fitted to the inner wall of the inner layer 3 of the rubber bundle. The fan-shaped filler block 503 is installed inside the inner layer 3 of the rubber bundle through the central connecting strip 501. The central connecting strip 501 and the fan-shaped filler block 503 form an isolation support for the inner rubber insulation protective layer 2 to prevent the central power transmission conductor 1 from shifting during cable use. The flexible bending rubber block 502 and the connecting fan-shaped rubber strip 504 increase the flexibility of the internal structure of the cable to ensure that the cable can be flexibly bent during use. The heat-conducting rectangular sheet 505 conducts the heat inside the cable to the outside to improve the overall heat dissipation performance of the cable.

[0041] An external auxiliary marking mechanism 6 is provided on the outer side of both the inner rubber protective layer 401 and the outer rubber protective layer 402.

[0042] The external auxiliary marking mechanism 6 includes an arc-shaped mounting groove 601, a connecting silicone strip 602, an auxiliary marking reflective strip 603, and a filling adhesive strip 604;

[0043] The inner rubber protective layer 401 and the outer rubber protective layer 402 are provided with equally spaced arc-shaped grooves 601 along the circumferential direction. A connecting silicone strip 602 is bonded inside the arc-shaped groove 601. An auxiliary marking reflective strip 603 is bonded at equal intervals on the outer side of the connecting silicone strip 602. A filling strip 604 is bonded between the side of the connecting silicone strip 602 and the end of the auxiliary marking reflective strip 603. The outer side of the auxiliary marking reflective strip 603 is flush with the outer side of the outer rubber protective layer 402. The outer side of the filling strip 604 is tightly fitted with the outer side of the plastic connecting ring 404. The connecting silicone strip 602 is installed on the outside of the cable through the arc-shaped groove 601. The gap at the end of the auxiliary marking reflective strip 603 is filled by the filling strip 604 to improve the stability of the installation of the auxiliary marking reflective strip 603. The reflective characteristics of the auxiliary marking reflective strip 603 allow maintenance personnel to quickly determine the cable route with a flashlight, thereby effectively improving the overall ease of use of the cable.

[0044] The working principle and usage process of this utility model: In the actual application of this utility model, when a power cable is needed, the two ends of the central transmission conductor 1 need to be connected to the appropriate positions first, and the outer side of the central transmission conductor 1 is insulated and protected by the inner rubber insulation protective layer 2. At the same time, the inner rubber bundled inner layer 3 is used to bundle and protect the inner rubber insulation protective layer 2. Through the double-layer structure composed of the inner rubber protective layer 401 and the outer rubber protective layer 402, multiple protections can be formed on the outer side of the power cable to improve the overall protection performance of the cable.

[0045] Then, by installing the arc groove 403 in conjunction with the binding rubber strip 407, the plastic connecting ring 404 is installed on the outside of the cable, and the lifting top ring 406 is connected to the top of the cable by connecting the arc top block 405. The top of the cable is then lifted by passing an external steel cable through the top of the lifting top ring 406, thereby distributing the traction force at the cable end connection, effectively preventing the cable from deforming and falling off at the connection after long-term use, and effectively improving the overall service life of the cable.

[0046] When auxiliary heat dissipation is required inside the cable, the fan-shaped filler block 503 is installed inside the inner layer 3 of the rubber bundle through the central connecting strip 501. The central connecting strip 501 and the fan-shaped filler block 503 form an isolation support for the inner rubber insulation protective layer 2 to prevent the central transmission conductor 1 from shifting during cable use. The flexible bending rubber block 502 and the connecting fan-shaped rubber strip 504 increase the flexibility of the internal structure of the cable to ensure that the cable can be flexibly bent during use. The heat-conducting rectangular sheet 505 conducts the heat inside the cable to the outside to improve the overall heat dissipation performance of the cable.

[0047] When auxiliary marking is required on the outside of the cable, the connecting silicone strip 602 is installed on the outside of the cable by installing the arc groove 601, and the gap at the end of the auxiliary marking reflective strip 603 is filled by the filling strip 604 to improve the stability of the installation of the auxiliary marking reflective strip 603. The reflective characteristics of the auxiliary marking reflective strip 603 allow maintenance personnel to quickly determine the cable route with a flashlight, thereby effectively improving the overall ease of use of the cable.

[0048] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A composite power transmission cable, comprising a central power transmission conductor (1), characterized in that: The outer side of the central power transmission conductor (1) is tightly covered with an inner rubber insulation protective layer (2), and the outer side of multiple inner rubber insulation protective layers (2) is covered with a rubber bundle inner layer (3). The inner layer (3) of the rubber bundle is provided with an external snap-fit ​​lifting mechanism (4); The external snap-fit ​​hoisting mechanism (4) includes a rubber protective inner layer (401), a rubber protective outer layer (402), an installation arc groove (403), a plastic connecting snap ring (404), a connecting arc-shaped top block (405), a hoisting top ring (406), and a binding rubber strap (407). The rubber bundle inner layer (3) is tightly wrapped with a rubber protective inner layer (401) on the outside. The rubber protective inner layer (401) is tightly wrapped with a rubber protective outer layer (402) on the outside. The rubber protective outer layer (402) is provided with an axially equidistant and uniformly spaced installation arc groove (403) on the outside. The installation arc groove (403) is tightly engaged with a plastic connecting ring (404). A connecting arc-shaped top block (405) is fixedly installed at the top center of the plastic connecting ring (404). A lifting top ring (406) is slidably engaged with the top of the connecting arc-shaped top block (405). The bottom of the inner side of the plastic connecting ring (404) is tightly wrapped with a bundle rubber strip (407).

2. The composite power transmission cable according to claim 1, characterized in that, A gap is left between the outer side of the hoisting top ring (406) and the top slot of the connecting arc-shaped top block (405), and the outer side of the binding rubber strip (407) and the outer side of the plastic connecting ring (404) are flush with each other.

3. The composite power transmission cable according to claim 1, characterized in that, The inner layer (3) of the rubber bundle is provided with an internal support heat dissipation mechanism (5); The internal support heat dissipation mechanism (5) includes a central connecting strip (501), an elastic bending rubber block (502), a fan-shaped filling block (503), a connecting fan-shaped rubber strip (504), and a heat-conducting rectangular sheet (505). A central connecting strip (501) is equidistantly arranged in the middle of the inner side of the inner layer (3) of the rubber bundle. An elastic bending rubber block (502) is fixedly connected to the end of the central connecting strip (501). A fan-shaped filling block (503) is bonded to the side of the central connecting strip (501) at the gap between the inner rubber insulating protective layer (2). A connecting fan-shaped rubber strip (504) is fixedly connected to the end of the fan-shaped filling block (503). A heat-conducting rectangular sheet (505) is equidistantly inserted on the outer side of the fan-shaped filling block (503).

4. A composite power transmission cable according to claim 3, characterized in that, The ends of the central connecting strip (501) are connected by elastically bent rubber blocks (502), the ends of the fan-shaped filling blocks (503) are connected by connecting fan-shaped rubber strips (504), and the outer side of the heat-conducting rectangular sheet (505) is tightly fitted with the inner wall of the rubber bundle inner layer (3).

5. A composite power transmission cable according to claim 1, characterized in that, An external auxiliary marking mechanism (6) is provided on the outer side of the inner rubber protective layer (401) and the outer rubber protective layer (402). The external auxiliary marking mechanism (6) includes an installation arc groove (601), a connecting silicone strip (602), an auxiliary marking reflective strip (603), and a filling adhesive strip (604). The rubber protective inner layer (401) and the rubber protective outer layer (402) are provided with equally spaced arc-shaped grooves (601) along the circumferential direction. A connecting silicone strip (602) is bonded inside the mounting arc-shaped groove (601). An auxiliary marking reflective strip (603) is bonded at equal intervals on the outside of the connecting silicone strip (602). A filling strip (604) is bonded between the side of the connecting silicone strip (602) and the end of the auxiliary marking reflective strip (603).

6. A composite power transmission cable according to claim 5, characterized in that, The outer side of the auxiliary marking reflective strip (603) is flush with the outer side of the rubber protective outer layer (402), and the outer side of the filling strip (604) is tightly fitted with the outer side of the plastic connecting ring (404).

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