A 6kV to 35kV aluminum alloy conductor cross-linked polyethylene insulated power cable

Abstract

The present invention relates to the technical field of power cables, and proposes a 6kV to 35kV aluminum alloy conductor cross-linked polyethylene insulated power cable, comprising a cable body, wherein the cable body comprises a plurality of conductors, a filling layer is provided between the plurality of conductors, a wrapping layer is provided on the outside of the filling layer, an armor layer is provided on the outside of the wrapping layer, an outer sheath is provided on the outside of the armor layer, and an extruded lining layer, a wiring assembly, a separating assembly and a heat shrinkable sheath are provided. The extruded lining layer is provided on the outside of the wrapping layer, a wiring assembly is provided at the butt joint position of each two cable bodies, the separating assembly is installed on the outside of the wiring assembly, and a heat shrinkable sheath is provided between the outer sheaths of the two cable bodies. The above technical solution solves the problem in the prior art that, during the process of butt jointing the cables, the cable joints are susceptible to mechanical damage due to the extension or external force at the cable joints.

Description

Technical Field

[0001] The present invention relates to the technical field of power cables, and in particular to a 6kV to 35kV aluminum alloy conductor cross-linked polyethylene insulated power cable. Background Art

[0002] 6kV to 35kV cross-linked polyethylene insulated power cables are widely used in various power transmission scenarios due to their excellent performance. They have high heat resistance and durability. The allowable long-term operating temperature of the conductor can reach 90 degrees Celsius, and the maximum temperature during short circuit does not exceed 250 degrees Celsius. They are suitable for transmission and distribution lines with a rated voltage of 3.6 / 6kV to 26 / 35kV at the industrial frequency, and are used to distribute electric energy.

[0003] Since aluminum alloy conductors have good corrosion resistance, high flexibility and strong ductility, these properties help cables to be laid and maintained in complex environments. Therefore, 6kV to 35kV aluminum alloy conductor cross-linked polyethylene insulated power cables are generally selected for installation in complex environments such as coal mines. Due to the complex storage conditions of my country's coal resources and frequent geological disasters in coal mines, China is a country with a high incidence of coal mine accidents in the world. The safety production situation is still very severe, and it is necessary to improve the safety of the cable itself.

[0004] During the construction, installation and maintenance process, if the cable is accidentally damaged or the mechanical traction is too large and the cable is pulled, the cable joints may be subjected to mechanical damage such as stretching and squeezing, increasing the risk of mechanical damage and damaging the cable joints. After installation, if construction or disasters are taking place on or near the cable path, the cable may be directly damaged by external forces, making the cable connection parts prone to problems. Summary of the Invention

[0005] The present invention proposes a 6kV to 35kV aluminum alloy conductor cross-linked polyethylene insulated power cable, which solves the problem in the prior art that the cable joints are easily damaged by mechanical damage due to stretching or external forces during the cable docking process.

[0006] The technical solutions of the present invention are as follows:

[0007] A 6kV to 35kV aluminum alloy conductor cross-linked polyethylene insulated power cable, comprising a cable body, the cable body comprising a plurality of conductors, a filling layer disposed between the conductors, a wrapping layer disposed externally of the filling layer, an armor layer disposed externally of the wrapping layer, an outer sheath disposed externally of the armor layer, and further comprising:

[0008] An extruded lining layer is provided on the outside of the wrapping layer, and the armor layer is provided on the outside of the extruded lining layer;

[0009] A wiring assembly is provided at the position where each two cable bodies are connected, and is used to connect the wires of the two cable bodies;

[0010] A separation component, the separation component is installed outside the wiring component and is used to separate the connection positions of the plurality of wires;

[0011] a stabilizing assembly, the stabilizing assembly being mounted outside the partition assembly and being used to maintain the connection positions of the plurality of wires;

[0012] A heat shrinkable sheath is provided between the outer sheaths of the two cable bodies;

[0013] A buffer component is installed between the heat shrinkable sheath and the stabilizing component to absorb external vibrations.

[0014] Based on the above solution, the wiring assembly includes:

[0015] A wiring terminal is provided between the plurality of wires between the two cable bodies;

[0016] Wiring bolts, each of the wiring terminals is threadedly provided with the wiring bolts;

[0017] A wiring sheath is installed on each of the wiring terminals.

[0018] On the basis of the above solution, the partition assembly includes:

[0019] A hose is provided between the plurality of wiring sheaths and abuts against the plurality of wiring sheaths;

[0020] The binding portion is installed between the plurality of wiring sheaths and is used to fix the relative positions between the plurality of wiring sheaths.

[0021] On the basis of the above solution, the binding part includes:

[0022] Two binding straps are provided, the two binding straps are symmetrical and wrapped around and fixed on the plurality of wiring sheaths, and the inner sides of the two binding straps are in contact with the plurality of wiring sheaths;

[0023] A mounting hole, one end of each of the two binding straps is provided with the mounting hole;

[0024] A fixing bolt is threadedly provided inside the two mounting holes.

[0025] In addition to the above solutions, it also includes:

[0026] An installation slot is provided at the other end of the two binding straps;

[0027] Positioning grooves, a plurality of positioning grooves are symmetrically arranged at equal distances inside the two installation grooves;

[0028] Wherein, the fixing bolt is adapted to the positioning groove;

[0029] The binding sheath is fixedly installed on the outside of the plurality of wiring sheaths, and the binding belt is located inside the binding sheath.

[0030] Based on the above solution, the stabilizing component includes:

[0031] An arc-shaped frame is provided between each two wiring sheaths, the arc-shaped frame is located outside the binding sheaths, and the arc-shaped frame abuts against the binding sheaths;

[0032] The holding portion is wound on the arc frame and is used to fix the position of the arc frame.

[0033] On the basis of the above solution, the holding portion includes:

[0034] Ribs, the retaining portion is composed of a plurality of ribs arranged at equal distances;

[0035] A connecting piece is fixedly installed at an equal distance between every two ribs;

[0036] Binding belts are fixedly arranged at equal distances between the plurality of ribs.

[0037] Based on the above solution, the buffer assembly includes:

[0038] Buffer pads, a plurality of said buffer pads are arranged in a circular shape with equal angles on the outside of the retaining portion, and said buffer pads are located inside the heat shrinkable sheath;

[0039] Insertion slots: a plurality of insertion slots are provided on both sides of each buffer gasket at equal distances; the plurality of insertion slots on both sides of each buffer gasket are staggered with each other, and the insertion slots of two adjacent buffer gaskets are adapted to each other.

[0040] The working principle and beneficial effects of the present invention are:

[0041] 1. In the present invention, the hose can be placed between multiple wiring sheaths, and then the positions of the multiple wiring sheaths are adjusted and the relative positions of the multiple wiring sheaths are fixed. At this time, the hose is deformed. When the cable body is vibrated or impacted, the hose will deform to a certain extent and play a vibration-absorbing role, thereby protecting the connection position between the wires. At the same time, it can also play a certain positioning role for the wiring sheaths, reducing the possibility of damage to the wire connection.

[0042] 2. In the present invention, the tops of the multiple arc-shaped frames outside the binding sheath form an approximate circular shape, fixing the relative positions of the multiple arc-shaped frames. During the use of the cable body, if the cable is affected by impact, vibration, etc., the impact force can be dispersed under the action of the multiple arc-shaped frames, thereby reducing the impact of the impact force on the stability of the cable connection position and improving the ability of the cable connection to resist impact and vibration.

[0043] 3. In the present invention, a cylindrical structure composed of multiple ribs and multiple connecting plates is wrapped around the outside of multiple arc frames, and then bundled with a binding belt. The two ends of the ribs are respectively located at the positions of the armor layers of the two sections of the cable body, thereby improving the stability of the connection. The arc-shaped bending areas at both ends of the ribs further limit the position of the arc frame to avoid displacement during operation. At the same time, the setting of the arc-shaped bending areas at both ends of the ribs can disperse the external impact, further improving the ability of the cable body connection position to resist impact force.

[0044] 4. In the present invention, the plug-in slots at the docking positions of every two adjacent buffer gaskets are adapted so that there is an overlapping area between the two adjacent buffer gaskets. When adjusting the distance between the two adjacent buffer gaskets, the plug-in slots on the two adjacent buffer gaskets do not need to be completely combined together, so that the covering area can be adjusted. After the heat shrinkable sheath is impacted, the buffer gasket will first absorb part of the impact force to reduce the impact on the wire connection position, and the position of the plug-in slot of the buffer gasket also has the ability to absorb the impact force.

[0045] 5. In the present invention, the cooperation of the wiring assembly and the separation assembly not only makes the wire connection more stable, but also can play a certain role in dispersing the force when the cable body is impacted, thereby improving the stability of the connection. The setting of the stabilizing assembly and the buffer assembly can not only absorb external vibrations to avoid affecting the stability of the connection position, but also reduce the risk of mechanical damage such as stretching and extrusion at the cable joints. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0048] Figure 2 Schematic diagram of the planar structure of the cable body in the present invention;

[0049] Figure 3 It is a schematic diagram of a three-dimensional structure of a cross-section in the present invention;

[0050] Figure 4 It is a cross-sectional structural diagram of the connection assembly and the separation assembly in the present invention;

[0051] Figure 5 Schematic diagram of the structure of the binding portion of the present invention;

[0052] Figure 6 This is a schematic structural diagram of the unfolded binding portion of the present invention;

[0053] Figure 7 This is a schematic diagram of the structure of the separation component and the stabilization component in the present invention;

[0054] Figure 8 Schematic diagram of the structure of the stabilizing component in the present invention;

[0055] Figure 9 This is a schematic structural diagram of the expanded retaining portion of the present invention;

[0056] Figure 10 Schematic diagram of the structure of the buffer assembly in the present invention.

[0057] In the figure: 1. Wire; 2. Filling layer; 3. Wrapping layer; 4. Armor layer; 5. Outer sheath; 6. Extruded lining layer; 7. Heat shrink sheath; 8. Terminal block; 9. Terminal bolt; 10. Terminal sheath; 11. Hose; 12. Binding belt; 13. Mounting hole; 14. Fixing bolt; 15. Mounting slot; 16. Positioning slot; 17. Binding sheath; 18. Arc frame; 19. Rib; 20. Connecting piece; 21. Binding belt; 22. Buffer gasket; 23. Connecting slot. DETAILED DESCRIPTION

[0058] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0059] like Figures 1 to 10As shown, this embodiment proposes a 6kV to 35kV aluminum alloy conductor cross-linked polyethylene insulated power cable, including a cable body, the cable body including multiple conductors 1, a filling layer 2 is arranged between the multiple conductors 1, the filling layer 2 is covered with a wrapping layer 3 on the outside, the wrapping layer 3 is provided with an armor layer 4 on the outside, the armor layer 4 is covered with an outer sheath 5 on the outside, and also includes an extruded lining 6, a wiring assembly, a separation assembly, a stabilization assembly, a heat shrinkable sheath 7 and a buffer assembly, the wrapping layer 3 is covered with an extruded lining 6 on the outside, the armor layer 4 is covered on the outside of the extruded lining 6, a wiring assembly is provided at the docking position of each two cable bodies for connecting the conductors 1 of the two cable bodies, the wiring assembly includes a wiring terminal 8, a wiring bolt 9 and a wiring sheath 10, a wiring terminal 8 is provided between the multiple conductors 1 between the two cable bodies, each wiring terminal 8 is threaded with a wiring bolt 9, and each wiring terminal 8 is covered and installed with a wiring sheath 10.

[0060] Specifically, during the construction of the cable, it is necessary to dock the two cable bodies. First, the docking position of the two cable sections is broken and processed to expose multiple wires 1 at the docking position of the two cable sections. Then, the insulation layer on the wire 1 is broken and processed respectively to expose the conductor part of the wire 1. The length of the exposed conductor is adapted to the size of the corresponding terminal 8. Then, the terminal 8 is sleeved on the conductor of one of the wires 1, and the other end of the terminal 8 is sleeved on the conductor of the corresponding wire 1 on the other cable body. Through the setting of the terminal bolt 9, the terminal bolt 9 is screwed into the position of the assembly bolt on the terminal 8, so that the conductor and the terminal 8 are connected as a whole. Then Put the wiring sheath 10 on the wiring terminal 8, bake and heat it to shrink the wiring sheath 10 until the wiring sheath 10 is covered on the wiring terminal 8 and the inner sides of the two ends of the wiring sheath 10 are in contact with the insulation layer of the wire 1. Repeat this step to connect the multiple wires 1 of the two cables one by one, then place the partition assembly between the multiple wiring sheaths 10 and fix the positions of the multiple wiring sheaths 10 to fix the positions of the multiple wiring sheaths 10, then install the stabilizing assembly and the buffer assembly in sequence, and finally put the heat shrink sheath 7 on the buffer assembly, bake and heat it to shrink it, and cover it on the buffer assembly to complete the construction.

[0061] It should be added that, since the joints of the cables are easily subject to mechanical damage such as stretching and extrusion during the construction, installation and maintenance of the cables, the risk of mechanical damage is increased. By setting the armor layer 4 and the extruded lining layer 6 between the armor layer 4 and the wrapping layer 3, the strength and toughness of the cable itself can be improved. In addition, the outer sheath 5 and the extruded lining layer 6 are both made of cross-linked polyethylene, which has a mesh three-dimensional structure. This structural change gives the material higher heat resistance and mechanical strength. Due to the cross-linking reaction, polyethylene is transformed from a thermoplastic material to a thermosetting material, which means that it does not melt when heated, but maintains its shape and performance, thereby enhancing the insulation, heat resistance, mechanical properties and electrical properties of the cable.

[0062] like Figures 4 to 7 As shown, the partition assembly is installed outside the wiring assembly and is used to separate the connection positions of multiple wires 1. The partition assembly includes a hose 11 and a binding portion. The hose 11 is arranged between the multiple wiring sheaths 10. The hose 11 abuts against the multiple wiring sheaths 10. The binding portion is installed between the multiple wiring sheaths 10 and is used to fix the relative positions between the multiple wiring sheaths 10.

[0063] Specifically, after the multiple wires 1 of the two sections of the cable are connected one by one through the terminal blocks 8, the hose 11 can be placed between the multiple wiring sheaths 10, and then the positions of the multiple wiring sheaths 10 are adjusted. At this time, the hose 11 is deformed, and then the relative positions of the multiple wiring sheaths 10 can be fixed by setting the binding part. When the cable body is vibrated or impacted, the hose 11 will deform to a certain extent and play a vibration-absorbing role, thereby protecting the connection position between the wires 1, and at the same time it can also play a certain positioning role for the wiring sheaths 10.

[0064] The above, such as Figure 5 、 Figure 6 As shown, the binding part includes a binding strap 12, a mounting hole 13 and a fixing bolt 14. Two binding straps 12 are provided, and the two binding straps 12 are symmetrical and wrapped and fixed on multiple wiring sheaths 10. The inner sides of the two binding straps 12 are in contact with multiple wiring sheaths 10. One end of the two binding straps 12 is provided with a mounting hole 13, and the inside of the two mounting holes 13 is threaded with a fixing bolt 14. It also includes a mounting groove 15, a positioning groove 16 and a binding sheath 17. The other end of the two binding straps 12 is provided with a mounting groove 15, and the inside of the two mounting grooves 15 is symmetrically provided with multiple positioning grooves 16 at equal distances, wherein the fixing bolt 14 is adapted to the positioning groove 16, and the binding sheath 17 is fixedly installed on the outside of multiple wiring sheaths 10, and the binding strap 12 is located inside the binding sheath 17.

[0065] Specifically, when the hose 11 is placed between multiple wiring sheaths 10 and the positions of the multiple wiring sheaths 10 are adjusted, the relative positions of the multiple wiring sheaths 10 can be fixed. At this time, the corresponding binding strap 12 is taken out and the binding strap 12 is wrapped around the outside of the multiple wiring sheaths 10. At this time, the mounting hole 13 at one end of the binding strap 12 corresponds to one of the positioning slots 16 on the mounting slot 15 at the other end of the binding strap 12. At this time, the corresponding fixing bolt 14 is screwed into the mounting hole 13 and contacts the corresponding positioning slot 16 to fix the relative positions of the multiple wiring sheaths 10. Repeat this step and install another binding strap 12 between the multiple wiring sheaths 10. Then, the binding sheath 17 is moved between the multiple wiring sheaths 10. At this time, the two binding straps 12 are located inside the binding sheath 17. Then, the binding sheath 17 is baked and heated to shrink the binding sheath 17 and finally wrapped around the multiple wiring sheaths 10 and the binding strap 12.

[0066] like Figure 7 、 Figure 8 As shown, the stabilizing component is installed outside the partition component and is used to maintain the connection position of multiple wires 1. The stabilizing component includes an arc frame 18 and a retaining portion. An arc frame 18 is provided between every two wiring sheaths 10. The arc frame 18 is located outside the binding sheath 17. The arc frame 18 is in contact with the binding sheath 17. A retaining portion is rolled on the arc frame 18 for fixing the position of the arc frame 18.

[0067] Specifically, after the binding sheath 17 is wrapped, an arc frame 18 is placed between every two wiring sheaths 10. The bottom of the arc frame 18 is in contact with the binding sheath 17, and the tops of the multiple arc frames 18 form an approximate circular shape. At this time, the multiple arc frames 18 can be fixed by setting the retaining part. During the use of the cable body, if the cable is affected by impact, vibration, etc., the impact force can be dispersed under the action of multiple arc frames 18, thereby reducing the impact of the impact force on the stability of the cable connection position.

[0068] The above, such as Figure 9 As shown, the retaining portion includes ribs 19, connecting pieces 20 and binding belts 21. The retaining portion is composed of multiple ribs 19 arranged at equal distances. A connecting piece 20 is fixedly installed at equal distances between every two ribs 19, and multiple binding belts 21 are fixedly installed at equal distances between multiple ribs 19.

[0069] Specifically, the holding portion is composed of ribs 19 and connecting pieces 20. After the rear arc frame 18 is placed so that the tops of the multiple arc frames 18 form an approximate circular shape, they need to be bundled. At this time, the ribs 19 and the connecting pieces 20 are in the shape of a circle. Figure 9In the state shown, when in use, first bend both ends of the rib 19 according to the size of the arc frame 18, and bend both ends of the rib 19 into Figure 9 In the state shown, the connecting piece 20 is then bent, and the connecting piece 20 is bent into an arc shape until the rib 19 and the connecting piece 20 are bent into a cylindrical structure and wrapped around the outside of multiple arc frames 18. Then, the binding belt 21 is used to bundle them. The middle part of the rib 19 is first bundled, and then the binding belt 21 is tightened at the arc position of the rib 19. Finally, the two ends of the rib 19 are tightened. The two ends of the rib 19 are respectively located at the positions of the armor layers 4 of the two sections of the cable body, thereby improving the stability of the connection. After being tied to multiple arc frames 18 by the binding belt 21, the position of the arc frame 18 is further restricted by the arc-shaped bending areas at both ends of the rib 19 to avoid displacement during operation. At the same time, the arc-shaped bending areas at both ends of the rib 19 can be set to disperse the impact when it is subjected to external impact, thereby achieving a protective effect.

[0070] like Figure 10 As shown, a heat shrinkable sheath 7 is provided between the outer sheaths 5 of the two cable bodies, and a buffer component is installed between the heat shrinkable sheath 7 and the stabilizing component to absorb external vibrations. The buffer component includes a buffer gasket 22 and a plug-in slot 23. A plurality of buffer gaskets 22 are provided at equal angles in a circular shape on the outside of the retaining portion. The buffer gasket 22 is located inside the heat shrinkable sheath 7. A plurality of plug-in slots 23 are provided at equal distances on both sides of each buffer gasket 22. The plurality of plug-in slots 23 on both sides of each buffer gasket 22 are staggered with each other, and the plug-in slots 23 of two adjacent buffer gaskets 22 are adapted to each other.

[0071] Specifically, after the ribs 19 and the connecting pieces 20 are bundled, a buffer gasket 22 needs to be set. The buffer gasket 22 is an arc-shaped structure. A plurality of buffer gaskets 22 are arranged at equal angles in a circle to form a structure similar to a cylinder. A plurality of plug-in slots 23 are provided on both sides of each buffer gasket 22, and the plug-in slots 23 at the docking positions of each two adjacent buffer gaskets 22 are adapted so that an overlapping area appears between the two adjacent buffer gaskets 22. Then, the plurality of buffer gaskets 22 are fitted on the ribs 19 and the connecting pieces 20. Due to the setting of the plug-in slots 23, when the ribs 19 and the connecting pieces 20 are connected, the buffer gaskets 22 are in a state of being overlapped. When the size of the tubular structure composed of the buffer gaskets 22 is larger than the internal size of the tubular structure composed of the buffer gaskets 22, the distance between the two adjacent buffer gaskets 22 is appropriately adjusted so that the plug-in slots 23 on the two adjacent buffer gaskets 22 are not completely combined together, and the covering area can be adjusted to facilitate the covering of the ribs 19. After the heat shrinkable sheath 7 is impacted, the buffer gasket 22 will first absorb part of the impact force to reduce the impact on the connection position of the wire 1, and the position of the plug-in slot 23 of the buffer gasket 22 also has the ability to absorb the impact force.

[0072] In this embodiment, during the construction of the cable, it is necessary to dock the two cable bodies. First, the docking position of the two cable sections is broken and the multiple wires 1 at the docking position of the two cable sections are exposed. Then, the insulation layer on the wire 1 is broken and the conductor part of the wire 1 is exposed. The length of the exposed conductor is adapted to the size of the corresponding terminal 8. Then, the terminal 8 is sleeved on the conductor of one of the wires 1, and the other end of the terminal 8 is sleeved on the conductor of the corresponding wire 1 on the other cable body. Through the setting of the terminal bolt 9, the terminal bolt 9 is screwed into the position of the assembly bolt on the terminal 8, so that the conductor and the terminal 8 are connected as a whole. Then, the terminal sheath 10 is sleeved on the terminal 8, and it is baked and heated to shrink the terminal sheath 10 until the terminal sheath 10 is covered on the terminal 8 and the inner sides of the two ends of the terminal sheath 10 are in contact with the insulation layer of the wire 1. Repeat this step to connect the multiple wires 1 of the two cables one by one.

[0073] Place the hose 11 between multiple wiring sheaths 10, and then adjust the positions of multiple wiring sheaths 10. At this time, the hose 11 is deformed, and the relative positions of the multiple wiring sheaths 10 can be fixed. At this time, take out the corresponding binding belt 12 and wrap the binding belt 12 around the outside of the multiple wiring sheaths 10. At this time, the mounting hole 13 at one end of the binding belt 12 corresponds to one of the positioning grooves 16 on the mounting groove 15 at the other end of the binding belt 12. At this time, the corresponding fixing bolt 14 can be screwed into the mounting hole 13 and contacted with the corresponding positioning groove 16 to fix the relative positions of the multiple wiring sheaths 10. Repeat this step and put another binding belt 12 can also be installed between multiple wiring sheaths 10, and then the binding sheath 17 is moved between the multiple wiring sheaths 10. At this time, the two binding straps 12 are located inside the binding sheath 17, and then the binding sheath 17 is baked and heated to shrink the binding sheath 17, and finally wrapped around the multiple wiring sheaths 10 and the binding strap 12 to fix the relative positions of the multiple wiring sheaths 10. At the same time, when the cable body is vibrated or impacted, the hose 11 will deform to a certain extent and play a vibration-absorbing role, thereby protecting the connection position between the wires 1, and at the same time it can also play a certain positioning role for the wiring sheath 10.

[0074] After the binding sheath 17 is wrapped, an arc frame 18 is placed between each two wiring sheaths 10. The bottom of the arc frame 18 is in contact with the binding sheath 17. After the tops of the multiple arc frames 18 form an approximate circular shape, they need to be bundled. At this time, the two ends of the ribs 19 are bent into an arc shape according to the size of the arc frame 18, and then the connecting piece 20 is bent and bent into an arc shape until the ribs 19 and the connecting piece 20 are bent into a cylindrical structure and wrapped around the outside of the multiple arc frames 18. Then, the binding belt 21 is used to bundle them. The middle part of the rib 19 is first bundled. Tie, then tighten the binding belt 21 at the arc position of the rib 19, and finally tighten at both ends of the rib 19. The two ends of the rib 19 are respectively located at the position of the armor layer 4 of the two sections of the cable body, thereby improving the stability of the connection. After being tied to multiple arc frames 18 through the binding belt 21, the arc-shaped bending area at both ends of the rib 19 further limits the position of the arc frame 18 to avoid displacement during operation. At the same time, the setting of the arc-shaped bending area at both ends of the rib 19 can disperse the impact when it is subjected to external impact, thereby reducing the influence of the impact force on the stability of the cable connection position and playing a protective effect.

[0075] Then, a buffer gasket 22 is set. The buffer gasket 22 is an arc-shaped structure. A plurality of buffer gaskets 22 are arranged at equal angles in a circle to form a structure similar to a cylinder. A plurality of plug-in slots 23 are set on both sides of each buffer gasket 22, and the plug-in slots 23 at the docking position of each two adjacent buffer gaskets 22 are adapted to make an overlapping area appear between the two adjacent buffer gaskets 22. Then, a plurality of buffer gaskets 22 are set on the rib 19 and the connecting piece 20. Due to the setting of the plug-in slots 23, when the size of the cylindrical structure composed of the rib 19 and the buffer gasket 22 is larger than the internal size of the cylindrical structure composed of the buffer gasket 22, When the heat shrink sleeve 7 is impacted, the buffer gasket 22 will first absorb part of the impact force to reduce the impact on the connection position of the wire 1, and the position of the plug-in slot 23 of the buffer gasket 22 also has the ability to absorb the impact force. Finally, the heat shrink sleeve 7 is put on the buffer component, and it is baked and heated to shrink and covered on the buffer component to complete the construction.

[0076] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A 6kV to 35kV aluminum alloy conductor cross-linked polyethylene insulated power cable, comprising a cable body, wherein the cable body comprises a plurality of conductors (1), a filling layer (2) is provided between the plurality of conductors (1), the filling layer (2) is externally coated with a wrapping layer (3), the wrapping layer (3) is externally coated with an armor layer (4), and the armor layer (4) is externally coated with an outer sheath (5), characterized in that: Also includes: An extruded lining layer (6), the outer portion of the wrapping layer (3) is covered with the extruded lining layer (6), and the armor layer (4) is covered and arranged on the outer portion of the extruded lining layer (6); A wiring assembly is provided at each location where two of the cable bodies are connected, and is used to connect the conductors (1) of the two cable bodies; The wiring assembly includes: A wiring terminal (8), each of the plurality of wires (1) between the two cable bodies being provided with the wiring terminal (8); A wiring bolt (9), each of the wiring terminals (8) being threadedly provided with the wiring bolt (9); A wiring sheath (10), each of the wiring terminals (8) being covered and mounted with the wiring sheath (10); A separation component, the separation component being mounted outside the wiring component and used to separate the connection positions of a plurality of the wires (1); The partition assembly comprises: A binding portion, the binding portion being installed between the plurality of wiring sheaths (10) and used for fixing the relative positions between the plurality of wiring sheaths (10); The binding portion includes: A binding belt (12), wherein two binding belts (12) are provided, and the two binding belts (12) are symmetrical and wound and fixed on the plurality of wiring sheaths (10), and the inner sides of the two binding belts (12) are in contact with the plurality of wiring sheaths (10); A binding sheath (17), wherein the binding sheath (17) is fixedly mounted on the outside of the plurality of wiring sheaths (10), and the binding belt (12) is located inside the binding sheath (17); A stabilizing component, the stabilizing component being mounted outside the separating component and being used to maintain the connection positions of the plurality of wires (1); The stabilizing assembly comprises: An arc-shaped frame (18), wherein the arc-shaped frame (18) is provided between each two wiring sheaths (10), the arc-shaped frame (18) is located outside the binding sheath (17), and the arc-shaped frame (18) abuts against the binding sheath (17); A retaining portion, the retaining portion being rolled onto the arc-shaped frame (18) and being used to fix the position of the arc-shaped frame (18); A heat shrinkable sheath (7) is provided between the outer sheaths (5) of the two cable bodies; A buffer component, the buffer component being installed between the heat shrinkable sheath (7) and the stabilizing component and being used to absorb external vibrations; The buffer assembly comprises: Buffer gaskets (22), a plurality of the buffer gaskets (22) are arranged at equal angles in a circumferential shape on the outside of the retaining portion, and the buffer gaskets (22) are located inside the heat shrinkable sheath (7); Insertion slots (23), a plurality of the insertion slots (23) are evenly spaced on both sides of each buffer gasket (22), the plurality of the insertion slots (23) on both sides of each buffer gasket (22) are staggered with each other, and the insertion slots (23) of two adjacent buffer gaskets (22) are adapted to each other.

2. The 6kV to 35kV aluminum alloy conductor cross-linked polyethylene insulated power cable according to claim 1, characterized in that: The partition assembly comprises: A hose (11) is provided between the plurality of wiring sheaths (10), and the hose (11) abuts against the plurality of wiring sheaths (10).

3. The 6kV to 35kV aluminum alloy conductor cross-linked polyethylene insulated power cable according to claim 2, characterized in that: The binding portion further comprises: A mounting hole (13), one end of each of the two binding straps (12) is provided with the mounting hole (13); A fixing bolt (14) is provided in the interior of each of the two mounting holes (13) with the fixing bolt (14) threadedly provided therein.

4. The 6kV to 35kV aluminum alloy conductor cross-linked polyethylene insulated power cable according to claim 3, characterized in that: Also includes: A mounting groove (15), wherein the other ends of the two binding straps (12) are provided with the mounting groove (15); Positioning grooves (16), a plurality of positioning grooves (16) are symmetrically arranged at equal distances inside the two mounting grooves (15); Wherein, the fixing bolt (14) is adapted to the positioning groove (16).

5. The 6kV to 35kV aluminum alloy conductor cross-linked polyethylene insulated power cable according to claim 4, characterized in that: The holding portion includes: ribs (19), the retaining portion being composed of a plurality of ribs (19) arranged at equal distances; A connecting piece (20), wherein the connecting piece (20) is fixedly installed at an equal distance between every two of the ribs (19); Binding belts (21), wherein a plurality of the binding belts (21) are fixedly arranged at equal distances between the plurality of ribs (19).

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