Lightning-proof overhead insulated wire for power line

Abstract

The invention discloses a lightning-proof overhead insulated wire for a power line, and relates to the technical field of overhead insulated wires, and the lightning-proof overhead insulated wire comprises a central conductor, the central conductor is sleeved with an internal insulating layer, the internal insulating layer is coated with a rubber protection layer, the outer sides of a plurality of strands of rubber protection layers are jointly coated with a middle bundling layer, and the middle bundling layer is coated with a middle bundling layer. According to the invention, through the mutual cooperation of the two arc-shaped telescopic liquid bags and the components in the arc-shaped telescopic liquid bags, the kinetic energy in the shaking process of the insulated wire is converted into the kinetic energy of the flow of heat-conducting oil in the arc-shaped telescopic liquid bags by utilizing the alternate expansion of the arc-shaped telescopic liquid bags on the two sides; according to the insulated wire, the protection sheath of the insulated wire is effectively prevented from being damaged due to continuous shaking in the use process, lightning stroke caused by direct exposure of the internal conductor of the insulated wire in external air is prevented, the overall protection performance of the insulated wire is effectively improved, and the insulated wire can keep good protection performance after being used for a long time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of overhead insulated conductors, in particular to an overhead insulated conductor for lightning protection of power lines. BACKGROUND

[0002] An overhead insulated conductor is a power transmission conductor erected on an outdoor tower, with an insulating layer wrapped outside the conductor, and its core function is to isolate the external environment (such as air, trees, and rainwater) while achieving power transmission, thereby reducing the risk of electric leakage and short circuit, and it is different from the traditional bare conductor without an insulating layer. For this reason, a lightning protection overhead insulated conductor is disclosed in Chinese Patent No. CN202421039549.7, which sets up a first insulating cover and a second insulating cover that can be assembled, and assembles the first insulating cover and the second insulating cover outside the insulating skin, without the need for special insulating skin, greatly reducing the cost, while still having the function of lightning protection and fracture resistance. However, the overhead insulated conductor is limited by its own structure in the process of use, which causes the outer skin to be damaged after repeated shaking in the process of use, resulting in the direct exposure of the metal conductor inside the overhead insulated conductor to the air, making the overhead insulated conductor vulnerable to lightning damage in the process of use, and thus reducing the use safety of the overhead insulated conductor. SUMMARY

[0003] The present application provides an overhead insulated conductor for lightning protection of power lines, which can effectively solve the problem of the overhead insulated conductor being limited by its own structure in the process of use, which causes the outer skin to be damaged after repeated shaking in the process of use, resulting in the direct exposure of the metal conductor inside the overhead insulated conductor to the air, making the overhead insulated conductor vulnerable to lightning damage in the process of use, and thus reducing the use safety of the overhead insulated conductor.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an overhead insulated conductor for lightning protection of power lines, comprising a center conductor, an internal insulating layer is sleeved outside the center conductor, a rubber protective layer is coated outside the internal insulating layer, a middle layer binding layer is collectively coated outside a plurality of rubber protective layers, and an external rubber isolation layer is coated outside the middle layer binding layer. A self-circulating buffer protection mechanism is provided outside the external rubber isolation layer, which is used to transfer and buffer the shaking of the overhead insulated conductor in the process of use, and adjust the temperature in the buffering process according to the environmental temperature. The self-circulating buffer protection mechanism comprises an arc-shaped mounting box. An arc-shaped mounting box is clamped outside the external rubber isolation layer, and a rectangular mounting side plate is connected to the end of the arc-shaped mounting box. Rubber support arc-shaped blocks are glued to the top and bottom of the inner side of the arc-shaped mounting box. Rectangular liquid guide boxes are embedded in the middle of both sides of the inner side of the arc-shaped mounting box. Arc-shaped telescopic liquid bladders are connected to the ends of the rectangular liquid guide boxes. Telescopic return springs are connected inside the rectangular liquid guide boxes. The top center of the two rectangular liquid guiding boxes is fixedly connected to a top guiding pipe via a guiding valve, and the bottom center of the two rectangular liquid guiding boxes is fixedly connected to a bottom return pipe via a guiding valve.

[0005] Preferably, both the rectangular liquid guiding box and the arc-shaped telescopic liquid bladder are filled with heat-conducting oil, and the two ends of the telescopic reset spring are fixedly connected to the inner walls of the rectangular liquid guiding box and the arc-shaped telescopic liquid bladder, respectively.

[0006] Preferably, the inner arc surface of the rubber support arc block and the arc-shaped telescopic fluid bladder are tightly fitted to the outer side of the outer rubber isolation layer.

[0007] Preferably, an inner ring guide tube is fixedly connected to the middle of one side of the rectangular liquid guide box via a liquid guide valve. An inner ring guide ring is fixedly connected to the end of the inner ring guide tube at the position corresponding to the outer side of the outer rubber isolation layer. An inner ring diffuser axial tube is fixedly connected to one side of the inner ring guide ring at the position corresponding to the outer side of the outer rubber isolation layer via a pipe. The outer ring of the inner ring guide ring and the inner ring of the outer ring guide buffer ring are tightly fitted together. Another rectangular liquid guide box has an outer ring guide tube fixedly connected to the middle of one side via a liquid guide valve. An outer ring guide buffer ring is fixedly connected to the end of the outer ring guide tube at the position corresponding to the outer side of the inner ring guide ring. An outer ring isolation liquid guide tube is fixedly connected to the end of the outer ring guide buffer ring at the position corresponding to the outer side of the inner ring diffusion axial tube. An elastic insulating silicone membrane is wrapped between the outer side of the inner ring diffuser axial tube and the inner side of the outer ring isolation liquid guide tube. The inner ring diffusion axial tube and the outer ring isolation liquid guide tube are fixedly connected to a connecting cavity end ring at their ends. An isolation rubber ring is sleeved on the outer side of the outer rubber isolation layer at the position corresponding to the end of the connecting cavity end ring. The outer ring of the isolation liquid guide tube and the outer side of the connecting cavity end ring are both covered by an external isolation sleeve.

[0008] Preferably, the inner ring diffuser axial tube and the outer ring isolation liquid guide tube are arranged alternately, and the inner walls of both the inner ring diffuser axial tube and the outer ring isolation liquid guide tube are provided with elastic folds.

[0009] Preferably, the elastic insulating silicone membrane is supported by an elastic material, and cavities are provided on both sides of the elastic insulating silicone membrane at positions corresponding to the inner ring diffusion axial tube and the outer ring insulating liquid guide tube.

[0010] Preferably, the inner ring diffuser axial tube and the outer ring isolation liquid guide tube are connected by a connecting cavity end ring, and the inner ring of the outer isolation sleeve is tightly fitted with the outer ring isolation liquid guide tube and the outer side of the connecting cavity end ring.

[0011] Preferably, a dynamic buffer protection mechanism is provided on the outer side of the side rubber isolation layer. The dynamic buffer protection mechanism is used to transfer and convert the kinetic energy on the outer side of the cable to reduce the swaying amplitude of the cable in strong winds. The dynamic buffer protection mechanism includes a central protective rubber sleeve; A central protective rubber sleeve is fitted onto the outer side of the outer rubber isolation layer at the end position corresponding to the isolation rubber ring. Both ends of the central protective rubber sleeve are filled with isolation liquid-conducting buffer sleeves. A central limiting installation groove is provided in the middle of the outer side of the central protective rubber sleeve. A flexible limiting silicone ring is wrapped and bonded to the inner side of the central limiting installation groove. A guide snap ring is snapped into the inner side of the central limiting installation groove at the position corresponding to the outer side of the flexible limiting silicone ring. A rotating guide ring is slidably engaged with the outer side of the guide ring via a guide groove. A counterweight buffer flywheel is slidably engaged with the middle of the outer side of the rotating guide ring. An installation collar is fixedly engaged with the middle of the outer side of the counterweight buffer flywheel. Both sides of the mounting collar are fixedly connected to a connecting rotating frame at equal intervals along the circumferential direction, and a wind guide rectangular plate is fixedly connected to one side of the connecting rotating frame at equal intervals.

[0012] Preferably, the isolation fluid-conducting buffer sleeve is filled with heat-conducting oil, the inner ring of the guide snap ring is tightly fitted with the outer side of the flexible limiting silicone ring, and the side of the end of the guide snap ring is tightly fitted with the inner side of the central limiting mounting groove.

[0013] Preferably, the inner side of the counterweight buffer flywheel is tightly slidably fitted with the guide snap ring, and the edge of the air guide rectangular plate is provided with an arc surface.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a scientific and reasonable structure and is safe and convenient to use. 1. A self-circulating buffer protection mechanism is set up. Through the cooperation between the components inside the outer rubber isolation layer, the overall protection performance of the insulated wire is improved. Through the cooperation between the two arc-shaped telescopic liquid bladders and their internal components, the alternating expansion of the two arc-shaped telescopic liquid bladders converts the kinetic energy of the insulated wire during the shaking process into the kinetic energy of the heat-conducting oil flowing inside the arc-shaped telescopic liquid bladder. The flow of heat-conducting oil provides buffering for the insulated wire, effectively preventing damage to the protective outer sheath at the connection point of the insulated wire due to continuous shaking during use, and preventing the internal conductor of the insulated wire from being directly exposed to the outside air and causing lightning strikes. This effectively improves the overall protection performance of the insulated wire and ensures that the insulated wire can maintain good protection performance after long-term use. The rectangular liquid guide box, the top guide pipe, and the bottom return pipe work together to drive the heat transfer oil to circulate locally within the arc-shaped mounting box, ensuring smooth kinetic energy conversion during the protection of the insulated wire. Simultaneously, the circulation of heat transfer oil between the rectangular liquid guide box, the inner diffuser axial pipe, and the outer isolation liquid guide pipe allows the insulated wire to convert the kinetic energy of its movement into the kinetic and thermal energy of the heat transfer oil in low-temperature environments. This circulation of the heat transfer oil directs some of the heat inside the cable to the outer layer, ensuring that the outer sheath of the insulated wire remains within a suitable temperature range in cold environments. This effectively prevents the outer sheath from becoming brittle and cracking in cold conditions. Furthermore, the thermal expansion and contraction of the inner diffuser axial pipe and the outer isolation liquid guide pipe create an isolation cavity in cold environments, indirectly improving the overall thermal insulation and protection performance of the insulated wire. Furthermore, in hot environments, based on the principle of thermal expansion and contraction of the inner ring diffuser axial tube and the outer ring isolation liquid guide tube, the expansion of the inner ring diffuser axial tube and the outer ring isolation liquid guide tube can eliminate the internal gaps of the insulated wire, thereby improving the heat exchange efficiency inside and outside the insulated wire. In addition, the expansion of the inner ring diffuser axial tube and the outer ring isolation liquid guide tube reduces the heat energy generated and transferred by friction during the flow of heat transfer oil, and the flow of heat transfer oil effectively improves the heat dissipation efficiency inside and outside the insulated wire, further enhancing the environmental adaptability of the insulated wire.

[0015] 2. A dynamic buffer protection mechanism is set up. Through the cooperation between the various components inside the dynamic buffer protection mechanism, the stability of the insulated wire is optimized. Through the cooperation of the central protective rubber sleeve and its components, the wind force blowing to the outside of the insulated wire is converted by the connecting rotating frame and the wind guide rectangular plate. The inertia of the flywheel during the rotation of the counterweight is used to absorb the kinetic energy of the insulated wire during the swaying process, thereby effectively reducing the swaying amplitude of the insulated wire during use and improving the stability of the insulated wire. Meanwhile, the cable's outer side is protected by an isolation fluid-conducting buffer sleeve and a flexible limiting silicone ring. This allows the insulated conductor to be cushioned by the elastic compression of the isolation fluid-conducting buffer sleeve and the flexible limiting silicone ring after a slight bend. This prevents the cable from directly squeezing the guide snap ring and rotating guide ring after bending, thus affecting the rotation of the counterweight buffer flywheel and further improving the stability of the counterweight buffer flywheel during use.

[0016] In summary, through the cooperation between the self-circulating buffer protection mechanism and the dynamic buffer protection mechanism, and by utilizing the alternating circulation of heat-conducting oil inside the arc-shaped mounting box, the rubber support arc-shaped block, the inner ring diffuser axial tube, and the outer ring isolation liquid guide tube, the heat generated and transferred by the insulated wire during the flow of heat-conducting oil in cold environments insulates the external protective layer. In hot environments, the circulation of heat-conducting oil can improve the heat exchange efficiency between the inside and outside of the insulated wire. At the same time, the inertia of the counterweight buffer flywheel during rotation and the kinetic energy of the cable during swaying are consumed to improve the stability of the insulated wire during use, thereby effectively improving the environmental adaptability and service life of the insulated wire. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0018] In the attached diagram: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the end face of the present invention; Figure 3 This is a schematic diagram of the structure of the self-circulating buffer protection mechanism of the present invention; Figure 4 This is a schematic diagram of the installation structure of the rubber support arc block of the present invention; Figure 5 This is a schematic diagram of the installation structure of the telescopic reset spring of the present invention; Figure 6 This is a schematic diagram of the structure for installing the elastic insulating silicone film of the present invention; Figure 7 This is a schematic diagram of the inner ring diffuser axial tube installation structure of the present invention; Figure 8 This is a schematic diagram of the structure of the outer ring flow guide buffer ring of the present invention; Figure 9 This is a schematic diagram of the installation structure of the dynamic buffer protection mechanism of the present invention; Figure 10 This is a schematic diagram of the structure for installing the counterweight buffer flywheel of the present invention; The diagram labels are as follows: 1. Center conductor; 2. Inner insulation layer; 3. Rubber protective layer; 4. Middle binding layer; 5. Outer rubber isolation layer. 6. Self-circulating buffer protection mechanism; 601. Arc-shaped mounting box; 602. Rectangular mounting side plate; 603. Rubber support arc-shaped block; 604. Rectangular liquid guide box; 605. Arc-shaped telescopic liquid bladder; 606. Telescopic return spring; 607. Flow guide top pipe; 608. Return bottom pipe; 609. Inner ring flow guide pipe; 610. Inner ring flow guide ring; 611. Inner ring diffuser axial pipe; 612. Outer ring flow guide pipe; 613. Outer ring flow guide buffer ring; 614. Outer ring isolation liquid guide pipe; 615. Elastic isolation silicone membrane; 616. Connecting cavity end ring; 617. Isolation rubber ring; 618. External isolation sleeve; 7. Dynamic buffer protection mechanism; 701. Central protective rubber sleeve; 702. Isolation and liquid guiding buffer sleeve; 703. Central limit mounting groove; 704. Flexible limit silicone ring; 705. Guide snap ring; 706. Rotating guide ring; 707. Counterweight buffer flywheel; 708. Mounting collar; 709. Connecting rotating frame; 710. Air guide rectangular plate. Detailed Implementation

[0019] 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.

[0020] Example: Figures 1-10 As shown, the present invention provides a technical solution, an overhead insulated conductor for lightning protection of power lines, including a center conductor 1, an inner insulation layer 2 tightly sleeved on the outside of the center conductor 1, a rubber protective layer 3 tightly wrapped on the outside of the inner insulation layer 2, a middle binding layer 4 jointly wrapped on the outside of multiple rubber protective layers 3, and an outer rubber isolation layer 5 tightly wrapped on the outside of the middle binding layer 4. A self-circulating buffer protection mechanism 6 is provided on the outer side of the outer rubber isolation layer 5. The self-circulating buffer protection mechanism 6 is used to transfer and buffer the shaking of the overhead insulated conductor during use, and adjust the temperature during the buffering process according to the ambient temperature. The self-circulating buffer protection mechanism 6 includes an arc-shaped mounting box 601, a rectangular mounting side plate 602, a rubber support arc-shaped block 603, a rectangular liquid guiding box 604, an arc-shaped telescopic liquid bladder 605, a telescopic return spring 606, a top guide tube 607, a bottom return tube 608, an inner ring guide tube 609, an inner ring guide ring 610, an inner ring diffuser axial tube 611, an outer ring guide tube 612, an outer ring guide buffer ring 613, an outer ring isolation liquid guiding tube 614, an elastic isolation silicone membrane 615, a connecting cavity end ring 616, an isolation rubber ring 617, and an outer isolation sleeve 618. The outer rubber isolation layer 5 has arc-shaped mounting boxes 601 symmetrically snapped at both ends, and rectangular mounting side plates 602 are fixedly connected to the ends of the arc-shaped mounting boxes 601. Rubber support arc-shaped blocks 603 are glued to the top and bottom of the inner side of the arc-shaped mounting box 601. Rectangular liquid guide boxes 604 are embedded in the middle of both sides of the inner side of the arc-shaped mounting box 601. Arc-shaped telescopic liquid bladders 605 are fixedly connected to the ends of the rectangular liquid guide boxes 604 at positions corresponding to the sides of the rubber support arc-shaped blocks 603. Telescopic return springs 606 are fixedly connected at equal intervals to the middle of one side of the inner side of the rectangular liquid guide box 604. Both the rectangular liquid guide box 604 and the arc-shaped telescopic liquid bladder 605 are filled with heat transfer oil. The two ends of the telescopic return springs 606 are fixedly connected to the inner walls of the rectangular liquid guide box 604 and the arc-shaped telescopic liquid bladder 605, respectively. Two rectangular liquid guiding boxes 604 are fixedly connected to the top center of the top via a flow guiding valve and a flow guiding top pipe 607 is fixedly connected to the bottom center of the bottom via a flow guiding valve. An inner ring guide tube 609 is fixedly connected to the middle of one side of a rectangular liquid guide box 604 via a liquid guide valve. An inner ring guide ring 610 is fixedly connected to the end of the inner ring guide tube 609 at the position corresponding to the outer side of the outer rubber isolation layer 5. An inner ring diffuser axial tube 611 is fixedly connected to one side of the inner ring guide ring 610 at the position corresponding to the outer side of the outer rubber isolation layer 5 via a pipe. Another rectangular liquid guide box 604 has an outer ring guide tube 612 fixedly connected to the middle of one side via a liquid guide valve. At the end of the outer ring guide tube 612, corresponding to the outer position of the inner ring guide ring 610, an outer ring guide buffer ring 613 is fixedly connected. The inner arc surfaces of the rubber support arc block 603 and the arc-shaped telescopic liquid bladder 605 are tightly fitted with the outer side of the outer rubber isolation layer 5. The outer ring of the inner ring guide ring 610 and the inner ring of the outer ring guide buffer ring 613 are tightly fitted. An outer ring isolation liquid guide tube 614 is fixedly connected at the end of the outer ring flow guide ring 613 at the position corresponding to the outer side of the inner ring diffusion axial tube 611. The inner ring diffusion axial tube 611 and the outer ring isolation liquid guide tube 614 are arranged alternately, and the inner walls of the inner ring diffusion axial tube 611 and the outer ring isolation liquid guide tube 614 are provided with elastic pleats. An elastic silicone membrane 615 is wrapped between the outer side of the inner ring diffuser axial tube 611 and the inner side of the outer ring isolation liquid guide tube 614. The elastic silicone membrane 615 is supported by an elastic material, and cavities are provided on both sides of the elastic silicone membrane 615 corresponding to the side positions of the inner ring diffuser axial tube 611 and the outer ring isolation liquid guide tube 614. The inner ring diffuser axial tube 611 and the outer ring isolation liquid guide tube 614 are fixedly connected to a connecting cavity end ring 616, and an isolation rubber ring 617 is sleeved on the outer side of the outer rubber isolation layer 5 at the position corresponding to the end of the connecting cavity end ring 616. The outer ring of the insulating liquid guide tube 614 and the outer ring of the connecting cavity end ring 616 are jointly covered by an outer insulating sleeve 618. The inner ring of the diffuser axial tube 611 and the outer ring of the insulating liquid guide tube 614 are connected by the connecting cavity end ring 616. The inner ring of the outer insulating sleeve 618 is tightly fitted with the outer ring of the insulating liquid guide tube 614 and the outer ring of the connecting cavity end ring 616. Through the cooperation between the components inside the outer rubber insulating layer 5, the overall protective performance of the insulated wire is improved. Through the cooperation between the two arc-shaped telescopic liquid bladders 605 and their internal components, the alternating expansion of the two arc-shaped telescopic liquid bladders 605 converts the kinetic energy of the insulated wire during the shaking process into the kinetic energy of the heat-conducting oil flowing inside the arc-shaped telescopic liquid bladders 605. The flow of heat-conducting oil provides a buffer for the insulated wire, effectively preventing damage to the protective sheath of the insulated wire due to continuous shaking during use, and preventing the internal conductor of the insulated wire from being directly exposed to the outside air and causing lightning strikes. This effectively improves the overall protective performance of the insulated wire and ensures that the insulated wire can maintain good protective performance after long-term use. The cooperation between the rectangular liquid guide box 604, the top guide pipe 607, and the bottom return pipe 608 drives the heat transfer oil to circulate locally within the arc-shaped mounting box 601, ensuring smooth kinetic energy conversion during the protection of the insulated wire. Simultaneously, the circulation of heat transfer oil between the rectangular liquid guide box 604, the inner ring diffuser axial pipe 611, and the outer ring isolation liquid guide pipe 614 allows the insulated wire to convert the kinetic energy of its movement into the kinetic and thermal energy of the heat transfer oil in low-temperature environments. During the circulation of the heat transfer oil, some of the heat inside the cable is directed to the outer layer, ensuring that the outer sheath of the insulated wire remains within a suitable temperature range when used in cold environments. This effectively prevents the outer sheath from becoming brittle and cracking in cold conditions. Furthermore, the thermal expansion and contraction of the inner ring diffuser axial pipe 611 and the outer ring isolation liquid guide pipe 614 in cold environments creates an isolation cavity, indirectly improving the overall thermal insulation and protection performance of the insulated wire. Furthermore, in hot environments, based on the principle of thermal expansion and contraction of the inner ring diffuser axial tube 611 and the outer ring isolation liquid guide tube 614, the expansion of the inner ring diffuser axial tube 611 and the outer ring isolation liquid guide tube 614 can eliminate the internal gap of the insulated wire, thereby improving the heat exchange efficiency inside and outside the insulated wire. In addition, the expansion of the inner ring diffuser axial tube 611 and the outer ring isolation liquid guide tube 614 reduces the heat energy generated and transferred by friction during the flow of heat transfer oil, and the flow of heat transfer oil effectively improves the heat dissipation efficiency inside and outside the insulated wire, further improving the environmental adaptability of the insulated wire. A dynamic buffer protection mechanism 7 is provided on the outside of the outer rubber isolation layer 5. The dynamic buffer protection mechanism 7 is used to transfer and convert the kinetic energy on the outside of the cable to reduce the swaying amplitude of the cable in strong wind. The dynamic buffer protection mechanism 7 includes a central protective rubber sleeve 701, an isolation and liquid guiding buffer sleeve 702, a central limiting mounting groove 703, a flexible limiting silicone ring 704, a guide snap ring 705, a rotating guide ring 706, a counterweight buffer flywheel 707, a mounting collar 708, a connecting rotating frame 709, and an air guide rectangular plate 710. A central protective rubber sleeve 701 is fitted onto the outer side of the rubber isolation layer 5 at the end position corresponding to the isolation rubber ring 617. Both ends of the central protective rubber sleeve 701 are filled with isolation liquid-conducting buffer sleeves 702. A central limiting installation groove 703 is provided in the middle of the outer side of the central protective rubber sleeve 701. A flexible limiting silicone ring 704 is wrapped and bonded to the inner side of the central limiting installation groove 703. A guide snap ring 705 is snapped into the inner side of the central limiting installation groove 703 at the position corresponding to the outer side of the flexible limiting silicone ring 704. The isolation fluid buffer sleeve 702 is filled with heat-conducting oil. The inner ring of the guide snap ring 705 is tightly fitted with the outer side of the flexible limiting silicone ring 704. The side of the end of the guide snap ring 705 is tightly fitted with the inner side of the central limiting installation groove 703. A rotating guide ring 706 is slidably engaged with the outer side of the guide ring 705 through a guide groove. A counterweight buffer flywheel 707 is slidably engaged with the middle of the outer side of the rotating guide ring 706. An installation collar 708 is fixedly engaged with the middle of the outer side of the counterweight buffer flywheel 707. Both sides of the mounting collar 708 are evenly and uniformly fixedly connected to the connecting rotating frame 709 along the circumferential direction. The connecting rotating frame 709 is evenly and uniformly fixedly connected to the wind guide rectangular plate 710 on one side. The inner side of the counterweight buffer flywheel 707 is tightly slidably fitted with the guide snap ring 705. The edge of the wind guide rectangular plate 710 is provided with an arc surface. Through the cooperation between the various components inside the dynamic buffer protection mechanism 7, the stability of the insulated wire is optimized. Through the cooperation of the central protective rubber sleeve 701 and its various components, the wind force blown to the outside of the insulated wire is converted by the connecting rotating frame 709 and the wind guide rectangular plate 710. The inertia of the counterweight buffer flywheel 707 during rotation and the kinetic energy of the insulated wire during swaying are consumed by the interaction, thereby effectively reducing the swaying amplitude of the insulated wire during use and improving the stability of the insulated wire. Meanwhile, the outer side of the cable is protected by the isolation fluid-conducting buffer sleeve 702 and the flexible limiting silicone ring 704. After the insulated wire undergoes a slight bend, it can be buffered by the elastic compression of the isolation fluid-conducting buffer sleeve 702 and the flexible limiting silicone ring 704. This prevents the cable from directly squeezing the guide snap ring 705 and the rotating guide ring 706 after bending, which would affect the rotation of the counterweight buffer flywheel 707. This further improves the stability of the counterweight buffer flywheel 707 during use.

[0021] The working principle and usage process of this invention: In the actual application of this invention, when it is necessary to use overhead insulated wires, the center conductor 1 needs to be connected to a suitable position first. The outer side of the center conductor 1 is insulated and protected by the inner insulation layer 2, and the outer side of the center conductor 1 is protected by the rubber protective layer 3. Then, the middle binding layer 4 is used to limit the multiple center conductors 1, and the outer side of the multiple center conductors 1 is protected by the outer rubber isolation layer 5. The arc-shaped mounting box 601 is installed onto the cable support iron accessory by bolts and rectangular mounting side plate 602. The top and bottom of the outer rubber isolation layer 5 are clamped and supported by rubber support arc-shaped block 603 to improve the installation stability of the cable. When the overhead insulated conductor sways under the action of strong wind, when the overhead insulated conductor sways and squeezes towards one side of the arc-shaped mounting box 601, the swaying overhead insulated conductor will squeeze the arc-shaped telescopic liquid bladder 605 on one side. When the arc-shaped telescopic liquid bladder 605 is squeezed, it simultaneously compresses and stores energy in the telescopic return spring 606. When the arc-shaped telescopic liquid bladder 605 is compressed, the heat-conducting oil inside it enters the corresponding rectangular liquid-conducting box 604. Then, the heat-conducting oil inside the rectangular liquid-conducting box 604 is guided into the outer ring flow buffer ring 613 through the outer ring flow buffer ring 613, and then into the outer ring isolation liquid-conducting pipe 614 through the outer ring flow buffer ring 613. Finally, the heat-conducting oil inside the outer ring isolation liquid-conducting pipe 614 is guided into the inner ring diffuser axial pipe 611 through the connecting cavity end ring 616. Then, the heat-conducting oil inside the inner ring diffuser axial pipe 611 flows back to the inner ring flow ring. Inside 610, the heat-conducting oil inside the inner ring guide ring 610 flows back to the rectangular liquid box 604 on the corresponding side through the inner ring guide pipe 609, thereby realizing the circulation of heat-conducting oil between the arc-shaped telescopic liquid bag 605, the inner ring diffuser axial pipe 611, and the outer ring isolation liquid pipe 614. During the circulation of the heat-conducting oil along the outer ring isolation liquid pipe 614 and the inner ring diffuser axial pipe 611, some of the heat inside the insulated wire is introduced into the outer layer area of ​​the insulated wire through the heat-conducting oil, and the external structure of the insulated cable is heated by the heat-conducting oil. Furthermore, by adjusting the valves on the top guide pipe 607, the bottom return pipe 608, the inner guide pipe 609, and the outer guide pipe 612, the flow direction and velocity of the heat transfer oil inside the arc-shaped telescopic liquid bladder 605 can be controlled. When the heat transfer oil flows through the inner wall of the outer isolation guide pipe 614, it will rub against the folds of the inner wall of the outer isolation guide pipe 614, thereby causing the temperature of the heat transfer oil to rise slowly during continuous flow. Furthermore, in cold weather, the circulating heat exchange and frictional heat generation of the heat transfer oil can keep the outer side of the overhead insulated conductor within a suitable temperature range, ensuring that the outer protective layer of the cable can maintain a suitable flexibility, so as to prevent the outer sheath of the overhead insulated conductor from cracking due to low-temperature embrittlement in cold weather. Simultaneously, utilizing the principle of thermal expansion and contraction, in extremely cold weather, the circulation of heat-conducting oil between the inner ring diffuser axial tube 611 and the outer ring isolation liquid guide tube 614 is closed by the flow guide valve. The inner ring diffuser axial tube 611 contracts inward due to the cold, while the outer ring isolation liquid guide tube 614 contracts outward due to the cold, creating isolation cavities on both sides of the elastic isolation silicone film 615. The cavities reduce the heat-conducting medium inside and outside the insulated wire, thereby reducing the heat conduction efficiency and improving the overall thermal insulation performance of the cable. This ensures that the temperature of the internal central conductor 1 can be maintained within a suitable temperature range even in extremely cold environments. When it is necessary to assist in heat dissipation inside the insulated wire in hot weather, the inner ring diffuser axial tube 611 and the outer ring isolation liquid guide tube 614 expand in volume after their structural materials and internal heat-conducting oil are heated. This expansion causes the inner ring diffuser axial tube 611 and the outer ring isolation liquid guide tube 614 to expand elastically outward as a whole. As the inner ring diffuser axial tube 611 and the outer ring isolation liquid guide tube 614 expand elastically, the wrinkles inside are flattened, thereby reducing the friction between the heat-conducting oil and the inner wall of the inner ring diffuser axial tube 611 and the outer ring isolation liquid guide tube 614. At this time, the heat-conducting oil inside the arc-shaped telescopic liquid bladder 605 will only generate a small amount of heat when flowing along the inner ring diffuser axial tube 611 and the outer ring isolation liquid guide tube 614. Furthermore, when the inner ring diffuser axial tube 611 and the outer ring isolation liquid guide tube 614 expand simultaneously, they will simultaneously squeeze the elastic isolation silicone film 615. After being squeezed, the elastic isolation silicone film 615 will undergo elastic deformation, thereby filling the gap between the inner ring diffuser axial tube 611 and the outer ring isolation liquid guide tube 614, making the inner ring diffuser axial tube 611 and the outer ring isolation liquid guide tube 614 fit more tightly. This allows the heat inside the insulated wire to be directly transmitted to the outside through the outer wall of the inner ring diffuser axial tube 611 and the outer ring isolation liquid guide tube 614, or through the circulation of the heat-conducting oil between the inner ring diffuser axial tube 611 and the outer ring isolation liquid guide tube 614, introducing the high-temperature heat-conducting oil inside into the outer layer of the insulated wire to improve the heat dissipation efficiency of the insulated wire. Furthermore, the expansion and contraction of the arc-shaped telescopic liquid bladder 605 converts the kinetic energy of the insulated wire swaying under strong winds into the kinetic energy and internal energy of the heat transfer oil. During the circulation of the heat transfer oil, the temperature of the inner and outer layers of the insulated wire is regulated, effectively preventing the kinetic energy of the insulated wire swaying from continuously acting on the connection point and outer protective layer of the insulated wire. This also prevents the damage to the outer sheath of the insulated wire during use from causing the central conductor 1 to be directly exposed to the outside air, thus preventing a decrease in lightning protection performance. When it is necessary to adjust the stability of the overhead insulated conductor, each component is installed on the outside of the outer rubber isolation layer 5 through the central protective rubber sleeve 701, and the cavity inside the central protective rubber sleeve 701 is filled through the isolation fluid buffer sleeve 702. Then, each component on the flexible limiting silicone ring 704 and the guide snap ring 705 is installed on the outside of the central protective rubber sleeve 701 through the central limiting mounting groove 703. When a strong airflow passes over the outer side of the outer rubber insulating layer 5, the airflow will drive the connecting rotating frame 709 to rotate through the wind guide rectangular plate 710. During the rotation of the connecting rotating frame 709, the counterweight buffer flywheel 707 will be continuously rotated through the mounting collar 708. During the rotation of the counterweight buffer flywheel 707, the rotation path of the counterweight buffer flywheel 707 is guided by the cooperation between the guide locking ring 705 and the rotating guide ring 706, preventing the counterweight buffer flywheel 707 from shaking or deviating during rotation. Furthermore, the inertia of the counterweight buffer flywheel 707 during rotation maintains the state of the insulated wire. The rotational inertia of the counterweight buffer flywheel 707 during rotation interacts with the kinetic energy of the overhead insulated wire during shaking, thereby effectively reducing the shaking amplitude of the insulated wire and improving the stability of the insulated wire in use.

[0022] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. An overhead insulated conductor for power lines protected against lightning, comprising a central conductor (1), characterized in that: The center conductor (1) is sleeved with an internal insulation layer (2), the external insulation layer (2) is coated with a rubber protective layer (3), a plurality of rubber protective layers (3) are collectively coated with a middle layer binding layer (4), and the middle layer binding layer (4) is coated with an external rubber isolation layer (5); The self-circulation buffering protection mechanism (6) is arranged outside the external rubber isolation layer (5), and is used for buffering the shaking of the overhead insulated conductor during use and adjusting the temperature in the buffering process according to the environmental temperature; The self-circulation buffering protection mechanism (6) comprises an arc-shaped mounting box (601); The arc-shaped mounting box (601) is clamped outside the external rubber isolation layer (5), and the arc-shaped mounting box (601) is connected with a rectangular mounting side plate (602) at the end portion; The arc-shaped mounting box (601) is connected with a rectangular liquid guide box (604) embedded and mounted in the middle portion of the two sides in the internal portion of the arc-shaped mounting box (601), and the rectangular liquid guide box (604) is connected with an arc-shaped telescopic liquid bag (605) at the end portion; Two rectangular liquid guide boxes (604) are fixedly connected with a liquid guide top pipe (607) through a liquid guide valve at the middle portion of the top end, and are fixedly connected with a backflow bottom pipe (608) through a liquid guide valve at the middle portion of the bottom end.

2. The lightning strike protected aerial insulated conductor of claim 1, wherein, The rectangular liquid guide box (604) and the arc-shaped telescopic liquid bag (605) are filled with heat-conducting oil in the internal portion, and the telescopic reset spring (606) is fixedly connected between the two ends and the inner wall of the rectangular liquid guide box (604) and the arc-shaped telescopic liquid bag (605).

3. The lightning strike protected aerial insulated conductor of claim 1, wherein, The rubber supporting arc-shaped block (603) and the inner circle arc surface of the arc-shaped telescopic liquid bag (605) are tightly attached to the outside of the external rubber isolation layer (5).

4. The lightning strike protected aerial insulated conductor of claim 1, wherein, One side of one rectangular liquid guide box (604) is fixedly connected with an inner circle liquid guide pipe (609) through a liquid guide valve, the end of the inner circle liquid guide pipe (609) is fixedly connected with an inner circle liquid guide ring (610) at the position outside the external rubber isolation layer (5), one side of the inner circle liquid guide ring (610) is fixedly connected with an inner circle diffusion axial pipe (611) through a pipeline at the position outside the external rubber isolation layer (5), and the outer circle of the inner circle liquid guide ring (610) is tightly attached to the inner circle of the outer circle liquid guide buffer ring (613); The other side of the other rectangular liquid guide box (604) is fixedly connected with an outer circle liquid guide pipe (612) through a liquid guide valve, the end of the outer circle liquid guide pipe (612) is fixedly connected with an outer circle liquid guide buffer ring (613) at the position outside the inner circle liquid guide ring (610), and the end of the outer circle liquid guide buffer ring (613) is fixedly connected with an outer circle isolation liquid guide pipe (614) at the position outside the inner circle diffusion axial pipe (611); The position between the outer side of the inner circle diffusion axial pipe (611) and the inner side of the outer circle isolation liquid guide pipe (614) is coated with an elastic isolation silica gel film (615). The end of the inner circle diffusion axial pipe (611) and the outer circle isolation liquid guide pipe (614) are fixedly connected with a communication cavity end ring (616), and the outer side of the outer rubber isolation layer (5) is sleeved with an isolation rubber ring (617) corresponding to the end position of the communication cavity end ring (616). The outer circle isolation liquid guide pipe (614) and the communication cavity end ring (616) are jointly coated with an external isolation sleeve (618).

5. The lightning-protected power line aerial conductor according to claim 4, characterized in that, The inner circle diffusion axial pipe (611) and the outer circle isolation liquid guide pipe (614) are arranged in a staggered manner, and the inner walls of the inner circle diffusion axial pipe (611) and the outer circle isolation liquid guide pipe (614) are provided with elastic folds.

6. The lightning-protected power line aerial conductor according to claim 4, wherein The elastic isolation silica gel membrane (615) is supported by an elastic material, and cavities are arranged on both sides of the elastic isolation silica gel membrane (615) corresponding to the side positions of the inner circle diffusion axial pipe (611) and the outer circle isolation liquid guide pipe (614).

7. The lightning-protected power line aerial conductor according to claim 4, wherein The inner circle diffusion axial pipe (611) and the outer circle isolation liquid guide pipe (614) are communicated through the communication cavity end ring (616), and the inner circle of the external isolation sleeve (618) is tightly attached to the outer sides of the outer circle isolation liquid guide pipe (614) and the communication cavity end ring (616).

8. The lightning-protected power line aerial conductor according to claim 4, wherein, The outer side of the outer rubber isolation layer (5) is provided with a dynamic buffer protection mechanism (7), which is used to transfer and convert the kinetic energy of the outer side of the cable to reduce the shaking amplitude of the cable in strong wind. The dynamic buffer protection mechanism (7) comprises a center protection rubber sleeve (701). The outer side of the outer rubber isolation layer (5) is sleeved with a center protection rubber sleeve (701) corresponding to the end position of the isolation rubber ring (617), and isolation liquid guide buffer sleeves (702) are filled and installed in the center protection rubber sleeve (701). A center limiting installation groove (703) is formed in the middle of the outer side of the center protection rubber sleeve (701), a flexible limiting silica gel ring (704) is attached to the inner side of the center limiting installation groove (703), and a guide clamping ring (705) is clamped on the outer side of the center limiting installation groove (703) corresponding to the position of the outer side of the flexible limiting silica gel ring (704). A rotating guide ring (706) is slidingly clamped on the outer side of the guide clamping ring (705) through a guide groove, a counterweight buffer flywheel (707) is slidingly clamped on the outer side of the rotating guide ring (706), and an installation sleeve ring (708) is fixedly clamped on the outer side of the counterweight buffer flywheel (707). The installation sleeve ring (708) is fixedly connected with a connecting rotating frame (709) on both sides at equal intervals in the circumferential direction, and the connecting rotating frame (709) is fixedly connected with a wind guide rectangular plate (710) on one side at equal intervals.

9. The lightning-protected power line aerial conductor according to claim 8, characterized in that, The inside of the isolation liquid guide buffer sleeve (702) is filled with heat conducting oil, the inner circle of the guide clamping ring (705) is tightly attached to the outer side of the flexible limiting silica gel ring (704), and the end side of the guide clamping ring (705) is tightly attached to the inner side of the center limiting installation groove (703).

10. The lightning-protected power line aerial conductor of claim 8, wherein, The counterweight buffering flywheel (707) is closely and slidingly attached to the guide clamping ring (705), and the air guide rectangular plate (710) is provided with a circular arc surface at the edge.

Images