High-strength wear-resistant overhead conductor

Abstract

The invention discloses a high-strength wear-resistant overhead conductor, and relates to the technical field of overhead conductors, the high-strength wear-resistant overhead conductor comprises a first wire body, a sleeve and a second wire body which are sequentially distributed, and the top end of the sleeve is provided with a supporting cylinder and a side cylinder which are used for flame retardance; a material cavity used for being filled with a flame retardant is formed in the side cylinder, an air bag communicated with the material cavity is arranged outside the side cylinder, and a puncturing mechanism used for enabling the material cavity to be communicated with the sleeve is arranged in the material cavity; a stirring mechanism used for stirring the flame retardant is arranged in the material cavity, the linkage mechanism comprises a sliding block, a liquid box and a flashing lamp, the sliding block is arranged in the supporting cylinder in a sliding mode, the liquid box is installed in the sleeve, and the flashing lamp is installed on the outer wall of the supporting cylinder. According to the high-strength wear-resistant overhead conductor, the conductive assembly, the puncturing mechanism and other structures are arranged, so that the effects of fire retardant solidification prevention and rapid flame retardance are achieved, and the use efficiency of the overhead conductor is improved.

Description

Technical Field

[0001] The invention relates to the technical field of overhead conductors, in particular to a high-strength wear-resistant overhead conductor. Background Art

[0002] Overhead conductors are mainly bare wires used for overhead power transmission lines. As overhead conductors are mostly used to transmit large currents, their specifications are relatively large, with a cross-sectional diameter of more than 10 mm and a maximum specification of hundreds or even thousands of square millimeters. Overhead conductors are mainly composed of steel core (i.e., reinforcing core) and aluminum stranded wires. The steel core is used as the load-bearing part, while the aluminum stranded wire is used as the conductive part.

[0003] The joints of overhead wires are prone to leakage due to loose connections and other reasons, and sparks may occur in severe cases. The overhead cables in the prior art usually do not have flame retardant functions, making it difficult to carry out emergency treatment when sparks occur, and their efficiency needs to be improved.

[0004] Therefore, it is necessary to propose a high-strength wear-resistant overhead conductor to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a high-strength wear-resistant overhead conductor to solve the problem that overhead cables in the prior art usually do not have flame retardant function, are difficult to carry out emergency treatment when sparks occur, and their use efficiency needs to be improved.

[0006] To achieve the above object, the present invention provides the following technical solution: a high-strength wear-resistant overhead conductor, comprising a first wire body, a sleeve and a second wire body which are sequentially distributed, and a support tube and a side tube for flame retardancy are arranged at the top of the sleeve;

[0007] The side tube is provided with a material cavity for filling the flame retardant inside, the side tube is provided with an air bag connected with the material cavity outside, and the material cavity is provided with a puncture mechanism for connecting the material cavity with the sleeve inside;

[0008] The interior of the material cavity is provided with a toggling mechanism for toggling the flame retardant;

[0009] When leakage generates high temperature, the linkage mechanism and the toggle mechanism are used to toggle the flame retardant to prevent solidification. When sparks are generated, the linkage mechanism presses the gas inside the support tube into the side tube, pushing the puncture mechanism to move and the airbag to expand. When the material cavity is connected with the sleeve, the airbag contracts to accelerate the spraying of the flame retardant into the sleeve for flame retardancy.

[0010] Preferably, the linkage mechanism includes a slider, a liquid box and a flashing light. The liquid box is filled with a low-boiling-point solution. When the low-boiling-point solution is affected by the high temperature generated by leakage, the slider is pushed to move upward and the flashing light is started.

[0011] Preferably, the low boiling point solution is tetrahydrofuran solvent.

[0012] Preferably, a partition is slidably provided inside the side tube, wherein the material cavity is located below the partition, an air cavity is formed above the partition, and the support tube is communicated and cooperated with the air cavity.

[0013] Preferably, a second spring is arranged inside the air cavity.

[0014] Preferably, the puncturing mechanism comprises a puncturing tube, and the puncturing tube is fixedly connected to the bottom end of the partition.

[0015] Preferably, the lower half of the thorn tube is wavy.

[0016] Preferably, the thorn tube is provided with a side groove.

[0017] Preferably, the toggle mechanism includes a toggle frame and a vertical plate, and the linkage mechanism utilizes a magnetic mechanism to cooperate with the toggle mechanism to toggle the flame retardant before extinguishing the fire.

[0018] Preferably, the sleeve is provided with a material hole for communicating the material cavity with the sleeve, and a sealing plate is fixedly connected to the interior of the material hole.

[0019] Technical effects and advantages of the present invention:

[0020] 1. The present invention achieves the effect of preventing the flame retardant from solidifying and quickly retardant by setting structures such as conductive components and piercing mechanisms, thereby improving the efficiency of the use of overhead wires;

[0021] 2. Through the arrangement of through holes, air cavities and other structures, the movement of the slider and the cooperation with the partition are utilized, and the sealing plate is pierced by the piercing tube, which is convenient for operation;

[0022] 3. The piercing tube punctures the sealing plate, and the flame retardant can be sprayed into the casing from the puncture point. The downward sliding of the partition can generate pressure to make the flame retardant spray out stably, ensuring the fire extinguishing effect;

[0023] 4. By setting up the airbag, with the help of the airbag's contraction elastic force, the speed of the flame retardant spraying is accelerated, thereby improving the fire extinguishing effect;

[0024] 5. The lower half of the piercing tube is wavy, which can make the tear at the rupture more obvious when the piercing tube pierces the sealing plate, so as to facilitate the spraying of the flame retardant;

[0025] 6. When the slider moves upward, the vertical plate will drive the toggle frame to move upward synchronously, and the flame retardant will be toggled before extinguishing the fire to ensure the stability of the fire extinguishing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the high-strength wear-resistant overhead conductor of the present invention.

[0027] Figure 2 This is a schematic structural diagram of the support cylinder and the side cylinder of the present invention.

[0028] Figure 3 This is a schematic structural diagram of the upper kit and the lower kit of the present invention.

[0029] Figure 4 For the present invention Figure 3 An enlarged schematic diagram of the structure at location A in the present invention.

[0030] Figure 5 For the present invention Figure 4 An enlarged schematic diagram of the structure at location B in the present invention.

[0031] Figure 6 This is a schematic structural diagram of the toggle frame and the vertical plate of the present invention.

[0032] Figure 7 This is a schematic structural diagram of the puncturing tube and the side groove of the present invention.

[0033] In the figure: 1, the first wire body; 2, the second wire body; 3, the sleeve; 301, the upper kit; 302, the lower kit; 4, the support cylinder; 5, the side cylinder; 501, the air cavity; 502, the material cavity; 6, the through hole; 7, the slider; 8, the elastic telescopic rod; 9, the first conductive sheet; 10, the second conductive sheet; 11, the solar panel; 12, the first spring; 13, the round hole; 14, the card slot; 15, the liquid box; 16, the partition; 17, the puncturing tube; 18, the through groove; 19, the airbag; 20, the material hole; 21, the sealing plate; 22, the toggle frame; 23, the vertical plate; 24, the first magnet; 25, the second magnet; 26, the side groove; 27, the flashing lamp; 28, the second spring. Detailed implementation mode

[0034] The present invention provides a high-strength wear-resistant overhead wire as Figures 1 to 7 shown, which includes a first wire body 1 and a second wire body 2. A sleeve 3 is arranged between the first wire body 1 and the second wire body 2. The sleeve 3 includes an upper kit 301 and a lower kit 302. The upper kit 301 and the lower kit 302 are fixed by structures such as bolts, and the joint of the first wire body 1 and the second wire body 2 is located inside the sleeve 3. The sleeve 3 is provided to protect the joint of the first wire body 1 and the second wire body 2, and at the same time ensure the stable connection of the first wire body 1 and the second wire body 2, improving the service strength of the overhead wire; in addition, wear-resistant layers are arranged outside both the first wire body 1 and the second wire body 2 to reduce the wear between them and the sleeve 3.

[0035] It should be noted that both the upper kit 301 and the lower kit 302 are made of heat-dissipating materials, such as: insulating plastics, etc., which do not affect the heat dissipation of the joint of the first wire body 1 and the second wire body 2 and can be adjusted according to specific usage situations.

[0036] Considering that the joint of the first wire body 1 and the second wire body 2 is prone to leakage, sparks and other situations due to poor connection, etc., referring to Figure 1 , Figure 2 , Figure 3 As shown, to achieve the effects of leakage prompt and flame retardance and facilitate the maintenance of construction personnel, a support cylinder 4 is provided at the top of the sleeve 3. The support cylinder 4 is located on the upper kit 301. Specifically, during installation, the upper kit 301 is located above the lower kit 302, and the support cylinder 4 is located at the top of the upper kit 301. The support cylinder 4 is used to cooperate for leakage indication to remind the inspection personnel to pay attention to the occurrence of faults.

[0037] Referring to Figure 3 , Figure 4 As shown, a linkage mechanism is provided between the upper kit 301 and the support cylinder 4. The linkage mechanism includes a slider 7, a liquid box 15 and a flashing lamp 27. The slider 7 is slidably arranged inside the support cylinder 4. A first spring 12 is fixedly connected to the bottom end of the slider 7, and the bottom end of the first spring 12 is fixedly connected to the bottom of the support cylinder 4. The first spring 12 is provided for the reset of the slider 7. The liquid box 15 is installed inside the sleeve 3, and the liquid box 15 is close to the joint of the first wire body 1 and the second wire body 2. The flashing lamp 27 is installed on the outer wall of the support cylinder 4. When the flashing lamp 27 works, it can emit flashing light. The liquid box 15 corresponds to the bottom end of the support cylinder 4, and the liquid box 15 and the support cylinder 4 are connected by a communication component. The liquid box 15 is filled with a low-boiling-point solution, and the low-boiling-point solution can be used but is not limited to tetrahydrofuran solvent.

[0038] When leakage occurs, it will generate accumulated high temperature. The tetrahydrofuran solvent slowly boils under the influence of high temperature, generating a large amount of gas. The gas enters the inside of the support cylinder 4 through the communication component, pushes the slider 7 to move upward, and uses the conductive component to start the flashing lamp 27 to achieve the effect of reminding the inspection personnel.

[0039] Moreover, when the low-boiling-point solution boils, it needs to absorb heat, so it will absorb part of the high temperature heat generated by leakage to achieve the heat dissipation effect.

[0040] Referring to Figure 3 , Figure 4 As shown, the conductive component includes an elastic telescopic rod 8, a first conductive sheet 9 and a second conductive sheet 10. When the first conductive sheet 9 and the second conductive sheet 10 are in contact, the flashing lamp 27 can be powered on and started. The elastic telescopic rod 8 is fixedly connected to the top of the slider 7. The first conductive sheet 9 is installed on the top of the elastic telescopic rod 8. The second conductive sheet 10 is installed on the lower surface of the top of the liquid box 15. The flashing lamp 27 is started by the movement of the slider 7.

[0041] Specifically, when the slider 7 moves upward, it will drive the first conductive sheet 9 to move upward synchronously through the elastic telescopic rod 8. When the first conductive sheet 9 and the second conductive sheet 10 are in contact, the flashing lamp 27 starts and emits flashing light.

[0042] After the hidden danger of electric leakage is eliminated, the reset elastic force of the first spring 12 causes structures such as the slider 7 to reset, and the flashing light 27 stops operating.

[0043] Referring to Figure 4 As shown in , specifically when setting up, the connecting component includes a round hole 13 and a card slot 14. The round hole 13 is opened on the outer arc surface of the upper sleeve 301, and the card slot 14 is opened on the inner arc surface of the upper sleeve 301. The round hole 13 and the card slot 14 are connected. The liquid box 15 is installed in the card slot 14 by a clamping method. The liquid box 15 can be made of, but is not limited to, alumina ceramic material, which is both heat-conducting and insulating, facilitating the boiling of the low-boiling-point solution and can be adjusted according to specific usage conditions.

[0044] During actual installation, before the first wire body 1 and the second wire body 2 are spliced and fixed, the liquid box 15 is loaded into the card slot 14, that is, in the previous steps such as transportation, the liquid box 15 is in a separated state from the upper sleeve 301, and the liquid box 15 can be closed with a cap to prevent the low-boiling-point solution from spilling out randomly.

[0045] The bottom end of the support cylinder 4 is funnel-shaped, facilitating the reflux of the cooled low-boiling-point solution into the interior of the liquid box 15.

[0046] And this overhead wire is especially suitable for indoor installation. The low-boiling-point solution is not affected by external sunlight, etc., ensuring that the fault signal can be sent timely and accurately.

[0047] A power supply device (not shown in the figure) is provided on the support cylinder 4 to supply power to the flashing light 27. The power supply device includes structures such as a storage battery; a solar panel 11 is fixedly installed on the top of the support cylinder 4, and the solar panel 11 charges the storage battery through the cooperation of structures such as a solar controller, achieving the purpose of energy conservation and environmental protection.

[0048] Referring to Figure 3 、 Figure 4 As shown in , considering that partial electric leakage may cause sparks, especially when the sleeve 3 is located above flammable substances, if waiting for rescue by inspection personnel, there will be a certain lag. To achieve the effect of rapid flame retardancy, a side cylinder 5 is provided at the top end of the sleeve 3. The side cylinder 5 is fixedly connected to the side wall of the support cylinder 4, and both the support cylinder 4 and the side cylinder 5 are located on the upper sleeve 301, and the side cylinder 5 is used for fire extinguishing in cooperation.

[0049] A partition plate 16 is slidably arranged inside the side cylinder 5. An air cavity 501 is formed above the partition plate 16, and a material cavity 502 is formed below the partition plate 16. A second spring 28 is arranged inside the air cavity 501. One end of the second spring 28 is fixedly connected to the lower surface of the top of the side cylinder 5, and the other end of the second spring 28 is fixedly connected to the partition plate 16. A through hole 6 is formed in the side wall of the side cylinder 5, and the support cylinder 4 communicates with the air cavity 501 through the through hole 6. When the slider 7 slides upward inside the support cylinder 4, the gas in the upper half of the support cylinder 4 will be pressed into the air cavity 501, causing the partition plate 16 to slide downward, that is, the sliding of the slider 7 drives the sliding of the partition plate 16.

[0050] Sealing gaskets can be arranged between the slider 7 and the inner wall of the support cylinder 4, and between the partition plate 16 and the inner wall of the side cylinder 5 to increase wear resistance and improve sealing performance.

[0051] A flame retardant is filled inside the material cavity 502. The flame retardant includes ammonium phosphate salts, etc. Similar to dry powder fire extinguishing agents, it has the characteristics of fast fire extinguishing speed and high efficiency.

[0052] Refer to Figure 4 As shown in

[0053] Refer to Figure 3 、 Figure 4 As shown in

[0054] Specifically, when electric leakage occurs, a cumulative high temperature will be generated. The tetrahydrofuran solvent will slowly boil under the influence of the high temperature, generating a large amount of gas. The gas enters the inside of the support cylinder 4 and pushes the slider 7 to move upward. When the first conductive sheet 9 and the second conductive sheet 10 come into contact, the flashing lamp 27 is activated and emits a flashing light. At the same time, the slider 7 will press the gas in the upper half of the support cylinder 4 into the air cavity 501, causing the partition plate 16 to slide downward. However, during this process, since the generated high temperature is lower than the temperature when a spark appears, the upward movement distance of the slider 7 is limited, the elastic telescopic rod 8 only shrinks slightly, and the gas entering the air cavity 501 is limited. Although the puncturing tube 17 moves downward, it will not contact the sealing plate 21, and the flame retardant will not be used.

[0055] Further, when a spark appears, the generated temperature will be significantly higher than that during mere leakage. The tetrahydrofuran solvent slowly boils under the influence of high temperature, generating more gas compared to when there is only leakage. The slider 7 slides upward more significantly, and the elastic telescopic rod 8 contracts more significantly, injecting more gas into the air chamber 501. Therefore, the partition plate 16 is pushed to slide downward by a larger distance, and the puncturing tube 17 pierces the sealing plate 21. After the sealing plate 21 is pierced, the flame retardant can be sprayed from the puncture to the inside of the sleeve 3, achieving the effect of rapid flame retardance; and the downward sliding of the partition plate 16 can generate pressure to ensure the stable spraying of the flame retardant, guaranteeing the fire extinguishing effect.

[0056] By providing structures such as a conductive component and a puncturing mechanism, the present invention can timely emit a fault signal during leakage, and at the same time achieve the effect of rapid flame retardance, improving the efficiency of the use of overhead conductors.

[0057] By providing structures such as the through hole 6 and the air chamber 501, and utilizing the movement of the slider 7 and its cooperation with the partition plate 16, the puncturing tube 17 pierces the sealing plate 21, with convenient, sensitive and flexible operation.

[0058] In the present invention, the elastic force of the elastic telescopic rod 8 is set appropriately. When there is leakage, the upward movement distance of the slider 7 is limited, and the elastic telescopic rod 8 only undergoes a small amount of contraction; when a spark appears, the elastic telescopic rod 8 contracts more significantly.

[0059] Refer to Figure 3 、 Figure 4 As shown in

[0060] On the initial stage of the downward sliding of the partition plate 16, since the sealing plate 21 is not pierced, affected by the downward sliding of the partition plate 16, gas enters the airbag 19, causing the airbag 19 to expand and become larger; when the sealing plate 21 is pierced, the airbag 19 contracts, and with the assistance of the contraction elastic force of the airbag 19, the spraying speed of the flame retardant is accelerated, improving the fire extinguishing effect.

[0061] Refer to Figure 3 、 Figure 4 As shown in

[0062] Refer to Figure 7 As shown in

[0063] Refer to Figure 4 、 Figure 6As shown in the figure, to prevent the solidification of the flame retardant and affect the subsequent fire extinguishing effect, a stirring mechanism for stirring the flame retardant is provided inside the material cavity 502. The stirring mechanism includes a stirring frame 22 and a vertical plate 23. The stirring frame 22 is slidably arranged inside the material cavity 502, and the vertical plate 23 is fixedly connected to the stirring frame 22, and the vertical plate 23 is located on the side of the stirring frame 22 close to the support cylinder 4. The linkage mechanism drives the vertical plate 23 to move synchronously by using a magnetic mechanism. The magnetic mechanism includes a first magnet 24 and a second magnet 25. The first magnet 24 is fixedly embedded on the surface of the slider 7 close to the side cylinder 5, and the second magnet 25 is fixedly embedded on the surface of the vertical plate 23 close to the support cylinder 4. The magnetism of the mutually close surfaces of the first magnet 24 and the second magnet 25 is opposite, so that the slider 7 and the vertical plate 23 can move up and down synchronously. Moreover, the support cylinder 4 and the side cylinder 5 are made of materials that are not affected by magnetism, such as plastics, and the wall thickness is appropriate without affecting the cooperation of the first magnet 24 and the second magnet 25.

[0064] During actual use, since the magnetism of the mutually close surfaces of the first magnet 24 and the second magnet 25 is opposite, when the slider 7 moves upward, it will drive the stirring frame 22 to move upward synchronously through the vertical plate 23, stir the flame retardant before extinguishing the fire, prevent solidification, and ensure the stability of the fire extinguishing operation.

[0065] Working principle: When electric leakage occurs, accumulative high temperature will be generated. The tetrahydrofuran solvent will slowly boil under the influence of the high temperature, generating a large amount of gas. The gas enters the inside of the support cylinder 4 and pushes the slider 7 upward. When the first conductive sheet 9 and the second conductive sheet 10 come into contact, the flashing lamp 27 is activated and emits a flashing light to achieve the effect of reminding the inspection personnel; at the same time, the slider 7 will press the gas in the upper half of the support cylinder 4 into the gas cavity 501, causing the partition plate 16 to slide downward. However, during this process, since the generated high temperature is lower than the temperature when a spark appears, the upward movement distance of the slider 7 is limited, and the elastic telescopic rod 8 only contracts slightly. The gas entering the gas cavity 501 is limited, and although the puncture tube 17 moves downward, it will not contact the sealing plate 21, and the flame retardant will not be used.

[0066] When a spark appears, the generated temperature will be significantly higher than the temperature when only electric leakage occurs. The tetrahydrofuran solvent will slowly boil under the influence of the high temperature, and the generated gas will be more than that during electric leakage. The slider 7 slides upward more significantly, the elastic telescopic rod 8 contracts more significantly, and more gas is pressed into the gas cavity 501. Therefore, the partition plate 16 is pushed to slide downward by a larger distance, and the puncture tube 17 pierces the sealing plate 21. When the sealing plate 21 is pierced, the flame retardant can be sprayed from the break to the inside of the sleeve 3 to achieve the effect of rapid flame retardance.

[0067] In the initial stage of the downward sliding of the partition plate 16, since the sealing plate 21 is not punctured, affected by the downward sliding of the partition plate 16, gas enters the airbag 19, causing the airbag 19 to expand and become larger; when the sealing plate 21 is punctured, the airbag 19 contracts, and with the assistance of the contraction elastic force of the airbag 19, the spraying speed of the flame retardant is accelerated, improving the fire extinguishing effect.

Claims

1. A high-strength wear-resistant overhead conductor, comprising a first wire body (1), a sleeve (3), and a second wire body (2) distributed in sequence, characterized in that: A support cylinder (4) and a side cylinder (5) for flame retardancy are provided at the top end of the casing (3). A material cavity (502) for filling a flame retardant is arranged inside the side cylinder (5), an airbag (19) communicated with the material cavity (502) is arranged outside the side cylinder (5), and a puncturing mechanism for communicating the material cavity (502) with the casing (3) is arranged inside the material cavity (502). A stirring mechanism for stirring the flame retardant is arranged inside the material cavity (502). When high temperature is generated due to electric leakage, the flame retardant is stirred to prevent solidification by the linkage mechanism and the stirring mechanism. When a spark is generated, the gas inside the support cylinder (4) is pressed into the side cylinder (5) by the linkage mechanism, the puncturing mechanism is pushed to move, and the airbag (19) expands. When the material cavity (502) is communicated with the casing (3), the airbag (19) contracts to accelerate the spraying of the flame retardant into the casing (3) for flame retardancy.

2. The high-strength wear-resistant overhead conductor according to claim 1, wherein: The linkage mechanism includes a slider (7), a liquid box (15) and a flashing lamp (27). The liquid box (15) is filled with a low-boiling-point solution. When the low-boiling-point solution is affected by the high temperature generated by electric leakage, the slider (7) is pushed to move upward and the flashing lamp (27) is started.

3. The high-strength wear-resistant overhead conductor according to claim 2, characterized in that: The low-boiling-point solution is a tetrahydrofuran solvent.

4. A high-strength wear-resistant overhead conductor according to claim 1, characterized in that: A partition plate (16) is slidably arranged inside the side cylinder (5). The material cavity (502) is located below the partition plate (16), and an air cavity (501) is formed above the partition plate (16). The support cylinder (4) is communicated and matched with the air cavity (501).

5. The high-strength wear-resistant overhead conductor according to claim 4, characterized in that: A second spring (28) is arranged inside the air cavity (501).

6. The high-strength wear-resistant overhead conductor according to claim 4, wherein: The puncturing mechanism includes a puncturing tube (17), and the puncturing tube (17) is fixedly connected to the bottom end of the partition plate (16).

7. The high-strength wear-resistant overhead conductor according to claim 6, characterized in that: The lower half section of the puncturing tube (17) is wavy.

8. The high-strength wear-resistant overhead conductor according to claim 6, characterized in that: Side grooves (26) are formed in the puncturing tube (17).

9. The high-strength wear-resistant overhead conductor according to claim 1, wherein: The stirring mechanism includes a stirring frame (22) and a vertical plate (23). The linkage mechanism cooperates with the stirring mechanism by a magnetic mechanism to stir the flame retardant before fire extinguishing.

10. The high-strength wear-resistant overhead conductor according to claim 1, wherein: A material hole (20) for communicating the material cavity (502) with the casing (3) is arranged on the casing (3), and a sealing plate (21) is fixedly connected inside the material hole (20).

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