A corrosion-resistant and waterproof overhead cable and a preparation method thereof

Abstract

The present invention discloses a corrosion-resistant and waterproof overhead cable and a preparation method thereof. The present invention relates to the technical field of overhead cables, comprising a polyethylene tube, wherein an aluminum stranded wire is fixedly connected to the interior of the polyethylene tube, and a plastic tube is fixedly connected to the outer surface of the polyethylene tube. The corrosion-resistant and waterproof overhead cable and the preparation method thereof can achieve the goal of gas being transported from one side of the interval to the interior of the sleeve tube, and the gas flows along the spiral sheet to the insulator on the other side. The barrier of the inner extension ring allows the gas to be discharged through an air pump, and the flowing gas flows along the spiral sheet. The humidity inside the gas is detected by a detector. When cracks occur on the surface of the outer sheath and the heat shrink tube and water leaks, the humidity increases when the gas flows through the detector. The location of the crack can be roughly located by the difference in data from multiple detectors, without the need for manual regular inspection, thereby solving the problem of the need for regular inspection and maintenance due to the occurrence of corrosion phenomena and the increase in the cost of line maintenance.

Description

Technical Field

[0001] The invention relates to the technical field of overhead cables, in particular to a corrosion-resistant and waterproof overhead cable and a preparation method thereof. Background Art

[0002] Overhead transmission lines are an indispensable and important part of the power system. They are responsible for transmitting the electricity generated by power plants to various power users. Since overhead transmission lines are exposed to the natural environment for a long time, they are easily affected by corrosion, which affects the safe and reliable operation of the lines. Research on the causes and countermeasures of corrosion of overhead transmission lines is of great significance to ensuring the safe and stable operation of the power system. Conventional waterproof and corrosion-resistant power cables are mainly achieved by setting a functional structure of water-blocking layer and anti-corrosion sheath on the periphery of the cable core. The waterproof and corrosion-resistant power cables of this structure not only have a single external functional structure and poor effect, but also their conductors have the possibility of absorbing moisture or water during service. The conductor formed by twisting metal wires has a number of micro pores that can absorb moisture or water. The Chinese patent announcement number is: CN110797142A, which discloses "A kind of ultra-high temperature resistant and anti-corrosion cable". In this patent, the insulating layer is used to ensure that the transmitted current or electromagnetic wave only travels along the conductor and does not flow to the outside. The filler is used to block the external moisture from entering the insulating layer. The thermal insulation layer can effectively prevent the external heat from being conducted to the conductor, thereby improving the high temperature resistance of the cable body. However, the protective layer is prone to cracks and failure under fatigue tension.

[0003] Existing corrosion-resistant and waterproof overhead cables and their preparation methods have structural design defects. The presence of an oxide layer and a water film on the cable surface can cause cable corrosion. In addition, cracks are generated under stress, which leads to accelerated oxidation of the aluminum conductor. The occurrence of corrosion requires regular inspection and maintenance, which increases the cost of line maintenance. Summary of the invention

[0004] The present invention provides a corrosion-resistant and waterproof overhead cable and a preparation method thereof, which solves the problems mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A corrosion-resistant and waterproof overhead cable, comprising a polyethylene tube, an aluminum stranded wire is fixedly connected to the interior of the polyethylene tube, a plastic tube is fixedly connected to the outer surface of the polyethylene tube, a hemp rope is fixedly connected to the interior of the plastic tube, a heat-conducting silicone tube is fixedly connected to the outer surface of the plastic tube, and a spiral sheet is fixedly connected to the outer surface of the heat-conducting silicone tube, and further comprising:

[0006] A detection mechanism, which is fixedly mounted on the outer surface of the spiral sheet and is used to wrap and protect the spiral sheet and detect cracks and water leakage on the cable surface;

[0007] A connecting mechanism, the connecting mechanism is fixedly mounted on the outer surface of the detection mechanism, the connecting mechanism is used for connecting and supporting the detection mechanism and for conveying and introducing the gas inside the detection mechanism, the bracket is fixedly mounted on the surface of the transmission tower, the air pump is engaged with the connecting mechanism, the air pump is used to control the introduction and discharge of the gas inside the detection mechanism, the sleeve pipe engages the multiple outer sheaths, and the inner side surface of the inner extension ring is tightly fitted with the surface of the thermally conductive silicone tube, and the position between the two insulators forms a gap;

[0008] A waterproof membrane mechanism, which is fixedly mounted above the surface of the connecting mechanism and reciprocates on the surface of the detection mechanism to promote the breaking of the water film and the scraping off of the surface oxides;

[0009] The detection mechanism includes a sleeve tube, the inner side surface of the sleeve tube is fixedly connected with an inner extension ring, the outer surface of the inner extension ring is respectively fixedly connected with an outer sheath and a heat shrink tube, the inner side surface of the heat shrink tube is fixedly installed on the outer surface of the spiral sheet, the surface of the spiral sheet is fixedly connected with a detector, dry gas is introduced into the interior of the outer sheath through a through tube at one end, the dry gas flows along the spiral sheet to the through tube on the other side, two alignment seats move towards each other and approach the outer sheath to clamp and support the outer sheath, two coupling plates slide close to the docking shell, and the arc structure of the docking shell enables the alignment seat and the coupling plate to be firmly connected.

[0010] Preferably, the interior of the plastic tube is filled with silicone filler, the position between the thermally conductive silicone tube and the plastic tube is filled with thermally conductive insulating coating, and the position between the heat shrink tube and the outer sheath is filled with silicone filler.

[0011] Preferably, the connection mechanism comprises a connection body, a plug is fixedly connected to the bottom of the connection body, an alignment component is fixedly connected to the surface of the plug, and the inner side surface of the alignment component is in close contact with the surface of the outer sheath.

[0012] Preferably, the connecting mechanism also includes a joining plate, and there are two joining plates. The two joining plates are symmetrically fixed on both sides of the alignment component. The inner side surface of the joining plate is slidably connected to the surface of the outer sheath. If water enters the position between the heat shrink tube and the thermal conductive silicone tube, it will cause power transmission safety problems. Silicone filler is poured into the position between the outer sheath and the heat shrink tube. The outer sheath, heat shrink tube and silicone filling layer form a waterproof and anti-corrosion layer. The spiral sheet is sleeved between the heat shrink tube and the thermal conductive silicone tube. Pins are penetrated on the surface of the sleeve tube, and the pins extend to the inside of the silicone filling layer. It is not easy to produce gaps when multiple outer sheaths are joined, which makes the overhead cable more waterproof and corrosion-resistant.

[0013] Preferably, the alignment component comprises a rubber lining, the inner side of the rubber lining is in close contact with the surface of the outer sheath, the outer surface of the rubber lining is fixedly connected to an alignment seat, and the outer surface of the alignment seat is fixedly connected to a docking shell.

[0014] Preferably, the alignment assembly further comprises a through-tube, one end of which passes through the surface of the docking shell and extends to the inside of the outer sheath, and the through-tube is used for conveying and discharging the gas inside the outer sheath.

[0015] Preferably, the waterproof membrane mechanism includes an optical axis slide bar, which is fixedly installed at an upper position on the surface of the connecting mechanism, and the output ends of the optical axis slide bar are respectively fixedly connected with a shrink shell and an adjustment component, and the bottom of the adjustment component is rotatably connected with a hinged table, and the bottom of the hinged table is provided with a scraping component.

[0016] Preferably, the adjusting assembly includes a fixed body, the top of which is fixedly mounted on the bottom of the output end of the optical axis slide bar, and a protective shell is fixedly connected to the surface of the fixed body. The output end of the optical axis slide bar makes reciprocating linear movements, and the tapered shape of the tapered shell prevents impurities adhering to the surface of the optical axis slide bar from interfering with it when the optical axis slide bar moves. The outer sheath is connected and supported by the alignment assembly, and as the optical axis slide bar is driven, the scraping assembly slides back and forth on the surface of the outer sheath. The adjusting assembly is connected to the position between the optical axis slide bar and the scraping assembly. Since the axis of the outer sheath bends downward, the scraping assembly will move up and down while moving horizontally.

[0017] Preferably, the adjustment assembly also includes a spring, the top end of the spring is fixedly mounted on the top of the inner side of the protective shell, the bottom end of the spring is fixedly connected to a spherical plug, and the surface of the spherical plug is rotatably connected to the inner side of the hinge platform.

[0018] Preferably, the scraper assembly includes a slotted tube, the inner side surface of the slotted tube is sleeved on the outer surface of the outer sheath, the surface of the slotted tube is grooved, the end surface of the slotted tube is fixedly connected with a flaring ring by welding, and the spring is arranged inside the protective shell. When the optical axis slide rod drives the protective shell to move horizontally, the scraper ring fits tightly against the surface of the outer sheath, and the scraper ring scrapes off the water film and oxide on the surface of the outer sheath. Since the outer sheath bends downward under the action of gravity, the spring is driven to stretch and compress inside the protective shell, and the spherical plug slides up and down on the inner side surface of the protective shell. The limitation of the protective shell prevents the spherical plug from deflecting under the influence of resistance.

[0019] Preferably, the scraper assembly further comprises a fixing rod, the end face of which is fixedly mounted on the surface of the slotted pipe close to the slot, and one end of the fixing rod away from the slotted pipe is fixedly connected to a scraper ring.

[0020] A method for preparing a corrosion-resistant and waterproof overhead cable comprises the following steps:

[0021] Step 1, wire core manufacturing, at room temperature, drawing the aluminum rod into aluminum wire, heating and heat preservation of the aluminum wire, and then naturally cooling the aluminum wire, twisting the aluminum wire by twisting multiple single wires to form an aluminum stranded wire, and using a traction machine to pull the aluminum stranded wire to be coated with cross-linked polyethylene inside the injection molding extruder to complete the preparation of the conductor wire core;

[0022] Step 2: Forming the skeleton structure: Put plastic and rubber particles into the injection molding extruder, and form the hot melt plastic into a plastic tube through a die. Pass the three conductor cores through the plastic tubes respectively, and then pass the hemp rope into the inside of the plastic tube. Put the thermal conductive silicone tube through the outer surface of the plastic tube, pour silicone filler into the inside of the plastic tube, pour thermal conductive insulating paint into the inside of the thermal conductive silicone tube, and cool and shape.

[0023] Step 3: heat shrink wrapping, passing the cable skeleton in step 2 through the spiral sheet, welding a plurality of detectors on the surface of the spiral sheet, passing the heat shrink tube through the spiral sheet, heating the whole structure, heating and shrinking the heat shrink tube to tightly wrap the spiral sheet, passing the outer sheath through the heat shrink tube and filling the gap with silicone filler, and the sleeve tube is tightly joined with the silicone filler;

[0024] Step 4. Install the waterproof structure. Fix the optical axis slide bar on the surface of the joint plate. Fix the adjustment assembly on the output end of the optical axis slide bar by welding. Slide the scraper assembly to the outer surface of the outer sheath. The surface of the scraper assembly is in close contact with the outer surface of the outer sheath. Fix the hinged table on the top of the scraper assembly. The bottom of the adjustment assembly is rotatably installed on the inner side of the hinged table.

[0025] The present invention provides a corrosion-resistant and waterproof overhead cable and a preparation method thereof. It has the following beneficial effects:

[0026] 1. The corrosion-resistant and waterproof overhead cable and its preparation method, gas is transported from one side of the interval to the inside of the sleeve tube, the gas flows along the spiral sheet to the insulator on the other side, the barrier of the inner extension ring allows the gas to be discharged through the air pump, the flowing gas flows along the spiral sheet, the humidity inside the gas is detected by the detector, when cracks appear on the surface of the outer sheath and the heat shrink tube and water leaks, the humidity increases when the gas flows through the detector, and the location of the crack can be roughly located by the difference of data from multiple detectors, without the need for manual regular inspection, which solves the problem of corrosion requiring regular inspection and maintenance and increasing the cost of line maintenance.

[0027] 2. The corrosion-resistant and waterproof overhead cable and its preparation method, the plug is clamped by two alignment seats, the connector is fixedly connected to the bottom of the insulator, so that the cable can be quickly installed on the insulator, the rubber lining is in close contact with the surface of the outer sheath as an inner lining and supports it, and is used to protect the outer sheath. At the same time, the rubber material makes it possible for the vibration of the outer sheath to be absorbed by the rubber lining when it is swayed by wind, so that the outer sheath and the heat shrink tube are not prone to fatigue cracks, and the inner part of the outer sheath and the heat shrink tube is less likely to be corroded by water seepage.

[0028] 3. The corrosion-resistant and waterproof overhead cable and its preparation method, the inner extension ring extends to the surface of the thermally conductive silicone tube, the position between the two inner extension rings is limited by the spiral sheet to form a spiral airflow channel, and multiple detectors are evenly arranged inside the spiral airflow channel. With the introduction of dry gas, the dry gas flows through the spiral airflow channel to carry the moist water vapor. The value of the detector is used to determine the approximate damage position of the cable, thereby reducing the maintenance cost of the cable, and the gas is transported and discharged within a certain distance, so that the accuracy of gas humidity detection is higher.

[0029] 4. The corrosion-resistant and waterproof overhead cable and its preparation method have variable length of the adjustment component so that the scraping component has retreat space in the height direction. The hinged platform and the adjustment component are rotatably connected. Since the outer sheath bends downward, the rotatable connection method makes it difficult for the scraping component to get stuck when moving horizontally and vertically, and the water film and oxide are scraped off in time, which solves the problem that the oxide layer and water film on the surface of the cable will cause cable corrosion, and the problem that cracks are generated under stress, leading to accelerated oxidation of the aluminum conductor.

[0030] 5. The corrosion-resistant and waterproof overhead cable and its preparation method have a scraper ring that is less likely to get stuck when moving, and the support of the fixed rod allows a gap to exist between the scraper ring and the inner side of the slotted tube. After the water film and oxide are scraped away by the scraper ring, they will pass through the gap and move away with the airflow. Expanding rings are fixedly connected on both sides of the slotted tube. When the gas passes through the expanding ring, the flow rate is faster, making it easier to remove the water film and oxide on the surface of the fixed rod, and the corrosion resistance and waterproof performance of the cable surface are better. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a flow chart of the method for preparing the corrosion-resistant and waterproof overhead cable of the present invention;

[0032] Figure 2 A three-dimensional diagram of the entire corrosion-resistant and waterproof overhead cable of the present invention;

[0033] Figure 3 It is a structural schematic diagram of the connection mechanism of the present invention;

[0034] Figure 4 It is a structural schematic diagram of the alignment component of the present invention;

[0035] Figure 5 It is a structural schematic diagram of the detection mechanism of the present invention;

[0036] Figure 6 It is a structural schematic diagram of the cooling mechanism of the present invention;

[0037] Figure 7 It is a structural schematic diagram of the waterproof membrane mechanism of the present invention;

[0038] Figure 8 It is a structural schematic diagram of the regulating assembly of the present invention;

[0039] Fig. 9 It is a schematic structural diagram of the scraping assembly of the present invention.

[0040] In the figure: 1, bracket; 2, insulator; 3, air pump; 4, connecting mechanism; 41, connecting body; 42, plug block; 43, alignment assembly; 431, rubber lining; 432, alignment seat; 433, docking shell; 434, through-tube; 44, joint plate; 5, detection mechanism; 51, sleeve tube; 52, inner extension ring; 53, outer sheath; 54, heat shrink tube; 6, cooling mechanism; 61, spiral sheet; 62, detection device; 63, thermal conductive silicone tube; 64, plastic tube; 65, polyethylene tube; 66, hemp rope; 7, waterproof membrane mechanism; 71, optical axis slide rod; 72, shrink shell; 73, adjustment assembly; 731, fixed body; 732, protective shell; 733, spring; 734, spherical plug; 74, hinged table; 75, scraper assembly; 751, slotted tube; 752, expansion ring; 753, fixed rod; 754, scraper ring. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0042] First embodiment: Figure 2 , Figure 5 , Figure 6 As shown, the present invention provides a technical solution: a corrosion-resistant and waterproof overhead cable, comprising a polyethylene tube 65, wherein an aluminum stranded wire is fixedly connected inside the polyethylene tube 65, a plastic tube 64 is fixedly connected to the outer surface of the polyethylene tube 65, a hemp rope 66 is fixedly connected inside the plastic tube 64, a heat-conducting silicone tube 63 is fixedly connected to the outer surface of the plastic tube 64, and a spiral sheet 61 is fixedly connected to the outer surface of the heat-conducting silicone tube 63, and further comprising:

[0043] A detection mechanism 5, which is fixedly mounted on the outer surface of the spiral sheet 61, and is used to wrap and protect the spiral sheet 61 and detect cracks and water leakage on the cable surface;

[0044] The connecting mechanism 4 is fixedly mounted on the outer surface of the detection mechanism 5, and is used for connecting and supporting the detection mechanism 5 and conveying and introducing the gas inside the detection mechanism 5;

[0045] The waterproof membrane mechanism 7 is fixedly installed above the surface of the connecting mechanism 4, and the waterproof membrane mechanism 7 reciprocates on the surface of the detection mechanism 5 to promote the breaking of the water film and the scraping of the surface oxide;

[0046] The detection mechanism 5 includes a sleeve tube 51, an inner side surface of the sleeve tube 51 is fixedly connected to an inner extension ring 52, an outer surface of the inner extension ring 52 is respectively fixedly connected to an outer sheath 53 and a heat shrink tube 54, an inner side surface of the heat shrink tube 54 is fixedly mounted on the outer surface of a spiral sheet 61, and a detector 62 is fixedly connected to the surface of the spiral sheet 61;

[0047] The inside of the plastic tube 64 is filled with silicone filler, the position between the heat-conductive silicone tube 63 and the plastic tube 64 is filled with heat-conductive insulating paint, and the position between the heat-shrinkable tube 54 and the outer sheath 53 is filled with silicone filler.

[0048] When in use, the bracket 1 is fixedly installed on the surface of the transmission tower, the air pump 3 is connected to the connecting mechanism 4, the air pump 3 is used to control the introduction and discharge of gas inside the detection mechanism 5, the sleeve tube 51 connects multiple outer sleeves 53, and the inner side surface of the inner extension ring 52 is tightly fitted with the surface of the thermal conductive silicone tube 63, and a gap is formed between the two insulators 2. The gas is transported from one side of the gap to the inside of the sleeve tube 51, and the gas flows along the spiral sheet 61 to the insulator 2 on the other side. The obstruction of the inner extension ring 52 allows the gas to be discharged through the air pump 3, and the flowing gas flows along the spiral sheet 61. The humidity inside the gas is detected by the detector 62. When cracks appear on the surface of the outer sleeve 53 and the heat shrink tube 54 and water leaks, the humidity increases when the gas flows through the detector 62. The data difference of multiple detectors 62 can roughly locate the location of the cracks, without the need for manual regular inspection, which solves the problem of corrosion requiring regular inspection and maintenance and increasing the cost of line maintenance.

[0049] Second embodiment: Figure 3 , Figure 4As shown, the connection mechanism 4 includes a connection body 41, a plug block 42 is fixedly connected to the bottom of the connection body 41, an alignment component 43 is fixedly connected to the surface of the plug block 42, the inner side surface of the alignment component 43 is in close contact with the surface of the outer sheath 53, and the connection mechanism 4 also includes a joint plate 44, there are two joint plates 44, the two joint plates 44 are symmetrically fixedly installed on both sides of the alignment component 43, and the inner side surface of the joint plate 44 is slidably connected to the surface of the outer sheath 53;

[0050] The alignment component 43 includes a rubber lining 431, the inner side of the rubber lining 431 is in close contact with the surface of the outer sheath 53, the outer surface of the rubber lining 431 is fixedly connected to an alignment seat 432, and the outer surface of the alignment seat 432 is fixedly connected to a docking shell 433. The alignment component 43 also includes a through tube 434, one end of which passes through the surface of the docking shell 433 and extends to the inside of the outer sheath 53. The through tube 434 is used to transport and discharge the gas inside the outer sheath 53.

[0051] When in use, dry gas is introduced into the interior of the outer sheath 53 through the through-tube 434 at one end, and the dry gas flows along the spiral sheet 61 to the through-tube 434 on the other side. The two alignment seats 432 move toward each other and approach the outer sheath 53 to clamp and support the outer sheath 53. The two connecting plates 44 slide close to the docking shell 433. The arc structure of the docking shell 433 enables the alignment seat 432 and the connecting plate 44 to be firmly connected. The plug 42 is clamped by the two alignment seats 432. The connector 41 is fixedly connected to the bottom of the insulator 2, so that the cable can be quickly installed on the insulator 2. The rubber lining 431 is in close contact with the surface of the outer sheath 53 as an inner lining and supports it, so as to protect the outer sheath 53. At the same time, the rubber material makes it possible for the outer sheath 53 to sway due to wind, and the vibration can be absorbed by the rubber lining 431, so that the outer sheath 53 and the heat shrink tube 54 are not prone to fatigue cracks, and the inner part of the outer sheath 53 and the heat shrink tube 54 are less prone to water seepage and corrosion.

[0052] The third embodiment: Figure 3-Figure 6 As shown, a plug block 42 is fixedly connected to the bottom of the connector 41, an alignment component 43 is fixedly connected to the surface of the plug block 42, the inner side surface of the alignment component 43 is in close contact with the surface of the outer sheath 53, the connecting mechanism 4 also includes a connecting plate 44, there are two connecting plates 44, the two connecting plates 44 are symmetrically fixedly installed on both sides of the alignment component 43, the inner side surface of the connecting plate 44 is slidingly connected to the surface of the outer sheath 53, the inner side surface of the sleeve tube 51 is fixedly connected to the inner extension ring 52, the outer surface of the inner extension ring 52 is respectively fixedly connected to the outer sheath 53 and the heat shrink tube 54, the inner side surface of the heat shrink tube 54 is fixedly installed on the outer surface of the spiral piece 61, and the surface of the spiral piece 61 is fixedly connected to the detector 62.

[0053] When in use, if water enters the position between the heat shrink tube 54 and the thermal conductive silicone tube 63, it will cause power transmission safety problems. The position between the outer sheath 53 and the heat shrink tube 54 is filled with silicone filler. The outer sheath 53, the heat shrink tube 54 and the silicone filler layer form a waterproof and anti-corrosion layer. The spiral sheet 61 is sleeved between the heat shrink tube 54 and the thermal conductive silicone tube 63. Pins are penetrated on the surface of the sleeve tube 51, and the pins extend to the inside of the silicone filler layer. It is not easy to produce gaps when multiple outer sheaths 53 are joined, which makes the overhead cable more waterproof and corrosion-resistant. The inner extension ring 52 extends to the thermal conductive silicone On the surface of the tube 63, the position between the two inner extension rings 52 is limited by the spiral sheet 61 to form a spiral airflow channel, and multiple detectors 62 are evenly arranged inside the spiral airflow channel. With the introduction of dry gas, the dry gas flows through the spiral airflow channel to carry the moist water vapor. The value of the detector 62 is used to determine the approximate damage position of the cable, thereby reducing the maintenance cost of the cable. The gas is transported and discharged within a certain distance, so that the accuracy of gas detection humidity is higher. At the same time, the flow of gas makes it easier to remove the heat from the wire core, and the low temperature makes the cable more anti-corrosion.

[0054] Fourth embodiment: Figure 3-Figure 7 As shown, a plug block 42 is fixedly connected to the bottom of the connector 41, and an alignment component 43 is fixedly connected to the surface of the plug block 42. The inner side surface of the alignment component 43 is in close contact with the surface of the outer sheath 53. The connecting mechanism 4 also includes a coupling plate 44. There are two coupling plates 44. The two coupling plates 44 are symmetrically fixedly installed on both sides of the alignment component 43. The inner side surface of the coupling plate 44 is slidably connected to the surface of the outer sheath 53. The waterproof membrane mechanism 7 includes an optical axis slide bar 71. The optical axis slide bar 71 is fixedly installed at an upper position on the surface of the connecting mechanism 4. The output ends of the optical axis slide bar 71 are respectively fixedly connected to a shrinking shell 72 and an adjusting component 73. The bottom of the adjusting component 73 is rotatably connected to a hinged platform 74. The bottom of the hinged platform 74 is provided with a scraping component 75.

[0055] When in use, the output end of the optical axis slide bar 71 makes reciprocating linear movement, and the tapered conical shape of the tapered shell 72 prevents impurities adhering to the surface of the optical axis slide bar 71 from interfering with it when it moves. The outer sheath 53 is connected and supported by the alignment component 43, and as the optical axis slide bar 71 is driven, the scraper component 75 slides back and forth on the surface of the outer sheath 53. The adjustment component 73 is connected to the position between the optical axis slide bar 71 and the scraper component 75. Since the axis of the outer sheath 53 will bend downward, the scraper component 75 will move up and down while moving horizontally. The variable length of the adjustment component 73 allows the scraper component 75 to have a retreat space in the height direction. The hinged platform 74 is rotatably connected to the adjustment component 73. Since the outer sheath 53 will bend downward, the rotatable connection method makes it difficult for the scraper component 75 to get stuck when moving horizontally and up and down, and the water film and oxide are scraped off in time, which solves the problem that the oxide layer and water film on the cable surface will cause cable corrosion, and the problem that cracks will be generated under stress, causing accelerated oxidation of the aluminum conductor.

[0056] Fifth embodiment: Figure 7-Figure 9 As shown, the adjustment component 73 includes a fixed body 731, the top of the fixed body 731 is fixedly mounted on the bottom of the output end of the optical axis slide bar 71, the surface of the fixed body 731 is fixedly connected with a protective shell 732, and the adjustment component 73 also includes a spring 733, the top of the spring 733 is fixedly mounted on the top of the inner side of the protective shell 732, the bottom of the spring 733 is fixedly connected with a spherical plug 734, and the surface of the spherical plug 734 is rotatably connected to the inner side of the hinge platform 74;

[0057] The scraper assembly 75 includes a slotted tube 751, the inner side surface of the slotted tube 751 is sleeved on the outer surface of the outer sheath 53, the surface of the slotted tube 751 is grooved, and the end surface of the slotted tube 751 is fixedly connected to a flaring ring 752 by welding. The scraper assembly 75 also includes a fixing rod 753, the end surface of the fixing rod 753 is fixedly installed on the surface of the slotted tube 751 near the slot, and the end of the fixing rod 753 away from the slotted tube 751 is fixedly connected to a scraper ring 754.

[0058] When in use, the spring 733 is arranged inside the protective shell 732. When the optical axis slide bar 71 drives the protective shell 732 to move horizontally, the scraper ring 754 is closely fitted with the surface of the outer sheath 53, and the scraper ring 754 scrapes off the water film and oxide on the surface of the outer sheath 53. Because the outer sheath 53 bends downward under the action of gravity, the spring 733 is driven to stretch and compress inside the protective shell 732, and the spherical plug 734 slides up and down on the inner side of the protective shell 732. The restriction of the protective shell 732 makes the spherical plug 734 It will not deflect under the influence of resistance, and the scraper ring 754 is less likely to get stuck when moving. The support of the fixed rod 753 allows a gap to exist between the scraper ring 754 and the inner side of the slotted tube 751. After the water film and oxide are scraped away by the scraper ring 754, they will pass through the gap and move away with the airflow. The slotted tube 751 is fixedly connected with a flaring ring 752 on both sides. When the gas passes through the flaring ring 752, the flow rate is faster, making it easier to remove the water film and oxide on the surface of the fixed rod 753, and the corrosion resistance and waterproof performance of the cable surface are better.

[0059] Sixth embodiment: Figure 1-9 As shown, a method for preparing a corrosion-resistant and waterproof overhead cable comprises the following steps:

[0060] Step 1, wire core manufacturing, at room temperature, drawing the aluminum rod into aluminum wire, heating and heat preservation of the aluminum wire, and then naturally cooling the aluminum wire, twisting the aluminum wire by twisting multiple single wires to form an aluminum stranded wire, and using a traction machine to pull the aluminum stranded wire to be coated with cross-linked polyethylene inside the injection molding extruder to complete the preparation of the conductor wire core;

[0061] Step 2: Forming the skeleton structure: Put plastic and rubber particles into the injection molding extruder, and the hot melt plastic is formed into a plastic tube 64 through a die. The three conductor cores are respectively passed through the plastic tube 64, and then the hemp rope 66 is inserted into the inside of the plastic tube 64. The heat-conducting silicone tube 63 is sleeved through the outer surface of the plastic tube 64, and silicone filler is poured into the inside of the plastic tube 64. Heat-conducting insulating paint is poured into the inside of the heat-conducting silicone tube 63, and cooled to shape;

[0062] Step 3: Heat shrink wrapping molding: pass the cable skeleton in step 2 through the spiral piece 61, weld a plurality of detectors 62 on the surface of the spiral piece 61, pass the heat shrink tube 54 through the spiral piece 61, heat the whole structure, heat and shrink the heat shrink tube 54 to tightly wrap the spiral piece 61, pass the outer sheath 53 through the heat shrink tube 54 and fill the gap with silicone filler, and the sleeve tube 51 is tightly connected with the silicone filler;

[0063] Step 4, installation of the waterproof structure, fix the optical axis slide bar 71 on the surface of the coupling plate 44, fix the adjustment component 73 on the output end of the optical axis slide bar 71 by welding, slide the scraper component 75 to the outer surface of the outer sheath 53, the surface of the scraper component 75 is in close contact with the outer surface of the outer sheath 53, fix the hinged platform 74 on the top of the scraper component 75, and the bottom of the adjustment component 73 is rotatably installed on the inner side of the hinged platform 74.

[0064] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by... does not exclude the existence of other identical elements in the process, method, article or device including the element".

Claims

1. A corrosion-resistant and waterproof overhead cable, comprising a polyethylene tube (65), characterized in that: The polyethylene tube (65) is fixedly connected to an aluminum stranded wire inside, the polyethylene tube (65) is fixedly connected to a plastic tube (64) on its outer surface, the plastic tube (64) is fixedly connected to a hemp rope (66) inside, the plastic tube (64) is fixedly connected to a heat-conducting silicone tube (63) on its outer surface, and the heat-conducting silicone tube (63) is fixedly connected to a spiral sheet (61) on its outer surface, and further comprises: A detection mechanism (5), the detection mechanism (5) being fixedly mounted on the outer surface of the spiral sheet (61), the detection mechanism (5) being used to wrap and protect the spiral sheet (61) and detect cracks and water leakage on the cable surface; A connecting mechanism (4), the connecting mechanism (4) being fixedly mounted on the outer surface of the detection mechanism (5), the connecting mechanism (4) being used for connecting and supporting the detection mechanism (5) and for conveying and introducing gas inside the detection mechanism (5); A waterproof membrane mechanism (7), the waterproof membrane mechanism (7) being fixedly mounted above the surface of the connecting mechanism (4), and the waterproof membrane mechanism (7) being reciprocated on the surface of the detection mechanism (5) to promote the breaking of the water film and the scraping off of the surface oxides; The detection mechanism (5) comprises a sleeve tube (51), the inner side surface of the sleeve tube (51) is fixedly connected to an inner extension ring (52), the outer surface of the inner extension ring (52) is respectively fixedly connected to an outer sheath (53) and a heat shrink tube (54), the inner side surface of the heat shrink tube (54) is fixedly mounted on the outer surface of a spiral sheet (61), and the surface of the spiral sheet (61) is fixedly connected to a detector (62).

2. The corrosion-resistant and waterproof overhead cable according to claim 1, characterized in that: The interior of the plastic tube (64) is filled with silicone filler, the position between the heat-conductive silicone tube (63) and the plastic tube (64) is filled with heat-conductive insulating paint, and the position between the heat-shrinkable tube (54) and the outer sheath (53) is filled with silicone filler.

3. A corrosion-resistant and waterproof overhead cable according to claim 2, characterized in that: The connecting mechanism (4) comprises a connecting body (41), a plug block (42) being fixedly connected to the bottom of the connecting body (41), an alignment component (43) being fixedly connected to the surface of the plug block (42), and an inner side surface of the alignment component (43) being in close contact with the surface of the outer sheath (53).

4. A corrosion-resistant and waterproof overhead cable according to claim 3, characterized in that: The connection mechanism (4) further comprises a joining plate (44), wherein there are two joining plates (44), the two joining plates (44) are symmetrically fixedly mounted on two sides of the alignment component (43), and the inner side surfaces of the joining plates (44) are slidably connected to the surface of the outer sheath (53).

5. The corrosion-resistant and waterproof overhead cable according to claim 4, characterized in that: The waterproof membrane mechanism (7) comprises an optical axis slide bar (71), the optical axis slide bar (71) being fixedly mounted above the surface of the connection mechanism (4), the output ends of the optical axis slide bar (71) being fixedly connected to a shrink shell (72) and an adjustment component (73), respectively, the bottom of the adjustment component (73) being rotatably connected to a hinged platform (74), and the bottom of the hinged platform (74) being provided with a scraping component (75).

6. The corrosion-resistant and waterproof overhead cable according to claim 5, characterized in that: The adjustment assembly (73) comprises a fixed body (731), the top of the fixed body (731) being fixedly mounted on the bottom of the output end of the optical axis slide bar (71), and the surface of the fixed body (731) being fixedly connected to a protective shell (732).

7. The corrosion-resistant and waterproof overhead cable according to claim 6, characterized in that: The adjustment assembly (73) further comprises a spring (733), the top end of the spring (733) being fixedly mounted on the top of the inner side surface of the protective shell (732), the bottom end of the spring (733) being fixedly connected to a spherical plug (734), and the surface of the spherical plug (734) being rotatably connected to the inner side surface of the hinge platform (74).

8. The corrosion-resistant and waterproof overhead cable according to claim 7, characterized in that: The scraping assembly (75) comprises a slotted tube (751), the inner side surface of the slotted tube (751) being sleeved on the outer surface of the outer sheath (53), the surface of the slotted tube (751) being provided with slots, and the end surface of the slotted tube (751) being fixedly connected to a flaring ring (752) by welding.

9. The corrosion-resistant and waterproof overhead cable according to claim 8, characterized in that: The scraper assembly (75) further comprises a fixing rod (753), the end face of which is fixedly mounted on a surface of the slotted tube (751) close to the slot, and one end of the fixing rod (753) away from the slotted tube (751) is fixedly connected to a scraper ring (754).

10. A method for preparing a corrosion-resistant and waterproof overhead cable is used to prepare a corrosion-resistant and waterproof overhead cable as claimed in claim 9, characterized in that: The following steps are involved: Step 1, wire core manufacturing, at room temperature, drawing the aluminum rod into aluminum wire, heating and heat preservation of the aluminum wire, and then naturally cooling the aluminum wire, twisting the aluminum wire by twisting multiple single wires to form an aluminum stranded wire, and using a traction machine to pull the aluminum stranded wire to be coated with cross-linked polyethylene inside the injection molding extruder to complete the preparation of the conductor wire core; Step 2, forming the skeleton structure, putting plastic and rubber particles into an injection molding extruder, the hot melt plastic is formed into a plastic tube (64) through a die, three conductor cores are respectively passed through the plastic tube (64), then the hemp rope (66) is passed into the inside of the plastic tube (64), the heat conductive silicone tube (63) is sleeved through the outer surface of the plastic tube (64), silicone filler is poured into the inside of the plastic tube (64), and heat conductive insulating paint is poured into the inside of the heat conductive silicone tube (63), and cooled to shape; Step 3: heat shrink wrapping, passing the cable skeleton in step 2 through the spiral sheet (61), welding a plurality of detectors (62) on the surface of the spiral sheet (61), passing the heat shrink tube (54) through the spiral sheet (61), heating the entire structure, causing the heat shrink tube (54) to shrink and tightly wrap the spiral sheet (61), passing the outer sheath (53) through the heat shrink tube (54) and filling the gap with silicone filler, and tightly joining the sleeve tube (51) with the silicone filler; Step 4: Install the waterproof structure. The optical axis slide bar (71) is fixedly mounted on the surface of the joint plate (44). The adjustment component (73) is fixedly mounted on the output end of the optical axis slide bar (71) by welding. The scraping component (75) is slid to the outer surface of the outer sheath (53). The surface of the scraping component (75) is in close contact with the outer surface of the outer sheath (53). The hinged platform (74) is fixedly mounted on the top of the scraping component (75). The bottom of the adjustment component (73) is rotatably mounted on the inner side surface of the hinged platform (74).

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