High-temperature-resistant pre-coated conductor thin tape shielded wire

Abstract

This invention discloses a high-temperature resistant pre-coated conductor thin-strip shielded cable, relating to the field of cable manufacturing technology. Several inner support rings are evenly spaced around the outer shielding strip, with three adjacent inner support rings connected by two elliptical rings. An insulating silicone is embedded between two adjacent outer shielding strips, with an inner cooling tube running through the silicone. An insulating sleeve is fitted over the outer shielding strip, and a protective pad is embedded in the gap between the insulating sleeve and the outer shielding strip. A storage bladder is embedded inside the protective pad, and the storage bladder is filled with an anti-collision body. Several aluminum foil sleeves are fitted over the outer side of the insulating sleeve. In this invention, when the cable is subjected to external impact, damage to the conductor, inner shielding strip, and outer shielding strip is avoided. During cable use, the conductor avoids overheating and hindering power transmission, resulting in good economic benefits. Furthermore, in the event of a fire, the two components work together to hinder the spread of fire from four directions, significantly reducing economic losses.

Description

Technical Field

[0001] This invention relates to the field of cable manufacturing technology, specifically to a high-temperature resistant pre-coated conductor thin-tape shielded cloth wire. Background Technology

[0002] Cables are a general term for items such as optical cables and electrical cables. Cables have many uses, mainly for control installation, connecting equipment, transmitting power and so on. They are a common and indispensable item in daily life. High temperature resistant wires and cables are cables that can transmit signals or electrical energy normally at high temperatures.

[0003] In the Chinese patent with announcement number CN222720116U, entitled "A pre-coated conductor thin strip shielded cloth wire with good temperature resistance", the patent still works normally in specific environments such as high temperature, mechanical impact, mechanical vibration, and ultra-low temperature polar regions, and has good acid and oil resistance. Furthermore, the product's application function is not affected by any liquid substance erosion during production, storage, and transportation.

[0004] However, the cables in this patent and existing technologies have poor impact resistance. During cable laying, they cannot effectively protect the internal conductors and shielding layers. Although existing high-temperature resistant cables can work at higher temperatures, they cannot effectively cool the conductors. When the conductors are at higher temperatures, the conductor resistance increases, hindering power transmission and resulting in poor economic efficiency. Furthermore, in the event of a fire, the outer sheath of existing high-temperature resistant cables cannot prevent flames from penetrating into the cable. When the cables are used for information transmission, they cannot provide sufficient emergency rescue time for workers and rescue personnel, leading to significant economic losses. Summary of the Invention

[0005] This invention provides a high-temperature resistant pre-coated conductor thin-tape shielded cable, which can effectively solve the problems in the prior art where existing high-temperature resistant cables cannot effectively protect the internal conductor and shielding layer, cannot effectively cool the conductor, and when the conductor is at a high temperature, the conductor resistance increases, hindering power transmission and resulting in poor economic efficiency. Furthermore, in the event of a fire, the outer sheath of existing high-temperature resistant cables is insufficient to prevent flames from penetrating into the cable, and when the cable is used for information transmission, it cannot provide sufficient emergency rescue time for workers and rescuers, leading to significant economic losses.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-temperature resistant pre-coated conductor thin-strip shielded wire, comprising conductors, wherein three conductors are provided, an inner shielding strip is wound around the outside of the conductors, an insulating layer is wrapped around the outside of the inner shielding strip, an outer shielding strip is wound around the outside of the insulating layer, and a high-temperature resistant protective component is provided on the outside of the outer shielding strip, wherein the high-temperature resistant protective component includes an inner support ring;

[0007] The outer shielding strip is fitted with several inner support rings at equal intervals on its outer side. Three adjacent inner support rings are connected by two elliptical rings. The middle of the elliptical rings is connected to a support tube by several connecting arc pieces. An isolation silicone is embedded between two adjacent outer shielding strips. An inner cooling tube runs through the middle of the isolation silicone and runs through the inside of the support tube.

[0008] An isolation sleeve is fitted over the outer shielding strip. A protective pad is embedded in the gap between the isolation sleeve and the outer shielding strip. Two protective pads are located at the top and bottom of the isolation silicone and are in contact with the isolation silicone. A storage bladder is embedded inside the protective pad. The storage bladder is filled with an anti-collision body. Several aluminum foil sleeves are fitted over the outer side of the isolation sleeve. The aluminum foil sleeves are filled with sodium acetate trihydrate.

[0009] According to the above technical solution, an arc-shaped spring is connected to the outer side of the inner support ring, the insulating silicone is located between two adjacent elliptical rings on the same side, and multiple bends are equally spaced on the surface of the insulating silicone. The two sides of the insulating silicone are attached to the adjacent outer shielding strip.

[0010] According to the above technical solution, a flame-retardant inner tube is connected between two adjacent insulating silicone tubes. The flame-retardant inner tubes are connected by an internal cooling tube. A sealing tube is embedded inside the flame-retardant inner tube, and a side spray nozzle is opened on the surface of the flame-retardant inner tube.

[0011] According to the above technical solution, the aluminum foil sleeve is wrapped with a folding resistant sleeve, the surface of the folding resistant sleeve is uniformly provided with multiple limiting strips, and the surface of the folding resistant sleeve is provided with multiple diffusion ports.

[0012] According to the above technical solution, the folding sleeve is sleeved with several flame-retardant tubings at equal intervals. The flame-retardant tubings are located in the gap between two adjacent limiting strips. The flame-retardant tubings are filled with flame retardant. The limiting strips and the flame-retardant tubings are wrapped with an outer sheath.

[0013] According to the above technical solution, a heat dissipation and fire extinguishing component is provided on the outside of the outer sheath, and the heat dissipation and fire extinguishing component includes a fixing frame;

[0014] The outer sheath is fixed with several fixed brackets at equal intervals on the top and bottom. The two ends of two adjacent fixed brackets are fixedly connected by bolts. The fixed brackets located on the top of the outer sheath are welded with fixed ears. Air and water pipes are fixed between the tops of the fixed ears. A heat dissipation sleeve is connected between two adjacent fixed brackets at the same horizontal level through air and water pipes. A vent connector is connected to the bottom middle of the heat dissipation sleeve. A heat dissipation box is connected to the bottom of the vent connector through a screw hole. Several flow holes are opened at equal intervals on the bottom of the heat dissipation box.

[0015] Water spray holes are provided at both ends of the top of the heat dissipation sleeve. A conversion tube is slidably connected to both ends of the inside of the heat dissipation sleeve. Both ends of the inside of the heat dissipation sleeve are connected to one end of the adjacent conversion tube by a connecting spring. A connecting slide rod is connected to both sides of one end of the conversion tube. The top of the connecting slide rod passes through the heat dissipation sleeve. A connecting lug is welded to both ends of the outside of the heat dissipation sleeve near the connecting slide rod. A hot melt strip is connected between the top of the connecting lug and the top of the adjacent connecting slide rod.

[0016] According to the above technical solution, a fixing seat is fixed to the bottom of the fixing frame located at the bottom of the outer sheath by bolts, and a damping pad is adhered to the bottom of the fixing seat.

[0017] According to the above technical solution, the outer side of the conversion tube is in contact with the inner side of the heat dissipation sleeve, and both the outer side of the conversion tube and the inner side of the heat dissipation sleeve are smooth surfaces. The water spray hole is located on the outer side of the conversion tube.

[0018] According to the above technical solution, fixing screws are welded at the four corners of the top of the fixing frame on the top of the outer sheath, and a heat dissipation plate is connected to the middle of the fixing frame on the top of the outer sheath by a connecting sheet. The heat dissipation plate is in contact with the surface of the outer sheath, and the top of the connecting sheet is fixedly connected to the adjacent fixing screw by a fixing bolt. Multiple heat dissipation fins are welded at equal intervals on the top of the heat dissipation plate.

[0019] According to the above technical solution, one end of the air-water pipe is connected to one end of the tee pipe, and the other two ends of the tee pipe are respectively connected to the water outlet of the external water pump and the air outlet of the external air pump.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. Equipped with high-temperature resistant protective components, if the cable is impacted during installation, the protective pad and insulating silicone can buffer the external force and protect the conductor. The protective pad has an embedded storage bladder filled with a non-Newtonian fluid made of PU4 material. When the cable is impacted, the impactor at the impact point hardens, preventing damage to the conductor, inner shield, and outer shield from the impact. The inner support ring, elliptical ring, arc-shaped spring, connecting arc plate, and support tube are made of copper-aluminum alloy, which can support the cable, protect the conductor, and enhance the cable's compressive strength. Compared with existing technologies, the cable has stronger compressive strength and impact resistance. Furthermore, the copper-aluminum alloy and silicone pad materials have good thermal conductivity, allowing the heat generated by the conductor to be quickly conducted to the copper-aluminum alloy and thermally conductive silicone pad, preventing the accumulation of heat generated by the conductor and avoiding the conductor from hindering power transmission due to excessive temperature. This results in good economic benefits.

[0022] The isolation sleeve, flexural sleeve, and outer sheath are made of ceramicized rubber, which can maintain the integrity of the power transmission line in a fire environment. The flame-retardant tubing is filled with expandable graphite. Under the constraint of the ceramicized shell, the expanding material diffuses to the surroundings through the diffuser. During the expansion process, the expandable graphite absorbs a large amount of heat and effectively isolates the flame and oxygen, slowing down the rate at which the flame penetrates into the cable. In the event of a fire, the cable can maintain power and data transmission for a period of time. The aluminum foil sleeve is filled with sodium acetate trihydrate. When the cable burns, the sodium acetate trihydrate absorbs heat and gradually changes from solid to liquid. During the process of solid to liquid, the aluminum foil sleeve is cooled. In the event of a fire, the aluminum foil sleeve not only blocks the external flames but also prevents the temperature inside the aluminum foil sleeve from rising rapidly, providing more rescue time for power workers to carry out emergency operations.

[0023] The sealing tube is made of polyethylene wax. When the outside of the cable is hot, the sealing tube will melt completely. A fixed amount of water pumped into the flame-retardant inner tube will spray out from the side nozzle. The sprayed water will wet the surrounding protective pads and insulating silicone. The wetted protective pads and insulating silicone can further slow down the spread of the flame, provide more rescue time for power workers and firefighters, and further reduce economic losses.

[0024] 2. Equipped with a heat dissipation and fire extinguishing system, the system uses an external air pump to drive airflow through the air-water pipes and heat dissipation sleeves. The air pressure inside the heat dissipation sleeves is lower than the external air pressure. Under the action of the pressure difference, external air will enter the heat dissipation sleeves through the flow holes and heat dissipation boxes. The airflow carries away the heat on the cable surface to cool the cable. The connecting fins and heat dissipation plates are attached to the outer sheath, and the heat dissipation fins increase the heat dissipation area of ​​the heat dissipation plate. When external air enters the heat dissipation box and heat dissipation sleeves through the flow holes, the flowing air can quickly carry away the heat on the heat dissipation plate, accelerate the cooling speed of the cable, improve the high temperature resistance of the cable, and ensure the smooth transmission of power.

[0025] When the cable is in a fire environment, the flame melts the heat exchange strip, causing the connecting spring to lose its limit and extend back. The connecting spring then moves the conversion tube to seal the vent joint. At this time, the water spray hole connects with the heat dissipation sleeve. When the external water pump delivers water to the air-water pipe and the heat dissipation sleeve, the delivered water will spray out from the water spray hole to extinguish the fire around the burning cable, slow the spread of the fire, provide firefighters with more rescue time, and reduce economic losses.

[0026] In summary, when a fire occurs, the heat-dissipating fire extinguishing component melts the heat-fusion strip, the conversion pipe seals the vent joint, and the delivered water sprays out from the spray nozzle to extinguish the fire around the burning cable. The high-temperature protective component, with its isolation sleeve, flexural sleeve, and outer sheath made of ceramicized rubber, can maintain the integrity of the power transmission line in the early stages of cable combustion. The sodium acetate trihydrate filling inside the aluminum foil sleeve can prevent flames from approaching the conductor. After the sealing tube melts, the sprayed water wets the surrounding protective pads and insulating silicone, further preventing flames from approaching the conductor. The two components work together to hinder the spread of fire from four aspects, providing more rescue time for power workers and firefighters and significantly reducing economic losses. Attached Figure Description

[0027] 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.

[0028] In the attached diagram:

[0029] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0030] Figure 2 This is a schematic diagram of the installation structure of the fixing frame of the present invention;

[0031] Figure 3 This is a schematic diagram of the high-temperature resistant protective component of the present invention;

[0032] Figure 4 This is a schematic diagram of the installation structure of the aluminum foil sleeve of the present invention;

[0033] Figure 5 This is a schematic diagram of the installation structure of the isolation sleeve of the present invention;

[0034] Figure 6 This is a schematic diagram of the installation structure of the protective pad of the present invention;

[0035] Figure 7 This is a schematic diagram of the installation structure of the elliptical ring of the present invention;

[0036] Figure 8 This is a schematic diagram of the installation structure of the silicone insulating material of the present invention;

[0037] Figure 9 This is a schematic diagram of the installation structure of the flame-retardant inner tube of the present invention;

[0038] Figure 10 This is a schematic diagram of the installation structure of the sealing tube of the present invention;

[0039] Figure 11 This is a schematic diagram of the structure of the heat dissipation and fire extinguishing component of the present invention;

[0040] Figure 12 This is a schematic diagram of the installation structure of the heat sink box of the present invention;

[0041] Figure 13 This is a schematic diagram of the installation structure of the conversion tube of the present invention;

[0042] Figure 14 This is a schematic diagram of the installation structure of the fixing base of the present invention;

[0043] The diagram labels are: 1. Conductor; 2. Inner shielding strip; 3. Insulating layer; 4. Outer shielding strip.

[0044] 5. High-temperature resistant protective components; 501. Inner support ring; 502. Elliptical ring; 503. Arc-shaped spring; 504. Connecting arc piece; 505. Support tube; 506. Silicone insulating material; 507. Bend; 508. Inner cooling tube; 509. Flame-retardant inner tube; 510. Sealing tube; 511. Side nozzle; 512. Protective pad; 513. Storage bladder; 514. Impact protector; 515. Isolation sleeve; 516. Aluminum foil sleeve; 517. Bending-resistant sleeve; 518. Limiting strip; 519. Diffuser; 520. Flame-retardant hose; 521. Outer sheath;

[0045] 6. Heat dissipation fire extinguishing assembly; 601. Fixing bracket; 602. Fixing base; 603. Damping pad; 604. Fixing ear; 605. Air and water pipe; 606. Heat dissipation sleeve; 607. Vent connector; 608. Heat dissipation box; 609. Flow hole; 610. Water spray hole; 611. Conversion pipe; 612. Connecting spring; 613. Connecting slide rod; 614. Connecting ear; 615. Hot melt strip; 616. Fixing screw; 617. Connecting sheet; 618. Heat dissipation plate; 619. Heat dissipation fins; 620. T-pipe. Detailed Implementation

[0046] 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.

[0047] Example: Figure 1-14As shown, the present invention provides a technical solution for a high-temperature resistant pre-coated conductor thin-strip shielded wire, including a conductor 1, of which three conductors are provided. An inner shielding strip 2 is wrapped around the outside of the conductor 1. An insulation layer 3 is wrapped around the outside of the inner shielding strip 2. An outer shielding strip 4 is wrapped around the outside of the insulation layer 3. A high-temperature resistant protective component 5 is provided on the outside of the outer shielding strip 4. The high-temperature resistant protective component 5 includes an inner support ring 501, an elliptical ring 502, an arc-shaped spring piece 503, a connecting arc piece 504, a support tube 505, a silicone insulating material 506, a bending opening 507, an inner cooling tube 508, a flame-retardant inner tube 509, a sealing tube 510, a side nozzle 511, a protective pad 512, a storage bladder 513, an anti-collision body 514, an isolation sleeve 515, an aluminum foil sleeve 516, a folding resistant sleeve 517, a limiting strip 518, a diffuser 519, a flame-retardant tubing 520, and an outer sheath 521.

[0048] Several inner support rings 501 are evenly spaced on the outer side of the outer shielding strip 4. Three adjacent inner support rings 501 are connected by two elliptical rings 502. A support tube 505 is connected to the middle of the elliptical rings 502 by several connecting arc plates 504. An isolation silicone 506 is embedded between two adjacent outer shielding strips 4. The isolation silicone 506 is located between two adjacent elliptical rings 502 on the same side. Multiple bending holes 507 are evenly spaced on the surface of the isolation silicone 506. The bending holes 507 provide bending space for the isolation silicone 506 to bend. The two sides of the isolation silicone 506 are in contact with the adjacent outer shielding strips 4. The isolation silicone 506 is made of thermally conductive silicone pad material, which has good thermal conductivity and elasticity. The isolation silicone 506 can isolate the outer shielding strips 4 and prevent friction between the outer shielding strips 4.

[0049] An inner cooling pipe 508 runs through the middle of the insulating silicone 506. The inner cooling pipe 508 runs through the inside of the support pipe 505. An arc-shaped spring piece 503 is connected to the outside of the inner support ring 501. The inner support ring 501, the elliptical ring 502, the arc-shaped spring piece 503, the connecting arc piece 504 and the support pipe 505 are made of copper-aluminum alloy, which has good thermal conductivity. The heat generated by the conductor 1 can be quickly conducted to the copper-aluminum alloy. The copper-aluminum alloy has high strength. When the cable is subjected to external pressure, it can support the cable, protect the conductor 1, and enhance the cable's pressure resistance.

[0050] An isolation sleeve 515 is fitted over the outer shielding band 4. A protective pad 512 is embedded in the gap between the isolation sleeve 515 and the outer shielding band 4. Two protective pads 512 are located at the top and bottom of the insulating silicone 506 and are in contact with it. A storage bladder 513 is embedded inside the protective pad 512, and the storage bladder 513 is filled with an anti-collision body 514. Several aluminum foil sleeves 516 are fitted over the outer side of the isolation sleeve 515. The aluminum foil sleeves 516 are filled with sodium acetate trihydrate. The protective pad 512 is also made of thermally conductive silicone pad material, allowing the heat generated by the conductor 1 to be conducted to the protective pad 512. Sodium acetate hydrochloride is solid at room temperature with a melting point of 58 degrees Celsius. Sodium acetate trihydrate undergoes a phase change when the temperature changes. When the temperature of the aluminum foil sleeve 516 exceeds 58 degrees Celsius, sodium acetate trihydrate absorbs heat and gradually changes from solid to liquid. The process of changing from solid to liquid absorbs heat. Only after sodium acetate trihydrate has completely turned into liquid will it continue to heat up. During the process of sodium acetate trihydrate changing from solid to liquid, sodium acetate trihydrate cools the aluminum foil sleeve 516. In the event of a fire, the aluminum foil sleeve 516 not only blocks the external flames but also prevents the internal temperature of the aluminum foil sleeve 516 from rising rapidly.

[0051] A flame-retardant inner tube 509 is connected between two adjacent insulating silicone 506s. The flame-retardant inner tube 509 is connected by an inner cooling tube 508. A sealing tube 510 is embedded inside the flame-retardant inner tube 509. A side nozzle 511 is opened on the surface of the flame-retardant inner tube 509. During the use of the cable, the inner cooling tube 508 is connected to an external circulating water pump. The external water pump can drive the water inside the inner cooling tube 508 to flow. The inner cooling tube 508 is in contact with the insulating silicone 506 and the support tube 505. Under the action of heat conduction, it can cool down the conductor 1, so that the working temperature of the conductor 1 is always in a low working state. The sealing tube 510 is made of polyethylene wax with a melting point of 120 degrees Celsius. When the outside of the cable burns, the high temperature on the outside of the cable will cause the sealing tube 510 to melt completely. At this time, the water in the flame-retardant inner tube 509 will be sprayed out from the side nozzle 511. The sprayed water will wet the surrounding protective pad 512 and insulating silicone 506, slowing down the spread of the flame.

[0052] An aluminum foil sleeve 516 is wrapped with a flexural sleeve 517. Multiple limiting strips 518 are evenly distributed on the surface of the flexural sleeve 517, which limit the degree of cable bending and prevent excessive bending. Multiple diffuser openings 519 are formed on the surface of the flexural sleeve 517. Several flame-retardant tubing 520s are evenly spaced around the flexural sleeve 517, with each flame-retardant tubing 520 located in the gap between adjacent limiting strips 518. An outer sheath 521 covers the limiting strips 518 and the flame-retardant tubing 520. The isolation sleeve 515, flexural sleeve 517, limiting strips 518, and outer sheath 521 are ceramicized. Made of rubber, it retains its elasticity at room temperature. Its residue after combustion is a hard ceramic shell. The hard shell does not melt or drip in a fire environment, and can maintain the integrity of the power transmission line in a fire environment. The flame-retardant tubing 520 is filled with a flame retardant, which is expandable graphite. When heated by fire, the volume expands rapidly into a worm-like structure. The expanded material diffuses to the surroundings through the diffuser 519. During the expansion process, the expandable graphite absorbs a large amount of heat, reducing the surface material temperature. Moreover, the worm-like structure produced after expansion can effectively isolate flames and oxygen, slowing down the rate at which flames penetrate into the cable.

[0053] The outer sheath 521 is provided with a heat dissipation fire extinguishing component 6. The heat dissipation fire extinguishing component 6 includes a fixing frame 601, a fixing base 602, a damping rubber pad 603, a fixing ear 604, an air and water pipe 605, a heat dissipation sleeve 606, a ventilation connector 607, a heat dissipation box 608, a flow hole 609, a water spray hole 610, a conversion pipe 611, a connecting spring 612, a connecting slide rod 613, a connecting ear 614, a heat fusion strip 615, a fixing screw 616, a connecting sheet 617, a heat dissipation plate 618, heat dissipation fins 619, and a three-way pipe 620.

[0054] Several fixing brackets 601 are fixed at equal intervals on the top and bottom of the outer sheath 521. The ends of two adjacent fixing brackets 601 are fixedly connected by bolts. The bottom of the fixing bracket 601 at the bottom of the outer sheath 521 is fixed with a fixing seat 602 by bolts. The bottom of the fixing seat 602 is bonded with a damping pad 603. The fixing seat 602 is used to fix the cable. The damping pad 603 is made of rubber and plays a shock absorption role to prevent external vibration from damaging the cable. The top of the fixing bracket 601 at the top of the outer sheath 521 is welded with a fixing ear 604. The top of the fixing ear 604 is fixed with an air and water pipe 605. Two adjacent fixing brackets 601 at the same horizontal height are connected to a heat dissipation sleeve 606 through the air and water pipe 605. The bottom of the heat dissipation sleeve 606 is connected to a vent connector 607. The bottom of the vent connector 607 is connected to a heat dissipation box 608 through a screw hole. The bottom of the heat dissipation box 608 is provided with several flow holes 609 at equal intervals.

[0055] The heat dissipation sleeve 606 has water spray holes 610 at both ends of the top. The heat dissipation sleeve 606 has a conversion tube 611 slidably connected to both ends inside. The heat dissipation sleeve 606 has both ends connected to one end of the adjacent conversion tube 611 through the connecting spring 612. The conversion tube 611 has connecting slide rods 613 connected to both sides of one end. The top of the connecting slide rod 613 passes through the heat dissipation sleeve 606. The heat dissipation sleeve 606 has connecting ears 614 welded to the side of the outer end of the heat dissipation sleeve 606 near the connecting slide rod 613. The top of the connecting ear 614 is connected to the middle of the top of the adjacent connecting slide rod 613 with a hot melt strip 615.

[0056] The outer side of the conversion pipe 611 is in contact with the inner side of the heat dissipation sleeve 606. Both the outer side of the conversion pipe 611 and the inner side of the heat dissipation sleeve 606 are smooth surfaces. The water spray hole 610 is located on the outer side of the conversion pipe 611. One end of the air-water pipe 605 is connected to one end of the tee pipe 620. The other two ends of the tee pipe 620 are connected to the water outlet of the external water pump and the air outlet of the external air pump, respectively. In normal use, only the external air pump is started. The conversion pipe 611 seals the water spray hole 610. The external air pump drives the air to flow inside the air-water pipe 605 and the heat dissipation sleeve 606. At this time, the air pressure inside the heat dissipation sleeve 606 is lower than the external air pressure. Under the action of the pressure difference, External air enters the heat dissipation sleeve 606 through the flow hole 609 and the heat dissipation box 608. The air flow carries away the heat from the cable surface and cools the cable. When the cable is in a fire environment, the flame melts the heat fusion strip 615, and the connecting spring 612 loses its limit and rebounds and extends. The connecting spring 612 drives the conversion tube 611 to move and seal the vent joint 607. At this time, the water spray hole 610 is connected to the heat dissipation sleeve 606. When the external water pump delivers water to the air-water pipe 605 and the heat dissipation sleeve 606, the delivered water will be sprayed out from the water spray hole 610 to extinguish the fire around the burning cable.

[0057] Fixing screws 616 are welded to the four corners of the top of the fixing bracket 601 located on the top of the outer sheath 521. A heat sink 618 is connected to the middle of the fixing bracket 601 on the top of the outer sheath 521 via a connecting sheet 617. The heat sink 618 is in contact with the surface of the outer sheath 521. The top of the connecting sheet 617 is fixedly connected to the adjacent fixing screw 616 via fixing bolts. Multiple heat sink fins 619 are welded at equal intervals to the top of the heat sink 618. The heat sink fins 619 can increase the heat sink's heat sink capacity. The heat dissipation area of ​​618 increases the heat dissipation speed. The connecting sheet 617, heat dissipation fins 619 and heat dissipation plate 618 are made of copper-aluminum alloy. The connecting sheet 617 and heat dissipation plate 618 are attached to the outer sheath 521. The heat generated by the cable can be conducted to the connecting sheet 617 and heat dissipation plate 618. When external air enters the heat dissipation box 608 and heat dissipation sleeve 606 through the flow hole 609, the flowing air can quickly carry the heat on the heat dissipation plate 618 and accelerate the cooling speed of the cable.

[0058] The working principle and usage process of this invention: When laying cables, fix the fixing seat 602 and the damping pad 603 on the cable bracket or wall, fix the cable with the fixing bracket 601, and after the cable is fixed, use bolts and fixing screws 616 to fix the connecting plate 617 and the heat dissipation plate 618. Then, connect and fix the water pipe 605 and the heat dissipation sleeve 606.

[0059] The protective pad 512 and the insulating silicone 506 are made of thermally conductive silicone. If the cable is impacted during installation, the protective pad 512 and the insulating silicone 506 can buffer the external force and protect the conductor 1. The insulating silicone 506 can also isolate the outer shielding strip 4, preventing friction between the outer shielding strips 4 and effectively protecting the outer shielding strip 4, thus ensuring the shielding performance of the cable conductor 1. The protective pad 512 has an embedded storage bladder 513, which is filled with an anti-collision body 514. The anti-collision body 514 is made of P4U material, a non-Newtonian fluid. When subjected to strong impact, it remains flexible to ensure the cable's flexibility. When the cable is impacted by external force, the impact protector 514 at the impact point hardens to provide rigid support for the cable and prevent damage to conductor 1, inner shielding strip 2, and outer shielding strip 4 caused by external impact. The inner support ring 501, elliptical ring 502, arc-shaped spring 503, connecting arc 504, and support tube 505 are made of copper-aluminum alloy. When the cable is subjected to external pressure, they can support the cable, protect conductor 1, and enhance the cable's pressure resistance. Compared with existing technologies, the cable has stronger pressure resistance and impact resistance.

[0060] The inner support ring 501, elliptical ring 502, arc-shaped spring piece 503, connecting arc piece 504 and support tube 505 are made of copper-aluminum alloy, which has good thermal conductivity. The protective pad 512 and the isolation silicone 506 are made of thermally conductive silicone pad, which also has good thermal conductivity. The heat generated by the conductor 1 during operation can be quickly conducted to the copper-aluminum alloy and thermally conductive silicone pad, preventing the heat generated by the conductor 1 during operation from accumulating and avoiding the conductor 1 from hindering the transmission of electricity due to excessive temperature.

[0061] During normal use of the cable, an external air pump drives the air to flow inside the air-water pipe 605 and the heat dissipation sleeve 606. At this time, the air pressure inside the heat dissipation sleeve 606 is lower than the external air pressure. Under the action of the pressure difference, the external air will enter the heat dissipation sleeve 606 through the flow hole 609 and the heat dissipation box 608. The air flow carries away the heat on the surface of the cable and cools the cable. The connecting sheet 617 and the heat dissipation plate 618 are attached to the outer sheath 521. The heat dissipation fins 619 increase the heat dissipation area of ​​the heat dissipation plate 618. When the external air enters the heat dissipation box 608 and the heat dissipation sleeve 606 through the flow hole 609, the flowing air can quickly carry away the heat on the heat dissipation plate 618, accelerate the cooling speed of the cable, improve the high temperature resistance of the cable, and ensure the smooth transmission of power.

[0062] When external air cooling is insufficient to meet the cable cooling requirements, an external water pump drives the water inside the internal cooling pipe 508 to flow. The internal cooling pipe 508 is in contact with the insulating silicone 506 and the support pipe 505. Under the action of heat conduction, the flowing cold water can cool the conductor 1, so that the working temperature of the conductor 1 is always in a low-temperature working state, which further improves the high temperature resistance of the cable and ensures the smooth transmission of power.

[0063] When the cable is in a fire environment, the flame melts the heat fusion strip 615, the connecting spring 612 loses its limit and rebounds and extends. The connecting spring 612 drives the conversion tube 611 to move and seal the vent joint 607. At this time, the water spray hole 610 is connected to the heat dissipation sleeve 606. When the external water pump delivers water to the air-water pipe 60 and the heat dissipation sleeve 606, the delivered water will be sprayed out from the water spray hole 610 to extinguish the fire around the burning cable, slow the spread of the fire, provide more rescue time for firefighters, and reduce economic losses.

[0064] The isolation sleeve 515, flexural sleeve 517, limiting strip 518, and outer sheath 521 are made of ceramicized rubber, which maintains the elasticity of rubber at room temperature. After combustion, the residue is a hard ceramicized shell. The hard shell does not melt or drip in a fire environment, and can maintain the integrity of the power transmission line in a fire environment. The flame-retardant tubing 520 is filled with a flame retardant, which is expandable graphite. When heated by fire, the volume expands rapidly into a worm-like structure. Under the limitation of the ceramicized shell, the expanded material diffuses to the surroundings through the diffuser 519. The expandable graphite absorbs a large amount of heat during the expansion process, reducing the surface material temperature. The worm-like structure produced after expansion can effectively isolate flames and oxygen, slowing down the speed at which flames penetrate into the cable. In the event of a fire, the cable can maintain power data transmission for a period of time, providing more rescue time for emergency operations by power workers and reducing economic losses.

[0065] The outer side of the isolation sleeve 515 is fitted with several aluminum foil sleeves 516. The aluminum foil sleeves 516 are filled with sodium acetate trihydrate. Sodium acetate trihydrate is solid at room temperature and has a melting point of 58 degrees Celsius. Sodium acetate trihydrate undergoes a phase change when the temperature changes. When the temperature of the aluminum foil sleeves 516 exceeds 58 degrees Celsius, sodium acetate trihydrate absorbs heat and gradually changes from solid to liquid. The process of solid to liquid absorbs heat. Only after sodium acetate trihydrate has completely become liquid will it continue to heat up. During the process of sodium acetate trihydrate changing from solid to liquid, sodium acetate trihydrate cools the aluminum foil sleeves 516. In the event of a fire, the aluminum foil sleeves 516 not only block the external flames but also prevent the internal temperature of the aluminum foil sleeves 516 from rising rapidly, thus providing more rescue time for emergency operations by power workers.

[0066] The sealing tube 510 is made of polyethylene wax with a melting point of 120 degrees Celsius. When the outside of the cable burns, before the flame penetrates the insulating sleeve 515, the high temperature on the outside of the cable causes the sealing tube 510 to completely melt. At this time, an external water pump delivers a measured amount of water into the flame-retardant inner tube 509. The water inside the flame-retardant inner tube 509 is sprayed out from the side nozzle 511. The sprayed water will wet the surrounding protective pad 512 and insulating silicone 506. At this time, the insulation layer 3 on the outside of the conductor 1 is still intact, and the three conductors 1 are in a safe separated state. The sprayed water will not cause the conductors 1 to burn. In the event of a short circuit, to ensure power transmission, when the flame passes through the isolation sleeve 515 and comes into contact with the wetted protective pad 512 and the insulating silicone pad 506, the flame will completely evaporate the moisture inside the protective pad 512 and the insulating silicone pad 506 before reaching their ignition point. Only then can the flame ignite the protective pad 512 and the insulating silicone pad 506, thus preventing the conductor 1 from being endangered by the power transmission safety. This further slows down the spread of the flame, provides more rescue time for power workers and firefighters, and further reduces economic losses.

[0067] In summary, when a fire occurs, after the heat dissipation and extinguishing component 6 melts the heat-fusion strip 615, the conversion pipe 611 seals the vent connector 607, and the water being transported sprays out from the spray hole 610 to extinguish the fire around the burning cable and slow the spread of the fire. In the high-temperature resistant protection component 5, the isolation sleeve 515, the folding sleeve 517, and the outer sheath 521 are made of ceramicized rubber, and the flame-retardant tubing 520 contains expandable graphite, which can initially block the spread of flames into the cable in the early stages of the fire and maintain the integrity of the power transmission line. The aluminum foil sleeve 516 is filled with sodium acetate trihydrate, which can prevent the flames from approaching the conductor 1. After the sealing tube 510 melts, the sprayed water wets the surrounding protective pad 512 and the isolation silicone 506, further preventing the flames from approaching the conductor 1. The two components work together to hinder the spread of the fire from four aspects, providing more rescue time for power workers and firefighters and minimizing economic losses.

[0068] 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. A high temperature resistant pre-coated conductor ribbon shielded wire comprising a conductor (1), characterized in that, The conductor (1) is provided in three parts. The conductor (1) is wrapped with an inner shielding strip (2). The inner shielding strip (2) is wrapped with an insulating layer (3). The insulating layer (3) is wrapped with an outer shielding strip (4). The outer shielding strip (4) is provided with a high-temperature resistant protective component (5). The high-temperature resistant protective component (5) includes an inner support ring (501). The outer shielding strip (4) is fitted with several inner support rings (501) at equal intervals on the outside. Three adjacent inner support rings (501) are connected by two elliptical rings (502). The elliptical rings (502) are connected to a support tube (505) by several connecting arc pieces (504) in the middle. An isolation silicone (506) is embedded in the middle of two adjacent outer shielding strips (4). An inner cooling tube (508) passes through the middle of the isolation silicone (506). The inner cooling tube (508) passes through the inside of the support tube (505). An isolation sleeve (515) is fitted over the outer shielding strip (4). A protective pad (512) is embedded in the gap between the isolation sleeve (515) and the outer shielding strip (4). Two protective pads (512) are located at the top and bottom of the isolation silicone (506) and are in contact with the isolation silicone (506). A storage bladder (513) is embedded inside the protective pad (512). The storage bladder (513) is filled with a shock absorber (514). Several aluminum foil sleeves (516) are fitted over the outer side of the isolation sleeve (515). The aluminum foil sleeves (516) are filled with sodium acetate trihydrate. The aluminum foil sleeve (516) is wrapped with a folding sleeve (517) on the outside. Multiple limiting strips (518) are evenly arranged on the surface of the folding sleeve (517). Several flame-retardant tubing (520) is sleeved on the folding sleeve (517) at equal intervals. The limiting strips (518) and the flame-retardant tubing (520) are wrapped with an outer sheath (521). The outer sheath (521) is provided with a heat dissipation fire extinguishing component (6), which includes a fixing frame (601). The outer sheath (521) is fixed with several fixed brackets (601) at equal intervals on the top and bottom. The two ends of two adjacent fixed brackets (601) are fixedly connected by bolts. The fixed bracket (601) at the top of the outer sheath (521) is welded with a fixed ear (604). A gas and water pipe (605) is fixed between the top ends of the fixed ear (604). A heat dissipation sleeve (606) is connected between two adjacent fixed brackets (601) at the same horizontal level through the gas and water pipe (605). A vent connector (607) is connected to the middle of the bottom of the heat dissipation sleeve (606). A heat dissipation box (608) is connected to the bottom of the vent connector (607) through a screw hole. Several flow holes (609) are opened at equal intervals at the bottom of the heat dissipation box (608). The heat dissipation sleeve (606) has water spray holes (610) at both ends of its top. The heat dissipation sleeve (606) has a conversion tube (611) slidably connected to both ends of its interior. The heat dissipation sleeve (606) has both ends connected to one end of the adjacent conversion tube (611) by a connecting spring (612). The conversion tube (611) has connecting slide rods (613) connected to both sides of one end. The top end of the connecting slide rod (613) passes through the heat dissipation sleeve (606). The heat dissipation sleeve (606) has connecting ears (614) welded to both ends of its outer side near the connecting slide rod (613). A hot melt strip (615) is connected between the top end of the connecting ear (614) and the top end of the adjacent connecting slide rod (613).

2. The high temperature resistant pre-coated conductor ribbon shielded wire of claim 1, wherein, The inner support ring (501) is connected to an arc-shaped spring piece (503) on the outside. The isolation silicone (506) is located between two adjacent elliptical rings (502) on the same side. The surface of the isolation silicone (506) is provided with multiple bends (507) at equal intervals. The two sides of the isolation silicone (506) are attached to the adjacent outer shielding strip (4).

3. The high-temperature resistant pre-coated conductor thin-tape shielded cloth wire according to claim 2, characterized in that, A flame-retardant inner tube (509) is connected between two adjacent insulating silicone tubes (506). The flame-retardant inner tubes (509) are connected by an internal cooling tube (508). A sealing tube (510) is embedded inside the flame-retardant inner tube (509). A side nozzle (511) is opened on the surface of the flame-retardant inner tube (509).

4. The high-temperature resistant pre-coated conductor thin-tape shielded cloth wire according to claim 1, characterized in that, The surface of the folding sleeve (517) is provided with multiple diffuser openings (519).

5. The high-temperature resistant pre-coated conductor thin-tape shielded cloth wire according to claim 4, characterized in that, The flame-retardant tubing (520) is located in the gap between two adjacent limiting strips (518), and the flame-retardant tubing (520) is filled with flame retardant.

6. The high-temperature resistant pre-coated conductor thin-tape shielded cloth wire according to claim 1, characterized in that, The bottom of the fixing bracket (601) located at the bottom of the outer sheath (521) is fixed with a fixing seat (602) by bolts, and a damping pad (603) is bonded to the bottom of the fixing seat (602).

7. The high-temperature resistant pre-coated conductor thin-tape shielded cloth wire according to claim 6, characterized in that, The outer side of the conversion tube (611) is in contact with the inner side of the heat dissipation sleeve (606). Both the outer side of the conversion tube (611) and the inner side of the heat dissipation sleeve (606) are smooth surfaces. The water spray hole (610) is located on the outer side of the conversion tube (611).

8. The high-temperature resistant pre-coated conductor thin-tape shielded cloth wire according to claim 6, characterized in that, Fixing screws (616) are welded at the four corners of the top of the fixing frame (601) located on the top of the outer sheath (521). A heat sink (618) is connected to the middle of the fixing frame (601) located on the top of the outer sheath (521) through a connecting sheet (617). The heat sink (618) is in contact with the surface of the outer sheath (521). The top of the connecting sheet (617) is fixedly connected to the adjacent fixing screw (616) through a fixing bolt. Multiple heat sink fins (619) are welded at equal intervals on the top of the heat sink (618).

9. A high-temperature resistant pre-coated conductor thin-tape shielded cloth wire according to claim 6, characterized in that, One end of the air-water pipe (605) is connected to one end of the three-way pipe (620), and the other two ends of the three-way pipe (620) are respectively connected to the water outlet of the external water pump and the air outlet of the external air pump.

Images