CN217468052U - High and low temperature resistant cable for unmanned aerial vehicle - Google Patents

Abstract

The utility model discloses an unmanned aerial vehicle is with high low temperature resistant cable, including many conductor cores, insulating layer and heat-resistant layer, many outer cladding of conductor core are equipped with the insulating layer, the outer cladding of insulating layer is equipped with the heat-resistant layer, many conductor cores hug closely the setting on the circumference outer wall of tuber pipe, the heat insulating material is filled in the clearance between many conductor cores, insulating layer and the tuber pipe, follows spiral winding accompanies the tropical on the length direction of insulating layer. By adopting the technical scheme, the plurality of conductor cores are tightly attached to the circumferential outer wall of the air pipe, heat generated by electrifying the plurality of conductor cores is convenient to transfer to the air pipe, the central air hole of the air pipe is convenient to exchange heat and discharge accumulated heat, and the accumulated heat is prevented from damaging the plurality of conductor cores; the heat-resistant layer is characterized in that the heat-resistant layer is spirally wound along the length direction of the heat-insulating layer, and the spirally wound heat-resistant layer is electrified to generate heat uniformly, so that heat uniformly generated is transferred to the heat-resistant layer and the outer protective layer, and the outer protective layer is prevented from cracking under an external low-temperature environment.

Description

High and low temperature resistant cable for unmanned aerial vehicle

Technical Field

The utility model relates to the technical field of cables, concretely relates to unmanned aerial vehicle is with high low temperature resistant cable.

Background

Mooring unmanned aerial vehicle is the one of unmanned aerial vehicle type, mainly comprises many rotor unmanned aerial vehicle, mooring cable, ground take-off and landing platform, and unmanned aerial vehicle uses the long-time stagnation of ground power supply to hang and stop, and simultaneously, data such as the high definition video of airborne equipment collection can be passed back to ground through the built-in optic fibre of mooring cable, have aerial long-time operation, the big advantage of data transmission bandwidth.

Mooring unmanned aerial vehicle stagnation suspension position receives climatic environment's influence, and the cable needs to adapt to and uses under the high low temperature climatic environment, and current cable is under lower temperature climatic environment, and the outer inoxidizing coating of cable ftractures easily, and the cable is under higher temperature climatic environment, and the outside high temperature heat of cable influences the conductor core to and the influence that conductor core self circular telegram generated heat, with higher speed the conductor core damage, reduced cable life.

In the prior art, a chinese patent with publication number CN209625874U discloses a "high and low temperature resistant cable for unmanned aerial vehicle", which is characterized in that glass fibers are filled between core wires and a heat insulation layer, and aerogel material and glass fibers of the heat insulation layer both have low thermal conductivity coefficients, so that the core wires can be isolated from high and low temperatures outside the cable, but the core wires are covered by the glass fibers, and the heat dissipated by the core wires when the core wires are electrified and heated is limited, so that the conductor cores are easily damaged; in addition, the heating wire is positioned in the outer protective layer, the heating wire generates heat after being electrified to heat the outer protective layer, the phenomenon that the outer protective layer of the cable is cracked in a low-temperature climate environment is avoided, the heating wire is used as a heating element to heat quickly and converts electric energy into heat energy with higher temperature, the first water pipe is positioned in the outer protective layer and regulates the heating temperature of the outer protective layer, the production cost investment of the cable is increased, and the self weight of the cable is increased;

in the prior art, a chinese patent with publication number CN214410857U discloses a "light high and low temperature resistant cable for unmanned aerial vehicle", when the ambient temperature of the cable becomes cold, the heat tracing band is a self-temperature-limiting electric heat tracing band, the heat tracing band heats the outer sheath, the outer sheath is maintained at normal temperature, and the outer sheath is prevented from being frozen and cracked in a low temperature environment; the inside water of conductor is cold pipe a little takes away the heat that the conductor produced rapidly, avoids inside heart yearn to take place to damage under high temperature, but the water is cold pipe a little in the cooling use, produces the water film because of the difference in temperature easily between water cold pipe a little and the conductor contact surface, and the water film evaporation leads to the interference between the adjacent conductor even electricity easily, influences the use of cable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an unmanned aerial vehicle is with resistant high low temperature cable for solve the cable under lower temperature climate environment, the easy phenomenon of fracture of cable outer inoxidizing coating, and the cable is under higher temperature climate environment, the outside high temperature heat of cable and the influence that conductor core self circular telegram generated heat.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides an unmanned aerial vehicle is with resistant high low temperature cable, includes many conductor cores, insulating layer and heat-resistant layer, the outer cladding of many conductor cores is equipped with the insulating layer, the outer cladding of insulating layer is equipped with the heat-resistant layer, many conductor cores hug closely the setting on the circumference outer wall of tuber pipe, the clearance between many conductor cores, insulating layer and the tuber pipe is filled thermal insulation material, follows spiral winding tracing band in the length direction of insulating layer.

As a further aspect of the present invention: and a plurality of fins of an integrated structure are uniformly distributed on the circumferential outer wall of the air pipe, and two side surfaces of each fin are respectively clung to adjacent conductor cores.

As a further aspect of the present invention: the air pipe is a nylon material pipe.

As a further aspect of the present invention: the heat insulation layer is an aerogel felt material layer.

As a further aspect of the present invention: the heat-resistant layer is an ethylene-tetrafluoroethylene copolymer material layer.

As a further aspect of the present invention: the heat insulation material is polyurethane rigid foam.

As a further aspect of the present invention: an outer protective layer is coated outside the heat-resistant layer and is a polytetrafluoroethylene material layer.

The utility model has the advantages that:

(1) the heat insulation layer and the heat insulation material play a role in heat insulation and protection of the plurality of conductor cores, so that high-temperature heat or low-temperature heat outside the cable is prevented from being transferred to the plurality of conductor cores, and the use of the plurality of conductor cores is prevented from being influenced;

(2) the plurality of conductor cores are arranged on the circumferential outer wall of the air pipe in a clinging manner, heat generated by the plurality of conductor cores when the conductor cores are electrified is convenient to transfer to the air pipe, and the central air hole of the air pipe is convenient for heat exchange and discharge of accumulated heat, so that the plurality of conductor cores are prevented from being damaged by the accumulated heat;

(3) the heat tracing band is spirally wound along the length direction of the heat insulation layer, and the spirally wound heat tracing band is electrified to heat uniformly, so that uniformly generated heat is transferred to the heat-resistant layer and the outer protective layer, and the outer protective layer is prevented from cracking under the external low-temperature environment.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic cross-sectional view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a schematic view of the duct of the present invention.

In the figure: 100. a conductor core; 200. a thermal insulation layer; 300. a heat-resistant layer; 400. an air duct; 410. a fin; 500. a heat tracing band; 600. a thermal insulation material; 700. and an outer protective layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention relates to a high and low temperature resistant cable for an unmanned aerial vehicle, which includes a plurality of conductor cores 100, a heat insulation layer 200 is coated outside the plurality of conductor cores 100, the plurality of conductor cores 100 are tightly attached to the outer circumferential wall of an air duct 400, and a heat insulation material 600 is filled in the gap between the plurality of conductor cores 100, the heat insulation layer 200 and the air duct 400; the heat insulation layer 200 and the heat insulation material 600 play a role in heat insulation and protection of the plurality of conductor cores 100, so that high-temperature heat or low-temperature heat outside the cable is prevented from being transmitted to the plurality of conductor cores 100, and the use of the plurality of conductor cores 100 is prevented from being influenced; in addition, heat generated by electrifying the plurality of conductor cores 100 is convenient to transfer to the air pipe 400, and the central air hole of the air pipe 400 is convenient to exchange heat and discharge the accumulated heat, so that the accumulated heat is prevented from damaging the plurality of conductor cores 100.

In this embodiment, a plurality of fins 410 of an integrated structure are uniformly distributed on the circumferential outer wall of the air duct 400, two side surfaces of each fin 410 are respectively attached to adjacent conductor cores 100, and the fins 410 are used for limiting and isolating the conductor cores 100, so that interference and electrification between adjacent conductors are avoided, the use of cables is prevented from being influenced, and the fins 410 are helpful for increasing the contact area between the air duct 400 and the conductor cores 100, and accelerating heat dissipation and discharge; the air pipe 400 made of nylon has high mechanical strength, good toughness and higher tensile strength and compressive strength, and is beneficial to enhancing the bending use performance of the cable.

In this embodiment, the thermal insulation layer 200 is an aerogel blanket material layer, and the aerogel blanket thermal insulation layer 200 is made of silica aerogel as a main material and compounded in a reinforcing fiber, such as a glass fiber and a pre-oxidized fiber, and has low thermal conductivity, certain tensile strength and compressive strength, and good thermal insulation protection for the inside and the outside of the conductor core 100; the heat insulation material 600 is polyurethane rigid foam, has low heat conductivity coefficient of only 0.022-0.033W/(K.m), and is convenient for heat insulation filling.

The heat-resistant layer 300 is coated outside the heat-resistant layer 200, the heat-resistant layer 300 is coated outside the outer protective layer 700, the heat-resistant layer 300 and the outer protective layer 700 are used at high temperature in a high-temperature environment in a resistance mode, the heat tracing band 500 is spirally wound along the length direction of the heat-resistant layer 200 in a low-temperature environment, the spirally wound heat tracing band 500 is uniformly heated by electricity, the heat tracing band 500 is a temperature-control electric heat tracing band which is formed by a conductive polymer composite material, two parallel metal wires and an insulating sheath, when the two parallel metal wires are connected with a power supply, current transversely flows through the conductive polymer composite material layer from one metal wire to the other metal wire to form a parallel loop, the conductive polymer composite material layer is a resistance heating body which is continuously connected between the two parallel metal wires in parallel, electric energy is converted into heat energy, when the temperature of the heat tracing band 500 rises to a corresponding high-resistance region, the resistance is so large that the current is almost blocked, and the temperature of the heat tracing band 500 will reach a high limit and will not rise any more, so that the uniformly generated heat is transferred to the heat-resistant layer 300 and the outer protective layer 700, and the outer protective layer 700 is prevented from cracking in an external low-temperature environment.

In this embodiment, the heat-resistant layer 300 is an ethylene-tetrafluoroethylene copolymer material layer, so that the heat-resistant layer 300 has good heat resistance, chemical resistance and electrical insulation properties, and simultaneously, the radiation resistance and mechanical properties are improved to a great extent, and the tensile strength can reach 50MPa, which is 2 times that of polytetrafluoroethylene; the outer protective layer 700 is a polytetrafluoroethylene material layer, the outer protective layer 700 has excellent chemical stability, corrosion resistance, sealing property, high lubrication non-adhesiveness, electric insulation property and good ageing resistance, and the heat-resistant layer 300 and the outer protective layer 700 play a double-layer protection role on the cable.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. The equivalent changes and improvements made according to the application scope of the present invention should be still included in the patent coverage of the present invention.

Claims (7)

1. The utility model provides a high low temperature resistant cable for unmanned aerial vehicle, includes many conductor cores (100), insulating layer (200) and heat-resistant layer (300), many conductor cores (100) outsourcing cladding is equipped with insulating layer (200), insulating layer (200) outsourcing is equipped with heat-resistant layer (300), its characterized in that, many conductor cores (100) are hugged closely and are set up on the circumference outer wall of tuber pipe (400), heat insulating material (600) is filled to the clearance between many conductor cores (100), insulating layer (200) and tuber pipe (400), follows spiral winding companion tropical (500) in the length direction of insulating layer (200).

2. The high and low temperature resistant cable for the unmanned aerial vehicle as claimed in claim 1, wherein a plurality of fins (410) of an integrated structure are uniformly distributed on the circumferential outer wall of the air duct (400), and two side surfaces of each fin (410) are respectively attached to adjacent conductor cores (100).

3. The high and low temperature resistant cable for the unmanned aerial vehicle as claimed in claim 2, wherein the air duct (400) is a nylon tube.

4. The high and low temperature resistant cable for the unmanned aerial vehicle as claimed in claim 1, wherein the thermal insulation layer (200) is a layer of aerogel blanket material.

5. The high and low temperature resistant cable for the unmanned aerial vehicle as claimed in claim 1, wherein the heat resistant layer (300) is an ethylene-tetrafluoroethylene copolymer material layer.

6. The high and low temperature resistant cable for the unmanned aerial vehicle as claimed in claim 1, wherein the heat insulating material (600) is polyurethane rigid foam.

7. The high and low temperature resistant cable for the unmanned aerial vehicle as claimed in claim 1, wherein the heat resistant layer (300) is coated with an outer protective layer (700), and the outer protective layer (700) is a polytetrafluoroethylene material layer.

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