CN219418575U

CN219418575U - Novel aerial cable

Info

Publication number: CN219418575U
Application number: CN202320866425.5U
Authority: CN
Inventors: 房秀杰; 魏博涛; 傅喆; 杨志文; 王新华; 董艳
Original assignee: Tianjin Weida Weihong Cable Science Co ltd
Current assignee: Tianjin Weida Weihong Cable Science Co ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-07-25
Anticipated expiration: 2033-04-18

Abstract

The utility model relates to a novel aerial cable, which comprises a cable core and an insulating protective sleeve, wherein a plurality of heat conduction metal seats are arranged at intervals on the outer side of the insulating protective sleeve; the outer peripheral surfaces of the plurality of heat conduction metal seats are provided with thin metal cavities; the sheet metal cavity is filled with heat conduction oil; a resistance heating element is inserted at any position of the thin metal cavity; the resistance heating element is connected with a power supply through a wire. The outer side of the insulation protection sleeve is provided with a heat conduction metal seat, and a thin sheet metal cavity is connected to the heat conduction metal seat; the heat conducting oil is filled in the thin sheet metal cavity, the resistance heating element is arranged in the thin sheet metal cavity, and when the resistance heating element works, heat can be rapidly transferred to all positions of the thin sheet metal cavity through the heat conducting oil, a higher-temperature environment is formed outside the insulating protective sleeve, and the insulating protective sleeve is prevented from cracking.

Description

Novel aerial cable

Technical Field

The utility model relates to an aerial cable, in particular to an antifreezing anti-crack cable.

Background

In the case of aircraft, the temperature tends to drop to an extremely low temperature due to the altitude of the flight. In this case, if only relying on the thermal insulation capability of the aerial cable itself, it is difficult to ensure that its temperature is at a safe level, because of uncertainty of the air space climate; if the temperature suddenly drops to a level outside the bearable range of the cable, the insulation layer is easily cracked, and short circuit or open circuit is caused. Chinese patent document No. CN211319763U discloses an anti-freeze cable for aviation, which heats an insulation sleeve and the inside thereof by heat generation of a resistance wire, maintaining temperature; however, this is a disadvantage in that: in order to maintain the uniformity of the temperature of each part of the cable, the number of the resistance wires required to be arranged is large, and the length is long, so that the production process is extremely complicated; if the number of the resistance wires is small, the heat transfer speed is low, and the whole insulation sleeve and the inside of the insulation sleeve cannot be heated up rapidly. Therefore, further improvements are needed.

Disclosure of Invention

Therefore, the novel aerial cable provided by the utility model is high in heating efficiency, simple in production mode, low in production cost and reasonable in heat conduction mode, and the defects in the prior art are overcome.

The novel aerial cable comprises a cable core and an insulating protective sleeve, wherein a plurality of heat conduction metal seats are arranged at intervals on the outer side of the insulating protective sleeve; the outer peripheral surfaces of the plurality of heat conduction metal seats are provided with thin metal cavities; the sheet metal cavity is filled with heat conduction oil; a resistance heating element is inserted at any position of the thin metal cavity; the resistance heating element is connected with a power supply through a wire.

Preferably, the sheet metal cavity comprises a lower sheet and an upper sheet; the two ends of the thin metal cavity are blocked by thin metal plates; the lower sheet is fixedly connected with the heat conduction metal seat.

Preferably, the plurality of heat conducting metal seats are uniformly distributed on the outer surface of the insulating protective sleeve; the upper end of the heat conduction metal seat is positioned in the thin metal cavity.

Preferably, the lower sheet and the upper sheet are corrugated sheets; the corrugated grain directions of the lower sheet and the upper sheet are distributed along the circumferential direction of the sheet metal cavity.

Preferably, the resistance heating element comprises at least one; the resistance heating element is a liquid resistor; the upper end of the resistance heating element is positioned at the outer side of the upper sheet.

Preferably, the resistance heating element is immersed in the PTC heater.

Preferably, the outer side of the insulating protective sleeve is covered with heat-insulating cotton; the upper side and the lower side of the heat preservation cotton are respectively connected with the lower layer sheet and the insulation protection sleeve; the heat-insulating cotton is coated around the heat-conducting metal seat.

The utility model has the following beneficial effects: the outer side of the insulation protection sleeve is provided with a heat conduction metal seat, and a thin sheet metal cavity is connected to the heat conduction metal seat; the heat conduction oil is filled in the thin sheet metal cavity, and the resistance heating element is arranged in the thin sheet metal cavity, so that when the resistance heating element works, heat can be rapidly transferred to all positions of the thin sheet metal cavity through the heat conduction oil, a higher-temperature environment is formed outside the insulation protection sleeve, and the insulation protection sleeve is prevented from cracking; the method can be completed only by a small amount of resistance heating elements, and a resistance wire is not required to be longitudinally arranged in the whole cable in a penetrating way, so that the production cost is reduced; meanwhile, heat can be directly transferred to the insulating protective sleeve through the heat conducting metal seat.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

In the figure: 1 is a cable core, 2 is an insulating protective sleeve, 3 is a heat conducting metal seat, 4 is a sheet metal cavity, 41 is a lower sheet, 42 is an upper sheet, and 5 is a resistance heating element.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art, provided that the terms are not defined differently. It is to be understood that terms defined in commonly used dictionaries have meanings that are consistent with the meaning of the terms in the prior art.

Referring to fig. 1, a novel aerial cable comprises a cable core 1 and an insulating protective sleeve 2, wherein a plurality of heat conduction metal seats 3 are alternately arranged on the outer side of the insulating protective sleeve 2; the outer peripheral surfaces of the plurality of heat conduction metal seats 3 are provided with thin metal cavities 4; the sheet metal cavity 4 is filled with heat conduction oil; a resistance heating element 5 is inserted at any position of the sheet metal cavity 4; the resistance heating element 5 is connected with a power supply through a wire.

Further, the sheet metal cavity 4 comprises a lower sheet 41 and an upper sheet 42; both ends of the thin metal cavity 4 are blocked by thin metal; the lower sheet 41 is fixedly connected with the heat conducting metal seat 3.

Specifically, the heat-conducting metal seat 3 serves on the one hand to fix the thin-sheet metal cavity 4, i.e. to provide it with a connection point to the insulating protective sleeve 2; on the other hand, part of heat in the thin metal cavity 4 can be directly transferred to the insulating protective sleeve 2 to maintain the temperature; in addition, the thin metal cavity 4 surrounds the outer side of the insulating protection sleeve 2, so that a heat preservation environment can be provided for the thin metal cavity 4, and the phenomena of cracking and the like caused by too low temperature can be prevented.

Further, the plurality of heat conducting metal seats 3 are uniformly distributed on the outer surface of the insulating protective sleeve 1; the upper end of the heat conducting metal seat 3 is positioned in the thin metal cavity 4.

Specifically, the heat conducting metal seat 3 is positioned in the thin metal cavity 4, so that heat transfer can be better realized.

Further, the lower sheet 41 and the upper sheet 42 are corrugated sheets; the corrugated grain directions of the lower sheet 41 and the upper sheet 42 are distributed along the circumferential direction of the sheet metal cavity.

The lower sheet 41 and the upper sheet 42 are preferably corrugated, and with this design, bending, coiling, etc. can be performed together with the cable without breaking.

Further, the resistance heating element 5 comprises at least one; the resistance heating element 5 is a liquid resistor; the upper end of the resistance heating element is positioned at the outer side of the upper sheet.

Further, the resistance heating element is immersed in the PTC heater.

Further, the outer side of the insulating protective sleeve is covered with heat preservation cotton; the upper side and the lower side of the heat preservation cotton are respectively connected with the lower layer sheet and the insulation protection sleeve; the heat-insulating cotton is coated around the heat-conducting metal seat.

Specifically, for ease of recognition, the insulation cotton is not shown in the figures; in the column of fig. 1, insulation wool should be located between the lower sheet 41 and the insulation cover 2, as well as between two adjacent heat conducting metal sockets 3.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims

1. The utility model provides a novel aerial cable, includes cable core and insulating protective sheath, its characterized in that: a plurality of heat conduction metal seats are alternately arranged on the outer side of the insulating protective sleeve; the outer peripheral surfaces of the plurality of heat conduction metal seats are provided with thin metal cavities; the sheet metal cavity is filled with heat conduction oil; a resistance heating element is inserted at any position of the thin metal cavity; the resistance heating element is connected with a power supply through a wire.

2. A novel aerial cable as claimed in claim 1, wherein: the sheet metal cavity comprises a lower sheet and an upper sheet; the two ends of the thin metal cavity are blocked by thin metal plates; the lower sheet is fixedly connected with the heat conduction metal seat.

3. A novel aerial cable as claimed in claim 2, wherein: the heat conducting metal seats are uniformly distributed on the outer surface of the insulating protective sleeve; the upper end of the heat conduction metal seat is positioned in the thin metal cavity.

4. A novel aerial cable according to claim 3, wherein: the lower sheet and the upper sheet are corrugated sheets; the corrugated grain directions of the lower sheet and the upper sheet are distributed along the circumferential direction of the sheet metal cavity.

5. The novel aerial cable of claim 4, wherein: the resistance heating element comprises at least one resistance heating element; the resistance heating element is a liquid resistor; the upper end of the resistance heating element is positioned at the outer side of the upper sheet.

6. The novel aerial cable of claim 5, wherein: the resistance heating element is immersed into the PTC heater.

7. A novel aerial cable as claimed in claim 1, wherein: the outer side of the insulating protective sleeve is covered with heat preservation cotton; the upper side and the lower side of the heat preservation cotton are respectively connected with the lower layer sheet and the insulation protection sleeve; the heat-insulating cotton is coated around the heat-conducting metal seat.