CN209993389U

CN209993389U - High temperature resistant cable for power engineering

Info

Publication number: CN209993389U
Application number: CN201920963404.9U
Authority: CN
Inventors: 李月; 其他发明人请求不公开姓名
Original assignee: Yu Yunlan
Current assignee: Yu Yunlan
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-01-24
Anticipated expiration: 2029-06-25

Abstract

The utility model discloses a high temperature resistant cable for electric power engineering, including oversheath and many wires, oversheath inner wall middle part is equipped with the fibre filling layer through seting up circular cavity, a plurality of water conservancy diversion holes have vertically been seted up at fibre filling layer external surface insulating layer's inner wall middle part, the vertical first heat transfer passageway of a plurality of annular of having seted up of insulating layer inner wall of water conservancy diversion hole side, cylindrical cooling channel has vertically been seted up at the inner wall middle part of fibre filling layer, a plurality of oval thermal-insulated chambeies have been seted up to the fibre filling layer inner wall in the cooling channel outside, the vertical circular second heat transfer passageway of having seted up between two adjacent thermal-insulated chambeies of fibre filling layer inner. The utility model discloses the inside heat energy that produces because of the resistance loss of cable is downthehole through the direct leading-in water conservancy diversion of first heat transfer passageway by the radiating hole to convey to cooling channel in after second heat transfer passageway integrates under the water conservancy diversion hole effect, the inside heat of cable when can effectively reduce transmission of electricity influences the whole performance of cable, and the practicality is strong.

Description

High temperature resistant cable for power engineering

Technical Field

The utility model relates to the technical field of cables, specifically a high temperature resistant cable for electric power engineering.

Background

Typically a rope-like cable made up of several or groups of conductors (at least two in each group) twisted together, with the conductors of each group being insulated from one another and often twisted around a center, the entire outer surface being coated with a highly insulating coating. The cable has the characteristics of internal electrification and external insulation. The high-temperature-resistant cable has excellent performances of oil resistance, water resistance, wear resistance, acid and alkali resistance, various corrosive gases, aging resistance, no combustion and the like, and is suitable for industries such as metallurgy, electric power, petrifaction and the like. Most of the existing high-temperature-resistant cables only enhance the heat resistance of the outer surface of the cable, and because the cable can generate heat energy due to resistance consumption during use, the cable is influenced by internal and external bidirectional high temperature, potential safety hazards exist while the transmission performance is seriously influenced, and the practicability is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high temperature resistant cable for electric power engineering to thereby can lead to the cable to receive inside and outside two-way high temperature influence because of the resistance loss produces heat energy when solving among the prior art cable use, there is the problem of potential safety hazard when seriously influencing transmission performance.

In order to achieve the above object, the utility model provides a following technical scheme: a high-temperature-resistant cable for electric power engineering comprises an outer sheath and a plurality of wires, wherein a fiber filling layer is fixedly arranged in the middle of the inner wall of the outer sheath through a circular cavity, a circular insulating layer is fixedly arranged on the outer surface of the fiber filling layer, a plurality of circular diversion holes are longitudinally and uniformly formed in the middle of the inner wall of the insulating layer, a plurality of annular first heat exchange channels are vertically formed in the inner wall of the insulating layer on the side surface of each diversion hole, a heat dissipation hole is longitudinally formed in the outer side of each first heat exchange channel between every two adjacent diversion holes in the inner wall of the insulating layer, a layer of glass fiber cloth is fixedly arranged on the outer surface of the insulating layer, a metal mesh shielding layer is fixedly arranged between the glass fiber cloth and the outer sheath, a cylindrical cooling channel is longitudinally formed in the middle of the inner wall of the fiber, a circular second heat exchange channel is vertically formed between two adjacent heat insulation cavities in the inner wall of the fiber filling layer, and the wires are longitudinally and fixedly arranged in the middle of the inner wall of each heat insulation cavity through the inner sheath.

Preferably, the outer sheath is made of thermoplastic polyurethane material or polytetrafluoroethylene material, and the filling material in the fiber filling layer is glass fiber material or synthetic fiber material.

Preferably, the inner wall of the fiber filling layer is at least provided with four wires through the heat insulation cavity, and the wires are formed by twisting a plurality of round copper cable cores.

Preferably, the flow guide holes longitudinally penetrate through the inner wall of the insulating layer and are respectively communicated with the plurality of first heat exchange channels, and the heat dissipation holes are longitudinally arranged between two adjacent first heat exchange channels but are not communicated with the adjacent first heat exchange channels.

Preferably, the first heat exchange channel and the second heat exchange channel have the same inner diameter, and the cooling channel is communicated with the first heat exchange channel through the second heat exchange channel.

Preferably, the inner diameters of the flow guide holes and the heat dissipation holes are the same, and the inner diameter of the cooling channel is larger than that of the heat exchange channel.

Compared with the prior art, the beneficial effects of the utility model are that:

1. vertically seted up a plurality of water conservancy diversion holes at insulating layer inner wall middle part, the vertical first heat transfer passageway of annular of having seted up of insulating layer inner wall of water conservancy diversion hole side, cylindrical cooling channel has vertically been seted up at the inner wall middle part of fibre filling layer, cooling channel is through second heat transfer passageway and first heat transfer passageway intercommunication, the cable is inside during the use because of the heat energy that the resistance loss produced directly channels into the water conservancy diversion hole through first heat transfer passageway by the radiating hole, and convey to cooling channel in after the second heat transfer passageway integrates under the water conservancy diversion hole effect, the inside heat of cable can effectively reduce the influence of transmission of electricity time whole service performance to the cable, therefore, the clothes hanger is.

2. The heat dissipation holes are longitudinally formed in the outer side of the first heat exchange channel between every two adjacent flow guide holes in the inner wall of the insulating layer, the outer sheath is made of thermoplastic polyurethane materials or polytetrafluoroethylene materials, the heat resistance of the outer surface of the cable can be effectively enhanced, and the using effect is good.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic view of the communicating structure of the internal channel of the insulating layer according to the present invention;

fig. 4 is a sectional view of the present invention.

In the figure: 1. an outer sheath; 2. a wire; 3. a fiber-filled layer; 4. an insulating layer; 5. a flow guide hole; 6. a first heat exchange channel; 7. heat dissipation holes; 8. glass fiber cloth; 9. a metal mesh shielding layer; 10. a cooling channel; 11. a thermally insulating cavity; 12. a second heat exchange channel.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, 2, 3, 4, in an embodiment of the present invention, a high temperature resistant cable for power engineering includes an outer sheath 1 and a plurality of wires 2, a fiber filling layer 3 is fixedly disposed at the middle portion of the inner wall of the outer sheath 1 by forming a circular cavity, a circular ring-shaped insulating layer 4 is fixedly disposed on the outer surface of the fiber filling layer 3, a plurality of circular flow guide holes 5 are longitudinally and uniformly formed at the middle portion of the inner wall of the insulating layer 4, a plurality of annular first heat exchange passages 6 are vertically formed at the inner wall of the insulating layer 4 at the side of the flow guide holes 5, heat dissipation holes 7 are longitudinally disposed at the outer side of the first heat exchange passage 6 between two adjacent flow guide holes 5 at the inner wall of the insulating layer 4, a layer of glass fiber cloth 8 is fixedly disposed at the outer surface of the insulating layer 4, a metal mesh shielding layer 9 is fixedly disposed between, the inner wall of the fiber filling layer 3 at the outer side of the cooling channel 10 is circularly provided with a plurality of oval heat insulation cavities 11, a circular second heat exchange channel 12 is vertically arranged between two adjacent heat insulation cavities 11 at the inner wall of the fiber filling layer 3, and the wires 2 are respectively and longitudinally fixedly arranged in the middle of the inner walls of the heat insulation cavities 11 through inner sheaths; the outer sheath 1 is made of thermoplastic polyurethane materials or polytetrafluoroethylene materials, and the filling materials in the fiber filling layer 3 are glass fiber materials or synthetic fiber materials, so that the high-temperature resistance of the cable is enhanced; the inner wall of the fiber filling layer 3 is at least provided with four wires 2 through a heat insulation cavity 11, and the wires 2 are formed by stranding a plurality of round copper cable cores, so that the power transmission performance of the cable is met; the heat dissipation holes 7 are longitudinally arranged between two adjacent first heat exchange channels 6 but are not communicated with the adjacent first heat exchange channels 6, so that the heat is rapidly collected and led out; the inner diameters of the first heat exchange channel 6 and the second heat exchange channel 12 are the same, and the cooling channel 10 is communicated with the first heat exchange channel 6 through the second heat exchange channel 12, so that the heat transmission efficiency is improved; the water conservancy diversion hole 5 is the same with louvre 7 internal diameter, and cooling channel 10's internal diameter is greater than heat transfer channel's internal diameter, accomplishes the cooling operation in carrying cooling channel 10 through integrating inside heat, guarantees cable performance.

The utility model discloses a theory of operation and use flow: when the heat-conducting heat-.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a high temperature resistant cable for electric power engineering, includes oversheath (1) and many wires (2), its characterized in that: the fiber filling layer (3) is fixedly arranged in the middle of the inner wall of the outer sheath (1) by forming a circular cavity, the annular insulating layer (4) is fixedly arranged on the outer surface of the fiber filling layer (3), a plurality of circular guide holes (5) are longitudinally and uniformly formed in the middle of the inner wall of the insulating layer (4), a plurality of annular first heat exchange channels (6) are vertically formed in the inner wall of the insulating layer (4) on the side surface of each guide hole (5), heat dissipation holes (7) are longitudinally formed in the outer side of each first heat exchange channel (6) between every two adjacent guide holes (5) in the inner wall of the insulating layer (4), a layer of glass fiber cloth (8) is fixedly arranged on the outer surface of the insulating layer (4), a metal mesh shielding layer (9) is fixedly arranged between the glass fiber cloth (8) and the outer sheath (1), and a cylindrical cooling channel (10) is, the fiber filling layer (3) inner wall in the cooling channel (10) outside is circular and has been seted up a plurality of oval thermal-insulated chambeies (11), vertically between two adjacent thermal-insulated chambeies (11) of fiber filling layer (3) inner wall seted up circular second heat transfer passageway (12), wire (2) are vertically fixed respectively through the inner sheath and are set up at thermal-insulated chamber (11) inner wall middle part.

2. The high-temperature-resistant cable for electric power engineering according to claim 1, wherein: the outer sheath (1) is made of thermoplastic polyurethane materials or polytetrafluoroethylene materials, and the filling materials in the fiber filling layer (3) are glass fiber materials or synthetic fiber materials.

3. The high-temperature-resistant cable for electric power engineering according to claim 1, wherein: the inner wall of the fiber filling layer (3) is at least provided with four wires (2) through the heat insulation cavity (11), and the wires (2) are formed by twisting a plurality of round copper cable cores.

4. The high-temperature-resistant cable for electric power engineering according to claim 1, wherein: the heat dissipation holes (7) are longitudinally arranged between two adjacent first heat exchange channels (6) but not communicated with the adjacent first heat exchange channels (6).

5. The high-temperature-resistant cable for electric power engineering according to claim 1, wherein: the inner diameters of the first heat exchange channel (6) and the second heat exchange channel (12) are the same, and the cooling channel (10) is communicated with the first heat exchange channel (6) through the second heat exchange channel (12).

6. The high-temperature-resistant cable for electric power engineering according to claim 1, wherein: the inner diameters of the flow guide holes (5) and the heat dissipation holes (7) are the same, and the inner diameter of the cooling channel (10) is larger than that of the heat exchange channel.