CN212380181U

CN212380181U - High-temperature-resistant composite cable

Info

Publication number: CN212380181U
Application number: CN202021362935.1U
Authority: CN
Inventors: 卢飞
Original assignee: Anhui Off Special Cable Technology Co ltd
Current assignee: Anhui Off Special Cable Technology Co ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-01-19
Anticipated expiration: 2030-07-13

Abstract

The utility model relates to the technical field of cables, concretely relates to high temperature resistant composite cable. Including the cable core, heat dissipation layer, first insulating layer, high temperature resistant layer, armor, insulating layer filling layer inoxidizing coating, second insulating layer, fire-retardant layer and outer protective layer have set gradually by interior on the cable core, the cable core has two at least, the cable core includes cable conductor and fixed cover, cable conductor is located fixed cover, cable conductor passes through bumping post and fixed cover fixed connection, form the heat dissipation chamber between fixed cover and the cable conductor, the fixed link that is provided with between two adjacent fixed covers, the link is hollow structure, and the link is linked together with the heat dissipation chamber, link one end and heat dissipation layer fixed connection, the heat dissipation chamber is linked together through mount and heat dissipation layer, the fixed elastic support piece that is provided with between first insulating layer and the heat dissipation layer.

Description

High-temperature-resistant composite cable

Technical Field

The utility model relates to the technical field of cables, concretely relates to high temperature resistant cable.

Background

The power cable is used for transmitting and distributing electric energy, is commonly used for urban underground power grids, power station leading-out lines, power supply inside industrial and mining enterprises and power transmission lines under river-crossing seawater, and has a gradually increasing proportion in the power line. Power cables are cable products used in the trunk lines of power systems to transmit and distribute high power electrical energy, including various voltage classes, 1-500KV and above, and various insulated power cables.

When the cable is in long-term overload operation, the aging of insulation can be accelerated due to overhigh temperature, so that the insulation is broken down, particularly in hot summer, the temperature rise is accelerated due to the fact that the power cable absorbs heat, the breakdown and the aging of the power cable are accelerated, and therefore the faults of the power cable are more frequent in summer.

Therefore, although the existing cable is widely applied in daily life, the high temperature resistance of the existing power cable is not good enough when in use. Refer to application number for CN201621156390.2, an anti stretch cable relates to cable technical field, and it includes oversheath and power cord, and the power cord is all worn to establish in the oversheath, and the weaving layer has been laid to the medial surface of oversheath, and the medial surface of weaving layer is provided with the polyester area, and the inboard packing in polyester area has the cable cream, and the power cord includes inner sheath and many conductors, and the conductor is copper clad aluminum conductor, and the thickness on its copper layer is not less than the radial 6.5% of conductor or the volume on copper layer is not less than 15% of conductor volume, compares with prior art, the utility model discloses a cable is owing to be provided with weaving layer and polyester area, and the conductor has adopted copper clad aluminum's structure, and has further optimized the thickness or the volume on copper layer to make the conductor of cable be difficult to by tensile deformation, ensure. The cable has low high-temperature resistance, so that the cable is easy to break down when used in a high-temperature environment, and the problem of small use range is caused while the use performance is reduced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a strong outdoor cable that stand wear and tear that excellent in use effect is strong.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a high temperature resistant composite cable, including the cable core, the heat dissipation layer has set gradually by interior and outside on the cable core, first insulating layer, high temperature resistant layer, the armor, insulating layer filling layer inoxidizing coating, the second insulating layer, fire-retardant layer and outer protective layer, the cable core has two at least, the cable core includes cable conductor and fixed cover, cable conductor is located fixed cover, the fixed bumping post that is provided with between cable conductor and the fixed cover, form the heat dissipation chamber between fixed cover and the cable conductor, the fixed link that is provided with between two adjacent fixed covers, the link is hollow structure, and the link is linked together with the heat dissipation chamber, link one end and heat dissipation layer fixed connection, the heat dissipation chamber is linked together through mount and heat dissipation layer, the fixed elastic support piece that is provided with between first insulating layer and the.

Further optimization of this technical scheme, cable conductor is formed by three or more than the sinle silk transposition, and the sinle silk includes the conductor, and the conductor has set gradually shielding layer and parcel layer outward, is provided with insulating filling layer in the shielding layer, and the conductor nestification is in insulating filling layer, and the buffer column is fixed to be set up between parcel layer and fixed cover.

The further optimization of this technical scheme, the buffering post uses cable conductor to be annular equidistance distribution in the parcel layer outside as the center, and buffering post one end and parcel layer fixed connection, the other end and fixed cover fixed connection.

According to the further optimization of the technical scheme, the elastic supporting blocks are uniformly distributed on the outer side of the first heat insulation layer, and the first heat insulation layer and the heat dissipation layer are fixedly connected with the elastic supporting blocks.

According to the further optimization of the technical scheme, the PEEK resin material is selected for the high-temperature resistant layer.

According to the further optimization of the technical scheme, the insulating protective layer is formed by weaving glass fibers.

Further optimization of the technical scheme is realized, and the armor layer is interlocked and armored by aluminum alloy belts.

The technical scheme is further optimized, and the filling material in the flame-retardant layer is brominated polystyrene.

Compared with the prior art the utility model discloses following beneficial effect has: the cavity is arranged in the cable core to assist the heat dissipation in the cable conductor, and the heat dissipation cavity in the cable core is communicated with the heat dissipation layer through the connecting frame with the hollow structure, so that the heat dissipation effect can be effectively improved. The inboard and the outside of armor all are provided with the insulating layer and can improve thermal-insulated effect greatly, and fire-retardant layer setting improves fire behavior and increase heat resistance in the protective sheath inboard, improves the security. The utility model discloses a heat dissipation and thermal-insulated effect are all good, and the utility model discloses have higher security, its result of use and practicality are all good.

Drawings

FIG. 1 is a schematic cross-sectional view of a high temperature resistant composite cable;

fig. 2 is a schematic structural diagram of a cable core section of a high-temperature-resistant composite cable section.

In the figure: the cable comprises a cable core 1, a heat dissipation layer 2, an elastic supporting block 3, a first heat insulation layer 4, a high temperature resistant layer 5, an armor layer 6, an insulation protection layer 7, a second heat insulation layer 8, a flame retardant layer 9, an outer protection layer 10, a buffer column 11, a fixing sleeve 12, a conductor 13, a shielding layer 14, an insulation layer filling layer 15, a connecting frame 16 and a wrapping layer 17.

Detailed Description

To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

Referring to fig. 1, a schematic diagram of a cross-sectional structure of a high-temperature-resistant composite cable is shown, and the high-temperature-resistant composite cable comprises a cable core 1, a heat dissipation layer 2, a first heat insulation layer 4, a high-temperature-resistant layer 5, an armor layer 6, an insulation filling layer 15, a protective layer 7, a second heat insulation layer 8, a flame retardant layer 9 and an outer protective layer 10, wherein the heat dissipation layer 2, the first heat insulation layer 4, the high-temperature-resistant layer 5, the armor layer 6, the insulation protective layer 7, the second heat insulation layer 8, the flame retardant layer 9 and the outer protective layer 10 are sequentially arranged on the cable core 1 from inside to outside, 4 cable cores 1 are provided, a connecting frame 16 is fixedly arranged between every two adjacent cable cores 1, the connecting frame 16 is of a T-shaped structure, the connecting frame 16 is of a hollow structure, two ends of the connecting frame 16 are respectively communicated with the cable cores 1, one end of the connecting. Elastic supporting blocks 3 are fixedly arranged between the first heat insulation layer 4 and the heat dissipation layer 2, the elastic supporting blocks 3 are uniformly distributed on the outer side of the first heat insulation layer 4, the first heat insulation layer 4 and the heat dissipation layer 2 are fixedly connected with the elastic supporting blocks 3, the elastic supporting blocks 3 can play a buffering role, meanwhile, the elastic supporting blocks 3 can form a cavity between the heat dissipation layer 2 and the first heat insulation layer 4, and the cavity is in contact with the heat dissipation layer 2, so that heat dissipation of the heat dissipation layer 2 can be assisted. The insulating protective layer 7 is formed by weaving glass fibers, and the glass fiber braided wire has the characteristics of tear resistance, high tensile strength, super flexibility, high straight-through property, corrosion resistance and capability of bearing high working temperature. The armor layer 6 adopts aluminum alloy belt interlocking armor. The filling material in the flame-retardant layer 9 is brominated polystyrene, and the brominated polystyrene material has the characteristics of high thermal stability, chemical stability and the like, so that the flame retardant is an ideal flame retardant material. The high temperature resistant layer 5 is made of PEEK resin material.

Referring to fig. 2, a schematic view of a cross-sectional structure of a cable core 1 of a high temperature resistant composite cable cross-section is shown, the cable core 1 includes 4 cable wires and a fixing sleeve 12, the cable wires are located in the fixing sleeve 12, the cable wires are formed by twisting three or more cable cores, each cable core includes a conductor 13 and an insulating layer filling layer 15, the conductor 13 is sequentially provided with a shielding layer 14 and a wrapping layer 17, the insulating layer filling layer 15 is arranged in the shielding layer 14, the conductor 13 is nested in the insulating layer filling layer 15, and the insulating layer filling layer 15, the shielding layer 14 and the wrapping layer 17 can be connected through an adhesive in an adhesion manner. The buffer column 11 is fixedly arranged between the wrapping layer and the fixing sleeve 12. Fixed 3 buffering post 11 that are provided with between parcel layer and fixed cover 12, 3 buffering post 11 use the cable conductor to be annular equidistance and distribute in the parcel layer 17 outside as the center, and 11 one end of buffering post and parcel layer 12 fixed connection, the other end and fixed cover 12 fixed connection. A heat dissipation cavity is formed between the fixing sleeve 12 and the cable conductor, and plays a role in auxiliary heat dissipation.

The utility model discloses when using, the inside cavity that is provided with of cable core 1, such design can assist the inside heat dissipation of cable wire, and the link through having hollow structure is linked together the heat dissipation chamber in with cable core 1 with heat dissipation layer 2 and effectively improves the radiating effect. The inboard and the outside of armor 6 all are provided with the insulating layer and can improve thermal-insulated effect greatly. The flame retardant layer 9 is disposed inside the protective sheath 12 to improve the fire protection effect and to increase the heat resistance, thereby improving the safety of the cable. The utility model discloses a heat dissipation and thermal-insulated effect are all good, and the utility model discloses higher security has, and result of use and practicality are all good.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrases "comprising … …" or "comprising … …" does not exclude the presence of additional elements in a process, method, article, or terminal that comprises the element. Further, herein, "greater than," "less than," "more than," and the like are understood to exclude the present numbers; the terms "above", "below", "within" and the like are to be understood as including the number.

Although the embodiments have been described, once the basic inventive concept is known, other changes and modifications can be made to the embodiments by those skilled in the art, so that the above embodiments are only examples of the present invention, and not intended to limit the scope of the present invention, and all the modifications of the equivalent structure or equivalent flow path using the contents of the specification and the drawings of the present invention, or directly or indirectly using other related technical fields are also included in the scope of the present invention.

Claims

1. A high-temperature resistant composite cable is characterized by comprising a cable core, wherein a heat dissipation layer, a first heat insulation layer, a high-temperature resistant layer, an armor layer, an insulation layer filling layer protection layer, a second heat insulation layer, a flame retardant layer and an outer protection layer are sequentially arranged on the cable core from inside to outside, the number of the cable cores is at least two, the cable cores comprise cable leads and a fixed sleeve, the cable leads are positioned in the fixed sleeve, the cable lead is fixedly connected with the fixed sleeve through the buffer column, a heat dissipation cavity is formed between the fixed sleeve and the cable lead, a connecting frame is fixedly arranged between two adjacent fixing sleeves, the connecting frame is of a hollow structure, and the connecting frame is communicated with the heat dissipation cavity, one end of the connecting frame is fixedly connected with the heat dissipation layer, the heat dissipation cavity is communicated with the heat dissipation layer through a fixing frame, and an elastic supporting block is fixedly arranged between the first heat insulation layer and the heat dissipation layer.

2. The high-temperature-resistant composite cable according to claim 1, wherein the cable conductor is formed by twisting three or more wire cores, each wire core comprises a conductor, a shielding layer and a wrapping layer are sequentially arranged outside the conductor, an insulating filling layer is arranged in the shielding layer, the conductor is nested in the insulating filling layer, and the buffer column is fixedly arranged between the wrapping layer and the fixing sleeve.

3. The high temperature resistant composite cable of claim 2, wherein the buffer posts are annularly and equidistantly distributed on the outer side of the wrapping layer with the cable conductor as the center, and one end of the buffer post is fixedly connected with the wrapping layer and the other end is fixedly connected with the fixing sleeve.

4. The high-temperature-resistant composite cable as claimed in claim 1, wherein the elastic support blocks are uniformly distributed outside the first thermal insulation layer, and the first thermal insulation layer and the heat dissipation layer are both fixedly connected with the elastic support blocks.

5. The composite cable as claimed in claim 1, wherein the high temperature resistant layer is made of PEEK resin.

6. The high temperature resistant composite cable of claim 1, wherein the insulating protective layer is woven from glass filaments.

7. A high temperature resistant composite cable according to claim 1, wherein said armor layer is interlocked with aluminum alloy tape.

8. The high-temperature-resistant composite cable according to claim 1, wherein the filling material inside the flame-retardant layer is brominated polystyrene.