CN213844862U - Crosslinked polyethylene insulating rubber sheath cable - Google Patents
Crosslinked polyethylene insulating rubber sheath cable Download PDFInfo
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- CN213844862U CN213844862U CN202022870582.2U CN202022870582U CN213844862U CN 213844862 U CN213844862 U CN 213844862U CN 202022870582 U CN202022870582 U CN 202022870582U CN 213844862 U CN213844862 U CN 213844862U
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- crosslinked polyethylene
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- cable
- wire
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Abstract
The utility model discloses a crosslinked polyethylene insulating rubber sheath cable relates to crosslinked cable technical field, and for the operating temperature threshold value commonly used of solving current crosslinked cable among the prior art between 70 ~ 90 ℃, although crosslinked cable's maximum operating temperature is relatively higher, but its life still can receive the influence of temperature and cause the problem that the life-span shortens. The inboard on rubber jacket layer is provided with the cable harness and encircles the layer, the cable harness encircles the layer and includes the inner core line, and the inner core line has a plurality ofly, the inside of inner core line is provided with metal aluminium core, and metal aluminium core and inner core line fixed connection, the inboard on cable harness encircle the layer is provided with the asbestos fiber sleeve pipe, and asbestos fiber sleeve pipe and cable harness encircle the layer laminating and be connected, the sheathed tube inside of asbestos fiber is provided with the crosslinked polyethylene line cover, and crosslinked polyethylene line cover has four, the inside of crosslinked polyethylene line cover is provided with copper core group, and copper core group and crosslinked polyethylene line cover fixed connection.
Description
Technical Field
The utility model relates to a crosslinked cable technical field specifically is a crosslinked polyethylene insulating rubber sheath cable.
Background
The crosslinked cable is a crosslinked polyethylene insulated cable for short, the crosslinked cable is suitable for power frequency alternating current voltage 500KV and below transmission and distribution lines, the majority of high-voltage cables are insulated by crosslinked polyethylene, and the crosslinked polyethylene insulated cable is characterized in that a cable insulated polyethylene molecule is converted into a main body net-shaped molecular structure from a linear molecular structure by a chemical method or a physical method, namely thermoplastic polyethylene is converted into thermosetting crosslinked polyethylene, so that the heat resistance and the mechanical property of the crosslinked cable are greatly improved, the contractibility of the crosslinked cable is reduced, the crosslinked cable is not melted after being heated, and the excellent electrical property is kept.
However, the common working temperature threshold of the existing crosslinked cable is between 70 ℃ and 90 ℃, although the maximum working temperature of the crosslinked cable is relatively high, the service life of the crosslinked cable is still affected by the temperature, so that the service life is shortened; therefore, the existing requirements are not met, and a crosslinked polyethylene insulating rubber sheath cable is provided for the cable.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a crosslinked polyethylene insulating rubber sheath cable to the operating temperature threshold value commonly used of the current crosslinked cable who proposes in solving above-mentioned background art is between 70 ~ 90 ℃, although crosslinked cable's maximum operating temperature is relatively higher, but its life still can receive the influence of temperature and cause the problem that the life-span shortens.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a crosslinked polyethylene insulating rubber sheath cable, includes the rubber jacket layer, the inboard on rubber jacket layer is provided with wire harness encircling layer, wire harness encircling layer includes interior heart yearn, and interior heart yearn has a plurality ofly, the inside of interior heart yearn is provided with metallic aluminum core, and metallic aluminum core and interior heart yearn fixed connection, the inboard that the wire harness encircling layer is provided with the asbestos fiber sleeve pipe, and asbestos fiber sleeve pipe and wire harness encircle the layer laminating and be connected, asbestos fiber sheathed tube inside is provided with crosslinked polyethylene line cover, and crosslinked polyethylene line cover has four.
Preferably, the inside of the crosslinked polyethylene wire sleeve is provided with a copper core wire set, and the copper core wire set is fixedly connected with the crosslinked polyethylene wire sleeve.
Preferably, a flame-retardant filling layer is arranged between the crosslinked polyethylene wire sleeve and the asbestos fiber sleeve, and the flame-retardant filling layer is of a granular structure.
Preferably, the outer surface of the asbestos fiber sleeve is provided with a plurality of heat dissipation expansion slots.
Preferably, the outer side of the inner core wire is provided with a metal hoop, and the metal hoop and the inner core wire are connected through an arc-shaped limiting groove.
Preferably, the metal hoop and the rubber jacket layer are connected through a clamping groove, the metal hoop is distributed discontinuously, and the distribution distance between the metal hoops is fifty centimeters.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a pencil surrounds the layer and is surrounded the parcel layer that forms by multiunit inner conductor, can help the cable inside to dispel the heat through inside metal aluminium core when playing the guard action to reduce the temperature of the inside core subassembly of cable, the effectual life who promotes the cable, the inside of inner conductor is provided with metal aluminium core, because the operating temperature of the inside of cable will be greater than outside ambient temperature, so can absorb the temperature that comes from the inside of cable through metal aluminium core, carry out the exchange of energy with the air current in the external environment afterwards, thereby play radiating effect;
2. the utility model discloses the outside of interior heart yearn is provided with metal hoop, and metal hoop passes through the arc spacing groove with the interior heart yearn and is connected, fixes through the interval of arranging between the interior heart yearn of metal hoop, prevents the condition that the skew dislocation appears in the in-process that uses to the structure that leads to the pencil surrounding layer is destroyed.
Drawings
FIG. 1 is an overall front view of the present invention;
FIG. 2 is a schematic view of the asbestos fiber casing according to the present invention;
fig. 3 is a schematic structural diagram of the metal hoop of the present invention.
In the figure: 1. a rubber jacket layer; 2. a wire harness surrounding layer; 3. an inner core wire; 4. a metallic aluminum core; 5. an asbestos fiber sleeve; 6. a crosslinked polyethylene wire jacket; 7. a copper core wire set; 8. a flame retardant filler layer; 9. heat dissipation expansion grooving; 10. a metal hoop; 11. an arc-shaped limiting groove.
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.
Referring to fig. 1-3, the present invention provides an embodiment: a crosslinked polyethylene insulated rubber sheath cable comprises a rubber sheath layer 1, wherein the rubber sheath layer 1 is used as the outermost layer structure of the whole cable and mainly plays a role in separating and protecting, a wire harness surrounding layer 2 is arranged on the inner side of the rubber sheath layer 1, the wire harness surrounding layer 2 comprises inner core wires 3, a plurality of inner core wires 3 are arranged, the wire harness surrounding layer 2 is a surrounding layer formed by surrounding a plurality of groups of inner core wires 3, the inner part of the cable can be helped to dissipate heat through an inner metal aluminum core 4 while the wire harness surrounding layer plays a role in protecting, so that the temperature of a core assembly in the cable is reduced, the service life of the cable is effectively prolonged, the inner part of the inner core wire 3 is provided with the metal aluminum core 4, the metal aluminum core 4 is fixedly connected with the inner core wires 3, the working temperature in the cable is higher than the external ambient temperature, and the temperature from the inner part of the cable can be absorbed through the metal aluminum core 4, then carry out the exchange of energy with its air current in the external environment to play radiating effect, the inboard that the layer 2 was encircleed to the pencil is provided with asbestos fiber sleeve pipe 5, and asbestos fiber sleeve pipe 5 encircles layer 2 laminating with the pencil and be connected, the inside of asbestos fiber sleeve pipe 5 is provided with crosslinked polyethylene wire cover 6, and crosslinked polyethylene wire cover 6 has four, and asbestos fiber sleeve pipe 5 wraps up the outside of four groups of crosslinked polyethylene wire covers 6, thereby accomplishes the fixed to crosslinked polyethylene wire cover 6.
Further, a copper core wire set 7 is arranged inside the cross-linked polyethylene wire sleeve 6, and the copper core wire set 7 is fixedly connected with the cross-linked polyethylene wire sleeve 6, so that the current transmission function is realized.
Further, a flame-retardant filling layer 8 is arranged between the cross-linked polyethylene wire sleeve 6 and the asbestos fiber sleeve 5, the flame-retardant filling layer 8 is of a granular structure, and the flame-retardant filling layer 8 can play a flame-retardant and fireproof role.
Further, asbestos fiber sleeve 5's surface is provided with heat dissipation dilatation fluting 9, and heat dissipation dilatation fluting 9 has a plurality ofly, and heat dissipation dilatation fluting 9 can increase interior heart yearn 3 and the 6 contact space of inside crosslinked polyethylene wire casing, and the conduction of help heat gives off.
Further, the outside of internal core 3 is provided with metal hoop 10, and metal hoop 10 is connected through arc spacing groove 11 with internal core 3, fixes through the interval of arranging between internal core 3 of metal hoop 10, prevents the condition of skew dislocation in the in-process that uses to lead to the structure of pencil surrounding layer 2 to be destroyed.
Further, the metal hoop 10 and the rubber jacket layer 1 are connected through a clamping groove, the metal hoop 10 is discontinuously distributed, and the distribution distance between the metal hoops 10 is fifty centimeters.
The working principle is as follows: when the heat-insulating cable is used, the four groups of crosslinked polyethylene wire sleeves 6 are wrapped by the asbestos fiber sleeve 5, so that the crosslinked polyethylene wire sleeves 6 are fixed, then the flame-retardant filling layer 8 is added into a gap between the crosslinked polyethylene wire sleeves 6 and the asbestos fiber sleeve 5, the flame-retardant filling layer 8 can play a role of flame retardance and fire prevention, then the wiring harness surrounding layer 2 is arranged on the outer side of the asbestos fiber sleeve 5, the wiring harness surrounding layer 2 is a wrapping layer formed by surrounding multiple groups of inner core wires 3, the heat dissipation can be realized inside the cable through the inner metal aluminum core 4 while the protection effect is realized, so that the temperature of a core assembly inside the cable is reduced, the service life of the cable is effectively prolonged, the metal aluminum core 4 is arranged inside the inner core wire 3, the working temperature inside the cable is higher than the external ambient temperature, and the temperature from the inside of the cable can be absorbed through the metal aluminum core 4, then the air flow in the external environment exchanges energy with the air flow in the external environment, thereby playing a role of heat dissipation.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a crosslinked polyethylene insulating rubber sheath cable, includes rubber jacket layer (1), its characterized in that: the inboard of rubber jacket layer (1) is provided with wire harness encircling layer (2), wire harness encircling layer (2) includes interior heart yearn (3), and interior heart yearn (3) have a plurality ofly, the inside of interior heart yearn (3) is provided with metal aluminium core (4), and metal aluminium core (4) and interior heart yearn (3) fixed connection, the inboard of wire harness encircling layer (2) is provided with asbestos fiber sleeve pipe (5), and asbestos fiber sleeve pipe (5) and wire harness encircle layer (2) laminating and be connected, the inside of asbestos fiber sleeve pipe (5) is provided with crosslinked polyethylene wire sleeve (6), and crosslinked polyethylene wire sleeve (6) have four.
2. The crosslinked polyethylene insulated rubber-sheathed cable according to claim 1, wherein: the copper core wire set (7) is arranged inside the cross-linked polyethylene wire sleeve (6), and the copper core wire set (7) is fixedly connected with the cross-linked polyethylene wire sleeve (6).
3. The crosslinked polyethylene insulated rubber-sheathed cable according to claim 1, wherein: and a flame-retardant filling layer (8) is arranged between the crosslinked polyethylene wire sleeve (6) and the asbestos fiber sleeve (5), and the flame-retardant filling layer (8) is of a granular structure.
4. The crosslinked polyethylene insulated rubber-sheathed cable according to claim 1, wherein: the surface of asbestos fiber sleeve pipe (5) is provided with heat dissipation dilatation fluting (9), and heat dissipation dilatation fluting (9) have a plurality ofly.
5. The crosslinked polyethylene insulated rubber-sheathed cable according to claim 1, wherein: the outer side of the inner core wire (3) is provided with a metal hoop (10), and the metal hoop (10) is connected with the inner core wire (3) through an arc-shaped limiting groove (11).
6. The crosslinked polyethylene insulated rubber-sheathed cable according to claim 5, wherein: the metal hoop (10) is connected with the rubber jacket layer (1) through a clamping groove, the metal hoop (10) is distributed discontinuously, and the distribution distance between the metal hoops (10) is fifty centimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022870582.2U CN213844862U (en) | 2020-12-01 | 2020-12-01 | Crosslinked polyethylene insulating rubber sheath cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022870582.2U CN213844862U (en) | 2020-12-01 | 2020-12-01 | Crosslinked polyethylene insulating rubber sheath cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213844862U true CN213844862U (en) | 2021-07-30 |
Family
ID=76995884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022870582.2U Expired - Fee Related CN213844862U (en) | 2020-12-01 | 2020-12-01 | Crosslinked polyethylene insulating rubber sheath cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213844862U (en) |
-
2020
- 2020-12-01 CN CN202022870582.2U patent/CN213844862U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210730 Termination date: 20211201 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |