CN216928150U

CN216928150U - Crosslinked polyethylene insulated smooth aluminum sheath power cable

Info

Publication number: CN216928150U
Application number: CN202220850816.3U
Authority: CN
Inventors: 钱朝兴
Original assignee: Baichuan Cable Co ltd
Current assignee: Baichuan Cable Co ltd
Priority date: 2022-04-13
Filing date: 2022-04-13
Publication date: 2022-07-08
Anticipated expiration: 2032-04-13

Abstract

The utility model relates to the technical field of cables, in particular to a crosslinked polyethylene insulated smooth aluminum sheath power cable which comprises a core layer, a protective layer, a smooth aluminum sheath and a protective sleeve, wherein the protective layer, the smooth aluminum sheath and the protective sleeve are sequentially arranged outside the core layer, the core layer comprises an insulating column and a plurality of groups of cable cores arranged inside the insulating column, the insulating sleeve is arranged outside the insulating column, a heat insulation buffer layer is arranged outside the waterproof layer, the smooth aluminum sheath is arranged outside the belting layer, the protective sleeve is arranged outside the smooth aluminum sheath, the degree of the cable influenced by high temperature is reduced by arranging the heat insulation buffer layer, the using effect of the cable in a high-temperature area is improved, and the cable safety is improved and electric leakage is avoided by arranging the insulating column and the insulating sleeve.

Description

Crosslinked polyethylene insulated smooth aluminum sheath power cable

Technical Field

The utility model relates to the technical field of cables, in particular to a crosslinked polyethylene insulated smooth aluminum sheath power cable.

Background

Chinese patent publication No. CN209087425U discloses a "crosslinked polyethylene insulated smooth aluminum sheath power cable", which includes a conductor, an inner shielding layer, an insulating layer, an outer shielding layer, a smooth aluminum sheath, and a heat-sensitive outer sheath, the outer side of the conductor is wrapped with the inner shielding layer, the outer side of the inner shielding layer is wrapped with the insulating layer, the outer side of the insulating layer is wrapped with the outer shielding layer, the outer side of the outer shielding layer is wrapped with a semi-conductive belt or a semi-conductive buffer water-blocking belt, the outer side of the semi-conductive belt or the semi-conductive buffer water-blocking belt is wrapped with the smooth aluminum sheath, the outer side of the smooth aluminum sheath is wrapped with the heat-sensitive outer sheath, and the smooth aluminum sheath is a longitudinally wrapped weld-formed smooth aluminum sheath.

The utility model discloses an though make the face-to-face contact of metallic shield and insulation core, the compactedness of cable has also been improved simultaneously, the air structure thermal resistance has been avoided, better vertical water blocking performance has been realized, nevertheless because intensity is not enough when in-service use, can take place acutely to rock when receiving the strong wind effect, make the cable fracture easily, and it is not good to handle in the aspect of thermal-insulated, make the resistance greatly increased of cable under the influence of high temperature weather, transmission of electricity efficiency has been reduced, the increase loss.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects that the existing crosslinked polyethylene insulated smooth aluminum sheath power cable can generate violent shaking under the action of strong wind due to insufficient strength in actual use, the cable is easy to break, poor heat insulation treatment is realized, the resistance of the cable is greatly increased under the influence of high-temperature climate, the power transmission efficiency is reduced, the loss is increased and the like.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the design crosslinked polyethylene insulating level and smooth aluminium sheath power cable, including core layer, inoxidizing coating, level and smooth aluminium sheath and protective sheath, the outside of core layer has set gradually inoxidizing coating, level and smooth aluminium sheath and protective sheath, the core layer includes the insulated column and sets up in the inside a plurality of groups cable core of insulated column, the outside of insulated column is provided with the insulating sheath, the outside of insulating sheath is provided with the armor, the outside of armor is provided with the inoxidizing coating, the inoxidizing coating is including setting up in the outside waterproof layer of armor, the outside of waterproof layer is provided with thermal buffer layer, thermal buffer layer's outer wall is provided with fire-retardant coating, fire-retardant coating's outside is provided with the band layer, the outside of band layer is provided with level and smooth aluminium sheath, the outside of level and smooth aluminium sheath is provided with the protective sheath.

Preferably, the protective sleeve is a PE wear-resistant layer, and the insulating column and the insulating sleeve are both made of cross-linked polyethylene.

Preferably, the thermal-insulated buffer layer is thermal-insulated buffering cotton, circumference is provided with a plurality of groups and strengthens the subassembly in the thermal-insulated buffer layer, strengthen the subassembly and include two sets of strengthening ribs, a set of heat conduction pole and wrap up in the outside adapter sleeve of two sets of strengthening ribs and a set of heat conduction pole.

Preferably, the armor layer is a double-layer metal braid layer, the waterproof layer is a waterproof tape wrapping, and the flame retardant layer is an aluminum silicate ceramic fiber layer.

Preferably, the belting layer is a double-layer bonding integrated structure of cross-linked polyethylene resin and mica tapes.

The crosslinked polyethylene insulated smooth aluminum sheath power cable provided by the utility model has the beneficial effects that: reduce the degree that the cable received the high temperature influence through setting up thermal-insulated buffer layer, improve its result of use in high temperature area, through setting up insulated column and insulating cover, increase cable security, avoid the electric leakage to prevent core portion infiltration through setting up the waterproof layer, through setting up the intensity that strengthens the subassembly and increase the cable, can take place to acutely to rock the fracture when avoiding it to receive strong wind to act on, increase the life of cable, reduce the change frequency.

Drawings

Fig. 1 is a schematic structural view of a crosslinked polyethylene insulated smooth aluminum sheath power cable according to the present invention.

In the figure: 1. a smooth aluminum sheath; 2. an insulating column; 3. an insulating sleeve; 4. an armor layer; 5. a waterproof layer; 6. a thermal insulation buffer layer; 7. a flame retardant layer; 8. a belting layer; 9. reinforcing ribs; 10. a heat conducting rod; 11. a connecting sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1, a crosslinked polyethylene insulated smooth aluminum sheath power cable comprises a core layer, a protective layer, a smooth aluminum sheath 1 and a protective sleeve, wherein the protective layer, the smooth aluminum sheath 1 and the protective sleeve are sequentially arranged outside the core layer, the core layer comprises an insulating column 2 and a plurality of groups of cable cores arranged inside the insulating column 2, an insulating sleeve 3 is arranged outside the insulating column 2, an armor layer 4 is arranged outside the insulating sleeve 3, the protective layer is arranged outside the armor layer 4, the waterproof layer 5 is arranged outside the armor layer 4, a thermal insulation buffer layer 6 is arranged outside the waterproof layer 5, a flame retardant layer 7 is arranged on the outer wall of the thermal insulation buffer layer 6, a belting layer 8 is arranged outside the flame retardant layer 7, the smooth aluminum sheath 1 is arranged outside the belting layer 8, the protective sleeve is arranged outside the smooth aluminum sheath 1, and the degree of the cable influenced by high temperature is reduced by the thermal insulation buffer layer 6, improve its result of use in high temperature area, through setting up insulated column 2 and insulating cover 3, increase cable security, avoid the electric leakage to prevent into water through setting up waterproof layer 5 in nuclear core portion, increase the life of cable.

The protective sleeve is a PE wear-resistant layer, and the insulating column 2 and the insulating sleeve 3 are both made of crosslinked polyethylene.

Thermal-insulated buffer layer 6 is thermal-insulated buffering cotton, and it strengthens the subassembly to be provided with a plurality of groups in the 6 circumference in thermal-insulated buffer layer, strengthens the subassembly including two sets of strengthening ribs 9, a set of heat-conducting rod 10 and wrap up in two sets of strengthening ribs 9 and the outside adapter sleeve 11 of a set of heat-conducting rod 10, through setting up the intensity that strengthens the subassembly and increase the cable, can take place acutely to rock the fracture when avoiding it to receive the strong wind to act on, increases the life of cable, reduces the change frequency.

The armor layer 4 is a double-layer metal braid layer, the waterproof layer 5 is a waterproof tape wrapping, and the flame retardant layer 7 is an aluminum silicate ceramic fiber layer.

The belting layer 8 is a double-layer bonding integrated structure of cross-linked polyethylene resin and mica tapes.

According to the utility model, the heat insulation buffer layer 6 is used for reducing the influence of high temperature on the cable, the buffer effect can be achieved, the use effect of the cable in a high-temperature area is improved, the insulating column 2 and the insulating sleeve 3 are arranged, the safety of the cable is improved, electric leakage is avoided, water is prevented from entering the core part by arranging the waterproof layer 5, the service life of the cable is prolonged, the strength of the cable is improved by arranging the reinforcing component, the cable is prevented from being severely shaken and broken when being subjected to strong wind, the service life of the cable is prolonged, and the replacement frequency is reduced.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The crosslinked polyethylene insulated smooth aluminum sheath power cable comprises a core layer, a protective layer, a smooth aluminum sheath (1) and a protective sleeve, and is characterized in that the protective layer, the smooth aluminum sheath (1) and the protective sleeve are sequentially arranged outside the core layer, the core layer comprises an insulating column (2) and a plurality of groups of cable cores arranged inside the insulating column (2), an insulating sleeve (3) is arranged outside the insulating column (2), an armor layer (4) is arranged outside the insulating sleeve (3), the protective layer is arranged outside the armor layer (4), the protective layer comprises a waterproof layer (5) arranged outside the armor layer (4), a heat insulation buffer layer (6) is arranged outside the waterproof layer (5), a flame retardant layer (7) is arranged on the outer wall of the heat insulation buffer layer (6), and a belting layer (8) is arranged outside the flame retardant layer (7), the outer part of the belting layer (8) is provided with a smooth aluminum sheath (1), and the outer part of the smooth aluminum sheath (1) is provided with a protective sleeve.

2. The cross-linked polyethylene insulated smooth aluminum jacketed power cable of claim 1, characterized in that the protective sheath is a PE abrasion resistant layer, and the insulating column (2) and the insulating sheath (3) are both cross-linked polyethylene.

3. The crosslinked polyethylene insulated smooth aluminum sheath power cable according to claim 1, wherein the thermal insulation buffer layer (6) is thermal insulation buffer cotton, and the inner circumference of the thermal insulation buffer layer (6) is provided with a plurality of sets of reinforcing components, and the reinforcing components comprise two sets of reinforcing ribs (9), a set of heat conducting rods (10), and connecting sleeves (11) wrapping the outer parts of the two sets of reinforcing ribs (9) and the set of heat conducting rods (10).

4. The crosslinked polyethylene insulated smooth aluminum jacketed power cable according to claim 1, characterized in that the armor layer (4) is a double-layer metal braid, the waterproof layer (5) is a waterproof tape wrapping, and the flame retardant layer (7) is an aluminum silicate ceramic fiber layer.

5. The cross-linked polyethylene insulated smooth aluminum jacketed power cable according to claim 1, characterized in that the wrapping layer (8) is a double-layer bonded integral structure of cross-linked polyethylene resin and mica tape.