CN203774002U

CN203774002U - High-voltage cross linked polyethylene insulated power cable

Info

Publication number: CN203774002U
Application number: CN201420095208.1U
Authority: CN
Inventors: 冯永朋
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-03-04
Filing date: 2014-03-04
Publication date: 2014-08-13
Anticipated expiration: 2024-03-04

Abstract

The utility model relates to a high-voltage cross linked polyethylene insulated power cable. The power cable is provided with a high density polyethylene outer sheath, a wrinkled copper jacket layer, a semi-conductive buffer water-blocking tape and an inner layer polyurethane sheath, which are arranged from outside to the inside, copper core winding groups are disposed inside the inner layer polyurethane sheath, a polyurethane foam layer is filled between the copper core winding groups and the inner layer polyurethane sheath, and a plurality of protruding strips are disposed on the outer surface of the wrinkled copper jacket layer and long the extension direction of the cable, and are embedded into the inner side surface of the high density polyethylene outer sheath. The high-voltage cross linked polyethylene insulated power cable is simple in structure; with the wrinkled copper jacket layer and the protruding strips, the overall structure wholeness and the bearing capacity of the cable are greatly raised; the hinged structure of the copper core winding groups is stable; and with the polyurethane foam layer, the tenacity of the cable is raised, and thus the application range of the cable is enlarged.

Description

High-voltage cross-linking polythene insulated power cable

Technical field

The utility model relates to a kind of high-voltage cross-linking polythene insulated power cable.

Background technology

In known technical field, China's wires and cables industry has the above number of the enterprise of scale numerous at present, but industry concentration ratio is low, the capability of independent innovation is weak.At present, high pressure (as 132kV) power cable with cross-linked polyethylene insulation production kind at home only has aluminium cover class and plumbous two kinds of the classes of overlapping, but this power cable mechanical strength of two types and also Shortcomings of pressure-bearing scope, convenient not in the time transporting, lay, and it is subject to the limitation of material property, cable electrical performance Shortcomings; Therefore existing high-voltage cross-linking polythene insulated power cable kind is single, manufacturer is numerous, and Market competition can not meet the demand of higher market development, deficiency in economic performance.

Utility model content

The technical problems to be solved in the utility model is: overcome the problems referred to above, provide that a kind of Stability Analysis of Structures is reliable, toughness is high, be applicable to the high-voltage cross-linking polythene insulated power cable of bad working environments.

The utility model solves the technical scheme that its technical problem adopts: a kind of high-voltage cross-linking polythene insulated power cable, there is the high density polyethylene (HDPE) oversheath setting gradually from outside to inside, wrinkle copper sheathing layer, semi-conductive buffer water-blocking band and internal layer polyurethane jacket, be provided with copper core winding group at the internal layer of described internal layer polyurethane jacket, described copper core winding group has four main copper cores, between described main copper core, head and the tail are close together in turn, between two adjacent main copper cores, be equipped with auxiliary copper core, also be provided with an auxiliary copper core at four Zhu Tongxin centers, described main copper core and auxiliary copper core are intertwined and form copper core winding group, between described copper core winding group and internal layer polyurethane jacket, be filled with polyurethane foam, at the outer surface of described wrinkle copper sheathing layer and along being provided with several raised items in the extension direction of cable, and described raised item is embedded in the inner surface of high density polyethylene (HDPE) oversheath.

Further, as a kind of concrete execution mode, the thickness of the oversheath of high density polyethylene (HDPE) described in the utility model, semi-conductive buffer water-blocking band and internal layer polyurethane jacket is followed successively by 2mm, 2mm, 1mm.

Further, as a kind of concrete execution mode, the copper sheathing of wrinkle described in the utility model layer is the tubular structure being made up of copper belt welding bundle line.

The beneficial effects of the utility model are: the utility model is simple in structure, by the raised item of wrinkle copper sheathing layer and setting, can greatly improve overall structure whole step, the bearing capacity of cable, copper core winding group articulated structure is firm simultaneously, and can improve the toughness of cable by polyurethane foam, increase the scope that cable uses.

Brief description of the drawings

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is structural representation of the present utility model;

In figure: 1. high density polyethylene (HDPE) oversheath, 2. wrinkle copper sheathing layer, 3. semi-conductive buffer water-blocking band, 4. internal layer polyurethane jacket, 5. copper core winding group, 51. main copper cores, 52. auxiliary copper cores.

Embodiment

By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, and basic structure of the present utility model is only described in a schematic way, and therefore it only shows the formation relevant with the utility model.

The preferred embodiment of the utility model high-voltage cross-linking polythene insulated power cable as shown in Figure 1, there is the high density polyethylene (HDPE) oversheath 1 setting gradually from outside to inside, wrinkle copper sheathing layer 2, semi-conductive buffer water-blocking band 3 and internal layer polyurethane jacket 4, be provided with copper core winding group 5 at the internal layer of described internal layer polyurethane jacket 4, described copper core winding group 5 has four main copper cores 51, between described main copper core 51, head and the tail are close together in turn, between two adjacent main copper cores 51, be equipped with auxiliary copper core 52, also be provided with an auxiliary copper core 52 at four main copper Xin51 centers, described main copper core 51 and auxiliary copper core 52 are intertwined and form copper core winding group 5, between described copper core winding group 5 and internal layer polyurethane jacket 4, be filled with polyurethane foam, at the outer surface of described wrinkle copper sheathing layer 2 and along being provided with several raised items in the extension direction of cable, and described raised item is embedded in the inner surface of high density polyethylene (HDPE) oversheath 1.

The thickness of described high density polyethylene (HDPE) oversheath 1, semi-conductive buffer water-blocking band 3 and internal layer polyurethane jacket 4 is followed successively by 2mm, 2mm, 1mm.

Described wrinkle copper sheathing layer 2 is the tubular structures that are made up of copper belt welding bundle line.

The utility model is simple in structure, by the raised item of wrinkle copper sheathing layer and setting, can greatly improve overall structure whole step, the bearing capacity of cable, copper core winding group articulated structure is firm simultaneously, and can improve the toughness of cable by polyurethane foam, increase the scope that cable uses.

Taking above-mentioned foundation desirable embodiment of the present utility model as enlightenment, by above-mentioned description, relevant staff can, not departing from the scope of this utility model technological thought, carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on specification, must determine its technical scope according to claim scope.

Claims

1. a high-voltage cross-linking polythene insulated power cable, it is characterized in that: there is the high density polyethylene (HDPE) oversheath (1) setting gradually from outside to inside, wrinkle copper sheathing layer (2), semi-conductive buffer water-blocking band (3) and internal layer polyurethane jacket (4), be provided with copper core winding group (5) at the internal layer of described internal layer polyurethane jacket (4), described copper core winding group (5) has four main copper cores (51), between described main copper core (51), head and the tail are close together in turn, between adjacent two main copper cores (51), be equipped with auxiliary copper core (52), also be provided with an auxiliary copper core (52) at the center of four main copper cores (51), described main copper core (51) and auxiliary copper core (52) are intertwined and form copper core winding group (5), between described copper core winding group (5) and internal layer polyurethane jacket (4), be filled with polyurethane foam, at the outer surface of described wrinkle copper sheathing layer (2) and along being provided with several raised items in the extension direction of cable, and described raised item is embedded in the inner surface of high density polyethylene (HDPE) oversheath (1).

2. high-voltage cross-linking polythene insulated power cable as claimed in claim 1, is characterized in that: the thickness of described high density polyethylene (HDPE) oversheath (1), semi-conductive buffer water-blocking band (3) and internal layer polyurethane jacket (4) is followed successively by 2mm, 2mm, 1mm.

3. high-voltage cross-linking polythene insulated power cable as claimed in claim 1, is characterized in that: described wrinkle copper sheathing layer (2) is the tubular structure being made up of copper belt welding bundle line.