CN208460458U

CN208460458U - A kind of water-resistant power cable

Info

Publication number: CN208460458U
Application number: CN201721882665.5U
Authority: CN
Inventors: 孙皓; 高天磊; 高红阳
Original assignee: Wuxi Jiangnan Cable Co Ltd
Current assignee: Wuxi Jiangnan Cable Co Ltd
Priority date: 2017-12-28
Filing date: 2017-12-28
Publication date: 2019-02-01
Anticipated expiration: 2027-12-28

Abstract

The utility model discloses a kind of water-resistant power cable, including cable core, the cable core is twisted more by thoroughly doing away with the edge core that blocks water；Fill waterproofing rope in the gap of the cable core, wrapped first semiconductor waterstop after cable core is externally provided with copper strip shielding layer, further around wrapping the first waterstop, PVC sheath is extruded outside the first waterstop, galvanized steel bar silk armor is wound again after continuous wrapped buffer-type waterstop outside PVC sheath, wrapped second waterstop, extrudes MDPE oversheath outside the second waterstop outside galvanized steel bar silk armor；The utility model has very strong water stop function, and rainwater cannot be introduced into conductor, and the oxidation for causing conductor, corrosion will not be immersed because of moisture, to influence the electrical property of cable, or even line-outage contingency is abnormal, so that the service life of cable greatly improves.

Description

A kind of water-resistant power cable

Technical field

The utility model relates to field of cables, specifically a kind of water-resistant power cable.

Background technique

It is further speeded up along with the rapid growth of China's economic and industrialization, Development of China's Urbanization, to urban distribution network Etc. the construction requirements of infrastructure increasingly improve, developed regions city and provincial capital require urban central zone to use ground one after another Lower power cable transmits electric energy.Meanwhile electric power is the premise and basis of the national economic development, with the quick hair of national economy Exhibition, electricity needs increase severely, and electrical network capacity abruptly increase, power of motor increases, and electric power facility is towards large capacity (high voltage, high current, height Frequently transmission direction develops).

The intrusion of moisture be often power cable by destroy, service life is affected the main reason for.Moisture immerses Approach is mainly to cause oxidation, the corrosion of conductor out of the end intrusion cable of the sheath and cable of cable inner conductor, from And the electrical property of cable is influenced, or even be abnormal line-outage contingency；Moisture penetrates into insulating layer, under the action of strong electrical field, insulation Layer can generate " water tree ", accelerate the voltage ageing of cable, lead to cable breakdown accident, reduce cable service life.In order to prevent The intrusion of moisture, it is desirable that close very close to each other between each structure of cable.

Utility model content

In order to solve the problems existing in the prior art, the utility model provides a kind of water-resistant power cables, have very Strong water stop function, rainwater cannot be introduced into conductor, the oxidation for causing conductor, corrosion will not be immersed because of moisture, to influence The electrical property of cable, or even it is abnormal line-outage contingency, so that the service life of cable greatly improves.

A kind of water-resistant power cable described in the utility model, including cable core, the cable core are blocked water line more by thoroughly doing away with edge Core is twisted；Waterproofing rope is filled in the gap of the cable core, and wrapped the first half lead after cable core is externally provided with copper strip shielding layer Electric waterstop extrudes PVC sheath further around the first waterstop is wrapped outside the first waterstop, continuous wrapped slow outside PVC sheath Galvanized steel bar silk armor is wound after stamp waterstop again, wrapped second waterstop outside galvanized steel bar silk armor, second MDPE oversheath is extruded outside waterstop；The insulation core that blocks water includes that the twisted aluminium that presses of outer surface longitudinal wrap waterstop is led Body, wrapped second semiconductor waterstop, extrudes conductor shield outside the second semiconductor waterstop outside waterstop, in conductor screen It covers and extrudes the crosslinked polyetylene insulated layer of water resistant tree outside layer, wrapped third semiconductor blocks water outside the crosslinked polyetylene insulated layer of water resistant tree Band.

It is further improved, the width of the waterstop is 10-40mm.

It is further improved, described the, a semiconductor waterstop, the second semiconductor waterstop, the thickness of three semiconductor waterstops Degree is 0.3mm.

Be further improved, the conductor shield with a thickness of 0.8mm.

Be further improved, the crosslinked polyetylene insulated layer of water resistant tree with a thickness of 3.4mm.

It is further improved, copper strip shielding the thickness 0.1mm, wide 40mm.

Be further improved, the PVC sheath with a thickness of 1.9mm.

Be further improved, the MDPE oversheath with a thickness of 3.6mm.

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

The main improvement of the utility model is to be equipped with multilayer stop water, the knot that blocks water of all stop waters and outer layer Structure be combined with each other, wrapped close, seamless, no bottom pour ladle, so that either conductor, entire conductor layer and entire in entire cable Cable is all wrapped up by water blocking layer and being protected, so that conductor has very strong water stop function, rainwater be cannot be introduced into conductor, will not be because of Moisture immerses the oxidation for causing conductor, corrosion, to influence the electrical property of cable, or even line-outage contingency is abnormal, so that electric The service life of cable greatly improves；Cable is externally provided with multilayer stop water, wrapped close between every layer and every layer, and uses Continuous wrapped, seamless between layers, rainwater also cannot be introduced into cable, cause cable leakage, bring security risk.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

A kind of water-resistant power cable as shown in Figure 1, including cable core, the cable core are twisted more by thoroughly doing away with the edge core that blocks water It forms；The insulation core that blocks water includes that outer surface longitudinal wrap waterstop 2 presses stranded aluminum conductor 1, wrapped outside waterstop 2 Second semiconductor waterstop 3, conductor shield 4 is extruded outside the second semiconductor waterstop, water resistant is extruded outside conductor shield Crosslinked polyetylene insulated layer 5 is set, the wrapped third semiconductor waterstop 6 outside the crosslinked polyetylene insulated layer of water resistant tree；The cable Waterproofing rope 7 is filled in the gap of core, wrapped first semiconductor waterstop 9 after cable core is externally provided with copper strip shielding layer 8, further around packet the One waterstop 10, extrudes PVC sheath 11 outside the first waterstop, the continuous wrapped buffer-type waterstop 12 outside PVC sheath Wind galvanized steel bar silk armor 13 again afterwards, wrapped second waterstop 14 outside galvanized steel bar silk armor, in the second waterstop MDPE oversheath 15 is extruded outside；

Wherein, the width of the waterstop is 10-40mm, described the, a semiconductor waterstop, the second semiconductive block water Band, three semiconductor waterstops thickness be 0.3mm；The conductor shield with a thickness of 0.8mm, the water resistant tree is handed over Join polyethylene layer with a thickness of 3.4mm, copper strip shielding thickness 0.1mm, the wide 40mm, the MDPE oversheath With a thickness of 3.6mm, the PVC sheath with a thickness of 1.9mm.

There are many utility model concrete application approach, and the above is only the preferred embodiment of the utility model, should It points out, for those skilled in the art, without departing from the principle of this utility model, can also make Several improvement out, these improvement also should be regarded as the protection scope of the utility model.

Claims

1. a kind of water-resistant power cable, including cable core, it is characterised in that: the cable core by thoroughly do away with more edge block water core it is twisted and At；The gap filling waterproofing rope of the cable core, wrapped first semiconductor waterstop after cable core is externally provided with copper strip shielding layer, Further around the first waterstop is wrapped, PVC sheath is extruded outside the first waterstop, continuous wrapped buffer-type blocks water outside PVC sheath Galvanized steel bar silk armor is wound again after band, wrapped second waterstop outside galvanized steel bar silk armor, outside the second waterstop Extrude MDPE oversheath；The insulation core that blocks water includes that outer surface longitudinal wrap waterstop presses stranded aluminum conductor, is being blocked water With outer wrapped second semiconductor waterstop, conductor shield is extruded outside the second semiconductor waterstop, is squeezed outside conductor shield The crosslinked polyetylene insulated layer of packet water resistant tree, the wrapped third semiconductor waterstop outside the crosslinked polyetylene insulated layer of water resistant tree.

2. water-resistant power cable according to claim 1, it is characterised in that: the width of the waterstop is 10-40mm.

3. water-resistant power cable according to claim 1, it is characterised in that: first semiconductor waterstop, the second half Conductive waterstop, three semiconductor waterstops thickness be 0.3mm.

4. water-resistant power cable according to claim 1, it is characterised in that: the conductor shield with a thickness of 0.8mm。

5. water-resistant power cable according to claim 1, it is characterised in that: the crosslinked polyetylene insulated layer of water resistant tree With a thickness of 3.4mm.

6. water-resistant power cable according to claim 1, it is characterised in that: the described copper strip shielding thickness 0.1mm, it is wide 40mm。

7. water-resistant power cable according to claim 1, it is characterised in that: the PVC sheath with a thickness of 1.9mm。

8. water-resistant power cable according to claim 1, it is characterised in that: the MDPE oversheath with a thickness of 3.6mm。