CN201796643U

CN201796643U - High-strength armor structure for single-core high-voltage submarine cable

Info

Publication number: CN201796643U
Application number: CN2010205154817U
Authority: CN
Inventors: 叶信宏; 夏峰; 张磊
Original assignee: NINGBO ORIENT WIRES CABLES CO Ltd
Current assignee: NINGBO ORIENT WIRES CABLES CO Ltd
Priority date: 2010-09-03
Filing date: 2010-09-03
Publication date: 2011-04-13
Anticipated expiration: 2020-09-03

Abstract

The utility model discloses a high-strength armor structure for a single-core high-voltage submarine cable. The structure comprises a round bronze wire armor layer and a non-magnetic stainless steel wire armor layer, wherein the round bronze wire armor layer is arranged outside an inner sheath of the single-core high-voltage submarine cable; the non-magnetic stainless steel wire armor layer is arranged outside the round bronze wire armor layer. The structure has the advantages that: on one hand, armored eddy current loss can be reduced effectively compared with a round zinc-plated steel wire armor layer by armoring the submarine cable by adopting double layers, namely the round bronze wire armor layer and the non-magnetic stainless steel wire armor layer continuously; one the other hand, because only one round bronze wire armor layer is used in the armor structure, the cost of the armor structure is greatly reduced compared with double flat bronze wire armor layers. Simultaneously because the non-magnetic stainless steel wire armor layer is arranged outside the round bronze wire armor layer, the overall mechanical performance of the submarine cable can be improved by the utilization of non-magnetic stainless steel wires; therefore, the resistance of the submarine cable to a severe environment can be improved greatly; moreover, the armor structure can be better suitable to be used in high-voltage submarine cables of 100 kV or above.

Description

The high strength sheathed structure of a kind of single core high pressure sea cable

Technical field

The utility model relates to a kind of single core high pressure sea cable, especially relates to the high strength sheathed structure of a kind of single core high pressure sea cable.

Background technology

Fig. 2 a, Fig. 2 b and Fig. 3 a, Fig. 3 b are respectively the structural representation of at present comparatively common in the world two kinds of submarine cables.Submarine cable shown in Fig. 2 a and Fig. 2 b is the submarine cable of zinc-plated round steel wire armouring, it mainly comprises conductor 21 and is set in turn in conductor 21 conductor shield 22 outward, insulating barrier 23, insulation screen 24, metallic sheath 27, inner sheath 28, zinc-plated round steel wire armour 210 and serving 211, the insulation screen 24 outer zone of swelling 25 that are arranged with, be provided with the PP gasket for packing 29 that is used for the rounding cable between inner sheath 28 and the zinc-plated round steel wire armour 210, be provided with optical cable unit 26 in the PP gasket for packing 29, the submarine cable of this structure is because it adopts zinc-plated round steel wire to carry out armouring, thereby cost is lower, but if when being applied to the zinc-plated round steel wire armour in this submarine cable in the extra large cable of 110kV and above grade, can produce very big armouring eddy current loss during operation, comparatively serious to the ampacity influence of extra large cable like this, also will badly influence the loss of Hai Lanxianlu simultaneously.Submarine cable shown in Fig. 3 a and Fig. 3 b is the submarine cable of double-deck flat bronze wire armouring, the structure of the submarine cable of the zinc-plated round steel wire armouring that its structure and Fig. 2 a and Fig. 2 b provide is basic identical, it mainly comprises conductor 31 and is set in turn in conductor 31 conductor shield 32 outward, insulating barrier 33, insulation screen 34, metallic sheath 36, inner sheath 37, double-deck flat bronze wire armour 38 and serving 39, the insulation screen 34 outer zone of swelling 35 that are arranged with, the armour that the submarine cable of this structure adopts is double-deck flat bronze wire armour, the flat bronze wire of ground floor promptly is set outside inner sheath, the flat bronze wire of the second layer is set outside the flat bronze wire of ground floor again, but because the price of copper is very expensive, it is provided with the cost that two-layer flat bronze wire has increased extra large cable undoubtedly greatly, economic benefit is relatively poor, because the tensile strength of copper is less, therefore directly influenced the overall mechanical properties of extra large cable simultaneously.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of single core high pressure sea cable that is used for, and in effective minimizing armouring eddy current loss, can improve the high strength sheathed structure of the anti-adverse environment performance of extra large cable greatly.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: the high strength sheathed structure of a kind of single core high pressure sea cable comprises the outer blue or green round copper wire armour non-magnetic rustproof steel wire armour outer with being arranged at described blue or green round copper wire armour of inner sheath that is arranged at single core high pressure sea cable.

Described blue or green round copper wire armour is for being made of the blue or green round copper wire of the armoured one deck of the outer surface of described inner sheath.

Described non-magnetic rustproof steel wire armour is for to be made of the armoured one deck non-magnetic rustproof of described blue or green round copper wire armour steel wire.

Compared with prior art, advantage of the present utility model is to adopt blue or green round copper wire armour and non-magnetic rustproof steel wire armour double layer continuous that extra large cable is carried out armouring, compares with zinc-plated round steel wire armour, can effectively reduce armouring eddy current loss; On the other hand, because this sheathed structure has only used the blue or green round copper wire armour of one deck, compare with the flat bronze wire armour of bilayer, greatly reduce the cost of sheathed structure, simultaneously owing to outside blue or green round copper wire armour, be provided with one deck non-magnetic rustproof steel wire armour, by the utilization of non-magnetic rustproof steel wire, can improve the overall mechanical properties of extra large cable, thereby can improve the opposing adverse circumstances performance of extra large cable greatly; In addition, this sheathed structure can be applicable in the submarine cable of 110kV and above voltage levels preferably.

Description of drawings

Fig. 1 a is the part perspective view of the extra large cable of employing high strength sheathed structure of the present utility model;

Fig. 1 b is the schematic top plan view of Fig. 1 a;

Fig. 2 a is the part perspective view of the submarine cable of existing zinc-plated round steel wire armouring;

Fig. 2 b is the schematic top plan view of Fig. 2 a;

Fig. 3 a is the part perspective view of the submarine cable of the flat bronze wire armouring of existing bilayer;

Fig. 3 b is the schematic top plan view of Fig. 3 a.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

The high strength sheathed structure of a kind of single core high pressure sea cable that the utility model proposes, shown in Fig. 1 a and Fig. 1 b, it comprises blue or green round copper wire armour 19 and the non-magnetic rustproof steel wire armour 110 that is arranged at outside the blue or green round copper wire armour 19 outside the inner sheath 18 that is arranged at single core high pressure sea cable.At this, constitute blue or green round copper wire armour 19 at the blue or green round copper wire of the armoured circle of outer surface of the inner sheath 18 of single core high pressure sea cable, constitute non-magnetic rustproof steel wire armours 110 at blue or green round copper wire armour 19 armoured circle non-magnetic rustproof steel wires.

Fig. 1 a and Fig. 1 b have provided the structural representation of a kind of extra large cable that adopts this sheathed structure, this sea cable wrap is drawn together conductor 1 and is set in turn in conductor 11 conductor shield 12, insulating barrier 13, insulation screen 14, zone of swelling 15, metallic sheath 17, inner sheath 18, blue or green round copper wire armour 19, non-magnetic rustproof steel wire armour 110 and serving 111 outward, is provided with optical cable unit 16 in the blue or green round copper wire of blue or green round copper wire armour 19.

Table 1 has provided the submarine cable of the submarine cable of zinc-plated round steel wire armouring, double-deck flat bronze wire armouring and has adopted the comparison of ampacity, mechanical performance and the sheathed structure cost of the extra large cable of this sheathed structure.

The extra large cable of the zinc-plated round steel wire armouring of table 1, the extra large cable of double-deck flat bronze wire armouring and adopt the performance comparison sheet of the extra large cable of this sheathed structure

As can be seen from Table 1, this sheathed structure is compared with zinc-plated round steel wire armour, though increased on cost a lot, adopts the ampacity and the mechanical performance of the extra large cable of this sheathed structure to be greatly improved; This sheathed structure is compared with the flat bronze wire armour of bilayer, though on cost, slightly increased a bit, and adopt the ampacity of the extra large cable of this sheathed structure also to reduce a bit slightly, the mechanical performance of extra large cable has improved about 2.4 times.By analytical table 1, suffice to show that this sheathed structure can effectively reduce armouring eddy current loss, improve the ampacity of extra large cable, can improve the mechanical performance of extra large cable greatly simultaneously, thereby improve the anti-adverse environment performance of extra large cable.

Claims

1. the high strength sheathed structure of single core high pressure sea cable is characterized in that comprising the outer blue or green round copper wire armour non-magnetic rustproof steel wire armour outer with being arranged at described blue or green round copper wire armour of inner sheath that is arranged at single core high pressure sea cable.

2. the high strength sheathed structure of a kind of single core high pressure according to claim 1 sea cable is characterized in that described blue or green round copper wire armour is for being made of the blue or green round copper wire of the armoured one deck of the outer surface of described inner sheath.

3. the high strength sheathed structure of a kind of single core high pressure according to claim 1 and 2 sea cable is characterized in that described non-magnetic rustproof steel wire armour is for to be made of the armoured one deck non-magnetic rustproof of described blue or green round copper wire armour steel wire.