CN201345237Y

CN201345237Y - Waterproof electric transmission single-core cable laid underwater

Info

Publication number: CN201345237Y
Application number: CNU2009201427263U
Authority: CN
Inventors: 何夕松
Original assignee: Anhui Long'an Cable Group Co Ltd
Current assignee: Anhui Long'an Cable Group Co Ltd
Priority date: 2009-01-14
Filing date: 2009-01-14
Publication date: 2009-11-11
Anticipated expiration: 2019-01-14

Abstract

The utility model relates to a waterproof electric transmission single-core cable laid underwater, which is characterized in that the cable is formed by stranding a plurality of annealed copper wires or water blocking yarns, the outer layer of the cable is coated with thick waterproof paste to form a conductor which can longitudinally block water; a water blocking belt is enwrapped on the conductor to form an inner water blocking belt layer simultaneously; the outside of the inner water blocking belt layer is extruded and enwrapped to form an insulating layer; and an outer water blocking belt layer formed by enwrapping another water blocking belt, a longitudinal enwrapping aluminum plastic belt layer, a PE sheath layer formed through extruding and enwrapping, an aluminum protection layer formed by longitudinally enwrapping an aluminum belt and welding two superposed edges, and an outer sheath layer extruded and enwrapped on the outer surface of the aluminum protection layer are arranged from the insulating layer in sequence form inside to outside. The utility model has the advantages of convenient manufacture and processing, high production efficiency, and multiple waterproof structures along the longitudinal direction and the radial direction, thereby ensuring the safe operation.

Description

Lay waterproof electric power transfer single-core cable under water

Technical field

The utility model relates to a kind of low-voltage-powered transmission cable, relates in particular to a kind of waterproof electric power transfer single-core cable that lays under water, belongs to technical field of electric wires and cables.

Background technology

At present, because the electric operational accident that electric wire infiltration causes is on the increase, cause to a certain degree infringement to relevant industries.At the electric power transfer cable of power supply equipments such as high rainfall area, depression district, harbour, hydroelectric station, ship lock, sewage treatment plant, immersible pump, owing to be laid under water, certain hydraulic pressure effect is arranged, need higher water proofing property.Also occurred more low pressure water-proof cable on the market, but because the manufacturing process difficulty is big, manufacturing cost is higher or unstable properties, is difficult to satisfy the demand in market.

Chinese patent CN201107796 and the disclosed conductor of the Chinese patent CN1529321 employing water-proofing powder that blocks water, but processing difficulties, it is very inhomogeneous that powder adheres to conductor.

The disclosed conductor of Chinese patent CN201051418 blocks water and has adopted coated with adhesive layer on the conductor monofilament, but the radially waterproof of cable has only sheath and waterstop, in the profundal zone or the high place of waterproof requirement defectiveness still.

The disclosed conductor scheme of blocking water of Chinese patent CN2847471 is to increase water blocking yarn in conductor, because conductor is to press drawing and form by pressing mould, has formed several grooves between the adjacent copper monofilament of outermost layer, and is still undesirable.

The disclosed conductor scheme of blocking water of Chinese patent CN1661731 is that the perfusion sealant is filled and formed water blocking layer in conductor, but sealant is filled into conductor inside, and technology difficulty is big.

The utility model content

The utility model is for avoiding above-mentioned existing in prior technology weak point, provide that a kind of manufacturing is easy to process, production efficiency is high, vertically and radially have multiple waterproof construction setting, lay waterproof electric power transfer single-core cable under water with what guarantee security of operation.

The utility model technical solution problem adopts following technical scheme:

The design feature that the utility model lays waterproof electric power transfer single-core cable under water is stranded by many soft copper silks and water blocking yarn, and apply with thick shape waterproof at skin and to form the vertically conductor of waterproof, wrapped waterstop forms the internal layer water blocking tape layer on conductor simultaneously, outside the internal layer water blocking tape layer, extrude the formation insulating barrier, from insulating barrier, what set gradually from inside to outside is the outer water blocking tape layer that forms by wrapped waterstop, vertical alclad is moulded belt, extrude the PE restrictive coating of formation, adopt vertical alclad band and weld two to overlap the alibate that the limit constitutes, and the external sheath layer that is extruded in the alibate appearance.

Compared with the prior art, the utility model beneficial effect is embodied in:

1, the utility model has been taken all factors into consideration the relation of block-water effect and processing, adopted water blocking yarn and be coated with thick shape waterproof to combine, and wrapped group of water band, the conductor block-water effect is good, and processing is simple, and is easy to control;

2, the utility model cable radially waterproof adopted vertical alclad to mould band, extrude PE sheath inner covering structure again, good water-proof effect, easy to process;

3, in the utility model in order to prevent the impact of external force or wedge angle, adopt vertical alclad band, adopt the argon arc welding welding to constitute the aluminium sheath layer in coincidence place of aluminium strip both sides, have waterproof and anti-mechanical external force percussion on the one hand, play shield effectiveness on the other hand;

4, the utility model has adopted water resistance better at external sheath layer, has the PE sheath material of certain rotproofness again, and integral body is provided with scientific and reasonable, and convenient processing and manufacture has the multiple precautionary measures;

5, the utility model can be realized the length manufacturing owing to be single-core cable, reduces the joint of submerged cable, and the water inlet hidden danger that reduces the joint takes place.

Description of drawings

Fig. 1 is the utility model structural representation.

Number in the figure: 1 conductor, 2 internal layer water blocking tape layers, 3 insulating barriers, 4 outer water blocking tape layers, 5 plastic-aluminum belts, 6 are PE restrictive coating, 7 aluminium sheath layers, 8 external sheath layers.

Below by embodiment, the utility model is described in further detail in conjunction with the accompanying drawings.

Embodiment

Referring to Fig. 1, present embodiment is stranded by many soft copper silks and water blocking yarn, and apply with thick shape waterproof at skin and to form the vertically conductor 1 of waterproof, wrapped waterstop forms internal layer water blocking tape layer 2 on conductor 1, outside internal layer water blocking tape layer 2, extrude and form insulating barrier 3, from insulating barrier 3, what set gradually from inside to outside is to mould belt 5, extrude the vertical alclad band of PE restrictive coating 6, employing of formation and weld the alibate 7 that two coincidence limits constitute by outer water blocking tape layer 4, vertical alclad that wrapped waterstop forms, and the external sheath layer 8 that is extruded in alibate 7 appearances.

In concrete the enforcement, the corresponding structure setting also comprises:

Conductor 1 adopts the soft copper silk, and the performance of soft copper silk meets the requirement of the 1st kind or the 2nd kind conductor of GB/T3956; Add waterproofing rope between the monofilament adjacent two layers of conductor 1, the conductor skin is coated with thick shape waterproof, and wrapped group of water band 2;

Insulating barrier 3 adopts the organosilane crosslinked polyethylene insulating material to extrude, and the insulation resistance of this type of material is higher, and dielectric loss is less, and the highest long-term permission serviceability temperature of conductor can reach 90 ℃, and water proofing property is superior simultaneously.

Vertical alclad belt 5 is to adopt the argon arc welding welding to constitute aluminium sheath in coincidence place of aluminium strip both sides, charges into the dry air that is not less than 0.4MPa in aluminium sheath, and pressure is not less than 0.2MPa after the stable gas pressure, and same subsequently temperatures power does not reduce.

External sheath layer 8 employing water proofing properties, weather-resistant property PE sheath material preferably extrude.

Claims

1, lay waterproof electric power transfer single-core cable under water, it is characterized in that by many soft copper silks and water blocking yarn stranded, and apply with thick shape waterproof at skin and to form the vertically conductor of waterproof (1), go up wrapped waterstop at described conductor (1) simultaneously and form internal layer water blocking tape layer (2), outside described internal layer water blocking tape layer (2), extrude and form insulating barrier (3), from described insulating barrier (3), what set gradually from inside to outside is the outer water blocking tape layer (4) that forms by wrapped waterstop, vertical alclad is moulded belt (5), extrude the PE restrictive coating (6) of formation, adopt vertical alclad band and weld two to overlap the alibate (7) that the limit constitutes, and the external sheath layer (8) that is extruded in alibate (7) appearance.