CN2762158Y

CN2762158Y - High-efficiency water-proof submarine optical cable

Info

Publication number: CN2762158Y
Application number: CN 200420054367
Authority: CN
Inventors: 黄俊华; 张森明; 张忠
Original assignee: TONGGUANG IT CO Ltd JIANGSU
Current assignee: TONGGUANG IT CO Ltd JIANGSU
Priority date: 2004-12-09
Filing date: 2004-12-09
Publication date: 2006-03-01
Anticipated expiration: 2014-12-09

Abstract

The utility model relates to a high efficiency waterproof submarine optical cable. The utility model is characterized in that waterproof factice filled in an optical unit is hydrophobic hydrogen sucking waterproof factice, and the waterproof factice has the filling rate of above 95% and good waterproof sealing performance. An inner waterproof layer is additionally arranged between the outer side of the optical unit and an inner restrictive coating, a middle waterproof layer is additionally arranged between the inner restrictive coating and a polypropylene rope buffer layer, and an outer waterproof layer is additionally arranged between an armored strengthening strand steel wire layer and a polypropylene rope outer protecting layer. Each waterproof layer is water absorbing resin which expands at high speed with water. The utility model serves as submarine optical communication equipment widely used in offshore shallow sea with the depth of less than 500 meters and deep sea with the depth of larger than 500 meters. The utility model has the advantage of good waterproof performance; the waterproof layers have maintenance-free performance due to the function of automatic recovery by automatically expanding to fill the defect when mild and moderate breakage occurs, and the waterproof layers still have excellent waterproof performance even when the innermost layer of optical unit is broken by an anchor hook, so the occurrence of rejection due to water permeation for a large number of optical cables can be avoided, the reliability of submarine operation for the optical cables is improved, and the operation and maintenance costs for the submarine optical cables are greatly saved.

Description

The submarine optical fiber cable that efficiently blocks water

Affiliated technical field

The optical communication equipment that the utility model relates to a kind of seabed that is laid in is a kind of submarine optical fiber cable that efficiently blocks water.

Background technology

The working environment of submarine optical fiber cable in the ocean is very complicated, requires to have higher water resisting property.The submarine optical fiber cable block-water performance of prior art is relatively poor, the bathypelagic optical cable of the depth of water that is laid in above 500 meters is subjected to the impaired chance of foeign element less relatively, but deep sea water pressure is very big, the outer jacket slightly damaged, radial and axial infiltration is very serious, and fault is enlarged rapidly; The depth of water that is laid in is subjected to submarine geology at 500 meters optical cables with interior neritic area, coastal waters, oceanic sediment, marine microorganism, influence of natural causes such as settled organism and invasion and attack, add marine fishing, the fishing gear hook leads, culture, shipping, anchoring, war, the destruction of human factors such as pilferage and blowdown, the impaired chance of submarine optical fiber cable is more, in case it is impaired, seawater enlarges rapidly to both sides from breaking point, allowing axial seepage velocity by international and national standard is 1000 meters/14 days, because infiltration is to spread to both sides, loss also will double, just consumed 2000 meters submarine optical fiber cables in promptly 14 days, the every km of submarine optical fiber cable is tens thousand of to hundreds thousand of units.In case infiltration, this section optical cable is promptly scrapped, and causes the optical cable operation and maintenance cost high.

Summary of the invention

For overcome the existing ubiquitous water-resisting ability weakness of submarine optical fiber cable, easily impaired, seawater easily from breakage to optical cable axially and radially infiltration, the optical cable consume is big, the deficiency that the operating maintenance expense is high, the utility model provides a kind of submarine optical fiber cable that efficiently blocks water, make its suffer slight, can automatic at any time plugging damaged place when moderate is impaired, the freedom from repairs of recovery certainly function with water permeability resistance energy, even when suffering seriously to damage, also can suppress seawater and axially infiltrate optical cable, significantly reduce optical cable and scrap length, reduce operation and maintenance cost.

The technical scheme that its technical matters that solves the utility model adopts is: a kind of submarine optical fiber cable that efficiently blocks water, comprise the light unit that fibre bundle overcoat metal tube constitutes, the filling greasy for preventing water, light unit outsourcing water blocking layer, restrictive coating, armouring is strengthened the stranded restrictive coating of steel wire, clearance filled pitch between steel wire, the outsourcing water blocking layer, the polypropylene rope protective layer, multilayer flashing and sheath material, the filling rate that it is characterized in that being filled in the greasy for preventing water around the light unit metal pipe inner fiber bundle is brought up to more than 95% from 70%, between light unit and inner sheath, in setting up between inner sheath and polypropylene rope cushion and between armouring reinforcement strand steel wire floor and polypropylene rope outer jacket, in, outer three layers of water blocking layer, this water blocking layer is a kind of high speed expansion water-absorbing resin, the metal tube of light unit can be a stainless steel, aluminium, copper or other suitable metal pipe material, inwall at pipe can also serve as a contrast into nylon, the greasy for preventing water of secretion is that hydrophobic type is inhaled the hydrogen greasy for preventing water around the fibre bundle in plastics or other the suitable nonmetallic materials, optical unit tubes.

The beneficial effects of the utility model be since between each restrictive coating of optical cable, set up in, in, outer three layers of water blocking layer, this water blocking layer is a kind of water-absorbing resin that water expands at a high speed of meeting, when optical cable is subjected to slight and moderate lesion, each water blocking layer is as long as one run into water and infiltrate from breakage from outside to inside, the water-absorbing resin of water blocking layer can expand rapidly, the infiltration slit at timely plugging damaged place and damaged mouth, water blocking layer this has the freedom from repairs self-recovering function and significantly improved the submarine optical fiber cable reliability of operation, reduced maintenance cost consumption.Factor such as hook causes the structure havoc even submarine optical fiber cable is anchored, and when the light unit was damaged, interior water blocking layer and be filled in the high fill-ratio greasy for preventing water light unit in and also can stop and significantly slow down optical cable and axially seep water avoided a large amount of optical cables to scrap.Strive that loss reduces to minimum, improved the reliability of submarine optical fiber cable, significantly saved operation and maintenance cost.

Description of drawings

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

Fig. 1 is the utility model cross sectional representation.

In Fig. 1: 1. greasy for preventing water, 2. metal tube, 3. non-metallic inner liner, 4. optical fiber, 5. interior water blocking layer, 6. inner restrictive coating, 7. centre water blocking layer, 8. polypropylene rope cushion, 9. armouring is strengthened the strand steel wire, 10. filling pitch, 11. outer water blocking layers, 12. polypropylene rope outer jackets.

Embodiment

In Fig. 1, the submarine optical fiber cable that efficiently blocks water comprises that fibre bundle (4) overcoat metal tube (2) constitutes the light unit, the pack completeness that is filled in metal tube (2) inner fiber bundle greasy for preventing water (1) on every side in the light unit is more than 95%, outside the light unit and between the inner restrictive coating (6), between inner restrictive coating (6) and the polypropylene rope cushion (8) and armouring strengthen setting up between strand steel wire (9) and the polypropylene rope outer jacket (12) interior, in, outer three layers of water blocking layer, this three water blocking layer is a kind of water-absorbing resin that water expands at a high speed of meeting.The greasy for preventing water of filling (1) is that hydrophobic type is inhaled the hydrogen greasy for preventing water in the light unit, the metal tube (2) that constitutes the light unit can be stainless steel, aluminium, copper or other suitable metal material, can also serve as a contrast into one deck nylon, plastics or other suitable nonmetallic materials in the inboard of this metal tube (2).

Claims

1, a kind of submarine optical fiber cable that efficiently blocks water comprises the light unit that fibre bundle overcoat metal tube constitutes, inwall in this light unit can also serve as a contrast into one deck nylon, plastics or other suitable nonmetallic materials, fibre bundle and pipe internal pore place's filling greasy for preventing water, light unit outsourcing water blocking layer, restrictive coating, middle water blocking layer, armouring is strengthened steel wire floor, the clearance filled pitch of steel wire, outsourcing water blocking layer and polypropylene rope outer jacket are composited, the pack completeness that it is characterized in that the greasy for preventing water of filling in the light unit is more than 95%, outside the light unit and between inner sheath, in setting up between inner sheath and polypropylene rope cushion and between armouring reinforcement strand steel wire floor and polypropylene rope outer jacket, in, outer three layers of water blocking layer.

2, the submarine optical fiber cable that efficiently blocks water according to claim 1, it is characterized in that described in, in, outer three layers of water blocking layer, be a kind of water-absorbing resin that water expands at a high speed of meeting.

3, the submarine optical fiber cable that efficiently blocks water according to claim 1, the greasy for preventing water that it is characterized in that the filling on every side of described smooth unit inner fiber bundle are that hydrophobic type is inhaled the hydrogen greasy for preventing water.

4, the submarine optical fiber cable that efficiently blocks water according to claim 1, the metal tube that it is characterized in that described formation light unit can be stainless steel, copper, aluminium or other suitable metal pipe material.

5, the submarine optical fiber cable that efficiently blocks water according to claim 1 is characterized in that the metal tube inboard of described formation light unit can also serve as a contrast into one deck nylon, plastics or other suitable nonmetal waterproof material.