CN201576477U

CN201576477U - Trailing cable

Info

Publication number: CN201576477U
Application number: CN200920242735XU
Authority: CN
Inventors: 甘露; 张立昇; 张毅; 李晓红; 文波
Original assignee: Sichuan Jiuzhou Wire and Cable Co Ltd
Current assignee: Sichuan Jiuzhou Wire and Cable Co Ltd
Priority date: 2009-10-26
Filing date: 2009-10-26
Publication date: 2010-09-08
Anticipated expiration: 2019-10-26

Abstract

A trailing cable is characterized by comprising a cable core, a lapped covering layer, a non-mental strand strengthening layer and a hot plastic elastic body outer protective sleeve which are sequentially arranged from inside to outside. The cable core is formed by four insulation line cores; a water blocking yarn, four aramid fiber yarns and four water blocking yarns; the four insulation line cores are adjacent and parallel in pairwise manner; the water blocking yarn and the aramid yarns are arranged in the centers of the four insulation line cores; and the water blocking yarns are evenly arranged on the peripheries of the insulation line cores. The trailing cable has the advantages of fine insulating performance, capability of floating and blocking water longitudinally, strong tensile strength, excellent bending performance and sea-water corrosion environment adaptability and the like, is adaptable to trailing and signal transmitting of light working objects under sea water, and is particularly adaptable to a special detecting cable matching with a sea crossing communication optical cable detecting system in use.

Description

Trailing cable

Technical field

The utility model relates to cable, be particularly related to a kind of trailing cable, be applicable to the towing and signal transmission (for example underwater hardware body detection of light-duty operation object under the seawater, the submarine fiber cable fault location, towing buoys etc.), particularly suitable is done and the matching used special-purpose exploration cable of communications optical cable detection system over strait.

Background technology

Along with the develop rapidly of ocean engineering, submarine fiber cable is to connect the main means that global communication is communicated by letter with island at present.Yet because marine economic activity is frequent day by day, the submarine fiber cable damage accident just sharply increases, if can not find abort situation to repair immediately after submarine fiber cable breaks down, and the influence that can cause serious economy loss and be difficult to expect.In the repair process, need accurately detect and damage the position, this cable under water in the optical cable maintenance system (as being used to connect waterborne, undersea detection) play a part the fault-finding location.Because the environment for use condition is harsher, require that cable security is reliable, volume is little, in light weight, vertically water-resisting ability is strong, and tensile strength is big and have the floating ability of towing, sea water resistance adaptability, crooked pliability is strong.

In the prior art, Chinese patent ZL02235008.X discloses a kind of " ocean acoustic matrix trailing cable ", be to be twisted into cable with the control core by master core and the filling of center rubber and the ground core of setovering, and the filling sheath, braid over braid is tightened, and extrudes oversheath.Trailing cable, in use need often to move, the frequent coiling, and the existing structure cable is when crooked or coiling, because the moulding when stranding of center filled rubber, and cohesive force is bigger between core, make cable core when bending be difficult for slide relative takes place with filling, cause cable outer shaft lead to be elongated like this, interior spindle guide line is compressed, cause the cable conductor generation deformation core that breaks for a long time easily, so that have an accident.Secondly,, can only produce small slip, cause frictional force very big, easily cause the core insulating barrier to damage because core is bigger with the filling cohesive force.These all can cause, and the cable reusability is poor, cable is shorter useful life.And floating, water preventing ability is poor, tensile strength is not fine, the scope of application is narrow.

Summary of the invention

The purpose of this utility model is intended to overcome deficiency of the prior art, provide a kind of safe and reliable, volume is little, in light weight, vertically water-resisting ability is strong, tensile strength is big and have the floating ability of towing, sea water resistance adaptability, a trailing cable that crooked pliability is strong.

Technical solution of the present utility model is: a kind of trailing cable, and its feature part is to comprise: the cable core that is provided with in turn, lapping layer (5), nonmetal bundle are around reinforced layer (6) and thermoplastic elastomer oversheath (7) from inside to outside; Described cable core is by adjacent arranged side by side four thoroughly doing away with edge cores (3) in twos, being arranged at four and thoroughly doing away with the yarn that blocks water (1) and four aramid fiber yarns (2) at edge core (3) centers and evenly be arranged at four and thoroughly do away with edge cores (3) four yarns that block water (4) [can pass through the stranded mode of single-screw stranded (being counterclockwise or stranded clockwise)] formation all around.

In the technical solution of the present utility model: described lapping layer (5) is preferably the waterstop lapping layer.

In the technical solution of the present utility model: described nonmetal bundle is preferably by four aramid fiber yarn symmetry braiding bundles around reinforced layer (6) and is around in the outside formation of lapping layer (5).

In the technical solution of the present utility model: described insulated wire cores (3) is made of the conductor wire core in insulating barrier and the insulating barrier, and described insulating barrier is preferably the linear low density polyethylene (LLDPE) insulating barrier.

In the technical solution of the present utility model: described aramid fiber yarn is preferably the 6320dtex aramid yarn.

In the technical solution of the present utility model: the yarn that blocks water is preferably the ZS-2.0 water blocking yarn.

In the technical solution of the present utility model: described cable core can also be filled with the cable cream that blocks water in the space.

The utlity model has following characteristics and beneficial effect:

(1) the utility model is by interpolation block water yarn, waterstop lapping layer and appropriate design cable volume, can guarantee that cable has vertically to block water and floating function:

Because there are five places four positions, space of thoroughly doing away with the edge core, space, insulated wire cores center maximum, the utility model is filled in gap, insulated wire cores center with block water yarn and four aramid fiber yarns, if there is moisture content to immerse, yarn swollen the rising voluntarily that block water that is the S shape, the infiltration of blocking-up moisture content.Outer space everywhere respectively is filled in the gap with the yarn that blocks water, and in like manner can reach the purpose that blocks water, and is with waterstop that cable core is overlapping closely together wrapped again, forms a stable cable core structure, has good water preventing ability;

Strict control stranding processing external diameter in stranding is processed, the operation sheath extrudes and is guaranteeing that the outside diameter of cable is not more than under the condition of 9mm under giving, and increases the cable jacket nominal thickness as far as possible, regulates cable weight with this, reaches the function that cable can be floating;

(2) insert four aramid fiber yarns at the cable conductor center, the braiding bundle is made nonmetal bundle around reinforced layer around four aramid fiber yarns, can strengthen the tensile strength and the crooked pliability of cable; Tensile strength through theory calculating, the utility model cable can reach more than the 9764N;

(3) adopt good airproof performance, low-density polyethylene material to make the insulating barrier of insulated wire cores, can guarantee that cable has good insulation property;

(4) adopt high strength, it is super that soft the aramid fiber yarn---nonmetallic materials are made reinforcement, can guarantee that cable has good flexible curved, overcome the deficiency of the disconnected core of the easy generation of conductor when cable is crooked, both avoided the generation of accident, improved the cable security reliability;

(5) adopt good airproof performance, density is little, pliability is high thermoplastic elastomer to do outside the sheath, can guarantee that cable has favorable mechanical performance and anti-environmental suitability.

Description of drawings

Fig. 1 is the cross-sectional TV structure schematic diagram of the utility model embodiment;

Fig. 2 is the utility model example structure schematic diagram.

Among the figure: block water yarn, 2-aramid fiber yarn, 3-insulated wire cores, 4-of 1-blocks water yarn, 5-lapping layer, the nonmetal bundle of 6-around reinforced layer, 7-oversheath.

Embodiment

Embodiment 1: referring to each accompanying drawing.

A kind of trailing cable comprises: the cable core that is provided with in turn, lapping layer (5), nonmetal bundle are around reinforced layer (6) and thermoplastic elastomer oversheath (7) from inside to outside; Described cable core is by adjacent arranged side by side four thoroughly doing away with edge cores (3) in twos, being arranged at four and thoroughly doing away with the yarn that blocks water (1) and four aramid fiber yarns (2) at edge core (3) centers and evenly be arranged at four and thoroughly do away with edge cores (3) four yarns that block water (4) [through the stranded mode of single-screw stranded (being counterclockwise or stranded clockwise)] formation all around;

Described lapping layer (5) is the waterstop lapping layer;

Described nonmetal bundle is to be around in the outside formation of lapping layer (5) by four aramid fiber yarn symmetry braiding bundles around reinforced layer (6);

Described insulated wire cores (3) is made of the conductor wire core in insulating barrier and the insulating barrier, and described insulating barrier is the linear low density polyethylene (LLDPE) insulating barrier.

The production process of this embodiment trailing cable is: thoroughly do away with edge core (3) with four, four aramid fiber yarns (2) (being positioned at insulated wire cores (3) center), (one is positioned at insulated wire cores (3) center to five yarns that block water, all the other four are uniformly distributed in insulated wire cores (3) all around) the stranded mode stranding of employing single-screw, while wrapped waterstop lapping layer (5), the braiding bundle forms stable cable core structure (can also be filled with the cable cream that blocks water in the cable core space) around nonmetal bundle around reinforced layer (6) (being restrainted around forming by the braiding of four aramid fiber yarn symmetries) back again, squeeze into one deck thermoplastic elastomer at last and make the oversheath of cable, promptly make product.

That the trailing cable that this embodiment makes has is safe and reliable, volume is little, in light weight, vertically water-resisting ability is strong, tensile strength is big and have a floating ability of towing, sea water resistance adaptability, advantages such as crooked pliability is strong, can be widely used in the underwater hardware body and survey, submarine fiber cable fault location, towing buoy etc.

The utility model is not limited to the foregoing description, and the utility model technical solution is described all can be implemented, and has described good result.

Claims

1. trailing cable is characterized in that comprising: the cable core that is provided with in turn, lapping layer (5), nonmetal bundle are around reinforced layer (6) and thermoplastic elastomer oversheath (7) from inside to outside; Described cable core is by adjacent arranged side by side four thoroughly doing away with edge cores (3) in twos, being arranged at four and thoroughly doing away with the yarn that blocks water (1) and four aramid fiber yarns (2) at edge core (3) centers and evenly be arranged at four and thoroughly do away with edge cores (3) four yarns that block water (4) formation all around.

2. by the described trailing cable of claim 1, it is characterized in that: described lapping layer (5) is the waterstop lapping layer.

3. by claim 1 or 2 described trailing cables, it is characterized in that: described nonmetal bundle is to be around in lapping layer (5) outside by four aramid fiber yarn symmetry braiding bundles to constitute around reinforced layer (6).

4. by claim 1 or 2 described trailing cables, it is characterized in that: described insulated wire cores (3) is made of the conductor wire core in insulating barrier and the insulating barrier, and described insulating barrier is the linear low density polyethylene (LLDPE) insulating barrier.

5. by the described trailing cable of claim 3, it is characterized in that: described insulated wire cores (3) is made of the conductor wire core in insulating barrier and the insulating barrier, and described insulating barrier is the linear low density polyethylene (LLDPE) insulating barrier.