CN214099205U - Waterproofing type power cable - Google Patents

Abstract

The utility model relates to a waterproofing type power cable, including many insulation core and oversheath, the oversheath cladding still includes the mesh grid at many insulation core's surface, the oversheath is equipped with two-layer water blocking layer and fire-retardant layer in proper order by external orientation insulation core one side, the mesh grid is located between the two-layer water blocking layer, the mesh grid is in the same place with two-layer water blocking layer fixed connection respectively. The braided mesh has certain toughness and intensity usually, when using sharp-pointed article to scrape the braided mesh and draw, the braided mesh can not be easily scratched, place this waterproofing type power cable and use in the sea water, the foreign object in the sea water can cause to wipe the cable and bump, the water blocking layer that is located the outside can be because wipe and bump and cause the damage, the probability that the foreign object wants to scratch the braided mesh after the water blocking layer in the outside blocks can become very low, the water blocking layer that is located the braided mesh inboard continues to play the water blocking effect under the protection of braided mesh, thereby make waterproofing type power cable can normal use.

Description

Waterproofing type power cable

Technical Field

The application relates to the field of cables, in particular to a water-blocking power cable.

Background

The development of cable varieties must accommodate a wide range of applications and modes. With the deepening of research and understanding of water absorption and water tree branches of an insulating layer between cable cores, people are aware of the importance of waterproof performance on medium and high voltage power cables. In areas with high ground water levels or rainy weather throughout the year in the south of the Yangtze river, more and more users and various area occasions place waterproof requirements on cables.

Related art's waterproofing type power cable is shown in fig. 1, including oversheath 12 and many insulated wire core 11, insulated wire core 11 includes insulating cover 111 and many wires 112, and the mutual parallel arrangement of length direction of many wires 112 gathers many wires 112 together, then uses insulating cover 111 including with many wires 112 parcel, oversheath 12 parcel is in many insulated wire core 11 outsides, oversheath 12 is equipped with water blocking layer 122 and fire-retardant layer 121 by external orientation insulated wire core 11 one side in proper order.

The above-mentioned related technical solutions have the following drawbacks: above-mentioned waterproofing type power cable mainly realizes blocking water by the oversheath, and when this waterproofing type power cable used in the sea water for a long time, the foreign object probably caused the cable to wipe and bumped, and when the oversheath caused the damaged back because the exogenic action, the sea water will get into the cable, caused the corruption to insulating sinle silk to influence waterproofing type power cable's normal use.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that the oversheath receives the easy damaged of external force, the application provides a waterproofing type power cable.

The application provides a waterproofing type power cable adopts following technical scheme:

the utility model provides a waterproofing type power cable, includes many insulation core and oversheath, the oversheath cladding is at the surface of many insulation core, still includes the mesh grid, the oversheath is equipped with two-layer water blocking layer and fire-retardant layer in proper order by external orientation insulation core one side, the mesh grid is located between the two-layer water blocking layer, the mesh grid is in the same place with two-layer water blocking layer fixed connection respectively.

Through adopting above-mentioned technical scheme, the braided wire has certain toughness and intensity usually, when using sharp-pointed article to scrape the braided wire, the braided wire can not be easily scratched, place this waterproofing type power cable and use in the sea water, the foreign object in the sea water can cause to wipe the cable and bump, the waterproofing layer that is located the outside can cause the damage owing to wiping, the waterproofing layer in the outside blocks that the probability that the foreign object wants to scratch the braided wire can become very low after, the waterproofing layer that is located the braided wire inboard continues to play the effect of blocking water under the protection of braided wire, thereby make waterproofing type power cable can normal use.

Preferably, the woven mesh is a stainless steel dense woven mesh.

Through adopting above-mentioned technical scheme, stainless steel material has better tensile strength and yield strength, and close netting is interweaved by many stainless steel strips and is connected, has better toughness, can reduce the probability of being lacerated, and the stainless steel has corrosion-resistant characteristic simultaneously, can adapt to underwater operation environment.

Preferably, a plurality of bulges are arranged on the woven mesh, a plurality of grooves matched with the bulges are formed in the waterproof layer, and when the woven mesh is fixedly connected with the two waterproof layers, the bulges are inserted into the grooves and are fixedly connected to the grooves.

Through adopting above-mentioned technical scheme, area of contact grow between braided net and the two-layer water blocking layer can make braided net and the more firm fixed connection of two-layer water blocking layer be in the same place.

Preferably, the insulation core includes insulating cover and many wires, including insulating cover wraps up many wires, insulating cover is equipped with anticorrosive coating and insulating layer by external towards wire one side in proper order.

By adopting the technical scheme, the anticorrosive coating can isolate external corrosive medium, prevent the corrosion of insulating layer, prolong the life of insulating core.

Preferably, the cable also comprises a filler, gaps are reserved between the outer sheath and the plurality of insulated wire cores, and the filler completely fills the gaps.

Through adopting above-mentioned technical scheme, the filler can be with the oversheath with the space between many insulation core fill up, when buckling the oversheath, reduces the deformation range of oversheath, increases the structural strength of oversheath.

Preferably, still include many toughness strips, including insulating cover wraps up many wires and many toughness strips, the length direction of toughness strip sets up in a parallel with the length direction of insulating sinle silk, leave the space between oversheath and many insulating sinle silk and many toughness strips, the filler is with these spaces complete filling.

Through adopting above-mentioned technical scheme, toughness of cable can be increased to the toughness strip, when buckling tensile to the cable, the cable can have better toughness to reduce the cable and appear the cracked probability of inside conductor in tensile the in-process of buckling.

Preferably, the filler is water-blocking ointment.

By adopting the technical scheme, the water-blocking ointment has better waterproof, moistureproof, buffering and bonding effects, and can increase the connection between the insulated cable and the outer sheath while preventing water, so that the insulated cable is better fixedly connected with the outer sheath.

Preferably, the lead is wrapped with an anti-corrosion and anti-oxidation film.

Through adopting above-mentioned technical scheme, anticorrosive anti-oxidation membrane can directly provide the guard action to the wire, improves the life of wire.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the braided net is arranged, so that the braided net usually has certain toughness and strength, and when the braided net is scratched by using a sharp object, the braided net cannot be easily scratched, so that the cable is protected;

2. the toughness strips can increase the toughness of the cable, and the cable can have better toughness when being bent and stretched so as to reduce the probability of internal conductor fracture of the cable in the stretching and bending process;

3. through setting up anticorrosive anti-oxidation membrane, anticorrosive anti-oxidation membrane can directly provide the guard action to the wire, improves the life of wire.

Drawings

Fig. 1 is an overall structural diagram of the related art.

Fig. 2 is a schematic overall structure diagram of an embodiment of the present application.

Description of reference numerals: 11. an insulated wire core; 111. an insulating sleeve; 1111. an anticorrosive layer; 1112. an insulating layer; 112. a wire; 12. an outer sheath; 121. a flame retardant layer; 122. a water resistant layer; 13. a malleable strip; 14. a water-blocking ointment; 15. a stainless steel dense woven mesh; 16. a protrusion; 17. and (4) a groove.

Detailed Description

The present application is described in further detail below with reference to fig. 2.

The embodiment of the application discloses waterproofing type power cable.

Referring to fig. 2, the water blocking type power cable of the embodiment includes a filler, an outer sheath 12 and two insulated wire cores 11, the outer sheath 12 is provided with a channel with two ends communicated, the outer sheath 12 wraps the two insulated wire cores 11, the two insulated wire cores 11 are both located in the channel, the length direction of the two insulated wire cores 11 is parallel to the length direction of the outer sheath 12, a gap exists between the outer sheath 12 and the two insulated wire cores 11, and the filler is used for filling the gap in the channel.

Referring to fig. 2, the insulated wire core 11 includes an insulating sleeve 111 and a plurality of wires 112, the plurality of wires 112 are arranged in parallel to each other in the length direction, the plurality of wires 112 are gathered together, then an anticorrosive and antioxidant coating, such as a graphene anticorrosive and antioxidant coating, is coated on the wires 112, and after the graphene anticorrosive and antioxidant coating is condensed, an anticorrosive and antioxidant film is formed on the wires 112, and then the plurality of wires 112 are wrapped in the insulating sleeve 111. The insulating sheath 111 includes an anti-corrosion layer 1111 and an insulating layer 1112 in sequence from the outside toward the lead 112.

Referring to fig. 2, the waterproofing type power cable further comprises a plurality of toughness strips 13, the toughness strips 13 can be nylon ropes or fiber ropes, the toughness strips 13 are located in the channel, the length direction of the toughness strips 13 is parallel to the length direction of the outer sheath 12, gaps are reserved between the outer sheath 12 and the plurality of insulating wire cores 11 and between the outer sheath 12 and the plurality of toughness strips 13, the filler is water-blocking ointment 14, and the gaps are completely filled with the water-blocking ointment 14.

Referring to fig. 2, the water-blocking type power cable further includes a mesh grid, which is a stainless steel dense mesh grid 15. The outer sheath 12 sequentially comprises two water-resistant layers 122 and a flame-retardant layer 121 from the outside towards one side of the insulating wire core 11, the stainless steel dense weaving net 15 is located between the two water-resistant layers 122, the side surfaces of the two sides of the stainless steel dense weaving net 15 are completely attached to the side surfaces of one side, facing the stainless steel dense weaving net 15, of the two water-resistant layers 122 respectively, and the weaving net is fixedly connected with the two water-resistant layers 122 respectively.

Referring to fig. 2, a plurality of protrusions 16 are welded to two side surfaces of the stainless steel dense-woven mesh 15, the protrusions 16 may also be made of stainless steel, the stainless steel dense-woven mesh 15 forms a cylinder shape in the cable, and the plurality of protrusions 16 are uniformly distributed along the circumferential direction of the stainless steel dense-woven mesh 15 and the height direction of the stainless steel dense-woven mesh 15. The side surfaces of the two layers of water-resistant layers 122 facing the stainless steel dense woven mesh 15 are respectively provided with a plurality of grooves 17 matched with the protrusions 16, and when the woven mesh and the two layers of water-resistant layers 122 are fixedly connected together, the protrusions 16 are inserted into the corresponding grooves 17 and fixedly connected onto the corresponding grooves 17.

The implementation principle of a waterproofing type power cable of the embodiment of the application is: when the waterproof power cable is placed in seawater for use, foreign objects in the seawater may rub the cable, the ordinary slight rubbing of the waterproof layer 122 located at the outermost side can resist the rubbing while preventing water, when the cable is cut with relatively strong force, the waterproof layer 122 located at the outermost side can be cut, and meanwhile, the stainless steel dense mesh 15 can resist the relatively strong cutting due to the fact that the stainless steel dense mesh 15 has good toughness and strength. When the cable is subjected to a relatively violent impact, the whole cable can be deformed and bent, and the stainless steel dense weaving net 15 and the toughness strips 13 can increase the toughness and the strength of the cable so as to reduce the probability of breakage of the inner conductor 112 of the cable in the stretching and bending process.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a waterproofing type power cable, includes many insulation core (11) and oversheath (12), oversheath (12) cladding is at the surface of many insulation core (11), its characterized in that: still include the mesh grid, oversheath (12) are equipped with two-layer water-blocking layer (122) and fire-retardant layer (121) by external orientation insulation sinle silk (11) one side in proper order, the mesh grid is located between two-layer water-blocking layer (122), the mesh grid is in the same place with two-layer water-blocking layer (122) fixed connection respectively.

2. A water-blocking type power cable as claimed in claim 1, wherein: the woven mesh is a stainless steel dense woven mesh (15).

3. A water-blocking type power cable as claimed in claim 1, wherein: the woven mesh is provided with a plurality of bulges (16), the waterproof layer (122) is provided with a plurality of grooves (17) matched with the bulges (16), and when the woven mesh is fixedly connected with the two waterproof layers (122), the bulges (16) are inserted into the grooves (17) and are fixedly connected onto the grooves (17).

4. A water-blocking type power cable as claimed in claim 1, wherein: insulating sinle silk (11) are including insulating cover (111) and many wire (112), including insulating cover (111) wraps up many wire (112), insulating cover (111) are equipped with anticorrosive coating (1111) and insulating layer (1112) in proper order by external orientation wire (112) one side.

5. A water-blocking type power cable as claimed in claim 1, wherein: the cable also comprises a filler, wherein gaps are reserved between the outer sheath (12) and the plurality of insulated wire cores (11), and the filler completely fills the gaps.

6. The water-blocking type power cable as claimed in claim 5, wherein: still include many toughness strips (13), oversheath (12) are including many insulation core (11) and many toughness strips (13) parcel, the length direction of toughness strip (13) is on a parallel with the length direction setting of insulation core (11), leave the space between oversheath (12) and many insulation core (11) and many toughness strips (13), the filler is with these spaces complete filling.

7. The water-blocking type power cable as claimed in claim 5, wherein: the filler is water-blocking ointment (14).

8. The water-blocking type power cable as claimed in claim 4, wherein: the lead (112) is wrapped with an anti-corrosion and anti-oxidation film.

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