CN210271898U

CN210271898U - Direct current cable for outdoor laying

Info

Publication number: CN210271898U
Application number: CN201921483358.9U
Authority: CN
Inventors: 袁玲苑
Original assignee: Jintai Cable Co ltd
Current assignee: Jintai Cable Co ltd
Priority date: 2019-09-07
Filing date: 2019-09-07
Publication date: 2020-04-07
Anticipated expiration: 2029-09-07

Abstract

The utility model discloses an outdoor DC cable of using of laying relates to the DC cable field. The direct current cable for outdoor laying comprises a rubber layer, wherein the inner wall of the rubber layer is fixedly connected with a flame-retardant belting layer, the inner wall of the flame-retardant belting layer is fixedly connected with a silk screen layer, the inner wall of the silk screen layer is fixedly connected with a shielding layer, the inner wall of the shielding layer is fixedly connected with a protective layer, the inner part of the protective layer is provided with twisted conductive cores which are arranged at equal intervals, the outer surface of each twisted conductive core is fixedly connected with an insulating layer, the outer surface of each insulating layer is fixedly connected with a high temperature resistant layer, the outer surface of each high temperature resistant layer is fixedly connected with a heat dissipation layer, this direct current cable for outdoor laying can improve the tensile resistance performance of lag totality through the silk screen layer, has guaranteed the stretching resistance nature of this cable, has avoided the problem that the conductor appears drawing and splitting and exposes in laying process, has improved the security of construction.

Description

Direct current cable for outdoor laying

Technical Field

The utility model relates to a direct current cable technical field specifically is an outdoor direct current cable of using of laying.

Background

A DC cable is a power cable used in DC transmission and distribution system, except the electric characteristics of operation different from AC, the structure of the DC cable is basically the same as that of AC cable, the DC cable is mainly used in long-distance submarine cable line, the core material of the conducting wire used in the DC cable is generally copper wire, the section is selected according to the factors of rated current, allowable voltage drop and short circuit capacity, when selecting the core wire structure, the problem of seawater infiltration after failure should be considered emphatically, water plugging measures such as pressure gathering, welding and water coating sealing material can be generally adopted, the DC cable can transmit power in large distance and large capacity, it is mainly used in submarine cable and underground cable supplying power to large cities, the application of DC transmission has great development in recent years, the DC cable is used in many projects, the tensile resistance of the DC cable used at present is not good, the insulating layer outside the cable is easily cracked when the cable is laid, so that a cable conductor is exposed, potential safety hazards are caused, and construction is inconvenient for laying.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides an outdoor DC cable for laying has solved the DC cable tensile resistance performance that uses at present not good, leads to the outside insulating layer of cable to draw when laying the cable to split easily, makes cable conductor expose, causes the construction potential safety hazard, gives and lays the problem that causes inconvenience.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an outdoor DC cable of laying and using, includes the rubber layer, the fire-retardant band layer of inner wall fixedly connected with on rubber layer, the inner wall fixedly connected with silk screen layer on fire-retardant band layer, the inner wall fixedly connected with shielding layer on silk screen layer, the inner wall fixedly connected with protective layer of shielding layer, the inside of protective layer is equipped with the transposition conductive core body that the equidistance was arranged, every the equal fixedly connected with insulating layer of surface of transposition conductive core body, every the equal fixedly connected with high temperature resistant layer in surface of insulating layer, every the equal fixedly connected with heat dissipation layer in surface on high temperature resistant layer, the equal fixedly connected with waterproof layer in surface on every heat dissipation layer, the inside gap department of protective layer fills has the adhesive.

Preferably, the outer surface of the rubber layer is fixedly connected with a wear-resistant layer, and the thickness of the wear-resistant layer is at least 2 mm.

Preferably, the number of the twisted conductive cores is at least one, and the diameter of each twisted conductive core is at least 10 mm.

Preferably, the thickness of the rubber layer is at least 5 mm, and the thickness of the shielding layer is at least 1 mm.

Preferably, the right end of the rubber layer is sleeved with a sleeve cap, and the outer surface of the sleeve cap is sleeved with a fixed hoop.

Preferably, the right end of the cap is fixedly connected with a sealing ring, the right end of the sealing ring is fixedly connected with a wire connecting ring, and a wire connector is sleeved inside the wire connecting ring.

(III) advantageous effects

The utility model provides an outdoor DC cable of using of laying. The method has the following beneficial effects:

(1) this outdoor direct current cable for laying, through the combination of the electrically conductive core body of a plurality of transposition, form the cable totality, the outside through every electrically conductive core body all is provided with the insulating layer, high temperature resistant layer, heat dissipation layer and waterproof layer, make the outside of the electrically conductive core body of single transposition form the protection inlayer, the insulating nature and the protectiveness of the electrically conductive core body of single transposition have been improved, through setting up high temperature resistant layer, avoid the cable temperature too high, burn out other structural layers, the life-span and the fail safe nature of cable have been improved.

(2) This outdoor direct current cable for laying, the outside on the outside combined layer through the electrically conductive core of a plurality of transposition further sets up the protective layer, the shielding layer, the silk screen layer, fire-retardant band layer and rubber layer, direct current cable's tensile strength has further been improved, make this direct current cable can bear very big pulling force, and can not lead to outer lag stretch breaking, can improve the tensile resistance of lag totality through the silk screen layer, the stretching resistance of this cable has been guaranteed, the problem of conductor is exposed in the stretch breaking has been avoided appearing in laying process, the security of construction has been improved.

Drawings

FIG. 1 is a cross-sectional view of a rubber layer of the present invention;

fig. 2 is a cross-sectional view of a front view of the twisted conductive core of the present invention;

fig. 3 is a side view of the rubber layer of the present invention.

In the figure: the cable comprises a stranded conductive core body 1, an insulating layer 2, an adhesive 3, a protective layer 4, a shielding layer 5, a silk screen layer 6, a flame-retardant wrapping tape layer 7, a rubber layer 8, a wear-resistant layer 9, a high-temperature-resistant layer 10, a heat dissipation layer 11, a waterproof layer 12, a fixed hoop 13, a sleeve cap 14, a sealing ring 15, a wire connecting ring 16 and a wire connecting head 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-3, the utility model provides a technical solution: a direct current cable for outdoor laying comprises a rubber layer 8, a wear-resistant layer 9 is fixedly connected to the outer surface of the rubber layer 8, the thickness of the wear-resistant layer 9 is at least 2 mm, the wear resistance of the rubber layer 8 can be improved, the use safety is improved, the thickness of the rubber layer 8 is at least 5 mm, the thickness of a shielding layer 5 is at least 1 mm, the safety of the cable can be improved, and the use convenience is guaranteed, a flame-retardant wrapping tape layer 7 is fixedly connected to the inner wall of the rubber layer 8, a silk screen layer 6 is fixedly connected to the inner wall of the flame-retardant wrapping tape layer 7, the shielding layer 5 is fixedly connected to the inner wall of the silk screen layer 6, a protective layer 4 is fixedly connected to the inner wall of the shielding layer 5, stranded conductive core bodies 1 which are arranged equidistantly are arranged inside the protective layer 4, the number of the stranded conductive core bodies 1 is at least 6, the diameter, the work efficiency of the cable has been guaranteed, the equal fixedly connected with insulating layer 2 of surface of every transposition conductive core 1, the equal fixedly connected with high temperature resistant layer 10 of surface of every insulating layer 2, the equal fixedly connected with heat dissipation layer 11 of surface of every high temperature resistant layer 10, the equal fixedly connected with waterproof layer 12 of surface of every heat dissipation layer 11, the inside gap department of protective layer 4 fills there is adhesive 3, the right-hand member on rubber layer 8 has cup jointed cap 14, the surface of cap 14 has cup jointed fixed clamp 13, can be convenient for cable and block terminal are connected, improve the convenience of erection joint, the right-hand member fixedly connected with sealing ring 15 of cap 14, the right-hand member fixedly connected with wiring ring 16 of sealing ring 15, wiring head 17 has been cup jointed to the inside of wiring ring 16, can effectually realize the connection of cable, the efficiency of installation has been.

During the use, at first straighten the cable, then insert the block terminal through connector lug 17, it is insulating through insulating layer 2, prevent that the electric current from causing personnel's injury, through insulating layer 2, high temperature resistant layer 10, heat dissipation layer 11 and waterproof layer 12 form inlayer combination lag, through protective layer 4, shielding layer 5, silk screen layer 6, fire-retardant band layer 7 and rubber layer 8 form outer lag, the inlayer lag passes through adhesive 3 and outer lag and combines together, the tensile resistance of lag totality has been improved, the tensile resistance of this cable has been guaranteed, the problem of conductor is exposed in the tensile fracture of having avoided appearing laying process, the security of construction has been improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A DC cable for outdoor laying comprises a rubber layer (8), and is characterized in that: the inner wall of the rubber layer (8) is fixedly connected with a flame-retardant belting layer (7), the inner wall of the flame-retardant belting layer (7) is fixedly connected with a silk screen layer (6), the inner wall of the silk screen layer (6) is fixedly connected with a shielding layer (5), the inner wall of the shielding layer (5) is fixedly connected with a protective layer (4), stranded conductive core bodies (1) which are arranged equidistantly are arranged inside the protective layer (4), the outer surface of each stranded conductive core body (1) is fixedly connected with an insulating layer (2), the outer surface of each insulating layer (2) is fixedly connected with a high temperature resistant layer (10), the outer surface of each high temperature resistant layer (10) is fixedly connected with a heat dissipation layer (11), the outer surface of each heat dissipation layer (11) is fixedly connected with a waterproof layer (12), and the inner gap of the protective layer (4) is filled with an adhesive (3).

2. A dc cable for outdoor laying according to claim 1, wherein: the outer surface of the rubber layer (8) is fixedly connected with a wear-resistant layer (9), and the thickness of the wear-resistant layer (9) is at least 2 mm.

3. A dc cable for outdoor laying according to claim 1, wherein: the number of the twisted conductive cores (1) is at least 6, and the diameter of each twisted conductive core (1) is at least 10 mm.

4. A dc cable for outdoor laying according to claim 1, wherein: the thickness of the rubber layer (8) is at least 5 mm, and the thickness of the shielding layer (5) is at least 1 mm.

5. A dc cable for outdoor laying according to claim 1, wherein: the right end of the rubber layer (8) is sleeved with a sleeve cap (14), and the outer surface of the sleeve cap (14) is sleeved with a fixed hoop (13).

6. A DC cable for outdoor laying according to claim 5, wherein: the right end of the sleeve cap (14) is fixedly connected with a sealing ring (15), the right end of the sealing ring (15) is fixedly connected with a wire connecting ring (16), and a wire connector (17) is sleeved inside the wire connecting ring (16).