CN104900306A

CN104900306A - Support-type multi-core cable

Info

Publication number: CN104900306A
Application number: CN201510275097.1A
Authority: CN
Inventors: 杨满莹; 付健; 宋恕彬; 严龙新; 毕成立
Original assignee: Northwest Ordos City Cable Co Ltd
Current assignee: Northwest Ordos City Cable Co Ltd
Priority date: 2015-05-27
Filing date: 2015-05-27
Publication date: 2015-09-09

Abstract

The invention discloses a support-type multi-core cable which comprises a cable core, a support in the center of the cable core, a plurality of semicircular grooves in the edge of the support, a conductor embedded in the groove, a water-blocking wrapping band wrapping the cable core, and an oversheath extruded outside the water-blocking wrapping band. The support-type multi-core cable is reasonable in structure, simple in process, low in cost, good in heat radiation performance, and high in current-carrying capacity and is applicable to civil industrial, business and building fields.

Description

A kind of stent-type multicore cable

Technical field

The present invention relates to field of cable technology, particularly relate to a kind of stent-type multicore cable be applied in civilian, industrial, business and building.

Background technology

Traditional cable need at the outer extruded insulation layer of every root conductor when producing, and for keeping cable rounding, need between core to fill a large amount of auxiliary material, cause the use of insulating material and packing material to cause cost high, cost performance is low; Its architectural characteristic is that cable core is adjacent, fill closely knit, this architectural characteristic causes cable and in use easily generates heat, heat not easily distributes, along with the raising cable conductor resistance of temperature increases, current capacity declines, and cable is easily aging thus cause cable useful life to shorten, and serious meeting causes cable short circuit, open circuit even fire.

There is following problem in traditional cable technical matters: 1) cable dissipate heat poor performance, and ampacity is little; 2) conductor needs extruded insulation layer, consumes a large amount of insulating material, and current insulating material mostly is PVC or XLPE, can cause certain environmental pollution when adding hot-extrudable; 3) for keeping the roundness of cable need fill a large amount of auxiliary material, adding material consumption, improve product cost; 4) production process is many, adds power consumption and human cost.

Summary of the invention

The present invention is in order to solve the problem of prior art, and provide a kind of rational in infrastructure, operation is simple, and with low cost, thermal diffusivity is good, the stent-type multicore cable that ampacity is high.

A kind of stent-type multicore cable of the present invention, comprises cable core, is provided with support at cable core center, and described bracket edge place is provided with multiple semi-circular groove, is embedded in conductor at groove, to block water band in cable core outer cladding, extrudes oversheath blocking water outside band.

Further improvement, the quantity of described groove is identical with the quantity of conductor or be greater than the quantity of conductor.

Further improvement, the degree of depth of described groove is identical with the diameter of conductor.

Further improvement, described groove center is provided with circular hole, is conducive to distributing of cable heat.

Further improvement, the diameter of described circular hole is 1-2 times of the diameter of conductor.

A preparation method for stent-type multicore cable, comprises the following steps:

1) drawing of cable conductor and stranded;

2) design of cable center's support and production;

3) conductor embeds support, simultaneously the subsidiary phase-splitting colour band of every root conductor, then to block water band at support and the outer tight wrapped one deck of conductor;

4) one deck protective coverings of cable is extruded blocking water outside band.

Compared with prior art, beneficial effect of the present invention is: (1) conductor does not need extruded insulation, decreases operation, has saved human cost, decreases energy consumption and environmental pollution, and cost can save more than 10%; (2) traditional multicore cable needs stranding, consumes packing material, and stent-type multicore cable does not need to fill and keeps higher roundness, saves packing material cost and reduces by more than 3%; (3) there is circular hole at cable bearer center, has space between rack groove and conductor, be conducive to cable run time heat scatter and disappear, current capacity can improve more than 20%; (4) quantity of groove and size design according to the quantity of conductor and diameter, not only protect conductor, also make conductor more firm in the cable, also make the steadiness of Integral cable; (5) diameter of circular hole is 1-2 times of the diameter of conductor, makes the bearing capacity of cable center larger, larger than common cable 3-4 times.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is the structural representation of support of the present invention.

Embodiment

A kind of stent-type multicore cable as shown in Figure 1, comprises cable core, is provided with support 1 at cable core center, and described support 1 edge is provided with multiple semi-circular groove 2, is embedded in conductor 3 at groove 2, to block water band 4, prevent cable from making moist into water in cable core outer cladding; Extrude flame-proof polyvinyl chloride oversheath 5 blocking water outside band; The quantity of described groove is identical with the quantity of conductor, and be all 4, the degree of depth of groove 2 is identical with the diameter of conductor.

As shown in Figure 2, described support 1 is made up of the electrical plastics with insulation property, support 1 center has been provided with circular hole 6, be conducive to cable distribute heat in running, improve cable conduction performance, in the difference of support appearance according to cable core number and cross-sectional area of conductor, there is the groove that corresponding number is different with diameter, ensure that the conductor of cable puts into rack groove.

The preparation method of this stent-type multicore cable, comprises the following steps:

1) drawing of cable conductor and stranded;

2) design of cable center's support and production;

Embody rule approach of the present invention is a lot, and the above is only the preferred embodiment of the present invention, should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvement, these improvement also should be considered as protection scope of the present invention.

Claims

1. a stent-type multicore cable, comprises cable core, it is characterized in that: be provided with support at cable core center, and described bracket edge place is provided with multiple semi-circular groove, is embedded in conductor at groove, to block water band in cable core outer cladding, extrudes oversheath blocking water outside band.

2. according to the stent-type multicore cable described in claim 1, it is characterized in that: the quantity of described groove is identical with the quantity of conductor or be greater than the quantity of conductor.

3. according to the stent-type multicore cable described in claim 1, it is characterized in that: the degree of depth of described groove is identical with the diameter of conductor.

4. according to the stent-type multicore cable described in claim 1, it is characterized in that: described groove center is provided with circular hole.

5. according to the stent-type multicore cable described in claim 4, it is characterized in that: the diameter of described circular hole is 1-2 times of the diameter of conductor.