CN205211442U

CN205211442U - Pottery high flexibility fireproof cable

Info

Publication number: CN205211442U
Application number: CN201520604030.3U
Authority: CN
Inventors: 毛黎明; 徐庭元; 黄超; 徐海敏
Original assignee: Jiangsu Zhongmei Cable Co Ltd
Current assignee: Jiangsu Zhongmei Cable Co Ltd
Priority date: 2015-08-12
Filing date: 2015-08-12
Publication date: 2016-05-04
Anticipated expiration: 2025-08-12

Abstract

The utility model discloses a pottery high flexibility fireproof cable, including a cable core, the cable core form by the parallelly connected transposition of four insulation core, the department is equipped with the filler in the space of cable core, around package pottery silicon rubber around the band, at pottery silicon rubber crowded package pottery silicon rubber inner sheath outside the band, at outmost crowded packet of low smoke and zero halogen flame retardant polyolefin sheath of cable outside the cable core, insulation core by the copper conductor, around the first mica tape of package the copper conductor outside, crowded package first mica tape outside second third of the ten heavenly stems insulating layer and constitute around the second mica tape of package outside third insulating layer of the second of the ten heavenly stems. The utility model discloses a pottery silicon rubber and low smoke and zero halogen flame retardant polyolefin NULL's structure for the cable also has the compliance when having fire -resistant, fire -retardant function can be good, light in weight, and the installation of being convenient for, production length and cross -section have also obtained the improvement.

Description

A kind of ceramic high flexibility fireproof cable

Technical field

The utility model relates to field of cable technology, particularly relates to a kind of ceramic high flexibility fireproof cable.

Background technology

Flexible fire-proof cable, mineral insulated cable, in order to reach fireproofing of cable function, what the sheath of the cable of the type generally adopted is that embossing copper makes sheath, and because the fusing point of copper is at 1083 degrees Celsius, therefore in big fire, cable cover(ing) can not burn.The conductor material of cable is copper product, and what insulation adopted is synthetic mica tape, and what packing material adopted is inorganic matter, is generally magnesium hydroxide or aluminium hydroxide or its mixture.Because cable is inner without any organic material material, be inorganic matter, therefore all parts of cable can not burn, and therefore cable has fire protecting performance.

Prior art can be good at fire prevention, mainly there is the shortcoming of following two aspects:

(1) flexibility is poor: because cable cover(ing) is embossing copper pipe, the therefore non-constant of the bending property of whole cable, and the cable general bending radius of the type is cable size at 20D(D) more than, therefore cable is in production, has larger difficulty in laid processes.

(2) production limitation: the restriction making sheath production equipment owing to being subject to line copper, the maximum 1000mm2 in single-core cable cross section of the type, core cross section, multicore cable cross section is 240mm2 to the maximum.Because cable weight is very heavy, therefore, the single continuous length of fireproof cable of prior art is only 1KM, and environment for use has certain limitation.

Utility model content

The utility model, in order to solve the problem of prior art, provides a kind of ceramic high flexibility fireproof cable, and also have softness while having fire-resistant, anti-flaming function good, lightweight, be convenient to mounting and installation, production length and cross section are improved.

A kind of ceramic high flexibility fireproof cable described in the utility model, comprises cable core, and described cable core forms by four insulated wire cores are in parallel stranded; Be provided with filler in the gap of cable core, at the outer wrapped Ceramic silicon rubber twining package tape of cable core, outside Ceramic silicon rubber twining package tape, extrude Ceramic silicon rubber inner sheath, extrude low-smoke and halogen-free flame retardant polyolefin jacket at the outermost layer of cable; Described insulated wire cores by copper conductor, wrapped the first mica tape outside copper conductor, be extruded in second third insulating barrier outside the first mica tape and wrapped the second mica tape outside second third insulating barrier is formed.

Further improvement, the Thickness Ratio between the first described mica tape and the second mica tape is 1:2.

Compared with prior art, the utility model beneficial effect is:

1 ,+the mode of oversheath is protected in the structural formula that the utility model jacket structure adopts, inner sheath is Ceramic silicon rubber inner sheath, oversheath is low-smoke and halogen-free flame retardant polyolefin jacket, compared with prior art, for adopting embossing copper as sheath, therefore the bending radius of cable is less, and the bending radius of such cable can reach 12D, therefore the flexibility of such cable is good, is convenient to lay;

Inner sheath and oversheath adopt the mode extruded, and what the core cross-sectional sizes of cable depended on extruder extrudes size, and therefore single core cross section of cable compared with prior art, is improved.

2, the material of the utility model composition cable is all copper, inorganic matter and Ceramic silicon rubber, can not combustion-supporting medium, and cable still can keep the energising of certain hour at the melting temperature close to copper; The structure that the utility model adopts Ceramic silicon rubber material to form, in flame more than 650 to 1300 degrees Celsius, through the time ablation of 90 to 180 minutes or more, silicon rubber can be burnt till hard ceramic housing in a short period of time, hard ceramic can ensure not short circuit in circuit ablation process, short circuit recklessly, do not prolong combustion, have good fire resistance, in addition cable outer sheath material is low-smoke and halogen-free flame retardant polyolefin jacket, and then enhances the fire resistance of cable.

3, have employed double-deck mica tape structure in insulated wire cores of the present utility model; and adoption rateization design on thickness, makes the overall rounding property of cable better, improves each performance of insulated wire cores; also protect the conductor in insulated wire cores, make the longer service life of cable.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Embodiment

A kind of ceramic high flexibility fireproof cable as shown in Figure 1, comprises cable core, and described cable core forms by four insulated wire cores are in parallel stranded; Described insulated wire cores by copper conductor 1, wrapped the first mica tape 2 outside copper conductor 1, be extruded in second third insulating barrier 3 outside the first mica tape 2 and wrapped the second mica tape 4 outside second third insulating barrier 3 is formed; Inorganics filled thing 5 is provided with again in the gap of cable core, then at the outer wrapped Ceramic silicon rubber twining package tape 6 of cable core, outside Ceramic silicon rubber twining package tape 6, extrude Ceramic silicon rubber inner sheath 7 again, finally extrude low-smoke and halogen-free flame retardant polyolefin jacket 8 at the outermost layer of cable.

In order to make the performance of cable be optimized further, the Thickness Ratio between the first described mica tape and the second mica tape is 1:2, and wherein, the thickness of the first mica tape is 0.25mm-0.5mm.

The utility model embody rule approach is a lot; the above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvement, these improvement also should be considered as protection range of the present utility model.

Claims

1. a ceramic high flexibility fireproof cable, comprises cable core, it is characterized in that: described cable core forms by four insulated wire cores are in parallel stranded; Be provided with filler in the gap of cable core, at the outer wrapped Ceramic silicon rubber twining package tape of cable core, outside Ceramic silicon rubber twining package tape, extrude Ceramic silicon rubber inner sheath, extrude low-smoke and halogen-free flame retardant polyolefin jacket at the outermost layer of cable; Described insulated wire cores by copper conductor, wrapped the first mica tape outside copper conductor, be extruded in second third insulating barrier outside the first mica tape and wrapped the second mica tape outside second third insulating barrier is formed.

2. ceramic high flexibility fireproof cable according to claim 1, is characterized in that: the Thickness Ratio between the first described mica tape and the second mica tape is 1:2.