CN202422829U

CN202422829U - Outer protecting bush fireproof cable of corrugation copper pipe

Info

Publication number: CN202422829U
Application number: CN2012200485831U
Authority: CN
Inventors: 任燕; 于洪才
Original assignee: SHENZHEN PENGCHENG CABLE CO Ltd
Current assignee: SHENZHEN PENGCHENG CABLE CO Ltd
Priority date: 2012-02-16
Filing date: 2012-02-16
Publication date: 2012-09-05
Anticipated expiration: 2022-02-16

Abstract

The utility model relates to an improvement of an outer protecting bush fireproof cable of a corrugation copper pipe. The outer protecting bush fireproof cable is good in fireproof effect, capable of preventing hard contact between the corrugation copper pipe and an inner cushion layer material. The outer protecting bush fireproof cable comprises an insulating wire core formed by a cable conductor, a high temperature resistant mica tape outside the cable conductor and an insulating layer outside the high temperature resistant mica tape, and a corrugated pipe is arranged outside the insulating wire core. The outer protecting bush fireproof cable is characterized in that mineral powder mud is arranged between the corrugated pipe and the insulating wire core.

Description

A kind of ripple copper pipe oversheath fireproof cable

Technical field

The utility model relates to a kind of improvement of ripple copper pipe oversheath fireproof cable structure.

Background technology

Fireproof cable has special fire protecting performance, when fire takes place, not only self does not burn, and does not propagate and enlarges the condition of a fire, and require in certain hour, can normally send electricity, gives to rescue people's lives and properties and win time enough.Traditional fireproof cable structure is that magnesia mineral powder insulation copper pipe is made sheath; Though can play anti-fire action, exist factory length short, the joint difficulty is big; Many shortcomings such as copper pipe cost height particularly; People have developed ripple copper pipe sheath and have solved the limited problem of factory length in the recent period, but the fireproof cable of this ripple copper pipe sheath ripple copper pipe in the embossing process contacts with the existence of inner cushion layer material firmly, weighs built-in electrical insulation easily wounded.And the refractory ability of this fireproof cable also has certain deficiency.

Summary of the invention

The utility model is exactly to the problems referred to above, provides a kind of flameproof effect good, can prevent the ripple copper pipe oversheath fireproof cable that ripple copper pipe and inner cushion layer material contact firmly.

For reaching the above-mentioned purpose of the utility model, the utility model adopts following technical scheme, and the utility model comprises the insulated wire cores that is made up of high temperature resistant mica tape outside cable conductor, the cable conductor and the outer insulating barrier of high temperature resistant mica tape; Insulated wire cores is outward a bellows, is provided with mineral powder mud between described bellows of its structural feature and the insulated wire cores.

The beneficial effect of the utility model: the utility model is provided with mineral powder mud between the insulating barrier of bellows and cable conductor; Realized soft contact the between bellows and the insulating barrier; Prevent to weigh wounded in the embossing process insulation of cable conductor; Particularly mineral powder mud ability fast ceramicization when running into fire plays the fire compartment wall effect.Obviously improved the fireproofing of cable performance.

Description of drawings

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

Fig. 2 is the structural representation of an embodiment of the utility model.

Fig. 3 is the structural representation of another embodiment of the utility model.

1 is that oversheath, 2 is that bellows, 3 is that glass fiber strap, 4 is that insulated wire cores, 5 is that mineral powder mud, 6 is that fire-resistant gasket for packing, 7 is that insulating barrier, 8 is that high temperature resistant mica tape, 9 is a cable conductor in the accompanying drawing.

Embodiment

The utility model comprises the insulated wire cores 4 that is made up of high temperature resistant mica tape 8 outside cable conductor 9, the cable conductor 9 and high temperature resistant mica tape 8 outer insulating barriers 7; Outside the insulated wire cores 4 is bellows 2, is provided with mineral powder mud 5 between described bellows 2 and the insulated wire cores 4.

Be provided with glass fiber strap 3 between described mineral powder mud 5 and the bellows 2; Winding through glass fiber strap 3 can make mineral powder mud 5 form stable shape, is convenient to the production and the use of cable.

Described mineral powder mud 5 can be seat clay (seat clay can be purchased by market).

Like Fig. 2, shown in Figure 3, described insulated wire cores 4 can be provided with more than two or two.

When insulated wire cores 4 more than or when equaling three, fire-resistant gasket for packing 6 can be set between the insulated wire cores 4.

Outside the described bellows 2 oversheath 1 can be set.

Described insulating barrier 7 is processed by the halogen-free and low-smoke flame-retardant polyolefin material with oversheath 1.

Described fire-resistant gasket for packing 6 is made up of glass fiber and mineral wool rope.

The utility model with the many stranded formation cable conductors 9 of copper wire after, wrapped high temperature resistant mica tape 8 outside cable conductor 9 extrudes the halogen-free and low-smoke flame-retardant polyolefin material again and does insulating barrier 7 and constitute insulated wire cores 4, and plays the colour code effect; Then, be one with many insulated core 4 stranded strandings, and between insulated wire cores 4, add fire-resistant gasket for packing 6, extrude mineral powder mud 5 outside the insulated wire cores 4 after stranding is stranded; Simultaneously, wrapped triplex glass silk strap 3 outside it guarantees that cable has a stable circular state; By the vertical circle that is bundled into of copper plate, after the argon arc welding, continuous rolling becomes corrugated, outside bellows 2, extrudes halogen-free and low-smoke flame-retardant polyolefin oversheath 1, has so just accomplished the manufacture process of the utility model outside.

Three road fireprotection layers are arranged when the utility model runs into fire: the first road fireprotection layer is a bellows 2; Can resist 1000 ℃ and following high temperature; The second road fireprotection layer is a mineral powder mud 5, and mineral powder mud 5 is met fire meeting fast ceramicization, not only high temperature resistant retaining fire; And can lower the temperature, make the cable internal temperature far below the external flame temperature; 3 combinations of mineral powder mud 5 and glass fiber strap have also realized soft contact the between bellows 2 and the insulated wire cores 4, have avoided built-in electrical insulation core 4 to receive crushing because of embossing.The 3rd road fireprotection layer is cable conductor 9 outer wrapped high temperature resistant mica tapes 8.This three roads fireprotection layer can guarantee effectively that cable send electricity more than 3 hours meeting under the fire condition normal safety, gives fire extinguishing and rescues people's lives and properties and won the quality time.

Those of ordinary skill in the art is to be understood that; More than about the specific descriptions of the utility model; Only be used to the utility model is described and and be subject to the described technical scheme of embodiment, still can make amendment or be equal to replacement, to reach identical technique effect the utility model; As long as satisfy the use needs, all should be in the protection range of the utility model.

Claims

1. a ripple copper pipe oversheath fireproof cable comprises the insulated wire cores (4) that is made up of high temperature resistant mica tape (8) outside cable conductor (9), the cable conductor (9) and the outer insulating barrier (7) of high temperature resistant mica tape (8); Insulated wire cores (4) is outer to be bellows (2), it is characterized in that: be provided with mineral powder mud (5) between described bellows (2) and the insulated wire cores (4).

2. a kind of ripple copper pipe oversheath fireproof cable according to claim 1 is characterized in that: be provided with glass fiber strap (3) between described mineral powder mud (5) and the bellows (2).

3. a kind of ripple copper pipe oversheath fireproof cable according to claim 1, it is characterized in that: described mineral powder mud (5) is seat clay.

4. a kind of ripple copper pipe oversheath fireproof cable according to claim 1, it is characterized in that: described insulated wire cores (4) is provided with more than two or two.

5. a kind of ripple copper pipe oversheath fireproof cable according to claim 4 is characterized in that: when insulated wire cores (4) more than or when equaling three, fire-resistant gasket for packing (6) is set between the insulated wire cores (4).

6. a kind of ripple copper pipe oversheath fireproof cable according to claim 1 is characterized in that: the outer oversheath (1) that is provided with of described bellows (2).

7. a kind of ripple copper pipe oversheath fireproof cable according to claim 6, it is characterized in that: described insulating barrier (7) and oversheath (1) are processed by the halogen-free and low-smoke flame-retardant polyolefin material.

8. a kind of ripple copper pipe oversheath fireproof cable according to claim 5, it is characterized in that: described fire-resistant gasket for packing (6) is made up of glass fiber and mineral wool rope.