CN202422824U - Fireproof low-voltage cable - Google Patents
Fireproof low-voltage cable Download PDFInfo
- Publication number
- CN202422824U CN202422824U CN2012200485827U CN201220048582U CN202422824U CN 202422824 U CN202422824 U CN 202422824U CN 2012200485827 U CN2012200485827 U CN 2012200485827U CN 201220048582 U CN201220048582 U CN 201220048582U CN 202422824 U CN202422824 U CN 202422824U
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- CN
- China
- Prior art keywords
- low
- voltage cable
- cable
- insulated wire
- wire cores
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a fireproof low-voltage cable, relating to improvement of a fireproof low-voltage cable structure; the fireproof low-voltage cable is provided by the utility model, wherein fireproof effect is good, production is not limited by a length; a middle joint is needless; a terminal joint is same as a normal low-voltage plasticity cable; mounting is processed conveniently; cost is low. The fireproof low-voltage cable comprises an insulating line core composed of a cable conductor, a high-temperature-resist mica belt outside the cable conductor and an insulating layer outside the high-temperature-resist mica belt; the exterior of the insulating line core is an outer protection sleeve; according to the key point of a structure, mineral powder mud is arranged between the outer protection sleeve and the insulating line core.
Description
Technical field
The utility model relates to a kind of improvement of the low-voltage cable structure of preventing fires.
Background technology
At present; Construction market is the building of main public place particularly; Increasingly high to fire protection requirement; The lv power cable that requirement has fire protecting performance not only self does not burn, does not propagate and enlarges the condition of a fire, and requires under flame, water pouring and shock conditions, normally to send electricity, wins the quality time for fire extinguishing and rescue people lives and properties.Traditional fireproof cable generally adopts mineral insulation (magnesia) and copper pipe sheath, though have certain fire protecting performance, has a lot of problems, and these problems mainly are that factory length is short; Need transition joint and terminal fitting when installing and using, particularly real core conductor causes cable hard, is difficult to crooked and straight; The joint difficulty is big, and cable end makes moist easily, and insulation resistance is reduced; Amount of copper consuming is big, and cost is high, has had a strong impact on using and promoting of fireproof cable.
Summary of the invention
The utility model is exactly to the problems referred to above, provides a kind of flameproof effect good, produces and does not receive length restriction, need not transition joint, and terminal fitting is identical, easy for installation with common low compression moulding power cable, the fire prevention low-voltage cable that cost is low.
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 an oversheath, is provided with mineral powder mud between described oversheath of its structural feature and the insulated wire cores.
The beneficial effect of the utility model: the utility model is mineral powder mud fast ceramicization when meeting fire, forms hard housing, plays the fiery cooling effect of retaining; Play the second road fire line effect behind the outer high temperature resistant mica tape of wrapped multilayer of cable conductor, so the utility model flameproof effect is good.
The utility model has been realized a cable multicore, saves the copper sheath of existing fireproof cable, can not need transition joint by the delivery of customer requirements produced in lengths, and terminal fitting is identical, easy for installation with common low compression moulding power cable, and cost is low, has higher using value.
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, 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 oversheath 1, is provided with mineral powder mud 5 between described oversheath 1 of its structural feature and the insulated wire cores 4.
Be provided with glass fiber strap 3 between described mineral powder mud 5 and the oversheath 1; 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.
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 cable conductor 9 of the utility model adopts the many wrapped high temperature resistant mica tapes 8 in the stranded back of copper wires, and then extrudes the halogen-free and low-smoke flame-retardant polyolefin material and do insulating barrier 7 and constitute insulated wire cores 4, and plays the colour code effect; When many insulated core 4 was stranded, the fire-resistant gasket for packing 6 that cable center adds glass fiber and mineral wool rope composition tamped; Extrude mineral powder mud 5 outside the insulated wire cores 4 behind stranding and do oxygen barrier fire prevention inner sheath.Extruding mineral powder mud 5 wrapped glass fiber strap 3 simultaneously, guarantee the circular state that cable is stable.Extrude the halogen-free and low-smoke flame-retardant polyolefin material at last and do oversheath 1.
The fire prevention principle of the utility model is: mineral powder mud 5 fast ceramicization at high temperature when cable meets with fire; Form cellular solid retaining fire; Water, shock, the cooling duricrust makes the cable internal temperature far below external temperature; With each insulated wire cores 4 location, making it keeps at a distance does not each other contact this duricrust mutually with the fire-resistant gasket for packing 6 of cable center; Simultaneously, the utility model is not afraid of external water pouring and vibrations, still sustainable sending; Win the quality time for fire extinguishing and rescue people lives and properties.
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 (7)
1. a fire prevention low-voltage 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 oversheath (1), it is characterized in that: be provided with mineral powder mud (5) between described oversheath (1) and the insulated wire cores (4).
2. a kind of fire prevention low-voltage cable according to claim 1 is characterized in that: be provided with glass fiber strap (3) between described mineral powder mud (5) and the oversheath (1).
3. a kind of fire prevention low-voltage cable according to claim 2 is characterized in that: described mineral powder mud (5) is seat clay.
4. a kind of fire prevention low-voltage cable according to claim 1 is characterized in that: described insulated wire cores (4) is set to more than two or two.
5. a kind of fire prevention low-voltage 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 fire prevention low-voltage cable according to claim 1 is characterized in that: described insulating barrier (7) and oversheath (1) are processed by the halogen-free and low-smoke flame-retardant polyolefin material.
7. a kind of fire prevention low-voltage cable according to claim 5 is characterized in that: described fire-resistant gasket for packing (6) is made up of glass fiber and mineral wool rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200485827U CN202422824U (en) | 2012-02-16 | 2012-02-16 | Fireproof low-voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200485827U CN202422824U (en) | 2012-02-16 | 2012-02-16 | Fireproof low-voltage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202422824U true CN202422824U (en) | 2012-09-05 |
Family
ID=46747560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200485827U Expired - Lifetime CN202422824U (en) | 2012-02-16 | 2012-02-16 | Fireproof low-voltage cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202422824U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103106966A (en) * | 2013-03-04 | 2013-05-15 | 无锡市沪安电线电缆有限公司 | Soft high-fire-resistance cable |
| CN105655011A (en) * | 2016-04-01 | 2016-06-08 | 江苏江扬电缆有限公司 | Flexible mineral insulated cable and production method thereof |
| CN107545947A (en) * | 2017-05-18 | 2018-01-05 | 无锡市新阳光电缆有限公司 | A kind of low-pressure fireproof cable |
| CN109300586A (en) * | 2018-10-26 | 2019-02-01 | 长沙恒飞电缆有限公司 | Intrinsic safety type fireproof cable and preparation method thereof and preparation facilities |
-
2012
- 2012-02-16 CN CN2012200485827U patent/CN202422824U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103106966A (en) * | 2013-03-04 | 2013-05-15 | 无锡市沪安电线电缆有限公司 | Soft high-fire-resistance cable |
| CN105655011A (en) * | 2016-04-01 | 2016-06-08 | 江苏江扬电缆有限公司 | Flexible mineral insulated cable and production method thereof |
| CN107545947A (en) * | 2017-05-18 | 2018-01-05 | 无锡市新阳光电缆有限公司 | A kind of low-pressure fireproof cable |
| CN109300586A (en) * | 2018-10-26 | 2019-02-01 | 长沙恒飞电缆有限公司 | Intrinsic safety type fireproof cable and preparation method thereof and preparation facilities |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |