CN207337964U - A kind of mineral insulation fire-resisting cable - Google Patents
A kind of mineral insulation fire-resisting cable Download PDFInfo
- Publication number
- CN207337964U CN207337964U CN201720716658.1U CN201720716658U CN207337964U CN 207337964 U CN207337964 U CN 207337964U CN 201720716658 U CN201720716658 U CN 201720716658U CN 207337964 U CN207337964 U CN 207337964U
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- China
- Prior art keywords
- layer
- cable core
- cable
- mineral insulation
- fire
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Abstract
The utility model discloses a kind of mineral insulation fire-resisting cable, belong to field of cables.A kind of mineral insulation fire-resisting cable of the utility model, include the cable core of four mutually insulated isolation, cable core is wrapped in the internal shield of conductor layer, inorganic mineral insulation layer, crosslinked polyetylene insulated layer, external shielding layer by conductor layer and successively and forms, glass fiber tape is enclosed with successively outside cable core and tightens layer, Ceramic Composite inhibiting tape, metal embossing sheath, low-smoke halogen-free polyolefin oversheath, and wherein cable core and glass fiber tape, which tighten, is filled with inorganic refractory separation layer in layer.
Description
Technical field
It the utility model is related to a kind of cable, more particularly to a kind of mineral insulation fire-resisting cable.
Background technology
The sheath material of existing fire-resisting cable is mostly polyvinyl chloride, and when cable fire produces toxic gas and dense smoke, very
Easily human body is damaged.In addition, existing fire-resisting cable uses non-environmental protection type packing material and twining package tape, the meeting in flame
Discharge a large amount of smog even toxic gas.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of fire-resisting cable of environment-friendly type, to ensure cable in height
Remain to keep integrality and normal power supply under conditions of warm fire flame, and do not produce poisonous and harmful substance.
In order to solve the above technical problems, technical solution adopted in the utility model is：
A kind of mineral insulation fire-resisting cable, including the cable core of four mutually insulateds isolation, the glass that is wrapped in successively outside cable core
Glass fiber band tightens layer, Ceramic Composite inhibiting tape, metal embossing sheath, low-smoke halogen-free polyolefin oversheath, cable core and glass fibers
Dimension band, which tightens, is filled with fire resisting separation layer in layer, cable core includes conductor layer and insulating layer.
Further, the insulating layer of cable core is divided into inorganic mineral insulation layer and crosslinked polyetylene insulated layer from inside to outside.
Further, internal shield is equipped between the conductor layer of cable core and insulating layer.
Further, the insulating layer of cable core is externally provided with external shielding layer, and external shielding layer is located at the outermost layer of cable core.
It is using beneficial effect caused by above-mentioned technical proposal：
1st, low-smoke halogen-free polyolefin oversheath has been entirely free of halogen (PBDE, PBB and other halogen things in the utility model
Matter) and noxious material, the various toxic chemical contents such as Cr, Cd, Hg, Pb be zero, smoke density is small, and when burning is not likely to produce harmful
Gas and corrosive gas, fire resistance is good, and charing rate is fast during burning, good film-forming property, the charring layer of densification is produced, after lighting
It can reach quick self-extinguishment from fire, avoid the common molten drop phenomenon of general fire proofing.
2nd, in the utility model Ceramic Composite inhibiting tape based on ceramic fireproof silicone rubber and temperature resistant glass fiber cloth
Want Material cladding to form, start to be hardened under 350 DEG C of temperatures above and form the housing of ceramic-like." ceramic " in case of fire
Hard housing can play the role of good fire-retardant, fire resisting, fire prevention, fire insulation, reach as high as 3000 DEG C, effective guarantee circuit
It is unimpeded.
3rd, glass fiber tape tightens layer and uses alkali-free glass fiber cloth, material good insulating, heat resistance in the utility model
By force, corrosion resistance is good, high mechanical strength.
4th, cable core and glass fiber tape tighten and fire resisting separation layer are filled with layer in the utility model, and fire resisting separation layer is by oxygen
Change magnesium and be equipped with adhesive, swelling catalyst, carburization agent, foaming agent composition.After metal oxide layer curing one is formed with whole cable core
A entirety, metal oxide layer play isolation flame, reduce the function of heating temperature inside cable.
5th, internal shield is equipped with the utility model between conductor layer and insulating layer, adds internal shield in conductor layer surface,
Internal shield and conductor layer equipotential, and with insulating layer good contact, so as to avoid the generation office between conductor layer and insulating layer
Discharge in portion.
6th, the insulating layer of cable core is divided into inorganic mineral insulation layer and crosslinked polyetylene insulated from inside to outside in the utility model
Layer, inorganic mineral insulation layer is overlapping wrapped by fire-resistant isinglass belt and silicone band, and the crosslinked polyethylene of netted stereochemical structure has ten
Divide excellent heat resistance, will not decompose and be carbonized below 200 DEG C, Long-term service temperature is up to 90 DEG C, and the thermal life is up to 40
Year；Crosslinked polyethylene maintains the original good insulation characteristics of PE, and insulation resistance further increases；Its dielectric loss angle tangent
It is worth very little, and is affected by temperature less；Due to establishing new chemical bond between macromolecular, the hardness of crosslinked polyethylene, rigidity,
Wearability and impact resistance are improved, so as to compensate for the shortcomings that PE is easily cracked by environmental stress；Crosslinked polyethylene has
Stronger acid and alkali-resistance and oil resistivity, its combustion product are mainly water and carbon dioxide, and the harm to environment is smaller, meets that the modern times disappear
Anti- safe requirement.
7th, external shielding layer is equipped with the utility model, gap is also likely to be present in surface of insulating layer and restrictive coating contact position,
It is the factor for causing shelf depreciation, therefore adds one layer of external shielding layer in surface of insulating layer, external shielding layer has with shielded insulating layer
Good contact, and restrictive coating equipotential, so as to avoid that shelf depreciation occurs between insulating layer and restrictive coating.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of overall structure diagram of mineral insulation fire-resisting cable of the utility model.
Fig. 2 is the structure diagram of cable core in the utility model.
Wherein：1- cable cores, 2- fire resistings separation layer, 3- glass fiber tapes tighten layer, 4- Ceramic Composites inhibiting tape, 5- metals and roll
Line sheath, 6- low-smoke halogen-free polyolefins oversheath, 7- conductor layers, 8- internal shields, 9- inorganic mineral insulations layer, 10- crosslinkings are poly-
Ethene insulating layer, 11- external shielding layers.
Embodiment
With reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu, be fully described by, it is clear that and described embodiment is only the part of the embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained, shall fall within the protection scope of the present invention.
Many details are elaborated in the following description in order to fully understand the utility model, but this practicality is new
Type can also be implemented using other different from other manner described here, and those skilled in the art can be without prejudice to this reality
With doing similar popularization in the case of new intension, therefore the utility model is from the limitation of following public specific embodiment.
Embodiment 1
As shown in Fig. 2, a kind of cable core 1 of mineral insulation fire-resisting cable in the utility model, the conductor layer 7 of cable core 1 is by counting
Root tinned wird is twisted, and conductor layer 7 is externally provided with internal shield 8, and internal shield 8 selects the semiconductive that thickness is 0.2mm
EVA/CPE, internal shield 8 are externally provided with inorganic mineral insulation layer 9 and crosslinked polyetylene insulated layer 10, inorganic mineral insulation layer 9 by
Fire-resistant isinglass belt and silicone band it is overlapping it is wrapped form, wrapped 4 layers of the number of plies, thickness 2mm, crosslinked polyetylene insulated 10 thickness of layer is
2mm, insulating layer are externally provided with insulation screen 11.
Conductor layer 7 is externally provided with internal shield 8 and external shielding layer 11 in the utility model, and the current-carrying capacity and insulation of cable are hit
Wear rate to be all greatly improved, insulating layer is equipped with inorganic mineral insulation layer 9 and crosslinked polyetylene insulated layer 10, can ensure cable
Maintained continuous performance and stability in long term overloading and overheat.
Embodiment 2
As shown in Figure 1, a kind of overall structure diagram of mineral insulation fire-resisting cable of the utility model, including four mutually
The cable core 1 being dielectrically separated from, cable core 1 are enclosed with glass fiber tape and tighten layer 3, Ceramic Composite inhibiting tape 4, metal embossing shield successively outside
Set 5, low-smoke halogen-free polyolefin oversheath 6, wherein cable core 1 and glass fiber tape, which tighten, is filled with inorganic refractory separation layer in layer 3
2。
Fire resisting separation layer 2 is equipped with adhesive, swelling catalyst, carburization agent, foaming agent group by magnesia in the utility model
Into.Metal oxide layer cure after form a whole with whole cable core, metal oxide layer rise isolation flame, reduce cable inside by
The function of hot temperature.Glass fibre tightens layer 3 and uses thickness to be formed for 3 layers of the alkali-free glass fiber cloth winding of 0.2mm, and material is exhausted
Edge is good, heat resistance is strong, corrosion resistance is good, high mechanical strength.Ceramic Composite inhibiting tape 4 is with ceramic fireproof silicone rubber and Nai Gao
Warm glass fabric forms for main Material cladding, starts to be hardened under 350 DEG C of temperatures above and forms the housing of ceramic-like.In fire
" ceramic " hard housing can play the role of good fire-retardant, fire resisting, fire prevention, fire insulation in the case of calamity, reach as high as
3000 DEG C, effective guarantee circuit it is unimpeded.Low-smoke halogen-free polyolefin oversheath 6 be entirely free of halogen (PBDE, PBB and other
Halogen-containing materials) and noxious material, the various toxic chemical contents such as Cr, Cd, Hg, Pb be zero, smoke density is small, and when burning is not easy to produce
Raw pernicious gas and corrosive gas, fire resistance is good, and charing rate is fast during burning, good film-forming property, produces the charring layer of densification,
Quick self-extinguishment can be reached by lighting turning off stove, avoid the common molten drop phenomenon of general fire proofing.
Claims (4)
- A kind of 1. mineral insulation fire-resisting cable, it is characterised in that：Cable core including four mutually insulated isolation, be wrapped in cable successively Glass fiber tape outside core tightens layer, Ceramic Composite inhibiting tape, metal embossing sheath, low-smoke halogen-free polyolefin oversheath, cable core Tightened with glass fiber tape and fire resisting separation layer is filled with layer, cable core includes conductor layer and insulating layer.
- A kind of 2. mineral insulation fire-resisting cable according to claim 1, it is characterised in that：The insulating layer of cable core is from inside to outside It is divided into inorganic mineral insulation layer and crosslinked polyetylene insulated layer.
- A kind of 3. mineral insulation fire-resisting cable according to claim 1, it is characterised in that：The conductor layer and insulating layer of cable core Between be equipped with internal shield.
- A kind of 4. mineral insulation fire-resisting cable according to claim 1, it is characterised in that：The insulating layer of cable core is externally provided with outer Shielded layer, external shielding layer are located at the outermost layer of cable core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720716658.1U CN207337964U (en) | 2017-06-16 | 2017-06-16 | A kind of mineral insulation fire-resisting cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720716658.1U CN207337964U (en) | 2017-06-16 | 2017-06-16 | A kind of mineral insulation fire-resisting cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207337964U true CN207337964U (en) | 2018-05-08 |
Family
ID=62426721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720716658.1U Expired - Fee Related CN207337964U (en) | 2017-06-16 | 2017-06-16 | A kind of mineral insulation fire-resisting cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207337964U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473212A (en) * | 2018-09-26 | 2019-03-15 | 河南长征电气有限公司 | A kind of industrial electrical equipment equipment cable protective sleeve that anti-flammability is high |
| CN110246615A (en) * | 2019-06-21 | 2019-09-17 | 王元忠 | A kind of high-strength impact-resistant fire retardant insulating cable |
-
2017
- 2017-06-16 CN CN201720716658.1U patent/CN207337964U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109473212A (en) * | 2018-09-26 | 2019-03-15 | 河南长征电气有限公司 | A kind of industrial electrical equipment equipment cable protective sleeve that anti-flammability is high |
| CN110246615A (en) * | 2019-06-21 | 2019-09-17 | 王元忠 | A kind of high-strength impact-resistant fire retardant insulating cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180508 Termination date: 20200616 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |