CN109036682A - A kind of insulating refractory low-smoke non-halogen flame-retardant midium voltage cable with air duct - Google Patents
A kind of insulating refractory low-smoke non-halogen flame-retardant midium voltage cable with air duct Download PDFInfo
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- CN109036682A CN109036682A CN201810857031.7A CN201810857031A CN109036682A CN 109036682 A CN109036682 A CN 109036682A CN 201810857031 A CN201810857031 A CN 201810857031A CN 109036682 A CN109036682 A CN 109036682A
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- Prior art keywords
- layer
- retardant
- air duct
- smoke non
- voltage cable
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Insulated Conductors (AREA)
Abstract
The invention discloses a kind of insulating refractory low-smoke non-halogen flame-retardant midium voltage cable with air duct; including conductor, conductor shielding layer, insulating layer, insulation screen, metal screen layer, belting layer, oxygen barrier layer, isolation belting layer, flame retardant coating, protection belting layer and the outer jacket that successively nesting is arranged from the inside to the outside; the periphery of the oxygen barrier layer has extruded a plurality of separate cavities; the separate cavities form air duct longitudinally along the cable; oxygen barrier layer is extruded using LSOH anti-flaming oxygen barrier filling material, and isolation belting layer is formed using the overlapping of low-smoke non-halogen flame-retardant band is wrapped.Midium voltage cable in the application is using the composite coolings insulating refractory design such as air duct heat dissipation, oxygen barrier layer cooling, flame retardant coating fire insulation, heat-insulated, cooling, allow cable in a fire can be with stable operation 90min or more, effective guarantee personnel escape, fire self-rescue and fire fighting.
Description
Technical field
The present invention relates to medium-pressure power cable technical fields, more specifically, in particular to a kind of to be used for skyscraper, people
The insulating refractory low-smoke non-halogen flame-retardant midium voltage cable with air duct of the intensive large-scale public place of mouth.
Background technique
Fire-resisting cable itself belongs to fire-fighting equipment, and the grade of this product is determined according to the property and scale of building
's.It is exactly according to civil buildings design specification, selective oxidation magnesium cable that the main foundation of fire-resisting cable is selected in civil buildings
With organic insulation fire-resisting cable.It is found according to fire department thermometric, flame kernel temperature majority of case when civil buildings
First all between 700 DEG C to 850 DEG C, organic insulation fire-resisting cable can operate normally 90min at these temperatures completely, selection
This fireproof cable has all won valuable time to saving oneself in personnel escape, fire fighting and building.Medium voltage electricity electricity
Cable is because of structure and uses characteristic, and the mineral insulation of magnesia, mica tape class cannot be used as low voltage product, can only be used
Organic insulation, the fire resisting of midium voltage cable must just make an issue of outside insulated wire cores, the middle pressure fire resistant flame retardant cable of domestic market from
Ceramic silicon rubber is used to start as flame retardant coating, but Ceramic silicon rubber needs to extrude production using rubber extruding machine, it is then high
Temperature vulcanization, there is certain requirement to equipment, insulated wire cores expanded by heating in sulfidation, at insulation shielding and metallic shield
It produces and combines closely, produce apparent copper strips on insulation shielding surface after core is cooling and strangle trace, it is serious also to will cause absolutely
The deformation of edge core affects longtime running stability and the service life of cable to a certain extent.
Summary of the invention
It is an object of the invention to solve in the prior art, thus provide it is a kind of be suitable for skyscraper,
The middle pressure fireproof power cable of the people intensive civil buildings fire-fighting system such as subway, market.This cable is logical using air
The composite coolings insulating refractory design such as road heat dissipation, oxygen barrier layer cooling, flame retardant coating fire insulation, heat-insulated, cooling, allows cable in a fire may be used
With stable operation 90min or more, effective guarantee personnel escape, fire self-rescue and fire fighting.
In order to achieve the above object, The technical solution adopted by the invention is as follows:
A kind of insulating refractory low-smoke non-halogen flame-retardant midium voltage cable with air duct, including successively nested setting from the inside to the outside
Conductor, conductor shielding layer, insulating layer, insulation screen, metal screen layer, belting layer, oxygen barrier layer, isolation belting layer, flame retardant coating,
Protection belting layer and outer jacket, the periphery of the oxygen barrier layer have extruded a plurality of separate cavities, and the separate cavities are along cable length side
To air duct is formed, oxygen barrier layer is extruded using halogen-free flameproof oxygen barrier filling material, and isolation belting layer uses halogen-free flameproof band weight
Lap wound packet forms.
Further, the separate cavities are gear type, and the separate cavities are extruded by gear type mold in oxygen barrier layer appearance
It makes.
Further, the conductor is pressed by being twisted after oxygen-free copper bar or aluminium bar or aluminium alloy rod wire drawing.
Further, the conductor shield, insulating layer and insulation screen squeeze out insulated wire in three-layer co-extruded mode
Core.
Further, the conductor shield is to be extruded to be crosslinked by cross-linking type semiconductive inner shield material.
Further, the insulating layer is extruded using cross-linked type polyethylene Insulation Material and is crosslinked.
Further, the insulation screen is extruded using semiconductive external shield material and is crosslinked.
Further, the metal screen layer is dredged using the wrapped or annealed copper silk of annealed copper band overlapping around forming.
Further, the overlapping of halogen-free flameproof band is wrapped to be formed belting layer with protecting belting layer to be all made of, and outer jacket uses nothing
Halogen flame-retardant sheath material extrudes.
Further, the flame retardant coating is extruded using ceramic polyolefin.
The present invention has the following beneficial effects: oxygen barrier layer uses special press molds, rule is formed in oxygen barrier layer surface
The separate cavities (cross section is gear-like) of dispersion form air reservoir after wrapped band, and are formed along cable length side
Upward air duct layer.After catching fire at cable one, heat on cable core direction and length direction from spreading at ignition point, in cable
On core direction, the presence of air layer reduces the transmission speed of heat, and in the longitudinal direction, heat is diffused into along air duct
From the farther place of ignition point, reduce the total amount of heat transmitted in the unit time to insulated wire cores.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the insulating refractory low-smoke non-halogen flame-retardant midium voltage cable with air duct of the invention；
Fig. 2 is the structural schematic diagram of oxygen barrier layer in the present invention.
Specific embodiment
The preferred embodiment of the present invention is described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Refering to fig. 1 and shown in Fig. 2, the present invention provides to press in a kind of insulating refractory low-smoke non-halogen flame-retardant with air duct
Cable, including successively conductor 1, the conductor shield 2, insulating layer 3, insulation screen 4, metallic shield of nested setting from the inside to the outside
Layer 5, belting layer 6, oxygen barrier layer 7, isolation belting layer 8, flame retardant coating 9, protection belting layer 10 and outer jacket 11, the outer circle of oxygen barrier layer 7
Face has extruded a plurality of separate cavities 71, and preferred separate cavities 71 are gear type, and separate cavities 71 by gear type mold outside oxygen barrier layer 7
Gauge pressure extrudes, and separate cavities 71 form air duct longitudinally along the cable, and oxygen barrier layer 7 is filled using low smoke and zero halogen oxygen barrier layer
Material, using press molds, separate cavities 71 are extruded simultaneously；Isolation belting layer 8 is formed using the overlapping of low-smoke non-halogen flame-retardant band is wrapped,
It is not required to independent process production, it is wrapped simultaneously in production flame retardant coating 9, it is not take up production hour.Conductor 1 is by oxygen-free copper bar or aluminium
It is twisted and presses after bar or aluminium alloy rod wire drawing.Conductor shield 2, insulating layer 3 and insulation screen 4 are with three-layer co-extruded side
Formula squeezes out the insulated wire cores of an entirety.Conductor shield 2 is to be extruded to be crosslinked by cross-linking type semiconductive inner shield material.Insulation
Layer 3 is extruded using cross-linked type polyethylene Insulation Material and is crosslinked.Insulation screen 4 using semiconductive external shield material extrude crosslinking and
At.Metal screen layer 5 is dredged using the wrapped or high-purity annealed copper silk of general high-purity annealed copper band overlapping around forming.Band
Layer 6 is formed using the overlapping of low-smoke non-halogen flame-retardant band is wrapped, is not required to independent process production, wrapped simultaneously i.e. in production metal screen layer
Can, it is not take up production hour, protection belting layer 10 is formed using the overlapping of low-smoke non-halogen flame-retardant band is wrapped, and it is raw to be not required to independent process
It produces, it is wrapped simultaneously in production outer jacket, it is not take up production hour, outer jacket 11 is extruded using low-smoke halogen-free flame-retardant sheath material
It forms.Flame retardant coating using meet fire or high temperature can crust cooling and insulating ceramic polyolefin extruded using common extruding machine and
At.Wherein, halogen-free low-smoke flame retardant material is the common used material of cable in the prior art.
Cable production method in the application are as follows:
Twisted copper core or aluminium core or aluminium alloy core are pressed as conductor 1, three-layer co-extruded conductor shield 2+ using circle
XLPE insulating layer 3+ insulation screen 4 is used as insulated wire cores, and soft copper band or soft copper silk are as metal screen layer 5, after metallic shield
Wrapped low-smoke non-halogen flame-retardant band forms belting layer 6, and insulated wire cores are scalded when avoiding extruding oxygen barrier layer 7 and copper strips heat absorption makes fastly
Extruded stock cooling is serious to generate disconnection etc., then gear type oxygen barrier layer 7 is extruded using the mold of special designing, in 7 table of oxygen barrier layer
The wrapped low-smoke non-halogen flame-retardant band in face forms isolation belting layer 8, and separate cavities 71 form closed air duct, protect oxygen barrier layer not
It can be collapsed when extruding flame retardant coating 9, flame retardant coating 9 is extruded using ceramic polyolefin outside isolation belting layer 8, flame retardant coating 9 is wrapped outside
For low-smoke non-halogen flame-retardant band as protection belting layer 10,1300 DEG C of one side high temperature resistant or more of low-smoke non-halogen flame-retardant band is well
Fire resisting, isolation flame material completely cut off direct impact of the flame to ceramic polyolefin as first of fire insulation defence line；Other one
Aspect, when ceramic polyolefin ceramic, can expand, and using low-smoke non-halogen flame-retardant band, can help its sizing, avoid because
The weak sections such as crack are unevenly generated for regional temperature；Low-smoke non-halogen flame-retardant oversheath material conduct is extruded outside protection belting layer 10
Outer jacket 11.
The present invention has the following beneficial effects:
(1) a kind of insulating refractory low-smoke non-halogen flame-retardant midium voltage cable with air duct of the present invention, oxygen barrier layer are squeezed using special
Molding jig forms the separate cavities (cross section is gear-like) of rule dispersion in oxygen barrier layer surface, forms air after wrapped band
Memory space, and form the air duct layer on longitudinally along the cable.After catching fire at cable one, heat from ignition point to cable
It is spread on core direction and length direction, on cable core direction, the presence of air layer reduces the transmission speed of heat, in length side
Upwards, heat is diffused into along air duct from the farther place of ignition point, is reduced in the unit time and is transmitted to insulated wire cores
Total amount of heat.
(2) a kind of insulating refractory low-smoke non-halogen flame-retardant midium voltage cable flame retardant coating with air duct of the present invention uses thermoplastic
Property ceramic polyolefine material, replace Ceramic silicon rubber, using common extruding machine squeeze out, insulated wire cores will not be caused to damage
Wound；General extruding machine can produce, and do not need to vulcanize, reduce production cost.
(3) a kind of insulating refractory low-smoke non-halogen flame-retardant midium voltage cable with air duct of the present invention, is cooled down using multilayer
Insulating refractory design allows cable in a fire can be with stable operation 90min or more, effective guarantee personnel escape, fire self-rescue
And fire fighting.
(4) a kind of insulating refractory low-smoke non-halogen flame-retardant midium voltage cable with air duct of the present invention, oxygen barrier layer, flame retardant coating
Halogen-free low-smoke flame retardant material is selected with outer sheath material, the toxic smog of damage personnel's respiratory system will not be generated in fire,
The effective guarantee safety of personnel.
Although the embodiments of the invention are described in conjunction with the attached drawings, but patent owner can be in appended claims
Within the scope of make various deformations or amendments, as long as it does not exceed the scope of protection described in the claims to the invention, all should
Within protection scope of the present invention.
Claims (10)
1. a kind of insulating refractory low-smoke non-halogen flame-retardant midium voltage cable with air duct, it is characterised in that: including from the inside to the outside
The successively conductor, conductor shielding layer of nested setting, insulating layer, insulation screen, metal screen layer, belting layer, oxygen barrier layer, isolation
Belting layer, flame retardant coating, protection belting layer and outer jacket, the periphery of the oxygen barrier layer have extruded a plurality of separate cavities, the isolation
Chamber forms air duct longitudinally along the cable, and oxygen barrier layer is extruded using halogen-free flameproof oxygen barrier filling material, and isolation belting layer is adopted
It is formed with the overlapping of halogen-free flameproof band is wrapped.
2. the insulating refractory low-smoke non-halogen flame-retardant midium voltage cable according to claim 1 with air duct, feature exist
In: the separate cavities are gear type, and the separate cavities are made by gear type mold in the extrusion of oxygen barrier layer appearance.
3. the insulating refractory low-smoke non-halogen flame-retardant midium voltage cable according to claim 2 with air duct, feature exist
It is twisted and presses after: the conductor is by oxygen-free copper bar or aluminium bar or aluminium alloy rod wire drawing.
4. the insulating refractory low-smoke non-halogen flame-retardant midium voltage cable according to claim 2 with air duct, feature exist
In: the conductor shield, insulating layer and insulation screen squeeze out insulated wire cores in three-layer co-extruded mode.
5. the insulating refractory low-smoke non-halogen flame-retardant midium voltage cable according to claim 4 with air duct, feature exist
In: the conductor shield is to be extruded to be crosslinked by cross-linking type semiconductive inner shield material.
6. the insulating refractory low-smoke non-halogen flame-retardant midium voltage cable according to claim 4 with air duct, feature exist
In: the insulating layer is extruded using cross-linked type polyethylene Insulation Material and is crosslinked.
7. the insulating refractory low-smoke non-halogen flame-retardant midium voltage cable according to claim 4 with air duct, feature exist
In: the insulation screen is extruded using semiconductive external shield material and is crosslinked.
8. the insulating refractory low-smoke non-halogen flame-retardant midium voltage cable according to claim 2 with air duct, feature exist
In: the metal screen layer using the overlapping of annealed copper band is wrapped or annealed copper silk is dredged around forming.
9. the insulating refractory low-smoke non-halogen flame-retardant midium voltage cable according to claim 2 with air duct, feature exist
In: the overlapping of halogen-free flameproof band is wrapped to be formed belting layer with protecting belting layer to be all made of, and outer jacket is squeezed using Halogen-free flame retardant sheath material
It makes.
10. the insulating refractory low-smoke non-halogen flame-retardant midium voltage cable according to claim 2 with air duct, feature exist
In: the flame retardant coating is extruded using ceramic polyolefin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810857031.7A CN109036682B (en) | 2018-07-31 | 2018-07-31 | Heat-insulating fire-resistant low-smoke halogen-free flame-retardant medium-voltage cable with air channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810857031.7A CN109036682B (en) | 2018-07-31 | 2018-07-31 | Heat-insulating fire-resistant low-smoke halogen-free flame-retardant medium-voltage cable with air channel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109036682A true CN109036682A (en) | 2018-12-18 |
| CN109036682B CN109036682B (en) | 2023-08-01 |
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| CN201810857031.7A Active CN109036682B (en) | 2018-07-31 | 2018-07-31 | Heat-insulating fire-resistant low-smoke halogen-free flame-retardant medium-voltage cable with air channel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112117034A (en) * | 2020-09-21 | 2020-12-22 | 昆明昆宝电线电缆制造有限公司 | High anti-interference type computer cable |
| CN113488270A (en) * | 2021-06-30 | 2021-10-08 | 重庆泰山电缆有限公司 | High-current-carrying medium-voltage fire-resistant cable |
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| JPH0689614A (en) * | 1991-11-12 | 1994-03-29 | Nitsukan Kogyo Kk | Heat radiation insulator tube and covered wire |
| US20040216914A1 (en) * | 2003-03-10 | 2004-11-04 | Nordx/Cdt, Inc. | Communications cable |
| EP1956404A1 (en) * | 2007-02-08 | 2008-08-13 | Nexans | Slotted core with improved fire properties for a cable use |
| CN102820089A (en) * | 2011-06-10 | 2012-12-12 | 江苏上上电缆集团有限公司 | Medium voltage fire resisting cable |
| CN205862822U (en) * | 2016-08-03 | 2017-01-04 | 上海矿用电缆厂有限公司 | Mine cable with air duct |
| CN205881558U (en) * | 2016-07-28 | 2017-01-11 | 江苏长峰电缆有限公司 | Shock -resistant resistant spraying does not have steamed low fire -retardant middling pressure fire resisting cable of cigarette |
| CN208385063U (en) * | 2018-07-31 | 2019-01-15 | 特变电工山东鲁能泰山电缆有限公司 | A kind of insulating refractory low-smoke non-halogen flame-retardant midium voltage cable with air duct |
-
2018
- 2018-07-31 CN CN201810857031.7A patent/CN109036682B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0689614A (en) * | 1991-11-12 | 1994-03-29 | Nitsukan Kogyo Kk | Heat radiation insulator tube and covered wire |
| US20040216914A1 (en) * | 2003-03-10 | 2004-11-04 | Nordx/Cdt, Inc. | Communications cable |
| EP1956404A1 (en) * | 2007-02-08 | 2008-08-13 | Nexans | Slotted core with improved fire properties for a cable use |
| CN102820089A (en) * | 2011-06-10 | 2012-12-12 | 江苏上上电缆集团有限公司 | Medium voltage fire resisting cable |
| CN205881558U (en) * | 2016-07-28 | 2017-01-11 | 江苏长峰电缆有限公司 | Shock -resistant resistant spraying does not have steamed low fire -retardant middling pressure fire resisting cable of cigarette |
| CN205862822U (en) * | 2016-08-03 | 2017-01-04 | 上海矿用电缆厂有限公司 | Mine cable with air duct |
| CN208385063U (en) * | 2018-07-31 | 2019-01-15 | 特变电工山东鲁能泰山电缆有限公司 | A kind of insulating refractory low-smoke non-halogen flame-retardant midium voltage cable with air duct |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112117034A (en) * | 2020-09-21 | 2020-12-22 | 昆明昆宝电线电缆制造有限公司 | High anti-interference type computer cable |
| CN113488270A (en) * | 2021-06-30 | 2021-10-08 | 重庆泰山电缆有限公司 | High-current-carrying medium-voltage fire-resistant cable |
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| Publication number | Publication date |
|---|---|
| CN109036682B (en) | 2023-08-01 |
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