CN108053938A - A kind of high flame retardant fireproof power cable - Google Patents
A kind of high flame retardant fireproof power cable Download PDFInfo
- Publication number
- CN108053938A CN108053938A CN201711270880.4A CN201711270880A CN108053938A CN 108053938 A CN108053938 A CN 108053938A CN 201711270880 A CN201711270880 A CN 201711270880A CN 108053938 A CN108053938 A CN 108053938A
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- Prior art keywords
- core
- layer
- insulating layer
- groove
- cable
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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.)
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Classifications
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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
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0216—Two layers
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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
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
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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
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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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
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/006—Constructional features relating to the conductors
-
- 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
- H01B9/024—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of braided metal wire
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- 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
Landscapes
- Insulated Conductors (AREA)
Abstract
The invention discloses a kind of high flame retardant fireproof power cables, belong to power cable technical field, and its purpose is to provide a kind of high flame retardant fireproof power cables, improve the efficiency that protective layer is put in multiply core peripheral hardware.The cable includes cable core, and cable core is wrapped with protective layer, and the first filled layer is filled between cable core and protective layer；Per share core includes multigroup core, and the cross section of the core is regular hexagon, and multigroup core is wrapped with insulating layer, and the second filled layer is filled between core and insulating layer；The first groove, bulge loop are equipped on the external cylindrical surface of the insulating layer of per share core, during adjacent two strands core connection, the first groove on the insulating layer of one core is mutually spliced to form groove structure with the bulge loop on the insulating layer of another strand core, and annular umbellate form elastic component is equipped in groove structure；The second groove on the insulating layer of one core is correspondingly formed space with the 3rd groove on the insulating layer of another strand core, and annular resilient part is equipped in space.
Description
Technical field
The invention belongs to power cable technical fields, and in particular to a kind of high flame retardant fireproof power cable.
Background technology
With the rapid development of Chinese national economy and the continuous improvement of living standards of the people, accelerate city specific use
The requirement of power grid construction is increasingly urgent.And communication cable use occasion is complicated, cable performance is required especially stringent.Cable
There are good machinery, physical property and various mechanical stresses can be born, and electrical property does not deteriorate in the presence of a harsh environment, from
And ensure to work stably in a long term.And existing cable generally existing shield effectiveness is poor, transmission speed is low, poor anti jamming capability etc. lacks
Point, the cable that particularly environment uses outdoors are difficult to fit for the variation such as environment such as high temperature, humidity of various external environments
Situations such as answering, causing cable bad happens occasionally.
A kind of waterproof and dampproof aluminium alloy cable of the disclosure of the invention of Application No. CN201520792505.6, including core and
Circular array is arranged in the aluminium alloy conductor outside the core, exhausted equipped with environmental protection in the aluminium alloy conductor outer cover
Edge protective layer is provided with heat-insulating layer outside the environmentally friendly insulating protective layer, in the heat-insulating layer outer cover
Equipped with copper mesh, in the copper mesh outer cover equipped with inner insulation layer, uniform intervals are set outside the inner insulation layer
There is bulge-structure, bamboo-carbon layer is provided between the bulge-structure, it is exhausted equipped with outer layer in the bulge-structure outer cover
Edge layer.The present invention, when outer insulation is damaged, realizes the effect for being absorbed into internal moisture by using bamboo-carbon layer
Fruit, meanwhile, using bulge-structure, moisture can be facilitated to be flowed along cable extending direction, so as to which moisture be facilitated to discharge, while profit
The isolation again to moisture is realized with inner insulation layer, enhances dampproof effect.
Although the invention has certain practical function on waterproof and dampproof, it is between core and aluminium alloy conductor
Position relationship be difficult to limit, when the heat-insulating layer wherein filled not enough or because some external environments change and lack
It when few, can make a big impact to its structure, while the stability of cable conduction causes huge harm.In addition, the core of cable
Typically made of multiply core, and protective layer is arranged again outside multiply core.In the prior art, outside due to each core
Portion is mostly smooth cylindrical surface, thus multiply core is external be arranged protective layer when, can be mutually shifted between core, core it
Between distance changing at any time, so as to multiply core for set protective layer when just seem particularly problematic, work efficiency is told somebody what one's real intentions are.
The content of the invention
It is an object of the invention to：In order to solve the core when multiply core peripheral hardware puts protective layer, arbitrarily movement causes to set
The technical issues of protective layer is very troublesome, provides a kind of high flame retardant fireproof power cable, improves and put guarantor in multiply core peripheral hardware
The efficiency of sheath.
The technical solution adopted by the present invention is as follows：
A kind of high flame retardant fireproof power cable, including the cable core being made of multiply core, cable core is wrapped with guarantor
Sheath is filled with the first filled layer between cable core and protective layer；Per share core include multigroup core, the core it is transversal
Face is regular hexagon, and multigroup core is wrapped with insulating layer, and the second filled layer is filled between core and insulating layer；Outside insulating layer
It is enclosed with polyolefin layer；The first groove, bulge loop are equipped on the external cylindrical surface of the insulating layer of per share core, adjacent two strands core connects
When connecing, the first groove on the insulating layer of one core is mutually spliced to form groove knot with the bulge loop on the insulating layer of another strand core
Structure, and annular umbellate form elastic component is installed in groove structure；The second groove and another strand on the insulating layer of one core
The 3rd groove on the insulating layer of core is correspondingly formed space, and annular resilient part is equipped in space；Heat dissipation is offered on protective layer
Hole, heat emission hole include the outer polyurethane for being connected to interior polyurethane fire-resistant waterproof layer on the inside of protective layer, being connected on the outside of protective layer
Fire-resistant waterproof layer is connected with spring rope between interior polyurethane fire-resistant waterproof layer and outer polyurethane flame-proof waterproof layer.
Wherein, protective layer is included by the interior shielded layer set gradually outward, lapping layer, metal protection layer and outer jacket, screen
Layer is covered by tin-coated copper tow and high-density fiber yarn Shu Zucheng, and lapping layer is made of the compound twining package tape of Ceramic silicon rubber, metal
Protective layer is woven by filament line, and outer jacket is the outer jacket of rat-and-ant proof.
Wherein, the shape of the longitudinal section of the annular umbellate form elastic component include by the interior cuboid set gradually outward, etc.
Waist is trapezoidal, and close to the one side of cuboid, the length on the base of isosceles trapezoid is more than the width of cuboid at the base angle of isosceles trapezoid, and
The base angle of isosceles trapezoid is clamped respectively in the card slot of the insulating layer of both sides core.
Wherein, formed after the insulating layer of adjacent two strands core and annular umbellate form elastic component, the installation of annular resilient part between first
Gap, the second gap, third space.
Wherein, the first groove is arranged at the outside of the insulating layer radial direction of one core A, and the insulating layer of strand core A is radially
Inside be provided with bulge loop；Bulge loop on the insulating layer of another strand core B is arranged at the outer of the insulating layer radial direction of strand core B
Side, and the bulge loop of the strand core B radial outsides is adapted with the first groove of the insulating layer radial outside of core A, strand core B
The first groove is offered on the inside of radial direction, the first groove of the strand core B radially inner sides and the insulating layer radially inner side of core A
Bulge loop is adapted.
In the present invention, the cross section of per share core is disposed as regular hexagon, thus compared to using cross section as circle
Core, more cores can be arranged in the insulating layer of identical size, so as to fulfill the more signals of simultaneous transmission；It is adjacent
It is attached by special structure between the insulating layer of two strand cores, multigroup core links into an integrated entity knot so as to realize
Structure, can be quickly and easily more so as to can effectively avoid the random movement of core when multiply core peripheral hardware puts protective layer
Protective layer is set outside strand core, improves the manufacture efficiency of cable；The insulating layer of adjacent two strands core passes through bulge loop, groove, ring-type
Umbellate form elastic component, annular resilient part are attached, and the connective stability after connection is preferable, are repeated dismounting and are used.Every
Polyolefin layer is enclosed with again outside insulating layer outside group core, by the polyolefin layer core can effectively be blocked to carry out oxygen with external
Connection, so as to which either external protective layer catches fire or one any core catches fire, the intensity of a fire will not all be developed by protective layer into
Core or developed by one core into another strand core, polyolefin layer can form a not molten non-ignitable housing, exhausted to completely cut off
Contact of the edge organic matter with outside air, finally makes cable achieve the purpose that self-extinguishment, so as to substantially increase the fire-retardant etc. of cable
Grade, reaches A grades of flame retardant levels.Include being compiled by the interior polyethylene filling and vulcanization insulating layer set gradually outward, copper wire in protective layer
Knit shielded layer, aluminium halogen-free and low-smoke flame-retardant polyolefin bonds protective layer, the polyethylene of polyethylene filling and vulcanization insulating layer and cable is exhausted
Edge layer mutually vulcanizes fusion, and the structure of cable is made to reduce the presence of impurity and the air gap as far as possible, while also can be compared with
Good reaches the electric property being close with crosslinked cable body, and highest is pressure-resistant to can reach 35Kv or so；Aluminium in protective layer without
Halogen low-smoke flame-proof polyolefin bond protective layer be mainly halogen-free using halogen-free and low-smoke flame-retardant polyolefin material and other lead, cadmium,
The characteristic of the heavy metals such as chromium, mercury, even if burned will not occur toxic smog such as hydrogen halides, also non-corrosive gas release,
Generated smog is also seldom.Offer heat emission hole on the protection layer, set in heat emission hole in polyurethane fire-resistant waterproof layer with it is outer
Polyurethane flame-proof waterproof layer avoids extraneous steam intrusion cable and damages.
Description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the close-up schematic view of Fig. 1；
Fig. 3 is close-up schematic views of the Fig. 1 at heat emission hole；
Fig. 4 is structure diagram when one core will be caught in another strand core in the present invention；
Structure diagram when Fig. 5 is adjacent two strands core clamping in the present invention；
Fig. 6 is the schematic diagrames of Fig. 4 in another embodiment；
Fig. 7 is the schematic diagrames of Fig. 5 in another embodiment；
It is marked in figure：The second grooves of 1-, 2- third spaces, 3- ring-type umbellate forms elastic component, 4- annular resilients part, 5- card slots,
6- groove structures, 7- bulge loops, the second gaps of 8-, the 3rd grooves of 9-, 10- spaces, 11- cores, the second filled layers of 12-, 13- insulation
Layer, the outer polyurethane flame-proof waterproof layer of the first filled layers of 14-, 15- protective layers, 16- polyolefin layers, 17- heat emission holes, 18-, 19- bullets
Polyurethane fire-resistant waterproof layer in spring rope, 20-.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
Embodiment 1
A kind of high flame retardant fireproof power cable, cable inside include the cable core being made of multiply core, cable core
Be wrapped with protective layer, filled with the first filled layer between cable core and protective layer, by protective layer to the core of its inside into
Row protection.Per share core includes multigroup core and the insulating layer being wrapped in outside multigroup core, and the cross section of the core is
Regular hexagon, some side fitting between two adjacent groups core, so as to which multigroup core can be distributed around one group of core.It is multigroup
Core is wrapped with insulating layer, filled with the second filled layer between core and insulating layer, by insulating layer can multigroup core it
Between interfere.It is, of course, also possible to be respectively provided with a layer insulating outside every group of core, pass through the insulating layer on core and this group of line
It is separated between remaining core of in-core, the transmission of signal or electric energy is not interfere with each other.Insulating layer is wrapped with polyolefin layer, leads to
Crossing the polyolefin layer can effectively block core to be connected with outside progress oxygen, so as to which either external protective layer catches fire or appoints
What one core catches fire, and the intensity of a fire will not all be developed into core by protective layer or be developed by one core into another strand core, gathers
Olefin layer can form a not molten non-ignitable housing, with contact of the isolation insulation organic matter with outside air, finally reach cable
To the purpose of self-extinguishment, so as to substantially increase the flame retardant rating of cable, reach A grades of flame retardant levels.Heat dissipation is offered on protective layer
Hole, heat emission hole include the outer polyurethane for being connected to interior polyurethane fire-resistant waterproof layer on the inside of protective layer, being connected on the outside of protective layer
Fire-resistant waterproof layer is connected with spring rope between interior polyurethane fire-resistant waterproof layer and outer polyurethane flame-proof waterproof layer.It opens on the protection layer
Polyurethane fire-resistant waterproof layer and outer polyurethane flame-proof waterproof layer, avoid extraneous water in being set equipped with heat emission hole, in heat emission hole
Vapour intrusion cable damages.
The first groove, bulge loop are equipped on the external cylindrical surface of the insulating layer of per share core, when adjacent two strands core connects, one
The first groove on the insulating layer of strand core and the bulge loop on the insulating layer of another strand core are mutually spliced to form groove structure, and
Annular umbellate form elastic component is installed in groove structure；The insulation of the second groove and another strand core on the insulating layer of one core
The 3rd groove on layer is correspondingly formed space, and annular resilient part is equipped in space.
During splicing, the bulge loop on the insulating layer of one core is clamped the first groove on the insulating layer of another strand core
It is interior, then being stably connected with for adjacent two strands core is realized under the action of annular umbellate form elastic component, annular resilient part.
Embodiment 2
On the basis of embodiment one, protective layer include by the interior polyethylene filling and vulcanization insulating layer set gradually outward,
Proof copper-wire braided shielded layer, aluminium halogen-free and low-smoke flame-retardant polyolefin bond protective layer, and aluminium halogen-free and low-smoke flame-retardant polyolefin bonds protective layer
It is main to be halogen-free using halogen-free and low-smoke flame-retardant polyolefin material and the characteristic of the heavy metals such as other lead, cadmium, chromium, mercury, even if by
Toxic smog such as hydrogen halides will not occur for burning, and also non-corrosive gas release, generated smog are also seldom.
Embodiment 3
On the basis of embodiment one or embodiment two, the shape of the longitudinal section of annular umbellate form elastic component include by it is interior outward
The cuboid that sets gradually, isosceles trapezoid, the base angle of isosceles trapezoid is close to the one side of cuboid, the length on the base of isosceles trapezoid
More than the width of cuboid, and the base angle of isosceles trapezoid is clamped respectively in the card slot of the insulating layer of both sides core.
Embodiment 4
On the basis of above-described embodiment, the insulating layer of adjacent two strands core and annular umbellate form elastic component, annular resilient part
The first gap, the second gap, third space are formed after installation.
Embodiment 5
On the basis of above-described embodiment, the first groove is arranged at the outside of the insulating layer radial direction of one core A, the strand
Bulge loop is provided on the inside of the insulating layer radial direction of core A；Bulge loop on the insulating layer of another strand core B is arranged at strand core B's
The outside of insulating layer radial direction, and the first groove phase of the bulge loop of the strand core B radial outsides and the insulating layer radial outside of core A
Adaptation offers the first groove on the inside of the strand core B radial directions, and the first groove of the strand core B radially inner sides is exhausted with core A's
The bulge loop of edge layer radially inner side is adapted.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of high flame retardant fireproof power cable, including the cable core being made of multiply core, cable core is wrapped with protection
Layer (15) is filled with the first filled layer (14) between cable core and protective layer (15)；It is characterized in that：Per share core includes more
Group core (11), the cross section of the core (11) is regular hexagon, and multigroup core (11) is wrapped with insulating layer (13), core
(11) the second filled layer (12) is filled between insulating layer (13)；Insulating layer (13) is wrapped with polyolefin layer (16)；It is per share
The first groove, bulge loop (7) are equipped on the external cylindrical surface of the insulating layer (13) of core, when adjacent two strands core connects, a strand
The first groove on the insulating layer (13) of core is mutually spliced to form groove knot with the bulge loop (7) on the insulating layer (13) of another strand core
Structure (6), and annular umbellate form elastic component (3) is installed in groove structure (6)；Second on the insulating layer (13) of one core is recessed
Slot (1) is correspondingly formed space (10) with the 3rd groove (9) on the insulating layer (13) of another strand core, is equipped in space (10)
Annular resilient part (4)；Heat emission hole (17) is offered on protective layer (15), heat emission hole (17) includes being connected on the inside of protective layer (15)
Interior polyurethane fire-resistant waterproof layer (20), the outer polyurethane flame-proof waterproof layer (18) that is connected on the outside of protective layer (15), cohesion ammonia
Spring rope (19) is connected between ester fire-resistant waterproof layer (20) and outer polyurethane flame-proof waterproof layer (18).
2. a kind of high flame retardant fireproof power cable as described in claim 1, it is characterised in that：Protective layer (15) is included by interior
Shielded layer, lapping layer, metal protection layer and the outer jacket set gradually outward, shielded layer is by tin-coated copper tow and high-density fiber
Yarn Shu Zucheng, lapping layer are made of the compound twining package tape of Ceramic silicon rubber, and metal protection layer is woven by filament line, outside
Sheath is the outer jacket of rat-and-ant proof.
3. a kind of high flame retardant fireproof power cable as described in claim 1, it is characterised in that：The ring-type umbellate form elastic component
(3) shape of longitudinal section is included by the interior cuboid set gradually outward, isosceles trapezoid, and the base angle of isosceles trapezoid is close to rectangular
The one side of body, the length on the base of isosceles trapezoid is more than the width of cuboid, and the base angle of isosceles trapezoid is clamped respectively into both sides
In the card slot (5) of the insulating layer (13) of core.
4. a kind of high flame retardant fireproof power cable as described in claim 1, it is characterised in that：The insulation of adjacent two strands core
It is formed after layer (13) and annular umbellate form elastic component (3), annular resilient part (4) installation between the first gap, the second gap (8), the 3rd
Gap (2).
5. a kind of high flame retardant fireproof power cable as described in claim 1, it is characterised in that：First groove is arranged at one
The outside of insulating layer (13) radial direction of core A is provided with bulge loop (7) on the inside of insulating layer (13) radial direction of strand core A；It is another
Bulge loop (7) on the insulating layer (13) of strand core B is arranged at the outside of insulating layer (13) radial direction of strand core B, and the strand
The bulge loop (7) of core B radial outsides is adapted with first groove of insulating layer (13) radial outside of core A, and strand core B is radially
Inside offer the first groove, the first groove of the strand core B radially inner sides and insulating layer (13) radially inner side of core A
Bulge loop (7) is adapted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711270880.4A CN108053938A (en) | 2017-12-05 | 2017-12-05 | A kind of high flame retardant fireproof power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711270880.4A CN108053938A (en) | 2017-12-05 | 2017-12-05 | A kind of high flame retardant fireproof power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108053938A true CN108053938A (en) | 2018-05-18 |
Family
ID=62122262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711270880.4A Pending CN108053938A (en) | 2017-12-05 | 2017-12-05 | A kind of high flame retardant fireproof power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108053938A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110136880A (en) * | 2019-06-20 | 2019-08-16 | 夏纪成 | Compound cable |
| CN111584126A (en) * | 2020-05-21 | 2020-08-25 | 哈尔滨交联电力电缆制造有限公司 | Crosslinked polyethylene insulated polyvinyl chloride sheath power cable |
-
2017
- 2017-12-05 CN CN201711270880.4A patent/CN108053938A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110136880A (en) * | 2019-06-20 | 2019-08-16 | 夏纪成 | Compound cable |
| CN111584126A (en) * | 2020-05-21 | 2020-08-25 | 哈尔滨交联电力电缆制造有限公司 | Crosslinked polyethylene insulated polyvinyl chloride sheath power cable |
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Application publication date: 20180518 |