CN116646119A - Low smoke fireproof power cable - Google Patents
Low smoke fireproof power cable Download PDFInfo
- Publication number
- CN116646119A CN116646119A CN202310556738.5A CN202310556738A CN116646119A CN 116646119 A CN116646119 A CN 116646119A CN 202310556738 A CN202310556738 A CN 202310556738A CN 116646119 A CN116646119 A CN 116646119A
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- CN
- China
- Prior art keywords
- sliding
- flame
- fire
- retardant
- quick
- Prior art date
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- Pending
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- 239000000779 smoke Substances 0.000 title claims abstract description 28
- 239000003063 flame retardant Substances 0.000 claims abstract description 54
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000002485 combustion reaction Methods 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 16
- 230000001681 protective effect Effects 0.000 claims abstract description 14
- 239000004744 fabric Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 6
- 229920000098 polyolefin Polymers 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims 5
- 238000007599 discharging Methods 0.000 claims 2
- 230000009970 fire resistant effect Effects 0.000 claims 2
- 230000000979 retarding effect Effects 0.000 claims 2
- 229910052736 halogen Inorganic materials 0.000 claims 1
- 150000002367 halogens Chemical class 0.000 claims 1
- 238000001746 injection moulding Methods 0.000 claims 1
- 230000002265 prevention Effects 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 abstract description 15
- 239000010410 layer Substances 0.000 description 23
- 239000002131 composite material Substances 0.000 description 19
- 239000007789 gas Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000007790 scraping Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 239000012796 inorganic flame retardant Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 1
- RJDOZRNNYVAULJ-UHFFFAOYSA-L [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] RJDOZRNNYVAULJ-UHFFFAOYSA-L 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- UKACHOXRXFQJFN-UHFFFAOYSA-N heptafluoropropane Chemical compound FC(F)C(F)(F)C(F)(F)F UKACHOXRXFQJFN-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
-
- 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
- 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
-
- 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 relates to the technical field of cables, in particular to a low-smoke fireproof power cable, which comprises an outer sheath, wherein a plurality of fire extinguishing parts are arranged on the outer sheath, each fire extinguishing part comprises a heat dissipation opening which is arranged on the outer layer of the outer sheath at an equal angle, quick-combustion clamping plates are clamped at the heat dissipation openings, annular sliding grooves communicated with the heat dissipation openings are arranged in the outer sheath, a plurality of sliding blocks which are matched with the quick-combustion clamping plates one by one are arranged in the sliding grooves at equal angles, two adjacent sliding blocks are connected through elastic parts, the quick-combustion clamping plates are connected with the matched sliding blocks through limiting telescopic protective sleeves, an elastic spring is arranged in each limiting telescopic protective sleeve, a movable rod is arranged at one side of the end part of each limiting telescopic protective sleeve, which is connected with the quick-combustion clamping plates, a flame-retardant cavity is arranged in each sliding block, a pushing plate is connected in each flame-retardant cavity in a sliding manner, flame-retardant powder filled in each flame-retardant cavity is arranged below each pushing plate, a movable hole and a powder outlet hole communicated with each flame-retardant cavity are arranged on each sliding block, and each movable rod penetrates through each movable hole to be connected with each pushing plate. The invention is convenient for flame retardation after the cable is burnt.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a low-smoke fireproof power cable.
Background
With the rapid development of power cable buried laying engineering, the requirements on the protection performance such as fire resistance and the like of the electric wires and cables are also higher and higher.
If 2022, 8 and 12 days disclose a fireproof type power control composite cable with a publication number of CN217181885U, which is named as a fireproof type power control composite cable, the fireproof type power control composite cable comprises a composite cable outer sheath, N control cables and M power cables, wherein the composite cable outer sheath comprises a composite cable wrapping tape layer, a composite cable metal sheath layer is wrapped outside the composite cable wrapping tape layer, a composite cable metal isolation sleeve layer is wrapped outside the composite cable metal sheath layer, a composite cable fire-proof mud layer is wrapped outside the composite cable metal isolation sleeve layer, and a composite cable outer sheath layer is wrapped outside the composite cable fire-proof mud layer, so that the reliable power transmission performance and the fireproof property of the composite cable are ensured; however, the applicant found that the composite cable outer sheath of the composite cable does not have a fire extinguishing function when burnt.
Disclosure of Invention
In view of the above, the present invention aims to provide a low smoke fireproof power cable to solve the problem that the cable does not have fire extinguishing function.
Based on the above object, the invention provides a low-smoke fireproof power cable, which comprises an outer sheath, wherein a plurality of fire extinguishing pieces are arranged on the outer sheath at equal intervals along the axial direction, each fire extinguishing piece comprises an outer heat dissipation opening arranged at equal angles, quick-combustion clamping plates are clamped at the heat dissipation openings, annular sliding grooves communicated with the heat dissipation openings are arranged in the outer sheath, arc-shaped traction holes are communicated with the sliding grooves, a plurality of sliding blocks matched with the quick-combustion clamping plates one by one are arranged at equal angles in the sliding grooves, one sliding block is fixedly connected with the bottoms of the arc-shaped traction holes through elastic ropes, two adjacent sliding blocks are connected through elastic pieces, the quick-combustion clamping plates are matched with the sliding blocks and are connected through limiting telescopic protective sleeves, the limiting telescopic protective sleeves are only telescopic along the axial direction, elastic springs are arranged in the limiting telescopic protective sleeves, two ends of each elastic spring are respectively connected with two ends of each limiting telescopic protective sleeve, one side of each sliding block is connected with a movable rod, one side of each end of each quick-combustion clamping plate is provided with a movable push plate, each movable rod is connected with one of the corresponding sliding plate, and the movable push plate is provided with a flame-retardant powder cavity.
Optionally, one of the elastic members is connected with the slider through a quick-burning block.
Optionally, the elastic piece is connected with a heat dissipation scraping blade located in the chute.
Optionally, the elastic rope passes through the chute, and the length of the elastic rope passing through the chute is at least half the circumference of the chute.
Optionally, the air vent that has seted up on the slider lateral wall with fire-retardant chamber intercommunication, the air vent with be provided with the screen cloth between the fire-retardant chamber, sliding connection has the piston in the air vent, the piston pass through the connecting rod with the elastic component is connected.
Optionally, the cable further comprises an insulating wire core and a cable core, wherein the insulating wire core sequentially comprises a conductor, an insulating layer and an inner fireproof layer from inside to outside, a low smoke filling material layer is filled between every two adjacent insulating wire cores, a plurality of insulating wire cores are twisted into the cable core, the cable core sequentially comprises a high flame retardant wrapping belt and an inner sheath, and the outer sheath is arranged outside the inner sheath.
Optionally, the outer equiangle of inner sheath is provided with a plurality of sliding tray rather than axial parallel arrangement, equidistant a plurality of fire-retardant pieces that are provided with in the sliding tray, fire-retardant piece include with sliding tray sliding connection's sliding block, the sliding block with outer sheath inlayer sliding connection, sliding block one end pass through connecting spring with the sliding tray inside wall is connected, the sliding block other end pass through quick burning cloth with the sliding tray inside wall is connected, be provided with the arc fan board on the sliding tray, set up on the outer sheath with the air vent of sliding tray intercommunication.
Optionally, the discharge hole has been seted up to sliding tray one side, sliding connection has with the sliding belt that the sliding block is connected in the discharge hole, equidistant a plurality of fire-retardant pieces that are provided with on the sliding belt.
Optionally, the gasbag draw-in groove has been seted up to sliding tray one side, fixedly connected with fills gas bag in the gasbag draw-in groove, it is provided with sealing door to fill gas bag's gas outlet, sealing door pass through the pull wire with the sliding block is connected.
Optionally, the insulating layer is made of a flame-retardant low-smoke halogen-free polyolefin insulating material.
The invention has the beneficial effects that: according to the low-smoke fireproof power cable provided by the invention, when the cable is burnt, the quick-burning clamping plate on the cable is burnt first, the elastic part releases elastic potential energy to drive the limiting telescopic protective sleeve to shrink, the movable rod moves downwards, the push plate moves downwards in the flame-retardant cavity, flame-retardant powder flies into the chute through the powder outlet hole, the cable is conveniently flame-retardant, and the cable has a fire-extinguishing function when being burnt.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A;
FIG. 4 is a schematic view of a slider according to an embodiment of the present invention;
FIG. 5 is a schematic view of the structure of the connection of the outer sheath and the inner sheath according to the embodiment of the present invention;
fig. 6 is an enlarged schematic view of the structure at B in fig. 5.
In the figure: 1. an outer sheath; 2. an inner sheath; 3. a fire extinguishing member; 4. a heat radiation port; 5. a quick-burning clamping plate; 6. a chute; 7. an arc-shaped traction hole; 8. a slide block; 9. an elastic rope; 10. an elastic member; 11. limiting the telescopic protective sleeve; 12. an elastic spring; 13. a moving rod; 14. a flame retardant cavity; 15. a push plate; 16. a moving hole; 17. a powder outlet hole; 18. a conductor; 19. an insulating layer; 20. an inner fire-blocking layer; 21. an insulated wire core; 22. a cable core; 23. a traction wire; 24. a sliding groove; 25. a fire retardant member; 26. a sliding block; 27. a connecting spring; 28. quick burning cloth; 29. a vent hole; 30. an air bag clamping groove; 31. an inflatable airbag; 32. sealing the door.
Detailed Description
The present invention will be further described in detail below with reference to specific embodiments and with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent.
It should be noted that unless otherwise defined, technical or scientific terms used in the embodiments of the present invention should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, a low smoke fireproof power cable comprises an outer sheath 1, a plurality of fire extinguishing members 3 are arranged on the outer sheath 1 along the axial direction at equal intervals, each fire extinguishing member 3 comprises an equal angle, a heat dissipation opening 4 arranged on the outer layer of the outer sheath 1, a quick-combustion clamping plate 5 is clamped at the heat dissipation opening 4, an annular sliding groove 6 communicated with the heat dissipation opening 4 is arranged in the outer sheath 1, arc-shaped traction holes 7 are communicated with the sliding groove 6, a plurality of sliding blocks 8 which are matched with the quick-combustion clamping plate 5 one by one are arranged in the sliding groove 6, one sliding block 8 is fixedly connected with the bottoms of the arc-shaped traction holes 7 through elastic ropes 9, two adjacent sliding blocks 8 are connected through elastic members 10, the elastic members 10 can limit springs, the quick-combustion clamping plate 5 is matched with the sliding blocks 8, the quick-combustion clamping plates 11 are connected through limiting telescopic protective sleeves 11 only along the axial direction, the limiting telescopic protective sleeves 11 are provided with elastic push plates 12 which are arranged in the limiting protective sleeves 11, the sliding blocks 12 are connected with the sliding blocks 14, and the sliding blocks are connected with the sliding blocks 14, and the two ends of the sliding blocks are connected with the sliding blocks 14 through the sliding blocks 15, and the sliding blocks are respectively provided with flame retardant powder 13, and the sliding blocks are connected with two ends 15, and the sliding blocks are respectively, and the sliding blocks are connected with one through one side 13, and 13 is respectively, and 13 are connected with two flame-proof protection sleeves and 13.
When the cable is burnt, the quick-combustion clamping plate 5 on the cable is burnt first, the elastic part 10 releases elastic potential energy, the limiting telescopic protective sleeve 11 is driven to shrink, the movable rod 13 moves downwards, the push plate 15 moves downwards in the flame-retardant cavity 14, flame-retardant powder flies into the chute 6 through the powder outlet hole 17, and flame retardance is conveniently carried out on the cable.
One of the elastic pieces 10 is connected with the sliding block 8 through a quick burning block, and the quick burning block is burnt to disconnect the elastic piece 10 from the sliding block 8, so that the moving speed of the sliding block 8 is accelerated, and the instant fire extinguishing efficiency is improved.
The elastic piece 10 is connected with a heat dissipation scraping blade positioned in the sliding groove 6, the heat dissipation scraping blade is a heat dissipation aluminum sheet, and in the moving process of the sliding block 8, the heat dissipation scraping blade is driven to slide in the sliding groove 6, so that the flame retardant powder in the air of the sliding groove 6 is accelerated to fly.
The elastic rope 9 passes through the sliding groove 6, the length of the elastic rope 9 passing through the sliding groove 6 is at least half the circumference of the sliding groove 6, and the sliding length of the sliding block 8 in the sliding groove 6 is increased.
The air vent 29 communicated with the flame-retardant cavity 14 is formed in the side wall of the sliding block 8, a screen is arranged between the air vent 29 and the flame-retardant cavity 14, a piston is connected in the air vent 29 in a sliding mode, the piston is connected with the elastic piece 10 through a connecting rod, when the sliding block 8 slides in the sliding groove 6, the distance between two adjacent sliding blocks 8 can be adjusted due to the elastic piece 10, the connecting rod and the piston move left and right in the air vent 29, flame-retardant powder in the flame-retardant cavity 14 flies out through the powder outlet hole 17, and flame retardance is accelerated.
The cable further comprises an insulating wire core 21 and a cable core 22, wherein the insulating wire core 21 sequentially comprises a conductor 18, an insulating layer 19 and an inner fireproof layer 20 from inside to outside, a low smoke filling material layer is filled between two adjacent insulating wire cores 21, the plurality of insulating wire cores 21 are twisted into the cable core 22, the cable core 22 sequentially comprises a high flame retardant wrapping tape and an inner sheath 2, and the outer sheath 1 is arranged outside the inner sheath 2.
The inner sheath 2 is provided with a plurality of sliding grooves 24 which are axially parallel to the inner sheath, a plurality of fire-retarding pieces 25 are arranged in the sliding grooves 24 at equal intervals, the fire-retarding pieces 25 comprise sliding blocks 26 which are slidably connected with the sliding grooves 24, the sliding blocks 26 are slidably connected with the inner layer of the outer sheath 1, one ends of the sliding blocks 26 are connected with the inner side walls of the sliding grooves 24 through connecting springs 27, the other ends of the sliding blocks 26 are connected with the inner side walls of the sliding grooves 24 through quick burning cloth 28, arc-shaped fan plates are arranged on the sliding blocks 26, vent holes 29 which are communicated with the sliding grooves 24 are formed in the outer sheath 1, after the quick burning cloth 28 is burnt, the connecting springs 27 drive the sliding blocks 26 to slide in the sliding grooves 24, the sliding blocks 26 move to drive air circulation in the sliding grooves 24, heat dissipation is accelerated, interaction between air in a cable and air outside the cable is accelerated through the vent holes 29, and the temperature of the cable is reduced.
The quick-burning clamping plate 5 and the quick-burning cloth 28 are made of quick-burning cotton products.
The discharge hole has been seted up to slide groove 24 one side, sliding connection has with the sliding band that sliding block 26 is connected in the discharge hole, equidistant a plurality of fire-retardant pieces of being provided with on the sliding band, after quick burning cloth 28 is burnt, the sliding block 26 removes and drives the sliding band and drag out the discharge hole, and fire-retardant piece is convenient for reduce cable combustion efficiency.
An air bag clamping groove 30 is formed in one side of the sliding groove 24, an air bag 31 is fixedly connected in the air bag clamping groove 30, a sealing door 32 is arranged at an air outlet of the air bag 31, the sealing door 32 is connected with the sliding block 26 through a traction wire 23, after the quick-combustion cloth 28 is combusted, the sliding block 26 moves to drive the sliding belt to drag out of a discharge hole, and the flame-retardant block is convenient for reducing the combustion efficiency of the cable.
The inflatable bladder 31 is filled with a fire suppressing gas.
The fire suppressing gas may be heptafluoropropane, carbon dioxide, nitrogen, etc.
The insulating layer 19 is made of a flame-retardant low-smoke halogen-free polyolefin insulating material with an extrusion oxygen index of 33-35.
The inner fire-blocking layer 20 is made of a single-sided or double-sided synthetic mica tape.
The material of the low-smoke filling material layer is low-smoke halogen-free flame-retardant polyolefin oxygen-isolation particles, and the low-smoke halogen-free flame-retardant filling rope.
The conductor 18 is a solid or stranded annealed copper conductor 18.
The high-flame-retardant composite wrapping tape adopts halogen-free high-flame-retardant tape materials.
The outer protective layer is made of halogen-free low-smoke polyolefin material.
The flame retardant powder and the flame retardant block are made of inorganic flame retardants.
The inorganic flame retardant comprises magnesium hydroxide flame retardant, inorganic composite flame retardant, halogen-free environment-friendly flame retardant, nitrogen-phosphorus intumescent flame retardant, antimony trioxide flame retardant, zinc borate flame retardant, aluminum hydroxide flame retardant and the like.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the invention is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the invention, the steps may be implemented in any order and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The embodiments of the invention are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a low smoke fire prevention power cable, includes oversheath (1), its characterized in that, extend equidistant a plurality of fire extinguishing piece (3) that are provided with in axial direction on oversheath (1), fire extinguishing piece (3) are including equiangular setting outer thermovent (4) of oversheath (1), thermovent (4) department joint has quick fire cardboard (5), be provided with in oversheath (1) with annular spout (6) of thermovent (4) intercommunication, spout (6) intercommunication has arc traction hole (7), equidistant a plurality of with quick fire cardboard (5) slider (8) of matching one by one are provided with in spout (6), one of them slider (8) pass through elastic cord (9) with arc traction hole (7) bottom fixed connection, connect through elastic component (10) between two adjacent slider (8), quick fire cardboard (5) and its matching are connected through restriction expansion and retraction lag (11), restriction lag (11) are provided with in the axial direction only flexible lag (11) and the both ends of expansion and retraction lag (12) are equipped with respectively in the flexible lag (11), the quick-combustion type powder injection molding machine is characterized in that a movable rod (13) is arranged on one side of the end part of the quick-combustion type clamping plate (5) and connected with the limiting telescopic protective sleeve (11), a flame-retardant cavity (14) is arranged in the sliding block (8), a push plate (15) is connected in the flame-retardant cavity (14) in a sliding mode, flame-retardant powder filled in the flame-retardant cavity (14) is arranged below the push plate (15), a movable hole (16) and a powder outlet hole (17) are formed in the sliding block (8) and communicated with the flame-retardant cavity (14), and the movable rod (13) penetrates through the movable hole (16) and is connected with the push plate (15).
2. A low smoke, fire-resistant power cable according to claim 1, characterized in that one of the elastic elements (10) is connected to the slider (8) by means of a flash-fire block.
3. A low smoke and fire protection power cable according to claim 1, characterised in that the elastic element (10) is connected with a heat-dissipating wiper blade located in the chute (6).
4. A low smoke and fire protection power cable according to claim 1, characterized in that the elastic cord (9) is arranged through the chute (6), the length of the elastic cord (9) through the chute (6) being at least half the circumference of the chute (6).
5. A low smoke and fire protection power cable according to claim 1, characterized in that the side wall of the slider (8) is provided with a vent hole (29) which is communicated with the fire-retardant cavity (14), a screen is arranged between the vent hole (29) and the fire-retardant cavity (14), a piston is connected in a sliding way in the vent hole (29), and the piston is connected with the elastic piece (10) through a connecting rod.
6. The low-smoke fireproof power cable according to claim 1, further comprising an insulation wire core (21) and a cable core (22), wherein the insulation wire core (21) sequentially comprises a conductor (18), an insulation layer (19) and an inner fireproof layer (20) from inside to outside, a low-smoke filling material layer is filled between two adjacent insulation wire cores (21), the plurality of insulation wire cores (21) are twisted into the cable core (22), the cable core (22) sequentially comprises a high-flame-retardant wrapping tape and an inner sheath (2) from outside, and the outer sheath (1) is arranged outside the inner sheath (2).
7. The low-smoke fireproof power cable according to claim 6, wherein a plurality of sliding grooves (24) which are axially parallel to the outer layer of the inner sheath (2) are formed in the same angle, a plurality of fire retarding pieces (25) are arranged in the sliding grooves (24) at equal intervals, the fire retarding pieces (25) comprise sliding blocks (26) which are slidably connected with the sliding grooves (24), the sliding blocks (26) are slidably connected with the inner layer of the outer sheath (1), one end of each sliding block (26) is connected with the inner side wall of the sliding groove (24) through a connecting spring (27), the other end of each sliding block (26) is connected with the inner side wall of the sliding groove (24) through a quick burning cloth (28), an arc-shaped fan plate is arranged on each sliding block (26), and vent holes (29) which are communicated with the sliding grooves (24) are formed in the outer sheath (1).
8. The low-smoke fireproof power cable according to claim 1, wherein a discharging hole is formed in one side of the sliding groove (24), a sliding belt connected with the sliding block (26) is connected in a sliding mode in the discharging hole, and a plurality of flame retardant blocks are arranged on the sliding belt at equal intervals.
9. The low-smoke fireproof power cable according to claim 1, wherein an airbag clamping groove (30) is formed in one side of the sliding groove (24), an inflatable airbag (31) is fixedly connected in the airbag clamping groove (30), a sealing door (32) is arranged at an air outlet of the inflatable airbag (31), and the sealing door (32) is connected with the sliding block (26) through a traction wire (23).
10. A low smoke, fire-resistant power cable according to claim 6, characterised in that the insulating layer (19) is made of a flame-retardant low smoke, halogen free polyolefin insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310556738.5A CN116646119A (en) | 2023-05-17 | 2023-05-17 | Low smoke fireproof power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310556738.5A CN116646119A (en) | 2023-05-17 | 2023-05-17 | Low smoke fireproof power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116646119A true CN116646119A (en) | 2023-08-25 |
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ID=87618064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310556738.5A Pending CN116646119A (en) | 2023-05-17 | 2023-05-17 | Low smoke fireproof power cable |
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| Country | Link |
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| CN (1) | CN116646119A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117116543A (en) * | 2023-09-11 | 2023-11-24 | 河南华东电缆股份有限公司 | High-flexibility ceramic polyolefin high-flame-retardance fireproof cable |
-
2023
- 2023-05-17 CN CN202310556738.5A patent/CN116646119A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117116543A (en) * | 2023-09-11 | 2023-11-24 | 河南华东电缆股份有限公司 | High-flexibility ceramic polyolefin high-flame-retardance fireproof cable |
| CN117116543B (en) * | 2023-09-11 | 2024-01-26 | 河南华东电缆股份有限公司 | High-flexibility ceramic polyolefin high-flame-retardance fireproof cable |
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