CN110047620B - Composite fireproof cable - Google Patents
Composite fireproof cable Download PDFInfo
- Publication number
- CN110047620B CN110047620B CN201910429885.XA CN201910429885A CN110047620B CN 110047620 B CN110047620 B CN 110047620B CN 201910429885 A CN201910429885 A CN 201910429885A CN 110047620 B CN110047620 B CN 110047620B
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- China
- Prior art keywords
- cable
- tegument
- layer
- heat conducting
- connecting piece
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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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- 239000002131 composite material Substances 0.000 title claims abstract description 15
- 238000009434 installation Methods 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 51
- 239000000725 suspension Substances 0.000 claims description 24
- 230000037431 insertion Effects 0.000 claims description 15
- 238000003780 insertion Methods 0.000 claims description 15
- 239000003292 glue Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 230000009970 fire resistant effect Effects 0.000 claims 7
- 239000011247 coating layer Substances 0.000 claims 2
- 238000001746 injection moulding Methods 0.000 claims 1
- 230000005484 gravity Effects 0.000 description 6
- 239000004020 conductor Substances 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 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 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H01B7/40—Insulated conductors or cables characterised by their form with arrangements for facilitating mounting or securing
Landscapes
- Electric Cable Installation (AREA)
- Installation Of Indoor Wiring (AREA)
Abstract
The invention discloses a composite fireproof cable which comprises a cable main body formed by splicing more than one assembly cable and more than one connecting piece, wherein the cable main body is hung on the top for installation, each assembly cable comprises a first outer tegument and a second outer tegument, the first outer tegument and the second outer tegument are spliced into a circular cable outer tegument, the end surfaces of the two sides of the first outer tegument and the second outer tegument are rotatably connected with the connecting piece through a rotating structure, and a through hole is formed in the middle of the connecting piece. The cable provided by the invention has very good protection performance as long as being applied to a high position, can realize automatic falling after resisting the burning of the flame cup and then replace a new outer tegument layer to continuously protect the cable core wire at the top, and prevents flame from being transmitted to the cable core wire end.
Description
Technical Field
The invention relates to a cable, in particular to a composite fireproof cable.
Background
Cables are used in many places, and therefore, those cables exposed to the outside are easily burnt out in case of fire or a fire source due to the fact that the cables are not fireproof, resulting in economic loss. The existing cable is only treated by a fireproof interlayer or coated with fireproof paint, although the modes can prevent fire at a time and protect an inner core wire, after a long time, a fireproof layer is carbonized and burnt through, and the inner core wire still suffers from flame erosion.
Disclosure of Invention
The invention aims to solve the technical problem of providing a composite fireproof cable, which can realize the automatic falling of the tegument after being eroded by flame for a period of time, can quickly supplement the tegument on the other side, wins more time for fire extinguishment, is usually used for a suspended cable and solves the problem of protection of a fire source at the bottom of the cable.
The invention is realized by the following technical scheme: a composite fireproof cable comprises more than one assembled cable and a cable main body formed by splicing more than one connecting piece, wherein the cable main body is hung on the top, each assembled cable comprises a first outer tegument and a second outer tegument, the first outer tegument and the second outer tegument are spliced into a circular cable outer tegument, the end faces of the two sides of the first outer tegument and the second outer tegument are rotatably connected with the connecting piece through a rotating structure, a through hole is formed in the middle of the connecting piece, a cable installation cavity is formed in the middle of the cable outer tegument, cable core wires are arranged in the cable installation cavity and penetrate through the through holes of the connecting pieces, the cable cores are supported by the connecting pieces, the opposite faces of the first outer tegument and the second outer tegument are respectively provided with a convex heat-conducting piece, more than one hanging piece with thermal fusing capability is inserted into the heat-conducting, the first outer covering layer and the second outer covering layer are internally provided with a fireproof layer, and the heat conducting piece is partially inserted into the fireproof layer.
According to a preferable technical scheme, the heat conducting piece comprises more than one heat conducting rod and a cross rod, the more than one heat conducting rod is welded and fixed on the cross rod, the more than one heat conducting rod is injected into a cable outer tegument and is inserted into the fireproof layer, the cross rod protrudes out of the inner wall surface of the cable outer tegument, a fixing hole is formed in the cross rod which faces each heat conducting rod, the fixing hole extends towards the heat conducting rod, a hanging piece part is inserted into the fixing hole and fixed through glue, and the outer wall surface of the hanging piece is in contact with the inner wall of the fixing hole.
As a preferred technical scheme, the rotating structure comprises balls embedded in the end faces of the first outer layer and the second outer layer, the balls partially protrude out of the outer end faces of the first outer layer and the second outer layer, a circle of annular groove is formed in a connecting piece facing the balls, the protruding portion of the balls extends into the annular groove, and the first outer layer and the second outer layer roll in the annular groove through the balls.
Preferably, the connecting piece is circular, the outer diameter of the connecting piece is the same as the outer layer of the cable, and the outer end of the annular groove is open, so that the ball can slide out from the outer open end of the annular groove.
As the preferred technical scheme, the cable core wires are fixedly connected with the inner wall of the through hole by glue, and the whole cable core wire is in a straightening state.
The suspension member comprises a suspension line and a suspension ring, the suspension ring is provided with a central hole in the middle, the centers of the central holes between adjacent suspension members are positioned on the same axis, and one end of the suspension line is inserted into the fixing hole of the heat-conducting member and fixed by glue.
As a preferable technical scheme, the suspension lines and the suspension ropes are made of PVC materials or rubber with shaping capacity.
As a preferable technical scheme, the fireproof layer is made of fireproof heat-insulating cotton.
As an optimized technical scheme, more than one positioning insertion rod is convexly arranged on the same side of the splicing surface of the first outer layer, a positioning insertion hole is formed in the second outer layer opposite to the positioning insertion rod, and the positioning insertion rods are in interference fit with the positioning insertion holes.
As a preferable technical scheme, a counterweight metal strip is embedded in the middle of the outer circular surfaces of the first outer layer and the second outer layer, the second outer layer is located at the bottom of the first outer layer, and the weight of the counterweight metal strip of the second outer layer is greater than that of the counterweight metal strip of the first outer layer.
The invention has the beneficial effects that: the invention adopts a mode of alternately selecting two sides, realizes automatic falling after the bottom is burnt by flame, takes away part of fire source, simultaneously, the other half tegument layer at the top can be turned to the bottom through gravity, realizes the supplement after the tegument layer at the bottom falls off, and then continuously resists the burning of the flame at the bottom, thereby gaining more time for fire extinguishing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a single assembled cable of the present invention;
FIG. 3 is a side exploded view of the assembled cable of the present invention;
FIG. 4 is a schematic structural view of a heat conduction rod according to the present invention;
FIG. 5 is a schematic view of the construction of the connector of the present invention;
fig. 6 is a partially enlarged view of a portion a in fig. 2.
Detailed Description
As shown in fig. 1 and 2, the composite fireproof cable comprises a cable main body formed by splicing more than one assembly cable and more than one connecting piece 1, wherein the cable main body is hung on the top, each assembly cable comprises a first outer layer 2 and a second outer layer 23, and the first outer layer 2 and the second outer layer 23 are spliced into a circular cable outer layer;
all rotate through a revolution mechanic between the both sides terminal surface of first outer tegument 2 and second outer tegument 23 and the connecting piece 1 and be connected, a through-hole 101 is all seted up to the centre of connecting piece 1, form a cable installation cavity in the middle of the cable outer tegument, cable conductor 4 sets up in the cable installation cavity and passes the through-hole of each connecting piece 1, the cable conductor passes through connecting piece 1 and supports, the opposite face of first outer tegument 2 and second outer tegument 23 all sets up a convex heat-conducting member, it has the flying piece of hot melt ability to insert on the heat-conducting member to be provided with more than one, cable conductor 4 passes the flying piece and hangs through the flying piece support, all be provided with one deck flame retardant coating 55 in first outer tegument 2 and the second outer tegument.
As shown in fig. 4, the heat conducting member includes more than one heat conducting rod 81 and a cross rod 8, the more than one heat conducting rod is welded and fixed on the cross rod 8, the more than one heat conducting rod 81 is injected into the cable outer tegument and inserted into the fireproof layer 55, the cross rod 8 protrudes out of the inner wall surface of the cable outer tegument, a fixing hole 82 is opened on the cross rod facing each heat conducting rod, the fixing hole 82 extends towards the heat conducting rod 81, the hanging part is partially inserted into the fixing hole 82 and fixed by glue, and the outer wall surface of the hanging part is in contact with the inner wall of the fixing hole. The heat conducting piece is used for hanging, the other is used for heat conduction, a hanging piece is fused, when the state of fusing is generally achieved, the outer tegument of the whole bottom is almost burnt, the fireproof layer is carbonized, the core wire is directly damaged by flame burning, and the suspended cable is generally burnt at the bottom when an indoor fire is started, and after the outer tegument of the bottom is burnt, the protection capability is lost, the effect of protecting the core wire of the cable is not achieved, so the suspended cable is not utilized basically, and at the moment, if the flame is not extinguished, the core wire in the cable can be burnt quickly.
In addition, the invention is particularly suitable for cables with local fire, for example, only the bottom outer tegument is provided with flame, and the fire source is far away from the cable by dropping the bottom outer tegument, thereby achieving the purpose of protecting the cable.
Wherein, revolution mechanic sets up ball 6 in first outer tegument 2 and the outer 23 terminal surfaces of second including the embedding, 6 partial protrusion in first of ball, the outside terminal surface of the outer tegument of second, just be provided with the ring channel 7 of round on the connecting piece of ball 6, the bulge of ball stretches into in ring channel 7, first, the outer tegument of second makes rolling motion in ring channel 7 through the ball, after the outer tegument damage of bottom comes off, the tegument of top can overturn to the bottom under the drive of bottom tegument automatically, accomplish the rotation direction through the ball during rotation.
As shown in fig. 5 and 6, the connector 1 is circular, has the same outer diameter as the cable jacket, and has an open outer end of the annular groove 7, so that the ball 6 can slide out of the open outer end of the annular groove 7.
Wherein, the cable core 4 is fixedly connected with the inner wall of the through hole 101 by glue, the whole cable core is in a straightening state, as shown in fig. 3, the suspension members include a suspension wire 5 and a suspension ring 51, the suspension ring 51 has a central hole 52 in the middle, the centers of the central holes 52 between adjacent suspension members are located on the same axis, one end of the suspension wire 5 is inserted into the fixing hole 82 of the heat-conducting member and fixed by glue, in this embodiment, the suspension wire and the suspension rope are made of PVC material with setting ability, when the outside is burnt by flame, the temperature rises continuously, the rising temperature is conducted through the heat conducting rod, because the heat conduction rod is contacted with the hanging piece, the hanging piece can be fused due to the high temperature of the heat conduction rod, and at the moment, after all the hanging pieces are fused, the outer tegument layer on the corresponding side loses the supporting force, and then automatically falls off under the action of gravity.
In this embodiment, the fireproof layer 55 is made of fireproof heat insulation cotton, more than one positioning insertion rod 21 protrudes from the same side of the splicing surface of the first outer layer 2, the second outer layer 23 facing the positioning insertion rod 21 is provided with a positioning insertion hole 22, and the positioning insertion rod 21 is in interference fit with the positioning insertion hole 22. The most important point of the invention is that the positioning inserted bar and the positioning jack are unilateral and are in interference fit, the interference fit is used for increasing the tight fit force after the upper outer tegument and the lower outer tegument are assembled, and the unilateral setting aims to ensure that the bottom outer tegument loses the supporting force and falls off under the action of gravity after a hanging piece of the bottom outer tegument is fused, the tight fit force of the positioning inserted bar and the positioning jack is not enough to support the bottom outer tegument not to fall off, so when the second outer tegument at the bottom falls off, the gravity center of the falling bottom outer tegument is inclined, one end of the positioning inserted bar which is not arranged is firstly opened, then one end of the positioning inserted bar is released, and the first outer tegument at the top is twisted under the single-sided driving force of the second outer tegument, so that the first outer tegument is turned over to the bottom to replace the position.
Wherein, the middle of the outer circular surface of first outer tegument 2 and second outer tegument 23 all imbeds and sets up a counter weight metal strip 3, second outer tegument 23 is located the bottom of first outer tegument 2, the counter weight metal strip 3 weight of second outer tegument 23 is greater than the weight of the counter weight metal strip 3 of first outer tegument, it is the center of gravity that makes things convenient for first, second outer tegument to hang the problem just to set up counter weight metal strip, adopt the counter weight metal strip of different weight to make the second outer tegument be located the bottom of first outer tegument all the time for second outer tegument is perpendicular to the.
The invention has the beneficial effects that: the invention adopts a mode of alternately selecting two sides, realizes automatic falling after the bottom is burnt by flame, takes away part of fire source, simultaneously, the other half tegument layer at the top can be turned to the bottom through gravity, realizes the supplement after the tegument layer at the bottom falls off, and then continuously resists the burning of the flame at the bottom, thereby gaining more time for fire extinguishing.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (8)
1. A composite fireproof cable is characterized in that: the cable comprises more than one assembled cable and a cable main body formed by splicing more than one connecting piece, wherein the cable main body is hung on the top, each assembled cable comprises a first outer tegument and a second outer tegument, the first outer tegument and the second outer tegument are spliced into a circular cable outer tegument, the end faces of the two sides of the first outer tegument and the second outer tegument are rotatably connected with the connecting piece through a rotating structure, a through hole is formed in the middle of the connecting piece, a cable installation cavity is formed in the middle of the cable outer tegument, a cable core wire is arranged in the cable installation cavity and penetrates through the through hole of each connecting piece, the cable core wire is supported by the connecting piece, the opposite surfaces of the first outer tegument and the second outer tegument are respectively provided with a convex heat conducting piece, more than one hanging piece with thermal fusing capability is inserted, the first outer coating layer and the second outer coating layer are both internally provided with a fireproof layer, and the heat conducting piece is partially inserted into the fireproof layer;
the heat conducting part comprises more than one heat conducting rod and a cross rod, the more than one heat conducting rod is welded and fixed on the cross rod, the more than one heat conducting rod enters the outer cable tegument in an injection molding mode and is inserted into the fireproof layer, the cross rod protrudes out of the inner wall surface of the outer cable tegument, a fixing hole is formed in the cross rod opposite to each heat conducting rod, the fixing hole extends towards the heat conducting rod, a hanging part is partially inserted into the fixing hole and fixed by glue, and the outer wall surface of the hanging part is in contact with the inner wall of the fixing hole;
the rotating structure comprises balls embedded in the end faces of the first outer layer and the second outer layer, the balls partially protrude out of the outer end faces of the first outer layer and the second outer layer, a circle of annular grooves are formed in the connecting piece opposite to the balls, the protruding portions of the balls extend into the annular grooves, and the first outer layer and the second outer layer move in a rolling mode in the annular grooves through the balls.
2. The composite fire-resistant cable of claim 1, wherein: the connecting piece is circular, and its external diameter is the same with the cable tegument, and the outside end opening of ring channel for the ball can be from the outside open end roll-off of ring channel.
3. The composite fire-resistant cable of claim 1, wherein: and the cable core wires are fixedly connected with the inner wall of the through hole by glue, and the whole cable core wire is in a straightening state.
4. The composite fire-resistant cable of claim 1, wherein: the suspension member comprises a suspension line and a suspension ring, a central hole is formed in the middle of the suspension ring, the circle centers of the central holes between the adjacent suspension members are located on the same axis, and one end of the suspension line is inserted into the fixing hole of the heat conducting member and fixed by glue.
5. The composite fire-resistant cable of claim 4, wherein: the suspension lines and the suspension ropes are made of PVC materials or rubber with shaping capacity.
6. The composite fire-resistant cable of claim 1, wherein: the fireproof layer is made of fireproof heat-insulating cotton.
7. The composite fire-resistant cable of claim 1, wherein: more than one positioning insertion rod is arranged on the same side of the splicing surface of the first outer layer in a protruding mode, a positioning insertion hole is formed in the second outer layer opposite to the positioning insertion rod, and the positioning insertion rods are assembled in an interference mode and enter the positioning insertion hole.
8. The composite fire-resistant cable of claim 1, wherein: and the balance weight metal strip of the second outer layer is heavier than that of the first outer layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910429885.XA CN110047620B (en) | 2019-05-22 | 2019-05-22 | Composite fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910429885.XA CN110047620B (en) | 2019-05-22 | 2019-05-22 | Composite fireproof cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110047620A CN110047620A (en) | 2019-07-23 |
| CN110047620B true CN110047620B (en) | 2020-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910429885.XA Active CN110047620B (en) | 2019-05-22 | 2019-05-22 | Composite fireproof cable |
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| Country | Link |
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| CN (1) | CN110047620B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110354421B (en) * | 2019-07-25 | 2020-10-16 | 国网江西省电力有限公司鹰潭供电分公司 | Electric power construction electric power fire protection device |
| CN110544558B (en) * | 2019-09-04 | 2021-03-19 | 冠纳电缆有限公司 | Dragging cable |
| CN110718328B (en) * | 2019-10-21 | 2021-05-04 | 东莞市博利电业有限公司 | Fireproof hanging cable |
| CN111477394B (en) * | 2020-04-24 | 2021-12-21 | 陕西永光电力电缆制造有限公司 | a composite cable |
| CN111540512B (en) * | 2020-05-13 | 2021-10-26 | 人民电缆集团有限公司 | Composite fireproof cable |
| CN113488259B (en) * | 2021-07-19 | 2022-09-20 | 钟丽玲 | Underground cable |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013048676A1 (en) * | 2011-09-30 | 2013-04-04 | Ticona Llc | Electrical conduit containing a fire-resisting thermoplastic composition |
| JP5905861B2 (en) * | 2013-09-02 | 2016-04-20 | ニチアス株式会社 | Endothermic material using inorganic porous material |
| CN205911699U (en) * | 2016-06-21 | 2017-01-25 | 天津长园电子材料有限公司 | Fire -retardant pipe holder of environmental protection |
| CN205845560U (en) * | 2016-08-05 | 2016-12-28 | 刘惠云 | fireproof cable |
| CN207038231U (en) * | 2017-05-23 | 2018-02-23 | 王卓 | A kind of flame retardant cable |
| CN208985771U (en) * | 2018-11-27 | 2019-06-14 | 广州澳通电线电缆有限公司 | Fireproof cable for easy installation |
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2019
- 2019-05-22 CN CN201910429885.XA patent/CN110047620B/en active Active
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| Publication number | Publication date |
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| CN110047620A (en) | 2019-07-23 |
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Effective date of registration: 20200721 Address after: Jia Jia Kou Zhen Xi Huang Er Ying Cun, Ningjin County, Xingtai City, Hebei Province Applicant after: YAXING CABLE GROUP Co.,Ltd. Address before: Room 502, Building 26, Lotus Block 101 Lotus Road, Yuhang District, Hangzhou City, Zhejiang Province Applicant before: Lu Wenjie |
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