CN206864230U - A kind of fire resistant special cable - Google Patents
A kind of fire resistant special cable Download PDFInfo
- Publication number
- CN206864230U CN206864230U CN201720622526.2U CN201720622526U CN206864230U CN 206864230 U CN206864230 U CN 206864230U CN 201720622526 U CN201720622526 U CN 201720622526U CN 206864230 U CN206864230 U CN 206864230U
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- cable
- core conductor
- silicon rubber
- walls
- triangular
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- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 8
- 239000004020 conductor Substances 0.000 claims abstract description 51
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 33
- 239000000919 ceramic Substances 0.000 claims abstract description 29
- 239000003365 glass fiber Substances 0.000 claims abstract description 9
- 230000017525 heat dissipation Effects 0.000 claims description 7
- 239000011261 inert gas Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000010445 mica Substances 0.000 claims description 5
- 229910052618 mica group Inorganic materials 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 abstract 2
- 238000007789 sealing Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 37
- 238000011084 recovery Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000004945 silicone rubber Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 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 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model provides a kind of fire resistant special cable, including cable body, and cable body includes cable core conductor, oversheath and Ceramic silicon rubber skeleton；Ceramic silicon rubber skeleton includes frame body, four side tube-walls of the frame body form the triangular walls of opening outwardly to central concave, four triangular walls are uniformly distributed and each bottom wall contacts with each other so as to enclose a square area at the center of frame body, and area filling of the frame body between two neighboring triangular walls has glass fiber high-temperature rope；Cable core conductor includes main core conductor and scattered core conductor, and main core conductor is embedded in the square area after being coated by the first insulating barrier, dissipates after core conductor is coated by the second insulating barrier and is separately positioned in four triangular walls；Oversheath is coated on outside Ceramic silicon rubber skeleton, has expansible sealing.The utility model proposes cable by being improved to Ceramic silicon rubber layer, solving existing cable core can not quick-replaceable technical problem.
Description
Technical Field
The utility model relates to the technical field of cables, concretely relates to high temperature resistant fire prevention special type cable.
Background
The high temperature resistant fireproof cable is suitable for signal detection in high temperature environment with AC rated voltage of 300/500V and below. It is especially suitable for the control of the protection loop of the fire-fighting and security system and the transmission line of the power. The high-temperature-resistant fireproof cable used in some special environments usually comprises a plurality of core conductors, and the core conductors are usually wrapped in the middle of the cable by various wrapping layers and extrusion layers. For this reason, when some cores fail, they cannot be replaced. In most cases it is only possible to recover the cable as waste, which results in a considerable reduction in the utilization of the cable (and also in the partial core conductors which are undamaged). And in the process of recovery, the core conductor is tightly wrapped by various structural layers such as a wrapping layer, an extrusion coating layer and the like, so that the recovery process is complex and difficult, and the efficiency is low.
SUMMERY OF THE UTILITY MODEL
The to-be-solved problem of the utility model is to provide a high temperature resistant fire prevention special cable to the above-mentioned not enough that exists among the prior art, this cable improves through the ceramic silicon rubber layer to traditional cable to ingenious design has solved thereby current high temperature resistant fire prevention cable core leads to unable quick replacement's technical problem because of various structural layer cladding.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a high-temperature-resistant fireproof special cable comprises a cable body, wherein the cable body comprises a core conductor, an outer sheath and a ceramic silicon rubber framework; wherein,
the ceramic silicon rubber framework comprises a cylindrical framework body, wherein the walls of four sides of the framework body are sunken towards the center to form triangular walls with outward openings, the four triangular walls are uniformly distributed, all bottom walls are in mutual contact so as to form a square area in the center of the framework body, and the area of the framework body between two adjacent triangular walls is filled with a glass fiber high-temperature rope;
the wire core conductor comprises a main core conductor and a heat dissipation conductor, the main core conductor is composed of four mutually meshed metal wires and is embedded in the square area after being coated by a first insulating layer, so that the main core conductor is surrounded by the bottom wall of the triangular wall of the ceramic silicon rubber framework, inert gas is filled in the first insulating layer, the heat dissipation conductor is composed of one metal wire and is respectively arranged in the four triangular walls after being coated by a second insulating layer, heat conduction strips are also arranged in the positions, close to the openings, in the triangular walls, the outer edges of the heat conduction strips are mutually matched with the cylinder wall of the framework body, and the inner edges of the heat conduction strips are kept in contact with the second insulating layer;
the outer sheath is coated outside the ceramic silicon rubber framework and is provided with a seam which can be opened.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model provides a high temperature resistant fire prevention special type cable compares current cable and has that the sinle silk is changed soon, retrieve fast technological effect. Particularly, the utility model discloses set traditional ceramic silicone rubber layer to the skeleton form that has special shape, utilize the triangle wall space of this skeleton to pack into scattered core conductor, utilize the space that the triangle wall bottom wall of this skeleton encloses to pack into main core conductor, make scattered core conductor and main core conductor wrap by the same layer ceramic silicone rubber, when material saving, make again scattered core conductor only need take out from the opening part of triangle wall when needing to be changed or the cable is retrieved, then draw out through the seam mouth of oversheath can; and the replacement or the recovery of main core conductor is realized through filling inert gas in the insulating layer, namely punctures the insulating layer and releases inert gas, lets the insulating layer narrow, alright easily take out from the cable center. This approach has significant advantages for the recovery of the main core conductor.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is the cross-sectional schematic view of the high temperature resistant fireproof special cable of the utility model.
Detailed Description
In order to make the utility model realize that technical means, creation characteristics, achievement purpose and effect are clearer and easily understand, it is right to combine below the figure and the detailed implementation mode the utility model discloses do further explanation:
with reference to fig. 1, the utility model provides a high temperature resistant fireproof special cable, which comprises a cable body 100, wherein the cable body 100 comprises a core conductor 110 and an outer sheath 120, and further comprises a ceramic silicon rubber framework 130; wherein,
the ceramic silicon rubber framework 130 comprises a cylindrical framework body 131, wherein the four side walls of the framework body 131 are recessed towards the center to form triangular walls 132 with outward openings, the four triangular walls 132 are uniformly distributed, bottom walls 132a are contacted with each other so as to form a square area in the center of the framework body 131, and the area of the framework body 131 between two adjacent triangular walls 132 is filled with a glass fiber high-temperature rope 140;
the core conductor 110 includes a main core conductor 111 and (four) heat dissipation conductors 112, the main core conductor 111 is composed of four metal wires engaged with each other, and the four metal wires are embedded in the square area after being coated by a first insulating layer 113, so as to be surrounded by a triangular wall bottom wall 132a of a ceramic silicon rubber framework 130, inert gas is filled in the first insulating layer 113, the heat dissipation conductor 112 is composed of one metal wire and is respectively arranged in the four triangular walls 132 after being coated by a second insulating layer 114, a heat conduction strip 150 is further arranged in each triangular wall 132 at a position close to the opening, the outer edge of the heat conduction strip 150 is matched with the cylinder wall of the framework body 131, and the inner edge is kept in contact with the second insulating layer 114;
the outer sheath 120 is wrapped around a ceramic silicone rubber backbone 130 and has an expandable slit 124.
In the scheme, the method comprises the following steps: firstly, for ceramic silicon rubber, a certain proportion of ceramic-forming filler, fluxing agent, cross-linking agent and other auxiliary agents are added into a silicon rubber matrix, and the ceramic silicon rubber is prepared by vulcanization and cross-linking. The ceramic silicon rubber can keep good elasticity and mechanical property of common silicon rubber at normal temperature, and the ceramic silicon rubber can form a hard ceramic protective layer under the flame burning of 500-700 ℃, so that the ceramic silicon rubber has the effects of isolating a fire source and preventing fire, and is widely applied to fireproof cables. However, in the multi-core cable of the present invention, almost every cable conductor needs to be individually covered with the ceramic silicon rubber after being covered with the insulating layer, the process is complicated, the material investment cost is high, and especially when the cable core is replaced or recycled, the ceramic silicon rubber can only be peeled off and discarded.
Therefore, the utility model discloses in the above-mentioned scheme that provides, set the ceramic silicon rubber layer into the skeleton form that has special shape earlier, utilize the triangle wall 132 space of this skeleton to pack into scattered core conductor 112, the space that the triangle wall 132 diapire that utilizes this skeleton encloses closes is packed into main core conductor 111 for scattered core conductor 112 and main core conductor 111 are wrapped by the ceramic silicon rubber of same layer, consequently both practiced thrift the material, can also let the material can not be discarded because of the change of cable or retrieving, thereby obtain the reutilization. With reference to fig. 1, for the replacement or recovery of the core-dispersed conductor 112, it is only required to be taken out from the opening of the triangular wall 132 and then pulled out through the slit 124 of the outer sheath 120; for replacement or recovery of the main core conductor 111, the insulating layer is filled with inert gas, that is, the insulating layer is punctured to release the inert gas, so that the insulating layer is narrowed, and the main core conductor can be easily drawn out from the center of the cable. This approach has a significant advantage for the recovery of the main core conductor 111.
Meanwhile, the glass fiber high-temperature rope 140 related in the above scheme is formed by weaving high-temperature-resistant high-strength glass fibers through a special process, is an elastic glass fiber rope formed by an innovative weaving method, and has the main performances of high temperature resistance, corrosion resistance, high strength and the like. Still furthermore, the utility model discloses still be provided with heat conduction strip 150 at the opening part of triangle wall 132, utilize this heat conduction strip 150 can absorb the heat that looses core conductor 112 circular telegram and distribute to outside distributes, can let scattered core conductor 112 can obtain timely heat dissipation like this, thereby obtains longer life.
As a further implementation detail of the present invention: as shown in fig. 1, a pulling piece 115 is arranged outside the second insulating layer 114 along the axial direction of the cable, and the pulling piece 115 faces the opening direction of the triangular wall 132; correspondingly, an opening groove (not shown) for inserting the pulling piece 115 is formed at the inner side of the heat conducting strip 150. Here, the present invention provides the pulling piece 115 on the second insulating layer 114, so that the loose core conductor 112 can be easily pulled out from the triangular wall 132. Since the cerammed silicone rubber has the same characteristics as ordinary silicone rubber, i.e., elasticity, at normal temperature, the triangular wall 132 is pressed out when the core-dispersed conductor 112 is taken out of the triangular wall 132.
In order to fully utilize the internal gap of the cable, a glass fiber high temperature rope 140 is also filled between the inner side of each triangular wall 132 and the second insulating layer 114, as shown in fig. 1.
To the outer sheath 120, the utility model discloses establish that set up like this: with reference to fig. 1, the outer sheath 120 includes a sheath skin 121 having an inner cavity, and a mica tape fire-resistant layer 122 and a copper wire braided shielding layer 123 which are located in the sheath skin 121, the mica tape fire-resistant layer 122 is close to the inner layer of the sheath skin 121, the copper wire braided shielding layer 123 is close to the outer layer of the sheath skin 121, the sheath skin 121 has two edges, and the two edges are closed to form the seam 124. Here, the outer sheath 120 is provided in the form of a double-layer sheath 121, and the flame retardant layer and the shielding layer are disposed in the sheath 121, so that the flame retardant property and the shielding property of the whole cable are ensured, and the outer sheath 120 can rotate under the action of stress on the ceramizable silicon rubber framework 130, so that the seam 124 of the outer sheath 120 can be aligned with any triangular wall 132 opening, and then the damaged wire core can be taken out. Because the outer sheath 120 is soft throughout, the seam 124 can be spread apart under the compression of the loose conductor 112. As a preferred embodiment, the slits 124 are glued together or provided with an opening and closing member (not shown). The opening and closing component can adopt a zipper, a fastener and the like. And will not be described in detail here.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (5)
1. A high-temperature-resistant fireproof special cable comprises a cable body, wherein the cable body comprises a core conductor and an outer sheath, and is characterized by further comprising a ceramic silicon rubber framework; wherein,
the ceramic silicon rubber framework comprises a cylindrical framework body, wherein the walls of four sides of the framework body are sunken towards the center to form triangular walls with outward openings, the four triangular walls are uniformly distributed, all bottom walls are in mutual contact so as to form a square area in the center of the framework body, and the area of the framework body between two adjacent triangular walls is filled with a glass fiber high-temperature rope;
the wire core conductor comprises a main core conductor and a heat dissipation conductor, the main core conductor is composed of four mutually meshed metal wires and is embedded in the square area after being coated by a first insulating layer, so that the main core conductor is surrounded by the bottom wall of the triangular wall of the ceramic silicon rubber framework, inert gas is filled in the first insulating layer, the heat dissipation conductor is composed of one metal wire and is respectively arranged in the four triangular walls after being coated by a second insulating layer, heat conduction strips are also arranged in the positions, close to the openings, in the triangular walls, the outer edges of the heat conduction strips are mutually matched with the cylinder wall of the framework body, and the inner edges of the heat conduction strips are kept in contact with the second insulating layer;
the outer sheath is coated outside the ceramic silicon rubber framework and is provided with a seam which can be opened.
2. The special high-temperature-resistant fireproof cable according to claim 1, wherein a pulling piece is arranged outside the second insulating layer along the axial direction of the cable, and the pulling piece faces the opening direction of the triangular wall; correspondingly, the inner side of the heat conduction strip is provided with an open slot for inserting the pulling piece.
3. A special cable as claimed in claim 1, wherein a glass fiber high temperature rope is filled between the inner side of each triangular wall and the second insulating layer.
4. The special high-temperature-resistant fireproof cable according to any one of claims 1 to 3, wherein the outer sheath comprises a sheath skin with an inner cavity, a mica tape fire-resistant layer and a copper wire braided shielding layer, the mica tape fire-resistant layer is positioned in the sheath skin, the mica tape fire-resistant layer is positioned close to the inner layer of the sheath skin, the copper wire braided shielding layer is positioned close to the outer layer of the sheath skin, the sheath skin is provided with two edge parts, and the two edge parts are closed to form the seam.
5. A high temperature resistant fire-resistant specialty cable as claimed in claim 4 wherein said seams are glued together or provided with an opening and closing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720622526.2U CN206864230U (en) | 2017-05-31 | 2017-05-31 | A kind of fire resistant special cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720622526.2U CN206864230U (en) | 2017-05-31 | 2017-05-31 | A kind of fire resistant special cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206864230U true CN206864230U (en) | 2018-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720622526.2U Expired - Fee Related CN206864230U (en) | 2017-05-31 | 2017-05-31 | A kind of fire resistant special cable |
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| Country | Link |
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| CN (1) | CN206864230U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108878027A (en) * | 2018-06-28 | 2018-11-23 | 怀宁宜庆电线电缆有限公司 | A kind of new-energy automobile tensile cable |
| CN110164600A (en) * | 2019-05-20 | 2019-08-23 | 浙江中大元通特种电缆有限公司 | Ceramic silicon rubber insulation temperature-resisting cable |
-
2017
- 2017-05-31 CN CN201720622526.2U patent/CN206864230U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108878027A (en) * | 2018-06-28 | 2018-11-23 | 怀宁宜庆电线电缆有限公司 | A kind of new-energy automobile tensile cable |
| CN110164600A (en) * | 2019-05-20 | 2019-08-23 | 浙江中大元通特种电缆有限公司 | Ceramic silicon rubber insulation temperature-resisting cable |
| CN110164600B (en) * | 2019-05-20 | 2024-06-07 | 浙江中大元通特种电缆有限公司 | Ceramic silicon rubber insulation temperature-resistant cable |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180109 Termination date: 20180531 |