CN211788265U - Double-layer co-extrusion flame-retardant fire-resistant cable - Google Patents
Double-layer co-extrusion flame-retardant fire-resistant cable Download PDFInfo
- Publication number
- CN211788265U CN211788265U CN201922370871.3U CN201922370871U CN211788265U CN 211788265 U CN211788265 U CN 211788265U CN 201922370871 U CN201922370871 U CN 201922370871U CN 211788265 U CN211788265 U CN 211788265U
- Authority
- CN
- China
- Prior art keywords
- layer
- retardant
- flame
- fire
- double
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a fire-retardant fire-resistant cable of bilayer altogether, including central skeleton, the material of central skeleton is light stainless steel, central skeleton includes circular parent tube and evenly sets up a plurality of fins outside the parent tube, the signal cable core set up in circular parent tube center, pack by the packing bed of material around the signal cable core, each it has fan-shaped insulating layer to extrude between the fin, fan-shaped insulating layer center is provided with the cable core, fan-shaped insulating layer wraps up in proper order outward has tighten layer, insulating layer and oversheath. The utility model discloses a set up the intensity of strengthening the cable on the one hand of central skeleton, on the other hand separates each cable core in with the cable, guarantees that the cable core does not contact each other, ensures safety, reduces the clearance between the cable core simultaneously, improves fire-retardant fire resistance.
Description
Technical Field
The utility model relates to a wire and cable technical field, concretely relates to fire-retardant fire-resistant cable is crowded altogether to bilayer.
Background
Taking home decoration electric wires and cables as an example, more and more household appliances are used in households. The load becomes heavier. In addition, people have higher and higher requirements on safety, economy, environmental protection and the like of the electric wires and cables. At present, most of polyvinyl chloride (PVC) insulated wires for engineering construction and market sale are made by insulating and coating an electrical round copper wire with common PVC plastics, and the PVC insulated wires are widely adopted due to simple production process, qualified performance and low price. However, the electric wire has the fatal defects of poor flame retardance, easy fire accident caused by overload current, and the electric wire and the electric cable release a large amount of toxic smoke (the main component is hydrogen chloride) in the combustion process, which is a main factor causing death in fire, and the electric wire and the electric cable have the defect of short service life.
Any matter that burns must meet the following three conditions: combustibles, oxidants, and temperature (ignition source). Oxygen contained in the air is an oxidant, so that in the structural design of the cable, the reduction of the existence of the air by reducing the gaps between the cables is a common method, and therefore, the prior art usually adopts a method of arranging flame-retardant or fire-resistant materials such as glass fiber ropes, glass fiber tapes, mica tapes, asbestos ropes and the like between the structures of the cable, so that the flame-retardant and fire-resistant performances of the cable can be improved. The method has the advantages that the use of a large amount of flame-retardant or fire-resistant materials can increase the production cost, and the flame-retardant or fire-resistant materials release a large amount of toxic smoke (the main component is hydrogen chloride) in the combustion process to be harmful to human bodies. In order to reduce the gaps among the wire cores, corrugated conductors are often used in the prior art, and the corrugated wire cores are formed through extrusion insulation and then cabling is carried out, so that the gaps among the wire cores can be reduced to the minimum. However, the processing of corrugated conductors has a number of difficulties and disadvantages in the production process: firstly, the process difficulty is high, and the requirements on the design of a conductor structure and the characteristics of a tooling mold and equipment are high in order to meet the requirements on the sufficient flexibility and stability of the corrugated conductor; secondly, the conductor is required to be pressed to prevent water from permeating, so that the filling coefficient of the lead is improved, the outer diameter is reduced, and gaps among the conductors are reduced; thirdly, electric field concentration and damage to the cable insulation layer are easily caused in the processing process of each corner of the corrugated conductor.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a fire-retardant fire-resistant cable is crowded altogether to bilayer, through setting up the intensity of strengthening the cable on the one hand of central skeleton, on the other hand separates each cable core in with the cable, guarantees that the cable core does not contact each other, ensures safety, reduces the clearance between the cable core simultaneously, improves fire-retardant fire resistance.
In order to solve the technical problem, the utility model provides a fire-retardant fire-resistant cable is crowded altogether to bilayer, including central skeleton, the material of central skeleton is light stainless steel, central skeleton includes circular parent tube and evenly sets up a plurality of fins outside the parent tube, the signal cable core set up in circular parent tube center, pack by the infill material layer around the signal cable core, each extrude between the fin and have fan-shaped insulating layer, fan-shaped insulating layer center is provided with the cable core, fan-shaped insulating layer wraps up in proper order outward and has pricked layer, insulating layer and oversheath.
Further, the number of the fins is the same as the number of the cable cores.
Further, the cable core is a tinned copper wire.
Further, a flame-retardant isolation layer is arranged between the outer sheath and the insulation layer.
Further, the flame-retardant isolation layer is made of flame-retardant non-woven fabrics.
Further, the insulating layer is made of low-smoke halogen-free flame-retardant cross-linked polyethylene, and the outer sheath layer is made of low-smoke halogen-free flame-retardant polyolefin.
Furthermore, the outer side of the cable core is wrapped with a double-faced synthetic mica tape and a silica aerogel insulating layer at one time.
Furthermore, the silicon aerogel insulating layer comprises an inner insulating layer and an outer insulating layer, and the inner insulating layer and the outer insulating layer are wrapped on the periphery of the cable core by a double-layer co-extrusion method.
Furthermore, the signal cable core is stranded at the center of the circular base pipe.
The utility model discloses a beneficial effect that double-deck crowded fire-retardant fire-resistant cable altogether compares with prior art is through setting up the intensity of strengthening the cable on the one hand of central skeleton, and on the other hand separates each cable core in with the cable, guarantees that the cable core does not contact each other, ensures safety, reduces the clearance between the cable core simultaneously, improves fire-retardant fire resistance.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
Referring to fig. 1, for the utility model discloses a double-deck fire-retardant fire-resistant cable's of crowded embodiment altogether is drawn, including central skeleton 10, in order to improve the structural strength of cable on the one hand, the material of central skeleton 10 is the light stainless steel, and on the other hand, central skeleton 10 includes circular parent tube 11 and evenly sets up a plurality of fins 12 outside parent tube 11, and central skeleton 10 separates into the airtight space of a plurality of complementary intercommunications with the cable center. The signal cable core 20 is arranged in the center of the circular base tube 11, the periphery of the signal cable core is filled with a filler layer 21, the signal cable core 20 is twisted in the center of the circular base tube 11, a fan-shaped insulating layer 31 is extruded between the fins 12, and a cable core 30 is arranged in the center of the fan-shaped insulating layer 31. The signal cable cores 20 and the cable cores 30 are separated in different closed spaces, the cable can simultaneously transmit power and control signals, the cable cores are not in contact with each other, and even if combustion occurs, other cable cores cannot be influenced, so that safety is guaranteed. Meanwhile, the fan-shaped insulating layer 31 is tightly connected with the cable core 30, the base tube 11 and the fins 12, so that gaps among cable cores are reduced, and the flame retardant property of the cable is improved. The sector insulating layer 31 is sequentially wrapped with a tightening layer 41, an insulating layer 42 and an outer sheath 43. The tight layer 41 further extrudes the fan-shaped insulating layer 31, and a gap is ensured between the cable cores, in a preferred embodiment of the present invention, the tight layer 41 is made of a woven flame retardant material. The outer sheath 43 may be provided with one or more layers depending on the application.
The utility model discloses the quantity of cable core 30 sets up according to actual conditions in the cable, for separating each cable core 30, the quantity of fin 12 with the quantity of cable core 30 is the same. The cable core 30 is a tinned copper wire, can effectively improve the corrosion resistance of the conductor, and has certain strength and hardness.
In another preferred embodiment of the present invention, a flame retardant isolation layer 44 is disposed between the outer sheath 43 and the insulation layer 42. Improve the overall flame-retardant and fire-resistant performance of the cable. The flame-retardant isolation layer 44 is made of flame-retardant non-woven fabric wrapping.
Insulating layer 42 is made by low smoke and zero halogen fire-retardant crosslinked polyethylene, and halogen-free fire-retardant crosslinked polyethylene has good insulating nature to can improve the fire-resistant and high temperature resistance of cable simultaneously, oversheath 43 layer is made by low smoke and zero halogen fire-retardant polyolefin, and halogen-free fire-retardant polyolefin oversheath 43 has very excellent weatherability and durability, can protect the inside of cable for a long time, and its self also has very high mechanical strength moreover.
The outer side of the cable core 30 is sequentially wrapped with a double-sided synthetic mica tape 32 and a silica aerogel insulating layer 33. The double-sided synthetic mica tape 32 has strong fire resistance, can prevent flame from damaging a cable conductor, and simultaneously prevents the cable core 30 from being exposed after the insulating layer is melted by the high temperature of the flame; the silica aerogel insulating layer 33 further improves the insulating property of the cable and ensures the normal and stable operation of the cable. Further, in this embodiment, the silicon aerogel insulation layer 33 includes an inner insulation layer 33a and an outer insulation layer 33b, and the inner insulation layer 33a and the outer insulation layer 33b are wrapped around the cable core 30 by a double-layer co-extrusion method. The two insulating layers become a whole, so that the two insulating layers with linear structures become three-dimensional net structures, and the insulating and fire-resistant performance is improved.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (9)
1. The utility model provides a fire-retardant fire resisting cable is altogether crowded to bilayer, its characterized in that, includes central skeleton, the material of central skeleton is light stainless steel, central skeleton includes circular parent tube and evenly sets up a plurality of fins outside the parent tube, the signal cable core set up in circular parent tube center, pack by the packing bed of material around the signal cable core, each it has fan-shaped insulating layer to extrude between the fin, fan-shaped insulating layer center is provided with the cable core, fan-shaped insulating layer wraps up in proper order outward has tighten layer, insulating layer and oversheath.
2. The double-layer co-extruded flame-retardant fire-resistant cable according to claim 1, wherein the number of the fins is the same as the number of the cable cores.
3. The double-layer co-extruded flame-retardant and fire-resistant cable according to claim 1, wherein the cable core is tinned copper wire.
4. The double-layer co-extruded flame-retardant fire-resistant cable according to claim 1, wherein a flame-retardant isolation layer is arranged between the outer sheath and the insulation layer.
5. The double-layer co-extruded flame-retardant and fire-resistant cable according to claim 4, wherein the flame-retardant isolation layer is made of flame-retardant non-woven fabric.
6. The double-layer co-extruded flame-retardant fire-resistant cable according to claim 1, wherein the insulation layer is made of low-smoke halogen-free flame-retardant cross-linked polyethylene, and the outer sheath layer is made of low-smoke halogen-free flame-retardant polyolefin.
7. The double-layer co-extrusion flame-retardant fire-resistant cable according to claim 1, wherein the cable core is wrapped with a double-sided synthetic mica tape and a silica aerogel insulating layer at one time.
8. The double-layer co-extrusion flame-retardant fire-resistant cable according to claim 7, wherein the silicon aerogel insulation layer comprises an inner insulation layer and an outer insulation layer, and the inner insulation layer and the outer insulation layer are coated on the periphery of the cable core by adopting a double-layer co-extrusion method.
9. The double-layer co-extruded flame-retardant fire-resistant cable according to claim 1, wherein the signal cable core is stranded in the center of the circular base pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922370871.3U CN211788265U (en) | 2019-12-25 | 2019-12-25 | Double-layer co-extrusion flame-retardant fire-resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922370871.3U CN211788265U (en) | 2019-12-25 | 2019-12-25 | Double-layer co-extrusion flame-retardant fire-resistant cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211788265U true CN211788265U (en) | 2020-10-27 |
Family
ID=72980473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922370871.3U Active CN211788265U (en) | 2019-12-25 | 2019-12-25 | Double-layer co-extrusion flame-retardant fire-resistant cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211788265U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112447319A (en) * | 2020-11-02 | 2021-03-05 | 马鞍山安慧智电子科技有限公司 | Special computer cable for communication |
| CN113470879A (en) * | 2021-07-16 | 2021-10-01 | 领迅电线工业(上海)有限公司 | Double-layer co-extrusion bending-resistant flame-retardant wire cable |
| CN113611448A (en) * | 2021-07-22 | 2021-11-05 | 海盐爱德森特种线缆有限公司 | Low-temperature-resistant and corrosion-resistant cable |
-
2019
- 2019-12-25 CN CN201922370871.3U patent/CN211788265U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112447319A (en) * | 2020-11-02 | 2021-03-05 | 马鞍山安慧智电子科技有限公司 | Special computer cable for communication |
| CN113470879A (en) * | 2021-07-16 | 2021-10-01 | 领迅电线工业(上海)有限公司 | Double-layer co-extrusion bending-resistant flame-retardant wire cable |
| CN113611448A (en) * | 2021-07-22 | 2021-11-05 | 海盐爱德森特种线缆有限公司 | Low-temperature-resistant and corrosion-resistant cable |
| CN113611448B (en) * | 2021-07-22 | 2022-12-27 | 海盐爱德森特种线缆有限公司 | Low-temperature-resistant and corrosion-resistant cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211788265U (en) | Double-layer co-extrusion flame-retardant fire-resistant cable | |
| CN201707950U (en) | Environment-friendly low-smoke halogen-free fire-retardant refractory control cable | |
| CN205303048U (en) | High temperature resistant fireproof cable of using | |
| CN104751957B (en) | Photovoltaic cable and preparation method thereof | |
| CN214410851U (en) | Flame-retardant cable | |
| CN210984373U (en) | Cross-linked polyethylene insulated corrugated aluminum sheath polyvinyl chloride sheath power cable | |
| CN201758017U (en) | Low-smoke halogen-free environment-friendly flame-retardant intrinsic safety system control cable | |
| CN210443320U (en) | Flame-retardant heat-resistant cable | |
| CN209912596U (en) | Isolated medium-voltage fire-resistant cable | |
| CN201893161U (en) | Soft type low smoke zero halogen cable for ship | |
| CN211479706U (en) | Flame-retardant photovoltaic cable for ultra-high temperature environment | |
| CN212411653U (en) | Mineral insulated cable with fire-resistant embossing aluminum sheath | |
| CN205943553U (en) | Aluminum alloy crowded insulating radiation cross -linking does not altogether have steamed low fire -retardant low voltage power cable of cigarette | |
| CN203787197U (en) | Antiflaming polyolefin sheath power cable | |
| CN213400657U (en) | Water-blocking fireproof carbon fiber woven home decoration cloth cable | |
| CN218730062U (en) | Flame-retardant signal cable | |
| CN110660506A (en) | Fireproof cable | |
| CN211376234U (en) | Halogen-free low-smoke flame-retardant cold-resistant control cable | |
| CN210378564U (en) | Novel high-temperature-resistant, fireproof and waterproof cable for metallurgical industry | |
| CN220252918U (en) | Fire-resistant tensile multicore power cable | |
| CN210837223U (en) | Low-smoke halogen-free flame-retardant wire | |
| CN216772884U (en) | Special anti-freezing overhead insulated cable for wind power generation | |
| CN220933798U (en) | New energy environment-friendly fire-resistant wire | |
| CN215988197U (en) | Aluminum alloy co-extrusion insulation irradiation crosslinking halogen-free low-smoke flame-retardant power cable | |
| CN211087946U (en) | Flexible medium-voltage fireproof cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |