CN210640007U - Fireproof cable - Google Patents
Fireproof cable Download PDFInfo
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- CN210640007U CN210640007U CN201920510465.XU CN201920510465U CN210640007U CN 210640007 U CN210640007 U CN 210640007U CN 201920510465 U CN201920510465 U CN 201920510465U CN 210640007 U CN210640007 U CN 210640007U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The utility model belongs to the technical field of the fireproof cable, a fireproof cable is proposed, which comprises a conductor, mineral insulating layer, the second insulating layer, the protective sheath, the filling layer, mineral insulating layer parcel sets up the outside at the conductor, the second insulating layer includes crosslinked polyethylene layer and crosslinked polyolefin layer, crosslinked polyethylene layer parcel sets up the outside at mineral insulating layer, crosslinked polyolefin layer parcel sets up in the crosslinked polyethylene layer outside, the protective sheath includes insulating layer and low smoke and zero halogen sheath, insulating layer includes glass fiber cloth layer and armor, the armor parcel sets up the outside on glass fiber cloth layer, the glass fiber cloth layer sets up the outside at the second insulating layer, low smoke and zero halogen sheath parcel sets up the outside at insulating layer, the filling layer sets up between second insulating layer and insulating layer. Through the technical scheme, the problems of insufficient fireproof performance and high temperature resistance and low safety factor in the prior art are solved.
Description
Technical Field
The utility model belongs to the technical field of the fireproof cable, a fireproof cable is related to.
Background
Cables are widely used as a medium for power transmission and power distribution in control and installation, connection of devices, transmission of electric power, and the like. The cable may have short circuit or open circuit problems during use, which may cause interruption of power communication, so that today when information technology is rapidly developed, the requirement for ensuring reliability of information transmission and power supply is higher and higher, which puts higher demands on the performance of the cable.
The performance indexes of the cable performance are shown in the following steps besides the self conductivity: fire resistance, moisture resistance, explosion resistance, corrosion resistance, temperature performance, expansion performance, tensile strength, elasticity, plasticity, hardness, toughness, fatigue strength and the like. Among them, the requirements for the fire-retardant property of the cable are the most severe. At present, the structure of most fireproof cables causes the fireproof performance and the high temperature resistance of the cables to be insufficient, and the safety factor is not high.
SUMMERY OF THE UTILITY MODEL
The utility model provides a fireproof cable has solved among the prior art fire behavior and high temperature resistance can not enough, problem that factor of safety is not high.
The technical scheme of the utility model is realized like this:
a fireproof cable comprises a conductor and a fireproof layer,
a mineral insulating layer wrapped around the outer side of the conductor,
the second insulating layer comprises a crosslinked polyethylene layer and a crosslinked polyolefin layer, the crosslinked polyethylene layer is wrapped on the outer side of the mineral insulating layer, the crosslinked polyolefin layer is wrapped on the outer side of the crosslinked polyethylene layer,
a protective sheath, the protective sheath comprises
An insulating layer including a glass fiber cloth layer and an armor layer, the armor layer wrapping the glass fiber cloth layer, the glass fiber cloth layer being disposed on the outer side of the second insulating layer, and
the low-smoke halogen-free sheath is wrapped on the outer side of the isolation layer,
a filler layer disposed between the second insulating layer and the insulating layer.
As a further technical scheme, the number of the conductors is 4, and the conductors are all formed by twisting copper wires.
As a further technical scheme, the outer wall of the second insulating layer is circumferentially provided with latch teeth, and the latch teeth on the second insulating layer adjacent to the outer side of the conductor are meshed with each other.
As a further technical scheme, the inner wall of the isolation layer is provided with 4 clamping edges, and each clamping tooth, close to one side of the isolation layer, of the second insulation layer is clamped on the clamping edge.
As a further technical scheme, the outside of low smoke and zero halogen sheath is provided with the enhancement layer, the enhancement layer includes first enhancement layer and second enhancement layer, the second enhancement layer sets up the outside of first enhancement layer, be provided with a plurality of first semi-circular archs on the inner wall of first enhancement layer, be provided with a plurality of second semi-circular archs on the outer wall of second enhancement layer, first semi-circular arch with the crisscross setting of second semi-circular arch.
As a further technical scheme, a waterproof layer is arranged on the outer side of the second reinforcing layer.
As a further technical scheme, the mineral insulating layer is a ceramic silicon rubber composite belt, and the ceramic silicon rubber composite belt is divided into two layers.
The utility model discloses a theory of operation and beneficial effect do:
1. in the utility model, the outer side of the conductor is wrapped by the mineral insulating layer and the second insulating layer respectively, which can enhance the insulating property of the conductor, enhance the protection of the conductor, avoid electric leakage and connection, the second insulating layer comprises a crosslinked polyethylene layer and a crosslinked polyolefin layer, the crosslinked polyethylene layer has good electrical insulation effect, the crosslinked polyolefin layer has good flame retardant property, which is beneficial to improving the insulating property and flame retardant property of the cable, the protective sleeve plays a role in protecting the whole cable, the protective sleeve comprises an insulating layer and a low-smoke halogen-free sheath, the material of the insulating layer comprises glass fiber cloth and armor, the glass fiber cloth has the characteristics of good insulating property, strong heat resistance and good corrosion resistance, the mechanical strength is high, the armor can play an insulating role under flame, the filling layer is filled between the second insulating layer and the insulating layer, which can play a role in fixing and cable strength, in addition, the low-smoke halogen-free sheath does not contain halogen, halogen can generate hydrogen halide gas in the heating process and damage the respiratory tract of a fireman, and in addition, the low-smoke halogen-free sheath can not generate dense smoke in a fire disaster, so that the blurred vision of the fireman is avoided, and the fire fighting work is delayed. The utility model relates to a simply, rational in infrastructure, fire behavior and high temperature resistance can be high, can be able to bear or endure 1200 ℃ high temperature, and insulating properties and flame retardant property are good, and factor of safety is high, has stronger practicality.
2. The utility model discloses well conductor is 4, and forms by the copper wire transposition, is favorable to improving electric conductivity, and the good reliability.
3. The utility model discloses be provided with the latch along circumference on the outer wall of well second insulating layer, latch head and the tail on the second insulating layer in the 4 conductor outsides mesh in proper order, on the one hand, can avoid the cable to take place to become flexible under installation or long-term the use, make every conductor alternate segregation, the position changes, makes electric conductivity and security reduce, on the other hand, latch head and the tail on the 4 second insulating layers mesh in proper order, can increase the intensity of whole cable to increase the life of cable.
4. The utility model discloses be provided with 4 card edges on the inner wall of well insulating layer, the latch card that every second insulating layer is close to isolation layer one side is established on the card edge, be favorable to the position between fixed conductor and insulating layer and each conductor, and simultaneously, in the cable manufacture process, the packing of filling layer can cause the position of conductor to change, and the card edge sets up with the latch block, is favorable to avoiding the condition that the conductor position changes, thereby guarantee the holistic electric conductivity and the intensity of cable, the design is simple, therefore, the clothes hanger is strong in practicability.
5. The utility model discloses the outside of well low smoke and zero halogen sheath is provided with the enhancement layer, the enhancement layer includes first enhancement layer and second enhancement layer, can strengthen the intensity of cable, be provided with a plurality of first semi-circular archs on the inner wall of first enhancement layer, be provided with a plurality of semi-circular archs of second on the outer wall of second enhancement layer, first semi-circular arch and the crisscross setting of the semi-circular arch of second, be favorable to making the crisscross setting in space between first semi-circular arch and the semi-circular arch of second, be favorable to alleviateing the holistic quality of cable in the gaining in strength, the life and the security of reinforcing cable, high reliability.
6. The utility model discloses well second enhancement layer outside is provided with the waterproof layer, and the waterproof layer is favorable to strengthening the moisture resistance of cable, promotes the factor of safety that the cable used and the life of cable, and the good reliability.
7. The utility model discloses well mineral insulating layer is two-layer ceramic silicon rubber composite belt, is favorable to further strengthening the insulating properties of cable, reinforcing factor of safety.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of portion A of FIG. 1;
FIG. 3 is a schematic structural diagram of portion B of FIG. 1;
FIG. 4 is a schematic view of the structure of the reinforcing layer of the present invention;
in the figure: the insulation structure comprises a conductor 1, a mineral insulation layer 2, a second insulation layer 3, a protective sleeve 4, an insulation layer 41, a low-smoke halogen-free sheath 42, a filling layer 5, a latch 6, a clamping edge 7, a reinforcing layer 8, a first reinforcing layer 81, a second reinforcing layer 82, a first semicircular bulge 9, a second semicircular bulge 10 and a waterproof layer 11.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-4, the present invention provides a fireproof cable,
comprising a conductor 1 which is provided with a conductor,
a mineral insulating layer 2, the mineral insulating layer 2 is wrapped and arranged at the outer side of the conductor 1,
the second insulating layer 3, the second insulating layer 3 includes a crosslinked polyethylene layer and a crosslinked polyolefin layer, the crosslinked polyethylene layer is wrapped on the outer side of the mineral insulating layer 2, the crosslinked polyolefin layer is wrapped on the outer side of the crosslinked polyethylene layer,
protective sleeve 4, protective sleeve 4 comprises
a low-smoke halogen-free sheath 42, the low-smoke halogen-free sheath 42 is wrapped on the outer side of the insulating layer 41,
and the filling layer 5, wherein the filling layer 5 is arranged between the second insulating layer 3 and the isolation layer 41.
In this embodiment, the outer side of the conductor 1 is wrapped by the mineral insulating layer 2 and the second insulating layer 3 respectively, so as to enhance the insulating property of the conductor 1, protect the conductor 1, avoid electric leakage and connection, the second insulating layer 3 comprises a crosslinked polyethylene layer and a crosslinked polyolefin layer, the crosslinked polyethylene layer has a good electrical insulating effect, the crosslinked polyolefin layer has a good flame retardant property, so as to improve the insulating property and flame retardant property of the cable, the protective sleeve 4 protects the whole cable, the protective sleeve 4 comprises an insulating layer 41 and a low smoke zero halogen sheath 42, the insulating layer 41 is made of glass fiber cloth and armor, the glass fiber cloth has the characteristics of good insulating property, strong heat resistance and good corrosion resistance, the mechanical strength is high, the armor can play an insulating role under flame, the filling layer 5 is filled between the second insulating layer 3 and the insulating layer 41, can play fixed action and cable strength, in addition, do not contain halogen among the low smoke and zero halogen sheath 42, halogen can produce the hydrogen halide gas in the heating process to cause the damage to fireman's respiratory track, in addition, low smoke and zero halogen sheath 42 can not produce dense smoke in the conflagration, avoids fireman's blurred vision, delays fire control work. This embodiment design is simple, and is rational in infrastructure, and fire behavior and high temperature resistance are high, can be able to bear or endure 1200 ℃ high temperature, and insulating properties and flame retardant property are good, and factor of safety is high, has stronger practicality.
Further, the number of the conductors 1 is 4, and the conductors are formed by twisting copper wires.
In this embodiment, the number of the conductors 1 is 4, and the conductors are formed by twisting copper wires, so that the improvement of the conductivity is facilitated, and the reliability is high.
Furthermore, latch 6 is arranged on the outer wall of the second insulating layer 3 along the circumferential direction, and the latch 6 on the second insulating layer 3 outside the adjacent conductors 1 are meshed with each other.
Be provided with latch 6 along circumference on the outer wall of second insulating layer 3 in this embodiment, 6 end to end meshing of latch on the second insulating layer 3 in the 4 conductors 1 outside in proper order, on the one hand, can avoid the cable to take place to become flexible under installation or long-term the use, make every conductor 1 alternate segregation, the position changes, make electric conductivity and security reduce, on the other hand, 6 end to end meshing of latch on 4 second insulating layers 3 in proper order, can increase the intensity of whole cable, thereby increase the life of cable.
Furthermore, the inner wall of the insulating layer 41 is provided with 4 clamping edges 7, and the clamping teeth 6 on one side of each second insulating layer 3 close to the insulating layer 41 are clamped on the clamping edges 7.
Be provided with 4 card edges 7 on the inner wall of insulating layer 41 in this embodiment, 6 cards of latch that every second insulating layer 3 is close to insulating layer one side are established on card edge 7, be favorable to fixed conductor 1 and insulating layer 41 and each conductor position between 1, and simultaneously, in the cable manufacturing process, the packing of filling layer 5 can cause the position of conductor 1 to change, and the card sets up with 6 blocks of latch along 7, be favorable to avoiding the condition that conductor 1 position changes, thereby guarantee holistic electric conductivity and intensity of cable, the design is simple, therefore, the clothes hanger is strong in practicability.
Further, the outside of low smoke and zero halogen sheath 42 is provided with the enhancement layer 8, and the enhancement layer 8 includes first enhancement layer 81 and second enhancement layer 82, and second enhancement layer 82 sets up in the outside of first enhancement layer 81, is provided with a plurality of first semicircular protrusions 9 on the inner wall of first enhancement layer 81, is provided with a plurality of second semicircular protrusions 10 on the outer wall of second enhancement layer 82, and first semicircular protrusions 9 and the crisscross setting of second semicircular protrusions 10.
The outside of low smoke and zero halogen sheath 42 in this embodiment is provided with enhancement layer 8, enhancement layer 8 includes first enhancement layer 81 and second enhancement layer 82, can strengthen the intensity of cable, be provided with a plurality of first semi-circular archs 9 on the inner wall of first enhancement layer 81, be provided with a plurality of semi-circular archs 10 of second on the outer wall of second enhancement layer 82, first semi-circular archs 9 and the crisscross setting of the semi-circular arch 10 of second, be favorable to making the crisscross setting in space between first semi-circular archs 9 and the semi-circular arch 10 of second, be favorable to alleviateing the holistic quality of cable in the time of gaining in strength, the life and the security of reinforcing cable, high.
Further, a waterproof layer 11 is provided outside the second reinforcing layer 82.
In this embodiment, the waterproof layer 11 is arranged on the outer side of the second reinforcing layer 82, and the waterproof layer 11 is favorable for enhancing the moisture-proof performance of the cable, so that the safety factor of the cable and the service life of the cable are improved, and the reliability is high.
Further, the mineral insulating layer 2 is a ceramic silicone rubber composite tape, and the ceramic silicone rubber composite tape is two layers.
In the embodiment, the mineral insulating layer 2 is a two-layer ceramic silicon rubber composite belt, which is beneficial to further enhancing the insulating property of the cable and enhancing the safety factor.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A fireproof cable, characterized in that it comprises a conductor (1),
a mineral insulating layer (2), wherein the mineral insulating layer (2) is wrapped on the outer side of the conductor (1),
the second insulating layer (3), the second insulating layer (3) includes crosslinked polyethylene layer and crosslinked polyolefin layer, the crosslinked polyethylene layer parcel sets up the outside of mineral insulating layer (2), the crosslinked polyolefin layer parcel sets up the crosslinked polyethylene layer outside,
a protective sheath (4), the protective sheath (4) comprising
An insulating layer (41), wherein the insulating layer (41) comprises a glass fiber cloth layer and an armor layer, the armor layer is wrapped and arranged on the outer side of the glass fiber cloth layer, the glass fiber cloth layer is arranged on the outer side of the second insulating layer (3), and
a low-smoke halogen-free sheath (42), the low-smoke halogen-free sheath (42) is wrapped on the outer side of the isolation layer (41),
a filler layer (5), the filler layer (5) being disposed between the second insulating layer (3) and the insulating layer (41).
2. A fire-resistant cable according to claim 1, characterised in that said conductors (1) are 4 and are each formed by copper wires stranded.
3. A fire protection cable according to claim 2, wherein the second insulating layer (3) is provided with latch teeth (6) on its outer wall in the circumferential direction, and the latch teeth (6) on the second insulating layer (3) adjacent to the outer side of the conductor (1) are engaged with each other.
4. A fireproof cable according to claim 3, wherein the inner wall of the insulating layer (41) is provided with 4 locking edges (7), and each locking tooth (6) on the side of the second insulating layer (3) close to the insulating layer (41) is locked on the locking edge (7).
5. A fireproof cable according to claim 1, wherein the outside of the low smoke zero halogen sheath (42) is provided with a reinforcing layer (8), the reinforcing layer (8) comprises a first reinforcing layer (81) and a second reinforcing layer (82), the second reinforcing layer (82) is arranged on the outside of the first reinforcing layer (81), the inner wall of the first reinforcing layer (81) is provided with a plurality of first semicircular bulges (9), the outer wall of the second reinforcing layer (82) is provided with a plurality of second semicircular bulges (10), and the first semicircular bulges (9) and the second semicircular bulges (10) are arranged in a staggered manner.
6. A fire protection cable according to claim 5, wherein a waterproof layer (11) is provided on the outside of the second reinforcing layer (82).
7. A fire-resistant cable according to claim 1, characterised in that said mineral insulating layer (2) is a ceramic silicone rubber composite tape, said ceramic silicone rubber composite tape being in two layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920510465.XU CN210640007U (en) | 2019-04-15 | 2019-04-15 | Fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920510465.XU CN210640007U (en) | 2019-04-15 | 2019-04-15 | Fireproof cable |
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| Publication Number | Publication Date |
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| CN210640007U true CN210640007U (en) | 2020-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920510465.XU Active CN210640007U (en) | 2019-04-15 | 2019-04-15 | Fireproof cable |
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| CN (1) | CN210640007U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113192677A (en) * | 2021-05-06 | 2021-07-30 | 安徽电缆股份有限公司 | High-strength composite cable for ships |
-
2019
- 2019-04-15 CN CN201920510465.XU patent/CN210640007U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113192677A (en) * | 2021-05-06 | 2021-07-30 | 安徽电缆股份有限公司 | High-strength composite cable for ships |
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