CN211654409U - Cloth electric wire with high fire-proof performance - Google Patents
Cloth electric wire with high fire-proof performance Download PDFInfo
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- CN211654409U CN211654409U CN201922160079.5U CN201922160079U CN211654409U CN 211654409 U CN211654409 U CN 211654409U CN 201922160079 U CN201922160079 U CN 201922160079U CN 211654409 U CN211654409 U CN 211654409U
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- hollow
- sinle silk
- hollow circular
- double
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- 239000004744 fabric Substances 0.000 title claims abstract description 11
- 230000009970 fire resistant effect Effects 0.000 claims abstract description 18
- 229920000098 polyolefin Polymers 0.000 claims abstract description 18
- 239000000779 smoke Substances 0.000 claims abstract description 18
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 17
- 229920000642 polymer Polymers 0.000 claims abstract description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000919 ceramic Substances 0.000 claims abstract description 13
- 238000005253 cladding Methods 0.000 claims abstract description 13
- 239000002131 composite material Substances 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 239000003365 glass fiber Substances 0.000 claims abstract description 11
- 239000010445 mica Substances 0.000 claims abstract description 11
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- 239000004411 aluminium Substances 0.000 claims abstract 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 230000004888 barrier function Effects 0.000 claims description 14
- 229910052736 halogen Inorganic materials 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 150000002367 halogens Chemical class 0.000 claims description 13
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 9
- 239000003063 flame retardant Substances 0.000 claims description 9
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 239000004718 silane crosslinked polyethylene Substances 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 238000009429 electrical wiring Methods 0.000 claims 5
- 230000017105 transposition Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 91
- 230000000694 effects Effects 0.000 description 8
- 239000004945 silicone rubber Substances 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 5
- 239000004020 conductor Substances 0.000 description 5
- 231100000331 toxic Toxicity 0.000 description 4
- 230000002588 toxic effect Effects 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 238000005267 amalgamation Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
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Classifications
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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
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- Insulated Conductors (AREA)
Abstract
The utility model discloses a cloth electric wire with high fire proofness, including sinle silk skeleton and three sinle silks, sinle silk skeleton comprises a hollow circular body and three hollow oval bodys, three hollow oval bodys use hollow circular body to be the circumference array distribution as the center, three sinle silks are located respectively in three hollow oval bodys, the outer cladding of sinle silk has the insulating layer, the outer cladding of insulating layer has the aluminium silk shielding layer, be equipped with the cooling tube in the hollow circular body, be equipped with first filling layer between cooling tube and the hollow circular body, sinle silk skeleton is equipped with annular ceramic polymer composite fire-resistant silicon rubber layer outward, be equipped with the second filling layer between ceramic polymer composite fire-resistant silicon rubber layer and the sinle silk skeleton, the outer cladding in proper order of ceramic polymer composite fire-resistant silicon rubber layer or winding have double-layer mica area, inner liner, copper wire shielding layer, Double-layer glass fiber tapes and low-smoke halogen-free polyolefin layers.
Description
Technical Field
The utility model relates to a power cable technical field, especially a cloth electric wire with high fire proofness.
Background
In modern life, wires and cables are indispensable, however, fire disasters caused by the wires and cables are indispensable, incomplete statistics is carried out, one third of people died due to the fire disasters caused by the wires and cables are suffocated and died due to the fact that halogen-containing toxic smoke released when the wires and cables are burnt is inhaled, and meanwhile, the smoke brings great obstruction to rescue work, so that the fire disasters caused by the wires and cables cannot be ignored.
In addition, when a fire breaks out, the traditional electric wire and cable cannot be burnt and limited in a local range due to insufficient fire resistance and fire resistance, and once the traditional electric wire and cable is spread, other equipment can be affected, so that larger loss is caused. And the materials used by the traditional electric wire and cable have flame retardant cloth as the fireproof material, and the flame retardant cloth is generally made of halogen-free or low-halogen flame retardant materials, so that the heat dissipation of the cable is a great problem.
SUMMERY OF THE UTILITY MODEL
For solving the problem that exists among the prior art, the utility model provides a cloth electric wire with high fire proofness.
The utility model adopts the technical proposal that:
a cloth electric wire with high fire resistance comprises a wire core framework and three wire cores, wherein the wire core framework comprises a hollow circular tube body and three hollow elliptical tube bodies, the three hollow elliptical tube bodies are distributed in a circumferential array mode by taking the hollow circular tube body as a center, the part of one end part of the cross section of each hollow elliptical tube body is cut off from the cross section of each hollow circular tube body, the three wire cores are respectively arranged in the three hollow elliptical tube bodies, the diameter of each wire core is equal to the length of the short axis of each hollow elliptical tube body, each wire core is formed by embedding and twisting a plurality of corrugated monofilaments, an insulating layer is coated outside each wire core, an aluminum wire shielding layer is coated outside each insulating layer, a cooling pipe is arranged in each hollow circular tube body, a first filling layer is arranged between each cooling pipe and each hollow circular tube body, and an annular ceramic high-polymer composite fire-resistant silicon rubber layer is arranged, be equipped with the second filling layer between compound fire-resistant silicone rubber layer of pottery polymer and the sinle silk skeleton, the compound fire-resistant silicone rubber layer of pottery polymer twines outward and has double-deck mica tape, the outer cladding of double-deck mica tape has the inner liner, the outer cladding of inner liner has the copper wire shielding layer, the outer cladding of copper wire shielding layer has at a distance from the oxygen layer, it has double-deck glass fiber area to separate the outer winding of oxygen layer, the outer cladding of double-deck glass fiber area has low smoke and zero halogen polyolefin layer.
Preferably, the insulating layer is made of silane crosslinked polyethylene.
Preferably, the wire core skeleton is a polyurethane elastomer.
Preferably, the first filling layer and the second filling layer are both water-blocking yarns.
Preferably, the lining layer is made of PE.
Preferably, the oxygen barrier layer is a flame retardant polyolefin oxygen barrier layer.
Preferably, one half of the low smoke zero halogen polyolefin layer is semicircular, and the other half of the low smoke zero halogen polyolefin layer is rectangular.
The utility model has the advantages that:
1. the sinle silk skeleton can effectively protect the sinle silk, avoid the sinle silk to receive the extrusion damage, and the sinle silk skeleton adopts the polyurethane elastomer, its performance is between plastics and rubber, resistant oil, it is wear-resisting, low temperature resistant, it is ageing-resistant, hardness is high, it is elastic, hollow oval body is when the pressurized deformation takes place, its minor axis length can lengthen on the contrary, can increase the activity space of sinle silk, avoid the sinle silk impaired, when arbitrary hollow oval body pressurized, the homoenergetic shares pressure to two other hollow oval bodys through hollow circular body, make the three pressurized jointly, reduce deformation, and hollow circular body can also increase the intensity of whole sinle silk skeleton.
2. The ceramic polymer composite fire-resistant silicone rubber layer is formed into a hard ceramic object after being burnt, and has strong tensile strength and fire-resistant and high-temperature-resistant characteristics, so that the cable still has enough mechanical strength for continuous normal use before replacement even after other outer protective layers are completely damaged;
3. the double-layer mica tape and the double-layer glass fiber tape have good flame-retardant and heat-insulating effects, form an inner layer barrier, a middle layer barrier and an outer layer barrier with the ceramic high-polymer composite fire-resistant silicon rubber layer, and are assisted by the oxygen-insulating layer, so that the fire resistance and the flame retardance of the wire are greatly improved;
4. the aluminum wire shielding layer is arranged outside each wire core, and then the copper wire shielding layers are arranged outside all the wire cores until the double-layer shielding effect is achieved, so that the electromagnetic shielding performance of the electric wire is greatly improved;
5. the second filling layer is made of water-blocking yarns, so that the water-proof performance of the electric wire can be enhanced, and the electric wire has the effect of preventing water and fire;
6. when the temperature of the wire is too high, a cooling medium is introduced into the cooling pipe, so that the rapid heat dissipation of the wire is realized, and the first filling layer adopts the water-blocking yarns to ensure that the liquid medium in the cooling pipe does not influence the wire;
7. the low-smoke halogen-free polyolefin layer prevents a large amount of halogen-containing toxic smoke from being generated in a fire;
8. the aluminum wire shielding layer, the filling layer, the double-layer mica tape, the inner liner layer, the copper wire shielding layer, the oxygen isolation layer, the double-layer glass fiber tape and the low-smoke halogen-free polyolefin layer are complemented, so that the cable has excellent flame retardance, fire resistance, high temperature resistance, waterproofness, corrosion resistance and electromagnetic shielding property;
9. half of low smoke and zero halogen polyolefin layer is the rectangle, makes it have a plane, and the electric wire directly pastes the wall when being convenient for install, and the laminating dynamics is big, and easy flare-out, simple to operate, and rectangle and semi-circular amalgamation can not produce the recess between electric wire and wall body, lead to the deposition, are convenient for clear up the electric wire.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a wire core in an embodiment of the present invention;
reference numerals: 10. the composite tube comprises a hollow round tube body, 11, a hollow oval tube body, 12, a wire core, 13, an insulating layer, 14, an aluminum wire shielding layer, 15, a cooling tube, 16, a first filling layer, 17, a second filling layer, 18, a conductor, 19, a fiber rope, 20, a ceramic high-molecular composite fire-resistant silicon rubber layer, 30, a double-layer mica tape, 40, an inner liner layer, 50, a copper wire shielding layer, 60, an oxygen isolation layer, 70, a double-layer glass fiber tape, and 80, a low-smoke halogen-free polyolefin layer.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Examples
As shown in fig. 1 and 2, a cloth electric wire with high fire resistance comprises a wire core framework and three wire cores 12, wherein the wire core framework comprises a hollow circular tube body 10 and three hollow elliptical tube bodies 11, the three hollow elliptical tube bodies 11 are distributed in a circumferential array mode by taking the hollow circular tube body 10 as a center, the part of one end part of the cross section of each hollow elliptical tube body 11 is cut off from the cross section of the hollow circular tube body 10, the three wire cores 12 are respectively arranged in the three hollow elliptical tube bodies 11, the diameter of each wire core 12 is equal to the length of the minor axis of each hollow elliptical tube body 11, each wire core 12 is formed by inlaying and twisting a plurality of corrugated monofilaments, an insulating layer 13 is coated outside each wire core 12, an aluminum wire shielding layer 14 is coated outside each insulating layer 13, a cooling pipe 15 is arranged in each hollow circular tube body 10, a first filling layer 16 is arranged between each cooling pipe 15 and each hollow circular tube body 10, the utility model discloses a cable core, including the sinle silk skeleton, be equipped with the compound fire-resistant silicone rubber layer of annular pottery polymer 20 outward, be equipped with second filling layer 17 between compound fire-resistant silicone rubber layer of pottery polymer 20 and the sinle silk skeleton, the compound fire-resistant silicone rubber layer of pottery polymer 20 twines outward has double-deck mica tape 30, the outer cladding of double-deck mica tape 30 has inner liner 40, the outer cladding of inner liner 40 has copper wire shielding layer 50, the outer cladding of copper wire shielding layer 50 has oxygen layer 60 that separates, it has double-deck glass fiber tape 70 to separate the outer winding of oxygen layer 60, the outer cladding of double-deck glass fiber tape 70 has zero halogen low cigarette polyolefin layer.
Sinle silk skeleton can effectively protect sinle silk 12, avoid sinle silk 12 to receive the extrusion damage, hollow oval body is when the pressurized emergence is out of shape, its minor axis length can lengthen on the contrary, can increase sinle silk 12's activity space, avoid sinle silk 12 impaired, when arbitrary hollow oval body pressurized, the homoenergetic is shared pressure to two other hollow oval bodys through hollow circular body 10, make the three pressurized jointly, reduce out of shape, and hollow circular body 10 can also increase the intensity of whole sinle silk skeleton.
The core 12 may be formed by twisting a plurality of mutually insulated conductors 18 as required, with a fiber rope 19 disposed between each conductor 18 to improve the tensile strength of the core 12. Each conductor 18 can be formed by inlaying and twisting a plurality of corrugated monofilaments, the conductor 18 is made of rare earth high-iron aluminum alloy, replaces the traditional copper material, has the characteristics of creep resistance, high flexibility, strong extensibility and low rebound, under the same current-carrying capacity, the weight of the required rare earth high-iron aluminum alloy is about half of that of copper, and the price of the rare earth high-iron aluminum alloy is about one third of that of copper, so that the weight of the cable is lighter and the cost of the cable is lower.
When the temperature of the wiring is too high, a cooling medium is introduced into the cooling pipe 15, so that the rapid heat dissipation of the wiring is realized.
The ceramic polymer composite fire-resistant silicone rubber layer 20 is formed into a hard ceramic-like object after combustion, and has strong tensile strength and fire-resistant and high-temperature-resistant characteristics, so that the cable still has enough mechanical strength for continuous normal use before replacement even after other outer protective layers are completely damaged.
The double-layer mica tape 30 and the double-layer glass fiber tape 70 have good flame-retardant and heat-insulation effects, form an inner barrier, a middle barrier and an outer barrier with the ceramic high-polymer composite fireproof silicone rubber layer 20, and are assisted by the oxygen-insulating layer 60, so that the fire resistance and the flame retardance of the electric wire are greatly improved.
By arranging the aluminum wire shielding layer 14 outside each wire core 12 and then arranging the copper wire shielding layers 50 outside all the wire cores 12, the electromagnetic shielding performance of the electric wire is greatly improved until double-layer shielding is applied.
The low smoke halogen-free polyolefin layer 80 prevents the generation of a large amount of halogen-containing toxic fumes from a fire.
In one embodiment, the insulating layer 13 is made of silane crosslinked polyethylene. Compared with the traditional polyvinyl chloride, the silane crosslinked polyethylene has the characteristics of low smoke and zero halogen, has better fire resistance and longer service life, and can prevent a large amount of halogen-containing toxic smoke from being generated in fire.
In one embodiment, the core skeleton is a polyurethane elastomer. The cable core framework is made of polyurethane elastomer, the performance of the polyurethane elastomer is between that of plastic and rubber, and the polyurethane elastomer is resistant to oil, abrasion, low temperature and aging, high in hardness and elastic, not only resists pressure, but also can recover deformation when the pressure disappears. When the circuit needs to be modified after the electric wire is bent and installed, the elasticity of the wire core framework can enable the wire core framework to recover the initial state, the electric wire is convenient to install again, and time and labor are not required to be wasted, and the electric wire is straightened.
In one embodiment, the first and second filling layers 16 and 17 are each water-blocking yarns.
The water-blocking yarn is selected for the first filling layer 16 to ensure that the liquid medium in the cooling tube 15 does not affect the electric wire,
the second filling layer 17 is made of water-blocking yarns, and the waterproof performance of the electric wire can be enhanced, so that the electric wire has the effect of preventing water and fire.
In one embodiment, the lining layer 40 is made of PE. When the lining layer 40 is extruded, corresponding grooves are formed in the periphery of the lining layer to synchronously embed the copper wire shielding layer 50, so that the shielding function is enhanced, the structural strength is further improved, the production links are reduced, and the production cost is reduced.
In one embodiment, the oxygen barrier layer 60 is a flame retardant polyolefin oxygen barrier layer 60. The flame retardant polyolefin oxygen barrier layer 60 can further provide flame retardancy to the cable, and has good oxygen barrier effect to prevent oxidation aging of the inner layer.
In one embodiment, half of the low smoke zero halogen polyolefin layer 80 is semicircular and the other half is rectangular. Half of low smoke and zero halogen polyolefin layer 80 is the rectangle, makes it have a plane, and the electric wire directly pastes the wall when being convenient for install, and the laminating dynamics is big, straightens easily, simple to operate, and rectangle and semi-circular amalgamation can not produce the recess between electric wire and wall body, lead to the deposition, are convenient for clear up the electric wire.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (7)
1. The utility model provides a cloth electric wire with high fire resistance, a serial communication port, including sinle silk skeleton and three sinle silks (12), sinle silk skeleton comprises a hollow circular body (10) and three hollow oval body (11), three hollow oval body (11) are circumference array distribution with hollow circular body (10) as the center, and three the part of the tip of the cross section of hollow oval body (11) is cut by the cross section of hollow circular body (10), three sinle silk (12) are located respectively in three hollow oval body (11), just the diameter of sinle silk (12) equals with the minor axis length of hollow oval body (11), sinle silk (12) are inlayed the transposition by many corrugated monofilaments and are formed, sinle silk (12) outer cladding has insulating layer (13), insulating layer (13) outer cladding has aluminium silk shielding layer (14), a cooling pipe (15) is arranged in the hollow circular pipe body (10), a first filling layer (16) is arranged between the cooling pipe (15) and the hollow circular pipe body (10), an annular ceramic polymer composite fire-resistant silicon rubber layer (20) is arranged outside the wire core framework, a second filling layer (17) is arranged between the ceramic polymer composite fire-resistant silicon rubber layer (20) and the core framework, a double-layer mica tape (30) is wound outside the ceramic polymer composite fire-resistant silicon rubber layer (20), an inner liner (40) is coated outside the double-layer mica tape (30), a copper wire shielding layer (50) is coated outside the inner liner (40), an oxygen-isolating layer (60) is coated outside the copper wire shielding layer (50), a double-layer glass fiber belt (70) is wound outside the oxygen-isolating layer (60), the double-layer glass fiber belt (70) is coated with a low-smoke halogen-free polyolefin layer (80).
2. The electrical wiring with high fire-proof property according to claim 1, wherein the insulating layer (13) is made of silane crosslinked polyethylene.
3. The electrical wiring with high fire resistance according to claim 2, wherein the core frame is a polyurethane elastomer.
4. The electrical wiring with high fire-retardancy according to claim 3, wherein the first filling layer (16) and the second filling layer (17) are each a water-blocking yarn.
5. The electrical wiring with high fire-proof property according to claim 4, wherein the inner liner layer (40) is PE material.
6. The electrical wiring with high fire resistance according to claim 5, wherein the oxygen barrier layer (60) is a flame retardant polyolefin oxygen barrier layer (60).
7. The electrical cloth wire with high fire resistance according to claim 6, wherein one half of the low smoke zero halogen polyolefin layer (80) is semicircular and the other half is rectangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922160079.5U CN211654409U (en) | 2019-12-05 | 2019-12-05 | Cloth electric wire with high fire-proof performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922160079.5U CN211654409U (en) | 2019-12-05 | 2019-12-05 | Cloth electric wire with high fire-proof performance |
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| Publication Number | Publication Date |
|---|---|
| CN211654409U true CN211654409U (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922160079.5U Expired - Fee Related CN211654409U (en) | 2019-12-05 | 2019-12-05 | Cloth electric wire with high fire-proof performance |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117612782A (en) * | 2023-11-24 | 2024-02-27 | 江苏致信电气科技有限公司 | A medium voltage fire-resistant control cable |
-
2019
- 2019-12-05 CN CN201922160079.5U patent/CN211654409U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117612782A (en) * | 2023-11-24 | 2024-02-27 | 江苏致信电气科技有限公司 | A medium voltage fire-resistant control cable |
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