CN214253948U - Energy-saving environment-friendly high-flame-retardant fire-resistant medium-voltage cable - Google Patents
Energy-saving environment-friendly high-flame-retardant fire-resistant medium-voltage cable Download PDFInfo
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- CN214253948U CN214253948U CN202022024227.3U CN202022024227U CN214253948U CN 214253948 U CN214253948 U CN 214253948U CN 202022024227 U CN202022024227 U CN 202022024227U CN 214253948 U CN214253948 U CN 214253948U
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 42
- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 25
- 238000011049 filling Methods 0.000 claims abstract description 27
- 238000005187 foaming Methods 0.000 claims abstract description 20
- 239000000919 ceramic Substances 0.000 claims abstract description 11
- 239000003365 glass fiber Substances 0.000 claims description 24
- 229920000098 polyolefin Polymers 0.000 claims description 22
- 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 20
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 13
- 230000002265 prevention Effects 0.000 claims description 9
- 239000004743 Polypropylene Substances 0.000 claims description 8
- 239000013307 optical fiber Substances 0.000 claims description 8
- -1 polypropylene Polymers 0.000 claims description 8
- 229920001155 polypropylene Polymers 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910021389 graphene Inorganic materials 0.000 claims description 6
- 239000000779 smoke Substances 0.000 claims description 6
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 5
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 241000561734 Celosia cristata Species 0.000 claims description 2
- 210000001520 comb Anatomy 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 239000000835 fiber Substances 0.000 abstract description 2
- 229920002379 silicone rubber Polymers 0.000 abstract description 2
- 238000009529 body temperature measurement Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 abstract 1
- 239000004020 conductor Substances 0.000 description 15
- 239000000945 filler Substances 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 229910052736 halogen Inorganic materials 0.000 description 4
- 150000002367 halogens Chemical class 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000002341 toxic gas Substances 0.000 description 3
- 238000013024 troubleshooting Methods 0.000 description 3
- 239000004927 clay Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses an energy-concerving and environment-protective high fire-retardant fire-resistant medium voltage cable, including two liang of tangent a plurality of electrically conductive cables, two liang of adjacent it has fan-shaped foaming to fill strip, a plurality of all to inlay in the outside clearance of electrically conductive cable the inside of fan-shaped foaming filling strip has all inlayed the built-in wire rope of filling strip. The utility model discloses in, at normal atmospheric temperature, it is low to compare the inside thermal resistance of current fire-resistant medium voltage cable, and the cable heat dissipation is fast, and the power loss is few. Under the condition of fire, the internal thermal resistance of the cable is increased, an external heat source is effectively isolated, and the fire resistance of the cable is improved. The manufacturing cost of the cable is fully considered, the cost is about 3% lower than that of the existing fire-resistant medium-voltage cable taking ceramic silicon rubber or ceramic fiber bags as fire-resistant layers, and the structure is stable; the cable takes the requirements of drop height in high-rise buildings, pipe galleries and tunnels into consideration, and improves the self-bearing capacity of the cable; for can effectually monitoring the normal use condition of cable, this patent cable has set up the temperature measurement structure.
Description
Technical Field
The utility model relates to a high fire-retardant fire-resistant medium voltage cable, the (6-35kV) power supply and distribution system of fire-retardant fire-resistant requirement in specially adapted high-rise building, piping lane, high drop tunnel.
Background
With the increasing requirements of the whole society on energy conservation and environmental protection, various characteristics of a power supply main loop, namely a medium-voltage (6-35kV) cable, are required to be higher and higher in occasions such as high-rise buildings, long-distance pipe galleries, tunnels, subways and the like, namely, the cable is required to have good flame-retardant and fire-resistant characteristics and also has good energy conservation and environmental protection characteristics. The fire-resistant medium-voltage cable adopts an insulation system of an inner screen, insulation and an outer shield, so that the fire-resistant structure can only be arranged outside the insulation layer in order to ensure the inherent insulativity and electric field balance compared with a low-voltage fire-resistant cable. In order to ensure that the cable can work continuously under the firing of flame, the fire-resistant structure layer is mostly provided with a heat-insulating and flame-retardant structure (such as a ceramic fiber layer, a glass fiber layer, ceramic silicon rubber, a low-smoke halogen-free flame-retardant oxygen-insulating layer and the like).
The existence of thermal-insulated fire-retardant structure has hindered the thermal giveaway of cable normal use, the heat gathering is in the insulating layer, arouse the conductor temperature rise, conductor resistance increases, electric energy loss is big, simultaneously because thermal gathering, the inside temperature rise of cable can't monitor again, it is fast to arouse insulating shielding accelerated ageing, seriously influence cable life, simultaneously again because using in sealed occasion, the strict control heat release is crucial to the safety of fire control, the current fire-retardant fire-resistant medium voltage cable in market is because the external diameter is big at present, the combustible substance is many, heat release is high.
For a high-fall environment, the existing cable is mostly supported and pulled in a steel wire armoring mode, but a fireproof isolation layer of a fireproof medium-voltage cable is thick, the steel wire armoring layer cannot well transmit pulling force to the interior of the cable when bearing the pulling force, and the fireproof isolation layer is easily broken, so that the supported fall is small.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing an energy-saving, environment-friendly and high-flame-retardant fire-resistant medium-voltage cable.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an energy-saving, environment-friendly, high-flame-retardant and fire-resistant medium-voltage cable comprises a plurality of tangent conductive cables, fan-shaped foaming filling strips are filled in gaps at the outer sides of the adjacent conductive cables, steel wire ropes with built-in filling strips are inlaid in the fan-shaped foaming filling strips, second glass fiber layers are arranged at the outer sides of the fan-shaped foaming filling strips, the inner side of the second glass fiber layer is filled with flame-retardant polypropylene filling ropes, the outer side of the second glass fiber layer is covered with ceramic polyolefin, the outer side of the ceramic polyolefin is provided with a first glass fiber layer, the inner side of the first glass fiber layer is filled with fireproof mud, the outer side of the first glass fiber layer is wound with a steel wire armor, the outer side of the steel wire armor is covered with a wrapping reinforcing layer, and the outer side of the wrapping reinforcing layer is wrapped with a high-flame-retardant outer sheath.
As a further description of the above technical solution:
the conductive cable comprises a conductive core, an inner semi-conductive shielding layer covers the outer side of the conductive core, and an outer semi-conductive shielding layer is arranged on the outer side of the inner semi-conductive shielding layer.
As a further description of the above technical solution:
an XLPE insulating layer is filled between the outer semi-conductive shielding layer and the inner semi-conductive shielding layer, and distributed optical fibers are arranged in the centers of the plurality of conductive cables.
As a further description of the above technical solution:
the conductive core is made of copper or aluminum, the conductive core monofilament adopts a trapezoidal structure, the inner semi-conductive shielding layer and the outer semi-conductive shielding layer are made of graphene materials, and the thickness of the inner semi-conductive shielding layer and the thickness of the outer semi-conductive shielding layer are 0.6-0.8 mm.
As a further description of the above technical solution:
the outer side of the ceramic polyolefin is in a sawtooth shape, and the fireproof mud is filled between the outer sawtooth of the ceramic polyolefin and the first glass fiber layer.
As a further description of the above technical solution:
the fan-shaped foaming filling strips and the flame-retardant polypropylene filling ropes are both low-smoke halogen-free flame-retardant materials.
The utility model discloses following beneficial effect has:
when the energy-saving environment-friendly high-flame-retardant fire-resistant medium-voltage cable is used, the high-flame-retardant outer sheath, the wrapping reinforced layer, the steel wire armor, the first glass fiber layer, the fire-resistant mud, the ceramic polyolefin, the second glass fiber layer, the flame-retardant polypropylene filling rope, the filling strip built-in steel wire rope, the fan-shaped foaming filling strip, the conductive cable, the distributed optical fiber, the outer semi-conductive shielding layer, the inner semi-conductive shielding layer, the XLPE insulating layer and the conductive core are arranged, the conductive core is made of copper or aluminum, the single wires of the conductive core are in a trapezoidal structure, the annealing degree of the single wires is deepened (the elongation rate is up to 35 percent), the conductor filling coefficient is designed and improved to 99 to 99.6 percent, the purposes of reducing the single wire resistivity and reducing the contact resistance between the single wires are achieved, thereby improving the conductive capacity of the conductor (reducing resistance heat) and reducing the outer diameter of the conductor (facilitating heat dissipation), and laying a foundation for reducing the loss of the conductor; the novel inner and outer semi-conductive shielding layers made of graphene materials are used as inner and outer shields (with the thickness of 0.6-0.8mm) of the cable, so that the thermal stability of the cable is improved, the service life of the cable is ensured, and the continuous power supply capacity of the cable at high temperature is ensured; meanwhile, the distributed optical fiber is arranged in the center of the conductive cable, so that the real-time temperature of the conductive cable is monitored, and troubleshooting is facilitated; for the occasion that needs bear pulling force, except that adopt the steel wire armor outside the flame retardant coating (pottery polyolefin plus fire clay), this patent provides bigger pulling force through the built-in wire rope of filler strip that sets up in the inside of fan-shaped foaming filler strip, forms cable hank and frictional force through fan-shaped foaming filler strip and conductor cable. The steel wire armor and the steel wire ropes arranged in the filler strips form a tensile system, and the cable can bear the weight of the cable in the length of nearly one hundred meters; the outer sheath is made of halogen-free low-smoke flame-retardant polyolefin sheath material, and the contents of halogen and N, S in the cable are strictly controlled to reduce the discharge amount of toxic gases, so that the environment-friendly property of the cable during combustion is achieved.
Drawings
Fig. 1 is a front view of the present invention;
fig. 2 is a schematic structural view of the conductive cable of the present invention;
fig. 3 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.
Illustration of the drawings:
1. a high flame retardant outer jacket; 2. wrapping a reinforcing layer; 3. steel wire armoring; 4. a first fiberglass layer; 5. fire-proof mud; 6. ceramicized polyolefin; 7. a second fiberglass layer; 8. a flame retardant polypropylene filled rope; 9. the steel wire rope is arranged in the filling strip; 10. a fan-shaped foaming filling strip; 11. a conductive cable; 12. a distributed optical fiber; 13. an outer semiconductive shield layer; 14. an inner semiconductive shield layer; 15. an XLPE insulating layer; 16. a conductive core.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in 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 work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, the present invention provides an embodiment: the utility model provides an energy-concerving and environment-protective high fire-retardant fire-resistant medium voltage cable, includes two liang of tangent a plurality of electrically conductive cables 11, its characterized in that: all there is fan-shaped foaming filler strip 10 in two liang of adjacent conductive cables 11's the outside clearance, the inside of a plurality of fan-shaped foaming filler strips 10 is all inlayed and is had filler strip built-in wire rope 9, the outside of a plurality of fan-shaped foaming filler strips 10 is provided with second glass fiber layer 7, the inboard packing of second glass fiber layer 7 has fire-retardant polypropylene filling rope 8, the outside of second glass fiber layer 7 covers there is porcelainized polyolefin 6, porcelainized polyolefin 6's the outside is provided with first glass fiber layer 4, the inboard packing of first glass fiber layer 4 has fire prevention mud 5, the outside winding of first glass fiber layer 4 has steel wire armor 3, the outside of steel wire armor 3 covers and has around package enhancement layer 2, the outside parcel around package enhancement layer 2 has high fire-retardant oversheath 1.
The conductive cable 11 comprises a conductive core 16, an inner semi-conductive shielding layer 14 covers the outer side of the conductive core 16, and an outer semi-conductive shielding layer 13 is arranged on the outer side of the inner semi-conductive shielding layer 14; an XLPE insulating layer 15 is filled between the outer semi-conductive shielding layer 13 and the inner semi-conductive shielding layer 14, distributed optical fibers 12 are arranged at the centers of the plurality of conductive cables 11, and the distributed optical fibers 12 arranged at the centers of the conductive cables 11 monitor the real-time temperature of the conductive cables 11, so that troubleshooting is facilitated; the conductive core 16 is made of copper or aluminum, the single wires of the conductive core 16 adopt a special-shaped trapezoidal structure, the inner semi-conductive shielding layer 14 and the outer semi-conductive shielding layer 13 are made of graphene materials, the thickness of the inner semi-conductive shielding layer and the outer semi-conductive shielding layer is 0.6-0.8mm, the conductive core 16 is made of copper or aluminum, the single wires of the conductive core 16 adopt a trapezoidal structure, the annealing degree of the single wires is deepened to reach 35% of the elongation, the filling coefficient of the conductor is designed and improved to 99% -99.6%, the purposes of reducing the resistivity of the single wires and reducing the contact resistance between the single wires are achieved, thereby improving the conductive capability of the conductor, reducing the resistance heat and reducing the outer diameter of the conductor, facilitating the heat dissipation, laying a foundation for reducing the loss of the conductor, adopting the inner and outer semi-conductive shielding layers 13 of novel graphene materials as the inner and outer shielding thickness of the cable, which is 0.6-0.8mm, the thermal stability of the cable is improved, the service life of the cable is ensured, and the continuous power supply capacity at high temperature is ensured; the outside of pottery polyolefin 6 is the cockscomb structure, fire prevention mud 5 is filled between the outside sawtooth of pottery polyolefin 6 and first glass fiber layer 4, pottery polyolefin material that is the sawtooth structure adds fire prevention mud 5, can fine "interlock" form wholly, reach the performance complementation, the condition of becoming soft can appear in solitary pottery polyolefin material being heated, just begin to soften about 140 ℃ promptly, then form hard pottery shell after 650 ℃, and because the inside stress action flame retardant coating of cable warp easily when softening, thereby make the cable lose fire resistance, after adopting the sawtooth structure, fire prevention mud 5 will play good reinforcement effect. Water and sodium silicate exist in fire prevention mud 5 and have kept the good compliance of fire prevention mud 5 normal atmospheric temperature, and moisture volatilizees when being heated, fire prevention mud 5 becomes hard, play good supporting role, the stability of flame retardant coating at the in-process overall mechanism of burning has been guaranteed, porcelainized polyolefin can block the inside that moisture immerges electrically conductive cable 11 in fire prevention mud 5 at normal atmospheric temperature, porcelainized polyolefin thermal resistance is low at normal atmospheric temperature, form after the burning and be full of space porcelainized shell, thereby possess good heat-proof quality, fan-shaped foaming filling strip 10 and fire-retardant polypropylene filling rope 8 are low smoke and zero halogen flame retardant material, strict control cable halogen, N, S content reduces toxic gas emission, thereby reach the feature of environmental protection when the cable burns.
The working principle is as follows: the conductive core 16 is made of copper or aluminum, the monofilaments of the conductive core 16 adopt a trapezoidal structure, the monofilament annealing degree is deepened (the elongation rate is reached to 35%), the conductor filling coefficient is designed and improved to 99% -99.6%, and the purposes of reducing the monofilament resistivity and the contact resistance between the monofilaments are achieved, so that the conductive capacity of the conductor is improved (the resistance heat is reduced) and the outer diameter of the conductor is reduced (the heat dissipation is facilitated), and a foundation is laid for reducing the loss of the conductor; the inner and outer semi-conductive shielding layers 13 made of novel graphene materials are used as inner and outer shields (with the thickness of 0.6-0.8mm) of the cable, so that the thermal stability of the cable is improved, the service life of the cable is ensured, and the continuous power supply capacity of the cable at high temperature is ensured; meanwhile, the distributed optical fiber 12 is arranged in the center of the conductive cable 11, so that the real-time temperature of the conductive cable 11 is monitored, and troubleshooting is facilitated; for the occasion that needs bear pulling force, except that adopt steel wire armor 3 outside the flame retardant coating (pottery polyolefin plus fire clay 5), this patent provides bigger pulling force through setting up the built-in wire rope 9 of filler strip in the inside of fan-shaped foaming filler strip 10, forms cable hank and frictional force through fan-shaped foaming filler strip 10 and electrically conductive cable 11. The steel wire armor 3 and the steel wire rope 9 arranged in the filler strip form a tensile system, and the cable can bear the weight of the cable in the length of nearly one hundred meters; the high flame-retardant outer sheath 1 adopts halogen-free low-smoke flame-retardant polyolefin sheath material, and the contents of halogen and N, S in the cable are strictly controlled to reduce the discharge amount of toxic gases, so that the environment-friendly performance of the cable during combustion is achieved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (6)
1. The utility model provides an energy-concerving and environment-protective high fire-retardant fire-resistant medium voltage cable, includes two liang of tangent a plurality of electrically conductive cables (11), its characterized in that: every two adjacent conductive cables (11) are filled with sector-shaped foaming filling strips (10) in the outer side gap, the sector-shaped foaming filling strips (10) are inlaid with filling strip built-in steel wire ropes (9), the sector-shaped foaming filling strips (10) are arranged in a plurality of outer sides of second glass fiber layers (7), the inner sides of the second glass fiber layers (7) are filled with flame-retardant polypropylene filling ropes (8), the outer sides of the second glass fiber layers (7) are covered with ceramic polyolefin (6), the outer sides of the ceramic polyolefin (6) are provided with first glass fiber layers (4), the inner sides of the first glass fiber layers (4) are filled with fire-proof mud (5), the outer sides of the first glass fiber layers (4) are wound with steel wire armors (3), and the outer sides of the steel wire armors (3) are covered with wrapping reinforcing layers (2), and the outer side of the wrapping reinforced layer (2) is wrapped with a high-flame-retardant outer sheath (1).
2. The energy-saving environment-friendly high-flame-retardant fire-resistant medium-voltage cable according to claim 1, characterized in that: the conductive cable (11) comprises a conductive core (16), an inner semi-conductive shielding layer (14) covers the outer side of the conductive core (16), and an outer semi-conductive shielding layer (13) is arranged on the outer side of the inner semi-conductive shielding layer (14).
3. The energy-saving environment-friendly high-flame-retardant fire-resistant medium-voltage cable according to claim 2, characterized in that: an XLPE insulating layer (15) is filled between the outer semi-conductive shielding layer (13) and the inner semi-conductive shielding layer (14), and distributed optical fibers (12) are arranged in the centers of the plurality of conductive cables (11).
4. The energy-saving environment-friendly high-flame-retardant fire-resistant medium-voltage cable according to claim 2, characterized in that: the conductive core (16) is made of copper or aluminum, the single wires of the conductive core (16) are of a trapezoidal structure, the inner semi-conductive shielding layer (14) and the outer semi-conductive shielding layer (13) are made of graphene materials, and the thickness of the inner semi-conductive shielding layer and the thickness of the outer semi-conductive shielding layer are 0.6-0.8 mm.
5. The energy-saving environment-friendly high-flame-retardant fire-resistant medium-voltage cable according to claim 1, characterized in that: the outside of pottery polyolefin (6) is the cockscomb structure, fire prevention mud (5) are filled in between the outside sawtooth of pottery polyolefin (6) and first glass fiber layer (4).
6. The energy-saving environment-friendly high-flame-retardant fire-resistant medium-voltage cable according to claim 1, characterized in that: the fan-shaped foaming filling strips (10) and the flame-retardant polypropylene filling ropes (8) are both low-smoke halogen-free flame-retardant materials.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022024227.3U CN214253948U (en) | 2020-09-09 | 2020-09-09 | Energy-saving environment-friendly high-flame-retardant fire-resistant medium-voltage cable |
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| CN202022024227.3U CN214253948U (en) | 2020-09-09 | 2020-09-09 | Energy-saving environment-friendly high-flame-retardant fire-resistant medium-voltage cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114566318A (en) * | 2022-03-17 | 2022-05-31 | 扬州华城电缆有限公司 | Durable power cable for photovoltaic power generation system |
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2020
- 2020-09-09 CN CN202022024227.3U patent/CN214253948U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114566318A (en) * | 2022-03-17 | 2022-05-31 | 扬州华城电缆有限公司 | Durable power cable for photovoltaic power generation system |
| CN114566318B (en) * | 2022-03-17 | 2023-12-08 | 扬州华城电缆有限公司 | Durable power cable for photovoltaic power generation system |
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| DD01 | Delivery of document by public notice |
Addressee: Liu Chao Document name: Deemed not to have given notice |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.888, Section 2, Tengfei Road, Wangcheng economic and Technological Development Zone, Changsha, Hunan 410000 Patentee after: Jinlong Cable Technology Co.,Ltd. Address before: No.888, Section 2, Tengfei Road, Wangcheng economic and Technological Development Zone, Changsha, Hunan 410000 Patentee before: HUNAN C-KINGDOM CABLE CO.,LTD. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An energy-saving, environmentally friendly, high flame retardant, fire-resistant medium voltage cable Granted publication date: 20210921 Pledgee: Agricultural Bank of China Limited Changsha Wangcheng District sub branch Pledgor: Jinlong Cable Technology Co.,Ltd. Registration number: Y2024980008607 |