CN113035434A - Durable cable coated with flame-retardant coating - Google Patents
Durable cable coated with flame-retardant coating Download PDFInfo
- Publication number
- CN113035434A CN113035434A CN202110327957.7A CN202110327957A CN113035434A CN 113035434 A CN113035434 A CN 113035434A CN 202110327957 A CN202110327957 A CN 202110327957A CN 113035434 A CN113035434 A CN 113035434A
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- Prior art keywords
- flame
- outer side
- cable
- layer
- sleeve
- 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.)
- Granted
Links
- 239000003063 flame retardant Substances 0.000 title claims abstract description 54
- 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 title claims abstract description 53
- 239000011248 coating agent Substances 0.000 title claims abstract description 21
- 238000000576 coating method Methods 0.000 title claims abstract description 21
- 239000010410 layer Substances 0.000 claims abstract description 55
- 239000000463 material Substances 0.000 claims abstract description 28
- 239000011247 coating layer Substances 0.000 claims abstract description 21
- 238000005260 corrosion Methods 0.000 claims abstract description 20
- 239000000443 aerosol Substances 0.000 claims abstract description 17
- 239000011241 protective layer Substances 0.000 claims abstract description 13
- 239000000945 filler Substances 0.000 claims abstract description 5
- 239000004677 Nylon Substances 0.000 claims description 11
- 229920001778 nylon Polymers 0.000 claims description 11
- 230000007797 corrosion Effects 0.000 claims description 10
- 239000004743 Polypropylene Substances 0.000 claims description 9
- 229920001971 elastomer Polymers 0.000 claims description 9
- -1 polypropylene Polymers 0.000 claims description 9
- 229920001155 polypropylene Polymers 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000004744 fabric Substances 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000003365 glass fiber Substances 0.000 claims description 5
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 229920006334 epoxy coating Polymers 0.000 claims 2
- 238000005507 spraying Methods 0.000 claims 2
- 239000002245 particle Substances 0.000 abstract description 9
- 239000003795 chemical substances by application Substances 0.000 abstract description 7
- 230000002265 prevention Effects 0.000 abstract description 4
- 239000003822 epoxy resin Substances 0.000 description 6
- 229920000647 polyepoxide Polymers 0.000 description 6
- 239000003814 drug Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
- H01B7/1825—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of a high tensile strength core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/1895—Internal space filling-up means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/2806—Protection against damage caused by corrosion
Abstract
The invention discloses a durable cable coated with flame-retardant coating, which comprises a center filling rope and a cable core, wherein a first insulating sleeve is sleeved on the outer surface of the cable core, the first insulating sleeve and the cable core are uniformly arranged on the outer side of the center filling rope, a second insulating sleeve is sleeved on the outer side of the first insulating sleeve, and a filler is arranged between the first insulating sleeve and the second insulating sleeve. According to the durable cable coated with the flame-retardant coating, the flame-retardant coating layers sprayed on the flame-retardant material layer and the outer side of the protective layer perform passive flame-retardant fire prevention on the cable, so that a common external fire source can be blocked, the aerosol layer can release aerosol after the PTEE anti-corrosion sleeve is burnt out, and the fire extinguishing particle generating agent is decomposed by using the heat and power of the fire extinguishing gas generated by the aerosol agent to release high-efficiency fire extinguishing particles, so that active fire extinguishing is realized, the fire resistance of the cable is greatly improved, and the normal use and the working safety of the cable are ensured.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a durable cable coated with a flame-retardant coating.
Background
The cable includes power cable, control cable, compensation cable, shielding cable, high-temperature cable, computer cable, signal cable, coaxial cable, fire-resistant cable, marine cable, mining cable, aluminum alloy cable, drag chain cable, etc. They are composed of single or multi-strand wires and insulating layers, and are used for connecting circuits, electric appliances and the like. In order to ensure the safety of the cable, the flame-retardant coating is coated on the outer side of the cable usually, and the flame-retardant protection effect is achieved when an accident is caused, but the passive fire prevention generally has a limited effect, the flame-retardant effect is poor, the normal use and the working safety of the cable cannot be ensured, and the durability of most of the cable is insufficient, so that the durable cable coated with the flame-retardant coating is provided.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the existing defects, and provide a durable cable coated with flame retardant coating, wherein a flame retardant coating layer sprayed on the outer sides of a flame retardant material layer and a protective layer is used for carrying out passive flame retardant and fire prevention on the cable, so as to meet the general blocking of an external fire source, an aerosol layer can release aerosol after a PTEE corrosion-resistant sleeve is burnt out, and a fire extinguishing particle generating agent is decomposed by utilizing the heat and power of fire extinguishing gas generated by aerosol agents to release high-efficiency fire extinguishing particles, so that the active fire extinguishing is realized, the fire resistance of the cable is greatly improved, the normal use and the working safety of the cable are ensured, and the problems in the background technology can be effectively solved.
In order to achieve the purpose, the invention provides the following technical scheme: a durable cable coated with flame-retardant coating comprises a center filling rope and a cable core, wherein a first insulating sleeve is sleeved on the outer side surface of the cable core, the first insulating sleeve and the cable core are uniformly arranged on the outer side of the center filling rope, a second insulating sleeve is sleeved on the outer side of the first insulating sleeve, filling materials are arranged between the first insulating sleeve and the second insulating sleeve, the outer side surface of the second insulating sleeve is provided with a thin steel wire armor layer, the outer side surface of the thin steel wire armor layer is provided with a PTEE anti-corrosion sleeve, the outer side surface of the PTEE anti-corrosion casing is sleeved with a flame-retardant material layer, the outer side surface of the flame-retardant material layer is provided with a protective layer, the outer side surface of the protective layer is sprayed with a flame-retardant coating layer, a plurality of annular cavities are uniformly formed in the PTEE anti-corrosion sleeve, and an aerosol layer is arranged in each annular cavity.
As a preferred technical scheme of the invention, the outer side of the flame-retardant coating layer is sprayed with an epoxy resin coating layer, and the outer side of the epoxy resin coating layer is sprayed with a decorative coating.
As a preferred technical scheme of the invention, the center filling rope comprises an elastic rubber rod, a spring sleeve and a polypropylene net-shaped braided rope sleeve, the spring sleeve is sleeved on the outer side of the elastic rubber rod, the polypropylene net-shaped braided rope sleeve is sleeved on the outer side of the spring sleeve, and the spring sleeve is a compact spring.
As a preferred technical scheme of the invention, the protective layer comprises a wear-resistant nylon jacket layer and PVC coated glass fiber cloth, the wear-resistant nylon jacket layer is arranged on the outer side of the flame-retardant material layer, and the PVC coated glass fiber cloth is arranged on the outer side of the wear-resistant nylon jacket layer.
As a preferred technical scheme of the invention, the flame retardant material layer is a halogen-free low-smoke flame retardant polyolefin cable material layer or a phenolic resin composite material layer or a phenolic FRP material layer.
Compared with the prior art, the invention has the beneficial effects that: the durable cable coated with the flame retardant coating comprises a flame retardant material layer and a protective layer, wherein the flame retardant material layer and the flame retardant coating layer sprayed on the outer side of the protective layer are used for passively flame-retarding and preventing fire of the cable to block a general external fire source, the PTEE corrosion-resistant sleeve is internally and uniformly distributed with a plurality of annular cavities, aerosol can be released after the PTEE corrosion-resistant sleeve is burnt out at a higher temperature and has a longer combustion duration, the aerosol in the aerosol layer is formed by combining an efficient gas-generating aerosol medicament and a fire-extinguishing particle generating agent, the fire-extinguishing particle generating agent is decomposed by using the heat and power of the fire-extinguishing gas generated by the aerosol medicament to release efficient fire-extinguishing particles, so that active fire extinguishing is realized, the fire-proof performance of the cable is greatly improved, the normal use and the working safety of the cable are ensured, and meanwhile, the strength of the cable can, the flexibility of the central filling rope can be improved, the filling material is used for buffering and damping, and the PTEE anti-corrosion sleeve is mainly used for carrying out anti-corrosion protection on the cable, so that the durability of the cable is greatly improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a partial structural schematic diagram of the present invention.
In the figure: the cable comprises a central filling rope 1, an elastic rubber rod 101, a spring sleeve 102, a polypropylene reticular braided rope sleeve 103, a cable core 2, a first insulating sleeve 3, a filler 4, a second insulating sleeve 5, a thin steel wire armor layer 6, a PTEE anti-corrosion sleeve 7, a flame retardant material layer 8, a wear-resistant nylon jacket layer 9, a PVC coating glass fiber fabric 10, a flame retardant coating layer 11, an epoxy resin coating layer 12, a decorative coating 13 and an aerosol glue layer 14.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a durable cable coated with flame retardant coating comprises a center filling rope 1 and a cable core 2, wherein a first insulating sleeve 3 is sleeved on the outer side surface of the cable core 2, the first insulating sleeve 3 and the cable core 2 are uniformly arranged on the outer side of the center filling rope 1, a second insulating sleeve 5 is sleeved on the outer side of the first insulating sleeve 3, a filler 4 is arranged between the first insulating sleeve 3 and the second insulating sleeve 5, the filler 4 is used for buffering and damping, a thin steel wire armor layer 6 is arranged on the outer side surface of the second insulating sleeve 5, the strength of the cable can be improved by the thin steel wire armor layer 6 and a protective layer on the cable, a PTEE anti-corrosion sleeve 7 is arranged on the outer side surface of the thin steel wire armor layer 6, the PTEE anti-corrosion sleeve 7 is mainly used for anti-corrosion protection of the cable, and the durability of the cable is greatly improved, the outer side surface of the PTEE corrosion-resistant sleeve 7 is sleeved with a flame-retardant material layer 8, the flame-retardant material layer 8 is a halogen-free low-smoke flame-retardant polyolefin cable material layer or a phenolic resin composite material layer or a phenolic FRP material layer, the outer side surface of the flame-retardant material layer 8 is provided with a protective layer, the outer side surface of the protective layer is sprayed with a flame-retardant coating layer 11, the cable is subjected to passive flame-retardant fire prevention through the flame-retardant material layer 8 and the flame-retardant coating layer 11 sprayed on the outer side of the protective layer, so as to be blocked against a general external fire source, a plurality of annular cavities are uniformly formed in the PTEE corrosion-resistant sleeve 7, an aerosol layer 14 is arranged in each annular cavity, when the PTEE corrosion-resistant sleeve 7 with longer combustion duration and higher temperature is burnt out, aerosol in the, the thermal power and the power of the fire extinguishing gas generated by the aerosol medicament are utilized to decompose the fire extinguishing particle generating agent to release high-efficiency fire extinguishing particles, so that active fire extinguishing is realized, the fire resistance of the cable is greatly improved, and the normal use and the work safety of the cable are ensured.
Preferably, the outer side of the flame retardant coating layer 11 is sprayed with an epoxy resin coating layer 12, the outer side of the epoxy resin coating layer 12 is sprayed with a decorative coating layer 13, the epoxy resin coating layer 12 can further improve the corrosion resistance of the cable, and the decorative coating layer 13 mainly plays a decorative role.
Preferably, the center filling rope 1 comprises an elastic rubber rod 101, a spring sleeve 102 and a polypropylene mesh-shaped woven rope sleeve 103, the spring sleeve 102 is sleeved outside the elastic rubber rod 101, the polypropylene mesh-shaped woven rope sleeve 103 is sleeved outside the spring sleeve 102, the elastic rubber rod 102 is made of flexible rubber, the overall flexibility of the cable can be improved by matching the spring sleeve 102, the cable has good resilience and can protect the cable core, the polypropylene mesh-shaped woven rope sleeve 103 is used for isolating and protecting the insulating sleeve and the spring sleeve 102, and the spring sleeve 102 is a compact spring and prevents the polypropylene mesh-shaped woven rope sleeve 103 from being clamped.
Preferably, the inoxidizing coating includes the fine cloth 10 of wear-resisting nylon jacket layer 9 and PVC coating glass, and wear-resisting nylon jacket layer 9 sets up in the 8 outsides of flame retardant material layer, and the fine cloth 10 of PVC coating glass sets up the outside of wear-resisting nylon jacket layer 9, and wear-resisting nylon jacket layer 9 sets up in the more outside of cable conductor, can improve its wearability, and the fine cloth 10 of cooperation PVC coating glass can and then improve the durability.
The parts which are not disclosed in the invention are all the prior art, and the specific structure, the materials and the working principle are not detailed. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a coating has flame retardant coating's durable type cable conductor, includes central filling rope (1) and cable core (2), its characterized in that: the cable core (2) is sleeved with a first insulating sleeve (3) on the outer side surface, the first insulating sleeve (3) and the cable core (2) are uniformly arranged on the outer side of the central filling rope (1), a second insulating sleeve (5) is sleeved on the outer side of the first insulating sleeve (3), a filler (4) is arranged between the first insulating sleeve (3) and the second insulating sleeve (5), a thin steel wire armor layer (6) is arranged on the outer side surface of the second insulating sleeve (5), a PTEE corrosion-resistant sleeve (7) is arranged on the outer side surface of the thin steel wire armor layer (6), a flame-retardant material layer (8) is sleeved on the outer side surface of the PTEE corrosion-resistant sleeve (7), a protective layer is arranged on the outer side surface of the flame-retardant material layer (8), a flame-retardant coating layer (11) is sprayed on the outer side surface of the flame-retardant material layer, a plurality of annular cavities are uniformly formed in the PTEE corrosion, an aerosol layer (14) is arranged in the annular cavity.
2. The flame retardant coated durable electric cable of claim 1, wherein: the outside spraying of fire retardant coating layer (11) has epoxy coating layer (12), the outside spraying of epoxy coating layer (12) has decorative coating (13).
3. The flame retardant coated durable electric cable of claim 1, wherein: the center filling rope (1) comprises an elastic rubber rod (101), a spring sleeve (102) and a polypropylene net-shaped woven rope sleeve (103), the spring sleeve (102) is sleeved on the outer side of the elastic rubber rod (101), the polypropylene net-shaped woven rope sleeve (103) is sleeved on the outer side of the spring sleeve (102), and the spring sleeve (102) is a compact spring.
4. The flame retardant coated durable electric cable of claim 1, wherein: the protective layer comprises a wear-resistant nylon jacket layer (9) and PVC coated glass fiber cloth (10), the wear-resistant nylon jacket layer (9) is arranged on the outer side of the flame retardant material layer (8), and the PVC coated glass fiber cloth (10) is arranged on the outer side of the wear-resistant nylon jacket layer (9).
5. The flame retardant coated durable electric cable of claim 1, wherein: the flame-retardant material layer (8) is a halogen-free low-smoke flame-retardant polyolefin cable material layer or a phenolic resin composite material layer or a phenolic FRP material layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110327957.7A CN113035434B (en) | 2021-03-26 | 2021-03-26 | Durable cable coated with flame-retardant coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110327957.7A CN113035434B (en) | 2021-03-26 | 2021-03-26 | Durable cable coated with flame-retardant coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113035434A true CN113035434A (en) | 2021-06-25 |
| CN113035434B CN113035434B (en) | 2022-07-19 |
Family
ID=76472609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110327957.7A Active CN113035434B (en) | 2021-03-26 | 2021-03-26 | Durable cable coated with flame-retardant coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113035434B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990013901A1 (en) * | 1989-05-10 | 1990-11-15 | Raychem Corporation | Apparatus and method for the reduction of polyolefin insulation cracking of cables |
| CN109326376A (en) * | 2018-10-10 | 2019-02-12 | 惠州市太金电线电缆有限公司 | A kind of heat-resistant fireproof cable |
| CN209328557U (en) * | 2018-12-30 | 2019-08-30 | 江苏通济线缆有限公司 | A kind of wear-resisting double sheath drag chain cables of high flexibility |
| CN210467393U (en) * | 2019-10-25 | 2020-05-05 | 廊坊市鑫朝龙线缆科技有限公司 | Insulating fire prevention type mineral substance cable |
| CN210777946U (en) * | 2019-09-25 | 2020-06-16 | 云南多宝电缆集团股份有限公司 | 1500V direct current flame-retardant wear-resistant subway cable |
| CN211879038U (en) * | 2020-03-26 | 2020-11-06 | 云南巨力电缆股份有限公司 | Plastic insulating flame-retardant anti-interference control cable |
-
2021
- 2021-03-26 CN CN202110327957.7A patent/CN113035434B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990013901A1 (en) * | 1989-05-10 | 1990-11-15 | Raychem Corporation | Apparatus and method for the reduction of polyolefin insulation cracking of cables |
| CN109326376A (en) * | 2018-10-10 | 2019-02-12 | 惠州市太金电线电缆有限公司 | A kind of heat-resistant fireproof cable |
| CN209328557U (en) * | 2018-12-30 | 2019-08-30 | 江苏通济线缆有限公司 | A kind of wear-resisting double sheath drag chain cables of high flexibility |
| CN210777946U (en) * | 2019-09-25 | 2020-06-16 | 云南多宝电缆集团股份有限公司 | 1500V direct current flame-retardant wear-resistant subway cable |
| CN210467393U (en) * | 2019-10-25 | 2020-05-05 | 廊坊市鑫朝龙线缆科技有限公司 | Insulating fire prevention type mineral substance cable |
| CN211879038U (en) * | 2020-03-26 | 2020-11-06 | 云南巨力电缆股份有限公司 | Plastic insulating flame-retardant anti-interference control cable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113035434B (en) | 2022-07-19 |
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Address after: 475004 Electric Power Mansion, Jinming Avenue, Kaifeng, Henan Patentee after: KAIFENG POWER SUPPLY COMPANY, STATE GRID HENAN ELECTRIC POWER Co.,Ltd. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 100032 West Chang'an Avenue, Xicheng District, Xicheng District, Beijing Patentee before: STATE GRID CORPORATION OF CHINA Patentee before: KAIFENG POWER SUPPLY COMPANY, STATE GRID HENAN ELECTRIC POWER Co.,Ltd. |
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Effective date of registration: 20240410 Address after: 475004 Electric Power Mansion, Jinming Avenue, Kaifeng, Henan Patentee after: KAIFENG POWER SUPPLY COMPANY, STATE GRID HENAN ELECTRIC POWER Co.,Ltd. Country or region after: China Patentee after: ZHONGYUAN University OF TECHNOLOGY Patentee after: ZHENGZHOU HENGTIAN COPPER Co.,Ltd. Address before: 475004 Electric Power Mansion, Jinming Avenue, Kaifeng, Henan Patentee before: KAIFENG POWER SUPPLY COMPANY, STATE GRID HENAN ELECTRIC POWER Co.,Ltd. Country or region before: China Patentee before: STATE GRID CORPORATION OF CHINA |