CN202948763U - Safe fire-resistant medium and high voltage cable - Google Patents
Safe fire-resistant medium and high voltage cable Download PDFInfo
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- CN202948763U CN202948763U CN 201220610953 CN201220610953U CN202948763U CN 202948763 U CN202948763 U CN 202948763U CN 201220610953 CN201220610953 CN 201220610953 CN 201220610953 U CN201220610953 U CN 201220610953U CN 202948763 U CN202948763 U CN 202948763U
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Abstract
The utility model discloses a safe fire-resistant medium and high voltage cable, which comprises a cabling core, wherein the cabling core comprises a plurality of single cores, filling layers and a cabling wrapping tape layer, wherein the filling layers are arranged between the single cores, the cabling wrapping tape layer is wrapped on the single cores and the filling layers, each single core is orderly coated with a shielding layer, an insulating layer, an outer shielding layer, a metal shielding layer, a split-phase fire-resistant insulation layer and an inner wrapping tape layer form inside to outside. The safe fire-resistant medium and high voltage cable has excellent heat insulation effect by being laid on a building, greatly improves fire-resistant performance of cables, and can delay damage to a power system because of sudden incidents such as fires and natural hazards and the like, thereby gaining time for rescue operation.
Description
Technical field
The utility model relates to the cables manufacturing technical field, particularly relates to the fire-resistant medium and high voltage cable of a kind of safety-type.
Background technology
Entered for 21st century, the infrastructure of China has entered the gold period of building, and in today that population and urbanization are sharply expanded, in order to economize on resources, urban construction is had to clustering, scale and high stratification development.The country of emphasis such as station, airport, subway, nuclear power station, commercial hotel, hospital, shopping plaza, residential building and people's livelihood engineering are except needs are considered the comfortableness of the Function and environment that it is indispensable, fail safe is more and more brought into schedule, and Shanghai " 11.15 " wildfire accident has brought people very deep caution.Fire-resisting cable is as special cable, is applied to occasion that coefficient of safety is had relatively high expectations, has been subject to the extensive approval of client and society.
Along with the continuous high stratification of building and clustering, the electric power transfer capacity is also increasing, transformation system need to be arranged on building, thereby shorten the transmission range of main loop cabling, reduce the voltage drop of main loop cabling and the electric energy loss in the electric power transfer process, require the path of laying of a part of medium-pressure or high pressure cable is extended to transformation system on building.Therefore, one section medium-pressure or high pressure cable on the building that is laid in requires to have certain fire resistance, can greatly delay because the burst accidents such as fire to the destruction of electric power system.
Traditional fire-resisting cable is mainly take low-voltage cable as main, and basic structure is wrapped inorganic mica tape on conductor, prevents that within a certain period of time cable from opening circuit under thermal-flame.Yet this structure is not suitable for the middle high-pressure cable of fire-resistant requirement, because it can not solve the balance between middle high-pressure cable electrical property and fire resistance.And the middle pressure fire-resisting cable that existing market occurs, most of employing is crosslinked polyetylene insulated, in fire situation, its crosslinked polyetylene insulated meeting was melted because of excess Temperature in the short period (can't be up to state standards 90 minutes that stipulate), lose insulating effect, cause the cable thermal breakdown, lose its function, fail really to play the effect of fire-resisting cable.
For example application number is CN201120346417.5; publication number is the Chinese patent " a kind of fire safe type medium and high voltage cable " of CN202258494U; a kind of fire safe type medium and high voltage cable is disclosed; comprise several insulated electric conductors; the stranded formation cable core of several insulated electric conductors; the cable core outside is enclosed with refractory heat-insulating combined protection layer; refractory heat-insulating combination fireprotection layer consists of by three layers; internal layer is the insulation protective jacket that extrudes moulding; inferior skin is the thermal insulation gear fire bed of wrapped formation; outer for extruding the fire-resisting protection layer of moulding, refractory heat-insulating combination fireprotection layer extrusion moulding has restrictive coating.The weak point of this patent is: this body structure of cable is too simple, and effect of heat insulation is poor, and fire resistance period is short, and fire resistance is also poor, under the destruction of the burst accidents such as fire, natural calamity to electric power system, can not gain time for rescue work well.
The utility model content
The purpose of this utility model is to overcome the problems referred to above that prior art exists, and proposes the fire-resistant medium and high voltage cable of a kind of safety-type.Cable laying of the present utility model has good effect of heat insulation on building, greatly improved the fire resistance of cable, can delay because of the destruction of the burst accidents such as fire, natural calamity to electric power system, for rescue work gains time.
The utility model is realized by the following technical solutions:
The fire-resistant medium and high voltage cable of a kind of safety-type, comprise into cable core, it is characterized in that: described one-tenth cable core comprises many monomer cores, is arranged on many packed layer, wrapped stranding belting layers on many monomer cores and packed layer between the monomer core, is coated with successively from inside to outside internal shield, insulating barrier, outer shielding layer, metal screen layer, the fire-resistant separator of phase-splitting and interior belting layer on described every monomer core.
Also comprise the metal armouring layer that is coated on into successively from inside to outside on cable core, outer belting layer and external sheath layer, described metal armouring layer is coated on the stranding belting layer.
Also comprise the oxygen barrier layer and the middle belting layer that are coated on on cable core, described oxygen barrier layer and middle belting layer are successively set between stranding belting layer and metal armouring layer from inside to outside.
Also comprise belting layer in the fire-resistant separator of the turnkey that is coated on on cable core, the fire-resistant separator of described turnkey and middle belting layer are successively set between stranding belting layer and metal armouring layer from inside to outside.
Also comprise the fire-resistant separator of oxygen barrier layer, turnkey and the middle belting layer that are coated on on cable core, described oxygen barrier layer, the fire-resistant separator of turnkey and middle belting layer are successively set between stranding belting layer and metal armouring layer from inside to outside.
Manufacture method of the present utility model comprises the steps: to select materials → wire drawing → annealing → conductor is stranded → co-extrusion and the coating → fire-resistant separator of metal screen layer setting → phase-splitting of internal shield, insulating barrier and outer shielding layer extrude → interior belt is wrapped → stranding stranded with the stranding belting layer wrapped → oxygen barrier layer extrudes → the fire-resistant separator of turnkey extrudes → middle belting layer is wrapped → the metal armouring layer is wrapped → outer belting layer is wrapped → external sheath layer extrudes → service check experiment → finished product packing puts in storage.
The utility model compared with prior art, its advantage is:
1, the utility model is provided with the fire-resistant separator of phase-splitting and the fire-resistant separator of turnkey simultaneously, and all adopting Teh Extrusion Press for Extruding Silicone Rubber Products to carry out the ceramic silastic material extrudes, material has good effect of heat insulation, sinter the ceramic body into through high temperature or flame, because ceramic body main material composition is inorganic silicon, the mechanical strength of the cable that therefore produces is enhanced, original good electrical insulation properties is further promoted, and can greatly improve the fire resistance of cable.
2, the utility model adopts three-layer co-extruded rubber cover to connect sulphur equipment and extrudes simultaneously insulation internal shield, insulating barrier, insulation outer shielding layer, and the cable that this three-layer co-extruded mode makes has very high electric insulating quality; Adopt again hard ethylene-propylene rubber material to replace traditional crosslinked polyethylene as insulating barrier, and the third insulation of hard second can crosslinked polyetylene insulatedly not melted because of excess Temperature as commonly used when fire situation, lose insulating effect, cause the cable thermal breakdown, adhere to that in fire situation the time is greater than 90min; Can delay greatly to have improved the fire resistance of cable, for rescue work gains time because of the destruction of the burst accidents such as fire, natural calamity to electric power system.
3, the oxygen barrier layer of the present utility model cable that adopts extrusion way to make has very high anti-flammability, can prevent effectively that cable from further prolonging combustion in fire situation, greatly protects the electric property of inner insulation layer, improves the fire resistance of cable.
4, to adopt the metal screen layer setting steps to refer to adopt thickness be that the soft copper band individual layer of 0.10mm～0.15mm is overlapping wrapped in external shield to the utility model, and the wrapped rate of putting up is 15%～20%; Or to adopt diameter be that the soft copper silk of 0.20mm～0.40mm is woven in external shield, and count is 70%～90%; Can strengthen and the effect of restriction electric field in insulation, make direction of an electric field along the insulation radial direction, can bear unsymmetrical current and short circuit current simultaneously.
5, the wrapped step of interior belting layer, the wrapped step of middle belting layer and the wrapped step of outer belting layer that adopt of the utility model all refers on lapping equipment with thickness to be overlapping wrapped 1 layer～4 layers of the glass fiber tape of 0.20mm～0.40mm, interior belting layer, middle belting layer and outer belting layer are wrapped on the fire-resistant separator of phase-splitting, the fire-resistant separator of turnkey and metal armouring layer respectively, and the wrapped rate of putting up is 10%～50%; Not only play traditional coating and tighten effect, can also greatly improve the fire-retardant and effect of heat insulation of cable, wrapped glass fiber tape at the metal armouring layer also has the sheath of raising anti-cracking performance simultaneously.
6, to refer to adopt thickness be that the galvanized steel strip double-layer spiral gap of 0.2 mm～0.8mm is wrapped on middle belting layer to the wrapped step of metal armouring layer that adopt of the utility model, or to adopt diameter be that the zinc-coated wire spiral winding of 1.25mm～6.0mm wraps on middle belting layer; Not only play traditional resistance to compression, drawing-resistant function, have simultaneously excellent fire performance, effectively stop flame to burn into internal layer.
7, oxygen barrier layer of the present utility model extrudes step and oversheath extrudes the screw rod that step all adopts low compression ratio, can satisfy the large particularity of low smoke and zero halogen thermosetting polymer CABLE MATERIALS shearing force, can avoid containing in low smoke and zero halogen thermosetting polymer CABLE MATERIALS high magnesium hydroxide and the aluminium hydroxide of filling, in extruding process, because frictional force is large, produce a large amount of heats; When also having avoided for low smoke and zero halogen thermosetting polymer CABLE MATERIALS, adopt compression ratio excessive, the situation that need to set up the extrusion equipment with good cooling device.
8, the utility model adopts the low compression ratio Screw Extrusion, can greatly reduce the shearing force in the material extrusion, and the protection extrusion apparatus can be not excessive because of shearing force, causes the excessive and damage equipment of current of electric; Half plsitive mold is extruded, and can not only make cable extrude rear rounding, and the method can effectively be controlled the draw ratio that material is extruded simultaneously, improves the performance of low-smoke and halogen-free flame retardant polyolefin jacket.
Description of drawings
Fig. 1 is the utility model structural representation
Mark in figure: 1, monomer core; 2, internal shield; 3, insulating barrier; 4, outer shielding layer; 5, metal screen layer; 6, the fire-resistant separator of phase-splitting; 7, interior belting layer; 8, packed layer; 9, stranding belting layer; 10, oxygen barrier layer; 11, the fire-resistant separator of turnkey; 12, middle belting layer; 13, metal armouring layer; 14, outer belting layer; 15, external sheath layer.
Embodiment
Embodiment 1:
The fire-resistant medium and high voltage cable of a kind of safety-type, comprise into cable core, described one-tenth cable core comprises many monomer cores 1, is arranged on many packed layer 8, wrapped stranding belting layers 9 on many monomer cores 1 and packed layer 8 between monomer core 1, is coated with successively from inside to outside internal shield 2, insulating barrier 3, outer shielding layer 4, metal screen layer 5, the fire-resistant separator 6 of phase-splitting and interior belting layer 7 on described every monomer core 1.
Embodiment 2:
The fire-resistant medium and high voltage cable of a kind of safety-type, comprise into cable core, described one-tenth cable core comprises many monomer cores 1, is arranged on many packed layer 8, wrapped stranding belting layers 9 on many monomer cores 1 and packed layer 8 between monomer core 1, is coated with successively from inside to outside internal shield 2, insulating barrier 3, outer shielding layer 4, metal screen layer 5, the fire-resistant separator 6 of phase-splitting and interior belting layer 7 on described every monomer core 1.
In the utility model, also comprise the metal armouring layer 13, outer belting layer 14 and the external sheath layer 15 that are coated on into successively from inside to outside on cable core, described metal armouring layer 13 is coated on stranding belting layer 9.
Embodiment 3:
The fire-resistant medium and high voltage cable of a kind of safety-type, comprise into cable core, described one-tenth cable core comprises many monomer cores 1, is arranged on many packed layer 8, wrapped stranding belting layers 9 on many monomer cores 1 and packed layer 8 between monomer core 1, is coated with successively from inside to outside internal shield 2, insulating barrier 3, outer shielding layer 4, metal screen layer 5, the fire-resistant separator 6 of phase-splitting and interior belting layer 7 on described every monomer core 1.
In the utility model, also comprise the metal armouring layer 13, outer belting layer 14 and the external sheath layer 15 that are coated on into successively from inside to outside on cable core, described metal armouring layer 13 is coated on stranding belting layer 9.
In the utility model, also comprise the oxygen barrier layer 10 and the middle belting layer 12 that are coated on on cable core, described oxygen barrier layer 10 and middle belting layer 12 are successively set between stranding belting layer 9 and metal armouring layer 13 from inside to outside.
Embodiment 4:
The fire-resistant medium and high voltage cable of a kind of safety-type, comprise into cable core, described one-tenth cable core comprises many monomer cores 1, is arranged on many packed layer 8, wrapped stranding belting layers 9 on many monomer cores 1 and packed layer 8 between monomer core 1, is coated with successively from inside to outside internal shield 2, insulating barrier 3, outer shielding layer 4, metal screen layer 5, the fire-resistant separator 6 of phase-splitting and interior belting layer 7 on described every monomer core 1.
In the utility model, also comprise the metal armouring layer 13, outer belting layer 14 and the external sheath layer 15 that are coated on into successively from inside to outside on cable core, described metal armouring layer 13 is coated on stranding belting layer 9.
In the utility model, also comprise belting layer 12 in the fire-resistant separator 11 of the turnkey that is coated on on cable core, the fire-resistant separator 11 of described turnkey and middle belting layer 12 are successively set between stranding belting layer 9 and metal armouring layer 13 from inside to outside.
Embodiment 5:
The fire-resistant medium and high voltage cable of a kind of safety-type, comprise into cable core, described one-tenth cable core comprises many monomer cores 1, is arranged on many packed layer 8, wrapped stranding belting layers 9 on many monomer cores 1 and packed layer 8 between monomer core 1, is coated with successively from inside to outside internal shield 2, insulating barrier 3, outer shielding layer 4, metal screen layer 5, the fire-resistant separator 6 of phase-splitting and interior belting layer 7 on described every monomer core 1.
In the utility model, also comprise the metal armouring layer 13, outer belting layer 14 and the external sheath layer 15 that are coated on into successively from inside to outside on cable core, described metal armouring layer 13 is coated on stranding belting layer 9.
In the utility model, also comprise the fire-resistant separator 11 of the oxygen barrier layer 10, the turnkey that are coated on on cable core and middle belting layer 12, described oxygen barrier layer 10, the fire-resistant separator 11 of turnkey and middle belting layer 12 are successively set between stranding belting layer 9 and metal armouring layer 13 from inside to outside.
manufacture method of the present utility model comprises the steps: to select materials → and wire drawing → annealing → conductor is stranded → internal shield, the co-extrusion of insulating barrier and outer shielding layer and coating → fire-resistant separator of metal screen layer setting → phase-splitting extrudes → interior belting layer is wrapped → stranding stranded with the stranding belting layer wrapped → oxygen barrier layer extrudes → the fire-resistant separator of turnkey extrudes → middle belting layer is wrapped → the metal armouring layer is wrapped → outer belting layer is wrapped → external sheath layer extrudes → service check experiment → finished product packing puts in storage, the fire-resistant separator of described phase-splitting extrudes step and refers to adopt Teh Extrusion Press for Extruding Silicone Rubber Products that the ceramic silastic material is extruded on metal screen layer, extruding thickness is 4.0mm, the described oxygen barrier layer step extrudes and suddenly refer to adopt plsitive mold on extrusion apparatus, is that the screw rod of 2.0:1 is that 40 high flame retardant polyolefine material is extruded on the stranding belting layer with oxygen index with compression ratio, and extruding thickness is 5.0mm, and processing temperature is 165 ℃, the fire-resistant separator of described turnkey extrudes step and refers to adopt Teh Extrusion Press for Extruding Silicone Rubber Products that the ceramic silastic material is extruded on oxygen barrier layer, and extruding thickness is 5.0mm.
In the utility model, 16 times of length that the multiply tin-coated copper monofilament that described conductor twisting step refers to form after wire-drawing process is the stranded conductor diameter length according to twisting pitch are twisted into conductor.
In the utility model, described stranding twisting step refer to through selecting materials → wire drawing → annealing → conductor is stranded → co-extrusion and the coating → fire-resistant separator of metal screen layer setting → phase-splitting of internal shield, insulating barrier and outer shielding layer extrude → many cores of formation are twisted into one after interior belting layer is wrapped; It is that the glass fiber tape of 0.40mm is formed into the cable wrap belt after on stranded all-in-one-piece core overlapping wrapped 4 layers that the wrapped step of described stranding belting layer refers to adopt thickness, and the wrapped rate of putting up is 50%; Fill with packed layer in space between many cores.
In the utility model, the co-extrusion step of described internal shield, insulating barrier and outer shielding layer refers to adopt the semiconducting rubber material as the material of internal shield and outer shielding layer, adopts hard ethylene-propylene rubber material as the material of insulating barrier; And adopt three-layer co-extruded rubber cover to connect sulphur equipment and extrude simultaneously internal shield, insulating barrier, outer shielding layer, the rubber extruding machine processing temperature is 100 ℃, and connecting sulphur pipeline steam pressure is 1.6Mpa, and extrusion linear speed is 15m/min; The encapsulation steps of described internal shield, insulating barrier and outer shielding layer refers to that co-extrusion rubber cover even sulphur equipment is extruded internal shield, insulating barrier, outer shielding layer simultaneously to be coated on through the stranded conductor that forms peripheral from inside to outside successively; Be that internal shield is coated on conductor, insulating barrier is coated on internal shield, and outer shielding layer is coated on insulating barrier.
In the utility model, it is that the soft copper band individual layer of 0.15mm is overlapping wrapped in external shield that described metal screen layer setting steps refers to adopt thickness, and the wrapped rate of putting up is 20%.
In the utility model, the wrapped step of described interior belting layer, the wrapped step of middle belting layer and the wrapped step of outer belting layer all refer on lapping equipment with thickness to be overlapping wrapped 4 layers of the glass fibre of 0.40mm, interior belting layer, middle belting layer and outer belting layer are wrapped on the fire-resistant separator of phase-splitting, the fire-resistant separator of turnkey and metal armouring layer respectively, and the wrapped rate of putting up is 50%.
In the utility model, it is that the galvanized steel strip double-layer spiral gap of 0.8mm is wrapped on middle belting layer that the wrapped step of described metal armouring layer refers to adopt thickness.
In the utility model, described external sheath layer extrudes step and refer to use half plsitive mold on extrusion apparatus, is that the screw rod of 2.0:1 is extruded in flame retardant polyolefine material on outer belting layer and forms external sheath layer with compression ratio, and processing temperature is 175 ℃.
In the utility model, described service check experiment comprises conductor DC resistance test, power frequency withstand test and fire resistance test; Described fire resistance test refers to adopt two blowtorch, and flame temperature is 800 ℃, and it is the withstand voltage test of 35kV that duration of test applies the specified pressure of cable simultaneously, and test duration is 90min; Do not have breakdown cable to form finished product after the service check experiment.
In the utility model, described finished product packing warehouse-in step refers to and will pack warehouse-in by the finished product of performance checking procedure.
Claims (5)
1. fire-resistant medium and high voltage cable of safety-type, comprise into cable core, it is characterized in that: described one-tenth cable core comprises many monomer cores (1), is arranged on the packed layer (8) between many monomer cores (1), wrapped stranding belting layer (9) on many monomer cores (1) and packed layer (8), is coated with successively from inside to outside internal shield (2), insulating barrier (3), outer shielding layer (4), metal screen layer (5), the fire-resistant separator of phase-splitting (6) and interior belting layer (7) on described every monomer core (1).
2. the fire-resistant medium and high voltage cable of a kind of safety-type according to claim 1, it is characterized in that: also comprise the metal armouring layer (13) that is coated on into successively from inside to outside on cable core, outer belting layer (14) and external sheath layer (15), described metal armouring layer (13) is coated on stranding belting layer (9).
3. the fire-resistant medium and high voltage cable of a kind of safety-type according to claim 2, it is characterized in that: also comprise the oxygen barrier layer (10) and the middle belting layer (12) that are coated on on cable core, described oxygen barrier layer (10) and middle belting layer (12) are successively set between stranding belting layer (9) and metal armouring layer (13) from inside to outside.
4. the fire-resistant medium and high voltage cable of a kind of safety-type according to claim 2, it is characterized in that: also comprise belting layer (12) in the fire-resistant separator of the turnkey that is coated on on cable core (11), the fire-resistant separator of described turnkey (11) and middle belting layer (12) are successively set between stranding belting layer (9) and metal armouring layer (13) from inside to outside.
5. the fire-resistant medium and high voltage cable of a kind of safety-type according to claim 2, it is characterized in that: also comprise the oxygen barrier layer (10), the fire-resistant separator of turnkey (11) and the middle belting layer (12) that are coated on on cable core, described oxygen barrier layer (10), the fire-resistant separator of turnkey (11) and middle belting layer (12) are successively set between stranding belting layer (9) and metal armouring layer (13) from inside to outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220610953 CN202948763U (en) | 2012-11-19 | 2012-11-19 | Safe fire-resistant medium and high voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220610953 CN202948763U (en) | 2012-11-19 | 2012-11-19 | Safe fire-resistant medium and high voltage cable |
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| Publication Number | Publication Date |
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| CN202948763U true CN202948763U (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220610953 Expired - Lifetime CN202948763U (en) | 2012-11-19 | 2012-11-19 | Safe fire-resistant medium and high voltage cable |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104299714A (en) * | 2014-10-15 | 2015-01-21 | 中天科技海缆有限公司 | Low-smoke zero-halogen medium-voltage fire-resistant power cable |
| CN105244103A (en) * | 2015-10-30 | 2016-01-13 | 苏俊兰 | Environmental protection device |
| CN105244101A (en) * | 2015-10-30 | 2016-01-13 | 苏俊兰 | Fireproof low-smoke environmental protection device |
| CN105244102A (en) * | 2015-10-30 | 2016-01-13 | 苏俊兰 | Fireproof environmental protection device |
| CN105244104A (en) * | 2015-10-30 | 2016-01-13 | 苏俊兰 | Corrosion-resistant environmental protection device |
| CN106935326A (en) * | 2017-03-30 | 2017-07-07 | 浙江万马股份有限公司 | Multicore cable is pressed in fire prevention |
| CN109378124A (en) * | 2018-12-12 | 2019-02-22 | 安徽蒙特尔电缆集团有限公司 | A kind of wind-power electricity generation twist resistant cable |
-
2012
- 2012-11-19 CN CN 201220610953 patent/CN202948763U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104299714A (en) * | 2014-10-15 | 2015-01-21 | 中天科技海缆有限公司 | Low-smoke zero-halogen medium-voltage fire-resistant power cable |
| CN105244103A (en) * | 2015-10-30 | 2016-01-13 | 苏俊兰 | Environmental protection device |
| CN105244101A (en) * | 2015-10-30 | 2016-01-13 | 苏俊兰 | Fireproof low-smoke environmental protection device |
| CN105244102A (en) * | 2015-10-30 | 2016-01-13 | 苏俊兰 | Fireproof environmental protection device |
| CN105244104A (en) * | 2015-10-30 | 2016-01-13 | 苏俊兰 | Corrosion-resistant environmental protection device |
| CN106935326A (en) * | 2017-03-30 | 2017-07-07 | 浙江万马股份有限公司 | Multicore cable is pressed in fire prevention |
| CN109378124A (en) * | 2018-12-12 | 2019-02-22 | 安徽蒙特尔电缆集团有限公司 | A kind of wind-power electricity generation twist resistant cable |
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| C14 | Grant of patent or utility model | ||
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| CP01 | Change in the name or title of a patent holder | ||
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Address after: No. 18 Yingbin Avenue, Leshan High-tech Development Zone, Sichuan Province, 614001 Patentee after: SUNWAY Co.,Ltd. Address before: No. 18 Yingbin Avenue, Leshan High-tech Development Zone, Sichuan Province, 614001 Patentee before: SICHUAN MINGXING CABLE Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130522 |