CN104319015A - Irradiation cross-linking polyethylene insulated low-voltage power cable preparing method - Google Patents
Irradiation cross-linking polyethylene insulated low-voltage power cable preparing method Download PDFInfo
- Publication number
- CN104319015A CN104319015A CN201410592788.XA CN201410592788A CN104319015A CN 104319015 A CN104319015 A CN 104319015A CN 201410592788 A CN201410592788 A CN 201410592788A CN 104319015 A CN104319015 A CN 104319015A
- Authority
- CN
- China
- Prior art keywords
- wrapped
- cable
- layer
- conductor
- voltage power
- 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.)
- Pending
Links
Landscapes
- Insulated Conductors (AREA)
Abstract
The invention discloses an irradiation cross-linking polyethylene insulated low-voltage power cable preparing method and belongs to the technical field of cable manufacturing. A cable comprises a conductor, an insulation wire core which is formed in an insulation mode and is extruded on the outer edge of the conductor, a cable core formed by the insulation wire core, filling materials at a gap of the cable core, a cable forming wrapping belt layer wrapped outside the cable core, an inner protecting layer extruded outside the cable forming wrapping belt, a wrapped metal armoring layer and an extruded outer protecting sleeve from inside to outside. The cable is prepared through the following steps of material selecting, wire drawing, annealing, conductor intertwisting, insulation layer extruding and irradiation, cable forming intertwisting and cable forming wrapping belt wrapping, inner protecting layer extruding, metal armoring layer wrapping and outer protecting sleeve layer extruding in sequence. According to the novel irradiation cross-linking polyethylene insulated low-voltage power cable preparing method, energy loss can be lowered, and production cost can be lowered.
Description
Technical field
The invention belongs to technical field of cable.
Background technology
The production process of tradition cross-linked polyethylene insulation low generally comprises following steps: the wire drawing of conductor and strand system, extrude crosslinked polyetylene insulated, insulated wire cores is cross-linked by the mode such as poach or Steam Heating, packing material and band is used to carry out stranding, extrude sheath, wrapped metal armor layers, finally extrudes oversheath.
Current low-voltage crosslinked cable is divided into warm water crosslinking and cross-linking radiation two kinds.The silane crosslinking technology production cycle is longer, and (two step method is cross-linked the poach needing a few hours, natural-crosslinked silane cable needs several days time to be cross-linked), take production site large, crosslinked with silicane material melt viscosity is large, extrusion flowability is poor, easily there is a small amount of precrosslink situation during production, needs cleaning screw rod and head after shutdown, labour intensity and waste of material are comparatively large, and after poach, conductor is oxidizable; Electron beam to irradiate crosslinked technique, production equipment is once invested greatly, and Operation and Maintenance is complicated, and security protection requires high, and uneven to heavy in section cable irradiation, Housing Starts is low, and utilance is not high, and cost increases.
Summary of the invention
The object of the invention is to: overcome the problems referred to above that prior art exists, reduce energy consumption and production costs, propose a kind of preparation method of novel radiation cross-linked polyethylene insulation low.
The object of the invention is realized by following technical proposals:
A kind of IXPE isolate low voltage power cable preparation method, described cable is from the inside to the outside by conductor be extruded in the insulated wire cores that the insulation outside conductor forms, the cable core of insulated wire cores composition, the packing material of cable core gap location, the outer wrapped stranding belting layer of cable core, the sheath extruded outside stranding band, wrapped metal armor layers, the oversheath composition extruded, and be prepared from by following steps successively: select materials → wire drawing → annealing → conductor strand → insulating barrier extrude with irradiation → stranding stranded wrapped with stranding band → extrude sheath → metal armor layers wrapped → external sheath layer extrudes,
Described conductor strand step refers to that the multiply copper monofilament formed after wire-drawing process is twisted into conductor;
The step that extrudes of described insulating barrier is with ultraviolet light irradiation cross-linking polyethylene for extruded material, is directly extruded by insulating barrier and be coated on aforesaid conductor periphery to form described insulated wire cores; The irradiation steps of described insulating barrier refers to and is extruding simultaneously, uses ultraviolet light irradiation cross-linking apparatus to carry out cross-linking radiation to insulating barrier;
Described stranding twisting step refers to aforesaid many insulated wire cores to be twisted into and is integrally formed described cable core; Space packed layer between many cable cores is filled; The wrapped step of described stranding belting layer refers to and on aforesaid cable core, is formed into cable wrap belt with glass fiber tape after overlapping wrapped 1 layer;
The described sheath step that extrudes refers on extrusion apparatus, extrudes one deck polyolefine material, form described sheath outside aforesaid stranding belting layer;
The wrapped step of described metal armor layers refers to and on aforesaid sheath, forms described metal armor layers with galvanized steel strip double-layer spiral gap is wrapped;
Described external sheath layer extrudes step and refers to be extruded in by flame retardant polyolefine material on aforesaid metal armor layers on extrusion apparatus and form described external sheath layer.
As selection, in described conductor strand step, each conductor according to by internal layer to outer, 14 times, 18 times, 20 times, the 25 times length that the twisting pitch of each conductor is followed successively by stranded conductor diameter length are arranged.
As selection, in the irradiation steps of described insulating barrier, it is start irradiation after 350 DEG C to 400 DEG C that ultraviolet light irradiation cross-linking apparatus is preheated to irradiation temperature, and ultraviolet light irradiation linear power density is 12kW/m, and insulated wire cores hauling speed is 20m/min to 70m/min.
As selection, in the wrapped step of described stranding belting layer, employing thickness is that the glass fiber tape of 0.20mm is wrapped, and the wrapped rate of putting up is 10%.
As selection, described in extrude in sheath step, use squash type or half plsitive mold, extrude with the screw rod that compression ratio is 1.25:1, processing temperature is 100 DEG C.
As selection, in the wrapped step of described metal armor layers, employing thickness is that the galvanized steel strip double-layer spiral gap of 0.2mm is wrapped.
As selection, described external sheath layer extrudes in step, adopts half plsitive mold, extrudes with the screw rod that compression ratio is 1.25:1, and processing temperature is 100 DEG C.
In such scheme, ultraviolet light irradiation cross-linking polyethylene adopts commercially available prod, as: company of Heilongjiang Orient Science & Technology Co., Ltd., model is the product of RTU90, RTU125, and CompanyAddress is No. 3, Wald road, Kiamusze City of Heilongjiang Province.
Beneficial effect of the present invention: improve the physical mechanical of electric wire, electric property: the normal phase working temperature of ultraviolet light cross-linking cable 125 DEG C, its hot property improves 38.9% compared with silanes crosslinked cable Long-term service temperature 90 DEG C.The cable of model of the same race is under identical working temperature, and ultraviolet light cross-linking cable useful life, comparatively silane cable improved.This irradiation technique degree of cross linking is high, and technique can ensure the crosslinked quality insulated after confirming, also can reach good tensile strength and elongation at break index simultaneously.
Increase economic efficiency, reduce production cost: speed of production can reach more than 20m/min, and without the need to flowing in the past independent cross-linking process step, production efficiency improves greatly; Apparatus direct mounting on plastic extruding machine, saves place, workshop; The undesirable element of copper oxidation is not inspired because of poach; Ultraviolet light irradiation cross-linking Insulation Material extrusion performance is excellent, and material extending is comparatively larger than selection range, lower to the requirement of extrusion temperature and mould apolegamy, greatly improves success rate of once starting shooting, enhances productivity; The cost of raw material is relatively low, but properties of product promote significantly; Wholely extrude cross-linking process personnel and take few, energy consumption is reduced, and decreases production cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention cable;
Fig. 2 is the process flow diagram of the embodiment of the present invention;
Wherein 1, conductor; 2, insulating barrier; 3, cable core; 4, packed layer; 5, stranding belting layer; 6, sheath; 7, metal armor layers; 8, external sheath layer.
Embodiment
Following non-limiting examples is for illustration of the present invention.
As Fig. 1, shown in 2, a kind of IXPE isolate low voltage power cable preparation method, cable is from the inside to the outside by conductor 1 be extruded in the insulated wire cores that the insulating barrier 2 outside conductor 1 forms, the cable core 3 of insulated wire cores composition, the packed layer 4 of cable core 3 gap location, the outer wrapped stranding belting layer 5 of cable core 3, the sheath 6 extruded outside stranding belting layer 5, wrapped metal armor layers 7, the oversheath 8 extruded forms, and be prepared from by following steps successively: select materials → wire drawing → annealing → conductor strand → insulating barrier 2 extrude with irradiation → stranding stranded wrapped with stranding band → extrude sheath 6 → metal armor layers 7 wrapped → external sheath layer 8 extrudes,
Wherein, conductor strand step refers to that the multiply copper monofilament formed after wire-drawing process is twisted into conductor 1, each conductor 1 according to by internal layer to outer, 14 times, 18 times, 20 times, the 25 times length that the twisting pitch of each conductor 1 is followed successively by stranded conductor diameter length are arranged.
The step that extrudes of insulating barrier 2 is with ultraviolet light irradiation cross-linking polyethylene for extruded material, is directly extruded by insulating barrier 2 and be coated on aforesaid conductor 1 periphery to form insulated wire cores; The irradiation steps of insulating barrier 2 refers to and is extruding simultaneously, ultraviolet light irradiation cross-linking apparatus is used to carry out cross-linking radiation to insulating barrier 2, linear power density is about to the ultraviolet light irradiation cross-linking apparatus of 12kW/m, irradiation is started after answering preheating 350 DEG C to 400 DEG C, amass size according to cross-sectional area of conductor, insulated wire cores hauling speed should be 20m/min to 70m/min.
Stranding twisting step refers to aforesaid many insulated wire cores to be twisted into and is integrally formed cable core 3; Space packed layer 4 between many cable cores 3 is filled; The wrapped step of stranding belting layer refers to and on aforesaid cable core 3, is formed into cable wrap belt 5 with glass fiber tape after overlapping wrapped 1 layer, and adopt thickness to be that the glass fiber tape of 0.20mm is wrapped, the wrapped rate of putting up is 10%.
Extruding sheath step refers on extrusion apparatus, outside aforesaid stranding belting layer 5, extrude one deck polyolefine material, forms sheath 6, and use squash type or half plsitive mold, extrude with the screw rod that compression ratio is 1.25:1, processing temperature is 100 DEG C.
The wrapped step of metal armor layers refers to and on aforesaid sheath 6, forms metal armor layers 7 with galvanized steel strip double-layer spiral gap is wrapped, adopts thickness to be that the galvanized steel strip double-layer spiral gap of 0.2mm is wrapped.
External sheath layer extrudes step and refers to be extruded in by flame retardant polyolefine material on aforesaid metal armor layers 7 on extrusion apparatus and form external sheath layer 8, and adopt half plsitive mold, extrude with the screw rod that compression ratio is 1.25:1, processing temperature is 100 DEG C.
Finally according to national standard, performance tests is done to cable, qualified rear finished product packing warehouse-in.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. an IXPE isolate low voltage power cable preparation method, it is characterized in that described cable from the inside to the outside by conductor be extruded in the insulated wire cores that the insulation outside conductor forms, the cable core of insulated wire cores composition, the packing material of cable core gap location, the outer wrapped stranding belting layer of cable core, the sheath extruded outside stranding band, wrapped metal armor layers, the oversheath composition extruded, and be prepared from by following steps successively: select materials → wire drawing → annealing → conductor strand → insulating barrier extrude with irradiation → stranding stranded wrapped with stranding band → extrude sheath → metal armor layers wrapped → external sheath layer extrudes,
Described conductor strand step refers to that the multiply copper monofilament formed after wire-drawing process is twisted into conductor;
The step that extrudes of described insulating barrier is with ultraviolet light irradiation cross-linking polyethylene for extruded material, is directly extruded by insulating barrier and be coated on aforesaid conductor periphery to form described insulated wire cores; The irradiation steps of described insulating barrier refers to and is extruding simultaneously, uses ultraviolet light irradiation cross-linking apparatus to carry out cross-linking radiation to insulating barrier;
Described stranding twisting step refers to aforesaid many insulated wire cores to be twisted into and is integrally formed described cable core; Space packed layer between many cable cores is filled; The wrapped step of described stranding belting layer refers to and on aforesaid cable core, is formed into cable wrap belt with glass fiber tape after overlapping wrapped 1 layer;
The described sheath step that extrudes refers on extrusion apparatus, extrudes one deck polyolefine material, form described sheath outside aforesaid stranding belting layer;
The wrapped step of described metal armor layers refers to and on aforesaid sheath, forms described metal armor layers with galvanized steel strip double-layer spiral gap is wrapped;
Described external sheath layer extrudes step and refers to be extruded in by flame retardant polyolefine material on aforesaid metal armor layers on extrusion apparatus and form described external sheath layer.
2. IXPE isolate low voltage power cable preparation method as claimed in claim 1, it is characterized in that: in described conductor strand step, each conductor according to by internal layer to outer, 14 times, 18 times, 20 times, the 25 times length that the twisting pitch of each conductor is followed successively by stranded conductor diameter length are arranged.
3. IXPE isolate low voltage power cable preparation method as claimed in claim 1, it is characterized in that: in the irradiation steps of described insulating barrier, it is start irradiation after 350 DEG C to 400 DEG C that ultraviolet light irradiation cross-linking apparatus is preheated to irradiation temperature, ultraviolet light irradiation linear power density is 12kW/m, and insulated wire cores hauling speed is 20m/min to 70m/min.
4. IXPE isolate low voltage power cable preparation method as claimed in claim 1, is characterized in that: in the wrapped step of described stranding belting layer, and employing thickness is that the glass fiber tape of 0.20mm is wrapped, and the wrapped rate of putting up is 10%.
5. IXPE isolate low voltage power cable preparation method as claimed in claim 1, it is characterized in that: described in extrude in sheath step, use squash type or half plsitive mold, extrude with the screw rod that compression ratio is 1.25:1, processing temperature is 100 DEG C.
6. IXPE isolate low voltage power cable preparation method as claimed in claim 1, is characterized in that: in the wrapped step of described metal armor layers, and employing thickness is that the galvanized steel strip double-layer spiral gap of 0.2mm is wrapped.
7. IXPE isolate low voltage power cable preparation method as claimed in claim 1, it is characterized in that: described external sheath layer extrudes in step, adopt half plsitive mold, extrude with the screw rod that compression ratio is 1.25:1, processing temperature is 100 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410592788.XA CN104319015A (en) | 2014-10-29 | 2014-10-29 | Irradiation cross-linking polyethylene insulated low-voltage power cable preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410592788.XA CN104319015A (en) | 2014-10-29 | 2014-10-29 | Irradiation cross-linking polyethylene insulated low-voltage power cable preparing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104319015A true CN104319015A (en) | 2015-01-28 |
Family
ID=52374234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410592788.XA Pending CN104319015A (en) | 2014-10-29 | 2014-10-29 | Irradiation cross-linking polyethylene insulated low-voltage power cable preparing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104319015A (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105336446A (en) * | 2015-12-02 | 2016-02-17 | 宁夏瑞银有色金属科技有限公司 | Annealing device used for cable wire and annealing method thereof |
| CN105719773A (en) * | 2016-02-04 | 2016-06-29 | 远东电缆有限公司 | Smart energy large-section locomotive electric wire production process |
| CN106024168A (en) * | 2016-07-27 | 2016-10-12 | 浙江秦山电缆有限公司 | High insulation resistance flame-retardant four-core cable wire and preparation method thereof |
| CN106782808A (en) * | 2016-11-11 | 2017-05-31 | 宁夏中盛电缆技术有限公司 | A kind of low-voltage-powered mixing cable of unbalanced current-carrying capacity and preparation method thereof |
| CN107071941A (en) * | 2016-12-29 | 2017-08-18 | 山东宝世达电缆有限公司 | Oil well steel strip sheath variable-frequency heating cable |
| CN107316713A (en) * | 2017-06-25 | 2017-11-03 | 苏州金钜松机电有限公司 | A kind of Medium drawing mach ine annealing operation method |
| CN108024400A (en) * | 2017-12-04 | 2018-05-11 | 安徽赫特电气有限责任公司 | A kind of parallel connection invariable power heating tape and its manufacture method |
| CN108847308A (en) * | 2018-06-20 | 2018-11-20 | 台州学院 | A kind of crosslinked polyetylene insulated pvc sheath cable and its preparation process |
| CN108986963A (en) * | 2018-07-23 | 2018-12-11 | 安徽成力特科技有限公司 | A kind of power cable with cross-linked polyethylene insulation and preparation method thereof |
| CN109723252A (en) * | 2018-12-18 | 2019-05-07 | 乔治国 | It is a kind of for producing the synthesis workshop of power cable and Plastic-sheathed Cable |
| CN110047614A (en) * | 2019-05-21 | 2019-07-23 | 山东聚辰电缆有限公司 | A kind of ultraviolet light cross-linking polyethylene insulated cable and preparation method thereof |
| CN110060812A (en) * | 2019-05-21 | 2019-07-26 | 山东聚辰电缆有限公司 | A kind of power cable and preparation method thereof of interior containing graphene shielded layer |
| CN110136887A (en) * | 2019-05-09 | 2019-08-16 | 安徽龙庵电缆集团有限公司 | A kind of production method of wear-resistant tensile flexible cable |
| CN110600184A (en) * | 2019-10-14 | 2019-12-20 | 湖北力生电缆有限公司 | Non-magnetic material armored cross-linked polyethylene insulated power cable and manufacturing method thereof |
| CN112992437A (en) * | 2021-03-17 | 2021-06-18 | 贵州安众成电线电缆有限公司 | Manufacturing method of insulated halogen-free low-smoke flame-retardant class A power cable |
| CN113450970A (en) * | 2021-03-22 | 2021-09-28 | 深圳市明谋科技有限公司 | Production method of multilayer wire and cable |
| CN113450944A (en) * | 2021-06-29 | 2021-09-28 | 安徽百商百德电缆有限公司 | Production process of flexible anti-bending high-strength insulating fire-resistant cable |
| CN113903514A (en) * | 2021-10-09 | 2022-01-07 | 趵突泉电缆集团有限公司 | Power cable with special-shaped conductor |
| CN113903514B (en) * | 2021-10-09 | 2024-05-31 | 趵突泉电缆集团有限公司 | Power cable with special-shaped conductor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4536327A (en) * | 1980-06-13 | 1985-08-20 | L'etat Francais | Composition for protection against stray currents and process for using the same |
| CN1066527A (en) * | 1991-05-09 | 1992-11-25 | 中国科学技术大学 | Photo crosslinked polyethylene wire and cable baseline and method for making |
| CN102938272A (en) * | 2012-11-19 | 2013-02-20 | 四川明星电缆股份有限公司 | Production method for conductors for fire-resistant middle-high voltage cables |
| CN202887789U (en) * | 2012-11-29 | 2013-04-17 | 安徽新亚特电缆集团有限公司 | Halogen-free fire-proof mud-proof control cable for offshore platform |
-
2014
- 2014-10-29 CN CN201410592788.XA patent/CN104319015A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4536327A (en) * | 1980-06-13 | 1985-08-20 | L'etat Francais | Composition for protection against stray currents and process for using the same |
| CN1066527A (en) * | 1991-05-09 | 1992-11-25 | 中国科学技术大学 | Photo crosslinked polyethylene wire and cable baseline and method for making |
| CN102938272A (en) * | 2012-11-19 | 2013-02-20 | 四川明星电缆股份有限公司 | Production method for conductors for fire-resistant middle-high voltage cables |
| CN202887789U (en) * | 2012-11-29 | 2013-04-17 | 安徽新亚特电缆集团有限公司 | Halogen-free fire-proof mud-proof control cable for offshore platform |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105336446A (en) * | 2015-12-02 | 2016-02-17 | 宁夏瑞银有色金属科技有限公司 | Annealing device used for cable wire and annealing method thereof |
| CN105719773A (en) * | 2016-02-04 | 2016-06-29 | 远东电缆有限公司 | Smart energy large-section locomotive electric wire production process |
| CN106024168A (en) * | 2016-07-27 | 2016-10-12 | 浙江秦山电缆有限公司 | High insulation resistance flame-retardant four-core cable wire and preparation method thereof |
| CN106782808A (en) * | 2016-11-11 | 2017-05-31 | 宁夏中盛电缆技术有限公司 | A kind of low-voltage-powered mixing cable of unbalanced current-carrying capacity and preparation method thereof |
| CN106782808B (en) * | 2016-11-11 | 2020-08-18 | 宁夏中盛电缆技术有限公司 | Unbalanced current-carrying capacity low-voltage power hybrid cable and manufacturing method thereof |
| CN107071941A (en) * | 2016-12-29 | 2017-08-18 | 山东宝世达电缆有限公司 | Oil well steel strip sheath variable-frequency heating cable |
| CN107071941B (en) * | 2016-12-29 | 2024-01-12 | 山东宝世达电缆科技有限公司 | Steel belt sheath variable-frequency heating cable for oil well |
| CN107316713A (en) * | 2017-06-25 | 2017-11-03 | 苏州金钜松机电有限公司 | A kind of Medium drawing mach ine annealing operation method |
| CN108024400A (en) * | 2017-12-04 | 2018-05-11 | 安徽赫特电气有限责任公司 | A kind of parallel connection invariable power heating tape and its manufacture method |
| CN108847308A (en) * | 2018-06-20 | 2018-11-20 | 台州学院 | A kind of crosslinked polyetylene insulated pvc sheath cable and its preparation process |
| CN108986963A (en) * | 2018-07-23 | 2018-12-11 | 安徽成力特科技有限公司 | A kind of power cable with cross-linked polyethylene insulation and preparation method thereof |
| CN109723252A (en) * | 2018-12-18 | 2019-05-07 | 乔治国 | It is a kind of for producing the synthesis workshop of power cable and Plastic-sheathed Cable |
| CN110136887A (en) * | 2019-05-09 | 2019-08-16 | 安徽龙庵电缆集团有限公司 | A kind of production method of wear-resistant tensile flexible cable |
| CN110047614A (en) * | 2019-05-21 | 2019-07-23 | 山东聚辰电缆有限公司 | A kind of ultraviolet light cross-linking polyethylene insulated cable and preparation method thereof |
| CN110060812A (en) * | 2019-05-21 | 2019-07-26 | 山东聚辰电缆有限公司 | A kind of power cable and preparation method thereof of interior containing graphene shielded layer |
| CN110600184A (en) * | 2019-10-14 | 2019-12-20 | 湖北力生电缆有限公司 | Non-magnetic material armored cross-linked polyethylene insulated power cable and manufacturing method thereof |
| CN112992437A (en) * | 2021-03-17 | 2021-06-18 | 贵州安众成电线电缆有限公司 | Manufacturing method of insulated halogen-free low-smoke flame-retardant class A power cable |
| CN113450970A (en) * | 2021-03-22 | 2021-09-28 | 深圳市明谋科技有限公司 | Production method of multilayer wire and cable |
| CN113450944A (en) * | 2021-06-29 | 2021-09-28 | 安徽百商百德电缆有限公司 | Production process of flexible anti-bending high-strength insulating fire-resistant cable |
| CN113903514A (en) * | 2021-10-09 | 2022-01-07 | 趵突泉电缆集团有限公司 | Power cable with special-shaped conductor |
| CN113903514B (en) * | 2021-10-09 | 2024-05-31 | 趵突泉电缆集团有限公司 | Power cable with special-shaped conductor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104319015A (en) | Irradiation cross-linking polyethylene insulated low-voltage power cable preparing method | |
| CN102347109B (en) | Manufacture method for low-voltage electric power cable used for nuclear power station | |
| CN102737787B (en) | Manufacturing method for seabed photoelectricity composite rope with split conductor in huge cross section | |
| CN104240810A (en) | Level-1E cable for gentle environment of third-generation passive nuclear power plant and producing method thereof | |
| CN103871615A (en) | High-elasticity anti-twist wind energy cable with nominal voltage of six to thirty-five kilowatts and manufacturing method | |
| CN104051078A (en) | Technology for manufacturing plastic electric wire and cable | |
| CN105575460A (en) | Insulating aerial aluminum alloy cable and preparation method thereof | |
| CN201877158U (en) | High-conductivity and ultrahigh-strength 10kV overhead insulated cable | |
| CN105390213A (en) | Cable production process | |
| CN102568701B (en) | Production process and equipment for producing 10-35kV power cable by silane crosslinkable polyethylene | |
| CN102254597A (en) | Photovoltaic cable and manufacture method thereof | |
| CN101887783A (en) | Method for manufacturing cable for airport navigation light | |
| CN204204441U (en) | A kind of bus cable | |
| CN102969091A (en) | Shielding treatment method for insulated wire core of crosslinked polyethylene insulated power cable | |
| CN105355260B (en) | Cable for tower and manufacturing method of cable | |
| CN105976912A (en) | Undersea high-voltage cable, undersea high-voltage cable manufacturing method and insulation layer material for high-voltage cables | |
| CN103745769A (en) | High-flexibility anti-bending robot cable | |
| CN207397743U (en) | Environment-friendly type thermostable PVC cables | |
| CN103137266A (en) | Method for manufacturing power cables | |
| CN204215738U (en) | A kind of polytetrafluoroethyl-ne propylene insulation armoured soft cable | |
| CN204130198U (en) | A kind of two core cross linked insulation fireproof power cables | |
| CN103606404A (en) | Irrigation cable | |
| CN103366897A (en) | VCV vertical type L-shaped chemical crosslinking cable production process and bearing vertical tower | |
| CN203644418U (en) | Highly-flexible bending-resistant robot electric cable | |
| CN203871065U (en) | Hollow ventilating cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150128 |
|
| RJ01 | Rejection of invention patent application after publication |