CN104036885A - Method for manufacturing photoelectric composite medium-voltage drum cable - Google Patents
Method for manufacturing photoelectric composite medium-voltage drum cable Download PDFInfo
- Publication number
- CN104036885A CN104036885A CN201410211950.9A CN201410211950A CN104036885A CN 104036885 A CN104036885 A CN 104036885A CN 201410211950 A CN201410211950 A CN 201410211950A CN 104036885 A CN104036885 A CN 104036885A
- Authority
- CN
- China
- Prior art keywords
- core
- speciality
- cable
- outside
- filler
- 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
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a method for manufacturing a photoelectric composite medium-voltage drum cable. The photoelectric composite medium-voltage drum cable comprises power line cores, ground line cores, at least one optical element, a special neoprene inner sheath wrapping a cable core, a reinforcing layer which is woven at the exterior of the special neoprene inner sheath and embedded in the special neoprene inner sheath and a special neoprene outer sheath wrapping the reinforcing layer; chlorinated polyethylene rubber materials include the following components of: a chlorinated polyethylene raw rubber, magnesium oxide, dibasic lead sulfate, lead sulfate tribasic, paraffin, chlorinated paraffin, antioxidant, namely, poly(1,2-dihydro-2,2,4-trimethyl-quinoline), a reinforcing agent (carbon black), flame retardant (antimony oxide), a filler (talcum powder), a filler (calcium carbonate), a reinforcing and filling agent (white carbon black), a vulcanizing promoter (triallyl isocyanurate), and a vulcanizing agent (dicumyl peroxide). With the method for manufacturing the photoelectric composite medium-voltage drum cable of the invention adopted, the cable can still keep excellent insulation performance under high temperature burning and humid conditions, and it can be ensured the cable can work normally for a long time under burning, mechanical percussion and water spraying situations.
Description
Technical field
The present invention relates to photoelectric composite medium-pressure drum cable, also relate to a kind of process for the manufacture of photoelectric composite medium-pressure drum cable.
Background technology
Existing photoelectric composite medium-pressure drum cable, can be applicable to the application of high mechanical stress as harbour machinery field, for example be applied on shore container crane, track type container gantry crane, ship unloaders, stacker-reclaimer and other heavy lift equipments.Photoelectric composite medium-pressure drum cable product normally lays open air, usually can under severe environmental conditions, use, as: expose to the sun and rain for a long time; day at sudden and violent night is cold, and frost and snow is freezing, bears the erosion of the natural conditions such as ultraviolet ray, ozone; hydraulic performance decline is than very fast, and useful life is shorter.Between the cable operating period, cable must bear stretching resistance, torsion and flexural fatigue, causes insulation and sheath material hydraulic performance decline very fast, also causes useful life shorter.This type of cable must be changed once average half a year to one year at present.In photoelectric composite medium-pressure drum cable, light unit oversheath adopts thermoset rubber to extrude, because the normal ambient operating temperature of optical fiber is-40 DEG C-70 DEG C, and it is 150 DEG C-200 DEG C by the temperature of curing tube when rubber extruding, time is 10-20min, temperature by curing tube is higher, and the time is longer, is difficult to ensure the performance of optical fiber; In addition, in cable, conductor wire core and light unit stranding are more rambunctious, and this can have influence on the useful life of photoelectric composite medium-pressure drum cable equally.Further, the sheath material performance of photoelectric composite medium-pressure drum cable is not too high, and tensile strength, resistance to low temperature, ageing-resistant performance that causes cable etc. is relatively all poor.
Summary of the invention
The object of this invention is to provide a kind of process for the manufacture of photoelectric composite medium-pressure drum cable, by adopting the oversheath of fast-curing chlorinated polyethylene rubber sheath as light unit, ensured optical fiber property; By adopting the speciality CR sheath interior oversheath as cable, make cable possess the performances such as good low temperature resistant, wear-resisting, oil resistant, the useful life of having improved cable; Also have by the design construction of cable and formulate suitable processing technology, having ensured bending property, tensile property, the resistance to twisting property of cable, the useful life that also can improve cable.
For achieving the above object, the technical solution used in the present invention is: a kind of process for the manufacture of photoelectric composite medium-pressure drum cable, comprise and twist together the multiple power cores and multiple ground core and at least one the light unit that form cable core, be coated on the speciality CR inner sheath of described cable core outside, be woven in the outside of described speciality CR inner sheath and embed reinforced layer wherein, be coated on the speciality CR oversheath of described reinforced layer outside, in described cable core, described multiple power core is along the circumferential direction near arrangement, in center gap between described multiple power core, be filled with semiconductive filler, described multiple ground core and at least one light unit all along the circumferential direction interval dispersed arrangement between the outside of adjacent two described power cores, described ground core with described smooth unit respectively near the described power core of living corresponding both sides, each described power core includes power line core conductor, wrapped isolation strip on described power line core conductor, wrap in the semiconductive conductor shield on described isolation strip, wrap in the insulating barrier of described semiconductive conductor shield outside, wrap in the semiconductive insulation screen of described insulating barrier outside, each described ground core includes ground wire core conductor, wrap in the semiconductive coating layer of described ground wire core conductor outside, described smooth unit comprises the loose sleeve pipe of establishing optical fiber in stranded formation optical cable core multiple, prick the water blocking yarn in described optical cable core outside, what be coated on described water blocking yarn outside can fast-curing chlorinated polyethylene rubber sheath, in gap in each described loose sleeve pipe, be all filled with the compound of thixotropic, in described optical cable core, in internal clearance between multiple described loose sleeve pipes, fill nonmetallic stiffener,
In described power line core conductor, described ground wire core conductor, between adjacent two layers, adopt contrary strand to, the strand of every layer to the strand of strand in respective layer to contrary, the lay ratio of strand is controlled at 12-14 doubly, outermost lay ratio is controlled at 10-12 doubly, and the lay ratio of every layer is all than adjacent outer field many 2 numerical value from outside to inside;
The lay ratio of described multiple power core and multiple ground core and at least one light unit twisted synthesizing cable is not more than 10 times;
Described reinforced layer adopts dacron thread braiding reinforced layer, described semiconductive filler adopts semi-conductive rubber, insulating barrier in described power core adopts ethylene-propylene rubber layer, the material of described loose sleeve pipe adopts polybutylene terephthalate (PBT) plastics, described water blocking yarn adopts water resistance aramid fiber, the compound of described thixotropic adopts ointment, and described nonmetallic stiffener adopts aramid fiber yarn;
Described power core has three, and described ground core has two, and three described power cores are along the circumferential direction near arrangement, between the outside of every adjacent two described power cores near being arranged with a described ground core or light unit;
Comprise the following steps:
(1) process respectively described power core, described ground core and described smooth unit, the described power core processing, conductor in described ground core, between adjacent two layers, adopt contrary strand to, the strand of every layer to the strand of strand in respective layer to contrary, the lay ratio of strand is controlled at 12-14 doubly, outermost lay ratio is controlled at 10-12 doubly, the lay ratio of every layer is all than adjacent outer field many 2 numerical value from outside to inside, in the time of the described smooth unit of processing, first process described optical cable core, then prick water blocking yarn in the outside of this optical cable core, finally on described water blocking yarn, extrude chlorinated polyethylene rubber material, this chlorinated polyethylene rubber material is at 130 DEG C ~ 160 DEG C, short vulcanization between 5 ~ 10min, form described chlorinated polyethylene rubber sheath, the material component of described chlorinated polyethylene rubber material and content are by weight percentage:
Haloflex rubber 35%-45%,
Magnesium oxide 4%-6%,
Second base lead sulfate 0.6%-1.0%,
Lead sulfate tribasic 1.0%-1.5%,
Paraffin 1.0%-1.5%,
Chlorinated paraffin wax 5.5%-6.5%,
Age resistor 2,2,4-trimethyl-1,2-dihyaroquinoline condensate 0.1%-0.3%,
Reinforcing agent carbon black 15%-25%,
Fire retardant antimony oxide 3%-5%,
Filler talcum powder 3%-5%,
Filler calcium carbonate 6%-10%,
The reinforcement filler White Carbon black 3%-5% that holds concurrently,
Vulcanization aid iso-cyanuric acid triallyl ester 1%-3%,
Vulcanizing agent cumyl peroxide 1.5%-4%;
(2) on cabling device by multiple described power cores, multiple described ground core and described at least one light unit according to the lay ratio stranding together that is not more than 10 times, form described cable core, in stranding process, also in the center gap of described cable core, fill out semiconductive packing material, on cabling device, because the optical fiber in light unit can not be stressed, so the corresponding frame of cabling device is set to initiatively unwrapping wire;
(3) on described cable core, extrude speciality CR material, form described speciality CR inner sheath, control the state of cure (vulcanization) of this speciality CR inner sheath at 40%-60%;
(4) form reinforced layer in the braiding of the outside of described speciality CR inner sheath, the count of this reinforced layer is controlled at 30%-50%, angle of weave is controlled at 40 °-60 °, because the state of cure (vulcanization) of described speciality CR inner sheath is controlled at 40%-60%, the reinforced layer of braiding can be embedded in described speciality CR inner sheath;
(5) on described reinforced layer, extrude speciality CR material, form described speciality CR oversheath, this speciality CR oversheath carries out 100% complete cure, now be equivalent to described speciality CR inner sheath to carry out again once sulfuration, the integraty that has ensured inner sheath, reinforced layer, oversheath, the material component of the speciality CR material in described inner sheath, described oversheath and content is by weight percentage:
Neoprene rubber 45%-55%,
Tetramethylthiuram disulfide 1%-2%,
Promoter 2-benzothiazolyl mercaptan 0.5%-1.0%,
Age resistor 2-mercaptobenzimidazole 1.0%-2.0%,
Age resistor N, N'-bis-(betanaphthyl) p-phenylenediamine (PPD) 0.1%-0.3%,
Stearic acid 0.3%-0.7%,
Paraffin 1.0%-2.0%,
Zinc oxide 2.5%-3.5%,
Mixed gas carbon black 8%-15%,
Filler talcum powder 8%-15%,
Filler calcium carbonate 15%-25%,
Di-n-octyl sebacate 4%-6%.
In technique scheme, further improved technical scheme is as follows:
1, in such scheme, in step (1), in the time of the described power line core of processing, first process conductor, then wrapped isolation strip on conductor, then in the outside of isolation strip three-layer co-extruded go out semiconductive conductor screen material, Insulation Material, semiconductive insulation shielding material, sulfuration completely, forms described semiconductive conductor shield, described insulating barrier, described semiconductive insulation screen.
2, in such scheme, in step (1), in the time of the optical cable core of the described smooth unit of processing, first extrude outward and form loose sleeve pipe at optical fiber, and factice for filling in gap in loose sleeve pipe, then the loose sleeve pipe of establishing optical fiber in multiple is carried out to the described optical cable core of stranded formation, wherein in the internal clearance between multiple loose sleeve pipes, be filled with stiffener aramid fiber.
3,, in such scheme, in step (1), in described smooth unit, the preparation method of the material of chlorinated polyethylene rubber sheath comprises the following steps:
(1) by described haloflex rubber 35%-45% mixing 5min-6min in 100 DEG C of-120 DEG C of banburies, mixing even;
(2) in described banbury, add again described magnesium oxide 4%-6%, described second base lead sulfate 0.6%-1.0%, described lead sulfate tribasic 1.0%-1.5%, described paraffin 1.0%-1.5%, described age resistor 2,2,4-trimethyl-1,2-dihyaroquinoline condensate 0.1%-0.3%, described reinforcing agent carbon black 15%-25%, described fire retardant antimony oxide 3%-5%, described filler talcum powder 3%-5%, described filler calcium carbonate 6%-10%, the described reinforcement filler White Carbon black 3%-5% that holds concurrently, mixing 2min-3min;
(3) then in described banbury, add described chlorinated paraffin wax 5.5%-6.5%, mixing 3min-5min;
(4) finally in described banbury, add described vulcanization aid iso-cyanuric acid triallyl ester 1%-3%, described vulcanizing agent cumyl peroxide 1.5%-4%, mixing 0.5min-1.5min, then discharges glue stuff compounding;
(5) by described glue stuff compounding thin-pass 1-2 time in mill, put glue 2-3 time simultaneously, then on tri-roll press machine, open bar slice, the rubber page of output is cooling through chill roll, crosses after talcum powder case, makes finished product chlorinated polyethylene rubber material.
4,, in such scheme, in step (5), the preparation method of described speciality CR material comprises the following steps:
(1) by described neoprene rubber 45%-55% mixing 5min-6min in 100 DEG C of-120 DEG C of banburies, mixing even;
(2) in described banbury, add again described stearic acid 0.3%-0.7%, described paraffin 1.0%-2.0%, described zinc oxide 2.5%-3.5%, described mixed gas carbon black 8%-15%, described filler talcum powder 8%-15%, described filler calcium carbonate 15%-25%, described age resistor N, N'-bis-(betanaphthyl) p-phenylenediamine (PPD) 0.1%-0.3%, described age resistor 2-mercaptobenzimidazole 1.0%-2.0%, mixing 2min-3min;
(3) then in described banbury, add described di-n-octyl sebacate 4%-6%, mixing 1min-5min;
(4) finally in described banbury, add described tetramethylthiuram disulfide 1%-2%, described promoter 2-benzothiazolyl mercaptan 0.5%-1.0%, mixing 0.5min-1.5min, then discharges glue stuff compounding;
(5) by described glue stuff compounding thin-pass 1-2 time in mill, put glue 2-3 time simultaneously, then on tri-roll press machine, open bar slice, the rubber page of output is cooling through chill roll, crosses after talcum powder case, makes finished product speciality CR material.
Due to the utilization of technique scheme, the present invention compared with prior art has following advantages:
The present invention is for the manufacture of the process of photoelectric composite medium-pressure drum cable, its adopt can fast-curing chlorinated polyethylene rubber material as light unit sheath, in rubber extruding process, ensure optical fiber property, thereby improved properties and the useful life of photoelectric composite medium-pressure drum cable; Also have, this patent is by the construction of cable reasonable in design and formulate rational processing technology, as conductor strand strand to, layer strand to and the control of the control of lay ratio, stranding lay ratio, cabling device a frame is wherein changed to the control etc. of design, inner sheath and the external vulcanization protecting degree of initiatively unwrapping wire design, braiding reinforced layer, bending property, tensile property, the resistance to twisting property of cable are ensured, the useful life of having improved cable; In addition, by adopting speciality CR sheath material, make cable possess good anti-tensile, oil resistant, the performance such as low temperature resistant, wear-resisting, improved the serviceability of cable, thus the life-span of also having improved cable.
Brief description of the drawings
Accompanying drawing 1 is photoelectric composite medium-pressure drum cable structural representation of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
Embodiment: ginseng as shown in Figure 1, a kind of rated voltage 3.6/6kV-12/20kV photoelectric composite medium-pressure drum cable, comprise and twist together three the power cores 1 and two ground cores 2 and the light unit 3 that form cable core 10, be coated on the speciality CR inner sheath 5 of cable core 10 outsides, be woven in the outside of speciality CR inner sheath 5 and embed reinforced layer 6 wherein, be coated on the speciality CR oversheath 7 of reinforced layer 6 outsides, reinforced layer 6 adopts the braiding of high tenacity polyester fiber silk to form, in cable core 10, three power cores 1 are along the circumferential direction near arrangement, in center gap between three power cores 1, be filled with semiconductive filler 4, semiconductive filler 4 adopts semi-conductive rubber, two ground cores 2 and light unit 3 all along the circumferential direction interval dispersed arrangement between the outside of adjacent two power cores 1, each ground core 2 with light unit 3 respectively near the power core 1 of living corresponding both sides, as Fig. 1.Each power core 1 includes power line core conductor 11, wrapped isolation strip on power line core conductor 11, wrap in semiconductive conductor shield 12 on isolation strip, wrap in semiconductive conductor shield 12 outsides insulating barrier 13, wrap in the semiconductive insulation screen 14 of insulating barrier 13 outsides, insulating barrier 13 adopts ethylene-propylene rubber layer.Each ground core 2 includes ground wire core conductor 21, wraps in the semiconductive coating layer 22 of ground wire core conductor 21 outsides, light unit 3 comprises the loose sleeve pipe 31 of establishing optical fiber in stranded formation optical cable core multiple, prick the water blocking yarn of optical cable core outside, be coated on water blocking yarn outside can fast-curing chlorinated polyethylene rubber sheath 32, in gap in each loose sleeve pipe 31, be all filled with the compound of thixotropic, in optical cable core, in the internal clearance between multiple loose sleeve pipes 31, fill nonmetallic stiffener.In the present embodiment, the material of loose sleeve pipe 31 adopts polybutylene terephthalate (PBT) plastics, also can adopt other plastics, and water blocking yarn adopts water resistance aramid fiber, and the compound of thixotropic adopts ointment, and nonmetallic stiffener adopts aramid fiber yarn.
The inner sheath 5 of cable, oversheath 7 all adopts speciality CR material to make, the material component of speciality CR material and content are by weight percentage: neoprene rubber 45%-55%, crosslinking agent tetramethylthiuram disulfide 1%-2%, vulcanization accelerator 2-benzothiazolyl mercaptan 0.5%-1.0%, age resistor 2-mercaptobenzimidazole 1.0%-2.0%, age resistor N, N'-bis-(β-naphthyl) p-phenylenediamine (PPD) 0.1%-0.3%, stearic acid 0.3%-0.7%, paraffin 1.0%-2.0%, zinc oxide 2.5%-3.5%, reinforcing agent mixed gas carbon black 8%-15%, filler talcum powder 8%-15%, filler calcium carbonate 15%-25%, di-n-octyl sebacate 4%-6%.The preparation method of speciality CR material comprises the following steps: (1) is by neoprene rubber 45%-55% mixing 5min-6min in 100 DEG C of-120 DEG C of banburies, mixing even; (2) in banbury, add again stearic acid 0.3%-0.7%, paraffin 1.0%-2.0%, zinc oxide 2.5%-3.5%, mixed gas carbon black 8%-15%, filler talcum powder 8%-15%, filler calcium carbonate 15%-25%, age resistor N, N'-bis-(betanaphthyl) p-phenylenediamine (PPD) 0.1%-0.3%, age resistor 2-mercaptobenzimidazole 1.0%-2.0%, mixing 2min-3min; (3) then in banbury, add di-n-octyl sebacate 4%-6%, mixing 1min-5min; (4) finally in banbury, add tetramethylthiuram disulfide 1%-2%, promoter 2-benzothiazolyl mercaptan 0.5%-1.0%, mixing 0.5min-1.5min, then discharges glue stuff compounding; (5) by glue stuff compounding thin-pass 1-2 time in mill, put glue 2-3 time simultaneously, then on tri-roll press machine, open bar slice, the rubber page of output is cooling through chill roll, crosses after talcum powder case, makes finished product speciality CR material.
In speciality CR sheath material, neoprene rubber has formed base-material, coordinates the various auxiliary agents such as age resistor, reinforcing agent, filler, crosslinking agent, vulcanization accelerator simultaneously, the performance of comprehensive plurality of raw materials, learn from other's strong points to offset one's weaknesses, there is excellent UV resistant, the performance such as low temperature resistant, wear-resisting, ageing-resistant.Prove by experiment, speciality CR sheath material properties is qualified, specifically in table 1.
Table 1 speciality CR performance index
Can fast-curing chlorinated polyethylene rubber sheath 32 in light unit 3, made by chlorinated polyethylene rubber material.The material component of this chlorinated polyethylene rubber material and content are by weight percentage: haloflex rubber 35%-45%, stabilizer magnesium oxide 4%-6%, second base lead sulfate 0.6%-1.0%, lead sulfate tribasic 1.0%-1.5%, paraffin 1.0%-1.5%, chlorinated paraffin wax 5.5%-6.5%, age resistor 2, 2, 4-trimethyl-1, 2-dihyaroquinoline condensate 0.1%-0.3%, reinforcing agent carbon black 15%-25%, fire retardant antimony oxide 3%-5%, filler talcum powder 3%-5%, filler calcium carbonate 6%-10%, the reinforcement filler White Carbon black 3%-5% that holds concurrently, vulcanization aid iso-cyanuric acid triallyl ester 1%-3%, vulcanizing agent cumyl peroxide 1.5%-4%.The preparation method of this chlorinated polyethylene rubber material comprises the following steps: (1) is by haloflex rubber 35%-45% mixing 5min-6min in 100 DEG C of-120 DEG C of banburies, mixing even; (2) in banbury, add again magnesium oxide 4%-6%, second base lead sulfate 0.6%-1.0%, lead sulfate tribasic 1.0%-1.5%, paraffin 1.0%-1.5%, age resistor 2,2,4-trimethyl-1,2-dihyaroquinoline condensate 0.1%-0.3%, reinforcing agent carbon black 15%-25%, fire retardant antimony oxide 3%-5%, filler talcum powder 3%-5%, filler calcium carbonate 6%-10%, the reinforcement filler White Carbon black 3%-5% that holds concurrently, mixing 2min-3min; (3) then in banbury, add chlorinated paraffin wax 5.5%-6.5%, mixing 3min-5min; (4) finally in banbury, add vulcanization aid iso-cyanuric acid triallyl ester 1%-3%, vulcanizing agent cumyl peroxide 1.5%-4%, mixing 0.5min-1.5min, then discharges glue stuff compounding; (5) by glue stuff compounding thin-pass 1-2 time in mill, put glue 2-3 time simultaneously, then on tri-roll press machine, open bar slice, the rubber page of output is cooling through chill roll, crosses after talcum powder case, makes finished product chlorinated polyethylene rubber material.
In chlorinated polyethylene rubber sheath material, haloflex rubber has formed base-material, coordinate the various auxiliary agents such as age resistor, stabilizer, reinforcing agent, fire retardant, filler, vulcanizing agent simultaneously, the component that has wherein improved especially vulcanizing agent reaches fast-curing object, the performance of so comprehensive plurality of raw materials, learn from other's strong points to offset one's weaknesses, in meeting chlorinated polyethylene sheath material property, improved the sulfuration efficiency of material.Prove by experiment, this chlorinated polyethylene rubber material can be 130 ~ 160 DEG C of temperature, and the time is to reach short vulcanization between 5-10min, and properties is qualified, specifically in table 2.
Table 2 short vulcanization haloflex rubber performance index
In the time of processing photoelectric composite medium-pressure drum cable, first process respectively power core 1, core 2 and light unit 3.Power core 1, the conductor in core 2 select tinned copper wire or bare copper wire, conductor filament diameter is thinner, flexibility is better, the softness of conductor and degree of crook are determining bending and the soft degree of cable, therefore, in cable conductor design, need to be especially particular about.In addition, when conductor is stranded, between adjacent two layers, adopt contrary strand to, the strand of every layer to the strand of strand in respective layer to contrary, the lay ratio of strand is controlled at 12-14 doubly, outermost lay ratio is controlled at 10-12 doubly, the lay ratio of every layer is all than adjacent outer field many 2 numerical value from outside to inside, and the very resistance to distorting stress of the stranded like this conductor structure making, has good axial compression and bending strength.
In power core 1, for ensureing the electric property of cable, in the outer wrapped one deck semiconductive rubber strap of conductor 11, i.e. isolation strip.For ensureing partial discharge and the withstand voltage test of midium voltage cable, in the outside of conductor isolation strip three-layer co-extruded go out semiconductive conductor screen material, Insulation Material, semiconductive insulation shielding material, sulfuration process by curing tube is according to normal control, sulfuration completely, forms semiconductive conductor shield 12, insulating barrier 13, semiconductive insulation screen 14.Insulating barrier 13 adopts high-performance ethylene-propylene rubber layer, performance requirement: temperature resistant grade must be between-40 DEG C～90 DEG C, and the variation that can bear like this day and night temperature also can be used in the winter of the summer of heat and severe cold simultaneously; In addition, there is good electric property and excellent mechanical and physical performance.
General midium voltage cable also needs layer of metal shielding outward at semiconductive insulation screen, and photoelectric composite medium-pressure drum cable, due to special operational environment, as added layer of metal shielding at skin, can reduce the useful life of whole cable.Therefore, ground core 2 is resolved in the metallic shield outside insulation by we, and being dispersed in master core is the both sides of power core 1, therefore need to extrude one deck semiconductive shieldin material outside ground core 2, form semiconductive coating layer 22, ensured that so the outer all cores of insulation semi-conductive screen are iso-electric.
In light unit 3, fiber number is preferably 6,12,18 or 24 cores, can be also other core numbers that user requires, and optical fiber should be made up of the similar silica optical fiber by coat.Should use the produced optical fiber of same design, same material and same process with batch product.In light unit, coated fiber should be placed in the loose sleeve pipe of thermoplastic formation, and the remaining length of optical fiber in loose sleeve pipe should be uniform and stable.Pine shell material can be used polybutylene terephthalate (PBT) (being called for short PBT) plastics or other suitable plastics.Gap in loose sleeve pipe should be filled a kind of compound of thixotropic continuously, and filler should not damage optical fiber transmission property and useful life.In light unit, should comprise enough non-metallic stiffener, in order to increase the tensile property of optical cable.In this cable, regulation stiffener is aramid fiber, and its Young's modulus should be not less than 90Gpa.In the time of processing light unit 3; extrude outward and form PBT pine sleeve pipe 31 at optical fiber; and in gap in loose sleeve pipe 31, fill high-flash ointment and play heat insulation and protective effect; then the loose sleeve pipe 31 of establishing optical fiber in multiple is carried out to stranded formation optical cable core; wherein in the internal clearance between multiple loose sleeve pipes 31, be filled with stiffener aramid fiber, to ensure the tensile strength of light unit.In the time that multiple loose sleeve pipes 31 are stranded, twisted layer should be by the identical 5-12 pipe loose tube fiber of external diameter the surrounding with suitable pitch Ceng Jiao center stiffener aramid fiber.Layer strand can be spiral strand, can be also SZ strand.Processing after optical cable core, upper water resistance aramid fiber is pricked in the outside of this optical cable core, finally on water resistance aramid fiber, extrude above-mentioned chlorinated polyethylene rubber material, this chlorinated polyethylene rubber material is at 130 DEG C ~ 160 DEG C, short vulcanization between 5 ~ 10min, form chlorinated polyethylene rubber sheath 32, fast-curing chlorinated polyethylene rubber sheath 32, can ensure the stable of optical fiber property in the course of processing.
Process power core 1, behind core 2 and light unit 3, on cabling device by three power cores 1, two ground cores 2 and a light unit 3 according to the lay ratio stranding together that is not more than 10 times, form cable core 10, in stranding process, also in the center gap of cable core 10, fill out semiconductive packing material, for example semi-conductive rubber.On cabling device, because the optical fiber in light unit can not be stressed, so the corresponding frame of cabling device is set to initiatively unwrapping wire, ensure optical fiber property; The lay ratio of stranding is not more than 10 times, can ensure like this bending property of whole cable, and ensures the uniformity of cable core in loading process, indirectly extends the useful life of cable.In stranding process, cable core 10 is outer does not need band, can after follow-up inner sheath 5 is extruded, ensure like this relative position of cable core 10, and the in use relative slippage of core is smaller, and useful life is long.
On cable core 10, extrude above-mentioned speciality CR material, form speciality CR inner sheath 5, control the state of cure (vulcanization) of this speciality CR inner sheath 5 at 40%-60%.Then form reinforced layer 6 in the braiding of the outside of speciality CR inner sheath 5, the count of this reinforced layer is controlled at 30%-50%, angle of weave is controlled at 40 °-60 °, because the state of cure (vulcanization) of speciality CR inner sheath 5 is controlled at 40%-60%, the reinforced layer 6 of braiding can be embedded in speciality CR inner sheath 5.Finally on reinforced layer 6, extrude above-mentioned speciality CR material, form speciality CR oversheath 7, this speciality CR oversheath 7 carries out 100% complete cure, now be equivalent to speciality CR inner sheath 5 to carry out again once sulfuration, the common post-cure pipe crossed of inner sheath 5, carried out post-cure, ensured the integraty of inner sheath 5, reinforced layer 6, oversheath 7, improve the tensile strength of whole cable, extended cable useful life.The theoretical life-span of photoelectric composite medium-pressure drum cable of working it out according to above technique can reach 3 years, and in prior art, the normal photoelectric composite medium-pressure drum cable life-span is between 6 months ~ 1 year.
Design one deck braiding reinforced layer 6 between inner sheath 5 and oversheath 7, material adopts high tenacity polyester fiber silk, this material time does not have great elasticity in braiding, and this material has flattening trend while being woven on line, gives in our actual production process and has brought many troubles.By our tracing observation, adopt suitable tension force control, make high tenacity polyester fiber silk in the time of braiding, be not easy broken string, adopt suitable doubling radical, make the count of high tenacity polyester fiber silk, angle of weave suitable, thereby ensured the adhesive between inner sheath 5 and oversheath 7, play humidification, improve the tensile strength of whole cable, eliminate or reduce the stress of cable in the time reversing, improve useful life of cable.
The photoelectric composite medium-pressure drum cable of this patent, employing can fast-curing chlorinated polyethylene rubber material as light unit sheath, in rubber extruding process, ensure optical fiber property, thereby improved properties and the useful life of photoelectric composite medium-pressure drum cable; Also have, this patent is by the construction of cable reasonable in design and formulate rational processing technology, as conductor strand strand to, layer strand to and the control of the control of lay ratio, stranding lay ratio, cabling device a frame is wherein changed to the control etc. of design, inner sheath and the external vulcanization protecting degree of initiatively unwrapping wire design, braiding reinforced layer, bending property, tensile property, the resistance to twisting property of cable are ensured, the useful life of having improved cable; In addition, by adopting speciality CR sheath material, make cable possess good UV resistant, oil resistant, the performance such as low temperature resistant, wear-resisting, improved the serviceability of cable, thus the life-span of also having improved cable.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (5)
1. the process for the manufacture of photoelectric composite medium-pressure drum cable, it is characterized in that: comprise and twist together the multiple power cores and multiple ground core and at least one the light unit that form cable core, be coated on the speciality CR inner sheath of described cable core outside, be woven in the outside of described speciality CR inner sheath and embed reinforced layer wherein, be coated on the speciality CR oversheath of described reinforced layer outside, in described cable core, described multiple power core is along the circumferential direction near arrangement, in center gap between described multiple power core, be filled with semiconductive filler, described multiple ground core and at least one light unit all along the circumferential direction interval dispersed arrangement between the outside of adjacent two described power cores, described ground core with described smooth unit respectively near the described power core of living corresponding both sides, each described power core includes power line core conductor, wrapped isolation strip on described power line core conductor, wrap in the semiconductive conductor shield on described isolation strip, wrap in the insulating barrier of described semiconductive conductor shield outside, wrap in the semiconductive insulation screen of described insulating barrier outside, each described ground core includes ground wire core conductor, wrap in the semiconductive coating layer of described ground wire core conductor outside, described smooth unit comprises the loose sleeve pipe of establishing optical fiber in stranded formation optical cable core multiple, prick the water blocking yarn in described optical cable core outside, what be coated on described water blocking yarn outside can fast-curing chlorinated polyethylene rubber sheath, in gap in each described loose sleeve pipe, be all filled with the compound of thixotropic, in described optical cable core, in internal clearance between multiple described loose sleeve pipes, fill nonmetallic stiffener,
In described power line core conductor, described ground wire core conductor, between adjacent two layers, adopt contrary strand to, the strand of every layer to the strand of strand in respective layer to contrary, the lay ratio of strand is controlled at 12-14 doubly, outermost lay ratio is controlled at 10-12 doubly, and the lay ratio of every layer is all than adjacent outer field many 2 numerical value from outside to inside;
The lay ratio of described multiple power core and multiple ground core and at least one light unit twisted synthesizing cable is not more than 10 times;
Described reinforced layer adopts dacron thread braiding reinforced layer, described semiconductive filler adopts semi-conductive rubber, insulating barrier in described power core adopts ethylene-propylene rubber layer, the material of described loose sleeve pipe adopts polybutylene terephthalate (PBT) plastics, described water blocking yarn adopts water resistance aramid fiber, the compound of described thixotropic adopts ointment, and described nonmetallic stiffener adopts aramid fiber yarn;
Described power core has three, and described ground core has two, and three described power cores are along the circumferential direction near arrangement, between the outside of every adjacent two described power cores near being arranged with a described ground core or light unit;
Comprise the following steps:
(1) process respectively described power core, described ground core and described smooth unit, the described power core processing, conductor in described ground core, between adjacent two layers, adopt contrary strand to, the strand of every layer to the strand of strand in respective layer to contrary, the lay ratio of strand is controlled at 12-14 doubly, outermost lay ratio is controlled at 10-12 doubly, the lay ratio of every layer is all than adjacent outer field many 2 numerical value from outside to inside, in the time of the described smooth unit of processing, first process described optical cable core, then prick water blocking yarn in the outside of this optical cable core, finally on described water blocking yarn, extrude chlorinated polyethylene rubber material, this chlorinated polyethylene rubber material is at 130 DEG C ~ 160 DEG C, short vulcanization between 5 ~ 10min, form described chlorinated polyethylene rubber sheath, the material component of described chlorinated polyethylene rubber material and content are by weight percentage:
Haloflex rubber 35%-45%,
Magnesium oxide 4%-6%,
Second base lead sulfate 0.6%-1.0%,
Lead sulfate tribasic 1.0%-1.5%,
Paraffin 1.0%-1.5%,
Chlorinated paraffin wax 5.5%-6.5%,
Age resistor 2,2,4-trimethyl-1,2-dihyaroquinoline condensate 0.1%-0.3%,
Reinforcing agent carbon black 15%-25%,
Fire retardant antimony oxide 3%-5%,
Filler talcum powder 3%-5%,
Filler calcium carbonate 6%-10%,
The reinforcement filler White Carbon black 3%-5% that holds concurrently,
Vulcanization aid iso-cyanuric acid triallyl ester 1%-3%,
Vulcanizing agent cumyl peroxide 1.5%-4%;
(2) on cabling device by multiple described power cores, multiple described ground core and described at least one light unit according to the lay ratio stranding together that is not more than 10 times, form described cable core, in stranding process, also in the center gap of described cable core, fill out semiconductive packing material, on cabling device, because the optical fiber in light unit can not be stressed, so the corresponding frame of cabling device is set to initiatively unwrapping wire;
(3) on described cable core, extrude speciality CR material, form described speciality CR inner sheath, control the state of cure (vulcanization) of this speciality CR inner sheath at 40%-60%;
(4) form reinforced layer in the braiding of the outside of described speciality CR inner sheath, the count of this reinforced layer is controlled at 30%-50%, angle of weave is controlled at 40 °-60 °, because the state of cure (vulcanization) of described speciality CR inner sheath is controlled at 40%-60%, the reinforced layer of braiding can be embedded in described speciality CR inner sheath;
(5) on described reinforced layer, extrude speciality CR material, form described speciality CR oversheath, this speciality CR oversheath carries out 100% complete cure, now be equivalent to described speciality CR inner sheath to carry out again once sulfuration, the integraty that has ensured inner sheath, reinforced layer, oversheath, the material component of the speciality CR material in described inner sheath, described oversheath and content is by weight percentage:
Neoprene rubber 45%-55%,
Tetramethylthiuram disulfide 1%-2%,
Promoter 2-benzothiazolyl mercaptan 0.5%-1.0%,
Age resistor 2-mercaptobenzimidazole 1.0%-2.0%,
Age resistor N, N'-bis-(betanaphthyl) p-phenylenediamine (PPD) 0.1%-0.3%,
Stearic acid 0.3%-0.7%,
Paraffin 1.0%-2.0%,
Zinc oxide 2.5%-3.5%,
Mixed gas carbon black 8%-15%,
Filler talcum powder 8%-15%,
Filler calcium carbonate 15%-25%,
Di-n-octyl sebacate 4%-6%.
2. process according to claim 1, it is characterized in that: in step (1), in the time of the described power line core of processing, first process conductor, then wrapped isolation strip on conductor, then in the outside of isolation strip three-layer co-extruded go out semiconductive conductor screen material, Insulation Material, semiconductive insulation shielding material, sulfuration completely, forms described semiconductive conductor shield, described insulating barrier, described semiconductive insulation screen.
3. process according to claim 1, it is characterized in that: in step (1), in the time of the optical cable core of the described smooth unit of processing, first extrude outward and form loose sleeve pipe at optical fiber, and factice for filling in gap in loose sleeve pipe, then the loose sleeve pipe of establishing optical fiber in multiple is carried out to the described optical cable core of stranded formation, wherein in the internal clearance between multiple loose sleeve pipes, be filled with stiffener aramid fiber.
4. process according to claim 1, is characterized in that: in step (1), in described smooth unit, the preparation method of the material of chlorinated polyethylene rubber sheath comprises the following steps:
(1) by described haloflex rubber 35%-45% mixing 5min-6min in 100 DEG C of-120 DEG C of banburies, mixing even;
(2) in described banbury, add again described magnesium oxide 4%-6%, described second base lead sulfate 0.6%-1.0%, described lead sulfate tribasic 1.0%-1.5%, described paraffin 1.0%-1.5%, described age resistor 2,2,4-trimethyl-1,2-dihyaroquinoline condensate 0.1%-0.3%, described reinforcing agent carbon black 15%-25%, described fire retardant antimony oxide 3%-5%, described filler talcum powder 3%-5%, described filler calcium carbonate 6%-10%, the described reinforcement filler White Carbon black 3%-5% that holds concurrently, mixing 2min-3min;
(3) then in described banbury, add described chlorinated paraffin wax 5.5%-6.5%, mixing 3min-5min;
(4) finally in described banbury, add described vulcanization aid iso-cyanuric acid triallyl ester 1%-3%, described vulcanizing agent cumyl peroxide 1.5%-4%, mixing 0.5min-1.5min, then discharges glue stuff compounding;
(5) by described glue stuff compounding thin-pass 1-2 time in mill, put glue 2-3 time simultaneously, then on tri-roll press machine, open bar slice, the rubber page of output is cooling through chill roll, crosses after talcum powder case, makes finished product chlorinated polyethylene rubber material.
5. process according to claim 1, is characterized in that: in step (5), the preparation method of described speciality CR material comprises the following steps:
(1) by described neoprene rubber 45%-55% mixing 5min-6min in 100 DEG C of-120 DEG C of banburies, mixing even;
(2) in described banbury, add again described stearic acid 0.3%-0.7%, described paraffin 1.0%-2.0%, described zinc oxide 2.5%-3.5%, described mixed gas carbon black 8%-15%, described filler talcum powder 8%-15%, described filler calcium carbonate 15%-25%, described age resistor N, N'-bis-(β-naphthyl) p-phenylenediamine (PPD) 0.1%-0.3%, described age resistor 2-mercaptobenzimidazole 1.0%-2.0%, mixing 2min-3min;
(3) then in described banbury, add described di-n-octyl sebacate 4%-6%, mixing 1min-5min;
(4) finally in described banbury, add described tetramethylthiuram disulfide 1%-2%, described promoter 2-benzothiazolyl mercaptan 0.5%-1.0%, mixing 0.5min-1.5min, then discharges glue stuff compounding;
(5) by described glue stuff compounding thin-pass 1-2 time in mill, put glue 2-3 time simultaneously, then on tri-roll press machine, open bar slice, the rubber page of output is cooling through chill roll, crosses after talcum powder case, makes finished product speciality CR material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410211950.9A CN104036885B (en) | 2012-07-13 | 2012-07-13 | It is combined in 3.6/6kV-12/20kV presses the process of drum cable for manufacturing photoelectricity |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410211950.9A CN104036885B (en) | 2012-07-13 | 2012-07-13 | It is combined in 3.6/6kV-12/20kV presses the process of drum cable for manufacturing photoelectricity |
| CN201210243482.4A CN102760519B (en) | 2012-07-13 | 2012-07-13 | Photoelectric composite medium-voltage drum cable with rated voltage of 3.6/6kV-12/20kV and processing technology thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210243482.4A Division CN102760519B (en) | 2012-07-13 | 2012-07-13 | Photoelectric composite medium-voltage drum cable with rated voltage of 3.6/6kV-12/20kV and processing technology thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104036885A true CN104036885A (en) | 2014-09-10 |
| CN104036885B CN104036885B (en) | 2016-08-17 |
Family
ID=51467625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410211950.9A Active CN104036885B (en) | 2012-07-13 | 2012-07-13 | It is combined in 3.6/6kV-12/20kV presses the process of drum cable for manufacturing photoelectricity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104036885B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376922A (en) * | 2014-11-25 | 2015-02-25 | 四川明星电缆股份有限公司 | Manufacturing method of rubber jacketed flexible cables for shield tunneling machines |
| CN104867573A (en) * | 2015-03-27 | 2015-08-26 | 江苏亨通电力电缆有限公司 | Mining shielding type trailing cable and manufacturing process thereof |
| CN104910534A (en) * | 2015-06-09 | 2015-09-16 | 无锡工艺职业技术学院 | Components of anti-tensile insulated cable sheath and preparation process thereof |
| CN105070367A (en) * | 2015-06-24 | 2015-11-18 | 江苏亨通电力电缆有限公司 | Novel opto-electronic combined medium-voltage trailing cable for port machinery and manufacturing process thereof |
| CN105161186A (en) * | 2015-06-24 | 2015-12-16 | 江苏亨通电力电缆有限公司 | High-strength towing-used photoelectric composite cable and manufacture method thereof |
| CN105390200A (en) * | 2015-12-10 | 2016-03-09 | 泰丰线缆集团有限公司 | Flexible fireproof cable and preparation method therefor |
| CN106531306A (en) * | 2016-12-31 | 2017-03-22 | 无锡江南电缆有限公司 | 0.6/1 kV waterproof tensile power cable for shallow seas |
| CN107086061A (en) * | 2017-05-03 | 2017-08-22 | 安徽凌宇电缆科技有限公司 | A kind of new harbour corrosion-resistant midium voltage cable that blocks water |
| CN111696720A (en) * | 2020-04-24 | 2020-09-22 | 上海蓝昊电气有限公司 | Lightweight reel high-voltage cable and preparation method thereof |
| CN114410022A (en) * | 2022-03-11 | 2022-04-29 | 桂林理工大学 | Semi-conductive rubber and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201007926Y (en) * | 2006-12-25 | 2008-01-16 | 江苏上上电缆集团有限公司 | Anti-distortion wound roll cable having electric power and optical fiber communication function |
| CN201689204U (en) * | 2010-06-04 | 2010-12-29 | 长飞光纤光缆有限公司 | Composite layer twisted type optic cable |
| CN201765867U (en) * | 2010-09-07 | 2011-03-16 | 远东电缆有限公司 | Enhanced flat cable |
| US20120008906A1 (en) * | 2010-07-06 | 2012-01-12 | Hon Hai Precision Industry Co., Ltd. | Optical-electrical hybrid transmission cable |
-
2012
- 2012-07-13 CN CN201410211950.9A patent/CN104036885B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201007926Y (en) * | 2006-12-25 | 2008-01-16 | 江苏上上电缆集团有限公司 | Anti-distortion wound roll cable having electric power and optical fiber communication function |
| CN201689204U (en) * | 2010-06-04 | 2010-12-29 | 长飞光纤光缆有限公司 | Composite layer twisted type optic cable |
| US20120008906A1 (en) * | 2010-07-06 | 2012-01-12 | Hon Hai Precision Industry Co., Ltd. | Optical-electrical hybrid transmission cable |
| CN201765867U (en) * | 2010-09-07 | 2011-03-16 | 远东电缆有限公司 | Enhanced flat cable |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376922A (en) * | 2014-11-25 | 2015-02-25 | 四川明星电缆股份有限公司 | Manufacturing method of rubber jacketed flexible cables for shield tunneling machines |
| CN104867573A (en) * | 2015-03-27 | 2015-08-26 | 江苏亨通电力电缆有限公司 | Mining shielding type trailing cable and manufacturing process thereof |
| CN104910534A (en) * | 2015-06-09 | 2015-09-16 | 无锡工艺职业技术学院 | Components of anti-tensile insulated cable sheath and preparation process thereof |
| CN105070367A (en) * | 2015-06-24 | 2015-11-18 | 江苏亨通电力电缆有限公司 | Novel opto-electronic combined medium-voltage trailing cable for port machinery and manufacturing process thereof |
| CN105161186A (en) * | 2015-06-24 | 2015-12-16 | 江苏亨通电力电缆有限公司 | High-strength towing-used photoelectric composite cable and manufacture method thereof |
| CN105390200A (en) * | 2015-12-10 | 2016-03-09 | 泰丰线缆集团有限公司 | Flexible fireproof cable and preparation method therefor |
| CN106531306A (en) * | 2016-12-31 | 2017-03-22 | 无锡江南电缆有限公司 | 0.6/1 kV waterproof tensile power cable for shallow seas |
| CN107086061A (en) * | 2017-05-03 | 2017-08-22 | 安徽凌宇电缆科技有限公司 | A kind of new harbour corrosion-resistant midium voltage cable that blocks water |
| CN111696720A (en) * | 2020-04-24 | 2020-09-22 | 上海蓝昊电气有限公司 | Lightweight reel high-voltage cable and preparation method thereof |
| CN111696720B (en) * | 2020-04-24 | 2021-10-29 | 上海蓝昊电气股份有限公司 | Lightweight reel high-voltage cable and preparation method thereof |
| CN114410022A (en) * | 2022-03-11 | 2022-04-29 | 桂林理工大学 | Semi-conductive rubber and preparation method thereof |
| CN114410022B (en) * | 2022-03-11 | 2023-05-23 | 桂林理工大学 | Semiconductive rubber and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104036885B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102760519B (en) | Photoelectric composite medium-voltage drum cable with rated voltage of 3.6/6kV-12/20kV and processing technology thereof | |
| CN104036885A (en) | Method for manufacturing photoelectric composite medium-voltage drum cable | |
| CN104036859B (en) | Resistance to torsion photoelectric composite medium-pressure drum cable | |
| CN202758651U (en) | Photoelectric composite medium-voltage reel cable with rated voltage of 3.6/6kV-12/20kV | |
| AU2006344002B2 (en) | Cable and process for manufacturing the same | |
| CN105336405A (en) | Wind power generation flexible cable with nominal voltage of 6-35 kV and manufacturing method thereof | |
| CN201166996Y (en) | Twist resistant rubber cover flexible cable for wind power generation | |
| CN104297875A (en) | Equipotential optical fiber unit for high-voltage photoelectric composite cable and manufacturing method thereof | |
| CN101859610A (en) | Cable insulating and sheathing materials and cable for shield machine | |
| CN207182975U (en) | A kind of high-strength tensile low temperature resistant cable | |
| CN107057144A (en) | A kind of sheath material in port machine composite cable and preparation method thereof | |
| CN202694975U (en) | Power cable special for oil well | |
| CN203760189U (en) | Soft type tow chain system control electric cable having 450/750 V rated voltage | |
| CN104376922A (en) | Manufacturing method of rubber jacketed flexible cables for shield tunneling machines | |
| CN204904857U (en) | Shield constructs electromechanical cable | |
| CN107945939A (en) | A kind of insulation of second third blocks water, fire-retardant flexible electric power cable and preparation method thereof | |
| CN205140570U (en) | Cold -resistant shield of high voltage constructs electromechanical cable | |
| CN207765191U (en) | A kind of lightweight resist bending cable | |
| CN109360675B (en) | High-current-carrying high-strength shield tunneling machine cable | |
| CN107353458A (en) | Preparation technology for the optoelectronic composite cable of tidal power generation | |
| CN101923918A (en) | Flexible cable for coal mining machine | |
| CN107353457A (en) | Tidal power generation optoelectronic composite cable | |
| CN203480905U (en) | Drum cable | |
| CN206312628U (en) | A kind of superelevation tensile strength weather resistant charging pile cable | |
| CN203150223U (en) | Hydraulic equipment special-purpose extraordinary combination flexible 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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |