CN101667469A - Large wire diameter special insulating conductor and manufacture process thereof - Google Patents
Large wire diameter special insulating conductor and manufacture process thereof Download PDFInfo
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- CN101667469A CN101667469A CN200810146484A CN200810146484A CN101667469A CN 101667469 A CN101667469 A CN 101667469A CN 200810146484 A CN200810146484 A CN 200810146484A CN 200810146484 A CN200810146484 A CN 200810146484A CN 101667469 A CN101667469 A CN 101667469A
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Abstract
The invention belongs to the field of nuclear grade special insulating conductor, in particular to a large wire diameter special insulating conductor and a manufacture process thereof, which aim to solve the problems that the prior extruding technology cannot realize insulation on large wire diameter conductors, and the prior insulating conductor has reduced insulativity after long-term use. The large wire diameter special insulating conductor consists of a large wire diameter inner conductor (1) and an insulating layer, wherein the inner conductor is made of a copper material; the insulatinglayer adopting high performance engineering plastics is attached to the conductor. The process for manufacturing the large wire diameter special insulating conductor mainly comprises five steps, namely aligning the inner conductor, processing the surface of the inner conductor, fusing an insulating material, coating the insulating material on the conductor, and cooling and solidifying. The conductor and the process have the advantages of excellent environment adaptability, long service life, excellent insulating performance, good surface quality, feasible die design, simplicity and convenience, even size of the insulating layer, no uneven internal stress generation, and fatigue life improvement.
Description
Technical field
The invention belongs to the extraordinary field of insulating conductors of nuclear level, be specifically related to a kind of big line diameter special insulated electric conductor and production technology thereof.
Background technology
The extraordinary insulated electric conductor of nuclear level is a kind of extraordinary insulated electric conductor that is specifically designed under the nuclear environment condition.The extraordinary insulated cable of at present common nuclear level mainly contains fluoro-40, silicon rubber, polyethylene, ethylene propylene rubber insulated cable and polyimide film wrapped-high temperature sintering insulated cable etc.There is following shortcoming respectively in these insulated cables:
(1) the main body insulating material of insulated cables such as fluoro-40, silicon rubber, polyethylene, ethylene-propylene rubber itself does not possess anti-flammability, needs to add a certain amount of fire retardant during fabrication.Owing to the adding of fire retardant, reduced mechanical performance, electric property and the anti-radiation property of insulating barrier; In addition the acid-alkali-corrosive-resisting of above-mentioned insulated electric conductor and high temperature resistant hydrolysis performance a little less than.
(2) polyimide film wrapped-the high temperature sintering insulated cable is to use now to examine the class F insulation cable comparatively widely, it has radiation-resistant property and resistance to elevated temperatures preferably, but hydrolysis poor performance that it is high temperature resistant, in long-term the use, particularly under the LOCA of the nuclear power plant environment, insulation property will take place reduce, cause quality accident.In the electrical penetration product of French AUXITROL company, insulated electric conductor to the requirement of non-K1 class has all adopted polyimides as insulating material, and all adopted PEEK as insulating material to the little line footpath insulated electric conductor of the requirement of K1 class, because its technology is limited, the big line footpath conductor of K1 class still adopts polyimides as insulating material.
At polyimide film wrapped-the extraordinary insulation of high temperature sintering cable can not be high temperature resistant, the problem of hydrolysis, all adopted the insulating layer material of special engineering plastics PEEK in " high temperature resistant and superheated vapor insulated electric conductor and production method thereof " that " high temperature resistant and superheated vapor insulated electric conductor " that " a kind of multi-functional cable/line " that Chinese patent CN2904214Y announces, CN2807413Y announce and CN1499537A announce, but these patent common ground all are to carry out the extrusion molding insulation at little line footpath conductor as electric wire.For the conductor of big line warp, as the conductor of size between 6～40mm, because conductor flexible relatively poor, and deadweight is bigger, and the cooperation that utilizes existing extrusion moulding production line and interface mould is can't realize the directly insulation of conductor of big line.
Summary of the invention
The objective of the invention is to solve the deficiencies in the prior art, a kind of big line diameter special insulated electric conductor and the production technology thereof of a kind of high temperature resistant, anti-irradiation and hydrolysis is provided.
The present invention is achieved in that
A kind of big line diameter special insulated electric conductor, wherein, described insulated electric conductor is made up of the inner wire and the insulating barrier in big line footpath, and wherein, inner wire is a copper material, and its diameter is 6～40mm, and insulating barrier adopts high performance engineering plastics to be coated on the conductor.
The thickness of insulating barrier is 0.1～0.6mm as mentioned above.
Copper material is oxygen-free copper or fine copper as mentioned above.
High performance plastics is polyether-ether-ketone or polyether sulfone as mentioned above.
A kind of production technology of big line diameter special insulated electric conductor, key step comprises:
1. the alignment inner wire is controlled in the scope of 0.0011mm/m its linearity;
2. handle the inner wire surface, make its smooth surface, no marking, and wipe the greasy dirt that the face of taking temperature is removed the surface;
3. molten insulation material makes insulating material be in molten condition;
4. conductor coated insulation material coats in the conductor equably with insulating material is smooth, and obtaining thickness is the insulating barrier of 0.1mm～0.6mm;
5. insulating barrier setting
According to actual needs, obtain the insulating barrier form meet the demands.
Aforesaid alignment inner wire is meant the stretching or manual alignment of inner wire.
Wipe the greasy dirt that the face of taking temperature is removed the surface with absolute ethyl alcohol or carbon tetrachloride in the surface treatment as mentioned above.
Adopt polyether-ether-ketone as insulating material as mentioned above in the molten insulation material step, to the screw rod top, cavity temperature is controlled at 320 ℃ to 390 ℃ from the screw feed section; Adopt polyether sulfone as insulating material in the described molten insulation material step, to the screw rod top, cavity temperature is controlled at 220 ℃ to 300 ℃ from the screw feed section.
In the conductor coated insulation material step, be the copper rod of 6mm～20mm as mentioned above, will again it be sent to the molten machine that squeezes of high temperature after its preheating earlier, directly it is sent into the molten machine that squeezes of high temperature without preheating greater than the copper rod in this line footpath for diameter.
In the insulating barrier setting step, for the PEEK material, insulating barrier adopts the gradient cooling system to carry out cooling curing as mentioned above, or heat-treats the form that acquisition meets the demands through the conductor after insulating barrier is solidified; For the PES material, insulating barrier adopts the gradient cooling system to carry out cooling curing.
The invention has the beneficial effects as follows:
Since adopted big line diameter special insulated electric conductor with the PEEK of anti-irradiation, fire-retardant and high-temperature index or PES as its insulating barrier, so the useful life that this conductor has fine environment adaptability and grows;
2. because to have adopted extrusion process that inner wire is carried out insulating barrier coated, so the insulation property of this special type insulated electric conductor are good, surface quality is good;
3. the present invention adopts the gradient cooling means, makes insulating barrier can not produce phenomenons such as internal stress is inhomogeneous, has improved fatigue life.
Description of drawings
Fig. 1 is that big line is directly examined the extraordinary insulated electric conductor schematic cross-section of level;
Among the figure: 1. the inner wire of big line footpath; 2. insulating barrier.
Embodiment
Embodiment to a kind of big line diameter special insulated electric conductor of the present invention and production technology thereof is introduced below in conjunction with accompanying drawing:
As shown in Figure 1, a kind of big line diameter special insulated electric conductor, inner wire 1 and insulating barrier 2 by big line footpath are formed, wherein, inner wire 1 is a copper material, copper material herein is meant oxygen-free copper or fine copper, and its diameter is 6mm～40mm, and insulating barrier 2 adopts high performance engineering plastics polyether-ether-ketone (PEEK) or polyether sulfone (PES) to be coated on the conductor; Its thickness is 0.1mm～0.6mm.
A kind of production technology of big line diameter special insulated electric conductor, concrete steps comprise:
(1) alignment inner wire
With the inner wire alignment, alignment herein is meant stretching or manual alignment, and its linearity is controlled in the scope of 0.0011mm/m;
(2) handle the inner wire surface
Inner wire 1 is carried out surface treatment, make its smooth surface, no marking, and wipe the greasy dirt that the face of taking temperature is removed the surface, available herein absolute ethyl alcohol or carbon tetrachloride carry out wiping;
(3) molten insulation material
The molten machine cavity temperature that squeezes of control high temperature makes insulating material be in molten condition:
When adopting PEEK as insulating material, to the screw rod top, cavity temperature is controlled at 320 ℃ to 390 ℃ from the screw feed section; Can be controlled in 320 ℃, 330 ℃, 340 ℃, 350 ℃, 360 ℃, 370 ℃, 380 ℃ or 390 ℃;
When adopting PES as insulating material, to the screw rod top, cavity temperature is controlled at 220 ℃ to 300 ℃ from the screw feed section; Can be controlled in 220 ℃, 230 ℃, 240 ℃, 250 ℃, 260 ℃, 270 ℃, 280 ℃, 290 ℃ or 300 ℃.
(4) with conductor coated insulation material
Start promotion, guidance system, copper rod is directly sent into the antiflux machine; Start the molten machine that squeezes of high temperature, extrude uniformly in the conductor insulating material is smooth; Control promotes, the speed of guidance system matches with the molten machine screw speed that squeezes of high temperature, use moving system that the molten machine mouth mould that squeezes of conductor and high temperature is kept axiality and is 0.05mm, the control conductor is kept motion at the uniform velocity stably, and obtaining thickness is the insulating barrier of 0.1mm～0.6mm;
For line directly is the copper rod of 6mm～20mm, should directly it be sent into the antiflux machine greater than the copper rod in this line footpath without preheating with it being sent to the molten machine that squeezes of high temperature after its preheating again; For the conductor in collinear footpath not, need to select different mouth mould fit dimensions carry out extruded insulation; Match the special type of acquisition thickness different insulative thickness in the 0.1mm～0.6mm scope coated conductor that insulate with the molten machine screw speed that squeezes of high temperature by the propelling of control corollary equipment such as conductor, the speed of guiding device;
(5) cooling curing
Under the effect of promotion, guidance system, conductor cools off through the gradient cooling system, make it be cooled to normal temperature, be solidified into insulating barrier 2, above-mentioned gradient cooling system is divided into a plurality of parts, the each several part water temperature is reduced successively by height, carries out the gradient cooling, problems such as arborizations, unbalanced stress occur after avoiding high-temperature insulating layer to cool off suddenly.
When the extrusion molding insulation of carrying out PEEK, by the different gradient types of cooling, cooperate with water-cooled as water temperature difference or air cooling, can obtain different shape as the coated conductor of the extraordinary insulation of the PEEK of setting attitude, amorphous state; When said method obtains the discontented full border of insulating barrier form and needs, also can obtain the insulating barrier form that meets the demands by the conductor that insulate after coated is heat-treated.
When the extrusion molding insulation of carrying out PES, obtain insulating barrier by the gradient type of cooling and solidify.
The extraordinary insulated electric conductor that this technology is made carries out dielectric strength and insulation resistance detection, and testing result sees the following form:
Insulated electric conductor dielectric strength and insulation resistance testing result that table 1. adopts a kind of big line diameter special insulated electric conductor of the present invention and production technology thereof to make
As seen from the above table, this insulated electric conductor has shown excellent electrical insulation capability.
Claims (10)
1. one kind big line diameter special insulated electric conductor, it is characterized in that: described insulated electric conductor is made up of the inner wire (1) and the insulating barrier (2) in big line footpath, and wherein, inner wire (1) is a copper material, its diameter is 6～40mm, and insulating barrier adopts high performance engineering plastics to be coated on the conductor.
2. a kind of big line diameter special insulated electric conductor according to claim 1, it is characterized in that: the thickness of described insulating barrier (2) is 0.1～0.6mm.
3. a kind of big line diameter special insulated electric conductor according to claim 1, it is characterized in that: described copper material is oxygen-free copper or fine copper.
4. a kind of big line diameter special insulated electric conductor according to claim 1, it is characterized in that: described high performance plastics is polyether-ether-ketone or polyether sulfone.
5. the production technology of one kind big line diameter special insulated electric conductor, key step comprises:
1. the alignment inner wire is controlled in the scope of 0.0011mm/m its linearity;
2. handle the inner wire surface, make its smooth surface, no marking, and wipe the greasy dirt that the face of taking temperature is removed the surface;
3. molten insulation material makes insulating material be in molten condition;
4. conductor coated insulation material coats in the conductor equably with insulating material is smooth, and obtaining thickness is the insulating barrier of 0.1～0.6mm;
5. insulating barrier setting
According to actual needs, obtain the insulating barrier form meet the demands.
6. the production technology of a kind of big line diameter special insulated electric conductor according to claim 5 is characterized in that: described alignment inner wire is meant the stretching or manual alignment of inner wire.
7. the production technology of a kind of big line diameter special insulated electric conductor according to claim 5 is characterized in that: wipe the greasy dirt that the face of taking temperature is removed the surface with absolute ethyl alcohol or carbon tetrachloride in the described surface treatment.
8. the production technology of a kind of big line diameter special insulated electric conductor according to claim 5, it is characterized in that: adopt polyether-ether-ketone in the described molten insulation material step as insulating material, to the screw rod top, cavity temperature is controlled at 320 ℃ to 390 ℃ from the screw feed section; Adopt polyether sulfone as insulating material in the described molten insulation material step, to the screw rod top, cavity temperature is controlled at 220 ℃ to 300 ℃ from the screw feed section.
9. the production technology of a kind of big line diameter special insulated electric conductor according to claim 5, it is characterized in that: in the described conductor coated insulation material step, for diameter is the copper rod of 6mm～20mm, with again it being sent to the molten machine that squeezes of high temperature after its preheating, directly it is sent into the antiflux machine without preheating earlier greater than the copper rod in this line footpath.
10. the production technology of a kind of big line diameter special insulated electric conductor according to claim 5, it is characterized in that: in the described insulating barrier setting step, for the PEEK material, insulating barrier adopts the gradient cooling system to carry out cooling curing, or heat-treats the form that acquisition meets the demands through the conductor after insulating barrier is solidified; For the PES material, insulating barrier adopts the gradient cooling system to carry out cooling curing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810146484A CN101667469A (en) | 2008-09-01 | 2008-09-01 | Large wire diameter special insulating conductor and manufacture process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810146484A CN101667469A (en) | 2008-09-01 | 2008-09-01 | Large wire diameter special insulating conductor and manufacture process thereof |
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| CN101667469A true CN101667469A (en) | 2010-03-10 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199879A (en) * | 2016-08-23 | 2016-12-07 | 深圳市特发信息光网科技股份有限公司 | A kind of butterfly optical cable metallic stiffening element surface plastic coating technique |
| CN107204215A (en) * | 2017-03-30 | 2017-09-26 | 常州八益电缆股份有限公司 | A kind of used in nuclear power station coaxial cable |
| CN107331449A (en) * | 2017-06-05 | 2017-11-07 | 常州八益电缆股份有限公司 | A kind of used in nuclear power station rod control rod position cable and its industrialization quantity-produced method |
| CN109065265A (en) * | 2018-08-14 | 2018-12-21 | 重庆瑞普电气实业股份有限公司 | A kind of production method of the motor winding wire of the resistance to electromagnetic radiation of corrosion-and high-temp-resistant |
| CN110323003A (en) * | 2019-07-20 | 2019-10-11 | 上海广茂特种线缆有限公司 | A kind of solid-core polyfluortetraethyleinsulating insulating low noise coaxial radio frequency cable |
-
2008
- 2008-09-01 CN CN200810146484A patent/CN101667469A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199879A (en) * | 2016-08-23 | 2016-12-07 | 深圳市特发信息光网科技股份有限公司 | A kind of butterfly optical cable metallic stiffening element surface plastic coating technique |
| CN107204215A (en) * | 2017-03-30 | 2017-09-26 | 常州八益电缆股份有限公司 | A kind of used in nuclear power station coaxial cable |
| CN107204215B (en) * | 2017-03-30 | 2019-11-12 | 常州八益电缆股份有限公司 | A kind of used in nuclear power station coaxial cable |
| CN107331449A (en) * | 2017-06-05 | 2017-11-07 | 常州八益电缆股份有限公司 | A kind of used in nuclear power station rod control rod position cable and its industrialization quantity-produced method |
| CN109065265A (en) * | 2018-08-14 | 2018-12-21 | 重庆瑞普电气实业股份有限公司 | A kind of production method of the motor winding wire of the resistance to electromagnetic radiation of corrosion-and high-temp-resistant |
| CN110323003A (en) * | 2019-07-20 | 2019-10-11 | 上海广茂特种线缆有限公司 | A kind of solid-core polyfluortetraethyleinsulating insulating low noise coaxial radio frequency cable |
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Open date: 20100310 |