CN106024102A - Nuclear power high temperature resistant radiation resistant signal transmission cable and manufacture method thereof - Google Patents
Nuclear power high temperature resistant radiation resistant signal transmission cable and manufacture method thereof Download PDFInfo
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- CN106024102A CN106024102A CN201610544584.8A CN201610544584A CN106024102A CN 106024102 A CN106024102 A CN 106024102A CN 201610544584 A CN201610544584 A CN 201610544584A CN 106024102 A CN106024102 A CN 106024102A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
- H01B7/0208—Cables with several layers of insulating material
- H01B7/0216—Two layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/10—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances metallic oxides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/20—Metal tubes, e.g. lead sheaths
- H01B7/207—Metal tubes, e.g. lead sheaths composed of iron or steel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
Abstract
The invention relates to a signal transmission cable and a manufacture method thereof, and particularly relates to a nuclear power high temperature resistant radiation resistant signal transmission cable and a manufacture method thereof. The cable successively comprises a conductor, an inner insulation layer, a shielding layer, an outer insulation layer and an outer sheath from inside out. The conductor is a copper core wire conductor. Inner and outer insulation layers are made of aluminium oxide, silicon dioxide or magnesium oxide. Aluminium oxide in inner and outer aluminium oxide insulation layers, silicon dioxide in inner and outer silicon dioxide insulation layers, or magnesium oxide in inner and outer magnesium oxide insulation layers comprises composition of 400 to 600 meshes, 200 to 400 meshes, and meshes below 200 and above 600. The cable provided by the invention has the performances of interference resistance, high temperature resistance and radiation resistance, and can meet the signal transmission requirement of a low-voltage and high-frequency signal under high temperature and high radiation.
Description
Technical field
The present invention relates to a kind of signal transmission cable and preparation method thereof, particularly relate to a kind of high temperature resistant radiation hardness of nuclear power
Signal transmission cable and preparation method thereof.
Background technology
Existing signal transmission cable kind is a lot, mainly includes by conductor, is extruded in the insulating barrier of conductive surface, shielding
Layer and oversheath etc. are constituted, and its resistance to elevated temperatures is poor.The insulation of classical signal handling cable and sheath mostly are organic high score
Sub-material, is followed successively by conductor, organic insulator, screen layer and organic restrictive coating from inside to outside.Such wire is only used for general
Logical place.Its shortcoming be organic insulation and restrictive coating is inflammable, the most aging, be difficult to tolerate high temperature, the work of cable can be made
Temperature and place are restricted, it is impossible to applied at high temperature high-radiation field.The most typically use polyethylene as insulation
Layer, polyethylene is Organic substance, and this material time length will be aging, does not have good high temperature resistant, a radiation resistance, uses
Life-span is the longest.In current nuclear power field, reactor core detection cable, signal conveying and control cable are proposed 60 year service life
Requirement, conventional organic insulation core cable cannot meet this high radiation, long-life use requirement at all.Therefore research is opened
Send high temperature resistant, radiation hardness, long-life core signal transmission cable that serviceability is excellent, be cable scientific research institution and production
One urgent task of enterprise.
Application No. CN200910153535.1 discloses a kind of cable, and employing metal-oxide is dielectric, stainless
Steel is that the cable that sheath prepares has good resistance to elevated temperatures, but passes through the cable metal insulated by oxide that the method prepares
Layer is due to density, the problem of component, it is difficult to meet the performance under nuclear power acquisition of signal and the high temperature of transportation art, high radiation condition
Requirement.
Summary of the invention
An object of the present invention is to provide a kind of has the good cable anti-interference, high temperature resistant, radiation-resistant of nuclear power.
The two of the purpose of the present invention are to provide a kind of has the good cable anti-interference, high temperature resistant, radiation-resistant of nuclear power
Manufacture method.
An object of the present invention is achieved through the following technical solutions:
A kind of nuclear power is with high temperature resistant radiation hardness signal-transmitting cable, it is characterised in that: include conductor, interior insulation the most successively
Layer, screen layer, external insulation layer, oversheath, described conductor is copper core conductor, and described inner insulating layer is aluminium oxide or silicon dioxide
Or magnesium oxide inner insulating layer, described screen layer is seamless copper pipe screen layer, described external insulation layer be aluminium oxide or silicon dioxide or
Magnesium oxide external insulation layer, described oversheath is the rustless steel that rustless steel oversheath or outer surface are coated with seamless copper pipe external shielding layer
Oversheath；Titanium dioxide in the composition of aluminium oxide, or described inside and outside silicon dioxide insulating layer in described inside and outside alumina insulating layer
In the composition of silicon, or described inside and outside magnesium oxide insulated layer, the composition of magnesium oxide all includes: 400-600 mesh, 200-400 mesh, 200
Different meshes proportioning below mesh and more than 600 mesh.
Using dielectric is aluminium oxide or silicon dioxide or magnesium oxide, organic compared with prior art of this kind of inorganic material
Material has high temperature resistant, resistance to oxidation, the superior function such as ageing-resistant, intensity is high.Rustless steel is as high temperature resistant sheath, life-time service temperature
Degree is up to 600 DEG C.The biggest particle diameter of alumina powder mesh number is the least, and ultra-fine alumina has high-melting-point, high rigidity, resistance height, machine
Tool performance is good, wear-resisting, anti-corrosion, insulate the good characteristic such as heat-resisting.
As preferably, the composition of aluminium oxide in described inside and outside alumina insulating layer, or described inside and outside silicon dioxide insulator
In the composition of silicon dioxide in Ceng, or described inside and outside magnesium oxide insulated layer, the composition of magnesium oxide is: the quality of 400-600 mesh
Ratio is more than 65%, and the mass ratio of 200-400 mesh is less than 20%, and the mass ratio below 200 mesh and more than 600 mesh is less than 15%.
Use different ratio aluminium oxide or or silicon dioxide or magnesium oxide, the aluminium oxide of fine particle or silicon dioxide or
Magnesium oxide, can fill the space of large-grain alumina or silicon dioxide or magnesium oxide, and when making compacting, aluminium oxide porcelain knob is finer and close.
As preferably, described inside and outside insulating barrier is alumina insulating layer, and described alumina insulating layer presses quality
Mark meter, including following components:
Aluminium oxide 95%-98%；
Magnesium oxide 0.5%-2%；
Yittrium oxide 0.5%-2%；
Dispersant 0.5%-1.5%.
Magnesium oxide can suppress growing up of aluminium sesquioxide crystal grain, generates tiny aluminium sesquioxide crystal grain.Yittrium oxide promotees
Make aluminium sesquioxide lattice deformability, activate lattice, acceleration of sintering.Dispersant prevents the reunion of material in mechanical milling process.
As preferably, described dispersant is polyacrylic acid or sodium polyacrylate.
The two of the purpose of the present invention are achieved through the following technical solutions: a kind of nuclear power passes with high temperature resistant radiation hardness signal
The manufacture method of transmission cable, it is characterised in that: comprise the following steps successively:
(1) batch mixing ball milling: in mass ratio, first mixes the aluminium oxide below 200 mesh with the aluminium oxide of 200-400 mesh, carries out
Ball milling, obtains mixture A；In mixture A, add the aluminium oxide mixing of 400-600 mesh, carry out second time ball milling, obtain
Mixture B；In mixture C, add the aluminium oxide mixing of more than 600 mesh, carry out third time ball milling, obtain mixture C；Mixed
Compound C adds magnesium oxide, dispersant, carries out the 4th ball milling, obtain batch mixing ball milling thing D；
(2) pelletize: batch mixing ball milling thing D is put into pelletize in comminutor, obtains granules；
(3) compacting of inside and outside insulating barrier and sintering: granules is sent into dry powder press cartridge and is pressed into inner or outer insulating oxide
Aluminum porcelain knob, is placed in Si-Mo rod sintering furnace sintering by the inner or outer aluminium oxide porcelain knob after compacting, cools down standby；
(4) assembling of conductor, inner insulating layer and screen layer, drawing: the interior insulating oxide aluminum porcelain knob after sintering in step (3) is put
Enter in seamless copper pipe screen layer, the interior insulating oxide aluminum porcelain knob pre-manufactured hole after then cleaning copper core conductor being penetrated sintering fills
It is made into interior insulated electric conductor blank；Described interior insulated electric conductor blank is carried out drawing and prepares semi-finished product；
(5) assembling of external insulation layer, sheath: external insulation aluminium oxide porcelain knob after the sintering described in step (3) is inserted rustless steel
In pipe oversheath, then the semi-finished product prepared in step (4) are inserted the prefabricated of external insulation aluminium oxide porcelain knob described in this step
Kong Zhong, is assembled into cable blank, then described cable blank is drawn to finished product.
Metallic copper as conductor be because its electric conductivity and the cost performance of price in all metals the highest, insulation is situated between
Matter is aluminium oxide, and this kind of inorganic material has high temperature resistant, resistance to oxidation compared with the organic material of prior art, ageing-resistant, intensity is high
Etc. superior function.Rustless steel is as high temperature resistant sheath, and life-time service temperature is up to 700 DEG C.
As preferably, in described step (1), Ball-milling Time is 2-4h for the first time, and ball milling speed is 100-200 r/min；The
The secondary ball milling time is 4-6h, and ball milling speed is 300-400 r/min；Ball-milling Time is 6-8h for the third time, and ball milling speed is
500-600 r/min；4th time Ball-milling Time is 10-20h, and ball milling speed is 700-1000r/min.
Use substep ball milling, first big for particle diameter is carried out ball milling with aluminium oxide in particle diameter, make particle diameter big with oxygen in particle diameter
Change alumina particles mixing to be uniformly dispersed, adding the little aluminium oxide ball milling together of particle diameter, it is ensured that coarse grained gap just by
Middle granule aluminium sesquioxide is filled, and the space of middle granule aluminium sesquioxide is filled by fine grained just, three oxidations of fine particle
Two aluminum can fill the space of bulky grain aluminium sesquioxide, and such stage filling makes aluminium sesquioxide form the most dense heaped-up
State, voidage minimizes value, and bulk density reaches maximum, and when making compacting, aluminium sesquioxide porcelain knob is finer and close.
As preferably, described in described step (3), dry powder press cartridge pressing pressure is 8-15 atmospheric pressure.
As preferably, in described step (3), sintering is divided into three phases, and the first stage is initial temperature-(80-100 DEG C),
Rising per minute 1-2 DEG C, is incubated 20-40min；Second stage is (80-100 DEG C)-(500-600 DEG C), rising 2-3 per minute
DEG C, it is incubated 20-40min；Phase III is (500-600 DEG C)-(1300-1500 DEG C), rising per minute 6-10 DEG C, and is incubated 1-
2h。
Under normal pressure, general Alumina Ceramics Sintering is temperature required higher, and more than 1800 DEG C, and the present invention is closed by science
The formula of reason, and strengthen sintering strength by controlling sintering temperature, at cold stage, heating rate want slowly in order to
Get rid of free water, reduce material surface generation bubbling；At middle thermophase, heating rate is wanted slowly equally in order to get rid of
Organic substance, reduces the defects such as material surface crackle；At hot stage, heating rate is accelerated, is made material at high temperature be rapidly fired to,
Improve and burn till speed, and improve the intensity of product.
As preferably, in described step (5) cable blank through repeatedly drawing and at a temperature of 900 DEG C-1050 DEG C heat treatment
Rear prepared finished product.
As preferably, described step (4) is additionally included in the assembling of seamless copper pipe screen layer front in seamless copper pipe screen layer
Wall uses unhairing machine to carry out hacking.
Surface configuration is used to have the hacking roller of projection to seamless copper pipe screen layer inwall hacking, in making seamless copper pipe screen layer
Wall forms multiple projection caved in laterally, is conducive to seamless copper pipe screen layer inwall and interior insulation in follow-up drawing process
Layer is mutually twisted, and adhesion is higher.
The invention have the advantage that
1. dielectric is aluminium oxide or silicon dioxide or magnesium oxide, and this kind of inorganic material is compared with the organic material of prior art
There is high temperature resistant, resistance to oxidation, the superior function such as ageing-resistant, intensity is high.Rustless steel is as high temperature resistant sheath, and life-time service temperature can
Reaching 600 DEG C, short time tolerable temperature is the highest up to 1000 DEG C.
2. this product cable uses and adds other additives, prepared alumina insulating layer in insulant aluminium oxide
Finer and close, obtained cable resistance to elevated temperatures is more preferable.Adding magnesium oxide and yittrium oxide in material, magnesium oxide can suppress three oxygen
Change growing up of two aluminium grains, generate tiny aluminium sesquioxide crystal grain.Yittrium oxide promotes aluminium sesquioxide lattice deformability, activation crystalline substance
Lattice, acceleration of sintering.
3. use substep ball milling, first big for particle diameter is carried out ball milling with aluminium oxide in particle diameter, make particle diameter big with in particle diameter
Alumina particle mixing is uniformly dispersed, and is adding the aluminium oxide ball milling together that particle diameter is little, it is ensured that coarse grained gap is lucky
Being filled by middle granule aluminium sesquioxide, the space of middle granule aluminium sesquioxide is filled by fine grained just, three oxygen of fine particle
Changing two aluminum and can fill the space of bulky grain aluminium sesquioxide, such stage filling makes aluminium sesquioxide form the most dense accumulation
State, voidage minimizes value, and bulk density reaches maximum, and when making compacting, aluminium sesquioxide porcelain knob is finer and close.
4. under normal pressure, general Alumina Ceramics Sintering is temperature required higher, and more than 1800 DEG C, and the present invention passes through section
Learning rational formula, and strengthen sintering strength by controlling sintering temperature, at cold stage, heating rate is wanted slowly, it is therefore an objective to
In order to get rid of free water, reduce material surface generation bubbling；At middle thermophase, heating rate want slowly equally in order to
Get rid of Organic substance, reduce the defects such as material surface crackle；At hot stage, heating rate is accelerated, is made material the quickest
Burn till, improve and burn till speed, and improve the intensity of product.
5. use surface configuration to have the hacking roller of projection to seamless copper pipe screen layer inwall hacking, make seamless copper pipe shield
Layer inwall form multiple projection caved in laterally, be conducive in follow-up drawing process seamless copper pipe screen layer inwall with interior
Insulating barrier is mutually twisted, and adhesion is higher.
Accompanying drawing explanation
Fig. 1 is the structural representation of cable of the present invention；
Fig. 2 is the structure of unhairing machine；
1-conductor in figure, 2-inner insulating layer, 3-screen layer, 4-external insulation layer, 5-oversheath, 6-rotating shaft, 7-hacking roller, 8-is convex
Rise.
Detailed description of the invention
Embodiment 1
As shown in Figure 1, a kind of nuclear power, with high temperature resistant radiation hardness signal-transmitting cable, includes copper core conductor the most successively
1, aluminium oxide or silicon dioxide or magnesium oxide inner insulating layer 2, seamless copper pipe screen layer 3, aluminium oxide or silicon dioxide or magnesium oxide
External insulation layer 4, rustless steel oversheath 5, in the inside and outside insulating barrier of aluminium oxide, the mesh array of aluminium oxide becomes or silicon dioxide is inside and outside
In insulating barrier, the mesh array of silicon dioxide becomes or in magnesium oxide, in inside and outside insulating barrier, the mesh array of magnesium oxide becomes: 400-600 mesh
Mass ratio be 67%, the mass ratio of 200-400 mesh is 19%, and the mass ratio below 200 mesh and more than 600 mesh is 14%.Wherein oxygen
Change the inside and outside insulating barrier of aluminum, in parts by weight, including following components:
Aluminium oxide 95%；
Magnesium oxide 2%；
Yittrium oxide 2%；
Polyacrylic acid 1%.
Above-mentioned inside and outside insulating barrier is that the manufacture method of aluminium oxide cable is: comprise the following steps successively:
(1) batch mixing ball milling: in mass ratio, first mixes the aluminium oxide below 200 mesh with the aluminium oxide of 200-400 mesh, carries out
Ball milling, obtains mixture A；In mixture A, add the aluminium oxide mixing of 400-600 mesh, carry out second time ball milling, obtain
Mixture B；In mixture C, add the aluminium oxide mixing of more than 600 mesh, carry out third time ball milling, obtain mixture C；Mixed
Compound C adds magnesium oxide, dispersant, carries out the 4th ball milling, obtain batch mixing ball milling thing D；Wherein during first time ball milling
Between be 2h, ball milling speed is 100 r/min；Ball-milling Time is 4h for the second time, and ball milling speed is 300 r/min；Ball milling for the third time
Time is 6h, and ball milling speed is 500 r/min；4th time Ball-milling Time is 10h, and ball milling speed is 700r/min.
(2) pelletize: batch mixing ball milling thing D is put into pelletize in comminutor, obtains granules；
(3) compacting of inside and outside insulating barrier and sintering: sent into by granules in dry powder press cartridge, in compacting pressure
Power is under 8 atmospheric pressure effects, is pressed into inner or outer insulating oxide aluminum porcelain knob, by the inner or outer oxidation after compacting
Aluminum porcelain knob is placed in Si-Mo rod sintering furnace and is divided into three phases to be sintered, and the first stage is initial temperature-80 DEG C,
Rising per minute 1 DEG C, is incubated 20min；Second stage is 80 DEG C-500 DEG C, rising per minute 2 DEG C, is incubated 20min；
Phase III is 500-1300 DEG C, rising per minute 6 DEG C, and is incubated 1h, cools down standby.
(4) assembling of conductor, inner insulating layer and screen layer, drawing: by the interior insulating oxide aluminum porcelain after sintering in step (3)
Post is inserted in seamless copper pipe, assembles in the interior insulating oxide aluminum porcelain knob pre-manufactured hole after then cleaning copper core conductor being penetrated sintering
Insulated electric conductor blank in becoming；Described interior insulated electric conductor blank is carried out drawing and prepares semi-finished product；
(5) external insulation layer, sheath assembling: external insulation aluminium oxide porcelain knob after the sintering described in step (3) is inserted stainless steel tube
In oversheath, then the semi-finished product of step (4) are inserted in the pre-manufactured hole of the external insulation aluminium oxide porcelain knob described in this step, assembling
Become cable blank, then described cable blank through repeatedly drawing and is prepared finished product at a temperature of 900 DEG C after heat treatment.
The electric property of cable prepared by said method is as follows:
Insulation resistance value: under room temperature >=1 × 1011Ω；
High-temperature pressure-proof is tested: under the conditions of 400 DEG C, 3000Vdc/5min, without puncturing；
Long-term service temperature: less than 600 DEG C.
Embodiment 2
As shown in Figure 1, a kind of nuclear power, with high temperature resistant radiation hardness signal-transmitting cable, includes copper core conductor the most successively
1, aluminium oxide inner insulating layer 2, seamless copper pipe screen layer 3, aluminium oxide external insulation layer 4, rustless steel oversheath 5, aluminium oxide is inside and outside absolutely
In edge layer, the mesh array of aluminium oxide becomes: the mass ratio of 400-600 mesh is 75%, and the mass ratio of 200-400 mesh is 15%, 200 mesh
Mass ratio below and more than 600 mesh is 10%.The wherein inside and outside insulating barrier of aluminium oxide, in parts by weight, including following components:
Aluminium oxide 98%；
Magnesium oxide 0.5%；
Yittrium oxide 0.5%；
Polyacrylic acid 1%.
The manufacture method of above-mentioned cable is: comprise the following steps successively:
(1) batch mixing ball milling: in mass ratio, first mixes the aluminium oxide below 200 mesh with the aluminium oxide of 200-400 mesh, carries out
Ball milling, obtains mixture A；In mixture A, add the aluminium oxide mixing of 400-600 mesh, carry out second time ball milling, obtain
Mixture B；In mixture C, add the aluminium oxide mixing of more than 600 mesh, carry out third time ball milling, obtain mixture C；Mixed
Compound C adds magnesium oxide, dispersant, carries out the 4th ball milling, obtain batch mixing ball milling thing D；Wherein during first time ball milling
Between be 4h, ball milling speed is 200 r/min；Ball-milling Time is 4h for the second time, and ball milling speed is 400 r/min；Ball milling for the third time
Time is 8h, and ball milling speed is 600 r/min；4th time Ball-milling Time is 20h, and ball milling speed is 1000r/min.
(2) pelletize: batch mixing ball milling thing D is put into pelletize in comminutor, obtains granules；
(3) compacting of inside and outside insulating barrier and sintering: granules is sent in dry powder press cartridge, be 15 at pressing pressure
Under atmospheric pressure effect, it is pressed into inner or outer insulating oxide aluminum porcelain knob, the inner or outer aluminium oxide porcelain knob after compacting is placed in Si-Mo rod
Being divided into three phases to be sintered in sintering furnace, the first stage is initial temperature-100 DEG C, rising per minute 2 DEG C, insulation
40min；Second stage is 100 DEG C-600 DEG C, rising per minute 3 DEG C, is incubated 40min；Phase III is 600-1500 DEG C, every point
Clock raises 10 DEG C, and is incubated 2h, cools down standby.
(4) assembling of conductor, inner insulating layer and screen layer, drawing: by the interior insulating oxide aluminum porcelain after sintering in step (3)
In post is inserted in seamless copper pipe screen layer, then cleaning copper core conductor is penetrated the interior insulating oxide aluminum porcelain knob after sintering prefabricated
Hole is assembled into interior insulated electric conductor blank；Described interior insulated electric conductor blank is carried out drawing and prepares semi-finished product；
(5) external insulation layer, sheath assembling: external insulation aluminium oxide porcelain knob after the sintering described in step (3) is inserted stainless steel tube
In oversheath, then the semi-finished product of step (4) are inserted in the pre-manufactured hole of the external insulation aluminium oxide porcelain knob described in this step, assembling
Become cable blank, then described cable blank is prepared finished product after heat treatment at a temperature of repeatedly drawing and 1050 DEG C.
The electric property of hollow cable prepared by said method is as follows:
Insulation resistance value: under room temperature >=1 × 1013Ω；
High-temperature pressure-proof is tested: under the conditions of 400 DEG C, 3000Vdc/5min, without puncturing；
Long-term service temperature: less than 600 DEG C.
Embodiment 3
As shown in Figure 1, a kind of nuclear power, with high temperature resistant radiation hardness signal-transmitting cable, includes copper core conductor the most successively
1, aluminium oxide inner insulating layer 2, seamless copper pipe screen layer 3, aluminium oxide external insulation layer 4, rustless steel oversheath 5, aluminium oxide is inside and outside absolutely
In edge layer, the mesh array of aluminium oxide becomes: the mass ratio of 400-600 mesh is 85%, and the mass ratio of 200-400 mesh is 10%, 200 mesh
Mass ratio below and more than 600 mesh is 5%.The wherein inside and outside insulating barrier of aluminium sesquioxide, in parts by weight, including following group
Point:
Aluminium sesquioxide 96%；
Magnesium oxide 2%；
Yittrium oxide 1%；
Sodium polyacrylate 1%.
The manufacture method of above-mentioned cable is: comprise the following steps successively:
(1) batch mixing ball milling: in mass ratio, first mixes the aluminium oxide below 200 mesh with the aluminium oxide of 200-400 mesh, carries out
Ball milling, obtains mixture A；In mixture A, add the aluminium oxide mixing of 400-600 mesh, carry out second time ball milling, obtain
Mixture B；In mixture C, add the aluminium oxide mixing of more than 600 mesh, carry out third time ball milling, obtain mixture C；Mixed
Compound C adds magnesium oxide, dispersant, carries out the 4th ball milling, obtain batch mixing ball milling thing D；Wherein during first time ball milling
Between be 3h, ball milling speed is 150 r/min；Ball-milling Time is 5h for the second time, and ball milling speed is 350 r/min；Ball milling for the third time
Time is 7h, and ball milling speed is 550 r/min；4th time Ball-milling Time is 15h, and ball milling speed is 850r/min；
(2) pelletize: batch mixing ball milling thing D is put into pelletize in comminutor, obtains granules；
(3) compacting of inside and outside insulating barrier and sintering: granules is sent in dry powder press cartridge, be 12 at pressing pressure
Under atmospheric pressure effect, it is pressed into inner or outer insulating oxide aluminum porcelain knob, the inner or outer aluminium oxide porcelain knob after compacting is placed in Si-Mo rod
Being divided into three phases to be sintered in sintering furnace, the first stage is initial temperature-90 DEG C, rising per minute 1.5 DEG C, insulation
30min；Second stage is 90 DEG C-550 DEG C, rising per minute 3 DEG C, is incubated 30min；Phase III is 550-1400 DEG C, every point
Clock raises 8 DEG C, and is incubated 1.5h, cools down standby；
(4) assembling of conductor, inner insulating layer and screen layer, drawing: the interior insulating oxide aluminum porcelain knob after sintering in step (3) is put
Enter in seamless copper pipe screen layer, the interior insulating oxide aluminum porcelain knob pre-manufactured hole after then cleaning copper core conductor being penetrated sintering fills
It is made into interior insulated electric conductor blank；Described interior insulated electric conductor blank is carried out drawing and prepares semi-finished product；
(5) external insulation layer, sheath assembling: external insulation aluminium oxide porcelain knob after the sintering described in step (3) is inserted stainless steel tube
In oversheath, then the semi-finished product of step (4) are inserted in the pre-manufactured hole of the external insulation aluminium oxide porcelain knob described in this step, assembling
Become cable blank, then described cable blank is prepared finished product after heat treatment under the conditions of repeatedly drawing and 1000 DEG C.
The electric property of hollow cable prepared by said method is as follows:
Insulation resistance value: under room temperature >=1 × 1012Ω；
High-temperature pressure-proof is tested: under the conditions of 400 DEG C, 3000Vdc/5min, without puncturing；
Long-term service temperature: less than 600 DEG C.
Embodiment 4
With embodiment 2, difference is: be additionally included in seamless copper pipe screen layer dress in the manufacture method step (4) of cable
Unhairing machine is used to carry out hacking seamless copper pipe screen layer inwall before joining, as in figure 2 it is shown, unhairing machine includes rotating shaft 6, and under rotating shaft
The hacking roller 7 that portion is connected, hacking roller 7 outer surface is provided with multiple protruding 8, and under the drive driving motor, rotating shaft 6 drives hacking
Roller 7 rotates and seamless copper pipe screen layer inwall is carried out hacking so that seamless copper pipe screen layer inner wall surface formed multiple laterally
The projection of depression, in follow-up drawing process, seamless copper pipe screen layer inner wall surface is engaged with insulating barrier so that seamless copper pipe
Screen layer is higher with insulating barrier adhesion, and intensity is bigger.
The electric property of hollow cable prepared by said method is as follows:
Insulation resistance value: under room temperature >=1 × 1013Ω；
High-temperature pressure-proof is tested: under the conditions of 400 DEG C, 3000Vdc/5min, without puncturing；
Long-term service temperature: less than 600 DEG C.
Comparative example 1
With embodiment 1, its difference is that the insulating barrier that inside and outside insulating barrier used uses is 400-600 mesh.By this
The electric property of the hollow cable that method prepares is as follows:
Insulation resistance value: under room temperature >=1 × 109Ω；
High-temperature pressure-proof is tested: under the conditions of 400 DEG C, 3000Vdc/5min, without puncturing；
Long-term service temperature: less than 500 DEG C.
Summary embodiment draws, the minimum insulation resistance value of cable that embodiment 1-4 prepares is more than 1 × 1011Ω, permanent worker
Making temperature and can reach 600 DEG C, the minimum insulation resistance value of cable that comparative example 1 prepares is 1 × 109Ω, and life-time service temperature is not
More than 500 DEG C, therefore, the cable of the present invention has high temperature resistant, the characteristic that insulation resistance value is high.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, people in the art
The present embodiment can be made after reading this specification by member as required does not has the amendment of creative contribution, but as long as at this
All protected by Patent Law in the right of invention.
Claims (10)
1. a nuclear power is with high temperature resistant radiation hardness signal-transmitting cable, it is characterised in that: include the most successively conductor (1),
Inner insulating layer (2), screen layer (3), external insulation layer (4), oversheath (5), described conductor (1) is copper core conductor, described interior absolutely
Edge layer (2) is aluminium oxide or silicon dioxide or magnesium oxide inner insulating layer, and described screen layer (3) is seamless copper pipe screen layer, described
External insulation layer (4) is aluminium oxide or silicon dioxide or magnesium oxide external insulation layer, and described oversheath (5) is rustless steel oversheath or outer
Surface coating has the rustless steel oversheath of seamless copper pipe external shielding layer；The composition of aluminium oxide in described inside and outside alumina insulating layer,
Or the composition of silicon dioxide in described inside and outside silicon dioxide insulating layer, or the group of magnesium oxide in described inside and outside magnesium oxide insulated layer
Cheng Jun includes: the different meshes proportioning below 400-600 mesh, 200-400 mesh, 200 mesh and more than 600 mesh.
A kind of nuclear power the most according to claim 1 is with high temperature resistant radiation hardness signal-transmitting cable, it is characterised in that: described
The composition of silicon dioxide in the composition of aluminium oxide in inside and outside alumina insulating layer, or described inside and outside silicon dioxide insulating layer, or
In described inside and outside magnesium oxide insulated layer, the composition of magnesium oxide is: the mass ratio of 400-600 mesh is more than 65%, 200-400 purpose
Mass ratio is less than 20%, and the mass ratio below 200 mesh and more than 600 mesh is less than 15%.
A kind of nuclear power the most according to claim 1 and 2 is with high temperature resistant radiation hardness signal-transmitting cable, it is characterised in that: institute
Stating inside and outside insulating barrier is alumina insulating layer, described alumina insulating layer in parts by weight, including following components:
Aluminium oxide 95%-98%；
Magnesium oxide 0.5%-2%；
Yittrium oxide 0.5%-2%；
Dispersant 0.5%-1.5%.
A kind of nuclear power the most according to claim 3 is with high temperature resistant radiation hardness signal-transmitting cable, it is characterised in that: described point
Powder is polyacrylic acid or sodium polyacrylate.
A kind of nuclear power the most according to claim 3 manufacture method of high temperature resistant radiation hardness signal-transmitting cable, its feature
It is: comprise the following steps successively:
(1) batch mixing ball milling: in mass ratio, first mixes the aluminium oxide below 200 mesh with the aluminium oxide of 200-400 mesh, carries out
Ball milling, obtains mixture A；In mixture A, add the aluminium oxide mixing of 400-600 mesh, carry out second time ball milling, obtain
Mixture B；In mixture C, add the aluminium oxide mixing of more than 600 mesh, carry out third time ball milling, obtain mixture C；Mixed
Compound C adds magnesium oxide, dispersant, carries out the 4th ball milling, obtain batch mixing ball milling thing D；
(2) pelletize: batch mixing ball milling thing D is put into pelletize in comminutor, obtains granules；
(3) compacting of inside and outside insulating barrier and sintering: granules is sent into dry powder press cartridge and is pressed into inner or outer insulating oxide
Aluminum porcelain knob, is placed in Si-Mo rod sintering furnace sintering by the inner or outer aluminium oxide porcelain knob after compacting, cools down standby；
(4) assembling of conductor, inner insulating layer and screen layer, drawing: the interior insulating oxide aluminum porcelain knob after sintering in step (3) is put
Enter in seamless copper pipe screen layer, the interior insulating oxide aluminum porcelain knob pre-manufactured hole after then cleaning copper core conductor being penetrated sintering fills
It is made into interior insulated electric conductor blank；Described interior insulated electric conductor blank is carried out drawing and prepares semi-finished product；
(5) assembling of external insulation layer, sheath: external insulation aluminium oxide porcelain knob after the sintering described in step (3) is inserted rustless steel
In pipe oversheath, then the semi-finished product prepared in step (4) are inserted the prefabricated of external insulation aluminium oxide porcelain knob described in this step
Kong Zhong, is assembled into cable blank, then described cable blank is drawn to finished product.
A kind of nuclear power the most according to claim 5 manufacture method of high temperature resistant radiation hardness signal-transmitting cable, its feature
It is: in described step (1), Ball-milling Time is 2-4h for the first time, and ball milling speed is 100-200 r/min；Ball-milling Time for the second time
For 4-6h, ball milling speed is 300-400 r/min；Ball-milling Time is 6-8h for the third time, and ball milling speed is 500-600 r/min；
4th time Ball-milling Time is 10-20h, and ball milling speed is 700-1000r/min.
A kind of nuclear power the most according to claim 5 manufacture method of high temperature resistant radiation hardness signal-transmitting cable, its feature
It is: described in described step (3), dry powder press cartridge pressing pressure is 8-15 atmospheric pressure.
A kind of nuclear power the most according to claim 5 manufacture method of high temperature resistant radiation hardness signal-transmitting cable, its feature
It is: in described step (3), sintering is divided into three phases, and the first stage is initial temperature-(80-100 DEG C), rising 1-per minute
2 DEG C, it is incubated 20-40min；Second stage is (80-100 DEG C)-(500-600 DEG C), rising per minute 2-3 DEG C, is incubated 20-
40min；Phase III is (500-600 DEG C)-(1300-1500 DEG C), rising per minute 6-10 DEG C, and is incubated 1-2h.
A kind of nuclear power the most according to claim 5 manufacture method of high temperature resistant radiation hardness signal-transmitting cable, its feature
It is: in described step (5), cable blank through repeatedly drawing and prepares finished product at a temperature of 900 DEG C-1050 DEG C after heat treatment.
A kind of nuclear power the most according to claim 9 manufacture method of high temperature resistant radiation hardness signal-transmitting cable, its feature
It is: before described step (4) is additionally included in the assembling of seamless copper pipe screen layer, seamless copper pipe screen layer inwall is used unhairing machine
Carry out hacking.
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| CN106752808A (en) * | 2016-12-21 | 2017-05-31 | 川叶电子科技（上海）股份有限公司 | A kind of high voltage withstanding electric wire of high temperature resistant and preparation method thereof |
| CN107240463A (en) * | 2017-06-30 | 2017-10-10 | 上海应用技术大学 | A kind of assembly method of the prefabricated Magnesium oxide knob insulator of mineral insulated cable |
| CN108516811A (en) * | 2018-06-05 | 2018-09-11 | 博侃电气（合肥）有限公司 | A kind of preparation method of mineral insulated cable silica porcelain knob |
| CN111883289A (en) * | 2020-06-29 | 2020-11-03 | 华为技术有限公司 | Insulated wire, method for manufacturing same, and coil or winding |
| CN112927917A (en) * | 2021-01-25 | 2021-06-08 | 浙江三钛科技有限公司 | Inductance element |
| CN115331868A (en) * | 2022-07-15 | 2022-11-11 | 广东南缆电缆有限公司 | Extrusion type silica insulation fire-resistant cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106752808A (en) * | 2016-12-21 | 2017-05-31 | 川叶电子科技（上海）股份有限公司 | A kind of high voltage withstanding electric wire of high temperature resistant and preparation method thereof |
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| CN111883289A (en) * | 2020-06-29 | 2020-11-03 | 华为技术有限公司 | Insulated wire, method for manufacturing same, and coil or winding |
| CN112927917A (en) * | 2021-01-25 | 2021-06-08 | 浙江三钛科技有限公司 | Inductance element |
| CN115331868A (en) * | 2022-07-15 | 2022-11-11 | 广东南缆电缆有限公司 | Extrusion type silica insulation fire-resistant cable |
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| CN106024102B (en) | 2018-07-03 |
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Denomination of invention: A high-temperature and radiation resistant signal transmission cable for nuclear power and its production method Effective date of registration: 20230922 Granted publication date: 20180703 Pledgee: South Taihu New Area sub branch of Huzhou Wuxing Rural Commercial Bank Co.,Ltd. Pledgor: TEC ELECTRIC Co.,Ltd. Registration number: Y2023980058277 |
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