CN108254622A - High-temperature superconductor band test device and test method - Google Patents
High-temperature superconductor band test device and test method Download PDFInfo
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Abstract
The present invention provides a kind of high-temperature superconductor band test device, including box body (9), operation portion and display unit；The operation portion, display unit are arranged on box body (9)；The operation portion includes current feed end (1), voltage lead end (2), metallic plate (3) and elbow folder (8).High-temperature superconductor band normal temperature resistance test device provided by the invention can realize the normal temperature resistance test to band arbitrary portion in the case where not destroying superconducting tape.High-temperature superconductor band normal temperature resistance test device provided by the invention can avoid the difference due to winter and summer temperature that from introducing error to the resistance test of band.High-temperature superconductor band normal temperature resistance test device provided by the invention, portable can use in each process, quickly obtains data, convenient for the control to technique.High-temperature superconductor band normal temperature resistance test method provided by the invention, the normal temperature resistance parameter for controlling superconducting tape that can be very effective, control accuracy are less than 5%.
Description
Technical field
The present invention relates to a kind of high-temperature superconductor bands, and in particular, to a kind of high-temperature superconductor band test device and test
Method more particularly to a kind of high-temperature superconductor band normal temperature resistance test device and test method.
Background technology
The Ka Molinangnasi of Univ Leiden Netherlands in 1911 has been taught since laboratory finds superconducting phenomenon for the first time, is surpassed
It is always one of most active research frontier of contemporary science and technology to lead material and its application.In January, 1986 is in the U.S. world
Business Machines are located at the scientist Bai Nuozi and Miao Le to work in Zurich, SUI laboratory, find the oxidation of barium lanthanum copper first
Object is high-temperature superconductor, and quickly in the time of 1-2, the critical transition temperature of superconductor is improved by each seminar in the world
It has arrived more than liquid nitrogen temperature, so as to break away from the demand that superconductor freezes to expensive liquid helium.Between the past more than ten years, with superconduction
Based on superconducting power apparatus research rapid development, in superconducting energy storage, superconducting motor, hyperconductive cable, superconductive current limiter, superconduction
The fields such as transformer, superconductive synchronous phase modifier obtain notable achievement.
The power equipment of the superconduction of the overwhelming majority is all using replacement of the superconductor to traditional copper wire or aluminum steel, so as to real
Power, smaller loss and the smaller bulking value of existing bigger.The large-scale application of these superconducting power apparatus will be faced into
This comparison and accounting.Superconductive current limiter is then a kind of irreplaceable superconductor applications product, be utilized superconducting conductor itself by
Transformation of the superconducting state to normal state, it acts as nonlinear resistance.As a kind of effective short-circuit current limiting device, sending out
During raw short trouble, can short circuit current be restricted to acceptable level rapidly, so as to avoid short circuit current big in power grid
Significant damage is formed to the safe and stable operation of power grid and electrical equipment, the stability of power grid can be greatly improved, improve power supply
Reliability and safety.
With the development of the social economy, electricity needs is continuously increased；The capacity of power grid constantly increases simultaneously.Electric system is held
The increase of amount and the increase of grid-connected transmission of electricity so that potential short-circuit power and short circuit current also increase therewith in power grid.Thus
The Breaking capacity of high-voltage circuitbreaker is asked also to accordingly increase, this just brings asking for some row to the construction of electric system and operation
Topic.Especially the breaker country of maximum connecting-disconnecting function is 63KA at present, and foreign countries are 100KA, if short circuit current is more than to cut-off
The limit can only be forced using other separate systems, therefore limiting short-circuit current has a very important significance.
Fault current limiter in power grid is installed, is fault current limiting, reduces the effective measures of breaker Breaking capacity.Draw
Enter current limiter, due to reducing the level of breaking current, the breaker of present existing low connecting-disconnecting function can be made full use of, avoided
An urgent demand of its upgrading.Introduce design difficulty and cost that current limiter has been greatly reduced entire network system simultaneously.It passes
The short circuit current method for limiting of system has：Limit split reactor, turn-off thyristor, limiting fuse, discharging gap etc., but this
A little method all Shortcomings.Especially many methods, are restricted in use scope, although under 10KV grade low capacity, can
To there is the method for limiting of many fault currents, but in the case of having arrived 220KV grade high power capacity, traditional certain methods all rise not
To effect.It just needs to utilize superconductive current limiter at this time.
Practical current limiter needs to meet several basic demands：1) during normal operation, impedance is small as far as possible, to reduce
Running wastage；2) after short trouble occurs, larger impedance, limiting short-circuit current are presented immediately；3) it is stood after the system failure is eliminated
Restore normal use；4) utilization repeated steadily in the long term.High tc superconducting fault current limiter is changed using superconducting state to normal state resistivity
Characteristic, perfectly accomplished above some, it is considered to be current most effective electric power short-circuit fault current limiter.
It is divided into bismuth system and yttrium system into commercialized high-temperature superconductor band at present.Bismuth-system superconductor, that is, first generation superconduction material
Material, also referred to as BSCCO superconductors；Yttrium series superconducting material, that is, second generation superconductor, also referred to as YBCO or ReBCO superconductors.
Using BSCCO as the first generation superconducting tape of material, using silver-colored jacket production technology, there is higher suiperconducting transition temperature
It spends (Tc~110K).Particularly flat crystal caused by the crystal structure of its stratiform is easy under the action of stress along copper-oxygen
Face direction slides.So using the method (PIT methods) for -2223 precursor powder of bismuth being packed into silver-colored pipe processing, by drawing and rolling
Processing, with regard to good texture can be obtained.In addition, when bismuth -2223 coordinates and is mutually heat-treated, the micro liquid phase supervened can
The micro-crack that cold working generates in the process is made up well, so as to be largely overcoming the influence of Weak link.Just due to
The two fundamental characteristics pass through people and control pioneer's powder, processing technology and heat treatment technics, have successfully prepared high property
It can long band.
High tc superconducting fault current limiter is divided into two kinds at present, and one kind is inductive type current limiter, and one kind is resistance-type current restrictor.Wherein
Resistance-type current restrictor principle and simple in structure, current limliting capacity is big.Inductive type current limiter, especially saturated core type current limiter, though
It so has many good qualities, such as superconducting coil does not quench quenching and recovery problem there is no complexity.But its there is also much ask
Topic：Conventional size will be designed by twice of fault power, when current limliting only have singlecore play a role (another iron core still in
Saturation state), this reduces current limitation effect, leads to that iron core is big with the volume for exchanging winding, weight is big, cost of manufacture is high；Normally
During operation, iron core is in saturation state, there is significant stray field；When short-circuit, it is full that powerful short circuit current makes iron core exit biasing
With, and there is magnetic field alternation, DC side certainly will have sensing high pressure, this requires DC loop to have the energy for bearing impacting with high pressure
Power；DC power supply must be constant-current source, if energized circuit, there are larger alternating current impression electric current, current limitation effect will weaken significantly.
In addition iron core is because saturation and desaturation can generate significant voltage harmonic repeatedly.
For first generation high-temperature superconductor band since 70% ingredient is silver, silver-colored resistance is very small, if with its making not
Larger impedance, limiting short-circuit current are presented immediately conducive to after short circuit occurs.The frequency used additionally, due to China's transmission line of electricity
Rate is 50Hz, before first wave crest arrives, that is, electrical response is needed within 5ms, and generation band is not achieved so fast
The response of speed.Therefore inductive type superconductive current limiter is made usually using first generation high-temperature superconductor band.
Using the second generation superconducting tape that ReBCO (Re is rare earth element) is material, also referred to as coating conductor, because it has
Compared to the stronger current capacity of bi tape, higher magnetic field performance and lower material cost, in medical treatment, military affairs, energy etc.
Various fields have wider more preferably application prospect.There is the characteristics of larger resistance, fast response time after being quenched due to it,
Resistive superconducting current limiter is made usually using it.
Second generation superconducting tape, since its ReBCO as superconduction current-carrying core is hard and crisp in itself, so being usually in nickel
The technique productions of multilayer coating film are used in based alloy substrate, so the coating conductor that is otherwise known as.Second generation superconducting tape generally by
Base band, buffer layer (transition zone), superconducting layer and protective layer composition.The effect of metallic substrates is that excellent machinery is provided for band
Performance.On the one hand the effect of transition zone is to prevent superconducting layer from the phase counterdiffusion between element occurring with metallic substrates, on the other hand most
The template that the transition zone of top need to be provided for the epitaxial growth of superconducting layer improves YBCO crystal grain arrangement quality.Prepare superconductivity
The excellent coating conductor of energy, needs superconducting layer to have consistent biaxial texture.Biaxial texture refers to crystal grain in a/b axis and c-axis (c
Axis is perpendicular to a/b faces) both direction has almost consistent arrangement.Since ybco film is in the degree of alignment of a/b axis directions
(texture in face) relative difficult is realized, and texture is poor in face can seriously reduce superconductivity.Therefore YBCO superconductive film is needed
The epitaxial growth on the transition zone with biaxial texture and matching lattice.It prepares and realizes skill of the biaxial texture there are two types of mainstream
Art route, one kind are rolling auxiliary biaxial texture baseband technologies, and another kind is ion beam assisted deposition.ReBCO superconducting layers
There are many common techniques of preparation, there is pulsed laser deposition, metal-organic chemical vapor deposition equipment, reaction coevaporation etc..It protects
Sheath is primarily used to protection superconduction film layer, the generally silver layer in superconducting tape surface plating 1-5um.
However these superconducting tapes, since the limitation of itself material or manufacture craft is also there is there are many weakness,
Especially in specific superconductor applications device is applied it to, these material work in-processes need to make by connector, coiling line
Circle, epoxy impregnation, vacuum pour, and need rapid heat cycle in the application, and a large amount of cold cyclings are answered by caused by big magnetic field
The work condition environment of power, the impact of high current etc. complexity.It may be said that the superconducting tape purely protected by preliminary silver, performance are remote
Far from the performance for the operating mode, especially electricity and terms of mechanics for meeting practical superconducting tape application.Therefore it is general on this basis
Time way be that copper coating processing is carried out to it, i.e. the layers of copper in silver-plated superconducting tape electroplating surface 1-80um.
The superconducting tape strengthened by plating can adapt to a part of application environment, but for the operating mode of many superconductor applications
Still it cannot meet the requirements, especially the band of superconduction resistance-type current restrictor, it is main to consider that band has big resistance after quenching, energy
Certain mechanical shock is fought, protective layer uses high heat conduction, high intensity, high-resistance material preferably at this time, such as stainless steel.Cause
This needs to be packaged superconducting tape reinforcement, i.e., the technique pair for passing through hot-dip using stainless steel clad strip with stainless steel material
Superconducting tape realizes comprehensive cladding processing.The superconduction strengthened according to the encapsulation described in patent document CN201710416026.8
Band has the advantages that multiple：Such as superconducting tape surface oxidation-resistant, machinability, antifatigue degree are substantially strengthened, delamination is answered
Power can substantially be strengthened, stretch-proof stress can substantially be strengthened, anti-stable state conveyance capacity is substantially strengthened, transient state conveyance capacity significantly adds
By force.
Superconduction resistance-type current restrictor.Current limiter is in superconducting state when circuit works normally, and resistance is almost nil.When short circuit occurs
When, short circuit current is more than the critical current that can bear of superconductor, becomes non-conductor so as to quench superconduction and is presented big resistance,
Therefore short circuit current is limited.And at this point, superconducting tape needs keep out the short circuit current of several times upper greatly than its critical current, and
Adhere to 100ms or so (relay protection starts the time needed).It then needs to pay close attention to the anti-transient state overcurrent impact capacity of superconducting tape at this time.Such as
There is a bit of band to can't carry such impact in the entire current limiter of fruit, entire current limiter will be burned out.Superconducting tape shoulders moment
During high current, have violent transient state and rise heat, electromagnetic change etc., can cause to impact from mechanics and thermally to band.Band at this time
Material needs certain mechanical structure intensity, further needs exist for there are one thermal capacitance, and influence of the heat to band is risen to take out transient state.This
When just need band by high heat capacity, high heat conduction, the strong mechanical property and big material of resistance is packaged.By stainless steel or
The anti-transient state conveyance capacity of superconducting tape of more preferable material package, which has, significantly to be promoted, and protects the band in actual motion well
Material.Typical 12mm wide stainless steels encapsulate superconducting tape normal temperature resistance in 120m Ω/m, in the case where power frequency impacts 100ms, band
Anti- overcurrent impact capacity is more than 1300A.
Therefore to being used for the superconducting tape of superconduction resistance-type current restrictor, the protection post processing form of process is silver-plated, copper facing,
Stainless steel encapsulates.
One large-scale high-temperature superconductor resistance-type current restrictor needs there are many parallel units and series unit to form.Reason
It is certain voltage value that can only be resistant to of every meter of superconducting tape, total stress levels of current limiter, limiting superconducting tape makes
Most millet number also limits superconducting tape series arm number.Superconducting tape needs anti-overcurrent dash current, and superconducting tape is only
It can be resistant to certain overcurrent whithin a period of time, therefore total overcurrent that current limiter needs are resistant to limits superconducting tape
Parallel branch number.Superconduction resistance-type current restrictor needs certain fault current limitation rate, this just needs certain resistance.The electricity
The minimum that resistance value also limits the series and parallel structure of superconducting tape and uses.In addition to this superconducting tape also has one fixed
Critical current.Superconduction resistance-type current restrictor is needed in normal operation there are one total rated current, and which also limits parallel connections to prop up
Way.
Superconduction resistance-type current restrictor needs the performance of superconducting tape everywhere to accomplish as possible unanimously.The reason is that, it needs whole
Each meter of band can uniformly bear short-circuit impact electric current in a current limiter.If wherein band performance has very big inclined
Difference is bound to cause the work that a part of superconducting tape only assumes responsibility for very little, that a large amount of dash current will be pressed against another portion
Divide on superconducting tape, increase their burden.It is whole if thering is a bit of band to can't carry such impact in entire current limiter
A current limiter will be burned out.
Band critical current, normal temperature resistance, Unit Weight and the resistance to electricity that is hit mainly are included for the index of superconducting tape
The ability of stream.Critical current is the point that band is changed into normal state from superconducting state, if the critical current of band is not in current limiter
It will equally cause to generate the inconsistent of resistance.After superconduction on superconducting tape becomes normal state, the size of resistance mainly depends on
In the Unit Weight of band and normal temperature resistance value.Since the structure on the outside of band superconducting layer is basically identical, every meter of weight determines
The thermal capacitance on band.The band of different thermal capacitances has different temperature lift curves at any time, and different Wen Shenghui causes
Different resistance value on band.If ensure that Unit Weight is consistent with thermal capacitance simultaneously, temperature is raised to mutually in the same time, also the same to need
The resistance of every section of superconducting tape is consistent, is usually demarcated with normal temperature resistance.Reason is that it is generally desirable to current limiters to quench
In period, superconducting tape is raised to room temperature from 77K temperature.If superconducting tape temperature higher, 183 DEG C of the fusing point of scolding tin has been approached,
Band will damage.If strip temperature does not reach room temperature, since resistance and temperature are proportional relations, total electricity that current limiter comes out
Resistance is also smaller, and current limiting capacity is poor.Tolerance rush of current ability then tests super from mechanical property and electric property every aspect
Conduction band material.
It is an experiment value to be resistant to dash current ability, and critical current, normal temperature resistance, Unit Weight are then in superconductive tape
The controlling value of material in the production process.After silver-colored protective layer is plated outside superconducting layer, transmission method or electromagnetic induction method test can be used
The critical current of band, by selecting, the critical current of superconducting tape can be consistent.Since same current limiter generally makes
With the superconducting tape of same specification, therefore the Unit Weight of superconducting tape can also be relatively easy to and be consistent.It is most difficult to pass through
What control was consistent is the normal temperature resistance of superconducting tape.Usually require that the normal temperature resistance of superconducting tape in 120m Ω/m.
Normal temperature resistance depends on the structure of band in itself, and the resistance for being equivalent to each material carries out obtained total electricity in parallel
Resistance.For superconducting tape before plated silver finish, resistance is generally 3000m Ω/m, can ignore for final controlling value
Disregard.Final normal temperature resistance largely depends on the parallel connection electricity of silver layer, layers of copper and stainless steel encapsulated layer and the soldering-tin layer of encapsulation
Resistance.
Silver layer is generally coated with using vacuum coating method, and in addition to band when being coated with, the region beside band also can
It is coated with silver.Since the viscosity of silver is higher, the silver in the region beside band gets deeper that the silver on band can be formed and scratches, and makes
It is always thinner than other side to obtain the silver of side on superconductive long strip.
Layers of copper is generally coated with using electric plating method.Since the electric field of side edges of strip is concentrated, copper facing section can not be kept away
The appearance bone type exempted from, therefore all kinds of thickness testing tools is used, the thickness of layers of copper is very difficult to accurate calibration.Copper facing due to
The difference of daily temperature humidity, even if setting same copper-plating technique parameter, the thickness of superconducting tape layers of copper plated also has micro-
The difference of sight.
Generally using hot-dip in packaging technology, after then superconduction copper facing band enters tin stove in hot-dip, some is micro-
The copper of amount can be dissolved in entire solder bath, result in the reduction of copper component.In addition the stainless steel band of every cladding is due to existing
Certain tolerance, unit resistance also have deviation.Even if setting same packaging technology parameter, packaged superconducting tape is finally electric
Resistance also has difference.
The process of entire superconducting tape post processing is complicated, and the factor influenced for normal temperature resistance is many.If it is not surveyed
Examination control, i.e., produced using same technique and material, it is difficult to finally obtaining the consistent product of normal temperature resistance.
Invention content
For the defects in the prior art, the object of the present invention is to provide a kind of high-temperature superconductor band test device and tests
Method.
According to provided by the invention, a kind of high-temperature superconductor band test device, which is characterized in that including box body, operation
Portion and display unit；
The operation portion, display unit are arranged on box body；
The operation portion includes current feed end, voltage lead end, metallic plate and elbow folder；
The display unit includes resistance display, temperature control display and Current Display；
It is set on the metallic plate fluted；
The groove forms superconducting tape to be tested and accommodates limitation space；
The side of the metallic plate is provided with elbow folder；
The end set of the elbow folder has current feed end, voltage lead end；
The current feed end, voltage lead end are pressed from both sides with elbow insulate；
The resistance display, temperature control display and Current Display are arranged on box body.
Preferably, the current feed end, voltage lead end are in contact with superconducting tape to be tested；
The end that the current feed end is in contact with superconducting tape to be tested is plane；
The end that the voltage lead end is in contact with superconducting tape to be tested is the conical surface；
Insulating materials is coated on the groove.
Preferably, it is wide that the end that the voltage lead end is in contact with superconducting tape to be tested is located at superconducting tape to be tested
Spend the midpoint in direction.
Preferably, the bottom of the metallic plate is provided with heating plate；
Thermocouple is embedded on the metallic plate.
Preferably, it is provided with control button on the temperature control display；
The control button controls metal plate thermostatic constant by heating plate and thermocouple.
Preferably, the resistance display is used to show the voltage on the superconducting tape to be tested that voltage lead end measures；
The Current Display is used to show the electric current that current feed end is flowed through by superconducting tape to be tested；
When elbow, which presss from both sides, to be opened, superconducting tape to be tested can be placed into superconducting tape accommodation space to be tested,
When elbow clip closure, superconducting tape to be tested is pushed down, and formed and led in the current feed end and voltage lead end
Electrical connection.
Superconductor to be tested is carried out using above-mentioned high-temperature superconductor band test device the present invention also provides a kind of
The test method of test, includes the following steps：
Step 2：The end being in contact by the current feed end with superconducting tape to be tested, and pass through the voltage and draw
Line end tests the superconducting tape to be tested for having plated silver-colored protective layer with the end that superconducting tape to be tested is in contact, and is treated
The normal temperature resistance of superconducting tape is tested, is denoted as silver-plated normal temperature resistance；
Step 3：According to silver-plated normal temperature resistance, copper facing is carried out to the superconducting tape to be tested for having plated silver-colored protective layer；
Step 4：The end being in contact by the current feed end with superconducting tape to be tested, and pass through the voltage and draw
Line end tests the superconducting tape to be tested for having plated copper protective layer with the end that superconducting tape to be tested is in contact, and is treated
The normal temperature resistance of superconducting tape is tested, is denoted as copper facing normal temperature resistance；
Step 5：According to copper facing normal temperature resistance, it is packaged to having plated copper protective layer superconducting tape；
Step 6：The end that is in contact by the current feed end with superconducting tape to be tested, the voltage lead end with
The superconducting tape to be tested encapsulated is tested in the end that superconducting tape to be tested is in contact, and determines superconducting tape to be tested
It is whether qualified.
Preferably, the step 3 includes following sub-step：
Step 3.1：Any portion in the superconducting tape to be tested for having plated silver-colored protective layer is divided into several sections；
Step 3.2：Several sections of superconducting tape to be tested is classified into, by different copper-plating technique parameters, is grouped examination
Copper facing；
Step 3.3：End, the voltage lead end being in contact by the current feed end with superconducting tape to be tested
The superconducting tape to be tested of grouping examination plating is respectively tested in the end being in contact with superconducting tape to be tested, and it is pre- to obtain copper facing
Setting parameter；
Step 3.4：According to copper facing parameter preset to the rest part except any portion of superconducting tape to be tested
Copper facing is carried out as the current superconducting tape to be tested for having plated copper protective layer, obtains normal temperature resistance after copper facing；
The step 5 includes following sub-step：
Step 5.1：Any portion in the current superconducting tape to be tested for having plated copper protective layer is divided into several sections；
Step 5.2：Several sections of superconducting tape to be tested is classified into, by different packaging technology parameters, is grouped examination
Envelope；
Step 5.3：End, the voltage lead end being in contact by the current feed end with superconducting tape to be tested
The superconducting tape to be tested of grouping examination envelope is respectively tested in the end being in contact with superconducting tape to be tested, and it is pre- to obtain encapsulation
Setting parameter；
Step 5.4：According to encapsulation parameter preset to the institute of the current superconducting tape to be tested for having plated copper protective layer
It states the rest part except any portion to be packaged, normal temperature resistance after being encapsulated.
Preferably, step 1, resistance test step are further included；
The step 1 includes following sub-step：
Step 1.1：End, the voltage lead end and the clad strip being in contact by the current feed end with clad strip
The resistance of clad strip is tested in the end being in contact, and obtains the average value of the resistance of clad strip, is denoted as reference resistance；
Step 1.2：According to reference resistance, the normal temperature resistance controlling value after superconducting tape copper facing to be tested is obtained；
Wherein, in step 1.1, the material of the clad strip is stainless steel material；
If normal temperature resistance is less than or equal to normal temperature resistance controlling value after the copper facing that step 3.4 obtains, and irrelevance is less than
Preset proportion threshold value then enters step 4 and continues to execute, and otherwise, then return to step 3.1 continues to execute；
If normal temperature resistance is less than or equal to normal temperature resistance controlling value after the encapsulation that step 5.4 obtains, and irrelevance is less than
Preset proportion threshold value then enters step 6 and continues to execute, and otherwise, then return to step 5.1 continues to execute；
If execution by one or many steps 5.1 to step 5.4 performs repeatedly, room temperature electricity after the encapsulation of acquisition
Resistance then adjusts the normal temperature resistance controlling value after superconducting tape copper facing to be tested, return to step 3.1 still greater than normal temperature resistance controlling value
It continues to execute；If step 3.4 obtain copper facing after normal temperature resistance be less than normal temperature resistance controlling value, and irrelevance be more than wait in advance
If proportion threshold value；Or normal temperature resistance is less than normal temperature resistance controlling value, and irrelevance is big after the encapsulation of step 5.4 acquisition
In etc. preset proportion threshold value, then terminate superconducting tape to be tested post processing make.
Compared with prior art, the present invention has following advantageous effect：
1st, high-temperature superconductor band normal temperature resistance test device provided by the invention, the energy in the case where not destroying superconducting tape
It realizes and the normal temperature resistance of band arbitrary portion is tested.
2nd, high-temperature superconductor band normal temperature resistance test device provided by the invention, can avoid due to winter and summer temperature
Difference error can be introduced to the resistance test of band.
3rd, high-temperature superconductor band normal temperature resistance test device provided by the invention, portable can make in each process
With data quickly being obtained, convenient for the control to technique.
4th, high-temperature superconductor band normal temperature resistance test method provided by the invention, can be very effective control superconducting tape
Normal temperature resistance parameter, control accuracy be less than 5%.
Description of the drawings
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is high-temperature superconductor band test device overall structure figure provided by the invention.
Fig. 2 is the whole vertical view of high-temperature superconductor band test device provided by the invention.
Shown in figure：
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection domain.
The present invention provides a kind of high-temperature superconductor band test device, including box body 9, operation portion and display unit；It is described
Operation portion, display unit are arranged on box body 9；The operation portion include current feed end 1, voltage lead end 2, metallic plate 3 with
And elbow folder 8；The display unit includes resistance display 5, temperature control display 6 and Current Display 7；The metallic plate 3
Upper setting fluted 4；The groove 4 forms superconducting tape to be tested and accommodates limitation space；The side of the metallic plate 3 is provided with
Elbow folder 8；The end set of the elbow folder 8 has current feed end 1, voltage lead end 2；The current feed end 1, voltage lead end
2 insulate with elbow folder 8；The resistance display 5, temperature control display 6 and Current Display 7 are arranged on box body 9.
The current feed end 1, voltage lead end 2 are in contact with superconducting tape to be tested；The current feed end 1 with
The end that superconducting tape to be tested is in contact is plane；The end that the voltage lead end 2 is in contact with superconducting tape to be tested
For the conical surface；Insulating materials is coated on the groove 4.
The end that the voltage lead end 2 is in contact with superconducting tape to be tested is located at superconducting tape width direction to be tested
Midpoint.
The bottom of the metallic plate 3 is provided with heating plate；Thermocouple is embedded on the metallic plate 3.
Control button is provided on the temperature control display 6；The control button passes through heating plate and thermocouple control
3 constant temperature of metallic plate processed is constant.
The resistance display 5 is used to show the voltage on the superconducting tape to be tested that voltage lead end 2 measures；The electricity
Stream display 7 is used to show the electric current that current feed end 1 is flowed through by superconducting tape to be tested；It is to be tested when elbow folder 8 is opened
Superconducting tape can be placed into superconducting tape accommodation space to be tested, when elbow folder 8 is closed, the current feed end 1 and electricity
Superconducting tape to be tested is pushed down at voltage lead wires end 2, and is formed and be conductively connected.
The present invention also provides a kind of above-mentioned high-temperature superconductor band test devices to test superconductor to be tested
Test method, which is characterized in that include the following steps：
Step 1, resistance test step；The step 1 includes following sub-step：
Step 1.1：End, the voltage lead end 2 and the cladding being in contact by the current feed end 1 with clad strip
The resistance of clad strip is tested in the end that band is in contact, and obtains the average value of the resistance of clad strip, is denoted as reference resistance；
Step 1.2：According to reference resistance, the normal temperature resistance controlling value after superconducting tape copper facing to be tested is obtained；
Wherein, in step 1.1, the material of the clad strip is stainless steel material；
Step 2：The end being in contact by the current feed end 1 with superconducting tape to be tested, and pass through the voltage
Lead end 2 tests the superconducting tape to be tested for having plated silver-colored protective layer with the end that superconducting tape to be tested is in contact, and obtains
To the normal temperature resistance of superconducting tape to be tested, it is denoted as silver-plated normal temperature resistance；
Step 3：According to silver-plated normal temperature resistance, copper facing is carried out to the superconducting tape to be tested for having plated silver-colored protective layer；
Step 4：The end being in contact by the current feed end 1 with superconducting tape to be tested, and pass through the voltage
Lead end 2 tests the superconducting tape to be tested for having plated copper protective layer with the end that superconducting tape to be tested is in contact, and obtains
To the normal temperature resistance of superconducting tape to be tested, it is denoted as copper facing normal temperature resistance；
Step 5：According to copper facing normal temperature resistance, it is packaged to having plated copper protective layer superconducting tape；
Step 6：End, the voltage lead end 2 being in contact by the current feed end 1 with superconducting tape to be tested
The superconducting tape to be tested encapsulated is tested with the end that superconducting tape to be tested is in contact, determines superconductive tape to be tested
Whether material is qualified.
The step 3 includes following sub-step：
Step 3.1：Any portion in the superconducting tape to be tested for having plated silver-colored protective layer is divided into several sections；
Step 3.2：Several sections of superconducting tape to be tested is classified into, by different copper-plating technique parameters, is grouped examination
Copper facing；
Step 3.3：The end that is in contact by the current feed end 1 with superconducting tape to be tested, the voltage lead
The superconducting tape to be tested of grouping examination plating is respectively tested in the end that end 2 is in contact with superconducting tape to be tested, obtains plating
Copper parameter preset；
Step 3.4：According to copper facing parameter preset to the rest part except any portion of superconducting tape to be tested
Copper facing is carried out as the current superconducting tape to be tested for having plated copper protective layer, obtains normal temperature resistance after copper facing；
The step 5 includes following sub-step：
Step 5.1：Any portion in the current superconducting tape to be tested for having plated copper protective layer is divided into several sections；
Step 5.2：Several sections of superconducting tape to be tested is classified into, by different packaging technology parameters, is grouped examination
Envelope；
Step 5.3：The end that is in contact by the current feed end 1 with superconducting tape to be tested, the voltage lead
The superconducting tape to be tested of grouping examination envelope is respectively tested in the end that end 2 is in contact with superconducting tape to be tested, obtains envelope
Fill parameter preset；
Step 5.4：According to encapsulation parameter preset to the institute of the current superconducting tape to be tested for having plated copper protective layer
It states the rest part except any portion to be packaged, normal temperature resistance after being encapsulated.
If normal temperature resistance is less than or equal to normal temperature resistance controlling value after the copper facing that step 3.4 obtains, and irrelevance is less than
Preset proportion threshold value, the proportion threshold value, such as 10% then enter step 4 and continue to execute, otherwise, then return to step 3.1 after
It is continuous to perform；If normal temperature resistance is less than or equal to normal temperature resistance controlling value after the encapsulation that step 5.4 obtains, and irrelevance is less than in advance
If proportion threshold value, the proportion threshold value, such as 10% then enters step 6 and continues to execute, otherwise, then return to step 5.1 continues
It performs；
If execution by one or many steps 5.1 to step 5.4 performs repeatedly, room temperature electricity after the encapsulation of acquisition
Resistance then adjusts the normal temperature resistance controlling value after superconducting tape copper facing to be tested, return to step 3.1 still greater than normal temperature resistance controlling value
It continues to execute；If step 3.4 obtain copper facing after normal temperature resistance be less than normal temperature resistance controlling value, and irrelevance be more than wait in advance
If proportion threshold value, normal temperature resistance is less than room temperature electricity after the proportion threshold value, such as 10%, or the encapsulation that obtains of step 5.4
Hinder controlling value, and irrelevance preset proportion threshold value, the proportion threshold value, such as 10% such as is more than and then terminates to be tested super
The post processing of conduction band material makes, which reserves for other use.
Wherein several embodiments of the present invention are described further below：
Embodiment 1：
Target superconducting tape normal temperature resistance, i.e. parameter preset are 120 ± 5m Ω/m.Determine the upper and lower layer clad strip of encapsulation all
After stainless steel for 80um thickness, all stainless steel clad strip are tested with test equipment, obtain room temperature resistance average value
For 500m Ω/m.It is controlled in view of there is the factor of scolding tin to release requirement after superconducting tape has plated copper in 240 ± 5m Ω/m.
The superconducting tape for having plated silver-colored protective layer is tested with the test equipment first, multi-point sampler obtains its normal temperature resistance
For 600m Ω/m.The copper-plating technique parameter of superconducting tape is formulated according to the data of test and previous copper-plated experience, uses 180m/h
Walking speed, current source is set as 17A, and copper facing is carried out to having plated silver-colored protective layer superconducting tape.It is protected with the test equipment to having plated copper
The superconducting tape of sheath is tested, and multi-point sampler obtains its normal temperature resistance 260m Ω/m.Copper facing is carried out to copper facing superconducting tape to return
Work, with the walking speed of 180m/h, current source is set as 2A, and copper facing is carried out again to having plated copper protective layer superconducting tape.It is surveyed with this
Trial assembly is standby to test the superconducting tape for having plated copper protective layer again, and multi-point sampler obtains its normal temperature resistance 240m Ω/m.According to
The data of test formulate the packaging technology parameter of superconducting tape, are packaged to having plated copper protective layer superconducting tape, selection is not
Rust steel clad strip, resistance is near average value.The superconducting tape encapsulated is tested with the test equipment, multi-point sampler obtains
Its normal temperature resistance is 124m Ω/m.
Embodiment 2：
Target superconducting tape normal temperature resistance is 120 ± 5m Ω/m.It is all 80um thick not to determine the upper and lower layer clad strip of encapsulation
It becomes rusty after steel, all stainless steel clad strip is tested with test equipment, obtain room temperature resistance average value as 500m Ω/m.It examines
The factor for considering also scolding tin releases superconducting tape and plate requirement after copper and controls in 240 ± 5m Ω/m.
The superconducting tape for having plated silver-colored protective layer is tested with the test equipment first, multi-point sampler obtains its normal temperature resistance
One is 600m Ω/m, and one is 580m Ω/m.According to the data of test, in 5 sections of the clip superconducting tape samples of 600m Ω/m mono-
Product and previous copper-plated experience formulate the copper-plating technique parameter of superconducting tape, and with the walking speed of 180m/h, current source is set as
16.6A, 16.8A, 17A, 17.2A, 17.4A carry out examination copper facing to sample respectively.5 samples are tested with the test equipment,
It is respectively 248m Ω/m, 243m Ω/m, 240m Ω/m, 236m Ω/m, 233m Ω/m that multi-point sampler, which obtains its normal temperature resistance,.Consider
It is one of resistance greatly to this, therefore formal band is coated with the walking speed current source that selection copper-plating technique parameter is 180m/h and is set as
16.8A does the superconducting tape for having plated copper protective layer multi-point sampler again with the test equipment, and multi-point sampler obtains its room temperature electricity
Resistance one is 241m Ω/m, and one is 236m Ω/m.According to the data of test, the packaging technology parameter of superconducting tape is formulated,
5 sections of the clip superconducting tape samples of 241m Ω/m mono- and the experience encapsulated in the past formulate the packaging technology parameter of superconducting tape.It is first
Clad strip is chosen in choosing, chooses target resistance little by little 510m Ω/m bigger than normal than average value, clad strip is made of the test equipment more
Point test verification.To 5 sections of samples, it is packaged in 218 DEG C, 220 DEG C, 222 DEG C, 224 DEG C, 226 DEG C of furnace temperature.With the test equipment
5 samples are tested, it is respectively 125m Ω/m, 124m Ω/m, 123m Ω/m, 121m that multi-point sampler, which obtains its normal temperature resistance,
Ω/m、119mΩ/m.It is big one of resistance in view of this, therefore it is 224 DEG C that copper-plating technique parameter is chosen in formal band encapsulation
Furnace temperature, multi-point sampler is done to the superconducting tape encapsulated with the test equipment, multi-point sampler obtains its normal temperature resistance one and is
121m Ω/m, one is 119m Ω/m.
Embodiment 3：
Target superconducting tape normal temperature resistance is 120 ± 5m Ω/m.It is all 80um thick not to determine the upper and lower layer clad strip of encapsulation
It becomes rusty after steel, all stainless steel clad strip is tested with test equipment, obtain room temperature resistance average value as 500m Ω/m.It examines
The factor for considering also scolding tin releases superconducting tape and plate requirement after copper and controls in 240 ± 5m Ω/m.
The superconducting tape for having plated silver-colored protective layer is tested with the test equipment first, multi-point sampler obtains its normal temperature resistance
One is 600m Ω/m, and one is 580m Ω/m.According to the data of test, in 5 sections of the clip superconducting tape samples of 600m Ω/m mono-
Product and previous copper-plated experience formulate the copper-plating technique parameter of superconducting tape, and with the walking speed of 180m/h, current source is set as
16.6A, 16.8A, 17A, 17.2A, 17.4A carry out examination copper facing to sample respectively.5 samples are tested with the test equipment,
It is respectively 248m Ω/m, 243m Ω/m, 240m Ω/m, 236m Ω/m, 233m Ω/m that multi-point sampler, which obtains its normal temperature resistance,.Consider
It is one of resistance greatly to this, therefore formal band is coated with the walking speed current source that selection copper-plating technique parameter is 180m/h and is set as
16.8A does the superconducting tape for having plated copper protective layer multi-point sampler again with the test equipment, and multi-point sampler obtains its room temperature electricity
Resistance one is 241m Ω/m, and one is 236m Ω/m.According to the data of test, the packaging technology parameter of superconducting tape is formulated,
5 sections of the clip superconducting tape samples of 241m Ω/m mono- and the experience encapsulated in the past formulate the packaging technology parameter of superconducting tape.It is first
Clad strip is chosen in choosing, chooses target resistance little by little 510m Ω/m bigger than normal than average value, clad strip is made of the test equipment more
Point test verification.To 5 sections of samples, it is packaged in 218 DEG C, 220 DEG C, 222 DEG C, 224 DEG C, 226 DEG C of furnace temperature.With the test equipment
5 samples are tested, it is respectively 135m Ω/m, 134m Ω/m, 133m Ω/m, 131m that multi-point sampler, which obtains its normal temperature resistance,
Ω/m、129mΩ/m.Again choose more low-resistance stainless steel clad strip, choose target resistance 470m Ω less than normal than average value/
M does clad strip multi-point sampler verification with the test equipment.To 5 sections of samples, 218 DEG C, 220 DEG C, 222 DEG C, 224 DEG C, 226
DEG C furnace temperature is packaged.5 samples are tested with the test equipment, it is respectively 131m that multi-point sampler, which obtains its normal temperature resistance,
Ω/m、130mΩ/m、129mΩ/m、128mΩ/m、126mΩ/m.More low-resistance stainless steel clad strip is looked for again, finds do not have
.Therefore formal band copper facing again is coated with the walking speed current source that selection copper-plating technique parameter is 180m/h and is set as 1A, with this
Test equipment does the superconducting tape for having plated copper protective layer multi-point sampler again, and multi-point sampler obtains its normal temperature resistance one and is
235m Ω/m, one is 231m Ω/m.Target resistance 470m Ω/m less than normal than average value is chosen, with the test equipment to clad strip
Do multi-point sampler verification.To 5 sections of samples, it is packaged in 218 DEG C, 220 DEG C, 222 DEG C, 224 DEG C, 226 DEG C of furnace temperature.In 235m
5 sections of the clip superconducting tape samples of Ω/m mono- and the experience encapsulated in the past formulate the packaging technology parameter of superconducting tape.It is surveyed with this
Trial assembly is standby to test 5 samples, multi-point sampler obtain its normal temperature resistance be respectively 124m Ω/m, 123m Ω/m, 122m Ω/m,
120mΩ/m、119mΩ/m.It is big one of resistance in view of this, therefore formal band encapsulation selection copper-plating technique parameter is
222 DEG C of furnace temperature does the superconducting tape encapsulated multi-point sampler with the test equipment, and multi-point sampler obtains its normal temperature resistance one
Head is 120m Ω/m, and one is 119m Ω/m.
It should be noted that, although above-described embodiment be all from relatively high normal temperature resistance that carry out segmentation cut out；
But it is not limited to this, that can also carry out cutting segmentation from relatively low normal temperature resistance.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or change within the scope of the claims, this not shadow
Ring the substantive content of the present invention.In the absence of conflict, the feature in embodiments herein and embodiment can arbitrary phase
Mutually combination.
Claims (9)
1. a kind of high-temperature superconductor band test device, which is characterized in that including box body (9), operation portion and display unit；
The operation portion, display unit are arranged on box body (9)；
The operation portion includes current feed end (1), voltage lead end (2), metallic plate (3) and elbow folder (8)；
The display unit includes resistance display (5), temperature control display (6) and Current Display (7)；
It is set fluted (4) on the metallic plate (3)；
The groove (4) forms superconducting tape to be tested and accommodates limitation space；
The side of the metallic plate (3) is provided with elbow folder (8)；
The end set of the elbow folder (8) has current feed end (1), voltage lead end (2)；
The current feed end (1), voltage lead end (2) are insulated with elbow folder (8)；
The resistance display (5), temperature control display (6) and Current Display (7) are arranged on box body (9).
2. high-temperature superconductor band test device according to claim 1, which is characterized in that the current feed end (1), electricity
Voltage lead wires end (2) is in contact with superconducting tape to be tested；
The end that the current feed end (1) is in contact with superconducting tape to be tested is plane；
The end that the voltage lead end (2) is in contact with superconducting tape to be tested is the conical surface；
Insulating materials is coated on the groove (4).
3. high-temperature superconductor band test device according to claim 2, which is characterized in that the voltage lead end (2) with
The end that superconducting tape to be tested is in contact is located at the midpoint of superconducting tape width direction to be tested.
4. high-temperature superconductor band test device according to claim 1, which is characterized in that the bottom of the metallic plate (3)
It is provided with heating plate；
Thermocouple is embedded on the metallic plate (3).
5. high-temperature superconductor band test device according to claim 4, which is characterized in that the temperature controls display
(6) control button is provided on；
The control button controls metallic plate (3) constant temperature constant by heating plate and thermocouple.
6. high-temperature superconductor band test device according to claim 1, which is characterized in that the resistance display (5) is used
The voltage on superconducting tape to be tested measured in display voltage lead end (2)；
The Current Display (7) is for showing electric current that current feed end (1) is flowed through by superconducting tape to be tested；
When elbow folder (8) is opened, superconducting tape to be tested can be placed into superconducting tape accommodation space to be tested,
When elbow folder (8) is closed, superconducting tape to be tested, and shape are pushed down in the current feed end (1) and voltage lead end (2)
Into being conductively connected.
7. a kind of high-temperature superconductor band test device using described in any one of claim 1 to 6 is to superconductor to be tested
The test method tested, which is characterized in that include the following steps：
Step 2：The end being in contact by the current feed end (1) with superconducting tape to be tested, and pass through the voltage and draw
Line end (2) tests the superconducting tape to be tested for having plated silver-colored protective layer with the end that superconducting tape to be tested is in contact, and obtains
To the normal temperature resistance of superconducting tape to be tested, it is denoted as silver-plated normal temperature resistance；
Step 3：According to silver-plated normal temperature resistance, copper facing is carried out to the superconducting tape to be tested for having plated silver-colored protective layer；
Step 4：The end being in contact by the current feed end (1) with superconducting tape to be tested, and pass through the voltage and draw
Line end (2) tests the superconducting tape to be tested for having plated copper protective layer with the end that superconducting tape to be tested is in contact, and obtains
To the normal temperature resistance of superconducting tape to be tested, it is denoted as copper facing normal temperature resistance；
Step 5：According to copper facing normal temperature resistance, it is packaged to having plated copper protective layer superconducting tape；
Step 6：End, the voltage lead end (2) being in contact by the current feed end (1) with superconducting tape to be tested
The superconducting tape to be tested encapsulated is tested with the end that superconducting tape to be tested is in contact, determines superconductive tape to be tested
Whether material is qualified.
8. high-temperature superconductor band test method according to claim 7, which is characterized in that the step 3 includes following son
Step：
Step 3.1：Any portion in the superconducting tape to be tested for having plated silver-colored protective layer is divided into several sections；
Step 3.2：Several sections of superconducting tape to be tested is classified into, by different copper-plating technique parameters, is grouped examination copper facing；
Step 3.3：End, the voltage lead end being in contact by the current feed end (1) with superconducting tape to be tested
(2) superconducting tape to be tested of grouping examination plating is respectively tested in the end being in contact with superconducting tape to be tested, obtains plating
Copper parameter preset；
Step 3.4：The rest part except any portion of superconducting tape to be tested is carried out according to copper facing parameter preset
Copper facing obtains normal temperature resistance after copper facing as the current superconducting tape to be tested for having plated copper protective layer；
The step 5 includes following sub-step：
Step 5.1：Any portion in the current superconducting tape to be tested for having plated copper protective layer is divided into several sections；
Step 5.2：Several sections of superconducting tape to be tested is classified into, by different packaging technology parameters, is grouped examination envelope；
Step 5.3：End, the voltage lead end being in contact by the current feed end (1) with superconducting tape to be tested
(2) superconducting tape to be tested of grouping examination envelope is respectively tested in the end being in contact with superconducting tape to be tested, obtains envelope
Fill parameter preset；
Step 5.4：According to encapsulation parameter preset to it is described it is current plate the superconducting tape to be tested of copper protective layer described in times
Rest part except a part is packaged, normal temperature resistance after being encapsulated.
9. high-temperature superconductor band test method according to claim 7, which is characterized in that further include step 1, resistance test
Step；
The step 1 includes following sub-step：
Step 1.1：End, the voltage lead end (2) and the cladding being in contact by the current feed end (1) with clad strip
The resistance of clad strip is tested in the end that band is in contact, and obtains the average value of the resistance of clad strip, is denoted as reference resistance；
Step 1.2：According to reference resistance, the normal temperature resistance controlling value after superconducting tape copper facing to be tested is obtained；
Wherein, in step 1.1, the material of the clad strip is stainless steel material；
If normal temperature resistance is less than or equal to normal temperature resistance controlling value after the copper facing that step 3.4 obtains, and irrelevance is less than default
Proportion threshold value, then enter step 4 and continue to execute, otherwise, then return to step 3.1 continues to execute；
If normal temperature resistance is less than or equal to normal temperature resistance controlling value after the encapsulation that step 5.4 obtains, and irrelevance is less than default
Proportion threshold value, then enter step 6 and continue to execute, otherwise, then return to step 5.1 continues to execute；If by one or many
Step 5.1 to step 5.4 execution or perform repeatedly, normal temperature resistance is still greater than normal temperature resistance controlling value after the encapsulation of acquisition, then
The normal temperature resistance controlling value after superconducting tape copper facing to be tested is adjusted, return to step 3.1 continues to execute；If step 3.4 obtains
Copper facing after normal temperature resistance be less than normal temperature resistance controlling value, and irrelevance be more than etc. preset proportion threshold value；Or step
5.4 obtain encapsulation after normal temperature resistance be less than normal temperature resistance controlling value, and irrelevance be more than etc. preset proportion threshold value, then tie
The post processing of beam superconducting tape to be tested makes.
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