CN110071713A - For conducting cooling superconducting switch and its superconducting magnet apparatus - Google Patents
For conducting cooling superconducting switch and its superconducting magnet apparatus Download PDFInfo
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- CN110071713A CN110071713A CN201910157694.2A CN201910157694A CN110071713A CN 110071713 A CN110071713 A CN 110071713A CN 201910157694 A CN201910157694 A CN 201910157694A CN 110071713 A CN110071713 A CN 110071713A
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- 238000001816 cooling Methods 0.000 title claims abstract description 111
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 59
- 238000010438 heat treatment Methods 0.000 claims abstract description 58
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000010949 copper Substances 0.000 claims description 51
- 229910052802 copper Inorganic materials 0.000 claims description 51
- 239000010410 layer Substances 0.000 claims description 12
- 239000011241 protective layer Substances 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 7
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- 238000010791 quenching Methods 0.000 abstract description 11
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- 229910052734 helium Inorganic materials 0.000 description 14
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 14
- 239000007788 liquid Substances 0.000 description 11
- 239000002826 coolant Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229910001006 Constantan Inorganic materials 0.000 description 1
- 229910001275 Niobium-titanium Inorganic materials 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000006854 communication Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- RJSRQTFBFAJJIL-UHFFFAOYSA-N niobium titanium Chemical compound [Ti].[Nb] RJSRQTFBFAJJIL-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/04—Cooling
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/92—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of superconductive devices
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N60/00—Superconducting devices
- H10N60/30—Devices switchable between superconducting and normal states
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Abstract
The invention discloses a kind of for conducting cooling superconducting switch and its superconducting magnet apparatus, switch superconducting coil, switch conduction cooling coil, the switch heating coil including switch skeleton and coiling on the switch skeleton；Superconducting coil and switch conduction cooling coil spacing coiling are switched, the both ends difference leading-out copper wire cable and current feed for switching superconducting coil form Four long-base method measure of resistance circuit, judge whether superconducting switch enters by way of detection coil resistance and quench or non-quench state；The cold head at the both ends and superconducting magnet apparatus that switch conduction cooling coil is thermally connected；Heating coil fitting switch superconducting coil coiling is switched, switchs the both ends leading-out copper wire cable of heating coil for galvanization heater switch superconducting coil.The present invention solves the problems, such as that the superconducting switch cooling efficiency for conducting cooling is low, the real time problems of superconducting switch and the detection of the main superconducting coil state of cooling, and conducts coil charge and discharge and coil protection problem that cooling superconducting switch is used on conduction cooling superconducting magnet.
Description
Technical field
It is the present invention relates to superconducting magnet, in particular to a kind of for conducting cooling superconducting switch and its superconducting magnet dress
It sets.
Background technique
With the development of superconductor technology, application of the superconducting magnet in fields such as high-energy physics, medical treatment, military project, scientific researches is more next
More universal, type is also more and more.Wherein most commonly seen is using coolants such as liquid helium, liquid nitrogen that the coil in magnet is cooling
To the superconducting magnet of superconducting state, this kind of superconducting magnet superconducting switch directly cooling comprising coolant, but this kind of superconducting magnet
Often because of the rarity and risk of coolant and operating cost with higher and security risk, the in addition system of coolant
The equipment that standby, storage, transport require special condition and valuableness, also brings many problems of management.Another superconducting magnet is not
Using coolant, and by the way of air compressor+cold head, the coil in magnet is directly cooled to superconducting state.It is this
Mode is suitble to the Suctmg magnet that some running currents are not high, energy storage is less, and this kind of superconducting magnet be usually do not include it is super
Switch is led, therefore is unable to operation with closed ring, needs power supply power supply that could work.And the conduction cooling superconducting magnet of operation with closed ring needs
The superconducting switch to use conduction cooling, related literatures are very rare.
In addition to this, occurs a kind of concept of few liquid helium superconducting magnet in recent years, i.e. superconducting coil and superconducting switch is not required to
It is immersed in liquid helium, but minute quantity liquid helium is enclosed in pipeline, and is connected to cold head, liquid helium and cold helium pass through centainly
Path circulate in superconducting coil, superconducting switch and support construction surrounding loop, so that liquid helium cooling capacity diffusion is played conduction cooling
Effect, makes superconducting coil and superconducting switch be cooled to superconducting state.This superconducting switch has similar with above-mentioned superconducting switch
Feature is immersed in liquid helium by conducting cooling.But it is laid out and constructs not related patents or data explanation
And presentation.
Application No. is 201410655318.3 patent applications to disclose a kind of superconduction for conduction cooling superconducting magnet
Switch is formed using copper switch skeleton, the superconducting coil of noninductive coiling, heating rod, cool guiding rod, thermometer in that patent
Conduction cooling type superconduction switch.Wherein cool guiding rod one end connection switch skeleton, one end connect superconducting magnet framework；Heating rod arrangement
On the switch skeleton, thermometer is also mounted in switch skeleton.Other scheme superconducting switch some use metal or nonmetallic bone
Frame, or using the superconducting coil and heating coil of noninductive coiling, but most not considerations are suitable for conducting cooling design,
Not the problem of not mentioning the charge and discharge problem and coil protection for the conduction cooling superconducting magnet that superconducting switch is used for operation with closed ring.
In above-mentioned patent application, cool guiding rod one end connects superconducting switch skeleton, and one end connects superconducting magnet framework, superconducting magnetic
Body needs first to cool down magnet skeleton, then cooling superconducting switch, and speed is slower, and switchs superconducting coil and only rely on skeleton and cool guiding rod
Contact cool down indirectly, it is relatively time-consuming to the temperature equalization that reaches entire superconducting switch.In addition it installs on the switch skeleton
What thermometric temperature reflected is the temperature of thermometer contact position, can not reflect the temperature of switch superconducting coil in real time
And state, this is because there is heat transfer delay between switch skeleton and superconducting coil, even if thermometer measure value reaches coil and surpasses
State temperature is led, coil is not necessarily superconducting state at this time.Also there is same limitation on the cooling magnet of conduction.In addition, related
The cooling superconducting switch of conduction is used to conduct the charge and discharge problem and coil protection problem of cooling superconducting magnet, and there is no mentioned
And.
Summary of the invention
The purpose of the present invention is overcoming deficiency in the prior art, provide it is a kind of for conduct cooling superconducting switch and its
Superconducting magnet apparatus solves the problems, such as to conduct cooling superconducting switch cooling efficiency in the prior art low, superconducting switch and main super
The real time problems of loop state of cooling detection, and cooling superconducting switch is conducted for the coil on conduction cooling superconducting magnet
Charge and discharge and coil protection problem.
The technical scheme adopted by the invention is that: it is a kind of for conducting cooling superconducting switch, including switch skeleton and around
Make switch superconducting coil, switch conduction cooling coil, switch heating coil in the switch skeleton；The switch superconducting coil and
The switch conduction cooling coil spacing coiling is simultaneously equipped with three layers altogether, the whole story both ends leading-out copper wire cable conduct of the switch superconducting coil
Resistance detection line, meanwhile, the whole story both ends extracted current lead of the switch superconducting coil, the current feed and the switch
The copper cable at superconducting coil whole story both ends forms Four long-base method measure of resistance circuit, by detecting the switch superconducting coil resistance
Mode judges whether superconducting switch enters and quenches or non-quench state；The whole story both ends of the switch conduction cooling coil and superconducting magnet
The cold head of device is thermally connected；The switch heating coil is bonded the switch superconducting coil coiling, the switch heater wire
The whole story both ends leading-out copper wire cable of circle heats the switch superconducting coil for galvanization.
Wherein, the conduction cooling component of the whole story both ends connection superconducting magnet apparatus of the switch conduction cooling coil, is led by described
Cold part is connected with the cold head of superconducting magnet apparatus.
Further, superconducting switch of the present invention further includes the copper annular anchor ear encircled outside outermost layer coil, and connection
The flexible copper of the switch skeleton connects.
Wherein, the whole story both ends of the switch conduction cooling coil are fixed in the switch skeleton, are connected to the switch bone
Flexible copper connection on frame is connected with the cold head of superconducting magnet apparatus, realizes the switch conduction cooling coil and superconducting magnet
The connection of the cold head of device.
Wherein, the both ends of the surface of the switch skeleton are provided at least two inlet-outlet line gaps and several threaded holes, described
Wire column is provided in threaded hole；The switch superconducting coil and the switch double-end copper cable of heating coil are each attached to institute
It states on wire column.
Wherein, the switch superconducting coil and switch heating coil are all made of noninductive manner of double wrap and are wound on the switch bone
On frame, hung in the inlet-outlet line gap of the switch skeleton at the folding of the switch superconducting coil and switch heating coil.
It is of the present invention another solution is that a kind of conduction cooling superconducting magnet device, including above-mentioned superconduction are opened
Close, main superconducting coil, vacuum tank, radiation protective layer, cold head, magnet charge-discharge circuit, heating power supply, resistance/pressure measuring instrument,
Conduction cooling component；The radiation protective layer setting is connected in the vacuum tank, and with the level-one flange of the cold head；The master
Superconducting coil and superconducting switch are located in the vacuum tank, and the magnet charge-discharge circuit, heating power supply, resistance/voltage are surveyed
Amount instrument is located at outside the vacuum tank；The switch superconducting coil of the main superconducting coil and the superconducting switch is electrically connected,
The current feed at the switch superconducting coil whole story both ends connects the magnet charge-discharge circuit；The whole story of the main superconducting coil
Double-end copper cable, the copper cable at the switch superconducting coil whole story both ends and positioned at the switch superconducting coil two sides
The copper cable drawn on current feed is all connected with the resistance/pressure measuring instrument；The switch heating coil of the superconducting switch begins
The copper cable at last both ends connects the heating power supply；The switch conduction cooling line of the main superconducting coil, current feed and superconducting switch
Circle is thermally connected with the second level flange of the cold head.
Wherein, the magnet charge-discharge circuit is made of charge power supply with energy multicell is let out, and described let out can multicell
It is formed by least two diode reverse parallel connection.
Wherein, the main superconducting coil is connected in series by several subcoils, and the both ends of each subcoil are drawn
Copper cable, is connected with that let out can multicell between adjacent copper cable；The copper cable at each subcoil both ends is all connected with described
Resistance/pressure measuring instrument.
Wherein, the main superconducting coil and current feed are connected by the conduction cooling component with the second level flange of the cold head
It connects, the connection of flexible copper in the switch skeleton that the switch conduction cooling coil of the superconducting switch passes through the superconducting switch or described leads
Cold part is connected with the second level flange of the cold head.
The beneficial effects of the present invention are:
1. superconducting switch of the present invention, not only can be by switch superconducting coil, switch conduction cooling coil, switch heater coil wraps
On the switch skeleton, conduction cooling coil whole story end is fixed on the switch skeleton, and switch skeleton is connected to cold head two further through flexible copper
Grade flange, but also hollow tubule can be set by switch conduction cooling coil, a small amount of liquid helium and helium are carried out to meet the needs of
Carry out the cooling situation of pipeline, this construction of switch formed between cold head and switch superconducting coil it is straight-through, come into contact in a large area
Cooling path, allow superconducting switch faster, more uniformly cold.
2. with the mode of detection switch superconducting coil resistance, main superconducting coil resistance, instead of the mode that temperature measures, to sentence
Disconnected superconducting switch and main superconducting coil whether enter quench or it is non-quench state, there is very high real-time and sensitivity, can keep away
The delay for exempting from temperature measurement, prevents from judging by accident.
3. the conduction cooling superconducting magnet device of pair this superconducting switch of use, both can be with operation with closed ring, can also be with open loop
Operation.When open loop operation, it is only necessary to which charge power supply opens switch heating coil simultaneously in the case where stablizing output electric current, needs to close
Shutdown switch heating coil when inscription of loop.
4. quenching situation there is any coil, letting out energy diode will be opened, and play protection power source and superconducting switch, master
The energy of the main superconducting coil in part can also be exported magnetic when Sheng Chang, drop field quench by the effect of superconducting coil, current feed
Body prevents magnetic body temperature excessively high, reduces the cooling capacity consumption to cool down again.And by detecting between each coil and current feed
Voltage, can know head quench coil and quench sequence, be convenient for subsequent problem analysis.
5. conduction cooling superconducting magnet device of the present invention directly cools down main superconducting coil by cold head second level flange and superconduction is opened
It closes, by the directly cooling radiation protective layer of cold head level-one flange, it is possible to reduce part cooling capacity makes magnet faster in the consumption of communication process
Pass in and out superconducting state.
Detailed description of the invention
Fig. 1: superconducting switch structural schematic diagram of the invention；
Fig. 2: the end structure illustration of the switch skeleton of superconducting switch of the invention；
Fig. 3: superconducting magnet apparatus structural schematic diagram of the invention；
Fig. 4: the work flow diagram of superconducting switch and its superconducting magnet apparatus of the invention.
Attached drawing mark: 1- switch skeleton, 2- switch superconducting coil, 3- switch conduction cooling coil, 4- switch heating coil, 5- ring
Shape anchor ear, the connection of 6- flexible copper, 7- wire column, 8- inlet-outlet line gap, 9- threaded hole, 10- copper cable, 11- superconducting switch, 12-
Main superconducting coil, 13- magnet charge-discharge circuit, 14- level-one flange, 15- second level flange, 16- radiation protective layer, 17- vacuum tank,
18- heating power supply, 19- charge power supply, 20- are let out can multicell, 21- current feed, 22- cold head, 23- resistance/voltage measurement
Instrument.
Specific embodiment
In order to further understand the content, features and effects of the present invention, the following examples are hereby given, and cooperate attached drawing
Detailed description are as follows:
Embodiment one
The superconducting magnet scene that the present embodiment one is recycled pipeline suitable for no liquid helium and helium, can make superconducting magnet
More evenly quickly reach thermal balance.
As shown in figure 1 and 2, a kind of for conducting cooling superconducting switch, including switch skeleton 1, it is wound on described open
Switch superconducting coil 2, switch conduction cooling coil 3 and the switch heating coil 4 on skeleton 1 are closed, and is encircled outside outermost layer coil
Copper annular anchor ear 5, and the flexible copper connection 6 of the connection switch skeleton 1.
The switch skeleton 1 is formed by copper rod or copper pipe (aluminium bar or aluminum pipe take second place) overall processing, is opened in two end flanges
There are at least two inlet-outlet line gaps 8 and several threaded holes 9；Wire column 7 is provided in the threaded hole 9.
The switch superconducting coil 2 and the switch conduction cooling coil 3 are spaced coiling and altogether equipped with three layers, can be the bottom
It is the switch superconducting coil 2 with top layer, middle layer is the switch conduction cooling coil 3；It is also possible to the bottom and top layer
For the switch conduction cooling coil 3, middle layer is the switch superconducting coil 2.It draws at the whole story both ends of the switch superconducting coil 2
Copper cable 10 is used as resistance detection line, meanwhile, the whole story both ends extracted current lead 21 of the switch superconducting coil 2, the electricity
The copper cable 10 for flowing lead 21 and switch 2 whole story both ends of superconducting coil forms Four long-base method measure of resistance circuit, passes through detection
The mode of switch 2 resistance of superconducting coil judges whether superconducting switch 11 enters and quenches or non-quench state.The switch is led
The whole story both ends of cold line circle 3 are fixed in the switch skeleton 1, meanwhile, the flexible copper being connected in the switch skeleton 1
Connection 6 is connected with the cold head 22 of superconducting magnet apparatus, realizes the cold head 22 of switch the conduction cooling coil 3 and superconducting magnet apparatus
Connection.The switch heating coil 4 is bonded 2 coiling of switch superconducting coil, the whole story both ends of the switch heating coil 4
Leading-out copper wire cable 10 heats the switch superconducting coil 2 for galvanization.The switch superconducting coil 2, switch conduction cooling coil 3
There is electrically independent property with switch heating coil 4, mutually insulated is preferably integrated into a whole by thermal conductivity low-temperature resins.Institute
It states under switch 2 low temperature of superconducting coil in superconducting state, the preferred niobium titanium wire of wire rod (three tin of suboptimum niobium)；The switch conduction cooling coil 3
It can be high-quality copper cable or aluminum steel cable；The switch heating coil 4 be resistance alloy (preferably constantan line or other outside
Apply the resistance alloy of insulating layer).The switch superconducting coil 2 and switch heating coil 4 have insulating layer, are all made of noninductive double
It is wound in the switch skeleton 1 around mode, in the inlet-outlet line gap 8 that the switch skeleton 1 is hung at folding.The switch
Superconducting coil 2 and the switch double-end copper cable 10 of heating coil 4 are the copper conductor of overcoating insulated hull, and are fixed on described
On wire column 7, and leading to outside superconducting magnet, 7 material of wire column is preferably nonmetallic, if it is metal, copper cable 10
Fixed form should ensure that insulation.
5 both ends of annular anchor ear are overlapped on the both ends of the switch skeleton 1, with the switch skeleton 1, switch superconducting line
Circle 2, switch conduction cooling coil 3 and switch heating coil 4 are integrated into a whole by low-temperature resins.The one of the flexible copper connection 6
End is fixed in the switch skeleton 1, and the other end connects the second level flange 15 of the cold head 22 of superconducting magnet apparatus.
Embodiment two
The present embodiment two recycled pipeline suitable for a small amount of liquid helium and helium so that cooling capacity spread so that reach conduction it is cold
But the superconducting magnet scene of purpose, can make superconducting magnet more evenly quickly reach thermal balance.
It is a kind of for conducting cooling superconducting switch, on the basis of the superconducting switch shown in embodiment one, removal annular
Anchor ear 5 connects 6 with flexible copper, only includes switch skeleton 1 and the switch superconducting coil 2 being wound in the switch skeleton 1, switch
Conduction cooling coil 3, switch heating coil 4.
The structure type of the switch skeleton 1, the switch superconducting coil 2, switch conduction cooling coil 3 and switch heating coil
4 arrangement is the same as example 1, it is described switch superconducting coil 2 and switch heating coil 4 material select also with reality
It is identical to apply example one, and the switch conduction cooling coil 3 then uses thin copper pipe or thin aluminum pipe, the whole story two of the switch conduction cooling coil 3
The conduction cooling component of end connection superconducting magnet apparatus, is connected by the conduction cooling component with the cold head 22 of superconducting magnet apparatus.
As shown in Fig. 3, use the conduction of superconducting switch 11 described in above-described embodiment one or embodiment two cooling super
Magnetic conduction body device further includes main superconducting coil 12, electric current in addition to the superconducting switch 11 described in above-described embodiment one or embodiment two
Lead 21, vacuum tank 17, radiation protective layer 16, cold head 22, magnet charge-discharge circuit 13, resistance/pressure measuring instrument 23, conduction cooling portion
Part etc..The radiation protective layer 16 is included in the vacuum tank 17, surrounds the main superconducting coil 12, superconducting switch 11, electricity
Lead 21 is flowed, and is directly connected to the level-one flange 14 of the cold head 22.The magnet charge-discharge circuit 13, heating power supply 18,
Resistance/pressure measuring instrument 23 is located at outside the vacuum tank 17.The switch of the main superconducting coil 12 and the superconducting switch 11
Superconducting coil 2 is electrically connected, and the current feed 21 at switch 2 whole story both ends of superconducting coil connects the magnet charge and discharge electricity
Road 13, the magnet charge-discharge circuit 13 are made of charge power supply 19 with energy multicell 20 is let out, and described let out can multicell 20
It is formed by least two diode reverse parallel connection, the conducting voltage of the diode is higher than the main superconducting coil 12 when charging
Induced voltage can protect the charge power supply 19, superconducting switch 11 and current feed 21；It is described let out can multicell 20 can be with
One resistance enhancing of selection series connection is let out can ability；The charge power supply 19 is enabled when going up and down field, and other times disconnect.The master
Superconducting coil 12 is connected in series by least two subcoil, is generally ridden on skeleton made of metal, or is otherwise fixed
Inside the vacuum tank 17 and radiation protective layer 16；The equal leading-out copper wire cable 10 in the both ends of each subcoil, adjacent copper
It is connected between cable 10 and lets out energy multicell 20, the conducting voltage for letting out energy multicell 20 is above sub-line connected in parallel
Circle rises induced voltage when field；The copper cable 10 at each subcoil both ends, the copper for switching 2 whole story both ends of superconducting coil
Cable 10 and on the current feed 21 of switch 2 two sides of superconducting coil the copper cable 10 drawn be all connected with the resistance/
Pressure measuring instrument 23, wherein the 21 leading-out copper wire cable 10 of current feed connects the resistance/pressure measuring instrument 23, is electricity consumption
Resistance detects the effect to replace thermometer, while letting out switch superconducting coil 2 and main superconducting line described in energy diode pair by connection
Circle 12 plays a protective role when being powered.The copper cable 10 at switch 4 whole story both ends of heating coil of the superconducting switch 11 connects institute
State heating power supply 18；The second level method that the main superconducting coil 12 and current feed 21 pass through the conduction cooling component and the cold head 22
Orchid 15 is thermally connected, and the conduction cooling component is a series of combination of heat transfer structures, and cooling capacity is transmitted to each of superconducting magnet apparatus
A position, so that system is finally reached low-temperature balance；When using superconducting switch 11 described in embodiment one, the superconducting switch
Flexible copper connection 6 and the two of the cold head 22 in the switch skeleton 1 that 11 switch conduction cooling coil 3 passes through the superconducting switch 11
Grade flange 15 is connected, when using superconducting switch 11 described in embodiment two, the switch conduction cooling coil 3 of the superconducting switch 11
Form be actually hollow thin metal pipe, it is connected by the second level flange 15 of the pipeline of conduction cooling component and the cold head 22
It connects.In operation with closed ring, the magnet charge-discharge circuit 13 can remove or remove one therein.
When superconducting magnet apparatus cools, due to not having electric current in circuit at this time, diode, which is not turned on, is equivalent to open circuit,
Resistance/the pressure measuring instrument 23 replaces thermometer by detecting the switch superconducting coil 2 and the main superconducting coil 12
The resistance of each subcoil, since the cold quality of superconducting switch 11 is small, is always entered at first with judging whether it enters superconducting state
Superconducting state has following several situations:
1. the subcoil when superconducting switch 11 and main superconducting coil 12 does not all enter superconducting state, then superconducting switch 11 and each
Main superconduction subcoil both ends resistance is not zero.
2. when the entrance superconducting state of superconducting switch 11, other main superconduction subcoils all do not enter superconducting state, then superconduction is opened
The resistance for closing 11 both ends is zero, and other main superconduction subcoil both ends resistance are not zero；
3. when superconducting switch 11 enters superconducting state, and other main superconduction subcoil parts enter superconducting state, then uses and add
Thermoelectric generator 18 makes it restore non-superconducting state to the heating of switch heating coil 4 of superconducting switch 11, and the master for being now in superconducting state is super
Guide coil both ends resistance is zero, and the main superconduction subcoil both ends resistance of non-superconducting state is not zero.
4. when superconducting switch 11 and main superconduction subcoil all enter superconducting state, with heating power supply 18 to superconducting switch 11
The switch heating of heating coil 4 makes it restore non-superconducting state, and resistance is zero between each coil.
Accordingly, after confirming that main superconduction subcoil all enters superconducting state, continue the heating for switching heating coil 4, it can be into
Row rises field operation, and heating coil 4 is turned off the switch if it wouldn't rise field.It is reduced using expensive thermometer in this way to reduce cost,
And increase detection sensitivity.
When superconducting magnet apparatus rises field by the charging of charge power supply 19, starting switch the heating of heating coil 4 makes to switch superconducting line
Circle 2 is in non-superconducting state, and main superconducting coil 12 is in superconducting state at this time, and then the electric current in main superconducting coil 12 can be by
Edge up height, and magnet is magnetized；When closed loop, cut-out switch heating coil 4, switch conduction cooling coil 3 can be quickly by the second level of cold head 22
The cooling capacity that flange 15 generates, which is transmitted to switch superconducting coil 2, makes it progress into superconducting state, so that electric current be made to transfer by switch
Superconducting coil 2 makes magnet realize operation with closed ring, if you do not need to then always on switch heating coil 4 keeps charging to operation with closed ring
The outputting current steadily of power supply 19 is completed to drop field to 0A until reducing 19 electric current of charge power supply when needing to drop field；Superconducting magnetic
When body device drops field by closed loop states, then charge power supply 19 is first connected, opening switch heating coil 4 loses switch superconducting coil 2
It is super, so that electric current be made to transfer by letting out energy multicell 20 and charge power supply 19, loop current in magnet charge-discharge circuit 13
It will be gradually decrease to 0A.
It, can be detecting its state by way of detecting the resistance or voltage of superconducting coil, especially in operation described above
It is not only each to let out energy when it is that main superconducting coil 12, superconducting switch 11, current feed 21 quench situation under any circumstance
Multicell 20 can automatically turn on let out can with protect main superconducting coil 12, switch superconducting coil 2, current feed 21 and charging electricity
Source 19, and head will be seen that by the voltage diagnostic of main superconducting coil 12, superconducting switch 11,21 both ends copper cable 10 of current feed
It quenches coil and quenches sequence, provide foundation for problem analysis.
It is super the purpose is to improve according to above-described for conducting cooling superconducting switch 11 and its superconducting magnet apparatus
The cooling efficiency of switch 11 and the real-time and sensitivity of superconducting coil state-detection are led, and provides superconducting switch 11 for conducting
The charge and discharge of cooling superconducting magnets device and coil protection scheme.Existing patent as previously described, can use other structures and is made
Similar superconducting switch 11 improves the real-time and sensitivity of test using multiple thermometers as close as possible to superconducting coil, but not
There must be the advantage of the present invention program.
Specifically, can such as be modified heating coil may not necessarily one circle of a circle be wrapped in switch superconducting coil 2 on,
It can be substituted using the netted heating sheet with insulating layer.In short, utilizing the conduction cooling superconducting magnet of 11 closed loop of superconducting switch
Document is less, is familiar with current row dealer and carries out small change or deformation perhaps may be implemented, but may be not easy complete this hair of escape
Bright described structure and scheme.
Although the preferred embodiment of the present invention is described above in conjunction with attached drawing, the invention is not limited to upper
The specific embodiment stated, the above mentioned embodiment is only schematical, be not it is restrictive, this field it is common
Technical staff under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, may be used also
By make it is many in the form of, within these are all belonged to the scope of protection of the present invention.
Claims (10)
1. a kind of for conducting cooling superconducting switch, which is characterized in that including switch skeleton (1) and be wound on the switch bone
Switch superconducting coil (2), switch conduction cooling coil (3), switch heating coil (4) on frame (1)；The switch superconducting coil (2)
Coiling is spaced with the switch conduction cooling coil (3) and is equipped with three layers altogether, the whole story both ends extraction copper of switch superconducting coil (2)
Cable (10) is used as resistance detection line, meanwhile, the whole story both ends extracted current lead (21) of switch superconducting coil (2), institute
The copper cable (10) for stating current feed (21) and described switch superconducting coil (2) whole story both ends forms Four long-base method measure of resistance electricity
Road judges whether entrance is quenched or non-quenched superconducting switch (11) by way of detecting switch superconducting coil (2) resistance
State；The whole story both ends of switch conduction cooling coil (3) and the cold head (22) of superconducting magnet apparatus are thermally connected；The switch
Heating coil (4) is bonded switch superconducting coil (2) coiling, the whole story both ends leading-out copper wire of switch heating coil (4)
Cable (10) heats the switch superconducting coil (2) for galvanization.
2. according to claim 1 a kind of for conducting cooling superconducting switch, which is characterized in that further include encircling most
Copper annular anchor ear (5) outside outer coil, and the flexible copper of the connection switch skeleton (1) connect (6).
3. according to claim 2 a kind of for conducting cooling superconducting switch, which is characterized in that the switch conduction cooling line
The whole story both ends of circle (3) are fixed on the switch skeleton (1), and the flexible copper being connected on the switch skeleton (1) connects
It connects (6) to be connected with the cold head (22) of superconducting magnet apparatus, realization switch conduction cooling coil (3) is cold with superconducting magnet apparatus
The connection of head (22).
4. according to claim 1 a kind of for conducting cooling superconducting switch, which is characterized in that the switch conduction cooling line
The conduction cooling component for enclosing the whole story both ends connection superconducting magnet apparatus of (3), passes through the cold of the conduction cooling component and superconducting magnet apparatus
Head (22) is connected.
5. according to claim 1 or 2 a kind of for conducting cooling superconducting switch, which is characterized in that the switch bone
The both ends of the surface of frame (1) are provided at least two inlet-outlet line gaps (8) and several threaded holes (9), setting in the threaded hole (9)
There are wire column (7)；The switch superconducting coil (2) and switch heating coil (4) double-end copper cable (10) are each attached to
On the wire column (7).
6. according to claim 5 a kind of for conducting cooling superconducting switch, which is characterized in that the switch superconducting line
Circle (2) and switch heating coil (4) are all made of noninductive manner of double wrap and are wound on the switch skeleton (1), the switch superconduction
It is hung in the inlet-outlet line gap (8) of the switch skeleton (1) at the folding of coil (2) and switch heating coil (4).
7. a kind of conduction cooling superconducting magnet device, which is characterized in that opened including superconduction as claimed in any one of claims 1 to 6
Close (11), main superconducting coil (12), vacuum tank (17), radiation protective layer (16), cold head (22), magnet charge-discharge circuit (13),
Heating power supply (18), resistance/pressure measuring instrument (23), conduction cooling component；The radiation protective layer (16) is arranged in the vacuum tank
(17) in, and it is connected with the level-one flange (14) of the cold head (22)；The main superconducting coil (12) and superconducting switch (11)
In the vacuum tank (17), the magnet charge-discharge circuit (13), heating power supply (18), resistance/pressure measuring instrument
(23) it is located at the vacuum tank (17) outside；The switch superconducting coil of the main superconducting coil (12) and the superconducting switch (11)
(2) it is electrically connected, the current feed (21) at described switch superconducting coil (2) whole story both ends connects the magnet charge-discharge circuit
(13)；The double-end copper cable of the whole story (10) of the main superconducting coil (12), switch superconducting coil (2) whole story both ends
Copper cable (10) and be located at the copper cable (10) drawn on the current feed (21) of described switch superconducting coil (2) two sides and connect
Connect the resistance/pressure measuring instrument (23)；The copper cable at switch heating coil (4) whole story both ends of the superconducting switch (11)
(10) heating power supply (18) is connected；The main superconducting coil (12), current feed (21) and superconducting switch (11) switch
Conduction cooling coil (3) is thermally connected with the second level flange (15) of the cold head (22).
8. a kind of conduction cooling superconducting magnet device according to claim 7, which is characterized in that the magnet charge and discharge electricity
Road (13) by charge power supply (19) and let out can multicell (20) form, it is described let out energy multicell (20) by two pole of at least two
Pipe reverse parallel connection forms.
9. a kind of conduction cooling superconducting magnet device according to claim 7, which is characterized in that the main superconducting coil
(12) it is connected in series by several subcoils, the equal leading-out copper wire cable (10) in the both ends of each subcoil, adjacent copper cable
(10) it is connected between and lets out energy multicell (20)；The copper cable (10) at each subcoil both ends be all connected with the resistance/
Pressure measuring instrument (23).
10. a kind of conduction cooling superconducting magnet device according to claim 7, which is characterized in that the main superconducting coil
(12) it is connected by the conduction cooling component with the second level flange (15) of the cold head (22) with current feed (21), the superconduction
Switch (11) switch conduction cooling coil (3) pass through the superconducting switch (11) switch skeleton (1) on flexible copper connect (6) or
The conduction cooling component is connected with the second level flange (15) of the cold head (22).
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| CN201910157694.2A CN110071713B (en) | 2019-03-01 | 2019-03-01 | Superconducting switch for conduction cooling and superconducting magnet device thereof |
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| CN201910157694.2A CN110071713B (en) | 2019-03-01 | 2019-03-01 | Superconducting switch for conduction cooling and superconducting magnet device thereof |
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| CN110071713B CN110071713B (en) | 2020-12-18 |
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| CN110571011A (en) * | 2019-08-07 | 2019-12-13 | 上海联影医疗科技有限公司 | superconducting magnet system and quench control method for magnetic resonance equipment |
| CN111863287A (en) * | 2020-07-23 | 2020-10-30 | 中国科学院合肥物质科学研究院 | Large superconducting magnet mechanically operated superconducting switch |
| WO2021028277A1 (en) * | 2019-08-13 | 2021-02-18 | Koninklijke Philips N.V. | Superconducting switch state detection for superconducting magnet control |
| CN113130162A (en) * | 2021-04-22 | 2021-07-16 | 华北电力大学 | Excitation method for bit-like high-temperature superconducting magnet controlled by thermal switch |
| GB2592264A (en) * | 2020-02-24 | 2021-08-25 | Siemens Healthcare Ltd | Method for detecting closure of a superconducting switch |
| CN113993236A (en) * | 2021-12-24 | 2022-01-28 | 国核铀业发展有限责任公司 | Liquid helium-free superconducting induction heating device |
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| CN113130162A (en) * | 2021-04-22 | 2021-07-16 | 华北电力大学 | Excitation method for bit-like high-temperature superconducting magnet controlled by thermal switch |
| CN113993236A (en) * | 2021-12-24 | 2022-01-28 | 国核铀业发展有限责任公司 | Liquid helium-free superconducting induction heating device |
| CN114613568A (en) * | 2022-03-23 | 2022-06-10 | 华中科技大学 | Superconducting magnet device |
| CN114909818A (en) * | 2022-07-18 | 2022-08-16 | 南方科技大学 | Tin separating and combining device for nuclear heat insulation demagnetization refrigeration system |
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