CN202993652U - Refrigerating system of superconducting motor based on conduction cooling - Google Patents
Refrigerating system of superconducting motor based on conduction cooling Download PDFInfo
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- CN202993652U CN202993652U CN 201220507833 CN201220507833U CN202993652U CN 202993652 U CN202993652 U CN 202993652U CN 201220507833 CN201220507833 CN 201220507833 CN 201220507833 U CN201220507833 U CN 201220507833U CN 202993652 U CN202993652 U CN 202993652U
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- 238000001816 cooling Methods 0.000 title claims abstract description 63
- 238000007789 sealing Methods 0.000 claims abstract description 46
- 238000005057 refrigeration Methods 0.000 claims description 84
- 230000005855 radiation Effects 0.000 claims description 69
- 230000001681 protective effect Effects 0.000 claims description 57
- 239000000463 material Substances 0.000 claims description 18
- 238000010276 construction Methods 0.000 claims description 15
- 239000004593 Epoxy Substances 0.000 claims description 5
- 239000011152 fibreglass Substances 0.000 claims description 5
- 210000002421 cell wall Anatomy 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 239000002826 coolant Substances 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 2
- 239000001307 helium Substances 0.000 description 21
- 229910052734 helium Inorganic materials 0.000 description 21
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 21
- 239000007788 liquid Substances 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 229910052754 neon Inorganic materials 0.000 description 4
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000002887 superconductor Substances 0.000 description 4
- 206010020843 Hyperthermia Diseases 0.000 description 2
- 241001124569 Lycaenidae Species 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 235000014987 copper Nutrition 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000036031 hyperthermia Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
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- Superconductive Dynamoelectric Machines (AREA)
Abstract
The utility model relates to a refrigerating system of a superconducting motor based on conduction cooling. The refrigerating system comprises a compressor, a refrigerator cold head, a sealing device, a vacuum cover, a magnet framework, a cold conduction belt and a radiation-proof screen, wherein the radiation-proof screen is fixedly installed on the inner wall of the vacuum cover through a supporting structure, the compressor is connected with the refrigerator cold head through the sealing device, the refrigerator cold head sequentially penetrates through the vacuum cover and the radiation-proof screen to be fixedly installed on the vacuum cover, and the refrigerator cold head, the vacuum cover and the radiation-proof screen synchronously rotate. The magnet framework used for installation of a superconducting magnet is arranged in the radiation-proof screen. Two ends of the magnet framework penetrate through the radiation-proof screen through a moment pipe to be connected with two ends of the vacuum cover. The inner wall of the magnet framework is connected with the cold conduction belt which is connected with the refrigerator cold head located in the radiation-proof screen. According to the refrigerating system, an efficient cold conduction belt conduction cooling magnet is adopted, a cooling medium used in a traditional cooling scheme is eliminated, utilization of the system is flexible, reliability is high, and the failure rate of the system is effectively reduced.
Description
Technical field
The utility model relates to the Refrigeration Technique of superconducting motor, is specifically related to a kind of refrigeration system based on the cooling superconducting motor of conduction.
Background technology
Superconductor technology shows irreplaceable advantage in the electric power application facet gradually as a kind of emerging technology.The blower fan that utilizes superconductor technology to make, its rotor is by the coiling of high-temperature superconductor (HTS) wire rod, and relatively conventional its current carrying density of copper cash can improve 150 times of left and right, makes superconducting motor have high energy density.This has reduced the volume of motor on the one hand greatly, because superconducting coil can produce extremely strong magnetic field, the iron core in motor can save simultaneously, and the weight of motor also alleviates a lot.Estimate according to American Superconductor Corp., the weight of the superconduction direct-drive aerogenerator of 10MW is 140 t only, and so light weight, will become the key that breaks through blower fan capacity-enlargement technology bottleneck.In addition, because superconducting coil can produce high magnetic field, thereby produce larger moment, do not need to be equipped with the cost costliness, heavy gear-box relatively, this has just improved efficient and the stability of motor greatly.Like this, the cost of transportation of superconduction offshore wind generating, installation cost and maintenance cost all will significantly reduce.
But because superconductivity can only can realize under certain low temperature, so refrigeration system as the crucial accessory system of superconducting motor, for the stable operation of whole motor, has vital effect.
Traditional superconducting motor is because rotating speed is higher, thereby generally adopt refrigerant as cooling medium, centrifugal force when utilizing electric machine rotation flows cooling medium in the cooling medium runner of superconducting magnet inside, by the heat transfer of medium, realize the purpose of cooling system.Yet the use of cooling medium will inevitably increase the complexity of system, reduces its reliability.On the other hand, the centrifugal force when utilizing the motor rotation due to needs just can make cooling medium better be dispersed in internal rotor, thereby reach the purpose of even cooling superconducting magnets.But for, the superconducting motor in the offshore type superconductive blower fan because its rated speed is very low, generally is no more than 20 rpms, thereby the centrifugal force under this rotating speed is not enough to drive cryogenic liquid and evenly distributes at internal rotor, thereby the limitation of being used.
The conduction cooling technology is the solid material that utilizes high thermal conductance, realizes the transmission of cold by solid conduction, thereby realizes the refrigerating function to magnet.Utilize the mode of solid conduction, can avoid using in the middle of system liquid nitrogen, the cooling mediums such as liquid helium, thus greatly reduce requirement to system sealing, can improve the reliability of whole system.For example, open day is 2011-11-30, and publication number is the Chinese patent literature of CN 102262952, discloses a kind of conduction cooling superconducting magnet device, and it comprises the superconducting coil that is housed in vacuum tank, protective shield of radiation, the accessories such as refrigeration machine.Use this scheme can utilize cooling tubing to make superconducting coil, the parts such as protective shield of radiation obtain fully cooling, and can effectively shorten the cool time at initial stage of system.But the use of the refrigeration machines such as liquid helium greatly reduces Security of the system and reliability, and the user that must rely on cold-producing medium of system can work on the other hand, the adaptability of the system that this also reduces.If simple use conduction is cooling as cooling scheme, can break away from the dependence to cold-producing medium, only needing provides power supply just can realize refrigeration work to compressor and refrigeration machine, thereby reduced the requirement to refrigeration system, particularly for the such work requirements of electric rotating machine, only need to coordinate the rotary sealing appts of normal temperature work just can realize, and utilize liquid helium, the refrigeration system of liquid neon or liquid nitrogen needs to utilize the low-temperature rotary sealing device just can be applied among the equipment of this class of electric rotating machine.
The utility model content
The utility model provides a kind of refrigeration system based on the cooling superconducting motor of conduction, utilizes the cooling method of conduction, the refrigeration machine cold head is connected with superconducting magnet, thereby realizes superconducting magnetic to the purpose of carrying out cooling down; According to the utility model, can avoid using the cold-producing mediums such as helium, neon and nitrogen, improved preferably the reliability and stability of system.
The technical solution of the utility model is as follows:
A kind of refrigeration system based on the cooling superconducting motor of conduction, it is characterized in that: comprise compressor, refrigeration machine cold head, sealing device, vacuum (-tight) housing, magnet skeleton, conduction cooling band and protective shield of radiation, protective shield of radiation is fixedly installed in by supporting construction on the inwall of vacuum (-tight) housing, and vacuum (-tight) housing and protective shield of radiation are closed; Compressor is connected with the refrigeration machine cold head by sealing device, and the refrigeration machine cold head passes vacuum (-tight) housing successively, protective shield of radiation is fixedly mounted on vacuum (-tight) housing, and the refrigeration machine cold head is synchronizeed with vacuum (-tight) housing, protective shield of radiation and rotated; Be provided with in described protective shield of radiation for the magnet skeleton that superconducting magnet is installed, the two ends of magnet skeleton are passed the two ends of protective shield of radiation by torque tubes respectively and are connected on the inwall at two ends of vacuum (-tight) housing; The inwall of described magnet skeleton is connected with N conduction cooling band, and each conduction cooling band all partly is connected with the refrigeration machine cold head that is positioned at protective shield of radiation; Wherein, N is integer, N 〉=1.
Described refrigeration machine cold head comprises one-level cold head and secondary cold head, and one-level cold head and secondary cold head are positioned at vacuum (-tight) housing, are in vacuum environment during work.
The one-level cold head of described refrigeration machine directly is connected with protective shield of radiation, and protective shield of radiation is cooled to a relatively high temperature (as 60-80K), realizes leaking blocking of heat for external radiation.
The secondary cold head of described refrigeration machine is connected with the conduction cooling band, by the cooling magnet skeleton of conduction cooling band and superconducting magnet.
Described superconducting magnet is connected with two superconductive current leads, and two superconductive current leads pass protective shield of radiation along protective shield of radiation outer wall cabling, and extends through the vacuum (-tight) housing outside, is connected with miscellaneous part.Two superconductive current lead structures are identical, are respectively used to input and the output of electric current, and the upper end of superconductive current lead is conventional lead material, and as copper, the lower end is high temperature superconducting materia.Superconductive current lead is because be affixed on the protective shield of radiation cabling, so be also cooling through the one-level cold head.
Described magnet skeleton is provided for installing the groove of superconducting magnet, and a plurality of close contacts of groove and superconducting magnet are passed to the refrigeration machine cold head by the conduction cooling band with heat.The parts such as the superconducting magnet of superconducting motor and magnet skeleton, be sealed and be installed in protective shield of radiation, the heat of superconducting magnet passes to the secondary cold head of refrigeration machine by the conduction cooling band, and takes heat to the system outside by refrigeration machine, can reduce to greatest extent external radiation and leak heat.
Described vacuum (-tight) housing is a closed container of being made by metal material (as stainless steel etc.), needs the certain pressure of tolerance and obvious distortion do not occur.
In motor when operation,, certain high vacuum is pumped in vacuum (-tight) housing inside, and the assemblies such as superconducting magnet, magnet skeleton, supporting construction, conduction cooling band, torque tubes, protective shield of radiation all are present in vacuum environment, can reduce like this leakage heat of conducting heat and causing due to gaseous exchange.Remove the gaseous exchange conductive heat leakage, the leakage heat that system mainly exists derives from the solid conduction leakage heat of hyperthermia radiation and support component.
The inwall at described vacuum (-tight) housing two ends is provided with end plate, and described torque tubes is connected on end plate, and the one-level cold head of refrigeration machine and secondary cold head all pass end plate and be positioned at vacuum (-tight) housing inside.
Described protective shield of radiation is installed by supporting construction on the inwall that hangs on vacuum (-tight) housing, is used for reducing external radiation heat is leaked in the radiation of magnet; Described protective shield of radiation adopts high thermal conductivity material (as materials such as red coppers) to make.
Described supporting construction is made by the material of lower thermal conductivity, as the G10 fiber glass epoxy, and its length need to guarantee effectively to stop outside heat conduction to enter protective shield of radiation, makes protective shield of radiation remain on a lower temperature, thereby guarantees that superconducting magnet is in the middle of a lower radiation environment.
Two sections of described conduction cooling band are provided with installing hole, can adopt bolt directly to install, and can conveniently be connected with superconducting magnet, refrigeration machine cold head; Described conduction cooling band adopts the good material of heat conductivility, for example high purity copper, rafifinal or the good material of other heat conductivility.
Described torque tubes can adopt fiber glass epoxy to make; This kind material possesses certain intensity, and thermal conductivity is lower, can effectively reduce external environment for the conductive heat leakage of superconducting magnet itself.
Due to the refrigeration machine cold head along with rotor body is rotated, therefore sealing device is designed to rotary sealing appts, by rotary sealing appts, the refrigeration machine cold head is connected with compressor, this rotary sealing appts can tolerate enough high pressure, but only need satisfy the normal temperature requirement.
Described rotary sealing appts comprises rotating to be held and stationary end, rotates end and is embedded in the groove of stationary end, is provided with the hermetically-sealed construction of movable sealing between the outer wall of rotation end and the cell wall of stationary end; The sealing structure can be magnet fluid sealing, can be also mechanical dynamic seal, or other multiple encapsulation scheme.Described stationary end is provided with the escape pipe and the air inlet pipe that is connected the refrigeration machine cold head that connects the refrigeration machine cold head; Described rotation end is provided with the air inlet pipe and the escape pipe that is connected compressor that connects compressor.
The course of work of the present utility model is as follows:
compressor adopts helium compressor, this compressor produces the normal temperature high voltage helium, be connected to the air inlet of the stationary end of rotary sealing appts by connecting line, high-pressure helium is sent by the gas outlet of rotating end after by rotary sealing appts, and towards the refrigeration head that rotates, the refrigeration machine cold head utilizes high-pressure helium to carry out refrigeration work, and refrigeratory capacity descends the temperature of one-level cold head and secondary cold head, the helium that returns enters again the rotation end air inlet of rotary sealing appts, and get back to helium compressor circulation compression from the stationary end gas outlet of rotary sealing appts through connecting line, refrigeration machine one-level cold head is connected with protective shield of radiation, and protective shield of radiation is cooled to relatively low temperature as (60-80K), and on the other hand, it also is used for cooling superconductive current lead, the secondary cold head of refrigeration machine is connected with the magnet skeleton by N root conduction cooling band, and cooling magnet skeleton, superconducting magnet is close in the groove of magnet skeleton, and together obtains cooling with the magnet skeleton.
The beneficial effects of the utility model are as follows:
The method that the utility model utilization conduction is cooling is connected the refrigeration machine cold head with superconducting magnet, thereby realizes superconducting magnetic to the purpose of carrying out cooling down;
The utility model can be avoided using the cold-producing mediums such as liquid helium, liquid neon and liquid nitrogen, has improved preferably the reliability and stability of system;
Owing to having avoided the low-temperature refrigerants such as use liquid helium, liquid neon and liquid nitrogen, thereby reduce the requirement of system for rotary sealing appts, used normal temperature high voltage rotatory sealing technology just can realize the rotatory sealing connection of helium.And if adopt other solutions for refrigeration, probably need the rotary sealing appts of low temperature, and this will bring great technical barrier;
The utility model is applicable to offshore type superconductive wind driven generator.
Description of drawings
Fig. 1 is overall structure schematic diagram of the present utility model
Fig. 2 is conduction cooling band structure schematic diagram of the present utility model
Fig. 3 is the structural representation of rotary sealing appts of the present utility model
Wherein, Reference numeral is: 1 compressor, 2 helium tubes, 3 sealing devices, 4 refrigeration machine cold heads, 5 torque tubes, 6 vacuum (-tight) housings, 7 protective shield of radiations, 8 superconducting magnets, 9 conduction cooling bands, 10 supporting constructions, 11 one-level cold heads, 12 secondary cold heads, 13, the superconductive current lead inlet wire, 14 magnet skeletons, 15 superconductive current lead outlets, 16 end plates, 17 connect the air inlet pipe of compressor, 18 stationary end, 19 hermetically-sealed constructions, 20 rotate end, and 21 connect the escape pipe of refrigeration machine cold head, 22 connect the air inlet pipe of refrigeration machine cold head, and 23 connect the escape pipe of compressor.
The specific embodiment
As shown in Figure 1, a kind of refrigeration system based on the cooling superconducting motor of conduction, comprise compressor 1, refrigeration machine cold head 4, sealing device 3, vacuum (-tight) housing 6, magnet skeleton 14, conduction cooling band 9 and protective shield of radiation 7, protective shield of radiation 7 is fixedly installed in by supporting construction 10 on the inwall of vacuum (-tight) housing 6, and vacuum (-tight) housing 6 is closed with protective shield of radiation 7; Compressor 1 is connected with refrigeration machine cold head 4 by sealing device 3, and compressor 1 connects refrigeration machine cold head 4 by helium tube 2; Refrigeration machine cold head 4 passes vacuum (-tight) housing 6 successively, protective shield of radiation 7 is fixedly mounted on vacuum (-tight) housing 6, and refrigeration machine cold head 4 is synchronizeed rotation with vacuum (-tight) housing 6, protective shield of radiation 7; Be provided with in described protective shield of radiation 7 for the magnet skeleton 14 that superconducting magnet 8 is installed, the two ends of magnet skeleton 14 are passed the two ends of protective shield of radiation 7 by torque tubes 5 respectively and are connected on the inwall at two ends of vacuum (-tight) housing 6; The inwall of described magnet skeleton 14 is connected with N conduction cooling band 9, and each conduction cooling band 9 all is connected with refrigeration machine cold head 4 parts that are positioned at protective shield of radiation 7; Wherein, N is integer, N 〉=1.
Described refrigeration machine cold head 4 comprises one-level cold head 11 and secondary cold head 12, and one-level cold head 11 and secondary cold head 12 are positioned at vacuum (-tight) housing 6, are in vacuum environment during work.
The one-level cold head 11 of described refrigeration machine directly is connected with protective shield of radiation 7, and protective shield of radiation 7 is cooled to a relatively high temperature (as 60-80K), realizes leaking blocking of heat for external radiation.
The secondary cold head 12 of described refrigeration machine is connected with conduction cooling band 9, by the cooling magnet skeleton 14 of conduction cooling band 9 and superconducting magnet 8.
Described superconducting magnet 8 is connected with two superconductive current leads, and two superconductive current leads pass protective shield of radiation 7 along protective shield of radiation 7 outer wall cablings, and extends through vacuum (-tight) housing 6 outsides, is connected with miscellaneous part.Two superconductive current lead structures are identical, and one is the superconductive current lead inlet wire 13 for the electric current input, and another root is the superconductive current lead outlet 15 for electric current output.The upper end of superconductive current lead is conventional lead material, and as copper, the lower end is high temperature superconducting materia.Superconductive current lead is because be affixed on protective shield of radiation 7 cablings, so be also cooling through one-level cold head 11.
Described magnet skeleton 14 is provided for installing the groove of superconducting magnet 8, and a plurality of close contacts of groove and superconducting magnet 8 are passed to refrigeration machine cold head 4 by conduction cooling band 9 with heat.The parts such as the superconducting magnet 8 of superconducting motor and magnet skeleton 14, be sealed and be installed in protective shield of radiation 7, the heat of superconducting magnet 8 passes to the secondary cold head 12 of refrigeration machine by conduction cooling band 9, and takes heat to the system outside by refrigeration machine, can reduce to greatest extent external radiation and leak heat.
Described vacuum (-tight) housing 6 is closed containers of being made by metal material (as stainless steel etc.), needs the certain pressure of tolerance and obvious distortion do not occur.
During the motor operation, certain high vacuum is pumped in vacuum (-tight) housing 6 inside, the assemblies such as superconducting magnet 8, magnet skeleton 14, supporting construction 10, conduction cooling band 9, torque tubes 5, protective shield of radiation 7 all are present in vacuum environment, can reduce like this leakage heat of conducting heat and causing due to gaseous exchange.Remove the gaseous exchange conductive heat leakage, the leakage heat that system mainly exists derives from the solid conduction leakage heat of hyperthermia radiation and support component.
The inwall at described vacuum (-tight) housing 6 two ends is provided with end plate 16, and 5 of described torque tubes are connected on end plate 16, and the one-level cold head 11 of refrigeration machine and secondary cold head 12 all pass end plate 16 and be positioned at vacuum (-tight) housing 6 inside.
Described protective shield of radiation 7 is installed by supporting construction 10 and is hung on the inwall of vacuum (-tight) housing 6, is used for reducing external radiation heat is leaked in the radiation of magnet; Described protective shield of radiation 7 adopts high thermal conductivity material (as materials such as red coppers) to make.
Described supporting construction 10 is made by the material of lower thermal conductivity, as the G10 fiber glass epoxy, and its length need to guarantee effectively to stop the outside heat conduction to enter protective shield of radiation 7, make protective shield of radiation 7 remain on a lower temperature, thereby guarantee that superconducting magnet 8 is in the middle of a lower radiation environment.
Two sections of described conduction cooling band 9 are provided with installing hole, can adopt bolt directly to install, and can conveniently be connected with superconducting magnet 8, refrigeration machine cold head 4; Described conduction cooling band 9 adopts the good material of heat conductivility, for example high purity copper, rafifinal or the good material of other heat conductivility.
Described torque tubes 5 can adopt fiber glass epoxy to make; This kind material possesses certain intensity, and thermal conductivity is lower, can effectively reduce external environment for the conductive heat leakage of superconducting magnet 8 own.
Due to refrigeration machine cold head 4 along with rotor body is rotated, therefore sealing device 3 is designed to rotary sealing appts, by rotary sealing appts, refrigeration machine cold head 4 is connected with compressor and connects, this rotary sealing appts can tolerate enough high pressure, but only need satisfy the normal temperature requirement.
Described rotary sealing appts comprises and rotates end 20 and stationary end 18, rotates end 20 and is embedded in the groove of stationary end 18, rotates the hermetically-sealed construction 19 that is provided with movable sealing between the cell wall of the outer wall of end 20 and stationary end 18; Sealing structure 19 can be magnet fluid sealing, can be also mechanical dynamic seal, or other multiple encapsulation scheme.
Described stationary end 18 is provided with the escape pipe 21 and the air inlet pipe 22 that is connected the refrigeration machine cold head that connects the refrigeration machine cold head.
Described rotation end 20 is provided with the air inlet pipe 17 and the escape pipe 23 that is connected compressor that connects compressor.
The course of work of the present utility model is as follows:
compressor 1 adopts helium compressor, this compressor 1 produces the normal temperature high voltage helium, be connected to the air inlet of the stationary end 18 of rotary sealing appts by connecting line, high-pressure helium is sent by the gas outlet of rotating end 20 after by rotary sealing appts, and towards the refrigeration head that rotates, refrigeration machine cold head 4 utilizes high-pressure helium to carry out refrigeration work, and refrigeratory capacity descends the temperature of one-level cold head 11 and secondary cold head 12, the helium that returns enters again rotation end 20 air inlets of rotary sealing appts, and get back to helium compressor 1 circulation compression from stationary end 18 gas outlets of rotary sealing appts through connecting line, refrigeration machine one-level cold head 11 is connected with protective shield of radiation 7, and protective shield of radiation 7 is cooled to relatively low temperature as (60-80K), and on the other hand, it also is used for cooling superconductive current lead, the secondary cold head 12 of refrigeration machine is connected with magnet skeleton 14 by N root conduction cooling band 9, and cooling magnet skeleton 14, superconducting magnet 8 is close in the groove of magnet skeleton 14, and together obtains cooling with magnet skeleton 14.
Claims (8)
1. refrigeration system based on the cooling superconducting motor of conduction, it is characterized in that: comprise compressor (1), refrigeration machine cold head (4), sealing device (3), vacuum (-tight) housing (6), magnet skeleton (14), conduction cooling band (9) and protective shield of radiation (7), protective shield of radiation (7) is fixedly installed on the inwall of vacuum (-tight) housing (6) by supporting construction (10), and vacuum (-tight) housing (6) is closed with protective shield of radiation (7); Compressor (1) is connected with refrigeration machine cold head (4) by sealing device (3), refrigeration machine cold head (4) passes vacuum (-tight) housing (6) successively, protective shield of radiation (7) is fixedly mounted on vacuum (-tight) housing (6), and refrigeration machine cold head (4) is synchronizeed rotation with vacuum (-tight) housing (6), protective shield of radiation (7); Be provided with in described protective shield of radiation (7) for the magnet skeleton (14) that superconducting magnet (8) is installed, the two ends of magnet skeleton (14) are passed the two ends of protective shield of radiation (7) by torque tubes (5) respectively and are connected on the inwall at two ends of vacuum (-tight) housing (6); The inwall of described magnet skeleton (14) is connected with N conduction cooling band (9), and each conduction cooling band (9) all is connected with refrigeration machine cold head (4) part that is positioned at protective shield of radiation (7); Wherein, N is integer, N 〉=1.
2. the refrigeration system of superconducting motor according to claim 1, it is characterized in that: described refrigeration machine cold head (4) comprises one-level cold head (11) and secondary cold head (12); The one-level cold head (11) of refrigeration machine directly is connected with protective shield of radiation (7); The secondary cold head (12) of refrigeration machine is connected with conduction cooling band (9).
3. the refrigeration system of superconducting motor according to claim 1, it is characterized in that: described superconducting magnet (8) is connected with two superconductive current leads, two superconductive current leads pass protective shield of radiation (7) along protective shield of radiation (7) outer wall cabling, and extend through vacuum (-tight) housing (6) outside; Two superconductive current lead structures are identical; The upper end of superconductive current lead is conventional lead material, and the lower end is high temperature superconducting materia.
4. the refrigeration system of according to claim 1 or 3 described superconducting motors, it is characterized in that: described magnet skeleton (14) is provided for installing the groove of superconducting magnet (8), groove and superconducting magnet (8) close contact.
5. superconducting motor refrigeration system according to claim 1, it is characterized in that: described vacuum (-tight) housing (6) is a closed container of being made by metal material.
6. the refrigeration system of superconducting motor according to claim 5, it is characterized in that: the inwall at described vacuum (-tight) housing (6) two ends is provided with end plate (16), described torque tubes (5) is connected on end plate (16), and one-level cold head (11) and secondary cold head (12) all pass end plate (16) and be positioned at vacuum (-tight) housing (6) inside.
7. the refrigeration system of superconducting motor according to claim 1 is characterized in that: described protective shield of radiation (7) adopts high thermal conductivity material to make; Described supporting construction (10) is made by the material of lower thermal conductivity; Two sections of described conduction cooling band (9) are provided with installing hole, are connected with magnet skeleton (14), refrigeration machine cold head (4) by bolt; Described conduction cooling band (9) adopts the good material of heat conductivility; Described torque tubes (5) adopts fiber glass epoxy to make.
8. the refrigeration system of superconducting motor according to claim 1, it is characterized in that: described sealing device (3) is designed to rotary sealing appts, by rotary sealing appts, refrigeration machine cold head (4) is connected 1 with compressor) connect; Described rotary sealing appts comprises rotating holds (20) and stationary end (18), rotates end (20) and is embedded in the groove of stationary end (18), is provided with the hermetically-sealed construction (19) of movable sealing between the outer wall of rotation end (20) and the cell wall of stationary end (18); Described stationary end (18) is provided with the escape pipe (21) and the air inlet pipe that is connected the refrigeration machine cold head (22) that connects the refrigeration machine cold head; Described rotation end (20) is provided with the air inlet pipe (17) and the escape pipe that is connected compressor (23) that connects compressor.
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| CN 201220507833 CN202993652U (en) | 2012-09-29 | 2012-09-29 | Refrigerating system of superconducting motor based on conduction cooling |
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| CN 201220507833 CN202993652U (en) | 2012-09-29 | 2012-09-29 | Refrigerating system of superconducting motor based on conduction cooling |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840708A (en) * | 2012-09-29 | 2012-12-26 | 中国东方电气集团有限公司 | Conduction cooling-based refrigerating system for superconducting motor |
| CN103501104A (en) * | 2013-10-22 | 2014-01-08 | 中国船舶重工集团公司第七一二研究所 | Superconductive motor |
| CN107817067A (en) * | 2017-12-07 | 2018-03-20 | 中国工程物理研究院核物理与化学研究所 | A kind of large cavity high/low temperature loading device for neutron stress measurement |
| CN109148679A (en) * | 2018-08-23 | 2019-01-04 | 北京无线电计量测试研究所 | A kind of quantum superconduction chip is thermally connected part and production method |
| CN114284027A (en) * | 2021-12-27 | 2022-04-05 | 中国科学院电工研究所 | Portable conduction-cooled high-temperature superconducting magnet |
| CN117747198A (en) * | 2023-12-01 | 2024-03-22 | 东北大学 | Superconducting current lead cooling device and cooling system |
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2012
- 2012-09-29 CN CN 201220507833 patent/CN202993652U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840708A (en) * | 2012-09-29 | 2012-12-26 | 中国东方电气集团有限公司 | Conduction cooling-based refrigerating system for superconducting motor |
| CN102840708B (en) * | 2012-09-29 | 2016-04-06 | 中国东方电气集团有限公司 | A kind of refrigeration system of the superconducting motor based on Conduction cooled |
| CN103501104A (en) * | 2013-10-22 | 2014-01-08 | 中国船舶重工集团公司第七一二研究所 | Superconductive motor |
| CN103501104B (en) * | 2013-10-22 | 2016-11-23 | 中国船舶重工集团公司第七一二研究所 | A kind of superconducting motor |
| CN107817067A (en) * | 2017-12-07 | 2018-03-20 | 中国工程物理研究院核物理与化学研究所 | A kind of large cavity high/low temperature loading device for neutron stress measurement |
| CN107817067B (en) * | 2017-12-07 | 2023-10-20 | 中国工程物理研究院核物理与化学研究所 | Large-cavity high-low temperature loading device for neutron stress measurement |
| CN109148679A (en) * | 2018-08-23 | 2019-01-04 | 北京无线电计量测试研究所 | A kind of quantum superconduction chip is thermally connected part and production method |
| CN114284027A (en) * | 2021-12-27 | 2022-04-05 | 中国科学院电工研究所 | Portable conduction-cooled high-temperature superconducting magnet |
| CN114284027B (en) * | 2021-12-27 | 2024-02-02 | 中国科学院电工研究所 | Portable conduction cooling high-temperature superconducting magnet |
| CN117747198A (en) * | 2023-12-01 | 2024-03-22 | 东北大学 | Superconducting current lead cooling device and cooling system |
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