CN108106037A - Superconducting magnet apparatus - Google Patents
Superconducting magnet apparatus Download PDFInfo
- Publication number
- CN108106037A CN108106037A CN201711200772.XA CN201711200772A CN108106037A CN 108106037 A CN108106037 A CN 108106037A CN 201711200772 A CN201711200772 A CN 201711200772A CN 108106037 A CN108106037 A CN 108106037A
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- coil
- refrigeration machine
- vacuum tank
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/006—Supplying energising or de-energising current; Flux pumps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2515—Flow valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/13—Mass flow of refrigerants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Abstract
The superconducting magnet apparatus of the present invention includes：Superconducting coil；Vacuum tank；Refrigeration machine；Flow of operating medium comprising the chiller heat exchange part contacted with the chiller heat and the coil heat exchange department thermally contacted with the superconducting coil, allows the working media of gas phase by the chiller heat exchange part and the sequential flowing of the coil heat exchange department；Coil tortuous flow passage makes position of the working media of the gas phase from the flow of operating medium between the chiller heat exchange part and the coil heat exchange department export to outside the vacuum tank.As a result, when carrying out the maintenance of refrigeration machine, the temperature that can either inhibit superconducting coil rises and the temperature of refrigeration machine can be made to increase.
Description
Technical field
The present invention relates to superconducting magnet apparatus.
Background technology
It has been known that there is following superconducting magnet apparatus in the past：Using refrigeration machine by the working media (helium etc.) of gas phase come cold
But superconducting coil, so as to which the superconducting coil is made to be in superconducting state.For example, Japanese Laid-Open Patent Publication 2015-
A kind of superconducting magnet apparatus is disclosed in No. 12193 (hereinafter referred to as patent documents 1), which includes：Superconducting coil；It accommodates super
The vacuum tank of loop；It is installed on the GM refrigeration machines of vacuum tank；It is arranged on outside vacuum tank and compresses the work of gas phase
The gas circulating compressor of medium (gas)；Allow the first piping of gas circulation.First piping and GM refrigeration machines and superconducting coil
It thermally contacts respectively.
In the superconducting magnet apparatus, the working media of gas phase cycles in the first piping, so that superconducting coil is maintained at
Superconducting state.Specifically, superconducting coil by the working media after cryocooled by being cooled.Cool superconducting coil
Working media afterwards is flowed into the gas circulating compressor being arranged on outside vacuum tank by the first piping.
When the maintenance of refrigeration machine is carried out in the superconducting magnet apparatus recorded in patent document 1, first into enforcement refrigeration machine
The situation for being warming up to the operation of room temperature degree is in the majority.If this is because without aforesaid operations and by refrigeration machine from vacuum tank
When removing, it is likely that the moisture in air is led to problems such as to be set in refrigeration machine.Therefore, the maintenance of refrigeration machine is being carried out
When, it carries out just removing refrigeration machine from vacuum tank after aforesaid operations to carry out the maintenance of the refrigeration machine first.
In addition, when so that the refrigeration machine is heated up in above-mentioned superconducting magnet apparatus, it is contemplated that stopping the state of refrigeration machine
The way of gas circulating compressor is persistently driven down.So do, it can be in the first piping from the past refrigeration of gas circulating compressor
Machine persistently supplies the working media of room temperature degree, therefore, refrigeration machine heating.If however, carrying out the operation, refrigeration machine heated
Working media afterwards will heat superconducting coil, thus the temperature of superconducting coil also rises.If the temperature of superconducting coil rises,
The pre-coo time for then making superconducting coil required until being cooled to the superconducting coil as superconducting state after the maintenance of refrigeration machine becomes
It is long.
The content of the invention
It is an object of the invention to provide a kind of following superconducting magnet apparatus：It, can when carrying out the maintenance of refrigeration machine
The temperature for enough inhibiting superconducting coil rises and the temperature of refrigeration machine can be made to increase.
Superconducting magnet apparatus according to the present invention includes：Superconducting coil；Vacuum tank accommodates the superconducting coil；System
Cold can detachably be installed on the vacuum tank compared with the vacuum tank；Flow of operating medium, comprising with it is described
The chiller heat exchange part of chiller heat contact and the coil heat exchange department that is thermally contacted with the superconducting coil, allow the work of gas phase
Medium is by the chiller heat exchange part and the sequential flowing of the coil heat exchange department；Coil tortuous flow passage makes the gas phase
Working media from the flow of operating medium between the chiller heat exchange part and the coil heat exchange department
Position is exported to outside the vacuum tank.
According to the present invention, when carrying out the maintenance of refrigeration machine, the temperature that can either inhibit superconducting coil rises and can make
The temperature of refrigeration machine rises.
Description of the drawings
Fig. 1 is the simplified cross-sectional view for the superconducting magnet apparatus for representing one embodiment of the present invention.
Fig. 2 is the figure of the flowing of working media when representing the quiet rum of superconducting magnet apparatus shown in FIG. 1.
Fig. 3 is the figure of the flowing of working media when representing the pre- blowdown firing of superconducting magnet apparatus shown in FIG. 1.
The figure of the flowing of working media when Fig. 4 is the refrigeration machine heating operating for representing superconducting magnet apparatus shown in FIG. 1.
Specific embodiment
Hereinafter, the superconducting magnet apparatus of one embodiment of the present invention is illustrated referring to figs. 1 to Fig. 4.
As shown in Figure 1, superconducting magnet apparatus 1 includes：Superconducting coil 10；Radiation shield 12；Vacuum tank 14；Refrigeration machine
20；Flow of operating medium 30；Pump 40；First heat exchanger 41 and second heat exchanger 42；Heat exchanger tortuous flow passage 54；Coil
Tortuous flow passage 56；Switching part 60.
Superconducting coil 10 is coil obtained from the wire rod formed as superconductor (superconducting material) is wound in bobbin.
Radiation shield 12 has the shape for accommodating superconducting coil 10.Radiation shield 12 is formed by aluminium.
Vacuum tank 14 has the shape for accommodating radiation shield 12.Vacuum is retained as in vacuum tank 14.Thereby, it is possible to
Inhibit invasion of the heat in vacuum tank 14.Vacuum tank 14 is formed by stainless steel.
Refrigeration machine 20 cools down superconducting coil 10 by the working media of gas phase.Refrigeration machine 20 has the first refrigerating head
(cooling stage) 21, second refrigerating head 22 and attached portion 23.
First refrigerating head 21 is thermally connected with radiation shield 12.First refrigerating head 21 can reach the first minimum arrival temperature
(40K to 70K degree).
Second refrigerating head 22 is located in radiation shield 12.Second refrigerating head 22 can be reached less than the first minimum arrival temperature
Second it is minimum reach temperature (4K degree).
Attached portion 23 in a state that the first refrigerating head 21 and the second refrigerating head 22 are located in vacuum tank 14 so as to
The vacuum tank 14 is installed in compared with the detachable mode of vacuum tank 14.
Flow of operating medium 30 is the flow path that the working media (helium or hydrogen etc.) of gas phase is allowed to flow.Present embodiment
In, flow of operating medium 30 has the shape that the working media of gas phase is allowed to be cycled in vacuum tank 14 and outside vacuum tank 14
Shape.Flow of operating medium 30 has the first heat exchange department 31, the second heat exchange department 32 and the 3rd heat exchange department 33.First heat exchange
Portion 31 is thermally contacted with the first refrigerating head 21.Second heat exchange department 32 is thermally contacted with the second refrigerating head 22.3rd heat exchange department 33 with
Superconducting coil 10 thermally contacts.That is, " the refrigeration that the first heat exchange department 31 and the second heat exchange department 32 composition are thermally contacted with refrigeration machine 20
Machine heat exchange department ", " the coil heat exchange department " that the 3rd heat exchange department 33 composition is thermally contacted with superconducting coil 10.Present embodiment
In, using working media of the helium as gas phase.
The position being located in flow of operating medium 30 outside vacuum tank 14 is equipped with the helium that will be flowed out to outside vacuum tank 14
Gas is sent to the pump 40 of the first heat exchange department 31 by flow of operating medium 30.It is located at vacuum tank 14 in flow of operating medium 30
The position in outer and pump 40 downstream side is equipped with the first open and close valve V1, first flow sensor F1 and the safety that can adjust aperture
Valve RV.The position of upstream side outer positioned at vacuum tank 14 and pump 40, which is equipped with, in flow of operating medium 30 can adjust aperture
Second open and close valve V2, second flow sensor F2.
First heat exchanger 41 is arranged in radiation shield 12.First heat exchanger 41 makes in the first heat exchange department 31 by first
By 22 helium before cooling of the second refrigerating head and in the 3rd heat exchange department 33 after refrigerating head 21 cools down and in the second heat exchange department 32
It cools the helium after superconducting coil 10 and carries out heat exchange.
Second heat exchanger 42 is arranged in vacuum tank 14 and outside radiation shield 12.Second heat exchanger 42 makes stream
Helium before entering the first heat exchange department 31 by the helium after first heat exchanger 41 with carrying out heat exchange.
In present embodiment, superconducting magnet apparatus 1 has the cooling flowing path 52 for cooling down radiation shield 12.Cooling flowing path
52 are connected to flow of operating medium 30.Specifically, the end of the upstream side of cooling flowing path 52 is connected to flow of operating medium 30
In be located at the first heat exchange department 31 downstream side and the upstream side of first heat exchanger 41 position.The downstream side of cooling flowing path 52
End be connected in flow of operating medium 30 positioned at vacuum tank 14 outside and pump 40 upstream side position.Cooling flowing path
52 have the cooling end 53 thermally contacted with radiation shield 12.Therefore, radiation shield 12 in cooling end 53 based on receiving from helium
Cold energy (cold energy) and be cooled, which is helium receive in the first heat exchange department 31 from the first refrigerating head 21 it is cold
Energy.The cooling flowing path 52 by second heat exchanger 42 inside.Therefore, from vacuum tank 14 it is outer by flow of operating medium 30 and
The helium for flowing to the first heat exchange department 31 is just flowed through the helium gas cooling of cooling flowing path 52 in second heat exchanger 42.It is flowed in cooling
The position being located in road 52 outside vacuum tank 14 is equipped with the 3rd open and close valve V3, the 3rd flow sensor F3 that can adjust aperture.
The flow of the helium flowed as a result, in cooling flowing path 52 is based on first flow sensor F1 to the inspection of the 3rd flow sensor F3
It measured value and is conditioned by adjusting the first open and close valve V1, the second open and close valve V2 and the 3rd respective apertures of open and close valve V3.
Heat exchanger tortuous flow passage 54 is the flow path being utilized in the precooling of superconducting coil 10.The heat exchanger detour stream
Road 54 is the flow path made by the helium after the 3rd heat exchange department 33 around over-heat-exchanger 41,42.Specifically, heat exchanger is circuitous
Reflux road 54 is the portion for making helium from flow of operating medium 30 between the 3rd heat exchange department 33 and first heat exchanger 41
Position exports to the flow path outside vacuum tank 14.The end of the upstream side of heat exchanger tortuous flow passage 54 is connected to flow of operating medium
Positioned at the downstream side of the 3rd heat exchange department 33 and the position of the upstream side of first heat exchanger 41 in 30.Heat exchanger tortuous flow passage
The end in 54 downstream side is connected in flow of operating medium 30 positioned at the outside of vacuum tank 14 and pumps the portion of 40 upstream side
Position.Heat exchanger tortuous flow passage 54 has in the outer heating part 55 heated to helium of vacuum tank 14.It is circuitous in heat exchanger
It is located at outside the vacuum tank 14 and position in the downstream side of heating part 55 in reflux road 54 and is equipped with the 4th opening and closing that can adjust aperture
Valve V4, the 4th flow sensor F4.
Coil tortuous flow passage 56 is to carry out the flow path being utilized during the maintenance of refrigeration machine 20.The coil tortuous flow passage 56 is to make
The flow path of the 3rd heat exchange department 33 is bypassed by the helium after the second heat exchange department 32.Specifically, coil tortuous flow passage 56 is
Position of the helium from flow of operating medium 30 between the second heat exchange department 32 and the 3rd heat exchange department 33 is made to export to very
Flow path outside empty container 14.The end of the upstream side of coil tortuous flow passage 56, which is connected in flow of operating medium 30, is located at the second heat
Position between 32 and the 3rd heat exchange department 33 of exchange part.The end in the downstream side of coil tortuous flow passage 56 is connected to working media
Positioned at the outside of vacuum tank 14 and the position of the upstream side of pump 40 in flow path 30.Coil tortuous flow passage 56 has in vacuum tank
The 14 outer heating parts 57 heated to helium.It is located in coil tortuous flow passage 56 outside vacuum tank 14 and under heating part 57
The position of trip side is equipped with the 5th open and close valve V5, the 5th flow sensor F5 that can adjust aperture.
Running when herein, to the quiet rum of superconducting magnet apparatus 1 stated above illustrates.In quiet rum
Under, the first open and close valve V1, the second open and close valve V2 and the 3rd open and close valve V3 are opened, the 4th open and close valve V4 and the 5th open and close valve V5 quilts
It closes, superconducting coil 10 is energized, and refrigeration machine 20 and pump 40 are driven.Under the quiet rum, as shown in Fig. 2, from pumping 40 rows
A part for the helium gone out cycles in flow of operating medium 30, and the rest part of the helium from 40 discharge of pump is flowed via cooling
Road 52 and cycled in flow of operating medium 30.That is, a part for described helium is by second heat exchanger 42, the first heat exchange department
31st, first heat exchanger 41, the second heat exchange department 32, the 3rd heat exchange department 33, first heat exchanger 41 and second heat exchanger
42 this order and flow wherein, the rest part of the helium is by second heat exchanger 42, the first heat exchange department 31, cooling
This order of portion 53 and second heat exchanger 42 and flow wherein.
A part for the helium in the first heat exchange department 31 after the first refrigerating head 21 receives cold energy, in the second heat exchange
Portion 32 further receives cold energy from the second refrigerating head 22, and assigns the cold energy received to superconducting line in the 3rd heat exchange department 33
Circle 10.Superconducting coil 10 is cooled as a result,.In this way, superconducting coil 10 is maintained at superconducting state.Pass through the 3rd heat exchange department 33
Helium afterwards is flowed to the helium heating of the 3rd heat exchange department 33 in first heat exchanger 41 and second heat exchanger 42.As a result,
Become can to allow temperature that pump 40 is steadily driven (such as room temperature by the temperature of the helium after second heat exchanger 42
Degree).The driving of pump 40 is stablized as a result,.
The rest part of the helium in the first heat exchange department 31 after the first refrigerating head 21 receives cold energy, in cooling end 53
Assign the cold energy to radiation shield 12.Radiation shield 12 is cooled as a result,.Therefore, with radiation shield 12 only by the first refrigerating head
The situation of 21 coolings is compared, and can more effectively cool down radiation shield 12.By the helium after cooling end 53 in the second heat exchange
Device 42 is flowed to the helium heating of the first heat exchange department 31.It is become as a result, by the temperature of the helium after second heat exchanger 42
For the temperature (such as room temperature degree) that pump 40 can be allowed steadily to be driven.
Under the quiet rum, as described above, the flow of the helium flowed in cooling flowing path 52 is passed based on first flow
It the detected value of sensor F1 to the 3rd flow sensor F3 and is opened by adjusting the first open and close valve V1, the second open and close valve V2 and the 3rd
The respective apertures of valve closing V3 and be conditioned.
In the following, illustrate switching part 60.Switching part 60 carries out following operation：Operating is made to be switched to stable state fortune from pre- blowdown firing
The operation turned；Operating is made to be switched to the operation of refrigeration machine heating operating from quiet rum.Pre- blowdown firing is to make superconducting coil
10 become superconducting state and the operating of the superconducting coil 10 are begun to cool down from such as room temperature.Refrigeration machine heating operating is to refrigeration machine
20 make the operating that refrigeration machine 20 heats up when being safeguarded.
First, pre- blowdown firing is illustrated.Under pre- blowdown firing, the first open and close valve V1, the 3rd open and close valve V3 and the 4th open and close valve
V4 is opened, and the second open and close valve V2 and the 5th open and close valve V5 are closed, and refrigeration machine 20 and pump 40 are driven.In the pre- blowdown firing
Under, as shown in figure 3, from a part for 40 helium discharged is pumped via heat exchanger tortuous flow passage 54 and in flow of operating medium 30
In cycling, and the rest part of helium from 40 discharge of pump is cycled via cooling flowing path 52 in flow of operating medium 30.That is,
A part for the helium is by second heat exchanger 42, the first heat exchange department 31, first heat exchanger 41, the second heat exchange department
32nd, this order of the 3rd heat exchange department 33 and heating part 55 and flow wherein, the rest part of the helium is handed over by the second heat
Parallel operation 42, the first heat exchange department 31, cooling end 53 and second heat exchanger 42 this order and flow wherein.
A part for the helium in the first heat exchange department 31 after the first refrigerating head 21 receives cold energy, in the second heat exchange
Portion 32 further receives cold energy from the second refrigerating head 22, and assigns the cold energy received to superconducting line in the 3rd heat exchange department 33
Circle 10.Superconducting coil 10 is cooled as a result,.Under the pre- blowdown firing, pass through the 3rd heat exchange department unlike quiet rum
Helium after 33 returns to pump via heat exchanger tortuous flow passage 54 around first heat exchanger 41 and second heat exchanger 42
40.Therefore, it is possible to which the helium for flowing to the second heat exchange department 32 from the first heat exchange department 31 is avoided to be led in first heat exchanger 41
Cross the heating of the helium after the 3rd heat exchange department 33.In other words, the cold energy that helium receives from the first refrigerating head 21 can be avoided to assign
Give situation about suffering a loss before superconducting coil 10.Thereby, it is possible to effectively assign the cold energy obtained from each refrigerating head 21,22
Superconducting coil 10, so as to shorten the pre-coo time of superconducting coil 10.
The helium of inflow heat exchanger tortuous flow passage 54 is heated in heating part 55.Pass through the helium behind heating part 55 as a result,
The temperature of gas becomes the temperature that pump 40 can be made steadily to be driven (such as room temperature degree).
Under the pre- blowdown firing, the volume of helium is reduced with the progress of the cooling of superconducting coil 10.Work as working media
When the pressure of flow path 30 is less than threshold value, just helium is added to via supplement flow path 72 from the container 71 that stockpiles for stockpiling helium
Flow of operating medium 30, until the pressure of flow of operating medium 30 reaches more than the threshold value.Flow of operating medium 30
Pressure is measured by being arranged in flow of operating medium 30 pressure sensor 73 at the position for being located at 40 upstream sides of pump.Helium
Container 71 can also stockpiled according to the detected value of pressure sensor 73 to carry out manually to the supplement of flow of operating medium 30
It can also be carried out in the case of being accompanied with pressure regulator by the pressure regulator.
After the completion of pre- blowdown firing, that is, after the temperature of superconducting coil 10 reaches a reference value (critical-temperature), switching part 60 into
Row is switched to quiet rum (after helium is by the 3rd heat exchange department 33, via first heat exchanger 41 and second from pre- blowdown firing
Heat exchanger 42 and back to pump 40 operating) operation.Specifically, after the temperature of superconducting coil 10 reaches a reference value,
Switching part 60 closes the 4th open and close valve V4 and opens the 3rd open and close valve V3, and superconducting coil 10 is energized.Superconducting coil 10
Temperature be measured by being arranged on the temperature sensor 63 of superconducting coil 10.
Then, refrigeration machine heating operating is illustrated.Refrigeration machine heating carries out when operating at the maintenance of refrigeration machine 20.Freezing
Under machine heating operating, the first open and close valve V1 and the 5th open and close valve V5 are opened, the second open and close valve V2, the 3rd open and close valve V3 and the 4th
Open and close valve V4 is closed, and pump 40 is driven, and refrigeration machine 20 is stopped.Under refrigeration machine heating operating, as shown in figure 4, from pump
The helium of 40 discharges is cycled via coil tortuous flow passage 56 in flow of operating medium 30.That is, helium presses second heat exchanger
42nd, the first heat exchange department 31, first heat exchanger 41, the second heat exchange department 32 and heating part 57 this order and flow wherein
It is dynamic.At this point, the helium of the room temperature degree flowed into vacuum tank 14 heats the first refrigerating head 21 in the first heat exchange department 31, it
Afterwards, second refrigerating head 22 is heated in the second heat exchange department 32.Refrigeration machine 20 promptly heats up as a result,.It heats up and transports in refrigeration machine
Under turning, since refrigeration machine 20 stops, passing through temperature the facing higher than superconducting coil 10 of the helium after the second heat exchange department 32
Boundary's temperature, but, the helium are flowed into coil detour stream not via the 3rd heat exchange department 33 thermally contacted with superconducting coil 10
Road 56.Therefore, it is possible to avoid the heating to superconducting coil 10 of the helium after heating refrigeration machine 20.That is, in present embodiment
Refrigeration machine heating operating under, can either inhibit superconducting coil 10 temperature rise again can make refrigeration machine 20 temperature it is rapid on
It rises.
Refrigeration machine heating operating discussed above receives expression in quiet rum based on switching part 60 and freezes
The signal of the maintenance of machine 20 and be started.That is, the second opening and closing is closed when switching part 60 receives the signal in quiet rum
Valve V2 and the 3rd open and close valve V3 and open the 5th open and close valve V5, and stop refrigeration machine 20.The signal for example passes through operation
Switching manipulation etc. that person carries out and be sent to switching part 60.
After based on refrigeration machine heating operating the temperature of each refrigerating head 21,22 being made to become room temperature degree, from vacuum tank 14
In remove refrigeration machine 20, carry out the maintenance of refrigeration machine 20.The temperature of first refrigerating head 21 is by being arranged on the temperature of the first refrigerating head 21
It spends sensor 61 and is measured, the temperature of the second refrigerating head 22 is by being arranged on the temperature sensor 62 of the second refrigerating head 22 and tested
Go out.
During the maintenance of refrigeration machine 20, continue the driving of pump 40.Refrigeration machine 20 is kept in vacuum tank 14 as a result,
Position (cylinder etc.) is constantly heated by helium, so as to inhibit frost attachment on the position etc..In the dimension of refrigeration machine 20
After shield, refrigeration machine 20 is mounted to vacuum tank 14.Then, refrigeration machine 20 is driven, and the 5th open and close valve V5 is closed
It closes, and the second open and close valve V2 and the 3rd open and close valve V3 are opened.Temperature rises naturally during the maintenance of refrigeration machine 20 as a result,
Radiation shield 12 and superconducting coil 10 afterwards is just gradually cooled.Afterwards, superconducting magnet apparatus 1 is restored to quiet rum.
It is believed that embodiment disclosed in this specification in all aspects on only illustrate and be not limit
The embodiment of property processed.The scope of the present invention is not as shown in the explanation of above-mentioned embodiment but by the scope of the content of the invention
It is shown, and it includes all changes in the range of the connotation with the scope equalization shown in the content of the invention and this.
Such as switching part 60 can also be omitted.In this case, in a manual fashion come carry out from pre- blowdown firing toward stable state transport
The switching turned or the switching operated from quiet rum toward refrigeration machine heating.
In addition it is also possible to omit cooling flowing path 52.
In the following, it summarizes to embodiment stated above.
The superconducting magnet apparatus of present embodiment includes：Superconducting coil；Vacuum tank accommodates the superconducting coil；Refrigeration
Machine can detachably be installed on the vacuum tank compared with the vacuum tank；Flow of operating medium, comprising with the system
The chiller heat exchange part of cold thermo-contact and the coil heat exchange department thermally contacted with the superconducting coil, allow the work of gas phase to be situated between
Matter is by the chiller heat exchange part and the sequential flowing of the coil heat exchange department；Coil tortuous flow passage makes the gas phase
Portion of the working media from the flow of operating medium between the chiller heat exchange part and the coil heat exchange department
Position is exported to outside the vacuum tank.
This superconducting magnet apparatus has coil tortuous flow passage, which makes in chiller heat exchange part and refrigeration
The working media (helium etc.) that machine has carried out the gas phase after heat exchange is exported to not via coil heat exchange department outside vacuum tank.
Therefore, in the maintenance of refrigeration machine, by the way that room temperature degree is supplied in flow of operating medium in the state of refrigeration machine is stopped
It working media and is exported to heated the working media after refrigeration machine by coil tortuous flow passage outside vacuum tank, it can
The working media after chiller heat exchange part heated refrigeration machine is avoided also to add in coil heat exchange department to superconducting coil
The situation of heat.The temperature of superconducting coil can either be made to be maintained at low temperature as a result, can make refrigeration machine early heat up again.Therefore,
The time for making superconducting coil required until being cooled to the superconducting coil in advance as superconducting state after the maintenance of refrigeration machine can be shortened.
It it is preferable that, is further included in the case of this：Pump, is arranged on outside the vacuum tank, will flow out to the vacuum
The working media of gas phase outside container gives the chiller heat exchange part by the flow of operating medium.
In this way, since the working media of gas phase is circulated in chiller heat exchange part, coil heat exchange department and pump, accordingly, it is capable to
The amount of working media necessary to enough reduction cooling superconducting coils.
It is preferable that, the end in the downstream side of the coil tortuous flow passage is connected to the working media in the case of this
Have in flow path positioned at the outside of the vacuum tank and the position of the upstream side of the pump, the coil tortuous flow passage described
The outer heating part heated to the working media of vacuum tank.
In such manner, it is possible to make to return to working media stream by the working media that coil tortuous flow passage is flowed out to outside vacuum tank
Road, and the working media is heated by heating part, therefore, it is possible to reduce the load of pump.
In addition, it is preferable that, is further included in above-mentioned superconducting magnet apparatus：Switching part is carried out in the refrigeration machine
The working media of driving and the gas phase is steady by the sequential flowing of the chiller heat exchange part and the coil heat exchange department
Under state operating, when receiving the signal for the maintenance for representing to carry out the refrigeration machine, stop the refrigeration machine and make described steady
State operating is switched to refrigeration machine heating operating, the refrigeration machine heating operating be allow the gas phase working media by the refrigeration machine
The operating of the sequential flowing of heat exchange department and the coil tortuous flow passage.
In this way, for example, by operator send switching part the operation of the signal, just it can cut quiet rum
Change to refrigeration machine heating operating.Thereby, it is possible to easily carry out the maintenance of refrigeration machine.
Claims (4)
1. a kind of superconducting magnet apparatus, it is characterised in that including：
Superconducting coil；
Vacuum tank accommodates the superconducting coil；
Refrigeration machine can detachably be installed on the vacuum tank compared with the vacuum tank；
Flow of operating medium is thermally contacted comprising the chiller heat exchange part contacted with the chiller heat and with the superconducting coil
Coil heat exchange department, allow the working media of gas phase by the chiller heat exchange part and the sequential flow of the coil heat exchange department
It is dynamic；
Coil tortuous flow passage makes the working media of the gas phase be located at the chiller heat from the flow of operating medium and exchanges
Position between portion and the coil heat exchange department is exported to outside the vacuum tank.
2. superconducting magnet apparatus according to claim 1, it is characterised in that further include：
Pump, is arranged on outside the vacuum tank, the working media of the gas phase flowed out to outside the vacuum tank is passed through the work
Make medium flow path and give the chiller heat exchange part.
3. superconducting magnet apparatus according to claim 2, it is characterised in that：
The end in the downstream side of the coil tortuous flow passage is connected in the flow of operating medium positioned at the vacuum tank
Outside and the position of the upstream side of the pump,
The coil tortuous flow passage has the heating part heated outside the vacuum tank to the working media.
4. superconducting magnet apparatus according to any one of claim 1 to 3, it is characterised in that further include：
Switching part carries out the working media of driving and the gas phase by the chiller heat exchange part and institute in the refrigeration machine
Under the quiet rum for stating the sequential flowing of coil heat exchange department, when receiving the signal for the maintenance for representing to carry out the refrigeration machine,
Stop the refrigeration machine and the quiet rum is made to be switched to refrigeration machine heating operating, refrigeration machine heating operating is to allow institute
The working media of gas phase is stated by the operating of the chiller heat exchange part and the sequential flowing of the coil tortuous flow passage.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016227887A JP6626815B2 (en) | 2016-11-24 | 2016-11-24 | Superconducting magnet device |
| JP2016-227887 | 2016-11-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108106037A true CN108106037A (en) | 2018-06-01 |
| CN108106037B CN108106037B (en) | 2020-06-30 |
Family
ID=62207770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711200772.XA Expired - Fee Related CN108106037B (en) | 2016-11-24 | 2017-11-24 | Superconducting magnet device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6626815B2 (en) |
| KR (1) | KR101984404B1 (en) |
| CN (1) | CN108106037B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020038440A1 (en) * | 2018-08-22 | 2020-02-27 | 中国科学院合肥物质科学研究院 | Rate-controllable superconducting magnet component temperature cycling test apparatus |
| CN114556498A (en) * | 2019-11-01 | 2022-05-27 | 日本超导体技术公司 | Helium recondensing device for cryostat |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5024197B1 (en) * | 1970-12-02 | 1975-08-13 | ||
| CN1057329A (en) * | 1990-06-08 | 1991-12-25 | 株式会社日立制作所 | The thermostat of band liquefaction refrigerator |
| JPH06323663A (en) * | 1993-05-18 | 1994-11-25 | Hitachi Ltd | Refrigerator |
| JPH08121892A (en) * | 1994-10-26 | 1996-05-17 | Kobe Steel Ltd | Operation controlling method for turbine type expansion unit |
| JPH09306722A (en) * | 1996-05-16 | 1997-11-28 | Toshiba Corp | Superconducting magnet device |
| CN104252942A (en) * | 2013-06-28 | 2014-12-31 | 株式会社东芝 | Superconducting magnet apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007194258A (en) * | 2006-01-17 | 2007-08-02 | Hitachi Ltd | Superconductive magnet apparatus |
| JP6473965B2 (en) * | 2015-02-06 | 2019-02-27 | Smc株式会社 | Coolant supply device with safety mechanism and method for cooling thermal load |
-
2016
- 2016-11-24 JP JP2016227887A patent/JP6626815B2/en not_active Expired - Fee Related
-
2017
- 2017-11-20 KR KR1020170154510A patent/KR101984404B1/en active IP Right Grant
- 2017-11-24 CN CN201711200772.XA patent/CN108106037B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5024197B1 (en) * | 1970-12-02 | 1975-08-13 | ||
| CN1057329A (en) * | 1990-06-08 | 1991-12-25 | 株式会社日立制作所 | The thermostat of band liquefaction refrigerator |
| JPH06323663A (en) * | 1993-05-18 | 1994-11-25 | Hitachi Ltd | Refrigerator |
| JPH08121892A (en) * | 1994-10-26 | 1996-05-17 | Kobe Steel Ltd | Operation controlling method for turbine type expansion unit |
| JPH09306722A (en) * | 1996-05-16 | 1997-11-28 | Toshiba Corp | Superconducting magnet device |
| CN104252942A (en) * | 2013-06-28 | 2014-12-31 | 株式会社东芝 | Superconducting magnet apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020038440A1 (en) * | 2018-08-22 | 2020-02-27 | 中国科学院合肥物质科学研究院 | Rate-controllable superconducting magnet component temperature cycling test apparatus |
| CN114556498A (en) * | 2019-11-01 | 2022-05-27 | 日本超导体技术公司 | Helium recondensing device for cryostat |
| CN114556498B (en) * | 2019-11-01 | 2024-06-07 | 日本超导体技术公司 | Helium recondensing device for cryostat |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101984404B1 (en) | 2019-05-30 |
| JP6626815B2 (en) | 2019-12-25 |
| CN108106037B (en) | 2020-06-30 |
| JP2018085445A (en) | 2018-05-31 |
| KR20180058631A (en) | 2018-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101942526B1 (en) | Refrigerator | |
| CN108106037A (en) | Superconducting magnet apparatus | |
| CN108109806A (en) | Superconducting magnet apparatus | |
| JP3719159B2 (en) | Refrigeration equipment | |
| CN104718382B (en) | The combined box of reservoir and receiving device | |
| JP5677472B2 (en) | Refrigeration equipment | |
| JP6072264B2 (en) | Refrigeration equipment | |
| WO2016170680A1 (en) | Refrigerating and air conditioning device | |
| JP5642138B2 (en) | Refrigeration equipment | |
| EP4145060A1 (en) | Hot gas defrost using medium temperature compressor discharge | |
| JP2010078257A (en) | Refrigerating device | |
| CN211204477U (en) | Magnetic suspension cooling system | |
| US20080115520A1 (en) | Rinsable cold head for a cryo refrigerator using the pulse tube principle | |
| JP2011237127A (en) | Refrigerating device | |
| JP6762624B1 (en) | Heat pump for refrigeration equipment, liquid quick freezing device using this | |
| US11982480B2 (en) | Refrigeration system with emergency cooling using dedicated compressor | |
| US20230070186A1 (en) | Hot gas defrost using dedicated low temperature compressor discharge | |
| US20230408159A1 (en) | Hot gas defrost using medium temperature discharge gas | |
| KR100212664B1 (en) | Quick freezing refrigeration cycle apparatus and control method | |
| KR100568518B1 (en) | Refrigerator | |
| JP3218799B2 (en) | Defrost device for binary refrigeration system | |
| JP5058348B2 (en) | Defrost equipment in carbon dioxide circulation and cooling system | |
| CN117516014A (en) | Refrigerating system, control method and control device thereof and refrigerating equipment | |
| CN117516015A (en) | Refrigerating system, control method and control device thereof and refrigerating equipment | |
| JP2014190545A (en) | Freezer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200630 Termination date: 20211124 |