CN106683819B - Magnet apparatus - Google Patents
Magnet apparatus Download PDFInfo
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- CN106683819B CN106683819B CN201611262089.4A CN201611262089A CN106683819B CN 106683819 B CN106683819 B CN 106683819B CN 201611262089 A CN201611262089 A CN 201611262089A CN 106683819 B CN106683819 B CN 106683819B
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- cavity
- winding bobbin
- cryogenic liquid
- reservoir
- coil
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- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/381—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets
- G01R33/3815—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets with superconducting coils, e.g. power supply therefor
-
- 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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Abstract
The present invention proposes a kind of magnet apparatus, including：Cavity and the bobbin axially extended in the cavity；Several coils being arranged on the bobbin, the coil are sequentially arranged in the axial direction；For accommodating the cavity of cryogenic liquid in cavity, the cavity is by bobbin and is fixed on bobbin and is surrounded on the first shell of the coil outer and forms, and the volume of the cavity is less than the volume of cavity.Technical scheme of the present invention causes coil to be immersed in the smaller inside cavity of volume in whole or in part, this structure is applied in superconduction type magnetic resonance, had not only realized superconducting coil and has largely been immersed in the stable operation for ensureing superconducting coil in cryogenic liquid but also greatly reduces the filling weight volume of cryogenic liquid.
Description
The application be on 09 15th, 2015 submit Patent Office of the People's Republic of China, application No. is 201510587181.7, invention names
The referred to as division of the Chinese patent application of " magnet apparatus ".
Technical field
The present invention relates to medical imaging field more particularly to a kind of magnet apparatus.
Background technology
With flourishing for superconductor technology and superconductor, superconducting magnet technology has very wide application prospect.
Superconducting magnet has many advantages, such as that current density is high, low energy consumption, small, magnetic field intensity is high, is transported in basic scientific research, traffic
The application of defeated, industrial technology and medicine and hygiene fields is more and more extensive.For example, in medicine technology field, by superconducting magnet group
Into superconducting MRI system promptly replace permanent magnet MRI system, have become one of medical imaging devices of mainstream.Its
In, the effect of superconducting magnet is that the main field of stable and uniform is provided for superconducting MRI system.
Due to the limitation of superconductor, the stable operation of current all superconducting magnets all be unable to do without cryogenic conditions.For example, by
The cryogenic magnet that the superconducting wires coilings such as niobium titanium (NbTi), three tin of niobium (Nb3Sn) form, running temperature is generally in 4.2K
Left and right usually provides low temperature environment by liquid helium (LHe)；The operation of magnesium diboride (MgB2) superconducting magnet is generally in 20K or so；
Usually low temperature environment is provided by liquified hydrogen (LH2)；It is other by superconducting lines such as bismuth-strontium-calcium-copper-oxygen (BSCCO), yttrium barium copper oxides (YBCO)
The high-temperature superconducting magnet of material coiling, temperature range of operation is larger, but is generally lower than 80K, usually by liquid nitrogen (LN2), liquid
The cryogenic liquids such as state neon (LNe) provide low temperature environment.The critical current density of different running temperature superconducting magnets is different, operation
Temperature is lower, and critical current density is bigger.Needs are maintained with the superconduction magnetic system of low temperature environment by cryogenic liquid, due to
The consumption of cryogenic liquid, needs to be continuously replenished or regular replenishment cryogenic liquid.So master of this superconducting magnet system operation
It is to maintain the expense (that is, low temperature expense) of low temperature environment to want expense.Meanwhile and this special environmental requirement hinder superconduction
The popularization and application of magnet technology.
In current conventional superconducting MRI system, most of superconducting magnet is NbTi superconducting magnets, this superconducting magnet
(or coil) is usually encapsulated in liquid helium vessel, is all submerged by liquid helium or partially submerged, is ensured superconducting magnet
Stable operation.Liquid helium vessel is mounted on by fixed structure in thermostat.The MRI liquid reservoir volumes of this structure are about 1500
To 2000 liters.The shortcomings that this structure MRI is：Not only helium vessel manufacturing expense is expensive, but also needs the liquid helium amount filled also huge
Greatly, low temperature expense is huge.If directly reducing the liquid helium in liquid helium tank, superconducting magnet can be caused to be largely exposed in helium, transported
The heat that part superconducting line is generated due to stress bending etc. during row cannot be absorbed by liquid helium in time, easily be quenched.It in addition, will
It may be also very inconvenient that the liquid helium of thousands of liters, which transports hospital and MRI is refilled,.It is generally known that with helium resource on the earth
Exhaust, the price of liquid helium rises year by year, this brings extremely heavy financial burden to hospital and patient.
It is therefore desirable to provide a kind of new superconducting magnet system, to solve, current superconducting magnet system liquid helium dosage is big to ask
Topic, while can guarantee the stable operation of superconducting magnet again.
Invention content
To solve the above-mentioned problems, the present invention proposes a kind of magnet apparatus, including：
Cavity and the bobbin axially extended in the cavity；
Several coils being arranged on the bobbin, the coil are sequentially arranged in the axial direction；
For accommodating the cavity of cryogenic liquid in cavity, the cavity is by bobbin and is fixed on bobbin simultaneously
The first shell for being surrounded on the coil outer is formed, and the volume of the cavity is less than the volume of cavity.
Optionally, it further includes：
Second shell, positioned at the outside of the first shell；
The second shell is closed tank, and internal region is the cavity.
According to the another aspect of the application, a kind of magnet apparatus is proposed, including：
The bobbin axially extended；
Several coils being arranged on the bobbin, the coil are sequentially arranged in the axial direction；
The outside of the coil, the bobbin and first shell with the bobbin are fixed and be surrounded on to first shell
Form the cavity for accommodating cryogenic liquid；The section of the cavity is the elongated shape extended in the axial direction.
Optionally,
The bobbin includes inner loop rack, the interior loop being placed on the inner loop rack；The first shell includes lid
Plate, the both sides of the cover board are fixed on bobbin；The cover board, part inner loop rack form to accommodate the first of coolant
Cavity.
Optionally,
The bobbin includes outer loop rack, the exterior loop being placed on the outer loop rack；The first shell includes storage
Storage, the outer loop rack are placed in the reservoir, and the reservoir, part outer loop rack form to accommodate coolant
Second cavity.
Optionally, the reservoir is open rectangle section circular arc type container.
Optionally, the opening angle of the reservoir is 0-180 degree.
Optionally, further include the excessive connector of sealing, the excessive connector of sealing for connect first cavity with it is described
Second cavity.
Optionally, coolant surge tank, the coolant surge tank and the cavity for being used to accommodate coolant are further included
Connection.
Optionally, superconducting switch liquid storage box, the coolant surge tank and the chamber for being used to accommodate coolant are further included
Body is connected by the superconducting switch liquid storage box.
Compared with prior art, technical scheme of the present invention causes coil to be immersed in the smaller chamber of volume in whole or in part
Internal portion, this structure are applied in superconduction type magnetic resonance, have both realized superconducting coil and are largely immersed in cryogenic liquid and have protected
The stable operation of card superconducting coil greatly reduces the filling weight volume of cryogenic liquid again.The cryogenic liquid of usual this structure
Loading can be reduced from 1500L or so to 500L or so.The cost of superconducting magnet is effectively reduced, and can substantially be broken away from pair
The dependence of scarce resource helium.
Description of the drawings
Fig. 1 is a kind of existing axial side view of superconducting magnet；
Fig. 2 is the sectional view in the A-A directions along Fig. 1；
Fig. 3 is the sectional view of MRI superconducting magnet systems structure of the present invention；
Fig. 4 is superconducting magnet structure schematic diagram of the present invention；
Fig. 5 is section lower half portion sectional view of the superconducting magnet system of the present invention along center line；
Fig. 6 is the schematic diagram of the second reservoir of the second low-temperature (low temperature) vessel of superconducting magnet system of the present invention；
Fig. 7 is cryocooled return-flow structure schematic diagram；
Fig. 8 is a partial view of Fig. 6；
Fig. 9 is Former liquid helium conduit cover plate schematic diagrams in superconducting magnet system first embodiment of the present invention；
Figure 10 is anchor ear schematic diagram in superconducting magnet system first embodiment of the present invention.
Specific embodiment
Many details are elaborated in the following description in order to fully understand the present invention.But the present invention can be with
Much implement different from other manner described here, those skilled in the art can be in the situation without prejudice to intension of the present invention
Under do similar popularization, therefore the present invention is not limited to the specific embodiments disclosed below.
Secondly, the present invention is described in detail using schematic diagram, when describing the embodiments of the present invention, for purposes of illustration only, institute
It is example to state schematic diagram, should not limit the scope of protection of the invention herein.
In magnetic resonance imaging (Magnetic Resonance Imaging, abbreviation MRI) equipment, main magnet is one non-
Often important component, its effect are to generate magnetic field.According to the mode that magnetic field generates, main magnet can be divided into permanent magnet and electromagnetism
Body, electromagnet can be divided into resistive magnet and superconducting magnet again.Superconducting magnet is current using a kind of more main magnets.
With reference to shown in Fig. 1 to Fig. 2, a kind of existing superconducting magnet A in a ring, including：Toroidal cryogenic retainer 1, retainer 1
Inner wall 12 and outer wall 13 with relative spacing setting, annular housing 10, the Yi Jiyong being formed between inner wall 12 and outer wall 13
In the exocoel 11 for placing checked object (not shown), closer to exocoel 11, low temperature is accommodated in cavity 10 than outer wall 13 for inner wall 12
Coolant (not shown), the coolant are generally liquid helium.
As shown in Fig. 2, superconducting magnet A further includes the superconducting coil component in cavity 10.The superconducting coil component
Including：The coil rack 2 on inner wall 12 and the superconducting coil on coil rack 23 are fixedly arranged on, superconducting coil 3 is at least
Some is immersed in below the liquid level H of coolant.
Coolant is used to superconducting coil 3 being cooled to 4.2K (Kelvin), so that superconducting coil 3 is in superconducting state.For
The temperature of superconducting coil 3 is set to reach 4.2K, the liquid level H of coolant is generally required (to be protected not less than superconducting magnet A height
The outer diameter of holder) certain proportion (such as 80%).
In order to which the liquid level H for making coolant meets above-mentioned requirements, in existing superconducting magnet A, cavity 10 is located at below liquid level H
In part, filling coolant is both needed in the space that is not occupied by superconducting coil component.The volume in the space is very big, therefore,
Existing superconducting magnet need to expend a large amount of coolant, cause the cost of superconducting magnet and increase.
In order to solve the above technical problem, the present invention provides the superconducting magnet systems for including multiple liquid helium tanks.It please join
Fig. 3 is examined, is the structure diagram of superconducting magnet system of the present invention.The superconducting magnet system 100 includes at least two liquid helium tanks, the
One liquid helium tank 103, volume are about 1500L, and the second liquid helium tank 106, volume is about 100L.First liquid helium tank 103 is arranged on outer true
In cavity (OVS) 101, one or more thermal radiation shields 102 are provided in vacuum space between them.Second liquid helium
Tank 106 is arranged in the first liquid helium tank 103, is connected with the first liquid helium tank 103.Second liquid helium tank 106 passes through bellows 107 and liquid
Helium surge tank 104, superconducting switch liquid storage box 109 are interconnected.Magnet 105 is immersed in the liquid helium 111 in the second liquid helium tank 106
In.Refrigeration machine 116 is located in cavity 115.Refrigeration machine 116 has two-stage, level-one connection thermal radiation shield 102, and this is shielded
The temperature of 50~70k is cooled to, helium 113 is condensed into liquid helium 111, and be back to liquid helium buffering along drainage thread 112 by two level
Tank 104.
It please refers to Fig.4, is the schematic diagram of superconducting magnet structure of the present invention.The superconducting magnet structure 200 includes a magnet
Interior loop winding bobbin 201, magnet exterior loop winding bobbin 202 pass through exterior loop framework supporting structure 204 and interior lines ring framework
201 are fixed into an overall structure.Superconducting coil 203 is disposed in inside and outside winding bobbin.Interior loop winding bobbin 201 and conduit
The first liquid helium reservoir 207 is formed between cover board 205, wherein the liquid helium stored and superconducting coil direct contact heat transfer, ensure that
The stable operation of superconducting magnet.Second liquid helium reservoir, 206 portion envelops exterior loop winding bobbin 202.
Fig. 5 and Fig. 4 are please referred to, is section lower half portion sectional view of the superconducting magnet system of the present invention along center line.One
In a infinite embodiment, the superconducting coil 203 may include two end coil 203a, two middle coil 203b,
Two middle coil 203c, a centering coil 203d, two exterior loop 203e.Winding bobbin 201 and conduit cover board 205a are close
Envelope forms the first accumulator tank 207a；Winding bobbin 201 and conduit cover board 205b seals to form the second accumulator tank 207b；Winding bobbin
201 seal to form third accumulator tank 207c with conduit cover board 205c, and first, second and third accumulator tank 207a, 207b, 207c phase interconnects
It is logical to form the first reservoir 207.First accumulator tank 207a is interconnected by connectivity structure 301a and the second accumulator tank 207b；The
Two accumulator tank 207b are interconnected by connectivity structure 301b and third accumulator tank 207c.First reservoir 207 is connect by connection
The 302, second reservoir 206 of mouth is interconnected by connecting interface 303 with liquid helium surge tank 104 respectively.First reservoir 207 with
Second reservoir 206, which combines, is formed as the second liquid helium tank 106.The superconducting magnet system major part structure is symmetrical, therefore its
His part-structure is identical, repeats no more.
Fig. 6 is please referred to, is the schematic diagram of the second reservoir of the second low-temperature (low temperature) vessel of superconducting magnet system of the present invention.Second storage
Storage 206 is 60 degree or so the arc-shaped containers in open rectangle section, and material is usually stainless steel.Outer skeleton 202a is placed in second
206a in reservoir is fixed with support construction 204 across 206a in the second reservoir by sealing transit joint 402a, sealed
It crosses connector 402 and is generally stainless steel (including 402a, 402b).204 material of support construction is usually aluminium, aluminium alloy or stainless steel
Deng.Sealing transit joint 402a passes through the second reservoir 206a and needs to seal therewith, between sealing means it is generally straight
Connect welded seal.Sealing transit joint 402a is generally bolted or welds with 204 fixed form of support construction.
Referring again to FIGS. 3, superconducting switch 108 is arranged in superconducting switch liquid storage box 109.Liquid storage box 109 is for example by stainless
Non-magnetic material as steel or aluminium is made, and is located at magnet bottom, passes through corrugated stainless steel tubing 107a and the second liquid helium tank 106
Connection, is connected by bellows 107b, 107c with liquid helium surge tank 104.Liquid helium surge tank 104, superconducting switch liquid storage box 109,
Second liquid helium tank 106 connects each other.Such structure ensures that superconducting switch 108 is submerged always by liquid helium when magnet is run.
The superconducting line fixed frame 110 being wrapped in bellows 107b is welded by more piece stainless steel bar, and both ends are solid respectively
Due on superconducting switch liquid storage box 109 and liquid helium surge tank 104, the lead-out wire of superconducting switch is bundled in superconducting coil fixed frame
It on 110, leads in liquid helium surge tank 104, is connect with the superconducting line joint of superconducting coil.Liquid helium surge tank 104 is fixed on outer
It in coil rack support construction 204, is made of stainless steel or aluminium, total measurement (volume) is about 100L, act as supplement lifting field process
In liquid helium consumption in the second liquid helium tank 106.
Fig. 7 and Fig. 1 are please referred to, cavity 115 is connected with the first liquid helium tank 103 by bellows, the cotton thread of ripple pipe end
112 are connected with the fixed block 501 in liquid helium surge tank 104.The liquid helium that refrigeration machine 116 is condensed into is back to liquid helium along cotton thread 112
In surge tank 104, avoid directly dripping.
It is the low-temperature adhesion encapsulating method in the low liquid helium MRI superconducting magnet apparatus manufacturing process of the invention below.
Fig. 8 is please referred to, is a partial view of Fig. 6.In an infinite embodiment, conduit cover board 205A is adopted
The first reservoir 207A is formed with a kind of low-temperature adhesion encapsulating method and the sealing of winding bobbin 201.Further, conduit cover board
205A is provided with a kind of groove bonding structure 601, and can increase bond area raising adhesive strength again can be with partial offset material
The stress that material low-temperature shrink generates bonded adhesives water.Additional fastening structure, such as anchor ear 602 are also needed to outside usual cover board.Conduit
The material of cover board 205A generally selects material identical with winding bobbin 201, for example, aluminium, stainless steel etc..The bonding glue can be with
It is various epoxy glues or itself and other mixtures or other low temperature glue.In another example, conduit cover board 205A
It can directly select and 201 welded seal of winding bobbin.
Fig. 9 is please referred to, is conduit covering plate structure schematic diagram.In an infinite embodiment, the conduit cover board 205
For an opening annulus, annulus opening angle is generally 60 degree or so, and it is close that conduit cover board 205 is provided with the hole 701 that is adhesively fixed, bonding
Seal structure 601.Conduit cover board 205 is fixed on by the sealing of adhering and sealing structure 601 on winding bobbin 201.In temperature-fall period
Bonded structure can generate huge thermal stress, can destroy sealing.
0 is please referred to Fig.1, is a kind of anchor ear schematic diagram.In an infinite embodiment, hooping structure 602 includes
There are arc-shaped fastener 801, arc-shaped fastener 802.Circular arc fastener 801,802 is connected by elastic construction 803.Elasticity knot
Structure 803 is composed of screw rod and multiple elastomeric pads.It gives elastic construction 803 enough pretightning forces under room temperature, is then cooling down
During process begins, hooping structure 602 can give conduit cover board 205 in fastening force always, counteract part adhering and sealing structure 601
Heating power ensure that adhering and sealing structure 601 will not be destroyed.
One aspect of the present invention is to provide a kind of superconducting magnet system.The superconducting magnet system includes two liquid heliums
Tank, the first liquid helium tank and the second liquid helium tank, wherein the second liquid helium tank is placed in the first liquid helium tank, superconducting coil is arranged on the second liquid
In helium tank.Further, the second liquid helium tank by least one accumulator tank be interconnected again with the arc-shaped liquid helium of at least one opening
Reservoir is interconnected composition.At least one accumulator tank of second liquid helium tank is by using low temperature between conduit cover board and winding bobbin
Bonded structure seals to be formed.Exterior loop and exterior loop winding bobbin are placed in the arc-shaped liquid helium reservoir of opening.It is placed in the storage
Winding bobbin in device is fixed on across the reservoir in the support system of magnet by sealing transit joint.Using such knot
Structure is, it can be achieved that the low liquid helium amount operation of magnet.
Liquid helium surge tank, superconducting switch liquid storage box, refrigeration machine liquid helium reflux are also arranged in the magnet system, to
Improve stability of the magnet when low liquid helium amount is run.
Another aspect of the present invention is to provide a kind of low-temperature adhesion sealing structure and method.The bonded structure at least wraps
It includes：
At least one winding bobbin and a conduit cover board；Further, winding bobbin setting spill is bonded conduit, conduit
Convex structure is provided on cover board；Using low-temperature adhesion sealing glue sealing or directly welding between winding bobbin and conduit cover board
Sealing；Low-temperature adhesion sealing glue can be epoxy glue or other low temperature glue.Certainly, it can also make winding bobbin setting convex
Shape is bonded conduit, and concave structure is set on conduit cover board.
Compared to the prior art, superconducting magnet system of the invention is provided with the second liquid helium tank in the first liquid helium tank, surpasses
Loop is completely or partially immersed in the smaller liquid helium tank of second volume.This structure had both realized superconducting coil major part
It is immersed in and ensures that the stable operation of superconducting coil greatly reduces the filling weight of cryogenic liquid again in cryogenic liquid.It is usually this
The loading of the cryogenic liquid of structure can be from 1500L or so reductions to 500L or so.The cost of superconducting magnet is effectively reduced,
The dependence to scarce resource helium can be substantially broken away from again.
Although the invention has been described by way of example and in terms of the preferred embodiments, but it is not for limiting the present invention, any this field
Technical staff without departing from the spirit and scope of the present invention, may be by the methods and technical content of the disclosure above to this hair
Bright technical solution makes possible variation and modification, therefore, every content without departing from technical solution of the present invention, and according to the present invention
Any simple modifications, equivalents, and modifications made to above example of technical spirit, belong to technical solution of the present invention
Protection domain.
Claims (8)
1. a kind of magnet apparatus, which is characterized in that including：
Cavity and the winding bobbin axially extended in the cavity；
Several coils being arranged on the winding bobbin, the coil are sequentially arranged in the axial direction；
For accommodating the cavity of cryogenic liquid in cavity, the cavity is by winding bobbin and is fixed on winding bobbin simultaneously
The first shell for being surrounded on the coil outer is formed, and the volume of the cavity is less than the volume of cavity；
The winding bobbin includes interior loop winding bobbin, the interior loop being placed on the interior loop winding bobbin；Described first
Housing includes conduit cover board, and the conduit cover board is fixed on the interior loop winding bobbin；The conduit cover board, the interior lines
The first cavity for accommodating cryogenic liquid is formed between circle winding bobbin；
The winding bobbin further includes exterior loop winding bobbin, the exterior loop being placed on the exterior loop winding bobbin；Described
One housing includes reservoir, and the exterior loop winding bobbin is placed in the reservoir, the reservoir, part exterior loop coiling
Skeleton forms the second cavity for accommodating cryogenic liquid.
2. magnet apparatus as described in claim 1, which is characterized in that further include：
Second shell, positioned at the outside of the first shell；
The second shell is closed tank, and internal region is the cavity.
3. a kind of magnet apparatus, which is characterized in that including：
The winding bobbin axially extended；
Several coils being arranged on the winding bobbin, the coil are sequentially arranged in the axial direction；
The outside of the coil, the winding bobbin and first shell with the winding bobbin are fixed and be surrounded on to first shell
Form the cavity for accommodating cryogenic liquid；The section of the cavity is the elongated shape extended in the axial direction；
The winding bobbin includes interior loop winding bobbin, the interior loop being placed on the interior loop winding bobbin；Described first
Housing includes conduit cover board, and the conduit cover board is fixed on the interior loop winding bobbin；The conduit cover board, the interior lines
The first cavity for accommodating cryogenic liquid is formed between circle winding bobbin；
The winding bobbin further includes exterior loop winding bobbin, the exterior loop being placed on the exterior loop winding bobbin；Described
One housing includes reservoir, and the exterior loop winding bobbin is placed in the reservoir, the reservoir, part exterior loop coiling
Skeleton forms the second cavity for accommodating cryogenic liquid.
4. magnet apparatus as claimed in claim 3, which is characterized in that the reservoir holds for open rectangle section circular arc type
Device.
5. magnet apparatus as claimed in claim 4, which is characterized in that the opening angle of the reservoir is 0-180 degree.
6. magnet apparatus as claimed in claim 3, which is characterized in that further include the excessive connector of sealing, the sealing excessively connects
Head is used to connect first cavity and second cavity.
7. such as claim 1-6 any one of them magnet apparatus, which is characterized in that further include cryogenic liquid surge tank, institute
Cryogenic liquid surge tank is stated to connect for accommodating the cavity of cryogenic liquid with described.
8. magnet apparatus as claimed in claim 7, which is characterized in that further include superconducting switch liquid storage box, the sub-cooled
Liquid surge tank is connected with described for accommodating the cavity of cryogenic liquid by the superconducting switch liquid storage box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611262089.4A CN106683819B (en) | 2015-09-15 | 2015-09-15 | Magnet apparatus |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510587181.7A CN105139992B (en) | 2015-09-15 | 2015-09-15 | Magnet device |
| CN201611262089.4A CN106683819B (en) | 2015-09-15 | 2015-09-15 | Magnet apparatus |
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| CN201510587181.7A Division CN105139992B (en) | 2014-11-04 | 2015-09-15 | Magnet device |
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| CN106683819A CN106683819A (en) | 2017-05-17 |
| CN106683819B true CN106683819B (en) | 2018-06-19 |
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| CN105788801B (en) * | 2015-12-28 | 2017-11-28 | 沈阳东软医疗系统有限公司 | A kind of coil block for MRI gradient amplifier performance tests |
| CN107204226B (en) | 2016-03-18 | 2020-06-02 | 上海联影医疗科技有限公司 | Low-temperature container of superconducting magnet |
| CN105655084B (en) * | 2016-03-31 | 2018-06-08 | 宁波健信核磁技术有限公司 | A kind of superconducting magnet |
| WO2019127540A1 (en) * | 2017-12-29 | 2019-07-04 | Shenzhen United Imaging Healthcare Co., Ltd. | Attachment method and system |
| CN111902893B (en) * | 2018-04-09 | 2022-03-04 | 三菱电机株式会社 | Superconducting magnet device |
| CN109285648B (en) * | 2018-10-23 | 2021-08-24 | 上海联影医疗科技股份有限公司 | Superconducting joint, superconducting magnet system and superconducting joint preparation method |
| CN109585117B (en) * | 2018-11-20 | 2021-01-05 | 新奥科技发展有限公司 | Superconducting coil device with supporting structure |
| CN111339707B (en) * | 2020-03-11 | 2023-05-26 | 中国科学院近代物理研究所 | Mirror test structure and design method thereof |
| CN112397270B (en) * | 2020-09-24 | 2022-07-12 | 江苏美时医疗技术有限公司 | Superconducting magnet of 7T clinical magnetic resonance imaging equipment |
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|---|---|---|---|---|
| CN103608692A (en) * | 2011-04-21 | 2014-02-26 | 英国西门子公司 | Combined MRI and radiation therapy equipment |
| CN103680801A (en) * | 2012-08-31 | 2014-03-26 | 通用电气公司 | Superconducting magnet system |
| CN203386560U (en) * | 2013-07-04 | 2014-01-08 | 上海联影医疗科技有限公司 | Superconducting magnet device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106683819A (en) | 2017-05-17 |
| CN105139992A (en) | 2015-12-09 |
| CN105139992B (en) | 2017-04-19 |
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Address after: 201807 No. 2258 Chengbei Road, Jiading Industrial Zone, Jiading District, Shanghai. Patentee after: Shanghai Lianying Medical Technology Co., Ltd Address before: 201807 No. 2258 Chengbei Road, Jiading Industrial Zone, Jiading District, Shanghai. Patentee before: SHANGHAI UNITED IMAGING HEALTHCARE Co.,Ltd. |