CN106772160A - high temperature radio frequency coil with cooling structure - Google Patents
high temperature radio frequency coil with cooling structure Download PDFInfo
- Publication number
- CN106772160A CN106772160A CN201710145656.6A CN201710145656A CN106772160A CN 106772160 A CN106772160 A CN 106772160A CN 201710145656 A CN201710145656 A CN 201710145656A CN 106772160 A CN106772160 A CN 106772160A
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- Prior art keywords
- coil
- skeleton
- pipe
- radio frequency
- waveguide
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Classifications
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- 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
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
- G01R33/34007—Manufacture of RF coils, e.g. using printed circuit board technology; additional hardware for providing mechanical support to the RF coil assembly or to part thereof, e.g. a support for moving the coil assembly relative to the remainder of the MR system
-
- 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
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
- G01R33/34092—RF coils specially adapted for NMR spectrometers
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
The invention discloses the high temperature radio frequency coil with cooling structure, there is first receiving space between first wave conduit and the first skeleton fixing pipe, there is the second receiving space between second waveguide pipe and the second skeleton fixing pipe, first skeleton fixing pipe is connected to and is provided with connector under the coil of high-temperature gas import, and the second skeleton fixing pipe is connected to the hood for being provided with high-temperature gas outlet；Coil rack includes being arranged on ceramic skeleton, skeleton sleeve and cooling pipe from inside to outside, skeleton sleeve is set on ceramic skeleton, cooling pipe is coiled on the outer wall of skeleton sleeve in coil-like, the two ends of cooling pipe are respectively communicated to first receiving space, the second receiving space, and gas at normal temperature inlet attack, gas at normal temperature outlet connection are respectively equipped with first, second waveguide pipe outer wall.The high temperature radio frequency coil that the present invention is provided, is unlikely to deform, stable performance.
Description
Technical field
The present invention relates to radio-frequency coil, more particularly to a kind of high temperature radio frequency coil with cooling structure.
Background technology
Effect of the radio-frequency coil in magnetic resonance system is receiving and transmitting signal, that is, launch high-power RF pulse signal and reception
Extremely low power nuclear magnetic signal.In sample alternating temperature magnetic resonance system, convenient sample alternating temperature, efficiency high, the one of low cost are realized
Planting implementation is：Gas at normal temperature is dried by the way that after controllable heating system, the air-flow of required temperature can enter radio-frequency coil skeleton
Inner chamber carries out temperature control to the sample in test tube.The scope of alternating temperature is：Indoor temperature~210 DEG C, high temperature tests continuous use time
Can reach 5h.
The coil rack of conventional RF coil uses the material of polytetrafluoroethylene (PTFE), the material be in itself it is resistant to elevated temperatures,
But because the polytetrafluoroethylene (PTFE) one-sided thickness for being made coil rack is 2mm；If for a long time under the condition of high temperature, then poly- four
PVF coil rack certainly will have deformation, and the deformation of polytetrafluoroethylene (PTFE) skeleton can cause inductance and radiofrequency field above it to be sent out
Changing, the stability to radio-frequency coil makes a big impact；Other high temperature can be influenceed by heat radiation and heat exchange pattern
Electronic component and permanent magnet on radio-frequency coil.The change of electronic component performance can also make to the stability of radio-frequency coil
Into influence, in addition permanent magnet be Ru-Fe-Mn material it is made, it is very sensitive to temperature that it is, the fluctuation of permanent magnet can be caused
Fluctuation on nuclear magnetic signal, strong influence is caused to nuclear-magnetism experiment.So material type selecting to high temperature radio frequency coil rack and
Its structure design, also insulation material type selecting and its structure design are necessary.In addition magnetic resonance system detection is
Hydrogeneous sample, so hydrogeneous radio-frequency coil skeleton, hydrogeneous insulation material will certainly cause to detect the interference of sample, in addition
Due to the particularity of nuclear-magnetism, it is impossible to directly with water-cooled cooling on the market and metal high surface area heat dissipation technology, these factors pair
The design of high temperature radio frequency coil brings great difficulty.The present invention is therefore.
The content of the invention
Based on above mentioned problem, it is an object of the present invention to provide a kind of high temperature radio frequency coil with cooling structure, solve existing
There is technology high temperature radio-frequency coil to be easily deformed, the difficult influence radio-frequency coil component performance of radiating, permanent magnet field intensity and uniformity
Problem.
In order to solve the problems of the prior art, the technical scheme that the present invention is provided is：
High temperature radio frequency coil with cooling structure, including magazine, the coil bone that is arranged in the magazine
Frame and first, second waveguide of the magazine both sides is arranged on, the two ends of the coil rack are respectively by being located in
First, second skeleton fixing pipe in first, second waveguide is fixed on the magazine, the first wave conduit
Between the first skeleton fixing pipe have first receiving space, the second waveguide pipe and the second skeleton fixing pipe it
Between there is the second receiving space, the first skeleton fixing pipe is connected to and is provided with connector under the coil of high-temperature gas import, institute
State the second skeleton fixing pipe and be connected to the hood for being provided with high-temperature gas outlet；The coil rack includes being arranged on from inside to outside
Ceramic skeleton, skeleton sleeve and cooling pipe, the skeleton sleeve are set on the ceramic skeleton, and the cooling pipe is in coil-like
It is coiled on the outer wall of the skeleton sleeve, the two ends of the cooling pipe are respectively communicated to the first receiving space, the second appearance
Receive space, the gas at normal temperature for being communicated to first, second receiving space is respectively equipped with the first, second waveguide pipe outer wall
Inlet attack, gas at normal temperature outlet connection.
In some implementation methods wherein, the lower end of the ceramic skeleton is provided with hollow coil extension bar, the line
Circle extension bar is located in the first skeleton fixing pipe and extends to the high-temperature gas import of connector under the coil.
In some implementation methods wherein, the first wave conduit, second waveguide pipe are fixed on institute by waveguide mount
State on magazine.
In some implementation methods wherein, the hood includes cover portions and exhaust portion, and the cover portions are fixed on
The second waveguide pipe upper end, the exhaust portion bottom is provided with several steam vents and is exported as high-temperature gas, the exhaust portion
It is hollow and be provided with test tube fixture in groove.
In some implementation methods wherein, it is provided between the cover portions and the second waveguide pipe on coil and is connected
Part, the coil upper connector accommodates empty with the through hole matched with the second skeleton fixing pipe upper port and with described second
Between match annular boss.
In some implementation methods wherein, the magazine outer wall is provided with tuning handle.
In some implementation methods wherein, the magazine outer wall is provided with for connecting radio-frequency coil and permanent magnet
Attachment structure, the attachment structure includes the L-type being fixed on magazine outer wall support and is fixed on the L-type branch
Connector in support
In some implementation methods wherein, the cooling pipe is made of polytetrafluoroethylmaterial material.
Compared with prior art, it is an advantage of the invention that：
1st, using technical scheme, high temperature radio frequency coil rack is made of ceramic material, than conventional using poly-
The test of the skeleton more withstanding high temperatures that tetrafluoroethene makes, situation about can use for a long time without there is framework deformation, greatly
The big stability that improve high temperature radio frequency coil under hot environment；
2nd, using technical scheme, coil rack is lowered the temperature by setting coiled cooling pipe, passing to can
The gas of flow rate is adjusted, state of the high temperature radio frequency coil ceramic skeleton outside in low temperature can be effectively ensured, improve
Stability of the magnetic resonance system in high-temperature operation；
3rd, using technical scheme, ceramic material main component is potter's clay, and polytetrafluoroethyldisk disk tube material is poly-
Tetrafluoroethene, the material of both is not hydrogeneous, and hydrogenous material can be inhibited to do high temperature radio frequency coil and insulation material to micro-
The collection of weak nuclear magnetic signal is interfered.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to that will use needed for embodiment description
Accompanying drawing be briefly described, drawings in the following description are only some embodiments of the present invention, for the common skill in this area
For art personnel, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of high temperature radio frequency coil embodiment of the present invention with cooling structure；
Fig. 2 is the explosive view of the embodiment of the present invention；
Fig. 3 is the structural representation of hood in the embodiment of the present invention；
Fig. 4 is the structural representation that the present invention implements coil upper connector；
Wherein：
1st, magazine；1a, frame body；1b, coil barricade；2nd, ceramic skeleton；3rd, skeleton sleeve；4th, cooling pipe；
5th, the first skeleton fixing pipe；6th, first wave conduit；7th, connector under coil；8th, coil extension bar；9th, the second skeleton fixing pipe；
10th, second waveguide pipe；11st, hood；11a, cover portions；11b, exhaust portion；11c, steam vent；12nd, test tube fixture；13rd, line
Circle upper connector；13a, through hole；13b, annular boss；14th, L-type support；15th, connector；16th, waveguide fixed seat；17th, tune
Handle；18th, filamentary silver four fluorine tube is worn；19th, gas at normal temperature inlet attack；20th, gas at normal temperature outlet connection；21st, high-temperature gas import；
A, first receiving space；B, the second receiving space.
Specific embodiment
Such scheme is described further below in conjunction with specific embodiment.It should be understood that these embodiments are for illustrating
The present invention and be not limited to limit the scope of the present invention.The implementation condition used in embodiment can be done according to the condition of specific producer
Further adjustment, unreceipted implementation condition is usually the condition in normal experiment.
It is the structural representation of the embodiment of the present invention referring to Fig. 1-4, there is provided a kind of high temperature radio frequency line with cooling structure
Circle, including magazine 1, the coil rack being arranged in magazine 1 and the first wave guide that is arranged on the both sides of magazine 1
Pipe 6, second waveguide pipe 10, magazine 1 include frame body 1a and are arranged on the coil of frame body 1a thickness directions both sides
Barricade 1b, the two ends of coil rack are fixed on magazine 1 by the first skeleton fixing pipe 5, the second skeleton fixing pipe 9 respectively
On, wherein the first skeleton fixing pipe 5 is located in first wave conduit 6 and has first receiving space between first wave conduit 6
A, the second skeleton fixing pipe 9 is located in second waveguide pipe 10 and has the second receiving space B between second waveguide pipe 10, the
One skeleton fixing pipe 5 is connected to and is provided with connector 7 under the coil of high-temperature gas import 21, and the second skeleton fixing pipe 9 is connected to and sets
There is the hood 11 that high-temperature gas is exported, high-temperature gas enters coil rack through connector under coil 7, the first skeleton fixing pipe 5
Hot environment required for interior formation sample detection, then discharges through the second skeleton fixing pipe 9, hood 11.
Coil rack includes ceramic skeleton 2, skeleton sleeve 3 and the cooling pipe 4 arranged from inside to outside, it is preferred that cooling pipe 4
It is made of polytetrafluoroethylmaterial material, around being located on ceramic skeleton 2, skeleton sleeve 3 is set on ceramic skeleton 2 filamentary silver, is lowered the temperature
Pipe 4 is coiled on the outer wall of skeleton sleeve 3 in coil-like, and the two ends of pipe 4 of lowering the temperature are respectively communicated to first receiving space A, second
Receiving space B, is communicated with to the gas at normal temperature inlet attack 19 of first receiving space A on the outer wall of first wave conduit 6,
It is communicated with the outer wall of two waveguide 10 to the gas at normal temperature outlet connection 20 of the second receiving space B, the frequent wet of gas at normal temperature
Body entrance enters cooling pipe 4 after meeting 19 entrance first receiving space A, is then connect through the second receiving space B, gas at normal temperature outlet
First 20 discharge, because the cooling large area of pipe 4 is coiled in the outer wall of skeleton sleeve 3, gas at normal temperature is by the heat on the outer wall of skeleton sleeve 3
Outside band to magazine 1, the surface of ceramic skeleton 2 is in than lower temperature, can for a long time keep magnetic resonance system constant temperature ring
The temperature difference that border and sample controlled heat environment bring is in the scope of very little, when can effectively ensure that operation high temperature magnetic resonance is tested,
The stability of high temperature radio frequency coil and permanent magnet, the stability of the whole machine of magnetic resonance system.
In order to further optimize implementation result of the invention, hollow coil extension bar is provided with the lower end of ceramic skeleton 2
8, coil extension bar 8 is located in the first skeleton fixing pipe 5 and extends to the high-temperature gas import of connector 7 under coil, can be with
High-temperature gas is set to be passed directly to sample bottom of the tube, so as to reduce the loss during gas motion.
In this example, first wave conduit 6, second waveguide pipe 10 are fixed on magazine by waveguide fixed seat 16, ripple
Conduit fixed seat 16 is provided with mounting hole, waveguide fixed seat 16 is fixed by screws on magazine 1 during installation, first wave
Conduit 6, second waveguide pipe 10 and the interference fit of waveguide fixed seat 16.
Hood 11 includes that cover portions 11a and exhaust portion 11b, cover portions 11a are fixed on the upper end of second waveguide pipe 10, is vented
Portion 11b bottoms are provided with several steam vents 11c and are exported as high-temperature gas, and exhaust portion 11b is hollow and is provided with test tube fixture 12
In in groove, test tube fixture 12 is taken out when using, sample cell is placed on inside ceramic skeleton 2, then fix test tube
Part 12 is pressed against in hood 11 and fixes sample cell.
In order to further optimize implementation result of the invention, coil is provided between cover portions 11a and second waveguide pipe 10
Upper connector 13, coil upper connector 13 is accommodated with the through hole 13a matched with the upper port of the second skeleton fixing pipe 9 and with second
The annular boss 13b of space B matching, will separate between the second receiving space B and hood 11.
The through hole for having M3 on magazine 1 can be fixed with tuning capacitance, coil tuning handle 17 in fixation procedure
It is stuck between magazine 1 and tuning capacitance.It is to prevent filamentary silver and the contact discharge of magazine 1 to wear filamentary silver tetrafluoro set.
Tuning handle 17 is made of polyetheretherketonematerials materials.
High temperature radio frequency coil and permanent magnet are connected for convenience, are provided with for connecting radio frequency line on the outer wall of magazine 1
The attachment structure of circle and permanent magnet, the attachment structure includes the L-type being fixed on the outer wall of magazine 1 support 14 and is fixed on L
Connector 15 in type support 14.
Examples detailed above technology design and feature only to illustrate the invention, its object is to allow person skilled in the art to be
Will appreciate that present disclosure and implement according to this, it is not intended to limit the scope of the present invention.It is all smart according to the present invention
Equivalent transformation or modification that refreshing essence is done, should all be included within the scope of the present invention.
Claims (8)
1. there is the high temperature radio frequency coil of cooling structure, it is characterised in that：Including magazine (1), it is arranged on the coil former
Coil rack in frame (1) and first, second waveguide (6,10) of the magazine (1) both sides is arranged on, the coil
The two ends of skeleton first, second skeleton fixing pipe (5,9) respectively by being located in first, second waveguide (6,10)
It is fixed on the magazine (1), has first between the first wave conduit (6) and the first skeleton fixing pipe (5)
Receiving space (A), has the second receiving space (B) between the second waveguide pipe (10) and the second skeleton fixing pipe its (9),
The first skeleton fixing pipe (5) is connected to and is provided with connector (7) under the coil of high-temperature gas import (21), second skeleton
Fixing pipe (9) is connected to the hood (11) for being provided with high-temperature gas outlet；The coil rack includes being arranged on pottery from inside to outside
Porcelain body frame (2), skeleton sleeve (3) and cooling pipe (4), the skeleton sleeve (3) is set on the ceramic skeleton (2), described
Cooling pipe (4) is coiled on the outer wall of the skeleton sleeve (3) in coil-like, and the two ends of cooling pipe (4) are respectively communicated to
The first receiving space (A), the second receiving space (B), the company of being respectively equipped with first, second waveguide (the 6,10) outer wall
Pass to gas at normal temperature inlet attack (19), the gas at normal temperature outlet connection (20) of first, second receiving space (A, B).
2. the high temperature radio frequency coil with cooling structure according to claim 1, it is characterised in that：The ceramic skeleton
(2) lower end is provided with hollow coil extension bar (8), and the coil extension bar (8) is located in the first skeleton fixing pipe (5)
High-temperature gas import (21) that is interior and extending to connector (7) under the coil.
3. the high temperature radio frequency coil with cooling structure according to claim 1, it is characterised in that：The first wave conduit
(6), second waveguide pipe (10) is fixed on the magazine (1) by waveguide fixed seat (16).
4. the high temperature radio frequency coil with cooling structure according to claim 1, it is characterised in that：The hood (11)
Including cover portions (11a) and exhaust portion (11b), the cover portions (11a) are fixed on second waveguide pipe (10) upper end, described
Exhaust portion (11b) bottom is provided with several steam vents (11c) and is exported as high-temperature gas, and the exhaust portion (11b) is hollow and sets
There is test tube fixture (12) in groove.
5. the high temperature radio frequency coil with cooling structure according to claim 4, it is characterised in that：The cover portions
Be provided with coil upper connector (13) between (11a) and the second waveguide pipe (10), the coil upper connector (13) with
The through hole (13a) of the second skeleton fixing pipe (9) upper port matching and convex with the ring-type that second receiving space (B) matches
Platform (13b).
6. the high temperature radio frequency coil with cooling structure according to claim 1, it is characterised in that：The magazine
(1) outer wall is provided with tuning handle (17).
7. the high temperature radio frequency coil with cooling structure according to claim 1, it is characterised in that：The magazine
(1) outer wall is provided with the attachment structure for connecting radio-frequency coil and permanent magnet, and the attachment structure includes being fixed on the line
L-type on ring box frame (1) outer wall supports (14) and the connector (15) being fixed on L-type support (14).
8. according to any described high temperature radio frequency coil with cooling structure of claim 1 to 7, it is characterised in that：The drop
Temperature pipe (4) is made of polytetrafluoroethylmaterial material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145656.6A CN106772160B (en) | 2017-03-13 | 2017-03-13 | High-temperature radio frequency coil with cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145656.6A CN106772160B (en) | 2017-03-13 | 2017-03-13 | High-temperature radio frequency coil with cooling structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106772160A true CN106772160A (en) | 2017-05-31 |
| CN106772160B CN106772160B (en) | 2023-04-18 |
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ID=58962604
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710145656.6A Active CN106772160B (en) | 2017-03-13 | 2017-03-13 | High-temperature radio frequency coil with cooling structure |
Country Status (1)
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| CN (1) | CN106772160B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111025209A (en) * | 2019-12-20 | 2020-04-17 | 深圳安科高技术股份有限公司 | Temperature control circuit of nuclear magnetic resonance system and nuclear magnetic resonance system |
| WO2023087729A1 (en) * | 2021-11-19 | 2023-05-25 | 苏州纽迈分析仪器股份有限公司 | Nuclear magnetic resonance coil structure and nuclear magnetic resonance device having same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023087729A1 (en) * | 2021-11-19 | 2023-05-25 | 苏州纽迈分析仪器股份有限公司 | Nuclear magnetic resonance coil structure and nuclear magnetic resonance device having same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106772160B (en) | 2023-04-18 |
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