CN103560353B - A kind of for vacuum-packed without magnetic radio frequency signal connector - Google Patents
A kind of for vacuum-packed without magnetic radio frequency signal connector Download PDFInfo
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- CN103560353B CN103560353B CN201310399477.7A CN201310399477A CN103560353B CN 103560353 B CN103560353 B CN 103560353B CN 201310399477 A CN201310399477 A CN 201310399477A CN 103560353 B CN103560353 B CN 103560353B
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Abstract
The present invention relates to one for vacuum-packed without magnetic radio frequency signal connector, it comprises transport element and sealing device, described sealing device comprises the sealing of transport element, and it is the sealing device of an overall movable dismounting that seal body (4) is connected radially across brass module body (9) and with compacting ring (6), O type circle (7) and locking nut (8); Described sealing device comprises the sealing of transport element and seals with vacuum chamber outer wall (1), the contact hole (12) that the sealing of described transport element is provided with by seal body (4), scribbles fluid sealant (10) in contact hole (12); Make vacuum seal effective by two kinds of sealing means, vacuum leak rate is less than 1.0 × 10
-10pa ﹒ m
3/ s, whole project organization is simple, and cost of manufacture is low, easy to make.
Description
Technical field
The present invention relates to a kind of for vacuum-packed without magnetic radio frequency signal connector, refer more particularly to one have vacuum sealing function can be used in again to nonmagnetic can the radio frequency (RF) coaxial connector for transmitting radio frequency signal of the very high occasion (such as nulcear magnetic resonance (NMR)) of requirement.
Background technology
Radio frequency signal connector (being called for short RF connector) is considered to a kind of element being installed on cable or being arranged on instrument usually, as the element that transmission line signals connects or is separated, mainly serve as a connection, except serving as a connection, have the function of processing signals concurrently, as filtering, phase modulation position, mixing, decay, detection, amplitude limit etc., have the advantages that volume is little.
There is the conventional RF signal connector of various interface in the market, apply to every field widely, along with promoting the use of of market, various types of radio frequency connector technology is more and more ripe, basicusing is at general field, if but apply in special dimension, during as higher in system requirements vacuum seal environment, conventional radio frequency connector can not meet its vacuum seal requirement, in this case, need to adopt the radio frequency connector with good vacuum seal performance, and for example in magnetic resonance system, conventional radio frequency connector is made up of magnetic material, magnetic field's regularity can be affected, and it is low to reach leak rate, the object that shield effectiveness is good, in addition, conventional vacuum seal radio frequency connector, is all connected inside and outside vacuum chamber by wire, is only suitable for transmitting relevant direct current signal.
China Patent Publication No. CN102856717A, publication date: on 01 02nd, 2013, denomination of invention is: a kind of radio frequency (RF) coaxial connector with vacuum sealing function, this application case discloses a kind of radio frequency (RF) coaxial connector with vacuum sealing function, to meet the radiofrequency signal I/O needs of vacuum sealing system, it is unreliable that radio frequency connector in this application case there will be connection after repeatedly plugging use, the sealing ring of the radio frequency connector in this application case adopts polytetrafluoroethylmaterial material, thisly can not ensure to keep vacuum-packed ability for a long time as encapsulant, be difficult to guarantee less leakage rate, this radio frequency connector can be used for transmitting radiofrequency signal.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind ofly has vacuum sealing function, less leakage rate and can be used in and can require high occasion to nonmagnetic, is especially applicable to the radiofrequency signal coaxial connector of multichannel high-temperature superconductor radio-frequency coil in magnetic resonance system.
One is provided for vacuum-packed without magnetic radio frequency signal connector in order to solve the problems of the technologies described above, it comprises transport element and sealing device, transport element is radially across sealing device, described transport element by coaxial line with for being connected forming without magnetic radio-frequency joint of radiofrequency signal, radio-frequency joint is connected with coaxial line two ends respectively; Described sealing device comprises the sealing of transport element, the sealing of seal body and the sealing of vacuum chamber outer wall, and the contact hole that the sealing of described transport element is provided with by seal body, scribbles fluid sealant in contact hole; The sealing of described seal body refer to periphery be provided be made up of brass form the brass module body of annular seal space with vacuum chamber wall contacts, it is the sealing device of an overall movable dismounting that seal body is connected radially across brass module body and with compacting ring, O type circle and locking nut; Described vacuum chamber outer wall sealing refers to that brass module body is fixed on vacuum chamber outer wall by hold-down nut, brass module body is bonding with vacuum chamber outer wall by low temperature glue, brass module body and hold-down nut are formed as sealing device, and described seal body, locking nut and hold-down nut are made by without magnetic brass or red copper material.
Described vacuum-packed be a kind of detachable vacuum-packed without magnetic radio frequency signal connector without magnetic radio frequency signal connector.
Present invention also offers one for vacuum-packed without magnetic radio frequency signal connector, it comprises transport element and sealing device, transport element is radially across sealing device, described transport element by coaxial line with for being connected forming without magnetic radio-frequency joint of radiofrequency signal, radio-frequency joint is connected with coaxial line two ends respectively; Described sealing device comprises the sealing of transport element and the sealing of vacuum chamber outer wall, the contact hole that the sealing of described transport element is provided with by seal body, scribbles fluid sealant in contact hole; Described vacuum chamber outer wall sealing refers to that seal body is fixed on vacuum chamber outer wall by hold-down nut, seal body is bonding with vacuum chamber outer wall by low temperature glue, seal body and hold-down nut form fixed sealing device, and described seal body and hold-down nut are made by without magnetic brass or red copper material.
Described vacuum-packed a kind of distressed structure without magnetic radio frequency signal connector.
As a further improvement on the present invention, the screen of described coaxial line and seal body together constitute the screen of transport element, and the screen of described coaxial line and seal body are by being welded to connect.
The invention provides one for vacuum-packed without magnetic radio frequency signal connector, have for vacuum occasion transmitting radio frequency signal and whole connector completely without magnetic, can be used for vacuum and the exigent occasion of nonmagnetic energy, the purposes of high-temperature superconductor radio-frequency coil transmitting radio frequency signal in magnetic resonance system.
Compared with prior art, the present invention has following advantages.
It is the sealing device of an overall movable dismounting that seal body is connected radially across brass module body and with compacting ring, O type circle and locking nut, seal body is bonding with vacuum chamber outer wall by low temperature glue, seal body and hold-down nut form fixed sealing device, described screen and seal body are by being welded to connect, make vacuum seal effective by two kinds of sealing means, vacuum leak rate is less than 1.0*10
-10pa ﹒ m
3/ s, whole project organization is simple, and cost of manufacture is low, easy to make.
Described sealing device is made by without magnetic brass or red copper material, makes connector can not affect magnetic field's regularity in magnetic resonance system, can high-temperature superconductor radio-frequency coil in magnetic resonance imaging system; This connector can select fixed radio frequency signal connector or detachable radio frequency signal connector according to different demand; The characteristic impedance of this connector can make different qualities impedance according to different demand.
Accompanying drawing explanation
Fig. 1 is the vacuum-packed structural representation without magnetic radio frequency signal connector of stationary structure of the present invention.
Fig. 2 is the vacuum-packed structural representation without magnetic radio frequency signal connector of demountable structure of the present invention.
Embodiment
Embodiment one.
As shown in Figure 1, vacuum-packed without magnetic radio frequency signal connector, it comprises transport element and sealing device, transport element is radially across sealing device, described transport element by coaxial line 2 with for being connected forming without magnetic radio-frequency joint 3 of radiofrequency signal, radio-frequency joint 3 is connected with coaxial line 2 two ends respectively, described sealing device is made up of seal body 4 and hold-down nut 5, described sealing device is made by without magnetic brass or red copper material, described seal body 4 is fixed on vacuum chamber outer wall 1 by hold-down nut 5, seal body 4 is bonding with vacuum chamber outer wall 1 by low temperature glue, seal body 4 and hold-down nut 5 form fixed sealing device, be non-removable sealing device, seal body 4 radial position is provided with contact hole 12, fluid sealant 10 is scribbled in contact hole 12, as AB glue or epoxy resin low temperature glue, seal body 4 axially position has aperture, coaxial line 2 is passed through, coaxial line 2 adopts half steel wire, described screen 11 and seal body 4 are by welding soldered being connected together, contact with high temperature superconductor coil in magnetic resonance system as radio-frequency joint 3, other positions of its sealing device can not have an impact to its vacuum seal and leak rate, sealing leak rate is made to be less than 1.0*10
-10pa ﹒ m
3/ s.
Embodiment two.
As shown in Figure 2, vacuum-packed without magnetic radio frequency signal connector, it comprises transport element and sealing device, transport element is radially across sealing device, described transport element by coaxial line 2 with for being connected forming without magnetic radio-frequency joint 3 of radiofrequency signal, radio-frequency joint 3 is connected with coaxial line 2 two ends respectively, and seal body 9 axially has aperture at sealing device, and coaxial line 2 can be passed through, described sealing device is by seal body 4, hold-down nut 5, compacting ring 6, O type circle 7 and locking nut 8 form, described seal body 4 periphery be provided be made up of brass form the brass module body 9 of annular seal space with vacuum chamber wall contacts, described sealing device is made by without magnetic brass or red copper material, brass module body 9 is bonding by low temperature glue with vacuum chamber outer wall 1, as AB glue, and by hold-down nut 5, brass module body 9 and vacuum chamber outer wall 1 are reinforced, improve sealing intensity, O type circle 7 and compacting ring 6 are arranged on brass module body 9 upper end, locking nut 8 is set in O type circle 7, compacting ring 6 and brass module body 9 top, seal body 4 is radially across brass module body 9, and by compacting ring 6, O type circle 7 and locking nut 8 connect into an entirety with brass module body 9, facilitate dismounting, there is good sealing effectiveness, the radial position of seal body 4 has little contact hole 12, be convenient to add sealing glue 10, as AB glue or epoxy resin low temperature glue, easy and simple to handle.
Coaxial line 2 adopts half steel wire, radio-frequency joint 3 is connected with coaxial line 2 two ends respectively, be screen 11 between described coaxial line 2 and seal body 4, described screen 11 and seal body 4 are by welding soldered being connected together, contact with high temperature superconductor coil in magnetic resonance system as radio-frequency joint 3, other positions of its sealing device can not have an impact to its vacuum seal and leak rate, make sealing leak rate be less than 1.0*10
-10pa ﹒ m
3/ s.
Claims (4)
1. one kind for vacuum-packed without magnetic radio frequency signal connector, it comprises transport element and sealing device, transport element is radially across sealing device, described transport element by coaxial line (2) with for being connected forming without magnetic radio-frequency joint (3) of radiofrequency signal, radio-frequency joint (3) is connected with coaxial line (2) two ends respectively;
It is characterized in that: described sealing device comprises the sealing of transport element, the sealing of seal body (4) and the sealing of vacuum chamber outer wall, the contact hole (12) that the sealing of described transport element is provided with by seal body (4), scribbles fluid sealant (10) in contact hole (12); The sealing of described seal body (4) refer to periphery be provided be made up of brass form the brass module body (9) of annular seal space with vacuum chamber wall contacts, it is the sealing device of an overall movable dismounting that seal body (4) is connected radially across brass module body (9) and with compacting ring (6), O type circle (7) and locking nut (8); Described vacuum chamber outer wall sealing refers to that brass module body (9) is fixed on vacuum chamber outer wall (1) by hold-down nut (5), brass module body (9) is bonding with vacuum chamber outer wall (1) by low temperature glue, brass module body (9) and hold-down nut (5) are formed as sealing device, and described seal body (4), locking nut (8) and hold-down nut (5) are made by without magnetic brass or red copper material.
2. one kind for vacuum-packed without magnetic radio frequency signal connector, it comprises transport element and sealing device, transport element is radially across sealing device, described transport element by coaxial line (2) with for being connected forming without magnetic radio-frequency joint (3) of radiofrequency signal, radio-frequency joint (3) is connected with coaxial line (2) two ends respectively;
It is characterized in that: described sealing device comprises the sealing of transport element and vacuum chamber outer wall (1) sealing that the contact hole (12) that the sealing of described transport element is provided with by seal body (4) scribbles fluid sealant (10) in contact hole (12); Described vacuum chamber outer wall sealing refers to that seal body (4) is fixed on vacuum chamber outer wall (1) by hold-down nut (5), seal body (4) is bonding with vacuum chamber outer wall (1) by low temperature glue, seal body (4) and hold-down nut (5) form fixed sealing device, and described seal body (4) and hold-down nut (5) are made by without magnetic brass or red copper material.
3. according to claim 1 and 2 for vacuum-packed without magnetic radio frequency signal connector, it is characterized in that: screen (11) and the seal body (4) of described coaxial line (2) together constitute the screen of transport element, and the screen (11) of described coaxial line (2) and seal body (4) are by being welded to connect.
4. according to claim 1 for vacuum-packed without magnetic radio frequency signal connector, it is characterized in that: described vacuum-packed be a kind of detachable vacuum-packed without magnetic radio frequency signal connector without magnetic radio frequency signal connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310399477.7A CN103560353B (en) | 2013-09-05 | 2013-09-05 | A kind of for vacuum-packed without magnetic radio frequency signal connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310399477.7A CN103560353B (en) | 2013-09-05 | 2013-09-05 | A kind of for vacuum-packed without magnetic radio frequency signal connector |
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| Publication Number | Publication Date |
|---|---|
| CN103560353A CN103560353A (en) | 2014-02-05 |
| CN103560353B true CN103560353B (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310399477.7A Active CN103560353B (en) | 2013-09-05 | 2013-09-05 | A kind of for vacuum-packed without magnetic radio frequency signal connector |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108718012A (en) * | 2018-05-29 | 2018-10-30 | 中国科学院上海光学精密机械研究所 | Non-magnetic ultrahigh vacuum microwave connector |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201838736U (en) * | 2010-03-15 | 2011-05-18 | 天津海泰超导电子有限公司 | Welding type wall-penetrating radio-frequency coaxial connector |
| CN102570094A (en) * | 2010-12-29 | 2012-07-11 | 中国科学院电子学研究所 | High-voltage lead assembly for ultrahigh vacuum device and manufacture method thereof |
| CN102904103A (en) * | 2012-09-06 | 2013-01-30 | 西北核技术研究所 | Radio frequency coaxial connector with bidirectional high-voltage sealing function |
| CN203521751U (en) * | 2013-09-05 | 2014-04-02 | 江苏美时医疗技术有限公司 | Non-magnetic radiofrequency signal connector for vacuum sealing |
-
2013
- 2013-09-05 CN CN201310399477.7A patent/CN103560353B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201838736U (en) * | 2010-03-15 | 2011-05-18 | 天津海泰超导电子有限公司 | Welding type wall-penetrating radio-frequency coaxial connector |
| CN102570094A (en) * | 2010-12-29 | 2012-07-11 | 中国科学院电子学研究所 | High-voltage lead assembly for ultrahigh vacuum device and manufacture method thereof |
| CN102904103A (en) * | 2012-09-06 | 2013-01-30 | 西北核技术研究所 | Radio frequency coaxial connector with bidirectional high-voltage sealing function |
| CN203521751U (en) * | 2013-09-05 | 2014-04-02 | 江苏美时医疗技术有限公司 | Non-magnetic radiofrequency signal connector for vacuum sealing |
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|---|---|
| CN103560353A (en) | 2014-02-05 |
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