CN103560353A - Non-magnetic RF signal connector for vacuum sealing - Google Patents
Non-magnetic RF signal connector for vacuum sealing Download PDFInfo
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- CN103560353A CN103560353A CN201310399477.7A CN201310399477A CN103560353A CN 103560353 A CN103560353 A CN 103560353A CN 201310399477 A CN201310399477 A CN 201310399477A CN 103560353 A CN103560353 A CN 103560353A
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- radiofrequency signal
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Abstract
The invention relates to a non-magnetic RF signal connector for vacuum sealing. The non-magnetic RF signal connector for vacuum sealing comprises a conductive element and a sealing device. The sealing device comprises the sealing of the conductive element. A sealing member body (4) radially passes through a brass assembly body (9) and is connected with a clamping ring (6), an O-shaped ring (7) and a locking nut (8) to be the sealing device which can be movably dismounted integratedly. The sealing device comprises the sealing of the conductive element and the sealing of a vacuum chamber outer wall (1). The sealing of the conductive element is achieved through a contact hole (12) arranged on the sealing member body (4). A sealant (10) is pasted in the contact hole (12). Through two modes of sealing, the vacuum sealing effect is good, the vacuum leak rate is smaller than 1.0*10<-10>Pa.m3/s, and the non-magnetic RF signal connector has the advantages of simple integrated design structure, low manufacturing cost, and convenient manufacture.
Description
Technical field
The present invention relates to a kind of for vacuum-packed without magnetic radiofrequency signal connector, refer more particularly to and a kind ofly there is vacuum sealing function and can be used in again the radio frequency (RF) coaxial connector for transmitting radio frequency signal that can require very high occasion (for example nulcear magnetic resonance (NMR)) to nonmagnetic.
Background technology
Radiofrequency signal connector (being called for short RF connector) is conventionally considered to be installed on cable or is arranged on a kind of element on instrument, as transmission line signals, connect or separated element, 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.
The conventional radiofrequency signal connector that has in the market various interface, apply to widely every field, along with promoting the use of of market, various types of radio frequency connector technology are more and more ripe, basicusing is in conventional field, if but applied in special dimension, during vacuum seal environment as higher in system requirements, 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 by magnetic material, can affect the uniformity in magnetic field, 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 to connect inside and outside vacuum chamber by wire, is only suitable for transmitting relevant direct current signal.
China Patent Publication No. CN102856717A, open day: 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, radio frequency connector in this application case is through repeatedly there will be connection unreliable after plug use, the sealing ring of the radio frequency connector in this application case adopts polytetrafluoroethylmaterial material, thisly as encapsulant, can not guarantee to keep for a long time vacuum-packed ability, 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 be to provide a kind of there is vacuum sealing function, less leakage rate and can be used in to nonmagnetic, can require high occasion, be especially applicable to the radiofrequency signal coaxial connector of multichannel high-temperature superconductor radio-frequency coil in magnetic resonance system.
For solve the problems of the technologies described above provide a kind of for vacuum-packed without magnetic radiofrequency signal connector, it comprises transport element and sealing device, transport element is radially through 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 with vacuum chamber outer wall sealing, 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 with by brass, formed contact the brass module body that forms annular seal space with vacuum chamber outer wall, seal body is radially connected to the sealing device of a whole movable dismounting through 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 by low temperature glue and vacuum chamber outer wall, the sealing device that brass module body and hold-down nut form, described seal body, locking nut and hold-down nut are by making without magnetic brass or red copper material.
Described vacuum-packed without magnetic radiofrequency signal connector, be a kind of detachable vacuum-packed without magnetic radiofrequency signal connector.
The present invention also provide a kind of for vacuum-packed without magnetic radiofrequency signal connector, it comprises transport element and sealing device, transport element is radially through 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 comprise transport element sealing and with vacuum chamber outer wall sealing, 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 by low temperature glue and vacuum chamber outer wall, seal body and hold-down nut form fixed sealing device, and described seal body and hold-down nut are by making without magnetic brass or red copper material.
Described vacuum-packed a kind of distressed structure without magnetic radiofrequency signal connector.
As a further improvement on the present invention, the screen of described coaxial line and seal body have formed the screen of transport element jointly, and described screen and seal body are by being welded to connect.
The invention provides a kind of for vacuum-packed without magnetic radiofrequency 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.
Seal body is radially connected to the sealing device of a whole movable dismounting through brass module body and with compacting ring, O type circle and locking nut, seal body is bonding by low temperature glue and vacuum chamber outer wall, seal body and hold-down nut form fixed sealing device, described screen and seal body are by being welded to connect, by two kinds of sealing means, make vacuum seal effective, 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, by making without magnetic brass or red copper material, makes connector in magnetic resonance system, can not affect the uniformity in magnetic field, can be for the high-temperature superconductor radio-frequency coil of magnetic resonance imaging system; This connector can be selected fixed radiofrequency signal connector or detachable radiofrequency signal connector according to different demands; The characteristic impedance of this connector can be made different qualities impedance according to different demands.
Accompanying drawing explanation
Fig. 1 is the vacuum-packed structural representation without magnetic radiofrequency signal connector of stationary structure of the present invention.
Fig. 2 is the vacuum-packed structural representation without magnetic radiofrequency signal connector of demountable structure of the present invention.
Embodiment
Embodiment mono-.
As shown in Figure 1, vacuum-packed without magnetic radiofrequency signal connector, it comprises transport element and sealing device, transport element is radially through 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 comprised of seal body 4 and hold-down nut 5, described sealing device is by making 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 by low temperature glue and vacuum chamber outer wall 1, seal body 4 and hold-down nut 5 form fixed sealing device, be non-removable sealing device, seal body 4 radial positions are provided with contact hole 12, in contact hole 12, scribble fluid sealant 10, as AB glue or epoxy resin low temperature glue, seal body 4 has aperture at its axial location, coaxial line 2 is passed smoothly, coaxial line 2 adopts half steel wire, described screen 11 is connected together by soldered with seal body 4, contact with high temperature superconductor coil in magnetic resonance system as radio-frequency joint 3, other positions of its sealing device can not exert an influence to its vacuum seal and leak rate, make to seal leak rate and be less than 1.0*10
-10pa ﹒ m
3/ s.
Embodiment bis-.
As shown in Figure 2, vacuum-packed without magnetic radiofrequency signal connector, it comprises transport element and sealing device, transport element is radially through 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 smoothly, 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 peripheries be provided with by brass, formed contact the brass module body 9 that forms annular seal space with vacuum chamber outer wall, described sealing device is by making 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 ends, locking nut 8 is set in O type circle 7, compacting ring 6 and brass module body 9 tops, seal body 4 is radially through brass module body 9, and by compacting ring 6, O type circle 7 and locking nut 8 connect into an integral body with brass module body 9, facilitated 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.
Claims (6)
- One kind for vacuum-packed without magnetic radiofrequency 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.
- One kind for vacuum-packed without magnetic radiofrequency signal connector, it comprises transport element and sealing device, transport element is radially through 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 sealing with 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 with by brass, formed contact the brass module body (9) that forms annular seal space with vacuum chamber outer wall, seal body (4) is radially connected to the sealing device of a whole movable dismounting through 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 by low temperature glue and vacuum chamber outer wall (1), the sealing device that brass module body (9) and hold-down nut (5) form, described seal body (4), locking nut (8) and hold-down nut (5) are by making without magnetic brass or red copper material.
- One kind for vacuum-packed without magnetic radiofrequency signal connector, it comprises transport element and sealing device, transport element is radially through 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 comprise transport element sealing and with vacuum chamber outer wall (1) sealing, 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 by low temperature glue and vacuum chamber outer wall (1), seal body (4) and hold-down nut (5) form fixed sealing device, and described seal body (4) and hold-down nut (5) are by making without magnetic brass or red copper material.
- According to described in claim 2 or 3 for vacuum-packed without magnetic radiofrequency signal connector, it is characterized in that: the screen (11) of described coaxial line (2) and seal body (4) have formed the screen of transport element jointly, described screen (11) and seal body (4) are by being welded to connect.
- According to claim 2 for vacuum-packed without magnetic radiofrequency signal connector, it is characterized in that: described vacuum-packed without magnetic radiofrequency signal connector, be a kind of detachable vacuum-packed without magnetic radiofrequency signal connector.
- According to claim 3 for vacuum-packed without magnetic radiofrequency signal connector, it is characterized in that: described vacuum-packed a kind of distressed structure without magnetic radiofrequency 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103560353A true CN103560353A (en) | 2014-02-05 |
| CN103560353B 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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Cited By (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 |
Cited By (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 |
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|---|---|
| CN103560353B (en) | 2015-11-25 |
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