CN203521751U - Non-magnetic radiofrequency signal connector for vacuum sealing - Google Patents
Non-magnetic radiofrequency signal connector for vacuum sealing Download PDFInfo
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- CN203521751U CN203521751U CN201320549340.0U CN201320549340U CN203521751U CN 203521751 U CN203521751 U CN 203521751U CN 201320549340 U CN201320549340 U CN 201320549340U CN 203521751 U CN203521751 U CN 203521751U
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- sealing
- vacuum
- magnetic
- radiofrequency signal
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Abstract
The utility model relates to a non-magnetic radiofrequency signal connector for vacuum sealing. The connector comprises a conducting element and a sealing device, the sealing device comprises sealing for the conducting element, and a sealing member main body (4) radially crosses through a brass assembly main body (9) and is connected with a compression ring (6), an O-shaped ring and a locking nut (8) to form the sealing device which can be integrally and movably detached. The sealing device comprises sealing for the conducting element and sealing for a vacuum chamber outer wall (1), the sealing for the conducting element is performed through a contact hole (12) arranged in the sealing member main body (4), and the interior of the contact hole (12) is coated with sealing glue (10). Good vacuum sealing effects are achieved through the two sealing manners, the vacuum leak rate is less than 1.0*10<-10> Pa*m<3>/s, the non-magnetic radiofrequency signal connector is of simple design structure and low manufacturing cost, and is convenient to manufacture.
Description
Technical field
The utility model relate 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, utility model name is called: 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 problems to be solved in the utility model 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, brass module body and hold-down nut form sealing device, and 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 utility model 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, it is sealing device that seal body and hold-down nut form fixed, 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 further improvement of the utility model, 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 utility model provide 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 utlity model 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 the utility model stationary structure.
Fig. 2 is the vacuum-packed structural representation without magnetic radiofrequency signal connector of the utility model demountable structure.
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 (4)
- 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), brass module body (9) and hold-down nut (5) form sealing device, and 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 claim 1 and 2 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 1 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320549340.0U CN203521751U (en) | 2013-09-05 | 2013-09-05 | Non-magnetic radiofrequency signal connector for vacuum sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320549340.0U CN203521751U (en) | 2013-09-05 | 2013-09-05 | Non-magnetic radiofrequency signal connector for vacuum sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203521751U true CN203521751U (en) | 2014-04-02 |
Family
ID=50380628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320549340.0U Withdrawn - After Issue CN203521751U (en) | 2013-09-05 | 2013-09-05 | Non-magnetic radiofrequency signal connector for vacuum sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203521751U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560353A (en) * | 2013-09-05 | 2014-02-05 | 江苏美时医疗技术有限公司 | Non-magnetic RF signal connector for vacuum sealing |
-
2013
- 2013-09-05 CN CN201320549340.0U patent/CN203521751U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560353A (en) * | 2013-09-05 | 2014-02-05 | 江苏美时医疗技术有限公司 | Non-magnetic RF signal connector for vacuum sealing |
| CN103560353B (en) * | 2013-09-05 | 2015-11-25 | 江苏美时医疗技术有限公司 | A kind of for vacuum-packed without magnetic radio frequency signal connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140402 Effective date of abandoning: 20151125 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |