CN205193260U - A hug closely double -deck plane RF coil of formula for composite insulator detects - Google Patents
A hug closely double -deck plane RF coil of formula for composite insulator detects Download PDFInfo
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- CN205193260U CN205193260U CN201520833745.6U CN201520833745U CN205193260U CN 205193260 U CN205193260 U CN 205193260U CN 201520833745 U CN201520833745 U CN 201520833745U CN 205193260 U CN205193260 U CN 205193260U
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Abstract
The utility model discloses a hug closely double -deck plane RF coil of formula for composite insulator detects, including front subcoil and reverse side subcoil, the inner of front subcoil and reverse side subcoil is used for connecting matching circuit, the front subcoil from interior to exterior in a plane form according to the anticlockwise coiling, the reverse side subcoil forms according to the anticlockwise coiling to interior outside by in another plane, front subcoil and reverse side subcoil are parallel and make the two be the mirror symmetry setting relatively, form the space between the two, front subcoil outer end and reverse side subcoil outer end link to each other through the lead wire, through this space block live the composite insulator full skirt and make the front subcoil and the reverse side subcoil is hugged closely and with the RF coil fastening on composite insulator. The utility model discloses the produced RF magnetic field degree of consistency is good, can strengthen radio frequency magnetic field intensity, the utility model discloses can block fixedly with the composite insulator edge, make the coil form with composite insulator to combine closely, stable structure relatively.
Description
Technical field
The utility model relates to a kind of radio-frequency coil, particularly relates to a kind of close contact double layer planar radio-frequency coil detected for composite insulator.
Background technology
Nuclear magnetic resonance is, under the effect of material atom nuclear magnetic moment outside magnetic field, energy level splitting occurs, and produces the physical phenomenon of energy level transition under the effect of external RF field.Since from nineteen forty-six, the people such as American scientist Bloch, Purcell finds nuclear magnetic resonance absorption phenomenon, nuclear magnetic resonance technique is obtained for unprecedented development in the field such as Wave Spectrum, medical imaging, greatly promoted the progress of human society.
The nuclear magnetic resonance equipment of using NMR technology comprises high-field nuclear magnetic resonance equipment and low-field nuclear magnetic resonance equipment.Common high-field nuclear magnetic resonance equipment, such as nuclear magnetic resonance spectrometer, medical magnetic resonance imager etc. have the inferior positions such as bulky, heavy, poor mobility, and the application in its Site Detection at actual sample (the real-time monitoring to patient's state of an illness) is restricted; In addition, the sample of high-field nuclear magnetic resonance equipment must be placed in there is a certain size closed magnet chamber in can be measured, this makes high-field nuclear magnetic resonance can not carry out Non-Destructive Testing to the large sample with arbitrary shape.And low-field nuclear magnetic resonance equipment is open, portable with it, the characteristic that can measure the sample with arbitrary shape, compensate for the deficiency of high-field nuclear magnetic resonance equipment, become the advanced subject of nuclear magnetic resonance technique research gradually.
No matter be high-field nuclear magnetic resonance equipment, or low-field nuclear magnetic resonance equipment, in nuclear magnetic resonance, radio-frequency (RF) magnetic field produces by radio-frequency coil.Radio-frequency coil has the effect exciting and receive NMR signal concurrently, under radio-frequency pulse effect, namely trigger the H core generation magnetic resonance of characteristic frequency in sample, and receives in trigger pulse closedown the NMR signal sensed afterwards.According to nuclear magnetic resonance principle, the radio-frequency (RF) magnetic field B1 that radio-frequency coil produces will meet following requirement: the radio-frequency (RF) magnetic field B1 (1) produced is orthogonal with the static magnetic field B0 that magnet structure produces at target area needs; (2) radio-frequency (RF) magnetic field will be tried one's best evenly, resonates to excite more sample; (3) the magnetic field intensity of radio-frequency (RF) magnetic field will be tried one's best greatly, the NMR signal received is tried one's best large.
For the magnet structure of its static magnetic field B0 produced perpendicular to magnet surface, radio-frequency coil adopts figure of eight planar radio frequency coils usually, and the radio-frequency (RF) magnetic field B1 produced to make it is orthogonal with the static magnetic field B0 that magnet structure produces in target area.But owing to adopting figure of eight structure, therefore there is the defect that magnetic field homogeneity is poor and magnetic field intensity is less of the radio-frequency (RF) magnetic field B1 produced in target area in this figure of eight planar radio frequency coils.
Utility model content
The purpose of this utility model is to provide the close contact double layer planar radio-frequency coil detected for composite insulator that a kind of structure is simple, cost is low, magnetic field homogeneity is good, magnetic field intensity is large, the radio-frequency (RF) magnetic field B1 that the utility model produces in target area perpendicular to coil surface, the magnet structure that can be parallel to magnet surface with static magnetic field B0 with the use of.
Above-mentioned purpose of the present utility model realizes by the following technical solutions: a kind of close contact double layer planar radio-frequency coil detected for composite insulator, it is characterized in that: it comprises front subcoil and reverse side subcoil, the inner of described front subcoil and reverse side subcoil is used for matching connection circuit, described front subcoil forms according to counter clockwise direction coiling from the inside to the outside in a plane, described reverse side subcoil forms according to counter clockwise direction coiling from outside to inside in another plane, described front subcoil parallel with reverse side subcoil and relatively make the two for specular setting, and form space between, the outer end of front subcoil is connected by lead-in wire with the outer end of reverse side subcoil, engage the full skirt of composite insulator by this space and make that front subcoil and reverse side subcoil are close to and radio-frequency coil is fastened on composite insulator.
Principle of work of the present utility model is: the reverse side subcoil of front subcoil and corresponding below around to identical, the radio-frequency (RF) magnetic field direction of generation is consistent, can strengthen radio-frequency (RF) magnetic field intensity.If positive current flows into from the coil port (the inner) of front subcoil, in the subcoil of front, the flow direction of electric current is counterclockwise; The lead-in wire of electric current through between pros and cons spiral winding enters reverse side subcoil, and in reverse side subcoil, the flow direction of electric current is also that counterclockwise the radio-frequency (RF) magnetic field that electric current produces at front subcoil and reverse side subcoil winding is vertical paper upwards.
The radio-frequency (RF) magnetic field good evenness that the utility model produces, front subcoil is identical with the coil winding-direction of the reverse side subcoil of corresponding below, the radio-frequency (RF) magnetic field direction produced is consistent, radio-frequency (RF) magnetic field intensity can be strengthened, the shape of double-layer coil can be blocked with composite insulator edge and be aided with other fixed form and be fixed on composite insulator by coil simultaneously, coil and composite insulator is formed and combines closely and metastable structure.
As a kind of preferred implementation of the present utility model, described lead-in wire is respectively perpendicular to front subcoil and reverse side subcoil, and described lead-in wire is close to the edge of composite insulator umbrella skirt.
As a kind of embodiment of the present utility model, the distance between described front subcoil and reverse side subcoil is 0.2 ~ 5.0mm.
As a kind of embodiment of the present utility model, described radio-frequency coil is integrated coiling and forms.
As another kind of embodiment of the present utility model, described front subcoil and reverse side subcoil individually coiling form, one end of described lead-in wire is connected with the outer end of front subcoil, and the other end of described lead-in wire is connected with the outer end of reverse side subcoil, forms described radio-frequency coil.
As a kind of embodiment of the present utility model, described front subcoil and reverse side subcoil respectively by adhesive tape be bonded in composite insulator umbrella skirt make it on the front and back combine closely with composite insulator.
Compared with prior art, the utility model has following significant technique effect:
(1) the radio-frequency (RF) magnetic field good evenness that produces of the utility model, front subcoil is identical with the coil winding-direction of the reverse side subcoil of corresponding below, and the radio-frequency (RF) magnetic field direction of generation is consistent, can strengthen radio-frequency (RF) magnetic field intensity.
(2) the shape of double-layer coil can be blocked with composite insulator edge and be aided with other fixed form and be fixed on composite insulator by coil, coil and composite insulator is formed and combines closely and metastable structure.
(3) the utility model structure is simple, cost is low, is easy to realize, and is suitable for extensively promoting and being suitable for.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is vertical view of the present utility model;
Fig. 2 is perspective view of the present utility model;
Fig. 3 is one of the utility model structural representation of being fixed on the full skirt of composite insulator;
Fig. 4 is the structural representation two that the utility model is fixed on the full skirt of composite insulator.
Embodiment
As shown in figures 1-4, it is a kind of close contact double layer planar radio-frequency coil detected for composite insulator of the utility model, employing copper conductor is made, copper conductor live width is 0.1mm, line thickness is 0.1mm, it comprises front subcoil 1 and reverse side subcoil 2, extension line can be drawn from front subcoil with the coil port of reverse side subcoil to be connected with match circuit, concrete size can be determined by actual conditions, front subcoil 1 forms according to counter clockwise direction coiling from the inside to the outside in a plane, reverse side subcoil 2 forms according to counter clockwise direction coiling from outside to inside in another plane, front subcoil 1 parallel with reverse side subcoil 2 and relatively make the two for specular setting (front subcoil 1 is identical with the size of reverse side subcoil 2), and form space between, the outer end of front subcoil 1 is connected by lead-in wire 4 with the outer end of reverse side subcoil 2, engage the full skirt of composite insulator 3 by this space and make that front subcoil 1 and reverse side subcoil 2 are close to and radio-frequency coil is fastened on composite insulator 3, specifically front subcoil 1 and reverse side subcoil 2 respectively by adhesive tape be bonded in composite insulator 3 full skirt make it on the front and back combine closely with composite insulator 3, also other fixed form can be adopted.
Lead-in wire 4 is respectively perpendicular to front subcoil 1 and reverse side subcoil 2, and lead-in wire 4 is close to the edge of composite insulator 3 full skirt.Distance between front subcoil 1 and reverse side subcoil 2 is 0.2 ~ 5.0mm, selects the length (distance namely between front subcoil 1 and reverse side subcoil 2) of the lead-in wire be applicable to according to the thickness of composite insulator 3 full skirt.Radio-frequency coil can be integrated coiling and form, also can be front subcoil 1 and reverse side subcoil 2 individually coiling form, one end of lead-in wire 4 is connected with the outer end of front subcoil 1, and the other end of lead-in wire 4 is connected with the outer end of reverse side subcoil 2, forms radio-frequency coil.
Principle of work of the present utility model is: the reverse side subcoil of front subcoil and corresponding below around to identical, the radio-frequency (RF) magnetic field direction of generation is consistent, can strengthen radio-frequency (RF) magnetic field intensity.If positive current flows into from the coil port (the inner) of front subcoil, in the subcoil of front, the flow direction of electric current is counterclockwise; The lead-in wire of electric current through between pros and cons spiral winding enters reverse side subcoil, and in reverse side subcoil, the flow direction of electric current is also that counterclockwise the radio-frequency (RF) magnetic field that electric current produces at front subcoil and reverse side subcoil winding is vertical paper upwards.
The shape of the utility model front subcoil and reverse side subcoil is not limit, and can be square, circular etc.; The material of coil can also adopt other conductive materials such as aluminium.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (5)
1. the close contact double layer planar radio-frequency coil detected for composite insulator, it is characterized in that: it comprises front subcoil and reverse side subcoil, the inner of described front subcoil and reverse side subcoil is used for matching connection circuit, described front subcoil forms according to counter clockwise direction coiling from the inside to the outside in a plane, described reverse side subcoil forms according to counter clockwise direction coiling from outside to inside in another plane, described front subcoil parallel with reverse side subcoil and relatively make the two for specular setting, and form space between, the outer end of front subcoil is connected by lead-in wire with the outer end of reverse side subcoil, engage the full skirt of composite insulator by this space and make that front subcoil and reverse side subcoil are close to and radio-frequency coil is fastened on composite insulator.
2. the close contact double layer planar radio-frequency coil detected for composite insulator according to claim 1, is characterized in that: described lead-in wire is respectively perpendicular to front subcoil and reverse side subcoil, and described lead-in wire is close to the edge of composite insulator umbrella skirt.
3. the close contact double layer planar radio-frequency coil detected for composite insulator according to claim 2, is characterized in that: the distance between described front subcoil and reverse side subcoil is 0.2 ~ 5.0mm.
4. the close contact double layer planar radio-frequency coil detected for composite insulator according to claim 3, is characterized in that: described radio-frequency coil is integrated coiling and forms.
5. the close contact double layer planar radio-frequency coil detected for composite insulator according to claim 3, it is characterized in that: described front subcoil and reverse side subcoil individually coiling form, one end of described lead-in wire is connected with the outer end of front subcoil, the other end of described lead-in wire is connected with the outer end of reverse side subcoil, forms described radio-frequency coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520833745.6U CN205193260U (en) | 2015-10-23 | 2015-10-23 | A hug closely double -deck plane RF coil of formula for composite insulator detects |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520833745.6U CN205193260U (en) | 2015-10-23 | 2015-10-23 | A hug closely double -deck plane RF coil of formula for composite insulator detects |
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| CN205193260U true CN205193260U (en) | 2016-04-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242224A (en) * | 2015-10-23 | 2016-01-13 | 广东电网有限责任公司东莞供电局 | Close-contact type double layer plane radio frequency coil used for composite insulator detection |
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- 2015-10-23 CN CN201520833745.6U patent/CN205193260U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242224A (en) * | 2015-10-23 | 2016-01-13 | 广东电网有限责任公司东莞供电局 | Close-contact type double layer plane radio frequency coil used for composite insulator detection |
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