CN201229820Y - Novel magnetic field coil - Google Patents
Novel magnetic field coil Download PDFInfo
- Publication number
- CN201229820Y CN201229820Y CNU2008200676546U CN200820067654U CN201229820Y CN 201229820 Y CN201229820 Y CN 201229820Y CN U2008200676546 U CNU2008200676546 U CN U2008200676546U CN 200820067654 U CN200820067654 U CN 200820067654U CN 201229820 Y CN201229820 Y CN 201229820Y
- Authority
- CN
- China
- Prior art keywords
- coil
- magnetic field
- outside
- hai muhuoci
- hai
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
The utility model discloses a new magnetic field coil, belonging to technical field of magnet coil, which consists of two sets of mutually embedded Helmholtz coils in coaxial and concentric mode. The magnetic field direction produced inside two sets of Helmholtz coils is opposite. The leakage field intensity at certain point outside the coil is in inverse proportion to the third power of the distance of the point from the center of the coil due to adoption of special radius ratio and turn ratio, thereby greatly decreasing leakage field and facilitating weak magnetic test.
Description
Technical field
The utility model patent relates to the smaller field coil in a kind of external leakage magnetic field.
Background technology
The function of traditional field coil produces needed magnetic field at hub of a spool exactly, but coil also to coil outside produces magnetic field when the portion space produces magnetic field within it.The magnetic field that coil externally produces is called reveals magnetic field.If in carrying out some weak magnetic survey experiments, these are revealed magnetic field and can the Other Instruments or the equipment of coil outside be exerted an influence, especially be placed on when experimentizing in magnetic shielding cylinder or the magnetic shield room when coil, revealing magnetic field can be with the outer wall magnetization of magnetic shielding cylinder or magnetic shield room.For modal Hai Muhuoci coil, be inversely proportional in certain any leakage magnetic field intensity of coil outside and this point distance to hub of a spool.
Summary of the invention
The purpose of this utility model provides a kind of smaller novel field coil in magnetic field of revealing, and any leakage magnetic field intensity and this point of certain of coil outside is inversely proportional to the cube of the distance of hub of a spool.
The purpose of this utility model is achieved in that a kind of novel field coil, its outside is a pair of larger-size Hai Muhuoci coil, its nested inside the less Hai Muhuoci coil of a pair of size, two cover Hai Muhuoci coils are coaxial mutually, the coil geometric center overlaps mutually.The reversal connection of connecting mutually of the less Hai Muhuoci coil of Hai Muhuoci coil that external dimensions is bigger and inside dimension.The radius ratio and the turn ratio of outside Hai Muhuoci coil and inner Hai Muhuoci coil should meet following condition:
Its turn ratio is: outside the N: in the N=and 2:1;
Its radius ratio is: outside the R: in the R=and 1.414:1.
The utility model is because the structure that has adopted inner-outer coil to compensate for mutually, makes certain any leakage magnetic field intensity of coil outside and this point be inversely proportional to the cube of the distance of hub of a spool, reduced leakage magnetic field greatly.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, the version that the utility model adopts two cover Hai Muhuoci coil combination to form: its outside is a pair of larger-size Hai Muhuoci coil 1, its nested inside coaxial mutually, the coil geometric center of the less Hai Muhuoci coil of a pair of size 2, two cover Hai Muhuoci coils overlap mutually.
The Hai Muhuoci coil 2 series connection reversal connection mutually that outside bigger Hai Muhuoci coil 1 and inside dimension are less makes that the magnetic direction that they produced is opposite, compensates for mutually.
The magnetic field that two cover Hai Muhuoci coils are produced is opposite, and its number of turn and radius relationship must satisfy following two conditions simultaneously:
Its turn ratio is: N
Outward: N
In=2:1;
Its radius ratio is: R
Outward: R
In=1.414:1.
Claims (3)
1. novel field coil, it is characterized in that: its outside is a pair of larger-size Hai Muhuoci coil, its nested inside the less Hai Muhuoci coil of a pair of size, two cover Hai Muhuoci coils are coaxial mutually, the coil geometric center overlaps mutually.
2. the reversal connection of connecting mutually of a kind of novel field coil according to claim 1, the less Hai Muhuoci coil of Hai Muhuoci coil that external dimensions is bigger and inside dimension.
3. a kind of novel field coil according to claim 1, the radius ratio and the turn ratio of its outside Hai Muhuoci coil and inner Hai Muhuoci coil should meet following condition:
Its turn ratio is: outside the N: in the N=and 2:1;
Its radius ratio is: outside the R: in the R=and 1.414:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200676546U CN201229820Y (en) | 2008-06-06 | 2008-06-06 | Novel magnetic field coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200676546U CN201229820Y (en) | 2008-06-06 | 2008-06-06 | Novel magnetic field coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201229820Y true CN201229820Y (en) | 2009-04-29 |
Family
ID=40634762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200676546U Expired - Fee Related CN201229820Y (en) | 2008-06-06 | 2008-06-06 | Novel magnetic field coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201229820Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105070455A (en) * | 2015-07-20 | 2015-11-18 | 中国船舶重工集团公司第七一〇研究所 | Non-moment solenoidal magnetic field coil with radial openings |
| CN106291007A (en) * | 2015-06-02 | 2017-01-04 | 中国科学院物理研究所 | A kind of magnetic shielding device |
| CN111641273A (en) * | 2020-06-09 | 2020-09-08 | 西安交通大学 | Wireless power transmission system with redundant receiving coil |
-
2008
- 2008-06-06 CN CNU2008200676546U patent/CN201229820Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291007A (en) * | 2015-06-02 | 2017-01-04 | 中国科学院物理研究所 | A kind of magnetic shielding device |
| CN106291007B (en) * | 2015-06-02 | 2019-07-30 | 中国科学院物理研究所 | A kind of magnetic shielding device |
| CN105070455A (en) * | 2015-07-20 | 2015-11-18 | 中国船舶重工集团公司第七一〇研究所 | Non-moment solenoidal magnetic field coil with radial openings |
| CN105070455B (en) * | 2015-07-20 | 2017-03-22 | 中国船舶重工集团公司第七一〇研究所 | Non-moment solenoidal magnetic field coil with radial openings |
| CN111641273A (en) * | 2020-06-09 | 2020-09-08 | 西安交通大学 | Wireless power transmission system with redundant receiving coil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104748661B (en) | Differential transformer displacement transducer | |
| CN101793492B (en) | Low-noise magnetostrictive displacement sensor | |
| CN208835852U (en) | Rotor and magneto | |
| CN201229820Y (en) | Novel magnetic field coil | |
| CN106026465A (en) | Motor rotor, motor and compressor | |
| CN103647125A (en) | Unijunction microstrip circulator or microstrip isolator with magnetic shielding case | |
| JP2012163584A5 (en) | ||
| CN103487224B (en) | A kind of double magnetic source magnetic structure of magneto angle vibration table | |
| CN102360781A (en) | Separable transformer with magnetic core in nested structure | |
| JP2015103772A (en) | Non-contact rotation transmission device | |
| CN105070455B (en) | Non-moment solenoidal magnetic field coil with radial openings | |
| CN204303687U (en) | A kind of electromagnetic relay | |
| MY136315A (en) | Motor | |
| CN204497003U (en) | Induction structure | |
| CN205141856U (en) | Rotor assembly and motor possessing same | |
| CN203721864U (en) | Single-junction microstrip isolator with magnetic shield | |
| CN202332310U (en) | Shielded magnetic fluid sealing device | |
| CN202713109U (en) | Voice-coil motor used for driving photographic lens | |
| CN204577220U (en) | Winding construction, transformer and transmitter | |
| CN109450219B (en) | Axially magnetized moving-magnetic proportional electromagnet | |
| CN206379781U (en) | A kind of lightweight compact octagon quadrupole motor | |
| CN205544643U (en) | Motor stator is towards piece | |
| CN202601372U (en) | Magnetic leakage transformer | |
| CN202796307U (en) | Coupled inductor | |
| CN219267458U (en) | Anti-radiation common-differential mode inductor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090429 Termination date: 20130606 |