CN201402697Y

CN201402697Y - Helmholtz coil with arc mode square corners

Info

Publication number: CN201402697Y
Application number: CN2009201072603U
Authority: CN
Inventors: 张景鑫; 刘明非; 王学民; 史向前; 许亚峰; 马长生; 张瑞媛
Original assignee: Beijing Radiance Science & Technology Development Co
Current assignee: Beijing Radiance Science & Technology Development Co
Priority date: 2009-04-23
Filing date: 2009-04-23
Publication date: 2010-02-10
Anticipated expiration: 2019-04-23

Abstract

The utility model discloses a helmholtz coil of arc mode square corners, which comprises a pair of coil groove frames with identical geometric shapes, the coil groove frames are arranged in parallel,an interval between the coil groove frames is D equaling to 1.06a, each coil groove frame is a square, lengths of four edges of each coil groove frame are equal, and four corners of each coil groove frame are arcs with identical degrees. The pair of coil groove frames is wound with windings with identical number of turns via conducting wires with identical diameters along an identical direction, and the two windings are in series connection. The helmholtz coil not only is convenient for accurate structural positioning when assembling, but also is convenient for tightly winding the conducting wires. Besides, under an identical magnetic index, the helmholtz coil saves frame materials compared with an annular coil, and saves conducting wire materials compared with a square coil.

Description

Four jiaos of Helmholtz coils that become the arc pattern of square

Technical field

The utility model relates to a kind of field coil, relates in particular to a kind of square four jiaos of Helmholtz coils that become the arc pattern.

Background technology

Build high magnetic field space uniformly at present, adopting Helmholtz coil usually is that a pair of loop geometries is identical, umber of turn is identical, the coaxial coil of putting altogether, being connected in series.

In the prior art, circle and square pattern are arranged, if coil is an annular, then their coaxial space D equal radius R; If coil is a square, its coaxial space D=1.088a so, a be half of length.

There is following shortcoming at least in above-mentioned prior art: the annular pattern, and geometry location trouble when assembling the time is especially built up three-dimensional structure, and also when requiring R＞70cm, processing is difficulty, and waste of material is big; Square pattern, lax easily during winding, be difficult to closely, bigger with the theoretical principle error of line current.

The utility model content

The purpose of this utility model provide a kind of easy location and twine easily, square four jiao Helmholtz coils of becoming arc pattern less with the theoretical principle error of line current.

The purpose of this utility model is achieved through the following technical solutions:

Square four jiaos of Helmholtz coils that become the arc pattern of the present utility model comprise the coil groove frame that a pair of geometry is identical, and the outer rim of coil groove frame is provided with the groove that twines lead;

Each coil groove frame quadrate, four limits be isometric, four jiaos the degree arc such as be.

The technical scheme that provides by above-mentioned the utility model as can be seen, square four jiaos of Helmholtz coils that become the arc patterns described in the utility model because the identical coil groove frame of a pair of geometry, the outer rim of coil groove frame is provided with the groove that twines lead; Each coil groove frame quadrate, four limits be isometric, four jiaos the degree arc such as be.Not only easily the location, but also twine easily, less with the theoretical principle error of line current.

Description of drawings

Fig. 1 is the perspective view of the utility model specific embodiment;

Fig. 2 is the Facad structure schematic diagram of the utility model center line ring recess frame;

Fig. 3 is the side structure schematic diagram of the utility model center line ring recess frame.

Among the figure, 1, coil groove frame; 2, winding kernel of section position; 3, upper holder; 4, end fixed mount; 5, two windings in series wiring; 6, winding initiating terminal connects power supply one end; 7, winding ending end connects the power supply other end; 8, winding winding direction; 9, four arc angles of degree such as coil groove frame; 10, four isometric limits of coil groove frame; 11, curl the groove of lead.

Embodiment

Square four jiaos of Helmholtz coils that become the arc pattern of the present utility model, the embodiment that it is preferable such as Fig. 1, Fig. 2, shown in Figure 3 comprise the coil groove frame 1 that a pair of geometry is identical, the outer rim of coil groove frame 1 is provided with the groove 11 that twines lead.

Degree arcs such as each coil groove frame 1 quadrate, four limits are 10 isometric, be for four jiao 9.In the groove 11 of the winding lead of coil groove frame 1,, use same diameter wire, twine the winding of the identical number of turn along same direction.

A pair of coil groove frame 1 coaxial being arranged in parallel, its top and base can be fixing by upper holder 3 and end fixed mount 4 respectively.Space D=the 1.06a of a pair of coil groove frame 1, a are that one side of something of square coil is long, and D and a all measure with the center of the cross-sectional area of the winding of winding on the coil groove frame 1.

Two windings in series on a pair of coil groove frame 1 connect, and two ends connects power supply.

In the utility model, the structure location was easy to accurately when square structure was convenient to assemble; Be easy to closely when being convenient to twine lead at degree arc four jiaos.And under identical magnetics index, save frame material, save conductor material than square coil than making toroidal coil.

The above; it only is the preferable embodiment of the utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.

Claims

1, a kind of square four jiaos of Helmholtz coils that become the arc pattern is characterized in that comprise the coil groove frame that a pair of geometry is identical, the outer rim of coil groove frame is provided with the groove that twines lead;

2, square four jiaos of Helmholtz coils that become the arc pattern according to claim 1 is characterized in that, in the groove of the winding lead of described a pair of coil groove frame, along same direction, use same diameter wire, twine the winding of the identical number of turn.

3, square four jiaos of Helmholtz coils that become the arc pattern according to claim 2, it is characterized in that, coaxial being arranged in parallel of described a pair of coil groove frame, its spacing D=1.06a, a is that one side of something of square coil is long, and D and a are all with the center metering of the cross-sectional area of the winding on the described coil groove frame.

4, according to claim 1,2 or 3 described square four jiaos of Helmholtz coils that become the arc pattern, it is characterized in that two windings in series on the described a pair of coil groove frame connect, two ends connects power supply.

5, according to claim 1,2 or 3 described square four jiaos of Helmholtz coils that become the arc pattern, it is characterized in that the top of described a pair of coil groove frame and base are fixed by upper holder and end fixed mount respectively.