JPH06244023A - Electromagnet for magnetic field generation equipment - Google Patents

Abstract

PURPOSE:To allow resin to soak in the whole windings irrespective of their large-sized winding part or their sophisticated winding part. CONSTITUTION:A resin intake groove 10, which is connected to the outside of a winding part of a wire 2, is installed to the outside of a winding core 1 which is opposed to a winding part 3 of the wire 2, which makes it possible to secure a flow passage designed to introduce resin to the whole body of the winding part 3 and inject resin 4 easily. Therefore, when resin is injected by way of the resin intake groove 10, the resin 4 can be impregnated into the whole winding part even when the winding part 3 is large-sized or sophisticated in shape for example.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnet for a magnetic field generator used in, for example, a magnetic field generator for studying physical properties.

[0002]

2. Description of the Related Art A trace-track type electromagnet is used in a magnetic field generator used for studying physical properties.

As shown in FIGS. 6 and 7, this electromagnet for a magnetic field generator has a structure in which a large number of electric wires 2 are wound around a columnar core 1 having an elliptical plane cross section. The electric wire 2 is provided with an insulating coating 2b around the conductor portion 2a through which an electric current flows, which insulates the electric wires from each other and the core 1.

In such an electromagnet for a magnetic field generator, a resin 4 is injected into the winding portion 3 and a resin is injected into the winding portion 3 for the purpose of supporting the electric wires against the electromagnetic force acting on the electric wire 2 during excitation. The wires 4 are soaked in and the wires 2 are fixed to each other.

Further, in the case of an electromagnet, such as Nb ₃ Sn superconducting wire, which requires a high temperature heat treatment step of 600 ° C. or more after winding the wire 2 in order to generate a superconductor, a high temperature heat treatment of 600 ° C. or more is required. Since there is no material that shows good insulation characteristics even after that, a heat-resistant material such as glass fiber is used as the covering material, and after heat treatment, a resin (insulating material) 4 such as epoxy resin is injected into the winding portion 3 and dipped in the covering. The insulating coating 2b is formed by inserting it.

[0006]

By the way, in order to support the windings effectively, it is required that the resin 4 spreads to every corner of the winding portion 3. However, the injected resin is often not introduced in a predetermined manner. For this reason, the resin does not permeate the entire winding portion 3, and the function of adhesion or insulating layer formation performed by the resin 4 may not be fulfilled.
In particular, this is seen to occur as the winding portion 3 becomes larger, making it difficult to enlarge the winding portion 3 necessary to generate a strong magnetic field.

Moreover, the shape of the winding portion 3 is, on the contrary,
However, it is difficult to impregnate the resin 4 with the resin 4. For example, the winding portion 3 having a complicated shape cannot be designed, which is a factor that narrows the design range of the electromagnet.

The present invention has been made by paying attention to such a situation, and an object of the present invention is to make a resin, regardless of a large winding portion and a complicated winding portion,
An object of the present invention is to provide an electromagnet for a magnetic field generator that can penetrate the entire winding.

[0009]

In order to achieve the above object, an electromagnet for a magnetic field generator according to claim 1 has a surface of a winding core facing a winding portion of an electric wire, and a magnet outside the winding portion of the electric wire. There is a groove through which resin is introduced.

In the electromagnet for a magnetic field generator according to a second aspect of the invention, in order to allow the resin to soak into the entire winding portion by utilizing the winding collar, the surface of the winding collar facing the winding portion of the electric wire, There is a groove for resin introduction that communicates with the outside of the wire winding.

According to another aspect of the present invention, in the electromagnet for a magnetic field generator, the winding portion of the electric wire is used to allow the resin to soak into the entire winding portion. There is a space for introducing resin that communicates with the outside.

[0012]

According to the electromagnet for a magnetic field generator of the first aspect, the resin introduction groove provided on the surface of the winding core secures a flow path for guiding the resin to the entire winding portion. Moreover,
The resin is easy to inject (because the groove for introducing the resin reduces the resistance when injecting the resin).

Therefore, if the resin is injected through the groove for introducing the resin after winding the electric wire, even if the winding portion has a large size or a complicated shape, the winding is wound. It becomes possible to guide and impregnate the entire part with the resin.

According to the electromagnet for generating a magnetic field described in claim 2, the resin introducing groove provided on the surface of the winding collar guides the resin to the entire winding portion as in the case of claim 1. The flow path is secured and the resin is easy to inject.

Therefore, as in the case of the above-mentioned claim 1, even if it is a large-sized winding portion or a winding portion having a complicated shape, resin is introduced into the entire winding portion and impregnated. It becomes possible.

According to the electromagnet for generating a magnetic field of claim 3, the resin introducing space provided in the winding portion of the electric wire
As in the case of the first aspect, a flow path for guiding the resin to the entire winding portion is secured, and the resin is easy to inject.

Therefore, as in the case of the above-mentioned claim 1, even in the case of a large-sized winding portion or a winding portion having a complicated shape, resin is introduced into the entire winding portion and impregnated. It becomes possible.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention shown in FIGS.
A description will be given based on the embodiment.

However, in the drawings, the above-mentioned "prior art" is used.
The same parts as those of the racetrack-type electromagnet shown in FIGS. 6 and 7 described in the above section are designated by the same reference numerals and the description thereof will be omitted. In this section, different parts (main parts of the invention) will be described. I will do it.

FIG. 1 is a plan view of an electromagnet for a magnetic field generator to which the present invention is applied, for example, a racetrack type electromagnet, and FIG. 2 is a sectional view taken along line AA in FIG. ing.

Reference numeral 10 in the drawing denotes a resin introducing groove provided on the inner surface of the winding core 1 facing the winding portion 3. A plurality of grooves 10, for example, three grooves, are provided on the flat portions on both sides of the winding core 1, for a total of 6 grooves.
Individually provided.

The grooves 10 are all provided in the axial direction of the winding core 1. The openings at both ends of the groove 10 face the end surface of the winding core 1, and the groove end surface opening outside the winding portion is used as the resin introduction port 10a. Thereby, the resin 4 can be injected into the winding portion 3 from the outside of the winding portion using the groove 10.

According to such an electromagnet, when the electric wires 2 are fixed (supported) to each other, the resin 4 is injected from the resin introducing port 10a of each resin introducing groove 10 after the electric wire 2 is wound. The resin 4 flowing through 10 reaches the inner circumference of the winding portion 3 from the side opening, is guided to each winding layer, and impregnates the entire winding portion. That is, the resin introduction groove 10 secures a flow path for guiding the resin 3 to the entire winding portion in the winding portion 3. Moreover, by the groove 10 for introducing resin,
Since the resistance at the time of injecting the resin 4 decreases, it becomes easy to inject the resin 4. As a result, the resin 4 permeates the entire winding portion 3. As a result, the electric wires 2 can be securely fixed to each other and the insulating layer can be surely formed.

Therefore, if the resin 4 is injected from the resin introducing groove 10, no matter how large the winding portion 3 or any shape winding portion 3, the winding portion 3 It becomes possible to impregnate the whole with the resin. Therefore, it is possible to increase the size of the winding portion 3 which has been difficult, and it is possible to generate a strong magnetic field. Moreover, the magnetic field generation range can be expanded. In addition, since the resin 4 can be impregnated even in the winding part 3 having a complicated shape, the design range of the electromagnet can be expanded. FIG. 3 shows a second embodiment of the present invention.

In this embodiment, an electromagnet in which a wire 2 is wound around a winding core 1 having winding collars 1a at both ends is used. By utilizing the winding collar 1a of the electromagnet, the resin 4 is applied to the entire winding portion 3. It was made to soak. That is, in this embodiment, not the core 1 but the winding collar 1a is provided with the groove 10 for introducing the resin.

Specifically, each winding collar 1 facing the winding portion 3
A plurality of resin introducing grooves 10 are radially provided on the inner surfaces of a and 1a. The outer peripheral end of each of the resin introducing grooves 10 is open to the outside on the outer peripheral end side of each of the winding collars 1a, 1a, and the groove end surface serves as a resin introducing port 10a. As a result, the resin 4 can be injected from the outside of the winding portion into the inside of the winding portion 3 as in the first embodiment.

In the resin introducing groove 10 as well, by injecting the resin 4 from the resin introducing port 10a, the resin 4 flowing in the groove 10 is guided to each winding layer from both sides of the winding portion 3. Therefore, it becomes possible to impregnate the entire winding portion with the resin 4. 4 and 5 show a third embodiment of the present invention. In this embodiment, instead of the core 1 and the winding collar 1a,
The winding portion 3 is utilized to allow the resin 4 to soak into the entire winding portion 3. That is, in this embodiment,
A void 11 is provided in the winding portion 3 so that the resin 4 can be impregnated into the entire winding portion 3.

Specifically, the annular space 11 is wound by winding a comb-shaped spacer 11a as shown in FIGS. 5 (a) and 5 (b) when the electric wire 2 is wound around the winding core 1. A plurality of groove-shaped voids 11 along the axial direction are formed inside the line portion 3 concentrically with the winding core 1. And each void 1
One end of 1 is open at the side of the winding portion 3 where the winding collar 1a is not present, and forms a resin introducing port 10a. As a result, the resin 4 can be injected from the outside of the winding portion into the inside of the winding portion 3 as in the first and second embodiments.

Even in the space 11 for introducing the resin, the resin 10 is injected from the resin introducing port 10a to form the groove 10
Since the resin 4 flowing through is guided to each winding layer from both sides of the void 11, that is, from the inside of the winding portion 3, it is possible to impregnate the entire winding portion with the resin 4.

Of course, the above-mentioned structure of injecting resin from the inner peripheral portion, the side portion, and the inside of each winding portion 3 is not limited to the applied electromagnet without a winding brim, both-sided brim electromagnet, and one-sided brim electromagnet. It may be applied to the electromagnet. Further, the present invention is
It goes without saying that the present invention can be applied to electromagnets having any shape of coil without depending on the above-mentioned coil-shaped electromagnets.

[0031]

As described above, according to the first to third aspects of the invention, the resin is applied to the entire winding regardless of the large winding portion and the complicated winding portion. It is possible to make it soak. Therefore, it becomes possible to generate a strong magnetic field. In addition, the magnetic field generation range can be expanded, and the design range of the electromagnet can be expanded.

[Brief description of drawings]

FIG. 1 is a plan view showing an electromagnet for a magnetic field generator according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a sectional view showing an electromagnet for a magnetic field generator according to a second embodiment of the present invention.

FIG. 4 is a sectional view showing an electromagnet for a magnetic field generator according to a third embodiment of the present invention.

FIG. 5A is a front view showing a spacer for forming a void according to the embodiment. (B) is also a side view.

FIG. 6 is a plan view showing a conventional electromagnet for a magnetic field generator.

FIG. 7 is a sectional view taken along line BB in FIG.

[Explanation of symbols]

1 ... Winding 1a ... Winding collar
2 ... Electric wire 3 ... Winding part 4 ... Resin
10 ... Groove 11 ... Void

Claims (3)

[Claims] 1. An electromagnet for a magnetic field generator, comprising winding a wire around a winding core and fixing the wires to each other with a resin, wherein the surface of the winding core of the electric wire facing the winding portion of the wire is An electromagnet for a magnetic field generator, which is provided with a groove for introducing resin, which communicates with the outside of the winding portion. 2. An electromagnet for a magnetic field generator, which comprises winding a wire around a winding core having a winding collar at its end and fixing the wires together with a resin, wherein the winding is opposed to a winding portion of the wire. An electromagnet for a magnetic field generating device, characterized in that a groove for introducing resin is provided on the surface of the collar so as to communicate with the outside of the winding portion of the electric wire. 3. An electromagnet for a magnetic field generator, which comprises winding a wire around a winding core and fixing the wires to each other with a resin, wherein the wire is connected to the outside of the wire inside the winding part of the wire. An electromagnet for a magnetic field generator, which is characterized in that a void is provided.