JPH0246007Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a bobbin for an electromagnet, which has a double-walled flange projecting from a winding core, and allows cooling water to circulate inside the bobbin.

[Conventional technology]

It is well known to use a cooling device in order to prevent overheating of the winding coils of large electromagnets operated by passing large currents through them. For example, electromagnets for controlling fuel rods in nuclear power plants require large currents, are small and lightweight, and use cooling devices to limit the volume occupied.

Conventionally, in order to cool these electromagnets, a direct cooling method has been used in which a pipe made of a conductive material such as copper is wound to form a coil, and cooling water is circulated through the pipe. In addition, an indirect cooling method is also used in which a copper wire is wound to form a coil, a cooling pipe is closely attached to the outside of the coil, and cooling water is circulated into the pipe. However, although the direct cooling method can increase the current density per unit area, the device is large and heavy, and its use is restricted in limited spaces, so the indirect cooling method is generally used.

[Problem that the invention attempts to solve]

In order to run large currents and operate stably for long periods of time, such as in nuclear power plants, conventional equipment is generally large and heavy, has a limited storage volume, making it difficult to use, and has low cooling effectiveness. There is.

[Means for solving problems]

The present invention eliminates such drawbacks of the conventional method by protruding flanges from the upper and lower end surfaces of the cylindrical winding core, and by protruding a plurality of intermediate flanges at intermediate positions that are composed of double side walls and through which cooling water flows back. This is an electromagnet bobbin made of a metal material with good thermal conductivity.

[Effect]

A winding wire is wound between the flanges that protrude from the upper and lower end surfaces on the outside of the winding core of the bobbin, and the flanges that protrude in the middle, and a current is passed through them as a coil. Cooling water is circulated through the middle flanges, and the winding A magnetic pole is placed in the center of the core to create an electromagnet.

[Embodiment] As shown in FIG. 1, an embodiment of the electromagnet bobbin of the present invention has an upper end flange 2 and a lower end flange 3 projecting from the upper end surface and lower end surface of the winding core 1, respectively. and at least one intermediate tsuba 4 between the lower end tsuba 3
The bobbin is integrally formed from a metal material that is a good conductor of heat. As shown in FIGS. 1 and 2, this intermediate flange 4 is covered with upper and lower surfaces 5, 6 and an outer circumferential wall 7, and is partitioned concentrically with partition walls 8 to form a water conduit 9 inside, and the outer circumference A water supply pipe 10 and a drain pipe 11 are attached to the wall 7 to supply cooling water.
A partition wall 13 is provided on the water supply pipe 10 and drain pipe 11 on the water supply channel 9 side, across the water supply channel 9. The winding core 1, upper end collar 2, lower end collar 3, and intermediate collar 4 are integrally machined from a metal material with good thermal conductivity such as copper to form a bobbin.

An electromagnet bobbin is formed by winding a winding wire between the upper end flange 2 or the lower end flange 3 and the intermediate flange 4 of the bobbin to form a coil 12. Note that the bobbin is sufficiently insulated with an insulating material, etc., and then the coil 12 is
wind it.

Now, the coil 12 is energized and the water supply pipe 10 is turned on.
The coil 12 is indirectly cooled by supplying cooling water and discharging it from the drain pipe 11 through the conduit 9 in the intermediate collar 4.

[Effect of idea]

As described above, according to the present invention, since the entire bobbin is made of a metal with good thermal conductivity, the coil is sufficiently cooled, and a small and efficient electromagnetic bobbin can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view passing through the center of an embodiment of the electromagnet bobbin of the present invention, and FIG. 2 is a lateral plan view taken along the center line A-A' of the intermediate collar in FIG. In addition, 1: winding core, 2: upper end tsuba, 3: lower end tsuba,
4: intermediate flange, 7: outer peripheral wall, 8: partition wall, 9: water conduit, 10: water supply pipe, 11: drain pipe, 12: coil, 13: partition wall.

Claims (1)

[Scope of utility model registration request] Upper end collar 2 and lower end collar 3 from both end surfaces of the cylindrical winding core 1
and a concentric water conduit 9 inside and a water supply pipe 10 and a drain pipe 11 connected to the water conduit 9 on the outside between the upper end flange 2 and the lower end flange 3.
A bobbin for an electromagnet, characterized in that an intermediate flange 4 provided with a flange 4 is integrally formed of a good thermal conductor projecting from the winding core 1.