JPS61222210A - Gas cooling electromagnet coil apparatus - Google Patents

Abstract

PURPOSE:To provide an apparatus with excellent cooling effect without requiring any device necessary for water cooling, by overlapping alternately two kinds of coil units formed into a ring plate shape, and by forming cooling gas flowing pathes communicating from lower inlets to upper outlets in a ring frame for housing these coil units. CONSTITUTION:Spacers 13 are arrayed between upper and lower flanges 2, 3 and the neighboring coil units 6a, 6b, and between respective coil units 6a, 6b neighboring each other. The spacers 13 support the coil units in cooperation with entire peripheral supporters 11 and partial supporters 12 for supporting the inner periphery and outer periphery of each coil unit. A plural of cooling air inlets 14 are bored through the outer periphery of the lower flange 3 of the return frame 1 and a plural of cooling air outlets 15 are bored through the inner periphery of the upper flange 2. Accordingly, two kinds of the coil units 6a, 6b which are overlapped through the spacers 13 can define natural circulating pathes for cooling air, communicating from the lower inlets 14 to the upper outlets 15.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an electromagnetic coil device, and particularly to a gas-cooled electromagnetic coil device that is extremely effective for use in electromagnetic filter equipment.

[Background of the invention]

Electromagnetic coil device wire, contains a conductive wire wound around a magnetic material in a coil shape, and is used in transformers, electromagnets, etc.In the case of a transformer, two sets of conductive wire with different numbers of turns are wrapped around the magnetic material. A wire coil is wound, an alternating current is passed through one conductive wire coil, and the alternating current whose voltage is varied according to the turns ratio of the two sets of conductive wire coils is output from the other conductive wire; In the case of a reed-and-rear electromagnet, a direct current is passed through the conductive wire coil to make a magnetic body magnetized, and the magnetic attraction is utilized, and it is used, for example, by being incorporated into electromagnetic filter equipment.

As shown in FIG. 5, the electromagnetic filter equipment has an electromagnetic coil device surrounding the outer periphery of a filter tower 21 filled with a magnetic material 23 in the shape of a fiber, wool, or sphere. be.

The electromagnetic coil device has an upper part 7 and a lower part 2 which are on the same level as the upper pole piece 22 inside the filtration tower 21.
j'-piece 22' An electromagnetic filter 24 is disposed within a return frame l having a U-shaped cross section and consisting of a lower part 7 radiator 3 that has the same trail and an intermediate ring 4 that connects the upper and lower flanges 2.3. When direct current is passed through the electromagnetic coil 24, the upper part 4-Rubys 22 and the lower part? - Generates a magnetic field between the ruby beads 22' and the upper and lower pole pieces 22
The magnetic body 23 between the angles 22' and 22' becomes a magnet, and magnetic particles in the liquid, gas, or other object to be treated passing through the filtration tower 21 are magnetically attracted and subjected to temporary treatment. Electromagnetic coil 2 in operation of electromagnetic coil device
4 generates heat, so it is necessary to cool it, and a water-cooled electromagnetic coil device has already been developed to perform this cooling.

Briefly explaining an example of a water-cooled electromagnetic coil device, the electromagnetic coil device includes an upper flange 2. As shown in FIG. 6, there is an annular cavity formed by an annular return frame 1 having a U-shaped cross section and consisting of a lower flange 3 and an intermediate ring 4, and an inner cylinder 5 that closes the open inner circumference of the annular return frame 1. Depending on the scale of the electromagnetic filter, there are several to one coil unit 6 of water cooling type formed in a plate-shaped toroidal body.
It is constructed by stacking several pieces.

The coil unit 6 is made by winding an insulated conductor 7 made of a highly conductive metal having a circular or square cross section, such as a copper hollow wire, into a coil shape. As shown in the figure, the lower coil part starts from the terminal 8 at one end of the conductor 7 and is wound spirally from the outer periphery to the inner periphery, and then the lower coil part is wound spirally from the inner periphery to the outer periphery S. The upper coil part which is wound and ends at the other terminal 8' is formed into a plate-shaped toroidal body as a whole.

The terminal 8 of the coil unit 6 at the bottom position and the terminal 8' of the coil unit 6 at the top position are respectively the terminal 8' of the lower coil unit and the terminal of the upper coil unit between adjacent coil units. 8 are electrically connected to each other, and the insulated conductors 7 of a large number of coil units 6 constitute a series of electromagnetic pulleys connected in series with a constant winding direction.

Both ends of the insulated conductor 70 of each coil unit 6 are connected to a tape connector 31, 31' and an insulated tape 32, respectively.
The cooling water supplied from the cooling water bottle fPK is connected to the inlet main pipe 33 and the outlet main pipe 34 of the cooling water through the 7. Outlet main pipe 3 through insulation pipe 32
It flows to 4 and is designed to cool the coil eni and toro.

By the way, in the above-mentioned water-cooled electromagnetic coil device, in addition to the cooling water supply equipment including the cooling water tank, piping, valves, and cooling water pump, there is also a coil temperature control system for monitoring coil temperature rise due to insufficient cooling water flow. Monitoring equipment and water monitoring equipment are required to constantly monitor the water quality, as electrolytes dissolved and mixed into the cooling water will cause current leakage and reduce the efficiency of the electromagnetic coil. Electrical instrumentation equipment will also be required for

In an electromagnetic filter facility equipped with a water-cooled electromagnetic pull device that is accompanied by the various facilities mentioned above, the total facility cost will rise significantly if you also consider the site area of the incidental facilities, and in addition, the maintenance and upkeep costs for the various facilities will increase significantly. A problem arises in that the values are also weighted.

[Purpose of the invention]

The present invention was made in view of the above-mentioned problems in water-cooled electromagnetic coil devices, and its purpose is to improve cooling water tanks, piping, valves, cooling water ponders, etc. required for water cooling of electromagnetic coils. It does not require any equipment such as cooling water supply equipment, coil temperature monitoring equipment, cooling water quality monitoring equipment, and electrical instrumentation equipment to operate these equipment, and is made of gas cooling with excellent cooling effect. An object of the present invention is to provide an electromagnetic coil device.

[Summary of the invention]

The gas-cooled electromagnetic coil device according to the present invention is installed in an annular space formed by an annular frame having a U-shaped cross section and consisting of an upper flange, a lower flange, and an intermediate ring, and an inner cylinder that closes the open inner circumference of the annular frame. In an electromagnetic coil device formed by stacking a large number of coil units formed in a plate-like toroidal body, each of the upper and lower flanges is provided with an inlet or an outlet for cooling gas, and the coil unit has the following features: a coil unit having an outer diameter substantially equal to the inner wall diameter of the annular frame and an inner diameter larger than the outer diameter of the inner cylinder; an outer diameter smaller than the inner wall diameter of the annular frame and substantially equal to the outer diameter of the inner cylinder; There are two types of coil units, and these two types of coil units are stacked alternately with spacers interposed between them to form a cooling gas flow path communicating from the air inlet to the exhaust port, and each coil unit is stacked on the front and back surfaces of each coil unit. This feature is characterized by gas cooling over the entire area.

[Embodiments of the invention]

Although any gas can be used as the cooling gas in the gas-cooled electromagnetic coil device according to the present invention, a sufficient cooling effect can be achieved by using air.In that case, either forced ventilation type or natural ventilation type can be used. Can be adopted.

Hereinafter, an embodiment of the air cooling type using natural ventilation will be described in detail with reference to the drawings.

FIG. 1 is an external perspective view of a natural ventilation type air-cooled electromagnetic coil device according to the above-described embodiment of the present invention, which is configured to be incorporated into an electromagnetic filter;
It is a longitudinal cross-sectional view along the A-mu line. In the figure, 1 is the return frame, which is made of a magnetically permeable material and consists of upper and lower flanges 2° 3 in the shape of a nine-ring plate, and an intermediate ring 4 that is also cylindrical.
are connected to each other to form an annular frame with a U-shaped cross section. The open inner periphery of the return frame 1 is closed by a non-magnetically conductive inner cylinder 5.

In the annular cavity formed by the return frame 1 and the inner cylinder 5, two types of coil units 6m and 6b formed in a plate-shaped torus are spaced. 13 are alternately stacked and arranged.

As shown in FIG. 3, each of the coil units 6m and 6b is constructed by winding an insulated conductor 7 in two layers, upper and lower, in the same way as the coil unit 6 described in FIG. The coils are connected in series using terminals 8 and 8". However, in this example, the coils are
6m and 6b do not require water cooling, so the insulated conductor 7 is simply an insulated copper wire. In some cases, a hollow tube such as water-cooled tube may be used.

The coil unit lower a has an outer diameter approximately equal to the inner wall diameter of the intermediate ring 4 and an inner diameter larger than the outer diameter of the inner cylinder 5. It is supported by the inner wall, and its inner circumference is connected to the inner cylinder 5 via the partial support 12.
supported on the outer surface of the Nine, the above coil unit 6
b has an outer diameter smaller than the inner wall diameter of the intermediate ring 4 and an inner diameter approximately equal to the outer diameter of the inner cylinder 5, and its outer periphery is
2 is supported on the inner wall of the intermediate ring 4, and its inner circumferential portion is supported on the outer surface of the inner cylinder 5 via a full-circumference support 11.

Upper and lower flanges 2.3 and adjacent coil unit,
) (i between a or 6b and above and below each other Kla
A spacer 13 is arranged between the contact fb coil units 6m and 6b as shown in FIG. It supports the coil unit in cooperation with the body 12, prevents the coil unit from being deformed due to its own weight and magnetic field, and is useful for forming a flow path so that the cooling air flows uniformly in the radial direction.

A plurality of cooling air inlets 14 are provided at the outer periphery of the lower flange 3 of the return frame 1 , and a plurality of cooling air exhaust ports 15 are also provided at the inner periphery of the upper flange 2 . Two types of coil units arranged one on top of the other via a 6 m.

6bK forms a natural ventilation path for cooling air that communicates from the lower intake port 14 to the upper exhaust port 15.

, In the illustrated *tIAflvc, the spacer 13 is 8
They are arranged at equal division positions, and each division area is provided with an inlet 14 and an exhaust outlet 15, but the number of divisions can be determined arbitrarily.

Next, to explain the operation of the device of this embodiment configured as described above, the operation reporting coil unit 61#6b of the electromagnetic coil device generates heat due to the direct current applied to it, and the temperature of the air inside the return frame 1 increases. will rise. The heated air then rises and escapes from the exhaust port 15 in the upper part 7 and 2. As the heated air is exhausted, cooling air is naturally supplied into the return frame 1 from the inlet 14 of the lower flange, and the cooling air is supplied to the coil units 6m and 6b as shown by Φ in FIG. These coils flow along a flow path that is formed in a uniform manner.

The front and back surfaces of the tray are cooled with air in a natural ventilation manner.

In addition, in the case of forced air cooling, simply connect the air supply duct of the blower that sends cold air to the lower air inlet 14, or connect the air intake duct of the suction blower to the upper exhaust port 15. That's fine.

〔Effect of the invention〕

According to the present invention, two types of coil units formed in plate-like toric bodies are arranged in a stacked manner alternately, and the lower intake port communicates with the upper exhaust port within the annular frame that accommodates them. A cooling gas flow path is formed and each coil unit is configured to be cooled with gas over the entire front and back surfaces, so even natural ventilation can be expected to have a sufficient cooling effect on the electromagnetic coil device, so forced ventilation is used. Even if it does, it is only necessary to attach a small-capacity blower.

Furthermore, the gas cooling method of the present invention does not require any of the equipment required in a water-cooled electromagnetic coil device, such as cooling water supply equipment, coil temperature monitoring equipment, water quality monitoring equipment, and associated electrical instrumentation equipment. However, it is relatively easy to maintain and maintain, and it also has an excellent cooling effect.
Especially when applied to electromagnetic coil devices of electromagnetic filter equipment, its economical effects are remarkable.

Although the present invention has been specifically explained using an example of an electromagnetic coil installed with an electromagnetic filter, the present invention is not limited to this application, and is applicable to an electromagnetic coil of a gas cooling pot used in a transformer, a lifting magnet, a measuring device, etc. Can be used for equipment.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of one embodiment of the present invention, and FIG.
FIG. 3 is a perspective view showing one of the coil units used in the present invention, and FIG. 4 is a schematic diagram showing a large number of stacked coil units and the flow of cooling air. 5 is a vertical sectional view of the electromagnetic filter equipment, and FIG. 6 is an enlarged perspective view of one of the coil units used in the water-cooled electromagnetic coil device. Frame, 2...Top 7 U/J,
3...Lower 72 rings, 4...Middle ring, 5...
...Cylinder, 6.6m, 6b...Coil unit, 7...Insulated conductor, 8.8'...Terminal. 11... Full circumference support body, 12... Partial support body, 1
3...Spacer, 14...Inlet, 15...
-Exhaust port, 21...filtration tower. 2122'...Pole piece 1. 23... Magnetic material, 24... Electromagnetic coil,
31. 31'... Duplex connector, 32... Insulating tube, 33... Inlet main tube, 34... Outlet main tube, 35... Electromagnetic coil. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] In an annular space formed by an annular frame having a U-shaped cross section and consisting of an upper flange, a lower flange, and an intermediate ring, and an inner cylinder that closes the open inner circumference of the annular frame,
In an electromagnetic coil device formed by stacking a plurality of coil units formed in a plate-shaped torus, each of the upper and lower flanges is provided with an inlet or an outlet for cooling gas,
The coil unit includes a coil unit having an outer diameter approximately equal to the inner wall diameter of the annular frame and an inner diameter larger than the outer diameter of the inner cylinder, and an outer diameter smaller than the inner wall diameter of the annular frame and the inner cylinder. There are two types of coil units having an inner diameter that is approximately equal to the outer diameter, and these two types of coil units are stacked alternately via spacers to provide a cooling gas flow path that communicates from the air inlet to the exhaust port. form,
A gas-cooled electromagnetic coil device characterized in that each coil unit is gas-cooled over the entire front and back surfaces.