JPS5940508A - Electromagnetic induction apparatus - Google Patents

Abstract

PURPOSE:To recycle the heat from a magnet coil and utilize the heat as a heat source by a method wherein a tank of an electromagnetic induction apparatus is separated into a core chamber and a winding chamber by a heat insulating wall and a cooling system is connected to each chamber and the heat is recycled by a coolant. CONSTITUTION:The inside of a tank 11 is separated by a heat insulating wall 12 into a coil chamber 14 in which a transformer 13 is stored and a core chamber 16.Each chamber is filled with insulating oil 30 and is made oil tight each other. A coolant 20 is circulated between the coil chamber 14 and a heat exchanger 60 by a pump 71 and keeps the temperature approximately not more than 80 deg.C. A coolant 30 is circulated between the core chamber 16 and a heat exchanger 80 and exchanges heat with a heating medium 90. The chamber 16 and 14 are separated thermally by a heat insulating material 50 covering the wall 12 and the temperature of the coolant 20 rises independently and the heat is recycled efficiently. With this constitution, the heat from loss generated by the core can be recycled through the coolant efficiently without being limited by the heat resistant temperature of the insulation of the magnet coil, thereby the utilization of the heat lost at the electromagnetic induction apparatus can be realized.

Description

[Detailed description of the invention] The present invention relates to electromagnetic induction equipment.

Loss heat generated in electromagnetic induction equipment such as transformers is carried by refrigerant to a heat exchanger, where it is exchanged with heat and dissipated into the atmosphere or cooling water, but in recent years, energy prices have increased significantly. Therefore, attempts are being made to recover and effectively use the lost heat as a heat source for refrigerators and heat pumps, or as a heat source for heating.

However, since the transformer and accelerator windings are insulated with insulating paper or mineral oil, which does not have high heat resistance, the cooler fan motor or Since it controls the refrigerant,
The problem is that the rising temperature of the refrigerant is low enough to recover the lost heat with an exhaust heat recovery device and use it as a heat source for refrigerators and heat pumps, or as a heat source for heating, and that it is not practical as it is. be.

This invention was made in view of the above-mentioned conventional problems, and has a structure in which the inside of the tank is divided into an iron core chamber and a winding chamber by a heat-generating bulkhead, and each chamber is connected to a separate cooling system. By doing so, it is an object of the present invention to provide an electromagnetic induction device that can recover heat through a refrigerant that can be used as a heat source for air conditioning, heating, etc.

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, 10 is a transformer, and 11 is a tank of the transformer.
5, and an iron core chamber 16 containing the windings 20 and 20, each containing a winding refrigerant (insulating oil, etc.) 20 and an iron core refrigerant (insulating oil).
30 is filled. Iron chamber 1 of transformer tank 11
The wall portions 11a and 11b surrounding the core chamber 16 are covered with a heat insulating material 40, and furthermore, the wall surface that may come into contact with the refrigerant 20 of the core chamber 16, that is, the surface of the partition wall 12 is covered with a heat insulating material 50. 6
0 is a cooler, which connects the winding chamber 1 through pipes 70 and 70.
It is connected to 4. 11 is a ring pump for the refrigerant 20. A heat exchanger for an 80Fi exhaust heat recovery device,
It is connected to the core chamber 16 of the transformer 10 by pipes 72 and 72, and controls the exchange of heat between the refrigerant 30 and the heat medium 90. The heat medium 90 circulates between the heating device and the hot water supply device (none of which are shown) and the heat exchanger 80 through pipes 73 and 73.

This is a ring pump for 74Vi refrigerant 30.

17 is a lead, and 18 is a bushing.

In this configuration, the refrigerant 20 circulates between the winding chamber 14 and the cooler 60 to cool the transformer winding 13.
In order to prevent the temperature from rising beyond a certain limit (approximately 80C) based on the maximum allowable temperature of the insulator that insulates the transformer winding 13, a cooling system including a cooler 60 and a cooling ring 1 is provided. Temperature controlled.

On the other hand, the refrigerant 30 is fed to the core chamber 16-heat exchanger 80, where it gives heat to the heating medium 90 and lowers its temperature.
will be returned to. This refrigerant 30 has a heat resistance of 1
Only the transformer core 15, which is higher than that of the above-mentioned insulator No. 3, is cooled, and the core chamber 16 and the winding chamber 14 are separated by the partition wall 1.
2 is insulated by the heat insulating material 50 on the surface of the transformer 10, and is not affected by the cooling system of the transformer winding 13. Therefore, the temperature rises independently of the refrigerant 20, and depending on the load condition of the transformer 10, the temperature rises above the above-mentioned certain limit. The temperature exceeds the high temperature trap and enters the heat exchanger 80.

The loss heat absorbed by the refrigerant 30 is transferred to the heat insulating material 5 as described above.
The presence of zero prevents the refrigerant 20 from depriving the refrigerant, and the heat insulating material 40 prevents it from dissipating into the atmosphere, so it can be efficiently recovered.

Although the above explanation has been made regarding a transformer, similar effects can be obtained by applying the present invention to a reactor.

As described above, according to the present invention, the inside of the tank is thermally isolated between the iron core side and the winding side, and each side is cooled by an independent cooling system, thereby reducing heat loss generated by the iron core. Since heat can be efficiently recovered through the refrigerant without being limited by the heat resistance of the winding insulator, it is possible to recover and utilize the lost heat of electromagnetic induction equipment.

[Brief explanation of drawings]

The figure is a sectional view of an embodiment of the guidance device according to the invention. 11... Tank 12... Partition wall 14... Winding chamber 18... Iron core chamber 40... Insulating material 50...・Insulating material In the figures, the same reference numerals indicate the same or equivalent parts.

Claims (2)

[Claims] (1) An electromagnetic induction device characterized in that the inside of a tank is divided into an iron core chamber and a winding chamber by a partition wall having heat insulating properties, and each chamber is connected to a different cooling system. (2) The electromagnetic induction device according to claim 1, wherein a wall portion of the iron core chamber that is exposed to the atmosphere is covered with a heat insulating material.