JP2001210529A - Oil-immersed electrical apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce structural strength of an oil-immersed transformer tank. SOLUTION: By using elasticity of a bag body 9, made of rubber provided with opening parts 11 and 12, a transformer body 13, a board 17, and a suspension rod 18 are accommodated in bag body 9, the opening parts 11 and 12 are suspended at interconnecting openings 5 and 6 of a cover plate 4, and the transformer body 13 is suspended at the cover plate 4 by a suspension mechanism 21. An oil-immersed transformer 1 is configured through steps, where in a state that the transformer body 13 is not accommodated in a tank 2, the interior of the bag body 9 is evacuated via a coupling member 27 and injection of insulating oil 30 into the bag body 9 is conducted. Next, the bag body 9, that accommodates the transformer body 13 and the insulating oil 30 or the like, is accommodated in a tank part 3, and then a tank 2 is formed. Thus since the evacuation is performed only in the bag body 9, the tank 2 will not require a structure which has vacuum resistance strength.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil-filled electrical device in which insulation oil is more impregnated into a device body by vacuuming.

[0002]

2. Description of the Related Art FIG. 12 shows a conventional structure of, for example, an oil-filled transformer 200 as an oil-filled electric device. The transformer main body 201 is housed inside the tank 202 and fixed to the bottom thereof. The inside of the tank 202 is filled with insulating oil 203 for cooling the transformer main body 201. A communication port 2 provided on the upper wall of the tank 202
A valve 205 is mounted on 04, and the inside of the tank 202 is sealed by closing the valve 205. The reinforcing member 2 is provided on the side wall and the upper wall of the tank 202.
06 is attached. Thus, the oil-filled transformer 2
00 is configured.

[0003]

Conventionally, when the insulating oil 203 is lubricated into the tank 202 in which the transformer body 201 is housed, the transformer oil 20 of the insulating oil 203 is used.
In order to increase the impregnation property of the tank 1, the inside of the tank 202 is evacuated and then lubricated. Therefore, the reinforcing member 206 is provided in the tank 202 so as to withstand the vacuum pressure.
However, the reinforcing member 206 is not necessary except for evacuation, and mounting the reinforcing member 206 on the tank 202 increases the size and weight of the tank 202 and increases costs. There was a problem.

[0004] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an oil-filled electric device whose tank structure does not require vacuum pressure resistance.

[0005]

According to a first aspect of the present invention, there is provided an oil-filled electrical device comprising: a device main body; a tank having a communication port; a suspending mechanism for suspending the device main body in the tank; A bag body that is arranged so as to form a device accommodating chamber surrounding the device main body and the hanging mechanism, the opening portion is hung by the tank, and is communicated to the outside through the communication port; And an insulating oil housed in the bag body.

[0006] According to such a configuration, since the vacuum is drawn and the insulating oil is injected only into the bag as the equipment accommodating chamber, the tank does not need to have a structure having vacuum resistance. The structural strength can be reduced. Therefore, the size and weight of the tank can be reduced, and the manufacturing cost of the oil-filled electric device can be reduced.

According to a second aspect of the present invention, there is provided an oil-filled electric device, wherein the opening of the bag is suspended from a communication port of the tank. According to such a configuration, before the device main body is housed in the tank, the inside of the bag as the device housing chamber can be evacuated and the insulating oil can be injected.

According to a third aspect of the present invention, there is provided an oil-filled electrical device, wherein a vent is provided in the tank. According to such a configuration, after the device main body is housed in the tank, the inside of the bag as the device housing chamber can be evacuated and the insulating oil can be injected.

According to a fourth aspect of the present invention, there is provided an oil-filled electrical device, wherein a plurality of openings are provided in the bag, a plurality of communication ports are provided in the tank, and the opening of the bag is a communication port of the tank. It is characterized by being suspended. According to such a configuration, by providing a plurality of openings of the bag body and a plurality of communication ports of the tank, the suspending mechanism, the electric wires, and the like attached to the device body are dispersed and attached to the tank inner wall or to the outside of the tank. Can be taken out. Thereby, the degree of freedom of the position where the suspension mechanism, the electric wire and the like are attached is increased, and the working efficiency can be increased. Further, by suspending the bag body with a plurality of openings of the bag body, the tension of the suspended bag body can be dispersed, and the suspension force can be increased.

According to a fifth aspect of the present invention, there is provided an oil-filled electric device, wherein the device accommodating chamber is formed by a part of an inner wall of the tank and a bag. According to such a configuration, a part of the inner wall of the tank is shared with the inside of the bag body to form the device accommodating chamber, so that the suspension mechanism and the electric wires mounted on the device main body are mounted on the inner wall of the tank. You can also. This simplifies the work of attaching the suspension mechanism and wiring the wires,
Manufacturing costs can be reduced.

According to a sixth aspect of the present invention, there is provided the oil-filled electrical device, wherein the communication port is provided with a valve or a stopper. According to such a configuration, the inside of the bag body is sealed with a valve or a stopper, so that the insulating oil can be prevented from contacting the outside air.
Deterioration of the insulating oil due to contact with the outside air can be suppressed.

According to a seventh aspect of the present invention, there is provided an oil-filled electric device, wherein a valve or a stopper is provided in the vent. According to such a configuration, since the inside of the tank can be sealed with a valve or a stopper, even if the bag is torn and the insulating oil leaks out of the bag, it is possible to prevent the insulating oil from leaking out of the tank. Can be. Further, in this case, by sealing the inside of the tank, the insulating oil can be prevented from contacting the outside air.

In the oil-filled electric device according to the present invention, a radiator is provided in the tank through a communication pipe, a connection port is provided in the bag body, and the connection port of the bag body is fixed to the communication pipe. It is characterized by having been done. According to such a configuration, a radiator can be attached to the tank, so that the cooling effect of the device main body can be enhanced by cooling the insulating oil with the radiator during operation of the device main body.

In the oil-filled electrical device according to the ninth aspect, a valve or a stopper is provided in the communication port, and the ventilation port is provided in a position above the upper wall or the side wall of the tank and not in contact with the outer wall of the bag body. It is characterized by the following. According to such a configuration, the ventilation hole is provided in the upper wall or the upper side wall of the tank where the outer wall of the bag does not contact, so that a large amount of insulating oil can be injected into the inside of the bag. In addition, by absorbing the thermal expansion and contraction of the insulating oil due to the temperature fluctuation of the insulating oil by the expansion and contraction of the bag body, the same function as the conservator can be provided.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment A first embodiment in which the present invention is applied to an oil-immersed transformer will be described below with reference to FIGS. FIG. 1A and FIG. 2 show the configuration of the oil-filled transformer 1. In FIG. 1A and FIG. 2, the tank 2 includes a tank main part 3 made of a steel plate having a rectangular container shape, and a lid plate 4 made of a steel plate attached to an upper opening of the tank main part 3. Have been. A communication port 5 is formed at the center of the cover plate 4.
, A plurality of communication ports 6 are formed, and circular seats 7 and 8 are formed in each of the communication ports 5 and 6.

The inside of the rubber bag 9 is a device accommodation room 10.
An opening 11 is provided in the upper central portion, and a plurality of openings 12 corresponding to the communication port 6 are provided around the opening 11. In this case, the diameter of the opening 11 is set to be significantly larger than the diameter of the opening 12 as described later.

The transformer main body 13 as an equipment main body includes an iron core 14.
The primary and secondary winding 15 is wound around the
The lead wires derived from the primary and secondary windings 15 are:
Wire bundles 16 are formed by being insulated from each other and bundled. The transformer body 13 is fixed to the center of the upper surface of the base plate 17. The lower ends of the plurality of suspension rods 18 are attached to the base plate 17 by welding so as to correspond to the communication ports 6.

The transformer body 13, the base plate 17 and the suspension rod 18 are accommodated in the bag 9. Hanging rod 1
A screw portion 18 a is formed at the upper end of 8, and the screw portion 18 a is inserted into the opening 12 of the bag 9 and protrudes above the cover plate 4. A communication port 6 is provided on the upper surface of the lid plate 4.
A suspending member 19 is attached by screwing so as to face the suspending member 19.
Are fixed by a nut 20, and the suspension mechanism 21 is configured as described above.

As shown in FIG. 3, a rubber packing 22 and a steel fixing ring 23 having the same diameter as the outer diameter of the seat 8 are fitted into the upper end of the suspension rod 18. . Further, the opening 12 of the bag 9 is inserted through the communication port 6, and the opening edge 12 a is expanded so as to cover the seat 8. Then, the fixing ring 23 is fixed to the seat 8 by the bolt 24 via the packing 22 and the opening edge 12a, and the bag body 9 is suspended from the cover plate 4 in this manner. An adhesive is applied between the hanging bar 18 and the packing 22 and the fixing ring 23, whereby the opening 12 is sealed.

As shown in FIG. 4, the wire bundle 16 and the opening 11 of the bag 9 passing therethrough are connected to the central communication port 5 of the cover plate 4.
Is taken out of the lid plate 4 and its opening edge 11a
Are arranged to cover the seat 7.

The packing 25 is made of rubber and has a ring shape having the same diameter as the outer diameter of the seat 7.
It is made of steel and has the same shape as the packing 25. The connecting member 27 is made of steel, has a central portion in the shape of a ridge-shaped cylinder, and has connecting rings 28 at both ends. The connecting ring 28 has the same diameter as the outer diameter of the seat 7. The packing 25, the fixing ring 26 and the connecting member 27 are provided on the upper surface of the opening edge 11a on the upper surface of the seat 7.
And the connection ring 28 is fixed to the seat 7 by bolts 29, and the bag 9 is suspended from the cover plate 4 in this manner. The wire bundle 16 passes through the inside of the connecting member 27 and is taken out of the cover plate 4.

In this embodiment, the opening 11 which is set to be significantly larger than the opening 12 of the bag body 9 is further expanded by utilizing the elasticity of the rubber. The transformer body 13, the base plate 17, and the suspension rod 18 are accommodated in the bag body 9 through the opening 11, and thereafter, the base plate 17 is suspended by the lid plate 4 by the suspension mechanism 21. ,
The openings 11 and 12 of the bag 9 are connected to the communication ports 5 and 6 of the lid plate 4.
In a state where the transformer body 13 is not accommodated in the tank 2, the inside of the bag body 9 is evacuated and the insulating oil 30 is injected into the inside of the bag body 9 via the connecting member 27. Will be

Thus, as shown in FIG. 1B, the inside of the bag 9 is filled with the insulating oil 30. And FIG.
As shown in (a), the bag body 9 containing the transformer main body 13 and the insulating oil 30 and the like is housed in the tank main part 3 and the cover plate 4
Are bolted to the tank main part 3 to form the oil-immersed transformer 1.

As described above, according to the present embodiment, only the inside of the bag 9 is evacuated by using the inside of the bag 9 as the equipment accommodating chamber 10 so that the insulating oil 30 is injected only into the bag 9. Therefore, the tank 2 does not need to have a structure having vacuum resistance, and the structural strength can be reduced. Therefore, the size and weight of the tank 2 can be reduced, and the manufacturing cost of the oil-filled transformer 1 can be reduced.

Further, by providing a plurality of openings 11 and 12 of the bag body 9 and a plurality of communication ports 5 and 6 of the tank 2, the suspension mechanism 21 and the wire bundle 16 mounted on the transformer body 13 are provided.
Can be mounted in a dispersed manner. Thereby, the degree of freedom in the position where the suspension mechanism 21 and the wire bundle 16 are attached is increased, and the working efficiency can be increased. Moreover, the bag 9
By suspending the bag body 9 with a plurality of openings 11 and 12, the tension of the suspended bag body 9 can be dispersed,
The lifting force can be increased.

(Second Embodiment) Hereinafter, a second embodiment in which the present invention is applied to an oil-immersed transformer will be described with reference to FIG. FIG. 5 shows a configuration of the oil-immersed transformer 31.
The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. Only different parts will be described below.

In FIG. 5, the tank 32 comprises a tank main part 3 and a cover plate 33. The cover plate 33 is a first
In the same manner as in the embodiment, a communication port 5 and a plurality of communication ports 6 are formed, and a ventilation port 34 is formed on the communication port 5 side. A circular seat 35 is also formed on the ventilation port 34. Is formed.

As in the first embodiment, the openings 11 and 12 of the bag 9 accommodating the transformer body 13, the base plate 17 and the hanging rod 18 are connected to the communication ports 5 and 6
The transformer body 13 is also suspended by the lid plate 33 by the suspension mechanism 21. In addition, electric wire bundle 1
6 is taken out of the cover plate 33 through the inside of the connecting member 27.

The bag 9 in which the transformer body 13 and the like are accommodated
Is housed in the tank main part 3 and the lid plate 33 is
With the transformer body 13 housed inside the tank 32 in this manner, the connecting member 2
Vacuum evacuation of the inside of the bag body 9 and injection of the insulating oil 30 into the inside of the bag body 9 are carried out via 7, thereby forming an oil-immersed transformer 31.

As described above, according to the second embodiment, the same effect as that of the first embodiment can be obtained. In particular, by providing the cover plate 33 with the ventilation hole 34, the ventilation between the inside and the outside of the tank 32 can be achieved. It is possible to perform the evacuation of the inside of the bag body 9 and the injection of the insulating oil 30 into the inside of the bag body 9 in a state in which the bag body 9 housing the transformer body 13 is housed inside the tank 32. And workability can be improved.

Third Embodiment Hereinafter, a third embodiment in which the present invention is applied to an oil-immersed transformer will be described with reference to FIG. FIG. 6 shows a configuration of the oil-immersed transformer 36.
The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. Only different parts will be described below.

In FIG. 6, the tank 37 is composed of a tank main part 38 and a cover plate 39. Tank main part 38
Has the same shape as the tank main part 3 shown in the first embodiment, and has a vent 40 formed in the upper part of one side wall, and a circular seat 41 is formed in the vent 40. Is formed. The cover plate 39 has a steel reinforcing member 42 mounted on the upper surface so as to withstand the vacuum pressure strength, and a terminal 43 for electrically connecting the upper surface and the bottom surface of the cover plate 39 at the center. Is hermetically sealed. Also, this terminal 43
A communication port 44 is formed on the side of the communication port 4.
4, a circular seat 45 is formed.

The lower end of the suspension bar 46 is attached to the base plate 17 by welding in the same manner as in the first embodiment, and the upper end of the suspension bar 46 is attached to the bottom surface of the lid plate 39 by welding. Thus, the suspension mechanism 47 is configured, and the transformer body 13 is suspended on the cover plate 39. Further, the wire bundle 16 is connected to the terminal 43 from the bottom side of the cover plate 39.

The rubber bag 48 has one opening 49 in the upper part.
3. The base plate 17 and the hanging rod 46 are accommodated in the bag body 48. The bag 48 is accommodated in the tank main part 38, and its opening edge 49 a is
Are arranged so as to cover the upper surface of the upper end of the. A rubber packing 50 formed along the upper surface of the upper end portion of the tank main portion 38 is covered on the upper surface of the opening edge portion 49a.
Is covered. The cover plate 39 is bolted to the tank main part 38, and thus the bag body 48 is
Is suspended from the lid plate 39.

At this time, the device accommodating chamber 51 is formed by the inside of the bag body 48 and the inner wall of the lid plate 39 which is a part of the inner wall of the tank 37. Then, in a state where the transformer main body 13 is housed inside the tank 37 in this way, the inside of the bag body 48 is evacuated and the bag body 48 is
Insulation oil 30 is injected into the inside, and the oil-immersed transformer 36
Is configured.

As described above, according to the third embodiment, the bag 4
8 is provided with one opening 49, and this opening 49 is
9 and the tank main part 38 so as to be sandwiched between them.
9 and the tank main part 38 are hermetically joined, so that the inner wall of the cover plate 39 is shared with the inner wall of the bag body 48 and
1 was formed. Thereby, the transformer body 13
The hanging mechanism 47 and the wire bundle 16 attached to the
(Tank 37) can be attached to the inner wall. Therefore, the work of attaching the suspension mechanism 47 and the work of wiring the wire bundle 16 are simplified, and the manufacturing cost can be reduced.

The primary and secondary windings 1 of the transformer body 13
The lead wires derived from 5 may be connected to the terminals 43 without being bundled to form the wire bundle 16. Further, the tank main portion 38 does not need to have a structure having vacuum resistance, and the structural strength can be reduced. Therefore, the size and weight of the tank 37 can be reduced, and the manufacturing cost of the oil-filled transformer 36 can be further reduced.

(Fourth Embodiment) Hereinafter, a fourth embodiment in which the present invention is applied to an oil-immersed transformer will be described with reference to FIG. FIG. 7 shows a configuration of the oil-filled transformer 52. The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. Only different parts will be described below.

In FIG. 7, the tank 53 comprises the tank main part 3 and a cover plate 54. The lid plate 54 has a large-diameter communication port 55 formed at the center thereof, a plurality of large-diameter communication ports 56 formed around the communication port 55, and each of the communication ports 55 and 56 has , Circular seat 57
And 58 are formed.

Transformer main body 13, base plate 17, and suspension rod 46
The openings 11 and 12 of the bag 9 in which the
5 and 56, and the opening edges 11a and 12a are arranged so as to be expanded and cover the seats 57 and 58. On the upper surfaces of the opening edges 11a and 12a,
Rubber packings 59 and 60 formed in a ring shape having the same diameter as the outer diameter of the seats 57 and 58 are covered.

The cover plates 61 and 62 are made of steel and have a seat 5.
7 and 58 are formed in a disk shape having the same diameter as the outer diameter,
A reinforcing member 63 made of steel is mounted on the upper surface so as to withstand vacuum pressure strength. A terminal 43 for electrically connecting the upper surface and the bottom surface of the cover plate cover 61 is hermetically mounted at a central portion of the cover plate cover 61, and a communication port 64 is formed on the side thereof. A circular seat 65 is formed in the communication port 64.

The cover plates 61 and 62 are placed on the upper surfaces of the packings 59 and 60, and are fixed to the seats 57 and 58 by bolts.
Is suspended from the lid plate 54. Further, at this time, the device housing chamber 66 is formed by the inside of the bag body 9 and the inner walls of the cover plate covers 61 and 62 which are a part of the inner wall of the tank 53.

The upper end of the suspension rod 46 is attached to the bottom surface of the cover plate cover 62 by welding, thus constituting the suspension mechanism 67. Also, the wire bundle 16
It is connected to the terminal 43 from the bottom side of the cover plate cover 62. Then, similarly to the case shown in FIG. 1B of the first embodiment, in a state where the transformer main body 13 is not housed in the tank 53, the vacuum inside the bag body 9 is communicated through the communication port 64. Pulling and injection of the insulating oil 30 into the bag body 9 are performed. Thereafter, the bag body 9 containing the transformer body 13 and the insulating oil 30 and the like is housed in the tank main part 3, and the oil-immersed transformer 52
Is configured.

As described above, according to the fourth embodiment, the cover plate 5
4, cover plate covers 61 and 62 are provided.
And 62 are shared by the inside of the bag 9 so as to form the device accommodation room 66. As a result, the same effect as that of the third embodiment can be obtained.
By providing 2, the area of the structure having vacuum resistance can be reduced, so that the manufacturing cost of the oil-filled transformer 52 can be further reduced.

(Fifth Embodiment) A fifth embodiment in which the present invention is applied to an oil-immersed transformer will be described below with reference to FIG. FIG. 8 shows a configuration of the oil-immersed transformer 68. The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. Only different parts will be described below.

As shown in FIG. 8, the oil-filled transformer 68 is similar to the connecting member 27 in the oil-filled transformer 1 shown in the first embodiment.
Is replaced by a valve 69. The valve 69 is made of steel, has a central portion in the shape of a bulge, and has a connecting ring 70 at both ends. The connecting ring 70 has the same diameter as the outer diameter of the seat 7. A rotatable knob 71 is provided on the outside of the ridge portion. By rotating the knob 71, a valve (not shown) provided inside the ridge portion is rotated in conjunction with the knob. And performs the opening and closing function of the valve 69. Further, a hole (not shown) for passing only the wire bundle 16 is formed in the center of the valve body, and the wire bundle 16 is passed through the hole and taken out. In addition, this hole and the wire bundle 16
An adhesive is applied between them, and they are hermetically joined.

In the fifth embodiment, as in the first embodiment, the valve 69 is opened to evacuate the inside of the bag body 9 while the equipment housing chamber 10 is not housed inside the tank 2. The insulating oil 30 is injected into the bag 9. Further, a nitrogen gas 72 is sealed in a gas-phase space inside the bag body 9 that is not filled with the insulating oil, and the inside of the bag body 9 is sealed by closing the valve 69. Then, the bag body 9 in which the transformer body 13 and the insulating oil 30 and the like are housed is housed in the tank main part 3 to constitute an oil-immersed transformer 68.

As described above, according to the fifth embodiment, the communication port 5 is provided with the valve 69 so that the inside of the bag 9 is evacuated and the bag 9 is evacuated.
The insulating oil 30 was injected into the inside. Thereby, the inside of the bag body 9 as the device accommodating chamber 10 can have a sealed structure, and the valve 69 is closed to prevent the insulating oil 30 from coming into contact with the outside air. Deterioration can be suppressed. In addition, by sealing the nitrogen gas 72 that does not easily react with the insulating oil 30 in the gas phase space inside the bag body 9 that is not filled with the insulating oil 30, the effect of suppressing the deterioration of the insulating oil 30 can be further improved. .

(Sixth Embodiment) Hereinafter, a sixth embodiment in which the present invention is applied to an oil-immersed transformer will be described with reference to FIG. FIG. 9 shows a configuration of the oil-immersed transformer 73. The same parts as those in FIG. 5 are denoted by the same reference numerals, and description thereof will be omitted. Only different parts will be described below.

As shown in FIG. 9, the oil-filled transformer 73 is connected to the connecting member 2 of the oil-filled transformer 31 shown in the second embodiment.
A valve 69 is mounted in place of 7, and a valve 75 is also mounted on the ventilation port 34 with a rubber packing 74 interposed therebetween. The valve 75 has the same configuration as the valve 69, but has no hole in the valve body.

In the sixth embodiment, similarly to the second embodiment, the valves 69 and 75 are opened in a state in which the equipment accommodating chamber 10 is accommodated in the tank 32 and the inside of the bag 9 is opened. The evacuation and injection of the insulating oil 30 into the bag body 9 are performed.
Further, a nitrogen gas 72 is sealed in a gas-phase space in which the insulating oil 30 is not filled inside the bag body 9, and the inside of the bag body 9 is sealed by closing the valve 69. Further, by closing the valve 75, the inside of the tank 32 is also hermetically closed, and thus the oil-filled transformer 73 is configured.

As described above, according to the sixth embodiment, the valve 75 is provided also in the vent 34. As a result, the fifth
The same effect as that of the embodiment can be obtained. In particular, since the inside of the tank 32 can be sealed by the valve 75 of the ventilation port 34, even if the bag 9 is torn and the insulating oil 30 leaks to the outside of the bag 9, , Can be prevented from leaking out of the tank 32. Further, in this case, by sealing the inside of the tank 32, the insulating oil 30 can be prevented from contacting the outside air, so that the deterioration of the insulating oil 30 due to the contact with the outside air can be suppressed.

(Seventh Embodiment) Hereinafter, a seventh embodiment in which the present invention is applied to an oil-immersed transformer will be described with reference to FIG. FIG. 10 shows a configuration of the oil-immersed transformer 76. The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. Only different parts will be described below.

In FIG. 10, the tank 77 is composed of a tank main part 78 and a cover plate 4. Tank main part 78
Has the same shape as the tank main part 3 shown in the first embodiment, and has a vent 79 formed in the upper part of one side wall, and a circular seat 80 is formed in the vent 79. Have been. In addition, communication holes 81 are formed in the upper and lower portions of the other side wall facing one side wall of the tank main portion 78, and a cylindrical communication pipe 82 is joined to these communication holes 81 by welding. ing. Further, a steel connection ring 83 having an opening having the same diameter as the outer diameter of the communication pipe 82 is welded to the distal end of the communication pipe 82.

The inside of the rubber bag 84 is placed in the equipment accommodation room 8.
5, an opening 86 is provided in the upper central portion, and a plurality of openings 87 corresponding to the communication port 6 of the cover plate 4 are provided around the opening 86. At this time, the diameter of the opening 86 is set to be significantly larger than the diameter of the opening 87 for the same reason as in the first embodiment. The side of the bag body 84 has two connection ports 88.

In the same manner as in the first embodiment, the openings 86 and 87 of the bag body 84 in which the transformer body 13, the base plate 17, and the suspension rod 18 are accommodated are connected to the communication ports 5 and 6
The transformer body 13 is also suspended by the cover plate 4 by the suspension mechanism 21. In addition, the electric wire bundle 16
Are taken out of the cover plate 4 through the inside of the connecting member 27.

The bag body 84 containing the transformer body 13 and the insulating oil 30 and the like is housed in the tank main part 78, and the cover plate 4 is bolted to the tank main part 78. And
The connection opening 88 of the bag body 84 is inserted through the communication pipe 82 and is taken out to the outside. The connection opening edge 8 is formed on the front end surface of the rubber packing 89 covered on the front end surface of the connection ring 83.
8 a is expanded so as to cover the packing 89.

The radiator 90 is made of steel, has a rectangular parallelepiped shape, has a plurality of radiating fins 91 mounted therein, and the outer frame is formed to have a structure having vacuum resistance. A communication pipe 92 having the same shape as the communication pipe 82 is joined to one side wall of the radiator 90 at the same height as the communication pipe 82 mounted on the tank 77. 9
The connecting ring 9 having the same shape as the connecting ring 83
3 are joined. Further, a packing 94 having the same shape as the packing 89 is covered on the distal end surface of the connection ring 93.

The connecting ring 83 of the tank 77 and the connecting ring 93 of the radiator 90 are located between
9. The tank 77 and the radiator 90 are hermetically bonded together with bolts and nuts so as to sandwich the connection edge 88a and the packing 94.

In the seventh embodiment, the radiator 90 is hermetically joined to the tank 77, and the connection opening 8 is connected to the bag 84.
8, the connection port 88 is sandwiched between the communication pipes 82 and 92 so that the inside of the bag body 84 communicates with the inside of the radiator 90. Then, in a state where the transformer main body 13 is housed inside the tank 77, the inside of the bag body 84 and the inside of the radiator 90 are evacuated via the connecting member 27, and the inside of the bag body 84 and the inside of the radiator 90. Is injected, and the inside of the bag body 84 and the inside of the radiator 90 are filled with the insulating oil 30 to form the oil-immersed transformer 76.

As described above, according to the seventh embodiment, since the radiator 90 can be attached to the tank 77, the insulating oil 30 is cooled by the radiator 90 during the operation of the transformer body 13, so that the transformer The effect of cooling the main body 13 can be enhanced.

(Eighth Embodiment) Hereinafter, an eighth embodiment in which the present invention is applied to an oil-immersed transformer will be described with reference to FIG. FIG. 11 shows a configuration of the oil-immersed transformer 95. The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. Only different parts will be described below.

In FIG. 11, the tank 96 is composed of the tank main part 3 and a cover plate 97. The cover plate 97 includes the communication port 5 and the plurality of communication ports 6 in the same manner as in the first embodiment.
Are formed, and a vent 98 is formed at a position near the end of the lid plate 97, and a circular seat 99 is also formed in the vent 98.

In the same manner as in the fifth embodiment, a valve 69 is mounted on the communication port 5, and the opening of the bag 9 accommodating the transformer main body 13, the base plate 17 and the hanging rod 18 is provided. 11
And 12 are suspended at the communication ports 5 and 6 of the cover plate 97, and the transformer body 13 is also suspended by the cover plate 97 by the suspension mechanism 21. The wire bundle 16 passes through the inside of the valve 69 and is taken out of the cover plate 97.

The bag 9 accommodating the transformer body 13
Is housed in the tank main part 3 and the lid plate 97 is
With the device housing chamber 10 housed inside the tank 96, the valve 69 is opened to evacuate the inside of the bag body 9 and to insulate the inside of the bag body 9 with the insulating oil 30. Is performed. At this time, a large amount of insulating oil 3
0 is injected into the inside of the bag body 9, and the bag body 9 is expanded to the extent that it comes into contact with the inner wall of the tank main part 3. Further, a nitrogen gas 72 is sealed in a gas-phase space inside the bag body 9 that is not filled with the insulating oil 30, and the inside of the bag body 9 is closed by closing the valve 69. Thus, an oil-immersed transformer 95 is configured.

As described above, according to the eighth embodiment, the ventilation hole 98 is formed by the cover plate 9 which is hard to contact even if the outer wall of the bag body 9 expands.
7, the insulating oil 30 having a large capacity can be injected into the bag 9. In addition, by closing the valve 69 and forming the inside of the bag body 9 as the device accommodating chamber 10 into a closed structure, the deterioration of the insulating oil 30 due to the contact with the outside air can be suppressed. Then, a vent 98 is formed in the lid plate 97.
By providing the same, a function similar to that of a conservator that absorbs thermal expansion and thermal contraction can be provided.

The present invention is not limited to the embodiment described above and shown in the drawings.
Extension is possible. In the embodiment of the present invention, the evacuation of the inside of the equipment housing chamber and the injection of the insulating oil into the inside of the equipment housing chamber include:
Although the transformer was not stored in the tank or was stored in the tank, this was not limited to this.However, by providing a vent in the tank, Also in the example, in a state where the transformer main body is housed in the tank, the inside of the equipment housing chamber can be evacuated and the insulating oil can be injected into the equipment housing chamber.

In the embodiment of the present invention, the suspension mechanism suspends the base plate on which the transformer main body is mounted with a plurality of suspension rods. However, the present invention is not limited to this. Is 1
The suspension rod may be configured to be directly attached to the transformer main body.

In the embodiment of the present invention, a valve is used. However, the present invention is not limited to this, and a stopper may be used. In the embodiment of the present invention, the present invention is applied to an oil-filled transformer. However, the present invention is not limited to this, and may be applied to all oil-filled electric devices such as a reactor, a switch, and a switchboard.

[0070]

As is apparent from the above description, according to the present invention, the transformer body is housed in the bag body by using the opening, and the transformer body and the bag body are provided on the lid plate of the tank. The oil-filled electrical equipment is suspended by suspending it in the communication port and housing it inside the tank, and evacuating only the inside of the bag as the equipment storage chamber and injecting insulating oil only into the inside of the bag. Because of the configuration, an excellent effect that the structure of the tank does not need to be a structure having vacuum resistance is provided.

[Brief description of the drawings]

FIGS. 1A and 1B are diagrams showing a first embodiment of the present invention, wherein FIG. 1A is a sectional view after a transformer main body is accommodated in a tank, and FIG.

FIG. 2 is a partially enlarged view of FIG. 1;

FIG. 3 is an exploded perspective view of a communication port at an end of a cover plate.

FIG. 4 is an exploded perspective view of a communication port in a central portion of a cover plate.

FIG. 5 is a diagram corresponding to FIG. 1 (a) showing a second embodiment of the present invention.

FIG. 6 is a view corresponding to FIG. 1A showing a third embodiment of the present invention.

FIG. 7 is a view corresponding to FIG. 1A showing a fourth embodiment of the present invention.

FIG. 8 shows a fifth embodiment of the present invention and is equivalent to FIG.

FIG. 9 is a view corresponding to FIG. 1 (a) showing a sixth embodiment of the present invention.

FIG. 10 is a view corresponding to FIG. 1A showing a seventh embodiment of the present invention.

FIG. 11 is a view corresponding to FIG. 1A showing an eighth embodiment of the present invention.

FIG. 12 shows a conventional example and is equivalent to FIG.

[Explanation of symbols]

In the drawing, 1, 31, 36, 52, 68, 73, 76, 9
5 is an oil-filled transformer (oil-filled electrical equipment), 2, 32, 37, 5
3,77,96 are tanks, 3,38,78 are tank main parts, 4,33,39,54,97 are cover plates, 5,6,4
4, 55, 56, 64 are communication ports, 9, 48, 84 are bags (equipment accommodation rooms), 13 is a transformer main body (equipment main body), 2
1, 47, 67 are suspension mechanisms, 30 is insulating oil, 34, 4
0, 79, 98 are ventilation holes, 42, 63 are reinforcing members, 6
Reference numerals 1 and 62 denote cover plates, 69 and 75 are valves, 72 is a nitrogen gas, 82 and 92 are communication pipes, and 90 is a radiator.

Continuing from the front page (72) Inventor Kazuo recommended No. 2121, Nao, Nao, Asahi-machi, Mie-gun, Mie Prefecture Inside the Toshiba Mie Plant (72) Inventor Tabun Ozaki, 2121 Nagoya, Nagoya, Asahi-machi, Mie-gun, Mie Inside the Toshiba Mie Plant (72) Inventor Masatoshi Shikii 2121, Nao, Asahimachi, Mie Prefecture, Mie Prefecture Inside the Mie Plant, Toshiba Corporation (72) Inventor Junichi Matsushige 2,121, Nagoya, Asahimachi, Mie Prefecture, Mie Prefecture Inside the Toshiba Mie Plant (72) Inventor Tsutomu Miyanishi 2121 Nagoya, Asahi-machi, Mie-gun, Mie Prefecture Inside the Mie Plant Toshiba Corporation (72) Inventor Kazuaki Ito 2--24 Harumi-cho, Fuchu-shi, Tokyo 1 Toshiba FA System Engineering Co., Ltd. (72) Inventor Yoshihiro Ito 2-24-24 Harumi-cho, Fuchu-shi, Tokyo In-house Toshiba FA System Engineering Co., Ltd. (72) Inventor Takayuki Saito Harumi-cho, Fuchu-shi, Tokyo 1 Toshiba FE System, 2-chome 24 (72) Inventor Kazuhiro Takamoto 2-24-24 Harumi-cho, Fuchu-shi, Tokyo Toshiba FA System Engineering Co., Ltd. F-term (reference) 5E050 CA03 CB03 GA01 5E059 BB02 BB17

Claims (9)

[Claims] 1. A device main body, a tank having a communication port, a suspension mechanism for suspending the device main body in the tank, and a device housing having an opening and surrounding the device main body and the suspension mechanism. A bag body disposed so as to form a chamber, wherein the opening is suspended by the tank and communicated with the outside through the communication port, and an insulating oil contained in the bag body. Oil-filled electrical equipment. 2. The oil-filled electrical device according to claim 1, wherein the opening of the bag is suspended from a communication port of the tank. 3. The oil-filled electric device according to claim 2, wherein a vent is provided in the tank. 4. The bag is provided with a plurality of openings, the tank is provided with a plurality of communication ports, and the opening of the bag is suspended by the communication port of the tank. The oil-filled electrical device according to claim 1, wherein 5. The oil-filled electric device according to claim 1, wherein the device storage chamber is formed by a part of an inner wall of the tank and a bag. 6. The oil-filled electrical device according to claim 2, wherein a valve or a stopper is provided at the communication port. 7. The oil-filled electrical device according to claim 3, wherein a valve or a stopper is provided in the ventilation port. 8. A radiator is provided in the tank through a communication pipe, a connection port is provided in the bag body, and a connection port of the bag body is fixed to the communication pipe. Item 1
The described oil-filled electrical equipment. 9. The communication port according to claim 3, wherein the communication port is provided with a valve or a plug, and the ventilation port is provided at a position above the upper wall or the side wall of the tank where the outer wall of the bag does not contact. Oil-filled electrical equipment.