JPH1167546A - Electrical appliance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the generation of vibrations and noise in tanks and the transmission of vibrations and noise generated in the tanks to the outside and at the same time, to make a coolant to evenly flow into the main body and into each tank. SOLUTION: In an electrical appliance, the main body of which is composed of a core 2 and a winding 3 and is housed in a tank 1 together with an insulating gas (insulating medium), such as SF6 gas, etc., a honeycomb member (9 member having a honeycomb structure) 31 is attached to the internal surface of the tank 1. The figure shows a state such that the honeycomb member 31 is attached to the entire internal surface of the tank 1, but the member 31 can be attached to at least a part of the internal surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-voltage device such as a static induction electric device, and more particularly to a high-voltage device in a sealed metal container in which an insulating or cooling medium is sealed in a closed tank. The present invention relates to an electric device having a housing.

[0002]

2. Description of the Related Art Conventionally, electric devices such as gas-insulated transformers are:
Since it is necessary to cool the heat generated in the main body of the device, it is configured as shown in FIGS. That is, each of the three tanks 1 arranged side by side comprises a core 2 for one phase in which silicon steel sheets are laminated, and a winding 3 for one phase wound around the main leg of the core 2. In addition to the housing of the main body of the device, an insulating gas 4 such as SF ₆ gas is stored therein. Between the outermost periphery of the winding 3 and the inner surface of the tank 1, there is provided a partition plate 5 for vertically separating the space in the tank. is set up.

[0003] Outside the tank 1, a plurality of coolers 6 for cooling the insulating gas 4 and a plurality of blowers 7 for circulating the insulating gas are provided. Here, as an example, a configuration in which a plurality of sets (six sets in the drawing) of the coolers / blowers 6 and 7 are provided such that each set includes one cooler 6 and one blower 7 is shown. I have. A common pipe 8 is provided between the three tanks 1 and the plural sets of coolers / blowers 6 and 7.
And a pipe 9a connecting the tank 1 and the common pipe 8
And pipe 9b connecting common pipe 8 to cooler / blower
Is provided. Note that the three tanks 1 are electrically connected to form one three-phase transformer or the like.

[0004] In the electric device configured as described above, the insulating gas 4 cooled by the plurality of coolers 6 is joined by the blower 7 from the pipe 9b to the common pipe 8, and then split into the pipe 9a to be separated into the tank 1 Sent to the bottom of Here, since the winding 3 and the tank 1 are partitioned by the gas partition plate 5, the insulating gas 4 flowing into the tank 1 flows into the gas passages provided inside the iron core 2 and the winding 3 respectively. Shunting, rising while cooling the iron core 2 and the winding 3, merging from the upper part of the tank 1 through the pipe 9 a to the common pipe 8,
The flow is divided into the pipe 9b and returned to the cooler 6 and the blower 7. As a result, the device body composed of the iron core 2 and the windings 3 is cooled and insulated by the insulating gas 4.

A winding 3 of an electric device such as a transformer is composed of a plurality of disk windings, for example, as shown in FIG. That is, a plurality of disk windings 13 formed by winding a wire conductor between the inner insulating tube 11 and the outer insulating tube 12.
Are stacked in a plurality of stages at equal intervals in the axial direction, and each of the disk windings 13 is electrically connected in series by a crossover.

Here, a plurality of horizontal spacing pieces 14 are radially arranged at equal intervals between the disk windings 13, whereby a horizontal cooling passage in the radial direction is provided between the disk windings 13. 1
5 are formed. Further, between the inner insulating tube 11 and the outer insulating tube 12 and each of the disk windings 13, an inner vertical spacing piece 16 and an outer vertical spacing piece 17 are provided.
Is provided at a position corresponding to the disposition location, so that the horizontal cooling path 15 is communicated between the disk winding 13 and the inner insulating cylinder 11 and between the disk winding 13 and the outer insulating cylinder 12. An inner vertical cooling passage 18 and an outer vertical cooling passage 19 are formed. The disk winding configured as described above is housed in a tank (not shown) together with an insulating medium having a cooling property such as SF ₆ gas or transformer oil, and the insulating medium is subjected to forced convection or natural convection. The cooling water is circulated in each cooling path to cool the windings.

In the winding 3 configured as described above,
In order to further enhance the cooling effect, as shown in FIG. 15, one cooling area is formed by several stages of disk windings 13. That is, inner plugs 20 and outer plugs 21 are alternately provided along the entire circumference every several stages of the disk winding, and the inner vertical cooling passages 18 and the outer vertical cooling passages 19 are alternately closed. ing. As a result, the inlet and outlet of the insulating medium are inverted inward and outward for each cooling area, and the insulating medium such as SF ₆ gas is formed in a zigzag shape to form each disk winding. Between 13 and
The cooling efficiency of the entire winding is increased.

[0008]

However, the conventional electric equipment configured as described above has the following problems to be solved.

(1) Problems of the common piping system First, the common piping system as shown in FIG. 12 is applied to each tank even when the number of blowers 7 to be operated is reduced due to a load condition of a transformer or the like. It is employed to make the insulating gas flow relatively uniformly. In the gas insulated stationary induction device adopting such a common piping method, the gas discharged from the plurality of blowers 7 is merged once in the common piping 8 and then diverted to the respective tanks. When the pipes 9b on the side of the coolers / blowers 6 and 7 or the pipes 9a on the tank side are installed at one position in the axial direction of the common pipe 8, the flow balance to each tank is deteriorated, and a certain tank is deteriorated. Then, the flow rate tends to decrease. Furthermore, when some of the plurality of blowers 7 fail, not only does the entire amount of the insulating gas circulating decrease, but also the flow balance to each tank is further deteriorated by the position of the failed blower 7. Disadvantage.

In such a case, the winding temperature in the tank having the smallest flow rate becomes higher than that in the other tanks, and it is necessary to design a cooling system in consideration of this fact. That is, to increase the size of the winding to reduce the amount of heat generated,
Countermeasures such as increasing the number of blowers are conceivable, but in any case, there is a disadvantage that the equipment becomes large. Also,
It is conceivable to increase the diameter of the common pipe, to reduce the flow resistance in the common pipe to be small and uniform, and to improve the flow rate balance. However, disadvantageously, the equipment becomes large and the installation area increases. .

(2) Problems of cooling method for disk winding Further, the conventional winding 3 composed of a plurality of disk windings 13 as shown in FIG. 15 has the following problems. .
That is, the flow velocity distribution of the insulating medium flowing to each horizontal cooling passage 15 in one cooling section partitioned by the inner obstruction plug 20 and the outer obstruction plug 21 is not necessarily uniform as shown by the dotted line in FIG. No. For example, in the case of SF ₆ gas, the flow velocity in the lower horizontal cooling passage 15a near the inlet of one cooling zone is much higher than the flow velocity in the upper horizontal cooling passage 15b near the outlet. Accordingly, stagnation or backflow of the insulating medium may occur near the inflow port in each cooling area.

Therefore, the cooling efficiency of the disk winding 13a disposed near the inflow port is lower than that of the disk winding 13b disposed near the outflow port in each cooling zone, and a uniform cooling effect is obtained. There is a problem that it is not possible to obtain a uniform winding temperature. In this connection, there is also the disadvantage that locally excessive heating in each cooling zone degrades the winding insulation and shortens the life of the transformer.

Therefore, the current density can be reduced by enlarging the cross-sectional area of the winding conductor forming the disk winding 13, or the winding based on the minimum flow rate of the insulating medium in the horizontal cooling passage 15 can be determined. It is conceivable to perform a cooling design, but in any case, there is a disadvantage that the transformer becomes large.

(3) Problems Caused by Metallic Foreign Material Also, there is a possibility that the metallic foreign material may be mixed in during assembly.
In particular, in the case of electric equipment in which the insulating and cooling medium flows, there is a possibility that metal foreign matter that has been moving around is drawn into the flow and is guided into the windings to cause dielectric breakdown. It is difficult to avoid a decrease in insulation performance due to such a foreign metallic substance mixed in the electric equipment.

(4) Generation of Vibration and Noise In electric equipment, the windings and iron core of an equipment main body, for example, a transformer, vibrate during operation, and the vibration is transmitted through a tank, and the whole equipment vibrates. In addition, various sounds are generated from the iron core and the windings during operation, and furthermore, vibration and noise are generated when the insulating medium flows. Such a sound is a sound in a relatively low frequency range.

In such devices, depending on the installation environment, in many cases, it is required to suppress vibration and noise generated from the devices. In response to such a demand for soundproofing, for example, a porous material such as glass wool or urethane foam is attached as a soundproofing material to a building or a structure in which equipment is installed, a machine, a cover of an electric device, an air conditioning duct, or the like. Things are also done. Such a porous material causes sound energy to be consumed as heat energy by viscous attenuation of air in the pores, and generally has a large sound absorption characteristic in a high frequency region.
It is small in a low frequency region of several hundred Hz or less. Therefore, even if such a porous material is used, the effect of preventing sound in a low-frequency region generated from an electric device cannot be expected much.

For example, in gas-filled electric equipment, pipes are covered with a sound-absorbing material or disclosed in JP-A-63-1678.
As disclosed in Japanese Patent Application Laid-Open No. 15-234 and Japanese Unexamined Patent Application Publication No. Hei 2-32412, measures such as mounting a silencer in the middle of piping are taken. However, such a means, the equipment becomes large due to the installation of sound absorbing material and silencer,
The effect was small in spite of the increase in weight.

On the other hand, in the case of airplanes and automobiles, a member having a honeycomb structure is installed in the room from the viewpoint of weight reduction and quietness in the room, and radiation noise and vibration noise of an engine entering from the outside, wind noise during high-speed running, etc. Means are used to reduce this. However, these means are used as blocking means for preventing external sounds from being introduced into the inside, and do not reduce vibrations and noise generated by aircraft and automobiles.

(5) Object of the Invention The present invention has been made to solve the above-mentioned problems of the prior art, and has as its object to suppress the generation of vibration and noise in a tank, Transmission of vibrations and noise generated outside the tank to the outside of the tank, as well as allowing the cooling medium to flow uniformly inside the equipment body and each tank, improving the cooling characteristics and improving insulation reliability. It is to provide enhanced electrical equipment.

[0020]

In order to achieve the above object, the present invention focuses on a honeycomb structure used for suppressing transmission of sound from the outside to the inside in an aircraft or an automobile. It was done. That is, in electrical equipment, by attaching a honeycomb structure to at least a part of the tank, contrary to aircraft and automobiles,
In addition to suppressing the transmission of sound from inside to outside,
It is also possible to improve the cooling characteristics.

According to a first aspect of the present invention, there is provided an electric device comprising a tank and a device main body housed therein together with an insulating medium, wherein a member having a honeycomb structure is attached to at least a part of the inner surface of the tank. Features.

According to the first aspect of the present invention, by attaching a honeycomb member (a member having a honeycomb structure) to at least a part of the inner surface of the tank, noise generated from an apparatus main body provided inside the tank is provided. And the vibrations are absorbed by the honeycomb member, so that vibrations and noise transmitted to the outside of the tank can be reduced. The honeycomb member also suppresses foreign matters mixed during assembly from rising or moving around on the inner surface of the tank due to electric force or flow of the insulating medium. Furthermore, even if foreign matter moves,
Since the honeycomb member captures the foreign matter, the insulation reliability of the device can be greatly improved.

According to a second aspect of the present invention, there is provided a tank accommodating an apparatus main body together with an insulating medium having a cooling property and a plurality of coolers, and the tank and the plurality of coolers are communicated by piping. In the electric device configured to circulate the insulating medium, a member having a honeycomb structure is attached to a part of the pipe.

According to the second aspect of the present invention, the honeycomb member mounted in the pipe rectifies the flow of the insulating medium flowing in the pipe and absorbs the flow noise generated when the medium flows. . Therefore, the cooling characteristics can be improved, and the vibration and noise of the device can be reduced.

According to a third aspect of the present invention, there is provided a tank containing a main body of the apparatus together with an insulating medium having a cooling property, and a plurality of coolers. In an electric device configured to circulate, a member having a honeycomb structure is attached to an inlet of an insulating medium into the tank.

According to the third aspect of the present invention, since the member having the honeycomb structure is attached to the inlet of the insulating medium in the flow path, particularly to the inside of the tank, the insulating medium is provided in the insulating medium. Insulating foreign matter as well as mixed metallic foreign matter can be captured by the member having the honeycomb structure and prevented from entering the tank. Also, at the inlet into the tank, the diameter and direction of the flow path change rapidly, so that the flow of the insulating medium is likely to be disturbed, but by disposing a member having a honeycomb structure in this part, The direction of the flow can be changed, rectification and speed adjustment can be performed, and the cooling efficiency of the device body such as windings can be improved. Further, generation of vibration and noise due to the flow can be suppressed.

According to a fourth aspect of the present invention, a winding formed by winding a conductor is housed in a tank together with an insulating medium having a cooling property, and the insulating medium is circulated in the winding. In this electrical device, a member having a honeycomb structure is attached to an inlet of the insulating medium into the winding.

According to the fourth aspect of the present invention, in particular, a winding which requires cooling and which needs to be efficiently divided in the winding is provided with an inlet into the winding. Since the flow can be rectified by the honeycomb core and the flow rate, direction and distribution of the insulating medium flowing into the winding can be controlled, the cooling performance of the winding can be improved. Further, since the flow of the insulating medium can be rectified at the inlet into the winding in this manner, it is possible to suppress the generation of vibration and noise due to the flow of the insulating medium inside the winding. Further, by providing a member having a honeycomb structure at the inlet to the winding in this way, foreign matter in the insulating medium can be captured at this portion, and entry of the foreign matter into the winding can be prevented.

According to a fifth aspect of the present invention, a winding formed by winding a conductor is accommodated in a tank together with an insulating medium having a cooling property, and the insulating medium is circulated in the winding. In this electrical apparatus, an insulator having a honeycomb structure is attached to at least a part of the flow path of the insulating medium in the winding.

According to the fifth aspect of the present invention, the flow of the insulating medium in the winding is rectified by the honeycomb insulator (insulator having a honeycomb structure) attached in the winding, and the cooling efficiency is improved. Can be improved.

According to a sixth aspect of the present invention, a winding formed by winding a conductor is accommodated in a tank together with an insulating medium having a cooling property, and a vertical flow path and a horizontal direction of the insulating medium are accommodated in the winding. A configuration in which a flow path is provided, and a blocking member that closes the insulating medium is attached to the vertical flow path to form a plurality of cooling zones in the winding, and the insulating medium is circulated in the plurality of cooling zones. In the electrical device, an insulator having a honeycomb structure is attached in the vertical flow path.

According to the sixth aspect of the present invention, the flow of the insulating medium in the winding is rectified by arranging the closing member for closing the insulating medium and the honeycomb insulator at appropriate intervals. In addition, the introduction of the windings into the horizontal flow path can be efficiently diverted, and the cooling efficiency can be improved. Also, by attaching the honeycomb insulator to the partition plate that closes the insulating medium in close contact, the flow of the insulating medium that changes the flow direction by colliding with the closing member is controlled,
The direction and the flow rate can be optimized, and the cooling characteristics can be improved.

According to a seventh aspect of the present invention, a winding formed by winding a conductor is housed in a tank together with a cooling insulating medium, and a space in the tank is provided between the outermost periphery of the winding and the inner surface of the tank. In the electrical equipment provided with a partition plate for vertically separating the above, an insulator having a honeycomb structure is attached to the partition plate.

According to the seventh aspect of the present invention, by attaching the honeycomb insulator to the upper part of the partition plate or a part or the whole of the lower portion, the foreign matter that has collided with the partition plate or the foreign material that has fallen Can be captured by the honeycomb insulator, and the insulation reliability is greatly improved.

According to an eighth aspect of the present invention, there is provided an electric apparatus having a magnetic shield for covering a surface of an iron core, wherein the iron core and the winding are housed together with an insulating medium in a tank.
An insulator having a honeycomb structure is attached to an upper portion of the magnetic shield covering the surface of the lower iron core.

According to the eighth aspect of the present invention, the foreign matter is particularly likely to fall, and the lower magnetic shield surface which affects the insulation performance when the metallic foreign matter adheres is made of a honeycomb insulator. Because it is covered, it can capture foreign matter that has fallen, or foreign matter carried by the insulating medium, and prevent the foreign matter from moving to the high-voltage part, moving around the magnetic shield surface, and floating, The insulation reliability is greatly improved.

According to a ninth aspect of the present invention, there is provided an electric apparatus having a winding formed by winding a conductor and an insulating medium in a tank, wherein an insulator having a honeycomb structure is attached to an outer periphery of the winding. It is characterized by that.

According to the ninth aspect of the present invention, the noise and noise generated in the winding are absorbed by the honeycomb insulator attached to the outer periphery of the winding and transmitted to the surrounding insulating medium. Therefore, vibration and noise can be reduced.

According to a tenth aspect of the present invention, there is provided an electric device in which a winding formed by winding a conductor around an insulating cylinder is housed together with an insulating medium in a tank, wherein the insulating cylinder has a honeycomb structure. It is characterized by using an insulator.

According to the tenth aspect of the present invention, since the honeycomb insulator is used for the insulating cylinder around which the winding is wound, the insulating medium can flow freely from the inside of the winding through the honeycomb insulator. Thus, the cooling performance of the winding can be improved.

[0041]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A plurality of embodiments of an electric device according to the present invention as described above will be described below with reference to FIGS. Members similar to those in the related art shown in FIGS. 12 to 15 are denoted by the same reference numerals, and description thereof is omitted.

(1) First Embodiment (Configuration) FIG. 1 is a diagram showing one embodiment according to the first aspect of the present invention as a first embodiment of an electric apparatus according to the present invention. is there. In the following, according to this FIG.
The configuration of the present embodiment will be described.

First, as shown in FIG. 1, an electric apparatus according to the present embodiment basically includes an iron core 2 and a winding core together with an insulating gas (insulating medium) 4 such as SF ₆ gas in a tank 1. Line 3
Is an electrical device that houses a device body composed of: A honeycomb member (member having a honeycomb structure) 31 is attached to the inner surface of the tank 1 of the electric device. Although the figure shows a state where the honeycomb member 31 is attached to the entire inner surface of the tank 1, the honeycomb member 31 may be attached to at least a part of the inner surface of the tank 1.

Here, the honeycomb member 31 is made of various materials such as a metal structure, a paper structure made of kraft paper or the like, or a honeycomb structure made of an insulator made of a thin sheet of plastic such as aramid having high heat resistance. Can be used. As the honeycomb member 31 itself, various shapes such as a honeycomb shape having a hexagonal cross section or a cylindrical shape can be used. Furthermore, the orientation of the honeycomb core may be perpendicular to the tank surface, or may be arranged at an appropriate angle.

(Operation / Effect) The operation / effect of this embodiment having the above configuration is as follows. First,
Since the honeycomb member 31 is attached to the inner surface of the tank 1, noise and vibration generated from the device body stored in the tank 1 are absorbed by the honeycomb member 31 and are not transmitted to the surface of the tank 1. External vibration,
No noise leaks. In particular, it is possible to prevent sound or vibration generated inside the tank 1 from being transmitted to the outside through the tank wall. As a result, an electric device with lower vibration and lower noise can be obtained as compared with the method of mounting the electric device.

More specifically, an exciting sound generated when the windings and the iron core generated inside the transformer are excited, and a cooling medium forcedly flowing for cooling collides in the piping when flowing through the piping. The sound generated in each part at the time, or the sound generated from the blower or the pump and transmitted from the inside of the tank is a sound in a relatively low frequency range. The effect was small. However, when the honeycomb member 31 is used as in the present embodiment, the sound absorbing effect can be increased in a wide range from a low frequency region to a high frequency region. In particular, by increasing the thickness of the honeycomb core, by utilizing the characteristics of the honeycomb structure such as improving the sound absorption performance in the low frequency region, by appropriately selecting the shape and size of the honeycomb core, a wide range of Excellent sound absorption performance over a frequency range can be realized.

In addition, the metallic foreign matter mixed into the tank 1 during the assembly of the equipment is likely to stand up or move around on the inner surface of the tank 1, but in the present embodiment, the honeycomb attached to the inner surface of the tank 1 The member 31 can suppress the metal foreign matter in the tank 1 from moving due to the electric force or the flow of the insulating gas 4. Furthermore, even if the metallic foreign matter in the tank 1 moves with the flow of the insulating gas 4, the metallic foreign matter is captured when it enters the core of the honeycomb member 31, and the flow of the insulating gas 4 and the electric suction force Due to such factors, the fluid does not flow again in the tank. Therefore, the insulation reliability of the device can be greatly improved.

In the present embodiment, the shape and size of the honeycomb core and the orientation of the honeycomb core are not limited. However, by appropriately selecting these conditions, the soundproofing and sound absorption of the honeycomb member 31 can be improved. To increase the effect of
Appropriate control of the flow direction and flow rate of the insulating medium can be performed.

(2) Second Embodiment (Configuration) FIG. 2 is a diagram showing one embodiment according to the second aspect of the present invention as a second embodiment of an electric apparatus according to the present invention. is there. In the following, according to this FIG.
The configuration of the present embodiment will be described.

First, as shown in FIG. 2, the electric apparatus according to the present embodiment basically includes a core 2 and a winding core together with an insulating gas (insulating medium) 4 having a cooling property such as SF ₆ gas. 3
A tank 1 accommodating the main body of the apparatus and a plurality of coolers 6, and the tank 1 and the plurality of coolers 6 are communicated with each other by pipes 9a and 9b to circulate the insulating gas 4. Electrical equipment. A honeycomb member (member having a honeycomb structure) 32 is attached to a part of the pipes 9a and 9b of the electric device. In the figure, the honeycomb members 32 are attached one by one to each downstream part near each common pipe 8 where the flow distribution changes abruptly. 32 can be appropriately provided in a portion where the distribution of the flow rapidly changes in the pipes 9a and 9b. For example, a plurality of honeycomb members 3
For example, 2 can be attached, and the arrangement location and number thereof can be freely selected.

(Operation / Effect) The operation / effect of this embodiment having the above configuration is as follows. First,
By the honeycomb members 32 attached in the pipes 9a and 9b, the flow of the insulating gas 4 flowing in the pipes 9a and 9b can be rectified, and the flow noise generated when flowing can be absorbed by the honeycomb members 32. Therefore, since the insulating gas 4 as the cooling medium flows efficiently, the cooling characteristics are improved, and the vibration and noise generated when the insulating gas 4 collides with or flows into the pipes or equipment when the insulating gas 4 flows can be reduced. it can.

FIG. 3 is a view for explaining the rectifying action of the honeycomb member 32. In FIG. 3, the length of the arrow indicates the flow velocity of the flow, and the direction of the arrow indicates the direction of the flow. A turbulent flow 101 in which the flow direction and the flow velocity are turbulent
However, when passing through the honeycomb portion of the honeycomb member 32, the flow becomes a rectified laminar flow 102, the direction of which is uniform, and the flow velocity is evenly distributed. In addition, even in the case of a spiral flow, the flow is rectified by passing through the honeycomb, becomes a flow close to a cylindrical shape, and the vortex flow decreases.

Further, various foreign substances such as metallic foreign substances contained in the insulating gas 4 flowing in the pipes 9a and 9b are captured by the honeycomb portion, and the insulating gas 4 is cleaned through the honeycomb member 32. In particular, the honeycomb member 32 is
By arranging the insulating gas 4 at an appropriate angle with respect to the direction of the flow of the insulating gas 4, it is possible to use a uniform flow in the axial direction of the core after passing through the honeycomb portion. The optimal flow can be selected, and the cooling characteristics can be greatly improved.

(3) Third Embodiment (Configuration) FIG. 4 is a view showing one embodiment according to the third aspect of the present invention as a third embodiment of an electric apparatus according to the present invention. is there. In the following, according to this FIG.
The configuration of the present embodiment will be described.

First, as shown in FIG. 4, an electric apparatus according to the present embodiment basically includes an iron core 2 and a winding together with a cooling insulating gas (insulating medium) 4 such as SF ₆ gas. 3
A tank 1 accommodating the main body of the apparatus and a plurality of coolers 6, and the tank 1 and the plurality of coolers 6 are communicated with each other by pipes 9a and 9b to circulate the insulating gas 4. Electrical equipment. A honeycomb member 33 is attached to an inlet of the insulating gas 4 into the tank 1 of the electric device. In the drawing, a state is shown in which the honeycomb member 33 is attached to the inlet 1a on the tank 1 side, but the honeycomb member 33 is connected to the pipe 9a.
May be provided on _one side or, alternatively, it may be provided on both the tank 1 side pipe 9a ₁ side. Furthermore, such attachment of the one honeycomb member 33 in a region ranging from the tank 1 side of the inlet 1a to the pipe 9a ₁ side, the specific configuration of the honeycomb member 33 at the inlet portion is selectable.

(Operation / Effect) The operation / effect of the present embodiment having the above configuration is as follows. First,
Since the honeycomb member 33 is attached to the introduction port into the tank 1, not only the metallic foreign matter mixed in the insulating gas 4 but also the insulating foreign matter is captured by the honeycomb member 33, and the foreign matter enters the tank 1. Can be prevented.

Further, since the diameter and direction of the flow path change abruptly at the inlet into the tank 1, the insulating gas 4
In the present embodiment, the direction of the insulating gas 4 can be changed, rectification, and speed adjustment can be performed by disposing the honeycomb member 33 in this portion. Therefore, the cooling efficiency of the device body such as the winding 3 can be improved. Further, generation of vibration and noise due to the flow can be suppressed. Further, when the insulating gas 4 is introduced into the tank 1, the collision and the flow angle and the flow rate of the insulating gas 4 against the partition plate are controlled, so that the generation of vibration and noise due to the flow can be suppressed.

(4) Fourth Embodiment (Structure) FIG. 5 is a diagram showing one embodiment according to the fourth aspect of the present invention as a fourth embodiment of an electric apparatus according to the present invention. is there. In the following, according to this FIG.
The configuration of the present embodiment will be described.

First, as shown in FIG. 5, in the electric apparatus according to the present embodiment, basically, a winding 3 made of a conductor is wound in a tank (not shown) by SF ₆ gas or a transformer. The electrical device is housed together with an insulating medium having a cooling property such as oil and configured to circulate the insulating medium in the winding 3. A honeycomb member 35 is attached to an inlet 34 of the insulating medium into the winding 3 of the electric device.

(Operation / Effect) The operation / effect of the present embodiment having the above configuration is as follows. First,
Since the honeycomb member 35 is attached to the inlet 34 into the winding 3, the winding 3 needs to be cooled, and the winding 3 needs to be efficiently divided into the winding 3. At the inlet 34 into the inside 3, the flow is rectified by the honeycomb member 35, the insulating medium flowing into the winding can be controlled, and the cooling performance of the winding 3 can be improved. Further, as described above, since the flow of the insulating medium can be rectified at the inlet 34 into the winding 3, generation of vibration and noise due to the flow of the insulating medium inside the winding 3 can be suppressed.

Further, by attaching the honeycomb member 35 to the inlet 34 of the insulating gas into the winding 3 as described above, not only the metallic foreign matter mixed in the insulating medium but also the insulating foreign matter is controlled by the honeycomb member 35. It is possible to capture and prevent these foreign substances from entering the tank 1.

(5) Fifth Embodiment (Structure) FIG. 6 is a diagram showing one embodiment according to the fifth aspect of the present invention as a fifth embodiment of the electric apparatus according to the present invention. is there. In the following, according to this FIG.
The configuration of the present embodiment will be described.

First, as shown in FIG. 6, an electric device according to the present embodiment basically includes a wire conductor between an inner insulating tube 11 and an outer insulating tube 12 in a tank (not shown). The windings 3 formed by stacking a plurality of disk windings 13 wound together with a cooling insulating medium such as SF ₆ gas or transformer oil are housed in the windings 3. Is an electric device configured to circulate. A honeycomb insulator (an insulator having a honeycomb structure) 36 is attached to a part of the horizontal cooling path 15 in the winding 3 of the electric device and a part of the inner and outer vertical cooling paths 18 and 19. . Note that the honeycomb insulator 36 is not limited to a part of the cooling path, and the entire cooling path can be formed of the honeycomb insulator. That is, all of the horizontal cooling passages 15 or
All or both of the vertical cooling paths 18, 19 can be made of honeycomb insulator.

(Operation / Effect) The operation / effect of this embodiment having the above configuration is as follows. That is, the flow of the insulating medium in the windings can be rectified by the honeycomb insulator 36 mounted in the cooling passages 15, 18, and 19 for cooling the windings, and the cooling efficiency can be improved.
In particular, by providing the honeycomb insulators 36 in the vertical cooling passages 18 and 19, the stagnation in the vertical cooling passages 18 and 19 can be prevented, and the flow velocity distribution of the refrigerant in the horizontal cooling passage 15 can be made uniform.

(6) Sixth Embodiment (Structure) FIG. 7 is a diagram showing one embodiment of the invention according to claim 6 as a sixth embodiment of the electric apparatus according to the present invention. is there. In the following, according to this FIG.
The configuration of the present embodiment will be described.

First, as shown in FIG. 7, an electric apparatus according to the present embodiment basically includes a wire conductor between an inner insulating tube 11 and an outer insulating tube 12 in a tank (not shown). The windings 3 formed by stacking a plurality of disk windings 13 formed by winding the windings together with an insulating medium having a cooling property such as SF ₆ gas or transformer oil are housed in the windings 3. It is an electric device configured to circulate a medium. And
Inside and outside blocking plugs (blocking members) 2 for completely blocking the insulating medium are provided in the vertical cooling passages 18 and 19 inside and outside the electric device.
0 and 21 are alternately arranged at appropriate intervals to form a plurality of cooling zones. In addition to this configuration, a plurality of honeycomb insulators 37 are arranged and mounted at appropriate intervals in the inner and outer vertical cooling passages 18 and 19. further,
Below the inner plug 20, a honeycomb insulator 38 is attached in close contact.

(Operation and Effect) The operation and effect of the present embodiment having the above configuration are as follows. That is, inside and outside closing plugs 20 and 21 for completely closing the insulating medium are alternately arranged at appropriate intervals in the inside and outside vertical cooling paths 18 and 19 for winding cooling, and a plurality of honeycomb insulators 37 are provided. Are arranged at appropriate intervals, the flow of the insulating medium in the winding 3 can be rectified. In particular, the honeycomb insulator 37 flows through one vertical cooling passage between the one closing plug that completely blocks one vertical cooling passage and the next stopper plug that completely closes the other vertical cooling passage. Since the insulating medium can be efficiently diverted to the plurality of horizontal cooling passages in the same cooling area and the flow velocity distribution in the horizontal direction can be made uniform, the cooling efficiency can be improved. Further, the honeycomb insulator 38 is closely attached below the inner plug 20 so that the inner plug 20 can be closed.
Since the flow of the insulating medium, which changes the flow direction by colliding with the air, can be controlled and the direction and the flow rate can be optimized, the cooling characteristics can be further improved.

(7) Seventh Embodiment (Structure) FIG. 8 is a view showing one embodiment according to the seventh aspect of the present invention as a seventh embodiment of the electric apparatus according to the present invention. is there. In the following, according to this FIG.
The configuration of the present embodiment will be described.

First, as shown in FIG. 8, in the electric apparatus according to the present embodiment, basically, a winding 3 formed by winding a conductor in a tank 1 has a cooling property of SF ₆ gas or the like. This is an electric device which is provided together with the insulating gas 4 and has a partition plate 5 for vertically separating a space in the tank between the outermost periphery of the winding 3 and the inner surface of the tank 1. The honeycomb insulator 39 is attached to the partition plate 5. Note that the honeycomb insulator 39 may be attached to a part of the upper or lower part of the partition plate 5 or may be attached to the entire surface.

(Operation / Effect) The operation / effect of the present embodiment having the above configuration is as follows. That is, by attaching the honeycomb insulator 39 to the partition plate 5, foreign matter colliding with the partition plate 5 or foreign matter that has fallen can be captured by the honeycomb insulator 39, thereby greatly improving insulation reliability.

(8) Eighth Embodiment (Configuration) FIG. 9 is a diagram showing an eighth embodiment of an electric apparatus according to the present invention, which is an eighth embodiment of the present invention. is there. In the following, according to this FIG.
The configuration of the present embodiment will be described.

First, as shown in FIG. 9, in the electric apparatus according to the present embodiment, the iron core 2 and the winding 3 are basically housed in the tank 1 together with the insulating gas 4 such as SF ₆ gas. This is an electric device including a magnetic shield 50 that covers the surface of the lower iron core. The honeycomb insulator 40 is attached to the upper part of the magnetic shield 50 covering the surface of the lower iron core.

(Operation / Effect) The operation / effect of the present embodiment having the above configuration is as follows. That is, generally, the magnetic shield 50 covering the surface of the lower core
In particular, there is a great risk that foreign matter will fall, and if metal foreign matter adheres, the insulating performance is affected. On the other hand, in the present embodiment, by attaching the honeycomb insulator 40 to the upper portion of such a magnetic shield 50, foreign matter that has been dropped by the honeycomb insulator 40 or carried by the insulating gas 4 is carried. Foreign matter is captured, the foreign matter moves to the high voltage part, and the magnetic shield 4
Since it can be prevented from moving around or floating on the zero surface, insulation reliability is greatly improved.

(9) Ninth Embodiment (Structure) FIG. 10 is a diagram showing one embodiment according to the ninth embodiment of the present invention as a ninth embodiment of the electric apparatus according to the present invention. . In the following, according to this FIG.
The configuration of the present embodiment will be described.

First, as shown in FIG. 10, the electric apparatus according to the present embodiment is basically composed of a plurality of wires each formed by winding a wire conductor around an inner insulating tube 11 in a tank (not shown). Winding 3 formed by stacking disk windings 13 of
₆ is an electric device that is housed together with an insulating medium such as a gas and configured to circulate the insulating medium in the winding 3.
A cylindrical honeycomb insulator 41 is attached to the outer periphery of the winding 3 of the electric device.

(Operation / Effect) The operation / effect of the present embodiment having the above configuration is as follows. That is, the vibration and noise generated in the winding 3 during the operation of the electric device can be absorbed by the honeycomb insulator 41 disposed on the outer periphery of the winding 3 and transmission to the surrounding insulating medium can be suppressed. Vibration and noise transmitted to the outside of the vehicle can be reduced.

(10) Tenth Embodiment (Structure) FIG. 11 is a diagram showing one embodiment according to the tenth aspect of the present invention as a tenth embodiment of the electric apparatus according to the present invention. . The configuration of the present embodiment will be described below with reference to FIG.

First, as shown in FIG. 11, the electric apparatus according to the present embodiment basically includes a plurality of discs each formed by winding a wire conductor between an inner insulating tube 11 and an outer insulating tube 12. This is an electric device configured to house the winding 3 formed by stacking the windings 13 together with an insulating medium such as SF ₆ gas and to circulate the insulating medium in the winding 3. The inner insulating tube 11 around which the winding 3 is wound is constituted by an inner solid insulating tube 11a made of a solid insulator and a honeycomb insulating tube 42 mounted outside the solid insulating tube 11a. Alternatively, the solid insulating tube 1 is attached to the inner insulating tube 11.
The inner insulating tube 11 may be constituted only by the honeycomb insulating tube 42 without using the honeycomb insulating tube 1a.

(Operation / Effect) The operation / effect of this embodiment having the above configuration is as follows. That is, since the honeycomb insulating tube 42 is used for the inner insulating tube 11 around which the winding 3 is wound, the refrigerant can flow freely from the inside of the winding 3 through the honeycomb insulating tube 42.
The cooling performance of the winding 3 can be improved.

(11) Other Embodiments The present invention is not limited to the above embodiments, and various other embodiments can be implemented within the scope of the present invention. For example, in each of the above-described embodiments, the case where an insulating gas such as SF ₆ gas is used as the insulating medium has been described. However, the present invention relates to an electric power using various other insulating media such as transformer oil. The present invention can be applied to equipment, and similarly, excellent effects can be obtained. Further, specific materials such as a honeycomb member and a honeycomb insulator, a honeycomb shape, and the like can be freely selected, and a direction of the honeycomb structure can be appropriately selected according to a use location. Further, by appropriately combining the above embodiments,
A better effect can be obtained.

[0081]

As described above, according to the present invention,
In an electric device in which a device main body is housed together with an insulating medium in a tank, by attaching a member having a honeycomb structure to each part in the tank, the generation of vibration and noise in the tank is suppressed. Transmission of vibration and noise generated by the
The cooling medium can be made to flow uniformly in the apparatus main body and each tank. Therefore, it is possible to provide an electric device with reduced vibration and noise, and further improved cooling characteristics and insulation reliability.

[Brief description of the drawings]

FIG. 1 is a sectional side view showing an electric device according to a first embodiment of the present invention.

FIG. 2 is a sectional side view showing an electric device according to a second embodiment of the present invention.

FIG. 3 is a schematic diagram for explaining the rectifying action of the honeycomb member of FIG. 2;

FIG. 4 is a sectional side view showing an electric device according to a third embodiment of the present invention.

FIG. 5 is a sectional perspective view showing a part of an electric device according to a fourth embodiment of the present invention.

FIG. 6 is a sectional view showing a winding according to a fifth embodiment of the present invention.

FIG. 7 is a sectional view showing a winding according to a sixth embodiment of the present invention.

FIG. 8 is a sectional side view showing an electric device according to a seventh embodiment of the present invention.

FIG. 9 is a sectional side view showing an electric device according to an eighth embodiment of the present invention.

FIG. 10 is a sectional view showing a winding according to a ninth embodiment of the present invention.

FIG. 11 is a sectional view showing a winding according to a tenth embodiment of the present invention.

FIG. 12 is a plan view showing a conventional gas-insulated transformer.

FIG. 13 is a sectional side view of FIG.

FIG. 14 is a plan view showing an example of a winding of a conventional electric device.

FIG. 15 is a cross-sectional view illustrating a cross-sectional structure and a flow distribution of the winding of FIG. 14;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Tank 2 ... Iron core 3 ... Winding 4 ... Insulating gas 5 ... Partition plate 6 ... Cooler 7 ... Blower 8 ... Common piping 9a, 9b ... Piping 11 ... Inner insulating tube 12 ... Outer insulating tube 13 ... Disk winding 14 horizontal spacing piece 15 horizontal cooling path 16 inner vertical spacing piece 17 outer vertical spacing piece 18 inner vertical cooling path 19 outer vertical cooling path 20 inner plug 21 outer plug 31-33, 35 Honeycomb member 34 ... Insulation medium inlet 36-40 ... Honeycomb insulator 41 ... Cylinder-shaped honeycomb insulator 42 ... Honeycomb insulating cylinder 50 ... Magnetic shield

Claims (10)

[Claims] 1. An electric device comprising a tank and a device main body housed in the tank together with an insulating medium, wherein a member having a honeycomb structure is attached to at least a part of an inner surface of the tank. 2. A cooling apparatus comprising: a tank accommodating a device main body together with an insulating medium having a cooling property; and a plurality of coolers, and the tank and the plurality of coolers are communicated by piping to circulate the insulating medium. The electrical device according to claim 1, wherein a member having a honeycomb structure is attached to a part of the pipe. 3. A cooling apparatus comprising: a tank accommodating an apparatus main body together with an insulating medium having a cooling property; and a plurality of coolers, wherein the insulating medium is circulated between the tank and the plurality of coolers. An electrical device comprising: a member having a honeycomb structure attached to an inlet of an insulating medium into the tank; 4. An electric apparatus comprising: a tank in which a winding formed by winding a conductor is accommodated in a tank together with an insulating medium having a cooling property, and wherein the insulating medium is circulated in the winding. An electric device, wherein a member having a honeycomb structure is attached to an inlet of an insulating medium into a winding. 5. An electric apparatus comprising: a tank in which a winding formed by winding a conductor is housed in a tank together with an insulating medium having a cooling property, and wherein the insulating medium is circulated in the winding. An electric device, wherein an insulator having a honeycomb structure is attached to at least a part of a flow path of an insulating medium in a winding. 6. A tank in which a winding formed by winding a conductor is housed in a tank together with an insulating medium having a cooling property, and a vertical flow path and a horizontal flow path of the insulating medium are provided in the winding.
In an electric device configured to attach a closing member for closing an insulating medium to a vertical flow path to form a plurality of cooling sections in a winding and to circulate the insulating medium in the plurality of cooling sections. An electric device, wherein an insulator having a honeycomb structure is attached in the vertical flow path. 7. A partition in which a winding formed by winding a conductor is housed in a tank together with an insulating medium having a cooling property, and a space in the tank is vertically separated between an outermost periphery of the winding and an inner surface of the tank. An electric device comprising a plate, wherein an insulator having a honeycomb structure is attached to the partition plate. 8. An electric device comprising a core and windings stored in a tank together with an insulating medium, and a magnetic shield covering a surface of the core, wherein an upper part of the magnetic shield covering a surface of a lower core among the cores. Electrical equipment, characterized in that an insulator having a honeycomb structure is attached thereto. 9. An electric device in which a winding formed by winding a conductor is housed in a tank together with an insulating medium, wherein an insulator having a honeycomb structure is attached to an outer periphery of the winding. Electrical equipment. 10. An electric device comprising a tank and a winding formed by winding a conductor around an insulating cylinder together with an insulating medium, wherein the insulating cylinder is formed using an insulator having a honeycomb structure. Electrical equipment characterized by the following.