JPH11283846A - Stationary induction electric equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low-cost stationary induction electric equipment which is capable of reducing its installed space and on which alignment, etc., can be performed easily at assembling and working of the equipment. SOLUTION: An external cooler 5 is positioned above a tank 1, and the lower surface of the cooler 5 is connected to an upper cover 8 through a first refrigerating pipe 16, and at the same time, through a third refrigerating pipe 18. In addition, a fourth refrigerating pipe 19 is connected to the lower surface of the upper cover 8 and vertically laid downward in the tank 1. The lower end section of the fourth refrigerating pipe 19 is extended into the inside of a lower tank 1b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tank for storing the contents of a main body composed of windings, an iron core, and the like, and an external cooler, and circulating insulating cooling gas between the tank and the external cooler. The present invention relates to a stationary induction electric device that cools the contents of a main body using the same.

[0002]

2. Description of the Related Art In recent years, with an increase in power demand, power receiving and transforming facilities and the like have been often installed in central Tokyo. Therefore, there is a further demand for a reduction in installation space for stationary induction electric devices such as transformers and reactors.

FIG. 6 is a schematic view showing an example of a conventional stationary induction electric device in which an insulating gas is sealed. FIG. 6A is a plan view and FIG. 6B is a side view. In FIG. 1, an induction device main body including an iron core 2 and windings 3 is accommodated in a tank 1 together with an insulating cooling medium 4 for insulating and cooling the contents of the main body. An external cooler 5 for cooling the insulating cooling medium 4 is arranged on a side surface of the tank 1, and the external cooler 5 is connected to the tank 1 by cooling pipes 6 and 7.

FIG. 7 is a schematic side view showing another example of the conventional stationary induction electric equipment. In the example shown in this figure, an external cooler 5 for cooling the insulating cooling medium 4 is arranged above the tank 1. One end of the external cooler 5 and the upper surface of the tank 1 are connected by a cooling pipe 6, and the other end of the external cooler 5 and a lower part of the tank 1 are connected by a cooling pipe 7.

[0005] In the conventional stationary induction electric apparatus having the above-described configuration, the insulating cooling medium 4 cools the core 2 and the windings 3, which are the heating elements in the main body, and the external cooler is connected via the cooling pipe 6. 5 is introduced. Then, the insulating cooling medium 4 cooled by the external cooler 5 is introduced into the lower part of the tank 1 via the cooling pipe 7. As described above, the insulating cooling medium 4 is forcibly circulated by the circulating device (not shown),
Or natural circulation.

[0006]

However, the above-mentioned conventional stationary induction electric equipment has the following problems. That is, in the configuration as shown in FIG. 6, since the external cooler 5 is disposed on the side surface of the tank 1, there is a problem that the installation width of the entire stationary induction electric device is increased by the external cooler 5. .

Further, in the configuration shown in FIG. 7, since the cooling pipe 7 is arranged on the side surface of the tank 1, there is a problem that the installation width of the whole stationary induction electric equipment is increased by the cooling pipe 7. Was. Further, since the cooling pipe 7 connects the external cooler 5 arranged on the upper surface of the tank 1 and the lower part of the tank 1, the positioning of the external cooler 5 and the cooling pipe 7 at the time of installation is very difficult. There was a problem that it was difficult.

[0008] The present invention has been proposed to solve the problems of the prior art as described above.
It is an object of the present invention to provide a low-cost stationary induction electric device which can reduce an installation space, can be easily aligned at the time of assembling work, and the like.

[0009]

According to one aspect of the present invention, there is provided a tank for accommodating an induction machine body including an iron core and a winding together with an insulating cooling medium; An external cooler for cooling the tank, and a static induction electric device having a cooling pipe communicating with the tank and the external cooler and circulating the insulating cooling medium, wherein the external cooler is located above the tank. Placed in
The cooling pipe is connected to a first cooling pipe that connects a lower surface of the external cooler and an upper surface member of the tank, and is connected to a lower surface of the external cooler, and is disposed downward in the tank. And a second cooling pipe extending to a lower portion of the induction device main body in the tank.

According to the first aspect of the present invention, the external cooler is disposed above the tank, and the first cooling pipe connects the lower surface of the external cooler to the upper member of the tank.
Since the second cooling pipe extends downward in the tank from the lower surface of the external cooler, the cooling pipe does not exceed the width of the tank. Therefore, the external cooler can be installed without increasing the installation width of the entire stationary induction electric device.

According to a second aspect of the present invention, in the stationary induction electric apparatus according to the first aspect, the second cooling pipe connects a lower surface of the external cooler and an upper surface of an upper member of the tank. It is characterized by comprising a third cooling pipe and a fourth cooling pipe connected to the lower surface of the upper member of the tank.

According to the second aspect of the present invention, the first cooling pipe and the third and fourth cooling pipes constituting the second cooling pipe are all connected by the upper surface member of the tank. In addition, positioning and the like at the time of equipment installation can be facilitated.

According to a third aspect of the present invention, in the stationary induction electric device according to the second aspect, the first cooling pipe and the third cooling pipe are arranged along a surface of an upper member of the tank. By being provided, it also serves as a reinforcing member for the upper surface member.

According to the third aspect of the present invention, since the first and third cooling pipes are configured to also serve as reinforcing members for the upper surface member of the tank, there is no need to separately provide a reinforcing member.
Since the number of upper surface members of the tank can be reduced accordingly, the number of manufacturing steps for the upper surface members can be greatly reduced. Therefore, the assembling work at the time of installation of the device is facilitated.

According to a fourth aspect of the present invention, there is provided the stationary induction electric device according to the second or third aspect of the present invention.
Is disposed in a space formed between the induction device main body and the tank inside the tank.

According to the fourth aspect of the present invention, the fourth cooling pipe is formed between the induction machine main body and the tank, for example, outside the iron core and the winding, or between the windings. Therefore, it is not necessary to increase the width of the tank in order to arrange the fourth cooling pipe.

According to a fifth aspect of the present invention, there is provided a tank for accommodating an induction machine body including an iron core and a winding together with an insulating cooling medium, an external cooler for cooling the insulating cooling medium,
In a stationary induction electric device having a cooling pipe that circulates the insulating cooling medium by communicating the tank with the external cooler, the tank may have a part of a lower end corresponding to the shape of the external cooler. It has a notched shape, the external cooler is disposed in a space formed by the notched portion of the tank, and the cooling pipe forms the space with a side surface of the external cooler. A first cooling pipe connecting the side of the tank and a second cooling pipe connected to an upper surface of the external cooler and arranged upward in the tank and extending to an upper part of the induction device main body; It is characterized by piping and body.

According to the fifth aspect of the present invention, the external cooler is disposed in a space formed by notching the tank, and the first cooling pipe is provided on the side of the external cooler and the side of the tank. Since the second cooling pipe extends upward from the upper surface of the external cooler in the tank, the cooling pipe does not exceed the width of the tank. Therefore, the external cooler can be installed without increasing the installation width of the entire stationary induction electric device. Further, since the space is formed according to the shape of the external cooler, the height of the stationary induction electric device can be reduced.

According to a still further aspect of the present invention, there is provided the stationary induction electric apparatus according to the fifth aspect, wherein the second cooling pipe is provided between an upper surface of the external cooler and a lower surface of the tank forming the space. , And a fourth cooling pipe connected to the third cooling pipe.

According to the sixth aspect of the present invention, since the first cooling pipe and the third and fourth cooling pipes constituting the second cooling pipe are all connected below the tank,
Positioning and the like at the time of equipment installation can be facilitated.

According to a seventh aspect of the present invention, there is provided a stationary induction electric apparatus according to the second, third, fourth, or sixth aspect, wherein the fourth cooling pipe is made of an insulating material. .

According to the seventh aspect of the present invention, the fourth cooling pipe can be freely arranged even in the high-voltage portion inside the tank, so that it is possible to install the fourth cooling pipe without increasing the width of the tank.

The invention according to claim 8 is a tank for accommodating an induction machine body including an iron core and a winding together with an insulating cooling medium, an external cooler for cooling the insulating cooling medium,
In a stationary induction electric device having a cooling pipe that circulates the insulating cooling medium by communicating the tank and the external cooler, a bushing attachment member for attaching a bushing to an upper side surface of the tank is disposed, The external cooler is disposed in a space formed below the bushing attachment member, and the cooling pipe includes a first cooling pipe connecting a side surface of the external cooler and a side surface of the tank; It is characterized by comprising a second cooling pipe connecting the upper surface of the external cooler and the lower surface of the bushing mounting member.

According to the eighth aspect of the present invention, since the external cooler is disposed in the space formed below the bushing mounting member, the height and width of the stationary induction electric device can be reduced. .

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

[1. First Embodiment] A first embodiment of the present invention is a stationary induction electric apparatus according to claims 1 and 2. FIGS. 1A and 1B are diagrams showing a configuration of a stationary induction electric device according to the present embodiment, wherein FIG. 1A is a front view and FIG. 1B is a side view thereof. In these figures, the tank 1 has an upper tank 1a in its vertical direction.
And a lower tank 1b.
The joint of b is located below. In addition, this tank 1
Inside, an induction machine main body constituted by the iron core 2 and the windings 3 and the like are housed together with the insulating cooling medium 4, and the lower end of the windings 3 is arranged so as to be in contact with the joint between the tanks 1a and 1b. ing. Furthermore, the upper surface of the upper tank 1a
It is covered by the upper cover 8.

An external cooler 5 is arranged above the tank 1, and a first cooling pipe 16 and a second cooling pipe 17 are connected to a lower part of the external cooler 5. Further, the second cooling pipe 17 is provided with a third cooling pipe 18.
And a fourth cooling pipe 19. The first
The cooling pipe 16 and the third cooling pipe 18 are connected to the external cooler 5 and the upper surface of the upper cover 8, and the fourth cooling pipe 19 is connected to the lower surface of the upper cover 8 so as to extend downward in the tank 1. Mounted facing. This fourth cooling pipe 1
9 is attached to the upper cover 8 in a vertical direction,
The lower end extends to the inside of the lower tank 1b.

With such a configuration, the insulating cooling medium 4
Is introduced into the external cooler 5 from the upper tank 1a through the first cooling pipe 16 by forced circulation by a circulation device (not shown) or by natural circulation, and is supplied to the third cooling pipe 18 and the fourth cooling pipe. 19 through the lower tank 1b
Will be introduced.

As described above, since the external cooler 5 is arranged above the tank 1 and the fourth cooling pipe 19 is provided inside the tank 1, as shown in FIG. In addition, the width of the entire stationary induction electric device does not exceed the width of the tank 1. Therefore, the entire installation width can be reduced. In addition, the first, third and fourth cooling pipes 1
Since all the members 6, 18, and 19 are connected to the upper cover 8, positioning at the time of installation and the like are easy and assembly workability is good.

Further, the fourth cooling pipe 19 may be made of an insulating material. Thereby, the fourth cooling pipe 19 can be freely arranged even in the high voltage portion inside the tank 1. for that reason,
The configuration shown in FIG. 1 can be adopted without increasing the width of the tank 1. Note that the second cooling pipe 17 may be configured as one pipe instead of the third cooling pipe 18 and the fourth cooling pipe 19.

[2. Second Embodiment] A second embodiment of the present invention is a stationary induction electric apparatus according to claim 3. FIGS. 2A and 2B are diagrams showing a configuration of the stationary induction electric device according to the present embodiment, wherein FIG. 2A is a plan view thereof, and FIG. 2B is a front view thereof. Here, as shown in FIG. 2A, two external coolers 5 are provided above the tank 1, and these external coolers 5 are arranged in parallel in the longitudinal direction of the tank 1. . The first cooling pipe 16 and the third cooling pipe 18 are attached to the upper cover 8 as in the first embodiment, and are disposed along the upper surface of the upper cover 8. The cover 8 also serves as a reinforcing member. For this reason, the upper cover 8 has a strength that can withstand the pressure inside and outside the tank 1.

As described above, since the first cooling pipe 16 and the third cooling pipe 18 are configured to also serve as a reinforcing member for the upper cover 8, there is no need to provide a reinforcing member for the upper cover 8 separately. Man-hours for manufacturing the cover 8 can be greatly reduced.

[3. Third Embodiment] A third embodiment of the present invention is a stationary induction electric device according to claim 4. FIGS. 3A and 3B are diagrams showing a configuration of the stationary induction electric device according to the present embodiment, wherein FIG. 3A is a plan view, and FIG.
Is a front view thereof. In the present embodiment, the external cooler 5
And the first and third cooling pipes 16 and 18
(The first cooling pipe 16 is not shown), the external cooler 5 is disposed above the tank 1, and the first and third cooling units are arranged in the same manner as the first and third embodiments. Piping 1
Reference numerals 6 and 18 are attached to the upper cover 8.

For example, as shown in FIG. 3B, when the external cooler 5 and the first and third cooling pipes 16 and 18 are arranged near the longitudinal end of the tank 1, FIG. a)
As shown in (4), the fourth cooling pipe 19 is arranged at a horizontal corner of the tank 1. That is, the fourth cooling pipe 19 is arranged in a space around the main body including the iron core 2 and the windings 3. For example, as shown in FIG. 3B, when the external cooler 5 and the first and third cooling pipes 16 and 18 are arranged near the center in the longitudinal direction, FIGS. 3A and 3B.
As shown in (4), the fourth cooling pipe 19 is arranged in the space between the windings 3.

As described above, by arranging the fourth cooling pipe 19 in an extra space between the tank 1 and the main body, the width of the tank 1 is increased in order to arrange the fourth cooling pipe 19. There is no necessity, and the entire width does not become larger than the width of the tank 1.

[4. Fourth Embodiment] A fourth embodiment of the present invention is a static induction electric device according to claims 5 and 6. FIGS. 4A and 4B are diagrams showing a configuration of the stationary induction electric device according to the present embodiment, wherein FIG. 4A is a front view thereof, and FIG. 4B is a side view thereof. FIG. 4 (a)
As shown in the figure, the lower tank 1b has a shape in which the width in the longitudinal direction is shorter than the upper tank 1a.
The width of the lower end of a is also shorter in the longitudinal direction than that of the upper part in accordance with the width of the lower tank 1b. That is, the tank 1 as a whole has a shape in which one lower end is cut out, and the space 20 is formed in that part.

The external cooler 5 is arranged in the space 20. In addition, a first cooling pipe 16 is attached to a side surface of the external cooler 5, and the first cooling pipe 16 is connected to the lower tank 1b. Further, a second cooling pipe 17 is attached to the upper surface of the external cooler 5, and the second cooling pipe 17 is composed of a third cooling pipe 18 and a fourth cooling pipe 19. The fourth cooling pipe 19 extends vertically inside the upper tank 1a. The first cooling pipe 16 is attached near one end of the external cooler 5 in the width direction as shown in FIG. 4B, and the third and fourth cooling pipes 1 are provided.
Reference numerals 8 and 19 are attached near the other end of the external cooler 5 in the width direction.

As described above, since the space 20 is formed at the lower end of the tank 1 and the external cooler 5 is disposed in that space, the overall height of the stationary induction electric equipment can be reduced. In addition, since the cooling pipes 16, 18, and 19 are all connected below the tank 1, alignment and the like at the time of installation are easy.

The fourth cooling pipe 19 may be made of an insulating material. Thereby, the fourth cooling pipe 19 can be freely arranged even in the high voltage portion inside the tank 1. Therefore, the configuration shown in FIG. 4 can be obtained without increasing the width of the tank 1.

The place where the space 20 is formed is shown in FIG.
The location of the external cooler 5 is not limited to the location shown in FIG. The second cooling pipe 17
May be configured as a single pipe instead of the third cooling pipe 18 and the fourth cooling pipe 19.

[5. Fifth Embodiment] A fifth embodiment of the present invention is a stationary induction electric machine according to claim 8. FIGS. 5A and 5B are diagrams showing a configuration of the stationary induction electric device according to the present embodiment, wherein FIG. 5A is a front view, and FIG.
Is a side view thereof. As shown in these figures, a bushing 21 for connecting a cable (not shown) to the winding 3 is arranged above the tank 1.
A bushing mounting pocket 22 for mounting the bushing 21 is mounted on the upper side surface of the tank 1. The external cooler 5 is arranged in a space 23 below the bushing attachment pocket 22. Further, a first cooling pipe 16 is attached to a lower side surface of the external cooler 5, and the first cooling pipe 16 is connected to the lower tank 1b. Further, a second cooling pipe 17 is attached to an upper surface of the external cooler 5, and the second cooling pipe 17 is connected to a lower surface of the bushing attachment pocket 22.

As described above, since the external cooler 5 is disposed in the space 23 below the bushing mounting pocket 22 disposed above the tank 1, the height of the stationary induction electric device can be reduced.

[0043]

As described above, according to the present invention, since the external cooler and the cooling pipe are arranged so as not to exceed the width of the tank, it is not necessary to increase the size of the entire equipment, and the installation space is reduced. can do. In addition, since the connecting portions of the cooling pipes are located on the upper surface of the tank, below the tank, or the like, positioning at the time of installation can be facilitated.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a stationary induction electric device according to a first embodiment of the present invention, wherein (a) is a front view and (b) is a side view.

FIGS. 2A and 2B are diagrams showing a configuration of a stationary induction electric device according to a second embodiment of the present invention, wherein FIG. 2A is a plan view and FIG.

FIGS. 3A and 3B are diagrams showing a configuration of a stationary induction electric device according to a third embodiment of the present invention, wherein FIG. 3A is a plan view and FIG.

FIGS. 4A and 4B are diagrams showing a configuration of a stationary induction electric device according to a fourth embodiment of the present invention, wherein FIG. 4A is a plan view and FIG.

FIGS. 5A and 5B are diagrams showing a configuration of a stationary induction electric device according to a fifth embodiment of the present invention, wherein FIG. 5A is a front view and FIG.

6A and 6B are diagrams showing an example of a conventional stationary induction electric device, wherein FIG. 6A is a plan view and FIG. 6B is a side view.

FIG. 7 is a side view showing an example of a conventional stationary induction electric device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Tank 1a ... Upper tank 1b ... Lower tank 2 ... Iron core 3 ... Winding 4 ... Insulating cooling medium 5 ... External cooler 8 ... Upper cover 16 ... 1st cooling piping 17 ... 2nd cooling piping 18 ... 3rd Cooling pipe 19 ... Fourth cooling pipe 20,23 ... Space 21 ... Bushing 22 ... Bushing mounting pocket

Claims (8)

[Claims] 1. A tank for accommodating an induction device main body including an iron core and a winding together with an insulating cooling medium, an external cooler for cooling the insulating cooling medium, and a communication between the tank and the external cooler. A static induction electric device having a cooling pipe for circulating the insulating cooling medium, wherein the external cooler is disposed above the tank; and the cooling pipe is a lower surface of the external cooler and an upper member of the tank. And a second cooling pipe connected to a lower surface of the external cooler and arranged downward in the tank and extending to a lower portion of the induction device main body in the tank. A stationary induction electrical device comprising a pipe. A second cooling pipe connecting a lower surface of the external cooler to an upper surface of an upper member of the tank;
The stationary induction electric device according to claim 1, wherein the stationary induction electric device comprises: a cooling pipe of (i) and a fourth cooling pipe connected to a lower surface of an upper member of the tank. 3. The cooling pipe according to claim 1, wherein the first cooling pipe and the third cooling pipe are disposed along a surface of an upper member of the tank so as to also serve as a reinforcing member for the upper member. Item 3. The static induction electric device according to Item 2. 4. The stationary apparatus according to claim 2, wherein the fourth cooling pipe is disposed in a space formed between the induction device main body and the tank inside the tank. Induction electrical equipment. 5. A tank for accommodating an induction device body including an iron core and a winding together with an insulating cooling medium, an external cooler for cooling the insulating cooling medium, and communicating the tank with the external cooler. Wherein the tank has a shape in which a part of a lower end is cut away corresponding to a shape of the external cooler, A cooler is disposed in a space formed by a cut-out portion of the tank, and the cooling pipe connects a side surface of the external cooler to a side surface of the tank forming the space portion. Stationary induction, comprising: a cooling pipe; and a second cooling pipe connected to the upper surface of the external cooler and arranged upward in the tank, and extending to an upper portion of the induction device main body. Electric Qi equipment. 6. The second cooling pipe is connected to a third cooling pipe that connects an upper surface of the external cooler to a lower surface of the tank that forms the space, and is connected to the third cooling pipe. 6. The stationary induction electric device according to claim 5, wherein the stationary induction electric device comprises a fourth cooling pipe. 7. The stationary induction electric device according to claim 2, wherein the fourth cooling pipe is made of an insulating material. 8. A tank for accommodating an induction device main body including an iron core and a winding together with an insulating cooling medium, an external cooler for cooling the insulating cooling medium, and communicating the tank with the external cooler. And a cooling pipe for circulating the insulating cooling medium, wherein a bushing mounting member for mounting a bushing on an upper side surface of the tank is disposed, and the external cooler is provided with a bushing mounting member. A cooling pipe disposed in a space formed at a lower portion, the cooling pipe connecting a side surface of the external cooler and a side surface of the tank, a top surface of the external cooler, and the bushing mounting member; And a second cooling pipe connected to a lower surface of the stationary induction electric device.