JP2591465Y2 - Capacitor equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large-capacity capacitor equipment constituted by accommodating a small capacity and a plurality of internal capacitors in a closed container.

[0002]

2. Description of the Related Art Conventionally, as this kind of capacitor equipment, a plurality (four in the figure) of internal capacitors 1 arranged in parallel with each other as shown in simplified form in FIGS. And a closed container 3 for accommodating the internal capacitor 1 and the support frame 2, and is made of metal manufactured in a cylindrical shape with both ends closed. Is sealed with an insulating medium (not shown) such as insulating oil or SF ₆ gas, and is set to a ground potential. A drawer bushing 1a extends from the upper end of each of the internal capacitors 1. The connection conductor 4 connecting the drawer bushings 1a is connected via an insulating spacer 5 attached to an end face of the closed casing 3. It has been extended to the outside.

At this time, a plurality of (four in the figure) insulating support members 6 are interposed between the support gantry 2 and the closed container 3 in a parallel state separated from each other by a predetermined distance.
The lower end 2a of the support base 2 and the support fitting 3a provided on the inner surface of the closed casing 3 are connected via each of the insulating support members 6. That is, as shown in an enlarged manner in FIG. 5, all of the insulating support members 6 are integrated with a pair of connecting metal fittings 7 that are arranged in a spaced-apart shape facing each other and bury the opposing portions of these connecting metal fittings 7. And a pair of bolts 9 screwed into tap holes (not shown) formed on the outer end surfaces of the connection fittings 7. The lower end 2a of the support base 2 and the support fitting 3a, which are in contact with the outer end surface of each connection fitting 7 and are tightened by the bolt 9, are firmly fixed via the insulating support member 6. ing.

[0004]

In the above-described conventional capacitor equipment, the internal capacitor 1 generates heat during operation, so that a temperature difference occurs inside and outside the sealed container 3 in which the insulating medium is sealed. become. When such a temperature difference occurs, the support base 2 in a state of supporting the internal capacitor 1 and being wrapped by the insulating medium, and a sealed state in which the outer surface is exposed to the atmosphere and cooled. The magnitude of the thermal expansion generated differs from that of the container 3, and a displacement (displacement) based on the difference in the magnitude of the thermal expansion occurs in the parallel direction of the internal capacitors 1.

However, at this time, the support base 2 and the closed vessel 3 are connected to each other via the insulating support members 6 arranged in parallel and fixed to each other. As a result of the displacement being hindered by the insulating support members 6, the stress caused by the displacement generated between the support base 2 and the closed vessel 3 is applied intensively to each of the insulating support members 6. I will.
When such a stress is applied, the insulating support member 6 may be damaged, and the performance of the capacitor facility may be impaired.

[0006] The present invention has been made in view of such inconvenience, and is intended for a case in which a displacement occurs due to a difference in the magnitude of thermal expansion between a support base and a closed container due to heat generation of an internal capacitor. Even if there is a problem, an object of the present invention is to provide a capacitor facility that does not cause breakage of the insulating support member and, consequently, deterioration of its own performance.

[0007]

The capacitor equipment according to the present invention comprises a plurality of internal capacitors arranged in parallel with each other, a support frame on which these internal capacitors are mounted collectively, an internal capacitor and the support frame. It is provided with a closed container for storing, and a plurality of insulating support members are interposed between the support base and the closed container, and one end of one insulating support member has a support base and a support base. One end of each of the other insulating support members is fixed to one of the support gantry and the closed container, and the other end is a support gantry. And is slidably contacted with the other of the sealed container.

[0008]

According to the above construction, each of the other insulating support members interposed between the support base and the closed container, that is, each of the other insulating support members except the insulating support member fixing the support base and the closed container, , Each one end of which can freely move with respect to the other while the displacement of either the fixed support base or the sealed container is fixed, and these insulating support members can be displaced between the support base and the closed container. Does not occur. Therefore, no stress is generated due to the displacement between the support base and the closed vessel, and the generated stress is not concentrated on each of the insulating support members.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an enlarged fragmentary sectional view showing an insulating support member provided in the capacitor equipment according to the present embodiment, and FIG. 2 is a partial broken sectional view showing a modification of the insulating support member. . Since the overall configuration of the capacitor equipment according to the present embodiment is not fundamentally different from that of the conventional example, the description of the overall configuration and common parts and parts will be described with reference to FIG.
5 to FIG. 5, and a detailed description thereof will be omitted.

As in the prior art, the capacitor equipment according to the present embodiment includes a plurality (four in the figure) of internal capacitors 1 arranged in parallel with each other and a support base on which these internal capacitors 1 are mounted collectively. 2 and an airtight container 3 for accommodating the internal condenser 1 and the support base 2,
A plurality (4 in the figure) is provided between the support base 2 and the closed container 3.
) Are interposed in parallel with each other at a predetermined interval. One of the insulating support members 6 and 10 is the same as that shown in FIG.
Similarly, as shown in FIG. 5, a pair of connecting metal fittings 7 which are arranged to be spaced apart from each other, a resin molded product 8 made of epoxy resin or the like which embeds and integrates the facing portions of these connecting metal fittings 7 respectively, and each connecting metal fitting 7 is formed by combining a pair of bolts 9 screwed into tap holes (not shown) formed on the outer end surface of the insulating support member 6. The lower end 2a of the support base 2 and the support fitting 3a, which are in contact with the outer end surface of each connection fitting 7 and then fastened by the bolt 9, are connected via the insulating support member 6 and are fixed to each other. I have.

On the other hand, as shown in FIG. 1, each of the other insulating support members 10 except the insulating support member 6 has a pair of connecting metal members 7, 11 which are opposed to each other and are spaced apart from each other.
A resin molded product 8 made of epoxy resin or the like, which embeds and integrates opposing portions of the connection fittings 7 and 11, and a tap hole formed on the outer end surface of the connection fitting 7 located on the upper side (shown in the figure). (Not shown). At this time, the outer end surface of the connection fitting 7 located on the upper side and serving as one end of each of the insulating support members 10 is brought into contact with the lower end 2a of the support base 2. Both are connected to each other by tightening using bolts 9 and then fixed to each other. The other end of each of the insulating support members 10, that is, the outer end surface of the connecting fitting 11 located on the lower side after forming each of the insulating support members 10 is formed in a planar shape,
It is placed on the upper surface of the support fitting 3 a disposed on the inner surface of the closed container 3 and is slidably contacted.

Therefore, a temperature difference occurs between the inside and outside of the sealed container 3 due to the heat generated by the internal capacitor 1 constituting the capacitor equipment, and the displacement between the support base 2 and the sealed container 3 based on the temperature difference causes the parallel connection of the internal capacitor 1. When it occurs along the direction, each of the insulating support members 10 in which one of the connection fittings 7 is fixed to the support base 2 can move according to the displacement of the support base 2 while sliding on the support base 3a. That is, these insulating support members 10 do not hinder the displacement between the support gantry 2 and the closed vessel 3. That is, in FIG. 3, since the insulating support member 6 for fixing and supporting both the support gantry 2 and the closed vessel 3 is interposed on the rightmost side, the support gantry 2 is displaced to the left.

It should be noted that the interposition position of the insulating support member 6 for fixing the support base 2 and the sealed container 3 is not necessarily limited to a specific position. It goes without saying that the intermediary is performed. In the above description, the insulating support member 1
The connection fitting 7 located on the upper side of 0 is connected to the support base 2. For example, while the connection fitting 7 to which the bolt 9 is screwed is provided on the lower side and fixed to the support fitting 3a, It is also possible to slidably support the lower end 2a of the support base 2 by the connection fitting 11 arranged on the upper side.

By the way, the configuration shown in this embodiment,
In other words, when the connecting metal member 11 constituting the insulating support member 10 is configured to slide on the metal supporting metal member 3a, metal foreign matter (not shown) is generated due to friction between the metal members. In addition, if the generated metal foreign matter is floating in the insulating medium, the insulating performance of the capacitor equipment may be deteriorated. Therefore,
As in the modification shown in FIG. 2, a coating 12 made of a material that is easy to slide on the surface of the support fitting 3 a on which the connecting fitting 11 disposed below the insulating support member 10 slides, for example, a silicone resin coating or Teflon Covering with a sheet, Teflon coating, or the like is also conceivable, and when such treatment is performed, there is a practical advantage that it is possible to prevent the occurrence of metal foreign matter beforehand.

[0016]

As described above, one of the insulating supporting members in the capacitor equipment according to the present invention is fixed by connecting the supporting frame and the closed vessel to each other, while the other insulating supporting members are respectively the supporting frame and the supporting frame. It is slidably brought into contact with one of the closed containers. Therefore, each of the other insulating support members when the displacement due to the temperature difference occurs between the support gantry and the closed container, that is, each of the other insulating support members except the insulating support member for fixing the support gantry and the closed container is fixed. As a result, the insulated support members do not hinder the displacement between the support base and the closed vessel.

Therefore, no stress is generated due to the displacement being hindered between the support base and the closed vessel, and the stress caused by the generated displacement is concentrated on each insulating support member. Disappears.
As a result, it is possible to obtain an effect that damage to the insulating support member, which may occur in the conventional example, and deterioration of the performance of the capacitor equipment due to the damage do not occur.

[Brief description of the drawings]

FIG. 1 is a partially broken cross-sectional view showing, on an enlarged scale, an insulating support member provided in a capacitor facility according to the present embodiment.

FIG. 2 is a partially broken sectional view showing a modification of the insulating support member.

FIG. 3 is a cross-sectional view showing the overall configuration of the capacitor equipment according to the present embodiment and the conventional example as viewed from the front side.

FIG. 4 is a cross-sectional view showing a state where the entire configuration of the capacitor facility is viewed from a side.

FIG. 5 is a partially broken cross-sectional view showing, on an enlarged scale, an insulating support member provided in a capacitor facility according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Internal capacitor 2 Support base 3 Airtight container 6 Insulation support member 10 Insulation support member

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Tatsushi Inoue 47, Umezu Takaune-cho, Ukyo-ku, Kyoto-shi Nissin Electric Machinery Co., Ltd. (58) Field surveyed (Int.Cl. ⁶ , DB name) H01G 4/38 H01G 2/02 H01G 4/224

Claims (1)

(57) [Scope of request for utility model registration] 1. A plurality of internal capacitors (1) arranged in parallel with each other, a support frame (2) on which these internal capacitors (1) are mounted collectively, an internal capacitor (1) and a support frame (1). Capacitor equipment comprising a closed container (3) for accommodating 2), and a plurality of insulating support members (6, 10) interposed between the support base (1) and the closed container (3). And one end of each of the insulating support members (6) is fixed to the support base (1) and the closed container (3), and each of the other insulating support members (10) is , One end of which is fixed to one of the support stand (1) and the closed vessel (3), and the other end of the support stand (1) and the closed vessel (3). Characterized by being slidably abutted against the other. Capacitor equipment.