JP2003348715A - Box unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a proper structure for making airtight communicate the interiors of adjacent boxes. <P>SOLUTION: Openings 13, 14 are formed in a left-side plate 1a of the right- side box 1 and a right-side plate 1b of the left-side box 1. A flange 8, having the opening 8a, is welded to only the right-side plate 1b, and packing 4 is filled in a groove 8b that is formed so as to surround the opening 8a of the flange 8. In this state, a bolt 16, inserted in a through-hole 15, is screwed into a tap hole 8c, thus coupling the left-side plate 1a with the right-side plate 1b. <P>COPYRIGHT: (C)2004,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing unit having an improved connection between housings.

[0002]

2. Description of the Related Art FIG. 5 shows a gas insulated switchgear. In this configuration, devices such as a circuit breaker and a grounding switch are accommodated in a housing 1 and a plurality of such housings 1 are connected to each other. FIG. 6 shows the structure of the connecting portion between the housings 1. As shown in FIG. 7 in detail of the portion A in FIG. 6, openings having substantially the same size are formed in the left side plate 1a and the right side plate 1b of the housing 1, and correspond to the sizes of these openings. The outer peripheries of the flanges 2a and 2b are welded to the left and right plates 1a and 1b, respectively. A groove 3 is formed in the flange 2a, and a packing 4 is accommodated in the groove 3. And, at a position inside the groove 3 and corresponding to each other,
A tap hole 5a and an insertion hole 5b are formed at substantially equal intervals along the circumferential direction of the flanges 2a and 2b, and a bolt 6 inserted into the insertion hole 5b is screwed into the tap hole 5a. Thus, the inside of the housing 1 communicates with the inside of the flanges 2a and 2b.

[0003]

However, it is necessary to prepare two flanges, which increases the cost. In addition, since the portion to be hermetically welded is twice as long as the outer periphery of the flange and the distance is long, it takes time to attach the two flanges. Furthermore, since the thickness of the flange is larger than the thickness of the side plate, the width of the entire housing unit is increased.

[0004] Therefore, an object of the present invention is to provide a housing unit that solves such a problem.

[0005]

According to a first aspect of the present invention, there is provided a housing unit configured to form openings in a pair of side plates of an adjacent housing that abut against each other. A flange is connected to one of the side plates and a groove surrounding the opening is formed on the other side plate side of the flange, and a seal member is disposed in the groove and disposed inside the seal member. Characterized in that the flange and the other side plate are connected via the connecting means.

In such a housing unit, a single flange is sufficient, and the portion to be welded is equivalent to one flange. Also,
Since the flange is attached to only one side plate, the width of the entire housing unit is reduced. .

According to a second aspect of the present invention, there is provided a housing unit, wherein an opening is formed in each of a pair of side plates abutting each other on adjacent housings, and a flange is arranged between the pair of side plates.
A groove surrounding the opening is formed on both surfaces of the flange, and in a state where the seal member is disposed in the groove, the flange and both side plates are connected to each other via coupling means disposed inside the seal member. It is characterized by being combined.

In such a housing unit, a single flange is sufficient, and there is no need for welding.

According to a third aspect of the present invention, the pair of grooves formed on both surfaces of the flange are formed as a single slit penetrating the flange, and a single slit is formed in the slit. It is characterized in that a seal member is arranged.

[0010] In such a housing unit, since the portion into which the seal member is fitted is formed as a slit, the concept of forming a groove on both sides of the flange is eliminated, and not only a single packing is sufficient, but also the thickness of the flange and the like is reduced. t becomes smaller.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which a housing unit according to the present invention is applied to a gas insulated switchgear will be described below.

(A) First Embodiment First, a first embodiment is shown in FIG. As shown in FIG. 1, when the left side plate 1a of the right side case 1 and the right side plate 1b of the left side case 1 abut against each other, the left side plate 1a and the right side plate 1b have a positional relationship as shown in the figure. An opening 13 is provided in the left side plate 1a.
On the other hand, an opening 14 larger than the opening 13 is formed in the right side plate 1b. The flange 8 is fitted and welded to the opening 14, and the inner surface of the opening 8 a formed by the flange 8 corresponds to the inner surface of the opening 13.

A groove 8 is provided in the flange 8 on the left side plate 1a side.
b is formed. The groove 8b is provided so as to surround the opening 8a. A coupling means is provided for coupling the flange 8 and the left side plate 1a with the packing 4 fitted in the groove 8b. As a connecting means, the left side plate 1a
The flange 8 has a tap hole 8c formed therein. These insertion holes 15 and tap holes 8c are arranged at substantially equal intervals along a line inside the groove 8b and parallel to the groove 8b, and the bolts 16 inserted into the respective insertion holes 15 are It is screwed into the tap hole 8c.

In such a gas insulated switchgear, the flange 8
Is sufficient, there is no need to prepare two flanges as in the prior art. In addition, the portion to be hermetically welded is equivalent to one flange, so that the welding distance can be short. For this reason, distortion due to welding is reduced, and the reliability of the packing 4 is improved. Further, since the flange is attached to only one of the side plates, the increase in the width of the entire housing unit can be reduced by half compared to the conventional case.

(B) Second Embodiment Next, a second embodiment is shown in FIG. In this embodiment,
The flange is sandwiched between both side plates without welding.

As shown in the figure, a left side plate 1a and a right side plate 1b
The same thing as the left side plate 1a of FIG. 1 is used. And the flange 9 is arrange | positioned between both side plates. The inner and outer diameters of the flange 9 are substantially the same as those in FIG.
Grooves 9b, 9b are formed on both sides on the outside of the flange 9, and tap holes 9c are formed on the inside of the grooves 9b, 9b at equal intervals in the circumferential direction as in the case of FIG. Then, the bolt 15 inserted into the insertion hole 15 of the left side plate 1a
And the bolt 15 inserted into the insertion hole 15 of the right side plate 1b are screwed into the same tap hole 9c, and the pair of packings 4 are compressed.

In such a gas insulated switchgear, the flange 8
Is sufficient, there is no need to prepare two flanges as in the prior art. Further, since there is no need to perform hermetic welding, the production becomes easy. Further, since the left and right side plates may be processed in the same manner, the processing is easy.

(C) Third Embodiment Next, a third embodiment is shown in FIG. In this embodiment,
Since a part of the second embodiment is changed, only different parts will be described.

As shown in the figure, the positions of the grooves 9b formed on both surfaces of the flange 9 are shifted in the vertical direction in the figure.
The thickness t of the flange 9 can be made smaller than in the case of FIG.

The other configuration and operation are the same as those of the second embodiment, and the description is omitted.

(D) Fourth Embodiment Finally, a fourth embodiment is shown in FIG. In this embodiment, a part of the third embodiment is changed, and only different parts will be described. In this embodiment, a single packing 4 is sufficient instead of the two packings 4 in FIG.

As shown in the figure, a flange 11 and a ring 1 are formed to form a single slit 10 instead of a pair of grooves 9b.
2 are provided. In the flange 11, a tap hole 11a corresponding to the tap hole 9c in FIG. 3 is formed. The packing 4 is inserted into the slit 10 and the bolts 16 inserted into the insertion holes 15 from both sides are alternately tapped holes 11a.
, The left side plate 1a and the right side plate 1b are connected via the flange 11 and the ring 12.

In such a gas insulated switchgear, the packing 4
The groove is formed on both sides of the flange because the portion into which the groove is fitted is replaced with a groove. This eliminates the concept of forming a groove on both sides of the flange.
1 and the thickness t of the ring 12 can be made much smaller than those in FIGS.

The other configuration and operation are the same as those of the third embodiment, and the description is omitted.

The housing unit may be any unit as long as it is a combination of a plurality of housings, and can be applied not only to a gas insulated switchgear but also to various devices.

[0026]

As can be seen from the above description, claim 1
According to the above housing unit, since the flange is connected to only one of the side plates, the portion to be hermetically welded is equivalent to one flange, so that the welding distance is approximately half as compared with the conventional case. For this reason, distortion due to welding is reduced, and the reliability of the seal member is improved. Furthermore, since the flange is attached to only one of the side plates, the increase in the width of the entire housing unit can be reduced to approximately half of the conventional case.

According to the housing unit of the second aspect, since the flange is not connected to the side plate, it is not necessary to perform the hermetic welding, the manufacturing labor is reduced, and the distortion due to the welding is eliminated.

According to the third aspect of the present invention, the sealing member is fitted into the slit, so that only one sealing member is required, and the thickness of the flange is reduced by that much, so that the housing unit is reduced. It becomes smaller in the width direction.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a main part of a first embodiment of a housing unit according to the present invention.

FIG. 2 is a sectional view showing a main part of a housing unit according to a second embodiment of the present invention.

FIG. 3 is a sectional view showing a main part of a housing unit according to a third embodiment of the present invention.

FIG. 4 is a sectional view showing a main part of a housing unit according to a fourth embodiment of the present invention.

FIG. 5 is a front view showing a conventional housing unit.

FIG. 6 is a cross-sectional view showing a joint portion of a housing in a conventional housing unit.

FIG. 7 is an enlarged view of a portion A in FIG. 6;

[Explanation of symbols]

1 ... housing 1a Left side plate 1b ... right side plate 4… Packing 8 ... Flange 8a, 13 ... opening 8b ... groove 16 ... bolt

   ────────────────────────────────────────────────── ─── Continuation of front page    F-term (reference) 4E360 AB12 AB18 AB20 AB32 AB33                       EC04 ED02 ED17 ED23 ED27                       GA42 GA52 GA53 GB99 GC08                 5G016 AA04 DA42                 5G017 AA22 GG01 GG02

Claims (3)

[Claims] An opening is formed in each of a pair of side plates of an adjacent housing that abut against each other, a flange is connected to one of the side plates, and the opening is formed on the other side plate side of the flange. A housing unit in which a surrounding groove is formed, and the flange and the other side plate are coupled via coupling means disposed inside the seal member in a state where the seal member is disposed in the groove. . 2. An opening is formed in each of a pair of side plates of an adjacent housing that abut against each other, a flange is disposed between the pair of side plates, and a groove surrounding the opening is formed on both surfaces of the flange. A housing unit, wherein the flange and the two side plates are connected to each other via a connecting means disposed inside the seal member in a state where the seal member is formed in the groove. 3. A pair of grooves formed on both sides of the flange as a single slit penetrating the flange,
The housing unit according to claim 2, wherein a single seal member is disposed in the slit.