JP5620236B2 - Metal closed switchgear - Google Patents

Description

Embodiments of the present invention relates to a metal enclosed type switchgear which can facilitate assembly operation.

  Generally, the metal closed type switchgear is partitioned into a circuit breaker room on the front side, a cable room on the back side, a busbar room, and the like (for example, see Patent Document 1). In the circuit breaker chamber, a circuit breaker unit equipped with a drawer type vacuum circuit breaker is incorporated (for example, see Patent Document 2).

  In the assembly of this type of metal closed type switchgear, as shown in FIG. 6, in the case of two-stage stacking, the upper part of the U-shape is formed in the width direction of the middle part, the lower part of the front side and the rear side of the box 1 respectively. The mounting plate 2a and the lower mounting plate 2b are fixed, and the L-shaped upper circuit breaker unit 4a and lower circuit breaker unit 4b on which the drawer type circuit breaker 3 is mounted are inserted from the back side. The upper circuit breaker unit 4a and the lower circuit breaker unit 4b are respectively an upper floor plate 4a1, a lower floor plate 4b1 to which the drawer type circuit breaker 3 moves, and an upper stage wall plate 4a2 and a lower stage wall plate to which a main circuit disconnection portion for three phases is fixed. 4b2.

  After the insertion, in the upper circuit breaker unit 4a, the upper floor plate 4a1 is fixed to the front upper mounting plate 2a with the upper bolt 5a, and the lower circuit breaker unit 4b is also connected to the lower mounting plate 2b on the front side with the lower floor plate 4b1. Secure with. Further, the upper protection cover 6a and the lower protection cover 6b having openings through which the front panel of the drawer-type circuit breaker 3 can be visually observed are also fixed to the upper mounting plate 2a and the lower mounting plate 2b on the front side, respectively.

  As a result, the upper breaker chamber 1a and the lower breaker chamber 1b can be formed in the box 1 by fixing the upper breaker unit 4a and the lower breaker unit 4b. The cable chamber 1c including the chamber can be formed. Since the cable chamber 1c is an area that involves final assembly work such as cable connection, a work space is secured. For this reason, the procedure of inserting and assembling the storage devices sequentially from the back side is adopted.

Japanese Patent Laid-Open No. 10-257613 JP 2001-16717 A

The conventional metal closed switchgear described above has the following problems.
Since the upper circuit breaker unit 4a and the lower circuit breaker unit 4b are inserted from the back side of the box 1 and fixed from the front side, there are work on the front side and work on the back side, and workability is inferior. It was.

The present invention has been made to solve the above problems, and insertion fixed breaker unit to the box body and one direction on the front side, providing a metal enclosed type switchgear with improved efficiency of assembly work The purpose is to do.

To achieve the above object, a metal closed switchgear according to an embodiment includes a box, a pair of guides that extend from the front side to the back side of the box, and that are fixed to side walls, and the pair of guides on the pair of guides. A breaker unit composed of a floor plate and a wall plate that move , a fixing means for fixing the floor plate of the breaker unit and the pair of guides with bolts from the front side, and a rear side of the floor plate of the breaker unit And a U-shaped stopper provided on the back side of the pair of guides sandwiching the fitting plate .

The figure explaining the assembly procedure of the metal closed type switchgear which concerns on Example 1 of this invention. The figure explaining the circuit breaker unit of the metal closure type switchgear concerning Example 2 of the present invention. The figure explaining the circuit breaker unit of the metal closure type switchgear concerning Example 3 of the present invention. The figure explaining the circuit breaker unit of the metal closure type switchgear concerning Example 4 of the present invention. The figure explaining the circuit breaker unit of the metal closure type switchgear concerning Example 5 of the present invention. The figure explaining the assembly procedure of the conventional metal closure type switchgear.

  Embodiments of the present invention will be described below with reference to the drawings.

  First, a metal closed switchgear according to Embodiment 1 of the present invention will be described with reference to FIG. FIG. 1 is a view for explaining an assembling procedure of a metal closed switchgear according to Embodiment 1 of the present invention. In FIG. 1, the same components as those in the prior art are denoted by the same reference numerals.

  As shown in FIG. 1, in the case of two-stage stacking, a pair of L-shaped upper guides 10a each extending in the depth direction extending from the front side to the back side are provided in the middle and lower portions of the side walls on both sides of the box 1; The lower guide 10b is fixed. The L-shaped upper circuit breaker unit 4a and lower circuit breaker unit 4b on which the drawer type circuit breaker 3 is mounted are fixed at the upper circuit board 4a1 and the lower circuit board 4b1 on which the drawer circuit breaker 3 moves and the main circuit disconnection portion for three phases. The upper stage wall board 4a2 and the lower stage wall board 4b2 are provided. Further, an upper protection cover 5a and a lower protection cover 5b having openings through which the front panel can be seen are provided on the front side of the drawer-type circuit breaker 3.

  In this assembly, the upper circuit breaker unit 4a and the lower circuit breaker unit 4b are lifted by a lifter or the like, placed on the upper guide 10a and the lower guide 10b, respectively, from the front side, and moved along these to be inserted. After the insertion, in the upper breaker unit 4a, the upper floor plate 4a1 is fixed to the screw hole provided in the front upper guide 10a with the upper bolt 5a, and the lower breaker unit 4b is also provided in the screw hole provided in the lower guide 10b on the front side. The lower floor board 4b1 is fixed with the lower bolt 5b. Further, an upper protection cover 6 a and a lower protection cover 6 b are fixed to the front side of the drawer type circuit breaker 3.

  As a result, the upper breaker chamber 1a and the lower breaker chamber 1b can be formed in the box 1 by fixing the upper breaker unit 4a and the lower breaker unit 4b. The cable chamber 1c including the chamber can be formed. That is, the chambers 1a, 1b, and 1c can be formed by assembling from one direction on the front side.

  Here, although the circuit breaker units 4a and 4b are fixed to the guides 10a and 10b, they may be fixed to a column or a side wall of the box 1 (not shown). Moreover, penetration of the bolts 5a and 5b may be from the circuit breaker units 4a and 4b, or from the box 1 side. These are referred to as fixing means for fixing the circuit breaker units 4a and 4b from the front side.

  According to the metal closed type switchgear of the first embodiment, a pair of guides 10a and 10b extending from the front side to the back side are provided on the side wall of the box body 1 and the front side along the guides 10a and 10b is provided. Since the circuit breaker units 4a and 4b are inserted and the circuit breaker units 4a and 4b are fixed from the front side, assembly work can be performed from one direction, and workability can be improved.

  Next, a metal closed switchgear according to a second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a diagram for explaining a circuit breaker unit for a metal closed switchgear according to a second embodiment of the present invention. The second embodiment differs from the first embodiment in that a protective cover is attached to the circuit breaker unit. In FIG. 2, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. In the case of two-stage stacking, the upper and lower tiers have the same configuration, and hence the following description will be made using the upper tier.

  As shown in FIG. 2, the upper protection cover 6 a is assembled to the upper floor plate 4 a 1 of the upper circuit breaker unit 4 a outside the box body 1 and inserted into the box body 1.

  According to the metal closed switchgear of the second embodiment, in addition to the effects of the first embodiment, the assembly work in the box 1 can be reduced, and the workability can be further improved.

  Next, a metal closed switchgear according to a third embodiment of the present invention will be described with reference to FIG. FIG. 3 is a diagram for explaining a circuit breaker unit for a metal closed switchgear according to a third embodiment of the present invention. The third embodiment differs from the second embodiment in that a control terminal is attached to the circuit breaker unit. In FIG. 3, the same components as those in the second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 3, the control terminal 11 which operates the drawer type circuit breaker 3 is attached to the side surface of the upper stage circuit breaker unit 4a. The control terminal 11 may be assembled inside the box 1 after the upper circuit breaker unit 4a is inserted and fixed, but the workability can be improved by assembling outside the box 1.

  According to the metal closed switchgear of the third embodiment, the same effect as that of the second embodiment can be obtained.

  Next, a metal closed switchgear according to a fourth embodiment of the present invention will be described with reference to FIG. FIG. 4 is a diagram for explaining a circuit breaker unit for a metal closed switchgear according to a fourth embodiment of the present invention. The fourth embodiment differs from the third embodiment in that a fitting plate is provided on the back side of the circuit breaker unit. In FIG. 4, the same components as those in the third embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 4, a plate-like fitting plate 12 is provided on the back side of the upper floor plate 4a1 of the upper circuit breaker unit 4a. In addition, a U-shaped stopper 13 that sandwiches the fitting plate 12 is provided on the back side of the upper guide 10a.

  According to the metal closed switchgear of the fourth embodiment, in addition to the same effects as those of the third embodiment, it is possible to align and fix the back side when the upper circuit breaker unit 4a is inserted.

  Next, a metal closed switchgear according to a fifth embodiment of the present invention will be described with reference to FIG. FIG. 5 is a diagram for explaining a circuit breaker unit for a metal closed switchgear according to a fifth embodiment of the present invention. The fifth embodiment is different from the fourth embodiment in that a rail is provided in the circuit breaker unit. In FIG. 5, the same components as those in the fourth embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 5, a pair of plate-like rails 14 are provided in the depth direction on the upper floor board 4a1 of the upper circuit breaker unit 4a. Further, on the front side, a bent portion 14a that is bent about 90 degrees is provided on the outside. The upper guide 10a is provided with a groove 15 in which the rail 14 moves and a square-shaped opening 16 in which the bent portion 14a abuts.

  According to the metal closed type switchgear of the fifth embodiment, in addition to the same effects as the fourth embodiment, the rail 14 is moved along the groove portion 15. Therefore, the upper circuit breaker unit 4a can be easily moved. it can. Further, the insertion portion can be aligned by bringing the bent portion 14 a into contact with the opening portion 16.

  According to the embodiment as described above, since the circuit breaker unit is inserted from the front side of the box and fixed on the front side, the assembling work is only from one direction on the front side, and the assembling work Can be improved.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Box 1a Upper circuit breaker room 1b Lower circuit breaker room 1c Cable room 2a, 2b Mounting plate 3 Pull-out type circuit breaker 4a, 4b Circuit breaker unit 4a1, 4b1 Floor board 4a2, 4b2 Wall board 5a, 5b Bolt 6a, 6b Protective cover 10a, 10b Guide 11 Control terminal 12 Fitting plate 13 Stopper 14 Rail 14a Bent part 15 Groove part 16 Opening part

Claims (2)

Box and
A pair of guides extending from the front side of the box to the back side and fixed to the side walls,
A circuit breaker unit composed of a floor plate and a wall plate moving on the pair of guides;
Fixing means for fixing the floor plate of the breaker unit and the pair of guides with bolts from the front side;
A fitting plate provided on the back side of the floor plate of the circuit breaker unit;
A U-shaped stopper provided on the back side of the pair of guides sandwiching the fitting plate;
A metal closed type switchgear characterized by comprising: Metal closed type switch gear according to claim 1, characterized in that fixed and a control terminal for controlling the draw-out type circuit breaker and a protective cover that protects the front panel of the drawer-type circuit breaker in the circuit breaker unit.

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