JP5421663B2 - switchboard - Google Patents

Description

  The present invention relates to a switchboard such as a closed switchboard in which circuit breaker units are accommodated in a plurality of stages, and more particularly to a structure of a branch bus chamber of a branch bus such as a vertical bus that distributes power to each circuit breaker unit.

Examples of conventional switchboards include those shown in FIGS. 5 and 6. FIG. 5 shows a cross-sectional side view, and FIG. 6 shows a cross-sectional plan view of an essential part taken along line VI-VI in FIG.
In each of these drawings, 1 is a switchboard such as a closed type switchboard and is divided into a circuit breaker chamber 2, a horizontal busbar chamber 3, a vertical busbar chamber 4, and the like. Reference numeral 5 denotes a cart floor plate in which the circuit breaker chamber 2 has a plurality of stages, for example, four stages, and is provided in each stage. Reference numeral 6 denotes a combination cart on which each combination floor 7 is mounted and a combination unit 7 is mounted. Reference numeral 8 denotes a horizontal bus arranged in the horizontal bus room 3. Reference numeral 9 denotes a vertical bus which is connected to the horizontal bus 8 at one end and distributes power to each combination unit 7 disposed in the vertical bus chamber 4. Reference numeral 10 denotes a vertical bus bar support for supporting the vertical bus bar 9. 11 is a soot tube. A combination unit 7 is constituted by a combination of a power fuse 7a and a VMC (vacuum connector).

  Reference numeral 12 denotes a pair of vertical bus bar frames for constituting the vertical bus bar chamber 4, which is formed in a U-shaped cross section, the front side protruding portion 12a is short, and the rear side protruding portion 12b is the front side protruding portion 12a. It is formed longer. A vertical bus 9 is arranged between the pair of vertical bus chamber frames 12. Reference numeral 13 denotes a rear surface side vertical bus partition plate provided on the inner side of the protruding portion 12b on the rear surface side of the pair of vertical bus chamber frames 12, and the tub tube 11 is inserted therethrough. Reference numeral 14 denotes a front side vertical bus partition plate provided on the outer side of the front side protruding portion 12a of the pair of vertical bus chamber frames 12, and the insulator 11 is inserted therethrough. The pair of vertical bus bar frames 12, the rear side vertical bus bar partition plate 13, and the front side vertical bus bar partition plate 14 constitute a vertical bus bar chamber 4 having a structure in which front and rear and right and left are partitioned.

  In the closed type switchboard 1 configured as described above, the reason why the rear vertical busbar partition plate 13 is attached to the inner side of the protruding portion 12b on the rear side of the vertical busbar frame 12 is as follows. When assembling, the rear side of the closed type switchboard 1 is laid downward and assembled. Therefore, it is based on the assembly procedure of attaching the rear surface side vertical bus-bar partition plate 13 to the inner side of the protrusion 12b on the rear surface side of the vertical bus bar frame 12 attached to the box frame of the closed type switchboard 1 first. The front-side vertical bus-bar partition plate 14 is attached to the outer side of the front-side protruding portion 12 a of the vertical bus-bar chamber frame 12.

  The vertical bus bar frame 12 is thicker than the rear side vertical bus bar partition plate 13 and the front side vertical bus bar partition plate 14 to increase the strength of the vertical bus bar chamber 4.

Japanese Patent Laid-Open No. 11-341614

In the conventional switchboard described above, when the vertical bus 9 and the vertical bus support 10 in the vertical bus chamber 4 are to be maintained, inspected, or replaced, the front-side vertical bus divider 14 is attached to the vertical bus chamber frame 12. It is necessary to remove from the protrusion part 12a of the front side.
Thus, in order to remove the front side vertical bus-partition plate 14 from the protrusion part 12a of the front side of the vertical bus-bar room frame 12, it is necessary to also remove the cart floor board 10, and the subject that much work time and labor are required. is there.

  This is because the rear surface side vertical bus bar partition plate 13 is attached to the inner side of the protrusion 12b on the rear surface side of the vertical bus bar frame 12, and the rear surface side vertical bus bar partition plate 13 cannot be removed. As a result, there is no choice but to remove the front side vertical busbar partition plate 14.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a switchboard that can easily perform maintenance and inspection in a vertical busbar room with a simple configuration.

Switchboard according to the invention, in a switchboard having a vertical generatrix disposed perpendicularly busbar chamber, the opposite to each other across the vertical bus, and a pair of vertical busbar chamber frame as a base of the vertical busbar chamber, the vertical generatrices A front-side vertical busbar partition plate that is attached to the rear surface side of the chamber frame and through which the soot pipe is inserted , and is supported by the vertical busbar chamber frame, and is formed in a U-shaped cross section so as to penetrate the soot pipe and cover the vertical busbar. A rear-side vertical busbar partition plate is provided.

  The switchboard according to the present invention can provide a switchboard that can be easily maintained and inspected in the vertical bus room with a simple configuration.

It is a principal part sectional top view which shows the switchboard concerning Embodiment 1 of this invention. It is a principal part perspective view which shows the switchboard concerning Embodiment 1 of this invention. It is a principal part sectional top view which shows the switchboard concerning Embodiment 2 of this invention. It is a principal part sectional top view which shows the switchboard concerning Embodiment 3 of this invention. It is a cross-sectional side view which shows the conventional switchboard. It is a principal part sectional top view in the conventional VI-VI line of FIG.

Embodiment 1.
A first embodiment of the present invention will be described below with reference to FIGS. 1 is a cross-sectional plan view of an essential part showing a switchboard according to Embodiment 1 of the present invention. FIG. 2 is a perspective view showing a main part of the switchboard according to the first embodiment of the present invention. FIG. 2 shows an embodiment corresponding to the case where the circuit breaker chamber 2 has, for example, a three-stage configuration.

  In these drawings, 9 is a vertical bus, that is, a branch bus, 10 is a vertical bus support, and 11 is a soot tube. Reference numeral 15 denotes a pair of vertical bus chamber frames, i.e., branch bus chamber frames, which are opposed to each other across the vertical bus 9 and serve as a base of the vertical bus chamber 4, i.e., the branch bus chamber. Reference numeral 16 denotes a front-side vertical bus partition plate or branch bus partition plate attached to the rear side of the vertical bus chamber frame 15, and 17 is supported by the vertical bus chamber frame 15 and is formed in a U-shaped cross section so as to cover the vertical bus 9. The rear vertical bus partition plate 17 has, for example, a mounting flange 17a and a through hole 17b through which the tub tube 11 passes, and the mounting flange 17a is attached to the front vertical bus partition plate 16. The case where it is supported by the vertical bus room frame 15 through the front side vertical bus partitioning plate 16 is shown.

  Note that the plate thickness of the vertical bus bar frame 15 is configured to be thicker than the plate thicknesses of the front side vertical bus bar partition plate 16 and the rear side vertical bus bar partition plate 17 to ensure the necessary strength to support the vertical bus bar chamber 4. Yes. Further, the vertical bus bar frame 15 is configured to have a minimum necessary, for example, an L-shaped cross section in order to minimize the thick material while ensuring the necessary strength.

  Next, the operation will be described. In the switchboard according to Embodiment 1 described above, assembling procedures, when assembling the closed type switchboard 1, the assembly workability may be deteriorated by putting the front side of the closed type switchboard 1 downward and assembling. No. That is, the front-side vertical bus divider 16 is attached to the rear side of the pair of vertical bus chamber frames 15 having an L-shaped cross section attached to the box frame of the closed type switchboard 1 first. The rear vertical bus partition plate 17 having a U-shaped cross section is supported by the vertical bus chamber frame 15 via the front vertical bus partition plate 16 by attaching the mounting flange 17a to the front vertical bus partition plate 16. The

  By the way, when performing maintenance, inspection, replacement, etc. of the vertical bus 9 and the vertical bus support 10 in the vertical bus chamber 4, it is only necessary to remove the rear vertical bus partitioning plate 17 as in the conventional case described above. Further, it is not necessary to remove the cart floor plate 10, and maintenance, inspection, replacement, and the like of the vertical bus bar 9 and the vertical bus bar support tool 10 can be easily and easily performed without requiring much work time and labor.

  Further, the vertical bus bar frame 15 is not a large vertical bus bar frame 12 with a thick U-shaped cross section as in the conventional case described above, but a plate that secures the strength necessary to support the vertical bus bar chamber 4 while securing the vertical bus bar frame 4. In order to reduce the thick material as much as possible, the vertical bus chamber frame 15 is configured to have a minimum required size, for example, an L-shaped section. Therefore, the material cost can be reduced and the weight can be reduced.

Embodiment 2.
A second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a cross-sectional plan view of an essential part showing a switchboard according to Embodiment 2 of the present invention.

  In the first embodiment described above, the rear vertical bus partition plate 17 is attached to the vertical bus chamber frame 15 via the front vertical bus partition plate 16 by attaching the mounting flange 17a to the front vertical bus partition plate 16. Although the case where it is supported has been described, in the second embodiment, the rear-side vertical busbar partition plate 17 is supported by attaching its mounting flange 17a to the vertical busbar frame 15 as described above. The same effects as in the first embodiment are obtained.

Embodiment 3.
A third embodiment of the present invention will be described with reference to FIG. 4 is a cross-sectional plan view of a main part showing a switchboard according to Embodiment 3 of the present invention.

In the second embodiment described above, the case where the rear vertical busbar partition plate 17 is supported by attaching the mounting flange 17a to the vertical busbar frame 15 has been described. In the third embodiment, the rear vertical vertical busbar partition plate 17 is supported. The mounting flange 17a of the bus bar partition plate 17 is not provided, and the rear surface side of the vertical bus bar partition plate 17 having an L-shaped cross section is formed on the rear surface side vertical bus bar partition plate 17 having a U-shaped cross section. It is attached to and supported by a portion protruding to the same, and has the same effect as each of the embodiments described above.
In each of the above embodiments, the case where the branch bus is a vertical bus has been described. However, the branch bus may be a cable.

  The present invention is suitable for realizing a switchboard that can be easily maintained and inspected in a vertical bus room with a simple configuration.

DESCRIPTION OF SYMBOLS 1 Power distribution board 4 Vertical bus-bar partition plate 9 Vertical bus-bar 10 Vertical bus-bar support 15 Vertical bus-bar frame 16 Front side vertical bus-bar partition plate 17 Rear side vertical bus-bar partition plate

Claims (4)

Mounting the switchboard having a vertical generatrix disposed perpendicularly busbar chamber, the opposite to each other across the vertical bus, and a pair of vertical busbar chamber frame as a base of the vertical busbar chamber, the rear side of the vertical busbar chamber frame a front-side vertical generatrix partition plate porcelain tube is inserted through is, the supported vertically busbar chamber frame, wherein the porcelain bushing has side vertical generatrix partition plate after being U-shaped cross section so as to cover the vertical bus with which inserted through A switchboard characterized by the provision of The switchboard according to claim 1, wherein the vertical bus bar frame has an L-shaped cross section. The rear surface side vertical generatrix partition plate, wherein attached to the front side vertical generatrix partition plate, through the front-side vertical generatrix partition plate in claim 1 or 2, characterized in that supported on the vertical busbar chamber frame The switchboard described. The switchboard according to claim 3, wherein the rear side vertical busbar partition plate has a mounting flange.

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