Switch gear

Abstract

To provide a switch gear in which an insulation barrier is disposed between adjacent power devices, ensuring that the deterioration of workability during maintenance and other operations can be reduced even if the switch gear has a relatively small space.SOLUTION: A switch gear 100 includes a casing 1 having an opening surface as a front surface, a plurality of power devices 2 arranged in a left-right direction in the casing 1, an insulation barrier 4 disposed between the plurality of power devices 2, and a rail 32 that is disposed in the casing 1 and holds the insulation barrier 4 to be movable in a forward direction.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a switchgear. [Background technology]

[0002] Patent Document 1 discloses a conventional switchgear. In the switchgear described in Patent Document 1, a plurality of electric power devices (circuit breakers in Patent Document 1) are arranged in a housing. Plate-shaped insulating barriers (phase-to-phase insulating barriers and phase-to-ground insulating barriers) are arranged between the electric power devices. The insulating barriers are fixed to a connector fixed to a fixed electrode. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2003-299211 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in the switchgear of Patent Document 1, the space between adjacent insulating barriers is relatively narrow, which causes problems in that the workability is poor and it is difficult for multiple people to install the insulating barriers. Also, when performing maintenance work on the power equipment, the space between adjacent insulating barriers is relatively narrow and the working space is limited, which causes problems in that, for example, it is difficult to clean hard-to-reach areas, and it is difficult to apply grease, etc.

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and has an object to provide a switchgear that can reduce impairment of workability during work such as maintenance, even in a switchgear that occupies a relatively narrow space, by disposing an insulating barrier between adjacent power devices. [Means for solving the problem]

[0006] A switchgear of one embodiment of the present invention comprises a housing having an opening on a front surface, a plurality of electric power devices arranged in a line in the left-right direction within the housing, an insulating barrier arranged between the plurality of electric power devices, and a rail provided on the housing for holding the insulating barrier so that it can move forward. Effect of the Invention

[0007] The switchgear of the above aspect of the present invention has an advantage that, by disposing an insulating barrier between adjacent power devices, impairment of workability can be reduced, for example, during maintenance or other work, even in a switchgear occupying a relatively narrow space. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a front view of the switchgear according to the embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic perspective view of a support device and an insulating barrier used in the switchgear according to the embodiment of the present invention. [Diagram 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. [Figure 4] FIG. 3 is a cross-sectional view taken along line BB in FIG. [Diagram 5] 10A and 10B are schematic side views illustrating the movement of an insulating barrier relative to a supporting device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] <Embodiment> The switchgear 100 according to the present embodiment is, for example, a receiving substation equipment installed in a facility such as a building or a factory. The switchgear 100 may be installed outdoors or indoors. The switchgear 100 preferably has a plurality of switchboards 10. Although not particularly shown, the switchgear 100 preferably has a plurality of switchboards 10 arranged in one direction, and adjacent switchboards 10 are connected to each other. As shown in FIG. 1, each switchboard 10 includes a housing 1, power equipment 2 installed in the housing 1, an insulating barrier 4 arranged between the power equipment 2, and a support device 3. As shown in FIG. 2, the support device 3 has a rail 32 that holds the insulating barrier 4 movably in the forward and backward directions.

[0010] With this configuration, the insulating barrier 4 can be moved forward, so that even if the distance between adjacent insulating barriers 4 is short, it is possible to reduce impairment of work such as maintenance of the power equipment 2 and assembly work during installation, thereby improving workability.

[0011] In the following, for the sake of convenience, the "left-right direction" is defined as shown in Fig. 1, the direction from the back to the front of the paper in Fig. 1 is defined as the "front-rear direction", and in particular, the direction from the back to the front in Fig. 1 is defined as the "front direction". In addition, the direction perpendicular to the left-right direction and the front-rear direction is defined as the "up-down direction". However, these definitions of directions are merely for the sake of explanation and are not intended to specify the manner of use.

[0012] In this specification, "parallel" refers not only to two straight lines, surfaces, etc. (hereinafter referred to as "straight lines") that do not intersect even when extended, but also to two straight lines, etc. that intersect at an angle of 10° or less. Additionally, "orthogonal" refers to two straight lines, etc. that intersect at an angle of 90°±10°. However, even if two straight lines, etc. do not intersect directly, if they intersect when extended, they are included in the term "orthogonal."

[0013] (Case 1) FIG. 1 shows a front view of one switchboard 10. The housing 1 is a box having a pair of side plates 11, a top plate 12, and a bottom plate 13, and has openings on the front and rear sides. The top plate 12 is a horizontal plate that is aligned along a horizontal plane above the electric power equipment 2. The bottom plate 13 is a horizontal plate that is aligned along a horizontal plane below the electric power equipment 2. The opening on the front side of the housing 1 is closed by a front door (not shown) in an openable and closable manner. The opening on the rear side of the housing 1 is closed by a rear door (not shown) in an openable and closable manner.

[0014] The material of the housing 1 is preferably a metal plate, but the material of the housing 1 is not limited to a metal plate and may be, for example, synthetic resin, carbon, glass, pottery, ceramics, or the like.

[0015] (Power equipment 2) The electric power device 2 is a device that is driven by receiving a supply of electric power. There are no particular limitations on the electric power device 2, and an example of the electric power device 2 is a disconnector having a fixed electrode and a movable electrode. An insulating barrier 4 is disposed between the parts of the adjacent electric power devices 2 that require insulation (here, the fixed electrode and the movable electrode).

[0016] (Support device 3) The support device 3 is attached to the housing 1 and holds the insulating barrier 4. As shown in Fig. 2, the support device 3 includes a plurality of mounting fixtures 31 attached to the housing 1, and a plurality of rails 32 fixed to the mounting fixtures 31. The support device 3 according to this embodiment is attached to the top plate 12 of the housing 1, as shown in Fig. 1.

[0017] The fixture 31 includes a fixing plate 311 fixed to the top plate 12, and a pair of posts 312 protruding downward from the fixing plate 311. Methods for fixing the fixing plate 311 to the top plate 12 include, for example, welding, screwing, riveting, bolts and nuts, etc. A rail 32 is attached to the lower end of the posts 312. Methods for attaching the rail 32 to the posts 312 include the same method as the method for fixing the fixing plate 311 to the top plate 12.

[0018] The multiple mounting fixtures 31 are arranged at intervals in the front-rear direction. Rails 32 extending in the front-rear direction are installed across the multiple mounting fixtures 31. The multiple rails 32 are arranged at intervals in the left-right direction.

[0019] 3, rail 32 holds insulating barrier 4. Rail 32 is preferably formed in a C-shape having an opening 321 on the lower surface in a cross section perpendicular to the longitudinal direction of rail 32. Opening 321 is formed in a slit shape extending in the front-rear direction. This allows slider 6 of insulating barrier 4, which will be described later, to be slidably suspended.

[0020] The rail 32 extending in the front-rear direction is preferably configured as a single rail 32 that is continuous in the front-rear direction. This allows the insulating barrier 4 to move smoothly in the front-rear direction. However, the rail 32 may be divided into multiple parts in the front-rear direction. The divided rail 32 may be connected, or may be separated by a distance shorter than the length of the slider 6 in the front-rear direction.

[0021] (Isolation Barrier 4) The insulating barrier 4 is disposed between adjacent pieces of power equipment 2. The insulating barrier 4 can insulate the adjacent pieces of power equipment 2 from each other. The insulating barrier 4 includes a slider 6 and an insulating barrier body 5, as shown in FIG.

[0022] The slider 6 moves along the rail 32. In a cross-sectional view, the slider 6 is preferably substantially T-shaped. However, the slider 6 may be, for example, L-shaped, Y-shaped, J-shaped, etc. An insulating barrier body 5 is suspended from the slider 6. The slider 6 moves forward relative to the rail 32, and when it passes an end of the rail 32 in the forward direction, it can be removed from the rail 32.

[0023] 2, the insulating barrier body 5 includes a first plate 51 disposed on the front side, a second plate 52 disposed on the rear side of the first plate 51, and a connecting member 53. The insulating barrier body 5 according to this embodiment is preferably a rigid plate body. The insulating barrier body 5 may be formed of a single plate material. The distance W1 between adjacent insulating barrier bodies 5 is, for example, 20 cm or more and 30 cm or less.

[0024] It is preferable that the length in the front-rear direction of the first plate 51 is smaller than the length in the front-rear direction of the second plate 52. This allows the worker to, for example, move the first plate 51 forward only to the minimum range required during work.

[0025] Examples of materials for the insulating barrier body 5 include synthetic resins, carbon, etc. From the perspective of the balance between ease of availability, ease of processing, and costs, it is preferable to use synthetic resins as the material for the insulating barrier body 5.

[0026] The connecting member 53 is a member that restricts the first plate 51 and the second plate 52 from moving apart in a direction perpendicular to the main surface. As shown in FIG. 4, a front end 531 of the connecting member 53 is fixed to the first plate 51 by a screw. A rear end 532 of the connecting member 53 is separated from the first plate 51. A front end of the second plate 52 is inserted between the rear end 532 of the connecting member 53 and the first plate 51. By configuring in this way, the connecting member 53 can prevent the first plate 51 and the second plate 52 from moving apart in the left-right direction in a state in which the rear end of the first plate 51 and the front end of the second plate 52 are overlapped. Also, when the first plate 51 is moved forward, only the first plate 51 can be moved while the second plate 52 remains.

[0027] 5, the slider 6 of the insulating barrier 4 can move in the front-rear direction relative to the rail 32, so that the insulating barrier body 5 can move in parallel in the front-rear direction relative to the rail 32. Therefore, even if the distance between adjacent insulating barriers 4 facing each other is short, it is possible to reduce impairment of the workability of maintenance work and the like for the electric equipment 2, and to improve the workability.

[0028] 1, the insulating barrier 4 in the installed state is connected to a fixing bracket 7 fixed to the bottom plate 13 of the housing 1. The fixing bracket 7 is formed in a substantially L-shape. The shielding plate 4 and the fixing bracket 7 are detachably connected by a connecting tool such as a screw. This makes it possible to prevent the insulating barrier 4 from moving when the electric power device 2 is in use.

[0029] <Modification> The above embodiment is merely one of various embodiments of the present invention. The embodiment can be modified in various ways depending on the design, etc., as long as the object of the present invention can be achieved. Modifications of the embodiment are listed below. The modifications described below can be applied in appropriate combination.

[0030] Although the rail 32 according to the above embodiment is attached to the top plate 12 via the fixture 31, the attachment target does not have to be the top plate 12 as long as it is a horizontal plate above the electric power equipment 2. For example, the rail 32 may be provided on the underside of a horizontal plate such as a shelf plate or a horizontal partition plate.

[0031] The rail 32 is attached to the housing 1 by the mounting fixture 31, but an upwardly recessed groove may be provided on the lower surface of the top plate 12, and the groove may serve as the rail 32. Alternatively, the rail 32 may be a protrusion provided on the bottom plate 13, which can sandwich the insulating barrier 4 and make the rail self-supporting.

[0032] The distribution board 10 may be, for example, a transformer secondary board, a busbar connection board, a power receiving board, a distribution line board, a transformer primary board, an in-house transformer board, a VCT board, etc., and can be applied as appropriate wherever insulation is required.

[0033] In the switchgear 100 of the above embodiment, a plurality of insulating barriers 4 are disposed between a pair of side plates 11, but a structure in which one insulating barrier 4 is disposed between a pair of side plates 11 may also be used. In this case, even if the distance between the side plate 11 and the insulating barrier 4 is short, a working space can be secured.

[0034] A hanging plate may be provided at the lower end of the insulating barrier body 5 as appropriate depending on the size of the electric power device 2. The hanging plate may be attached to the lower end of the insulating barrier body 5 so as to be slidable in the up and down direction, or may be fixedly provided.

[0035] In the above embodiment, the working space is secured mainly by moving the first plate 51, but both the first plate 51 and the second plate 52 may be moved forward.

[0036] In the insulating barrier 4 according to the above embodiment, the insulating barrier body 5 is formed of a rigid plate, but the present invention is not limited to this. For example, the insulating barrier body 5 may be formed of a flexible plate (flexible sheet) or the like. There is no particular limit to the thickness of the insulating barrier 4, but in this specification, a "plate" refers to a material having a thickness of 10% or less of the longer of the vertical and horizontal sides. For example, the insulating barrier 4 is considered to be a "plate" or "plate-shaped" material if it has a thickness of 10% or less of the length in the up-down direction.

[0037] <Summary> As described above, the switchgear 100 of the first embodiment comprises a housing 1 having an opening on the front side, a plurality of electric power devices 2 arranged in a line in the left-right direction within the housing 1, an insulating barrier 4 arranged between the plurality of electric power devices 2, and a rail 32 provided on the housing 1 to hold the insulating barrier 4 movably in the front-rear direction.

[0038] According to this embodiment, since the insulating barrier 4 can be moved forward, even if the distance between adjacent insulating barriers 4 is short, impairment of workability such as maintenance of the power devices 2 can be reduced, and workability can be improved. Therefore, by disposing the insulating barrier 4 between adjacent power devices 2, even in the switchgear 100 in which the space is relatively narrow, impairment of workability during work can be reduced.

[0039] In the switchgear 100 according to the second aspect, the housing 1 in the first aspect has a horizontal plate disposed above the multiple power devices 2, and the rails 32 are provided on the horizontal plate. According to this aspect, since the insulating barrier 4 is suspended by the rails 32, it is easy to move the insulating barrier 4 even if it is heavy.

[0040] In the switch gear 100 according to the third aspect, the insulating barrier 4 in the second aspect includes a slider 6 slidably mounted on the rail 32 and an insulating and a barrier body 5. According to this embodiment, a movable insulating barrier 4 can be configured simply by attaching the insulating barrier body 5 to which the slider 6 is attached to the rail 32. [Explanation of symbols]

[0041] 100 Switchgear 1 Case 2 Power equipment 3 Support device 31 Mounting fixture 32 Rail 4. Isolation Barrier 5 Insulation barrier body 51 1st board 52 2nd board 53 Connecting members 6 Slider

Claims

1. A housing having an opening on a front surface; A plurality of electric power devices arranged in the housing so as to be aligned in the left-right direction; an isolation barrier disposed between the plurality of power devices; a rail provided on the housing and configured to hold the insulating barrier so as to be movable in a front-rear direction; Equipped with Switchgear.

2. the housing has a horizontal plate disposed above the plurality of electric power devices, The rail is attached to the horizontal plate. The switchgear according to claim 1.

3. The shielding plate is a slider slidably attached to the rail; an insulating barrier body suspended from the slider; having The switchgear according to claim 2.

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