Compact centrally installed switchgear

Abstract

The utility model relates to the technical field of electrical equipment, in particular to a compact centrally installed switchgear, which comprises a switchgear body and an instrument door arranged on the front surface of the switchgear body, a bus chamber is arranged in the switchgear body, and a vertically arranged busbar is arranged in the bus chamber; limiting mechanisms for limiting the opening angle of the instrument door are arranged on the instrument door and the cabinet body. The centrally installed switchgear provided by the utility model is compact in structure, can reduce the width of the switchgear body under the condition of meeting the requirement of an inter-phase safe distance, can be better suitable for a power distribution environment with a limited space, and is high in practicability; meanwhile, the opening angle of the cabinet door can be limited and adjusted to avoid collision damage of the instrument door.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical equipment technical field, concretely is a compact type middle -placed cabinet. BACKGROUND

[0002] The width of the existing 10KV middle -placed cabinet is usually designed as 800 or 1000mm to meet the industry standard that air spacing is not less than 125mm. But in some use environment, due to the limitation of site condition, need to arrange distribution equipment as many as possible in limited space, need the width of middle -placed cabinet to be as small as possible, so 550mm wide middle -placed cabinet is pushed out, so that the requirement that distribution equipment is arranged more can be met as far as possible in limited space.

[0003] But if multiple 10KV middle -placed cabinets are arranged according to the conventional transverse, due to the reduction of cabinet width, the spacing between the busbars of different cabinet bodies is also reduced, and the safety requirement of 125mm spacing can not be met, so composite insulating material needs to be added, which increases the cost, and at the same time, the composite insulating material has the risk of aging, which can cause the insulation performance to no longer meet the safety requirement in the use process, and there is a safety hazard.

[0004] At the same time, the instrument door of the middle -placed cabinet is provided with various electrical instruments, if the opening angle of the instrument door is too large, it is easy to cause the instrument door to open too much, and collision with the adjacent switch cabinet can cause damage to the instrument. INVENTION CONTENTS

[0005] The utility model solves the technical problem to provide a compact type middle -placed cabinet, has smaller cabinet width under the requirement of safety phase distance, can be better applicable to restricted environment, and the limiting mechanism of opening angle is arranged to the instrument door, to avoid the collision of opening angle too large and adjacent cabinet body.

[0006] The utility model provides a basic scheme:

[0007] A compact type middle -placed cabinet, including cabinet body and the instrument door being located at the front of cabinet body, be equipped with the busbar room in the cabinet body, be equipped with the vertical busbar in the busbar room, the limiting mechanism of the instrument door and cabinet body is limited to the opening angle of instrument door.

[0008] Further, the busbars include an A-phase busbar, a B-phase busbar and a C-phase busbar, the side surface of the busbar chamber is provided with an A-phase outgoing busbar interface, a B-phase outgoing busbar interface and a C-phase outgoing busbar interface, the side surface of the cabinet is provided with an opening through which the busbar passes, the cabinet is provided with a circuit breaker chamber, the back plate of the circuit breaker chamber is provided with an A-phase contact box, a B-phase contact box and a C-phase contact box, the A-phase busbar is connected with the A-phase contact box and the A-phase outgoing busbar interface respectively, the B-phase busbar is connected with the B-phase contact box and the B-phase outgoing busbar interface respectively, and the C-phase busbar is connected with the C-phase contact box and the C-phase outgoing busbar interface respectively.

[0009] Further, the A-phase busbar includes a first vertical connecting busbar and a first horizontal connecting busbar, the B-phase busbar includes a second vertical connecting busbar and a second horizontal connecting busbar, and the C-phase busbar includes a third horizontal connecting busbar, a third vertical connecting busbar and a fourth horizontal connecting busbar.

[0010] Further, the cross-sectional dimension of the busbar is 60mm*10mm.

[0011] Further, the carrying capacity of the busbar is not less than 1250A.

[0012] Further, the distance between the A-phase busbar, the B-phase busbar and the C-phase busbar is not less than 125mm.

[0013] Further, the busbar and the cabinet are insulated and separated by a threading sleeve.

[0014] Further, the limiting mechanism includes a limiting plate, a limiting sliding groove, a first connecting part and a second connecting part, the inner side of the instrument door is provided with a horizontal first mounting strip, the right end of the first mounting strip is provided with a mounting hole, the lower part of the cabinet is provided with a second mounting strip with an inverted L-shaped cross section, the limiting sliding groove is arranged on the horizontal surface of the second mounting strip, both ends of the limiting plate are provided with openings, one end of the limiting plate is movably connected with the first mounting strip through the first connecting part and the mounting hole, the other end of the limiting plate is movably connected with the limiting sliding groove through the second connecting part, when the instrument door does not reach the maximum opening angle, the second connecting part can move in the limiting sliding groove, and when the instrument door reaches the maximum opening angle, the second connecting part is fixed in the limiting sliding groove.

[0015] Further, the first connecting part comprises a first nut and a stepped bolt, the stepped bolt comprises a stepped portion and a stud, the stud is connected with the first nut by penetrating through the opening of one end of the limiting plate and the mounting hole of the first mounting strip, and the diameter of the stepped portion is larger than that of the opening of the limiting plate; the second connecting part comprises a second nut, a stepped sleeve and a bolt, the stepped sleeve comprises a first sleeve and a second sleeve with different diameters and a trapezoidal transition portion, and the bolt is connected with the second nut by penetrating through the stepped sleeve and the opening of the other end of the limiting plate in sequence; the limiting sliding groove comprises a strip-shaped sliding groove and a terminal opening, the width of the strip-shaped sliding groove is greater than the outer diameter of the second sleeve and smaller than the outer diameter of the first sleeve, and the diameter of the terminal opening is greater than the outer diameter of the first sleeve.

[0016] Further, the right end mounting hole of the first mounting strip is 3, and is arranged at intervals along the horizontal direction of the first mounting strip.

[0017] The principle and advantages of the utility model lie in: the form of generally horizontally arranging busbars is changed into vertically arranging, cooperating with the structure size design of each phase busbar, the width of the central distribution cabinet is effectively reduced while ensuring the phase-to-phase safety distance, the width of the central distribution cabinet adopting the vertical busbar can reach 550 mm, more central distribution cabinets can be arranged in the case that the space of the distribution room is limited, and the capacity of the distribution system is improved. Meanwhile, adjacent central distribution cabinets can be arranged closely and enough electrical safety distance is ensured, composite insulation material is not needed to be increased, the use cost is reduced, and the safety hidden danger caused by aging of the composite insulation material can be avoided.

[0018] Meanwhile, the limiting mechanism of the opening angle of the instrument door is also designed, and the damage of the instrument door caused by the too large opening angle and the collision with the adjacent cabinet body can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a left front side view of the central distribution cabinet;

[0020] Figure 2 It is a right front side view of the vertical busbar;

[0021] Figure 3 It is a structural schematic view of the vertical busbar;

[0022] Figure 4 It is a structural schematic view of the limiting mechanism of the instrument door;

[0023] Figure 5 It is a connecting schematic view of the limiting plate;

[0024] Figure 6 It is a structural schematic view of the stepped sleeve. DETAILED DESCRIPTION

[0025] The conventional middle cabinet is divided into a small current middle cabinet and a large current middle cabinet. The large current middle cabinet refers to a middle cabinet with a rated current of 2000A and above, and the cabinet width is 1000mm at this time. The small current middle cabinet refers to a middle cabinet with a rated current of 1250A and below, and the cabinet width is 800mm at this time. The safety electrical distance between each phase of the middle cabinet needs to be ensured to be not less than 125mm. Limited by the area of the power distribution room, when the power system installed in one power distribution room contains a large number of middle cabinets, the overall arrangement width of the middle cabinets is easy to exceed the width range of the power distribution room. Therefore, the application provides a compact middle cabinet, and the cabinet width can be reduced to 550mm, so that more middle cabinets can be placed without changing the overall design of the power distribution room.

[0026] The specific embodiments are further described in detail below:

[0027] The marks in the drawings of the specification include: an instrument room 1, a busbar room 2, an outgoing row interface 3, a first vertical connection row 4, a threading sleeve 5, a first horizontal connection row 6, a second horizontal connection row 7, a second vertical connection row 8, a fourth horizontal connection row 9, a third vertical connection row 10, a third horizontal connection row 11, a contact box 12, an instrument door 13, a first mounting strip 14, a first connecting part 15, a limiting plate 16, a second mounting strip 17, a limiting sliding groove 18, a second connecting part 19, a first nut 20, a stepped bolt 21, a second nut 22, a stepped sleeve 23, a bolt 24, a first sleeve 25, a transition part 26, and a second sleeve 27.

[0028] Embodiment one

[0029] As shown in Figure 1 The middle cabinet includes a cabinet body and an instrument door 13 arranged on the front of the cabinet body. The cabinet body is internally provided with an instrument room 1, a circuit breaker room, a busbar room 2 and a cable room. The upper part of the front of the cabinet body is the instrument room 1, and the lower part is the circuit breaker room; the upper part of the back of the cabinet body is the busbar room 2, and the lower part is the cable room.

[0030] The back plate of the circuit breaker room is provided with a contact box 12, including an A-phase contact box, a B-phase contact box and a C-phase contact box.

[0031] The busbar room 2 is internally provided with vertically arranged busbars, including an A-phase busbar, a B-phase busbar and a C-phase busbar, and the structure is as shown in Figure 3As shown. Among them, the A-phase busbar includes the first vertical connecting row 4 and the first horizontal connecting row 6, the first vertical connecting row 4 is vertically L-shaped, the lower end is connected with the A-phase contact box, the upper end is bent back by 90 degrees to form a first bending part, the end of the first bending part is bent by 90 degrees along the horizontal direction to the left side and is connected with the left end of the first horizontal connecting row 6 through a screw; the B-phase busbar includes the second vertical connecting row 8 and the second horizontal connecting row 7, the second vertical connecting row 8 is vertically L-shaped, the lower end is connected with the B-phase contact box, the upper end is bent back by 90 degrees to form a second bending part, the end of the second bending part is bent by 90 degrees along the horizontal direction to the right side and is connected with the left end of the second horizontal connecting row 7 through a screw; the C-phase busbar includes the third horizontal connecting row 11, the third vertical connecting row 10 and the fourth horizontal connecting row 9, the left end of the third horizontal connecting row 11 is connected with the C-phase contact box, the right end is bent by 90 degrees along the horizontal direction to form a third bending part, the third vertical connecting row 10 is connected with the third bending part and the left end of the fourth horizontal connecting row 9 through a screw. The first vertical connecting row 4 is fixed through the busbar clamp outside the back plate of the instrument room 1, the third horizontal connecting row 11 is fixed through the busbar clamp inside the back plate of the middle cabinet, which can effectively improve the busbar structure strength and enhance the thermal stability and dynamic stability of the busbar.

[0032] The side plate of the cabinet body of the busbar room 2 is provided with a plurality of openings, the right end of the first horizontal connecting row 6, the right end of the second horizontal connecting row 7 and the right end of the third horizontal connecting row 11 respectively pass through the corresponding side plate openings to form the outgoing row interfaces 3, including the A-phase outgoing row interface, the B-phase outgoing row interface and the C-phase outgoing row interface, as shown. Figure 2 As shown, the connecting row and the cabinet opening are insulated and isolated through the wire sleeve 5.

[0033] The cross-sectional size of the connecting row is 60mm*10mm, and the load carrying capacity is not less than 1250A.

[0034] The spacing between each contact box and each phase busbar is not less than 125mm.

[0035] At the same time, the front of the middle cabinet is also provided with the limiting structure of the instrument door 13, as shown. Figure 4 As shown.

[0036] The inner side of the instrument door 13 is provided with a horizontal first mounting strip 14, and the right end of the first mounting strip 14 is provided with three mounting holes which are distributed at intervals. The lower part of the cabinet opening is provided with a second mounting strip 17 with an inverted L-shaped cross section.

[0037] The instrument door limiting position structure comprises a limiting plate 16, a limiting sliding groove 18, a first connecting part 15 and a second connecting part 19. The limiting sliding groove 18 is arranged on the horizontal surface of the second mounting strip 17, and the limiting sliding groove 18 comprises a strip-shaped sliding groove and an opening with a gradually increased diameter at the end. The limiting plate 16 is provided with openings at both ends, and one end is movably connected with the first mounting strip 14 through the first connecting part 15 and the right side mounting hole of the first mounting strip 14, and the other end is movably connected with the limiting sliding groove 18 through the second connecting part 19.

[0038] The first connecting part 15 comprises a first nut 20 and a stepped bolt 21, and the structure is shown in Figure 5 . The stepped bolt 21 comprises a stud portion with a small diameter and a stepped portion with an increased diameter, the diameter of the stud portion is smaller than the diameter of the opening of the limiting plate 16, the diameter of the stepped portion is larger than the diameter of the opening of the limiting plate 16, the stud portion of the stepped bolt 21 passes through the opening of the limiting plate 16 and the right side mounting hole of the first mounting strip 14 in sequence and is connected with the first nut 20, the first nut 20 and the stepped bolt 21 movably connect the limiting plate 16 with the first mounting strip 14, and the limiting plate 16 can rotate along the axis of the stepped bolt 21 with the change of the opening angle of the instrument door 13.

[0039] The second connecting part 19 comprises a second nut 22, a stepped sleeve 23 and a bolt 24, and the structure is shown in Figure 5 . The structure of the stepped sleeve 23 is shown in Figure 6 , which comprises a first sleeve 25 with a large diameter at the upper part, a second sleeve 27 with a small diameter at the lower part and a trapezoidal transition part 26 at the middle part. The bolt 24 passes through the stepped sleeve 23 and the opening at the other end of the limiting plate 16 in sequence and is connected with the second nut 22.

[0040] The width of the strip-shaped sliding groove of the limiting sliding groove 18 is larger than the outer diameter of the second sleeve 27 and smaller than the outer diameter of the first sleeve 25; the diameter of the opening at the end is larger than the outer diameter of the first sleeve 25. That is to say, the second connecting part 19 has different diameters, the diameter of the middle part is the smallest, which is the outer diameter of the second sleeve 27, the diameters of the upper part and the lower part are larger, which are the outer diameter of the first sleeve 25 and the diameter of the nut respectively, and both of them are larger than the width of the strip-shaped sliding groove, therefore, the middle part of the second connecting part 19 is clamped in the strip-shaped sliding groove, and the upper part and the lower part of the second connecting part 19 are clamped at the upper end and the lower end of the strip-shaped sliding groove respectively. With the change of the opening angle of the instrument door 13, the second connecting part 19 slides in the strip-shaped sliding groove correspondingly. When the instrument door 13 is opened to the preset maximum angle, the second connecting part 19 will slide to the opening at the end of the limiting sliding groove 18, and since the diameter of the opening at the end is larger than the outer diameter of the first sleeve 25, the first sleeve 25 will fall into the opening at the end to limit the second connecting part 19, thereby fixing the limiting plate 16. Due to the reverse pulling force of the limiting plate 16, at this time, the instrument door 13 is limited and cannot increase the opening angle.

[0041] The right side of the first mounting strip 14 is designed with three mounting holes, and the limiting plate 16 is mounted in different hole positions, so that different maximum opening angle limits can be obtained.

[0042] In actual use, when the opening angle of the instrument door 13 gradually increases, the second connecting part 19 moves in the limiting sliding groove 18 to the end opening direction, and falls into the end opening when reaching the preset opening angle, so that the second connecting part 19 is limited by the end opening, and the position of the limiting rod 16 and the opening angle of the instrument door 13 are limited correspondingly; if the instrument door 13 needs to be closed, the second connecting part 19 is lifted upwards, so that the first sleeve 25 is separated from the end opening, and the instrument door can be pushed.

[0043] Through the above design, the cabinet body width of the middle cabinet can be reduced to 550 mm, and the electrical safety distance between each phase can meet the standard requirement of 125 mm. The narrower cabinet width is beneficial to use in the power distribution room with limited space, and more middle cabinets can be arranged in the same space, thereby improving the overall capacity of the power distribution system. At the same time, the adjacent arranged middle cabinets do not need to increase the insulation material, which can effectively reduce the system cost. The instrument door has adjustable maximum angle limit when being opened, which avoids collision between the instrument door and the adjacent cabinet body and damage caused thereby.

[0044] The above is only an embodiment of the present application, and the specific structure and characteristics of the scheme and the like are not described in detail, the ordinary technical personnel in the art know all the ordinary technical knowledge in the technical field of the present application before the application date or the priority date, can know all the prior art in the field, and has the ability to apply the conventional experimental means before the date, the ordinary technical personnel in the art can improve and implement the scheme under the inspiration of the present application, some typical known structures or known methods should not be an obstacle for the ordinary technical personnel to implement the present application. It should be pointed out that for the technical personnel in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be regarded as the protection scope of the present application, which will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A compact metal-clad switchgear comprising a cabinet and a meter door provided on the front face of the cabinet, characterized in that: The cabinet body is internally provided with a busbar chamber, the busbar chamber is internally provided with vertical busbars, the instrument door and the cabinet body are provided with a limiting mechanism for limiting the opening angle of the instrument door; The limiting mechanism comprises a limiting plate, a limiting sliding groove, a first connecting part and a second connecting part, the inner side of the lower part of the instrument door is provided with a horizontal first mounting strip, the right end of the first mounting strip is provided with a mounting hole, the lower part of the cabinet body is provided with a second mounting strip with an inverted L-shaped cross section, the limiting sliding groove is arranged on the horizontal surface of the second mounting strip, both ends of the limiting plate are provided with openings, one end of the limiting plate is movably connected with the first mounting strip through the first connecting part and the mounting hole, the other end of the limiting plate is movably connected with the limiting sliding groove through the second connecting part, when the instrument door does not reach the maximum opening angle, the second connecting part can move in the limiting sliding groove, when the instrument door reaches the maximum opening angle, the second connecting part is fixed in the limiting sliding groove.

2. A compact unit substation as set forth in claim 1, characterized in that: The busbars comprise A-phase busbars, B-phase busbars and C-phase busbars, the side surface of the busbar chamber is provided with A-phase outgoing busbar interfaces, B-phase outgoing busbar interfaces and C-phase outgoing busbar interfaces, the side surface of the cabinet body is provided with openings for the busbars to pass through, the cabinet body is internally provided with a circuit breaker chamber, the back plate of the circuit breaker chamber is provided with A-phase contactor boxes, B-phase contactor boxes and C-phase contactor boxes, the A-phase busbars are respectively connected with the A-phase contactor boxes and the A-phase outgoing busbar interfaces, the B-phase busbars are respectively connected with the B-phase contactor boxes and the B-phase outgoing busbar interfaces, and the C-phase busbars are respectively connected with the C-phase contactor boxes and the C-phase outgoing busbar interfaces.

3. A compact unit substation according to claim 2, characterized in that: The A-phase busbars comprise first vertical connecting busbars and first horizontal connecting busbars, the B-phase busbars comprise second vertical connecting busbars and second horizontal connecting busbars, and the C-phase busbars comprise third horizontal connecting busbars, third vertical connecting busbars and fourth horizontal connecting busbars.

4. A compact unit substation as set forth in claim 3, characterized in that: The cross-sectional dimension of the busbars is 60mm*10mm.

5. A compact unitary indoor cabinet according to claim 4, characterized in that: The carrying capacity of the busbars is not less than 1250A.

6. A compact unitary cabinet according to claim 5, characterized in that: The distance between the A-phase busbars, the B-phase busbars and the C-phase busbars is not less than 125mm.

7. A compact unitary cabinet according to claim 6, characterized in that: Further, the busbars and the cabinet body are insulated and separated by a threading sleeve.

8. A compact unit substation as defined in claim 1, wherein: The first connecting part comprises a first nut and a stepped bolt, the stepped bolt comprises a stepped portion and a stud, the stud passes through the opening at one end of the limiting plate, the mounting hole of the first mounting strip and is connected with the first nut, and the diameter of the stepped portion is greater than that of the opening of the limiting plate; the second connecting part comprises a second nut, a stepped sleeve and a bolt, the stepped sleeve comprises first and second sleeves with different diameters and a trapezoidal transition portion, the bolt passes through the stepped sleeve, the opening at the other end of the limiting plate and is connected with the second nut in sequence; the limiting sliding groove comprises a strip-shaped sliding groove and a terminal opening, the width of the strip-shaped sliding groove is greater than the outer diameter of the second sleeve and less than the outer diameter of the first sleeve, and the diameter of the terminal opening is greater than the outer diameter of the first sleeve.

9. A compact unitary cabinet according to claim 8, characterized in that: The right end mounting hole of the first mounting strip is 3, which are arranged at intervals along the horizontal direction of the first mounting strip.

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