A structure stable low-voltage fixed switch cabinet

Abstract

This utility model relates to the field of low-voltage fixed switchgear technology and discloses a structurally stable low-voltage fixed switchgear, including a cabinet and a main busbar and a busbar disposed inside the cabinet. The front end of the cabinet is divided into a circuit breaker compartment and a component compartment from top to bottom. The right side of the circuit breaker compartment is set as a metering compartment, and the rear end of the cabinet is set as a busbar compartment. The main busbar and the busbar are horizontally arranged inside the busbar compartment. By adding five support points to the main busbar and four support points to the busbar, and by connecting the higher strength SMC material busbar support to the mounting bracket with bolts, the dynamic stability when short withstand current passes through is improved. Inside the metering compartment, a higher strength epoxy support beam is used to support the busbar, thereby reducing the risk of insert detachment. By adopting a profile splicing cabinet, the splicing strength and rigidity of the entire frame are improved by using C-shaped profiles, upper and lower crossbeams, pressure plates, and bracing.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage fixed switchgear technology, specifically a structurally stable low-voltage fixed switchgear. Background Technology

[0002] The GGD low-voltage fixed switchgear is a type of GGD AC low-voltage distribution cabinet, mainly used in fixed wiring low-voltage power distribution systems. It is suitable for AC 50Hz power distribution systems with a rated operating voltage of 380V and a rated current up to 3150A, and is used for power conversion, distribution and control of power, lighting and power distribution equipment.

[0003] Existing GGD low-voltage fixed switchgear exhibits problems such as structural deformation, busbar support component breakage, and detachment of the upper and lower end support insulator inserts of the main busbar in the metering compartment during short-time withstand strength tests, as well as busbar displacement.

[0004] Specifically, the short-time withstand current (KA) of the main busbar and incoming / outgoing copper busbars of the low-voltage switchgear did not reach 650 kJ / m² during random sampling inspections of the short-time withstand strength test. 5％ / S and peak withstand current (KA) did not reach 1430 5％ / 100ms.

[0005] During the test, the busbar insulation and support components were found to be in two or more pieces, and cracks appeared on the surface of the support components.

[0006] Therefore, a structurally stable low-voltage fixed switchgear is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a structurally stable low-voltage fixed switchgear to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a structurally stable low-voltage fixed switch cabinet, comprising a cabinet body assembled from C-shaped profiles, upper and lower crossbeams, pressure plates, and support corners;

[0009] And the main busbars and busbars located inside the cabinet;

[0010] The front end of the cabinet is divided into a circuit breaker compartment and a component compartment from top to bottom. The right side of the circuit breaker compartment is set as a metering compartment, and the rear end of the cabinet is set as a busbar compartment.

[0011] The busbar compartment, circuit breaker compartment, metering compartment, and component compartment are all separated and isolated by partitions;

[0012] The main busbar and the busbar are arranged horizontally inside the busbar room;

[0013] The right ends of the main busbar and the manifold extend through the corresponding partitions into the metering chamber.

[0014] Preferably, a generator car connector box is fixedly installed on the left side of the cabinet, and an upper side plate and a lower side plate are fixedly installed on the left side of the cabinet corresponding to the upper and lower ends of the generator car connector box, respectively.

[0015] Preferably, the cabinet has a right door for the component compartment on its front side, corresponding to the component compartment location.

[0016] Preferably, a metering door is provided on the front of the cabinet corresponding to the metering chamber, and an observation window is provided on the metering door.

[0017] Preferably, busbar clamps are sequentially provided on the main busbar and the busbar from left to right. The back of both sets of busbar clamps are mounted on the mounting bracket by bolts. The mounting bracket is fixedly connected to the inner wall of the busbar room by self-tapping screws. The busbar clamps are made of SMC material.

[0018] Preferably, the inner wall of the metering chamber is symmetrically and fixedly provided with mounting beams, and epoxy resin support beams are fixedly connected to the rear right side of the main busbar and the manifold. The left and right ends of the two epoxy resin support beams are fixedly connected to the front of the two mounting beams.

[0019] Preferably, a connecting beam is horizontally provided between the two epoxy resin support beams, and the two ends of the connecting beam are fixedly connected to the front of the two mounting beams respectively.

[0020] Compared with the prior art, the beneficial effects of this utility model are: this structurally stable low-voltage fixed switchgear...

[0021] 1) By adding five support points to the main busbar and four support points to the busbar, and by connecting the higher strength SMC material busbar support to the mounting bracket with bolts, the dynamic stability when short withstand current passes through is improved; a higher strength epoxy support beam is used inside the metering chamber to support the busbar, thereby reducing the risk of insert falling off.

[0022] 2) By adopting a modular cabinet design, the splicing strength and rigidity of the entire frame are improved by using C-shaped profiles, upper and lower beams, pressure plates, and bracing. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the front structure of the cabinet of this utility model;

[0024] Figure 2 This is a schematic cross-sectional view of the front structure of the busbar compartment of this utility model;

[0025] Figure 3 This is a top-view perspective view of the busbar clamp structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the metrology chamber structure of this utility model;

[0027] Figure 5 This is a schematic diagram of the metrology chamber structure of this utility model.

[0028] In the diagram: 1 Cabinet, 2 Circuit Breaker Room, 3 Component Room, 4 Metering Room, 41 Mounting Beam, 42 Epoxy Resin Support Beam, 43 Connecting Beam, 5 Right Door of Component Room, 6 Upper Side Panel, 7 Generator Cart Plug-in Box, 8 Lower Side Panel, 9 Busbar Room, 91 Main Busbar, 92 Busbar, 93 Busbar Clamp, 94 Mounting Bracket, 10 Observation Window, 11 Metering Door. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1:

[0031] Please see Figures 1-5 This utility model provides a technical solution: a structurally stable low-voltage fixed switch cabinet, including a cabinet body 1 spliced ​​from C-shaped profiles, upper and lower crossbeams, pressure plates and support corners;

[0032] And the main busbar 91 and the busbar 92 are installed inside the cabinet 1;

[0033] The front interior of cabinet 1 is divided into circuit breaker compartment 2 and component compartment 3 from top to bottom. The right side of circuit breaker compartment 2 is set as metering compartment 4, and the rear interior of cabinet 1 is set as busbar compartment 9.

[0034] Busbar compartment 9, circuit breaker compartment 2, metering compartment 4, and component compartment 3 are all separated by partitions;

[0035] The main busbar 91 and the busbar 92 are arranged horizontally inside the busbar compartment 9;

[0036] The right ends of the main busbar 91 and the busbar 92 extend through the corresponding partitions into the metering chamber 4.

[0037] Busbar clamps 93 are sequentially installed on the main busbar 91 and the busbar 92 from left to right. The back of the two sets of busbar clamps 93 are bolted to the mounting bracket 94. The mounting bracket 94 is fixedly connected to the inner wall of the busbar chamber 9 by self-tapping screws. The busbar clamps 93 are made of SMC material.

[0038] A generator car plug-in box 7 is fixedly installed on the left side of the cabinet 1. An upper side plate 6 and a lower side plate 8 are fixedly installed on the upper and lower ends of the left side of the cabinet 1 corresponding to the generator car plug-in box 7, respectively.

[0039] The front of cabinet 1 is provided with a right door 5 for the component room 3, and a metering door 11 is provided on the front of cabinet 1, which is located in the metering room 4. An observation window 10 is provided on the metering door 11.

[0040] Furthermore, in this embodiment, five support points are added to the main busbar 91 and four support points are added to the busbar 92, and the higher strength SMC material busbar support is connected to the mounting bracket 94 by bolts, thereby improving the dynamic stability when short withstand current passes through.

[0041] Example 2

[0042] Please see Figures 1-5 Furthermore, based on Example 1, the following is obtained: symmetrically fixed installation beams 41 are provided on the inner wall of the metering chamber 4; epoxy resin support beams 42 are fixedly connected to the rear right side of the main busbar 91 and the busbar 92; and the left and right ends of the two epoxy resin support beams 42 are fixedly connected to the front of the two installation beams 41.

[0043] A connecting beam 43 is horizontally arranged between the two epoxy resin support beams 42, and the two ends of the connecting beam 43 are fixedly connected to the front of the two mounting beams 41 respectively.

[0044] Furthermore, in this embodiment, a higher-strength epoxy support beam is used inside the metering chamber 4 to support the busbar, thereby reducing the risk of insert detachment.

[0045] In use, five support points are added to the main busbar 91 and four support points are added to the busbar 92. The higher strength SMC material busbar support is connected to the mounting bracket 94 by bolts, thereby improving the dynamic stability when short current passes through. Inside the metering chamber 4, a higher strength epoxy support beam is used to support the busbar, thereby reducing the risk of insert falling off. By adopting a profile splicing cabinet 1, the splicing strength and rigidity of the entire frame are improved by using C-shaped profiles, upper and lower crossbeams, pressure plates and bracing.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A structurally stable low-voltage fixed switchgear, comprising a cabinet body (1) assembled from C-shaped profiles, upper and lower crossbeams, pressure plates and bracing. And the main busbar (91) and busbar (92) installed inside the cabinet (1); characterized in that The front end of the cabinet (1) is divided into a circuit breaker compartment (2) and a component compartment (3) from top to bottom. The right side of the circuit breaker compartment (2) is set as a metering compartment (4). The rear end of the cabinet (1) is set as a busbar compartment (9). The busbar compartment (9), circuit breaker compartment (2), metering compartment (4) and component compartment (3) are all separated by partitions; The main busbar (91) and the busbar (92) are arranged horizontally inside the busbar compartment (9); The right ends of the main busbar (91) and the busbar (92) extend through the corresponding partitions into the metering chamber (4).

2. A structure-stable low-voltage fixed switchgear according to claim 1, characterized in that: A generator car plug-in box (7) is fixedly installed on the left side of the cabinet (1), and an upper side plate (6) and a lower side plate (8) are fixedly installed on the upper and lower ends of the left side of the cabinet (1) corresponding to the generator car plug-in box (7).

3. A structure-stable low-voltage fixed switchgear according to claim 1, characterized in that: The cabinet (1) has a right door (5) for the component room (3) on the front.

4. The structure-stable low-voltage fixed switchgear according to claim 1, characterized in that: The cabinet (1) is provided with a metering door (11) on the front corresponding to the metering room (4), and an observation window (10) is provided on the metering door (11).

5. A structurally stable low-voltage fixed switchgear according to claim 1, characterized in that: Busbar clamps (93) are arranged sequentially from left to right on the main busbar (91) and the busbar (92). The back of both sets of busbar clamps (93) are mounted on the mounting bracket (94) by bolts. The mounting bracket (94) is fixedly connected to the inner wall of the busbar chamber (9) by self-tapping screws. The busbar clamps (93) are made of SMC material.

6. A structurally stable low-voltage fixed switchgear according to claim 1, characterized in that: The inner wall of the metering chamber (4) is symmetrically fixed with mounting beams (41). The rear right side of the main busbar (91) and the busbar (92) are both fixedly connected with epoxy resin support beams (42). The left and right ends of the two epoxy resin support beams (42) are fixedly connected to the front of the two mounting beams (41).

7. A structurally stable low-voltage fixed switchgear according to claim 6, characterized in that: A connecting beam (43) is horizontally arranged between the two epoxy resin support beams (42), and the two ends of the connecting beam (43) are fixedly connected to the front of the two mounting beams (41) respectively.

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