A low voltage switchgear

Abstract

The utility model discloses a low -voltage switch cabinet, low -voltage switch cabinet includes cabinet subassembly, and cabinet subassembly includes the multiple switch cabinet body of side by side arrangement, and the detachable connection between two adjacent switch cabinet body, and multiple switch cabinet body includes the circuit breaker switch room, copper row splicing room and cable wiring room of setting gradually from front to back, the mutual isolation setting between circuit breaker switch room copper row splicing room and cable wiring room, circuit breaker switch room includes the multiple compartment for accommodating circuit breaker, and the mutual isolation arrangement setting between multiple compartment, to make the compartment of different function mutual isolation, to improve fireproof and anti -electric leakage performance, and the mutual isolation between each circuit breaker, to guarantee circuit breaker break -arc when not influence other road's circuit breaker, guarantee use safety and stability. The utility model is applicable to switch cabinet technical field.

Description

Technical Field

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

[0002] Low-voltage switchgear is a device used for controlling, protecting, and distributing low-voltage power systems. It consists of a cabinet, switchgear, busbars, cables, relays, and instruments, and is characterized by its compact structure, comprehensive functions, and ease of operation. Low-voltage switchgear generally adopts a welded or modular steel plate structure, providing good mechanical strength and protection levels. The interior of the cabinet is divided into different compartments according to function, such as busbar compartments, switch compartments, cable compartments, and secondary equipment compartments, to ensure the safety of personnel and equipment.

[0003] In order to achieve as many circuit breakers as possible in a small space, existing low-voltage switchgear does not provide good isolation between different compartments, which can easily cause danger when the circuit breaker trips and arcs. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention provides a low-voltage switchgear that solves the problem that existing low-voltage switchgear cannot provide adequate isolation and is prone to causing danger.

[0005] A low-voltage switchgear according to a first aspect of the present invention includes: a cabinet assembly comprising a plurality of switchgear cabinets arranged side by side, wherein two adjacent switchgear cabinets are detachably connected, the plurality of switchgear cabinets comprising a circuit breaker switch compartment, a copper busbar splicing compartment and a cable wiring compartment arranged sequentially from front to back, wherein the circuit breaker switch compartment, the copper busbar splicing compartment and the cable wiring compartment are isolated from each other, and the circuit breaker switch compartment comprises a plurality of compartments for accommodating circuit breakers, wherein the plurality of compartments are arranged in an isolated manner.

[0006] The low-voltage switchgear according to the embodiments of this utility model has at least the following beneficial effects:

[0007] The circuit breaker switch compartment provided by this utility model includes multiple compartments for accommodating circuit breakers. The multiple compartments are arranged in a mutually isolated manner so that compartments with different functions are isolated from each other, thereby improving fire prevention and leakage prevention performance, effectively improving the safety performance of low-voltage switchgear, and ensuring that each circuit breaker is isolated from each other so as to ensure that when a circuit breaker breaks an arc, it does not affect the circuit breakers of other circuits, thus ensuring safety and stability in use.

[0008] According to some embodiments of the present invention, an insulating layer is provided between the circuit breaker and the compartment.

[0009] According to some embodiments of this utility model, an operating handle connected to the circuit breaker is provided on the outside of the compartment to control the status of the circuit breaker from outside the cabinet.

[0010] According to some embodiments of the present invention, at least one of the switch cabinets is provided with a main switch, which is connected to each of the circuit breaker switch compartments.

[0011] According to some embodiments of the present invention, the low-voltage switchgear further includes a heat dissipation component, which includes air ducts disposed in a plurality of switchgear bodies.

[0012] According to some embodiments of the present invention, the heat dissipation component is further provided with a fan mechanism, which is connected to a plurality of the air ducts respectively.

[0013] According to some embodiments of the present invention, the air duct includes an air inlet and an air outlet that connect to the outside. The air inlet is located at the bottom of the circuit breaker compartment, and the air outlet is located at the top of the cable wiring compartment. The air duct passes through the copper busbar splicing compartment.

[0014] According to some embodiments of this utility model, both the air inlet and the air outlet are provided with dust covers, and the dust covers are hollow mesh structures.

[0015] According to some embodiments of the present invention, splicing mechanisms are provided on both sides of the switch cabinet. The splicing mechanism includes a plurality of connecting holes arranged along the side of the switch cabinet, and the corresponding connecting holes are connected by bolts.

[0016] According to some embodiments of the present invention, the top of the cabinet assembly is provided with a plurality of evenly distributed lifting points, and the plurality of lifting points are provided with a plurality of lifting rings protruding from the top surface of the switch cabinet.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 A schematic diagram of an embodiment of the low-voltage switchgear provided by this utility model;

[0020] Figure 2 A top view of the internal structure of an embodiment of the low-voltage switchgear provided by this utility model;

[0021] Figure 3A partial structural diagram of the interior of a compartment in an embodiment of the low-voltage switchgear provided by this utility model;

[0022] Figure 4 A schematic diagram of the airflow direction of an embodiment of the low-voltage switchgear provided by this utility model;

[0023] Icon labels:

[0024] Cabinet assembly 100; switch cabinet 110; circuit breaker switch compartment 111; compartment 1111; insulating partition 1112; operating handle 1113; copper busbar splicing compartment 112; cable wiring compartment 113; main switch 114; heat dissipation assembly 120; air duct 121; fan 122; air inlet 123; air outlet 124; dust cover 125; splicing mechanism 130; connection hole 131; suspension point 140. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of this utility model, not all embodiments.

[0030] Low-voltage switchgear is a device used for controlling, protecting, and distributing low-voltage power systems. It consists of a cabinet, switchgear, busbars, cables, relays, and instruments, and is characterized by its compact structure, comprehensive functions, and ease of operation. Low-voltage switchgear generally adopts a welded or modular steel plate structure, providing good mechanical strength and protection levels. The interior of the cabinet is divided into different compartments according to function, such as busbar compartments, switch compartments, cable compartments, and secondary equipment compartments, to ensure the safety of personnel and equipment.

[0031] In order to achieve as many circuit breakers as possible in a small space, existing low-voltage switchgear does not provide good isolation between compartments with different functions. When the circuit breaker trips and arcs, it can easily cause danger.

[0032] To address the aforementioned problems, this utility model proposes a low-voltage switchgear that effectively solves the issues of low-voltage switchgear failing to provide adequate isolation and potentially causing hazards.

[0033] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The low-voltage switchgear of this utility model is described in the following embodiments:

[0034] like Figure 1 As shown, the low-voltage switchgear of this utility model embodiment includes a cabinet assembly 100. The cabinet assembly 100 adopts a metal enclosed frame and is made of steel plate to protect the complex internal electrical structure and provide arc protection.

[0035] Reference Figure 1 and Figure 2 As shown, the cabinet assembly 100 includes multiple switch cabinets 110 arranged side by side in the horizontal direction. Adjacent switch cabinets 110 are detachably connected. The multiple switch cabinets 110 include a circuit breaker switch compartment 111, a copper busbar splicing compartment 112, and a cable wiring compartment 113 arranged sequentially from front to back. The circuit breaker switch compartment 111, the copper busbar splicing compartment 112, and the cable wiring compartment 113 are isolated from each other. The compartments with different functions are isolated by steel plates, so that when one compartment fails, it can be effectively cut off to prevent the fault from spreading.

[0036] The circuit breaker switch compartment 111 includes multiple compartments 1111 for accommodating circuit breakers. The multiple compartments 1111 are arranged in an isolated manner, so that each circuit breaker is in a separate compartment 1111. When the circuit breaker breaks and an arc is generated, the arc remains inside the compartment 1111 and does not affect the switching of other circuit breakers. Other branches can still maintain their working state, thereby effectively improving the fire prevention and leakage prevention performance and ensuring the safety and stability of the low-voltage switchgear.

[0037] Multiple compartments 1111 are arranged vertically, and multiple switch cabinets 110 are arranged horizontally, so that the multiple circuit breaker switch chambers 111 in the multiple switch cabinets 110 are arranged in a matrix, thereby connecting to form as many branch circuits as possible in a limited space to meet complex and diverse control functions.

[0038] Furthermore, multiple circuit breakers are fixedly installed in multiple compartments 1111, as shown in the reference. Figure 3 As shown, an insulating layer 1112 is provided between the circuit breaker and the inner wall of compartment 1111. The insulating layer 1112 fills the gap between the circuit breaker and the inner wall of compartment 1111, which serves to fix the circuit breaker and provide insulation protection. The insulating layer 1112 is made of insulating material. In this embodiment, the insulating layer 1112 is made of plastic to prevent conductivity and further isolate the circuit, ensuring the safe use of each branch and preventing cross-influence.

[0039] An operating handle 1113 connected to the circuit breaker is provided on the outside of compartment 1111. The circuit breaker can be controlled from outside the cabinet by operating handle 1113, thereby changing the circuit branch connection status without opening the cabinet door of switch cabinet 110, which is convenient for operation. Moreover, the circuit breaker will generate an electric arc when it is switched on or off. Keeping it outside the cabinet can isolate the electric arc and effectively prevent the electric arc energy from spreading to the surrounding area and causing injury to people nearby. By isolating the circuit breaker from the outside world, the safety of users is guaranteed when operating the circuit breaker in front of the compartment, which can effectively avoid the occurrence of safety accidents.

[0040] The copper busbar splicing compartment 112 includes multiple copper busbars arranged horizontally and vertically. The copper busbars arranged horizontally are used to connect the various branch circuits in the multiple switch cabinets 110 horizontally, and the copper busbars arranged vertically are used to transmit electrical energy between the layers of the multiple circuit breaker switch compartments 111, so that the multiple copper busbars can evenly distribute electrical energy to each branch circuit.

[0041] Reference Figure 2 As shown, in the adjacent switch cabinets 110 connected side by side, the ends of the copper busbars arranged in the horizontal direction in the copper busbar splicing chamber 112 correspond one-to-one, which can realize the corresponding overlap of the ends of the copper busbars in different switch cabinets 110, realize the interconnection of the copper busbars between different switch cabinets 110, and thus form a power transmission path across different switch cabinets 110.

[0042] The cable junction box 113 is used to house the cable. Multiple copper busbars extend to the cable junction box 113 through terminals or connectors to achieve electrical connection with the cable, thereby ensuring that electrical energy is transmitted from the multiple copper busbars to the cable. The cable is used to connect to external electrical equipment, thereby transmitting electrical energy to each electrical device.

[0043] This utility model isolates the circuit breaker, copper busbar and connecting cable from each other by setting up compartments with different functions. The compartments with different functions are separated by steel plates, so that when one compartment fails, it can be effectively cut off and the fault can be prevented from spreading.

[0044] In the low-voltage switchgear of this utility model embodiment, at least one switchgear body 110 is provided with a main switch 114 for connecting to the external line. The main switch 114 is connected to each circuit breaker. The input of the overall power supply is controlled by the main switch 114 to facilitate the control of the power supply on and off of all branches.

[0045] Reference Figure 4 As shown, the low-voltage switchgear also includes a heat dissipation assembly 120. The heat dissipation assembly 120 includes multiple air ducts 121 disposed in multiple switchgear bodies 110. The multiple air ducts 121 include air inlets 123 and air outlets 124 that connect to the outside. The air inlets 123 are located at the bottom of the circuit breaker compartment, and the air outlets 124 are located at the top of the cable connection compartment 113. The airflow in the multiple air ducts 121 flows fully through multiple copper busbar splicing compartments 112. Since the copper busbar splicing compartment 112 is the main heat-generating compartment, the copper busbars in the copper busbar splicing compartment 112 will generate a large amount of heat when transmitting electrical energy, thereby affecting the conductivity. The airflow in the multiple air ducts 121 flows through all the copper busbars in the copper busbar splicing compartment 112, which can fully exchange heat with the heated copper busbars, effectively improve the heat dissipation efficiency, and significantly improve the current carrying capacity of the copper busbars.

[0046] Furthermore, the heat dissipation component 120 is also equipped with a fan 122, which is connected to multiple air ducts 121. The fan 122 drives the airflow in the air ducts 121, which further improves the heat exchange efficiency and facilitates the transfer of the heat generated by the copper busbar to the outside of the low-voltage switch cabinet with the airflow, thereby increasing the current carrying capacity of the copper busbar.

[0047] Both the air inlet 123 and the air outlet 124 are equipped with dust covers 125. The dust covers 125 have a hollow mesh structure, which can prevent foreign objects from being drawn into the air duct 121 by the air flow while allowing airflow to be introduced, thus avoiding the accident caused by electric arc igniting foreign objects and further ensuring the safe use of the low-voltage switchgear.

[0048] The switch cabinet 110 is provided with splicing mechanisms 130 on both sides. The splicing mechanism 130 includes a plurality of connecting holes 131 arranged along the side of the switch cabinet 110. The corresponding connecting holes 131 are connected by bolts, so that adjacent switch cabinets 110 can be detachably spliced, thereby changing the number of switch cabinets 110. In this embodiment of the utility model, the number of switch cabinets 110 is three. After the cabinet is spliced, the internal copper busbars and cables are respectively connected to each other, thereby realizing the electrical connection between multiple switch cabinets 110.

[0049] In some other embodiments, the number of switch cabinets 110 can be adjusted according to actual usage requirements, thus adapting to different operating conditions. The separation or connection of switch cabinets 110 can be completed simply by removing or installing bolts, making cabinet assembly and disassembly operations simple and easy to complete.

[0050] In other embodiments, the splicing mechanism 130 may take other forms, such as matching and engaging clips and slots, as long as it can enable the splicing of the switch cabinet so that the two ends of the copper busbar extending laterally can be correspondingly overlapped and fixed.

[0051] The top of the cabinet assembly 100 is provided with a plurality of evenly distributed hanging points 140, and the plurality of hanging points 140 are provided with a plurality of hanging rings. The hanging rings are set to protrude from the top surface of the cabinet assembly 100 and are integrally formed with the cabinet assembly 100, so that the hanging rings are securely connected to the cabinet assembly 100. The multiple hanging rings allow the cabinet assembly 100 to be moved by passing a hook through the hanging rings, so as to facilitate the movement of the cabinet assembly 100.

[0052] In some other embodiments, the cabinet assembly 100 can be moved in other ways, such as by providing grippers on both sides of the cabinet assembly 100, as long as the need for convenient movement of the cabinet assembly 100 is met.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A low-voltage switchgear, characterized in that, include: The cabinet assembly includes multiple switch cabinets arranged side by side, with adjacent switch cabinets being detachably connected. Each switch cabinet includes a circuit breaker switch compartment, a copper busbar splicing compartment, and a cable wiring compartment arranged sequentially from front to back. The circuit breaker switch compartment, the copper busbar splicing compartment, and the cable wiring compartment are isolated from each other. The circuit breaker switch compartment includes multiple compartments for accommodating circuit breakers, and the multiple compartments are arranged in an isolated manner.

2. The low-voltage switchgear according to claim 1, characterized in that: An insulating layer is provided between the circuit breaker and the compartment.

3. The low-voltage switchgear according to claim 2, characterized in that: The outside of the compartment is equipped with an operating handle that is connected to the circuit breaker, so as to control the circuit breaker from outside the cabinet.

4. The low-voltage switchgear according to claim 1, characterized in that: At least one of the switch cabinets is provided with a main switch for connection to an external line, the main switch being connected to each of the circuit breakers.

5. The low-voltage switchgear according to claim 1, characterized in that: The low-voltage switchgear also includes a heat dissipation component, which includes multiple air ducts disposed in multiple switchgear bodies.

6. The low-voltage switchgear according to claim 5, characterized in that: The heat dissipation component is also equipped with a fan, which is connected to multiple air ducts.

7. The low-voltage switchgear according to claim 5, characterized in that: The plurality of air ducts include air inlets and air outlets that connect to the outside. The air inlets are located at the bottom of the circuit breaker switch compartment, and the air outlets are located at the top of the cable connection compartment.

8. The low-voltage switchgear according to claim 7, characterized in that: Both the air inlet and the air outlet are equipped with dust covers, which are perforated mesh structures.

9. The low-voltage switchgear according to claim 1, characterized in that: The switch cabinet is provided with splicing mechanisms on both sides. The splicing mechanism includes a plurality of connecting holes arranged along the side of the switch cabinet, and the corresponding connecting holes are connected by bolts.

10. The low-voltage switchgear according to claim 1, characterized in that: The top of the cabinet assembly is provided with a plurality of evenly distributed lifting points, and the plurality of lifting points are provided with a plurality of lifting rings protruding from the top surface of the switch cabinet.

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