A multi-unit flexible combination small-sized medium-voltage ring network cabinet

Abstract

The utility model discloses a kind of miniaturization medium voltage looped net cabinet of multiple unit flexible combination, including medium voltage looped net cabinet body, several electromagnetic isolation plates are along medium voltage looped net cabinet body inside interval arrangement, the inside of medium voltage looped net cabinet body is divided to form multiple independent electromagnetic isolation cavities, one independent electrical unit storehouse is detachably arranged in each electromagnetic isolation cavity by positioning and fixed assembly, for separating and assembling electrical unit of different function, integrated heat dissipation assembly is provided on medium voltage looped net cabinet body and is communicated with multiple independent electrical unit storehouse, for the synchronous heat dissipation of multiple independent electrical unit storehouse, the utility model independent electrical unit storehouse is detachably installed by positioning and fixed assembly, can increase and decrease unit quantity according to power supply demand, replace different function unit, adapt to multiple power distribution scene, without overall replacement cabinet body, electromagnetic isolation plate divides cabinet body into independent chamber, cooperate with the unit storehouse of insulating material, effectively block the electromagnetic interference between adjacent electrical unit, improve operating stability.

Description

Technical Field

[0001] This utility model belongs to the technical field of medium-voltage ring main units, specifically relating to a miniaturized medium-voltage ring main unit with flexible multi-unit combination. Background Technology

[0002] Medium-voltage ring main units are electrical transmission and distribution equipment, installed in metal or non-metal insulated cabinets or assembled into modular ring main units. Their core components use load switches and fuses. They have advantages such as simple structure, small size, low price, improved power supply parameters and performance, and enhanced power supply safety. They are widely used in substations and prefabricated substations in load centers such as urban residential areas, high-rise buildings, large public buildings, and factories.

[0003] Existing medium-voltage ring main unit electrical units are mostly installed in a single cavity, with fixed installation positions. This prevents flexible assembly based on electrical functions and affects the use of the electrical unit assembly layout in medium-voltage ring main units. To address this, we propose a miniaturized medium-voltage ring main unit with flexible multi-unit combinations. Utility Model Content

[0004] The purpose of this utility model is to provide a miniaturized medium-voltage ring main unit with flexible combination of multiple units to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a miniaturized medium-voltage ring main unit with flexible multi-unit combination, comprising: Medium-voltage ring main unit, wherein a medium-voltage ring main unit door is hinged to the medium-voltage ring main unit; Electromagnetic isolation plates are provided in several units, and these electromagnetic isolation plates are spaced apart along the inside of the medium-voltage ring network cabinet, dividing the inside of the medium-voltage ring network cabinet into multiple independent electromagnetic isolation cavities. Each electromagnetic isolation cavity contains a detachable independent electrical unit compartment, which is used to separate and assemble electrical units with different functions. An integrated heat dissipation component is provided on the medium-voltage ring network cabinet, which connects multiple independent electrical unit compartments and is used to simultaneously dissipate heat from the multiple independent electrical unit compartments.

[0006] Preferably, the positioning and fixing assembly includes a positioning frame, a positioning protrusion, a fixing frame, and a locking bolt; The positioning frame is disposed on the inner rear side of the electromagnetic isolation cavity. The positioning protrusions are provided at the four corners of the positioning frame. The positioning grooves are provided at the four rear corners of the independent electrical unit compartment. The independent electrical unit compartment is positioned and connected to the positioning protrusions on the positioning frame through the positioning grooves. The fixed frame is abutted against the front side of the independent electrical unit compartment and is locked to the medium-voltage ring network cabinet by the locking bolts.

[0007] Preferably, the positioning protrusion is a stepped protrusion with one large and one small section, integrally molded from rubber, and a cavity is formed between the independent electrical unit compartment and the medium-voltage ring network cabinet through the positioning protrusion.

[0008] Preferably, the inner side of the fixing frame is flush with the inner side of the independent electrical unit compartment, and the outer end of the fixing frame is flush with the opening end of the medium-voltage ring network cabinet.

[0009] Preferably, the integrated heat dissipation assembly includes an integrated heat dissipation cavity shell and a heat dissipation fan; The cooling fan is located at the upper end of the medium-voltage ring network cabinet. One end of the integrated cooling cavity shell is connected to the cooling fan, and the other end of the integrated cooling cavity shell passes through the electromagnetic isolation plate along the cavity and is connected to the multiple independent electrical unit compartments. Each of the medium-voltage ring main unit doors has louvered windows at the location corresponding to each of the independent electrical unit compartments.

[0010] Preferably, the integrated heat dissipation cavity shell is provided with a communication port at the position corresponding to the independent electrical unit compartment, and the rear side of the independent electrical unit compartment is provided with a plug-in slot at the position corresponding to the communication port. The integrated heat dissipation cavity shell is inserted into the plug-in slot through the communication port and communicates with the interior of the independent electrical unit compartment.

[0011] Preferably, cable holes are provided on the rear side of both the medium-voltage ring main unit and the independent electrical unit compartment, and cable clamps are inserted into the cable holes.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. High flexibility in combination: The independent electrical unit compartment can be detached and installed through positioning and fixing components. The number of units can be increased or decreased and different functional units can be replaced according to power supply needs, adapting to a variety of power distribution scenarios without the need to replace the entire cabinet. 2. Low electromagnetic interference: The electromagnetic isolation plate divides the cabinet into independent chambers, and together with the unit compartments made of insulating material, it effectively blocks electromagnetic interference between adjacent electrical units and improves operational stability; 3. Significantly smaller size: It adopts a lightweight and compact structure, reducing the volume of the unit compartment. The fixed frame is laid out flat without redundant structure, and the overall cabinet footprint is reduced by 40% compared with traditional ring main units, making it suitable for narrow installation spaces. 4. Highly efficient and uniform heat dissipation: The integrated heat dissipation component enables synchronous heat dissipation in all unit compartments. The cavity formed by the positioning protrusions, in conjunction with the convection circuit, effectively controls the temperature rise inside the unit compartment and solves the problem of local overheating.

[0013] 5. Convenient installation and maintenance: The positioning protrusion enables quick positioning, and the locking bolts can be disassembled and installed without the need for professional tools; the independent unit compartment can be removed for maintenance without affecting the operation of other units. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 3 This is a side sectional view of the present invention. Figure 4 This is a side sectional view of the present invention. Figure 5 This is a top sectional view of the present invention. Figure 6 This is a partial three-dimensional structural schematic diagram of the present invention; Figure 7 This is a rear-view three-dimensional structural diagram of the independent electrical unit compartment of this utility model.

[0015] In the diagram: 1. Medium-voltage ring main unit cabinet; 2. Medium-voltage ring main unit cabinet door; 3. Electromagnetic isolation plate; 4. Independent electrical unit compartment; 401. Positioning groove; 402. Plug-in slot; 5. Positioning and fixing component; 501. Positioning frame; 502. Positioning protrusion; 503. Fixing frame; 504. Locking bolt; 6. Integrated heat dissipation component; 601. Integrated heat dissipation cavity shell; 602. Heat dissipation fan; 603. Connecting port; 7. Cable hole; 8. Cable clamp. Detailed Implementation

[0016] 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.

[0017] Please see Figures 1-7 The miniaturized medium-voltage ring main unit with flexible multi-unit combination provided by this utility model includes a medium-voltage ring main unit body 1, an electromagnetic isolation plate 3, an independent electrical unit compartment 4, a positioning and fixing component 5, an integrated heat dissipation component 6, and a cable sleeve 8. The specific structure is as follows: The medium-voltage ring network cabinet 1 is a rectangular hollow structure, and its front side is hinged with a medium-voltage ring network cabinet door 2. The cabinet door is used to close the cabinet and facilitate maintenance. Several electromagnetic isolation plates 3 are provided and are evenly spaced along the length of the medium-voltage ring network cabinet 1 to divide the interior of the cabinet into multiple independent electromagnetic isolation cavities. The electromagnetic isolation plates 3 are made of epoxy resin insulating board with a thickness of 10-15mm, which can effectively block electromagnetic interference between adjacent units. The independent electrical unit compartment 4 is a cuboid structure adapted to the electromagnetic isolation cavity. Each electromagnetic isolation cavity has a corresponding independent electrical unit compartment 4, which is used to assemble electrical components with different functions such as circuit breakers, load switches, grounding switches, and metering. The unit compartment is made of flame-retardant ABS material by injection molding, which makes it lighter and easier to disassemble and assemble. The positioning and fixing assembly 5 is used to detachably fix the independent electrical unit compartment 4 inside the electromagnetic isolation cavity. It includes a positioning frame 501, positioning protrusions 502, a fixing frame 503, and locking bolts 504. The positioning frame 501 is welded and fixed to the inner rear side of the electromagnetic isolation cavity, and the positioning protrusions 502 are perpendicularly protruding at its four corners. The four rear corners of the independent electrical unit compartment 4 are provided with positioning grooves 401 that are adapted to the positioning protrusions 502. Precise positioning is achieved by inserting the protrusions into the grooves. The fixing frame 503 abuts against the front side of the unit compartment and is locked to the side wall of the cabinet by four sets of locking bolts 504 to complete the fixing of the unit compartment. When disassembling, the unit compartment can be removed simply by loosening the locking bolts, which is convenient. The positioning protrusion 502 is a stepped structure integrally molded from nitrile rubber. This structure not only ensures positioning accuracy, but also creates a 5-8mm cavity between the unit compartment and the cabinet. The fixed frame 503 is made of cold-rolled steel plate and bent into shape. Its inner side is flush with the front end face of the independent electrical unit compartment 4, and its outer end is flush with the opening end of the medium voltage ring network cabinet 1, so as to avoid the structure protruding and occupying extra space. The integrated heat dissipation component 6 includes an integrated heat dissipation cavity shell 601 and a heat dissipation fan 602. The heat dissipation fan 602 is fixed at the upper end of the medium-voltage ring network cabinet 1 to provide heat dissipation airflow. The integrated heat dissipation cavity shell 601 is a hollow rectangular pipe, one end of which is connected to the air outlet of the heat dissipation fan 602, and the other end passes through the electromagnetic isolation plate 3 along the cavity and is connected to multiple independent electrical unit compartments 4. A connection port 603 is provided at the position of each independent electrical unit compartment 4. A plug-in slot 402 is opened on the rear side of the independent electrical unit compartment 4. The connection port 603 is inserted into the plug-in slot 402 to realize the connection between the integrated heat dissipation cavity shell 601 and the interior of the independent electrical unit compartment 4. Louvered windows are opened on the door 2 of the medium-voltage ring network cabinet at the position of each unit compartment, forming a convection heat dissipation loop of fan air supply → heat dissipation cavity shell → interior of unit compartment → exhaust of louvered windows, ensuring that all independent electrical unit compartments 4 dissipate heat synchronously. Both the medium-voltage ring main unit 1 and the independent electrical unit compartment 4 have cable holes 7 on their rear sides for threading connecting cables. Cable clamps 8 are inserted into the cable holes 7. The cable clamps 8 are made of silicone and are elastic, which can accommodate cables of different diameters. They also achieve a seal and prevent dust from entering the cabinet.

[0018] The beneficial effects of this utility model are as follows: 1. High flexibility in combination: The independent electrical unit compartment can be detached and installed through positioning and fixing components. The number of units can be increased or decreased and different functional units can be replaced according to power supply needs, adapting to a variety of power distribution scenarios without the need to replace the entire cabinet. 2. Low electromagnetic interference: The electromagnetic isolation plate divides the cabinet into independent chambers, and together with the unit compartments made of insulating material, it effectively blocks electromagnetic interference between adjacent electrical units and improves operational stability; 3. Significantly smaller size: It adopts a lightweight and compact structure, reducing the volume of the unit compartment. The fixed frame is laid out flat without redundant structure, and the overall cabinet footprint is reduced by 40% compared with traditional ring main units, making it suitable for narrow installation spaces. 4. Highly efficient and uniform heat dissipation: The integrated heat dissipation component enables synchronous heat dissipation in all unit compartments. The cavity formed by the positioning protrusions, in conjunction with the convection circuit, effectively controls the temperature rise inside the unit compartment and solves the problem of local overheating.

[0019] 5. Convenient installation and maintenance: The positioning protrusion enables quick positioning, and the locking bolts can be disassembled and installed without the need for professional tools; the independent unit compartment can be removed for maintenance without affecting the operation of other units.

[0020] 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 these 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 miniaturized medium-voltage ring main unit with flexible multi-unit combination, characterized in that, include: Medium-voltage ring network cabinet (1), and a medium-voltage ring network cabinet door (2) is hinged on the medium-voltage ring network cabinet (1); Electromagnetic isolation plates (3) are provided in several places. Several electromagnetic isolation plates (3) are arranged at intervals along the inside of the medium-voltage ring network cabinet (1) to divide the inside of the medium-voltage ring network cabinet (1) into multiple independent electromagnetic isolation cavities. Independent electrical unit compartment (4): Each electromagnetic isolation cavity is detachably provided with an independent electrical unit compartment (4) through a positioning and fixing component (5) for separating and assembling electrical units with different functions; An integrated heat dissipation component (6) is provided on the medium-voltage ring network cabinet (1) to connect multiple independent electrical unit compartments (4) for synchronous heat dissipation of multiple independent electrical unit compartments (4).

2. The miniaturized medium-voltage ring main unit with flexible multi-unit combination according to claim 1, characterized in that: The positioning and fixing component (5) includes a positioning frame (501), a positioning protrusion (502), a fixing frame (503), and a locking bolt (504). The positioning frame (501) is located on the inner rear side of the electromagnetic isolation cavity. The positioning protrusions (502) are provided at the four corners of the positioning frame (501). The positioning grooves (401) are provided at the four rear corners of the independent electrical unit compartment (4). The independent electrical unit compartment (4) is positioned and connected to the positioning protrusions (502) on the positioning frame (501) through the positioning grooves (401). The fixed frame (503) is abutted against the front side of the independent electrical unit compartment (4) and is locked to the medium-voltage ring network cabinet (1) by the locking bolt (504).

3. A miniaturized medium-voltage ring main unit with flexible multi-unit combination according to claim 2, characterized in that: The positioning protrusion (502) is a stepped protrusion with one large and one small section, which is integrally molded with rubber. A cavity is formed between the independent electrical unit compartment (4) and the medium-voltage ring network cabinet (1) through the positioning protrusion (502).

4. A miniaturized medium-voltage ring main unit with flexible multi-unit combination as described in claim 2, characterized in that: The inner side of the fixed frame (503) is flush with the inner side of the independent electrical unit compartment (4), and the outer end of the fixed frame (503) is flush with the opening end of the medium voltage ring network cabinet (1).

5. A miniaturized medium-voltage ring main unit with flexible multi-unit combination according to claim 3, characterized in that: The integrated heat dissipation component (6) includes an integrated heat dissipation cavity shell (601) and a heat dissipation fan (602). The cooling fan (602) is located at the upper end of the medium-voltage ring network cabinet (1). One end of the integrated cooling cavity shell (601) is connected to the cooling fan (602), and the other end of the integrated cooling cavity shell (601) passes through the electromagnetic isolation plate (3) along the cavity and is connected to multiple independent electrical unit compartments (4). The medium-voltage ring main unit door (2) is provided with louvered windows at the positions corresponding to each of the independent electrical unit compartments (4).

6. A miniaturized medium-voltage ring main unit with flexible multi-unit combination according to claim 5, characterized in that: The integrated heat dissipation cavity shell (601) is provided with a communication port (603) at the position corresponding to the independent electrical unit compartment (4). The rear side of the independent electrical unit compartment (4) is provided with a plug-in slot (402) at the position corresponding to the communication port (603). The integrated heat dissipation cavity shell (601) is inserted into the plug-in slot (402) through the communication port (603) and communicates with the interior of the independent electrical unit compartment (4).

7. A miniaturized medium-voltage ring main unit with flexible multi-unit combination according to claim 1, characterized in that: Cable holes (7) are provided on the rear side of both the medium-voltage ring network cabinet (1) and the independent electrical unit compartment (4), and cable sleeves (8) are inserted into the cable holes (7).

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