Power distribution cabinet with modular structure

Abstract

The utility model relates to a power distribution cabinet with a modularized structure, and relates to the technical field of power distribution cabinets, the power distribution cabinet comprises a cabinet body, each mounting plate module is detachably provided with cooling and heat dissipation terminal boxes in a vertically staggered manner, the top surface of each cooling and heat dissipation terminal box is provided with an inverted L-shaped hoisting rod, the free end of each L-shaped hoisting rod is provided with a temperature sensor, and the temperature sensor is connected with the cabinet body. The temperature sensor extends to the position between the electric devices in the inner cavity of the cabinet body and is used for monitoring the temperature in real time, each air supply pipeline is connected with the adjacent cooling and heat dissipation terminal boxes through hoses, and the heat dissipation air source module conveys air into the cooling and heat dissipation terminal boxes through the air supply pipelines and the hoses and discharges the air from outlets of the cooling and heat dissipation terminal boxes. And blowing and heat dissipation are carried out on the electric device whose heat accumulation is monitored. The air flow path can be accurately controlled according to information fed back by the temperature sensor, it is ensured that cooling air only flows to areas with abnormal temperature, the heat dissipation efficiency is improved, and energy is saved.

Description

Technical Field

[0001] This utility model relates to the field of power distribution cabinet technology, and in particular to a power distribution cabinet with a modular structure. Background Technology

[0002] Distribution cabinets (boxes) are divided into power distribution cabinets (boxes), lighting distribution cabinets (boxes), and metering cabinets (boxes), and are the final-level equipment in a power distribution system. Distribution cabinets are a general term for motor control centers. Distribution cabinets are used in situations where the load is relatively dispersed and there are fewer circuits; motor control centers are used in situations where the load is concentrated and there are more circuits. They distribute the electrical energy from a circuit of the upstream power distribution equipment to the nearest load. This level of equipment should provide protection, monitoring, and control for the load.

[0003] Most existing distribution cabinets rely on natural convection or fans for overall ventilation, which is not efficient for cooling specific areas. When a component generates a lot of heat, this cooling method can lead to localized overheating, affecting the normal operation of the equipment and even causing malfunctions.

[0004] A search revealed a Chinese patent publication number: CN214337169U UPS distribution cabinet, which includes a cabinet body, a moisture-proof box installed at the bottom of the cabinet body, a ventilation grille set on the side wall of the cabinet body, and a heat dissipation fan installed inside the cabinet body; the moisture-proof box contains a desiccant and has ventilation holes that communicate with the inner cavity of the cabinet body; the heat dissipation fan is set on one side of the ventilation grille to guide airflow from the ventilation grille into the inner cavity of the cabinet body.

[0005] The cited patent documents also suffer from the same problem, relying on natural convection or fans for overall ventilation, which cannot efficiently dissipate heat in specific areas. When an electrical component generates a large amount of heat, this method of heat dissipation may lead to localized overheating, affecting the normal operation of the equipment and even causing malfunctions. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of the existing technology by providing a power distribution cabinet with a modular structure, which can effectively solve the above-mentioned problems.

[0007] To achieve the above requirements, the technical solution adopted by this utility model to solve its technical problem is as follows:

[0008] A modular power distribution cabinet is provided, including a cabinet body and a door hinged to the front side of the cabinet body. A fan module box is located in the lower part of the cabinet body's inner cavity. The fan module box contains a telescopic fan base module, and the telescopic fan base module contains a heat dissipation fan module. Air supply ducts are connected through both sides of the top surface of the fan module box. Mounting plate modules are located on both inner walls of the cabinet body. Each mounting plate module has detachably staggered cooling and heat dissipation terminal boxes. Each cooling and heat dissipation terminal box has an inverted L-shaped hanging rod on its top surface. A temperature sensor is located at the free end of the L-shaped hanging rod and extends into the electrical components within the cabinet body for real-time temperature monitoring. Each fan duct is connected to multiple adjacent cooling and heat dissipation terminal boxes via a flexible hose.

[0009] In this preferred embodiment, the telescopic air source base module has an L-shaped structure and is horizontally arranged in the inner cavity of the air source module box. The heat dissipation air source module includes a blower fixed on the inner wall of the telescopic air source base module, an air supply pipe integrally connected to the output end of the blower, and branch side pipes symmetrically penetrating the outer walls on both sides of the air supply pipe.

[0010] In this preferred embodiment, the two branch side pipes are respectively connected to the bottom ends of the two air supply pipes via connecting pipes in a sealed manner. An electric push-pull rod is installed on the side wall of the air source module box, and the free end of the electric push-pull rod is fixedly connected to the outer wall of the telescopic air source base module.

[0011] In a preferred embodiment of this solution, the air source module box has multiple air inlets on one side of the outer wall of the cabinet, and the telescopic air source base module has an air inlet filter frame on the side near the air inlet. The air inlet filter frame is equipped with a first air inlet filter and a second air inlet filter.

[0012] In this preferred embodiment, the aperture size of the first air inlet filter is larger than that of the second air inlet filter, and the first air inlet filter is attached to the inner wall of the air inlet.

[0013] In this preferred embodiment, each mounting plate module has multiple mounting slots equidistantly spaced longitudinally on its surface, and each cooling and heat dissipation terminal box has an integrally connected mounting block on its outer wall for engaging with the mounting slots. The cooling and heat dissipation terminal box is fixed by engaging the mounting block with the mounting slots.

[0014] In this preferred embodiment, each of the cooling and heat dissipation terminal boxes is equipped with a heat dissipation filter at its air outlet.

[0015] In this preferred embodiment, each of the air supply ducts has multiple branch joints equidistantly arranged on its outer periphery. Each branch joint has an internal solenoid valve, and the branch joints are connected to the cooling and heat dissipation terminal box through a sealed connecting hose.

[0016] In this preferred embodiment, the inner wall of the back of the cabinet is symmetrically provided with multiple exhaust vents, so that the air blown towards the electrical components for heat dissipation can be discharged from the exhaust vents.

[0017] The beneficial effects of this utility model are as follows:

[0018] This modular power distribution cabinet addresses the common problem of fixed-installation cooling systems in traditional cabinets, which require disassembly of the entire unit or numerous components for repairs, resulting in high maintenance costs and time. Our modular air source module box integrates key components such as blowers, air ducts, and branch side pipes into a retractable air source base module, housed within the air source module box, thus achieving modularity in the cooling system. This simplifies the layout of the cooling system and significantly improves the convenience of maintenance and cleaning. The electric push-pull rod, combined with the retractable air source base module, allows the air source module to be easily pulled out or pushed back into the cabinet, reducing maintenance time and labor intensity.

[0019] Traditional distribution cabinets often use overall ventilation, which cannot efficiently dissipate heat in specific areas. This can lead to insufficient cooling in some areas and excessive cooling in others, wasting energy and resulting in low efficiency. This technical solution uses intelligently controlled solenoid valves. Each cooling terminal box is equipped with an independent solenoid valve, which can precisely control the airflow path based on information from temperature sensors. This ensures that cooling air flows only to areas with abnormal temperatures, improving heat dissipation efficiency and saving energy. Air ducts connect to multiple cooling terminal boxes via flexible hoses, allowing for flexible adjustment of the cooling positions to adapt to different electrical layout requirements.

[0020] Traditional power distribution cabinets have complex heat dissipation components that are difficult to adjust, increasing installation difficulty and time. This technical solution, with its mounting plate module, mounting slots, and mounting blocks, allows for quick installation and removal of the cooling terminal box. Furthermore, the installation position can be adjusted according to actual needs, improving installation efficiency and flexibility. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0024] Figure 3 This is a schematic diagram of the cooling and heat dissipation terminal box of this utility model.

[0025] Figure 4 This is a schematic diagram of the installation structure of the blower of this utility model;

[0026] Figure 5 This is a schematic diagram showing the disassembled structure of the first and second air inlet filters of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] In the diagram: 1. Cabinet; 2. Cabinet door; 3. Telescopic air source base module; 4. Air source module box; 5. Air inlet; 6. Exhaust outlet; 7. Air supply duct; 8. Cooling and heat dissipation terminal box; 9. Heat dissipation filter; 10. Branch connector; 11. Solenoid valve; 12. Hose; 13. Mounting plate module; 14. L-shaped lifting rod; 15. Temperature sensor; 16. Mounting bayonet; 17. Mounting block; 18. Air inlet filter frame; 19. Electric push-pull rod; 20. Blower; 21. Air duct; 22. Branch side pipe; 23. First air inlet filter; 24. Second air inlet filter. Detailed Implementation

[0029] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0032] Furthermore, the terms indicating orientation, such as "up," "down," "left," "right," "upper end," "lower end," and "longitudinal," are all based on the posture and position of the device or equipment described in this solution during normal use.

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are some, but not all, embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] This embodiment discloses, as follows: Figures 1 to 5 The diagram shows a modular power distribution cabinet, comprising a cabinet body 1 and a cabinet door 2 hinged to the front side of the cabinet body 1. A fan module box 4 is located in the lower part of the inner cavity of the cabinet body 1. The fan module box 4 contains a telescopic fan base module 3, and the telescopic fan base module 3 contains a cooling fan module. Air supply ducts 7 are vertically connected to both sides of the top surface of the fan module box 4. Mounting plate modules 13 are installed on the inner walls of both sides of the cabinet body 1. Each mounting plate module 13 has a detachable, staggered cooling terminal box 8. The top surface of each cooling terminal box 8 has an inverted... The L-shaped lifting rod 14 has a temperature sensor 15 at its free end. The temperature sensor 15 extends into the cavity of the cabinet 1 between the electrical components for real-time temperature monitoring. The L-shaped lifting rod 14 can be made of a bendable insulating material so that the suspended position of the temperature sensor 15 can be rotated according to the operation needs of maintenance personnel. Each air supply duct 7 is connected to multiple adjacent cooling and heat dissipation terminal boxes 8 through a flexible hose 12. The heat dissipation air source module delivers cold air to the cooling and heat dissipation terminal box 8 through the air supply duct 7 and the flexible hose 12, and discharges it from the outlet of the cooling and heat dissipation terminal box 8 to cool down the electrical components where heat accumulation is detected.

[0035] In this embodiment, the telescopic air source base module 3 has an L-shaped structure and is horizontally arranged in the inner cavity of the air source module box 4. Both the horizontal and vertical ends of the telescopic air source base module 3 are horizontally arranged. The heat dissipation air source module includes a blower 20 fixed on the inner side wall of the telescopic air source base module 3, an air supply pipe 21 integrally connected to the output end of the blower 20, and branch side pipes 22 symmetrically penetrating the outer walls on both sides of the air supply pipe 21. Furthermore, the two branch side pipes 22 are respectively sealed and connected to the bottom ends of the two air supply pipes 7 through connecting pipes. An electric push-pull rod 19 is installed on the side wall of the air source module box 4, and the free end of the electric push-pull rod 19 is connected to the telescopic air source base module 3. The electric push-pull rod 19 is designed to help push the telescopic air source seat module 3 out of the air source module box 4 or pull it back, which is helpful for the disassembly, cleaning and maintenance of the blower 20, air supply pipe 21 and branch side pipe 22; and to prevent the branch side crown 22 from separating from the air supply pipe 7 during the movement of the telescopic air source module 3, the length of the connecting pipe is provided with redundancy.

[0036] In this embodiment, multiple air inlets 5 are provided on one side of the air source module box 4 and on the outer wall of one side of the cabinet 1. The telescopic air source base module 3 has an air inlet filter frame 18 on the side near the air inlet 5. The air inlet filter frame 18 is provided with a first air inlet filter 23 and a second air inlet filter 24 respectively. Furthermore, the aperture size of the first air inlet filter 23 is larger than that of the second air inlet filter 24, and the first air inlet filter 23 is attached to the inner wall of the air inlet 5. When the air inlet of the blower 20 enters through the air inlet 5, it needs to be filtered sequentially by the first air inlet filter 23 and the second air inlet filter 24.

[0037] In this embodiment, each mounting plate module 13 has multiple mounting slots 16 longitudinally and equidistantly spaced on its surface. Each cooling and heat dissipation terminal box 8 has an integrally connected mounting block 17 on its outer wall, which is used to engage with the mounting slots 16. The mounting block 17 can be either straight or L-shaped. When using a L-shaped structure, its horizontal end is vertically and fixedly connected to the cooling and heat dissipation terminal box 8. By engaging the mounting block 17 with the mounting slots 16, the cooling and heat dissipation terminal box 8 is secured. The cooperation between the mounting block 17 and the mounting slots 16 facilitates the selection and installation of the cooling and heat dissipation terminal box 8 at the desired location.

[0038] In this embodiment, each cooling and heat dissipation terminal box 8 is provided with a heat dissipation filter 9 at its air outlet. The pore size of the heat dissipation filter 9 can be selected according to actual needs.

[0039] In this embodiment, each air supply duct 7 has multiple branch joints 10 evenly spaced on its outer periphery. Each branch joint 10 has a solenoid valve 11 inside. The branch joint 10 is connected to the cooling and heat dissipation terminal box 8 through a sealed connecting hose 12. When one of the temperature sensors 15 detects high temperature in an adjacent electrical component, it transmits the temperature signal to the PLC built into the cabinet 1. When the PLC determines that the temperature exceeds a preset value, it controls the blower 20 and the solenoid valve 11 at the end of the cooling and heat dissipation terminal box 8 where the temperature sensor 15 is located to open. This allows air to flow from the hose 12 to the cooling and heat dissipation terminal box 8 where the temperature sensor 15 is located, while the other solenoid valves 11 remain closed. This allows the air to be concentrated and directed towards the same location for heat dissipation. This design not only helps with heat dissipation but also enables concentrated and targeted heat dissipation and cooling.

[0040] In this embodiment, multiple exhaust vents 6 are symmetrically arranged on the inner wall of the back of the cabinet 1, and the air blown towards the electrical components for heat dissipation can be discharged from the exhaust vents 6.

[0041] Working principle:

[0042] This modular power distribution cabinet, when powered on, has temperature sensors 15 distributed among various electrical components within the cabinet 1 to monitor the ambient temperature in real time and send the data to the PLC. During normal operation of the power distribution cabinet, the temperature sensors 15 continuously collect temperature information from surrounding electrical components and transmit this data to the PLC via internal communication lines.

[0043] Once a temperature sensor 15 detects that the temperature at its location exceeds a preset safety threshold, it immediately sends an alarm signal to the PLC. Upon receiving the alarm, the PLC assesses the current temperature situation based on preset values ​​and determines the necessary actions. If the PLC determines that there is indeed an overheating risk, it issues a command to start the blower 20. The blower 20 starts operating, drawing in filtered cooling air from the air inlet 5. Fresh air enters the cabinet 1 through the air inlet 5, undergoing two stages of filtration—the first air inlet filter 23 and the second air inlet filter 24—to remove large particles and fine dust, ensuring the quality of the incoming air. The cooling air is first delivered to the air duct 21, and then evenly distributed to the two air supply ducts 7 via the branch side pipe 22. The solenoid valves 11 in the branch joints 10 on the air supply ducts 7 selectively open or close according to the PLC's commands. Only those solenoid valves 11 located near the abnormal temperature area are opened, allowing cooling air to flow through the hoses 12 to the corresponding cooling and heat dissipation terminal boxes 8.

[0044] After receiving cooling air from the hose 12, the cooling terminal box 8 blows the cool air to the surrounding electrical components through its air outlet, helping to lower the temperature of the area. At the same time, the heat dissipation filter 9 prevents dust from re-entering the cabinet 1 with the airflow.

[0045] As the cooling air acts, temperature sensor 15 continues to monitor temperature changes. Once the temperature drops to a safe range, temperature sensor 15 notifies the PLC. Upon receiving the message that the temperature has returned to normal, the PLC may either keep blower 20 running for a period of time to ensure thorough cooling, or directly shut down blower 20 and the associated solenoid valve 11 to stop the cooling operation.

[0046] Thanks to the use of a telescopic air source base module 3 and an electric push-pull rod 19, the entire air source module box 4 can be easily pulled out using the electric push-pull rod 19 when maintenance or cleaning of the blower 20, air duct 21, and branch side pipe 22 is required, simplifying the maintenance process. The first air inlet filter 23 and the second air inlet filter 24 inside the air inlet filter frame 18 can be easily disassembled and replaced, ensuring good filtration performance during long-term use. The position of the cooling and heat dissipation terminal box 8 can be quickly adjusted according to actual needs using the mounting slots 16 and mounting blocks 17 on the mounting plate module 13, optimizing the heat dissipation layout.

[0047] After being cooled, the hot air is discharged from the cabinet 1 through the exhaust vent 6, completing a full air circulation and maintaining a suitable working temperature inside the cabinet 1.

[0048] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A power distribution cabinet having a modular construction arrangement comprising a cabinet body and a cabinet door hingedly attached to a front face of the cabinet body, characterised in that: The inner cavity of the cabinet body is provided with a wind source module box, the inside of the wind source module box is provided with a telescopic wind source seat module, the inside of the telescopic wind source seat module is provided with a heat dissipation wind source module, and the top surface of the wind source module box is provided with air supply pipelines penetratingly connected on both sides.

2. A power distribution unit having a modular configuration as claimed in claim 1, wherein: The telescopic wind source seat module is in an L-shaped structure and horizontally arranged in the inner cavity of the wind source module box, and the heat dissipation wind source module comprises a blower fan fixed on the inner side wall of the telescopic wind source seat module, a wind conveying pipe integrally connected to the output end of the blower fan, and branch side pipes symmetrically penetrating through the outer walls on both sides of the wind conveying pipe.

3. A power distribution unit having a modular configuration as claimed in claim 2, wherein: Two branch side pipes are respectively in sealed communication with the bottom ends of two air supply pipelines through connecting pipes, and an electric push-pull rod is mounted on the side wall of the wind source module box, and the free ends of the electric push-pull rod are fixedly connected with the outer wall of the telescopic wind source seat module.

4. A power distribution unit having a modular configuration as claimed in claim 3, wherein: A plurality of air inlet mesh openings are arranged on one side of the wind source module box and located on one side of the outer wall of the cabinet body, one air inlet filter frame is arranged on the side of the telescopic wind source seat module close to the air inlet mesh openings, and the inside of the air inlet filter frame is respectively provided with a first air inlet filter and a second air inlet filter.

5. A power distribution unit having a modular configuration as claimed in claim 4, wherein: The pore size of the first air inlet filter is larger than that of the second air inlet filter, and the first air inlet filter is attached to the inner wall of the air inlet mesh opening.

6. A power distribution unit having a modular configuration as defined in claim 5, wherein: The surface of each mounting plate module is longitudinally and equidistantly provided with a plurality of mounting sockets, and the outer wall of each cooling and heat dissipation terminal box is integrally connected with a mounting clamping block for clamping into the mounting socket.

7. A power distribution unit having a modular configuration as defined in claim 6, wherein: The outer wall of each cooling and heat dissipation terminal box is integrally connected with a mounting clamping block for clamping into the mounting socket.

8. A power distribution unit having a modular configuration as defined in claim 7, wherein: The outer wall of each cooling and heat dissipation terminal box is integrally connected with a mounting clamping block for clamping into the mounting socket.

9. A power distribution unit having a modular configuration as defined in claim 8, wherein: The outer wall of each cooling and heat dissipation terminal box is integrally connected with a mounting clamping block for clamping into the mounting socket. The back inner wall of the cabinet body is symmetrically provided with a plurality of air outlet mesh openings, so that the air blown to the electrical devices for heat dissipation can be discharged from the air outlet mesh openings.

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