Flame-retardant high-low voltage switch cabinet

Abstract

The utility model discloses a flame-retardant high-low voltage switch cabinet, which belongs to the technical field of high-low voltage switch cabinets, and is characterized by comprising a flame-retardant shell, the inner side of the flame-retardant shell is fixedly connected with a high-low voltage switch cabinet body, and the bottom of the inner side of the high-low voltage switch cabinet is fixedly connected with a cooling mechanism. Two cabinet doors rotate on the front side of the flame-retardant shell, a control mechanism is installed on the front side of the cabinet door on the right side, the cooling mechanism forms cooling liquid circulation through a liquid storage tank, a circulating pump, a cooling pipeline, a guide pipe and a backflow pipe, and the circulating pump can drive cooling liquid to circularly flow between the cooling pipeline and the placement plate to take away heat generated by electrical elements on the placement plate. The high-efficiency heat dissipation is achieved, the temperature in the switch cabinet is effectively prevented from being too high, the five placing plates are arranged, the heat dissipation area is increased, electrical elements can be installed on the placing plates in a layered mode, cooling liquid can cool the placing plates on each layer, and the uniformity and comprehensiveness of heat dissipation are improved.

Description

Technical Field

[0001] This utility model relates to the field of high and low voltage switchgear technology, and in particular to a flame-retardant high and low voltage switchgear. Background Technology

[0002] In today's power systems, high and low voltage switchgear, as key equipment for power distribution and control, is widely used in various fields such as industry, commerce, and residential buildings. With the continuous growth of power demand and the increasingly complex operating environment of electrical equipment, higher requirements are being placed on the safety and reliability of high and low voltage switchgear.

[0003] In the current use of high and low voltage switchgear, the cabinet is equipped with a frame for installing electrical components. The electrical equipment is stably installed on the frame, which makes it inconvenient to debug the frame according to actual usage requirements. At the same time, the messy arrangement of the wires between various electrical components makes subsequent inspection and maintenance operations inconvenient.

[0004] Existing patent (publication number: CN220510522U) discloses a flame-retardant high and low voltage switchgear, comprising a cabinet, a mounting frame, and a mounting platform. The mounting platform rests on the mounting frame within the cabinet's internal cavity. The mounting frame consists of vertical and horizontal frames, with equally spaced limiting rods on the vertical frames. The mounting frame at the bottom of the mounting platform is attached to the limiting rods. A terminal block is mounted on the mounting platform. This invention allows the mounting platform for installing electrical components to be positioned on the mounting frame inside the cabinet. During use, the position can be adjusted according to actual needs, improving ease of use. Simultaneously, the mounting platform utilizes the mounting feet on the mounting frame to attach to the limiting rods, facilitating quick and easy assembly and disassembly. The mounting platform is equipped with a terminal block for wiring, ensuring stable connection of the line ends, facilitating maintenance and repair, and enabling rapid wiring operations, thus improving work efficiency.

[0005] To address the aforementioned issues, existing patents have provided solutions. However, existing flame-retardant high and low voltage switchgear lacks a cooling structure with a mounting plate. This results in maintenance personnel having to frequently shut down the power to open the door and cool down the cabinet when it is running at full load in summer, thus affecting the reliability of power supply.

[0006] Therefore, a flame-retardant high and low voltage switchgear is proposed. Utility Model Content

[0007] The purpose of this utility model is to provide a flame-retardant high and low voltage switchgear that can solve the problem that existing high and low voltage switchgear lacks a cooling plate structure, which leads to frequent power outages and door openings for cooling when the internal temperature of the cabinet is too high during full-load operation in summer, thus affecting the reliability of power supply.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a flame-retardant high and low voltage switchgear, comprising a flame-retardant housing, a high and low voltage switchgear body fixedly connected to the inner side of the flame-retardant housing, a cooling mechanism fixedly connected to the bottom of the inner side of the high and low voltage switchgear body, and two cabinet doors rotating on the front side of the flame-retardant housing, with a control mechanism installed on the front side of the right cabinet door.

[0009] The cooling mechanism includes a liquid storage tank, a circulating pump, cooling pipes, five placement plates, a guide pipe, a return pipe, and several ventilation holes. The liquid storage tank is fixedly connected to the right side of the bottom inside the high and low voltage switchgear body. The circulating pump is fixedly connected to the left side of the bottom inside the high and low voltage switchgear body. The right side of the circulating pump is fixedly connected to the bottom left side of the high and low voltage switchgear body. The cooling pipes are fixedly connected to the left side of the circulating pump. The placement plates are installed inside the high and low voltage switchgear body.

[0010] Preferably, the bottom of the left side of the cooling pipe is fixedly connected to the left side of the bottom placement plate, the guide pipes are fixedly connected to both sides of the placement plate, the return pipe is fixedly connected to the right side of the top placement plate, the bottom of the return pipe passes through the high and low voltage switch cabinet body and the liquid storage tank and is fixedly connected to the right side of the liquid storage tank, and the ventilation hole is opened on the rear side of the high and low voltage switch cabinet body.

[0011] Preferably, the control mechanism includes five temperature sensors, several semiconductor cooling plates, a PLC controller, and a ventilation fan, with the temperature sensors fixedly connected to the bottom of the placement plate.

[0012] Preferably, the semiconductor cooling plate is fixedly connected to the inside of the liquid storage tank, and the PLC controller is installed on the front side of the right cabinet door.

[0013] Preferably, the ventilation fan is installed inside the ventilation hole, and a dust filter is fixedly connected to the inside of the ventilation hole.

[0014] Preferably, the flame-retardant shell has several exhaust vents on its rear side, and a filter screen is fixedly connected to the inner side of each exhaust vent.

[0015] Preferably, a handle is fixedly connected to the front side of the cabinet door, and the surface of the handle is engraved with anti-slip texture.

[0016] Preferably, a support column is fixedly connected to the chamfer at the bottom of the flame-retardant shell, and the bottom of the support column is engraved with anti-slip texture.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The cooling mechanism of this application forms a coolant circulation system through a liquid storage tank, a circulating pump, cooling pipes, guide pipes, and return pipes. The circulating pump can drive the coolant to circulate between the cooling pipes and the mounting plates, carrying away the heat generated by the electrical components on the mounting plates, achieving efficient heat dissipation, effectively preventing the temperature inside the switch cabinet from becoming too high. The five mounting plates increase the heat dissipation area, allowing electrical components to be installed on the mounting plates in layers. The coolant can cool each layer of mounting plates, improving the uniformity and comprehensiveness of heat dissipation, and helping to maintain the stable operating temperature of electrical components on each layer.

[0019] 2. The five temperature sensors in the control mechanism of this application are fixedly connected to the bottom of each placement plate, which can monitor the temperature of each placement plate in real time and accurately, providing accurate data support for subsequent temperature control. The PLC controller can intelligently control the working status of the semiconductor cooling plate and the ventilation fan according to the temperature data fed back by the temperature sensors. When the temperature exceeds the set threshold, the semiconductor cooling plate starts to cool the coolant in the liquid storage tank, and at the same time the ventilation fan turns on to enhance ventilation and heat dissipation, ensuring that the temperature inside the switch cabinet is always kept within a reasonable range. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the flame-retardant high and low voltage switchgear of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the high and low voltage switchgear body of this utility model;

[0022] Figure 3 This is a schematic diagram of the cooling mechanism of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the semiconductor cooling plate of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the PLC controller of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the exhaust port of this utility model.

[0026] In the diagram, 1. Flame-retardant housing; 2. High and low voltage switchgear body; 3. Cooling mechanism; 31. Liquid storage tank; 32. Circulating pump; 33. Cooling pipe; 34. Placement plate; 35. Guide pipe; 36. Return pipe; 37. Ventilation hole; 4. Cabinet door; 5. Control mechanism; 51. Temperature sensor; 52. Semiconductor cooling plate; 53. PLC controller; 54. Ventilation fan; 6. Dust filter; 7. Exhaust vent; 8. Filter screen; 9. Handle; 10. Support column. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1-6 The present invention provides the following technical solution:

[0029] A flame-retardant high and low voltage switchgear includes a flame-retardant housing 1, a high and low voltage switchgear body 2 fixedly connected to the inner side of the flame-retardant housing 1, a cooling mechanism 3 fixedly connected to the bottom of the inner side of the high and low voltage switchgear body 2, two cabinet doors 4 rotating on the front side of the flame-retardant housing 1, and a control mechanism 5 installed on the front side of the right cabinet door 4.

[0030] The cooling mechanism 3 includes a liquid storage tank 31, a circulating pump 32, a cooling pipe 33, five placement plates 34, a guide pipe 35, a return pipe 36, and several ventilation holes 37. The liquid storage tank 31 is fixedly connected to the right side of the bottom inside the high and low voltage switchgear body 2. The circulating pump 32 is fixedly connected to the left side of the bottom inside the high and low voltage switchgear body 2. The right side of the circulating pump 32 is fixedly connected to the bottom left side of the high and low voltage switchgear body 2. The cooling pipe 33 is fixedly connected to the left side of the circulating pump 32. The placement plates 34 are installed inside the high and low voltage switchgear body 2.

[0031] In this embodiment: The flame-retardant outer shell 1 provides fire protection, effectively suppressing flame spread and reducing fire risk. It also supports and limits the high and low voltage switchgear body 2 and the cabinet door 4. The high and low voltage switchgear body 2 integrates high and low voltage electrical components, realizing the control, distribution, and protection functions of high and low voltage power, meeting the power demand of different voltage levels in the power system. It also supports and limits the cooling mechanism 3 and the control mechanism 5. The cabinet door 4 facilitates installation, debugging, maintenance, and repair operations for personnel. The coolant tank 31 stores coolant for cooling. The liquid circulation provides storage space and supports and limits the semiconductor cooling plate 52. A filling pipe is fixedly connected to the right side of the liquid storage tank 31, allowing the user to easily add coolant to the inside of the tank. The circulation pump 32 provides power, driving the coolant to circulate in the loop formed by the cooling pipe 33, guide pipe 35, placement plate 34, and return pipe 36. This facilitates heat exchange between the coolant and the electrical components on the placement plate 34, removing heat and achieving cooling. The cooling pipe 33 delivers the coolant output by the circulation pump 32 to the bottom placement plate 34. The 34 provides a mounting platform for electrical components. The layered arrangement increases the utilization of installation space and also enlarges the heat dissipation area, allowing the coolant to cool the electrical components more comprehensively and improving heat dissipation efficiency. The guide pipes 35 are fixedly connected to the left sides of the first and second placement plates 34 (from top to bottom), the right sides of the second and third placement plates 34, the left sides of the third and fourth placement plates 34, and the right sides of the fourth and fifth placement plates 34, guiding the coolant to flow orderly between the placement plates 34, ensuring... The coolant can uniformly cool each placement plate 34, ensuring consistent cooling effect. The top of the return pipe 36 is fixedly connected to the right side of the first placement plate 34 from top to bottom. The return pipe 36 returns the coolant that has been heated by the placement plate 34 to the storage tank 31, realizing the recycling of coolant, saving coolant resources, and reducing operating costs. The ventilation hole 37 works in conjunction with the ventilation fan 54 to achieve natural ventilation and forced ventilation, accelerate air circulation, remove heat from the switch cabinet, and assist the cooling mechanism 3 in further improving the heat dissipation effect and reducing the temperature inside the switch cabinet.

[0032] Specifically, such as Figure 3 As shown, the bottom of the left side of the cooling pipe 33 is fixedly connected to the left side of the bottom placement plate 34, the guide pipe 35 is fixedly connected to both sides of the placement plate 34, the return pipe 36 is fixedly connected to the right side of the top placement plate 34, the bottom of the return pipe 36 passes through the high and low voltage switch cabinet body 2 and the liquid storage tank 31 respectively and is fixedly connected to the right side of the liquid storage tank 31, and the ventilation hole 37 is opened on the rear side of the high and low voltage switch cabinet body 2.

[0033] Specifically, such as Figure 4 , Figure 5As shown, the control mechanism 5 includes five temperature sensors 51, several semiconductor cooling plates 52, a PLC controller 53, and a ventilation fan 54. The temperature sensors 51 are fixedly connected to the bottom of the placement plate 34.

[0034] Specifically, such as Figure 4 , Figure 5 As shown, the semiconductor cooling plate 52 is fixedly connected to the inside of the liquid storage tank 31, and the PLC controller 53 is installed on the front side of the right cabinet door 4.

[0035] In this embodiment: by setting temperature sensor 51, the temperature of each layer of placement plate 34 can be monitored in real time, providing temperature data to PLC controller 53 so as to understand the temperature status inside the switch cabinet in a timely manner and provide a basis for temperature control. When the temperature sensor 51 detects that the temperature exceeds the set threshold, the semiconductor cooling plate 52 can cool the coolant in the liquid storage tank 31 under the control of PLC controller 53, reduce the temperature of the coolant, improve the heat dissipation capacity of the coolant, and thus more effectively reduce the temperature inside the switch cabinet. PLC controller 53 receives the temperature data from temperature sensor 51 and intelligently controls the working status of semiconductor cooling plate 52, circulation pump 32 and ventilation fan 54 according to preset control logic, so as to realize automatic adjustment and control of the temperature inside the switch cabinet, ensuring that the switch cabinet operates within a suitable temperature range. Under the control of PLC controller 53, the ventilation fan 54 starts when the temperature rises, accelerates the air flow speed through ventilation hole 37, enhances the ventilation and heat dissipation effect, and quickly removes the heat inside the switch cabinet to reduce the temperature.

[0036] Specifically, such as Figure 3 , Figure 4 As shown, the ventilation fan 54 is installed inside the ventilation hole 37, and a dust filter 6 is fixedly connected to the inside of the ventilation hole 37.

[0037] Specifically, such as Figure 6 As shown, a number of exhaust vents 7 are provided on the rear side of the flame-retardant housing 1, and a filter screen 8 is fixedly connected to the inner side of the exhaust vent 7.

[0038] In this embodiment: by setting a dust filter 6, dust and debris can be effectively blocked from entering the switch cabinet through the ventilation hole 37, preventing dust from accumulating on electrical components. By setting an exhaust vent 7, in conjunction with the ventilation fan 54, an air circulation channel is formed to exhaust the hot air in the switch cabinet, promote air circulation, and further improve the heat dissipation effect. By setting a filter 8, external dust and debris are prevented from entering the switch cabinet through the exhaust vent 7.

[0039] Specifically, such as Figure 5 As shown, a handle 9 is fixedly connected to the front side of the cabinet door 4, and the surface of the handle 9 is engraved with anti-slip texture.

[0040] Specifically, such as Figure 6 As shown, a support column 10 is fixedly connected to the chamfer at the bottom of the flame-retardant shell 1, and the bottom of the support column 10 is engraved with anti-slip texture.

[0041] In this embodiment: by setting handle 9, it is convenient for staff to open and close cabinet door 4. By setting anti-slip texture, the friction between hand and handle 9 is increased. By setting support column 10, the switch cabinet is supported, so that the switch cabinet can be placed stably on the ground. By setting anti-slip texture, the friction with the ground is increased, preventing the switch cabinet from sliding due to external force during use.

[0042] Working Principle: First, the user moves the flame-retardant housing 1 to the designated working position. Then, the user holds the handle 9 and opens the cabinet door 4. Subsequently, coolant is added to the inside of the reservoir 31 through the filling pipe on the right side of the reservoir 31. Next, the user begins to install various electrical components onto the top of each placement plate 34. After the electrical components are installed and checked to be correct, the user starts the electrical components to put them into normal working condition. At this time, the user powers on and starts the PLC controller 53 and the temperature sensor 51. After starting, the temperature sensor 51 can detect the temperature change of each placement plate 34 in real time. Furthermore, during the operation of the switchgear, once the temperature sensor 51 detects that the temperature of one or more placement plates 34 exceeds the preset safety threshold, the temperature sensor 51 will quickly transmit this signal to the PLC controller 53. After receiving the abnormal temperature signal, the PLC controller 53 will immediately control the semiconductor cooling plate 52, the ventilation fan 54, and the circulation pump 32 to start working according to the preset control logic. The semiconductor cooling plate 52 will start cooling the coolant inside the liquid storage tank 31 to reduce the temperature of the coolant. The ventilation fan 54 will vent the hot air inside the high and low voltage switchgear body 2 through the ventilation holes 37 on the rear side of the switchgear body. Rapid air exchange accelerates air circulation, expelling hot air from the cabinet and helping to lower the internal temperature. After the circulation pump 32 starts, it extracts coolant from the inside of the storage tank 31 and pressurizes it, delivering it through the cooling pipe 33 to the bottom placement plate 34. Under pressure, the coolant continues to flow upwards through the guide pipe 35 on the right side of the bottom placement plate 34, sequentially flowing through each layer of placement plates 34, exchanging heat thoroughly with the electrical components on the placement plates 34, carrying away the heat generated by the electrical components. When the coolant flows to the right side of the top placement plate 34, it flows back to the inside of the storage tank 31 through the return pipe 36. Subsequently, as the cooling mechanism 3 continues to work, when the temperature sensor 51 detects that the temperature of the placement plate 34 has dropped to the preset normal range, it will send a signal to the PLC controller 53 again. The PLC controller 53 will make intelligent judgments and controls according to the preset program. It can control the ventilation fan 54 and the semiconductor cooling plate 52 to reduce power according to the actual temperature situation in order to maintain the current suitable temperature and save energy. Alternatively, after the temperature has completely returned to normal and stabilized, it can control the semiconductor cooling plate 52, the ventilation fan 54 and the circulation pump 32 to turn off, so that the entire cooling system enters the standby state and waits for the next temperature abnormality to restart.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flameproof high-low voltage switchgear comprising a flameproof enclosure (1), characterized in that: The flame-retardant housing (1) is fixedly connected to the inner side of the high and low voltage switch cabinet body (2), and the bottom of the inner side of the high and low voltage switch cabinet body (2) is fixedly connected to the cooling mechanism (3). The flame-retardant housing (1) has two cabinet doors (4) on the front side, and the front side of the right cabinet door (4) is equipped with a control mechanism (5). The cooling mechanism (3) includes a liquid storage tank (31), a circulation pump (32), a cooling pipe (33), five placement plates (34), a guide pipe (35), a return pipe (36), and several ventilation holes (37). The liquid storage tank (31) is fixedly connected to the right side of the bottom inside the high and low voltage switchgear body (2). The circulation pump (32) is fixedly connected to the left side of the bottom inside the high and low voltage switchgear body (2). The right side of the circulation pump (32) is fixedly connected to the bottom left side of the high and low voltage switchgear body (2). The cooling pipe (33) is fixedly connected to the left side of the circulation pump (32). The placement plates (34) are installed inside the high and low voltage switchgear body (2).

2. The fire-retardant high-low voltage switchgear according to claim 1, characterized in that: The bottom of the left side of the cooling pipe (33) is fixedly connected to the left side of the bottom placement plate (34). The guide pipe (35) is fixedly connected to both sides of the placement plate (34). The return pipe (36) is fixedly connected to the right side of the top placement plate (34). The bottom of the return pipe (36) passes through the high and low voltage switch cabinet body (2) and the liquid storage tank (31) and is fixedly connected to the right side of the liquid storage tank (31). The ventilation hole (37) is opened on the rear side of the high and low voltage switch cabinet body (2).

3. The flame-retardant high and low voltage switchgear according to claim 1, characterized in that: The control mechanism (5) includes five temperature sensors (51), several semiconductor cooling plates (52), a PLC controller (53) and a ventilation fan (54), with the temperature sensors (51) fixedly connected to the bottom of the placement plate (34).

4. A flame-retardant high and low voltage switchgear according to claim 3, characterized in that: The semiconductor cooling plate (52) is fixedly connected to the inside of the liquid storage tank (31), and the PLC controller (53) is installed on the front side of the right cabinet door (4).

5. A flame-retardant high and low voltage switchgear according to claim 3, characterized in that: The ventilation fan (54) is installed inside the ventilation hole (37), and a dust filter (6) is fixedly connected to the inside of the ventilation hole (37).

6. A flame-retardant high and low voltage switchgear according to claim 1, characterized in that: The flame-retardant outer shell (1) has several exhaust vents (7) on its rear side, and a filter screen (8) is fixedly connected to the inner side of the exhaust vents (7).

7. A flame-retardant high and low voltage switchgear according to claim 1, characterized in that: A handle (9) is fixedly connected to the front side of the cabinet door (4), and the surface of the handle (9) is engraved with anti-slip texture.

8. A flame-retardant high and low voltage switchgear according to claim 1, characterized in that: A support column (10) is fixedly connected to the chamfer at the bottom of the flame-retardant shell (1), and the bottom of the support column (10) is engraved with anti-slip texture.

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