Switch cabinet applied to high-low voltage conversion

Abstract

The utility model discloses a switch cabinet applied to high and low voltage conversion, which belongs to the technical field of power equipment and comprises a cabinet body, and a mounting frame for mounting high and low voltage conversion equipment and a heat dissipation structure for dissipating heat of electronic components in the cabinet body are arranged in the cabinet body. The interior of the cabinet body is divided into a plurality of heat dissipation cavities through heat insulation plates, heat dissipation structures and independent heat dissipation air channels are arranged in the heat dissipation cavities, and air valves capable of adjusting the air volume are installed at air inlets of the heat dissipation cavities. The beneficial effects of the utility model are that the high-heat-production element and the low-heat-production element are separately placed through the heat insulation plate to respectively form independent heat dissipation areas, the heat generated by the electric appliance elements in the heat dissipation chamber is quickly transferred to the heat dissipation fins by using the high-efficiency heat conduction characteristic of the heat pipe, and the heat dissipation efficiency is greatly improved by matching with the fan and the air valve. Targeted heat dissipation is carried out according to the heat generated by different heat dissipation chambers, so that the heat dissipation effect is enhanced, and the heat dissipation uniformity of the cabinet body is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of power equipment, more particularly to a switch cabinet applied to high-low voltage conversion. BACKGROUND

[0002] The high-low voltage conversion cabinet is a combined high-low voltage switch cabinet assembled by standard module groups, which is suitable for power supply systems with rated working voltage of 660V and below, and is used for the control of power generation, power transmission, power distribution, power conversion and power consumption equipment.

[0003] In the switch cabinet for high-low voltage conversion, a large number of electrical components such as circuit breakers, contactors and relays are arranged inside. These electrical components will generate a large amount of heat during operation, causing the temperature inside the switch cabinet to rise.

[0004] The national invention patent with patent number 202111013884.0 discloses an indoor explosion-proof switch cabinet with automatic temperature regulation, which directly cools the heat of the circuit board through the radiator. The copper plate on the radiator is connected to the circuit board. The copper plate reduces the temperature of the circuit board through the heat pipe and the heat dissipation fin group, and continuously blows out the heat in the switch cabinet through the positive cooling fan. This solves the above problems, but this cooling method is to cool the entire cabinet body, which has the problem of poor uniformity of heat dissipation.

[0005] Because different electrical components generate different amounts of heat, some high-heat electrical components, such as high-power circuit breakers, may not be able to dissipate heat in time, causing these critical components to work in a high-temperature environment for a long time. Long-term operation not only accelerates the aging of electrical components and reduces their service life, but also may cause electrical faults such as short circuits, open circuits, and even fires in severe cases, posing a great safety hazard. UTILITY MODEL CONTENTS

[0006] To solve the above problems and overcome the shortcomings of the prior art, the utility model provides a switch cabinet applied to high-low voltage conversion.

[0007] The first technical problem solved is that the existing cooling method has poor uniformity of heat dissipation, and some high-heat electrical components cannot dissipate heat in time.

[0008] The specific technical solution of the utility model to solve the above technical problems is: the switch cabinet applied to high-low voltage conversion, comprising a cabinet body, a cabinet door hinged to the front side of the cabinet body, an installation rack for installing high-low voltage conversion equipment and a heat dissipation structure for dissipating heat from the electronic components inside the cabinet body arranged inside the cabinet body.

[0009] The interior of the cabinet is divided into multiple heat dissipation chambers by heat insulation plates, and each heat dissipation chamber is provided with a heat dissipation structure and an independent heat dissipation air duct, the heat dissipation structure comprises a heat pipe and heat dissipation fins, the heat dissipation air duct comprises an air inlet and an air outlet formed in the side wall of the cabinet, the air outlet is arranged on the side wall of the cabinet away from the air inlet, the air inlet is connected with a fan through an air pipe, and a wind valve capable of adjusting air volume is arranged at the air inlet of each heat dissipation chamber.

[0010] Further, the heat insulation plate is high-temperature-resistant.

[0011] Further, the interior of the cabinet is divided into an upper chamber and a lower chamber by the heat insulation plates.

[0012] Further, one end of the heat pipe is tightly attached to the surface of the electrical element in the heat dissipation chamber, and the other end extends to the heat dissipation fins, and the heat dissipation fins are fixedly installed on the outer side wall of the cabinet.

[0013] Further, the air pipe is connected with the air outlet end of the fan in the form of flange or welding, and the fan is fixedly arranged on the outer side wall of the cabinet close to the air inlet.

[0014] Further, the wind valve is connected with the air pipe and the cabinet through a sealing flange.

[0015] Further, the wind valve is a butterfly valve.

[0016] The beneficial effects of the utility model are:

[0017] An advantage of the utility model lies in that the heat dissipation structure for dissipating heat of the electronic elements in the cabinet is arranged, the heat dissipation structure comprises a heat pipe and heat dissipation fins, the heat pipe is used for quickly transferring heat generated by the electrical elements in the heat dissipation chamber to the heat dissipation fins by utilizing the high-efficiency heat conduction characteristic of the heat pipe, and the heat generated by the contactor is quickly conducted out by cooperating with the fan to improve the heat dissipation efficiency.

[0018] An advantage of the utility model lies in that the interior of the cabinet is divided into an upper chamber and a lower chamber according to the heat generation of the electrical elements by the heat insulation plates, the high-heat-generation elements and the low-heat-generation elements are separately arranged and form independent heat dissipation zones, the heat dissipation of the electrical elements with high heat generation cannot be timely, the low-heat-generation elements work in a high-temperature environment for a long time, the low-heat-generation elements are accelerated to age, the service life is reduced, and the heat damage of the low-heat-generation elements caused by the high temperature of the high-heat-generation elements is avoided.

[0019] An advantage of the utility model lies in providing the air inlet is equipped with the air valve of adjustable air volume, can according to the heat production of different radiator cavity electric component, adjust the air intake of radiator cavity, can according to the heat production of different radiator cavity and carry out the targeted heat dissipation, this not only can increase the utilization efficiency of fan, enhance the heat dissipation effect, also effectively improved the uniformity of cabinet heat dissipation. BRIEF DESCRIPTION OF DRAWINGS

[0020] BRIEF DESCRIPTION OF DRAWINGS Figure 1 It is the structure schematic diagram of the utility model;

[0021] BRIEF DESCRIPTION OF DRAWINGS Figure 2 It is the internal structure schematic diagram of the utility model cabinet;In the drawing:

[0022] 1, cabinet;11, cabinet door;12, mounting bracket;13, heat insulation plate;2, heat dissipation structure;21, heat pipe;22, heat dissipation fin;3, upper chamber;4, lower chamber;5, air inlet;6, air outlet;7, air pipe;8, fan;9, air valve. DETAILED DESCRIPTION

[0023] In the description of the utility model, it is understood that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "rear", "left lower", "right upper", "outer" and the like is based on the orientation or position relation shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the protection scope of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] The specific embodiment of the utility model: the switch cabinet for high-low voltage conversion, including cabinet 1, the front side of cabinet 1 is hinged with cabinet door 11, and cabinet 1 is internally provided with mounting bracket 12 for installing high-low voltage conversion equipment and heat dissipation structure 2 for dissipating heat of internal electronic elements of cabinet 1;

[0025] As an improvement point of the utility model

[0026] The cabinet 1 is divided into a plurality of independent heat dissipation chambers according to the heat production of electric elements by the heat insulation plate 13 in the cabinet 1, the heat insulation plate 13 uses high-temperature-resistant partition plates, such as galvanized steel plates or aluminum alloys, to isolate heat-producing elements from other areas to form independent heat dissipation areas and avoid the diffusion of hot air to the heat dissipation chambers. As a preferred embodiment, the cabinet 1 is divided into an upper chamber 3 and a lower chamber 4 by the heat insulation plate 13. As a preferred embodiment, the upper chamber 3 and the lower chamber 4 are respectively provided with cabinet doors 11.

[0027] The heat dissipation structure 2 is arranged in the heat dissipation chamber, and the independent heat dissipation air duct is arranged in the heat dissipation chamber, so that the disturbance between the multiple heat dissipation chambers can be avoided, and the heat dissipation efficiency is affected.

[0028] The heat dissipation air duct comprises an air inlet 5 and an air outlet 6 arranged on the side wall of the cabinet 1, the air outlet 6 is arranged on the side wall of the cabinet 1 away from the air inlet 5, the air inlet 5 is connected with a fan 8 through a wind pipe 7, the wind pipe 7 is connected with the air outlet end of the fan 8 in the form of flange or welding, the fan 8 is fixedly arranged on the outer side wall of the cabinet 1 close to the air inlet 5, and the air outlet end of the fan 8 is connected with the upper chamber 3 and the lower chamber 4 in communication through the wind pipe 7.

[0029] Preferably, the air inlet 5 is provided with an air valve 9 capable of adjusting the air volume, the air valve 9 is arranged on the outer side of the cabinet 1, one end of the air valve 9 is connected with the wind pipe 7 through a sealing flange, the other end of the air valve 9 is connected with the cabinet 1 through a sealing flange, the air valve 9 is a butterfly valve, the opening degree of the air valve 9 is adjusted by rotating the angle, so that the air volume entering the heat dissipation chamber can be controlled according to the heat production of the electric elements in different heat dissipation chambers.

[0030] It should be noted that the utility model is a switch cabinet applied to high-low voltage conversion,

[0031] (1) the staff classifies the electric elements according to the heat production of the electric elements in the high-low voltage conversion equipment, installs the high-heat production electric elements and the low-heat production electric elements on the mounting frame 12 in the upper chamber 3 and the lower chamber 4 respectively, generally, the heat resistance of the low-heat production electric element is lower than that of the high-heat production electric element, the high-heat production electric elements and the low-heat production electric elements are separately arranged, independent heat dissipation areas are formed, partial high-heat production electric elements cannot be heat dissipated in time, the low-heat production electric elements work in a high-temperature environment for a long time, the aging of the low-heat production electric elements is accelerated, the service life is reduced, and the heat damage of the low-heat production electric elements caused by the high temperature of the high-heat production electric elements is avoided,

[0032] Then the heat pipe 21 in the cabinet 1 is pasted on the surface of the electrical components through the heat conductive glue; when the high-low pressure conversion equipment operates and the heat dissipated is high, the temperature inside the cabinet 1 is increased, at this time the heat pipe 21 transfers the heat generated by the electrical components in the heat dissipation chamber to the heat dissipation fins 22, and the heat dissipation fins 22 dissipate heat;

[0033] (2) Start the fan 8, since the upper chamber 3 and the lower chamber 4 are divided by the heat insulation plate 13, two independent heat dissipation chambers are formed, the cold air blown by the fan 8 enters the upper chamber 3 and the lower chamber 4 from the air inlet 5 through the air pipe 7 respectively, and is discharged from the air outlet 6 of the upper chamber 3 and the lower chamber 4 respectively, forming a convection to dissipate heat, the fan 8 cooperates with the heat dissipation structure 2, and the heat generated by the electrical components can be quickly led out, and the heat dissipation efficiency is improved.

[0034] (3) According to the heat generated by different electrical components in the upper chamber 3 and the lower chamber 4, the opening degree of the air valve 9 of the upper chamber 3 and the lower chamber 4 is artificially controlled, the air valve 9 of the heat dissipation chamber in which the high-heat electrical components are placed can be adjusted to a larger opening degree, so that more cold air enters the corresponding heat dissipation chamber, and the heat dissipation effect is enhanced; the air valve 9 of the heat dissipation chamber in which the low-heat electrical components are placed can be adjusted to a smaller opening degree, so that the heat dissipation demand is met; through the independent heat dissipation area and the adjustment of the opening degree of the air valve 9, the heat generated by different heat dissipation chambers can be targetedly dissipated, so that the utilization efficiency of the fan 8 is increased, the heat dissipation effect is enhanced, and the uniformity of the heat dissipation of the cabinet 1 is effectively improved.

[0035] The basic principle and main features of the utility model and the advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A switch cabinet applied to high-low voltage conversion, comprising a cabinet body (1), a cabinet door (11) is hinged to the front side of the cabinet body (1), and a mounting rack (12) for mounting high-low voltage conversion equipment and a heat dissipation structure (2) for dissipating heat of electronic elements inside the cabinet body (1) are arranged inside the cabinet body (1); characterized in that: the inside of the cabinet body (1) is divided into a plurality of heat dissipation chambers by a heat insulation plate (13), and the heat dissipation chambers are each provided with a heat dissipation structure (2) and an independent heat dissipation air duct, the heat dissipation structure (2) comprises a heat pipe (21) and a heat dissipation fin (22), the heat dissipation air duct comprises an air inlet (5) and an air outlet (6) formed in the side wall of the cabinet body (1), the air outlet (6) is arranged on the side wall of the cabinet body (1) away from the air inlet (5), the air inlet (5) is connected with a fan (8) through an air pipe (7), and the air inlets (5) of the plurality of heat dissipation chambers are each provided with a wind valve (9) capable of adjusting air volume.

2. A switchgear applied to high-low voltage conversion according to claim 1, characterized in that The heat insulation plate (13) is made of a high-temperature-resistant partition plate.

3. The switchgear applied to high-low voltage conversion according to claim 2, characterized in that The inside of the cabinet body (1) is divided into an upper chamber (3) and a lower chamber (4) by the heat insulation plate (13).

4. The switchgear applied to high-low voltage conversion according to claim 1, characterized in that One end of the heat pipe (21) is closely attached to the surface of an electrical element in the heat dissipation chamber, and the other end extends to the heat dissipation fin (22), and the heat dissipation fin (22) is fixedly installed on the outer side wall of the cabinet body (1).

5. The switchgear for high-low voltage conversion according to claim 1, characterized in that The air pipe (7) is connected with the air outlet end of the fan (8) in the form of flange or welding, and the fan (8) is fixedly arranged on the outer side wall of the cabinet body (1) close to the air inlet (5).

6. The switchgear for high-low voltage conversion according to claim 1, characterized in that The wind valve (9) is connected with the air pipe (7) and the cabinet body (1) through a sealing flange.

7. The switchgear for high-low voltage conversion according to claim 6, characterized in that The wind valve (9) is a butterfly valve.

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