Large-current medium-voltage switch cabinet structure with multiple air channels for heat dissipation

Abstract

The high-current medium-voltage switch cabinet structure is characterized in that an air cavity is arranged at the bottom of a circuit breaker cavity, a high-speed axial flow fan is arranged on the surface of the outer side of the air cavity, a ventilating duct is arranged on the inner side of the air cavity, and the high-speed axial flow fan at the inner end of the air cavity is communicated with a circuit cavity through the ventilating duct and an air cavity filter plate; the inner side of the circuit cavity is communicated with the bus cavity through a circuit cavity filter plate, the top surface of the bus cavity is provided with a bus exhaust fan, and an independent air cavity is arranged on the inner side of the electrical cabinet, so that a heat dissipation air cavity with enough flow velocity is obtained, and the efficient cooling of a large-area cavity is realized; and the circuit breaker cavity with low cooling requirement is independently isolated, so that air channels in the bus cavity and the circuit cavity are concentrated, the heat dissipation efficiency is improved, high-temperature air is intensively and efficiently discharged, auxiliary air intake is carried out in the large-area circuit cavity, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] This article belongs to the technical field of electric cabinet air ducts, and specifically relates to a high-current medium-voltage switch cabinet structure with multiple air ducts for heat dissipation. Background Art

[0002] High-current electrical cabinets are devices that open and close, control and protect electricity during the process of power generation, transmission, distribution and energy conversion in the power system. They are suitable for power plants, substations, petrochemicals, metallurgy and steel rolling, light industry and textiles, factories and mines, residential areas, hospitals, schools and other occasions.

[0003] Existing high-current electrical cabinets will rapidly accumulate heat inside the cabinet during high-current operation. Therefore, most of these electrical cabinets use high-speed fans to blow air inward and exhaust air outward, so that external cold air can quickly enter and the accumulated heat inside can be discharged at a high speed to achieve a cooling effect.

[0004] However, the ordinary fan blowing method not only has slow heat dissipation and low efficiency, but also due to the complex internal space of the box and multiple chambers separated by different functions, it is impossible to form a stable air duct, which causes the air to turbulent inside, resulting in a further decrease in the cooling effect. The air duct heat dissipation also makes it very easy for dust in the air to accumulate inside the cabinet, making it very easy for dust to accumulate inside, thereby further reducing the heat dissipation effect. However, if only a filtering fan is used for air supply, the air volume and flow rate of this fan will be sharply reduced due to the effect of the filter. Utility Model Content

[0005] In order to solve the above problems, this paper proposes a high-current medium-voltage switchgear structure with multi-air duct heat dissipation, wherein the cabinet body includes a circuit cavity, a circuit breaker cavity and a busbar cavity, a busbar cavity is provided above the inner part of the circuit cavity, a circuit breaker cavity is provided on the side of the busbar cavity, a wind cavity is provided at the bottom of the circuit breaker cavity, a high-speed axial flow fan is provided on the outer surface of the wind cavity, a ventilation duct is provided on the inner side of the wind cavity, a filtering axial flow fan is provided on the outer side of the top surface of the wind cavity, the high-speed axial flow fan at the inner end of the wind cavity is connected with the circuit cavity through the ventilation duct and the wind cavity filter plate, a filtering axial flow fan is provided on the outer surface of the circuit cavity, the inner side of the circuit cavity is connected with the busbar cavity through the circuit cavity filter plate, a straight-through heat dissipation top is provided on the top surface of the circuit cavity, a busbar exhaust fan is provided on the top surface of the busbar cavity, a circuit breaker exhaust fan is provided on the top surface of the circuit breaker cavity, and the bottom surface of the circuit breaker cavity It is interconnected with the filtered axial flow fan on the outside of the top surface of the wind cavity. An independent wind cavity is set on the inner side of the electrical cabinet so that external air can be input into the wind cavity at a high speed, thereby obtaining a heat dissipation wind cavity with sufficient flow rate, and the air in the wind cavity is introduced into the inside of a large-area circuit cavity through the ventilation duct, so as to achieve efficient cooling of the large-area chamber, and the circuit breaker cavity with the lowest cooling demand is also separately isolated, so as to ensure that the wind ducts in the busbar cavity and the circuit cavity are concentrated, and the heat dissipation efficiency is improved, and the wind duct outlets of the circuit breaker cavity, the busbar cavity and the circuit cavity are all provided with top ends, so as to ensure that the high-temperature air is discharged in a concentrated and efficient manner, and then the output is assisted by the filtered axial flow fan, which not only assists in delivering low-temperature air into the circuit breaker cavity, but also can assist in the air intake in the large-area circuit cavity, thereby improving the heat dissipation efficiency.

[0006] The cabinet is a split-type splicing cabinet, which is composed of a circuit cavity, a circuit breaker cavity, a busbar cavity and an air cavity. A filter axial flow fan is provided on the outer side of the top surface of the air cavity, a circuit cavity is provided on the inner surface of the air cavity, a circuit breaker cavity is provided above the filter axial flow fan, a busbar cavity is provided on the outer end of the inner surface of the circuit breaker cavity, an assembly port is provided on the outer surface of the air cavity and the circuit cavity, and an assembly port is provided on the top of the circuit cavity, the circuit breaker cavity and the busbar cavity. By splicing and combining the various chambers of the cabinet of the electrical cabinet, it is convenient to set a filter plate between the various chambers, thereby realizing the planned transmission of the air duct, and also ensuring the dustproof effect inside the chamber. Prevent dust accumulation inside the chamber.

[0007] The high-speed axial flow fan is an air intake type exhaust fan. The high-speed axial flow fan is embedded in the side panel of the air cavity. The air inlet of the high-speed axial flow fan is arranged on the outside of the air cavity, and the air outlet of the high-speed axial flow fan is arranged in the ventilation duct inside the air cavity. The air inlet end of the high-speed axial flow fan is provided with a dust-proof shutter. The high-speed axial flow fan can provide a continuous and high-speed low-temperature air inside the air cavity, thereby ensuring that the circuit cavity and bus cavity with the largest volume inside the electrical cabinet have low-temperature air with sufficient flow rate and flow for cooling.

[0008] The filtering axial flow fan is a filtering air inlet type exhaust fan, and the filtering axial flow fan is respectively arranged on the side panel of the circuit cavity and the outer side of the bottom surface of the circuit breaker cavity, the air inlet of the filtering axial flow fan of the circuit cavity is arranged on the outer side of the circuit cavity, the air outlet of the filtering axial flow fan of the circuit cavity is arranged on the inner side of the circuit cavity, the air inlet of the filtering axial flow fan of the circuit breaker cavity is arranged on the outer side of the circuit breaker cavity, the air outlet of the filtering axial flow fan of the circuit breaker cavity is connected with the circuit breaker cavity, and the air inlet end of the filtering axial flow fan is provided with a dustproof net. Through the filtering axial flow fan, not only can independent filtering and heat dissipation be achieved for the interior of the circuit breaker cavity with low temperature requirements, but also auxiliary air intake can be performed on the outside of the circuit cavity to ensure sufficient air volume for large space chambers such as the circuit cavity.

[0009] The straight-through heat dissipation roof is arranged on the outside of the top of the circuit cavity. The shape of the straight-through heat dissipation roof is an M-shaped hollow shielding heat dissipation ceiling. The inner side of the straight-through heat dissipation roof is interconnected with the inner side of the circuit cavity. The high-temperature air in the circuit cavity is directly discharged through the straight-through heat dissipation roof, and more low-temperature air can be actively sucked into the busbar cavity by the busbar exhaust fan, thereby improving the cooling efficiency. The heat dissipation roof can also improve the heat dissipation efficiency of hot air, and it will not stay at the upper end of the electrical cabinet to generate heat accumulation.

[0010] The circuit breaker exhaust fan is an exhaust type external transmission fan, the circuit breaker exhaust fan is embedded in the top of the circuit breaker cavity, the air inlet of the circuit breaker exhaust fan is located on the inner side of the circuit breaker cavity, the air outlet of the circuit breaker exhaust fan is located on the outer side of the circuit breaker cavity, and a dust-proof shutter is arranged on the outer side of the air outlet of the circuit breaker exhaust fan. The busbar exhaust fan is an exhaust type external transmission fan, the busbar exhaust fan is embedded in the top of the busbar cavity, the air inlet of the busbar exhaust fan is located on the inner side of the busbar cavity, the air outlet of the busbar exhaust fan is located on the outer side of the busbar cavity, and a dust-proof shutter is arranged on the outer side of the air outlet of the busbar exhaust fan. The circuit breaker exhaust fan and the busbar exhaust fan can quickly discharge the high-temperature air inside the circuit breaker cavity and the busbar cavity, and can also auxiliaryly suck the low-temperature air into the circuit breaker cavity and the busbar cavity, thereby further improving the heat dissipation connection.

[0011] The air cavity filter plate and the circuit cavity filter plate are both IP2X-level dust-proof ventilation partitions. By setting filter plates between the air cavity, circuit cavity and bus cavity, dust impurities in the low-temperature air will not enter other chambers, preventing dust accumulation.

[0012] Beneficial effects:

[0013] An independent wind cavity is provided on the inner side of the electrical cabinet so that the external air can be input into the wind cavity at a high speed, thereby obtaining a heat dissipation wind cavity with a sufficient flow rate, and the air in the wind cavity is introduced into the circuit cavity of a large area through the ventilation duct, so as to achieve efficient cooling of the large area of ​​the chamber, and the circuit breaker cavity with the lowest cooling demand is also separately isolated, so as to ensure that the wind ducts in the busbar cavity and the circuit cavity are concentrated, and the heat dissipation efficiency is improved, and the wind duct outlets of the circuit breaker cavity, the busbar cavity and the circuit cavity are all provided with top ends, so as to ensure that the high-temperature air is discharged in a concentrated and efficient manner, and then the output is assisted by a filtering axial flow fan, which not only assists in delivering the low-temperature air into the circuit breaker cavity, but also can assist in the air intake in the circuit cavity of a large area, thereby improving the heat dissipation efficiency.

[0014] By splicing and combining the chambers of the cabinet body of the electrical cabinet, it is convenient to set filter plates between the chambers, so as to achieve planned transmission of the air duct and ensure the dust-proof effect inside the chamber. Prevent dust accumulation inside the chamber.

[0015] A high-speed axial flow fan is used to provide a continuous supply of high-velocity low-temperature air inside the air cavity, thereby ensuring that the circuit cavity and busbar cavity with the largest volume inside the electrical cabinet have low-temperature air with sufficient flow rate and flow for cooling.

[0016] The filtering axial flow fan can not only realize independent filtering and heat dissipation inside the circuit breaker chamber which has low temperature requirements, but also provide auxiliary air intake to the air cavity outside the circuit cavity, thus ensuring sufficient air volume in large space chambers such as the circuit cavity.

[0017] The high-temperature air in the circuit cavity can be directly discharged through the straight-through heat dissipation top, which can also ensure that more low-temperature air can be actively sucked into the busbar cavity by the busbar exhaust fan, thereby improving the cooling efficiency. The heat dissipation top can also improve the heat dissipation efficiency of hot air, and it will not stay at the upper end of the electrical cabinet to generate heat accumulation.

[0018] The circuit breaker exhaust fan and the busbar exhaust fan can quickly exhaust the high-temperature air inside the circuit breaker cavity and the busbar cavity, and can also auxiliaryly suck low-temperature air into the circuit breaker cavity and the busbar cavity, thereby further improving the heat dissipation connection.

[0019] By arranging filter plates between the wind cavity, the circuit cavity and the busbar cavity, dust and impurities in the low-temperature air will not enter other cavities, thus preventing dust accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the air duct of a high-current medium-voltage switchgear structure with multiple air ducts for heat dissipation;

[0021] In the figure; 1, air cavity, 2, circuit cavity, 3, circuit breaker cavity, 4, busbar cavity, 5, high-speed axial flow fan, 6, filtering axial flow fan, 7, circuit breaker exhaust fan, 8, busbar exhaust fan, 9, straight-through heat dissipation top, 10, air cavity filter plate, 11, circuit cavity filter plate. DETAILED DESCRIPTION

[0022] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0023] Wind cavity 1, circuit cavity 2, circuit breaker cavity 3, busbar cavity 4, high-speed axial flow fan 5, filtered crossflow fan 6, circuit breaker exhaust fan 7, busbar exhaust fan 8, straight-through heat dissipation top 9, wind cavity filter plate 10, circuit cavity filter plate 11.

[0024] like Figure 1 As shown;

[0025] A high-current medium-voltage switch cabinet structure with multi-air duct heat dissipation, the cabinet body includes a circuit cavity 2, a circuit breaker cavity 3 and a busbar cavity 4, the busbar cavity 4 is provided above the inside of the circuit cavity 2, and the circuit breaker cavity 3 is provided on the side of the busbar cavity 4, characterized in that a wind cavity 1 is provided at the bottom of the circuit breaker cavity 3, a high-speed axial flow fan 5 is provided on the outer surface of the wind cavity 1, a ventilation duct is provided on the inner side of the wind cavity 1, a filtering cross-flow fan 6 is provided on the outer side of the top surface of the wind cavity 1, the high-speed axial flow fan 5 at the inner end of the wind cavity 1 is communicated with the circuit cavity 2 through the ventilation duct and the wind cavity filter plate 10, a filtering axial flow fan is provided on the outer surface of the circuit cavity 2, the inner side of the circuit cavity 2 is communicated with the busbar cavity 4 through the circuit cavity filter plate 11, the top surface of the circuit cavity 2 is provided with a straight-through heat dissipation top 9, the The top surface of the busbar cavity 4 is provided with a busbar exhaust fan 8, the top surface of the circuit breaker cavity 3 is provided with a circuit breaker exhaust fan 7, the bottom surface of the circuit breaker cavity 3 is connected to the filter crossflow fan 6 on the outside of the top surface of the wind cavity 1, the cabinet is a split splicing cabinet, and the cabinet is composed of a circuit cavity 2, a circuit breaker cavity 3, a busbar cavity 4 and a wind cavity 1. The outside of the top surface of the wind cavity 1 is provided with a filter crossflow fan 6, the inner surface of the wind cavity 1 is provided with a circuit cavity 2, the upper part of the filter crossflow fan 6 is provided with a circuit breaker cavity 3, and the outer end of the inner surface of the circuit breaker cavity 3 is provided with a busbar cavity 4, the outer surfaces of the wind cavity 1 and the circuit cavity 2 are provided with assembly ports, and the tops of the circuit cavity 2, the circuit breaker cavity 3 and the busbar cavity 4 are provided with assembly ports, and the high-speed axial flow fan 5 is for entering The high-speed axial flow fan 5 is embedded in the side panel of the wind cavity 1, the air inlet of the high-speed axial flow fan 5 is arranged on the outside of the wind cavity 1, and the air outlet of the high-speed axial flow fan 5 is arranged in the ventilation duct inside the wind cavity 1. The air inlet end of the high-speed axial flow fan 5 is provided with a dust-proof shutter. The filtering crossflow fan 6 is a filtering air inlet type exhaust fan. The filtering crossflow fan 6 is respectively arranged on the side panel of the circuit cavity 2 and the outside of the bottom surface of the circuit breaker cavity 3. The air inlet of the filtering crossflow fan 6 of the circuit cavity 2 is arranged on the outside of the circuit cavity 2, and the air outlet of the filtering crossflow fan 6 of the circuit cavity 2 is arranged on the inside of the circuit cavity 2. The air inlet of the filtering crossflow fan 6 of the circuit breaker cavity 3 is arranged on the outside of the circuit breaker cavity 3, and the air outlet of the filtering crossflow fan 6 of the circuit breaker cavity 3 is close to the circuit breaker cavity 3. The cavities 3 are interconnected, and the air inlet ends of the filtering crossflow fans 6 are provided with dustproof nets. The straight heat dissipation top 9 is arranged on the outside of the top of the circuit cavity 2. The straight heat dissipation top 9 is in the shape of an M-shaped hollow heat-shielding ceiling. The inner side of the straight heat dissipation top 9 is interconnected with the inner side of the circuit cavity 2. The circuit breaker exhaust fan 7 is an exhaust-type external transmission fan. The circuit breaker exhaust fan 7 is embedded in the top of the circuit breaker cavity 3. The air inlet of the circuit breaker exhaust fan 7 is arranged on the inner side of the circuit breaker cavity 3. The air outlet of the circuit breaker exhaust fan 7 is arranged on the outside of the circuit breaker cavity 3. Dust-proof shutters are provided on the outside of the air outlet of the circuit breaker exhaust fan 7. The busbar exhaust fan 8 is an exhaust-type external transmission fan. The busbar exhaust fan 8 is embedded in the top of the busbar cavity 4. The air inlet of the busbar exhaust fan 8 is arranged on the inner side of the busbar cavity 4.The air outlet of the bus exhaust fan 8 is arranged outside the bus cavity 4, and a dustproof shutter is arranged outside the air outlet of the bus exhaust fan 8. The air cavity filter plate 10 and the circuit cavity filter plate 11 are both IP2X dustproof ventilation partitions.

[0026] Implementation examples;

[0027] During use, the high-speed axial flow fan 5, the filter crossflow fan 6, the circuit breaker exhaust fan 7 and the bus exhaust fan 8 are all started at the same time, and the high-speed axial flow fan 5 inputs the external low-temperature air into the air cavity 1 at a high speed;

[0028] The inside of the circuit breaker cavity 3 is independently cooled by the filter crossflow fan 6 at the bottom of the circuit breaker cavity 3, and is exhausted by the circuit breaker exhaust fan 7 at the same time;

[0029] Inside the wind cavity 1, a high-speed axial flow fan is used to draw low-temperature air through the ventilation duct and the wind cavity filter plate 10 into the circuit cavity 2, wherein the filtered cross-flow fan 6 outside the circuit cavity 2 can assist in inputting the low-temperature air from the outside into the circuit cavity 2, while dissipating the heat in the circuit cavity 2. At the same time, most of the air that is still at a low temperature is actively sucked into the busbar cavity by the bus exhaust fan 8 through the circuit breaker cavity filter plate 12 to cool the busbar cavity 4, while the excess hot air in the circuit cavity 2 is directly discharged from the direct heat dissipation top 9.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-current medium-voltage switchgear structure with multi-duct heat dissipation, the cabinet body includes a circuit cavity, a circuit breaker cavity and a busbar cavity, the upper part of the circuit cavity is provided with a busbar cavity, and the side of the busbar cavity is provided with a circuit breaker cavity, characterized in that: A wind cavity is provided at the bottom of the circuit breaker cavity, a high-speed axial flow fan is provided on the outer surface of the wind cavity, a ventilation duct is provided on the inner side of the wind cavity, a filtering axial flow fan is provided on the outer side of the top surface of the wind cavity, the high-speed axial flow fan at the inner end of the wind cavity is communicated with the circuit cavity through the ventilation duct and the wind cavity filter plate, a filtering axial flow fan is provided on the outer surface of the circuit cavity, the inner side of the circuit cavity is communicated with the busbar cavity through the circuit cavity filter plate, a straight-through heat dissipation top is provided on the top surface of the circuit cavity, a busbar exhaust fan is provided on the top surface of the busbar cavity, a circuit breaker exhaust fan is provided on the top surface of the circuit breaker cavity, and the bottom surface of the circuit breaker cavity is communicated with the filtering axial flow fan on the outer side of the wind cavity top surface.

2. A multi-duct heat dissipation high-current medium-voltage switch cabinet structure according to claim 1, characterized in that: The cabinet is a split-type spliced ​​cabinet, which is composed of a circuit cavity, a circuit breaker cavity, a busbar cavity and an air cavity. A filtering axial flow fan is provided on the outer side of the top surface of the air cavity, and a circuit cavity is provided on the inner surface of the air cavity. A circuit breaker cavity is provided above the filtering axial flow fan, and a busbar cavity is provided at the outer end of the inner surface of the circuit breaker cavity. Assembly openings are provided on the outer surfaces of the air cavity and the circuit cavity, and assembly openings are provided on the tops of the circuit cavity, the circuit breaker cavity and the busbar cavity.

3. A high-current medium-voltage switch cabinet structure with multi-duct heat dissipation according to claim 1, characterized in that: The high-speed axial flow fan is an air intake type exhaust fan. The high-speed axial flow fan is embedded in the side panel of the air cavity. The air inlet of the high-speed axial flow fan is arranged on the outside of the air cavity. The air outlet of the high-speed axial flow fan is arranged in the ventilation duct inside the air cavity. A dust-proof shutter is provided at the end of the air inlet of the high-speed axial flow fan.

4. A high-current medium-voltage switch cabinet structure with multi-duct heat dissipation according to claim 1, characterized in that: The filtering axial flow fan is a filtering air inlet type exhaust fan, and the filtering axial flow fan is respectively arranged on the side panel of the circuit cavity and the outer side of the bottom surface of the circuit breaker cavity, the air inlet of the filtering axial flow fan of the circuit cavity is arranged on the outer side of the circuit cavity, the air outlet of the filtering axial flow fan of the circuit cavity is arranged on the inner side of the circuit cavity, the air inlet of the filtering axial flow fan of the circuit breaker cavity is arranged on the outer side of the circuit breaker cavity, the air outlet of the filtering axial flow fan of the circuit breaker cavity is communicated with the circuit breaker cavity, and the air inlet end of the filtering axial flow fan is provided with a dustproof net.

5. The multi-duct heat dissipation high-current medium-voltage switch cabinet structure according to claim 1 is characterized in that: The straight-through heat dissipation top is arranged outside the top of the circuit cavity. The shape of the straight-through heat dissipation top is an M-shaped hollow heat-shielding ceiling. The inner side of the straight-through heat dissipation top is interconnected with the inner side of the circuit cavity.

6. A high-current medium-voltage switch cabinet structure with multi-duct heat dissipation according to claim 1, characterized in that: The circuit breaker exhaust fan is an exhaust type external transmission fan. The circuit breaker exhaust fan is embedded in the top of the circuit breaker cavity. The air inlet of the circuit breaker exhaust fan is arranged on the inner side of the circuit breaker cavity. The air outlet of the circuit breaker exhaust fan is arranged on the outer side of the circuit breaker cavity. A dustproof shutter is arranged on the outer side of the air outlet of the circuit breaker exhaust fan.

7. A high-current medium-voltage switch cabinet structure with multi-duct heat dissipation according to claim 1, characterized in that: The busbar exhaust fan is an exhaust type external transmission fan. The busbar exhaust fan is embedded in the top of the busbar cavity. The air inlet of the busbar exhaust fan is arranged on the inner side of the busbar cavity. The air outlet of the busbar exhaust fan is arranged on the outer side of the busbar cavity. A dustproof shutter is arranged on the outer side of the air outlet of the busbar exhaust fan.

8. The multi-duct heat dissipation high-current medium-voltage switch cabinet structure according to claim 1 is characterized in that: The air cavity filter plate and the circuit cavity filter plate are both IP2X-level dust-proof ventilation partitions.

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