CN214755045U

CN214755045U - Mining low-voltage switchgear

Info

Publication number: CN214755045U
Application number: CN202120748225.0U
Authority: CN
Inventors: 王建和
Original assignee: Ningbo Groli Electric Technology Co ltd
Current assignee: Ningbo Groli Electric Technology Co ltd
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-11-16
Anticipated expiration: 2031-04-13

Abstract

The utility model discloses a mining low-voltage switchgear, including the cubical switchboard body, still include the cold source, the heat transfer room, the cooling tube, swing arm and air-blower, be equipped with the polylith division board in the heat transfer room, be equipped with the breach between division board and the heat transfer room lateral wall, the heat transfer room passes through the division board and forms airflow channel, the cold source sets up in airflow channel, air-blower export is connected with the heat transfer chamber, airflow channel exports and is connected with the cooling tube, the cooling tube is connected with the swing arm, the swing arm sets up in the cubical switchboard body, the swing arm is equipped with cavity and a plurality of airflow hole that communicates with the cavity, airflow hole sets up towards the side, the swing arm rotates with the airflow tube end and is connected and cavity and airflow tube intercommunication. In this scheme, air blows in the heat exchange chamber through the air-blower, forms cold wind under the cold source effect, and cold wind passes through the rotary rod that cooling tube got into in the cubical switchboard body, and the rotary rod rotates under the air current reaction force, distributes cold wind to the cubical switchboard body everywhere uniformly, and the heat dissipation is even, avoids heat to concentrate a certain department, does not keep the dead angle.

Description

Mining low-voltage switchgear

Technical Field

The utility model belongs to the technical field of electrical equipment and specifically relates to a mining low-voltage switchgear is related to.

Background

The low-voltage switch cabinet is used for converting, distributing and controlling electric energy of power, lighting and distribution equipment in a power distribution system with 50Hz alternating current, 380V rated working voltage and 3150A rated current. The mining pressing switch cabinet in the prior art is usually provided with ventilation holes for heat dissipation above and below, but the ventilation holes are smaller for avoiding dust entering, the heat exchange efficiency of natural ventilation cooling in equipment is low, the cooling effect is poor, and the heat dissipation uniformity is poor. For example, a mining high-low voltage switch cabinet disclosed in the Chinese patent literature, which is disclosed under the publication No. CN212343069U, comprises a switch cabinet main body, wherein an exhaust fan is fixedly installed at the bottom of the inner wall of the switch cabinet main body, an air inlet of the exhaust fan is fixedly communicated with a separation groove, a dust filtering storage box is clamped inside the separation groove, suction pipes are fixedly arranged at both sides of the inner wall of the switch cabinet main body, a wavy heat absorbing plate is fixedly arranged at the middle part of one end of the inner wall of the switch cabinet main body, and cleaning rollers are rotatably connected at both sides of the wavy heat absorbing plate, the mining high-low voltage switch cabinet has excellent ventilation and heat dissipation capabilities, can timely clean dust inside the switch cabinet, centralizedly collect and store the dust after collection, and can avoid the influence on the performance of the switch cabinet due to more dust when in mining, and can effectively buffer the impact energy of stone and ore impacting the switch cabinet, the protection cubical switchboard does not receive the damage, still possesses the function of illumination, has higher practicality in mining. However, the scheme has uneven heat dissipation and poor effect, and is easy to burn equipment due to overhigh internal temperature of the switch equipment, so that the service life of the device is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an overcome the foretell problem of prior art, provide a mining low-voltage switchgear. The mining low-voltage switch cabinet has good heat dissipation effect.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a mining low-voltage switchgear, including the cubical switchboard body, still include the cold source, the heat transfer room, the cooling tube, swing arm and air-blower, be equipped with the polylith division board in the heat transfer room, be equipped with the breach between division board and the heat transfer room lateral wall, the heat transfer room passes through the division board and forms airflow channel, the cold source sets up in airflow channel, the air-blower export is connected with the heat transfer chamber, airflow channel export is connected with the cooling tube, the cooling tube is connected with the swing arm, the swing arm sets up in the cubical switchboard body, the swing arm is equipped with cavity and a plurality of air current hole that communicate with the cavity, air current hole sets up towards the side, the swing arm rotates with air current pipe end and is connected and cavity and air current pipe intercommunication. Air blows in the heat transfer room through the air-blower in this scheme, forms cold wind under the cold source effect, and cold wind passes through the rotary rod in the cooling tube entering cubical switchboard body, and the air current flows from the air current hole of rotary rod side, and the rotary rod rotates under the air current reaction force, distributes cold wind to the cubical switchboard body everywhere uniformly, and the heat dissipation is even, and it is effectual to cool down, avoids heat to concentrate a certain department, does not keep the dead angle.

Preferably, the cooling pipe comprises a main pipe and a plurality of sub-cooling pipes, the main pipe is connected with the outlet of the airflow channel, the plurality of sub-cooling pipes are respectively connected with the main pipe, and the plurality of sub-cooling pipes are respectively connected with a rotary rod at the tail ends of the sub-cooling pipes in a rotating mode. The uniformity of heat dissipation is increased.

Preferably, the distance between adjacent airflow holes is gradually increased in the direction away from the end of the cooling pipe. Because the instrument in the middle of the switch cabinet body is concentrated, the heat quantity is high, and airflow is easily accumulated at the tail end of the rotary rod, the heat dissipation effect can be improved by the arrangement of more airflow holes close to the cooling pipe.

Preferably, the cold source is a semiconductor refrigeration piece, and the cold end of the semiconductor refrigeration piece is arranged in the heat exchange chamber. The semiconductor refrigerating sheet has a simple structure and is easy to apply.

Preferably, the heat exchanger also comprises a filtering device, and the filtering device is arranged in the cooling pipe or between the blower and the heat exchange chamber. Prevent dust from entering the switch cabinet body.

Preferably, the dryer is arranged in the cooling pipe or between the blower and the heat exchange chamber. The influence of the extreme humidity working condition on the normal operation of the equipment is avoided.

As the preferred, the lateral wall setting of the perpendicular heat transfer room of polylith division board interval, adjacent breach reverse arrangement, the breach area is less than the division board area, and airflow channel is the s shape. The flowing time of the air flow in the heat exchange chamber is increased, and the cooling effect on the air is improved.

As the preferred, the relative heat transfer chamber's of polylith division board lateral wall slope sets up, and the division board end deviates from the air current flow direction, and adjacent breach reverse arrangement, breach area are less than the division board area. The flow speed of the air in the heat exchange chamber is slowed down, and the cooling effect on the air is improved.

Therefore, the utility model discloses following beneficial effect has: (1) the uniform heat dissipation can be realized without a fan, and the cooling effect is good; (2) dust inhalation is avoided.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural diagram of the heat exchange chamber of the present invention.

In the figure: 1. the device comprises a switch cabinet body 2, a semiconductor refrigerating sheet 3, an air blower 4, a filtering device 5, a dryer 6, a cooling pipe 6-1, a main pipe 6-2, a sub-cooling pipe 7, a rotary rod 8, a heat exchange chamber 9 and a partition plate.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description. It should be noted that as used in the foregoing description, the terms "front," "back," "left," "right," "upper" and "lower" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Example (b):

in the embodiment shown in fig. 1 and fig. 2, a mining low-voltage switch cabinet, including switch cabinet body 1, still include the cold source, heat transfer chamber 8, cooling tube 6, swing arm 7 and air-blower 3, be equipped with polylith division board 9 in the heat transfer chamber, it has the breach to reserve between division board and the heat transfer chamber lateral wall, the lateral wall slope setting of the relative heat transfer chamber of polylith division board, the division board end deviates from the air current flow direction, adjacent breach reverse arrangement, the breach area is less than the division board area, the heat transfer chamber passes through the division board and forms airflow channel, the structure of this embodiment can slow down the velocity of flow of air in the heat transfer chamber, promote the cooling effect to the air, the polylith division board also can perpendicular heat transfer chamber's lateral wall setting. The cold source is semiconductor refrigeration piece 2 in this embodiment, and the cold junction setting of semiconductor refrigeration piece is at the heat transfer roof portion, and semiconductor refrigeration piece simple structure easily uses. The air blower outlet is connected with the heat exchange chamber, a filtering device 4 and a dryer 5 are arranged between the air blower outlet and the heat exchange chamber, the cooling pipes comprise a main pipe 6-1 and a plurality of sub cooling pipes 6-2, the main pipe is connected with the airflow channel outlet, the sub cooling pipes are respectively connected with the main pipe, the sub cooling pipes are respectively connected with a rotary rod 7 in a rotating mode at the tail ends of the sub cooling pipes, the rotary rod is provided with a cavity and a plurality of airflow holes communicated with the cavity, the airflow holes are arranged towards the side face, the rotary rod is connected with the airflow pipe in a rotating mode at the tail ends of the airflow pipes, the cavity is communicated with the airflow pipes, and the distance between every two adjacent airflow holes is gradually increased along the direction far away from the tail ends of the cooling pipes. Because the instrument in the middle of the switch cabinet body is concentrated, the heat quantity is high, and airflow is easily accumulated at the tail end of the rotary rod, the heat dissipation effect can be improved by the arrangement of more airflow holes close to the cooling pipe.

Air blows in the heat transfer room through the air-blower in this scheme, forms cold wind under the cold source effect, and cold wind passes through the rotary rod in the cooling tube entering cubical switchboard body, and the air current flows from the air current hole of rotary rod side, and the rotary rod rotates under the air current reaction force, distributes cold wind to the cubical switchboard body everywhere uniformly, and the heat dissipation is even, and it is effectual to cool down, avoids heat to concentrate a certain department, does not keep the dead angle.

Therefore, the utility model can realize uniform heat dissipation without a fan and has good cooling effect; dust inhalation is avoided.

It will be appreciated by those of ordinary skill in the art that the examples described herein are intended to assist the reader in understanding the manner of practicing the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and examples. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.

Claims

1. The utility model provides a mining low-voltage switchgear, including the cubical switchboard body, characterized by, still include the cold source, the heat transfer room, the cooling tube, swing arm and air-blower, be equipped with the polylith division board in the heat transfer room, be equipped with the breach between division board and the heat transfer room lateral wall, the heat transfer room passes through the division board and forms airflow channel, the cold source sets up in airflow channel, the air-blower export is connected with the heat transfer room, airflow channel exports and is connected with the cooling tube, the cooling tube is connected with the swing arm, the swing arm sets up in the cubical switchboard body, the swing arm is equipped with cavity and a plurality of airflow hole that communicate with the cavity, airflow hole sets up towards the side, the swing arm rotates with airflow tube end and is connected and cavity and airflow tube intercommunication.

2. The mining low-voltage switch cabinet according to claim 1, wherein the cooling pipe comprises a main pipe and a plurality of sub cooling pipes, the main pipe is connected with the outlet of the airflow channel, the plurality of sub cooling pipes are respectively connected with the main pipe, and the plurality of sub cooling pipes are respectively rotatably connected with a rotary rod at the tail end thereof.

3. The mining low-voltage switch cabinet according to claim 1, wherein the distance between adjacent airflow holes is gradually increased along the direction far away from the tail end of the cooling pipe.

4. The mining low-voltage switch cabinet as claimed in claim 1, wherein the cold source is a semiconductor refrigeration sheet, and the cold end of the semiconductor refrigeration sheet is arranged in the heat exchange chamber.

5. The mining low-voltage switch cabinet according to claim 1, further comprising a filtering device, wherein the filtering device is arranged in the cooling pipe or between the blower and the heat exchange chamber.

6. The mining low-voltage switch cabinet according to claim 1, further comprising a dryer, wherein the dryer is arranged in the cooling pipe or between the blower and the heat exchange chamber.

7. The mining low-voltage switch cabinet according to claim 1, wherein a plurality of partition plates are arranged at intervals on the side wall of the vertical heat exchange chamber, adjacent gaps are reversely arranged, the area of each gap is smaller than that of each partition plate, and the airflow channel is in an s shape.

8. The mining low-voltage switch cabinet according to claim 1, wherein a plurality of partition plates are obliquely arranged relative to the side wall of the heat exchange chamber, the tail ends of the partition plates are deviated from the airflow flowing direction, and the adjacent gaps are reversely arranged.