Low-voltage power distribution cabinet with overheating protection

Abstract

The utility model discloses a low-voltage power distribution cabinet with overheating protection, and relates to the technical field of power distribution cabinets. The device comprises a cabinet body, a motor, a collecting barrel, a rotating shaft and a pump shell, a bottom cavity is formed in the inner wall of the lower end of the cabinet body, the motor is fixedly arranged in the bottom cavity, the rotating shaft is arranged at the output end of the motor, the outer wall of one end of the rotating shaft is sleeved with a first blade, and a bearing support is arranged on the inner wall of the upper end of the bottom cavity; a mounting shaft is mounted in the upper end of the bearing support, second blades are arranged on the outer wall of the upper end of the mounting shaft, a pump shell is arranged at the upper end of the bottom cavity, the outer wall of a rotating shaft of the pump shell is sleeved with an impeller, a collecting barrel is arranged on the rear side of the pump shell, a universal pipe is arranged at the lower end of the collecting barrel, and a suction cover is mounted at one end of the universal pipe in a communicating mode. The two ends of the cabinet body are provided with heat dissipation windows. According to the utility model, through the first blade, the second blade and the impeller which are driven by the same motor, heat dissipation and dust collection are realized, so that the subsequent heat dissipation of the cabinet body is stably carried out.

Description

Technical Field

[0001] This utility model relates to the field of power distribution cabinet technology, and in particular to a low-voltage power distribution cabinet with overheat protection. Background Technology

[0002] Low-voltage switchgear is a complete set of equipment in a power system used to receive, distribute and control AC voltage ≤1kV or DC voltage ≤1.5kV. It is the terminal node of the power network and rationally distributes the power energy of the upper-level power grid to the user-side load.

[0003] When the total power of load devices such as motors and lighting systems exceeds the rated current of the distribution cabinet, the conductors heat up due to excessive current. A common solution is to add a cooling fan inside the cabinet to enhance airflow and carry away the heat. However, during use, dust enters the cabinet through the ventilation windows, and the fan's operation causes this dust to swirl around. As dust accumulates inside the cabinet, the cooling fan's effectiveness gradually decreases, affecting the cabinet's heat dissipation stability. Therefore, those skilled in the art have provided a low-voltage distribution cabinet with overheat protection to solve the problems mentioned in the background section. Utility Model Content

[0004] 1. Technical Solution

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a low-voltage distribution cabinet with overheat protection, comprising a cabinet body, a motor, a collection cylinder, a rotating shaft, and a pump housing. The lower inner wall of the cabinet body has a bottom cavity, inside which the motor is fixed. A rotating shaft is located at the output end of the motor. One end of the rotating shaft has blades arranged in a circular array on its outer wall. A bearing bracket is located on the upper inner wall of the bottom cavity. An installation shaft is rotatably mounted inside the upper end of the bearing bracket. Another set of blades arranged in a circular array is located on the upper outer wall of the installation shaft. A pump housing is located at the upper end of the bottom cavity. An impeller is rotatably mounted inside the pump housing and fitted onto the outer wall of the pump housing's rotating shaft. A collection cylinder is located at the rear of the pump housing. A universal joint is located at the lower end of the collection cylinder, with one end of the universal joint connected to a suction hood. Heat dissipation windows are located at both ends of the cabinet body.

[0007] Furthermore, a cabinet door is rotatably installed at the front end of the cabinet, and the cabinet is located at the upper end of the bottom cavity;

[0008] Specifically, the cabinet door controls the opening and closing of the cabinet, and the electrical components inside the bottom cavity are installed in isolation from the cabinet body.

[0009] Furthermore, the pump casing suction end is provided with a closed cover, and the rotating shaft is rotatably mounted on the closed cover;

[0010] Specifically, the closed cover closes the suction end of the pump casing and provides rotational support for the shaft, preventing dust from entering the pump casing through the shaft gap and avoiding impeller jamming or wear.

[0011] Furthermore, a connecting cylinder is connected to the upper end of the pump casing suction end, and a suction pipe is provided at the upper end of the connecting cylinder. One end of the suction pipe is provided with a connecting pipe that is slidably installed inside the upper end of the collecting cylinder through a sliding sleeve.

[0012] Specifically, one end of the suction tube is slidably installed inside the upper end of the connecting tube to prevent gas leakage and support quick assembly and disassembly.

[0013] Furthermore, a filter bag is provided inside the collection cylinder, and a support rod arranged in a ring array and connected to the inner wall of the collection cylinder is provided inside the filter bag;

[0014] Specifically, the filter bag is reinforced with annular support rods to prevent the filter bag from collapsing due to the impact of suction airflow, thus ensuring a stable filtration area.

[0015] Furthermore, the pump casing output end is provided with an air supply pipe that penetrates the cabinet;

[0016] Specifically, the air supply pipe directs the filtered airflow outside the cabinet to prevent dust-laden hot air from circulating inside the cabinet.

[0017] 2. Beneficial effects

[0018] Compared with existing technologies, the advantages of this utility model are:

[0019] This invention utilizes a motor-driven blade to generate a transverse airflow, while a rotating blade generates a longitudinal airflow. The combined action of blades accelerates air exchange between the inside and outside of the cabinet, rapidly reducing the internal temperature. Simultaneously, it agitates dust inside the cabinet. The high-speed rotation of the impeller generates a strong suction force, which, in conjunction with the suction hood, captures the agitated dust, preventing dust accumulation and secondary settling inside the cabinet during heat dissipation. The dust is intercepted by a filter bag and collected in a collection cylinder. By reducing dust adhesion to electronic components, it prevents insulation materials from becoming damp or aging due to dust accumulation, extending the lifespan of electrical components and ensuring stable heat dissipation during cabinet use.

[0020] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, 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 1 This is a rear sectional three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a front-view three-dimensional structural diagram of the present invention;

[0024] Figure 3 This is a top-view three-dimensional structural diagram of the suction cover of this utility model;

[0025] Figure 4 This is a front-view three-dimensional structural diagram of the suction cover of this utility model;

[0026] Figure 5 This is a three-dimensional cross-sectional view of the pump casing and collecting cylinder of this utility model.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Cabinet body; 2. Cabinet door; 3. Ventilation window; 4. Motor; 5. Suction hood; 6. Bottom cavity; 7. Collection cylinder; 8. Rotating shaft; 9. Blade 1; 10. Pump casing; 11. Bevel gear 1; 12. Mounting shaft; 13. Bevel gear 2; 14. Blade 2; 15. Universal joint; 16. Air supply pipe; 17. Suction pipe; 18. Impeller; 19. Connecting cylinder; 20. Closing cover; 21. Connecting pipe; 22. Filter bag; 23. Support rod; 24. Bearing bracket. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0033] Example 1

[0034] Please see Figures 1-5 As shown, this embodiment is a low-voltage distribution cabinet with overheat protection, including a cabinet body 1, a motor 4, a collection cylinder 7, a rotating shaft 8, and a pump casing 10. The lower inner wall of the cabinet body 1 is provided with a bottom cavity 6, and the motor 4 is fixed inside the bottom cavity 6. The output end of the motor 4 is provided with a rotating shaft 8. One end of the rotating shaft 8 is sleeved with blades 9 arranged in a ring array. The upper inner wall of the bottom cavity 6 is provided with a bearing bracket 24. The upper end of the bearing bracket 24 is rotatably mounted with a mounting shaft 12. The upper outer wall of the mounting shaft 12 is provided with blades 14 arranged in a ring array. The upper end of the bottom cavity 6 is provided with a pump casing 10. The outer wall of the rotating shaft 8 of the pump casing 10 is sleeved with an impeller 18 rotatably mounted inside the pump casing 10. The rear side of the pump casing 10 is provided with a collection cylinder 7. The lower end of the collection cylinder 7 is provided with a universal tube 15. One end of the universal tube 15 is connected to a suction cover 5. Both ends of the cabinet body 1 are provided with heat dissipation windows 3.

[0035] Cabinet 1 has a cabinet door 2 installed at the front end. Cabinet 1 is located at the top of the bottom cavity 6. A bevel gear 11 is sleeved on the outer wall of the rotating shaft 8. A bevel gear 13 that meshes with bevel gear 11 is sleeved on the outer wall of the mounting shaft 12.

[0036] The pump casing 10 is equipped with a closed cover 20 at the suction end, and the rotating shaft 8 is rotatably mounted on the closed cover 20.

[0037] A connecting cylinder 19 is connected to the upper end of the pump casing 10 for suction. A suction pipe 17 is provided at the upper end of the connecting cylinder 19. A connecting pipe 21 is provided at one end of the suction pipe 17 and is slidably installed inside the upper end of the collecting cylinder 7 through a sliding sleeve.

[0038] The collection cylinder 7 is equipped with a filter bag 22, and the filter bag 22 is equipped with support rods 23 arranged in a ring array and connected to the inner wall of the collection cylinder 7.

[0039] The pump casing 10 is provided with an air supply pipe 16 that penetrates the cabinet 1. In this embodiment, during the use of the low-voltage distribution cabinet, the internal heat is transferred to the outside through the heat dissipation window 3, and at the same time, the cold air from the outside enters the low-voltage distribution cabinet. During this process, dust will be carried into the low-voltage distribution cabinet. When the low-voltage distribution cabinet is detected to be overheating, the motor 4 drives the rotating shaft 8 to rotate, which drives the blade 9 to rotate, thereby strengthening the air flow and quickly dissipating heat inside the cabinet 1. When the motor 4 rotates, it drives the bevel gear 11 to push the bevel gear 13, which drives the mounting shaft 12 to rotate. The mounting shaft 12 drives the fan blade 2 to rotate, forming a longitudinal airflow. The airflow directly acts on the electrical components inside the cabinet 1, causing the dust adhering to the electrical components to be stirred up. Because the rotating shaft 8 rotates, it drives the impeller 18 to rotate inside the pump casing 10, generating a suction force at the suction end of the pump casing 10. Because the suction end of the pump casing 10 is closed by the closing cover 20 and rotated and installed with the rotating shaft 8, the rotation of the rotating shaft 8 is guaranteed.

[0040] Meanwhile, the upper end of the suction end is connected to the connecting cylinder, and the suction force is transmitted through the suction pipe 17. The suction force enters the connecting pipe 21, the collection cylinder 7, the universal pipe 15 and the suction hood 5. The suction hood 5 sucks up the dust. The opening direction and position height of the universal pipe 15 can be flexibly adjusted to adapt to the installation needs of low-voltage distribution cabinets with different signals. While the low-voltage distribution cabinet dissipates heat, it also removes dust from the inside of the cabinet 1. It is worth noting that the number of racks of the first bevel gear 11 is greater than that of the second bevel gear 13, which accelerates the impeller 18. The suction force is greater than the wind force generated when the blades 14 and 9 rotate. The sucked dust enters the collection cylinder 7 and is intercepted by the filter bag 22. The sucked airflow is transported to the outside through the air supply pipe 16.

[0041] The impeller's 18 suction power precisely captures dust, avoiding a vicious cycle of heat dissipation and dust accumulation. The integrated motor 4 drives multiple components, reducing additional energy consumption. The collection cylinder 7 collects dust for centralized processing, preventing dust diffusion and pollution. Through a dual-mode system of forced cooling and active dust removal, the efficiency reduction problem caused by dust entering through the heat dissipation window 3 is completely eliminated. Dynamic dust removal reduces the risk of insulation failure or partial discharge caused by dust accumulation, improving electrical safety and preventing dust accumulation inside the low-voltage distribution cabinet, ensuring stable heat dissipation for the low-voltage distribution cabinet.

[0042] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A low-voltage power distribution cabinet with overheat protection, comprising a cabinet body (1), a motor (4), a collecting cylinder (7), a rotating shaft (8) and a pump shell (10), characterized in that: The lower end inner wall of the cabinet body (1) is provided with a bottom cavity (6), the inside of the bottom cavity (6) is fixed with a motor (4), the output end of the motor (4) is provided with a rotating shaft (8), one end of the rotating shaft (8) is sleeved with a plurality of annularly arranged blade I (9), the upper end inner wall of the bottom cavity (6) is provided with a bearing support (24), the upper end of the bearing support (24) is rotatably installed with a mounting shaft (12), the upper end of the mounting shaft (12) is provided with a plurality of annularly arranged blade II (14), the upper end of the bottom cavity (6) is provided with a pump shell (10), the outer wall of the rotating shaft (8) of the pump shell (10) is sleeved with an impeller (18) rotatably installed in the inside of the pump shell (10), the rear side of the pump shell (10) is provided with a collecting cylinder (7), the lower end of the collecting cylinder (7) is provided with a universal pipe (15), one end of the universal pipe (15) is communicated and installed with a suction cover (5), both ends of the cabinet body (1) are provided with a heat dissipation window (3).

2. The low-voltage power distribution cabinet with overheat protection according to claim 1, characterized in that: The front end of the cabinet body (1) is rotatably installed with a cabinet door (2), the cabinet body (1) is located on the upper end of the bottom cavity (6).

3. The low-voltage power distribution cabinet with overheat protection according to claim 1, characterized in that: The suction end of the pump shell (10) is provided with a closing cover (20), the rotating shaft (8) is rotatably installed on the closing cover (20).

4. The low-voltage power distribution cabinet with overheat protection according to claim 1, characterized in that: The upper end of the suction end of the pump shell (10) is communicated and installed with a connecting cylinder (19), the upper end of the connecting cylinder (19) is provided with a suction pipe (17), one end of the suction pipe (17) is provided with a butt joint pipe (21) slidably installed in the inside of the upper end of the collecting cylinder (7) through a sliding sleeve.

5. The low voltage switchgear with overheat protection according to claim 1, characterized in that: The inside of the collecting cylinder (7) is provided with a filter bag (22), the inside of the filter bag (22) is provided with a plurality of annularly arranged support rods (23) connected with the inner wall of the collecting cylinder (7).

6. The low voltage switchgear with overheat protection according to claim 1, characterized in that: The output end of the pump shell (10) is provided with a gas delivery pipe (16) penetrating the cabinet body (1), the outer wall of the rotating shaft (8) is sleeved with a conical gear I (11), the outer wall of the mounting shaft (12) is sleeved with a conical gear II (13) engaged with the conical gear I (11).

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