Cabinet body structure of direct-current transmission cabinet

Abstract

The utility model discloses a cabinet body structure of a direct current transmission cabinet, which belongs to the technical field of direct current transmission cabinets and comprises a main body, a bottom groove is arranged at the center of the bottom wall of the main body, a grating plate is fixedly welded in the bottom groove, and a plurality of air inlet holes for air inlet of an inner cavity of the main body are formed on the grating plate. At least two temperature sensors are installed on each of the two sides of an inner cavity of the body, a controller is installed on one side of the top wall of the inner cavity of the body, an exhaust hole is formed in the center of the top wall of the body and filled with a top cover plate, a square rubber ring is fixedly bonded to the outer wall of the top cover plate, and the rubber ring is attached to the inner wall of the exhaust hole. Extension columns are symmetrically welded to the two sides of the bottom wall of the inner cavity of the main body, and mounting plates are welded to the bottom walls of the two extension columns. According to the cabinet body structure of the direct-current transmission cabinet, heat can be effectively dissipated, the working time of the heat removal fan is shortened, dust entering the inner cavity of the main body is reduced, and noise is also reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of DC drive cabinets, and particularly relates to a cabinet body structure of a DC drive cabinet. Background Art

[0002] A thyristor is a high-power electrical component, which has the advantages of small volume, high efficiency, long service life, etc. In an automatic control system, a thyristor can be used as a high-power driving device to realize the control of high-power equipment with a small-power control component; thyristors have been widely used in AC and DC motor speed regulation systems, power regulation systems and servo systems, so they are often used inside DC drive cabinets.

[0003] In the process of realizing the present utility model, the inventor found that there are at least the following problems in this technology: for the structure of the current DC drive cabinet body, in order to provide better heat dissipation conditions, a fan is usually used for active heat dissipation of the electronic components in the cabinet. In this way, although the heat dissipation is better, the continuous operation of the fan will inevitably greatly increase the probability of dust entering the cabinet, and at the same time, there is also continuous noise.

[0004] Therefore, we propose a cabinet body structure of a DC drive cabinet to solve the above problems. Content of the Utility Model

[0005] The main purpose of the present utility model is to provide a cabinet body structure of a DC drive cabinet, which can not only effectively dissipate heat, but also reduce the working time of the exhaust fan, reduce the dust entering the main body cavity, and reduce the noise, and can effectively solve the problems in the background art.

[0006] In order to achieve the above purpose, the present utility model adopts the following technical solutions:

[0007] A cabinet body structure of a DC drive cabinet includes a main body. A bottom groove is opened at the center of the bottom wall of the main body. A grille plate is fixedly welded in the bottom groove, and a plurality of air inlet holes for the air intake of the main body cavity are formed on the grille plate.

[0008] At least two temperature sensors are installed on both sides of the main body cavity, and a controller is installed on one side of the top wall of the main body cavity. The temperature sensor can refer to the technical principle of the pt100 model, and the controller can refer to the technical principle of the S7-200 model. An exhaust hole is opened at the center of the top wall of the main body. A top cover plate is filled in the exhaust hole, and an "O"-shaped rubber ring is fixedly adhered to the outer wall of the top cover plate. The rubber ring fits with the inner wall of the exhaust hole to close the exhaust hole.

[0009] Extension columns are symmetrically welded on both sides of the bottom wall of the inner cavity of the main body, and mounting plates are welded to the bottom walls of the two extension columns. Ventilation grooves are penetrated on both sides of the mounting plate, and heat exhaust fans are respectively installed on the top wall of the mounting plate above the two ventilation grooves, and the heat exhaust fans need to be powered by external power facilities. A cylinder is connected at the center of the bottom wall of the mounting plate, and a transmission rod is installed on the cylinder, wherein the top of the transmission rod is connected to the top cover plate, and the temperature sensor, heat exhaust fan and cylinder are all coupled to the controller.

[0010] As a preferred embodiment, the inner cavity of the main body is opened on one side wall thereof, and a side sealing door is connected to the side where the inner cavity opening of the main body is located through multiple hinges; a handle is connected to the side of the side sealing door facing away from the multiple hinges, and the side sealing door can be flipped over by the handle.

[0011] As a preferred embodiment, a dustproof net is attached to the bottom wall of the grille plate, wherein screws penetrating into the main body are installed at the four corners of the dustproof net in the vertical direction; thereby, the air entering the inner cavity of the main body is filtered through the dustproof net to remove large particles and large-volume solid debris.

[0012] As a preferred embodiment, the transmission rod is vertically arranged and connected to the center of the top wall of the mounting plate, so that the transmission rod structure remains stable and can be normally extended and retracted.

[0013] As a preferred embodiment, legs are welded at the four corners of the bottom wall of the main body, and the four legs are distributed in a rectangular array; so that the four legs can support the main body and the structure thereon, and at the same time facilitate air intake in the bottom tank.

[0014] In summary, the technical effects and advantages of the utility model are as follows:

[0015] The cabinet structure of the DC transmission cabinet monitors the internal ambient temperature in real time by using a temperature sensor in the inner cavity of the main body. When the ambient temperature is higher than a set maximum threshold value (for example, 50°C), it transmits an electrical signal to the controller, so that the controller drives the cylinder to operate to extend the transmission rod, push the top cover plate upward, and open the exhaust hole. At the same time, the controller drives the heat exhaust fan to operate to extract the heat in the main body, until the ambient temperature of the inner cavity of the main body is lower than a minimum threshold value (for example, 30°C), the cylinder drives the top cover plate to return to its original position, and the heat exhaust fan stops running. This can effectively dissipate heat, reduce the working time of the heat exhaust fan, reduce the entry of dust into the inner cavity of the main body, and reduce noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the utility model after partial structure is disassembled;

[0018] Figure 3 For this utility model Figure 2 A magnified view of the structure at center;

[0019] Figure 4 It is a vertical cross-sectional view of the utility model;

[0020] Figure 5 For this utility model Figure 4 Enlarged view of the structure at point B in the middle.

[0021] In the figure: 1. Main body; 2. Side sealing door; 3. Support foot; 4. Bottom groove; 5. Grille plate; 6. Air inlet; 7. Dust screen; 8. Screws; 9. Temperature sensor; 10. Controller; 11. Extension column; 12. Mounting plate; 13. Exhaust fan; 14. Ventilation groove; 15. Cylinder; 16. Conveyor rod; 17. Top cover plate; 18. Rubber ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-Figure 5 A DC transmission cabinet structure includes a main body 1, an inner cavity of the main body 1 is opened on one side wall thereof, and a side sealing door 2 is connected to the side where the inner cavity opening of the main body 1 is located through a plurality of hinges, a handle is connected to the side of the side sealing door 2 facing away from the plurality of hinges, and the side sealing door 2 can be turned over by the handle, a bottom groove 4 is opened at the center of the bottom wall of the main body 1, and legs 3 are welded at the four corners of the bottom wall of the main body 1, and the four legs 3 are distributed in a rectangular array, so that the four legs 3 can support the main body 1 and the structure thereon, and at the same time facilitate air intake in the bottom groove 4;

[0024] A grid plate 5 is fixedly welded in the bottom groove 4, and a plurality of air inlet holes 6 for air intake into the inner cavity of the main body 1 are formed on the grid plate 5. A dustproof net 7 is attached to the bottom wall of the grid plate 5, and screws 8 penetrating into the main body 1 are installed at the four corners of the dustproof net 7 in the vertical direction, so that the air entering the inner cavity of the main body 1 is filtered through the dustproof net 7 to filter out large particles and large solid debris therein;

[0025] At least two temperature sensors 9 are installed on both sides of the inner cavity of the main body 1, and a controller 10 is installed on one side of the top wall of the inner cavity of the main body 1. The temperature sensor 9 can refer to the technical principle of the PT100 model, and the controller 10 can refer to the technical principle of the S7-200 model. An exhaust hole is opened at the center of the top wall of the main body 1, and a top cover plate 17 is filled in the exhaust hole. An O-shaped rubber ring 18 is fixedly bonded to the outer wall of the top cover plate 17, and the rubber ring 18 fits with the inner wall of the exhaust hole to close the exhaust hole.

[0026] Extension columns 11 are symmetrically welded on both sides of the bottom wall of the inner cavity of the main body 1, and a mounting plate 12 is welded to the bottom walls of the two extension columns 11. Venting grooves 14 are respectively penetrated through both sides of the mounting plate 12, and exhaust fans 13 are respectively installed above the two venting grooves 14 on the top wall of the mounting plate 12. The exhaust fans 13 need to be powered by external power facilities. A cylinder 15 is connected to the center of the bottom wall of the mounting plate 12, and a transmission rod 16 is installed on the cylinder 15. The transmission rod 16 is vertically arranged and connected to the center of the top wall of the mounting plate 12, so that the structure of the transmission rod 16 is stable and can be normally telescoped. The top of the transmission rod 16 is connected to the top cover plate 17. The temperature sensors 9, the exhaust fans 13 and the cylinder 15 are all coupled to the controller 10.

[0027] The cabinet structure of this DC drive cabinet: When in use, first install the thyristor and its related electronic components in the inner cavity of the main body 1, and the positions of these components do not conflict with those of the temperature sensors 9 and the controller 10. In actual use, the thyristor and related electronic components work continuously and release heat, which will be dissipated in the inner cavity of the main body 1. Therefore, multiple temperature sensors 9 continuously monitor the ambient temperature in the main body 1. When the ambient temperature monitored by any one of the temperature sensors 9 is higher than a set maximum temperature threshold (for example, 50 °C), at this time, the temperature sensor 9 transmits an electrical signal to the controller 10, so that the controller 10 drives the two exhaust fans 13 and the cylinder 15 to operate. Among them, the operation of the cylinder 15 drives the transmission rod 16 to extend, so that the top cover plate 17 and the rubber ring 18 move upward and open the exhaust hole. The two exhaust fans 13 can extract the air in the inner cavity of the main body 1 (the cold air from the outside enters the main body 1 through the bottom groove 4 and the air inlet hole 6). After continuous heat dissipation, when the ambient temperature in the main body 1 is lower than a set minimum threshold (for example, 30 °C), at this time, the controller 10 drives the exhaust fans 13 to stop operating, so that the cylinder 15 drives the transmission rod 16 to contract, so that the top cover plate 17 and the rubber ring 18 return to their original positions and close the exhaust hole.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A DC transmission cabinet structure, comprising a main body (1), characterized in that: A bottom groove (4) is provided at the center of the bottom wall of the main body (1), wherein a grid plate (5) is fixedly welded inside the bottom groove (4), and a plurality of air inlet holes (6) are formed on the grid plate (5) for air intake into the inner cavity of the main body (1); At least two temperature sensors (9) are installed on both sides of the inner cavity of the main body (1), and a controller (10) is installed on one side of the top wall of the inner cavity of the main body (1). An exhaust hole is opened at the center of the top wall of the main body (1), and the exhaust hole is filled with a top cover plate (17). A rubber ring (18) in the shape of a square is fixedly bonded to the outer wall of the top cover plate (17), and the rubber ring (18) is in contact with the inner wall of the exhaust hole; Extension columns (11) are symmetrically welded on both sides of the bottom wall of the inner cavity of the main body (1), and mounting plates (12) are welded on the bottom walls of the two extension columns (11). Air vents (14) are penetrated on both sides of the mounting plate (12), and heat exhaust fans (13) are respectively installed on the top wall of the mounting plate (12) above the two air vents (14). The heat exhaust fans (13) need to be powered by external power facilities. A cylinder (15) is connected to the center of the bottom wall of the mounting plate (12), and a transmission rod (16) is installed on the cylinder (15), wherein the top of the transmission rod (16) is connected to the top cover plate (17). The temperature sensor (9), the heat exhaust fan (13) and the cylinder (15) are all coupled to the controller (10).

2. A DC transmission cabinet structure according to claim 1, characterized in that: The inner cavity of the main body (1) is opened on one side wall thereof, and the side where the inner cavity opening of the main body (1) is located is connected to a side sealing door (2) via a plurality of hinges.

3. A DC transmission cabinet structure according to claim 1, characterized in that: The bottom wall of the grille plate (5) is fitted with a dustproof net (7), wherein screws (8) penetrating into the main body (1) are installed at the four corners of the dustproof net (7) in a vertical direction.

4. A DC transmission cabinet structure according to claim 1, characterized in that: The transmission rod (16) is vertically arranged and connected to the center of the top wall of the mounting plate (12).

5. The DC transmission cabinet structure according to claim 1 is characterized in that: Support legs (3) are welded to the four corners of the bottom wall of the main body (1), and the four support legs (3) are distributed in a rectangular array.

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