Novel modularized DC power distribution device

Abstract

The utility model discloses a novel modularized DC power distribution device comprising a cabinet body, the top of the cabinet body is provided with a heat dissipation port, the heat dissipation port is fixedly provided with a water cooling box used for storing water cooling liquid, and the side wall of the water cooling box is provided with a liquid inlet interface and a liquid outlet interface which are used for being externally connected with a water cooling circulation system. A plurality of vertically-through heat exchange pipes are arranged in the water cooling box, the lower ends of the heat exchange pipes are communicated with the interior of the cabinet body, a confluence chamber communicated with the upper ends of the heat exchange pipes is arranged above the water cooling box, a ventilation opening is formed in the bottom of the cabinet body, a ventilation fan is installed on the ventilation opening, and a ventilation chamber is connected to the lower portion of the ventilation opening. And a return pipe is connected between the ventilation chamber and the confluence chamber. According to the utility model, the cabinet body is in a modular design, the water cooling box cools air in the cabinet body through the heat exchange tube, air cooling of the internal circulation air duct is realized by matching with the ventilation fan, the heat dissipation of the single cabinet body is uniform, the water cooling box is convenient to be externally connected with a water cooling circulation system for use, the volume of the cabinet body is small, and the installation and layout are convenient and flexible.

Description

Technical Field

[0001] The utility model relates to the technical field of direct current power distribution devices, in particular to a novel modular direct current power distribution device. Background Art

[0002] The DC power distribution cabinet needs to convert AC power into DC power, and the AC / DC transformer is heavy and generates a lot of heat. The current design of the power distribution cabinet does not have upper and lower layers, and the upper and lower parts cannot form independent spaces. The overall space in the cabinet is large, and the heat dissipation effect of the fan is not good. In the Chinese patent document with the publication number CN216672336U, a ship DC power distribution device is disclosed, including a closed water cooling cabinet, a power cabinet and a control cabinet. A liquid-liquid heat exchanger and an internal circulation pump are provided in the water cooling cabinet. A first partition is provided between the water cooling cabinet and the power cabinet. The water cooling cabinet, the power cabinet and the control cabinet are provided with an internal circulation air duct. The first partition is equipped with a first circulation fan and an air-liquid heat exchanger. The liquid-liquid heat exchanger is provided with a liquid-cooled internal circulation pipeline and a liquid-cooled external circulation pipeline extending outside the water cooling cabinet. The liquid-cooled internal circulation pipeline extends to the power cabinet and the control cabinet. The internal circulation pump and the air-liquid heat exchanger are both connected to the liquid-cooled internal circulation pipeline. The utility model has the advantages of good heat dissipation performance, strong environmental adaptability, stable and reliable operation, etc. The defects of the above-mentioned prior art are: the heat dissipation system formed by the water cooling cabinet and the internal circulation air duct causes the cabinet body of the distribution cabinet to be too large, the heat dissipation efficiency is slow, the cooling effect on the internal components is uneven, and it is easy to form heat dissipation dead corners and cause local high temperatures. In addition, the overall use cost is high and it is not convenient to flexibly layout. Utility Model Content

[0003] The utility model aims to solve the problems existing in the above-mentioned prior art and provides a novel modular DC power distribution device. A single cabinet has uniform heat dissipation, is convenient for use with an external water cooling circulation system, is small in size, and is convenient and flexible for installation and layout.

[0004] The utility model adopts a technical solution to solve the technical problem: a novel modular DC power distribution device, comprising a cabinet, a heat dissipation port is provided on the top of the cabinet, a water cooling box for storing water cooling liquid is fixedly installed on the heat dissipation port, a liquid inlet interface and a liquid outlet interface for an external water cooling circulation system are provided on the side wall of the water cooling box, a plurality of heat exchange tubes passing through from top to bottom are provided inside the water cooling box, the lower ends of the heat exchange tubes are connected with the interior of the cabinet, a confluence chamber connected with the upper ends of the heat exchange tubes is provided above the water cooling box, a vent is provided at the bottom of the cabinet, a ventilation fan is installed on the vent, a ventilation chamber is connected below the vent, and a reflux pipe is connected between the ventilation chamber and the confluence chamber.

[0005] For further improvement, a water collecting bucket is fixedly installed below the water cooling box at the heat dissipation port, shutters are arranged on the side walls of the water collecting bucket, and a dehumidification box for placing a desiccant or an external drain pipe is arranged at the bottom of the conical water collecting bucket.

[0006] For further improvement, the return pipe is provided with a section of serpentine pipe, and the serpentine pipe is located on the inner wall of the cabinet.

[0007] For further improvement, a bypass valve is provided on the reflux pipe.

[0008] For further improvement, a vertical shaft is rotatably installed on the top of the confluence chamber, the lower end of the vertical shaft is fixedly connected to a driving impeller arranged in the confluence chamber, and the lower end of the vertical shaft is fixedly connected to a heat dissipation and dustproof fan arranged above the confluence chamber.

[0009] The beneficial effects of the utility model are as follows: the cabinet of the utility model is of modular design, the cabinet is provided with a water cooling box to cool the air inside the cabinet through a heat exchange pipe, and cooperates with a ventilation fan to realize air cooling of the internal circulation duct, the heat dissipation efficiency is fast, the heat dissipation of a single cabinet is uniform, the water cooling box is convenient for use with an external water cooling circulation system, and the installation cost is effectively reduced. The cabinet is small in size, and the installation layout is convenient and flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of Example 1;

[0011] Figure 2 It is a structural schematic diagram of Example 2;

[0012] Explanation of the accompanying drawings: 1. Cabinet, 2. Heat dissipation port, 3. Water cooling box, 4. Liquid inlet interface, 5. Liquid outlet interface, 6. Heat exchange tube, 7. Confluence chamber, 8. Ventilation port, 9. Ventilation fan, 10. Ventilation chamber, 11. Reflux pipe, 12. Water collecting bucket, 13. Shutter, 14. Dehumidification box, 15. Serpentine pipe, 16. Bypass valve, 17. Vertical axis, 18. Driving impeller, 19. Heat dissipation and dust-proof fan. DETAILED DESCRIPTION

[0013] The utility model is further described below in conjunction with the accompanying drawings:

[0014] Refer to the attached Figure 1Embodiment 1: A novel modular DC power distribution device comprises a cabinet 1, wherein a heat dissipation port 2 is provided on the top of the cabinet 1, a water cooling box 3 for storing water cooling liquid is fixedly mounted on the heat dissipation port 2, a liquid inlet interface 4 and a liquid outlet interface 5 for an external water cooling circulation system are provided on the side wall of the water cooling box 3, a plurality of heat exchange tubes 6 which pass through the water cooling box 3 from top to bottom are provided inside the water cooling box 3, the lower ends of the heat exchange tubes 6 are connected to the interior of the cabinet 1, a confluence chamber 7 which is connected to the upper ends of the heat exchange tubes 6 is provided above the water cooling box 3, a vent 8 is provided at the bottom of the cabinet 1, a ventilation fan 9 is installed on the vent 8, a ventilation chamber 10 is connected below the vent 8, and a reflux pipe 11 is connected between the ventilation chamber 10 and the confluence chamber 7.

[0015] When the cabinet 1 of the DC power distribution device adopts a closed heat dissipation method, the air inside it is dry, and the motor drives the ventilation fan 9 to rotate, blowing air upward at the vent 8, and the gas flows through the cabinet, the heat exchange tube 6, the confluence chamber 7, the return pipe 11 and the ventilation chamber 10 for air-cooled circulation heat dissipation. The heat of the heating components in the cabinet (rectifier module, inverter module, intermediate DC busbar, fast fuse, capacitor and reactor, etc.) is dissipated by air cooling, so that the temperature in the cabinet is uniform, and the hot air flows upward, and exchanges heat with the coolant in the water cooling box 3 when passing through the heat exchange tube 6, ensuring that the heat in the cabinet is transferred to the coolant in the water cooling box 3. The liquid inlet interface 4 and the liquid outlet interface 5 are externally connected to the water cooling circulation system, so that the heated coolant is quickly discharged and replaced with low-temperature coolant, thereby quickly taking away the heat. The cabinet of the utility model is of modular design. The cabinet is provided with a water cooling box to cool the air inside the cabinet through a heat exchange pipe, and cooperates with a ventilation fan to realize air cooling of the internal circulation air duct. The heat dissipation efficiency is fast, and the heat dissipation of a single cabinet is uniform. The water cooling box is convenient for use with an external water cooling circulation system, which effectively reduces the installation cost. The cabinet is small in size, which is convenient and flexible for installation layout.

[0016] Embodiment 2: When the cabinet 1 of the DC power distribution device needs to be opened frequently and has poor airtightness, in order to reduce the occurrence of condensation, based on Embodiment 1, as shown in the attached Figure 2 As shown, the heat dissipation port 2 is fixedly provided with a water collecting bucket 12 below the water cooling box 3, a shutter 13 is provided on the side wall of the water collecting bucket 12, and a dehumidification box 14 for placing a desiccant or an external drain pipe is provided at the bottom of the conical water collecting bucket 12. When the hot and humid air contacts the heat exchange tube, condensation occurs, and the dew is collected into the dehumidification box 14 through the water collecting bucket 12, and is absorbed and solidified by the desiccant or discharged to the outside of the cabinet through the drain pipe, thereby solving the problem that condensation is easy to occur inside the power distribution cabinet in a hot and humid environment.

[0017] The return pipe 11 is provided with a section of serpentine pipe 15, which is located on the inner wall of the cabinet 1. The serpentine pipe 15 can increase the contact area with the cabinet air, improve the heat dissipation efficiency, and can also play a heat insulation role to avoid mutual heat transfer interference between the two cabinets. The return pipe 11 is provided with a bypass valve 16. One function of the bypass valve 16 is to connect a fire extinguishing gas device or an air conditioning device to facilitate the adjustment of the air environment in the cabinet. Another function is to facilitate the use of cabinets, so that each small cabinet can complement each other to form a large air-cooled heat dissipation system.

[0018] A vertical shaft 17 is rotatably mounted on the top of the confluence chamber 7, and the lower end of the vertical shaft 17 is fixedly connected to a driving impeller 18 disposed in the confluence chamber 7, and the lower end of the vertical shaft 17 is fixedly connected to a heat dissipation and dustproof fan 19 disposed above the confluence chamber 7. The gas flowing through the confluence chamber 7 drives the driving impeller 18 to rotate, and drives the heat dissipation and dustproof fan 19 to rotate through the vertical shaft 17, thereby increasing the air flow rate above the confluence chamber 7, playing a role in heat dissipation and dust removal. Workers can judge the air circulation in the cabinet by observing the rotation of the heat dissipation and dustproof fan 19, thereby timely troubleshooting the ventilating fan fault and ensuring the heat dissipation performance of the cabinet.

[0019] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A novel modular DC power distribution device, comprising a cabinet (1), characterized in that: The cabinet (1) is provided with a heat dissipation port (2) on the top, a water cooling box (3) for storing water cooling liquid is fixedly mounted on the heat dissipation port (2), a liquid inlet interface (4) and a liquid outlet interface (5) for externally connecting a water cooling circulation system are arranged on the side wall of the water cooling box (3), a plurality of heat exchange tubes (6) are arranged inside the water cooling box (3) and are connected vertically, the lower ends of the heat exchange tubes (6) are connected to the interior of the cabinet (1), a confluence chamber (7) connected to the upper ends of the heat exchange tubes (6) is arranged above the water cooling box (3), a ventilating port (8) is arranged at the bottom of the cabinet (1), a ventilation fan (9) is mounted on the ventilating port (8), a ventilation chamber (10) is connected below the ventilating port (8), and a return pipe (11) is connected between the ventilation chamber (10) and the confluence chamber (7).

2. A novel modular DC power distribution device according to claim 1, characterized in that: The heat dissipation port (2) is fixedly provided with a water collecting bucket (12) below the water cooling box (3), a shutter (13) is provided on the side wall of the water collecting bucket (12), and a dehumidification box (14) for placing a desiccant or an external drainage pipe is provided at the bottom of the conical water collecting bucket (12).

3. A novel modular DC power distribution device according to claim 1, characterized in that: The return pipe (11) is provided with a section of serpentine pipe (15), and the serpentine pipe (15) is located on the inner wall of the cabinet (1).

4. A novel modular DC power distribution device according to claim 1, characterized in that: The reflux pipe (11) is provided with a bypass valve (16).

5. A novel modular DC power distribution device according to claim 1, characterized in that: A vertical shaft (17) is rotatably mounted on the top of the confluence chamber (7), the lower end of the vertical shaft (17) is fixedly connected to a driving impeller (18) arranged in the confluence chamber (7), and the lower end of the vertical shaft (17) is fixedly connected to a heat dissipation and dustproof fan (19) arranged above the confluence chamber (7).

Images