Power distribution cabinet capable of realizing independent direct current power supply

Abstract

The utility model discloses a power distribution cabinet capable of independent direct current power supply, which relates to the technical field of power distribution cabinets and comprises a cabinet body, a cabinet door is hinged to one side of the cabinet body, an air inlet is formed in the outer wall of the top of the cabinet body, fan blades on a rotating shaft are driven to rotate through external drive, and then air is sucked into the cabinet body from the air inlet. Air carrying part of heat is discharged out of the cabinet body through an air outlet, a pulley is extruded through a cam on a rotating shaft, a sealing plate on a connecting rod is promoted to slide in a reciprocating mode along the interior of a conveying pipe, cooling water is pumped into the conveying pipe through the pressure difference, and backflow of the cooling water is prevented through a one-way valve; the coiled cooling pipes can promote cooling water to better absorb heat in the cabinet body, heat dissipation is carried out in two modes of air cooling and water cooling, the heat dissipation effect of the power distribution cabinet can be effectively improved, it can be ensured that the internal temperature of the power distribution cabinet is kept within a stable range for a long time, and the service life of electrical components in the power distribution cabinet can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution cabinets, in particular to a power distribution cabinet capable of supplying power by direct current alone. Background Art

[0002] The distribution cabinet is divided into power distribution cabinet, lighting distribution cabinet and metering cabinet. It is the final equipment of the power distribution system. The distribution cabinet is a general term for the motor control center. The distribution cabinet is used in occasions where the load is relatively dispersed and there are fewer circuits.

[0003] Existing distribution cabinets usually use natural ventilation to dissipate heat. Since a large number of electrical components and equipment are integrated inside the distribution cabinet, these devices will generate a large amount of heat during operation. However, the heat dissipation effect is poor when natural ventilation is used to dissipate heat, which may cause the temperature of the equipment to rise, thereby affecting its performance and stability, and may even cause safety accidents such as fire. Utility Model Content

[0004] In view of this, in view of the deficiencies in the prior art, the utility model provides a power distribution cabinet capable of supplying power by direct current alone, so as to solve the problem in the prior art of poor heat dissipation resulting in increased equipment temperature.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a power distribution cabinet capable of being powered by direct current alone, comprising a cabinet body, a cabinet door being hingedly connected to one side of the cabinet body, an air inlet being provided on the outer wall at the top of the cabinet body, an air outlet being provided on the inner wall at one side of the cabinet body, the air outlet being located directly below the cabinet door, a rotating shaft being provided on the inner wall at the top of the cabinet body, fan blades being provided on the bottom end of the rotating shaft, a water inlet pipe being provided on the inner wall at a side of the cabinet body away from the cabinet door, a delivery pipe being provided at one end of the water inlet pipe, a cooling pipe being provided at one end of the delivery pipe, and a water outlet pipe being provided at one end of the cooling pipe; a DC power supply component being provided on the inner wall at a side of the cabinet body away from the cabinet door, which is used as a backup power supply for the cabinet body.

[0006] Preferably, filter screens are provided inside the air inlet and the air outlet, and the fan blades are located directly below the air inlet to prevent impurities in the external environment from entering the cabinet. The water inlet pipe and the water outlet pipe are both connected to an external water tank.

[0007] Preferably, a cam is provided on the outer surface of the rotating shaft, a sealing plate is slidably provided on the inner surface of the conveying pipe, a connecting rod is provided on one side of the sealing plate, a pulley is provided on one end of the connecting rod, the pulley is located on the outer surface of the conveying pipe, and the pulley is in contact with the cam.

[0008] Preferably, the delivery pipe is L-shaped as a whole, and the sealing plate is located inside the transverse pipe of the delivery pipe, which is used to reduce the pressure at the intersection of the water inlet pipe and the delivery pipe.

[0009] Preferably, a telescopic spring is provided between the pulley and the inner wall of the cabinet top, and the telescopic spring is sleeved on the outer surface of the connecting rod, and is used to cause the sealing plate to return to its original position.

[0010] Preferably, both the water inlet pipe and the delivery pipe are provided with a one-way valve, and the one-way valves on the two lead to opposite directions, which is used to prevent the cooling water from flowing back.

[0011] Preferably, the DC power supply assembly comprises a mounting frame, on which a rectifier and a filter are sequentially arranged, and a DC interface is arranged on an outer wall of one side of the cabinet.

[0012] Preferably, the rectifier is electrically connected to the filter, which is used to filter out noise and ripples in the circuit; the filter is electrically connected to the DC interface, which is used to output voltage more smoothly to ensure the stability and reliability of the DC circuit.

[0013] Preferably, a waterproof plug is provided on one side of the DC interface to prevent rainwater or impurities from penetrating into the DC interface.

[0014] Compared with the prior art, the utility model provides a power distribution cabinet capable of supplying power by direct current alone, which has the following beneficial effects:

[0015] The fan blades on the shaft are driven externally to rotate, and then air is sucked into the cabinet from the air inlet, and the air carrying some heat is discharged out of the cabinet from the air outlet. The cam on the shaft squeezes the pulley, causing the sealing plate on the connecting rod to slide back and forth along the inside of the delivery pipe, and then the pressure difference is used to draw cooling water into the delivery pipe, and a one-way valve is used to prevent the cooling water from flowing back. The coiled cooling pipe can cause the cooling water to better absorb the heat in the cabinet, and then use air cooling and water cooling to dissipate heat, which can effectively improve the heat dissipation effect of the distribution cabinet, and can also ensure that the internal temperature of the distribution cabinet remains within a stable range for a long time, thereby extending the service life of the electrical components in the distribution cabinet.

[0016] By transmitting AC power to the rectifier and under the joint action of the internal components of the rectifier, pulsating DC power is obtained, and then the pulsating DC power is transmitted to the filter, and the pulsating component is eliminated by the filter, so that the voltage can be output smoothly and close to the ideal DC power. Finally, the DC power can be output to the outside through the DC interface, so that this distribution cabinet has the function of supplying DC power independently, thereby ensuring a more stable and reliable power supply for key equipment. At the same time, it can also be quickly started as a backup power supply to provide uninterrupted power supply for important equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a structural schematic diagram of the cabinet door in the utility model when it is in an open state;

[0019] Figure 3 A schematic diagram of the structure inside the cabinet of the utility model;

[0020] Figure 4 This is an enlarged structural diagram of the mounting frame in the utility model;

[0021] Figure 5 It is a schematic diagram of the cutaway structure of the delivery pipe in the utility model;

[0022] Figure 6 For this utility model Figure 5 A magnified view of the structure at center.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Cabinet body; 2. Cabinet door; 3. Air inlet; 4. Air outlet; 5. Water inlet pipe; 6. Delivery pipe; 7. Cooling pipe; 8. Water outlet pipe; 9. One-way valve; 10. Rotating shaft; 11. Fan blades; 12. Cam; 13. Connecting rod; 14. Pulley; 15. Sealing plate; 16. Mounting bracket; 17. Rectifier; 18. Filter; 19. DC interface; 20. Waterproof plug; 21. Telescopic spring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model is further described in detail below based on the drawings and embodiments.

[0027] Example

[0028] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 as well as Figure 6As shown, in order to solve the problems mentioned in the technical solution, the embodiment of the present application provides a distribution cabinet that can be powered by direct current alone, including a cabinet body 1, a cabinet door 2 is hingedly connected to one side of the cabinet body 1, wherein the cabinet door 2 is equipped with a safety lock, thereby preventing unauthorized personnel from arbitrarily opening the cabinet door 2 and damaging the electrical components inside the cabinet body 1; an air inlet 3 is provided on the top outer wall of the cabinet body 1, an air outlet 4 is provided on the inner wall of one side of the cabinet body 1, and the air outlet 4 is located directly below the cabinet door 2, a rotating shaft 10 is provided on the top inner wall of the cabinet body 1, and a fan blade 11 is provided at the bottom end of the rotating shaft 10, wherein the rotating shaft 10 passes through the inner wall of the cabinet body 1 and is connected to an external drive so as to drive the fan blade 11 to deliver cold air to the cabinet body 1; a water inlet pipe 5 is provided on the inner wall of the cabinet body 1 on the side away from the cabinet door 2, a delivery pipe 6 is provided at one end of the water inlet pipe 5, a cooling pipe 7 is provided at one end of the delivery pipe 6, and a water outlet pipe 8 is provided at one end of the cooling pipe 7; a DC power supply component is provided on the inner wall of the cabinet body 1 on the side away from the cabinet door 2, which is used as a backup power supply for the cabinet body 1.

[0029] It should be noted that a filter is provided inside the air inlet 3 and the air outlet 4, and the fan blade 11 is located directly below the air inlet 3, which is used to prevent impurities in the external environment from entering the cabinet 1. The water inlet pipe 5 and the water outlet pipe 8 are both connected to the external water tank to facilitate the circulation of cooling water; at the same time, a cam 12 is provided on the outer surface of the rotating shaft 10, and a sealing plate 15 is slidably provided on the inner surface of the delivery pipe 6. A connecting rod 13 is provided on one side of the sealing plate 15, and a pulley 14 is provided at one end of the connecting rod 13. The pulley 14 is located on the outer surface of the delivery pipe 6, and the pulley 14 is in contact with the cam 12. A telescopic spring 21 is provided between the pulley 14 and the inner wall of the top of the cabinet 1, and the telescopic spring 21 is sleeved on the outer surface of the connecting rod 13. In order to promote the sealing plate 15 to return to its original position, the cooling water can be drawn into the delivery pipe 6 by using the pressure, and the cooling water is delivered to the cooling pipe 7 through the vertical delivery pipe 6 and using the gravitational potential energy of the cooling water. The cooling water is allowed to fully contact with the heat in the cabinet 1 through the winding cooling pipe 7, and finally discharged into the external water tank through the water outlet pipe 8, thereby taking away part of the heat in the cabinet 1; in addition, the delivery pipe 6 is L-shaped as a whole, and the sealing plate 15 is located inside the transverse pipe of the delivery pipe 6, which is used to reduce the pressure at the intersection of the water inlet pipe 5 and the delivery pipe 6. A one-way valve 9 is provided on the water inlet pipe 5 and the delivery pipe 6, and the one-way valves 9 on the two lead to opposite directions, which is used to prevent the cooling water from flowing back.

[0030] Further examples:

[0031] Please refer to Figures 1 to 4As shown, the DC power supply assembly includes a mounting frame 16, on which a rectifier 17 and a filter 18 are arranged in sequence, and a DC interface 19 is arranged on the outer wall of one side of the cabinet 1; the rectifier 17 and the filter 18 are electrically connected to each other, which are used to filter out noise and ripples in the circuit, and the filter 18 and the DC interface 19 are electrically connected to each other, which are used to output voltage more smoothly and ensure the stability and reliability of the DC circuit; a waterproof plug 20 is arranged on one side of the DC interface 19, which is used to prevent rainwater or impurities from penetrating into the DC interface 19.

[0032] It should be noted that the AC power in the cabinet 1 passes through the rectifier 17, and under the joint action of the internal components of the rectifier 17, pulsating DC power is obtained, and then the pulsating DC power passes through the filter 18. The filter 18 eliminates the pulsating component so that it can smooth the output voltage and be closer to the ideal DC power. Finally, the DC power is transmitted to the outside through the DC interface 19.

[0033] Everything in the above example works like this:

[0034] When direct current is needed during use, the alternating current in the cabinet 1 is first transmitted to the rectifier 17, and then the alternating current is converted into pulsating direct current under the joint action of the components inside the rectifier 17, and then the pulsating direct current is transmitted to the filter 18, and the pulsating component is eliminated by the filter 18, so that the voltage can be smoothly output and made close to the ideal direct current. Finally, the direct current can be output to the outside through the direct current interface 19, so that the power distribution cabinet has the function of supplying direct current independently, thereby ensuring a more stable and reliable power supply for key equipment, and can also be quickly started as a backup power supply to provide uninterrupted power supply for important equipment;

[0035] When the cabinet 1 needs to be cooled during its operation, the external drive is first started to drive the fan blades 11 on the rotating shaft 10 to rotate, and then air is sucked into the cabinet 1 from the air inlet 3, and the filter screen arranged on the air inlet 3 blocks impurities in the air to prevent the impurities from entering the cabinet 1 and affecting the normal operation of the internal electrical components. The inhaled air increases the air pressure inside the cabinet 1, and then is discharged to the outside of the cabinet 1 from the air outlet 4 arranged at the lower part of the cabinet 1. In this process, the inhaled air carries part of the heat and is discharged to the outside of the cabinet 1; in addition, the rotating shaft 10 rotates and drives the cam 12 thereon to rotate, and under the action of the telescopic spring 21, the cam 12 on the rotating shaft 10 rotates. Under the use, the pulley 14 that is squeezed and fitted with it moves back and forth laterally, so that the sealing plate 15 on the connecting rod 13 slides back and forth along the inside of the delivery pipe 6. In this process, the pressure difference is used to draw cooling water from the external water tank to the upper position of the delivery pipe 6 through the water inlet pipe 5, and the one-way valve 9 is arranged on the water inlet pipe 5 and the delivery pipe 6 to prevent the cooling water from flowing back. Subsequently, the cooling water flows into the cooling pipe 7 under the driving effect of pressure and the action of gravity, and the winding cooling pipe 7 can prolong the time that the cooling water stays inside the cabinet 1, and then it can better absorb the heat inside the cabinet 1, thereby improving the heat dissipation effect of the distribution cabinet.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power distribution cabinet capable of supplying direct current power independently, comprising a cabinet body (1), wherein a cabinet door (2) is hingedly connected to one side of the cabinet body (1), and characterized in that: An air inlet (3) is provided on the top outer wall of the cabinet body (1), an air outlet (4) is provided on the inner wall of one side of the cabinet body (1), and the air outlet (4) is located directly below the cabinet door (2). A rotating shaft (10) is provided on the top inner wall of the cabinet body (1), and a fan blade (11) is provided at the bottom end of the rotating shaft (10). A water inlet pipe (5) is provided on the inner wall of the cabinet body (1) away from the cabinet door (2), a delivery pipe (6) is provided at one end of the water inlet pipe (5), a cooling pipe (7) is provided at one end of the delivery pipe (6), and a water outlet pipe (8) is provided at one end of the cooling pipe (7); A DC power supply component is provided on the inner wall of the cabinet body (1) at a side away from the cabinet door (2), and is used as a backup power supply for the cabinet body (1).

2. A power distribution cabinet capable of independent DC power supply according to claim 1, characterized in that: The air inlet (3) and the air outlet (4) are both provided with filter screens, the fan blades (11) are located directly below the air inlet (3) and are used to prevent impurities in the external environment from entering the cabinet (1), and the water inlet pipe (5) and the water outlet pipe (8) are both connected to an external water tank.

3. A power distribution cabinet capable of supplying direct current power independently according to claim 2, characterized in that: A cam (12) is arranged on the outer surface of the rotating shaft (10), a sealing plate (15) is slidably arranged on the inner surface of the conveying pipe (6), a connecting rod (13) is arranged on one side of the sealing plate (15), a pulley (14) is arranged on one end of the connecting rod (13), the pulley (14) is located on the outer surface of the conveying pipe (6), and the pulley (14) is in contact with the cam (12).

4. A power distribution cabinet capable of supplying direct current power independently according to claim 3, characterized in that: The delivery pipe (6) is L-shaped as a whole, and the sealing plate (15) is located inside the transverse pipe of the delivery pipe (6), and is used to reduce the pressure at the intersection of the water inlet pipe (5) and the delivery pipe (6).

5. A power distribution cabinet capable of supplying direct current power independently according to claim 4, characterized in that: A telescopic spring (21) is provided between the pulley (14) and the inner wall of the top of the cabinet (1). The telescopic spring (21) is sleeved on the outer surface of the connecting rod (13) and is used to cause the sealing plate (15) to return to its original position.

6. A power distribution cabinet capable of supplying direct current power independently according to claim 5, characterized in that: Both the water inlet pipe (5) and the delivery pipe (6) are provided with a one-way valve (9), and the one-way valves (9) on the two are directed in opposite directions, so as to prevent the cooling water from flowing back.

7. A power distribution cabinet capable of supplying direct current power independently according to claim 1, characterized in that: The DC power supply assembly comprises a mounting frame (16), on which a rectifier (17) and a filter (18) are arranged in sequence, and a DC interface (19) is arranged on an outer wall of one side of the cabinet (1).

8. A power distribution cabinet capable of supplying direct current power independently according to claim 7, characterized in that: The rectifier (17) is electrically connected to the filter (18) for filtering out noise and ripples in the circuit, and the filter (18) is electrically connected to the DC interface (19) for outputting voltage more smoothly to ensure the stability and reliability of the DC circuit.

9. A power distribution cabinet capable of supplying direct current power independently according to claim 8, characterized in that: A waterproof plug (20) is provided on one side of the DC interface (19) for preventing rainwater or impurities from penetrating into the DC interface (19).

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