CN116528557A - A cooling method and device for a DC power supply cabinet - Google Patents

Abstract

The invention relates to the technical field of direct-current power supply cabinet heat dissipation, and discloses a direct-current power supply cabinet heat dissipation method and device, wherein a heat dissipation device M is arranged on a direct-current power supply cabinet, so that an air inlet part is positioned at the top of the direct-current power supply cabinet, and an air outlet part is positioned on the cabinet wall of the direct-current power supply cabinet; when the air inlet part works, outside cold air is filtered by the filter element and then is transported into the direct-current power supply cabinet, and the inversion module in the direct-current power supply cabinet is cooled by air; the cooled hot air pushes away the air outlet component under the pressure effect and is discharged; when the air inlet part stops working, the air outlet part is not automatically reset under the action of air pressure. According to the direct-current power supply cabinet heat dissipation method and device, dust adhered to the outer side of the filter screen through filtration is automatically cleaned, manual cleaning is not needed, and the workload of workers is reduced.

Description

A cooling method and device for a DC power supply cabinet

technical field

The invention relates to the technical field of heat dissipation of a DC power supply cabinet, in particular to a heat dissipation method and device for a DC power supply cabinet.

Background technique

The most basic function of the DC power supply cabinet is to configure the power supply, and put all the power supplies you need in a unified cabinet, which is easier to organize and maintain. This kind of cabinet is also called a power cabinet. The inverter circuit in the DC power supply cabinet corresponds to the rectification circuit. Converting DC power into AC power is called inverter. The inverter process is an essential core step in the DC power cabinet. Because the power of the inverter module in the inverter module stage is very The inverter module needs to be dissipated due to large size. At present, when cooling the DC power supply cabinet, a fan is usually directly installed on the cabinet wall. The fan transports the cold air from the outside to the DC power supply cabinet. The inverter module is air-cooled and heat-dissipated. In order to prevent the dust in the air from adhering to the inverter module, a filter is generally installed in the air inlet hole. However, as the use time increases, the dust adhered to the outside of the filter will continue to The increase will block the mesh of the filter screen, thereby affecting the air passing efficiency on the filter screen, and then affecting the heat dissipation effect of the inverter module. At this time, manual cleaning is required, which increases the workload of the staff.

Contents of the invention

The purpose of this section is to outline some aspects of embodiments of the invention and briefly describe some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and titles of this application, to avoid obscuring the purpose of this section, abstract and titles, and such simplifications or omissions should not be used to limit the scope of the invention.

In view of the problem that the existing cooling method and device for DC power supply cabinets have the problem that the filter screen will be clogged with the increase of use time, manual cleaning is required, which increases the workload, and the present invention is proposed.

Therefore, the object of the present invention is to provide a cooling method and device for a DC power supply cabinet. The purpose is to press out part of the air in the DC power supply cabinet when the cold air is stopped, and the compressed air is reversed. Flush the filter element and automatically clean the filter element without the need for staff to clean it, reducing the workload of the staff.

In order to solve the above technical problems, the present invention provides the following technical solutions: a cooling method for a DC power supply cabinet, comprising, by installing the cooling device M on the DC power supply cabinet, so that the air intake part thereof is at the top of the DC power supply cabinet, and the air outlet part is at the top of the DC power supply cabinet. On the cabinet wall of the DC power supply cabinet; when the air intake part is working, the cold air from the outside is filtered through the filter, and then transported to the DC power supply cabinet, and the inverter module in the DC power supply cabinet is air-cooled to cool down; the cooled hot air Push the air outlet part under pressure and discharge it; when the air intake part stops working, the air outlet part is no longer affected by the air pressure and automatically resets, pushing part of the air into the DC power cabinet, and the air entering the DC power cabinet is reversed Flush the filter element, when this part of the air rushes out of the air intake part, it rushes out from the inner side of the filter screen, and washes down the dust adhered to the outer side of the filter element.

As a preferred solution of the heat dissipation method for the DC power supply cabinet of the present invention, wherein: the air outlet end of the air intake component can swing back and forth to continuously adjust its position, so that the surface of the inverter module can evenly receive the coldest temperature. Air.

As a preferred solution of the heat dissipation method for the DC power supply cabinet of the present invention, wherein: the swing process of the air outlet end of the air intake component is intermittent, swings for a certain distance, stays in place for a period of time, and then continues to swing, so reciprocating.

The beneficial effect of this method is that the inverter module in the DC power supply cabinet is radiated through the cooling device, and the air generated by heat dissipation is normally discharged out of the DC power supply cabinet. Part of the air inside is extruded, and the extruded air washes the filter element in reverse, and the filter element is automatically cleaned without the need for staff to clean it, which reduces the workload of the staff.

Another object of the present invention is to provide a cooling device for a DC power supply cabinet, which aims to automatically clean the dust adhering to the outer side of the filter without manual cleaning and reduce the workload of the staff.

In order to solve the above technical problems, the present invention provides the following technical solutions: a cooling device for a DC power supply cabinet, including a cooling device M, which includes; a power supply cabinet unit, including a cabinet body, and an inverter module arranged in the cabinet; a heat dissipation unit, It includes the air intake part set on the top of the cabinet and the air outlet part set on the side of the cabinet.

As a preferred solution for the cooling device of the DC power supply cabinet in the present invention, wherein: the air intake component includes an air intake hood arranged on the top of the cabinet, an air inlet arranged on the air inlet hood, an air inlet arranged on the air inlet The filter screen on the top, the air inlet on the top of the cabinet, the motor on the inner cover wall of the air intake hood, the drive shaft on the output end of the motor, and the fan blades on the end of the drive shaft, and the fan blades The rotation is arranged in the air inlet.

As a preferred solution of the cooling device for the DC power supply cabinet of the present invention, wherein: the air outlet component includes an inverted "L"-shaped air outlet pipe arranged on one side of the cabinet body, a network pipe arranged at the end of the air outlet pipe, a sealing slide The sealing plug arranged on the inner pipe wall of the air outlet pipe, the guide assembly arranged on the air outlet pipe, the transmission rope arranged on the sealing plug, the counterweight arranged at the other end of the transmission rope, and the counterweight is arranged outside the air outlet pipe , and a limit assembly arranged on the counterweight.

As a preferred solution of the cooling device for the DC power supply cabinet of the present invention, wherein: the guide assembly includes a guide hole arranged on the wall of the air outlet pipe, and guide wheels respectively arranged on the outer pipe wall and the inner pipe wall of the air outlet pipe , and the two guide wheels are arranged symmetrically about the guide hole, and the transmission rope passes through the guide hole and is set around the two guide wheels.

As a preferred solution of the cooling device for the DC power supply cabinet of the present invention, a sealing ring is connected to the hole wall of the guide hole, and the transmission rope is in sealing and sliding connection with the inner wall of the sealing ring.

As a preferred solution of the cooling device of the DC power supply cabinet in the present invention, wherein: the limiting component includes a limiting groove plate arranged on the outer pipe wall of the air outlet pipe, a limiting block arranged on the counterweight, and The limit block is slidably connected in the limit groove plate, and the limit rod arranged in the limit groove plate, the limit rod is set through the limit block, and the limit block is slidably connected on the rod wall of the limit rod .

As a preferred solution of the cooling device for the DC power supply cabinet of the present invention, it includes a swinging part, the swinging part includes a ball-holding chamber arranged on the air inlet, the ball-guiding gas arranged in the ball-holding chamber is rotated, and the The air guide hole on the top of the guiding ball, the air outlet cover set on the bottom of the guiding ball, the swing frame set on the top of the guiding ball, the output shaft rotatingly set on the inner cover wall of the air intake cover, the swinging set on the end of the output shaft Bar, the clamping wheel arranged on the swing bar, and the clamping wheel is rollingly connected to the inner frame wall of the swing frame, and the reduction transmission assembly arranged on the output shaft and the drive shaft.

Beneficial effects of the present invention: when the motor is working, external cold air enters the cabinet, air-cools the electrical equipment such as the inverter module to cool down, and pushes the sealing plug into the network management, so that the air entering the network management can be discharged normally ; When the motor stops working, the sealing plug is reset in the air outlet pipe, which will press part of the air in the air outlet pipe into the cabinet, and the part of the air entering the cabinet will rush out from the inside of the filter screen, and will adhere to the The dust on the outer side of the filter screen is washed down, and the dust adhered to the outer side of the filter screen is automatically cleaned without manual cleaning, which reduces the workload of the staff.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort. in:

FIG. 1 is a schematic diagram of a cooling device for a DC power supply cabinet of the present invention.

Fig. 2 is a schematic diagram of the structure of the air intake part of the cooling device of the DC power supply cabinet of the present invention.

Fig. 3 is a structural schematic diagram of the air outlet part of the cooling device of the DC power supply cabinet of the present invention.

Fig. 4 is a schematic structural diagram of the swinging part of the cooling device of the DC power supply cabinet according to the present invention.

Fig. 5 is a schematic structural diagram of the deceleration transmission assembly of the cooling device of the DC power supply cabinet of the present invention.

Fig. 6 is a cross-sectional view of the cooling device of the DC power supply cabinet of the present invention.

Detailed ways

In order to make the above objects, features and advantages of the present invention more obvious and comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

Second, "one embodiment" or "an embodiment" referred to herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. "In one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

Secondly, the present invention is described in detail in conjunction with schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional view showing the structure of the device will not be partially enlarged according to the general scale, and the schematic diagram is only an example, and it should not be used here. Limit the scope of protection of the present invention. In addition, the three-dimensional space dimensions of length, width and depth should be included in actual production.

Example 1

As the first embodiment of the present invention, a cooling method for a DC power supply cabinet is provided, including:

S1: By installing the cooling device M on the DC power cabinet, the air intake part is on the top of the DC power cabinet, and the air outlet part is on the cabinet wall of the DC power cabinet;

S2: When the air intake part is working, the external cold air is filtered through the filter, and then transported to the DC power supply cabinet, and the inverter module in the DC power supply cabinet is air-cooled to cool down;

S3: The cooled hot air pushes away the air outlet part under the action of pressure and discharges it;

S4: When the air intake part stops working, the air outlet part is no longer affected by the air pressure and automatically resets, pushing part of the air into the DC power supply cabinet, and then the air entering the DC power supply cabinet flushes the filter in reverse, and this part of the air rushes out When the air intake part, it rushes out from the inner side of the filter screen, and washes down the dust adhered to the outer side of the filter element.

During use, the air intake part of the cooling device transports the filtered air to the DC power cabinet to cool down the inverter module, and the air carrying heat is discharged through the air outlet part. When the air intake part stops working, the air outlet part automatically Reset, press part of the air in the air outlet part into the DC power supply cabinet, and the air that is pressed into the DC power supply cabinet enters the intake part again, and automatically flushes the filter in reverse.

Among them, the air outlet end of the air intake part can swing back and forth, constantly adjusting its position, so that the surface of the inverter module can evenly receive the cold air with the lowest temperature; the swing process of the air outlet end of the air intake part is intermittent, and swings for a certain distance , stay in place for a while, then continue to swing, and so on.

Example 2

Referring to Fig. 1-3, it is the second embodiment of the present invention, and this embodiment is used for explaining heat dissipation device M, and this device comprises, power supply cabinet unit 100, comprises cabinet body 101, and the cabinet body 101 is in a sealed state as a whole when closed, And the inverter module 102 and other electrical equipment installed in the cabinet 101; the heat dissipation unit 200 includes the air intake part 201 installed on the top of the cabinet 101 and the air outlet part 202 installed on the side of the cabinet 101.

The air intake part 201 comprises the air intake cover 201a that is connected on the top of the cabinet body 101, the air intake hole 201b that is offered on the air intake cover 201a, the filter screen 201c that is connected on the air intake hole 201b, the inlet that is opened on the top of the cabinet body 101 The air port 201d, the motor 201e connected to the inner cover wall of the air intake cover 201a, the drive shaft 201f connected to the output end of the motor 201e, and the fan blade 201g connected to the end of the drive shaft 201f, and the fan blade 201g is rotatably arranged on the inlet Inside the air hole 201b.

The air outlet part 202 includes an air outlet pipe 202a connected to an inverted "L" shape on one side of the cabinet body 101, a network pipe 202b connected to the other end of the air outlet pipe 202a, a sealing plug 202c that is sealed and slidably connected to the inner pipe wall of the air outlet pipe 202a, and a set The guide assembly 202d on the air outlet pipe 202a, the transmission rope 202e arranged on the sealing plug 202c, the counterweight 202f connected to the other end of the transmission rope 202e, and the counterweight 202f is movably arranged outside the air outlet pipe 202a, and arranged on The limit assembly 202g on the counterweight 202f.

During use, when the motor 201e is working, the drive shaft 201f drives the fan blade 201g to rotate in the air inlet 201b, and the outside air enters the air inlet cover 201a after being filtered by the filter screen 201c, and then passes through the air inlet 201d Entering the cabinet body 101, the inverter module 102 in the cabinet body 101 is heat-exchanged and cooled, and the air carrying heat is poured into the air outlet pipe 202a. The pressure exerted by the internal air on the sealing plug 202c also increases accordingly, pushing the sealing plug 202c to slide downward in the air outlet pipe 202a. The weight 202f is raised until the sealing plug 202c moves into the network pipe 202b, and the air in the air outlet pipe 202a is discharged through the mesh holes on the pipe wall of the network pipe 202b; Thrust, under the weight of the counterweight 202f, the counterweight 202f moves downward, and pulls the sealing plug 202c to move upward and reset through the transmission rope 202e. When the sealing plug 202c slides upward in the air outlet pipe 202a, the air outlet pipe 202a will Hollow air pours into the cabinet body 101, and the air that enters the cabinet body 101 enters the air intake cover 201 through the air inlet 201d, and then is discharged through the air inlet hole 201b, and the air rushes out of the air inlet hole 201b, from the filter The inner side of the net 201c is flushed out, and the dust adhered to the outer side of the filter net 201c is washed down, and the filter net 201c is automatically cleaned without manual cleaning, which reduces the workload of the staff.

Compared with Embodiment 1, further, a support assembly 202h is installed on the shaft wall of the drive shaft 201f, and the support assembly 202h includes a bearing seat 202h-1 sleeved on the shaft wall of the drive shaft 201f, and the outer wall of the bearing seat 202h-1 The support rod 202h-2 is symmetrically connected on the top, and the other end of the support rod 202h-2 is connected on the inner cover wall of the air intake cover 201a, and the drive shaft 201f is supported by the bearing seat 202h-1, which improves the speed of the drive shaft 201f when it rotates. stability.

Compared with Embodiment 1, further, the guide assembly 202d includes a guide hole 202d-1 opened on the pipe wall of the air outlet pipe 202a, and guide wheels 202d-2 respectively installed on the outer pipe wall and inner pipe wall of the air outlet pipe 202a, And the two guide wheels 202d-2 are arranged symmetrically with respect to the guide hole 202d-1, and the transmission rope 202e passes through the guide hole 202d-1 and is set around the two guide wheels 202d-2, through which the two guide wheels 202d-2 drive The direction of motion of the rope 202e is guided.

Compared with Embodiment 1, further, a sealing ring 202d-3 is connected to the hole wall of the guide hole 202d-1, and the transmission rope 202e is in sealing and sliding connection with the inner ring wall of the sealing ring 202d-3, through which the sealing ring 202d- 3 Improve the sealing between the guide hole 202d-1 and the transmission rope 202e.

Compared with Embodiment 1, further, the limiting assembly 202g includes a limiting groove plate 202g-1 connected to the outer pipe wall of the air outlet pipe 202a, a limiting block 202g-2 connected to the counterweight 202f, and limiting The positioning block 202g-2 is slidably connected in the limiting groove plate 202g-1, and the limiting rod 202g-3 is arranged in the limiting groove plate 202g-1, and the limiting rod 202g-3 is set through the limiting block 202g-2 , and the limit block 202g-2 is slidably connected on the rod wall of the limit rod 202g-3, because the limit block 202g-2 can only slide on the limit rod 202g-3, so the limit block 202g-2 and The movement direction of the counterweight 202f is limited to make its movement more stable.

All the other structures are identical to those of Example 1.

Example 3

Referring to Figures 1-4, it is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: it includes a swinging part 203, and the swinging part 203 includes a ball holding chamber 203a connected to the air inlet 201d , rotate the guiding ball 203b arranged in the ball holding chamber 203a, the ball holding chamber 203a matches the guiding ball 203b, the air guiding hole 203c arranged on the top of the guiding ball 203b, the air outlet cover 203d arranged at the bottom of the guiding ball 203b , the inner wall of the ball holding chamber 203a is connected with a rubber pad to ensure that the ball holding chamber 203a and the guiding ball 203b are sealed and rotated, while increasing the frictional resistance of the guiding ball 203b when rotating in the ball holding chamber 203a, so as to avoid the frictional resistance of the guiding ball. 203b resets and moves under the gravity of the air outlet cover 203d. The swing frame 203e connected to the top of the guide ball 203b, the output shaft 203f connected to the inner cover wall of the air intake cover 201a through ball bearings, is arranged on the output shaft 203f. The swing bar 203g at the end, the clamping wheel 203h arranged on the swing bar 203g, and the clamping wheel 203h is rollingly connected to the inner frame wall of the swing frame 203e, and the deceleration transmission set on the output shaft 203f and the drive shaft 201f The component 203i, the deceleration transmission component 203i can be a reducer, which reduces the rotational speed transmitted by the drive shaft 201f and transmits it to the output shaft 203f to drive the output shaft 203f to rotate.

During use, the cold air in the intake cover 201a enters the guide ball 203b through the air guide hole 203c, and then sprays out through the air outlet cover 203d. When the drive shaft 201f rotates, after the deceleration transmission of the deceleration transmission assembly 203i, it drives The output shaft 203f and the swing bar 203g slowly rotate, and when the swing bar 203g rotates, the clamping wheel 203h is driven to roll in the swing frame 203e, and the swing frame 203e, the guide ball 203b and the air outlet cover 203d are driven to take the center point of the ball holding chamber 203a as The center swings back and forth, spraying cold air on the surface of the inverter module 102, ensuring that the surface of the inverter module 102 can evenly receive the cold air with the lowest temperature, and improving the heat dissipation effect of the DC power supply cabinet.

All the other structures are identical to those of Embodiment 2.

Example 4

Referring to Figures 1-6, it is the fourth embodiment of the present invention, which is different from the third embodiment in that: the reduction transmission assembly 203i includes a reduction gear that is rotatably connected to the inner housing wall of the air intake housing 201a through a ball bearing. Rod 203i-1, large gear 203i-2 and special-shaped gear 203i-3 connected to deceleration rod 203i-1, pinion 203i-4 sleeved on the shaft wall of drive shaft 201f, and sleeved on output shaft 203f The driving gear 203i-5 on the wall, the large gear 203i-2 and the small gear 203i-4 mesh, the gear ratio of the large gear 203i-2 and the small gear 203i-4 is 5:1, and the special-shaped gear 203i-3 includes a smooth surface and tooth block, tooth block and driving gear 203i-5 are meshed, and the gear ratio of special-shaped gear 203i-3 and driving gear 203i-5 is 15:1, and special-shaped gear 203i-3 rotates a complete circle, and its surface tooth block only contacts with The driving gear 203i-5 meshes once, and the driving gear 203i-5 only rotates by one tooth pitch.

During use, the driving shaft 201f drives the pinion gear 203i-4 to rotate a full circle, and the large gear 203i-2 only drives the special-shaped gear 203i-3 and the deceleration lever 203i-1 to rotate one-fifth of the time due to the force of the pinion gear 203i-4 When the special-shaped gear 203i-3 rotates fifteen times, the drive gear 203i-5 drives the output shaft 203f to rotate one circle, and the clamping wheel 203h rolls back and forth on the inner frame wall of the swing frame 203e, so that the air outlet cover 203d performs a reciprocating swing, and since the special-shaped gear 203i-3 and the driving gear 203i-5 are intermittently meshed for transmission, this will cause the air outlet cover 203d to swing for a short distance, and then stay in place for a period of time before continuing Swinging and reciprocating in this way, when the air outlet cover 203d stays, the cold air blown out can better contact the surface of the inverter module 102 and other electrical equipment, thereby improving the heat dissipation effect.

All the other structures are identical to those of Embodiment 3.

It is important to note that the construction and arrangement of the application, shown in the various exemplary embodiments, are illustrative only. Although only a few embodiments have been described in detail in this disclosure, it should be readily apparent to those who review this disclosure that many modifications are possible without materially departing from the novel teachings and advantages of the subject matter described in this application. are possible (e.g., variations in dimensions, dimensions, structures, shapes and proportions of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.). For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be inverted or otherwise varied, and the nature or number or positions of discrete elements may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operation and arrangement of the exemplary embodiments without departing from the scope of the invention. Accordingly, the invention is not limited to a particular embodiment, but extends to various modifications still falling within the scope of the appended claims.

Moreover, in order to provide a concise description of exemplary embodiments, not all features of an actual embodiment (i.e., those features not relevant to the best mode presently considered for carrying out the invention, or to practicing the invention feature).

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation, although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (10)

1. A heat dissipation method of a direct current power supply cabinet is characterized in that: comprising the steps of (a) a step of,

the heat dissipation device (M) is arranged on the direct-current power supply cabinet, so that an air inlet part is positioned at the top of the direct-current power supply cabinet, and an air outlet part is positioned on the cabinet wall of the direct-current power supply cabinet;

when the air inlet part works, outside cold air is filtered by the filter element and then is transported into the direct-current power supply cabinet, and the inversion module in the direct-current power supply cabinet is cooled by air;

the cooled hot air pushes away the air outlet component under the pressure effect and is discharged;

when the air inlet part stops working, the air outlet part is not automatically reset under the action of air pressure, part of air is pushed into the direct-current power supply cabinet, the air entering the direct-current power supply cabinet is reversely flushed out of the filter element, and when the part of air is flushed out of the air inlet part, the part of air is flushed out of the inner side of the filter screen, and dust adhered to the outer side of the filter element is flushed down.

2. The direct current power supply cabinet heat dissipation method according to claim 1, wherein: the air outlet end of the air inlet component can swing back and forth, and the position of the air outlet end can be adjusted continuously, so that the surface of the inversion module can uniformly receive cold air with the lowest temperature.

3. The direct current power supply cabinet heat dissipation method according to claim 2, wherein: the swing process of the air outlet end of the air inlet part is intermittent, the air outlet end swings for a distance, stays in place for a period of time, continues to swing, and is reciprocated.

4. The utility model provides a direct current power supply cabinet heat abstractor which characterized in that: a heat sink (M) comprising a device according to claims 1-3, comprising;

a power supply cabinet unit (100) comprising a cabinet body (101) and an inversion module (102) arranged in the cabinet body (101);

the heat radiation unit (200) comprises an air inlet component (201) arranged at the top of the cabinet body (101) and an air outlet component (202) arranged at one side of the cabinet body (101).

5. The direct current power supply cabinet heat dissipation device according to claim 4, wherein: the air inlet component (201) comprises an air inlet cover (201 a) arranged at the top of the cabinet body (101), an air inlet hole (201 b) arranged on the air inlet cover (201 a), a filter screen (201 c) arranged on the air inlet hole (201 b), an air inlet (201 d) arranged at the top of the cabinet body (101), a motor (201 e) arranged on the inner cover wall of the air inlet cover (201 a), a driving shaft (201 f) arranged at the output end of the motor (201 e) and fan blades (201 g) arranged at the end part of the driving shaft (201 f), wherein the fan blades (201 g) are rotatably arranged in the air inlet hole (201 b).

6. The direct current power supply cabinet heat dissipation device according to claim 5, wherein: the air outlet component (202) comprises an air outlet pipe (202 a) arranged on one side of the cabinet body (101) and in an inverted L shape, a net pipe (202 b) arranged at the end part of the air outlet pipe (202 a), a sealing plug (202 c) arranged on the inner pipe wall of the air outlet pipe (202 a) in a sealing sliding manner, a guide assembly (202 d) arranged on the air outlet pipe (202 a), a driving rope (202 e) arranged on the sealing plug (202 c), a balancing weight (202 f) arranged at the other end of the driving rope (202 e), and a limiting assembly (202 g) arranged outside the air outlet pipe (202 a) and on the balancing weight (202 f).

7. The direct current power supply cabinet heat dissipation device according to claim 6, wherein: the guide assembly (202 d) comprises a guide hole (202 d-1) formed in the pipe wall of the air outlet pipe (202 a), and guide wheels (202 d-2) respectively formed in the outer pipe wall and the inner pipe wall of the air outlet pipe (202 a), wherein the two guide wheels (202 d-2) are symmetrically arranged about the guide hole (202 d-1), and a transmission rope (202 e) penetrates through the guide hole (202 d-1) and bypasses the two guide wheels (202 d-2).

8. The direct current power supply cabinet heat dissipation device according to claim 7, wherein: the hole wall of the guide hole (202 d-1) is connected with a sealing ring (202 d-3), and the driving rope (202 e) is in sealing sliding connection with the inner ring wall of the sealing ring (202 d-3).

9. The direct current power supply cabinet heat dissipating apparatus according to claim 6 or 8, wherein: the limiting assembly (202 g) comprises a limiting groove plate (202 g-1) arranged on the outer pipe wall of the air outlet pipe (202 a), a limiting block (202 g-2) arranged on the balancing weight (202 f), the limiting block (202 g-2) is slidably connected into the limiting groove plate (202 g-1) and a limiting rod (202 g-3) arranged in the limiting groove plate (202 g-1), the limiting rod (202 g-3) penetrates through the limiting block (202 g-2), and the limiting block (202 g-2) is slidably connected onto the rod wall of the limiting rod (202 g-3).

10. The direct current power supply cabinet heat dissipation device according to claim 9, wherein: still include swing part (203), swing part (203) are including setting up ball holding chamber (203 a) on air inlet (201 d), rotate air guide ball (203 b) that sets up in ball holding chamber (203 a), set up air vent (203 c) at air guide ball (203 b) top, set up in air outlet cover (203 d) of air guide ball (203 b) bottom, set up swing frame (203 e) at air guide ball (203 b) top, rotate output shaft (203 f) on the inner cover wall of air inlet cover (201 a), swing strip (203 g) of setting up in output shaft (203 f) tip, clamping wheel (203 h) of setting up on swing strip (203 g), and clamping wheel (203 h) roll connection is on the inside casing wall of swing frame (203 e), and set up speed reduction drive assembly (203 i) on output shaft (203 f) and drive shaft (201 f).