CN215733010U

CN215733010U - Heat radiation structure for power distribution cabinet

Info

Publication number: CN215733010U
Application number: CN202121185706.1U
Authority: CN
Inventors: 罗忠权; 杨关余
Original assignee: Luzhou Hongxing Electric Co ltd
Current assignee: Luzhou Hongxing Electric Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-02-01
Anticipated expiration: 2031-05-28

Abstract

The utility model relates to the field of heat dissipation of power distribution cabinets, and discloses a heat dissipation structure for a power distribution cabinet, which comprises a shell, wherein an axial flow fan is arranged on the shell, the shell is connected with an air supply pipe, the air supply pipe extends into the power distribution cabinet, the air supply pipe is connected with an exhaust pipe, two ends of the exhaust pipe are closed, and a plurality of exhaust holes are uniformly formed in the exhaust pipe along the length direction; the shell is internally provided with a coiled pipe, the water inlet end of the coiled pipe penetrates through the top of the shell and is communicated with a water source, the water outlet end of the coiled pipe is suspended in the shell, the plane of the coiled pipe is positioned between the axial flow fan and the air supply pipe and is vertical to the axial direction of the axial flow fan, the bottom of the shell is provided with a drain pipe, and the power distribution cabinet is provided with an air outlet at one side opposite to the shell. It can carry out lasting air-cooled cooling to the switch board effectively.

Description

Heat radiation structure for power distribution cabinet

Technical Field

The utility model relates to the field of heat dissipation of power distribution cabinets, in particular to a heat dissipation structure for a power distribution cabinet.

Background

The switch board is in the use, and inside can produce higher electric current, and the circuit heats up very fast, and self heat dissipation is difficult to satisfy the heat dissipation demand, influences the life of switch board, and there is great potential safety hazard in higher temperature. Therefore, utility model patent application No. CN202022016434.4 discloses a heat abstractor, it adopts the air-cooled mode to cool down the switch board, but it still has following problem: (1) in order to cool the introduced air, the air is directly contacted with a water body, the water body is used for cooling the air, and then the cooled air is introduced into the power distribution cabinet through the water absorption layer, so that the unavoidable moisture content in the air is higher, a larger potential safety hazard exists, and particularly after the water absorption layer reaches the water absorption upper limit; the introduced air easily and directly blows off and blows away the water flow left by the water distribution disc, so that the contact heat exchange efficiency of the air and the water body is low, and effective heat exchange cannot be realized; (2) the air outlet is not formed in the power distribution cabinet, so that the air pressure in the power distribution cabinet gradually rises, cold air is difficult to continuously introduce, the introduced cold air cannot effectively flow, and the heat exchange and cooling cannot be effectively carried out; (3) the air inlet casing directly contacts with the power distribution cabinet and is directly communicated through the air supply outlet, the temperature in the air supply casing and the temperature in the power distribution cabinet are basically the same, the temperature in the air supply casing is higher than normal, the introduced air directly exchanges heat with the air in the casing, and the heat exchange resource utilization rate is lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a heat dissipation structure for a power distribution cabinet, which can effectively and continuously cool the power distribution cabinet by air cooling.

The embodiment of the application is realized by the following technical scheme:

a heat dissipation structure for a power distribution cabinet comprises a shell, wherein an axial flow fan is arranged on the shell, the shell is connected with an air supply pipe, the air supply pipe extends into the power distribution cabinet, the air supply pipe is connected with an exhaust pipe, two ends of the exhaust pipe are sealed, and a plurality of exhaust holes are uniformly formed in the exhaust pipe along the length direction; the air distribution cabinet is characterized in that a coiled pipe is arranged in the shell, the water inlet end of the coiled pipe penetrates through the top of the shell and is communicated with a water source, the water outlet end of the coiled pipe is suspended in the shell, the plane of the coiled pipe is located between the axial flow fan and the air supply pipe and is perpendicular to the axial direction of the axial flow fan, a drain pipe is arranged at the bottom of the shell, and an air outlet is formed in one side, opposite to the shell, of the power distribution cabinet.

Further, the exhaust pipe is vertically arranged on one side, close to the shell, in the power distribution cabinet, and the exhaust direction of the exhaust hole is the width extending direction of the power distribution cabinet.

Furthermore, the coiled pipe is connected with a plurality of heat exchange fin plates, and the heat exchange fin plates are axially arranged in parallel with the axial flow fan.

Furthermore, a water inlet valve is arranged at the water inlet end of the coiled pipe, a water level sensor is arranged in the shell, the setting height of the water level sensor is lower than that of the water outlet end of the coiled pipe, and the water level sensor is connected with a control system of the water inlet valve.

Furthermore, the casing is equipped with the backwash pump, and the backwash pump even has the back flow, and back flow one end and the end intercommunication of intaking of coiled pipe, the back flow other end stretch into casing bottom inboard, casing bottom inboard is equipped with temperature sensor, and temperature sensor is connected with the control system of backwash pump and the control system of drain pipe respectively.

Furthermore, a first dust filter screen is arranged in the shell, is positioned between the coiled pipe and the blast pipe and covers the opening of the blast pipe.

Furthermore, the air outlet is provided with a second dust filtering net.

Furthermore, the first dust filtering net is detachably connected with the shell in an inserting mode, and the second dust filtering net is detachably connected with the air outlet of the power distribution cabinet in an inserting mode.

The heat dissipation structure for the power distribution cabinet has the beneficial effects that:

(1) the air flow passes through the coiled pipe and is in surface contact with the coiled pipe, so that heat exchange is carried out between the air flow and the water in the coiled pipe, the air is cooled, the air is prevented from being wetted due to direct contact between the air and the water, and the contact area between the air and the coiled pipe is increased by arranging the plane of the coiled pipe to be axially vertical to the axial flow fan; through setting up the blast pipe, in sending into the switch board with cooling air, through setting up the exhaust pipe, make the exhaust pipe both ends seal, set up a plurality of holes of airing exhaust on the exhaust pipe, in discharging the switch board after shunting the cooling air who introduces, set up the air outlet through being located the relative one side of casing at the switch board, optimize cooling air's heat transfer route. And, because the sectional area of blast pipe and exhaust pipe is less than the inside sectional area of casing, the air current that introduces blast pipe and exhaust pipe is accelerated obviously under the unchangeable circumstances of flow, and the compression reposition of redundant personnel through the hole of airing exhaust promotes the velocity of flow further again, effectively promotes the heat exchange efficiency in the switch board. Because casing and switch board only do not direct contact, only through the blast pipe intercommunication, effectively avoid the interior a large amount of backward flows of hot-air of switch board to get into in the casing, effectively maintain the operating temperature in the casing, avoid the condition that heat exchange resource utilization rate is on the low side.

(2) Be located the switch board one side that is close to the casing through setting up the exhaust pipe, shorten the length of blast pipe as far as possible, avoid the air in the blast pipe long time heat absorption, temperature when guaranteeing the cold air entering switch board, the direction of airing exhaust through setting up the hole of airing exhaust is the same with the width direction of switch board, make the one side that the casing was kept away from to the air current that the hole exhaust was followed the horizontal direction and is close to the one side flow direction of casing in the switch board, and finally directly discharge from the air outlet, optimize heat transfer route, prevent the air current backward flow and backheat.

(3) Through setting up the heat transfer fin, the surface area of increase coiled pipe to promote heat transfer area, through the direction that sets up the heat transfer fin, prevent that the heat transfer fin from making the air current slow down.

(4) By arranging the water inlet valve and the water level sensor, the water body introduced by the coiled pipe from the water source flows into the shell from the water outlet end of the coiled pipe to be accumulated, when the water body reaches the preset value of the water level sensor, the water level sensor transmits a signal to a control system of the water inlet valve to control the water inlet valve to be closed, so that the situation that the water level in the shell is too high and overflows from the air supply pipe to enter the power distribution cabinet is avoided.

(5) By arranging the reflux pump, the reflux pipe and the temperature sensor, when the water level in the shell reaches the preset value of the water level sensor, the water inlet valve is closed, the temperature sensor measures the temperature of the water body, when the water temperature is lower than the preset value, the drain pipe is closed, the reflux pump is started, the reflux pipe is utilized to lead the water body back, the water inlet end of the coiled pipe is led into the water inlet end of the coiled pipe again, the water flows along the coiled pipe again and exchanges heat with air, until the temperature sensor measures that the water temperature reaches or is higher than the preset value, the reflux pump is closed, the drain pipe is opened, the water body is discharged, and when the water level of the water body is lower than the preset value of the water level sensor, the water inlet valve is started and the water source is led into the water source again.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic view of a heat dissipation structure for a power distribution cabinet according to an embodiment of the present invention, which is installed in the power distribution cabinet;

fig. 2 is a schematic view of a serpentine tube of the heat dissipation structure for the power distribution cabinet according to the embodiment of the present invention.

Icon: 10-a housing; 11-an axial flow fan; 12-blast pipe; 13-an exhaust duct; 131-air exhaust holes; 14-a serpentine tube; 141-heat exchanging fins; 142-a water inlet valve; 15-a drain pipe; 16-a reflux pump; 161-return pipe; 17-a temperature sensor; 18-a water level sensor; 191-a first dust screen; 192-a second dust screen; 20-air outlet.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the product of the application is used, the description is only for convenience and simplicity, and the indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application.

In the description of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Examples

Referring to fig. 1 and fig. 2, the present embodiment provides a heat dissipation structure for a power distribution cabinet, which includes a housing 10, the housing 10 is provided with an axial flow fan 11, the housing 10 is connected with an air supply pipe 12, the air supply pipe 12 extends into the power distribution cabinet, the air supply pipe 12 is connected with an exhaust pipe 13, two ends of the exhaust pipe 13 are closed, and the exhaust pipe 13 is uniformly provided with a plurality of exhaust holes 131 along a length direction; a coiled pipe 14 is arranged in the shell 10, the water inlet end of the coiled pipe 14 penetrates through the top of the shell 10 to be communicated with a water source, the water outlet end of the coiled pipe 14 is suspended in the shell 10, the plane of the coiled pipe 14 is located between the axial flow fan 11 and the air supply pipe 12 and is perpendicular to the axial direction of the axial flow fan 11, a drain pipe 15 is installed at the bottom of the shell 10, and an air outlet 20 is formed in one side, opposite to the shell 10, of the power distribution cabinet. The external air is introduced into the shell 10 by arranging the shell 10 and the axial flow fan 11, the serpentine tube 14 is communicated with a water source to enable water to flow in the shell, when air flow passes through the serpentine tube 14, the air flow is in surface contact with the serpentine tube 14 to exchange heat with the water in the serpentine tube 14, the air is cooled, air wetting caused by direct contact of the air and the water can be avoided, and the contact area of the air and the serpentine tube 14 is increased by arranging the plane of the serpentine tube 14 to be vertical to the axial direction of the axial flow fan 11; through setting up blast pipe 12, send into the switch board with cooling air in, through setting up exhaust pipe 13, make exhaust pipe 13 both ends seal, set up a plurality of holes 131 of airing exhaust on exhaust pipe 13, in discharging the switch board after shunting the cooling air of introducing, through being located the relative one side of casing 10 at the switch board and set up air outlet 20, optimize cooling air's heat transfer route. Moreover, because the sectional areas of the air supply pipe 12 and the exhaust pipe 13 are smaller than the sectional area inside the shell 10, the flow speed of the air flow introduced into the air supply pipe 12 and the exhaust pipe 13 is obviously increased under the condition that the flow rate is not changed, and then the flow speed is further increased through the compression and flow distribution of the exhaust holes 131, so that the heat exchange efficiency in the power distribution cabinet is effectively improved. Because casing 10 and switch board only do not direct contact, only through blast pipe 12 intercommunication, effectively avoid the interior a large amount of backward flows of hot-air of switch board to get into casing 10 in, effectively maintain the operating temperature in the casing 10, avoid the condition that heat exchange resource utilization is low on the side.

In order to further optimize the heat exchange path in the power distribution cabinet, the exhaust duct 13 is vertically arranged on one side of the power distribution cabinet close to the shell 10, and the exhaust direction of the exhaust hole 131 is the width extending direction of the power distribution cabinet. Be located the switch board one side that is close to casing 10 through setting up exhaust pipe 13, shorten the length of blast pipe 12 as far as possible, avoid the air to absorb the heat in blast pipe 12 for a long time, temperature when guaranteeing the cold air entering switch board, the direction of airing exhaust through setting up exhaust hole 131 is the same with the width direction of switch board, make exhaust hole 131 discharge air flow along the horizontal direction from the switch board in be close to casing 10 one side flow direction keep away from casing 10 one side, and finally directly discharge from air outlet 20, optimize the heat transfer route, prevent that the air current from flowing back and backheat.

In order to further increase the heat exchange area between the air and the serpentine tube 14, the serpentine tube 14 is connected with a plurality of heat exchange fins 141, and the heat exchange fins 141 are arranged in parallel with the axial flow fan 11 in the axial direction. By providing the heat exchanging fins 141, the surface area of the serpentine tube 14 is increased to increase the heat exchanging area, and by setting the direction of the heat exchanging fins 141, the heat exchanging fins 141 are prevented from decelerating the air flow.

In order to prevent the water body entering the housing 10 from overflowing by overload, the inlet valve 142 is arranged at the water inlet end of the coiled pipe 14, the water level sensor 18 is arranged in the housing 10, the height of the water level sensor 18 is lower than that of the water outlet end of the coiled pipe 14, and the water level sensor 18 is connected with a control system of the inlet valve 142. By arranging the water inlet valve 142 and the water level sensor 18, the water body introduced by the coiled pipe 14 from the water source flows into the shell 10 from the water outlet end thereof to accumulate, when the water body reaches the preset value of the water level sensor 18, the water level sensor 18 transmits a signal to the control system of the water inlet valve 142 to control the water inlet valve 142 to be closed, so that the situation that the water level in the shell 10 is too high and overflows from the air supply pipe 12 to enter the power distribution cabinet is prevented.

In order to further improve the utilization rate of the cooling water body, the shell 10 is provided with a reflux pump 16, the reflux pump 16 is connected with a reflux pipe 161, one end of the reflux pipe 161 is communicated with the water inlet end of the coiled pipe 14, the other end of the reflux pipe 161 extends into the inner side of the bottom of the shell 10, the inner side of the bottom of the shell 10 is provided with a temperature sensor 17, and the temperature sensor 17 is respectively connected with a control system of the reflux pump 16 and a control system of the drain pipe 15. By arranging the reflux pump 16, the reflux pipe 161 and the temperature sensor 17, when the water level in the shell 10 reaches the preset value of the water level sensor 18, the water inlet valve 142 is closed, the temperature sensor 17 measures the temperature of the water body, when the water temperature is lower than the preset value, the water outlet pipe 15 is closed, the reflux pump 16 is started, the reflux pipe 161 is used for guiding the water body back, the water inlet end of the coiled pipe 14 is introduced again, the water body flows along the coiled pipe 14 again and exchanges heat with air, until the water temperature measured by the temperature sensor 17 reaches or is higher than the preset value, the reflux pump 16 is closed, the water outlet pipe 15 is opened, the water body is discharged, and when the water level is lower than the preset value of the water level sensor 18, the water inlet valve 142 is started and the water source is introduced again.

In order to prevent dust in the outside air from entering the power distribution cabinet, a first dust filter screen 191 is arranged in the casing 10, and the first dust filter screen 191 is located between the coiled pipe 14 and the blast pipe 12 and covers the opening of the blast pipe 12.

In order to prevent dust in the switch cabinet from directly discharging, the outlet 20 is provided with a second dust filter 192.

In order to facilitate cleaning of the first dust filter 191 and the second filter screen 192, the first dust filter 191 is detachably connected with the housing 10 in an inserting manner, and the second dust filter 192 is detachably connected with the power distribution cabinet at a position where the air outlet 20 is formed.

In summary, the utility model provides a heat dissipation structure for a power distribution cabinet, which is provided with a shell and an axial flow fan, introduces external air into the shell, is communicated with a water source by arranging a coiled pipe, and enables a water body to flow in the coiled pipe, when an air flow passes through the coiled pipe, the air flow is in contact with the surface of the coiled pipe, so that heat exchange is carried out with the water body in the coiled pipe, the air is cooled, air wetting caused by direct contact between the air and the water body can be avoided, and the contact area between the air and the coiled pipe is increased by arranging a plane of the coiled pipe to be axially vertical to the axial flow fan; through setting up the blast pipe, in sending into the switch board with cooling air, through setting up the exhaust pipe, make the exhaust pipe both ends seal, set up a plurality of holes of airing exhaust on the exhaust pipe, in discharging the switch board after shunting the cooling air who introduces, set up the air outlet through being located the relative one side of casing at the switch board, optimize cooling air's heat transfer route. And, because the sectional area of blast pipe and exhaust pipe is less than the inside sectional area of casing, the air current that introduces blast pipe and exhaust pipe is accelerated obviously under the unchangeable circumstances of flow, and the compression reposition of redundant personnel through the hole of airing exhaust promotes the velocity of flow further again, effectively promotes the heat exchange efficiency in the switch board. Because casing and switch board only do not direct contact, only through the blast pipe intercommunication, effectively avoid the interior a large amount of backward flows of hot-air of switch board to get into in the casing, effectively maintain the operating temperature in the casing, avoid the condition that heat exchange resource utilization rate is on the low side. Be located the switch board one side that is close to the casing through setting up the exhaust pipe, shorten the length of blast pipe as far as possible, avoid the air in the blast pipe long time heat absorption, temperature when guaranteeing the cold air entering switch board, the direction of airing exhaust through setting up the hole of airing exhaust is the same with the width direction of switch board, make the one side that the casing was kept away from to the air current that the hole exhaust was followed the horizontal direction and is close to the one side flow direction of casing in the switch board, and finally directly discharge from the air outlet, optimize heat transfer route, prevent the air current backward flow and backheat. Through setting up the heat transfer fin, the surface area of increase coiled pipe to promote heat transfer area, through the direction that sets up the heat transfer fin, prevent that the heat transfer fin from making the air current slow down. By arranging the water inlet valve and the water level sensor, the water body introduced by the coiled pipe from the water source flows into the shell from the water outlet end of the coiled pipe to be accumulated, when the water body reaches the preset value of the water level sensor, the water level sensor transmits a signal to a control system of the water inlet valve to control the water inlet valve to be closed, so that the situation that the water level in the shell is too high and overflows from the air supply pipe to enter the power distribution cabinet is avoided. By arranging the reflux pump, the reflux pipe and the temperature sensor, when the water level in the shell reaches the preset value of the water level sensor, the water inlet valve is closed, the temperature sensor measures the temperature of the water body, when the water temperature is lower than the preset value, the drain pipe is closed, the reflux pump is started, the reflux pipe is utilized to lead the water body back, the water inlet end of the coiled pipe is led into the water inlet end of the coiled pipe again, the water flows along the coiled pipe again and exchanges heat with air, until the temperature sensor measures that the water temperature reaches or is higher than the preset value, the reflux pump is closed, the drain pipe is opened, the water body is discharged, and when the water level of the water body is lower than the preset value of the water level sensor, the water inlet valve is started and the water source is led into the water source again.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A heat dissipation structure for a power distribution cabinet comprises a shell (10), wherein an axial flow fan (11) is mounted on the shell (10), and the heat dissipation structure is characterized in that the shell (10) is connected with an air supply pipe (12), the air supply pipe (12) extends into the power distribution cabinet, the air supply pipe (12) is connected with an exhaust pipe (13), two ends of the exhaust pipe (13) are sealed, and the exhaust pipe (13) is uniformly provided with a plurality of exhaust holes (131) along the length direction;

the air distribution cabinet is characterized in that a coiled pipe (14) is arranged in the shell (10), the water inlet end of the coiled pipe (14) penetrates through the top of the shell (10) to be communicated with a water source, the water outlet end of the coiled pipe (14) is suspended in the shell (10), the plane where the coiled pipe (14) is located between the axial flow fan (11) and the air supply pipe (12) and is perpendicular to the axial direction of the axial flow fan (11), a drain pipe (15) is installed at the bottom of the shell (10), and an air outlet (20) is formed in one side, opposite to the shell (10), of the power distribution cabinet.

2. The heat dissipation structure for the power distribution cabinet according to claim 1, wherein the exhaust duct (13) is vertically disposed at one side of the power distribution cabinet close to the housing (10), and an exhaust direction of the exhaust hole (131) is a width extension direction of the power distribution cabinet.

3. The heat dissipation structure for the power distribution cabinet according to claim 1, wherein the serpentine tube (14) is connected with a plurality of heat exchange fins (141), and the heat exchange fins (141) are axially arranged in parallel with the axial flow fan (11).

4. The heat dissipation structure for power distribution cabinets according to claim 1, characterized in that the inlet end of the coiled pipe (14) is provided with an inlet valve (142), the housing (10) is provided with a water level sensor (18), the water level sensor (18) is arranged at a lower height than the outlet end of the coiled pipe (14), and the water level sensor (18) is connected with a control system of the inlet valve (142).

5. The heat dissipation structure for the power distribution cabinet according to claim 4, wherein the casing (10) is provided with a reflux pump (16), the reflux pump (16) is connected with a reflux pipe (161), one end of the reflux pipe (161) is communicated with the water inlet end of the coiled pipe (14), the other end of the reflux pipe (161) extends into the inner side of the bottom of the casing (10), the inner side of the bottom of the casing (10) is provided with a temperature sensor (17), and the temperature sensor (17) is respectively connected with a control system of the reflux pump (16) and a control system of the drain pipe (15).

6. The heat dissipation structure for the power distribution cabinet according to claim 1, wherein a first dust filter screen (191) is disposed in the housing (10), and the first dust filter screen (191) is located between the serpentine pipe (14) and the blast pipe (12) and covers a mouth of the blast pipe (12).

7. The heat dissipation structure for power distribution cabinets of claim 6, wherein said air outlet (20) is equipped with a second dust screen (192).

8. The heat dissipation structure for the power distribution cabinet according to claim 7, wherein the first dust filter (191) is detachably connected to the housing (10), and the second dust filter (192) is detachably connected to the power distribution cabinet where the air outlet (20) is formed.