Safety protection high and low voltage distribution cabinet

Abstract

The present invention relates to the technical field of power distribution cabinet equipment, and specifically to a safety protection high and low voltage power distribution cabinet, comprising a base, a shell being arranged above the base, a cooling module for reducing the temperature in the shell being arranged in the base, the cooling module comprising a circulation pipe group, a circulation medium being arranged in the circulation pipe group, the circulation pipe group comprising a heat absorption pipe arranged in the shell and a heat dissipation pipe arranged below the base, a circulation power source being arranged between the heat absorption pipe and the heat dissipation pipe, heat absorption and heat dissipation in the shell being achieved by circulating the medium between the heat absorption pipe and the heat dissipation pipe, thereby improving the overall heat dissipation effect, utilizing geothermal energy to recover excess heat, eliminating the need for excess heat exchange equipment, simplifying the heat dissipation system equipment, and ensuring that the heat dissipation effect is not reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinet equipment, and in particular to a high and low voltage power distribution cabinet with higher safety in use. Background Art

[0002] High and low voltage distribution cabinets are distribution equipment used for power distribution, control, metering and cable connection in power supply systems. Generally, power supply bureaus and substations use high voltage switchgear, which is then stepped down by the transformer and led to the low voltage side to the low voltage distribution cabinet. The low voltage distribution cabinet is then led to the distribution boards, control boxes and switch boxes of various power users. The equipment in the cabinet is a distribution device that is assembled into one by some switches, circuit breakers, fuses, buttons, indicator lights, meters, wires and other protective devices to meet the design functional requirements.

[0003] Chinese patent application number: 2017213617687 discloses a high- and low-voltage power distribution cabinet for efficient cooling. The key points of its technical solution are that it includes a cabinet and a cooling device. The cabinet includes an outer shell and an inner shell. The inner shell is arranged inside the outer shell. An insulation layer is provided between the outer shell and the inner shell. The cooling device includes a cooling pipe, a heat exchanger and a circulating pump. A through hole connecting the inner cavity and the outside is provided on the cabinet. The cooling pipe is S-shaped and evenly distributed on the side wall of the inner shell. The two ports of the cooling pipe pass through the through hole and are placed on the outside of the outer shell. One end of the cooling pipe is connected to the inlet of the circulating pump and the other end is connected to the outlet of the heat exchanger. The outlet of the circulating pump is connected to the inlet of the heat exchanger. The cooling pipe is filled with coolant. Although this device can effectively dissipate heat, it requires separate heat exchange. During the heat exchange process, heat will still be dissipated around the power distribution cabinet, causing the local ambient temperature to rise, resulting in poor heat dissipation effect and failing to achieve the expected heat dissipation design effect.

[0004] Moreover, in addition to heat dissipation, existing distribution cabinets still have some safety protection issues during use. For example, due to the need for ventilation and heat dissipation, a heat dissipation grille will be opened on the cabinet body, resulting in imperfect cabinet sealing performance. Dust, flying dust, small animals, etc. may enter the interior, causing equipment damage and posing a safety hazard. When personnel perform maintenance, there will be static electricity after contact with the cabinet door. Static electricity elimination in the field will be affected by the environment. This makes it impossible for operators to confirm whether the static electricity has been eliminated. If static electricity still exists during operation, there will be a safety hazard. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides a high and low voltage distribution cabinet with better heat dissipation effect and higher safety protection, which can better protect the cabinet while dissipating heat, thereby improving the safety of the entire equipment.

[0006] In order to achieve the above-mentioned object, the present invention specifically adopts the following technical solutions: a safety protection high and low voltage distribution cabinet, comprising a base, a shell is provided above the base, an access door is provided on the shell, a cooling module for reducing the temperature inside the shell is provided in the base, and a protection module is provided on one side of the base and located outside the access door;

[0007] The cooling module includes a circulation pipe group, in which a circulating medium is arranged. The circulation pipe group includes a heat absorption pipe arranged in the shell and a heat dissipation pipe arranged below the base, and a circulation power source is arranged between the heat absorption pipe and the heat dissipation pipe.

[0008] As a further improvement of the above technical solution:

[0009] A storage chamber for storing a circulating power source is provided below the base, and the heat dissipation pipe is located below the storage chamber.

[0010] The shell comprises four side panels connected end to end and a top panel located above the four side panels. Interlayers for mounting heat absorbing pipes are provided in both the side panels and the top panel.

[0011] The interlayer is provided with a heat insulating layer located on the outside and a heat conducting layer located on the inside, and the heat conducting layer is provided with a limiting groove for fixing the heat absorbing tube.

[0012] The protection module includes a support frame, on which is provided an electrostatic elimination pedal for eliminating static electricity for workers. The upper end surface of the electrostatic elimination pedal is higher than the lower end surface of the inspection door. A terminal is provided below the electrostatic elimination pedal. A handle for people to hold is provided at one end of the electrostatic elimination pedal, and an electrode sheet connected to the terminal is provided on the handle.

[0013] The static elimination pedal is arranged at an angle, and the higher end is longitudinally displaced along the height direction of the support frame, and the lower end is hinged to the support frame. A return spring is arranged under the static elimination pedal, and a limit block is arranged in the middle of the support frame to abut against the lower part of the static elimination pedal. The lower part of the static elimination pedal is provided with an avoidance groove corresponding to the position of the limit block.

[0014] The lower end of the handle is hinged to the support frame, and a driving arm for pulling the limit block to move horizontally is provided on the side wall of the handle.

[0015] The protection module also includes a power-off protection pedal located on one side of the static elimination pedal, a trigger switch is provided below the power-off protection pedal, a power-off switch electrically connected to the trigger switch is provided on the shell, and a drive shaft for controlling the lifting and lowering of the power-off protection pedal is provided on one side of the power-off protection pedal.

[0016] One end of the drive shaft is hinged to the support frame, and the other end is connected to the handle. The lower surface of the power-off protection pedal is provided with a groove located above the power-off switch, and a telescopic button corresponding to the position of the power-off switch is provided in the groove. A slider is provided on one side of the groove for driving the telescopic button to slide longitudinally.

[0017] The lower surface of the slider is an inclined surface and is slidably connected to the upper part of the telescopic button. The end of the slider close to the driving shaft is provided with a transmission rod extending to the outside of the groove, and the driving shaft is provided with a cam used in conjunction with the transmission rod.

[0018] The beneficial effects of the present invention are as follows: 1. The safety protection high and low voltage distribution cabinet includes a base, a shell is arranged above the base, a cooling module for reducing the temperature in the shell is arranged in the base, and the cooling module includes a circulation pipe group, a circulation medium is arranged in the circulation pipe group, and the circulation pipe group includes a heat absorption pipe arranged in the shell and a heat dissipation pipe arranged below the base. A circulation power source is arranged between the heat absorption pipe and the heat dissipation pipe. The medium circulation between the heat absorption pipe and the heat dissipation pipe realizes heat absorption and heat dissipation in the shell, thereby improving the overall heat dissipation effect, and utilizing geothermal energy to recover excess heat. No extra heat exchange equipment is required, the heat dissipation system equipment is simplified, and it can be ensured that the heat dissipation effect will not be reduced.

[0019] 2. Through the design of the protection module, the opening and closing of the cabinet door are limited to prevent non-operating personnel from opening the cabinet door by accident.

[0020] 3. The protection module includes a support frame, on which is provided an anti-static pedal for eliminating static electricity for operators. The anti-static pedal can eliminate static electricity before the operator opens the cabinet door, thereby improving safety when opening the cabinet door. At the same time, it can also protect the various components in the distribution cabinet from electrostatic breakdown.

[0021] 4. The protection module also includes a power-off protection pedal located on the side of the static elimination pedal. When power-off operation is required or power-off is required due to a fault, the power-off protection pedal can be connected in series with the power-off switch of the distribution cabinet itself to actively cut off the power to the distribution cabinet. A mechanical power-off switch is added on the basis of the original power-off procedure to ensure that the distribution cabinet is completely powered off before the cabinet door is opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a cross-sectional view of the housing in the present invention;

[0024] Figure 3 Schematic diagram of the structure of the interlayer in the present invention;

[0025] Figure 4 Schematic diagram of the structure of the protection module in the present invention;

[0026] Figure 5 Schematic diagram of the installation structure of the static elimination pedal in the present invention;

[0027] Figure 6 This is a schematic diagram of the installation structure of the power-off protection pedal of the present invention;

[0028] Figure 7 This is a schematic diagram of the installation structure of the handle in the present invention.

[0029] In the figure: 1. Base; 2. Shell; 3. Heat absorption tube; 4. Heat dissipation tube; 5. Circulating power source; 6. Inspection door; 7. Storage chamber; 8. Side panel; 9. Top panel; 10. Insulation layer; 11. Heat conduction layer; 12. Limiting groove; 13. Support frame; 14. Static elimination pedal; 15. Terminal; 16. Handle; 17. Return spring; 18. Limiting block; 19. Avoiding groove; 20. Driving arm; 21. Power-off protection pedal; 22. Trigger switch; 23. Power-off switch; 24. Driving shaft; 25. Groove; 26. Telescopic button; 27. Slider; 28. Transmission rod; 29. ​​Interlayer; 30. Electrode sheet. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0031] like Figure 1-7 As shown, the safety protection high and low voltage distribution cabinet of this embodiment includes a base 1, a shell 2 is provided above the base 1, and an inspection door 6 is provided on a side wall of the shell 2. A cooling module for reducing the temperature in the shell 2 is provided in the base 1, and a protection module located outside the inspection door 6 is provided on one side of the base 1. The cooling module includes a circulation pipe group, and a circulation medium is provided in the circulation pipe group. The circulation medium is water. The circulation pipe group includes a heat absorption pipe 3 provided in the shell 2 and a heat dissipation pipe 4 provided below the base 1. A circulation power source 5 is provided between the heat absorption pipe 3 and the heat dissipation pipe 4. The circulation power source 5 provides power for the circulation medium, and geothermal energy is used for absorbing and releasing heat, thereby reducing energy loss in the heat dissipation process. In addition, there is no need to open a heat dissipation port on the shell 2, which can improve the overall sealing of the distribution box, prevent impurities such as dust and flying insects from entering the shell 2, and thereby improve the overall safety and sealing of the distribution cabinet.

[0032] A storage chamber 7 for placing the circulating power source 5 is provided below the base 1. The heat dissipation pipe 4 is located below the storage chamber 7. The buried depth of the heat dissipation pipe 4 is 5-8 meters underground. The stability of the underground temperature is used to cool the circulating medium. When winter comes or the surface temperature is low, you can choose to stop heat exchange or continue heat exchange to provide a stable ambient temperature for the distribution box to ensure the stability of the equipment.

[0033] The shell 2 includes four side panels 8 connected end to end and a top panel 9 located above the four side panels 8. Both the side panels 8 and the top panel 9 are provided with an interlayer 29 for installing the heat absorption tube 3. The design of the interlayer 29 can provide protection for the heat absorption tube 3. The interlayer 29 is provided with a heat insulation layer 10 located on the outside of the heat absorption tube 3 and a heat conductive layer 11 located on the inside of the heat absorption tube 3. The heat conductive layer 11 is provided with a limiting groove 12 for fixing the heat absorption tube 3. The design of the limiting groove 12 can limit the heat absorption tube 3 to prevent it from deflecting, ensure that the distance between two adjacent heat absorption tubes 3 remains fixed, and avoid the local heat absorption capacity of the shell 2 from decreasing due to the deflection of the heat absorption tube 3, resulting in a local temperature increase in the distribution cabinet. At the same time, the heat conductive layer 11 can increase the heat absorption area covered by the heat absorption tube 3, thereby achieving the purpose of improving the cooling effect.

[0034] The protection module includes a support frame 13, on which is provided an electrostatic elimination pedal 14 for eliminating static electricity for operators. The upper end surface of the electrostatic elimination pedal 14 is higher than the lower end surface of the inspection door 6, and is used to block the inspection door 6 to prevent the inspection door 6 from being accidentally opened. A terminal 15 is provided below the electrostatic elimination pedal 14, and the terminal 15 releases static electricity after contacting the electrostatic elimination pedal 14. A handle 16 for personnel to hold is provided at one end of the electrostatic elimination pedal 14, and an electrode sheet 30 connected to the terminal 15 is provided on the handle 16. The electrode sheet 30 transfers static electricity after contacting the operator, and after transferring the static electricity to the electrostatic elimination pedal 14, the electrostatic elimination pedal 14 is pressed down by gravity to contact the terminal 15 to achieve grounding and eliminate static electricity.

[0035] The static elimination pedal 14 is set at an angle, and the higher end is longitudinally displaced along the height direction of the support frame 13, and the lower end is hinged to the support frame 13. A return spring 17 is provided on the lower surface of the static elimination pedal 14, and a limit block 18 is provided at the lower part of the front side of the support frame 13 to abut the lower part of the static elimination pedal 14. The lower surface of the static elimination pedal 14 is provided with an avoidance groove 19 corresponding to the position of the limit block 18.

[0036] The lower end of the handle 16 is hinged to the support frame 13, and a driving arm 20 is provided on the side wall of the handle 16 for pulling the limit block 18 to move horizontally. After the operator holds the handle 16, the static electricity is first released, and then a left thrust is applied to the handle 16. At this time, the handle 16 rotates to the left, driving the limit block 18 to slide to the left. Since the operator is standing on the static elimination pedal 14 during this operation, in order to avoid the person standing affecting the movement of the limit block 18, the lower surface of the limit block 18 is designed to be inclined, which can not affect the sliding of the limit block 18 when the friction increases when the person stands.

[0037] The protection module also includes a power-off protection pedal 21 located on one side of the static elimination pedal 14, a trigger switch 22 is provided below the power-off protection pedal 21, a power-off switch 23 electrically connected to the trigger switch 22 is provided on the housing 2, and a drive shaft 24 for controlling the lifting of the power-off protection pedal 21 is provided on the outside of the power-off protection pedal 21, the drive shaft 24 is located between the power-off protection pedal 21 and the static elimination pedal 14, and is distributed parallel to the power-off protection pedal 21, one end of the drive shaft 24 is hinged to the support frame 13, and the other end is connected to the handle 16, the lower surface of the power-off protection pedal 21 is provided with a groove 25 located above the power-off switch 23, and a telescopic button 26 corresponding to the position of the power-off switch 23 is provided in the groove 25, and a slider 27 for driving the telescopic button 26 to slide longitudinally is provided on one side of the groove 25, the lower surface of the slider 27 is an inclined surface and is slidably connected to the upper part of the telescopic button 26, and the slider 27 is close to the drive One end of the shaft 24 is provided with a transmission rod 28 extending to the outside of the groove 25, and a cam is provided on the drive shaft 24 for use with the transmission rod 28. When the handle 16 is turned to the right, the cam pushes the transmission rod 28 to the right after the drive shaft 24 rotates. After the transmission rod 28 slides to the right, it drives the slider 27 to move to the right. At this time, downward pressure is applied to the telescopic button 26. After the telescopic button 26 moves downward, the lower end extends out of the groove 25 and extends to the bottom of the power-off protection pedal 21. When the power-off protection pedal 21 moves downward under gravity, it contacts the trigger switch 22 and activates the power-off switch 23, cutting off the power supply of the distribution cabinet and providing power-off insurance for the original protection circuit of the distribution cabinet. A protective sleeve is provided on the outside of the trigger switch 22, and the upper end surface of the protective sleeve is located above the trigger switch 22. This design will form an anti-accidental touch end above the power-off switch 23, and the height of the anti-accidental touch end is less than the height of the telescopic button 26 extending out of the groove 25 The height of the static electricity elimination pedal 14 is that if the power-off protection pedal 21 is mistakenly triggered and moves downward without turning the handle 16, the power-off switch 23 will not be triggered, and the phenomenon of accidental power-off will not occur, ensuring that the distribution cabinet is in a power-off state when the cabinet door is opened. It should be noted that since the static electricity elimination pedal 14 has a blocking effect on the inspection door 6, the static electricity elimination pedal 14 needs to be pressed down synchronously when the power is cut off to cancel its opening restriction on the inspection door 6. At this time, a spare groove symmetrically distributed with the avoidance groove 19 needs to be designed on the lower surface of the static electricity elimination pedal 14. The spare groove is located to the right of the initial position of the limit block 18. When the handle 16 is turned to the right, the limit block 18 will move to the right with the handle 16 to the spare groove, so that the static electricity elimination pedal 14 will not be blocked by the limit block 18 when it descends.

[0038] It should be noted that in the description of the present invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and are not intended to indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0040] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, article, or apparatus / device.

[0041] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A safety protection high and low voltage distribution cabinet, comprising a base (1), a shell (2) disposed above the base (1), and an inspection door (6) disposed on the shell (2), characterized in that: A cooling module for reducing the temperature inside the shell (2) is provided in the base (1), and a protection module located outside the inspection door (6) is provided on one side of the base (1); The cooling module comprises a circulation pipe group, wherein a circulating medium is arranged in the circulation pipe group, the circulation pipe group comprises a heat absorption pipe (3) arranged in the shell (2) and a heat dissipation pipe (4) arranged below the base (1), and a circulation power source (5) is arranged between the heat absorption pipe (3) and the heat dissipation pipe (4); The protection module includes a support frame (13), and an electrostatic elimination pedal (14) for eliminating static electricity of an operator is provided on the support frame (13). The upper end surface of the electrostatic elimination pedal (14) is higher than the lower end surface of the inspection door (6). A terminal (15) is provided below the electrostatic elimination pedal (14). A handle (16) for a person to hold is provided at one end of the electrostatic elimination pedal (14). An electrode sheet (30) connected to the terminal (15) is provided on the handle (16). After the electrode sheet (30) contacts the operator, static electricity is transferred. After the static electricity is transferred to the electrostatic elimination pedal (14), the electrostatic elimination pedal (14) is pressed down by gravity so as to contact the terminal (15) to achieve grounding and eliminate static electricity. The protection module further comprises a power-off protection pedal (21) located on one side of the static elimination pedal (14); a trigger switch (22) is provided below the power-off protection pedal (21); a power-off switch (23) electrically connected to the trigger switch (22) is provided on the housing (2); and a drive shaft (24) for controlling the lifting of the power-off protection pedal (21) is provided on one side of the power-off protection pedal (21); A protective sleeve is provided on the outside of the trigger switch (22), the upper end surface of the protective sleeve is located above the trigger switch (22), and an anti-accidental touch end is formed above the power-off switch (23), and the height of the anti-accidental touch end is less than the height of the telescopic button (26) extending out of the groove (25); One end of the drive shaft (24) is hinged to the support frame (13), and the other end is connected to the handle (16). The lower surface of the power-off protection pedal (21) is provided with a groove (25) located above the power-off switch (23). A telescopic button (26) corresponding to the position of the power-off switch (23) is provided in the groove (25). A slider (27) for driving the telescopic button (26) to slide longitudinally is provided on one side of the groove (25).

2. The safety protection high and low voltage distribution cabinet according to claim 1 is characterized in that: A storage chamber (7) for placing a circulating power source (5) is provided below the base (1), and the heat dissipation pipe (4) is located below the storage chamber (7).

3. The safety protection high and low voltage distribution cabinet according to claim 1 is characterized in that: The shell (2) comprises four side panels (8) connected end to end and a top panel (9) located above the four side panels (8), and both the side panels (8) and the top panel (9) are provided with interlayers (29) for mounting heat absorbing tubes (3).

4. The safety protection high and low voltage distribution cabinet according to claim 3 is characterized in that: The interlayer (29) is provided with a heat insulating layer (10) located on the outside and a heat conducting layer (11) located on the inside, and the heat conducting layer (11) is provided with a limiting groove (12) for fixing the heat absorbing tube (3).

5. The safety protection high and low voltage distribution cabinet according to claim 1 is characterized in that: The static elimination pedal (14) is tilted, and the higher end thereof is longitudinally displaced along the height direction of the support frame (13), and the lower end thereof is hinged to the support frame (13). A return spring (17) is provided below the static elimination pedal (14), and a limit block (18) abutting against the lower part of the static elimination pedal (14) is provided in the middle of the support frame (13). The lower part of the static elimination pedal (14) is provided with a avoidance groove (19) corresponding to the position of the limit block (18).

6. The safety protection high and low voltage distribution cabinet according to claim 5, characterized in that: The lower end of the handle (16) is hinged to the support frame (13), and a driving arm (20) for pulling the limit block (18) to move laterally is provided on the side wall of the handle (16).

7. The safety protection high and low voltage distribution cabinet according to claim 1, characterized in that: The lower surface of the slider (27) is an inclined surface and is slidably connected to the upper part of the telescopic button (26). The slider (27) is provided with a transmission rod (28) extending to the outside of the groove (25) at one end close to the drive shaft (24). The drive shaft (24) is provided with a cam for use with the transmission rod (28).

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