Safety protection high-low voltage power distribution cabinet

Abstract

The invention relates to the technical field of power distribution cabinet equipment, in particular to a safety protection high-low voltage power distribution cabinet which comprises a base, a shell is arranged above the base, a cooling module used for reducing the temperature in the shell is arranged in the base, the cooling module comprises a circulating pipe set, and a circulating medium is arranged in the circulating pipe set. The circulating pipe set comprises a heat absorption pipe arranged in the shell and a heat dissipation pipe arranged below the base, a circulating power source is arranged between the heat absorption pipe and the heat dissipation pipe, heat absorption and heat dissipation in the shell are achieved through medium circulation between the heat absorption pipe and the heat dissipation pipe, and then the overall heat dissipation effect is improved; the geothermal energy is used for recycling redundant heat, redundant heat exchange equipment is not needed, heat dissipation system equipment is simplified, and it can be guaranteed that the heat dissipation effect cannot be 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 switch cabinets, which are then stepped down by transformers and led out to low voltage distribution cabinets. Low voltage distribution cabinets are then connected to distribution boards, control boxes and switch boxes of various power users. The equipment inside is a distribution device that meets the design functional requirements by assembling some switches, circuit breakers, fuses, buttons, indicator lights, meters, wires and other protective devices into one.

[0003] A Chinese patent (application number: 2017213617687) discloses a high- and low-voltage power distribution cabinet for efficient cooling. The technical solution thereof 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 insulating layer is arranged 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 arranged on the cabinet. The cooling pipe is evenly distributed on the side wall of the inner shell in an S shape. The two ports of the cooling pipe are placed on the outside of the outer shell after passing through the through hole. 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 the device can effectively dissipate heat, it needs to perform a separate heat exchange. During the heat exchange process, heat will still be dissipated around the power distribution cabinet, resulting in an increase in the local ambient temperature, resulting in a poor heat dissipation effect, and failing to achieve the expected heat dissipation design effect.

[0004] Moreover, the existing power distribution cabinets still have some safety protection issues in addition to heat dissipation during use. For example, due to the need for ventilation and heat dissipation, a heat dissipation grille will be opened on the cabinet, resulting in imperfect sealing performance of the cabinet, and dust, flying dust, small animals, etc. will enter the interior, causing equipment damage and posing safety hazards. 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, which makes it impossible for operators to confirm whether the static electricity has been eliminated. If static electricity still exists during operation, there will be safety hazards. 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 scheme: a safety protection high and low voltage distribution cabinet, comprising a base, a shell is arranged above the base, an inspection door is arranged on the shell, a cooling module for reducing the temperature in the shell is arranged in the base, and a protection module located outside the inspection door is arranged on one side of the base; The cooling module comprises a circulation pipe group, in which a circulation medium is arranged, the circulation pipe group comprises a heat absorption pipe arranged in the shell and a heat dissipation pipe arranged under the base, and a circulation power source is arranged between the heat absorption pipe and the heat dissipation pipe.

[0007] As a further improvement of the above technical solution: A storage chamber for placing a circulating power source is arranged below the base, and the heat dissipation pipe is located below the storage chamber.

[0008] The shell comprises four side panels connected end to end and a top panel located above the four side panels, and interlayers for installing heat absorbing pipes are arranged in the side panels and the top panel.

[0009] 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.

[0010] The protection module includes a support frame, on which is provided an anti-static pedal for eliminating static electricity for workers, the upper end surface of the anti-static pedal is higher than the lower end surface of the inspection door, a terminal is provided below the anti-static pedal, and a handle for workers to hold is provided at one end of the anti-static pedal, and an electrode sheet connected to the terminal is provided on the handle.

[0011] The static elimination pedal is arranged at an angle, and the higher end thereof is longitudinally displaced along the height direction of the support frame, and the lower end thereof is hinged to the support frame. A return spring is arranged under the static elimination pedal, and a limit block abutting against the lower part of the static elimination pedal is arranged in the middle part of the support frame, and a avoidance groove corresponding to the position of the limit block is arranged at the lower part of the static elimination pedal.

[0012] 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.

[0013] The protection module also includes a power-off protection pedal located on one side of the static elimination pedal, a trigger switch is arranged below the power-off protection pedal, a power-off switch electrically connected to the trigger switch is arranged on the shell, and a drive shaft for controlling the lifting and lowering of the power-off protection pedal is arranged on one side of the power-off protection pedal.

[0014] 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.

[0015] 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.

[0016] The beneficial effects of the present invention are as follows: 1. The safety protection high and low voltage distribution cabinet comprises a base, a shell is arranged above the base, a cooling module for reducing the temperature in the shell is arranged in the base, the cooling module comprises a circulation pipe group, a circulation medium is arranged in the circulation pipe group, the circulation pipe group comprises 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, and the heat absorption and heat dissipation in the shell are realized by the circulation of 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 will not be reduced. Through the design of the protection module, the opening and closing of the cabinet door is limited to prevent non-operating personnel from accidentally touching the cabinet door and opening it. 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 be used to eliminate static electricity before the operator opens the cabinet door, thereby improving the safety when opening the cabinet door, and also protecting the various components in the power distribution cabinet from static electricity breakdown. The protection module also includes a power-off protection pedal located on one side of the anti-static pedal. When a power-off operation is required, or a power-off operation is required due to a fault, the power-off protection pedal can be connected in series with the power-off switch of the power distribution cabinet itself to actively power off the power distribution cabinet. A mechanical power-off switch is added on the basis of the original power-off procedure to ensure that the power distribution cabinet is completely powered off before the cabinet door is opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a cross-sectional view of the housing in the present invention; Figure 3 It is a schematic diagram of the structure of the interlayer in the present invention; Figure 4 It is a structural schematic diagram of the protection module in the present invention; Figure 5 It is a schematic diagram of the installation structure of the static elimination pedal in the present invention; Figure 6This is a schematic diagram of the installation structure of the power-off protection pedal of the present invention; Figure 7 It is a schematic diagram of the installation structure of the handle in the present invention.

[0018] 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. thermal insulation layer; 11. thermal conductive layer; 12. limit groove; 13. support frame; 14. static elimination pedal; 15. terminal; 16. handle; 17. reset spring; 18. limit block; 19. avoidance groove; 20. drive arm; 21. power-off protection pedal; 22. trigger switch; 23. power-off switch; 24. drive shaft; 25. groove; 26. telescopic button; 27. slider; 28. transmission rod; 29. ​​interlayer; 30. electrode sheet. DETAILED DESCRIPTION

[0019] 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 protection scope of the present invention.

[0020] 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, 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, a circulation medium is provided in the circulation pipe group, and the circulation medium is water. The circulation pipe group includes 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 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 heat absorption and heat release, thereby reducing energy loss in the heat dissipation process, and 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 thus improve the overall safety and sealing of the distribution cabinet.

[0021] A storage chamber 7 for placing a 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 you can choose to continue heat exchange to provide a stable ambient temperature for the distribution box to ensure the stability of the equipment.

[0022] 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 being deflected, ensure that the distance between two adjacent heat absorption tubes 3 remains fixed, and avoid the local heat absorption capacity of the shell 2 being reduced 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.

[0023] The protection module includes a support frame 13, on which is provided an anti-static pedal 14 for eliminating static electricity for operators. The upper end surface of the anti-static 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 anti-static pedal 14, and the terminal 15 releases static electricity after contacting the anti-static pedal 14. A handle 16 for personnel to hold is provided at one end of the anti-static 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 anti-static pedal 14, the anti-static pedal 14 is pressed down by gravity to contact the terminal 15 to achieve grounding and eliminate static electricity.

[0024] The static elimination pedal 14 is arranged at an angle, 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 arranged on the lower surface of the static elimination pedal 14, and a limit block 18 abutting against the lower part of the static elimination pedal 14 is arranged on the lower part of the front side of the support frame 13. A avoidance groove 19 corresponding to the position of the limit block 18 is opened on the lower surface of the static elimination pedal 14.

[0025] 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 thrust to the left 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 stands on the static elimination pedal 14 during this operation, in order to prevent the operator from standing and affecting the movement of the limit block 18, the lower surface of the limit block 18 is designed to be inclined, which can prevent the sliding of the limit block 18 from being affected when the friction increases when the operator stands.

[0026] 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 outer side 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, and a groove 25 is provided on the lower surface of the power-off protection pedal 21 above the power-off switch 23, and a groove 25 is provided in the groove 25 for controlling the lifting of the power-off protection pedal 21. The telescopic button 26 corresponding to the position of the electric switch 23 has a slider 27 on one side of the groove 25 for driving the telescopic button 26 to slide longitudinally. 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 end of the slider 27 close to the drive shaft 24 is provided with a transmission rod 28 extending to the outside of the groove 25. The drive shaft 24 is provided with a cam used in conjunction 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, and the telescopic button 26 moves downward. After the lower end of the telescopic button 26 extends out of the groove 25, it extends to the bottom of the power-off protection pedal 21. When the power-off protection pedal 21 moves downward under gravity, it will contact the trigger switch 22 and activate 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 power-off switch 23, and the upper end surface of the protective sleeve is located above the power-off switch 23. This design will form an anti-mistaken touch end above the power-off switch 23. The height of the anti-mistaken touch end is less than the height of the telescopic button 26 extending out of the groove 25. When the handle 16 is not turned, if the power-off protection pedal 21 is mistakenly triggered and moves downward, the power-off switch 23 will not be triggered, and the power-off switch 23 will not be triggered. There will be no phenomenon of power being accidentally triggered to cut off the power, 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 elimination pedal 14 has a blocking effect on the inspection door 6, the static elimination pedal 14 needs to be pressed down synchronously when the power is cut off to cancel the opening restriction on the inspection door 6. At this time, it is necessary to design a spare groove symmetrically distributed with the avoidance groove 19 on the lower surface of the static elimination pedal 14. The spare groove is located on the right side 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 elimination pedal 14 will not be blocked by the limit block 18 when it descends.

[0027] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0030] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A safety protection high and low voltage distribution cabinet, comprising a base (1), a housing (2) disposed above the base (1), an inspection door (6) disposed on the housing (2), characterized in that: A cooling module for reducing the temperature inside the shell (2) is arranged in the base (1), and a protection module located outside the inspection door (6) is arranged on one side of the base (1); The cooling module comprises a circulation pipe group, wherein a circulation 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).

2. The safety protection high and low voltage distribution cabinet according to claim 1 is characterized in that: A storage chamber (7) for accommodating 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 pipes (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 protection module comprises a support frame (13), on which a static elimination pedal (14) for eliminating static electricity of a worker is arranged, the upper end surface of the static elimination pedal (14) is higher than the lower end surface of the inspection door (6), a terminal (15) is arranged below the static elimination pedal (14), and a handle (16) for a worker to hold is arranged at one end of the static elimination pedal (14), and an electrode sheet (30) connected to the terminal (15) is arranged on the handle (16).

6. The safety protection high and low voltage distribution cabinet according to claim 5 is characterized in that: The static elimination pedal (14) is arranged at an angle, 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 arranged below the static elimination pedal (14); a limit block (18) abutting against the lower part of the static elimination pedal (14) is arranged in the middle part of the support frame (13); and a avoidance groove (19) corresponding to the position of the limit block (18) is arranged at the lower part of the static elimination pedal (14).

7. The safety protection high and low voltage distribution cabinet according to claim 6 is 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 horizontally is provided on the side wall of the handle (16).

8. The safety protection high and low voltage distribution cabinet according to claim 5 is characterized in that: 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 arranged below the power-off protection pedal (21); a power-off switch (23) electrically connected to the trigger switch (22) is arranged on the housing (2); and a drive shaft (24) for controlling the lifting and lowering of the power-off protection pedal (21) is arranged on one side of the power-off protection pedal (21).

9. The safety protection high and low voltage distribution cabinet according to claim 8 is characterized in that: One end of the drive shaft (24) is hinged to the support frame (13), and the other end is connected to the handle (16); a groove (25) located above the power-off switch (23) is provided on the lower surface of the power-off protection pedal (21); 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).

10. The safety protection high and low voltage distribution cabinet according to claim 9 is 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); an end of the slider (27) close to the drive 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).

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