Electric shock prevention power distribution cabinet

Abstract

The utility model relates to a power distribution cabinet technical field discloses an anti -electric shock's power distribution cabinet, including the cabinet, the cabinet inside left and right sides are provided with dehumidification mechanism, the cabinet front portion is installed with the cabinet door, the cabinet lower part corner is provided with the foot prop, the dehumidification shell is installed in the cabinet inboard wall, the exhaust port is established in the dehumidification shell top, the air inlet grille is established in the dehumidification shell lower part, the heat dissipation fan no.

Description

Technical Field

[0001] This utility model relates to the field of power distribution cabinet technology, and in particular to a power distribution cabinet that is protected against electric shock. Background Technology

[0002] In power systems, distribution cabinets, as the final stage equipment, play a crucial role. They can accurately distribute electrical energy to various power lines as required, acting like a "transportation hub" in the power transmission network, and are widely used in many fields such as industry, construction, medical care, and transportation.

[0003] We encountered some problems when using the distribution cabinet. First, the humidity control inside the cabinet was not good. When the humidity in the air was high, water vapor easily condensed on the surface of electrical components, which led to a decrease in the insulation performance of the components and even caused short circuit faults, greatly increasing the risk of electric shock. Second, the electric shock protection mechanism was not perfect. Traditional distribution cabinets lacked efficient leakage detection and early warning devices. When leakage occurred, they could not issue an alarm in time, making it difficult to protect the personal safety of operators. Utility Model Content

[0004] The main purpose of this utility model is to provide a power distribution cabinet that is protected against electric shock, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a power distribution cabinet for preventing electric shock, comprising a cabinet body, dehumidification mechanisms provided on the left and right sides inside the cabinet body, a cabinet door installed at the front of the cabinet body, and foot supports provided at the four corners of the lower part of the cabinet body;

[0006] The dehumidification mechanism includes a dehumidification shell, an air inlet grille, an exhaust port, multiple cooling fans (first type), heat-conducting fins, a heat insulation plate, multiple thermoelectric cooling chips, heat dissipation fins, a protective cover, upper and lower ventilation openings, a drain pipe, and multiple cooling fans (second type). The dehumidification shell is installed on the inner side wall of the cabinet. The exhaust port is located on the upper part of the dehumidification shell, and the air inlet grille is located on the lower part of the dehumidification shell. The cooling fans (first type) are installed inside the air inlet grille. One side of the heat-conducting fins is fixedly connected to the inner side wall of the dehumidification shell. The outer periphery of the heat insulation plate is fixedly connected to the middle part of the dehumidification shell. The outer periphery of the thermoelectric cooling chips is fixedly connected to the middle part of the heat insulation plate. The cooling side of the thermoelectric cooling chip is connected to the other side of the heat-conducting fins via thermal grease, and the heating side of the thermoelectric cooling chip is connected to the heat dissipation fins via thermal grease. The other side of the heat dissipation fins penetrates through the side wall of the dehumidification shell and the side wall of the cabinet. The protective cover is located on the outer periphery of the cabinet and is fitted around the outer periphery of the heat dissipation fins. The ventilation openings are located on the upper and lower sides of the protective cover. The multiple cooling fans (second type) are installed on the inner top wall of the protective cover.

[0007] Preferably, a protective shell is provided on the upper part of the cabinet, and a leakage current detector and a controller are provided inside the protective shell. The controller is electrically connected to the audible and visual alarm and the leakage current detector, and the audible and visual alarm is installed at the front of the protective shell.

[0008] Preferably, a copper busbar is provided at the bottom of the cabinet, and the copper busbar is connected to the grounding wire.

[0009] Preferably, a filter screen is provided on the outer side of the air intake grille.

[0010] Preferably, the protective cover is provided with filter screens on the upper and lower sides, and the filter screens are aligned with the ventilation openings.

[0011] Preferably, the drain pipe is either "∽" or "И" shaped, and the end of the drain pipe away from the dehumidifier shell penetrates the side wall of the dehumidifier shell.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. By setting up dehumidification mechanisms on the left and right sides inside the cabinet, the cooling characteristics of the semiconductor cooling chip are used to cool and condense the humid air inside the cabinet into water droplets on the surface of the heat-conducting fins. The water droplets are discharged from the cabinet through the drain pipe, which effectively reduces the humidity inside the cabinet, prevents electrical components from being damaged by moisture, and improves the safety and stability of the power distribution cabinet operation.

[0014] 2. The upper protective shell of the cabinet integrates a leakage current detector and controller. When the leakage current detector detects a leakage current signal, the controller immediately activates the audible and visual alarm installed on the front of the protective shell. The audible and visual alarm promptly alerts the staff, buying valuable time for fault handling and effectively preventing electric shock accidents. Furthermore, when a leakage current occurs, the leakage current can be quickly conducted to the ground through the copper busbar, greatly enhancing the power distribution cabinet's ability to prevent electric shock and providing a solid safety guarantee for personnel and equipment. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a power distribution cabinet designed to prevent electric shock according to this utility model.

[0016] Figure 2 This is a schematic diagram of the dehumidification mechanism of a power distribution cabinet designed to prevent electric shock according to this utility model.

[0017] Figure 3 This is a schematic diagram of the drainage pipe structure of a power distribution cabinet designed to prevent electric shock according to this utility model.

[0018] In the diagram: 1. Cabinet body; 2. Cabinet door; 3. Leg support; 4. Audible and visual alarm; 5. Protective shell; 6. Dehumidification mechanism; 601. Dehumidification shell; 602. Air intake grille; 603. Exhaust port; 604. Cooling fan one; 605. Heat-conducting fins; 606. Heat insulation plate; 607. Semiconductor cooling chip; 608. Heat dissipation fins; 609. Protective cover; 610. Ventilation opening; 611. Drain pipe; 612. Cooling fan two. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] like Figure 1-3 As shown, a power distribution cabinet for protection against electric shock includes a cabinet body 1, dehumidification mechanisms 6 are provided on the left and right sides inside the cabinet body 1, a cabinet door 2 is installed at the front of the cabinet body 1, and foot supports 3 are provided at the four corners of the lower part of the cabinet body 1.

[0021] In this embodiment, the dehumidification mechanism 6 includes a dehumidification shell 601, an air inlet grille 602, an exhaust port 603, multiple cooling fans 604, heat-conducting fins 605, a heat insulation plate 606, multiple semiconductor cooling chips 607, heat dissipation fins 608, a protective cover 609, two ventilation openings 610, a drain pipe 611, and multiple cooling fans 612. The dehumidification shell 601 is installed on the inner wall of the cabinet 1. The exhaust port 603 is located on the upper part of the dehumidification shell 601, and the air inlet grille 602 is located on the lower part of the dehumidification shell 601. The cooling fans 604 are installed inside the air inlet grille 602. One side of the heat-conducting fins 605 is fixedly connected to the inner wall of the dehumidification shell 601. The outer periphery of the heat insulation plate 606 is fixedly connected to the middle part of the dehumidification shell 601. The outer periphery of the semiconductor cooling chips 607 is fixedly connected to the middle part of the heat insulation plate 606. The cooling side of the thermoelectric cooler 607 is connected to the other side of the heat-conducting fin 605 via thermally conductive silicone grease. The heating side of the thermoelectric cooler 607 is connected to the heat dissipation fin 608 via thermally conductive silicone grease. The other side of the heat dissipation fin 608 penetrates the side wall of the dehumidification shell 601 and the side wall of the cabinet 1. The protective cover 609 is set on the outer periphery of the cabinet 1 and is fitted around the outer periphery of the heat dissipation fin 608. The ventilation openings 610 are opened on the upper and lower sides of the protective cover 609. Multiple cooling fans 612 are installed on the inner top wall of the protective cover 609. A filter screen is set on the outer side of the air intake grille 602. Filter screens are set on the upper and lower sides of the protective cover 609. The filter screens are aligned with the ventilation openings 610. The drain pipe 611 is either "∽" or "И" shaped, and the end of the drain pipe 611 away from the dehumidification shell 601 penetrates the side wall of the dehumidification shell 601.

[0022] Specifically, when the distribution cabinet is put into operation, the humid air inside the cabinet enters the dehumidification shell 601 through the air intake grille 602 under the action of the cooling fan 604. The cooling side of the thermoelectric cooler 607 is tightly connected to the heat-conducting fins 605 through thermal grease, which cools the air entering the dehumidification shell 601. The water vapor in the air condenses into water droplets on the surface of the heat-conducting fins 605 when it encounters the cold. The water droplets slide down the heat-conducting fins 605 to the drain pipe 611 and are discharged from the cabinet 1 through the drain pipe 611. At the same time, the heat generated by the heating side of the thermoelectric cooler 607 is transferred to the heat dissipation fins 608 through the thermal grease. The heat dissipation fins 608 penetrate the side walls of the dehumidification shell 601 and the cabinet 1. The cooling fan 612 on the top wall of the protective cover 609 operates, and the heat on the heat dissipation fins 608 is discharged from the cabinet through the ventilation holes 610 on the upper and lower sides of the protective cover 609.

[0023] In this embodiment, a protective shell 5 is provided on the upper part of the cabinet 1. A leakage current detector and a controller are provided inside the protective shell 5. The controller is electrically connected to the audible and visual alarm 4 and the leakage current detector. The audible and visual alarm 4 is installed at the front of the protective shell 5. A copper busbar is provided at the lower part of the cabinet 1 and is connected to the grounding wire.

[0024] Specifically, when the leakage current detector detects a leakage current in cabinet 1, it immediately transmits the signal to the controller. The controller then controls the audible and visual alarm 4 to issue an audible and visual alarm signal to remind the staff to handle the situation in time. In addition, the copper busbar at the bottom of cabinet 1 is connected to the grounding wire to form a good grounding loop. Once a leakage current occurs, the leakage current can be quickly conducted to the ground through the copper busbar, thereby achieving the function of preventing electric shock.

[0025] Working principle:

[0026] When the distribution cabinet is put into operation, the humid air inside the cabinet enters the dehumidification shell 601 through the air intake grille 602 under the action of the cooling fan 604. The cooling side of the thermoelectric cooler 607 is tightly connected to the heat-conducting fins 605 through thermal grease, which cools the air entering the dehumidification shell 601. The water vapor in the air condenses into water droplets on the surface of the heat-conducting fins 605 when it encounters the cold. The water droplets slide down the heat-conducting fins 605 to the drain pipe 611 and are discharged from the cabinet 1 through the drain pipe 611. At the same time, the heat generated by the heating side of the thermoelectric cooler 607 is transferred to the heat dissipation fins 608 through the thermal grease. The heat dissipation fins 608 penetrate the side walls of the dehumidification shell 601 and the cabinet 1. The cooling fan 612 on the top wall of the protective cover 609 operates, and the heat on the heat dissipation fins 608 is discharged from the cabinet through the ventilation holes 610 on the upper and lower sides of the protective cover 609. When the leakage current detector detects a leakage current in cabinet 1, it immediately transmits the signal to the controller. The controller then controls the audible and visual alarm 4 to issue an audible and visual alarm signal to remind the staff to handle the situation in time. In addition, the copper busbar at the bottom of cabinet 1 is connected to the grounding wire to form a good grounding loop. Once a leakage current occurs, the leakage current can be quickly conducted to the ground through the copper busbar, thereby realizing the function of electric shock protection.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A power distribution cabinet for protection against electric shock, comprising a cabinet body (1), characterized in that: The cabinet (1) is equipped with dehumidification mechanisms (6) on the left and right sides inside, and a cabinet door (2) is installed at the front of the cabinet (1). The cabinet (1) is equipped with foot supports (3) at the four corners of the lower part. The dehumidification mechanism (6) includes a dehumidification shell (601), an air intake grille (602), an exhaust port (603), multiple cooling fans (604), heat-conducting fins (605), a heat insulation plate (606), multiple semiconductor cooling chips (607), heat dissipation fins (608), a protective cover (609), two ventilation openings (610), a drain pipe (611), and multiple cooling fans (612). The dehumidification shell (601) is installed on the inner wall of the cabinet (1). The exhaust port (603) is located on the upper part of the dehumidification shell (601). The air intake grille (602) is located on the lower part of the dehumidification shell (601). The cooling fans (604) are installed inside the air intake grille (602). One side of the heat-conducting fins (605) is fixedly connected to the inner wall of the dehumidification shell (601). The heat insulation plate (606) is fixedly connected to the middle of the dehumidification shell (601) on its outer periphery. The semiconductor cooling chip (607) is fixedly connected to the middle of the heat insulation plate (606) on its outer periphery. The cooling side of the semiconductor cooling chip (607) is connected to the other side of the thermal fin (605) through thermal grease. The heating side of the semiconductor cooling chip (607) is connected to the heat dissipation fin (608) through thermal grease. The other side of the heat dissipation fin (608) penetrates the side wall of the dehumidification shell (601) and the side wall of the cabinet (1). The protective cover (609) is set on the outer periphery of the cabinet (1). The protective cover (609) is sleeved on the outer periphery of the heat dissipation fin (608). The ventilation port (610) is opened on the upper and lower sides of the protective cover (609). Multiple cooling fans (612) are installed on the inner top wall of the protective cover (609).

2. The electric shock-proof distribution cabinet according to claim 1, characterized in that: The upper part of the cabinet (1) is provided with a protective shell (5). Inside the protective shell (5) is a leakage current detector and a controller. The controller is electrically connected to the sound and light alarm (4) and the leakage current detector. The sound and light alarm (4) is installed at the front of the protective shell (5).

3. The electric shock-proof distribution cabinet according to claim 1, characterized in that: The lower part of the cabinet (1) is provided with a copper busbar, which is connected to the grounding wire.

4. The electric shock-proof distribution cabinet according to claim 1, characterized in that: A filter screen is provided on the outside of the air intake grille (602).

5. A power distribution cabinet for protection against electric shock according to claim 1, characterized in that: The protective cover (609) is provided with filter screens on the upper and lower sides, and the filter screens are aligned with the vents (610).

6. The electric shock-proof distribution cabinet according to claim 1, characterized in that: The drain pipe (611) is either "∽" or "И" shaped, and the end of the drain pipe (611) away from the dehumidifier shell (601) penetrates the side wall of the dehumidifier shell (601).

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