Anti-electric shock coal mine power supply and distribution equipment

Abstract

The utility model relates to the technical field of coal mine equipment, and discloses anti-electric shock coal mine power supply and distribution equipment which comprises a power supply and distribution cabinet, the bottom of the power supply and distribution cabinet is fixedly connected with a plurality of insulation supporting columns, the outer portions of the insulation supporting columns are slidably connected with waterproof isolation pads, and the bottom of each waterproof isolation pad is fixedly connected with a base. The front end of the top of the waterproof isolation pad is fixedly connected with an insulating standing pad, three peripheries of the interior of the waterproof isolation pad are fixedly connected with insulating protective fences, and the upper end of the left side of the interior of the power supply and distribution cabinet is fixedly connected with a protective assembly for providing a power-off function. According to the power supply and distribution cabinet, the overload protector and the leakage protector firstly perceive and cut off immediately, part of current leakage cannot lead to the ground when the insulation supporting columns at the bottom of the power supply and distribution cabinet are exposed, maintenance personnel stand on the insulation standing pad for maintenance during maintenance, and the waterproof isolation pad is arranged at the bottom. The multiple protections achieve the electric shock prevention effect.

Description

Technical Field

[0001] This utility model relates to the technical field of coal mine equipment, and in particular to a coal mine power supply and distribution equipment designed to prevent electric shock. Background Technology

[0002] A coal mine is a mine that extracts, processes, and utilizes coal resources from underground coal seams. Coal mines are the primary source of coal, which is widely used in energy production, metallurgy, fertilizer production, building materials, and many other fields. Power supply and distribution equipment refers to the equipment and facilities used in power systems for the generation, transmission, distribution, and control of electrical energy. Coal mine power supply and distribution equipment refers to various equipment and facilities used for power supply, distribution, control, and protection during coal mine production, ensuring a stable and safe power supply to all work areas, machinery, and lighting systems within the mine. Coal mines typically have high power demands and operate in a special environment, requiring equipment with high safety, reliability, and explosion-proof performance.

[0003] The insulation design of power supply and distribution equipment in coal mines commonly includes insulators, insulating boards, and insulating bushings. These components isolate electrical equipment from the ground and other conductive parts to prevent electrical short circuits and leakage currents. The working principle is to provide electrical isolation, preventing external metal parts of the equipment from becoming live, thus protecting miners and equipment from electric shock and fire risks. However, this single insulation method is susceptible to aging and damage in harsh environments, therefore it usually requires regular maintenance and multiple safeguards.

[0004] In existing technologies, the insulation design of some equipment relies on only a single insulation method, lacking multiple protective measures. As a result, if one insulation layer fails, the equipment will be exposed to a high-voltage environment, posing a significant safety hazard to workers and leading to frequent electric shock accidents. Therefore, an electric shock-proof coal mine power supply and distribution equipment is proposed to solve the above problems. Utility Model Content

[0005] This utility model proposes an anti-electric shock power supply and distribution equipment for coal mines, aiming to improve the problem that some existing equipment cannot prevent electric shock.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An anti-electric shock power supply and distribution device for coal mines includes a power supply and distribution cabinet. Multiple insulating support columns are fixedly connected to the bottom of the power supply and distribution cabinet. A waterproof isolation pad is slidably connected to the outside of each insulating support column. A base is fixedly connected to the bottom of the waterproof isolation pad. An insulating standing pad is fixedly connected to the top front end of the waterproof isolation pad. Insulating protective railings are fixedly connected to the three sides of the inside of the waterproof isolation pad. A protective component providing power-off function is fixedly connected to the upper left side of the inside of the power supply and distribution cabinet.

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

[0009] The protective component includes an overload protector, the external rear side of which is fixedly connected to the upper left side of the inside of the power distribution cabinet, and a leakage current protector is fixedly connected to the upper left side of the inside of the power distribution cabinet.

[0010] As a further description of the above technical solution:

[0011] A dust filter plate is fixedly connected to the upper rear side of the power distribution cabinet, and a small cooling fan is rotatably connected to the front side of the dust filter plate.

[0012] As a further description of the above technical solution:

[0013] A condenser is fixedly connected to the upper rear side of the internal power distribution cabinet, and an evaporator is fixedly connected to the right side of the external part of the condenser.

[0014] As a further description of the above technical solution:

[0015] The power distribution cabinet has multiple extra-large air inlets on its internal rear surface, and a heat dissipation component for cooling is fixedly connected to the lower internal rear side of the power distribution cabinet.

[0016] As a further description of the above technical solution:

[0017] The heat dissipation assembly includes a semiconductor cooling plate, with two water-cooled transport pipes fixedly connected to the top of the semiconductor cooling plate, and a small storage tank fixedly connected to the other end of the two water-cooled transport pipes.

[0018] As a further description of the above technical solution:

[0019] The front of the small cooling fan is fixed to the rear of the condenser, and the exterior of the small cooling fan is slidably connected to the upper left and right sides of the power distribution cabinet.

[0020] As a further description of the above technical solution:

[0021] The bottom of the insulating support column is fixedly connected to the top of the base, and the top of the base is fixedly connected to the bottom of the insulating guardrail on all three sides.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, when a short circuit occurs inside the power distribution cabinet, causing current leakage, the overload protector and leakage protector will detect it first and immediately cut off the circuit. Some of the current leakage will not reach the ground through the insulating support column at the bottom of the power distribution cabinet. Furthermore, maintenance personnel can stand on the insulating support mat to carry out maintenance, which further enhances safety. In addition, a waterproof isolation mat is placed at the bottom to prevent some current from being transmitted through water. All of the above protections achieve the effect of preventing electric shock.

[0024] 2. In this utility model, a small cooling fan is activated to draw external air through an extra-large air inlet and a dust filter plate to the condenser, where it is then evaporated by the evaporator, thereby reducing the moisture inside the power distribution cabinet. Simultaneously, the semiconductor cooling plate is activated, and the condensate is transported to a small storage tank through a water-cooled transport pipe, thereby reducing the temperature inside the power distribution cabinet. The combination of these two methods achieves the effect of moisture-proofing, damp-proofing, and heat dissipation in the power distribution cabinet. Attached Figure Description

[0025] Figure 1 This is a perspective view of an anti-electric shock power supply and distribution equipment for coal mines proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of a base for an anti-electric shock coal mine power supply and distribution equipment proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of an insulating protective railing for anti-electric shock coal mine power distribution equipment proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of a dust filter plate for a coal mine power supply and distribution equipment designed to prevent electric shock, as proposed in this utility model.

[0029] Legend:

[0030] 1. Power distribution cabinet; 2. Insulating support column; 3. Waterproof isolation pad; 4. Base; 5. Insulating standing pad; 6. Insulating guardrail; 7. Overload protector; 8. Residual current protector; 9. Dustproof filter plate; 10. Small cooling fan; 11. Condenser; 12. Evaporator; 13. Semiconductor cooling plate; 14. Water-cooled transport pipe; 15. Small storage tank; 16. Extra-large air inlet. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 1 , Figure 3 This utility model provides an embodiment of an anti-electric shock power supply and distribution device for coal mines, comprising a power supply and distribution cabinet 1. The power supply and distribution cabinet 1 has a rectangular cabinet structure, and its outer shell is made of a sturdy metal material with good protective performance, such as high-quality carbon steel. Its appearance is treated with anti-rust treatment to adapt to the relatively humid environment of underground coal mines and extend the service life of the cabinet. The bottom of the power supply and distribution cabinet 1 is fixedly connected to multiple insulating support columns 2. The insulating support columns 2 have a slender cylindrical shape and are made of insulating materials with high insulation performance and high strength, such as epoxy resin. They can not only effectively isolate the electrical connection between the cabinet and the ground to prevent leakage, but also have sufficient rigidity. The insulation support column 2 is strong enough to withstand the weight of the power distribution cabinet 1 and the impact of external forces, ensuring the stability of the cabinet placement. The bottom of the insulation support column 2 is fixedly connected to the top of the base 4. The top three sides of the base 4 are fixedly connected to the bottom of the insulation guardrail 6. A waterproof isolation pad 3 is slidably connected to the outside of the insulation support column 2. The waterproof isolation pad 3 is a rectangular pad structure with a certain thickness and shape. Its material is a rubber material with good waterproof performance and flexibility, such as nitrile rubber. The nitrile rubber waterproof isolation pad 3 can fit tightly to the outside of the insulation support column 2, effectively preventing external moisture from penetrating into the inside of the power distribution cabinet 1 along the insulation support column 2. The bottom of the waterproof isolation pad 3 is fixedly connected to the base 4.

[0033] The base 4 is a rectangular plate-like structure with a regular and flat shape, providing a stable bottom support platform for the entire power supply and distribution equipment. It is made of a sturdy metal material with a certain load-bearing capacity, such as cast iron. The cast iron base 4 is relatively heavy, increasing the stability of the entire equipment and preventing it from shaking or tipping over in the complex underground environment of coal mines. It also has good corrosion resistance, adapting to the corrosive environment present underground. The waterproof isolation pad 3 is fixedly connected to the top front end to an insulating standing pad 5. The insulating standing pad 5 is a rectangular plate-like structure made of rubber with excellent insulation properties, such as silicone rubber. The insulating standing mat 5 provides a safe standing position for operators when working or maintaining the power distribution cabinet 1, ensuring that personnel will not be electrocuted by contact with the ground. Its surface has anti-slip texture to prevent personnel from slipping. The waterproof isolation mat 3 is fixedly connected to the insulating guardrail 6 on three sides inside. The insulating guardrail 6 surrounds the power distribution cabinet 1 and the base 4, playing a role in isolation and protection, preventing personnel from accidentally coming into contact with live parts or getting close to the power distribution cabinet 1 and causing danger. Its material is a plastic material with good insulation properties, such as polyvinyl chloride plastic, forming a stable protective structure to ensure that it can effectively block personnel from approaching without affecting the normal operation and maintenance of the equipment.

[0034] A protective component providing power-off function is fixedly connected to the upper left side of the internal side of the power distribution cabinet 1. This protective component includes an overload protector 7. The overload protector 7 is an electrical protection element with a specific shape and internal circuit structure. Its outer shell is typically made of robust and heat-resistant engineering plastic, protecting the delicate internal electronic circuits and mechanical structures. It can also withstand the heat generated by overload current during prolonged operation, preventing overheating from affecting its performance and lifespan. The external rear side of the overload protector 7 is fixedly connected to the upper left side of the internal side of the power distribution cabinet 1. The upper left side of the device is fixedly connected to a residual current device (RCD 8). The RCD 8 is an electrical protection device with a rectangular shape. Its shell is made of high-strength engineering plastic with good insulation properties. The device contains core components such as a zero-sequence current transformer, a comparator amplifier, and a trip unit. The working principle is to detect the residual current (i.e., leakage current) in the circuit through the zero-sequence current transformer. When the residual current exceeds the set safety value, the comparator amplifier will output a signal to trigger the trip unit to quickly cut off the circuit and prevent electric shock and electrical fires caused by leakage.

[0035] Reference Figure 1 , Figure 2 and Figure 4 A dust filter plate 9 is fixedly connected to the upper rear side of the power distribution cabinet 1. The dust filter plate 9 has a plate-like structure with fine pores. It is made of corrosion-resistant and strong metal material, such as stainless steel. Its main function is to prevent dust and other impurities from entering the cabinet through the air inlet on the rear side of the power distribution cabinet 1, so as to avoid dust accumulation on the surface of electrical components, which would affect the heat dissipation and normal operation of the components. At the same time, it will not excessively obstruct the airflow, ensuring the normal realization of the heat dissipation function. A small cooling fan 10 is rotatably connected to the front side of the dust filter plate 9. The small cooling fan 10 has a wheel-like structure with multiple blades. Its blades are made of lightweight and high-strength engineering plastic. When the temperature inside the cabinet rises, the small cooling fan 10 will increase its rotation speed to enhance airflow and improve heat dissipation efficiency. The front side of the small cooling fan 10 is fixedly connected to the rear side of the condenser 11, and the exterior of the small cooling fan 10 is slidably connected to the left and right sides of the upper interior of the power distribution cabinet 1.

[0036] A condenser 11 is fixedly connected to the upper rear side of the internal rear of the power distribution cabinet 1. The condenser 11 is a heat exchange device with a specific shape and internal heat exchange structure. Its outer shell is made of metal, such as copper alloy. Copper alloy has good thermal conductivity, which is conducive to the rapid transfer and exchange of heat. The airflow generated by the rotation of the small cooling fan 10 can accelerate the dissipation of heat from the surface of the condenser 11, improve its heat exchange efficiency, and ensure that the internal temperature of the power distribution cabinet 1 is within a suitable range. An evaporator 12 is fixedly connected to the right side of the condenser 11. The evaporator 12 is a device with an internal heat exchange structure similar to the condenser 11, and its material is also a metal. The evaporator 12, made of a metal material with good thermal properties, plays a role in the refrigeration cycle system by absorbing heat and changing the refrigerant from a liquid to a gaseous state. It is connected to the condenser 11 through a pipe to form a complete refrigeration cycle loop, realizing the transfer and dissipation of heat inside the power distribution cabinet 1, ensuring that the temperature of the equipment does not become too high during operation and maintaining a good working environment. Multiple extra-large air inlets 16 are opened on the inner rear surface of the power distribution cabinet 1. The inner wall of the air inlet is relatively smooth, which facilitates the smooth flow of air. Multiple air inlets are evenly distributed on the inner rear surface of the power distribution cabinet 1, which allows a large amount of cold air from the outside to enter the cabinet, providing a sufficient cold source for the heat dissipation system.

[0037] A cooling heat dissipation component is fixedly connected to the lower rear side of the internal rear of the power distribution cabinet 1. This component includes a semiconductor cooling plate 13, which is a sheet-like electronic cooling element made of a composite of various semiconductor materials. It has a special PN junction structure and, by applying direct current, utilizes the Peltier effect to achieve cooling at one end and heating at the other. This reduces the temperature in the lower region of the power distribution cabinet 1, creating a more suitable low-temperature operating environment for electrical components and reducing damage to component performance and lifespan caused by excessively high temperatures. Two water-cooled transport pipes 14 are fixedly connected to the top of the semiconductor cooling plate 13. These pipes are long and thin, made of a thermally conductive and corrosion-resistant metal material, such as copper, which can quickly heat the semiconductor cooling plate 13. The heat is transferred away, and the water-cooled transport pipes 14 are arranged along the path on top of the semiconductor cooling plate 13. Coolant circulates inside, and the coolant carries away the heat after absorbing it, thereby dissipating heat from the semiconductor cooling plate 13 and ensuring that it can continuously and stably perform cooling work. The other end of the two water-cooled transport pipes 14 is fixedly connected to a small storage tank 15. The small storage tank 15 is a barrel-shaped structure with a certain volume. Its material is a corrosion-resistant and sturdy plastic material, such as polyethylene plastic, which provides a basis for the storage and circulation of coolant for the water-cooled transport pipes 14. This ensures that the coolant can circulate stably throughout the heat dissipation system, maintain the normal working state of the semiconductor cooling plate 13, and ensure that the entire heat dissipation component can effectively cool the inside of the power distribution cabinet 1, ensuring the safe and stable operation of the power distribution equipment.

[0038] Working Principle: First, in the humid environment of an underground coal mine, the power distribution cabinet 1, with its sturdy metal casing and rust-proof treatment, is connected to the base 4 via an insulating support column 2. The insulating support column 2 effectively isolates the cabinet from the ground, preventing leakage. The waterproof isolation pad 3, by tightly fitting against the insulating support column 2, prevents external moisture from penetrating into the cabinet. Inside the power distribution cabinet 1, overload protectors 7 and leakage current protectors 8 serve as safety components, monitoring the current in real time. When the current is abnormal, the overload protector 7 cuts off the power supply to prevent equipment damage; the leakage current protector 8 detects leakage current through a zero-sequence current transformer. Once leakage is detected, it immediately triggers the trip unit to cut off the circuit, ensuring personnel safety. Furthermore, maintenance personnel stand on the insulating standing mat 5 during maintenance, further enhancing safety.

[0039] To maintain the internal temperature within a suitable range, the power distribution cabinet 1 is equipped with a heat dissipation component. A small cooling fan 10 accelerates its rotation when the internal temperature rises, promoting airflow and improving heat dissipation efficiency. The condenser 11 and evaporator 12 together form a refrigeration cycle system. The condenser 11 dissipates heat through the airflow of the small cooling fan 10, while the evaporator 12 absorbs heat, ensuring a stable internal temperature. Furthermore, the semiconductor cooling plate 13 achieves cooling through the Peltier effect; the heat generated is rapidly dissipated through the water-cooled transport pipe 14, and the coolant circulates in a small storage tank 15, ensuring the efficient operation of the cooling system. Finally, the dust filter plate 9 at the rear of the power distribution cabinet 1 effectively prevents dust from entering the cabinet, ensuring normal heat dissipation and operation of the electrical components. Through the coordinated work of all components, the entire system ensures the safe and stable operation of the power distribution equipment in the coal mine environment.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A shockproof coal mine power supply and distribution device, comprising a power supply and distribution cabinet (1), characterized in that: The bottom of the power distribution cabinet (1) is fixedly connected to multiple insulating support columns (2), and the outside of the insulating support columns (2) is slidably connected to a waterproof isolation pad (3). The bottom of the waterproof isolation pad (3) is fixedly connected to a base (4). The top front end of the waterproof isolation pad (3) is fixedly connected to an insulating standing pad (5). The three sides of the inside of the waterproof isolation pad (3) are fixedly connected to an insulating protective railing (6). The upper left side of the inside of the power distribution cabinet (1) is fixedly connected to a protective component that provides power-off function.

2. The electric shock prevention power supply and distribution equipment for coal mine according to claim 1, characterized in that: The protective assembly includes an overload protector (7), the outer rear side of which is fixedly connected to the upper left side of the power distribution cabinet (1), and a leakage current protector (8) is fixedly connected to the upper left side of the power distribution cabinet (1).

3. The electric shock prevention power supply and distribution equipment for coal mine according to claim 1, characterized in that: A dust filter plate (9) is fixedly connected to the upper rear side of the power supply and distribution cabinet (1), and a small cooling fan (10) is rotatably connected to the front side of the dust filter plate (9).

4. The electric shock prevention power supply and distribution equipment for coal mine according to claim 3, characterized in that: A condenser (11) is fixedly connected to the upper rear side of the power distribution cabinet (1), and an evaporator (12) is fixedly connected to the right side of the condenser (11).

5. The electric shock prevention power supply and distribution equipment for coal mine according to claim 1, characterized in that: The power distribution cabinet (1) has multiple large air inlets (16) on its inner rear surface, and a heat dissipation component for cooling is fixedly connected to the lower inner rear side of the power distribution cabinet (1).

6. The electric shock prevention power supply and distribution device for coal mine according to claim 5, characterized in that: The heat dissipation assembly includes a semiconductor cooling plate (13), and two water-cooled transport pipes (14) are fixedly connected to the top of the semiconductor cooling plate (13). A small storage tank (15) is fixedly connected to the other end of the two water-cooled transport pipes (14).

7. The electric shock prevention power supply and distribution equipment for coal mine according to claim 4, characterized in that: The small cooling fan (10) is fixedly connected to the front of the condenser (11) and slidably connected to the upper left and right sides of the power supply and distribution cabinet (1).

8. The electric shock prevention power supply and distribution device for coal mine according to claim 1, characterized in that: The bottom of the insulating support column (2) is fixedly connected to the top of the base (4), and the top of the base (4) is fixedly connected to the bottom of the insulating guardrail (6) around its perimeter.

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