Coal mine circuit leakage protection device

Abstract

The utility model discloses a coal mine circuit leakage protection device, which comprises a cabinet door arranged at the front side of a cabinet body, a heat exchange plate arranged in the cabinet body, heat dissipation mechanisms arranged at the rear side of the heat exchange plate and on the cabinet body, a main control computer, a data receiver and a circuit breaker arranged on the heat exchange plate, the current sensors are distributed on an underground circuit cable at intervals, wireless transmission chips are arranged on the current sensors, and prompting mechanisms are arranged on the cabinet body and the cabinet door; according to the utility model, through the water-cooling and air-cooling dual heat dissipation mechanism, heat generated by electric appliance elements in the cabinet body of the protection device can be effectively dissipated, the electric appliance elements in the protection device are effectively protected, the service life is prolonged, and through cooperation of the current sensor and the prompting mechanism, a cable leakage segment can be efficiently detected and positioned and alarm prompting is carried out. And the intelligent degree is high.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit protection, in particular to a circuit leakage protection device for a coal mine. Background Art

[0002] A coal mine power system is usually built underground in coal mines. In the power supply lines of the coal mine power system, electrical equipment may fail due to insulation failure, and current paths may be formed between lines, between lines and ground, and between working circuits and non-energized metal shells and frames, resulting in leakage. Leakage may cause the risk of explosion of flammable and explosive gas in coal mines, causing serious mining accidents. Therefore, leakage protection devices for underground circuits in coal mines are extremely important.

[0003] The air in the underground environment of coal mines is humid and the air circulation is poor, and the existing coal mine leakage protection devices have poor heat dissipation. For example, a coal mine high-voltage leakage protection device disclosed in application number 202321528783.1 does not have any heat dissipation structure inside the cabinet. In addition, the internal electrical components generate heat during operation, and the internal heat cannot be dissipated, causing the protection device to be damaged and fail, causing underground circuit failures. Therefore, the utility model proposes a coal mine circuit leakage protection device to solve the problems existing in the prior art. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to propose a coal mine circuit leakage protection device, which can effectively dissipate the heat generated by the working electrical components inside the protection device cabinet through the dual heat dissipation mechanisms of water cooling and air cooling, effectively protecting the electrical components inside the protection device and extending the service life. At the same time, the dust filter and drying net box at the air inlet prevent the entry of coal dust into the cabinet, and also ensure the internal dryness, preventing coal dust from entering and affecting the operation of the electrical components after being damp. In addition, the current sensor and the prompt mechanism can efficiently detect and locate the leakage section of the cable and give an alarm, with a high degree of intelligence.

[0005] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a coal mine circuit leakage protection device, including a cabinet, a cabinet door, a heat exchange plate, a heat dissipation mechanism, a main control machine, a data receiver, a circuit breaker, a current sensor, a wireless transmission chip and a prompt mechanism, the cabinet front side is hinged with a cabinet door, a heat exchange plate is overhead arranged in the cabinet, the rear side of the heat exchange plate and the cabinet are provided with a heat dissipation mechanism, the heat dissipation mechanism includes an air-cooled heat dissipation mechanism and a liquid-cooled heat dissipation mechanism, and the double heat dissipation effect is better, the heat exchange plate is provided with a main control machine, a data receiver and a circuit breaker, the current sensors are arranged at intervals on the underground circuit cables, the current sensors are provided with a wireless transmission chip, and the cabinet and the cabinet door are provided with a prompt mechanism; the current data of different sections of the cable are detected by the separated current sensors, and the current data is sent to the data receiver in the cabinet through the wireless transmission chip, and the data receiver pre-processes and transmits it to the main control machine for calculation and judgment processing, and the judgment result is sent to the prompt mechanism for real-time display and prompting.

[0006] A further improvement is that the air-cooling heat dissipation mechanism includes an air inlet, an air outlet, a dust filter, a blowing fan and a drying net box. The air inlet is symmetrically arranged on one side of the cabinet, and the air outlet is arranged on the other side of the cabinet. The dust filter is removably arranged in the air inlet and the air outlet, a blowing fan is arranged in the air inlet, and a drying net box is removably arranged in the air inlet inside the blowing fan.

[0007] Further improvements are: the liquid cooling heat dissipation mechanism includes a heat exchange coil, a fluid pump, an outer cover, a heat sink, a cooling fan and an air inlet hole; the heat exchange coil is embedded on the rear side of the heat exchange plate; a fluid pump is provided on the heat exchange coil located on the lower side of the cabinet; the circulation of the heat exchange medium inside the heat exchange coil is controlled by the fluid pump; an outer cover is fixedly provided on the outer side of the cabinet; a heat sink is provided inside the outer cover; the heat sinks are symmetrically distributed in multiple groups; the heat exchange coil passes through the cabinet and is inserted in the heat sink; a cooling fan is provided in the outer cover inside the heat sink; the cooling fan blows air outward; air inlets are distributed on the outer cover on the rear side of the cooling fan; a dust filter is also provided on the outside of the air inlet hole.

[0008] Further improvements are: the prompt mechanism includes an audible and visual alarm, a control circuit board, a digital display screen and an indicator light; the audible and visual alarm is arranged above the cabinet body; the control circuit board is symmetrically distributed on the inner side of the cabinet door; the digital display screen and the indicator light are arranged on the front side of the control circuit board through the cabinet door seal; the audible and visual alarm and the control circuit board are electrically connected to the main control machine; the line current data is displayed on the digital display screen through the main control machine, and the judgment result of whether there is leakage is displayed by the indicator light, red for leakage and green for normal; the audible and visual alarm is green when there is no leakage, and it turns red and flashes and a buzzer alarm is issued when a certain leakage occurs.

[0009] Further improvements are: a protective box is provided on the current sensor, the wireless transmission chip is arranged in the protective box, the wireless transmission chip is electrically connected to the current sensor, the data detected by the current sensor is sent out through the wireless transmission chip, the wireless transmission chip is wirelessly interconnected with the data receiver, the data receiver receives the current detection data sent by each current sensor and performs pre-processing such as denoising, the circuit breaker is connected to the cable of the underground circuit of the coal mine, the circuit breaker and the data receiver are electrically connected to the main control machine, and when a certain section of leakage occurs, the circuit breaker immediately cuts off the power transmission of a section of the cable protected by the protection device.

[0010] A further improvement is that a T-shaped plug strip is symmetrically arranged on the rear side of the cabinet, a plug mounting seat is adapted to be arranged on the T-shaped plug strip, and the plug mounting seat is fixedly installed on the wall of the underground passage of the coal mine.

[0011] The beneficial effects of the utility model are as follows: the utility model can effectively dissipate the heat generated by the working electrical components inside the protection device cabinet through the dual heat dissipation mechanism of water cooling and air cooling, effectively protect the electrical components inside the protection device and extend the service life; at the same time, the dust filter and the drying net box at the air inlet are arranged to prevent coal dust from entering the cabinet, and also ensure internal dryness, preventing coal dust from entering and affecting the operation of the electrical components after being damp; and the current sensor and the prompt mechanism can efficiently detect and locate the leakage section of the cable and give an alarm, with a high degree of intelligence and improved practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the main structural diagram of the utility model.

[0013] Figure 2 This is a front sectional view of the cabinet of the utility model.

[0014] Figure 3 It is a side sectional view of the utility model.

[0015] Among them: 1. Cabinet; 2. Cabinet door; 3. Heat exchange plate; 4. Main control machine; 5. Data receiver; 6. Circuit breaker; 7. Current sensor; 8. Wireless transmission chip; 9. Air inlet; 10. Air outlet; 11. Dust filter; 12. Blowing fan; 13. Drying net box; 14. Heat exchange coil; 15. Fluid pump; 16. Outer cover; 17. Heat sink; 18. Cooling fan; 19. Air inlet; 20. Sound and light alarm; 21. Control circuit board; 22. Digital display; 23. Indicator light; 24. Protective box; 25. T-type connector strip; 26. Plug-in mounting socket. DETAILED DESCRIPTION

[0016] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0017] according to Figure 1 , Figure 2 and Figure 3 As shown, this embodiment provides a coal mine circuit leakage protection device, including a cabinet 1, a cabinet door 2, a heat exchange plate 3, a heat dissipation mechanism, a main control machine 4, a data receiver 5, a circuit breaker 6, a current sensor 7, a wireless transmission chip 8 and a prompt mechanism. The cabinet 1 is hingedly provided with a cabinet door 2 on the front side, and a heat exchange plate 3 is overhead arranged in the cabinet 1. A heat dissipation mechanism is arranged on the rear side of the heat exchange plate 3 and the cabinet 1. The heat dissipation mechanism includes an air-cooled heat dissipation mechanism and a liquid-cooled heat dissipation mechanism, and the double heat dissipation effect is better. The main control machine 4, the data receiver 5 and the circuit breaker 6 are arranged on the heat exchange plate 3, and the current sensors 7 are arranged on the underground circuit cables at intervals. The current sensor 7 is provided with a wireless transmission chip 8, and a prompt mechanism is provided on the cabinet 1 and the cabinet door 2.

[0018] The current data of different sections of the cable are detected by the current sensors arranged separately, and the current data is sent to the data receiver in the cabinet through the wireless transmission chip. After pre-processing by the data receiver, it is transmitted to the main control machine for calculation and judgment processing, and the judgment result is sent to the prompt mechanism for real-time display prompt.

[0019] The air-cooling heat dissipation mechanism includes an air inlet 9, an air outlet 10, a dust filter 11, a blowing fan 12 and a drying net box 13. The air inlet 9 is symmetrically arranged on one side of the cabinet 1, and the air outlet 10 is arranged on the other side of the cabinet 1. The dust filter 11 is removably arranged in the air inlet 9 and the air outlet 10. The blowing fan 12 is arranged in the air inlet 9, and the drying net box 13 is removably arranged in the air inlet 9 inside the blowing fan 12. While filtering dust, it ensures that the air entering the cabinet is dry air to prevent humid air from entering and affecting the service life of internal electrical components.

[0020] The liquid cooling mechanism includes a heat exchange coil 14, a fluid pump 15, an outer cover 16, a heat sink 17, a cooling fan 18 and an air inlet 19. The heat exchange coil 14 is embedded on the rear side of the heat exchange plate 3. A fluid pump 15 is provided on the heat exchange coil 14 located on the lower side of the cabinet 1. The circulation of the heat exchange medium inside the heat exchange coil is controlled by the fluid pump. An outer cover 16 is fixedly provided on one side outside the cabinet 1. Heat sinks 17 are provided in the outer cover 16. The heat sinks are symmetrically distributed in multiple groups. The heat exchange coil 14 passes through the cabinet 1 and is inserted into the heat sink 17. A cooling fan 18 is provided in the outer cover 16 inside the heat sink 17. The cooling fan blows air outward. Air inlets 19 are distributed on the outer cover 16 on the rear side of the cooling fan 18. A dust filter 11 is also provided on the outside of the air inlet 19.

[0021] The prompt mechanism includes an audible and visual alarm 20, a control circuit board 21, a digital display screen 22 and an indicator light 23. The audible and visual alarm 20 is arranged above the cabinet body 1, and the control circuit board 21 is symmetrically distributed on the inner side of the cabinet door 2. The digital display screen 22 and the indicator light 23 are sealed and arranged on the front side of the control circuit board 21 through the cabinet door 2. The audible and visual alarm 20 and the control circuit board 21 are electrically connected to the main control machine 4. The line current data is displayed on the digital display screen through the main control machine, and the judgment result of whether there is leakage is displayed by the indicator light, red for leakage and green for normal; the audible and visual alarm is green when there is no leakage, and it turns red and flashes and a buzzer alarm is issued when a certain leakage occurs.

[0022] A protective box 24 is provided on the current sensor 7, and a wireless transmission chip 8 is provided in the protective box 24. The wireless transmission chip 8 is electrically connected to the current sensor 7, and the data detected by the current sensor is sent out through the wireless transmission chip. The wireless transmission chip 8 is wirelessly interconnected with the data receiver 5, and the data receiver receives the current detection data sent by each current sensor and performs pre-processing such as denoising. The circuit breaker 6 is connected to the cable of the underground circuit of the coal mine, and the circuit breaker 6 and the data receiver 5 are electrically connected to the main control machine 4. When a certain section of leakage occurs, the circuit breaker immediately cuts off the power transmission of a section of the cable protected by the protection device.

[0023] A T-shaped plug strip 25 is symmetrically arranged on the rear side of the cabinet 1, and a plug mounting seat 26 is adapted to be arranged on the T-shaped plug strip 25. The plug mounting seat 26 is fixedly installed on the wall of the underground passage of the coal mine, and the protective device is installed by adapting the T-shaped plug strip and the plug mounting seat.

[0024] When the coal mine circuit leakage protection device is in use, the cabinet is fixedly installed on the wall of the underground tunnel, and then a section of cable is connected. At the same time, multiple groups of current sensors matching the wireless signal of the protection device are arranged at intervals on a section of cable behind the protection device cabinet. Then the equipment is started for real-time detection.

[0025] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A coal mine circuit leakage protection device, characterized in that: The invention comprises a cabinet (1), a cabinet door (2), a heat exchange plate (3), a heat dissipation mechanism, a main control machine (4), a data receiver (5), a circuit breaker (6), a current sensor (7), a wireless transmission chip (8) and a prompting mechanism. The cabinet (1) is provided with a cabinet door (2) at the front side, a heat exchange plate (3) is provided inside the cabinet (1), a heat dissipation mechanism is provided at the rear side of the heat exchange plate (3) and on the cabinet (1), the heat dissipation mechanism comprises an air cooling heat dissipation mechanism and a liquid cooling heat dissipation mechanism, a main control machine (4), a data receiver (5) and a circuit breaker (6) are provided on the heat exchange plate (3), the current sensor (7) is arranged at intervals on the downhole circuit cable, the current sensor (7) is provided with a wireless transmission chip (8), and a prompting mechanism is provided on the cabinet (1) and the cabinet door (2).

2. A coal mine circuit leakage protection device according to claim 1, characterized in that: The air-cooling heat dissipation mechanism comprises an air inlet (9), an air outlet (10), a dust filter (11), a blowing fan (12) and a drying net box (13); the air inlet (9) is symmetrically arranged on one side of the cabinet (1), and the air outlet (10) is arranged on the other side of the cabinet (1); the dust filter (11) is arranged in the air inlet (9) and the air outlet (10); the blowing fan (12) is arranged in the air inlet (9), and the drying net box (13) is arranged in the air inlet (9) inside the blowing fan (12).

3. A coal mine circuit leakage protection device according to claim 1, characterized in that: The liquid cooling heat dissipation mechanism comprises a heat exchange coil (14), a fluid pump (15), an outer cover (16), a heat sink (17), a cooling fan (18) and an air inlet (19); a heat exchange coil (14) is embedded on the rear side of the heat exchange plate (3); a fluid pump (15) is provided on the heat exchange coil (14) located on the lower side of the cabinet (1); an outer cover (16) is provided on the outer side of the cabinet (1); a heat sink (17) is provided inside the outer cover (16); the heat exchange coil (14) passes through the cabinet (1) and is arranged in the heat sink (17); a cooling fan (18) is provided in the outer cover (16) inside the heat sink (17); air inlets (19) are distributed on the outer cover (16) on the rear side of the cooling fan (18); and a dust filter (11) is also provided on the outside of the air inlet (19).

4. A coal mine circuit leakage protection device according to claim 1, characterized in that: The prompt mechanism comprises an audible and visual alarm (20), a control circuit board (21), a digital display screen (22) and an indicator light (23); the audible and visual alarm (20) is arranged above the cabinet (1); the control circuit board (21) is symmetrically distributed inside the cabinet door (2); the digital display screen (22) and the indicator light (23) are sealed and arranged on the front side of the control circuit board (21) through the cabinet door (2); the audible and visual alarm (20) and the control circuit board (21) are electrically connected to a main control machine (4).

5. A coal mine circuit leakage protection device according to claim 1, characterized in that: The current sensor (7) is provided with a protection box (24), the wireless transmission chip (8) is arranged in the protection box (24), the wireless transmission chip (8) is electrically connected to the current sensor (7), the wireless transmission chip (8) is wirelessly interconnected with the data receiver (5), the circuit breaker (6) is connected to the cable of the underground circuit of the coal mine, and the circuit breaker (6) and the data receiver (5) are electrically connected to the main control machine (4).

6. A coal mine circuit leakage protection device according to claim 1, characterized in that: The cabinet (1) is symmetrically provided with a T-shaped plug strip (25) on the rear side, and a plug mounting seat (26) is adapted to be provided on the T-shaped plug strip (25), and the plug mounting seat (26) is fixedly installed on the wall of the underground passage of the coal mine.

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