Movable high-voltage power transformation system of drilling machine for strip mine

Abstract

The utility model relates to a movable high-voltage power transformation system of a drilling machine for a strip mine. A dehumidifying and drying device, a high-voltage transformer, a cable control cabinet, a low-voltage control cabinet and an energy safety isolation device are arranged on the traction device; the cable control cabinet is connected with the high-voltage transformer through a first cable; the high-voltage transformer is connected with the low-voltage control cabinet through a second cable; the dehumidifying and drying device is connected with the low-voltage control cabinet; the traction device is provided with a protective shell, and the dehumidification drying device, the high-voltage transformer, the cable control cabinet and the low-voltage control cabinet are all located in the protective shell. The protective shell is provided with an openable shell door; one end of the shell door is hinged to the protective shell; the energy safety isolation device comprises a first built-in power supply, an alarm lamp and a contact switch; the alarm lamp is arranged at the top of the protective shell; the contact switch is arranged on the protective shell and corresponds to the shell door; the alarm lamp is connected with the contact switch; and the first built-in power supply is connected with the alarm lamp through the contact switch.

Description

Technical Field

[0001] This utility model belongs to the field of transformer systems for power distribution equipment in mining machinery, specifically a mobile high-voltage transformer system for open-pit mine drilling rigs. Background Technology

[0002] In open-pit mining, due to the uneven distribution of ore resources, mining equipment needs to be moved periodically according to production needs. Ensuring a stable power supply to the mining equipment is a crucial aspect. Cable control cabinets and high-voltage transformers are typically installed around the mining equipment. The transformer facilities around the drilling rig need to be relocated along with the rig. Traditionally, the high-voltage transformer and cable control cabinet are installed separately, which undoubtedly increases the complexity of equipment relocation. Each relocation requires significant manpower and resources because two pieces of equipment need to be handled separately. Furthermore, since these two pieces of equipment are not a single unit, the difficulty of maintenance and repair also increases, thereby increasing relocation and maintenance costs. Utility Model Content

[0003] To address the aforementioned issues, the purpose of this utility model is to provide a mobile high-voltage power conversion system for open-pit mine drilling rigs. This system integrates high-voltage transformers, low-voltage control cabinets, and safety isolation devices into a mobile high-voltage power conversion system for open-pit mines. While enabling remote high-voltage power conversion for on-site operation, it also boasts advantages such as high mobility, ease of maintenance, and remote monitoring capabilities. This significantly reduces the cost of equipment relocation and maintenance, and improves the mining efficiency of open-pit mines.

[0004] This utility model discloses a mobile high-voltage substation system for open-pit mining drilling rigs, comprising a traction device; the traction device is equipped with a dehumidification and drying device, a high-voltage transformer, a cable control cabinet, a low-voltage control cabinet, and an energy safety isolation device; the cable control cabinet is connected to the high-voltage transformer via a first cable; the high-voltage transformer is connected to the low-voltage control cabinet via a second cable; and the dehumidification and drying device is connected to the low-voltage control cabinet.

[0005] The traction device is equipped with a protective housing, and the dehumidification and drying device, high-voltage transformer, cable control cabinet and low-voltage control cabinet are all located inside the protective housing;

[0006] The protective housing is provided with an openable and closable door; one end of the door is hinged to the protective housing; the energy safety isolation device includes a first built-in power supply, an alarm light, and a contact switch; the alarm light is located on the top of the protective housing; the contact switch is located on the protective housing, corresponding to the door; the alarm light is connected to the contact switch; the first built-in power supply is connected to the alarm light through the contact switch.

[0007] A further improvement of this utility model is that a cooling fan is provided on the protective housing, and the cooling fan is connected to the low-voltage control cabinet.

[0008] A further improvement of this utility model is that a lightning rod and a wireless meter reading device are provided on the top of the protective shell.

[0009] A further improvement of this utility model is that a plurality of heat dissipation grooves are provided on the shell door.

[0010] A further improvement of this utility model is that the energy safety isolation device further includes a buzzer, which is connected to a contact switch.

[0011] A further improvement of this utility model is that the protective shell is provided with an isolation plate, the high-voltage transformer is located on one side of the isolation plate, and the cable control cabinet is located on the other side of the isolation plate.

[0012] A further improvement of this utility model is that two dehumidification and drying devices are provided, one dehumidification and drying device is located on one side of the isolation plate, and the other dehumidification and drying device is located on the other side of the isolation plate.

[0013] A further improvement of this utility model is that the traction device includes a frame and a traction head, the traction head is disposed on one side of the frame, the protective shell is disposed on the frame, and the bottom of the frame is provided with a traveling wheel.

[0014] The beneficial effects of this utility model are:

[0015] This utility model's high-voltage substation system integrates the high-voltage transformer and control cabinet into a single unit. The protective casing offers excellent dust and water resistance, ensuring stable operation even in harsh environments. Traditional methods, when drilling rig wiring issues arise, require checking not only the drilling rig wiring but also the wiring at the beginning and end of the high-voltage transformer and cable control cabinet. However, with the portable high-voltage substation system, only the wiring at the beginning and end of the cables within the protective casing of the portable high-voltage substation needs to be checked, shortening the maintenance process and improving drilling rig efficiency.

[0016] This invention uses a wireless meter reading device to transmit the working status of the equipment to a remote monitoring center in real time, thereby reducing the management cost of the equipment.

[0017] This utility model's energy safety isolation device can immediately cut off power and sound an alarm when someone attempts to open the protective casing, improving equipment safety. This utility model, through temperature and humidity sensors and a cooling fan, can automatically adjust the equipment's operating environment to prevent malfunctions due to excessive humidity or temperature.

[0018] The high-voltage substation system of this invention has a relatively flexible traction device, which can be towed by auxiliary vehicles to achieve rapid movement, thereby improving the mobility of the equipment and facilitating its scheduling and use.

[0019] This invention employs various sensors and automatic adjustment devices, improving the intelligence and automation level of the equipment. The high-voltage substation system of this invention is adapted to the harsh working environment of open-pit mines and has broad application prospects. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram (I) of the high-voltage substation system of this utility model;

[0022] Figure 2 This is a schematic diagram (II) of the high-voltage substation system of this utility model;

[0023] Figure 3 This is a schematic diagram (I) of the interior of the protective shell of the high-voltage substation system of this utility model.

[0024] Figure 4 This is a schematic diagram (II) of the interior of the protective shell of the high-voltage substation system of this utility model.

[0025] Figure 5 This is a schematic diagram (III) of the high-voltage substation system of this utility model;

[0026] Figure 6 This is a schematic diagram of the working logic of the high-voltage substation system of this utility model.

[0027] Explanation of reference numerals in the attached figures

[0028] 1. Traction device; 2. Dehumidification and drying device; 3. High-voltage transformer; 4. Cable control cabinet; 5. Low-voltage control cabinet; 6. Cooling fan; 7. Alarm light; 8. Door; 9. Protective enclosure; 10. Wireless meter reading device; 11. Lightning rod. Detailed Implementation

[0029] The technical solutions in the embodiments of this utility model are described clearly and completely below. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0030] The purpose of this utility model is to provide a mobile high-voltage power conversion system for open-pit mine drilling rigs. This system integrates high-voltage transformers, low-voltage control cabinets, safety isolation devices, and other components into a mobile high-voltage power conversion system for open-pit mines. While enabling remote high-voltage power conversion for on-site operation, it also boasts advantages such as high mobility, easy maintenance, and remote monitoring, greatly reducing equipment relocation and maintenance costs and improving the mining efficiency of open-pit mines.

[0031] This utility model discloses a mobile high-voltage substation system for open-pit mining drilling rigs, used to convert 6000V high-voltage transmission voltage to the normal operating voltage of 400V for the open-pit mining drilling rig. The high-voltage substation system includes a traction device 1, a dehumidification and drying device 2, a high-voltage transformer 3, a cable control cabinet 4, a low-voltage control cabinet 5, and an energy safety isolation device. The cable control cabinet 4 is connected to the high-voltage transformer 3 via a first cable; the high-voltage transformer 3 is connected to the low-voltage control cabinet 5 via a second cable, as shown below. Figures 1-6 As shown. The various components of this utility model can be fixed to the traction device 1 with bolts to ensure the stability of the internal devices such as the high-voltage transformer 3, the dehumidification and drying device 2, and the cable control cabinet 4 during its movement.

[0032] The traction device 1 is used to support other devices in the substation system, enabling the high-voltage substation system to move. The traction device 1 includes a frame and a traction head, which is located on one side of the frame. The traction head of the traction device 1 has a certain degree of flexibility, facilitating connection with an auxiliary vehicle. The system can be quickly moved by towing the auxiliary vehicle. The bottom of the frame has wheels. The traction device 1 adopts a four-wheel chassis design, ensuring a simple and lightweight structure while guaranteeing stable movement. The wheelbase between the tires is longer than the width of the protective shell, effectively preventing the high-voltage substation system from tipping over during movement.

[0033] A protective housing 9 is installed on the frame of the traction device 1, and the connection between the protective housing 1 and the protective housing 9 is made by a connecting pin. Doors 8 are provided on both sides of the protective housing 9, facilitating access and inspection of the interior. One end of each door 8 is hinged to the protective housing 9. A cooling fan 6 (exhaust fan) is installed on the protective housing 9. Several heat dissipation slots or windows are provided on each door 8.

[0034] The dehumidification and drying device 2, high-voltage transformer 3, cable control cabinet 4, and low-voltage control cabinet 5 are all housed inside the protective casing 9. Figure 3 , Figure 4 , Figure 5As shown, an isolation plate is installed in the middle of the protective housing 9. The high-voltage transformer 3 is located on one side of the isolation plate, the low-voltage control cabinet 5 is located on the other side of the isolation plate, and the cable control cabinet 4 is on the same side as the low-voltage control cabinet 5. Preferably, the low-voltage control cabinet 5 is installed on the isolation plate. Two dehumidification and drying devices 2 are provided, one on one side of the isolation plate and the other on the other side of the isolation plate, so that the entire interior of the protective housing 9 can be dehumidified and dried.

[0035] The dehumidification and drying unit 2 consists of a dryer and a temperature and humidity sensor. The dryer is model CS260Z, with a rated operating voltage of AC220V±10%, DIN35 rail mounting, a rated power of 36W, an operating ambient temperature of -40℃ to 70℃, an operating ambient humidity of 20%RH to 99%RH, a dehumidification capacity of 250ml / 24h, and is suitable for spaces <3m³. The temperature and humidity sensor is digital, calibration-free, with a temperature detection accuracy of 1℃, a dehumidification operating temperature range of 0℃ to 60℃, a dehumidification operating humidity range of 20%RH to 99%RH, a dehumidification method of condensate drainage, a dehumidification control method of automatic or manual, a threshold adjustment range of 20%RH to 99%RH, a dehumidification threshold adjustment resolution of 1%RH, a flexible hose for drainage, a digital tube display screen, an external leakage protection switch for leakage protection, a 1.5-meter ≥1m³ soft copper core wire for power supply, and Zigbee communication. The sensor is responsible for detecting changes in humidity and temperature in the surrounding environment of the equipment. When the ambient humidity is greater than 70%, the dryer will be automatically started to dehumidify. When the equipment temperature is 80°C higher than the ambient temperature, the monitoring device will issue an alarm, increase the speed of the cooling fan, reduce the internal temperature, and remind the staff that the equipment is operating too hot and needs to be inspected and maintained.

[0036] Cable control cabinet 4 can connect to the cable on the high-voltage power pole. Cable control cabinet 4 is connected to high-voltage transformer 3 via the first cable. Cable control cabinet 4 can control the current flow between the high-voltage power pole and high-voltage transformer 3, preventing high-voltage cable grounding from affecting normal production. High-voltage transformer 3 is a 6kV S11 type three-phase double-winding off-grid voltage regulating distribution transformer with a connection group designation of Yyn0 and an insulation level of LI75AC35. It can convert 6000V long-distance high voltage to 400V drilling rig operating voltage. There are no devices within 1m of high-voltage transformer 3. The first cable is a 6kV cable.

[0037] The high-voltage transformer 3 is connected to the low-voltage control cabinet 5 via a second cable. The second cable is a 400V wire. The low-voltage control cabinet 5 can connect to low-voltage equipment, providing operating voltage to these devices. Examples include drilling rigs, cooling fans 6 (exhaust fans), dehumidifiers in the dehumidification and drying device 2, and wireless meter reading devices 10. The low-voltage control cabinet 5 controls the connection and disconnection of the low-voltage 400V line between the high-voltage transformer 3 and the drilling rig. Cable control cabinets 4 and 5 can be selected based on requirements; existing equipment can be used.

[0038] The energy safety isolation device includes a contact switch, a buzzer, and an alarm light. The contact switch is mounted on the protective housing, corresponding to the door. The contact switch can be a contact relay, model SPH103, with an operating voltage of 3-26V, an operating frequency of 15kHz, an open collector (OC) output voltage, an output current of 20mA, a maximum operating point (Max) of 150GS, a minimum release point (Min) of 10GS, a hysteresis window (Typ) of 10GS, and a service life greater than 10 million cycles. The buzzer model is YD-B2207, which can operate normally in environments ranging from -20°C to 60°C, and has an overall dimension of 22mm. The buzzer is 7mm thick, with a sound pressure level ≥85dB. The alarm light 7 is model WAEMIN, and it is a 16mm red indicator light. Both the buzzer and the alarm light 7 are located on the top of the protective housing 9.

[0039] When someone opens the casing door 8, the contact switch trips, triggering a circuit breaker signal. Upon receiving this signal, the cable control cabinet 4 disconnects from the high-voltage transformer 3, thus de-energizing the high-voltage transformer 3 and the drilling rig. The buzzer sounds an alarm, and the alarm light 7 flashes. The energy safety isolation device has an independent first built-in power supply, which is connected to the buzzer and alarm light 7 via a contact switch. It can operate even during a power outage. Power to the high-voltage transformer 3 and the drilling rig can only be restored when the casing door 8 is closed, at which point the buzzer and alarm light 7 cease their alarm indication.

[0040] Furthermore, this invention can also be equipped with a positioning device that can monitor the equipment's GPS location information, facilitating equipment scheduling and management. This invention can also be equipped with a real-time monitoring device. The display screen of the real-time monitoring device is located outside the protective housing 9 and is connected to various sensors inside the system. It displays equipment parameters such as internal temperature, humidity, operating voltage, and equipment GPS location information, allowing personnel to monitor the equipment's operating status without opening the housing door 8. Figure 6 As shown. It should be noted that all the devices in this application can be existing ones.

[0041] A further improvement of this utility model is that the protective shell 9 is made of high-quality steel, possessing excellent dustproof and waterproof performance, ensuring stable operation of the equipment in various harsh environments. A grounding device and a lightning rod 11 are installed on the exterior of the protective shell 9, such as... Figure 1 , Figure 2 , Figure 4 As shown, the grounding device ensures the safe operation of the high-voltage substation system and directs the additional induced current to the ground, while the lightning rod 11 ensures the safety of equipment power supply in rainy weather.

[0042] The system of this utility model is also equipped with a wireless meter reading device 10. The wireless meter reading device 10 transmits the information of the equipment through the sensor to the remote monitoring center. It has a built-in smart meter, model DTZ71-0.5S, current specification is 1.5(6)A, voltage specification is 3×220 / 380V, 3×57.7 / 100V, and wiring method is three-phase four-wire system. It can monitor the voltage and current of each phase in real time, and can measure active power, reactive power, time-of-use tariff, and store electricity consumption data for nearly 13 months. It has the function of recording events such as opening cover, loss of voltage, loss of current, and phase failure. The communication interface is 2-channel RS485 interface and far-infrared communication interface. The communication protocol is DL / T645-2007 communication protocol. The length × width × thickness of the product is 290mm × 170mm × 85mm. It records the energy consumption of the equipment during the production process, realizes remote management of the equipment, and reduces the equipment management cost. The wireless meter reading device 10 also has a built-in backup power supply. In the event of an unexpected power outage, it can still save the recorded data locally and upload the data before the power outage to the monitoring center when the power is restored.

[0043] This utility model's real-time monitoring device for high-voltage substation systems can remotely monitor the equipment's operating status, promptly identify and resolve potential problems, thereby further reducing maintenance costs. Simultaneously, the energy safety isolation device provides operators with an extra layer of safety, ensuring the smooth operation of the entire ore mining process.

[0044] This portable high-voltage transformer system features convenient mobility and reliable safety. It is suitable for temporary power supply and emergency repairs in open-pit mines, enabling rapid response to power demands and improving power supply efficiency. The portable high-voltage transformer system includes a traction device, allowing for rapid equipment movement using an auxiliary vehicle. A built-in temperature monitoring system monitors equipment temperature in real time and automatically adjusts the cooling fan exhaust to ensure stable operation. A high-efficiency drying device effectively removes moisture from the equipment, ensuring the dryness of electrical components and extending equipment lifespan. The external protective casing has reliable grounding protection, effectively preventing electrical safety accidents such as leakage and short circuits. An energy safety isolation device activates a buzzer and warning light when the casing door is opened, causing a momentary power outage; power is restored only when the casing door is closed. GPS positioning technology allows for real-time tracking of the high-voltage transformer system's location, facilitating equipment scheduling and management. A wireless meter reading device uploads meter readings, equipment location, temperature, and other information to a remote control system in real time, allowing managers to monitor equipment status at any time.

[0045] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A mobile high-voltage substation system for open-pit mining drilling rigs, characterized in that, Includes a traction device; the traction device is equipped with a dehumidification and drying device, a high-voltage transformer, a cable control cabinet, a low-voltage control cabinet, and an energy safety isolation device; The cable control cabinet is connected to the high-voltage transformer via a first cable; the high-voltage transformer is connected to the low-voltage control cabinet via a second cable; the dehumidification and drying device is connected to the low-voltage control cabinet. The traction device is equipped with a protective housing, and the dehumidification and drying device, high-voltage transformer, cable control cabinet and low-voltage control cabinet are all located inside the protective housing; The protective housing is provided with an openable and closable door; one end of the door is hinged to the protective housing; the energy safety isolation device includes a first built-in power supply, an alarm light, and a contact switch; the alarm light is located on the top of the protective housing; the contact switch is located on the protective housing, corresponding to the door; the alarm light is connected to the contact switch. The first built-in power supply is connected to the alarm light via a contact switch.

2. The mobile high-voltage substation system for open-pit mining drilling rigs according to claim 1, characterized in that, A cooling fan is installed on the protective housing, and the cooling fan is connected to the low-voltage control cabinet.

3. The mobile high-voltage substation system for open-pit mining drilling rigs according to claim 1, characterized in that, A lightning rod and a wireless meter reading device are installed on the top of the protective casing.

4. The mobile high-voltage substation system for open-pit mining drilling rigs according to claim 1, characterized in that, The shell door is provided with several heat dissipation slots.

5. The mobile high-voltage substation system for open-pit mining drilling rigs according to claim 1, characterized in that, The energy safety isolation device also includes a buzzer, which is connected to a contact switch.

6. The mobile high-voltage substation system for open-pit mining drilling rigs according to claim 1, characterized in that, The protective enclosure is equipped with an isolation plate, the high-voltage transformer is located on one side of the isolation plate, and the cable control cabinet is located on the other side of the isolation plate.

7. The mobile high-voltage substation system for open-pit mining drilling rigs according to claim 6, characterized in that, Two dehumidification and drying devices are provided, one located on one side of the isolation plate and the other on the other side of the isolation plate.

8. The mobile high-voltage substation system for open-pit mining drilling rigs according to claim 6, characterized in that, The traction device includes a frame and a traction head. The traction head is located on one side of the frame, the protective shell is located on the frame, and the bottom of the frame is equipped with wheels.

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