Compact and efficient mining long-distance power supply comprehensive treatment device
By designing a compact and efficient mining comprehensive management device for long-distance power supply, the problems of low voltage and poor heat dissipation effect during long-distance power supply are solved, and voltage stability and equipment heat dissipation efficiency are improved. At the same time, the equipment compactness and maintenance convenience are improved, and maintenance costs and safety risks are reduced.
Patent Information
- Application Number
- CN202510003608.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-02
- Publication Date
- 2025-03-25
AI Technical Summary
During long-distance power supply, the equipment starts to generate a huge impact current, resulting in a voltage drop in the power supply cable, low power supply voltage, and poor heat dissipation effect of existing equipment, resulting in an increase in resistance, affecting the normal start of the equipment. At the same time, existing equipment is inconvenient to maintain, high cost and high safety risks.
Design a compact and efficient long-distance power supply comprehensive management device for mining, including explosion-proof chamber, movement mechanism and cooling mechanism. The movement mechanism stabilizes the input voltage through water-cooled plates and capacitors, and the cooling mechanism cools through radiators and centrifugal fans. It integrates the rectification module, inverter module and power module, and integrates the design to improve compactness and voltage regulation capabilities.
Through the design of the cooling mechanism, the cable voltage drop problem is alleviated, the voltage stability is ensured, the heat dissipation efficiency of the equipment is improved, and the problem that the equipment cannot start due to low voltage is avoided. At the same time, the integrated design of the movement mechanism improves the compactness and maintenance convenience of the equipment, reducing maintenance costs and safety risks.
Smart Images
Figure CN119695675A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of power supply, and in particular to a compact and efficient long-distance power supply comprehensive management device for mines. Background Art
[0002] The power supply distance between the relevant equipment of the coal mining face in the coal mine and the supporting power supply is generally between 1000-3000m. The large equipment required for work includes coal mining machines, tunneling machines, scraper conveyors, crushers and other loads; However, when power is supplied over long distances, a huge impact current is generated when the equipment is started directly. The cable voltage drop caused by the reactive and active currents on the power supply cable causes the power supply voltage on the load side of the end of the power supply cable to be low. Secondly, in existing equipment, airflow is used to cool the transformer coil, but a special air duct needs to be set up, and the entire coil is isolated by insulating strips between layers. The gap is small and the heat reduction effect is poor, resulting in an increase in resistance caused by poor heat dissipation of the coil, causing a voltage drop, which in turn causes the motor to fail to start normally.
[0003] In addition, in existing equipment, in order to meet the power demand of various equipment and stabilize the output voltage and current, rectifier modules, inverter modules, capacitors and power modules are usually used in combination. However, some equipment will place these modules in a flameproof switch cabinet, which will cause inconvenience in maintenance and additional costs. If the module is set in the outer container of the equipment, it will take up additional space and may cause difficulties in the overall layout of the equipment. If it is set inside, it will be relatively troublesome to maintain, repair or replace the module.
[0004] Furthermore, in order to solve the voltage reduction problem, the power supply will be increased to offset the disadvantage of voltage difference caused by long cables. However, large-scale power supply equipment is expensive and high voltage has high insulation requirements for equipment and lines, and is difficult to maintain, which increases safety risks. Summary of the invention
[0005] In view of the deficiencies of the prior art, the present invention provides a compact and efficient comprehensive management device for long-distance power supply for mining.
[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a compact and efficient long-distance power supply comprehensive management device for mining, comprising an explosion-proof cavity, a movement mechanism and a cooling mechanism, the explosion-proof cavity is fixedly connected with a plurality of hanging ears, an isolation sealing plate is fixedly connected with the middle of the explosion-proof cavity, the explosion-proof cavity is divided into a front chamber and a rear chamber by the isolation sealing plate, the movement mechanism is arranged in the front chamber, the cooling mechanism is arranged in the rear chamber, and an isolation conversion transformer is arranged inside the rear chamber; The movement mechanism includes a water-cooling plate and a capacitor. The water-cooling plate is rotatably connected to the explosion-proof cavity. A water channel is arranged inside the water-cooling plate. A fixed welding bracket is fixedly connected to the water-cooling plate. A fixed beam is fixedly connected to the side end of the fixed welding bracket. The capacitor is fixed on the water-cooling plate through the fixed welding bracket and the fixed beam. The movement mechanism is used to stabilize the input voltage, filter out harmonic interference, and improve the energy conversion efficiency; The cooling mechanism includes a radiator. The radiator is arranged in the rear chamber. A centrifugal fan is arranged at the side end of the radiator. An explosion-proof adapter plate is connected to the outside of the explosion-proof cavity. The cooling mechanism is used to isolate and cool the conversion transformer.
[0007] Preferably, an inlet and an outlet are arranged on the outside of the water-cooling plate. A rectification module is fixedly connected to the water-cooling plate. A rectification laminated busbar is assembled and connected to the rectification module.
[0008] Preferably, the movement mechanism further includes an inverter module. The inverter module is connected to the water-cooling plate. An inverter laminated busbar is assembled on the inverter module. An isolation plate is arranged between the inverter laminated busbar and the water-cooling plate.
[0009] Preferably, the movement mechanism further includes a power supply module. The power supply module is fixedly connected to the water-cooling plate.
[0010] Preferably, the fixed welding bracket is in a "C" shape, and three connecting blocks are fixedly connected to the fixed welding bracket.
[0011] Preferably, the cooling mechanism includes a fixing plate. The fixing plate is arranged in the rear chamber. An explosion-proof connecting plate is fixedly connected to the side end of the explosion-proof cavity.
[0012] Preferably, a second air duct partition and a first air duct partition are fixedly connected to the lower side of the fixing plate. A transformer coil is arranged in the middle of the second air duct partition and the first air duct partition. The bottom ends of the second air duct partition and the first air duct partition are fixedly connected inside the explosion-proof cavity.
[0013] Preferably, the second air duct partition is fixedly connected to the side end of the fixing plate. The transformer coil is internally layered, and the layers are isolated by insulating strips. Moreover, the transformer coil is hermetically connected to the second air duct partition to form an air duct.
[0014] Preferably, the cooling mechanism is arranged at the side end of the front chamber. Beneficial effects
[0015] 1. This compact and efficient long-distance power supply comprehensive management device for mines, the cold air flow passes through the layers of the transformer coil isolated by insulating strips, and cooperates with the air duct formed by the sealed connection between the transformer coil and the second air duct partition to cool the transformer coil. When the transformer coil is cooled, the output voltage of the isolation conversion transformer is more stable. Transmission through a long cable can reduce the problem of cable voltage drop, and the air duct can ensure that there is enough air volume inside the coil to pass through the coil to cool it, with high heat dissipation efficiency, and no separate air duct needs to be installed, and the overall installation is convenient.
[0016] 2. This compact and efficient long-distance power supply comprehensive management device for mining has the movement mechanism designed on the water-cooled plate and is set on the front side of the equipment, which is convenient for maintenance and production of the movement mechanism, and also convenient for installation of the explosion-proof cavity, thereby improving production efficiency.
[0017] 3. This compact and efficient long-distance power supply comprehensive management device for mines is designed with rectifier modules, inverter modules, capacitors and power modules centrally designed on the water-cooled plate. The movement mechanism is integrated to improve the compactness of the whole equipment, improve the voltage regulation ability of the system, facilitate the adjustment of the output voltage amplitude, compensate for the voltage fluctuation and voltage drop caused by the long cable, and ensure a stable voltage supply at the load end.
[0018] 4. This compact and efficient long-distance power supply comprehensive management device for mines detects the difference between the input voltage of the load equipment and the expected voltage through the inverter module in the movement mechanism and generates a compensation signal, and transmits the signal to the isolation conversion transformer. By adjusting the isolation conversion transformer, the voltage input to the load is compensated so that the voltage can meet the normal use of the equipment underground, thereby avoiding the voltage drop that causes the equipment to be unusable, resulting in limited mining progress and further affecting production efficiency. The stable voltage can ensure that the equipment underground operates in the best state, reduce the electrical and mechanical losses of the equipment, and extend the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a side view of the overall structure of the present invention; Figure 2 This is a side view of the movement door panel of the present invention when it is opened; Figure 3 This is a layout diagram of the equipment cavity of the present invention; Figure 4 It is a side view of the movement mechanism of the present invention; Figure 5 It is a side view of the power module of the present invention; Figure 6 This is a structural diagram of a fixed welding bracket of the present invention; Figure 7 This is a diagram of the outer side of the water cooling plate of the present invention; Figure 8 This is a front view of the installation of the radiator of the present invention; Fig. 9 This is a structural diagram of the explosion-proof adapter plate of the present invention; Fig.10 This is the structural diagram of the air outlet side of the isolation conversion transformer and the air duct integrated with the present invention Fig.11 This is a structural diagram of the air inlet side of the isolation conversion transformer and the air duct integrated in the cooling mechanism of the present invention; Fig.12 This is a cold air circulation diagram of the cooling mechanism in the cooling mechanism of the present invention.
[0020] In the figure: 1. Explosion-proof chamber; 2. Mounting ears; 3. Front chamber; 4. Rear chamber; Movement mechanism: 51, water cooling plate; 52, water inlet; 53, water outlet; 54, fixed welding bracket; 55, rectifier module; 56, rectifier stacked busbar; 57, inverter module; 58, inverter stacked busbar; 59, isolation plate; 591, fixed beam; 592, capacitor; 593, power module; Cooling mechanism: 61. fixing plate; 62. transformer coil; 63. first air duct partition; 64. second air duct partition; 65. radiator; 66. centrifugal fan; 67. explosion-proof adapter plate; 68. explosion-proof connecting plate. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0022] Embodiment 1: See also Figure 1 -12, a compact and efficient long-distance power supply comprehensive management device for mining includes an explosion-proof cavity 1, a movement mechanism and a cooling mechanism, a plurality of hanging ears 2 are fixedly connected to the explosion-proof cavity 1, an isolation sealing plate is fixedly connected to the middle of the explosion-proof cavity 1, and the explosion-proof cavity 1 is divided into a front chamber 3 and a rear chamber 4 by the isolation sealing plate, the movement mechanism is arranged in the front chamber 3, the cooling mechanism is arranged in the rear chamber 4, and an isolation conversion transformer is arranged inside the rear chamber 4; The movement mechanism includes a water-cooling plate 51 and a capacitor 592. The water-cooling plate 51 is rotatably connected to the explosion-proof cavity 1. A water channel is arranged inside the water-cooling plate 51. A fixed welding bracket 54 is fixedly connected to the water-cooling plate 51. A fixed beam 591 is fixedly connected to the side end of the fixed welding bracket 54. The capacitor 592 is fixed to the water-cooling plate 51 through the fixed welding bracket 54 and the fixed beam 591. The movement mechanism is used to stabilize the input voltage, filter out harmonic interference, and improve energy conversion efficiency. The cooling mechanism includes a radiator 65 which is arranged in the rear chamber 4. A centrifugal fan 66 is arranged at the side end of the radiator 65. An explosion-proof adapter plate 67 is connected to the outside of the explosion-proof cavity 1. The cooling mechanism is used for isolating and cooling the conversion transformer.
[0023] An inlet 52 and an outlet 53 are arranged on the outside of the water-cooled plate 51. A rectification module 55 is fixedly connected to the water-cooled plate 51, and a rectification laminated busbar 56 is assembled and connected to the rectification module 55.
[0024] The core mechanism further includes an inverter module 57 which is connected to the water-cooled plate 51. An inverter laminated busbar 58 is assembled on the inverter module 57, and an isolation plate 59 is arranged between the inverter laminated busbar 58 and the water-cooled plate 51.
[0025] The core mechanism further includes a power supply module 593 which is fixedly connected to the water-cooled plate 51.
[0026] The fixed welding bracket 54 is in a "C" shape, and three connecting blocks are fixedly connected to the fixed welding bracket 54.
[0027] During operation: To solve the voltage drop phenomenon of underground equipment, a core mechanism and a conversion transformer are arranged between the mobile isolation conversion transformer and the load equipment to adjust the voltage, ensuring stable long-distance power supply for the load equipment underground in the mine.
[0028] When the inverter module 57 in the core mechanism detects that the voltage of the input load equipment is lower than the set value: The difference between the input voltage of the load equipment detected by the inverter module 57 in the core mechanism and the expected voltage is detected to generate a compensation signal, and the signal is transmitted to the isolation conversion transformer. The turns ratio of the isolation conversion transformer is adjusted to compensate the voltage input to the load, so that the voltage meets the normal use of underground equipment, thus avoiding the equipment being unable to be used due to voltage drop, resulting in limited mining progress and further affecting production efficiency. Stable voltage can ensure that underground equipment operates in the best state, reduce the electrical and mechanical losses of the equipment, and extend the service life of the equipment.
[0029] The rectification module 55, the inverter module 57, the capacitor 592, the power supply module 593 and the isolation conversion transformer are respectively arranged in the front chamber 3 and the rear chamber 4 of the explosion-proof cavity 1, and the overall mechanism is arranged between the mobile isolation conversion transformer and the load equipment, avoiding increasing the front-stage power supply, and thus avoiding the problems of high cost and large safety risks of large power supply equipment.
[0030] Compared with the existing method of increasing the voltage of the power supply at the head end to compensate for the loss on the line, there is no need to increase the total installed capacity of the front-stage power supply, and the insulation withstand voltage level of the cables and equipment will not be increased. Compared with the existing method of moving the mobile transformer forward to reduce the voltage drop on the cable, it will not increase the workload of coal mining and tunneling operations, will not reduce work efficiency, and will not increase the cost of coal mining and tunneling operations. Cold water is input through the water inlet 52 , and then cooperates with the water cooling plate 51 to cool the rectifier module 55 , the inverter module 57 , the capacitor 592 and the power module 593 . After heat transfer, the cold water is heated and output from the water outlet 53 .
[0031] The movement mechanism is designed on the water-cooled plate 51 and arranged on the front side of the equipment, which is convenient for maintenance and production of the movement mechanism and also convenient for installation of the explosion-proof cavity 1, thereby improving production efficiency.
[0032] By centrally designing the rectifier module 55, the inverter module 57, the capacitor 592 and the power module 593 on the water-cooled plate 51, the movement mechanism is integrated, the compactness of the whole equipment is improved, the voltage regulation capability of the system is improved, the amplitude and frequency of the output voltage are adjusted, the voltage fluctuation and voltage drop caused by the excessively long cable are compensated, and a stable voltage supply is ensured at the load end.
[0033] Embodiment 2: See also Figure 1 -12, the cooling mechanism includes a fixed plate 61, which is arranged in the rear chamber 4, and an explosion-proof connecting plate 68 is fixedly connected to the side end of the explosion-proof cavity 1.
[0034] The second air duct partition plate 64 and the first air duct partition plate 63 are fixedly connected to the lower side of the fixed plate 61, and a transformer coil 62 is arranged in the middle of the second air duct partition plate 64 and the first air duct partition plate 63. The bottom ends of the second air duct partition plate 64 and the first air duct partition plate 63 are fixedly connected in the explosion-proof cavity 1.
[0035] The second air duct partition plate 64 is fixedly connected to the side end of the fixed plate 61, the transformer coil 62 is layered inside, and the layers are isolated by insulating strips, and the transformer coil 62 is sealed and connected to the second air duct partition plate 64 to form an air duct.
[0036] The cooling mechanism is arranged at the side end of the front chamber 3 .
[0037] Working principle: Start the centrifugal fan 66 and use the centrifugal fan 66 to generate airflow. The hot airflow passes through the explosion-proof adapter plate 67 for heat exchange. The hot airflow turns cold. The cold airflow passes through the air duct isolated by the insulating strips between the layers to exchange heat and cool the transformer coil 62. When the transformer coil 62 is cooled, the output voltage of the isolation transformer is more stable, which can alleviate the problem of voltage drop caused by the excessively long cable to a certain extent.
[0038] Since the transformer coil 62 is sealed near the fan end, cold air enters from the end of the transformer coil 62 near the fan 66, and the cold air flows through the entire transformer coil 62. The inside of the transformer coil 62 is layered, and insulating strips are set between the layers to isolate each other, thereby forming an air duct, ensuring that sufficient air volume passes through the inside of the transformer coil 62 for heat exchange, with high heat dissipation efficiency, no need to install a separate air duct, and the overall structure is simple to install.
[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A compact and efficient long-distance power supply comprehensive management device for mines, characterized in that: It includes an explosion-proof cavity (1), a movement mechanism, and a cooling mechanism. A number of hanging ears (2) are fixedly connected to the explosion-proof cavity (1). An isolation sealing plate is fixedly connected to the middle part inside the explosion-proof cavity (1). The explosion-proof cavity (1) is divided into a front chamber (3) and a rear chamber (4) by the isolation sealing plate. The movement mechanism is arranged in the front chamber (3), and the cooling mechanism is arranged in the rear chamber (4). An isolation transformer is arranged inside the rear chamber (4). The movement mechanism includes a water-cooling plate (51) and a capacitor (592). The water-cooling plate (51) is rotatably connected to the explosion-proof cavity (1). A water channel is arranged inside the water-cooling plate (51). A fixed welding bracket (54) is fixedly connected to the water-cooling plate (51). A fixed beam (591) is fixedly connected to the side end of the fixed welding bracket (54). The capacitor (592) is fixed on the water-cooling plate (51) through the fixed welding bracket (54) and the fixed beam (591). The cooling mechanism includes a radiator (65). The radiator (65) is arranged in the rear chamber (4). A centrifugal fan (66) is arranged at the side end of the radiator (65). An explosion-proof adapter plate (67) is connected to the outside of the explosion-proof cavity (1).
2. A compact and efficient long-distance power supply comprehensive management device for mines according to claim 1, characterized in that: An inlet (52) and an outlet (53) are arranged on the outside of the water-cooling plate (51). A rectification module (55) is fixedly connected to the water-cooling plate (51). A rectification laminated busbar (56) is assembled and connected to the rectification module (55).
3. A compact and efficient long-distance power supply comprehensive management device for mines according to claim 2, characterized in that: The movement mechanism further includes an inverter module (57). The inverter module (57) is connected to the water-cooling plate (51). An inverter laminated busbar (58) is assembled on the inverter module (57). An isolation plate (59) is arranged between the inverter laminated busbar (58) and the water-cooling plate (51).
4. A compact and efficient long-distance power supply comprehensive management device for mines according to claim 3, characterized in that: The movement mechanism further includes a power supply module (593). The power supply module (593) is fixedly connected to the water-cooling plate (51).
5. A compact and efficient long-distance power supply comprehensive management device for mines according to claim 4, characterized in that: The fixed welding bracket (54) is in a "C" shape, and three connecting blocks are fixedly connected to the fixed welding bracket (54).
6. A compact and efficient long-distance power supply comprehensive management device for mines according to claim 1, characterized in that: The cooling mechanism includes a fixing plate (61). The fixing plate (61) is arranged in the rear chamber (4). An explosion-proof connecting plate (68) is fixedly connected to the side end of the explosion-proof cavity (1).
7. A compact and efficient long-distance power supply comprehensive management device for mines according to claim 6, characterized in that: A second air duct partition plate (64) and a first air duct partition plate (63) are fixedly connected to the lower side of the fixing plate (61). A transformer coil (62) is arranged in the middle of the second air duct partition plate (64) and the first air duct partition plate (63). The bottom ends of the second air duct partition plate (64) and the first air duct partition plate (63) are fixedly connected inside the explosion-proof cavity (1).
8. A compact and efficient long-distance power supply comprehensive management device for mines according to claim 7, characterized in that: The second air duct partition plate (64) is fixedly connected to the side end of the fixing plate (61). The inside of the transformer coil (62) is stratified, and the layers are isolated by insulating strips. Moreover, the transformer coil (62) is hermetically connected to the second air duct partition plate (64) to form an air duct.
9. A compact and efficient long-distance power supply comprehensive management device for mines according to claim 1, characterized in that: The cooling mechanism is arranged at the side end of the front chamber (3).