Three-phase ventilator for mining electric locomotive
By using AC motor drive and inverter power supply systems in mining locomotive ventilators, combined with temperature sensors and heat dissipation systems, the problems of high noise and many faults of DC motors are solved, and a stable operation and comfortable environment with low noise and low failure rate are achieved.
Patent Information
- Application Number
- CN202422937958.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Mining locomotive ventilators are generally driven by DC2000V DC motors, resulting in high noise, many faults, low reliability, short life, large maintenance workload, and spark hazards.
A three-phase fan driven by an AC motor is used to monitor the temperature and adjust the fan speed through the main motor temperature sensor. Combined with an inverter power supply and a cooling system, it reduces noise, extends equipment life, and reduces faults and maintenance needs.
It achieves stable operation with low noise and low failure rate, extends equipment life, reduces maintenance costs, and ensures a comfortable temperature environment in the car.
Smart Images
Figure CN223279102U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mine locomotive ventilators, in particular to a three-phase ventilator for a mine electric locomotive. Background Art
[0002] When mining locomotives are in use, it is often necessary to cool the head of the locomotive to ensure that the locomotive motor can operate stably and be used. However, the ventilators of mining locomotives are generally driven by DC2000V DC motors. DC motors are expensive and have complex structures. In particular, the sliding contact between the brushes and the commutator causes mechanical wear and sparks, which makes the DC motors prone to failures, low reliability, short life, and heavy maintenance. On-site drivers report that the noise is very loud and unbearable, and the sparks generated by the sliding contact between the brushes and the commutator are also a major fire hazard. Utility Model Content
[0003] The purpose of the utility model is to provide a three-phase ventilator for mining electric locomotives to solve the problems in the above background technology that DC motors have high noise, many faults and high maintenance workload.
[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a three-phase ventilator for a mining electric locomotive, comprising a locomotive head, a first volute fan fixedly installed inside the mechanical room of the locomotive head, a second volute fan fixedly installed inside the locomotive head, two mounting brackets fixedly installed inside the locomotive head, and the outer surfaces of the mounting brackets are respectively connected to the first volute fan and the second volute fan, the air outlets of the first volute fan and the second volute fan face the electric locomotive motor in the locomotive head, and a conversion and fixing mechanism is provided between the mounting bracket, the first volute fan and the second volute fan, and the first volute fan and the second volute fan can operate stably by rotating the fixing mechanism.
[0005] Preferably, the conversion and fixing mechanism includes: a first AC motor, the first AC motor is fixedly mounted on the outer surface of the mounting frame, and a second AC motor is fixedly mounted on the outer surface of another mounting frame, and the output end of the second AC motor is connected to the second volute fan, the output end of the first AC motor is connected to the first volute fan, a first three-phase inverter power supply is provided inside the vehicle head, and plug connectors are provided on both sides of the first three-phase inverter power supply, and the plug connectors are respectively connected to the first volute fan and the second volute fan, a main motor temperature sensor is fixedly mounted inside the vehicle head, and the main motor temperature sensor is attached to the outer surface of the tram motor.
[0006] By adopting the above technical solution, the first AC motor and the second AC motor can be controlled to operate at the same time through the connection between the plug connector and the first three-phase inverter power supply, so that the first volute fan and the second volute fan can rotate to draw external cold air into the interior of the vehicle head, and the temperature of the tram motor can be detected by the main motor temperature sensor, and the rotation speed of the first volute fan and the second volute fan can be adjusted to cool the tram motor so that the vehicle head can run stably. In addition, through the first three-phase inverter power supply, the first AC motor and the second AC motor, faults can be reduced, the service life can be extended, and there is no noise in operation, which reduces the workload of maintenance.
[0007] Preferably, an intermediate fixing bracket is fixedly mounted on the outer surface of the mounting frame, the first AC motor and the second AC motor are respectively located inside the intermediate fixing bracket, and a first three-phase inverter power supply is fixedly mounted on the outer surface of the intermediate fixing bracket on one side.
[0008] By adopting the above technical solution, the first AC motor and the second AC motor can be protected by the intermediate fixing bracket, and the height of the intermediate fixing bracket can be flexibly adjusted according to the space in the vehicle, which facilitates the installation and adjustment of the first three-phase inverter power supply and the second three-phase inverter power supply.
[0009] Preferably, the outer surface of the first three inverter power supplies is provided with a heat conduction and heat dissipation mechanism, through which the first three inverter power supplies can maintain a stable temperature during operation, thereby ensuring the stable operation of the first three inverter power supplies.
[0010] By adopting the above technical solution, the first and third inverter power supplies can be cooled so that they can maintain stable operation at a suitable temperature, reducing damage to the first and third inverter power supplies or voltage instability caused by unstable temperature.
[0011] Preferably, the heat-conducting and heat-dissipating mechanism includes: heat-dissipating fins, which are fixedly mounted on the outer surface of the first three-phase inverter power supply, the middle outer surface of the heat-dissipating fins is provided with a block-shaped protrusion, and a heat-dissipating fan is fixedly mounted on the outer surface of the heat-dissipating fins, and the outer surface of the heat-dissipating fan is in contact with the block-shaped protrusion of the heat-dissipating fins.
[0012] By adopting the above technical solution, the cooling fan and the cooling fins can be separated by the block-shaped protrusions on the outer surface of the cooling fins, so that the external wind can be drawn in and blown between the cooling fins, allowing the wind to move along the grooves of the cooling fins to take away the temperature.
[0013] Preferably, one end of the locomotive is connected to a plurality of carriages, and the carriage at the rear end is connected to a guard car. A protective linking mechanism is provided between the guard car and the locomotive. The protective linking mechanism enables the electric energy in the locomotive to be connected to the guard car, so that temperature control equipment can be installed conveniently, so that a comfortable temperature can be maintained in the guard car.
[0014] By adopting the above technical solution, electricity can be led from the front of the car to the guard car, so that temperature control equipment can be installed inside the guard car to maintain a comfortable temperature inside the guard car and reduce the discomfort of the people in the guard car.
[0015] Preferably, the protective link mechanism includes: a steel pipe, which is respectively fixed on the outer surface of the carriage and the guard car, with cables passing through the interior of the steel pipe, and connecting metal hose plugs are fixedly installed at both ends of the steel pipe, and the connecting metal hose plugs are connected to each other.
[0016] By adopting the above technical solution, the cables passing through the carriages can be protected by steel pipes, and by connecting metal hose plugs, the guard car and the carriages can be connected to each other and easily disconnected.
[0017] Compared with the prior art, the beneficial effects of the present invention are: the three-phase ventilator:
[0018] 1. When the locomotive is in operation, the main motor temperature sensor monitors the temperature of the locomotive motor and transmits the data to the first and third inverter power supplies, allowing the first and third inverter power supplies to adjust the speeds of the first and second AC motors according to the temperature of the locomotive motor, so that the first and second volute fans can rotate accordingly to cool the locomotive motor. The characteristics of the first and third inverter power supplies, the first and second AC motors can reduce failures, extend service life, and extend maintenance intervals. In addition, the system is quiet and spark-free during use, ensuring stable and comfortable operation, and low maintenance costs.
[0019] 2. In order to ensure the stable operation of the first and third inverters during use, the cooling fan will run to draw air away and blow it to the cooling fins. The cooling fins will absorb the temperature generated by the operation of the first and third inverters, expand the heat dissipation area through the cooling fins, and accelerate the removal of the temperature of the first and third inverters with the help of the cooling fan, so that the first and third inverters can maintain stable operation at a suitable temperature, thereby improving the stability of the first and third inverters in transmitting and converting electricity.
[0020] 3. The steel pipe can be used to protect the cables passing between the locomotive, guard car and carriages to reduce the chance of cable damage. The setting of the connecting metal hose plug can provide a soft connection between the guard car and the carriage, so that the cables will not be affected when the locomotive, guard car and carriage are displaced and bumped, allowing the locomotive, guard car and carriages to be flexibly connected and separated, making it convenient to reduce or add carriages. The guard car can still be powered on, so that the power of the locomotive can be transmitted to the guard car, so that the guard car can be equipped with a temperature control device and powered on to ensure a comfortable temperature in the guard car, so that the personnel in the guard car will not feel uncomfortable when working and watching the train. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the mounting frame and the intermediate fixing bracket of the utility model;
[0022] Figure 2 This is a schematic diagram of the cross-sectional three-dimensional structure of the first AC motor and the first volute fan of the present invention;
[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the mounting frame and the first AC motor of the utility model;
[0024] Figure 4 This is a schematic diagram of the exploded three-dimensional structure of the mounting bracket and the main motor temperature sensor of the utility model;
[0025] Figure 5 This is a schematic diagram of the exploded three-dimensional structure of the heat dissipation fins and heat dissipation fan of the utility model;
[0026] Figure 6 This is a schematic diagram of the front view structure of the guard car and carriage of the present invention.
[0027] In the figure: 1. Car front; 2. Mounting frame; 3. Intermediate fixing bracket; 4. First and third inverter power supplies; 5. Heat dissipation fins; 6. Cooling fan; 7. Second and third inverter power supplies; 8. Plug connector; 9. First AC motor; 10. First volute fan; 11. Second AC motor; 12. Second volute fan; 13. Main motor temperature sensor; 14. Guard car; 15. Carriage; 16. Steel pipe; 17. Connecting plug for metal hose. DETAILED DESCRIPTION
[0028] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.
[0029] See also Figure 1-6The utility model provides a technical solution: a three-phase ventilator, including a locomotive 1, a first volute fan 10 is fixedly installed inside the mechanical room of the locomotive 1, a second volute fan 12 is fixedly installed inside the locomotive 1, two mounting brackets 2 are fixedly installed inside the locomotive 1, and the outer surfaces of the mounting brackets 2 are respectively connected to the first volute fan 10 and the second volute fan 12, the air outlets of the first volute fan 10 and the second volute fan 12 face the electric vehicle motor in the locomotive 1, and a conversion and fixing mechanism is provided between the mounting bracket 2, the first volute fan 10 and the second volute fan 12, and the first volute fan 10 and the second volute fan 12 can operate stably by rotating the fixing mechanism.
[0030] The first volute fan 10 and the second volute fan 12 can be assisted in fixing by the mounting bracket 2, so that the first volute fan 10 and the second volute fan 12 can stand stably inside the vehicle head 1, so that the electric vehicle motor inside the vehicle head 1 can be cooled by the air blowing from the first volute fan 10 and the second volute fan 12.
[0031] The conversion and fixing mechanism includes: a first AC motor 9, the first AC motor 9 is fixedly mounted on the outer surface of the mounting frame 2, and a second AC motor 11 is fixedly mounted on the outer surface of another mounting frame 2, and the output end of the second AC motor 11 is connected to the second volute fan 12, the output end of the first AC motor 9 is connected to the first volute fan 10, a first three-phase inverter power supply 4 is provided inside the car head 1, and plug connectors 8 are provided on both sides of the first three-phase inverter power supply 4, and the plug connectors 8 are respectively connected to the first volute fan 10 and the second volute fan 12, a main motor temperature sensor 13 is fixedly mounted inside the car head 1, and the main motor temperature sensor 13 is attached to the outer surface of the tram motor.
[0032] When in use, the main motor temperature sensor 13 will measure the electric vehicle motor in the front of the vehicle 1 and transmit the data to the first three-phase inverter power supply 4. Through the plug connectors 8 set on both sides of the first three-phase inverter power supply 4, the first three-phase inverter power supply 4 can simultaneously control the first AC motor 9 and the second AC motor 11, so that the first volute fan 10 and the second volute fan 12 can adjust the rotation speed according to the temperature of the electric vehicle motor. The first three-phase inverter power supply 4, the first AC motor 9 and the second AC motor 11 can effectively reduce the frequency of maintenance, and can ensure lower noise and lower failure rate, reduce the trouble of failure and maintenance and reduce the cost of use.
[0033] An intermediate fixing bracket 3 is fixedly mounted on the outer surface of the mounting frame 2. The first AC motor 9 and the second AC motor 11 are respectively located inside the intermediate fixing bracket 3. A first three-phase inverter power supply 4 is fixedly mounted on the outer surface of the intermediate fixing bracket 3 on one side.
[0034] The intermediate fixing bracket 3 can enhance the protection of the first AC motor 9 and the second AC motor 11, and the height of the intermediate fixing bracket 3 can be adjusted, so that the height of the first three-phase inverter power supply 4 and the second three-phase inverter power supply 7 can be adjusted and installed conveniently, and can be adjusted according to the space in the vehicle head 1.
[0035] The outer surface of the first three-item inverter power supply 4 is provided with a heat-conducting and heat-dissipating mechanism, through which the first three-item inverter power supply 4 can maintain a stable temperature during operation, thereby ensuring the stable operation of the first three-item inverter power supply 4. The heat-conducting and heat-dissipating mechanism includes: heat dissipating fins 5, which are fixedly installed on the outer surface of the first three-item inverter power supply 4, and the middle outer surface of the heat dissipating fins 5 is provided with a block-shaped protrusion, and a heat dissipating fan 6 is fixedly installed on the outer surface of the heat dissipating fins 5, and the outer surface of the heat dissipating fan 6 is in contact with the block-shaped protrusion of the heat dissipating fins 5.
[0036] When the first and third inverter power supplies 4 are running, the heat dissipation fins 5 will absorb the stability of the first and third inverter power supplies 4 during operation, and expand the heat dissipation area through the heat dissipation fins 5. The block-shaped protrusions on the outer surface of the heat dissipation fins 5 can make the wind drawn in by the heat dissipation fan 6 be able to be discharged along the grooves of the heat dissipation fins 5, taking away the temperature of the first and third inverter power supplies 4, so that the first and third inverter power supplies 4 can operate at a stable temperature, ensuring that the first and third inverter power supplies 4 can stably transmit electrical energy and reduce the chance of high-temperature damage.
[0037] One end of the locomotive 1 is connected to a plurality of carriages 15, and the carriage 15 at the rear end is connected to a guard car 14. A protective linking mechanism is provided between the guard car 14 and the locomotive 1. Through the protective linking mechanism, the electric energy in the locomotive 1 can be connected to the guard car 14 to facilitate the installation of temperature control equipment, so that the guard car 14 can maintain a comfortable temperature. The protective linking mechanism includes: a steel pipe 16, which is respectively fixed on the outer surface of the carriage 15 and the guard car 14. An electric cable is passed through the interior of the steel pipe 16, and connecting metal hose plugs 17 are fixedly installed at both ends of the steel pipe 16, and the connecting metal hose plugs 17 are connected to each other.
[0038] The guard car 14 can clearly check the status of each carriage 15, and the steel pipes 16 set between the locomotive 1, the guard car 14, and the carriages 15 can effectively protect the inserted cables, and can quickly connect the locomotive 1, the guard car 14, and the carriages 15 by connecting the metal hose plug 17, so that the power of the locomotive 1 can be transmitted to the guard car 14, and the interior of the guard car 14 can be equipped with temperature control equipment and powered on to ensure a comfortable temperature in the guard car 14, reducing the discomfort of workers staying in the guard car 14 to check the carriages 15.
[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A three-phase ventilator for a mining electric locomotive, comprising a locomotive head (1), a first volute fan (10) being fixedly installed inside a machine room of the locomotive head (1), a second volute fan (12) being fixedly installed inside the locomotive head (1), two mounting brackets (2) being fixedly installed inside the locomotive head (1), and outer surfaces of the mounting brackets (2) being connected to the first volute fan (10) and the second volute fan (12), respectively, and air outlets of the first volute fan (10) and the second volute fan (12) facing the locomotive motor in the locomotive head (1), characterized in that: A conversion fixing mechanism is provided between the mounting frame (2), the first volute fan (10) and the second volute fan (12); the first volute fan (10) and the second volute fan (12) can be stably operated by rotating the fixing mechanism.
2. A three-phase ventilator for mining electric locomotive according to claim 1, characterized in that: The conversion fixing mechanism comprises: a first AC motor (9), the first AC motor (9) is fixedly mounted on the outer surface of a mounting frame (2), and a second AC motor (11) is fixedly mounted on the outer surface of another mounting frame (2), and the output end of the second AC motor (11) is connected to the second volute fan (12), and the output end of the first AC motor (9) is connected to the first volute fan (10), a first three-phase inverter power supply (4) is provided inside the vehicle head (1), and plug connectors (8) are provided on both sides of the first three-phase inverter power supply (4), and the plug connectors (8) are respectively connected to the first volute fan (10) and the second volute fan (12), a main motor temperature sensor (13) is fixedly mounted inside the vehicle head (1), and the main motor temperature sensor (13) is attached to the outer surface of the tram motor.
3. A three-phase ventilator for mining electric locomotive according to claim 2, characterized in that: An intermediate fixing bracket (3) is fixedly mounted on the outer surface of the mounting frame (2); the first AC motor (9) and the second AC motor (11) are respectively located inside the intermediate fixing bracket (3); and a first three-phase inverter power supply (4) is fixedly mounted on the outer surface of the intermediate fixing bracket (3) on one side.
4. A three-phase ventilator for a mining electric locomotive according to claim 2, characterized in that: The outer surface of the first three-term inverter power supply (4) is provided with a heat conduction and heat dissipation mechanism, and the heat conduction and heat dissipation mechanism enables the first three-term inverter power supply (4) to maintain a stable temperature during operation, thereby ensuring the stable operation of the first three-term inverter power supply (4).
5. A three-phase ventilator for a mining electric locomotive according to claim 4, characterized in that: The heat conduction and heat dissipation mechanism comprises: a heat dissipation fin (5), the heat dissipation fin (5) being fixedly mounted on the outer surface of the first three-phase inverter power supply (4), a block-shaped protrusion being provided on the middle outer surface of the heat dissipation fin (5), and a heat dissipation fan (6) being fixedly mounted on the outer surface of the heat dissipation fin (5), and the outer surface of the heat dissipation fan (6) being in contact with the block-shaped protrusion of the heat dissipation fin (5).
6. The three-phase ventilator for mining electric locomotive according to claim 1, characterized in that: One end of the locomotive (1) is connected to a plurality of carriages (15), and the carriage (15) at the rear end is connected to a guard car (14). A protective link mechanism is provided between the guard car (14) and the locomotive (1). The protective link mechanism allows the electric energy in the locomotive (1) to be connected to the guard car (14), thereby facilitating the installation of temperature control equipment and maintaining a comfortable temperature in the guard car (14).
7. A three-phase ventilator for a mining electric locomotive according to claim 6, characterized in that: The protective link mechanism comprises: a steel pipe (16), wherein the steel pipe (16) is respectively fixed on the outer surface of the carriage (15) and the guard car (14), a cable is passed through the interior of the steel pipe (16), and connecting metal hose plugs (17) are fixedly installed at both ends of the steel pipe (16), and the connecting metal hose plugs (17) are connected to each other.