CN117365885A - Mine hoisting system downward side gravity potential energy recovery system based on linear motor - Google Patents
Mine hoisting system downward side gravity potential energy recovery system based on linear motor Download PDFInfo
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- CN117365885A CN117365885A CN202311407703.1A CN202311407703A CN117365885A CN 117365885 A CN117365885 A CN 117365885A CN 202311407703 A CN202311407703 A CN 202311407703A CN 117365885 A CN117365885 A CN 117365885A
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- linear motor
- lifting
- energy
- roller
- mine
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- 238000005381 potential energy Methods 0.000 title claims abstract description 17
- 238000011084 recovery Methods 0.000 title claims abstract description 16
- 230000005484 gravity Effects 0.000 title claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000004146 energy storage Methods 0.000 claims abstract description 14
- 238000010248 power generation Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000002457 bidirectional effect Effects 0.000 claims description 14
- 230000033001 locomotion Effects 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G3/00—Other motors, e.g. gravity or inertia motors
- F03G3/087—Gravity or weight motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G3/00—Other motors, e.g. gravity or inertia motors
- F03G3/087—Gravity or weight motors
- F03G3/094—Gravity or weight motors specially adapted for potential energy power storage stations; combinations of gravity or weight motors with electric motors or generators
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The invention discloses a mine lifting system lowering side gravity potential energy recovery system based on a linear motor, which comprises a lifting system, a linear motor power generation system, an energy conveying system and a control system, wherein the lifting system is connected with the linear motor power generation system; the lifting system is characterized in that a steel wire rope winds up and winds down on a lifting roller to realize opposite linear motions of two containers in a mine, namely lifting and lowering motions; the linear motor power generation system is characterized in that a vertical linear motor is additionally arranged between a derrick and a container, and the linear motor recovers braking energy of the container in the lowering process; the energy transmission system is used for storing the recovered electric energy into energy storage equipment or transmitting the recovered electric energy to a power grid, namely an off-grid energy transmission mode and a grid-connected energy transmission mode; the control system switches the off/on energy delivery mode according to the operational speed of the vessel. On the premise of not influencing the normal operation of the mine hoisting system, the invention realizes the recovery of the gravitational potential energy of the descending side of the mine hoisting system, reduces the friction loss of a brake in the mine hoisting system and improves the safety of the system.
Description
Technical Field
The invention relates to a gravitational potential energy recovery system, in particular to a mine hoisting system downward side gravitational potential energy recovery system based on a linear motor.
Background
China is the largest energy consumption country in the world, and coal is the main structural feature of energy in China. In coal mining systems, mine lifting systems are throat equipment in the mining industry, burdening important functions of transporting minerals, personnel and equipment. The capacity of the mine container reaches the ton level, if the capacity of a single rope skip is generally 3-16 tons and the capacity of a multi-rope skip is 4-30 tons, the method has important significance for realizing mine energy recovery if the gravitational potential energy of the mine container can be recovered.
In the prior art, a single rope winding type mine hoist energy recovery system (application number: 202310316278.9) is used for mechanically connecting a flywheel energy storage system with a winding drum of a mine hoist system, converting gravitational potential energy or braking energy of a mine container in the falling process into kinetic energy of a flywheel, and assisting in hoisting the mine container by matching with a reversing mechanism. The utility model provides a mine winder lifting machine cage self-generating device (application number: 202122779076.7), through addding gyro wheel cage ear mechanism, the cage drives the friction pulley in order to transmit mechanical energy, and rethread drive mechanism drives the generator and accomplishes the electricity generation work, and this scheme adds the electricity generation system and collects the friction idle work of cage, and the generated energy of electricity generation system is limited.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a mine hoisting system descending side gravitational potential energy recovery system based on a linear motor, which can efficiently recover the gravitational potential energy of the mine hoisting system descending side on the premise of not influencing the normal operation of an in-service mine steel wire rope hoisting system.
In order to achieve the above purpose, the present invention provides the following technical solutions: a mine hoisting system lowering side gravity potential energy recovery system based on a linear motor comprises a hoisting system, a linear motor power generation system, an energy conveying system and a control system; the lifting system comprises a lifting motor, a lifting roller, a friction head sheave, steel wire ropes, a brake, a hydraulic station and two containers, wherein the two containers are respectively arranged in two vertical shafts;
the linear motor power generation system comprises a linear motor primary, a roller cage shoe group, a linear motor secondary and an embedded linear guide rail; the energy conveying system comprises an inverter, a bidirectional converter, energy storage equipment, a transformer and a power grid; the control system mainly comprises a controller, a PLC and a frequency converter;
the two sides of the container are provided with roller cage shoe groups and linear motor primaries, the roller cage shoe groups are longitudinally arranged in the middle of the side of the container, and the linear motor primaries are arranged on two sides of the roller cage shoe groups; the primary of the linear motor is electrically connected with the inverter;
the well wall is provided with a derrick, embedded linear guide rails and secondary linear motor stages are longitudinally arranged on two side surfaces of the derrick, the embedded linear guide rails are arranged in the middle of the derrick, and the secondary linear motor stages are arranged on two sides of the embedded linear guide rails;
the transformer and the power grid are arranged on the ground, the transformer is electrically connected with the power grid, the bidirectional converter is electrically connected with the energy storage equipment, and the inverter is respectively electrically connected with the transformer and the bidirectional converter; the PLC, the inverter and the bidirectional converter are all connected with the controller, the frequency converter and the hydraulic station are all connected with the PLC, and the lifting motor is connected with the frequency converter.
Further, a torque rotating speed sensor is arranged on the output shaft of the lifting motor, and the torque rotating speed sensor is connected with the PLC.
Further, the roller cage shoe group comprises a plurality of roller cage shoes, and the roller cage shoes are longitudinally arranged at intervals.
Further, the positions of the roller shoes correspond to the positions of the embedded linear guide rails, and the roller shoes are connected with the embedded linear guide rails.
Further, a steel wire rope connector is arranged at the top of the container, and the steel wire rope is connected with the top of the container through the steel wire rope connector.
Compared with the prior art, the invention fully utilizes the vacant space between the mine derrick and the container to additionally install the linear motor on the premise of not influencing the normal operation of the in-service mine steel wire rope lifting system, and realizes the decelerating and lowering movement of the container by recovering the braking energy of the lowering side container through the linear motor. Meanwhile, the linear motor can provide electromagnetic braking force, so that friction loss of a brake in the mine hoisting system is reduced, and the safety of the system is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a block diagram of a lift system according to the present invention;
FIG. 3 is a schematic diagram of the primary and roller cage shoe assembly of the linear motor of the present invention;
FIG. 4 is a schematic diagram of a secondary and embedded linear guide structure of the linear motor of the present invention;
FIG. 5 is a schematic diagram of a control system;
in the figure: 1. the power grid, 2, the transformer, 3, the lifting motor, 4, the torque rotation speed sensor, 5, the lifting roller, 6, the brake, 7, the hydraulic station, 8, the wire rope, 9, the friction crown wheel, 10, the wire rope connector, 11, the derrick, 12, the primary linear motor, 13, the container, 14, the secondary linear motor, 15, the energy storage equipment, 16, the well wall, 17, the roller cage shoe group, 18, the embedded linear guide rail, 19, the inverter, 20, the bidirectional converter, 21, the frequency converter, 22, the PLC,23 and the controller.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 and 2, the present invention provides a technical solution: the system comprises a lifting system, a linear motor power generation system, an energy conveying system and a control system; the lifting system is characterized in that the steel wire rope 8 winds on and winds off the lifting roller 5 to realize opposite linear motions of the two containers 13 in the mine, namely lifting and lowering motions; the linear motor power generation system is characterized in that a vertical linear motor is additionally arranged between a derrick 11 and a container 13, and the linear motor recovers braking energy of the container 13 in the lowering process; the energy delivery system is to store the recovered electrical energy to the energy storage device 15 or to the grid 1, i.e. off-grid and grid-connected energy delivery modes; the control system switches the off/on power delivery mode depending on the speed of operation of the vessel 13.
The lifting system comprises a lifting motor 3, a lifting roller 5, a friction crown wheel 9, steel wire ropes 8, a brake 6, a hydraulic station 7 and two containers 13, wherein the two containers 13 are respectively arranged in two vertical shafts, the top of each container 13 is provided with a steel wire rope connector 10, the lifting motor 3 and the lifting roller 5 are arranged on the ground of a wellhead as power sources, an output shaft of the lifting motor 3 is connected with the lifting roller 5, a torque rotation speed sensor 4 is arranged on the output shaft of the lifting motor 3, the two sides of the lifting roller 5 are provided with the brake 6, the brake 6 is connected with the hydraulic station 7, the hydraulic station 7 provides hydraulic pressure for braking of the brake 6, and the two steel wire ropes 8 are wound on and under the lifting roller 5, so that the containers 13 do opposite linear motions in the two vertical shafts at the same time, namely, the containers 13 in one vertical shaft do lifting motion while the containers 13 in the other vertical shaft do descending motion, and further the transportation work of mine equipment, minerals and personnel is completed; the tops of the two shafts are respectively provided with a friction head sheave 9, and the other ends of the two steel wire ropes 8 are respectively connected with the top of the container 13 through the steel wire rope connector 10 after bypassing the friction head sheave 9, so that the steel wire ropes 8 can vertically lift the container 13.
The linear motor power generation system comprises a linear motor primary 12, a roller cage shoe group 17, a linear motor secondary 14 and an embedded linear guide rail 18; the energy delivery system comprises an inverter 19, a bidirectional converter 20, an energy storage device 15, a transformer 2 and a power grid 1; the control system mainly comprises a controller 23, a PLC22 and a frequency converter 21. The linear motor power generation system is used for recovering braking energy of the lifting system lowering side container 13; the energy transmission system is responsible for storing and transmitting the converted electric energy; the control system is used for regulating and controlling the lifting motor 3 and switching off/on energy delivery modes.
As shown in fig. 3, two sides of the container 13 are provided with a roller cage shoe group 17 and a linear motor primary 12, the roller cage shoe group 17 is longitudinally arranged in the middle of the side of the container 13, and the linear motor primary 12 is arranged at two sides of the roller cage shoe group 17; the linear motor primary 12 is electrically connected with the inverter 19; the well wall 16 is provided with a derrick 11, as shown in fig. 4, an embedded linear guide rail 18 and a linear motor secondary 14 are longitudinally arranged on two side surfaces of the derrick 11, the embedded linear guide rail 18 is arranged in the middle of the derrick 11, and the linear motor secondary 14 is arranged on two sides of the embedded linear guide rail 18; the roller cage shoe group 17 comprises a plurality of roller cage shoes, the roller cage shoes are longitudinally arranged at intervals, the positions of the roller cage shoes correspond to the positions of the embedded linear guide rails 18, and the roller cage shoes are connected with the embedded linear guide rails 18.
As shown in fig. 5, the transformer 2 and the power grid 1 are arranged on the ground, the transformer 2 is electrically connected with the power grid 1, the bidirectional converter 20 is electrically connected with the energy storage device 15, and the inverter 19 is electrically connected with the transformer 2 and the bidirectional converter 20 respectively; the PLC22, the inverter 19 and the bidirectional converter 20 are all connected with the controller 23, the frequency converter 21, the hydraulic station 7 and the torque rotation speed sensor 4 are all connected with the PLC22, and the lifting motor 3 is connected with the frequency converter 21.
The invention has two modes of energy storage and power generation, in the process of lowering the container 13 in a vertical shaft at one side, the linear motor carries out braking energy recovery, and the electromagnetic braking force generated by the linear motor can assist or replace the friction braking force of the brake 6 to finish the lowering movement of the container 13. If the container 13 is accelerated or decelerated to be lowered, the controller 23 issues instructions to the inverter 19 and the bidirectional converter 20, and the recovered electric energy is stored in the energy storage device 15, namely, the off-grid energy transmission mode; if the container 13 is lowered at a constant speed, the controller 23 issues instructions to the inverter 19, and the recovered electric energy is transmitted to the grid 1 through the transformer 2, i.e. the grid-connected energy transmission mode. In the lifting process of the container 13 in the vertical shaft at the other side, the linear motor does not work, the container 13 is lifted to the ground from underground, and the energy storage work is completed. Therefore, on the premise of not affecting the normal operation of the mine hoisting system, the invention can convert the gravitational potential energy of the container 13 into electric energy by the additionally arranged linear motor, and can assist or replace the brake 6 to finish the deceleration operation of the container, so that the lowering side of the mine hoisting system finishes the power generation operation, and the hoisting side finishes the energy storage operation.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The foregoing description is only of the preferred embodiments of the present invention, and is not intended to limit the invention, but any minor modifications, equivalents, and improvements made to the above embodiments according to the technical principles of the present invention should be included in the scope of the technical solutions of the present invention.
Claims (5)
1. A mine hoisting system lowering side gravity potential energy recovery system based on a linear motor comprises a hoisting system, a linear motor power generation system, an energy conveying system and a control system; the lifting system comprises a lifting motor (3), a lifting roller (5), friction crown wheels (9), steel wire ropes (8), a brake (6), a hydraulic station (7) and two containers (13), wherein the two containers (13) are respectively arranged in two vertical shafts, the lifting motor (3) and the lifting roller (5) are arranged on the ground of a wellhead, an output shaft of the lifting motor (3) is connected with the lifting roller (5), the brake (6) is arranged on two sides of the lifting roller (5), the brake (6) is connected with the hydraulic station (7), two steel wire ropes (8) are wound on the lifting roller (5) and wound on the lower side of the lifting roller, the friction crown wheels (9) are respectively arranged at the tops of the two vertical shafts, and the other ends of the two steel wire ropes (8) are respectively wound around one friction crown wheel (9) and then are connected with the tops of the containers (13) in the corresponding vertical shafts; it is characterized in that the method comprises the steps of,
the linear motor power generation system comprises a linear motor primary (12), a roller cage shoe group (17), a linear motor secondary (14) and an embedded linear guide rail (18); the energy conveying system comprises an inverter (19), a bidirectional converter (20), energy storage equipment (15), a transformer (2) and a power grid (1); the control system mainly comprises a controller (23), a PLC (22) and a frequency converter (21);
the two side surfaces of the container (13) are provided with roller cage shoe groups (17) and linear motor primary (12), the roller cage shoe groups (17) are longitudinally arranged in the middle of the side surface of the container (13), and the linear motor primary (12) is arranged on two sides of the roller cage shoe groups (17); the primary (12) of the linear motor is electrically connected with the inverter (19);
the well wall (16) is provided with a derrick (11), embedded linear guide rails (18) and linear motor secondary stages (14) are longitudinally arranged on two side surfaces of the derrick (11), the embedded linear guide rails (18) are arranged in the middle of the derrick (11), and the linear motor secondary stages (14) are arranged on two sides of the embedded linear guide rails (18);
the transformer (2) and the power grid (1) are arranged on the ground, the transformer (2) is electrically connected with the power grid (1), the bidirectional converter (20) is electrically connected with the energy storage equipment (15), and the inverter (19) is electrically connected with the transformer (2) and the bidirectional converter (20) respectively; the PLC (22), the inverter (19) and the bidirectional converter (20) are all connected with the controller (23), the frequency converter (21) and the hydraulic station (7) are all connected with the PLC (22), and the lifting motor (3) is connected with the frequency converter (21).
2. The mine hoisting system lowering side gravity potential energy recovery system based on the linear motor as claimed in claim 1, wherein the mine hoisting system is characterized in that: and a torque rotating speed sensor (4) is arranged on an output shaft of the lifting motor (3), and the torque rotating speed sensor (4) is connected with a PLC (22).
3. The mine hoisting system lowering side gravity potential energy recovery system based on the linear motor as claimed in claim 1, wherein the mine hoisting system is characterized in that: the roller cage shoe group (17) comprises a plurality of roller cage shoes which are longitudinally arranged at intervals.
4. A linear motor based mine hoist system lowering side gravitational potential energy recovery system as claimed in claim 3, wherein: the positions of the roller shoes correspond to the positions of the embedded linear guide rails (18), and the roller shoes are connected with the embedded linear guide rails (18).
5. A linear motor based mine hoist system lowering side gravitational potential energy recovery system as claimed in claim 3, wherein: the top of the container (13) is provided with a steel wire rope connector (10), and the steel wire rope (8) is connected with the top of the container (13) through the steel wire rope connector (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311407703.1A CN117365885A (en) | 2023-10-27 | 2023-10-27 | Mine hoisting system downward side gravity potential energy recovery system based on linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311407703.1A CN117365885A (en) | 2023-10-27 | 2023-10-27 | Mine hoisting system downward side gravity potential energy recovery system based on linear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117365885A true CN117365885A (en) | 2024-01-09 |
Family
ID=89388925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311407703.1A Pending CN117365885A (en) | 2023-10-27 | 2023-10-27 | Mine hoisting system downward side gravity potential energy recovery system based on linear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117365885A (en) |
-
2023
- 2023-10-27 CN CN202311407703.1A patent/CN117365885A/en active Pending
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