Underground emergency power supply device based on pressure power generation
Through the use of pressure -based emergency power supply devices in the underground asylum, it solves the problem of difficulty in power supply after the mines, and provides stable and renewable power to ensure the safety of the trapped persons.
Patent Information
- Application Number
- CN202411428041.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-01-24
AI Technical Summary
After the mine accident, the underground refuge chamber has difficulty supplying power, and the cables may be bent or broken, causing trapped people to be unable to obtain stable power, which increases safety risks.
Under pressure -based undercut -based emergency power supply devices, mechanical energy is converted to electrical energy through people stepped on the pressure board, and the law board is used to use the law of Faraday electromagnetic induction and mine solid waste to achieve energy -saving power.
A stable, renewable, and non -dependent power supply of the ventilation pipeline provides the danger of cable damage and power outage caused by mining difficulties, and provides valuable living time for the trapped personnel.
Smart Images
Figure CN119362665A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to an underground emergency power supply device based on pressure power generation, belonging to the technical field of pressure power generation. Background Art
[0002] At present, power cables in refuge chambers are mostly introduced in two directions through underground and ground drillings. At the same time, refuge chambers mostly use manual switching or dual-circuit starters to adopt dual power supplies. When a mine disaster occurs, the main control room cannot achieve good remote control, and there are certain safety hazards. The cable connecting the underground refuge chamber and the ground may bend or even break due to the mine disaster, and it is impossible to supply power to the survival support system of the refuge chamber normally, which may increase the danger to trapped people. Taking the above situation into consideration, in order to solve the problem of difficulty in supplying power to the underground refuge chamber after a mine disaster, the present invention proposes an underground emergency power supply device based on pressure power generation, which provides precious survival time for underground rescue. Summary of the invention
[0003] In order to solve the problem of difficulty in supplying power to underground refuge chambers after a mine disaster, the present invention aims to provide an underground emergency power supply device based on pressure power generation.
[0004] The present invention combines Faraday's law of electromagnetic induction with solid waste in mines, and designs an energy-saving device that can convert mechanical energy into electrical energy by stepping on a pressure plate. This improvement not only avoids cable breakage caused by mine collapse, but also provides a new underground power generation technology, greatly avoiding the danger of power outages for trapped personnel. Compared with the existing underground refuge chamber power supply technology based on pneumatic power generation, the electric energy provided by the present invention is more stable and renewable, avoiding the problem of ventilation duct damage caused by a mine disaster, which cannot drive the pneumatic motor normally and cannot provide continuous and stable electric energy.
[0005] The present invention provides an underground emergency power supply device based on pressure power generation, which includes a piezoelectric conversion part, a current integration part and a power storage and regulation part; the piezoelectric conversion part includes a pressure plate and a pressure power generation device, and the pressure power generation device includes: a shaft, a rigid spring, a permanent magnet, an electromagnetic coil, a fixed plate, a moving plate, a sealed cabin, a compression push rod, a piston push rod, and an insulating explosion-proof hard shell; the current integration part includes a rectifier, a filter, a voltage stabilizer, and an amplitude modulator; the power storage and regulation part includes a terminal controller, a multi-channel digital power supply and a step-up transformer.
[0006] In the piezoelectric conversion part, the internal structure of the pressure power generation device is as follows: the upper end of the rigid spring is connected to the bottom end of the pressure plate, and the lower end of the rigid spring is connected to the top of the sealed cabin; the upper end of the compression push rod is connected to the bottom end of the pressure plate, and the lower end of the compression push rod is connected to the top of the sealed cabin; a small hole is opened around the sealed cabin and four piston push rods are connected respectively, four groups of permanent magnets are fixed on four moving plates and are connected to the sealed cabin through piston push rods respectively; the four groups of electromagnetic coils are fixed around the inner wall of the insulating explosion-proof hard shell through four fixed plates; the top end of the shaft is connected to the bottom end of the sealed cabin, and the bottom end of the shaft is connected to the bottom plate of the pressure power generation device.
[0007] Compared with the existing pressure power generation technology, the present invention has made improvements in the structure of the pressure power generation device. The electromagnetic coil is fixed to the inner wall of the device through a fixed plate, and the permanent magnet is connected to the piston push rod through a moving plate. By changing the pressure in the vertical direction, the compression push rod is driven to move in the vertical direction, thereby realizing the expansion and compression of the air in the sealed cabin. Under the action of the compression push rod, the moving plate drives the permanent magnet to approach the electromagnetic coil and insert it horizontally, thereby generating an induced electromotive force. At the same time, the appearance of the device is designed as a rectangular structure. Compared with the existing cylindrical structure, this improvement can add two more sets of electromagnetic coils around the inner wall; the sealed cabin is designed to be connected to the piston push rod in four directions. Compared with the existing technology, this improvement can add two more sets of permanent magnets and electromagnetic coils, which can increase the power generation.
[0008] Furthermore, in the piezoelectric conversion part, the pressure plate is made of recycled and recasted solid waste from mines; the manufacturing process of the pressure plate made of recycled and recasted solid waste from mines is: after crushing and preheating the coal gangue, add 1%-3% by mass of steel fiber to increase its tensile properties, stir evenly, then add grouting material made of bentonite, fly ash, and desulfurized gypsum in a mass ratio of 2:2:1 to solidify the heavy metals in the coal gangue, and finally add 42.5 ordinary Portland cement with a mass ratio of 10% of the total material, add water and stir evenly, and the solid content is 95%; pour the prepared material into the mold, wait for it to solidify, demold and maintain it before putting it into use. Further, the fixed plate is a rectangular plate, and a number of electromagnetic coils are evenly and vertically connected on the rectangular plate; the moving plate is arranged in parallel with the fixed plate, and is also a rectangular plate, and a number of permanent magnets are evenly and vertically connected on the rectangular plate, and the permanent magnets and electromagnetic coils are arranged one by one. In the static state, the permanent magnet and the electromagnetic coil are at the same level. When under force, the permanent magnet moves and enters between the two sets of electromagnetic coils, generating an induced electromotive force.
[0009] In the piezoelectric conversion part, the principle of pressure power generation is as follows: when the human body steps on the pressure plate, the top plate of the pressure power generation device drives the compression push rod to move downward due to the effect of gravity, the air in the sealed cabin is compressed, and the four piston push rods are driven to produce horizontal displacement away from the sealed cabin. The four groups of permanent magnets connected to the four moving plates are also horizontally displaced and inserted into the electromagnetic coil, thereby generating an induced electromotive force in one direction; when the human body leaves the pressure plate, the rigid spring recovers the deformation and drives the compression push rod to move upward. At this time, the gas in the sealed cabin expands, the internal pressure decreases, and the piston push rod is driven to produce horizontal displacement close to the sealed cabin. The permanent magnet is also extracted from the electromagnetic coil, and an induced electromotive force in the opposite direction is generated. In a cycle of human body stepping on and moving away from the pressure plate, a group of induced electromotive forces of equal size and opposite direction are generated.
[0010] In the current integration part, the function of the rectifier is to convert a group of alternating currents of equal magnitude and opposite directions into a group of direct currents of equal magnitude and the same direction; the function of the filter is to convert the half-wave voltage into a smooth direct current voltage; the function of the voltage stabilizer is to stabilize the generated direct current to the required voltage; the function of the amplitude modulator is to realize the long-distance transmission of the signal, facilitating the subsequent power distribution.
[0011] In the energy storage and control part, the function of the terminal controller is to distribute electric energy after analyzing the power consumption of each refuge chamber; the function of the multi-channel digital power supply is to connect with the terminal controller to realize the output of multiple power supplies; the function of the step-up transformer is to boost the stored electric energy to the working voltage for supplying the rescue equipment in the chamber.
[0012] The underground emergency power supply device based on pressure power generation has a pressure plate size of 75cm*75cm*10cm. A device burial pit is made according to the size of 77cm*77cm, and a moisture-proof mat is laid at the bottom of the burial pit. The burial pit is covered with cement on all sides and well maintained. The device is placed in the burial pit, and it is ensured that the top of the pressure plate is level with the ground. Finally, the surface of the pressure plate is covered with industrial moisture-proof cloth, and asphalt is poured around the moisture-proof cloth to ensure moisture-proof, dust-proof and explosion-proof work.
[0013] The underground emergency power supply device based on pressure power generation, in which all components in the current integration part are laid in the buried pit, and several groups of power generation units in a chamber are connected by wires. A small distribution station is set in each chamber to store the electric energy collected in a chamber together, so that each chamber can generate electricity by itself when a mine disaster occurs. At the same time, a main distribution station is set in the mine, and the electric energy collected by the small distribution stations in each chamber can be transported to the main distribution station through wires. Under the action of the terminal controller, multi-channel digital power supply and step-up transformer, the main distribution station can replenish electricity in time according to the power consumption of each chamber. The above two power supply methods make up for the shortcomings of the original cables that may cause the power supply from the well to the underground refuge chamber to be twisted and broken when a mine disaster occurs, and realize the complementarity of electric energy in space and time.
[0014] The present invention provides a method for using the above-mentioned underground emergency power supply device based on pressure power generation, which is specifically as follows: when a person steps on the pressure plate, the pressure plate is driven to move downward due to the action of gravity. At this time, the air in the sealed cabin is compressed under the action of the compression push rod. As the pressure in the sealed cabin increases, the piston push rod is pushed to move in the horizontal direction. The permanent magnet fixed on the moving plate also moves in the horizontal direction with the piston push rod and is horizontally inserted into two adjacent groups of electromagnetic coils. At this time, a group of induced electromotive force is generated; when the person leaves the pressure plate, the compression push rod and the pressure plate are driven to reset under the action of the rigid spring, and the air in the sealed cabin begins to expand, driving the piston push rod to reset. At this time, the permanent magnet is extracted from the electromagnetic coil, generating an induced electromotive force of equal magnitude and opposite direction. The two parts of induced electromotive force are collected and transformed into two groups of direct current of equal size and direction through the action of rectifier, filter and voltage stabilizer. The generated electric energy is stored in the small distribution station in the chamber by wire. The small distribution station stores the generated electric energy in the main distribution station of the mine through the wire after the action of the amplitude modulator. After the mine disaster occurs, the small distribution station in each chamber will first supply power. If there is a shortage of electric energy, it will be calculated by the terminal controller of the main distribution station and distributed to each chamber through multiple digital power supplies. At the same time, the cable interface between the main power supply and the main distribution station is retained, and power can also be supplied from the ground to the underground through cables after the mine disaster occurs.
[0015] Beneficial effects of the present invention: (1) The present invention solves the problem of failure to supply power to the refuge chamber normally due to cable bending, breaking or other force majeure factors when a mining accident occurs, thereby providing trapped personnel with a feasible way to actively save themselves and providing them with precious survival time for rescue; (2) By setting up distribution stations and main distribution stations, the complementarity of electric energy in time and space is achieved; (3) The purpose of saving resources is achieved by recycling and recasting the pressure plates from mining solid waste. This is of great significance for protecting the lives of miners and promoting the use of pressure power generation technology in mining areas. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a diagram showing the use of the underground emergency power supply device based on pressure power generation according to the present invention; Figure 2 This is a schematic diagram of the structure of the pressure plate of the piezoelectric conversion part of the present invention; Figure 3 This is a structural diagram of a pressure power generation device; Figure 4 for Figure 3 Sectional view along line AA.
[0017] In the figure: 1 is a rectifier, 2 is a filter, 3 is a voltage stabilizer, 4 is an amplitude modulator, 5 is a pressure plate, 6 is an insulating explosion-proof hard shell, 7 is a rigid spring, 8 is a compression push rod, 9 is an electromagnetic coil, 10 is a permanent magnet, 11 is a fixed plate, 12 is a moving plate, 13 is a sealed cabin, 14 is a piston push rod, 15 is a shaft, and 16 is a bottom plate. DETAILED DESCRIPTION
[0018] The present invention is further illustrated by the following examples, but is not limited to the following examples. Example 1
[0019] like Figures 1 to 4 As shown, an underground emergency power supply device based on pressure power generation includes a piezoelectric conversion part, a current integration part and a power storage control part; the piezoelectric conversion part includes a pressure plate 5 and a pressure power generation device, and the pressure power generation device includes: a shaft 15, a rigid spring 7, a permanent magnet 10, an electromagnetic coil 9, a fixed plate 11, a moving plate 12, a sealed cabin 13, a compression push rod 8, a piston push rod 14, and an insulating explosion-proof hard shell 6; the current integration part includes a rectifier 1, a filter 2, a voltage stabilizer 3, and an amplitude modulator 4; the power storage control part includes a terminal controller, a multi-channel digital power supply and a step-up transformer.
[0020] In the piezoelectric conversion part, the structure of the pressure power generation device is as follows: the upper end of the rigid spring 7 is connected to the bottom of the pressure plate 5, and the lower end of the rigid spring 7 is connected to the top of the sealed cabin 13; the upper end of the compression push rod 8 is connected to the bottom of the pressure plate 5, and the lower end of the compression push rod 8 is connected to the top of the sealed cabin 13; a small hole is opened in each of the front, rear, left and right directions of the sealed cabin 13 and four piston push rods 14 are connected respectively, four groups of permanent magnets 10 are fixed on four moving plates 12, and are connected to the sealed cabin 13 respectively through the piston push rods 14; the four groups of electromagnetic coils 9 are fixed around the inner wall of the insulating explosion-proof hard shell 6 through four fixed plates 11; the top end of the shaft 15 is connected to the bottom end of the sealed cabin 13, and the bottom end of the shaft 15 is connected to the bottom plate 16 of the pressure power generation device.
[0021] The fixed plate is a rectangular plate, on which a number of electromagnetic coils are evenly and vertically connected; the moving plate is arranged in parallel with the fixed plate, and is also a rectangular plate, on which a number of permanent magnets are evenly and vertically connected, and the permanent magnets and the electromagnetic coils are arranged in a one-to-one correspondence.
[0022] The pressure power generation device is designed to be a rectangular structure, and electromagnetic coils are evenly arranged in four directions on the inner wall.
[0023] In the piezoelectric conversion part, the pressure plate is made by recycling and recasting solid waste from mines.
[0024] The manufacturing process of the pressure plate is as follows: after crushing and preheating the coal gangue, 1%-3% steel fiber is added to increase its tensile properties, and after stirring evenly, a grouting material made of bentonite, fly ash, and desulfurized gypsum in a mass ratio of 2:2:1 is added to solidify the heavy metals in the coal gangue, and finally 42.5 ordinary Portland cement with a mass ratio of 10% of the total material is added, and water is added to stir evenly, with a solid content of 95%; the prepared material is poured into a mold, and after it solidifies, it is demolded and cured before being put into use.
[0025] In the above-mentioned piezoelectric conversion part, the principle of pressure power generation is as follows: when the human body steps on the pressure plate, the top plate of the pressure power generation device drives the compression push rod to move downward due to the effect of gravity, the air in the sealed cabin is compressed, and the four piston push rods are driven to produce a horizontal displacement away from the sealed cabin. The four groups of permanent magnets connected to them and fixed on the four moving plates also produce a horizontal displacement and are inserted into the electromagnetic coil, thereby generating an induced electromotive force in one direction; when the human body leaves the pressure plate, the rigid spring recovers the deformation and drives the compression push rod to move upward. At this time, the gas in the sealed cabin expands, the internal pressure decreases, and the piston push rod is driven to produce a horizontal displacement close to the sealed cabin. The permanent magnet is also extracted from the electromagnetic coil, and an induced electromotive force in the opposite direction is generated. In a cycle of human body stepping on the pressure plate and moving away from the pressure plate, a group of induced electromotive forces of equal size and opposite direction are generated. The present invention generates an induced electromotive force by cutting the magnetic flux lines by permanent magnets, which is different from the principle of realizing the conversion of mechanical energy and electrical energy through vector conversion materials in the existing mining power generation technology based on piezoelectric ceramics.
[0026] The size of the pressure plate is 75cm*75cm*10cm. The device burial pit is made according to the size of 77cm*77cm, and a moisture-proof mat is laid at the bottom of the burial pit. The burial pit is covered with cement and maintained on all sides. The underground emergency power supply device is placed in the burial pit, and the top of the pressure plate is ensured to be level with the ground. Finally, the surface of the pressure plate is covered with industrial moisture-proof cloth, and asphalt is poured around the moisture-proof cloth to ensure moisture-proof, dust-proof and explosion-proof work.
[0027] In the current integration part, the function of the rectifier is to convert a group of alternating currents of equal magnitude and opposite directions into a group of direct currents of equal magnitude and the same direction; the function of the filter is to convert the half-wave voltage into a smooth direct current voltage; the function of the voltage stabilizer is to stabilize the generated direct current to the required voltage; the function of the amplitude modulator is to realize the long-distance transmission of the signal and facilitate the subsequent power distribution.
[0028] In the energy storage and control part, the terminal controller distributes electric energy after analyzing the power consumption of each refuge chamber; multiple digital power supplies are connected to the terminal controller for the output of multiple power supplies; the step-up transformer boosts the stored electric energy to the working voltage for use by the rescue equipment in the chamber.
[0029] The underground emergency power supply device based on pressure power generation provided by the present invention has the following usage method: when a person steps on the pressure plate, the pressure plate is driven to move downward due to the action of gravity, and at this time, the air in the sealed cabin is compressed under the action of the compression push rod. As the pressure in the sealed cabin increases, the piston push rod is pushed to move in the horizontal direction, and the permanent magnet fixed on the moving plate is also displaced in the horizontal direction along with the piston push rod, and is horizontally inserted into the electromagnetic coil fixed on the inner wall of the device through the fixed plate, and a group of induced electromotive forces are generated at this time; when the person leaves the pressure plate, the compression push rod and the pressure plate are driven to reset under the action of the rigid spring, and the air in the sealed cabin begins to expand, driving the piston push rod to reset, and at this time the permanent magnet is extracted from the electromagnetic coil, generating an induced electromotive force of equal magnitude and opposite direction. The two parts of induced electromotive force are collected and transformed into two groups of direct current of equal size and direction through the action of rectifier, filter and voltage stabilizer. The generated electric energy is stored in the small distribution station in the chamber by wire. The small distribution station stores the generated electric energy in the main distribution station of the mine through the wire after the action of the amplitude modulator. After the mine disaster occurs, the small distribution station in each chamber will first supply power. If there is a shortage of electric energy, it will be calculated by the terminal controller of the main distribution station and distributed to each chamber through multiple digital power supplies. At the same time, the cable interface between the main power supply and the main distribution station is retained, and power can also be supplied from the ground to the underground through cables after the mine disaster occurs.
Claims
1. An underground emergency power supply device based on pressure power generation, characterized in that: It includes piezoelectric conversion part, current integration part and power storage regulation part; The piezoelectric conversion part includes a pressure plate and a pressure power generation device, and the pressure power generation device includes: a shaft, a rigid spring, a permanent magnet, an electromagnetic coil, a fixed plate, a moving plate, a sealed cabin, a compression push rod, a piston push rod, and an insulating explosion-proof hard shell; The current integration part includes a rectifier, a filter, a voltage stabilizer, and an amplitude modulator; the power storage regulation part includes a terminal controller, a multi-channel digital power supply, and a step-up transformer.
2. The underground emergency power supply device based on pressure power generation according to claim 1 is characterized in that: In the piezoelectric conversion part, the structure of the pressure power generation device is as follows: the upper end of the rigid spring is connected to the bottom of the pressure plate, and the lower end of the rigid spring is connected to the top of the sealed cabin; the upper end of the compression push rod is connected to the bottom of the pressure plate, and the lower end of the compression push rod is connected to the top of the sealed cabin; a small hole is opened in each of the front, rear, left and right directions of the sealed cabin and four piston push rods are connected respectively, four groups of permanent magnets are fixed on four moving plates and are connected to the sealed cabin respectively through piston push rods; the four groups of electromagnetic coils are fixed on the inner wall of the insulating explosion-proof hard shell through four fixed plates; the top end of the shaft is connected to the bottom end of the sealed cabin, and the bottom end of the shaft is connected to the bottom plate of the pressure power generation device.
3. The underground emergency power supply device based on pressure power generation according to claim 2 is characterized in that: The fixed plate is a rectangular plate, on which a number of electromagnetic coils are evenly and vertically connected; the moving plate is arranged in parallel with the fixed plate, and is also a rectangular plate, on which a number of permanent magnets are evenly and vertically connected, and the permanent magnets and the electromagnetic coils are arranged in a one-to-one correspondence.
4. The underground emergency power supply device based on pressure power generation according to claim 2 is characterized in that: The pressure power generation device is designed to be a rectangular structure, and electromagnetic coils are evenly arranged in four directions on the inner wall.
5. The underground emergency power supply device based on pressure power generation according to claim 1 is characterized in that: In the piezoelectric conversion part, the pressure plate is made by recycling and recasting solid waste from mines.
6. The underground emergency power supply device based on pressure power generation according to claim 5 is characterized in that: The manufacturing process of the pressure plate is as follows: after crushing and preheating the coal gangue, 1%-3% by mass of steel fiber is added to increase its tensile properties, and after stirring evenly, a grouting material made of bentonite, fly ash, and desulfurized gypsum in a mass ratio of 2:2:1 is added to solidify the heavy metals in the coal gangue, and finally 10% by mass of 42.5 ordinary Portland cement is added to the total material, and water is added to stir evenly, with a solid content of 95%; the prepared material is poured into a mold, and after solidification, it is demolded and cured before being put into use.
7. The underground emergency power supply device based on pressure power generation according to claim 5 is characterized in that: The size of the pressure plate is 75cm*75cm*10cm. The device burial pit is made according to the size of 77cm*77cm, and a moisture-proof mat is laid at the bottom of the burial pit. The burial pit is covered with cement and maintained on all sides. The underground emergency power supply device is placed in the burial pit, and the top of the pressure plate is ensured to be level with the ground. Finally, the surface of the pressure plate is covered with industrial moisture-proof cloth, and asphalt is poured around the moisture-proof cloth to ensure moisture-proof, dust-proof and explosion-proof work.
8. The underground emergency power supply device based on pressure power generation according to claim 1 is characterized in that: In the current integration part, the function of the rectifier is to convert a group of alternating currents of equal magnitude and opposite directions into a group of direct currents of equal magnitude and the same direction; the function of the filter is to convert the half-wave voltage into a smooth direct current voltage; the function of the voltage stabilizer is to stabilize the generated direct current to the required voltage; the function of the amplitude modulator is to realize the long-distance transmission of the signal and facilitate the subsequent distribution of electric energy; all components in the current integration part are laid in the buried pit, and several groups of power generation units in a chamber are connected by wires. A small distribution station is set up in each chamber to store the electric energy collected in a chamber together; a main distribution station is set up in the mine, and the electric energy collected by the small distribution stations in each chamber is transported to the main distribution station through wires. Under the action of the terminal controller, multi-channel digital power supply and step-up transformer, the main distribution station can replenish electricity in time according to the power consumption of each chamber.
9. The underground emergency power supply device based on pressure power generation according to claim 1 is characterized in that: In the energy storage control part, the terminal controller distributes electric energy after analyzing the power consumption of each refuge chamber; The multiple digital power supplies are connected to the terminal controller for outputting the multiple power supplies; The step-up transformer boosts the stored electrical energy to the operating voltage and supplies it to the rescue equipment in the chamber.
10. A method for using the underground emergency power supply device based on pressure power generation according to any one of claims 1 to 9, characterized in that: When a person steps on the pressure plate, the pressure plate moves downward due to gravity. At this time, the air in the sealed cabin is compressed by the compression push rod. As the pressure in the sealed cabin increases, the piston push rod is pushed to move in the horizontal direction. The permanent magnet fixed on the moving plate also moves in the horizontal direction with the piston push rod and is horizontally inserted into two adjacent sets of electromagnetic coils. At this time, a set of induced electromotive force is generated; when the person leaves the pressure plate, the compression push rod and the pressure plate are reset under the action of the rigid spring, and the air in the sealed cabin begins to expand, driving the piston push rod to reset. At this time, the permanent magnet is extracted from the electromagnetic coil, generating an induced electromotive force of equal magnitude and opposite direction; these two parts of the induced electromotive force are collected and converted into two sets of direct current of equal magnitude and the same direction through the action of rectifiers, filters, and voltage stabilizers. The generated electric energy is stored in a small distribution station in the chamber by wires. The small distribution station stores the generated electric energy in the main distribution station of the mine through wires after the action of an amplitude modulator.