CN113738574A - Monitoring control device and control method for bladeless wind driven generator - Google Patents
Monitoring control device and control method for bladeless wind driven generator Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 48
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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
- F03D—WIND MOTORS
- F03D5/00—Other wind motors
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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
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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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
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
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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
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention discloses a monitoring and controlling device of a bladeless wind driven generator, which comprises an energy capturing system and a monitoring and controlling system; the energy capturing system comprises an energy capturing column shell, an energy capturing column rod and a mounting bracket; the energy capturing column shell is fixed on the mounting bracket, and the energy capturing column rod is fixedly connected with the energy capturing column mounting bracket; the lower end of the energy capturing pole is fixedly connected with a first connecting rod at the upper end, the lower end of the first connecting rod is connected with an energy transfer system, the lower end of the energy transfer system is connected with an energy conversion system, and a resetting and auxiliary starting system and a braking system are arranged on the first connecting rod; the monitoring and control system is used for detecting and controlling the working state of the whole device. The monitoring and controlling device of the bladeless wind driven generator is compact in structure, adopts a modular design, and is low in manufacturing, mounting and maintaining cost.
Description
Technical Field
The invention relates to a monitoring control device and a monitoring control method for a bladeless wind driven generator.
Background
With the continuous consumption of traditional energy sources such as coal, oil, natural gas and the like and the increasing severity of environmental problems, people pay more attention to the development and utilization of renewable and clean energy sources. The wind power generation technology attracts high attention and research of all countries in the world due to the advantages of large total amount, no pollution and the like of wind energy.
In the wind power generation technology, blades drive a generator to generate electricity, but the wind power generation technology is high in manufacturing, maintenance and installation cost, easy to limit by wind direction, low in land utilization rate, high in noise, capable of influencing ecology and the like, so that wide popularization of the technology is limited, and wind power generation is mainly centralized in a wind field unit.
The bladeless wind driven generator provided by utilizing the Karman vortex street phenomenon has the advantages of compact structure, low manufacturing and maintenance cost, low noise and the like, can effectively improve the utilization rate of wind energy, and meets the requirement of distributed arrangement. The basic principle of the bladeless wind driven generator is that when incoming flow bypasses an energy capturing column of the wind driven generator under certain conditions, generated vortexes periodically fall off on two sides of the energy capturing column, a karman vortex street phenomenon occurs, an alternating transverse acting force is generated on the energy capturing column, the energy capturing column vibrates, kinetic energy in the incoming flow is converted into mechanical energy, and then the mechanical energy is utilized for power generation. The amplitude of the vibration of the energy capturing column is related to the incoming wind speed and the inherent properties of the bladeless wind turbine. When the wind speed is high, the structure of the wind driven generator is damaged or even loses efficacy due to overlarge vibration amplitude, and when the wind speed is low, the energy capturing column cannot vibrate due to alternating acting force generated by vortex shedding, so that the wind driven generator does not work, and the wind energy utilization rate is reduced. In addition, in order to fully improve the wind energy utilization rate, the energy capturing column shell is generally made of materials such as carbon fiber or light glass fiber reinforced plastics and the like so as to reduce the quality of the energy capturing column, and when the energy capturing column shell made of the carbon fiber or the light glass fiber reinforced plastics cracks and gaps, if the energy capturing column shell continues to work, the cracks and the gaps are further expanded so as to reduce the wind energy capturing rate of the bladeless wind driven generator, and even the bladeless wind driven generator fails.
Disclosure of Invention
In order to solve the technical problems, the invention provides a monitoring and controlling device of a bladeless wind driven generator, which is simple in structure and reliable in work, and a controlling method thereof.
The technical scheme for solving the problems is as follows: a monitoring and controlling device for a bladeless wind driven generator comprises an energy capturing system, a resetting and auxiliary starting system, a braking system, an energy transmission system, an energy conversion system and a monitoring and controlling system;
the energy capturing system comprises an energy capturing column shell, an energy capturing column rod and a mounting bracket; the energy capturing column shell is fixed on the mounting support, the energy capturing column rod is fixedly connected with the energy capturing column mounting support, when wind bypasses the energy capturing column shell, alternately falling vortexes are formed on two sides of the rear surface of the energy capturing column shell, so that the energy capturing column shell generates vortex-induced vibration, and then the energy capturing column shell drives the energy capturing column rod to vibrate through the mounting support, so that the wind energy is converted into mechanical energy of an energy capturing system;
the lower end of the energy capturing pole is fixedly connected with a first connecting rod at the upper end, the lower end of the first connecting rod is connected with an energy transmission system, and the periodic vibration of the first connecting rod is converted into up-and-down reciprocating motion, so that the mechanical energy transmission is realized;
the lower end of the energy transmission system is connected with an energy conversion system, and the conversion from mechanical energy to electric energy is realized through the up-and-down reciprocating motion, so that the mechanical energy captured from wind energy by the energy capturing system is converted into electric energy;
the first connecting rod is provided with a resetting and auxiliary starting system and a braking system;
the monitoring and control system is used for detecting and controlling the working state of the whole device.
According to the monitoring and controlling device for the bladeless wind driven generator, the energy transmission system comprises a spherical pair mounting bracket and a second connecting rod, the energy capturing pole transmits the vibration mechanical energy of the energy capturing system to the first connecting rod, the lower end of the first connecting rod is provided with two spherical surfaces, the first spherical surface is matched with the spherical pair mounting bracket to form a first spherical pair, the first spherical pair plays a role of a supporting point, and the movement of the first connecting rod in the horizontal direction is limited while the left and right periodic vibration of the first connecting rod is kept; the second spherical surface of the first connecting rod is connected with the upper end of the second connecting rod to form a second spherical pair, and the lower end auxiliary surface of the second connecting rod is connected with the driving rod of the generator rotor to form a third spherical pair; under the combined action of the first spherical pair, the second spherical pair and the third spherical pair, the periodic vibration transmitted by the second connecting rod is converted into the vertical reciprocating motion of the generator rotor driving rod along the axis direction, so that the mechanical energy transmission is realized.
According to the monitoring and controlling device for the bladeless wind driven generator, the energy conversion system comprises a generator cylinder, an installation base, an installation disc, a generator rotor, a generator stator and a generator shell, the generator cylinder is fixed on the installation base, the installation disc is arranged on the inner wall of the lower part of the generator cylinder, the generator shell is fixedly arranged on the installation disc, the generator stator is fixed on the generator shell, the generator rotor is positioned on the inner side of the generator stator, and a generator rotor driving rod is fixedly connected with the generator rotor; when the generator rotor driving rod drives the generator rotor to reciprocate up and down, the generator rotor and the generator stator mutually act to cut the magnetic induction lines and generate current, so that the conversion from mechanical energy to electric energy is realized, and the mechanical energy captured from wind energy by the energy capturing system is converted into electric energy.
The monitoring and controlling device of the bladeless wind driven generator is characterized in that the resetting and auxiliary starting system comprises a resetting system mounting cylinder, a resetting spring mounting cylinder, a first electromagnetic coil, a second electromagnetic coil, a third electromagnetic coil and an auxiliary resetting magnet, wherein the resetting spring mounting cylinder is sleeved and fixed on a first connecting rod, the auxiliary resetting magnet is fixed on the resetting spring mounting cylinder, the resetting system mounting cylinder is sleeved outside the resetting spring mounting cylinder, the lower end of the resetting system mounting cylinder is fixedly connected with a generator cylinder body, a plurality of resetting springs are uniformly arranged along the circumferential direction of the resetting spring mounting cylinder, one end of each resetting spring is fixedly connected with the resetting system mounting cylinder, and the other end of each resetting spring is fixedly connected with the resetting spring mounting cylinder; the first electromagnetic coil, the second electromagnetic coil and the third electromagnetic coil which are positioned on the same horizontal plane are uniformly distributed on the inner wall of the reset system mounting cylinder, and relays in the circuits of the first electromagnetic coil, the second electromagnetic coil and the third electromagnetic coil are connected with a monitoring and control system; when the first connecting rod swings around the first spherical pair under the driving of the energy capturing system, the return spring is repeatedly pulled and pressed, and the resultant force of the return spring is opposite to the swinging direction of the first connecting rod to reset the first connecting rod, so that the energy capturing system periodically swings around the first spherical pair.
The monitoring and controlling device of the bladeless wind driven generator comprises a braking system, a first connecting rod, a second connecting rod, a first mounting cylinder, a second mounting cylinder, a first hydraulic oil tank, a first hydraulic oil pump, a first hydraulic oil tank, a second hydraulic oil tank, a third hydraulic oil tank, a fourth hydraulic oil tank, a mounting plate, a hydraulic oil and a hydraulic oil tank; the hydraulic motor controls the hydraulic pump, mechanical energy is converted into kinetic energy of hydraulic oil, the kinetic energy is transmitted to the hydraulic actuating element through the hydraulic pipeline, the brake pads which are uniformly distributed under the driving of the hydraulic actuating element move to the initial axis of the first connecting rod at the same speed until the brake pads are contacted with the brake cylinder, and braking is carried out.
The monitoring and controlling system comprises a first laser sensor, a second laser sensor, a third laser sensor, a wind speed sensor, a wind direction sensor, an illumination sensor and a microprocessor, wherein the first laser sensor, the second laser sensor and the third laser sensor are uniformly arranged on the resetting system mounting cylinder and are positioned on the same horizontal plane, and the first laser sensor, the second laser sensor and the third laser sensor respectively measure the distances between the first laser sensor, the second laser sensor and the first connecting rod, convert the distances into digital signals and transmit the digital signals to the microprocessor; the wind speed sensor and the wind direction sensor are arranged in a wind field, the wind speed and the wind direction are measured respectively, the wind speed and the wind direction are converted into digital signals and then transmitted to the microprocessor, the plurality of illumination sensors are uniformly arranged on the mounting support, light intensity signals detected by the illumination sensors are transmitted to the microprocessor, the microprocessor analyzes the received signals and then outputs control signals to the reset and auxiliary starting system and the braking system, and the reset and auxiliary starting system and the braking system are controlled to work.
According to the monitoring and controlling device for the bladeless wind driven generator, the upper end of the energy capturing pole is provided with the balancing weight, and the energy capturing pole shell is provided with the reinforcing rib.
According to the monitoring and controlling device for the bladeless wind driven generator, the brake pads are in a step shape.
A monitoring control method for a bladeless wind driven generator comprises the following steps:
the method comprises the following steps: the illumination sensor detects the illumination inside the energy capturing column shell in real time and sends an illumination intensity signal to the microprocessor;
step two: the microprocessor judges whether the illumination intensity is less than or equal to the rated illumination intensity, if so, the bladeless wind driven generator works normally, otherwise, the step three is carried out;
step three: the microprocessor transmits the result to the gateway through the bus, and the gateway transmits the result to the interaction interface through the wireless or optical fiber to remind an operator; the microprocessor simultaneously sends a braking instruction to a braking system to control the bladeless wind driven generator to stop working;
step four: and the microprocessor judges whether a restart starting instruction is received, if so, a braking canceling instruction is started to the braking system, the bladeless wind power generator is restarted, and otherwise, the bladeless wind power generator still stops working.
The monitoring control method of the bladeless wind driven generator further comprises the following steps: when the bladeless wind driven generator needs conventional maintenance or other needs to be stopped, an operator directly inputs a stop instruction through the interactive interface, the microprocessor sends a brake instruction to the brake system after receiving the stop instruction, and the brake disc brakes the first connecting rod, so that the bladeless wind driven generator is stopped.
The invention has the beneficial effects that: the monitoring and controlling device of the bladeless wind driven generator is compact in structure, adopts a modular design, and is low in manufacturing, mounting and maintaining cost. The control method can realize the automatic control of the bladeless wind driven generator according to specific working conditions, and a user can remotely monitor the bladeless wind driven generator, thereby meeting the requirement of distributed arrangement of the bladeless wind driven generator, simultaneously expanding the working wind speed range of the bladeless wind driven generator and improving the wind energy utilization rate.
Drawings
Fig. 1 is a schematic view of the overall structure of the control device of the present invention.
Fig. 2 is a schematic diagram of an energy delivery system configuration.
Fig. 3 is a schematic diagram of a reset and auxiliary start system.
Fig. 4 is a schematic diagram of the first link instantaneous position calculation.
Fig. 5 is a schematic diagram of an auxiliary reset.
Fig. 6 is an auxiliary start schematic.
Fig. 7 is a schematic view of the brake system configuration.
FIG. 8 is a brake system braking schematic.
Fig. 9 is a front view of the brake pad.
Fig. 10 is a left side view of the brake pad.
Fig. 11 is a brake pad top view.
Fig. 12 is a schematic diagram of energy capture column housing monitoring and control.
FIG. 13 is a monitoring and control system schematic.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in FIG. 1, the monitoring and controlling device for the bladeless wind driven generator comprises an energy capturing system, a resetting and auxiliary starting system, a braking system, an energy transmission system, an energy conversion system and a monitoring and controlling system;
the energy capturing system comprises an energy capturing column shell 1, an energy capturing column rod 2 and a mounting bracket 3; the energy capturing column shell 1 is fixed on the mounting bracket 3, the energy capturing column rod 2 is fixedly connected with the energy capturing column mounting bracket 3, and the upper end of the energy capturing column rod 2 is provided with a balancing weight 21; in addition, in order to enhance the strength of the energy capturing column shell 1, reinforcing ribs 4 are arranged on the energy capturing column shell 1; when wind bypasses the energy capturing column shell 1, alternately falling vortexes are formed at two sides of the back of the energy capturing column shell 1, so that the energy capturing column shell 1 generates vortex-induced vibration, and then the energy capturing column shell 1 drives the energy capturing column rod 2 to vibrate through the mounting bracket 3, so that the wind energy is converted into mechanical energy of an energy capturing system;
the lower end of the energy capturing pole 2 is fixedly connected with a first connecting rod 19 at the upper end, the lower end of the first connecting rod 19 is connected with an energy transmission system, and the periodic vibration of the first connecting rod 19 is converted into up-and-down reciprocating motion, so that the mechanical energy transmission is realized;
the lower end of the energy transmission system is connected with an energy conversion system, and the conversion from mechanical energy to electric energy is realized through the up-and-down reciprocating motion, so that the mechanical energy captured from wind energy by the energy capturing system is converted into electric energy;
a reset and auxiliary starting system and a braking system are arranged on the first connecting rod 19;
the monitoring and control system is used for detecting and controlling the working state of the whole device.
As shown in fig. 2, the energy transmission system comprises a spherical pair mounting bracket 10 and a second connecting rod 18, the energy capturing pole 2 transmits the vibration mechanical energy of the energy capturing system to a first connecting rod 19, the lower end of the first connecting rod 19 is provided with two spherical surfaces, the first spherical surface is matched with the spherical pair mounting bracket 10 to form a first spherical pair 34, and the first spherical pair 34 plays a role of a supporting point and limits the horizontal movement of the first connecting rod 19 while keeping the left-right periodic vibration of the first connecting rod; the second spherical surface of the first connecting rod 19 is connected with the upper end of the second connecting rod 18 to form a second spherical surface pair 35, and the lower end auxiliary surface of the second connecting rod 18 is connected with the generator rotor driving rod 17 to form a third spherical surface pair 36; under the combined action of the first spherical pair 34, the second spherical pair 35 and the third spherical pair 36, the periodic vibration transmitted by the second connecting rod 18 is converted into the vertical reciprocating motion of the generator rotor driving rod 17 along the axial direction, so that the mechanical energy transmission is realized.
The energy conversion system comprises a generator cylinder 13, an installation base 14, an installation disc 15, a generator rotor 16, a generator stator 12 and a generator shell 11, wherein the generator cylinder 13 is fixed on the installation base 14, the installation disc 15 is arranged on the inner wall of the lower part of the generator cylinder 13, the generator shell 11 is fixedly arranged on the installation disc 15, the generator stator 12 is fixed on the generator shell 11, the generator rotor 16 is positioned on the inner side of the generator stator 12, and a driving rod of the generator rotor 16 is fixedly connected with the generator rotor 16; when the generator rotor driving rod 17 drives the generator rotor 16 to reciprocate up and down, the generator rotor 16 and the generator stator 12 mutually act to cut magnetic induction lines and generate current, so that conversion from mechanical energy to electric energy is realized, and the mechanical energy captured from wind energy by the energy capturing system is converted into electric energy.
As shown in fig. 3, the resetting and auxiliary starting system includes a resetting system mounting cylinder 5, a resetting spring 6, a resetting spring mounting cylinder 8, a first electromagnetic coil 22, a second electromagnetic coil 23, a third electromagnetic coil 24 and an auxiliary resetting magnet 7, the resetting spring mounting cylinder 8 is sleeved and fixed on the first connecting rod 19, the auxiliary resetting magnet 7 is fixed on the resetting spring mounting cylinder 8, the resetting system mounting cylinder 5 is sleeved outside the resetting spring mounting cylinder 8, the lower end of the resetting system mounting cylinder 5 is fixedly connected with the generator cylinder 13, the plurality of resetting springs 6 are uniformly arranged along the circumferential direction of the resetting spring mounting cylinder 8, one end of the resetting spring 6 is fixedly connected with the resetting system mounting cylinder 5, and the other end is fixedly connected with the resetting spring mounting cylinder 8; the first electromagnetic coil 22, the second electromagnetic coil 23 and the third electromagnetic coil 24 which are positioned on the same horizontal plane are uniformly distributed on the inner wall of the resetting system mounting cylinder 5, and relays in the circuits of the first electromagnetic coil 22, the second electromagnetic coil 23 and the third electromagnetic coil 24 are connected with a monitoring and control system; when the first connecting rod 19 swings around the first spherical pair 34 under the driving of the energy capturing system, the return spring 6 is repeatedly pulled and pressed, and the resultant force of the return spring 6 is opposite to the swinging direction of the first connecting rod 19 to reset the first connecting rod 19, so that the energy capturing system periodically swings around the first spherical pair 34.
The monitoring and control system comprises a first laser sensor 25, a second laser sensor 26, a third laser sensor 27, a wind speed sensor, a wind direction sensor, an illumination sensor and a microprocessor, wherein the first laser sensor 25, the second laser sensor 26 and the third laser sensor 27 are uniformly arranged on the resetting system mounting cylinder 5 and are positioned on the same horizontal plane, the first laser sensor 25, the second laser sensor 26 and the third laser sensor 27 respectively measure the distances between the first laser sensor 25, the second laser sensor 26 and the third laser sensor 27 and the first connecting rod 19, and the distances are converted into digital signals and then transmitted to the microprocessor; wind speed sensor and wind direction sensor arrange in the wind field, measure the wind speed and the wind direction that comes respectively to transmit to microprocessor after converting wind speed and wind direction into digital signal, a plurality of illumination sensors evenly arrange on installing support 3, the light intensity signal transmission that the illumination sensor detected is to microprocessor, microprocessor carries out the control signal of output after the analysis to the signal that receives to reset and supplementary start system, braking system, control resets and supplementary start system, braking system work.
As shown in fig. 7 and 8, the braking system comprises a mounting cylinder 9, a brake block 20, a hydraulic oil tank 28, a hydraulic pump 29, a hydraulic motor 30, a hydraulic actuator 31, a hydraulic pipeline 32 and a braking cylinder 33, the mounting cylinder 9 is fixedly arranged between the resetting system mounting cylinder 5 and the generator cylinder 13, the brake cylinder 33 is fixed on the first connecting rod 19, the mounting plate is sleeved on the outer side of the brake cylinder 33 and fixedly connected with the mounting cylinder 9, the mounting plate is provided with brake pads 20, a hydraulic oil tank 28, a hydraulic pump 29, a hydraulic motor 30, a hydraulic actuating element 31 and a hydraulic pipeline 32, the hydraulic oil tank 28 is connected with the hydraulic actuating element 31 through the hydraulic pipeline 32, the hydraulic pump 29 is arranged on the hydraulic pipeline 32, the hydraulic motor 30 is connected with the hydraulic pump 29 and a monitoring and control system, the hydraulic actuating element 31 is connected with a plurality of brake pads 20, and the brake pads 20 are distributed around the brake cylinder 33; the hydraulic motor 30 controls the hydraulic pump 29 to convert mechanical energy into kinetic energy of hydraulic oil, the kinetic energy is transmitted to the hydraulic actuator 31 through the hydraulic pipeline 32, and the brake pads 20 uniformly distributed under the driving of the hydraulic actuator 31 move towards the initial axis of the first connecting rod 19 at the same speed until the brake pads 20 contact with the brake cylinder 33, and the braking is carried out.
As shown in fig. 4-6, when the first link 19 swings around the first spherical pair 34 under the driving of the energy capturing system, the return spring 6 is repeatedly pulled and pressed, and the resultant force of the return spring is opposite to the swinging direction of the first link 19 to return the first link, thereby realizing the periodic swinging of the energy capturing system around the spherical pair 1.
The swing amplitude L of the first link rod 19 is more than or equal to Lmax(LmaxIs a bladeless wind driven generatorThe limit swing amplitude of the first connecting rod during normal operation, determined during design), the microprocessor controls the relays in the circuits of the first electromagnetic coil 22, the second electromagnetic coil 23 and the third electromagnetic coil 24 which are uniformly distributed on the reset system installation cylinder 5 to be closed, and adjusts the current I in the first electromagnetic coil 22, the second electromagnetic coil 23 and the third electromagnetic coil 24 by controlling the size of the resistors in the circuits1、I2、I3. The energized electromagnetic coil attracts the auxiliary return magnet 7 to generate a resultant force F (v) in a direction opposite to the swinging direction of the first link 19Rodthe-F plot was measured experimentally and stored in the microprocessor), i.e. assisted reset. And combined with the reset of the reset spring 6, so that when the swing amplitude L of the first connecting rod exceeds LmaxThe time capture energy system is reset quickly. When L is less than or equal to LmaxWhen the electromagnetic valve is in use, the microprocessor controls the relays in the circuits of the first electromagnetic coil 22, the second electromagnetic coil 23 and the third electromagnetic coil 24 to be disconnected, the auxiliary reset does not work, and only the reset spring 6 works in a reset mode.
The first laser sensor 25, the second laser sensor 26 and the third laser sensor 27 which are uniformly arranged on the resetting system mounting cylinder 5 and are positioned on the same horizontal plane respectively measure the distance L between the first connecting rod 19 and the first connecting rod1、L2、L3And converts it into a digital signal which is transmitted to the microprocessor via the bus, and the microprocessor calculates the amplitude of the first link 19 by the principle shown in fig. 4: using 3 laser sensors as circle centers and L1、L2、L3The radius is taken as a circle, the intersection point of 3 circles is the instantaneous position of the first connecting rod 19, the maximum distance between the instantaneous position and the initial position of the first connecting rod 19 in one vibration period is the amplitude L, and the maximum distance is obtained by
Determining the instantaneous pivoting speed v of the first linkRodΔ L and Δ t represent the amount of change in the amplitude L and time t, respectively.
A wind speed sensor and a wind direction sensor arranged in a wind field respectively measure the incoming wind speed vWind powerAnd the direction of the incoming wind, and converts the incoming wind into a digital signal to be transmitted to the microprocessor. When v isWind powerLess than minimum wind speed v of self-starting of bladeless wind generatorZheng minAnd is greater than the minimum starting wind speed vminDuring the process, the microprocessor controls the relay devices in the circuits of the first electromagnetic coil 22, the second electromagnetic coil 23 and the third electromagnetic coil 24 which are uniformly distributed on the reset system mounting cylinder to close the circuits, and adjusts the current I in the first electromagnetic coil 22, the second electromagnetic coil 23 and the third electromagnetic coil 24 by controlling the size of the resistor in the circuits1、I2、I3. The energized first electromagnetic coil 22, second electromagnetic coil 23, third electromagnetic coil 24 and auxiliary reset magnet 7 attract each other to generate an alternating resultant force F' (v) which is perpendicular to the wind speed direction of the wind fieldWind powerThe F' relationship was experimentally measured and stored in the microprocessor). I is1、I2、I3The calculation principle of (1) is as follows: the microprocessor is used for processing the wind speed v according to the incoming windWind powerAnd direction thereof according to vWind power-F' diagram determining the magnitude, direction and v of FWind powerVertically, F' is decomposed into F according to the method shown in FIG. 61＇、F2＇、F3Then calculating the formula by electromagnetic force to obtain I1、I2、I3. F' and the alternating acting force acted on the energy capturing system due to vortex-induced vibration act together to enable the bladeless wind driven generator to overcome the inherent damping of the system and to vibrate periodically. When the microprocessor monitors that the energy capturing system works normally through the first laser sensor 25, the second laser sensor 26 and the third laser sensor 27, relays in the circuits of the first electromagnetic coil 22, the second electromagnetic coil 23 and the third electromagnetic coil 24 are disconnected, and the auxiliary starting is completed.
The standby state of the brake system is shown in fig. 7, in which the brake disc 20 and the brake cylinder 33 are not in contact with each other, and the first link 19 can swing about the first spherical pair 34. When the brake system receives a brake command from the microprocessor, the hydraulic motor 30 is started, mechanical energy is converted into kinetic energy of hydraulic oil through the hydraulic pump 29 and is transmitted to the hydraulic actuator 31 through the hydraulic pipeline 32, and the four evenly distributed brake pads 20 move towards the initial axis of the first connecting rod 19 at the same speed under the driving of the hydraulic actuator 31 until the brake pads 20 are contacted with the brake cylinder 33. The first link 19 is now constrained to its original axis and cannot swing, as shown in figure 8. At the moment, the bladeless wind driven generator stops working, and a braking completion signal is fed back to the microprocessor through the bus. When the brake system receives a brake canceling instruction from the microprocessor, the hydraulic system releases pressure, the brake pad 20 returns to the initial position under the driving of the hydraulic execution element 31, the bladeless wind driven generator recovers to work, and meanwhile, a brake canceling completion signal is fed back to the microprocessor through a bus.
The first link 19 oscillates periodically around the spherical pair 1, and the oscillating direction thereof is random because it is determined by the wind direction. In order to avoid the phenomenon of ' rod jamming ' (the first link 19 is jammed between two brake pads ') when the brake pads 20 move towards the initial axis of the first link 19 during the braking operation, the invention designs the stepped brake pads as shown in fig. 9-11, which increases the braking range of the brake pads, so that the brake pads 20 cannot move into the gap between the brake pads to cause the phenomenon of ' rod jamming ' when moving at the initial position.
As shown in fig. 12 and 13, a monitoring and controlling method for a bladeless wind power generator includes the following steps:
the method comprises the following steps: the illumination sensor detects the illumination inside the energy capturing column shell 1 in real time and sends an illumination intensity signal to the microprocessor.
Step two: and judging whether the illumination intensity is less than or equal to the rated illumination intensity by the microprocessor, if so, normally operating the bladeless wind driven generator, and otherwise, entering the step three.
When the energy capturing column shell 1 has cracks, gaps and other abnormalities, light ray abnormalities occur inside the energy capturing column shell 1, and the corresponding light sensor acquires ambient light intensity and converts the ambient light intensity into a digital signal which is transmitted to the microprocessor through the bus.
Step three: the microprocessor transmits the result to the gateway through the bus, and the gateway transmits the result to the interaction interface through the wireless or optical fiber to remind an operator; and the microprocessor simultaneously sends a braking instruction to the braking system to control the bladeless wind driven generator to stop working, so that further expansion of damage is avoided.
Step four: when the fault is relieved, an operator can input a restart instruction through the interactive interface, the microprocessor judges whether the restart instruction is received, if so, the microprocessor starts a brake system to cancel the brake instruction, the bladeless wind power generator is restarted, and otherwise, the bladeless wind power generator still stops working.
In addition, when the bladeless wind driven generator needs routine maintenance or other operations needing to be stopped, an operator directly inputs a stop instruction through the interactive interface, the microprocessor sends a brake instruction to the brake system after receiving the stop instruction, and the brake pads 20 brake the first connecting rods 19, so that the operation of stopping the bladeless wind driven generator is realized.
Claims (10)
1. A monitoring and controlling device of a bladeless wind driven generator is characterized by comprising an energy capturing system, a resetting and auxiliary starting system, a braking system, an energy transmission system, an energy conversion system and a monitoring and controlling system;
the energy capturing system comprises an energy capturing column shell, an energy capturing column rod and a mounting bracket; the energy capturing column shell is fixed on the mounting support, the energy capturing column rod is fixedly connected with the energy capturing column mounting support, when wind bypasses the energy capturing column shell, alternately falling vortexes are formed on two sides of the rear surface of the energy capturing column shell, so that the energy capturing column shell generates vortex-induced vibration, and then the energy capturing column shell drives the energy capturing column rod to vibrate through the mounting support, so that the wind energy is converted into mechanical energy of an energy capturing system;
the lower end of the energy capturing pole is fixedly connected with a first connecting rod at the upper end, the lower end of the first connecting rod is connected with an energy transmission system, and the periodic vibration of the first connecting rod is converted into up-and-down reciprocating motion, so that the mechanical energy transmission is realized;
the lower end of the energy transmission system is connected with an energy conversion system, and the conversion from mechanical energy to electric energy is realized through the up-and-down reciprocating motion, so that the mechanical energy captured from wind energy by the energy capturing system is converted into electric energy;
the first connecting rod is provided with a resetting and auxiliary starting system and a braking system;
the monitoring and control system is used for detecting and controlling the working state of the whole device.
2. The monitoring and controlling device of the bladeless wind driven generator according to claim 1, wherein the energy transmission system comprises a spherical pair mounting bracket and a second connecting rod, the energy capturing pole transmits the vibration mechanical energy of the energy capturing system to the first connecting rod, the lower end of the first connecting rod is provided with two spherical surfaces, the first spherical surface is matched with the spherical pair mounting bracket to form a first spherical pair, and the first spherical pair plays a role of a supporting point and limits the horizontal movement of the first connecting rod while keeping the left-right periodic vibration of the first connecting rod; the second spherical surface of the first connecting rod is connected with the upper end of the second connecting rod to form a second spherical pair, and the lower end auxiliary surface of the second connecting rod is connected with the driving rod of the generator rotor to form a third spherical pair; under the combined action of the first spherical pair, the second spherical pair and the third spherical pair, the periodic vibration transmitted by the second connecting rod is converted into the vertical reciprocating motion of the generator rotor driving rod along the axis direction, so that the mechanical energy transmission is realized.
3. The monitoring and control device of the bladeless wind power generator according to claim 2, wherein the energy conversion system comprises a generator cylinder, a mounting base, a mounting disc, a generator rotor, a generator stator and a generator shell, the generator cylinder is fixed on the mounting base, the mounting disc is arranged on the inner wall of the lower part of the generator cylinder, the generator shell is fixedly arranged on the mounting disc, the generator stator is fixed on the generator shell, the generator rotor is positioned inside the generator stator, and the generator rotor driving rod and the generator rotor are fixedly connected; when the generator rotor driving rod drives the generator rotor to reciprocate up and down, the generator rotor and the generator stator mutually act to cut the magnetic induction lines and generate current, so that the conversion from mechanical energy to electric energy is realized, and the mechanical energy captured from wind energy by the energy capturing system is converted into electric energy.
4. The monitoring and controlling device of the bladeless wind driven generator according to claim 2, wherein the reset and auxiliary starting system comprises a reset system mounting cylinder, a reset spring mounting cylinder, a first electromagnetic coil, a second electromagnetic coil, a third electromagnetic coil and an auxiliary reset magnet, the reset spring mounting cylinder is sleeved and fixed on the first connecting rod, the auxiliary reset magnet is fixed on the reset spring mounting cylinder, the reset system mounting cylinder is sleeved outside the reset spring mounting cylinder, the lower end of the reset system mounting cylinder is fixedly connected with the generator cylinder body, the plurality of reset springs are uniformly arranged along the circumferential direction of the reset spring mounting cylinder, one end of each reset spring is fixedly connected with the reset system mounting cylinder, and the other end of each reset spring is fixedly connected with the reset spring mounting cylinder; the first electromagnetic coil, the second electromagnetic coil and the third electromagnetic coil which are positioned on the same horizontal plane are uniformly distributed on the inner wall of the reset system mounting cylinder, and relays in the circuits of the first electromagnetic coil, the second electromagnetic coil and the third electromagnetic coil are connected with a monitoring and control system; when the first connecting rod swings around the first spherical pair under the driving of the energy capturing system, the return spring is repeatedly pulled and pressed, and the resultant force of the return spring is opposite to the swinging direction of the first connecting rod to reset the first connecting rod, so that the energy capturing system periodically swings around the first spherical pair.
5. The monitoring and control device for a bladeless wind power generator according to claim 4, the brake system comprises an installation cylinder, a brake pad, a hydraulic oil tank, a hydraulic pump, a hydraulic motor, a hydraulic actuating element, a hydraulic pipeline and a brake cylinder, the mounting cylinder is fixedly arranged between the resetting system mounting cylinder and the generator cylinder body, the braking cylinder is fixed on the first connecting rod, the mounting plate is sleeved on the outer side of the braking cylinder and fixedly connected with the mounting cylinder, the mounting plate is provided with a braking piece, a hydraulic oil tank, a hydraulic pump, a hydraulic motor, a hydraulic actuating element and a hydraulic pipeline, the hydraulic oil tank is connected with the hydraulic actuating element through the hydraulic pipeline, the hydraulic pump is arranged on the hydraulic pipeline, the hydraulic motor is connected with the hydraulic pump and a monitoring and control system, the hydraulic actuating element is connected with a plurality of braking pieces, and the braking pieces are distributed around the braking cylinder; the hydraulic motor controls the hydraulic pump, mechanical energy is converted into kinetic energy of hydraulic oil, the kinetic energy is transmitted to the hydraulic actuating element through the hydraulic pipeline, the brake pads which are uniformly distributed under the driving of the hydraulic actuating element move to the initial axis of the first connecting rod at the same speed until the brake pads are contacted with the brake cylinder, and braking is carried out.
6. The monitoring and control device of the bladeless wind driven generator according to claim 5, wherein the monitoring and control system comprises a first laser sensor, a second laser sensor, a third laser sensor, a wind speed sensor, a wind direction sensor, an illumination sensor and a microprocessor, the first laser sensor, the second laser sensor and the third laser sensor are uniformly arranged on the resetting system mounting cylinder and are positioned on the same horizontal plane, and the first laser sensor, the second laser sensor and the third laser sensor respectively measure the distances between the first laser sensor, the second laser sensor and the third laser sensor and the first connecting rod, convert the distances into digital signals and transmit the digital signals to the microprocessor; the wind speed sensor and the wind direction sensor are arranged in a wind field, the wind speed and the wind direction are measured respectively, the wind speed and the wind direction are converted into digital signals and then transmitted to the microprocessor, the plurality of illumination sensors are uniformly arranged on the mounting support, light intensity signals detected by the illumination sensors are transmitted to the microprocessor, the microprocessor analyzes the received signals and then outputs control signals to the reset and auxiliary starting system and the braking system, and the reset and auxiliary starting system and the braking system are controlled to work.
7. The monitoring and control device for the bladeless wind driven generator according to claim 1, wherein a balancing weight is arranged at the upper end of the energy capturing pole, and a reinforcing rib is arranged on the shell of the energy capturing pole.
8. The monitoring and control device for a bladeless wind turbine according to claim 5, wherein the brake pads are stepped.
9. A monitoring and controlling method for a bladeless wind power generator according to the monitoring and controlling device for a bladeless wind power generator of claim 6, comprising the steps of:
the method comprises the following steps: the illumination sensor detects the illumination inside the energy capturing column shell in real time and sends an illumination intensity signal to the microprocessor;
step two: the microprocessor judges whether the illumination intensity is less than or equal to the rated illumination intensity, if so, the bladeless wind driven generator works normally, otherwise, the step three is carried out;
step three: the microprocessor transmits the result to the gateway through the bus, and the gateway transmits the result to the interaction interface through the wireless or optical fiber to remind an operator; the microprocessor simultaneously sends a braking instruction to a braking system to control the bladeless wind driven generator to stop working;
step four: and the microprocessor judges whether a restart starting instruction is received, if so, a braking canceling instruction is started to the braking system, the bladeless wind power generator is restarted, and otherwise, the bladeless wind power generator still stops working.
10. The monitoring and control method for the bladeless wind power generator according to claim 9, further comprising: when the bladeless wind driven generator needs conventional maintenance or other needs to be stopped, an operator directly inputs a stop instruction through the interactive interface, the microprocessor sends a brake instruction to the brake system after receiving the stop instruction, and the brake disc brakes the first connecting rod, so that the bladeless wind driven generator is stopped.
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