CN102913393B - Compressed air turbine wind power generator - Google Patents

Abstract

The invention discloses a compressed air turbine wind driven generator which comprises a natural wind air compressor, a compressed air storage tank, a compressed air conduit and a turbine generator. The invention does not need to directly drive the generator by the fan blade, and the rotating part of the fan blade is not attached with structures such as electric wires, sliding brushes and the like, thereby having the advantages of safe working state, stable power generation, difficult damage of a turbine and the like, and being capable of continuously generating power even under the condition of no natural wind for a while.

Description

compressed gas turbine wind turbine

technical field

The present invention relates to the technical field of wind power generators, more specifically to turbine wind power generators.

Background technique

Turbine wind generator is a device that impacts the flowing air onto the rotating impeller (turbine) to convert mechanical energy into electrical energy. The blades of the turbine are generally helical, with one side of the blade slightly curved, while the other side is relatively flat. As the wind passes along the downwind blade arc, it must pick up speed to reach the blade tip in time to catch up with the wind passing on the flatter side of the blade upwind (that is, facing the direction the wind blows from). As the faster-moving air will rise in the atmosphere, a low-pressure cluster will appear on the arc of the downwind, and the low-pressure area will attract the blades in the direction of the downwind. This is called the "lifting" effect. On the upwind side of the blade, the wind speed is slower, creating areas of higher pressure that push against the blade, slowing it down. When such a helical turbine is properly designed, it will enable the turbine to capture more wind and generate more electricity.

With the gradual development of coal, oil and other resources, the current energy shortage has begun, and people have to use wind energy and solar energy as new energy sources. Therefore, wind power generators have begun to be developed in large quantities, especially for turbine wind power generators. The research has also begun to go deeper. , there are many reports in the public literature, and we also retrieved some related content from Chinese patents, such as:

Chinese patent: Name: Vertical axis three-dimensional wind power generator Application (patent) number: CN02122378.5, publication (announcement) number: CN1399068 Publication (announcement) date: 2003.02.26, applicant (patent right) person: Zhang Songshan Address: Gansu Inventor (Designer) of Team Six of Tianqiao Village, Erba Township, Wuwei City, Province: Zhang Songshan Abstract: A vertical-axis three-dimensional wind turbine composed of wind blades and a generator that is not affected by changes in wind direction and can greatly increase the output power of a single machine. The shaft of the blades is installed perpendicular to the ground, and the blades are distributed in a 120° "Y" shape or 2-6 petals. Each group of blades is composed of multiple pocket blades in sequence, no matter which direction the wind blows from , there is always a group of wind blades receiving the wind, and the corresponding other blades exhaust the wind, the blades rotate rapidly in one direction to do work, the output power of the single machine is greatly improved, which overcomes the shortcomings of the traditional turbine wind generator, and can be increased according to the required power Or reduce the quantity of the pocket leaves, be flexible and maneuverable, and the land area used for building a power plant is small. Sovereignty items: 1. A vertical-shaft three-dimensional wind-driven generator, which is composed of wind blades, a generator, and a bracket. It is characterized in that: on the rotating shaft of the generator or the fan blade installed perpendicular to the ground, there are pocket-type wind blades arranged in a "Y" shape or 2-6 lobe-shaped distribution at 120° to each other, and the wind blades are superimposed and arranged by the pocket-type wind blades made.

Chinese patent: Name: Turbine wind power generator, application (patent) number: CN200610118644, 6 publication (announcement) number: CN101191458 publication (announcement) date: 2008.06.04, applicant (patent right) person: Shanghai Jiuneng Energy Technology Development Co., Ltd. Address: No. 8743, Hunan Highway, Nanhui District, Shanghai, Inventor (Designer): Li Zhaoming Abstract: A turbine wind generator, including a generator and wind blades, the wind blades are connected to the turbine, and the turbine is connected to the generator. After using the turbocharger, the power generation efficiency is greatly improved, the wind energy is effectively used, and resources are saved. Sovereignty items: 1. The turbine wind generator of the present invention includes a structure including a generator and wind blades, which is characterized in that: the wind blades are connected to the turbine, and the turbine is connected to the generator.

Chinese Patent: Title: Maglev Vertical Turbine Wind Power Generator Application (Patent) Number: CN200910025157, 9 Application Date: 2009, 02, 18 Publication (Announcement) Number: CN101532471 Publication (Announcement) Date: 2009, 09, 16 Application (Patent Right) ) Person: Nantong University Address: No. 9, Sieyuan Road, Nantong City, Jiangsu Province Inventor (designer): Wu Guoqing; Zhou Jingling; Liao Ping; Mao Jingfeng; Zhu Weinan; Gu Yunhua; Shi Zhenquan; Cao Yang; Zhang Xudong; Zhang Yumei; Chen Xinghua For turbine wind turbines, the wind guide channel of the turbine forms an included angle of 35-40° with the axis parallel to the wind direction; the axial support structure is composed of the main support part composed of magnetic bearings and the auxiliary support part composed of mechanical rollers; The mechanical rollers are symmetrically arranged and assembled in a circular shape on the stage of the tower base; the magnetic bearing includes an active suction type electromagnet coil, and the active suction type electromagnet coil is arranged above and below the main working shaft convex plate, corresponding to It is a working unit, and all working units are also arranged in equal parts according to circular symmetry, and are arranged concentrically with the mechanical roller support on the outside of the mechanical roller, and each electromagnet unit ensures that the magnetic poles are opposite; the turbine is a vertical turbine structure. The invention has a reasonable structure, can obtain high power generation efficiency under low wind speed conditions, and has the advantages of low starting wind speed, high wind energy utilization rate, simple structure and convenient maintenance. Sovereignty items: 1. A maglev vertical turbine wind power generating set, including blades, a turbine supported on a tower bracket, and an empennage. The blades are connected to the main working shaft, and the main working shaft is provided with an axial support structure and a radial support structure. The main working shaft is connected with the generator, and the characteristic is that: the wind guide channel of the turbine forms an angle of 35-40° with the axis parallel to the wind direction; the axial support structure consists of the main support part composed of magnetic bearings and the mechanical The auxiliary support part composed of rollers; the mechanical rollers are symmetrically arranged and assembled on the stage of the tower base in a circular shape; the magnetic bearing includes active suction type electromagnet coils, and the active suction type electromagnet coils are arranged up and down The upper and lower sides of the main working shaft convex plate correspond to a working unit. All the working units are also arranged symmetrically and equally in circles, and are arranged concentrically with the mechanical roller support on the outer side of the mechanical roller. Each electromagnet unit ensures The magnetic poles are opposite.

Chinese Patent: Name: Turbine Wind Power Generator, Application (Patent) Number: CN200910159069.8 Application Date: 2009.07.28, Publication (Announcement) Number: CN101696674A Publication (Announcement) Date: 2010, 04, 21, Application (Patent Right) Person: Liu Shiliang, Address: Retirement Office, Mailbox 203, Mianyang City, Sichuan Province, Inventor (Designer): Liu Shiliang, Abstract: A turbine wind generator, the spiral vortex of the turbine windmill is uniformly fixed in the middle of a bicycle wire wheel, It seems that three propellers have become dozens of blade propellers. It is easy to make the windmill up to hundreds of meters to directly increase the windward area. The windmill can be equipped with a funnel-shaped wind jacket, and its tuyere can be made into round, square, rectangular and other shapes indirectly. Increase the windward area, the combination of the two can make the wind power generator reach 100,000 kilowatts, and the transmission device can be set to transmit the power to the ground workshop, so that the generator can be protected from the erosion of wind, sand, humidity and salt spray. The whole machine can resist typhoon. If the generator uses "Bagua unit", no matter the breeze or typhoon, its speed, voltage and frequency are always stable and can be directly connected to the grid. Sovereign item: a wind turbine generator, including a bracket, a turntable, a generator, a horizontal transmission shaft, and a turbine windmill sleeved on the horizontal transmission shaft, characterized in that the turbine windmill of the wind turbine generator includes a hub, an outer rim A wire spoke is connected between the hub and the outer rim, and there is a spiral vortex in the middle of the wire spoke between the hub and the outer rim.

The turbine wind power generator disclosed in the above-mentioned documents has some improved fan blade shapes, such as designing it as a pocket fan blade, changing the wind guide channel of the turbine, changing three blades into dozens of blade propellers, etc., which can further increase the blade speed. The utilization rate of wind energy has also increased accordingly, but some structures are unreasonable and cannot continuously generate electricity, and some are not high enough in terms of efficiency.

Contents of the invention

The purpose of the present invention is to provide a compressed gas turbine wind generator capable of overcoming the shortcomings of the prior art, capable of utilizing wind from various directions to a greater extent, safe in working condition, capable of continuous power generation and improved power generation efficiency.

The compressed air turbine wind power generator of the present invention is composed of a natural wind air compressor, a compressed air storage tank, a compressed air conduit and a turbine generator. The storage tank drives the turbine blades of the turbine generator through the compressed air duct to make the generator generate electricity.

The above-mentioned compressed gas turbine wind power generator is characterized in that the structure of the natural wind air compressor includes fan blades, an air compressor, a compressed air storage tank and an output pipeline, wherein the air compressor is located in the compressed air storage tank. On the top or side of the tank, the fan blades are installed on the transmission shaft and fixed on the compressed air storage tank through bearings. One end of the transmission shaft is connected to the working shaft of the air compressor. When the natural wind blows the fan blades to rotate, the air compressor is driven by the transmission shaft. The machine works to generate compressed air, which is stored in the compressed air storage tank, and then the output pipeline leads to the compressed air duct of the turbine generator.

In order to ensure constant compressed air in the compressed air storage tank, a check valve is installed on the pipeline from the outlet of the air compressor to the compressed air storage tank, and a safety valve is installed on the compressed air storage tank to prevent overpressure accidents; A control valve is also installed on the air duct to provide a stable air source for the turbine generator.

Described turbine generator comprises turbine generator, generator shaft and motor lead-out wire, and turbine is made of sealing cover shell, transmission shell and the turbine fan blade that is installed on the turbine transmission shell, and inner bearing is installed in turbine transmission shell, and generator One end of the main shaft passes through the inner bearing of the turbine transmission casing and is fixed on the outer casing. The outer casing of the turbine is a closed casing with a compressed air conduit inlet on the side wall. When the compressed air output by the natural wind air compressor passes through the compressed air conduit When the tangent wire enters the casing, the turbine blades are driven to rotate, and at the same time, the turbine generator is driven to generate magnetic induction current to generate electricity.

The above-mentioned compressed air conduits are distributed on both sides of the turbine transmission shaft in a symmetrical structure.

The above-mentioned compressed gas turbine wind generator can be made into an integrated (connected) structure, and can also be made into a split structure. The purpose is to enter the compressed air output by the natural wind air compressor into the turbine generator.

The generators mentioned above can adopt common excitation generators or variable frequency generators with permanent magnets, so that the power generation efficiency can be greatly improved.

The above-mentioned natural wind air compressor compressed air output and turbine generator valve control can also adopt a fully automatic control system, that is, the entire system of air compressor operation, compressed air storage tank pressure, and turbine generator input is comprehensively controlled.

The pressure of the air compressor mentioned above, the volume of the compressed air storage tank, the number, cross-sectional size and length of the fan blades, the number and size of the turbine blades of the turbo generator, and the size of the generator can be designed according to specific conditions.

Compared with the prior art, the present invention's outstanding substantive features and remarkable progress are:

1) The wind blades driven by the natural wind rotate together with the compressor on the same drive shaft, so that the inhaled natural wind can increase the wind pressure and wind speed, and gather into a strong airflow (jet flow), which is composed of compressed air The duct is divided into two strands that are axisymmetric at an angle of 180° and introduced from the tangential direction into the closed circular shell opened at the bottom, so that the fan blades on the built-in turbine are forced to move forward by the jet thrust of the airflow from the left and right directions at the same time, and the airflow finally It is discharged from the bottom under the guidance of the fan blades, and the exhaust direction is changed. In addition, because the tolerance between the shell and the built-in fan blades is relatively close, the gap is small, below 0.5mm, and the thrust of the airflow is mostly concentrated on the fan blades. As a result, the torque of the turbine is greatly increased, and the load has a greater driving force, thereby alleviating the unstable factors of natural wind energy, and it can continue to generate electricity even when there is no natural wind for the time being.

2), the natural wind air compressor of the present invention includes fan blades, compressors, transmission shafts, bearings, wind vanes, compressed air ducts and semi-closed casings, etc. The corresponding displacement of the push action makes the fan blades face the wind source, so that the wind from east, west, north, south, and north can drive the operation of the fan blades regardless of the natural wind, realizing a full range of universal functions. Since the rotating part has no With wires, sliding brushes and other structures, it is safer and more reliable.

3) The turbine in the semi-enclosed casing includes fan blades, cylinders, and the generator are fixed by bearings placed on the main shaft. When the turbine is running inside, it cannot be observed outside the casing. It is waterproof, windproof, and corrosion-resistant. It is well protected and durable, which also reduces maintenance costs accordingly.

4), the turbine only needs to change the volume of the blower, the number of internal blades, the change of the blade area, the width of the upper blade of the turbine and the change of the deflection angle are decisive for the rated power output of the turbine. Any data change will cause the machine to change. Therefore, a series of products can be designed to produce a series of independently powered generator sets with different rated power.

5), the present invention changes the exhaust direction of the engine, and the air outlet is a decisive link. Through the symmetrical input of the energy integration jet of afterburning, boosting and speeding up, the diffusion deflection is changed to change the driving angle of the wind blade on the wind impeller , has the characteristics of simplicity, light weight, and low risk. Developed countries give priority to developing it as an important technology. Foreign countries especially use this principle to change the direction of engine exhaust, so that the technology of changing airflow guidance is first used on fighter jet engines. The large range shows that the aircraft can greatly improve its super maneuverability, short take-off and landing and low detectability, and significantly improve the combat effectiveness and survivability of fighter jets. The F-22 of the United States, the T-50 of Russia, And China's domestic fourth generation of stable fighters has been developed and applied to change the airflow guide technology (but not identical with the structure of the present invention).

Description of drawings

Fig. 1 is a structural schematic diagram of a compressed air turbine wind generator with an integrated structure according to the present invention.

Fig. 2 is a structural schematic diagram of a compressed gas turbine wind generator with split structure according to the present invention.

Serial number and part name in the figure:

1-fan blade, 2-transmission shaft, 3-bearing, 4-air compressor, 5-wind vane, 6-automatic safety valve, 7-compressed air inlet, 8-compressed air storage tank, 9-control intake valve , 10-compressed air duct, 11-sealed cover shell, 12-turbine blade, 13-air outlet, 14-turbine generator, 15-turbine transmission shell, 16-generator main shaft, 17-control intake valve, 18- Inner bearing, 19-motor lead wire, 20-hollow shaft.

Detailed ways

Example 1

As shown in the figure, the compressed air turbine wind power generator with an integrated structure of the present invention is composed of a natural wind air compressor, a compressed air storage tank, a compressed air duct, and a turbine generator. The machine gets the compressed air, sends it to the compressed air storage tank, and then drives the turbine blades of the turbine generator through the compressed air duct to make the generator generate electricity.

In Fig. 1, the structure of the natural wind air compressor includes fan blade 1, air compressor 4, compressed air storage tank 8 and compressed air conduit 10, wherein air compressor 4 is arranged above the compressed air storage tank 8, and fan blade 1 is installed On the transmission shaft 2 and installed on the compressed air storage tank 8 through the bearing 3, one end of the transmission shaft 2 is connected to the working shaft of the air compressor 4, when the natural wind blows the blades to rotate, the transmission shaft 2 drives the air compressor 4 Work, generate compressed air, store it in the compressed air storage tank 8, the compressed air storage tank 8 is equipped with an automatic safety valve 6, and then the compressed air conduit 10 passes through the control intake valves 9 and 17 to the turbine generator to push the turbine blades 12.

Duct type turbine generator comprises turbine generator 14, generator shaft 16 and motor lead-out wire 19, and turbine is made of sealing cover shell 11, transmission shell 15 and the turbine vane 12 that is installed on the transmission shell 15, and turbine drive shell is installed with Inner bearing 18, one end of the generator main shaft 16 passes through the inner bearing 18 of the turbine drive housing 15 and is fixed on the sealing cover shell 11. The sealing cover shell 11 of the turbine is an airtight cover with compressed air ducts 10 on the side wall At the entrance, when the compressed air output by the natural wind air compressor enters the casing of the sealed cover shell 11 tangentially from the conduit, the turbine blades 12 are driven to rotate, and at the same time, the turbine generator 14 is driven to generate magnetic induction current to generate electricity.

Example 2

The compressed air turbine wind generator with split structure of the present invention is composed of a natural wind air compressor and a turbine generator, as shown in Figure 2. The natural wind air compressor is driven by the rotation of the fan blades to provide compressed air through the pipeline. until the turbine generator rotates; the turbine generator is a device that drives the turbine blades through the compressed air conduit to drive the compressed air output by the compressor driven by the rotation of the blades to generate electricity for the generator.

The structure of the natural wind air compressor includes a fan blade 1, an air compressor 4, a compressed air storage tank 8 and a compressed air conduit 10, wherein the air compressor 4 is arranged above the compressed air storage tank 8, and the fan blade 1 is installed on the transmission shaft 2 and installed on the compressed air storage tank 8 through the bearing 3. One end of the drive shaft 2 is connected to the working shaft of the air compressor 4. When the natural wind blows the fan blades to rotate, the drive shaft 2 drives the air compressor 4 to work, generating compression The air is stored in the compressed air storage tank 8, the compressed air storage tank 8 is equipped with an automatic safety valve 6, and then output from the hole of the hollow shaft 20, passes through the control intake valve 9 to the compressed air conduit 10, and leads to the turbine generator to drive the turbine wind blade12.

Duct type turbine generator comprises turbine generator 14, generator shaft 16 and motor lead-out wire 19, and turbine is made of sealing cover shell 11, transmission shell 15 and the turbine vane 12 that is installed on the transmission shell 15, and turbine drive shell is installed with Inner bearing 18, one end of the generator main shaft 16 passes through the inner bearing 18 of the turbine drive housing 15 and is fixed on the sealing cover shell 11. The sealing cover shell 11 of the turbine is an airtight cover with compressed air ducts 10 on the side wall At the entrance, when the compressed air output by the natural wind air compressor enters the casing of the sealed cover shell 11 tangentially from the compressed air duct, the turbine blades 12 are driven to rotate, and at the same time, the turbine generator 14 is driven to generate magnetic induction current to generate electricity.

Application Example 1

Three-leaf blades with a length of 100 centimeters are used to drive and connect the outer diameter of 35 centimeters on the same axis. A compressor with three blades and an air outlet diameter of 8 centimeters is used to eject airflow from compressed air ducts that are symmetrical to each other at an angle of 180°. To a semi-closed cylindrical shell with a diameter of 35 cm and a length of 40 cm, the shell is equipped with a turbine cylinder with a diameter of 15 cm and a length of 40 cm, and 10 fan-shaped blades with an area of 20*40 cm are evenly distributed on the periphery, and the blades are arranged in vertical rows. In the shape of a squirrel cage, the tolerance gap between the housing and the fan blades is less than 0.5 cm. For this reason, the airflow can only directly drive the fan blades to rotate and then discharge from the bottom. The inner cylinder of the turbine is equipped with a full magnetic levitation frequency conversion generator. The output power of the motor is 300W. 12V, 24V single-phase AC independent power supply, converted into DC by converter for charging and storage backup,

Application Example 2

Three-leaf blades with a length of 120 cm are used to drive and connect the coaxial 40 cm outer diameter, equipped with a compressor with 6 blades and an air outlet diameter of 10 cm, which is ejected by compressed air ducts with axisymmetric angles of 180° to each other The air flows to a semi-closed cylindrical shell with a diameter of 40 cm and a length of 40 cm. The shell is equipped with a turbine cylinder with a diameter of 24 cm and a length of 40 cm. There are 6 fan-shaped blades with an area of 25*40 cm evenly distributed on the periphery. The blades are spiral Assembled in a column, the tolerance gap between the shell and the fan blade is less than 0.5 cm, and the compressed air storage tank is divided into two airflows at an angle of 180° to each other, which can only directly drive the fan blade to rotate and then discharge from the bottom. The inner cylinder of the turbine is placed Full magnetic levitation frequency conversion generator, motor output power 1000W, voltage 12V, 24V single-phase AC independent power supply, converted into DC by converter for charging and storage backup.

Application Example Three

The six-bladed blades with a length of 120 cm are used to push and connect the coaxial 45 cm outer diameter, equipped with a compressor with 6 blades and an air outlet diameter of 12 cm, which is ejected by compressed air ducts with axisymmetric angles of 180° to each other The air flows to a semi-closed cylindrical shell with a diameter of 45 cm and a length of 45 cm. The shell is equipped with a turbine cylinder with a diameter of 24 cm and a length of 45 cm. There are 6 fan-shaped blades with an area of 30*45 cm evenly distributed on the periphery. The blades are spiral Assembled in a row, the dynamic fit tolerance gap between the shell and the fan blades is less than 0.5 cm. Therefore, when the left and right axially symmetrical airflows are introduced, they can only directly drive the fan blades to rotate and then discharge from the bottom. On the other hand, to reduce the running time Frictional resistance and increase the driving force, install two pieces of iron discs processed into an outer diameter of 15 cm and a thickness of 0.5 cm on the linkage shaft between the outer fan blade and the generator. The other piece is fixed on the transmission shaft and rotates with the shaft. On the two pieces of iron discs, the S and N of a single permanent magnet are alternately and evenly pasted with iron parts, and the number of S and N pieces is equal. The polarity of every two permanent magnets is the same as S pole or N pole, and the polarity of the two adjacent permanent magnets is opposite to that of the adjacent two pieces. Paste the full iron block evenly. Note that the magnetic values of S and N must also be equal. This set of devices Constitutes the functions of full magnetic levitation and magnetic push-pull, so as to overcome the frictional resistance during operation and increase the torque thrust. The inner cylinder of the turbine is equipped with a full magnetic levitation variable frequency generator. The output power of the motor is 1500-2000W, and the voltage is 12V, 24V single-phase AC independent power supply , which is converted into direct current by a converter for charging and storage.

Claims (3)

1. a pressurized gas wind turbine generator, it is characterized in that: it is made up of natural wind air compressor, compressed air reservoir, air-pressure duct and turbogenerator, natural wind air compressor rotarily drives compressor by fan blade and obtains pressurized air, deliver to compressed air reservoir, then drive the turbine fan blade of turbogenerator to make electrical power generators by air-pressure duct;

The structure of described natural wind air compressor comprises fan blade, air compressor, compressed air reservoir and output pipeline, wherein air compressor is located at above compressed air reservoir or side, fan blade is arranged on transmission shaft, and being fixed on compressed air reservoir by bearing, transmission shaft one end connects air compressor working shaft, rotates when natural wind blows fan blade, air compressor work is driven by transmission shaft, produce pressurized air, be stored in compressed air reservoir, then lead to turbogenerator by air-pressure duct;

Full magnetic suspension frequency conversion generator settled by turbo machine inner cylinder, converts direct current do charging accumulate to for subsequent use by transducer;

The Pipe installing that air compressor exports to compressed air reservoir has check valve, and compressed air reservoir is provided with safety valve, and the air-pressure duct exported is provided with control valve.

Described turbogenerator comprises turbo machine, generator shaft and extraction wire, turbo machine is made up of shell, drive shell and the turbine fan blade be arranged on turbine drive shell, turbine drive shell is provided with inner bearing, one end of generator shaft is through being fixed on shell after the inner bearing of turbine drive shell, the shell of turbo machine is an airtight cover body, sidewall has air-pressure duct entrance;

Air-pressure duct is the both sides that symplex structure is distributed in turbine drive axle, and pressurized air enters in case body from air-pressure duct tangent line.

2. pressurized gas wind turbine generator according to claim 1, is characterized in that: described being made of one of pressurized gas wind turbine generator structure, or makes split-type structural.

3. pressurized gas wind turbine generator according to claim 1, is characterized in that: natural wind air compressor pressurized air exports and the Valve controlling of turbogenerator adopts manual control or full-automatic control system.