CN111207040A

CN111207040A - Device and method for improving efficiency of wind driven generator

Info

Publication number: CN111207040A
Application number: CN202010158640.0A
Authority: CN
Inventors: 宁生奎; 徐友浒; 张本卫; 邓虎; 李明; 王隆华; 李欢欢; 朱小卫; 鲁维明
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-05-29

Abstract

The invention provides a device and a method for improving the efficiency of a wind driven generator, which comprises a speed-multiplying wind driven generator, wherein the speed-multiplying wind driven generator comprises two groups of wind turbines, magnetic induction coils, magnetic poles, main shafts, sleeve bearings, inner sleeve extending parts and electric power output wires, the two groups of wind turbines are respectively arranged at the upper end and the lower end of the same main shaft, the magnetic induction coils are fixed on one wind turbine, the magnetic poles are fixed on the other wind turbine, and collecting rings and carbon brushes are arranged on the sleeve bearings and the inner sleeve extending parts and are arranged on the inner sides of the magnetic induction coils. By additionally arranging the air deflector and the wind rudder on the vertical axis wind turbine, the reverse stress of the wind turbine can be greatly reduced, the efficiency of the wind power generation device is improved, the wind turbine is prevented from stalling, and the construction of a matrix type wind power generation matrix group is facilitated; the rotor and the stator of the generator rotate relatively, which is equivalent to reducing the cut-in wind speed value of the wind turbine, and the speed change device can be reduced or cancelled to enable the generator to output more electric energy.

Description

Device and method for improving efficiency of wind driven generator

Technical Field

The invention belongs to the technical field of wind power generation, and particularly relates to a device and a method for improving the efficiency of a wind driven generator.

Background

The wind power generator is an electric device which converts wind energy into mechanical work, and finally outputs alternating current by driving a stator and a rotor to rotate. The wind-driven generator generally comprises a blade, a generator, a direction regulator, a tower, a speed-limiting safety mechanism, an energy storage device and other components. The wind driven generator has simple working principle, the blades rotate under the action of wind force, the kinetic energy of the wind is converted into mechanical energy of a wind wheel shaft, and the generator is driven by the wind wheel shaft to rotate and transmit under the action of the mechanical energy to output electric energy.

If the application number is: CN201720752238.9 discloses a blade for wind driven generator, which comprises a blade main body, a gravity adjusting block and an adjusting piece; the blade main body is provided with a head end and a tail end, the head end is arranged to be mounted on a rotating shaft of the wind driven generator, an adjusting elongated slot is arranged between the head end and the tail end, the adjusting elongated slot is provided with a first end and a second end, the first end is adjacent to the head end, and the second end is adjacent to the tail end; the gravity adjusting block is arranged in the adjusting long groove and can move between the first end and the second end; the adjusting piece is arranged in the adjusting long groove, the adjusting piece is provided with an abutting part abutting against the second end, and a pushing part is arranged to push the gravity adjusting block to be positioned at the first end, and the gravity adjusting block can overcome the pushing force by the centrifugal force generated by the rotation of the rotating shaft and move towards the second end. The utility model relates to a blade for aerogenerator can adjust the inertia of blade main part under different rotational speeds when the blade main part is rotatory along with the pivot to promote aerogenerator output efficiency.

Based on the above, the efficiency of the wind power generator still needs to be improved, and the output of practical electric energy of a common wind power generator is limited due to the limitation of cut-in wind speed in a lower wind speed period.

Disclosure of Invention

In order to solve the above technical problems, the present invention provides a device and a method for improving the efficiency of a wind turbine, so as to solve the problems that the efficiency of the wind turbine needs to be improved, and the output of practical electric energy of a general wind turbine is limited due to cut-in wind speed in a lower wind speed period.

The invention aims and effects of the device and the method for improving the efficiency of the wind driven generator, and the device and the method are achieved by the following specific technical means:

the device for improving the efficiency of the wind driven generator comprises a speed-multiplying wind driven generator, wherein the speed-multiplying wind driven generator comprises two groups of wind turbines, magnetic induction coils, magnetic poles, main shafts, sleeve bearings, inner sleeve extending parts and power output wires, the two groups of wind turbines are respectively arranged at the upper end and the lower end of the same main shaft, the magnetic induction coils are fixed on one wind turbine, the magnetic poles are fixed on the other wind turbine, collecting rings and carbon brushes are arranged on the sleeve bearings and the inner sleeve extending parts and are arranged on the inner sides of the magnetic induction coils, and the power output wires are connected to the bottom of the wind turbines.

Furthermore, a wind wheel is arranged on the wind turbine and comprises blades, an inner cylinder, an upper cover plate, a lower cover plate, a sleeve bearing and a pressure bearing, the sleeve bearing is embedded at the upper end of the inner side of the inner cylinder, the pressure bearing is embedded at the lower end of the inner side of the inner cylinder, the blades are fixedly connected with the inner cylinder, the upper cover plate and the lower cover plate respectively, the upper cover plate and the lower cover plate are arranged on the upper side of the sleeve bearing and the lower side of the pressure bearing respectively, and the main shaft penetrates through the sleeve bearing and the pressure bearing to form the wind turbine.

Furthermore, the wind turbine also comprises a wind direction rudder, an air deflector bearing and a circular member, wherein the wind direction rudder is provided with two groups which are respectively arranged at the outer side of the air deflector, the wind direction rudder is also arranged on the air deflector through the circular member, and the air deflector is rotatably sleeved on the main shaft through the air deflector bearing and is arranged at the outer side of the blade.

Furthermore, the wind rudder is of a triangular structure and is composed of metal sheets, elastic sheets and a connecting shaft, two groups of metal sheets are arranged, one group of metal sheets are of a V-shaped structure and are fixedly connected to the circular member, the other group of metal sheets are rotatably connected to the circular member through the connecting shaft, and the elastic sheets are connected between the two groups of metal sheets.

Furthermore, the air deflector occupies one fourth of the area of the outer barrel of the wind turbine.

Further, in the step 1), two wind turbines with the same output power are arranged on a main shaft, a common generator is arranged between the two wind turbines, a stator is fixed on one wind turbine, and the other wind turbine is fixed on a rotor to form a wind turbine generator; step 2), fixing the magnetic pole of the disc type generator on one wind turbine, fixing the magnetic induction coil on the other wind turbine, and then installing the two wind turbines on a main shaft to form a disc type speed-multiplying wind driven generator; and 3) installing an air deflector and an air deflector on the vertical axis wind turbine, enabling the air deflector and the air deflector to be vertical and connected into a whole through the main shaft, and enabling the air deflector to rotate around the main shaft under the action of the air deflector.

Further, in the step 2), two magnetic poles of the disk generator are respectively fixed on one surface of each of the two wind turbines, and an induction coil of the disk generator is installed between the two magnetic poles and fixed on the main shaft, so that the multi-speed wind driven generator is formed.

The invention at least comprises the following beneficial effects:

according to the invention, the wind deflector and the wind rudder are additionally arranged on the vertical axis wind turbine, so that the reverse stress of the wind turbine can be greatly reduced, the efficiency of the wind power generation device is improved, the wind turbine is prevented from stalling, and the construction of a matrix type wind power generation group is facilitated; the rotor and the stator of the generator rotate relatively, which is equivalent to reducing the cut-in wind speed value of the wind turbine, and the speed change device can be reduced or cancelled to enable the generator to output more electric energy; the wind power generation device and the generator assembly method can be applied to the construction of wind power stations, and can also be applied to other energy sources and special power generation equipment.

Drawings

FIG. 1 is a schematic side sectional view of a vertical axis wind turbine according to the present invention.

Fig. 2 is a schematic top view of the rotation direction of the upper fan in fig. 1 according to the present invention.

Fig. 3 is a schematic top view of the rotation direction of the lower fan in fig. 2 according to the present invention.

Fig. 4 is a schematic side view of the present invention in fig. 1 after further modification.

Fig. 5 is a top plan view of the structure of fig. 4 in accordance with the present invention.

Fig. 6 is a schematic view illustrating the air deflector of fig. 5 rotated to the other side according to the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a double speed wind power generator; 2. a wind turbine; 201. a wind wheel; 2011. a blade; 2012. an inner cylinder; 2013. an upper cover plate; 2014. a lower cover plate; 2015. a sleeve bearing; 2016. a pressure bearing; 202. a wind rudder; 2021. a metal foil; 2022. an elastic sheet; 2023. a connecting shaft; 203. an air deflector; 2031. an air deflector bearing; 204. a circular member; 3. a magnetic induction coil; 4. a magnetic pole; 5. a main shaft; 6. a sleeve bearing and an inner sleeve extension part; 7. and a power output lead.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 6:

the invention provides a device method for improving the efficiency of a wind driven generator, which comprises a speed-multiplying wind driven generator 1, wherein the speed-multiplying wind driven generator 1 comprises wind turbines 2, magnetic induction coils 3, magnetic poles 4, a main shaft 5, a sleeve bearing, an inner sleeve extending part 6 and a power output lead 7, the wind turbines 2 are provided with two groups and are respectively arranged at the upper end and the lower end of the same main shaft 5, the magnetic induction coils 3 are fixed on one wind turbine 2, the magnetic poles 4 are fixed on the other wind turbine 2, current collecting rings and carbon brushes are arranged on the sleeve bearing and the inner sleeve extending part 6 and are arranged on the inner side of the magnetic induction coils 3, and the power output lead 7 is connected to the bottom of the wind.

Wherein, be equipped with wind wheel 201 on wind energy conversion system 2, and wind wheel 201 includes blade 2011, inner cylinder 2012, upper cover plate 2013, lower cover plate 2014, sleeve bearing 2015 and pressure bearing 2016, sleeve bearing 2015 inlays the inboard upper end at inner cylinder 2012, and the inboard lower extreme of inner cylinder 2012 is inlayed to pressure bearing 2016, blade 2011 respectively with inner cylinder 2012, upper cover plate 2013 and lower cover plate 2014 fixed connection, and upper cover plate 2013, lower cover plate 2014 establish respectively in the upside of sleeve bearing 2015, the downside of pressure bearing 2016, main shaft 5 runs through sleeve bearing 2015 and pressure bearing 2016 constitution wind energy conversion system 2.

The wind turbine 2 further comprises a wind rudder 202, an air deflector 203, an air deflector bearing 2031 and a circular member 204, wherein the wind rudder 202 is provided with two groups which are respectively arranged on the outer side of the air deflector 203, the wind rudder 202 is further mounted on the air deflector 203 through the circular member 204, and the air deflector 203 is rotatably sleeved on the main shaft 5 through the air deflector bearing 2031 and is arranged on the outer side of the blade 2011.

The wind rudder 202 has a triangular structure and is composed of two groups of metal sheets 2021, elastic sheets 2022 and a connecting shaft 2033, wherein the metal sheets 2021 are provided with two groups, one group of metal sheets 2021 has a V-shaped structure and is fixedly connected to the circular member 204, the other group of metal sheets 2021 is rotatably connected to the circular member 204 through the connecting shaft 2033, and the elastic sheets 2022 are connected between the two groups of metal sheets 2021.

The air deflector 203 occupies one fourth of the area of the outer cylinder of the wind turbine 2.

The specific use mode and function of the embodiment are as follows:

two wind turbines 2 with the same output power are arranged on a main shaft 5, a common generator is arranged between the two wind turbines 2, a stator is fixed on one wind turbine 2, the other wind turbine 2 is fixed with a rotor to form a wind driven generator, step 3, a magnetic pole 4 of a disc type generator is fixed on one wind turbine 2, a magnetic induction coil 3 is fixed on the other wind turbine 2, then the two wind turbines 2 are arranged on the main shaft to form the disc type double-speed wind driven generator, and the rotor and the stator are rotated by the installation method. Namely, when the wind driven generator works, the stator and the rotor rotate synchronously with the two wind turbines in opposite directions, the rotating speed on the generator is multiplied, under the same condition, the output electric quantity of the generator assembled by the method is twice that of the original generator, the efficiency is improved, and the manufacturing cost is saved, as shown in fig. 1, 2 and 3;

two magnetic poles 4 of a disk generator are respectively fixed on one surface of each of two wind turbines 2, a disk generator induction coil 3 is arranged between the two magnetic poles 4 and is fixed on a main shaft 5, so that a multi-speed wind generator is formed, as shown in figure 1, the two magnetic poles 4 of a double-magnetic-pole disk generator are respectively fixed on one surface of each of the two wind turbines 2, the disk generator induction coil 3 is arranged between the two magnetic poles 4 and is fixed on the main shaft 5, so that the multi-speed wind generator is formed, as shown in figure 4, and a collecting ring and a carbon brush can be omitted;

an air deflector 203 and an air deflector 202 are arranged on the windward side of a vertical axis wind turbine, the air deflector 203 occupies about one fourth of the area of an excircle barrel of the wind turbine 2, the air deflector 202 and the air deflector 203 are vertical and are connected into a whole through a main shaft 5, the air deflector 203 can rotate around the main shaft 5 under the action of the air deflector 202, therefore, no matter the natural wind direction is in the middle and low wind speed, the wind rudder 202 always ensures that the wind deflector 203 shields the half area of the windward side of the wind turbine 2 to eliminate the acting force of the reverse wind, under the same conditions, the efficiency of the wind driven generator is greatly increased, as shown in fig. 4 and 5, and in addition, the wind deflector 203 can generate beneficial effects on adjacent wind turbines in a wind power generation matrix, that is, the wind deflector 203 in the wind turbine A guides the reverse wind to the adjacent wind turbine B, and the wind turbine B can obtain more natural wind energy, so that the wind deflector 203 increases the efficiency of the adjacent wind power generation matrix group; when the natural wind speed approaches or exceeds the cut-out wind speed of the wind turbine, the wind rudder 202 approaches the right triangle from the isosceles triangle under the action of strong wind, so that the wind deflector gradually approaches the middle part of the windward side of the wind turbine 2 to shield the acting force of the strong wind, and the wind turbine 2 rotates at a reduced speed to prevent stalling and damage, as shown in fig. 6.

The invention is not described in detail, but is well known to those skilled in the art.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A device for improving efficiency of a wind driven generator is characterized in that: including doubly fast aerogenerator (1), doubly fast aerogenerator (1) includes wind energy conversion system (2), magnetic induction coil (3), magnetic pole (4), main shaft (5), sleeve bearing and endotheca extension (6) and electric power output wire (7), wind energy conversion system (2) are equipped with two sets ofly and install respectively at the upper and lower both ends of same root main shaft (5), and magnetic induction coil (3) fix on wind energy conversion system (2), and magnetic pole (4) are fixed on another wind energy conversion system (2), install collecting ring and carbon brush and establish the inboard at magnetic induction coil (3) above sleeve bearing and endotheca extension (6), electric power output wire (7) are connected in the bottom of wind energy conversion system (2).

2. The apparatus for enhancing efficiency of a wind turbine as defined in claim 1, wherein: be equipped with wind wheel (201) on wind energy conversion system (2), and wind wheel (201) include blade (2011), inner cylinder (2012), upper cover plate (2013), lower apron (2014), sleeve bearing (2015) and pressure bearing (2016), sleeve bearing (2015) is inlayed in the inboard upper end of inner cylinder (2012), and pressure bearing (2016) inlays the inboard lower extreme of inner cylinder (2012), blade (2011) respectively with inner cylinder (2012), upper cover plate (2013) and lower apron (2014) fixed connection, and upper cover plate (2013), lower apron (2014) establish respectively in the upside of sleeve bearing (2015), the downside of pressure bearing (2016), main shaft (5) run through sleeve bearing (2015) and pressure bearing (2016) and constitute a wind energy conversion system (2).

3. The apparatus for enhancing efficiency of a wind turbine as defined in claim 2, wherein: the wind turbine (2) further comprises a wind direction rudder (202), an air guide plate (203), an air guide plate bearing (2031) and a circular member (204), wherein the wind direction rudder (202) is provided with two groups which are respectively arranged on the outer side of the air guide plate (203), the wind direction rudder (202) is further arranged on the air guide plate (203) through the circular member (204), and the air guide plate (203) is rotatably sleeved on the main shaft (5) through the air guide plate bearing (2031) and is arranged on the outer side of the blade (2011).

4. The apparatus of claim 3, wherein: the wind rudder (202) is of a triangular structure and is composed of metal sheets (2021), elastic sheets (2022) and a connecting shaft (2033), two groups of metal sheets (2021) are arranged, one group of metal sheets (2021) is of a V-shaped structure and is fixedly connected to a circular component (204), the other group of metal sheets (2021) is rotatably connected to the circular component (204) through the connecting shaft (2033), and the elastic sheets (2022) are connected between the two groups of metal sheets (2021).

5. The apparatus of claim 3, wherein: the air deflector (203) occupies one fourth of the area of the excircle barrel of the wind turbine (2).

6. The method of enhancing the efficiency of a wind turbine according to claims 1-5, wherein: step 1), two wind turbines (2) with the same output power are arranged on a main shaft (5), a common generator is arranged between the two wind turbines (2), a stator is fixed on one wind turbine (2), and the other wind turbine (2) is fixed with a rotor to form a wind driven generator; step 2), fixing a magnetic pole (4) of the disc type generator on one wind turbine (2), fixing a magnetic induction coil (3) on the other wind turbine (2), and then installing the two wind turbines (2) on a main shaft to form a disc type double-speed wind driven generator; and 3) installing an air deflector (203) and an air deflector (202) on the vertical axis wind turbine (2), enabling the air deflector (202) to be perpendicular to the air deflector (203) and to be connected with the air deflector (203) into a whole through a main shaft (5), and enabling the air deflector (203) to rotate around the main shaft (5) under the action of the air deflector (202).

7. The method of enhancing the efficiency of a wind turbine according to claim 6, wherein: in the step 2), two magnetic poles (4) of the disc type generator are respectively fixed on one surface of each of the two wind turbines (2), and an induction coil (3) of the disc type generator is arranged between the two magnetic poles (4) and fixed on the main shaft (5), so that the multi-speed wind driven generator is formed.