WO2013060166A1

WO2013060166A1 - Method for on-site installation of vertical-axis wind generator

Info

Publication number: WO2013060166A1
Application number: PCT/CN2012/078359
Authority: WO
Inventors: 邓允河
Original assignee: Deng Yunhe
Priority date: 2011-10-29
Filing date: 2012-07-09
Publication date: 2013-05-02
Also published as: CN102425529B; CN102425529A

Abstract

Disclosed is a method for installation of a vertical-axis wind generator. The method comprises the following steps: (A) constructing the foundations of a central pylon (1); (B) constructing a reinforced concrete central pylon on the foundations; (C) installing a hoist (5) at the top of the central pylon; (D) each mounting platform (3), generator (4), wind wheel (2) and power generating device constituting a power generating unit, and according to the following steps, the hoist lifting successively from top to bottom all the power generating units: (a) lifting blades (21) onto the central pylon; (b) lifting a shaft coupling (6) onto the central pylon and connecting same with the wind wheel; (c) lifting a master gear (10) onto the central pylon and connecting same with the shaft coupling; and (d) lifting the generator and the power generating device onto the mounting platform, and meshing the generator with the master gear via a gear transmission system. The present method involves convenient installation and debugging, short construction time, and low costs.

Description

Field installation method of vertical axis wind power generator

The invention relates to a field installation method for a wind turbine, in particular a vertical axis wind turbine. Background technique

As we all know, wind turbines include horizontal and vertical axes. The power generation principle is basically the same. The power generation efficiency is related to the wind speed and the effective wind energy utilization area of the wind turbine. Simply put, the larger the wind turbine, the higher the power generation efficiency. After years of development, horizontal-axis wind turbines have achieved better development than vertical-axis wind turbines because of the extreme heights that can be carried by the towers of horizontal-axis wind turbines and vertical-axis wind turbines. The wind turbine of a horizontal axis wind turbine has a higher utilization rate of wind energy than a wind turbine of a vertical axis wind power generation. After years of research, horizontal axis wind turbines can be said to have reached the technical bottleneck, and it is difficult to make major breakthroughs. This is because the horizontal shearing force of the horizontal axis wind turbine's wind turbine to the tower column is large. The height of the column, which limits the height that can be achieved by the wind wheel and the effective wind energy utilization area; however, the vertical axis wind turbine is different, and the lateral shear force of the wind wheel to the column is small, that is, When the column load is allowed, the wind turbine of the vertical axis wind turbine can be made higher and higher to improve its power generation efficiency. Therefore, the vertical axis wind turbine has more development prospects. At present, there are many vertical axis wind turbines in development. For example, the applicant has a patent application for vertical axis wind turbines. A vertical wind turbine with the publication number CN101545457 includes a central tower and is located at the center tower. More than one vertical wind power generation unit on the column, the vertical wind power generation unit includes a first bearing, a generator, a second bearing, a third bearing, and a blade. A connecting flange is disposed under the generator, the connecting flange is fixedly connected to a lower end of the generator rotor, and an upper end of the generator rotor is connected to the second bearing outer ring. An exciter is disposed under the connecting flange, the exciter includes a rotor and a stator, the upper end of the exciter rotor is connected to the connecting flange, and the lower end is connected to the outer ring of the first bearing, and the lower end of the blade is outside the second bearing The ring is fixedly connected, and the upper end of the blade is fixedly connected with the outer ring of the third bearing. The generator of this structure is an outer rotor generator, and the inner stator surrounds the central tower. For the structural strength, the diameter of the central tower is generally made larger. Therefore, the diameter of the generator is also required. To do very large, the corresponding exciter should also be relatively large; for such a large equipment, installation and commissioning are very troublesome, and the installation period is long and the installation cost is huge. Summary of the invention

The technical problem to be solved by the present invention is to provide a field installation method for a vertical axis wind power generator, which is convenient to install and debug, and has a short installation period and low installation cost.

In order to solve the above technical problem, the technical solution of the present invention is: A field installation method for a vertical axis wind power generator, comprising the following steps:

(1) Construction of the bottom foundation of the central tower;

(2) constructing a central column of reinforced concrete on the bottom; the central tower includes two or more mounting platforms for installing the generator and the power generating equipment and surrounding the central tower, the mounting platform being integrally formed with the central tower column, The installation platform is provided with an aisle for the passage of the blade, and the aisle vertically runs through the installation platform;

(3) installing a crane at the top of the central tower column;

(4) Each installation platform, the generator on the installation platform, the Φ-shaped wind wheel with at least two blades and the power generation equipment matched with the generator form a power generation unit, and the crane is in order from top to bottom according to the central column Lifting all power generating units in turn; the lifting steps of the crane for each power generating unit include: (a) lifting the blades that make up the wind wheel to the center tower; (b) lifting the coupling to the center tower and in the wind Below the wheel, the upper end of the coupling is connected to the lower end of the rotor; (c) a main gear is hoisted to the central tower and below the coupling, the main gear surrounds the central tower and is connected to the lower end of the coupling; (d) The generator and power generation equipment are hoisted to the installation platform, and the generator is meshed with the main gear through the gear transmission system.

As an improvement, in the step (1), the bottom foundation is built in a sea area or a land area.

As an improvement, in the step (2), the installation method of the installation platform is as follows:

(2.1) arranging an inner formwork and an outer formwork of the center column on the bottom base, and forming a grouting cavity between the inner and outer formwork, and pre-burying the steel member and the steel bar for building construction in the grouting cavity, the inner The template is in the form of a cylinder, and the outer template is provided with two or more annular convex cavities for forming a mounting platform for accommodating the central tower for mounting a generator, the annular protruding cavity and the grouting The cavity is connected; (2.2) Fill concrete between the inner and outer formwork.

In an improvement, in the step (2.1), a distance between the adjacent two annular protruding cavities is greater than a height of the wind turbine of the vertical axis wind power generator; and the annular protruding cavity is provided with a steel component The steel member extends into the perfusion chamber; the reinforcing bar in the perfusion chamber extends into the annular protruding cavity; in the step (2.2), the grouting is performed by means of segmented grouting.

As an improvement, the crane first needs to hoist the rail to the central tower before lifting the blade. The upper end of the rail extends to the upper end of the wind turbine. The lower end of the rail extends to the lower end of the wind turbine, and the rail is aligned with the aisle on the mounting platform. .

As an improvement, the crane moves along the track as the crane lifts the blades.

As an improvement, in the case of a high wind blade stall, the crane lifts the blade down to the ground and the blade moves along the track.

As an improvement, in the step (4), the first bearing and the second bearing are hoisted by the crane to the central tower, the first bearing is located at the upper end of the wind wheel and is connected to the upper end of the wind wheel, and the second bearing is located at the lower end of the main gear and Main gear connection.

As an improvement, a brake device is installed in the coupling.

As an improvement, in the step (4), the generator is fixed on the mounting platform by bolts; after the generator and the power generating equipment are installed, a protective cover for protecting the generator and the power generating device is constructed on the mounting platform.

The beneficial effects of the present invention compared to the prior art are:

1. Through the gear transmission system, the speed ratio of the main gear to the shaft of the generator can be changed. Although the speed of the wind wheel is low, after the adjustment of the gear transmission system, a larger speed can also be output to the shaft of the generator. Therefore, it is possible to use a high-speed generator. Compared with the prior art low-speed generator, the high-speed generator has a smaller volume at the same power generation. By installing the platform, the generator is installed more. Convenience;

2. Since the generator volume is greatly reduced, the weight of the generator rotor is also reduced, and the load on the wind turbine is reduced. Therefore, the starting wind speed of the wind turbine is smaller, which is beneficial to the wind turbine generating electricity even at low wind speed. ;

3. The generator volume is greatly reduced, the installation cost, manufacturing cost and transportation cost are greatly reduced; and the difficulty of maintenance and repair is reduced;

4. The center column of reinforced concrete can be made higher, and multiple amps can be set on the center column. Install the platform, the installation platform can be equipped with power generation equipment, and the corresponding wind turbines are combined to form an independent power generation unit. The installation of multiple power generation units on one central tower column can increase the power generation of the entire vertical axis wind power generator; Installation of generators and power generation equipment has become easier;

5. The device consisting of cranes, removable blades and rails to avoid stall caused by strong winds. This structure is simple and can solve the problem of stalling of the generator set and blade breakage when the wind is particularly strong or typhoon, ensuring the safety of the generator set. In addition, the crane can function as a good assembly blade, especially suitable for use in high-profile vertical axis wind turbines;

1 is a schematic structural view of a vertical axis wind turbine of Embodiment 1.

2 is a schematic structural view of a vertical axis wind turbine of Embodiment 2.

Figure 3 is an enlarged view of A of Figure 1.

Figure 4 is an enlarged view of B of Figure 1.

Figure 5 is a schematic diagram of the structure of the installation platform.

Figure 6 is a longitudinal sectional view of the mounting platform.

Figure 7 is a transverse cross-sectional view of the mounting platform.

Figure 8 is a schematic view of the structure of the blade.

Figure 9 is a view showing the manner in which the blade of the embodiment 1 is connected to the track.

Figure 10 is a view showing the connection of the blade to the track of the embodiment 2.

Figure 11 is a schematic view of the structure of the crane.

Figure 12 is a schematic view of a crane hoisting blade.

Figure 13 is a schematic view showing the structure of the brake device.

Figure 14 is a schematic view of a squirrel cage structure. detailed description

The invention will now be further described with reference to the drawings of the specification.

Example 1

As shown in FIG. 1 , a vertical axis wind power generator includes a central tower 1 , the central tower Two or more power generating units are disposed on the column 1. In this embodiment, the central tower 1 is a hollow reinforced concrete central column 1 , and the central tower 1 is provided with two power generating units arranged up and down. . The power generating unit includes a wind wheel 2, a main gear 10, and two or more generators 4. In this embodiment, two generators 4 are symmetrically disposed around the main gear 10; the wind wheel 2 is a Φ-shaped wind wheel, and the wind wheel 2 is composed of two symmetrical blades 21 . As shown in FIGS. 3 and 4, a first bearing 8 is disposed on the center tower 1 at a position corresponding to the upper end of the wind wheel 2, and a second bearing 9 is disposed on the center tower 1 at a position corresponding to the lower end of the wind wheel 2. The upper end of the blade 21 is connected to the outer ring of the first bearing 8 through the first connecting flange 17; the lower end of the blade 21 passes through the second connecting flange 18, the coupling 6, the third connecting flange 19, the main gear 10, and the The outer ring of the two bearings 9 is connected. The bearing of the embodiment is a double volleyball slewing bearing, and the bearing is prior art, and will not be described in detail herein, and the structure and working principle of the person skilled in the art should be known. The wind wheel 2 is pivotally connected to the center tower 1 by a first bearing 8 and a second bearing 9, and the wind wheel 2 and the main gear 10 have synchronous rotation speeds.

As shown in FIG. 3, the main gear 10 is respectively connected to the rotating shaft of the generator 4 through a gear transmission system. In this embodiment, the gear transmission system is a bevel gear, the main gear 10 and the cone The gear meshes, and the bevel gear is sleeved on the rotating shaft of the horizontally placed generator 4. Therefore, the wind wheel 2 is interlocked with the rotating shaft of the generator 4 through the main gear 10 and the bevel gear to realize the vertical rotation of the wind wheel 2. Turning into the horizontal rotation of the generator 4, the installation of the generator 4 is simpler and more convenient for the vertical axis wind turbine 4.

As shown in FIGS. 3, 4, and 14, between the first bearing 8 and the second bearing 9, two or more connecting pipes uniformly distributed on the same circumference are disposed, and the upper end of the connecting pipe passes through the first connecting flange 17 and the The outer ring of a bearing 8 is fixedly connected, and the lower end of the connecting pipe is connected to the second connecting flange 18, and the outer ring of the first bearing 8 is synchronized with the outer ring of the second bearing 9 through the connecting pipe. The first connecting flange 17 and the second connecting flange 18 of the connecting pipe form a squirrel cage structure. Since the wind speed at the upper end of the blade 21 is different from the wind speed at the lower end, the wind speed at the upper end is generally larger than the wind speed at the lower end. It will cause the blade 21 to rotate faster at the upper end than at the lower end, but since the blade 21 is an entire structure, the upper end and the lower end of the blade 21 must have synchronized rotational speeds, so that the blade 21 may be twisted and destroyed. The optimum windward area of the blade 21 reduces the utilization of the wind energy of the pair of blades 21. The squirrel cage is designed to transmit the moment at the upper end of the blade 21 to the lower end of the blade 21, so that the blade 21 is as much as possible to reduce the degree of distortion of the blade 21 during the rotation.

A control gear transmission system is connected between the main gear 10 and the bevel gear and the main gear 10 A clutch (not shown) is provided with a speed sensor (not shown) on the rotating shaft of the wind wheel 2 and the generator 4, and the speed sensor is electrically connected to the clutch. When the speed sensor detects that the rotational speed of the rotating shaft 2 or the rotating shaft of the generator 4 exceeds a preset value, a signal is sent to the clutch to disconnect the clutch transmission system from the main gear 10; when the speed sensor detects the rotational speed of the wind wheel 2 When the preset value is reached, a signal is sent to the clutch to reconnect the clutch to the gear transmission system and the main gear 10.

As shown in FIGS. 5 to 7, the power generating unit includes a mounting platform, the central tower 1 is a hollow reinforced concrete structure, the mounting platform surrounds the central tower 1, the mounting platform and the central tower Column 1 is integrally grouted. The mounting platform is internally provided with I-beams, and the I-beams are horizontally disposed and penetrate the center column 1 and are vertically interlaced to form a grid-like distribution, and the building structure in the center column 1 is extended to the office by steel bars. Said within the installation platform. The mounting platform is provided with a mounting screw hole, and the power generating device such as the generator 4 and the control cabinet is fixed to the mounting platform by bolts. The installation platform is provided with a protective cover, the protective cover surrounds the installation platform, the protective cover is provided with doors and windows to form a weatherproof house, and the generator 4 is disposed in the house for protecting power generation The power generation equipment such as the machine 4, the control cabinet, and the transmission system are protected from the external environment, and it is confirmed that the operation is in a safe environment, which can increase the service life of the power generation equipment. The distance between the adjacent two mounting platforms is used to mount the wind wheel 2 of the vertical axis wind turbine 4. For the convenience of future maintenance, the center tower column 1 can be provided with a maintenance port to the channel in the center tower column 1. Maintenance personnel can enter the channel of the center tower column 1 through the maintenance port, and set up the cage in the channel, repair The personnel reach the different heights of the central tower 1 through the cage, which is very convenient for the vertical axis wind turbine 4 having the multi-layer power generating unit; in addition, the cable of the upper power generating unit can also be routed through the channel.

As shown in FIG. 8, the top of the center tower 1 is provided with a crane 5, and the crane 5 is provided with a hook 52; the blade 21 is arcuate, and is composed of a string 212 and a corresponding arc 211, the arc There are more than one arm 22 between the 211 and the string 212. The arm 22 is provided with a plurality of lifting lugs 24 for hanging by the hooks 52. The string 212 is provided with two or more pulleys 26; A number of rails 7 having the same number as the number of vanes 21 are disposed between the first bearing 8 and the second bearing 9 in the power generating unit, and the upper end of the rail 7 is connected to the first connecting flange 17, and the lower end of the rail and the second connecting flange 18 is connected; the chord 212 and the pulley 26 constitute a sliding mechanism that is slidably engaged with the rail 7; the upper and lower ends of the blade 21 are provided with a male connecting mechanism 25, and the rail 7 corresponds to the upper and lower blades 21 A female connecting mechanism 141 is disposed at the end, and the male connecting mechanism 25 is engaged with the female connecting mechanism 141; the mounting platform 3 is provided with an aisle 32 through which the blade 21 passes, and the aisle 32 vertically penetrates the mounting platform 3.

As shown in FIG. 9 , in the embodiment, the male connecting mechanism 25 is two first mounting ears 251 arranged side by side with mounting holes, and the female connecting mechanism 141 is a second mounting ear having a mounting hole. The second mounting ear is inserted between the two first mounting ears 251, and the first mounting ears 251 and the second mounting ears are fixed by a pin connection. The blade 21 is detachable from the rail 7 to facilitate the lifting of the blade 21 by the crane 5.

As shown in FIG. 11, the crane 5 includes a revolving tower 57, a boom 54, a balance arm 55, a counterweight 56, a lifting trolley 53, a trolley traveling mechanism, a hook 52, a cable 51, and a lifting mechanism 58. And the control system; the boom 54 and the balance arm 55 are mounted on the swing tower 57, the balance weight 56 is mounted at one end of the balance arm 55, the trolley travel mechanism is disposed on the boom 54, and the lift carriage 53 is disposed at In the carriage running mechanism, the hook 52 is disposed below the crane trolley 53, the hook 52 is coupled to the cable 51 end, and the other end of the cable 51 is coupled to the hoist mechanism 58.

As shown in Fig. 12, when the strong wind is encountered, the blade 21 is suspended to the ground by the crane 5, and the specific steps of the crane 5 for hoisting the blade 21 are as follows: The crane 5 hooks the lifting lug 24 of the blade arm 22 by the hook 52 Then, the connection of the upper and lower ends of the blade 21 is opened to disengage the blade 21 from the column; the crane 5 hoists the blade 21 downward, and the blade 21 is always slid along the track 7 during the lowering process.

The device which is composed of the crane 5, the detachable blade 21 and the rail 7 to avoid stall caused by strong wind has a simple structure, and can solve the problem that the generator 4 stalls and the blade 21 is broken when the wind force is particularly strong or typhoon, and the power generation is ensured. The safety of the machine 4; in addition, the crane 5 can function as a good assembly of the blades 21, and is particularly suitable for use in a high-profile vertical-axis wind turbine 4.

As shown in FIG. 13, the coupling 6 is a flexible coupling, and the upper end of the coupling 6 is connected to the lower end of the wind wheel 2 through the second connecting flange 18, and the lower end of the coupling 6 passes through the third connecting flange 19 and The main gear 10 is coupled, and the main gear 10 is fixed to the outer ring of the second bearing 9, so that the wind wheel 2, the coupling 6, and the main gear 10 can be synchronized. A brake device is disposed in the coupling 6, and the brake device includes an annular brake disk 61 and one or more brake devices 62. The brake disk 61 includes a fixing portion 611 and a friction portion 612, and a slope transition is provided between the fixing portion 611 and the friction portion 612. The fixing portion 611 is fixed on the coupling 6; the upper and lower surfaces of the friction portion 612 are provided with anti-slip stripes in the radial direction, and the anti-slip stripes are radial, which increases the friction between the brake and the brake disc, thereby enhancing Braking effect. The brake device 62 includes a brake pad 64, a damper 65, a damper pad 66, a brake 67, and a power source 63 that drives the brake. An annular boss 68 is disposed on the center tower 1 , the damper pad 66 is disposed on the boss 68 , and the damper 65 is disposed on the damper pad 66 . The brake pad 64 is disposed on the damper 65, the brake 67 is disposed on the brake pad 64, and the brake 67 is evenly distributed around the column to form a multi-point brake; The brake 67 includes brake pads disposed on the upper and lower sides of the brake disc, the brake pads are engaged with the friction portions of the brake discs; the power source 63 in the brake device is a hydraulic drive system, providing reliable and powerful Power.

When braking, the braking device actually brakes the coupling 6, but since the coupling 6 connects the wind wheel 2 with the main gear 10, the wind wheel 2 of the vertical axis wind power generator 4 can be reduced. The speed of the main gear 10, in this way, not only protects the wind wheel 2 from damage due to stalling, but also protects the generator 4 from being burnt due to excessive power generation. The brake device cooperates with the vertical axis wind turbine motor 4, and has a simple structure and a remarkable braking effect.

The wind wheel 2 is rotated by the wind, and its power is transmitted to the rotating shaft of each of the generators 4 through the main gear 10 and the gear transmission system in turn, and mechanical energy is supplied to each of the generators 4 to generate electricity. The speed ratio of the main gear 10 to the rotating shaft of the generator 4 can be changed by the gear transmission system. Although the rotating speed of the wind wheel 2 is low, after the adjustment of the gear transmission system, a large rotating speed can also be output to the rotating shaft of the generator 4. In this way, the high-speed generator 43 can be utilized, and the high-speed generator 4 is smaller in volume than the prior art low-speed generator 4 at the same power generation. In the present invention, the load of the wind wheel 2 is reduced, and the starting wind speed is smaller, which is advantageous for the wind power generator 4 to generate electricity even at a low wind speed; the generator 4 in each power generating unit is small in volume, and the manufacturing cost thereof is low, and Reduce the difficulty of maintenance and repair; the number of power generation units that can be installed on the center tower 1 is more, further improving the overall power generation of the vertical axis wind turbine.

Field installation method of vertical axis wind power generator of the invention:

(1) The bottom foundation (not shown) of the central tower is constructed, and the bottom foundation can be built on the sea or land;

(2) Construction of the central column 1 of reinforced concrete on the bottom foundation; the central tower 1 includes more than two installations for installing the generator 4 and the power generation equipment and surrounding the central tower 1 The installation platform 3 is integrally formed with the central tower 1 , and the installation platform 3 is provided with an aisle 32 for the passage of the blade, the aisle vertically runs through the installation platform 3;

(3) installing a crane 5 on top of the central tower column;

(4) Each of the mounting platform 3, the generator 4 on the mounting platform 3, the Φ-shaped wind wheel 2 having at least two blades cooperating with the generator 4, and the power generating equipment constitute a power generating unit, and the crane 5 is based on the center tower The column hoist all the power generating units in order from top to bottom;

(5) The lifting step of the crane 5 for each power generating unit comprises: (a) the first bearing 8 and the second bearing 9 to the center tower 1; (b) lifting the blades constituting the wind wheel 2 to the center column 1 Upper end of the wind wheel 2 is connected with the outer ring of the first bearing 8; (c) the coupling 6 is hoisted to the central tower 1 and below the wind wheel 2, and the upper end of the coupling 6 is connected to the lower end of the wind wheel 2; (d) installing a brake device in the coupling 6; (e) lifting a main gear 10 to the center column 1 and below the coupling 6, the main gear 10 embracing the center column 1 and the upper end and the coupling 6 is connected at the lower end, and the lower end is connected to the outer ring of the second bearing 9; (0) the generator 4 and the power generating device are hoisted to the mounting platform 3, the generator 4 is fixed to the mounting platform 3 by bolts, and the generator 4 passes through the gear transmission system Engaged with the main gear; (g) After the generator 4 and the power generating equipment are installed, a protective cover 12 for protecting the generator and the power generating equipment is constructed on the mounting platform 3.

The installation method of the installation platform 3 is as follows:

(2.1) arranging an inner formwork and an outer formwork of the center column on the bottom base, and forming a grouting cavity between the inner and outer formwork, and pre-burying the steel member and the steel bar for building construction in the grouting cavity, the inner The template is in the form of a cylinder, and the outer template is provided with two or more annular convex cavities for forming a mounting platform for accommodating the central tower for mounting a generator, the annular protruding cavity and the grouting The cavity is connected; the distance between the adjacent two annular protruding cavities is greater than the height of the wind wheel of the vertical axis wind power generator; the annular protruding cavity is provided with a steel member, and the steel member extends into Inside the perfusion chamber; the reinforcing steel in the perfusion chamber extends into the annular protruding cavity;

(2.2) Filling concrete with a sectioned infusion method between the inner and outer forms. This embodiment is basically the same as Embodiment 1, except that the central tower is provided with three power generating units arranged up and down.

In addition, in the above embodiments 1 and 2, the gear transmission system may be any other gear combination capable of functioning as a transmission, for example, the gear transmission system includes a pinion gear, a worm gear, the main gear 10 and the a pinion gear is engaged, a worm wheel is disposed on a rotating shaft of the pinion gear, and a worm is disposed on a rotating shaft of the horizontally placed generator 4, and the pinion gear is connected to the rotating shaft of the generator 4 through the worm gear worm structure, and finally the wind is realized The vertical rotation of the wheel 2 is converted into the horizontal rotation of the generator 4, and for the vertical axis wind turbine 4, the installation of the generator 4 is simpler and more convenient.

The central column of the reinforced concrete used in the invention facilitates on-site construction and solves the transportation problem; meanwhile, according to the existing reinforced concrete construction method, the construction period of the central tower is not long. The use of cranes to install blades, generators, power generation equipment, etc., is very convenient to construct; the combined structure of the blades and the generator is simple, and the assembly is more convenient and quick; the installation of the installation platform greatly reduces the installation difficulty of the generator and the power generation equipment; In general, the field installation method of the vertical axis wind power generator of the present invention achieves the purpose of simple and quick installation, and the installation cost is low.

Claims

A field installation method for a vertical axis wind turbine, characterized in that it comprises the following steps:

(1) Construction of the bottom foundation of the central tower;

(3) installing a crane at the top of the central tower column;

(4) Each installation platform, the generator on the installation platform, the Φ-shaped wind wheel with at least two blades and the power generation equipment matched with the generator form a power generation unit, and the crane is in order from top to bottom according to the central column Lifting all the power generating units in turn; the lifting steps of the crane for each power generating unit include: (a) lifting the blades that make up the wind wheel to the center tower; (b) lifting the coupling to the center tower and in the wind Below the wheel, the upper end of the coupling is connected to the lower end of the rotor; (c) a main gear is hoisted to the central tower and below the coupling, the main gear surrounds the central tower and is connected to the lower end of the coupling; (d) The generator and power generation equipment are hoisted to the installation platform, and the generator is meshed with the main gear through the gear transmission system.

2. The field installation method of a vertical axis wind power generator according to claim 1, wherein: in the step (1), the bottom foundation is built in a sea area or a land area.

3. The field installation method of a vertical axis wind power generator according to claim 1, wherein: in the step (2), the installation method of the installation platform is as follows:

(2.1) arranging an inner formwork and an outer formwork of the center column on the bottom base, and forming a grouting cavity between the inner and outer formwork, and pre-burying the steel member and the steel bar for building construction in the grouting cavity, the inner The template is in the form of a cylinder, and the outer template is provided with two or more annular convex cavities for forming a mounting platform for accommodating the central tower for mounting a generator, the annular protruding cavity and the grouting The cavity is connected;

(2.2) Fill concrete between the inner and outer formwork.

4. The field installation method of a vertical axis wind power generator according to claim 3, wherein: in the step (2.1), a distance between the adjacent two annular protruding cavities is greater than a wind wheel height of the vertical axis wind power generator; a steel member is disposed in the annular protruding cavity, the steel member extends into the filling cavity; and a reinforcing bar in the filling cavity extends to the annular protruding body In the cavity; in the step (2.2), grouting is performed by means of segmented grouting.

5. The field installation method of a vertical axis wind power generator according to claim 1, wherein: the crane first needs to hoist the rail to the central tower before lifting the blade, and the upper end of the rail extends to the upper end of the wind turbine. The lower end of the track extends to the lower end of the wind wheel and the track is aligned with the aisle on the mounting platform.

6. The field installation method of a vertical axis wind power generator according to claim 5, wherein: the crane moves along the track when lifting the blade.

7. The field installation method of a vertical axis wind power generator according to claim 5, wherein: in the case of a large wind blade stall, the crane lifts the blade to the ground and the blade moves along the track.

8. The field installation method of a vertical axis wind power generator according to claim 1, wherein: in the step (4), the first bearing and the second bearing are hoisted by a crane to the central tower, the first bearing Located at the upper end of the wind wheel and connected to the upper end of the wind wheel, the second bearing is located at the lower end of the main gear and is connected to the main gear.

9. The field installation method of a vertical axis wind power generator according to claim 1, wherein: the brake device is installed in the coupling.

10 . The field installation method of a vertical axis wind power generator according to claim 1 , wherein: in the step (4), the generator is fixed on the installation platform by bolts; after the generator and the power generation device are installed; A protective cover for protecting generators and power generation equipment is built on the installation platform.