WO2013189104A1

WO2013189104A1 - Wind wheel structure of vertical axis wind turbine and assembly method thereof

Info

Publication number: WO2013189104A1
Application number: PCT/CN2012/078313
Authority: WO
Inventors: 邓允河
Original assignee: Deng Yunhe
Priority date: 2012-06-21
Filing date: 2012-07-06
Publication date: 2013-12-27
Also published as: CN103511179B; CN103511179A

Abstract

A Φ-shaped wind wheel structure of a vertical axis wind turbine comprises bow-shaped blades (2) consisting of chords and corresponding arcs. Each blade is formed by connecting more than two blade units (21, 22, 23) and at the connection of the blade unit is provided with a supporting arm (213), ends of which are respectively attached to the chord and the arc. The blade unit is surrounded by a segmented chord section (212, 222, 232), a segmented arc section (211, 221, 231) and a supporting arm. Trolleys (6) are provided respectively at the upper and lower ends of the chord section of the blade unit. A first connection mechanism is provided between the arc sections of adjacent blade units and a second connection mechanism is provided between the chord sections of adjacent blade units. Also disclosed is an assembly method of the wind wheel structure, including the following steps: hoisting each blade unit in sequence with a crane on the top of a central tower column of the wind turbine so as to implement the assembly of one blade; and then hoisting the other blades to implement the assembly of the whole wind wheel.

Description

Vertical axis wind turbine wind wheel structure and installation method thereof

The present invention relates to a vertical axis wind turbine, and more particularly to a large vertical axis wind turbine rotor structure and a method of mounting the same. Background technique

At present, the shape of the wind turbine of the vertical axis wind turbine is varied, such as a fan-shaped structure, a sail-shaped structure, a Φ-shaped structure, etc. Among these wind turbine structures, the Φ-shaped structure has the highest utilization rate of wind energy, and the existing vertical axis wind power In the generator, a Φ-shaped wind wheel is generally used. In order to reduce the cost of electricity, the power generation of vertical-axis wind turbines needs to be continuously improved. At present, only large-scale wind turbines can meet the demand of high-power generation. Therefore, the size of wind turbines is also getting larger. . Compared with small ones, large vertical-axis wind turbines can generate more power per unit time, which can reduce power generation costs. However, due to its large size, it will be more troublesome in transportation and installation. In these aspects, power generation costs will increase. . How to reduce the transportation and installation cost of large vertical axis wind turbines has become one of the current research directions for large vertical axis wind turbines. Summary of the invention

One of the technical problems to be solved by the present invention is to provide a vertical axis wind turbine wind turbine structure, which can effectively solve the problem that the large vertical axis wind turbine wind turbine transportation and installation is difficult, and further reduce the power generation cost.

The second technical problem to be solved by the present invention is to provide a vertical axis wind turbine wind wheel installation method, which can effectively solve the problem that the large vertical axis wind turbine wind turbine transportation and installation is difficult, and further reduce the power generation cost.

In order to solve the above technical problem, the technical solution of the present invention is: a vertical axis wind turbine wind wheel structure, the wind wheel is a Φ-shaped wind wheel, which is composed of two or more blades; The blade is arcuate, consisting of a chord and a corresponding arc; the blade is formed by connecting two or more blade units, and the blade unit is provided with a support arm at a joint between the blade unit, the two ends of the arm Separatingly connected to the chord and the arc of the blade, the blade unit is surrounded by the divided string segment, the divided arc segment and the arm; the upper and lower ends of the string segment of the blade unit are respectively provided with walking In the trolley, the first connecting structure is arranged on the arc segment of the adjacent blade unit, and the second connecting structure is arranged on the string segment of the adjacent blade unit.

In an improvement, the first connecting structure includes a flange disposed at a connecting end of an arc of an adjacent blade unit, and the connecting flange is provided with a screw hole.

As a modification, the second connecting structure is formed by an engaging structure provided between adjacent traveling carriages of adjacent blade units.

As an improvement, the traveling trolley is provided with an electric lock, and the electric lock includes a controller, an executing mechanism, and a lock bolt connected to the actuator.

In order to solve the above technical problem, the technical solution of the present invention is: a method for installing a vertical axis wind turbine wind wheel, wherein the wind wheel is a Φ-shaped wind wheel, which is composed of two or more blades; The blade is arcuate, consisting of a chord and a corresponding arc; the blade is formed by connecting two or more blade units, and the blade unit is provided with a support arm at a joint between the blade unit, the two ends of the arm Separatingly connected to the chord and the arc of the blade, the blade unit is surrounded by the divided string segment, the divided arc segment and the arm; the upper and lower ends of the string segment of the blade unit are respectively provided with walking The trolley has a first connecting structure on an arc segment of the adjacent blade unit, and a second connecting structure is arranged on the string segment of the adjacent blade unit; the mounting method comprises the following steps:

(1) The first blade unit is hoisted to the central tower by a crane at the top of the central tower of the vertical axis wind turbine. During the hoisting process, the traveling carriage of the blade unit travels on the guide rail provided on the central tower. Stopping after the first blade unit position is determined, and fixing the first blade unit to the guide rail;

(2) lifting the second blade unit to the central tower column by using a crane. During the hoisting process, the traveling carriage of the blade unit walks on the guide rail provided on the central tower column until the position of the second blade unit is determined and stops. Fixing the second blade unit on the rail, and connecting the second blade unit with the first blade unit by using the first connecting structure and the second connecting structure; (3) According to the method of step (2), the remaining blade units are sequentially hoisted to the center tower and installed to complete the installation of one blade;

(4) Install the above steps (1) ~ (3) to complete the other blade installation of the rotor.

As an improvement, the traveling trolley is provided with an electric lock, the electric lock includes a controller, an actuator and a lock bolt connected with the actuator; the guide rail is provided with a lock hole, and the blade unit is hoisted to a designated position, and is controlled The actuator controls the action of the actuator, and the actuator pushes the latch out of the traveling trolley and into the locking hole of the guide rail to complete the fixing between the blade unit and the guide rail.

As a modification, a guide piece is disposed in the guide rail, and the walking carriage is provided with a guiding groove. When the leaf piece unit travels along the guide rail, the guiding piece cooperates with the guiding groove.

As an improvement, the main body of the guide rail is a channel steel, and the two sides of the opening of the channel are oppositely extended with a stopper. The beneficial effects of the present invention compared to the prior art are:

The Φ-shaped wind wheel is composed of a plurality of blades, each of which is composed of a plurality of blade units, and the smaller-sized blade unit can effectively solve the problem that the large-scale vertical-axis wind turbine wind turbine transportation and installation is difficult, further reducing the power generation cost. DRAWINGS

Figure 1 is a schematic view of the structure of a vertical axis wind turbine.

Figure 2 is a schematic view of the structure of the blade.

Figure 3 is an exploded view of the blade.

Figure 4 is a top view of a vertical axis wind turbine.

Fig. 5 is an enlarged view of a portion A of Fig. 7.

Figure 6 is a schematic view of the trolley connection.

Figure 7 is a schematic view of the structure of the crane.

Figure 8 is a step I of mounting the blade. Figure 9 is a step II of mounting the blade.

Figure 10 shows the mounting step III of the blade. detailed description

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

As shown in FIG. 1 , a vertical axis wind power generator includes a central tower 1 , and the central tower 1 is provided with two or more power generating units. In this embodiment, the central tower 1 is hollow. The reinforced concrete center column 1 is provided with two power generating units arranged on the upper and lower sides. The power generating unit includes a wind wheel, a generator 5 and a mounting platform 3, the lower end of the wind wheel is connected to a horizontally disposed main gear, and the main gear is connected to a horizontally or vertically arranged generator 5 through a gear transmission system, The generator 5 is mounted on the mounting platform 3, the mounting platform 3 is integrally grout-formed with the central tower 1, and the installation platform 3 is provided with an aisle through which the blades pass. When the blade 2 is hoisted, the blade 2 can pass through the aisle Install platform 3.

The surface of the center tower 1 is axially fixed with a plurality of guide rails 7. The number of the guide rails 7 is set according to the number of the wind turbine blades 2, and each of the blades 2 corresponds to a guide rail 7. The main body of the guide rail 7 is a channel 71, and the two sides of the opening of the channel 71 are oppositely extended with a stopper 73; and a guide piece 72 is disposed in the middle of the guide rail 7. The guide rail 7 is provided with a locking hole.

As shown in FIGS. 2 and 3, the wind wheel is a Φ-shaped wind wheel, which is composed of two or more blades 2, and the Φ-shaped wind wheel of the present embodiment is composed of two symmetrical blades 2 . The blade 2 has an arc shape and is composed of a chord and a corresponding arc; the blade 2 is formed by connecting two or more blade units up and down, and the blade 2 of the embodiment is connected by three blade units 21, 22, and 23 The first blade unit 21 at the upper end, the second blade unit 22 at the middle, and the third blade unit 23 at the lower end; the connecting end of the lower end of the first blade unit 21 is provided with an arm 213, the branch The two ends of the arm 213 are respectively connected to the string segment 212 and the arc segment 211 of the first blade unit 21; the upper and lower connecting ends of the second blade unit 22 are provided with an arm 223, and the two ends of the arm 223 and the second blade respectively The string segment 222 of the unit 22 is connected to the arc segment 221; the connecting end of the upper end of the third blade unit 23 is provided with an arm 233, and the two ends of the arm 233 are respectively connected with the string segment 232 and the arc segment 231 of the third blade unit 23. . The upper and lower ends of the string section 212 of the first blade unit 21 are respectively provided with the traveling carriage 6; the upper and lower ends of the string section 222 of the second blade unit 22 are respectively provided with the traveling carriage 6; the third blade unit 23 The upper and lower ends of the string section 232 are respectively provided with a walking carriage 6. A first connecting structure is disposed on the arc segment of the adjacent blade unit, and a second connecting structure is disposed on the string segment of the adjacent blade unit. As shown in FIG. 3, in the embodiment, the first connecting structure is a connecting flange 9 and a second blade unit disposed at a lower end of the arc segment 211 of the first blade unit 21 and an upper end of the arc segment 221 of the second blade unit 22. a connecting flange 9 disposed at a lower end of the arc segment 221 of the 22 and an upper end of the arc segment 231 of the third blade unit 23, wherein the connecting flange 9 is provided with a screw hole, and the arc segment of the adjacent blade unit is passed through the connecting flange 9. connection. As shown in FIG. 6, the second connecting structure is an engaging structure between the traveling carriage 6 at the lower end of the first blade unit 21 and the traveling carriage 6 at the upper end of the second blade unit 22, and a traveling trolley at the lower end of the second blade unit 22. The engagement structure between the 6 and the traveling carriage 6 at the upper end of the third blade unit 23.

As shown in FIG. 8, the engaging structure includes a protruding portion 64 at an upper end of the traveling carriage 6, and a recessed portion 65 at a lower end, and the shape of the protruding portion 64 is matched with the shape of the recessed portion 65. When the adjacent traveling carriages 6 are engaged with each other, the protruding portion 64 of the traveling trolley 6 which is below is inserted into the recessed portion 65 of the traveling carriage 6 above, and then two connecting bolts 8 are used at the joint of the two traveling trolleys. The trolleys 6 are connected to complete the connection of the strings of adjacent blade units. The walking carriage 6 is provided with an electric lock, and the electric lock comprises a controller (not labeled), an actuator (not labeled) and a latch 63 connected to the actuator, the latch 63 of the electric lock and the side of the rail 7 The keyhole fits. As shown in FIG. 7, the crane 4 includes a revolving tower 47, a boom 44, a balance arm 45, a counterweight 46, a lifting trolley 43, a trolley traveling mechanism, a hook 42, a cable 41, and a lifting mechanism 48. And the control system; the boom 44 and the balance arm 45 are mounted on the swing tower 47, the balance weight 46 is mounted at one end of the balance arm 45, the carriage travel mechanism is disposed on the boom 44, and the crane trolley 43 is disposed at In the trolley running mechanism, the hook 42 is disposed under the lifting trolley 43, the hook 42 is connected to one end of the cable, and the other end of the cable is connected to the lifting mechanism 48.

The installation method of the wind wheel includes the following steps:

As shown in Figures 4, 5 and 8, (1) the first blade unit 21 is hoisted to the center column 1 by the crane 4 at the top of the center column 1 of the vertical axis wind turbine, during the lifting process, the first blade The traveling carriage 6 of the unit 21 travels on the guide rail 7 of the center tower 1 via rollers 62, and the guide piece 72 cooperates with the guide groove 61 on the traveling carriage 6 to function as a guide for the blade unit until the position of the first blade unit 21 After the determination is stopped, the controller controls the action of the actuator, and the actuator pushes the lock bolt 63 out of the traveling carriage 6 and into the lock hole of the guide rail 7 to complete the fixing between the first blade unit 21 and the guide rail 7; the open side of the guide rail 7 The stop block 73 also plays a limiting role on the walking trolley, preventing the walking carriage 6 from coming off the guide rail 7;

As shown in FIG. 9, (2) the second blade unit 22 is hoisted to the center tower 1 by the crane 4, and the traveling carriage 6 of the second blade unit 22 travels on the guide rail 7 of the center tower 1 during the hoisting process. Until the position of the second blade unit 22 is determined to be stopped, the second blade unit 22 is fixed on the guide rail 7 by the electric lock, and the second blade unit 22 is connected to the first blade unit 21 by the first connection structure and the second connection structure. stand up;

As shown in FIG. 10, (3) the third blade unit 23 is hoisted to the center tower 1 by the crane 4, and the traveling carriage 6 of the third blade unit 23 travels on the guide rail 7 of the center tower 1 during the hoisting process. Until the position of the third blade unit 23 is determined to be stopped, the third blade unit 23 is fixed on the guide rail 7 by the electric lock, and the third blade unit 23 is connected to the second blade unit 22 by the first connection structure and the second connection structure. Get up to complete the installation of the entire blade;

The step of disassembling the blade 2 is to first disassemble the third blade unit 23, disassemble the second blade unit 22, and finally disassemble the first blade unit 21. Protect the generator and blades from damage by removing the wind wheel during strong winds.

The Φ-shaped wind wheel is composed of a plurality of blades, each blade is composed of a plurality of blade units, and the smaller-sized blade unit can effectively solve the problem that the large-scale vertical-axis wind turbine wind turbine transportation and installation is difficult, and further reduce the power generation cost.

Claims

Claim

A vertical axis wind turbine wind wheel structure, wherein the wind wheel is a Φ-shaped wind wheel, which is composed of two or more blades; wherein: the blade is arcuate, and the chord and the corresponding arc The blade is formed by connecting two or more blade units, and the blade unit is provided with a support arm at a joint between the blade unit, and the two ends of the arm are respectively connected with the chord and the arc of the blade. The blade unit is surrounded by the divided string segment, the divided arc segment and the arm; the upper and lower ends of the string segment of the blade unit are respectively provided with walking trolleys, and the arc segments of adjacent blade units are arranged There is a first connecting structure, and a second connecting structure is arranged on the string segment of the adjacent blade unit.

2. The vertical axis wind turbine rotor structure according to claim 1, wherein: the first connecting structure comprises a flange disposed at a connecting end of an arc of an adjacent blade unit, the connection Screw holes are provided on the flange.

3. A vertical axis wind turbine rotor structure according to claim 1, wherein: said second connecting structure is formed by an engagement structure provided between adjacent traveling carriages of adjacent blade units.

4. The vertical axis wind turbine wind wheel structure according to claim 1, wherein: the traveling trolley is provided with an electric lock, and the electric lock comprises a controller, an actuator and a connection with the actuator. Lock bolt.

A method for installing a vertical axis wind turbine wind wheel, wherein the wind wheel is a Φ-shaped wind wheel, which is composed of two or more blades; wherein the blade is arcuate, and the chord and corresponding The blade is composed of two or more blade units, and the blade unit is provided with a support arm at a joint between the blade unit, and the two ends of the arm are respectively connected with the chord and the arc of the blade. Connecting, the blade unit is surrounded by the divided string segment, the divided arc segment and the arm; the upper and lower ends of the string segment of the blade unit are respectively provided with walking trolleys, arcs of adjacent blade units A first connecting structure is arranged on the upper side, and a second connecting structure is arranged on the string section of the adjacent vane unit; the mounting method comprises the following steps:

(1) Lifting the first blade unit using a crane at the top of the center column of the vertical axis wind turbine Installed on the central tower column, during the hoisting process, the traveling carriage of the blade unit walks on the guide rail provided on the central tower column, stops until the position of the first blade unit is determined, and fixes the first blade unit on the guide rail. ;

(2) lifting the second blade unit to the central tower column by using a crane. During the lifting process, the traveling carriage of the blade unit travels on the guide rail provided on the central tower column until the position of the second blade unit is determined and stops. Fixing the second blade unit on the rail, and connecting the second blade unit with the first blade unit by using the first connecting structure and the second connecting structure;

(3) According to the method of step (2), the remaining blade units are sequentially hoisted to the center tower and installed to complete the installation of one blade;

6 . The method of installing a vertical axis wind turbine wind wheel according to claim 5 , wherein the first connecting structure comprises a flange disposed at a connecting end of an arc segment of an adjacent blade unit, A screw hole is provided on the connecting flange.

7. The method of installing a vertical axis wind turbine rotor according to claim 5, wherein the second connecting structure is formed by an engaging structure between adjacent traveling trolleys of adjacent blade units. form.

8 . The method of installing a vertical axis wind turbine wind wheel according to claim 5 , wherein: the walking trolley is provided with an electric lock, and the electric lock comprises a controller, an actuator and an executing mechanism. The connecting bolt is provided with a locking hole; after the blade unit is hoisted to the designated position, the controller controls the action of the actuator, and the actuator pushes the locking bolt out of the walking trolley and into the locking hole of the guide rail to complete the blade unit Fixed between the rail and the rail.

The method for installing a vertical axis wind turbine wind wheel according to claim 5, wherein: the guide rail is provided with a guide piece, the walking carriage is provided with a guiding groove, and the blade unit is along the guide rail When walking, the guide piece cooperates with the guide groove.

The method of installing a wind turbine of a vertical axis wind turbine according to claim 5, wherein: the main body of the guide rail is a channel steel, and the two sides of the slot steel have opposite ends extending with a stopper.