CN218934607U

CN218934607U - Variable frequency controller for wind power generation equipment

Info

Publication number: CN218934607U
Application number: CN202223575042.7U
Authority: CN
Inventors: 李岩
Original assignee: Shanghai Hanzhou Industrial Co ltd
Current assignee: Shanghai Hanzhou Industrial Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-04-28
Anticipated expiration: 2032-12-30

Abstract

The utility model discloses a variable frequency controller for wind power generation equipment, which comprises a cylindrical engine room and a body, wherein the bottom of the engine room is fixedly connected with a base, a gearbox and a generator are fixedly connected to the base, an output shaft of the generator is connected with the gearbox, a shaft is connected to the central position of the outer wall of one end of the engine room in a penetrating and rotating manner, one end of the shaft positioned in the engine room is connected with the gearbox, a communication port is formed in the bottom of the engine room and the base together, and a mounting seat is arranged at the position of the engine room positioned at the communication port. According to the utility model, the piston plate is driven to slide up and down by wind as power, and the air in the cabin is continuously replaced by the air suction valve under the action of the one-way valve, so that the frequency conversion controller is well cooled, the service life of the frequency conversion controller is prolonged, and when the frequency conversion controller is damaged or fails and needs to be maintained, the body is moved out of the cabin, thereby being convenient for maintenance workers to maintain and improving the maintenance efficiency.

Description

Variable frequency controller for wind power generation equipment

Technical Field

The utility model relates to the technical field of variable frequency controllers, in particular to a variable frequency controller for wind power generation equipment.

Background

The frequency converter is an electric control device for controlling the alternating current motor by changing the frequency mode of a working power supply of the motor by applying a frequency conversion technology and a microelectronic technology, and is an essential important component in the wind generating set when the frequency converter is used for exciting a rotor of a wind driven generator, so that the amplitude, frequency and phase of the stator side output voltage of the doubly fed generator are the same as those of a power grid, and adverse effects of grid-connected impact current on the motor and the power grid are reduced.

The existing variable frequency controller for wind power generation equipment is mostly installed in a cabin of the wind power generation equipment, when the variable frequency controller is damaged or fails to maintain, the cabin is required to be detached and opened, the cabin is more troublesome, the cabin is of a closed structure, heat generated during the working of the variable frequency controller is not easy to dissipate, the variable frequency controller is caused to be in a high-temperature environment for a long time, the service life of the variable frequency controller is influenced, and the variable frequency controller for the wind power generation equipment is provided for this purpose.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a frequency conversion controller for wind power generation equipment.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a frequency conversion controller for wind power generation equipment, includes cylindric cabin and body, the bottom fixed connection base in cabin, installation fixedly connected with gearbox and generator on the base, the output shaft of generator is connected with the gearbox, the central point of the one end outer wall in cabin puts and runs through the rotation and be connected with the spindle, the one end that the spindle is located the cabin is connected with the gearbox, the intercommunication mouth has been offered jointly to the bottom in cabin and base, the cabin is located intercommunication mouth department and is provided with the mount pad, the body is installed and is fixed on the mount pad.

Preferably, the mounting seat is provided with symmetrically distributed threaded shafts at two sides of the body in a rotating manner, two connecting columns are fixedly connected to the inner wall of the top of the engine room, the lower end of each connecting column is provided with a threaded groove, and the two threaded shafts are respectively connected with the threaded grooves of the two connecting columns through threads.

Preferably, the cavity has been seted up to mount pad central point put, the connecting chamber has all been seted up at the both ends of mount pad, the both sides cavity wall of cavity rotates jointly and is connected with the main shaft, two the lower extreme of screw thread axle extends to two respectively and connects the intracavity and coaxial fixedly connected with first bevel gear, the both ends of main shaft extend to the connecting intracavity of both sides respectively and coaxial fixedly connected with second bevel gear, first bevel gear and second bevel gear intermeshing, the bottom rotation of cavity is connected with the control axle, the coaxial fixedly connected with third bevel gear of upper end of control axle, the main shaft is located the coaxial fixedly connected with fourth bevel gear of one end in the cavity, third bevel gear and fourth bevel gear intermeshing, the lower extreme of control axle extends to the outside of mount pad and coaxial fixedly connected with rocking wheel.

Preferably, the threads of the two threaded shafts are in opposite directions, and the two second bevel gears on the main shaft are in opposite directions.

Preferably, the cabin is kept away from the intake pipe of one side outer wall sealing connection L type of spindle, the top outer wall fixedly connected with of cabin is fixed the case, fixed incasement sealing sliding connection has the piston board, the up end fixedly connected with connecting rod of piston board, the top case wall and the fixedly connected with pterygoid lamina of fixed case are run through to the upper end of connecting rod, the up end fixedly connected with of piston board two springs, two the upper end and the top inner wall fixedly connected with of fixed case of spring, the bottom fixedly connected with air duct and the cabin intercommunication of fixed case, the side case wall sealing connection that the fixed case is close to the bottom has the outlet duct.

Preferably, the mouth of pipe of intake pipe is down and is fixed with the dust screen, the air duct is close to the one end of fixed box with the outlet duct and all is provided with the check valve.

The utility model has the following advantages:

1. according to the utility model, the piston plate is driven to slide up and down by wind as power, and the air in the cabin is continuously replaced by the air suction valve under the action of the one-way valve, so that good heat dissipation is carried out on the variable frequency controller, and the service life of the variable frequency controller is prolonged;

2. according to the utility model, when the variable frequency controller is damaged or fails and needs to be maintained, the two threaded shafts are driven to reversely rotate at the same speed through the meshing transmission of the two groups of bevel gears, the whole installation seat is separated from the engine room by utilizing the threads, and the installation seat is lowered and the body is brought out of the engine room at the same time, so that maintenance workers can maintain conveniently, and the maintenance efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of a variable frequency controller for a wind power plant according to the present utility model;

FIG. 2 is a cross-sectional view of a variable frequency controller for a wind power plant according to the present utility model;

FIG. 3 is a cross-sectional view of a mounting block portion of a variable frequency controller for a wind power plant according to the present utility model;

fig. 4 is an enlarged schematic diagram of a frequency conversion controller for a wind power generation device according to the present utility model.

In the figure: 1 cabin, 2 base, 3 spindle, 4 gearbox, 5 generator, 6 mount pad, 7 body, 8 screw shaft, 9 spliced pole, 10 screw groove, 11 cavity, 12 main shaft, 13 first bevel gear, 14 second bevel gear, 15 control shaft, 16 third bevel gear, 17 fourth bevel gear, 18 rocking wheel, 19 intake pipe, 20 fixed box, 21 piston plate, 22 connecting rod, 23 pterygoid lamina, 24 spring, 25 air duct, 26 outlet duct.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-4, a variable frequency controller for wind power generation equipment comprises a cylindrical engine room 1 and a body 7, wherein the bottom of the engine room 1 is fixedly connected with a base 2, a gearbox 4 and a generator 5 are fixedly connected to the base 2, an output shaft of the generator 5 is connected with the gearbox 4, a shaft 3 is connected to the central position of the outer wall of one end of the engine room 1 in a penetrating and rotating manner, one end of the shaft 3 positioned in the engine room 1 is connected with the gearbox 4, a communication port is commonly formed in the bottom of the engine room 1 and the base 2, an installation seat 6 is arranged at the communication port of the engine room 1, and the body 7 is fixedly installed on the installation seat 6.

The installation seat 6 is provided with symmetrically distributed threaded shafts 8 at two side positions of the body 7 in a rotating mode, two connecting columns 9 are fixedly connected to the inner wall of the top of the engine room 1, threaded grooves 10 are formed in the lower end of each connecting column 9, the two threaded shafts 8 are respectively connected with the threaded grooves 10 of the two connecting columns 9 through threads, a cavity 11 is formed in the center position of the installation seat 6, connecting cavities are formed in two ends of the installation seat 6, two side cavity walls of the cavity 11 are connected with a main shaft 12 in a rotating mode, the lower ends of the two threaded shafts 8 are respectively extended into the two connecting cavities and are fixedly connected with a first bevel gear 13 in a coaxial mode, two ends of the main shaft 12 are respectively extended into the connecting cavities on two sides and are fixedly connected with a second bevel gear 14 in a coaxial mode, the first bevel gear 13 is meshed with the second bevel gear 14 in a mutually, the bottom of the cavity 11 is connected with a rotating mode, the upper end of the control shaft 15 is fixedly connected with a third bevel gear 16 in a coaxial mode, the main shaft 12 is located in the cavity 11, one end of the fourth bevel gear 17 is fixedly connected with the fourth bevel gear 16 in a coaxial mode, the lower end of the control shaft 15 is mutually meshed with the fourth bevel gear 17, the lower end of the control shaft 12 extends to the two bevel gears 12 to the opposite sides of the two bevel gears 8, and the two bevel gears are connected with opposite threads of the main shaft 12 in a rotating mode, and the two bevel gears are opposite to the two bevel gears 12 are connected with the two bevel gears 12 in a rotating mode, and the opposite to the opposite directions, and the two bevel shafts are connected with the main shaft 12 is connected with the opposite shafts and the bevel shaft 8.

The cabin 1 is kept away from the air inlet pipe 19 of one side outer wall sealing connection L type of spindle 3, the top outer wall fixedly connected with fixed box 20 of cabin 1, sealing sliding connection has piston board 21 in the fixed box 20, the up end fixedly connected with connecting rod 22 of piston board 21, the upper end of connecting rod 22 runs through the top case wall of fixed box 20 and fixedly connected with pterygoid lamina 23, the up end fixedly connected with two springs 24 of piston board 21, the upper end and the top inner wall fixedly connected with of fixed box 20 of two springs 24, the bottom fixedly connected with air duct 25 and cabin 1 intercommunication of fixed box 20, the side case wall sealing connection that is close to the bottom of fixed box 20 has outlet duct 26, the mouth of pipe of air duct 19 is down and is fixed with the dust screen, the one end that is close to fixed box 20 of air duct 25 and outlet duct 26 all is provided with the check valve, the check valve of air duct 25 every only allows the air to flow from cabin 1 to fixed box 20 in, the check valve in the outlet duct 26 only allows the air to flow from inside the fixed box 20.

When the air conditioner is used, because the wind power on the wind power generation equipment is in a changing state at any moment, the wing plate 23 positioned at the top of the fixed box 20 can pull the piston plate 21 to slide up and down under the action of wind flow, and the check valve exists, hot air in the engine room 1 is pumped into the fixed box 20 through the air duct 25 in the process of sliding up and down, and the pumped air is discharged through the air outlet pipe 26, so that the air pressure in the engine room 1 is reduced, and external air enters the engine room 1 through the air inlet pipe 19 to be supplemented, so that the air circulation in the engine room 1 is realized, the good heat dissipation is carried out on the variable frequency controller, and the service life of the variable frequency controller is prolonged.

When the variable frequency controller is damaged or fails and needs to be maintained, the rocking wheel 18 at the bottom of the rotatable cabin 1 is provided with the control shaft 15 to rotate, the two threaded shafts 8 are driven to rotate reversely at the same speed through the meshing transmission of the two groups of bevel gears, the whole installation seat 6 is lowered and separated from the cabin 1 by utilizing threads, the installation seat 6 is lowered, the body 7 is brought out of the cabin 1, maintenance workers are facilitated to maintain, maintenance efficiency is improved, and the rocking wheel 18 is reversely rotated to control the installation seat 6 to be moved upwards and be closed again with the cabin 1 after the maintenance is completed.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a variable frequency controller for wind power generation equipment, includes cylindric cabin (1) and body (7), its characterized in that, the bottom fixed connection base (2) of cabin (1), install fixedly connected with gearbox (4) and generator (5) on base (2), the output shaft of generator (5) is connected with gearbox (4), the central point of the one end outer wall of cabin (1) puts through rotation and is connected with spindle (3), one end that spindle (3) are located cabin (1) is connected with gearbox (4), the intercommunication mouth has been offered jointly to the bottom of cabin (1) and base (2), cabin (1) are located intercommunication mouth department and are provided with mount pad (6), body (7) installation is fixed on mount pad (6).

2. The variable frequency controller for wind power generation equipment according to claim 1, wherein the installation seat (6) is provided with symmetrically distributed threaded shafts (8) at two side positions of the body (7) in a rotating manner, two connecting columns (9) are fixedly connected to the inner wall of the top of the nacelle (1), a threaded groove (10) is formed in the lower end of each connecting column (9), and the two threaded shafts (8) are respectively connected with the threaded grooves (10) of the two connecting columns (9) through threads.

3. The variable frequency controller for wind power generation equipment according to claim 2, wherein the central position of the mounting seat (6) is provided with a cavity (11), both ends of the mounting seat (6) are provided with connecting cavities, two side cavity walls of the cavity (11) are connected with a main shaft (12) in a co-rotation mode, the lower ends of the two threaded shafts (8) respectively extend into the two connecting cavities and are coaxially and fixedly connected with a first bevel gear (13), both ends of the main shaft (12) respectively extend into the connecting cavities on both sides and are coaxially and fixedly connected with a second bevel gear (14), the first bevel gear (13) is meshed with the second bevel gear (14) mutually, the bottom of the cavity (11) is rotationally connected with a control shaft (15), the upper end of the control shaft (15) is coaxially and fixedly connected with a third bevel gear (16), the main shaft (12) is positioned in the cavity (11) and is coaxially and fixedly connected with a fourth bevel gear (17), the third bevel gear (16) is meshed with the fourth bevel gear (17) mutually, and the lower end of the control shaft (15) extends to the outer side of the mounting seat (6).

4. A variable frequency controller for a wind power plant according to claim 3, characterized in that the threads of the two threaded shafts (8) are counter-rotating and the two second bevel gears (14) on the main shaft (12) are counter-rotating.

5. The variable frequency controller for wind power generation equipment according to claim 1, wherein an L-shaped air inlet pipe (19) is connected to an outer wall of one side of the nacelle (1) far away from the crankshaft (3), a fixed box (20) is fixedly connected to an outer wall of the top of the nacelle (1), a piston plate (21) is connected to the fixed box (20) in a sealing sliding manner, a connecting rod (22) is fixedly connected to an upper end face of the piston plate (21), the upper end of the connecting rod (22) penetrates through a top box wall of the fixed box (20) and is fixedly connected with a wing plate (23), two springs (24) are fixedly connected to the upper end of the piston plate (21), the upper ends of the two springs (24) are fixedly connected to the top inner wall of the fixed box (20), an air duct (25) is fixedly connected to the bottom of the fixed box (20) and is communicated with the nacelle (1), and an air outlet pipe (26) is connected to a side box wall of the fixed box (20) near the bottom.

6. A variable frequency controller for a wind power generation device according to claim 5, wherein the mouth of the air inlet pipe (19) faces downwards and is fixed with a dust screen, and one ends of the air guide pipe (25) and the air outlet pipe (26) close to the fixed box (20) are respectively provided with a one-way valve.