Automatic dust removal device for wind power generator

Abstract

The application discloses a kind of wind-driven generator automatic dust removal device, including the rotor of generator, rotating rod and cylinder body, the rotating rod is coaxially fixed with the rotor of generator, the cylinder body is fixed on the rotating rod along the radial direction of the rotating rod, the piston is slidably connected in the cylinder body, the spring is arranged in the cylinder body, one end of the spring is fixed with the piston, the other end of the spring is fixed with the one end of the cylinder body close to the rotating rod;One-way air inlet valve and one-way exhaust valve are arranged on the one end of the cylinder body away from the rotating rod, and the inlet end of the one-way exhaust valve is provided with a filter screen.The application can realize the automatic dust removal and automatic cooling of the inside of wind-driven generator cabin.

Description

Technical Field

[0001] This invention relates to an automatic dust removal device for wind turbines, belonging to the technical field of wind power auxiliary equipment. Background Technology

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives a rotor to rotate and ultimately outputs alternating current. A wind turbine typically consists of components such as a wind turbine rotor, generator (including the generator itself), directional control unit (tail fin), tower, speed limiting safety mechanism, and energy storage device.

[0003] The generator of a wind turbine is installed inside the nacelle, and there are heat dissipation holes at the rear of the nacelle. However, the heat dissipation effect of the existing wind turbine nacelle is not good, and external dust can easily enter the nacelle through the heat dissipation holes, affecting the normal operation of internal components such as the generator. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an automatic dust removal device for wind turbines, so as to solve the technical problems existing in the prior art.

[0005] The technical solution adopted by this invention is as follows: an automatic dust removal device for a wind turbine generator, characterized in that: it includes a generator rotor, a rotating rod, and a cylinder body; the rotating rod is coaxially fixed with the generator rotor; the cylinder body is fixed radially to the rotating rod; a piston is slidably and sealed inside the cylinder body; a spring is installed inside the cylinder body; one end of the spring is fixed to the piston; the other end of the spring is fixed to one end of the cylinder body near the rotating rod; a one-way intake valve and a one-way exhaust valve are installed on one end of the cylinder body away from the rotating rod; a filter screen is installed at the inlet end of the one-way exhaust valve.

[0006] Preferably, the number of cylinders is set to two or more and they are evenly distributed circumferentially along the axis of the rotating rod.

[0007] Preferably, the number of springs is set to 2.

[0008] Preferably, the cross-section of the cylinder is prismatic.

[0009] Preferably, an automatic valve is provided at the end of the cylinder away from the rotating rod, a first switch is installed on the side wall of the cylinder near the automatic valve, and a second switch is provided at the end of the side wall of the cylinder near the rotating rod. The first switch and the second switch are electrically connected to the automatic valve and the one-way exhaust valve through the same controller. During the sliding process of the piston, it can squeeze the first switch and pass over the first switch. During the sliding process of the piston, it can squeeze the second switch. The automatic valve is connected to the outside through a dust discharge pipe, and a one-way dust discharge valve is provided at the outlet end of the automatic valve.

[0010] Preferably, when the first switch is squeezed, the first switch controls the one-way exhaust valve to close and the automatic valve to open via the controller; when the first switch is squeezed again, the first switch does not operate; when the second switch is squeezed, the second switch controls the one-way exhaust valve to open and the automatic valve to close via the controller.

[0011] Preferably, the dust exhaust pipe is cylindrical, one end of the dust exhaust pipe is fixed to the cylinder and connected to the automatic valve, the other end of the dust exhaust pipe passes through the side wall of the cabin and is connected to the outside, and the dust exhaust pipe is rotatably connected to the side wall of the cabin.

[0012] Preferably, air intakes are provided at the bottom of the cabin.

[0013] The beneficial effects of this invention are:

[0014] 1. Compared with the prior art, the present invention utilizes the rotor of the generator to drive the cylinder to rotate, generating centrifugal force to make the piston slide away from the rotating rod. After the generator rotor stops rotating, the centrifugal force disappears, and the piston returns to its original position under the action of the spring. The rotor of the wind turbine rotates and stops intermittently, the cylinder intermittently draws in air, filters the dust-laden gas, and discharges clean gas into the nacelle. It also automatically discharges dust and a small amount of air to the outside, achieving continuous automatic dust removal.

[0015] 2. After pressing the manual switch, the rotor of the wind turbine rotates and stops intermittently, and the cylinder draws in and exhausts air intermittently, which can draw out the hot air inside the nacelle and achieve automatic cooling inside the nacelle. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] The reference numerals in the accompanying drawings include: 1. Engine compartment; 2. Generator rotor; 3. Rotating rod; 4. Cylinder; 5. One-way intake valve; 6. One-way exhaust valve; 7. Filter screen; 8. Automatic valve; 9. First switch; 10. Dust exhaust pipe; 11. Piston; 12. Spring; 13. Air inlet; 14. One-way dust exhaust valve; 15. Second switch.

[0019] Example 1:

[0020] An automatic dust removal device for wind turbines, such as Figure 1 As shown, the device includes a generator rotor 2, a rotating rod 3, and a cylinder 4. The generator rotor 2 is rotatably connected inside the engine compartment 1, and the axis of the generator rotor 2 is arranged horizontally. The rotating rod 3 is coaxially fixed to the right end of the generator rotor 2. The cylinder 4 is fixed to the rotating rod 3 radially. The cylinder 4 has a cuboid cross-section. A piston 11 is slidably sealed inside the cylinder 4. The piston 11 is a rectangular plate. A spring 12 is installed inside the cylinder 4. The upper end of the spring 12 is fixed to the piston 11, and the lower end of the spring 12 is fixed to the lower end of the cylinder 4. There are two springs 12, which are symmetrically arranged inside the cylinder 4. A one-way intake valve 5 and a one-way exhaust valve 6 are installed on the upper end of the cylinder 4. A filter screen 7 is installed at the inlet end of the one-way exhaust valve 6. The one-way exhaust valve 6 is an electric one-way valve.

[0021] like Figure 1 As shown, an automatic valve 8 is provided at the upper end of the cylinder body 4, and a first switch 9 is installed on the upper part of the right side wall of the cylinder body 4. The left end of the first switch 9 is spherical. The first switch 9 is electrically connected to the automatic valve 8 and the one-way exhaust valve 6 through the controller. During the up-and-down sliding process of the piston 11, it can squeeze the first switch 9 and pass over the first switch 9. When the first switch 9 is squeezed, the first switch 9 controls the one-way exhaust valve 6 to close and the automatic valve 8 to open through the controller. When the switch is squeezed again, the first switch 9 does not operate.

[0022] like Figure 1 As shown, the number of cylinders 4 is set to two or more and they are evenly distributed circumferentially along the axis of the rotating rod 3. The outlet end of the automatic valve 8 is connected to a dust discharge pipe 10, and a one-way dust discharge valve 14 is provided at the outlet end of the automatic valve 8. The dust discharge pipe 10 is fixed to the outer circumference of the cylinder 4. The dust discharge pipe 10 is annular cylindrical. The left end of the dust discharge pipe 10 is fixed to the cylinder 4 and communicates with the automatic valve 8. The right end of the dust discharge pipe 10 passes through the side wall of the engine compartment 1 and communicates with the outside. The dust discharge pipe 10 is rotatably connected to the side wall of the engine compartment 1.

[0023] like Figure 1 As shown, an air intake 13 is provided at the bottom of the cabin 1. The function of the air intake 13 is to replenish the cabin 1 with new air.

[0024] In this embodiment, the one-way exhaust valve 6, the automatic valve 8, the first switch 9, and the second switch 15 are electrically connected to the same manual switch via the controller. When the manual switch is pressed, the first switch 9 and the second switch 15 do not operate, the one-way exhaust valve 6 is in a normally closed state, and the automatic valve 8 is in a normally open state. When the manual switch is pressed again, the one-way exhaust valve 6, the automatic valve 8, the first switch 9, and the second switch 15 are reset.

[0025] The specific implementation process is as follows:

[0026] The one-way exhaust valve 6 is initially open, and the automatic valve 8 is initially closed. The rotation of the generator rotor 2 drives the rotating rod 3 and cylinder 4 to rotate. Centrifugal force is generated inside the cylinder 4. Under the action of centrifugal force, the piston 11 moves away from the rotating rod 3. The piston 11 stretches the spring 12, and positive pressure is generated inside the cylinder 4. The one-way intake valve 5 is closed, and the cylinder 4 discharges clean gas into the engine compartment 1 through the one-way exhaust valve 6. Dust is filtered into the cylinder 4 by the filter screen 7. When the piston 11 moves to squeeze the first switch 9, the first switch 9 controls the one-way exhaust valve 6 to close and the automatic valve 8 to open through the controller. At this time, the cylinder 4 discharges the dust-laden gas to the outside through the automatic valve 8, the one-way dust discharge valve 14, and the dust discharge pipe 10.

[0027] When the generator rotor 2 stops rotating, the piston 11 returns to its original position under the force of the spring 12, creating a negative pressure inside the cylinder 4. The one-way intake valve 5 opens, and the one-way exhaust valve 14 closes, allowing the cylinder 4 to draw in air from inside the engine compartment 1. During this process, the piston 11 will press against the first switch 9 again. The first switch 9 does not activate. When the piston 11 continues to move until it presses against the second switch 15, the second switch 15 controls the one-way exhaust valve 6 to open via the controller, and the automatic valve 8 closes.

[0028] Because the wind blows intermittently, the blades of the wind turbine rotate intermittently, causing the rotor 2 of the wind turbine to rotate and stop intermittently. The cylinder 4 intermittently draws in air, filters the dust-laden gas, and then discharges the clean gas into the nacelle 1. It also automatically discharges dust and a small amount of air to the outside, achieving continuous automatic dust removal.

[0029] After pressing the manual switch, the first switch 9 and the second switch 15 do not operate, the one-way exhaust valve 6 is in the normally closed state, and the automatic valve 8 is in the normally open state.

[0030] The rotation of the generator rotor 2 drives the rotating rod 3 and cylinder 4 to rotate. Centrifugal force is generated inside the cylinder 4. Under the action of centrifugal force, the piston 11 moves away from the rotating rod 3. The piston 11 stretches the spring 12, and positive pressure is generated inside the cylinder 4. The one-way intake valve 5 closes and the one-way dust discharge valve 14 opens, and the cylinder 4 exhausts air. When the generator rotor 2 stops rotating, the piston 11 returns to its original position under the force of the spring 12. Negative pressure is generated inside the cylinder 4. The one-way intake valve 5 opens and the one-way dust discharge valve 14 closes, and the cylinder 4 draws in air.

[0031] The rotor 2 of the wind turbine rotates and stops intermittently, and the cylinder 4 draws in and exhausts air intermittently, which can extract the hot air inside the nacelle 1 and achieve automatic cooling inside the nacelle 1.

[0032] Press the manual switch again to reset the one-way exhaust valve 6, automatic valve 8, first switch 9, and second switch 15. This automatic dust removal device can then be used for automatic dust removal.

[0033] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of protection of the claims.

Claims

1. An automatic dust removal device for wind turbine generators, characterized in that: The device includes a generator rotor, a rotating rod, and a cylinder. The rotating rod is coaxially fixed to the generator rotor. The cylinder is fixed radially to the rotating rod. A piston is slidably and sealed inside the cylinder. A spring is installed inside the cylinder. One end of the spring is fixed to the piston, and the other end of the spring is fixed to the end of the cylinder near the rotating rod. A one-way intake valve and a one-way exhaust valve are installed on the end of the cylinder away from the rotating rod. A filter screen is installed at the inlet end of the one-way exhaust valve. The number of cylinders is set to two or more and they are evenly distributed circumferentially along the axis of the rotating rod; The number of springs is set to 2; The cross-section of the cylinder is prismatic; An automatic valve is provided at the end of the cylinder away from the rotating rod. A first switch is installed on the side wall of the cylinder near the automatic valve, and a second switch is provided at the end of the side wall of the cylinder near the rotating rod. The first switch and the second switch are electrically connected to the automatic valve and the one-way exhaust valve through the same controller. During the sliding process of the piston, it can squeeze the first switch and pass over the first switch. During the sliding process of the piston, it can squeeze the second switch. The automatic valve is connected to the outside through a dust exhaust pipe, and a one-way dust exhaust valve is provided at the outlet end of the automatic valve. When the first switch is pressed, the first switch controls the one-way exhaust valve to close and the automatic valve to open via the controller; when the first switch is pressed again, the first switch does not operate; when the second switch is pressed, the second switch controls the one-way exhaust valve to open and the automatic valve to close via the controller. The dust exhaust pipe is cylindrical in shape. One end of the dust exhaust pipe is fixed to the cylinder and connected to the automatic valve. The other end of the dust exhaust pipe passes through the side wall of the cabin and is connected to the outside. The dust exhaust pipe is rotatably connected to the side wall of the cabin. Air intakes are located at the bottom of the cabin.

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