CN207761881U - A kind of adjustable wind-driven generator - Google Patents

Abstract

The utility model is related to technical field of wind power generation,Especially a kind of adjustable wind-driven generator,Including engine block,Engine block is equipped with pylon,Cabin and wheel hub,Cabin is fixedly connected at the top of pylon,The generator output end of engine room inside is fixedly connected with wheel hub,Nacelle top is fixedly connected with control box close to the side of wheel hub,It is practical that the utility model has the advantages of simple structure,By being provided with the first electromagnet and the second electromagnet,When wind speed is relatively low,Second electromagnet powers off,So that two flabellum group separation,At the same time,First electromagnet is powered,So that lobe numbers become six chips from three-chip type,And symmetrically,Enhance Wind power propelling area,Generator is set to work normally,When wind speed is higher,The operation of two groups of electromagnet is opposite,Flabellum number is become into three pieces from six,Improve hub rotation speed,So that wind-driven generator is constantly in high efficiency generating state.

Description

An adjustable wind generator

technical field

The utility model relates to the technical field of wind power generation, in particular to an adjustable wind power generator.

Background technique

A wind turbine is a power device that converts wind energy into mechanical work, which drives the rotor to rotate, and finally outputs alternating current. Wind turbines are generally composed of components such as wind rotors, generators (including devices), steering devices (tail fins), towers, speed-limiting safety mechanisms, and energy storage devices. The working principle of a wind turbine is relatively simple. The wind rotor rotates under the action of the wind, which converts the kinetic energy of the wind into the mechanical energy of the wind rotor shaft, and the generator rotates to generate electricity under the drive of the wind rotor shaft. In a broad sense, wind energy is also solar energy, so it can also be said that a wind generator is a thermal energy utilization generator that uses the sun as a heat source and the atmosphere as a working medium.

The structure of the fan blades of the existing wind-driven generators is simple and rigid, and the number of fan blades cannot be adjusted according to the needs. In a wind-driven generator, the fewer the blades, the higher the rated speed. The wind resistance is large, and the resistance torque limits the further increase of power generation and speed. Although the energy conversion rate of multi-blades is low, the torque conversion rate is relatively high. Existing wind power generators cannot adjust the number of fan blades, so that the effect of the wind power generator is limited.

Utility model content

The purpose of the utility model is to solve the shortcomings in the prior art, and propose an adjustable wind power generator.

In order to achieve the above object, the utility model adopts the following technical solutions:

Design an adjustable wind power generator, including a generator body, the generator body is provided with a tower, a nacelle and a hub, the top of the tower is fixedly connected to the nacelle, and the output end of the generator inside the nacelle is fixed A wheel hub is connected, a control box is fixedly connected to the side near the wheel hub on the top of the nacelle, a rotational speed sensor is fixedly connected to one side inside the control box, and a controller is fixedly connected to the other side inside the control box, and the outer wall of the wheel hub Three second fan blades are fixedly connected to the upper part, and three first electromagnets and three second electromagnets are fixedly connected to the hub, and the second electromagnets are all corresponding to the positions of the second fan blades, and the hub is covered with A fan blade ring is connected, and the fan blade ring is between the second electromagnet and the second fan blade. Three first fan blades are uniformly arranged on the fan blade ring, and the other end of the hub relative to the nacelle is fixedly connected with a The wind speed sensor, the wind speed sensor, the rotational speed sensor, the first electromagnet and the second electromagnet are all electrically connected to the controller.

Preferably, the first electromagnets and the second electromagnets are alternately arranged on the outer wall of the hub.

Preferably, the fan blade ring is fixedly connected with the first fan blade.

Preferably, the controller is a DG-700 controller.

Preferably, both the first fan blade and the second fan blade are made of extruded FRP.

An adjustable wind power generator proposed by the utility model has the beneficial effect that: by setting the first electromagnet and the second electromagnet, when the wind speed is low, the second electromagnet is powered off, so that the two fan blade groups At the same time, the first electromagnet is energized, so that the number of blades changes from three to six, and they are symmetrical to each other, which increases the wind pushing area and makes the generator work normally. When the wind speed is high, the two sets of electromagnets On the contrary, the number of fan blades is changed from six to three, and the hub speed is increased, so that the wind turbine is always in a state of high-efficiency power generation.

Description of drawings

Fig. 1 is a kind of adjustable wind power generator structure schematic diagram that the utility model proposes;

Fig. 2 is a structural schematic diagram of an adjustable wind power generator proposed by the utility model when the fan blades are closed;

Fig. 3 is a schematic diagram of the structure when the fan blades of the adjustable wind power generator proposed by the present invention are separated;

Fig. 4 is a structural schematic diagram of a fan blade ring of an adjustable wind power generator proposed by the present invention;

Fig. 5 is a side view of an adjustable wind power generator proposed by the utility model;

Fig. 6 is a module connection diagram of an adjustable wind power generator proposed by the utility model.

In the figure: 1. Generator body; 2. Tower; 3. Engine room; 4. Control box; 5. Controller; 6. Speed sensor; 7. Hub; 8. Wind speed sensor; 9. First electromagnet; 10 , the second electromagnet; 11, the first fan blade; 12, the fan blade ring; 13, the second fan blade.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example.

Referring to Figures 1-6, an adjustable wind power generator includes a generator body 1, the generator body 1 is provided with a tower 2, a nacelle 3 and a hub 7, the top of the tower 2 is fixedly connected to the nacelle 3, and the nacelle 3 The inner generator output end is fixedly connected to the hub 7, the side of the top of the nacelle 3 close to the hub 7 is fixedly connected to the control box 4, one side of the control box 4 is fixedly connected to the speed sensor 6, and the other side of the control box 4 is fixedly connected to There is a controller 5, three second fan blades 13 are fixedly connected to the outer wall of the wheel hub 7, three first electromagnets 9 and three second electromagnets 10 are fixedly connected to the wheel hub 7, and the second electromagnets 10 are all connected to the second fan blades. The positions of the blades 13 are corresponding, and the hub 7 is sleeved with a fan blade ring 12, the fan blade ring 12 is between the second electromagnet 10 and the second fan blade 13, and the fan blade ring 12 is evenly provided with three first fan blades 11, The other end of the hub 7 opposite to the nacelle 3 is fixedly connected with a wind speed sensor 8 , and the wind speed sensor 8 , the speed sensor 6 , the first electromagnet 9 and the second electromagnet 10 are all electrically connected to the controller 5 .

The first electromagnet 9 and the second electromagnet 10 are alternately arranged on the outer wall of the hub 7, which is convenient for fixing the first fan blade 11 and the second fan blade 13, and the fan blade ring 12 is fixedly connected with the first fan blade 11, which is convenient for use. The blade ring 12 drives the first blade 11 to rotate, and the controller 5 is a DG-700 type controller 5, which is small in size and high in control accuracy, and is convenient for controlling the first electromagnet 9 and the second electromagnet 10, and the first blade 11 and the second fan blade 13 are all made of extruded fiberglass, which has durability and corrosion resistance, and is durable in use.

Working principle: When in use, the wind sensor 8 and the rotation speed sensor 6 monitor the wind speed and the rotation speed of the hub 7 in real time. When the wind speed is lower than the set value or the rotation speed of the hub 7 is lower than the set value, the wind sensor 8 or the rotation speed sensor 6 transmits the signal to In the controller 5 inside the control box 4, the controller 5 controls the second electromagnet 10 to be powered off, and at the same time, the first electromagnet 9 is powered on, and the first fan blade 11 drives the fan blade ring 12 to rotate under the action of gravity. At this time, the positions of the first fan blade 11 and the second fan blade 13 are staggered. When the first fan blade 11 passes the first electromagnet 9, it is fixed by the first electromagnet 9 under the action of magnetic force, and the first fan blade 11 is fixed by the magnetic force. It is fixed in front of the position of the first electromagnet 9. At this time, the fan blade changes from three pieces to six pieces, increasing its stress area, and improving the power generation efficiency by increasing the wind driving area; when the wind speed is greater than the set value or the hub 7 When the rotation speed is set at a large value, the operation of the second electromagnet 10 is opposite to that of the first electromagnet 9, and the number of blades is changed from six to three, so that more wind passes through the fan blades, thereby increasing the rotation speed of the hub 7 , improve power generation efficiency.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (5)

1. a kind of adjustable wind-driven generator, including engine block (1), which is characterized in that the engine block (1) sets There are pylon (2), cabin (3) and wheel hub (7), cabin (3) is fixedly connected at the top of the pylon (2), the cabin (3) is internal Generator output end be fixedly connected with wheel hub (7), the side at the top of the cabin (3) close to wheel hub (7) is fixedly connected with control Box (4) processed, control box (4) interior side are fixedly connected with speed probe (6), the internal other side of the control box (4) It is fixedly connected with controller (5), is fixedly connected on wheel hub (7) outer wall there are three the second flabellum (13), the wheel hub (7) is solid There are three the first electromagnet (9) and three the second electromagnet (10) for fixed connection, and second electromagnet (10) is fanned with second Leaf (13) position corresponds to, and is socketed with flabellum ring (12) on the wheel hub (7), the flabellum ring (12) the second electromagnet (10) with Between second flabellum (13), three the first flabellums (11) are uniformly provided on the flabellum ring (12), the wheel hub (7) is with respect to cabin (3) the other end is fixedly connected with air velocity transducer (8), the air velocity transducer (8), speed probe (6), the first electromagnet (9) it is electrically connected with controller (5) with the second electromagnet (10).

2. a kind of adjustable wind-driven generator according to claim 1, which is characterized in that first electromagnet (9) It is staggered on the outer wall of wheel hub (7) with the second electromagnet (10).

3. a kind of adjustable wind-driven generator according to claim 1, which is characterized in that the flabellum ring (12) and the One flabellum (11) is fixedly connected.

4. a kind of adjustable wind-driven generator according to claim 1, which is characterized in that the controller (5) is DG- 700 type controllers (5).

5. a kind of adjustable wind-driven generator according to claim 1, which is characterized in that first flabellum (11) and Second flabellum (13) is made of pultrusion type fiberglass.