CN202073711U - Vertical-shaft magnetic suspension wind driven generator having functions of breeze startup and lightning protection - Google Patents

Abstract

A vertical-axis maglev wind generator with light wind starting and lightning protection functions, including a vertical shaft, a disc-shaped casing composed of an upper casing cover, a short axially dimensioned cylindrical casing in the middle, and a lower casing cover, a stator, an outer rotor and A load-bearing flange arranged at the bottom end of the vertical shaft. There is an S-shaped air duct made of more than two semicircular metal sheets with two or four upper and lower sections and openings on the upper and lower sides. The S-shaped air duct is set on the vertical axis; a lightning rod ball is installed on the top of the vertical axis. , The bulbous root of the lightning rod is connected to the whole fan, and it is made into a ground electrode under the ground. Rotating around the vertical axis, the fan goes down as a whole, without friction and resistance between each other. As long as there is a breeze in any wind direction, the fan can be rotated to generate electricity, and the operation is stable, without vibration and noise. When a lightning strike occurs, the lightning rod ball will directly shunt the strong current formed by the lightning strike to the earth, so as to avoid the danger of the wind turbine from being struck by lightning and ensure the normal use of the wind power system.

Description

A Vertical Axis Magnetic Levitation Wind Turbine with Breeze Start and Lightning Protection Functions

technical field

The utility model relates to a generator, in particular to a vertical axis magnetic levitation wind power generator with the functions of breeze starting and lightning protection.

Background technique

The Beaufort wind scale is divided into 0-12 levels according to the wind strength, of which 1-2 levels are called light winds, and the corresponding wind speeds are: light winds are 0.55-1.67m/s, and light winds are 1.94-3.33m/s. The start-up wind speed of the existing vertical axis maglev wind generator is high, and generally requires a wind speed of at least 4m/s to be started in a gentle wind of level 3, and there is also a requirement for the wind direction. In addition, the existing vertical axis maglev wind turbines are not equipped with lightning rod balls, so there is a danger of being struck by lightning.

Contents of the invention

The technical problem to be solved by the utility model is to make up for the defects of the above-mentioned prior art, and to provide a vertical axis maglev wind generator with the functions of light wind start-up and lightning protection.

The technical problems of the utility model are solved by the following technical solutions.

This kind of vertical axis maglev wind generator with breeze start and lightning protection function includes a vertical axis, a disc-shaped casing composed of an upper casing cover, a short axially dimensioned cylindrical casing in the middle and a lower casing cover, a stator, an outer rotor, The load-bearing flange and the gyro-shaped flexible strip-shaped curved blades are arranged at the bottom end of the vertical shaft, the stator is arranged in a disc-shaped housing, the outer rotor is an outer rotor composed of the upper casing cover and the lower casing cover and Interference-fit connection with the vertical shaft, the inner sides of the upper case cover and the lower case cover are respectively provided with outer trapezoidal pole slots on the inner sides of the fan-shaped areas equally divided according to the set number of magnetic poles, and the outer trapezoidal poles A magnetic pole composed of high magnetic energy permanent magnet materials with alternating polarities is embedded in the slot, and a coil is embedded on the surface of the stator. When the fan rotates as a whole, the outer rotor always keeps the suspension without mechanical friction. state, no mechanical wear, the coil does not rotate and cuts the magnetic field lines to generate current, the wind-receiving surface of the flexible strip-shaped curved blade receives the thrust of the wind and starts to rotate, and drives the entire fan to rotate. When the whole fan rotates to a certain speed, it will form a rising force, and at the same time make the rotation of the whole fan stable, and at the same time stabilize the output current and voltage.

The features of this vertical axis maglev wind turbine with breeze start and lightning protection function are:

There is an S-shaped air duct made of more than two semicircular metal sheets with two or four upper and lower sections and openings on both sides. The S-shaped air duct is arranged on the vertical axis, and the wind speed is 0.55-1.67 The breeze of m/s blows into one windward side of the S-shaped air duct, and the whole fan rotates at this time; when the whole fan rotates to the other windward side of the S-shaped air duct, the wind speed running through the entire fan is 0.55~1.67m The /s breeze blows into the other windward side of the S-shaped air duct, and the repeated rotation forms a secondary driving force for the entire fan, which accelerates the operation of the fan and makes it have a wind speed of 0.55-1.67m/s The breeze start function.

There is a lightning rod ball on the top of the vertical shaft, the bulb of the lightning rod is connected to the whole fan, and it is made into a ground electrode under the ground, which is used to avoid the danger of the wind turbine from being struck by lightning and ensure the normal use of the wind power system .

The technical problems of the utility model are solved by the following further technical solutions.

The high magnetic energy permanent magnet material is NdFeB magnetic material, which is an alloy of rare earth neodymium, iron oxide and boron. Also known as magnetic steel.

The cross-section of the strip-shaped curved blade is a shuttle-shaped cross-section, and the windward side, that is, the thickness of the wind-receiving surface of the strip-shaped curved blade is greater than the thickness of both sides, and the cross-sectional area of the windward side is greater than the cross-sectional area of both sides. When the windward side is driven by the wind force, it can easily drive the vertical axis of the generator to rotate in the set direction, effectively utilize the wind force for energy conversion, and make full use of wind resources.

Preferably, the strip-shaped curved blade is an aluminum alloy strip-shaped curved blade with a thin-walled hollow structure.

Preferably, the thin-walled hollow structure is a thin-walled hollow structure provided with reinforcing ribs.

Preferably, the reinforcing rib is a reinforcing rib with a C-shaped cross section.

Preferably, the thickness of the windward side of the strip-shaped curved blade is 1.0-1.2 cm thicker than that of both sides.

The beneficial effect of the utility model compared with the prior art is:

The utility model takes the vertical axis as the center, and the overall rotation forms a similar spherical shape with less resistance, and when it rotates around the vertical axis, the fan is turned downwards as a whole, without friction and resistance between them. As long as there is a breeze with a wind speed of 0.55-1.67m/s in any wind direction, the fan can be rotated to generate electricity, and the operation is stable, without vibration and noise. When a lightning strike occurs, the lightning rod ball will directly shunt the strong current formed by the lightning strike to the earth, so as to avoid the danger of the wind turbine from being struck by lightning and ensure the normal use of the wind power system.

Description of drawings

Fig. 1 is the front view of the specific embodiment of the utility model;

Fig. 2 is a schematic diagram of a disassembled structure of a specific embodiment of the present invention;

Fig. 3 is an enlarged view of the S-shaped air duct in Fig. 2 .

Detailed ways

The utility model will be described below in conjunction with specific embodiments and with reference to the accompanying drawings.

A vertical axis maglev wind generator with breeze starting and lightning protection functions as shown in Figures 1 to 3, comprising a vertical axis 4, an upper casing cover 6, a cylindrical casing 5 with a short axial dimension in the middle, and a lower casing cover 9 It consists of a disk-shaped casing, a stator, an outer rotor, a load-bearing flange 10 arranged at the bottom of the vertical shaft 4, and a gyro-shaped flexible strip-shaped curved blade 2 that rotates around the vertical shaft 4 to form a stress curve without bending moment. The stator is arranged in a disk-shaped housing, and the outer rotor is composed of an upper case cover 6 and a lower case cover 9 and is connected with an interference fit with the vertical shaft 4. The inner surfaces of the upper case cover 6 and the lower case cover 9 follow the set magnetic poles There are outer trapezoidal pole grooves on the inner side of the near outer circumference of the equally divided fan-shaped area, and the outer trapezoidal pole grooves of the upper case cover 6 and the lower case cover 9 are respectively embedded with high magnetic energy neodymium iron boron magnets with alternating polarities. The magnetic poles are made of materials 7 and 8, and the surface plane of the stator is embedded with a coil 11. When the fan rotates as a whole, the outer rotor always maintains a suspension state without mechanical friction and no mechanical wear. The coil 11 does not rotate and cuts the magnetic force line to generate current. It also includes a gyro-shaped flexible strip-shaped curved blade 2 that rotates around the vertical axis 4 to form a moment-free stress curve. The wind-receiving surface of the flexible strip-shaped curved blade 2 receives the thrust of the wind and starts to rotate, and drives the entire fan to rotate. When the whole fan rotates to a certain speed, it will form a rising force, and at the same time make the rotation of the whole fan stable, and at the same time stabilize the output current and voltage. The strip-shaped curved blade 2 is a thin-walled aluminum alloy strip-shaped curved blade with a thin-walled hollow structure with a spinning shuttle shape and a C-shaped cross-section.

There is an S-shaped air duct 3 made of two semicircular metal sheets with upper and lower sections or four sections and openings up and down. The S-shaped air duct 3 is arranged on the vertical axis 4, and the wind speed is 0.55-1.67m/s The breeze blows into a windward side A of the S-shaped air duct 3, and the whole fan rotates at this time; when the whole fan rotates to the other windward side A1 of the S-shaped air duct 3, the wind speed running through the entire fan is 0.55 The breeze of ~1.67m/s blows into the other windward side A1 of the S-shaped air duct 3, and such repeated rotation forms a secondary driving force for the entire fan, which accelerates the operation of the fan and makes it have a wind speed of 0.55 ~1.67m/s breeze start function.

A lightning rod ball 1 is arranged on the top of the vertical shaft 4, and the root of the lightning rod ball 1 is connected to the whole fan, and is made into a ground electrode under the ground to prevent the wind turbine from being struck by lightning and ensure the normal use of the wind power system.

When the wind pushes the flexible strip-shaped curved blade 2 and the S-shaped air cylinder 3, it drives the vertical shaft 4 to rotate. The vertical shaft 4 drives the lightning rod ball 1, the flexible strip-shaped curved blade 2, the S-shaped air cylinder 3, the short axial dimension cylindrical shell 5, the upper shell cover 6 and the magnetic poles formed by the high magnetic energy NdFeB magnetic material 7 to rotate, and the coil 11 and lower shell cover 8 and high magnetic energy NdFeB magnetic material 9 and flange 10 do not operate, and the cutting magnetic lines of force generate electric current. When a lightning strike occurs, the lightning rod ball 1 directly shunts the strong current formed by the lightning strike to the ground, so as to avoid the danger of the wind turbine from being struck by lightning and ensure the normal use of the wind power system.

The above content is a further detailed description of the utility model in combination with specific preferred embodiments, and it cannot be assumed that the specific implementation of the utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the utility model belongs, those who make several equivalent substitutions or obvious modifications without departing from the concept of the utility model, and have the same performance or use, should be deemed to belong to the utility model submitted by the The scope of patent protection determined by the claims.

Claims (7)

1. A vertical axis maglev wind generator with breeze start and lightning protection functions, comprising a vertical axis, a disk-shaped casing composed of an upper casing cover, a cylindrical casing with a short axial dimension in the middle, and a lower casing cover, a stator, an outer The rotor, the load-bearing flange and the gyro-shaped flexible strip-shaped curved blades arranged at the bottom end of the vertical shaft, the stator is arranged in the disc-shaped casing, and the outer rotor is an outer casing composed of the upper casing cover and the lower casing cover. The rotor is connected with the vertical shaft by an interference fit, and the inner surfaces of the upper case cover and the lower case cover are respectively provided with outer trapezoidal pole slots on the inner sides of the fan-shaped areas that are equally divided according to the set number of magnetic poles. The trapezoidal pole slot is embedded with a magnetic pole composed of high magnetic energy permanent magnet materials with alternating polarities, and the surface plane of the stator is embedded with coils, which are characterized in that: There is an S-shaped air duct made of more than two semicircular metal sheets with upper and lower sections or four sections and openings on the upper and lower sides, and the S-shaped air duct is arranged on the vertical axis; A lightning rod ball is arranged on the top of the vertical shaft, and the bulbous root of the lightning rod is connected with the whole fan, and is made into a ground electrode under the ground. 2. The vertical-axis maglev wind-driven generator with breeze starting and lightning protection functions as claimed in claim 1, characterized in that: The high magnetic energy permanent magnet material is NdFeB magnetic material, which is an alloy of rare earth neodymium, iron oxide and boron. 3. The vertical-axis maglev wind-driven generator with breeze starting and lightning protection functions as claimed in claim 1 or 2, characterized in that: The cross-section of the strip-shaped curved blade is a shuttle-shaped cross-section, and the windward side, that is, the thickness of the wind-receiving surface of the strip-shaped curved blade is greater than the thickness of both sides, and the cross-sectional area of the windward side is greater than the cross-sectional area of both sides. 4. The vertical-axis maglev wind-driven generator with breeze starting and lightning protection functions as claimed in claim 3, characterized in that: The strip-shaped curved blade is an aluminum alloy strip-shaped curved blade with a thin-walled hollow structure. 5. The vertical axis maglev wind generator with breeze start and lightning protection function as claimed in claim 4, characterized in that: The thin-walled hollow structure is a thin-walled hollow structure provided with reinforcing ribs. 6. The vertical-axis maglev wind-driven generator with breeze starting and lightning protection functions as claimed in claim 5, characterized in that: The reinforcing rib is a reinforcing rib with a C-shaped cross section. 7. The vertical-axis maglev wind-driven generator with breeze starting and lightning protection functions as claimed in claim 6, characterized in that: The thickness of the windward side of the strip-shaped curved blade is 1.0-1.2 cm thicker than that of both sides.

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