CN216008753U

CN216008753U - Slide rail type multistage vertical wind driven generator

Info

Publication number: CN216008753U
Application number: CN202121697651.2U
Authority: CN
Inventors: 高宇
Original assignee: Individual
Current assignee: Sichuan Zhongneng Yufeng New Energy Co ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-03-11
Anticipated expiration: 2031-07-26

Abstract

The utility model discloses a slide rail type multistage vertical wind driven generator which comprises an impeller shaft, an annular rail, a rail supporting rod and a supporting arm, wherein the supporting arm is rotatably connected with the impeller shaft, the rail supporting rod is used for supporting the annular rail, blades are arranged on the supporting arm, the blades are used for receiving wind energy and converting the wind energy into mechanical energy of the generator, the supporting arm is supported on the annular rail through a transmission mechanism, the automatic braking device is arranged at a position, corresponding to the annular rail, on the supporting arm, and when the rotating speed of the supporting arm around the impeller shaft exceeds a set value, the automatic braking device stops the supporting arm from rotating or reduces the rotating speed of the supporting arm to be below the set value. The utility model is used for realizing the automatic braking of the vertical axis wind driven generator, reducing the running speed of the vertical axis wind driven generator and avoiding the risk of overturning, and meanwhile, the braking device has simple structure, low cost and easy installation.

Description

Slide rail type multistage vertical wind driven generator

Technical Field

The utility model relates to the technical field of wind power generation, in particular to a slide rail type multistage vertical wind driven generator.

Background

The available resources on the earth are gradually reduced, and the environmental protection consciousness is gradually increased today, and the utilization and development of renewable energy are gradually paid more attention from various countries due to the characteristics of clean renewable energy and gas emission in a low-temperature chamber. Among them, solar power generation and wind power generation are most important.

Wind power generators are classified by the direction of the rotation axis of their impellers, and have two major types, horizontal axis and vertical axis. At present, horizontal shaft type wind driven generators are in the mainstream form in domestic and foreign markets. However, the horizontal axis wind turbine has a great disadvantage. Such as: the horizontal axis type wind driven generator is high in installation height, large in occupied space, poor in wind resistance, large in noise during operation and high in starting wind speed (generally more than 3.5 m/s), and a yaw system facing the wind is required. Compared with a horizontal shaft type wind driven generator, the vertical shaft type wind driven generator can adapt to any wind direction, is lower in installation height, can be arranged in a connected mode, and occupies small space; in addition, the installation center of gravity of heavy components (such as a generator and a gearbox) is low, and the overall stability and wind resistance are good; the noise generated by the generator is low when the wind turbine runs, and the starting wind speed is low (about 2 m/s). Therefore, in recent years, vertical axis wind turbines have been receiving more and more attention.

On some islands, due to the fact that wind power is too large, the rotating speed of a supporting force arm for supporting the blades is too high, the blades rotate at high speed to generate upward lift force easily, and therefore the whole vertical axis generator is prone to causing the risk of overturning.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a slide rail type multistage vertical wind driven generator, which is used for realizing automatic braking of the vertical axis wind driven generator, reducing the running speed of the vertical axis wind driven generator and avoiding the risk of overturning.

In order to solve the technical problem, the utility model adopts the following scheme:

the utility model provides a multistage perpendicular aerogenerator of slide rail formula, includes impeller shaft, looped rail, track bracing piece and the support arm of being connected with the impeller shaft, and the track bracing piece is used for supporting looped rail is equipped with the blade on the support arm, and the blade is used for receiving wind energy and can converts the mechanical energy of wind energy into the generator, and the support arm passes through drive mechanism and supports on looped rail, still includes automatic brake equipment, and automatic brake equipment sets up the position corresponding with looped rail on the support arm, and when the support arm exceeded the setting value around impeller shaft slew velocity, automatic brake equipment made support arm stall or reduced its rotational speed to below the setting value. This scheme is through the support arm when its rotational speed surpasss the setting value, triggers brake equipment and carries out the deceleration or stall to the support arm automatically.

Preferably, the automatic brake device comprises a brake pad arranged below the annular track, the brake pad is fixedly connected with the supporting arm through a connecting rod, and when the rotating speed of the supporting arm exceeds a set value, the brake pad is contacted with the bottom surface of the annular track. Experience the wind energy through the blade, when driving the support arm and rotating around the impeller shaft, if the rotational speed of support arm is too fast, can produce a lift, and then make brake block and circular orbit bottom surface contact, realize aerogenerator's automatic brake through the frictional resistance between brake block and the circular orbit like this, avoid taking place the risk of toppling, the simple structure of brake block simultaneously, easily change, cost low cost for whole power generation facility's braking system's cost reduction.

Preferably, a first gap is formed between the top surface of the brake pad and the bottom surface of the annular track, and the first gap is 5-8 cm. The setting range of the first gap is related to the setting value of the rotating speed of the supporting arm, when the rotating speed of the supporting arm is lower than the setting value, the brake pad is not contacted with the bottom surface of the circular track, the supporting arm rotates normally, the generator generates electricity normally, and when the supporting arm exceeds the setting value, the generated lift force enables the brake pad to be contacted with the bottom surface of the circular track to form friction braking.

Preferably, a second gap is formed between the connecting rod and the side wall of the annular track, and the second gap is 3-5 cm. The connecting rod can avoid the brake block to break away from with the circular orbit when carrying out friction braking to the support arm, and when the connecting rod contacted with the circular orbit side simultaneously, can also further increase the rotation resistance of support arm, reduce the time of braking.

Preferably, the brake pad is made of wear-resistant alloy or high polymer material, or the surface of the brake pad is provided with a wear-resistant alloy coating or a high polymer material coating. The wear resistance of the brake pad is enhanced, the service life of the brake pad is prolonged, and the replacement cost is saved.

Preferably, the bottom surface of the annular track is a rough surface. The friction force between the annular track and the brake pad is increased, so that the brake effect of the brake pad is better during braking.

Preferably, one end of the brake pad, which is far away from the connecting rod, is provided with a limiting plate, a third gap is formed between the limiting plate and the side face of the annular track, and the third gap is 3-5 cm. The limiting plate can avoid the brake block to break away from with the circular orbit when carrying out friction braking to the support arm, and when the support arm instantaneous speed of rotation exceeded the setting value too much simultaneously for when limiting plate and circular orbit side contacted, the rotational resistance of support arm can also further be increased, the effect of instantaneous braking was realized.

Preferably, the transmission mechanism is a guide wheel, and the guide wheel is rotatably connected with the end part of the support arm far away from the impeller shaft; or the transmission mechanism is a combination of a guide wheel and a generator, the generator is fixed at the end part of the support arm far away from the impeller shaft, a rotor of the generator is fixedly connected with the guide wheel, and the guide wheel is placed on the annular track. The guide pulley makes the support arm more smooth and easy when rotating, and the generating effect of this device is better.

Preferably, the support arms are provided with a plurality of blades, the support arms are radially distributed on the circumference of the impeller shaft, and each support arm is provided with a plurality of blades along the length direction. The blades in the device can feel wind energy in all directions due to the arrangement of the supporting arms, and the efficiency of power generation is maximized.

Preferably, the annular rails are provided with a plurality of layers, the plurality of layers of annular rails are vertically distributed at intervals, and the centers of the plurality of layers of annular rails are located on the same vertical axis. The coaxiality of the multilayer annular tracks is ensured, so that the whole stability of the device is better in the rotating process of the supporting arm of the power generation device.

The utility model has the following beneficial effects:

1. this device experiences the wind energy through the blade, when driving the support arm and rotating around the impeller shaft, if the rotational speed of support arm is too fast until exceeding the setting value, can produce a lift, and then make brake block and circular orbit bottom surface contact, realize aerogenerator's automatic brake through the frictional resistance between brake block and the circular orbit like this, avoid taking place the risk of toppling, the simple structure of brake block simultaneously, easy the change, cost low cost, make whole power generation facility's braking system's cost reduction.

2. The limiting plate can avoid the brake block to break away from with the circular orbit when carrying out friction braking to the support arm, and when the support arm instantaneous speed of rotation exceeded the setting value too much simultaneously for when limiting plate and circular orbit side contacted, the rotational resistance of support arm can also further be increased, the effect of instantaneous braking was realized.

3. The bottom surface of the annular track is a rough surface, so that the friction force between the annular track and the brake pad is increased, and the brake effect of the brake pad is better when braking.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a slide rail type multistage vertical generator;

FIG. 3 is a schematic structural view of a cross-sectional circular track;

FIG. 4 is a top view of the generator and rail combination;

fig. 5 is a perspective view of the guide wheel and the endless track.

Reference numerals: 1-impeller shaft, 2-circular track, 3-track support rod, 4-support arm, 5-blade, 6-guide wheel, 7-brake block, 8-connecting rod, 9-limiting plate, 10-first gap, 11-second gap, 12-third gap, 13-transmission case and 14-generator.

Detailed Description

The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "open," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in fig. 1-3, a slide rail type multistage vertical wind power generator comprises an impeller shaft 1, an annular rail 2, a rail support rod 3 and a support arm 4 connected with the impeller shaft 1, wherein the annular rail 2 is provided with a plurality of layers, the plurality of layers of annular rails 2 are vertically distributed at intervals, the centers of the plurality of layers of annular rails 2 are positioned on the same vertical axis, the impeller shaft 1 is positioned in the middle of the plurality of layers of annular rails 2 and is overlapped with the vertical axis, the impeller shafts 1 are formed by connecting a plurality of transmission boxes 13, generators 14 are arranged on two sides of the transmission boxes 13, the transmission boxes 13 are driven by the rotation of the impeller shafts 1 to drive the generators 14 to generate electricity, the lowermost impeller shaft 1 is rotatably connected with a base, the rail support rod 3 is used for supporting the annular rails 2, the support arms 4 are provided with a plurality of support arms 4, the plurality of support arms 4 are radially distributed on the circumference of the impeller shaft 1, each support arm 4 is provided with a plurality of blades 5 along the length direction thereof, the blades 5 are used for receiving wind energy and converting the wind energy into mechanical energy of the generator 14, the blades 5 in the device can feel the wind energy in all directions due to the arrangement of the plurality of supporting arms 4, the generating efficiency is maximized, the supporting arms 4 are supported on the annular rails 2 through the transmission mechanism, and the directions of the blades 5 on the two adjacent layers of annular rails 2 for absorbing the wind energy are opposite, so that the centrifugal force generated by the mutual rotation of the upper impeller shaft 1 and the lower impeller shaft 1 on the impeller shaft 1 can be counteracted, the impeller shaft 1 is further protected from being damaged, and the service life of the generating device is prolonged; the device is also provided with an automatic brake device, the automatic brake device is arranged on the support arm 4 and corresponds to the annular track 2, when the rotation speed of the support arm 4 around the impeller shaft 1 exceeds a set value, the automatic brake device enables the support arm 4 to stop rotating or reduce the rotation speed of the support arm 4 to be below the set value, the automatic brake device comprises a brake pad 7 arranged below the annular track 2, the brake pad 7 is fixedly connected with the support arm 4 through a connecting rod 8, the support rod is used for driving the brake pad 7 and the support arm 4 to synchronously rotate, when the rotation speed of the support arm 4 exceeds the set value, the lift force generated by the support arm 4 enables the brake pad 7 to be in contact with the bottom surface of the annular track 2, so that the automatic brake of the wind driven generator 14 is realized through the friction resistance between the brake pad 7 and the annular track 2, the risk of overturning is avoided, the kinetic energy of the automatic brake pad 7 comes from the blades 5, The lifting force and the centrifugal force generated by the high-speed rotation of the supporting arm 4 do not need to drive a brake system to brake like other wind driven generators by external electric energy, and meanwhile, the brake pad 7 is simple in structure, easy to replace and low in manufacturing cost, so that the cost of the brake system of the whole power generation device is reduced.

Example 2

As shown in fig. 1, a first gap 10 is formed between the top surface of the brake pad 7 and the bottom surface of the circular track 2, and the first gap 10 is 5-8 cm. The set range of the first gap 10 is related to the set value of the rotating speed of the supporting arm 4, when the rotating speed of the supporting arm 4 is lower than the set value, the brake pad 7 is not in contact with the bottom surface of the circular track 2, the supporting arm 4 rotates normally, the generator 14 generates electricity normally, when the supporting arm 4 exceeds the set value, the generated lift force enables the brake pad 7 to be in contact with the bottom surface of the circular track 2, friction braking is formed, the more the set value is exceeded, the tighter the brake pad 7 is attached to the bottom surface of the circular track 2, the larger the generated friction force rain is, and the better the braking effect is.

A second gap 11 is formed between the connecting rod 8 and the side wall of the annular track 2, and the second gap 11 is 3-5 cm. The connecting rod 8 can avoid the brake block 7 to break away from with the circular orbit 2 when carrying out friction braking to support arm 4, and when connecting rod 8 and circular orbit 2 side contact, can also further increase the rotational resistance of support arm 4 simultaneously, reduce the time of braking.

The brake pad 7 is made of wear-resistant alloy or high polymer material, or a wear-resistant alloy coating or a high polymer material coating is arranged on the surface of the brake pad 7. The wear resistance of the brake pad 7 is enhanced, the service life of the brake pad 7 is prolonged, and the replacement cost is saved.

Example 3

The bottom surface of the annular track 2 is a rough surface which can be in a wave shape, the maximum wave crest is most suitable to be not more than 0.5mm, and the friction force between the annular track 2 and the brake pad 7 is increased, so that the braking effect of the brake pad 7 is better during braking.

Example 4

As shown in fig. 1 and 3, a limiting plate 9 is disposed at one end of the brake pad 7 away from the connecting rod 8, a third gap 12 is formed between the limiting plate 9 and the side surface of the circular track 2, the third gap 12 is 3-5cm, the limiting plate 9 may also be made of a wear-resistant material, and the limiting plate 9 and the brake pad 7 are integrally disposed, the limiting plate 9 may be disposed at the inner side or the outer side of the circular track 2 and is opposite to the connecting rod 8, the limiting plate 9 can prevent the brake pad 7 from being separated from the circular track 2 when the support arm 4 is subjected to friction braking, and when the instantaneous speed of rotation of the support arm 4 exceeds a set value too much, the impeller shaft 1 is shaken and centrifugally driven by wind due to the installation gaps and wind force of the parts, the support arm 4 has a certain transverse displacement, so that the limiting plate 9 contacts the side surface of the circular track 2, and the rotation resistance of the support arm 4 can be further increased, the function of instantaneous braking is realized.

Example 5

As shown in fig. 4 and 5, the transmission mechanism is a guide wheel 6, and the guide wheel 6 is rotatably connected with the end part of the support arm 4 far away from the impeller shaft 1; or the transmission mechanism is a combination of the guide wheel 6 and the generator 14, the generator 14 is fixed at the end part of the supporting arm 4 far away from the impeller shaft 1, the rotor of the generator 14 is fixedly connected with the guide wheel 6, and the guide wheel 6 is placed on the annular track 2. The guide wheel 6 enables the supporting arm 4 to rotate more smoothly, and the power generation effect of the device is better.

The braking principle of the utility model is as follows: in practical power generation application, the blades 5 sense wind energy and drive the supporting arms 4 to rotate around the impeller shafts 1, meanwhile, the supporting arms 4 rotate on the annular rails 2 through the guide wheels 6, rotors of the generators 14 on the impeller shafts 1 and the supporting arms 4 are driven to generate power, when the rotating speed of the supporting arms 4 exceeds a preset value due to overlarge wind speed, the supporting arms 4 generate an upward lifting force under the action of the blades 5, the brake pads 7 are driven to be in contact with the bottom surfaces of the annular rails 2 through the connecting rods 8, sliding friction force is generated between the annular rails 2 and the brake pads 7, and then the automatic braking function of the supporting arms 4 is achieved.

The foregoing is only a preferred embodiment of the present invention, and the present invention is not limited thereto in any way, and any simple modification, equivalent replacement and improvement made to the above embodiment within the spirit and principle of the present invention still fall within the protection scope of the present invention.

Claims

1. A slide rail type multistage vertical wind driven generator comprises an impeller shaft (1), an annular track (2), a track supporting rod (3) and a supporting arm (4) connected with the impeller shaft (1), wherein the track supporting rod (3) is used for supporting the annular track (2), a blade (5) is arranged on the supporting arm (4), the blade (5) is used for receiving wind energy and converting the wind energy into mechanical energy of a generator (14), the supporting arm (4) is supported on the annular track (2) through a transmission mechanism, it is characterized by also comprising an automatic brake device which is arranged on the supporting arm (4) at a position corresponding to the annular track (2), when the rotating speed of the supporting arm (4) around the impeller shaft (1) exceeds a set value, the automatic brake device stops the rotation of the supporting arm (4) or reduces the rotating speed of the supporting arm to be below a set value.

2. The sliding rail type multistage vertical wind power generator according to claim 1, wherein the automatic braking device comprises a brake pad (7) arranged below the circular rail (2), the brake pad (7) is fixedly connected with the supporting arm (4) through a connecting rod (8), and when the rotating speed of the supporting arm (4) exceeds a set value, the brake pad (7) is contacted with the bottom surface of the circular rail (2).

3. The sliding rail type multistage vertical wind power generator according to claim 2, wherein a first gap (10) is formed between the top surface of the brake pad (7) and the bottom surface of the annular rail (2), and the first gap (10) is 5-8 cm.

4. The sliding rail type multistage vertical wind power generator according to claim 2, wherein a second gap (11) is formed between the connecting rod (8) and the side wall of the annular rail (2), and the second gap (11) is 3-5 cm.

5. The sliding rail type multistage vertical wind driven generator according to claim 2, wherein the brake pad (7) is made of wear-resistant alloy or polymer material, or a wear-resistant alloy coating or polymer material coating is arranged on the surface of the brake pad (7).

6. The sliding rail type multistage vertical wind power generator according to claim 1, wherein the bottom surface of the circular rail (2) is rough.

7. The slide rail type multistage vertical wind driven generator according to claim 2, wherein a limiting plate (9) is arranged at one end of the brake pad (7) far away from the connecting rod (8), a third gap (12) is formed between the limiting plate (9) and the side face of the circular rail (2), and the third gap (12) is 3-5 cm.

8. The slide rail type multistage vertical wind power generator as claimed in claim 1, wherein the transmission mechanism is a guide wheel (6), and the guide wheel (6) is rotatably connected with the end part of the supporting arm (4) far away from the impeller shaft (1); or the transmission mechanism is a combination of the guide wheel (6) and the generator (14), the generator (14) is fixed at the end part of the supporting arm (4) far away from the impeller shaft (1), the rotor of the generator (14) is fixedly connected with the guide wheel (6), and the guide wheel (6) is placed on the annular track (2).

9. The sliding rail type multistage vertical wind power generator according to claim 1, wherein the supporting arms (4) are provided in plurality, the supporting arms (4) are distributed radially in the circumferential direction of the impeller shaft (1), and each supporting arm (4) is provided with a plurality of blades (5) along the length direction thereof.

10. The sliding rail type multistage vertical wind power generator according to claim 1, characterized in that the annular rails (2) are provided with a plurality of layers, the plurality of layers of annular rails (2) are vertically distributed at intervals, and the centers of the plurality of layers of annular rails (2) are positioned on the same vertical axis.