Vertical shaft of wind driven generator

Abstract

The invention relates to the technical field of wind power generation equipment, in particular to a wind driven generator vertical shaft which comprises a supporting stand column, a rotating protection mechanism, a vertical power generation mechanism and a supporting mechanism, the rotating protection mechanism comprises a rotating positioning column in threaded connection to the top of the supporting stand column, and the outer surface of the rotating positioning column is rotationally connected with a rotating shaft. According to the power generation device, through the arrangement of the rotating speed sensor, the current sensor and the emergency brake, the rotating speed sensor can accurately monitor the rotating speed of the rotating shaft in real time and provide key data for follow-up power generation state analysis and equipment regulation and control, and the current sensor can detect the magnitude of current in the power generation process in real time; the power generation efficiency and the equipment operation state can be judged, once data are abnormal, such as the rotating speed is too high or the current is unstable, the emergency brake is rapidly started, the rotating shaft stops rotating, the equipment is prevented from being damaged due to overload or faults, and the safety and stability of equipment operation are greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind power generation equipment, in particular to a vertical shaft of a wind driven generator. BACKGROUND

[0002] The vertical axis wind driven generator is divided into drag type vertical axis wind driven generator and lift type vertical axis wind driven generator according to aerodynamics principle. The drag type vertical axis wind driven generator uses drag type fan blades, such as barrier flat plate type fan blades, wind drum with semi-cylindrical blades, wind cup type blades, etc. The lift type vertical axis wind driven generator, also known as Darrieus wind driven generator, uses lift type fan blades, and the profile of the blades is generally symmetrical wing-shaped, also known as wing-shaped blades.

[0003] The prior art such as the invention disclosed in publication No. CN 205744284 U discloses a vertical axis wind driven generator, which comprises a fixed tube, a rotating shaft is installed on the fixed tube, the rotating shaft can rotate on the fixed tube, a plurality of support devices are installed on the side of the rotating shaft, each support device comprises two support frames, the included angle between the two support frames is a right angle, one end of the support frame is connected with the rotating shaft, and the other end of the support frame is connected with a main fan blade. The number of main fan blades is five or six, and the main fan blade is wing-shaped. The first guide plate and the second guide plate of the present application cooperate with each other, and the curvature of the second guide plate is greater than that of the first guide plate, so that when the wind passes through the main fan blade formed by the first guide plate and the second guide plate, the main fan blade generates an inward force, thereby making the rotating shaft rotate more stably.

[0004] The above technical solution has the following problems in use:

[0005] (1) Insufficient operation state monitoring and safety control: there is a lack of effective real-time operation state monitoring mechanism, and key parameters such as wind speed and power generation current cannot be obtained in time and accurately. When the wind speed suddenly changes or the equipment appears abnormity, it cannot respond quickly, which may lead to equipment damage and even safety accidents;

[0006] (2) Structure stability needs to be improved: the connection structure of the wind wheel and the vertical shaft is difficult to ensure long-term stability in complex wind environment. The torsional force generated by the blades under strong wind will be transmitted to the vertical shaft through the connection structure, causing fatigue damage of the vertical shaft and affecting the service life and power generation efficiency of the equipment.

[0007] In view of the above problems, the present application provides a vertical shaft of a wind driven generator. SUMMARY

[0008] The present application aims to solve the problems of insufficient operation state monitoring and safety control and structure stability in the prior art, and provides a vertical shaft of a wind driven generator.

[0009] In order to achieve the above object, the present application adopts the following technical scheme: A vertical shaft of a wind driven generator, comprising a support column, a rotation protection mechanism, a vertical power generation mechanism and a support mechanism:

[0010] The rotation protection mechanism comprises a rotation positioning column which is screwed to the top of the support column, the outer surface of the rotation positioning column is rotationally connected with a rotation shaft, and the rotation shaft is rotationally connected with the outer surface of the rotation positioning column;

[0011] The rotation protection mechanism comprises a rotation speed sensor and a current sensor, the rotation speed sensor and the current sensor are fixedly connected to the two ends of the outer surface of the rotation shaft;

[0012] The two ends of the rotation shaft are fixedly connected with bearings, the rotation shaft is rotationally connected with the outer surface of the rotation positioning column through the bearings, and the rotation speed sensor and the current sensor are symmetrically arranged on the outer surface of the rotation shaft.

[0013] Further, the top of the rotation positioning column is fixedly connected with an emergency brake, the outer surface of the emergency brake is sleeved with a protective cover, the two sides of the protective cover are screwed with connecting pieces, and the protective cover is screwed with the top of the rotation positioning column through the connecting pieces.

[0014] Further, the vertical power generation mechanism comprises a fixed ring which is fixedly connected to the outer surface of the rotation shaft, the outer surface of the fixed ring is provided with a threaded hole, the outer surface of the fixed ring is screwed with a connecting plate, the connecting plate is screwed with a bolt, and the connecting plate is screwed with the outer surface of the rotation shaft through the bolt.

[0015] Further, the middle part of the outer surface of the connecting plate is fixedly connected with a transverse connecting rod, the outer surface of the connecting plate is fixedly connected with an inclined connecting rod, and the inclined connecting rod is symmetrically arranged on the two sides of the transverse connecting rod.

[0016] Further, the distal ends of the transverse connecting rod and the inclined connecting rod are fixedly connected with a fixed plate, and the transverse connecting rod and the connecting plate are arranged at a quarter distance on the outer surface of the rotation shaft.

[0017] Further, the outer surface of the fixed plate is screwed with a blade, the blades are arranged at a quarter distance on the outer surface of the rotation shaft through the transverse connecting rod, adjacent blades are fixedly connected with an anti-torsion support rod, and the anti-torsion support rod is symmetrically arranged on the two ends of each adjacent blade.

[0018] Further, the support mechanism comprises a flange connecting disc which is fixedly connected to the top of the support column, the two sides of the flange connecting disc are screwed with limit pieces, the rotation positioning column is screwed with the top of the support column through the limit pieces, and the support mechanism comprises a stabilizing block which is fixedly connected to the bottom of the support column.

[0019] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0020] 1. In this invention, by setting up a speed sensor, a current sensor, and an emergency brake, the speed sensor can monitor the rotational speed of the rotating shaft in real time and accurately, providing key data for subsequent power generation status analysis and equipment control. The current sensor can detect the current magnitude during the power generation process in real time, which helps to judge the power generation efficiency and equipment operating status. Once the data is abnormal, such as the speed is too fast or the current is unstable, the emergency brake will be activated quickly to stop the rotating shaft from rotating, avoiding damage to the equipment due to overload or failure, and greatly improving the safety and stability of equipment operation.

[0021] 2. In this invention, by setting up bearings, oblique connecting rods, and anti-torsion support rods, the bearings can reduce the friction between the rotating shaft and the rotating positioning column, ensuring smooth rotation; the oblique connecting rods enhance the connection strength between the connecting plate and the fixed plate, improving the structure's ability to resist complex stresses; and the anti-torsion support rods effectively prevent the blades from twisting under strong winds, ensuring the stability of the wind turbine structure, thereby improving the reliability and service life of the entire vertical axis wind turbine and ensuring stable power generation efficiency. Attached Figure Description

[0022] Figure 1 A three-dimensional structural diagram of the vertical axis of a wind turbine is provided for this invention;

[0023] Figure 2 This invention provides a structural schematic diagram of an emergency brake in the vertical axis of a wind turbine.

[0024] Figure 3 This invention proposes a method for the vertical axis of a wind turbine generator. Figure 2 Enlarged view of point A;

[0025] Figure 4 This invention provides a structural schematic diagram of a bearing in the vertical shaft of a wind turbine.

[0026] Figure 5 This invention provides a structural schematic diagram of an anti-torsion support rod in the vertical axis of a wind turbine.

[0027] Figure 6 This invention proposes a method for the vertical axis of a wind turbine generator. Figure 5 Enlarged diagram of point B.

[0028] Legend:

[0029] 1, support column; 2, rotation protection mechanism; 21, rotation positioning column; 22, rotation shaft; 23, rotation speed sensor; 24, current sensor; 25, bearing; 26, emergency brake; 27, protective cover; 28, connecting piece; 3, vertical power generation mechanism; 31, fixed ring; 32, threaded hole; 33, connecting plate; 34, bolt; 35, transverse connecting rod; 36, inclined connecting rod; 37, fixed plate; 38, blade; 39, anti-torsion support rod; 4, support mechanism; 41, flange connecting disc; 42, limiting piece; 43, stabilizing block. DETAILED DESCRIPTION

[0030] Please refer to Figures 1-6 The present application provides a technical solution: a vertical axis wind turbine, comprising a support column 1, a rotation protection mechanism 2, a vertical power generation mechanism 3 and a support mechanism 4:

[0031] The rotation protection mechanism 2 comprises a rotation positioning column 21 threadedly connected to the top of the support column 1, and the outer surface of the rotation positioning column 21 is rotationally connected with a rotation shaft 22, and the rotation shaft 22 is rotationally connected to the outer surface of the rotation positioning column 21.

[0032] The specific settings and functions of the rotation protection mechanism 2, the vertical power generation mechanism 3 and the support mechanism 4 will be described below.

[0033] In this embodiment, the rotation protection mechanism 2 comprises a rotation speed sensor 23 and a current sensor 24, and the rotation speed sensor 23 and the current sensor 24 are fixedly connected to the two ends of the outer surface of the rotation shaft 22.

[0034] The two ends of the rotation shaft 22 are fixedly connected with a bearing 25, and the rotation shaft 22 is rotationally connected to the outer surface of the rotation positioning column 21 through the bearing 25, and the rotation speed sensor 23 and the current sensor 24 are symmetrically arranged on the outer surface of the rotation shaft 22.

[0035] The above-mentioned components achieve the following effects: the rotation speed sensor 23 monitors the rotation speed of the rotation shaft 22 in real time, transmits data to the control system, and is used to judge the current wind speed condition and power generation efficiency, and the current sensor 24 monitors the output current of the generator, and by analyzing the current change, it can detect whether the power generation system has short circuit, overload and other faults, and the real-time monitoring of the operation state of the power generation system provides data support for intelligent control. When the rotation speed exceeds the safety threshold or the current is abnormal, the control system can take timely measures.

[0036] Specifically, the top of the rotation positioning column 21 is fixedly connected with an emergency brake 26, the outer surface of the emergency brake 26 is sleeved with a protective cover 27, the two sides of the protective cover 27 are threadedly connected with connecting pieces 28, and the protective cover 27 is threadedly connected to the top of the rotation positioning column 21 through the connecting pieces 28.

[0037] The effect achieved by the above-mentioned components is that when the system detects an abnormal situation, the emergency brake 26 is triggered to be powered off, the protective cover 27 prevents impurities such as rain and dust from entering the brake, prolongs the service life of the brake, provides a safety protection mechanism, ensures that the equipment can quickly stop in an emergency, and avoids major accidents.

[0038] Specifically, the vertical power generation mechanism 3 includes a fixed ring 31 fixedly connected to the outer surface of the rotating shaft 22, the outer surface of the fixed ring 31 is provided with a threaded hole 32, the outer surface of the fixed ring 31 is threadedly connected with a connecting plate 33, the connecting plate 33 is threadedly connected with a bolt 34, and the connecting plate 33 is threadedly connected to the outer surface of the rotating shaft 22 through the bolt 34.

[0039] The effect achieved by the above-mentioned components is that the fixed ring 31 serves as a key component for connecting the rotating shaft 22 and the external structure, and the connecting plate 33 transmits the torque to the horizontal connecting rod 35, which is modularly designed for easy installation and maintenance by workers.

[0040] Specifically, the outer surface of the connecting plate 33 is fixedly connected with a horizontal connecting rod 35 in the middle, and the outer surface of the connecting plate 33 is fixedly connected with an inclined connecting rod 36, which is symmetrically arranged on both sides of the horizontal connecting rod 35.

[0041] The effect achieved by the above-mentioned components is that the horizontal connecting rod 35 transmits the torque of the blade 38 to the rotating shaft 22, and the inclined connecting rod 36 enhances the torsional stiffness and stability of the structure, forms a triangular support structure, and improves the uniformity of load distribution.

[0042] Specifically, the distal ends of the horizontal connecting rod 35 and the inclined connecting rod 36 are fixedly connected with a fixed plate 37, and the horizontal connecting rod 35 and the connecting plate 33 are arranged at a quarter of the distance on the outer surface of the rotating shaft 22.

[0043] The effect achieved by the above-mentioned components is that the outer surface of the connecting plate 33 is fixedly connected with the inclined connecting rod 36, which is symmetrically arranged on both sides of the horizontal connecting rod 35, and the inclined connecting rod 36 cooperates with the horizontal connecting rod 35 to enhance the stability of the structure and effectively resist complex stresses generated under the action of wind force.

[0044] Specifically, the outer surface of the fixed plate 37 is threadedly connected with a blade 38, the blade 38 is arranged at a quarter of the distance on the outer surface of the rotating shaft 22 through the horizontal connecting rod 35, adjacent blades 38 are fixedly connected with a torsion-resistant support rod 39, and the torsion-resistant support rod 39 is symmetrically arranged at both ends of each adjacent blade 38.

[0045] The effect achieved by the above-mentioned components is that the anti-torsion support rods 39 are symmetrically arranged at both ends of each adjacent blade 38, and can effectively resist the torsion force generated by the blades 38 under strong wind, preventing the blades 38 from being damaged due to torsion, and further improving the stability and reliability of the wind wheel structure.

[0046] Specifically, the support mechanism 4 includes a flange connecting disc 41 fixedly connected to the top of the support column 1, and a limiting piece 42 threadedly connected to both sides of the flange connecting disc 41, and the rotating positioning column 21 is threadedly connected to the top of the support column 1 through the limiting piece 42, and the support mechanism 4 includes a stabilizing block 43 fixedly connected to the bottom of the support column 1.

[0047] The effect achieved by the above-mentioned components is that the support mechanism 4 further includes the stabilizing block 43 fixedly connected to the bottom of the support column 1, which can increase the contact area of the support column 1 with the ground, improve the stability of the entire wind turbine, and effectively prevent the equipment from toppling over, especially in harsh environments such as strong winds.

[0048] Working principle: When the wind blows towards the blades 38, the blades 38 generate lift and drag, driving the rotating shaft 22 to rotate around the rotating positioning column 21, and the rotational speed sensor 23 monitors the rotational speed of the rotating shaft 22 in real time and transmits the data to the control system, and the current sensor 24 synchronously monitors the output current of the generator.

[0049] When the wind speed is within the rated range, the control system adjusts the blades 38 to maximize the power generation efficiency, and when the wind speed exceeds the safety threshold, the emergency brake 26 is triggered to rapidly brake the rotating shaft 22, protecting the safety of the equipment.

[0050] The support mechanism 4 fixes the entire device to the ground foundation through the flange connecting disc 41 and the stabilizing block 43, ensuring stability under various wind conditions, and the triangular support structure and anti-torsion support rods 39 of the vertical power generation mechanism 3 effectively resist the vibration and torque caused by the wind, ensuring the smoothness and reliability of the power generation process.

Claims

1. A vertical axis wind turbine, comprising a support column (1), a rotation protection mechanism (2), a vertical power generation mechanism (3) and a support mechanism (4), characterized in that: the rotation protection mechanism (2) comprises a rotation positioning column (21) screwed to the top of the support column (1), the outer surface of the rotation positioning column (21) is rotationally connected with a rotation shaft (22), and the rotation shaft (22) is rotationally connected with the outer surface of the rotation positioning column (21); the rotation protection mechanism (2) comprises a rotation speed sensor (23) and a current sensor (24), which are fixedly connected to the two ends of the outer surface of the rotation shaft (22); the two ends of the rotation shaft (22) are fixedly connected with bearings (25), the rotation shaft (22) is rotationally connected with the outer surface of the rotation positioning column (21) through the bearings (25), and the rotation speed sensor (23) and the current sensor (24) are symmetrically arranged on the outer surface of the rotation shaft (22).

2. A vertical axis wind generator according to claim 1, wherein: the top of the rotation positioning column (21) is fixedly connected with an emergency brake (26), the outer surface of the emergency brake (26) is sleeved with a protective cover (27), the two sides of the protective cover (27) are screwed with connecting pieces (28), and the protective cover (27) is screwed to the top of the rotation positioning column (21) through the connecting pieces (28).

3. A vertical axis wind generator according to claim 1, wherein: the vertical power generation mechanism (3) comprises a fixed ring (31) fixedly connected to the outer surface of the rotation shaft (22), the outer surface of the fixed ring (31) is provided with a threaded hole (32), the outer surface of the fixed ring (31) is screwed with a connecting plate (33), the connecting plate (33) is screwed with a bolt (34), and the connecting plate (33) is screwed to the outer surface of the rotation shaft (22) through the bolt (34).

4. A vertical axis wind generator according to claim 3, wherein: the middle of the outer surface of the connecting plate (33) is fixedly connected with a transverse connecting rod (35), the outer surface of the connecting plate (33) is fixedly connected with an inclined connecting rod (36), and the inclined connecting rod (36) is symmetrically arranged on the two sides of the transverse connecting rod (35).

5. A vertical axis wind generator according to claim 4 wherein: the distal ends of the transverse connecting rod (35) and the inclined connecting rod (36) are fixedly connected with a fixed plate (37), and the transverse connecting rod (35) and the connecting plate (33) are arranged at a quarter of the distance on the outer surface of the rotation shaft (22).

6. A vertical axis wind generator according to claim 5 wherein: the outer surface of the fixed plate (37) is screwed with a blade (38), the blades (38) are arranged at a quarter of the distance on the outer surface of the rotation shaft (22) through the transverse connecting rod (35), adjacent blades (38) are fixedly connected with a torsion-resistant support rod (39), and the torsion-resistant support rod (39) is symmetrically arranged at the two ends of each adjacent blade (38).

7. A vertical axis wind generator according to claim 1, wherein: The support mechanism (4) comprises a flange connecting disc (41) fixedly connected to the top of the support column (1), the two sides of the flange connecting disc (41) are threadedly connected with limiters (42), the rotating positioning column (21) is threadedly connected to the top of the support column (1) through the limiters (42), and the support mechanism (4) comprises a stabilizing block (43) fixedly connected to the bottom of the support column (1).

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