A control instrument for detecting wind power in wind power generation

Abstract

The present invention relates to the field of wind power generation detection technology, and specifically, to a control instrument for wind power generation detection of wind force. It includes a base, a support rod is rotatably connected to the base, a fixed plate is fixedly connected inside the support rod, four groups of detection mechanisms for detecting wind force are arranged on the fixed plate, and a driving mechanism and a protective mechanism are also arranged on the fixed plate; the detection mechanism is driven by the driving mechanism to adapt and adjust the length extended to the outside according to different wind speed requirements. The present invention drives the blades to move through the driving mechanism. Under high wind speed conditions, the length of the blades extending to the outside of the support rod is appropriately shortened, so that the wind force received by the blades is relatively reduced, thereby reducing the rotation speed of the blades to keep it within a reasonable range, and then making the measurement of the blades at high wind speeds more accurate and reliable; at low wind speeds, the length extending to the outside of the support rod is appropriately increased, so that the blades are easier to rotate at lower wind speeds.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation detection, in particular to a control instrument for detecting wind power in wind power generation. Background Art

[0002] Wind power generation refers to the conversion of wind kinetic energy into electrical energy. Wind energy is a clean, pollution-free, renewable energy source that has been used by people for a long time, mainly through windmills to pump water, grind flour, etc. People are interested in how to use wind to generate electricity. Using wind power to generate electricity is very environmentally friendly and has huge wind energy reserves, so it is increasingly valued by countries around the world. Wind speed is one of the key factors that determine the output power of wind turbines. Wind speed is monitored in real time through wind detection instruments, and the data is fed back to the control system. When the wind speed is between the cut-in wind speed (the minimum wind speed at which the wind turbine starts to generate electricity) and the rated wind speed, the control system adjusts the pitch angle of the wind turbine blades based on the data from the wind detection instrument to keep the wind turbine at the optimal tip speed ratio. Therefore, at the optimal tip speed ratio, the wind energy utilization coefficient is the highest, and the wind turbine can convert wind energy into electrical energy to the maximum extent, thereby improving power generation efficiency.

[0003] The existing wind force detection control instrument is mainly composed of a wind cup, a rotating shaft and a sensor. The wind cup is generally installed on the rotating shaft. However, in the detection of different environments, for example, in a high wind speed environment, the wind cup of the wind force detection instrument cannot adjust the length to adapt to the wind force change, which may easily cause the wind cup to over-speed due to excessive wind force. When the wind cup speed exceeds the normal range, the wind speed value calculated according to the conventional conversion formula may produce a large error, thereby failing to accurately reflect the actual wind speed, reducing the measurement accuracy;

[0004] In addition, wind detection instruments are exposed to the outside world for a long time. Under severe weather conditions such as strong winds, heavy rains, and hail, the instruments are susceptible to impact, which may cause the instrument components to deform, thereby affecting the subsequent normal operation of the instrument. In view of this, we propose a control instrument for wind power generation to detect wind power. Summary of the invention

[0005] The object of the present invention is to provide a control instrument for detecting wind force in wind power generation, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides a control instrument for detecting wind force in wind power generation, comprising a base, a support rod is rotatably connected to the base, a fixing plate is fixedly connected inside the support rod, four sets of detection mechanisms for detecting wind force are arranged on the fixing plate, and a driving mechanism and a protection mechanism are also arranged on the fixing plate;

[0007] The detection mechanism is driven by a driving mechanism to adapt and adjust the length extended to the outside according to different wind speed requirements. When the detection mechanism moves to the outside of the support pole, the detection mechanism and the protection mechanism form a triangular bracket shape to provide support for the base. When the detection mechanism is located inside the support pole, the protection mechanism is used for protection.

[0008] As a further improvement of the technical solution, one group of the detection mechanisms includes a moving rod slidably connected to a fixed plate, and a blade is fixedly connected to the moving rod.

[0009] As a further improvement of the present technical solution, the driving mechanism includes at least a screw rod rotatably connected to a fixed plate, a micro motor is fixedly installed at the inner bottom of the support rod, and the output end of the micro motor passes through the fixed plate and is fixedly connected to one side of the screw rod, and a moving block is screwed on the screw rod.

[0010] As a further improvement of the technical solution, a plurality of rotating rods are rotatably connected to the moving block, and the sides of the plurality of rotating rods away from the moving block are respectively rotatably connected to adjacent blades.

[0011] As a further improvement of the present technical solution, the protective mechanism comprises at least a protective plate slidably connected to the outer wall of the support rod, and two connecting rods are rotatably connected to the protective plate, and the two connecting rods are rotatably connected to the two sides of the blade at the sides away from the protective plate.

[0012] As a further improvement of the technical solution, a movable plate is slidably connected inside the protective plate, a return spring is fixedly connected to the inner wall of the protective plate, and the side of the return spring away from the protective plate is fixedly connected to the inner wall of the movable plate.

[0013] As a further improvement of the technical solution, the protection mechanisms are provided in multiple groups, and pairs of protection mechanisms are symmetrically arranged on the upper and lower sides directly above the blades.

[0014] As a further improvement of the technical solution, a plurality of positioning grooves are provided on the outer wall of the support rod, positioning blocks are slidably connected in each of the positioning grooves, and a side of the positioning block away from the positioning groove is slidably connected to an adjacent protective plate.

[0015] As a further improvement of the technical solution, a plurality of sliding grooves are provided on the fixed plate, and sliders are slidably connected in the sliding grooves, and a side of the plurality of sliders away from the sliding grooves is fixedly connected to an adjacent moving rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the control instrument for wind power generation and wind force detection, the blades are driven to move by the driving mechanism. Under high wind speed conditions, the length of the blades extending outside the support rod is appropriately shortened, so that the wind force received by the blades is relatively reduced, thereby reducing the rotation speed of the blades to keep it within a reasonable range, thereby making the measurement of the blades under high wind speed more accurate and reliable;

[0018] When the wind speed is low, the length extending to the outside of the support rod is appropriately increased, so that the blades are easier to rotate at lower wind speeds, thereby improving the use effect of the device.

[0019] 2. In the control instrument for wind power generation to detect wind force, when the blade moves, the protective plate is driven to move on the outer wall of the support rod. When the blade is located outside the support rod, a triangular bracket is formed between the connecting rod, the blade and the support rod, thereby improving the overall anti-deformation ability. When the blade rotates, the triangular bracket structure can effectively prevent the blade from being displaced or loosened due to vibration caused by rotation or external force impact, thereby further ensuring the accuracy of the detection mechanism during measurement;

[0020] When the blades are retracted into the support rod, the protective plate is driven to cover the outlet end of the support rod, thereby protecting the blades and internal parts of the support rod. When the device is not in use or in bad weather such as snowing, impurities such as dust and snow are prevented from entering the inside of the support rod, avoiding affecting the normal operation of the blades and internal parts of the support rod, thereby improving the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure assembly of the present invention;

[0022] Figure 2 It is a schematic cross-sectional view of the whole of the present invention;

[0023] Figure 3 It is a cross-sectional schematic diagram of a support rod of the present invention;

[0024] Figure 4 A half-section schematic diagram of a support rod of the present invention;

[0025] Figure 5 It is a side cross-sectional schematic diagram of a support rod of the present invention;

[0026] Figure 6 It is an enlarged schematic diagram of point A of the present invention;

[0027] Figure 7 It is a plane view of the detection mechanism of the present invention in an extended state;

[0028] Figure 8 It is a plan view of the detection mechanism of the present invention in the storage state.

[0029] The meaning of each number in the figure is:

[0030] 100, base; 110, support rod; 111, fixing plate; 112, slider;

[0031] 200, detection mechanism; 210, moving rod; 211, blade;

[0032] 300, driving mechanism; 310, screw rod; 311, micro motor; 312, moving block; 313, rotating rod

[0033] 400, protection mechanism; 410, protection plate; 411, movable plate; 412, return spring; 420, connecting rod; 430, positioning block. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-Figure 8 As shown, this embodiment provides a control instrument for detecting wind force in wind power generation, including a base 100, a support rod 110 is rotatably connected to the base 100, a fixing plate 111 is fixedly connected inside the support rod 110, four sets of detection mechanisms 200 for detecting wind force are arranged on the fixing plate 111, and a driving mechanism 300 and a protection mechanism 400 are also arranged on the fixing plate 111. When the detection mechanism 200 rotates, the support rod 110 is driven to rotate;

[0036] The detection mechanism 200 is driven by the driving mechanism 300 to adapt and adjust the length of the extension to the outside according to different wind speed requirements. When the detection mechanism 200 moves to the outside of the support rod 110, the detection mechanism 200 and the protection mechanism 400 form a triangular bracket, which can provide support for the detection mechanism 200, and effectively prevent the detection mechanism 200 from being displaced or loosened due to vibration caused by rotation or external force impact, thereby further ensuring the accuracy of the detection mechanism 200 during measurement. When the detection mechanism 200 is located inside the support rod 110, the protection mechanism 400 is used for protection, so that when the detection mechanism 200 is not in use, the detection mechanism 200 is retracted into the support rod 110, and then the outlet end of the support rod 110 is blocked by the protection mechanism 400, which can prevent impurities such as dust or snow from entering the inside of the support rod 110, avoid affecting the normal operation of the detection mechanism 200 and the internal parts of the support rod 110, thereby improving the service life of the detection mechanism 200.

[0037] The present invention takes into account that if the wind cup of the existing wind force detection control instrument cannot adjust its length to adapt to the wind force change in a high wind speed environment, it is easy to cause the wind cup to over-rotate due to excessive wind force. When the wind cup rotation speed exceeds the normal range, the wind speed value calculated according to the conventional conversion formula may produce a large error, thereby failing to accurately reflect the actual wind speed, reducing the measurement accuracy; therefore, a detection mechanism 200 and a driving mechanism 300 are set, and the driving mechanism 300 drives the detection mechanism 200 to adjust the length of the detection mechanism 200 extending to the outside of the support rod 110 according to different wind speeds. In the case of high wind speed, the length of the detection mechanism 200 extending to the outside of the support rod 110 is shorter, so as to avoid the detection mechanism 200 from over-rotating due to excessive wind force, thereby improving the measurement accuracy. In the case of low wind speed, the length of the detection mechanism 200 extending to the outside of the support rod 110 is appropriately increased, so that the detection mechanism 200 is more easily driven by the wind to rotate;

[0038] Considering that the wind force detection instrument is exposed to the outside world for a long time, the instrument is susceptible to impact under severe weather conditions such as strong wind, heavy rain, hail, etc., which may cause the instrument components to deform, thereby affecting the subsequent normal operation of the instrument; therefore, a protective mechanism 400 is provided, and when the detection mechanism 200 is retracted into the support rod 110, the protective mechanism 400 is driven to move to cover the outlet end of the support rod 110, so that when the device is not in use, the detection mechanism 200 and the internal parts of the support rod 110 are protected. When the device is not in use or encounters severe weather such as snow, impurities such as dust or snow can be prevented from entering the support rod 110, avoiding affecting the normal operation of the detection mechanism 200 and the internal parts of the support rod 110, thereby increasing the service life of the detection mechanism 200;

[0039] Furthermore, when the detection mechanism 200 extends to the outside of the support rod 110, a triangular bracket shape is formed between the detection mechanism 200, the driving mechanism 300 and the support rod 110, thereby improving the overall anti-deformation ability. When the detection mechanism 200 is performing rotation detection, the triangular bracket structure can effectively prevent the detection mechanism 200 from being displaced or loosened due to vibration caused by rotation or external force impact, thereby further ensuring the accuracy of the detection mechanism 200 during measurement.

[0040] It is necessary to detect wind force, such as Figure 2-Figure 3 As shown, the specific structure of the detection mechanism 200 is further disclosed, wherein a group of the detection mechanism 200 includes a moving rod 210 slidably connected to the fixed plate 111, and a blade 211 is fixedly connected to the moving rod 210. When the moving rod 210 moves, it can drive the blade 211 to move out from the inside of the support rod 110 to detect the external wind force.

[0041] Considering the need to drive the detection mechanism 200 to move later, such as Figure 2-Figure 3As shown, the specific structure of the driving mechanism 300 is further disclosed. The driving mechanism 300 at least includes a screw rod 310 rotatably connected to the fixed plate 111, a micro motor 311 is fixedly installed at the bottom of the support rod 110, and the output end of the micro motor 311 passes through the fixed plate 111 and is fixedly connected to one side of the screw rod 310, a moving block 312 is screwed on the screw rod 310, and starting the micro motor 311 drives the moving block 312 to move linearly on the screw rod 310.

[0042] In order to drive the blade 211 to move, as Figure 2-Figure 3 As shown, a plurality of rotating rods 313 are rotatably connected to the moving block 312, and the plurality of rotating rods 313 are rotatably connected to adjacent blades 211 on the side away from the moving block 312. The moving block 312 moves downward to drive the rotating rods 313 to move. Under the limitation of the length of the rotating rods 313, the rotating rods 313 can push the blades 211 to move outside the support rod 110 while moving downward, and the length of the blades 211 extending outside the support rod 110 can be adjusted according to the wind speed.

[0043] When the wind speed is low, the longer the length of the blade 211 extending to the outside of the support rod 110 is, the longer the moment formula M=F×L shows that when the force F is relatively small, if the force arm L, i.e., the length of the mobile rod 210 extending to the outside of the support rod 110, increases, then the moment M will increase. When the longer mobile rod 210 is subjected to a smaller wind force, the blade 211 is easier to rotate at a lower wind speed due to the increase in the force arm.

[0044] When the wind speed is high, the length of blade 211 extending outside support rod 110 is appropriately shortened, so that the wind force on blade 211 is relatively reduced, thereby reducing the rotation speed of blade 211 to keep it within a reasonable range, thereby making the measurement of blade 211 at high wind speed more accurate and reliable.

[0045] When the blade 211 is not in use, although the blade 211 is retracted into the support rod 110, it is necessary to further prevent the blade 211 from being damaged by rain, snow, etc. Figure 2-Figure 5 as well as Figure 7-Figure 8 As shown, the specific structure of the protection mechanism 400 is further disclosed. The protection mechanism 400 at least includes a protection plate 410 slidably connected to the outer wall of the support rod 110, and two connecting rods 420 are rotatably connected to the protection plate 410, and the two connecting rods 420 are rotatably connected to the two sides of the blade 211 at one side away from the protection plate 410;

[0046] like Figure 7As shown, when the blade 211 moves to the outside of the support rod 110, under the length limit of the connecting rod 420, the blade 211 moves, which can push the connecting rod 420 to move upward, thereby driving the protective plate 410 to move on the outer wall of the support rod 110, so that when the blade 211 is located at the outlet end of the support rod 110, the two protective plates 410 move to both sides without causing motion interference with the blade 211, and when the blade 211 moves to the outside of the support rod 110, a triangular bracket is formed between the connecting rod 420, the blade 211 and the support rod 110, thereby improving the overall anti-deformation ability, so that when the blade 211 rotates, the triangular bracket structure can effectively prevent the blade 211 from being displaced or loosened due to vibration or external force impact caused by the rotation;

[0047] like Figure 8 As shown, when the blade 211 moves toward the inside of the support rod 110, under the limitation of the length of the connecting rod 420, the blade 211 pulls the connecting rod 420 to move downward, thereby pulling the protective plate 410 to move downward, so that the two protective plates 410 fit together to cover the outlet end of the support rod 110, thereby protecting the blade 211 and the internal parts of the support rod 110, so that when the device is not in use or in bad weather such as snowing, impurities such as dust and snow are prevented from entering the inside of the support rod 110, avoiding affecting the normal operation of the internal parts of the support rod 110, and further effectively avoiding the problem of reducing the service life of the blade 211 due to the long-term erosion of the blade 211 by sunlight, rain and snow.

[0048] When the blade 211 is located outside the support rod 110, the connecting rod 420 is limited in length so that the connecting rod 420 is inclined, thereby pulling the protective plate 410 to move downward. In order to avoid motion interference between the blade 211 and the protective plate 410, Figure 6As shown, the protective plate 410 is slidably connected to a movable plate 411, and the inner wall of the protective plate 410 is fixedly connected to a return spring 412, and the side of the return spring 412 away from the protective plate 410 is fixedly connected to the inner wall of the movable plate 411. When the movable plate 411 is not squeezed, under the elastic force of the return spring 412, the contact surface of the movable plate 411 and the protective plate 410 and the blade 211 are in a parallel state. When the blade 211 is just located at the outlet end of the support rod 110, the blade 211 and the connecting rod 420 are vertical. When the blade 211 continues to move toward the outside of the support rod 110, the length of the connecting rod 420 is limited. The connecting rod 420 will rotate and move downward, thereby driving the two protective plates 410 to move closer to the blade 211. The two protective plates 410 are limited by the moving rod 210 or the rotating rod 313, and the position of the movable plate 411 corresponds to the position of the moving rod 210 and the rotating rod 313. The moving rod 210 and the rotating rod 313 block the movable plate 411, so that the protective plate 410 slides outside the movable plate 411. At this time, the return spring 412 is in a compressed state, thereby preventing the protective plate 410 from moving toward the blade 211 and causing motion interference with the moving rod 210 or the rotating rod 313.

[0049] Considering that there are a plurality of blades 211, a plurality of protective plates 410 are required to shield the corresponding outlet ends. Figure 1-Figure 2 As shown, a plurality of protection mechanisms 400 are provided, and pairs of protection mechanisms 400 are symmetrically arranged on the upper and lower sides directly above the blade 211, thereby shielding the corresponding outlet ends to prevent dust, snow and other impurities from entering the support rod 110 and causing damage to the internal parts of the support rod 110.

[0050] In order to ensure the stability of the movement of the protective plate 410, Figure 5 As shown, a plurality of positioning grooves are provided on the outer wall of the support rod 110, and positioning blocks 430 are slidably connected in each of the positioning grooves, and the side of the positioning block 430 away from the positioning groove is slidably connected to the adjacent protective plate 410. When the protective plate 410 moves, the connecting rod 420 is driven to slide in the positioning groove, thereby providing guidance and stability for the movement of the protective plate 410.

[0051] When the moving rod 210 moves, it is necessary to ensure the stability and guidance of the moving rod 210. Figure 3As shown, a plurality of slide grooves are provided on the fixed plate 111, and sliders 112 are slidably connected in the slide grooves, and a plurality of sliders 112 are fixedly connected to the adjacent moving rod 210 on the side away from the slide grooves. When the rotating rod 313 pushes the blade 211 to move, the moving rod 210 is driven to move, thereby driving the slider 112 to slide in the slide groove. By sliding the slider 112 in the slide groove, a clear direction is provided for the movement of the blade 211, avoiding the occurrence of deviation when the blade 211 moves, thereby improving the stability of the movement of the blade 211.

[0052] Working principle: When the wind force needs to be detected, the micro motor 311 is started to drive the moving block 312 to move linearly on the screw rod 310, thereby driving the rotating rod 313 to move. Under the limit of the length of the rotating rod 313, while the rotating rod 313 moves downward, the blade 211 can be pushed to move outside the support rod 110, and the length of the blade 211 extending outside the support rod 110 can be adjusted according to the wind speed.

[0053] When the blade 211 moves to the outside of the support rod 110, under the length limit of the connecting rod 420, the blade 211 moves, which can drive the connecting rod 420 to move upward, thereby driving the protective plate 410 to move on the outer wall of the support rod 110, so that when the blade 211 is located at the outlet end of the support rod 110, the two protective plates 410 move to both sides without causing motion interference with the blade 211. When the blade 211 moves to the outside of the support rod 110, a triangular bracket is formed between the connecting rod 420, the blade 211 and the support rod 110, thereby improving the overall anti-deformation ability, so that when the blade 211 rotates, the triangular bracket structure can effectively prevent the blade 211 from being displaced or loosened due to vibration or external force impact caused by the rotation;

[0054] When the blade 211 moves toward the inside of the support rod 110, the blade 211 moves to pull the connecting rod 420 to move, and under the limitation of the length of the connecting rod 420, the connecting rod 420 moves downward, thereby pulling the protective plate 410 to move downward, so that the two protective plates 410 fit together to cover the outlet end of the support rod 110, thereby protecting the blade 211 and the internal parts of the support rod 110, so that when the device is not in use or in bad weather such as snowing, impurities such as dust and snow are prevented from entering the inside of the support rod 110, avoiding affecting the normal operation of the internal parts of the leaf support rod 110, and the blade 211 is eroded by sunlight, rain and snow for a long time, thereby reducing the service life of the device.

[0055] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A control instrument for detecting wind power in wind power generation, comprising a base (100), a support rod (110) being rotatably connected to the base (100), a fixing plate (111) being fixedly connected inside the support rod (110), characterized in that: The fixing plate (111) is provided with four groups of detection mechanisms (200) for detecting wind force, and the fixing plate (111) is also provided with a driving mechanism (300) and a protection mechanism (400); The detection mechanism (200) is driven by the driving mechanism (300) to adapt and adjust the length of the detection mechanism (200) extending to the outside according to different wind speed requirements; when the detection mechanism (200) moves to the outside of the support pole (110), the detection mechanism (200) and the protection mechanism (400) form a triangular bracket shape, which can provide support force for the base (100); when the detection mechanism (200) is located inside the support pole (110), the protection mechanism (400) is used for protection.

2. The control instrument for detecting wind power in wind power generation according to claim 1, characterized in that: One group of the detection mechanisms (200) comprises a moving rod (210) slidably connected to a fixed plate (111), and a blade (211) is fixedly connected to the moving rod (210).

3. The control instrument for detecting wind power in wind power generation according to claim 1, characterized in that: The driving mechanism (300) comprises at least a screw rod (310) rotatably connected to a fixed plate (111); a micro motor (311) is fixedly mounted on the bottom of the support rod (110); an output end of the micro motor (311) passes through the fixed plate (111) and is fixedly connected to one side of the screw rod (310); and a moving block (312) is screwed onto the screw rod (310).

4. The control instrument for detecting wind power in wind power generation according to claim 3, characterized in that: The moving block (312) is rotatably connected to a plurality of rotating rods (313), and the plurality of rotating rods (313) are rotatably connected to adjacent blades (211) at a side away from the moving block (312).

5. The control instrument for detecting wind power in wind power generation according to claim 2, characterized in that: The protection mechanism (400) comprises at least a protection plate (410) slidably connected to the outer wall of the support rod (110), two connecting rods (420) being rotatably connected to the protection plate (410), and the two connecting rods (420) are rotatably connected to two sides of the blade (211) at a side away from the protection plate (410).

6. The control instrument for detecting wind power in wind power generation according to claim 5, characterized in that: A movable plate (411) is slidably connected inside the protective plate (410), a return spring (412) is fixedly connected to the inner wall of the protective plate (410), and a side of the return spring (412) away from the protective plate (410) is fixedly connected to the inner wall of the movable plate (411).

7. The control instrument for detecting wind power in wind power generation according to claim 2, characterized in that: A total of multiple groups of the protection mechanisms (400) are provided, and pairs of the protection mechanisms (400) are symmetrically arranged on the upper and lower sides directly above the blade (211).

8. The control instrument for detecting wind power in wind power generation according to claim 5, characterized in that: The outer wall of the support rod (110) is provided with a plurality of positioning grooves, each of which is slidably connected with a positioning block (430), and a side of the positioning block (430) away from the positioning groove is slidably connected to an adjacent protective plate (410).

9. The control instrument for detecting wind power in wind power generation according to claim 2, characterized in that: The fixed plate (111) is provided with a plurality of sliding grooves, each of which is slidably connected to a slider (112), and a side of the plurality of sliders (112) away from the sliding groove is fixedly connected to an adjacent moving rod (210).

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