Rotation speed protection device for small wind power generation equipment

Abstract

This invention discloses a rotational speed protection device for a small wind power generation facility and relates to the field of wind power generation facilities. The rotational speed protection device for a small wind power generation facility includes a support sleeve, wherein a rotating shaft is rotatably connected to the top of the support sleeve, an adjustment component is fixedly attached to the outer wall of the top of the rotating shaft, a blade is fixedly connected to the other end of the adjustment component, a gear transmission is fixedly connected to the bottom of the rotating shaft, the output end of the gear transmission is fixedly connected to a wind turbine via a coupling, a battery group is provided at the bottom of the wind turbine, the wind turbine and the battery group are electrically connected, and a control component is fixedly attached to the top of the rotating shaft. In this invention, the design of the lock component causes the rotating shaft to lock and stop rotation when the wind speed is excessive. This protects the wind turbine and prevents the wind turbine from losing its balance due to over-rotation of the rotating shaft and from causing a fire due to overpower.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation equipment, and particularly to a rotational speed protection device for small wind power generation equipment.

Background Art

[0002] Wind power is one of the important sources of clean energy. In recent years, with the rapid development of wind turbines, wind energy has attracted more and more attention, and the amount of wind power generated has also been increasing year by year. Many countries and regions are planning a significant development of the wind power industry. Currently, the wind turbines used in the wind power industry can be roughly classified into two types: horizontal axis wind turbines (HAWT) and vertical axis wind turbines (VAWT) based on the direction of their rotating shafts.

[0003] Among these, all vertical axis wind turbines are small wind turbines, generally for household use. The airflow conditions in which they are placed are often very complex, but usually no all-directional wind detection and speed limit safety devices are equipped due to cost reasons. Therefore, when the gust intensity from each direction exceeds the limit, the rotational speed is too fast, the output power balance of the wind turbine is destroyed, the overload of the wind turbine causes a fire, and as a result, the lifespan of the wind power generation equipment is reduced. To solve such problems, the present invention proposes a rotational speed protection device for small wind power generation equipment.

Summary of the Invention

Problems to be Solved by the Invention

[0004] An object of the present invention is to provide a rotational speed protection device for small wind power generation equipment, which is proposed to solve the drawbacks existing in the prior art.

Means for Solving the Problems

[0005] A rotational speed protection device for a small wind power generation facility equipped with a support sleeve, wherein a rotating shaft is rotatably connected to the top of the support sleeve, an adjustment component is fixedly attached to the outer wall of the top of the rotating shaft, a blade is fixedly connected to the other end of the adjustment component, a gear transmission is fixedly connected to the bottom end of the rotating shaft, the output end of the gear transmission is fixedly connected to a wind turbine via a coupling, a battery group is provided at the bottom of the wind turbine, the wind turbine and the battery group are electrically connected, a control component is fixedly attached to the top of the rotating shaft, a locking component is fixedly attached inside the support sleeve, the locking component and the rotating shaft are fitted together externally, and a main control device is fixedly attached to the inner wall of the support sleeve.

[0006] Preferably, an air pump is fixedly mounted inside the support sleeve, the air pump is electrically connected to a main control device, ventilation holes are provided in the outer wall of the support sleeve, a first air tube is fixedly connected to the output end of the air pump, the other end of the first air tube is fixedly connected to a second air tube and a third air tube via a three-way joint, a pneumatic electric slip ring is fixedly mounted on the top of the support sleeve, and the movable end of the pneumatic electric slip ring is fixedly fitted onto the outer wall of the rotating shaft. Preferably, there are four of each of the adjustment components and blades, and all four of the adjustment components and blades are arranged at the same interval along the axis of rotation.

[0007] Preferably, the adjustment component includes a sleeve, one end of which is fixedly connected to the outer wall of the rotating shaft, a movable rod is slidably fitted inside the sleeve, one end of which is fixedly connected to a vane, a first piston is fixedly connected to the other end of which is which, the first piston is slidably connected to the sleeve, a through hole is provided inside the rotating shaft, the rotating shaft communicates with the sleeve through the through hole, and movable brackets are provided on both sides of the sleeve.

[0008] Preferably, the movable bracket includes a fixing ring, the fixing ring is fixedly fitted onto a rotating shaft, a slide rod is fixedly connected to the outer wall of the fixing ring, a first spring is fitted onto the outer wall of the slide rod, a slider is slidably connected to the outer wall of the slide rod, a connecting rod is movably connected to the outer wall of the slider, and the other end of the connecting rod is movably connected to the outer wall of the blade.

[0009] Preferably, the other end of the third air tube communicates with the input end of a pneumatic electric slip ring, the output end of the pneumatic electric slip ring communicates with a through hole via a rotating shaft, a second gas solenoid valve and a second safety valve are fixedly attached to the outer wall of the third air tube, and both the second gas solenoid valve and the second safety valve are electrically connected to the main control device.

[0010] Preferably, the control component includes a connecting bar, a mounting groove is provided inside the connecting bar, a second spring is mounted in the mounting groove of the connecting bar, one end of the second spring is fixedly connected to the connecting bar, a contact block is fixedly connected to the other end of the second spring, a contact switch is mounted in the mounting groove of the connecting bar, the contact switch and the contact block correspond to each other, and the contact switch is electrically connected to the main control device via a pneumatic electric slip ring.

[0011] Preferably, the locking component includes a cover plate and a mounting case, the cover plate and the mounting case are fixedly connected via bolts, the mounting case is fixedly connected to the inside of a support sleeve, a protrusion is fixedly connected to the outer wall of the rotating shaft, an outer ring is fitted onto the outer wall of the rotating shaft and the protrusion, the outer ring is located inside the mounting case, a projection is fixedly connected to the outer wall of the outer ring, a mounting base is fixedly mounted inside the mounting case, a housing is fixedly mounted to the outer wall of the mounting base, connecting pipes are fixedly connected to both sides of the housing, a second piston is slidably connected inside the housing, a projection rod is fixedly connected to the outer wall of the second piston, a third spring is fitted onto the outer wall of the projection rod, and the other end of the projection rod extends through to the outside of the housing.

[0012] Preferably, there are multiple projections, mounting bases, housings, connecting pipes, projection rods, third springs, and second pistons, and the multiple projections, mounting bases, housings, connecting pipes, projection rods, third springs, and second pistons are all arranged at the same intervals along the axis of rotation, the multiple housings are connected in series to each other via connecting pipes, and the projection rods and projections correspond to each other.

[0013] Preferably, the other end of the second air tube is connected to a connecting pipe via a three-way joint, the first gas solenoid valve and the first safety valve are fixedly attached to the outer wall of the second air tube, and both the first gas solenoid valve and the first safety valve are electrically connected to the main control device. [Effects of the Invention]

[0014] In this invention, the design of the control component causes the rotational speed of the rotating shaft to increase when the external wind speed is excessive, driving the control component to rotate. Due to the action of centrifugal force, the contact block moves outward, and at the same time, the second spring in the connecting bar is stretched, thereby causing the contact block and the contact switch to come into contact. When the wind speed is at an appropriate level, the elastic force of the second spring prevents the contact block and the contact switch from coming into contact, thereby allowing the rotational speed of the rotating shaft to be monitored in real time.

[0015] In this invention, the design of the adjustment component allows the adjustment component to extend or retract the blades, thereby changing the wind-receiving area of ​​the blades and the adjustment component to adjust the rotational speed of the rotating shaft. This maintains the rotational speed of the rotating shaft at an appropriate level, and the balance of the output power of the wind turbine is maintained.

[0016] In this invention, the locking component is designed so that if the wind speed is excessive, the locking component locks the rotating shaft and stops its rotation. This protects the wind turbine and prevents the turbine from losing its balance due to over-rotation of the rotating shaft, as well as preventing fires caused by over-power. [Brief explanation of the drawing]

[0017] [Figure 1] This is a schematic diagram of the structure of the rotational speed protection device for a small wind power generation facility according to the present invention. [Figure 2] This is a schematic diagram of the structure of the blades, gearbox, and wind turbine in the rotational speed protection device for a small wind power generation facility of the present invention. [Figure 3] This is a schematic diagram of the structure of the air pump, first air tube, and vent hole in the rotational speed protection device for a small wind power generation facility of the present invention. [Figure 4] This is a schematic diagram of the structure of the second air tube, the first gas solenoid valve, and the first safety valve in the rotational speed protection device for a small wind power generation facility of the present invention. [Figure 5] This is a schematic diagram of the structure of the adjustment component in the rotational speed protection device for a small wind power generation facility according to the present invention. [Figure 6]It is a schematic diagram of the structure of the movable bracket in the rotational speed protection device of the small wind power generation equipment of the present invention. [Figure 7] It is a schematic diagram of the structure of the control component in the rotational speed protection device of the small wind power generation equipment of the present invention. [Figure 8] It is a top view of the lock component in the rotational speed protection device of the small wind power generation equipment of the present invention. [Figure 9] It is a schematic diagram of the structure of the mounting case, outer ring, and protrusion in the rotational speed protection device of the small wind power generation equipment of the present invention. [Figure 10] It is a schematic diagram of the local structure at location A in FIG. 9 in the rotational speed protection device of the small wind power generation equipment of the present invention. [Figure 11] It is a schematic diagram of the structure of the outer ring, protrusion, and protrusion rod in the rotational speed protection device of the small wind power generation equipment of the present invention (at this time, the lock component is in the initial state). [Figure 12] It is a schematic diagram of the structure of the outer ring, protrusion, and protrusion rod in the rotational speed protection device of the small wind power generation equipment of the present invention (at this time, the lock component is in the operating state). [Figure 13] It is a front view of the rotational speed protection device of the small wind power generation equipment of the present invention.

Embodiments for Carrying Out the Invention

[0018] Hereinafter, referring to the drawings in the embodiments of the present invention, the technical solution means in the embodiments of the present invention will be clearly and completely described. Of course, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0019] As shown in Figures 1 to 3, this is a rotation speed protection device for a small wind power generation facility equipped with a support sleeve 1, wherein a rotating shaft 2 is rotatably connected to the top of the support sleeve 1, an adjustment component 3 is fixedly attached to the outer wall of the top of the rotating shaft 2, a blade 4 is fixedly connected to the other end of the adjustment component 3, a gear transmission 5 is fixedly connected to the bottom of the rotating shaft 2, the output end of the gear transmission 5 is fixedly connected to the wind turbine 6 via a coupling, a battery group 9 is provided at the bottom of the wind turbine 6, the wind turbine 6 and the battery group 9 are electrically connected, a control component 7 is fixedly attached to the top of the rotating shaft 2, a lock component 8 is fixedly attached inside the support sleeve 1, the lock component 8 and the rotating shaft 2 are fitted onto each other, and a main control device 14 is fixedly attached to the inner wall of the support sleeve 1.

[0020] As shown in Figures 1 to 4, an air pump 10 is fixedly mounted inside the support sleeve 1, the air pump 10 is electrically connected to the main control device 14, a ventilation hole 12 is provided in the outer wall of the support sleeve 1, a first air tube 11 is fixedly connected to the output end of the air pump 10, the other end of the first air tube 11 is fixedly connected to the second air tube 15 and the third air tube 20 via a three-way joint, a pneumatic electric slip ring 13 is fixedly mounted on the top of the support sleeve 1, and the movable end of the pneumatic electric slip ring 13 is fixedly fitted onto the outer wall of the rotating shaft 2.

[0021] As shown in Figures 5 and 6, there are four adjustment components 3 and four blades 4, and all four adjustment components 3 and blades 4 are arranged at the same interval along the axis of the rotating shaft 2. The adjustment component 3 includes a sleeve 301, one end of which is fixedly connected to the outer wall of the rotating shaft 2, a movable rod 302 is slidably fitted inside the sleeve 301, one end of which is fixedly connected to the blades 4, a first piston 303 is fixedly connected to the other end of the movable rod 302, the first piston 303 is slidably connected to the sleeve 301, a through hole 304 is provided inside the rotating shaft 2, the rotating shaft 2 and the sleeve 301 communicate with each other through the through hole 304, and movable brackets 305 are provided on both sides of the sleeve 301. The movable bracket 305 includes a fixed ring 3051, which is fixedly fitted onto the rotating shaft 2, a slide rod 3052 is fixedly connected to the outer wall of the fixed ring 3051, a first spring 3053 is fitted onto the outer wall of the slide rod 3052, a slider 3054 is slidably connected to the outer wall of the slide rod 3052, a connecting rod 3055 is movably connected to the outer wall of the slider 3054, and the other end of the connecting rod 3055 is movably connected to the outer wall of the vane 4. The other end of the third air tube 20 communicates with the input end of the pneumatic electric slip ring 13, the output end of the pneumatic electric slip ring 13 communicates with the through hole 304 via the rotating shaft 2, a second gas solenoid valve 18 and a second safety valve 19 are fixedly attached to the outer wall of the third air tube 20, and both the second gas solenoid valve 18 and the second safety valve 19 are electrically connected to the main control device 14.

[0022] In the above proposed technology, the control component 7 controls the opening of the second safety valve 19 via the main control device 14. The gas in the first piston 303 passes through the through hole 304 and flows into the first air tube 11, and is then discharged through the second safety valve 19, releasing the pressure. The force of the first spring 3053 pushes and moves the slider 3054, and the slider 3054 retracts the blade 4 via the connecting rod 3055. At this time, the wind-receiving area of ​​the blade 4 and the adjustment component 3 decreases, the rotational speed of the rotating shaft 2 decreases and is maintained in an appropriate state, thereby maintaining the balance of the output power of the wind turbine generator 6.

[0023] When the external wind speed is normal, the air pump 10 is activated, the second safety valve 19 is closed, the second gas solenoid valve 18 is opened, and the first gas solenoid valve 16 is closed. The gas flows into the through hole 304 through the first air tube 11, the third air tube 20, and the pneumatic electric slip ring 13, and enters the sleeve 301 through the through hole 304. The gas inside the sleeve 301 pushes and moves the first piston 303, which in turn extends the blades 4 via the movable rod 302, returning the blades 4 to their initial state.

[0024] As shown in Figure 7, the control component 7 includes a connecting bar 701, a mounting groove 702 is provided inside the connecting bar 701, a second spring 703 is mounted in the mounting groove 702 of the connecting bar 701, one end of the second spring 703 is fixedly connected to the connecting bar 701, a contact block 704 is fixedly connected to the other end of the second spring 703, a contact switch 705 is mounted in the mounting groove 702 of the connecting bar 701, the contact switch 705 and the contact block 704 correspond to each other, and the contact switch 705 is electrically connected to the main control device 14 via a pneumatic electric slip ring 13.

[0025] In the above proposed technology, if the external wind speed is excessive, the rotational speed of the rotating shaft 2 increases, and the rotating shaft 2 drives the control component 7 to rotate. Due to the action of centrifugal force, the contact block 704 moves outward, and at the same time, the second spring 703 in the connecting bar 701 is stretched, thereby causing the contact block 704 and the contact switch 705 to come into contact.

[0026] When the wind speed is at an appropriate level, the elastic force of the second spring 703 prevents the contact block 704 and the contact switch 705 from making contact.

[0027] As shown in Figures 8 to 12, the locking component 8 includes a cover plate 801 and a mounting case 802, the cover plate 801 and the mounting case 802 are fixedly connected via bolts, the mounting case 802 is fixedly connected to the inside of the support sleeve 1, a projection 201 is fixedly connected to the outer wall of the rotating shaft 2, an outer ring 803 is fitted onto the outer walls of the rotating shaft 2 and the projection 201, the outer ring 803 is located inside the mounting case 802, and a projection 804 is fixedly connected to the outer wall of the outer ring 803. A mounting base 805 is fixedly attached inside the mounting case 802, a housing 806 is fixedly attached to the outer wall of the mounting base 805, connecting pipes 807 are fixedly connected to both sides of the housing 806, a second piston 810 is slidably connected inside the housing 806, a projection rod 808 is fixedly connected to the outer wall of the second piston 810, a third spring 809 is fitted onto the outer wall of the projection rod 808, and the other end of the projection rod 808 extends through and out of the housing 806. There are multiple projections 804, mounting bases 805, housings 806, connecting pipes 807, projection rods 808, third springs 809, and second pistons 810. These multiple projections 804, mounting bases 805, housings 806, connecting pipes 807, projection rods 808, third springs 809, and second pistons 810 are all arranged at the same intervals along the axis of the rotation shaft 2. The multiple housings 806 are connected in series to each other via connecting pipes 807, and the projection rods 808 and projections 804 correspond to each other. The other end of the second air tube 15 communicates with the connecting pipe 807 via a three-way joint. The first gas solenoid valve 16 and the first safety valve 17 are fixedly attached to the outer wall of the second air tube 15, and both the first gas solenoid valve 16 and the first safety valve 17 are electrically connected to the main control device 14.

[0028] In the above proposed technology, if the rotational speed of the rotating shaft 2 remains excessive even after the blades 4 and adjustment component 3 have contracted, the control component 7 controls the main control device 14 to activate the air pump 10. Simultaneously, the second gas solenoid valve 18 is closed, the second air tube 15 is opened, and the first safety valve 17 is closed. Gas flows into the housing 806 through the first air tube 11, the second air tube 15, and the connecting pipe 807. The gas in the housing 806 pushes and moves the second piston 810, which in turn moves the projection rod 808 outward, thereby bringing the projection rod 808 into contact with the outer ring 803. As the rotating shaft 2 rotates, driving the outer ring 803 via the protrusion 201, the outer ring 803 drives the projection 804 to rotate, causing the projection 804 to come into contact with the projection rod 808. The projection rod 808 stops the projection 804, thereby stopping the rotation of the rotating shaft 2 and protecting the wind turbine 6. This prevents the wind turbine 6 from losing its balance due to excessive rotation of the rotating shaft 2, and also prevents fires caused by overcurrent.

[0029] When the external wind speed is normal, the first safety valve 17 opens. The force of the third spring 809 pushes and moves the second piston 810, and the second piston 810 retracts the projection rod 808. At this time, the projection rod 808 and the projection 804 do not come into contact, and the rotating shaft 2 rotates by driving the outer ring 803 and projection 804 via the protrusion 201. The projection rod 808 does not restrict the rotation of the rotating shaft 2, and the rotating shaft 2 continues to operate by driving the wind turbine generator 6 via the gear transmission 5.

[0030] The specific usage and operation of this embodiment are as follows. When using the present invention, the blades 4 rotate the rotating shaft 2 via the adjustment component 3, the speed of the rotating shaft 2 is adjusted by the gear gear transmission 5, and then the internal rotor of the wind turbine 6 is driven to operate, generating electricity with the wind turbine 6, and energy is stored by the battery group 9. Figure 2 may be used to refer to the above structure and process.

[0031] In the above proposed technology, if the external wind speed is excessive, the rotational speed of the rotating shaft 2 increases, and the rotating shaft 2 drives the control component 7 to rotate. Due to the action of centrifugal force, the contact block 704 moves outward, and at the same time, the second spring 703 in the connecting bar 701 is stretched, thereby causing the contact block 704 and the contact switch to come into contact. When the wind speed is at an appropriate level, the elastic force of the second spring 703 prevents the contact block 704 and the contact switch 705 from coming into contact. Figure 7 may be used to refer to the above structure and process.

[0032] If the external wind speed is excessive, the contact block 704 and the contact switch 705 make contact, and the control component 7 controls the opening of the second safety valve 19 via the main control device 14. The gas in the first piston 303 passes through the through hole 304 and flows into the first air tube 11, and is then discharged through the second safety valve 19, releasing the pressure. The force of the first spring 3053 pushes and moves the slider 3054, and the slider 3054 retracts the blade 4 via the connecting rod 3055. At this time, the wind-receiving area of ​​the blade 4 and the adjustment component 3 decreases, the rotational speed of the rotating shaft 2 decreases and is maintained in an appropriate state, thereby balancing the output power of the wind turbine 6. Figures 1 to 7 may be used to refer to the above structure and process.

[0033] If the rotational speed of the rotating shaft 2 remains excessive even after the blades 4 and adjustment component 3 have retracted, the control component 7 controls the main control device 14 to start the air pump 10. Simultaneously, the second gas solenoid valve 18 is closed, the second air tube 15 is opened, and the first safety valve 17 is closed. Gas flows into the housing 806 through the first air tube 11, the second air tube 15, and the connecting pipe 807. The gas in the housing 806 pushes and moves the second piston 810, which in turn moves the projection rod 808 outward, thereby bringing the projection rod 808 into contact with the outer ring 803. As the rotating shaft 2 rotates, driving the outer ring 803 via the protrusion 201, the outer ring 803 drives the projection 804 to rotate, causing the projection 804 to come into contact with the projection rod 808. The projection rod 808 stops the projection 804, stopping the rotation of the rotating shaft 2 and protecting the wind turbine 6. This prevents the wind turbine 6 from losing its balance due to excessive rotation of the rotating shaft 2, and also prevents fires caused by overpowering. Figures 1 to 7 may be used to refer to the above structure and process.

[0034] When the external wind speed is normal, the first safety valve 17 is opened. The force of the third spring 809 pushes and moves the second piston 810, and the second piston 810 retracts the projection rod 808. At this time, the projection rod 808 and the projection 804 do not come into contact, and the rotating shaft 2 rotates by driving the outer ring 803 and the projection 804 via the protrusion 201. The projection rod 808 does not restrict the rotation of the rotating shaft 2, and the rotating shaft 2 continues to operate by driving the wind turbine generator 6 via the gear transmission 5. Figures 8 to 12 may be used to refer to the above structure and process.

[0035] The air pump 10 is started, the second safety valve 19 is closed, the second gas solenoid valve 18 is opened, and the first gas solenoid valve 16 is closed. The gas flows into the through hole 304 through the first air tube 11, the third air tube 20, and the pneumatic electric slip ring 13, and enters the sleeve 301 through the through hole 304. The gas inside the sleeve 301 pushes and moves the first piston 303, which in turn extends the blades 4 via the movable rod 302, returning the blades 4 to their initial state. Figures 1 to 13 may be used to refer to the above structure and process.

[0036] The above are merely preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art will understand that any equivalent substitutions or modifications based on the technical proposal and inventive concept of the present invention, within the technical scope disclosed by the present invention, are all included within the scope of protection of the present invention. [Explanation of Symbols]

[0037] 1: Support sleeve; 2: Rotating shaft; 201: Protrusion; 3: Adjustment component; 301: Sleeve; 302: Movable rod; 303: First piston; 304: Through hole; 305: Movable bracket; 3051: Fixing ring; 3052: Slide rod; 3053: First spring; 3054: Slider; 3055: Connecting rod; 4: Blade; 5: Gearbox; 6: Wind turbine; 7: Control component; 701: Connecting bar; 702: Mounting groove; 703: Second spring; 704: Contact block; 705: Contact switch; 8: Locking component; 801: Cover plate; 802: Mounting case; 803: Outer ring; 804: Projection; 805: Mounting base; 806: Housing; 807: Connecting tube; 808: Projection rod; 809: Third spring; 810: Second piston; 9: Battery group; 10: Air pump; 11: First air tube; 12: Vent; 13: Pneumatic electric slip ring; 14: Main control unit; 15: Second air tube; 16: First gas solenoid valve; 17: First safety valve; 18: Second gas solenoid valve; 19: Second safety valve; 20: Third air tube

Claims

1. A rotational speed protection device for a small wind power generation system equipped with a support sleeve (1), wherein a rotating shaft (2) is rotatably connected to the top of the support sleeve (1), an adjustment component (3) is fixedly attached to the outer wall of the top of the rotating shaft (2), a blade (4) is fixedly connected to the other end of the adjustment component (3), a gear transmission (5) is fixedly connected to the bottom end of the rotating shaft (2), the output end of the gear transmission (5) is fixedly connected to a wind turbine (6) via a coupling, a battery group (9) is provided at the bottom of the wind turbine (6), the wind turbine (6) and the battery group (9) are electrically connected, a control component (7) is fixedly attached to the top of the rotating shaft (2), a lock component (8) is fixedly attached inside the support sleeve (1), the lock component (8) and the rotating shaft (2) are externally fitted to each other, and a main control device (14) is fixedly attached to the inner wall of the support sleeve (1). The adjustment component (3) includes a sleeve (301), one end of the sleeve (301) is fixedly connected to the outer wall of the rotating shaft (2), a movable rod (302) is slidably fitted inside the sleeve (301), one end of the movable rod (302) is fixedly connected to a blade (4), a first piston (303) is fixedly connected to the other end of the movable rod (302), the first piston (303) is slidably connected to the sleeve (301), a through hole (304) is provided inside the rotating shaft (2), the rotating shaft (2) and the sleeve (301) are in communication with each other through the through hole (304), and movable brackets (305) are provided on both sides of the sleeve (301). The control component (7) includes a connecting bar (701), a mounting groove (702) is provided inside the connecting bar (701), a second spring (703) is mounted in the mounting groove (702) of the connecting bar (701), one end of the second spring (703) is fixedly connected to the connecting bar (701), a contact block (704) is fixedly connected to the other end of the second spring (703), a contact switch (705) is mounted in the mounting groove (702) of the connecting bar (701), the contact switch (705) and the contact block (704) correspond to each other, and a pneumatic-electric slip ring (13) is provided on the top of the support sleeve (1). The ring is fixedly mounted, the movable end of the pneumatic electric slip ring (13) is fixedly fitted onto the outer wall of the rotating shaft (2), and the contact switch (705) is electrically connected to the main control device (14) via the pneumatic electric slip ring (13). The locking component (8) includes a cover plate (801) and a mounting case (802), the cover plate (801) and the mounting case (802) are fixedly connected via bolts, the mounting case (802) is fixedly connected to the inside of the support sleeve (1), a protrusion (201) is fixedly connected to the outer wall of the rotating shaft (2), an outer ring (803) is fitted onto the outer walls of the rotating shaft (2) and the protrusion (201), the outer ring (803) is located inside the mounting case (802), and a projection (804) is fixedly connected to the outer wall of the outer ring (803), A mounting base (805) is fixedly attached inside a mounting case (802), a housing (806) is fixedly attached to the outer wall of the mounting base (805), connecting pipes (807) are fixedly connected to both sides of the housing (806), a second piston (810) is slidably connected inside the housing (806), a projection rod (808) is fixedly connected to the outer wall of the second piston (810), a third spring (809) is fitted onto the outer wall of the projection rod (808), and the other end of the projection rod (808) extends through and to the outside of the housing (806). An air pump (10) is fixedly mounted inside the support sleeve (1), the air pump (10) is electrically connected to a main control device (14), a ventilation hole (12) is provided in the outer wall of the support sleeve (1), a first air tube (11) is fixedly connected to the output end of the air pump (10), and the other end of the first air tube (11) is fixedly connected to a second air tube (15) and a third air tube (20) via a three-way joint. The other end of the third air tube (20) is in communication with the input end of the pneumatic electric slip ring (13), the output end of the pneumatic electric slip ring (13) is in communication with the through hole (304) via the rotating shaft (2), the second gas solenoid valve (18) and the second safety valve (19) are fixedly attached to the outer wall of the third air tube (20), and both the second gas solenoid valve (18) and the second safety valve (19) are electrically connected to the main control device (14). The other end of the second air tube (15) is connected to a connecting pipe (807) via a three-way joint, a first gas solenoid valve (16) and a first safety valve (17) are fixedly attached to the outer wall of the second air tube (15), and both the first gas solenoid valve (16) and the first safety valve (17) are electrically connected to a main control device (14). A rotation speed protection device for small-scale wind power generation equipment.

2. There are four of each of the adjustment components (3) and blades (4), and all four of the adjustment components (3) and blades (4) are arranged at the same interval along the axis of the rotation shaft (2). A rotational speed protection device for a small wind power generation facility as described in claim 1.

3. The movable bracket (305) includes a fixing ring (3051), the fixing ring (3051) is fixedly fitted onto the rotating shaft (2), a slide rod (3052) is fixedly connected to the outer wall of the fixing ring (3051), a first spring (3053) is fitted onto the outer wall of the slide rod (3052), a slider (3054) is slidably connected to the outer wall of the slide rod (3052), a connecting rod (3055) is movably connected to the outer wall of the slider (3054), and the other end of the connecting rod (3055) is movably connected to the outer wall of the blade (4). A rotational speed protection device for a small wind power generation facility as described in claim 1.

4. The projection (804), mounting base (805), housing (806), connecting pipe (807), projection rod (808), third spring (809), and second piston (810) are all multiple, and the multiple projections (804), mounting base (805), housing (806), connecting pipe (807), projection rod (808), third spring (809), and second piston (810) are all arranged at the same intervals along the axis of the rotation shaft (2), the multiple housings (806) are connected in series with each other via the connecting pipe (807), and the projection rod (808) and projection (804) correspond to each other. The rotational speed protection device for a small wind power generation facility according to claim 2.

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