A dual-blade grid-connected wind turbine

Abstract

The present invention relates to the field of wind power generation technology, and in particular to a dual-impeller grid-connected wind turbine generator, comprising a generator body, wherein the central positions of the front and rear sides of the generator body are rotatably connected to a rotating shaft, and the outer surface of the rotating shaft near the generator body is fixedly connected to a brake disc, and a cooling mechanism is arranged above the brake disc. The dual-impeller grid-connected wind turbine generator uses a cooling mechanism to cool the brake pads and brake discs with water when the wind blades are mechanically braked to reduce the high temperature generated by the continuous friction between the brake pads and the brake discs, thereby improving the braking effect and preventing the generator from being damaged. Rainwater is collected by a water cylinder, and dust in the air is blocked by a dustproof net to prevent dust from entering the water pipe of the cooling mechanism and causing blockage. An active filter is used to adsorb impurities in rainwater to prevent small particles of impurities from clogging the overflow hole and the diversion hole of the cooling mechanism, thereby ensuring the normal operation of the cooling mechanism and saving water resources.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generation, and in particular to a double-impeller grid-connected wind power generator. Background Art

[0002] Modern society has an increasingly high demand for electricity. On the one hand, traditional thermal power generation consumes non-renewable coal resources, and on the other hand, it causes serious pollution to the atmospheric environment. In order to increase power generation and reduce pollution to the atmospheric environment, wind power generation technology will be widely used. Wind turbines will be used in the process of wind power generation.

[0003] When the wind turbines of the prior art are running, when the wind force is strong, the rotation speed of the blades is fast. Since the volume and mass of the blades are large, the high-speed rotation of the blades can easily lead to problems such as blade breakage, damage to the transmission mechanism and the tower. In order to prevent the blades from rotating too fast, the blades are usually mechanically braked so that the brake pads and the brake discs act to generate a braking torque. When the mechanical brakes are applied, the friction between the brake pads and the brake discs generates a lot of heat. When the wind force is strong for a long time, the large amount of heat generated by the mechanical brakes is difficult to dissipate, which can easily cause the fan to catch fire, especially for the double-impeller wind turbines. Summary of the invention

[0004] The object of the present invention is to provide a dual-impeller grid-connected wind turbine generator to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a dual-impeller grid-connected wind turbine, comprising a generator body, wherein the central positions of the front and rear sides of the generator body are rotatably connected to a rotating shaft, and the outer surfaces of the rotating shaft near the generator body are fixedly connected to brake discs, and a cooling mechanism is arranged above the brake discs;

[0006] The front end of the rotating shaft is fixedly connected with a fan blade, and the center position of the lower end surface of the generator body is fixedly connected with a support column.

[0007] Preferably, the cooling mechanism includes a brake pad, a vertical plate, a water pipe, a water cylinder, a pipe hole, a hydraulic push rod and a horizontal plate;

[0008] The hydraulic push rod is fixedly connected to the center position of the upper end surface of the generator body, and the upper end of the hydraulic push rod is fixedly connected to the center position of the lower end surface of the horizontal plate. The brake pads are respectively arranged above the brake disc, and the lower end of the vertical plate is fixedly connected to the center position of the upper end surface of the brake pad. The inner side surface of the upper end of the vertical plate is respectively fixedly connected to the front and rear ends of the horizontal plate. The left and right sides of the front and rear ends of the horizontal plate are both provided with limit plates, and the lower ends of the limit plates are respectively fixedly connected to the upper end surface of the generator body;

[0009] The pipe hole passes through the center position of the upper end surface of the vertical plate to the center position of the lower end surface of the brake pad, and the lower end of the water pipe extends into the pipe hole at the center position inside the brake pad and is fixedly connected to the inner wall of the pipe hole, the upper end of the water pipe is respectively connected to the lower ends of the front and rear sides of the water cylinder, and the lower end surface of the water cylinder is fixedly connected to the upper end surface of the generator body through a support leg.

[0010] Preferably, the lower end of the water pipe is fixedly connected to a sealing plate, and a water outlet is opened at the center of the sealing plate. The water outlet is matched with a plug, and a support rod is provided at the center of the lower end surface of the plug, and a plug is fixedly connected to the lower end of the support rod.

[0011] Preferably, a spring is sleeved on the outer side of the support rod, and the upper end of the spring is fixedly connected to the outer edge of the lower end surface of the sealing plate, and the lower end of the spring is fixedly connected to the outer edge of the upper end surface of the plug.

[0012] Preferably, the plug has the same diameter as the pipe hole, the lower end of the plug is in a hemispherical structure, and the plug is made of wear-resistant ceramics.

[0013] Preferably, overflow holes with arc-shaped structures are respectively provided on the left and right sides of the pipe hole between the sealing plate and the plug, and a plurality of diversion holes to the lower end surface of the brake pad are equidistantly provided on the lower end surface of each overflow hole.

[0014] Preferably, a dustproof net with a conical structure is fixedly connected to the upper end surface of the water cylinder, and an activated carbon filter is fixedly connected to the upper end of the inner side surface of the water cylinder.

[0015] Preferably, the upper end of the outer surface of the water cylinder is rotatably connected to a gear ring, and the upper end surface of the gear ring is fixedly connected to a scraper, and the lower side of the scraper is in contact with the outer side of the dustproof net.

[0016] Preferably, a driving gear is meshed on the rear side of the gear ring, and a driving rod is fixedly connected to the lower end face of the driving gear, a primary bevel gear is fixedly connected to the lower end of the driving rod, and a secondary bevel gear is meshed on the front side of the primary bevel gear, the secondary bevel gear is fixedly connected to the rear side face of the rear brake disc, and the rotating shaft passes through the secondary bevel gear, a sleeve is rotatably connected to the lower side of the driving rod through a bearing, a fixing rod is fixedly connected to the front side face of the sleeve, and the other end of the fixing rod is fixedly connected to the rear side face of the brake pad.

[0017] Preferably, a sleeve is rotatably connected to the top of the driving rod via a bearing, and a fixing rod on the front side of the sleeve is fixedly connected to the rear side of the water cylinder.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. When the fan blades are mechanically braked, the cooling mechanism supplies water to cool the brake pads and brake discs to reduce the high temperature generated by the continuous friction between the brake pads and brake discs, thereby improving the braking effect and avoiding damage to the generator;

[0020] 2. Collect rainwater through a water cylinder, block the dust in the air through a dustproof net to prevent the dust from entering the water pipe of the cooling mechanism and causing blockage, and use an active filter to adsorb impurities in the rainwater to prevent small particles from clogging the overflow holes and diversion holes of the cooling mechanism, thereby ensuring the normal operation of the cooling mechanism and saving water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0023] Figure 2 For the present invention Figure 1 The cross-sectional view at AA in FIG.

[0024] Figure 3 For the present invention Figure 1 The cross-sectional view at BB in FIG.

[0025] Figure 4 For the present invention Figure 3 The cross-sectional view at point C in FIG.

[0026] Figure 5 For the present invention Figure 2 Cross-sectional view at point D in .

[0027] Description of reference numerals:

[0028] 1. Generator body; 11. Pillar; 2. Rotating shaft; 21. Brake disc; 22. Fan blade; 3. Cooling mechanism; 31. Brake pad; 32. Vertical plate; 321. Limit plate; 33. Water pipe; 331. Sealing plate; 332. Water outlet; 333. Blockage; 334. Support rod; 34. Water cylinder; 35. Pipe hole; 351. Overflow hole; 352. Diversion hole; 36. Plug; 361. Spring; 37. Hydraulic push rod; 371. Cross plate; 4. Dustproof net; 41. Activated carbon filter; 5. Gear ring; 51. Scraper; 6. Primary bevel gear; 61. Secondary bevel gear; 62. Drive rod; 63. Drive gear; 64. Sleeve; 641. Fixed rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of 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.

[0030] See also Figures 1 to 5 , the present invention provides a technical solution:

[0031] A double-impeller grid-connected wind turbine comprises a generator body 1, wherein a rotating shaft 2 is rotatably connected to the center positions of the front and rear sides of the generator body 1, and a brake disc 21 is fixedly connected to the outer surface of the rotating shaft 2 near the generator body 1, a cooling mechanism 3 is arranged above the brake disc 21, a fan blade 22 is fixedly connected to the front end of the rotating shaft 2, and a pillar 11 is fixedly connected to the center position of the lower end surface of the generator body 1.

[0032] During operation, the generator body 1 is fixed in the air by the support 11, and the fan blades 22 rotate under the action of wind force to convert mechanical energy into electrical energy and output it through the generator body 1. When the wind force is too strong, the brake disc 21 on the rotating shaft 2 is cooled and braked by the cooling mechanism 3 to avoid damage to the generator body 1.

[0033] As an embodiment of the present invention, Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the cooling mechanism 3 includes a brake pad 31, a vertical plate 32, a water pipe 33, a water cylinder 34, a pipe hole 35, a hydraulic push rod 37 and a horizontal plate 371. The hydraulic push rod 37 is fixedly connected to the center position of the upper end surface of the generator body 1, and the upper end of the hydraulic push rod 37 is fixedly connected to the center position of the lower end surface of the horizontal plate 371. The brake pads 31 are respectively arranged above the brake disc 21, and the lower end of the vertical plate 32 is fixedly connected to the center position of the upper end surface of the brake pad 31. The upper end of the vertical plate 32 is fixedly connected to the center position of the upper end surface of the brake pad 31. The side surfaces are respectively fixedly connected to the front and rear ends of the horizontal plate 371, and the left and right sides of the front and rear ends of the horizontal plate 371 are both provided with limit plates 321, and the lower ends of the limit plates 321 are respectively fixedly connected to the upper end surface of the generator body 1, and the pipe hole 35 passes through the center position of the upper end surface of the vertical plate 32 to the center position of the lower end surface of the brake pad 31, and the lower end of the water pipe 33 extends into the pipe hole 35 at the center position of the brake pad 31 and is fixedly connected to the inner wall of the pipe hole 35, and the upper end of the water pipe 33 is respectively connected to the front and rear sides of the water cylinder 34. The lower end of the water cylinder 34 is connected to the upper end of the generator body 1 through the legs, the lower end of the water pipe 33 is fixedly connected to the sealing plate 331, and the sealing plate 331 is provided with a water outlet 332 at the center, and the water outlet 332 is matched with a plug 333, and the plug 333 has a support rod 334 at the center of the lower end of the plug 333, and the lower end of the support rod 334 is fixedly connected with a plug 36, and a spring 361 is sleeved on the outer side of the support rod 334, and the upper end of the spring 361 is connected to the sealing plate 33 1, and the lower end of the spring 361 is fixedly connected to the outer edge of the upper end surface of the plug 36, the plug 36 is consistent with the diameter of the tube hole 35, and the lower end of the plug 36 is a hemispherical structure, and the plug 36 is made of wear-resistant ceramics, and the left and right sides of the tube hole 35 between the sealing plate 331 and the plug 36 are respectively provided with overflow holes 351 of arc structure, and the lower end surface of each overflow hole 351 is equidistantly provided with a plurality of diverter holes 352 to the lower end surface of the brake pad 31.

[0034] During operation, when the fan blade 22 needs to brake, the hydraulic push rod 37 is started to drive the horizontal plate 371 to be pressed down, thereby driving the vertical plate 32 to be pressed down, and then driving the brake pad 31 to be pressed down and contact the upper end surface of the brake disc 21. As the brake pad 31 is continuously pressed down, the friction resistance of the brake disc 21 is increased, so that the rotation speed of the rotating shaft 2 is slower and slower, and the continuous friction temperature between the brake pad 31 and the brake disc 21 is also continuously increased. As the brake pad 31 is pressed down, the plug 36 is also driven to continuously shrink into the pipe hole 35, so that the plug 333 is continuously lifted up through the support rod 334, so that the water outlet 332 is fully opened, and the cold water in the water cylinder 34 enters the sealing plate 331 and the sealing plate 331 through the water outlet 332 at the lower end of the water pipe 33. With the continuous input of cold water in the pipe hole 35 between the plugs 36, the cold water flows out from the overflow holes 351 on the left and right sides of the pipe hole 35 respectively, and then flows out of the brake pad 31 through the diversion hole 352 and pours on the brake disc 21, thereby cooling the brake pad 31 and the brake disc 21 to prevent the brake pad 31 and the brake disc 21 from being burned due to excessive temperature, thereby avoiding burning of the generator body 1. Limiting plates 321 are provided on the left and right sides of the front and rear ends of the cross plate 371, so that the cross plate 371 always moves in the vertical direction along the limiting plate 321, avoiding the left and right shaking of the cross plate 371 due to the radial left and right force generated by the rotation of the brake disc 21 during braking, thereby ensuring the stable operation of the equipment.

[0035] As an embodiment of the present invention, Figure 2 As shown, a dustproof net 4 with a conical structure is fixedly connected to the upper end surface of the water cylinder 34 , and an activated carbon filter 41 is fixedly connected to the upper end of the inner side surface of the water cylinder 34 .

[0036] During operation, rainwater is collected through the water cylinder 34, the dustproof net 4 can block the sand and dust in the air to prevent the sand and dust from entering the water cylinder 34 and blocking the water pipe 33, and the activated carbon filter 41 can adsorb small particles of impurities in the rainwater to prevent the small particles of impurities from blocking the overflow hole 351 and the diversion hole 352.

[0037] As an embodiment of the present invention, Figure 2As shown, the upper end of the outer surface of the water cylinder 34 is rotatably connected with a gear ring 5, and the upper end surface of the gear ring 5 is fixedly connected with a scraper 51, and the outer side surface of the dustproof net 4 on the lower side of the scraper 51 is fitted, the rear side of the gear ring 5 is meshed with a driving gear 63, and the lower end surface of the driving gear 63 is fixedly connected with a driving rod 62, the lower end of the driving rod 62 is fixedly connected with a primary bevel gear 6, and the front side of the primary bevel gear 6 is meshed with a secondary bevel gear 61, the secondary bevel gear 61 is fixedly connected to the rear side of the rear brake disc 21, and the rotating shaft 2 passes through the secondary bevel gear 61, the lower part of the driving rod 62 is rotatably connected with a sleeve 64 through a bearing, and the front side of the sleeve 64 is fixedly connected with a fixing rod 641, and the other end of the fixing rod 641 is fixedly connected to the rear side of the brake pad 31, the upper part of the driving rod 62 is also rotatably connected with a sleeve 64 through a bearing, and the fixing rod 641 on the front side of the sleeve 64 is fixedly connected to the rear side of the water cylinder 34.

[0038] During operation, based on the above embodiment, when the hydraulic push rod 37 drives the brake pad 31 to be pressed down and contact the brake disc 21, it will drive the primary bevel gear 6 to move down and mesh with the secondary bevel gear 61, and the driving gear 63 above the driving rod 62 will also descend and mesh with the gear ring 5. The secondary bevel gear 61 drives the primary bevel gear 6 to rotate, thereby driving the driving gear 63 to rotate, and then drives the gear ring 5 to rotate. Since the upper end face of the gear ring 5 is fixedly connected with the scraper 51, and the lower side of the scraper 51 is in contact with the outer side of the dustproof net 4, the scraper 51 rotates to scrape the outer surface of the dustproof net 4, scraping off the dust accumulated on the outer surface of the dustproof net 4 to ensure the smoothness of the dustproof net 4, which is convenient for collecting rainwater.

[0039] Working principle: The generator body 1 is fixed in the air by the support 11, and the fan blades 22 rotate under the action of wind force, thereby converting mechanical energy into electrical energy and outputting it through the generator body 1. When the wind force is too strong, the hydraulic push rod 37 is started to drive the horizontal plate 371 to press down, thereby driving the vertical plate 32 to press down, and then driving the brake pad 31 to press down and contact the upper end surface of the brake disc 21. As the brake pad 31 is continuously pressed down, the friction resistance of the brake disc 21 is greater, so that the rotation speed of the rotating shaft 2 is slower and slower, and the continuous friction temperature between the brake pad 31 and the brake disc 21 is also continuously increased. As the brake pad 31 is pressed down, the plug 36 is also driven not to The water pipe 33 is continuously contracted into the tube hole 35, thereby the plug 333 is continuously lifted up by the support rod 334, so that the water outlet 332 is fully opened, and the cold water in the water cylinder 34 enters the tube hole 35 between the sealing plate 331 and the plug 36 through the water outlet 332 at the lower end of the water pipe 33. With the continuous input of cold water, the cold water flows out from the overflow holes 351 on the left and right sides of the tube hole 35, and then flows out of the brake pad 31 through the diversion hole 352 and pours on the brake disc 21, thereby cooling the brake pad 31 and the brake disc 21, preventing the brake pad 31 and the brake disc 21 from being burned due to excessive temperature, and avoiding burning of the generator body 1. Limiting plates 321 are arranged on the left and right sides of both ends of 71, so that the horizontal plate 371 always moves in the vertical direction along the limiting plates 321, so as to avoid the horizontal plate 371 shaking left and right due to the radial left and right force generated by the rotation of the brake disc 21 during braking, thereby ensuring the stable operation of the equipment. Rainwater is collected by the water cylinder 34, and the dustproof net 4 can block the sand and dust in the air to prevent the sand and dust from entering the water cylinder 34 and blocking the water pipe 33. The activated carbon filter 41 can absorb the small particles of impurities in the rainwater to prevent the small particles of impurities from blocking the overflow hole 351 and the diversion hole 352. When the hydraulic push rod 37 is driven When the dynamic brake pad 31 is pressed down and contacts the brake disc 21, it will drive the primary bevel gear 6 to move down and mesh with the secondary bevel gear 61. The driving gear 63 above the driving rod 62 will also descend and mesh with the gear ring 5. The secondary bevel gear 61 drives the primary bevel gear 6 to rotate, thereby driving the driving gear 63 to rotate, and then driving the gear ring 5 to rotate. Since the upper end surface of the gear ring 5 is fixedly connected with the scraper 51, and the lower side of the scraper 51 is in contact with the outer side surface of the dustproof net 4, the scraper 51 rotates to scrape the outer surface of the dustproof net 4, scraping off the dust accumulated on the outer surface of the dustproof net 4 to ensure the smooth flow of the dustproof net 4, which is convenient for collecting rainwater.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A double-impeller grid-connected wind turbine generator, comprising a generator body (1), Features: The generator body (1) is rotatably connected to a rotating shaft (2) at the center of the front and rear sides, and the outer surface of the rotating shaft (2) close to the generator body (1) is fixedly connected to a brake disc (21), and a cooling mechanism (3) is provided above the brake disc (21); The front ends of the rotating shafts (2) are fixedly connected to fan blades (22), and the center position of the lower end surface of the generator body (1) is fixedly connected to a support column (11); The cooling mechanism (3) comprises a brake pad (31), a vertical plate (32), a water pipe (33), a water cylinder (34), a pipe hole (35), a hydraulic push rod (37) and a horizontal plate (371); The hydraulic push rod (37) is fixedly connected to the center position of the upper end surface of the generator body (1), and the upper end of the hydraulic push rod (37) is fixedly connected to the center position of the lower end surface of the horizontal plate (371); the brake pads (31) are respectively arranged at the upper position of the brake disc (21), and the lower end of the vertical plate (32) is fixedly connected to the center position of the upper end surface of the brake pad (31); the inner side surface of the upper end of the vertical plate (32) is respectively fixedly connected to the front and rear ends of the horizontal plate (371); the left and right side surfaces of the front and rear ends of the horizontal plate (371) are both provided with limit plates (321), and the lower ends of the limit plates (321) are respectively fixedly connected to the upper end surface of the generator body (1); The pipe hole (35) penetrates from the center position of the upper end surface of the vertical plate (32) to the center position of the lower end surface of the brake pad (31), and the lower end of the water pipe (33) extends into the pipe hole (35) at the center position inside the brake pad (31) and is fixedly connected to the inner wall of the pipe hole (35), the upper end of the water pipe (33) is respectively connected to the lower ends of the front and rear side surfaces of the water cylinder (34), and the lower end surface of the water cylinder (34) is fixedly connected to the upper end surface of the generator body (1) through a support leg; The lower end of the water pipe (33) is fixedly connected to a sealing plate (331), and a water outlet (332) is provided at the center of the sealing plate (331). The water outlet (332) is matched with a plug (333). The center of the lower end surface of the plug (333) is fixedly connected to a support rod (334), and the lower end of the support rod (334) is fixedly connected to a plug (36); A spring (361) is sleeved on the outer side of the support rod (334), and the upper end of the spring (361) is fixedly connected to the outer edge of the lower end surface of the sealing plate (331), and the lower end of the spring (361) is fixedly connected to the outer edge of the upper end surface of the plug (36); The plug (36) has the same diameter as the tube hole (35), and the lower end of the plug (36) is in a hemispherical structure, and the plug (36) is made of wear-resistant ceramics; The left and right sides of the pipe hole (35) between the sealing plate (331) and the plug (36) are respectively provided with overflow holes (351) of an arc structure, and the lower end surface of each overflow hole (351) is provided with a plurality of shunt holes (352) equidistantly connected to the lower end surface of the brake pad (31).

2. A double-impeller grid-connected wind turbine according to claim 1, Features: The upper end surface of the water cylinder (34) is fixedly connected to a dustproof screen (4) with a conical structure, and the upper end of the inner side surface of the water cylinder (34) is fixedly connected to an activated carbon filter screen (41).

3. A double-impeller grid-connected wind turbine according to claim 2, Features: The upper end of the outer surface of the water cylinder (34) is rotatably connected to a gear ring (5), and the upper end surface of the gear ring (5) is fixedly connected to a scraper (51), and the lower side surface of the scraper (51) is in contact with the outer side surface of the dustproof net (4); The gear ring (5) is meshed with a driving gear (63) at the rear side, and the lower end surface of the driving gear (63) is fixedly connected to a driving rod (62), the lower end of the driving rod (62) is fixedly connected to a primary bevel gear (6), and the front side of the primary bevel gear (6) is meshed with a secondary bevel gear (61), the secondary bevel gear (61) is fixedly connected to the rear side surface of the rear brake disc (21), and the rotating shaft (2) passes through the secondary bevel gear (61), the lower side of the driving rod (62) is rotatably connected to a sleeve (64) via a bearing, and the front side surface of the sleeve (64) is fixedly connected to a fixing rod (641), and the other end of the fixing rod (641) is fixedly connected to the rear side surface of the rear brake pad (31).

4. A double-impeller grid-connected wind turbine according to claim 3, Features: A sleeve (64) is also rotatably connected to the top of the driving rod (62) via a bearing, and a fixing rod (641) on the front side of the sleeve (64) is fixedly connected to the rear side of the water cylinder (34).

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