Wind-driven air compressor with anti-overspeed function

Abstract

A wind-driven air compressor with an anti-overspeed function relates to the field of wind energy utilization, and in particular to a wind-driven air compressor with an anti-overspeed function, which can generate compressed air using a wind-driven air compressor. The wind turbine comprises a horizontal axis wind turbine, comprising a horizontal axis wind wheel, a main shaft and a bracket, the bracket is rotatably connected to the main shaft, and one end of the main shaft is fixedly connected to the horizontal axis wind wheel; the characteristics are: it also comprises an anti-overspeed device, a speed-increasing transmission device and an air pump, the other end of the main shaft is connected to the air pump through the speed-increasing transmission device, an air pump is installed on the bracket, the bracket is rotatably connected to the upper end of the tower, the air pump is connected to the air storage tank in turn through a pipeline and a pneumatic rotary joint; the inner end of the movable cone sleeve is connected to the main shaft through a tension spring. The wind wheel is driven to rotate by wind power, and the wind wheel drives the air pump to work in turn through the main shaft and the transmission speed-increasing device, so that the safe production of compressed air is achieved without using electricity at all.

Description

Technical Field

[0001] The invention relates to the field of wind energy utilization, in particular to a wind-driven air compressor with an anti-overspeed function, which can utilize the wind-driven air compressor to generate compressed air. Background Art

[0002] At present, air compressors used in industrial and agricultural production usually use electric motors to drive air pumps to generate compressed air, which involves applications in electricity and control. In some occasions, it may not be desirable to use electricity, which can solve problems such as electricity safety, transmission line installation and maintenance. For example, in agricultural production, water pumps are used for farmland irrigation. In order to avoid the use of electricity, pneumatic water pumps can be used. Based on the rich wind resources in some areas, devices that use wind energy to generate compressed air are developed to drive water pumps.

[0003] In the prior art, a cam is usually installed at the end of the main shaft of the horizontal axis wind turbine, and several plunger air pumps are installed around the cam. The plunger air pump generates compressed air to drive the remote water pump to pump water. Due to the use of the cam, the radial size of this technology is large, and the vibration, noise and heat generation are large. Therefore, the structure is complex and maintenance is difficult. At the same time, there is a problem of the wind turbine overspeeding. Summary of the invention

[0004] The purpose of the present invention is to provide a wind-driven air compressor with an anti-overspeed function to prevent the wind turbine from overspeeding.

[0005] A wind-driven air compressor with an anti-overspeed function provided by the present invention comprises a wind turbine, which is a horizontal-axis wind turbine, comprising a horizontal-axis wind wheel, a main shaft and a bracket, the bracket is rotatably connected to the main shaft, and one end of the main shaft is fixedly connected to the horizontal-axis wind wheel; it is characterized in that it also includes an anti-overspeed device, a speed-increasing transmission device and an air pump, the other end of the main shaft is connected to the air pump through the speed-increasing transmission device, the air pump is installed on the bracket, the bracket is rotatably connected to the upper end of the tower, and the air pump is connected to the air storage tank in turn through a pipeline and a pneumatic rotary joint; the wind turbine is installed with an anti-overspeed device, and the anti-overspeed device comprises a fixed cone sleeve and a movable cone sleeve, the fixed cone sleeve is installed on the bracket, and an annular groove is provided on the fixed cone sleeve, the inner end opening size of the annular groove is wider than the outer end groove bottom size, and its longitudinal section is conical; the inner end of the movable cone sleeve is connected to the main shaft through a tension spring, and the movable cone sleeve is placed in the annular groove of the fixed cone sleeve.

[0006] The above-mentioned speed increasing transmission device is a belt transmission device, which includes a driving pulley, a driven pulley and a belt. The diameter of the driving pulley is larger than the diameter of the driven pulley. The main shaft is connected to the driving pulley, and the driven pulley is connected to the input shaft of the air pump. The driving pulley and the driven pulley are connected by a belt.

[0007] The above-mentioned tower and gas tank are an integrated structure, the lower end of the bracket is connected to the connecting tube, the pivot is provided with an axial vent hole, the lower end of the pivot is connected to the air inlet pipe of the gas tank, and the pivot is rotatably connected to the connecting tube; the upper end of the pivot is connected to the pneumatic rotary joint, and the pneumatic rotary joint is connected to the air outlet of the air pump through a pipeline.

[0008] A plurality of guide rods are installed on the main shaft, and a guide hole is arranged at the inner end of the movable cone sleeve, and the guide rods are inserted into the guide hole of the movable cone sleeve.

[0009] Compared with the prior art, the present invention has the following outstanding beneficial effects:

[0010] 1. The present invention can be applied to small wind turbines. Due to the high speed, a simple speed-increasing transmission device can be used to reach the rated speed of the air pump. As long as there is a certain wind force, the air pump can be started to work;

[0011] 2. The present invention uses wind power to drive the wind wheel to rotate, and the wind wheel in turn drives the air pump to work through the main shaft and the transmission speed increasing device, thereby achieving safe production of compressed air without using electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of embodiment 1 of the present invention.

[0013] Figure 2 It is a schematic structural diagram of the overspeed prevention device part in Example 1 of the present invention.

[0014] Figure 3 It is a structural diagram of embodiment 2 of the present invention.

[0015] Figure 4 It is a schematic structural diagram of the overspeed prevention device part in Example 3 of the present invention.

[0016] Figure 5 It is a schematic structural diagram of the overspeed prevention device in Example 4 of the present invention. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0018] like Figure 1 As shown, embodiment 1 includes a wind turbine 1 , an overspeed prevention device 4 , a speed increasing transmission device 3 and an air pump 2 .

[0019] In Example 1, the wind turbine 1 is a horizontal axis wind turbine, including a horizontal axis wind rotor 101, a main shaft 102, a bracket 103 and a yaw device 104. A bearing seat is fixedly installed at both ends of the bracket 103, and a bearing is installed in the bearing seat. The two ends of the main shaft 102 are fixedly connected to the inner ring of the bearing on the bearing seat, one end of the main shaft 102 is fixedly connected to the horizontal axis wind rotor 101, and the other end is connected to the air pump 2 through a speed increasing transmission device 3.

[0020] The wind turbine 1 is equipped with a yaw device 104 . The yaw device 104 in this embodiment is a deflector plate, and the lower end of the bracket 103 is fixedly connected to the deflector plate.

[0021] In this embodiment, the speed increasing transmission device 3 is a belt transmission device, which includes a driving pulley 303, a driven pulley 301 and a belt 302. The diameter of the driving pulley 303 is larger than the diameter of the driven pulley 301. The main shaft 102 is fixedly connected to the driving pulley 303, the driven pulley 301 is fixedly connected to the input shaft of the air pump 2, and the driving pulley 303 is connected to the driven pulley 301 through the belt 302. The speed increasing transmission device 3 can also be a chain transmission device or a gear transmission device.

[0022] The air pump 2 is fixedly mounted on the bracket 103, the bracket 103 is rotatably connected to the upper end of the tower 5, and the air pump 2 is connected to the gas tank through a pipeline and a pneumatic rotary joint 503 in turn. In this embodiment, the tower 5 and the gas tank are an integrated structure, the lower end of the bracket 103 is fixedly connected to the connecting tube 502, the pivot 501 is provided with an axial vent hole, the lower end of the pivot 501 is fixedly connected to the air inlet pipe of the gas tank, the cavity of the connecting tube 502 is fixedly mounted with a bearing seat, and the pivot 501 is fixedly connected to the inner ring of the bearing seat in the connecting tube 502. The upper end of the pivot 501 is connected to the pneumatic rotary joint 503, and the pneumatic rotary joint 503 is connected to the air outlet of the air pump 2 through a pipeline.

[0023] like Figure 2 As shown, the wind turbine 1 is equipped with an anti-overspeed device 4, which can prevent the wind turbine 1 from rotating too fast and causing a runaway accident. The anti-overspeed device 4 includes a fixed cone sleeve 401 and a movable cone sleeve 402. The fixed cone sleeve 401 is fixedly installed on the bracket 103. The fixed cone sleeve 401 is provided with an annular groove. The inner end opening size of the annular groove is wider than the outer end groove bottom size, and the longitudinal section is conical. A plurality of guide rods 403 arranged evenly in a circular shape are installed on the main shaft 102. Each guide rod 403 is connected to a movable cone sleeve 402. The inner end of the movable cone sleeve 402 is provided with a guide hole. The guide rod 403 is inserted into the guide hole of the movable cone sleeve 402. The inner end of the movable cone sleeve 402 is connected to the main shaft 102 through a tension spring. The movable cone sleeve 402 is placed in the annular groove of the fixed cone sleeve 401.

[0024] The operation process is as follows: when the airflow drives the horizontal axis wind wheel 101 of the wind turbine 1 to rotate, the horizontal axis wind wheel 101 drives the main shaft 102 to rotate, and the main shaft 102 drives the air pump 2 to work through the speed increasing transmission device 3, so that the compressed air generated by the air pump 2 is input into the air storage tank. When the wind turbine 1 rotates at an overspeed, the movable cone sleeve 402 relies on the excessive centrifugal force to overcome the tension of the tension spring and is thrown out, moves to the outer end of the annular groove of the fixed cone sleeve 401, wedges into the annular groove of the fixed cone sleeve 401, and decelerates by friction with the conical surface of the annular groove of the fixed cone sleeve 401, thereby stabilizing the rotation speed of the wind turbine 1 and avoiding runaway.

[0025] like Figure 3 As shown, in Example 1, the wind turbine 1 adopts a horizontal axis wind turbine, while in Example 2, the wind turbine 1 adopts a vertical axis wind turbine. The vertical axis wind turbine comprises a vertical axis wind rotor 106, a tower 105 and a transmission shaft 107. A bearing seat is fixedly mounted on the tower 105. The transmission shaft 107 is rotatably connected to the tower 105 through the bearing seat. The upper end of the transmission shaft 107 is connected to the vertical axis wind rotor 106, and the lower end is connected to the input shaft of the steering gear box 6 through the speed increase transmission device 3. The output shaft of the steering gear box 6 is connected to the input shaft of the air pump 2. The steering gear box 6 and the air pump 2 are installed on the tower 105, and the air outlet pipe of the air pump 2 is connected to the air storage tank through a pipeline. The other structures are the same as those in Example 1.

[0026] like Figure 4 As shown, the anti-overspeed device 4 in Example 1 is composed of a fixed cone sleeve 401, a movable cone sleeve 402 and a tension spring. The anti-overspeed device 4 in Example 3 includes a fixed inner gear sleeve 405, a sleeve 406 and a cylindrical pin 407. A sleeve 406 is fixedly installed on the main shaft 102. The sleeve 406 is provided with a plurality of circular holes evenly arranged in a circumferential shape around the sleeve 406. A cylindrical pin 407 is installed in each circular hole. The cylindrical pin 407 is connected to the main shaft 102. The inner end of the tension spring is fixed on the main shaft 102, and the outer end is connected to the inner end of the cylindrical pin 407. The bracket 103 is equipped with a fixed inner gear sleeve 405. The inner wall of the fixed inner gear sleeve 405 is provided with a number of cylindrical and evenly distributed tooth grooves. When the wind turbine 1 is overspeeding, the centrifugal force on the cylindrical pin 407 exceeds the tension of the tension spring 2, and the cylindrical pin 407 is thrown out to contact the tooth groove of the fixed inner gear sleeve 405, generating friction, and decelerating the wind turbine 1. When the wind turbine 1 is overspeeding too much, the cylindrical pin 407 is thrown out and embedded in the tooth groove of the fixed inner gear sleeve 405, directly braking the wind turbine 1.

[0027] like Figure 5As shown, the anti-overspeed device 4 in embodiment 1 has a complex structure, so a relatively simple structure is used in embodiment 4 to achieve the above functions. The anti-overspeed device 4 in embodiment 4 includes a spoiler 409 and a torsion spring 408. The tip of the blade 108 of the horizontal axis wind rotor 101 is provided with a spoiler 409, the spoiler 409 is hinged to the tip of the blade 108, and a torsion spring 408 is arranged between the spoiler 409 and the blade 108. The torsion spring 408 presses the spoiler 409 against the tip of the blade 108. When the wind turbine 1 is overspeeding, the spoiler 409 overcomes the pressure of the torsion spring 408 by centrifugal force and stands up to face the wind. At this time, the spoiler 409 provides resistance when the wind turbine 1 rotates to prevent the wind turbine 1 from overspeeding.

[0028] It should be noted that the specific embodiments of the present invention have been described in detail. For those skilled in the art, various obvious changes to the present invention without departing from the spirit and scope of the present invention are within the protection scope of the present invention.

Claims

1. A wind-driven air compressor with an overspeed prevention function, comprising a wind turbine (1), wherein the wind turbine (1) is a horizontal-axis wind turbine, comprising a horizontal-axis wind rotor (101), a main shaft (102) and a bracket (103), wherein the bracket (103) is rotatably connected to the main shaft (102), and one end of the main shaft (102) is fixedly connected to the horizontal-axis wind rotor (101); characterized in that: The wind turbine (1) further comprises an overspeed prevention device (4), a speed increasing transmission device (3) and an air pump (2); the other end of the main shaft (102) is connected to the air pump (2) via the speed increasing transmission device (3); the air pump (2) is mounted on the bracket (103); the bracket (103) is rotatably connected to the upper end of the tower (5); the air pump (2) is connected to the air storage tank via a pipeline and a pneumatic rotary joint (503); the wind turbine (1) is mounted with an overspeed prevention device (4); the overspeed prevention device (4) comprises a fixed cone sleeve (401) and a movable cone sleeve (402); the fixed cone sleeve (401) is mounted on the bracket (103); an annular groove is provided on the fixed cone sleeve (401); the inner end of the annular groove is The opening size is wider than the size of the bottom of the outer end groove, and its longitudinal section is conical; a plurality of guide rods (403) are installed on the main shaft (102), and the inner end of the movable cone sleeve (402) is provided with a guide hole, and the guide rod (403) is inserted into the guide hole of the movable cone sleeve (402); the inner end of the movable cone sleeve (402) is connected to the main shaft (102) through a tension spring, and the movable cone sleeve (402) is placed in the annular groove of the fixed cone sleeve (401); the speed increasing transmission device (3) is a belt transmission device, and the belt transmission device includes a driving pulley (303), a driven pulley (301) and a belt (302), and the diameter of the driving pulley (303) is larger than that of the driven pulley (301). The main shaft (102) is connected to the driving pulley (303), the driven pulley (301) is connected to the input shaft of the air pump (2), and the driving pulley (303) and the driven pulley (301) are connected via a belt (302); the tower (5) and the gas storage tank are an integrated structure, the lower end of the bracket (103) is connected to the connecting tube (502), the pivot (501) is provided with an axial vent hole, the lower end of the pivot (501) is connected to the air inlet pipe of the gas storage tank, and the pivot (501) is rotatably connected to the connecting tube (502); the upper end of the pivot (501) is connected to the pneumatic rotary joint (503), and the pneumatic rotary joint (503) is connected to the air pump (2) via a pipeline. The anti-overspeed device (4) further comprises a spoiler (409) and a torsion spring (408). The tip of the blade (108) of the horizontal-axis wind wheel (101) is provided with a spoiler (409). The spoiler (409) is hinged to the tip of the blade (108). A torsion spring (408) is provided between the spoiler (409) and the blade (108). The torsion spring (408) presses the spoiler (409) down against the tip of the blade (108). When the wind turbine (1) is overspeeding, the spoiler (409) overcomes the pressure of the torsion spring (408) by centrifugal force and stands up to face the wind. At this time, the spoiler (409) provides resistance when the wind turbine (1) rotates, thereby preventing the wind turbine (1) from overspeeding.

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