CN110778458A - Wind-driven air compressor with overspeed prevention function - Google Patents

Abstract

A wind-driven air compressor with an anti-overspeed function 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 to drive the air compressor to generate compressed air. Including a wind turbine, the wind turbine is a horizontal axis wind turbine, including a horizontal axis wind wheel, a main shaft and a bracket, the bracket is rotatably connected with the main shaft, and one end of the main shaft is fixedly connected with the horizontal axis wind wheel; it is characterized in that: it also includes an anti-overspeed device , speed-increasing transmission device and air pump, the other end of the main shaft is connected with the air pump through the speed-increasing transmission device, the air pump is installed on the bracket, the bracket is rotatably connected with the upper end of the tower, and the air pump is sequentially connected with the air storage tank through the pipeline and the pneumatic rotary joint ; The inner end of the movable taper sleeve is connected with the main shaft through a tension spring. The wind wheel is driven by the wind to rotate, and the wind wheel drives the air pump to work through the main shaft and the transmission speed-increasing device in turn, which realizes the safe production of compressed air without using electricity at all.

Description

Wind driven air compressor with anti-overspeed function

technical field

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 technique

At present, the air compressors used in industrial and agricultural production usually use electric motors to drive the air pumps to generate compressed air, which involves the application of electric power and control. In some occasions, the use of electric power may not be desired. Problems in the erection and maintenance of transmission lines. For example, in agricultural production, water pumps are used for farmland irrigation. In order to avoid the application of electricity, pneumatic water pumps can be used. Based on the abundance of wind resources in some areas, a device that uses wind energy to generate compressed air has been developed to drive the water pump.

In the prior art, a cam is usually installed at the end of the main shaft of a horizontal-axis wind turbine, and several plunger air pumps are installed around the cam. The plunger air pumps generate compressed air to drive a remote water pump to lift water. Due to the use of cams, the technology has large radial dimensions, large vibration noise and heat generation. Therefore, the structure is complex and maintenance is difficult. At the same time, there is the problem of the wind turbine overspeeding all the time.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a wind-driven air compressor with an anti-overspeed function in view of the above deficiencies of the prior art, so as to achieve the purpose of preventing the wind turbine from over-speeding.

A wind-driven air compressor with anti-overspeed function provided by the present invention includes a wind turbine, and the wind turbine is a horizontal-axis wind turbine, including a horizontal-axis wind wheel, a main shaft and a bracket, and the bracket is rotatably connected to the main shaft, and the main shaft is rotatably connected to the main shaft. One end is fixedly connected with 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 with the air pump through the speed-increasing transmission device, the air pump is installed on the bracket, and the bracket is connected to the tower. The upper end of the wind turbine is rotated and connected, and the air pump is connected to the air storage tank through pipelines and pneumatic rotary joints in turn; an anti-overspeed device is installed on the wind turbine, and the anti-overspeed device includes a fixed cone sleeve and a movable cone sleeve, and the fixed cone sleeve is installed on the bracket. , There is an annular groove on the fixed cone sleeve, the inner end opening of the annular groove is wider than the outer end groove bottom size, and its longitudinal section is tapered; the inner end of the movable cone sleeve is connected with the main shaft through a tension spring, and the movable cone sleeve is placed in the in the annular groove of the fixed taper sleeve.

The above-mentioned speed-increasing transmission device is a belt transmission device, and the belt transmission device 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 with the driving pulley, and the driven pulley is connected with the input shaft of the air pump, The driving pulley and the driven pulley are connected by a belt.

The above-mentioned tower cylinder and the gas storage tank are integrated in structure, the lower end of the bracket is connected with the connecting cylinder, the pivot shaft is provided with an axial ventilation hole, the lower end of the pivot shaft is connected with the air inlet pipe of the gas storage tank, and the pivot shaft is rotatably connected with the connecting cylinder; The upper end of the shaft is connected with the pneumatic rotary joint, and the pneumatic rotary joint is connected with the air outlet of the air pump through the pipeline.

A plurality of guide rods are installed on the above-mentioned main shaft, the inner end of the movable cone sleeve is provided with a guide hole, and the guide rod is inserted into the guide hole of the movable cone sleeve.

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

1. The present invention can be applied to small wind turbines. Due to the high rotational speed, the rated rotational speed of the air pump can be achieved by using a simple speed-increasing transmission device. As long as there is a certain wind power, the air pump can be started to work;

2. The present invention drives the wind wheel to rotate through the wind, and the wind wheel drives the air pump to work through the main shaft and the transmission speed increasing device in turn, and realizes the safe production of compressed air without using electricity at all.

Description of drawings

FIG. 1 is a schematic structural diagram of Embodiment 1 of the present invention.

FIG. 2 is a schematic structural diagram of a part of an overspeed preventing device in Embodiment 1 of the present invention.

FIG. 3 is a schematic structural diagram of Embodiment 2 of the present invention.

4 is a schematic structural diagram of a portion of an overspeed preventing device in Embodiment 3 of the present invention.

5 is a schematic structural diagram of a portion of an overspeed preventing device in Embodiment 4 of the present invention.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

As shown in FIG. 1 , Embodiment 1 includes a wind turbine 1 , an anti-overspeed device 4 , a speed-increasing transmission device 3 and an air pump 2 .

In Example 1, the wind turbine 1 is a horizontal-axis wind turbine, including a horizontal-axis wind wheel 101, a main shaft 102, a bracket 103 and a yaw device 104, and two ends of the bracket 103 are respectively fixed with a bearing seat, and the bearing seat is installed in the bearing seat. Bearings are provided. Both ends of the main shaft 102 are fixedly connected to the inner ring of the bearing on the bearing seat respectively.

A yaw device 104 is installed on the wind turbine 1 . The yaw device 104 in this embodiment is a wind deflector, and the lower end of the bracket 103 is fixedly connected to the wind deflector.

In this embodiment, the speed-increasing transmission device 3 is a belt transmission device. The belt transmission device includes a driving pulley 303, a driven pulley 301 and a belt 302. The diameter of the driving pulley 303 is larger than that of the driven pulley 301. The pulley 303 is fixedly connected, the driven pulley 301 is fixedly connected with the input shaft of the air pump 2 , and the driving pulley 303 and the driven pulley 301 are connected by a belt 302 . The speed-increasing transmission device 3 can also be a chain transmission device or a gear transmission device.

The air pump 2 is fixedly installed on the support 103, and the support 103 is rotatably connected with the upper end of the tower cylinder 5. The air pump 2 is connected to the air storage tank through the pipeline and the pneumatic rotary joint 503 in turn. In this embodiment, the tower cylinder 5 is connected to the air storage tank. One-piece structure, the lower end of the bracket 103 is fixedly connected with the connecting cylinder 502, the pivot shaft 501 is provided with an axial ventilation hole, the lower end of the pivot shaft 501 is fixedly connected with the air intake pipe of the air storage tank, and the cavity of the connecting cylinder 502 is fixedly installed with a bearing The pivot shaft 501 is fixedly connected with the bearing inner ring of the bearing seat in the connecting cylinder 502 . The upper end of the pivot shaft 501 is connected with the pneumatic rotary joint 503, and the pneumatic rotary joint 503 is connected with the air outlet of the air pump 2 through a pipeline.

As shown in FIG. 2 , an anti-overspeed device 4 is installed on the wind turbine 1 , which can prevent the wind turbine 1 from rotating too fast to cause a speeding 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, and the inner end opening of the annular groove is wider than the outer end groove. Bottom dimension, the longitudinal section is tapered. The main shaft 102 is provided with a plurality of guide rods 403 evenly arranged in a circular shape, each guide rod 403 is connected with a movable cone sleeve 402, the inner end of the movable cone sleeve 402 is provided with a guide hole, and the guide rods 403 are inserted into the movable cone sleeve. In the guide hole of 402 , the inner end of the movable cone sleeve 402 is connected with 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 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 gas tank. When the wind turbine 1 rotates at an overspeed, the movable cone sleeve 402 is thrown out against the tension of the tension spring by the excessive centrifugal force, moves to the outer end of the annular groove of the fixed cone sleeve 401, wedged into the annular groove of the fixed cone sleeve 401, The tapered surface of the annular groove of the fixed tapered sleeve 401 is rubbed and decelerated, so that the rotational speed of the wind turbine 1 can be stabilized and the occurrence of flying cars can be avoided.

As shown in FIG. 3 , in Embodiment 1, the wind turbine 1 adopts a horizontal-axis wind turbine, while in Embodiment 2, the wind turbine 1 adopts a vertical-axis wind turbine. The vertical axis wind turbine includes a vertical axis wind wheel 106, a tower 105 and a transmission shaft 107. A bearing seat is fixedly installed on the tower 105, and the transmission shaft 107 is rotatably connected to the tower 105 through the bearing seat. The vertical axis wind wheel 106 is connected, the lower end is connected with the input shaft of the steering transmission box 6 through the speed-increasing transmission 3, the output shaft of the steering transmission box 6 is connected with the input shaft of the air pump 2, and the steering transmission box 6 and the air pump 2 are installed on the tower frame 105, the air outlet pipe of the air pump 2 is connected to the air storage tank through a pipeline. Other structures are the same as those of Embodiment 1.

As shown in FIG. 4 , the anti-overspeed device 4 in Embodiment 1 is composed of parts such as a fixed cone sleeve 401, a movable cone sleeve 402 and a tension spring, and the anti-overspeed device 4 in Embodiment 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, a number of circular holes are arranged around the sleeve 406 evenly arranged in a circular shape, and a cylindrical pin 407 is installed in each circular hole, and the cylindrical pin 407 passes through the main shaft 102. The tension spring is connected, the inner end of the tension spring is fixed on the main shaft 102, the outer end is connected with the inner end of the cylindrical pin 407, the fixed inner gear sleeve 405 is installed on the bracket 103, and the inner wall of the fixed inner gear sleeve 405 is provided with several cylindrical Evenly distributed tooth slots, when the wind turbine 1 is overspeeding, the centrifugal force received by the cylindrical pin 407 exceeds the pulling force of the tension spring 2, and is thrown out and contacts the tooth slots of the fixed inner gear sleeve 405, generating frictional force to decelerate the wind turbine 1 . When the wind turbine 1 overspeeds too much, the cylindrical pin 407 is thrown out and embedded in the tooth slot of the fixed inner gear sleeve 405 to directly brake the wind turbine 1 .

As shown in FIG. 5 , the structure of the anti-overspeed device 4 in Embodiment 1 is complicated, so that in Embodiment 4, a relatively simple structure is adopted to realize the above functions. The anti-overspeed device 4 in the fourth embodiment includes a spoiler 409 and a torsion spring 408. The tip of the blade 108 of the horizontal axis wind wheel 101 has a spoiler 409, and the spoiler 409 is hinged with the tip of the blade 108. The spoiler There is a torsion spring 408 between 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 stands up against the pressure of the torsion spring 408 by centrifugal force and faces the wind. , at this time, the spoiler 409 provides resistance when the wind turbine 1 rotates, preventing the wind turbine 1 from overspeeding.

It should be noted that the specific embodiments of the present invention have been described in detail, and for those skilled in the art, various obvious changes can be made to it without departing from the spirit and scope of the present invention. within the protection scope of the present invention.

Claims (4)

1. A wind driven air compressor with an anti-overspeed function, comprising a wind turbine (1), the wind turbine (1) being a horizontal axis wind turbine, comprising a horizontal axis wind wheel (101), a main shaft (102) and a bracket (103), the bracket (103) is rotatably connected with the main shaft (102), and one end of the main shaft (102) is fixedly connected with the horizontal axis wind wheel (101); it is characterized in that: it also includes an anti-overspeed device (4), a speed-increasing transmission device (3) and the air pump (2), the other end of the main shaft (102) is connected to the air pump (2) through the speed-increasing transmission device (3), the air pump (2) is installed on the bracket (103), and the bracket (103) is connected to the tower The upper end of the cylinder (5) is rotatably connected, and the air pump (2) is sequentially connected to the air storage tank through a pipeline and a pneumatic rotary joint (503); The device (4) includes a fixed cone sleeve (401) and a movable cone sleeve (402), the fixed cone sleeve (401) is mounted on the bracket (103), and the fixed cone sleeve (401) is provided with an annular groove, and the inner end of the annular groove The size of the opening is wider than the size of the groove bottom at the outer end, and its longitudinal section is tapered; the inner end of the movable taper sleeve (402) is connected with the main shaft (102) through a tension spring, and the movable taper sleeve (402) is placed on the fixed taper sleeve (401) in the annular groove. 2. A wind-driven air compressor with anti-overspeed function according to claim 1, characterized in that: the speed-increasing transmission device (3) is a belt transmission device, and the belt transmission device comprises a driving pulley (303), The driven pulley (301) and the belt (302), the diameter of the driving pulley (303) is larger than the diameter of the driven pulley (301), the main shaft (102) is connected with the driving pulley (303), and the driven pulley (301) is connected with the air pump ( 2) The input shaft is connected, and the driving pulley (303) is connected with the driven pulley (301) through the belt (302). 3. A wind-driven air compressor with anti-overspeed function according to claim 1, characterized in that: the tower (5) and the gas storage tank are integrally constructed, and the lower end of the bracket (103) is connected to the connecting cylinder (502) is connected, the pivot (501) is provided with an axial ventilation hole, the lower end of the pivot (501) is connected with the air intake pipe of the air storage tank, and the pivot (501) is rotatably connected with the connecting cylinder (502); The upper end of 501) is connected with the pneumatic rotary joint (503), and the pneumatic rotary joint (503) is connected with the air outlet of the air pump (2) through a pipeline. The wind-driven air compressor with anti-overspeed function according to claim 1, characterized in that: a plurality of guide rods (403) are installed on the main shaft (102), and the movable cone sleeve (402) has a The inner end is provided with a guide hole, and the guide rod (403) is inserted into the guide hole of the movable cone sleeve (402).

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