Angle-variable umbrella-shaped wind power device and umbrella-shaped wind energy conversion system

Abstract

The present invention relates to the field of high-altitude wind energy, and discloses an angle-variable umbrella-type wind power device and an umbrella-type wind energy conversion system. The umbrella-type wind power device comprises a cable, an umbrella canopy and an umbrella rope, the cable is suspended in the air and forms a pitch angle with the ground, and the edge of the umbrella canopy is connected to the cable through the umbrella rope. The umbrella-type wind power device also comprises an adjustment device, which is used to change the deviation angle of the umbrella canopy relative to the cable, so that the cable is subjected to a force deviating from its axis, and the pitch angle of the cable relative to the ground is adjusted. This scheme is used to solve the problem of adjusting the pitch angle of the cable, so as to achieve the effect of improving the working efficiency of the umbrella-type wind energy conversion system.

Description

Technical Field

[0001] The present invention relates to the field of high altitude wind energy, and more specifically, to an angle-variable umbrella-shaped wind power device and an umbrella-shaped wind energy conversion system. Background Art

[0002] Wind energy is a clean renewable energy source. Making full use of high-altitude wind energy for human use has always been a hot topic of concern to scientific researchers. The characteristics of high-altitude wind and high-altitude wind energy are: high wind speed, high average energy density, wide geographical distribution, high stability, and continuous all year round. The use of high-altitude wind energy is to collect wind energy at high altitudes, convert wind energy into mechanical energy, and finally convert mechanical energy into electrical energy or other forms of energy.

[0003] The collection and utilization of high-altitude wind energy is an emerging research field worldwide. The difficulty of collecting and controlling high-altitude wind energy has led to the small and unstable electricity generated by many ordinary high-altitude wind power systems. There are two main ways to use high-altitude wind energy to generate electricity in the world: one is to suspend the generator in the air; the other is to set the generator on the ground. The power generation system with the generator suspended in the air is restricted by factors such as the weight and volume of the air system cannot be too large. The air part of the power generation system with the generator suspended in the air cannot achieve good control and large-capacity power generation. The generator of the high-altitude kite-type power generation is set on the ground, but the kite of the kite-type high-altitude wind power generation system is both a balancing body and a working body. The balance and work affect each other and cannot achieve a good work effect.

[0004] A Chinese patent with publication number CN102220938B discloses an umbrella-type wind power device and a wind power system, wherein the umbrella-type wind power device comprises a working rope, a working parachute, a balancing parachute and a lift guide. The working parachute opens under the action of wind and pulls the working rope upward to achieve work, i.e., wind energy conversion. The wind power system comprises the above-mentioned umbrella-type wind power device, a winch and a working device. The winch is connected to the umbrella-type wind power device, and the output shaft of the winch is connected to the working device and provides power for the working device. The umbrella-type wind power device of the patent is easy to control, and the opening and closing of the working parachute will not affect the stability of the aerial balancing system. The aerial part of the wind power system mounted on the umbrella-type wind power device has good stability and control performance, and the stability performance of the working machinery transmitting energy on the ground part has been greatly improved.

[0005] However, the above-mentioned umbrella-type wind power device and wind power system have the following shortcomings: the working parachute and the balance parachute can only provide a force along the axial direction of the working rope, and the lift guide body can only provide a force in the vertical upward direction, so the pitch angle of the cable relative to the ground, that is, the posture of the cable cannot be effectively controlled. When the wind force is small, the working rope is approximately 90° perpendicular to the ground; when the wind force is large, the posture of the cable is relatively inclined and the pitch angle is small. The pitch angle of the working rope depends on the external wind environment. On the other hand, under the premise that the installation angle between the working parachute and the working rope is fixed, when the working rope has different pitch angles, the effective windward area of ​​the working parachute during the opening and rising process is also different accordingly. When the effective windward area of ​​the working parachute is the largest, the working parachute can obtain the maximum working efficiency. In order to improve the working power of the working parachute, the pitch angle of the cable needs to become controllable. Therefore, the prior art requires a device that can adjust the pitch angle of the cable. Summary of the invention

[0006] The present invention aims to overcome at least one of the deficiencies of the above-mentioned prior art and provide an angle-variable umbrella-shaped wind power device and an umbrella-shaped wind energy conversion system, which are used to solve the problem of adjusting the pitch angle of the cable and achieve the effect of improving the working efficiency of the umbrella-shaped wind energy conversion system.

[0007] The technical solution adopted by the present invention is an angle-variable umbrella-type wind power device, comprising a cable, an umbrella canopy and an umbrella rope, wherein the cable is suspended in the air and forms a pitch angle with the ground, and the edge of the umbrella canopy is connected to the cable through the umbrella rope. The umbrella-type wind power device also includes an adjustment device, which is used to change the deviation angle of the umbrella canopy relative to the cable, so that the cable is subjected to a force deviating from its axis, and the pitch angle of the cable relative to the ground is adjusted.

[0008] In this solution, the deviation angle of the umbrella canopy relative to the cable is the angle between the central axis of the umbrella canopy and the axis of the cable. Taking the junction of the umbrella rope and the cable as an example for force analysis, the upward pulling force applied by the cable to the junction along its axis direction is the first force. The upward pulling force applied by the umbrella rope to the junction is the second force. The direction of the second force is the same as the direction of the force generated by the umbrella canopy under the action of wind. The direction of the force generated by the umbrella canopy under the action of wind is approximately the direction of the central axis of the umbrella canopy. Since the umbrella canopy has a deviation angle relative to the cable, the second force has the same deviation angle relative to the first force. The resultant force of the first force and the second force is the third force. Obviously, the direction of the third force deviates from the direction of the first force, that is, the direction of the third force does not coincide with the axis direction of the cable. Therefore, the cable begins to deflect under the drive of the third force, thereby changing its pitch angle with the ground. The adjusting device continuously changes the deviation angle of the umbrella canopy relative to the cable, and then continuously changes the direction of the second force. When the direction of the third force coincides with the axial direction of the cable, the cable reaches a new equilibrium state, and the cable has a new pitch angle. It can be obtained that the pitch angle between the cable and the ground depends on the angle between the third force and the ground, and the direction of the third force depends on the direction of the second force, and finally the direction of the second force depends on the deviation angle of the umbrella canopy relative to the cable. The deviation angle of the umbrella canopy relative to the cable can be linearly adjusted by the adjusting device. Therefore, this scheme uses the adjusting device to controllably change the deviation angle of the umbrella canopy relative to the cable, so that the cable is deflected under the drive of the third force, thereby solving the problem of adjusting the pitch angle of the cable.

[0009] Preferably, the adjustment device includes a first driver, an adjustment rope and a first hinge; the first driver is installed on the top of the umbrella canopy, one end of the adjustment rope is reeled in the first driver, and the other end of the adjustment rope is fixed to the cable; or the first driver is installed on the cable, one end of the adjustment rope is reeled in the first driver, and the other end of the adjustment rope is fixed to the top of the umbrella canopy; the first hinge is located below the umbrella canopy, and the first hinge is used to connect the umbrella rope and the cable so that the two can rotate relative to each other.

[0010] In this solution, the first driver can be arranged on the top of the umbrella canopy or on the cable. The first driver reels the adjustment rope. A triangle is formed between the adjustment rope, the cable, the umbrella canopy and the rope. When the first driver increases the extended length of the adjustment rope, under the action of wind and gravity, the umbrella canopy rotates around the first hinge and moves away from the cable, and the deviation angle of the umbrella canopy relative to the cable increases; when the first driver retracts the extended length of the adjustment rope, the adjustment rope pulls the umbrella canopy close to the cable, and the deviation angle of the umbrella canopy relative to the cable decreases. The maximum extended length of the adjustment rope determines the maximum deviation angle of the umbrella canopy relative to the cable. By recording the extended length of the adjustment rope, the first driver can calculate the deviation angle of the umbrella canopy relative to the cable, thereby realizing the controllable adjustment of the deviation angle of the umbrella canopy by the adjustment device.

[0011] Furthermore, the first hinge includes a locker, which is used to fix the angle between the umbrella rope and the cable. Since the adjustment rope can only provide tension after extending from the first driver, when there is wind interference, the umbrella surface may repeatedly swing around the first hinge through the umbrella rope within the deviation angle range it has, thereby affecting the reliable control of the deviation angle of the umbrella surface by the adjustment device. The built-in locker on the first hinge can effectively fix the angle of the umbrella rope relative to the cable, thereby preventing the umbrella surface from repeatedly swinging.

[0012] Optionally, the adjustment device is a servo motor, which is installed on the cable below the umbrella, and the output shaft of the servo motor is fixedly connected to the umbrella rope. The servo motor is installed at the junction of the umbrella rope and the cable. The servo motor can obtain the rotation angle between the umbrella rope and the cable by controlling the rotation angle of its output shaft, and then calculate the deviation angle of the umbrella relative to the cable, so as to realize the controllable adjustment of the deviation angle of the umbrella by the adjustment device.

[0013] Optionally, the adjusting device includes a second driver, a third driver, a second hinge and a third hinge; the second driver and the third driver are installed on the cable below the umbrella canopy; the second hinge and the third hinge are installed on the edge of the umbrella canopy; one end of a portion of the umbrella rope is rolled up on the second driver, and the other end thereof is connected to the umbrella canopy via the second hinge; one end of a portion of the umbrella rope is rolled up on the third driver, and the other end thereof is connected to the umbrella canopy via the third hinge.

[0014] In this scheme, the parachute ropes are divided into two groups, the first group connects the parachute and the cable on one side through the second driver and a plurality of second hinges, and the second group connects the parachute and the cable on the other side through the third driver and a plurality of third hinges. The second driver reels the first group of parachute ropes, and the third driver reels the second group of parachute ropes. The cable passes through the center of the parachute rope. When the lengths of the first group of parachute ropes and the second group of parachute ropes are the same, the central axis of the parachute rope coincides with the axis of the cable, and the deviation angle of the parachute rope relative to the cable is zero. When the first group of parachute ropes is longer than the second group of parachute ropes, the angle between the central axis of the parachute rope and the axis of the cable is a positive angle, the deviation angle of the parachute rope is a positive deviation angle, the cable posture will be more inclined, and the pitch angle of the cable will become smaller; when the first group of parachute ropes is shorter than the second group of parachute ropes, the angle between the central axis of the parachute rope and the axis of the cable is a negative angle, the deviation angle of the parachute rope is a negative deviation angle, the cable posture will be more vertical, and the pitch angle of the cable will become larger. The difference in length between the first group of parachute ropes and the second group of parachute ropes determines the maximum deviation angle of the parachute relative to the cable. The second driver and the third driver can calculate the deviation angle of the parachute relative to the cable by recording the extension lengths of the first group of parachute ropes and the second group of parachute ropes respectively, thereby realizing controllable adjustment of the deviation angle of the parachute by the adjustment device.

[0015] Optionally, it also includes a solar film, which covers the upper surface of the umbrella surface and is used to collect solar energy to generate electricity and supply power to the regulating device.

[0016] Optionally, it also includes a wind power generation device, which is embedded and installed on the umbrella surface, and is used to collect wind energy to generate electricity and supply power to the regulating device.

[0017] The present invention also provides an umbrella-type wind energy conversion system, comprising a lift guide, a work parachute ladder and a work device, wherein the lift guide is used to fix the top end of the connecting cable; the work parachute ladder is used to connect to the cable to collect high-altitude wind energy and convert it into mechanical energy; the work device is used to be installed on the ground to collect the mechanical energy transmitted by the cable. The system adopts the above-mentioned umbrella-type wind power device with variable angle.

[0018] The umbrella-type wind energy conversion system of this scheme adopts an angle-variable umbrella-type wind power device as a balance umbrella, so that the pitch angle of the cable relative to the ground can be controlled and adjusted, so that the working parachute ladder on the cable can always obtain the maximum effective windward area, thereby achieving the effect of improving the working efficiency of the umbrella-type wind energy conversion system. Specifically, the vertical upward pulling force applied by the lift guide body to the cable and the second force applied by the umbrella face to the cable jointly determine the pitch angle of the cable. When the deviation angle of the umbrella surface relative to the cable is zero, the cable posture will gradually become vertical, and the pitch angle of the cable will gradually return to 90°; when the umbrella surface has a positive deviation angle relative to the cable, the cable posture will gradually tilt, and the cable will have a fixed pitch angle after balancing; when the positive deviation angle of the umbrella surface relative to the cable increases, the cable posture will be more inclined, and the pitch angle of the cable will become smaller. The system obtains the wind direction around the power parachute ladder, calculates the optimal cable pitch angle and adjusts it through the adjustment device to maximize the effective windward area of ​​the power parachute ladder, thereby improving the power efficiency of the power parachute ladder.

[0019] Furthermore, the active parachute ladder includes at least one of a first active parachute, a second active parachute and a third active parachute; the first active parachute changes the windward area by opening and closing its own umbrella; the second active parachute changes its windward area by adjusting the opening size of its own umbrella; the third active parachute changes its windward area by adjusting the angle of its own umbrella.

[0020] In this scheme, the angle-variable umbrella-type wind power device can be further transformed into a third working umbrella. The aerial posture of the working umbrella can be understood as the tilt of its umbrella in the air. The umbrella of the third working umbrella can be swingably connected to the cable, and the aerial posture of the umbrella can be changed by driving the adjusting device, thereby changing its effective windward area, overcoming the defect that a single working umbrella has only a single windward area, and improving the flexibility of adjusting the total windward area of ​​the working umbrella ladder. The windward area has a continuously adjustable range, and the system output is more stable; on the other hand, the third working umbrella does not need to be opened and closed, and is free from the limitation of the umbrella opening and closing device on the size of the umbrella-type wind power device. It can be set to a larger diameter, and the upper limit of the windward area of ​​a single working umbrella can be increased, thereby improving the wind energy conversion efficiency. A working method of the third working umbrella is as follows: the third working umbrella increases its effective windward area through the adjusting device, and pulls the cable to complete the upward work; after rising to the upper limit position of the working, the third working umbrella reduces its effective windward area through the adjusting device, and completes the downward recovery under its own gravity and the pull of the cable.

[0021] Furthermore, the working device includes a hoist device and a generator, the hoist device is used to reel in the bottom end of the cable; the cable pulls the hoist device to rotate, thereby driving the generator to generate electricity.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The umbrella-type wind power device of this solution can controllably change the deviation angle of the umbrella surface relative to the cable through the adjustment device, so that the cable is deflected under the drive of the third force, thereby solving the problem of adjusting the pitch angle of the cable. The umbrella-type wind energy conversion system of this solution adopts an angle-variable umbrella-type wind power device as a balance umbrella, so that the pitch angle of the cable relative to the ground can be controlled and adjusted, so that the working parachute ladder on the cable can always obtain the maximum effective windward area, thereby achieving the effect of improving the working efficiency of the umbrella-type wind energy conversion system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of Example 1 of the present invention when the umbrella canopy and the cable have a small deviation angle.

[0025] Figure 2 This is a schematic diagram of the structure of Example 1 of the present invention when the umbrella canopy and the cable are at a large deviation angle.

[0026] Figure 3 It is a force analysis diagram of the joining point of the parachute rope and the cable of the present invention.

[0027] Figure 4 This is a structural diagram of Example 2 of the present invention when the umbrella canopy and the cable have a zero deviation angle.

[0028] Figure 5 This is a structural diagram of Example 2 of the present invention when the umbrella canopy and the cable are at a positive deviation angle.

[0029] Figure 6 This is a schematic diagram of the structure of Example 3 of the present invention.

[0030] Figure 7 This is a schematic diagram of the work performed by the third work-performing umbrella according to Embodiment 3 of the present invention.

[0031] Description of reference numerals: umbrella-type wind power device 100, cable 10, umbrella canopy 20, umbrella rope 30, adjustment device 40, first driver 41, second driver 42, third driver 43, first hinge 44, second hinge 45, third hinge 46, adjustment rope 47;

[0032] A lift guide body 200 , a work-performing parachute ladder 300 , a first work-performing parachute 310 , a second work-performing parachute 320 , a third work-performing parachute 330 , and a work-performing device 400 . DETAILED DESCRIPTION

[0033] The drawings of the present invention are only for illustrative purposes and should not be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the drawings may be omitted.

[0034] Example 1

[0035] like Figure 1 , 2 As shown in Figures 3 and 4, this embodiment is an angle-variable umbrella-type wind power device, comprising a cable 10, an umbrella cover 20 and an umbrella rope 30. The cable 10 is suspended in the air and forms a pitch angle with the ground. The edge of the umbrella cover 20 is connected to the cable 10 through the umbrella rope 30. The umbrella-type wind power device also includes an adjustment device 40, which is used to change the deviation angle of the umbrella cover 20 relative to the cable 10, so that the cable 10 is subjected to a force deviating from its axis, and the pitch angle of the cable 10 relative to the ground is adjusted.

[0036] In this solution, the deviation angle of the umbrella canopy 20 relative to the cable 10 is the angle between the central axis of the umbrella canopy 20 and the axis of the cable 10. Taking the junction of the umbrella rope 30 and the cable 10 as an example for force analysis, the upward pulling force applied by the cable 10 to the junction along its axis direction is the first force. The upward pulling force applied by the umbrella rope 30 to the junction is the second force. The direction of the second force is the same as the direction of the force generated by the umbrella canopy 20 under the action of wind. The direction of the force generated by the umbrella canopy 20 under the action of wind is approximately the direction of the central axis of the umbrella canopy 20. Since the umbrella canopy 20 has a deviation angle relative to the cable 10, the second force has the same deviation angle relative to the first force. The resultant force of the first force and the second force is the third force. Obviously, the direction of the third force deviates from the direction of the first force, that is, the direction of the third force does not coincide with the axis direction of the cable 10. Therefore, the cable 10 begins to deflect under the drive of the third force, thereby changing its pitch angle with the ground. The adjusting device 40 continuously changes the deviation angle of the umbrella canopy 20 relative to the cable 10, and then continuously changes the direction of the second force. When the direction of the third force coincides with the axial direction of the cable 10, the cable 10 reaches a new equilibrium state, and the cable 10 has a new pitch angle. It can be obtained that the pitch angle between the cable 10 and the ground depends on the angle between the third force and the ground, and the direction of the third force depends on the direction of the second force, and finally the direction of the second force depends on the deviation angle of the umbrella canopy 20 relative to the cable 10. The deviation angle of the umbrella canopy 20 relative to the cable can be linearly adjusted by the adjusting device 40. Therefore, the present solution can controllably change the deviation angle of the umbrella canopy 20 relative to the cable 10 through the adjusting device 40, so that the cable is deflected under the drive of the third force, thereby solving the problem of adjusting the pitch angle of the cable 10.

[0037] Preferably, the adjustment device 40 includes a first driver 41, an adjustment rope 47 and a first hinge 44; the first driver 41 is installed on the top of the umbrella cover 20, one end of the adjustment rope 47 is reeled in the first driver 41, and the other end of the adjustment rope 47 is fixed to the cable 10; or the first driver 41 is installed on the cable 10, one end of the adjustment rope 47 is reeled in the first driver 41, and the other end of the adjustment rope 47 is fixed to the top of the umbrella cover 20; the first hinge 44 is located below the umbrella cover 20, and the first hinge 44 is used to connect the umbrella rope 30 and the cable 10 so that the two can rotate relative to each other.

[0038] In this solution, the first driver 41 can be arranged on the top of the umbrella 20 or on the cable 10. The first driver 41 reels the adjustment rope 47. A triangle is formed between the adjustment rope 47, the cable 10, the umbrella 20 and the umbrella rope 30. When the first driver 41 increases the extension length of the adjustment rope 47, under the action of wind and gravity, the umbrella 20 rotates around the first hinge 44 and moves away from the cable 10, and the deviation angle of the umbrella 20 relative to the cable 10 increases; when the first driver 41 retracts the extension length of the adjustment rope 47, the adjustment rope 47 pulls the umbrella 20 close to the cable 10, and the deviation angle of the umbrella 20 relative to the cable 10 decreases. The maximum extension length of the adjustment rope 47 determines the maximum deviation angle of the umbrella 20 relative to the cable 10. The first driver 41 can calculate the deviation angle of the umbrella 20 relative to the cable 10 by recording the extension length of the adjustment rope 47, thereby realizing the controllable adjustment of the deviation angle of the umbrella 20 by the adjustment device 40.

[0039] Furthermore, the first hinge 44 includes a locker, which is used to fix the angle between the parachute cord 30 and the cable 10. Since the adjustment cord 47 can only provide tension after extending from the first driver 41, when there is wind interference, the umbrella cover 20 may repeatedly swing around the first hinge 44 through the parachute cord 30 within the deviation angle range, thereby affecting the reliable control of the deviation angle of the umbrella cover 20 by the adjustment device 40. The built-in locker on the first hinge 44 can effectively fix the angle of the parachute cord 30 relative to the cable 10, thereby preventing the umbrella cover 20 from repeatedly swinging.

[0040] In this embodiment, the canopy 20 is a spherical surface. One end of the parachute rope 30 is evenly distributed on the circular edge of the canopy 20, and the other end of the parachute rope 30 converges at the junction of the parachute rope 30 and the cable 10, that is, on the first hinge 44. The first driver 41 is a small winch installed at the top of the canopy 20 near its center. When the adjustment rope 47 is completely reeled in the first driver 41, the cable 10 is embedded in the canopy 20, and the deviation angle of the canopy 20 relative to the cable 10 is not zero.

[0041] Optionally, a solar film is also included, which covers the upper surface of the umbrella surface 20 and is used to collect solar energy to generate electricity and supply power to the adjustment device 40.

[0042] Optionally, a wind power generation device is also included. The wind power generation device is embedded and installed on the umbrella surface 20. The wind power generation device is used to collect wind energy to generate electricity and supply power to the adjustment device 40.

[0043] Example 2

[0044] like Figure 4 , 5 As shown, this embodiment is an umbrella-shaped wind power device with variable angle, and the structure similar to that of embodiment 1 will not be described again.

[0045] Optionally, the adjusting device 40 includes a second driver 42, a third driver 43, a second hinge 45 and a third hinge 46; the second driver 42 and the third driver 43 are installed on the cable 10 below the umbrella canopy 20; the second hinge 45 and the third hinge 46 are installed on the edge of the umbrella canopy 20; one end of a portion of the umbrella rope 30 is rolled up on the second driver 42, and the other end thereof is connected to the umbrella canopy 20 via the second hinge 45; one end of a portion of the umbrella rope 30 is rolled up on the third driver 43, and the other end thereof is connected to the umbrella canopy 20 via the third hinge 46.

[0046] In this solution, the parachute cords 30 are divided into two groups, the first group connects the canopy 20 and the cable 10 on one side through the second driver 42 and a plurality of second hinges 45, and the second group connects the canopy 20 and the cable 10 on the other side through the third driver 43 and a plurality of third hinges 46. The second driver 42 reels the first group of parachute cords, and the third driver 43 reels the second group of parachute cords. The cable 10 passes through the center of the canopy 20. When the lengths of the first group of parachute cords and the second group of parachute cords are the same, the central axis of the canopy 20 coincides with the axis of the cable 10, and the deviation angle of the canopy 20 relative to the cable 10 is zero. When the first group of parachute ropes is longer than the second group of parachute ropes, the angle between the central axis of the canopy 20 and the axis of the cable 10 is a positive angle, the deviation angle of the canopy 20 is a positive deviation angle, the cable 10 will be more inclined, and the pitch angle of the cable 10 will become smaller; when the first group of parachute ropes is shorter than the second group of parachute ropes, the angle between the central axis of the canopy 20 and the axis of the cable 10 is a negative angle, the deviation angle of the canopy 20 is a negative deviation angle, the cable 10 will be more vertical, and the pitch angle of the cable 10 will become larger. The length difference between the first group of parachute ropes and the second group of parachute ropes determines the maximum deviation angle of the canopy 20 relative to the cable 10. The second driver 42 and the third driver 43 can calculate the deviation angle of the canopy 20 relative to the cable 10 by recording the extension lengths of the first group of parachute ropes and the second group of parachute ropes, respectively, so as to realize the controllable adjustment of the deviation angle of the canopy 20 by the adjustment device 40.

[0047] In this embodiment, the umbrella cover 20 is a spherical surface. One end of the umbrella rope 30 is evenly distributed on the circular edge of the umbrella cover 20 through the second hinge 45 and the third hinge 46, and the other end of the umbrella rope 30 is respectively rolled up by the second driver 42 and the third driver 43. The second driver 42 and the third driver 43 are both small winches.

[0048] Example 3

[0049] like Figure 6 As shown, this embodiment is an umbrella-type wind energy conversion system, comprising a lift guide 200, a work parachute ladder 300 and a work device 400, wherein the lift guide 200 is used to fix the top end of the connecting cable 10; the work parachute ladder 300 is used to be connected to the cable 10 to collect high-altitude wind energy and convert it into mechanical energy; the work device 400 is used to be installed on the ground to collect the mechanical energy transmitted by the cable 10. The system adopts the above-mentioned umbrella-type wind power device with variable angle.

[0050] The umbrella-type wind energy conversion system of the present invention adopts an angle-variable umbrella-type wind power device as a balance umbrella, so that the pitch angle of the cable 10 relative to the ground can be controlled and adjusted, so that the working parachute ladder 300 on the cable 10 can always obtain the maximum effective windward area, thereby achieving the effect of improving the working efficiency of the umbrella-type wind energy conversion system. Specifically, the vertical upward pulling force applied by the lift guide 200 to the cable 10 and the second force applied by the umbrella 20 to the cable 10 jointly determine the pitch angle of the cable 10. When the deviation angle of the umbrella 20 relative to the cable 10 is zero, the posture of the cable 10 will gradually become vertical, and the pitch angle of the cable 10 will gradually return to 90°; when the umbrella 20 has a positive deviation angle relative to the cable 10, the posture of the cable 10 will gradually tilt, and the cable 10 will have a fixed pitch angle after balancing; when the positive deviation angle of the umbrella 20 relative to the cable 10 increases, the posture of the cable 10 will be more inclined, and the pitch angle of the cable 10 will become smaller. The system obtains the wind direction around the working parachute ladder 300, calculates the optimal pitch angle of the cable 10 and adjusts it through the adjustment device 40 to maximize the effective windward area of ​​the working parachute ladder 300, thereby improving the working efficiency of the working parachute ladder 300.

[0051] Furthermore, the active parachute ladder 300 includes at least one of a first active parachute 310, a second active parachute 320 and a third active parachute 330; the first active parachute 310 changes the windward area by opening and closing its own umbrella; the second active parachute 320 changes the windward area by adjusting the opening size of its own umbrella; the third active parachute 330 changes the windward area by adjusting the angle of its own umbrella.

[0052] like Figure 7As shown, in this solution, the angle-variable umbrella-type wind power device 100 can be further transformed into a third working umbrella 330. The aerial posture of the working umbrella can be understood as the tilt of its umbrella cover 20 in the air. The umbrella cover 20 of the third working umbrella 330 is swingably connected to the cable 10, and the aerial posture of the umbrella cover 20 is changed by the drive of the adjustment device 40, thereby changing its effective windward area, overcoming the defect that a single working umbrella has only a single windward area, and improving the flexibility of adjusting the total windward area of ​​the working umbrella ladder 300. The windward area has a continuously adjustable range, and the system output is more stable; on the other hand, the third working umbrella 330 does not need to be opened and closed, and is free from the limitation of the umbrella cover opening and closing device on the size of the umbrella-type wind power device. It can be set to a larger diameter, increasing the upper limit of the windward area of ​​a single working umbrella, thereby improving the wind energy conversion efficiency. One working method of the third working parachute 330 is as follows: the third working parachute 330 increases its effective windward area through the adjusting device 40, and pulls the cable 10 to complete the upward work; after rising to the upper working limit position, the third working parachute 330 reduces its effective windward area through the adjusting device 40, and completes the downward recovery under its own gravity and the pulling of the cable 10.

[0053] Furthermore, the working device 400 includes a winch device and a generator. The winch device is used to reel in the bottom end of the cable 10; the cable 10 pulls the winch device to rotate, thereby driving the generator to generate electricity.

[0054] In this embodiment, the hoist device and the generator are fixed on the ground. One end of the cable 10 is wound on the hoist device, and the other end of the cable 10 is tied to the lift guide body 200. The cable 10 is connected to the first working parachute 310, the second working parachute 320 and the third working parachute 330 in sequence from the ground to the air, as well as the umbrella-type wind power device 100 with a variable angle. The specific structure of the hoist device and the generator can refer to the Chinese patent with publication number CN102220938B - umbrella-type wind power device and wind power system. The lift guide body 200 can be a helium balloon, a kite, etc., and its function is to hoist the cable 10 in the initial stage of lift-off, guide the deployment of the working parachute ladder 300 and the umbrella-type wind power device 100. The specific structure and working principle of the first working parachute 310 and the second working parachute 320 can refer to the Chinese patent with publication number CN106762399A - an umbrella-type wind energy conversion system and its control system and control method.

[0055] The working process of this embodiment is as follows: the lift guide body 200 and the umbrella-type wind power device 100 rise under the action of wind. During the rise and in the working state thereafter, the lift guide body 200 and the umbrella-type wind power device 100 are always kept open to maintain the balance and stability of the aerial part, as well as the pitch angle of the cable 10 relative to the ground. The rise of the lift guide body 200 and the umbrella-type wind power device 100 drives the working parachute ladder 300 to start rising. The working parachute ladder 300 converts wind energy into the pulling of the cable 10 in various ways at high altitude. The pulling of the cable 10 is further converted into rotational power through the winch device, and finally drives the generator to generate electricity.

[0056] Obviously, the above embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An angle-variable umbrella-shaped wind power device, comprising a cable, an umbrella canopy and an umbrella rope, wherein the cable is suspended in the air and forms a pitch angle with the ground, and the edge of the umbrella canopy is connected to the cable through the umbrella rope; characterized in that: It also includes an adjustment device, which is used to change the deviation angle of the umbrella surface relative to the cable, so that the cable is subjected to a force deviating from its axis and adjusts the pitch angle of the cable relative to the ground; The adjustment device includes a first driver, an adjustment rope and a first hinge; The first driver is installed on the top of the umbrella, one end of the adjustment rope is rolled up in the first driver, and the other end of the adjustment rope is fixed on the cable; or the first driver is installed on the cable, one end of the adjustment rope is rolled up in the first driver, and the other end of the adjustment rope is fixed on the top of the umbrella; the first hinge is located below the umbrella, and the first hinge is used to connect the umbrella rope and the cable so that the two can rotate relative to each other; The first hinge includes a locker, which is used to fix the angle between the parachute rope and the cable; The adjustment device includes a second driver, a third driver, a second hinge and a third hinge; The second driver and the third driver are installed on the cable below the umbrella canopy; the second hinge and the third hinge are installed on the edge of the umbrella canopy; one end of a part of the umbrella rope is rolled up on the second driver, and the other end thereof is connected to the umbrella canopy through the second hinge; one end of a part of the umbrella rope is rolled up on the third driver, and the other end thereof is connected to the umbrella canopy through the third hinge.

2. The angle-variable umbrella-shaped wind power device according to claim 1, characterized in that: The adjusting device is a servo motor, which is installed on the cable below the umbrella surface, and the output shaft of the servo motor is fixedly connected to the umbrella rope.

3. The angle-variable umbrella-shaped wind power device according to claim 1, characterized in that: It also includes a solar film, which covers the upper surface of the umbrella surface and is used to collect solar energy to generate electricity and supply power to the regulating device.

4. The angle-variable umbrella-shaped wind power device according to claim 1, characterized in that: It also includes a wind power generation device, which is embedded and installed on the umbrella surface. The wind power generation device is used to collect wind energy to generate electricity and supply power to the regulating device.

5. An umbrella-type wind energy conversion system, comprising a lift guide, a work parachute ladder and a work device, wherein the lift guide is used to fix the top end of the connecting cable; the work parachute ladder is used to be connected to the cable to collect high-altitude wind energy and convert it into mechanical energy; the work device is used to be installed on the ground to collect the mechanical energy transmitted by the cable; characterized in that: It also includes an angle-variable umbrella-shaped wind power device as described in any one of claims 1 to 4.

6. The umbrella-type wind energy conversion system according to claim 5, characterized in that: The active parachute ladder includes at least one of a first active parachute, a second active parachute and a third active parachute; the first active parachute changes the windward area by opening and closing its own umbrella; the second active parachute changes the windward area by adjusting the opening size of its own umbrella; the third active parachute changes the windward area by adjusting the angle of its own umbrella.

7. The umbrella-type wind energy conversion system according to claim 5, characterized in that: The working device includes a winch device and a generator. The winch device is used to reel in the bottom end of the cable. The cable pulls the winch device to rotate, thereby driving the generator to generate electricity.

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