CN111075655A - Kite power generation method by using cables to transmit torque - Google Patents

The invention discloses a kite power generation method by using a cable to transmit torque; the invention has the advantages of simplicity, practicality, large wind sweeping area, uniform stress of the kite, simple control, difficult damage, convenient power adjustment and large single-machine power, and is an ideal new-generation wind power generation method.

Kite power generation method by using cables to transmit torque

Technical Field

The invention relates to a wind power generation method and a hydraulic power generation method, in particular to a kite power generation method for transmitting torque by a cable and a hydraulic power generation method for transmitting torque by the cable.

Background

In the prior art, the rotary kite power generation technology comprises the following examples, and CN201310618167 is a circular disc power generation system which is characterized in that a circular disc is pulled by adjusting the posture of a kite, and the adjustment of the posture of the kite is not given. CN200880017032 adopts a wind system which uses a kite dragging module to run on a track to convert energy and a method for generating electric energy by the system, which is characterized in that a hard wing kite is used to fly and drag a rotary trojan to rotate on the track, 2 guy cables of the kite are used as a power rope for the tension of the kite and a control rope for the attitude of the kite, and the difficulty is very high; the Italian Trojan of CN200780025199.1 and the last patent may be written by one person although the translated place name and the name of the person are different. The above patents have the defects that the flying attitude of the kite is difficult to control, the two kites wind each other, and the kite flies in disorder, if a wind farm is formed, the distance between the adjacent kite generators is very far, so that the kite is not developed to the high altitude, but the occupied area is increased, and the whole layout of the wind farm is not facilitated. The above patent can be ascribed to a horizontal axis wind power generation mode similar to that of a wind power generator on the ground, and at least can also be ascribed to a lift force type blade idea.

Patent CN201110343261 orbital wind power system and CN201110151529 rotary wind power device. The two patents are the jie work of Zhang Jianjun team of Guangdong high-altitude wind energy, the umbrellas do not move along with the rotating disc, the winch drives the rotating disc to move through the gear, the power can be made to be very high, the damage of a single umbrella does not stop the whole generator, the umbrellas are not interfered with each other, the defect that the umbrellas are opened and closed is still not overcome, and the air sweeping area of the umbrellas in unit area is limited. We believe that this concept has been very nearly successful, the main disadvantage being that the opening and closing of the umbrella is achieved by means of actuators in the air. The two patents can be summarized into a vertical axis wind power generation mode similar to that of a wind power generator on the ground, and at least can be summarized into a drag type blade thought, but the blade is still deformed and the opening and closing of the umbrella are a big defect different from the vertical axis power generation blade on the ground. The above ground vertical axis power generation blades are also deformed in a large pile, but the blades which are not deformed are practical or widely applied by people.

Patent AU2010245162A1 is similar to the thought of high-altitude wind energy in Guangdong, and the ideas are respectively long and long, and the opening and closing of the umbrella drives the rotating disc to move. Patent EP2748064a1 realizes that a single umbrella rotates in the air. Patent US7847426 realizes rotation, but the central shaft is towering in clouds, and cannot be counted as a kite. The rotation motion of the kite is realized by US20070120004A1, but the control of the kite is extremely complex, so that the realization of industrialization is prevented, and the kite is still in an experimental stage. Patent US20160281677a1 appears after the penholder patent CN201410089557, also on the way the cable and the lever transmit the torque. US20180065722a1 has not found an effective way to control the attitude of a kite.

The patent CN201410089557 of penmen-flexible coupling for torque transmission by cable and engine using the same have very good practical use effect, but it still needs the pulling rope between two rods to transmit torque, for the generation of power by kite, the weight of the rods is large, although the rods can be the skeleton of a hard wing kite, the skeleton of a large kite is also heavier, and the invention will provide an improved version.

Disclosure of Invention

In order to solve the problem of difficult attitude control of the kite in the background art, the torque generated by the kite is difficult to transmit from high altitude to the ground simply and effectively. The invention aims to provide a kite power generation method for transmitting torque by a cable, which is simple and reliable.

The invention provides a kite power generation method by using cables in a windmill form to transmit torque, which is in a top-bottom relationship with a flexible coupling for transmitting torque by using cables in a patent CN201410089557 and a windmill form in an engine applying the coupling, and a wing umbrella with flexible wind blades made of cloth is provided. In the case of birds and airplanes, the wings are symmetrical on both sides of the body, they also generate torque to the body (axis), but the torque generated by the two wings is opposite in direction, so the balance of the body is maintained, and in the case of propellers, the torque generated by the blades of the propeller rotates in the same direction, so the propeller rotates. The blades of the wind blade are the parafoil made of flexible cloth, the two blades are similar to the blades of the propeller, the torque rotating directions generated by the two blades are the same, so the parafoil rotates, the left parafoil and the right parafoil are connected together, the two parafoil are blown open like a parachute by fluid, the parafoil is completely unfolded by left and right radial component forces, and the two parafoil rotate like the propeller; the radial component of wind makes the parafoil bear pressure like the rod in the upper patent, so that the flexible parafoil and the cable can transmit torque, the parafoil can rotate well, and the posture of the parafoil is well controlled. In the case of two parafoils or kites, similar to the blades of a propeller, which are circumferentially equispaced about an axis, if they are tethered by a string only, the string between the two parafoils or kites is tensioned due to the radial stress of the parafoil with respect to its centre of rotation, the tensioned string providing good control over the attitude and position of the parafoil or kite. For simplicity, the above description has been given of two paravanes or kites in symmetry, as with the horizontal axis wind turbine on the ground, the number of blades or paravanes or kites of the invention can be 2 or more. The invention controls the attitude of the kite through the ropes and the rods, and the invention cannot enumerate one by one due to the very many combinations of the ropes and the rods, so other forms of controlling the attitude of the kite through the combination of the ropes and the rods for transmitting torque are considered as one form of the invention. The invention can be used as a water flow generator even if the invention is in a windmill form and is placed in water flow.

Taking a rotating parafoil with the diameter of 100 meters as an example, the wind sweeping area of a single parafoil is 2500 pi, a wind meter with the length of 10 meters per second is used, the power of a single impeller is 1MW, the power of 5 parafoils can reach 5MW after being connected in series, the highest point is about 800 meters away from the ground, and a blade with the length of 50 meters can be difficult to manufacture, but the flexible cloth is very easy, the manufacturing cost of the parafoil is about 5000 yuan, and the cost of a conventional wind driven generator with 1 blade with the length of 50 meters is 50 ten thousand, the price difference is 100 times, and the weight difference is ten thousand times. The high-altitude wind power generation can ensure that the generator stably works at a rated installed capacity accessory by adjusting the attack angle of the parafoil and the number of the parafoil.

The invention provides a kite power generation method for transmitting torque by using a cable in a waterwheel form, which is in a top-bottom relationship with a flexible coupling for transmitting torque by using the cable in the patent CN201410089557 and a waterwheel form in an engine applying the coupling, wherein a driven shaft and a driving shaft are connected with a driving rod and a driven rod through at least two ropes, and the torque is transmitted by using the tensile force of the ropes on the rods; the cloth sail is parallel to water flow or wind at the side without work, the cloth sail is unfolded at the side with work to be pushed by the water flow or the wind to generate torque to the shaft in a large area, and the resistance of the cloth sail to the water is controlled by the blocking effect of the limiting rope on the cloth sail.

The kite power generation method for transmitting torque by the aid of the waterwheel-type cables can be realized by slightly improving the waterwheel-type cables, a kite or umbrella-shaped kite or light balloon or airship is pulled on the driving rod, and two ropes are replaced by one piece of rectangular cloth on the driving rod, so that an improved kite power generation method for transmitting torque by the aid of the waterwheel-type cables is obtained.

The invention provides a kite string type kite power generation method by transmitting torque through a rotating trojan type cable, wherein at least 2 big arms are connected to a main shaft of a rotating trojan, the big arms are connected with small arms through hinges, at least two strings of kites are connected to two ends of each small arm, a stop block for limiting the positions of the small arms is arranged at the tail ends of the big arms, the two strings of kites are in a string at the leeward position of the other string at the non-working side in relation to airflow, the two strings of kites (umbrella-shaped kites or light balloons or airships) are in a relation with the airflow at the working side in such a way that the two strings of kites face the wind, the windward area of the two strings at the working side is larger than that of the non-working side, and therefore the main shaft is pushed to. In the invention, the simplest two strings of kites are drawn on the small arm only in fig. 2, and the kites on the small arm can be a plurality of strings. The limit of the method is that the kite becomes the cloth sail, when the cloth sail is on the non-acting side, the windward area of the cloth sail in the airflow is only the thickness of the cloth, and when the cloth sail is opened on the acting side, the windward area of the cloth sail is the area of the cloth.

The invention provides a kite power generation method of a rotary wooden horse type cable for transmitting torque in a cloth sail form, wherein at least 2 large arms are connected to a main shaft of the rotary wooden horse, the large arms are connected with small arms through hinges, two ends of each small arm are connected with sail rods through two ropes, the sail rods are connected with a cloth sail, the other end of the cloth sail is connected with another sail rod, two ends of the other sail rod are connected with a kite string through another two ropes, a stop block for limiting the positions of the small arms is arranged at the tail ends of the large arms, when the cloth sail is on the side without acting power, the windward area of the cloth sail in airflow is only the thickness of the cloth, and when the cloth sail is opened on the side without acting power, the windward area of the cloth sail is the area of the cloth, so that the net torque output generated on the main shaft is pushed.

Compared with the prior art, the invention has the technical effects that.

1. The shape or posture of the kite is controlled by the torque transmitted by the cable, the kite basically does not participate in deformation, and difficulty and vulnerability in control of the kite caused by deformation are avoided.

2. The wind power generation device has the advantages that the wind power generation device develops to high altitude by using the advantages of ground horizontal axis wind power generation, the single machine power is high, the cost is low, the power is adjusted by adjusting the serial number and the posture of kites, and the full-power generation operation can be basically maintained.

3. With the cooperation of two or more kites (the cloth sail is 1 kite and 1 piece of cloth), the result of the cooperation is similar to the change of the windward area or the resistance caused by the deformation of a single kite.

Description of the drawings.

Fig. 1 shows a kite generator with windmilling cable to transmit torque.

Fig. 2 illustrates a kite generator with windmilling cables to transmit torque.

Fig. 3 is a kite power generation method with a waterwheel type cable transmitting torque.

FIG. 4 is a kite power generation method with torque transmitted by kite string cables.

Fig. 5 is a partially enlarged view of a portion a of fig. 4.

Fig. 6 is a kite power generation method with torque transmission by cables in the form of cloth sails.

Detailed description of the preferred embodiments.

Example 1: as shown in fig. 1, a kite generator with windmilling cable to transmit torque comprises a main shaft (601), a rotating arm (602), a small arm (603), a cable (604) and a parafoil (605). The radial of main shaft (601) is connected with 2 rotating arms (602) which are uniformly distributed along the shaft, the rotating arms (602) are vertically connected with small arms (603), the small arms (603) are connected with a parafoil (605) through 2 cables (604), and two ends of the parafoil (605) are respectively connected with two ends of the 2 small arms (603) through the 2 cables (604). The relative length of the 4 cables (604) is adjusted to enable the parafoil (605) to form a flexible propeller, the parafoil rotates in the wind, the main shaft (601) is driven to rotate through the cables (604), and the main shaft (601) is connected with a generator or other work-doing machines.

When the main shaft is started, the parafoils on the two sides of the main shaft are bilaterally symmetrical like the wings on the two sides of a bird or an airplane, when the main shaft flies like a bird to stably fly in the air, the relative lengths of the 4 mooring ropes are adjusted, the attack angle of the parafoil is changed correspondingly, the parafoil on the two sides of the main shaft is adjusted into a propeller form, and the parafoil drives the main shaft to rotate; the change of the attack angle of the parafoil can also be adjusted, and the output power of the generator can also be adjusted; of course, adjusting the length of the cable also adjusts the amount of power output. The number of the parafoil of the invention can be 1, and when the number of the parafoil is multiple, the parafoil is connected in series through a cable.

Fig. 2 is a supplement to fig. 1, and as shown in fig. 2, the parafoil of the invention can be replaced by a kite, two kites which are uniformly distributed in the axial direction can be connected together through a cable (606) to form a parafoil similar to the parafoil in fig. 1, the cable between the two kites which are uniformly distributed in the axial direction controls the postures of the two kites, and the invention skillfully interconnects the two kites through the cable (606) so as to simply solve the difficult problem of controlling the postures of the kites in the power generation of the kites. The invention solves the difficulty of controlling the attitude of the rotary trojan type wind power generation kite, the main shaft (601) in figure 2 of the invention is inclined, and the main shaft (601) can work when being vertical to the ground, but the root of the rope has alternating stress once per circle of rotation of the cable, and the root of the rope can be prevented from the alternating stress if the main shaft is changed into a rotating ring or a spherical bearing.

Example 2: as shown in fig. 3, the kite generator with a waterwheel-shaped rope for transmitting torque comprises a driving shaft (31), a driving rod (32), a transmission rope (33), a cloth sail (34), a cloth sail mast (35), a limiting rope (36), a driven rod (37) and a driven shaft (38). One end of a driving shaft (31) is connected to the middle of a driving rod (32), two ends of the driving rod (32) are connected with two transmission ropes (33), a cloth sail (34) is connected to the transmission ropes (33), a reinforcing rib cloth sail mast (35) penetrates through the cloth sail (34), the other end of each transmission rope (33) is connected to one end of a driven rod (37), the middle of the driven rod (37) is connected with a driven shaft (38), the general driven shaft (38) is a generator shaft, one end of a limiting rope (36) is connected to the driving rod (32), and the other end of the limiting rope is connected to the driven rod (37).

The position shown in figure 3 is that the generator is placed in water flow or wind from the paper surface, the lower cloth sail (34) is blocked by the limiting rope (36) to be opened and is greatly resisted, the upper cloth sail (34) is almost parallel to the water flow or wind under the impact of the water flow or the wind, the resistance is small, the engine with the sail-shaped vertical shaft cable for transmitting torque rotates, and the rotating direction is clockwise when viewed from the shaft end of the driving shaft (31).

The generator for transmitting torque by the waterwheel-shaped cable is simplified for explaining the working principle, the transmission rope (33), the sail cloth (34), the sail cloth mast (35) and the limiting rope (36) are all connected in parallel by 1 or more, and the generator sail cloth is connected in series by a plurality of ropes; the generator can be placed in water flow or in wind, such as a driving shaft (31) and a driven shaft (38) are respectively pulled on 2 similar telegraph poles, and the driven shaft (38) is connected with a generator shaft; when the driving shaft (31) is connected to the balloon or kite through the rotating ring and the driven shaft (38) is connected to the ground generator, the wind driven generator is also a high-altitude wind driven generator; the other drive shaft (31) is anchored at one end to the sea floor and the other driven shaft (38) is pulled to shore or to a ship and connected to a generator shaft.

Example 3: fig. 4 is a view of a kite power generation method by transmitting torque through cables in the form of a kite string, fig. 5 is a partial enlarged view of a point a in fig. 4, and fig. 4 shows a kite power generation method by transmitting torque through cables in the form of a kite string, which comprises a main shaft (101), a large arm (102), a small arm (103) and a kite string (104), wherein a power generator or a prime mover is connected to the main shaft (101). The main shaft is connected with at least 2 large arms (102), the tail ends of the large arms (102) are provided with a stop block (105), the large arms (102) are connected with the small arms (103) through hinges, two ends of each small arm (103) are respectively connected with 1 kite string (104), the position of each hinge on each small arm (103) is not at the midpoint of each small arm (if the position of each hinge on each small arm (103) is the midpoint, the length or the size of each kite string on the same small arm is different), levers are formed at two ends of each hinge and each small arm (103), as shown in the figure, the direction of a straight arrow is the wind direction, the direction of a rotating arrow is the rotating direction of the main shaft (101), in the 1 o 'clock direction, 2 identical kite strings (104) are arranged on the lever formed by the hinges and the small arms (103), the stress balance result of the levers is that the 2 kite strings (104) and the wind direction are arranged on the same straight line, and the large arms (102) rotate from the 1 o' clock direction to the 3 o, the small arm (103) is blocked by the block (105) on the large arm (102), when the large arm (102) rotates from 3 o 'clock to 5 o' clock, 2 kite strings (104) are staggered in wind direction, the windward area is increased, when the large arm (102) rotates from 7 o 'clock to 9 o' clock, as the force acted on the block (105) by the small arm (103) is smaller and smaller, and finally the lever rotates about 180 degrees when approaching 9 o 'clock, the result of the balance of the lever stress after 9 o' clock is that the 2 kite strings (104) and the wind direction are on the same straight line, namely the windward area during the rotation of the large arm (102) by 3-4-5-6-7-8-9 o 'clock is 2 times of the windward area during 9-10-11-12-1-2-3 o' clock, so that the kite strings (104) generate torque to the main shaft (101), the main shaft drags the generator to generate electricity. Although the small arm in this embodiment does not transmit the complete torque output completely through the rope and the rod like the flexible coupling for transmitting torque by cable and the application of this coupling in the aforementioned "patent CN 201410089557", the torque transmitted through the rope and the rod controls the position or the shape of the kite string to change the windward area, and the phase change completes the torque transmission function of the cable. The invention controls the position or shape of two strings of kites through the small arm with the shape of the rod, the rod can be deformed into a curved shape due to the combination of the ropes and the rod, and other forms of ropes and rod combination methods for controlling the position and shape of the kites are considered to be one of the invention.