CN110917636A - Kite engine and kite power generation method - Google Patents

Abstract

The invention provides a kite engine and a kite power generation method, and the structure of the kite engine comprises the following steps: the device comprises a rotating wheel, a primary transmission shaft, a speed increaser, a secondary transmission shaft, a power output end, a kite pull rope, a main power kite and a balance kite; from the ground rotating wheel to the high altitude, the kite pulling rope forms a large-circulation closed curve consisting of an ascending section and a descending section, from the ascending section starting from the rotating wheel, two wings of all main force kites are unfolded against the wind, when the descending section passes through the highest point of the large circulation in the air of the kite pulling rope, the left and right wings of all main force kites are folded, the difference value of the tension of the main force kites in the ascending section and the descending section generates torque to the ground rotating wheel to drive the rotating wheel to rotate, the rotating wheel drives the speed increaser through a primary transmission shaft, the speed increaser drives a power output end to output power outwards through a secondary transmission shaft, and the tension of the balancing kite: the main force kite structure further comprises a spring mechanism. The spring mechanism consists of a left half beam, a right half beam, a spring and a left pull wire and a right pull wire.

Description

Kite engine and kite power generation method

Technical Field

The invention relates to the technical field of new energy power, in particular to a kite engine and a kite power generation method.

Background

The simplest kite is a flower-green children toy bundled by a small stick, a thin rope and color paper.

About 20 years ago, more and more surfing fans began to use large kite power to replace motorboats to pull a skateboard for surfing, and a kite with the size of 20 square meters and a high-tech rope with the strength 15 times that of a steel rope can cause the surfing fans to hurdle at the speed of 100 kilometers away or fly to the air with the length of more than 15 meters and then lightly slide back to the water surface.

Under the eye, researchers in various countries are striving to endow a kite with a new function, namely, the kite becomes an overhead wind power generation platform. In the foreseeable future, the wind power kite can fly into the high altitude, and the stronger and more stable wind energy can be captured back.

According to the description, although people pull small trains by the power of large kites as early as the beginning of the nineteenth century, the possibility of kite power generation is not studied until about 1980.

A researcher who initiated theoretical research in this field is Wanli-Laoerd, Lorens, Calif It is calculated in the Rivermo national laboratory that if the wing span of the kite can reach the size of a Rockschind C-5 transporter wing (68 meters long), theoretically, in the wind power of 10 meters per second, the kite can obtain megawatt-level energy when flying back and forth in the wind, which can be compared with the current large-scale ground wind power output end.

Laegend proposes two ways of kite power generation: firstly, turbine blades similar to propellers are installed on the wings of a kite, the air drives the blades to rotate to generate electric energy, and then the electric energy is transmitted to the ground through a conductive rope, and the technology is called as a flying power output end by nicknames nowadays; the other scheme is that the force applied to the control rope by the kite in the air drives the ground equipment to generate power.

Compared with the traditional wind power output end in the style of a high tower and a windmill, the kite-mounted high-altitude wind power generation system has the advantages that: such a roped aircraft can reach higher altitudes where the wind energy is more robust and stable. In addition, because no tall tower is built to support the large rotating blades, this significantly reduces construction costs and installation time.

Compared with the traditional wind power equipment, the kite power generation system in the laboratory stage has a plurality of problems to be overcome.

For example, in the system, the kite is used as a wind energy collector to convert high-altitude wind energy into mechanical energy, and is also a balancer for keeping the system stable, but the balance motion and the work-doing motion are mutually coupled and influenced, so that an optimal control mode for balance and work-doing is difficult to design, the system is complex, and the continuity and the stability are difficult to guarantee.

Safety concerns are also taken into account, and power stations are easily destroyed by "down-the-line" lightning in a thunderstorm weather.

As one of the "pioneers" of the world development of precision kite power generation prototypes, WindLift corporation, robert-klepton, developed kite power generation systems since 2005, and they are currently performing power generation tests using surf kites on land.

The experimental power generation system comprises a roller with the diameter of 90 cm and a power output end with the power of 60 kilowatts, the kite pulls the roller through a rope to drive the power output end to generate power, then the kite releases tension through a control line, and in the process, the roller is reversely rotated by a motor and the kite is tensioned again.

The problem faced in the present experiments is that during the re-tensioning process the kite must release all or preferably negative tension, i.e. air pushes the kite down, but the kite can only release most of the tension of the ropes by fully retracting the wing span, and researchers have therefore used an inflatable kite with a long and thin air bubble in front of the wing to maintain the wing shape.

Even so, the wings are too flexible and difficult to control when tightened again.

The WindLift kite uses fibre wings that are closer to the traditional kite, while its part of the competitors are studying the use of rigid wings, which are more expensive and more fragile when landing, but are more aerodynamic than fibre wings and can extract more energy from the wind.

Makani Power, Inc. located in California is one of the "faucet businesses" for this concept. The large-scale carbon composite material kites manufactured by the kites are provided with 4 power output ends with propellers. During takeoff, the power output end is used as a motor to drive the propeller to rotate and is used as the power of the kite on the sky; after taking off, the kite can fly without other assistance by the generated lift force, and once the thrust brought by wind and the tension of the propeller are balanced, the power output end starts to generate power.

In the last year, Makani introduced a prototype kite power generation system rated at 30 kw. It is known that its final aim is to deploy a shaped kite power generation system offshore and to access the produced electrical energy to the grid.

In the field of high-altitude wind power, foreign scientific research institutions have the advantages of 'first generation', occupy China with the advantages of 'heaven and earth utilization', and have good prospects.

According to statistics, the wind power density of wind power stations on all the large ground in the world is lower than 1 kilowatt per square meter on average, the wind power density near the torrent in the air in New York can reach 16 kilowatts per square meter, the wind power density in most areas of ten thousand meters high altitude in China exceeds 5 kilowatts per square meter, and the wind power density near the torrent in the air in Thursu areas even reaches 30 kilowatts per square meter, which is the most important point in the world.

By virtue of the 'land of China', in recent years, some enterprises in China begin to participate in high-altitude wind power projects.

In 11 th 2009, the "Guangdong high altitude wind energy technology Limited company" in Guangzhou, the company plans to use a specially-made kite, and at the high altitude of thousands of meters to ten thousand meters, the wind energy and the self gravity are used for ascending and descending, the generated pulling force is used for driving a ground power output end to generate power, and the recent target formulated by the company is as follows: and 2 megawatt industrialized prototypes are built, and 10 megawatt medium-high wind power generation demonstration power stations are built.

The technology used by the company is called umbrella ladder combined wind energy collection technology, and the high-altitude wind energy power generation system adopts a module combined structure to separate and respectively control a lift force balance system and an acting system.

At present, the company develops a model machine of the high-altitude wind power generation principle, namely a Tianfeng I model, and the whole system is installed on a modified truck and is subjected to a flying and power generation test.

Generally speaking, many research and development units at home and abroad research, design and experiment kite power generation devices, and at present, the kite power generation devices do not enter into commercial operation, and the reason is that the core technology is not concerned, namely, many problems of the kite engine are not solved.

Disclosure of Invention

Kite engine, its structure includes: the main power kite comprises a rotating wheel, a primary transmission shaft, a speed increaser, a secondary transmission shaft, a power output end, a kite pull rope and a main power kite.

From the ground rotating wheel to the high altitude, the kite pulling rope forms a large-circulation closed curve consisting of an ascending section and a descending section, and a plurality of main kites are arranged on the closed curve at equal intervals.

The main force kite is a triangular kite, and the structure of the main force kite comprises: the vertical central column and the windcoats on the two sides of the central column form two symmetrical wings, the outer edges of the two wings are provided with left and right side columns, and the central column is provided with triangular traction cloth; the kite pulling rope is connected with the traction cloth of the main kite and penetrates through the center of the kite to be connected with the next main kite; from an ascending section starting from the rotating wheel, two wings of all main kites are unfolded against the wind, when a descending section passes through the highest point of the air macrocycle of the kite guy rope, the left and right wings of all main kites are folded, and the folded main kites do not generate upward pulling force; the difference of the main force kite pulling force of the ascending section and the descending section generates torque to a ground rotating wheel to drive the rotating wheel to rotate, the rotating wheel drives a speed increaser through a first-stage transmission shaft, and the speed increaser drives a power output end to output power outwards through a second-stage transmission shaft.

The structure of the kite engine also comprises a balancing kite;

the main force kite structure further comprises a spring mechanism.

The balance kite is a common triangular kite, is smaller than a main kite, has the windcheating area about half that of the main kite, and structurally comprises: the wind coat, the left side column, the cross beam, the central column, the traction cloth, the right side column and the short stay wire;

the profile of the balancing kite is in an obtuse-angle equilateral triangle, if the obtuse-angle vertex angle of the kite is upward, the central column of the kite is in a vertical state, the central column is used as the center, the left wind jacket and the right wind jacket of the kite are in two symmetrical wings, the outer edge of the left wing is a left side column, the outer edge of the right wing is a right side column, triangular traction cloth is arranged above the central column, the central column is vertically intersected with a horizontal cross beam, one end of a short pull line of the balancing kite is connected with the vertex angle of the traction cloth, and the other end of the short pull line is fixed with one point on the pull.

The spring mechanism comprises the following structures: a left half beam, a right half beam, a spring, a left pull wire, a right pull wire and the like 5.

The left end of the left half cross beam is connected with the left column, the right end of the left half cross beam is connected with the left end of the spring, the right end of the spring is connected with the right half cross beam, and the right end of the right half cross beam is connected with the right column.

The center of the horizontal spring is fixed with the vertical central column; one end of a left stay wire is connected with the left end of the left half cross beam, one end of a right stay wire is connected with the right end of the right half cross beam, the other end of the left stay wire and the other end of the right stay wire are connected with the kite stay rope, the left stay wire and the right stay wire are equal in length, the left stay wire, the right stay wire, the left half cross beam, the right half cross beam and the spring form a horizontal obtuse angle equilateral triangle, the left stay wire and the right stay wire are two obtuse angle.

The kite power generation method comprises the following steps:

(1) from the ground to several kilometers of high altitude, the kite rope is driven by the kites to form a large-circulation closed curve which winds around the ground rotating wheel and extends upwards to the high altitude;

(2) a plurality of main kites are sequentially arranged on the kite pulling rope of the closed large circulation, and the distances among all the kites are equal; in the ascending section of the outward stroke and the descending section of the return stroke of the major cycle, the postures of the main kite relative to the wind direction are different, and the wind acting force is different;

(3) in the ascending section of the big circulation of the kite pulling rope, each main force kite opens a wind coat to generate a lifting force, the lifting force is transmitted to the kite pulling rope through a traction cloth at the center of the kite, and the total pulling force of all the main force kites in the ascending section is transmitted to a rotating wheel through the kite pulling rope;

(4) in the descending section of the big cycle of the kite pulling rope, the main force kite wind jacket is folded, and the main force kite which is positioned in the descending section and is already folded with the wind jacket does not have upward pulling force on the kite pulling rope any more;

(5) the kite stay cord drives the rotating wheel at the bottommost end of the major cycle to rotate through the kite stay cord according to the difference value of the main force kite pulling forces of the ascending section and the descending section of the major cycle, the rotating wheel drives the speed increaser through the transmission shaft, and the speed increaser drives the power output end to output power outwards through the transmission shaft;

the method is characterized in that:

(1) the main kite is provided with a left half beam, a right half beam and a spring mechanism, when the main kite reaches the maximum point of a macrocycle along an ascending section, the back of the main kite is pulled to start the return stroke of a descending section, the springs of the spring mechanism are pulled down and bent by the kite pulling rope of the descending return stroke, under the combined action of wind power, the left half beam and the right half beam of the kite are folded immediately, the wind jacket is folded, and the main kite does not have a lifting force any more;

(2) the kite stay cord is in a large circulation, a main force kite and a balance kite are further arranged on the kite stay cord, the two kites are arranged at equal intervals, and the two kites are equal in number; in the ascending section and the descending section, each balancing kite opens the windcoat to generate the lifting force, so that the pulling forces of the balancing kites in the ascending section and the descending section are equal, only the positive pressure is generated on the rotating wheel, and no torque is generated.

Drawings

FIG. 1 is a general view of a kite engine embodiment of the present invention;

FIG. 2 is a block diagram of a master kite with an embodiment of a kite engine of the present invention;

FIG. 3 is a state diagram of a master kite return trip of a kite engine embodiment of the present invention;

FIG. 4 is a diagram of a master kite over-wheel state of a kite engine embodiment of the present invention;

FIG. 5 is a block diagram of a balanced kite with an embodiment of the kite engine of the present invention;

FIG. 6 is a diagram of a balanced kite over-wheel state of an embodiment of a kite engine of the present invention;

FIG. 7 is a schematic diagram of the steps of the method for generating kite power according to the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

FIG. 1 shows an overview of an embodiment of a kite engine of the present invention.

The general structure of the embodiment of the kite engine comprises: the kite comprises a rotating wheel 1, a primary transmission shaft 2, a speed increaser 3, a secondary transmission shaft 4, a power output end 5, a kite stay rope 6, a main kite 7 and a balance kite 8.

The kite stay ropes 6 are arranged in the air from high altitude to low altitude to form a large-circulation closed curve consisting of an ascending section and a descending section, and the closed curve is provided with the same number of main kites 7 and balancing kites 8 which are arranged alternately.

The connection modes of the kite of the main kite 7 and the kite of the balance kite 8 are different from those of the kite pulling rope 6, the kite pulling rope 6 is connected with the main kite 7 and penetrates through the center of the kite, and the other end of the balance kite 8, which leads out a short pulling rope, is connected to the kite pulling rope 6.

At the ascending section of the kite pulling rope 6 from the rotating wheel 1, all the main force kites 7 at the ascending section are fully unfolded against the wind, and under the action of wind power, the main force kites 7 drive the ascending section of the kite pulling rope 6 to ascend to the high altitude; when the main force kite 7 reaches the highest point of the air large circulation closed curve formed by the kite pulling ropes 6, as the kite pulling ropes 6 start to descend, the downward kite pulling ropes 6 touch the spring mechanism of the main force kite 7 at the highest point, the windy coat unfolded by the main force kite 7 at the highest point faces the wind is folded immediately, the folded kite with the windy coat is hung on the kite pulling ropes 6 just like a piece of wet clothes, the windward area of the folded kite is small, the folded kite does not have a reasonable aerodynamic shape, and the folded kite does not have upward pulling force on the kite pulling ropes 6 any more.

The number of the balancing kites 8 is the same as that of the main force kites 7, and the balancing kites and the main force kites are arranged alternately. Unlike the master kite 7: all line segments of the air large-circulation closed curve formed by the kite pulling ropes 6 comprise an ascending segment and a descending segment, the balancing kite 8 is fully unfolded against the wind, in addition, the balancing kite 8 is smaller than the main force kite 7, and the windward area of the balancing kite 8 is about half of the windward area of the main force kite 7.

The balancing kite 8 has two functions:

1, in the descending section of the closed curve of the big circulation in the air formed by the kite guy ropes 6, the main force kite 7 is changed into a folding kite, no upward pulling force exists, due to the combined action of the gravity of the folding kite and the resistance of the wind, a descending force is formed, the balancing kite 8 is used for offsetting the descending force, otherwise, the folding kite in the descending section can pull down the kite in the ascending section.

2, if only the main kite exists, the main kite in the ascending section pulls the kite pulling rope 6 to move upwards, the main kite in the descending section is changed into a folding state, the kite pulling rope 6 is pulled to move downwards, the kite pulling rope 6 hardly has positive pressure on the rotating wheel 1, and almost no friction force exists, and the kite pulling rope 6 slips on the rotating wheel, so that the rotating wheel cannot be driven to rotate.

In the ascending section and the descending section of the air large-circulation closed curve formed by the kite pulling ropes 6, the balance kite 8 is completely unfolded against the wind, and meanwhile, the pulling ropes 6 are pulled upwards, so that the pulling ropes 6 generate positive pressure on the rotating wheels.

In the ascending section and the descending section of the air large-circulation closed curve formed by the kite pulling ropes 6, the tension of the main force kite 7 is different, and the tension difference generates torque to the rotating wheel 1 to drive the rotating wheel 1 to rotate. When the rotating wheel 1 rotates, the speed increaser 3 is driven to rotate at a low speed through the primary transmission shaft 2, the speed increaser 3 drives the power output end 5 to rotate at a high speed through the secondary transmission shaft 4, and the power output end outputs power outwards.

FIG. 2 is a schematic representation of a master kite of an embodiment of the kite engine of the present invention.

The main kite of the kite engine embodiment of the invention is a triangular kite which is an equilateral obtuse triangle, the obtuse vertex angle of the main kite is upward, and the main kite is integrally two wings which are symmetrical left and right.

The commercial triangular kite sold in the market is composed of a triangular wind coat, a central column, a left side column, a right side column, a cross beam, triangular traction cloth and a kite pull rope.

The invention discloses a principal kite of a kite engine embodiment, which is modified on the basis of a commodity triangular kite. The structure of the main kite of the kite engine embodiment of the invention is as follows: wind coat 24, central column 30, left side column 23, right side column 29, traction cloth 28, left half beam 22, right half beam 26, spring 27, left pull line 21, right pull line 25 and kite pull line 6.

The parts 6 of the wind coat 24, the central column 30, the left side column 23, the right side column 29, the traction cloth 28, the kite pulling rope 6 and the like are the same as those of a commodity triangular kite without modification. The traction cloth 28 is an obtuse triangle, the obtuse vertex angle of the traction cloth is fixed with the kite pulling rope 6, and the bottom edge opposite to the obtuse angle is fixed on the central column 30.

The main kite of the embodiment of the kite engine of the invention has two changes to the original commodity kite:

1, cutting off a cross beam of an original commodity kite from the middle to form a left half cross beam 22 and a right half cross beam 26, installing a spiral spring at the middle cut of the cross beam, connecting the left half cross beam 22 and the right half cross beam 26 by using the spiral spring, and fixing the central point of the spiral spring by using a cloth belt which is used for fixing the cross beam originally on a central column;

2, a left pull line 21 and a right pull line 25 are led out from the connection point of the left half beam 22 and the left column 23 and the connection point of the right half beam 26 and the right column 29 respectively, and one ends of the left pull line 21 and the right pull line 25 are fixed at one point with the kite pulling rope 6. The left and right stay wires 21, 25 form a horizontal obtuse-angle equilateral triangle with the left half beam 22, the right half beam 26 and the coil spring 27, and the left and right stay wires 21, 25 are two obtuse-angle edges. The horizontal obtuse equilateral triangle is called as a horizontal traction angle, and the obtuse vertex angle of the horizontal obtuse equilateral triangle is fixed with the kite pulling rope 6.

Compared with the original commodity kite, the main kite of the embodiment of the kite engine of the invention has the structural function changed into the main kite

1, because the cross beam of the original commodity kite is cut off from the middle to form a left half cross beam and a right half cross beam, and a spiral spring is arranged at the middle cut of the cross beam, the purpose of doing so is that the horizontal cross beam of the main kite is not rigid, but flexible and can be bent. The purpose is that during the descent segment of the kite, namely the return stroke, the left half beam and the right half beam are folded, the two wings of the kite are folded, the left half windcheater and the right half windcheater of the kite are folded, the two wings of the similar butterfly are folded, so that the windward side is reduced, the lift force of the kite is reduced, and the result is that: in the large space cycle, the tension of the ascending section is far greater than that of the descending section of the return stroke, and the rotating wheel is pushed by the tension difference to drive the power output end. In fact, the main force kite in the return descent segment has no lifting force, only resistance and gravity.

2, compared with the original commodity kite, the main kite of the kite engine embodiment of the invention is additionally provided with a horizontal traction angle part. The kite cross beam is changed from rigidity to flexibility, and when the kite is fully unfolded in the rising section of the kite, the left side column 23 and the right side column 29 are pulled by using the left pull line 21 and the right pull line 25 at the horizontal traction angle, so that the wind coat 24 of the kite keeps a plane opening shape.

The main force kite of the kite engine embodiment of the invention, its left half crossbeam 22, right half crossbeam 26, spring 27, left guy wire 21, right guy wire 25, etc. 5 parts form the spring organ, wherein: the left end of the left half beam 22 is connected with the left side column 23, the right end of the left half beam 22 is connected with the left end of the spring 27, the right end of the spring 27 is connected with the right half beam 26, and the right end of the right half beam 26 is connected with the right side column 29; the horizontal spring 27 is fixed with the vertical central column, one end of the left stay wire 21 is connected with the left end of the left half cross beam 22, one end of the right stay wire 25 is connected with the right end of the right half cross beam 26, and the other ends of the left stay wire and the right stay wire are connected with the kite stay rope 6. The left and right stay wires are equal in length, form a horizontal obtuse-angle equilateral triangle with the left and right half beams and the spring, and the left and right stay wires 21 and 25 are two obtuse-angle sides. The horizontal obtuse equilateral triangle is called as a horizontal traction angle, and the obtuse vertex angle of the horizontal obtuse equilateral triangle is fixed with the kite pulling rope 6.

The functional principle of the spring mechanism is as follows: in the ascending section of the air large-circulation closed curve formed by the kite pulling ropes 6, a main force kite spring mechanism ensures that the main force kite opens two wings to generate a lifting force; at the highest point of the large-circulation closed curve of the kite stay cord 6, when the kite stay cord 6 on the back of the kite starts to move backwards, a spring is pulled to bend, under the combined action of wind power, the main kite is broken down instantly, two wings of the main kite are folded immediately, and the lift force is lost; in the descending section of the big circulation closed curve of the kite stay cord 6, a spring mechanism always maintains the two wings of the main kite in a folded state; when the main kite enters the ascending section again through the rotating wheel on the ground, the front face of the kite faces the incoming wind, and under the combined action of the restoring force of the spring and the wind power, the main kite opens the double wings again to generate the lifting force.

FIG. 3 is a schematic view of the return stroke of a kite of the present invention.

This figure shows the return travel position of a Kite engine embodiment of the invention, with the Kite's front side down, along the central axis 30, prone on the Kite ropes 6. Because the spiral spring 27 at the center of the left and right half beams is bent under the action of wind force and gravity, the left and right windshields 24, the left and right half beams, the left and right side columns 23, 29 of the kite respectively droop on the left and right sides of the kite stay cord 6, wherein the right half beam 26 and the right side column 29 are on one side, and the left side column 23 and the left half beam are on the other side, so that the main force kite in a rolling and folding state is called as a folding kite. The action area of the folded kite and the space atmospheric flow is small, almost no lifting force exists due to the appearance, and only air resistance and gravity are available.

The kite stay cord 6 is driven by the ground rotating wheel to move downwards along an inclined angle, and the main kite lying on the stay cord 6 moves downwards along with the stay cord 6. The obtuse vertex angle of the main kite is upward, and the corresponding bottom edge of the obtuse angle is downward, so that the downward movement of the main kite in the return stroke is performed in a backward mode, and the bottom edge of the kite meets the rotating wheel on the ground firstly.

FIG. 4 is a diagram showing the main kite passing wheel state of the kite engine embodiment of the present invention.

In the final passing wheel state of the main kite in the embodiment of the kite engine, the front face of the main kite faces downwards, the central column 30 is overlapped with the kite pulling rope 6, and the left half wind coat, the right half wind coat, the left side column, the right side column and the left half cross beam respectively droop on two sides of the kite pulling rope 6.

The kite stay cord 6 winds the rotating wheel 1, when a main force kite descends to contact the rotating wheel 1, the kite stay cord 6 rolls the kite central column 30 and the wind coat central line along the outline of the outer circle of the kite rotating wheel, the kite stay cord 6, the kite central column 30 and the wind coat central line are bent as the same as the outline of the outer circle of the kite rotating wheel, the main force kite rotates together with the rotating wheel 1, the left half cross beam 22 and the left half post 23 of the kite droop on one side of the bent central column 30, the right half cross beam and the right half post 23 droop on the other side, and are driven by the kite stay cord 6 and the central post 30 to rotate together outside the outer circle of the rotating wheel 1 and.

When the main kite leaves the rotating wheel 1, under the action of wind blowing force and the spring, the main kite immediately opens the coat, and the coat is like a sailing boat with an opened sail, advances by riding the wind and rises to the high altitude.

FIG. 5 is a block diagram of a balanced kite with an embodiment of the kite engine of the present invention.

The balance kite of the embodiment of the kite engine is a common triangular kite without any modification, the appearance of the balance kite is in an obtuse-angle equilateral triangle shape, the balance kite is smaller than a main kite, and the wind coat area is about half of that of the main kite. The structure of it is: wind coat 31, left post 32, crossbeam 33, center post 34, pull cloth 35, right post 36, short stay 37.

One end of a short pull line 37 of the balancing kite is connected with the top angle of the traction cloth 35, and the other end of the short pull line 37 is fixed with one point on the kite pull rope 6.

In the large circulation from the high altitude to the ground formed by the kite pulling ropes 6, no matter in the ascending section or the descending section, the balancing kite is full of wind clothes, receives the pneumatic action of wind blowing and always generates upward pulling force action on the kite pulling ropes 6. Because the balance kites are uniformly distributed on the circulating pull line, the pull forces generated at the ascending section and the descending section are basically equal, the acting directions of the moments of the two pull forces are opposite for the rotating wheels, and the rotating moment for the rotating wheels can not be generated, so that the balance kites do not do work.

The effect of balanced kite is: 1, pulling a main kite in a return descent section to ensure that the main kite without lifting force in the return descent section cannot pull the main kite in an ascent section; although the two pulling forces generated by the balancing kite in the ascending section and the descending section are equal, the balancing kite cannot generate rotating torque to the rotating wheel and does not do work, the result of the combined action of the two pulling forces guarantees the positive pressure of the kite pulling rope 6 on the surface of the excircle of the rotating wheel, and further guarantees the friction force, so that the kite pulling rope 6 can utilize the main force kite to act on the torque to pull the rotating wheel and output power.

FIG. 6 is a diagram showing the states of the flying of a balanced kite according to an embodiment of the kite engine of the present invention.

In the balance kite engine embodiment of the invention, the balance kite 7 is fixed on the kite pulling rope 6 by virtue of the short pulling rope 37 in a wheel passing state. The return pull wire 6 is driven by the rotating wheel 1, and along the descending section of the big circulation of the kite, the pull wire 6 drives the balancing kite 7 to approach the rotating wheel 1 step by step through the short pull wire 37. The rotating shaft at the center of the rotating wheel 1 is a half shaft, the left side of the rotating wheel 1 outputs power through the half shaft, and the right side of the rotating wheel 1 is suspended without a shaft. When the balancing kite 7 is to be rolled into the cylindrical groove of the rotating wheel 1 by the pull wire 6, the balancing kite 7 contacts with a strip-shaped kite guide plate 9, and the balancing kite 7 is guided out of the plane of the rotating wheel 1 by the kite guide plate 9 from left to right along the vertical direction of the plane of the rotating wheel 1, so that the balancing kite 7 is rolled by avoiding the rotating wheel 1. The balancing kite 7 sweeps through the right space of the rotating wheel 1 without a rotating shaft, avoids an excircle channel of the rotating wheel 1, and then enters an ascending section of a kite stay wire large cycle from an outlet of the rotating wheel 1.

Fig. 7 shows a schematic diagram of the steps of the kite power generation method of the present invention.

The invention relates to a kite power generation method, which comprises the following specific steps:

(1) from the ground to the high altitude of thousands of meters, the kite pulling rope 6 is driven by the series of kites to form a large-circulation closed curve which winds around the ground rotating wheel 1 and extends to the high altitude;

(2) on this closed macrocycle kite string 6, there are a plurality of two kites: the main kite 7 and the balance kite 8 are arranged at intervals at equal intervals, and the two kites are equal in number;

(3) the lowest end of the large circulation of the kite pulling rope 6 rounds the excircle of the rotating wheel 1, the rotating wheel 1 drives the speed increaser 3 through the transmission shaft, and the speed increaser 3 drives the power output end 5 through the transmission shaft;

(4) the number of the balancing kites 8 at the ascending section and the descending section of the large circulation of the kite pulling ropes 6 is equal, each balancing kite 8 is provided with a wind coat to generate a lifting force, therefore, the pulling forces of the balancing kites at the ascending section and the descending section are equal, only the rotating wheel 1 generates positive pressure, and no torque is generated;

(5) in the ascending section of the great circulation of the kite pulling rope 6, each main force kite 7 opens a wind coat to generate a lifting force, the lifting force is transmitted to the kite pulling rope 6 through the traction cloth at the center of the kite, and the total pulling force of all main force kites in the ascending section is transmitted to the rotating wheel 1 through the kite pulling rope 6;

(6) when the main force kite 7 reaches the highest point of the air macrocycle of the kite pulling rope 6 along the ascending section, the back pulling line 6 of the main force kite starts the return stroke of the descending section, the spring of the spring mechanism is pulled down and bent by the kite pulling rope 6 in the downward return stroke, and under the combined action of wind power, the left and right half cross beams of the kite are folded immediately, and the wind coat is folded. After passing through the highest point, the main force kite which is positioned at the descending section and is folded does not have upward pulling force on the kite pulling rope 6 any more;

(7) the kite stay cord 6 generates torque to the rotating wheel 1 by the difference of the main force kite pulling forces of the major cycle ascending section and the descending section, the rotating wheel 1 drives the speed increasing machine 3, and the speed increasing machine 3 drives the power output end 5 to output power outwards.

Claims (4)

1. Kite engine, its structure includes: the main power kite comprises a rotating wheel, a primary transmission shaft, a speed increaser, a secondary transmission shaft, a power output end, a kite pull rope and a main power kite; from the ground rotating wheel to the high altitude, the kite rope forms a large-circulation closed curve consisting of an ascending section and a descending section, and a plurality of main kites are arranged on the closed curve at equal intervals; the main force kite is a triangular kite, and the structure of the main force kite comprises: the vertical central column and the windcoats on the two sides of the central column form two symmetrical wings, the outer edges of the two wings are provided with left and right side columns, and the central column is provided with triangular traction cloth; the kite pulling rope is connected with the traction cloth of the main kite and penetrates through the center of the kite to be connected with the next main kite; from an ascending section starting from the rotating wheel, two wings of all main kites are unfolded against the wind, when a descending section passes through the highest point of the air macrocycle of the kite guy rope, the left and right wings of all main kites are folded, and the folded main kites do not generate upward pulling force; the tensile difference of section main force kite that rises and descend produces the torque to the ground runner, drives the runner rotation, and the runner drives the speed increaser through the one-level transmission shaft, and the speed increaser drives power take off end through the secondary drive shaft and externally exports power, its characterized in that:

(1) the structure of the kite engine also comprises a balancing kite;

(2) the main force kite structure further comprises a spring mechanism.

2. A kite engine according to claim 1, wherein: the balance kite is a common triangular kite, is smaller than a main kite, has the windcheating area about half that of the main kite, and structurally comprises: the wind coat, the left side column, the cross beam, the central column, the traction cloth, the right side column and the short stay wire; the profile of the balancing kite is in an obtuse-angle equilateral triangle, if the obtuse-angle vertex angle of the kite is upward, the central column of the kite is in a vertical state, the central column is used as the center, the left wind jacket and the right wind jacket of the kite are in two symmetrical wings, the outer edge of the left wing is a left side column, the outer edge of the right wing is a right side column, triangular traction cloth is arranged above the central column, the central column is vertically intersected with a horizontal cross beam, one end of a short pull line of the balancing kite is connected with the vertex angle of the traction cloth, and the other end of the short pull line is fixed with one point on the pull.

3. A kite engine according to claim 1, wherein: the spring mechanism comprises the following structures: 5 parts of a left half beam, a right half beam, a spring, a left pull wire, a right pull wire and the like; the left end of the left half cross beam is connected with the left column, the right end of the left half cross beam is connected with the left end of the spring, the right end of the spring is connected with the right half cross beam, and the right end of the right half cross beam is connected with the right column; the center of the horizontal spring is fixed with the vertical central column; one end of a left stay wire is connected with the left end of the left half cross beam, one end of a right stay wire is connected with the right end of the right half cross beam, the other end of the left stay wire and the other end of the right stay wire are connected with the kite stay rope, the left stay wire and the right stay wire are equal in length, the left stay wire, the right stay wire, the left half cross beam, the right half cross beam and the spring form a horizontal obtuse angle equilateral triangle, the left stay wire and the right stay wire are two obtuse angle.

4. The kite power generation method comprises the following steps:

(1) from the ground to several kilometers of high altitude, the kite rope is driven by the kites to form a large-circulation closed curve which winds around the ground rotating wheel and extends upwards to the high altitude;

(2) a plurality of main kites are sequentially arranged on the kite pulling rope of the closed large circulation, and the distances among all the kites are equal; in the ascending section of the outward stroke and the descending section of the return stroke of the major cycle, the postures of the main kite relative to the wind direction are different, and the wind acting force is different;

(3) in the ascending section of the big circulation of the kite pulling rope, each main force kite opens a wind coat to generate a lifting force, the lifting force is transmitted to the kite pulling rope through a traction cloth at the center of the kite, and the total pulling force of all the main force kites in the ascending section is transmitted to a rotating wheel through the kite pulling rope;

(4) in the descending section of the big cycle of the kite pulling rope, the main force kite wind jacket is folded, and the main force kite which is positioned in the descending section and is already folded with the wind jacket does not have upward pulling force on the kite pulling rope any more;

(5) the kite stay cord drives the rotating wheel at the bottommost end of the major cycle to rotate through the kite stay cord according to the difference value of the main force kite pulling forces of the ascending section and the descending section of the major cycle, the rotating wheel drives the speed increaser through the transmission shaft, and the speed increaser drives the power output end to output power outwards through the transmission shaft;

the method is characterized in that:

(1) the main kite is provided with a left half beam, a right half beam and a spring mechanism, when the main kite reaches the maximum point of a macrocycle along an ascending section, the back of the main kite is pulled to start the return stroke of a descending section, the springs of the spring mechanism are pulled down and bent by the kite pulling rope of the descending return stroke, under the combined action of wind power, the left half beam and the right half beam of the kite are folded immediately, the wind jacket is folded, and the main kite does not have a lifting force any more;

(2) the kite stay cord is in a large circulation, a main force kite and a balance kite are further arranged on the kite stay cord, the two kites are arranged at equal intervals, and the two kites are equal in number; in the ascending section and the descending section, each balancing kite opens the windcoat to generate the lifting force, so that the pulling forces of the balancing kites in the ascending section and the descending section are equal, only the positive pressure is generated on the rotating wheel, and no torque is generated.

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