High-efficiency direct-current power generation device with low flow rate

Abstract

The utility model discloses a low-flow-rate high-efficiency direct-current power generation device, which belongs to a low-flow-rate power generation device in the technical field of power generation equipment, and adopts the technical scheme that the low-flow-rate high-efficiency direct-current power generation device is provided with a support frame and comprises a duct pipe fixedly arranged between two horn units and used for communicating the two horn units; the axial flow turbine blades are rotationally arranged in the duct pipe; the disc type generator is fixedly arranged on the supporting frame, and the disc type generator is connected with a rotating main shaft of the axial flow turbine blade through a belt assembly; a blade type winding coil assembly and a rotor magnetic strip assembly are arranged in the disc generator; the utility model provides a low-flow-velocity high-efficiency direct-current power generation device, which adopts a double-horn structure to increase the flow velocity of fluid and increase the rotating speed of blades, so that the efficiency of a power generator is improved, and high-efficiency power generation in the scene of low wind speed and liquid fluid without water head fall is realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to power generation equipment technical field, concretely relates to a low flow rate's high -efficient direct current generator. BACKGROUND

[0002] In the scene of breeze power generation or sea tide power generation, river low flow rate, due to the slow rotation speed, often need to increase the speed device (gear or belt pulley) to improve the rotation speed, drive the generator effective power generation. The primary rotation speed can improve the rotation speed after increasing the speed, and the problem is that the primary source power thrust needs to be increased.

[0003] The biggest problem of the speed increasing device is the existence of loss, and the source power thrust is greatly improved. The more the speed increasing multiple, the higher the generator efficiency, but the original thrust is higher. In general, the source power thrust of breeze, low flow rate and other scenes is small, and the primary device cannot be driven to rotate, the rotation speed is zero, and the speed increasing problem does not exist. Therefore, in the low flow rate fluid environment, such as liquid (sea water, river water, etc.) or gas (air) and other fluids, the primary rotating device is rotated to drive the generator, and the speed increasing multiple is not too high, and even no speed increasing device, that is, directly driving the generator.

[0004] In the direct drive case, the rotation speed of the generator is slow, and the generator cannot effectively generate power. Therefore, in the case of slow fluid, the fluid speed needs to be increased and the structure of the generator needs to be improved.

[0005] In order to obtain higher voltage, increasing the rotation speed is one way. In the case where the rotation speed cannot be increased, only the structure of slow rotation speed can be designed to still induce higher voltage. According to Faraday's electromagnetic induction formula e=-n(dΦ) / (dt)=-nΔΦ / Δt. Increase the magnetic flux change rate. The key factor of change rate is time. When the magnetic flux change amount is certain, the shorter the change time, the higher the change rate, the higher the induced electromotive force e (voltage), and the larger the power generation power. At the same time, according to the law of Lenz, the higher the induced electromotive force, the greater the magnetic resistance, and a large enough driving force is needed to rotate the rotor. It is equivalent to the effect of force and reaction. Therefore, on the basis of thrust matching, the size of reasonable load is designed to achieve the purpose of most efficient power generation.

[0006] Further, in order to realize high efficient power generation in the scene of low flow rate, it is urgent to develop a power generation device to meet the power supply of users. UTILITY MODEL CONTENTS

[0007] The utility model aims at providing a low flow rate's high -efficient direct current generator, adopts double horn structure to improve the fluid flow rate, makes the blade rotation speed improve, thereby improves the efficiency of generator, realizes high efficient power generation in the scene of liquid fluid without water head difference and low wind speed.

[0008] The utility model discloses a kind of low flow rate's high-efficiency direct-current power generation devices, is provided with support frame, comprising:

[0009] Double-horn pipeline, the double-horn pipeline is horizontally fixed with the support frame, the double-horn pipeline is provided with two symmetrical horn units, and the small-diameter end of two horn units is connected;

[0010] Duct, the duct is fixed between two horn units, for the intercommunication between two horn units;

[0011] Axial turbine blade, the axial turbine blade is rotationally arranged in the duct;

[0012] Disc generator, the disc generator is fixed on the support frame, and the disc generator is connected with the rotating main shaft of the axial turbine blade by belt assembly;And

[0013] The disc generator is provided with blade type winding coil assembly and rotor magnetic strip assembly, the blade type winding coil assembly is fixed in the inside of the rotor magnetic strip assembly, and the rotor magnetic strip assembly is rotationally arranged in the disc generator.

[0014] Further, the axial turbine blade is rotationally arranged by mounting bracket arranged in the duct, the axial turbine blade is arranged in the duct, and fluid passes through the axial turbine blade.

[0015] Further, the blade type winding coil assembly includes circular ring support and multiple blade type windings arranged on the circular ring support, and multiple blade type windings are evenly distributed and arranged in the circumferential direction of the circular ring support.

[0016] Further, the circular ring support includes multiple spoke units, multiple spoke units are evenly arranged in the circumferential direction, and gap is arranged between adjacent two spoke units.

[0017] Further, the gap between two spoke units is "T" structure, blade type winding coil joint is arranged at the position of the gap, the blade type winding coil joint is adapted to the gap of the "T" structure and is fixed in the gap between two adjacent spoke units.

[0018] Further, the blade type winding is fixedly connected with the spoke unit by micro screw.

[0019] Further, the spoke unit is provided with inclined support rod, the included angle between the upper end of the support rod and the spoke unit body is 110 °, and the lower end of the support rod is fixedly connected with disc generator shell.

[0020] Further, the rotor magnetic strip assembly comprises a support rotating shaft, a circular ring magnetic strip support fixed at the upper end of the support rotating shaft, and an induction magnetic strip group arranged on the circular ring magnetic strip support, the induction magnetic strip group comprises two rows of magnetic strip groups, the two rows of magnetic strip groups are arranged at intervals in the vertical direction, and a plurality of blade type windings are arranged at intervals between the two rows of magnetic strip groups, and a rotating main shaft is arranged at the middle part of the upper end of the circular ring magnetic strip support.

[0021] Further, the polarities of the two rows of magnetic strip groups are opposite, and the same row of magnetic strip group is uniformly arranged by a plurality of magnetic strips with the same polarity.

[0022] Further, the polarities of the two rows of magnetic strip groups are opposite, and the same row of magnetic strip group is uniformly arranged by a plurality of magnetic strips with the same polarity.

[0023] The beneficial effects of the utility model are embodied in:

[0024] In the utility model, the fluid flow rate is improved by adopting the double-horn structure, the rotating speed of the blade is improved, and the efficiency of the generator is improved. Under the double effects of the double-horn speed increasing and the low rotating speed disc type direct current high efficiency generator, high efficiency power generation is realized in the scene of liquid fluid without water head difference and low wind speed; further, the disc type generator with large radius is designed, and the magnetic line cutting time of the more wide and narrow blade type winding coil is very short at slow rotating speed, so that the power generation efficiency is improved in the direct drive structure without the speed increasing device. When the fluid flow rate is low, the double-horn structure improves the fluid flow rate; the disc type generator has large radius and long circumferential length, and has high linear speed at low angular speed, the linear speed is the cutting speed, the cutting time is short at high speed, so that the speed increasing device can be omitted. The direct current generator output can directly float charge the storage battery and power the inverter, and a stable and continuous power supply is generated, which is equivalent to a large size passive UPS. The user can be directly powered, and the power grid can be provided with high quality power. The utility model can be popularized and applied in the scenes of wind power generation, sea wave and tide power generation, river bed slow flow power generation and the like. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings needed to be used in the specific embodiment or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally indicated by similar reference numerals. In the drawings, various elements or parts are not necessarily drawn according to the actual proportion.

[0026] Figure 1 It is a whole structure schematic view of the utility model power generation device;

[0027] Figure 2 It is a structure schematic view of the utility model blade type winding coil assembly.

[0028] Figure 3 The two spoke units interval schematic view of the utility model;

[0029] Figure 4 The utility model discloses a blade type winding coil joint structure schematic view;

[0030] Figure 5 The utility model discloses a blade type winding coil assembly and rotor magnetic strip assembly cross section schematic view;

[0031] Figure 6 The utility model discloses a circular ring magnetic strip support overhead schematic view;

[0032] Figure 7 The utility model discloses a micro screw hole on the local distribution schematic view of circular ring support;

[0033] Figure 8 The utility model discloses a micro screw hole on the cross section distribution schematic view of circular ring support;

[0034] Figure 9 The utility model discloses a micro screw hole on the projection distribution schematic view of circular ring support;

[0035] Figure 10 The utility model discloses a power generation device end surface structure schematic view;

[0036] Figure 11 The utility model discloses a power generation schematic view of one blade type winding;

[0037] Figure 12 The utility model discloses two rows of magnetic strip group distribution schematic view a;

[0038] Figure 13 The utility model discloses two rows of magnetic strip group distribution schematic view b;

[0039] Figure 14 The utility model discloses a low flow rate high -efficient power generation system composition schematic view;

[0040] Figure 15 The utility model discloses a double-horn pipeline installation on the overhead schematic view of platform;

[0041] Figure 16 The utility model discloses a power generation device and water flow direction's relation schematic view.

[0042] In the drawings, 1 - support frame, 2 - double-horn pipeline, 3 - horn unit, 4 - culvert pipe, 5 - axial flow turbine blade, 6 - disc generator, 7 - belt assembly, 8 - blade type winding coil assembly, 9 - rotor magnetic strip assembly, 10 - mounting bracket, 11 - circular ring support, 12 - blade type winding, 13 - spoke unit, 14 - gap, 15 - blade type winding coil joint, 16 - support rod, 17 - support rotating rod, 18 - circular ring magnetic strip support, 19 - induction magnetic strip group, 20 - magnetic strip group, 21 - rotating main shaft, 22 - circular track, 23 - reinforcing ring, 24 - liquid fluid buoyancy device, 25 - bearing. DETAILED DESCRIPTION

[0043] The embodiments of the technical scheme of the utility model will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, and therefore only serve as examples, and cannot limit the protection scope of the utility model.

[0044] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be understood as the usual meaning understood by the technical personnel in the field to which the utility model belongs.

[0045] Referring to Figures 1-16 A low-flow high-efficiency direct-current power generation device is provided with a support frame 1, comprising:

[0046] A double-horn pipeline 2 is horizontally fixed with the support frame 1, and the double-horn pipeline 2 is provided with two symmetrical horn units 3 connected at the small-diameter end.

[0047] A culvert pipe 4 is fixed between the two horn units 3 for communication between the two horn units 3.

[0048] An axial flow turbine blade 5 is rotationally arranged in the culvert pipe 4.

[0049] A disc generator 6 is fixed on the support frame 1, and the disc generator 6 is connected with the rotating main shaft of the axial flow turbine blade 5 through a belt assembly 7.

[0050] The disc generator 6 is provided with a blade type winding coil assembly 8 and a rotor magnetic strip assembly 9, the blade type winding coil assembly 8 is fixed inside the rotor magnetic strip assembly 9, and the rotor magnetic strip assembly 9 is rotationally arranged in the disc generator 6.

[0051] By setting the double-horn pipeline 2 on the support frame 1, and making the double-horn pipeline 2 be communicated by two symmetrically communicated horn single culvert pipes 4, the flow rate at the position of the culvert pipe 4 is large, thereby providing power source for the rotation of the axial flow turbine blade 5 arranged in the culvert pipe 4, at the same time, the rotation of the axial flow turbine blade 5 is transmitted to the disc generator 6 arranged on the support frame 1 through the belt assembly 7, the disc generator 6 is rotated and controlled, thereby driving the rotor magnetic strip assembly 9 in the disc generator 6 to rotate around the fixedly arranged blade type winding coil assembly 8, and the operation of generating electricity is realized.

[0052] The disc generator 6 has a stator and a rotor, in the disc generator 6, the blade type winding coil assembly 8 is the stator, the rotor magnetic strip assembly 9, the blade type winding coil assembly 8 is fixedly arranged in the middle, and the rotor magnetic strip assembly 9 is arranged outside the blade type winding coil assembly 8, thereby realizing the operation of cutting the magnetic induction line after relative motion to generate electricity.

[0053] In order to realize slow rotation speed and effective power generation, the generator structure needs to be designed skillfully.

[0054] As described above, when the magnetic flux change amount is certain, the shorter the time for the magnetic flux to complete the change, the higher the change rate of the magnetic flux, and the higher the induced electromotive force e (voltage) and the greater the power generation. The coil moves in the magnetic field to cut the magnetic force line to induce voltage (current) to generate electricity, the faster the coil moves, the shorter the time for the coil to cut the magnetic force line, that is, the shorter the change time. If the rotor rotates slowly, the coil will cut the magnetic field for a long time, on this basis, the action of the coil cutting the magnetic field can be regarded as the relative motion of the coil and the magnetic field, in the case that the coil is not moving, the speed of the magnetic field relative to the coil can be increased, that is, the relative motion speed of the coil and the magnetic field is increased, so that the magnetic flux change efficiency is improved. A magnetic field is formed by N and S polarity magnetic strips, and the coil is induced to generate voltage (current) when the magnetic strips pass through the coil quickly. When the moving speed is certain, the narrower the width of the coil, the shorter the time for the magnetic strip (magnetic field) to pass through the coil, that is, the shorter the cutting time. For example, if the magnetic strip moves at a speed of 2 meters per second, and the width of the coil perpendicular to the magnetic field is only 2 centimeters, then the time for cutting the magnetic field once is 0.01 seconds. When the length of the coil is 20 centimeters, the cross-sectional area of the coil perpendicular to the magnetic field is 40 square centimeters, and when the magnetic induction intensity of the permanent magnet reaches 1.5 T, the magnetic flux reaches 0.006 Weber, 0.01 seconds change from 0 to 0.006 Weber, one turn of the coil can induce 0.6 volts, and if the coil winding is 60 turns, the induced electromotive force is 36 volts. Further increasing the moving speed, for example, from 1 meter per second to 10 meters per second, the induced electromotive force is 360 volts.

[0055] When the single winding induces electromotive force (voltage) of only 36 volts, multiple winding outputs can be connected in series. In order to eliminate the negative polarity of alternating current, the induced voltage of each winding output is first full-wave rectified into a pulsating direct current (unidirectional), and the circuit is connected in series to obtain higher voltage. For example, 10 winding outputs of 36 volts, after rectification and series superposition, a fluctuating direct current with a maximum peak of 360 volts is obtained. Therefore, direct current superposition can eliminate the counteracting effect of negative polarity, and the efficiency is higher.

[0056] As a preferred embodiment, the axial turbine blade 5 is rotatably arranged in the duct pipe 4 through a mounting bracket 10, and the axial turbine blade 5 is arranged on the cross section through which the flow of the duct pipe 4 passes.

[0057] In order to achieve better rotation power supply, the axial turbine blade 5 is rotatably arranged in the duct pipe 4 through the mounting bracket 10, and the axial turbine blade 5 is arranged on the cross section through which the flow of the duct pipe 4 passes, thereby generating better rotation driving force.

[0058] As a preferred embodiment, the blade winding coil assembly 8 comprises a circular ring bracket 11 and a plurality of blade windings 12 arranged on the circular ring bracket 11, and the plurality of blade windings 12 are uniformly arranged in the circumferential direction of the circular ring bracket 11.

[0059] Regarding the structure of the stator, the stator is a circular ring of stacked blade windings on a circular ring support. That is, the circular ring support supports the coils to form the stator. The circular ring support is a circular ring of several (6-30) spokes, with a gap between two spokes, and the width of the gap is slightly wider than the blade winding, so that the blade winding coil can be fitted into the circular ring support. Several tens or even hundreds of blade winding coils are stacked in a circle to form a stator to accept the rotating magnetic strip (rotor) to cut the magnetic field lines, the coil induces voltage, and generates current in the closed loop, that is, to emit electricity. Each spoke has a gap on the left and right, like a T-shaped structure. The blade winding is hollow and long in shape to fit into the circular ring support (skeleton); the winding is wound around the copper wire on the skeleton, and two fixed small holes are formed to fix the blade winding on the circular ring support with screws. Since the stator is stationary and the blade winding does not rotate, there is no rotational inertia and no displacement force, so a small screw can be used for fixation. The number of spokes and reinforcing rings is determined according to the radius. The larger the radius, the longer the circumference of the circular ring, and the more blade winding coils there are. For example, when the radius is 1 meter, the circumference of the circular ring is more than 6 meters, and 240-300 blade winding coils with a width of 2 centimeters can be fitted and stacked, which may weigh up to 150 kilograms. The support needs to be more robust. If the radius is only 0.6 meters, the circumference of the circular ring support of the blade winding coil is about 3.6 meters, and 120-160 blade winding coils with a width of 2 centimeters can be stacked, which is lighter, and the circular ring support can be appropriately lighter.

[0060] By providing the circular ring support 11 and the plurality of blade windings 12 arranged on the circular ring support 11 in the blade winding coil assembly 8, and uniformly distributing the plurality of blade windings 12 on the circular ring support 11, the conditions for magnetic field cutting between the blade winding coil assembly 8 and the rotor magnetic strip assembly 9 to generate electricity are provided.

[0061] Preferably, the circular ring support 11 includes a plurality of spoke units 13, and the plurality of spoke units 13 are arranged uniformly in the circumferential direction, and a gap 14 is arranged between two adjacent spoke units 13.

[0062] The number of blade windings must be preformed standard parts, and the fixing method of the support is relatively easy to produce and maintain. The left and right sides of the spoke have a gap. The gap width is slightly wider than the winding width (such as 2 cm), for example, 3 cm. The gap can have a special structure to supplement a winding, and the windings are uniformly distributed as a whole.

[0063] In order to realize the fast and convenient setting of the plurality of blade windings 12 on the spoke units 13 and make the plurality of blade windings 12 distributed in a circular shape, the component for cutting the magnetic field to generate electricity is provided, the gap 14 is arranged between the two spoke units 13, and the corresponding spoke unit 13 is sleeved on the spoke unit 13 through the position of the gap 14.

[0064] As preferred, the gap 14 between the two spoke units 13 is in a "T" shape structure, the position of the gap 14 is provided with a blade winding coil joint 15, and the blade winding coil joint 15 is matched with the "T" shape gap 14 and fixed in the gap 14 between the two adjacent spoke units 13.

[0065] By setting the gap 14 in a "T" shape structure and arranging the corresponding blade winding coil joint 15, the blade winding coil joint 15 is also provided with the corresponding blade winding coil, and then the blade winding coil joint 15 is arranged in the gap 14, so that the ends of the plurality of uniformly distributed spoke units 13 form a complete circle, thereby better realizing the magnetic induction power generation.

[0066] Specifically, the T-shaped structure is processed at the notch: a blade winding coil is embedded on a T-shaped skeleton, the notch is filled, and after glue is applied, the two sides are connected by small screws. The blade winding coil is supplemented in the notch, and the coils are basically uniformly distributed on the circular support. The side view of the T-shaped structure supplemented with a blade winding coil is as shown in Figure 3 :

[0067] As preferred, the blade winding 12 is fixedly connected with the spoke unit 13 through a micro screw.

[0068] The circular support of the blade winding coil has two fixed small holes at each coil position.

[0069] Referring to Figure 7 , Figure 8 and Figure 9 , the circular support has two rows of small holes for screwing and fixing the blade winding coil. The diameter of the small hole is small (2mm or less), and the screw and nut are fixed to the winding. Because the stator does not rotate, there is no rotational inertia, and only part of the winding has a certain vertical static force when the disc generator is vertically installed, so the fixing is relatively easy.

[0070] The rotor is two rows of neodymium permanent magnet magnetic strip, with the blade type winding coil rotation, to provide a changing magnetic field, so that the coil induced voltage (current) to. Rotor is fixed two rows of magnetic strip bracket, a slightly larger than the winding ring ring-shaped bracket, a slightly smaller than the winding ring ring-shaped bracket. Two circular ring-shaped bracket fixed a row of magnetic strip. Equivalent to two magnetic strip will be around the ring-shaped bracket in the middle of the winding ring. Two rows of magnetic strip spacing is not too large, to rotate the jitter tolerance does not touch the coil can be. Leave a certain amount of space, in the jitter is not magnetic strip touch coil, reduce damage.

[0071] As preferred, the spoke unit 13 is provided with an inclined support rod 16, the included angle between the upper end of the support rod 16 and the body of the spoke unit 13 is 110°, and the lower end of the support rod 16 is fixedly connected with the disc generator housing.

[0072] The spoke circular ring-shaped (disc) bracket is actually a hollow pot cover structure, which is inclined from the center to the edge. The spoke and the bracket (T-shaped upper portion) of the blade type winding at the end have an included angle with the spoke, which is about 110°. If the angle is 90°, the rotor end will easily collide with the spoke to cause physical contact and mechanical friction, which will reduce the efficiency and even damage the components. When the angle is about 110°, the spoke end is under greater stress, which requires a thicker spoke, resulting in increased material usage and weight. Therefore, about 110° is more appropriate. The total thickness of the magnetic strip and the bracket for fixing the magnetic strip plus the distance from the stator coil is about 8 cm, and the tangent value of 20° is tan(20°) = 0.36397, and the opposite side is about 3 cm. Therefore, 110° has a surplus space of 3 cm, and even if there is fluctuation during rotation of the rotor, physical contact and friction will not occur. When the stator radius is 80 cm, 30 cm of space is left for the installation of the full-wave rectifier and the wire series and parallel connection.

[0073] The entire bracket of the fixed magnetic strip forms a rotor, and the two rows of magnetic strips of the rotor hold the stator blade type winding to rotate. The arranged magnetic strips pass through each blade type winding coil in turn, cut the magnetic lines, induce electromotive force on the coil, and close the current, thereby generating electricity.

[0074] The faster the rotor rotates, the shorter the time the magnetic strip passes through the coil, i.e., the shorter the cutting time, and the higher the induced electromotive force.

[0075] As preferred, the rotor magnet strip assembly 9 comprises a support rotating rod 17, a circular ring magnet strip support 18 fixed at the upper end of the support rotating rod 17, and an induction magnet strip group 19 arranged on the circular ring magnet strip support 18, the induction magnet strip group 19 comprises two rows of magnet strip groups 20, the two rows of magnet strip groups 20 are arranged in a vertical direction, a plurality of the blade type windings 12 are arranged between the two rows of magnet strip groups 20 and spaced from the magnet strip groups 20, and a rotating main shaft 21 is arranged at the middle of the upper end of the circular ring magnet strip support 18.

[0076] Therefore, it can be understood that the rotor magnet strip assembly 9 is arranged in rotation in the disc generator 6, the bottom of the support rotating rod 17 can be rotatably arranged in the interior of the disc generator 6 through a bearing 25, and the rotating source of the entire rotor magnet strip assembly 9 is that the rotating power is transmitted to the rotating main shaft 21 through the belt assembly 7, so that the entire rotor magnet strip assembly 9 rotates.

[0077] According to the requirement of direct current output, the magnet strips of the rotor can be arranged in two ways. Figure 12 One is that the adjacent neodymium permanent magnet strips are arranged in the same polarity, and the single-direction direct current is induced in the winding coil after the rotation of the rotor. Figure 13 The other way is that the adjacent neodymium permanent magnet strips are arranged in the alternating polarity, and the alternating current is induced, and the full-wave rectification method needs to be adopted to obtain the single-direction direct current.

[0078] When a plurality of single-direction direct currents are connected in series, the final output voltage is higher and the fluctuation is smaller, when the maximum value of the single winding direct current is V, if N single-direction direct currents are connected in series, the total voltage is equal to the sum of each voltage, that is, the maximum value of the total voltage is N*V.

[0079] The method of series connection is to superimpose the windings with equal intervals in the physical position, so that the magnetic resistance force is evenly distributed on the circular ring, which facilitates the smooth rotation of the rotor and achieves the effects of reducing the thrust and reducing the shaking.

[0080] As preferred, the polarities of the two rows of magnet strip groups 20 are opposite, and the same row of magnet strip groups is uniformly arranged by a plurality of magnet strips with the same polarity.

[0081] The space between the magnet strips is the circular ring support with the magnet strips rotating, for the fixed blade type winding, the magnetic induction intensity changes from the maximum to zero, and the change of the magnetic induction intensity occurs in a very short time, so that the voltage (current) can be induced. The core point is the magnetic flux change rate. Generally, the coil winding is about 100 turns, too much weight, too little induction electromotive force is low. Comprehensive balance consideration.

[0082] As a preferred, two rows of said magnetic strip group 20 opposite position polarity opposite, the same row of magnetic strip group by a plurality of uniform distribution of alternating polarity magnetic strip.

[0083] Magnetic strip polarity alternately, when the mosaic magnetic ring-shaped support rotation, the magnetic field lines direction changes, the induced voltage polarity also changes, the induced is alternating current, frequency may from dozens of Hz to hundreds of Hz, need full-wave rectification into a pulsating unidirectional DC to be in series superimposed, increase voltage output. Magnetic strip alternately arranged, the magnetic field changes more, the induced magnetic flux change rate is also large.

[0084] Referring to Figure 14 In order to realize the effective delivery of magnetic induction power generation, the disc generator load (power grid) is decoupled, and the output direct current is converted by a direct current converter (DC / DC). The fluctuating unidirectional direct current is output as a relatively stable and less fluctuating direct current. The direct current voltage can be used to float charge the battery pack. The input end of the inverter is connected to the battery, and the output end of the inverter is connected to the user load or the power grid.

[0085] After the battery is floated by the direct current converter, the three-phase alternating current is converted by the inverter. The frequency of the generator speed and the induced voltage (current) is decoupled from the frequency of the power grid. The power generation part generates power at will, according to the highest efficiency of mechanical energy conversion to electrical energy, and there is no need to consider the frequency of the user or the power grid. That is, the direct current generator is completely decoupled from the power grid, and the power generation efficiency is high. The number of blade windings is hundreds, and the power induced by one reaches 1kW. The maximum power generation power can reach hundreds of kW. The biggest advantage of decoupling is that the generator generates power in the highest conversion efficiency, fully utilizes mechanical energy (wind energy and water energy). That is, the working state of the generator is irrelevant to the load (power grid).

[0086] As a preferred way of the embodiment, the device has multiple scene applications. Low flow rate gas and liquid can use the Venturi principle to increase flow rate, thereby increasing fluid flow rate. High fluid flow rate blows the fan blade at high speed, drives the disc generator rotor to rotate fast, and effectively improves the power generation efficiency of the generator. After the flow rate of the fluid is improved, it still cannot meet the requirements of normal high-efficiency power generation. The generator is improved to a blade type multi-winding generator, which is decoupled from the load (user or power grid), so that the generator converts mechanical energy into electrical energy in the highest efficiency. The low flow rate fluid is mainly liquid and gas. The liquid is mainly seawater and river water. In the low flow rate and flat environment without obvious drop, such as ocean currents, waves near the coast, and flat sections of rivers, the flow rate can be increased to 5-10 m / s to drive the generator to generate power. The gas is mainly air, that is, the wind power scene is mainly used.

[0087] 1. In the low flow rate environment of liquid fluid

[0088] The flow rate of ocean current is also low. The power generation system with double-horn structure arranged along the wind direction of ocean current can obtain power on the sea. On the coast, the double-horn power generation system is deployed vertically to the coast. The sea waves wash the coast back and forth, and the sea waves form tides back and forth. Thus, the two-way sea water flow can generate electricity.

[0089] In some rivers, the power generation system with double-horn structure is placed along the direction of river flow. The flow rate of river water is about 1 meter / second. The flow rate in the channel between the double horns is 5-10 meters / second, which drives the turbine blades in the channel to rotate, drives the rotating shaft to rotate, and drives the disc generator outside the turbine blades 5-10 meters to generate electricity.

[0090] The double-horn fluid speed-increasing power generation device mentioned in the Venturi principle can be arranged symmetrically or asymmetrically according to the actual environment.

[0091] The low flow rate fluid (liquid such as water and gas such as air) enters from the large horn mouth to the channel of the narrow pipe throat, the pressure increases, and the flow rate increases. The increase multiple is the square root value of the ratio of the inlet circular cross-sectional area A1 to the channel circular cross-sectional area A2.

[0092] Suppose the fluid flow rate is increased by 5-10 times. When the fluid speed is 2 meters / second, the fluid speed inside the channel will reach 10-20 meters / second, which drives the axial fan blades to rotate, drives the shaft to rotate, and drives the disc DC generator rotor at both ends to rotate to generate electricity.

[0093] In the liquid fluid environment, an air-filled buoyancy device can be added, such as a liquid fluid buoyancy device 24 arranged in Figure 1 The entire power generation system is at an appropriate height. For example, in seawater, the water flow formed by ocean current or the waves not far from the coast flow back and forth, and both ends can enter seawater to generate electricity. That is, the surge in both directions can generate electricity. In the application environment of liquid fluid, the heat dissipation effect is good. In the application environment of liquid fluid, such as placing the double-horn power generation system horizontally in a larger river, the double-horn power generation system is arranged along the direction of water flow. When the flow rate of river water reaches about 2 meters / second, it can effectively generate electricity. Thus, it is not necessary to use the fall to generate electricity, or the fall is very small when the river flows horizontally. After the water flow rate increases a little through the double-horn system, the flow rate in the channel increases, which drives the turbine blades of the axial fan in the channel to rotate faster, and the long shaft transmits to the disc generator at both ends (or outlets) to generate electricity.

[0094] The generator is placed in water, and the waterproof of the disc type generator needs to be handled. The solution to reduce the waterproof requirement is to place the disc type generator on the platform on the water surface, and the power is transmitted to the runner of the generator by the belt, and the runner drives the generator to rotate to generate electricity. The belt pulley can be speeded up by 2-3 times, further increasing the speed of the generator rotor, thereby further improving the efficiency of the generator. The output of the direct current in the water application environment is controlled within 300 volts to avoid safety hazards caused by leakage. The direct current is relatively safe, and the cable of a pair of direct current lines reaches the shore, and after direct current conversion and battery, the inverter outputs three-phase or single-phase alternating current for users to use.

[0095] 2. Application in low-speed gas fluid environment

[0096] In mountainous areas, many mountains, hills and ridges, or passes, have difficulty in inputting power grids. In these places, the direction of air flow is relatively fixed, and the double-horn structure generator system can effectively obtain power and solve the power supply problem in the edge mountain area. The air flow forms wind, and the wind speed is 2-5 meters / second, and the double-horn system will generate a wind speed of 10-25 meters / second in the channel to push the turbine blades to rotate quickly and drive the generator to generate electricity effectively.

[0097] In the low-speed wind power environment, it is installed in the wind direction which is relatively fixed and adapts to the wind direction. According to the wind rose diagram of wind direction for many years, the horn mouth is aligned with the wind direction when installed, so that the most efficient power generation can be achieved.

[0098] Reference Figure 15 In the air fluid wind power environment, only the outlet is installed with a generator, a rotatable platform can be installed under the entire support to support the double-horn device. The platform has a circular track, and the track on the platform carries the double-horn power generation system. The entire double-horn power generation system is fixed on a flat plate, and the flat plate is connected to the circular track by wheels. The circular track is installed on a concrete platform on the ground; when the wind direction changes, the entire double-horn power generation system rotates through the circular track to adjust the horn mouth to face the direction of the wind to obtain the maximum wind energy. This can be applied to occasions with changing wind directions. According to the information given by the wind direction tester, the flat plate on the platform is rotated by the intelligent control system, and the horn mouth of the double-horn power generation system carried by the flat plate is aligned with the maximum wind direction to adjust to obtain the maximum power generation power.

[0099] The turbine blade fan is driven by the high-speed airflow after compression, and drives the shaft to rotate, thereby driving the disc generator to rotate and generate electricity. The diameter of the disc generator is larger than that of a general generator, so that low rotation speed can still effectively generate electricity. The generator outputs direct current, which is charged (float charging) to the storage battery through a direct current converter (DC / DC). The two ports (positive and negative) of the inverter are respectively connected to the positive and negative poles of the storage battery, and the output of the inverter is three-phase alternating current, and the voltage is adjusted and determined according to the user or power grid requirements.

[0100] wherein, Figure 14 is a block diagram of a low-flow high-efficiency power generation system.

[0101] The working principle and working process of the utility model are as follows:

[0102] The low-flow high-efficiency direct current power generation device provided by the utility model provides power source for the rotation of the axial turbine blade 5 arranged in the duct pipe 4 by arranging the double-horn pipeline 2 on the support frame 1, and transmitting the rotation of the axial turbine blade 5 to the disc generator 6 arranged on the support frame 1 through the belt assembly 7, thereby rotating the disc generator 6, driving the rotor magnetic strip assembly 9 in the disc generator 6 to rotate, and rotating the rotor magnetic strip assembly 9 around the fixedly arranged blade type winding coil assembly 8, thereby realizing the operation of generating electricity.

[0103] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should be covered in the scope of the claims and the specification of the utility model.

Claims

1. A high efficiency direct current power generation device of low flow rate, provided with a support frame (1), characterized in that, The utility model relates to a kind of double-horn pipe and disc generator, including: Double-horn pipe (2), the double-horn pipe (2) is horizontally fixed with the support frame (1), the double-horn pipe (2) is provided with two symmetrical horn units (3) of intercommunication, two small caliber ends of the horn unit (3) are connected and arranged; Duct (4), the duct (4) is fixedly arranged between two horn units (3), for the intercommunication arrangement between two horn units (3); Axial turbine blade (5), the axial turbine blade (5) is rotationally arranged in the duct (4); Disc generator (6), the disc generator (6) is fixedly arranged on the support frame (1), and the disc generator (6) is connected with the rotating main shaft of the axial turbine blade (5) by belt assembly (7);And The disc generator (6) is provided with blade type winding coil assembly (8) and rotor magnetic strip assembly (9), the blade type winding coil assembly (8) is fixedly arranged in the rotor magnetic strip assembly (9), and the rotor magnetic strip assembly (9) is rotationally arranged in the disc generator (6).

2. The low flow rate high efficiency DC power generation device according to claim 1, wherein The axial turbine blade (5) is rotationally arranged by mounting bracket (10) arranged in the duct (4), the axial turbine blade (5) is arranged in duct (4), and fluid passes through axial turbine blade (5).

3. The low flow rate high efficiency DC power generation device of claim 2, wherein, The blade type winding coil assembly (8) includes circular ring support (11) and multiple blade type windings (12) arranged on the circular ring support (11), and multiple blade type windings (12) are evenly distributed and arranged in the circumferential direction of the circular ring support (11).

4. The low flow rate high efficiency DC power generation device according to claim 3, wherein The circular ring support (11) includes multiple spoke units (13), and multiple spoke units (13) are evenly arranged in the circumferential direction, and gap (14) is arranged between adjacent two spoke units (13).

5. The low flow rate high efficiency DC power generation device of claim 4, wherein, The gap (14) between two spoke units (13) is "T" structure, and blade type winding coil joint (15) is arranged at the position of the gap (14), the blade type winding coil joint (15) is adapted to the gap (14) of the "T" structure and is fixed in the gap (14) between two adjacent spoke units (13).

6. The low flow rate high efficiency DC power generation device of claim 4, wherein, The blade type winding (12) is fixedly connected with the spoke unit (13) by micro screw.

7. The low flow rate high efficiency DC power generation device of claim 4, wherein The spoke unit (13) is provided with inclined support rod (16), the included angle between the upper end of the support rod (16) and the spoke unit (13) body is 110 °, and the lower end of the support rod (16) is fixedly connected with disc generator shell.

8. The low flow rate high efficiency DC power generation device of claim 1, wherein, The rotor magnetic strip assembly (9) comprises a support rotor rod (17), a circular ring magnetic strip support (18) fixed on the upper end of the support rotor rod (17), and an induction magnetic strip group (19) arranged on the circular ring magnetic strip support (18), wherein the induction magnetic strip group (19) comprises two rows of magnetic strip groups (20), the two rows of magnetic strip groups (20) are arranged in a spaced manner in the vertical direction, a plurality of the blade type windings (12) are arranged between the two rows of magnetic strip groups (20) and are arranged in a spaced manner with the magnetic strip groups (20), and a rotating main shaft (21) is arranged at the middle of the upper end of the circular ring magnetic strip support (18).

9. The low flow rate high efficiency DC power generation device of claim 8, wherein, The polarities of the two rows of magnetic strip groups (20) are opposite, and the same row of magnetic strip groups are uniformly arranged by a plurality of magnetic strips with the same polarity.

10. The low flow rate high efficiency DC power generation device of claim 8, wherein, The polarities of the opposite positions of the two rows of magnetic strip groups (20) are opposite, and the same row of magnetic strip groups are uniformly and alternately arranged by a plurality of magnetic strips with opposite polarities.

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