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INVENTION
Russian Federation Patent RU2153598
CONTROL SPEED windwheels
Name of the inventor: Afanasiev YV .; Valitov JS .; Ismagilov F.R .; Khayrullin IH
The name of the patentee: Ufa State Aviation Technical University
Address for correspondence: 450000, Ufa Center Street. Karl Marx 12, USATU, patent department
Starting date of the patent: 1999.04.14
The invention relates to the field of wind energy and can be used to control the rotational speed of devices using the energy of moving fluids. The technical result consists in improving the accuracy of regulation of the speed of rotation of the propeller by employing the construction of the electromagnet is achieved by the fact that the speed regulator propeller comprises a generator connected to it an electrical load mounted on a rotating head pivotally attached to the hub, rotatably coaxially tower, two lateral lever associated with a rotary head and directed in opposite directions, a spring, one end of which is associated with one of the levers, the two plates are mounted on the arm ends fixed to the hub horizontal bar and the end vane and lug associated with another end spring terpolymer hinge mechanism, the first, second, third rods of which are connected a common hinge, with the first rod secured to the rotary head, the second and third rods pivotally connected to respective levers at points equidistant from the rod, wherein the levers are pivotally connected to the latter, according to the invention it is provided an electromagnet, the electromagnet armature is pivotally attached to one of the arms and the electromagnet inductor pivotally attached to the protrusion, and the electromagnet winding of the inductor connected in series with the generator electrical load circuit.
DESCRIPTION OF THE INVENTION
The invention relates to wind energy, namely, the speed controller windwheels.
Known speed controller propeller having mounted in the channel of each blade shaft and connected thereto a spring loaded flat valve disposed on the rear side of the blades, rods, each of which is provided with a locking element disposed on a working side of the blade, and arranged to move laterally, with respect to the blades, the direction of each valve is rigidly connected with the rod, and each blade is provided with a working side inlets, lockable shut-off element, and on the back - slit for the passage of the valve and an outlet (AC USSR N 1332069, F 03 D 7/04, 1987).
Known and control rotation speed propeller, comprising mounted on the shaft propeller polzushku and rigidly associated with the blades of wind wheel rotating dvuplechnye levers, first arm of each of which is provided with a load, and the second preloaded to polzushke using springs, each spring is mounted between the first arm diametrically opposite blades and ends pivotally connected to the shoulders, arms and pivot about the shaft axis are offset by equal distances in opposite directions (aS USSR N 1280182, F 03 D 7/04, 1986 YG).
Closest to the claimed a speed regulator propeller comprising two lateral lever associated with a rotary head propeller and oppositely directed from the tower propeller, a spring, one end of which is associated with one of the levers, the two plates are fixed to the ends of the levers, the sleeve pivotally mounted coaxially tower fixed to the hub horizontal bar with end vane and a projection connected to the other end of the spring, three-link hinge mechanism three rods which are connected a common hinge, with the first rod secured to the rotary head, the second and third rods pivotally connected with appropriate levers at points equidistant from the bar and the levers are pivotally connected to the latter (aS USSR N 1721286, F 03 D 7/02, 1992 YG).
The disadvantage of the speed controller is no propeller speed control system when changing the generator electrical load.
The object of the invention is to improve the accuracy of the propeller speed control by using a solenoid structure.
The problem is solved in that in the controller the rotational speed of the propeller, comprising a generator, with its attached electrical load mounted on a rotating head pivotally attached to the hub, rotatably coaxially tower, two lateral lever associated with a rotary head and aimed at opposite sides, a spring, one end of which is associated with one of the levers, the two plates are mounted on the ends of the arms fixed to the hub horizontal bar with end vane and a projection connected to the other end of the spring, three-link hinge mechanism, three rods are connected common hinge wherein the first rod is fixed to the rotating head, the second and third rods pivotally connected to respective levers at points equidistant from the bar and the levers are pivotally connected to the latter, in contrast to the prior art it is provided with the electromagnet, anchor and an inductor which are hinged respectively to one of the levers and to the protrusion, wherein the electromagnet coil inductor connected in series with the generator electrical load circuit.
Introduction electromagnet automatically adjusts propeller rotation speed of the generator when changing electrical load.
Being the device is illustrated by drawings.
FIG. 1 shows a general view of the propeller rotation speed regulator.
FIG. 2 - projection on the horizontal plane.
FIG. 3 - projection on a vertical plane.
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Speed controller propeller 1 comprises a generator 2, with its attached electrical load 3 mounted on a rotating head 4, is pivotally mounted on the sleeve 5 rotatably coaxially tower 6, two lateral levers 7 and 8 are associated with a rotary head 4 and directed in opposite directions, a spring 9 having one end connected to one of the arms 7 or 8, the two plates 10 and 11 mounted on arms 7 ends and 8 fixed to the sleeve 5, the horizontal rod 12 with end vane 13 and the protrusion 14 connected the other end of the spring 9, three-link hinge mechanism, the rods first 15, second 16, third 17, which are connected by a common pivot 18, the first rod 15 is fixed to the rotating head 4, the second 16 and third 17 rods are pivotally connected to respective arms 7 and 8 at points equidistant from the rod 12, the levers 7 and 8 are pivotally connected to the latter. The anchor of the electromagnet 19 is pivotally attached to one of the arms 7 or 8, the inductor 20 and the electromagnet is hinged to the protrusion, wherein the inductor winding 20 of the electromagnet incorporated in series electrical load 3 of the generator 2.
Speed controller propeller operates as follows. Vane 13 in the horizontal plane (see. Fig. 2) is set along the direction of the wind and rotates the head 4 with the wind wheel 1 so that the latter is placed against the wind (a = 0), the projection of the wind velocity vector to a vertical plane parallel to the axis of rotation propeller, will always be equal to the vector. The nominal position of the head 4 with the wind wheel 1 is determined by the angle b nom (see Fig. 3) between the axis of the propeller 1 and the projection of the nominal wind speed vector V rated on the vertical plane. The angle b SG determined resultant forces produced wind pressure on the wind wheel 1 and the plates 10 and 11, on the one hand, and the spring tension force 9 and the force retracting the armature 19 of the electromagnet, on the other, caused by the load rated current acting through a system of levers 7 and 8, the rods 15, 16, 17 on the head 4.
With increasing current in the electrical load circuit 3 is increased retracting force of the armature 19 of the electromagnet and the resultant force is broken, there is a head 4 rotate with the wind wheel 1 in the direction of decreasing the angle between the vector and the axis of the wind speed of the wind wheel 1, ie, Angle b is reduced, the rotational speed of the wind wheel 1 is increased, thereby, increases the active energy delivered to the generator, respectively, stabilizes the voltage at the terminals of the electrical load 3.
By reducing the current in the electrical load circuit 3, the retracting force of the armature 19 of the electromagnet is reduced, and the resultant force is broken, there is a head 4 rotate with the wind wheel 1 to increase the angle between the vector and the axis of the wind speed of the wind wheel 1, ie, angle b increases, the speed of the wind wheel 1 is reduced, thereby, reduces the active power delivered to the generator, respectively, stabilizes the voltage at the terminals of the electrical load 3.
With a decrease of wind speed relative to the nominal (electric load of the generator remains constant) forces created by wind pressure on the wind wheel 1 and the plates 10 and 11 are reduced and broken resultant force occurs wafer rotation 10 and 11 to increase the angle between the arms 7, 8 and the horizontal bar 12, head 4 with the wind wheel 1 rotate in the direction of decreasing the angle b between the axis of the propeller and the projection of the wind velocity vector V on the vertical plane, the rotation speed of the wind wheel 1 increases, the active energy is increased, respectively, supplied to the generator, thereby stabilizing the voltage at the terminals of the electrical 3 loads.
With increasing wind speeds in excess of par (electric generator load remains unchanged) forces created by the pressure of the wind on the wind wheel 1 and the plates 10 and 11 are increased, and violated the resultant force, rotates plates 10 and 11 in the direction of decreasing the angle between the arms 7, 8 and a horizontal rod 12, the head 4 with the wind wheel 1 rotate in the direction of increasing the angle b between the axis of the propeller and the projection of the velocity vector of the wind V on the vertical plane, the rotational speed of the propeller 1 is reduced correspondingly reduced active energy supplied to the generator, thereby stabilizing the voltage at the terminals of the electrical load 3. A further increase in wind speed comes a point where the angle b reaches its maximum value b max = 90 °, and the wind wheel 1 stops rotating and stops.
When the wind speed decreases to the calculated values, the pressure on the side plates 10 and 11 decreases and the spring 9 under the action of the wind wheel 1 occupies the working position (angle range ёb minb max
Thus, the claimed invention allows to improve the accuracy of speed control propeller.
CLAIM
Speed controller propeller comprising a generator connected to it an electrical load mounted on a rotating head pivotally attached to the hub, rotatably coaxially tower, two lateral lever associated with a rotary head and directed in opposite directions, a spring which has one end associated with one of the levers, the two plates are mounted on the ends of the arms fixed to the hub horizontal bar with end vane and a projection connected to the other end of the spring, three-link hinge mechanism three rods which are connected a common hinge, with the first shaft fixed to the rotating head second and third rods are pivotally connected to respective levers at points equidistant from the bar and the levers are pivotally connected to the latter, characterized in that it is provided with the electromagnet, anchor and whose inductor are hinged respectively to one arm and a protrusion, and the winding inductor electromagnet connected in series in the electrical load of the generator circuit.
print version
Publication date 03.04.2007gg
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