The method of converting wave energy into electrical energy and a device for its implementation

 

(57) Abstract:

Use: hydropower, wave power plant. The inventive device, comprising a fixed support with vertical posts located between the last with the vertical reciprocating movement of the horizontal support with eccentric weight and a floating platform with sensor inertial forces, and the eccentric weight is mounted on the horizontal shaft of the PTO with the possibility of rotation, and horizontal bearing kinematically connected with the floating platform and fixed bearing, carry out a preliminary promotion unbalance to a frequency higher than the frequency of the impinging wave, then when the unbalance is below the axis of rotation of the record support when lifting waves with supports of the platform, when recession - wave with fixed stops, and when the unbalance above the axis of rotation does the opposite fixation support stops, and the fixing support is carried out using a hydraulic circuit containing two hydraulic cylinders and two two-position valve spools. 2 S. p. f-crystals, 6 ill.

The invention relates to hydropower and can be used, for example, in wave power plants is thetsa fact, that way, including the reciprocating movement of the bearing with rotating unbalance and its alternate engagement with the fixed stops and the stoppers located on a floating platform, carry out a preliminary promotion unbalance to a frequency higher than the frequency of the impinging wave, after which when placed below the axis of rotation of the record support when lifting waves with supports of the platform, when recession - wave with fixed stops, and when the unbalance above the axis of rotation does the opposite fixation support stops.

Device, comprising a fixed support with vertical posts located between the last with the vertical reciprocating movement of the horizontal support with eccentric weight and a floating platform with a generator of electric current and the sensor inertial forces, and the eccentric weight is mounted on a horizontal shaft rotatably, and the horizontal bearing kinematically connected with the floating platform and fixed bearing, equipped with two-position valves and spool, a stationary bearing - horizontal bar attached to the tops of the uprights, and the kinematic connection of the horizontal supports are made in vidastat horizontal support, the piston rod is articulated to the platform and the horizontal crossbar, and rod and podpisniye cavity of each cylinder is communicated among themselves by means of the mentioned valves and spools, of which the first is connected with the sensor, the inertial forces of the platform, and the latter with the shaft unbalance.

In Fig. 1 and 2 shows the proposed device, the position of the elements when the rise of the wave front; Fig.3 and 4 - the same, with the slowdown of the wave front.

The method is as follows. The balance weight 1 set the rotation frequency greater than the frequency of the oscillations of the wave front, for example, in the direction indicated by the arrow in Fig.1-4. Then determine the angle of rotation for axis 2 unbalance 1. In the initial passage of the lower semicircle of the balance weight 1 when lifting with speed W of the wave front from a floating platform 3 support 4 axis 2 is fixed with the stop 5 of the platform 3 and move the axis 2 debalance 1 together with the platform 3 against the action of inertial forces to the moment when the position of the unbalance 1 (see Fig.2) corresponds to the beginning of the passage of the upper semicircle, i.e., the axis 2 debalance 1 is rotated by a half period (180about) rotation unbalance 1, while the linear velocity of center of mass unbalance 1 incremented V = 2W. emphasis 6, the platform 3 continues to move freely up the stationary axis 2 is fixed with the stop 6 and the eccentric weight 1 without changing its speed passes the upper semicircle of its trajectory, i.e., rotated another half period to the position corresponding to the beginning of the passage of the lower semicircle (see Fig.1). At this point, the support 4 with a fixed stop 6 respexit and simultaneously support 4 is fixed with an emphasis 5 floating platform 3 and again move the axis 2 debalance 1 together with the floating platform 3. Thus, for the entire half-period of the rise of the wave front is accelerated rotation unbalance 1, and the amount of force interactions axis 2 debalance 1 and the floating platform 3 is equal to the number of revolutions of the unbalance 1 for one half-period of oscillation of the wave. With the change of sign of the action of external forces, i.e., when the recession wave front defined by a witness after wave device, the conversion process movement is carried out in the same sequence, but with a phase shift (angle) axis 2 debalance 1 half period (see Fig.3). With the passage of the eccentric weight 1 lower polocrosse trajectory bearing 4 is fixed with a fixed stop 6, with emphasis bearing 5 4 raspoliruyte, floating PLA is NS 1 without changing its speed goes lower semicircle to the position corresponding to the beginning of the passage of the upper semicircle (see Fig.4). With the passage of the eccentric weight 1 upper semicircle with the slowdown of the wave front (see Fig.4) support 4 is fixed with an emphasis 5 floating platform 3, and a fixed stop 6 when this respexit, and axis 2 debalance 1 move the floating platform 3 is moved against the action of inertial forces, resulting in the linear velocity of center of mass unbalance 1 incremented V = 2W already on the decline of the wave front. For the entire period of the decline of the wave front is also accelerating the rotation unbalance 1, the number of force interactions axis 2 debalance 1 and the floating platform 3 is equal to the number of revolutions of the unbalance 1 for the second half-period of oscillation of the wave. The total increment of the linear velocity of center of mass unbalance 1 for one period of oscillation waves is equal to V = 2nW, where n is the number of revolutions of unbalance during the period of the oscillation wave; W - averaged speed of the rise and fall of the wave front.

Thus, converts wave energy with parameters varying randomly energy of the accelerated rotation unbalance without reconciliations frequency oscillations waves and rotating unbalanced rotor unbalance ">

The method of converting wave energy has the following advantages compared with the known multiple increment of energy from the source of vibrations corresponding to the number of revolutions of the rotor unbalance during one period of oscillation; the rotation speed of the unbalance can be quite high and can be determined only by the strength of the structure; to provide for the regulation of the rotor speed by changing the number of power take-offs from the device and to provide the best modes of conversion processes.

In Fig. 5 shows a General diagram of the device of Fig.6 - section a-a in Fig.5.

The device has an unbalanced rotor-unbalance 1, rotating with the shaft 2, the floating platform 3, the movable support 4, which is hosting the eccentric weight of 1 to the shaft 2 PTO (support 4 is rotated in the plane of the drawing). Bearing 4 is connected by means of hydraulic cylinders with floating platform 3 and the horizontal bar 7 attached to a stationary anchored racks (fixed support). As the stationary racks can be a dynamic anchor. Rigidly with the shaft 2 connected to the spools 8 and 9. Before spools on highways 10 and 11, intended for overflow work tion with an on / off valves 12 and 13. Highway 10 and 11 connect the hollow cylinders. On a floating platform 3 is also a generator of electric current, connected kinematic connection with the shaft 2 of the PTO.

The method of converting wave energy into electrical energy is carried out as follows. The shaft 2 with the eccentric weight of 1, which is connected rigid mechanical connection with the spools 8 and 9, spin up to speed, greater than the frequency of oscillation of a floating platform 3. In the recovery phase of the wave front from a floating platform 3 position on-off valves 12 and 13 shown in Fig.5. Rotating the eccentric weight of 1 to the shaft 2 passing through the lower and upper semicircle, its trajectory accordingly rotate the spools 8 and 9, and the passage of the eccentric weight 1 lower semicircle path valve 8 in accordance with the position of the two-position valve 12 in a half-turn unbalance 1 opens the line 10 for the free flowing of the working fluid cylinder of podpornoy cavity in the rod, and the valve 9 in accordance with the position of the two-position valve 13 on the same half of the turnover unbalance 1 closes highway 11 and the working body of podpornoy cylinder cavity in the rod cavity is not pirate the property nsimemory fluid as the working fluid) and bearing 4 with the balance weight 1 is moved upward against the action of inertial forces resulting unbalance 1 incremented speed. At the moment of time corresponding to the beginning of the passage of the eccentric weight 1 upper semicircle, the valve 8 in accordance with the position of the two-position valve 12 and 15 overlaps highway 10 in the second half of the turnover of the shaft 2 debalance 1, and the valve 9 opens highway 11 on the same half period for the free flowing of the working fluid cylinder of podpornoy cavity in the rod. Between the support 4 and the eccentric weight of 1 and a horizontal crossbar 7 is formed of a hard link and the shaft 2 debalance 1 support 4 is fixed and floating platform 3 freely rises, the balance weight 1 in this half-cycle of rotation of its speed does not change. This acceleration cycle of rotation unbalance 1 is carried out until the end of the rise of the wave front from a floating platform 3, with own rotation regardless of its frequency through the spools 8 and 9 debalance 1 provides a multiple increment its speed.

With the change of sign of the action of external forces, i.e., when the decay of the wave front from a floating platform 3, the sensor 14, the inertial forces through the control link 15 provides the turn-off valves 12 and 13 on the 90aboutin the direction of nudnyh holes spools 8 and 9 180about(a half-turn unbalance 1), in accordance with the shape of the bore spools 8 and 9. In this case, the plot of the decay of the wave front from a floating platform 3, with the passage of the eccentric weight 1 lower semicircle, the valve 8 in accordance with the rotated position of the valve 12 closes highway 10 and between the support 4 with the eccentric weight of 1 and the crossbar 7, attached to a stationary anchored racks, rigid connection is formed. Unbalance 1 does not change the speed for half of the turnover, and the valve 9 in accordance with the rotated position of the two-position valve 13 opens on the half-turn unbalance 1 line 11, and the working fluid flows from the rod end of a hydraulic cylinder podporchennuyu cavity. Floating platform 3 moves freely down. With the passage of the eccentric weight 1 upper semicircle on the site of the recession wave slide valve 9 associated with the shaft 2, opens the line 10 for the free flowing of the working fluid between the cavities of the cylinder, while the rigid connection between the support 4 and the crossbar 7, attached to a stationary anchored racks removed. In this same half-cycle turnover unbalance 1 valve 9 closes off highway 11, the working body of the cylinder is "locked" is the ANS 1, and the latter receives the velocity increment. Further cycles of acceleration unbalance 1 are repeated until the beginning of the rise of the wave front. The sensor inertial forces again through the management connection returns a two-position valves 12 and 13 in the initial position and the device continues to operate in the described sequence.

Eat energy unbalance 1 is performed upon reaching the rated speed of rotation unbalance 1 generator of electric current by means of kinematic connection of the generator shaft 2 PTO at any period raising or lowering boats on the wave.

1. The method of converting wave energy into electrical energy, comprising the reciprocating movement of the bearing with a rotating eccentric weight and sequential engagement with the fixed stops and the stoppers located on a floating platform, characterized in that, to improve efficiency, carry out a preliminary promotion unbalance to a frequency higher than the frequency of the impinging wave, then when the unbalance is below the axis of rotation of the record support when lifting waves with supports of the platform, when recession - wave with fixed stops, and when the unbalance above the axis of rotation is electrical energy, comprising a fixed support with vertical posts located between the last with the vertical reciprocating movement of the horizontal support with eccentric weight and a floating platform with sensor inertial forces, and the eccentric weight is mounted on the horizontal shaft of the PTO with the possibility of rotation, and horizontal bearing kinematically connected with the floating platform and fixed bearing, characterized in that, to improve efficiency, the device is equipped with two on-off valves and spool, a stationary bearing - horizontal bar attached to the tops of the uprights, and the kinematic connection of the horizontal supports are made in the form of two vertically arranged cylinders, sleeves are still connected to upper and lower horizontal supports, the piston rods articulated platform and horizontal bar, and rod and podpisniye cavity of each cylinder is communicated among themselves by means of the mentioned valves and spools, of which the first is connected with the sensor, the inertial forces of the platform, and the latter with the shaft unbalance.

 

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