A device for converting wave energy into the energy of mechanical motion devices and wave power

 

(57) Abstract:

Use: hydropower and can be used for receiving and storing mechanical or electrical energy as propulsion for marine vehicles. The essence of the invention: a device for converting wave energy contains two vertical walls rigidly interconnected by means of conversion elements arranged one above the other and in the form of flat blades wing-shaped profile, the latter is curved and are symmetrical and mirror relative to the horizontal plane at an acute angle thereto, with their convex surfaces facing each other with the formation of a smoothly tapering flat channel, and the side edges are flush mounted on the wall, with each successive channel is designed as a continuation of the previous one. Wave power plant comprises a cylindrical floating tank, partially filled with water, the Central tube passing axially through the Central portion of the bottom of the tank and submerged open end into the water, a stationary Central shaft passing axially through the tube and secured at the bottom, possibly with the help of anchors is ergie waves with the annular vertical wall, the inner part of the tank divided by a solid wall, running radially, into several sectors, and the inside of the pipe is fixed on the stationary shaft for rotation around the vertical axis of the tank, a tubular shaft on which is fixed a spiral blades, with the tube and the tubular shaft through a system of rigid links and bearings connected with the possibility of relative rotation. 2 C. n 2 Z. p. f-crystals, 6 ill.

The invention relates to hydropower and can be used for receiving and storing mechanical or electrical energy as propulsion for marine vehicles by converting the energy of waves.

Known wave power plant (application USSR N 1451326, F 03 13/12, publ.1989), in which the floating body is experiencing rolling and partially filling his fluid moves the flat edge of the float inside the housing. This movement through the flexible element is transmitted to the shaft of the PTO, and the latter actuates a generator.

The disadvantage of this technical solution is the low efficiency of converting wave energy into energy of movement of the float due to ego, F 03 13/12, obubl. 1990), which contains a cylindrical floating tank, able to swing on the waves. Inside the tank near its top surface installed circumferential rails mounted on the side walls of the tank, and on the axis of the tank a fixed rotary axis, which is perpendicular to it fixed levers having at their ends the goods and the rollers rolling along the rails. In this case, the energy of the waves, shaking the tank, is converted into the energy of the oscillating movements of the levers through which the rotary shaft and gidropony is transferred to the generator.

The disadvantages of this device are the low efficiency of conversion of wave energy into vibrational energy, undue complexity and structure.

Known wave power plant (USSR author's certificate N 1402705, F 03 B 13/22, publ. 1988) (prototype) containing floating body placed in it a generator and counting-critical device, concentric spaced vertical outer and inner shafts, two wheels with rotary blades having a wing-shaped symmetrical profile, with wheels mounted on the inner and outer shafts, respectively, which are connected to electrogenerator is very useful for design, due to the need of application devices, exercising asymmetrical installation of rotary blades, the low efficiency of the device due to the small relative velocity of the water relative to the blades, the inability of the accumulation energy of the waves.

Known wave power plant (Japan's bid N 63-32987, F 03 B 13/24, publ. 1989 ) (prototype), which contains the circular hollow float, floating on the water surface, the Central tube passing axially through the Central portion of the float and submerged open end into the water, pneumotonometer located in the pipe and driven by the flow of air in the pipe resulting from vertical movement of the float under the action of waves.

The disadvantages of this device are the low efficiency associated with a power take-off directly from the air stream, the lack of accumulation of wave energy, which leads to uneven process of energy conversion.

The problem solved by this invention is to eliminate these disadvantages, namely: improving the efficiency of energy conversion of the waves, the accumulation of wave energy in the form of mechanical energy, providing rawname as propulsion for marine vehicles.

This task is solved in that the device for converting wave energy, soderjashie two vertical walls rigidly interconnected by means of conversion elements arranged one above the other and in the form of flat blades wing-shaped profile, the profile is made curved and are symmetrical and mirror relative to the horizontal plane at an acute angle thereto, with their convex surfaces facing each other with the formation of a smoothly tapering flat channel, and the side edges are flush mounted on the wall with each successive channel is designed as a continuation of the previous.

Vertical walls and the side ends of the profiles are made arcuate, while the average width of the profiles are made rising to their end and from the previous channel to the next. In addition, the vertical wall can be made in the form of coaxial cylindrical rings, the external wall in the middle part is made with a circular section, which is equal to the height of the lowest height of the flat channel profile having the shape of ring segments, and the walls are rigidly connected with the tubular shaft, mounted for rotation on a vertical stationary Wake floating tank, partially filled with water, the Central tube passing axially through the Central portion of the bottom of the tank and submerged open end in the water, motionless Central al, passing axially through the tube and secured at the bottom, possibly with the help of anchors on the outside of the tank, slightly below its top surface is attached a device for converting wave energy with the annular vertical wall, the inner part of the tank divided by a solid wall, running radially, into several sectors, and the inside of the pipe is fixed on the stationary shaft for rotation around the vertical axis of the tank tubular shaft, which is fixed spiral blades, with the tube and the tubular shaft through a system of rigid links and bearings connected with the possibility of relative rotation.

The invention is illustrated by drawings, where Fig.1 shows a device with parallel vertical walls and identical transformative element of Fig.2 device with a curved vertical walls and extending to the end of the elements of Fig.3 the device with a cylindrical coaxial vertical and transformative elements, it is Asa on them with liquid, in Fig.5 wave power plant, and Fig.6 diagram illustrating the principle of operation of the wave power plant.

On the vertical walls 1 are rigidly fixed converting elements 2. If converting elements 2 are made identical and rectangular in shape, they are fixed in parallel vertical walls (Fig.1); if converting elements 2 have curved side edges of their blades 4 and done growing, then they fixed on a vertical arcuate walls (Fig.2); if converting elements 2 have the shape of a ring segment, they are fixed coaxially on the cylindrical vertical walls (Fig. 3, in this Fig. depicted for simplicity of the device).

Transforming element 3 consists of two flat blades streamlined 4 which are interconnected by rigid links 3 between the convex surfaces of the blades, facing each other, a flat tapering channel low input impedance. Transforming elements 2 are fixed on the vertical wall 1 so that the end of one element is located between the blades of the next, but between the upper blades of two adjacent elements, as well as between the bottom, there is C the elements attached to the walls without the formation of cracks between the wall and the side ends of the blades.

A device with a coaxial cylindrical vertical walls (Fig.3) internal wall 1 is rigidly connected by the links 7 with tubular PTO shaft 6, which is fixed for rotation around a common axis of the cylindrical wall on the fixed shaft 3, mounted or on the bottom, possibly with the help of anchors, or on any floating device, or using both. The outer cylindrical wall 1 is in the middle of the ring slit height equal to the height of the narrowest part of the flat channel between the blades transformative element.

In wave power plant (Fig.5) to the cylindrical surface of the floating tank 10 mounted converting elements 2 having the form of a ring segment, without crevices between the surface and the side ends of the blades 4, and to the opposite lateral ends of the blades 4 elements 2 mounted vertical cylindrical wall 1, having in the middle of the ring section. Tank surface is continuous vertical walls 3, which divides the inner cavity of the tank for a few sectors, is connected to a pipe 9 with the initial segment 12 with a low input impedance. Pipe 9 hard-link 7 by means of bearings 14 is connected with the tubular shaft otbody around the axis of the tank on the stationary shaft 5, attached to the bottom. Fastening system enables relative rotation of the output shaft and the pipe 9, passing through the bottom of the tank 11.

Elements 2 mounted on the surface of the tank below its upper edge on a level that wave, zakhlestina upper blade 4, did not cross over the edge of the tank, the same condition due to the degree of immersion in the water tank. Tube 9 relative to the tank 10 is located so that its upper end was at a level lying below sea level, this does not exclude the possibility that the upper end of the pipe 9 is located at the level of the bottom of the tank, and the buoyancy tank is provided with floats attached to its surface, it depends on the size of the tank and the operation mode.

A device for converting wave energy is as follows.

Rolling wave device causes oscillatory movement of the fluid relative to the device. In this part directed upward fluid flow, getting into the area between the vertical walls 1, communicates with the lower blades 4 transforming elements 2 (Fig.4, the lower Fig.), while part of the same flow around the convex surface of the vertical is on the top of the blade elements affects the flow of fluid, due to the fact that wave with shock properties, engulfing the top of the blade. The vertical component of the flow velocity of the liquid resulting from the interaction of the flow with the upper and lower blades 4 transforming elements changes its direction on the horizontal (Fig.4, the upper Fig.). In a flat channel between the upper and lower adjacent blades 4 transforming elements occurs during, the speed of which is directed along the horizontal axis of the channel, to some extent will increase from element to element. Thus, the transformative elements convert the vertical displacement of fluid caused by fluctuations in the environment of the device in horizontal directional fluid flow. As a result, the output of the device emitted a stream of liquid having a horizontally directed impulse, therefore the law of conservation of momentum to the device in the opposite direction will force defined by the formula:

< / BR>
where F is the force acting on the device;

P the momentum of the fluid;

the density of the liquid;

v the cross-sectional area of the output device;

V the velocity of the fluid.

Thus, the device (Fig.1 and f is s-wave device, having a cylindrical vertical wall (Fig. 3) leads to the fact that the stream of water flowing in a flat channel formed by the blade elements is thrown tangentially through the annular section of the outer wall. As a result of the moment of forces twists device, and therefore rigidly associated with the shaft 6 around the vertical axis of the device from which the rotation is transmitted in any known manner to the shaft electrogenerator. In this case, the device can be used as a stationary or portable power plants with relatively small power that converts wave energy into electrical energy.

Wave power plant operates as follows.

Effect of the waves on the blade transformative elements of the device with a cylindrical vertical wall (Fig.5), it is affected by torque, twisting tightly associated with the device tank 10 around its vertical axis. The liquid does not completely fill the tank through a continuous vertical walls 8, also starts to rotate, resulting in the redistribution of pressure (Fig.6). The pressure near the axis of rotation decreases, increase the spine of a rotating liquid. Because in the initial position, when the tank is stationary, the liquid level in the tank coincided with the level of the quiet sea, then in a rotating tank near its axis of rotation, directly above the upper end of the pipe 9, the liquid level is below sea level, resulting in broken hydrostatic balance between deep, not participating in the rotational motion, the liquid layers under the pipe and surface layers above the pipe. The pressure difference caused by a deviation from the condition of hydrostatic equilibrium, creates a moving vertically upwards through the pipe fluid flow, which, acting on the spiral blades 13 mounted on the shaft 6, causes it to rotate around the vertical axis of the tank from the shaft rotation is transmitted to the generator. The position of the upper edge of the tube 9 relative to the upper edge of the tank 10, i.e., the distance (Fig.6) is determined based on the form of a rotating surface, depending on the operation mode, i.e., the angular velocity of rotation of the tank and the tank diameter, the upper edge of the tube must be aligned with the bottom surface and the top edge of the tank with the upper level of the rotating surface, when this is taken into account only the amount of fluid that secure the blades transforming elements is determined based near the rotating outer surface of the tank liquid level is lowered in comparison with a level of calm seas, i.e., the height h (note that the reference elevation goes from the level of the calm sea), with a device for converting wave energy is fixed on the surface of the tank so that the annular slit on the outer cylindrical wall of the device was at the h level.

The use of the device for converting wave energy and wave power plant will improve the efficiency of the conversion of wave energy to store energy waves in the form of mechanical energy, thereby ensuring the uniformity of conversion of wave energy to expand the scope of use of the device, including using it as a thruster for a marine vehicle.

1. A device for converting wave energy comprising two vertical walls rigidly interconnected by means of conversion elements arranged one above the other and in the form of flat blades wing-shaped profile, wherein the profile is made curved and are symmetrical and mirror relative to the horizontal plane at an acute angle thereto, and a convex is Yu pinned on the walls, with each successive channel is designed as a continuation of the previous.

2. The device under item 1, characterized in that the vertical wall and the side ends of the profiles are made arcuate, while the average width of the profiles are made rising to their end and from the previous channel to the next.

3. The device under item 1, characterized in that the vertical wall is made in the form of coaxial cylindrical rings, the external wall in the middle part is made with a circular section, which is equal to the height of the lowest height of the flat channel profile having the shape of ring segments, and the walls are rigidly connected with the tubular shaft, mounted for rotation on a vertical stationary shaft.

4. Wave power plant containing a cylindrical floating tank, partially filled with water, the Central tube passing axially through the Central portion of the bottom of the tank and submerged open end into the water, a stationary Central shaft passing axially through the tube and secured at the bottom, possibly with the help of anchors, wherein the outer side of the tank, slightly below its upper surface, the anchor device for converting enei radially, in several sectors, and the inside of the pipe is fixed on the stationary shaft for rotation around the vertical axis of the tank, a tubular shaft on which is fixed a spiral blades, with the tube and the tubular shaft through a system of rigid links and bearings connected with the possibility of relative rotation.

 

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FIELD: wave-energy-to-electric-power conversion.

SUBSTANCE: proposed wave energy plant has supporting frame with vertical guides, float installed for vertical reciprocation that accommodates ratchet gears provided with coaxial central holes, shaft passed though these holes and fixed in supporting frame to laminar screw section whose top and bottom parts are twisted in opposition and contact ratchet gears disposed in cylindrical casing with through holes; it also has electric generator. Float is mounted for displacement along vertical guides and has inertial member disposed inside for rotation and displacement together with float; inertial member contacts inner surface of float casing through rollers. Cylindrical casing is joined with inertial member; electric generator is disposed within supporting frame and kinematically coupled through extensible joint between inertial member and drum installed for joint rotation with the latter and with gear transmission.

EFFECT: enhanced power output of wave energy plant generator.

1 cl, 1 dwg

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