Wave power generating station

FIELD: power engineering.

SUBSTANCE: device is designed to supply stationary and mobile consumers. Proposed power generating station contains system of floats, kinematic system with overrunning clutches and flywheel coupled with electric generator. Floats are connected with dynamic anchor by prestressed elastic ties. Kinematic system has common multilink propeller shaft connected with body of each float by kinematic pair with gear ratio rising from link to link in direction from machine compartment and connected with flywheel either rigidly through torque limiting clutch, to shaft of flywheel speed stabilizer made in form of dynamic clutch is connected directly or through step-up gear. Rotor of electric generator is coupled with dynamic clutch.

EFFECT: provision of use of wave irrespective of amplitude of waves.

4 dwg

 

The invention relates to the field of electric power industry, in particular to electricity generating plants that use the energy of sea waves. Such modules installed with a certain step along the coast, can serve not only as a source of electricity, but also the construction of the engineering protection of the coast from the effects of large waves.

There are many known designs of wave energy Converter in electrical energy from experimental models to industrial installations. Some of them are very successful on the efficiency of selection of wave energy (Salter's Duck, a raft of Cockerell and others). However, the practical implementation of such projects involves high material costs due to low efficiency of energy transfer from the recipient device to the shaft of the generator. In addition, the first of these power plants are not adapted to the orientation of the wave front, while the second to the length of the latter. These shortcomings hinder the wide application of these power plants (VA-boxes. The conversion of the energy of the ocean. - L.: "Shipbuilding", 1986, p.140-142). It should be noted that the idea of using the system associated floats in the form of a contour of the raft, proposed in 1935 KE Tsiolkovsky, is the most promising and wave energy, and engineering protection of coastlines from wave erosion (see the same s).

The famous "dot" wave energy Converter into electricity using different kinematic transmission. These include Wave energy machine" (U.S. Pat. EN 2141057, CL 6 F03 13/20), "Float wave electric power station" (U.S. Pat. EN 2037642, CL 6 F03 13/16), as well as power plant, protected by patent RU 2221933, CL F03 13/18 "Way to use the energy of the sea waves and device for its implementation". To their common drawbacks of low efficiency in the selection of wave energy, the imperfection of the mechanism of its transmission to the shaft of the generator, the frequency instability of its rotation, and hence the parameters of the generated electrical energy. Moreover, they are not able to considerably reduce dangerous to the shores of the sea.

Closest to the claimed invention, the technical solution (along with contour raft Tsiolkovsky) is the Wave power plant", was developed in JSC "Belgorod power machine building plant" (U.S. Pat. EN 2147077, CL 7 F03 13/16), adopted for the prototype.

The present invention presents the wave power installation comprising above the water surface of the frame with the ground and floats, United by a block of bevel and cylindrical gears and gear PTO shaft on which you installed the flywheel and clutch to connect the texts with the generator, characterized in that it has floats attached to the rods not of the same length with a common axis and having the shape of a triangular prism with exposed faces, independent of their relative movements, and the space between the side floats are made with enabling free passage of the wave on the average float.

Here is a valuable idea dispersion floats, perceiving how potential and kinetic energy of the waves, in the direction of their movement, as well as an independent force transmission rods on a common shaft with the flywheel.

However, this setting has a number of disadvantages. First, it is rigidly connected with the base fixed to the seabed, therefore, its performance strongly depends on the direction of wave movement. This is complicated by its installation in deep water. Secondly, the number of floats is clearly not enough for uniform extraction of energy from waves during their period, with more than a weak wave that comes after a strong not able to effectively influence the kinematic mounting system due to the lack of speed lift floats. Third, even satisfactory energy work flywheel is not able to maintain the rotational speed of the rotor separators AC to regulated limits. In-fourth the s, the design of floats does not guarantee their efficient work during strong sea, when in the coastal zone (shallow water) the leading edge of the wave rises steeply and even tipped. Fifthly, installation, designed for use in coastal zones, are not able to provide sufficiently intense damping of the waves to protect the shore from wave erosion.

The objective of the proposed wave power plant (WPP) is to eliminate the above disadvantages of the known analogues with minimum complexity of its construction.

This technical result is achieved by the fact that in the proposed design of the wave power plant, containing a system of floats, the kinematic system with freewheel clutches and flywheel connected to an electric generator, according to the invention, the system floats made in the form of a contour of the raft with dynamic anchor, while the floats are connected with dynamic anchor prestressed elastic links, kinematic system has a General multi-link drive shaft associated with each case float kinematic pair with growing from link to link in the direction from the engine compartment gear ratio and coupled rigidly or via a slipping clutch with the flywheel to the shaft directly or through the multiplier attached to habilitator speed, made in the form, for example, dynamic coupling, which is connected to the rotor of the generator.

Equipment system floats in the form of a contour of the raft dynamic anchor allows the use of the proposed wind farm at any depth and any direction of the waves.

Elastic connection in the form of, for example, pre-stressed tension springs connecting the floats with a slight dynamic anchor, eliminate the need to use the weight of the floats for their return to the lower position, the paired (as when lifting) with energy extraction, which makes it possible to facilitate them, thus reducing the undesirable inertial loads. This non-rigid dynamic link anchor with the anchor on the bottom of the sea provides the opportunity to raft to samoustraniajutsia in the optimal direction along the waves.

Use the kinematic system of the wind farm General multi-link drive shaft associated with each case float kinematic pair, for example, gear, increasing from link to link in the direction from the engine compartment ratio provides optimal energy extraction from waves of any amplitude on the way it passes under the raft with the attenuation caused by the selection of its energy.

Install flywheel before slipping clutch protects the kinematic elements with the system from beyond the dynamic loads when "abnormal" modes.

Connecting the generator through a power stabilizer speed (with little loss of energy in the stabilizer allows you to maintain the parameters of the electric current generator output within acceptable by current standards within, enabling parallel operation with other wind farm and the external network.

Figure 1 shows a General view of the wave power plant, figure 2 is a longitudinal section in the plane of symmetry of the raft, figure 3 - his section "b-B", figure 4 - cross section "a-a".

The power plant consists of a system of floats, the head 1 and section 2, as well as the engine compartment 3, corresponding hinge connections, the geometric axis which passes through the inflection point is installed along the longitudinal axis sectional floats 2 propeller shaft 4. Each float is kinematically connected with the section of the drive shaft installed in the adjacent float, for example, bevel gear, consisting of a pair of gear wheels 5 and gear 6 (or friction transfer), while the ratio for each section of the shaft increases in the direction from the engine compartment 3, and each wheel 5, freely mounted on its axis 7, is equipped with a freewheel 8 with the possibility of free rotation of the shaft 4 in one certain direction. At the end of the last section of the shaft 4 is installed clutch p is Dalnego point 9, associated with the main gear 10 gear of the flywheel 11, the shaft of which (either directly or via the multiplier) attached stabilizer speed in the form of, for example, well-known dynamic clutch (clutch slip) 12, which is connected to the rotor of the generator 13. Instead of the multiplier and the stabilizer can be installed in one of the known variants with automatic regulation of the speed of the driven shaft.

Section of the propeller shaft 4 are connected, for example, splined couplings 14.

Junction floats between themselves and with the engine compartment 3 geometrically closed elastic inserts 15 and the ends of the housings are equipped with buffers 16, in the fore part of the head float 1 has a massive bumper 17. The side walls of floats reinforced vertical plates 18, the lugs which, by means of elastic connections 19 are connected with the dynamic anchor 20, adjustably connected with the lever arm. From the engine compartment 3 to the anchor and then to connect the installed electrical cable 21.

WES is also equipped with known bearings nodes, sealing devices, bandages, and - if necessary - known system printablepage raft in extreme storm conditions.

Wave power plant works. In the absence of agitation of sediment floats 1 and 2 minimum because of the extremely the red mass and the associated dynamic anchor 20. By virtue of this provision the lifting force of the float is the maximum. The initial effort of elastic links 19 is determined not dynamic weighing anchor 20, and their pre-strained in a known manner by the state, ensuring total effort equal to half of the lifting force of the float (with a uniform distribution between all connections).

The presence of waves time floats on the crest of a lot less than in a hollow, so the dynamic anchor 20 samoustranyaetsya at the level corresponding to the presence of floats near the middle mark depressions, providing the maximum amplitude of the floats 1 and 2. Owing to its extremely low weight the last lift force of the waves, due to their potential, and partly kinetic energy, and oppositely directed force of the elastic links 19 with the maximum achievable efficiency is transmitted to the shaft 4 at the lowest cost to overcome the inertial forces associated with alternating motion (linear and angular) pivotally connected elements of the raft.

Transfer adopted from wave energy by the electric generator is performed by changing the mutual position of each pair pivotally connected elements of the raft: the rotation of one element relative to another in any direction causes the rotation of the corresponding wheel 5, mounted the and axis 7, rigidly associated with the "drive" float, with the passing of time on the mating gear 6, while the second wheel is in mesh with this gear, freewheel 8 is released from the kinematic connection with a "driver" float and rotates idle.

Its final drive ratio in kinematic pairs is not the same: it decreases from link to link in the direction of the wave from the bow of the raft to his "stern", respectively, at any given moment during operation of the power plant is reduced and the instantaneous angular speed of the drive wheels as the driven shaft they have in common. Therefore, the wave almost any amplitude begins his "work" with the float, the speed of rotation of which is relatively nearby will be more angular speed of the corresponding wheel 5 immediately before the passage of this wave under the float.

Swivel the last pair of elements of the raft, consisting of a section of the float 2 and the engine compartment 3, selects the portion of the residual energy of the wave, although the latter does not change its orientation relative to the horizon, held gyroscopic forces of a rotating flywheel 11, the vertical oscillations are also negligible (since the mass is large, and the wave is attenuated), which reduces the mechanical load on the cable 21.

When the shot is on a raft dangerous (steep) waves or heavy floating object on the bumper 17 of the head float 1 mounted on a shaft 4 the slipping clutch 9 will protect the shaft 4 with couplings 14, the main transmission 10 and other elements of the kinematics from the beyond and shock loads. In normal mode the weight of the bumper 17 provides sufficient torque for operation of the float on the rear slope of the waves.

Maximum angle of bend in the hinge connection of the pair of floats is limited to buffers 16.

The necessary supply of energy accumulated in the flywheel 11, need not so much to equalize the rotational speed of the shaft as to cover short-term lack of energy associated with excess real time intervals between the arrival of a sufficiently powerful waves. Although the length of the raft is made approximately equal to the highest estimated length γ waves specific to the installation site of the wind farm, it is always probable violation of their rhythm associated with their interference, and other random processes. The optimal mode selection power generator 13 is through dynamic coupling 12 or other known devices with automatic maintaining speed and high efficiency.

Elastic inserts 15 are isolated elements of kinematics, located between the floats, from the external environment, increase the buoyancy and improve the flow of the raft.

The side plate 18 prevents transverse movement of the water under the raft, which increases the efficiency of selection ene the GII, as well as positively affect the process of spontaneous installation of the raft in the direction of travel of the waves.

The considered wind farm is able to reduce electricity as stationary users (on shore or offshore fishing platforms)and mobile (marine Geology, craft production and processing of seafood and other). System coastal wind farm will reliably protect the beach and in the surf zone facilities from destruction by the waves, while at the same time, necessary for the ecosystem of shallow water small waves.

Wave power plant, containing a system of floats, the kinematic system with freewheel clutches and flywheel connected to a generator, characterized in that the system of floats made in the form of a contour of the raft with dynamic anchor, while the floats are connected with dynamic anchor prestressed elastic links, kinematic system has a General multi-link drive shaft associated with each case float kinematic pair with growing from link to link in the direction from the engine compartment gear ratio and coupled rigidly or via a slipping clutch with the flywheel to the shaft directly or through a multiplier attached stabilizer speed, made in the form, e.g. the, dynamic coupling, which is connected to the rotor of the generator.



 

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