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INVENTION
Russian Federation Patent RU2182256

Surf POWER PLANT

Surf POWER PLANT

Name of the inventor: White DM
The name of the patentee: Ulyanovsk State Technical University
Address for correspondence: 432027, Ulyanovsk, st. Venice of the North, 32, Ulstu Vice President for R & D
Starting date of the patent: 2000.09.29

The invention is intended for use in hydropower, in particular in the surf power plants. Installation comprises two pairs installed at the bottom of supports fastened to them rotatably horizontal PTO shaft is kinematically connected to an electric generator, but also positioned under the shaft at the surface flat float attached lower central part by a flexible element to the bottom, at the top center the float is set upright post, the upper free end of which is in the form of U-shaped fork freely covering the PTO shaft, wherein the inner surface of the U-shaped fork with a layer of rubber, and the cylindrical surface of the steel shaft at the contact it with a plug made knurling . The design ensures continuous operation of the plant with periodic change of direction surf waves.

DESCRIPTION OF THE INVENTION

The invention relates to a hydroelectric and can be used in particular in power plants surf.

Known designs surf motors comprising radial rods and are fixed to the blade or the blades are made reclining / cm. Shchapov NM hydro turbine equipment. M - L .: SEI, 1955, p. 225 / or blades mounted fixedly on the rods, are wedge-shaped and provided with its base side grooves / cm. AS USSR 1105683, cl. F 03 B 13/12, 1984 /.

However, these constructions are characterized by considerable complexity, large size and limited scope.

Is known and the wave power plant comprising a partially liquid-filled buoyant body disposed therein a float flat central part and the edges of which flexible elements are connected respectively with the bottom and top of the housing, and a PTO electric / cm. AS USSR 1260557, cl. F 03 B 13/12, 1986 /.

The disadvantages of the known device is the complexity of the design, a relatively low efficiency, extremely limited scope, and most importantly - the instability of the transmission torque of the float on the PTO shaft through the flexible elements with non-stationary wave perturbations.

The closest device of the same purpose to the claimed invention, a set of attributes is a wave power plant, comprising a support arranged thereon generator and connected to the latter shaft with cantilever mounted on it and biased relative to each other in the circumferential floats direction, the centers of symmetry are located in the same perpendicular to the plane of the shaft / cm. AS USSR 1208298, cl. F 03 B 13/14, 1986 / and adopted as the prototype.

The obstacles to achieve the said below technical result, when using the known device, taken as a prototype, are considerable complexity and size of the device, that it can not be used in case of a periodic change of direction of waves movement, typical surf power plants, it has a limited field of application of the known device.

The essence of the invention is to provide a structure surf power plant, providing intensive continuous rotation of the PTO power generator at periodic change in the direction of the surf / reel - a pullback / due to the formation in the different periods of disturbances acting on the shaft unidirectional traction force moments of friction.

The technical result - simplification of the design, reducing the size and expansion of the functional capabilities of the device.

Said technical result in the implementation of the invention is achieved by the fact that in the known surf power plant, comprising two pairs installed at the bottom of supports fastened to them rotatably horizontal PTO shaft is kinematically connected to an electric generator, but also positioned under the shaft at the surface flat float attached lower central part by a flexible element to the bottom, the feature is that at the top center of the float mounted vertical column, the upper free end of which is in the form of U-shaped fork freely covering the PTO shaft, wherein the mutually contacting surfaces of the shaft and plugs are made of materials with a high coefficient of sliding friction against each other.

Surf POWER PLANT Surf POWER PLANT Surf POWER PLANT
Surf POWER PLANT

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 schematically shows a power plant surf, general view; Figure 2 - view from the left in Figure 1; Figure 3 - section along A - A in Figure 1 at the reel surf / by sea /; FIG. 4 - And by section - A in Figure 1 with the rollback of the surf side / shore /.

The device comprises two pairs mounted on the bottom 1 near shore two supports 3, oriented in each pair at an angle to each other, mounted on bearings 3 rotatably horizontal PTO shaft 4 is kinematically coupled via toothed wheels 5 with a generator 6, and a fixed 3 on supports positioned under the shaft 4 and mounted on the flat surface of the water float 7, a central part of the bottom attached by a flexible member 8 / rope / sink 1. Thus at the top center of the float 7 is vertical strut 9 of rectangular cross-section, the upper the free end of which is shaped as U-shaped forks embracing freely PTO shaft 4, and the mutually contacting surfaces of the shaft 4 and the plugs are made of materials with a high coefficient of sliding friction against each other. In case the inner surface of U-shaped forks with a layer 10 of rubber, and the cylindrical surface of the steel shaft 4 at the point of contact with the plug 10 is specific knurling 11, which increases the coefficient of friction of steel on rubber to a value of friction materials iron-rubber equal to 0.7 e 0.8.

Operation is carried out as follows:

When you surf reel / from the sea to the shore / float 7 / cm. 3 / with the rack 9 moves toward the coast 2. At the same time the water level near the shore and the float rises 2 7 with rack 9 moves upward. The internal surface of the U-shaped fork 10 at its left part 3 is pressed against the shaft 4 and the rack 9 simultaneously moves upwardly, whereby due to torque forces occurring sliding friction shaft 4 is rotated clockwise. When you roll back the surf / from the shore to the sea / (see FIG. 4) 7 float moves down and to the left, U-shaped fork 10 is pressed against the shaft 4 of its right-hand side, and by the movement of the rack 9 with a float down the shaft 4 is imposed rotation again clockwise. As a result, periodic inking - roll back the tide is intense unidirectional continuous rotation of the shaft 4 PTO, which drives the generator 6.

Clearly, the proposed construction is extremely simple, compact, provides significant efficiency and stability surf energy conversion into electric energy, has wide functionality. Its operation is virtually independent of the existence of various extraneous disturbances, the presence or absence of wind, rough sea. The design is almost not critical to manufacturing errors, assembly, ie does not lose efficiency when bending and distortions of the float, the deviation from vertical racks with a fork, and the like.

CLAIM

Surf power plant, comprising two pairs installed at the bottom of supports fastened to them rotatable horizontal shaft PTO kinematically connected to an electric generator, and a float, wherein the float is flat and is situated under the shaft at the water surface, while its lower the central part of the float with a flexible element attached to the bottom and at its top central part mounted vertical column, the upper free end of which is in the form of U-shaped fork freely covering the PTO shaft, wherein the inner surface of the U-shaped forks attached rubber layer and on the cylindrical surface of the steel shaft at the point of contact with the knurl is made fork.

print version
Publication date 02.04.2007gg