SK7008Y1 - Energy conversion system of water currents - Google Patents

Abstract

The technical solution relates to the conversion of the energy of rivers. In technical solution is used method of a vibration of turbine shaft (8) and a reversible turbine (7), which are positioned in strips below river level and opened to a curve.

Description

Technical field

The technical solution concerns systems for the utilization of river and sea water streams.

BACKGROUND OF THE INVENTION

The systems currently in use for the kinetic energy utilization of water jets are composed of axial water turbines, either individually or multiply mounted on pillars with a base on the bottom. The foundations must be able to withstand high torque loads, or the turbines are not positioned in the optimum current. Low flow rates and high forces cause the need for a high speed to the generator.

Systems that use water pumps push water ashore into a hydroelectric power plant without the need to hermetize the electronic generators of each small unit.

A large cross-section of the water flow is utilized by the developed winged units with a high-speed turbine with a generator. The system requires a high quality shaft seal. Losses of efficiency by sealing and resistance of a rotating long anchor rope and electrical cable are a limiting factor.

The essence of the technical solution

The technical solution according to the invention reduces the disadvantages of the state of the art in that a plurality of turbines are positioned below the water surface at an optimum depth in the form of a wide arc and each of the turbines is attached in a common knot to a common rod and separated by profiles. Each turbine has tilting blades whose angle of adjustment automatically changes analogously when the relative axial flow rate of the water changes. The upstream turbines have a negative setting angle and the torque C against the buoyancy U on the blade profile is less reduced by the centrifugal force of the weights on the turbine rotor arms. The energy of twice the speed of the water is stored in the rotational energy of the turbine blades and is transmitted by the centrifugal force of the turbines with a higher angle of attack when drawn in parallel. The deceleration of the water flow is significant, and this is also reflected in the efficiency of kinetic energy conversion. With its asymmetrical pull, the drawbar rotates the mechanism for changing the linear reciprocating motion by connecting it to a chain link block on freewheels.

The mechanism of changing the linear reciprocating motion further comprises sprocket wheels on freewheels that rotate the shaft multiple times in the bearings in one direction and on which the inertia masses of the rotors of the output energy converters, such as an electric generator or a pump with an outlet pipe, are rotated. Less water resistance in the reciprocating movement of the turbines is achieved by the return members by their resilience or pull from the return turbines with a smaller sum surface, whose return cables pull the interconnecting reciprocating block of all chains.

The pressurized water supply of the central hydroelectric power plant allows the connection of the outlet pipes of numerous sub-systems to the main pipe. Each linear reciprocating mechanism is attached to the bottom of the river streams in a row downstream, the top of the system being tethered by a submersible buoy and a drawbar to the rear of the turbine rotors at a height adjusted by tension from the slope. The depth of immersion allows dive D for ships. In the sea, the height of the working position is adjusted by the submersible platform, the buoys and the length of the anchor ropes so that the turbines allow the ships to move but are as close to the surface as possible.

Reversing forces and changing the flow direction cause the turbine blades to tilt. For this reason, the system includes return bars on submersible buoys and return stop springs. The starting pulse can provide any force acting on the deflection from the equilibrium position, e.g. torque from the motor at the location of the electric generator or water flow to the pumps from the opposite side (from the outlet).

Reducing the need for inertia masses on the output power converter shaft (the mechanism of changing the linear reciprocating motion) allows reciprocal movement of two parallel placed systems to two independent freewheels. The two reciprocating oscillating rods are then guided obliquely on the pulleys and mutually splayed to each other or a different method of transmitting tractive force (laterally through the pivot levers, hydraulics, etc.) is applied.

Overview of the figures in the drawing

Figure 1 is a conventional view of a schematic of a partial sectional view of a shaft of the mechanism of changing the linear reciprocating motion and the angle adjustment axis of the turbine blades (A-A).

Figure 2 is a plan view of the system.

SK 7008 Υ1

Example

A river power plant for a site without the possibility of damming the river flow. The power plant is on the banks of the river, preferably the high water. The main pipe supplies pressurized water from the individual sub-systems whose turbines 8 cross the bottom of the river by one or two arches to a height without jeopardizing the D-boats. The spacing of the downstream systems is optimized so that the induction from friction of the water layers affects as much as possible water flow to exploit the potential and reduce the flow rate with an adverse effect on shipping. The turbines 7 and the turbines 8 are moved in an axial oscillating motion by the return of the water into the pipe 13 up to the elastic stops 4. The return pressure of the springs and the thrust of the shafts 10 on the turbines 8 cause oscillations in the flow. higher buoyancy forces (real lead angles). The system pulls the chains 14 on the freewheels into engagement and the pumps 12 push the water into the outlet ducts 13. The return turbines 7 at low resistance and negative blade inclination collect energy into the leaf inertia. At the end dead center of the drawbar 10 by tilting the anchoring ropes 9 and the buoys stop further movement, the buoyancy on the blades of the return turbines 7 increases and the assembly is reciprocated. The oscillations constantly rotate the shaft through the freewheel chains 14 and the pumps 12 push the water into the hydroelectric power plant at the center of the shore. Units like sub-systems are more powerful than just pairs of turbines on pillars because they collect the entire width of the river, making the pumps more efficient and do not need additional gear to speed. The degree of exploitation of the river's potential is increasing and specific costs are also decreasing due to the unnecessary dam. The price of 1 kWh at the output of the hydroelectric power plant may fall to € 0.02.

Claims (5)

PROTECTION REQUIREMENTS A water jet energy conversion system using submerged propellers at the point of thermal or wind water jets or in a river jet, characterized in that a plurality of turbines (8) are located below the water level and each of the turbines (8) is stranded ( 15) attached in a common knot to the drawbar (6) and separated from one another by profiles (16), each containing blades with automatic adjustment of the angle of inclination depending on the direction of axial movement and the drawbar (6) attached to the linear reversing mechanism movement (1) at the interconnection block (3). Water jet energy conversion system according to claim (1), characterized in that the mechanism for changing the linear reciprocating motion (1) consists of a chain (14), freewheel sprockets and output energy converters such as an electric generator (11) ) and a pump (12) with an outlet pipe (13), wherein the return members may be resilient elements or return cables (5) of the return turbines (7) attached at the location of the reciprocal block (2). Water jet energy conversion system according to the suggestions in points 1 and 2, characterized in that the pump (12) connects through each outlet system (13) each sub-system to a main line which is longitudinally directed in the flow direction and to each linear return mechanism. of the movement (1) is attached to the bottom, each system being below the water level of the ship (D), the main pipe opening into the central hydroelectric power plant. Water jet energy conversion system according to claims 1 and 2, characterized in that it comprises resilient stops (4) of each interconnection block (3) and reciprocal block (2) and a reversible drawbar (10) which interconnect the rear parts of the turbines (8) and turbines (7) with a submersible buoy attached to the bottom by a biased rope (9). A power conversion system according to claim 1, 2, 3, 4, characterized in that each mechanism for changing the linear reciprocating motion (1) is connected to a pair of said turbine (7) and turbine (8) systems located parallel to each other. Each and each assembly is connected to its respective chain (14) by a drawbar (6) via angular thrust and pitch spacing members by mechanics or hydraulics.