Method of flowing medium energy utilisation and device for method implementation

FIELD: power industry.

SUBSTANCE: method of flowing medium energy utilisation involves guiding a fluid medium flow to diffuser 11 where the flow is accelerated and then fed to duct 3 where it is additionally accelerated due to gradual duct 3 cross-section reduction, further conversion of kinetic flow energy into mechanical power by guiding the flow to at least one work wheel 5 with blades 6, installed in the duct 3, and further deceleration of the flow. Blades 6 of the work wheel 5 are tapered in width from inlet towards the outlet edge, side surface of the blades is convex, and outlet edge is shifted against inlet edge.

EFFECT: increased flowing medium energy utilisation rate.

7 cl, 3 dwg

 

The invention relates to the field of low energy, namely, the means to convert the energy of flowing water into electrical energy, and can be used for installation in the river.

The famous "VORTEX FLOW TURBINE FOR ENERGY in the CURRENTS of RIVERS AND TIDES" in patent RU 2359149 C1, 20.06.2009, F03B13/26 consisting of a hollow bearing shaft-cylinder with adjustable ballast, allowing the turbine to be immersed in water or come out of it on the surface, on which is placed the blade-semi-cylinders, the ends of which are attached circular tanks with ballast, providing neutral buoyancy of the turbine, characterized in that the bearing shaft is a cylinder set evenly along its length one or more disks or flat cylinder with grooves on the rim, in which are mounted the blades, with the appearance of a side surface of a hollow cylinder cut out of the longitudinal plane, so that the disks were entered into the inner ends of the blades, forming a free Central space between the disk bearing surface of the shaft is a cylinder and the ends of the blades, and their outer ends are constricted narrow rings, hoops, formed a multi-cylinder is fully closed tanks with ballast, providing neutral buoyancy of the turbine is rigidly connected to the ends with blades and hollow bearing shaft-cylinder. The flow passing along the S-shaped blade with a counter and back sides of the turbine, creates a bending torque.

The famous "Engine for disposal current environment" in patent RU 109348 U1, 10.10.2011, F03B 13/10. Described in the prototype, the technical solution consists of a submersible housing mounted on the base on the bottom of the river, is rigidly associated surface area, on which is placed the chain drive from the wheels to the generator. In the underwater part of the hull has two working wheels, and the direction of the blades is mirroring. When the flow of water through the impeller creates a torque on both wheels, directed oppositely to each other, and accordingly the wheel of the turbine begins to rotate oppositely to each other. The rotation of the wheels is transmitted with a chain of two PTO, which is kinematically connected to a generator.

The flow of flowing medium, for example water, acts on the blades of turbocodes. In the result of turbocodes start to rotate on the shaft in different directions. Rotational movement of turbocodes is transmitted to the PTO shafts, which are connected through gears, so turbocodes be kinematically tightly coupled. In the result of turbocodes rotate synchronously and oppositely. Under the influence of flow on the outer plane of the blades of turbocodes creates high blood pressure, and on the opposite side of the blade negative pressure. Thus, between adjacent blades of turbocodes formed two zones, one with high and one with low blood pressure, and these areas are moving towards each other. When a certain distance between the blades, at a meeting of the zones of high and low pressure, moving the counter, vortices are formed, accelerating the traffic flow. As a result, the flow velocity at the exit of the pair of blades is increased, and because turbocodes rotate synchronously, the mechanism operates in an orderly fashion, increasing the engine power, which through a suitable transmission arrives at the shaft and then to the generator.

The closest in technical essence are described in the patent DE 2010018806 A1, 03.11.2011, EV 9/00 way of utilization of the energy of the current environment, characterized in that the fluid flow is directed into the channel, where speed by gradually reducing the cross-sectional area of the channel, then convert the kinetic energy of the flow into mechanical power by the flow on the impeller with blades, then the flow slows down, and a device for utilization of the energy of the current environment, characterized in that it contains open on two ends of the tapering channel in which is located an impeller with vanes, p and that the outlet channel is equipped with an expanding nozzle.

All existing solutions utilize only the kinetic energy of the flow, which is less than 1 kW with an area of 1 m2section of the river when the flow velocity V=1 m/s Existing designs of blades blade machines used to recycle energy of the fluid flow, as well as the construction of the generators is unable to provide effective screening of potential energy of the flow. In addition, to date, unknown ways, related to the application for the selection of energy flow vane machines, which use blades with a curved cross-sectional profile.

The objective of the proposed technical solution is the increase of the coefficient of utilization of the energy of the current environment.

The task solved by way of utilization of the energy of the current environment, characterized in that the fluid flow is directed into the diffuser, which increases its speed, then served inside of the channel, where additional speed by gradually reducing the cross-sectional area of the channel, then convert the kinetic energy of the flow into mechanical power by the flow on at least one impeller with blades that feature in the channel, then the flow slows down, while the impeller blades perform tapering in width from the input up to you which one edge, the upper side surface perform is convex, and the output edge shift relative to input; the flow is slow due to a sharp increase in the cross section of the channel and implements the method of dam for energy recovery current environment, characterized in that it contains open on two ends of the tapering channel, in which there is at least one impeller with blades; blades provided with input and output edges, and a convex side surface, and the blades are made tapering in thickness from the input to the output flange and the outlet flange offset from the inlet; the inlet channel is equipped with a diffuser, the outlet channel is equipped with an expanding nozzle; the impeller blades contain one concave side surface; the impeller blades contain one flat side surface; the channel is made conical blades provided with an open cavity located on the side surface opposite the convex surface.

The technical solution is illustrated by drawings, where Fig. 1 - a device for utilization of the energy of the current environment of Fig. 2 is a cross - sectional profile of the blade of Fig. 2 is a cross - sectional profile of the blade with hook cavity.

In Fig. 1 shows a device 1 for the scraps the emission energy of the current environment, thread 2, channel 3, blade machine 4, the impeller 5, the vanes 6, the input edge 7, the output flange 8, the convex side surface 9, opposite the side surface 10, the diffuser 11, a nozzle 12, the opening of the cavity 13, the zone 14 of the turbulence.

A device for utilization of the energy of the current environment is implemented as follows.

The device 1 for energy recovery current environment includes a housing, which houses open on two opposite ends of the channel 3. Channel 3 is made tapering from the inlet to the outlet, i.e. the cross-sectional area of the channel gradually decreases. Optional channel 3 is made conical. Channel 3 is the shoulder machine 4, containing at least one impeller 5, equipped with blades 6. Wheels 5 can be from one to four, depending on the flow velocity of 2, with the rotation of adjacent wheels 5 in opposite directions. The blades 6 are supplied to the input 7 and output 8 edges, and a convex essentially upper lateral surface 9. The profile of the blades 6 are curved so that the output edge 8 is displaced in the plane of the cross-section of the blade 6 in the direction from the convex side surface 9 relative to the input flange 7. Opposite convex 9 essentially lower side surface 10 is made either concave or flat, depending the t of the estimated flow velocity of 2. Optional blades 6 provided with an open hook in cross section cavity 13 located on the side surface 10 opposite the convex surface 9. Working wheels 5 mounted for transmitting rotation on a single associated with the generator shaft. The optional generator is installed in the immediate vicinity of the device. The inlet channel is equipped with a diffuser 11. The outlet of the channel is equipped with an expanding nozzle 12.

The method of utilization of the energy of the current environment is as follows.

Thread 2 the fluid is directed into the channel 3, which accelerate due to the gradually decreasing cross-sectional area of the channel 3. Then convert the kinetic energy of the flow into mechanical power by flow 2 on at least one impeller 5, containing the blades 6. The blades 6 are supplied to the input 7 and output 8 edges, and a convex essentially upper lateral surface 9. The profile of the blades 6 are curved so that the output edge 8 is displaced in the plane of the cross-section of the blade 6 in the direction from the convex side surface 9 relative to the input flange 7. Then thread 2 slow. Thread 2 optional slow due to a sharp increase in the cross section of the channel 3.

Device for energy recovery current environment roboticslab way.

Water flow with velocity V1served in the diffuser 11, where the water is pre-increases the speed of flow 2. Then thread 3 served inside channel 3 with a gradually decreasing cross-sectional area. Due to the narrowing of the channel 3, for example its taper, thread 2 advanced accelerated to operating speed V2and serves on the blades of the impeller 5. Stream, falling on the blades 6 of the impeller 5, gives the potential energy P1, which is formed by the difference in flow rates above and below the blade 6. The difference in the velocities of flow of 2 above and below the blade 6 is formed due to the presence in the blade 6 one convex side surface 9 and an opposing concave or flat side surface 10.

P1=CFqV2/2S,

CF- the lift coefficient, dimensionless quantity, is determined experimentally; q is the density in kg/m3; S - area of the blades m2; V - flow velocity m/sec.

The equation shows that the higher the flux density and the speed difference, the greater the lift force as the denominator constant.

Approximate calculation through the pressure difference excluding the area of the scapula and the other forces:

P1the pressure under the blade; P2- pressure on the blade; V1- speed flow under the blade; V2- SC is the rate of flow over the blade; q is the density in kg/m3.

When the flow velocity V=1 m/s V1- less than 0.5 m/s; V2- 1.3 m/sec,

P=845-125=720 kg/cm2,

7209,8=7kW.

Then the stream 2, due to the curved profile, as well as narrowing in thickness from input to output edges of the blades 6, changes direction at 45-90, thereby giving the kinetic energy of the Republic of Kazakhstan. At high flow velocity of 2 under the blade 6 is formed by a vacuum, which will give the impeller 5 in the opposite direction of rotation to eliminate vacuum on a flat or concave surface of the blade 10 install additional open hook cavity 13. In the case of open hook cavities 13 in the blades 6 the cavity 13 reduce the speed of the stream 2 and form a zone 14 of the turbulence.

The technical result of the proposed technical solution is to increase the utilization rate of energy current environment by way of recycling energy current environment, characterized in that the fluid flow is directed into the diffuser, which increases its speed, then served inside of the channel, where additional speed by gradually reducing the cross-sectional area of the channel, then convert the kinetic energy of the flow into mechanical power by the flow on at least one impeller with vanes to the e feature in the channel, then the flow slows down, while the impeller blades perform tapering in width from an input to an output edge, the upper side surface perform is convex, and the output edge shift relative to input; the flow is slow due to a sharp increase in the cross section of the channel and implements the method of dam for energy recovery current environment, characterized in that it contains open on two ends of the tapering channel, in which there is at least one impeller with blades; blades provided with input and output edges, and a convex lateral surface, this blade is made tapering in thickness from the input to the output flange and the outlet flange offset from the inlet; the inlet channel is equipped with a diffuser, the outlet channel is equipped with an expanding nozzle; the impeller blades contain one concave side surface; the impeller blades contain one flat side surface; the channel is made conical blades provided with an open cavity located on the side surface opposite the convex surface.

1. The method of utilization of the energy of the current environment, characterized in that the fluid flow is directed into the diffuser, which increases its speed, then the indicate inside of the channel, where additional speed by gradually reducing the cross-sectional area of the channel, then convert the kinetic energy of the flow into mechanical power by the flow on at least one impeller with blades that feature in the channel, then the flow slows down, while the impeller blades perform tapering in width from an input to an output edge, the upper side surface perform is convex, and the output edge shift with respect to the input.

2. The method of utilization of the energy of the current environment under item 1, characterized in that the flow is slow due to a sharp increase in the cross section of the channel.

3. The dam device for utilization of the energy of the current environment, characterized in that it contains open on two ends of the tapering channel, in which there is at least one impeller with blades; blades provided with input and output edges, and a convex side surface, and the blades are made tapering in thickness from the input to the output flange and the outlet flange offset from the inlet; the inlet channel is equipped with a diffuser, the outlet channel is equipped with an expanding nozzle.

4. The dam device for utilization of the energy of the current environment on p. 3, characterized in that the blades working what about the wheels contain one concave side surface.

5. The dam device for utilization of the energy of the current environment on p. 3, characterized in that the impeller blades contain one flat side surface.

6. The dam device for utilization of the energy of the current environment on p. 3, characterized in that the channel is made conical.

7. The dam device for utilization of the energy of the current environment on p. 3, characterized in that the vanes are provided with an open cavity located on the side surface opposite the convex surface.



 

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