UA27993U - Converter of stream energy - Google Patents

Abstract

A converter of stream energy in which at both sides of current-conductive membrane, symmetrically with gap that forms cavity of membrane, perforated current-conductive plates are placed, those are covered at the side of membrane with polarized electret material with different polarization, and at back side resonance cavities are placed, with adjustment plungers, those are connected through perforation to cavity of membrane and connected to control inputs of flow switch; outputs of membrane cavity are connected by flow to ejector, at that current-conductive plates are connected to connected in sequence diodes of rectifier and to direct current electric load, and to point of connection of diodes current-conductive membrane is connected.

Description

Description of the invention

The intended useful model refers to wind energy and can be used to obtain 2 electricity in the immediate vicinity of low-power consumers.

Technological progress forces more and more attention to be paid to renewable, environmentally friendly energy sources such as the energy of wind and water flows. The large geography of distribution of these streams allows creating autonomous and mobile sources of electricity that have a number of significant advantages. Energy converters of low-speed, more probable and more widespread flows are of special interest. However, the energy of 70 low-speed flows is small (proportional to the cube of the speed) (LI). Therefore, in order to obtain a sufficient amount of energy, an appropriate number of simultaneously working converters is required. And this, in turn, requires the creation of extremely simple, cheap, compact and reliable converters.

A special class of flow energy converters is represented by vibration converters |classes MPK" ЕЕ 03 0 5/00, 5/06; Н 02 К 35/00). Such converters differ in a number of positive properties, namely: t - Practical lack of starting moment, which allows them work in low-speed flows, simply amplifying the natural resonant oscillations of the transducers; - The natural resonant frequency of the working elements of the vibration transducers is due to their mass and elasticity, is equivalent to the speed of rotation of the rotors of rotary wind turbines and can be large at low flow speeds, and the amplitude of oscillations can be increased due to positive feedback of connections, which is equivalent to an increase in power; - High reliability (absence of friction parts, small modularity, technically simple redundancy); - Minimal prevention and maintenance regulations, which allows installing units in hard-to-reach places; - Low operating costs; 29 - The possibility of creating small- block structures, which facilitates installation, repair, creation of structures - the necessary power with its increase during operation; - The autonomy of the modules, which allows for a decentralized composition of the converter with blocks located in places of concentration of flows.

Known vibratory converters of flow energy, such as wind flows, have a low conversion factor, high cost, complexity, and insufficient reliability. All this complicates their replication in (o) production and mass application. For example, "Azroelastic electric generator" S.S. Nefedova by a. with. USSR

Mo. 1160094 according to cl. There is 03 0 5/06 of 1985, "Wind turbine" (a.s. KhvIZO5850, USSR. O.V. Didykyna and V.A. F

Hryshcheniko, Russian patent No. 2244850 for the same class of IPC. uh-

These devices contain elastic elements, interact with a flow of supercritical speed, which creates turbulence and only supports the oscillations of the elastic elements' own mechanical resonance. Oscillations of these cm current-conducting elements located in a magnetic field create ZRO and current in the electronic load.

This flow interaction process is inefficient and cannot work in low-speed flows. This makes their mass implementation problematic. « du The closest prototype to the proposed device is the patent of Ukraine for the utility model Mo21786 from 04/10/2007 "Converter of flow kinetic energy into electrical energy". c This device in terms of simplicity, manufacturability and cost-effectiveness meets the requirements of mass implementation, but "c" has a number of disadvantages, such as the need to use two sources of direct current to excite the conversion process, which increases the cost, the large influence of the attached mass of the oscillating element, which reduces its frequency own resonance, thereby worsening its operating characteristics. cue 15 The proposed device consists of a confusor connected by a flow to the input of a current multivibrator

IL), which has two control inputs and an output, divided in half by a pointed partition, to the back side of which a conductive membrane is attached, and on both sides of it, symmetrically with the gap that forms a cavity from the conductive membrane, there are perforated conductive plates covered with side of the membrane with differently polarized electret material |LZI|, and on its reverse side there are resonant (Ce) 50 cavities that connect through the perforation of the conductive plates with the cavity of the membrane. Resonant so cavities, which are connected to the control inputs of the current multivibrator, have adjustment plungers.

The exits of the cavity of the conductive membrane are connected by flow to the ejector, and the conductive plates are connected to the series-connected diodes of the two-and-a-half-cycle rectifier and to the direct current electronic load, and the conductive membrane is connected to the point of connection of the diodes. 59 The proposed device is illustrated in Fig., which shows: c 1. Confuser; 2. Current multivibrator;

C. A pointed septum; 4. membrane (conductive); bo 5. Feedback perforation; 6. Resonators; 7. Control inputs of the flow switch; 8. Resonator adjustment plungers; 9. Electret differently polarized material on perforated plates (conductive); bo 10. Collector perforation;

11. Collector; 12. Ejector.

Operation of the device.

The incoming air stream, being concentrated and accelerated by the confusor (1), enters the inlet of the current multivibrator (2) and, dividing on the pointed partition (3), enters the cavity of the membrane (4). The separation of the flow at the pointed partition cannot occur in the same way. Suppose most of the flow got into the right part of the cavity (shown by a solid arrow in Fig.). Part of this flow through the perforation (5) enters the resonator (6) and, through the control input of the current multivibrator (7), deflects the incoming flow into the left /o part of the membrane cavity (dotted arrows). The process is periodically repeated, transmitting to the membrane oscillations that occur with the membrane's own resonance frequency, which is adjusted (by plungers (8)) of the resonators to the membrane frequency.

Alternate approach to different polar electrets causes shear currents |L4A) in the plates and membrane, which are sent to the electron load (Kn) through the MO1 and MO2 diodes.

Spent flows from the membrane cavity enter the ejector through the perforation, giving the flow additional acceleration.

The presence of air outflow from the membrane cavity through the perforation reduces the attached mass. The mass of air from the membrane cavity is simultaneously used for positive feedback, which supports oscillations.

Instead of two current sources, an electret is used, which is a cheap polarized dielectric.

Thus, the tasks set before this development have been implemented.

References: 1. Shefert Ya.I. "Using wind energy". M. Gosatomizdat. 1983. 2. I.M. Emelykh, Yu.Y. Sydorkin. "Jet automation (pneumonics)". Lenizdat, 1972

Z. Borodulin V.N. etc., "Construction electrotechnical materials!" M. Vyssh. School. 1990. 4. Kuhling H. Handbook of physics. 1983. 5. Kazakevich M. I. "Azrodynamics of bridges". M. Transport. 1987, vol. 6. Ultrasound. "Little encyclopedia." Publishing house "Sov. zcyclopedia" 1979

Claims (1)

The formula of the invention and. 30 (at) A flow energy converter consisting of a baffle connected by flow to the input of a jet o multivibrator, having two control inputs and an output, divided in half by a pointed partition, to the back of which a conductive membrane is attached; rectifier, electronic load and ejector, o 35, which is distinguished by the fact that on both sides of the conductive membrane, symmetrically with the gap that forms the cavity of the membrane, there are perforated conductive plates, covered on the side of the membrane with differently polarized electret material, and on their reverse side there are resonant cavities with connecting plungers through the perforation with the cavity of the membrane and connected to the control inputs of the flow switch; the exits of the membrane cavity are connected by flow to the ejector, and the current-conducting " the plates are connected to the series-connected diodes of the rectifier and to the direct current electronic load, and from c to the point of connection of the diodes, a conductive membrane is connected. . and? ime) -and se) se) syu" 60 b5