RU2002981C1 - Method of generating twisted flows - Google Patents

Abstract

Usage: wind power to form swirling flows. SUMMARY OF THE INVENTION: a method for forming swirling streams is implemented in a device comprising a casing, slots, curved guides, a merging area of 1 sludge.

Description

The invention relates to wind energy and can be used to form swirling flows of gaseous and liquid media in order to convert wind energy into other forms of energy.

A known method is to form several jets of a continuous medium in opposite radial directions with their subsequent merging by their direction along the paths described by the relations

7 s

1 1G rf

fJL (r

RS

where n, Zi, and (fi are the radial, longitudinal, and azimuthal coordinates of an arbitrary point on the trajectory of the first particle of the stream of a continuous medium;

RO and R are the distances along the radially opposite directions to the point of their intersection from the point of start of swirling particles of a continuous medium and from the point of end twist of particles of a continuous medium, respectively;

C is a constant value;

Vfl and VT are the components of the constituent velocities of the particles of the continuous medium formed by the flow at a radius R;

 - the azimuthal coordinate of the particles of a continuous medium at the time it begins. twisting.

Closest to the proposed method is the method of forming several jets of a continuous medium in opposite radial directions with their opposite merging.

The disadvantage of this method is the relatively large energy losses during the formation of swirling flows, due to the non-optimal path of the particles along the material guides and the neglect of the final viscosity of continuous media. Therefore, for environments such as air and water, the implementation of the method in real devices leads to large energy losses and, accordingly, low efficiency of the devices. The lack of recommendations on optimal jet fusion and on the length of the path along the paths leads to the same result.

The required technical result is to reduce energy losses for the formation and maintenance of swirling flows.

The required technical result is achieved in that in the method, which consists in the formation of jets of a continuous medium in the radial direction, followed by

their fusion in the region of fusion by the direction of the particles of these jets along predetermined paths, the radial coordinate of an arbitrary point on the path of the 1st particle is changed directly proportional to its azimuthal coordinate, the azimuthal coordinate is changed according to the law of the second order curve, the formation of continuous media jets they are produced at the base of the fusion region at a distance from the longitudinal axis equal to its height, and the fusion of the jets is performed by uniformly distributing the ends of the jets along the lateral boundaries of the fusion region.

In addition, the required technical result is achieved by that. that the radial coordinate of an arbitrary point on the trajectory of the 1st particle is changed linearly with respect to the azimuthal coordinate, and the azimuthal coordinate is changed according to the law

k (x2-2x), where k is a coefficient proportional to the speed of the continuous medium at the base of the confluence region. The value of the coefficient k depends on a large number of factors; it is selected experimentally and, in a particular case, k 1.

The drawing shows the design of a device that implements the proposed method.

The device comprises a hollow tapering casing 1 of height H, in the lower base with a radius RO of which slots 2 are made, to which curvilinear guides 3 are attached, the ends of which are directed along a cylinder of radius R (R R0).

equal to the radius of the upper cross section of the casing 1. The ends of the guides 3 are evenly distributed along the boundaries of the cylinder shaped region A of the merging. In this case, the curved guides 3 have the form

repeating in the projection onto the base of region 3 the Archimedes spiral is merged, and in the projection in the plane perpendicular to it, a second-order curve. .

The method steps are implemented as follows.

Gas, liquid or a multicomponent mixture (hereinafter referred to as the working medium) under the influence of excessive pressure enters through the slots 2 into curved guides 3, at the beginning of which radial jets of the working medium are formed. Particles of these jets, moving further along curved guides 3, acquire speeds and directions of motion in accordance with

by the above ratios, and merging, form an emery flow.

Due to the fact that the fusion of the jets is carried out with a uniform distribution of their ends along the boundaries of the merging region, experimental studies have shown that optimal conditions for the interaction of the jets during the formation of a swirling flow are provided. This leads to a decrease in energy loss and its increase in a swirling flow.

In addition, when the jets move along trajectories that have a projection in the shape of an Archimedes spiral, and a change in height in the direction of development of the swirl flow also in accordance with the results of experimental studies, the best conditions are provided for transferring the energy of a continuous medium into a swirl flow. Moreover, the higher the external pressure

(velocity of the environment), the steeper the movement of the jets along the longitudinal component. When the jets move in the guides that ensure their convolution into a swirling flow, on the one hand, conditions are formed for the best transfer of the energy of the continuous medium to the energy of the swirling flow, but, on the other hand, the energy of the continuous medium in the guides is lost. It has been experimentally established that, at the start of the formation of jets at distances from the axis equal to the height of the confluence region, the optimal duration of the jets along the guides is provided, at which the maximum energy transfer of the continuous medium to the swirl flow energy is ensured.

(56) U.S. Patent NJ 400/596, cl. F 23 D 13 / 12.1977.

Claims (1)

The claims In accordance with its azimuthal coordinate, the azimuthal coordinate is changed by the PRIVACY FLOWS, which consists of 25 according to the law of the second-order curve, the formation of continuous-medium jets into the formation of continuous-medium jets with their subsequent direction at the base of the region of fusion, neither by fusion in the region of fusion nor by the direction from the longitudinal axis equal to its laziness of the particles of these jets along the given trajectory, and the fusion of the jets is performed by ectors, characterized in that 30 distributions of the ends, the radial coordinate of arbitrary points along the lateral boundaries of the slick region — the paths of the ith particle change the straight lines.