RU2357804C2 - Set geometry jet generator - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: invention refers to hydraulic egress systems and can be used in technology fields to generate random geometry fluid jets of great lateral area, particularly for fountain nozzles, including cooling systems and etc. The invention aims at various geometry jet generating ensured by required geometry jet generator comprising a body with a flow tank with its closed curve axis, and a fluid inlet manifold. External surface of the body around, above or under said axis or at least one its fragments contains slots extended over 50 mm or more, ensuring fluid flowing and represented with a various flat films with jet generation.

EFFECT: possibility to integrate flat fluid films, varying jet geometry without changing escape geometry, hollow and continuous jet generation.

18 cl, 5 dwg

Description

Technical field

The invention relates to hydraulic devices for fluid outflow and can be used in industries where it is required to obtain liquid jets of arbitrary geometry, with a large area of the side surface, in particular in fountain nozzles, including cooling systems, etc.

State of the art

Known devices for the formation of jets of various configurations, for example, according to patents 2268092, 1072911, 712131, US 2002/0130196.

Also known are the designs of ring fountain nozzles for creating hollow jets of water, providing the formation of a single jet of water (see the book "Fountains. Description, design, calculation." P. Spyshnov. State Publishing House of Architecture and Urban Planning. Moscow, 1950).

The disadvantage of such devices is the inability to create a stable annular jet of arbitrary diameter. Typically, to create an annular jet of large diameter, a set of individual nozzles arranged around the circumference is used, however, this does not ensure the continuity of the outer and inner surfaces of the annular jet.

SUMMARY OF THE INVENTION

The problem solved by the present invention is the creation of liquid jets of various geometries, consisting of a combination of flat liquid films.

The technical result achieved through the implementation of the invention is as follows:

1) providing the ability to combine flat liquid films;

2) providing the ability to change the geometry of the jet without changing the geometry of the exhaust device, i.e. without the use of movable mechanisms in such a device, such a result is achieved for the first time;

3) providing the ability to create hollow jets, including vertical and horizontal, with an arbitrary ratio of the diameter of the jet and the diameter of the cavity;

4) providing the ability to create solid jets.

The problem is solved due to the fact that the device for creating a jet of the desired geometry contains a body with an internal reservoir designed for fluid movement, the axis of which is a closed curve, as well as a fluid supply pipe into it, while on the outer surface of such a body around, above or under the aforementioned axis or at least one of its fragments with a length of more than 50 mm (for example, 100 mm), there are slots made with the possibility of outflow of fluid flows from them in the form of a combination of flat ok with the formation of a jet, the cross-sectional area of which near the mentioned surface satisfies the condition:

where S _w is the cross-sectional area of the fluid flows in the stream,

S _c - the area of the figure bounded by a contour covering the gap,

why such cracks have a width of more than 0.5, and a length of more than 5 mm.

In this case, the axis of the tank, taking into account manufacturing errors, can be an ellipse, a polygon, or consist of parts of these curves. Moreover, it may be flat, or may not be so.

So, for example, the axis of the tank may be a circle.

The slots of the fluid flow can be located on the end, for example, the upper or lower surface of the body.

At least some tank cross-sections may not be circular.

The fluid supply pipe may be located on a lateral, for example, outer, surface of the body.

The nozzle can be located in such a way that its axis will be directed at an angle close to 90 ° to the contour covering the slots of the outflow, at the intersection of this axis and the contour. Also, this angle can be close to 180 °.

It is possible to arrange the nozzle in such a way that its axis will be directed at an angle close to 180 ° to the side inner wall of the reservoir, from the side of which this nozzle enters the reservoir.

The device may include additional nozzles, arranged in such a way that the axis of each of them is directed at an angle close to 90 ° or 180 °, to the circuit covering the slots of the fluid flow, at the intersection of this axis and the circuit or to the side inner wall of the tank the sides of which such a pipe enters the tank.

The nozzles can be differently oriented relative to the side inner wall of the tank, from the side of which they enter the tank.

Each of the slots of the fluid outlet can be located in such a way that the angle between the vertical projections of this slit and the axis of the tank at the point of their intersection lies in the range from 3 ° to 80 °.

The sum of the lengths of the slots may be greater than the length of the axis of the tank or its fragment, around, above or below which these slots are located.

The pipe may be located in such a way that its axis will be directed at a sharp or obtuse, counting clockwise, the angle to the gap nearest to it.

Neighboring, similarly oriented relative to the axis, or wall, or the nearest slots, the nozzles can be located at angles of 360 ° / n, where n is the total number of such nozzles.

List of drawings

Figure 1 shows a General view of the device.

Figure 2 is a view along arrow A in figure 1.

Figure 3 is a section bB in figure 1.

Figure 4 - the shape of the jet with a radial water supply.

Figure 5 - the shape of the jet with a tangential supply of water along the slots of the outflow.

The following notation is used in the figures:

1 - water conduit;

2 - nozzles for radial water supply;

3 and 4 - nozzles for tangential water supply;

5 - slots expiration;

6 - contour covering the slots of the expiration;

7 - the internal cavity of the conduit;

8 - the inner wall of the conduit;

N is the height of the water films with a radial water supply;

H ₁ - the height of the water films with a tangential supply of water;

α ₁ - camber angle of water films with a radial water supply;

α ₂ - the angle of the collapse of the water films with a tangential supply of water.

Information confirming the possibility of implementing the invention

In the application materials everywhere the following is accepted:

The axis of the tank is a line passing through the centers of gravity of its cross sections.

End surface - a surface, any three points of which lie in a plane, mainly making an angle of 180 ° with the axis of the tank.

Lateral surface - a surface, any three points of which lie in a plane, mainly making an angle of 90 ° with the axis of the tank.

Near - at a distance of not more than 1-2 jet diameters.

An angle close to a certain value falls within a tolerance of ± 20 ° from this value.

A device for creating a jet of the desired geometry contains a body with an internal reservoir designed for fluid movement, the axis of which is a closed curve, and also a fluid supply pipe, while on the outer surface of such a body around, above or below said axis or at least one of its fragments with a length of more than 50 mm (for example, 100 mm), there are slots made with the possibility of outflow of fluid flows from them in the form of a combination of flat films with the formation of a jet, the transverse area with cheniya vicinity of said surface which satisfies the condition (1), for which such slits have a width of more than 0.5, and the length - 5 mm.

In various embodiments, the axis of the tank, taking into account manufacturing errors, is an ellipse or a polygon or consists of parts of these curves. In the latter case, it may or may not be flat.

It is possible such a device that the axis of the tank is a circle.

The slots of the fluid flow are located on the end, for example, the upper or lower surface of the body.

At least some tank cross-sections are not circular.

The fluid supply pipe is located on the lateral, for example, external, surface of the body.

The nozzle is positioned so that its axis is directed at an angle close to 90 ° to the contour covering the slots of the outflow at the intersection of this axis and the contour. In another embodiment, this angle is close to 180 °. In these cases, we can speak of a radial or tangential fluid supply, respectively.

In yet another embodiment, the nozzle is positioned so that its axis is directed at an angle close to 180 ° to the side inner wall of the reservoir, from which this nozzle enters the reservoir.

The device is also made containing additional nozzles, arranged in such a way that the axis of each of them is directed at an angle close to 90 ° or 180 °, to the circuit covering the slots of the fluid flow, at the intersection of this axis and the circuit or to the side inner wall of the tank, from the side of which such a pipe enters the tank.

In the manufacture of the nozzles are differently oriented relative to the side inner wall of the tank, from the side of which they enter the tank.

Each of the slots of the fluid flow is positioned in such a way that the angle between the vertical projections of this slit and the axis of the tank at the point of their intersection lies in the range from 3 ° to 80 °.

The slots are made in such a way that the sum of their lengths is greater than the length of the axis of the tank or its fragment, around, above or below which these slots are located. We can say that the projections of the slots on the axis of the tank overlap each other.

The nozzle is positioned so that its axis is directed at a sharp or blunt, counting clockwise, the angle to the gap nearest to it. Thus provide a passing or transverse, respectively, the supply of fluid to the cracks.

Neighboring, aligned in the same way with respect to the axis, or wall, or the nearest slots, the nozzles are positioned at angles of 360 ° / n, where n is the total number of such nozzles. Good results are obtained for n <24.

One of the possible variants of execution is considered below on the example of creating a water stream.

The proposed device contains a conduit 1 of closed shape of non-circular cross section with pipes 2, 3, 4 of water supply on the side, for example, external, wall. On the upper end surface of the water conduit, flow slots 5 are made, forming a closed loop 6, in which the slots overlap each other in length. Water is radially supplied through the nozzles 2 to the internal cavity 7 of the water conduit, and through pipes 3 and 4, the water is tangentially supplied alternately tangentially to the internal wall 8 of the water conduit or to the outer generatrix of the closed loop 6, covering the set of discharge slots. In this case, the nozzles 3 provide water supply along the slots of the outflow 5 (associated water supply), and the pipes 4 - across the cracks (transverse water supply).

The water supply is carried out either through pipes 2, or 3, or 4, for example, alternately. When radially supplying water through nozzles 2, the set of outflow slots forms a compact vertical annular stream consisting of separate water films of height N with a small camber angle α ₁ . With a tangential water supply, a vertical annular jet is formed in the form of a sheaf with a camber angle α ₂ > α ₁ . At the same pressure and water flow rate at the inlet to the water conduit, the height of the formed water jets, depending on the method of water supply, is dependent on H> H ₁ .

The relationship of the distinguishing features with the claimed technical result is presented in the table:

technical result Claims No. one) 1, 6, 7, 11, 13, 14, 15, 18 2) 1, 7, 8, 9, 10, 11, 12, 16, 17, 18 3) 1, 2, 3, 4, 5, 16, 17, 18 four) 1, 2, 3, 6, 7, 11, 13, 14, 15, 18

Claims (18)

1. A device for creating a jet of the desired geometry, containing a body with an internal reservoir designed for fluid movement, the axis of which is a closed curve, as well as a nozzle for supplying fluid to it, while on the outer surface of such a body around, above or below said axis, or as at least one of its fragments, with a length of more than 50 mm, has slots made with the possibility of fluid flow out of them in the form of a combination of flat films with the formation of a jet, the cross-sectional area of which oh near said surface satisfies the following condition:

where S _w is the cross-sectional area of the fluid flows in the stream;
S _c is the area of the figure, limited by the contour covering the slits, for which such slots have a width of more than 0.5, and a length of more than 5 mm. 2. The device according to claim 1, characterized in that the type of said curve is selected from the list including: ellipse, polygon, or consists of parts of these curves. 3. The device according to claim 2, characterized in that said curve is a circle. 4. The device according to claim 1, characterized in that the said slots are located on the end surface of the said body. 5. The device according to claim 4, characterized in that the said slots are located on the upper or lower end surface of the said body. 6. The device according to claim 1, characterized in that the cross-sections of the said tank are not round. 7. The device according to claim 1, characterized in that the said pipe is located on the side surface of the said body. 8. The device according to claim 7, characterized in that the said pipe is located so that its axis is directed at an angle close to 90 ° to the contour covering the above-mentioned slots at the intersection of this axis and the contour. 9. The device according to claim 7, characterized in that the said pipe is located so that its axis is directed at an angle close to 180 ° to the contour covering the above-mentioned slots at the intersection of this axis and the contour. 10. The device according to claim 1, characterized in that the said pipe is located so that its axis is directed at an angle close to 180 ° to the side inner wall of the tank, from which this pipe enters the tank. 11. The device according to claim 1, characterized in that it includes additional nozzles arranged so that the axis of each of them is directed at an angle close to 90 ° or 180 ° to the contour covering the slots at the intersection of this axis and the circuit or to the side inner wall of the tank, from the side of which such a pipe enters the tank. 12. The device according to claim 11, characterized in that the said nozzles are differently oriented relative to the side inner wall of the reservoir, from the side of which such nozzles enter the reservoir. 13. The device according to claim 1, characterized in that each of these slots is located in such a way that the angle between the vertical projections of the slit and the axis of the tank at their intersection lies in the range from 3 to 80 °. 14. The device according to claim 1, characterized in that the sum of the lengths of said slots is greater than the length of said axis of the tank or its fragment. 15. The device according to claim 1, characterized in that the said slots are located at equal distances from each other. 16. The device according to claim 1, characterized in that the nozzle is located in such a way that its axis is directed under a sharp, counting clockwise, angle to the nearest gap to it. 17. The device according to claim 1, characterized in that the nozzle is located in such a way that its axis is directed obtuse, counting clockwise, the angle to the gap nearest to it. 18. The device according to claims 3 and 11, characterized in that adjacent nozzles, oriented in the same way with respect to said contour, or said wall, or the nearest slots, are located at angles of 360 ° / n, where n is the total number of such nozzles.

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