SU952353A1 - Method and apparatus for pulse-type spraying of liquid - Google Patents

Description

54) METHOD OF PULSED SPRAYING OF LIQUID AND DEVICE FOR ITS IMPLEMENTATION

The invention relates to methods for spraying liquids and apparatuses used in spray nozzles for humidifying air in nozzles for fuel distribution, in pulse water meters, jet pumps, in fire fighting, in military affairs for flame throwers, in pulse sprinkling systems, etc .

The known method of pulsed spraying of a liquid consists in supplying a stream of liquid and pulsing it, and a device for its implementation LI.

The disadvantage of this method is the low efficiency and low emission range of the mixture.

A device for carrying out: the said method comprises a tank with a water distribution spool device, the spool of which, under the action of the loads, is in the lower position and under the action of pressure exceeding the weight of the loads, rises upwards, opening an outlet for water discharge.

The disadvantage of this device is an insignificant water release distance, the impossibility of creating a directional sprayed mixture and complexity.

design of the water distribution spool device.

The closest to the proposed technical essence and the achieved result is a method of pulsed spraying of a liquid, which consists in supplying a directed main fluid flow under pressure and dividing it into portions with the subsequent release of the active medium and pulsed liquid spraying device specified by method 2 J .

A device for pulse spraying of a liquid contains a hollow body with a nozzle and nozzles for supplying a directional main flow of liquid and active medium, check valves and a control member.

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The disadvantage of this method and device for its implementation is the inefficiency and low quality of the spraying of the liquid, due to the cyclical nature of the process, due to the use of the combustible mixture to create a pressure in the chamber that pushes the liquid out of the latter, the range of the mixture is not sufficient, as the pressure is displaced 30 camera falls, so the uniformity of the emission of fluid is small. The device has a complex structure due to the piston group, the presence of a damper, an ignition device for igniting the combustible mixture and a system of valves and an electrical circuit required for this.

The purpose of the invention is to increase the efficiency and quality of the sprayed liquid and increase productivity.

This goal is achieved by the fact that according to the method of pulsed spraying of liquid, which consists in supplying a directional main fluid flow under pressure and dividing it into portions with subsequent ejection of each formed portion by the active medium, according to the invention, the main flow is divided into separate portions of fluid by pulsed flow active medium perpendicular to the main fluid flow ..

In addition, the directional main fluid flow is supplied under a pressure of 0.05–10-atm, and the active medium is fed into it under an UNDO pressure of 0.1–12 atm for 0.1–10 s with an interval of 5–15 s

Such a method can be carried out by a device of new design for pulsed spraying of a liquid, comprising a hollow body with a nozzle and nozzles for supplying a directional main fluid flow and an active medium., Check valves and an actuator, the governing body is made in the form of a pulse converter and connected to Him and the supply pipe, the active medium through the pipelines of the compressor, and the nozzle is made step-tapering in the direction of flow of the main fluid flow.

The drawing shows a device for pulsed spraying a liquid, a general view.

The device comprises a hollow body 1 with a nozzle 2 and nozzles 3 and 4 for supplying a directional main fluid flow and an active medium, respectively, check valves 5 and b and a control member.

This unit is made in the form of a converter of 7 pulses and connected to it and the pipe 4 to supply the active medium through pipelines 8 and 9 of the compressor 10.

Pipeline 8 serves to feed the active medium from compressor 10 through a pulse converter 7 in housing 1, pipe 9 to connect a pulse converter 7 to a compressor 10 to drive the pulse converter 7.

The nozzle 2 is made stepped-tapering in the direction of flow of the main fluid flow with the socket 11.

The pipeline 8 and the pipe 3 is equipped with pressure gauges 12 and 13.

The method of pulverizing a liquid on this device is carried out as follows.

When the control unit is turned on, the main flow through the nozzle 3 flows through the check valve 5 into the body 1 by the directed flow at a certain pressure.

The compressor 10 is turned on, from which the active medium flows through conduit 8 and through the transducer 7 pulses into nozzle 4. The check valve 6 is opened and the active medium is fed into the housing 1 due to its increased pressure compared to the main flow pressure.

The separation of the main flow of a liquid in a portion is produced by pulsing the active medium perpendicularly directed to the main flow of liquid.

At the same time, in the housing 1, the pressure rises, and the check valve 5 for supplying the main flow closes.

The pulsed feed of the active medium ensures the separation of a portion of the main flow and will force it out along a stepwise-converging nozzle 2.

The pressure in CS 1 will decrease, so the check valve 5 under the pressure of the main flow opens and the main flow enters the housing 1 in a certain amount. After that, the check valve b is closed, and then the pulse converter 7 is triggered to deliver the next pulsed volume the active medium, the check valve b will open and the active medium will separate some volume of the main flow and displace it along the stepwise-converging nozzle 2. At the same time, the air is compressed and at the exit of the nozzle 2 provides max. imalny emission portion formed by the main flow, for example water. Thus, a continuous ejection of portions is effected due to the active medium under high pressure, i.e. a hydro-pneumatic dynamic impulse jet is formed.

Example 1. A liquid, such as water, is fed by a directed flow at a pressure of 0/05 atm, and the active medium (gas) is fed into the flow under a pressure of 0.1 atm for 0.1 s with an interval of 5 seconds.

Claims (2)

At the same time, due to the increase in pressure to the volume compression of alternating volumes of liquid and gas, which is compressed, ejection directed with an increased range occurs, the liquid together with the gas, i.e. creates a continuous long-range jet of intensely atomized liquid. Example 2. A liquid, such as water, is fed by a directed flow under a pressure of 5 atm, and a gas is fed into the flow under a pressure of 5.5 atm for 5 s with an interval of 10 s. At the same time, due to the increase in gas pressure and volume compression of alternating volumes of liquid and gas, which is compressed, the emission of liquid with gas, i.e. a continuous long-range jet of intensely mixed and sprayed fluid is created. This jet is more than twice the ejection range compared to existing methods of spraying the mixture at the same liquid and gas supply pressures. Example 3. A liquid, for example water, is supplied by a directed flow under a pressure of 10 atm, and gas is supplied to a stream under a pressure of 12 atm for 10 s with an interval of 15 s. At the same time, due to the pressure increase of the gas and the volumetric compression of alternating volumes of liquid and gas that is compressed, a long-range ejection of liquid together with gas, i.e. a continuous long-range jet of intensely mixed and sprayed fluid is created. This jet exceeds its discharge range by more than three times as compared with existing methods of spraying the mixture at the same liquid and gas supply pressures. Thanks to the proposed method and apparatus for carrying out the method of pulsed spraying of a liquid, for example water, the efficiency and quality of spraying of a liquid are increased and the range of the mixture is significantly increased, which is very important in many industrial fields. The device is structurally simple, has increased performance. It is less energy-intensive and energy-intensive than existing devices of similar purpose. The application of this method and device is only for cleaning; fish barriers will give an economic effect of more than 1 million rubles. Claims 1. A method of pulsed spraying a liquid, consisting in supplying a directional main flow of a liquid under pressure and dividing it into portions with subsequent ejection of each portion formed by an active medium, characterized in that, in order to improve the efficiency and quality of spraying a liquid, Separate portions of the fluid are produced by pulsing the active medium perpendicular to the main fluid flow. 2. A method according to claim 1, characterized in that the directed main fluid flow is supplied under a pressure of 0.05-10 atm, and the active medium is fed into it under a pressure of 0.112 atm for 0.1-10 seconds with an interval of 5-15 seconds . 3. A device for pulsed spraying of a liquid, containing a full body with nozzles and nozzles for supplying a directional main flow of liquid and active medium, check valves and control, an organ characterized in that, in order to improve the performance of the device, the efficiency and quality of spraying, the body is made in the form of a pulse converter and connected to it and to the nozzle for supplying the active medium through the compressor pipelines, and the nozzle is made stepwise tapering in the direction of flow of the main th fluid flow. Sources of information taken into account during the examination. 1. USSR author's certificate 187121, cl. H 01 B 17/52, 1965. 2. Authors certificate of the USSR 501718, cl. B 05 B 1/08, 1973 (prototype). ff L YU