Kochetov's gas-drop jet generator

FIELD: process engineering.

SUBSTANCE: invention relates to gas-drop jet generation and may be used in fire fighting, agriculture, etc. Fluid feed comprises forcing fluid axially via feed branch pipe, confuser and cylindrical nozzle aligned and communicated with said branch pipe. Fluid tangential feed is executed via conical cartridge aligned with cylindrical nozzle with vortex annular chamber secured atop cylindrical part of said cartridge and provided with fluid feed pipe. Two lines of fluid feed tangential channels are made along edges of said annular chamber. At least three tangential channels are arranged in every said line to communicate annular chamber with housing cylindrical chamber.

EFFECT: higher efficiency of fire fighting.

2 cl, 2 dwg

 

The invention relates to the technology of power generation spray jets of high range and can be used in fire-fighting techniques in agriculture for irrigation and other industries associated with the need for a long-range gas-liquid jets.

The closest object of the claimed device is a device for creating a gas-droplet flow on the patent of Russian Federation №21075541, which contains the system fluid or gas and gas-dynamic nozzle with a mixing chamber of a liquid and gas.

A disadvantage of the known device consists in the impossibility to increase by known means the range of gas-droplet jet over 50 m, which is essential for fighting fires in high-rise buildings and high-rise structures.

The technical result - improving the efficiency of fire by increasing the range of gas-droplet jet and its specially selected size when interacting with the object.

This is achieved by a device for creating a gas-droplet stream containing feed systems liquid and gas and the nozzle, the system fluid is carried out in two directions, including axial flow of liquid through the supply pipe and connected in series and coaxially with it confuser and a cylindrical nozzle, and the tangential flow of liquids and through coaxial with the cylindrical nozzle body in the form of a cylindrical sleeve, on the cylindrical part of which is fixed a vortex ring chamber with an inlet for the fluid, while the edges of the annular chamber are made of two rows of the inlet fluid tangential channels, and in each row there are at least three tangential channel connecting the annular chamber with the cylindrical cavity of the body, which is coaxially attached shaped nozzle.

Figure 1 shows the functional diagram of the device for creating a long-range gas-droplet flow, figure 2 is a view of a figure 1.

Device for creating a long-range gas-droplet flow (figure 1) contains a system of fluid in two directions, including axial flow of liquid through the supply pipe 1 and connected in series and coaxially with it confuser 3 and a cylindrical nozzle 4. The tangential fluid flow through coaxial with the cylindrical nozzle 4 case 5 in the form of a cylindrical sleeve, a cylindrical part which is fixed vortex ring chamber 6 with a pipe 7 for supplying the liquid, while the edges of the annular chamber 6 is made of two rows 8 and 9 of the inlet fluid tangential channels (not shown), and in each row there are at least three tangential channel connecting the annular chamber 6 with a cylindrical cavity 10 of the housing 5, which is oono attached round plate 11 (figure 2), located perpendicular to the axis of the vortex ring chamber 6 and is rigidly connected with a cylindrical cavity 10 of the body 5 in its end section and perpendicular to the circular plate 11 attached slit nozzle 12, is made in the form of a rectangular parallelepiped with the throttle through rectangular hole 13 connected to the cavity of the housing 5.

Device for creating a long-range gas-droplet flow works as follows.

The device is moved to its original position with the help of a vehicle (not shown) and is directed towards the object, to which should be feed gas-droplet flow through control system controls movement of the nozzle (not shown). Included turbo-compressor installation, which is part of the gas supply system, and an accelerated air stream from an output device of the power plant is sent to the input 2 of the supply of gas to the mixing chamber 10, where the formation of two-phase flow.

The vortices of the fluid injected into the mixing chamber 10 through the rows 8 and 9 of the tangential channels that are mixed with the incoming air stream, resulting in a gas-droplet stream. Maximum air pressure at the inlet to the nozzle and the relative concentration of the emission of water in two-phase flow are selected from the conditions of extremely dense packing of the water particles in the air stream: gP=5,7108 PA, where P is the gas pressure at the inlet to the nozzle; g is the relative water concentration in two-phase flow. To achieve the necessary (over 50 m) flight range of gas-droplet jet pressure gas (air) inlet nozzle must exceed P=5,5105 PA;

g=G/G=4,9

where G=26 kg/s mass flow rate of water; G=5.3 kg/s air mass flow; Sci=298 K - temperature two-phase flow; L=1500 mm - the length of the body 5 has a cylindrical sleeve with a nozzle; D=50 µm average diameter of water droplets in the air stream.

Created in the mixing chamber 10 two-phase flow at the above settings can accelerate profiled in the nozzle channel 12. The nozzle allows compact gas-droplet jet with a relatively homogeneous distribution of water droplets in the cross section of the jet.

The results indicate that two-phase flow, the parameters of which are chosen according to the above conditions, accelerates in gas-dynamic body to the speed at which the range of gas-droplet jet is 65 meters

The proposed invention can be used in various fields of engineering, requiring the generation of long-range spray jets, flight distance which exceeds 50 feet, the Most effective use of the invention in fire technology, especially when extinguishing fires in tradepost the Phnom foci and objects and in agriculture for irrigation.

1. Device for creating a gas-droplet stream containing feed systems liquid and gas and the nozzle, characterized in that the supply system of the liquid is carried out in two directions, including axial flow of liquid through the supply pipe and connected in series and coaxially with it confuser and a cylindrical nozzle, and a tangential fluid flow through coaxial with the cylindrical nozzle body in the form of a cylindrical sleeve, a cylindrical part which is fixed vortex ring chamber with an inlet for the fluid, while the edges of the annular chamber are made of two rows of the inlet fluid tangential channels, each row has at least three tangential channel connecting the annular chamber with the cylindrical cavity of the body, which is coaxially attached shaped nozzle.

2. Device for creating a gas-droplet jet according to claim 1, wherein the cylindrical cavity of the housing coaxially attached round plate, located perpendicular to the axis of the vortex ring chamber and rigidly connected with the cylindrical cavity of the body in its end section and perpendicular to the circular plate attached slotted nozzle, made in the form of a rectangular parallelepiped drosseln through rectangular hole, connected to the cavity of the housing.



 

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1 tbl, 2 ex

FIELD: agriculture.

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EFFECT: increased efficiency and enhanced reliability in operation.

4 cl, 4 dwg

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