RU17568U1 - DEVICE FOR GENERATION AND TRANSPORTATION OF FOAM - Google Patents

Abstract

A device for generating and transporting foam, including a cylindrical body, a nozzle for supplying a foaming agent, an nozzle with an outlet installed coaxially to the body, a nozzle for supplying compressed air and foaming agents for the foam flow, characterized in that the umbrella nozzle is made in the form of a rod with a diffuser umbrella and the direction of the jet of the foaming agent into the mixing chamber, which is made in the cylindrical part of the housing with two tangentially directed inlet pipes of the components to generate foam, and namely, a compressed inert gas and liquid phase (water or pulp), with the umbrella diffuser rod placed at the outlet of the calibrated opening of the blowing agent nozzle, while the diffuser rod has a feed screw at its initial section by which it regulates the amount of the blowing agent and its atomization in the mixing chamber of the cylindrical body with the exit of the mixture on the blowing agents of the foam stream.

Description

DEVICE for GE1-1

And tr / shspopyrovashsh tsh

The utility model relates to mining and can be applied to extinguish underground fires in mine workings.

A device is known for generating and transporting foam, including a cylindrical housing, a nozzle for the sub-foam of the foaming agent, an umbrella nozzle with an open hole, and the possibility of spraying jets perpendicular to the surface of the housing, mounted coaxially to the housing, a nozzle for supplying compressed gas and a main foam pipe C No. 62 No. 3 EL. E 21 P 5/00. 1984).

The disadvantage of this device is that the device does not achieve sufficiently active mixing of the mixture components (compressed gas, liquid phase (pulp or water) and a foaming agent).

A device is known for generating and transporting foam, including a cylindrical body with a conical adapter at the end, a slotted nozzle of the compressed gas pododa, tangentially mounted to the surface of the cylindrical body, a nozzle of the pododa of the foam-forming solution and a foam-spraying nozzle and foaming foam blowers made in the form of longitudinal protrusions (automatic certificate of USSR no. 1298398, class E 21 P 5/00, 1985).

The disadvantage of this device is the complexity of the nozzle and the inability to deliver through them a waxy pulp from a clay solution.

The purpose of the invention is to increase the productivity and range of transportation of inert foam and foamed pulp through pipelines by reducing the hydrodynamic flow

E 21 P 5/00 A 62 C 5/02

device damage.

The goal is achieved by the fact that a device is provided for generating and transporting foam, including a barrel housing, a blower supply nozzle, an umbrella nozzle with an outlet installed coaxially to the housing, a compressed air supply nozzle and a foam flow blower, wherein the umbrella nozzle is made in the form of a rod with a diffuser with an umbrella and the direction of the blowing agent jet into the mixing chamber, which is made in the front part of the housing with two tangentially directed inlet pipes nents

to generate foam, namely compressed inert gas and liquid phase (water or pulp), with the rod. diffuser rod at the outlet of the calibrated hole of the foam nozzle, while the diffuser rod has a feed screw in its initial portion, by which it regulates the amount of foam and spraying it in the mixing chamber of the cylindrical body with the output of the mixture on the blowing agents of the foam stream.

The proposed set of distinctive features has useful properties that provide visual control of the percentage of foaming agent in the range of 2 - &%

and the ability to generate inert foam and foamed inert pulp.

Figure 1 is a drawing of a General view of the device with a partial section; figure 2 is a section aa in figure 1.

The device for generating and transporting foam contains a housing made of two parts — cylindrical I with tangential pipes 2 and 3, respectively. For supplying compressed inert gas to the liquid phase (water or pulp), pipe blowing agents 1 ’and 4, and conical 5 viewing window 6 and flange 7. for connecting to the main pipeline. A pipe 8 with a calibrated hole 9 is connected to the cylindrical I part, with it placed by means of a feed screw 10

with the rod II and the outlet has a diffuser umbrella 12 of the spray gun, while the nozzle 8 has a fitting 13 that gave the connection of the source of supply of the foaming agent. The output of the tangential nozzles 2 and 3 and the flow channel of the foaming agent through the Duffus umbrella II form a mixing chamber 14 for supplying the mixture to the pipe blowers 4.

The operation of the device is as follows.

In order to carry out work on the localization or extinguishing of a fire, the device is mounted through a connecting flange 7 on a main foam pipe (not shown) according to the adopted fire fighting technological scheme.

By means of connecting lines to the tangential branch pipe 2, a connecting shot source of compressed inert gas, for example, from an underground cold liquid gasifier

Nitrogen Ш1Г-0,3 / 1 6 or KAE-1 (design of RosNIIGD), and to the tangential pipe 3 - the source of water or clay pulp, to the pipe 6 through the nozzle 13 connect the foam supply line.

By generating an inert foam or foamed inert suspension from clay pulp at the same time, water or yogulpa and a foaming agent are supplied with compressed gas to the mixing chamber 14 of the Cylindrical part I of the device body. In this case, the supply volume of the foaming agent (2 ... 6) is regulated through the passage rod II by the supply screw 10, while the dosing umbrella 12 of the foam generator in the mixing chamber 14 is ejected in a circular fan towards the swirling centrifugal gas and pulp flows. Due to the action of centrifugal force, the foaming agent tends to cross the gas and pulp flow through the convexities of blowing agents 4, as a result of which intensive mixing of the flows with the formation of finely dispersed foam occurs, while the foam flow is twisted when the foam generator body I and 5 pass through.

which reduces the coefficient of hydrodynamic resistance of the initial section of the foam pipe. It is also possible to increase the critical velocity of the foam flow without violating its continuity.

Quality control of foaming and pressure is carried out respectively through the inspection window 6 and the pressure gauge of the cylindrical part of the housing I.

A useful model of the device provides an extension of its scope.

Patent Lawyer Authors:

M.A. Chernova 7 and Chuprikov

Yu.A. Fedchenko

A.S. Golik

S.P. Starkov L.A. Botvenko

Claims (1)

A device for generating and transporting foam, including a cylindrical body, a nozzle for supplying a foaming agent, an nozzle with an outlet installed coaxially to the body, a nozzle for supplying compressed air and foaming agents for the foam flow, characterized in that the umbrella nozzle is made in the form of a rod with a diffuser umbrella and the direction of the jet of the foaming agent into the mixing chamber, which is made in the cylindrical part of the housing with two tangentially directed inlet pipes of the components to generate foam, and namely, a compressed inert gas and liquid phase (water or pulp), with the umbrella diffuser rod placed at the outlet of the calibrated opening of the blowing agent nozzle, while the diffuser rod has a feed screw at its initial section by which it regulates the amount of the blowing agent and its atomization in the mixing chamber of the cylindrical body with the exit of the mixture on the blowing agents of the foam stream.