SU1084466A2 - Apparatus for generating and conveying foam - Google Patents

Abstract

DEVICE FOR GENERATION AND TRANSPORTATION OF FOAM by aut. St. No. 618565, characterized in that, in order to increase the efficiency of localizing and extinguishing endogenous fires in the mines of the mine, by reducing the time to create a foam curtain and improving foam injection parameters, it is equipped with an additional injection nozzle and an adapter, and each adapter is made flexible and additional discharge pipe is equipped with a gate. (L o 00 4 4 05 С

Description

The invention refers to 1o |) which is industrialized and can be used in the localization and quenching of underground knives that have arisen in the spent part of coal seams.

According to the main author. St. No. 618565 discloses a device for generating and transporting foam, comprising a cylindrical body, a generating chamber, a foam generator cassette mounted on a common drive shaft with a centrifugal pump, a discharge nozzle, an adapter and supply lines 1.

A disadvantage of the known device is the low efficiency of localization and the suppression of endogenous fires in depleted spaces due to the limitation of performance — the flow cross section of the discharge pipe and the need for considerable time to create a foam curtain.

The purpose of the invention is to increase the efficiency of localization and extinguishing of endogenous fires in mined-out spaces of mines by reducing the time to create a foam curtain and improving foam injection parameters.

This goal is achieved by the fact that the device for generating and transporting foam is provided with an additional discharge pipe and an adapter, each adapter being made flexible, and the additional pressure pipe is equipped with a gate.

FIG. 1 shows a device for generating and transporting foam, a longitudinal section; in fig. 2 - a technological scheme for the localization of endogenous fire using the proposed device.

The device consists of a cylindrical body 1 with discharge nozzles 2 and 3, equipped with flexible adapters 4 and 5 with observation ports 6 and 7, and pressure gauges 8 and 9. One of the nozzles has a channel cutoff 10. Inside the housing, a centrifugal wheel 11 and a foam generator cartridge cassette 12 are mounted on a common drive shaft, made in the form of a mesh screw blade. Housing: Schtutser 13 for connecting an air conveyor: 15 to an air spraying chamber 14 and a fitting 15 for connecting a duct, supplying a foaming agent solution to the sprayer 16.

Technological scheme of localization of endogenous fire in complex mechanized bottomhole without stopping

 ; niie.iriaiaiLMoro 1.gpOHCTBfl IS. iif i;: / -; hPMOIIpfjBOAbl 17 l 18

with 11e |) (1o) 1-1 | 5 () | 5 ;; : ii; bj; ii with segments 19 ii 20. Usgroyst-; {JaotrraeT with. In the following way. For loka / 1k.chatsii endogenous fire;.,

two foam lines 17 and 18 are laid at the level of the ventilation drift at the level of the ventilation layer, at the ends of the coal seam; At the ends of the foam pipes, the perforated sections of pipes 19 and 20 are fixed, one of the pipelines is placed along the lava tempered and serves as a conductor for creating a foam curtain in the path of penetration of fire gases). The foam lines 17 and 18 are connected by means of flexible adapters 4 and 5 to the proposed device and foam is pumped into the waste part of the complex before the foam curtain is created on the way

Q exit of fire gases.

Foam injection is carried out simultaneously by two foam pipes with one device before the foam exits under the complex. When creating a foam curtain, one of the foam pipes can be turned off by closing

shchybera 10, at the same time on the second. pipeline can provide greater performance and pressure. Control over the quality of foaming and injection pressure is carried out respectively through viewing windows 6 and 7 of flexible adapters 4 and 5 and by gauges 8 and 9. The flexibility of adapters 4 and 5 ensures the installation of foam pipes li in any direction and at different angles relative to the device and each other. It does not produce foam injection at the same time on both foam pipes, varying within wide limits of performance and pressure, depending on the permeability of the collapsed rocks of the developed space.

Technical and economic efficiency

0 from the implementation of the invention is to improve the mode and reduce the time of creating a foam curtain on the path of penetration of fire gases, providing the possibility of changing the direction of the foam flow, which greatly increases the efficiency of localization and extinguishing of endogenous fires arising from coal spontaneous combustion in the developed spaces of the shahs.

The invention also allows

0 adjustments optimize foam injection parameters (length and resistance of foam lines, amount of foam, etc.).

FIG. 2

Claims (1)

DEVICE FOR GENERATION AND TRANSPORTATION OF FOAM by ed. St. No. 618565, characterized in that, in order to increase the efficiency of localization and extinguishing endogenous fires in the mine openings by reducing the time for creating a foam curtain and improving the foam injection parameters, it is equipped with additional discharge pipe and adapter, each adapter is made flexible, and An additional discharge pipe is equipped with a gate. FIG.