SU588388A1 - Device for preparing vapour-gas mixture - Google Patents

Description

(54) INSTALLATION FOR RECEIVING A STEAM-GAS MIXTURE

The invention relates to devices for producing inert gases, and can be used, for example, in the mining industry to prevent explosions and extinguishing fires in mines and mines.

An inert gas generator is known, including an air-jet engine, an ejector channel, after-burning with a water jacket, a fuel supply system, and; water supply system, the afterburning chamber is equipped with a grating made in the form of a cone

one.

A disadvantage of the known device is a high lattice resistance, which leads to a decrease in its performance.

Closest to the present invention is an installation for producing a vapor-gas mixture, including a blower, fuel and water supply systems, and a combustion chamber, which is made up to its constriction, its parts in the form of two concentric tubes forming an annular cavity, hermetically closed at the outlet wall, and on an inlet bottom with windows for supplying fuel and air to the annular cavity. In the annular cavity, the combustion chambers are installed radially to the surfaces of the pipes, longitudinal partitions forming, together with the pipes, the bottom and the wall, two-way channels, and the internal pipe is made with windows that align with the two-way channels 2.

A disadvantage of the known installation is the high resistance of the combustion chamber, which leads to a decrease in the pressure of the vapor-gas mixture on the outlet and a decrease in the performance of the installation.

The purpose of the invention is to reduce the resistance of the combustion chamber.

This is achieved by the fact that the partitions of the two-way channels are installed along a helical line normally to the surfaces of the pipes.

FIG. 1 schematically shows the proposed installation; pas figs. 2 - scan the annular cavity between the pipes.

The installation includes a blower 1, a combustion chamber 2, a fuel supply system 3 and a water supply system 4. The combustion chamber consists of two concentric pipes - inner 5 and outer 6, forming an annular cavity closed at the outlet wall 7, bottom 8 and tapering part 9. The bottom is equipped with air nozzles 10 and has windows 11 in which nozzles 12 are installed for fuel supply into the annular cavity.

In the annular cavity there are 13 longitudinal and 14 transverse partitions. Longitudinal partitions are installed radially to the surfaces of pipes 5 and 6, transverse partitions are installed along a helical line pormalno to the same surfaces of pipes. Partitions with tubes, bottom and wall form two-way channels 15. On the inner pipe 5 at the bottom there are windows 16, combined with two-way channels.

The installation works as follows.

The air from the blower 1 enters the bottom 8 of the combustion chamber. Part of the air through air nozzles 10 enters the inner pipe 5, and part through the windows I into two-way channels 15. Liquid fuel is fed through the nozzles 12 through the nozzles 12, which are evaporated and mixed with air into them, forming a fuel-air mixture. Next, the air-fuel mixture is heated in two-way channels to the required temperature and through the windows 16 enters the inner tube 5 to the food 8, where it is additionally turbulized by air jets flowing from the air latrubki 10, after which it enters the combustion and combustion zone.

Since the two-way channels are made expandable, as the fuel-air mixture moves, as its volume increases (due to heating), the flow rate remains constant along the entire length of the channels, and hence the resistance of the combustion chamber is lower than that of the known one.

12 Yu

At the outlet of the chamber, the combustion products are cooled with water supplied by the system 4. When the gas stream is cooled, the water evaporates and the vapor-gas mixture formed is supplied to the fire center.

Claims (2)

1. Author's certificate number 315761, - cl. E 21F 5/00, 1972. 2. Certificate of author No. 484307, cl. E 21F 5/00, 1973. J6 / j 12