SU825101A1 - Flame extinguisher for auxiliary systems of power plants - Google Patents

Description

the partitions placed in the case with mutually displaced otar rn ml and cooler. The cooler is made of a composition obtained by pressing, containing carbonate, aluminum chloride and other compounds, as well as 10-16% binder (Teflon or poly, vinyl acetate). The cooler is placed in the housing from the inlet side of the gas stream and a large amount of heat is expended on its decomposition. Behind the cooler are partition walls with holes for trapping solid particles.

Thus, this device combines structural components that provide cooling of combustion products and filtering solid particles, which significantly increases the fire and explosion safety and purity of the gas.

The disadvantage of this flame arrester is the low efficiency of the device due to the possibility of the flow of solid 1x hot particles of both the combustion products and the cooler due to the uneven cooling of the gas flow in the cooler located in front of the stream relative to the gaps to catch solid particles over the living section, and the ability to squeeze hot solids through openings in partitions.

The purpose of the invention is to increase the efficiency of the flame arrester,

The goal is achieved by the fact that in a known device comprising a housing with inlet and outlet channels, partition walls with mutually offset openings and cooler, there are catch chambers filled with elastic-porous material and mounted on the bulkheads along the flow, and the cooler is made a package of deaf washers made of resilient-porous material and installed in front of the exit channel.

The catching chambers are made in the form of successively alternating discs and rings.

Elastic-porous material in the cooler chambers and washers has a decreasing porosity along the flow path.

Metal rubber is used as an elastic-porous material.

The drawing shows a flame arrester for auxiliary systems of power plants, a section.

In its casing 1 with inlet 2 and outlet 3 channels are placed. Partitions 4 with mutually offset holes -5 and 6, catching chambers 7, made in the form of successively alternating disks and rings filled with elastic-porous material and held by the shoulder 8, and the package 9 washers cooler of resilient-porous material, installed in front of the output channel 3.

Elastic-porous material in the catching chambers 7 and the pack of 9 cooler washers has a decreasing porosity along the flow, defined by the formula

OBO

V void volume

Where

porous honey

material

 -volume porous sample.

Metal rubber is used as an elastic-porous material.

The porosity of the elastic-porous material in the catching chambers 7 (metal rubber) is advisable to choose large, for example, from 0.6 to 0.4, in order to ensure easy penetration and retention of the solid heated particles.

The diameter of the wire from which the metal rubber is made, it is advisable to choose variable, decreasing along the flow for each catching chamber 7, for example, from 1 to 0.5 mm. EI708, 1X18H9T steel and others resistant to high temperatures should be chosen as the material. This reduces the likelihood of destruction of the filler material of the collection chambers 7.

Claims (2)

To keep the filler in the catch chambers 7, you can perform, for example, caulking or rolling the bead 8, the length of which is advisable to choose at least -7-D (here D is the inner diameter of the housing 1), and its inner diameter d and thickness o equality of areas of the inlet sections of the gas flow in the catching chambers to the holes in the partition 4. Such length L and geometrical dimensions d and S of the collar 8 provide the most effective retention of the solid heated particles and reduce the likelihood of their passage (as through 5 and 6 offset holes 5. 5 Pack of 9 washers; the bodies are made of three successively installed coaxially longitudinal axis of the body of cylindrical elements of elasto-porous material, for example metal rubber, with a porosity decreasing for each element, for example, from 0.6 to 0, a wire diameter with a variable diameter decreasing downstream, for example, from 0.5 to 0.03 mm. Behind a pack of 9 cooler washers, there is a perforated disk 10, which plays the role of a power framework and is designed to prevent sales and prorsha -ele cylindrical cops in the core gas flow. EI708, JX18H9T and other resistant to high temperatures should also be chosen as the material for the wire needed to make a pack of cooler washers. For housing 1, stainless steels should be used, the mechanical properties of which allow assembly operations with high quality to be performed. The device works as follows. High-temperature gas through the inlet channel 2 enters the inside of the housing 1. At the same time, the solid hot particles get into the catching chamber 7, which is located opposite along the flow path, where they are trapped in the elastic-porous material. At the same time, the porosity of the elastic-porous material ensures easy penetration of solid heated particles of large diameters into the interior, and a relatively large wire diameter reduces the likelihood of the material itself breaking. Partially cooled and purified gas flows successively to mutually offset openings 5 and 6 and undergoes further cooling and cleaning in catching chambers 7. Substantially purified and partially cooled gas flow goes to a pack of 9 cooler washers, in which the porosity and diameter decrease along the course of the flow elasto-porous material wires provide almost complete cleaning of solid heated particles and a decrease in the temperature of the flowing gas to a permissible, from the point of view of the operability of the design and the consumer gas Firefighting or its application or drainage. The latter condition is provided by the axial dimensions and the number of washers in the package 9 cooler washers. The proposed flame arrester for auxiliary systems of power plants provides a more uniform cooling of high-temperature gas with almost complete removal of solid particles. This allows either explosion-proof drainage of already used combustible gases, or to obtain a gas stream that is clean from solid incandescent particles and cooled to the required temperature, which can be used by the consumer. Claim 1. Flame arrester for auxiliary systems of power plants, comprising a housing with inlet and outlet channels, partition walls with mutually offset openings placed in the housing, and a cooler characterized in that, in order to increase efficiency, it has catching chambers filled with elastic porous material and installed on the walls along the flow, and the cooler is made in the form of a package of deaf washers of resilient-porous material and installed in front of the outlet channel. 2. A fire extinguisher according to claim 2, characterized in that the trapping chambers are made in the form of successively alternating discs and rings. 3. Flame arrester according to claim 1, characterized in that the elastic-porous material in the collecting chambers and cooler shells has a porosity decreasing in the course of the flow. 4. Fire extinguisher in PP. 1-3, characterized in that metal rubber is used as the elastically porous material. Sources of information taken into account in the examination of 1.Zak Japan Japan No. 51-29256, cl. 51 D 51, .1976. 2. US patent W 988888, cl. 60-24, V976.