RU2401676C1 - Cartridge fire barrier with radial channels - Google Patents

Abstract

FIELD: fire-fighting equipment.

SUBSTANCE: in cartridge fire barrier with radial cannels, which includes body, made in form of bearing flange and lid, connected to each other by at least three fastening elements, fire barring element of cartridge type is placed between body base and lid, inside it. Fire bar element is made in form of packet of put on perforated cylinder with lid of flat and crimped metal rings, alternating with formation of radial channels and pressed in packet by nut. Packet rings are made from alternating continuous and perforated metal tapes.

EFFECT: increase of fire suppression efficiency.

3 cl, 4 dwg

Description

Fire arresters are designed to be installed on equipment: on pipes for the discharge of combustible gases into the atmosphere or on a torch (waste fire arresters); on inter-equipment and inter-workshop communications (communication fire arresters) and in front of the burners. They are also intended to protect reservoirs with petroleum products from flame penetration from outside, but they are beginning to be widely used to protect various technological apparatuses of the chemical industry.

Known flame arrester (AS USSR No. 58888 - prototype), comprising a housing made of a base and a lid, between which a cassette-type flame arrestor is located.

A disadvantage of the known technical solution is the relatively low efficiency of flame suppression due to the fact that the combustible mixture freely passes through narrow channels and the flame can spread to the entire height of the flame retardant elements. One of the drawbacks of cassettes of flat and corrugated tapes rolled into a roll is their low mechanical strength.

EFFECT: increased flame suppression efficiency.

This is achieved by the fact that in a cassette fire arrester with radial channels containing a housing made of a base and a cover, between which a cassette-type fire arresting element is located, it consists of a housing made in the form of a support flange and a cover interconnected by at least , three fasteners, and between the base of the case and the cover, inside it is a cassette-type fire-retardant element with radial channels, which are made in the form of a package of alternating flat and corrugated s metal rings that are worn on a perforated cylinder with a lid and clamped in the nut bag.

Figure 1 shows a diagram of a cassette flame arrester with radial channels, figure 2-4 - embodiments of a flame retardant element (remote elements).

Cassette fire arrester with radial channels (figure 1) consists of a housing 6 made in the form of a support flange and a cover 5, interconnected by at least three fasteners 7. Between the base of the housing 6 and the cover 5, there is a flame retardant inside cassette-type element with radial channels, which are made in the form of a package of alternating flat and corrugated metal rings 3. The rings are worn on a perforated cylinder 4 with a cover 1 and clamped in a bag with a nut 2.

An embodiment of the fire-retarding element is possible when a packet of alternating flat and corrugated metal rings 3 is made so that between the corrugated tapes 9 there is a perforated tape 10, which allows to increase the throughput of the combustible mixture when suppressing the flame. A possible embodiment with alternating solid 8 and perforated 10 metal tapes (figure 2).

The package of rings 3 can be made of corrugated tape 9 and a less rigid flat metal mesh 11 (Fig.3), located with a bend between the corrugations of the tape 9. It is possible to alternate a flat metal tape 8 and the mesh 11.

The package of rings 3 can be made of corrugated 9 and flat 8 metal tapes (Fig. 4), so that radial narrow channels are formed in it, in which additional flame arresters in the form of mesh or porous bodies 12 of cylindrical or spherical shape are arranged alternately.

Cassette fire arrester with radial channels is as follows.

The pack of rings 3 forms narrow radial channels through which the combustible mixture freely passes, and the flame cannot propagate.

The rings are made of aluminum foil with a thickness of 0.30 ÷ 0.47 mm. In this case, the cross section of the channels formed by the corrugated tape has a triangular shape with a triangle base of 3.9 ÷ 4 mm and a height of 1.15 ÷ 1.25 mm.

On tanks with flammable liquids, cassette fire arresters are often installed in series with breathing and safety valves to prevent flame from entering the tank.

Claims (3)

1. A cassette fire arrester with radial channels, comprising a housing made in the form of a support flange and a cover interconnected by at least three fasteners, and a cassette-type fire arresting element located between the base of the housing and the lid inside it, which is made in the form of a package worn on a perforated cylinder with a cover of flat and corrugated metal rings, alternating with the formation of radial channels and clamped into the package with a nut, characterized in that the rings of the package are made from alternating continuous and perforated metal tapes. 2. The flame arrester according to claim 1, characterized in that between the corrugations of the corrugated tape is located with a bend less rigid flat metal mesh. 3. The flame arrester according to claim 1, characterized in that in the radial channels with alternation there are additional flame arresters in the form of mesh or porous bodies of cylindrical or spherical shape.

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