RU81081U1 - POWDER FIRE EXTINGUISHING MODULE - Google Patents

Abstract

The utility model relates to fire fighting equipment, in particular, to powder fire extinguishing devices, and can be used to suppress fires, including in inaccessible places. The technical result when using the proposed module is the uniform distribution of the concentration of powder in the protected volume and on the surface in a given direction and area, increasing the penetration range of the powder cloud while maintaining the effective fire extinguishing ability of the module, when placed at a height of 4 meters. The specified technical result is achieved in that the powder fire extinguishing module, comprising a housing filled with fire extinguishing powder with an outlet nozzle and a destructible diaphragm, a gas generator located inside the housing, and a hollow jet divider, made in the form of a cylinder that goes into a hemisphere with holes, mounted coaxially with the exhaust nozzle, characterized in that the length of the cylindrical part is 0.2-0.45 of the diameter of the destroyed diaphragm, the holes are made on the entire surface of the hemisphere or on its part, and the area openings is 20-40% of the area of a hemisphere. 4 cpf, 1 ill.

Description

The utility model relates to fire fighting equipment, in particular, to powder fire extinguishing devices, and can be used to suppress fires at the initial stage, including in inaccessible places.

The known powder fire extinguishing module according to patent No. 51512 (class A62C 35 \ 00, publ. 2005). This module contains a housing with a spray nozzle covered by a diaphragm, fire extinguishing powder and a gas generating element located inside the housing, the housing is equipped with a bracket with a device for it fastenings.

A device for extinguishing a fire according to the patent of the Russian Federation No. 43179 (class A62C 35/00, publ. 2005) is known. The known device comprises a body filled with fire extinguishing powder with an outlet nozzle and a destructible diaphragm. Inside the housing is a gas generator. Outside of the housing, a hollow jet divider is rigidly fixed coaxially to the exhaust nozzle. The divider is made in the form of a cylinder turning into a hemisphere, and the length of the cylindrical part is 0.5-0.8 of the diameter of the destructible diaphragm.

Known devices during operation provide uniform distribution of powder over the protected area, but there are reasons that prevent their use - insufficient penetration range of the powder cloud.

It was also experimentally established that with the available area of the holes there is a limitation of fire extinguishing ability

surface, so with the length of the cylindrical part in the range from 0.5 to 0.8 of the diameter of the diaphragm and the available area of the holes, stable quenching is observed only at a placement height of 2.0-2.5 meters, which is not always a sufficient condition for using the module in real object.

The device according to the patent of the Russian Federation No. 43179 is selected as a prototype, as the closest technical solution for the combination of essential features and the achieved technical result.

The task to which the proposed utility model is aimed is to create a powder fire extinguishing module that provides the range and direction of the powder extinguishing agent, with a height of up to 4 meters.

The technical result when using the proposed module is the uniform distribution of the concentration of powder in the protected volume and on the surface in a given direction and area, increasing the penetration range of the powder cloud while maintaining the effective fire extinguishing ability of the module, when placed at a height of 4 meters.

The specified technical result is achieved in that the powder fire extinguishing module, comprising a housing filled with fire extinguishing powder with an outlet nozzle and a destructible diaphragm, a gas generator located inside the housing, and a hollow jet divider, made in the form of a cylinder that goes into a hemisphere with holes, mounted coaxially with the exhaust nozzle, characterized in that the length of the cylindrical part is 0.2-0.45 of the diameter of the destroyed diaphragm, the holes are made on the entire surface of the hemisphere or on its part, and the area openings is 20-40% of the area of a hemisphere.

The simplicity and manufacturability of the assembly structure is ensured by the fact that the diaphragm is installed in the exhaust nozzle through the thrust ring, which allows it to be fixed without additional technological methods, the thrust ring does not change the geometry of the outlet and does not interfere with the free passage of the extinguishing powder.

Holes in the hemisphere are oriented to the center of the hemisphere base and are made along the radial axes of the hemisphere at an angle of distribution from 30 ° to 90 ° relative to the axis of the divider, which ensures the penetration range of the extinguishing powder, as well as its distribution in a given direction.

For ease of installation, the module is made with the possibility of mounting, and the mounting unit is located in the upper part (ceiling version) or on the side surface (wall version) of the housing. With the wall-mounted version of the module manufacturing, the hemisphere openings are made only on a part of its surface directed to the protected volume of the room.

The utility model is illustrated by drawings. Figure 1 shows a General view of the module in section.

The powder fire extinguishing module contains a housing (1) filled with fire extinguishing powder (2), with an outlet nozzle (3), a jet divider (4) and a destructible diaphragm (5). A gas generator (6) is placed inside the housing (1). The hollow jet divider (4) consists of a cylindrical part (7) passing into a hemisphere (8) with holes (9). The length of the cylindrical part (7) is 0.2-0.45 of the length of the destructible diaphragm (5), the holes (9) are made on the entire surface of the hemisphere (8) or on its part, depending on the version of the module installation location. The holes (9) on the hemisphere (8) are oriented to the center of the base and are made along the radial axes at an angle from 30 ° to 90 ° relative to the axis of the divider (4). The area of the holes (9) is 20-40% of the area

hemispheres (8). The diaphragm (5) is installed in the exhaust nozzle (3) through the thrust ring (10) and the fastening ring (11). The mount (12) is located on the side surface of the housing (1) or in the upper part (not shown in the drawing).

The proposed module works as follows:

When an electrical impulse is applied to the gas generator (6), the latter is triggered and generates gases in the internal volume of the housing (1). Gases aerate the extinguishing powder (2) and a gas-powder mixture is created inside the housing (1). When the gas pressure rises to a certain level, the diaphragm (5) installed in the exhaust nozzle (3) is destroyed through the thrust ring (10) and the fastening ring (11). The gas-powder mixture passing through the outlet nozzles (3) enters the cylindrical part (7) of the hollow jet divider (4), where the velocity field is aligned, and then into the hemisphere (8) and through the openings (9) enters the protected volume. The module can be placed on various objects using the mount (12) located on the side or in the upper (not shown in the drawing) part of the housing (1).

Tests of the manufactured modules and prototype were carried out in accordance with the methods presented in NPB 67-98 “Automatic powder fire extinguishing installations. Modules General technical requirements. Test Methods. "

The result of extinguishing model fires (gasoline) was recorded on the maximum possible fixed area (S ₁ , m ² ) on which the fire was extinguished, and the placement height (H ₁ , m) with which this result was ensured. For each example, at least 3 trials were conducted. Table 1 presents the test results of the fire extinguishing modules obtained on experimental samples and prototype.

Analyzing the results presented in table 1, it can be noted that stable extinguishing results are observed in the range of heights from 1.5 to 4.0 meters when using the totality of the declared essential features. Compared with the prototype, there is an increase in fire extinguishing ability with an increase in the height of the module to 4 meters.

Thus, the claimed parameter of the ratio of the cylindrical part of the divider and the diameter of the destructible diaphragm in combination with the area of the holes are necessary and sufficient to ensure optimal parameters for extinguishing with a module placement height of up to 4 meters.

Thus, the proposed powder fire extinguishing module is aimed at solving the problem and meets the eligibility criteria under current law.

Table 1 Specifications Examples No. one 2 3 four 5 6 The ratio of the length of the cylindrical part to the diameter of the destroyed diaphragm 0.2 0.45 0.2 0.45 0.3 0.2 Hole area,% of hemisphere area twenty fifty fifty twenty thirty fifty The orientation angles of the spray holes (from 30 to 90 ° C) thirty 90 90 thirty 60 thirty Diameter of a hole, mm (from 5 to 20) 5 twenty twenty 10 5 5 Extinguishing area, - S ₁ , m ² , const. - H ₁ ,, height, m 1,5 25 25 24 25 25 24 2.5 25 25 24 25 25 24 4.0 25 25 24 25 25 24

Continuation of table 1 Specifications Examples No. 7 8 9 10 eleven 12 The ratio of the length of the cylindrical part to the diameter of the destroyed diaphragm 0.1 0.5 0.2 0.45 0.2 0.2 Hole area,% of hemisphere area twenty twenty fifteen 55 twenty twenty The orientation angles of the spray holes (from 30 to 90 ° C) 90 90 60 90 thirty thirty Diameter of a hole, mm (from 5 to 20) 5 twenty 10 5 four 25 Extinguishing area, - S ₁ , m ² , const. - H ₁ ,, height, m 1,5 22 21 twenty 21 21 23 2.5 23 twenty 21 22 twenty 23 4.0 22 twenty 21 23 22 22

Continuation of table 1 Specifications Examples No. 13 fourteen fifteen 16 prototype prototype The ratio of the length of the cylindrical part to the diameter of the destroyed diaphragm 0.1 0.5 0.2 0.45 0.5 0.8 Hole area,% of hemisphere area twenty twenty fifteen 55 twenty twenty The orientation angles of the spray holes (from 30 to 90 ° C) 90 90 60 90 thirty thirty Diameter of a hole, mm (from 5 to 20) 5 twenty 10 5 10 10 Extinguishing area, - S ₁ , m ² , const. - H ₁ ,, height, m 1,5 eighteen 21 twenty 21 17 eighteen 2.5 eighteen twenty 19 22 23 23 4.0 fifteen twenty 21 23 eighteen 17

Claims (5)

1. A powder fire extinguishing module, comprising a housing filled with fire extinguishing powder with an exhaust nozzle and a destructible diaphragm, a gas generator located inside the housing, and a hollow jet divider, made in the form of a cylinder that goes into a hemisphere with holes, mounted coaxially with the exhaust nozzle, characterized in that the length the cylindrical part is 0.2-0.45 of the diameter of the destructible diaphragm, the holes are made on the entire surface of the hemisphere or on its part, and the area of the holes is 20-40% of the hemisphere. 2. The powder fire extinguishing module according to claim 1, characterized in that the diaphragm is installed in the exhaust nozzle through the thrust ring. 3. The powder fire extinguishing module according to claim 1, characterized in that the holes in the hemisphere are oriented toward the center of the hemisphere base and are made along the radial axes of the hemisphere with an angle of expansion from 30 to 90 ° relative to the axis of the divider. 4. The powder fire extinguishing module according to claim 1, characterized in that it is mounted. 5. The powder fire extinguishing module according to claim 4, characterized in that the mount is located in the upper part of the housing or on its side surface.