RU177480U1 - POWDER FIRE EXTINGUISHING MODULE - Google Patents

Abstract

The utility model relates to fire fighting equipment, namely to powder fire extinguishing modules (MPF), which can be used to protect industrial, warehouse and domestic premises, as well as for motor and luggage compartments of cars, heavy vehicles, mining equipment and other road vehicles and trailers, where during their operation the fire extinguishing module can be oriented not only vertically but also obliquely. The task to which the proposed device is aimed is to ensure effective This is achieved by the fact that the powder fire extinguishing module containing a hollow body with an extinguishing powder composition, sequentially installed in the neck of the module case, a starting device and an initiating element in contact with a gas-generating charge of the gas generator, to which the tubular chamber is connected in series, openings are made at the output section of the tubular chamber of the generator tia, and a sealing membrane is installed, and an exhaust assembly is made in the side wall of the module housing near the bottom, characterized in that the outlet section of the tubular chamber is additionally equipped with a coaxially mounted cylindrical nozzle made in the form of a cup, the bottom of which tightly closes the open end of the tubular chamber, and the height of the glass overlaps the portion of the chamber with holes with the formation of an annular gap between the walls of the glass and the chamber, while the sealing membrane overlaps the specified gap pa, exhaust assembly is designed as a sleeve, coaxially provided with a discharge nozzle with an opening, whose axes are perpendicular axis of the module. 3 s.p. f-ly, 1 ill.

Description

The utility model relates to fire fighting equipment, namely to powder fire extinguishing modules (MPF), which can be used to protect industrial, warehouse and domestic premises, as well as for motor and luggage compartments of cars, heavy vehicles, mining equipment and other road vehicles and trailers, where during their operation the fire extinguishing module, which is installed on such vehicles, can be oriented not only vertically, but also obliquely.

There is a known extinguishing method (options) and a powder fire extinguishing module for implementing the inventive method according to the patent of the Russian Federation No. 2314135 (IPC A62C 3/00, A62C 35/00, publ. 10.01.2008). The powder fire extinguishing module described in this patent contains a body with a fire extinguishing powder, an element that determines the flow of the gas-powder mixture, bonded to the body cover, a gas generator fixed with the possibility of replacing it in the neck of the bottom of the module body so that its axis of symmetry is parallel to the axis of symmetry of the element determining the flow of the gas-powder mixture, a means for fluidizing the powder with a side surface equipped with perforation, the bore holes of which are blocked by opening schimisya elements. The element that determines the flow of the gas-powder jet is a pipe whose length is commensurate with the vertical size of the internal volume of the module casing. Such a structural embodiment ensures the release of the gas-powder jet vertically upward.

The disadvantages of the known device include the fact that the axis of symmetry of the generator is parallel to the axis of symmetry of the element that determines the flow of the gas-powder mixture, which leads to the creation of stagnant zones in the lower part of the housing, and consequently, an increased mass of powder residue after the module is activated. In an inclined position, the volume of stagnant zones increases. The same drawback is manifested in the horizontal arrangement of the module.

It is known "Device for extinguishing fires" according to the patent of the Russian Federation No. 2158152 (IPC A62C 13/22, publ. 27.10.2000). The device comprises a hollow body with an extinguishing powder composition, a gas generator, including a sequentially mounted starting device mounted on the upper part of the body, an initiating element, a gas generating charge, a sublimating porous interlayer and a tubular mixing chamber with outlet openings in its lower part, and also an outlet product pipe with a valve , the outlet holes are placed on the conical cover of the mixing chamber.

The disadvantages that impede the use of the known device also include the increase in stagnant zones in any position of the module other than the vertical location, and therefore the incomplete release of extinguishing powder from the housing.

A known utility model according to the patent of the Russian Federation No. 135555 "Module of powder fire extinguishing" (IPC A62C 35/00, publ. 04/20/2014). The known module comprises a housing with fire extinguishing powder, a discharge pipe located along the axis of the housing, and a gas generator with a solid fuel charge made in the form of cylindrical channel checkers of all-round combustion, as well as with a disk cooling unit and with a tubular aerator. Outlet openings are made in the cylindrical and end wall of the outlet section of the tubular aerator, overlapped by a sealing membrane in the form of a cap made of aluminum foil with fixation by means of glue.

The disadvantages that prevent the use of the known device include the insufficient completeness of the ejection of the powder when the module is tilted during operation.

The closest technical solution to the claimed on the basis of the essential features and the achieved technical result is the module according to the patent of the Russian Federation No. 135555, which is selected as a prototype.

The task to which the proposed device is aimed is to ensure effective extinguishing with arbitrary orientation of the module in the protected volume in the range from vertical to inclined position.

The proposed device is aimed at achieving a technical result, which is expressed in effective quenching in the protected volume when the axis of the module is oriented at an angle in the range from a vertical position (0 degrees) to a tilt angle of 50 degrees when the axis of the exhaust assembly is directed downward (to the horizon).

The indicated technical result is achieved in that the powder fire extinguishing module comprising a hollow body with an extinguishing powder composition, a starting device and an initiating element in contact with the gas generating charge of the gas generator, to which the tubular chamber is connected in series, in the outlet section of the tubular chamber of the generator holes are made, and a sealing membrane is installed, and an outlet assembly is made in the side wall of the module housing near the bottom a, characterized in that the output section of the tubular chamber is additionally equipped with a coaxially mounted cylindrical nozzle made in the form of a cup, the bottom of which tightly closes the open end of the tubular chamber, and in height the cup overlaps the section of the chamber with holes to form an annular gap between the walls of the cup and chamber wherein the sealing membrane overlaps the specified gap, the exhaust assembly is made in the form of a nozzle coaxially equipped with an exhaust nozzle with an opening, the axes of which, for example They are perpendicular to the axis of the module, a destructible membrane is installed in the nozzle, and a hermetically sealed filling hole is additionally made in the module housing near the neck.

To ensure reliable protection of the connection of the glass and the chamber from the ingress of powder, it is preferable to carry out the sealing membrane from a heat-shrinkable polymer.

The implementation of the convex module bottom contributes to a better result when aeration of the extinguishing powder.

The exhaust unit may be configured to connect a discharge pipe to it for delivering the extinguishing powder to the extinguishing zone.

The powder fire extinguishing module in the specified set of essential features is new and industrially applicable.

The inventive device is illustrated in the drawing.

In FIG. 1 shows a module in section.

The powder fire extinguishing module contains: 1 - housing, 2 - fire extinguishing powder composition, 3 - neck of the module, 4 - starting device, 5 - initiating element, 6 - gas generating charge of the generator, 7 - tubular chamber of the generator, 8 - openings in the outlet section of the tubular chamber generator, 9 - coaxially mounted cylindrical nozzles in the form of a glass, 10 - the bottom of the glass (9) hermetically closes the end of the tubular chamber (7), the glass (9) in height overlaps the section of the chamber (7) with holes (8), forming an 11 - ring gap, 12 - sealing membrane it ensures that the gap (11) is closed, perpendicular to the axis of the module near the bottom, an exhaust assembly is made in the form of an outlet nozzle - 13 with a pine outlet nozzle - 14. In the nozzle (13) 15 is installed — a destructible membrane, and in the case (1) near the neck (3 ) made 16 - hermetically sealed filling hole.

The module is equipped with structural elements located inside the module case through the neck (3), and the extinguishing powder is filled through the hermetically sealed filling hole (16) after the final assembly of the product.

The proposed device operates as follows.

A powder fire extinguishing module installed at a regular place in standby mode does not have excess pressure inside the housing. Permissible deviation of the axis of the housing (1) of the module from 0 deg, to 50 deg, (relative to the vertical position). The operation of the module occurs when voltage is supplied to the circuit of the starting device 4 from the fire extinguishing system. When a current pulse is applied to the starting device 4, the gas-generating charge of the generator 6 is started, and intense gas evolution occurs. The gas passes through a tubular chamber (7), the outlet of which is blocked by the bottom (10) of the glass (9), therefore, gas can only exit through the holes (8) in the lower part of the chamber (7) and enters the gap (11) between the chamber (7) ) and a glass (9). The increasing pressure of the gases leads to rupture (burning) of the sealing membrane 12, made, for example, of a heat-shrinkable polymer. A further increase in pressure promotes aeration of the extinguishing powder (2) in the housing (1) with gases leaving the gap (11). The pressure transferred to the powder (2) leads to the destruction of the membrane (15) of the nozzle (13) along the notches (the membrane bends in the form of petals) and the extinguishing powder composition 2 is supplied through the outlet nozzles (14), into the extinguishing zone or through the outlet mounted on it the directing pipeline to the protected space.

The module is launched forcibly or automatically when the primary signs of fire are detected by the fire extinguishing system.

Climatic modification of the UHL2.1 module according to GOST 15150 for standby temperature from minus 50 ° С to plus 100 ° С.

All tests were in accordance with GOST R 53286-2009.

The module was tested with the removal of time characteristics. The time from the moment the electric pulse was applied to the starting device until the start of the extinguishing of the extinguishing powder composition (speed) from the exhaust assembly was 5 seconds. The duration of the supply of extinguishing powder composition (action time) was 6 seconds.

As a heat-shrinkable polymer for a sealing membrane, a heat-shrinkable tube (TUT) made of cable polyethylene made according to TU 95 1613-01 was used.

Tests of the proposed module was carried out when placing the MPP case in 4 positions:

- vertically (tilt 0 deg.)

- obliquely (at an angle of 15, 30 and 50 degrees from the vertical.) when the axis of the exhaust assembly is oriented downward (towards the horizon).

After the module was triggered (by 3 extinguishing centers), the mass of the extinguishing powder remaining in the housing after operation was determined.

Weighing result:

- at vertical placement of the MPP case - the rest - 5%; all foci are extinguished.

- with a slope of 15 degrees. - the remainder is 7%; all foci are extinguished.

- with a slope of 30 degrees, - the balance is 9%; all foci are extinguished.

- at an inclination of 50 degrees. - the remainder is 13%. all foci are extinguished.

Additionally, tests were carried out with an inclination of the axis of the MPP case of 60 and 70 degrees.

Test Result:

- at 60 degrees. - the remainder is more than 15%; 2 out of 3 foci extinguished.

- at 70 degrees. Powder aeration is not observed. The foci are not extinguished.

For each test, 3 experiments were carried out, the quantitative result given is the average for each of the 3 experiments.

Tests of the MPP prototype, carried out under the same conditions, showed that when the module deviates from the vertical position by at least 15 degrees, the reliability of extinguishing a fire is approximately 70% (extinguishing 2 out of 3 fires), and the remainder of the powder in the housing after response is more than 15%.

Using the entire set of essential features of the proposed module provides high extinguishing efficiency due to the completeness of the ejection of the extinguishing powder, both when the axis of the MPP case is vertical and inclined. The smaller the powder residue after operation, the higher the extinguishing efficiency.

Thus, the proposed MPP is aimed at solving the problem and, when used, ensures the achievement of the specified technical result.

Claims (4)

1. A powder fire extinguishing module, comprising a hollow body with an extinguishing powder composition, a starting device and an initiating element in series with the gas generating charge of the gas generator, to which the tubular chamber is connected in series, openings are made in the throat of the generator chamber, and holes are made and installed a sealing membrane, and in the side wall of the module housing near the bottom there is an exhaust assembly, characterized in that the outlet section is tubular Amer is additionally equipped with a coaxially mounted cylindrical nozzle made in the form of a glass, the bottom of which tightly closes the open end of the tubular chamber, and in height the glass overlaps the section of the chamber with holes to form an annular gap between the walls of the glass and the chamber, while the sealing membrane overlaps the specified gap, the outlet assembly is made in the form of a nozzle coaxially equipped with an outlet nozzle with an opening, the axes of which are directed perpendicular to the axis of the module; a destructible membrane is introduced, and in the module case near the neck an additionally made hermetically sealed filling hole is made. 2. The device according to p. 1, characterized in that the sealing membrane is made of heat-shrinkable polymer. 3. The device according to claim 1, characterized in that the bottom of the module is convex. 4. The device according to p. 1, characterized in that the exhaust unit is made with the possibility of connection with the pipeline.

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