RU2532726C1 - Fire-extinguishing system with deluge sprinkler - Google Patents

Abstract

FIELD: fire safety.

SUBSTANCE: in fire-extinguishing system with deluge sprinkler, consisting of network of main and distribution pipelines, constantly filled with liquid fire-extinguishing agent, with the deluge sprinklers, as well as containing a source of water supply, which is a water tank and a water intake system with a filter and a pump, and two automatic water feeders, and in the main supply pipeline a warning turbine is mounted, the deluge sprinkler comprises a housing with a screw coaxially located in the lower part of the housing, and a fitting located in the upper part of the housing with the cylindrical opening for supplying liquid, connected with a diffuser, axiosymmetrical to the housing and the fitting, and the screw is pressed into the housing to form a cylindrical chamber located above the screw coaxially to the diffuser and connected to it in series, and the screw is provided with a central orifice, and the outer surface of the screw is at least single-start helical groove and is located inside the housing, and the outlet of the helical groove is connected to the outlet conical chamber, which end is fastened to the plate atomizer, which consists of the screw perpendicular to the axis and parallel to each other, at least two plates, one of which, the first plate has a central opening which diameter is equal to the diameter of the larger of the openings of the outlet conical chamber, and the second plate is made continuous and fixed to the first by means of at least three fasteners comprising a screw, a nut and a placement shim placed between the plates and operating as the regulating link controlling the gap.

EFFECT: improving efficiency of fire-extinguishing through the introduction of high-speed elements in the overall chain of automatic fire-extinguishing system.

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Description

The invention relates to fire fighting equipment.

The closest object to the claimed technical essence is a fire extinguishing device containing a housing and a distribution sleeve with holes, one of which is made in the form of a slit mounted for rotation relative to the housing. Using the rotation of the casing, one of the holes is installed opposite the outlet of the housing, providing the required mode of supply of the extinguishing fluid to the fire site (RF patent No. 2409426, A62C 31/02 - prototype).

The disadvantage of the prototype is the inability to create an optimal flow structure during the formation of film curtains of great length, due to the large turbulization of the flow at the exit of the slit hole and violation of the continuity of the stream as the flow of the outflowing fluid from the said hole.

EFFECT: increased fire extinguishing efficiency due to the introduction of high-speed elements in the general circuit of an automatic fire extinguishing system.

This is achieved by the fact that in a fire extinguishing system with a deluge sprinkler, consisting of a network of trunk and distribution pipelines, constantly filled with liquid fire extinguishing composition, with deluge sprinklers, it also contains a water supply source, which is a water tank and a water intake system with a filter and a pump, and two automatic water feeders, and a signal turbine is installed in the main supply line, the deluge sprinkler contains a housing with a screw coaxially located in the lower part of the housing, and a fitting placed in the upper part of the housing with a cylindrical hole for supplying fluid connected to the diffuser, axisymmetric to the housing and the fitting, while the screw is pressed into the housing to form a cylindrical chamber located above the screw, coaxial to the diffuser, and connected to it in series, the screw being made with a central throttle aperture, and the outer surface of the screw is at least a single-pass helical groove and is located inside the housing, and the output of the helical groove is connected to the output a conical chamber, to the end of which a plate sprayer is attached, which consists of at least two plates perpendicular to the axis of the screw and parallel to each other, one of which, the first plate, has a central hole whose diameter is equal to the diameter of the larger of the openings of the outlet conical chamber, and the second plate is solid and is attached to the first by at least three fasteners, including a screw, nut, and spacing calibrated washer installed between the plates and you the complementary function of the control link controlling the gap.

Figure 1 presents a diagram of the deluge fire extinguishing system, figure 2 is a diagram of the deluge sprinkler.

The deluge fire extinguishing system (Fig. 1) consists of a network of trunk 8 and distribution 6 pipelines, constantly filled with a liquid extinguishing agent, with sprinklers (deluge heads 7) and is designed for local extinguishing and localization of the fire source in the room. The system consists of a water supply source, which is a tank 1 with water and a water intake system with a filter and pump 2. For the smooth and reliable operation of the main supply main network 8, the device has two automatic water feeders 3 (pneumatic tank) and 4 (water tank). A secondary highway 5 with rows of distribution pipelines 6 equipped with deluge heads 7 originates from the main network along the production premises of the building. A signal turbine 9 is installed in the main supply line.

The deluge sprinkler comprises a housing (Fig. 2) 10 with a screw 16 coaxially located in the lower part of the housing, and a nozzle 11 located in the upper part of the housing with a cylindrical hole 12 for supplying fluid connected to the diffuser 13, an axisymmetric housing 10 and the nozzle 11. For the tight connection of the housing 10 with the fitting 11 is provided with a sealing gasket 14. The screw 16 is pressed into the housing with the formation of a cylindrical chamber 15 located above the screw 16, coaxially to the diffuser 13, which is connected in series with it. The screw 16 is made with a Central throttle hole 18, and the outer surface of the screw 16 is at least a single-pass screw groove 17 with right or left thread and is located inside the housing 10, and the output of the screw groove 17 is connected to the output conical chamber 19, to the end which is attached plate sprayer. The nozzle screw 16 is made of solid materials: tungsten carbide, ruby, sapphire.

The plate spray consists of at least two plates perpendicular to the axis of the screw 16 and parallel to each other, one of which, the first plate 20, has a central hole, the diameter of which is equal to the diameter of the larger of the openings of the outlet conical chamber 19, and the second plate 21 is made continuous and attached to the first by means of at least three fasteners 23, including a screw, a nut, and a calibrated washer 22 installed between the plates 20 and 21 and performing the function of a control link, ulation gap.

Drench fire extinguishing system operates as follows.

In the production building, a system is installed consisting of a water supply source, which is a tank 1 with water and a water intake system with a filter and pump 2. Then, a network of trunk 8 and distribution 6 pipelines is mounted, on which deluge sprinklers 7 are fixed and the network is constantly filled with liquid extinguishing agent designed for local extinguishing and localization of the fire in the room.

For uninterrupted and reliable operation of the main supply main network 8, two automatic water feeders 3 (pneumatic tank) and 4 (water tank) are installed in the device. The main network 8 is connected to the secondary line 5 with rows of distribution pipelines 6 equipped with deluge sprinklers 7, and a signal turbine 9 is installed in the main supply line 8.

When the temperature rises during a fire in a production building, a fire detector or other automatic fire warning device (not shown) is triggered, which starts automatic water feeders 3. It is possible to start from a fire station by a signal received by a warning signal system.

Drain irrigation works as follows.

The liquid is supplied through a cylindrical hole 12 to the diffuser 13, and from it to the conical chamber 15, from which it pressurizes into the screw outer cavity of the screw 16 and through the throttle hole 18 to the conical chamber 19, and from it to the spray gun. A rotating fluid flow in the external screw cavity of the screw forms a vortex movement, in this case additional crushing of liquid droplets occurs due to turbulence of the outlet flow, and a finely dispersed rotating flow exits the nozzle with a wide rotating torch of the sprayed liquid (solution).

Instead of water, a foaming agent solution may be used as a fire extinguishing agent. Drenchers are placed on distribution pipelines (not shown in the drawing) under the ceiling of the room from the condition of irrigation with one drencher 9 ÷ 12 m ² of floor area. It is possible to use with the following types of extinguishing agent: water, aqueous solutions, foam. The multiplicity of the foam is 13.2%, the concentration is 3%. As a foaming agent in such fire extinguishing systems, a fluorosynthetic foaming agent of the type "Multipena" or a 6% aqueous solution of fluorinated foaming agent "Sublayer" is used under conditions of smoke in the room.

According to the direction of flow of the extinguishing agent, the dealers are concentric, they spray a hemispherical shape, they can be performed without coating (bronze) and coated (chrome or white).

Claims (1)

A fire extinguishing system with a deluge sprinkler, consisting of a network of trunk and distribution pipelines, constantly filled with liquid fire extinguishing composition, with deluge sprinklers, and also containing a water supply source, which is a water tank and a water intake system with a filter and a pump, and two automatic water feeders, and in A signal turbine is installed in the main supply line, characterized in that the deluge sprinkler comprises a housing with a screw coaxially located in the lower part of the housing and a fitting located in the upper part of the body with a cylindrical hole for supplying fluid connected to the diffuser, axisymmetric to the body and the fitting, while the screw is pressed into the body to form a cylindrical chamber located above the screw, coaxial to the diffuser, and connected to it in series, the screw being made with the central throttle hole, and the outer surface of the screw is at least a single-pass helical groove and is located inside the housing, and the output of the helical groove is connected to the output to a conical chamber, to the end of which a plate sprayer is attached, which consists of at least two plates perpendicular to the axis of the screw and parallel to each other, one of which, the first plate, has a central hole whose diameter is equal to the diameter of the larger of the openings of the outlet conical chamber, and the second plate is solid and attached to the first by at least three fasteners, including a screw, nut, and spacing calibrated washer installed between the plates and The increasing function of the control link that controls the gap.

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