RU2502535C1 - Sprinkler fire-extinguishing installation - Google Patents

Abstract

FIELD: fire prevention facilities.

SUBSTANCE: invention relates to fire-fighting equipment. At that the sprinkler fire-extinguishing installation comprises of a water-supply source, a network of main and distribution pipelines with sprinkler heads, it additionally comprises the main water feeder with the filter placed into the source and connected to the main pipeline, and a charge circuit mounted in parallel to the line of the main water feeder and comprising the pipeline of charge of the support water feeder, and the support (automatic) water feeder, and the control-signal system comprises the control-signal valve and the signal device, such as a sound horn. At that the main pipeline is connected to the network of distribution pipelines, in which the sprinkler heads are mounted. At that the sprinkler head housing is made in the form of a fitting with a through hole and a threaded part, at that in the through hole of the fitting a sleeve is located with a filter mesh fastened to it, at that the threaded fitting by the axisymmetric bracket. At that consisting of two vertical volumetric reinforcement ribs and rigidly connected with them two inclined prismatic ribs it is rigidly connected to a hollow cylindrical sleeve with an internal thread interacting with the clamping screw, which presses through the flexible gasket the glass flask to the poppet valve, at that the glass flask rests on the valve through the flexible gasket. At that it is attached to the outer end surface of the valve, which is connected through a chain to one of the volumetric reinforcement ribs and on the other side to the sleeve perpendicularly to its axis, the spray device is screwed in the form of a socket with the central outlet and the lobes located relative to each other with the gap.

EFFECT: invention is aimed at improving the effectiveness of fire-fighting due to 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 openings is installed opposite the outlet of the housing, providing the required mode of supply of the extinguishing fluid to the fire (French patent No. 2309283, B05B 1/20, 1976 - 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 the sprinkler fire extinguishing installation, consisting of a water supply source, a network of main and distribution pipelines with sprinkler heads, it additionally contains a main water supply with a filter lowered into the source and connected to the main pipe, and a recharge system installed parallel to the main line water supply and the auxiliary water supply feeding pipeline including an auxiliary (automatic) water supply, and an alarm system The system includes a control and signal valve and an alarm device, for example, in the form of an audible siren, while the main pipeline is connected to a network of distribution pipelines in which sprinkler heads are mounted, the body of the sprinkler head is made in the form of a fitting with a through hole and a threaded part, and a through hole of the nozzle accommodates a sleeve with a filter screen fixed to it, while the threaded nozzle by means of an axisymmetric bracket consisting of two vertical volumetric A stiffener and rigidly connected two inclined prismatic ribs are rigidly connected to a hollow cylindrical sleeve with an internal thread interacting with a clamping screw, which presses the glass flask through the elastic gasket to the poppet valve, while the glass bulb rests on the valve through the elastic gasket, fixed on the outer end surface of the valve, which is connected through a chain to one of the three-dimensional stiffeners, and on the other hand to the sleeve, perpendicular to its axis, is attached with screws s spraying device in the form of a socket with a central bore and petals arranged relative to each other with a gap.

Figure 1 presents a diagram of a sprinkler fire extinguishing installation, figure 2 is a diagram of a sprinkler head.

The sprinkler fire extinguishing installation (Fig. 1) consists of a water supply source 1, a main water supply 2 with a filter lowered into the source, and connected to a main pipeline 7, a recharge system installed parallel to the main water supply line 2 and including a secondary water supply line 3 and auxiliary (automatic) water supply 4. The control-signal system includes a control-signal valve 5 and a signal device 6, for example, in the form of an audible siren. The main pipeline 7 is connected to a network of distribution pipelines 9 in which sprinkler heads 8 are mounted.

The network of main 7 and distribution 9 water pipes is located under the ceiling of the building and is filled with water under pressure created by automatic water supply 4 (water supply, water tank or hydropneumatic installation), capable of supplying at least 10 l / s for 10 min. Since this amount of water to extinguish the fire may not be enough, the main water supply unit 2 (pump, water supply or spare tank) is usually placed in the installation, which should provide a water flow rate of at least 30 l / s for 1 hour.

The sprinkler head (Fig. 2) comprises a housing made in the form of a fitting 10 with a through hole and a threaded part (external thread — by means of a threaded part, the sprinkler is mounted on distribution pipelines). In the through hole of the fitting 10 is a sleeve 20 with a filter screen 21 fixed to it.

The threaded fitting 10 by means of an axisymmetric bracket consisting of two vertical volumetric stiffening ribs 12 and rigidly connected two inclined prismatic ribs 22 is rigidly connected to the hollow cylindrical sleeve 11 with an internal thread interacting with the clamping screw 15, which compresses through the elastic gasket 14 the glass flask 13 to the poppet valve 17. The glass flask 13 rests on the valve 17 through an elastic gasket 16 fixed to the outer end surface of the valve 17, which in turn abuts valve seat 18 through an elastic gasket. The poppet valve 17 is connected through a chain 19 to one of the three-dimensional stiffening ribs 12, which allows 11 to recharge the sprinkler sprinkler, since the valve remains on the sprinkler after operation.

On the other hand, to the sleeve 11, perpendicular to its axis, a spray device 13 in the form of a socket with a central hole 25 and petals (not shown in the drawing) located relative to each other with a gap is attached with screws 14.

Sprinkler fire extinguishing system operates as follows.

Sprinkler heads are screwed into the distribution pipe 9 every 3 ... 4 m, which makes it possible to irrigate one sprinkler depending on the design and diameter of the through-hole 6 ... 36 m ^{2 of} the floor area of the room. In unheated rooms with an air temperature of 0 ° C and below, water-air sprinkler systems are used, filled with water only up to the control and alarm valves 5, after which compressed air is located in pipelines with sprinklers. When opening the heads 8, air first leaves, and then water begins to flow.

Glass bulb 13 is an element of automatic response to exceeding a predetermined room temperature, which is made in the form of a glass bulb 13 with a diameter of 5 mm, which is a thermal lock. Depending on the operating temperature, the liquid in the flask has a certain color: 68 ° C - red, 57 ° C - orange. The response temperature is selected depending on the category of protected premises. In the event that a thermosensitive element - flask - is removed from the proposed sprinkler, it automatically becomes a deluge sprinkler.

If the temperature rises during a fire in a production building, the heat-sensitive element (thermal lock) - bulb 15 (at a response temperature of 68 ° C - red, or 57 ° C - orange) breaks and a fire extinguishing agent is ejected through poppet valve 17, sprayed using a spray sockets 19 with petals 20, it enters the fire. 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 "Multipena" type is used. It also works on a 6% - aqueous solution of fluorinated foam former "Sublayer" in the conditions of smoke in the room.

Sprinkler sprinklers can be used in water and water-air sprinkler systems, as well as in deluge systems. Flow coefficient: for sprinklers with a flat / concave outlet - 80. This coefficient is calculated by the formula Q = K · √p, where K = 80, P is the pressure in front of the sprinkler (atm.), Q is the flow rate through the sprinkler (l / min) . The operating pressure of the system is 12.3 atm. Each sprinkler sprinkler should be tested at the factory at a pressure of 25 atm.

Claims (1)

A sprinkler fire extinguishing installation, consisting of a water supply source, a network of main and distribution pipelines with sprinkler heads, it further comprises a main water supply with a filter lowered into the source and connected to the main pipeline, and a recharge system installed parallel to the main water supply line and including a pipeline auxiliary water supply and auxiliary (automatic) water supply, and the control-signal system includes a counter flax-signal valve and signal device, for example in the form of an audible siren, while the main pipeline is connected to a network of distribution pipelines in which sprinkler heads are mounted, characterized in that the body of the sprinkler head is made in the form of a fitting with a through hole and a threaded part, and a through hole of the nozzle accommodates a sleeve with a filter screen fixed to it, while the threaded nozzle is provided with an axisymmetric bracket consisting of two vertical volumetric ribs stiffness and two tilted prismatic ribs rigidly connected with them is rigidly connected to the hollow cylindrical sleeve with an internal thread interacting with a clamping screw, which, through the elastic gasket, compresses the glass flask to the poppet valve, while the glass flask rests on the valve through an elastic gasket mounted on the outer the end surface of the valve, which is connected through a chain to one of the three-dimensional stiffeners, and on the other hand to the sleeve, perpendicular to its axis, is attached with screws a dusting device in the form of a socket with a central hole and petals located relative to each other with a gap.

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