RU21145U1 - SYSTEM OF UNDERSTANDING FIRE EXTINGUISHING OF THE RESERVOIR PARK WITH OIL AND OIL PRODUCTS - Google Patents

Description

The utility model relates to the field of fire fighting equipment, in particular, to fire extinguishing systems of a fleet of tanks with combustible liquids.

A device for extinguishing a fire in reservoirs with a combustible liquid is known, comprising a pipeline for delivering a foaming agent solution from a container, a foam generator, trunks for supplying air foam of different multiplicity to the combustion site, and a unit for moving the pipeline with trunks in a vertical plane along the tank wall (see A .С. USSR No. 1560236, class A 62 C 3/00 from 1988). Foam of low, medium and high multiplicity is fed from the trunks through an open hole in the wall of the tank at the level of the burning surface, thereby ensuring foam to spread over the burning surface.

However, the known device is unreliable in operation, since when supplying foam from above to the burning surface, destruction of the roof of the tank and the foam generator installed in the upper zone of the tank can occur.

A device for extinguishing fires of oil and oil products in tanks, containing a piping system, fire pumps, a foaming unit, including containers for water and a foaming agent, a distribution pipe, a foaming pump, a foaming agent dispenser, a foam generator and a unit for

reuse of foam deposited on the bottom of the tank (see AS USSR No. 1797918, class A 62 C 3/06 of 1990).

The disadvantages of the known device are the low efficiency of fire extinguishing due to the supply of foam to the burning surface from above, as well as insufficient cooling of the tank itself during combustion, since the fire is extinguished only by foam. In addition, this device is designed to autonomously extinguish a fire in only one tank with oil. To use such a device when extinguishing a fleet of tanks with combustible liquid, it is necessary to build a common annular pipeline for the passage of a foaming solution through it. The implementation of an annular mortar pipeline requires a large expenditure of the foaming agent, material and labor costs for the construction and maintenance of the appropriate pressure of the foaming agent solution in the pipeline, its periodic mixing, replacement, and protecting the pipeline from corrosion. In addition, leakage of the foaming agent solution from a long pipeline is not excluded, which can lead to environmental pollution.

The technical problem to which the proposed technical solution is directed is to ensure the efficiency and reliability of fire extinguishing of the tank farm with oil and oil products through the formation of autonomous lines for supplying foam and water to the tank and their optimal placement in the tank farm while reducing the length and metal consumption of the fire extinguishing piping system and ensuring the automatic process of extinguishing the tank farm.

fire extinguishing a tank farm with oil and oil products containing a piping system, fire pumps and a foaming agent assembly, including a foaming agent container, which is connected by a pipeline with a foaming agent dispenser to the foam generator, the output of which through the foam inlet assembly is connected to the reservoir, that the piping system is made in the form of an annular water supply with irrigation pipelines and in the form of dry-tube foam pipelines with nodes for introducing foam into the reservoir, each reservoir k has an autonomous foam generator station, which includes valves, consisting of a system of electric and mechanical valves, a foaming unit, containing a container for the foaming agent and at least two foam dispenser and two low-foam foam generators connected with it, the output of each foam generator is connected the corresponding dry-pipe foam through electric valves with a node for introducing foam into the tank, and these nodes are introduced into each tank from the bottom against opolozhnyh sides and piping irrigation with sprinklers placed in each tank in its upper zone, with electric valves mounted on the respective penoprovodah and mechanical valves - on the respective irrigation pipes.

A foam generator station may contain two, four or six low-frequency foam generators; the number of generators is determined by the number of tanks protected from fire in the park.

As a foaming agent of low multiplicity can be used a foaming agent brand "STAMEX AFFF 6% or other similar.

associated with a ring water supply.

Thanks to the constructive implementation of the fire extinguishing system, in which instead of an annular constantly filled solution pipe under pressure it was proposed to introduce autonomous foam-generating stations with autonomous foam and water supply pipelines into each tank of the park, it became possible to carry out sub-layer fire extinguishing of the entire tank farm, or individual tanks in the park, and carry out this process automatically. Due to the formation of autonomous lines for supplying foam and water to tanks, and low-foam foam is fed from below under the oil layer, and water is supplied to the upper zone of the tank, the reliability and efficiency of fire fighting is ensured. The introduction of shut-off valves into the system and the corresponding connection of valves to the corresponding foam and irrigation pipelines allows you to automate the fire fighting process.

The proposed system of sublayer fire fighting of a tank farm is shown in the drawing.

The fire extinguishing system contains a circular fire-fighting water pipe 3, fire pumps 4, a foam generator station 5 with a foaming agent assembly 6 and a shut-off valve system consisting of 7 electric and 8 mechanical valves, and a dry-pipe foam pipe, located around the perimeter of the park 1 protected from fire 9.

The foaming unit 6 contains a container 10c with a foaming agent, which is connected by pipelines 11c to the gate valves 8, foaming pumps 12 and dispensers 13 to low-foam foam generators 14. The foaming agent assembly 6 comprises at least two foaming agent dispensers 13 and two

foam generator 14. The number of foam generators 14 and foam conduits 9 may be equal to two, four, six; their number is determined by the number of reservoirs 2 in the park 1. The output of each foam generator 14 is connected by a corresponding dry-tube foam conduit 9 through an electric gate 7 to a foam input unit 15 into the tank 2, and these input nodes 15 are introduced into each tank 2 from below from below on a layer from opposite sides. The dispensers 13 of the foaming agent assembly 6 are connected through the electric valves 7 of the foam generator station to the ring fire water pipe 3. Irrigation pipelines 16 with irrigators 17 are placed on each tank 2 on its upper belt. Irrigation pipelines 16 through mechanical valves 8 of the foam generating station 5 are connected to the fire ring water supply 3.

As a foaming agent of low multiplicity, a foaming agent of the STAMEX AFFF 6% brand or any similar one can be used.

The system may further comprise water tanks 18 connected through shut-off valves 8 to fire pumps 4, which take water from these fire tanks 18 and feed it into the ring water supply system 3.

The sublayer fire extinguishing system of the tank farm operates as follows.

At the signal of the fire detectors of the fleet 1 of the tank 2 protected from fire, the fire pumps 4 of the water supply to the ring fire pipe system 3 are switched on. Water from the pipe 3 is piped to an autonomous foam-generating station 5. At the same time, pumps 12 of the foaming agent 13 dispenser in the tank are turned on 10. In the node 6 of the foaming agent with open electric valves 7 on the lines of the foaming agent and with open mechanical valves 8 on the lines

water supply a foaming solution is formed. The amount of foaming agent is dosed by the balance dispenser 13. The finished solution of the foaming agent is supplied to the foam generators 14 to obtain a foam of low multiplicity. The finished foam in the required volume through the foam 9 is fed from below under the oil layer in the protected

reservoir 2. At the same time, through pipelines 16, water from the fire water supply 3 with open electric valves 7 enters the reservoir 2 from above into the irrigation ring 17 and cools the burning object. In the event of a fire in the park of several tanks, the process of metered foaming, the production of low-foam foam and the distribution of water and foam along autonomous lines is carried out automatically and simultaneously for each tank 2 in each park 1.

The use of these fire extinguishing systems significantly increases the reliability and efficiency of eliminating possible fires in tank farms with oil and oil products, reduces the length and overall metal consumption of the fire extinguishing piping system, and reduces the cost of operating fire extinguishing systems.

July 16, 2001

USEFUL MODEL FORMULA

1. A sub-layer fire extinguishing system for a tank farm with oil and oil products, comprising a piping system, fire pumps and a foaming unit, including a foaming unit, which is connected to a foam generator through a pipeline with a foaming agent dispenser connected to the reservoir through the foam input unit CHARACTERIZED by the fact that the piping system is made in the form of an annular water supply with irrigation pipelines and dry-tube foam pipelines with nodes for introducing foam into the tank, each tank farm has an autonomous foam generator station, which includes stop valves consisting of a system of electric and mechanical valves, a foaming unit, containing a container for the foaming agent and at least two foam dispenser and two low-foam foam generators connected by pipelines, each output the foam generator is connected by a corresponding dry pipe foam line through electric valves to the foam inlet node into the reservoir, and these nodes are brought into each the reservoir is from below on opposite sides, and irrigation pipelines with sprinklers are located on each reservoir in its upper zone, while the electric valves are installed on the corresponding foam pipes, and the mechanical valves on the corresponding irrigation pipes.

2. The fire extinguishing system according to claim 1, characterized in that the foam generator station contains two, four or six generators of foam of low multiplicity, the number of generators is determined by the number of tanks protected from the fire in the park.

3. The fire extinguishing system according to claim 1, characterized in that a STAMEX AFFF 6% foaming agent is used as a foaming agent of low multiplicity.

4. The fire extinguishing system according to claim 1, characterized in that the system further comprises water tanks connected through shut-off valves to the fire pumps and connected to the ring water supply.

July 16, 2001

Claims (4)

1. A sub-layer fire extinguishing system of a tank farm with oil and oil products, comprising a piping system, fire pumps and a foaming unit, including a foaming unit, which is connected to a foam generator through a pipeline with a foaming agent dispenser, the output of which is connected to the tank through the foam input unit, which differs the fact that the piping system is made in the form of an annular water supply with irrigation pipelines and dry-tube foam pipelines with nodes for introducing foam into the tank, while each tank farm has an autonomous foam generator station, which includes stop valves consisting of a system of electric and mechanical valves, a foaming unit, containing a container for the foaming agent and at least two foam dispenser and two low-foam foam generators connected by pipelines, each output the foam generator is connected by a corresponding dry pipe foam line through electric valves to the foam injection unit into the reservoir, and these nodes are brought into each ezervuar bottom at opposite sides, with the irrigation pipes and sprinklers placed in each tank at its upper zone, the electric valves installed on respective penoprovodah and mechanical valves - on respective irrigation pipes.  2. The fire extinguishing system according to claim 1, characterized in that the foam station contains two, four or six generators of foam of low multiplicity, the number of generators is determined by the number of tanks protected from the fire in the park.  3. The fire extinguishing system according to claim 1, characterized in that as a foaming agent of low multiplicity, a foaming agent of the brand "STAMEX AFFF" 6% is used. 4. The fire extinguishing system according to claim 1, characterized in that the system further comprises water tanks connected through shut-off valves to the fire pumps and connected to the annular water supply.