RU71264U1 - DEVICE FOR STORING A FOAM FORMER AND ITS PROPORTIONAL MIXING WITH WATER WHEN FIRE EXTINGUISHING - Google Patents

Abstract

A device for storing a foaming agent and its proportional mixing with water during fire fighting is designed to prepare an aqueous solution of a foaming agent of a certain concentration immediately before being fed to the fire extinguishing system installed in a tank with oil or oil products, in the premises of oil pumping stations, aircraft hangars, etc. Foaming agent from tanks (1, 2) is fed into mixer (6) along line (15) and water from another source (not shown in the figures), and at the outlet of mixer (6) an aqueous solution of foaming agent of a certain concentration is obtained. A membrane (3) is installed inside two tanks (1, 2), dividing the tanks (1, 2) into compartments: for water (5) and a foaming agent (6). Water supplied to the mixer (6) partially passes into it, and partially enters the tanks (1, 2) along line (10), displacing the foaming agent through the membrane (3) into line (15). A calibration diaphragm of the foaming agent (16) is installed on line (15). The diameter of the metering opening of the diaphragm (16) determines the concentration of the foaming agent in the aqueous solution. The ends of the water lines (10) and the foaming agent (15) attached to the tanks (1, 2) are made in the form of ruins, parts of each of which are mirror-like. Due to this, when switching the device from the mode of simultaneous operation of the tanks to the mode of single operation of the tank (1) or (2), it is not necessary to change the diameter of the calibration diaphragm of the foaming agent (16) to maintain a constant concentration of the foaming agent in one solution.

3 ill.

Description

The utility model relates to mixing liquid with liquid in a constant proportion regardless of the flow rate of the final mixing product and can be used to prepare an aqueous solution of a foaming agent of a certain concentration immediately before being fed to the fire extinguishing system installed in a tank with oil or oil products, in rooms of oil pumping stations, and aircraft hangars etc.

A device for storing a foaming agent and its proportional mixing with water during fire fighting, which is manufactured by Sabo Espanola, Spain, model MXC-I-2X (Catalog of the company Sabo Espanola, Barcelona, Spain, pp.16-17, 01.21.2004, cm.

Also http://www.sabo-esp.com/contraincendios2005/escontraincendios/prod_esp/mxc-i-2x.html) And which is manufactured by Fabbrica apparecchiature anticendio, Italy (www.fasspa.net), model Fx2 and model FIx2 ( http://www.fasspa.net/schede%20tecniche/Premescolatori%20pdf/SCHEDAtecnicaPremFX2.pdf) (http://www.fasspa.net/schede%20tecniche/Premescolatori%20pdf/SCHEDAtecnicaPremFIx2.pdf) (http: // www.ptv-centre.ru/content/view/68/92/)

The device contains two tanks. In each tank there is a membrane dividing the internal cavity of the tank into a compartment for a foaming agent and a compartment for water supplied to the tank during fire fighting.

The device also includes a mixer in the form of a container with an inlet for supplying water and an outlet for an aqueous solution of a foaming agent. A water dispenser is installed inside the mixer.

The water supply line to the tanks is connected at one end to the mixer to the water dispenser in the direction of flow in the mixer, and the other end of this line is a cleft, parts of which are connected

one to the water compartment of each tank. The parts of the delineation of the water supply line are not equal in length and configuration.

A line of water displaced from the foaming agent tanks is connected at one end to the mixer after the water dispenser in the direction of flow in the mixer. At this end of the line is the calibration diaphragm of the blowing agent. The other end of the line is a cleft, parts of which are attached one at a time to the frother compartment of each tank. Parts of the crease of the line of the foaming agent are not equal in length and configuration.

Water is supplied to the inlet of the mixer of the device. Water partially passes through the water dispenser, and partially enters the water supply line through the corresponding part of the fork in the tank. At the same time, the stop valves on the other part of the fork are in the “closed” position, hermetically blocking this part and preventing the passage of water. As the amount of water in the tank increases, its pressure increases through the membrane to the foaming agent. The foaming agent is displaced by the water from the tank along the line connected to the mixer after the water dispenser. Moreover, the foaming agent first comes from the compartment for the foaming agent to the part of the fork connected to the tank. The other part of the crumple attached to the compartment for the foaming agent of the reserve, non-working tank is hermetically closed by shut-off valves. Then the foaming agent enters the mixer through the line of the foaming agent through the calibration diaphragm. The diameter of the hole of the calibration diaphragm of the foaming agent provides the desired concentration of the foaming agent in the aqueous solution. The mixer mixes the water passed through the water dispenser and the foaming agent displaced by the water from the tank and passed through the calibration diaphragm. Through the mixer outlet, the resulting foaming agent aqueous solution of a predetermined concentration

enters the fire extinguishing installation (foam generator, hydraulic monitor, etc.)

The operational mode of the device described above for storing the foaming agent and its proportional mixing with water during fire fighting involves the simultaneous inclusion of each of the tanks. One tank is considered the main, and the second reserve.

When the foaming agent is completely consumed in the main tank, part of the crossings of the water supply line and part of the crossings of the foam line connected to the main tank are hermetically sealed with shutoff valves and the parts of the crossings leading to the reserve tank are opened. As a result, the main tank is taken out of operation, and the reserve tank is turned on.

The alternate inclusion of the tanks in the work allows you to re-fill the empty tank with the foaming agent, the contents of which are expended during operation, while the other tank filled with the foaming agent is involved in dosing, or to inspect and repair the tank.

This device is taken as the closest analogue to the claimed utility model.

To ensure a large flow rate of the foaming agent aqueous solution, there is a need for simultaneous operation of the tanks with the possibility of shutting off one of the tanks for inspection and repair. Since the parts of the deformations of the water supply line and the foaming line are of different lengths and configurations, the hydraulic losses in each part of the deformations are different. A situation may arise when it is necessary to turn off the tank, the lines of which have less hydraulic losses, and the tank with large hydraulic losses in the lines will remain in operation. At the same time, at the inlet of the foaming agent into the calibration diaphragm, the pressure of the foaming agent and, therefore, its consumption will be less than with a single operation of the tank with less hydraulic loss in it

lines or with the simultaneous operation of tanks. (With simultaneous operation of the tanks, the flow rate at the inlet to the foaming agent calibration diaphragm is determined by the passage of water and the foaming agent in lines with less hydraulic loss).

As a result, a smaller amount of foaming agent passes through the calibration diaphragm of the foaming agent over the same period of time, and the concentration of the foaming agent becomes lower than the desired value. Therefore, during single operation of the tank, in the lines of which the hydraulic losses are higher, it is necessary to replace the existing calibration diaphragm with a calibration diaphragm with a metering hole of a larger diameter. The need to change the calibration diaphragm of the blowing agent when changing the operating mode of the device with the simultaneous operation of the tanks for a single tank operation, in the lines of which the hydraulic losses are higher, is the disadvantage of this device, making the device less convenient to operate and maintain.

The objective of the utility model is to create a device for storing a foaming agent and mixing it proportionally with water during fire fighting, in which the tanks must work both simultaneously and individually with the same calibration diaphragm of the foaming agent with the same diameter of its dispensing opening.

The technical result consists in ensuring equal hydraulic losses in the parts of the fork of the water line, as well as equal hydraulic losses in the parts of the foam line due to the structural design of these parts.

Like the closest analogue, a device for storing a foaming agent and mixing it proportionally with water during fire fighting contains at least two tanks, each of which has a membrane dividing the internal cavity of each

a tank to the frother compartment and a compartment for water supplied to the tank during fire fighting, a mixer in the form of a container with an inlet for water supply, an outlet for an aqueous solution of a foaming agent and a water dispenser installed inside, a water supply line to the tanks connected at one end to mixer to the water dispenser in the direction of flow in the mixer, with the other end made in the form of a cleft, parts of which are connected one at a time to the water compartment of each tank and are equipped with shutoff valves, a line displaced by water from of foaming agent, one end of which with the calibration diaphragm of the foaming agent installed on it is connected to the mixer after the water dispenser in the direction of flow in the mixer, and the other end is made in the form of a fork, parts of which are connected one to the foam generator compartment of each tank and are equipped with shutoff valves.

In contrast to the closest analogue of the part of the delineation of the water supply line, as well as the parts of the delineation of the line displaced by water from the foaming agent tanks, are made in the form of bodies that are mirror-equal to each other.

In figures 1, 2 and 3 respectively depict the following types of the claimed device: front, left and top.

The device is shown in figures 1-3 with the following notation:

1 - first tank,

2 - second tank,

3 - membrane

4 - compartment for foaming agent,

5 - water compartment,

6 - mixer

7 - inlet of the mixer,

8 - the outlet of the mixer,

9 - water dispenser,

10 - water supply line,

11 - one part of the delineation of the water supply line,

12 - another part of the ruin of the water supply line,

13 - shutoff valves on one part of the delineation of the water supply line,

14 - shutoff valves on the other part of the fork of the water supply line,

15 - line blowing agent,

16 - calibration diaphragm foaming agent,

17 - one part of the crease of the line of the foaming agent,

18 is another part of the crease of the line of the foaming agent,

19 - shutoff valves on one part of the crease of the line of the foaming agent,

20 - shutoff valves on another part of the crease of the line of the foaming agent.

The inventive device for storing a foaming agent and its proportional mixing with water during fire fighting contains at least two tanks (positions 1 and 2). A membrane 3 is located in each tank 1, 2. The membrane 3 divides the internal cavity of the tank 1 and tank 2 into a compartment 4 for a foaming agent and a compartment 5 for water supplied to the tank during fire fighting. Compartments 4 and 5 may be on either side of the membrane 3.

The mixer 6 is made in the form of a container with an inlet 7 for supplying water and an outlet 8 for an aqueous solution of a foaming agent. A water dispenser 9 is installed inside the mixer 6. The water dispenser 9 can be made, for example, in the form of a venturi or washer with a hole, whose diameter determines the dosage.

A water supply line 10 to tanks 1 and 2 is connected to the mixer 6. Line 10 is connected to the mixer 6 to the water dispenser 9 in the direction of flow in the mixer 6. The other end of line 10 is a cleft. Parts 11 and 12 of the cleft are attached one at a time to

the water compartment 5 of each tank 1 and 2. In figures 1-3, it is shown as an example that part 11 is connected to the water compartment 5 of the tank 1, and part 12 is connected to the water compartment 5 of the tank 2.

Parts 11 and 12 are equipped with valves 13 and 14, respectively, for example, ball valves for tight locking of each part 11, 12.

A line 15 is also connected to the mixer 6 of the foaming agent displaced by water from the tanks 1 and 2. Line 15 is connected to the mixer 6 after the water dispenser 9 in the direction of flow of the mixer 6. At this end of the line 15, a calibration diaphragm 16 of the foaming agent is installed. The diaphragm 16 may be a washer with a hole, the diameter of which determines the dosage of the foaming agent in an aqueous solution. The other end of line 15 is made in the form of a fork. Fragment parts 17 and 18 are connected one at a time to the foaming compartment 4 of each tank 1 and 2. Figures 1-3 show by way of example that part 17 is attached to compartment 4 of tank 1 and part 18 is attached to compartment 4 of tank 2.

Parts 17 and 18 are equipped with valves 19 and 20, respectively, for their tight locking.

Parts 11 and 12 of the crease of the water supply line 10 are made in the form of bodies that are mirrored to each other. Parts 17 and 18 of the crease of line 15 of the foaming agent displaced by the water from the foaming agent tanks are also made in the form of bodies mirror-like to each other.

The device operates as follows.

With the simultaneous operation of tanks 1 and 2, the shutoff valves 13, 14, 19 and 20 (for example, ball valves) are in the "open" position.

In the inlet 7 of the mixer 6 serves water. Water passes through the water dispenser 9, and also enters through the water supply lines 10 through part 11 and part 12 to the water compartments 5 of the tank 1 and tank 2. As

increase in the amount of water in compartments 5 of tanks 1 and 2 increases the pressure of water through the membrane 3 on the foaming agent located in the suction 4 of each tank 1, 2. The foaming agent is displaced by water from the tank 1 and tank 2 into line 15 connected to the mixer 6 after the water dispenser 9 Moreover, the foaming agent first comes from the compartments 4 in parts 17 and 18 of line 15. Then the foaming agent enters through line 15 through the calibration diaphragm of the foaming agent 16 to the mixer 6. The diameter of the opening of the calibration diaphragm of the foaming agent 16 provides the required concentration foaming agent in an aqueous solution. In mixer 6, water is mixed that passes through water dispenser 9 and a foaming agent displaced by water from tanks 1 and 2 and passing through calibration diaphragm 16. The resulting aqueous solution of a foaming agent of a given concentration leaves the hole 8 of mixer 6 and goes to a fire extinguishing installation (foam generator, hydraulic monitor, etc.).

In the case of the need for a single operation of the tank 1 or 2, for example, during the repair of one of the tanks 1 or 2, the following actions are performed.

For a single operation of the tank 1, the shut-off valve 14 on the line 12 part is transferred to the closed position. That is, the water supply to the tank 2 is shut off. Shut-off valves 20 on the foaming agent line part 18 are tightly sealed to prevent the foaming agent from the part 17 connected to the tank 1 to enter the tank 2; Shut-off valves 13 on the part 11 of the water supply line 10 and shut-off valves 19 on part 17 of the line of the foaming agent 15 are in the "open" position.

In the inlet 7 of the mixer 6 serves water. Water passes through the water dispenser 9, and also flows through the water supply line 10 through part 11 to compartment 5 of tank 1. As the amount of water in compartment 5 increases, its pressure increases through the membrane 3 to the foaming agent located in compartment 4 of tank 1. The foaming agent is displaced water from

tank 1 to line 15 connected to mixer 6 after water dispenser 9. Moreover, the foaming agent first comes from compartment 4 to part 17 of line 15. Then, the foaming agent enters line 15 through the calibration diaphragm of the foaming agent 16 to mixer 6. In mixer 6, water is mixed, passed through a water dispenser 9, and a foaming agent. Through the outlet 8 of the mixer 6, the resulting aqueous solution of the foaming agent of a given concentration is supplied to the fire extinguishing installation.

For a single operation of the tank 2, the shutoff valves 13 on the part 11 of the line 10 are hermetically sealed and the water is blocked from entering the tank 1. The shutoff valves 19 on the part 17 of the line of the foaming agent 15 coming from the tank 1 are also hermetically closed. At the same time, the stop valves 14 on the part 12 of the line 10 and the stop valves 20 on the part 18 of the line 15 are open.

In the inlet 7 of the mixer 6 serves water. Water passes through the water dispenser 9, and also enters the water supply line 10 through part 12 into the compartment 5 for the water of the tank 2. As the amount of water in the compartment 5 increases, its pressure increases through the membrane 3 to the foaming agent located in the compartment 4 of the tank 2. The foaming agent is displaced by water from the tank 2 to the line 15 connected to the mixer 6 after the water dispenser 9. Moreover, the foaming agent first comes from the compartment 4 to part 18 of the line 15. Then the foaming agent enters through the line 15 through the calibration diaphragm of the foaming agent 16 into the mixer 6. To the mixer e 6 is the mixing of water passing through the water dispenser 9, and a foaming agent displaced by the water from the tank 2. The resulting aqueous solution of the foaming agent of a given concentration is fed to the fire extinguishing installation through the outlet 8 of the mixer 6.

Parts 11 and 12 of the crease of the water supply line 10, as well as parts 17 and 18 of the crease of the line 15 displaced by water from the foaming agent tanks, are made in the form of bodies mirror-like to each other. Hence,

hydraulic losses in part 11 are equal to hydraulic losses in part 12, and hydraulic losses in part 17 are equal to hydraulic losses in part 18.

Therefore, when the tank 1 or tank 2 is turned off from operation, the pressure of the foaming agent does not change and, therefore, its flow rate at the inlet of the foaming agent to the calibration diaphragm.

As a result, both during simultaneous operation of two tanks 1 and 2, and during single operation of tank 1 or 2, the same amount of foaming agent passes through the same calibration diaphragm of the foaming agent with the same diameter of its dispensing hole for the same period of time. That is, the concentration of the foaming agent is unchanged.

Therefore, in the inventive device, when switching from the simultaneous operation of tanks 1 and 2 to the single operation of tank 1 or 2, it is not necessary to change the calibration diaphragm 16 to a diaphragm with a metering hole of a larger diameter, as would have been done in the closest analogue.

Thus, since in the inventive device the hydraulic losses in part 11 are equal to the losses in part 12 of the fork of the water supply line 10, and the hydraulic losses in parts 17 are equal to the losses in part 18 of the fork of the foaming line 15, simultaneous and single operation of tanks 1 or 2 with the same calibration diaphragm of the foaming agent 16 with the same diameter of its dispensing hole.

Claims (1)

A device for storing a foaming agent and its proportional mixing with water during fire fighting contains at least two tanks, each of which has a membrane dividing the internal cavity of each tank into a compartment for the foaming agent and a compartment for water supplied to the tank during fire fighting, the mixer in the form of a container with an inlet for water supply, an outlet for an aqueous solution of a foaming agent and with a water dispenser installed inside, a line for supplying water to the tanks, connected at one end to the mixer water in the direction of flow in the mixer, with the other end made in the form of a cleft, parts of which are connected one to the water compartment of each tank and are equipped with shutoff valves, a line of water displaced from the foaming agent tanks, one end of which with a calibration diaphragm mounted on it the foaming agent is connected to the mixer after the water dispenser in the direction of flow in the mixer, and the other end is made in the form of a fork, parts of which are connected one to the foam compartment of each tank and are equipped with a shut-off fixture, characterized in that the parts of the delineation of the water supply line, as well as the parts of the delineation of the line displaced by the water from the foaming agent tanks, are made in the form of bodies that are mirrored to each other.