RU193773U1 - HEADER DOSER FOR FOAM EXTINGUISHING INSTALLATIONS - Google Patents

Abstract

The dispenser pressure head for extinguishing installations is designed for deluge automatic foam extinguishing systems, has a housing with a water inlet, with a pressure sensor connected to it and a first flow meter, has a pipe with a circuit connected to it, consisting of a non-return valve, a ball valve with control and regulation a locking member, a second flow meter, providing an adjustable supply of a foaming agent, has an opening for draining a solution of a foaming agent.

Description

Pressure dispenser is designed for dispensing foaming agent (additives) to water in deluge automatic foam fire extinguishing installations.

A device for dispensing a foaming agent (RU 129003), made in the form of a ball valve, the ball valve is provided with a scale with a division associated with the body of the ball valve and an arrow associated with the rod of the rotary ball of the crane, while the device is built into the body, which has an inlet for water supply and an outlet for draining the foaming agent solution and has a nozzle equipped with a check valve for supplying the foaming agent.

The known device is not able to control the flow of water and a foaming agent, it is not able to automatically mix water and a foaming agent in the required proportions when the initial data are changed, which limits its use in automatic fire extinguishing installations.

The purpose of the proposed dispenser is to provide a foaming agent solution of a given concentration that is stably supplied under pressure to the fire extinguishing system.

The technical result should be to ensure control of the flow rate and pressure of the water entering the dispenser, providing conditions for the estimated flow rate of the blowing agent entering the dispenser.

The problem is solved in that the pressure dispenser for the installation of foam extinguishing, comprising a housing (mixer) with an opening for supplying water, and with an opening for draining the foaming agent solution, and with a nozzle for supplying the foaming agent, containing a non-return valve, according to the utility model, are installed in of the inlet line for water supply, a water pressure sensor and a first water flow meter, are made installed in the blower supply line in series with a check valve, a ball valve with control and regulation of a locking body, a second flow meter, the electrical measuring circuits of both flow meters and a pressure sensor, as well as the electrical signal target and the control circuit of the ball valve, are made with the possibility of connecting them to the control cabinet, while the check valve is made with the possibility of its connection to the outlet of the pump station foaming agent and the first flow meter and water pressure sensor are configured to connect to the outlet of the water source.

In more detail, a pressure dispenser can be considered by way of illustration in FIG. one.

FIG. 1 is a combined diagram of a pressure dispenser as part of an automatic installation.

The pressure head dispenser for foam fire extinguishing installation consists of a housing (mixer) 1, water inlet 2 and water outlet 3 for the blowing agent, has an inlet for supplying foam 4, a water pressure sensor 5 and a first water flow meter 6 are connected to the inlet a hydraulic line leading the foaming agent to the mixer is installed in series: a check valve 7, a ball valve with control and regulation of the position of the shut-off element 8, a second flow meter for the foaming agent 9; the hydraulic line is connected to the output of the pumping station 10, which is connected to the source of the foaming agent 11 and to the control cabinet 12, which is electrically connected to the measuring circuits of the flowmeters and the sensor, and also connected to the signal circuit and the control circuit of the ball valve with monitoring and regulation of the position of the shut-off element, wherein the first flow meter is connected to a water supply 13.

The dispenser works as follows.

From the source of water supply 13, water under pressure enters through the inlet 2 into the housing 1, while information about the pressure and flow rate of the water from the sensor 5 and the flow meter 6 automatically enters the controller of the control cabinet 12, at the same time from the source of the foaming agent 11, the pump station 10 pumps the calculated portion a foaming agent into the hydraulic line along the chain: check valve 7 - ball valve 8 - second flow meter 9, into the inlet pipe 4 of the housing 1; information on the throughput of the ball valve and the flow rate of the foaming agent is supplied to the controller of the control cabinet, the controller, according to the specified program, taking into account the flow rate of water entering the body and the flow rate of the flowing agent, generates a control command for the ball valve, adjusting its opening or closing to ensuring a given concentration of the foaming agent at the exit 3.

Thus, the housing 1 receives, at the inlet 2, a flow of pressurized water flow controlled by a flow rate and a flow of a blowing agent controlled and flow rate-controlled in the inlet pipe 4, directs a frother solution of a predetermined concentration under pressure through an outlet 3.

The criterion of “industrial applicability” is ensured by the presence of a wide range of pressure sensors, flow meters, check valves and suitable for use as part of a dispenser that are sold on the market.

To control the flow of the foaming agent, a ball valve can be used with control and regulation of the position of the Belimo shut-off element, characterized by the following data:

Torque 10 Nm;

Rated voltage 24 V;

The control is smooth 0 ... 10 V;

The return signal is 2 ... 10 V.

Claims (1)

A pressure dispenser for installing foam extinguishing, comprising a housing with an opening for supplying water, and with an opening for draining the foaming agent solution, and with a nozzle for supplying the foaming agent, comprising a check valve, characterized in that a water pressure sensor is installed in the inlet line for supplying water and a first water flow meter, a check valve installed in series in the blowing agent supply line, a ball valve with control and regulation of the position of the shut-off element, a second flow meter, moreover, an electric The measuring circuits of both flowmeters and the pressure sensor, as well as the electrical signal and control circuits of the ball valve, are made with the possibility of connecting them to the control cabinet, while the check valve is made with the possibility of its connection to the outlet of the blowing agent of the pump station, and the first flowmeter and water pressure sensor made with the ability to connect to the outlet of the water source.

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