KR200220923Y1 - super chemical fire engine water and foam system - Google Patents

Abstract

The present invention relates to a high performance chemical fire truck equipped with a water / foam liquid system, and is connected to a known water tank (11) and a water tank (11) to pump water to a pump discharge line (13). And, connected to the pump discharge line 13 by the water waterproof line 15 and the water control valve 14 is installed when the water pumped by the water pump 12 when the water control valve 14 is opened is injected The water discharge port 16 and one end is connected to the pump discharge line 13 and the other side is connected to the foam waterproof line 17, and the water waterproof line 15 is opened when the water discharge line 15 is closed to open water or foam liquid in the pump discharge line 13. Foam proportional suction port 21, which is connected to the foam ratio line 17, the foam proportional opening (18) connected to the foam waterproof line (17), and the foam liquid is sprayed, and the foam liquid valve (20) is installed. Pressurized tank (19) connected to the automatic proportional valve (30) by means of a pressurized water tank (23a) is connected to the automatic proportional valve (30) by means of a foam pipe (22). The foam liquid mixed with water in the foam mixer 50 connected to the water pump 12 by the foam mixer 50 and the foam mixer 50 and the water pump 12 by mixing the water in the water pump ( It was equipped with a high performance chemical fire truck equipped with a water / foam liquid system consisting of a foam mixture liquid discharge line 24 to be supplied to 12).

Therefore, when the foam is waterproof, the automatic proportional valve 30 is opened and the foam liquid is introduced thereto, and the foam liquid introduced into the automatic proportional valve 30 is introduced into the foam mixer 50 by the pressure of the water supplied to the pressurization line 23 and the water. And mixed with the foam liquid is supplied to the water pump 12 through the foam mixture liquid discharge line 24 is injected through the pump discharge line 13, the foam waterproof line 17, the foam drain 18, According to the pressure of the pump 12, the pressure of the water supplied to the pressure line 23 is changed, and accordingly the amount of foam liquid flowing into the foam mixer 50 is changed, according to the water pump 12 pressure without additional manpower The mixing ratio of water and foam liquid can be adjusted automatically.

Description

Super chemical fire engine water and foam system

The present invention relates to a fire truck, and more particularly, to a high performance chemical fire truck equipped with a water / foam liquid system.

In general, a fire truck includes a command vehicle that generally directs fire brigade activities at all disaster accident sites, a pump car that specializes in extinguishing fires in the event of a fire, a tank car that supplies water for firefighting to a pump car or a ladder car, There are ladder trucks required for fire brigades to enter or rescue people in large high-rise buildings, wreckers equipped with safety tools such as spreaders, hotkeys, cutters, welders, etc., to rescue lives at disaster scenes, and chemical fire trucks. .

Here, chemical fire trucks are mainly used when it is impossible to extinguish them with water or simple chemicals. In case of fires of special cases such as oil type and chemicals, it is useless to spray water, but it may be more dangerous. to be.

The chemical fire truck is equipped with a water tank, a foam tank, and a water pump. The water pump is connected to a foam tank and a water tank so that the foam liquid and water are supplied to the water pump, and the foam liquid and water supplied to the water pump are properly mixed. It is discharged to the foam drain through the foam waterproof line.

On the other hand, the fire site may be extinguished in a state in which the foam drain is close to the fire site according to the surrounding conditions, the degree of fire occurrence, and the entry state of the chemical fire engine, or the foam discharge port may be extinguished relatively far from the fire site.

In this way, the water pump pressure is properly adjusted according to the distance between the foam drain and the fire site. When the distance between the foam drain and the fire site is far, the water pump pressure is increased to improve the ejection distance. If the distance is relatively close, the water pump pressure is appropriately reduced to prevent the foam liquid from being ejected at an excessive pressure.

Here, the water and the foam liquid should be mixed in the most suitable ratio to extinguish the fire, so the mixing ratio of the foam liquid and water should not be changed even if the water pump pressure is changed.

However, the conventional high performance chemical fire truck equipped with a water / foam liquid system has to adjust the foam liquid supply by manually adjusting the foam liquid valve whenever the water pump pressure is changed. Accordingly, when the fire is extinguished, the mixing ratio of two persons, namely, water / foam liquid The person who adjusts and grabbed the foam drain was required to spray the liquid.

In addition, the work was very complicated, for example, the amount of foam liquid supplied was adjusted every time the water pump pressure was changed in order to spray the mixed foam liquid in an optimal state.

An object of the present invention for solving the above problems is to provide a high performance chemical fire truck equipped with a water / foam liquid system to automatically adjust the supply amount of the foam liquid in accordance with the change in the water pump pressure.

The high-performance chemical fire truck equipped with the present invention water / foam liquid system for achieving the above object is a high-performance chemical fire truck equipped with the water / foam liquid system, and is connected to a known water tank and a water tank to supply water to a pump discharge line. The water pump for pumping the water, connected to the pump discharge line by the water waterproofing line, and the water control valve is installed, when the water control valve is opened, the water discharge port is sprayed by the water pump and the pump discharge line at one end. Connected to the other side and connected to the foam waterproof line and open when the waterproof line is closed, the automatic proportional valve to guide the water or foam liquid in the pump discharge line to the foam waterproof line, and the foam waterproof port connected to the foam waterproof line and sprayed with foam liquid. A well-known foam tank connected to the automatic proportional valve by a foam liquid inlet provided with a foam liquid valve and a water supply valve connected to the automatic proportional valve by a foam pipe Is connected by a line between the foam mixture is connected to the water pump, water pump and the foam mixer is characterized in that comprising the pomaek mixed with water in the foam mixer to form a mixture discharge line to be supplied to the water pump.

One feature of the high performance chemical fire truck equipped with the present water / foam liquid system is that the foam mixer consists of a conical shaped pressure inlet and a pressure outlet, and a venturi tube formed between a slot formed between the pressure inlet and the pressure outlet; A pressure line is connected to the pressure inlet of the venturi pipe, a foam mixture discharge line is connected to the pressure outlet, and a foam pipe outlet is connected to the slot inlet.

Therefore, when the foam is released, the automatic proportional valve is opened and the foam liquid is introduced into it. The foam liquid introduced into the automatic proportional valve is introduced into the foam mixer by the pressure of the water supplied to the pressure line, mixed with the water, and the mixed foam liquid discharges the foam mixture liquid discharge line. Since the water is supplied to the water pump through the pump discharge line, the foam waterproof line, and the foam discharge port, the pressure of the water supplied to the pressure line is changed according to the water pump pressure, so that the amount of foam liquid flowing into the foam mixer is changed. Therefore, the mixing ratio of the water and the foam liquid can be automatically adjusted according to the water pump pressure without additional manpower.

Figure 1 is a schematic cross-sectional view showing a high performance chemical fire truck equipped with the present invention water / foam liquid system

Figure 2 is an enlarged cross-sectional view showing a foam mixer which is a feature of the present invention

Figure 3 is an operating state of Figure 1

Figure 4 is an operating state of Figure 2

* Description of the symbols for the main parts of the drawings *

11; Water tank 12; Water pump

15; Water resistant line 17; Foam Waterproof Line

19; Foam tank 22; Foam piping

23; Pressurizing line 24; Foam Mixing Line

30; Automatic proportional valve 50; Foam Mixer

53; Slot

Specific features and advantages of the present invention will become more apparent from the following description with reference to the accompanying drawings.

In Figure 1, a high performance chemical fire truck equipped with the present invention water / foam liquid system is provided with a known water tank 11 and a foam tank 19. A water pump 12 is connected to one side of the water tank 11, and a pump discharge line 13 is connected to the other side of the water pump 12.

One side of the pump discharge line 13 is connected to a water waterproof line 15 in which a water control valve 14 is installed, and the water control valve 14 is opened at the end of the water waterproof line 15 by a water pump 12. The water discharge port 16 is sprayed water is provided.

Foam discharge line 17 is connected to the other side of the pump discharge line 13, the foam waterproof line 17 end of the foam to spray the foam liquid mixed with the foam and water supplied from the foam tank 19 to be described later The waterproof opening 18 is provided.

Meanwhile, between the pump discharge line 13 and the foam waterproofing line 17, an automatic proportional valve 30, which is a feature of the present invention, is installed to selectively select a passage from the pump discharge line 13 to the foam waterproofing line 17. Will be opened and closed.

On the other hand, the foam tank 19 is connected to one end of the foam liquid inlet 21, the foam liquid valve 20 is installed, the other end of the foam liquid inlet 21 is connected to the automatic proportional valve (30). One end of the foam pipe 22 is connected to the lower side of the automatic proportional valve 30 and the other end of the foam mixer 50 is installed.

One side of the pressurizing line 23 is provided with a water supply valve 23a is connected to one side of the foam mixer 50, and the other side of the pressurizing line 23 is connected to the water pump 12. One end of the foam mixture liquid discharge line 24 is connected to the other side of the foam mixer 50, and the other end of the foam mixture liquid discharge line 24 is connected thereto to supply the mixed foam liquid from the foam mixer 50 to the water pump 12. do.

Figure 2 is a schematic cross-sectional view showing a foam mixer 50, which is a feature of the present invention, which is a cone-shaped pressure inlet 52 and pressure outlet 54, and between the pressure inlet 52 and the pressure outlet 54 It consists of a venturi tube 51 made of a slot 53 formed in the. A pressure line 23 is connected to the pressure inlet 52 of the venturi tube 51, a foam mixture discharge line 24 is connected to the pressure outlet 54, and a foam pipe outlet (53) to the slot inlet 53 a. 22a) is connected.

In the high performance chemical vehicle equipped with the present invention water / foam liquid system, the foam liquid valve 20 is shut off and the water control valve 14 is opened while the water pump 12 is driven. The water in the tank 11 is waterproofed.

First, the water in the water tank 11 is supplied to the pump discharge line 13 through the water pump 12, at which time the automatic proportional valve 30 is blocked and the water supplied to the pump discharge line 13 is a water waterproof line Through 15 is waterproof to the water discharge port (16).

When the foam liquid is waterproofed, the foam liquid valve 20 is opened, the water control valve 14 is blocked, and the water pump is driven in this state. When the water pump 12 is driven and the water in the water tank 11 is supplied to the pump discharge line 13, the water waterproof line 15 is blocked by the water control valve 14, so the valve is automatically proportional to the water pressure. (30) is opened.

Accordingly, the foam liquid in the foam tank 19 is introduced into the automatic proportional valve 30 through the foam liquid inlet 21, and the introduced foam liquid is introduced into the foam mixer 50 through the foam pipe 22.

Here, the inside of the venturi tube 51 of the foam mixer 50 acts as a high pressure water pressure by the pressure line 23 connected to the water pump 12, and the water supplied from the pressure line 23 is supplied to the venturi tube ( When conveyed to the slot 53 at the pressure inlet 52 of 51), the feed rate of water increases but the pressure decreases. The pressure of the foam pipe outlet 22a connected to the slot inlet 53a, including the slot inlet 53a, decreases due to the flow of water, so that the pressure of the foam pipe outlet 22a is higher than the pressure of the oil level of the foam tank 19. When it becomes small, the foam liquid is introduced into the slot inlet 53a through the foam liquid inlet 21, the body 31, the foam pipe 22, and the foam pipe outlet 22a by the internal pressure of the foam tank 19.

Therefore, the foam liquid flowing into the slot inlet 53a is mixed with the water passing through the pressure inlet 52 and passes through the slot 53, and the foam liquid passed through the foam mixture is discharged through the pressure outlet 54. It flows to (24) and flows back into the water pump (12).

The foam liquid introduced into the water pump 12 is sprayed to the outside through the pump discharge line 13, the foam waterproofing line 17, the foam waterproofing port (18).

Here, when the distance between the place to be extinguished and the foam drain 18 is relatively short, when the pumping pressure of the water pump 12 is lowered, the water pressure supplied to the pressure line 23 decreases accordingly, and thus the slowness of the foam mixer 50. The flow rate through the trap 53 is reduced, and as a result, the pressure difference between the foam tank 19 and the foam pipe outlet 22a is reduced, thereby reducing the amount of foam liquid supplied to the foam mixer 50.

Therefore, as the water pressure decreases in the pressure line 23 and the flow rate decreases, the amount of foam liquid mixed therewith also decreases.

On the contrary, when the pumping pressure of the water pump 12 is increased because the distance between the place to be extinguished and the foam drain 18 is increased, the water pressure supplied to the pressure line 23 increases accordingly, and thus, the foam mixer 50 The flow rate through the slot 53 increases, and the pressure inside the slot 53 including the foam pipe outlet 22a decreases as the flow rate increases.

Therefore, the amount of foam liquid supplied into the foam mixer 50 increases because the pressure difference between the foam tank 19 and the foam pipe outlet 22a increases by that much.

As described above, the high-performance chemical fire truck equipped with the present water / foam liquid system automatically reduces the amount of water and foam liquid supplied into the foam mixer 50 when the pumping pressure of the water pump 12 decreases according to the conditions of the fire site. When the pumping pressure is increased, since the amount of water and the amount of the foam liquid increase, the mixing ratio of the water and the foam liquid is constant regardless of the pumping pressure of the water pump 12.

Therefore, the high performance chemical fire truck equipped with the present water / foam liquid system does not need to manually adjust the foam liquid valve 20 whenever the pumping pressure of the water pump 12 is changed, and thus, mixes water / foam liquid during fire suppression. No need to adjust the ratio.

In addition, even when the water pump pressure is changed every time, even if the foam liquid supply amount is not adjusted at all times, it is always mixed at a constant mixing ratio, so that the always mixed foam liquid can be injected.

According to the high-performance chemical fire truck equipped with a water / foam liquid system according to the present invention as described above, the foam liquid is introduced into the automatic proportional valve 30 when the foam is waterproofed and the foam liquid introduced into the automatic proportional valve 30 is pressurized line. (23) is introduced into the foam mixer 50 by the pressure of the water supplied to the water and mixed with water, and the mixed foam liquid is supplied to the water pump 12 through the foam mixture liquid discharge line 24 to pump discharge line 13, Since the water is sprayed through the foam waterproof line 17 and the foam waterproofing port 18, the pressure of the water supplied to the pressure line 23 is changed according to the pressure of the water pump 12, and thus flows into the foam mixer 50. Since the amount of foam liquid is different, the mixing ratio of water and foam liquid can be automatically adjusted according to the water pump 12 pressure without additional manpower.

Claims (2)

In a high performance chemical fire truck equipped with a water / foam liquid system, Known water tank 11, A water pump 12 connected to the water tank 11 and pumping water to the pump discharge line 13; Water that is connected to the pump discharge line 13 by the water waterproof line 15 and the water control valve 14 is installed so that the water pumped by the water pump 12 when the water control valve 14 is opened With the waterproof opening 16 One end is connected to the pump discharge line 13 and the other side is connected to the foam waterproofing line 17, and the water waterproofing line 15 is opened when the water is closed, the water or foam liquid in the pump discharge line 13 to the foam waterproofing An automatic proportional valve (30) leading to the line (17), A foam waterproofing port 18 connected to the foam waterproofing line 17 and spraying the foam liquid; A known foam tank (19) connected to the automatic proportional valve (30) by a foam liquid inlet (21) provided with a foam liquid valve (20), A foam mixer connected to the automatic proportional valve 30 by the foam pipe 22 and connected to the water pump 12 by a pressure line 23 in which a water supply valve 23a is installed; It is connected between the foam mixer 50 and the water pump 12 is characterized in that consisting of a foam mixture liquid discharge line 24 for supplying the foam liquid mixed with water in the foam mixer 50 to the water pump 12 High performance chemical fire truck with water / foam solution system. The method of claim 1, wherein the foam mixer 50, A venturi tube 51 composed of a cone-shaped pressure inlet 52 and a pressure outlet 54 and a slot 53 formed between the pressure inlet 52 and the pressure outlet 54; The pressure line 23 is connected to the pressure inlet 52 of the venturi tube 51, and the foam mixture solution discharge line 24 is connected to the pressure outlet 54, and the foam is connected to the slot inlet 53a. High performance chemical fire truck equipped with a water / foam liquid system, characterized in that the pipe outlet (22a) is connected.