CN102814016A - Pressure accumulating pre-mixing type water mist foam extinguishing equipment - Google Patents

Abstract

The invention relates to a pressure storage premixed water mist foam fire extinguishing device. The device includes a storage tank, a foam stock solution bottle and a high-pressure gas cylinder; the foam stock solution bottle is located outside the top of the storage tank; the top of the foam stock solution bottle is connected to the other end of the high-pressure gas pipe, and the bottom of the foam stock solution bottle is provided with an outlet, and the outlet passes through three The through valve is respectively connected to the foam stock solution inlet and the high-pressure gas inlet on the top of the storage tank. The invention moves the foam stock solution bottle and the three-way valve originally located in the storage tank to the top thereof, improves their anti-corrosion ability, and solves the sealing problem between the regulating valve and the storage tank at the same time. A curved pipe fitting is used to connect the right outlet of the three-way valve and the gas inlet on the upper surface of the storage tank to realize the switching of the way the gas enters the storage tank after the foam stock solution is sprayed to the storage tank. In addition, the improved pressure storage premixed water mist foam fire extinguishing device also has the characteristics of compact structure, small amount of foam, high fire extinguishing efficiency, convenient and fast movement, etc., and can be used to extinguish initial and large fires in time.

Description

Pressure storage premixed water mist foam fire extinguishing device

technical field

The invention belongs to the technical field of fire-fighting facilities, and in particular relates to a pressure-storage premixed fine water mist foam fire extinguishing device.

Background technique

Chinese patent ZL 201010162713.x discloses a highly efficient marine pressure storage premixed water mist foam fire extinguishing device. It includes high-pressure gas cylinders, storage tanks, hoses, reels and fine water mist foam nozzles; the upper part of the storage tank is equipped with a foam stock solution bottle, which is connected to the high-pressure gas inlet, and the high-pressure gas inlet is connected to the high-pressure gas cylinder through a high-pressure gas pipe A three-way valve is installed at the bottom outlet of the foam stock solution bottle; the downward outlet of the three-way valve is connected to the foam stock solution nozzle through a pipe fitting, the storage tank is filled with water, the water level is located at the overflow port, and the nozzle is located below the liquid level in the storage tank; the three-way The right outlet of the valve is located above the liquid level in the storage tank; the left end of the three-way valve is connected to the regulating valve through a pipe fitting. Since the foam stock solution bottle and the three-way valve are located inside the storage tank, the control and adjustment of the three-way valve needs to pass through the regulating valve installed on the outer wall of the storage tank, and the regulating valve and the three-way valve are connected by a longer rod. In practical applications, there may be the following problems: (1) The regulating valve and the storage tank cannot be completely sealed, causing high-pressure gas to leak from the gap between the two during the application process, affecting the gas pressure of the storage tank; (2) There may be water, and there may be a small amount of foam liquid. During long-term storage, the adjustment rod and three-way valve will be corroded, which may make it difficult or fail to open during emergency fire extinguishing.

Contents of the invention

Aiming at the above-mentioned problems in the Chinese patent ZL 201010162713.x marine pressure storage premixed water mist foam fire extinguishing device, the present invention provides a pressure storage premixed water mist foam fire extinguishing device with a more reasonable structure.

The pressure storage premixed water mist foam fire extinguishing device includes a storage tank 2, a foam stock solution bottle 5 and a high-pressure gas cylinder 1; the top of the storage tank 2 is provided with a safety valve 10, a pressure gauge 21, and a water inlet 8, a foam stock solution Inlet 25 and high-pressure gas inlet 17, the upper side of the storage tank 2 is provided with an overflow port 9, the bottom is provided with a discharge port 19, and the inside is provided with a raw liquid pipe 18 and a mixed liquid pipe 26; the upper end of the raw liquid pipe 18 is connected to the foam Stock solution inlet 25, the lower end is provided with foam stock solution nozzle 11; The top of described storage tank 2 is provided with reel 4, and hose 3 is coiled on the reel 4; One end of hose 3 is connected with the liquid outlet 14 of storage tank 2, The other end of the hose 3 is connected to the fine water mist foam nozzle 6 through the nozzle handle 16; the top of the high-pressure gas cylinder 1 is connected to one end of the high-pressure gas pipe 23, and the high-pressure gas pipe 23 at the outlet of the high-pressure gas cylinder 1 is provided with a decompression Valve 7; the improvement is: the foam stock solution bottle 5 is located outside the top of the storage tank 2; the top of the foam stock solution bottle 5 is connected to the other end of the high-pressure air pipe 23, and the bottom of the foam stock solution bottle 5 is provided with an outlet, and the outlet is connected to a three-way valve 12. The downward outlet of the three-way valve 12 is connected to the foam stock solution inlet 25, and the right outlet 24 of the three-way valve 12 is connected to the high-pressure gas inlet 17 through a curved pipe.

The pressure storage premixed water mist foam fire extinguishing device of the present invention moves the original foam liquid bottle and the three-way valve in the storage tank to the top, removes the long rod between the regulating valve and the three-way valve, and improves them. Excellent anti-corrosion ability, and at the same time solve the sealing problem between the regulating valve and the storage tank. A curved pipe fitting is used to connect the right outlet of the three-way valve and the gas inlet on the upper surface of the storage tank to realize the switching of the way the gas enters the storage tank after the foam stock solution is sprayed to the storage tank. In addition, the improved pressure storage premixed water mist foam fire extinguishing device also has the characteristics of compact structure, small amount of foam, high fire extinguishing efficiency, convenient and fast movement, etc., and can be used to extinguish initial and large fires in time.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a sectional view along line A-A of Fig. 1 .

Serial numbers in the above picture: high-pressure gas cylinder 1, storage tank 2, hose 3, reel 4, foam stock solution bottle 5, fine water mist foam nozzle 6, pressure reducing valve 7, water inlet 8, overflow 9, safety valve 10 , foam stock solution nozzle 11, three-way valve 12, first ball valve 13, liquid outlet 14, second ball valve 15, nozzle handle 16, high-pressure gas inlet 17, stock solution pipe 18, diarrhoea port 19, foam stock solution filling port 20 , pressure gauge 21, adjustment handle 22, high-pressure gas pipe 23, right side outlet 24, foam stock solution inlet 25, mixed solution conduit 26.

Detailed ways

The present invention will be further described through the embodiments below in conjunction with the accompanying drawings.

Example

Referring to Figure 1, the pressure storage premixed water mist foam fire extinguishing device includes a storage tank 2, a foam stock solution bottle 5 and a high-pressure gas cylinder 1; a safety valve 10, a pressure gauge 21 are installed on the top of the storage tank 2, and a water inlet is also provided 8. Foam stock solution inlet 25 and high-pressure gas inlet 17, see Figure 2. One side of the upper part of the storage tank 2 is provided with an overflow port 9, and the bottom is provided with a drain port 19, and a raw liquid pipe 18 and a mixed liquid conduit 26 are installed inside. The upper end of the stock solution pipe 18 communicates with the foam stock solution inlet 25, and the foam stock solution nozzle 11 is installed at the lower end. A reel 4 is installed on the top of the storage tank 2, and the hose 3 is coiled on the reel 4; one end of the hose 3 is connected to the liquid outlet 14 of the storage tank 2, and the other end of the hose 3 is connected to the fine water through the nozzle handle 16 Fog Foam Nozzle6. The top of the high-pressure gas cylinder 1 is connected with one end of the high-pressure gas pipe 23, and the pressure-relief valve 7 is installed on the high-pressure gas pipe 23 at the outlet of the high-pressure gas cylinder 1 . The foam stock solution bottle 5 is located outside the top of the storage tank 2; the top of the foam stock solution bottle 5 is connected to the other end of the high-pressure gas pipe 23, and the top of the foam stock solution bottle 5 is also provided with a foam stock solution filling port 20. The bottom of the foam stock solution bottle 5 is provided with an outlet, and the outlet is connected to the three-way valve 12, the downward outlet of the three-way valve 12 is connected to the foam stock solution inlet 25, and the right outlet 24 of the three-way valve 12 is connected to the high-pressure gas inlet through a curved pipe fitting 17, the left side of the three-way valve 12 is connected with the adjustment handle 22.

During the fire extinguishing operation, the gas in the high-pressure gas cylinder 1 enters the foam stock solution bottle 5 through the high-pressure gas pipe 23 after being decompressed by the pressure reducing valve 7 . First, use the adjusting handle 22 to only connect the downward outlet of the three-way valve 12, and the high-pressure gas drives the foam stock solution to spray into the water. The spray divergence angle of the foam stock solution nozzle 11 is 180 degrees. After the foam stock solution is sprayed and the pressure in the storage tank 2 rises to 1/2 of the working pressure, the right outlet 24 of the three-way valve 12 is connected, and the outlet of the three-way valve 12 Down exit closed. The high-pressure gas enters the upper space of the storage tank 2 to drive the foam-water mixture. After the working pressure is reached, the first ball valve 13 and the second ball valve 15 are opened, and the mixed liquid passes through the liquid outlet 14, then through the hose 3, and is sprayed out from the fine water mist foam nozzle 6.

Claims (1)

1. Pressure storage premixed water mist foam fire extinguishing device, including a storage tank (2), a foam stock solution bottle (5) and a high-pressure gas cylinder (1); the top of the storage tank (2) is equipped with a safety valve (10), The pressure gauge (21) is also provided with a water inlet (8), a foam liquid inlet (25) and a high-pressure gas inlet (17). The upper side of the storage tank (2) is provided with an overflow port (9), and the bottom is provided with The discharge port (19) is provided with a stock solution pipe (18) and a mixed solution conduit (26) inside; the upper end of the stock solution pipe (18) is connected to the foam stock solution inlet (25), and the foam stock solution nozzle (11) is arranged at the lower end; The top of the storage tank (2) is provided with a reel (4), and the hose (3) is coiled on the reel (4); one end of the hose (3) is connected to the liquid outlet (14) of the storage tank (2) , the other end of the hose (3) is connected to the fine water mist foam nozzle (6) through the nozzle handle (16); the top of the high-pressure gas cylinder (1) is connected to one end of the high-pressure gas pipe (23), and the high-pressure gas cylinder ( 1) A pressure reducing valve (7) is provided on the high-pressure air pipe (23) at the outlet; it is characterized in that: The foam stock solution bottle (5) is located outside the top of the storage tank (2); the top of the foam stock solution bottle (5) is connected to the other end of the high-pressure air pipe (23), and the bottom of the foam stock solution bottle (5) is provided with an outlet, and the outlet is connected to Close the three-way valve (12), the downward outlet of the three-way valve (12) is connected to the foam stock solution inlet (25), and the right outlet (24) of the three-way valve (12) is connected to the high-pressure gas inlet (17 ).

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