Fire extinguishing device utilizing carbon dioxide gas-liquid conversion

Abstract

The utility model relates to a fire extinguishing device utilizing carbon dioxide gas-liquid conversion. Conventional fire extinguishing modes such as water spraying fire extinguishing may face the problems of insufficient water pressure, limited water amount, high after-combustion risk after fire extinguishing and the like in high-rise fire disasters. The device comprises a carbon dioxide bottle group filled with carbon dioxide, and further comprises a water bottle group, the carbon dioxide bottle group is connected with the water bottle group through a first pipeline, one end of the first pipeline is in butt joint with a bottle head valve of the carbon dioxide bottle group, and the other end of the first pipeline is in butt joint with a liquid inlet stop valve of the water bottle group. An outlet pipe and a liquid outlet stop valve are arranged at an outlet of the water bottle group, and the carbon dioxide bottle group is put into a high-low temperature circulating box and is subjected to heat preservation at the temperature of-5 DEG C to-6 DEG C. According to the utility model, the carbon dioxide bottle group and the water bottle group are matched and linked, so that high-efficiency fire extinguishing and chained combustion reaction inhibition can be realized through remote injection, the fire extinguishing speed is higher, and the effect is more obvious.

Description

Technical Field

[0001] This utility model belongs to the field of fire protection technology, and in particular to a fire extinguishing device that utilizes the gas-liquid conversion of carbon dioxide. Background Technology

[0002] With the acceleration of urbanization, the number and height of high-rise buildings are constantly increasing. Traditional fire truck ladders have limited height, making it difficult to effectively extinguish high-rise fires. High-rise fires spread rapidly and evacuate people is difficult, often resulting in huge losses of life and property.

[0003] Conventional firefighting methods, such as water spraying, may face challenges in high-rise fires, including insufficient water pressure, limited water volume, and a high risk of reignition after extinguishing. Therefore, a firefighting method is needed that can rapidly cool the fire, continuously suppress flames, and effectively prevent reignition. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a fire extinguishing device that utilizes the gas-liquid conversion of carbon dioxide, which can achieve efficient fire extinguishing through remote spraying.

[0005] The present invention adopts the following technical solution: a fire extinguishing device utilizing carbon dioxide gas-liquid conversion, comprising a carbon dioxide cylinder group filled with carbon dioxide, and a water cylinder group. The carbon dioxide cylinder group and the water cylinder group are connected by a first pipeline. One end of the first pipeline is connected to the cylinder head valve of the carbon dioxide cylinder group, and the other end is connected to the liquid inlet shut-off valve of the water cylinder group. The outlet of the water cylinder group is provided with an outlet pipe and a liquid outlet shut-off valve. The carbon dioxide cylinder group is placed in a high and low temperature circulating chamber and kept at -5℃ to -6℃.

[0006] Preferably, the pressure of the carbon dioxide cylinder assembly is 3 MPa.

[0007] Preferably, the first pipeline is also provided with a first shut-off valve and a vent shut-off valve.

[0008] Preferably, a branch of the first pipeline is connected to a recorder via a pressure transmitter.

[0009] Preferably, a siphon tube is provided inside the carbon dioxide cylinder group.

[0010] Preferably, a turbine flow meter is also installed on the first pipeline.

[0011] Preferably, the water bottle group is an externally pressurized heptafluoropropane bottle group, with a manual ball valve and a safety valve installed on the outside of the bottle group.

[0012] This invention combines carbon dioxide cylinders and water cylinders in a coordinated manner. Through the large amount of heat absorbed during the phase change of the carbon dioxide mixture, the flame temperature can be significantly reduced in a short time, inhibiting the chain reaction of combustion. Compared with traditional fire extinguishing methods that rely solely on water or other single extinguishing media, this method is faster and more effective. Especially in high-rise fires where it is difficult to directly contact the fire source, it can achieve efficient fire extinguishing through remote spraying. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] In the diagram: 1. Carbon dioxide cylinder assembly 2. Bottle head valve 3. First pressure transmitter 4. First shut-off valve 5. Turbine flow meter 6. Elbow 7. Inlet shut-off valve 8. Safety valve 9. Manual ball valve 10. Second pressure transmitter 11. Water bottle assembly 12. Vent shut-off valve 13. Recorder 14. Siphon tube. Detailed Implementation

[0015] The present invention will be further described below with reference to specific embodiments.

[0016] like Figure 1 The fire extinguishing device shown includes a carbon dioxide cylinder assembly 1, which contains a siphon tube and is filled with carbon dioxide. It also includes a water cylinder assembly 11. The carbon dioxide cylinder assembly 1 and the water cylinder assembly 11 are connected by a first pipeline. One end of the first pipeline is connected to the cylinder head valve 2 of the carbon dioxide cylinder assembly, and the other end is connected to the inlet shut-off valve 7 of the water cylinder assembly. The outlet of the water cylinder assembly is equipped with an outlet pipe and an outlet shut-off valve. The carbon dioxide cylinder assembly 1 is placed in a high-low temperature circulating chamber and kept at -5℃ to -6℃. At this temperature, carbon dioxide can store energy. When needed, opening the valve allows it to be released and mixed with water for spraying at the fire scene.

[0017] Specifically, after adjustments, the pressure of carbon dioxide cylinder group 1 was set to approximately 3 MPa. This pressure facilitates the mixing of carbon dioxide with water.

[0018] Specifically, the first pipeline is also equipped with a first shut-off valve 4 and a vent shut-off valve 12. This valve combination facilitates initial commissioning of the carbon dioxide cylinder group. The pipeline between the first shut-off valve 4 and the vent shut-off valve 12 is connected by a bend.

[0019] Specifically, a siphon tube 14 is installed inside the carbon dioxide cylinder group 1.

[0020] To monitor the operating parameters within the pipeline, a recorder 13 is connected to a branch of the first pipeline via a first pressure transmitter 3. A turbine flow meter 5 is also installed on the first pipeline. The status of the pipeline or cylinder group is monitored by connecting the pressure transmitter to the recorder and the turbine flow meter.

[0021] In one embodiment, the water bottle group 11 may be an externally pressurized heptafluoropropane bottle group, with a second pressure transmitter 10, a manual ball valve 9 and a safety valve 8 installed outside the bottle group.

[0022] Before implementing this utility model, the debugging steps are as follows:

[0023] 1) Press Figure 1 Assemble a 180-liter external pressure heptafluoropropane bottle assembly and fill it with 140 liters of water.

[0024] 2) First, fix all equipment and pipelines except for the carbon dioxide cylinder group. After installation, perform a 6MPa strength test on the pipelines.

[0025] 3) The carbon dioxide cylinder assembly is filled with 42 kg.

[0026] 4) Place the carbon dioxide cylinder assembly in a high and low temperature circulating chamber and keep it at -5℃ to -6℃. Test the pressure of the carbon dioxide cylinder assembly to be about 3MPa.

[0027] 5) Install the carbon dioxide cylinder assembly in the pipeline, close the liquid inlet shut-off valve 7 of the external pressure heptafluoropropane cylinder assembly, open the vent shut-off valve 12 and the carbon dioxide cylinder head valve 2, slowly open the first shut-off valve 4, and close the carbon dioxide cylinder head valve 2 and the vent shut-off valve 12 after the adjustment is qualified.

[0028] 6) Open the inlet shut-off valve 7 and the outlet shut-off valve of the external pressure heptafluoropropane bottle group.

[0029] 7) Finally, open valve 2 on the carbon dioxide bottle head to release the carbon dioxide mixture.

[0030] This invention utilizes the property that carbon dioxide absorbs a large amount of latent heat when it undergoes a phase change (from liquid to gas) at a specific temperature. Normally, the carbon dioxide is stored at -5℃ to -6℃ to store energy. When a fire occurs, a spray device propels a mixture of carbon dioxide and water to the fire scene. During the phase change, the carbon dioxide absorbs heat, generating a tremendous propellant force, causing the spray height to reach heights impossible for ordinary fire extinguishing devices. Simultaneously, the extinguishing medium also isolates oxygen and inhibits combustion reactions, thereby achieving the purpose of extinguishing the fire.

[0031] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A fire extinguishing device utilizing the gas-liquid conversion of carbon dioxide, comprising a carbon dioxide cylinder assembly (1), wherein the carbon dioxide cylinder assembly (1) is filled with carbon dioxide, characterized in that... It also includes a water bottle group (11), the carbon dioxide bottle group (1) and the water bottle group (11) are connected by a first pipeline, one end of the first pipeline is connected to the bottle head valve (2) of the carbon dioxide bottle group, and the other end is connected to the inlet stop valve (7) of the water bottle group. The outlet of the water bottle group is provided with an outlet pipe and an outlet stop valve. The carbon dioxide bottle group (1) is placed in a high and low temperature circulating chamber and kept at -5℃ to -6℃.

2. The fire extinguishing device utilizing carbon dioxide gas-liquid conversion according to claim 1, characterized in that... The pressure of the carbon dioxide cylinder group (1) is 3 MPa.

3. A fire extinguishing device utilizing carbon dioxide gas-liquid conversion according to claim 2, characterized in that... The first pipeline is also equipped with a first shut-off valve (4) and a vent shut-off valve (12).

4. A fire extinguishing device utilizing carbon dioxide gas-liquid conversion according to any one of claims 1-3, characterized in that... A branch of the first pipeline is connected to a recorder (13) via a pressure transmitter.

5. A fire extinguishing device utilizing carbon dioxide gas-liquid conversion according to claim 1, characterized in that... A siphon tube (14) is installed inside the carbon dioxide cylinder group (1).

6. A fire extinguishing device utilizing carbon dioxide gas-liquid conversion according to claim 1, characterized in that... A turbine flow meter (5) is also installed on the first pipeline.

7. A fire extinguishing device utilizing carbon dioxide gas-liquid conversion according to claim 1, characterized in that... The water bottle group (11) is an externally pressurized heptafluoropropane bottle group, and a manual ball valve (9) and a safety valve (8) are installed on the outside of the bottle group.

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