A portable compressed air foam fire extinguishing system for boats

Abstract

A portable compressed air foam fire extinguishing system for boats includes a first foam tank, a second foam tank, a diaphragm pump, a water inlet, a proportioner, and a gas-liquid mixer. A foam switching valve is provided between the first and second foam tanks. The output of the foam switching valve is connected to the input end b1 of the proportioner via a pipeline. The water inlet is connected to the input end of the diaphragm pump via a pipeline. The input end x2 of the diaphragm pump is connected to a first compressed air pipe. The output end of the diaphragm pump is connected to the input end b2 of the proportioner via a pipeline. The output end of the proportioner is connected to the input end of the gas-liquid mixer via a pipeline. The input end of the gas-liquid mixer is connected to a fourth compressed air pipe. The output end of the gas-liquid mixer is connected to the extinguishing agent outlet via a pipeline. Compressed air is used as the driving force to power the transport of water and foam concentrate, and is also used for mixing and spraying the compressed air and the concentrate, ensuring that the entire operation is spark-free, smoke-free, and exhaust-free.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting equipment technology, specifically a portable compressed air foam fire extinguishing system for boats. Background Technology

[0002] Existing small boat firefighting technologies mainly rely on hand-operated pumps or floating pumps for water intake, which have the following drawbacks:

[0003] 1. The hot air ejected from the exhaust port of the hand pump is incompatible with the heat-resistant materials of the boat's airbags, chassis, etc., which can easily cause safety hazards;

[0004] 2. The floating pump is prone to stalling and water interruption when filling with water, making it impossible to maintain a continuous water supply and affecting the execution of firefighting tactics;

[0005] 3. The recoil is large when using pure water or traditional foam spray, causing small boats to shift and making it difficult to accurately aim at the fire.

[0006] 4. Pure water and ordinary foam have poor wall adhesion effects, cannot achieve continuous cooling and fire extinguishing functions, and have low fire extinguishing efficiency;

[0007] 5. Switching to foam water spraying requires a PQ8 foam gun and siphon hose, and going ashore to extinguish fires requires carrying AB-class foam buckets, which is cumbersome and restricts the flexibility of movement. Utility Model Content

[0008] The purpose of this invention is to provide a portable compressed air foam fire extinguishing system for boats, in order to solve the problems of exhaust heat contradiction, easy water cut-off, large recoil force, poor wall adhesion effect, and cumbersome operation in existing small boat fire extinguishing technologies.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A portable compressed air foam fire extinguishing system for boats includes a first foam tank, a second foam tank, a diaphragm pump, a water inlet, a proportioning mixer, and a gas-liquid mixer. A foam switching valve is provided between the first and second foam tanks. The output end a1 of the foam switching valve is connected to the input end b1 of the proportioning mixer via a pipeline. The water inlet is connected to the input end x1 of the diaphragm pump via a pipeline. The input end x2 of the diaphragm pump is connected to a first compressed air pipe C1. The output end x3 of the diaphragm pump is connected to the input end b2 of the proportioning mixer via a pipeline. The output end b3 of the proportioning mixer is connected to the input end d1 of the gas-liquid mixer via a pipeline. The input end d2 of the gas-liquid mixer is connected to a fourth compressed air pipe C4. The output end d3 of the gas-liquid mixer is connected to the extinguishing agent outlet via a pipeline.

[0011] In one possible implementation, a bubble switching valve is provided between the diaphragm pump and the proportioning mixer. The upper end of the bubble switching valve is connected to the second compressed air pipe C2 and the third compressed air pipe C3, and the second compressed air pipe C2 and the third compressed air pipe C3 are connected in parallel.

[0012] In one possible implementation, a check valve is provided between the proportioning mixer and the gas-liquid mixer.

[0013] In one possible implementation, a pressure gauge is provided between the gas-liquid mixer and the extinguishing agent outlet.

[0014] In one possible implementation, a first waste outlet is provided below the foam switching valve, and a foam venting valve is provided between the first waste outlet and the foam switching valve.

[0015] In one possible implementation, a second waste outlet is provided between the bubble switching valve and the proportioning mixer, and a system vent valve is provided between the second waste outlet and the bubble switching valve.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. Utilizing compressed air as the driving force serves two purposes: firstly, it provides power for the transport of water and foam concentrate; secondly, it is used for the mixing and spraying of compressed air and the mixture, ensuring that the entire working process is spark-free, smoke-free, and exhaust-free.

[0018] 2. By mixing different types of foam extinguishing agents and then mixing them with water, and controlling the compressed air flow at each stage through various valves, the generated compressed air is evenly mixed with the water / foam mixture, resulting in strong adhesion and excellent cooling effect, which is conducive to rapid fire extinguishing on boats. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] In the diagram: 1. First foam tank, 2. Second foam tank, 3. Foam switching valve, 4. Water inlet, 5. Foam drain valve, 6. First waste outlet, 7. Diaphragm pump, 8. Water-foam switching valve, 9. Proportioning mixer, 10. System drain valve, 11. Second waste outlet, 12. Check valve, 13. Gas-liquid mixer, 14. Extinguishing agent outlet, 15. Pressure gauge, C1. First compressed air pipe, C2. Second compressed air pipe, C3. Third compressed air pipe, C4. Fourth compressed air pipe. Detailed Implementation

[0021] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0022] like Figure 1 As shown, a portable compressed air foam fire extinguishing system for boats includes a first foam tank 1, a second foam tank 2, a diaphragm pump 7, a water inlet 4, a proportioning mixer 9, and a gas-liquid mixer 13. A foam switching valve 3 is provided between the first foam tank 1 and the second foam tank 2. The output end a1 of the foam switching valve 3 is connected to the input end b1 of the proportioning mixer 9 through a pipeline. The water inlet 4 is connected to the input end x1 of the diaphragm pump 7 through a pipeline. The input end x2 of the diaphragm pump 7 is connected to a first compressed air pipe C1. The output end x3 of the diaphragm pump 7 is connected to the input end b2 of the proportioning mixer 9 through a pipeline. The output end b3 of the proportioning mixer 9 is connected to the input end d1 of the gas-liquid mixer 13 through a pipeline. The input end d2 of the gas-liquid mixer 13 is connected to a fourth compressed air pipe C4. The output end d3 of the gas-liquid mixer 13 is connected to the extinguishing agent outlet 14 through a pipeline. A bubble switching valve 8 is provided between the diaphragm pump 7 and the proportioning mixer 9. The upper end of the bubble switching valve 8 is connected to the second compressed air pipe C2 and the third compressed air pipe C3, which are connected in parallel. A check valve 12 is provided between the proportioning mixer 9 and the gas-liquid mixer 13. A pressure gauge 15 is provided between the gas-liquid mixer 13 and the extinguishing agent outlet 14. A first exhaust port 6 is provided below the foam switching valve 3, and a foam venting valve 5 is provided between the first exhaust port 6 and the foam switching valve 3. A second exhaust port 11 is provided between the bubble switching valve 8 and the proportioning mixer 9, and a system venting valve 10 is provided between the second exhaust port 11 and the bubble switching valve 8.

[0023] In operation, Class A foam concentrate is contained in the first foam tank, and Class B foam concentrate is contained in the second foam tank. A foam switching valve is used to adjust the type and real-time flow rate of the foam concentrate entering the pipeline, ensuring that the two different foam concentrates (Class A and Class B) reach the required ratio in the proportioning mixer. Compressed air from the first compressed air pipe C1 is used as the driving force to operate the diaphragm pump, drawing water into the pipeline. The compressed air in the first compressed air pipe serves as the power source for the diaphragm pump. When the water from the diaphragm pump reaches the foam switching valve, the compressed air in the second compressed air pipe C2 controls the water output, and the compressed air in the third compressed air pipe C3 controls the foam output. After switching via the foam switching valve, part of the water enters the proportioning mixer to mix with the foam, while the other part is input into the gas-liquid mixer for secondary mixing. The compressed air in the fourth compressed air pipe C4 is used to control the wetness of the mixture in the gas-liquid mixer, ensuring that the extinguishing agent discharged from the outlet meets the extinguishing pressure requirements.

[0024] In this invention, the diameter of each compressed air pipe is 10mm, the pressure of the compressed air inside the pipe is 1-8 bar, and the pipeline uses a 25mm diameter pipe. The proportioning mixer 9 can be a pipeline-type foam proportioning mixer.

[0025] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", "left and right", "front and back", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A portable compressed air foam extinguishing system for boats, characterized in that The device includes a first foam tank, a second foam tank, a diaphragm pump, a water inlet, a proportioning mixer, and a gas-liquid mixer. A foam switching valve is provided between the first and second foam tanks. The output end a1 of the foam switching valve is connected to the input end b1 of the proportioning mixer via a pipeline. The water inlet is connected to the input end x1 of the diaphragm pump via a pipeline. The input end x2 of the diaphragm pump is connected to a first compressed air pipe C1. The output end x3 of the diaphragm pump is connected to the input end b2 of the proportioning mixer via a pipeline. The output end b3 of the proportioning mixer is connected to the input end d1 of the gas-liquid mixer via a pipeline. The input end d2 of the gas-liquid mixer is connected to a fourth compressed air pipe C4. The output end d3 of the gas-liquid mixer is connected to the extinguishing agent outlet via a pipeline.

2. The portable compressed air foam extinguishing system for boats as claimed in claim 1, wherein, A bubble switching valve is provided between the diaphragm pump and the proportioning mixer. The upper end of the bubble switching valve is connected to the second compressed air pipe C2 and the third compressed air pipe C3. The second compressed air pipe C2 and the third compressed air pipe C3 are connected in parallel.

3. The portable compressed air foam fire extinguishing system for boats according to claim 2, characterized in that, A check valve is provided between the proportioning mixer and the gas-liquid mixer.

4. The portable compressed air foam extinguishing system for boats as claimed in claim 3, wherein, A pressure gauge is provided between the gas-liquid mixer and the extinguishing agent outlet.

5. The portable compressed air foam extinguishing system for boats as claimed in claim 4, wherein, The foam switching valve is provided with a first waste outlet below it, and a foam venting valve is provided between the first waste outlet and the foam switching valve.

6. The portable compressed air foam extinguishing system for boats as claimed in claim 5, wherein, A second waste outlet is provided between the bubble switching valve and the proportioning mixer, and a system vent valve is provided between the second waste outlet and the bubble switching valve.

Images