Bubble solution tank

Abstract

To provide a foam undiluted solution tank including a storage container capable of uniformly pressurizing a foam fire-extinguishing agent in the inside as a substitute of a diaphragm having a giant cylindrical shape.SOLUTION: Provided is a foam undiluted solution tank which stores a storage container in which a foam fire-extinguishing agent is stored, and in which pressurized water is introduced so as to cover the periphery of the storage container. The storage container has a first shape formed of a tube, and a second shape formed by connecting pack-shaped bags in parallel or in series-parallel.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a foam stock solution tank for storing a foam fire extinguishing agent, which is used in foam fire extinguishing equipment that extinguishes fires by discharging foam.

Background Art

[0002] There are various foam fire extinguishing equipments that extinguish fires by discharging foam from a foam head, a foam nozzle, etc., covering the combustion surface with foam, and by the asphyxiation effect and the cooling effect of the water contained in the foam (for example, see Non-Patent Document 1).

[0003] In various foam fire extinguishing equipments disclosed in Non-Patent Document 1, an aqueous solution in which water and a foam fire extinguishing agent are mixed at a certain ratio and air are mixed to generate foam. In a foam fire extinguishing equipment using a pressure proportioner method, a foam stock solution tank that stores and houses the foam fire extinguishing agent for generating foam is used (for example, see Non-Patent Document 2).

[0004] By using a diaphragm, the foam fire extinguishing agent can be blocked from water and air during storage. As a result, deterioration of the foam fire extinguishing agent is prevented, and long-term storage of the foam fire extinguishing agent is enabled.

Prior Art Documents

Non-Patent Documents

[0005]

Non-Patent Document 1

Non-Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] The diaphragms used in foam fire extinguishing systems are molded as large, cylindrical rubber bags. One reason for the cylindrical shape of the diaphragm is to ensure uniform pressurization of the diaphragm by filling the space between the foam concentrate tank and the diaphragm with water.

[0007] However, diaphragms, with their enormous cylindrical shape, are currently manufactured using specialized techniques, resulting in high production costs.

[0008] This disclosure is made to solve the above-mentioned problems and aims to provide a foam concentrate tank that uses a storage container capable of uniformly pressurizing the foam fire extinguishing agent inside, as a substitute for a diaphragm having a large cylindrical shape. [Means for solving the problem]

[0009] The foam concentrate tank according to this disclosure is a foam concentrate tank that houses a storage container containing foam fire extinguishing agent, and pressurized water is introduced so as to surround the storage container, wherein the storage container is formed to have a first shape formed from tubes, or a second shape formed by connecting pack-shaped bags in parallel or in series-parallel. [Effects of the Invention]

[0010] According to this disclosure, a foam concentrate tank can be obtained that uses a storage container capable of uniformly pressurizing the foam fire extinguishing agent inside, as an alternative to a diaphragm having a large cylindrical shape. [Brief explanation of the drawing]

[0011] [Figure 1] This is an explanatory diagram showing a storage container used in the foam concentrate tank according to Embodiment 1 of the present disclosure, formed as a storage container having a first shape. [Figure 2] This is an explanatory diagram showing a storage container used in the foam concentrate tank according to Embodiment 1 of the present disclosure, formed as a storage container having a second shape. [Figure 3] This is an explanatory diagram showing the overall configuration of a foam fire extinguishing system using a general pressure proportioner method, including a foam concentrate tank that stores and houses the foam fire extinguishing agent within a diaphragm. [Figure 4] Figure 3 is an explanatory diagram showing how to operate the foam fire extinguishing system during a fire. [Modes for carrying out the invention]

[0012] Hereinafter, preferred embodiments of the foam concentrate tank of this disclosure will be described with reference to the drawings. The foam concentrate tank according to this disclosure has a technical feature in that it uses a storage container having a first shape formed from tubes of the same diameter, or a second shape formed by connecting pack-shaped bags in parallel or in series-parallel, as a substitute for a conventional diaphragm, thereby enabling the foam fire extinguishing agent to be isolated from water and air, and enabling the foam fire extinguishing agent inside to be uniformly pressurized, all while being made from a general-purpose material.

[0013] Embodiment 1. First, we will explain the foam concentrate tank using a diaphragm with reference to Figures 3 and 4. Figure 3 is an explanatory diagram showing the overall configuration of a typical pressure-proportioner type foam fire extinguishing system, which includes a foam concentrate tank that stores the foam extinguishing agent for generating foam inside a diaphragm.

[0014] At all times, foam fire extinguishing agent 21 is stored in a diaphragm 20 housed in the foam concentrate tank 10. The storage pressure P2 of the foam fire extinguishing agent 21 in the diaphragm 20 is maintained at a pressure lower than the water supply system pressure P1 by a relief valve. Here, the storage pressure P2 of the foam fire extinguishing agent 21 is adjusted to have the following relationship (1). Water supply system P1 > Storage pressure P2 (1)

[0015] FIG. 4 is an explanatory diagram when the foam fire extinguishing equipment shown in FIG. 3 is operated during a fire. During a fire, when the pressurized water supply device is activated, water is pressurized and supplied to the mixer (proportioner) and the water supply valve V1.

[0016] The pressurized water supplied to the water supply valve V1 enters the foam concentrate tank 10 and fills the gap between the outside of the diaphragm 20 and the inside of the foam concentrate tank 10. Due to the water pressure of the filled pressurized water, the diaphragm 20 is compressed, and the foam fire extinguishing agent 21 inside the diaphragm 20 is pressurized and sent to the mixer (proportioner).

[0017] The mixer mixes water and the foam fire extinguishing agent at a specified mixing ratio. The aqueous solution of the foam fire extinguishing agent 21 mixed by the mixer is sent to the foam discharge outlet etc. by the water supply pressure of the pressurized water supply device, and foam is emitted, and the protected object is covered with foam, thereby extinguishing the fire.

[0018] [[ID=]11] The diaphragm 20 shown in FIGS. 3 and 4 is formed as a huge cylindrical rubber bag and is uniformly pressurized by the pressurized water filling the space between the foam concentrate tank 10 and the diaphragm 20. In Embodiment 1, a storage container that exhibits the same function as such a diaphragm 20 is used as a substitute for the diaphragm 20. Therefore, the specific configuration of the storage container according to Embodiment 1 will be described in detail using FIGS. 1 and 2.

[0019] FIG. is an explanatory diagram showing a state in which the storage container used in the foam concentrate tank according to Embodiment 1 of the present disclosure is formed as a storage container 31 having a first shape. The storage container 31 shown in FIG. 1 has a first shape formed by winding a tube having the same diameter in a spiral shape.

[0020] The foam concentrate tank 10 stores the storage container 31 in which the foam fire extinguishing agent 21 is stored and the pressurized water filled so as to cover the periphery of the storage container 31.

[0021] The tube itself can be easily formed into a shape with a uniform diameter, and can be manufactured more easily than the diaphragm 20, which is a large cylindrical rubber bag. Furthermore, with such a first shape having a uniform diameter, it is possible to apply uniform pressure to the tube with pressurized water by selecting a material and diameter that provides appropriate stiffness for the tube.

[0022] It is not a requirement that the tubes have a uniform diameter. Even if tubes with non-uniform diameters are used, they can function adequately as a substitute for a diaphragm as long as the foam fire extinguishing agent 21 can be released by pressurizing the pressurized water introduced into the foam concentrate tank 10 so as to surround the tubes while they are housed in the foam concentrate tank 10.

[0023] Therefore, the storage container 31 having the first shape shown in Figure 1 can be used as a substitute for a diaphragm having a large cylindrical shape. In particular, by using a tube, the first shape can be easily formed to match the shape of the foam concentrate tank 10.

[0024] Although not shown in the diagram, the first shape can also be formed by connecting multiple tubes in parallel, instead of forming a single tube of the same diameter in a coiled shape.

[0025] Figure 2 is an explanatory diagram showing a storage container used in a foam concentrate tank according to Embodiment 1 of the present disclosure, formed as a storage container 32 having a second shape. The storage container 32 shown in Figure 2 has a second shape formed by connecting pack-shaped bags in parallel or in series-parallel.

[0026] The foam concentrate tank 10 contains a storage container 32 in which the foam fire extinguishing agent 21 is stored, and pressurized water that surrounds the storage container 32.

[0027] Specifically, Figure 2(A) shows a state in which a storage container 32 having a second shape is formed by connecting five pack-shaped bags 32(1) to 32(5) in parallel. The pack-shaped bags themselves can be easily formed in a shape equivalent to, for example, a storage container for intravenous drips or blood, and can be manufactured more easily than the diaphragm 20, which is a large cylindrical rubber bag.

[0028] Furthermore, with this second shape, which has a pack-like structure, it is possible to apply uniform pressure to the pack using pressurized water by selecting a material and size that provides the appropriate hardness for the pack.

[0029] As shown in Figure 2(B), each of the parallel-connected pack-shaped bags 32(n) can also be formed by connecting multiple pack-shaped bags in series. In Figure 2(B), an example is shown where the parallel-connected pack-shaped bags 32(n) are formed by three pack-shaped bags 32(n,1) to 32(n,3) connected in series.

[0030] Therefore, the storage container 32 having the second shape shown in Figures 2(A) and 2(B) can be used as a substitute for the diaphragm having a large cylindrical shape.

[0031] As described above, according to Embodiment 1, the storage container for storing the foam fire extinguishing agent has a first shape formed from tubes of the same diameter, or a second shape formed by connecting pack-shaped bags in parallel or in series-parallel. The storage container according to this Embodiment 1 has the following features.

[0032] Feature 1: Ease of manufacturing Storage containers having the first or second shape can be manufactured more easily than conventionally used large cylindrical rubber diaphragms.

[0033] Feature 2: Realization of a storage function for foam fire extinguishing agents. Storage containers having either the first or second shape can also isolate the foam fire extinguishing agent from water and air, preventing deterioration of the foam fire extinguishing agent and enabling long-term storage of the foam fire extinguishing agent. Furthermore, it becomes possible to uniformly pressurize the foam fire extinguishing agent stored in the storage container with pressurized water within the foam concentrate tank.

[0034] By combining these features 1 and 2, it becomes possible to manufacture a storage container that performs the same function as a diaphragm more cheaply and easily. In particular, the storage container according to this embodiment 1, which can be easily formed from a general-purpose material, can be effectively used as a substitute for diaphragms, which require special manufacturing techniques.

[0035] In the above-described embodiment 1, the storage container was described in a case where it is formed to have a first shape formed from tubes of the same diameter, or a second shape formed by connecting pack-shaped bags in parallel or in series-parallel. However, as long as the storage container according to this disclosure combines features 1 and 2 and can be molded and pressurized uniformly, it is possible to adopt a configuration other than the first and second shapes.

[0036] Furthermore, if the storage container described herein can be adapted, the foam concentrate tank can also be made to a desired size and shape according to the installation environment or application. Therefore, the options regarding the storage method of the foam fire extinguishing agent and the installation space of the foam concentrate tank can be increased, thereby increasing the degree of design freedom in the development of new foam fire extinguishing equipment. [Explanation of symbols]

[0037] 10 Foam concentrate tank, 20 Diaphragm, 21 Foam fire extinguishing agent, 31, 32 Storage containers, 32(1)~32(5), 32(1,1)~32(1,3) Pack-shaped bags.

Claims

[Claim 1] A foam concentrate tank is provided, which houses a storage container containing foam fire extinguishing agent, and pressurized water is introduced so as to surround the storage container. The storage container is formed to have a first shape formed from a tube, or a second shape formed by connecting pack-shaped bags in parallel or in series-parallel. Foam stock tank.

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