FIRE-FIGHTING FOAM STOCK TANK

Abstract

A fire-fighting foam stock tank includes a stock solution tank, a bladder set inside the stock solution tank, and a liquid collecting pipe installed inside the bladder. The stock solution tank has a first end tank wall provided with a first maintenance hole and a first hole cover. There is a hole plug on the inner surface of the first hole cover, so that the hole plug extends into the first maintenance hole until it is close to the inner wall surface of the stock solution tank, so that the inner wall surface is kept flat. The liquid collecting pipe is a T-shaped pipe composed of a first pipe section and a second pipe section. The bladder fits the liquid collecting pipe shape.

Claims

1. A fire-fighting foam stock tanks, comprising: a stock solution tank comprising a first end tank wall provided with a first maintenance hole and a first hole cover, a second end tank wall provided with second maintenance hole and a second hole cover, an upper tank wall provided with a foam injection hole and a water inlet hole, and a lower tank wall provided with a foam injection hole and a drainage hole; a bladder being a hollow bag set inside said stock solution tank and used to inject a foam stock solution from said foam injection holes; and a liquid collecting pipe incorporated in said bladder and used to divert the foam stock solution in said bladder when said bladder is compressed; wherein: said first hole cover comprises a flange and a hole plug protruding from an inner surface of said flange, said flange being locked around said first maintenance hole, said hole plug extending into said first maintenance hole to close to an inner wall surface of said first end tank wall of said stock solution tank; said bladder comprises a first side surface, which is a closed bladder wall facing said first maintenance hole of said stock solution tank, an upper end surface and a lower end surface respectively connected to said foam injection holes, and a second side surface extending toward said second maintenance hole of said stock solution tank and combined with said second maintenance hole. said liquid collecting pipe comprises a first pipe section and a second pipe section, said first pipe section being vertically connected between said two foam injection holes of said stock solution tank, said second pipe section being transversely disposed with one end thereof connected to said first pipe section and an opposite end thereof connected to said second maintenance hole.

2. The fire-fighting foam stock tank as claimed in claim 1, wherein said hole plug of said first hole cover has an end surface flush with an inner wall surface of said first end tank wall of said stock solution tank and is used to resist said first side surface when said bladder expands.

3. The fire-fighting foam stock tank as claimed in claim 2, wherein said first pipe section and said second pipe section of said liquid collecting pipe each comprise a plurality of connecting pipes and pipe joints, the pipe wall of each said connecting pipe being provided with a plurality of openings, said first pipe section and said second pipe section being connected together with a three-way joint to form a T-shaped pipe.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG. 1 is a schematic cross-sectional view of a preferred embodiment of the fire-fighting foam stock tank of the present invention.

[0013] FIG. 2 is a three-dimensional schematic view of the preferred embodiment of the fire-fighting foam stock tank of the present invention.

[0014] FIG. 3 is an exploded schematic diagram of the preferred embodiment of the stock solution tank and the first hole cover of the present invention.

[0015] FIG. 4 is a schematic diagram of the first maintenance hole of the present invention providing personnel access.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Referring to FIGS. 1, 2 and 3, the fire-fighting foam stock tank of the present invention is a fire-fighting foam stock tank used to store fire-fighting foam stock solution. When the fire-fighting foam stock solution needs to be used, the fire-fighting foam stock tank is squeezed out by the water pressure injected into the tank, its preferred embodiment comprises a stock solution tank 10, a bladder 20 and a liquid collecting pipe 30.

[0017] The stock solution tank 10 is a cylindrical tank formed by welding steel plates, which is preferably implemented as a horizontal structure. A first end tank wall of the stock solution tank 10 is provided with a first maintenance hole 11 and a first hole cover 12. A second end tank wall of the stock solution tank 10 is provided with a second maintenance hole 13 and a second hole cover 14. An upper tank wall and a lower tank wall of the stock solution tank 10 are respectively provided with a foam injection hole 15, and the upper tank wall is additionally provided with a water inlet hole 16, and the lower tank wall is additionally provided with a drainage hole 17. The water inlet hole 16 is used to connect to a water source to allow water to flow into the stock solution tank 10, and the drainage hole 17 is used to discharge the water in the stock solution tank 10.

[0018] The bladder 20 is a hollow bag set inside the stock solution tank 10, which is used to inject the foam stock solution from the foam injection hole 15, so that the bladder 20 is expanded and filled with the foam stock solution and stored in the stock solution tank 10. The liquid collecting pipe 30 is a pipe body incorporated in the bladder 20. When water flows through the water inlet hole 16 into the stock solution tank 10, the water pressure in the stock solution tank 10 can compress the bladder 20, so that the foam stock solution in the bladder 20 flows to the liquid collecting pipe 30, then flows out from the liquid collecting pipe 30 and the foam injection hole 15 and then mixes with water in other pipelines to form a foam liquid for fire fighting.

[0019] Referring to FIGS. 1 and 3 again, the improved feature of the present invention is outlined hereinafter. The first hole cover 12 of the stock solution tank 10 comprises a flange 121 and a hole plug 122 protruding from the inner surface of the flange 121. The flange 121 is used to lock the flange ring 111 around the first maintenance hole 11. The hole plug 122 has a diameter slightly smaller than the first maintenance hole 11, so that the hole plug 122 extends into the first maintenance hole 11 until its end surface is close to the inner wall surface of the first end tank wall of the stock solution tank 10. Preferably, the end surface 123 of the hole plug 122 of the first hole cover 12 is flush with the inner wall surface of the first end tank wall of the stock solution tank 10, so that the end surface 123 of the hole plug 122 is used to resist the first side surface 21 of the bladder 20 when it is expanded.

[0020] The first side surface 21 of the above-mentioned bladder 20 is the closed bag wall facing the first maintenance hole 11 of the stock solution tank 10. The upper and lower end surfaces of the bladder 20 are connected to the foam injection hole 15. The second side surface of the bladder 20 extends toward the second maintenance hole 13 of the stock solution tank 10, and is combined with the second maintenance hole 13. The liquid collecting pipe 30 comprises a first pipe section 31 and a second pipe section 32. The first pipe section 31 is vertically connected between the two foam injection holes 15 of the stock solution tank 10. The second pipe section 32 is transversely disposed with one end thereof connected to the first pipe section 31, and an opposite end thereof connected to the second maintenance hole 13. The first pipe section 31 and the second pipe section 32 each preferably comprise a plurality of connecting pipes 33 and pipe joints 34, and the pipe wall of each of the connecting pipes 33 is provided with a plurality of openings 331. Utilize a three-way joint 35 to connect and combine the first pipe section 31 and the second pipe section 32, so that the liquid collecting pipe 30 forms a T-shaped pipe.

[0021] The present invention improves the vertical first pipe section 31 and the horizontal second pipe section 32 of the liquid collecting pipe 30 into a T-shaped pipe structure, and improves the bladder 20 to adapt to the shape of the liquid collecting pipe 30, so that the first side surface 21 facing the first maintenance hole 11 is a closed bag wall structure. In this way, the structure of the first maintenance hole 11 at the first end of the stock solution tank 10 is an unobstructed structure for people to enter. It uses the first hole cover 12 to cover the first maintenance hole 11, so that maintenance personnel can enter and exit smoothly (as shown in FIG. 4), without disassembling the liquid collecting pipe 30, so it can easily enter the stock solution tank for maintenance.

[0022] In addition, the hole plug 122 of the first hole cover 12 of the present invention extends into the first maintenance hole 11 until its end surface 123 is close to the inner wall surface of the first end tank wall of the stock solution tank 10. When the bladder 20 is injected into the fire fighting foam stock solution and swells, it can prevent the first side surface 21 of the bladder 20 from being squeezed into the first maintenance hole 11 to cause the risk of rupture, thereby achieving the effect of preventing the rupture of the bladder.

[0023] Although a particular embodiment of the invention has been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.