Cabin fire extinguishing device

Abstract

The utility model discloses a cabin fire extinguishing device which comprises a tank body, a flow inlet pipe and a mixer, a capsule is installed inside the tank body, a flow guide pipe is connected between the flow inlet pipe and the mixer, the tank body is communicated with the flow guide pipe through a first control pipe, the capsule is communicated with the mixer through a second control pipe, and the mixer comprises a mixing pipe and a flow guide cylinder. The end, away from the flow guide pipe, of the mixing pipe is connected with the flow outlet pipe, a second annular groove is formed in an opening in the other end of the mixing pipe and located in an inner connecting opening of the mixing pipe and the flow guide pipe, a flow guide cylinder is installed in the second annular groove, and a second flange on the flow guide cylinder is matched with the second annular groove in size. Blades are mounted on the bracket through a rotating shaft; a support is installed at the outward extending position of an outlet of the guide cylinder, blades are installed on the support, water flow is sprayed out to push the blades to rotate, and the blades rotate to evenly mix foam and water. The detachable filter screen is installed at the connecting port of the flow guide pipe and the corrugated pipe to filter impurities and prevent the valve from being blocked.

Description

Technical Field

[0001] The utility model relates to the field of ship fire-fighting equipment, in particular to a cabin fire-fighting extinguishing device. Background Art

[0002] The cabin fire-fighting device is a device that uses a mixture of foam and water or water or foam to extinguish fire on the cabin surface. The purpose of using the fire-fighting device is to extinguish fire inside the cabin and reduce the spread of fire, thereby facilitating the escape of internal personnel. The cabin fire-fighting device is a device that uses a mixture of foam and water or water or foam to extinguish fire on the cabin surface on board.

[0003] Foam water mixing is the process of mixing water and fire-retardant foam in a certain proportion to improve the fire extinguishing effect. It is generally composed of a mixer, a flow meter, a valve, etc. Its principle is to use the kinetic energy of water flowing through the mixer to absorb the fire-retardant foam into the mixer and mix it evenly with water.

[0004] Chinese patent document CN116920648A discloses a pressure-type proportional mixing device, which relates to the field of mixing devices, and in particular to a pressure-type proportional mixing device, the structure of which includes: a foam tank, which is connected to a mixer through a first control pipe and a second control pipe respectively, and a sewage pipe is installed at the bottom of the foam tank. The mixer includes an inlet pipe and a mixing pipe, and an inner sleeve that is radially movable is provided at the connection between the mixing pipe and the inlet pipe. The improved device controls the movement of the inner sleeve on the surface of the slide groove through a driver, thereby separating the inner sleeve from the gasket, and the water flows through the gap of the retaining ring into the guide hole to flush the area of ​​the sliding sleeve that is prone to corrosion, thereby reducing foam residue, and since most of the water flows through the tube body of the sliding sleeve and the guide sleeve, negative pressure will still be generated, and the negative pressure increases the flow rate of the water flowing through the guide hole, thereby improving the cleaning effect.

[0005] In the prior art, the foam solvent in the capsule cannot be mixed evenly with water; since fire-fighting water often contains various impurities and particles, it is easy for them to enter the sliding surface formed by the valve core and the valve hole, which can easily cause the sliding of the valve core to be obstructed or even stuck, affecting fire safety. Utility Model Content

[0006] In response to the shortcomings of the existing technology, the utility model provides a cabin fire extinguishing device, in which a bracket is installed at the extension of the outlet of the guide tube, and blades are installed on the bracket. When the water flow and foam are mixed, the blades are pushed to rotate, and the rotation of the blades makes the foam and water evenly mixed; a bellows is connected between the inlet pipe and the guide pipe, and a filter is installed at the connection between the guide pipe and the bellows to filter impurities and avoid valve clogging.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A cabin fire extinguishing device includes a tank body, an inlet pipe and a mixer, a capsule is installed inside the tank body, a guide pipe is connected between the inlet pipe and the mixer, the tank body is connected to the guide pipe through a first control pipe, and the capsule is connected to the mixer through a second control pipe, the mixer includes a mixing pipe and a guide tube, the other end of the mixing pipe away from the guide pipe is connected to the outlet pipe, a second annular groove is provided on an opening at one end of the mixing pipe, the second annular groove is located at an inner connection between the mixing pipe and the guide pipe, the guide tube is installed in the second annular groove, a second flange on the guide tube is adapted to the size of the second annular groove, the outer periphery of the other end of the guide tube extends axially outward to form a bracket, and a blade is installed on the bracket via a rotating shaft;

[0009] As a preferred technical solution of the present invention, a bellows is installed between the inlet pipe and the guide pipe, a first annular groove is provided on the opening of the guide pipe adjacent to the bellows, the first annular groove is located at the inner connection between the guide pipe and the bellows, a filter is installed in the first annular groove, and the first flange at the opening of the filter is adapted to the size of the first annular groove;

[0010] As a preferred technical solution of the present invention, a first valve is installed on the first control pipe, and a second valve and a one-way valve are installed on the second control pipe;

[0011] As a preferred technical solution of the present invention, a first drainage pipe is installed at the bottom of the tank body, and a third valve is installed on the first drainage pipe; a second drainage pipe is installed at the bottom of the capsule, and a fourth valve is installed on the second drainage pipe;

[0012] As a preferred technical solution of the present invention, the second annular groove extends radially outward to form a limiting groove, and the second flange extends radially outward to form a protrusion, and the size of the protrusion is adapted to the size of the limiting groove;

[0013] As a preferred technical solution of the present invention, a nozzle is installed at the opening of the second control tube, the nozzle is located inside the mixing tube, and the nozzle is located between the guide tube and the blade;

[0014] As a preferred technical solution of the present invention, the second control tube located inside the tank body is configured as a hose;

[0015] As a preferred technical solution of the utility model, the capsule is a PVC capsule or a rubber capsule;

[0016] As a preferred technical solution of the present invention, a first pressure gauge is installed on the guide tube, and a second pressure gauge is installed on the mixing tube;

[0017] As a preferred technical solution of the present invention, the bracket includes several axial support rods surrounding the outer periphery of the guide tube outlet, and the ends of the axial support rods away from the guide tube converge toward the axis of the guide tube to form several radial support rods, and a rotating shaft is installed on the radial support rods, and blades are installed on the rotating shaft.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. Install a guide tube between the guide tube and the bellows. The guide tube has a trumpet-shaped opening, with a large opening at the inlet end and a small opening at the outlet end. The middle part is a conical arc surface. The outer periphery of the inlet end of the guide tube extends radially outward to form a second flange limit block, and the outer periphery of the outlet end of the guide tube extends axially outward to form a bracket, and blades are installed on the bracket through a rotating shaft; a second annular groove limit groove is provided at the opening of the mixing tube adjacent to the guide tube, and the second flange limit block is installed in the second annular groove limit groove; a nozzle is installed at the opening of the second control tube, and the nozzle is located inside the mixing tube, and the nozzle is between the guide tube and the blades. The foam sprayed by the nozzle converges with the water flow guided out of the guide tube to form an impact mixing. The nozzle is flat and narrow, and the foam sprayed is widely distributed and has a large contact area with the water flow; the water flow drives the blades to rotate, and when the water flow and the foam are mixed, the blades rotate to mix the foam water evenly and then guide it to the outlet pipe;

[0020] 2. Connect a bellows between the inlet pipe and the guide pipe. A first annular groove is provided on the inner ring of the opening of the guide pipe adjacent to one end of the bellows. The first annular groove is located at the connection between the guide pipe and the bellows. A filter is installed in the first annular groove. The filter is installed in the guide pipe. The outer periphery of the filter opening extends radially outward to form a first flange, which is installed in the first annular groove. A filter is installed at the connection between the guide pipe and the bellows to filter impurities and prevent valve clogging. The filter filters the water introduced by the inlet pipe to prevent impurities in the fire water from clogging the valve body. The bellows' elasticity is used to adjust its position, making it easy to remove and remove the filter, clean the impurities inside the filter, ensure the cleanliness of the valve body and pipeline, and facilitate the normal operation of the firefighting system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the assembly structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the disassembled structure of the guide pipe and filter screen of the utility model;

[0023] Figure 3 This is a schematic diagram of the split structure of the mixer of the utility model;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the mixer of the utility model when assembled;

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of the capsule and the can body of the utility model when assembled;

[0026] In the figure: 11, tank body; 12, support leg; 13, inspection hole; 14, capsule; 15, support plate; 16, inlet pipe; 17, first control pipe; 18, second control pipe; 19, first sewage pipe; 20, second sewage pipe; 21, first valve; 22, second valve; 23, third valve; 24, fourth valve; 25, one-way valve; 26, first pressure relief valve; 27, second pressure relief valve; 28, bellows; 29. Draft tube; 30. Mixing tube; 31. First pressure gauge; 32. Second pressure gauge; 33. Filter; 34. First annular groove; 35. First flange; 36. Hose; 37. Draft tube; 38. Second flange; 39. Limit block; 40. Limit groove; 41. Bracket; 42. Rotating shaft; 43. Blade; 44. Nozzle; 45. Scale tube; 46. Outlet pipe; 47. Mixer; 48. Second annular groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Any content not described in detail in this specification belongs to the prior art known to those skilled in the art. In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely for the purpose of facilitating the description of the utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Figure 1-Figure 5As shown in the figure, a cabin fire extinguishing device is provided, including a tank body 11, an inlet pipe 16 and a mixer 47, a capsule 14 is installed inside the tank body 11, a guide pipe 29 is connected between the inlet pipe 16 and the mixer 47, the tank body 11 is communicated with the guide pipe 29 through a first control pipe 17, and the capsule 14 is communicated with the mixer 47 through a second control pipe 18, the mixer 47 includes a mixing pipe 30 and a guide tube 37, one end of the mixing pipe 30 away from the guide pipe 29 is connected to the outlet pipe 46, and a second annular groove 48 is provided on the opening of the other end of the mixing pipe 30, the second annular groove 48 is located at the inner connection port of the mixing pipe 30 and the guide tube 29, the guide tube 37 is installed in the second annular groove 48, the second flange 38 on the guide tube 37 is adapted to the size of the second annular groove 48, and the outer periphery of the other end of the guide tube 37 extends axially outward to form a bracket 41, and a blade 43 is installed on the bracket 41 through a rotating shaft 42.

[0030] Among them, a support leg 12 is welded to the bottom of the tank body 11, and an enlarged and widened foot pad is provided at the bottom of the support leg 12, and the foot pad is connected to the bottom plate of the hull by bolts or welding.

[0031] A support plate 15 is welded to the outer wall of the tank body 11, and a guide tube 29 and a mixing tube 30 are fixedly mounted on the support plate 15; an inspection hole 13 is opened on one side of the tank body 11, which is convenient for installing or removing the capsule 14, and also for observing, inspecting and cleaning the interior of the tank body 11.

[0032] The tank body 11, the support legs 12 and the support plate 15 are all made of carbon steel or stainless steel, preferably 304 stainless steel.

[0033] A capsule 14 is installed inside the tank body 11. The pipeline inside the tank body 11 and the connecting section connecting the capsule 14 and the pipeline outside the tank body are all made of soft pipes, which are conducive to adapting to the change in length of the capsule 14 when it is expanded and contracted.

[0034] Figure 5 In the embodiment, capsule 14 is filled with foam, and a compression chamber is formed between the outer wall of capsule 14 and the inner cavity of tank body 11. This compression chamber is filled with firefighting water. The water flows through first control pipe 17 into the compression chamber, generating pressure on capsule 14. The foam inside capsule 14 is compressed and then flows through second control pipe 18 into mixer 47. A one-way valve 25 is installed on second control pipe 18 to prevent substances at the end of mixer 47 from entering capsule 14.

[0035] The capsule 14 is a PVC capsule or a rubber capsule, preferably a nitrile rubber.

[0036] A first pressure relief valve 26 is installed at the connection between the first control tube 17 and the tank body 11 to facilitate the discharge of excess pressure in the compression chamber, protecting the safety of the capsule 14 and the tank body 11. A second pressure relief valve 27 is installed at the connection between the second control tube 18 and the capsule 14 to facilitate the discharge of excess pressure in the capsule 14, protecting the safety of the capsule.

[0037] When the first pressure relief valve 26 is used, the first valve 21 needs to be closed; when the second pressure relief valve 27 is used, the second valve 22 needs to be closed.

[0038] A first pressure gauge 31 is installed on the flow guide pipe 29, and a second pressure gauge 32 is installed on the mixing pipe 30. The closing and opening of the valve are selected based on the values ​​of the pressure gauges.

[0039] A first drain pipe 19 is mounted at the bottom of the tank 11, and a third valve 23 is installed on the first drain pipe 19. A second drain pipe 20 is mounted at the bottom of the capsule 14, and a fourth valve 24 is installed on the second drain pipe 20. A scale tube 45 is mounted on the second drain pipe 20. The scale tube 45 is vertically arranged and is taller than the capsule 14. The scale tube 45 is transparent and has scale lines to facilitate observation and reading.

[0040] Figure 2 In the embodiment, a bellows 28 is installed between the inlet pipe 16 and the guide pipe 29. The bellows 28 is made of rubber or stainless steel, preferably 304 stainless steel, to compensate for distance or gap during disassembly or installation.

[0041] A first annular groove 34 is provided on the inner ring of the opening of the guide pipe 29 at one end adjacent to the inlet pipe 16. The first annular groove 34 is located at the connection port of the guide pipe 29 and the bellows 28. A filter screen 33 is installed in the first annular groove 34. The filter screen 33 is installed in the guide pipe 29. The outer periphery of the opening of the filter screen 33 extends radially outward to form a first flange 35. The first flange 35 is installed in the first annular groove 34.

[0042] During use, the filter screen 33 filters the water flow introduced by the inlet pipe 16 to prevent impurities in the fire water from clogging the lower valve body; when cleaning is required, the connection between the bellows 28 and the guide pipe 29 is disassembled, and the position of the bellows 28 is adjusted by using the elasticity of the bellows 28 to facilitate the removal of the filter screen 33. After cleaning the impurities inside the filter screen 33, it is re-installed into the guide pipe 29 and then connected to the bellows 28 for fixed use.

[0043] Figure 3 In the embodiment, the mixer 47 includes a mixing tube 30 and a guide tube 37. The end of the mixing tube 30 away from the guide tube 29 is connected to the outlet pipe 46. After the foam water is mixed and processed, it is transported to the fire hydrant or fire sprinkler through the outlet pipe 46.

[0044] A second annular groove 48 is provided on an opening of one end of the mixing tube 30 adjacent to the guide tube 29. The second annular groove 48 is located at the connection between the mixing tube 30 and the guide tube 29, and the second annular groove 48 is located at the inner opening of the mixing tube 30.

[0045] A guide tube 37 is installed in the mixing tube 30. The guide tube 37 has a trumpet-shaped opening, a large opening at the inlet end, a small opening at the outlet end, and a conical arc surface in the middle. The outer periphery of the large opening end of the guide tube 37 extends radially outward to form a second flange 38, and the outer periphery of the small opening end of the guide tube 37 extends axially outward to form a bracket 41, and a blade 43 is installed on the bracket 41 through a rotating shaft 42.

[0046] Figure 3-Figure 4 In the embodiment, the bracket 41 includes four or six axial support rods, preferably four, surrounding the outer periphery of the small end of the guide tube 37. The ends of the axial support rods away from the guide tube 37 converge perpendicularly to the axis of the guide tube 37 to form radial support rods. A rotating shaft 42 is installed at the convergence of the radial support rods, and blades 43 are installed on the rotating shaft 42.

[0047] A nozzle 44 is installed at the opening of the second control pipe 18. The nozzle 44 is located inside the mixing pipe 30 and between the guide tube 37 and the blade 43. The foam sprayed by the nozzle 44 converges with the water flow from the guide tube 37 to form an impact mixing.

[0048] The nozzle 44 is in the shape of a flat, narrow duckbill, which helps the foam in the second control tube 18 to be dispersed after leaving the nozzle, thereby increasing the contact area and facilitating mixing.

[0049] The second flange 38 is mounted in the second annular groove 48, and the blades 43 are coaxially arranged with the guide tube 37. When the water flows through the guide tube 37 and hits the blades 43, the blades 43 rotate under the action of the water flow, and the rotation of the blades 43 further stirs and mixes the water flow and foam.

[0050] The second annular groove 48 extends radially outward to define a limiting groove 40, and the second flange 38 extends radially outward to form a protrusion that matches the size of the limiting groove 40. During use, the protrusion on the second flange 38 fits within the limiting groove 40 of the second annular groove 48, limiting the circumferential rotation of the guide tube 37, the bracket 41, and the blades 43.

[0051] The working principle of this utility model:

[0052] After the fire water passes through the bellows 28 from the inlet pipe 16, it enters the guide pipe 29 through the filter screen 33. The filter screen 33 is detachably installed in the guide pipe 29. The filter screen 33 filters the water flow introduced by the inlet pipe 16; when cleaning is needed, the connection between the bellows 28 and the guide pipe 29 is disassembled, and the position of the bellows 28 is adjusted by using the elasticity of the bellows 28. The filter screen 33 is removed, the impurities inside the filter screen 33 are cleaned, and then it is reinstalled into the guide pipe 29, and then the bellows 28 is fixedly connected and continued to be used.

[0053] After passing through the filter 33, the fire water is divided into two branches. One branch enters the tank body 11 through the first control pipe 17. The water flow entering the tank body 11 compresses the capsule 14, causing the foam in the capsule 14 to be discharged from the nozzle 44 to the inner cavity of the mixing tube 30 through the second control pipe 18; the other branch passes through the guide pipe 29 and enters the guide tube 37. The water is sprayed from the small mouth end of the guide tube 37 to impact the blade 43, causing the blade 43 to rotate. The nozzle 44 is located between the guide tube 37 and the nozzle 44. The foam sprayed from the nozzle 44 is mixed with the water flow sprayed from the guide tube 37 and then rotated and stirred by the blade 43. After being fully mixed, it is transported to the cabin fire hydrant or cabin fire sprinkler through the outlet pipe 46.

[0054] The above embodiments are used to illustrate the technical concept of the present invention. However, the present invention is not limited to the above embodiments, which does not mean that the present invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that any improvements to the present invention fall within the scope of protection and disclosure of the present invention.

Claims

1. A cabin fire extinguishing device, comprising a tank body (11), an inlet pipe (16) and a mixer (47), wherein a capsule (14) is installed inside the tank body (11), a flow guide pipe (29) is connected between the inlet pipe (16) and the mixer (47), the tank body (11) is communicated with the flow guide pipe (29) through a first control pipe (17), and the capsule (14) is communicated with the mixer (47) through a second control pipe (18), characterized in that: The mixer (47) comprises a mixing tube (30) and a flow guide tube (37). One end of the mixing tube (30) away from the flow guide tube (29) is connected to the outlet tube (46). A second annular groove (48) is provided on the opening of the other end of the mixing tube (30). The second annular groove (48) is located at the inner connection port between the mixing tube (30) and the flow guide tube (29). The flow guide tube (37) is installed in the second annular groove (48). The second flange (38) on the flow guide tube (37) is adapted to the size of the second annular groove (48). The outer periphery of the other end of the flow guide tube (37) extends outward in the axial direction to form a bracket (41). A blade (43) is installed on the bracket (41) through a rotating shaft (42).

2. The cabin fire extinguishing device according to claim 1, characterized in that: A bellows (28) is installed between the inlet pipe (16) and the guide pipe (29). A first annular groove (34) is provided on the opening of the guide pipe (29) adjacent to the bellows (28). The first annular groove (34) is located at the inner connection between the guide pipe (29) and the bellows (28). A filter screen (33) is installed in the first annular groove (34). A first flange (35) at the opening of the filter screen (33) is adapted to the size of the first annular groove (34).

3. The cabin fire extinguishing device according to claim 1, characterized in that: A first valve (21) is installed on the first control pipe (17), and a second valve (22) and a one-way valve (25) are installed on the second control pipe (18).

4. The cabin fire extinguishing device according to claim 1, characterized in that: A first sewage pipe (19) is installed at the bottom of the tank body (11), and a third valve (23) is installed on the first sewage pipe (19); a second sewage pipe (20) is installed at the bottom of the capsule (14), and a fourth valve (24) is installed on the second sewage pipe (20).

5. The cabin fire extinguishing device according to claim 1, characterized in that: The second annular groove (48) extends radially outward to form a limiting groove (40), and the second flange (38) extends radially outward to form a protrusion, and the size of the protrusion is adapted to the size of the limiting groove (40).

6. The cabin fire extinguishing device according to claim 1, characterized in that: A nozzle (44) is installed at the opening of the second control tube (18). The nozzle (44) is located inside the mixing tube (30), and the nozzle (44) is located between the guide tube (37) and the blade (43).

7. The cabin fire extinguishing device according to claim 1, characterized in that: The second control pipe (18) located inside the tank (11) is configured as a hose (36).

8. The cabin fire extinguishing device according to claim 1, characterized in that: The capsule (14) is a PVC capsule or a rubber capsule.

9. The cabin fire extinguishing device according to claim 1, characterized in that: A first pressure gauge (31) is installed on the flow guide tube (29), and a second pressure gauge (32) is installed on the mixing tube (30).

10. The cabin fire extinguishing device according to claim 1, characterized in that: The bracket (41) includes a plurality of axial support rods surrounding the outer periphery of the outlet of the guide tube (37), and the ends of the axial support rods away from the guide tube (37) converge toward the axis of the guide tube (37) to form a plurality of radial support rods, and a rotating shaft (42) is installed on the radial support rods, and a blade (43) is installed on the rotating shaft (42).

Images