Foam fire extinguishing device

Abstract

The invention discloses a foam fire extinguishing device which comprises a fire extinguishing agent conveying pipeline, a spraying adjusting mechanism and an orientation detection mechanism, the orientation detection mechanism comprises a liquid storage ball, a plurality of pressure pipelines and volatile liquid, the bottoms of the pressure pipelines are fixedly connected with the liquid storage ball, the volatile liquid is arranged in the liquid storage ball, and the liquid storage ball is fixedly connected with the spraying adjusting mechanism. And a turning nozzle is arranged below the spraying adjusting mechanism and communicates with the fire extinguishing agent conveying pipeline, and the volatile liquid transmits the air pressure change to the spraying adjusting mechanism through a pressure pipeline, so that the turning nozzle below the spraying adjusting mechanism rotates. According to the device, volatile liquid and a pressure pipeline are arranged, when a fire occurs in a local area, the volatile liquid in a corresponding liquid storage ball is heated to boil, then air pressure change is conducted to a spraying adjusting mechanism, the spraying adjusting mechanism controls the direction of a direction-changing spray head, and a fire source in the early stage of the fire can be sprayed and extinguished more efficiently.

Description

Technical Field

[0001] The invention relates to the technical field of fire extinguishing equipment, in particular to a foam fire extinguishing device. Background Art

[0002] The fire extinguishing system is a key safety facility that suppresses or extinguishes fires automatically or manually. Its core lies in quickly responding to fires and effectively blocking combustion conditions. Among them, the foam fire extinguishing device performs outstandingly in liquid fires such as oils and chemicals due to its unique coverage and ability to isolate oxygen - the foam layer can not only extinguish open flames, but also form an isolation barrier to prevent re-ignition. Compared with traditional water-based fire extinguishing, its cooling effect is milder, avoiding secondary risks caused by splashing high-temperature liquids. In addition, the foam fire extinguishing system can be sprayed over a large area through a fixed pipe network, which is suitable for high-risk scenarios such as oil depots and chemical plants.

[0003] However, the design of traditional foam fire extinguishing devices still has a contradiction between efficiency and reliability. Conventional systems often rely on preset pipes to cover a large area from top to bottom. Although they can quickly form a protective layer, it is difficult to accurately lock the location of the fire source, especially in complex spaces or when the fire spreads rapidly. The fire extinguishing effect may be affected by delayed spraying or uneven coverage. Although the introduction of CNC equipment to locate the flame in real time can improve accuracy, the high temperature, thick smoke and violent airflow at the fire scene can easily cause precision sensors and circuits to fail, and even cause system paralysis due to equipment damage. Therefore, in the field of fire extinguishing equipment technology, it is necessary to propose a foam fire extinguishing device that can locate the direction of the fire source and extinguish the fire efficiently. Summary of the invention

[0004] In view of the above-mentioned prior art, the present invention provides a foam fire extinguishing device, the main technical problem to be solved is how to locate the direction of the fire source for efficient fire extinguishing.

[0005] To achieve the above object, the technical solution of the embodiment of the present invention is implemented as follows:

[0006] A foam fire extinguishing device comprises a fire extinguishing agent delivery pipeline, a spraying adjustment mechanism and an orientation detection mechanism, wherein the orientation detection mechanism comprises a liquid storage ball, a pressure pipeline and a volatile liquid, wherein a plurality of pressure pipelines are provided, and the bottoms of the plurality of pressure pipelines are fixedly connected with liquid storage balls, and the volatile liquid is arranged inside the liquid storage balls, and a change-of-direction nozzle is arranged below the spraying adjustment mechanism, and the change-of-direction nozzle is connected to the fire extinguishing agent delivery pipeline, and the volatile liquid transmits the air pressure change to the spraying adjustment mechanism through the pressure pipeline, so that the change-of-direction nozzle below the spraying adjustment mechanism rotates.

[0007] Preferably, the spray adjustment mechanism includes an outer shell, a piston rod and a push block, the four sides of the push block are connected to the pressure pipe through the piston rod, the upper end of the pressure pipe is provided with a piston cylinder cooperating with the piston rod, the lower end of the push block is rotatably connected to the upper end of the change-direction nozzle, and the middle part of the change-direction nozzle is rotatably connected to the bottom of the outer shell.

[0008] Preferably, the upper end of the change-direction nozzle is connected to the fire extinguishing agent delivery pipeline through a flexible pipe, and a telescopic sleeve is provided at the connection between the pushing block and the change-direction nozzle, the telescopic sleeve is telescopically connected to the change-direction nozzle, and the telescopic sleeve is rotatably connected to the pushing block.

[0009] Preferably, a spring sleeve is provided at the connection between the pushing block and the piston rod, the outer shell of the spring sleeve is set to be a flexible rubber material, and the piston rod is telescopically connected to the pushing block through the spring sleeve.

[0010] Preferably, the pressure pipe is provided with a plurality of convex rings from top to bottom, and the interior of the convex rings is filled with annular wax blocks.

[0011] Preferably, the volatile liquid is ethanol.

[0012] Preferably, large-range nozzles are provided on both sides of the spray adjustment mechanism, and the large-range nozzles are connected to the fire extinguishing agent delivery pipeline.

[0013] Preferably, the spray adjustment mechanism is fixedly connected to a smoke detector, and the smoke detector and the change-direction nozzle and the wide-range nozzle are all connected to the smoke detector signal.

[0014] Preferably, a buzzer is provided on one side of the smoke detector, and the smoke detector is connected to the buzzer signal.

[0015] The beneficial effect of the present invention is that: by setting up volatile liquid and pressure pipes, when a fire occurs in a local area, the volatile liquid in the corresponding liquid storage ball is heated and boils, so that the air pressure in the corresponding pressure pipe increases, and then the air pressure change is transmitted to the spray regulating mechanism, and the spray regulating mechanism controls the direction of the reversing nozzle through the air pressure change, so that the reversing nozzle points to the direction of the liquid storage ball with a higher temperature, which can more efficiently spray and extinguish the fire source in the early stage of the fire, and the use of volatile liquid in combination with the pressure pipe to locate the fire source, the structure is simpler and more reliable.

[0016] In summary, the present application detects the direction of the fire source by setting up an orientation detection mechanism, so as to locate the direction of the fire source and extinguish the fire more efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a foam fire extinguishing device fixedly connected to a wall in an embodiment of the present application;

[0018] Figure 2 This is a structural schematic diagram of a foam fire extinguishing device in an embodiment of the present application;

[0019] Figure 3 It is a cross-sectional view of the push block of the spray adjustment mechanism in the embodiment of the present application;

[0020] Figure 4 This is a cross-sectional view of the spring sleeve of the spray adjustment mechanism in the embodiment of the present application;

[0021] Figure 5 This is a cross-sectional view of the liquid storage ball in the embodiment of the present application;

[0022] Description of Figure Numbers:

[0023] 1. Fire extinguishing agent delivery pipeline; 2. Spraying adjustment mechanism; 3. Direction detection mechanism; 4. Flexible pipeline; 5. Large-range nozzle; 6. Smoke detector; 7. Buzzer;

[0024] 201, reversible nozzle; 202, housing; 203, piston rod; 204, push block; 205, piston cylinder; 206, telescopic sleeve; 207, spring sleeve;

[0025] 301. liquid storage ball; 302. pressure pipe; 303. volatile liquid; 304. convex ring; 305. annular wax block. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is further elaborated in detail below in conjunction with the drawings and specific embodiments of the specification. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. In the following description, the expression "some embodiments" is related to a subset of all possible embodiments, but it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0027] It should also be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "inside", "outside", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0028] Example 1

[0029] Refer to the attached Figure 1-4 The present application provides a foam fire extinguishing device, comprising a fire extinguishing agent delivery pipeline 1, a spraying adjustment mechanism 2 and an orientation detection mechanism 3, wherein the orientation detection mechanism 3 comprises a liquid storage ball 301, a pressure pipeline 302 and a volatile liquid 303, wherein the pressure pipeline 302 is provided with a plurality of roots, and the bottoms of the plurality of pressure pipelines 302 are fixedly connected with the liquid storage ball 301, and the volatile liquid 303 is arranged inside the liquid storage ball 301, and a change-of-direction nozzle 201 is arranged below the spraying adjustment mechanism 2, and the change-of-direction nozzle 201 is connected with the fire extinguishing agent delivery pipeline 1, and the volatile liquid 303 transmits the air pressure change to the spraying adjustment mechanism 2 through the pressure pipeline 302, so that the change-of-direction nozzle 201 below the spraying adjustment mechanism 2 rotates. The pressure pipe 302 is closely attached to and fixed on the wall of the room where the foam fire extinguishing device is required to be installed. The device is provided with a volatile liquid 303 and a pressure pipe 302. When a fire occurs in a local area, the volatile liquid 303 in the corresponding liquid storage ball 301 is heated and boiled, so that the air pressure in the corresponding pressure pipe 302 increases, and then the air pressure change is transmitted to the spraying regulating mechanism 2. The spraying regulating mechanism 2 controls the direction of the reversing nozzle 201 through the air pressure change, so that the reversing nozzle 201 points to the direction of the liquid storage ball 301 with a higher temperature, and can spray and extinguish the fire source in the early stage of the fire or the most intense burning fire source more efficiently, and the volatile liquid 303 is used in conjunction with the pressure pipe 302 to locate the fire source, and the structure is simpler and more reliable. In summary, the device detects the direction of the fire source by setting the orientation detection mechanism 3, and can locate the direction of the fire source for more efficient fire extinguishing.

[0030] Specifically, the spray adjustment mechanism 2 includes a housing 202, a piston rod 203 and a push block 204. The push block 204 is connected to the pressure pipe 302 via the piston rod 203. The upper end of the pressure pipe 302 is provided with a piston cylinder 205 that cooperates with the piston rod 203. The lower end of the push block 204 is rotatably connected to the upper end of the reversible spray head 201. The middle part of the reversible spray head 201 is rotatably connected to the bottom of the housing 202. In this embodiment, the middle part of the reversible spray head 201 is connected to the bottom of the housing 202 via a ball joint, so that the reversible spray head can rotate freely in different directions. When the liquid storage ball 301 is heated, the internal air pressure of the pressure pipe 302 increases, and the piston rod 203 in the piston cylinder 205 moves due to the change in air pressure. The movement of the piston rod 203 drives the push block 204 to move, and the push block 204 drives the top of the reversing nozzle 201 to move, so that the reversing nozzle 201 rotates with the connection between the bottom of the shell 202 and the reversing nozzle 201 as the fulcrum, and then the lower end of the reversing nozzle 201 is directed toward the heated liquid storage ball 301. When the fire source is located between multiple liquid storage balls 301, the multiple liquid storage balls 301 are heated at the same time, so that the push block 204 is pushed by multiple push rods at the same time, and then the reversing nozzle 201 is directed toward the corresponding multiple liquid storage balls 301. At the same time, the reversing nozzle 201 can change the spraying range by adjusting the atomization degree, so as to avoid the insufficient detection range accuracy of the azimuth detection mechanism 3, which makes it difficult to effectively extinguish the fire source.

[0031] Specifically, the upper end of the reversible nozzle 201 is connected to the fire extinguishing agent delivery pipeline 1 through a flexible pipe 4, and a telescopic sleeve 206 is provided at the connection between the push block 204 and the reversible nozzle 201. The telescopic sleeve 206 is telescopically connected to the reversible nozzle 201, and the telescopic sleeve 206 is rotatably connected to the push block 204. In this embodiment, the telescopic sleeve 206 is connected to the push block 204 through a ball joint, so that the telescopic sleeve 206 can freely rotate in different directions in cooperation with the reversible nozzle 201. By providing the telescopic sleeve 206, the device allows the reversible nozzle 201 to move up and down to a certain extent in the telescopic sleeve 206, so as to avoid the reversible nozzle 201 being stuck and unable to rotate when the push block 204 moves.

[0032] Specifically, a spring sleeve 207 is provided at the connection between the push block 204 and the piston rod 203, and the outer shell 202 of the spring sleeve 207 is set to be a flexible rubber material. The piston rod 203 is telescopically connected to the push block 204 through the spring sleeve 207. By setting the spring sleeve 207, the device can buffer when thrusts are generated in multiple repulsive directions, and the spring sleeve 207 can be bent and deformed to a certain extent to prevent the piston rod 203 and the push block 204 from getting stuck and unable to move. At the same time, by adjusting the spring elastic coefficients in different spring sleeves 207 and the volume of volatile liquid 303 in different liquid storage balls 301, it is possible to adapt to pressure pipes 302 of different lengths, and thus adapt to areas of different lengths, widths and heights.

[0033] Example 2

[0034] See attached Figure 1-5 The difference between this embodiment and embodiment 1 is that the pressure pipe 302 is provided with a plurality of convex rings 304 from top to bottom, and the convex rings 304 are filled with annular wax blocks 305. The annular wax blocks 305 in this embodiment are set to EVA wax with a melting point of 93 degrees Celsius to 100 degrees Celsius. When the fire source is at different heights, there may be a delay in the heating of the liquid storage ball 301. The device sets corresponding annular wax blocks 305 at different heights. When the fire source is at a higher position, the corresponding annular wax blocks 305 melt and drip into the liquid storage ball 301 below, so that the volatile liquid 303 boils and evaporates, ensuring that the pressure change occurs in the pressure pipe 302.

[0035] Specifically, the volatile liquid 303 is set to ethanol. By setting the volatile liquid 303 to ethanol, the heat carried by the annular wax block 305 when dripping can effectively evaporate the volatile liquid 303, thereby changing the air pressure in the pressure pipe 302.

[0036] Specifically, wide-range nozzles 5 are provided on both sides of the spraying adjustment mechanism 2, and the wide-range nozzles 5 are connected to the fire extinguishing agent delivery pipeline 1. By providing the wide-range nozzles 5, the device can also extinguish the fire through wide-range spraying when the fire spreads.

[0037] Specifically, the spray adjustment mechanism 2 is fixedly connected with a smoke detector 6, and the smoke detector 6, the change-direction nozzle 201 and the wide-range nozzle 5 are all connected to the smoke detector 6 by signal. By setting the smoke detector 6, the device ensures that the change-direction nozzle 201 and the wide-range nozzle 5 can be started in time in case of fire.

[0038] Specifically, a buzzer 7 is provided on one side of the smoke detector 6, and the smoke detector 6 is signal-connected to the buzzer 7. By providing the buzzer 7, the device can promptly sound an alarm to remind personnel to escape or handle the fire when a fire occurs.

[0039] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. The protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A foam fire extinguishing device, characterized in that: The invention comprises a fire extinguishing agent delivery pipeline (1), a spraying regulating mechanism (2) and an orientation detection mechanism (3); the orientation detection mechanism (3) comprises a liquid storage ball (301), a pressure pipeline (302) and a volatile liquid (303); a plurality of pressure pipelines (302) are provided, the bottoms of the plurality of pressure pipelines (302) are fixedly connected to the liquid storage ball (301); the volatile liquid (303) is arranged inside the liquid storage ball (301); a change-of-direction nozzle (201) is provided below the spraying regulating mechanism (2); the change-of-direction nozzle (201) is connected to the fire extinguishing agent delivery pipeline (1); the volatile liquid (303) transmits the air pressure change to the spraying regulating mechanism (2) through the pressure pipeline (302), so that the change-of-direction nozzle (201) below the spraying regulating mechanism (2) rotates.

2. A foam fire extinguishing device according to claim 1, characterized in that: The spray adjustment mechanism (2) comprises a housing (202), a piston rod (203) and a push block (204); the four sides of the push block (204) are connected to the pressure pipe (302) through the piston rod (203); the upper end of the pressure pipe (302) is provided with a piston cylinder (205) that cooperates with the piston rod (203); the lower end of the push block (204) is rotatably connected to the upper end of the change-direction spray head (201); and the middle part of the change-direction spray head (201) is rotatably connected to the bottom of the housing (202).

3. A foam fire extinguishing device according to claim 2, characterized in that: The upper end of the change-direction nozzle (201) is connected to the fire extinguishing agent delivery pipeline (1) via a flexible pipeline (4); a telescopic sleeve (206) is provided at the connection between the pushing block (204) and the change-direction nozzle (201); the telescopic sleeve (206) is telescopically connected to the change-direction nozzle (201); and the telescopic sleeve (206) is rotatably connected to the pushing block (204).

4. A foam fire extinguishing device according to claim 3, characterized in that: A spring sleeve (207) is provided at the connection between the pushing block (204) and the piston rod (203); the outer shell (202) of the spring sleeve (207) is made of a flexible rubber material; and the piston rod (203) is telescopically connected to the pushing block (204) via the spring sleeve (207).

5. A foam fire extinguishing device according to claim 1, characterized in that: The pressure pipe (302) is provided with a plurality of convex rings (304) from top to bottom, and the interior of the convex rings (304) is filled with annular wax blocks (305).

6. A foam fire extinguishing device according to claim 5, characterized in that: The volatile liquid (303) is set to be ethanol.

7. A foam fire extinguishing device according to claim 1, characterized in that: Large-range nozzles (5) are arranged on both sides of the spraying adjustment mechanism (2), and the large-range nozzles (5) are connected to the fire extinguishing agent delivery pipeline (1).

8. A foam fire extinguishing device according to claim 7, characterized in that: The spray adjustment mechanism (2) is fixedly connected to a smoke detector (6), and the smoke detector (6) and the change-direction nozzle (201) and the wide-range nozzle (5) are all connected to the smoke detector (6) by signal.

9. A foam fire extinguishing device according to claim 8, characterized in that: A buzzer (7) is provided on one side of the smoke detector (6), and the smoke detector (6) is signal-connected to the buzzer (7).

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