Compressed nitrogen foam fire extinguishing system

Abstract

The utility model relates to a compressed nitrogen foam fire extinguishing system which comprises a control cabinet, a nitrogen making assembly, a foam generating assembly and an alarm assembly, the nitrogen making assembly is electrically connected to the control cabinet, and the output end of the nitrogen making assembly is connected to a gas conveying pipeline; the foam generating assembly is electrically connected to the control cabinet, the input end of the foam generating assembly is connected to the gas conveying pipeline, and the output end of the foam generating assembly is connected to the nozzle of the protection space; the alarm assembly comprises a nitrogen concentration detector, a first pressure sensor and an audible and visual alarm, the nitrogen concentration detector, the first pressure sensor and the audible and visual alarm are all electrically connected to the control cabinet, and the first pressure sensor is connected to the gas conveying pipeline. Through cooperation of the nitrogen concentration detector, the first pressure sensor and the audible and visual alarm, nitrogen leakage can be detected in real time, a worker can be reminded, the worker can handle the gas leakage position in time, the gas transmission effect is guaranteed, and potential safety hazards are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of fire extinguishing systems, and particularly relates to a compressed nitrogen foam fire extinguishing system. Background Art

[0002] As an inert gas, nitrogen has very stable properties and is relatively friendly to the environment as a fire extinguishing medium. Therefore, it is very suitable for application in fire extinguishing devices.

[0003] Currently, when producing nitrogen, after the nitrogen production equipment finishes nitrogen production, it is transported to a pipeline mixer through a pipeline. Usually, when the nitrogen production equipment leaks, the gas pressure output by the nitrogen production equipment is insufficient, resulting in insufficient air pressure in the pipeline and a gradual increase in the nitrogen content in the air; when the pipeline leaks, the air pressure in the pipeline is insufficient and the nitrogen content in the air gradually increases.

[0004] However, leakage of the nitrogen production equipment or pipeline not only increases the gas transmission time to the pipeline buffer, but also poses a safety hazard in the nitrogen production area. Summary of the Utility Model

[0005] Based on the above description, the utility model provides a compressed nitrogen foam fire extinguishing system, aiming to solve the problems of leakage of existing nitrogen production equipment or pipelines, reduction of the gas transmission efficiency to the pipeline buffer, and safety hazards in the nitrogen production area.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] A compressed nitrogen foam fire extinguishing system, comprising:

[0008] A control cabinet;

[0009] A nitrogen production component, electrically connected to the control cabinet, and the output end of the nitrogen production component is connected to a gas transmission pipeline;

[0010] A foam generation component, electrically connected to the control cabinet, the input end of the foam generation component is connected to the gas transmission pipeline, and the output end of the foam generation component is connected to a nozzle in a protected space;

[0011] An alarm component, including a nitrogen concentration detector, a first pressure sensor, and an audible and visual alarm. The nitrogen concentration detector, the first pressure sensor, and the audible and visual alarm are all electrically connected to the control cabinet, and the first pressure sensor is connected to the gas transmission pipeline.

[0012] Based on the above technical solution, the utility model can also be improved as follows.

[0013] Further, the nitrogen generation assembly includes an air power component, an air drying component, and a nitrogen generation component. The air power component, the air drying component, and the nitrogen generation component are sequentially connected through connecting pipes, and the output end of the nitrogen generation component is connected to the gas transmission pipe.

[0014] Further, the nitrogen generation assembly includes a filtering component. The filtering component is arranged between the air drying component and the nitrogen generation component. The input end of the filtering component is connected to the air drying component through a connecting pipe, and the output end of the filtering component is connected to the nitrogen generation component through a connecting pipe.

[0015] Further, the nitrogen generation assembly is a high-pressure nitrogen cylinder, and the output end of the high-pressure nitrogen cylinder is connected to the gas transmission pipe.

[0016] Further, the foam generation assembly includes a water storage component, a water supply component, a foam box, a foam pump, and a pipe mixer. The water supply component and the foam pump are electrically connected to the control cabinet. The input end of the water supply component is connected to the water storage component through a connecting pipe, the output end of the water supply component is connected to the first end of the pipe mixer through a connecting pipe, the input end of the foam pump is connected to the foam box through a connecting pipe, the output end of the foam pump is connected to the second end of the pipe mixer through a connecting pipe, the output end of the pipe mixer is connected to the protection space through a foam pipe, the third end of the pipe mixer is connected to the gas transmission pipe, and the output end of the pipe mixer is connected to the nozzle through a foam pipe.

[0017] Further, a pressurization assembly is included. The pressurization assembly includes a second pressure sensor and a booster pump. Both the second pressure sensor and the booster pump are connected to the foam pipe. The second pressure sensor and the booster pump are arranged between the pipe mixer and the nozzle, and the second pressure sensor and the booster pump are arranged in sequence along the length direction of the foam pipe.

[0018] Further, a detection and linkage assembly is included. The detection and linkage assembly is arranged inside the protection space. The detection and linkage assembly includes a smoke detector, a temperature detector, and a flame detector. The smoke detector, the temperature detector, and the flame detector are electrically connected to the control cabinet.

[0019] Further, an oxygen concentration detector is included. The oxygen concentration detector is arranged inside the protection space. The oxygen concentration detector is electrically connected to the control cabinet.

[0020] Further, a fresh air ventilation system is included. The fresh air ventilation system is arranged inside the protection space. The fresh air ventilation system is electrically connected to the control cabinet.

[0021] Further, it includes an exhaust valve which is arranged inside the protection space and electrically connected to the control cabinet.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0023] (1) Through the cooperation of the nitrogen concentration detector, the first pressure sensor and the sound and light alarm, this application can detect nitrogen leakage in real time and remind the staff, enabling the staff to promptly handle the air leakage, not only ensuring the gas transmission effect but also preventing potential safety hazards.

[0024] (2) The second pressure sensor of this application measures the pressure of the foam pipeline. When the pressure of the foam pipeline is insufficient, the booster pump is started to increase the pressure, so that the nozzle has sufficient pressure to spray.

[0025] (3) After the compressed nitrogen foam enters the protection space in this application, the exhaust valve is started to squeeze out the air in the protection space. Avoiding the presence of oxygen in the protection space and preventing oxygen from participating in combustion, thus being able to extinguish the fire as soon as possible. Description of the Drawings

[0026] Figure 1 It is the general assembly drawing of a compressed nitrogen foam fire extinguishing system provided in the embodiment of the present utility model;

[0027] Figure 2 It is the troubleshooting schematic diagram of a compressed nitrogen foam fire extinguishing system provided in the embodiment of the present utility model.

[0028] Description of the Reference Numerals:

[0029] 1. Control cabinet;

[0030] 2. Nitrogen generation component; 21. Air power component; 22. Air drying component; 23. Nitrogen generation component; 24. Filter component;

[0031] 3. Foam generation component; 31. Water storage component; 32. Water supply component; 33. Foam box; 34. Foam pump; 35. Pipeline mixer;

[0032] 4. Alarm component; 41. Nitrogen concentration detector; 42. First pressure sensor; 43. Sound and light alarm;

[0033] 5. Booster component; 51. Second pressure sensor; 52. Booster pump;

[0034] 6. Detection linkage component; 61. Smoke detector; 62. Temperature detector; 63. Flame detector;

[0035] 7. Oxygen concentration detector;

[0036] 8. Fresh air ventilation system;

[0037] 9. Exhaust valve. Detailed implementation manners

[0038] To facilitate the understanding of this application, the following will describe this application more comprehensively with reference to relevant drawings. Embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of this application more thorough and comprehensive.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this application in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0040] It can be understood that spatial relationship terms such as "under", "below", "lower", "beneath", "above", "upper", etc. can be used herein to describe the relationship of one element or feature shown in the figure with other elements or features. It should be understood that in addition to the orientation shown in the figure, spatial relationship terms also include different orientations of the device during use and operation. For example, if the device in the drawing is flipped, an element or feature described as "under other elements" or "beneath them" or "under them" will be oriented "above" other elements or features. Therefore, the exemplary terms "under" and "below" can include both the upper and lower orientations. In addition, the device may also include other orientations (such as rotating 90 degrees or other orientations), and the spatial description terms used herein are accordingly interpreted.

[0041] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms "include" or "have" or the like specify the presence of the stated features, wholes, steps, operations, components, parts or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0042] Refer to the attached Figures 1-2As shown in the figure, the present utility model provides a technical solution: a compressed nitrogen foam fire extinguishing system, which includes a control cabinet 1, a nitrogen generation component 2, a foam generation component 3, and an alarm component 4. The nitrogen generation component 2 is electrically connected to the control cabinet 1, and the output end of the nitrogen generation component 2 is connected to the gas transmission pipeline. The foam generation component 3 is electrically connected to the control cabinet 1. The input end of the foam generation component 3 is connected to the gas transmission pipeline, and the output end of the foam generation component 3 is connected to the sprinkler head of the protected space. The alarm component 4 includes a nitrogen concentration detector 41, a first pressure sensor 42, and an audible and visual alarm 43. The nitrogen concentration detector 41, the first pressure sensor 42, and the audible and visual alarm 43 are all electrically connected to the control cabinet 1, and the first pressure sensor 42 is connected to the gas transmission pipeline.

[0043] Exemplarily, both the nitrogen concentration detector 41 and the audible and visual alarm 43 can be installed on the nitrogen generation component 2. The model of the nitrogen concentration detector 41 can be SKS-BA-N2, etc. The model of the first pressure sensor 42 can be QBE2002-P16, etc. The model of the audible and visual alarm 43 can be JTG5-JN991-2C.

[0044] It should be noted that the control cabinet 1 is a cabinet integrated with a fire extinguishing controller, which can perform corresponding control and processing on the signals of various detectors, sensors, and alarms. It is a commonly used fire control system in commercial buildings or residential buildings at present.

[0045] According to this embodiment, the nitrogen concentration detector 41 measures the actual nitrogen concentration around the nitrogen generation component 2, and the first pressure sensor 42 is used to measure the actual pressure value of the gas transmission pipeline. When the actual nitrogen concentration is higher than the preset nitrogen concentration threshold and the actual pressure value is lower than the preset pressure threshold, the audible and visual alarm 43 gives an audible and visual alarm prompt to remind the staff to promptly handle the air leakage, which not only ensures the gas transmission effect but also prevents potential safety hazards.

[0046] Refer to the attached Figures 1-2 As shown in the figure, in some embodiments, the nitrogen generation component 2 includes an air power component 21, an air drying component 22, and a nitrogen generation component 23. The air power component 21, the air drying component 22, and the nitrogen generation component 23 are sequentially connected through a connecting pipeline, and the output end of the nitrogen generation component 23 is connected to the gas transmission pipeline.

[0047] Exemplarily, the air power component 21 can be an air compressor or a fan, etc. The air drying component 22 can be a refrigerated dryer or a pressure swing adsorber, etc. The nitrogen generation component 23 can be a molecular sieve, a refrigerator, a membrane module, or a nitrogen generator, etc.

[0048] According to this embodiment, during nitrogen generation, the air power component 21 inhales air from the outside and transports the air to the air drying component 22. After the air drying component 22 dries the air, the nitrogen generation component 23 filters other gases from the air to obtain nitrogen.

[0049] Refer to the attached Figures 1-2 Figures 1-2 As shown, in some embodiments, the nitrogen generation assembly 2 includes a filter element 24 disposed between the air drying element 22 and the nitrogen generation element 23. The input end of the filter element 24 is connected to the air drying element 22 through a connecting pipe, and the output end of the filter element 24 is connected to the nitrogen generation element 23 through a connecting pipe.

[0050]

[0050] In this embodiment, the filter element 24 filters oil and moisture in the air, thereby minimizing impurities in the foam as much as possible.

[0051] Refer to the attached Figure 1 Figure 1 As shown, in some other embodiments, the nitrogen generation assembly 2 is a high-pressure nitrogen cylinder, and the output end of the high-pressure nitrogen cylinder is connected to the gas transmission pipeline.

[0052]

[0052] In this embodiment, nitrogen can be obtained at a faster speed in this way, thereby increasing the speed of producing the foam.

[0053] Refer to the attached Figures 1-2 Figures 1-2 As shown, in some embodiments, the foam generation assembly 3 includes a water storage member 31, a water supply member 32, a foam box 33, a foam pump 34, and a pipe mixer 35. The water supply member 32 and the foam pump 34 are electrically connected to the control cabinet 1. The input end of the water supply member 32 is connected to the water storage member 31 through a connecting pipe, the output end of the water supply member 32 is connected to the first end of the pipe mixer 35 through a connecting pipe, the input end of the foam pump 34 is connected to the foam box 33 through a connecting pipe, the output end of the foam pump 34 is connected to the second end of the pipe mixer 35 through a connecting pipe, the output end of the pipe mixer 35 is connected to the protected space through a foam pipe, the third end of the pipe mixer 35 is connected to the gas transmission pipeline, and the output end of the pipe mixer 35 is connected to a spray head through a foam pipe.

[0054]

[0054] Exemplarily, the water storage member 31 can be a water tank or a pool, etc. The water supply member 32 can be a centrifugal pump or a fire hydrant, etc. The foam pump 34 can be a centrifugal pump or a Venturi vacuum pump.

[0055]

[0055] In this embodiment, while nitrogen enters the pipe mixer 35, the water storage member 31 inputs the water in the water storage member 31 into the pipe mixer 35, and the foam pump 34 inputs the foam liquid in the foam box 33 into the pipe mixer 35. Subsequently, the pipe mixer 35 fully mixes the nitrogen, water, and foam liquid to obtain compressed nitrogen foam.

[0056] Refer to the attached Figures 1-2As shown, in some embodiments, it includes a boosting assembly 5. The boosting assembly 5 includes a second pressure sensor 51 and a booster pump 52. Both the second pressure sensor 51 and the booster pump 52 are connected to the foam pipeline. The second pressure sensor 51 and the booster pump 52 are arranged between the in-line mixer 35 and the nozzle, and the second pressure sensor 51 and the booster pump 52 are arranged in sequence along the length direction of the foam pipeline.

[0057] Exemplarily, the model of the second pressure sensor 51 can be QBE2002-P16, etc.

[0058] According to this embodiment, when delivering compressed nitrogen foam, the second pressure sensor 51 is used to measure the actual pressure value of the foam pipeline. When the actual pressure value is lower than the preset pressure threshold, the booster pump 52 is started for boosting, so that the nozzle has sufficient pressure for spraying.

[0059] Refer to the appendix Figures 1-2 As shown, in some embodiments, it includes a detection linkage assembly 6. The detection linkage assembly 6 is arranged within the protected space. The detection linkage assembly 6 includes a smoke detector 61, a temperature detector 62 and a flame detector 63. The smoke detector 61, the temperature detector 62 and the flame detector 63 are electrically connected to the control cabinet 1.

[0060] Exemplarily, the model of the smoke detector 61 can be AT92 / SS-168, etc. The model of the temperature detector 62 can be JTW-ZDM-LD3300EN, etc. The model of the flame detector 63 can be ASD-HY1000 / UVIR3, etc.

[0061] According to this embodiment, the smoke concentration in the protected space is measured by the smoke detector 61, the temperature of the protected space is measured by the temperature detector 62, and whether there is a flame in the protected space is measured by the flame detector 63, so as to ensure timely detection of whether a fire occurs in the protected space.

[0062] Refer to the appendix Figures 1-2 As shown, in some embodiments, it includes an oxygen concentration detector 7. The oxygen concentration detector 7 is arranged within the protected space. The oxygen concentration detector 7 is electrically connected to the control cabinet 1.

[0063] Exemplarily, the model of the oxygen concentration detector 7 can be FIX800-O2, etc.

[0064] According to this embodiment, when the detection linkage assembly 6 detects an abnormality, the oxygen concentration detector 7 quickly measures the oxygen concentration in the protected space to accurately determine whether a fire occurs in the protected space.

[0065] Refer to the appendix Figure 1 As shown, in some embodiments, it includes a fresh air ventilation system 8. The fresh air ventilation system 8 is arranged within the protected space. The fresh air ventilation system 8 is electrically connected to the control cabinet 1.

[0066] In this embodiment, during normal conditions or after the fire is extinguished, the fresh air ventilation system 8 ventilates the protected space to ensure the air quality of the protected space.

[0067] Refer to the attached Figures 1-2 As shown, in some embodiments, an exhaust valve 9 is included. The exhaust valve 9 is disposed within the protected space and is electrically connected to the control cabinet 1.

[0068] In this embodiment, after the compressed nitrogen foam enters the protected space, the exhaust valve 9 is activated to squeeze out the air in the protected space. This avoids the presence of oxygen in the protected space and prevents oxygen from participating in combustion, thus enabling the fire to be extinguished as soon as possible.

[0069] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A compressed nitrogen foam fire extinguishing system, characterized in that, Comprising: Control cabinet (1); Nitrogen generation component (2), electrically connected to the control cabinet (1), and the output end of the nitrogen generation component (2) is connected to the gas transmission pipeline; Foam generation component (3), electrically connected to the control cabinet (1), the input end of the foam generation component (3) is connected to the gas transmission pipeline, and the output end of the foam generation component (3) is connected to the sprinkler head of the protected space; Alarm component (4), including a nitrogen concentration detector (41), a first pressure sensor (42), and an audible and visual alarm (43), the nitrogen concentration detector (41), the first pressure sensor (42), and the audible and visual alarm (43) are all electrically connected to the control cabinet (1), and the first pressure sensor (42) is connected to the gas transmission pipeline.

2. The compressed nitrogen foam fire extinguishing system according to claim 1, characterized in that The nitrogen generation component (2) includes an air power component (21), an air drying component (22), and a nitrogen generation component (23), the air power component (21), the air drying component (22), and the nitrogen generation component (23) are sequentially connected through a connecting pipeline, and the output end of the nitrogen generation component (23) is connected to the gas transmission pipeline.

3. The compressed nitrogen foam fire extinguishing system according to claim 2, wherein The nitrogen generation component (2) includes a filter component (24), the filter component (24) is arranged between the air drying component (22) and the nitrogen generation component (23), the input end of the filter component (24) is connected to the air drying component (22) through a connecting pipeline, and the output end of the filter component (24) is connected to the nitrogen generation component (23) through a connecting pipeline.

4. A compressed nitrogen foam fire extinguishing system according to claim 1, characterized in that The nitrogen generation component (2) is a high-pressure nitrogen cylinder, and the output end of the high-pressure nitrogen cylinder is connected to the gas transmission pipeline.

5. The compressed nitrogen foam fire extinguishing system according to claim 3, wherein The foam generation component (3) includes a water storage component (31), a water supply component (32), a foam box (33), a foam pump (34), and a pipeline mixer (35), the water supply component (32) and the foam pump (34) are electrically connected to the control cabinet (1), the input end of the water supply component (32) is connected to the water storage component (31) through a connecting pipeline, the output end of the water supply component (32) is connected to the first end of the pipeline mixer (35) through a connecting pipeline, the input end of the foam pump (34) is connected to the foam box (33) through a connecting pipeline, the output end of the foam pump (34) is connected to the second end of the pipeline mixer (35) through a connecting pipeline, the output end of the pipeline mixer (35) is connected to the protected space through a foam pipeline, the third end of the pipeline mixer (35) is connected to the gas transmission pipeline, and the output end of the pipeline mixer (35) is connected to the sprinkler head through a foam pipeline.

6. The compressed nitrogen foam fire extinguishing system according to claim 5, wherein, Comprising a pressurization component (5), the pressurization component (5) includes a second pressure sensor (51) and a booster pump (52), the second pressure sensor (51) and the booster pump (52) are both connected to the foam pipeline, the second pressure sensor (51) and the booster pump (52) are arranged between the pipeline mixer (35) and the sprinkler head, and the second pressure sensor (51) and the booster pump (52) are arranged in sequence along the length direction of the foam pipeline.

7. A compressed nitrogen foam fire extinguishing system according to any one of claims 1 to 6, characterized in that, It includes a detection linkage component (6), the detection linkage component (6) is arranged within the protected space, the detection linkage component (6) includes a smoke detector (61), a temperature detector (62) and a flame detector (63), and the smoke detector (61), the temperature detector (62) and the flame detector (63) are electrically connected to the control cabinet (1).

8. A compressed nitrogen foam fire extinguishing system according to claim 7, characterized in that, It includes an oxygen concentration detector (7), the oxygen concentration detector (7) is arranged within the protected space, and the oxygen concentration detector (7) is electrically connected to the control cabinet (1).

9. A compressed nitrogen foam fire extinguishing system according to any one of claims 1 to 6, characterized in that, It includes a fresh air ventilation system (8), the fresh air ventilation system (8) is arranged within the protected space, and the fresh air ventilation system (8) is electrically connected to the control cabinet (1).

10. A compressed nitrogen foam fire extinguishing system according to claim 9, characterized in that, It includes an exhaust valve (9), the exhaust valve (9) is arranged within the protected space, and the exhaust valve (9) is electrically connected to the control cabinet (1).

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