Foam fire extinguishing system for gas station capable of preventing after-combustion
The system addresses foam mobility and re-ignition issues in gas station fire suppression by uniformly mixing and distributing foam and water, ensuring complete fire extinguishment and preventing re-ignition.
Patent Information
- Application Number
- CN202422039183.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-22
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-22
AI Technical Summary
The flame has a chance to reignite after the foam fire extinguishing system of traditional gas stations. Poor foam fluidity leads to limited coverage speed and diffusion range.
The water tank, foam box, pump group control box and foam proportional mixing valve group in the container are adopted. Through the coordinated work of the water pump group, pressure stabilization pump group and foam pump group, uniform mixing and pressure stabilization output of foam and water is achieved. The opening of the nozzle is combined with the image flame detector and solenoid valve to ensure that the foam mixture is uniformly sprayed over the surface of the combustion object.
It realizes uniform mixing of foam and water and regulated pressure output, ensures fire extinguishing effect, prevents the rekindling of burning objects, and improves the safety and efficiency of the fire extinguishing system.
Smart Images
Figure CN223096010U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of fire extinguishing systems, in particular to a foam fire extinguishing system for gas stations that prevents reignition. Background Art
[0002] The equipment of the foam fire extinguishing system for gas stations that prevents reignition is a device for monitoring and controlling the state of the fire extinguishing system, which is used to prevent the foam fire extinguishing system from restarting or remaining in the startup state after fire extinguishing. The emergence of this equipment is mainly to enhance the safety and efficiency of the fire extinguishing system and avoid the reignition of flames.
[0003] Thermal imagers and smoke detectors are used to monitor the fire area after fire extinguishing to ensure that the fire is completely extinguished and avoid re-ignition. Gas detectors are used to detect residual combustible gases in the fire area to prevent the recurrence of fires. The foam fire extinguishing system controller can accurately control the release amount and duration of foam to ensure that foam is released only when needed, avoiding waste of resources and environmental pollution.
[0004] In the traditional foam fire extinguishing system for gas stations, there is a probability that the flame will reignite after fire extinguishing, and additional monitoring and treatment measures are required to ensure the thoroughness of fire extinguishing. The fluidity of the foam is relatively poor, which limits the coverage speed and spread range of the foam during the fire extinguishing process. Therefore, a foam fire extinguishing system for gas stations that prevents reignition is proposed to solve the above problems. Summary of the Utility Model
[0005] To make up for the above deficiencies, the utility model provides a foam fire extinguishing system for gas stations that prevents reignition, aiming to improve the problems that the relatively poor fluidity of the foam in the prior art limits the coverage speed and spread range of the foam during the fire extinguishing process and the flame will reignite after fire extinguishing.
[0006] To achieve the above object, the utility model adopts the following technical scheme: A foam fire extinguishing system for a gas station to prevent re-ignition, including a container and a gas station. Inside the container, there are a water tank, a foam tank, a pump group control box, and a foam proportion mixing valve group. The output end of the water tank is fixedly connected to a first pipeline. The output end of the foam tank is fixedly connected to a second pipeline. The left end of the first pipeline is fixedly connected to a water pump group and a pressure stabilizing pump group. The left end of the second pipeline is fixedly connected to a foam pump group. The output end of the pump group control box is fixedly connected to a plurality of control lines. Among them, the lower ends of a plurality of the control lines are respectively fixedly connected to the signal input ends of the foam pump group, the water pump group, and the pressure stabilizing pump group. The output end of the foam pump group is fixedly connected to a fourth pipeline. The output ends of the water pump group and the pressure stabilizing pump group are fixedly connected to a third pipeline. The left ends of the third pipeline and the fourth pipeline are both fixedly connected to the input end of the foam proportion mixing valve group. The output end of the foam proportion mixing valve group is fixedly connected to a fifth pipeline. The lower end of one of the control lines is fixedly connected to the signal input end of the foam proportion mixing valve group.
[0007] Further, a plurality of uniformly distributed nozzles are fixedly connected to the bottom of the gas station. The fifth pipeline is respectively fixedly connected inside a plurality of the nozzles. A plurality of uniformly distributed image flame detectors are fixedly connected to the bottom of the gas station. Among them, one end of a plurality of the control lines is respectively fixedly connected to the signal input ends of a plurality of the image flame detectors. The right side of the input end of the rightmost nozzle in each row is fixedly connected with a solenoid valve. One end of a plurality of the control lines is respectively fixedly connected to the signal input ends of a plurality of the solenoid valves.
[0008] Further, valves are fixedly connected to the middle parts of the first pipeline and the second pipeline.
[0009] Further, brackets are fixedly connected to the bottoms of the water tank and the foam tank.
[0010] Further, the flow rate of the water pump group and the pressure stabilizing pump group is not less than 3168 L / minute, and the rated working pressure is not less than 1.0 MPa.
[0011] Further, the flow rate of the foam pump group is not less than 95 L / minute, and the rated working pressure is not less than 1.2 MPa.
[0012] Further, the installation distance between a plurality of the nozzles is 5 meters, and the coverage area of a plurality of the nozzles is 12.5 * 5 meters.
[0013] Further, the total flow rate of the protection area formed by a plurality of the nozzles in each row is 3168 L / minute.
[0014] The utility model has the following beneficial effects:
[0015] 1. In the present utility model, the pump group control box controls the start of the foam pump group, the water pump group, and the pressure stabilizing pump group. Among them, the pressure stabilizing pump group can supplement the insufficient water pressure in pipeline three. Water is conveyed from the water tank to the inside of the foam proportioning valve group, and foam is input into the inside of the foam proportioning valve group from the foam tank. Inside the foam proportioning valve group, water and foam are evenly mixed, and then conveyed away from the foam proportioning valve group through pipeline five. Thus, the functions of uniform mixing of a specific proportion of foam and water and stable pressure output can be achieved.
[0016] 2. In the present utility model, the pump group control box outputs signals to multiple control lines to control the opening of multiple solenoid valves. The foam mixed liquid is conveyed into the interior of multiple rows of nozzles and sprayed out evenly from the nozzles. The foam mixed liquid is sprayed on the surface of the burning object, so that the foam mixed liquid covers the surface of the burning object to form a water film. Thus, the functions of extinguishing fire and preventing the re-ignition of the burning object can be achieved. Description of the Drawings
[0017] Figure 1 It is a PID schematic diagram of a foam fire extinguishing system for a gas station with re-ignition prevention proposed by the present utility model.
[0018] Legend Explanation:
[0019] 1. Container; 2. Gas station; 3. Water tank; 4. Foam tank; 5. Pipeline one; 6. Pipeline two; 7. Valve; 8. Foam pump group; 9. Water pump group; 10. Pressure stabilizing pump group; 11. Pump group control box; 12. Control line; 13. Pipeline three; 14. Pipeline four; 15. Foam proportioning valve group; 16. Pipeline five; 17. Solenoid valve; 18. Nozzle; 19. Image flame detector; 20. Bracket. Detailed Embodiment
[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0021] Refer to Figure 1, an embodiment provided by the present utility model: a foam fire extinguishing system for a gas station to prevent re-ignition, comprising a container 1 and a gas station 2. The container 1 can protect the internal structure from external interference, and the gas station 2 can provide support for equipment installation. Inside the container 1, there are a water tank 3, a foam tank 4, a pump control box 11, and a foam proportioning valve group 15. The water tank 3 can hold water, the foam tank 4 can hold foam liquid, the pump control box 11 can control the operation of multiple pump bodies, and the foam proportioning valve group 15 can mix water and foam in different proportions. At the bottom of both the water tank 3 and the foam tank 4, there are fixedly connected brackets 20, and the brackets 20 can support the water tank 3 and the foam tank 4. The output end of the water tank 3 is fixedly connected to a first pipeline 5, and the first pipeline 5 can output water. The output end of the foam tank 4 is fixedly connected to a second pipeline 6, and the second pipeline 6 can output foam. In the middle of both the first pipeline 5 and the second pipeline 6, there are fixedly connected valves 7, and the valves 7 can control the opening and closing of the first pipeline 5 and the second pipeline 6. The left end of the first pipeline 5 is fixedly connected to a water pump group 9 and a pressure stabilizing pump group 10. The water pump group 9 can pump water and deliver it to the foam proportioning valve group 15, and the pressure stabilizing pump group 10 can stabilize the internal water pressure of the third pipeline 13 to prevent the water pressure from being too low. The flow rate of the water pump group 9 and the pressure stabilizing pump group 10 is not less than 3168 L / min, and the rated working pressure is not less than 1.0 MPa. The left end of the second pipeline 6 is fixedly connected to a foam pump group 8, and the foam pump group 8 can output foam. The flow rate of the foam pump group 8 is not less than 95 L / min, and the rated working pressure is not less than 1.2 MPa. The output end of the pump control box 11 is fixedly connected to multiple control lines 12, and the multiple control lines 12 can control the operation of multiple components. Among them, the lower ends of the multiple control lines 12 are respectively fixedly connected to the signal input ends of the foam pump group 8, the water pump group 9, and the pressure stabilizing pump group 10. The output end of the foam pump group 8 is fixedly connected to a fourth pipeline 14, and the fourth pipeline 14 can output foam into the internal of the foam proportioning valve group 15. The output ends of the water pump group 9 and the pressure stabilizing pump group 10 are fixedly connected to a third pipeline 13, and the third pipeline 13 can output water into the internal of the foam proportioning valve group 15. The left ends of the third pipeline 13 and the fourth pipeline 14 are both fixedly connected to the input end of the foam proportioning valve group 15. The output end of the foam proportioning valve group 15 is fixedly connected to a fifth pipeline 16, and the fifth pipeline 16 can output foam liquid mixture. The lower end of one of the control lines 12 is fixedly connected to the signal input end of the foam proportioning valve group 15.
[0022] Refer to Figure 1, at the bottom of the gas station 2, there are multiple evenly distributed nozzles 18 fixedly connected. The multiple nozzles 18 can evenly spray out the foam liquid mixture. The installation distance between the multiple nozzles 18 is 5 meters, and the coverage area of the multiple nozzles 18 is 12.5 * 5 meters. The total flow rate of the protection area formed by the multiple nozzles 18 in each row is 3168 L / minute. The pipeline five 16 is respectively fixedly connected inside the multiple nozzles 18. At the bottom of the gas station 2, there are multiple evenly distributed image flame detectors 19 fixedly connected. The image flame detectors 19 can identify whether there is a flame in the environment. One ends of the multiple control lines 12 are respectively fixedly connected to the signal input ends of the multiple image flame detectors 19. On the right side of the input end of the rightmost nozzle 18 in each row, there is a solenoid valve 17 fixedly connected. The solenoid valve 17 can control the flow of the multiple rows of nozzles 18. One ends of the multiple control lines 12 are respectively fixedly connected to the signal input ends of the multiple solenoid valves 17.
[0023] Working principle: The system operation requires regularly checking whether there is enough water storage in the water tank 3 and whether the foam liquid in the foam tank 4 is sufficient. If not, it needs to be replenished in time. When the multiple image flame detectors 19 identify that there is a flame inside the gas station 2, the image flame detectors 19 will transmit the flame signal to the pump group control box 11 through the control lines 12. The pump group control box 11 will control the foam pump group 8, the water pump group 9, and the pressure stabilizing pump group 10 to start. The pressure stabilizing pump group 10 can supplement the insufficient water pressure of the pipeline three 13. Water is transported from the water tank 3 into the foam proportioning valve group 15. Foam is input into the foam proportioning valve group 15 from the foam tank 4. Inside the foam proportioning valve group 15, water and foam will be evenly mixed, and then transported away from the foam proportioning valve group 15 through the pipeline five 16. The multiple control lines 12 control the multiple solenoid valves 17 to open. The foam liquid mixture will be transported into the multiple rows of nozzles 18 and evenly sprayed out from the nozzles 18. The foam liquid mixture splashes on the surface of the burning object, so that the foam liquid mixture forms a water film on the surface covering the burning object. Under the dual action of the water film and the foam, the fire extinguishing effect can be achieved. When the image flame detector 19 identifies that the flame has disappeared, the pump group control box 11 controls the foam pump group 8 to close and outputs only water from the foam proportioning valve group 15, so that the multiple nozzles 18 spray out water to cool the original burning object to prevent the object from reigniting.
[0024] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A foam fire extinguishing system for a gas station to prevent re-ignition, comprising a container (1) and a gas station (2), characterized in that: Inside the container (1), there is a water tank (3), a foam tank (4), a pump control box (11), and a foam proportion mixing valve group (15). The output end of the water tank (3) is fixedly connected to a first pipeline (5). The output end of the foam tank (4) is fixedly connected to a second pipeline (6). The left end of the first pipeline (5) is fixedly connected to a water pump group (9) and a pressure stabilizing pump group (10). The left end of the second pipeline (6) is fixedly connected to a foam pump group (8). The output end of the pump control box (11) is fixedly connected to a plurality of control lines (12). Among them, the lower ends of a plurality of the control lines (12) are respectively fixedly connected to the signal input ends of the foam pump group (8), the water pump group (9), and the pressure stabilizing pump group (10). The output end of the foam pump group (8) is fixedly connected to a fourth pipeline (14). The output ends of the water pump group (9) and the pressure stabilizing pump group (10) are fixedly connected to a third pipeline (13). The left ends of the third pipeline (13) and the fourth pipeline (14) are both fixedly connected to the input end of the foam proportion mixing valve group (15). The output end of the foam proportion mixing valve group (15) is fixedly connected to a fifth pipeline (16). The lower end of one of the control lines (12) is fixedly connected to the signal input end of the foam proportion mixing valve group (15).
2. The foam fire extinguishing system for a gas station to prevent re-ignition according to claim 1, wherein: At the bottom of the gas station (2), there are a plurality of uniformly distributed nozzles (18) fixedly connected. The fifth pipeline (16) is respectively fixedly connected inside a plurality of the nozzles (18). At the bottom of the gas station (2), there are a plurality of uniformly distributed image flame detectors (19) fixedly connected. Among them, one end of a plurality of the control lines (12) is respectively fixedly connected to the signal input ends of a plurality of the image flame detectors (19). On the right side of the input end of the rightmost nozzle (18) in each row, there is an electromagnetic valve (17) fixedly connected. One end of a plurality of the control lines (12) is respectively fixedly connected to the signal input ends of a plurality of the electromagnetic valves (17).
3. The foam fire extinguishing system for preventing re-ignition in a gas station according to claim 1, wherein: Valves (7) are fixedly connected to the middle parts of the first pipeline (5) and the second pipeline (6).
4. The foam fire extinguishing system for a gas station to prevent re-ignition according to claim 1, wherein: Supports (20) are fixedly connected to the bottoms of the water tank (3) and the foam tank (4).
5. A foam fire extinguishing system for a gas station to prevent re-ignition according to claim 1, characterized in that: The flow rate of the water pump group (9) and the pressure stabilizing pump group (10) is not less than 3168 L / minute, and the rated working pressure is not less than 1.0 MPa.
6. A foam fire extinguishing system for a gas station to prevent re-ignition according to claim 1, characterized in that: The flow rate of the foam pump group (8) is not less than 95 L / minute, and the rated working pressure is not less than 1.2 MPa.
7. A foam fire extinguishing system for a gas station to prevent re-ignition according to claim 2, characterized in that: The installation distance between a plurality of the nozzles (18) is 5 meters, and the coverage area of a plurality of the nozzles (18) is 12.5 * 5 meters.
8. A foam fire extinguishing system for a gas station to prevent re-ignition according to claim 2, characterized in that: The total flow rate of the protected area formed by a plurality of the nozzles (18) in each row is 3168 L / minute.