Fire extinguishing test equipment for foam extinguishing agent

Abstract

The utility model provides fire extinguishing test equipment for a foam extinguishing agent, which belongs to the technical field of fire fighting and comprises a foam storage tank, a test bed, a conveying mechanism, a first data collector and a second data collector. The test bed is used for placing test articles; a pipeline connected with the foam storage tank and a spray gun connected with the pipeline are arranged on the conveying mechanism, and the spray gun is arranged towards the test bed; the first data collector is arranged on the test bed and is used for collecting the heat radiation intensity of the test article; the second data collector is arranged at the tail end of the pipeline and used for collecting pressure and flow of the tail end of the pipeline. According to the fire extinguishing test equipment for the foam extinguishing agent provided by the utility model, in the process that the spray gun sprays the foam extinguishing agent towards the test bed, the first data collector and the second data collector are used for collecting the heat radiation intensity of a test article and the pressure and the flow of the foam extinguishing agent in the pipeline in real time in the test process; therefore, the fire extinguishing effect of the foam fire extinguishing agent is evaluated.

Description

Technical Field

[0001] This utility model belongs to the field of fire protection technology, specifically relating to a foam extinguishing agent fire extinguishing test device. Background Technology

[0002] Foam extinguishing agents are widely used in the fire protection field due to their high fire extinguishing performance and wide applicability. However, the fire extinguishing effect may vary between different formulations and batches of foam extinguishing agents. To ensure the quality and performance of foam extinguishing agents, rigorous testing is required. The fire extinguishing test process specified in the existing technology GB15308 "Foam Extinguishing Agents" is complex, consumes a large amount of fuel, has high site requirements, and is costly. It is not suitable for small laboratories and cannot meet the needs of internal product quality control in enterprises. Utility Model Content

[0003] This utility model provides a foam extinguishing agent fire extinguishing test device to solve the technical problems of complex and cumbersome fire extinguishing test process in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a foam extinguishing agent fire extinguishing test device, comprising:

[0005] A foam storage tank is used to store foam extinguishing agent; a high-pressure gas cylinder is connected to the foam storage tank to provide high-pressure gas to the foam storage tank.

[0006] A test bench is used to place test samples;

[0007] A conveying mechanism is connected to the foam storage tank for conveying foam extinguishing agent; the conveying mechanism is provided with a pipeline connected to the bottom of the foam storage tank and a spray gun connected to the end of the pipeline, and the nozzle of the spray gun is oriented towards the test bench;

[0008] A first data collector is installed on the test bench and is used to collect the thermal radiation intensity on the test bench;

[0009] A second data collector is located at the end of the pipeline and is used to collect the pressure and flow rate at the end of the pipeline.

[0010] In one possible implementation, the foam storage tank is provided with a partition that separates the interior of the foam storage tank into a driving chamber and a stirring chamber arranged vertically. The foam storage tank is provided with a stirring assembly located in the stirring chamber for stirring high-pressure gas and foam extinguishing agent and a driver located in the driving chamber. The driver is drivenly connected to the stirring assembly and is used to drive the stirring assembly to rotate.

[0011] In one possible implementation, the stirring assembly includes a stirring shaft, multiple connecting rods, and multiple stirring rods; the stirring shaft is vertically arranged and is drivenly connected to the driver; the multiple connecting rods are disposed on the stirring shaft and arranged circumferentially along the stirring shaft, one end of the connecting rod is rotatably connected to the stirring shaft, and the other end is connected to the stirring rod; the stirring rod is an arc-shaped structure with the same curvature as the bottom of the foam storage tank.

[0012] In one possible implementation, a slider is fitted onto the connecting rod and slidably connected to the connecting rod; the slider is provided with a plurality of stirring blades arranged circumferentially along the slider; an elastic element is also fitted onto the connecting rod, and the two ends of the elastic element are respectively connected to the slider and the stirring rod.

[0013] In one possible implementation, the stirring shaft is further provided with a scraper located above the connecting rod, the scraper being inclined and one side of the scraper contacting the inner wall of the foam storage tank.

[0014] In one possible implementation, the test bench includes a support and a fire extinguishing oil tray; the support is located on the ground; the fire extinguishing oil tray is located on the support and is used to hold the test sample.

[0015] In one possible implementation, the first data collector is a heat flow sensor located at the edge of the fire extinguishing oil pan.

[0016] In one possible implementation, the second data collector includes a pressure gauge and a flow meter, both of which are located at the end of the pipeline.

[0017] In one possible implementation, the foam storage tank is equipped with a solenoid valve for controlling the delivery of the foam extinguishing agent.

[0018] In one possible implementation, a foam extinguishing agent fire extinguishing test device is further provided with a control system, which is electrically connected to the solenoid valve, the first data collector, and the second data collector.

[0019] The beneficial effects of the foam extinguishing agent fire extinguishing test equipment provided by this utility model are as follows: Compared with the prior art, the foam extinguishing agent fire extinguishing test equipment of this utility model, when in use, has a pipeline connected to a foam storage tank on the conveying mechanism, which in turn is connected to a spray gun at the end of the pipeline, and the nozzle of the spray gun is set towards the test platform. Therefore, after the test sample is placed on the test platform and ignited, the high-pressure gas cylinder provides high-pressure gas to the foam storage tank, pressurizing the foam extinguishing agent and causing it to be sprayed out from the nozzle of the spray gun through the pipeline, thereby extinguishing the fire on the test sample; since the first data collector is located on the test platform and the second data collector is located on the pipeline... Therefore, during the process of extinguishing a fire with foam extinguishing agent on a test specimen, the first and second data collectors collect data in real time on the heat radiation intensity of the test specimen and the pressure and flow rate at the end of the pipeline. Based on the data collection results, the extinguishing effect of the foam extinguishing agent is evaluated. In this way, as the spray gun sprays foam extinguishing agent toward the test specimen, the first and second data collectors collect data in real time on the heat radiation intensity of the test specimen and the pressure and flow rate of the foam extinguishing agent in the pipeline, thereby evaluating the extinguishing effect of the foam extinguishing agent. At the same time, the extinguishing effects of different foam extinguishing agents in the same or different fire scenarios can also be compared. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the test equipment provided in the embodiment of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the foam storage tank provided in an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the stirring assembly provided in an embodiment of the present invention.

[0024] The following are the labeling elements in the figure:

[0025] 1. Foam storage tank; 11. Baffle; 12. Drive chamber; 13. Stirring chamber; 2. Test bench; 21. Support; 22. Fire extinguishing oil pan; 3. Conveying mechanism; 31. Pipeline; 32. Spray gun; 33. Solenoid valve; 4. First data collector; 5. Second data collector; 51. Pressure gauge; 52. Flow meter; 6. Stirring assembly; 61. Stirring shaft; 62. Connecting rod; 63. Stirring rod; 64. Slider; 65. Stirring blade; 66. Elastic element; 67. Scraper; 7. Driver. Detailed Implementation

[0026] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0028] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] Please see Figures 1 to 3The present invention provides a foam extinguishing agent fire extinguishing test device. The device includes a foam storage tank 1, a test bench 2, a conveying mechanism 3, a first data collector 4, and a second data collector 5. The foam storage tank 1 stores the foam extinguishing agent. A high-pressure gas cylinder is connected to the foam storage tank 1 to provide high-pressure gas. The test bench 2 is used to place the test sample. The conveying mechanism 3 is connected to the foam storage tank 1 and is used to convey the foam extinguishing agent. The conveying mechanism 3 is equipped with a pipe 31 connected to the bottom of the foam storage tank 1 and a spray gun 32 connected to the end of the pipe 31, with the nozzle of the spray gun 32 facing the test bench 2. The first data collector 4 is located on the test bench 2 and is used to collect the thermal radiation intensity on the test bench 2. The second data collector 5 is located at the end of the pipe 31 and is used to collect the pressure and flow rate at the end of the pipe 31.

[0031] Compared with the prior art, the foam extinguishing agent fire extinguishing test equipment provided in this embodiment, when in use, has a pipeline 31 connected to the foam storage tank 1 and a spray gun 32 connected to the end of the pipeline 31 on the conveying mechanism 3. The spray nozzle of the spray gun 32 is positioned facing the test platform 2. Therefore, after placing the test sample on the test platform 2 and igniting it, the high-pressure gas cylinder provides high-pressure gas to the foam storage tank 1, pressurizing the foam extinguishing agent and causing it to be sprayed out through the pipeline 31 from the spray nozzle of the spray gun 32, thereby extinguishing the fire. Since the first data collector 4 is located on the test platform 2 and the second data collector 5 is located on the pipeline 31... Therefore, during the process of extinguishing the fire with foam extinguishing agent on the test platform 2, the first data collector 4 and the second data collector 5 collect the heat radiation intensity of the test platform 2 and the pressure and flow rate at the end of the pipeline 31 in real time. Based on the data collection results, the fire extinguishing effect of the foam extinguishing agent is evaluated. In this way, during the process of spraying foam extinguishing agent towards the test platform 2, the first data collector 4 and the second data collector 5 collect the heat radiation intensity of the test platform and the pressure and flow rate of the foam extinguishing agent in the pipeline 31 in real time, thereby evaluating the fire extinguishing effect of the foam extinguishing agent. At the same time, the fire extinguishing effects of different foam extinguishing agents in the same or different fire scenarios can also be compared.

[0032] Please see Figure 2As a specific embodiment of the foam extinguishing agent fire extinguishing test equipment provided by this utility model, the foam storage tank 1 is provided with a partition 11, which separates the interior of the foam storage tank 1 into a driving chamber 12 and a stirring chamber 13 arranged vertically. The foam storage tank 1 is provided with a stirring assembly 6 located in the stirring chamber 13 for stirring high-pressure gas and foam extinguishing agent and a driver 7 located in the driving chamber 12. The driver 7 is driven to the stirring assembly 6 for driving the stirring assembly 6 to rotate. The partition 11 separates the interior of the foam storage tank 1 to protect the driver 7 located in the driving chamber 12. The driver 7 drives the stirring assembly 6 to rotate, and the stirring assembly 6 stirs the foam extinguishing agent to prevent the foam extinguishing agent from settling. At the same time, the foam extinguishing agent is mixed with the high-pressure gas to make the foam extinguishing agent fully foamed for fire extinguishing.

[0033] Please see Figure 2 and Figure 3 As a specific embodiment of the foam extinguishing agent fire extinguishing test equipment provided by this utility model, the stirring assembly 6 includes a stirring shaft 61, multiple connecting rods 62, and multiple stirring rods 63; the stirring shaft 61 is vertically arranged and is connected to the driver 7; the multiple connecting rods 62 are arranged on the stirring shaft 61 and are arranged circumferentially along the stirring shaft 61, one end of the connecting rod 62 is rotatably connected to the stirring shaft 61, and the other end is connected to the stirring rod 63; the stirring rod 63 has an arc-shaped structure with the same curvature as the bottom of the foam storage tank 1; the driver 7 drives the stirring shaft 61 to rotate, and the stirring shaft 61 drives the connecting rods 62. The rotation of the connecting rod 62 causes the stirring rod 63 to rotate, thereby stirring the foam extinguishing agent. Since the connecting rod 62 is rotatably connected to the stirring shaft 61, the angle between the connecting rod 62 and the stirring shaft 61 can be controlled by centrifugal force through continuous control of the speed of the driver 7, thereby changing the stirring range of the stirring rod 63 and thus better stirring the foam extinguishing agent. The stirring rod 63 is set to an arc shape with the same curvature as the bottom of the foam storage tank 1 to improve the stirring efficiency of the stirring assembly 6. The driver 7 is a motor, and the output shaft of the motor is connected to the stirring shaft 61 for transmission.

[0034] Please see Figure 2 and Figure 3As a specific embodiment of the foam extinguishing agent fire extinguishing test equipment provided by this utility model, a slider 64 is sleeved on the connecting rod 62 and slidably connected to the connecting rod 62; the slider 64 is provided with a plurality of stirring blades 65 arranged circumferentially along the slider 64; an elastic element 66 is also sleeved on the connecting rod 62, and the two ends of the elastic element 66 are respectively connected to the slider 64 and the stirring rod 63; when the stirring shaft 61 drives the connecting rod 62 to rotate, the slider 64 slidably connected to the connecting rod 62 will move along the connecting rod 62 toward the direction closer to the stirring rod 63 by means of centrifugal force, and at the same time compress the elastic element 66. The compressed elastic element 66 will reset by means of elastic force, thereby pushing the slider 64 to reset; because By utilizing centrifugal force and the elastic force of the elastic element 66, the slider 64 can slide back and forth on the connecting rod 62. Since the slider 64 is provided with multiple stirring blades 65 in the circumference, when the connecting rod 62 rotates with the stirring shaft 61, the stirring blades 65 are driven to rotate by the reaction force given by the foam extinguishing agent, so that the slider 64 moves back and forth along the connecting rod 62 and rotates in the circumference of the connecting rod 62 at the same time. Therefore, while the stirring blades 65 are stirring the foam extinguishing agent, they not only increase the stirring range of the stirring blades 65, but also make the stirring direction of the stirring rod 63 opposite to that of the stirring blades 65, so as to make the mixing of the foam extinguishing agent and the high-pressure gas more uniform. The elastic element 66 is a spring.

[0035] Please see Figure 2 and Figure 3 As a specific embodiment of the foam extinguishing agent fire extinguishing test equipment provided by this utility model, the stirring shaft 61 is also provided with a scraper 67 located above the connecting rod 62. The scraper 67 is inclined and one side of the scraper 67 is in contact with the inner wall of the foam storage tank 1. The stirring shaft 61 rotates and drives the scraper 67 to rotate, thereby scraping away the foam extinguishing agent splashed on the inner wall of the foam storage tank 1 with the help of the inclined scraper 67, so that it falls to the bottom of the foam storage tank 1.

[0036] Please see Figure 1 As a specific embodiment of the foam extinguishing agent fire extinguishing test equipment provided by this utility model, the test bench 2 includes a support 21 and an extinguishing oil pan 22; the support 21 is set on the ground; the extinguishing oil pan 22 is set on the support 21 and is used to hold the test sample; the support 21 is also equipped with an igniter for igniting the test sample; the support 21 supports the extinguishing oil pan 22; after the test sample is placed in the extinguishing oil pan 22, the test sample is ignited by the igniter, and then the fire extinguishing test is carried out; during the fire extinguishing test, since the nozzle of the spray gun 32 is set towards the test bench 2, the foam extinguishing agent is sprayed by the spray gun 32, and the foam extinguishing agent is sprayed into the extinguishing oil pan 22 through the spray gun 32, thereby extinguishing the burning test sample.

[0037] Please see Figure 1As a specific embodiment of the foam extinguishing agent fire extinguishing test equipment provided by this utility model, the first data collector 4 is a heat flow sensor, which is located at the edge of the fire extinguishing oil pan 22. The heat flow sensor is located at the edge of the fire extinguishing oil pan 22 so that it can more conveniently collect data on the heat radiation intensity. Since the heat flow sensor has high-precision measurement capability, it can meet the needs of precision measurement, and has a fast response speed, it can quickly react to temperature changes, and it can perform measurements in a wide temperature range, making it suitable for various application scenarios. Therefore, the first data collector 4 is set as a heat flow sensor.

[0038] Please see Figure 1 As a specific embodiment of the foam extinguishing agent fire extinguishing test equipment provided by this utility model, the second data collector 5 includes a pressure gauge 51 and a flow meter 52, both of which are located at the end of the pipeline 31. The pressure gauge 51 is located at the end of the pipeline 31 to facilitate the measurement of the pressure of the foam extinguishing agent in the pipeline 31; the flow meter 52 is located at the end of the pipeline 31 to facilitate the measurement of the flow rate of the foam extinguishing agent in the pipeline 31.

[0039] Please see Figure 1 As a specific embodiment of the foam extinguishing agent fire extinguishing test equipment provided by this utility model, a solenoid valve 33 is provided on the pipeline 31 to control the delivery of the foam extinguishing agent; the solenoid valve 33 on the pipeline 31 is used to control the delivery of the foam extinguishing agent; the high-pressure gas cylinder is connected to the foam storage tank 1 through the pipeline to pressurize the premixed foam extinguishing agent so that the foam extinguishing agent can enter the spray gun 32 through the pipeline 31.

[0040] Not shown in the figure, as a specific embodiment of the foam extinguishing agent fire extinguishing test equipment provided by this utility model, the foam extinguishing agent fire extinguishing test equipment is further equipped with a control system. The control system is electrically connected to the solenoid valve 33, the first data collector 4, and the second data collector 5. The control system controls the opening or closing of the solenoid valve 33, thereby controlling the delivery of the foam extinguishing agent. The control system controls the first data collector 4 and the second data collector 5, thereby controlling the first data collector 4 and the second data collector 5, and recording the data collected by the first data collector 4 and the second data collector 5, so as to evaluate the effect of the foam extinguishing agent.

[0041] Not shown in the figure, as a specific embodiment of the foam extinguishing agent fire extinguishing test equipment provided by this utility model, the control system is equipped with a display screen to display the collected data; the data collected by the first data collector 4 and the second data collector 5 can be clearly seen with the help of the display screen; at the same time, the opening or closing of the solenoid valve 33 can be easily controlled with the help of the display screen.

[0042] Not shown in the figure, as a specific embodiment of the foam extinguishing agent fire extinguishing test equipment provided by this utility model, the foam extinguishing agent fire extinguishing test equipment is also provided with a protective mechanism. The protective mechanism is electrically connected to the first data collector 4 and is used to protect the test equipment. When the heat radiation intensity data detected by the first data collector 4 is abnormal, the protective mechanism can quickly extinguish the burning test sample, thereby protecting the test equipment.

[0043] Not shown in the figure, as a specific embodiment of the foam extinguishing agent fire extinguishing test equipment provided by this utility model, the protective mechanism includes a water tank, multiple nozzles, and multiple connecting pipes. The water tank is used to store water, and the multiple nozzles are arranged around the test platform 2. The two ends of the connecting pipes are connected to the water tank and the nozzles, respectively. When the foam extinguishing agent cannot extinguish the burning test sample, the water in the water tank enters the nozzle through the connecting pipe, and the nozzle sprays water onto the test platform 2, thereby protecting the test equipment. The water tank is connected to a water pump, which is used to pump the water in the water tank into the nozzle.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A foam extinguishing agent fire extinguishing test device, characterized in that, include: A foam storage tank is used to store foam extinguishing agent; a high-pressure gas cylinder is connected to the foam storage tank to provide high-pressure gas to the foam storage tank. A test bench is used to place test samples; A conveying mechanism is connected to the foam storage tank for conveying foam extinguishing agent; the conveying mechanism is provided with a pipeline connected to the bottom of the foam storage tank and a spray gun connected to the end of the pipeline, and the nozzle of the spray gun is oriented towards the test bench; A first data collector is installed on the test bench and is used to collect the thermal radiation intensity on the test bench; A second data collector is located at the end of the pipeline and is used to collect the pressure and flow rate at the end of the pipeline.

2. The foam extinguishing agent fire extinguishing test equipment as described in claim 1, characterized in that, The foam storage tank is equipped with a partition, which separates the interior of the foam storage tank into a driving chamber and a stirring chamber arranged vertically. The foam storage tank is equipped with a stirring assembly located in the stirring chamber for stirring high-pressure gas and foam extinguishing agent and a driver located in the driving chamber. The driver is driven to the stirring assembly for driving the stirring assembly to rotate.

3. The foam extinguishing agent fire extinguishing test equipment as described in claim 2, characterized in that, The stirring assembly includes a stirring shaft, multiple connecting rods, and multiple stirring rods; the stirring shaft is vertically arranged and is connected to the driver for transmission; the multiple connecting rods are arranged on the stirring shaft and are arranged circumferentially along the stirring shaft, one end of the connecting rod is rotatably connected to the stirring shaft, and the other end is connected to the stirring rod; the stirring rod is an arc-shaped structure with the same curvature as the bottom of the foam storage tank.

4. The foam extinguishing agent fire extinguishing test equipment as described in claim 3, characterized in that, The connecting rod is fitted with a slider that is slidably connected to the connecting rod; the slider is provided with a plurality of stirring blades arranged along the circumference of the slider; the connecting rod is also fitted with an elastic element, and the two ends of the elastic element are respectively connected to the slider and the stirring rod.

5. The foam extinguishing agent fire extinguishing test equipment as described in claim 3, characterized in that, The stirring shaft is also provided with a scraper located above the connecting rod. The scraper is inclined and one side of the scraper is in contact with the inner wall of the foam storage tank.

6. The foam extinguishing agent fire extinguishing test equipment as described in claim 1, characterized in that, The test bench includes a support frame and a fire extinguishing oil tray; the support frame is located on the ground; the fire extinguishing oil tray is located on the support frame and is used to hold the test samples.

7. The foam extinguishing agent fire extinguishing test equipment as described in claim 6, characterized in that, The first data collector is a heat flow sensor, which is located at the edge of the fire extinguishing oil pan.

8. The foam extinguishing agent fire extinguishing test equipment as described in claim 1, characterized in that, The second data collector includes a pressure gauge and a flow meter, both of which are located at the end of the pipeline.

9. The foam extinguishing agent fire extinguishing test equipment as described in claim 1, characterized in that, The pipeline is equipped with a solenoid valve for controlling the delivery of the foam extinguishing agent.

10. The foam extinguishing agent fire extinguishing test equipment as described in claim 9, characterized in that, A foam extinguishing agent fire extinguishing test device is also equipped with a control system, which is electrically connected to the solenoid valve, the first data collector, and the second data collector.

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