Device and method for measuring diffusion and damage of foam on flowing combustion oil surface

Abstract

The invention discloses a device and a method for measuring diffusion and damage of foam on a flowing combustion oil surface. The device comprises a flowing combustion platform, an oil supply system, a baffle system, a foam injection system, a measurement system, a linkage displacement system, a data acquisition and analysis system and an intelligent control system. The flowing combustion platform contains flowing combustion oil and the like, and the bottom of the flowing combustion platform is smooth and transparent. The foam injection system injects foam into a flowing combustion oil surface to realize local fire extinguishing; the measuring system is located at the bottom of the flowing combustion platform and recognizes brightness changes and the like of a shooting area covered with foam. The linkage displacement system controls foam injection and measurement positions at the same time, so that integration of foam injection and image acquisition is realized; the data acquisition and analysis system acquires information in real time, calculates a foam dynamic coverage area in combination with brightness change of a measurement area, and determines foam coverage and damage characteristics. According to the invention, the diffusion process of foam on the flowing combustion oil surface under different working conditions and the thermal stability after local coverage can be simulated, and guidance is provided for extinguishing flowing fire.

Description

Technical Field

[0001] The invention belongs to the technical field of foam fire extinguishing performance testing, and in particular relates to a device and method for measuring the diffusion and destruction of foam on a flowing burning oil surface. Background Art

[0002] With the rapid development of my country's economy, the demand for liquid fuel is increasing day by day. In order to meet the storage demand for liquid fuel, the number of storage tanks in my country is increasing, and the volume of storage tanks is increasing. For example, a 100,000 cubic meter storage tank has become a commonly used type of storage tank in the tank area. With the rapid increase in the storage volume of oil products, the risk of tank fires has also increased accordingly. In addition to being flammable and explosive, the oil products stored in the tank area are also highly fluid. Once a fire accident occurs in the tank, the leaked oil will form a flowing fire after burning. The flowing fire spreads quickly, and strong heat convection and heat radiation will be generated during the combustion process. The flow and diffusion of the burning oil surface can easily trigger a domino effect and cause chain consequences, resulting in major casualties and serious economic losses. Foam fire extinguishing is currently the most commonly used means of extinguishing flowing fires. Foam extinguishing of flowing fires mainly relies on the coverage of the surface of the flowing burning oil by foam. Whether the foam can directly cover it determines whether the foam can effectively extinguish the fire. For flowing fires, the burning oil layer is constantly flowing, and the diffusion process of the foam in motion is significantly different from the diffusion process on the traditional static oil surface. At the same time, the thermal stability of the foam covering the oil layer surface also determines the fire extinguishing efficiency. During the foam covering process, on the one hand, it will be impacted by the flame radiation, and on the other hand, there will be convection heat transfer between the flame and the foam, which will cause the covered foam to be subjected to a large heat flux and be easily damaged, thus causing re-ignition and affecting the actual fire extinguishing effect. Therefore, it is necessary to study the diffusion and destruction process of foam on the flowing burning oil surface.

[0003] In order to measure the stability of foam in a hot environment, some scholars have developed relevant testing devices. Authorization Announcement No. CN 115060627 B discloses a testing device and method for the spreadability and stability of foam fire extinguishing agents. The device and method mainly pass foam into a non-burning high-temperature static oil pool, use a camera to record the foam spreading process, and use an image processing algorithm to calculate the quantitative spreading area. Authorization Announcement No. CN 111157670 B discloses a test device for testing the control of flowing fire by polymorphic foam. The device mainly uses a polymorphic foam spraying mechanism to spray different types of foam into a flowing fire simulation device, specifically studying the interception and control effect of foam on flammable liquid flowing fire, and does not focus on the actual movement process of the foam and the fire extinguishing mechanism. Application publication number CN 118050121 A discloses an experimental device and method for simulating the leakage and diffusion of submarine oil / gas pipelines, the combustion characteristics of liquid surface fuel and its suppression mechanism. The device mainly simulates the flow, diffusion and combustion of oil products from underwater leakage to the surface, and simulates the effects of different fire extinguishing agents such as foam, water mist and powder, but does not analyze the movement process and stability of the fire extinguishing medium. Authorization announcement number CN 117571768B discloses a convection and radiation coupled foam thermal stability test and re-ignition device. The device mainly introduces convection modules and radiation modules to simulate the foam destruction process under the action of convection and radiation coupling. In the test, the foam is statically covered on the surface of the oil product.

[0004] Through the above investigation, it was found that: on the one hand, some of the invented devices for foam spreading are mainly aimed at the diffusion on the static oil surface, and mainly rely on the pixel recognition method to obtain the diffusion area, without considering the ignition situation. This is mainly because ignition will interfere with image recognition. This simulation process has a certain deviation from the diffusion in the actual fire scene. On the other hand, the fire extinguishing test device for flowing fires only analyzes the parameters such as the fire extinguishing time and the amount of fire extinguishing agent at a macro level, and does not deeply analyze the actual diffusion process of the fire extinguishing agent. However, the actual flowing fire scene is different, and the parameters obtained from the macro test are somewhat different from the actual one, and the guiding significance is limited. For actual flowing fires, simulating the diffusion and coverage process of foam on the flowing liquid surface and its stability in a thermal environment is of great significance to actual fire extinguishing. In summary, it is necessary to develop a device and method for measuring the diffusion and destruction of foam on the flowing burning oil surface. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a device for measuring the diffusion and destruction of foam on a flowing burning oil surface, which can simulate the flowing burning scene of a flowing fire, and can simulate the real-time spreading and destruction process of foam on a flowing burning oil surface under different working conditions by changing the oil flow rate, the thickness of the flowing oil layer, the foam injection position and the foam injection amount, so as to provide a reference for the flowing fire extinguishing technology.

[0006] The present invention also aims to provide a method for measuring the diffusion and destruction of foam on the surface of flowing burning oil.

[0007] According to an embodiment of the present invention, a device for measuring the diffusion and destruction of foam on a flowing burning oil surface comprises: a flowing burning platform, the upper part of which is open and used to simulate and demonstrate the spreading and destruction process of foam on a flowing burning oil surface, and the foam diffusion area can be more accurately identified through the transparent bottom of the flowing oil tank; an oil supply system is used to transport oil products; a baffle system, the baffle system controls the thickness of the flowing oil layer by adjusting the connection depth between the movable baffle and the flowing oil tank; a foam injection system, the foam injection system is used to spray foam into the inside of the flowing burning platform to achieve local fire extinguishing; a measuring system, the measuring system is used to photograph the spreading range and destruction degree of foam under different working conditions; a linkage displacement system, the linkage displacement system can move back and forth on a slide rail through a first motion device and a second motion device, and linkage controls the position of foam injection and image acquisition to achieve integration of foam injection and image acquisition; a data acquisition and analysis system is used to collect foam dynamic information in real time, calculate the dynamic coverage area of ​​foam in combination with the brightness change of the measurement area, and determine the foam coverage and destruction characteristics; an intelligent control system is used to accurately control the oil product introduction rate, linkage displacement and image recognition, etc.

[0008] According to an embodiment of the present invention, a device for measuring the diffusion and destruction of foam on the surface of flowing burning oil is provided. The flowing burning platform mainly includes the flowing oil trough, the oil storage trough, the lifting bracket and the igniter; the flowing oil trough is a rectangular cavity with two short side openings and an upper surface opening, and is used for the oil to flow on the upper part of the bottom surface of the flowing oil trough; one end of the oil storage trough is tightly connected to the flowing oil trough, and the other end is connected to the oil supply system, and is used to receive the oil provided by the oil supply system, and flow evenly to the surface of the flowing oil trough by overflow, so that the oil flows evenly from one end to the other end of the surface of the flowing oil trough; the lifting bracket is used to adjust the height of the flowing oil trough and ensure that the flowing oil trough is horizontal, so that the oil flows evenly on the bottom surface of the flowing oil trough; the igniter is used to ignite the oil inside the oil storage trough to form a combustion environment; the flowing burning platform is used in conjunction with the flowing oil trough, the oil storage trough, the lifting bracket and the igniter, so that the oil provided by the oil supply system flows and burns evenly from one side to the other side in the flowing burning platform.

[0009] Optionally, the bottom surface of the oil flow tank can be made of transparent, high temperature resistant, low friction coefficient quartz glass, so that the measurement system can accurately identify the foam diffusion area and damage.

[0010] Optionally, the igniter can be a pulse igniter with high stability and be placed at a certain safe distance from the oil storage tank to achieve stable ignition of the oil surface and ensure the safety of the device.

[0011] According to an embodiment of the present invention, a device for measuring the diffusion and destruction of foam on the surface of flowing burning oil, the oil supply system is used to transport oil into the flowing combustion platform, and mainly includes a first power pump, a valve and a liquid container; the first power pump provides power for the oil supply, and the first power pump is connected to the intelligent control system to achieve different oil flow rates; the valve is used to control the opening and closing of the pipeline; the liquid container is used to hold the oil.

[0012] According to an embodiment of the present invention, a device for measuring the diffusion and destruction of foam on the surface of flowing burning oil, the baffle system mainly includes the movable baffle, a power unit and a fixed bracket; the movable baffle is arranged on the other side of the short side of the flowing oil trough and is tightly connected to the flowing oil trough; the power unit is arranged on the fixed bracket, and is used to adjust the connection depth between the movable baffle and the flowing oil trough, so as to adjust the thickness of the oil product in the flowing combustion platform; the fixed bracket is used to support the movable baffle and the power unit.

[0013] Advantageously, the movable baffle should be made of fireproof material, and the connection depth with the flowing oil tank can be adjusted by the power device, so that oil products of different thicknesses can be stored inside the flowing combustion platform, thereby simulating the surface flow process of oil products under different oil layer thicknesses, and further realizing thin oil layer flow combustion simulation and thick oil layer surface flow combustion simulation.

[0014] According to an embodiment of the present invention, a device for measuring the diffusion and destruction of foam on the surface of flowing burning oil, the foam injection system mainly includes a foam supply device, a second power pump and a foam injection device; the foam supply device is used to prepare foam; the second power pump is connected to the intelligent control system to provide power for foam injection; the foam injection device is arranged below the first motion device, and is used to spray foam into the interior of the flowing combustion platform.

[0015] Optionally, according to actual test needs, the foam supplied by the foam supply device may be fluoroprotein foam, aqueous film-forming foam, gel foam, etc., and no specific limitation is made here.

[0016] Optionally, the second power pump may be a centrifugal pump, an axial flow pump, a vortex pump, a mixed flow pump, etc., and no specific limitation is made here.

[0017] According to an embodiment of the present invention, a device for measuring the diffusion and destruction of foam on the surface of flowing burning oil is provided. The measuring system is arranged below the transparent bottom surface of the flowing oil tank and is parallel to the bottom surface. The measuring system can identify the pixel RGB of the bright area of ​​the flowing burning flame and the dark area covered by the foam, as well as the pixel RGB changes of the photographed area during the foam destruction process. The measuring system is connected to the linkage displacement system to monitor the dynamic spreading range and degree of destruction of the foam at different positions on the surface of the flowing burning oil.

[0018] According to an embodiment of the present invention, a device for measuring the diffusion and destruction of foam on the surface of flowing burning oil, the linkage displacement system mainly includes a slide rail, a first motion device, a second motion device and a bracket; the slide rail is arranged above the flowing combustion platform, and is used for the first motion device and the second motion device to move back and forth so as to adjust the position of foam injection and image acquisition; the first motion device is installed on the slide rail along the short side direction of the flowing oil groove, and is used for moving the foam injection device along the short side direction of the flowing oil groove; the second motion device is installed on the slide rail along the long side direction of the flowing oil groove, and is used for the linkage displacement of the foam injection device and the measuring system, so as to monitor the dynamic spreading and destruction of the sprayed foam at different positions on the surface of the flowing burning oil, and reduce the shooting angle error; the bracket is used to connect the slide rail, the measuring system and the foam injection device.

[0019] Optionally, the power components of the first motion device and the second motion device may be stepper motors, which have high structural reliability, fast response, and smooth movement, so as to accurately and smoothly control the position of foam injection and image acquisition on the flowing burning oil surface.

[0020] According to an embodiment of the present invention, a device for measuring the diffusion and destruction of foam on the surface of flowing burning oil, the data acquisition and analysis system is used to collect pixel RGB information of the image taken by the measurement system, and then determine the dynamic spreading area of ​​the foam on the surface of flowing burning oil and the destruction rate after local coverage through an image recognition algorithm based on the pixel RGB data of the collected image.

[0021] Advantageously, the data acquisition and analysis system analyzes pixel RGB changes in the photographed area according to the coverage of the flame by the foam, identifies the flowing burning area through the bright part of the image, identifies the dynamic situation of foam spreading and destruction through the dark part of the image, and further determines the real-time spreading area and destruction rate of the foam on the flowing burning oil surface; before the data acquisition and analysis system determines the foam spreading area and destruction rate based on the image recognition algorithm, it should make multiple corrections to the foam area identified by the data acquisition and analysis system according to the actual spreading area of ​​the foam when not ignited, so as to obtain the actual area corresponding to a single pixel and the RGB value range of the pixel corresponding to the foam, thereby reducing measurement errors.

[0022] According to an embodiment of the present invention, a device for measuring the diffusion and destruction of foam on the surface of flowing burning oil, the intelligent control system can control the first power pump to adjust the flow rate of the oil; the intelligent control system can adjust the connection depth between the movable baffle and the flowing oil groove to control the thickness of the oil in the flowing combustion platform; the intelligent control system can control the igniter to ignite the oil to form a combustion environment; the intelligent control system can control the second power pump to control the foam supply flow; the intelligent control system can control the linkage displacement system to control the foam injection and image acquisition position; the intelligent control system can receive data and analysis results from the data acquisition and analysis system.

[0023] A method for measuring the diffusion and destruction of foam on a flowing burning oil surface according to an embodiment of the present invention comprises the following steps:

[0024] Step S1, select a certain foam type, turn on the intelligent control system, and preset parameters such as the depth of the flowing oil layer, the oil supply rate, the foam fire extinguishing position, the foam spraying intensity, and the spraying time;

[0025] Step S2, adjusting the lifting bracket to ensure that the flowing combustion platform is level, which is convenient for the later flowing combustion. After leveling, the intelligent control system turns on the measuring system, and at the same time adjusts the connection depth between the movable baffle and the flowing oil tank according to the set flowing oil layer depth;

[0026] Step S3, the intelligent control system turns on the linkage displacement system to move the foam injection device and the measurement system to the set positions according to the preset parameters;

[0027] Step S4, the intelligent control system controls the first power pump to supply oil to the flowing combustion platform until the liquid level reaches a preset flowing oil layer depth, and stops supplying oil;

[0028] Step S5, the intelligent control system controls the igniter to ignite to form a combustion environment, and then the intelligent control system controls the first power pump to supply oil to the flowing combustion platform at a preset oil supply rate;

[0029] Step S6, the intelligent control system controls the foam injection intensity and injection time according to the preset values, and then the measurement system follows and photographs the real-time spreading process and destruction of the foam on the flowing burning oil surface through the linkage displacement system;

[0030] Step S7, the data acquisition and analysis system acquires pixel RGB data of the image captured by the measurement system, and determines the dynamic spreading area of ​​the foam on the flowing burning oil surface and the destruction rate after local coverage through an image recognition algorithm;

[0031] Step S8, select different foam types, repeat the above operations, control the preset parameters, simulate the composite working conditions of different flowing oil layer thicknesses, different oil surface flow rates, different foam injection positions and different foam injection amounts, and select the foam type for flowing fire according to the real-time spreading area and destruction rate of the foam on the flowing burning oil surface under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention and the above and / or additional aspects and advantages will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0033] Figure 1 The present invention is a schematic diagram of the overall structure of a device for measuring the diffusion and destruction of foam on the surface of flowing burning oil.

[0034] Figure 2 The present invention is a side view of some important structures of a device for measuring the diffusion and destruction of foam on the surface of flowing burning oil according to an embodiment of the present invention.

[0035] In the present application, all drawings are schematic drawings, which are only used to illustrate the principles of the present invention and are not drawn according to the actual scale.

[0036] Reference numerals:

[0037] Device for measuring the diffusion and destruction of foam on the surface of flowing burning oil 1000,

[0038] Flowing combustion platform 100,

[0039] The oil flow tank 110, the oil storage tank 120, the lifting bracket 130, the igniter 140,

[0040] Oil supply system 200,

[0041] The first power pump 210, the valve 220, the liquid container 230,

[0042] Baffle system 300,

[0043] The movable baffle 310, the power device 320, the fixed bracket 330,

[0044] Foam injection system 400,

[0045] The foam supply device 410, the second power pump 420, the foam injection device 430,

[0046] Measurement system 500,

[0047] Linkage displacement system 600,

[0048] Slide rail 610, first motion device 620, second motion device 630, bracket 640,

[0049] Data acquisition and analysis system 700,

[0050] Intelligent control system 800. DETAILED DESCRIPTION

[0051] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0052] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0053] The following describes a device for measuring the diffusion and destruction of foam on the surface of flowing burning oil according to an embodiment of the present invention with reference to the accompanying drawings.

[0054] The device 1000 for measuring the diffusion and destruction of foam on the surface of flowing burning oil according to an embodiment of the present invention is as follows: Figure 1 As shown, it includes: a flowing combustion platform 100, an oil supply system 200, a baffle system 300, a foam injection system 400, a measurement system 500, a linkage displacement system 600, a data acquisition and analysis system 700 and an intelligent control system 800.

[0055] Among them, Figure 1As shown, the flowing combustion platform 100 is composed of a flowing oil tank 110, an oil storage tank 120, a lifting bracket 130 and an igniter 140. The flowing oil tank 110 is a rectangular cavity with two short side openings and an upper surface opening, and is used for oil to flow on the upper part of the bottom surface of the flowing oil tank 110; one end of the oil storage tank 120 is tightly connected to the flowing oil tank 110, and the other end is connected to the oil supply system 200, and is used to receive the oil provided by the oil supply system 200, and evenly flow to the surface of the flowing oil tank 110 by overflow, so that the oil flows evenly from one end to the other end of the surface of the flowing oil tank 110; the lifting bracket 130 is used to adjust the oil storage tank 120 ... The height of the flowing oil trough 110 is adjusted and the flowing oil trough 110 is ensured to be horizontal so that the oil can flow evenly on the bottom surface of the flowing oil trough 110; the igniter 140 is used to ignite the oil inside the oil storage tank 120 to form a combustion environment; the flowing combustion platform 100 is used in conjunction with the flowing oil trough 110, the oil storage tank 120, the lifting bracket 130 and the igniter 140, so that the oil supply system 600 provides oil to flow and burn evenly from one side to the other side in the flowing combustion platform 100.

[0056] Optionally, the bottom surface of the flowing oil tank 110 can be made of transparent high-temperature resistant quartz glass, so that the measuring system 500 can accurately identify the foam diffusion area and damage situation.

[0057] Optionally, the igniter 140 may be a pulse igniter with high stability and be placed at a certain safe distance from the oil storage tank 120 to achieve stable ignition of the oil surface and ensure the safety of the device.

[0058] like Figure 1 As shown, the oil supply system 200 mainly includes a first power pump 210, a valve 220 and a liquid container 230; the first power pump 210 provides power for oil supply, and the first power pump 210 is connected to the intelligent control system 800 to achieve different oil flow rates; the valve 220 is used to control the opening and closing of the pipeline; the liquid container 230 is used to hold oil.

[0059] like Figure 1 As shown, the baffle system 300 mainly includes a movable baffle 310, a power device 320 and a fixed bracket 330; the movable baffle 310 is arranged on the other side of the short side of the flowing oil groove 110 and is tightly connected to the flowing oil groove 110; the power device 320 is arranged on the fixed bracket 330, which is used to adjust the connection depth between the movable baffle 310 and the flowing oil groove 110, so as to adjust the thickness of the oil in the flowing combustion platform 100; the fixed bracket 330 is used to support the movable baffle 310 and the power device 320.

[0060] Advantageously, the movable baffle 310 should be made of fireproof material, and the connection depth with the flowing oil tank 110 can be adjusted by the power device 320, so that oil of different thicknesses can be stored inside the flowing combustion platform 100, which is convenient for simulating the surface flow process of oil under different oil layer thicknesses, and further realizing thin oil layer flow combustion simulation and thick oil layer surface flow combustion simulation.

[0061] like Figure 1 As shown, the foam injection system 400 mainly includes a foam supply device 410, a second power pump 420 and a foam injection device 430; the foam supply device 410 is used to prepare foam; the second power pump 420 is connected to the intelligent control system 800 to provide power for foam injection; the foam injection device 430 is arranged under the first motion device 620, and is used to spray foam into the interior of the flowing combustion platform 100.

[0062] Optionally, according to actual test needs, the foam supplied by the foam supply device 410 may be fluoroprotein foam, aqueous film-forming foam, gel foam, etc., and no specific limitation is made here.

[0063] Optionally, the second power pump 420 may be a centrifugal pump, an axial flow pump, a vortex pump, a mixed flow pump, etc., which is not specifically limited here.

[0064] like Figure 1 As shown, the measurement system 500 is arranged below the transparent bottom surface of the flowing oil tank 110 and is parallel to the bottom surface. It can identify the pixel RGB of the bright area of ​​the flowing burning flame and the dark area covered by the foam, as well as the pixel RGB changes of the shooting area during the foam destruction process; the measurement system 500 is connected to the linkage displacement system 600 to monitor the dynamic spreading range and degree of destruction of the foam at different positions on the flowing burning oil surface.

[0065] like Figure 1 As shown, the linkage displacement system 600 mainly includes a slide rail 610, a first motion device 620, a second motion device 630 and a bracket 640; the slide rail 610 is arranged above the flowing combustion platform 100, and is used for the first motion device 620 and the second motion device 630 to move back and forth, so as to adjust the position of foam injection and image acquisition; the first motion device 620 is installed on the slide rail 610 along the short side direction of the flowing oil tank 110, and is used to move the foam injection device 430 along the short side direction of the flowing oil tank 110; the second motion device 630 is installed on the slide rail 610 along the long side direction of the flowing oil tank 110, and is used for the linkage displacement of the foam injection device 430 and the measuring system 500, so as to monitor the dynamic spreading and destruction of the sprayed foam at different positions of the flowing combustion oil surface, and reduce the shooting angle error; the bracket 640 is used to connect the slide rail 610, the measuring system 500 and the foam injection device 430.

[0066] Optionally, the power components of the first motion device 620 and the second motion device 630 can be stepper motors, which have high structural reliability, fast response, and smooth movement, so as to accurately and smoothly control the position of foam injection and image acquisition on the flowing burning oil surface.

[0067] In certain specific embodiments, such as Figure 2 As shown, the bracket 640 connects the foam injection device 430 and the measuring system 500, and the foam injection device 430 and the measuring system 500 are displaced in conjunction to realize the integration of foam injection and image acquisition; the measuring system 500 monitors the dynamic spreading range of the foam on the flowing burning oil surface and the destruction process after spreading in real time through the transparent bottom surface of the flowing oil tank 110.

[0068] like Figure 1 As shown, the data acquisition and analysis system 700 is used to collect pixel RGB information of the image taken by the measurement system 500, and then determine the dynamic spreading area of ​​the foam on the flowing burning oil surface and the destruction rate after local coverage through an image recognition algorithm based on the pixel RGB data of the collected image.

[0069] Advantageously, the data acquisition and analysis system 700 analyzes the pixel RGB changes in the shooting area according to the coverage of the foam on the flame, identifies the flowing burning area through the bright part of the image, identifies the dynamic situation of foam spreading and destruction through the dark part of the image, and then determines the real-time spreading area and destruction rate of the foam on the flowing burning oil surface; before the data acquisition and analysis system 700 determines the foam spreading area and destruction rate based on the image recognition algorithm, the foam area identified by the data acquisition and analysis system 700 should be corrected multiple times according to the actual spreading area of ​​the foam when not ignited, so as to obtain the actual area corresponding to a single pixel and the RGB value range of the pixel corresponding to the foam, thereby reducing the measurement error.

[0070] like Figure 1 As shown, the intelligent control system 800 can control the first power pump 210, thereby adjusting the flow rate of the oil; the intelligent control system 800 can adjust the connection depth between the movable baffle 310 and the flowing oil groove 110, thereby controlling the thickness of the oil in the flowing combustion platform 100; the intelligent control system 800 can control the igniter 140 to ignite the oil and form a combustion environment; the intelligent control system 800 can control the second power pump 420 to control the foam supply flow; the intelligent control system 800 can control the linkage displacement system 600, thereby controlling the foam injection and image acquisition position; the intelligent control system 800 can receive data and analysis results from the data acquisition and analysis system 700.

[0071] A method for measuring the diffusion and destruction of foam on a flowing burning oil surface according to an embodiment of the present invention comprises the following steps:

[0072] Step S1, select a certain foam type, open the intelligent control system 800, and preset parameters such as the depth of the flowing oil layer, the oil supply rate, the foam extinguishing position, the foam spraying intensity, and the spraying time;

[0073] Step S2, adjusting the lifting bracket 130 to ensure that the flowing combustion platform 100 is level, which is convenient for the later flowing combustion. After leveling, the intelligent control system 800 turns on the measuring system 500, and at the same time adjusts the connection depth between the movable baffle 310 and the flowing oil tank 110 according to the set flowing oil layer depth;

[0074] Step S3, the intelligent control system 800 turns on the linkage displacement system 600, and moves the foam spraying device 430 and the measuring system 500 to the set positions according to the preset parameters;

[0075] Step S4, the intelligent control system 800 controls the first power pump 210 to supply oil to the flowing combustion platform 100 until the liquid level reaches a preset flowing oil layer depth, and stops supplying oil;

[0076] Step S5, the intelligent control system 800 controls the igniter 140 to ignite and form a combustion environment, and then the intelligent control system 800 controls the first power pump 210 to supply oil into the flowing combustion platform 100 at a preset oil supply rate;

[0077] Step S6, the intelligent control system 800 controls the foam injection intensity and injection time according to the preset values, and then the measurement system 500 follows and shoots the real-time spreading process and destruction of the foam on the flowing burning oil surface through the linkage displacement system 600;

[0078] Step S7, the data acquisition and analysis system 700 acquires pixel RGB data of the image captured by the measurement system 500, and determines the dynamic spreading area of ​​the foam on the flowing burning oil surface and the destruction rate after local coverage through an image recognition algorithm;

[0079] Step S8, select different foam types, repeat the above operations, control the preset parameters, simulate the composite working conditions of different flowing oil layer thicknesses, different oil surface flow rates, different foam injection positions and different foam injection amounts, and select the foam type for flowing fire according to the real-time spreading area and destruction rate of the foam on the flowing burning oil surface under different working conditions.

[0080] The foam thermal stability test principle and image recognition algorithm in the device and method for measuring the diffusion and destruction of foam on the flowing burning oil surface according to the embodiment of the present invention are well known to ordinary technicians in the field and will not be described in detail here.

[0081] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0082] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device and method for measuring the diffusion and destruction of foam on the surface of flowing burning oil, the device mainly comprises a flowing burning platform, an oil supply system, a baffle system, a foam injection system, a measurement system, a linkage displacement system, a data acquisition and analysis system and an intelligent control system, and is characterized in that: The flowing combustion platform mainly includes a flowing oil tank, an oil storage tank, a lifting bracket and an igniter; the flowing oil tank is a rectangular cavity with two short side openings and an upper surface opening, which is used for the oil to flow on the upper part of the bottom surface of the flowing oil tank. At the same time, the bottom surface of the flowing oil tank is made of a transparent and high temperature resistant smooth material so that the measurement system can accurately identify the foam diffusion area; One end of the oil storage tank is tightly connected to the flowing oil tank, and the other end is connected to the oil supply system, so as to receive the oil provided by the oil supply system and evenly flow to the surface of the flowing oil tank by overflow, so as to realize the uniform flow of the oil from one end to the other end of the flowing oil tank surface; the lifting bracket is used to adjust the height of the flowing oil tank to ensure that the oil flows evenly on the bottom surface of the flowing oil tank; the igniter is used to ignite the oil inside the oil storage tank to form a combustion environment; the flowing combustion platform is used in conjunction with the flowing oil tank, the oil storage tank, the lifting bracket and the igniter, so as to realize the oil provided by the oil supply system to flow and burn evenly from one side to the other side in the flowing combustion platform; The oil supply system is used to transport oil products into the flowing combustion platform, and mainly includes a first power pump, a valve and a liquid container; the first power pump provides power for the oil supply, and the first power pump is connected to the intelligent control system to achieve different oil flow rates; the valve is used to control the opening and closing of the pipeline; the liquid container is used to hold the oil products; The baffle system mainly includes a movable baffle, a power device and a fixed bracket; the movable baffle is arranged on the other side of the short side of the flowing oil groove and is tightly connected to the flowing oil groove, so that a certain thickness of oil can be stored inside the flowing combustion platform, which is convenient for the measurement system to monitor the spreading and destruction of foam on flowing combustion oil layers of different thicknesses; the power device is arranged on the fixed bracket, and is used to adjust the connection depth between the movable baffle and the flowing oil groove, so as to adjust the thickness of the oil in the flowing combustion platform; the fixed bracket is used to support the movable baffle and the power device; The foam injection system mainly includes a foam supply device, a second power pump and a foam injection device; the foam supply device is used to prepare foam; the second power pump is connected to the intelligent control system to provide power for foam injection; the foam injection device is arranged below the first motion device and is used to spray foam into the interior of the flowing combustion platform; The measuring system is arranged below the transparent bottom surface of the flowing oil tank and is parallel to the bottom surface, and can identify the pixel RGB of the bright area of ​​the flowing burning flame and the dark area covered by the foam, as well as the pixel RGB changes of the shooting area during the foam destruction process; the measuring system is connected to the linkage displacement system to monitor the dynamic spreading range and destruction degree of the foam at different positions on the flowing burning oil surface; The linkage displacement system mainly includes a slide rail, a first motion device, a second motion device and a bracket; the slide rail is arranged above the flowing combustion platform, and is used for the first motion device and the second motion device to move back and forth, so as to adjust the position of foam injection and image acquisition; the first motion device is installed on the slide rail along the short side direction of the flowing oil tank, and is used to move the foam injection device along the short side direction of the flowing oil tank; the second motion device is installed on the slide rail along the long side direction of the flowing oil tank, and is used for the linkage displacement of the foam injection device and the measurement system, so as to monitor the dynamic spreading and destruction of the sprayed foam at different positions of the flowing combustion oil surface, and reduce the shooting angle error; the bracket is used to connect the slide rail, the measurement system and the foam injection device; The data acquisition and analysis system is used to collect pixel RGB information of the image taken by the measurement system, and then determine the dynamic spreading area of ​​the foam on the flowing burning oil surface and the destruction rate after local coverage through an image recognition algorithm based on the pixel RGB data of the collected image; The intelligent control system can control the first power pump to adjust the flow rate of the oil product; the intelligent control system can adjust the connection depth between the movable baffle and the flowing oil groove to control the thickness of the oil product in the flowing combustion platform; the intelligent control system can control the igniter to ignite the oil product to form a combustion environment; the intelligent control system can control the second power pump to control the foam supply flow rate; The intelligent control system can control the linkage displacement system, and further control the foam injection and image acquisition position; the intelligent control system can receive the data and analysis results of the data acquisition and analysis system.

2. A device and method for measuring the diffusion and destruction of foam on the surface of flowing burning oil according to claim 1, characterized in that The data acquisition and analysis system analyzes the pixel RGB changes in the shooting area according to the coverage of the foam on the flame, identifies the flowing burning area through the bright part of the image, and identifies the dynamic situation of foam spreading and destruction through the dark part of the image, thereby determining the real-time spreading area and destruction rate of the foam on the flowing burning oil surface; before the data acquisition and analysis system determines the foam spreading area and destruction rate based on the image recognition algorithm, it should make multiple corrections to the foam area identified by the data acquisition and analysis system according to the actual spreading area of ​​the foam when not ignited, so as to obtain the actual area corresponding to a single pixel and the RGB value range of the pixel corresponding to the foam, thereby reducing the measurement error.

3. A device and method for measuring the diffusion and destruction of foam on the surface of flowing burning oil according to claim 1, characterized in that The bottom surface of the flowing oil tank is made of a transparent material that is resistant to high temperatures, smooth, and highly chemically stable, so that the measurement system can accurately identify the diffusion area and damage of the foam on the surface of the flowing burning oil through the transparent bottom surface.

4. A device and method for measuring the diffusion and destruction of foam on the surface of flowing burning oil according to claim 1, characterized in that The oil storage tank, the flowing oil tank and the connecting area of ​​the movable baffle are tightly combined to avoid oil leakage during the oil flow process, thereby ensuring the safety of the device.

5. The device and method for measuring the diffusion and destruction of foam on the surface of flowing burning oil according to claim 1, characterized in that The movable baffle can be adjusted by the power device to have a connection depth with the flowing oil groove so as to form a receiving area of ​​different depths with the flowing oil groove, simulating the surface flow process of oil products under different oil layer thicknesses, thereby realizing thin oil layer flow simulation and thick oil layer surface flow simulation.

6. A device and method for measuring the diffusion and destruction of foam on the surface of flowing burning oil according to claim 1, characterized in that The intelligent control system can control other systems and adjust parameter sizes in real time to achieve composite working condition simulation of different oil surface flow rates, different foam injection positions, different foam injection amounts and different flowing oil layer thicknesses.

7. A device and method for measuring the diffusion and destruction of foam on the surface of flowing burning oil, used for the device for measuring the diffusion and destruction of foam on the surface of flowing burning oil as described in any one of claims 1 to 6, characterized in that: The following steps are involved: Step S1, select a certain foam type, turn on the intelligent control system, and preset parameters such as the depth of the flowing oil layer, the oil supply rate, the foam fire extinguishing position, the foam spraying intensity, and the spraying time; Step S2, adjusting the lifting bracket to ensure that the flowing combustion platform is level, which is convenient for the later flowing combustion. After leveling, the intelligent control system turns on the measuring system, and at the same time adjusts the connection depth between the movable baffle and the flowing oil tank according to the set flowing oil layer depth; Step S3, the intelligent control system turns on the linkage displacement system to move the foam injection device and the measurement system to the set positions according to the preset parameters; Step S4, the intelligent control system controls the first power pump to supply oil to the flowing combustion platform until the liquid level reaches a preset flowing oil layer depth, and stops supplying oil; Step S5, the intelligent control system controls the igniter to ignite to form a combustion environment, and then the intelligent control system controls the first power pump to supply oil to the flowing combustion platform at a preset oil supply rate; Step S6, the intelligent control system controls the foam injection intensity and injection time according to the preset values, and then the measurement system follows and photographs the real-time spreading process and destruction of the foam on the flowing burning oil surface through the linkage displacement system; Step S7, the data acquisition and analysis system acquires pixel RGB information of the image captured by the measurement system, and determines the dynamic spreading area of ​​the foam on the flowing burning oil surface and the destruction rate after local coverage through an image recognition algorithm; Step S8, select different foam types, repeat the above operations, control the preset parameters, simulate the composite working conditions of different flowing oil layer thicknesses, different oil surface flow rates, different foam injection positions and different foam injection amounts, and select the foam type for flowing fire according to the real-time spreading area and destruction rate of the foam on the flowing burning oil surface under different working conditions.

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