20 results about "Fire experiment" patented technology

1. Name of the product in this design: Cone Calorimeter (Version A2). 2. Purpose of this design: To measure the heat generated during fire experiments. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention discloses a multifunctional double-layer photovoltaic glass curtain wall fire experiment device and method, and belongs to the technical field of photovoltaic curtain walls and fire safety, and the device comprises a combustion chamber which is internally provided with a fire source; the combustion chamber is provided with a fire outlet and an air inlet; the variable photovoltaic curtain wall structure comprises an inner facade curtain wall and an outer facade curtain wall, and the inner facade curtain wall is located on the fire outlet side of the combustion chamber; the outer vertical face curtain wall is located on the fire outlet side of the combustion chamber and is parallel to the inner vertical face curtain wall, and the distance between the outer vertical face curtain wall and the inner vertical face curtain wall can be adjusted. The temperature measuring system is arranged between the inner facade curtain wall and the outer facade curtain wall and on the surface of the photovoltaic curtain wall; the heat release analysis system is arranged corresponding to the combustion chamber and the variable photovoltaic curtain wall structure; the mass loss measuring system is arranged corresponding to the fire source; and the high-speed camera system is arranged corresponding to the inner facade curtain wall and the outer facade curtain wall. According to the invention, the fire behavior after the building curtain wall and the photovoltaic curtain wall structure are heated in a real fire can be simulated.

The present application relates to the technical field of liquid fire experiment, more particularly, to a correction method and device for liquid fire spread speed based on ambient temperature, wherein the fuel density, surface tension coefficient and maximum temperature of surface flow are obtained, and the three unknown quantities are substituted into the expression of surface flow speed; then, the parameters of the expression are inversely solved according to the data of reference experiment, and the relationship between the liquid fire spread speed and ambient temperature is obtained, so as to realize the correction of the error caused by the difference between the ambient temperature of subsequent experiment and that of reference experiment. The whole process is fast and convenient, and the correction relationship of the present application has good correction effect after verification, which can effectively eliminate the error caused by ambient temperature and solve the problem that the liquid fire spread speed is not corrected in the prior art.

This invention discloses a hydrogen- or ammonia-blended fuel jet fire experimental system, combustion diagnosis method, and equipment, which can solve problems such as experimental scale distortion, fragmented disaster chain process, and insufficient intelligent control. It realizes integrated simulation of the entire chain from leakage and vapor cloud diffusion to fire decay, and can obtain experimental data that matches real major accidents. It eliminates the data distortion and blind spots of segmented and isolated experiments, and reduces the control complexity and operational intensity of large-scale complex experiments.

The utility model discloses a cable shaft space fire experiment device which comprises a cable shaft experiment space. The cable shaft experiment space is provided with a vertical cable bridge used for laying a cable, a combustor used for igniting the cable, an image acquisition module used for acquiring an image when the cable burns, a temperature acquisition module used for acquiring the temperature nearby the cable and the combustor, and a flue gas analysis module used for analyzing flue gas components in the cable burning process. And the fire extinguishing module is used for extinguishing the cable. According to the utility model, the whole-process fire experiment of the cable shaft space under different parameters can be carried out, and the system can be applied to the fire-fighting scheme of the cable shaft space and the system design and solution of the fire experiment.

The application discloses a kind of flying deck aviation kerosene pool fire heat radiation prediction methods under the action of ambient wind, specifically comprising: S1, existing experimental data are collected;S2, flying deck aviation kerosene pool fire numerical simulation model is established;S3, numerical simulation data are output by numerical simulation model;S4, dimensionless processing and normalization processing are carried out to numerical simulation data;S5, neural network model is established using the data group after processing in step S4;S6, predict the heat radiation of flying deck aviation kerosene multi-scale pool fire under the action of ambient wind.The application overcomes the difficulty of obtaining aviation kerosene pool fire heat radiation sample data;Avoid aviation kerosene pool fire experiment and numerical simulation, reduce the prediction cost;Reduce the dimension of data set, improve the neural network training efficiency;Realize the multi-scale prediction of aviation kerosene pool fire heat radiation under the action of ambient wind, open up a new way for predicting aviation kerosene pool fire heat radiation.

The application provides a photovoltaic component fire experiment device and method under multiple loadings. The device comprises a mechanical load applying assembly and a thermal radiation load applying assembly. The mechanical load applying assembly comprises a clamping component for clamping a photovoltaic component and applying a force to the photovoltaic component, the photovoltaic component comprising a test surface for receiving thermal radiation, the test surface being divided into multiple regions; multiple sensors for detecting the heat flux density of the test surface in each of the multiple regions; the thermal radiation load applying assembly is arranged opposite to the test surface of the photovoltaic component, and comprises multiple thermal radiation units, any thermal radiation unit being used for thermal radiation to at least one region of the test surface; and multiple control units connected one-to-one with the multiple thermal radiation units, wherein any control unit is configured to adjust the power of the corresponding radiation unit according to the heat flux density of each of the multiple regions, so that the heat flux density of the multiple regions of the test surface is in a target state.

This invention provides a precise gas flow control system and method for multi-mode fire experiments, comprising: a host computer, an RS485 bus, and at least one mass flow controller; the host computer is communicatively connected to the mass flow controller via the RS485 bus; the host computer is equipped with control software written in Python; the host computer is used to calculate the target gas flow rate according to a preset fire growth model, perform closed-loop flow regulation on the mass flow controller through the feedforward-PID composite control algorithm, and preprocess the flow setpoint using cubic spline interpolation smoothing before sending it to the mass flow controller; the mass flow controller is used to adjust the gas output flow rate according to the received flow setpoint and provide real-time feedback of the actual flow rate value to the host computer; this invention uses general-purpose hardware and open-source software, is low-cost, highly scalable, and has an average absolute error of less than 1% in control accuracy, making it suitable for fire science experiments and teaching practice.

This invention discloses a multifunctional fire experiment platform with adjustable spatial dimensions, relating to the field of fire safety technology. It includes a base plate, side plates, a horizontal roller shutter assembly, a vertical roller shutter assembly, and a top plate assembly. Two side plates are positioned opposite each other on the left and right sides of the base plate. The horizontal and vertical roller shutter assemblies are positioned opposite each other on the front and rear sides of the base plate, respectively. The side plates, base plate, horizontal and vertical roller shutter assemblies form a cabin with an open top. The top plate assembly covers the opening of the cabin and moves up and down inside the cabin. One end of the horizontal roller shutter assembly is slidably connected to one of the side plates, while the other end extends freely towards the other side plate. The vertical roller shutter assemblies are slidably connected to both side plates, with the upper part fixed and the lower part extending freely towards the base plate. This multifunctional fire experiment platform overcomes the shortcomings of common experimental platforms, which often limit the research scenarios, and significantly reduces manpower and material costs.

The utility model belongs to the technical field of urban tunnel fire safety, and particularly relates to a distance-adjustable fire source device for studying tunnel double-fire-source fire combustion characteristics, which comprises a slideway arranged in a box body; the two sliding blocks are in sliding fit with the sliding ways through grooves formed in the bottoms, the sliding blocks are used for installing a fire source, and the sliding blocks are in limiting fit with the sliding ways; the fuel source is connected with the fire source and used for supplying fuel; the ignition part is mounted on the sliding block and is used for igniting a fire source; the temperature sensing part is installed on the sliding block and used for detecting the temperature of the fire source. Compared with an existing double-fire-source fire experiment device, the device can achieve temperature detection of double-fire-source fire at different angles, and through changes of the fire source distance and the fire source release rate, the degree, characteristics and evolution law of tunnel fire combustion under different double-fire-source conditions can be further studied.

1. Name of the product in this design: Calorimeter. 2. Purpose of this design: To measure the heat generated during fire experiments. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The present application relates to the technical field of fire safety, in particular to a small-scale ship engine room fire experiment platform and experiment method for different ventilation conditions; a ship cabin well is arranged in the middle of the top plate of the ship cabin, the ship cabin well and the ship cabin are through, and the upper end of the ship cabin well is a hinged end cover; a pair of air inlets are arranged in the front of the top plate, and a pair of air outlets are arranged in the rear of the top plate; the mechanical ventilation system comprises a blower and an exhaust fan, the blower is communicated with the pair of air inlets through a blower pipe, and the exhaust fan is communicated with the pair of air outlets through an exhaust pipe; when the blower and the exhaust fan are opened, the mechanical ventilation system is opened; when the blower and the exhaust fan are closed, the mechanical ventilation system is closed; when the upper end cover of the ship cabin well is opened, the natural ventilation is opened; when the upper end cover of the ship cabin well is closed, the natural ventilation is closed; therefore, the present application can study the fire behavior, smoke flow and smoke control mechanism in the small-scale engine room fire under different ventilation conditions.

This invention relates to the field of battery box technology, and proposes a fire-fighting experimental platform and system for charging stations with a liftable and replaceable experimental battery box. The system includes a top frame and a lifting base that drives the top frame to move up and down. The top frame is equipped with a clamping platform for receiving the replaced battery box. The clamping platform is equipped with a clamping device to control the clamping distance and an electric roller assembly to deliver the battery box out of the clamping platform. Below the top frame is a battery box replacement platform for placing the battery box to be installed. The replacement platform is elastically supported on the lifting base by elastic guides. Two sets of lifting components are provided on both sides of the replacement platform to lift it up when the top frame moves down. When the battery box to be installed on the replacement platform is lifted to the height of the clamping platform, this invention enables the alternating installation of old and new battery boxes, thereby improving replacement efficiency and providing a platform for fire-fighting battery box replacement experiments in charging stations. It also solves the problem of the cumbersome experimental demonstration process in existing technologies.

A kind of power battery system external fire experiment test device, comprising: main frame;Oil pan assembly, oil pan assembly is arranged in the inside of main frame;Waste liquid collection device, waste liquid collection device is arranged in the inside of main frame, waste liquid collection device is below oil pan assembly and is communicated with the bottom of oil pan assembly;Firebrick, firebrick is arranged in the inside of main frame and is located above oil pan assembly;Sample combustion rack, sample combustion rack is arranged in the inside of main frame and is located above firebrick;Heat reflecting cover, heat reflecting cover is arranged above main frame and is fixedly connected with main frame;Waste gas collection device, waste gas collection device is arranged above heat reflecting cover and is communicated with the top of heat reflecting cover.The power battery system external fire experiment test device of the utility model, it is reasonable in design, it solves the problems, such as serious energy waste, uneven heat radiation distribution, lack of integrated safety protection system and imperfect experimental waste gas treatment in prior art test device.

The invention relates to a folding exhaust fume collecting hood and a multi-stage spraying purification treatment system and method thereof, and relates to the technical field of fire experiment flue gas treatment and purification. Comprising a smoke collection device, a spraying purification device, an adsorption device, an exhaust device, a gas analysis sensing device and a purification system, the smoke collecting device communicates with a first guide pipe which communicates with a second guide pipe, and a spraying purification device is arranged at one end of the second guide pipe. An adsorption device is arranged at one end, far away from the spraying purification device, of the third guide pipe; an exhaust device is arranged at one end of the adsorption device away from the third conduit; the first guide pipe is provided with a gas analysis sensing device; the purification system adjusts purification parameters according to analysis parameters of the gas analysis sensing device; the purification system comprises a control subsystem, a container subsystem, a water circulation subsystem, a feeding subsystem and a pH detection subsystem. According to the invention, the flue gas can be efficiently and conveniently collected, analyzed and purified, and the pollution-free emission standard is reached.

The utility model provides a collaborative splicing type variable-parameter tunnel fire experiment device. The experiment device comprises a main body tunnel model (4) and a bifurcated tunnel model (5) which are arranged in a crossed manner, the side wall of the main body tunnel model is provided with a smoke exhaust channel (9) parallel to an internal channel of the main body tunnel; the main body tunnel model and the bifurcated tunnel model are combined bodies formed by sequentially splicing a plurality of detachable and spliced tunnel units; the side face, connected with the smoke exhaust channel, of each tunnel unit of the main body tunnel model is provided with a smoke exhaust port capable of adjusting parameters, and the upstream side of the main body tunnel and the two ends of the smoke exhaust channel are provided with axial flow fans. Different tunnel smoke exhaust mode scenes and smoke exhaust mode collaborative scenes required by the experiment are simulated through starting combination of the axial flow fans; according to the utility model, the free splicing of the tunnel main body, the synergistic effect of smoke exhaust modes and the free adjustment of the bifurcation angle and smoke exhaust port parameters of the bifurcation tunnel can be realized in an experiment.

The application discloses a real-time estimation method and system for the heat release rate of automobile fire based on an infrared temperature field, and belongs to the technical field of fire safety monitoring and computer vision.The application adopts a two-stage processing framework, first extracts the flame projection area and average temperature features by accurately segmenting the flame area from a 16-bit original infrared image through an improved Mask R-CNN model, and then constructs a double-parameter simplified physical model based on the heat transfer law to realize real-time estimation of the heat release rate after full-scale fire experiment calibration.The application takes into account the feature extraction capability of deep learning and the explainability of the physical model, can realize non-contact and high-precision monitoring of the heat release rate of automobile fire, effectively removes the heat background interference, and is suitable for early warning and intelligent fire-fighting linkage of automobile fire in limited spaces such as underground garages, tunnels and charging stations.

The application discloses a system for realizing hydrogen-doped natural gas jet fire experiment, which comprises a gas supply device, a mixing device, a jet combustion device, an observation device and a collection and control device. The gas supply device is used for sequentially conveying hydrogen and natural gas satisfying an experimental partial pressure to the mixing device according to a preset gas ratio and an experimental pressure containing partial pressure information. The mixing device is used for mixing hydrogen and natural gas according to the experimental pressure. The jet combustion device is used for jetting and igniting the hydrogen-doped natural gas to form a jet fire. The observation device is used for capturing the changing state of the jet fire. The collection and control device is used for analyzing the jet fire characteristics under the current experimental condition according to the changing state of the jet fire. The application can study the minimum ignition energy and the jet fire characteristics of the hydrogen-doped natural gas under different hydrogen-doping ratios, different pressures, different leakage hole appearances and impurity influences.

The utility model discloses a cable tunnel space fire experiment device, including cable tunnel experiment space, the cable tunnel experiment space is provided with the transverse cable bridge for placing cable, the burner for igniting cable, the image acquisition module for gathering the real -time image of cable combustion, the temperature acquisition module for gathering each temperature measuring point temperature data in cable tunnel experiment space, the flue gas analysis module for analyzing the flue gas condition when the fire happens in cable tunnel experiment space, the fire extinguishing module for extinguishing the fire in cable tunnel experiment space. The utility model can simulate the situation when the cable space breaks out the fire, and the temperature field characteristic and the danger and the fire extinguishing availability when the fire are experimented, and the reference and the basis are provided for the cable tunnel space fire control design, the fire prevention and the fire rescue.

A portable needle puncture trigger device for electric vehicles and a use method thereof belong to the technical field of fire experiment. The striker is positioned in the striker seat; the needle puncture trigger device is pushed to the bottom of the electric vehicle; the angle of the striker is adjusted to make the striker aim at the point position of the battery pack that needs to be punctured; the hydraulic lifting foot is extended to contact the ground by pressing the lifting switch down key; the hydraulic rod drives the striker to pierce into the battery pack by pressing the up key on the remote controller; the hydraulic rod drives the striker seat to separate from the striker by pressing the down key on the remote controller; the needle puncture part is continuously observed to see if there is smoke or fire phenomenon; when the fire at the bottom of the battery pack cannot be controlled, the hydraulic lifting foot is retracted from the ground by pressing the lifting switch up key; the four wheels contact the ground; the needle puncture trigger device is timely withdrawn from the scene through the cable; the camera continuously monitors the needle puncture process and stores the needle puncture process through the monitoring host; and the above steps achieve the purpose of triggering the thermal runaway of the electric vehicle through mechanical abuse and monitoring the phenomenon of the thermal runaway process.