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93 results about "Fire test" patented technology
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A fire test is a means of determining whether fire protection products meet minimum performance criteria as set out in a building code or other applicable legislation. Successful tests in laboratories holding national accreditation for testing and certification result in the issuance of a certification listing. The listing is public domain, whereas the test report itself is proprietary information belonging to the test sponsor.
Large-span bridge substructure vehicle-fire-wind real-time hybrid test platform and implementation method
The application provides a large-span bridge substructure vehicle-fire wind force real-time hybrid test platform and implementation method, the platform comprises a physical loading and transmission system, a T-shaped wind-fire coupling simulation system, a modularized prying integrated system, an intelligent control and calculation system and a multi-dimensional high-precision monitoring system. The method realizes real-time pre-test of the boundary displacement / force of the test piece through the construction of a numerical substructure fast calculation model based on LSTM and converts the boundary displacement / force into a loading instruction to drive the through core jack to realize thermal force coupling interactive loading; the T-shaped wind-fire coupling simulation system reproduces the real vehicle fire scene under the influence of the environmental wind. The test platform supports independent loading of any component of the cable system, can execute open space self-defined fire test and closed space standard fire test, and accurately analyzes the cable failure mode, critical temperature threshold and damage evolution law under fire through the multi-dimensional high-precision monitoring system, thereby providing a high-fidelity test platform and analysis method for fire resistance design of large-span bridges.
Owner:CHINA UNIV OF MINING & TECH +5
Compressed air foam fire extinguishing assessment method and system under influence of multiple environmental factors
PendingCN120337549ADesign optimisation/simulationSpecial data processing applicationsEnvironmental resource managementData set
The invention discloses a compressed air foam fire extinguishing assessment method and system under the influence of multiple environmental factors. The method comprises the following steps: collecting environmental parameters of an extra-high voltage station in a fire scene to form a fire environment parameter library; constructing a three-dimensional model of the extra-high voltage station, performing environmental parameter analogue simulation on the extra-high voltage station, and selecting a simulated nested physical model to simulate a fire scene to form a simulated extra-high voltage station; respectively simulating the influence of a single environment parameter and multiple environment parameters on the fire extinguishing performance index in the simulation extra-high voltage station, obtaining simulation data associated with the fire extinguishing performance index, and recording extra-high voltage station fire test data; constructing a data set by using the simulation data and the extra-high voltage station fire test data, performing data expansion to obtain a virtual sample, and using the virtual sample and the data set as a database; a fire extinguishing performance prediction model is constructed and trained, environmental parameters of the extra-high voltage station are collected in real time, and fire extinguishing performance indexes are predicted; the method has the advantages of being accurate in evaluation result, short in calculation time and sufficient in data sample.
Owner:STATE GRID ANHUI ELECTRIC POWER CO LTD ELECTRIC POWER SCI RES INST +2
A deep learning-based rapid non-destructive prediction method for the maximum temperature of a cable after fire
The application discloses a kind of based on deep learning's cable over fire maximum temperature fast nondestructive prediction method, it is related to bridge post-fire safety evaluation technical field.The method obtains the apparent image data of cable anticorrosion-fire protection system at different temperatures by various fire tests, and constructs special data set after shunt pretreatment;Innovatively, a double-branch weight sharing prediction model based on ConvNeXt-Tiny is constructed, the state characteristics of cable flame-retardant sealant layer and anticorrosion layer are extracted by two parallel branches respectively, deep representation learning is carried out by feature fusion and shared backbone network, and finally high-precision parallel prediction of double temperature parameters is realized by two ordered classification prediction heads;Using transfer learning strategy and hybrid loss function for training, the prediction accuracy and generalization ability are significantly improved;Finally, a visual window is developed to realize the fast nondestructive evaluation of cable over fire temperature without disassembly and sensor.The method provides reliable technical support for post-fire safety performance evaluation of bridge cable.
Owner:CHINA UNIV OF MINING & TECH +3
Fireproof testing device for fireproof and smoke-proof safety door
The utility model discloses a fireproof and smoke-proof safety door fireproof test device, comprising a fireproof detection furnace, the fireproof detection furnace comprises a combustion furnace, a sealing plate and a mounting hole, the sealing plate is movably connected to the side edge of the combustion furnace, and the mounting hole is arranged in the middle of the sealing plate; the anti-damage assembly comprises four supporting columns, first transverse rods, second transverse rods, an electric push rod, hoops and bolts, one supporting column is hinged to the side edge of the sealing plate, the first transverse rods and the second transverse rods are welded between the supporting columns, the bolts are connected between the two second transverse rods in an inserted mode, the electric push rod is fixed to one ends of the bolts, and the hoops are fixed to the other ends of the electric push rod. And the hoop sleeves the fixed end of the electric push rod. The utility model relates to a fireproof door, and aims to solve the problems that an existing back fire thermocouple is adhered to the back surface of a test door body, on one hand, the viscosity is influenced and the back fire thermocouple falls off after combustion for a period of time, and on the other hand, once a fireproof door is burnt through, flames and high-temperature gas directly act on the thermocouple and a cable thereof and the performance of the thermocouple is damaged.
Owner:FIRE PROD CONFORMITY ASSESSMENT CENT OF THE MINISTRY OF EMERGENCY MANAGEMENT
A low-pressure fire test system and method for forest and pasture areas
ActiveCN116520085BTesting dielectric strengthCurrent/voltage measurementPhase currentsAgricultural engineering
The present application relates to the technical field of electrical safety, and more particularly to a low-voltage fire test system and method for forestry and animal husbandry areas, comprising a low-voltage power distribution cabinet, a power supply system, a wave recording system and a fault simulation area; the fault simulation area is used for simulating the fault of overhead lines with different diameters or insulation characteristics in various types of overhead line fault simulation tests according to pre-set test conditions; the power supply system is used for outputting alternating current with three-phase voltage when simulating different types of overhead line faults; the low-voltage power distribution cabinet is used for detecting the three-phase voltage of the bus and the three-phase current of the outgoing line under different overhead line fault types, so that the wave recording system detects whether there is arc breakdown and obtains corresponding fault simulation information. The present application can effectively analyze the short-circuit arc condition in the fault process by testing various fault types of overhead transmission lines and plant combustion, thereby reducing the probability of fire caused by power distribution network faults in forestry and animal husbandry areas.
Owner:GUANGDONG POWER GRID CO LTD +1
Prediction method for prestress loss of steel cable in whole fire process
PendingCN121211815AGeometric CADDesign optimisation/simulationBridge engineeringFinite element software
The invention discloses a method for predicting the prestress loss of a steel cable in the whole fire process, and belongs to the technical field of bridge engineering. The method comprises the steps that a finite element heat transfer analysis model of the steel cable is established based on ABAQUS finite element software, and a finite element thermal coupling analysis model of the corresponding steel cable is established; and loading the heat transfer analysis result of the steel cable as a pre-stress field into a thermal-mechanical coupling analysis model, and simulating to obtain the pre-stress loss evolution condition of the steel cable in the whole fire process. According to the method, the prestress loss of the steel cable in the whole fire process is analyzed through numerical simulation, and compared with a traditional fire test method, the research cost is greatly reduced, and the analysis efficiency is remarkably improved; the prediction method provided by the invention can be directly applied to engineering practice, provides a scientific basis for evaluating the stress state of the steel cable structure after the fire, has an important reference value for guiding the formulation of a post-disaster repair scheme, and is beneficial to improving the fire-resistant safety performance of an engineering structure.
Owner:CHINA UNIV OF MINING & TECH
Dynamic temperature control fire test method for large-scale substructure of cable system bridge
The invention discloses a cable system bridge large-scale substructure dynamic temperature control fire test method, relates to the technical field of bridge structure fire resistance test, and aims to generate an open space non-uniform temperature field through fire dynamics simulation software to reproduce a real vehicle fire scene. A modular fireproof fence is additionally arranged to construct a closed space, and a standard fire heating curve test is carried out. An LSTM-PID intelligent control system is adopted to drive a self-balancing loading reaction frame to apply load according to a preset graded loading system, and dynamic reproduction of a three-dimensional wind-fire-force coupling scene is achieved. The test is suitable for a main cable and a sling of a suspension bridge, a stay cable of a cable-stayed bridge and a suspender of a suspender arch bridge, an armored thermocouple array, a fiber grating sensor and a strain gauge group are arranged on the surface of a large-scale or full-scale component, stress, displacement and temperature data are collected in real time, an instruction error is dynamically corrected in combination with an LSTM time-delay compensation algorithm, and the test accuracy is improved. And second-level synchronization of loading and fire scene regulation and control is ensured.
Owner:CHINA UNIV OF MINING & TECH +5
Fireproof test device equipped with fire extinguishing structure
ActiveCN223244492UChemical analysis using combustionFire rescueEnvironmental resource managementFire test
The utility model provides a fire-proof test device equipped with a fire extinguishing structure, which comprises a fire-proof test box, a dispersing assembly and a fire extinguishing assembly, the upper end of the fire-proof test box is provided with the dispersing assembly for dispersing materials, and the upper side of the fire-proof test box is internally provided with the fire extinguishing assembly. Compared with the prior art, the fire extinguishing device has the following beneficial effects that by arranging the dispersing assembly, rotating fan blades can disperse fine sand thrown by the fire extinguishing assembly, so that large-area burning objects can be quickly extinguished, and the problem that fire extinguishing is incomplete due to the fact that part of objects are not covered due to concentrated falling of the fine sand is avoided; the fire extinguishing effect of the fire extinguishing assembly is greatly improved, the fire extinguishing assembly is arranged, fine sand is adopted as a test fire extinguishing agent, after one-time fire extinguishing is completed, the fine sand can be recycled through alignment of the installed test bed, the fine sand can be repeatedly used, the test cost is greatly saved, and environmental pollution caused by frequent tests is avoided.
Owner:山东悦龙橡塑科技股份有限公司
Power battery external burning test system and method
The invention discloses a power battery external burning test system and method. The power battery external fire test system comprises a test execution unit used for executing a power battery system external fire test, and the test execution unit comprises a water tank internally used for storing water for fire extinguishing and a test platform arranged in the water tank, controlled to ascend and descend and used for carrying a tested power battery. After the test platform descends to a preset position, the power battery on the test platform can be immersed into water; the cover box is matched with the test platform and used for covering the power battery in the test, a water mist fire extinguishing device used for extinguishing after the test is ended is mounted on the cover box, the combustion module is used for burning the outside of the power battery after ignition, and the ignition device is used for igniting the combustion module. Compared with an existing external fire test system, the device is more suitable for the combustion working condition when the whole vehicle is on fire, and the test result has higher reference value.
Owner:中汽新能(天津)电池科技有限公司
Fire response prediction method for reinforced concrete columns based on thermal boundary distortion similarity
The application discloses a reinforced concrete column fire response prediction method based on thermal boundary distortion similarity, and relates to the technical field of civil engineering structure fire resistance. In view of the problem that the existing scale model fire test needs to strictly meet the complete similarity of the thermal boundary, and the temperature rising rate of the model temperature curve is too high to be implemented in the test furnace, the distortion coefficient is introduced in the calculation of the scale model temperature field, the high-temperature real-time load ratio is taken as a unified mechanical response index, and the response mapping relationship between the prototype and the model is constructed. The distortion coefficient is determined through iterative calculation to make the high-temperature real-time load ratio prediction coefficient meet the preset error range, and the distortion coefficient is used to realize accurate prediction of the prototype fire response. The application does not pursue the complete similarity of the prototype and the model temperature field, but realizes equivalent mapping of the prototype and the model at the high-temperature mechanical response level by introducing the distortion coefficient, thereby significantly improving the engineering implementability of the scale model fire test and reducing the test cost.
Owner:SOUTH CHINA UNIV OF TECH +1
Fireproof brick wall shelf
The utility model discloses a fireproof brick wall shelf, which belongs to the technical field of constructional engineering and comprises a wall body built by a plurality of concrete blocks, a longitudinal reinforcing plate and a transverse reinforcing plate are arranged in the wall body, the upper end and the lower end of the longitudinal reinforcing plate are respectively connected with a top connector and a bottom connector, and the outer side of the transverse reinforcing plate is connected with an outer side connector. The inner side of the wall body is connected with an inner side connector and is connected with a longitudinal reinforcing plate through the inner side connector, the longitudinal reinforcing plate is further provided with an inner side wall pull rod, and the outer side of the wall body is further provided with an outer side wall pull rod. According to the structure, the purpose of reducing material cost and weight is achieved, all the parts can be installed on a construction site and connected with the adjacent concrete blocks respectively, the whole process does not need additional equipment assistance, and therefore construction cost and difficulty are reduced, construction efficiency is improved, safety accidents can be reduced, and in addition, the construction quality is improved. And the whole fireproof brick wall shelf can be subjected to a fireproof test, and can meet the fireproof requirement of 4 hours at most and the STC50 sound insulation requirement.
Owner:林太魁
Fireproof testing device for insulation board production
The utility model discloses a fireproof testing device for heat insulation board production, relates to the technical field of fireproof testing of heat insulation boards, and aims to solve the problems that an existing fireproof testing device for heat insulation board production is affected by a clamping assembly in the testing process, the two sides of a heat insulation board are heated unevenly, and detection data are affected. According to the utility model, the direct contact area between the clamping assembly and the insulation board is reduced as much as possible, so that the influence of the clamping plate on the test is reduced, and in the test process, the insulation board clamping assembly can drive the insulation board to turn over in the switch assembly, so that different surfaces of the insulation board are baked, and the condition that the insulation board is heated in multiple directions in a real fire can be simulated; the fireproof performance of the insulation board in an actual fire scene can be reflected more accurately, evaluation one-sidedness caused by single-side testing is avoided, a scientific basis can be better provided for building design, fire engineering and the like, and reasonable application of the insulation board in different places and environments is guided.
Owner:INNER MONGOLIA NORTH TIMES DESIGN & RES INST CO LTD
Devices and methods for fire protection and heat shielding of filter bowls
A fire and protection system designed to provide fire protection / heat shielding for fuel filter clear bowls to pass a fire test as required by ABYC standards. The fire and protection system comprises a backplate and a clear fuel filter bowl shield.
Owner:OHNOH2O LLC
Integrated device for gas cylinder burning test
ActiveCN223217458UChemical analysis using combustionClosed circuit television systemsVideo monitoringCombustor
The utility model discloses an integrated device for a gas cylinder burning test, which comprises an integrated mounting frame body, openings are arranged on the front, rear, left and right sides and the top of the integrated mounting frame body, a front baffle and a rear baffle are arranged in the openings on the front and rear sides, and a left baffle and a right baffle are arranged in the openings on the left and right sides. A top front baffle and a top rear baffle are installed on the front side and the rear side of the top opening, air inlet grooves are formed between the bottoms of the front baffle, the rear baffle, the left baffle and the right baffle and the top face of the bottom of the integrated installation frame, a supporting fire frame is further installed at the bottom of the inner side of the integrated installation frame, and a plurality of combustors are installed in the supporting fire frame. And a data acquisition system, a video monitoring system and a high-pressure pipeline system are also mounted in the integrated mounting frame. According to the invention, the working efficiency of long-term and multi-batch gas cylinder burning tests can be improved, the data acquisition consistency of the long-term and multi-batch burning tests can be improved, and the efficiency of carrying out the gas cylinder burning tests in the field can be improved.
Owner:CHONGQING TONGOU QUALITY INSPECTION TECH SERVICE CO LTD
A scaled-down fire test platform for dispersed exhaust tunnels and a smoke exhaust efficiency calculation method
This invention belongs to the research field of tunnel fire smoke control and proposes a decentralized exhaust tunnel scaled-down fire test platform and a smoke exhaust efficiency calculation method. The test platform's shaft height is adjustable, the shaft length can be continuously varied, the shaft smoke exhaust efficiency can be measured in real time, and the optimal shaft size and longitudinal wind speed can be determined. Through testing, the smoke exhaust efficiency and smoke spread distance under different shaft sizes and longitudinal wind speeds can be measured and analyzed, and the shaft size and longitudinal wind speed for optimal smoke exhaust performance can be determined. This invention can provide guidance for the ventilation and smoke exhaust design of tunnels with natural shaft smoke exhaust and tunnels that combine shaft and longitudinal ventilation for smoke exhaust.
Owner:CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP CO LTD +1
Multi-angle movable fireproof material testing device and testing method thereof
PendingCN121347268AChemical analysis using combustionMaterial strength using tensile/compressive forcesFire testMaterials testing
Owner:HENTONG CNR (SHANGHAI) RAIL TRANSIT VEHICLE MAINTENANCE CO
Intelligent fire identification method and device for super high-rise building, and inspection robot
The invention provides an intelligent fire identification method for a super high-rise building, and the method comprises the steps: selecting different floors of the super high-rise building, setting a plurality of monitoring points, deploying a floor monitoring platform at each floor, setting an upper-level monitoring platform at a whole building or region level, and building a hierarchical real-time data transmission link; fire scene parameter data of each monitoring point are collected through an entity fire test and uploaded to the upper-level monitoring platform; and constructing a fire identification model and deploying the fire identification model at the upper-level monitoring platform, wherein the input parameters of the fire identification model include temperature and floor height, and the output parameters are fire identification results of different floor heights. According to the method, the accuracy and real-time performance of fire early warning of the super high-rise building can be effectively improved.
Owner:CHINA IPPR INT ENG CO LTD
Burning test system for hydrogen storage cylinder
The invention discloses a hydrogen storage cylinder burning test system, which relates to the technical field of burning test equipment, and comprises a burning test device, a sensor assembly, a fuel supply system, a safe discharge system and a data acquisition system, the burning test testing device comprises an annular coaming, a base and a plurality of flame ejection assemblies. A through channel is formed in the annular coaming; the flame ejection assembly is provided with multi-angle flame nozzles corresponding to the front end, the middle part and the rear end of the hydrogen storage cylinder to be detected; the sensor assembly comprises an in-bottle pressure sensor and an in-bottle temperature sensor; the fuel supply system communicates with the flame ejection assemblies; the safe discharge system is used for safely discharging gas in the burning process of the hydrogen storage cylinder to be tested; and the data acquisition system is in communication connection with the in-bottle pressure sensor, the in-bottle temperature sensor, the fuel supply system and the safe discharge system. Various types of burning tests on the hydrogen storage cylinder can be realized, and data closer to actual burning tests can be obtained.
Owner:HEFEI UNIV OF TECH
Fire test piece surface heat flux density acquisition device, system and method
This invention relates to the field of aircraft fire resistance testing technology, and discloses a device, system, and method for acquiring the surface heat flux density of a fire-resistant test specimen. The system initialization includes: total heat flux measurement (obtaining the theoretical total heat flux value q0); actual pure radiative heat measurement (setting a glass cover around the heat flux sensor without changing its position, shielding convective heat through the glass cover, and then collecting the theoretical radiative heat flux value q1 measured by the heat flux sensor); and multiplying the pre-measured emissivity of the test specimen surface by the theoretical radiative heat flux value q1 to obtain the actual pure radiative heat flux value q. r Actual heat flux calculation: Actual convective heat value q c The actual heat flux q is obtained by subtracting the theoretical radiative heat flux q1 from the theoretical heat flux q0. a Equal to the actual pure radiative heat flux value q r and actual convective heat value q c The sum of radiative heat and convective heat is achieved through precise measurement of these two heat sources under actual aircraft fire conditions, providing high-fidelity, multi-scenario, and highly consistent thermal flow data for twin experiments.
Owner:THE SECOND RES INST OF CIVIL AVIATION ADMINISTRATION OF CHINA +2
Forest-town junction area building external fire test device and test method
The invention provides a forest-town junction area building external fire test device and test method.The forest-town junction area building external fire test device comprises a combustion system, an air blowing system, an ignition system, a water collection system, a measurement system and a data acquisition system, and the air blowing system, the ignition system, the water collection system, the measurement system and the data acquisition system are arranged on one side of the combustion system; the ignition system is used for ensuring ignition conditions, the water collecting system is located below the combustion system and used for collecting water, and the measuring system is used for measuring temperature, heat radiation and size; the fire extinguishing system is further installed on the combustion system and used for testing the fire extinguishing efficiency, and the data acquisition system is in signal connection with the air blowing system, the fire extinguishing system and the measuring system. According to the forest-town junction area building external fire test device and test method, spraying cooling can be carried out on the exterior of a building facility, it is ensured that combustible materials related to the building external facility can not be ignited within a certain time, and the purpose of cooling protection on the fire is achieved.
Owner:TIANJIN FIRE SCI & TECH RES INST OF MEM
Performance test equipment for fireproof wire production
A performance test device for fireproof wire production disclosed by the present invention comprises a detection box body and a power box body, a water spraying pipe and a fire spraying pipe are installed on a moving frame, a wire capable of adjusting tightness is installed in the detection box body, and a device for conveying clear water of different temperatures to the water spraying pipe is installed in the power box body. The water spraying pipe sprays clean water at different temperatures to the electric wire to simulate different environments for the electric wire, meanwhile, the electric wire is intermittently in a tensioning and loosening state to simulate the state of the electric wire in actual use, and fire spraying of the fire spraying pipe can perform fireproof testing on the electric wire in different environments and states. According to the invention, the actual installation state of the fireproof wire and the actual use conditions in different environments can be simulated, fire resistance detection is carried out on the environment and the wire in the state, and whether the fire resistance of the wire is influenced by the environment can be known, so that the long-term use performance of the wire can be accurately evaluated.
Owner:HUASHAN CABLE CO LTD
Machine learning techniques for predicting outcomes of cable fire tests
Systems and methods are described for predicting outcomes of a product test using a machine learning model. According to certain aspects, an electronic device may calculate a first result that predicts a result of a product tested according to a large scale product test based on a received small scale result set as a first input to a first machine learning model of a plurality of machine learning models. The electronic device may then calculate a second result based on a small scale result set as a second input to at least one second machine learning model of the plurality of machine learning models, the second result predicting a result of the product tested according to the large scale product test. The electronic device may then predict a result of the mass product test based at least on the first result and the second result.
Owner:UL LLC
Material fire resistance testing system
The application discloses a material fire resistance performance testing system, which comprises a mounting seat, a fire source device and a control device. The mounting seat is formed with a mounting surface for mounting a to-be-detected piece. The fire source device comprises a driving mechanism and a fire source piece connected with the driving mechanism. The driving mechanism is used for driving the fire source piece to approach or move away from the to-be-detected piece. The control device comprises a temperature detector and a controller. The temperature detector is used for detecting the surface temperature of the to-be-detected piece. The controller is used for controlling the driving mechanism to adjust the position of the fire source piece according to the surface temperature, so that the temperature rise change of the to-be-detected piece in the test process is similar to the actual temperature rise change in a fire. Compared with a traditional fire test furnace, the material fire resistance performance testing system provided by the application cancels the furnace body, directly heats the to-be-detected piece by the fire source piece, and simulates the temperature environment in a fire through distance adjustment, thereby avoiding fuel waste.
Owner:STATE GRID HUNAN ELECTRIC POWER COMPANY LIMITED +3
Simplified calculation method and device for building large space smoke movement model
The application discloses a simplified calculation method of a building large-space smoke movement model, which comprises the following steps: analyzing the geometric space form of a large space, determining the corresponding building large-space category, wherein the category comprises a flat large space and a high large space; according to the building functions of different large spaces, combining relevant fireproof design specifications or adopting a site fire test method to determine the fire source power value in the space; according to different building large-space categories, measuring the temperature of the large space and calculating and determining the corresponding temperature gradient; according to the obtained large-space temperature and the fire source power value, calculating and determining the heat buoyancy flux of the fire source; combining the obtained known environmental conditions, calculating and determining the space distribution characteristics and amplitude of physical parameters such as the smoke speed, temperature rise and movement radius, and used for early detection of a large-space fire and smoke exhaust design.
Owner:TONGJI UNIV
Ground hot test run assessment method for space orbit control engine
The invention provides a ground hot test run checking method for a space orbit control engine, which is used for checking whether a product can reliably complete in-orbit flight or not, and is characterized by comprising the following steps of: 1, formulating an acceptance hot test run program and working conditions; 2, carrying out product acceptance hot test run; step 3, selecting a casual inspection hot test run product; 4, formulating a hot test run program and working conditions of the identification-grade service life assessment; step 5, carrying out identification-level service life examination hot test run on the casual inspection product; and step 6, evaluating whether the product passes the assessment. The method provided by the invention aims to identify the defects of the orbit control engine in advance through hot test run assessment, assess the adaptability of a product to a flight mission profile, and ensure that the long-life space orbit control engine works reliably in orbit.
Owner:SHANGHAI INST OF SPACE PROPULSION
Integrated Rocket Structure Testing and Launch
The invention of the rocket structure test and launch has made a great contribution to the field of aerospace technology; especially in sounding rockets, it has three basic functions: the rocket's cold flow (cold flow 168; hot-fire test) and launch stages are integrated into a single structure. In addition, it is used to move the rocket from one place to another by attaching the launcher, which makes it different from other rocket launchers.
Owner:SPACE SCI & GEOSPATIAL INST +1
Container fire experiment device
The utility model relates to the technical field of fire experiment, and discloses a container fire experiment device which comprises a container body. The fire generation unit is arranged in the container body, and a fire source is suitable for being placed on the fire generation unit; the temperature detection unit is movably arranged in the container body, and the temperature detection unit is suitable for detecting the temperature of different positions in the container body. On the basis of the container body, a scene close to reality is created for experiments, the fire generation unit arranged in the container body is located in the container body, the fire generation source in the container can be accurately simulated by placing a fire source and controlling parameters such as the type and strength of the fire source, and possibility is provided for researching fire development under different conditions. And the movably arranged temperature detection units can be flexibly arranged at different positions in the container body, so that the temperature change at each position can be effectively detected.
Owner:SHENZHEN URBAN PUBLIC SAFETY & TECH INST CO LTD
System for testing ignition of fuel liquid drops on high-temperature hot surface
The utility model discloses a system for testing ignition of fuel liquid drops on a high-temperature hot surface, and belongs to the field of combustion science. A system for testing ignition of fuel liquid drops on a high-temperature hot surface comprises a working box and an injection pump fixedly connected to the top of the working box, the output end of the injection pump is connected with a discharging pipe through an injector, and the discharging pipe extends into a cavity of the working box and is provided with a control valve; the platform is connected to the interior of the cavity of the working box in a lifting mode, a heating table is arranged on the platform, and the discharging end of the discharging pipe faces the top of the heating table; according to the utility model, the high-speed camera can be used for recording the phenomenon that liquid drops drop on a high-temperature hot surface in real time, and then the infrared thermal imager is used for recording the temperature of the hot surface and the flame combustion distribution condition in real time, so that the hot ignition process is realized, the experiment can be repeated, and the ignition probabilities of different fuels are allowed to be quantitatively analyzed; the accuracy of ignition characteristics is improved, and liquid drops can drop from different heights so as to explore the fire phenomenon at different impact rates.
Owner:CIVIL AVIATION FLIGHT UNIV OF CHINA
Titanium fire test device capable of achieving positioning ignition and test method
The invention provides a titanium fire test device capable of achieving positioning ignition and a test method. The titanium fire test device capable of performing positioning ignition is used for performing titanium burning verification on a test blade and comprises a gas source, a frame body, an igniter and a positioning ignition structure, wherein the frame body is enclosed to form a flow channel, and the test blade is arranged in the flow channel; the air source is connected with the frame body, and the air source is used for providing test airflow capable of flowing in the flow channel; the igniter is arranged on the positioning ignition structure and is used for igniting the test blade; the frame body is provided with a positioning part communicated with the flow channel, and the positioning ignition structure is matched with the positioning part, so that the positioning ignition structure can move along at least one direction, and the ignition position of the igniter on the test blade is further changed. The titanium fire test device can position the ignition position.
Owner:AECC COMML AIRCRAFT ENGINE CO LTD
Ground thermal test method for space orbit control engine
This invention provides a ground hot-fire test method for space orbital control engines, used to assess whether the product can reliably complete on-orbit flight. The method comprises the following steps: Step 1, developing acceptance hot-fire test procedures and operating conditions; Step 2, conducting product acceptance hot-fire tests; Step 3, selecting products for random hot-fire test inspection; Step 4, developing qualification-level life assessment hot-fire test procedures and operating conditions; Step 5, conducting qualification-level life assessment hot-fire tests on randomly selected products; Step 6, evaluating whether the product passes the assessment. The method provided by this invention aims to identify orbital control engine defects in advance through hot-fire test inspections, assess the product's adaptability to flight mission profiles, and ensure the reliable on-orbit operation of long-life space orbital control engines.
Owner:SHANGHAI INST OF SPACE PROPULSION