10 results about "Fire test" patented technology

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.

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.

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.

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.

The present invention relates to a battery test device configured to perform various types of tests, such as a compression test, a drop test, a penetration test, a fire test, and a collision test, guarantee a stable battery test, and prevent the spread of a fire.

This invention provides a low-pressure environment bifurcation tunnel mobile fire source testing system, comprising: a moving slider simulating the movement of a real vehicle within the main tunnel and / or ramps of a bifurcation tunnel to change the fire source location in real time; a pressure sensor detecting the chamber pressure of the combustion chamber in real time, and controlling the chamber pressure by a gas control chamber when there is a difference between the chamber pressure and the target pressure; a purification system controlling the gas concentrations of carbon monoxide and carbon dioxide within the combustion chamber; a data acquisition system collecting flame parameters, smoke parameters, environmental parameters, and temperature parameters; a processor controlling the moving slider to move within the bifurcation tunnel at the start of the test and acquiring the parameters collected by the data acquisition system; and generating an evaluation report of the test process based on the collected parameters at the end of the test. Applying this system allows for testing in a simulated low-pressure environment, and the evaluation report obtained from the test provides data support for fire prevention in low-pressure bifurcation tunnel environments.

The application discloses a multi-type tunnel fire scale test platform with adjustable width, length and large slope, and belongs to the technical field of tunnel fire test equipment, and comprises an inclination adjusting mechanism, wherein the inclination adjusting mechanism comprises a base, the top of the base is respectively provided with an angle adjusting part and a width adjusting part, the top surfaces of the angle adjusting part and the width adjusting part are symmetrically provided with telescopic supports, one side of the telescopic supports close to the angle adjusting part is provided with a protractor, a plurality of modular box bodies are installed on the telescopic supports and are sequentially communicated, and the bottom surfaces of the modular box bodies are provided with moving fixing mechanisms. Through the cooperative design of the angle adjusting part, the width adjusting part and the integrated moving fixing mechanism, the stability of structure adjustment and test operation under the condition of large slope is guaranteed, and the problems of the inconvenience of fixing, moving and reconstruction of the overall structure of the traditional tunnel fire test device are effectively solved.

This invention, in embodiments, relates to a roll comprising a roofing material. The roofing material includes a substrate having a first side and a second side, and a film layer attached to at least one of the first side or the second side of the substrate, the film layer comprising a polymer and having a thickness of 0.5 mils to 100 mils. A single layer of the roofing material achieves a Class A rating for steep slope roofing systems when tested according to UL 790 and / or ASTM E-108 Standard Test Methods for Fire Tests of Roof Coverings. This invention, in embodiments, further relates to a roofing material and a steep slope roofing system.

The application discloses an aerogel thermal stability test system and a test method thereof, and belongs to the technical field of aerogel testing. The system comprises a test table and a control seat. An insulation groove for testing the thermal stability of aerogel is arranged at the top of the test table. A heating seat is fixedly connected to the inner side wall of the insulation groove. A test frame is connected to the top of the heating seat through a heat conduction plate. The piston plate is used to drive the oxygen supply through the downward pressing action, so that the mechanical pressure and the flame combustion are coupled in the physical mechanism. Not only the additional control gas circuit is saved, but also the real physical process of "pressure leading to structural deformation, and then affecting the flame impact effect" is simulated. The fire test under dynamic pressure is realized. The key working condition which is difficult to simulate in static or step-by-step test is realized. The protective performance of the material in the extreme dynamic event can be more truly evaluated.

The utility model provides a kind of sampling assembly and battery pack, the sampling assembly includes support, busbar and flexible circuit board;Wherein, the busbar is set in the support, the support is equipped with connecting portion, and the connecting portion is used to be connected with battery management system;The flexible circuit board includes circuit board ontology, and the circuit board ontology has first bending part and second bending part, the first bending part is bent to the direction of busbar, the first bending part is electrically connected with the busbar, the second bending part is bent to the direction of connecting portion, and the second bending part is used to be electrically connected with the battery management system.In the application, flexible circuit board with foldable is connected with busbar, signal acquisition and transmission are carried out, flexible circuit board has better high-temperature resistance and short-circuit prevention, has good working performance in large-scale fire test, and can meet the thermal runaway test requirements of product.