5 results about "Fire performance" patented technology

The utility model discloses a kind of fire-resistant cables under building fire temperature condition, including cable core, the outside of cable core is covered with porous ceramic support, the outside of porous ceramic support is equipped with multilayer composite fireproof layer, the outside of multilayer composite fireproof layer is equipped with heat-absorbing gasket layer, the outside of heat-absorbing gasket layer is evenly distributed with groove along circumference, the outside of heat-absorbing gasket layer is equipped with metal armoring layer, the inside of metal armoring layer is arranged and extends to the extension body inside groove, the inside of groove is filled with heat-absorbing composite filler;The outer surface of metal armoring layer is equipped with low-smoke halogen-free sheath;The utility model can adapt to the environment of closed, high temperature, with external impact inside building facility, improve the high-temperature-resistant fire performance and impact resistance of cable, effectively prolong the normal working time of cable in high temperature, with external impact environment.

The utility model relates to the technical field of building detection, in particular to a ground misfire performance detection device. The device comprises a box body, a convex edge, a bottom plate, a clamping mechanism and an inner supporting cylinder, a grinding wheel is movably arranged in the box body, and a limiting hole is formed in the side wall of the box body; the two protruding edges are connected to the two opposite side walls in the opening respectively, the width of the protruding edges is larger than that of the opening, and sliding grooves with the length larger than that of the opening are formed in the protruding edges. The bottom plate is provided with a sliding shaft and a limiting block, the bottom plate is in rotatable sliding fit with the sliding groove through the sliding shaft, and when the bottom plate slides, the opening can be blocked, and the limiting block is matched with the limiting hole to limit rotation of the bottom plate; the clamping mechanism is connected with the bottom plate and located in the clamping groove. The inner supporting cylinder is in sliding connection with the box body, the inner supporting cylinder can be controlled to slide so that the end of the inner supporting cylinder can penetrate through the opening to be located outside the box body, and the grinding wheel is located in the inner supporting cylinder. The structure does not need to be split, and use is more convenient.

This invention discloses an automatic sprinkler fire extinguishing and protective cooling system testing device and method: The equipment space includes a water tank, a water pump control cabinet, and a water pump. A glass partition structure specimen is installed on at least one side of the test space. The device includes a fire source model simulating a fire, a temperature acquisition module for collecting temperature data within the test space and on the surface of the glass partition structure specimen, an image acquisition module for collecting real-time combustion images within the test space, a radiant heat acquisition module for measuring radiant heat at different distances from the glass partition structure specimen outside the test space, a smoke analysis module for collecting smoke composition data within the test space, a fire extinguishing module for spraying fire from the fire source model, a protective cooling module for spraying and cooling the glass partition structure specimen, and a smoke exhaust module for discharging smoke. This invention can conduct fire performance tests on glass partition structure specimens of different sizes and indoor space fire extinguishing tests, providing a basis for fire protection design, fire prevention, and fire rescue in indoor spaces using various types of glass as fire-resistant partitions.

The application relates to a method for testing a fire performance index of low-smoke halogen-free material and relates to the field of evaluation and testing of low-smoke halogen-free material. According to the fitting of the flame-retardant performance index FRPI and the fire performance index FPI of different standard samples, a linear relationship FRPI-FPI can be obtained, so that only the flame-retardant performance index FRPI of a sample to be tested needs to be obtained, the fire performance index FPI of the sample to be tested can be calculated according to the obtained linear relationship FRPI-FPI, and the evaluation of the flame-retardant performance of the sample to be tested can be realized. The method provided by the application can accurately test the fire performance index of low-smoke halogen-free material by using only a differential scanning calorimeter, the testing process is simplified under the premise of ensuring the testing precision, the testing threshold is reduced, the flame-retardant performance of low-smoke halogen-free material is more conveniently and quickly evaluated, no open flame appears in the whole testing process, the safety coefficient is high, and the method is environment-friendly.

The utility model relates to the technical field of assembly type buildings, and discloses an assembly type color steel plate gypsum board composite suspended ceiling which comprises two assembly type wallboards and is characterized in that two color steel plates are installed on the tops of the two assembly type wallboards, U-shaped clamping grooves are formed in the opposite sides of the two color steel plates, and the U-shaped clamping grooves are connected with the two assembly type wallboards. The two U-shaped clamping grooves correspond to the two assembly type wallboards, and XPS waterproof buffering rubber strips are installed between the two U-shaped clamping grooves and the two assembly type wallboards. Through the design of the bent buckling edge and the self-locking lap joint, a keel does not need to be used, the installation process is greatly simplified, the process of a single person is reduced by 30%, the installation efficiency is effectively improved, and the labor cost is reduced; meanwhile, the cost is reduced by 40%, the overall manufacturing cost is remarkably reduced on the premise that the quality of the suspended ceiling is guaranteed, and in the aspect of bearing, a composite bearing structure and a color steel plate are adopted to bear main loads, and a gypsum board is adopted to disperse stress, so that the deflection of a system is reduced, the stability and durability of the suspended ceiling are enhanced, and the fireproof performance is upgraded.