7results about How to "Prolong ignition time" patented technology

The invention discloses a flame-retardant board and a preparation method thereof, and relates to the technical field of composite boards. The flame-retardant plate is prepared from the following raw materials: collagen fiber powder and a plate material, the collagenous fiber powder is prepared from the following raw materials: collagenous fibers, protease and a metal salt tanning agent. The preparation method comprises the steps of protease treatment, metal salt treatment, collagen fiber powder preparation and plate preparation. The ignition time of a product plate can be effectively prolonged, so that the flame-retardant effect is exerted, and longer window time is provided to prevent, stop and delay the occurrence of a fire; and when a fire occurs, longer fire extinguishing, rescue and escape time can be provided.

The utility model provides a tubular heating furnace burner assembly with an automatic ignition function, which comprises a main control panel and a plurality of groups of burners, the main control panel is provided with a plurality of groups of burner control and display components, and each group of burner control and display component is respectively connected with the corresponding burner; and each group of combustors comprises a pulse igniter, a thermocouple electromagnetic valve, an ignition probe and a combustor nozzle. After an ignition switch is started, a pulse igniter discharges, an ignition probe forms electric sparks near a burner nozzle, meanwhile, a fuel gas adjusting valve is opened, and ignition can be completed, so that the ignition time is saved, the one-time ignition success rate is increased, and the stability of technological parameters of a heating furnace is guaranteed; fluctuation of technological parameters such as flow, temperature and pressure of a heating furnace system caused by long-time unsuccessful ignition is avoided, and unqualified product quality of the device is influenced. By adding the thermocouple induction needle, the thermocouple electromagnetic valve can be cut off immediately when the heating furnace flames out, and safe and stable operation of the device is protected.

The auxiliary inflation device comprises a plurality of supporting frames which are sequentially arranged in a straight line mode, the specifications of the supporting frames are sequentially increased, the supporting frames can be stacked together, every two adjacent supporting frames are connected through at least one X-shaped deformation frame, one side edge of each supporting frame is a bottom edge, and the other side edge of each supporting frame is a top edge. Extension units are arranged on the other side edges of the supporting frame, each extension unit comprises a supporting arm which is parallel to the corresponding side edge of the supporting frame and can move away from the side edge of the supporting frame, and when the hot-air balloon is inflated, the supporting frame can separate the connecting ropes and also can open the open end of the balloon, so that the hot-air balloon is inflated. The flame ignited by the combustor can penetrate through the supporting frames to enter the balloon, the connecting rope can be prevented from being burnt out, the opening end of the balloon can be opened, the opening end of the balloon does not need to be opened manually, the ignition time of the spot-spraying type inflation flame can be prolonged, and therefore the inflation efficiency is improved.

The invention relates to the technical field of scramjet engines, solves the technical problems that a scramjet engine wide-area structure is high in combustion difficulty and flame stabilization difficulty, and particularly relates to a hydrogen peroxide catalytic decomposition gas atomization injection concave cavity integration module and an injection flame stabilization enhancement method. Liquid hydrogen peroxide is decomposed into high-temperature oxygen and water vapor by adopting a catalytic decomposition module, then the high-temperature oxygen and the water vapor are mixed with kerosene in a decomposition gas pipeline to form kerosene which is aerated and atomized by the high-temperature oxygen and the water vapor, the kerosene is transversely sprayed at the upstream of a concave cavity through a gas atomization kerosene spraying hole, and gas atomization kerosene transverse jet flow is formed in a supersonic combustion chamber; therefore, the combustion efficiency is improved. The oxygen-enriched jet flow for enhancing the combustion performance is formed in the supersonic combustion chamber, the ignition performance of liquid kerosene can be improved, meanwhile, the atomization particle size can be reduced, the jet flow penetration depth can be increased, the fuel gas mixing efficiency can be improved, and the supersonic combustion flame stabilizing range of the liquid kerosene can be widened.

The utility model relates to an igniter for a sintering machine, which is applied to the technical field of sintering production, solves the problems that the edge effect is easy to generate on the edge of the existing sintering pallet, and the productivity of the sintering machine and the quality of sintered ore are restricted. An ignition assembly I and an ignition assembly II are sequentially arranged on the upper end face of the furnace body in the running direction of the sintering pallet, the ignition assembly I comprises at least two edge ignition nozzles, and the two edge ignition nozzles are oppositely arranged on the two sides of the furnace body in the transverse direction. The two edge ignition nozzles are used for igniting sintering materials laid on the edges of the two transverse sides of the sintering pallet, the ignition assembly II comprises a plurality of first ignition nozzles, the first ignition nozzles are distributed on the furnace body in at least one row, and the ignition assembly further comprises a gas source assembly for supplying gas to the edge ignition nozzles and the first ignition nozzles; the method has the effects of increasing the thickness of a combustion layer, inhibiting the edge effect, improving the ignition strength of a mixture at the edge of the sintering pallet and effectively reducing the return rate of sintered ore.

This application belongs to the field of cable material technology and proposes a method for preparing environmentally friendly, low-smoke, halogen-free polyethylene cable material. High-density polyethylene is melt-grafted with vinyltrimethoxysilane and triethyl borate to form a cross-linked network containing Si-O-B bonds. During combustion, this network pyrolyzes to generate B2O3 and SiO2 nanoparticles. The former melts to form a liquid layer that adsorbs free radicals to inhibit the combustion chain reaction, while the latter forms a eutectic glass phase with B2O3. Combined with ZnO nanoparticles released from the decomposition of a borosilicate-metal chelating agent as a flux, a dense glass-ceramic layer is formed in the carbon layer to isolate oxygen and heat. Simultaneously, ethylene-vinyl acetate copolymer, as a vinyl elastomer, not only improves flexibility through its toughening phase, but its vinyl groups also interact with the Si-O-B bonds of the borosilicate-grafted polyethylene, achieving a comprehensive improvement in flame retardancy, smoke suppression, and mechanical properties.

The invention relates to the technical field of bamboo processing, in particular to flame-retardant recombined bamboo based on inorganic fiber reinforcement and a preparation method of the flame-retardant recombined bamboo. The preparation method comprises the following steps: mixing silane-grafted inorganic fibers with phenolic resin to prepare inorganic fiber modified phenolic resin; and the recombined bamboo unit soaked with the flame retardant solution is soaked in the inorganic fiber modified phenolic resin, taken out, dried and subjected to assembly hot press forming, and the flame-retardant recombined bamboo is obtained. According to the invention, the phosphorus-boron composite system and the inorganic fiber are respectively utilized to improve the flame retardance of the inner-layer recombined bamboo unit and the heat-resistant charring property of the adhesive layer, so that the ignition time of the flame-retardant recombined bamboo can be prolonged, and the peak value of the heat release rate is obviously reduced. And meanwhile, the inorganic fibers can achieve the effect of enhancing the mechanical property of the flame-retardant recombined bamboo. In addition, the preparation method of the flame-retardant recombined bamboo is easy and convenient to implement, low in cost and remarkable in effect, and has great popularization value.