5 results about "Flame height" patented technology

The application relates to a candle pop. The candle pop comprises a shell, a wax base, a wick and a driving mechanism. The shell is provided with a containing cavity. The wax base is arranged in the containing cavity. The wick is arranged in the wax base and is used for burning the wax base. The wick has a burning section exposed outside the wax base and used for burning. The driving mechanism is arranged on the shell and drives the wax base to slide in the containing cavity, so that the distance between the free end of the burning section and the open mouth of the containing cavity and the wax base is within a set range. Thus, the position of the free end of the burning section in the containing cavity is basically kept constant, so that the position of the flame in the containing cavity is basically kept constant, that is, the height of the flame is basically kept unchanged. In the case that the height of the flame is basically kept unchanged, the user can observe the flame through a basically constant visual angle without frequently changing the visual angle to adapt to the flame with a great change in height. Thus, the flame generated by the burning section has a reasonable observation visual angle, so that the user experience is improved.

The present application belongs to the field of warmers, and particularly relates to an outdoor gas warmer. The outdoor gas warmer comprises, from bottom to top, a gas source storage box, a valve body assembly and a combustion assembly, which constitute a tower-shaped main body as a whole; the gas source storage box is of a box structure, the valve body assembly is internally provided with an electromagnetic flow valve, a multi-pass composite gas valve, an igniter and a burner; the electromagnetic flow valve is used for controlling the gas flow, the multi-pass composite gas valve controls the gas flow direction and guides the gas to the igniter; the igniter is used for ignition; the combustion assembly comprises a glass tube with a lower end cover arranged on the burner to close the burner, and is provided with a gas valve for supplying the combustion gas into the glass tube. The present application can effectively improve the gas utilization rate, simultaneously heats through two forms of heat radiation and contact heat transfer, reduces the energy invalid loss, improves the temperature rising rate, in addition, can visually estimate the flame height to estimate the gas residual amount, can realize continuous and uninterrupted combustion and gas supply, and the use effect is obviously improved.

This invention discloses a perfluorohexanone (PFH) fire extinguishing performance testing system and method, comprising a PPH storage tank and a laboratory. The PPH storage tank is located outside the laboratory and is connected to the laboratory via a pipeline. An oil pan is located in the center of the laboratory to simulate a fire source. A thermocouple tree is connected to the upper side of the oil pan to measure the temperature at different flame heights. Multiple first thermocouples are installed at different heights on the side walls of the laboratory to measure temperature changes at different heights. Nozzles are detachably connected to the ends of the pipelines. The nozzles are evenly arranged at a designed spacing, and the spray coverage of the nozzles completely covers the protected area of ​​the laboratory. A high-definition camera and a thermal imaging camera are installed in the laboratory. This invention can monitor the fire extinguishing performance of PPH under different spray pressures and nozzle types, and the test data is accurate.

This invention discloses a method and apparatus for quantitatively grading and evaluating the fire extinguishing and reignition resistance performance of microcapsule fire extinguishing patch products. The method includes: S1: Installing the microcapsule fire extinguishing patch product under the sample fixing platform and arranging thermocouples; S2: Adjusting the flame of the combustion needle to a specified flame height and recording the fuel flow rate or valve opening; S3: Setting an initial extinguishing distance and recording the actual extinguishing time; S4: Gradually increasing the extinguishing distance, repeating step S3, recording the extinguishing time at each extinguishing distance, and plotting the extinguishing time-extinguishing distance relationship curve; S5: Determining the maximum extinguishing distance based on step S4, and repeating step S3 at this distance, recording the number of repeatable extinguishing attempts, and evaluating the microcapsule fire extinguishing patch product by combining the grading results of the maximum extinguishing distance and the grading results of the number of repeatable extinguishing attempts. This invention provides a scientific evaluation method for the engineering application and standardized management of microcapsule fire extinguishing products, ensuring the quality of advanced technology products.

The utility model relates to a kind of low NOx short flame ethylene cracking furnace combustor, including air bellow, firebrick, gas collector, staged fuel gas branch pipe, primary nozzle, secondary nozzle and air distributor, each staged fuel gas branch pipe connects primary nozzle and secondary nozzle, the primary nozzle enters the intermediate combustion passageway in firebrick, the secondary nozzle is stretched out from firebrick periphery, the firebrick periphery is equipped with the fire-igniting inclined plane that converges inward to secondary nozzle, the firebrick top end surface is equipped with flame platform, the fire-igniting inclined plane is equipped with flat flame tunnel corresponding each secondary nozzle, the flat flame tunnel is set below flame platform, the flat flame tunnel is through in and out radially to firebrick.The utility model reduces NOx, optimizes air by air distributor, changes fuel injection and flame structure, to reduce flame length, the height of flame is dynamically fed back by CO probe, real-time monitoring is carried out to the height of flame, ensure combustion stability.