45results about How to "Solve combustion instability" patented technology

The invention provides an afterburner and a turbine engine. The afterburner comprises an outer cylinder assembly, a center body assembly, an oil way assembly, an annular combustion chamber and an igniter; the center body assembly comprises a front body, a middle body and a rear body, wherein the front body is located at the axial front end of the afterburner and forms a gas inlet, accepting entry of oxygen-containing gas, of the annular combustion chamber with the outer cylinder assembly, the middle body is located behind the front body along the axis and is connected to the front body and integrated with the front body, and the rear body is located behind the middle body in the axial direction, is arranged in the middle body in a slid and sleeved mode and forms a gas outlet of the annular combustion chamber with the outer cylinder assembly; the igniter is arranged at the corresponding part, forming the annular combustion chamber with the outer cylinder assembly, of the center body assembly and is used for igniting fuel gas formed by fuel and the oxygen-containing gas entering the annular combustion chamber, then rotation and knocking combustion of the fuel gas are realized, and therefore the problem that combustion of the afterburner is instable is solved, the heat efficiency of combustion is improved, and the power capability of working media is improved.

The invention discloses a grid frequency regulation method for reducing loads of a generator set rapidly. The method includes the steps that a rapid load reduction set is prepared, the control mode and the steam inlet mode of the rapid load reduction set are selected, the rapid load reduction capacity of the rapid load reduction set is obtained through a simulation experiment, then a grid frequency regulation range is determined according to the correspondence between grid frequency and loads in a large power source-heavy load direct power supply system, then the number of turbine steam inlet regulation valves, needing to be closed, in the generator set is determined according to the grid frequency regulation range and the corresponding amount of loads reduced by rapidly closing turbine steam inlet regulation valves, and the steam inlet regulation valves, on the power side, of the generator set are rapidly closed to rapidly reduce the loads. The method is suitable for rapidly reducing the loads of generators in the large power source-heavy load direct power supply system to achieve grid frequency regulation, solves the problem that when grid frequency in the large power source-heavy load direct power supply system is excessively high, no small set of an appropriate capacity is available to be cut off so as to reduce the grid frequency, achieves the purpose of reducing the loads to reduce the frequency without shutdown and avoids the risk of grid breakdown of a power source system.

The invention belongs to the technical field of AGC (automatic gain control) control and discloses an AGC control method for a 660MW supercritical unit under deep peak-load regulation. The method includes: when a unit load enters a deep peak-load regulation range, subjecting flow of steam pumps to minimum flow limitation; when the flow of each single steam pump is smaller than 435T / H, enabling a steam pump recirculation valve to participate in steam pump inlet flow regulation, slowly opening, and keeping each steam pump operating above minimum output; increasing smoke temperature on a boiler side, and slowly closing a denitrification wide load baffle along with the unit load to keep smoke temperature under a low unit load condition; after the unit load enters the deep peak-load regulationrange, automatically reducing the rate through AGC rate judgment, and enabling boiler master control and steam engine master control PID self-adaption variable-parameter control through AGC control, so that automatic control quality can be improved. Automatic control of the steam feed pump recirculation valve and the denitrification wide load baffle along with the unit load, AGC automatic controlunder deep peak-load regulation, steam engine master control PID self-adaption control and boiler master control PID self-adaption control are realized.

The invention belongs to the technical field of renewable energy, and in particular relates to a biomass low-temperature charcoal-gas cogeneration device, a biomass low-temperature charcoal-gas cogeneration device and a charcoal-gas cogeneration method. The biomass low-temperature carbon-gas cogeneration device includes a feeding device, a fluidized bed charcoal-gas cogeneration furnace body, a biomass charcoal reheating device, a gas-solid separation device, a blower, and a biomass charcoal cooling and collecting device. The biomass low-temperature carbon-gas cogeneration device includes all the devices of the biomass low-temperature carbon-gas cogeneration device and also includes a waste heat boiler and a flue gas fan. The invention has the advantages of high-quality produced biomass charcoal, low pyrolysis temperature of biomass raw materials, and the like.

The invention provides a turbine engine. The turbine engine comprises a receiver, a turbine, a shunt ring, a shell, an oil way component and an igniter. The shunt ring is connected to the front end of the receiver, and coats the turbine with the receiver. The shell accommodates the receiver, and forms an outer culvert combustion chamber with the outer wall surface of the receiver; and the shunt ring and the internal of the receiver form an inner culvert airflow channel. The oil way component is controlled to communicate to the outer culvert combustion chamber. The igniter is arranged in the outer culvert combustion chamber for igniting gas to generate knocking combustion of the gas. In the turbine engine, the outer culvert combustion chamber is simple in structure and light in weight, so that the thrust-weight ratio of the engine is largely increased. As the igniter is arranged in the outer culvert combustion chamber, the gas entering the outer culvert combustion chamber can rotate to generate the knocking combustion, the problem of unstable combustion of a traditional turbine engine is solved, the combustion heat efficiency is improved, and the fuel economy and the working reliability of the turbine engine are improved.