5results about How to "Flame stabilization" patented technology

The application belongs to the technical field of gas turbine engines, and provides a combustion chamber with intelligent point flameout and an ignition method, which comprises: a diffuser connected with a machine case; a flame tube is installed in the machine case, the flame tube has a backflow area in the inside, and the backflow area is surrounded by a high-speed shear layer; an ignition system comprises an ignition electrode; when the flame tube is ignited, or when the pressure in the flame tube is lower than a preset value, or when the pressure change rate in the flame tube exceeds a preset range, the ignition electrode moves to the backflow area through the high-speed shear layer. The combustion chamber has an electromagnetic / pneumatic force coupled ignition system, the ignition position is moved from the high-speed shear layer to the backflow area, thereby being beneficial to flame stabilization, the generation probability of an initial flame core can be greatly improved, and due to the fact that the initial flame core is located in the backflow area, the propagation distance of the initial flame core can be significantly shortened or even eliminated, and the engine ignition envelope range can be greatly widened.

This invention belongs to the field of iron and steel metallurgy technology, specifically relating to a staged combustion system and process for a gas boiler. The system includes a burner connected to the gas boiler, a combustion-supporting gas structure, and a combustion-supporting air structure. The burner includes a combustion stabilizing plate, located at the front end of the burner and connected to the gas boiler. The combustion stabilizing plate has three layers of staged ignition units evenly arranged around its center: an inner layer, a middle layer, and an outer layer. The middle layer ignition unit includes multiple externally mixed combustion nozzles, where combustion-supporting air and gas mix outside the combustion stabilizing plate. The outer layer ignition unit includes multiple internally mixed combustion nozzles, where combustion-supporting air and gas mix inside the combustion stabilizing plate. The combustion-supporting gas structure provides fuel to the burner, and the combustion-supporting air structure provides combustion-supporting air to the burner. This invention effectively achieves complete combustion of the gas, reduces nitrogen oxide production, and provides a stable flame, demonstrating good performance in terms of safety, environmental protection, and efficiency.

This invention relates to the technical field of combustion devices, and particularly to a fuel blending flame stabilization structure, a dual-variable combustion chamber, and an engine. The fuel blending flame stabilization structure includes: a flame stabilization body, equipped with a pre-combustion channel and multiple fuel passages, one end of the pre-combustion channel having an inlet and the other end having an outlet; a swirler; multiple first nozzles; multiple second nozzles; and multiple third nozzles; wherein the second nozzles arranged in adjacent fuel passages intersect in direction, and the direction of the third nozzles is the same as the direction of the pre-combustion channel outlet. This invention achieves flame stabilization in the pre-combustion stage through the combination of the swirler and the first nozzles; the intersecting directions of the second nozzles arranged in adjacent fuel passages achieve flame stabilization; and the injection of fuel by the third nozzles towards the pre-combustion channel outlet of the flame stabilization body enables circumferential flame propagation, achieving a stable flame stabilization effect. It is applicable to the outer ring of a dual-variable combustion chamber, thereby achieving flame stabilization in the outer ring of the dual-variable combustion chamber.

The invention relates to the technical field of diesel generators, in particular to an ultra-light diesel generator set and a working method thereof, and the ultra-light diesel generator set comprises an oil tank, an oil pump, an electronic control unit, a starter set, an engine and a generator connected to the output end of the engine; the oil inlet end of the oil pump extends into the bottom of the oil tank inner cavity; the other end of the oil pump is connected with an oil inlet pipe; an oil injector is connected between the oil inlet pipe and the engine; a pulse cracker is connected in the oil sprayer; the starter unit, the generator and the oil pump are all electrically connected to the electronic control unit. And a plasma ignition head is arranged on the engine. When the device is used, the device is high in low-temperature adaptability, high in starting and response speed, high in efficiency, high in reliability and more convenient to carry.

This utility model discloses a porous media regenerative low-NOx burner nozzle, including a wind box. A tube is disposed on the front side of the wind box, and the back side of the tube is fixedly connected to the front side of the wind box via a first bolt. A heat-conducting pipe is disposed on the outer arc surface of the tube, and a heat-conducting grid is disposed at the bottom of the front side of the wind box. Both ends of the heat-conducting pipe are fixedly connected to the front side of the heat-conducting grid. This utility model provides a porous media regenerative low-NOx burner nozzle that effectively utilizes the high-temperature flue gas generated during combustion to preheat the air entering the wind box. The preheated air temperature is significantly increased, promoting fuel-air mixing and combustion efficiency, and avoiding incomplete combustion caused by low inlet air temperature. This not only improves thermal energy utilization and reduces fuel consumption but also helps reduce the generation of nitrogen oxides, meeting the environmental protection requirements of energy conservation and emission reduction, and is suitable for high-temperature equipment such as industrial furnaces and kilns.