5 results about "Combustion system" patented technology

The invention discloses a double-cylinder four-piston opposed hydraulic control engine. Two groups of opposed piston components are respectively provided with a group of opposed moving pistons; and joints at oil-receiving ends of the pistons correspond to those of two groups of reciprocating volume pumps on a rotating main shaft respectively. The main shaft is rotated, then the volume pump is changed to be directly coupled on the piston, and the moving direction and the positions of the inner dead point and the outer dead point of the pistons are controlled accurately so as to respectively finish the working stroke of gas inlet, compression, working expansion and exhaust, and power output. In the double-cylinder four-piston opposed hydraulic control engine, the pistons are controlled by asimple mode so as to give consideration to the advantages of the conventional engine and the hydraulic free-piston engine, and also avoid the respective defects. Other systems such as a starting system, an oil supply system, a combustion system, a cooling system and a sealing system share the existing fully-mature technology so as to be convenient for implementation of the project. The double-cylinder four-piston opposed hydraulic control engine is applicable to promotion of the engine industry.

The invention provides a gas heat value soft measurement method based on air and gas double-preheating. The soft measurement method comprises the steps of obtaining real-time data of a combustion system operation parameter; performing preprocessing on the acquired data, and obtaining effective data for solving the gas heat value; and according to the acquired effective data, calculating a gas drybase heat value. According to the method of the invention, the gas dry base heat value is indirectly calculated through a relation between a dry air amount and the gas heat value. The method is suitable for combustion equipment in which pure burning of blast furnace gas or converter gas and air and gas double-preheating technology are utilized. A calculating result can be used for guiding combustion optimization adjustment of the combustion equipment, thereby supplying a basis for safe and economic operation of the combustion equipment. The gas heat value soft measurement method can settle inconvenience and a difficulty in combustion equipment operation caused by no gas heat value online analyzer in a majority of steel plant gas combustion systems, and furthermore has high engineering value.