44results about How to "Uniform heat load" patented technology

The invention relates to a power tracking excitation control method and system for a dual-axis excitation generator. The q-axis power tracking excitation control system is used to track and control the active power of the motor, so that the actual value P of the active power is equal to the given active power value P. 0 ;The reactive power of the motor is tracked and controlled by the d-axis power tracking excitation control system, so that the actual value of reactive power Q is equal to the given value of reactive power Q 0 ; The motor excitation current is tracked and controlled by the q-axis power tracking excitation control system, so that the q-axis excitation current i fq Equal to the d-axis excitation current i fd . The invention can effectively control the power, shorten the dynamic process and reduce the oscillation amplitude.

A low-emission gas combustion furnace and a combustion-supporting air configuration method thereof relate to the technical field of combustion equipment and solve the technical problem of reducing NOx emissions. In the throat of the gas combustion furnace, the first swirler, the middle cylinder, and the second swirler are coaxially sleeved in sequence from the outside to the inside; a plurality of stable blocks are arranged symmetrically between the outer ring of the first swirler and the inner wall of the throat. Flame plate; there are multiple L-shaped gas guns and oblique gas guns arranged and fixed around the axis of the throat with equal diameters between the flame-stabilizing plates. Fuel holes and multiple lateral gas holes; there are multiple oblique gas holes on the oblique gas gun, and the gas injection directions are all inclined outwards in a divergent state without interfering with each other. Combustion-supporting air enters the throat from the central combustion-supporting air passage in the middle cylinder and the second combustion-supporting air passage outside the middle cylinder, and the combustion-supporting air entering the throat from the second combustion-supporting air passage accounts for 80% to 95% of the total combustion-supporting air. The gas combustion furnace provided by the invention has low NOx emission.

The invention discloses a supercritical carbon dioxide coal-fired circulating fluidized bed boiler, a power generation system and a power generation method. The supercritical carbon dioxide coal-firedcirculating fluidized bed boiler comprises a hearth, a separator, a tail flue and an externally-arranged type heat exchanger located in a material back section of the separator. A cooling wall and anintermediate-temperature overheater are arranged in the hearth. A high-temperature reheater and a low-temperature overheater are arranged in the externally-arranged type heat exchanger, wherein the low-temperature overheater communicates with the cooling wall and the intermediate-temperature overheater. A low-temperature reheater, a high-temperature overheater, an upper-level economizer, a lower-level economizer and an air preheater are arranged in the tail flue, wherein the high-temperature overheater communicates with the intermediate-temperature overheater, the low-temperature reheater communicates with the high-temperature reheater. The working medium of the boiler is supercritical carbon dioxide. By the adoption of the supercritical carbon dioxide coal-fired circulating fluidized bedboiler, the wall temperature of the cooing wall can be effectively controlled, it is guaranteed that the boiler safely and reliably operates, and the heat efficiency is high; a power generator set tends to be miniature, a higher load response speed is obtained, the deep peak load regulation adaptability is high, the advantages of coal resources are taken into full play, the energy utilization rate is improved, and energy safety is guaranteed.

An ammonia low-nitrogen multi-stage swirl burner, including an outer air cylinder and an inner air cylinder, a direct air passage is formed between the inner wall of the outer air cylinder and the outer wall of the inner air cylinder, and a number of main gas pipelines are evenly distributed along the outer wall of the inner air cylinder , the inner air duct is coaxial swirl air channel, swirl air channel, central air channel and central gas injection channel from outside to inside. The central gas injection channel, swirl air channel and main gas pipeline divide the gas into three parts; the central air The air is divided into three parts by the channel, the straight air channel and the swirling air channel. The fuel and air are classified in the inner air duct. In addition, the burner can also include a flame dividing ring placed at the front end, which can divide the flame. Increase the contact area between gas and air to make the combustion more complete, and the fuel and air are mixed in layers, which is beneficial to enhance the mixing effect of gas and air. Slowing down the heat radiation transfer between the components and the surrounding high-temperature environment is conducive to improving the service life of the components.

The invention relates to a detachable waste heat recovery high-efficiency heat exchanger which comprises a shell (6); the two ends of the shell (6) are respectively connected with a tapered fluid inlet (11) and a tapered fluid outlet (15); the detachable waste heat recovery high-efficiency heat exchanger is characterized in that the tapered fluid inlet (11) is internally provided with a fluid uniform distributor (12); baffle plates are respectively arranged above and under a tube bundle as well as in front of and at rear of the tube bundle; at least two groups of detachable heat exchange units (16) which are connected in series or in parallel are arranged in the shell positioned between the tapered fluid inlet (11) and the tapered fluid outlet (15); and each heat exchange unit (16) is formed by at least two detachable U-shaped heat exchange tube bundle components (17) which are connected in series. The detachable waste heat recovery high-efficiency heat exchanger has the advantages ofbeing small in size, convenient to disassemble and convenient in daily maintenance and overhauling.