3 results about "Inlet velocity" patented technology

This invention provides a method for arranging baffles in a high-pressure hydrogen storage tank based on the jet dissipation transition point, and a hydrogen storage tank in the field of hydrogen storage. The method includes: establishing a baseline flow field of the high-pressure hydrogen storage tank under conditions where no baffles are installed; obtaining the axial velocity distribution and turbulent kinetic energy distribution along the central axis of the high-pressure hydrogen storage tank in the baseline flow field; identifying the location where the turbulent kinetic energy of the fluid first reaches its peak value in the region where the ratio of axial velocity to fluid inlet velocity first decays below a preset ratio threshold, and determining this spatial location as the jet dissipation transition point; arranging baffles at the jet dissipation transition point, or arranging baffles within a preset axial range near the jet dissipation transition point. This method can determine a more optimal baffle position. By arranging the baffles at the jet dissipation transition point, the residual axial kinetic energy of the jet is efficiently converted into radial turbulent kinetic energy, inducing large-scale vortex structures, thereby significantly enhancing downstream wall heat transfer.

The utility model relates to the technical field of fluidized bed boilers, and discloses a circulating fluidized bed boiler with a high-temperature separation function, which comprises a hearth, a boiler barrel device, an air distribution device, a separator, a return feeder and a tail flue, the separator adopts a high-temperature cyclone separator design, an inlet of the separator is in an inclined and tapered form, a central barrel is arranged at the top of the separator, and the tail flue is arranged in the central barrel. An inlet is formed in the left side of the separator. According to the utility model, by optimizing the design of the high-temperature cyclone separator, the separation efficiency is improved to more than 99.5%, the fine ash share is increased, the flow rate of a flue gas inlet is effectively improved, the speed of external swirling air flow is increased, and the air flow field is optimized, so that the separation efficiency is obviously improved; according to the bell jar type coal-leakage-free air cap, through multi-dimensional innovation and optimization of the structure, the material, the air distribution performance, the maintainability and the like, the operation efficiency and stability of the boiler are remarkably improved, meanwhile, the maintenance requirement is reduced, and a guarantee is provided for safe and efficient operation of the circulating fluidized bed boiler.