Steam turbine with ring evaporator and steam generation by a laser heat source

摘要

The utility model relates to heat power engineering and power engineering and can be used for marine mobile and stationary power plants that use the potential energy of overpressure of superheated water vapor to create mechanical energy in turbines operating according to the Rankine cycle, as well as use to generate low-grade steam in heat supply systems. The steam turbine contains a condenser, a feed pump, and as a steam generator contains a ring evaporator installed ne units with turbine blades and heated by lasers, in which channels for supplying water are evenly arranged around the circumference, while water is fed into the evaporator channels through the annular collector by the feed pump. The annular channel of the evaporator can be made in the cross section either rectangular or hemispherical. Channels in the evaporator for water supply can be made cylindrical or slotted with a slit length equal to the height of the blades, which will ensure a more complete use of the input energy of steam at all stages of the turbine and a further increase in its efficiency. The number of lasers heating the evaporator is selected from the condition of ensuring its uniform heating, while also ensuring that the water passing through its channels is uniformly heated to the required temperature, which, in turn, will provide the required steam pressure and turbine power. The evaporator can be made from any material that allows heating without loss of strength properties to a temperature that provides heating of water to T = 500-700 ° C, while the thickness of the evaporator in the passage zone of the channels could It is made over a wide range, which depends on the flow rate of the water, the heating temperature, and the required power of the turbine. The use of an annular laser-heated evaporator with water heating in the channels passing through it ensures the generation of high-potential steam over a wide range, simplifies the design of the turbine and the apparatus that controls the operation of the turbine and regulating its power.