FIELD: machine building.
SUBSTANCE: invention relates to the power machine building and cryogenic systems, and can be used in steam generating systems and devices. Said tasks in proposed steam generator comprising parallel steam generating channels of different lengths with equal areas of through passage cross sections, connected to inlet and outlet collectors through throttling washers, are solved by the fact that the area of throttling washer cross passages for steam generating channels of a longer length is greater than for the steam generating channels of smaller length, the ratio of cross-section area of the washer of the steam generating channel of longer length to the area of the through passage section of the washer of the steam generating channel of smaller length is in direct ratio to the ratio of heat transfer surface area of the steam generating channel of a longer length to the heat transfer surface area of the steam generating channel of smaller length. Above-mentioned tasks in proposed steam generator comprising parallel steam generating channels of different lengths connected to the inlet and outlet collectors through throttling washers, wherein all inlet washers in steam generating channels with the same through passage area and the outlet washers from the steam generating channels also having the same through passage area, are also solved by the fact that the area of cross section of the steam generating channels of longer lengths is smaller than the steam generating channels of smaller length, wherein the areas of heat transfer surfaces of all steam generating channels of longer and smaller length are the same, and also the fact that the ratio of cross section of the inlet washers to area of cross-section of corresponding outlet washers is the same for all parallel steam generating channels, and in the fact that the total hydraulic resistance of the steam generating channels of different lengths with the inlet and outlet washers is the same for all parallel steam generating channels and in the fact that short steam generating channels have outer ribs, wherein for each short steam generating channel, sum of heat transfer area of ribs and the heat transfer area of steam generating channel is equal to the area of heat transfer surface of long steam generating channel without the ribs, and also in that in the case of cross flow of steam generating channels with external heat carrier, external hot heat carrier is directed from the side of steam generating channels of a smaller length towards the steam generating channels of a longer length. In addition, task of increasing efficiency of steam generator with across flow of the steam generating channels with the external heat carrier from the side of steam generating channels of longer length towards the steam generating channels of smaller length is solved by the fact that on the way of external hot heat carrier, a deflector is installed that distributes flow of hot heat carrier through the steam generating channels in direct ratio to areas of heat transfer surfaces of the steam generating channels. In addition, task of increasing efficiency of steam generator with across flow of the steam generating channels with the external heat carrier from the side of steam generating channels of longer length towards the steam generating channels of smaller length is solved by the fact that on the way of external hot heat carrier, a deflector is installed that distributes flow of hot heat carrier through the steam generating channels in inverse ratio to areas of heat transfer surfaces of the steam generating channels, and also the fact that in parallel to deflector and steam generating channels at the inlet of hot heat carrier, perforated heat-insulated channels are installed for supplying cooling medium to deflector and steam generating channels and in that the perforated heat-insulated channels are connected to heat carrier flow controller, which in turn is connected to control unit.
EFFECT: tasks of the invention are to increase in the heat carrier operation efficiency and flow stability in the steam generating channels.
10 cl, 7 dwg
