FIELD: process engineering.
SUBSTANCE: nozzle element is made of composite including fibrous reinforcement compacted by ceramic matrix. It comprises sections of inner and outer bases and at least one blade attached thereto. Base sections extend at every zone of their attachment to the blade. Fibrous reinforcement comprises fibrous structure woven by 3D or multiple ply weaving that features continuity in the entire volume of nozzle element and over the entire periphery of one or every blade. Solid fibrous blank is woven that contains in lengthwise direction, at least the following elements: one pattern including first segment that makes the blade preform blank, second segment extending the first one at its one lengthwise end to make two wings facing each other. Third element extends the first one at its opposite end to make two wings facing each other. This blank is turned to make wings of the second and third segments extend perpendicular to first segment. Blank shape is developed to make fibrous preform of nozzle element. Note here that blade part making the preform is produced by shaping the first segment. Parts that make the preforms of base sections are produced from wings. Then, preforms are compacted by matrix to make a solid nozzle element with fibrous reinforcement. Fibrous reinforcement comprises fibrous structure that features continuity in the entire volume of nozzle element and over the entire periphery of one or every blade. Other inventions of the set relate to turbine nozzle made as described above and to gas turbine with such nozzle.
EFFECT: higher mechanical properties.
15 cl, 30 dwg
