The lower tip inserted rods of a nuclear reactor VVER-440

摘要

The lower tip inserted rods of a nuclear reactor VVER-440 fitted to the lower end of the three grooves (4) and three lower claws (3) with spherical, convex externally, mating surfaces (5), where over grooves (4) and lower claws (3) is lower terminal equipped with an outdoor recess (15) and three upper claws (2) and the upper claws (2) are connected to the cylindrical body (1) radius (6) of the upper claw and the leading edge of the body (1) is an external necking-down (13) separate the thread (12), and between the body (1) and necking -down (13) are situated in the four depressions (9) for the locking washer, the center of the bottom of the lower end passes through the inner triangular opening (14) for the triangular lever, the upper part of the lower end is provided with internal cylindrical opening (11), the radius (6) of the upper tooth has a size of from 1 mm to 10 mm, spherical contact surface (5) is the size of the radio sphere R 20 mm and R 60 mm, bottom radius (8) situated at the lower end of the lower claws (3) has a size of from 1 mm to 10 mm, radius transition (7) situated between the spherical mating surfaces (5) and the outer recess (15) has a size of from 1 mm to 6 mm, the cylindrical interior bore (11) has a diameter of max. 26 mm between the internal cylindrical opening (11) and the hole inner triangular prisms (14) is situated inside necking - dawn (10) with a diameter of max. 30 mm and length of 10 mm, the inner diameter of the necking - dawn (10) is greater than the inner diameter of the cylindrical hole (11).