WORKING CASSETTE OF A NUCLEAR REACTOR WITH HEAT POWER FROM 1150 TO 1700 MW (OPTIONS)

摘要

1. Working cassette of a nuclear reactor with a thermal power from 1150 to 1700 MW, containing a tail and a head, connected by a frame made of supporting corner elements connected by contact welding with spacer grids, recruited from cells installed along a triangular grid with the formation of coaxial hexagonal rows, characterized in that in the second, or third, or fourth row from the center, instead of cells, three or six frame pipes are installed with an equal angular pitch around the axis of the central tube, connected to the tail part and rigidly connected to adjacent cells. ! 2. Working cassette according to claim 1, characterized in that the frame pipes are installed in the corners of the second, or third, or fourth row or in the middle of the sides of the second or fourth row. ! 3. Working cassette according to claim 1, characterized in that welding is used to connect the frame pipes with the cells, and welding, or thread, or collet is used with the tail part. ! 4. Working cassette according to claim 1, characterized in that the spacer grids are connected to the central pipe. ! 5. Working cassette according to claim 1, characterized in that the frame pipes and supporting corner elements are made of E635 zirconium alloy. ! 6. Working cassette according to claim 1, characterized in that the frame pipes are made with the possibility of filling their cavities with a coolant. ! 7. Working cassette according to claim 1, characterized in that the width d of the beam of the support corner is selected from 1.71 · t to 1.9 · t, where t is the step of the triangular grid. ! 8. Working cassette according to claim 7, characterized in that the step t of the triangular mesh is selected from 12.55 to 12.65 mm. ! 9. Working cassette according to claim 1, characterized in that the frame is connected to the head