Secondary thermal barrier for the main circulation pump of nuclear power plant primary circuit and modification and repair method of the pump by making use of that barrier

摘要

ufeffsekundu00e1rnu00ed thermal barrier for main circulation pump primary circuit of nuclear power plant is arranged between a top side rozvu00e1du011bcu00edho wheels and shells and contains at least the lower base (1) in the shape of the outer part, which after its internal and external ob the water added internal height compensation wall (3) and outer wall (2), the height compensationwith the bottom base (1) is formed for the establishment of a primary thermal barrier (5) and the inner wall (3) and height the outer height compensation wall (2) are generated for a sealed connection with the shells.in the implementation of the presentation of the circulating pump primary circuit of nuclear power plants to prevent cracks in the flange rozvu00e1du011bcu00edho wheels and / or flange shell in the dividing plane of the pump, which is adjacent the flange rozvu00e1du011bcu00edho wheelsfirst carry out positive changes in the contact flange main dividing plane main circulating pumps and in place of a voltage potential damage, in particular in areas adjacent to the fixed flange rozvu00e1du011bcu00edho wheelsand then divide the space between the primary thermal barrier and contact the flange main dividing plane on at least three separate areas of secondary thermal barrier temperature. in the implementation of the method of repair tvarovu00fdch adjustments prior to first remove ma teriu00e1l containing indications.