METHOD OF HOLES MAKING IN TUBE PLATES AND PARTITIONS OF SHELL-AND-TUBE HEAT-EXCHANGERS Russian patent published in 2008 - IPC B23B35/00 B23B49/02 

FIELD: technological processes.

SUBSTANCE: method consists in the fact that conductor plate is installed in the center of tube plate or partition and fixed in relation to plate or partition by means of holder. Holder is made with two fingers, one of which is installed in the opening of conductor plate, and the other one - tangentially to external cylindrical surface of tube or partition. After plate has been fixed, openings are drilled in central part of plate or partition, which is located under conductor plate. Then conductor plate is displaced to periphery of tube or partition, fixed with holder that has two fingers installed in the openings of conductor plate and two openings matched with them and arranged in central part of tube and partition, and then drilling is performed along guiding openings of conductor plate in part of tube or partition under conductor plate.

EFFECT: expansion of technological resources.

2 dwg