DEVICE FOR PARTS CONNECTION OF GAS TURBINE PLANT Russian patent published in 2015 - IPC F16B5/02 

FIELD: machine building.

SUBSTANCE: invention relates to general machine building, in particular to gas turbine plants, internal combustion engines, where parts and their connections work at high temperature for long time period. The device for parts connection of the gas turbine plants containing end support surfaces - securing bolts in form of cylindrical rod with head and thread, passing through holes at single line, and made in the connected parts, washer and nut installed on thread until tightening of the connected parts with rated torque, at that, at least on one end supporting surface of the bolt head, and/or nut, and/or washer one and more ring grooves are made for lubrication, at that ratio of thread pitch to thread depth, and thread pitch to groove width is 1.5…15 and 0.75…3, respectively, and start torque upon the nut or bolt undo exceeds the rated tightening torque by maximum 30%. The groove can contain grease in form of the colloidal graphite C 1 or C 2 or their mixture on chalky basis PS1.

EFFECT: invention increases number of attempts of bolts and nuts re-use by maximum 20% and reduces economic expenses.

2 cl, 3 dwg