Patent ID: 7037065

Claim:
An arrangement for cooling or heating at least one bolt that fastens an upper and lower half of a flange in a turbine, wherein the at least one bolt is arranged in a particular radial direction of the upper and lower flange in a boring extending through the upper and lower half of the flange, and wherein the at least one bolt comprises one or more boreholes extending axially through the at least one bolt, and one or more inlet pipes each connected to a first end of each of the one or more boreholes; and wherein the one or more inlet pipes lead a heating or cooling fluid into the one or more boreholes, and one or more outlet pipes are each connected to a second end of the one or more boreholes, wherein the one or more outlet pipes lead said heating or cooling fluid out of the one or more boreholes, and the at least one bolt is arranged in the axial or longitudinal direction of the upper and lower half of flange; wherein the one or more boreholes extend axially through the length of the at least one bolt and the one or more inlet and outlet pipes are connected to the ends of the axially extending boreholes; and wherein the at least one bolt comprises additional radial boreholes that extend from an axially extending borehole to an open space between the at least one bolt and the walls of the boring in the upper and lower halves of the flange, in which the at least one bolt is placed.