Abstract: A casing including: a first casing section and a second casing section configured to be joined to the first casing section to form the casing; a first hole extending through a portion of the first casing section; a second hole extending through a portion of the second casing section, wherein the first and second holes are configured to be in alignment while the first and second casing sections are joined; a bushing seated in the second hole; a fastener having a shaft configured to extend through the first hole, extend into the second hole, and seat in and engage the bushing, wherein a thermal expansion coefficient of the bushing is greater than a thermal expansion coefficient of the shaft of the fastener, and the thermal expansion coefficient of the fastener is greater than a thermal expansion coefficients for each of the first and second casing sections.

Abstract: A casing including: a first casing section and a second casing section configured to be joined to the first casing section to form the casing; a first hole extending through a portion of the first casing section; a second hole extending through a portion of the second casing section, wherein the first and second holes are configured to be in alignment while the first and second casing sections are joined; a bushing seated in the second hole; a fastener having a shaft configured to extend through the first hole, extend into the second hole, and seat in and engage the bushing, wherein a thermal expansion coefficient of the bushing is greater than a thermal expansion coefficient of the shaft of the fastener, and the thermal expansion coefficient of the fastener is greater than a thermal expansion coefficients for each of the first and second casing sections.

Abstract: The invention relates to a full arc admission steam turbine, which includes a plurality of nozzle boxes for inducing steam, and a plurality of nozzle plates for bearing nozzles, one nozzle plate corresponding to each nozzle box. The steam turbine 100 further includes a plurality of spacer plates corresponding to the plurality of nozzle boxes, wherein the spacer plate is disposed between the nozzle plate and the nozzle box, by which a flow path is formed between the plurality of nozzle boxes and the plurality of the nozzle plates through the plurality of spacer plates to achieve a full arc admission. With the solution according to embodiments of the present invention, existing partial arc steam turbine may be easily converted to be a full arc admission steam turbine. This will reduce cost of equipment upgrading. Outage due to onsite conversion may be significantly reduced.

Abstract: The invention relates to a full arc admission steam turbine, which includes a plurality of nozzle boxes for inducing steam, and a plurality of nozzle plates for bearing nozzles, one nozzle plate corresponding to each nozzle box. The steam turbine 100 further includes a plurality of spacer plates corresponding to the plurality of nozzle boxes, wherein the spacer plate is disposed between the nozzle plate and the nozzle box, by which a flow path is formed between the plurality of nozzle boxes and the plurality of the nozzle plates through the plurality of spacer plates to achieve a full arc admission. With the solution according to embodiments of the present invention, existing partial arc steam turbine may be easily converted to be a full arc admission steam turbine. This will reduce cost of equipment upgrading. Outage due to onsite conversion may be significantly reduced.

Abstract: A method of coupling at least two sections of a rotor designed to carry the rotating parts of a turbine for the generation of electrical power for a public grid and a modified rotor is described with a coupling of increased diameter exceeding the nominal diameter of the rotor, with the step of removing mass from an volume lying exclusively within the interior of the sections when coupled such that the lateral critical speed of the coupling is moved away from the normal operating speed of the rotor