Abstract: The invention relates to an inner heat insulating and inner sound insulating structure of an HRSG duct wall in which a turbine combustion high temperature and high velocity gas whose temperature is approx. 650° C. and velocity is 30 meters per second (m/s) flows, wherein heat insulating members are filled between the inner plate at the gas flow side and the outer plate at the atmospheric side, an intermediate member is disposed at a middle portion between the inner plate and the outer plate, spacing between the inner plate and the intermediate member is retained by stud bolts while spacing between the outer plate and the intermediate member is retained by stud bolts, and the stud bolt and the outer plate are tightened via a vibration deadening washer.

Abstract: The invention relates to an inner heat insulating and inner sound insulating structure of an HRSG duct wall in which a turbine combustion high temperature and high velocity gas whose temperature is approx. 650° C. and velocity is 30 meters per second (m/s) flows, wherein heat insulating members are filled between the inner plate at the gas flow side and the outer plate at the atmospheric side, an intermediate member is disposed at a middle portion between the inner plate and the outer plate, spacing between the inner plate and the intermediate member is retained by stud bolts while spacing between the outer plate and the intermediate member is retained by stud bolts, and the stud bolt and the outer plate are tightened via a vibration deadening washer.

Abstract: In a speed reduction motor comprising a motor and a speed reduction device connected to the motor for the purpose of reducing and transmitting rotation therethrough, a gear casing for housing gears of the speed reduction device is formed integrally with a rear gear bracket and a stator frame, so that the number of working steps are reduced and alignment of the gears is enhanced with high accuracy. Further, an opening portion is provided on an outer circumference of the gear casing through which the gears can be installed with ease of assembly.

Abstract: A vapor pressure relief system comprising a safety valve and vent pipe movable with thermal expansion and contraction of the associated vapor generator, and a fixed exhaust pipe and drip pan, the latter having an opening to admit the vent pipe and accommodate the movement thereof, and including slidable cover plates surrounding the vent pipe and providing a closure over the drip pan opening.