A heater side channel blower includes a blower housing (12) with a bottom wall (14) and a circumferential wall (16), that enclose a first flow chamber in a housing interior (18). A ring-shaped delivery duct (22), open towards an outer side of the blower housing (12), is provided at the bottom wall (14). A flow medium inlet (50), for the entry of medium to be delivered into the housing interior (18), is open towards the first flow chamber. A second flow chamber (42) is provided in the housing interior (18). A flow medium outlet (52), for the discharge of medium to be delivered from the housing interior (18), is open towards the delivery duct (22) to the second flow chamber (42). The first flow chamber is separated from the second flow chamber (42) by at least one chamber separation element (60, 62) that is permeable to medium to be delivered.

The present disclosure relates to a flow turning system for imparting a rotational, swirling motion to a fluid flowing through the flow turning system. The system may comprise a housing and a flow turning element supported within the housing. The flow turning element may have a plurality of circumferentially spaced vanes projecting into a flow path of the fluid as the fluid flows through the flow turning system. The vanes impart a swirling, circumferential flow to the fluid to help prevent contaminants in the fluid from adhering to downstream components in communication with the flow turning system.

Exhaust ducting for a gas turbine engine includes a lower plenum, an upper plenum, an exhaust fume isolator, and an inner duct seal positioned between the upper plenum and the exhaust fume isolator. The lower plenum is in flow communication with an exhaust collector of the gas turbine engine. The upper plenum is adjacent and in flow communication with the lower plenum. The exhaust fume isolator includes an isolation chamber and mixed exhaust ducting. The isolation chamber is adjacent the upper plenum and in flow communication with the enclosure. The mixed exhaust ducting is in flow communication with the isolation chamber and extends from the isolation chamber to the enclosure exhaust.

Exhaust ducting for a gas turbine engine includes a lower plenum, an upper plenum, an exhaust fume isolator, and an inner duct seal positioned between the upper plenum and the exhaust fume isolator. The lower plenum is in flow communication with an exhaust collector of the gas turbine engine. The upper plenum is adjacent and in flow communication with the lower plenum. The exhaust fume isolator includes an isolation chamber and mixed exhaust ducting. The isolation chamber is adjacent the upper plenum and in flow communication with the enclosure. The mixed exhaust ducting is in flow communication with the isolation chamber and extends from the isolation chamber to the enclosure exhaust.

A rotor system has a rotor, an axis of rotation about which the rotor may be rotated, a linkage system having a first adjustable length portion and a second adjustable length portion, wherein the second adjustable length portion is configured to provide a relatively finer adjustment of an overall effective length of the linkage system as compared to the first adjustable length portion and wherein the rotor is configured to rotate about the axis in response to changing the overall effective length of the linkage system.

A multi-stage axial compressor with an inner wall including a step portion for each of the compressor stages. Each step portion is defined along a respective stage. Each step portion may extend over at least a majority of an axial length of the stage. Each step portion may optionally include a point aligned with a maximum thickness of the airfoil portions of the rotor blades and a point aligned with a maximum thickness of the stator vanes. Adjacent step portions are connected by a transition portion converging toward a central axis of the compressor from the upstream step to the downstream step. Each transition portion has a steeper slope than that of the adjacent step portions. A method of directing flow through a multi-stage axial flow compressor is also discussed.

The steam valve driving apparatus according to an embodiment is a steam valve driving apparatus regulating open and close position of a valve body. The steam valve driving apparatus includes: a plurality of hydraulic cylinders that presses the valve body in an opening direction. Each of the hydraulic cylinders includes: a piston rod extending outward from a piston in the opening direction; and an open-side cylinder chamber arranged in the opposite side of the piston with respect to the piston and to which hydraulic oil is supplied. The hydraulic cylinder is disposed on a side opposite to the valve body with respect to a closing spring pressing the valve body in a closing direction.

The steam valve driving apparatus according to an embodiment is a steam valve driving apparatus regulating open and close position of a valve body. The steam valve driving apparatus includes: a plurality of hydraulic cylinders that presses the valve body in an opening direction. Each of the hydraulic cylinders includes: a piston rod extending outward from a piston in the opening direction; and an open-side cylinder chamber arranged in the opposite side of the piston with respect to the piston and to which hydraulic oil is supplied. The hydraulic cylinder is disposed on a side opposite to the valve body with respect to a closing spring pressing the valve body in a closing direction.

One embodiment of a power-generation system includes a convergent-divergent (“con-di”) nozzle, a compressor coupled to the con-di nozzle and adapted to motivate a flow of gas to exit the con-di nozzle, and a kinetic turbine situated to be excited by the flow of gas exiting the turbine, thereby enabling a generation of power from the excitation of the turbine. A method of power generation includes directing a flow of gas through a convergent-divergent nozzle at a speed greater than the speed of sound and causing a turbine to rotate in response to the flow of gas, thereby generating power from the rotating turbine.

Disclosed is a fan frame. The fan frame includes a frame body, a PIN body embedded in the frame body, and an outlet body connected to one end of the PIN body; and an accommodation cavity is provided in the frame body, the PIN body is embedded in the accommodation cavity, and the other end of the PIN body is connected to a circuit board. By designing the fan frame, automatic assembly on the circuit board is facilitated, connection to a test fixture is convenient, manually connecting the wires one by one for tests is avoided, and automatic tests, and simple, convenient and quick operation are achieved.