Abstract: A sheet folding apparatus includes: a conveying roller conveying a sheet in a predetermined conveying direction; a folding roller pair disposed downstream of the conveying roller in the conveying direction and rotating while nipping a predetermined position of the sheet to form a fold; a conveying path for conveying the sheet in the conveying direction from the conveying roller to the folding roller pair; an abutting member moving downstream in the conveying direction and abutting against the predetermined position of the sheet to bend the sheet downstream; and a loop space where the sheet is bent between the conveying roller and folding roller pair in a direction crossing the conveying direction. The folding roller pair stops while nipping a front end of the sheet fed from to form a loop of the sheet in the loop space, and the abutting member moves to abut against the loop.

Abstract: The present invention is to provide an image forming system including a sheet folding processing apparatus and a sheet pressing apparatus capable of performing additional folding processing without decreasing productivity. The sheet pressing apparatus of the present invention includes a pressing roller including a pressing surface configured to press a fold line part of a folding processed sheet conveyed from a carry-in port in a thickness direction of the sheet and a guide portion configured to guide the folding processed sheet so that the fold line part is positioned at the pressing surface, a nipping member configured to nip the fold line part between the pressing surface and the nipping member, a first moving unit configured to move the pressing roller to a nipping position at which the fold line part is nipped between the nipping member and the pressing roller and a retracting position.

Abstract: According to an embodiment, a turbine stator blade disposed in a working fluid flow path in a casing of a gas turbine, includes: a blade effective part disposed in the working fluid flow path; an outer circumferential sidewall having a plate-shaped part that is connected to a radially outer end portion of the blade effective part, and hooks each extending radially outward and circumferentially from the plate-shaped part and having a tip engaged with the casing; and an inner circumferential sidewall connected to a radially inner end portion of the blade effective part. At least one slit is formed at the rear hook or front hook to divide the hook in a circumferential direction, and the hook has a seal member to seal the slit.

Abstract: The invention provides a CO2 turbine power generation system that can be easily prevented from reaching an overspeed condition. A CO2 turbine power generation system of an embodiment includes a CO2 medium shutoff valve installed in a medium flow path between a regenerative heat exchanger and a combustor. When load rejection is to be performed, the CO2 medium shutoff valve closes to shut off the supply of the medium from the regenerative heat exchanger to the combustor.

Abstract: In a sheet folding apparatus for folding a sheet, a sheet is pushed at a predetermined position thereof by a push member while the sheet is being conveyed by a conveyance roller. The predetermined position of the sheet is guided to the nip section of a folding roller pair. Then, the sheet is nipped at the predetermined position thereof and folded by the folding roller pair.

Abstract: The steam turbine of an embodiment has: an outer casing; an inner casing housed in the outer casing; a turbine rotor penetrating the inner casing and the outer casing; and a support beam provided in the outer casing, extending in an axial direction of the turbine rotor, and supporting the inner casing, and is disposed on a foundation. The outer casing has outer casing support portions provided in both end portions of the outer casing in the axial direction of the turbine rotor and supported by the foundation. The support beam has beam end portions provided in both end portions in the axial direction of the turbine rotor. The outer casing support portion has a support surface supporting the beam end portion. Further, the outer casing includes a height adjustment mechanism capable of accessing the beam end portion from the outside of the outer casing.

Abstract: According to an embodiment, a turbine stator blade disposed in a working fluid flow path in a casing of a gas turbine, comprises: a blade effective part disposed in the working fluid flow path; an outer ring sidewall having a plate-shaped portion connecting to a radially outer end portion of the blade effective part, a front hook extending radially outward and circumferentially from the plate-shaped portion and having a tip fitting with the casing, a rear hook extending radially outward and circumferentially from the plate-shaped portion and having a tip fitting with the casing; and a reinforcing member that maintains an interval between the front hook and the rear hook; and an inner ring sidewall connected to a radially inner end portion of the blade effective part.

Abstract: There is provided an axial flow turbine capable of realizing a reduction in gland leakage amount. The axial flow turbine in an embodiment is of a single flow type and includes an upstream-side gland part located on an upstream side of a working medium in an axial direction of a turbine rotor and a downstream-side gland part located on a downstream side of the working medium in the axial direction of the turbine rotor. The axial flow turbine is configured such that a cooling medium lower in temperature and higher in pressure than the working medium is extracted in a middle of flowing from the inside to the outside of the turbine casing in the upstream-side gland part, and the extracted cooling medium is introduced into the stationary blade.

Abstract: There is provided a turbine in which a sufficient measure against windage loss can be executed. In a turbine of an embodiment, a cooling medium higher in pressure and lower in temperature than a working medium is introduced to the inside from the outside of a turbine casing. Here, in at least a turbine stage of an exhaust stage, the cooling medium passes through a stator blade and thereafter passes through a flow path present between rotor blades and a rotor wheel to flow to an exhaust-stage wheel space.

Abstract: An axial flow turbine of an embodiment includes: a turbine rotor provided to penetrate in an inner casing; rotor wheels formed on an outer peripheral surface of the turbine rotor in an axial direction; a gland seal part which is provided on a downstream side of the rotor wheel at a final stage and seals between the turbine rotor and the inner casing; a seal part which is provided between the rotor wheel at the final stage and the gland seal part and prevents inflow to the turbine rotor side of a working fluid; and a cooling medium supply mechanism which supplies a cooling medium directly to a wheel space surrounded by the rotor wheel at the final stage, the turbine rotor, the gland seal part and the seal part.

Abstract: Provided is a sheet folding apparatus for folding sheets, including: a feeding-roller pair; a loop-forming space provided downstream from the feeding-roller pair, for forming a sheet loop; a pushing member for pushing the looped sheet; a folding-roller pair for nipping a prescribed part of the sheet pushed by the pushing member, thereby to fold the sheet; and a path provided between the feeding-roller pair and the folding-roller pair, for guiding the sheet fed from the feeding-roller pair toward the loop-forming space.

Abstract: Shaft stability is enhanced and reliability is improved. In a gas turbine power generation system of an embodiment, a pressurizing unit, a rotation control unit, a diaphragm coupling, a turbine, and a generator are disposed to line up sequentially on the same shaft. A thrust bearing is provided between the turbine and the generator. The turbine is configured such that a working medium flows from the diaphragm coupling side toward the rotation control unit side.

Abstract: According to an embodiment, a turbine comprises: a casing; a rotor shaft; turbine stages; a thrust bearing which receives thrust load in the axial direction generated by a flow of a working fluid supplied to the turbine stages; a balance piston which is formed on the rotor shaft along a circumferential direction and projects in a radial direction from the rotor shaft, for adjusting a thrust contact pressure; and a thrust load adjusting mechanism which applies pressures of a pressure-increasing side and a pressure-decreasing side to at least one of a balance piston inner-side chamber and a balance piston outer-side chamber which sandwich the balance piston in the axial direction.

Abstract: In order to miniaturize an image forming system, the present invention provides an image forming system which is provided with a sheet feed apparatus including a transport roller pair capable of transporting a sheet in a sheet transport direction S, and an image forming apparatus including an image forming section capable of forming an image on the sheet acquired from the sheet feed apparatus, including a switch member disposed on the downstream side of the transport roller pair in the sheet transport direction to be switched between a first position for guiding the sheet transported by the transport roller pair to the image forming apparatus, and a second position for guiding the sheet transported by the transport roller pair downward, and a storage tray disposed below the switch member predetermined space apart to be able to store the sheet guided to below the switch member positioned in the second position.

Abstract: There is provided a turbine casing capable of easily realizing improvement of reliability regarding a connection with an exhaust pipe. A turbine casing according to an embodiment includes an exhaust pipe connecting part formed of ferritic heat resistant steel, to which an exhaust pipe formed of austenitic heat resistant steel is connected. Here, the exhaust pipe connecting part and the exhaust pipe are fastened by using screws.

Abstract: The steam turbine of an embodiment has: an outer casing; an inner casing housed in the outer casing; a turbine rotor penetrating the inner casing and the outer casing; and a support beam provided in the outer casing, extending in an axial direction of the turbine rotor, and supporting the inner casing, and is disposed on a foundation. The outer casing has outer casing support portions provided in both end portions of the outer casing in the axial direction of the turbine rotor and supported by the foundation. The support beam has beam end portions provided in both end portions in the axial direction of the turbine rotor. The outer casing support portion has a support surface supporting the beam end portion. Further, the outer casing includes a height adjustment mechanism capable of accessing the beam end portion from the outside of the outer casing.

Abstract: A turbine rotor of an embodiment includes a rotor body portion having turbine discs in plural stages in an axial direction protruding radially outside from an outer peripheral surface of the rotor body portion over a circumferential direction. The turbine rotor includes a plurality of axial passages, through which a cooling medium flows, formed at the rotor body portion radially outside than a center axis of the turbine rotor and radially inside than an outer peripheral surface of the rotor body portion in the axial direction; an introduction passage introducing the cooling medium into each of the axial passages; and discharge passages that penetrate from each of the axial passages to the outer peripheral surface of the rotor body portion to discharge the cooling medium.

Abstract: An exhaust hood in an embodiment includes: an outer casing; and an annular diffuser which is provided on a downstream side of a final turbine stage and formed by a cylindrical steam guide and a cylindrical bearing cone provided inside the steam guide. The steam guide includes a curved guide and a flat-plate guide which is provided on a downstream side of the curved guide. When a cross section of the outer casing vertical to the rotation axis of the turbine rotor is viewed from the downstream side of the steam guide, expansion outward in the radial direction of the flat-plate guide is set based on D/H where a distance between the rotation axis of the turbine rotor and an inner surface of the outer casing is H and a distance between the rotation axis of the turbine rotor and a downstream end of the flat-plate guide is D.

Abstract: A steam turbine 1 of one embodiment has a side exhaust structure where a condenser 190 is installed at one side in directions perpendicular and horizontal to an axial direction of a turbine rotor 40 and supported on a foundation 70. The steam turbine 1 includes an outer casing 10 having an outer casing upper half 12 and an outer casing lower half 13; a groove part 100 formed in each of a pair of lower half end plates 17 extending perpendicular to the axial direction of the turbine rotor 40, the groove part 100 being opened upward and being recessed to an inside of the outer casing 10; and a block-shaped key member 120 fitted to both the groove parts 100 and 110, a groove part 110 being formed at a part of the foundation 70 facing the groove part 100, the groove part 110 being opened upward.

Abstract: An axial flow turbine according to an embodiment includes: an outer casing; an inner casing provided inside the outer casing; a discharge pipe that is welded and joined to the outer casing and through which a working fluid discharged from the axial flow turbine flows; a sleeve that is provided inside the outer casing and the discharge pipe and guides the working fluid discharged from the axial flow turbine to the discharge pipe; a tubular member that is provided over an outer periphery of the sleeve inside the outer casing and the discharge pipe and covers an inner periphery side of a joint portion between the outer casing and the discharge pipe; an introduction port that introduces a cooling medium into a space demarcated by the outer casing, the discharge pipe, and the tubular member; and a discharge port that discharges the cooling medium introduced into the space.