Abstract: An electrical device such as a power control apparatus comprises a case and at least one electrical component accommodated in the case. The case has a flow path for a cooling fluid. The flow path is formed between a bottom portion and a cover. The flow path is elongated generally along a U shape. The bottom portion and the cover are joined by welding. The cover is formed with protruding portions protruding into the flow path. The protruding portions have shapes to reduce stress concentration on welding portions. A stress caused by a pressure of the cooling fluid may acts on a distal end formed inside of the U shape in a concentration manner.

Abstract: [Problem] To provide a rotor unit that may effectively prevent detachment of a magnet with a holder while absorbing dimensional errors of a rotor main body and the magnet. [Solution] In the rotor unit according to the present invention, the holder mountable on the rotor main body prevents the magnet from being detached from the rotor main body. The holder includes an elastically deformable insertion arm extending from a flat-plate like holder main body, a hook portion provided on a free end side of the insertion arm, an elastically deformable magnet pressing arm extending from the holder main body, and a magnet pressing portion provided on a free end side of the magnet pressing arm. The rotor main body includes a hook hole into which the insertion arm is inserted, and the hook hole is provided with a locking portion in which the hook portion is lockable.

Abstract: An axial-flow fluid machine provided with: a retainer ring holding a stationary blade train; a casing supporting the retainer ring; and an eccentric pin. An engagement part of the casing has a protruding section protruding to the retainer ring side. An engagement part of the retainer ring has a pair of wall plate sections forming a groove into which the protruding section is put. In the casing, a penetration hole is formed extending in a radial direction so as to be centered about a penetration center position that is biased to an axial upstream side in a region of the casing where the engagement part is formed. In the engagement part of the casing, a portion on an axial downstream side relative to the penetration hole exists in the entire circumferential area. The eccentric pin is inserted into the penetration hole.

Abstract: Problem: To provide a sheet and a structural deformation-evaluating article comprising the same that allow for convenient and quantitative three-dimensional inspection of the deformation of an object. Resolution means: A sheet comprising a deformation-conforming section comprising a first pattern image, a deformation-non-conforming section comprising a second pattern image, and a deformation-mitigating section present between the deformation-conforming section and the deformation-non-conforming section, the first pattern image being visible through the second pattern image; and a structural deformation-evaluating article comprising the sheet are provided.

Abstract: A measuring jig includes: a base portion; a sensor holding portion disposed so as to protrude from the base portion and configured to hold a sensor; and a first protruding portion protruding from the base portion toward the same side as the sensor holding portion, at a first position different from a sensor position which is a position of a sensor installation surface on which the sensor extends, with respect to a direction orthogonal to the sensor installation surface.

Abstract: An axial-flow fluid machine provided with: a retainer ring holding a stationary blade train; a casing supporting the retainer ring; and an eccentric pin. An engagement part of the casing has a protruding section protruding to the retainer ring side. An engagement part of the retainer ring has a pair of wall plate sections forming a groove into which the protruding section is put. In the casing, a penetration hole is formed extending in a radial direction so as to be centered about a penetration center position that is biased to an axial upstream side in a region of the casing where the engagement part is formed. In the engagement part of the casing, a portion on an axial downstream side relative to the penetration hole exists in the entire circumferential area. The eccentric pin is inserted into the penetration hole.

Abstract: To provide a sheet and a system for curing concrete, in which the moisture amount to be used is small and which are able to reduce temporal and local variations in the moisture amount supplied to the concrete surface, a concrete curing method, and a method for producing a concrete structure. There is provided a concrete curing sheet of some embodiments of the present disclosure having a solid structure group on at least a first surface, the solid structure group having grooves defined between adjacent solid structures, and the grooves transporting water using the capillary phenomenon.

Abstract: A measuring jig includes: a base portion; a sensor holding portion disposed so as to protrude from the base portion and configured to hold a sensor; and a first protruding portion protruding from the base portion toward the same side as the sensor holding portion, at a first position different from a sensor position which is a position of a sensor installation surface on which the sensor extends, with respect to a direction orthogonal to the sensor installation surface.

Abstract: Problem: To provide a sheet and a structural deformation-evaluating article comprising the same that allow for convenient and quantitative three-dimensional inspection of the deformation of an object. Resolution means: A sheet comprising a deformation-conforming section comprising a first pattern image, a deformation-non-conforming section comprising a second pattern image, and a deformation-mitigating section present between the deformation-conforming section and the deformation-non-conforming section, the first pattern image being visible through the second pattern image; and a structural deformation-evaluating article comprising the sheet are provided.

Abstract: A rotating shaft lifting jig is inserted between a rotating shaft of a rotary machine and a bearing stand surrounding the outer periphery of at least a lower part of the rotating shaft. The jig for lifting the rotating shaft includes: a pedestal which is supported on an inner peripheral surface of the bearing stand; and a jack part which is disposed between the pedestal and the outer peripheral surface of the rotating shaft and extends/contracts in the radial direction. The radial dimension of the pedestal is smaller than a radial clearance between the rotating shaft and the bearing stand. A rotor receiver having a cylindrical surface conforming to the outer peripheral surface of the rotating shaft is provided between the jack part and the rotating shaft. The rotor receiver is provided with a plurality of support members in directions different from the direction of the jack part.

Abstract: To provide a sheet and a system for curing concrete, in which the moisture amount to be used is small and which are able to reduce temporal and local variations in the moisture amount supplied to the concrete surface, a concrete curing method, and a method for producing a concrete structure. There is provided a concrete curing sheet of some embodiments of the present disclosure having a solid structure group on at least a first surface, the solid structure group having grooves defined between adjacent solid structures, and the grooves transporting water using the capillary phenomenon.

Abstract: An inner wall surface of a low-pressure-side side plate opposite to a lateral surface of a thin plate is formed along a direction crossing an axial direction of a rotating shaft such that a gap between the inner wall surface and the thin plate gradually decreases from a radially inner side toward a radially outer side of the low-pressure-side side plate.

Abstract: A process including brazing a first plate-like member formed from a heat-resistant alloy, and a second plate-like member formed from a heat-resistant alloy and having fins on the surface, with the fins facing the first plate-like member, by interposing a brazing filler metal comprising a melting point lowering element between the two plate-like members, molding the plate-like assembly to form a combustor structural member, identifying, in accordance with the shape of the combustor structural member, strain locations where the strain generated during the press molding step exceeds a predetermined value, performing localized heating of the locations within the plate-like assembly corresponding with the strain locations identified, and as the above press molding step subjecting the plate-like assembly to cold press molding with the temperature of the heated locations corresponding with the strain locations maintained at a desired temperature.

Abstract: A rotating shaft lifting jig is inserted between a rotating shaft of a rotary machine and a bearing stand surrounding the outer periphery of at least a lower part of the rotating shaft. The jig for lifting the rotating shaft includes: a pedestal which is supported on an inner peripheral surface of the bearing stand; and a jack part which is disposed between the pedestal and the outer peripheral surface of the rotating shaft and extends/contracts in the radial direction. The radial dimension of the pedestal is smaller than a radial clearance between the rotating shaft and the bearing stand. A rotor receiver having a cylindrical surface conforming to the outer peripheral surface of the rotating shaft is provided between the jack part and the rotating shaft. The rotor receiver is provided with a plurality of support members in directions different from the direction of the jack part.

Abstract: In a gas turbine of the invention, a first blade ring portion to which first vanes are attached and a second blade ring portion to which second vanes are attached are integrally formed to form an integrated blade ring. A second upstream pressing member is arranged on the upstream side of a second upstream isolation ring which attaches a first ring segment and a second vane stage which is arranged on the downstream side of the first ring segment to the integrated blade ring. By attaching the pressing member to the blade ring portion, the pressing member pushes and fixes the isolation ring to the downstream side, and the sealing performance of a packing is maintained.

Abstract: A plate-like-object manufacturing method, plate-like objects, a gas-turbine combustor, and a gas turbine, in which degradation in the cooling performance can be suppressed, the time required for manufacturing a gas-turbine combustor can be shortened, and deterioration of the working environment can be prevented are provided. A plate-like-object manufacturing method includes a step of forming a plate-like object by stacking a plurality of plates and arranging a plurality of channels, through which a cooling medium flows, side-by-side between the plurality of plates; and a step of arranging a plurality of the plate-like objects side-by-side in a direction in which the channels are arranged, butting the plurality of plate-like objects against each other, and performing welding at an abutment section. The channels adjacent to the abutment section extend along the abutment section and have a greater dimension in the direction in which the channels are arranged, as compared with that of other channels.

Abstract: A thermal spraying method includes forming a coating layer of heat resistant resin on the whole spray area of the metal surface, securely fixing a test piece of the same material as that of the metal as a constituent of heat resistant equipment on the surface of the coating layer, spraying a heat shield coating material onto the test piece, detaching the test piece from the surface of the coating layer, inspecting the condition of spray and setting spray conditions, removing the coating layer and, under the above set spray conditions, spraying the heat shield coating material onto the metal surface to thereby form a heat shield coating layer.

Abstract: An inner wall surface of a low-pressure-side side plate opposite to a lateral surface of a thin plats is formed along a direction crossing an axial direction of a rotating shaft such that a gap between the inner wall surface and the thin plate gradually decreases from a radially inner side toward a radially outer side of the low-pressure-side side plate.

Abstract: Provided is a vane tip clearance management structure for a gas turbine which allows a vane tip clearance to be confirmed easily at the time of completing assembly. For this purpose, there are provided: a casing (3) rotatably supporting a rotor (2); stator vane retainer rings (11, 12, and 13) and a turbine vane ring (16) provided to have predetermined clearances from tips of rotor vanes (10 and 15) fitted in multiple steps to the rotor (2) inside in the radial direction of the casing (3); guide frames (26) penetrating the casing (3), the stator vane retainer rings (11, 12, and 13) and the turbine vane ring (16) in the radial direction and being supported by stepped portions (21a, 22a, 23a, and 24a); and rods (25) movably supported by the guide frames (26) and abutting on the tips of the rotor vanes (10 and 15). Clearances (C1 and C2) are measured based on the amounts of movement of the rods (25) relative to the guide frames (26).

Abstract: A turbine vane of the invention includes: a plurality of outer shrouds (8a) that are provided along the turbine circumferential direction so as to be adjacent to each other and form an outer wall of a main passageway; inner shrouds (8b) that form an inner wall; a airfoil body (8c) that protrudes from a front surface of the inner shroud (8b) and defines a flow of combustion gas directed from the upstream side of the main passageway toward the downstream side thereof; and a retainer (8d) which protrudes from a rear surface of the inner shroud (8b) and extends along the turbine circumferential direction, wherein the retainer (8d) is disposed on the downstream side in relation to an intersection point (Q) between a dividing gap (K1) of the adjacent inner shrouds (8b) and a throat line (P) which connects the contact points of a minimal inscribed circle according to the blade shapes of the adjacent airfoil bodies (8c).