Abstract: An electronic device includes a battery pack, a charging circuit that charges the battery pack, a load device that operates with a power of the battery pack, a voltage sensor that detects a charge voltage and a discharge voltage of the battery pack, a current sensor that detects a charge current and a discharge current of the battery pack, and a control circuit. The control circuit calculates an internal resistance of the battery pack based on the charge voltage and the charge current, calculates an allowable power indicating a maximum power that is able to be acquired from the battery pack by the load device based on the discharge voltage, the discharge current, and the internal resistance, and sends a control signal to the load device to cause the load device to operate with a power less than or equal to the allowable power.

Abstract: A complementary transistor is constituted of a first transistor TR1 and a second transistor TR2, active regions 32, 42 of the respective transistors are formed by layering first A layers 33, 43 and the first B layers 35, 45 respectively, surface regions 201, 202 provided in a base correspond to first A layers 33, 43 respectively, first B layers 35, 45 each have a conductivity type different from that of the first A layers 33, 43, and extension layers 36, 46 of the first B layer are provided on insulation regions 211,212 respectively.

Abstract: A sealing device according to at least one embodiment includes not less than three arc-shaped fins arranged in an axial direction. The arc-shaped fins include: a first fin which is one of two outermost fins located on an outermost side in the axial direction; a second fin disposed adjacent to the first fin in the axial direction; and at least one third fin disposed opposite to the first fin across the second fin in the axial direction. It is preferable that the third fin is disposed to be inclined with respect to a radial direction such that a tip end portion is located on a side of the first fin in the axial direction relative to a base end portion, and the third fin has a larger inclination angle than the first fin or the second fin with respect to the radial direction.

Abstract: A steam turbine provided with: a rotor; a plurality of movable blades each of which has a movable blade body and a shroud, and which are circumferentially arranged at intervals; a casing that has a recessed section for accommodating the shroud; fins that form clearances from the outer circumferential surface of the shroud; a stator blade support part disposed on the downstream side of the recessed section; a plurality of stator blades circumferentially arranged at intervals; and an annular partition plate that extends from a recessed section downstream surface toward the upstream side thereof. The casing has formed therein a bypass flow passage that communicates a region radially outside of the partition plate and a region between the stator blades.

Abstract: A turbine includes a rotor including a rotation shaft that rotates around an axis and a blade row formed on an outer surface of the rotation shaft; a casing, which covers the rotor, has a casing inner surface being expanded radially outward approaching a downstream side of the casing in a direction of the axis; and an inner member body formed to line the casing inner surface of the casing such that an extraction port is formed between an upstream side end of the inner member body and the casing inner surface. A discharge port is formed between a downstream side end of the inner peripheral member body and the casing inner peripheral surface. The extraction port and the discharge port are formed in an annular shape centered on the axis. A flow path cross-sectional area of the discharge port is smaller than that of the extraction port.

Abstract: A rotating machine includes a rotating body rotatably supported in a casing; a rotor blade fixed to an outer peripheral portion of the rotating body; a stator blade arranged on a downstream side in a fluid flow direction with respect to the rotor blade and fixed to an inner peripheral portion of the casing; a sealing device arranged between the inner peripheral portion and a front end of the rotor blade; a swirling flow generation chamber provided in the casing on the downstream side from the sealing device along a circumferential direction of the rotating body; and guiding members provided in the swirling flow generation chamber along a radial direction of the rotating body and in the circumferential direction at predetermined intervals. The swirling flow generation chamber has a wall surface located on the downstream side from an edge of the stator blade on an upstream side.

Abstract: A rotating machine includes a casing having a hollow shape; a rotator rotatably supported in the casing; a stator blade fixed to an inner peripheral portion of the casing; a rotor blade fixed to an outer peripheral portion of the rotator while being displaced from the stator blade in an axial direction of the rotator; a sealing device disposed between the inner peripheral portion of the casing and a tip of the rotor blade; a swirling flow generation chamber provided along a circumferential direction of the rotator on a downstream side of the sealing device in the casing in a fluid flow direction; and guiding members provided at predetermined intervals in the swirling flow generation chamber in the circumferential direction of the rotator. The guiding members each include a first guiding surface that is inclined in the circumferential direction with respect to the axial direction of the rotator.

Abstract: A rotating machine includes a casing having a hollow shape; a rotator rotatably supported in the casing; a stator blade fixed to an inner peripheral portion of the casing; a rotor blade fixed to an outer peripheral portion of the rotator while being displaced from the stator blade in an axial direction of the rotator; a sealing device disposed between the inner peripheral portion of the casing and a tip of the rotor blade; a swirling flow generation chamber provided along a circumferential direction of the rotator on a downstream side of the sealing device in the casing in a fluid flow direction; and guiding members provided at predetermined intervals in the swirling flow generation chamber in the circumferential direction of the rotator. The guiding members each include a first guiding surface that is inclined in the circumferential direction with respect to the axial direction of the rotator.

Abstract: A turbine includes a rotor including a rotation shaft that rotates around an axis and a blade row formed on an outer surface of the rotation shaft; a casing, which covers the rotor, has a casing inner surface being expanded radially outward approaching a downstream side of the casing in a direction of the axis; and an inner member body formed to line the casing inner surface of the casing such that an extraction port is formed between an upstream side end of the inner member body and the casing inner surface. A discharge port is formed between a downstream side end of the inner peripheral member body and the casing inner peripheral surface. The extraction port and the discharge port are formed in an annular shape centered on the axis. A flow path cross-sectional area of the discharge port is smaller than that of the extraction port.

Abstract: An exhaust hood (Ec) of the present invention is provided with an inner casing (21), an outer casing (30), and a diffuser (26). The inner casing (21) surrounds a rotor from the outside in a radial direction, and forms a first space (21s) in which a fluid flows in an axial direction (Da) between the rotor and the inner casing (21). The diffuser (26) is provided with a bearing cone (29) that has a diameter that gradually widens moving towards an axial downstream side (Dad) and forms a cylindrical shape extending to the axial downstream side (Dad) to be continuous with the outer circumferential surface of a rotor shaft that forms the first space (21s).

Abstract: A sealing device according to at least one embodiment includes not less than three arc-shaped fins arranged in an axial direction. The arc-shaped fins include: a first fin which is one of two outermost fins located on an outermost side in the axial direction; a second fin disposed adjacent to the first fin in the axial direction; and at least one third fin disposed opposite to the first fin across the second fin in the axial direction. It is preferable that the third fin is disposed to be inclined with respect to a radial direction such that a tip end portion is located on a side of the first fin in the axial direction relative to a base end portion, and the third fin has a larger inclination angle than the first fin or the second fin with respect to the radial direction.

Abstract: A rotating machine includes a hollow casing; a rotating body rotatably supported in the casing; a stator blade fixed to an inner peripheral portion of the casing; a rotor blade fixed to an outer peripheral portion of the rotating body to be offset to the stator blade in an axial direction of the rotating body; a sealing device arranged between the inner peripheral portion and a tip of the rotor blade; a swirling flow generation chamber provided in the casing on a downstream side in a fluid flow direction from the sealing device along a circumferential direction of the rotating body; first guiding members provided in the swirling flow generation chamber along a radial direction and in a circumferential direction of the rotating body at predetermined intervals; and a second guiding member provided in the chamber along the circumferential direction while intersecting the first guiding members.

Abstract: A steam turbine provided with: a rotor; a plurality of movable blades each of which has a movable blade body and a shroud, and which are circumferentially arranged at intervals; a casing that has a recessed section for accommodating the shroud; fins that form clearances from the outer circumferential surface of the shroud; a stator blade support part disposed on the downstream side of the recessed section; a plurality of stator blades circumferentially arranged at intervals; and an annular partition plate that extends from a recessed section downstream surface toward the upstream side thereof. The casing has formed therein a bypass flow passage that communicates a region radially outside of the partition plate and a region between the stator blades.

Abstract: An exhaust chamber is equipped with: a diffuser that forms a diffuser space; an exhaust casing that forms an exhaust space communicating with the diffuser space; and an auxiliary exhaust frame that forms an auxiliary exhaust space having an annular shape centered around an axis, on the inside of the diffuser in the radial direction. The auxiliary exhaust frame has an opening that opens toward the outside in the radial direction from the interior of the auxiliary exhaust space, and that enables the exhaust space and the auxiliary exhaust space to communicate with each other.

Abstract: A rotating machine includes a casing having a hollow shape; a rotator rotatably supported in the casing; a stator blade fixed to an inner peripheral portion of the casing; a rotor blade fixed to an outer peripheral portion of the rotator while being displaced from the stator blade in an axial direction of the rotator; a sealing device disposed between the inner peripheral portion of the casing and a tip of the rotor blade; a swirling flow generation chamber provided along a circumferential direction of the rotator on a downstream side of the sealing device in the casing in a fluid flow direction; and guiding members provided at predetermined intervals in the swirling flow generation chamber in the circumferential direction of the rotator. The guiding members each include a first guiding surface that is inclined in the circumferential direction with respect to the axial direction of the rotator.

Abstract: A rotating machine includes a hollow casing; a rotating body rotatably supported in the casing; a stator blade fixed to an inner peripheral portion of the casing; a rotor blade fixed to an outer peripheral portion of the rotating body to be offset to the stator blade in an axial direction of the rotating body; a sealing device arranged between the inner peripheral portion and a tip of the rotor blade; a swirling flow generation chamber provided in the casing on a downstream side in a fluid flow direction from the sealing device along a circumferential direction of the rotating body; first guiding members provided in the swirling flow generation chamber along a radial direction and in a circumferential direction of the rotating body at predetermined intervals; and a second guiding member provided in the chamber along the circumferential direction while intersecting the first guiding members.

Abstract: A rotating machine includes a rotating body rotatably supported in a casing; a rotor blade fixed to an outer peripheral portion of the rotating body; a stator blade arranged on a downstream side in a fluid flow direction with respect to the rotor blade and fixed to an inner peripheral portion of the casing; a sealing device arranged between the inner peripheral portion and a front end of the rotor blade; a swirling flow generation chamber provided in the casing on the downstream side from the sealing device along a circumferential direction of the rotating body; and guiding members provided in the swirling flow generation chamber along a radial direction of the rotating body and in the circumferential direction at predetermined intervals. The swirling flow generation chamber has a wall surface located on the downstream side from an edge of the stator blade on an upstream side.

Abstract: An exhaust chamber is equipped with: a diffuser that forms a diffuser space; an exhaust casing that forms an exhaust space communicating with the diffuser space; and an auxiliary exhaust frame that forms an auxiliary exhaust space having an annular shape centered around an axis, on the inside of the diffuser in the radial direction. The auxiliary exhaust frame has an opening that opens toward the outside in the radial direction from the interior of the auxiliary exhaust space, and that enables the exhaust space and the auxiliary exhaust space to communicate with each other.

Abstract: In a rotating machine, a tip shroud of a rotor blade includes a plurality of shroud outer peripheral surfaces which are provided such that radial positions of the shroud outer peripheral surfaces are located stepwise radially outward from an upstream side toward a downstream side, and a step portion which connects adjacent shroud outer peripheral surfaces to each other. The step portion includes an acute angle-forming surface which extends toward the upstream side while extending toward a radially outer side and is connected to an upstream-side end portion of the shroud outer peripheral surface located on the downstream side with an acute angle ?1.

Abstract: A steam turbine exhaust chamber includes a casing and a bearing cone disposed in the casing. The casing has a recess provided along at least a part of a circumference of the casing on a radially outer side of a downstream end of the bearing cone and recessed downstream in an axial direction with respect to the downstream end of the bearing cone.