Abstract: A plurality of resistance-imparting portions (34A to 34E) are disposed adjacent to each other. A first contraction flow portion forming one of the resistance-imparting portions (34A to 34E) adjacent to each other is in communication with an enlarged diameter portion forming another resistance-imparting portion. First contraction flow portions (32AH to 32DH) forming the resistance-imparting portions (34A to 34E) adjacent to each other are disposed at different positions in a direction in which an outer frame member (31) extends.

Abstract: A spray nozzle and a deaerator each include an external cylinder provided with a plurality of jetting outlets on an outer circumference portion thereof, an inner cylinder that is supported inside the external cylinder so as to be movable in an axial center direction and is provided with a plurality of first communication holes capable of communicating with the jetting outlets, and an open-close valve that includes a shaft coupled to the inner cylinder and a valve body provided at a distal end portion of the shaft and capable of opening and closing a distal opening of the external cylinder. The spray nozzle and the deaerator thus structured provide improved performance by preventing an increase in pressure loss occurring regardless of a jet flow amount.

Abstract: A condenser includes a container into which steam is to flow, cooling pipes which are positioned inside the container and configured to cool the steam so as to form condensed water, at least one extraction pipe for extracting air included inside the container, at least one extraction hole which is defined in the extraction pipe and through which an interior of the at least one extraction pipe and an interior of the container communicate with each other, and a cylindrical cover which is configured with a gap spaced from the at least one extraction pipe and covers the at least one extraction hole so as to regulate an inflow of the condensed water into the at least one extraction hole. A plurality of the extraction holes are formed around the extraction pipe, and the cylindrical cover is radially outside the at least one extraction pipe with the gap spaced therebetween.

Abstract: A spray nozzle and a deaerator each include an external cylinder provided with a plurality of jetting outlets on an outer circumference portion thereof, an inner cylinder that is supported inside the external cylinder so as to be movable in an axial center direction and is provided with a plurality of first communication holes capable of communicating with the jetting outlets, and an open-close valve that includes a shaft coupled to the inner cylinder and a valve body provided at a distal end portion of the shaft and capable of opening and closing a distal opening of the external cylinder. The spray nozzle and the deaerator thus structured provide improved performance by preventing an increase in pressure loss occurring regardless of a jet flow amount.

Abstract: A laser oscillation cooling device (100) includes a light emitting section (1) that emits laser excitation light (Z1), a laser excitation section (2) that excites the laser excitation light (Z1) to emit laser light (Z2) and has a heat generating region (S) where heat is locally generated, a storage tank (3) capable of storing an extremely low temperature liquid (L), a pressurizing section (31) that brings the extremely low temperature liquid (L) into a sub-cool state by pressurizing the inside of the storage tank (3), and a jetting supply section (4) that removes heat from the laser excitation section (2) by jetting the extremely low temperature liquid (L) in the sub-cool state from a plurality of jet ports arrayed in a two-dimensional manner to the laser excitation section (2).

Abstract: A laser oscillation cooling device (100) includes a light emitting section (1) that emits laser excitation light (Z1), a laser excitation section (2) that excites the laser excitation light (Z1) to emit laser light (Z2) and has a heat generating region (S) where heat is locally generated, a storage tank (3) capable of storing an extremely low temperature liquid (L), a pressurizing section (31) that brings the extremely low temperature liquid (L) into a sub-cool state by pressurizing the inside of the storage tank (3), and a jetting supply section (4) that removes heat from the laser excitation section (2) by jetting the extremely low temperature liquid (L) in the sub-cool state from a plurality of jet ports arrayed in a two-dimensional manner to the laser excitation section (2).

Abstract: A laser oscillation cooling device (100) is provided with a light emitting section (1) that emits laser excitation light (Z1), a laser excitation section (2) that excites the laser excitation light (Z1) to emit laser light (Z2) and locally generates heat, a storage tank (3) capable of storing an extremely low temperature liquid (L), a pressurizing section (31) that brings extremely low temperature liquid (L) into a sub-cool state by pressurizing the inside of the storage tank (3), and a jetting supply section (4) that removes heat from the laser excitation section (2) by jetting the extremely low temperature liquid (L) in the sub-cool state to the laser excitation section (2).

Abstract: A laser-oscillation cooling device includes a laser excitation unit that excites a laser beam and locally emits heat, a storage tank that is capable of storing a cryogenic liquid at an atmospheric pressure and discharge the cryogenic liquid which is evaporated, a pressurization and supply unit that pressurizes the cryogenic liquid stored in the storage tank and supplies the pressurized cryogenic liquid to the laser excitation unit, and a decompression and return unit that decompresses the cryogenic liquid which is supplied to the laser excitation unit and used to cool the laser excitation unit and returns the cryogenic liquid to the storage tank.

Abstract: A laser oscillation cooling device (100) is provided with a light emitting section (1) that emits laser excitation light (Z1), a laser excitation section (2) that excites the laser excitation light (Z1) to emit laser light (Z2) and locally generates heat, a storage tank (3) capable of storing an extremely low temperature liquid (L), a pressurizing section (31) that brings extremely low temperature liquid (L) into a sub-cool state by pressurizing the inside of the storage tank (3), and a jetting supply section (4) that removes heat from the laser excitation section (2) by jetting the extremely low temperature liquid (L) in the sub-cool state to the laser excitation section (2).

Abstract: A steam turbine plant is provided with: a plurality of steam turbines; a multistage pressure condenser composed of a plurality of condensers which are respectively provided below the respective steam turbines so as to correspond to the plurality of steam turbines, and in which steam which is discharged from the respective steam turbines is condensed and accommodated as condensate; and a steam extraction section which introduces some of the steam in the steam turbine into condensate of the condenser corresponding to the lowest-pressure steam turbine among the plurality of condensers.

Abstract: A condenser of the present invention includes a container into which steam flows, cooling pipes which are provided inside the container and cool the steam to form condensed water, at least one extraction pipe for extracting air included inside the container, at least one extraction hole which is formed in the extraction pipe and through which an interior of the extraction pipe and an interior of the container communicate with each other, and a cylindrical cover which is provided with a predetermined gap spaced from the extraction pipe and covers the at least one extraction hole to regulate an inflow of the condensed water into the at least one extraction hole. A plurality of the extraction holes are formed around the extraction pipe, and the cylindrical cover is provided radially outside the extraction pipe with the predetermined gap spaced therebetween.

Abstract: A multistage pressure condenser includes, a high pressure chamber and a low pressure chamber, a pressure partition wall which partitions an inner portion of the low pressure chamber to an upper portion and a lower portion, a cooling pipe group which condenses low pressure side steam to low pressure side condensate, a reheat chamber positioned in the lower portion of the low pressure chamber and in which the low pressure side condensate which flows down through the porous plate is stored, high pressure side steam introduction portion for introducing high pressure side steam in the high pressure chamber to the reheat chamber, liquid-film forming portion which guides the low pressure side condensate which flows down through the porous plate to the reheat chamber while dispersing the low pressure side condensate on a surface, and air feeder for promoting the flow of the high pressure side steam.

Abstract: A laser-oscillation cooling device includes a laser excitation unit that excites a laser beam and locally emits heat, a storage tank that is capable of storing a cryogenic liquid at an atmospheric pressure and discharge the cryogenic liquid which is evaporated, a pressurization and supply unit that pressurizes the cryogenic liquid stored in the storage tank and supplies the pressurized cryogenic liquid to the laser excitation unit, and a decompression and return unit that decompresses the cryogenic liquid which is supplied to the laser excitation unit and used to cool the laser excitation unit and returns the cryogenic liquid to the storage tank.

Abstract: A steam turbine plant is provided with: a plurality of steam turbines; a multistage pressure condenser composed of a plurality of condensers which are respectively provided below the respective steam turbines so as to correspond to the plurality of steam turbines, and in which steam which is discharged from the respective steam turbines is condensed and accommodated as condensate; and a steam extraction section which introduces some of the steam in the steam turbine into condensate of the condenser corresponding to the lowest-pressure steam turbine among the plurality of condensers.

Abstract: A pressure bulkhead has a plurality of holes and divides a low-pressure chamber at low pressure in the vertical direction. A cooling-tube bank is located in an upper section of the low-pressure chamber and performs heat exchange with low-pressure steam guided to the low-pressure chamber by introducing coolant therein to condense the low-pressure steam to low-pressure steam condensate. A reheat chamber serves as a lower section of the low-pressure chamber and stores the low-pressure steam condensate falling from the holes in the pressure bulkhead. A high-pressure-steam introducing unit introduces high-pressure steam within a high-pressure chamber at high pressure to the reheat chamber. A plurality of plate members are parallel to each other below the pressure bulkhead and extend in a falling direction of the condensate falling from the holes in the pressure bulkhead.

Abstract: A pipe diameter expansion apparatus includes: a hollow cylindrical member that can be placed in a pipe filled with water, and through which a coolant medium having a lower temperature than a freezing point of the water flows from one end to the other end; at least two plate-like fins provided to protrude outward from the cylindrical member; and a cold-heat insulator that is provided between the two fins, and reduces cold-heat transmission between inside and outside the cylindrical member.

Abstract: A moisture separator where a corrugated plate 43 is provided with a collecting plate 49 formed to cover a flat portion 74 and an upstream end of a slope portion disposed on a downstream side of the flat portion 74. The collecting plate 74 has an opening which opens to an upstream side in the direction of the wet steam flow S1. The collecting plate 49 is fixed to the slope portion at a base end. Between the collecting plate 49 and a body portion of the corrugated plate, a pocket section 47 and a drain duct section 48 are formed. The moisture contained in the wet steam S1 turns into droplets and enters the pocket section 47 and the drain duct section 48 from the opening of the collecting plate 49 and falls down the pocket section 47 and the drain duct section 48 respectively by gravity.

Abstract: In a multi-stage steam-water separation device and a steam-water separator, a first swirl vane (6) which causes a gas-liquid two-phase flow to rise while swirling is provided in a first riser (5) of a first steam-water separator (2), and a second swirl vane (12) which causes the gas-liquid two-phase flow which has passed through the first swirl vane (6) to rise while swirling at a speed higher than that provided by the first swirl vane (6), is provided in a second riser (11).

Abstract: A pipe diameter expansion apparatus includes: a hollow cylindrical member that can be placed in a pipe filled with water, and through which a heat medium having a lower temperature than a freezing point of the water flows from one end to the other end; at least two plate-like fins provided to protrude outward from the cylindrical member; and a heat insulator that is provided between the two fins, and reduces heat transmission between inside and outside the cylindrical member.

Abstract: Disclosed is a basket 50 that is located within a basket containment vessel, into which a boric acid solution capable of dissolving a pH adjuster flows, and can allow a pH adjuster solution to flow out by the inflowing boric acid solution. The basket 50 includes a plurality of containment units 71 stacked in a vertical direction with a predetermined first space L1 therebetween. The pH adjuster can be stored in each of the containment units 71. Also disclosed is a pH adjusting device including the basket 50, the basket containment vessel in which the basket 50 can be contained and in which cooling water can be stored, and an overflow pipe that, within the basket containment vessel, allows the pH adjuster solution that is obtained from the pH adjuster dissolved in the cooling water to flow out.