Abstract: A fuel gas heater includes a container; a gas inflow chamber defined in one end of the container and having a gas inlet; a gas outflow chamber defined in the one end and having a gas outlet; U-shaped heat transfer pipes disposed inside the container, the pipes each having one end communicating with the gas inflow chamber and another end communicating with the gas outflow chamber; a heating medium supply port; a heating medium discharge port; a gas inflow opening disposed to face positions at which the pipes communicate with the gas inflow chamber; a gas inflow lid that enables the gas inflow opening to be opened and closed; a gas outflow opening disposed to face positions at which the pipes communicate with the gas outflow chamber; and a gas outflow lid that enables the gas outflow opening to be opened and closed.

Abstract: A fuel gas heater includes a container; a gas inflow chamber defined in one end of the container and having a gas inlet; a gas outflow chamber defined in the one end and having a gas outlet; U-shaped heat transfer pipes disposed inside the container, the pipes each having one end communicating with the gas inflow chamber and another end communicating with the gas outflow chamber; a heating medium supply port; a heating medium discharge port; a gas inflow opening disposed to face positions at which the pipes communicate with the gas inflow chamber; a gas inflow lid that enables the gas inflow opening to be opened and closed; a gas outflow opening disposed to face positions at which the pipes communicate with the gas outflow chamber; and a gas outflow lid that enables the gas outflow opening to be opened and closed

Abstract: A condenser includes heat transfer pipe groups, a main body and an intermediate body. The intermediate body has an inlet that opens in a horizontal direction, and an outlet that opens downward. The main body has an inlet that opens upward and is connected to the intermediate body outlet. The heat transfer pipe groups are arranged in the horizontal direction and disposed in the main body. A near-side outlet edge is an edge of the intermediate body outlet on a side near the intermediate body inlet in the horizontal direction and a far-side outlet edge is an edge of the intermediate body outlet on a side far from the intermediate body inlet. At least one part of the main body is located below an imaginary line that connects the near-side and far-side outlet edges and at least one part of the main body is located above the imaginary line.

Abstract: A U-tube heat exchanger wherein a tube support plate divides the interior of a tube-exterior fluid chamber into a curved-tube chamber on a second end side including curved-tube sections of the U-tubes, and a chamber on a first end side. A second partition wall divides the interior of the chamber on the first end side inside the tube-exterior fluid chamber into a first straight-tube chamber including inlet-side straight-tube sections of the U-tubes, and a second straight-tube chamber including outlet-side straight-tube sections of the U-tubes. An opening penetrating from the first straight-tube chamber into the second straight-tube chamber is formed in the second partition wall. First passage holes, which penetrate from the first straight-tube chamber into the curved-tube chamber, and second passage holes, which penetrate from the second straight-tube chamber into the curved-tube chamber, are formed in the tube support plate.

Abstract: A condenser includes a plurality of heat transfer pipe groups, a main body and an intermediate body. The intermediate body has an intermediate body inlet that opens from the inside in a horizontal direction, and an intermediate body outlet that opens downward from the inside. The main body has a main body inlet that opens upward from the inside and is connected to the intermediate body outlet. The plurality of heat transfer pipe groups are arranged in the horizontal direction and disposed in the main body. A near-side outlet edge that is an edge of the intermediate body outlet on a side near the intermediate body inlet in the horizontal direction is disposed below the uppermost position among the plurality of heat transfer pipe groups.

Abstract: A U-tube heat exchanger wherein a tube support plate divides the interior of a tube-exterior fluid chamber into a curved-tube chamber on a second end side including curved-tube sections of the U-tubes, and a chamber on a first end side. A second partition wall divides the interior of the chamber on the first end side inside the tube-exterior fluid chamber into a first straight-tube chamber including inlet-side straight-tube sections of the U-tubes, and a second straight-tube chamber including outlet-side straight-tube sections of the U-tubes. An opening penetrating from the first straight-tube chamber into the second straight-tube chamber is formed in the second partition wall. First passage holes, which penetrate from the first straight-tube chamber into the curved-tube chamber, and second passage holes, which penetrate from the second straight-tube chamber into the curved-tube chamber, are formed in the tube support plate.

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: This fuel-preheating device is provided with the following: a cooling-steam line that supplies steam, for the purposes of cooling, to a hot part of a gas turbine, namely a combustion liner of a combustor; a superheated-steam line through which superheated steam that is steam having passed through the combustion liner of the combustor flows; and a preheater that receives the superheated steam from the superheated-steam line and preheats fuel to be supplied to the combustor by exchanging heat between the superheated steam and said fuel.

Abstract: An intake air cooling system 100 for a gas turbine 18 is provided with: an intake duct 12 for leading intake air taken in from an intake-air inlet 22 to a compressor 14 of the gas turbine; a cooling part provided in the intake duct and configured to cool the intake air by heat exchange with a cooling medium which is introduced from an outside; a protruding step part 13 formed in a convex shape protruding from bottom surfaces 12a1, 12a2 of the intake duct disposed on a downstream side of the cooling part; and at least one drain hole 110 formed in the bottom surfaces 12a1, 12a2 of the intake duct disposed on the downstream side of the cooling part so as to discharge drain water, generated on a surface of the cooling part and dropping from the surface, to an outside of the intake duct.

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: An intake air cooling system 100 for a gas turbine 18 is provided with: an intake duct 12 for leading intake air from an intake-air inlet 22 to a compressor 14 of the gas turbine, the intake duct having a vertical duct 12c and a manifold part 12d disposed on a downstream side of the vertical duct; a cooling part 26 provided in the intake duct to cool the intake air by heat exchange with a cooling medium which is introduced from an outside; a filter part 42 provided on an inlet side of the manifold part to remove impurities contained in the intake air introduced through the vertical duct; and a drain catcher 110 constituted by a gutter member provided immediately above the filter part along inner wall surfaces 12c1, 12c2 of the vertical duct, the drain catcher being configured to collect drain water flowing along the inner wall surfaces of the vertical duct.

Abstract: This condenser is provided with the following: a set of heat-transfer tubes; a main body that covers the heat-transfer tubes; an intermediate body that forms a primary steam passage for guiding exhaust steam from a steam turbine to the set of heat-transfer tubes; and a bypass steam receiving section that receives bypass steam, i.e. steam that has bypassed the steam turbine, and guides the bypass steam to the set of heat-transfer tubes. The bypass steam receiving section is located outside the primary steam passage, and an opening in the main body that is opposite to the bypass steam receiving section is formed at a position where the bypass steam flows into the set of heat-transfer tubes mainly from a region different from an inflow region through which the exhaust steam mainly flows into the set of heat-transfer tubes via the primary steam passage.

Abstract: This fuel-preheating device is provided with the following: a cooling-steam line that supplies steam, for the purposes of cooling, to a hot part of a gas turbine, namely a combustion liner of a combustor; a superheated-steam line through which superheated steam that is steam having passed through the combustion liner of the combustor flows; and a preheater that receives the superheated steam from the superheated-steam line and preheats fuel to be supplied to the combustor by exchanging heat between the superheated steam and said fuel.

Abstract: An intake air cooling system 100 for a gas turbine 18 is provided with: an intake duct 12 for leading intake air from an intake-air inlet 22 to a compressor 14 of the gas turbine, the intake duct having a vertical duct 12c and a manifold part 12d disposed on a downstream side of the vertical duct; a cooling part 26 provided in the intake duct to cool the intake air by heat exchange with a cooling medium which is introduced from an outside; a filter part 42 provided on an inlet side of the manifold part to remove impurities contained in the intake air introduced through the vertical duct; and a drain catcher 110 constituted by a gutter member provided immediately above the filter part along inner wall surfaces 12c1, 12c2 of the vertical duct, the drain catcher being configured to collect drain water flowing along the inner wall surfaces of the vertical duct.

Abstract: An intake air cooling system 100 for a gas turbine 18 is provided with: an intake duct 12 for leading intake air taken in from an intake-air inlet 22 to a compressor 14 of the gas turbine; a cooling part provided in the intake duct and configured to cool the intake air by heat exchange with a cooling medium which is introduced from an outside; a protruding step part 13 formed in a convex shape protruding from bottom surfaces 12a1, 12a2 of the intake duct disposed on a downstream side of the cooling part; and at least one drain hole 110 formed in the bottom surfaces 12a1, 12a2 of the intake duct disposed on the downstream side of the cooling part so as to discharge drain water, generated on a surface of the cooling part and dropping from the surface, to an outside of the intake duct.

Abstract: An intake air cooling system 100 for a gas turbine 18 is provided with: an intake duct 12 for leading intake air taken in from an intake-air inlet 22 to a compressor 14 of the gas turbine 18; a cooling part 26 provided in the intake duct to cool the intake air by heat exchange with a cooling medium introduced from an outside; a drain discharge line 102 connected to a part of the intake duct below an inlet 14a of the compressor so as to discharge drain water flowing along an inner peripheral surface of the intake duct; and a water seal part 104 provided in the drain discharge line 102 to keep water seal in a part of the drain discharge line 102 by a water pressure at least corresponding to an amount of a negative pressure in the vicinity of the inlet of the compressor.