JP6691744B2 - Floating structure and floating power plant - Google Patents

Description

  The present invention relates to a floating structure having a water intake and a drain, and a floating power plant.

  Conventionally, a floating body type power generation plant including a floating body equipped with a power generation plant is known (for example, refer to Patent Document 1). This floating power plant is provided with a water intake device and a drainage device, the water intake device takes in cooling water for cooling the power plant from an intake port provided in the floating body, and the drainage device is the cooling used in the power plant. Water is drained from the drain provided on the floating body.

JP, 2013-180618, A

  The cooling water used in the power plant is warmed by a heat exchanger such as a condenser provided in the power plant, and then discharged to the outside. Since the floating power generation plant is installed on the sea, the cooling water discharged from the drainage port raises the seawater temperature. Here, from the viewpoint of environmental assessment, the increase range of the seawater temperature due to the drainage of the cooling water is regulated to be equal to or smaller than the predetermined increase range.

  Therefore, it is an object of the present invention to provide a floating structure and a floating power plant that can suppress an increase in seawater temperature.

  The floating structure of the present invention is provided with a barge floated on the sea, and at the bottom of the barge, an intake port provided on a side surface or a bottom surface of the barge for taking in seawater used for cooling, and the barge. And a drainage port provided on a surface different from the intake port for discharging the seawater after use, the drainage port being provided above the intake port and below the draft line of the barge. It is provided on the side.

  According to this configuration, since the drain port can be arranged on the upper side, the seawater discharged from the drain port easily spreads along the sea surface, and the spread seawater evaporates, thereby increasing the seawater temperature. Can be suppressed. In addition, since the intake port and the drain port can be separated by providing the intake port and the drain port on different surfaces, it is possible to suppress the intake of seawater whose seawater temperature rises due to the discharged seawater. The rise in seawater temperature due to the circulation of seawater between the mouth and the drain can be suppressed.

  Further, it is preferable that the water intake port is provided on one side surface of the barge, and the drain port is provided on the other side surface opposite to one side surface of the barge.

  According to this configuration, since the intake port and the drain port can be further separated from each other, it is possible to further suppress an increase in seawater temperature due to the circulation of seawater between the intake port and the drain port.

  Further, it is preferable to further include an intake pipe extending from the intake port toward the seabed.

  According to this configuration, since the seawater having a low temperature near the seabed can be taken in, the temperature of the seawater discharged from the drain port can be lowered. Therefore, it is possible to prevent the seawater temperature from rising due to the seawater discharged from the drainage port.

  Further, the intake port and the drain port are provided separately at positions of both ends in the ship length direction which is a direction connecting the bow and the stern of the barge, and a ship width direction orthogonal to the ship length direction and the height direction. It is preferable that they are provided separately at the positions of both ends.

  According to this configuration, since the intake port and the drain port can be further separated from each other, it is possible to further suppress the increase in seawater temperature due to the circulation of seawater between the intake port and the drain port.

  Further, it is preferable to further include a guide portion that guides the seawater discharged from the drainage port so as to flow in a direction away from the water intake port.

  According to this configuration, the guide portion allows the seawater drained from the drainage port to flow away from the intake port, further suppressing the intake of the seawater drained from the drainage port. can do. Therefore, it is possible to further suppress the rise in seawater temperature due to the circulation of seawater between the intake port and the drain port.

  Further, the guide portion is attached to a surface provided with the drainage port, and a drainage flow path is provided along the barge so as to face a portion on a side opposite to a side of the barge where the water intake port is provided. It is preferable to have a sheet member to be formed.

  According to this structure, the seawater drained from the drain port flows in the direction away from the water intake port by flowing through the drain flow path formed by the sheet member. Therefore, it is possible to further suppress the intake of seawater discharged from the drainage port from the intake port, and thus to further suppress the rise in seawater temperature due to the circulation of seawater between the intake port and the drainage port. You can

  Further, it is preferable that the guide portion further includes a floating member attached above the sheet member, and a weight attached below the sheet member.

With this configuration, the sheet member can be arranged in a state of being stretched in the vertical direction by the floating member and the weight. Further, by providing the weight, it becomes difficult for the sheet member to flow due to the ocean current, so that the drainage flow path formed by the sheet member can be appropriately maintained.
The sheet member may have a mesh or may not have a mesh, and is not particularly limited.

  Further, the barge is provided on one side across the breakwater, the guide portion is connected to the drainage port, and the seawater discharged from the drainage port flows to the other side across the breakwater. It is preferably a flow path member.

  With this configuration, the flow path member can discharge the seawater drained from the drainage port to the sea area on the side opposite to the side where the barge is provided, with the breakwater in between. Therefore, it is possible to prevent the seawater drained from the drain port from being taken in from the intake port, so that it is possible to suppress the rise in seawater temperature due to the circulation of seawater between the intake port and the drain port. ..

  Further, it is preferable that the flow path member is a drain pipe.

  According to this configuration, since the seawater drained from the drainage port is drained through the drain pipe, the seawater does not flow out to the sea area on the side where the barge is installed, and the seawater on the side opposite to the side where the barge is installed is provided. It can release seawater to the sea area.

  Further, the guide portion is connected to the sheet member provided facing the barge, the seawater drained from the drain port, the seawater drained from the drain port, sandwiching the sheet member, the barge from the barge side. It is preferable to have a flow path member that is circulated on the side opposite to the above.

  According to this configuration, the flow path member can discharge the seawater drained from the drain port to the sea area on the side opposite to the side where the barge is provided, with the sheet member sandwiched therebetween. Therefore, it is possible to prevent the seawater drained from the drain port from being taken in from the intake port, so that it is possible to suppress the rise in seawater temperature due to the circulation of seawater between the intake port and the drain port. ..

  The flow path member may include a pair of floating members, and a sheet member whose both ends are connected to the pair of floating members and which are suspended by the pair of floating members in a state of being submerged in the sea, preferable.

  According to this configuration, since the flow path member can be configured using the sheet member, the flow path member can be configured using an inexpensive material, and the flow path member has a simple configuration. be able to.

  Another floating structure of the present invention is a barge floated on the sea, an intake port provided on the barge for taking in seawater used for cooling, and a barge provided on the barge, after use. A drainage port for discharging seawater, wherein the intake port and the drainage port are provided separately at positions of both ends in the ship length direction which is a direction connecting the bow and the stern of the barge, and the ship length direction and It is characterized in that it is provided separately at the positions of both ends in the ship width direction orthogonal to the height direction.

  According to this configuration, since the intake port and the drain port can be separated from each other, it is possible to suppress the intake of seawater whose seawater temperature has risen due to the drained seawater. The rise in seawater temperature due to circulation can be suppressed.

  Another floating structure of the present invention is a barge floated on the sea, an intake port provided on the barge for taking in seawater used for cooling, and a barge provided on the barge, after use. A drainage port for discharging seawater, and a guide portion for guiding the seawater discharged from the drainage port so as to flow in a direction away from the water intake port.

  According to this configuration, the guide portion allows the seawater drained from the drainage port to flow away from the intake port, thus suppressing the intake of the seawater drained from the drainage port. be able to. Therefore, it is possible to suppress an increase in seawater temperature due to the circulation of seawater between the intake port and the drain port.

  The floating power plant of the present invention comprises the above floating structure, and a power plant mounted on the barge of the floating structure, wherein the power plant uses seawater taken from the intake port as cooling water. It is characterized by being used and draining the seawater after use through the drainage port.

  According to this configuration, when power is generated in the power plant, the seawater temperature can be prevented from rising due to the seawater drained from the drainage port. Therefore, it is possible to provide a floating power generation plant that is unlikely to affect the environment.

FIG. 1 is a schematic configuration diagram illustrating the entire floating body power generation plant according to the first embodiment. FIG. 2 is a schematic configuration diagram showing the floating power plant according to the first embodiment. FIG. 3 is an explanatory diagram illustrating the power generation plant and the fuel plant according to the first embodiment. FIG. 4 is a front view of the floating power plant according to the first embodiment as viewed from the ship length direction. FIG. 5 is a front view of the floating power plant according to the second embodiment as viewed from the ship length direction. FIG. 6 is a plan view of the floating power generation plant according to the third embodiment as viewed from the height direction. FIG. 7 is a plan view of the floating power plant according to the fourth embodiment when viewed from the height direction. FIG. 8 is a sectional view taken along line AA of FIG. 7. FIG. 9 is a plan view of the floating power plant according to the fifth embodiment as viewed from the height direction. FIG. 10 is a sectional view taken along line AA of FIG. FIG. 11 is a plan view of the floating power generation plant according to the sixth embodiment as viewed from the height direction.

  Embodiments according to the present invention will be described below in detail with reference to the drawings. The present invention is not limited to this embodiment. In addition, constituent elements in the following embodiments include elements that can be easily replaced by those skilled in the art, or substantially the same elements. Furthermore, the constituent elements described below can be combined as appropriate, and when there are a plurality of embodiments, the respective embodiments can be combined.

[Embodiment 1]
FIG. 1 is a schematic configuration diagram illustrating the entire floating body power generation plant according to the first embodiment. The floating power generation plant 1 of Embodiment 1 is a power generation plant floated on the sea W, and transmits the electric power generated on the sea W to the power receiving facility 6 on the land G via the power transmission cable 4. ing.

  The power transmission cable 4 connects the floating power generation plant 1 and the power receiving equipment 6 so as to be able to transmit power, and is provided to extend into the sea W. The power transmission cable 4 is laid along a seabed WG (for example, a sea of 50 m) to a power receiving facility 6 of a land G located 1 km away. The power transmission cable 4 transmits large electric power of, for example, 200,000 kW or more, which is generated by the floating power generation plant 1.

  The power receiving facility 6 is, for example, a substation, which converts (transforms) the electric power supplied from the floating power generation plant 1 on the sea W by the power transmission cable 4, and the converted electric power is not illustrated via the ground power transmission line 6A. Supply to power consumption equipment.

  The floating power generation plant 1 is a plant that generates power by using, for example, LNG (Liquefied Natural Gas) as a fuel. The floating power plant 1 is arranged in a bay or inside a breakwater. In the first embodiment, the case of using LNG as the fuel will be described, but the fuel to be used is not particularly limited, and fuel from an oil field or gas field on the seabed may be collected and used.

  FIG. 2 is a schematic configuration diagram showing the floating power plant according to the first embodiment. As shown in FIGS. 1 and 2, the floating body power generation plant 1 includes a floating structure 10, a power generation plant 11, and a fuel plant 12. Then, between the power plant 11 and the fuel plant 12, fuel transfer pipes 13 for sending fuel from the fuel plant 12 to the power plant 11 are connected to the power plant 11 and the fuel plant 12, respectively.

  The floating structure 10 is provided so as to float on the sea W, and is moored by a mooring tool such as an anchor or a rope (not shown). As shown in FIG. 2, a power generation plant 11 and a fuel plant 12 are mounted on the floating structure 10. The floating structure 10 has a barge 15, a water intake 16, and a drain 17. The barge 15 is a flat-bottomed hull that does not have a propulsion device, and can be towed by a ship (not shown). The barge 15 has an upper surface and a bottom surface, and four side surfaces, and is formed in a substantially rectangular shape. In the barge 15, the left-right direction in FIG. 2 is the ship length direction connecting the bow and stern, the up-down direction in FIG. 2 is the height direction, and the front-back direction in FIG. 2 is the ship length direction. And the ship width direction is orthogonal to the height direction. The water intake 16 is provided on one side surface of the barge 15 in the ship width direction, and takes in seawater used for cooling. The drainage port 17 is provided on the other side surface of the barge 15 in the ship width direction, and drains seawater after use. Therefore, the intake port 16 and the drain port 17 are provided on different surfaces of the barge 15. The details of the intake port 16 and the drain port 17 will be described later.

  Next, the power generation plant 11 and the fuel plant 12 will be described with reference to FIG. FIG. 3 is an explanatory diagram illustrating the power generation plant and the fuel plant according to the first embodiment.

  As shown in FIG. 3, the fuel plant 12 includes an LNG tank 30, an LNG vaporizing facility 31, a compressor 32, and a fuel supply device 33. The LNG tank 30 is formed in a spherical shape and stores liquefied natural gas serving as a fuel therein. The LNG vaporization facility 31 vaporizes the liquefied natural gas supplied from the LNG tank 30. Circulation flow paths for circulating water as a heat medium are provided between the LNG vaporization facility 31 and an intake device 57 and a condenser 44 of the power generation plant 11 which will be described later. Then, the water heated by exchanging heat with the intake device 57 and the condenser 44 flows through the circulation passage and flows into the LNG vaporization facility 31. The water flowing into the LNG vaporization facility 31 is used as a heat medium for vaporizing the liquefied natural gas. Then, the water cooled by heat exchange in the LNG vaporization facility 31 flows through the circulation flow path and flows into the intake device 57 and the condenser 44. The compressor 32 pressurizes the liquefied natural gas regasified by the LNG vaporization equipment 31. The fuel supply device 33 supplies the pressurized liquefied natural gas to the power generation plant 11 via the fuel transfer pipe 13.

  The power generation plant 11 uses the liquefied natural gas supplied from the fuel plant 12 through the fuel transfer pipe 13 as a fuel, and burns this fuel to generate power. As shown in FIG. 3, the power generation plant 11 includes a gas turbine 41, an exhaust heat recovery boiler 42, a steam turbine 43, a condenser 44, and a generator 45. The power generation plant 11 combusts fuel and air in a gas turbine 41, generates power by the generated combustion gas, and sends exhaust gas discharged from the gas turbine 41 to an exhaust heat recovery boiler 42 to generate steam, It is a combined power generation plant that sends the generated steam to the steam turbine 43 to generate electric power.

  The gas turbine 41 includes a compressor 52, a combustor 53, and a turbine 54. A rotor 55 penetrates through the central portions of the compressor 52, the combustor 53, and the turbine 54, and the compressor 52 and the turbine 54 are integrally rotatably connected by the rotor 55. Further, the generator 55 is connected to the rotor 55 of the gas turbine 41 to enable power generation. Further, the steam turbine 43 is connected to the rotor 55.

  An intake device 57 having a filter is connected to the inlet side of the compressor 52 via an intake pipe. The compressor 52 compresses the air taken in through the intake device 57 to obtain high temperature and high pressure compressed air. As described above, since the water cooled in the LNG vaporization equipment 31 flows into the intake device 57 through the circulation flow path and the air taken in by the inflowing water can be cooled, the thermal efficiency of the gas turbine 41 is improved. Can be increased.

  The fuel transfer pipe 13 is connected to the combustor 53, and the fuel is supplied from the fuel supply device 33 through the fuel transfer pipe 13. In addition, the combustor 53 supplies fuel to the compressed air compressed by the compressor 52, mixes the compressed air and the fuel, and burns them to generate combustion gas.

  The turbine 54 is rotated by the combustion gas generated by the combustor 53. The exhaust heat recovery boiler 42 is connected to the outlet side of the turbine 54 via an exhaust pipe, and the turbine 54 discharges the combustion gas as exhaust gas toward the exhaust heat recovery boiler 42.

  Both ends of the rotor 55 in the axial direction are rotatably supported by bearings (not shown), and are rotatably provided around the shaft center. The generator 45 is connected to one end of the rotor 55 in the axial direction. The generator 45 is, for example, a thyristor motor and functions as a gas turbine starting motor and also as a generator after starting the gas turbine. The generator 45 can generate power by rotating the turbine 54.

  Therefore, in the gas turbine 41, the air taken in through the intake device 57 passes through the inside of the compressor 52 and is compressed into high-temperature, high-pressure compressed air. Fuel is supplied to the compressed air from the combustor 53, and the compressed air and the fuel are mixed and burned to generate high-temperature and high-pressure combustion gas. Then, the high-temperature and high-pressure combustion gas generated in the combustor 53 passes through the inside of the turbine 54, thereby operating (rotating) the turbine 54 to drive and rotate the rotor 55, and the rotor 55 is connected to the rotor 55. The generator 45 is driven. As a result, the generator 45 connected to the rotor 55 is driven to rotate to generate power. Then, the combustion gas after driving the turbine 54 is discharged to the exhaust heat recovery boiler 42 as exhaust gas.

  The exhaust heat recovery boiler 42 has, for example, a high-pressure boiler, an intermediate-pressure boiler, and a low-pressure boiler, and the exhaust gas from the gas turbine 41 can generate steam in each boiler. The steam generated in the exhaust heat recovery boiler 42 is supplied to the steam turbine 43.

  The steam turbine 43 is driven by the supply of the steam generated in the exhaust heat recovery boiler 42, and the rotor 55 connected to the steam turbine 43 is rotated to drive the generator 45 connected to the rotor 55. be able to. Then, the steam supplied to the steam turbine 43 is sent to a condenser 44 via a pipe to be condensed, and then the water condensed by a not-shown condensate pump is sent to the exhaust heat recovery boiler 42.

  The condenser 44 uses seawater taken in from the water intake 16 by the water intake device 61 as cooling water for condensing the steam supplied from the steam turbine 43. Further, the condenser 44 heat-exchanges the seawater taken in from the water intake 16 and the steam supplied from the steam turbine 43, and the seawater warmed by the heat exchange is drained from the water drain 17 by the drainage device 62. is doing.

  The water intake device 61 takes in seawater from the water intake 16 and supplies the seawater to the condenser 44 of the power plant 11. The drainage device 62 drains the seawater heated by the condenser 44 of the power generation plant 11 from the drainage port 17 to the outside sea area.

  Therefore, the exhaust gas discharged from the gas turbine 11 is supplied to the exhaust heat recovery boiler 42 and exchanges heat with water in the exhaust heat recovery boiler 42 to evaporate the water and generate steam. The generated steam is supplied from the exhaust heat recovery boiler 42 to the steam turbine 43, and when the steam passes through the inside of the steam turbine 43, the steam turbine 43 is operated (rotated) to drive and rotate the rotor 55, The generator 45 connected to this rotor 55 is driven. As a result, the generator 45 connected to the rotor 55 is driven to rotate to generate power. Then, the steam after driving the steam turbine 43 flows into the condenser 44. The steam that has flowed into the condenser 44 exchanges heat with the seawater taken in by the water intake device 61 to condense the steam and generate water. The water condensed in the condenser 44 is supplied to the exhaust heat recovery boiler 42. On the other hand, the seawater warmed by steam by heat exchange is drained to the outside sea area by the drainage device 62.

  The electric power generated by the power generator 45 of the power generation plant 11 is converted (transformed) into a voltage that can be received by the power receiving equipment 6 of the land G described above by the power transmission substation equipment 65 connected to the power generator 45. The converted electric power is supplied to the power receiving facility 6 on the land G via the power transmission cable 4.

  Next, the intake 16 and the drain 17 will be described with reference to FIGS. 2 and 4. FIG. 4 is a front view of the floating power plant according to the first embodiment as viewed from the ship length direction. As shown in FIG. 2, the water intake 16 and the drain 17 are circular openings. The water intake 16 is formed on the ship bottom side on one side surface of the barge 15 in the ship width direction. The drainage port 17 is provided on the other side surface of the barge 15 in the ship width direction above the water intake port 16 and below the water line L of the barge 15. As a more preferable aspect, the drainage port 17 is provided directly below the waterline L of the barge 15. The seawater drained from the drain port 17 configured in this way spreads along the sea surface and flows.

  As described above, according to the first embodiment, since the drainage port 17 can be arranged on the upper side, the seawater discharged from the drainage port 17 easily spreads along the sea surface, and the spread seawater evaporates. Thus, the rise in seawater temperature can be suppressed.

  Further, according to the first embodiment, the intake port 16 is provided on one side surface of the barge 15 and the drain port 17 is provided on the other side surface of the barge 15, so that the intake port 16 and the drain port 17 are provided on different surfaces. be able to. Therefore, the intake port 16 and the drain port 17 can be separated from each other, and it is possible to suppress the intake of the seawater whose seawater temperature has risen due to the drained seawater. Therefore, the seawater between the intake port 16 and the drain port 17 can be suppressed. The rise in seawater temperature due to circulation can be suppressed.

  Further, according to the first embodiment, when power generation is performed in the power generation plant 11, it is possible to prevent the seawater temperature from increasing due to seawater drained from the drainage port 17. Therefore, it is possible to provide the floating power generation plant 1 that has little influence on the environment.

  In Embodiment 1, the shapes of the intake port 16 and the drainage port 17 are circular openings, but the configuration is not particularly limited to this configuration. For example, the drainage port 17 may have a horizontal direction with respect to a vertical length. May be formed to have a long length. According to this configuration, the seawater drained from the drainage port 17 can be more easily spread, and the evaporation of the seawater can be further promoted.

  Further, in the first embodiment, the flow rate of seawater taken in from the intake port 16 and the flow rate of seawater discharged from the drain port 17 are not particularly limited, but by setting the flow rate of the discharged seawater appropriately, cold and warm seawater can be obtained. The temperature distribution can be adjusted to give the least environmental impact.

  Further, in the first embodiment, the condenser 44 is provided on the sea W in a state where the condenser 44 is mounted on the floating structure 10, and the drain port 17 is provided above the intake port 16 and above the water line L. Was also provided on the lower side, but is not limited to this configuration. For example, when the condenser 44 is provided on the land G, the drain port 17 may be provided above the water intake port 16 and below the sea level.

[Embodiment 2]
Next, a floating body power generation plant 80 according to the second embodiment will be described with reference to FIG. FIG. 5 is a front view of the floating power plant according to the second embodiment as viewed from the ship length direction. In the second embodiment, in order to avoid duplicated description, parts different from the first embodiment will be described, and parts having the same configuration as the first embodiment will be described with the same reference numerals.

  The floating power generation plant 80 according to the second embodiment has a structure in which the water intake 16 formed in the floating structure 10 is provided on the bottom surface of the barge 15, and the water intake pipe 81 is attached to the water intake 16. Specifically, the water intake 16 is formed on the bottom surface of the barge 15 on the side opposite to the side where the drainage port 17 is provided. The water intake pipe 81 is a cylindrical pipe, and is provided so as to extend downward from the water intake 16 toward the seabed in the height direction.

  As described above, according to the second embodiment, since the seawater having a low temperature near the seabed WG can be taken in, the temperature of the seawater discharged from the drainage port 17 can be lowered. Therefore, it is possible to prevent the seawater temperature from rising due to the seawater drained from the drainage port 17.

[Third Embodiment]
Next, with reference to FIG. 6, a floating body power generation plant 90 according to the third embodiment will be described. FIG. 6 is a plan view of the floating power generation plant according to the third embodiment as viewed from the height direction. In addition, also in the third embodiment, in order to avoid redundant description, portions different from those of the first and second embodiments will be described, and portions having the same configurations as those of the first and second embodiments will be described with the same reference numerals.

  In the floating-type power generation plant 90 according to the third embodiment, the water intake 16 and the drain 17 formed in the floating structure 10 are provided separately at the positions of both ends in the ship length direction and the positions of both ends in the ship width direction. It is provided separately. That is, the water intake port 16 is provided on one side surface of the barge 15 in the ship width direction and is provided close to one end portion in the ship length direction. On the other hand, the drainage port 17 is provided on the other side surface of the barge 15 in the ship width direction and is provided close to the other end in the ship length direction.

  As described above, according to the third embodiment, since the intake port 16 and the drain port 17 can be provided separately, it is possible to suppress the rise of the seawater temperature due to the circulation of the seawater between the intake port 16 and the drain port 17. can do.

[Embodiment 4]
Next, with reference to FIGS. 7 and 8, a floating power plant 100 according to the fourth embodiment will be described. FIG. 7 is a plan view of the floating power plant according to the fourth embodiment when viewed from the height direction. FIG. 8 is a sectional view taken along line AA of FIG. 7. In addition, also in Embodiment 4, in order to avoid duplicate description, portions different from those in Embodiments 1 to 3 will be described, and portions having the same configurations as those in Embodiments 1 to 3 will be denoted by the same reference numerals.

  The floating power generation plant 100 according to the fourth embodiment is configured such that the floating power generation plant 1 according to the first embodiment further includes a guide portion 101. The guide portion 101 guides the seawater discharged from the drainage port 17 so as to flow in a direction away from the intake port 16.

  The guide portion 101 includes a sheet member 102, a floating member 103, and a weight 104. One end of the sheet member 102 is attached to the side surface of the barge 15 near the drainage port 17. At this time, the seat member 102 is attached so as to be located outside the drainage port 17 in the ship length direction. The seat member 102 is provided so as to extend in the ship width direction from the side surface of the barge 15, is bent in the ship length direction, and extends in the ship length direction along the side surface of the barge 15. For this reason, the sheet member 102 forms a drainage flow path along the barge 15 so as to face the site on the opposite side of the site on which the water intake 16 of the barge 15 is provided. The sheet member 102 may have a mesh or may not have a mesh, and is not particularly limited.

  Further, as shown in FIG. 8, the floating member 103 is attached to the upper side of the seat member 102 in the height direction, and the weight 104 is attached to the lower side of the seat member 102 in the height direction. Therefore, the sheet member 102 is arranged in a state of being stretched in the height direction. Further, the lower end portion of the sheet member 102 is installed apart from the seabed WG.

  As described above, according to the fourth embodiment, the seawater drained from the drainage port 17 is caused to flow along the drainage flow path formed by the sheet member 102 of the guide portion 101, thereby moving away from the water intake port 16. The seawater discharged from the drainage port 17 can be prevented from being taken in from the intake port 16 because it can be flowed to the. Therefore, it is possible to suppress an increase in seawater temperature due to the circulation of seawater between the intake port 16 and the drain port 17.

  Further, according to the fourth embodiment, the floating member 103 and the weight 104 allow the sheet member 102 to be arranged in a state of being stretched in the height direction (vertical direction). Further, by providing the weight 104, it becomes difficult for the sheet member 102 to flow due to the ocean current, so that the drainage flow path formed by the sheet member 102 can be appropriately maintained.

[Fifth Embodiment]
Next, a floating body type power generation plant 110 according to the fifth embodiment will be described with reference to FIGS. 9 and 10. FIG. 9 is a plan view of the floating power plant according to the fifth embodiment as viewed from the height direction. FIG. 10 is a sectional view taken along line AA of FIG. In the fifth embodiment as well, parts different from those of the first to fourth embodiments will be described in order to avoid redundant description, and parts having the same configurations as those of the first to fourth embodiments will be described with the same reference numerals.

  The floating-type power generation plant 110 according to the fifth embodiment has the configuration of the floating-type power generation plant 1 according to the first embodiment further including a flow path member 112 as a guide portion. Here, the floating power generation plant 110 according to the fifth embodiment is provided inside the breakwater 111 provided from the land G to the sea.

  The flow path member 112 allows the seawater drained from the drainage port 17 to flow in a direction away from the intake port 16. For the flow path member 112, for example, a drain pipe that is a cylindrical pipe is used, and one end of the drain pipe is connected to the drain port 17 of the barge 15, while the other end is located outside the breakwater 111. The inside and the outside of 111 are arranged to communicate with each other.

  As described above, according to the fifth embodiment, the flow path member 112 can discharge the seawater drained from the drainage port 17 to the sea area outside the breakwater 111. For this reason, since the intake 16 is located in the sea area inside the breakwater 111, it is possible to prevent the seawater drained from the drain 17 from being taken from the intake 16, and It is possible to suppress an increase in seawater temperature due to the circulation of seawater with the drainage port 17.

  In the fifth embodiment, the flow channel member 112 is configured by using the drain pipe, but, for example, as illustrated in FIG. 10, the flow channel member 112 is configured by using the sheet member 113 and the floating member 114. May be. Specifically, the flow path member 112 shown in FIG. 10 is configured to include a sheet member 113 and a floating member 114. The floating member 114 is provided so as to penetrate from the inside of the breakwater 111, penetrate the breakwater 111, and extend to the outside of the breakwater 111. Further, a pair of floating members 114 are provided so as to face each other with the drainage flow path formed therebetween. Both ends of the sheet member 113 are connected to the pair of floating members 114, and are suspended from the pair of floating members 114 in a state of being immersed in the sea. Therefore, the sheet member 113 forms a drainage flow path inside the pair of floating members 114.

  According to this configuration, since the flow path member 112 can be formed by using the sheet member 113, the flow path member 112 can be formed by using an inexpensive material, and the flow path member 112 is simple. It can be configured in various ways.

[Sixth Embodiment]
Next, with reference to FIG. 11, a floating power generation plant 120 according to the sixth embodiment will be described. FIG. 11 is a plan view of the floating power generation plant according to the sixth embodiment as viewed from the height direction. In addition, also in the sixth embodiment, in order to avoid redundant description, portions different from those of the first to fifth embodiments will be described, and portions having the same configurations as those of the first to fifth embodiments will be described with the same reference numerals.

  The floating power generation plant 120 according to the sixth embodiment is configured such that the floating power generation plant 1 according to the first embodiment further includes a sheet member 122 as a guide portion 121 and a flow path member 123. The sheet member 122 is provided to face the side surface of the barge 15 on the side where the drainage port 17 is provided. The seat member 122 is provided so as to extend in the ship length direction along the side surface of the barge 15. The sheet member 122 is provided with the floating member 103 and the weight 104, similarly to the sheet member 102 shown in FIG. 8 of the fourth embodiment.

  The flow path member 123 allows seawater discharged from the drainage port 17 to flow in a direction away from the intake port 16. As the flow path member 123, for example, the same one as the flow path member 112 shown in FIG. 10 of the fifth embodiment is used, and one end thereof is connected to the drainage port 17 of the barge 15, while the other end is a sheet. The sheet member 122 is arranged in communication with the member 122 so as to be located on the opposite side of the barge 15 with the member 122 interposed therebetween.

  As described above, according to the sixth embodiment, the flow path member 123 discharges the seawater drained from the drain port 17 to the sea area on the side opposite to the side where the barge 15 is provided, with the sheet member 122 interposed therebetween. be able to. For this reason, since the water intake 16 is provided on one side with the sheet member 122 interposed therebetween, and the drainage port 17 is provided on the other side with the sheet member 122 interposed therebetween, the seawater drained from the drainage port 17 is Since it is possible to suppress the intake of water from the inlet 16, it is possible to suppress an increase in seawater temperature due to the circulation of seawater between the intake 16 and the drainage port 17.

  In the third to sixth embodiments, the water intake 16 and the drain 17 may be arranged on the lower side and the drain 17 on the upper side, as in the first and second embodiments. .. Further, the configuration is not particularly limited to the configurations of Embodiments 1 and 2, and the intake port 16 and the drain port 17 may have the same height.

1 Floating power plant (Embodiment 1)
10 Floating Structure 11 Power Plant 12 Fuel Plant 15 Barge 16 Intake Port 17 Drainage Port 30 LNG Tank 31 LNG Vaporization Equipment 32 Compressor 33 Fuel Supply Device 41 Gas Turbine 42 Exhaust Heat Recovery Boiler 43 Steam Turbine 44 Condenser 45 Generator 61 Water intake device 62 Drainage device 65 Substation facility for power transmission 80 Floating type power plant (Embodiment 2)
81 Intake Pipe 90 Floating Power Plant (Embodiment 3)
100 Floating Power Plant (Embodiment 4)
101 Guide Part 102 Sheet Member 103 Floating Member 104 Weight 110 Floating Power Plant (Fifth Embodiment)
111 Breakwater 112 Flow path member 113 Sheet member 114 Floating member 120 Floating body type power plant (Embodiment 6)
121 Guide part 122 Sheet member 123 Flow path member G Land W Sea WG Seabed L Draft line

Claims (5)

A barge floating on the sea,
At the bottom of the barge, an intake provided on the side or bottom of the barge to take in seawater used for cooling,
A drainage port provided on a surface different from the water intake port of the barge for discharging the seawater after use,
The seawater drained from the drainage port, a guide portion for guiding so as to flow in a direction away from the intake port,
The drainage port is provided above the water intake port, below the water line of the barge,
The guide is
A sheet member attached to a surface provided with the drainage port, so as to face a site on the opposite side of the site on which the water intake port of the barge is provided, and a sheet member that forms a drainage flow path along the barge,
A floating member attached to the upper end of the sheet member,
A weight attached to the lower end of the sheet member,
The sheet member, said by the float member and the weight, while being placed in a state stretched in the vertical direction, floating construction in which the end portion of the lower side, characterized in that it is arranged away from the seabed. The water intake is provided on one side surface of the barge,
The floating structure according to claim 1, wherein the drainage port is provided on the other side surface opposite to one side surface of the barge.   The floating structure according to claim 1, further comprising an intake pipe extending from the intake port toward the seabed.   The intake port and the drain port are provided apart from each other at positions of both ends in the ship length direction which is a direction connecting the bow and the stern of the barge, and both ends in the ship width direction orthogonal to the ship length direction and the height direction. The floating structure according to any one of claims 1 to 3, wherein the floating structure is provided separately at the positions of the parts. A floating structure according to any one of claims 1 to 4,
A power plant mounted on the barge of the floating structure,
The floating power plant, wherein the power plant uses the seawater taken from the water intake port as cooling water and drains the used seawater through the drain port.

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