JP5689196B1 - Power generation apparatus and power generation method - Google Patents

Abstract

A power generation apparatus and a power generation method capable of generating power more simply and efficiently. A power generator includes a jet engine that generates a gas flow, a water supply device that supplies water to the gas flow to generate a working fluid, an impeller that rotates by receiving the working fluid, And a generator 50 connected to the impeller 40. [Selection] Figure 1

Description

  The present invention relates to a power generation apparatus and a power generation method for generating power.

  Conventionally, in thermal power generation using the combustion energy of fossil fuel, power generation is mainly performed by steam power generation. In this steam power generation, steam is generated by burning coal, natural gas or the like in a boiler, and power is generated by rotating a generator by a steam turbine rotated by the steam. In recent thermal power generation, combined cycle power generation with higher thermal efficiency is also performed (see, for example, Patent Document 1). This combined cycle power generation not only generates power by directly rotating a generator with a gas turbine, but also generates steam from the waste heat of the gas turbine and generates power with the steam turbine as well, resulting in higher thermal efficiency than steam power generation. Has achieved.

  On the other hand, along with the recent increase in environmental awareness such as depletion of fossil fuels and global warming, power generation using natural energy (renewable energy) such as hydropower, wind power, and sunlight has been reviewed. Such power generation using natural energy has the advantage of low environmental impact, such as no depletion of energy sources and no emission of carbon dioxide compared to thermal power generation that burns fossil fuels. Yes. Of these, hydroelectric power generation has been used for commercial power generation since ancient times because it uses high-density water flow and has high energy conversion efficiency, and more stable power generation is possible. Small hydropower generation provided in rivers and the like has become widespread (for example, see Patent Document 2).

Japanese Patent Laid-Open No. 10-306708 JP 2006-189014 A

  However, although conventional combined cycle power generation has higher thermal efficiency than steam power generation, it requires a waste heat recovery boiler, steam turbine, condenser, etc. in addition to a gas turbine, which increases equipment costs and maintenance costs. There was a problem to do. In addition, since hydroelectric power generation is limited to places where water flows, such as rivers, there is a problem that transmission loss increases when the installation location is far from the power consumption area. Furthermore, in hydroelectric power generation, in order to increase the amount of power generation, it is necessary to construct a dam or the like to increase the water drop, and there is a problem that the cost of equipment increases and the surrounding natural environment is destroyed.

  In view of such circumstances, the present invention intends to provide a power generation apparatus and a power generation method capable of generating power more simply and efficiently.

(1) The present invention has a jet engine that generates a gas flow, a water supply device that supplies water to the gas flow to generate a working fluid, and a plurality of blade rows that receive the working fluid in turn. An impeller that rotates in response to the working fluid; a deflection member that deflects the working fluid that has flowed out of the blade row toward the next blade row; and a generator that is connected to the impeller. It is a power generator characterized by these.

  (2) The present invention is the power generation device according to (1) above, further including a flywheel that rotates together with the impeller.

  (3) The present invention is the power generation device according to (2), further including an activation device that transmits rotation of the flywheel to the jet engine to activate the jet engine.

  (4) The present invention also stops the jet engine when the rotational speed of the impeller rises to a first rotational speed during operation of the jet engine, and the rotational speed of the impeller while the jet engine is stopped. The power generator according to (2) or (3) above, further comprising a control device that activates the jet engine when the engine speed decreases to a second rotational speed.

  (5) The present invention also includes a guide pipe that guides the gas flow toward the impeller, and the water supply device is configured to supply water into the guide pipe. The power generator according to any one of (1) to (4) above.

( 6 ) The present invention is also characterized in that the water supply device includes a water storage tank for storing natural water and is configured to supply water using a head. 5 ) A power generator according to any one of the above.

( 7 ) The present invention is also a power generation method in which a generator is rotated by an impeller rotating with a gas flow generated by a jet engine mixed with water as a working fluid. The power generation method includes a plurality of blade rows received in order, and deflects the working fluid flowing out from the blade rows toward the next blade row by a deflection member .

  According to the power generation device and the power generation method according to the present invention, it is possible to achieve an excellent effect that it is possible to perform power generation more easily and efficiently.

It is the schematic plan view which showed the structure of the electric power generating apparatus which concerns on embodiment of this invention. It is a schematic front view of a part of structure of a power generator. (A) It is a schematic plan view of an impeller and a deflection | deviation member. (B) It is the schematic front view which showed a part of impeller and deflection | deviation member in the cross section. It is the schematic which showed the flow of the working fluid in an impeller and a deflection | deviation member. It is a time chart of rotation of an impeller and operation of each part of a power generator.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  First, the structure of the electric power generating apparatus 1 which concerns on this embodiment is demonstrated. FIG. 1 is a schematic plan view showing the configuration of the power generation device 1 according to the present embodiment, and FIG. 2 is a schematic front view of a partial configuration of the power generation device 1. In FIG. 2, the description of a part of the configuration is omitted for easy understanding.

  As shown in these drawings, the power generation apparatus 1 supplies a jet engine 10 that generates a gas flow, an air supply tower 20 that supplies air to the jet engine 10, and supplies water to the gas flow generated by the jet engine 10. A water supply device 30 that generates a working fluid, an impeller 40 that rotates by receiving the working fluid, a generator 50 connected to the impeller 40, an impeller starter 60 that starts the impeller 40, A jet engine activation device 70 that activates the jet engine 10 and a control device 80 that controls the entire power generation device 1 are provided. The power generation apparatus 1 of the present embodiment rotates the impeller 40 using a mixture of the gas flow generated by the jet engine 10 and water as a working fluid, and rotates the generator 50 by the rotational force of the impeller 40. It is configured to generate electricity.

  The jet engine 10 combusts fuel with the air supplied from the air supply tower 20 and discharges the combustion gas as a high-temperature and high-pressure jet (jet), thereby generating a gas flow. That is, a jet engine converts chemical energy of fuel into heat energy and kinetic energy and takes it out.

  The jet engine 10 is accommodated in a cabin 11, and an intake pipe 12 connected to the air supply tower 20 is connected to the intake side of the cabin 11. Further, a guide pipe 13 that guides the gas flow generated by the jet engine 10 toward the impeller 40 is connected to the exhaust side of the cabin 11. Accordingly, the jet engine 10 takes in air through the intake pipe 12 and jets combustion gas toward the induction pipe 13. Thereby, the gas flow which passes the inside of the induction piping 13 from the inside of the cabin 11 is produced | generated.

  The leading end of the guide pipe 13 is a nozzle 13 a that ejects a working fluid toward the impeller 40. The intake pipe 12 is provided with an intake side flow rate sensor 14 for detecting the flow rate of air supplied into the cabin 11. Similarly, the guide pipe 13 is provided with an exhaust-side flow rate sensor 15 that detects the flow rate of the gas flow flowing out of the cabin 11.

  As the jet engine 10, for example, an existing aircraft can be used, and an inexpensive used product may be used. The jet engine 10 may be a turbojet engine or a turbofan jet engine. When a turbofan jet engine is used, a gas flow that passes through the induction pipe 13 is generated by the combustion gas and the airflow from the fan. Needless to say, the fuel used by the jet engine is not particularly limited.

  The air supply tower 20 is a tower provided with an air intake 21 for taking in air to be supplied to the jet engine 10 in the upper part. By arranging the air intake port 21 at a high position in this way, it is possible to prevent inhalation of foreign matters such as dust and to improve the thermal efficiency of the jet engine 10 by taking in relatively low temperature air. Inside the air supply tower 20, an intake pipe 12 from the cabin 11 toward the air intake 21 is passed. In this embodiment, a blower 22 is connected to the tip of the intake pipe 12.

  Thus, by providing the blower 22 in the air supply tower 20, it becomes possible to supply air of a predetermined flow rate to the jet engine 10 more efficiently and stably without being affected by the state of the atmosphere. . The position of the air intake 21 is preferably higher from the viewpoint of preventing foreign matter from being sucked in and lowering the intake air temperature, but there is a problem that the pressure loss of the intake pipe 12 increases as the position is increased. Therefore, considering these balances, the air intake 21 is preferably arranged at a height of 20 to 100 m.

  The water supply device 30 mixes water with the gas flow flowing through the induction pipe 13 by supplying water into the induction pipe 13. Thus, by mixing water with the gas flow generated by the jet engine 10, the gas flow in the induction pipe 13 containing the high-temperature combustion gas is cooled, and the temperature of the working fluid that rotates the impeller 40 is lowered. Is possible. Moreover, since at least a part of the mixed water is heated by the combustion gas and evaporated and expanded, the working fluid can be further accelerated. That is, the heat energy which combustion gas has can be converted into kinetic energy by mixing water with gas flow. Furthermore, since the density of the working fluid is increased by mixing water, the kinetic energy of the working fluid can be efficiently transmitted to the impeller 40.

  The water supply device 30 includes a water tank 31 for storing natural water such as river water, lake water, ground water, rain water, a water supply pipe 32 that guides water in the water tank 31 to the guide pipe 13, and a guide pipe 13. An adjustment valve 33 for adjusting the flow rate of water to be supplied and a water flow rate sensor 34 for detecting the flow rate of water to be supplied into the guide pipe 13 are provided. In the present embodiment, the water storage tank 31 is disposed at a position higher than the guide pipe 13, and water is supplied using a head. Since the supply of water into the guide pipe 13 does not require a drop in hydroelectric power generation, the power generation device 1 of the present embodiment is not limited in installation location while using natural water. Needless to say, an appropriate pump may be provided according to the position of the water storage tank 31.

  The impeller 40 rotates by receiving the working fluid ejected from the nozzle 13a. That is, the impeller 40 converts the kinetic energy of the working fluid into rotational power and outputs it. The impeller 40 is configured in a substantially cylindrical shape, and is rotatably supported by two bases 41 in a state where the rotation shaft is in a substantially horizontal direction. Two blade rows, a first blade row 42 and a second blade row 43, with which the working fluid collides are provided on the outer peripheral portion of the impeller 40. A deflecting member 90 for deflecting the working fluid flowing out from the first blade row 42 toward the second blade row 43 is disposed on the front side of the impeller 40 in the vicinity of the nozzle 13a. That is, the impeller 40 of the present embodiment causes the working fluid once collided with the first vane row 42 to collide with the second vane row 43 again via the deflecting member 90, thereby kinetic energy of the working fluid. Is efficiently transmitted to the impeller 40.

  FIG. 3A is a schematic plan view of the impeller 40 and the deflecting member 90, and FIG. 3B is a schematic front view showing a part of the impeller 40 and the deflecting member 90 in cross section. As shown in these drawings, a plurality (36 in the present embodiment) of first blades 42a are arranged along the circumferential direction on one end side (back side) in the axial direction on the outer peripheral portion of the impeller 40. The first blade row 42 is constituted by the plurality of first blades 42a. Similarly, a plurality (36 in the present embodiment) of second blades 43a are arranged along the circumferential direction on the other end side (front side) in the axial direction of the outer peripheral portion of the impeller 40. A plurality of second blades 43a constitute a second blade row 43.

  The first blade row 42 is covered from one end side (back side) by the first shielding plate 44, and the second blade row 43 is covered from the other end side (front side) by the second shielding plate 45. Covered. The first blade row 42 and the second blade row 43 are partitioned by an intermediate shielding plate 46. The second shielding plate 45 has a first outlet 45a connected to the space between the first blades 42a via the outflow pipe 47 and a second space connected to the space between the second blades 43a. An outlet 45b is provided.

  In the present embodiment, the second blade 43a to be transmitted with smaller kinetic energy than the first blade 42a is configured to be smaller than the first blade 42a and is disposed closer to the outer peripheral side of the impeller 40. Thus, the second blade 43a and the outflow pipe 47 can be arranged efficiently in the radial direction.

  The deflecting member 90 is configured by a recovery unit 91 having a shape in front view that is substantially arcuate along the circumferential direction (rotation direction) of the impeller 40, and a deflection unit 92 protruding from the recovery unit 91. Yes. The collection part 91 is configured in a substantially box shape with the impeller 40 side opened, and is configured to cover a plurality (three in the present embodiment) of the first outlets 45a. Further, an appropriate seal structure is provided between the collection unit 91 and the second shielding plate 45 of the impeller 40. The deflection unit 92 is configured in a tubular shape from the lower part of the collection unit 91, that is, from the front end in the rotation direction of the impeller 40 toward the second blade row 43, and the tip is directed to the second blade 43a. The nozzle 92a ejects the working fluid.

  FIG. 4 is a schematic view showing the flow of the working fluid in the impeller 40 and the deflecting member 90. As shown in the figure, the working fluid is ejected from the nozzle 13a toward the first blade 42a, and most of the working fluid flows into the outflow pipe 47 after colliding with the first blade 42a. It flows into the collection part 91 of the deflecting member 90 from 45a. The working fluid that has flowed into the collection unit 91 then flows in the collection unit 91 along the rotational direction of the impeller 40, flows into the deflection unit 92, and is ejected from the nozzle 92a toward the second blade 43a. . Part of the working fluid that has collided with the second blade 43a flows out from the second outlet 45b, and part of the working fluid falls from the second blade 43a as it is.

  Thus, in this embodiment, since working fluid is made to collide with the impeller 40 twice, more kinetic energy can be converted into rotational power. As a result, the kinetic energy of the working fluid after colliding with the second blade 43a is sufficiently small, so that the water contained in the used working fluid can be easily collected and discharged. Yes. Instead of providing the outflow pipe 47, the first outlet 45a may be provided in the first shielding plate 44, and the deflecting member 90 may be disposed on the first shielding plate 44 side.

  Returning to FIGS. 3A and 3B, the flywheel is configured so that the portion of the impeller 40 closer to the center than the first blade 42a and the second blade 43a has an appropriate weight (mass). A wheel portion 48 is provided. That is, in the present embodiment, the impeller 40 is configured integrally with the flywheel. In other words, in this embodiment, the impeller 40 is configured to function as a flywheel by increasing the weight of the impeller 40 itself.

  Thus, by providing the flywheel portion 48 and increasing the weight of the impeller 40, the rotation of the impeller 40 can be stabilized. Furthermore, since the kinetic energy transmitted from the working fluid can be stored in the impeller 40, the jet engine 10 can be intermittently operated. That is, since the impeller 40 can maintain its rotation only by the inertial force and generate electric power for a certain period, the jet wheel is rotated when the rotational speed of the impeller 40 rotated by the inertial force is reduced to a predetermined lower limit value. An operation method of starting the engine 10 to drive the impeller 40, stopping the jet engine 10 when the rotational speed of the impeller 40 increases to a predetermined upper limit value, and rotating the impeller 40 again by inertial force. Is possible. As a result, the fuel consumption of the jet engine 10 and the water consumption by the water supply device 30 can be reduced, and the lifetime of the inside of the jet engine 10, the first blade 42a, the second blade 43a, and the like can be extended.

  The size and weight of the impeller 40 and the rotation speed of the impeller 40 are not particularly limited, and may be set as appropriate according to various conditions such as a required amount of power generation. According to the knowledge of the present inventor, for example, assuming a rated (electrical) output of about 100,000 kW, the outer diameter of the impeller 40 is 15 to 25 m, the weight of the impeller 40 is 40 to 60 ton, By setting the rated rotational speed to 150 to 250 rpm, stable power generation becomes possible. Furthermore, in this case, by using the jet engine 10 having a thrust of 6000 to 7000 lbf, the operation time of the jet engine 10 can be reduced to about 10% of the power generation time.

  In addition, when a rated (electrical) output of about 250,000 kw is assumed, according to the knowledge of the present inventor, the outer diameter of the impeller 40 is 40 to 60 m, the weight of the impeller 40 is 80 to 120 ton, and the impeller 40 is used. By setting the rated rotation speed of 150 to 250 rpm, stable power generation becomes possible. Furthermore, in this case, by using the jet engine 10 having a thrust of 8000 to 9000 lbf, the operation time of the jet engine 10 can be reduced to about 10% of the power generation time.

  Needless to say, the flywheel 48 may not be provided on the impeller 40 but a flywheel separate from the impeller 40 may be provided. In this case, the position at which the flywheel is arranged is not particularly limited, and the flywheel may be arranged coaxially with the impeller 40 or may be arranged on another axis.

  1 and 2, the impeller 40 is rotatably supported on the base 41 via a support shaft 49, and the rotation speed sensor 49a for detecting the rotation speed of the impeller 40 is supported on the support shaft 49. Is provided. Further, a pit 100 is provided below the impeller 40, and the impeller 40 is arranged in a state where a part of the lower side is accommodated in the pit 100. The pit 100 is connected to a discharge passage 101 for discharging water contained in the used working fluid, and the water that has dropped after colliding with the impeller 40 is discharged to the outside through the discharge passage 101. . Further, the deflection member 90 is fixed to the foundation or the like in the pit 100 via the support member 93.

  A casing and an exhaust tower that cover the impeller 40 may be provided so that the combustion gas and the like contained in the working fluid after use may be efficiently discharged upward. Furthermore, a water recovery device that recovers steam contained in the working fluid after use may be provided in the casing or the exhaust tower, or a denitration device, a desulfurization device, or the like may be provided. . Further, the water discharged from the discharge passage 101 may be returned to the water storage tank 31 again.

  The generator 50 receives the rotational power of the impeller 40 and generates power. The generator 50 is connected to the impeller 40 via a speed increaser 51, a generator clutch 52 and a belt transmission device 53. The speed increaser 51 has an input shaft 51 a connected to the support shaft 49 of the impeller 40 and an output shaft 51 b connected to the belt transmission device 53. The speed increaser 51 increases the rotational power of the impeller 40 input to the input shaft 51a at a predetermined speed increase ratio and outputs it from the output shaft 51b. The generator clutch 52 is provided on the output shaft 51b and switches between connection and disconnection of the generator 50 to the impeller 40. The belt transmission device 53 transmits the rotational power of the output shaft 51b to the generator 50 disposed substantially in parallel with the output shaft 51b. The belt transmission device 53 also increases the rotational speed of the output shaft 51b at a predetermined speed increase ratio and transmits it to the generator 50.

  In the present embodiment, the impeller 40 is provided with a flywheel function and is rotated at a relatively low speed, whereby simple and efficient power generation is performed. Therefore, the rotational power of the impeller 40 is transmitted to the generator 50 after being increased to a predetermined rotational speed by the speed increaser 51 and the belt transmission device 53. In addition, as the generator 50, the speed increaser 51, the generator clutch 52, and the belt transmission device 53, those of various existing structures can be used. In the present embodiment, four generators 50 are provided, but the number of generators 50 is not particularly limited. Further, instead of the belt transmission device 53, another transmission device such as a chain transmission device or a gear transmission device may be used. Further, the speed increase may be performed only by the speed increaser 51.

  The impeller starting device 60 is used when the impeller 40 is started, that is, when the impeller 40 is stopped. The impeller starting device 60 includes a motor 61 that generates rotational power and a connection shaft 62 connected to the output shaft 51 b of the speed increaser 51, and the rotational power of the motor 61 is output to the output shaft 51 b of the speed increaser 51. It is comprised so that the impeller 40 may be rotated by inputting into. Therefore, when starting the impeller 40, the speed increaser 51 functions as a speed reducer. The impeller starting device 60 also includes a speed reducer 63 that decelerates and outputs the rotational power of the motor 61, and a belt transmission device 64 that transmits the rotational power output from the speed reducer 63 to the connecting shaft 62. The impeller starting device 60 includes an impeller starting clutch 65 provided on the connection shaft 62, and the impeller starting device 60 is connected to and disconnected from the impeller 40 by the impeller starting clutch 65. It can be switched.

  In the present embodiment, the weight of the impeller 40 is increased so as to have a flywheel function, but the impeller 40 can be activated quickly by providing the impeller activation device 60 in this way. It becomes. In addition, since it is not necessary to start the impeller 40 only by the thrust of the jet engine 10, it is possible to operate the jet engine 10 with substantially full load during power generation using the small jet engine 10. Thereby, the facility cost and the fuel cost can be reduced, and the thermal efficiency of the jet engine 10 can be improved.

  The jet engine starting device 70 is for transmitting rotational power to a compressor, a turbine, and the like of the jet engine 10 to start the jet engine 10. The jet engine activation device 70 includes a motor activation unit 71 that activates the jet engine 10 when the impeller 40 is stopped, and a transmission activation unit 72 that activates the jet engine 10 when the impeller 40 is rotating. It is equipped with.

  The motor starter 71 includes a motor 71 a that generates rotational power, and a speed increaser 71 b that increases the rotational power of the motor 71 a and transmits it to the jet engine 10. That is, the motor starting unit 71 is configured to rotate the compressor or the like of the jet engine 10 by the rotational power of the motor 71a. The motor starter 71 also includes a motor starter clutch 71c between the speed increaser 71b and the jet engine 10, and the motor starter 71 is connected to and disconnected from the jet engine 10 by the motor starter clutch 71c. Is to be switched.

  The transmission starter 72 includes a belt transmission device 72 a and a speed increaser 72 b that increase the rotational power of the input shaft 51 a of the speed increaser 51 and transmit the speed to the jet engine 10. That is, the transmission starter 72 is configured to rotate the compressor or the like of the jet engine 10 by the rotational power of the impeller 40. The transmission starter 72 also includes a transmission starter clutch 72c between the speed increaser 72b and the jet engine 10. The transmission starter 72 is connected to and disconnected from the jet engine 10 by the transmission starter clutch 72c. Is to be switched.

  As described above, in this embodiment, the jet engine 10 is intermittently operated during power generation, and the impeller 40 is rotated by inertial force while the jet engine 10 is stopped. By providing the portion 72, the jet engine 10 can be started by effectively utilizing the inertial force of the impeller 40. Thereby, during operation of the power generation device 1 (that is, during power generation), the jet engine 10 to be periodically started can be started by the rotational power before being converted into electric power, so that the power generation efficiency is reduced. It becomes possible to raise. In the transmission starter 72, a clutch may be provided between the belt transmission device 72a and the input shaft 51a. Further, instead of the belt transmission device 72a, other transmission devices such as a chain transmission device and a gear transmission device may be used.

  The control device 80 includes an existing computer including a CPU, ROM, RAM, hard disk, and the like. The control device 80 controls each part of the power generator 1 such as the jet engine 10, the blower 22, the water supply device 30, the generator 50, the generator clutch 52, the impeller starter 60, and the jet engine starter 70.

  For example, the control device 80 controls the jet engine 10 and the blower 22 based on the detection results of the intake side flow rate sensor 14, the exhaust side flow rate sensor 15, and the rotation speed sensor 49a. The control device 80 also adjusts the supply amount of water by controlling the adjustment valve 33 based on the detection results of the water flow sensor 34 and the exhaust flow sensor 15. The control device 80 also starts or stops the jet engine 10 by controlling the jet engine 10 and the jet engine starting device 70 based on the detection result of the rotational speed sensor 49a.

  The power generator 1 of the present embodiment also includes a building 110 that houses the cabin 11 (jet engine 10), the impeller 40, the generator 50, the impeller starter 60, the jet engine starter 70, the control device 80, and the like. Yes. The structure of the building 110 is not particularly limited, and may be configured integrally with the air supply tower 20 or the water storage tank 31, for example. Moreover, you may make it provide the building 110 separately for every structure of the electric power generating apparatus 1, and you may make it provide all or one part of the structure of the electric power generating apparatus 1 in the basement.

  Next, a power generation method by the power generation apparatus 1 will be described. FIG. 5 is a time chart of the rotational speed of the impeller 40 and the operation of each part of the power generator 1. The horizontal axis indicates time, and the vertical axis indicates the rotational speed of the impeller 40 and on / off of each part, that is, operation or stop. Is shown.

  In order to start power generation, the impeller 40 is first activated, and the rotational speed is increased to the first rotational speed R1 (220 rpm in the present embodiment). The control device 80 connects the impeller starting clutch 65 of the impeller starting device 60 and starts the motor 61. The control device 80 also activates the blower 22 substantially in parallel with this, and connects the motor activation portion clutch 71c of the jet engine activation device 70 to activate the jet engine 10 by the motor 71a. The control device 80 further opens the adjustment valve 33 of the water supply device 30 to generate a working fluid.

  As a result, the impeller 40 starts rotating upon receiving the rotational power of the motor 61 and the collision force of the working fluid, and accelerates to the first rotational speed R1 over the activation time T0 (for example, about 15 minutes). When the jet engine 10 is started, the control device 80 disconnects (releases) the motor starting portion clutch 71c to disconnect the jet engine starting device 70 from the jet engine 10 and stops the motor 71a.

  If the rotational speed of the impeller 40 increases to the first rotational speed R1, the control device 80 disconnects the impeller starting clutch 65 to disconnect the impeller starting device 60 from the impeller and stops the motor 61. To do. The control device 80 also stops the blower 22 and the jet engine 10 and closes the adjustment valve 33 of the water supply device 30 to stop the water supply. As a result, the impeller 40 rotates with inertial force. Next, the control device 80 connects the generator clutch 52. Thereby, the generator 50 receives the rotational power of the impeller 40 and rotates, and power generation is started. The generator clutch may be connected in advance before the rotation speed of the impeller 40 reaches the first rotation speed R1 or before the rotation of the impeller 40 starts.

  The impeller 40 rotated by the inertial force gradually decreases during power generation, and the rotational speed becomes the second rotational speed R2 (190 rpm in the present embodiment) after the lapse of the duration T1 (for example, about 54 minutes). It becomes. When the rotational speed of the impeller 40 reaches the second rotational speed R2, the blower 22 and the jet engine 10 are started, and the adjustment valve 33 of the water supply device 30 is opened to generate a working fluid. As a result, the impeller 40 is accelerated by receiving the working fluid, and the rotational speed reaches the first rotational speed R1 again after the acceleration time T2 (for example, 6 minutes) has elapsed.

  In this case, the jet engine 10 is started by connecting the transmission starting portion clutch 72c of the jet engine starting device 70 at a predetermined timing before the rotational speed of the impeller 40 reaches the second rotational speed R2. This is done by transmitting the rotational power of the impeller 40 to the jet engine 10. Further, when the jet engine 10 is started, the control device 80 disconnects the transmission starting portion clutch 72c and disconnects the jet engine starting device 70 from the jet engine.

  When the rotational speed of the impeller 40 reaches the first rotational speed R1, the control device 80 stops the blower 22 and the jet engine 10 and closes the adjustment valve 33 of the water supply device 30 to stop the water supply. To do. As a result, the impeller 40 is rotated again by the inertial force, and the rotation speed becomes the second rotation speed R2 after the duration T1 has elapsed. When the rotational speed of the impeller 40 reaches the second rotational speed R2, the control device 80 activates the blower 22 and the jet engine 10, and opens the adjustment valve 33 of the water supply device 30 to generate a working fluid. . As a result, the impeller 40 is accelerated again, and the rotation speed becomes the first rotation speed R1 after the acceleration time T2 has elapsed. Thereafter, power generation is continued by repeating this.

  In the power generation device 1 of the present embodiment, power generation is performed in this way. When stopping power generation, the control device 80 shuts off the generator clutch 52. At this time, when the jet engine 10 is operating, the control device 80 stops the jet engine 10. The impeller 40 is stopped by an appropriately provided brake or the like when maintenance or the like is necessary. Moreover, when it is not necessary to stop the impeller 40, the energy required for restarting the power generation can be reduced by continuing the rotation by the inertial force as it is.

  As described above, the power generation device 1 according to this embodiment receives the working fluid, the jet engine 10 that generates the gas flow, the water supply device 30 that supplies water to the gas flow to generate the working fluid, and the working fluid. A rotating impeller 40 and a generator 50 connected to the impeller 40 are provided. Further, in the power generation method according to the present embodiment, the generator 50 is rotated by the impeller 40 that rotates using a gas flow generated by the jet engine 10 mixed with water as a working fluid.

  With such a configuration, power generation can be performed more easily and efficiently. That is, since the temperature of the working fluid received by the impeller 40 can be lowered by mixing water with the high-temperature and high-pressure gas flow generated by the jet engine 10, the impeller 40 and its surroundings are simple and inexpensive. Can be configured. Further, since the working fluid having high density can be generated and the working fluid can be accelerated by evaporation and expansion of water, energy can be efficiently transmitted to the impeller 40 and rotated.

  Further, the power generation device 1 includes a flywheel (flywheel portion 48) that rotates together with the impeller 40. By doing in this way, rotation of impeller 40 can be stabilized. Further, since the energy of the working fluid can be stored in the impeller 40, the operation time of the jet engine 10 and the water supply device 30 is shortened, the fuel consumption and the water consumption are reduced, and each part has a long life. Can be

  The power generation device 1 also includes an activation device (jet engine activation device 70) that transmits the rotation of the flywheel to the jet engine 10 to activate the jet engine 10. By doing in this way, since it becomes possible to start the jet engine 10 with the rotational power before converting into electric power, power generation efficiency can be improved.

  The power generation device 1 stops the jet engine 10 when the rotational speed of the impeller 40 rises to the first rotational speed R1 while the jet engine 10 is operating, and the rotational speed of the impeller 40 while the jet engine 10 is stopped. Is provided with a control device 80 for starting the jet engine 10 when the engine speed decreases to the second rotational speed R2. By doing in this way, the impeller 40 can be stably rotated and stable power generation can be performed while the fuel consumption and the water consumption are minimized.

  Further, the power generation device 1 includes a guide pipe 13 that guides a gas flow toward the impeller 40, and the water supply device 30 is configured to supply water into the guide pipe 13. In this way, almost all of the generated steam can be directed to the impeller 40, so that the thermal energy of the gas flow from the jet engine 10 is efficiently converted into the kinetic energy of the working fluid. , Can be transmitted to the impeller 40.

  The impeller 40 has a plurality of blade rows (first blade row 42 and second blade row 43) that receive the working fluid in order. In this way, more energy can be transmitted from the working fluid to the impeller 40 and processing of the working fluid after use can be facilitated.

  The power generator 1 also includes a deflecting member 90 that deflects the working fluid flowing out from the blade row (first blade row 42) toward the next blade row (second blade row 43). By doing in this way, since it becomes possible to receive a working fluid reliably in a some blade row | line | column, the transmission efficiency of energy can be improved.

  The water supply device 30 includes a water storage tank 31 that stores natural water, and is configured to supply water using a head. By doing so, it is possible to efficiently use water that exists in nature, such as river water, for efficient power generation.

  Although the embodiments of the present invention have been described above, the power generation apparatus and the power generation method of the present invention are not limited to the above-described embodiments, and various modifications are made without departing from the scope of the present invention. Of course you get. For example, the shape and arrangement configuration of each part of the power generation device 1 are not limited to those shown in the above embodiment, and any other arbitrary shape and arrangement configuration can be adopted.

  Further, the shape of the impeller 40 may be any shape as long as it can be rotated by receiving the working fluid. Further, the impeller 40 may be of an axial flow type, a centrifugal type or a mixed flow type. Further, the impeller 40 may have three or more blade rows, or may be one. Moreover, you may make it provide several impeller 40 for every several blade row | line | column separately. Further, the working fluid that rotates the impeller 40 may be a gas-liquid two-phase flow containing water, or a gas flow in which all of the mixed water has become steam.

  Further, a plurality of jet engines 10 may be provided for one impeller 40. In this case, a dedicated blade row may be provided for each jet engine 10. Further, a plurality of impellers 40 may be provided for one jet engine 10 by branching the guide pipe 13 or the like. Further, two sets of the jet engine 10, the generator 50, and the like may be provided, and each set may be operated alternately. In this case, maintenance can be performed without stopping power generation.

  In addition, the functions and effects shown in the above embodiment are merely a list of the most preferable functions and effects resulting from the present invention, and the functions and effects of the present invention are not limited to these.

  The power generation apparatus and power generation method according to the present invention can be used not only for commercial power generation but also for private power generation and emergency power generation.

DESCRIPTION OF SYMBOLS 1 Power generator 10 Jet engine 13 Guidance piping 30 Water supply apparatus 31 Water storage tank 40 Impeller 42 1st blade row 43 2nd blade row 48 Flywheel part 50 Generator 70 Jet engine starting device 80 Control device 90 Deflection member R1 1st rotation speed R2 2nd rotation speed

Claims (7)

A jet engine for generating a gas flow;
A water supply device for supplying water to the gas flow to generate a working fluid;
An impeller that has a plurality of blade rows that sequentially receive the working fluid, and rotates by receiving the working fluid;
A deflection member that deflects the working fluid flowing out of the blade row toward the next blade row;
A generator connected to the impeller,
Power generation device. Comprising a flywheel that rotates with the impeller,
The power generation device according to claim 1. It comprises an activation device that transmits rotation of the flywheel to the jet engine to activate the jet engine,
The power generation device according to claim 2. When the rotational speed of the impeller rises to a first rotational speed during operation of the jet engine, the jet engine is stopped, and the rotational speed of the impeller decreases to a second rotational speed while the jet engine is stopped. And a control device for starting the jet engine.
The power generator according to claim 2 or 3. Comprising a guide pipe for guiding the gas flow toward the impeller,
The water supply device is configured to supply water into the guide pipe,
The power generator according to any one of claims 1 to 4. The water supply device includes a water storage tank for storing natural water, and is configured to supply water using a head.
The power generator according to any one of claims 1 to 5 . A power generation method in which a generator is rotated by an impeller rotating as a working fluid by mixing water with a gas flow generated by a jet engine ,
The impeller has a plurality of blade rows that sequentially receive the working fluid;
The power generation method characterized in that the working fluid flowing out from the blade row is deflected toward the next blade row by a deflecting member .

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