JP2009068367A - Power generating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power generating device that prevents driving torque on a driving machine side from being excessive, or, in the event of the occurrence of a defect due to excessiveness of the driving torque, minimizes the influence, and facilitates later maintenance. <P>SOLUTION: This power generating device is provided with a first pressure sensor 52, a second pressure sensor 56, a flow rate adjusting valve 44 for adjusting feeding pressure to a steam turbine 22, and a controller 28 having a detection value of steam feed pressure detected by the first pressure sensor 52 and a detection value of steam discharge pressure detected by the second pressure sensor 56 input therein, calculating the driving torque of the steam turbine 22 based on those detection values and the preset specific value of the turbine 22, and controlling the flow rate adjusting valve 44 to prevent this driving torque from exceeding the preset maximum load torque. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a power generator that further drives a power generator by a drive machine (drive source) such as a steam turbine driven by a fluid such as steam.

  In order to interconnect the power generation facilities, it is necessary to set the power generation frequency to a commercial frequency (50 Hz / 60 Hz). For this reason, when the commercial frequency is 60 Hz, the rotational speed of the generator is set to 3600 rpm.

  By the way, in the turbine which becomes a drive source of the generator, when the turbine is a gas turbine, the drive torque is determined by the amount of fuel gas (and air) to be supplied, and when the turbine is a steam turbine, it is supplied. The driving torque is determined by the amount of steam. The rotational speed of the generator is determined by this drive torque and the load torque on the generator side. However, even when the driving torque of the turbine is sufficiently large, the generator needs to be set to 3600 rpm as described above, so the fuel gas amount or steam amount is adjusted upstream of the turbine. An adjusting means is provided, and a speed reducer is provided on the drive shaft of the turbine.

  For example, Patent Document 1 below discloses a configuration in which a fuel flow control valve 120 that adjusts the fuel supply amount and a speed reducer 122 that decelerates the turbine rotational speed are provided, as shown in FIG. That is, the air compressed by the compressor 124 is supplied to the combustor 126 as combustion air, and the fuel is supplied to the combustor 126 via the fuel flow rate control valve 120 and combustion is performed. Combustion gas from the combustor 126 is introduced into the turbine 128 to rotationally drive the turbine 128, and the rotational speed is reduced by the speed reducer 122 provided on the drive shaft of the turbine 128 to drive the generator 130. It has become.

On the other hand, in Patent Document 2 below, as shown in FIG. 5, in a power generation apparatus using a gas turbine engine 140 as a drive source of a generator 142, power generated at a frequency higher than the commercial frequency is generated. Is converted to commercial frequency power by a power converter 144. That is, in this power generator, the generator 142 is configured by a generator capable of withstanding high-speed rotation, and the generator 142 is directly connected to the gas turbine engine 140, and the gas turbine engine 140 is connected at several tens of thousands rpm to several hundred thousand rpm. By driving at a rotational speed, high frequency power of about 1 kHz to 3 kHz is generated. The high-frequency power is once converted into DC power by the rectifier circuit 146, and further converted into AC output synchronized with the commercial frequency by the inverter 148 to be linked to the system.
JP 2000-170548 A JP 2002-84795 A

  As described above, the rotational speed of the generator is determined by the driving torque on the drive side and the load torque on the generator side, and consequently, the electric power generated by the generator is determined. Normally, there is an upper limit for the number of rotations allowed by the generator, and there is also an upper limit for the load torque on the generator side. In other words, there is also an upper limit for the drive torque on the drive side. Under such restrictions, it is important for the power generation apparatus to appropriately control the driving torque and secure the maximum power.

  However, it is often difficult to properly control the drive torque. In some cases, the drive torque described above becomes excessive, which may cause problems with the generator. However, Patent Document 1 and Patent Document 2 do not disclose any special measures for avoiding such a problem when the drive torque becomes excessive.

  Therefore, the present invention has been made in view of such points, and the object of the present invention is to prevent the drive torque on the drive side from becoming excessive, or in the unlikely event that the drive torque becomes excessive. An object of the present invention is to provide a power generation device that can reduce the influence as much as possible even if a problem occurs and can be easily maintained later.

  In order to achieve the above object, the present invention is a power generation apparatus that has a drive unit driven by a fluid and generates electricity by driving the generator with the drive unit, and the supply pressure of the fluid to the drive unit A supply pressure detecting means for detecting the discharge pressure, a discharge pressure detecting means for detecting the discharge pressure of the fluid from the drive machine, a pressure adjusting means for adjusting the supply pressure or the discharge pressure, and the supply pressure detecting means. The detected value of the detected supply pressure of the fluid and the detected value of the discharged pressure of the fluid detected by the discharge pressure detecting means are inputted, and based on the detected value and the preset specification value of the driving machine. And a control unit that calculates the driving torque of the driving machine and controls the pressure adjusting unit so that the driving torque does not exceed a preset maximum load torque.

  In the present invention, when the driving torque reaches the maximum load torque that can be absorbed by the preset generator, the pressure adjusting means is controlled to reduce the driving torque by reducing the differential pressure between the supply pressure and the discharge pressure. With this configuration, it is possible to prevent the drive torque on the driving machine side from becoming excessive, and it is possible to prevent problems associated with the drive torque being excessive. In addition, even if the drive torque may become excessive, the influence of the malfunction due to it can be minimized. As a result, subsequent maintenance can be facilitated.

  Here, it is preferable that the pressure adjusting means is an adjusting valve provided in a flow path on the fluid supply side of the driving machine. In this aspect, since the pressure of the fluid supplied to the drive machine can be directly adjusted, it is possible to easily prevent the drive torque from becoming excessive.

  Further, when the driving machine is driven by steam, an introduction pipe connected to the inlet side of the driving machine and a discharge pipe connected to the outlet side of the driving machine are provided, The introduction pipe and the discharge pipe are configured to be connectable to a main pipe that guides the steam generated by the steam generation means to the steam utilization facility. By connecting the introduction pipe and the discharge pipe to the main pipe, the main pipe is connected to the main pipe. It is preferable that the steam flowing through the pipe flows into the introduction pipe and is introduced into the drive unit, and the steam discharged from the drive unit is returned to the main pipe through the discharge pipe.

  In this aspect, since it is possible to generate power using steam before being introduced into the steam utilization facility, the steam generated by the steam generating means is effectively utilized while adjusting within the maximum load torque range of the drive unit. can do.

  As described above, according to the present invention, it is possible to prevent the driving torque on the driving machine side from becoming excessive, or to reduce the influence as much as possible even if the driving torque becomes excessive and a malfunction occurs. Therefore, it is possible to provide a power generator that can be easily maintained later.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows an embodiment of a power generator according to the present invention. As shown in the figure, the power generation device 20 generates power using steam energy generated by the steam generation means 10 and used by the steam utilization facility 12. This will be specifically described below.

  The steam generation means 10 and the steam utilization facility 12 are connected by a main pipe 14 through which steam flows. The main pipe 14 is provided with a pressure reducing valve 16.

  The steam generation means 10 is constituted by a plurality of boilers 10 a connected in parallel to the main pipe 14. Each of these boilers 10a has a steam generation amount of, for example, about 2 tons / hour, and each of the boilers 10a is constituted by, for example, a small once-through boiler.

  The steam utilization facility 12 is, for example, a water heater, a heater, a bath facility, a dryer, a cleaning facility, a kitchen device, a sterilizer, or the like that uses, for example, steam at about 150 to 200 ° C.

  The power generation apparatus 20 according to this embodiment includes a steam turbine 22, a generator 24, a frequency converter 26, a controller 28, a cooling means 30, and the like, which are housed in a casing 32. The casing 32 is provided with a ventilation fan 34.

  The steam turbine 22 is constituted by, for example, a screw expander. The steam turbine 22 is selected so that the maximum rotation speed obtained from the maximum supply amount of the target steam is within the range of the allowable rotation speed.

  The steam turbine 22 is provided with an introduction pipe 36 connected to the inlet side of the steam turbine 22 and an exhaust pipe 38 connected to the outlet side of the steam turbine 22. The introduction pipe 36 is connected to the upstream side of the pressure reducing valve 16 in the main pipe 14, and the discharge pipe 38 is connected to the downstream side of the pressure reducing valve 16 in the main pipe 14. Thereby, at least a part of the steam generated by the steam generating means 10 is introduced into the steam turbine 22, and the steam discharged from the steam turbine 22 is returned to the main pipe 14.

  The introduction pipe 36 is provided with an on-off valve 40, a drain separator 42, a flow rate adjustment valve 44, and an emergency shut-off valve 46 in order from the upstream side. The on-off valve 40 is disposed in the vicinity of the connection portion with the main pipe 14. The drain separator 42 is for separating the drain from the steam flowing through the introduction pipe 36. The flow rate adjusting valve 44 adjusts the flow rate of the steam flowing through the introduction pipe 36 and is configured to be open / close controlled by the controller 28. The flow rate adjusting valve 44 functions as pressure adjusting means for adjusting the supply pressure to the steam turbine 22. The emergency shut-off valve 46 completely shuts off the introduction pipe 36 and can be controlled by the controller 28.

  An opening / closing valve 50 is provided in the vicinity of the connection portion of the discharge pipe 38 with the main pipe 14. The on-off valve 50 and the on-off valve 40 of the introduction pipe 36 constitute switching means for switching whether to introduce the steam flowing through the main pipe 14 into the introduction pipe 36. That is, when the steam generated by the steam generation means 10 is directly introduced to the steam utilization facility 12, the on-off valves 40 and 50 are closed, and when the power generation using steam is performed, the on-off valves 40 and 50 are opened. The on-off valves 40 and 50 can be constituted by either an on-off valve that can be switched between a fully open state and a fully closed state, or an on-off valve that can be adjusted in opening. Further, as the switching means, a three-way switching valve may be provided in place of the on-off valves 40 and 50. In this case, the three-way switching valve is arranged at the connection between the main pipe 14 and the introduction pipe 36 and at the connection between the main pipe 14 and the discharge pipe 38.

  The introduction pipe 36 is provided with a first pressure sensor 52 that detects the pressure (supply pressure) of the steam introduced into the steam turbine 22. The discharge pipe 38 is provided with a second pressure sensor 56 that detects the pressure (discharge pressure) of the steam discharged from the steam turbine 22.

  A rotating shaft 60 of the generator 24 is coupled to a driving shaft 64 of the steam turbine 22 via a coupling 62. That is, the rotating shaft 60 of the generator 24 is connected to the drive shaft 64 of the steam turbine 22 without using a speed reducer. For this reason, the operating rotational speed of the generator 24 is the same as the rotational speed of the steam turbine 22.

  The electric power generated by the generator 24 is introduced into the frequency converter 26. The frequency converter 26 converts the frequency of the electric power generated by the generator 24. For example, the frequency converter 26 converts electric power of 10 to 100 Hz into electric power of a commercial frequency of 60 Hz. The frequency converter 26 converts alternating current generated by the generator 24 into direct current. The DC power is converted into a desired frequency, that is, commercial frequency power, and output. The electric power output from the frequency converter 26 is connected to the system 70 through the transformer 68.

  The cooling means 30 is for cooling the generator 24 and includes a circulation path 72 through which the coolant circulates. The circulation path 72 is provided with a coolant tank 74, a pump 75, and a cooler 76. The coolant tank 74 is for storing coolant. The pump 75 is for pumping the coolant in the coolant tank 74, and the coolant circulates in the circulation path 72 by driving the pump 75. The cooler 76 is for cooling the coolant introduced into the generator 24. The cooler 76 is provided with a cooling water passage 76a through which the cooling water flows, and the cooling water passage 76a. Cool the coolant with cooling water flowing through For example, oil is used as the cooling liquid.

  As shown in FIG. 2, the generator 24 includes a generator casing 80 having a barrel portion 80a formed in a substantially cylindrical shape and end wall portions 80b provided at both ends of the barrel portion 80a. The body 80a is installed on the coolant tank 74 so that the axial direction of the body 80a is horizontal. Cylindrical boss portions 80c projecting inward are provided on both end wall portions 80b of the generator casing 80, and the rotary shaft 60 passes through both boss portions 80c. The boss portion 80c is provided with a bearing 82, and the rotary shaft 60 is rotatable.

  The rotary shaft 60 is disposed so as to extend in the horizontal direction, extends outward from one boss portion 80 c (left side in FIG. 2), and is coupled to the drive shaft 64 of the steam turbine 22 via the coupling 62. Has been.

  The end wall portion 80b of the generator casing 80 is formed with an oil supply hole 80d extending from the upper end portion of the generator casing 80 into the boss portion 80c. Lubricating oil is supplied to the bearing 82 through the oil supply hole 80d. A shaft sealing portion 84 is provided on the boss portion 80c outside the bearing 82 in the axial direction so that the lubricating oil of the bearing 82 does not leak out of the casing. On the other hand, a communication passage 88 is provided at the lower end portion of the generator casing 80 so as to communicate the inside of the generator casing 80 and the upper opening 86 of the coolant tank 74 and flows out from the boss portion 80 c into the generator casing 80. The lubricated oil flows down into the cooling tank 74 through the communication path 88. That is, this lubricating oil is the same as that used as the coolant. Instead of the configuration in which the communication passage 88 is formed in the generator casing 80, a pipe (not shown) extending outward from the lower end of the generator casing 80 is provided, and the tip of this pipe is connected to the coolant tank 74. It may be configured.

  The generator 24 is constituted by an internal permanent magnet synchronous generator (IPM). That is, the stator 90 is fixed to the trunk portion 80 a of the generator casing 80, and the rotor 91 is provided on the inner peripheral side of the stator 90. A permanent magnet (not shown) is fitted inside the rotor 91, and the rotor 91 is fixed to the rotating shaft 60.

  A coil 93 is wound around the stator 90, and the coil 93 is connected to the electrical component port 95. The electrical component port 95 is connected to a wiring connected to the frequency converter 26. The coil 93 is provided with a temperature sensor (not shown). The temperature sensor is connected to the electrical port 96. Wires connected to the controller 28 are connected to the electrical port 96.

  The trunk portion 80a of the generator casing 80 is provided with an inlet port 98 and an outlet port 99. The inlet port 98 and the outlet port 99 are communicated with each other by a cooling path 100 formed in the trunk portion 80a. Yes. The inlet port 98 is provided on one side of the trunk portion 80a, and the end of the circulation path 72 on the cooler 76 side is connected. On the other hand, the outlet port 99 is provided on the other side of the trunk portion 80a, and the end of the circulation path 72 on the coolant tank 74 side is connected.

  The cooling path 100 is arranged at intervals in the axial direction and has a plurality of circumferential portions 100a extending in the circumferential direction in the body portion 80a, and an axial direction portion extending in the axial direction so as to communicate these circumferential portions 100a. 100b. Then, the coolant introduced through the inlet port 98 flows through the circumferential portion 100a and the axial portion 100b toward the outlet port 99. Thereby, the trunk | drum 80a of the generator casing 80 is cooled evenly.

  Here, the operation of the power generation device 20 will be described. The steam generated by driving each boiler 10 a flows through the main pipe 14, is decompressed by the decompression valve 16, and is then introduced into the steam utilization facility 12. When power generation is performed, the on-off valve 40 of the introduction pipe 36 and the on-off valve 50 of the discharge pipe 38 are opened, whereby a part of the steam generated in each boiler 10a and flowing through the main pipe 14 is introduced. It is diverted to the pipe 36. Even in this case, since the steam is sent to the steam utilization facility 12, the steam can be utilized in the steam utilization facility 12.

  The steam turbine 22 is driven by the steam diverted to the introduction pipe 36, and the rotating shaft 60 of the generator 24 rotates accordingly, and electric power is generated.

  As described above, the first pressure sensor 52 (that is, the supply pressure detecting means for detecting the supply pressure of the fluid) detects the pressure of the steam introduced into the steam turbine 22, and the second pressure sensor 56 (the discharge pressure of the fluid). The pressure of the steam exhausted from the steam turbine 22 is detected by the exhaust pressure detecting means).

  The controller 28 (that is, the control means) calculates the driving torque of the steam turbine 22 based on the detected values and the preset specification values of the steam turbine 22 (that is, the drive machine). Further, the controller 28 controls the flow rate adjusting valve 44 (that is, the pressure adjusting means) so that the driving torque does not exceed the preset maximum load torque that can be absorbed by the generator 24. That is, when the driving torque becomes close to the maximum load torque, the controller 28 adjusts the opening degree of the flow rate adjusting valve 44 so as to reduce the differential pressure between the supply pressure and the exhaust pressure so as to reduce the driving torque. It is configured.

  Hereinafter, the calculation of the driving torque of the steam turbine 22 and the opening degree control of the flow rate adjusting valve 44 will be specifically described.

When the steam turbine 22 is a positive displacement steam turbine such as a screw expander, for example, the axial torque Tg of the steam turbine 22 is expressed by the following equation (1).
Tg = 974 × (Nth−Nm) (1)
Is calculated by Here, Nth is theoretically generated power (kW), and Nm is mechanical loss (loss power of bearings, shaft seals, gears, etc.) (kW).

The theoretically generated power Nth is expressed by the following equation (2)
Nth = Nthi + NΔP (2)
Is calculated by Here, Nthi is the internal theoretical compression power (kW), and NΔP is the excess / deficiency expansion power (kW), which are shown in FIG. The internal theoretical compression power Nthi and excess / deficiency expansion power NΔP are expressed by the following equations (3) and (4).

で算出される。ここで、ｎはポリトロープ指数、Ｖｉは内部容積比、Ｖｔｈ２は排気工程体積（ｍ^３／ｒｅｖ）、Ｐ１は給気圧力（ｋｇ／ｃｍ^２Ａ）、Ｐ２は排気圧力（ｋｇ／ｃｍ^２Ａ）、Ｐ２ｉは内部排気圧力（ｋｇ／ｃｍ^２Ａ）である。なお、Ｐ２ｉ＝Ｐ１／Ｖｉ^κである。

Is calculated by Here, n is the polytropic index, Vi is the internal volume ratio, Vth2 is the exhaust process volume (m ³ / rev), P1 is the supply pressure (kg / cm ² A), and P2 is the exhaust pressure (kg / cm ² A) , P2i is the internal exhaust pressure (kg / cm ² A). It should be noted, it is a P2i = P1 / Vi ^κ.

In the above formulas (3) and (4), except for the supply pressure (supply pressure) P1 and the exhaust pressure (exhaust pressure) P2, since the constants are known in advance, the supply pressure P1 and the exhaust pressure P2 should be monitored. Thus, the shaft torque Tg of the steam turbine 22 can be calculated. In addition, when it has a reduction gear, let the reduction ratio be rg, and the generator torque T is
T = rg × Tg (5)
Can be calculated as The air supply pressure P1 is controlled by adjusting the opening of the flow rate adjustment valve 44 so that this torque does not exceed the “shaft torque allowed by the generator”.

  That is, the maximum load torque Tth is set in the controller 28 from the value of “shaft torque allowed by the generator” determined in advance from the specifications of the generator 24. The maximum load torque Tth may be equivalent to the “shaft torque allowed by the generator” or may be a value slightly lower than the “shaft torque allowed by the generator”.

  Then, the controller 28 calculates a drive torque T (or Tg) based on the above formulas (1) to (5) from the input supply pressure P1 and the exhaust pressure P2. The calculated drive torque T (or Tg) is compared with the maximum load torque Tth. As a result, when the drive torque T (or Tg) is larger than the maximum load torque Tth, the controller 28 adjusts the current flow rate adjustment. From the opening value of the valve 44, the driving torque T (or Tg), and the maximum load torque Tth, the opening degree of the flow regulating valve 44 to be adjusted is calculated by PID calculation, and a corresponding control signal is sent to the flow regulating valve. Call 44. Thereby, the opening degree of the flow rate adjusting valve 44 is adjusted, and the steam turbine 22 is driven within the range of “shaft torque allowed by the generator”.

  During operation of the generator 24, the temperature in the generator 24 is detected by a temperature sensor (not shown), and the coolant circulates in the circulation path 72. That is, the cooling liquid in the cooling liquid tank 74 is sent out by driving the pump 75, is cooled by the cooling water in the cooling water passage 76 a in the cooler 76, and the cooled cooling liquid is introduced into the generator 24. Then, the coolant flows through the circumferential portion 100a and the axial portion 100b of the cooling path 100 via the inlet port 98, and cools the trunk portion 80a of the generator casing 80 evenly. Thereby, the heat_generation | fever of the generator 24 can be suppressed efficiently. The coolant flowing through the cooling path 100 flows through the circulation path 72 via the outlet port 99 and returns to the cooling liquid tank 74. The coolant continues this circulation.

  The electric power generated by the generator 24 is output to the frequency converter 26 through the electric equipment port 95. The frequency of this power is, for example, 10 to 100 Hz. This power is converted into commercial frequency power by the frequency converter 26 and output, and is connected to the system 70 through the transformer 68.

  As described above, according to the present embodiment, when the driving torque T (or Tg) reaches the preset maximum load torque Tth that can be absorbed by the generator 24, the pressure adjusting means is controlled to supply air. Since the driving pressure T (or Tg) is reduced by reducing the differential pressure between the pressure P1 and the exhaust pressure P2, the driving torque T (or Tg) on the steam turbine 22 side is excessive. It is possible to prevent the occurrence of problems associated with the excessive driving torque T (or Tg). Moreover, even if the driving torque T (or Tg) may become excessive, the influence of the malfunction caused by it can be reduced as much as possible. As a result, subsequent maintenance can be facilitated.

  Moreover, in this embodiment, the pressure adjusting means is constituted by the flow rate adjusting valve 44 provided on the supply side of the steam turbine 22, so that the pressure of the steam supplied to the steam turbine 22 can be directly adjusted. it can. For this reason, it can be made easy to prevent the drive torque T (or Tg) from becoming excessive.

  Moreover, in this embodiment, since it can generate electric power using the steam before introduce | transducing into the steam utilization equipment 12, it produces | generates with the steam production | generation means 10, adjusting within the maximum load torque range of the steam turbine 22. FIG. The used steam can be used effectively.

  The present invention is not limited to the present embodiment, and various changes and improvements can be made without departing from the spirit of the present invention. For example, in this embodiment, the drive machine which drives a generator was comprised as the steam turbine 22, However, It is not restricted to this. In other words, any driving machine whose driving torque varies depending on the fluid supply pressure and the discharge pressure may be used. For example, instead of the flow rate adjustment valve 44 provided in the introduction pipe 36, a flow rate adjustment valve may be provided in the discharge valve 38 and the flow rate of steam flowing through the discharge valve 38 may be adjusted by opening / closing control by the controller 28.

  Further, in order to convert alternating current generated by the generator 24 into direct current, a pulse generator is provided at the end of the rotating shaft 60 so that the frequency converter 26 performs the above conversion according to the output value from the pulse generator. You may comprise.

It is a figure showing roughly the whole composition of the power generator concerning the embodiment of the present invention. It is sectional drawing which shows the generator and cooling fluid tank which were provided in the said electric power generating apparatus. It is a special drawing for demonstrating internal theoretical compression power Nthi and excess / deficiency expansion power N (DELTA) P. It is a figure which shows the structure of the conventional electric power generating apparatus. It is a figure which shows the structure of the conventional electric power generating apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Steam production | generation means 12 Steam utilization equipment 14 Main piping 20 Power generator 22 Steam turbine (an example of a drive machine)
24 generator 28 controller (an example of control means)
36 Introduction pipe 38 Drain pipe 44 Flow rate adjustment valve (an example of pressure adjustment means)
52 1st pressure sensor (an example of supply pressure detection means)
56 Second pressure sensor (an example of discharge pressure detecting means)

Claims (3)

A power generator that has a drive machine driven by a fluid and generates power by driving a generator by the drive machine,
Supply pressure detecting means for detecting a supply pressure of fluid to the drive unit;
A discharge pressure detecting means for detecting a discharge pressure of the fluid from the driver;
Pressure adjusting means for adjusting the supply pressure or the discharge pressure;
The detection value of the fluid supply pressure detected by the supply pressure detection means and the detection value of the fluid discharge pressure detected by the discharge pressure detection means are inputted, and these detection values and the preset driving machine are input. And a control means for controlling the pressure adjusting means so as to prevent the drive torque from exceeding a preset maximum load torque. apparatus.   The power generation device according to claim 1, wherein the pressure adjusting unit is an adjusting valve provided in a flow path on a fluid supply side of the driving machine. The driving machine is driven by steam,
An introduction pipe connected to the inlet side of the driving machine and a discharge pipe connected to the outlet side of the driving machine are provided;
The introduction pipe and the discharge pipe are configured to be connectable to a main pipe that guides the steam generated by the steam generation means to the steam utilization facility,
By connecting the introduction pipe and the discharge pipe to the main pipe, steam flowing through the main pipe flows into the introduction pipe and is introduced into the driver, and the steam discharged from the driver is discharged into the discharge pipe. The power generation device according to claim 1, wherein the power generation device is returned to the main pipe.

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