JP6543873B2 - Waste heat generation system - Google Patents

Description

  The present invention relates to a waste heat power generation system.

  BACKGROUND Conventionally, energy saving is achieved by recovering thermal energy (waste thermal energy) of waste heat released to the atmosphere and performing power generation, and reusing electrical energy obtained by this power generation. Conventionally, waste heat of about 300 ° C. or more (in some cases, near 1000 ° C.) is used for power generation because it is easy to generate high pressure steam for driving a generator, and low temperature waste of about 300 ° C. or less Much of the heat was still released to the atmosphere.

  Patent Document 1 below discloses a waste heat power generator that generates power using waste heat energy of low temperature waste heat of 300 ° C. or less according to a Rankine cycle using a low boiling point working medium. Specifically, a waste heat power generator disclosed in Patent Document 1 below includes a waste heat recovery unit, a steam turbine, a condenser, and a high pressure pump, and low temperature waste heat recovered by the waste heat recovery unit Thus, high-pressure steam of a low boiling point working medium is generated by this, and the high-pressure steam drives a steam turbine to generate power. The exhaust of the steam turbine is condensed and liquefied by a condenser, and the liquefied low boiling point working medium is sent to a waste heat recovery device for circulation.

  Most of such waste heat power generators are provided with incidental equipment which is equipment necessary for operating the waste heat power generators. As this incidental facility, for example, a pump for supplying low-temperature waste heat to a waste heat recovery device of a waste heat power generator, a pump for supplying cooling water to a condenser of a waste heat power generator, discharge from a condenser of waste heat power generator And a cooling tower for cooling the cooling water. The incidental equipment is provided as an adjunct to the waste heat power generator, but since the waste heat electric power generator and the incidental equipment are separate devices, the operation panel and control can be applied to both the waste heat electric power generation and the incidental equipment. An apparatus etc. are provided.

JP 2000-110514 A

  By the way, in recent years, as exemplified in the following (1) to (3), in order to enhance convenience, added value, performance, etc., it is necessary to link waste heat power generation equipment and incidental equipment. .

(1) Improving the convenience by unifying the operation system of the waste heat power generation equipment and the incidental equipment Currently, when operating the waste heat generation electric power device, it is provided on the operation panel and incidental equipment provided in the waste heat generation power device It is necessary to operate separately from the operation panel. If it is possible to unify the operation panel provided in the waste heat power generation apparatus and the operation panel provided in the incidental equipment, for example, only by operating the operation panel provided in the incidental equipment, an instruction to the incidental equipment and waste heat generation It can be considered that both the instruction to the device and the convenience can be enhanced.

(2) Increase in added value by enabling remote monitoring Waste heat power generators are often installed in remote places such as hot spring areas because of the features of the devices, so surveillance personnel need to generate waste heat power. It is difficult to constantly monitor the operating condition of the waste heat power generation system by visiting the installation site of the apparatus. If the operating condition of such a waste heat power generator can be remotely monitored, it is possible to constantly monitor the operating condition of the waste heat power generator and incidental equipment from remote areas, and it is considered that added value can be enhanced. . Here, the waste heat power generation device can not operate alone. In order to operate the waste heat power generation device, it is necessary to link the waste heat power generation device and the incidental facility. As described above, since the waste heat power generation apparatus operates in cooperation with the incidental equipment, it is necessary to link and monitor the operating states of the waste heat electric generation device and the incidental equipment when performing the above-mentioned remote monitoring.

(3) Enhancing performance by realizing optimal control of waste heat power generators including incidental facilities Currently, the operation of waste heat power generators and incidental facilities are individualized based on the instructions from the operation panel provided in each Is controlled by If waste heat power generation equipment and incidental equipment are linked and control of incidental equipment is performed according to the operating condition of waste heat generation, control such that optimum power generation is carried out with waste heat electricity generation (optimum Control) is realized, and it is considered that the performance can be enhanced.

  Here, in order to link the waste heat power generation apparatus and the accessory equipment, the control apparatus of the waste heat power generation apparatus and the control apparatus of the accessory equipment are connected, and various signals (operation signal, measurement signal, control) It is considered good if communication of signals etc.) is enabled. However, if such a connection is made, the control device provided in the waste heat power generation device must perform processing related to communication while performing the control of the original waste heat power generation device. It is conceivable that the load on the device may increase and cause problems in the control of the original waste heat power generation device.

  Further, in order to realize communication between the control device of the waste heat power generation device and the control device of the incidental equipment, it is necessary to add a communication function to the program used in the control device of the waste heat generation device. In a program to which such a communication function is added, it is necessary to perform verification of "whether the conventional function operates correctly" and verification of "whether the newly added function operates correctly". The problem of requiring a great deal of labor and a long time arises.

  The present invention has been made in view of the above circumstances, and provides a waste heat power generation system capable of causing the waste heat power generation apparatus and the incidental facility to cooperate with each other without causing any problem in control of the waste heat power generation apparatus. The purpose is

In order to solve the above problems, the waste heat power generation system (1, 2) according to the present invention includes a first control device (C1) that performs reception of a first signal related to operation and transmission of a second signal related to measurement control. A waste heat power generation device (10) including a first operation display device (P1) for transmitting the first signal to the first control device and receiving the second signal from the first control device; And a second control device (C2) capable of communicating with the first operation display device and controlling incidental equipment attached to the waste heat power generation device, the first operation display device comprising the second control device. The operation signal transmitted from the device is transmitted as the first signal to the first control device, and the second signal is transmitted to the second control device in response to the request signal transmitted from the second control device. Do.
Further, in the waste heat power generation system of the present invention, the first operation display device stores the second signal transmitted from the first control device and the operation signal transmitted from the second control device. A storage unit (M) is provided.
Further, a waste heat power generation system according to the present invention includes a second operation display device (P2) that is communicable with the second control device and outputs the operation signal and the request signal to the second control device. .
Here, in the waste heat power generation system of the present invention, the second operation display device outputs an operation signal indicating start or end of operation of the waste heat power generation device and the incidental facility, and the second control device Control of start or end of operation of the incidental facility is performed based on the operation signal output from the second operation display device, and the operation signal is transmitted to the first operation display device, and the first control device Controls the operation start or the operation end of the waste heat power generator based on the operation signal transmitted as the first signal from the first operation display device.
Alternatively, in the waste heat power generation system according to the present invention, the second operation display device outputs a request signal requesting transmission of the second signal, and the second control device is output from the second operation display device. And transmits the second signal transmitted from the first operation display device to the second operation display device in response to the request signal.
Alternatively, in the waste heat power generation system according to the present invention, the second control device transmits a request signal for requesting transmission of the second signal to the first operation display device, and the first control display device responds to the request signal. The incidental equipment is controlled based on the second signal transmitted from the operation display device.
Further, a waste heat power generation system according to the present invention includes a line concentrator (H) connecting the first operation display device, the second operation display device, and the second control device.
Further, a waste heat power generation system according to the present invention includes a plurality of the waste heat power generation devices.

  According to the present invention, there is provided a first operation display device (an apparatus for transmitting and receiving a first signal relating to an operation with a first control device and a second signal relating to measurement control) provided in a waste heat power generation device (2) The control device is configured to be communicable, and the first operation display device transmits the operation signal transmitted from the second control device as the first signal to the first control device, and is transmitted from the second control device The second signal is transmitted to the second control device in response to the incoming request signal. For this reason, there is an effect that it is possible to cooperate the waste heat power generation device and the incidental facility without causing any trouble in the control of the waste heat power generation device.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the whole structure of the waste heat electric power generation system by 1st Embodiment of this invention. It is a block diagram which simplifies and shows the structure of the waste heat electric power generating apparatus provided in the waste heat electric power generation system by 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the principal part structure of the waste heat electric power generation system by 1st Embodiment of this invention. It is a block diagram which shows the principal part structure of the waste heat electric power generation system by 2nd Embodiment of this invention.

  Hereinafter, a waste heat power generation system according to an embodiment of the present invention will be described in detail with reference to the drawings.

First Embodiment
FIG. 1 is a block diagram showing an entire configuration of a waste heat power generation system according to a first embodiment of the present invention. As shown in FIG. 1, the waste heat power generation system 1 of the present embodiment includes a waste heat power generation device 10 and an incidental facility 20, and is installed in, for example, a hot spring resort or a factory, and a waste heat medium In the present embodiment, waste heat energy of “hot water X” is recovered and power generation is performed. The waste heat medium is not limited to the hot water X, and a gas released from a factory or the like can also be used.

  The waste heat power generation apparatus 10 is supplied with the above-described warm water X and a cooling medium (referred to as “cooling water Z” in the present embodiment) from the outside, and recovers waste heat energy of the warm water X to generate power. FIG. 2 is a block diagram showing a simplified configuration of a waste heat power generation device provided in the waste heat power generation system according to the first embodiment of the present invention. As shown in FIG. 2, the waste heat power generation device 10 is a power generation device using a Rankine cycle provided with an evaporator 11, an expansion turbine generator 12, a condenser 13, a reservoir tank 14, and a pump 15.

  In addition, the waste heat power generation apparatus 10 is provided with an AC / DC converter 16 and a DC / AC converter 17, and the power generated by the expansion turbine generator 12 is converted into three-phase AC power of the same specifications as commercial power. Convert. In addition, the waste heat power generation device 10 includes a measuring device 18, a control device 19, and a sensor S1, and the amount of power generation of the expansion turbine generator 12 per unit time (for example, second) and the expansion turbine generator 12 Based on the measurement results of the temperature and pressure of the working medium Y supplied, the drive of the pump 15 is controlled so that the largest amount of power can be generated from the waste heat energy of the hot water X. The waste heat power generation device 10 includes sensors S2 and S3 in addition to the sensor S1 described above.

  In the evaporator 11, for example, the hot water X supplied from a heat source in a hot spring site or a factory and the working medium Y delivered from the pump 15 are supplied through different paths, and heat exchange is performed internally. Generate steam. That is, the evaporator 11 recovers the waste heat energy of the hot water X and generates the steam of the working medium Y. Although one evaporator 11 is illustrated in FIG. 2, the number of evaporators 11 may be two or more.

  Here, the working medium Y is a medium having a boiling point (boiling point under atmospheric pressure conditions) of about 15 ° C., and the pressure inside the device during operation is at most 1 MPa (G) (1 MPa in gauge pressure) or less Is desirable. The reason is that, for example, it is possible to generate steam from low-temperature waste heat to enable power generation using waste heat energy of low-temperature waste heat of about 100 ° C. or less, and the expansion turbine by keeping the pressure of the entire device low. This is to keep the internal pressure of the generator 12 low. As such a working medium Y, for example, hydrofluoroether (HFE), fluorocarbon, fluoroketone, perfluoropolyether and the like can be used.

  The expansion turbine generator 12 includes a turbine 12 a and a generator 12 b, and generates three-phase AC power using the working medium Y in a vaporized state supplied from the evaporator 11. The turbine 12 a is a rotary machine that rotates a turbine impeller by the supply of the working medium Y from the evaporator 11. The generator 12b includes a rotor coupled to the shaft of the turbine impeller, and a stator provided so as to surround the outer periphery of the rotor, and the rotor is rotationally driven by the turbine 12a. Generates three-phase AC power. In the three-phase AC power output from the generator 12b, at least one of the frequency and the output voltage is different from the specification of the commercial power.

  In the condenser 13, the working medium Y discharged from the expansion turbine generator 12 and the above-described cooling water Z are supplied through separate paths, and heat exchange is performed internally to cool and condense the working medium Y. Do. Although one condenser 13 is illustrated in FIG. 2, the number of condensers 13 may be two or more. The reservoir tank 14 is a tank that temporarily stores the working medium Y condensed by the condenser 13. The pump 15 pressurizes the working medium Y condensed in the condenser 13 and temporarily stored in the reservoir tank 14 and delivers it to the evaporator 11.

  The AC / DC converter 16 and the DC / AC converter 17 convert the three-phase AC power generated by the generator 12b into three-phase AC power (for example, 50/60 Hz, 200 V class) conforming to the specifications of the commercial power belongs to. The AC / DC converter 16 converts three-phase AC power output from the generator 12 b into DC power and outputs the DC power to the DC / AC converter 17. The DC / AC converter 17 converts DC power from the AC / DC converter 16 into three-phase AC power conforming to the specifications of commercial power.

  The measuring device 18 measures the current flowing through the DC / AC converter 17 to measure the amount of power generation of the expansion turbine generator 12 per unit time (for example, in seconds). Here, the measuring device 18 may measure the amount of power generation of the expansion turbine generator 12 per unit time by measuring the current flowing through the AC / DC converter 16. In addition, the measuring device 18 has a noise filter so as not to pick up noise of power generation amount (for example, noise on the order of μsec).

  The sensor S1 includes a temperature sensor S11 and a pressure sensor S12. The sensor S1 is attached to a pipe connecting the evaporator 11 and the expansion turbine generator 12, and the temperature of the working medium Y supplied to the expansion turbine generator 12 Measure the pressure. The sensor S 1 may be attached to the outlet of the working medium Y in the evaporator 11 or the inlet of the working medium Y in the expansion turbine generator 12.

  The sensor S2 is attached to a pipe that supplies the warm water X to the evaporator 11, and measures the temperature of the warm water X (the temperature of the warm water X before being supplied to the evaporator 11). The sensor S3 is attached to a pipe that supplies the cooling water Z to the condenser 13, and measures the temperature of the cooling water Z (the temperature of the cooling water Z before being supplied to the condenser 13).

  The control device 19 integrally controls the operation of the waste heat power generation device 10. For example, based on the measurement results of the measuring device 18 and the sensor S1 (the temperature sensor S11 and the pressure sensor S12), the control device 19 is a unit of the pump 15 so as to generate most power from waste heat energy of the hot water X. The number of revolutions per hour (circulation amount of working medium Y) is controlled. Further, the control device 19 creates log data indicating the operating state of the waste heat power generation device 10.

  For example, the control device 19 is a sensor S1 (temperature sensor S11 and pressure sensor S12), and data indicating measurement results obtained at regular time intervals from the sensors S2, S3, etc., and an operation state of devices constituting the waste heat power generation device 10. Data indicating the on / off state of the device, data indicating the state of the signal used in the waste heat power generation device 10 (eg, data indicating the on / off state of the signal), generation of an alarm Log data is created using data indicating the situation.

  Returning to FIG. 1, the incidental facility 20 is a facility that is provided to accompany the waste heat power generation device 10 and is necessary for operating the waste heat generation device 10. As the incidental equipment 20, for example, the pump 21 for supplying the hot water X to the evaporator 11 of the waste heat power generator 10, the pump 22 for supplying the cooling water Z to the waste heat power generator 10, and the condenser 13 of the waste heat power generator 10 The cooling tower 23 for cooling the cooling water Z discharged | emitted from these, etc. are mentioned. Moreover, the control apparatus 24 which controls additional equipment 20 (The said pump 21, the pump 22, and the cooling tower 23) is also provided.

  Next, the configuration of the operation display system and the control system of the waste heat power generation system 1 will be described in detail. FIG. 3 is a block diagram showing the main configuration of the waste heat power generation system according to the first embodiment of the present invention. As shown in FIG. 3, the waste heat power generation device 10 includes an internal device D1, a control device C1 (first control device), and an operation display device P1 (first operation display device). Further, the incidental equipment 20 includes an incidental device D2, a control device C2 (second control device), a line concentrator H, and an operation display device P2 (second operation display device).

  The internal device D1 is a device provided inside the waste heat power generation device 10, and is, for example, a measurement device 18 and sensors S1 to S3 and the like shown in FIG. The control device C1 includes a configuration (a control device 19 or the like illustrated in FIG. 2) for controlling the waste heat power generation device 10. The control device C1 receives an operation signal (first signal) transmitted from the operation display device P1, and transmits a measurement control signal (second signal) to the operation display device P1. Here, the measurement control signal described above is a signal including various measurement signals obtained from the internal device D1, various control signals generated by the control device C1, and the log data described above.

  The operation display device P1 includes, for example, a touch panel in which an operation function and a display function are integrally formed, is connected to the control device C1, and performs various settings based on an instruction of the worker. Display the operating condition etc. The operation display device P1 is also connected to a concentrator H (for example, a hub) provided in the incidental facility 20. The operation display device P1 is connected to the control device C1 via a serial communication line such as RS-232C, for example, and is connected to the line concentrator H via a communication line such as Ethernet (registered trademark).

  The operation display device P1 temporarily stores a measurement control signal transmitted from the control device C1 and a signal (for example, an operation signal) transmitted from the controller C2 of the incidental facility 20 via the concentrator H. Memory M (storage unit). As this memory M, for example, a non-volatile memory such as a flash memory can be used.

  When an operation signal is transmitted from the control device C2, the operation display device P1 temporarily stores the operation signal in the memory M and then transmits the operation signal to the control device C1. When a signal requesting transmission of the measurement control signal is transmitted from the control device C2, the operation display device P1 responds to the request signal to control the measurement control signal stored in the memory M as the control device C2. Send to Here, the process performed by the control device C1 and the process performed by the operation display device P1 are independent of each other. For this reason, for example, the communication processing performed between the control device C1 and the operation display device P1 does not cause a problem that the control of the waste heat power generation device 10 performed by the control device C1 is hindered.

  The incidental device D2 is various devices provided in the incidental equipment 20, and is, for example, the pumps 21, 22 and the cooling tower 23 shown in FIG. The control device C2 includes a configuration (a control device 24 or the like illustrated in FIG. 1) for controlling the incidental facility 20. The process performed by the control device C1 of the waste heat power generation device 10 and the process performed by the control device C2 of the incidental facility 20 are independent of each other. The control device C2 is connected to the concentrator H via a communication line such as Ethernet (registered trademark), for example.

  Specifically, when the operation display device P2 outputs an operation signal indicating the start or end of operation of the waste heat power generation device 10 and the incidental facility 20, the control device C2 determines the incidental device D2 based on the operation signal. Control of the operation start or the operation end, and transmits this operation signal to the operation display device P1. In addition, when the request signal for requesting transmission of the measurement control signal is output from the operation display device P2, the control device C2 transmits the request signal to the operation display device P1 and the operation according to the request signal. The measurement control signal transmitted from the display device P1 is transmitted to the operation display device P2. Such processing is performed to unify the operation system (including the display system) of the waste heat power generation device 10 and the incidental facility 20 to enhance the convenience.

  Further, the control device C2 transmits a request signal requesting transmission of the measurement control signal to the operation display device P1, and acquires the measurement control signal transmitted from the operation display device P1 in response to the request signal. Such processing is performed in order to increase added value by enabling remote monitoring of the waste heat power generation system 1. Further, the control device C2 controls the incidental equipment based on the acquired measurement control signal. Such control is performed in order to improve the performance by realizing the optimal control of the waste heat power generation device 10 including the incidental facility 20.

  The operation display device P2 includes a touch panel similar to the operation display device P1 provided in the waste heat power generation device 10, is connected to the concentrator H, and performs various settings based on a worker's instruction, waste heat generation, The operation states of the device 10 and the incidental equipment 20 are displayed. Thus, the operation display device P1, the operation display device P2, and the control device C2 are mutually connected by the line concentrator H. For example, the operation display device P2 outputs an operation signal indicating start of operation or end of operation of the waste heat power generation device 10 and the incidental facility 20 or a request signal requesting transmission of a measurement control signal according to an instruction of the worker .

  Next, the operation of the waste heat power generation system 1 with the above configuration will be described. In the following, the operation at the start of operation of the waste heat generation system 1 (operation at the start of operation), the operation at the time of display of the operation state of the waste heat generation system 1 (operation at the display of operation state), and the optimal control of the waste heat generation system The operation (operation at the time of optimum control) for realizing the above will be described in order.

<Operation at the start of operation>
The operation of the waste heat power generation system 1 is started by the operator operating the operation display device P2 provided in the incidental facility 20 to issue an operation start instruction. When the operator gives an instruction to start the operation, an operation signal (an operation signal indicating the start of operation of the waste heat power generation device 10 and the incidental facility 20) indicating that is output from the operation display device P2, and the concentrator H is used. Is input to the control device C2. Then, the accessory device D2 is controlled by the control device C2 to start the operation of the accessory facility 20, and the operation signal from the operation display device P2 is transmitted to the operation display device P1.

  The operation signal transmitted from the control device C2 is received by the operation display device P1 after passing through the line concentrator H and stored in the memory M. Then, the operation signal stored in the memory M is read and transmitted to the control device C1. When the operation signal transmitted from the operation display device P1 is received by the control device C1, the waste heat power generation device 10 is controlled by the control device C1 and the operation of the waste heat generation device 10 is started. Thus, the operation of the waste heat power generation system 1 including the waste heat power generation device 10 and the accessory device 20 is started only by the instruction to the operation display device P2 provided in the accessory facility 20.

  When the operation of the waste heat power generation system 1 is started, the pumps 21 and 22 of the incidental equipment 20 supply the hot water X and the cooling water Z to the waste heat power generation device 10. Further, in the waste heat power generation device 10, the working medium Y is liquid while the working medium Y circulates in the order of the evaporator 11 → the expansion turbine generator 12 → the condenser 13 → the reservoir tank 14 → the pump 15 → the evaporator 11. The power generation in the expansion turbine generator 12 is performed by changing the state into a gas.

  That is, the working medium Y evaporated by the heat of the hot water X supplied to the evaporator 11 is condensed by the cooling water Z supplied to the condenser 13 after being supplied to the expansion turbine generator 12 and is stored in the reservoir tank 14 After being temporarily stored, it is again delivered to the evaporator 11 via the pump 15. In the process of such cyclical state change of the working medium Y, the expansion turbine generator 12 is driven by the working medium Y to generate power. Then, the three-phase AC power generated by the expansion turbine generator 12 is converted into three-phase AC power conforming to the specification of commercial power by the AC / DC converter 16 and the DC / AC converter 17 and supplied to the outside. Ru.

  It should be noted that if the operator operates the operation display device P2 provided in the incidental facility 20 and instructs the operation termination while the operation of the waste heat generation system 1 is being performed, the operation of the waste heat generation system 1 can be performed. You can end the operation. That is, when the operator instructs the operation display device P2 to end the operation, the same operation as the operation at the start of the operation described above is performed, and waste including the waste heat power generation device 10 and the incidental device 20 The operation of the thermal power generation system 1 is stopped.

<Operation when displaying operating status>
The display of the operation state of the waste heat power generation device 10 is performed by the operator operating the operation display device P2 provided in the incidental facility 20 to switch the display screen of the operation display device P2 to the state display screen. Here, the above-mentioned state display screen is a screen prepared in advance in the operation display device P2 to display the operating state of the waste heat power generation device 10.

  When the operator performs an operation to switch the display screen of the operation display device P2 to the state display screen, a request signal requesting transmission of the measurement control signal is output from the operation display device P2, and the control device via the concentrator H It is input to C2. When a request signal from the operation display device P2 is input to the control device C2, the request signal is transmitted from the control device C2 to the operation display device P1.

  The request signal transmitted from the control device C2 is received by the operation display device P1 after passing through the concentrator H. Then, the process of reading out the measurement control signal corresponding to the received request signal from the memory M and transmitting it to the control device C2 is performed by the operation display device P1. The measurement control signal transmitted from the operation display device P1 is received by the control device C2 after passing through the concentrator H, and then transmitted toward the operation display device P2. The measurement control signal transmitted from the control device C2 is received by the operation display device P2 after passing through the line concentrator H. And the process which displays the information which shows the driving | running state of the waste heat electric power generating apparatus 10 on a state display screen is performed by the operation display apparatus P2. Thus, the operating state of the waste heat power generation device 10 is displayed on the operation display device P2 provided in the incidental facility 20.

<Operation at optimal control>
When the optimum control is performed, a request signal requesting transmission of the measurement control signal is transmitted from the control device C2 to the operation display device P1. The request signal transmitted from the control device C2 is received by the operation display device P1 after passing through the concentrator H. Then, the process of reading out the measurement control signal corresponding to the received request signal from the memory M and transmitting it to the control device C2 is performed by the operation display device P1.

  The measurement control signal transmitted from the operation display device P1 is received by the control device C2 after passing through the concentrator H. When the measurement control signal from the operation display device P1 is received, the control device C2 performs a process of determining the current operating state of the waste heat power generation device 10 based on the received measurement control signal. Here, examples of the operating state determined by the control device C2 include a stopped state, a small output power generation state, a maximum generated power generation state, and the like.

  When the current operating state of the waste heat power generation device 10 is determined, the control device C2 performs optimal control according to the determination result. For example, the operation of the incidental device D2 is controlled such that the relationship between the power consumption of the incidental device D2 provided in the incidental equipment 20 and the electric power generated by the waste heat power generation apparatus 10 becomes optimal. The above operation is repeated, and the accessory device D2 is controlled such that the accessory facility 20 is in an optimal state according to the operating state of the waste heat power generation device 10.

  As described above, in the present embodiment, the operation display device P1 (a device that transmits and receives the operation signal and the measurement control signal to and from the control device C1) provided in the waste heat power generation device 10, and the control device of the incidental facility 20 It is configured to be able to communicate with C2. Then, an operation signal from the control device C2 is indirectly transmitted to the control device C1 via the operation display device P1, and a measurement control signal obtained in advance from the control device C1 is transmitted according to a request signal from the control device C2. Is transmitted from the operation display device P1 to the control device C2.

  Therefore, the load of the control device C1 does not increase as in the case where the control device C1 of the waste heat power generation device 10 and the control device C2 of the incidental facility 20 are communicably connected, and the inherent waste heat generation device There is no problem in the control of 10. Further, since the function of communicating with the operation display device P1 is a function conventionally provided in the control device C1, there is no need to add a communication function to the program used in the control device C1. For this reason, verification of the program is unnecessary, and it does not require much effort and a long time for the verification.

Second Embodiment
FIG. 4 is a block diagram showing the main configuration of a waste heat power generation system according to a second embodiment of the present invention. As shown in FIG. 4, the waste heat power generation system 2 of the present embodiment differs from the waste heat generation system 1 shown in FIG. 1 in that a plurality of waste heat power generation devices 10 are provided. The operation display devices P1 provided in the plurality of waste heat power generation devices 10 are connected to the line concentrators H of the incidental facilities 20, respectively. Such a waste heat power generation system 2 is installed, for example, in a hot spring area or the like where more waste heat energy can be obtained than waste heat energy recoverable by one waste heat power generation device 10.

  The waste heat power generation device 10 has the same configuration as the configuration shown in FIGS. 2 and 3, and the operation display device P1 can communicate with the control device C2 provided in the incidental facility 20. The waste heat power generation device 10 transmits the operation signal from the control device C2 indirectly to the control device C1 through the operation display device P1, and controls the measurement control signal obtained from the control device C1 in advance. It transmits from the operation display device P1 to the control device C2 in response to a request signal from the device C2. Therefore, in the present embodiment, in each of the waste heat power generation devices 10, there is no hindrance to the control of the waste heat power generation devices 10 originally performed in the control device C1, and the program of the program used in the control device C1. There is no need for much effort and long time for verification.

  Although the waste heat power generation system according to the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and can be freely changed within the scope of the present invention. For example, in the above embodiment, the waste heat energy that has become the hot water X is recovered as electric energy, but the present invention is not limited to this. For example, waste gas may be used as a heat source. Further, the heat source is not limited to waste heat such as waste gas and waste hot water. Moreover, it is also possible to use radial turbine generators, such as a centrifugal expansion turbine generator and a mixed flow expansion turbine generator, as the expansion turbine generator 12 mentioned above.

1, 2 ... waste heat power generation system, 10 ... waste heat power generation device, C1 ... control device, C2 ... control device, H ... line concentrator, M ... memory, P1 ... operation display device, P2 ... operation display device

Claims (8)

A first control device for transmitting a second signal related to reception and measurement control of a first signal related to operation, transmission of the first signal to the first control device, and the second signal from the first control device A first operation display device for receiving a waste heat power generation device including:
And a second control device capable of communicating with the first operation display device and controlling incidental equipment incidental to the waste heat power generation device,
The first operation display device transmits an operation signal transmitted from the second controller to the first control device as a first signal in response to a request signal transmitted from the second control device A waste heat power generation system that transmits the second signal to the second control device.   The waste heat according to claim 1, wherein the first operation display device includes a storage unit for storing the second signal transmitted from the first control device and the operation signal transmitted from the second control device. Power generation system.   The waste heat power generation system according to claim 1 or 2, further comprising: a second operation display device which is made communicable with the second control device and outputs the operation signal and the request signal to the second control device. The second operation display device outputs an operation signal indicating start or end of operation of the waste heat power generation device and the incidental facility,
The second control device controls the operation start or the operation end of the incidental facility based on the operation signal output from the second operation display device, and transmits the operation signal to the first operation display device. And
The waste control system according to claim 3, wherein the first control device controls the start or the end of the operation of the waste heat power generator based on the operation signal transmitted as the first signal from the first operation display device. Thermal power generation system. The second operation display device outputs a request signal requesting transmission of the second signal,
The second control device transmits the request signal output from the second operation display device to the first operation display device, and the second control device transmits the request signal from the first operation display device in response to the request signal. The waste heat power generation system according to claim 3, wherein a second signal is transmitted to the second operation display device.   The second control device transmits a request signal for requesting transmission of the second signal to the first operation display device, and the second control device transmits the second signal transmitted from the first operation display device in response to the request signal. The waste heat power generation system according to claim 3, wherein the incidental facility is controlled based on a signal.   The waste heat power generation system according to any one of claims 3 to 6 provided with a line concentrator which connects said 1st operation display, said 2nd operation display, and said 2nd control device.   The waste heat power generation system according to any one of claims 1 to 7, comprising a plurality of the waste heat power generation devices.

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