CN112540547B - Steam turbine valve simulation control system - Google Patents
Steam turbine valve simulation control system Download PDFInfo
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- CN112540547B CN112540547B CN202011269766.1A CN202011269766A CN112540547B CN 112540547 B CN112540547 B CN 112540547B CN 202011269766 A CN202011269766 A CN 202011269766A CN 112540547 B CN112540547 B CN 112540547B
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- valve opening
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B17/00—Systems involving the use of models or simulators of said systems
- G05B17/02—Systems involving the use of models or simulators of said systems electric
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Turbines (AREA)
Abstract
The application relates to a steam turbine valve simulation control system, and a control device is used for sending a steam turbine valve opening control signal. The simulation device is used for feeding back the first valve opening information to the control device according to the valve opening control signal and sending the second valve opening information. The display device is used for receiving the second valve opening information and displaying the opening state of the steam turbine valve according to the second valve opening information. The control device sends a steam turbine valve opening control signal to the simulation device, so that the simulation device simulates the opening of the steam turbine valve according to the steam turbine valve opening control signal, and feeds back first valve opening information to the control device, so that the control device can accurately adjust the opening of the steam turbine valve. The simulation device can accurately simulate the opening condition of the steam turbine valve. Therefore, under the condition that a steam turbine valve is not required to be started, each component in the control device can be tested and verified, and the working efficiency is improved.
Description
Technical Field
The application relates to the field of steam turbines, in particular to a steam turbine valve simulation control system.
Background
The main steam valve control system of the steam turbine is a system for controlling the rotating speed and the power of the generator set by controlling the opening degree of the steam inlet valve of the steam turbine. The main steam valve control system of the steam turbine is a closed-loop control system, and an executing mechanism, such as a main steam valve of the steam turbine, needs to be connected and switched, so that instrument control equipment of the main steam valve control system of the steam turbine can enter a normal running state. The main valve positioner of the steam turbine adopts an electrohydraulic servo valve, and the operation of the main valve positioner needs a complex power oil system for supporting. During the overhaul of the power plant unit, most of the time of an executing mechanism is in an unavailable state due to the maintenance of a mechanical equipment body, so that the instrument control equipment is in a fault state and cannot be tested and verified, and the working efficiency is influenced.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a turbine valve simulation control system.
A steam turbine valve simulation control system comprising:
the control device is used for sending a valve opening control signal of the steam turbine;
the simulation device is used for feeding back the first valve opening information to the control device according to the valve opening control signal and sending the second valve opening information; and
and the display device is used for receiving the second valve opening information and displaying the opening state of the steam turbine valve according to the second valve opening information.
In one embodiment, the control device includes a plurality of valve control modules, the simulation device includes a plurality of valve opening simulation devices, the valve control modules and the valve opening simulation devices are in one-to-one correspondence, each valve control module is configured to send one valve opening control signal to one valve opening simulation device, and each valve opening simulation device feeds back the first valve opening information to the corresponding invention control module and sends second valve opening information to the display device.
In one embodiment, the simulation apparatus further comprises:
the sampling circuit is connected with the valve control module and is used for receiving the valve opening control signal of the steam turbine; and
and the processing circuit is connected with the sampling circuit and is used for simulating the change of the valve opening of the steam turbine according to the control signal of the valve opening of the steam turbine, feeding back the first valve opening information to the control device and sending the second valve opening information to the display device.
In one embodiment, the simulation apparatus further comprises:
analog-to-digital conversion circuitry coupled between the sampling circuitry and the processing circuitry, and
the digital-to-analog conversion circuit is connected between the processing circuit and the display device, and is also connected between the processing circuit and the valve control module.
In one embodiment, the display device displays the opening state of the turbine valve through a bar graph.
In one embodiment, the first valve opening information comprises a linear variable differential voltage signal.
In one embodiment, the control device comprises an upper computer and a lower computer, wherein the upper computer is used for inputting control information, and the lower computer is used for sending a steam turbine valve opening control signal.
In one embodiment, the simulation device further comprises a housing, and the cooling device is arranged in the housing.
In one embodiment, the housing is provided with an output port through which the simulation device feeds back first valve opening information to the control device.
In one embodiment, the housing is provided with a communication interface, and the simulation device sends second valve opening information through the communication interface.
The embodiment of the application provides a steam turbine valve simulation control system, wherein the control device is used for sending a steam turbine valve opening control signal. The simulation device is used for feeding back the first valve opening information to the control device according to the valve opening control signal and sending the second valve opening information. The display device is used for receiving the second valve opening information and displaying the opening state of the steam turbine valve according to the second valve opening information. And sending the steam turbine valve opening control signal to the simulation device through the control device, so that the simulation device simulates the opening of the steam turbine valve according to the steam turbine valve opening control signal, and feeding back the first valve opening information to the control device, so that the control device can accurately adjust the steam turbine valve opening. The simulation device can accurately simulate the opening condition of the turbine valve, so that the turbine valve simulation control system can simulate the execution condition of each component in the control device in operation. Therefore, under the condition that the steam turbine valve is not required to be started, the test and verification can be carried out on each component in the control device, so that the working flow is simplified, and the working efficiency is improved.
Drawings
FIG. 1 is a block diagram of a steam turbine valve simulation control system provided in an embodiment of the present application;
FIG. 2 is a block diagram of a steam turbine valve simulation control system according to another embodiment of the present application;
FIG. 3 is a block diagram of a steam turbine valve simulation control system according to another embodiment of the present application.
Reference numerals illustrate:
the system comprises a steam turbine valve simulation control system 10, a control device 100, a valve control module 110, an upper computer 120, a lower computer 130, a cooling device 140, a simulation device 200, a valve opening simulation device 210, a sampling circuit 220, a processing circuit 230, an analog-to-digital conversion circuit 240, a digital-to-analog conversion circuit 250, a power supply module 260 and a display device 300.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the following embodiments are used to describe the steam turbine valve simulation control system of the present application in further detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
Referring to FIG. 1, an embodiment of the present application provides a turbine valve simulation control system 10. The turbine valve simulation control system 10 includes a control device 100, a simulation device 200, and a display device 300. The control device 100 is configured to send a turbine valve opening control signal. The simulation device 200 is configured to feed back first valve opening information to the control device 100 according to the valve opening control signal, and send second valve opening information. The display device 300 is configured to receive the second valve opening information. The display device 300 is configured to display an opening state of the turbine valve according to the second valve opening information.
The control device 100 may be configured to input opening information of the turbine valve, and control to send the opening control signal of the turbine valve to the simulation device 200 according to the opening information. The simulation device 200 may be configured to simulate an opening change of the turbine valve under the control of the turbine valve opening control signal in a real working scenario, and may feed back first valve opening information to the control device 100 in real time. The control device 100 may transmit real-time adjustment information according to the first valve opening information to precisely control the opening of the turbine valve simulated in the simulation device 200. It will be appreciated that the simulation device 200 and the control device 100 form a feedback loop. The feedback form is consistent with the feedback form of the steam turbine valve, so that the real scene of the steam turbine valve controlled can be completely restored. The steam turbine valve simulation control system 10 can simulate the execution condition of each component in the control device 100 during operation, so that each component in the control device 100 can be tested and verified without starting the steam turbine valve, thereby simplifying the working flow and improving the working efficiency. The valve opening control signal may be a high frequency current signal.
It will be appreciated that the control device 100 may have a man-machine interaction function to achieve the purpose of manually controlling the turbine valve. The simulation device 200 may have a circuit board integrated therein. A processor may be disposed in the circuit board. And running a model established for the turbine valve through the processor, and then outputting the first valve opening information. The display device 300 may be an OLED display, a liquid crystal display, or the like. The simulated opening condition and the operation state of the turbine valve can be displayed by the display device 300. The display device 300 may also display the working conditions of each component in the control device 100 to monitor, so that the working conditions of the control device 100 can be tested and verified by the staff.
The control device 100 is configured to send a control signal for controlling the opening of the turbine valve according to the steam turbine valve simulation control system 10 provided in the embodiment of the present application. The simulation device 200 is configured to feed back first valve opening information to the control device 100 according to the valve opening control signal, and send second valve opening information. The display device 300 is configured to receive the second valve opening information, and display an opening state of the turbine valve according to the second valve opening information. The control device 100 sends the steam turbine valve opening control signal to the simulation device 200, so that the simulation device 200 simulates the opening of the steam turbine valve according to the steam turbine valve opening control signal, and feeds back the first valve opening information to the control device 100, so that the control device 100 can accurately adjust the opening of the steam turbine valve. The simulation device 200 can accurately simulate the opening condition of the turbine valve, so that the turbine valve simulation control system 10 can simulate the execution condition of each component in the control device 100 in operation. Therefore, the test and verification of each component in the control device 100 can be performed without starting the turbine valve, thereby simplifying the working flow and improving the working efficiency.
Referring to fig. 2, in one embodiment, the control device 100 includes a plurality of valve control modules 110. The simulation device 200 includes a plurality of valve opening simulation devices 210. The valve control module 110 corresponds to the valve opening simulator 210 one by one. Each of the valve control modules 110 is configured to send one of the valve opening control signals to one of the valve opening simulators 210. Each valve opening simulator 210 feeds back the first valve opening information to the corresponding invention control module, and sends second valve opening information to the display device 300.
The number of the valve control module 110 and the valve opening simulation means 210 may be controlled according to the number of the turbine valves to be simulated. One of the valve control modules 110 may control one of the valve opening simulators 210. Thus, different control parameters can be input to different valve control modules 110, so that different turbine valves can be controlled in a simulated manner. It is understood that the valve opening simulator 210 may be a virtual device modeled based on the turbine valve being simulated. The valve opening simulation device 210 and the valve control module 110, which are in one-to-one correspondence, may be connected to form closed-loop feedback, so that the valve control module 110 precisely controls the simulated turbine valve. Each of the valve opening simulation means 210 transmits the second valve opening information to the display means 300. The second valve opening information may include an opening state and an operating state of the steam turbine valve to be simulated. The display device 300 can display the opening state and the operating state of the steam turbine valve to be simulated.
The I/O signal communication measurement or output accuracy between the valve opening simulator 210 and the valve control module 110 is no more than 5% at maximum, and in one embodiment, the accuracy may be 1%. The valve opening simulator 210 may include a single-chip microcomputer. The program in the singlechip outputs the first valve opening information to the valve control module 110 in real time according to the high-frequency current output signal of the valve opening simulation device 210, the data curve transformation diagram and the dynamic characteristic. When the high-frequency current output signal is lost, the valve opening simulation device 210 can simulate the power-off safety closing condition, and the valve opening feedback signal can return to 0% in about 50 ms.
The single-chip microcomputer in the valve opening simulation device 210 may also have a serial port communication function. The valve opening simulator 210 may upload the first valve opening information and the health status information of the valve opening simulator 210 to the control device and the display device through the serial communication function. So that a worker can grasp the operating state of the valve opening simulator 210 in real time.
In one embodiment, the control device 100 may further include a server. The control device 100 may traverse each of the valve opening simulation devices 210 through the server. If communication is faulty when a signal is taken, the health status is set as faulty. The display device 300 may be provided with a client. The client program communicates with the server program and displays the health status on the status monitor interface of the display device 300. The normal state of the valve opening simulator 210 is indicated by green. The failure state of the valve opening simulator 210 is indicated by red. The display device 300 provides a return signal real time monitoring interface function. And converting out a corresponding 4-20mA current value according to the current valve opening degree by the server and outputting the current value. The signal of which valve is output is determined by the "which valve opening is output" on the server interface.
Referring to fig. 3, in one embodiment, the simulation apparatus 200 further includes a sampling circuit 220 and a processing circuit 230. The sampling circuit 220 is coupled to the valve control module 110. The sampling circuit 220 is configured to receive the turbine valve opening control signal. The processing circuit 230 is connected to the sampling circuit 220. The processing circuit 230 is configured to simulate a change in the valve opening of the steam turbine according to the control signal of the valve opening of the steam turbine, and to feed back the first valve opening information to the control device 100, and to send the second valve opening information to the display device 300. It is understood that the sampling circuit 220 may be a voltage sampling circuit 220 or a current sampling circuit 220. The processing circuit 230 may include an arithmetic unit such as a single chip microcomputer, a Read Only Memory (ROM), and the like. The model of the turbine valve may be run in the processing circuit 230. The processing circuit 230 feeds back the simulated opening state of the turbine valve to the control device 100 so that the control device 100 feeds back in real time. The processing circuit 230 may also send second valve opening information to the display device 300 to cause the display device 300 to display the simulated opening and operating state of the turbine valve. In one embodiment, the processing circuitry 230 may communicate with the display device 300 via RS 485.
In one embodiment, the emulation device 200 further comprises an analog-to-digital conversion circuit 240 and a digital-to-analog conversion circuit 250. The analog-to-digital conversion circuit 240 is connected between the sampling circuit 220 and the processing circuit 230. The digital to analog conversion circuit 250. Is connected between the processing circuit 230 and the display device 300. The digital to analog conversion circuit 250 is also coupled between the processing circuit 230 and the valve control module 110. The sampling circuit 220, the valve control module 110 may be used to process analog signals, and the processing circuit 230 may be used to process digital signals.
In one embodiment, electro-hydraulic servo valve simulator visualization software may be disposed in the display device 300, and the display device 300 displays the opening state of the turbine valve through a bar chart. It is understood that the filling ratio of the histogram may be consistent with the opening of the turbine valve. The histogram may be filled when the simulated opening of the turbine valve is 100%. The opening state of the turbine valve can also be displayed by a pie chart, a graph chart and the like. The processing circuit 230 may communicate with the electro-hydraulic servo valve simulator via RS485 via a 4-20mA current signal. The valve module may receive a high frequency current control signal and feed back a 5000HZ ac voltage signal (valve position signal). The current and voltage correspondence of the valve module may be set by modifying a ROM data table. The electrohydraulic servo valve simulator software can be installed on a personal computer based on a Microsoft Windows XP operating system, is communicated with the valve opening simulation device 210 through an RS485/232 serial port, and can display 14 main steam valve current driving signals and valve opening signals of the steam turbine in real time through a software man-machine interface and display the working state of the valve opening simulation device 210, so that visual management is convenient for maintenance personnel.
In one embodiment, the first valve opening information comprises a linear variable differential voltage signal. The Linear Variable Differential (LVDT) voltage signal has the advantage of high accuracy. The digital-to-analog conversion module can transmit the analog signal to the analog-to-digital conversion circuit 240 through the 4-20mA valve position signal feedback unit, and the digital signal is input to the display device 300 for processing and displaying.
In one embodiment, the control device 100 includes an upper computer 120 and a lower computer 130. The upper computer 120 is used for inputting control information. The lower computer 130 is used for sending a control signal of the opening degree of the valve of the steam turbine. That is, the upper computer 120 may be an input device such as a computer. A control command may be input through the upper computer 120. The upper computer 120 sends the control command to the lower computer 130. The lower computer 130 sends the control signal of the opening degree of the turbine valve according to the control instruction. The lower computer 130 may directly control the device to obtain the device status. The upper computer 120 and the lower computer 130 may communicate using different communication protocols. The communication protocol may include serial communication of RS232 or RS485 serial communication.
In one embodiment, the emulation device 200 further comprises a housing. A cooling device 140 is disposed within the housing. The described may constitute the main body of the simulation device 200. The housing may be of a cubic configuration. The housing may be provided with an operating face. The operation surface can be provided with various interfaces and operation buttons. The cooling device 140 may be configured to cool the valve opening simulator 210. It is understood that the valve opening simulator 210 may be a circuit board. The circuit board can emit more heat when working. The cooling device 140 can radiate heat to the circuit board. In one embodiment, the housing may be 65CM by 40 x 21CM in size, and the housing may be provided with a handle for portability. The operating surface of the shell can be provided with a cover body. When the simulation apparatus 200 is used, the cover may be opened. When the simulation device 200 is not to be used, the cover may be closed to protect the ports and operation buttons on the operation surface. It will be appreciated that the housing may be made of a non-conductive insulating material.
In one embodiment, the housing is provided with an output port. The simulation device 200 feeds back first valve opening information to the control device 100 through the output port. The housing may also be provided with a voltage plug. The power plug may be a 220VAC plug. The 220VAC plug may power the cooling device 140 and the power module 260 in the housing. The power module may be used to plug in the 220VAC plug. The power supply module 260 is further connected to the sampling circuit 220, the analog-to-digital conversion circuit 240, and the processing circuit 230, respectively. The power supply module 260 is configured to supply power to the sampling circuit 220, the analog-to-digital conversion circuit 240, and the processing circuit 230, respectively.
In one embodiment, the housing is provided with a communication interface. The simulation device 200 sends second valve opening information through the communication interface. The communication interface can be externally connected with a computer. And outputs the digital signal of the opening degree of the turbine valve so as to be displayed on the display device 300.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the patent. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (10)
1. A steam turbine valve simulation control system, comprising:
the control device is used for sending a valve opening control signal of the steam turbine;
the simulation device is used for feeding back the first valve opening information to the control device according to the valve opening control signal and sending the second valve opening information; and
the display device is used for receiving the second valve opening information and displaying the opening state of the steam turbine valve according to the second valve opening information;
the control device is also used for sending real-time adjustment information according to the first valve opening information so as to control the opening of the steam turbine valve simulated in the simulation device;
the display device is also used for displaying the working condition of each component in the control device.
2. The steam turbine valve simulation control system of claim 1, wherein the control device comprises a plurality of valve control modules, the simulation device comprises a plurality of valve opening simulation devices, the valve control modules and the valve opening simulation devices are in one-to-one correspondence, each valve control module is used for sending one valve opening control signal to one valve opening simulation device, and each valve opening simulation device feeds back the first valve opening information to the corresponding valve control module and sends second valve opening information to the display device.
3. The turbine valve simulation control system of claim 2, wherein the simulation apparatus further comprises:
the sampling circuit is connected with the valve control module and is used for receiving the valve opening control signal of the steam turbine; and
and the processing circuit is connected with the sampling circuit and is used for simulating the change of the valve opening of the steam turbine according to the control signal of the valve opening of the steam turbine, feeding back the first valve opening information to the control device and sending the second valve opening information to the display device.
4. The turbine valve simulation control system of claim 3, wherein the simulation apparatus further comprises:
analog-to-digital conversion circuitry coupled between the sampling circuitry and the processing circuitry, and
the digital-to-analog conversion circuit is connected between the processing circuit and the display device, and is also connected between the processing circuit and the valve control module.
5. The steam turbine valve simulation control system according to claim 1, wherein the display means displays the opening state of the steam turbine valve by a histogram.
6. The turbine valve simulation control system of claim 1, wherein the first valve opening information comprises a linear variable differential voltage signal.
7. The turbine valve simulation control system of claim 1, wherein the control device comprises an upper computer and a lower computer, the upper computer is used for inputting control information, and the lower computer is used for sending a turbine valve opening control signal.
8. The turbine valve simulation control system of claim 1, wherein the simulation device further comprises a housing, and wherein the cooling device is disposed within the housing.
9. The steam turbine valve simulation control system of claim 8, wherein the housing is provided with an output port through which the simulation device feeds back first valve opening information to the control device.
10. The turbine valve simulation control system of claim 9, wherein the housing is provided with a communication interface, and the simulation device transmits the second valve opening information through the communication interface.
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| CN202011269766.1A CN112540547B (en) | 2020-11-13 | 2020-11-13 | Steam turbine valve simulation control system |
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| CN202011269766.1A CN112540547B (en) | 2020-11-13 | 2020-11-13 | Steam turbine valve simulation control system |
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| CN102436182A (en) * | 2011-08-31 | 2012-05-02 | 哈尔滨工程大学 | Semi-physical simulation device and simulation method of ship gas turbine generator set |
| CN103955139A (en) * | 2014-04-21 | 2014-07-30 | 哈尔滨汽轮机厂有限责任公司 | Method for achieving simulation of heavy duty gas turbine by adopting distributed control system |
| CN109870927A (en) * | 2019-03-22 | 2019-06-11 | 哈尔滨汽轮机厂有限责任公司 | Million capacitance grade steam turbine island control logic verification platforms |
| CN110119591B (en) * | 2019-05-22 | 2023-05-16 | 哈尔滨汽轮机厂有限责任公司 | Oil motor simulation device |
| CN110262285B (en) * | 2019-06-24 | 2022-06-21 | 哈尔滨汽轮机厂有限责任公司 | Universal nuclear turbine control system simulator |
| CN211427718U (en) * | 2020-04-15 | 2020-09-04 | 福建宁德核电有限公司 | Training simulation system for nuclear power station steam turbine control system |
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