CN203640777U - Steam turbine controller - Google Patents
Steam turbine controller Download PDFInfo
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- CN203640777U CN203640777U CN201320855635.0U CN201320855635U CN203640777U CN 203640777 U CN203640777 U CN 203640777U CN 201320855635 U CN201320855635 U CN 201320855635U CN 203640777 U CN203640777 U CN 203640777U
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Abstract
The utility model provides a steam turbine controller. Two redundancy controller cores are adopted in the steam turbine controller, the two redundancy controller cores are hot backups of each other, so that even if some controller core breaks down, safety operation of a steam turbine cannot be affected, and therefore the reliability of the steam turbine controller is improved. Input/output signals related to shutdown are set as redundancy input/output, therefore accidental shutdown caused by input/output failure of a single signal is avoided, and the reliability of the steam turbine controller is further improved. A plastic package power supply is adopted in a power module, due to improvement of the integration level, the power dissipation of the whole steam turbine controller is greatly reduced, so that the plastic package power supply with low power and small size can be adopted, and therefore the cost and the size of the whole steam turbine controller are reduced. The steam turbine controller further comprises a servo valve control module and can be adapted to small steam turbines and industrial turbines, the availability of the steam turbine controller is improved to the maximum limit, no additional equipment needs to be added, and therefore the cost performance of the steam turbine controller is improved.
Description
Technical field
The utility model relates to a kind of turbine controller, relates in particular to a kind of turbine controller for small steam turbine system.
Background technique
At present, steam turbine control system is quite ripe, as is widely used in the digital electro-hydraulic control system (Turbine Digital Electric Hydraulic Control System, vehicle economy H) in thermoelectricity plant.This main function of system comprises: turbine speed control, automatic paralleling control, load control, valve position (single valve/many valves) control, primary frequency modulation, machine/stove are coordinated control, fast cutback etc.
According to steam turbine accident data statistics; the lost efficacy shutdown number of times that causes of steam turbine automatic control system accounts for steam turbine and always shuts down 1/2nd of number of times; and steam turbine automatic control system loses efficacy, the shutdown hour number that causes accounted for steam turbine and always shut down 1/2nd of hour number, and this shows that automatic control system is the weak link of steam turbine reliability.
The DEH system of being used widely at present, comprises the parts such as basic controlling subtense angle, overspeed protection subtense angle, ATC subtense angle, operator station; Basic controlling subtense angle and overspeed protection subtense angle need two standard control racks (standard control cabinet dimensions is generally 700mm ╳ 700mm ╳ 2200mm); ATC subtense angle needs one to two standard control rack; add some operator stations, need to take larger space.
For small steam turbine system, on the basis of DEH system, simplify, hereinafter referred to as simple type DEH system, cast out the ATC subtense angle being equipped with on large unit, and the corresponding scale that reduces servo valve control part; But because system architecture is limit, the power supply of interior of equipment cabinet, switch box, controller etc. still need the space of at least one standard control cabinet.For the control of small steam turbine, meet although complete the requirement of controlling, still need to take larger space, cost performance is not fine.
Therefore those skilled in the art are devoted to provide the steam turbine that reliability is high, cost performance is high automatic control system.
Summary of the invention
The utility model provides a kind of turbine controller, can meet general small steam turbine control requirement and Security, adopts redundancy structure, improves the reliability of turbine controller; In cost and size, greatly reduce again simultaneously, thus the cost performance of raising turbine controller.
The utility model provides a kind of turbine controller, for small steam turbine, comprises basic control module, purpose overspeed protective module, power module and cabinet; it is characterized in that; turbine controller also comprises controller kernel, configuration module, FPGA module and the microcontroller of two redundancies, wherein
Basic control module is for controlling rotating speed, load and the quick closing valve of small steam turbine;
Purpose overspeed protective module is for the overspeed protection of small steam turbine;
Controller kernel is for the treatment of the control logic of small steam turbine;
Configuration module is for realizing the control logic of described basic control module;
FPGA module is for the input/output signal of turbine controller and being connected of microcontroller;
Microcontroller is for the processing of input/output signal and the algorithm process of purpose overspeed protective module of turbine controller.
Further, the controller kernel warm back-up each other of two redundancies, in the time that a controller kernel breaks down, another controller kernel is a control cycle inner connecting tube control logic.Even when certain controller kernel breaks down, also can not affect the safe operation of steam turbine, thereby improve the reliability of turbine controller.
Control cycle refers to that controller kernel completes a control logic and calculates the required time.
Further, in turbine controller, be set to redundant input to shutting down relevant input signal, avoid due to the input of the individual signals disorderly closedown causing that lost efficacy.
Further, in turbine controller, be set to redundancy output to shutting down relevant output signal, avoid due to the output of the individual signals disorderly closedown causing that lost efficacy.
Further, redundancy output is configured to two redundancies or triplex level redundancy, can be according to field condition, be configured to different redundant fashions.
Further, turbine controller also comprises control module of servo valve.Control module of servo valve comprises the control of two-way position closed loop, can adapt to the application of small steam turbine and industrial steam turbine, has increased to greatest extent the availability of turbine controller, and need not increase extra equipment, thereby improved the cost performance of turbine controller.
Further, turbine controller can be connected with process control machine or control centre by two-way 10/100Mbps ethernet communication link, can realize the local monitor of process control machine to turbine controller, or the remote monitoring of control centre to turbine controller; Realize history data collection, fault recording, operation is reported to the police, the additional functions such as I/O data fault warning.While adopting two-way 10/100Mbps ethernet communication link can avoid a road Ethernet to break down, on the impact of local monitor or remote monitoring.
Further, power module adopts plastic packaging power supply, because the level of integration of turbine controller improves, whole turbine controller power consumption has substantial degradation, therefore can adopt the plastic packaging power supply of power and small volume, thereby cost and the volume of turbine controller are reduced, the corresponding reliability that also improves turbine controller.
Further, plastic packaging power supply is LH40-10B05 or LH40-10B24.
Further, the length of cabinet is 368mm, is highly 252mm, and in size, significantly reduction, is only 1/10 of the system of simple type DEH shown in Fig. 2, thereby improves the cost performance of turbine controller; Because volume is little, be more convenient for installing at the scene simultaneously.
Compared with prior art, the turbine controller that the utility model provides has following beneficial effect:
(1) the controller kernel of the two redundancies of employing, the two is warm back-up each other, even when certain controller kernel breaks down, also can not affect the safe operation of steam turbine, thereby has improved the reliability of turbine controller;
(2) be set to redundant input/output to shutting down relevant input/output signal, avoid, due to the I/O of the individual signals disorderly closedown causing that lost efficacy, further having improved the reliability of turbine controller;
(3) power module adopts plastic packaging power supply, because the level of integration of turbine controller improves, whole turbine controller power consumption has substantial degradation, therefore can adopt the plastic packaging power supply of power and small volume, thereby cost and the volume of turbine controller are reduced, the corresponding reliability that also improves turbine controller;
(4) turbine controller that the utility model provides also comprises control module of servo valve, can adapt to the application of small steam turbine and industrial steam turbine, increase to greatest extent the availability of turbine controller, and need not increase extra equipment, thereby improved the cost performance of turbine controller.
Brief description of the drawings
Fig. 1 is the functional block diagram of an embodiment's of the present utility model turbine controller;
Fig. 2 is the comparison diagram dimensionally of the turbine controller shown in simple type DEH system and Fig. 1;
Fig. 3 is the detailed embodiment block diagram of the turbine controller shown in Fig. 1;
Fig. 4 is the schematic diagram that the turbine controller shown in Fig. 1 carries out port redundancy configuration.
Embodiment
For a more detailed description to specific embodiment of the invention below in conjunction with accompanying drawing.
For small steam turbine, need to provide the fundamental functions such as rotating speed control, overspeed protection, servovalve positioning control.
As shown in Figure 1, an embodiment's of the present utility model turbine controller, comprises controller kernel, configuration module, basic control module, microcontroller, FPGA module, purpose overspeed protective module, control module of servo valve and the power module of two redundancies;
The controller kernel of two redundancies is X86 host A and X86 host B, and microcontroller is MCU MB9AF114, and FPGA module is XC3S250E;
Basic control module is for controlling rotating speed, load and the quick closing valve of small steam turbine;
Purpose overspeed protective module is for the overspeed protection of small steam turbine;
Controller kernel is for the treatment of the control logic of small steam turbine;
Configuration module is for realizing the control logic of described basic control module;
FPGA module is for the input/output signal of turbine controller and being connected of microcontroller;
Microcontroller is for the processing of input/output signal and the algorithm process of purpose overspeed protective module of turbine controller.
Turbine controller in the present embodiment has been realized the detection of steam turbine baseband signal; Realize valve closed loop control; Realize the overspeed protection of steam turbine etc., met the control requirement of small steam turbine completely; Adopt the controller kernel of two redundancies, improved the reliability of turbine controller.
Turbine controller in the present embodiment has also comprised control module of servo valve, control module of servo valve comprises the control of two-way position closed loop, can adapt to the application of small steam turbine and industrial steam turbine, increase to greatest extent the availability of turbine controller, and need not increase extra equipment, thereby improve the cost performance of turbine controller.
The controller kernel of two redundancies, X86 host A and X86 host B warm back-up each other, in the time that a controller kernel breaks down, another controller kernel is a control cycle inner connecting tube control logic.Even when certain controller kernel breaks down, also can not affect the safe operation of steam turbine, thereby improve the reliability of turbine controller.
In turbine controller in the present embodiment, be set to redundant input to shutting down relevant input signal, the input mode that for example tach signal, power signal are triplex level redundancy, to avoid due to the input of the individual signals disorderly closedown causing that lost efficacy.Redundant input also can adopt two redundant fashions.
In turbine controller in the present embodiment, be set to redundancy output to shutting down relevant output signal, for example chaser signal, to avoid due to the output of the individual signals disorderly closedown causing that lost efficacy.
As shown in Figure 4, in the turbine controller in the present embodiment, the redundancy output of chaser signal can, according to field condition, be configured to two redundancies or triplex level redundancy by selector, is configured to different redundant fashions.In controller kernel, there is configuration file, can select the arbitrary position output on 8 relays of chaser signal.Utilize this function, may realize two redundancies or three of chaser signal output and select two redundancies, the fault causing to avoid relay to lose efficacy expands.
Take the measure of above-mentioned raising reliability, make the turbine controller in the present embodiment, in reliability, be not less than DEH system.
Configuration module is based on Windows core, in conjunction with advanced technologies such as figure demonstration, network, multi-medias, uses the graphic configuration language of international standard, has the property of great convenience, intuitive.Based on configuration module, can realize flexibly the function such as rotating speed control, load control of steam turbine; And the correct and reliability of the control algorithm that the control logic of the steam turbine key link of directly being come by DEH system transplantation ensures more.Configuration module has realized graphical treatment, and the predeterminable different rights of user, to support online change control algorithm or the different demand such as viewing algorithm only.
Purpose overspeed protective module comprises: exceed the throttle down protection of steam turbine rated speed 103%, and exceed the stoppage protection of steam turbine rated speed 110%, prevent that steam turbine from causing runaway accident because of equipment failure.The tach signal of triplex level redundancy input according to predefined protection value, sends throttle down or stopping signal in 20ms.
Control module of servo valve adopts the core of microcontroller MB9AF114 as servo valve control algorithm, by the digitizing of PID closed-loop adjustment, can realize easily the functions such as feedback error detection, failure removal, ratio/integral parameter online modification.
Turbine controller in the present embodiment, can be connected with process control machine or control centre by two-way 10/100Mbps ethernet communication link, can realize the local monitor of process control machine to turbine controller, or the remote monitoring of control centre to turbine controller; Realize history data collection, fault recording, operation is reported to the police, the additional functions such as I/O data fault warning.While adopting two-way 10/100Mbps ethernet communication link can avoid a road Ethernet to break down, on the impact of local monitor or remote monitoring.
The parameter of controller kernel X86 host A and X86 host B is that DM & P SoC CPU Vortex86DX-800MHz/ plate carries 128MB/256MB DDR2 internal memory, the peripheral hardwares such as built-in 10/100Mbps EtherNet LAN, USB, RS232, and can extend out ISA/PCI bus.Performance and the resource of controller kernel are not reduced, but volume has but been reduced to 70x70mm.
Power module adopts plastic packaging power supply, because the level of integration of turbine controller improves, whole turbine controller power consumption reduces greatly, therefore can adopt the plastic packaging power supply of power and small volume, thereby cost and the volume of turbine controller are reduced, improve the cost performance of turbine controller, the corresponding reliability that also improves turbine controller.
LH40-10B05 or LH40-10B24 for plastic packaging power acquisition.
Fig. 2 is simple type DEH system and an embodiment's of the present utility model comparison diagram dimensionally of turbine controller, the length of the cabinet of the turbine controller in the present embodiment is 368mm, be highly 252mm, significantly reduction in size, it is only 1/10 of simple type DEH system, simple type DEH system at least needs a 700mm ╳ 700mm ╳ 2200mm rack, also needs in addition configuration operation person station and corresponding operating table; The size of the turbine controller in the present embodiment is only 368mm ╳ 252mm ╳ 180mm, therefore improves the cost performance of turbine controller; Because volume is little, be more convenient for installing at the scene simultaneously.
As shown in Figure 3, (DM & P SoC CPU Vortex86DX-800MHz/ plate carries 128MB/256MB DDR2 internal memory to 32 X86 mainboards of the turbine controller employing ICOP company of the present embodiment, the peripheral hardwares such as built-in 10/100Mbps EtherNet LAN, USB, RS232) as controller kernel, adopt two redundancy backup configurations.Adopt the ARM Cortex-M3 of FUJITSU company Series of MCU MB9AF114 as I/O control chip.Adopt the XC3S250E of Xilinx company, realize interconnecting of isa bus between two controller kernels and microcontroller and EMIF bus.In I/O partial circuit, analog input uses 16 A/D conversion chip ADS8320 of TI company for reading actual valve position signal.With chips such as amplifiers, valve position signal is converted to the acceptable voltage of A/D chip by electronic switch array, instrument, realizes the sampling to signals such as outside valve position signal, vapor pressure, steam turbine temperature.The utility model uses the DAC7311 of TI company as servo valve control logarithmic output signal mould converter, and each road output all realizes isolation, interference free performance and the reliability of raising output greatly.
The turbine controller that the utility model provides adopts the controller kernel of two redundancies, and the two is warm back-up each other, even when certain controller kernel breaks down, also can not affect the safe operation of steam turbine, thereby has improved the reliability of turbine controller; Be set to redundant input/output to shutting down relevant input/output signal, avoid, due to the I/O of the individual signals disorderly closedown causing that lost efficacy, further having improved the reliability of turbine controller; Power module adopts plastic packaging power supply, because the level of integration of turbine controller improves, whole turbine controller power consumption has substantial degradation, and therefore can adopt the plastic packaging power supply of power and small volume, thereby cost and the volume of turbine controller are reduced, the corresponding reliability that also improves turbine controller; The turbine controller that the utility model provides also comprises control module of servo valve, can adapt to the application of small steam turbine and industrial steam turbine, increase to greatest extent the availability of turbine controller, and need not increase extra equipment, thereby improved the cost performance of turbine controller.
More than describe preferred embodiment of the present utility model in detail.The ordinary skill that should be appreciated that related domain just can be made many modifications and variations according to design of the present utility model without creative work.Therefore, all technician in the art comply with design of the present utility model on the basis of existing technology by the available technological scheme of logical analysis, reasoning, or a limited experiment, all should be in by the determined protection domain of claims.
Claims (10)
1. a turbine controller, for small steam turbine, comprises basic control module, purpose overspeed protective module, power module and cabinet; it is characterized in that; described turbine controller also comprises controller kernel, configuration module, FPGA module and the microcontroller of two redundancies, wherein
Described basic control module is for controlling rotating speed, load and the quick closing valve of described small steam turbine;
Described purpose overspeed protective module is for the overspeed protection of described small steam turbine;
Described controller kernel is for the treatment of the control logic of described small steam turbine;
Described configuration module is for realizing the control logic of described basic control module;
Described FPGA module is for the input/output signal of described turbine controller and being connected of described microcontroller;
Described microcontroller is for the processing of input/output signal and the algorithm process of described purpose overspeed protective module of described turbine controller.
2. turbine controller as claimed in claim 1, is characterized in that, the described controller kernel warm back-up each other of two redundancies, and in the time that a described controller kernel breaks down, described in another, controller kernel is a control cycle inner connecting tube control logic.
3. turbine controller as claimed in claim 1, is characterized in that, input signal relevant to shutdown in described turbine controller is set to redundant input.
4. turbine controller as claimed in claim 1, is characterized in that, in described turbine controller, the output signal relevant to shutdown is set to redundancy output.
5. turbine controller as claimed in claim 4, is characterized in that, described redundancy output is configured to two redundancies or triplex level redundancy.
6. turbine controller as claimed in claim 1, is characterized in that, described turbine controller also comprises control module of servo valve.
7. turbine controller as claimed in claim 1, is characterized in that, described turbine controller can be connected with process control machine or control centre by two-way 10/100Mbps ethernet communication link.
8. turbine controller as claimed in claim 1, is characterized in that, described power module adopts plastic packaging power supply.
9. turbine controller as claimed in claim 8, is characterized in that, described plastic packaging power supply is LH40-10B05 or LH40-10B24.
10. turbine controller as claimed in claim 1, is characterized in that, the length of described cabinet is 368mm, is highly 252mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320855635.0U CN203640777U (en) | 2013-12-23 | 2013-12-23 | Steam turbine controller |
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| CN201320855635.0U CN203640777U (en) | 2013-12-23 | 2013-12-23 | Steam turbine controller |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018895A (en) * | 2014-06-19 | 2014-09-03 | 南京科远自动化集团股份有限公司 | ETS protective unit and triply-redundant steam turbine emergency protection system |
| CN107654993A (en) * | 2017-09-26 | 2018-02-02 | 莫程 | Coal electricity generation boiler water inflow control system |
| CN109306875A (en) * | 2018-09-25 | 2019-02-05 | 中国船舶重工集团公司第七0三研究所 | A kind of synchronous hot backup redundancy switching device of steam turbine DEH dual controller and method |
| CN114252645A (en) * | 2020-09-23 | 2022-03-29 | 和舰芯片制造(苏州)股份有限公司 | Rotation speed detection system and method thereof |
-
2013
- 2013-12-23 CN CN201320855635.0U patent/CN203640777U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018895A (en) * | 2014-06-19 | 2014-09-03 | 南京科远自动化集团股份有限公司 | ETS protective unit and triply-redundant steam turbine emergency protection system |
| CN107654993A (en) * | 2017-09-26 | 2018-02-02 | 莫程 | Coal electricity generation boiler water inflow control system |
| CN109306875A (en) * | 2018-09-25 | 2019-02-05 | 中国船舶重工集团公司第七0三研究所 | A kind of synchronous hot backup redundancy switching device of steam turbine DEH dual controller and method |
| CN114252645A (en) * | 2020-09-23 | 2022-03-29 | 和舰芯片制造(苏州)股份有限公司 | Rotation speed detection system and method thereof |
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Granted publication date: 20140611 |