CN102720547B - A kind of redundance type turbine emergency trip system - Google Patents
A kind of redundance type turbine emergency trip system Download PDFInfo
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- CN102720547B CN102720547B CN201210213481.5A CN201210213481A CN102720547B CN 102720547 B CN102720547 B CN 102720547B CN 201210213481 A CN201210213481 A CN 201210213481A CN 102720547 B CN102720547 B CN 102720547B
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Abstract
A kind of redundance type turbine emergency trip system, relates to steam turbine technology field, and what solve is improve reliability, and the technical problem of expansion monitor signal type.Described steam turbine is provided with at least one tripping electromagnetic valve for controlling its admission valve opening and closing, for quick closedown turbine admission valve under emergency situation; This system comprises redundant manipulator, and multiple definite value comparator, multiple signal distributor, multiple voting machine; The output terminal of each voting machine receives each tripping electromagnetic valve respectively; Each definite value comparator and each signal distributor are respectively divided into many groups by the mode of multiple a group; The output terminal of each definite value comparator receives the input end of each voting machine respectively, and the output terminal of each signal distributor receives the input end of each voting machine respectively; Described redundant manipulator connects each definite value comparator, each signal distributor and each voting machine by Ethernet.System provided by the invention, is applicable to turbine emergency blocking and controls.
Description
Technical field
The present invention relates to steam turbine technology, particularly relate to a kind of technology of redundance type turbine emergency trip system.
Background technique
As shown in Figure 2, existing turbine emergency trip system (ETS) is mainly with the decentralized treatment module of DPU(based on microprocessor) be core, the on-off model of Turbine Safety reliable operation is affected from field apparatus or other control system collection, and Logic judgment is carried out to these signals, once these signal values surmount operation limits value, turbine emergency trip system (ETS) just exports trip signal to on-the-spot tripping electromagnetic valve, completed the function of quick closedown steam turbine air intake valve by the tripping electromagnetic valve at scene, thus ensure the safe operation of steam turbine.But, existing turbine emergency trip system (ETS) can only monitor the on-off model affecting Turbine Safety reliable operation, the analog signals affecting Turbine Safety reliable operation can not be monitored, the type of its monitor signal needs to be expanded, and the reliability of existing turbine emergency trip system (ETS) is also poor, once some component failure in system also easily causes malfunction and the tripping of steam turbine trip solenoid valve, there is very big hidden danger in the safe and reliable operation for steam turbine.
Summary of the invention
For the defect existed in above-mentioned prior art, it is high that technical problem to be solved by this invention is to provide a kind of reliability, can process the redundance type turbine emergency trip system of multiple monitor signal type.
In order to solve the problems of the technologies described above, a kind of redundance type turbine emergency trip system provided by the present invention, described steam turbine is provided with at least one tripping electromagnetic valve for controlling its admission valve opening and closing, it is characterized in that: comprise redundant manipulator, and multiple definite value comparator, multiple signal distributor, multiple voting machine;
The quantity of described voting machine is consistent with the quantity of tripping electromagnetic valve, the corresponding tripping electromagnetic valve of each voting machine, and the output terminal of each voting machine respectively receives corresponding tripping electromagnetic valve;
The output terminal of each definite value comparator receives the input end of each voting machine respectively, and the output terminal of each signal distributor receives the input end of each voting machine respectively;
Described redundant manipulator connects each definite value comparator, each signal distributor and each voting machine by Ethernet.
Redundance type turbine emergency trip system provided by the invention, definite value comparator is utilized to access the analog signals affecting Turbine Safety reliable operation, signal distributor is utilized to access the on-off model affecting Turbine Safety reliable operation, the signal type that can monitor is more, and each definite value comparator, each signal distributor and the equal independent operating of each voting machine, redundant manipulator is not needed to carry out computing, by the access of same road monitor signal with after the definite value comparator organized or signal distributor, the multiple redundancy of each road monitor signal can be realized, therefore when there being a module to produce fault in system, the operation of other module can not be affected, system reliability is very high, effectively can avoid malfunction and the tripping of steam turbine trip solenoid valve, ensure the safe and reliable operation of steam turbine.
Accompanying drawing explanation
Fig. 1 is the structural representation of the redundance type turbine emergency trip system of the embodiment of the present invention;
Fig. 2 is the structural representation of existing turbine emergency trip system.
Embodiment
Illustrate below in conjunction with accompanying drawing and be described in further detail embodiments of the invention, but the present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar change thereof, all should list protection scope of the present invention in.
As shown in Figure 1, a kind of redundance type turbine emergency trip system that the embodiment of the present invention provides, described steam turbine is provided with at least one tripping electromagnetic valve for controlling its admission valve opening and closing, and this solenoid valve can be used for quick closedown turbine admission valve under emergency situation;
It is characterized in that: comprise redundant manipulator (not shown), and multiple definite value comparator (only illustrating 1 in figure), multiple signal distributor (only illustrating 1 in figure), multiple voting machine;
The quantity of described voting machine is consistent with the quantity of tripping electromagnetic valve, the corresponding tripping electromagnetic valve of each voting machine, and the output terminal of each voting machine respectively receives corresponding tripping electromagnetic valve;
The output terminal of each definite value comparator receives the input end of each voting machine respectively, and the output terminal of each signal distributor receives the input end of each voting machine respectively;
Described redundant manipulator connects each definite value comparator, each signal distributor and each voting machine by Ethernet.
In the embodiment of the present invention, described signal distributor is FPGA(programmable logic controller (PLC)), described definite value comparator, voting machine are FPGA(programmable logic controller (PLC)) or CPLD(complex programmable logic controller), described redundant manipulator is the decentralized treatment module of DPU(based on microprocessor).
The embodiment of the present invention is applicable to turbine emergency tripping operation and controls, during application, each road analog signals that steam turbine is monitored for tripping operation is accessed each definite value comparator respectively, each way switch amount signal that steam turbine is monitored for tripping operation is accessed each signal distributor respectively, and the threshold value of each definite value comparator is set by redundant manipulator, respectively configuration is carried out to the Trip Logic of each voting machine by redundant manipulator; Be can only to the one-way communication mode of the unidirectional transmission information of redundant manipulator by each definite value comparator arrangement after the threshold value of each definite value comparator has set, the Trip Logic configuration of each signal distributor and each voting machine completes that be also configured to can only to the one-way communication mode of the unidirectional transmission information of redundant manipulator;
During system cloud gray model, each definite value comparator, each signal distributor, each voting machine all run independent of redundant manipulator;
Each definite value comparator judges the analog signals of each road of input for tripping operation monitoring, when each definite value comparator judges that the analog signals inputted exceeds the threshold value of setting, namely export the on-off model of state of necessity to each voting machine, otherwise then export the on-off model of normal state to each voting machine;
The on-off model for tripping operation monitoring of input is distributed to each voting machine by each signal distributor;
Each voting machine all receives the on-off model of all definite value comparators and the output of all signal distributors, and Trip Logic judgement is carried out to each on-off model received, if Trip Logic judged result is for trip immediately, then export trip command to corresponding tripping electromagnetic valve, otherwise then do not export trip command;
Such as, the analog amount tach signal for tripping operation monitoring steam turbine application system exported accesses three definite value comparators respectively, and the threshold value of these 3 definite value comparators is all set to 3300 turns, when turbine speed is more than 3300 turns, these 3 definite value comparators respectively export on-off model that steam turbine exceeded the speed limit to each voting machine, namely each voting machine all receives the on-off model that steam turbine that 3 definite value comparators send has exceeded the speed limit, each voting machine exports trip command immediately respectively to corresponding tripping electromagnetic valve, each tripping electromagnetic valve closes the admission valve of steam turbine immediately after receiving trip command, to ensure the safe operation of steam turbine, any two tripping electromagnetic valves receive the admission valve that trip command can close steam turbine, so in this process, any one voting machine, definite value comparator or signal distributor lost efficacy the normal operation of not influential system.
In the embodiment of the present invention, described tripping electromagnetic valve has 3 (i.e. 3 heavy redundant configuration), and during practical application, tripping electromagnetic valve also may be more than 3, and native system can according to the quantity of solenoid valve, the quantity of flexible configuration definite value comparator, signal distributor and voting machine.
In the embodiment of the present invention, each voting machine Trip Logic configuration depend on that the design of signal, typical Trip Logic voting formula have and 1,3 are got to signal 2 get 2,4 and get 2 etc.
Claims (1)
1. a redundance type turbine emergency trip system, described steam turbine is provided with at least one tripping electromagnetic valve for controlling its admission valve opening and closing;
It is characterized in that: comprise redundant manipulator, and multiple definite value comparator, multiple signal distributor, multiple voting machine;
The quantity of described voting machine is consistent with the quantity of tripping electromagnetic valve, the corresponding tripping electromagnetic valve of each voting machine, and the output terminal of each voting machine respectively receives corresponding tripping electromagnetic valve;
The output terminal of each definite value comparator receives the input end of each voting machine respectively, and the output terminal of each signal distributor receives the input end of each voting machine respectively;
Described redundant manipulator connects each definite value comparator, each signal distributor and each voting machine by Ethernet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210213481.5A CN102720547B (en) | 2012-06-27 | 2012-06-27 | A kind of redundance type turbine emergency trip system |
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| CN201210213481.5A CN102720547B (en) | 2012-06-27 | 2012-06-27 | A kind of redundance type turbine emergency trip system |
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| CN102720547A CN102720547A (en) | 2012-10-10 |
| CN102720547B true CN102720547B (en) | 2016-04-06 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628933B (en) * | 2013-12-02 | 2015-12-02 | 成都成发科能动力工程有限公司 | Realize the controlling method of Miniature steamer unit emergency protective system function |
| CN107060903A (en) * | 2016-12-27 | 2017-08-18 | 国核自仪系统工程有限公司 | Turbine emergency interrupting system based on FPGA |
| CN106782719B (en) * | 2017-01-04 | 2018-07-20 | 中广核研究院有限公司 | Presurized water reactor power generator turbine, which has tripped, characterizes signal generating method |
| CN109519234B (en) * | 2018-09-03 | 2023-07-25 | 大唐陕西发电有限公司 | Protection method for preventing small steam turbine from refusing operation |
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| US3928975A (en) * | 1974-06-06 | 1975-12-30 | Westinghouse Electric Corp | Electrical system for electrohydraulic emergency trip system |
| CN101196739A (en) * | 2007-11-26 | 2008-06-11 | 东方电气集团东方汽轮机有限公司 | Autonomous system with redundant configuration and its configuration method |
| CN101776000A (en) * | 2009-12-28 | 2010-07-14 | 国电南京自动化股份有限公司 | Complex programmable logic array-based turbine emergency protection logic configuration method |
| CN202645649U (en) * | 2012-06-27 | 2013-01-02 | 国核自仪系统工程有限公司 | Emergency trip system of redundancy type turbine |
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2012
- 2012-06-27 CN CN201210213481.5A patent/CN102720547B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3928975A (en) * | 1974-06-06 | 1975-12-30 | Westinghouse Electric Corp | Electrical system for electrohydraulic emergency trip system |
| CN101196739A (en) * | 2007-11-26 | 2008-06-11 | 东方电气集团东方汽轮机有限公司 | Autonomous system with redundant configuration and its configuration method |
| CN101776000A (en) * | 2009-12-28 | 2010-07-14 | 国电南京自动化股份有限公司 | Complex programmable logic array-based turbine emergency protection logic configuration method |
| CN202645649U (en) * | 2012-06-27 | 2013-01-02 | 国核自仪系统工程有限公司 | Emergency trip system of redundancy type turbine |
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Address after: 200241 No. 428 East Jiangchuan Road, Shanghai, Minhang District Patentee after: STATE NUCLEAR POWER AUTOMATION SYSTEM ENGINEERING Co.,Ltd. Address before: 200241. A2036, building B, building 555, Dongchuan Road, Minhang District, Shanghai Patentee before: STATE NUCLEAR POWER AUTOMATION SYSTEM ENGINEERING Co.,Ltd. |
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