CN103426483B - A kind of main pump trip-out logic control method for two loops - Google Patents
A kind of main pump trip-out logic control method for two loops Download PDFInfo
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- CN103426483B CN103426483B CN201210163733.8A CN201210163733A CN103426483B CN 103426483 B CN103426483 B CN 103426483B CN 201210163733 A CN201210163733 A CN 201210163733A CN 103426483 B CN103426483 B CN 103426483B
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The present invention relates to a kind of main pump trip-out logic control method for two loops, monitor tach signal when there being two or more in autonomous channel and reach low definite value, and the power of reactor is when more than P7, reactor emergency shut-down, startup turbine driven auxiliary feed-water pump; Reach low definite value when having one or more to monitor in autonomous channel IP, IIIP, and reach low definite value when there being two or more to monitor in autonomous channel, and power is when more than P7, a main pump tripping operation; Reach low definite value when having one or more to monitor in autonomous channel IIP, IVP, and reach low definite value when there being two or more to monitor in autonomous channel, and power is when more than P7, No. two main pump tripping operations.Adopt the present invention's main pump because not affecting the normal operation of another main pump when self reason is stopped transport, can keep the forced circulation of single loop, the Residual heat removal for reactor is favourable, advantageously in the reliable and secure operation of nuclear power plant.
Description
Technical field
The present invention relates to a kind of main pump trip-out logic control method for two loops, particularly relate to a kind of two generation pressure (hydraulic) water heap-type nuclear power plant's instrument and the main pump trip-out logic control method for two loops in control technology field.
Background technology
In Qinshan the second stage of the project 1, No. 2 unit reactor protection systems; devise reactor coolant pump (hereinafter referred to as main pump) rotating speed low and be greater than P7(P7 at the power of reactor and represent core power level; for 10% of full power) time emergency shut-down, simultaneously two main pumps tripping operations and the function of stopping transport.This function be when occur main pump supply frequency that electric network fault causes low cause main pump rotating speed low thus flow is low, reactor is protected.
Steering logic is shown in Fig. 1.For the feature of Qinshan second phase nuclear power plant two loop nuclear island, be provided with 1# and 2# two main pumps, every platform main pump arranges two tach signals; A loop main pump tach signal is by autonomous channel IP, IIIP channel transfer, and No. two loop main pump tach signals are by autonomous channel IIP, IVP channel transfer; Low definite value is reached, output logic " 1 " when autonomous channel monitors tach signal; When autonomous channel, IP, IIIP, IIP, IVP output logic sum is more than or equal to " 2 ", and the power of reactor is when more than P7, emergency shut-down, startup turbine driven auxiliary feed-water pump.That is, as long as have any two to reach low definite value in four tach signals of two main pumps, two main pumps all trip and stop transport, and also can produce emergency shut-down simultaneously and start turbine driven auxiliary feed-water pump.
Above-mentioned main pump trip-out logic, when a main pump fault is stopped transport, also can cause another normal main pump to stop transport, thus force reactor coolant loop to have to enter complete Natural Circulation state.Though such design can not bring risk to the safe operation of reactor, add the probability of Natural Circulation.Therefore, need badly a kind of novel main pump trip-out logic control method for two loops is provided.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of main pump trip-out logic control method for two loops being conducive to reactor waste and discharging.
For solving the problems of the technologies described above, the present invention is directed to the main pump trip-out logic control method of two loops, a loop main pump tach signal is by autonomous channel IP, IIIP channel transfer, and No. two loop main pump tach signals are by autonomous channel IIP, IVP channel transfer; Monitor tach signal when there being two or more in autonomous channel IP, IIIP, IIP, IVP and reach low definite value, and the power of reactor is when more than P7, reactor emergency shut-down, startup turbine driven auxiliary feed-water pump; Monitor tach signal when there being one or more in autonomous channel IP, IIIP and reach low definite value, and reach low definite value when there being two or more to monitor tach signal in autonomous channel IP, IIIP, IIP, IVP, and the power of reactor is when more than P7, a loop main pump tripping operation; Monitor tach signal when there being one or more in autonomous channel IIP, IVP and reach low definite value, and reach low definite value when there being two or more to monitor tach signal in autonomous channel IP, IIIP, IIP, IVP, and the power of reactor is when more than P7, No. two loop main pump tripping operations; P7 represents core power level, is 10% of full power.
Low definite value is reached, output logic " 1 " when autonomous channel monitors tach signal; When autonomous channel, IP, IIIP, IIP, IVP output logic sum is more than or equal to " 2 ", and the power of reactor is when more than P7, reactor emergency shut-down, startup turbine driven auxiliary feed-water pump; When autonomous channel, IP, IIIP output logic sum is more than or equal to " 1 ", and when autonomous channel IP, IIIP, IIP, IVP output logic sum is more than or equal to " 2 ", and the power of reactor is when more than P7, a loop main pump tripping operation; When autonomous channel, IIP, IVP output logic sum is more than or equal to " 1 ", and when autonomous channel IP, IIIP, IIP, IVP output logic sum is more than or equal to " 2 ", and the power of reactor is when more than P7, No. two loop main pump tripping operations.
After adopting the present invention, a main pump is not because affecting the normal operation of another main pump when self reason is stopped transport, like this, can keep the forced circulation of single loop, the Residual heat removal for reactor is favourable, thus advantageously in the reliable and secure operation of nuclear power plant.In addition, main pump repeated multiple times opens, stops, and has certain influence to the life-span of pump.The availability of the main pump that this scheme also improves further.The program has carried out experimental verification on two units of Qinshan second phase extension project, obtains good technique effect.
Accompanying drawing explanation
Fig. 1 is the former logic control chart of a loop main pump, No. two loop main pumps in Qinshan the second stage of the project.
Fig. 2 is the logic control chart of a kind of main pump trip-out logic control method for two loops provided by the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further detailed explanation.
A loop main pump tach signal is by autonomous channel IP, IIIP channel transfer, and No. two loop main pump tach signals are by autonomous channel IIP, IVP channel transfer; Low definite value is reached, output logic " 1 " when autonomous channel monitors tach signal; When autonomous channel, IP, IIIP, IIP, IVP output logic sum is more than or equal to " 2 ", and the power of reactor is when more than P7, reactor emergency shut-down, startup turbine driven auxiliary feed-water pump; When autonomous channel, IP, IIIP output logic sum is more than or equal to " 1 ", and when autonomous channel IP, IIIP, IIP, IVP output logic sum is more than or equal to " 2 ", and the power of reactor is when more than P7, a loop main pump tripping operation; When autonomous channel, IIP, IVP output logic sum is more than or equal to " 1 ", and when autonomous channel IP, IIIP, IIP, IVP output logic sum is more than or equal to " 2 ", and the power of reactor is when more than P7, No. two loop main pump tripping operations; P7 represents core power level, is 10% of full power.
In the present invention, trigger corresponding main pump after carrying out "AND" process to the shutdown signal of the low triggering of main pump rotating speed after two low slow-speed of revolution signals of every platform main pump carry out "or" process and trip, and the logic of shutdown and startup turbine driven auxiliary feed-water pump remains unchanged.Do a hypothesis, suppose that power is when more than P7, a low low signal of loop main pump rotating speed is have issued from IP tunnel and IIIP passage, and No. two loop main pumps do not send the low low signal of rotating speed, so, the logical scheme according to Fig. 2, after interrelated logic process, only have a loop main pump tripping operation, and No. two loop main pumps can not trip.And same hypothesis, in the logical scheme shown in Fig. 1, a loop main pump and No. two loop main pumps can trip simultaneously.
So, utilize the present invention only can have impact to the main pump sending the low low signal of rotating speed.If only have the rotating speed of a main pump low, this main pump of just only stopping transport, if two main pumps respectively have a low low signal of rotating speed, so, just by stoppage in transit two main pumps.
Claims (2)
1., for a main pump trip-out logic control method for two loops, a loop main pump tach signal is by autonomous channel IP, IIIP channel transfer, and No. two loop main pump tach signals are by autonomous channel IIP, IVP channel transfer; It is characterized in that: monitor tach signal when there being two or more in autonomous channel IP, IIIP, IIP, IVP and reach low definite value, and the power of reactor is when more than P7, reactor emergency shut-down, startup turbine driven auxiliary feed-water pump; Monitor tach signal when there being one or more in autonomous channel IP, IIIP and reach low definite value, and reach low definite value when there being two or more to monitor tach signal in autonomous channel IP, IIIP, IIP, IVP, and the power of reactor is when more than P7, a loop main pump tripping operation; Monitor tach signal when there being one or more in autonomous channel IIP, IVP and reach low definite value, and reach low definite value when there being two or more to monitor tach signal in autonomous channel IP, IIIP, IIP, IVP, and the power of reactor is when more than P7, No. two loop main pump tripping operations; P7 represents core power level, is 10% of full power.
2. a kind of main pump trip-out logic control method for two loops according to claim 1, is characterized in that: reach low definite value when any autonomous channel monitors tach signal, this autonomous channel output logic " 1 "; When autonomous channel, IP, IIIP, IIP, IVP output logic sum is more than or equal to " 2 ", and the power of reactor is when more than P7, reactor emergency shut-down, startup turbine driven auxiliary feed-water pump; When autonomous channel, IP, IIIP output logic sum is more than or equal to " 1 ", and when autonomous channel IP, IIIP, IIP, IVP output logic sum is more than or equal to " 2 ", and the power of reactor is when more than P7, a loop main pump tripping operation; When autonomous channel, IIP, IVP output logic sum is more than or equal to " 1 ", and when autonomous channel IP, IIIP, IIP, IVP output logic sum is more than or equal to " 2 ", and the power of reactor is when more than P7, No. two loop main pump tripping operations.
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| CN201210163733.8A CN103426483B (en) | 2012-05-24 | 2012-05-24 | A kind of main pump trip-out logic control method for two loops |
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| CN201210163733.8A CN103426483B (en) | 2012-05-24 | 2012-05-24 | A kind of main pump trip-out logic control method for two loops |
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| CN103426483B true CN103426483B (en) | 2016-01-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103700411B (en) * | 2013-12-15 | 2016-08-24 | 中广核工程有限公司 | The processing method of nuclear power station cooling agent loss-of-flow accident and system |
| CN103985421B (en) * | 2014-05-06 | 2016-09-28 | 中广核研究院有限公司 | The method that reactor fails to improve nuclear power generating sets safety during emergency shut-down |
| CN114038598B (en) * | 2021-11-04 | 2024-04-26 | 山东核电有限公司 | Control device system and method for passive nuclear power plant |
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| CN202196323U (en) * | 2011-08-30 | 2012-04-18 | 成都锐达自动控制有限公司 | Main transformer cooling intelligent control system of hydroelectric station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS57132204A (en) * | 1981-02-09 | 1982-08-16 | Matsushita Electric Works Ltd | Control circuit |
| JPS59214906A (en) * | 1983-05-20 | 1984-12-04 | Meidensha Electric Mfg Co Ltd | Programmable controller for controlling instrumentation |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101609327A (en) * | 2008-06-18 | 2009-12-23 | 浙江省电力试验研究院 | All-working-condition automatic RB control method |
| CN201407161Y (en) * | 2009-05-18 | 2010-02-17 | 邢台新光工程技术有限责任公司 | Spare automatic switching control system with multi-circuit power supply and multiple water pumps |
| CN201717594U (en) * | 2010-07-13 | 2011-01-19 | 北京国电智深控制技术有限公司 | Safety protection device of controlled system and system thereof |
| CN102117669A (en) * | 2010-10-29 | 2011-07-06 | 中广核工程有限公司 | Method and system for controlling seawater reservoir water level pump trip of nuclear power plant |
| CN102298980A (en) * | 2011-08-17 | 2011-12-28 | 岭东核电有限公司 | Protection exit method for million-kilowatt digital nuclear power plant reactor |
| CN202196323U (en) * | 2011-08-30 | 2012-04-18 | 成都锐达自动控制有限公司 | Main transformer cooling intelligent control system of hydroelectric station |
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