CN104361915B - Constant value test system of reactor key process measurement parameters and test method - Google Patents
Constant value test system of reactor key process measurement parameters and test method Download PDFInfo
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- CN104361915B CN104361915B CN201410491303.8A CN201410491303A CN104361915B CN 104361915 B CN104361915 B CN 104361915B CN 201410491303 A CN201410491303 A CN 201410491303A CN 104361915 B CN104361915 B CN 104361915B
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
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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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- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses a constant value test system of reactor key process measurement parameters and a test method. The system provided by the invention contaisn three independent and mutual-redundant channels and a maintenance computer, wherein each channel contains a conditioning unit, an I/O unit, a main control unit, a safety logic unit and a signal alarm unit. By a digital DCS system structure, the three mutual-redundant channels are respectively corresponding to three independent DCS control stations. The channels are isolated from each other and independently supply power, and complete computation and threshold comparison and output a corresponding digital signal to trigger the signal alarm unit to give an alarm command or trigger the safety logic unit to give a protection command. The invention has advantages as follows: errors of a constant value test are small; threshold setting is accurate and stable; hardware has low failure rate and good stability; due to diversity of test signal sources, frequency of disconnecting a terminal is minimized; constant value test time is shortened from previous 3 h/time to 1 h/time; and working time of maintenance personnel is saved.
Description
Technical field
The present invention relates to reactor critical process measurement parameter definite value test field, specifically refer to a kind of reactor key mistake
Journey measurement parameter definite value pilot system and test method.
Background technology
Hfetr(High throughput characterization) critical process measurement parameter definite value experimental rig is used for monitoring hfetr mono- time
Road key process parameters (temperature, pressure, flow and heat output of reactor), the computing of line parameter of going forward side by side and the logic judgment of superthreshold,
And alarm control signal is sent to security logic or signal alarm unit.When parameter exceeds the hfetr safety threshold setting
During value, device sends alarm signal triggering safe logic assembly with drive control rod transmission mechanism action, makes hfetr safe stopping
Close.Therefore, the correctness of key process parameters definite value Trial Verification Installation defencive function need to before each reactor startup of hfetr, be carried out,
To guarantee the operation safety of hfetr.
Though the critical process measurement parameter definite value test that hfetr adopts in the past can be realized above-mentioned defencive function well and determine
Value test function, but because relatively outmoded using simulated assembly structure technology, and Follow operation in-pile is for many years, has the disadvantages that
1) functional unit more so that parameter definite value test when, need configuration up to five sophisticated signal sources and signal defeated
Go out detection instrument, input human resources are huge, and operating efficiency is low；
2), when utilizing signal source to device input signal, need frequently to tear open in a large number, line and setting wire jumper on connecting terminal, connect
Line terminals damage larger, easily occur during reconnection cable wrong or the insecure hidden danger of wiring, etc. defect；
3) carry out parameter threshold using multiturn potentiometer to adjust, degree of regulation bad control and potentiometer is fragile；
4) standby redundancy lacks, difficult in maintenance.
Number of run with heftr increases the problems referred to above year by year and expressively becomes apparent from.
Content of the invention
It is an object of the invention to provide a kind of reactor critical process measurement parameter definite value pilot system and test method,
Make definite value test operation reliability and stability that are succinct, accurate, efficiently, simultaneously improving device.
The purpose of the present invention is achieved through the following technical solutions:
A kind of reactor critical process measurement parameter definite value pilot system it is characterised in that: include three independences and each other
The passage of redundancy and safeguard computer, each of which passage all includes:
Conditioning unit: for receipt signal input, carry out isolating and being conveyed to i/o unit of signal, by display instrument,
Parameter display system is shown；
I/o unit: the input signal of conditioning unit is conveyed to main control unit, and the output signal of main control unit is sent
To security logic or signal alarm unit；
Main control unit: input signal is entered with row operation, threshold values exports corresponding signal after being compared；
Security logic: receive each passage main control unit and send corresponding signal and carry out triggering control after logic match operation
Slotting shutdown and send shutdown alarm under system rod；
Signal alarm unit: reception main control unit sends corresponding signal and reported to the police；
Safeguard computer: the alarm threshold value of all key process parameters of hfetr is modified and tests.
The present invention is corresponded to three independent dcs respectively and is controlled using digitlization dcs structure, three passages being mutually redundant
Stand, each passage is mutually isolated and independently-powered.System receives after the signal of test, completes computing, threshold value compares output
Corresponding data signal trigger alarm unit gives a warning instruction or triggering security logic sends protection instruction.Specifically
Implementation method is:
(1) for warning instruction, three passages have a passage to send warning signal, and signal alarm unit is carried out alerting
Instruction；
(2) for protection instruction, it is divided into 3 to take 2 logics to meet and takes, with 2, key process parameters two class that 1 logic meets, to 3
Take the parameter that 2 logics meet, in three passages, any two passage sends protection signal, and safe logic assembly is carried out protection and refers to
Order；Take 1 to meet parameter for 2, then protection signal is sent by 1#, 2# passage or 2#, 3# passage, safe logic assembly is carried out protecting
Finger shield makes.Advantage of this system is that: abandon the means using simulation instrument for the research reactor key parameter definite value pilot system；System
System has definite value test error little (< 0.25%fs)；Threshold value setting is accurately and stable, avoid completely potentiometer set difficult, one section
The shortcoming finely tuned is needed after time；Hardware fault rate is lower than analog machine, good stability；Stimulus source means diversity, can
Choose according to actual needs, decrease number of sources, decrease the number of times disconnecting terminal simultaneously；Definite value test period is from mistake
3 hours/time gone, are reduced to 1 hour/time, save the working time of attendant.
A kind of reactor critical process measurement parameter definite value test method is it is characterised in that comprise the following steps:
A () conditioning unit receipt signal inputs, carry out isolating and be conveyed to i/o unit, by display instrument, ginseng of signal
Number display system is shown；
B the input signal of conditioning unit is conveyed to main control unit by () i/o unit, and the signal that main control unit is exported is sent out
Give security logic or signal alarm unit；
C () main control unit enters row operation to input signal, threshold values exports corresponding signal after being compared；
D () security logic receives the signal that in each passage, main control unit sends and carries out logical operation；
E () signal alarm unit receives the alarm signal of main control unit and is reported to the police；F () safeguards computer to hfetr
The alarm threshold value of all key process parameters is modified and is tested.
A kind of present invention reactor critical process measurement parameter definite value test method, the algorithm of the main setting including threshold value
The principle comparing with threshold value, specifically includes following steps: parameter alarm threshold value set algorithm is: (1) setup parameter normally runs
Value, sets a percent coefficient according to the actual condition of hfetr, and the 110% of for example high warning, the 120% of high protection, parameter
The product of normal operating value and this percent coefficient is as parameter alarm threshold value；(2) and then, input signal is through main control unit
It is changed into the actual value of parameter after process, then carries out Boolean comparison computing by main control unit and alarm threshold value obtaining binary " 0 "
Or " 1 "；(3) binary " 0 " or " 1 " drives actuating of relay output alarm control signal (relay contact switch amount) to rear
Continuous signal alarm unit or security logic；(4) it is to avoid measurement parameter to cause relay to touch in the fluctuation of threshold value critical part
The fluctuation of dotted state, parameter is provided with the falling value range of an alarm release after reporting to the police, after only parameter leaves this scope,
Report to the police and just can eliminate, such as: heap inlet pressure is less than 1.12mpa, heap inlet pressure parameter is reported to the police, pressure rise is extremely in principle
More than 1.12 report to the police can eliminate, but setting falling is worth for 0.98mpa, only reports to the police when pressure rise to 1.20mpa and just may be used
Eliminate, this avoid in this critical point of 1.12mpa because the fluctuation of pressure causes the fluctuation of relay contact state.
The method that described main control unit carries out alarm signal process is as follows:
First, set the alarm index of a parameter, using the product of alarm index and parameter reference value as alarm threshold value；
Then, input signal and alarm threshold value carry out logic comparison operation；
Finally, output alarm control signal is to signal alarm unit or security logic.
While carrying out alarm control signal output, report to the police also by setting and fall scope after rise to prevent the fluctuation of variable from leading
The main control unit output alarm control signal causing fluctuates.
The present invention compared with prior art, has such advantages as and beneficial effect:
1 according to the actual condition flexibly and easily arrange parameter alarm threshold value of hfetr；
2 threshold value settings are accurate and stable, avoid potentiometer to set difficulty, the shortcoming needing fine setting after a period of time completely；
3 stimulus source means diversity, can choose according to actual needs, decrease number of sources, also subtract simultaneously
Lack the number of times disconnecting terminal；
4 hardware fault rates are lower than analog machine, good stability；5 definite value test periods, from 3 hours/time in past, reduce
To 1 hour/time, save the working time of attendant.
Brief description
Accompanying drawing described herein is used for providing the embodiment of the present invention is further understood, and constitutes of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is present configuration block diagram；
The schematic diagram that Fig. 2 tests for definite value of the present invention.
Specific embodiment
For making the object, technical solutions and advantages of the present invention become more apparent, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and the exemplary embodiment of the present invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment
As shown in Fig. 1 is to 2, a kind of present invention reactor critical process measurement parameter definite value pilot system, including three mutually
For the passage of redundancy, each of which passage all includes conditioning unit: for receipt signal input, carries out the isolation of signal defeated
Give i/o unit, shown by display instrument, parameter display system；I/o unit: will be defeated for the input signal of signal element
Give main control unit, and the output signal of main control unit is sent to security logic and/or signal alarm unit；Master control list
Unit: input signal is entered with row operation, input signal and threshold values and is compared；Security logic: for receiving in each passage
The signal that main control unit sends carries out logical operation；Signal alarm unit: for receiving the alarm signal of main control unit and carrying out
Report to the police；Safeguard computer: for modifying to all parameter alarm threshold values of main control unit and testing.
Definite value test can be realized by two methods:
Method one: by disjunction testing terminal, the actual signal of instrument is disconnected with system, tester is counted by maintenance
Calculation machine provides test simulation signal, is uploaded to measurement system, and tester is again by safeguarding the output to system for the computer
Signal carries out retaking of a year or grade, to complete to test.
Method two: by disjunction testing terminal, the actual signal of instrument is disconnected with system, tester is sent out by signal
Generating apparatus are that sophisticated signal source provides test simulation signal, through disjunction calibrating terminal, are uploaded to measurement system, tester
Retaking of a year or grade is carried out to the output signal of system by maintenance tool, to complete to test.
Mode one is the main experimental mode of the present invention, and mode two is the traditional approach adopting in the past, in test event and
In the case that test parameter is completely the same, definite value test period, from 3 hours/time in past, is reduced to 1 hour/time, operating personnel
Number from 3 present people of 4 people in past/time be changed into/time.
Above-described specific embodiment, has been carried out to the purpose of the present invention, technical scheme and beneficial effect further
Describe in detail, be should be understood that the specific embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, all any modification, equivalent substitution and improvement within the spirit and principles in the present invention, done etc., all should comprise
Within protection scope of the present invention.
Claims (1)
1. a kind of reactor critical process measurement parameter definite value test method is it is characterised in that comprise the following steps:
A () conditioning unit receipt signal inputs, carry out isolating and being conveyed to i/o unit of signal, is shown by display instrument, parameter
Show that system is shown；
B the input signal of conditioning unit is conveyed to main control unit by () i/o unit, and the signal that main control unit is exported is sent to
Security logic or signal alarm unit；
C () main control unit enters row operation to input signal, threshold values exports corresponding signal after being compared；
D () security logic receives the signal that in each passage, main control unit sends and carries out logical operation；
E () signal alarm unit receives the alarm signal of main control unit and is reported to the police；
F () safeguards that computer is modified to the alarm threshold value of all key process parameters of hfetr and tested；
The method that described main control unit carries out alarm signal process is as follows:
First, set the alarm index of a parameter, using the product of alarm index and parameter reference value as alarm threshold value；
Then, input signal and alarm threshold value carry out logic comparison operation；
Finally, output alarm control signal is to signal alarm unit or security logic；
While carrying out alarm control signal output, report to the police also by setting and fall scope after rise to prevent the fluctuation of variable from leading to
Main control unit output alarm control signal fluctuates.
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| CN201410491303.8A CN104361915B (en) | 2014-09-24 | 2014-09-24 | Constant value test system of reactor key process measurement parameters and test method |
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| CN201410491303.8A CN104361915B (en) | 2014-09-24 | 2014-09-24 | Constant value test system of reactor key process measurement parameters and test method |
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| CN104361915A CN104361915A (en) | 2015-02-18 |
| CN104361915B true CN104361915B (en) | 2017-01-18 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105788687B (en) * | 2016-05-18 | 2017-10-13 | 中国核动力研究设计院 | Reactor protection system two from three meets maintenance bypass system |
| CN110085333B (en) * | 2019-04-15 | 2020-12-04 | 中广核研究院有限公司 | Protection system suitable for small-size reactor |
| CN115482944A (en) * | 2022-10-10 | 2022-12-16 | 中国核动力研究设计院 | Signal source device and system applied to reactor protection system periodic test |
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