CN109147978A - A kind of circuit loose part monitoring device and its method for nuclear power unit - Google Patents
A kind of circuit loose part monitoring device and its method for nuclear power unit Download PDFInfo
- Publication number
- CN109147978A CN109147978A CN201810690750.4A CN201810690750A CN109147978A CN 109147978 A CN109147978 A CN 109147978A CN 201810690750 A CN201810690750 A CN 201810690750A CN 109147978 A CN109147978 A CN 109147978A
- Authority
- CN
- China
- Prior art keywords
- signal
- unit
- digital signal
- circuit
- vibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21D—NUCLEAR POWER PLANT
- G21D3/00—Control of nuclear power plant
- G21D3/04—Safety arrangements
- G21D3/06—Safety arrangements responsive to faults within the plant
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Testing And Monitoring For Control Systems (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The present invention relates to the technical fields of the malfunction monitoring of million millions nuclear power stations, disclose a kind of circuit loose part monitoring device and its method for nuclear power unit, first aspect, since the signal acquisition unit of setting has the continuous acquisition record and number conversion function of vibration signal, vibration signal is saved, while facilitating user to transfer digital signal at any time and subsequent processing is carried out to it；Second aspect can reach since monitoring unit is to determine shock signal according to digital signal and carry out time domain/frequency domain processing purpose to digital signal, conducive to the accuracy for hitting signal when determining is increased.Monitoring device further includes process control unit, enable monitoring unit by fixed shock signal compared with the control command of process control unit carries out time synchronization, conducive to the generation position for determining abnormal vibrations according to comparison result, the defect that existing monitoring device can be overcome to have a single function, can not position extremely, to offer convenience for user.
Description
Technical field
The present invention relates to the technical fields of the malfunction monitoring of million millions nuclear power stations, and in particular to one kind is used for nuclear power machine
The circuit loose part monitoring device and its method of group.
Background technique
Nuclear energy power generation is a kind of important clean energy resource generation technology, with the chemical energy of nuclear fission energy proxy mineral fuel,
The boiler of thermal power generation is replaced with nuclear reactor and steam generator, is generated electricity with steam drive steam turbine.Currently, nuclear power machine
Group mainly includes the equipment such as nuclear reactor, steam generator, steam turbine, generator and power regulation and control system, wherein core is anti-
It answers the circulating water of heap to be referred to as primary Ioops system, is mainly used for inverse nuclear reaction heap and speed regulation water supply is provided, rapidly from core
Reactor obtains thermal energy and exchanges to the circulation (i.e. secondary coolant circuit system) of steam generator.Due to primary Ioops System Take
Thermal energy output important function, operating status opposite direction nuclear reactor speed regulation water supply process so that entire nuclear power unit peace
Full stable operation process all plays a crucial role, for the installation stationary state of all parts in monitoring primary Ioops system,
It needs constantly to understand the Vibration Condition of all parts, be completed frequently with primary Ioops loose-parts monitoring system (KIR)
The vibration detection of loose part, triggering warning function.
Currently, the mainly acceleration by being mounted on pressure vessel of the primary Ioops loose-parts monitoring system in nuclear power unit
Degree probe acquisition system component vibration signal during operation judges the size of vibration signal and each by KIR cabinet
Temporal correlation between signal sampling channel triggers generation alarm signal, thus instruct staff in time to loose part into
Row maintenance further damages to avoid primary Ioops system.But existing primary Ioops loose-parts monitoring system only has vibration
The function of dynamic signal acquisition and alarm triggering, the function that the continuous record and warning reason for not having vibration signal but differentiate,
Be easy to cause scene occur alarming triggered and staff can not troubleshooting awkward situation, especially in primary Ioops neutron-flux pattern
(i.e. during RPN is tested, neutron detector is mainly inserted into in-pile instrument pipe to measure the neutron flux of reactor core during measurement test
Distribution), primary Ioops loose-parts monitoring system continually generates alarm signal, and staff can not but find the basic original of alarm
Cause, also can not to triggering alarm vibration signal be analyzed and determined accordingly, can not also according to signal characteristic judge extremely come
Source is unfavorable for carrying out abnormal positioning, be unfavorable for exclude false triggering undesirable phenomenon, also can to during experiment normal operating and
Normal detection monitoring affects.
Summary of the invention
In order to solve the above technical problems, this application provides a kind of circuit loose parts for nuclear power unit to monitor dress
It sets and its method.
According in a first aspect, provide a kind of circuit loose part monitoring device for nuclear power unit in a kind of embodiment,
Include:
Vibration detecting unit, for detecting the vibration signal of circuit element in nuclear power unit；
Signal acquisition unit is connect with the vibration detecting unit signal, for acquiring the vibration signal and will be described
Vibration signal is converted to corresponding digital signal；
Monitoring unit is communicated to connect with the signal acquisition unit, for obtaining the digital signal and according to the number
Word signal, which determines, hits signal, the generating state hit signal and be used to indicate abnormal vibrations.
The circuit loose part monitoring device further includes process control unit；
The nuclear power unit includes one or more for adjusting or testing the execution equipment of operating states of the units, the mistake
Process control unit with the execution equipment for connecting, for sending control command to the execution equipment to control the execution
The execution state of equipment；The monitoring unit and the process control unit communicate to connect, for obtaining the control command, and
According to the control command and the generation position hit signal and judge abnormal vibrations.
The process control unit includes group selector, and the execution equipment includes multiple neutron detectors；
The group selector is used to send the control command of test to each neutron detector and selects one of them
Neutron detector is as current neutron measurement channel；When the monitoring unit judges the control command of the test and described hits
Hit the time synchronization of signal, it is determined that current neutron measurement channel generates abnormal vibrations.
The vibration detecting unit includes one or more acceleration probes, and each acceleration probe is for being arranged in nuclear power
Multiple positions of circuit element in unit, to detect the vibration signal of position respectively.
The signal acquisition unit includes one or more input channels, each input channel be respectively used to it is described each
Acceleration probe connection, the vibration signal for being respectively used to receive are converted to corresponding digital signal.
The monitoring unit, which obtains the digital signal and determines according to the digital signal, hits signal, comprising: described
Monitoring unit obtains the digital signal；The monitoring unit carries out Time Domain Processing to the digital signal and/or frequency domain is handled,
Obtain the corresponding characteristic signal of the digital signal；When a characteristic value of the characteristic signal is more than threshold value, it is determined that institute
Stating is shock signal with the signal of this feature value corresponding position on characteristic signal.
The circuit loose part monitoring device further includes alarm unit, and the alarm unit and the monitoring unit are believed
Number connection, for generating warning message when the monitoring unit determines the shock signal.
According to second aspect, a kind of circuit loose part monitoring method for nuclear power unit is provided in a kind of embodiment,
The following steps are included:
Obtain the vibration signal of circuit element in nuclear power unit；
The vibration signal is converted into corresponding digital signal；
It determines according to the digital signal and hits signal, the generating state hit signal and be used to indicate abnormal vibrations.
Described determine according to the digital signal hits signal, comprising:
Obtain the digital signal；
Time Domain Processing and/or frequency domain processing are carried out to the digital signal, obtain the corresponding feature letter of the digital signal
Number；
When a characteristic value of the characteristic signal is more than threshold value, then by the spy on the characteristic signal and more than threshold value
The corresponding signal of value indicative is as shock signal.
The circuit loose part monitoring method further includes that abnormal vibrations determine step, and the abnormal vibrations determine step
Suddenly include:
The control command of one execution equipment of control in nuclear power unit is obtained, the execution equipment is for adjusting or test machine
The operating status of group；
Judge the generation positions of abnormal vibrations according to the control command and the signal that hits, if the control command with
The time synchronization for hitting signal, it is determined that the execution equipment of the control command control generates abnormal vibrations.
The beneficial effect of the application is:
According to a kind of circuit loose part monitoring device and its method for nuclear power unit of above-described embodiment, monitoring dress
It sets including vibration detecting unit, signal acquisition unit, monitoring unit etc., monitoring method includes the vibration signal for obtaining circuit element
And vibration signal is carried out digital conversion and is determined according to digital signal to hit signal.In a first aspect, due to the signal of setting
Acquisition unit has the continuous acquisition record and number conversion function of vibration signal, so that the vibration signal in one section of long period
It can be saved, while facilitate user to transfer digital signal at any time and subsequent processing is carried out to it；Second aspect, due to monitoring
Unit is that shock signal is determined according to digital signal, can reach and carries out time domain/frequency domain processing purpose to digital signal, quickly
Realize that signal peak lookups, time shaft comparison, Fourier transformation etc. operate, conducive to according to digital signal in time domain/frequency domain
Characteristic, which determines, hits signal, conducive to the accuracy for hitting signal when determining is increased.In addition, monitoring device further includes process control
Unit enables monitoring unit that the control command of fixed shock signal and process control unit is carried out time synchronization ratio
Compared with existing monitoring device being overcome to have a single function, can not be abnormal conducive to the generation position for determining abnormal vibrations according to comparison result
The defect of positioning, to offer convenience for user.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of circuit loose part monitoring device；
Fig. 2 is the structural schematic diagram of another circuit loose part monitoring device；
Fig. 3 is the comparison diagram of normal vibration signal and shock signal in time domain；
Fig. 4 is the comparison diagram of normal vibration signal and shock signal in frequency domain；
Fig. 5 is the flow diagram of circuit loose part monitoring method；
Fig. 6 is the flow diagram of the monitoring method of monitoring unit；
Fig. 7 is the flow diagram that abnormal vibrations determine step.
Specific embodiment
Below by specific embodiment combination attached drawing, invention is further described in detail.Wherein different embodiments
Middle similar component uses associated similar element numbers.In the following embodiments, many datail descriptions be in order to
The application is better understood.However, those skilled in the art can recognize without lifting an eyebrow, part of feature
It is dispensed, or can be substituted by other elements, material, method in varied situations.In some cases, this Shen
Please it is relevant it is some operation there is no in the description show or describe, this is the core in order to avoid the application by mistake
More descriptions are flooded, and to those skilled in the art, these relevant operations, which are described in detail, not to be necessary, they
Relevant operation can be completely understood according to the general technology knowledge of description and this field in specification.
It is formed respectively in addition, feature described in this description, operation or feature can combine in any suitable way
Kind embodiment.Meanwhile each step in method description or movement can also can be aobvious and easy according to those skilled in the art institute
The mode carry out sequence exchange or adjustment seen.Therefore, the various sequences in the description and the appended drawings are intended merely to clearly describe a certain
A embodiment is not meant to be necessary sequence, and wherein some sequentially must comply with unless otherwise indicated.
It is herein component institute serialization number itself, such as " first ", " second " etc., is only used for distinguishing described object,
Without any sequence or art-recognized meanings.And " connection ", " connection " described in the application, unless otherwise instructed, include directly and
It is indirectly connected with (connection).
Referring to FIG. 1, this application discloses a kind of circuit loose part monitoring devices for nuclear power unit comprising vibration
Dynamic detection unit 11, signal acquisition unit 13 and monitoring unit 15, each unit is successively communicatively coupled, and is illustrated separately below.
Vibration detecting unit 11 is a kind of detection part of vibration signal, mainly for detection of circuit portion in nuclear power unit N0
The vibration signal of part N01.In one embodiment, vibration detecting unit 11 includes one or more acceleration probes, each acceleration
The multiple positions popped one's head in for circuit element N01 in nuclear power unit to be arranged in are spent, to detect the vibration signal of position respectively.
Here acceleration probe refers to various types of vibrating sensors or can measure the acceleration transducer of vibratory output, such
The vibratory output that sensor usually will test is converted into the quantity of electric charge and is exported, then sensors with auxiliary electrode should also turn including charge
The quantity of electric charge is converted to voltage signal/current signal and exported by parallel operation, since acceleration probe belongs to the prior art, this
In be no longer described in detail.
It should be noted that there are many circuits in nuclear power unit N0, such as (usually for the circulating water loop of nuclear reactor
Referred to as primary Ioops), for the circulating water loop (commonly referred to as secondary circuit) of steam generator, for the steam-return line of steam turbine,
These circuits are made of circuit elements such as pipeline, pressure vessel, circulating pumps, due to the flowing of water or steam in circuit, are caused
Mechanical oscillation occur for circuit element, and mechanical oscillation are smaller under normal conditions and will not cause the loosening of circuit element, and mechanical vibration
Move the loosening that excessive equal abnormal vibrations situation often causes circuit element, for avoid circuit element loosen caused circuit without
The situation that method works normally just is arranged acceleration on multiple positions of circuit element and pops one's head in, and passes through detection vibration, abnormal vibrations
Alarm, the modes such as debugging achieve the purpose that loop works process overall monitor in time.Preferably, by the vibration in the present embodiment
Dynamic detection unit is arranged on the pressure vessel of primary Ioops, is detected on primary Ioops by the acceleration transducer on pressure vessel
Vibration signal, to understand the working condition of primary Ioops constantly.
Signal acquisition unit 13 is connect with 11 signal of vibration detecting unit, is mainly used for acquiring vibration signal and is believed vibration
Number be converted to corresponding digital signal.In one embodiment, signal acquisition unit 13 includes one or more input channels, each
Input channel is respectively used to connect with each acceleration probe in vibration detecting unit 11, is respectively used to the vibration that will be received
Signal is converted to corresponding digital signal.In one embodiment, can choose Shanghai number can measurement and control instrument equipment development
SK9172 vibration monitor acquires as signal acquisition unit, SK9172 vibration monitor data with higher, is stronger
Digital transfer capability, biggish disk storage space, can be realized the collection effect of the other vibration signal of Millisecond, when can be long
Between the corresponding digital signal of vibration signal is saved.In another specific embodiment, if the signal of vibration detecting unit
Line is connected to the control mainboard of cabinet, then can connect signal acquisition unit by the external bnc interface in control mainboard
It connects, to realize that vibration signal is rapidly transmitted to signal acquisition unit.
Monitoring unit 15 and signal acquisition unit 13 communicate to connect, for obtaining digital signal and being determined according to digital signal
Signal is hit, shock signal here is used to indicate the generating state of abnormal vibrations.In one embodiment, monitoring unit 15 is meter
Calculation machine etc. has the platform of data-handling capacity, and monitoring unit 15 is read from signal acquisition unit 13 in real time and is vibrated
The corresponding digital signal of signal, and the processing of time domain/frequency domain is carried out to digital signal, according to time domain/frequency domain processing result
It determines and hits signal.In one embodiment, monitoring unit 15, which obtains digital signal and determined according to digital signal, hits letter
Number detailed process are as follows:
(1) monitoring unit 15 obtains digital signal from signal acquisition unit 13.
(2) monitoring unit 15 carries out Time Domain Processing to digital signal and/or frequency domain is handled, and obtains the corresponding spy of digital signal
Reference number.If after carrying out Time Domain Processing, then, when the corresponding characteristic signal of digital signal should include the sampling of each data point
Between and range value；If after carrying out frequency domain processing, then, digital signal should include frequency values, the range value of each data point.
(3) when a characteristic value of characteristic signal is more than threshold value, it is determined that position corresponding with this feature value on characteristic signal
The signal set is to hit signal.In a specific embodiment, see Fig. 3, illustrate normal vibration signal and hit signal when
Contrast effect in domain, the characteristic value (i.e. range value) of vibration signal under normal circumstances be in the range of [- 1,1], and
Occurs the pulse signal that three range values are more than the range when 262ms or so, in vibration signal, then can be by those pulses
Signal implies as signal is hit and produces biggish mechanical oscillation three times on circuit element.In another specific embodiment
In, see Fig. 4, illustrates normal vibration signal and hit contrast effect of the signal in frequency domain, vibration signal is under normal circumstances
Characteristic value (i.e. range value) it is smaller, only the vibration signal near 15628Hz just has higher range value, still, at certain
It is a to meet the characteristic for hitting signal compared with occurring the lifting of full frequency-domain in minor time slice, in vibration signal, then, it can should be compared with
Vibration signal in minor time slice is as shock signal.
It will be understood by those of skill in the art that can realize the continuous acquisition note of vibration signal by signal acquisition unit 13
Record and digital conversion function, so that the vibration signal in one section of long period can be saved, while monitoring unit 15 can be with
When transfer digital signal and subsequent processing carried out to it.Moreover, monitoring unit 15 is that shock signal is determined according to digital signal,
It can reach and time domain/frequency domain processing purpose is carried out to digital signal, rapidly realize that signal peak is searched, time shaft compares, Fu
In the operation such as leaf transformation, hit signal conducive to determining according to characteristic of the digital signal in time domain/frequency domain, be conducive to increase and hit letter
Accuracy number when determining.
In another embodiment, referring to FIG. 2, loose part monitoring device in circuit disclosed in the present application further includes process
Control unit 17.Nuclear power unit N0 includes one or more for adjusting or testing the execution equipment N02 of operating states of the units, mistake
Process control unit 17 is used to connect with execution equipment N02, for sending control command to execution equipment N02 to control execution equipment
The execution state of N02.Monitoring unit 15 and process control unit 17 communicate to connect, the control for acquisition process control unit 17
Order, and the generation position of abnormal vibrations is judged with shock signal according to the control command.It should be noted that execution here
Equipment N02 is instrument and equipment relevant to circuit element N01 in nuclear power unit, such as water pump, motor-driven valve in circulating water loop
Neutron measurement channel etc. in door, nuclear reactor.
In a specific embodiment, process control unit 17 includes group selector, and executing equipment N02 includes multiple neutrons
Detector.So, during the neutron-flux pattern measurement test (RPN test) of primary Ioops, group selector is used for each neutron
Detector sends the control command of test and selects one of neutron detector as current neutron measurement channel, to obtain
The relevant neutron-flux pattern of nuclear reactor.Then, same when the control command of monitoring unit judgement test and the time of shock signal
Step, it is determined that current neutron measurement channel generates abnormal vibrations.
It will be understood by those of skill in the art that enabling monitoring unit 15 that will have determined that by process control unit 17
Hit signal with process control unit 17 control command carry out time synchronization compared with, be conducive to according to comparison result determine exception
The generation position of vibration, the defect that existing monitoring device can be overcome to have a single function, can not position extremely, to be brought just for user
Benefit.
Further, in another embodiment, with reference to Fig. 2, loose part monitoring device in circuit disclosed in the present application is also
Including alarm unit 19, which connect with 15 signal of monitoring unit, hits signal for determining in monitoring unit 15
When generate warning message.Here warning message includes that abnormal vibrations generate the contents such as prompt, abnormal vibrations positioning indicating, can be
The arbitrary forms such as sound, text, warning light.
It will be understood by those of skill in the art that disclosed herein as well is a kind of circuit loose parts for nuclear power unit
Monitoring method illustrates separately below referring to FIG. 5, the circuit loose part monitoring method includes step S100-S300.
Step S100 obtains the vibration signal of circuit element in nuclear power unit.In one embodiment, see Fig. 1, vibration detection
Single 11 obtain the vibration signal of circuit element N01 in nuclear power unit N0 by one or more acceleration transducers.
Vibration signal is converted to corresponding digital signal by step S200.In one embodiment, see Fig. 1, signal acquisition list
Member 13 receives the vibration signal that vibration detecting unit 11 exports, and will be turned per vibration signal all the way by each input channel of itself
Turn to corresponding digital signal, to every road vibration signal carry out the corresponding digital signal of the road continuous acquisition Bing Jiangmei vibration signal into
Row record and preservation.
Step S300 is determined according to digital signal and is hit signal, and shock signal here is used to indicate the hair of abnormal vibrations
Raw state.In one embodiment, monitoring unit 15 is determined according to digital signal hits signal, refers to Fig. 6, step S300 can be wrapped
Step S310-S340 is included, is respectively described below.
Step S310, monitoring unit 15 obtain digital signal from signal acquisition unit 13.
Step S320, monitoring unit 15 carries out Time Domain Processing to digital signal and/or frequency domain is handled, and obtains digital signal pair
The characteristic signal answered.Due to Time Domain Processing, the conventional means that frequency domain processing is Digital Signal Processing, belong to the prior art, here
No longer it is described in detail.
Step S330, monitoring unit 15 judge the corresponding characteristic signal of digital signal, when one of characteristic signal
When characteristic value is more than threshold value, then using on characteristic signal be more than the corresponding signal of the characteristic value of threshold value as shock signal.It determines
The process for hitting signal can be found in the corresponding embodiment of Fig. 3, Fig. 4, and above to the description of two figures.
In another embodiment, Fig. 2 and Fig. 7 are please referred to, the also disclosed circuit loose part monitoring method of the application is also
Abnormal vibrations determine step S400, which is the next step of step S300, and mainly monitoring unit 15 is according to excessively program-controlled
Control command that unit 17 processed exports and the shock signal itself determined judge the generation positions of abnormal vibrations, and step S400 can
Including step S410-S440, it is described as follows.
Step S410, monitoring unit 15 obtain itself fixed shock signal, and the process for obtaining shock signal can refer to
Step S300, is not discussed here.
Step S420, monitoring unit 15 obtain the control command of one execution equipment N02 of control in nuclear power unit N0, here
Execution equipment N02 be used to adjusting or testing the operating status of unit.In one embodiment, 15 acquisition group of monitoring unit is selected
The control command about test that device is sent to neutron detector is selected, control command here should include sending time.
Step S430, monitoring unit 15 judge the sending time of control command and hit whether together signal fixes time really
Whether the time difference of step, i.e. both this signal meets error range set by user.If satisfied, then thinking that signal is synchronous and enters
Step S440；It is on the contrary, then it is assumed that signal is asynchronous and enters step S410, continues to obtain next shock signal.
Step S440 judges the generation position of abnormal vibrations according to control command and shock signal.In a specific embodiment
In, if the time synchronization of control command and shock signal, it is determined that the execution equipment of control command control generates abnormal vibrations, example
Such as, during primary Ioops neutron-flux pattern measures test (RPN test), group selector sends to each neutron detector and surveys
The control command of examination selects one of neutron detector as current neutron measurement channel, since neutron detector receives
Operation effect when to control command, so that neutron measurement channel vibrates, to transfer vibrations to time on primary Ioops
Circuit unit, the shock signal for causing monitoring unit 15 to obtain and control command synchronism with higher in time, then, just
It can determine that current neutron measurement channel produces abnormal vibrations.After the generation position of abnormal vibrations determines, monitoring unit
15 can issue the message that abnormal vibrations generate prompt, abnormal vibrations positioning indicating by alarm unit 19, so that work people
Member understands generation position and the reason of abnormal vibrations, so instruct staff carry out alarm ignore, the work such as Breakdown Maintenance.
By loose part monitoring method in circuit disclosed in step S100-S400 it is found that circuit disclosed in the present application loosens
Component monitoring device can bring some benefits for nuclear power plant, comprising:
(1) it is conducive in the operational process of nuclear power unit, especially in primary Ioops neutron-flux pattern measurement test (RPN examination
Test) during, it searches alarm unit and is triggered the basic reason of alarm, specify the direction of cause investigation.
(2) be conducive to staff know primary Ioops not instead of there are alarming caused by loose part, primary Ioops neutron
Abnormal vibrations caused by flux pattern measurement is tested, so as to cause alarm, avoid the work of possible inspection shutdown.
(3) structure of this circuit loose part monitoring device is simple, and existing instrument and equipment is utilized to the greatest extent, looks for
The new method solved suitable for site problems has been arrived, meanwhile, the issuable expense such as project outsourcing, consulting is also saved, benefit
In the progress for pushing primary Ioops neutron-flux pattern test experiments.
(4) possible position of positioning field device exception can be facilitated, specify direction for the service work in overhaul.
It will be understood by those skilled in the art that all or part of function of various methods can pass through in above embodiment
The mode of hardware is realized, can also be realized by way of computer program.When function all or part of in above embodiment
When being realized by way of computer program, which be can be stored in a computer readable storage medium, and storage medium can
To include: read-only memory, random access memory, disk, CD, hard disk etc., it is above-mentioned to realize which is executed by computer
Function.For example, program is stored in the memory of equipment, when executing program in memory by processor, can be realized
State all or part of function.In addition, when function all or part of in above embodiment is realized by way of computer program
When, which also can store in storage mediums such as server, another computer, disk, CD, flash disk or mobile hard disks
In, through downloading or copying and saving into the memory of local device, or version updating is carried out to the system of local device, when logical
When crossing the program in processor execution memory, all or part of function in above embodiment can be realized.
Use above specific case is illustrated the present invention, is merely used to help understand the present invention, not to limit
The system present invention.For those skilled in the art, according to the thought of the present invention, can also make several simple
It deduces, deform or replaces.
Claims (10)
1. a kind of circuit loose part monitoring device for nuclear power unit characterized by comprising
Vibration detecting unit, for detecting the vibration signal of circuit element in nuclear power unit；
Signal acquisition unit is connect with the vibration detecting unit signal, for acquiring the vibration signal and by the vibration
Signal is converted to corresponding digital signal；
Monitoring unit is communicated to connect with the signal acquisition unit, for obtaining the digital signal and being believed according to the number
It number determines and to hit signal, the signal that hits is used to indicate the generating states of abnormal vibrations.
2. loose part monitoring device in circuit as described in claim 1, which is characterized in that further include process control unit；
The nuclear power unit includes one or more for adjusting or testing the execution equipment of operating states of the units, described excessively program-controlled
Unit processed with the execution equipment for connecting, for sending control command to the execution equipment to control the execution equipment
Execution state；The monitoring unit and the process control unit communicate to connect, for obtaining the control command, and according to
The control command and the generation position hit signal and judge abnormal vibrations.
3. loose part monitoring device in circuit as claimed in claim 2, which is characterized in that the process control unit includes group
Selector, the execution equipment includes multiple neutron detectors；
The group selector is used to send the control command of test to each neutron detector and selects one of neutron
Detector is as current neutron measurement channel；When the monitoring unit judges the control command and shock letter of the test
Number time synchronization, it is determined that current neutron measurement channel generates abnormal vibrations.
4. loose part monitoring device in circuit as described in claim 1, which is characterized in that the vibration detecting unit includes one
A or multiple acceleration probes, multiple positions that each acceleration is popped one's head in for circuit element in nuclear power unit to be arranged in, to divide
Not Jian Ce position vibration signal.
5. loose part monitoring device in circuit as claimed in claim 4, which is characterized in that the signal acquisition unit includes one
A or multiple input channels, each input channel are respectively used to connect with each acceleration probe, are respectively used to receive
To vibration signal be converted to corresponding digital signal.
6. loose part monitoring device in circuit as described in claim 1, which is characterized in that the monitoring unit obtains the number
Word signal simultaneously determines shock signal according to the digital signal, comprising:
The monitoring unit obtains the digital signal；
The monitoring unit carries out Time Domain Processing to the digital signal and/or frequency domain is handled, and it is corresponding to obtain the digital signal
Characteristic signal；
When a characteristic value of the characteristic signal is more than threshold value, it is determined that position corresponding with this feature value on the characteristic signal
The signal set is to hit signal.
7. loose part monitoring device in circuit as described in claim 1, which is characterized in that it further include alarm unit, the report
Alert unit is connect with the monitoring unit signal, is disappeared for generating alarm when the monitoring unit determines the shock signal
Breath.
8. a kind of circuit loose part monitoring method for nuclear power unit, which comprises the following steps:
Obtain the vibration signal of circuit element in nuclear power unit；
The vibration signal is converted into corresponding digital signal；
It determines according to the digital signal and hits signal, the generating state hit signal and be used to indicate abnormal vibrations.
9. loose part monitoring method in circuit as claimed in claim 8, which is characterized in that described true according to the digital signal
Surely signal is hit, comprising:
Obtain the digital signal；
Time Domain Processing and/or frequency domain processing are carried out to the digital signal, obtain the corresponding characteristic signal of the digital signal；
When a characteristic value of the characteristic signal is more than threshold value, then by the characteristic value on the characteristic signal and more than threshold value
Corresponding signal is as shock signal.
10. loose part monitoring method in circuit as claimed in claim 8, which is characterized in that further include that abnormal vibrations determine step
Suddenly, the abnormal vibrations determine that step includes:
The control command of one execution equipment of control in nuclear power unit is obtained, the execution equipment is for adjusting or testing unit
Operating status；
The generation positions of abnormal vibrations is judged according to the control command and the signal that hits, if the control command and described
Hit the time synchronization of signal, it is determined that the execution equipment of the control command control generates abnormal vibrations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810690750.4A CN109147978B (en) | 2018-06-28 | 2018-06-28 | Loop loose part monitoring device and method for nuclear power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810690750.4A CN109147978B (en) | 2018-06-28 | 2018-06-28 | Loop loose part monitoring device and method for nuclear power unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109147978A true CN109147978A (en) | 2019-01-04 |
| CN109147978B CN109147978B (en) | 2020-11-24 |
Family
ID=64802592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810690750.4A Expired - Fee Related CN109147978B (en) | 2018-06-28 | 2018-06-28 | Loop loose part monitoring device and method for nuclear power unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109147978B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426221A (en) * | 2019-05-23 | 2019-11-08 | 中国航空工业集团公司上海航空测控技术研究所 | A kind of mechanical fault detection system and its detection method |
| CN110580960A (en) * | 2019-09-11 | 2019-12-17 | 阳江核电有限公司 | foreign matter monitoring system and method for secondary loop of pressurized water reactor nuclear power station |
| CN116399404A (en) * | 2023-06-06 | 2023-07-07 | 成都鼎毅维元科技有限公司 | Network communication management system and method based on big data analysis |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127252A (en) * | 2006-08-17 | 2008-02-20 | 韩国原子力研究院 | Integrated monitoring method for nuclear device and system using the same |
| JP2009198365A (en) * | 2008-02-22 | 2009-09-03 | National Agriculture & Food Research Organization | Radiation surveillance system using plastic scintillator as detector |
| CN102117666A (en) * | 2009-12-31 | 2011-07-06 | 中国核动力研究设计院 | Impactor |
| CN102706548A (en) * | 2012-05-30 | 2012-10-03 | 冯平 | Bolt or nut loosening monitoring device |
| JP2015075855A (en) * | 2013-10-08 | 2015-04-20 | 株式会社東芝 | Plant operation monitoring apparatus, method and program |
| CN105225433A (en) * | 2015-08-22 | 2016-01-06 | 上海核工程研究设计院 | A kind of nuclear power station loose parts monitor and alarm system and method |
| CN105427904A (en) * | 2015-11-13 | 2016-03-23 | 陕西卫峰核电子有限公司 | Loose part positioning method based on nuclear power station |
| CN106409351A (en) * | 2016-09-13 | 2017-02-15 | 中广核工程有限公司 | Method and device for processing vibration signal of loose part of nuclear power plant |
| CN107146648A (en) * | 2017-05-05 | 2017-09-08 | 中广核工程有限公司 | A kind of monitoring system and method for nuclear power generating equipment |
| CN107767975A (en) * | 2017-10-17 | 2018-03-06 | 中北大学 | A kind of nuclear power unit closes the monitoring and fault diagnosis method of heavy parts capability and performance |
-
2018
- 2018-06-28 CN CN201810690750.4A patent/CN109147978B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101127252A (en) * | 2006-08-17 | 2008-02-20 | 韩国原子力研究院 | Integrated monitoring method for nuclear device and system using the same |
| JP2009198365A (en) * | 2008-02-22 | 2009-09-03 | National Agriculture & Food Research Organization | Radiation surveillance system using plastic scintillator as detector |
| CN102117666A (en) * | 2009-12-31 | 2011-07-06 | 中国核动力研究设计院 | Impactor |
| CN102706548A (en) * | 2012-05-30 | 2012-10-03 | 冯平 | Bolt or nut loosening monitoring device |
| JP2015075855A (en) * | 2013-10-08 | 2015-04-20 | 株式会社東芝 | Plant operation monitoring apparatus, method and program |
| CN105225433A (en) * | 2015-08-22 | 2016-01-06 | 上海核工程研究设计院 | A kind of nuclear power station loose parts monitor and alarm system and method |
| CN105427904A (en) * | 2015-11-13 | 2016-03-23 | 陕西卫峰核电子有限公司 | Loose part positioning method based on nuclear power station |
| CN106409351A (en) * | 2016-09-13 | 2017-02-15 | 中广核工程有限公司 | Method and device for processing vibration signal of loose part of nuclear power plant |
| CN107146648A (en) * | 2017-05-05 | 2017-09-08 | 中广核工程有限公司 | A kind of monitoring system and method for nuclear power generating equipment |
| CN107767975A (en) * | 2017-10-17 | 2018-03-06 | 中北大学 | A kind of nuclear power unit closes the monitoring and fault diagnosis method of heavy parts capability and performance |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426221A (en) * | 2019-05-23 | 2019-11-08 | 中国航空工业集团公司上海航空测控技术研究所 | A kind of mechanical fault detection system and its detection method |
| CN110580960A (en) * | 2019-09-11 | 2019-12-17 | 阳江核电有限公司 | foreign matter monitoring system and method for secondary loop of pressurized water reactor nuclear power station |
| CN116399404A (en) * | 2023-06-06 | 2023-07-07 | 成都鼎毅维元科技有限公司 | Network communication management system and method based on big data analysis |
| CN116399404B (en) * | 2023-06-06 | 2023-08-04 | 成都鼎毅维元科技有限公司 | Network communication management system and method based on big data analysis |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109147978B (en) | 2020-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109147978A (en) | A kind of circuit loose part monitoring device and its method for nuclear power unit | |
| WO2018028136A1 (en) | Battery management system testing system and method | |
| CN100561246C (en) | Load behavior is discerned the method for generator rotor interturn short-circuit fault down automatically | |
| Thie | Core motion monitoring | |
| CN106595842B (en) | A kind of Generator Vibration monitoring system and monitoring method based on external sensor | |
| CN114255784A (en) | Substation equipment fault diagnosis method based on voiceprint recognition and related device | |
| KR101268474B1 (en) | Predictive diagnostic method and system on mechanical integrity of generator stator | |
| Hudon et al. | The importance of phase resolved partial discharge pattern recognition for on-line generator monitoring | |
| EP2622362B1 (en) | Nondestructive inspection method for a heat exchanger employing adaptive noise thresholding | |
| KR100330258B1 (en) | Inspecting method for generator stator windings | |
| Smith | Monitoring/diagnostic systems enhance plant asset management | |
| CN113537289B (en) | Method and system for training device model of target device through sample doping | |
| JPH0236141Y2 (en) | ||
| Agarwal et al. | Assessing advanced test reactor process states using acoustic measurement infrastructure | |
| JP2000046899A (en) | Method and system for observing spectrum of power supply current | |
| Bastl et al. | The influence of noise diagnostic techniques on the safety and availability of nuclear power plants | |
| Izumi et al. | Development of a loose parts detection and diagnostic system | |
| Suzudo et al. | Monitoring and analysis of nuclear power plant signals based on nonlinear dynamical methodology | |
| Danilin et al. | Diagnostics and monitoring of the operating condition of steam-turbine blades | |
| Belinco et al. | Vibration monitoring of the Atucha-I NPP reactor vessel: experience and future improvements | |
| Yang et al. | First Loop Loose Parts Field Diagnosis | |
| CN113758519A (en) | Fault detection method and device, computer equipment and storage medium | |
| Jax et al. | New generation of diagnostic systems for nuclear power plants | |
| Allen et al. | Use of portable instrumentation/PC for loose-part monitor sensor validation, impact detection, and characterization | |
| CN116717410A (en) | State detection method and device for hydroelectric generating set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201124 Termination date: 20210628 |