CN106935285B - AP1000 nuclear power plant containment shell deformation detecting methods - Google Patents
AP1000 nuclear power plant containment shell deformation detecting methods Download PDFInfo
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- CN106935285B CN106935285B CN201710048824.XA CN201710048824A CN106935285B CN 106935285 B CN106935285 B CN 106935285B CN 201710048824 A CN201710048824 A CN 201710048824A CN 106935285 B CN106935285 B CN 106935285B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
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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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Abstract
The invention belongs to nuclear power generating equipment detection fields, and in particular to a kind of deformation detecting method of AP1000 nuclear power plant containment shells.During in order to solve to carry out shape changing detection by total powerstation, total powerstation is easily interfered during gathered data influences the accuracy of data acquisition, and data acquisition problem influential on construction speed, the invention discloses a kind of brand-new AP1000 nuclear power plant containment shell deformation detecting methods.The detection method is by pre-setting the datum line identical with theoretical curvature, and the datum line is portrayed in detection plate, then by carrying out direct contrasting detection between the actual curvature on datum line and curved plate surface, so as to be quickly obtained containment surface deformation situation.By using the deformation detecting method of the AP1000 nuclear power plant containment shells of the present invention, can not only accurate shape changing detection be carried out to AP1000 nuclear power plant containment shells, and other constructions are not had an impact in detection process, detection efficiency is improved, ensure that the progress of entire containment construction.
Description
Technical field
The invention belongs to nuclear power generating equipment detection fields, and in particular to a kind of shape changing detection side of AP1000 nuclear power plant containment shells
Method.
Background technology
Steel containment vessel is the important core grade module of AP1000 nuclear power stations, is the main path that non-conative function is realized.And
And steel containment vessel accommodates the main process system equipment such as reactor, steam generator, in accident work as a kind of pressure vessel
Radioactive substance is can effectively prevent under condition to leak.According to both at home and abroad to the design specification requirement of pressure vessel, vessel shell
Local surfaces deformation will be influence pressure vessel unstability an important factor for.
AP1000 nuclear power plant containment shells are mainly made of bottom (head), cover head and cylinder three parts, and each section
All it is that the curved plate for being about 44 millimeters by average thickness is welded.Wherein, bottom (head) and cover head are respectively by including five
The curved plate composition of four kinds of sizes of a different curvature value, and 64 pieces of curved plates altogether；Cylinder is by same curvature value
132 pieces of curved plates composition.Due to the difference of welding procedure level and the influence of site environment, in the welding of curved plate
The angular deformation of curved plate and line deformation may be caused in the process, and then cause the surface deformation of containment.Therefore, exist
After AP1000 containments complete the splicing of curved plate, surface deformation detection is carried out to it seems most important.
At present, shape changing detection is mainly carried out to AP1000 containments by total powerstation, method is：First by whole station
Instrument carries out data acquisition to the Inner arc or external arc of completing the containment of constructing operation；Then by the data transmission of acquisition to meter
Machine equipment is calculated, and passes through software and the data of acquisition is handled and analyzed, so as to know the deformation situation of containment.However,
It is found when being detected at the scene, the shape changing detection that AP1000 containments are carried out using total powerstation is had the following problems：1st, due to
Total powerstation belongs to high precision instrument, and sensitivity is higher, and containment construction site environment complexity is there are different constructing operations,
Therefore in the gatherer process of data is carried out by total powerstation, total powerstation is highly prone to the influence and interference of external environment, and leads
Cause the inaccuracy of gathered data.2nd, in order to ensure that total powerstation collects total data, therefore other are needed in data acquisition
Constructing operation temporarily ceases, and blocks and interferes between total powerstation and containment surface so as to avoid, so virtually influences
Whole construction speed, reduces construction efficiency.3rd, since the data of total powerstation acquisition are all point datas, in order to ensure
The accuracy of detection is, it is necessary to suitably increase the collection capacity of data.At present deformation is carried out in the bottom (head) and cover head to containment
, it is necessary to gather the detection and analysis that 1500 multi-group datas carry out deformation quantity during detection, so considerably increase and early period data are adopted again
The time that the time and later stage of collection handle data and analyzes.
The content of the invention
During in order to solve to carry out shape changing detection to AP1000 nuclear power plant containment shells by total powerstation at present, in data acquisition
Total powerstation, which is easily interfered, in the process influences the accuracy of data acquisition and needs to improve the collection capacity of data to ensure to examine
The problem of surveying precision and detection efficiency is caused to decline, the present invention propose a kind of brand-new AP1000 nuclear power plant containment shells deformation inspection
Survey method.The AP1000 containment deformation detecting methods comprise the following steps：
The first step sets datum line；According to the design curvature of detection curved plate to be measured, the camber line for choosing suitable length is made
To detect the datum line of curved plate, the benchmark curvature of a curve is identical with the design curvature of curved plate to be detected；Wherein, institute
It states datum line to portray in detection plate, the detection plate includes arc panel, supporting leg and mounting base, and the datum line is portrayed
On the surface of the arc panel, the mounting base is located at two ends of the arc panel, and the supporting leg is lived with the mounting base
Dynamic connection, and can freely stretch and fix along the radius of curvature direction of the datum line；
Second step, gathered data；First, the detection plate is supported on to the table of curved plate to be detected by the supporting leg
Face, wherein in the design radius of curvature of the datum line and curved plate to be detected is generally aligned in the same plane；Then, surveyed by ruler
The maximum range value and lowest distance value between the surface of the datum line and curved plate to be detected are measured, wherein the ruler pastes
Placing flat is on the surface of the detection plate, and extending radially out to the surface of curved plate to be detected along the datum line；
3rd step, processing and analysis data；The data collected subtract to the extension elongation of supporting leg, the number that obtains that treated
According to, should treated data are curved plate to be detected deformation quantity；Wherein, if treated, data value is positive value,
The depressed deformation of opposite check surface occurs for the arc panel to be detected；If treated data value is negative value, the arc to be detected
The bulging deformation of opposite detection faces occurs for shape plate.
Preferably, the step that the datum line is portrayed in the detection plate is：
Step S1 in AutoCAD softwares, according to the design curvature of detection curved plate to be measured, draws out one section and institute
The identical camber line of design curvature is stated, and A points and B points, the arc segment between the A points and B points are chosen on the camber line
As described datum line, the A points and B points are two endpoints of the datum line；
Step S2 in AutoCAD softwares, connects the A points and B points by straightway, forms the datum line
Chord length line；The direction of B points is directed toward along A points, n deciles are carried out to the chord length line of the datum line, are a per segment length；With distance A
M-th of Along ent of point is starting point, makees perpendicular to the chord length line and terminates in the straightway of the datum line, measures the straight line
The length of section is bmValue, wherein 1≤m≤n；Record coordinate points (a*m, the b when m is different numerical valuem)；
Step S3 on the arc panel, chooses C points and D points, wherein the straight line segment length between C points and D points
Degree is equal with the length of straigh line between the A points and B points；In the plane where the arc plate surface, using C points as
Origin establishes rectangular coordinate system, is y-axis perpendicular to x-axis wherein being x-axis along C points to the direction of D points；In the rectangular coordinate system
Interior definite coordinate points (a*m, bm) and portray on the surface of the arc panel, wherein 1≤m≤n；It is sequentially connected by straightway
Adjacent coordinate points (a*m, bm)。
Preferably, it is specific to the deformation quantity detecting step of bottom (head) in the containment or cover head：
Step T1 according to the different curvature value of different zones in the bottom (head) or cover head, is set multiple corresponding
Datum line；Wherein, each datum line corresponds to an individual detection plate, and the arc length of each datum line and corresponding region
Arc length is equal；
Step T2 carries out the curved plate for being located at the same area the data acquisition of deformation quantity successively；First, select and treat
The corresponding detection plate of detection zone, adjusts the extension elongation of two supporting legs in the detection plate, and passes through the supporting leg by institute
State the surface for the curved plate that detection plate is supported in region to be detected；Wherein, the extension elongation of two supporting legs is equal, and
Branch is located on the surface of same curved plate to be detected；The detection plate is parallel with the longitudinal seam on curved plate to be detected
It sets, and is 3~5mm with the distance between the longitudinal seam；Secondly, by ruler measure the datum line with it is described to be detected
Maximum range value and lowest distance value between curved plate surface；Wherein, the ruler, which develops, is placed on the detection plate
Surface, and extending radially out to the surface of curved plate to be detected along the datum line；Then, the mobile detection plate is to be checked to this
Survey the number for carrying out deformation quantity in region on the surface of other curved plates to the curved plate surface near next longitudinal seam
According to acquisition, it is sequentially completed and the data of the surface deformation amount of curved plate near all longitudinal seams in the region to be detected is adopted
Collection；
Step T3 using the method identical with the step T2, completes other areas in the bottom (head) or cover head
The data acquisition of the curved plate deformation quantity in domain, and all data are recorded respectively；
The corresponding leg length is individually subtracted in the data value of record by step T4, the data that obtain that treated；It should
Data that treated are the deformation quantity of curved plate to be detected；Wherein, if treated, data value is positive value, this is to be checked
It surveys arc panel and Inward deflection occurs；If treated, data value is negative value, which occurs evagination deformation.
It is further preferred that when carrying out the data acquisition of deformation quantity to bottom (head) in the containment or cover head, with institute
Initiation region of the circle horizontal zone at most edge in bottom (head) or cover head as deformation quantity data acquisition is stated, and from coil to coil carries out
Data acquisition is until the bottom of the bottom (head) or the top of the cover head；Wherein to all longitudinal seams in each region
It is numbered clockwise, in order to follow-up repetition measurement.
Preferably, it is specific to the deformation quantity detecting step of the containment middle cylinder body：
Step Y1 according to the curvature value of curved plate in the cylinder, sets corresponding datum line；Wherein, the base
The arc length of directrix is less than the arc length of single curved plate in the cylinder；
Step Y2 carries out the curved plate in the cylinder data acquisition of deformation quantity successively；First, the inspection is adjusted
The extension elongation of two supporting legs on drafting board, the extension elongation of two of which supporting leg is equal, and branch is located at curved plate to be detected
On surface；Then, data acquisition and record, wherein data acquisition are carried out to the deformation quantity of each curved plate in the cylinder
Position include：First position, it is parallel with the circumferential welded seam of curved plate to be detected, and apart from the position of 3~5mm of circumferential welded seam
It puts；The second position, it is parallel with the circumferential welded seam of curved plate to be detected, positioned at the interposition of curved plate short transverse to be detected
It puts；The third place connects the both sides horizontal direction position of two neighboring curved plate longitudinal seam to be detected；4th position, institute
State the horizontal direction position on the inside of upper and lower two edges in cylinder；
The corresponding leg length is individually subtracted in the data value of record by step Y3, the data that obtain that treated；It should
Data that treated are the deformation quantity of curved plate to be detected；Wherein, if treated, data value is positive value, this is to be checked
It surveys arc panel and Inward deflection occurs；If treated, data value is negative value, which occurs evagination deformation.
It is further preferred that the containment middle cylinder body carry out deformation quantity data acquisition when, in the cylinder most
Starting circle of the one circle curved plate of top edge as deformation quantity data acquisition, then along the cylinder short transverse from top to bottom
From coil to coil carries out curved plate the data acquisition of deformation quantity, and each layer of data acquisition region is numbered clockwise,
In order to follow-up repetition measurement.
Preferably, for detecting the arc length size of arc panel in the detection plate of the bottom (head) or cover head surface deformation amount
For fixed value, which is about the 1/5 of the bottom (head) or the unilateral arc length of cover head.
It is further preferred that for the deformation quantity of bottom (head) or cover head in the containment into the setting of line reference
When, first, by the curved plate at most edge in the initiating terminal of arc panel in the first detection plate and the bottom (head) or cover head
It aligns free end；Then, the design camber line in the bottom (head) or cover head on the curved plate at most edge is portrayed described
On arc panel；If the arc length of the arc panel is less than the design arc length on the curved plate at the most edge, the
Continue to portray the camber line on the curved plate at the most edge on the arc panel of two detection plates；If the arc length of the arc panel is big
Arc length on the curved plate at the most edge then continues to portray and the most side on the arc panel of the first detection plate
Camber line on the adjacent curved plate of the curved plate of edge, until the entire unilateral camber line of the bottom (head) or cover head is portrayed
Onto the detection plate of multiple identical sizes.
It is further preferred that the entire unilateral camber line of the bottom (head) or the cover head is continuously being portrayed into the inspection
When on drafting board, the gap of 5mm is reserved in the corresponding position of circumferential welded seam or extends the camber line of 5mm.
Using AP1000 nuclear power plant containment shells deformation detecting method of the present invention, deformation is carried out to AP1000 nuclear power plant containment shells
Detection, has the advantages that：
1st, in the present invention, by pre-setting the datum line identical with the design curvature of the curved plate in containment,
And portray the datum line in detection plate, then pass through the design curvature in detection plate and the actual curvature on curved plate surface
Between directly carry out contrasting detection, so as to quick obtaining containment surface deformation situation.So not only eliminate using total powerstation
When need to carry out instrument to set up fixed and collection in worksite data background process data complex processes, shorten entire detection and use
When, improve detection efficiency.And in entire detection process, other constructing operations are without suspending to total powerstation in containment
Data acquisition is avoided, but can synchronously be operated, so as to ensure that the entire construction speed of containment.
2nd, the present invention carries out the direct comparison that shape changing detection is a kind of line and line by detection plate to the surface of curved plate
Detection, can once complete to the shape changing detection in the range of entire datum line.It is so free of discontinuities by being carried out in detection zone
Continuity detection, improve the accuracy and precision of testing result；And reduce the collection capacity of data, in each detection plate
It only needs to record 1/10th of maximum range value and lowest distance value, only about total station point data acquisition amount, this
Sample greatly reduces treating capacity of the later stage to data.In this way, the detection method of the present invention can be applied in work progress in advance,
Construction personnel can be surveyed with side construction frontier inspection, so as in early detection deformation problems and timely processing.
3rd, the present invention according to the overall structure of bottom (head) in AP1000 nuclear power plant containment shells, cover head and cylinder it is different and
The architectural difference of single curved plate in each self-structure, to angular deformation caused by longitudinal seam in bottom (head) and cover head and
Line deformation has carried out targetedly respectively caused by longitudinal seam and circumferential welded seam cause angular deformation and circular weld in cylinder
Different zones data acquisition so as to improve the validity of data acquisition, reduces the collection capacity of data, reaches raising detection effect
The purpose of rate.
Description of the drawings
Fig. 1 is the outline structural diagram of bottom (head) in AP1000 nuclear power plant containment shells；
Fig. 2 is the structure diagram of detection plate in the present invention；
Fig. 3 is the schematic diagram that is divided to Fig. 1 mean camber line sections H1 in AutoCAD softwares；
Fig. 4 is the schematic diagram portrayed Fig. 3 mean camber line sections L1 in detection plate；
Fig. 5 is to carry out deformation quantity data acquisition to the inner surface of bottom (head) in AP1000 nuclear power plant containment shells in the present invention
When, the position distribution schematic diagram of P directions observation detection plate along Fig. 1；
Position views of the Fig. 6 between No.1 curved plate in detection plate in Fig. 5 and bottom (head)；
The method that Fig. 7 is the present invention carries out deformation quantity data acquisition to the inner surface of AP1000 nuclear power plant containment shell middle cylinder bodies
When top view；
Fig. 8 is the close-up schematic view in F directions in Fig. 7.
Specific embodiment
It describes in detail below in conjunction with the accompanying drawings to the technical solution in the present invention.
With reference to shown in Fig. 1, deformation detecting method using the present invention, to the bottom (head) 1 in AP1000 nuclear power plant containment shells
Carry out surface deformation detection.Wherein, in AP1000, along 1 edge of bottom (head) to the direction of 1 lower curtate of bottom (head), bottom (head) 1 it is whole
Five arc segments that a unilateral camber line includes successively are respectively：Arc segment H1, arc length are about 3.65 meters, and radius of curvature is about 6.95
Rice；Arc segment H2, arc length are about 5.88 meters, and radius of curvature is about 12.13 meters；Arc segment H3, arc length are about 8.58 meters, curvature half
Footpath is about 23.90 meters；Arc segment H4, arc length are about 3.44 meters, and radius of curvature is about 31.90 meters；Arc segment H5, arc length are about
3.45 meters, radius of curvature is about 34.05 meters.Also, arc segment H1 and arc segment H2 is simultaneously on No.1 curved plate 11.
Next, to detect the surface deformation in region corresponding to the arc segment H1 in bottom (head) 1 on No.1 curved plate 11
Exemplified by amount, the solution of the present invention is specifically introduced, specific method is：
The first step sets datum line.With reference to shown in Fig. 2, according to the arc length size of 11 mean camber line section H1 of No.1 curved plate
And radius of curvature dimensions, corresponding datum line is set in detection plate 2.Wherein, the datum line in detection plate 2 is divided into detecting
The datum line J1 of 1 inner surface of the bottom (head) and datum line J1 ' for detecting 1 outer surface of bottom (head).In the present invention, according to underseal
Placement state during first 1 splicing carries out the inner surface of bottom (head) 1 using datum line J1 the detection of surface deformation amount.
Detection plate 2 includes arc panel 21, supporting leg 22 and mounting base 23.Datum line J1 and J1 ' are located on arc panel 21.Peace
Dress seat 23 is located at two ends of arc panel 21, and is bolted to connection.Supporting leg 22 is flexibly connected with mounting base 23, and edge
The radius of curvature direction of datum line J1 and J1 ' freely can stretch and fix.Wherein, in the present invention, the length that supporting leg 22 stretches out
It spends for the distance between 22 external part of supporting leg and datum line, and is connected through a screw thread between supporting leg 22 and mounting base 23, so as to
The extension elongation of supporting leg 22 is adjusted flexibly.
With reference to shown in Fig. 2, Fig. 3 and Fig. 4, concretely comprising the following steps for datum line J1 and J1 ' is set according to arc segment H1：
Step S1 in AutoCAD softwares, draws the camber line of an arc length identical with arc segment H1 and same curvature radius
Section L1, wherein the two of arc segment L1 endpoint are respectively set to A points and B points.
Step S2 in AutoCAD softwares, first, connects A points and B points by straight line section, forms arc segment L1's
Corresponding chord length L2.Then, the direction of B points is directed toward along A points, chord length L2 is subjected to n deciles, each section of length is a.Then, with
M-th of Along ent of distance A points is starting point, makees perpendicular to chord length L2 and terminates in the straightway L3 of arc segment L1, and measurement is corresponding
The length value of straightway L3 is bm, wherein m chooses the integer value between 1~n successively；Finally, record when m is different numerical value and correspond to
Two-dimensional coordinate point (a*m, bm).Wherein, in the present invention, the length of the corresponding chord length L2 of arc segment L1 is about 3.60 meters, this
Chord length L2 is carried out 20 deciles by sample, and n values are that 20, a values are 0.18 meter, 1≤m≤20.
Step S3 on arc panel 21, first, chooses C points and D points, the length of straigh line between wherein C points and D points with
The equal length of chord length L2.Then, the plane where 21 upper surface of arc panel establishes two-dimensional Cartesian coordinate system using C points as origin,
It is x-axis wherein along C points to the direction of D points, is y-axis perpendicular to x-axis.In the rectangular coordinate system determine coordinate points (a*m,
bm), and portray in the upper surface of arc panel 21, wherein 1≤m≤20.Then, adjacent coordinate points are sequentially connected by straightway
(a*m,bm), form datum line J1 '.Finally, in the upper surface of arc panel 21, along the y-axis direction to datum line J1 ' into row distance d
Translation, form datum line J1, the size of distance d is less than the width of arc panel 21.
Wherein, into when the setting of line reference J1 and J1 ', first by the supporting leg 22 on arc panel 21 and mounting base 23 into
Row is removed, and ensures the upper surface of arc panel 21 and does not have boss obstacle, so as to avoid generating interference shadow to portraying datum line J1 and J1 '
It rings.
Second step carries out the region corresponding to arc segment H1 on No.1 curved plate 11 in bottom (head) 1 by detection plate 2
The data acquisition of surface deformation amount.Wherein, by largely being tested at the construction field (site) and the analysis of mass data being sent out
Existing, the surface deformation of bottom (head) 1 is mainly the angular deformation of caused curved plate when carrying out longitudinal measure.Therefore to bottom (head) 1
Surface carry out deformation quantity data acquisition when, mainly to longitudinal seam both sides occur angular deformation maximum region progress specific aim
Data acquisition, so as to greatly improve detection efficiency.
With reference to shown in Fig. 5 and Fig. 6, first, two supporting legs 22 in detection plate 2 are adjusted to identical extension elongation, and are led to
Supporting leg 22 is crossed to be located at detection plate on the surface of No.1 curved plate 11 for 2, it is corresponding with the position of arc segment H1.Wherein, examine
Drafting board 2 and the longitudinal seam 12 on the side of No.1 curved plate 11 are arranged in parallel, and 12 distance 3 of detection plate 2 and longitudinal seam~
5mm ensures that supporting leg 22 avoids weld seam, and is contacted with the surface-stable of No.1 curved plate 11, so as to ensure the essence of data acquisition
Parasexuality.Then, ruler 3 is developed and be placed on the surface of arc panel 21, along extending radially out to No.1 arc-shaped steel for datum line J1
Then the surface of plate 11 is translated along the whole length direction of datum line J1, the table of searching, measurement and record No.1 curved plate 11
Maximum range value and lowest distance value between face and datum line J1.
In the present invention, by the way that two supporting legs 22 in detection plate 2 are set as equal length, and will be examined by supporting leg 22
Drafting board 2 is located on the surface of No.1 curved plate 11, makes to leave gap between detection plate 2 and No.1 curved plate 11.So
Both it can ensure the theoretical camber line keeping parallelism of datum line J1 and curved plate 11 on arc panel 21, curved plate can also be avoided
Impurity on 11 surfaces is contacted with arc panel 21, and datum line J1 is made to shift and generates interference to the acquisition of data, so as to
Ensure the accuracy to 11 surface deformation amount data acquisition of curved plate.
Further, since weld seam causes the deformation quantity of both sides arc panel to be identical under normal circumstances.Therefore, to by longitudinal direction
When surface deformation amount is detected caused by weld seam 12, can data acquisition only be carried out to the single side regions of longitudinal seam 12.This
Sample can improve the speed of data acquisition, heighten operating efficiency.And before data acquisition is carried out, to arc segment H1 regions
Interior all longitudinal seams are numbered clockwise, and carry out acquisition and the record of data successively along the number order, in order to
Subsequently need to realize quick positioning during repetition measurement.
3rd step handles the data collected.The data collected are subtracted to the extension elongation of supporting leg 22, are obtained
Data that treated, should treated data are 11 mean camber line section H1 corresponding regions of No.1 curved plate deformation quantity；Wherein,
If treated, data value is positive value, and the depressed deformation of 1 inner surface of opposite bottom (head) occurs for the corresponding position of the data；Such as
Fruit treated data value is negative value, then the bulging deformation of 1 inner surface of opposite bottom (head) occurs for the corresponding position of the data.This
Outside, if the data of record can carry out repetition measurement by the number of well in advance, carry out data again there are larger deviation
Acquisition and processing.
At this point, detection method using the present invention is just completed to arc segment H1 on No.1 curved plate 11 in bottom (head) 1
The surface deformation detection that corresponding region carries out.Next, above-mentioned detection method using the present invention is to other camber lines in bottom (head) 1
Region corresponding to section carries out surface deformation detection, until completing the shape changing detection to 1 whole surface of bottom (head).Further, since
Cover head is identical with the structure of bottom (head) in AP1000 nuclear power plant containment shells, can be complete using the method for detection bottom (head) deformation
The shape changing detection of paired cover head, is not repeated to introduce herein.
With reference to shown in Fig. 7 and Fig. 8, deformation detecting method using the present invention is to the cylinder in AP1000 nuclear power plant containment shells
4 progress surface deformation detections methods be：
The first step, using the method identical with 1 datum line of bottom (head) in setting AP1000 nuclear power plant containment shells, to AP1000
Cylinder 4 in nuclear power plant containment shell is into the setting of line reference.Simply in the containment of AP1000 nuclear power stations, cylinder 4 be by
A kind of curved plate 41 of curvature value is spliced, therefore only needs to make a kind of detection plate 2 ' of size.Wherein, according to
The arc length of datum line in detection plate 2 ' can be arranged to the half of 41 arc length of curved plate by the demand of Site Detection.So exist
When carrying out the detection of surface deformation amount to the curved plate 41 for being located at same level height in cylinder 4, by by base in detection plate 2 '
The end to end setting of directrix can carry out surface deformation detection to a whole circle of curved plate 41.
Second step carries out cylinder 4 by detection plate 2 ' data acquisition of surface deformation amount.Since cylinder 4 is by being located at
Four circle curved plates 41 of different height form, therefore by detection plate 2 ' from top to bottom successively to the arc of each circle in cylinder 4
Shape steel plate 41 carries out the data acquisition of surface deformation amount.Wherein, the data acquiring location of cylinder 4 is included：First position Q1, with
Circumferential welded seam 42 is parallel and apart from the position of 42 3~5mm of distance of circumferential welded seam, causes both sides by circumferential welded seam 42 for gathering
The maximum angular deflection of curved plate 41；Second position Q2, it is parallel with circumferential welded seam 42, positioned at 41 short transverse of curved plate
Centre position causes 41 maximum in the horizontal direction of curved plate for gathering due to 41 both ends longitudinal seam 43 of curved plate
Line deflection；The third place Q3, the both sides horizontal level of longitudinal seam 43 cause both sides phase for gathering by longitudinal seam 43
The maximum angular deflection of adjacent curved plate 41；4th position Q4, in cylinder 4 topmost and curved plate 41 is enclosed freely in bottom two
The free end edge of the two circle curved plates 41 welded respectively with bottom (head) and cover head in the horizontal level at end, i.e. cylinder 4
The horizontal level of circumferencial direction, for gathering the deformation quantity of 41 free end of curved plate.
Since circumferential welded seam 42 causes the angular deformation amount of both sides curved plate 41 identical, say first in cylinder 4
When the deformation quantity of the band of position carries out data acquisition, can data acquisition only be carried out to the single side regions of circumferential welded seam 42.
And before carrying out the data acquisition of surface deformation amount to the curved plate 41 of each circle, along clockwise direction to all curved plates
41 are numbered, and order by number carries out acquisition and the record of data successively, in order to can quickly determine during follow-up repetition measurement
Position.
3rd step handles all data collected.The data collected are subtracted to the extension elongation of supporting leg 22,
Obtain treated data.Treated the data are the deformation quantity of corresponding test position curved plate 41；Wherein, if place
Data value after reason is positive value, then the depressed deformation of 4 inner surface inner surface of opposite cylinder occurs for the corresponding position of the data；If
Treated, and data value is negative value, then the bulging deformation of 4 inner surface of opposite cylinder occurs for the corresponding position of the data.
On the whole, the inspection of surface deformation amount is carried out to the end socket and cylinder of AP1000 nuclear power plant containment shells using the present invention
It is similar to look into specific steps, the main distinction is：In the present invention, according to end socket with the structure difference of cylinder and since composition seals
Head is different with the curved plate of cylinder, and the deformation occurred in splicing is different, therefore to shape occurs in end socket and cylinder
The band of position for becoming maximum has carried out targetedly data acquisition, so as to quickly detect containment surface in a short time most
Large deformation amount improves detection efficiency, shortens construction period.
In addition, in the bottom (head) 1 for AP1000 nuclear power plant containment shells different arc segments into line reference setting when,
The arc length of arc panel 21 in detection plate 2 can be dimensioned to unified fixed value, and the fixed value is about entire bottom (head) 1
About 5 meters of the camber line length of the 1/5 of arc length, i.e. arc panel 21.So by the size of unified detection plate 2, arc is not only convenient for
The processing of shape plate 21；It, can be very by using 5 meters of long detection plates that aluminum alloy material is processed and when carrying out data acquisition
The convenient fast operating for realizing one group of three people, two of which personnel are detected the fixation of plate 2, and a personnel carry out data
Acquisition and record, so as to improve the efficiency to the detection of 1 surface deformation amount of bottom (head).
With reference to shown in Fig. 1 and Fig. 2, five arc length is used to be configured for 5 meters of arc panel 21 to the datum line of bottom (head) 1
When, along the top edge of bottom (head) 1 to the direction of bottom, arc segment H1, arc segment H2, arc segment H3, arc segment H4 are carried out successively
And arc segment H5 is portrayed.First, by the freedom of No.1 curved plate 11 in the initiating terminal of first arc panel and bottom (head) 1
End alignment；Then, the arc segment H1 on No.1 curved plate 11 is portrayed on the surface of first arc panel.Due to arc segment
The length of H1 is about 3.65 meters, therefore after the portraying of arc segment H1 is completed, be there remains on first arc panel about 1.35 meters long
Region.Next, in first arc panel in remaining region, continue to portray arc segment H2.Due to the length of arc segment H2
About 5.88 meters of degree, so portrays preceding 1.35 meters of long camber lines in arc segment H2 onto first arc panel, latter 4.53 meters long
Camber line portray into the front half section of second arc panel.And the initiating terminal of second arc panel and the end of first arc panel
Tail end aligns.And so on, most five sections of various sizes of arc segments on bottom (head) 1 at last are portrayed by end to end method
In the detection plate identical to five sizes.Wherein, in the circumferential welded seam between crossing over two pieces of curved plates, in detection plate 21
With the corresponding positions of circumferential welded seam, reserved 5mm gaps are carried out to datum line or extend the operation of 5mm camber lines, for skipping or
Compensate the occupied position of circumferential welded seam.It can so ensure to complete 1 surface deformation amount of bottom (head) using five same detection plates
Detection when, the arc segments of five sections of different curvatures can equally be completely covered.Wherein, reserved gap size or camber line is extended
Size can be adjusted according to the width of field welding.
Claims (9)
1. a kind of AP1000 nuclear power plant containment shells deformation detecting method, which is characterized in that the detection method comprises the following steps：
The first step sets datum line；According to the design curvature of detection curved plate to be measured, the camber line of suitable length is chosen as inspection
The datum line of curved plate is surveyed, the benchmark curvature of a curve is identical with the design curvature of curved plate to be detected；Wherein, the base
Directrix is portrayed in detection plate, and the detection plate includes arc panel, supporting leg and mounting base, and the datum line is portrayed described
On the surface of arc panel, the mounting base is located at two ends of the arc panel, and the supporting leg connects with the mounting base activity
It connects, and can freely stretch and fix along the radius of curvature direction of the datum line；
Second step, gathered data；First, the detection plate is supported on to the surface of curved plate to be detected by the supporting leg,
In the design radius of curvature of wherein described datum line and curved plate to be detected is generally aligned in the same plane；Then, measured by ruler
Maximum range value and lowest distance value between the surface of the datum line and curved plate to be detected, wherein the ruler develops
It is placed on the surface of the detection plate, and extending radially out to the surface of curved plate to be detected along the datum line；
3rd step, processing and analysis data；The data collected subtract to the extension elongation of supporting leg, the data that obtain that treated,
The deformation quantity of treated data the are curved plate to be detected；Wherein, if treated, data value is positive value, this is treated
Detect the depressed deformation that opposite check surface occurs for arc panel；If treated data value is negative value, the arc panel to be detected
The bulging deformation of opposite detection faces occurs.
2. AP1000 nuclear power plant containment shells deformation detecting method according to claim 1, which is characterized in that the datum line
The step portrayed in the detection plate is：
Step S1 in AutoCAD softwares, according to the design curvature of detection curved plate to be measured, draws out one section and is set with described
The identical camber line of curvature is counted, and selection A points and B points, the arc segment between the A points and B points are on the camber line
The datum line, the A points and B points are two endpoints of the datum line；
Step S2 in AutoCAD softwares, connects the A points and B points by straightway, forms the string of the datum line
Long line；The direction of B points is directed toward along A points, n deciles are carried out to the chord length line of the datum line, are a per segment length；With distance A points
M-th of Along ent is starting point, makees perpendicular to the chord length line and terminates in the straightway of the datum line, measures the straightway
Length is bmValue, wherein 1≤m≤n；Record coordinate points (a*m, the b when m is different numerical valuem)；
Step S3 on the arc panel, chooses C points and D points, wherein the length of straigh line between C points and D points with
Length of straigh line between the A points and B points is equal；In the plane where the arc plate surface, using C points as origin
Rectangular coordinate system is established, is y-axis perpendicular to x-axis wherein being x-axis along C points to the direction of D points；In the rectangular coordinate system really
Position fixing point (a*m, bm) and portray on the surface of the arc panel, wherein 1≤m≤n；It is sequentially connected by straightway adjacent
Coordinate points (a*m, bm)。
3. AP1000 nuclear power plant containment shells deformation detecting method according to claim 1 or 2, which is characterized in that specific pin
Deformation quantity detecting step to bottom (head) in the containment or cover head is：
Step T1 according to the different curvature value of different zones in the bottom (head) or cover head, sets multiple corresponding benchmark
Line；Wherein, each datum line corresponds to an individual detection plate, and the arc length of each datum line and the arc length of corresponding region
It is equal；
Step T2 carries out the curved plate for being located at the same area the data acquisition of deformation quantity successively；First, select with it is to be detected
The corresponding detection plate in region, adjusts the extension elongation of two supporting legs in the detection plate, and by the supporting leg by the inspection
Drafting board is supported on the surface of a curved plate in region to be detected；Wherein, the extension elongation of two supporting legs is equal, and installs
On the surface of same curved plate to be detected；The detection plate is parallel with the longitudinal seam on curved plate to be detected to be set
It puts, and is 3~5mm with the distance between the longitudinal seam；Secondly, the datum line and the arc to be detected are measured by ruler
Maximum range value and lowest distance value between shape surface of steel plate；Wherein, the ruler develops the table for being placed on the detection plate
Face, and extending radially out to the surface of curved plate to be detected along the datum line；Then, the mobile detection plate is to be detected to this
In region on the surface of other curved plates, the data of deformation quantity are carried out to the curved plate surface near next longitudinal seam
Acquisition, is sequentially completed the data acquisition to the surface deformation amount of curved plate near all longitudinal seams in the region to be detected；
Step T3 using the method identical with the step T2, completes other regions in the bottom (head) or cover head
The data acquisition of curved plate deformation quantity, and all data are recorded respectively；
The corresponding leg length is individually subtracted in the data value of record by step T4, the data that obtain that treated；The processing
Data afterwards are the deformation quantity of curved plate to be detected；Wherein, if treated data value is positive value, the arc to be detected
Inward deflection occurs for shape plate；If treated, data value is negative value, which occurs evagination deformation.
4. AP1000 nuclear power plant containment shells deformation detecting method according to claim 3, which is characterized in that the safety
When bottom (head) or cover head carry out the data acquisition of deformation quantity in shell, with a circle water at most edge in the bottom (head) or cover head
Initiation region of the flat region as deformation quantity data acquisition, and from coil to coil carries out data acquisition until bottom or the institute of the bottom (head)
State the top of cover head；Wherein all longitudinal seams in each region are numbered clockwise, in order to follow-up repetition measurement.
5. AP1000 nuclear power plant containment shells deformation detecting method according to claim 1, which is characterized in that specific to institute
The deformation quantity detecting step for stating containment middle cylinder body is：
Step Y1 according to the curvature value of curved plate in the cylinder, sets corresponding datum line；Wherein, the datum line
Arc length be less than the cylinder in single curved plate arc length；
Step Y2 carries out the curved plate in the cylinder data acquisition of deformation quantity successively；First, the detection plate is adjusted
The extension elongation of upper two supporting legs, the extension elongation of two of which supporting leg is equal, and branch is located at the surface of curved plate to be detected
On；Then, the position of data acquisition and record, wherein data acquisition is carried out to the deformation quantity of each curved plate in the cylinder
Put including：First position, it is parallel with the circumferential welded seam of curved plate to be detected, and apart from the position of 3~5mm of circumferential welded seam；The
Two positions, it is parallel with the circumferential welded seam of curved plate to be detected, positioned at the centre position of curved plate short transverse to be detected；The
Three positions connect the both sides horizontal direction position of two neighboring curved plate longitudinal seam to be detected；4th position, the cylinder
In horizontal direction position on the inside of upper and lower two edges；
The corresponding leg length is individually subtracted in the data value of record by step Y3, the data that obtain that treated；The processing
Data afterwards are the deformation quantity of curved plate to be detected；Wherein, if treated data value is positive value, the arc to be detected
Inward deflection occurs for shape plate；If treated, data value is negative value, which occurs evagination deformation.
6. AP1000 nuclear power plant containment shells deformation detecting method according to claim 5, which is characterized in that the safety
When shell middle cylinder body carries out the data acquisition of deformation quantity, using a circle curved plate of uppermost edge in the cylinder as deformation quantity number
According to the starting circle of acquisition, then along the cylinder short transverse, from coil to coil adopts the data of curved plate progress deformation quantity from top to bottom
Collection, and each layer of data acquisition region is numbered clockwise, in order to follow-up repetition measurement.
7. AP1000 nuclear power plant containment shells deformation detecting method according to claim 3, which is characterized in that for detecting
The arc length size of arc panel in the detection plate of bottom (head) or cover head surface deformation amount is stated as fixed value, the fixed value is about described
The 1/5 of bottom (head) or the unilateral arc length of cover head.
8. AP1000 nuclear power plant containment shells deformation detecting method according to claim 7, which is characterized in that for the peace
In full shell the deformation quantity of bottom (head) or cover head into line reference setting when, first, arc panel in the first detection plate is risen
It aligns with the free end of the curved plate at most edge in the bottom (head) or cover head at beginning；Then, by the bottom (head) or top
Design camber line in end socket on the curved plate at most edge is portrayed on the arc panel；If the arc length of the arc panel is less than
Design arc length on the curved plate at the most edge then continues to portray the most side on the arc panel of the second detection plate
Camber line on the curved plate of edge；If the camber line that the arc length of the arc panel is more than on the curved plate at the most edge is long
Degree, then continue to portray the arc on the curved plate adjacent with the curved plate at the most edge on the arc panel of the first detection plate
Line, until the entire unilateral camber line of the bottom (head) or cover head is portrayed in the detection plate of multiple identical sizes.
9. AP1000 nuclear power plant containment shells deformation detecting method according to claim 8, which is characterized in that by the bottom
It is pre- in the corresponding position of circumferential welded seam when the entire unilateral camber line of end socket or the cover head is continuously portrayed in the detection plate
It stays the gap of 5mm or extends the camber line of 5mm.
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| CN107421586B (en) * | 2017-08-10 | 2021-05-18 | 中广核工程有限公司 | Nuclear power station containment vessel compression test strength monitoring system and monitoring method |
| CN107919176B (en) * | 2017-11-06 | 2020-08-11 | 中广核工程有限公司 | Automatic reading system and reading method for EAU system of nuclear power plant |
| CN108278012B (en) * | 2017-12-19 | 2020-09-29 | 中国核工业第五建设有限公司 | Method for mounting steel containment vessel accessory plate |
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| CN108267071A (en) | 2018-07-10 |
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