CN107093472A - The assemble method of steel containment vessel and its end socket in AP1000 nuclear power stations - Google Patents

The assemble method of steel containment vessel and its end socket in AP1000 nuclear power stations Download PDF

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Publication number
CN107093472A
CN107093472A CN201710304901.3A CN201710304901A CN107093472A CN 107093472 A CN107093472 A CN 107093472A CN 201710304901 A CN201710304901 A CN 201710304901A CN 107093472 A CN107093472 A CN 107093472A
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China
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head
socket
plate
shaping
measured
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CN107093472B (en
Inventor
王朝晖
郭强
居海兵
吴涛
祝增宝
尹付军
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China Nuclear Industry Fifth Construction Co Ltd
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China Nuclear Industry Fifth Construction Co Ltd
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    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C13/00Pressure vessels; Containment vessels; Containment in general
    • G21C13/02Details
    • G21C13/028Seals, e.g. for pressure vessels or containment vessels
    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21CNUCLEAR REACTORS
    • G21C13/00Pressure vessels; Containment vessels; Containment in general
    • G21C13/02Details
    • G21C13/06Sealing-plugs
    • G21C13/073Closures for reactor-vessels, e.g. rotatable
    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21DNUCLEAR POWER PLANT
    • G21D1/00Details of nuclear power plant
    • G21D1/02Arrangements of auxiliary equipment
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

Abstract

The present invention relates to Nuclear Power Station field.To realize the assembling of CV end sockets in AP1000 nuclear power stations, the assembly precision of CV end sockets in AP1000 nuclear power stations is met simultaneously, the present invention proposes a kind of assemble method of the end socket of steel containment vessel in AP1000 nuclear power stations, and the plane coordinate system X'O'Y' that plane coordinate system XOY and the CV bottom (head) of assembly platform is set up in assembling is carried out to the assembly platform of the CV bottom (head)s;46 control points are laid in assembling place, horizontal control network and level-control net is determined;Support block on assembly platform is adjusted;End socket is assembled, repeated measurement is adjusted in assembling process;Rear full weld is measured to the partial deviations in unformed CV bottom (head)s to be welded and fixed, and is monitored in welding process and is measured and carry out welding adjustment, until welding is completed, the shape shaping of CV bottom (head)s;The CV bottom (head) cylinders end diameter d and shape of shaping are measured, whether checking CV bottom (head)s meet design requirement.The deformation that the shape of end socket is produced by welding is this approach reduce, precision is high.

Description

The assemble method of steel containment vessel and its end socket in AP1000 nuclear power stations
Technical field
The present invention relates to steel containment vessel (CV) and its end socket in Nuclear Power Station field, more particularly to AP1000 nuclear power stations Assemble method.
Background technology
AP1000 nuclear power stations are the nuclear power stations using the passive type presurized water reactor of the third generation, at present, not yet there is the installation of maturation Construction technology.Steel containment vessel (CV) is the internal layer shielding construction of AP1000 nuclear power plant reactor factory buildings, is non-passive safety system One of visual plant in system.CV is by positioned at middle cylindrical tube and two ellipses positioned at cylindrical tube upper and lower ends The end socket composition of shape, wherein, the intended diameter of cylindrical tube is 39.624m, and design height is 65.633m.End socket is by interior Totally 64 end socket group plates being made of steel plate are constituted four outside circle group plate circles, and the end socket group plate on each circle group plate circle Curvature it is different, wherein, first lap group plate circle is that innermost circle group plate circle is made up of 2 blocks of semicircular end socket group plates, the second circle Group plate circle is made up of 6 blocks of end socket group plates, and the 3rd circle group plate circle is made up of 24 blocks of end socket group plates, and the 4th circle group plate circle is by 32 pieces of end sockets Group plate is constituted;Design interior diameter of the end socket in end socket port is 19.812m, by end socket port setting to end socket center Count height 11.43m.As can be seen here, the CV in AP1000 nuclear power stations has size big, the features such as hyperbolicity or multi-curvature.In addition, Because AP1000 nuclear power stations require higher to the assembly precision of CV end sockets, therefore, will keep under strict control control CV end sockets in an assembling process Deflection in welding process.But, because AP1000 nuclear power technologies are newest nuclear power technologies at present, not yet have more into Ripe mounting technique, the method also without more ripe assembling CV end sockets.
The content of the invention
To realize the assembling of CV end sockets in AP1000 nuclear power stations, while meeting the assembling essence of CV end sockets in AP1000 nuclear power stations Degree, the present invention proposes a kind of assemble method of the end socket of steel containment vessel in AP1000 nuclear power stations, and the steel containment vessel includes CV cylinders and the CV cover heads and CV bottom (head)s installed in the CV cylinders two ends, the assemble method comprise the following steps:
Step S1, in assembling place, the assembly platform of the CV bottom (head)s is assembled, and the assembly platform bag Support steel structure and the support block being movably arranged on the support steel structure are included, and the assembling is set up according to design requirement and is put down The plane coordinate system X'O'Y', the origin O of the plane coordinate system XOY of the plane coordinate system XOY of platform and the CV bottom (head)s with The origin O' of the plane coordinate system X'O'Y' is overlapped, the X-direction of the plane coordinate system XOY and the plane coordinate system X' There are differential seat angle θ, and θ=5.625 °, Y direction and the plane of the plane coordinate system XOY between O'Y' X' directions There are differential seat angle β, and θ+β=180 ° between coordinate system X'O'Y' Y' directions;
Step S2,4-6 control point is laid in the assembling place, intervisibility two-by-two between any two control point, and Horizontal control network and level-control net are determined according to the control point;
Step S3, using total powerstation the support central point of the support block on the assembly platform is measured, and according to Measurement result and the theoretical shape of the CV bottom (head)s are adjusted to the support block, make the support block and the CV underseals The outer contour laminating of the theoretical shape of head;
Step S4, set up total powerstation in the assembling place, and utilize side of the horizontal control network to the total powerstation Demarcated to absolute altitude;
The CV bottom (head)s assemble to obtain the unformed CV bottom (head)s of shape, and it is every in the CV bottom (head)s The group plate circle of one circle is carried out in assembling process,
First, the starting in described group of plate circle is installed in the X' directions using the plane coordinate system X'O'Y' as prime direction End socket group plate, when the starting end socket group plate is attached to approximate location, using the total powerstation to the starting end socket group plate Center line measure, according to measurement data calculate it is described starting end socket group plate center line correspondence in the plane coordinates It is the corresponding center line l in X'O'Y'1, and to correspondence center line l1Center line with the starting end socket group plate is corresponding in institute State the theory correspondence center line l in plane coordinate system X'O'Y'1' be compared, as the correspondence center line l1It is right with the theory Answer center line l1' it is misaligned when, the starting end socket group plate is adjusted, until the correspondence center line l1With the theory Correspondence center line l1' overlap;
Then, Middle head group plate follow-up in described group of plate circle is installed, and to the Middle head group plate Center line is measured, and the center line correspondence of the Middle head group plate is calculated in the plane coordinate system X' according to measurement data Corresponding center line l in O'Y'In, and to correspondence center line lInIt is corresponding with the center line of the Middle head group plate to be put down described Theory correspondence center line l in areal coordinate system X'O'Y'In' be compared, when the two is misaligned, to the Middle head group plate It is adjusted, until the two is overlapped, and the Middle head group plate is welded and fixed by spot welding method;
Then, before mounting and adjusting end socket group plate, the envelope of the adjustment end socket group plate both sides is located in described group of plate circle Go out several adjustment measurement points along the radial arc wire tag of the CV bottom (head)s on head group plate, the adjustment measurement point is close to described End socket group plate towards the adjustment head plate abutting edge, and on same radial direction camber line, any two adjustment measurement point with Spacing between the abutting edge is equal, arc length c≤2m of the radial direction segmental arc between two adjustment measurement points of arbitrary neighborhood, Go out the three-dimensional coordinate of the adjustment measurement point using total station survey, calculate the size of the adjustment end socket group plate;According to meter The size of the adjustment end socket group plate drawn is processed to the adjustment end socket group plate, is adjusted after machining to described Rectification campaign head group plate is installed and fixed by spot welding;
Finally, the upper port radius r and levelness of described group of plate circle are measured using total powerstation, and records measurement and obtained Upper port radius r and levelness value;
Step S5, before the CV bottom (head)s are completed and carry out full weld welding, using total powerstation or model to shape Partial deviations in unformed CV bottom (head)s are measured, and the arc length of the model is more than or equal to 4776mm;In measurement After the completion of, in the CV bottom (head)s end socket group plate carry out full weld be welded and fixed, and in full weld welding process utilize whole station Instrument or model are monitored measurement to the shape of the CV bottom (head)s, and are entered according to the situation of change of the shape of the CV bottom (head)s Row welding adjustment, until welding is completed, the shape shaping of the CV bottom (head)s;
Step S6, total powerstation is erected on the inner surface center of the CV bottom (head)s of the shaping, measured in vertical side The inner surface central point 11430mm of the upward CV bottom (head)s apart from shaping cylinder end diameter d;Utilize total powerstation or model Shape to the CV bottom (head)s of shaping is measured, and verifies whether the CV bottom (head)s of the shaping meet design requirement, if described The CV bottom (head)s of shaping meet design requirement, then the CV bottom (head)s are completed;
Similarly, the CV cover heads are assembled using the above method.
When being assembled using the assemble method to the end socket of steel containment vessel in AP1000 nuclear power stations, by flat to assembling The support central point of support block on platform measures adjustment, improves the assembly precision of assembly platform;Enter to end socket group plate During row is assembled, by the measurement of the center line to end socket group plate, the accuracy of the installation site of end socket group plate is determined, and The installation site of end socket group plate is adjusted according to the accuracy, so as to improve the installation accuracy of end socket group plate, and then improved The assembly precision of end socket.Before end socket full weld welding fabrication, the partial deviations in the end socket unformed to shape are measured, can It is adjusted according to the partial deviations amount welding parameters that measurement is learnt, to reduce deviation.In full weld welding process, to end socket Shape be monitored measurement, so as to according to monitoring measurement result welding parameters be adjusted, reduce end socket shape because The deformation produced is welded, the assembly precision of end socket is improved.After the completion of full weld, the shape to the end socket of shaping is measured, with Whether the end socket of checking shaping meets design requirement, in order to avoid when being assembled to steel containment vessel, because end socket does not meet design It is required that and cause the assembling of steel containment vessel to be done over again, or even the assembling of steel containment vessel can not be completed.
Preferably, in the step S3, the support block is cuboid block, and the support center of the support block is clicked through During row measurement, diagonal is first drawn on the top surface of the support block, and cornerwise intersection point is the support of the support block Central point.So, the measurement accuracy at the support midpoint of support block can be improved, and then the assembly precision of assembly platform can be improved.
Preferably, in the step S4, when being measured to the upper port radius r of described group of plate circle, to described group of plate circle In each block of end socket group plate midpoint suitable for reading and two end points measure.So, by same end socket group plate not The upper port radius r to obtain group plate circle at the end socket group plate is measured with point, can improve the upper port radius r's that measurement is obtained Precision, and then the assembly precision of end socket can be improved.
Preferably, in the step S4, the three-dimensional coordinate for measuring the adjustment measurement point drawn is input to drawing In software, the size of the adjustment end socket group plate is drawn.So, assembler directly can pass through mapping software according to measurement data Know the size of adjustment end socket group plate, it is easy to operate, and the dimensional accuracy of the adjustment end socket group plate obtained is high.
Preferably, in the step S5, entered using the partial deviations in the total powerstation CV bottom (head)s unformed to shape During row measurement, the total powerstation is erected on the inner surface center of the CV bottom (head)s, and in the inner surface of the CV bottom (head)s Upper several equally distributed measurement points of setting.
Preferably, in the step S6, when being measured using total powerstation to the cylinder end diameter d, first with institute The diameter measurement point M points that total powerstation is pointed on the inner surface of the CV bottom (head)s of the shaping are stated to measure, and the M points are perpendicular When the upward absolute altitude of Nogata is 11430mm ± 1mm, the angle [alpha] of M points is recordedMWith radius rM;Then by the total powerstation along level Direction rotates 180 degree, and the absolute altitude of the total powerstation corresponding diameter measurement point is measured, when the diameter measurement point When absolute altitude is 11430mm ± 1mm, the diameter measurement point is designated as N points, and record the angle [alpha] of N pointsNWith radius rN, and work as αMWith αNAccording to being respectively less than or during equal to 5 °, rM+rN=d.So, the measurement accuracy of the cylinder end diameter of end socket can be improved.
Preferably, in the CV bottom (head)s, 1 diameter measurement points are provided with each end socket group plate.
The present invention also proposes a kind of assemble method of steel containment vessel in AP1000 nuclear power stations, is utilizing any of the above-described kind In AP1000 nuclear power stations the assemble method of the end socket of steel containment vessel is by after the end socket assembled formation, in the CV end sockets of shaping The center of inner surface sets cross reflector plate, and the end socket is installed into place, using total powerstation to described cross anti- Penetrate piece to measure, obtain the coordinate at the center of the cross reflector plate, and calculate the center of the end socket Coordinate;
Several contour measurement points are arranged in the inner circle of the upper port of the CV end sockets of the shaping, and utilize total powerstation pair The absolute altitude of the contour measurement point is measured, and draws the installation level of the CV end sockets of the shaping;
Unwrapping wire and the branch at least eight and nuclear island is marked on the flange of the prop of the CV bottom (head)s of the shaping The corresponding installation anchor point of location point on post platform;It is installed in the CV bottom (head)s of the shaping on the leg platform Afterwards, and when the coincidence of installation anchor point location point corresponding with position, the installation site of the CV bottom (head)s of the shaping Accurately;When corresponding with the position location point of the installation anchor point it is misaligned when, the installation position of the CV bottom (head)s of the shaping Put and there is deviation, the installation site to the CV bottom (head)s of the shaping is adjusted, until the peace of the CV bottom (head)s of the shaping Holding position is accurate;
CV cylinders are installed on the CV bottom (head)s, and by being welded to connect;The CV cover heads of shaping are installed to institute The top of CV cylinders is stated, and by being welded to connect, steel containment vessel has been assembled.
Steel containment vessel is assembled using the assemble method of steel containment vessel in this kind of AP1000 nuclear power station, by right The installation level and installation site of end socket are measured, and the installation site of end socket is adjusted according to measurement result, can Ensure the installation accuracy of end socket, and then improve the assembly precision of steel containment vessel.
Preferably, the contour measurement point position is on the inner surface of the CV end sockets of the shaping and apart from the CV of the shaping The distance of the port of end socket is S, and 0<S≤200mm.This way it is possible to avoid the position of contour measurement point, which is laid, there is error And cause the installation level of end socket to measure inaccurate.
Preferably, the quantity of the contour measurement point is 8, and is evenly distributed on same circumference, to improve end socket Installation level measurement accuracy.
Brief description of the drawings
Fig. 1 be AP1000 nuclear power stations of the present invention in steel containment vessel end socket assemble method in set up assembly platform put down The schematic diagram of the plane coordinate system of areal coordinate system and CV bottom (head)s;
Fig. 2 be the inventive method in adjust end socket group plate size measure when adjustment measurement point laying illustrate Figure;
Fig. 3 is measures using model to the shape of end socket in the inventive method when, model is on end socket inner surface Layout diagram.
Embodiment
Below, with reference to Fig. 1-3, the assemble method of AP1000 steel containment vessel of nuclear power station of the present invention and its end socket is carried out in detail Describe in detail bright.
Because steel containment vessel is made up of CV cylinders, CV cover heads and CV bottom (head)s, wherein, CV cover heads are arranged on CV The top of body, CV bottom (head)s are arranged on the low side of CV cylinders, and the shape and size of CV cover heads and CV bottom (head)s are extremely approximate, Therefore by taking CV bottom (head)s as an example, the assembling process of steel containment vessel and its end socket in AP1000 nuclear power stations is described in detail.Its In, to comprising the following steps that the CV bottom (head)s of steel containment vessel in AP1000 nuclear power stations are assembled:
Step S1, the plane coordinates for assembling assembly platform and setting up plane coordinate system XOY and the CV bottom (head) of assembly platform It is X'O'Y'.
First, in assembling place, the assembly platform for assembling CV bottom (head)s is assembled, the assembly platform includes branch Support steel construction and the support block being movably arranged on support steel construction, in an assembling process, can be adjusted to support block as needed It is whole, the assembly precision of assembly platform is improved, and then improve the assembly precision of CV bottom (head)s.Preferably, support block is cuboid block, Make simple and convenient.
Then, as shown in figure 1, according to design requirement assembling place in set up assembly platform plane coordinate system XOY and The plane coordinate system X'O'Y' of CV bottom (head)s, and plane coordinate system XOY origin O and plane coordinate system X'O'Y' origin O' weights Close, there is differential seat angle θ between plane coordinate system XOY X-direction and plane coordinate system X'O'Y' X' directions, and θ= 5.625°;There is differential seat angle β, and θ+β between plane coordinate system XOY Y direction and plane coordinate system X'O'Y' Y' directions =180 °.
Step S2, in assembling place 4-6 control point is laid, intervisibility two-by-two between any two control point, and according to The control point determines horizontal control network and level-control net.It is of course also possible to adjust the quantity at control point as needed and set Seated position.
Step S3, using total powerstation the support central point of the support block on assembly platform is measured, and according to measurement As a result the theoretical shape with CV bottom (head)s is adjusted to support block, makes the outline of support block and the theoretical shape of CV bottom (head)s Line is fitted.Preferably due to which support block is cuboid block, when the support central point to support block is measured, first in support Diagonal is drawn on the top surface of block, cornerwise intersection point is the support central point of support block, measure simple and convenient, and measurement accuracy Height, and support block is adjusted according to the measurement result of support central point, the assembly precision of assembly platform can be improved.
Step S4, in assembling place set up total powerstation, and direction and absolute altitude using horizontal control network to the total powerstation Demarcated;
CV bottom (head)s assemble to obtain the unformed CV bottom (head)s of shape.Because CV bottom (head)s are by four circle group plates Enclose what is constituted, and first lap group plate circle is docked for semicircular arc end socket group plate by two pieces of plane projections and formed, the second circle group Plate circle is to be docked to be formed for fan-shaped arc end socket group plate by 6 pieces of plane projections, and the 3rd circle group plate circle is by 24 pieces of plane projections Dock to be formed for fan-shaped arc end socket group plate, the 4th circle group plate circle is the arc end socket group plate for sector by 32 pieces of plane projections Docking is formed, therefore, by taking the assembled process of the 4th circle group plate circle as an example, the assembling process of CV bottom (head)s is illustrated.
The starting end socket group in the 4th circle group plate circle 4 is installed as prime direction in X' directions using plane coordinate system X'O'Y' Plate 41.When end socket group plate 41 to be initiated is attached to approximate location and originates the origination side of head plate 41 and press close to X' directions, using complete Instrument of standing is measured to the center line for originating end socket group plate 41, and the center line of starting end socket group plate 41 is calculated according to measurement data Corresponding center line l of the correspondence in plane coordinate system X'O'Y'1, and to correspondence center line l1In starting end socket group plate 41 Theory correspondence center line l of the heart line correspondence in plane coordinate system X'O'Y'1' be compared, as correspondence center line l1It is right with theory Answer center line l1' it is misaligned when, starting end socket group plate 41 is adjusted, until correspondence center line l1Center line corresponding with theory l1' overlap.When the center line to originating end socket group plate 41 is measured, go out to originate the upper of end socket group plate 41 with total station survey The midpoint of mouth and the plane coordinates at the midpoint of lower mouth, you can the center line correspondence for calculating starting end socket group plate 41 is sat in plane Corresponding center line in mark system X'O'Y'.
Middle head group plate 42 follow-up in 4th circle group plate circle 4 is installed, and in Middle head group plate 42 Heart line is measured, and the center line correspondence of the Middle head group plate 42 is calculated in plane coordinate system X'O'Y' according to measurement data In corresponding center line lIn, and to correspondence center line lInIt is corresponding with the center line of Middle head group plate 42 in plane coordinate system X' Theory correspondence center line l in O'Y'In' be compared, when the two is misaligned, Middle head group plate 42 is adjusted, directly Overlap, and Middle head group plate 42 is welded and fixed to the two by spot welding method.In to Middle head group plate 42 When heart line is measured, specific measuring method is identical with the measuring method of the center line to originating head plate 41.
Because the 4th circle group plate circle 4 includes 32 blocks of end socket group plates, therefore, to ensure assembled the 4th circle group plate circle formed 4 precision, by the use of 1 or 2 block of end socket group plate as adjustment end socket group plate 43, and in assembly, is sealed according to the adjustment that assembly needs The size of head group plate 43 is processed adjustment.
Before mounting and adjusting end socket group plate 43, as shown in Fig. 2 being located at adjustment end socket group plate 43 in the 4th circle group plate circle 4 Remember on the Middle head group plate 42 of both sides along the radial direction camber line subscript of CV bottom (head)s and several adjustment measurement points 421, these tune Whole measurement point 421 close to Middle head group plate 42 towards adjustment head plate 43 abutting edge 422, and in same radial direction camber line On, any two adjustment measurement point 421 is equal with the spacing between abutting edge 422, two adjustment measurement points of arbitrary neighborhood Arc length c≤2m of radial direction segmental arc between 421.Radial direction camber line is referred in end socket inner surface and the center by end socket inner surface The arc intersection being crossed to form of point and the plane vertical with end socket port.Go out to adjust measurement point 421 using total station survey Three-dimensional coordinate, and the size for adjusting end socket group plate 43 is calculated according to the three-dimensional coordinate of these adjustment measurement points 421.Preferably, The three-dimensional coordinate for measuring the adjustment measurement point 421 drawn is input to the three-dimensional drawing softwares such as mapping software such as CAD, ProE In, you can the size of adjustment end socket group plate 43 is drawn, it is easy to operate, and the dimensional accuracy of the adjustment end socket group plate 43 obtained It is high.Adjustment end socket group plate 43 is processed according to the size of the adjustment end socket group plate 43 calculated, it is right after machining Adjustment public attention group plate 43 is installed and fixed by spot welding, so as to obtain the unformed CV bottom (head)s of shape.
So, during assembled formation group plate circle is carried out to end socket group plate, the center line to end socket group plate is passed through Measurement, determines the accuracy of the installation site of end socket group plate, and the installation site of end socket group plate is adjusted according to the accuracy It is whole, so as to improve the installation accuracy of end socket group plate, and then improve the assembly precision of bottom (head).
The upper port radius r and levelness of the 4th circle group plate circle 4 are measured using total powerstation, and record what measurement was obtained Upper port radius r and levelness value.Preferably, the midpoint and two suitable for reading to each block of end socket group plate in the 4th circle group plate circle is passed through Individual end points is measured, to obtain the upper port radius r of the 4th circle group plate circle 4, can improve the essence for the upper port radius r that measurement is obtained Degree, and then the assembly precision of end socket can be improved.
Step S5, measured using the shape of total powerstation or model the CV bottom (head) unformed to shape, draw this not Partial deviations in the CV bottom (head)s of shaping, welding parameter is adjusted in order to assemble workmen according to partial deviations amount, so that The partial deviations in CV bottom (head)s are adjusted by welding deformation, reduce deviation.As shown in figure 3, using model 5 to CV When partial deviations in bottom (head) are measured, the arc length of used model 5 is more than or equal to 4776mm.Utilize total powerstation pair When partial deviations in the unformed CV bottom (head)s of shape are measured, total powerstation is erected at the inner surface center of CV bottom (head)s On, and several equally distributed measurement points are set on the inner surface of CV bottom (head)s.After being measured, in CV bottom (head)s End socket group plate carry out full weld and be welded and fixed, in full weld welding process, utilize the shape of total powerstation or model to CV bottom (head)s Measurement is monitored, and welding parameter is adjusted according to the situation of change of the shape of CV bottom (head)s, the shape to CV bottom (head)s is carried out Welding adjustment, is completed until full weld is welded, the shape shaping of CV bottom (head)s.So, the shape of CV bottom (head)s can be reduced because of welding The deformation of generation, and then improve the assembly precision of bottom (head).
Step S6, total powerstation is erected on the inner surface center P of the CV bottom (head)s of shaping, measures the CV underseals of shaping The cylinder end diameter d of head, and the distance of cylinder end diameter d and point P in the vertical directions is 11430mm.Utilizing total powerstation When being measured to cylinder end diameter d, the diameter measurement on the inner surface of the CV bottom (head)s of shaping is pointed to first with total powerstation Point M points are measured, and the M point in the vertical directions absolute altitude be 11430mm ± 1mm when, record M points angle [alpha]MAnd radius rM;Then total powerstation is rotated into 180 degree in the horizontal direction, and the absolute altitude of total powerstation corresponding diameter measurement point is measured, When the absolute altitude of diameter measurement point is 11430mm ± 1mm, the diameter measurement point is designated as N points, and record the angle [alpha] of N pointsNWith Radius rN, and work as αMAnd αNAccording to being respectively less than or during equal to 5 °, rM+rN=d.So, the cylinder end diameter of CV bottom (head)s can be improved Measurement accuracy.Preferably, 1 diameter measurement points are provided with each end socket group plate, further to improve CV bottom (head)s The measurement accuracy of cylinder end diameter.
The shape of the CV bottom (head)s of shaping is measured using total powerstation or model, whether the CV bottom (head)s of checking shaping Meet design requirement, if the CV bottom (head)s of shaping meet design requirement, CV bottom (head)s are completed.So, only at CV bottoms When end socket meets design requirement, subsequent operation is just carried out, CV bottom (head)s are installed to the bottom of CV cylinders, in order to avoid pacify to steel When full shell is assembled, the assembling of steel containment vessel is caused to be done over again because end socket does not meet design requirement, or even steel can not be completed The assembling of containment processed.
Similarly, CV cover heads are assembled using the above method.
After CV cover heads and CV bottom (head)s is completed using the above method, by the CV cover heads and CV underseals of shaping Head moves in nuclear island the assembling for carrying out steel containment vessel, and detailed process is as follows:
First, cross reflector plate is set in the central spot of the inner surface of the CV bottom (head)s of shaping, and by CV bottom (head)s Install in place, cross reflector plate is measured using total powerstation, so as to obtain the coordinate at the center of cross reflector plate, entered And calculate the coordinate of CV bottom (head) inner surface central points.It is contour that several are laid in the inner circle of the upper port of CV bottom (head)s Measurement point, and the absolute altitude of these contour measurement points is measured using total powerstation, so as to calculate the installation of CV bottom (head)s Levelness.Preferably, contour measurement point position is on the inner surface of the CV bottom (head)s of shaping, apart from the port of the CV bottom (head)s of shaping The distance at place is S, and 0<S≤200mm.Occur error this way it is possible to avoid the position of contour measurement point is laid and cause end socket Installation level measurement it is inaccurate.Preferably, the quantity of contour measurement point is 8, and is evenly distributed on same circumference, With the measurement accuracy for the installation level for improving end socket.Similarly, using installation level of the above method to the CV cover heads of shaping Degree is measured.
Then, on the flange on the prop of the CV bottom (head)s of shaping unwrapping wire and mark positioned at 0 °, 45 °, 90 °, On 135 °, 180 °, 225 °, 270 ° and 315 ° of 8 installation anchor points, the leg platform that this 8 are installed in anchor point and nuclear island 8 location points position it is corresponding, on the leg platform that the CV bottom (head)s of shaping are installed in nuclear island after, when this 8 When installation anchor point is overlapped with 8 location points on the leg platform in nuclear island, the installation site of CV bottom (head)s is accurate;When this 8 When 8 location points on the individual leg platform installed in anchor point and nuclear island are misaligned, the installation site of CV bottom (head)s is present partially Difference, the installation site to CV bottom (head)s is adjusted, until the installation site of CV bottom (head)s is accurate.
Finally, CV cylinders are installed on CV bottom (head)s, and by being welded to connect;CV cover heads are installed on CV cylinders End, and by being welded to connect, so as to complete the assembling of steel containment vessel.
Steel containment vessel is assembled using the assemble method of steel containment vessel in this kind of AP1000 nuclear power station, by right The installation level and installation site of end socket are measured, and the installation site of end socket is adjusted according to measurement result, can Ensure the installation accuracy of end socket, and then improve the assembly precision of steel containment vessel.

Claims (10)

1. the assemble method of the end socket of steel containment vessel in a kind of AP1000 nuclear power stations, the steel containment vessel include CV cylinders with And CV cover heads and CV bottom (head)s installed in the CV cylinders two ends, it is characterised in that the assemble method comprises the following steps:
Step S1, assembling place in, the assembly platform of the CV bottom (head)s is assembled, and the assembly platform include prop up Support steel construction and the support block being movably arranged on the support steel structure, and the assembly platform is set up according to design requirement The plane coordinate system X'O'Y', the origin O of the plane coordinate system XOY of plane coordinate system XOY and the CV bottom (head)s with it is described Plane coordinate system X'O'Y' origin O' is overlapped, the X-direction of the plane coordinate system XOY and the plane coordinate system X'O'Y' X' directions between there are differential seat angle θ, and θ=5.625 °, Y direction and the plane coordinates of the plane coordinate system XOY There are differential seat angle β, and θ+β=180 ° between the Y' directions for being X'O'Y';
Step S2,4-6 control point is laid in the assembling place, intervisibility two-by-two between any two control point, and according to The control point determines horizontal control network and level-control net;
Step S3, using total powerstation the support central point of the support block on the assembly platform is measured, and according to measurement As a result the theoretical shape with the CV bottom (head)s is adjusted to the support block, makes the support block and the CV bottom (head)s The outer contour laminating of theoretical shape;
Step S4, set up total powerstation in the assembling place, and using the horizontal control network to the direction of the total powerstation and Absolute altitude is demarcated;
The CV bottom (head)s assemble to obtain the unformed CV bottom (head)s of shape, and each circle in the CV bottom (head)s Group plate circle carry out assembling process in,
First, the starting end socket in described group of plate circle is installed in the X' directions using the plane coordinate system X'O'Y' as prime direction Group plate, when the starting end socket group plate is attached to approximate location, using the total powerstation in the starting end socket group plate Heart line is measured, and the center line correspondence of the starting end socket group plate is calculated in the plane coordinate system X' according to measurement data Corresponding center line l in O'Y'1, and to correspondence center line l1It is corresponding with the center line of the starting end socket group plate to be put down described Theory correspondence center line l in areal coordinate system X'O'Y'1' be compared, as the correspondence center line l1In corresponding with the theory Heart line l1' it is misaligned when, the starting end socket group plate is adjusted, until the correspondence center line l1It is corresponding with the theory Center line l1' overlap;
Then, Middle head group plate follow-up in described group of plate circle is installed, and to the center of the Middle head group plate Line is measured, and the center line correspondence of the Middle head group plate is calculated in the plane coordinate system X'O'Y' according to measurement data In corresponding center line lIn, and to correspondence center line lInIt is corresponding with the center line of the Middle head group plate to be sat in the plane Theory correspondence center line l in mark system X'O'Y'In' be compared, when the two is misaligned, the Middle head group plate is carried out Adjustment, until the two is overlapped, and is welded and fixed by spot welding method to the Middle head group plate;
Then, before mounting and adjusting end socket group plate, the end socket group of the adjustment end socket group plate both sides is located in described group of plate circle Go out several adjustment measurement points along the radial arc wire tag of the CV bottom (head)s on plate, the adjustment measurement point is close to the end socket Group plate towards the adjustment head plate abutting edge, and on same radial direction camber line, any two adjust measurement point with it is described Spacing between abutting edge is equal, arc length c≤2m of the radial direction segmental arc between two adjustment measurement points of arbitrary neighborhood, utilizes Total station survey goes out the three-dimensional coordinate of the adjustment measurement point, calculates the size of the adjustment end socket group plate;According to calculating The size of the adjustment end socket group plate gone out is processed to the adjustment end socket group plate, to the adjustment wind after machining Head group plate is installed and fixed by spot welding;
Finally, the upper port radius r and levelness of described group of plate circle are measured using total powerstation, and record that measurement obtains it is upper Port radius r and levelness value;
Step S5, before the CV bottom (head)s are completed and carry out full weld welding, using total powerstation or model to shape not into Partial deviations in the CV bottom (head)s of type are measured, and the arc length of the model is more than or equal to 4776mm;It is being measured Afterwards, full weld is carried out to the end socket group plate in the CV bottom (head)s to be welded and fixed, and in full weld welding process using total powerstation or Model is monitored measurement to the shape of the CV bottom (head)s, and is welded according to the situation of change of the shape of the CV bottom (head)s Adjustment is connect, until welding is completed, the shape shaping of the CV bottom (head)s;
Step S6, total powerstation is erected on the inner surface center of the CV bottom (head)s of the shaping, measures in the vertical direction Apart from the inner surface central point 11430mm of the CV bottom (head)s of shaping cylinder end diameter d;Using total powerstation or model into The shape of the CV bottom (head)s of type is measured, and verifies whether the CV bottom (head)s of the shaping meet design requirement, if the shaping CV bottom (head)s meet design requirement, then the CV bottom (head)s are completed;
Similarly, the CV cover heads are assembled using the above method.
2. the assemble method of the end socket of steel containment vessel in AP1000 nuclear power stations according to claim 1, it is characterised in that In the step S3, the support block is cuboid block, when being measured to the support central point of the support block, first in institute State and diagonal is drawn on the top surface of support block, and cornerwise intersection point is the support central point of the support block.
3. the assemble method of the end socket of steel containment vessel, its feature in the AP1000 nuclear power stations according to right will require 1 or 2 It is, in the step S4, when being measured to the upper port radius r of described group of plate circle, to each piece in described group of plate circle The midpoint suitable for reading of end socket group plate and two end points are measured.
4. the assemble method of the end socket of steel containment vessel in AP1000 nuclear power stations according to claim 3, it is characterised in that In the step S4, the three-dimensional coordinate for measuring the adjustment measurement point drawn is input in mapping software, drawn described Adjust the size of end socket group plate.
5. the assemble method of the end socket of steel containment vessel in AP1000 nuclear power stations according to claim 4, it is characterised in that It is described full when being measured using the partial deviations in the total powerstation CV bottom (head)s unformed to shape in the step S5 Instrument of standing is erected on the inner surface center of the CV bottom (head)s, and sets several uniform on the inner surface of the CV bottom (head)s The measurement point of distribution.
6. the assemble method of the end socket of steel containment vessel in AP1000 nuclear power stations according to claim 5, it is characterised in that In the step S6, when being measured using total powerstation to the cylinder end diameter d, institute is pointed to first with the total powerstation Diameter measurement point M points on the inner surface for the CV bottom (head)s for stating shaping are measured, and the absolute altitude of the M point in the vertical directions is During 11430mm ± 1mm, the angle [alpha] of M points is recordedMWith radius rM;Then the total powerstation is rotated into 180 degree in the horizontal direction, and The absolute altitude of diameter measurement point corresponding to the total powerstation is measured, when the diameter measurement point absolute altitude for 11430mm ± During 1mm, the diameter measurement point is designated as N points, and record the angle [alpha] of N pointsNWith radius rN, and work as αMAnd αNAccording to be respectively less than or be equal to At 5 °, rM+rN=d.
7. the assemble method of the end socket of steel containment vessel in AP1000 nuclear power stations according to claim 6, it is characterised in that In the CV bottom (head)s, 1 diameter measurement points are provided with each end socket group plate.
8. a kind of assemble method of steel containment vessel in AP1000 nuclear power stations, its spy is, any in using claim 1-7 The assemble method of the end socket of steel containment vessel is being molded after the end socket assembled formation in AP1000 nuclear power stations described in one The centers of inner surface of CV end sockets cross reflector plate is set, and the end socket is installed in place, using total powerstation to institute State cross reflector plate to measure, obtain the coordinate at the center of the cross reflector plate, and calculate the end socket The coordinate of center;
Several contour measurement points are arranged in the inner circle of the upper port of the CV end sockets of the shaping, and using total powerstation to described The absolute altitude of contour measurement point is measured, and draws the installation level of the CV end sockets of the shaping;
Unwrapping wire and mark the pillar at least eight and nuclear island on the flange of the prop of the CV bottom (head)s of the shaping and put down The corresponding installation anchor point of location point on platform;After the CV bottom (head)s of the shaping are installed on the leg platform, and When the coincidence of installation anchor point location point corresponding with position, the installation site of the CV bottom (head)s of the shaping is accurate; When corresponding with the position location point of the installation anchor point it is misaligned when, the installation site presence of the CV bottom (head)s of the shaping Deviation, the installation site to the CV bottom (head)s of the shaping is adjusted, until the installation site of the CV bottom (head)s of the shaping Accurately;
CV cylinders are installed on the CV bottom (head)s, and by being welded to connect;The CV cover heads of shaping are installed to the CV The top of cylinder, and by being welded to connect, steel containment vessel has been assembled.
9. the assemble method of steel containment vessel in AP1000 nuclear power stations according to claim 8, it is characterised in that described etc. High measurement point is located on the inner surface of the CV end sockets of the shaping and the distance apart from the port of the CV end sockets of the shaping is S, and 0<S≤200mm.
10. the assemble method of steel containment vessel in AP1000 nuclear power stations according to claim 10, it is characterised in that described The quantity of contour measurement point is 8, and is evenly distributed on same circumference.
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