CN107093472B - The assemble method of steel containment vessel and its end socket in AP1000 nuclear power station - Google Patents

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

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Publication number
CN107093472B
CN107093472B CN201710304901.3A CN201710304901A CN107093472B CN 107093472 B CN107093472 B CN 107093472B CN 201710304901 A CN201710304901 A CN 201710304901A CN 107093472 B CN107093472 B CN 107093472B
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China
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head
end socket
cv
bottom
point
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CN201710304901.3A
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Chinese (zh)
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CN107093472A (en
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王朝晖
郭强
居海兵
吴涛
祝增宝
尹付军
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中国核工业第五建设有限公司
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    • 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
    • Y02E30/40Other aspects relating to nuclear fission

Abstract

The present invention relates to Nuclear Power Station fields.For the assembling for realizing CV end socket in AP1000 nuclear power station, meet the assembly precision of CV end socket in AP1000 nuclear power station simultaneously, the present invention proposes a kind of assemble method of the end socket of steel containment vessel in AP1000 nuclear power station, carries out the plane coordinate system X'O'Y' that plane coordinate system XOY and the CV bottom (head) of assembly platform is established in assembling to the assembly platform of the CV bottom (head);4-6 control point is laid in assembling place, determines horizontal control network and level-control net;Supporting block on assembly platform is adjusted;End socket is assembled, repeated measurement adjusts in assembling process;It is fully welded and is welded and fixed after being measured to the partial deviations in unformed CV bottom (head), be monitored in welding process and measure and carry out welding adjustment, until welding is completed, the shape molding of CV bottom (head);Molding CV bottom (head) cylinder end diameter d and shape are measured, whether verifying CV bottom (head) meets design requirement.This approach reduce the deformation that the shape of end socket is generated by welding, precision is high.

Description

The assemble method of steel containment vessel and its end socket in AP1000 nuclear power station

Technical field

The present invention relates to steel containment vessel (CV) and its end sockets in Nuclear Power Station field more particularly to AP1000 nuclear power station Assemble method.

Background technique

AP1000 nuclear power station is the nuclear power station using the passive type presurized water reactor of the third generation, currently, there has been no mature installations Construction technology.Steel containment vessel (CV) is the internal layer shielding construction of AP1000 nuclear power plant reactor workshop, is non-passive safety system One of important equipment in system.CV is by being located in the middle cylindrical tube and positioned at two ellipses of cylindrical tube upper and lower ends The end socket of shape forms, wherein the design diameter of cylindrical tube is 39.624m, design height 65.633m.End socket is by interior Four outside circle group plate circles totally 64 end socket group board groups made of steel plate at, and be located at each circle group plate circle on end socket group plate Curvature it is different, wherein first lap group plate circle, that is, innermost circle group plate circle is made of 2 blocks of semicircular end socket group plates, the second circle Group plate circle is made of 6 blocks of end socket group plates, and third circle group plate circle is made 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 at end socket port is 19.812m, by end socket port setting at end socket center Count height 11.43m.It can be seen that CV in AP1000 nuclear power station has size big, the features such as hyperbolicity or multi-curvature.In addition, Since assembly precision of the AP1000 nuclear power station to CV end socket is more demanding, it to keep under strict control control CV end socket in an assembling process Deflection in the welding process.But since AP1000 nuclear power technology is current newest nuclear power technology, there has been no more at Ripe mounting technique, also without the method for more mature assembling CV end socket.

Summary of the invention

To realize the assembling of CV end socket in AP1000 nuclear power station, while meeting the assembling essence of CV end socket in AP1000 nuclear power station Degree, the present invention propose that a kind of assemble method of the end socket of steel containment vessel in AP1000 nuclear power station, the steel containment vessel include CV cylinder and the CV cover head and CV bottom (head) for being mounted on CV cylinder both ends, the assemble method include the following steps:

Step S1, in assembling place, the assembly platform of the CV bottom (head) is assembled, and the assembly platform packet The supporting block for including support steel structure and being movably arranged on the support steel structure, and the assembling is established 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) 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 between the direction X' of O'Y', and θ=5.625 °, the Y direction and the plane of the plane coordinate system XOY There are differential seat angle β between the direction Y' of coordinate system X'O'Y', and+β=180 ° θ;

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, it is measured using support central point of the total station to the supporting block on the assembly platform, and according to Measurement result and the theoretical shape of the CV bottom (head) are adjusted the supporting block, make the supporting block and the CV underseal The outer contour fitting of the theoretical shape of head;

Step S4, total station is set up in the assembling place, and using the horizontal control network to the side of the total station It is demarcated to absolute altitude;

The CV bottom (head) is assembled to obtain the unformed CV bottom (head) of shape, and to every in the CV bottom (head) The group plate circle of one circle carries out in assembling process,

Firstly, installing the starting in described group of plate circle using the direction X' of the plane coordinate system X'O'Y' as prime direction End socket group plate, when the starting end socket group plate is installed to approximate location, using the total station to the starting end socket group plate Center line measure, the center line for calculating the starting end socket group plate according to measurement data is corresponding in the plane coordinates It is the correspondence center line l in X'O'Y'1, and to correspondence center line l1It is corresponding in institute with the starting center line of end socket group plate State the corresponding center line l of theory in plane coordinate system X'O'Y'1' be compared, as the corresponding center line l1It is right with the theory Answer center line l1' when not being overlapped, the starting end socket group plate is adjusted, until the corresponding center line l1With the theory Corresponding center line l1' be overlapped;

Then, subsequent Middle head group plate in described group of plate circle is installed, and to the Middle head group plate Center line measures, and the center line for calculating the Middle head group plate according to measurement data is corresponding in the plane coordinate system X' Correspondence 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 The corresponding center line l of theory in areal coordinate system X'O'Y'In' be compared, when the two is not overlapped, 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 two sides is located in described group of plate circle Radial arc wire tag on head group plate along the CV bottom (head) goes out several adjustment measurement points, and the adjustment measurement point is close to described End socket group plate towards the adjustment head plate abutting edge, and on same radial camber line, any two adjust measurement point with Spacing between the abutting edge is equal, arc length c≤2m of the radial segmental arc between two adjustment measurement points of arbitrary neighborhood, The three-dimensional coordinate for going out the adjustment measurement point using total station survey calculates the size of the adjustment end socket group plate;According to meter The size of the adjustment end socket group plate obtained processes the adjustment end socket group plate, after processing is completed to the tune Rectification campaign head group plate install and fixed by spot welding;

Finally, being measured using upper port radius r and levelness of the total station to described group of plate circle, and records measurement and obtain Upper port radius r and levelness value;

Step S5, before the CV bottom (head) is completed and carries out being fully welded welding, using total station or template to shape Partial deviations in unformed CV bottom (head) measure, and the arc length of the template is greater than or equal to 4776mm;It is measuring After the completion, the end socket group plate in the CV bottom (head) be fully welded being welded and fixed, and utilize whole station in being fully welded welding process Instrument or template are monitored measurement to the shape of the CV bottom (head), and according to the situation of change of the shape of the CV bottom (head) into Row welding adjustment, until welding is completed, the shape molding of the CV bottom (head);

Step S6, total station is erected on the inner surface center of the molding CV bottom (head), is measured in vertical side The cylinder end diameter d of inner surface central point 11430mm apart from the molding CV bottom (head) upwards;Utilize total station or template The shape of molding CV bottom (head) is measured, verifies whether the molding CV bottom (head) meets design requirement, if described Molding CV bottom (head) meets design requirement, then the CV bottom (head) is completed;

Similarly, the CV cover head is assembled using the above method.

When being assembled using end socket of the assemble method to steel containment vessel in AP1000 nuclear power station, by flat to assembling The support central point of supporting block on platform measures adjustment, improves the assembly precision of assembly platform;To end socket group plate into 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 It is adjusted according to installation site of the accuracy to end socket group plate, to improve the installation accuracy of end socket group plate, and then is improved The assembly precision of end socket.Before end socket is fully welded 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 being fully welded welding process, to end socket Shape be monitored measurement, so as to be adjusted according to monitoring measurement result welding parameters, reduce the shape of end socket because The deformation generated is welded, the assembly precision of end socket is improved.After the completion of being fully welded, the shape of molding end socket is measured, with Verify whether molding end socket 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 be unable to complete the assembling of steel containment vessel.

Preferably, in the step S3, the supporting block is cuboid block, is clicked through to the support center of the supporting block When row measurement, diagonal line is first drawn on the top surface of the supporting block, and cornerwise intersection point is the support of the supporting block Central point.In this way, the measurement accuracy at the support midpoint of supporting 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 endpoints measure.In this way, 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 be improved the upper port radius r's that measurement obtains Precision, and then the assembly precision of end socket can be improved.

Preferably, in the step S4, the three-dimensional coordinate for the adjustment measurement point that measurement obtains is input to drawing In software, the size of the adjustment end socket group plate is obtained.In this way, assembler can directly 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, using the partial deviations in the total station CV bottom (head) unformed to shape into When row measurement, the total station is erected on the inner surface center of the CV bottom (head), and in the inner surface of the CV bottom (head) Upper several equally distributed measurement points of setting.

Preferably, in the step S6, when being measured using total station to the cylinder end diameter d, first with institute It states total station to measure the diameter measurement point M point on the inner surface for being located at the molding CV bottom (head), and the M point is perpendicular When the upward absolute altitude of histogram is 11430mm ± 1mm, the angle [alpha] of M point is recordedMWith radius rM;Then by the total station along horizontal Direction rotates 180 degree, and measures to the absolute altitude of the total station corresponding diameter measurement point, when the diameter measurement point When absolute altitude is 11430mm ± 1mm, which is denoted as N point, and record the angle [alpha] of N pointNWith radius rN, and work as αMWith αNWhen according to being respectively less than or be equal to 5 °, rM+rN=d.In this way, the measurement accuracy of the cylinder end diameter of end socket can be improved.

Preferably, in the CV bottom (head), 1 diameter measurement points are provided on each end socket group plate.

The present invention also proposes a kind of assemble method of steel containment vessel in AP1000 nuclear power station, is utilizing any of the above-described kind The assemble method of the end socket of steel containment vessel is by after the end socket assembled formation in AP1000 nuclear power station, in molding CV end socket Cross reflector plate is set at the center of inner surface, and the end socket is installed in place, using total station to described cross anti- It penetrates piece to measure, obtains the coordinate at the center of the cross reflector plate, and the center of the end socket is calculated Coordinate;

Several contour measurement points are arranged in the inner circle of the upper port of the molding CV end socket, and utilize total station pair The absolute altitude of the contour measurement point measures, and obtains the installation level of the molding CV end socket;

Unwrapping wire and the branch at least eight and nuclear island is marked on the flange of the prop of the molding CV bottom (head) The corresponding installation anchor point of location point on column platform;It is installed on the leg platform in the molding CV bottom (head) Afterwards, and when the coincidence of installation anchor point location point corresponding with position, the installation site of the molding CV bottom (head) Accurately;When not being overlapped of anchor point location point corresponding with position, the installation position of the molding CV bottom (head) are installed when described It sets there are deviation, the installation site of the molding CV bottom (head) is adjusted, until the peace of the molding CV bottom (head) Holding position is accurate;

CV cylinder is installed on the CV bottom (head), and passes through welded connecting;Molding CV cover head is installed to institute The top of CV cylinder is stated, and by being welded to connect, steel containment vessel group is installed.

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 measure, and are adjusted according to installation site of the measurement result to end socket, can Guarantee the installation accuracy of end socket, and then improves the assembly precision of steel containment vessel.

Preferably, the contour measurement point position is on the inner surface of the molding CV end socket and apart from the molding CV Distance at 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 the installation level of end socket is caused to measure inaccuracy.

Preferably, the quantity of the contour measurement point is 8, and is evenly distributed on the same circumference, to improve end socket Installation level measurement accuracy.

Detailed description of the invention

Fig. 1 is to establish putting down for assembly platform in AP1000 nuclear power station of the present invention in the assemble method of the end socket of steel containment vessel The schematic diagram of the plane coordinate system of areal coordinate system and CV bottom (head);

Fig. 2 is that the laying of adjustment measurement point when measuring in the method for the present invention to the size of adjustment end socket group plate is illustrated Figure;

Fig. 3 is when being measured using template to the shape of end socket in the method for the present invention, and template is on end socket inner surface Layout diagram.

Specific embodiment

In the following, being carried out to the assemble method of AP1000 steel containment vessel of nuclear power station of the present invention and its end socket detailed in conjunction with Fig. 1-3 It describes in detail bright.

Since steel containment vessel is made of CV cylinder, CV cover head and CV bottom (head), wherein CV cover head is mounted on CV The top of body, CV bottom (head) is mounted on the low side of CV cylinder, and the shape and size of CV cover head and CV bottom (head) are extremely approximate, Therefore by taking CV bottom (head) as an example, the assembling process of steel containment vessel and its end socket in AP1000 nuclear power station is described in detail.Its In, assembled that specific step is as follows to the CV bottom (head) of steel containment vessel in AP1000 nuclear power station:

Step S1, it assembles assembly platform and establishes the plane coordinates of plane coordinate system XOY and the CV bottom (head) of assembly platform It is X'O'Y'.

Firstly, assembling in assembling place to the assembly platform of assembling CV bottom (head), which includes branch Support steel construction and the supporting block being movably arranged on support steel construction can as needed adjust supporting block in an assembling process It is whole, the assembly precision of assembly platform is improved, and then improve the assembly precision of CV bottom (head).Preferably, supporting block is cuboid block, The production is simple and convenient.

Then, as shown in Figure 1, according to design requirement assembling place in establish assembly platform plane coordinate system XOY and The plane coordinate system X'O'Y' of CV bottom (head), and the origin O' weight of the origin O and plane coordinate system X'O'Y' of plane coordinate system XOY It closes, there are differential seat angle θ between the X-direction of plane coordinate system XOY and the direction X' of plane coordinate system X'O'Y', and θ= 5.625°;There are differential seat angle β between the Y direction of plane coordinate system XOY and the direction Y' of plane coordinate system X'O'Y', and θ+β =180 °.

Step S2,4-6 control point is laid in 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.It is of course also possible to adjust the quantity at control point as needed and set Seated position.

Step S3, it is measured using support central point of the total station to the supporting block on assembly platform, and according to measurement As a result supporting block is adjusted with the theoretical shape of CV bottom (head), makes the outer profile of the theoretical shape of supporting block and CV bottom (head) Line fitting.Preferably due to which supporting block is cuboid block, when the support central point to supporting block measures, first supporting Diagonal line is drawn on the top surface of block, which is the support central point of supporting block, and measurement is simple and convenient, and measurement accuracy Height, and supporting block is adjusted according to the measurement result of support central point, the assembly precision of assembly platform can be improved.

Step S4, total station, and direction and absolute altitude using horizontal control network to the total station are set up in assembling place It is demarcated;

CV bottom (head) is assembled to obtain the unformed CV bottom (head) of shape.Since CV bottom (head) is by four circle group plates What circle was constituted, and first lap group plate circle is docked for semicircular arc end socket group plate by two pieces of plane projections and is formed, the second circle group Plate circle is to be docked to be formed by the arc end socket group plate that 6 pieces of plane projections are sector, and third circle group plate circle is by 24 pieces of plane projections It docks to be formed for fan-shaped arc end socket group plate, it is fan-shaped arc end socket group plate that the 4th circle group plate circle, which is by 32 pieces of plane projections, Docking is formed, therefore, by taking the 4th circle group plate circle assembly process as an example, the assembling process of CV bottom (head) is illustrated.

Using the direction X' of plane coordinate system X'O'Y' as prime direction, the starting end socket group in the 4th circle group plate circle 4 is installed Plate 41.End socket group plate 41 to be initiated installation to approximate location is when originating the origination side of head plate 41 close to the direction X', using complete Instrument of standing measures the center line of starting end socket group plate 41, and the center line of starting end socket group plate 41 is calculated according to measurement data The corresponding correspondence center line l in plane coordinate system X'O'Y'1, and to correspondence center line l1In starting end socket group plate 41 The corresponding center line l of the corresponding theory in plane coordinate system X'O'Y' of heart line1' be compared, as corresponding center line l1It is right with theory Answer center line l1' when not being overlapped, starting end socket group plate 41 is adjusted, until corresponding center line l1With theoretical corresponding center line l1' be overlapped.When the center line to starting end socket group plate 41 measures, go out to originate the upper of end socket group plate 41 with total station survey The plane coordinates at the midpoint at the midpoint and lower mouth of mouth, the center line that starting end socket group plate 41 can be calculated are corresponding in plane seat Correspondence center line in mark system X'O'Y'.

Subsequent Middle head group plate 42 in 4th circle group plate circle 4 is installed, and in Middle head group plate 42 Heart line measures, and the center line for calculating the Middle head group plate 42 according to measurement data is corresponding in plane coordinate system X'O'Y' In correspondence 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' The corresponding center line l of theory in O'Y'In' be compared, when the two is not overlapped, Middle head group plate 42 is adjusted, directly It is overlapped to the two, and Middle head group plate 42 is welded and fixed by spot welding method.In to Middle head group plate 42 When heart line measures, specific measurement method is identical with the measurement method of the center line to starting head plate 41.

Due to including 32 blocks of end socket group plates in the 4th circle group plate circle 4, to guarantee assembled the 4th circle group plate circle formed 4 precision is sealed using 1 or 2 block of end socket group plate as adjustment end socket group plate 43, and in assembly according to the adjustment that assembly needs The size of head group plate 43 carries out processing 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 Radial camber line subscript on the Middle head group plate 42 of two sides along CV bottom (head) remembers several adjustment measurement points 421 out, these tune Whole measurement point 421 close to Middle head group plate 42 towards the abutting edge 422 of adjustment head plate 43, and in same radial 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 segmental arc between 421.Radial camber line is referred in end socket inner surface and by the center of end socket inner surface The arc intersection of point and the plane vertical with end socket port being crossed to form.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 the adjustment measurement point 421 that measurement obtains is input to the three-dimensional drawings softwares such as mapping software such as CAD, ProE In, you can get it adjustment end socket group plate 43 size, it is easy to operate, and obtain adjustment end socket group plate 43 dimensional accuracy It is high.Adjustment end socket group plate 43 is processed according to the size for the adjustment end socket group plate 43 being calculated, it is right after processing is completed Adjustment public attention group plate 43 install and fixed by spot welding, to obtain the unformed CV bottom (head) of shape.

In this way, passing through the center line to end socket group plate during carrying out assembled formation group plate circle to end socket group plate Measurement, determines the accuracy of the installation site of end socket group plate, and adjust according to installation site of the accuracy to end socket group plate It is whole, to improve the installation accuracy of end socket group plate, and then improve the assembly precision of bottom (head).

It is measured using upper port radius r and levelness of the total station to the 4th circle group plate circle 4, and records what measurement obtained The value of upper port radius r and levelness.Preferably, pass through the midpoint and two suitable for reading to each block of end socket group plate in the 4th circle group plate circle A endpoint measures, and to obtain the upper port radius r of the 4th circle group plate circle 4, the essence for the upper port radius r that measurement obtains can be improved Degree, and then the assembly precision of end socket can be improved.

Step S5, it is measured using the shape of total station or template the CV bottom (head) unformed to shape, obtains this not Partial deviations in molding CV bottom (head) adjust welding parameter in order to assemble construction personnel according to partial deviations amount, thus The partial deviations in CV bottom (head) are adjusted by welding deformation, reduce deviation.As shown in figure 3, in use template 5 to CV When partial deviations in bottom (head) measure, the arc length of used template 5 is greater than or equal to 4776mm.Utilize total station pair When partial deviations in the unformed CV bottom (head) of shape measure, total station is erected at the inner surface center of CV bottom (head) On, and several equally distributed measurement points are set on the inner surface of CV bottom (head).After being measured, in CV bottom (head) End socket group plate be fully welded being welded and fixed, in being fully welded welding process, using total station or template to the shape of CV bottom (head) It is monitored measurement, and welding parameter is adjusted according to the situation of change of the shape of CV bottom (head), the shape of CV bottom (head) is carried out Welding adjustment is completed until being fully welded welding, the shape molding of CV bottom (head).In this way, the shape of CV bottom (head) can be reduced because of welding The deformation of generation, and then improve the assembly precision of bottom (head).

Step S6, total station is erected on the inner surface center P of molding CV bottom (head), measures molding CV underseal The cylinder end diameter d of head, and cylinder end diameter d and point P in the vertical direction at a distance from for 11430mm.Utilizing total station When being measured to cylinder end diameter d, first with total station to the diameter measurement on the inner surface for being located at molding CV bottom (head) Point M point measures, and the absolute altitude of M point in the vertical direction be 11430mm ± 1mm when, record M point angle [alpha]MAnd radius rM;Then total station is rotated into 180 degree in the horizontal direction, and the absolute altitude of total station corresponding diameter measurement point is measured, When the absolute altitude of diameter measurement point is 11430mm ± 1mm, which is denoted as N point, and record the angle [alpha] of N pointNWith Radius rN, and work as αMAnd αNWhen according to being respectively less than or be equal to 5 °, rM+rN=d.In this way, the cylinder end diameter of CV bottom (head) can be improved Measurement accuracy.Preferably, 1 diameter measurement points are provided on each end socket group plate, to further increase CV bottom (head) The measurement accuracy of cylinder end diameter.

The shape of molding CV bottom (head) is measured using total station or template, whether verifies molding CV bottom (head) Meet design requirement, if molding CV bottom (head) meets design requirement, CV bottom (head) is completed.In this way, only at the bottom CV When end socket meets design requirement, subsequent operation is just carried out, CV bottom (head) is installed to the bottom end of CV cylinder, 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 be unable to complete steel The assembling of containment processed.

Similarly, CV cover head is assembled using the above method.

After being completed CV cover head and CV bottom (head) using the above method, by molding CV cover head and CV underseal Head moves in nuclear island the assembling for carrying out steel containment vessel, and detailed process is as follows:

Firstly, the center in the inner surface of molding CV bottom (head) is arranged cross reflector plate, and by CV bottom (head) Installation is in place, is measured using total station to cross reflector plate, so that the coordinate at the center of cross reflector plate is obtained, into And the coordinate of CV bottom (head) inner surface central point is calculated.It is contour that several are laid in the inner circle of the upper port of CV bottom (head) Measurement point, and measured using absolute altitude of the total station to these contour measurement points, so that the installation of CV bottom (head) be calculated Levelness.Preferably, contour measurement point position is in the port on the inner surface of molding CV bottom (head), apart from molding CV bottom (head) 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 lead to end socket Installation level measure inaccuracy.Preferably, the quantity of contour measurement point is 8, and is evenly distributed on the same circumference, To improve the measurement accuracy of the installation level of end socket.Similarly, horizontal using installation of the above method to molding CV cover head Degree measures.

Then, on the flange on the prop of molding CV bottom (head) unwrapping wire and mark positioned at 0 °, 45 °, 90 °, 135 °, 180 °, 225 °, 270 ° and 315 ° of 8 installation anchor points, this 8 installation anchor points and nuclear island in leg platforms on 8 location points position it is corresponding, after molding CV bottom (head) is installed on the leg platform in nuclear island, 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) is accurate;When this 8 When a installation anchor point is not overlapped with 8 location points on the leg platform in nuclear island, the installation site of CV bottom (head) exists inclined Difference is adjusted the installation site of CV bottom (head), until the installation site of CV bottom (head) is accurate.

Finally, CV cylinder is installed on CV bottom (head), and pass through welded connecting;CV cover head is installed on CV cylinder End, and by being welded to connect, 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 measure, and are adjusted according to installation site of the measurement result to end socket, can Guarantee the installation accuracy of end socket, and then improves 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 station, the steel containment vessel include CV cylinder with And it is mounted on the CV cover head and CV bottom (head) at CV cylinder both ends, which is characterized in that the assemble method includes the following steps:
Step S1, in assembling place, the assembly platform of the CV bottom (head) is assembled, and the assembly platform includes branch Support steel construction and the supporting block being movably arranged on the support steel structure, and the assembly platform is established 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) with it is described The origin O' of plane coordinate system X'O'Y' is overlapped, the X-direction of the plane coordinate system XOY and the plane coordinate system X'O'Y' The direction X' between there are differential seat angle θ, and θ=5.625 °, the Y direction of the plane coordinate system XOY and the plane coordinates It is between the direction Y' of X'O'Y' there are differential seat angle β, and+β=180 ° θ;
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, it is measured using support central point of the total station to the supporting block on the assembly platform, and according to measurement As a result the theoretical shape with the CV bottom (head) is adjusted the supporting block, makes the supporting block and the CV bottom (head) The outer contour of theoretical shape is bonded;
Step S4, set up total station in the assembling place, and using the horizontal control network to the direction of the total station and Absolute altitude is demarcated;
The CV bottom (head) is assembled to obtain the unformed CV bottom (head) of shape, and each circle in the CV bottom (head) Group plate circle carry out assembling process in,
Firstly, installing the starting end socket in described group of plate circle using the direction X' of the plane coordinate system X'O'Y' as prime direction Group plate, when the starting end socket group plate is installed to approximate location, using the total station in the starting end socket group plate Heart line measures, and the center line for calculating the starting end socket group plate according to measurement data is corresponding in the plane coordinate system X' Correspondence center line l in O'Y'1, and to correspondence center line l1It is corresponding with the starting center line of end socket group plate to be put down described The corresponding center line l of theory in areal coordinate system X'O'Y'1' be compared, as the corresponding center line l1In corresponding with the theory Heart line l1' when not being overlapped, the starting end socket group plate is adjusted, until the corresponding center line l1It is corresponding with the theory Center line l1' be overlapped;
Then, subsequent Middle head group plate in described group of plate circle is installed, and to the center of the Middle head group plate Line measures, and the center line for calculating the Middle head group plate according to measurement data is corresponding in the plane coordinate system X'O'Y' In correspondence 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 The corresponding center line l of theory in mark system X'O'Y'In' be compared, when the two is not overlapped, the Middle head group plate is carried out Adjustment until the two is overlapped, and is welded and fixed the Middle head group plate by spot welding method;
Then, before mounting and adjusting end socket group plate, the end socket group of the adjustment end socket group plate two sides is located in described group of plate circle Radial arc wire tag on plate along the CV bottom (head) goes out several adjustment measurement points, and the adjustment measurement point is close to the end socket Group plate towards the adjustment head plate abutting edge, and on same radial camber line, any two adjust measurement point with it is described Spacing between abutting edge is equal, and arc length c≤2m of the radial segmental arc between two adjustment measurement points of arbitrary neighborhood is utilized 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 out processes the adjustment end socket group plate, after processing is completed to the adjustment wind Head group plate install and fixed by spot welding;
Finally, measured using upper port radius r and levelness of the total station to described group of plate circle, and record measurement obtain it is upper The value of port radius r and levelness;
Step S5, before the CV bottom (head) is completed and carries out being fully welded welding, using total station or template to shape not at Partial deviations in the CV bottom (head) of type measure, and the arc length of the template is greater than or equal to 4776mm;It is being measured Afterwards, the end socket group plate in the CV bottom (head) be fully welded being welded and fixed, and in being fully welded welding process using total station or Template is monitored measurement to the shape of the CV bottom (head), and is welded according to the situation of change of the shape of the CV bottom (head) Adjustment is connect, until welding is completed, the shape molding of the CV bottom (head);
Step S6, total station is erected on the inner surface center of the molding CV bottom (head), is measured in the vertical direction The cylinder end diameter d of inner surface central point 11430mm apart from the molding CV bottom (head);Using total station or template at The shape of the CV bottom (head) of type measures, and verifies whether the molding CV bottom (head) meets design requirement, if the molding CV bottom (head) meet design requirement, then the CV bottom (head) is completed;
Similarly, the CV cover head is assembled using the above method.
2. the assemble method of the end socket of steel containment vessel in AP1000 nuclear power station according to claim 1, which is characterized in that In the step S3, the supporting block is cuboid block, when measuring to the support central point of the supporting block, first in institute It states and draws diagonal line on the top surface of supporting block, and cornerwise intersection point is the support central point of the supporting block.
3. according to right to require 1 or 2 described in AP1000 nuclear power station the end socket of steel containment vessel assemble method, feature 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 endpoints measure.
4. the assemble method of the end socket of steel containment vessel in AP1000 nuclear power station according to claim 3, which is characterized in that In the step S4, the three-dimensional coordinate for the adjustment measurement point that measurement obtains is input in mapping software, is obtained 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 station according to claim 4, which is characterized in that It is described full when being measured using the partial deviations in the total station CV bottom (head) unformed to shape in the step S5 Instrument of standing is erected on the inner surface center of the CV bottom (head), and several are arranged uniformly on the inner surface of the CV bottom (head) The measurement point of distribution.
6. the assemble method of the end socket of steel containment vessel in AP1000 nuclear power station according to claim 5, which is characterized in that In the step S6, when being measured using total station to the cylinder end diameter d, first with the total station to positioned at institute The diameter measurement point M point stated on the inner surface of molding CV bottom (head) measures, and the absolute altitude of M point in the vertical direction is When 11430mm ± 1mm, the angle [alpha] of M point is recordedMWith radius rM;Then the total station is rotated into 180 degree in the horizontal direction, and The absolute altitude of the total station corresponding diameter measurement point is measured, when the diameter measurement point absolute altitude be 11430mm ± When 1mm, which is denoted as N point, and record the angle [alpha] of N pointNWith 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 station according to claim 6, which is characterized in that In the CV bottom (head), 1 diameter measurement points are provided on each end socket group plate.
8. the assemble method of steel containment vessel, spy are in a kind of AP1000 nuclear power station, any in utilizing claim 1-7 The assemble method of the end socket of steel containment vessel is being formed after the end socket assembled formation in AP1000 nuclear power station described in one CV end socket inner surface center at the cross reflector plate of setting, and the end socket installed it is in place, using total station to institute It states cross reflector plate to measure, obtains the coordinate at the center of the cross reflector plate, and the end socket is calculated The coordinate of center;
Several contour measurement points are arranged in the inner circle of the upper port of the molding CV end socket, and using total station to described The absolute altitude of contour measurement point measures, and obtains the installation level of the molding CV end socket;
The unwrapping wire and to mark the pillar at least eight and nuclear island flat on the flange of the prop of the molding CV bottom (head) The corresponding installation anchor point of location point on platform;After the molding CV bottom (head) is installed on the leg platform, and When the coincidence of installation anchor point location point corresponding with position, the installation site of the molding CV bottom (head) is accurate; When installation anchor point location point corresponding with position is not when being overlapped, the installation site of the molding CV bottom (head) exists Deviation is adjusted the installation site of the molding CV bottom (head), until the installation site of the molding CV bottom (head) Accurately;
CV cylinder is installed on the CV bottom (head), and passes through welded connecting;Molding CV cover head is installed to the CV The top of cylinder, and by being welded to connect, steel containment vessel group installs.
9. the assemble method of steel containment vessel in AP1000 nuclear power station according to claim 8, which is characterized in that described etc. The distance that high measurement point is located on the inner surface of the molding CV end socket and at the port apart from the molding CV end socket is S, and 0 < S≤200mm.
10. the assemble method of steel containment vessel in the AP1000 nuclear power station according to claim 8, which is characterized in that described The quantity of contour measurement point is 8, and is evenly distributed on the same circumference.
CN201710304901.3A 2017-05-03 2017-05-03 The assemble method of steel containment vessel and its end socket in AP1000 nuclear power station CN107093472B (en)

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