CN103982706A - Method used for mounting nuclear power plant voltage stabilizer surge pipe - Google Patents
Method used for mounting nuclear power plant voltage stabilizer surge pipe Download PDFInfo
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- CN103982706A CN103982706A CN201410214259.6A CN201410214259A CN103982706A CN 103982706 A CN103982706 A CN 103982706A CN 201410214259 A CN201410214259 A CN 201410214259A CN 103982706 A CN103982706 A CN 103982706A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
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Abstract
The invention relates to the field of nuclear power plant installation, aims at solving the problem that the installation precision of the existing surge pipe is low, and provides a method used for mounting a nuclear power plant voltage stabilizer surge pipe. The method comprises the steps that the completion size of the surge pipe is measured by using close-range photogrammetry; the surge pipe is processed to enable the size of the surge pipe to conform to the design size; the position coordinates of the surge pipe are measured by using total station three-dimensional control net measurement, the position of the surge pipe is adjusted according to the position coordinates until the surge pipe is adjusted to a position which is designed in advance; the surge pipe is welded. According to the method used for mounting the nuclear power plant voltage stabilizer surge pipe, the precision and the accuracy of surge pipe installation are improved.
Description
Technical field
The present invention relates to nuclear power plant installing area, be specifically related to a kind of for the method for nuclear power plant's Pressurizer surge line is installed.
Background technique
Nuclear power plant's Pressurizer surge line (hereinafter to be referred as fluctuation pipe) is for connecting voltage stabilizer and major loop, and fluctuation pipe is one of most important pipeline in reactor coolant loop.Fluctuation pipe is comprised of 7 segment pipes, and every segment pipe is all the bend pipe that has certain radian, and Fig. 1 is the schematic top plan view of a segment pipe of fluctuation pipe, and every segment pipe has two end faces, the first end face 111 and the second end face 112.When fluctuation pipe is installed, from the voltage stabilizer mouth of pipe, start welding, this 7 segment pipe is welded together successively, be finally connected to major loop mouth of pipe place.
The completion size of the every segment pipe of fluctuation pipe all leaves certain surplus with respect to design size, the completion size here refers to size when fluctuation Guan manufactory machines, manufactory machines the size that fluctuation Guan Houhui provides a fluctuation pipe, but the size providing has deviation with the actual size of fluctuation pipe, so the size that can not rely on manufactory to provide in installation process; Design size refers to the size of the installation fluctuation pipe of design in advance, is known size.In installation process, need fluctuation pipe to carry out the operations such as groove processing, so the completion size of every segment pipe is compared with design size and all left certain surplus, more convenient like this processing.
The method that fluctuation pipe is installed is at present: one: the central coordinate of circle that marks every segment pipe of design on the ground of erecting bed projects to the position on ground; Two: the central coordinate of circle that marks every segment pipe of design on the metope of erecting bed projects to the position of metope; Three: pipe pre-installation will fluctuate, the position whether position that survey crew utilizes spirit level and line pendant to measure the center of circle of every segment pipe is being designed, namely whether with ground on the position that marks on same vertical line, whether with metope on the position that marks on same horizontal line, if, in the position of design, do not record the difference with the position of designing.When groove processing or cutting, according to above-mentioned difference, fluctuation pipe is cut, through adjusting like this, the pipe that finally makes to fluctuate is arranged on the position of design.The method of above-mentioned installation fluctuation pipe, installation precision is low.
Summary of the invention
In order to solve the low problem of current fluctuation pipe installation precision, the present invention proposes a kind of for the method for nuclear power plant's Pressurizer surge line is installed, to realize the object that improves fluctuation pipe installation precision.
Of the present invention for the method for nuclear power plant's Pressurizer surge line is installed, comprising: a: the completion size of the pipe that fluctuates described in use close-range photogrammetry; B: process described fluctuation pipe, make the size conforms design size of described fluctuation pipe; C: use electronic tachometer three dimensional control network to measure the position coordinate of described fluctuation pipe, adjust the position of described fluctuation pipe according to described position coordinate, until described fluctuation pipe is adjusted to the position of design in advance; D: weld described fluctuation pipe.
It is of the present invention for the method for nuclear power plant's Pressurizer surge line is installed, use close-range photogrammetry go out the to fluctuate completion size of pipe, thereby the size that obtains being completed is accurately with respect to the surplus of design size, and according to the surplus processing fluctuation pipe obtaining, the pipe that makes to fluctuate meets design size; Use electronic tachometer three dimensional control network to measure the position coordinate of fluctuation pipe, the position according to the position coordinate of the fluctuation pipe recording with the difference adjustment fluctuation pipe of the design coordinate of fluctuation pipe, the pipe that fluctuates is the most at last placed into the position of design.Precision and the degree of accuracy that has improved on the whole the installation of fluctuation pipe for the method for nuclear power plant's Pressurizer surge line is installed of the present invention, also having improved the automatization level that fluctuation pipe is installed.
Wherein, use the step of the completion size of the pipe that fluctuates described in close-range photogrammetry to comprise:
I: the first end face and the second end face at described fluctuation pipe are pasted respectively at least three blips;
II: pasting at least two circle blips near the outer wall of described the first end face, and each circle comprises at least three blips, paste at least two circle blips at the outer wall near described the second end face, and each circle comprises at least three blips;
III: by close-range photogrammetry, draw the coordinate of described blip;
IV: simulate round R1 according at least three of the first end face blips; According at least three of the second end face blips, simulate round R2;
V: go out at least two circles according to the coordinate fitting of at least two circle blips of the outer wall near described the first end face, straight line L2 is determined in the center of circle; According to the coordinate fitting of at least two circle blips of the outer wall near described the second end face, go out at least two circles, straight line L1 is determined in the center of circle, and the intersection point of described straight line L1 and described straight line L2 is O;
VI: intersection point O is the length of one section of described fluctuation pipe with the distance in the center of circle of circle R1, described intersection point O is the length that another section managed in described fluctuation with the distance in the center of circle of circle R2, the angle of described straight line L1 and straight line L2 is the bent angle angle of described fluctuation pipe, calculate the distance in the center of circle and the angle of straight line L1 and straight line L2 of distance, intersection point O and the circle R2 in the center of circle of described intersection point O and circle R1, obtain the size of described fluctuation pipe.
On fluctuation pipe, the blip of fair amount is pasted in position reasonable in design, adopt close-range photogrammetry to go out the coordinate of all target identifications, coordinate fitting by blip go out the to fluctuate shape of pipe, calculate again diameter, length and the bend pipe angle of fluctuation pipe, because the position that blip is pasted and the reasonable setting of quantity, improved degree of accuracy and the precision measured.
Wherein, at the first end face and second end face of described fluctuation pipe, paste respectively eight blips; At the outer wall near described the first end face, paste three circle blips, and each circle comprises eight blips; At the outer wall near described the second end face, paste three circle blips, and each circle comprises eight blips.Select eight blips as measuring point, can improve like this degree of accuracy of measurement.
Wherein, at the first end face and second end face of described fluctuation pipe, evenly paste blip.Get so a little evenly, in the back according to the coordinate fitting bowlder of blip, the calculating and the calculating that are convenient for measuring point coordinates are more accurate.
Wherein, at the outer wall of the first end face near described fluctuation pipe, paste at least two circle blips, and every circle blip is uniformly distributed in the outer wall of fluctuation pipe; At the outer wall of the second end face near described fluctuation pipe, paste at least two circle blips, and every circle blip is uniformly distributed in the outer wall of fluctuation pipe.Measuring point is uniformly distributed like this, and the calculating and the calculating that are convenient for measuring point coordinates are more accurate.
Wherein, the blip of pasting at the first end face and second end face of described fluctuation pipe aligns with the madial wall of described fluctuation pipe.Can guarantee that like this blip, in the equating with the distance in the center of circle of fluctuation pipe in the radial direction of fluctuation pipe, improves the degree of accuracy of measurement.
Accompanying drawing explanation
Fig. 1 is the schematic top plan view of a segment pipe of fluctuation pipe;
Fig. 2 is of the present invention for the flow chart of the method for nuclear power plant's Pressurizer surge line is installed;
Fig. 3 is the schematic diagram that blip sticks on the end face of fluctuation pipe;
Fig. 4 is the schematic diagram that blip sticks on fluctuation pipe outer wall.
Embodiment
Fig. 2 is of the present invention for the flow chart of the method for nuclear power plant's Pressurizer surge line is installed.In step 101, use the completion size of close-range photogrammetry fluctuation pipe, measure after the completion size of fluctuation pipe, use design size to deduct the completion size surplus of size with respect to design size that just obtain being completed; In step 102, the completion size drawing according to step 101, with respect to the surplus of design size, is carried out groove processing and cutting to fluctuation pipe, so that the size conforms design size of fluctuation pipe; In step 103, electronic tachometer three dimensional control network is set up XYZ coordinate system, with electronic tachometer three dimensional control network, measure the position coordinate of fluctuation pipe, design coordinate comparison by the position coordinate of fluctuation pipe with fluctuation pipe, according to the actual coordinate of fluctuation pipe and the position of design coordinate at the difference adjustment fluctuation pipe of X, Y and Z-direction, so that fluctuation pipe is installed to the position of design.
Introduce in detail each step below.
In step 101, use the completion size of close-range photogrammetry fluctuation pipe, completion size refers to actual size when fluctuation Guan manufactory machines.Manufactory machines the size that fluctuation Guan Houhui provides a fluctuation pipe, but the size providing has deviation with the actual size of fluctuation pipe, so need to measure the actual size of the fluctuation pipe size of being namely completed.
Close-range photogrammetry be by photography means to determine the technology of the profile of object, can use close range photogrammetric system V-stars system here, V-stars system is the industrial digital up short coordinate measuring machine of U.S. GSI company development.The instrument that close-range photogrammetry is used comprises metric camera or solid-state camera, the software that photogrammetric data analysis is calculated, blip etc., here blip sticks on fluctuation tube-surface, by metric camera or solid-state camera, obtain the coordinate of blip, by the coordinate of blip, by software digital simulation, be circle again, just can draw shape and the size of fluctuation pipe.
First blip is pasted above fluctuation pipe.Fig. 3 is the schematic diagram that blip sticks on the end face of fluctuation pipe, the first end face 111 at fluctuation pipe is pasted with eight blips 113, blip 113 is uniformly distributed at the first end face 111, even like this getting a little, in the back according to the coordinate fitting bowlder of blip 113, facilitate calculating and the calculating of data more accurate, the number of the first end face 111 blip 113 is above at least three, because 3 are determined circles; And blip 113 aligns with the madial wall of fluctuation pipe, can guarantee that like this eight blips 113, in the equating with the distance in the center of circle of fluctuation pipe in the radial direction of fluctuation pipe, improve the degree of accuracy of measurement.Same, the second end face 112 of fluctuation pipe is pasted with eight blips 113, and blip 113 is uniformly distributed at the second end face 112, and the number of the second end face 112 blip 113 is above at least three; And blip 113 aligns with the madial wall of fluctuation pipe, can guarantee like this eight blips 113 equating with the distance in the center of circle of fluctuation pipe in the radial direction at fluctuation pipe.Fig. 4 is the schematic diagram that blip 113 sticks on the outer wall of fluctuation pipe, near above the outer wall of the first end face 111, be pasted with three circle blips 113, and each circle comprises eight blips 113, eight blips 113 of each circle are evenly distributed on the outer wall of fluctuation pipe, get so a little even, according to the coordinate fitting bowlder of blip 113, facilitate the calculating of data and calculating more accurate in the back.The number of turns of the blip 113 of pasting can be also Liang Quan, four circles or multi-turn more, but be at least two circles, the coordinate of two circle blips 113 can simulate two circles, then obtain two centers of circle, in calculating the big or small process of fluctuation pipe, need to determine straight line with these two centers of circle, i.e. 2 definite straight lines.Near above the outer wall of the second end face 112, be pasted with three circle blips 113, and each circle comprises eight blips 113, eight blips of each circle are evenly distributed on the outer wall of fluctuation pipe, get so a little even, according to the coordinate fitting bowlder of blip 113, facilitate the calculating of data and calculating more accurate in the back.The number of turns of the blip 113 of pasting can be also Liang Quan, four circles or multi-turn more, but is at least two circles.
On fluctuation pipe, also can paste some coding makers, for subsidiary, the position of stickup is without specific (special) requirements.Station meter (scalebar), namely yellow long rod, is positioned over above fluctuation pipe, and position is without fixedly requirement, for fixing graphics proportion.The gauge of black cross shape (autobar) is positioned over above fluctuation pipe, and position is without fixedly requirement, and gauge has the survey mark of fixed position, and Digital Photogrammetric System V-stars is identification automatically, utilizes gauge to set up initial coordinate system.
By using metric camera or solid-state camera, fluctuation pipe is taken, draw the coordinate that sticks on fluctuation pipe blip 113 above, to in the coordinate figure input V-stars systems soft ware of blip 113, calculate, to draw the size of fluctuation pipe, comprise diameter, length and the bend pipe angle of the pipe that fluctuates.First the first end face 111 eight blips 113 are above fitted to a circle, called after circle R1, the second end face 112 eight blips are above fitted to a circle, called after circle R2, if the second end face 112 has passed through groove processing, and used eight guarantee blip 113 in the radial direction with the center of circle equidistant gadgets of fluctuation pipe, first eight blips 113 are fitted to a plane, gadgets is projected to the plane of matching, eight points after projection are fitting circle more again.The process of matching is calculated by V-stars, according to the some fitting circle in a plane or fitting a straight line etc., is algorithm known on mathematics.Near the second end face 112 outer walls, be pasted with three circle blips 113, each circle comprises eight blips 113, eight blips 113 of each circle are fitted to circle, three circle blips 113 simulate altogether three circles, difference called after circle R3, circle R4 and circle R5, the center of circle of getting round R3, circle R4 and round R5, altogether three points, these three some fitting a straight line L1, equally also calculate by V-stars systems soft ware.At the outer wall near the first end face 111, be pasted with three circle blips 113, each circle comprises eight blips, eight blips 113 of each circle are fitted to circle, three circle blips 113 simulate altogether three circles, difference called after circle R6, circle R7 and circle R8, the center of circle of getting round R6, circle R7 and circle R8, has three points altogether, these three some fitting a straight line L2.The intersection point of straight line L2 and straight line L1 is O.Intersection point O manages the length of one section with the distance in the center of circle of circle R1 for fluctuating, intersection point O manages the length of another section with the distance in the center of circle of circle R2 for fluctuating, and the angle of straight line L1 and straight line L2 is the bent angle angle of fluctuation pipe.Intersection point O and distance, the intersection point O in the center of circle of circle R1 are to utilize coordinate separately to calculate by V-stars systems soft ware with the distance in the center of circle and the angle of straight line L1 and straight line L2 of circle R2.So just drawn the completion size of fluctuation pipe.
In step 102, the completion size of the fluctuation pipe drawing according to step 101, processing fluctuation pipe, so that the size conforms design size of fluctuation pipe.Design size refers to the size of the installation fluctuation pipe of design in advance.The completion size of every segment pipe is compared with design size and is all left certain surplus, and the completion size of pipeline deducts the accurate numerical value that design size just draws surplus.Fluctuation pipe is comprised of 7 segment pipes, and adjacent two segment pipes are fixed together by welding, and before welding, will carry out groove processing to pipeline.Drawn now the accurate numerical value of completion size with respect to the surplus of design size, in groove processing or cutting process, surplus has been cut away, the true-to-size of the pipe that makes to fluctuate meets design size.
In step 103, the size of the pipe that now fluctuates has been design size.When first paragraph pipeline is installed, by one end of first paragraph pipeline with the voltage stabilizer port set of nuclear power plant to being connected, group is to requiring as gap is in 1mm, misalignment is in 1.5mm, the other end of first paragraph pipeline is first by chain block or other tool support.In factory building, set up electronic tachometer three dimensional control network, the coordinate of fluctuation pipe in electronic tachometer three dimensional control network is pre-designed, comprises that the mouth of pipe center of the pipe that fluctuates and corner etc. are all designed with coordinate.Electronic tachometer three dimensional control network will be set up X/Y/Z three-dimensional system of coordinate.On the end face of the other end of first paragraph pipeline, evenly get eight points, use three dimensional control network to record the coordinate of these eight points, according to the coordinate fitting of these eight points, go out circle, then calculate the coordinate in the center of circle, just draw the central coordinate of circle of end face of the other end of first paragraph pipeline.By the design coordinate comparison in the center of circle of the central coordinate of circle recording and first paragraph pipeline, according to recording coordinate and the difference of design coordinate in X, Y, Z axis direction, adjust the position of first paragraph pipeline, can use chain block or other instrument adjustment, first paragraph pipeline is adjusted to the coordinate position of design the most at last.Then, first paragraph pipeline and nuclear power plant's voltage stabilizer are welded together.Adjust successively after the same method position the welding of second segment to the seven segment pipes.
Of the present invention for the method for nuclear power plant's Pressurizer surge line is installed, first utilize up short to accurately measure the completion size of fluctuation pipe; Then by completion size and the design size comparison of fluctuation pipe, show that completion size is with respect to the surplus of design size; In the groove processing of fluctuation pipe and cutting process, surplus is cut away, so that the pipe that fluctuates meets design size; Then utilize electronic tachometer at the three dimensional control network of erecting bed foundation, fluctuation pipe is moved to the coordinate position of design.Precision and the degree of accuracy that has improved on the whole the installation of fluctuation pipe for the method for nuclear power plant's Pressurizer surge line is installed of the present invention.
Claims (6)
1. for a method for nuclear power plant's Pressurizer surge line is installed, it is characterized in that, comprising:
A: the completion size of the pipe that fluctuates described in use close-range photogrammetry;
B: process described fluctuation pipe, make the size conforms design size of described fluctuation pipe;
C: use electronic tachometer three dimensional control network to measure the position coordinate of described fluctuation pipe, adjust the position of described fluctuation pipe according to described position coordinate, until described fluctuation pipe is adjusted to the position of design in advance;
D: weld described fluctuation pipe.
2. according to claim 1ly for the method for nuclear power plant's Pressurizer surge line is installed, it is characterized in that, use the step of the completion size of the pipe that fluctuates described in close-range photogrammetry to comprise:
I: the first end face (111) and the second end face (112) at described fluctuation pipe are pasted respectively at least three blips (113);
II: paste at least two circle blips (113) at the outer wall near described the first end face (111), and each circle comprises at least three blips (113), at the outer wall near described the second end face (112), paste at least two circle blips (113), and each circle comprises at least three blips (113);
III: by close-range photogrammetry, draw the coordinate of described blip (113);
IV: simulate round R1 according at least three blips (113) of the first end face (111); According at least three blips (113) of the second end face (112), simulate round R2;
V: go out at least two circles according to the coordinate fitting of at least two circle blips (113) of the outer wall near described the first end face (111), straight line L2 is determined in the center of circle; According to the coordinate fitting of at least two circle blips (113) of the outer wall near described the second end face (112), go out at least two circles, straight line L1 is determined in the center of circle, and the intersection point of described straight line L1 and described straight line L2 is O;
VI: intersection point O is the length of one section of described fluctuation pipe with the distance in the center of circle of circle R1, described intersection point O is the length that another section managed in described fluctuation with the distance in the center of circle of circle R2, the angle of described straight line L1 and straight line L2 is the bent angle angle of described fluctuation pipe, calculate the distance in the center of circle and the angle of straight line L1 and straight line L2 of distance, intersection point O and the circle R2 in the center of circle of described intersection point O and circle R1, obtain the size of described fluctuation pipe.
3. according to claim 4ly for the method for nuclear power plant's Pressurizer surge line is installed, it is characterized in that, at the first end face (111) and second end face (112) of described fluctuation pipe, paste respectively eight blips (113);
At the outer wall near described the first end face (111), paste three circle blips (113), and each circle comprises eight blips (113);
At the outer wall near described the second end face (112), paste three circle blips (113), and each circle comprises eight blips (113).
According to described in claim 4 or 5 for the method for nuclear power plant's Pressurizer surge line is installed, it is characterized in that, at the first end face (111) and second end face (112) of described fluctuation pipe, evenly paste blip (113).
According to described in claim 4 or 5 for the method for nuclear power plant's Pressurizer surge line is installed, it is characterized in that, at the outer wall of the first end face (111) near described fluctuation pipe, paste at least two circle blips (113), and every circle blip (113) is uniformly distributed in the outer wall of fluctuation pipe; At the outer wall of the second end face (112) near described fluctuation pipe, paste at least two circle blips (113), and every circle blip (113) is uniformly distributed in the outer wall of fluctuation pipe.
According to described in claim 4 or 5 for the method for nuclear power plant's Pressurizer surge line is installed, it is characterized in that, the blip (113) of pasting at the first end face (111) and second end face (112) of described fluctuation pipe aligns with the madial wall of described fluctuation pipe.
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| CN106949315B (en) * | 2017-04-05 | 2018-11-09 | 中国核工业第五建设有限公司 | The installation method of main steam line in AP1000 nuclear power stations |
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Effective date of registration: 20201030 Address after: 101300 Beijing City, Shunyi District Shun Kang Road No. 58 Building 1 Patentee after: CHINA NUCLEAR INDUSTRY 23 CONSTRUCTION Co.,Ltd. Patentee after: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. Address before: 1, building 101300, building 18, Shuanghe Avenue, Linhe Development Zone, Beijing, Shunyi District, 306 Patentee before: CHINA NUCLEAR INDUSTRY 23 CONSTRUCTION Co.,Ltd. |
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Address after: 101300 Building 1, yard 58, Shunkang Road, Shunyi District, Beijing Patentee after: CHINA NUCLEAR INDUSTRY 23 CONSTRUCTION Co.,Ltd. Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: 101300 Building 1, yard 58, Shunkang Road, Shunyi District, Beijing Patentee before: CHINA NUCLEAR INDUSTRY 23 CONSTRUCTION Co.,Ltd. Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |