CN102637463A - Method for installing main loop system in nuclear island of nuclear power plant - Google Patents
Method for installing main loop system in nuclear island of nuclear power plant Download PDFInfo
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- CN102637463A CN102637463A CN2012101032994A CN201210103299A CN102637463A CN 102637463 A CN102637463 A CN 102637463A CN 2012101032994 A CN2012101032994 A CN 2012101032994A CN 201210103299 A CN201210103299 A CN 201210103299A CN 102637463 A CN102637463 A CN 102637463A
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Abstract
The invention relates to an installation method of an inner structure in a nuclear island of a nuclear power pant and provides a method for installing a main loop system in the nuclear island of the nuclear power plant, which aims at solving the problems of long installation period and high installation cost of the main loop system in the nuclear island of the nuclear power plant. The method comprises the following steps of: placing main equipment to be installed on a support device, wherein the main equipment is a pressure container, a vapor generator or a main pump case; determining arrangement positions of measurement points and the number of the measurement points arranged in the arrangement positions; arranging test points and common points; collecting coordinate data of the arranged measurement points; processing the collected coordinate data of the measurement points, establishing a body coordinate system of the main equipment to be established, and calculating to obtain the installation specification of a connection tube; and processing the connection tube and installing the main loop system in the nuclear island of the nuclear power plant. Therefore, the connection tube only needs to be processed and hoisted for once to complete the installation of the main loop system in the nuclear island of the nuclear power plant, so that the installation rate is improved, the installation time is shortened, and the installation cost is reduced.
Description
Technical field
The present invention relates to the installation method of nuclear island inner structure in the nuclear power station, relate in particular to the installation method of primary heat transport system in the nuclear island of nuclear power station.
Background technology
Primary heat transport system in the nuclear island of nuclear power station comprises the main equipment that is installed in the nuclear island such as pressure vessel, steam generator, main pump shell, and is used for connecting each main equipment and makes the connecting tube of their mutual conduction.
At present; During primary heat transport system in nuclear power station is installed; Normally earlier main equipment such as pressure vessel, steam generator and the main pump shell of nuclear island is installed in its design attitude in nuclear island according to design drawing; Again connecting tube is placed between each main equipment, and the port of connecting tube and the port on the main equipment is welded together, each interior main equipment of nuclear island is interconnected forms the primary heat transport system of conducting through the manual work welding.But; Because the actual specification and the design specification of main equipment and connecting tube have deviation; Such as physical size and design size, so the workmen after with the main equipment installation in position, winches to its predetermined installation site with connecting tube earlier; And connecting tube and connected two main equipments are carried out the assembly unit comparison; When the actual off-gauge of connecting tube was closed its installation requirement between these two main equipments, the comparison result during according to assembly unit was to the processing of making amendment of this connecting tube, and after machining, once more connecting tube lifted its predetermined installation site and carry out the assembly unit comparison; Actual specification until this connecting tube meets installation requirement, could be with this connecting tube installation in position.Like this, during primary heat transport system in nuclear island is installed, need behind the main equipment installation in position, carry out the assembly unit comparison to connecting tube, even revise repeatedly lifting of processing, it is more to cause installing the manpower and materials that primary heat transport system drops in the nuclear island, and installation rate is slow, and is long in time limit.In addition; Adopt artificial welding that the connecting portion between connecting tube and the main equipment is welded; Welding effect is poor, speed of welding is slow, long in time limit, welding cost is high; Also cause in the nuclear island installation period of primary heat transport system long, the installation cost height, and then cause the construction duration of nuclear power station long, cost is high.
Summary of the invention
For the installation period that solves the primary heat transport system in the nuclear island of nuclear power station in the prior art long, the problem that installation cost is high, the present invention proposes a kind of method that the interior primary heat transport system of nuclear island of nuclear power station is installed, and it is characterized in that this installation method comprises the steps:
The first step is placed on main equipment to be installed on the bracing or strutting arrangement, and said main equipment is pressure vessel, steam generator or main pump shell;
In second step, confirm the installation position of measurement point and the quantity of the measurement point on said installation position, laid:
On the inner installation supporting surface of said pressure vessel, lay at least three measurement points that do not overlap to confirm the plane at said installation supporting surface place; Interior along laying the coordinate of at least three measurement points that do not overlap with the center of circle of the plane of confirming this mouth of pipe end face place and this mouth of pipe on the circumference on the mouth of pipe end face of the mouth of pipe that is connected with connecting pipe on the said pressure vessel laid at least one measurement point to obtain the not coordinate of the intersection point of two body axis on same straight line on this pressure vessel on a body axis on the said pressure vessel;
On the outside and inner installation supporting surface of said steam generator, lay at least three measurement points that do not overlap respectively to confirm the plane at said installation supporting surface place; Interior on the mouth of pipe end face of the mouth of pipe that is connected with connecting pipe on the said steam generator along laying the coordinate of at least three measurement points that do not overlap on the circumference with the center of circle of the plane of confirming this mouth of pipe end face place and this mouth of pipe; On the outstanding cylindrical band on the said steam generator, choose at least two axial line location circumference that do not overlap, and on the circumference of said location, lay at least three measurement points that do not overlap to confirm the actual axial line of this steam generator;
On the inner installation supporting surface of said main pump shell, lay at least three measurement points that do not overlap to confirm the plane at said installation supporting surface place; Interior along laying the coordinate of at least three measurement points that do not overlap on the circumference on the mouth of pipe end face of the mouth of pipe that is connected with connecting pipe on the said main pump shell with the center of circle of the plane of confirming this mouth of pipe end face place and this mouth of pipe, interior on the collar extension end face of the suction choma of said main pump shell along laying at least three measurement points that do not overlap on circumference or the outer circumference to confirm the actual axial line of this main pump shell;
In the 3rd step, lay survey station point and common point:
The survey station point is laid in measurement place at said main equipment to be installed place, and the laser tracking measurement system that is placed on the said survey station point can be measured all measurement points of laying; Choose at least three common points so that said survey station point is interrelated in the same plane in the measurement place at said main equipment to be installed place, and said laser tracking measurement system is positioned at any survey station point last time and all can measures said common point;
The 4th step, the coordinate data of gathering the measurement point of being laid:
Open said laser tracking measurement system earlier and make its self calibration, and the three-dimensional commercial measurement software on operation and the computing machine that said laser tracking measurement system is connected, and on the interface of this three-dimensional commercial measurement software, add said laser tracking measurement system; Then laser tracking measurement system is placed on the survey station point, cooperates the accessory of said laser tracking measurement system that said measurement point is measured again, and the coordinate data that measures is transferred in the said three-dimensional commercial measurement software;
The 5th step, the coordinate data of the measurement point that processing collected arrives, and set up the body coordinate system of said main equipment to be installed, calculate the installation specification of said connecting pipe:
Utilize said three-dimensional commercial measurement computed in software to draw plane and the coordinate and/or the actual axial line in this mouth of pipe center of circle at mouth of pipe end face place of plane and/or the said mouth of pipe at the installation supporting surface place on the said main equipment to be installed; And set up the body coordinate system of said main equipment to be installed, the coordinate data of the measurement point that measures is converted under the body coordinate system of said main equipment to be installed and calculates the installation specification of said connecting pipe;
In the 6th step, the primary heat transport system in the nuclear island is processed and installed to said connecting pipe:
Installation specification according to the said connecting pipe that calculates; Said connecting pipe is processed; And after machining, said connecting pipe is placed predetermined installation site; Main equipment with said connecting pipe and installation in position welds together again, and makes said primary heat transport system conducting, primary heat transport system installation in the nuclear island.
Like this; During the primary heat transport system of those skilled in the art in nuclear island of nuclear power station is installed, only need time processing can make the actual specification of connecting pipe to be installed satisfy installation requirement, and then only need once lifting can connecting pipe to be installed be installed to its predetermined installation site; Improved the speed that the primary heat transport system in the nuclear island is installed; Reduce installation cost, and then improved the construction speed of nuclear power station, reduced the construction cost of nuclear power station.
Preferably, said three-dimensional commercial measurement software is Spatial Analyzer Survey Software.
Preferably, in second step of this method, on said installation supporting surface, lay the four measuring point.
Preferably, in second step of this method, said in along laying four measuring point on circumference or the outer circumference.
Preferably, in second step of this method, on the circumference of said location, lay the four measuring point.
Preferably, in the 3rd step of this method, choose four common points, and have certain height poor between any two.
Like this; Can improve measuring accuracy, and then improve the precision of the actual specification that calculates main equipment to be installed, to improve the machining precision of connecting pipe; And then the mouth of pipe group that improves the mouth of pipe and connecting pipe on the main equipment to be installed to the time group to the precision in gap; And then can adopt narrow gap auto welding connection technology that the connecting portion of main equipment in the nuclear island and connecting pipe is welded, and improve speed of welding and welding effect, shorten the set-up time of primary heat transport system in the nuclear island; Improve installation effectiveness, practice thrift installation cost.
Preferably, in the 4th step of this method, before said measurement point is measured, said measurement point is named according to the form of " project name-unit title-Devices to test identification number ".Like this, be convenient to write down measurement result, and can avoid data to obscure, improve writing speed.
Preferably; In the 5th step of this method; Plane with the inner installation supporting surface place of said pressure vessel is an XOY plane; Intersection point with the vertical projection of two body axis on this XOY plane that do not overlap on this pressure vessel is a true origin, and is the X axle with the vertical projection of a body axis on this XOY plane on this pressure vessel, sets up the body coordinate system of said pressure vessel; Actual axial line with said steam generator is the Z axle, is the X axle with the mouth of pipe center of circle of the heat pipe mouth of this steam generator perpendicular to the straight line at the straight-line segment place of this Z axle, sets up the body coordinate system of said steam generator; Plane with the inner installation supporting surface place of said main pump shell is an XOY plane, is the Z axle with the actual axial line of this main pump shell, sets up the body coordinate system of said main pump shell.
Preferably, in the 6th step of this method, adopt narrow gap auto welding connection technology that the connecting portion of said connecting pipe to be installed and said main equipment is welded.Like this, speed of welding is fast, and welding effect is good.
Description of drawings
Fig. 1 is the laying synoptic diagram of survey station point when among the present invention the pressure vessel that is in lying status being measured;
Fig. 2 is the location circumference on this steam generator and the laying synoptic diagram of the measurement point on the circumference of location when among the present invention steam generator being measured;
Fig. 3 is the cross-sectional schematic of main pump shell spatial structure to be installed among the present invention;
Fig. 4 is the laying synoptic diagram of the measurement point on this main pump shell housing when among the present invention the main pump shell being measured;
Fig. 5 is when the measurement point on the lining face of treating is measured among the present invention, and the target ball is positioned at the target ball groove on the seat of plane, and the master when the plane seat is positioned on the plane to be measured looks synoptic diagram;
Fig. 6 is when the measurement point on the lining face of treating is measured among the present invention, and the target ball is positioned at the target ball groove on the seat of plane, the schematic top plan view when the plane seat is positioned on the plane to be measured;
Fig. 7 be among the present invention when the interior measurement point on circumference on the nose end face to be measured is measured, the synoptic diagram when target ball and straight pin measuring seat are positioned on the mouth of pipe to be measured.
Embodiment
For shortening the installation period of primary heat transport system in the nuclear island of nuclear power station; Practice thrift installation cost; Those skilled in the art thinks after studying; In nuclear island is installed during primary heat transport system; Can carry out three-dimensional measurement to main equipment to be installed (like pressure vessel, steam generator, main pump shell) respectively earlier, and calculate the actual specification of each main equipment to be installed, the actual specification at the position that is connected with connecting pipe on the main equipment especially to be installed according to measurement result; Such as position, the mouth of pipe center of circle of the heat pipe mouth on the steam generator with respect to the actual axial line of this steam generator, and then the installation specification when calculating connecting pipe to be installed and can be installed between two main equipments according to the design specification of the main equipment of mark in the design and installation drawing of nuclear island inner structure and connecting pipe.Based on result of calculation tube connector to be installed is processed then, and lifted in the nuclear island main equipment to be installed and installation in position.After main equipment installation to be installed, the connecting pipe that processes is moved to predetermined installation site again, and the connecting portion of main equipment and connecting pipe is welded the main equipment that makes in the nuclear island be communicated with primary heat transport system installation in the nuclear island through connecting pipe.The concrete operations step is following:
The first step: main equipment to be installed is placed on the bracing or strutting arrangement so that it is measured reposefully.When concrete operations, main equipment to be installed was lain low on bracing or strutting arrangement, pressure vessel 1 as shown in fig. 1 promptly is in lying status, and main equipment to be installed is erected on the bracing or strutting arrangement.
Second step: confirm the installation position of measurement point and the quantity of the measurement point on this installation position, laid.
Laying four measurement points that do not overlap on the installation supporting surface on the main equipment to be installed to confirm the plane at the installation supporting surface place on this main equipment to be installed.Here said installation supporting surface refers to, and after with main equipment installation in position to be installed, is positioned at and is used on the outer wall of this main equipment to be installed supporting this main equipment to be installed to attach it to other equipment or structural supporting surface; Perhaps, be positioned at the inside of this main equipment to be installed, be used to support being installed on this main equipment to be installed or other the inner equipment or the supporting surface of structure.Certainly, also can three of layings or five or more measurement points that do not overlap on the supporting surface be installed.
At the interior coordinate on the mouth of pipe end face of the mouth of pipe that is connected with connecting pipe on the main equipment to be installed along the center of circle of laying plane that the mouth of pipe end face of four measurement points that do not overlap with the mouth of pipe confirming to be connected with connecting pipe on this main equipment to be installed belong to and this mouth of pipe on the circumference.Certainly, also can be on the mouth of pipe end face of the mouth of pipe that is connected with connecting pipe on the main equipment to be installed interior along laying three or five or more measurement points that do not overlap on the circumference.
When main equipment to be installed is pressure vessel; Because the pressure vessel body is provided with body axis, then on a body axis, lay at least one measurement point to obtain the not coordinate of the intersection point of two body axis on same straight line on this pressure vessel.
When main equipment to be installed is steam generator; Because there are two outstanding cylindrical bands at the two ends of steam generator, and are as shown in Figure 2, on the body surface of this steam generator; And get the location circumference of two circumference that do not overlap on the outstanding cylindrical band near its two ends as the actual axial line of confirming this steam generator; Wherein, be location circumference A, be location circumference B near the circumference of its right-hand member near the circumference of its left end.Certainly, these two location circumference both can all be positioned on the outstanding cylindrical band on this steam generator one end, also can lay respectively on the outstanding cylindrical band on these steam generator two ends.In addition, can also on the body surface on the outstanding cylindrical band on the steam generator, choose three perhaps more location circumference that do not overlap to confirm to treat the actual axial line of steam generator.Choose the peak a of location circumference A and location circumference B
1And b
1, minimum point a
2And b
2And two side intermediate point a of location circumference A
3, a
4Two side intermediate point b with location circumference B
3, b
4As the measurement point on the circumference of location, locate the center of circle A ' of circumference A and the three-dimensional coordinate of the center of circle B ' of location circumference B with definite, and then draw the actual axial line of this steam generator according to 2 definite straight lines.Certainly, can also choose three or five or more points that do not overlap are confirmed this steam generator as measurement point actual axial line in the location on the circumference.Interior on the mouth of pipe end face of the heat pipe mouth on the steam generator along laying the three-dimensional coordinate of four measuring point on circumference or the outer circumference with the mouth of pipe center of circle of definite this heat pipe mouth.Certainly, also can be on the mouth of pipe end face of heat pipe mouth interior along laying three or five or more measurement point three-dimensional coordinate on circumference or the outer circumference with the center of circle of confirming this mouth of pipe.
When main equipment to be installed is the main pump shell, shown in Fig. 3 and 4, lay four measurement points that do not overlap on the installation supporting surface C of water conservancy parts being used on this main pump shell to install, to confirm to install the plane at supporting surface C place.Because the machining precision of the suction choma D on this main pump shell is very high; Can be considered the standard annulus; And its collar extension end face and the plane parallel that supporting surface C place is installed, so interior on the collar extension end face that sucks choma D along laying the three-dimensional coordinate of four measuring point on circumference or the outer circumference with the center of circle D ' of definite its collar extension.Like this, making the resulting straight line L of perpendicular line by center of circle D ' to the plane that supporting surface C place is installed promptly is the actual axial line of this main pump shell.Certainly; Can also choose three or five on the supporting surface or more points that does not overlap confirm to install the plane that supporting surface belongs to installing; Interiorly confirm the center of circle of the collar extension of this suction choma what suck choma along choosing three or five or more points that does not overlap on circumference or the outer circumference, and then the actual axial line of definite this main pump shell.In addition, interior along choosing four measurement points that do not overlap on the circumference on the mouth of pipe end face of the cold mouth of pipe E on the main pump shell is with the three-dimensional coordinate of the center of circle E ' of the mouth of pipe of confirming this cold mouth of pipe E.Certainly, also can be on the mouth of pipe end face of the cold mouth of pipe of main pump shell to be installed interiorly confirm the three-dimensional coordinate in the center of circle of this mouth of pipe along choosing three or five or more measurement points that does not overlap on the circumference.
The 3rd step: lay survey station point and common point.
The survey station point is laid in measurement place at main equipment to be installed place, makes the laser tracking measurement system that is placed on the survey station point to measure all measurement points to be measured on the main equipment to be installed.Such as as shown in Figure 1, three survey station point A are set around pressure vessel 1
1, A
2And A
3, wherein, be positioned at survey station point A
1And A
3On laser tracking measurement system can measure along last measurement point being positioned at the mouth of pipe on the mouth of pipe on the pressure vessel 1 11, be positioned at survey station point A
2On laser tracking measurement system can measure the measurement point that install on the supporting surface 12 inside of pressure vessel 1.Certainly, the position of survey station point and quantity are based on all that measurement point position to be measured confirms.
In order to improve measuring accuracy; In the measurement place at main equipment to be installed to be measured place, choose three measurement points that do not overlap as common point so that two adjacent survey station points are interrelated, and laser tracking measurement system is positioned at any survey station point last time and all can observe at least one common point.Preferably, for improving measuring accuracy, different common points has certain height poor between any two.Certainly, four perhaps more points that do not overlap also can be set as common point in the measurement place of main equipment to be installed to be measured, and these common points are positioned at same plane.
The 4th step: the coordinate data of gathering the measurement point of being laid.
Open laser tracking measurement system earlier and make its self calibration, the three-dimensional commercial measurement software on operation simultaneously and the computing machine that laser tracking measurement system is connected, and on this three-dimensional commercial measurement software interface, add laser tracking measurement system.Then laser tracking measurement system is placed on the survey station point, cooperate the corresponding accessory of laser tracking measurement system that measurement point to be measured is measured again, and the coordinate data of all measurement points that will measure is transferred in the three-dimensional commercial measurement software.Preferably, through the RJ45 interface laser tracking measurement system and computing machine are linked together.In addition, when measuring, select for use laser tracker measurement point to be measured usually as laser tracking measurement system.
As illustrated in Figures 5 and 6; When measurement point to be measured is positioned on the plane; Earlier plane seat 2 is placed on the plane 3 at measurement point to be measured place; And the bottom surface of plane seat 2 and the plane 3 at measurement point to be measured place are fitted tightly, then target ball 4 is placed in the target ball groove on the plane seat 2, utilize laser tracker target ball 4 to be measured and drawn the coordinate data of the centre of sphere of target ball 4 again.Because the vertical range of target ball its centre of sphere seat bottom surface to the plane when being positioned at the target ball groove on the seat of plane is known, so, through calculating get final product the coordinate of the measurement point to be measured on the out-of-plane 3.When being laid with two or more measurement point at grade, only need adjusting the position of plane seat on this plane as required and get final product.Certainly, also can use and many plane seat is measured different measurement points respectively with the target ball.
When measurement point to be measured be positioned on the mouth of pipe end face on circumference the time; As shown in Figure 7; Earlier straight pin measuring seat 5 is placed on the mouth of pipe 6 ends, and makes side and the tangent applying of inwall of the mouth of pipe 6 of the right cylinder 51 of these straight pin measuring seat 5 bottoms, the bottom surface of the measuring seat 52 on top and the end face of the mouth of pipe 6 fit tightly; Then target ball 7 is placed in the target ball groove on the straight pin measuring seat 5, utilize laser tracker target ball 7 to be measured and drawn the coordinate data of the centre of sphere of target ball 7 again.Since the target ball when being positioned at the target ball groove on the straight pin measuring seat its centre of sphere to the lateral vertical side of the right cylinder 51 of the vertical range of the bottom surface of the measuring seat 52 on these straight pin measuring seat 2 tops and bottom apart from all known; So, through calculating the three-dimensional coordinate can draw in the mouth of pipe to be measured along the measurement point to be measured on the circumference.If when interior on the same mouth of pipe end face has a plurality of measurement point on circumference, only need the position of adjustment straight pin measuring seat on the mouth of pipe to be measured to get final product.Can certainly use and many straight pin measuring seat measured different measurement points respectively with the target ball.When measurement point to be measured is positioned on the outer circumference on the mouth of pipe end face; When the measurement point on the outer circumference on the collar extension end face that is positioned at the suction choma on the main pump shell is measured; Also use straight pin measuring seat and target ball to cooperate laser tracker to come this measurement point to be measured is measured; At this moment, the straight pin measuring seat is positioned at the collar extension end, and the cylindrical side of this straight pin measuring seat bottom with suck choma near the tangent applying of the outer wall of collar extension end; The bottom surface of the measuring seat on top and collar extension end face fit tightly, and the target ball is positioned at the target ball groove on the straight pin measuring seat.After using laser tracker to measure the sphere centre coordinate of target ball, can calculate the three-dimensional coordinate of measurement point to be measured.
In addition, when measurement point to be measured is single point, can adopt intelligent gauge head to cooperate laser tracker that this measurement point to be measured is measured.When the measurement point on the body axis that is denoted as 0 °, 90 °, 180 ° and 270 ° on the pressure vessel is measured, can adopt intelligent gauge head to cooperate laser tracker to measure.
Certainly,, can also before image data, name, different measurement points to be measured is distinguished measurement point to be measured for convenient record measurement data.Preferably, according to the form of " project name-unit title-Devices to test identification number " measurement point to be measured is named.Like this, the staff when record data, can the data that measure directly be recorded in its title after; Be convenient to the technician not on the same group data discern; Avoid data to obscure, and then avoid calculating misdata, improve the efficient that primary heat transport system is installed.
The 5th step: processing collected to each main equipment to be installed on the coordinate data of measurement point, and the principal body axes of setting up each main equipment to be installed is to obtain being used for connecting the installation specification of the connecting pipe of each main equipment to be installed.
The plane that the mouth of pipe end face that utilizes three-dimensional commercial measurement software to calculate the mouth of pipe that is connected with connecting pipe on plane and the main equipment to be installed at installation supporting surface place of main equipment to be installed according to the coordinate data that records belongs to; Set up the body coordinate system of main equipment to be installed; And the coordinate data that measures is converted under the body coordinate system of main equipment to be installed; So that the technician checks the actual specification of the main equipment to be installed that draws through three-dimensional commercial measurement computed in software; And then, calculate the installation specification of connecting pipe according to the installation site of each main equipment to be installed of mark and the relative position between them in the design and installation drawing of the actual specification of main equipment to be installed and nuclear island inner structure.Preferably; When calculating the installation specification of connecting pipe; Making its precision satisfy number of patent application is 200610121459.2; Denomination of invention is the narrow gap auto welding connection technology requirement of welding in the large posted sides pipeline narrow gap tungsten electrode noble gas protecting all-position automatic soldering method, to improve speed of welding and welding effect.
When the body coordinate system of build-up pressure container; Preferably; Plane with the inner installation supporting surface place of this pressure vessel is an XOY plane; With 0 ° on this pressure vessel body axis and 90 ° of intersection points with 270 ° the vertical projection of body axis on XOY plane with 180 ° is true origin, and is the X axle with 0 ° on this pressure vessel vertical projection of body axis on XOY plane with 180 °.Certainly, also can on XOY plane, be projected as the X axle with 270 ° body axis with 90 ° on this pressure vessel.
When setting up the body coordinate system of steam generator, preferably, be the Z axle with the actual axial line of this steam generator, be the X axle with the mouth of pipe center of circle of the heat pipe mouth of this steam generator perpendicular to the straight line at the straight-line segment place of Z axle.
When setting up the body coordinate system of main pump shell, preferably, be XOY plane with the plane at the inner installation supporting surface place of this main pump shell, be the Z axle with the actual axial line of this main pump shell.Further preferably, be X axle perpendicular to the straight line at the straight-line segment place of Z axle in the vertical projection of installing on the supporting surface with the mouth of pipe center of circle of the cold mouth of pipe on this main pump shell.
When setting up the body coordinate system of main equipment to be installed; After only needing under with the data-switching that records to this coordinate system; The technician can check the actual specification of the main equipment to be installed that calculates very easily, so calculate connecting pipe installation specification so that the processing of connecting pipe and install get final product.
Preferably, adopt Spatial Analyzer Survey Software collection and deal with data.Spatial Analyzer (SA) is the three-dimensional measurement analysis software that can trace to the source, can be simultaneously and many dissimilar measuring system communications, and can realize the analysis task of complicacy apace.SA makes the user utilize Portable Measurement Instrument (like laser tracker, Local GPS, portable type measuring arm, total powerstation, laser scanner or the like) to create easily, inspection and reverse engineer.SA provides succinct General Purpose Interface for each surveying instrument, and for example all types of laser trackers (Leica, FARO, SMX and API) have common user interface.If the user can use the laser tracker of Leica to measure, so also will use the instrument of FARO or API.SA also is a kind of software that can move many surveying instruments simultaneously, makes factory can keep the production line effective operation, and the influence of time is minimized.The image-context of SA allows the user to be written into cad model (for example CATIA, UG etc.) and with the STEP form (or form of other industrial standards) of iso standard, in this environment, carries out all measurements and analysis then, comprises GD&T.
The 6th step: the primary heat transport system in the nuclear island is processed and installed to connecting pipe to be installed.
, connecting pipe to be installed is processed earlier according to the installation specification of the connecting pipe that calculates so that the two ends of connecting pipe to be installed and the mouth of pipe on the main equipment organize to the time, organize less and precision is higher to the gap.Like this; Can make the actual specification of connecting pipe to be installed meet installation requirement through time processing; In nuclear island is installed, during primary heat transport system, only need once lifting can connecting pipe be installed between two main equipments, reduced processing and lifting number of times; Improve the installation effectiveness of primary heat transport system in the nuclear island, practiced thrift installation cost.Lift in the nuclear island main equipment to be installed and installation in position then, and after main equipment installation to be installed, the connecting pipe that processes is moved to predetermined installation site.Lifting to main equipment to be installed; Both can, connecting pipe to be installed carry out before being processed; Also can carry out man-hour in that connecting pipe to be installed is added; Certainly can also, connecting pipe to be installed carry out after machining, as long as can be with main equipment installation in position to be installed before connecting pipe to be installed is lifted.Again the connecting portion of main equipment and connecting pipe is welded each main equipment that makes in the nuclear island and be communicated with, make the primary heat transport system installation in the nuclear island through connecting pipe.Preferably, adopt narrow gap auto welding connection technology that the connecting portion of the mouth of pipe on connecting pipe and the main equipment is welded.Like this, not only welding effect is good, and speed of welding is fast; Can accomplish being connected of main equipment in connecting pipe and the nuclear island fast; Accomplish the installation of the primary heat transport system in the nuclear island, make the primary heat transport system conducting in the nuclear island, shorten the set-up time of primary heat transport system in the nuclear island; Improve installation effectiveness, reduce installation cost.
Claims (9)
1. the method that primary heat transport system in the nuclear island of nuclear power station is installed is characterized in that this installation method comprises the steps:
The first step is placed on main equipment to be installed on the bracing or strutting arrangement, and said main equipment is pressure vessel, steam generator or main pump shell;
In second step, confirm the installation position of measurement point and the quantity of the measurement point on said installation position, laid:
On the inner installation supporting surface of said pressure vessel, lay at least three measurement points that do not overlap to confirm the plane at said installation supporting surface place; Interior along laying the coordinate of at least three measurement points that do not overlap with the center of circle of the plane of confirming this mouth of pipe end face place and this mouth of pipe on the circumference on the mouth of pipe end face of the mouth of pipe that is connected with connecting pipe on the said pressure vessel laid at least one measurement point to obtain the not coordinate of the intersection point of two body axis on same straight line on this pressure vessel on a body axis on the said pressure vessel;
On the outside and inner installation supporting surface of said steam generator, lay at least three measurement points that do not overlap respectively to confirm the plane at said installation supporting surface place; Interior on the mouth of pipe end face of the mouth of pipe that is connected with connecting pipe on the said steam generator along laying the coordinate of at least three measurement points that do not overlap on the circumference with the center of circle of the plane of confirming this mouth of pipe end face place and this mouth of pipe; On the outstanding cylindrical band on the said steam generator, choose at least two axial line location circumference that do not overlap, and on the circumference of said location, lay at least three measurement points that do not overlap to confirm the actual axial line of this steam generator;
On the inner installation supporting surface of said main pump shell, lay at least three measurement points that do not overlap to confirm the plane at said installation supporting surface place; Interior along laying the coordinate of at least three measurement points that do not overlap on the circumference on the mouth of pipe end face of the mouth of pipe that is connected with connecting pipe on the said main pump shell with the center of circle of the plane of confirming this mouth of pipe end face place and this mouth of pipe, interior on the collar extension end face of the suction choma of said main pump shell along laying at least three measurement points that do not overlap on circumference or the outer circumference to confirm the actual axial line of this main pump shell;
In the 3rd step, lay survey station point and common point:
The survey station point is laid in measurement place at said main equipment to be installed place, and the laser tracking measurement system that is placed on the said survey station point can be measured all measurement points of laying; Choose at least three common points so that said survey station point is interrelated in the same plane in the measurement place at said main equipment to be installed place, and said laser tracking measurement system is positioned at any survey station point last time and all can measures said common point;
The 4th step, the coordinate data of gathering the measurement point of being laid:
Open said laser tracking measurement system earlier and make its self calibration, and the three-dimensional commercial measurement software on operation and the computing machine that said laser tracking measurement system is connected, and on the interface of this three-dimensional commercial measurement software, add said laser tracking measurement system; Then laser tracking measurement system is placed on the survey station point, cooperates the accessory of said laser tracking measurement system that said measurement point is measured again, and the coordinate data that measures is transferred in the said three-dimensional commercial measurement software;
The 5th step, the coordinate data of the measurement point that processing collected arrives, and set up the body coordinate system of said main equipment to be installed, calculate the installation specification of said connecting pipe:
Utilize said three-dimensional commercial measurement computed in software to draw the coordinate and/or the actual axial line in the center of circle of plane and this mouth of pipe at mouth of pipe end face place of plane and/or the said mouth of pipe at the installation supporting surface place on the said main equipment to be installed; And set up the body coordinate system of said main equipment to be installed, the coordinate data of the measurement point that measures is converted under the body coordinate system of said main equipment to be installed and calculates the installation specification of said connecting pipe;
In the 6th step, the primary heat transport system in the nuclear island is processed and installed to said connecting pipe:
Installation specification according to the said connecting pipe that calculates; Said connecting pipe is processed; And after machining, said connecting pipe is placed predetermined installation site; Main equipment with said connecting pipe and installation in position welds together again, and makes said primary heat transport system conducting, primary heat transport system installation in the nuclear island.
2. the method for primary heat transport system is characterized in that said three-dimensional commercial measurement software is Spatial Analyzer Survey Software in the installation nuclear island of nuclear power station according to claim 1.
3. the method for primary heat transport system is characterized in that in the installation nuclear island of nuclear power station according to claim 1 and 2, in second step of this method, on said installation supporting surface, lays the four measuring point.
4. based on the method for primary heat transport system in claim 1 or the 2 described installation nuclear island of nuclear power station, it is characterized in that, in second step of this method, said in along laying four measuring point on circumference or the outer circumference.
5. the method for primary heat transport system is characterized in that in the installation nuclear island of nuclear power station according to claim 1 and 2, in second step of this method, on the circumference of said location, lays the four measuring point.
6. the method for primary heat transport system is characterized in that in the installation nuclear island of nuclear power station according to claim 1 and 2, in the 3rd step of this method, chooses four common points, and has certain height poor between any two.
7. the method for primary heat transport system in the installation nuclear island of nuclear power station according to claim 1 and 2; It is characterized in that; In the 4th step of this method; Before said measurement point is measured, said measurement point is named according to the form of " project name-unit title-Devices to test identification number ".
8. the method for primary heat transport system is characterized in that in the installation nuclear island of nuclear power station according to claim 1 and 2, in the 5th step of this method,
Plane with the inner installation supporting surface place of said pressure vessel is an XOY plane; Intersection point with the vertical projection of two body axis on this XOY plane that do not overlap on this pressure vessel is a true origin; And the vertical projection of a body axis on this XOY plane with on this pressure vessel is the X axle, sets up the body coordinate system of said pressure vessel;
Actual axial line with said steam generator is the Z axle, is the X axle with the mouth of pipe center of circle of the heat pipe mouth of this steam generator perpendicular to the straight line at the straight-line segment place of this Z axle, sets up the body coordinate system of said steam generator;
Plane with the inner installation supporting surface place of said main pump shell is an XOY plane, is the Z axle with the actual axial line of this main pump shell, sets up the body coordinate system of said main pump shell.
9. the method for primary heat transport system is characterized in that in the installation nuclear island of nuclear power station according to claim 1 and 2, in the 6th step of this method, adopts narrow gap auto welding connection technology that the connecting portion of said connecting pipe to be installed and said main equipment is welded.
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