CN114645550A - Mounting and positioning method for embedded part of main pump evaporator - Google Patents
Mounting and positioning method for embedded part of main pump evaporator Download PDFInfo
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- CN114645550A CN114645550A CN202210328012.1A CN202210328012A CN114645550A CN 114645550 A CN114645550 A CN 114645550A CN 202210328012 A CN202210328012 A CN 202210328012A CN 114645550 A CN114645550 A CN 114645550A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 77
- 239000010959 steel Substances 0.000 claims abstract description 77
- 238000004873 anchoring Methods 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims description 11
- 238000004088 simulation Methods 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000007689 inspection Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/15—Correlation function computation including computation of convolution operations
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
Abstract
The invention discloses a main pump evaporator embedded part installation and positioning method which comprises the steps of bottom plate steel bar position internal adjustment, adjustment of steel bar positions which conflict with embedded part anchoring steel bars, lofting of main pump evaporator embedded part anchoring steel bar positions, lofting of bottom plate steel bar positions, acceptance check of steel bar binding, adjustment of main pump evaporator embedded part supporting elevation, primary positioning of a main pump evaporator embedded part, primary adjustment of an embedded part position, accurate adjustment of an embedded part elevation and accurate adjustment of an embedded part position. By adopting the mounting method, the one-time mounting precision and efficiency of the high-precision embedded part are improved, the manual consumption caused by rework due to the fact that the embedded part is not mounted in place due to the position obstacle of the steel bar is reduced, the embedded part can be rapidly and accurately mounted in place, the construction efficiency is improved, and greater economic benefits and social benefits are created.
Description
Technical Field
The invention belongs to the technical field of civil engineering construction, relates to an embedded part installing and positioning method, and particularly relates to an embedded part installing and positioning method for a main pump evaporator.
Background
The nuclear main pump of a nuclear reactor plant is a pump for driving coolant to circulate in an RCP (reactor coolant system) system in a nuclear island primary circuit system. The main pump is positioned at the heart of the nuclear island and used for pumping hot water into the evaporator to convert heat energy, and is the key for controlling water circulation in nuclear power operation, the weight of the embedded part is 644kg, and each steam generator is provided with one main pump. The embedded part construction quality requirement of the main pump evaporator is high, and the embedded part construction method is a foundation guarantee for key equipment of the nuclear power station. In order to ensure safety, the foundation of the main pump evaporator requires high precision, and the foundation bottom plate requires high thickness due to safety performance, the diameter of the steel bar is large, the arrangement is dense, and the embedded part anchoring bar collides with the foundation steel bar, so that the embedded part cannot be in place, and the installation precision is influenced. The existing main pump evaporator embedded part installation has the problems of low measurement precision, influence on measurement quality, work efficiency and the like due to steel bar construction obstacle.
Disclosure of Invention
The invention provides a mounting and positioning method for embedded parts of a main pump evaporator, which optimizes the project progress, has stable and reliable measuring working quality, flexible inspection and convenient measurement and overcomes the defects of the prior art.
In order to achieve the purpose, the invention provides a mounting and positioning method for embedded parts of a main pump evaporator, which is characterized in that: the method comprises the following steps:
firstly, controlling line positioning of embedded parts (namely a main pump embedded part and an evaporator embedded part), and lofting out the position of an embedded part anchoring steel bar;
secondly, performing drawing simulation analysis on the position conflict part between the steel bar arrangement and the anchoring steel bar, optimizing and adjusting the collision part, and blanking the steel bar according to the optimized and adjusted scheme;
thirdly, performing site steel bar position lofting according to the optimized adjustment scheme, performing steel bar binding according to a position line, and simultaneously checking the vertical surface degrees of the upper and lower steel bars;
fourthly, lofting out an embedded part control line on a steel bar surface layer after the steel bar binding meets the requirements;
fifthly, erecting support angle steel at four corners of the embedded part, measuring the elevation of the support angle steel by using a precision level gauge, wherein the elevation is based on the top elevation of the embedded part-the thickness of the embedded part-1 mm, and the part lower than the elevation (namely the elevation reference) is respectively padded by using a gasket;
sixthly, fixedly pulling the support angle steel by using a counter-pulling screw rod respectively to form a whole;
seventhly, hoisting the embedded part to the support angle steel and roughly aligning;
eighthly, detecting the elevation of the surface of the embedded part, adding a steel gasket if the elevation is lower than the elevation requirement, and adjusting the position after the requirement is met;
ninth, a detection tool is arranged, angle steel is adopted, the length of the angle steel is equal to the width of the embedded part, and a reflection target is arranged in the middle of the angle steel;
tenth, arranging the total station on the embedded part opposite to the adjusting embedded part, and after measuring the position coordinates of the total station, arranging the total station according to the coordinates;
step ten, aligning the detection tool with the edge of the embedded part, and measuring the coordinates (X, Y) of the reflection target;
step ten, calculating a deviation value:
δX＝(X-X0)COSα+(Y-Y0)SINα
δY＝-(X-X0)SINα+(Y-Y0)COSα
X0、Y0detecting the coordinates of the theoretical center of the embedded part; alpha is the central rotation angle of the main pump/steam generator and the reactor;
and if the deviation is larger than the tolerance requirement, performing embedded part adjustment, and repeating the eleventh step and the twelfth step after the adjustment until the requirement is met. All edges of the embedded part are detected and calculated according to the eleventh step and the twelfth step so as to meet the requirements.
Further, the invention provides a main pump evaporator embedded part installation and positioning method, which can also have the following characteristics: in the second step, the adjusting method can be suitable for checking and adjusting the position of the embedded part which is not orthogonal to the building axis.
Further, the invention provides a main pump evaporator embedded part installation and positioning method, which can also have the following characteristics: wherein, to burying a positional deviation, only allow to keep away from the reactor center and incline outward, avoid the concrete after shrink the influence.
Further, the invention provides a mounting and positioning method for embedded parts of a main pump evaporator, which can also have the following characteristics: wherein the tolerance of the deviation is required to be 2 mm.
Further, the invention provides a main pump evaporator embedded part installation and positioning method, which can also have the following characteristics: and in the ninth step, the angle steel is 30 multiplied by 3 angle steel, and the size of the reflection target is 30 multiplied by 30 mm.
Further, the invention provides a main pump evaporator embedded part installation and positioning method, which can also have the following characteristics: and fifthly, respectively arranging parts lower than the elevation by using gaskets until the error is within 0.3 mm.
The invention has the beneficial effects that: the invention provides a mounting and positioning method for a main pump evaporator embedded part, and relates to a position inspection method for a nuclear power bottom plate with dense steel bars. The method comprises the following steps of adjusting the position of a bottom plate steel bar in-situ, adjusting the position of the steel bar which conflicts with an embedded part anchoring steel bar, lofting the position of the embedded part anchoring steel bar of a main pump evaporator, lofting the position of the bottom plate steel bar, checking and accepting the binding of the steel bar to be qualified, adjusting the embedded part supporting elevation of the main pump evaporator, preliminarily positioning the embedded part of the main pump evaporator, preliminarily adjusting the position of the embedded part, accurately adjusting the elevation of the embedded part, and accurately adjusting the position of the embedded part.
The method has the advantages that firstly, the collision reinforcing steel bars are optimized and adjusted, so that the condition that barriers are formed after the reinforcing steel bars are bound and embedded parts cannot be in place is avoided, and further rework is generated, so that the problem of construction period benefit is caused, the quality is influenced and the like; through the arrangement of the detection tool, the inaccuracy of the center point position of the embedded part is avoided, the embedded part on the opposite side is not adjusted and measured through instrument erection, the measurement is nearby, and the precision is improved; the coordinates are measured and calculated, so that error judgment is facilitated, the working efficiency and precision are improved, and meanwhile, an accurate detection result can be obtained, so that a reliable basis is provided for adjustment of the actual position of the embedded part; and the on-site measurement control point can be preferably selected, a central point survey station is not needed, the operation is convenient and rapid, the inspection quality is reliable, the measurement is convenient and flexible, the labor efficiency is improved, the quality requirement on-site construction is effectively met while the problem that the installation, adjustment and inspection of the evaporator of the main pump are difficult is solved, and compared with the original detection method, the detection efficiency is greatly improved.
Drawings
FIG. 1 is a view of the arrangement of the main pump evaporator insert, wherein 1 is the evaporator insert, 2 is the main pump insert, 3 is the floor base, and 4 is the basin;
FIG. 2 is a main pump evaporator embedded position reinforcing bar layout diagram;
FIG. 3 is a steel bar layout diagram after the embedded part position of the main pump evaporator is optimized;
FIG. 4 is a schematic view of the embedded part support frame, wherein 5 is a support angle steel, 6 is a drawing screw, 7 is a support embedded part base, and 8 is a drawing hole;
fig. 5 is a schematic view of the inspection tool, where 9 is 30 × 3 angle steel and 10 is a reflection target.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
The embodiment provides a main pump evaporator embedded part mounting and positioning method.
As shown in fig. 1, in this embodiment, there are 2 groups of main pump evaporator embedded parts, which are respectively located on a bottom plate of-2.60 m of a nuclear reactor, and are symmetrically distributed, forming 22.52 ° and 18.11 ° with the central axis of the reactor, and each group of the main pump embedded parts comprises 4 blocks and 3 blocks of the evaporator embedded parts, and the steel bars of the bottom plate are arranged in three layers, circumferentially and radially, from top to bottom, for Φ 32, and each embedded part has 16 anchoring steel bars, and the anchoring steel bars are Φ 32.
The mounting and positioning method for the embedded part of the main pump evaporator comprises the following steps:
firstly, positioning control lines of embedded parts (namely main pump embedded parts and evaporator embedded parts), releasing 22.52-degree axial lines of a main pump, 18.11-degree axial lines of a steam generator and the control lines vertical to a direction line, and releasing the position of an anchoring steel bar of the embedded parts;
secondly, performing drawing simulation analysis on the position conflict part of the steel bar arrangement and the anchoring steel bar, optimizing and adjusting the collision part, and blanking the steel bar according to the optimized and adjusted scheme, wherein the steps before and after optimization are shown in FIGS. 2 and 3; the adjusting method can be suitable for checking and adjusting the position of the embedded part which is not orthogonal to the building axis;
thirdly, performing site steel bar position lofting according to the optimized adjustment scheme, performing steel bar binding according to a position line, and simultaneously checking the vertical surface degree of the upper and lower steel bars;
fourthly, after the steel bar binding meets the requirements, lofting an embedded part control line on a steel bar surface layer;
fifthly, erecting support angle steel at four corners of the embedded part, measuring the elevation of the support angle steel by using a precision level gauge, wherein the elevation is based on the top elevation of the embedded part-the thickness of the embedded part-1 mm, and respectively setting parts lower than the elevation (namely elevation reference) by using gaskets until the error is within 0.3 mm;
sixthly, fixedly pulling the support angle steels by using opposite-pulling screw rods respectively to form a whole, as shown in figure 4;
seventhly, hoisting the embedded part to the supporting angle and roughly aligning;
eighthly, detecting the elevation of the surface of the embedded part, and if the elevation is lower than the elevation requirement, adding a steel gasket, generally taking negative deviation as a principle, and adjusting the position after the requirement is met by 1 mm;
ninth, manufacturing a detection tool, namely adopting 30 multiplied by 3 angle steel, wherein the length of the angle steel is equal to the width 930mm of the embedded part, and a 30mm reflection target is arranged in the middle of the angle steel;
tenth, arranging the total station on the embedded part opposite to the adjusting embedded part, and erecting the total station according to the coordinate setting after measuring the position coordinate of the total station;
step eleven, aligning the detection tool with the edge of the embedded part, and measuring the coordinate of the reflection target to be (1695.5348,560.4949);
step ten, calculating a deviation value:
δX＝(1695.5348-1695.3640)COS(202.52°)+(560.4949-560.9107)SIN(202.52°)＝0.0015
δY＝-(1695.5348-1695.3640)SIN(202.52°)+(560.4949-560.9107)COS(202.52°)＝0.4495
X0、Y0for detecting the theoretical center coordinates of the embedded part (1695.3640, 560.9107); alpha is main pump/steamThe rotation angle between the generator and the center of the reactor is set.
And if the deviation is larger than the tolerance requirement, performing embedded part adjustment, and repeating the eleventh step and the twelfth step after the adjustment until the requirement is met. And the position deviation of the embedded part is only allowed to be far away from the center of the reactor and is deviated outwards, so that the influence of the post-shrinkage of the concrete is avoided. The deviation of 0.0015 meets the requirement of 2mm of deviation and simultaneously meets the requirement of deviation.
The other point is also measured as reflection target coordinates (1695.1943,561.3203);
calculating a deviation value:
δX＝(1695.1943-1695.3640)COS(202.52°)+(561.3203-560.9107)SIN(202.52°)＝0.0011
δY＝-(1695.1943-1695.3640)SIN(202.52°)+(561.3203-560.9107)COS(202.52°)＝-0.4439
the deviation of 0.0011 meets the requirement of 2mm of deviation and simultaneously meets the requirement of deviation.
Vertical direction point location reflection target coordinates (1695.7413,561.0658);
calculating a deviation value:
δX＝(1695.7413-1695.3640)COS(202.52°)+(561.0658-560.9107)SIN(202.52°)＝-0.4079
δY＝-(1695.7413-1695.3640)SIN(202.52°)+(561.0658-560.9107)COS(202.52°)＝0.0012
the deviation of 0.0012 satisfies the requirement of 2mm, and simultaneously satisfies the requirement of deviation outward deviation.
Reflecting the target coordinates (1694.9545,560.7390) at another point in the vertical direction;
calculating a deviation value:
δX＝(1694.9545-1695.3640)COS(202.52°)+(560.7390-560.9107)SIN(202.52°)＝0.4440
δY＝-(1694.9545-1695.3640)SIN(202.52°)+(560.7390-560.9107)COS(202.52°)＝0.0018
the deviation of 0.0018 meets the requirement of 2mm of deviation and simultaneously meets the requirement of deviation.
Furthermore, if the embedded part needs to be adjusted, the embedded part needs to be detected again after being qualified, so that mutual influence is avoided.
Repeated practice proves that the method of the embodiment effectively solves the problem of embedded part inspection of the main pump (evaporator), and has the following remarkable advantages:
1. the method is scientific, innovative and practical, and installation work efficiency is greatly improved while installation quality is guaranteed by combining field construction conditions and a measuring method for manufacturing a leveling inspection tool in conflict with the anchoring ribs by the industry.
2. When the installation accuracy of the embedded part is ensured, the detection tool reduces the investment of personnel and measuring equipment, and the purposes of cost reduction and efficiency improvement are achieved.
3. According to the actual situation of the site, the sequence of elevation adjustment and position adjustment is carried out first, so that repeated reworking can be effectively reduced, secondary operation is avoided, the labor intensity and the workload are reduced, and the positioning efficiency and the comprehensiveness are improved;
4. the inspection device effectively solves the inspection problem of the radial and azimuth positions of the high-precision embedded part, and is flexible and convenient to apply.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by replacing or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (6)
1. A main pump evaporator embedded part installing and positioning method is characterized in that:
the method comprises the following steps:
firstly, positioning an embedded part control line, and lofting the position of an embedded part anchoring steel bar;
secondly, performing drawing simulation analysis on the position conflict part between the steel bar arrangement and the anchoring steel bar, optimizing and adjusting the collision part, and blanking the steel bar according to the optimized and adjusted scheme;
thirdly, performing site steel bar position lofting according to the optimized adjustment scheme, performing steel bar binding according to a position line, and simultaneously checking the vertical surface degree of the upper and lower steel bars;
fourthly, after the steel bar binding meets the requirements, lofting an embedded part control line on a steel bar surface layer;
fifthly, erecting support angle steel at four corners of the embedded part, measuring the elevation of the support angle steel, wherein the elevation is based on the elevation of the top surface of the embedded part-the thickness of the embedded part-1 mm, and respectively setting parts lower than the elevation by using gaskets;
sixthly, fixedly pulling the support angle steel by using a counter-pulling screw respectively to form a whole;
seventhly, hoisting the embedded part to the support angle steel, and roughly aligning;
eighthly, detecting the elevation of the surface of the embedded part, adding a steel gasket if the elevation is lower than the elevation requirement, and adjusting the position after the requirement is met;
ninth, a detection tool is arranged, angle steel is adopted, the length of the angle steel is equal to the width of the embedded part, and a reflection target is arranged in the middle of the angle steel;
tenth, arranging the total station on the embedded part opposite to the adjusting embedded part, and after measuring the position coordinates of the total station, arranging the total station according to the coordinates;
step eleven, aligning the detection tool with the edge of the embedded part, and measuring the coordinates (X, Y) of the reflection target;
step ten, calculating a deviation value:
δX＝(X-X0)COSα+(Y-Y0)SINα
δY＝-(X-X0)SINα+(Y-Y0)COSα
X0、Y0detecting the coordinates of the theoretical center of the embedded part; alpha is the central rotation angle of the main pump/steam generator and the reactor;
and if the deviation is larger than the tolerance requirement, performing embedded part adjustment, and repeating the eleventh step and the twelfth step after the adjustment until the requirement is met.
2. The method for installing and positioning the embedded parts of the evaporator of the main pump as claimed in claim 1, wherein:
in the second step, the adjusting method can be suitable for checking and adjusting the position of the embedded part which is not orthogonal to the building axis.
3. The method for installing and positioning the embedded parts of the evaporator of the main pump as claimed in claim 1, wherein:
wherein, to burying a position deviation, only allow to keep away from reactor center and incline outward, avoid the influence of concrete after shrink.
4. The main pump evaporator insert mounting and positioning method as recited in claim 1, wherein:
wherein the tolerance of the deviation is required to be 2 mm.
5. The method for installing and positioning the embedded parts of the evaporator of the main pump as claimed in claim 1, wherein:
and in the ninth step, the angle steel is 30 multiplied by 3 angle steel, and the size of the reflection target is 30 multiplied by 30 mm.
6. The main pump evaporator insert mounting and positioning method as recited in claim 1, wherein:
and fifthly, respectively arranging parts lower than the elevation by using gaskets until the error is within 0.3 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210328012.1A CN114645550A (en) | 2022-03-31 | 2022-03-31 | Mounting and positioning method for embedded part of main pump evaporator |
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2022
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