CN110534215B - Pipeline installation parallelism checking method - Google Patents
Pipeline installation parallelism checking method Download PDFInfo
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- CN110534215B CN110534215B CN201910719446.2A CN201910719446A CN110534215B CN 110534215 B CN110534215 B CN 110534215B CN 201910719446 A CN201910719446 A CN 201910719446A CN 110534215 B CN110534215 B CN 110534215B
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/017—Inspection or maintenance of pipe-lines or tubes in nuclear installations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a method for checking the parallelism of pipeline installation, which comprises the following steps: s1, manufacturing a pipeline installation sleeve; s2, manufacturing two circular pipeline inspection molds; setting the elevation and the known point of the back vision of the total station; s4, measuring the coordinate of the central point of the inner side of the sleeve; s5, calculating a deviation value of the casing; s6, adjusting the position and elevation of the sleeve; s7 retesting after welding and fixing; s8 repeating steps S4 to S7; s9, placing one end of the large pipeline at the support frame, and measuring the three-dimensional coordinate of the central point of the second detection mould; s10, calculating to obtain a deviation value of the pipeline main pipe; s11, adjusting the position and elevation of the large pipe of the pipeline; s12 retesting after welding and fixing; s13 repeats steps S9 to S12 for the second layer of pipes. The invention overcomes the defects of the prior art that the prior art needs to be prefabricated and reinforced in advance, the structure body is large, the steel bars are difficult to bind, the steel bars are easy to knock, and the like, and has flexible inspection and convenient measurement.
Description
Technical Field
The invention belongs to the technical field of civil engineering construction, and particularly relates to a method for checking the parallelism of pipeline installation.
Background
The reactor cavity ring wall of the nuclear reactor factory building is provided with eight groups of anti-thrust pull grooves, each group of anti-thrust pull grooves is formed by welding two sleeves with different pipe diameters arranged inside and outside, each sleeve is formed by welding two pipes, the requirements on the concentricity and the parallelism are high, the requirement on the concentricity and the parallelism is within 1mm, the upper layer and the lower layer of each group of anti-thrust pull grooves are respectively provided with a pipeline, the eight groups of anti-thrust pull grooves have 16 pipelines, the pipelines are divided into two specifications, and the pipe length is 1320mm and 1488 mm. At present, generally, in order to ensure concentricity and parallelism, the steel bar binding device is prefabricated and installed in a workshop, after the concentricity and the parallelism are qualified, a support is additionally arranged for fixing, the structure is huge, the steel bar binding device is installed before steel bar binding, the steel bar binding device needs to penetrate through a reinforcing structure body, the labor efficiency is low, and meanwhile, the reinforcing structure body is easy to touch, and the quality of detection work is influenced.
Disclosure of Invention
The invention provides a method for checking the parallelism of pipeline installation, which aims at overcoming the defects of the prior art that the prior method for checking the parallelism of the three-dimensional structure state of the complex space at the inner side and the outer side of a pipeline installed in a wall body needs to be prefabricated and reinforced in advance, the structure body is large, the steel bars are difficult to bind, the collision is easy, and the like, and the method is flexible in checking and convenient in measurement.
In order to achieve the purpose, the invention adopts the following technical scheme: a pipeline installation parallelism checking method comprises the following steps:
s1, manufacturing a pipeline installation sleeve, wherein the inner diameter of the sleeve is the same as the outer diameter of a small pipe of a pipeline to be installed;
s2, manufacturing two circular pipeline inspection dies, wherein the diameter of the first inspection die is the same as the outer diameter of the small pipeline to be installed, and the diameter of the second inspection die is the same as the inner diameter of the large pipeline to be installed; marking the central point positions of two checking molds;
s3, setting a total station to enable the instrument to look through the check point, look back at the known point, and set the actual coordinate and elevation of the instrument;
s4 inside of casing measurement: fixing the sleeve at the support frame, embedding the first inspection mould into the sleeve, and measuring the coordinate of the central point;
s5, calculating the deviation value of the casing: orientation deviation value Δ α ═- (X-X)0)×SINα+(Y-Y0)×COSα)×1000；
Height deviation value delta H is H-H0；
In the formula, X0、Y0Is the coordinate of the starting point in the pipeline direction, alpha is the difference between the angle of the connecting line between the starting point and the reactor core and the deflection angle of the starting point, and X, Y is the actual measurement coordinate; h is the actual measured elevation, H0Is the theoretical elevation;
s6, adjusting the position and elevation of the sleeve to enable the deviation value of the position and elevation of the sleeve to be within 1mm, and welding and fixing the sleeve on the support frame;
s7 re-testing whether the deviation of the position and the elevation of the sleeve is within 1mm after welding and fixing, if yes, continuing to S8:
s8 repeating the steps S4 to S7, installing a second layer of sleeves on a second layer of the support frame, enabling the position and elevation deviation of the second layer of sleeves to be within 1mm, and simultaneously meeting the requirements that the upper and lower layers of sleeves are parallel and the horizontal direction parallelism deviation of the two layers of sleeves is within 1 mm; welding and fixing the second sleeve on the support frame;
s9, installing one end of the small pipe in the sleeve, placing one end of the large pipe in the support frame, embedding the second inspection mold into the inner side of the large pipe, and measuring the three-dimensional coordinate of the central point of the second inspection mold;
s10, calculating the deviation value of the pipeline main pipe:
orientation deviation value Δ B ═- (X' -X)0)×SINα+(Y′-Y0)×COSα)×1000；
Elevation deviation value delta H ═ H' -H0；
In the formula, X0、Y0The coordinate of a starting point in the pipeline direction is shown, alpha is the difference between the angle of a connecting line between the starting point and the reactor core and the deflection angle of the starting point, and X 'and Y' are the coordinates of the center point of the second actually measured inspection mold; h' is the actual measured elevation of the large pipe, H0Is the theoretical elevation;
s11, adjusting the position and the elevation of the large pipeline to enable the deviation value of the position and the elevation of the large pipeline to be within 1mm, and welding and fixing the large pipeline on the support frame;
s12, after welding and fixing, retesting whether the deviation of the position and the elevation of the pipeline is within 1mm, and if so, continuing to S13;
s13, repeating the steps S9 to S12 on the pipeline of the second layer, and installing the pipeline large pipe of the second layer on the second layer of the support frame, so that the position and elevation deviation of the pipeline large pipe of the second layer are within 1mm, and the condition that the two layers of pipelines are parallel and the deviation of the parallelism of the horizontal direction of the two layers of pipelines is within 1mm is met; and welding and fixing the large pipeline pipe on the second layer on the mounting support frame.
In order to optimize the technical scheme, the specific measures adopted further comprise:
the pipeline to be installed is integrally formed by a small pipe and a large pipe which have different diameters along the length direction, the diameter of the small pipe is smaller than that of the large pipe, and the outer diameter of the small pipe is the same as the inner diameter of the large pipe.
The first inspection die and the second inspection die have the same diameter.
The upper layer and the lower layer of each thrust groove are respectively provided with a pipeline, each pipeline is formed by welding small pipes and large pipes with different pipe diameters, the support frame is provided with an upper layer and a lower layer, and the two pipelines are respectively fixed on the upper layer and the lower layer of the support frame.
In step S7, if the position of the bushing and the elevation deviation are not less than 1mm, S6 is performed.
The length of the sleeve is 10mm, and the length of the sleeve cannot be too long so as not to influence the rotation of the pipeline.
The thickness of the first inspection die and the thickness of the second inspection die are both 3 mm.
And handles are arranged on the first inspection die and the second inspection die and are used for handheld operation.
The invention has the beneficial effects that: the invention can not only carry out accurate detection according to actual conditions to obtain more accurate detection results, thereby providing reliable basis for adjusting the actual position when the upper stop push-pull groove of the reactor cavity ring wall is installed, but also adopts simple tools to assist in measurement, has convenient and fast operation, reliable inspection quality, convenient and flexible measurement, does not need to be prefabricated in a workshop in advance and reinforced, effectively meets the quality requirement of field construction while solving the problem of difficult inspection of the parallelism of the upper and lower pipelines, and greatly improves the detection efficiency compared with the original parallelism detection method.
Drawings
FIG. 1 is a schematic cross-sectional view of the position of the conduit of the present invention.
Fig. 2 is a schematic view of the structure of the pipe of the present invention.
Fig. 3 is a schematic plan view of the pipeline.
Fig. 4 is a schematic cross-sectional view of a pipe.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings.
The embodiment is characterized in that eight groups of anti-thrust pull grooves are arranged on a reactor cavity ring wall of a nuclear reactor plant of a nuclear power plant, the upper layer and the lower layer of each group of anti-thrust pull grooves are respectively provided with a pipeline, each pipeline is formed by welding small pipes and large pipes with different pipe diameters, the large pipes of the pipelines are positioned on the outer side of the ring wall and have high requirements on concentricity and parallelism, the concentricity requirement is that the deviation is within 1mm, the parallelism requirement is that the deviation is within 1mm, the eight groups of anti-thrust pull grooves have 16 pipelines in total, the pipeline length is 1320mm (pipes in figures 3, I, III, IV, V, VII and VIII) and 1488mm (pipes in figures 3, II and VI).
As shown in fig. 1-4, in fig. 3, Q1-Q8 are starting points in the pipeline direction, and coordinates can be calculated through the circle center and the radius; 1-32 are pipeline check points, and 33 is a total station. In fig. 4, 1(5, 9, 13, 17, 21, 25, 29) is an upper pipe inside checkpoint; 2(6, 10, 14, 18, 22, 26, 30) is an upper outside pipeline checkpoint; 3(7, 11, 15, 19, 23, 27, 31) is a lower pipe inside checkpoint; 4(8, 12, 16, 20, 24, 28, 32) are lower outside pipeline checkpoints. The method for checking the parallelism of the pipeline installation comprises the following steps:
s1, manufacturing a pipeline installation sleeve, wherein the length of the pipeline installation sleeve is 10mm, and the inner diameter of the sleeve is the same as the outer diameter of a small pipe of a pipeline to be installed;
s2 two circular pipeline inspection molds are made of plywood with the thickness of 3mm, and are light and convenient to process. The diameter of the first inspection die is the same as the outer diameter of a small pipe of the pipeline to be installed, and the diameter of the second inspection die is the same as the inner diameter of a large pipe of the pipeline to be installed; and marking the positions of the center points of the two checking molds. The pipeline to be installed is formed by welding a small pipe and a large pipe into a whole in the length direction, the diameter of the small pipe is smaller than that of the large pipe, the outer diameter of the small pipe is the same as the inner diameter of the large pipe, the first inspection die and the second inspection die are the same in diameter, namely the size, handles are arranged on the first inspection die and the second inspection die, and the pipeline to be installed is convenient to operate by hands.
S3, setting a total station to enable the instrument to look through the check point, look back at the known point, and set the actual coordinate and elevation of the instrument;
s4 inside of casing measurement: the support frame has upper and lower two-layer, and two pipelines are fixed in the upper strata and the lower floor of support frame respectively. Fixing the sleeve on one end of the first layer of the support frame, embedding a first check mould into the sleeve, and measuring the coordinates of the central point (X1706.4722, Y563.6490, H1.4978);
s5, calculating the deviation value between the coordinate measurement value of the central point of the casing and the theoretical value:
deviation value of orientation
ΔB＝(-(X-X0)×SINα+(Y-Y0)×COSα)×1000＝(-(1706.4722-17046.4203)×SIN272.5°+(563.6490-566.3)×COS272.5°)×1000＝2.5mm；
The elevation deviation value delta H is H-H0 is 1.4978-1.500 is-0.0022 m is-2.2 mm;
in the formula, X0、Y0As a starting point coordinate, X, of the direction of the pipe0＝1704.9+2.15*COS315°＝1706.4203；Y0566.3+2.15 SIN315 ° -564.7797; alpha is the difference between the angle of the connecting line between the starting point and the reactor core and the starting point deflection angle, namely 315-42.5-272.5 degrees, and X, Y is an actual measurement coordinate; h is the actual measured elevation, H0Is the theoretical elevation;
s6, because the azimuth deviation value and the elevation deviation value are not within 1mm of the error range, adjusting the position and the elevation of the sleeve, measuring the coordinates (X1706.4700, Y563.6490 and H1.5001) again, and calculating the coordinates as the azimuth deviation value
ΔB＝(-(X-X0)×SINα+(Y-Y0)×COSα)×1000＝(-(1706.4700-17046.4203)×SIN272.5°+(563.6497-566.3)×COS272.5°)×1000＝0.5mm；
The elevation deviation value delta H is H-H0, 1.5001-1.500, 0.0001m, 0.1 mm;
at the moment, the deviation values of the position and the elevation of the sleeve are within 1mm, and the sleeve is welded and fixed on the support frame;
s7, after welding and fixing, retesting whether the deviation of the position and the elevation of the sleeve is within 1mm, and if so, continuing to S8; if not, cutting the welding seam to adjust until the requirement is met;
s8 repeating the steps S4 to S7, installing sleeves on the second layer of the support frame, enabling the position and elevation deviation of the sleeves on the second layer to be within 1mm, and simultaneously meeting the requirements that the sleeves on the upper layer and the lower layer are parallel and the horizontal direction parallelism deviation of the sleeves on the two layers is within 1 mm; welding and fixing a second layer of sleeve on a second layer of the support frame;
s9, installing one end of the small pipe in the sleeve, placing one end of the large pipe at the other end of the support frame, embedding a second inspection mold into the inner side of the large pipe, and measuring the three-dimensional coordinate of the central point of the second inspection mold; measuring the coordinates of the center point (X1706.5365, Y562.1728, H1.4988);
s10, calculating the deviation value of the pipeline main pipe:
orientation deviation value Δ B ═- (X' -X)0)×SINα+(Y′-Y0)×COSα)×1000＝(-(1706.5365-17046.4203)×SIN272.5°+(562.1728-566.3)×COS272.5°)×1000＝2.4mm；
Elevation deviation value delta H ═ H' -H0＝1.4988-1.500＝-0.0012m＝-1.2mm；
S11, because the azimuth deviation value and the elevation deviation value are not within 1mm of the error range, adjusting the position and the elevation of the pipeline, measuring the coordinates (X1706.5337, Y562.1722 and H1.5001) again, and calculating the coordinates as the azimuth deviation value
ΔB＝(-(X-X0)×SINα+(Y-Y0)×COSα)×1000＝(-(1706.5337-17046.4203)×SIN272.5°+(562.1722-566.3)×COS272.5°)×1000＝-0.4mm；
Welding and fixing the pipeline large pipe on the support frame, wherein the elevation deviation value delta H is H-H0, 1.5004-1.500, 0.0004m is 0.4mm, and the azimuth and elevation deviation values of the pipeline large pipe are within 1 mm;
s12, after welding and fixing, retesting whether the deviation of the position and the elevation of the pipeline is within 1mm, and if so, continuing to S13;
s13, repeating the steps S9 to S12 for the second layer of pipelines, installing one end of a second layer of small pipelines into a second layer of sleeve, installing a second layer of large pipelines into a second layer of supporting frame, embedding a second detection mould into the inner side of the large pipelines, and measuring the three-dimensional coordinate of the central point of the second detection mould; the position and elevation deviation of the large pipe of the second layer of pipeline is within 1mm, and the condition that the two layers of pipelines are parallel and the deviation of the parallelism of the two layers of pipelines in the horizontal direction is within 1mm is met; and after the deviation condition is met, the pipeline large pipe on the second layer is welded and fixed on the mounting support frame. At the moment, the pipelines of the upper layer and the lower layer of the support frame are fixed.
The examination results are shown in Table 1:
TABLE 1
Repeated practice proves that the method of the embodiment effectively solves the problem of checking the parallelism of the pipelines and has the following remarkable advantages:
1. the on-site installation and measurement are carried out according to the on-site actual condition, the prefabrication in a workshop is not needed, the large size caused by reinforcement and the increased difficulty in binding the reinforcing steel bars are avoided, and the positioning efficiency and the comprehensiveness are improved;
2. the station can be erected arbitrarily according to the general conditions and the inspection elements, so that the occupation of a construction working face is avoided, the construction working face can be performed in parallel with other procedures, and the optimization of the construction progress is facilitated;
3. the problem of difficulty in checking the position and the size of a three-dimensional complex structure with the pipeline parallelism is effectively solved, and the method is flexible and convenient to apply.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (8)
1. A pipeline installation parallelism checking method is characterized by comprising the following steps:
s1, manufacturing a pipeline installation sleeve, wherein the inner diameter of the sleeve is the same as the outer diameter of a small pipe of a pipeline to be installed;
s2, manufacturing two circular pipeline inspection dies, wherein the diameter of the first inspection die is the same as the outer diameter of the small pipeline to be installed, and the diameter of the second inspection die is the same as the inner diameter of the large pipeline to be installed; marking the central point positions of two checking molds;
s3, setting a total station to enable the instrument to look through the check point, look back at the known point, and set the actual coordinate and elevation of the instrument;
s4 inside of casing measurement: fixing the sleeve at the support frame, embedding the first inspection mould into the sleeve, and measuring the coordinate of the central point;
s5, calculating the deviation value of the casing:
azimuth deviation value Δ B ═- (X-X)0)×SINα+(Y-Y0)×COSα)×1000；
Height deviation value delta H is H-H0；
In the formula, X0、Y0Is the coordinate of the starting point in the pipeline direction, alpha is the difference between the angle of the connecting line between the starting point and the reactor core and the angle of the starting point deflection, and X, Y is the coordinate of the actually measured center point of the first inspection mold; h is the actual measured elevation, H0Is the theoretical elevation;
s6, adjusting the position and elevation of the sleeve to enable the deviation value of the position and elevation of the sleeve to be within 1mm, and welding and fixing the sleeve on the support frame;
s7, after welding and fixing, retesting whether the deviation of the position and the elevation of the sleeve is within 1mm, and if so, continuing to S8;
s8 repeating the steps S4 to S7, installing a second layer of sleeves on a second layer of the support frame, enabling the position and elevation deviation of the second layer of sleeves to be within 1mm, and simultaneously meeting the requirements that the upper and lower layers of sleeves are parallel and the horizontal direction parallelism deviation of the two layers of sleeves is within 1 mm; welding and fixing the second layer of sleeve on the support frame;
s9, installing one end of the small pipe in the sleeve, placing one end of the large pipe in the support frame, embedding the second inspection mold into the inner side of the large pipe, and measuring the three-dimensional coordinate of the central point of the second inspection mold;
s10, calculating the deviation value of the pipeline main pipe:
orientation deviation value Δ B ═- (X' -X)0)×SINα+(Y′-Y0)×COSα)×1000；
Elevation deviation value delta H ═ H' -H0；
In the formula, X0、Y0The coordinate of a starting point in the pipeline direction is shown, alpha is the difference between the angle of a connecting line between the starting point and the reactor core and the deflection angle of the starting point, and X 'and Y' are the coordinates of the center point of the second actually measured inspection mold; h' is the actual measured elevation of the large pipe, H0Is the theoretical elevation;
s11, adjusting the position and the elevation of the large pipeline to enable the deviation value of the position and the elevation of the large pipeline to be within 1mm, and welding and fixing the large pipeline on the support frame;
s12, after welding and fixing, retesting whether the deviation of the position and the elevation of the pipeline is within 1mm, and if so, continuing to S13;
s13, repeating the steps S9 to S12 on the pipeline of the second layer, and installing the pipeline large pipe of the second layer on the second layer of the support frame, so that the position and elevation deviation of the pipeline large pipe of the second layer are within 1mm, and the condition that the two layers of pipelines are parallel and the deviation of the parallelism of the horizontal direction of the two layers of pipelines is within 1mm is met; and welding and fixing the large pipeline pipe on the second layer on the mounting support frame.
2. The pipe installation parallelism inspection method according to claim 1, wherein the pipe to be installed is integrally formed in a length direction by a small pipe and a large pipe having different diameters, the small pipe having a smaller diameter than the large pipe, and the small pipe having the same outer diameter as the large pipe inner diameter.
3. The pipe installation parallelism inspection method according to claim 1, wherein the first inspection die and the second inspection die have the same diameter.
4. The method for checking the parallelism of installation of pipelines according to claim 1, wherein each thrust groove has a pipeline on its upper and lower layers, each pipeline is composed of a small pipe and a large pipe welded together, the supporting frame has an upper and lower layer, and the two pipelines are fixed on the upper and lower layers of the supporting frame respectively.
5. The pipe installation parallelism inspection method according to claim 1, wherein in step S7, if the position and elevation deviation of the bushing are not less than 1mm, S6 is performed.
6. The pipe installation parallelism inspection method of claim 1, wherein the length of the sleeve is 10mm, and the sleeve length cannot be too long to affect pipe rotation.
7. The pipe installation parallelism inspection method according to claim 1, wherein the first inspection die and the second inspection die are each 3mm in thickness.
8. The pipe installation parallelism inspection method according to claim 1, wherein a handle is provided on each of the first inspection die and the second inspection die for hand-held operation.
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| CN114563982B (en) * | 2022-01-24 | 2023-05-09 | 中铁九桥工程有限公司 | Control method for movement track of mobile equipment on circular tube |
| CN116255951B (en) * | 2023-03-14 | 2024-04-26 | 广东才泓工程管理有限公司 | Reinforcing bar on-spot detector for engineering management |
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