CN114179994B - Ship building piping installation accuracy control method - Google Patents
Ship building piping installation accuracy control method Download PDFInfo
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- CN114179994B CN114179994B CN202111311905.7A CN202111311905A CN114179994B CN 114179994 B CN114179994 B CN 114179994B CN 202111311905 A CN202111311905 A CN 202111311905A CN 114179994 B CN114179994 B CN 114179994B
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- 238000009434 installation Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 22
- 238000013461 design Methods 0.000 claims abstract description 10
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 238000004364 calculation method Methods 0.000 claims abstract description 8
- 230000011218 segmentation Effects 0.000 claims abstract description 8
- 238000004458 analytical method Methods 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 6
- 238000004088 simulation Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 abstract description 11
- 230000008569 process Effects 0.000 description 5
- 238000012937 correction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/10—Building or assembling vessels from prefabricated hull blocks, i.e. complete hull cross-sections
Abstract
The invention discloses a method for controlling the installation precision of a ship building pipe system, which comprises the following steps: step one, building a ship section according to a drawing and a design standard; calculating the theoretical size of the folding pipe according to the design standard; step three, performing three-dimensional measurement and analysis on the pre-installation precision of the ship pipeline according to the sectional building standard; calculating the manufacturing size of the folded pipe according to the three-dimensional measurement data of the pipe installation precision; calculating the manufacturing precision of the pipe according to the actual size of the folded pipe; step six, pre-burying the manufactured folding pipe in a segmentation stage; step seven, carrying out segment total group loading and carrying out precision calculation; and step eight, installing the folding pipe. The folding pipe is converted into a finished product from the existing calibration, so that the waiting of the pipe fitting at the later stage is avoided, the simultaneous butt joint of the pipe and the segmented structure is realized, and the forward movement of outfitting work is promoted.
Description
Technical Field
The invention belongs to the technical field of ship construction, and particularly relates to a method for controlling installation accuracy of a ship construction piping system.
Background
In the current ship building process, the meaning of the folding pipe is simply understood as a pipe fitting for connecting internal pipes after the ship body assembly is carried. However, in the process of carrying the total group of segments, accumulated errors exist between the segments, so that the connecting pipes between the pipe fittings cannot be connected in advance through finished pipes, and the accumulated errors are solved through current calibration. The existing correction has the advantages of good precision and quality and low repair rate; the manufacturing process is complicated, labor and material are consumed, the manufacturing period is equivalent to five times of manufacturing time of the prefabricated pipe, the efficiency is low, and meanwhile the quality problems of flange accessory damage, existing correction pipe damage, process specification conflict, poor effect after shipping and the like can be derived. When the pipe diameter is larger, certain potential safety hazards exist in carrying.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a method for controlling the installation precision of a ship building pipe system, which can be used for manufacturing a finished product folding pipe in advance, greatly improve the operation efficiency, improve the installation efficiency precision of the folding pipe and reduce the cost.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention provides a method for controlling the installation precision of a ship building pipe system, which comprises the following steps:
step one, building a ship section according to a drawing and a design standard;
calculating the theoretical size of the folding pipe according to the design standard;
step three, performing three-dimensional measurement and analysis on the pre-installation precision of the ship pipeline according to the sectional building standard;
calculating the manufacturing size of the folded pipe according to the three-dimensional measurement data of the pipe installation precision;
calculating the manufacturing precision of the pipe according to the actual size of the folded pipe;
step six, pre-burying the manufactured folding pipe in a segmentation stage;
step seven, carrying out segment total group loading and carrying out precision calculation;
and step eight, installing the folding pipe.
In the first step, the main board jointed board, the scribing and the assembling of the ship section are constructed by adopting a unilateral standard construction method, three-dimensional data acquisition before and after welding is carried out on the ship section by adopting a total station, the ship section is compared with theoretical data by utilizing software, and the sectional standard side-end face, the sectional levelness and the main dimension precision are calculated.
As the preferable technical scheme, after the ship section is manufactured, 150mm butt-joint lines are manufactured on the heads and the tails of the sections, the distance between the butt-joint lines and the reference edge is 147mm, and the distance between the butt-joint lines and the auxiliary reference edge is 150 mm+the section allowance+the compensation quantity.
In the third step, the pre-installation reference and the sectional construction reference of the pipeline are the same reference, the circle center of the pipeline and the sectional structure point are acquired by using a total station according to the sectional construction reference after the pipe is installed, the pipe installation deviation is calculated and adjusted, and the pipe installation deviation is within +/-5 mm.
In the fourth step, the size of the folded tube is equal to the size of the folded tube management theory minus the X value deviation of the tube installation deviation in the third step.
In the fifth step, the manufacturing precision of the pipe includes calculation of leveling platform levelness, pipe blanking main size, leveling main size, flange end face degree and flange eye synchronism.
In the sixth step, the manufactured folding pipe is fixed on the segmented main board by a U-shaped pipe clamp.
In the seventh step, as a preferable technical solution, the calculation of the precision after the total group is segmented includes the following steps: the method comprises the steps of firstly leading reference segment data analyzed in ECO-BLOCK into ECO-OTS software, then leading loading segment data, connecting deviation values of loading simulation production with deviation values generated by the reference segments, overlapping deviation values of gaps in model generation, carrying out total assembly and loading on two segments according to 150mm butt lines manufactured in a segmentation stage, and setting the gap between the butt lines to be 6mm, so that the distance between the butt lines 3 after the total assembly is loaded is 300mm.
In the eighth step, the folding pipe is hoisted to the joint of the pipes, and the gasket corresponding to the pipes is inserted between the folding pipe and the pipes and fixed by screws.
Compared with the prior art, the invention has the following technical effects:
(1) The folding pipe is converted into a finished product from the existing calibration, so that the waiting of the pipe fitting at the later stage is avoided, the simultaneous butt joint of the pipe and the segmented structure is realized, and the forward movement of outfitting work is promoted.
(2) The finished pipe and the sectional preassembled pipe fitting are manufactured simultaneously, the folded pipe can be pre-buried in the sectional stage, a large amount of conveying work of the traditional pipe fitting from a platform to a ship to a cabin is avoided, and the labor intensity and the labor amount on site are reduced.
(3) The use of the finished product pipe of the invention cancels the later existing correction process, avoids the use of a large amount of angle steel, reduces the skill requirement of field operators and saves the labor force. The production cost is reduced, and the cost reduction and synergy work of the company is put in practice.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic representation of three-dimensional data measurement of a pipe installation according to the present invention.
Fig. 2 is a schematic diagram of a segment mounting docking according to the present invention.
Detailed Description
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
The embodiment provides a method for controlling the installation precision of a ship building pipe system, which comprises the following steps:
step one, building ship segments according to drawings and design standards. The main board jointed board, the scribing and the assembling of the ship section are constructed by adopting a unilateral standard construction method, three-dimensional data acquisition before and after welding is carried out on the ship section by adopting a total station, the ship section is compared with theoretical data by utilizing software, and the end face degree, the sectional levelness and the main dimension precision of the sectional standard edge are calculated. And (3) making a 150mm butt joint line on the segmented bow and stern, wherein the distance between the butt joint line and the reference edge is 147mm, and the distance between the butt joint line and the auxiliary reference edge is 150 mm+the segmentation allowance+the compensation amount. The reference edge is the starting reference for the assembly and positioning of the segmented non-allowance edge serving as a scribing line. The auxiliary reference edge is a segmented allowance edge serving as a scribing line, an assembly and positioning starting reference, and the compensation value is a compensation designed and added for segmented manufacturing welding and initiating explosive back burning shrinkage.
And step two, calculating the theoretical size of the folding pipe according to the design standard. Design criteria include a tube pallet management table, tube model.
And thirdly, performing three-dimensional measurement and analysis on the pre-installation precision of the ship pipeline according to the sectional building standard. The pipeline pre-installation reference and the sectional construction reference are the same reference, the pipe installation is finished, the circle center of the pipe and the sectional structure point are subjected to data acquisition and analysis by using a total station according to the sectional reference, the pipe installation deviation (X value ship length direction deviation, Y value half-width direction deviation and Z value ship height direction deviation) is determined, the pipe installation is strictly controlled to be within +/-3 mm, and meanwhile the unified height of flange symmetrical holes to the nearest main board is guaranteed when each sectional pipe is installed, so that the flange hole butt joint precision is guaranteed when the pipes are in butt joint.
And step four, calculating the manufacturing size of the closed pipe according to the three-dimensional measurement data of the pipe installation precision. The manufacturing size of the closed pipe is the theoretical size of the closed pipe design minus the X-value deviation of the three-dimensional measurement data of the butt joint pipe (the deviation is added when the deviation is negative, and the deviation is subtracted when the deviation is positive).
And fifthly, calculating the manufacturing precision of the pipe according to the actual size of the folded pipe. The horizontal + -2 mm of the pipe manufacturing platform, the main blanking size + -2 mm of the pipe, the main calibrating size + -2 mm, the flange end face degree + -0.5 DEG and the flange eye synchronization degree are strictly controlled, and the final precision of the pipe folding pipe is ensured.
And step six, pre-burying the manufactured folding pipe in a segmentation stage. The manufactured folding pipe is fixed on the sectional main board by utilizing a U-shaped pipe clamp, so that the sectional lifting folding pipe is prevented from falling off.
And step seven, carrying out segment total group loading and carrying out precision calculation. In order to ensure the mounting precision of the total group of the segments, the problem that the joint of the pipes is out of tolerance due to the deviation of the mounting joint surfaces of the two total groups of the segments, and the joint pipe cannot be mounted is avoided, the segments are pre-simulated in advance, namely, the standard segment (ECO-BLOCK) data which are well analyzed in the ECO-BLOCK are firstly imported in ECO-OTS software, and then the mounting segment (ECO-BLOCK) data are imported. The deviation value of the carrying simulation production is connected with the deviation value generated by the reference segment, and the deviation values of the gap and the overlapping are generated in the model. (ECO-OTS) A correction operation is performed in advance. And then, carrying out total assembly or carrying on the two sections according to a 150mm butt joint line manufactured in the section stage, strictly controlling the butt joint gap to be 6mm, and ensuring the butt joint line to be 300mm after carrying on the total assembly by the sections by +/-5 mm, and strictly following a welding process to prevent the influence of welding shrinkage on the size of the closed pipe.
And step eight, installing the folding pipe. Hoisting the folding pipe to the joint of the pipes, inserting a gasket corresponding to the pipes between the folding pipe and the segmented pipes, and fixing the gasket by using screws.
While the foregoing embodiments have been described in detail and with reference to the present invention, it will be apparent to one skilled in the art that modifications and improvements can be made based on the disclosure without departing from the spirit and scope of the invention.
Claims (7)
1. The method for controlling the installation precision of the ship building pipe system is characterized by comprising the following steps of:
step one, building a ship section according to a drawing and a design standard;
calculating the theoretical size of the folding pipe according to the design standard;
thirdly, performing three-dimensional measurement and analysis on the pre-installation precision of the ship pipeline according to the sectional construction reference, wherein the pipeline pre-installation reference and the sectional construction reference are the same reference, after the pipe installation is finished, performing data acquisition on the circle center of the pipeline and the sectional structure point according to the sectional construction reference by using a total station, calculating and adjusting the pipe installation deviation, wherein the pipe installation deviation comprises X-value ship length direction deviation, Y-value half-width direction deviation and Z-value ship height direction deviation, and the pipe installation deviation is within +/-5 mm;
calculating the manufacturing size of the folding pipe according to the three-dimensional measurement data of the pipe installation precision, wherein the manufacturing size of the folding pipe is equal to the size of the folding management theory minus the X value deviation of the pipe installation deviation in the third step;
calculating the manufacturing precision of the pipe according to the actual size of the folded pipe;
step six, pre-burying the manufactured folding pipe in a segmentation stage;
step seven, carrying out segment total group loading and carrying out precision calculation;
and step eight, installing the folding pipe.
2. The method for controlling the installation accuracy of the ship building pipe system according to claim 1, wherein in the first step, the main board jointed board, the scribing and the assembling of the ship segments are all constructed by adopting a single-side reference construction method, three-dimensional data acquisition before and after welding is carried out on the ship segments by adopting a total station, the ship segments are compared with theoretical data by utilizing software, and the segment reference side end face degree, the segment levelness and the main dimension accuracy are calculated.
3. The method for controlling the installation accuracy of the ship building pipe system according to claim 2, wherein after the ship is segmented, 150mm butt lines are formed on the heads and the tails of the segments, the distance between the butt lines and the reference edge is 147mm, and the distance between the butt lines and the auxiliary reference edge is 150 mm+the segmentation allowance+the compensation amount.
4. The method for controlling the installation accuracy of a ship building pipe system according to claim 1, wherein in the fifth step, the manufacturing accuracy of the pipe comprises calculation of leveling platform levelness, pipe blanking main size, leveling main size, flange end face degree and flange eye synchronicity.
5. The method for controlling the installation accuracy of a ship building pipe system according to claim 1, wherein in the sixth step, the fabricated folding pipe is fixed on the segmented main plate by using a U-shaped pipe clamp.
6. The method for controlling the installation accuracy of a ship building piping system according to claim 1, wherein in the seventh step, the calculation of the accuracy after the total group is segmented comprises the steps of: the method comprises the steps of firstly leading reference segment data analyzed in ECO-BLOCK into ECO-OTS software, then leading loading segment data, connecting deviation values of loading simulation production with deviation values generated by the reference segments, overlapping deviation values of gaps in model generation, carrying out total assembly and loading on two segments according to 150mm butt lines manufactured in a segmentation stage, and setting the gap between the butt lines to be 6mm, so that the distance between the butt lines 3 after the total assembly is loaded is 300mm.
7. The method for controlling the installation accuracy of a ship building pipe system according to claim 1, wherein in the eighth step, the closed pipe is hoisted to the joint of the pipes, and a gasket corresponding to the pipe is inserted between the closed pipe and the pipes and is fixed by screws.
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| CN202111311905.7A CN114179994B (en) | 2021-11-08 | 2021-11-08 | Ship building piping installation accuracy control method |
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| CN202111311905.7A CN114179994B (en) | 2021-11-08 | 2021-11-08 | Ship building piping installation accuracy control method |
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| 楚险峰 ; 张强 ; 王浩 ; 龚永春 ; 常谦.大型船舶分段涂装精细化质量管理探索.涂层与防护.2020,第40-41页. * |
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