CN102717248A - Design method for section closure accuracy of octagonal pile leg - Google Patents
Design method for section closure accuracy of octagonal pile leg Download PDFInfo
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- CN102717248A CN102717248A CN2012102304873A CN201210230487A CN102717248A CN 102717248 A CN102717248 A CN 102717248A CN 2012102304873 A CN2012102304873 A CN 2012102304873A CN 201210230487 A CN201210230487 A CN 201210230487A CN 102717248 A CN102717248 A CN 102717248A
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Abstract
The invention relates to a design method for the section closure accuracy of an octagonal pile leg. The method comprises the following steps of: dividing the pile legs into sections; performing accuracy distribution on each section by using the dimension chain principle; calculating the compensation amount of welding deformation to replace allowance by a method for calculating the compensation amount of ship sections, so that the sections are constructed without the allowance; and forming a dimension chain by using the added compensation amount, the basic dimensions of the sections and a gap between weld joints, and calculating the reasonable tolerance range of the closed sections. The method has the advantages that the dimension accuracy of pin holes after closure welding is ensured, an impact load and material wear which are caused when the pin holes are matched with pin shafts are reduced, working time and materials are saved, the working requirement of the pile leg is met, and the like.
Description
Technical field
The present invention relates to the accuracy Design technical field of ocean engineering equipment, refer in particular to a kind of octagon spud leg segment folding dimensional accuracy method for designing.
Background technology
The wind energy on the sea generating is the new direction of world today's development, and it is the core technology of capturing the offshore wind farm field with technology that its wind-powered electricity generation unit is installed equipment.The designing technique content that wind power equipment is installed ship is high, the construction difficulty is big, needs the support of a large amount of high most advanced and sophisticated core technologies.Wind-powered electricity generation is installed ship has some liftable spud legs, and spud leg is the critical component that wind-powered electricity generation is installed ship, and its bearing capacity is being undertaken the important task that whole ship promotes, and in manufacturing and designing, extremely payes attention to, and the performance of spud leg directly has influence on safety and the effect that wind-powered electricity generation is installed the ship operation.Being produced in the whole hull construction of spud leg is of crucial importance, and it is very harsh that it builds required precision, and welding process requirement is strict.
The octagon spud leg is an AND DEWATERING FOR ORIFICE STRUCTURE, and equidistant symmetric array circular pin hole on four symmetrical limits of spud leg, and the latch that is used for hydraulic bolt device when promoting spud leg inserts spud leg.Because hydraulic bolt device controlled by Mechatronic Systems, adorn therefore that the distance between each pin-and-hole must be consistent on the leg, its required precision is very high.Pin-and-hole on the spud leg can keep each to divide the dimensional accuracy of intersegmental pin-and-hole after being made by special-purpose moulding bed basically; But spud leg carries out in the process of segment folding the dimensional accuracy between different segmentation pin-and-holes being guaranteed very difficulty: (1) spud leg itself is a large-scale steel structure; The stress and the distortion that produce when installing and welding make pile leg structure shrink distortion, and dimensional accuracy is difficult to guarantee; (2) spud leg ultralong overweight, segmentation is divided many, and welding interval is long, and operation is many, causes accumulated error bigger; (3) welding process is manually-operated, and error is difficult to control, and the welding process distortion is complicated, grasps difficulty of deformation rule.Therefore in spud leg segmentation partition process, must carry out comprehensive accuracy Design, the calculating cumulative error is distributed tolerance, estimates weld seam contraction distortion amount, to realize comprehensive section non-allowance manufacturing, reaches the operating accuracy requirement after making the spud leg welding.
The patent of Harbin Sihai Digital Control Technology Co., Ltd's application: the oil platform spud leg welding production line (patent No.: CN200920099471.7) disclose the production line that a kind of oil platform spud leg is made; Specifically set forth the process that spud leg is made, but distributed still not mentioned for the precision that the octagon spud leg closes up under the pin-and-hole size-spacing is strict with.The patent of Dalian Shipping Heavy Industry Group Co., Ltd.'s application: the large-scale truss type stake leg segmentation data detection method (patent No.: CN200710157587.7) disclose the method that a kind of diabolo truss framed leg size and local accuracy measure; Through measuring major dimension and fragment size to obtain respectively to measure the dimensional accuracy and the deviation of segmentation; Belong to precision control category, but still not mentioned accuracy Design aspect is being considered under the segmentation welding deformation situation to the concrete Tolerance Design of fragment size.
Summary of the invention
The objective of the invention is to provide a kind of simple and practical octagon spud leg segment folding dimensional accuracy method for designing.
In order to achieve the above object, the present invention has taked following technical scheme: a kind of octagon spud leg segment folding dimensional accuracy method for designing is characterized in that this method may further comprise the steps:
1), spud leg being carried out segmentation divides; Whole spud leg is divided into A, B, C, D, E, F, seven segmentations of G successively according to welding requirements; And shoe S segmentation amounts to eight segmentations; Each segmentation is according to requirements of making mark corresponding size A, B, C, D, E, F, G, S, and spud leg and shoe overall size are L.
2), each fragment size and spud leg length overall are constituted dimension chain, be closed-loop with the spud leg length overall, distribute each fragment size precision according to the length overall required precision.
3), above-mentioned definite fragment size is divided into segmentation basic size, weld size, three parts of contraction distortion compensation rate.Confirm to reserve weld size, adopt the computational methods calculating of hull parts compensation rate and confirm the welding contraction distortion amount, size and the tolerance confirmed according to each segmentation place amount of contraction, replace allowance with deflection.
4), segmentation basic size, welding seam distance, shrinkage-compensating amount are formed the sealing dimension chain, driven dimension error and distribution of compensation tolerance are confirmed the final basic size and the tolerance of segmentation.
The present invention through the application of dimension chain principle, carries out precision to each segmentation and distributes after spud leg is carried out the segmentation division; Use boat segmental compensation rate computational methods, calculate the welding deformation compensation rate, make segmentation realize no surplus construction to replace surplus; Through being formed dimension chain, the compensation rate that places and segmentation basic size and weld gap calculate; Obtain the reasonable tolerance scope of each segment folding, guarantee to close up the dimensional accuracy between each pin-and-hole of welding back, to reduce shock loading and the fret wear that pin-and-hole cooperates with bearing pin; Save man-hour and material, guarantee the spud leg job requirement.
Description of drawings:
Fig. 1 is that the size layout drawing is divided in the spud leg segmentation;
Fig. 2 is the spud leg schematic cross-section;
Fig. 3 is that spud leg is the dimension chain structure chart of makeup ring with each fragment size, weld size, deformation-compensated amount; Label among the figure:
The specific embodiment:
In order to deepen to understanding of the present invention, will combine embodiment and accompanying drawing that the present invention is made further detailed description below, this embodiment only is used to explain the present invention, does not constitute the qualification to protection domain of the present invention.
The present invention shows a kind of octagon spud leg segment folding dimensional accuracy method for designing; The accuracy Design that present embodiment is installed the ship spud leg with large-scale wind electricity is an example; This spud leg is the octagon AND DEWATERING FOR ORIFICE STRUCTURE; Mainboard is that NV690 unimach, thickness reach 100mm, and the high 71.5m of spud leg, single weight reach 630T, and this spud leg accuracy Design step is divided into segmentation and divides, draws a plurality of steps such as dimension chain figure, precision distributions, compensation rate calculating, size and tolerance be definite.
1), spud leg being carried out segmentation divides; The high 71495mm of whole spud leg; Be divided into A, B, C, D, E, F, seven segmentations of G successively according to welding requirements and installation requirements, and shoe S segmentation eight segmentations altogether, each segmentation is according to requirements of making mark corresponding size A, B, C, D, E, F, G, S; Shown in accompanying drawing 1, spud leg and shoe overall size are L.
2), analyze each fragment size and spud leg length overall; Draw one dimension dimension chain figure; Eight segmentations respectively are makeup ring, and the spud leg total length is a closed-loop, adopt the medium tolerance grade apportion design of dimension chain principle; According to the designing requirement of spud leg total length with the length overall error distribution in each segmentation, confirm the basic deviation of each segmentation.
3), above-mentioned definite fragment size is divided into segmentation basic size, weld size, three parts of contraction distortion compensation rate.Reserve weld size according to confirming, therefore the welding contraction distortion because the distortion of steel plate welding mainly is only considers the sweating heat crushed element.Different basic sizes with different segmentations; Adopt the computational methods calculating of hull parts compensation rate and confirm the welding contraction distortion amount; Calculate the welding deformation compensation rate of each segmentation respectively according to the small sample statistical calculation method; Size and the tolerance confirmed according to each segmentation place amount of contraction, replace allowance with deflection.
4), segmentation basic size, welding seam distance, shrinkage-compensating amount are formed the sealing dimension chain, basic size is made as X0, X1, X2, X3, X4, X5, X6, X7; Seven of weld gaps are made as X8, X9, X10, X11, X12, X13, X14; Seven groups of welding contraction distortion amounts are made as X15, X16, X17, X18, X19, X20, X21.Draw dimension chain figure, shown in accompanying drawing 3; According to formula
Find the solution segmentation basic size and scale error; The basic size of each segmentation is that first fragment size (A-G, S) deducts the both sides welding seam distance and adds the corresponding shrinkage-compensating amounts in both sides (only add and subtract once at two ends); Adopting the adjustment method is compensated loop distribution of compensation tolerance with the shrinkage-compensating X15-X21 that takes measurements, and confirms the final basic size and the tolerance of segmentation.
The present invention has the following advantages: guaranteed to close up the dimensional accuracy between each pin-and-hole of welding back, to reduce shock loading and the fret wear that pin-and-hole cooperates with bearing pin, saved man-hour and material, guaranteed the job requirement of spud leg.
Claims (2)
1. octagon spud leg segment folding dimensional accuracy method for designing is characterized in that: may further comprise the steps:
1), spud leg being carried out segmentation divides; Whole spud leg is divided into A, B, C, D, E, F, seven segmentations of G successively according to welding requirements; And shoe S segmentation amounts to eight segmentations; Each segmentation is according to requirements of making mark corresponding size A, B, C, D, E, F, G, S, and spud leg and shoe overall size are L;
2), each fragment size and spud leg length overall are constituted dimension chain, be closed-loop with the spud leg length overall, distribute each fragment size precision according to the length overall required precision;
3), above-mentioned definite fragment size is divided into segmentation basic size, weld size, three parts of contraction distortion compensation rate; Confirm to reserve weld size; Adopt the computational methods calculating of hull parts compensation rate and confirm the welding contraction distortion amount; Size and the tolerance confirmed according to each segmentation place amount of contraction, replace allowance with deflection;
4), segmentation basic size, welding seam distance, shrinkage-compensating amount are formed the sealing dimension chain, driven dimension error and distribution of compensation tolerance are confirmed the final basic size and the tolerance of segmentation.
2. a kind of octagon spud leg segment folding accuracy Design method according to claim 1; It is characterized in that: the sealing dimension chain that segmentation basic size, welding seam distance, shrinkage-compensating amount are formed; Adopt the adjustment method to take measurements and be compensated loop distribution of compensation tolerance, confirm the final basic size and the tolerance of segmentation with shrinkage-compensating.
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410163A (en) * | 2013-08-20 | 2013-11-27 | 南通中新钢构重工有限公司 | Manufacturing process of pile leg of windmill installation vessel |
| CN103406639A (en) * | 2013-08-20 | 2013-11-27 | 南通中新钢构重工有限公司 | Welding process for pile leg stereo sectional erection |
| CN104590505A (en) * | 2014-12-03 | 2015-05-06 | 中船黄埔文冲船舶有限公司 | Construction precision control method for cylinder pin hole type leg |
| WO2016045552A1 (en) * | 2014-09-26 | 2016-03-31 | 黄国峰 | High-precision manufacture control method for electromechanical device |
| CN106812126A (en) * | 2017-01-13 | 2017-06-09 | 广东精铟海洋工程股份有限公司 | A kind of high-precision offshore platform spud leg assemble method and its spud leg being assembled into |
| CN108557009A (en) * | 2017-12-20 | 2018-09-21 | 广州文冲船厂有限责任公司 | A kind of computational methods of body section compensation rate |
| CN113352052A (en) * | 2021-06-25 | 2021-09-07 | 成都飞机工业（集团）有限责任公司 | Tolerance distribution machining method for double-lug-piece support part |
| CN113704892A (en) * | 2021-09-01 | 2021-11-26 | 江南造船(集团)有限责任公司 | Process model generation method and system with added compensation amount and groove and terminal |
| CN114083186A (en) * | 2021-12-01 | 2022-02-25 | 上海新力动力设备研究所 | Grouped vehicle distribution method for combustion chamber shell |
| CN114179994A (en) * | 2021-11-08 | 2022-03-15 | 上海江南长兴造船有限责任公司 | Ship building piping installation precision control method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410163A (en) * | 2013-08-20 | 2013-11-27 | 南通中新钢构重工有限公司 | Manufacturing process of pile leg of windmill installation vessel |
| CN103406639A (en) * | 2013-08-20 | 2013-11-27 | 南通中新钢构重工有限公司 | Welding process for pile leg stereo sectional erection |
| WO2016045552A1 (en) * | 2014-09-26 | 2016-03-31 | 黄国峰 | High-precision manufacture control method for electromechanical device |
| CN104590505A (en) * | 2014-12-03 | 2015-05-06 | 中船黄埔文冲船舶有限公司 | Construction precision control method for cylinder pin hole type leg |
| CN106812126A (en) * | 2017-01-13 | 2017-06-09 | 广东精铟海洋工程股份有限公司 | A kind of high-precision offshore platform spud leg assemble method and its spud leg being assembled into |
| CN108557009A (en) * | 2017-12-20 | 2018-09-21 | 广州文冲船厂有限责任公司 | A kind of computational methods of body section compensation rate |
| CN113352052A (en) * | 2021-06-25 | 2021-09-07 | 成都飞机工业（集团）有限责任公司 | Tolerance distribution machining method for double-lug-piece support part |
| CN113352052B (en) * | 2021-06-25 | 2022-03-15 | 成都飞机工业（集团）有限责任公司 | Tolerance distribution machining method for double-lug-piece support part |
| CN113704892A (en) * | 2021-09-01 | 2021-11-26 | 江南造船(集团)有限责任公司 | Process model generation method and system with added compensation amount and groove and terminal |
| CN113704892B (en) * | 2021-09-01 | 2024-01-12 | 江南造船(集团)有限责任公司 | Process model generation method, system and terminal added with compensation quantity and groove |
| CN114179994A (en) * | 2021-11-08 | 2022-03-15 | 上海江南长兴造船有限责任公司 | Ship building piping installation precision control method |
| CN114179994B (en) * | 2021-11-08 | 2023-12-26 | 上海江南长兴造船有限责任公司 | Ship building piping installation accuracy control method |
| CN114083186A (en) * | 2021-12-01 | 2022-02-25 | 上海新力动力设备研究所 | Grouped vehicle distribution method for combustion chamber shell |
| CN114083186B (en) * | 2021-12-01 | 2024-05-03 | 上海新力动力设备研究所 | Combustion chamber shell grouping and car distribution method |
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Application publication date: 20121010 |