CN103074876B - Offshore platform ice breaking device - Google Patents
Offshore platform ice breaking device Download PDFInfo
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- CN103074876B CN103074876B CN201310003568.4A CN201310003568A CN103074876B CN 103074876 B CN103074876 B CN 103074876B CN 201310003568 A CN201310003568 A CN 201310003568A CN 103074876 B CN103074876 B CN 103074876B
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Abstract
The invention relates to an offshore platform ice breaking device, which is characterized by comprising an upright cone-shaped supporting body, an inverted cone-shaped supporting body and a plurality of triangular prism-like bumps, wherein the shapes, the sizes and the structures of the upright cone-shaped supporting body and the inverted cone-shaped supporting body are completely the same; the bottom of the upright cone-shaped supporting body is buckled and integrally fixed with the top of the inverted cone-shaped supporting body; a plurality of triangular prism-like bumps are symmetrically arranged on the cone-shaped surfaces of the upright cone-shaped supporting body and the inverted cone-shaped supporting body at intervals; the edge and corner of each triangular prism-like bump extend outwards along the cone-shaped surface; a tip part of each triangular prism-like bump is close to the buckling part of the upright cone-shaped supporting body and the inverted cone-shaped supporting body; and the area of the cross section of each triangular prism-like bump is gradually increased away from the buckling part of the upright cone-shaped supporting body and the inverted cone-shaped supporting body. The offshore platform ice breaking device can be widely applied to an offshore platform ice breaking process.
Description
Technical field
The present invention relates to a kind of icebreaking device for ice formation engineering services, particularly about a kind of ocean platform icebreaking device.
Background technology
In the ocean of polar region and sub-polar region, winter, seawater surface can be frozen.Sea ice drifts about across the sea under tide, ocean current and wind action, and the sea ice of this drift can have an impact to offshore engineering structure.When the sea ice of drift acts on offshore oil platform structure, can there is fragmentation in sea ice, produces load action to ocean platform simultaneously.In the region that sea ice is more serious, this sea ice force is the design con-trol load of offshore platform, has very large impact to structure.In order to the ice loading of reducing effect on ocean platform, the spud leg that engineering circles is typically employed in ocean platform installs anti-ice cone additional, principle the effect of sea ice and ocean platform pile leg is changed into the conical surface of sea ice and anti-ice cone is had an effect, and the attrition crushing of slab is changed into bending failure.At present, engineering experience shows that above-mentioned measure can the maximum ice load of reducing effect at sea platform.
Ice itself is a kind of fragile material, and the contact form of its crushing behavior and structure has extremely responsive relation, if ice and vertical plane contact, attrition crushing can occur; If the surface contact of ice and inclination, broken form then can be changed into bending broken by attrition crushing.As shown in Figure 1 and Figure 2, existing offshore jacket platforms ice breaking cone 1 is simple conical structure, and the conical surface that slab 2 acts on ice breaking cone 1 forms radial direction, circumferential crack, causes slab 2 bending failure.Slab has certain periodicity in the prepyramidal fragmentation of ocean platform anti-ice, and namely each slab shattering process time relatively.This periodic crushing behavior can apply the dynamic loads with some cycles on ice breaking cone, existing engineering experience shows, natural period that is usual and ocean platform in the cycle of this load is close, offshore platform is easily caused to produce vibration, long-term vibration can cause harmful effect to ocean platform, causes the fatigue damage of offshore platform structure.
Summary of the invention
For the problems referred to above, the object of this invention is to provide one and there is the effect that better opens ice, not only can the ice loading of reducing effect on offshore platform structure, and the offshore platform structure vibration that slab causes can be reduced, ensure the ocean platform icebreaking device of ocean platform safety further.
For achieving the above object, the present invention takes following technical scheme: a kind of ocean platform icebreaking device, it is characterized in that: it comprises a positive conical supports, one back taper supporter and some triangle prismatic projections, the shape of described positive conical supports and back taper supporter, size is identical with structure, fasten with described back taper supporter top and be integrally fixed bottom described positive conical supports, symmetrical on the conical surface of described positive conical supports and back taper supporter, be arranged at intervals with some triangle prismatic projections, described in each, the corner angle of triangle prismatic projection stretch out laterally along conical surface, the point of triangle prismatic projection described in each is near the fastening place of described positive conical supports and back taper supporter, away from the fastening place of described positive conical supports and back taper supporter, and at the fastening place of described positive conical supports and back taper supporter triangle prismatic projection sectional area described in each close to 0, described in each, the horizontal cross-sectional area of triangle prismatic projection increases gradually.
The conical surface of described positive conical supports adopts the one in conical surface and pyramidal surface.
The conical surface of described back taper supporter adopts the one in conical surface and pyramidal surface.
Triangle prismatic projection described in each adopts Plate Welding to form.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, the present invention includes positive conical supports, back taper supporter and some triangle prismatic projections, fasten with back taper supporter top and be integrally fixed bottom positive conical supports, symmetrical on the conical surface of positive conical supports and back taper supporter, be arranged at intervals with some triangle prismatic projections, and the corner angle of each triangle prismatic projection are given prominence to laterally, when slab drift is come, first contact with corner angle, stressed owing to concentrating, to crackle be there is in slab inside, incipient stage only contacts in the edges and corners of triangle prismatic projection due to slab, contact area is little, offshore platform structure is stressed also less, compared with prior art, by changing the form of existing anti-ice cone conical surface and changing the crumbling method of ice, that is: the attrition crushing of slab is changed into bending failure, and then change the ice load form acted on offshore platform structure.2, the conical surface of positive conical supports of the present invention and back taper supporter is conical surface, slab contacts after inside cracks with the corner angle of triangle prismatic projection, conical surface along positive taper gripper shoe or back taper gripper shoe climbs by slab up or down, the crackle that now slab is formed along contact phase starts Crack Extension, and rupture, in this process, generate owing to there being initial crack, the crackle of slab is easily propagated, the fracture of slab is more prone to, the ice power acted on offshore platform structure also reduces further, the action period of ice power also can reduce, therefore away from the natural period of offshore platform structure, thus reduce the vibration of offshore platform structure.3, the point of each triangle prismatic projection of the present invention is near the fastening place of positive conical supports and back taper supporter, away from positive conical supports and back taper supporter fastening place, the horizontal cross-sectional area of each triangle prismatic projection increases gradually, just, back taper supporter fastening place, the corner angle of triangle prismatic projection are less, slab acts on this position, because the conical surface of positive conical supports and back taper supporter can adopt conical surface or pyramidal surface, therefore slab easily swash or under climb, be conducive to slab bending fragmentation formed.The present invention can be widely used in ocean platform and open ice in process.
Accompanying drawing explanation
Fig. 1 is existing ice breaking cone structural representation;
Fig. 2 is the schematic top plan view of Fig. 1;
Fig. 3 is icebreaking device structural representation of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 3, offshore platform icebreaking device of the present invention comprises positive conical supports 3, back taper supporter 4 and some triangle prismatic projections 5.The shape of positive conical supports 3 and back taper supporter 4, size is identical with structure, fasten with back taper supporter top 4 and be integrally fixed bottom positive conical supports 3, symmetrical on the conical surface of positive conical supports 3 and back taper supporter 4, interval arranges some triangle prismatic projections 5, the corner angle of each triangle prismatic projection 5 stretch out laterally along conical surface, the point of each triangle prismatic projection 5 is near the fastening place of positive conical supports 3 and back taper supporter 4, and at each triangle prismatic projection 5 sectional area of fastening place of positive conical supports 3 and back taper supporter 4 close to 0, away from the fastening place of positive conical supports 3 and back taper supporter 4, the horizontal cross-sectional area of each triangle prismatic projection 5 increases gradually.
In above-described embodiment, the conical surface of positive conical supports 3 and back taper supporter 4 can adopt conical surface or pyramidal surface.
In the various embodiments described above, each triangle prismatic projection 5 can adopt Plate Welding processing and fabricating to form, and the quantity of triangle prismatic projection 5 can be determined according to actual needs, and this is not restricted.
During use, offshore platform icebreaking device of the present invention is fixedly welded in ocean platform pile leg 6, positive conical supports 3 is concordant with the mean water of seawater with the fastening place of back taper supporter 4, when slab is come to offshore platform drift, when sea level fluctuations is more than mean water, slab acts on positive conical supports 3, first slab contacts with the point of triangle prismatic projection 5, because slab is concentrated stressed, to crackle be there is in slab inside, then slab upwards climbs along the conical surface of positive conical supports 3, now slab starts expansion along crackle, and rupture, when sea level fluctuations is below mean water, slab acts on back taper supporter 4, and the process of slab fracture is identical with said process.
The various embodiments described above are only for illustration of the present invention, and wherein the structure and connected mode etc. of each parts all can change to some extent, and every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.
Claims (5)
1. an ocean platform icebreaking device, it is characterized in that: it comprises a positive conical supports, one back taper supporter and some triangle prismatic projections, the shape of described positive conical supports and back taper supporter, size is identical with structure, fasten with described back taper supporter top and be integrally fixed bottom described positive conical supports, symmetrical on the conical surface of described positive conical supports and back taper supporter, be arranged at intervals with some triangle prismatic projections, described in each, the corner angle of triangle prismatic projection stretch out laterally along conical surface, the point of triangle prismatic projection described in each is near the fastening place of described positive conical supports and back taper supporter, and at the fastening place of described positive conical supports and back taper supporter triangle prismatic projection sectional area described in each close to 0, away from the fastening place of described positive conical supports and back taper supporter, described in each, the horizontal cross-sectional area of triangle prismatic projection increases gradually.
2. a kind of ocean platform icebreaking device as claimed in claim 1, is characterized in that: the conical surface of described positive conical supports adopts the one in conical surface and pyramidal surface.
3. a kind of ocean platform icebreaking device as claimed in claim 1, is characterized in that: the conical surface of described back taper supporter adopts the one in conical surface and pyramidal surface.
4. a kind of ocean platform icebreaking device as claimed in claim 2, is characterized in that: the conical surface of described back taper supporter adopts the one in conical surface and pyramidal surface.
5. a kind of ocean platform icebreaking device as claimed in claim 1 or 2 or 3 or 4, is characterized in that: triangle prismatic projection described in each adopts Plate Welding to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310003568.4A CN103074876B (en) | 2013-01-06 | 2013-01-06 | Offshore platform ice breaking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310003568.4A CN103074876B (en) | 2013-01-06 | 2013-01-06 | Offshore platform ice breaking device |
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| Publication Number | Publication Date |
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| CN103074876A CN103074876A (en) | 2013-05-01 |
| CN103074876B true CN103074876B (en) | 2015-04-29 |
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| CN201310003568.4A Active CN103074876B (en) | 2013-01-06 | 2013-01-06 | Offshore platform ice breaking device |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103485318B (en) * | 2013-09-23 | 2015-10-21 | 浙江海洋学院 | A kind of spud leg deicer |
| CN103790144B (en) * | 2014-03-09 | 2015-09-30 | 邱世军 | A kind of continuous ice-breaking mechanism |
| CN104456073B (en) * | 2014-12-01 | 2017-01-18 | 中国海洋石油总公司 | Ice-resistant ice piton structure for maritime LNG (Liquefied Natural Gas) receiving terminal |
| CN107142907B (en) * | 2017-07-04 | 2020-02-14 | 哈尔滨工业大学 | Ice-breaking pyramid and movable ice-breaking device with same |
| CN108118673A (en) * | 2018-01-02 | 2018-06-05 | 大连理工大学 | A kind of icebreaking device for improving flexible cone offshore platform structure anti-ice performance |
| CN110920816A (en) * | 2018-09-19 | 2020-03-27 | 哈尔滨工业大学 | Novel floating type ice-resistant platform |
| CN109371948A (en) * | 2018-12-19 | 2019-02-22 | 青岛迪玛尔海洋工程有限公司 | A kind of anti-icing column of ice-breaking |
| CN110984107B (en) * | 2019-12-23 | 2021-04-23 | 哈尔滨工程大学 | Device and method for removing crushed ice accumulation at wellhead area of jacket platform |
| CN112554148A (en) * | 2020-11-27 | 2021-03-26 | 大连理工大学 | Ice breaking and wave eliminating device for pile type foundation of offshore wind turbine |
| CN112554149A (en) * | 2020-11-27 | 2021-03-26 | 大连理工大学 | Ice breaking and wave eliminating combined device for pile type foundation of offshore wind turbine |
| CN113216122B (en) * | 2021-06-16 | 2022-07-01 | 江苏科技大学 | Drilling platform suitable for polar region |
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| US4602895A (en) * | 1982-06-15 | 1986-07-29 | Oy Wartsila Ab | Drilling platform |
| SU1700139A1 (en) * | 1990-01-19 | 1991-12-23 | Всесоюзный Научно-Исследовательский И Проектно-Изыскательский Институт Нефтегазопромысловых Сооружений На Континентальном Шельфе | Support of ice-resisting platform |
| SU1749375A1 (en) * | 1990-07-02 | 1992-07-23 | Всесоюзный Научно-Исследовательский И Проектно-Изыскательский Институт Нефтегазопромысловых Сооружений На Континентальном Шельфе | Ice-breaking arrangement of off-shore platform |
| RU2089704C1 (en) * | 1994-12-27 | 1997-09-10 | Олег Евгеньевич Новогрудский | Metal all-welded bearing block for piling-supported ice-resistant platform |
| CN101225651A (en) * | 2008-01-11 | 2008-07-23 | 天津大学 | Self-lifting active ice-resistant damping device |
| CN101289846A (en) * | 2008-06-12 | 2008-10-22 | 天津大学 | Auto spiral lifting active ice resistant device |
| CN203144990U (en) * | 2013-01-06 | 2013-08-21 | 中国海洋石油总公司 | Ice breaking device of ocean platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4602895A (en) * | 1982-06-15 | 1986-07-29 | Oy Wartsila Ab | Drilling platform |
| SU1700139A1 (en) * | 1990-01-19 | 1991-12-23 | Всесоюзный Научно-Исследовательский И Проектно-Изыскательский Институт Нефтегазопромысловых Сооружений На Континентальном Шельфе | Support of ice-resisting platform |
| SU1749375A1 (en) * | 1990-07-02 | 1992-07-23 | Всесоюзный Научно-Исследовательский И Проектно-Изыскательский Институт Нефтегазопромысловых Сооружений На Континентальном Шельфе | Ice-breaking arrangement of off-shore platform |
| RU2089704C1 (en) * | 1994-12-27 | 1997-09-10 | Олег Евгеньевич Новогрудский | Metal all-welded bearing block for piling-supported ice-resistant platform |
| CN101225651A (en) * | 2008-01-11 | 2008-07-23 | 天津大学 | Self-lifting active ice-resistant damping device |
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| CN203144990U (en) * | 2013-01-06 | 2013-08-21 | 中国海洋石油总公司 | Ice breaking device of ocean platform |
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| CN103074876A (en) | 2013-05-01 |
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Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation |
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