CN205477406U - Novel prevent curvedly device - Google Patents
Novel prevent curvedly device Download PDFInfo
- Publication number
- CN205477406U CN205477406U CN201620195025.6U CN201620195025U CN205477406U CN 205477406 U CN205477406 U CN 205477406U CN 201620195025 U CN201620195025 U CN 201620195025U CN 205477406 U CN205477406 U CN 205477406U
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- China
- Prior art keywords
- dividing plate
- center drum
- shell
- baffle
- central drum
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Abstract
The utility model discloses a novel prevent curvedly device, including central drum and spring beam, follow the baffle that the length direction top -down spacer sleeve was equipped with a plurality of discs on the central drum, the axial displacement of central drum can be followed to the baffle, the spring beam passes each baffle in proper order, is connected fixedly with each baffle, the device includes the shell, and spring beam and baffle are all pacified casedly, and the shell is stretched out at the both ends of central drum, the upper portion of shell links to each other with the outer edge of baffle, and the lower part of shell links to each other with the outer peripheral face of central drum. The beneficial effects of the utility model are that: the main effect component that the use spring beam is bent as the limit, flexible riser stress concentration does not have too big camber, just enables camber and tries one's best in succession along flexible riser, and the structure on flexible riser top plays effectual control to tired problem, has fully guaranteed the bending resistance effect, simultaneously, central drum also provides certain protection for flexible riser, improves the life of flexible riser.
Description
Technical field
This utility model relates to a kind of bend preventing device, in particular for the novel bend preventing device on compliant riser top, ocean.
Background technology
Developing towards deep water field along with production platform, the advantages such as marine riser is flexible with it, anticorrosion, convenient-laying and recovery, designability are strong, it has become key components in deep-sea oil development system.Ocean compliant riser is for connecting floating ocean platform waterborne (such as semisubmersible platform, FPSO) and the unique key structure of subsea production system, and it bears top tension force, wave, the effect of current load and along with the stress of the increase of the depth of water, standpipe is the most increasingly complex.
During compliant riser uses, riser top ends is connected with the ocean platform production facility on top, and owing to the rigidity of Upper float is significantly larger than the rigidity of standpipe, therefore the connecting portion at both easily occurs that curvature is excessive and the phenomenon of stress concentration；Secondly, when Upper float has reciprocating motion, lower riser also can produce dynamic response, junction occurs the probability of fatigue failure to increase, can cause serious harm to the serviceability of pipeline, the efficiency making production is substantially reduced, and affects the safety of production simultaneously, even causes great oil and gas leakage accident.In order to protect compliant riser not destroy; the restriction device preventing overbending is generally installed at these linkage sections; making rigidity seamlessly transit between higher value (Upper float) and smaller value (compliant riser), limit the overbending of standpipe, Accident prevention occurs.Therefore, anti-bending device plays an important role in actual production works as the auxiliary part that compliant riser is indispensable.
But, the most domestic used limit bending apparatus many uses high molecular polymer shell does the curved component of limit, it is easy to the deficiencies such as fatigue；And major part relies on external buying, design cost is high, and procurement cycle is long, not only can increase production cost, also affects the normal progress of production.
Summary of the invention
The purpose of this utility model is, for the deficiencies in the prior art, it is provided that the novel bend preventing device that a kind of simple in construction, bending resistance are effective.
The technical solution adopted in the utility model is: a kind of novel bend preventing device, and including center drum and spring lever, on center drum, spacer sleeve is provided with some discoidal dividing plates the most from top to bottom, and dividing plate can moving axially along center drum；Described spring lever sequentially passes through each dividing plate, is connected fixing with each dividing plate.
By such scheme, described device includes that shell, spring lever and dividing plate are respectively mounted in the enclosure, and shell is stretched out at the two ends of center drum；The top of shell is connected with dividing plate outer topmost, and the bottom of shell is connected with the outer peripheral face of center drum.
By such scheme, the upper end of described center drum is provided with adpting flange.
By such scheme, described dividing plate is formed by connecting by two semicircular small baffles.
By such scheme, described dividing plate uniform intervals is arranged on center drum.
By such scheme, described dividing plate circumferentially uniform intervals offers through hole, and described spring lever is through the through hole of dividing plate.
By such scheme, the length direction uniform intervals along center drum is provided with four pieces of dividing plates, every piece of dividing plate all with the axis perpendicular of center drum.
The beneficial effects of the utility model are: 1, use spring lever as limiting curved Main Function component, compliant riser stress is concentrated, without crossing deep camber, and can make curvature along compliant riser the most continuously, fatigue problem is played effective control by the structure on compliant riser top, has fully ensured that bending resistance effect；Meanwhile, center drum also provides certain protection for compliant riser, improves the service life of compliant riser；2, dividing plate is used to fix spring lever, easy accessibility, it is simple to maintenance；3, this apparatus structure is simple, and cost of manufacture is low, practical.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of one specific embodiment of this utility model.
Fig. 2 is the present embodiment middle shell internal structure schematic diagram.
Wherein: 1, center drum；2, adpting flange；3, dividing plate；4, bolt, 5, spring lever；6, shell；7, compliant riser.
Detailed description of the invention
In order to be more fully understood that this utility model, with specific embodiment, this utility model is further described below in conjunction with the accompanying drawings.
The novel bend preventing device of one as depicted in figs. 1 and 2, including shell 6, center drum 1 and spring lever 5, shell 6 is stretched out at the two ends of center drum 1；On center drum 1, spacer sleeve is provided with some discoidal dividing plates 3 the most from top to bottom, and dividing plate 3 can sliding axially along center drum 1；Spring lever 5 sequentially passes through each dividing plate 3, is connected fixing (spring lever 5 is connected fixing by dividing plate 3 with center drum 1, and the axis direction of spring lever 5 is parallel with the axial direction of center drum 1) with each dividing plate 3；Spring lever 5 and dividing plate 3 are installed in shell 6, and the top of shell 6 is connected with the outer of dividing plate 3 topmost, and the lower radius of shell 6 is gradually reduced, until being connected with the outer peripheral face of center drum 1.
Preferably, the upper end of center drum 1 is provided with adpting flange 2, and center drum 1 is connected to a fixed with marine floats such as ocean platforms by adpting flange 2.
In the present embodiment, being arranged with four pieces of dividing plates 3 along center drum 1 length direction uniform intervals, every piece of dividing plate 3 is each perpendicular to the axis of center drum 1；Dividing plate 2 circumferentially uniform intervals offers through hole, and spring lever 5, through the through hole (two ends of spring lever 5 are directly installed on dividing plate 3) of dividing plate 3, is connected fixing by dividing plate 3 with center drum 1；Dividing plate 3 is connected (being connected by bolt 4) by two semicircular small baffles and forms.
Center drum 1 in this utility model is the main part of this device, and compliant riser 7 is through center drum 1, and the upper end of compliant riser 7 is connected with ocean platform.Dividing plate 3 is used for fixing spring lever 5 and center drum 1.Spring lever 5 is the curved component of main limit of this device, prevents compliant riser 7 overbending.Apparatus main body part is completely cut off by shell 6 with external environment, shields, and shell 6 also functions to the curved effect of certain limit simultaneously.
When compliant riser 7 is bent by External Force Acting power, the center drum 1 of this bend preventing device bends therewith, and the dividing plate 3 being clamped on center drum 1 moves axially；Then, the spring lever 5 being fixed on dividing plate 3 bends due to the movement of dividing plate 3.But, owing to spring lever 5 is compared with compliant riser 7, its bending rigidity is big, and deformation is little, 5 certain cushioning effects of spring lever when compliant riser 7 bends, and substantially reduces the flexural deformation of compliant riser 7, thus reaches anti-bending purpose.
The above is preferred implementation of the present utility model, it is noted that for those skilled in the art, without departing under principle premise of the present utility model, the technical solution of the utility model can be done the improvement of some applicable situations.Therefore, protection domain of the present utility model is not limited to this, those of skill in the art any based in technical solutions of the utility model, the change of unsubstantiality is included in this utility model protection domain within.
Claims (7)
1. a novel bend preventing device, it is characterised in that include center drum and spring lever, on center drum, spacer sleeve is provided with some discoidal dividing plates the most from top to bottom, and dividing plate can moving axially along center drum；Described spring lever sequentially passes through each dividing plate, is connected fixing with each dividing plate.
Novel bend preventing device the most as claimed in claim 1, it is characterised in that described device includes that shell, spring lever and dividing plate are respectively mounted in the enclosure, and shell is stretched out at the two ends of center drum；The top of described shell is connected with the outer of dividing plate topmost, and the bottom of shell is connected with the outer peripheral face of center drum.
Novel bend preventing device the most as claimed in claim 1, it is characterised in that the upper end of described center drum is provided with adpting flange.
Novel bend preventing device the most as claimed in claim 1, it is characterised in that described dividing plate is formed by connecting by two semicircular small baffles.
Novel bend preventing device the most as claimed in claim 1, it is characterised in that described dividing plate uniform intervals is arranged on center drum.
Novel bend preventing device the most as claimed in claim 1, it is characterised in that described dividing plate circumferentially uniform intervals offers through hole, described spring lever is through the through hole of dividing plate.
Novel bend preventing device the most as claimed in claim 1, it is characterised in that the length direction uniform intervals along center drum is provided with four pieces of dividing plates, every piece of dividing plate all with the axis perpendicular of center drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620195025.6U CN205477406U (en) | 2016-03-11 | 2016-03-11 | Novel prevent curvedly device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620195025.6U CN205477406U (en) | 2016-03-11 | 2016-03-11 | Novel prevent curvedly device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205477406U true CN205477406U (en) | 2016-08-17 |
Family
ID=56656484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620195025.6U Expired - Fee Related CN205477406U (en) | 2016-03-11 | 2016-03-11 | Novel prevent curvedly device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205477406U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143291A (en) * | 2017-07-13 | 2017-09-08 | 安世亚太科技股份有限公司 | Counter-bending booster |
| CN109869539A (en) * | 2017-08-25 | 2019-06-11 | 章俊 | One kind being based on flywheel ring shockproof municipal works pipeline |
-
2016
- 2016-03-11 CN CN201620195025.6U patent/CN205477406U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107143291A (en) * | 2017-07-13 | 2017-09-08 | 安世亚太科技股份有限公司 | Counter-bending booster |
| CN109869539A (en) * | 2017-08-25 | 2019-06-11 | 章俊 | One kind being based on flywheel ring shockproof municipal works pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170311 |