CN206889963U - Based on the flexible pipe bending restrictor for improving section - Google Patents
Based on the flexible pipe bending restrictor for improving section Download PDFInfo
- Publication number
- CN206889963U CN206889963U CN201720762294.0U CN201720762294U CN206889963U CN 206889963 U CN206889963 U CN 206889963U CN 201720762294 U CN201720762294 U CN 201720762294U CN 206889963 U CN206889963 U CN 206889963U
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- China
- Prior art keywords
- section
- inner joint
- limiter unit
- flexible pipe
- pipe bending
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Abstract
The utility model discloses a kind of based on the flexible pipe bending restrictor for improving section, including limiter unit and for connecting the external tapping of adjacent limiter unit, limiter unit includes the inner joint of a pair of half tiles, the longitudinal section of inner joint is class shaped cross-section, class shaped cross-section is included as the ridge portion of thickening layer, positioned at the mountain valley portion of the ridge portion both sides, the raised buckle on the outside of the portion of mountain valley, ridge portion is isosceles trapezoid, and mountain valley portion is right-angled trapezium.The utility model reduces integrally-built slenderness ratio, reducing its unstable failure in normal conditions and under damage may by the way that inner joint stage casing thickness is increased；Not only meet the requirement that Installation Flexibility is high, displacement performance is good, and it can ensure that inner flexible umbilical meets to design curvature under extreme operating condition, the performance requirement to material is reduced, reduces the original curved limiter material usage for reaching equality strength requirement, it is cost-effective.
Description
Technical field
It the utility model is related to ocean engineering flexible pipe cable protector, and in particular to a kind of based on the flexibility for improving section
Pipe bending restrictor, applied to fields such as oil platform, wind-powered electricity generation extra large cables.
Background technology
21st century is the epoch of ocean exploitation, and exploitation dynamics of the China in terms of ocean is consequently increased, soft
Property standpipe is also because its good service behaviour is widely used.Compliant riser itself good bandability, larger bending can be born and become
Shape, but influenceed normal in riser end and rigid structure junction it is possible that the phenomenon of overbending, causes Pipeline damage
Production operation.Therefore need bending restrictor to prevent its overbending, avoid Pipeline damage.Now widely used canonical form is curved
Bent limiter longitudinal sectional view is as shown in figure 1, its inner joint stage casing is hollow cylinder, and under such design, bending limits
Device overall structure thinner thickness, slenderness ratio is very big, when by larger external load and displacement (such as earthquake extreme operating condition), radially
Enormous pressure load is produced, easily occurs to bend unstability, causes structural failure, product failure.Therefore, above mentioned problem is urgently to be resolved hurrily.
Utility model content
Goal of the invention：In order to overcome the deficiencies in the prior art, the utility model provides a kind of based on improvement section
Flexible pipe bending restrictor, its role is to protect umbilical, the degree of crook of control umbilical in normal conditions, can resist compared with
Big external load and displacement deformation.
Technical scheme：In order to solve the above technical problems, of the present utility model bend limitation based on the flexible pipe for improving section
Device, including limiter unit and the external tapping for connecting limiter unit, the limiter unit include a pair half tiles
Inner joint, the longitudinal section of inner joint is class shaped cross-section, and the class shaped cross-section is included as the ridge portion of thickening layer, positioned at this
The mountain valley portion of ridge portion both sides, the raised buckle on the outside of the portion of mountain valley, the ridge portion are isosceles trapezoid, and the mountain valley portion is
Right-angled trapezium.
The utility model is connected to flexible pipe cable by interface, so as to prevent flexible pipe cable overbending, protects flexible pipe
Cable.Not only meet the requirement that Installation Flexibility is high, displacement performance is good, and can ensure inner flexible umbilical under extreme operating condition
Meet design curvature, reduce the performance requirement to material, reduce the original curved limiter material use for reaching equality strength requirement
Amount, it is cost-effective.Wherein, the limiter unit is n, and the external tapping is n-1, two adjacent limiter units by
One external tapping connection, the n are the integer more than or equal to 2.
Preferably, the height in the ridge portion for inner joint longitudinal section thickness half to 2/3rds.It is described
The uniform thickening layer of class shaped cross-section can carry out size adjusting, including a left side in casting process according to actual condition and load
Right two base angle angles, trapezoidal height.
The inner joint of the pair of half tiles is fastened by bolts together, and two limiter units adjacent to each other are by one
Individual external tapping connection.
Space be present between the adjacent limiter unit.Space be present between the buckle of limiter unit end so that
Adjacent limiter unit can relatively rotate at work, and mouth structure is inscribed by pore size, limiter in rotatable angle
Parameter determines.
Beneficial effect：Flexible pipe bending restrictor of the present utility model based on improvement section, has advantages below：
1st, in the utility model, the increase of inner joint stage casing thickness, integrally-built slenderness ratio is reduced, reduces it normal
Unstable failure under operating mode and under damage may.
2nd, found by numerical simulation, under by the identical load that can destroy original bend limiter, this practicality is new
Type can keep self structure stable, and stress distribution is uniform, and caused maximum stress reduces compared to original bend limiter maximum stress
An order of magnitude.Therefore reduced in the selection of material for material performance requirement itself, still using the feelings of equivalent material
Under condition, promote the security reliability of product.
3rd, in the utility model, inner joint stage casing is trapezoidal thickening, can be by adjusting trapezium base angle of inclination during design
To control bending restrictor maximum deflection curvature, strengthen the practicality of bending restrictor.Meanwhile compared to stage casing Integral upset,
The design of trapezoid cross section is effectively reduced the usage amount of material, cost-effective.
Brief description of the drawings
Fig. 1 is the longitudinal sectional view of conventional bending limiter；
Fig. 2 a are structural representation of the present utility model；
Fig. 2 b are class shaped cross-section schematic diagram in Fig. 2 a；
Fig. 3 is fractionation structural representation of the present utility model；
Fig. 4 is limiter unit assembling schematic diagram；
Fig. 5 is external tapping assembling schematic diagram.
Embodiment
The utility model is further described below in conjunction with the accompanying drawings.
As shown in Figures 2 to 5, it is of the present utility model based on the flexible pipe bending restrictor for improving section, including limiter
Unit and the external tapping 2 for connecting limiter unit, limiter unit include the inner joint 1 of a pair of half tiles, inner joint 1
Longitudinal section is class shaped cross-section, class shaped cross-section include the ridge portion as thickening layer, positioned at the mountain valley portion of the ridge portion both sides,
Raised buckle on the outside of the portion of mountain valley, ridge portion are isosceles trapezoid, and mountain valley portion is right-angled trapezium.
In the present embodiment, limiter unit is poured by polyurethane and formed.Limiter unit is entered by two and half tiles inner joints 1
The quantity of row connection, limiter unit and inner joint 1 can determine according to actual conditions and demand.In connection procedure, it should follow
Two neighboring limiter unit is first assembled, then is attached the two limiter units by external tapping 2, and so on, according to
Secondary progress.As shown in figure 3, first limiter unit and second limiter unit are respectively by 1 group of two and half tiles inner joint
Into.Because the edge of inner joint 1 is provided with buckle and groove (mountain valley portion), inside groove is provided with external tapping 2, therefore external tapping 2 and two phases
Adjacent limiter unit by mutually it is locked in a manner of be attached.
As shown in Figures 4 and 5, each limiter unit passes through snap beads by two tiles inner joints 1 of identical half
Bolt hole is attached synthesis.The snap beads of half tiles inner joint 1 are provided with bolt hole, the utility model preferably two
Bolt hole, corresponding bolt hole can be passed through with bolt, two inner joints 1 are synthesized into an entirety.It is as shown in figure 5, external
2 inside groove both sides outer rims of mouth are provided with bolt hole, and corresponding bolt hole can be passed through with bolt, and two external tappings are 2-in-1 into one
It is overall.
In the present embodiment, due to the ridge portion thickness increase of class shaped cross-section, limiter unit middle section structure slenderness ratio subtracts
It is small, reduce the possibility that unstability is bent under big load case.It is adjacent when being acted on by larger external load (such as earthquake load)
Bending restrictor unit will occur compared with big corner deform, when reach capacity degree of crook when, the lateral surface of external tapping 2 will with it is trapezoidal plus
The plane that the hypotenuse rotation of thick-layer forms is in contact, and produces interaction, and a part caused by bending direction outside is drawn
Power converts the pressure to bending direction, can effectively reduce caused maximum stress value in structure, so as to strengthen overall knot
The security performance of structure.Thickeied simultaneously compared to existing bending restrictor unit middle section structure with square-section or structure integrally adds
Thickness, materials demand is reduced, reduce cost.
In the present embodiment, limiter main part uses polyurethane material, and half tiles inner joint 1 and external tapping 2 are one
Body, which pours, to be formed, and the end face bolt hole of inner joint 1 and the outer rim bolt hole of external tapping 2 need to be reserved when pouring.Inner joint 1 was producing
Cheng Zhongke adjusts the convex shape that both mold ends section is right-angled trapezium, including base angle angle and height according to actual condition, from
And change the trapezoidal shape in the stage casing section of inner joint 1.It is identical for the bending restrictor model under same operating, only it need to design system
Make a mould；The design of trapezoid cross section facilitates withdrawing pattern with interior big outer small feature.
Described above is only preferred embodiment of the present utility model, it should be pointed out that：For the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as the scope of protection of the utility model.
Claims (5)
- It is 1. a kind of based on the flexible pipe bending restrictor for improving section, it is characterised in that：Including limiter unit and for connecting The external tapping of adjacent limiter unit, the limiter unit include the inner joint of a pair of half tiles, and the longitudinal section of inner joint is Class shaped cross-section, the class shaped cross-section include as the ridge portion of thickening layer, positioned at the mountain valley portion of the ridge portion both sides, be located at Raised buckle on the outside of the portion of mountain valley, the ridge portion are isosceles trapezoid, and the mountain valley portion is right-angled trapezium.
- It is 2. according to claim 1 based on the flexible pipe bending restrictor for improving section, it is characterised in that：The limiter Unit is n, and the external tapping is n-1, and two adjacent limiter units connects by an external tapping, the n for more than Integer equal to 2.
- It is 3. according to claim 1 based on the flexible pipe bending restrictor for improving section, it is characterised in that：The ridge portion Height for inner joint longitudinal section thickness half to 2/3rds.
- 4. the flexible pipe bending restrictor based on improvement section according to any one of claims 1 to 3, it is characterised in that： The inner joint of the pair of half tiles is fastened by bolts together.
- 5. the flexible pipe bending restrictor based on improvement section according to any one of claims 1 to 3, it is characterised in that： Space be present between the adjacent limiter unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720762294.0U CN206889963U (en) | 2017-06-28 | 2017-06-28 | Based on the flexible pipe bending restrictor for improving section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720762294.0U CN206889963U (en) | 2017-06-28 | 2017-06-28 | Based on the flexible pipe bending restrictor for improving section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206889963U true CN206889963U (en) | 2018-01-16 |
Family
ID=61298100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720762294.0U Expired - Fee Related CN206889963U (en) | 2017-06-28 | 2017-06-28 | Based on the flexible pipe bending restrictor for improving section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206889963U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206964A (en) * | 2019-06-04 | 2019-09-06 | 大连理工大学 | A kind of ocean flexible pipe cable bend limiter with toroidal cavity |
| EP3564569A1 (en) * | 2018-05-03 | 2019-11-06 | Nexans | Bending restrictor |
| CN111371060A (en) * | 2020-03-25 | 2020-07-03 | 台州中浮新材料科技股份有限公司 | Marine flexible pipe cable sheath |
| CN113161940A (en) * | 2021-04-09 | 2021-07-23 | 天津大学 | Bending limiter with heat dissipation function |
| EP4386175A1 (en) * | 2022-12-16 | 2024-06-19 | Nexans | Bend restrictor |
-
2017
- 2017-06-28 CN CN201720762294.0U patent/CN206889963U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3564569A1 (en) * | 2018-05-03 | 2019-11-06 | Nexans | Bending restrictor |
| US11268646B2 (en) | 2018-05-03 | 2022-03-08 | Nexans | Bending restrictor |
| CN110206964A (en) * | 2019-06-04 | 2019-09-06 | 大连理工大学 | A kind of ocean flexible pipe cable bend limiter with toroidal cavity |
| CN110206964B (en) * | 2019-06-04 | 2024-02-06 | 大连理工大学 | Ocean flexible pipe cable bending limiter with annular cavity |
| CN111371060A (en) * | 2020-03-25 | 2020-07-03 | 台州中浮新材料科技股份有限公司 | Marine flexible pipe cable sheath |
| CN111371060B (en) * | 2020-03-25 | 2022-04-05 | 台州中浮新材料科技股份有限公司 | Marine flexible pipe cable sheath |
| CN113161940A (en) * | 2021-04-09 | 2021-07-23 | 天津大学 | Bending limiter with heat dissipation function |
| EP4386175A1 (en) * | 2022-12-16 | 2024-06-19 | Nexans | Bend restrictor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Handong Inventor after: Wang Caicai Inventor after: Huang Dan Inventor after: Jiang Dongju Inventor before: Yan Rui Inventor before: Wang Caicai Inventor before: Huang Dan Inventor before: Jiang Dongju |
|
| 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: 20180116 Termination date: 20200628 |