CN205175638U - A multispan strutting arrangement for multispan submarine pipeline vortex -induced vibration testing - Google Patents
A multispan strutting arrangement for multispan submarine pipeline vortex -induced vibration testing Download PDFInfo
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- CN205175638U CN205175638U CN201520493310.1U CN201520493310U CN205175638U CN 205175638 U CN205175638 U CN 205175638U CN 201520493310 U CN201520493310 U CN 201520493310U CN 205175638 U CN205175638 U CN 205175638U
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Abstract
The utility model discloses a multispan strutting arrangement of pipeline model among the multispan submarine pipeline vortex -induced vibration testing, support the cardboard including fixed supporting pillar, pivotable support post and a plurality of pipeline model, the top and the middle part of fixed stay post are equipped with the connecting plate respectively, the bottom of fixed stay post is fixed with the fixed plate, the fixed plate with the fixed stay post is to be arranged perpendicularly, be equipped with two first through -holes on the fixed plate, the top of rotatable supporting pillar is fixed with the angle fixed board, the middle part both sides welding of rotatable supporting pillar has the rope reinforced structure, the bottom and a pipeline model cardboard of rotatable supporting pillar are connected, the contained angle of axis and the plate body thickness direction of supported hole is 0 degree, 15 degrees, 30 degrees and 45 degrees respectively on four pipeline model cardboards. The utility model discloses the support that flows down the submarine pipeline model perpendicularly can be regarded as, the support of (being incoming flow and submarine pipeline out of plumb) submarine pipeline model still can be flowed down as the inclination.
Description
Technical field
The utility model relates to a kind of test unit of field of ocean engineering, specifically, what relate to is a kind of servicing unit applying multispan and support.
Background technology
Day by day deficient with landing field hydrocarbon resources, people concentrate on offshore and gas development more sight, the lifeline that submarine pipeline transports as marine oil and gas exploitation, and its quantity increases year by year.Because deep seafloor is with a varied topography, bad environments, submarine pipeline inevitably can form suspended span section, even multi-span.When seawater flows through suspended span pipeline, pipeline trailing edge can produce vortex shedding alternately, and when vortex shedding frequency is close with the pipeline natural frequency of vibration, the vibration of pipeline will force vortex shedding frequency to be fixed near the pipeline natural frequency of vibration, thus " locking " phenomenon occurs.Vortex-induced vibration and " locking " phenomenon of pipeline are the principal elements causing pipeline gas engineering, fatigue, even destroy.
At present, studying the most reliable of multispan submarine pipeline vortex-induced vibration phenomenon is model tests with the most effective means.By model test, can omnibearing observation vortex-induced vibration phenomenon and main fluid-wall interaction feature thereof, obtain reliable test findings, be used for the precision of the theoretical and numerical model of effect.Better can be probed into the genesis mechanism of multispan submarine pipeline vortex-induced vibration by the mode of experimental test, necessary test reference and technical support are provided for engineering is actual.
Through finding the investigation of prior art document, the present stage research of multispan pipeline vortex-induced vibration is carried out also very insufficient, and the research of test aspect far lags behind the demand of engineering reality.The MARINTEK research institution of Norway has carried out the vortex-induced vibration test of part multispan pipeline during 2000 to 2003, and perfect further specification DNV-RP-F105 (2006), article " VIVresponseoflongfreespanningpipelines " (long free suspended span pipeline vortex-induced vibration response investigations) in 21 ocean, the boundary offshores of to hold for 2002 and polar region engineering international conference describes test details in detail, adopt the supporting role of Hookean spring simulation multistage suspended span, add the disturbance to Inlet-air Velocity Distribution, and, present stage, the Test And Research Work of inclination angle incoming flow multispan pipeline had no report.Lack rational test unit, simulation multispan pipeline across shoulder supporting role, and all applicable in different incoming flow modes, be the basic reason causing above-mentioned present situation.
Utility model content
The deficiency of the utility model for the experimental study of multispan pipeline and the difficult point of existence, provide the bracing or strutting arrangement of pipeline model in the test of multispan submarine pipeline vortex-induced vibration, utilize this device supporting pipeline model can the boundary condition of simulated sea bottom suspended span pipeline span centre, experimental study is carried out to multispan pipeline, probe into its vortex-induced vibration mechanism, necessary reference and reference are provided for engineering is actual.Namely this device can be used as the support of submarine pipeline model under down-flowing incoming in addition, also can be used as inclination angle to flow down the support of (i.e. incoming flow and submarine pipeline out of plumb) submarine pipeline model.
In order to solve the problems of the technologies described above, the bracing or strutting arrangement of pipeline model in the multispan submarine pipeline vortex-induced vibration test that the utility model proposes, comprises fixing supporting pillar, rotatable supporting pillar and multiple pipeline model and supports clamp, top and the middle part of described fixing supporting pillar are respectively equipped with web joint, and the bottom of described fixing supporting pillar is fixed with fixed head, and described fixed head and described fixing supporting pillar are in being arranged vertically, and described fixed head is provided with two the first through holes, the top of described rotatable supporting pillar is fixed with angle fixed head, and the both sides, middle part of described rotatable supporting pillar are welded with rope ruggedized construction, and the bottom of described rotatable supporting pillar is connected with a pipeline model clamp, described angle fixed head is provided with four group of second through hole that two is a group, on described angle fixed head, the second through hole with the position relationship of the first through hole on described fixed head is: the centre distance often organizing the second through hole and two the first through holes is identical, the line of centres of four group of second through hole intersects at an A, described some A overlaps with the mid point of the line of centres often organizing the second through hole, the line of centres of four group of second through hole is designated as line of centres L1 respectively, line of centres L2, line of centres L3 and line of centres L4, described line of centres L1 overlaps with the horizontal projection of the line of centres of two the first through holes, line of centres L2, line of centres L3 and line of centres L4 is 15 degree with the angle of line of centres L1 successively, 30 degree and 45 degree, be connected with the fixed head coupling bolt arranged in wherein one group of second through hole on described angle fixed head by two the first through holes on described fixed head between described fixing supporting pillar and described rotatable supporting pillar, each pipeline model clamp comprises the plate body be made up of two half of docking, the joint of described plate body is provided with supported hole, the upper end of two half is fixed by screw and described rotatable supporting pillar, and the lower end of two half is fixed by screw and a clamp fixed head, on four pipeline model clamps, the axis of supported hole and the angle of plate body thickness direction are respectively 0 degree, 15 degree, 30 degree and 45 degree.
Compared with prior art, the beneficial effects of the utility model are:
The utility model solves the applying problem that in the test of multispan submarine pipeline vortex-induced vibration, multispan supports, can simulate submarine pipeline under the incoming flow of multiple inclination angle across to support.Rotatable supporting pillar in the utility model is aerofoil profile, reduces the interference of multispan supporting construction stream field to greatest extent.Rotatable supporting pillar two ends are fixed by reinforcing rope, and pulling force stretcher adjustment rope pull size, enhances the stability that multispan supports.The processing of the utility model device is simple, easy to use, is easy to promote.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model multispan bracing or strutting arrangement;
Fig. 2 is the right view of the bracing or strutting arrangement of multispan shown in Fig. 1;
Fig. 3 is the vertical view of the bracing or strutting arrangement of multispan shown in Fig. 1;
Fig. 4 is the upward view after angle fixed head 4 is connected with rotatable supporting pillar 7;
Fig. 5-1 is attack incoming flow is 0 degree of bottom plate 3 and angle fixed head 4 connection diagram;
Fig. 5-2 is attack incoming flows is 15 degree of bottom plates 3 and angle fixed head 4 connection diagram;
Fig. 5-3 is attack incoming flows is 30 degree of bottom plates 3 and angle fixed head 4 connection diagram;
Fig. 5-4 is attack incoming flows is 45 degree of bottom plates 3 and angle fixed head 4 connection diagram;
Fig. 6 is rotatable supporting pillar 7, clamp 8 in Fig. 1, the decomposition texture enlarged drawing of clamp fixed head 9;
Fig. 7 is rotatable supporting pillar 7, clamp 8 in Fig. 1, and enlarged drawing is looked on a left side for clamp fixed head 9;
The schematic diagram of Fig. 8-1 to be clamp 8 described in Fig. 2 be 45 degree of clamps;
The schematic diagram of Fig. 8-2 to be clamps 8 described in Fig. 2 be 30 degree of clamps;
The schematic diagram of Fig. 8-3 to be clamps 8 described in Fig. 2 be 15 degree of clamps;
Fig. 9-1 is the right view after 45 degree of clamps shown in Fig. 8-1 are connected with rotatable supporting pillar 7 and clamp fixed head 9;
Fig. 9-2 is the right views after 30 degree of clamps shown in Fig. 8-2 are connected with rotatable supporting pillar 7 and clamp fixed head 9;
Fig. 9-3 is the right views after 15 degree of clamps shown in Fig. 8-3 are connected with rotatable supporting pillar 7 and clamp fixed head 9;
Figure 10 is the amplification inclinating view after the fixed head of angle shown in Fig. 44 is connected with rotatable supporting pillar 7.
In figure: 1-fixes supporting pillar, 2-web joint, 3-fixed head, 4-angle fixed head, 5-fixed head coupling bolt, 6-reinforces rope attaching nut, the rotatable supporting pillar of 7-, 8-pipeline model clamp, 9-clamp fixed head.
Embodiment
Be described in further detail technical solutions of the utility model below in conjunction with the drawings and specific embodiments, described specific embodiment only explains the utility model, not in order to limit the utility model.
As shown in Figure 1, Figure 2 and Figure 3, the bracing or strutting arrangement of a kind of multispan submarine pipeline vortex-induced vibration test of the utility model, comprises fixing supporting pillar 1, rotatable supporting pillar 7 and multiple pipeline model and supports clamp 8.
Top and the middle part of described fixing supporting pillar 1 are respectively equipped with web joint 2, and the bottom of described fixing supporting pillar 1 is fixed with fixed head 3, and described fixed head 3 is with described fixing supporting pillar 1 in being arranged vertically, and described fixed head 3 is provided with two the first through holes.
The top of described rotatable supporting pillar 7 is fixed with angle fixed head 4, and the both sides, middle part of described rotatable supporting pillar 7 are welded with rope ruggedized construction, and the bottom of described rotatable supporting pillar 7 is connected with a pipeline model clamp 8.
Described angle fixed head 4 is provided with four group of second through hole that two is a group, on described angle fixed head 4, the second through hole with the position relationship of the first through hole on described fixed head 3 is: the centre distance often organizing the second through hole and two the first through holes is identical, the line of centres of four group of second through hole intersects at an A, described some A overlaps with the mid point of the line of centres often organizing the second through hole, the line of centres of four group of second through hole is designated as line of centres L1 respectively, line of centres L2, line of centres L3 and line of centres L4, as shown in Figure 10, described line of centres L1 overlaps with the horizontal projection of the line of centres of two the first through holes, line of centres L2, line of centres L3 and line of centres L4 is 15 degree with the angle of line of centres L1 successively, 30 degree and 45 degree, as shown in Fig. 4, Fig. 5-1, Fig. 5-2, Fig. 5-3 and Fig. 5-4.
Be connected with the fixed head coupling bolt 5 arranged in wherein one group of second through hole on described angle fixed head 4 by two the first through holes on described fixed head 3 between described fixing supporting pillar 1 and described rotatable supporting pillar 7.
As shown in Figure 6 and Figure 7, each pipeline model clamp 8 comprises the plate body be made up of two half of docking, the joint of described plate body is provided with supported hole, and the upper end of two half is fixed by screw and described rotatable supporting pillar 7, and the lower end of two half is fixed by screw and a clamp fixed head 9; On four pipeline model clamps 8, the axis of supported hole and the angle of plate body thickness direction are respectively 0 degree, 15 degree, 30 degree and 45 degree, as shown in Fig. 8-1, Fig. 8-2, Fig. 8-3, Fig. 9-1, Fig. 9-2 and Fig. 9-3.
Although be described the utility model by reference to the accompanying drawings above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; when not departing from the utility model aim, can also make a lot of distortion, these all belong within protection of the present utility model.
Claims (1)
1., for a multispan bracing or strutting arrangement for multispan submarine pipeline vortex-induced vibration test, comprise fixing supporting pillar (1), rotatable supporting pillar (7) and multiple pipeline model and support clamp (8); It is characterized in that:
Top and the middle part of described fixing supporting pillar (1) are respectively equipped with web joint (2), the bottom of described fixing supporting pillar (1) is fixed with fixed head (3), described fixed head (3) and described fixing supporting pillar (1) are in being arranged vertically, and described fixed head (3) is provided with two the first through holes;
The top of described rotatable supporting pillar (7) is fixed with angle fixed head (4), the both sides, middle part of described rotatable supporting pillar (7) are welded with rope ruggedized construction, and the bottom of described rotatable supporting pillar (7) is connected with a pipeline model clamp (8);
Described angle fixed head (4) is provided with four group of second through hole that two is a group, upper second through hole of described angle fixed head (4) with the position relationship of upper first through hole of described fixed head (3) is: the centre distance often organizing the second through hole and two the first through holes is identical, the line of centres of four group of second through hole intersects at an A, described some A overlaps with the mid point of the line of centres often organizing the second through hole, the line of centres of four group of second through hole is designated as line of centres L1 respectively, line of centres L2, line of centres L3 and line of centres L4, described line of centres L1 overlaps with the horizontal projection of the line of centres of two the first through holes, line of centres L2, line of centres L3 and line of centres L4 is 15 degree with the angle of line of centres L1 successively, 30 degree and 45 degree,
Be connected with the fixed head coupling bolt (5) arranged in wherein one group of second through hole on described angle fixed head (4) by two the first through holes on described fixed head (3) between described fixing supporting pillar (1) and described rotatable supporting pillar (7);
Each pipeline model clamp (8) comprises the plate body be made up of two half of docking, the joint of described plate body is provided with supported hole, the upper end of two half is fixed by screw and described rotatable supporting pillar (7), and the lower end of two half is fixed by screw and a clamp fixed head (9); Four upper axis of supported hole of pipeline model clamp (8) and the angle of plate body thickness direction are respectively 0 degree, 15 degree, 30 degree and 45 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520493310.1U CN205175638U (en) | 2015-07-09 | 2015-07-09 | A multispan strutting arrangement for multispan submarine pipeline vortex -induced vibration testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520493310.1U CN205175638U (en) | 2015-07-09 | 2015-07-09 | A multispan strutting arrangement for multispan submarine pipeline vortex -induced vibration testing |
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| Publication Number | Publication Date |
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| CN205175638U true CN205175638U (en) | 2016-04-20 |
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|---|---|---|---|
| CN201520493310.1U Expired - Fee Related CN205175638U (en) | 2015-07-09 | 2015-07-09 | A multispan strutting arrangement for multispan submarine pipeline vortex -induced vibration testing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990681A (en) * | 2015-07-09 | 2015-10-21 | 天津大学 | Multi-span supporting device for vortex-induced vibration test of multi-span submarine pipeline |
-
2015
- 2015-07-09 CN CN201520493310.1U patent/CN205175638U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990681A (en) * | 2015-07-09 | 2015-10-21 | 天津大学 | Multi-span supporting device for vortex-induced vibration test of multi-span submarine pipeline |
| CN104990681B (en) * | 2015-07-09 | 2018-02-23 | 天津大学 | A kind of multispan support meanss for the experiment of multispan submarine pipeline vortex-induced vibration |
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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 |
Granted publication date: 20160420 Termination date: 20160709 |
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| CF01 | Termination of patent right due to non-payment of annual fee |