CN105203281A - Testing device for local flow rate increasing dip-angle incoming flow multi-span seabed pipeline vortex-induced vibration - Google Patents
Testing device for local flow rate increasing dip-angle incoming flow multi-span seabed pipeline vortex-induced vibration Download PDFInfo
- Publication number
- CN105203281A CN105203281A CN201510601049.7A CN201510601049A CN105203281A CN 105203281 A CN105203281 A CN 105203281A CN 201510601049 A CN201510601049 A CN 201510601049A CN 105203281 A CN105203281 A CN 105203281A
- Authority
- CN
- China
- Prior art keywords
- angle
- degree
- fixed head
- hole
- centres
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a testing device for local flow rate increasing dip-angle incoming flow multi-span seabed pipeline vortex-induced vibration. The testing device comprises a seabed pipeline model, a transverse test supporting rack and a flow rate increasing device. A multi-span supporting device is arranged between the middle of the seabed pipeline model and the transverse test supporting rack. The multi-span supporting device comprises fixed and rotatable supporting columns and multiple pipeline model supporting clamping plates. The seabed pipeline model is sleeved with the flow rate increasing device which comprises a flow rate increasing cover and a rotatable supporting device. The flow rate increasing cover comprises rate increasing sections and flow stabilizing sections which are sequentially arranged in the water flow direction. The rate increasing sections are of horn shapes. The openings of the flow stabilizing sections and small openings of the horn shapes are consistent. The rotatble supporting device is connected between the transverse test supporting rack and the flow rate increasing large cover. According to the testing device, dip-angle incoming flow conditions and boundary conditions in spans of a seabed suspended span pipeline can be simulated, testing study is carried out on the multi-span pipeline, the vortex-induced vibration occurrence mechanism is explored, and necessary reference is provided for engineering practice.
Description
Technical field
What the present invention relates to is a kind of test unit of field of ocean engineering, and specifically, what relate to is that a kind of in-situ velocity increases inclination angle incoming flow multispan submarine pipeline vortex-induced vibration test unit.
Background technology
Day by day deficient with landing field petroleum resources, the exploitation of Marine oil and gas resource obtains fast development, and the quantity of subsea pipeline increases year by year.Because submarine topography is complicated, bad environments, submarine pipeline inevitably defines suspended span section, even multi-span.When seawater flows through suspended span pipeline, pipeline trailing edge will 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 and fatigure failure.It is especially noted that the ocean current that submarine pipeline suffers washes away sometimes with inclination angle, namely come flow path direction and submarine pipeline out of plumb, research inclination angle uniform incoming flow condition multispan submarine pipeline vortex-induced vibration has important theory and realistic meaning.
At present, studying the most reliable of inclination angle uniform incoming flow condition multispan submarine pipeline vortex-induced vibration phenomenon is model tests with the most effective means.By model test, than more comprehensively observing that vortex-induced vibration phenomenon and principal character and inclination angle incoming flow are on the impact of vortex-induced vibration, test findings comparatively reliably can be obtained.Test findings can be used to the precision of effect theory and numerical model.Better can be probed into the mechanism of inclination angle uniform incoming flow condition multispan submarine pipeline vortex-induced vibration and suppression by the mode of experimental test, accumulate experience for engineering is actual.The suppression of submarine pipeline vortex-induced vibration is significant for the engineering safety in the exploitation of marine oil.
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.
But in Practical Project reality, submarine pipeline axially also not exclusively overlaps with incoming flow vertical direction, there is certain angle of inclination.The existence at inclination angle makes multispan submarine pipeline vortex-induced vibration become very complicated, still lacks relevant research work so far.Meanwhile, be not unalterable in the unsettled section of flow velocity cross section along pipeline axial, there is the situation that in-situ velocity increases.Therefore, design a set of can the increase of test simulation in-situ velocity, inclination angle incoming flow, again can realize multispan pipeline vortex-induced vibration measure test unit imperative.
Summary of the invention
The deficiency that the inclination angle inlet flow conditions multispan pipeline experimental study that the present invention is directed to band flow velocity aggrandizement apparatus exists, provide the multispan pipeline test unit that locally can increase flow velocity, the boundary condition of inclination angle inlet flow conditions and free spanning submarine pipeline span centre can be simulated, experimental study is carried out to multispan pipeline, probe into its vortex-induced vibration genesis mechanism, necessary reference and reference are provided for engineering is actual.
In order to solve the problems of the technologies described above, a kind of in-situ velocity of the present invention increases inclination angle incoming flow multispan submarine pipeline vortex-induced vibration test unit, comprise submarine pipeline model, transverse test support, flow velocity aggrandizement apparatus, trailer, strain acquirement instrument and computing machine, described submarine pipeline model is through the big hole of flow velocity aggrandizement apparatus side, its one end is provided with first end bracing or strutting arrangement, the other end of described submarine pipeline model is provided with the second end bracing or strutting arrangement, the middle part of described submarine pipeline model is provided with multispan bracing or strutting arrangement, described first end bracing or strutting arrangement is connected with the two ends of described transverse test support respectively with the top of the second end bracing or strutting arrangement, the top of described multispan bracing or strutting arrangement is connected with the middle part of described transverse test support, described transverse test support is fixed on the bottom of described trailer, described submarine pipeline model comprises some wires and a thin-wall copper pipe, and the external diameter of described wire is 0.3mm, and described wire is 7 core wires, and the external diameter of described thin-wall copper pipe is 8mm, wall thickness is 1mm, outwards being provided with some layers of heat-shrink tube and one deck silicone tube of mutual close contact from the outside surface of described thin-wall copper pipe successively, being provided with multi-disc between described thin-wall copper pipe and described heat-shrink tube for gathering the resistance strain gage of strain, described resistance strain gage, be connected with one end of wire by connection terminal, the other end of wire extends one end of submarine pipeline model, one end of described submarine pipeline model is connected with the first column joint by pin, and the other end of described submarine pipeline model is connected with the second column joint by pin, described transverse test support comprises subject beam, and two side roof parts of described subject beam are provided with angle scale respectively, the top of described subject beam is provided with channel-section steel, and described trailer support is on channel-section steel, described first end bracing or strutting arrangement comprises the first stay pipe of vertical direction, the top of described first stay pipe is connected with the first horizontally disposed angle board, the bottom of described first stay pipe is connected with the first back up pad, the inner side of described first back up pad is bolted first fair water fin parallel with described first back up pad, the bottom of described first fair water fin is provided with a through hole, a universal coupling is provided with in described through hole, one end of described universal coupling is fixed in the first back up pad by universal coupling screw, the other end of described universal coupling is connected with the first column joint on described submarine pipeline model, described the second end bracing or strutting arrangement comprises the second stay pipe of vertical direction, the top of described second stay pipe is connected with the second horizontally disposed angle board, the bottom of described second stay pipe is connected with the second back up pad, the inner side of described second back up pad is bolted second fair water fin parallel with described second back up pad, the bottom of described second fair water fin is provided with a rectangle gap, be provided with angle clamp in described rectangle gap, described angle clamp is provided with a Pipe installing hole, include four angle clamps in this test unit, the axis in the Pipe installing hole on each angle clamp and the angle of angle clamp thickness direction are respectively 0 degree, 15 degree, 30 degree, 45 degree, the outside of described second back up pad is provided with a pulley, is provided with pulley base cushion block between the pulley base of described pulley and the second back up pad, and described pulley base cushion block is wedge, and the below described second back up pad being positioned at pulley base is respectively equipped with a wire rope via hole, include three pulley base cushion blocks in this test unit, the inclined-plane on each pulley base cushion block and the angle between the second back up pad surface of contact are respectively 15 degree, 30 degree, 45 degree, on described subject beam, be positioned at and be connected with a pulling force sensor with the link side of the second end bracing or strutting arrangement, the other end of described pulling force sensor is connected with pulling force stretcher and tension spring in turn, the second column joint on submarine pipeline model, be connected with wire rope through walking around the other end of pulley to tension spring after the wire rope via hole in the second back up pad, the axis of described wire rope and described submarine pipeline mould is in same plane, the top of described multispan bracing or strutting arrangement is connected with the middle part of described transverse test support, described multispan bracing or strutting arrangement comprises fixing supporting pillar, rotatable supporting pillar and multiple pipeline model and supports clamp, described submarine pipeline model is set with flow velocity aggrandizement apparatus, and described flow velocity aggrandizement apparatus comprises flow velocity and increases cover and rotatable supportive device, and described rotatable supportive device comprises fixing supporting pillar and rotatable supporting pillar, 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 and reinforce rope attaching nut, 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 junction of four group of second through hole and some 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 support column, the bottom of the rotatable supporting pillar in described multispan bracing or strutting arrangement (is connected with a pipeline model clamp, 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, between the reinforcing rope attaching nut and described transverse test support of the welding of the both sides, middle part of described rotatable supporting pillar, be respectively equipped with oblique pull wire rope, described oblique pull wire rope is connected with pulling force stretcher, described flow velocity increases cover and comprises the speedup section and steady flow segment of arranging in turn by water (flow) direction, described speedup section flare, the water inlet end of described speedup section is flaring big opening end, the water side of described speedup section is flaring osculum end, and openings of sizes and the flaring osculum end of described steady flow segment are in the same size, the flow velocity multiple that the described water inlet end of speedup section and the area ratio of water side will increase for this flow velocity aggrandizement apparatus, described steady flow segment is provided with the through hole passed for described submarine pipeline model, the top of described rotatable supportive device is fixed on transverse test support, and bottom and the described flow velocity of described rotatable supportive device increase to cover and weld.
Compared with prior art, the invention has the beneficial effects as follows:
The invention solves the design problem of flow velocity aggrandizement apparatus in the test of multispan submarine pipeline vortex-induced vibration and the applying problem of multispan support, inclination angle inlet flow conditions can be simulated, augmenting portion pipe flow speed, more accord with oceanographic engineering actual condition simultaneously.Supporting pillar in the present invention is aerofoil profile, reduces the interference of multispan bracing or strutting arrangement stream field to greatest extent.Supporting pillar two ends are fixed by wire rope and pulling force stretcher, enhance the stability that multispan supports.Apparatus of the present invention simplicity of design is exquisite, and process operation is convenient, cheap, increases flow velocity.It is the rig for testing that under the inclination angle inlet flow conditions of research band flow velocity aggrandizement apparatus, multispan submarine pipeline vortex-induced vibration is important, is with a wide range of applications.
Accompanying drawing explanation
Fig. 1 is the inclination angle inlet flow conditions multispan submarine pipeline vortex-induced vibration test unit structural representation with flow velocity aggrandizement apparatus in the present invention;
Fig. 2-1 is naked pipe formula submarine pipeline model and two end connector schematic diagram in the present invention;
Fig. 2-2 is with the submarine pipeline model of spiral tubulation and two end connector schematic diagram in the present invention;
Fig. 3 is the vertical view of the support of transverse test shown in Fig. 1;
Fig. 4 is the right view of the support of transverse test shown in Fig. 3;
Fig. 5 is first, second end bracing or strutting arrangement shown in Fig. 1 and submarine pipeline model coupling part schematic diagram;
Fig. 6 is the structural representation of back up pad shown in Fig. 1;
Fig. 7 is the structural representation of fair water fin shown in Fig. 1;
Fig. 8 is the vertical view of transverse test support and trailer mutual alignment one;
Fig. 9 be the support of transverse test shown in Fig. 8 and trailer mutual alignment one right view;
The vertical view of Figure 10-1 transverse test support and trailer mutual alignment two;
Figure 10-2 is vertical views of transverse test support and trailer mutual alignment three;
Figure 10-3 is vertical views of transverse test support and trailer mutual alignment four;
Figure 11 is the structural representation of angle scale;
Figure 12-1 is inclination angle schematic diagram between pipeline and incoming flow under state shown in Figure 10-1;
Figure 12-2 is inclination angle schematic diagram between pipeline and incoming flow under state shown in Figure 10-2;
Figure 12-3 is inclination angle schematic diagram between pipeline and incoming flow under state shown in Figure 10-3;
Figure 13-1 is the front view of pulley base cushion block;
Figure 13-2 is left views of the cushion block of pulley base shown in Figure 13-1;
Figure 13-3 is vertical views of the cushion block of pulley base shown in Figure 13-1;
Figure 14 is rotatable supportive device (remove pipeline model and support the rotatable supportive device that clamp 53 and clamp fixed head 59 the are flow velocity aggrandizement apparatus) schematic diagram of multispan in the present invention;
Figure 15 is the side view of the rotatable supportive device (remove pipeline model and support the rotatable supportive device that clamp 53 and clamp fixed head 59 are flow velocity aggrandizement apparatus) of multispan shown in Figure 14;
Figure 16 is the vertical view of the rotatable supportive device (remove pipeline model and support the rotatable supportive device that clamp 53 and clamp fixed head 59 are flow velocity aggrandizement apparatus) of multispan shown in Figure 14;
Figure 17-1 is the upward view after angle fixed head 56 is connected with rotatable supporting pillar 52;
Figure 17-2 is the amplification inclinating views after the fixed head of angle shown in Figure 17-1 56 is connected with rotatable supporting pillar 52;
Figure 18-1 is inclination angle incoming flow is 0 degree of bottom plate and angle fixed head 56 connection diagram;
Figure 18-2 is inclination angle incoming flows is 15 degree of bottom plates and angle fixed head 56 connection diagram;
Figure 18-3 is inclination angle incoming flows is 30 degree of bottom plates and angle fixed head 56 connection diagram;
Figure 18-4 is inclination angle incoming flows is 45 degree of bottom plates and angle fixed head 56 connection diagram;
Figure 19 is rotatable supporting pillar 52, angle clamp 45 in Figure 14, the decomposition texture enlarged drawing of clamp fixed head 59;
Figure 20 is rotatable supporting pillar 52, angle clamp 45 in Figure 14, and enlarged drawing is looked on a left side for clamp fixed head 59;
The schematic diagram of Figure 21-1 to be the clamp of angle described in Figure 20 be 45 degree of clamps;
The schematic diagram of Figure 21-2 to be the clamps of angle described in Figure 20 be 30 degree of clamps;
The schematic diagram of Figure 21-3 to be the clamps of angle described in Figure 20 be 15 degree of clamps;
Figure 22-1 is the right view after 45 degree of clamps shown in Figure 21-1 are connected with rotatable supporting pillar 52 and clamp fixed head 59;
Figure 22-2 is the right views after 30 degree of clamps shown in Figure 21-2 are connected with rotatable supporting pillar 52 and clamp fixed head 59;
Figure 22-3 is the right views after 15 degree of clamps shown in Figure 21-3 are connected with rotatable supporting pillar 52 and clamp fixed head 59;
Figure 23 is the submarine pipeline model hierarchy schematic diagram with spiral strake;
Figure 24-1 is the front view that in Fig. 1, flow velocity increases cover;
Figure 24-2 is side views that in Fig. 1, flow velocity increases cover;
Figure 24-3 is vertical views that in Fig. 1, flow velocity increases cover;
Figure 25 is that rotatable supportive device and flow velocity increase the connection diagram of covering;
Figure 26-1 is the rotatable supportive device schematic diagram of flow velocity aggrandizement apparatus;
Figure 26-2 is side views of the rotatable supportive device of the aggrandizement apparatus of flow velocity shown in Figure 26-1.
In figure:
1-submarine pipeline model 2-transverse test support 3-first end bracing or strutting arrangement
4-the second end bracing or strutting arrangement 5-multispan bracing or strutting arrangement 6-pin
7-first column joint 8-second column joint 9-pulley
10 pulley base cushion block 11-pulling force sensor 12-pulling force stretchers
13-tension spring 14-wire rope 15-oblique pull wire rope
17-down tube 18-fair water fin fixed screw 21-angle scale
28-flow velocity aggrandizement apparatus 29-rotatable supportive device 30-flow velocity increases cover
31-second fair water fin 32-first angle board 303-big hole
304-upper following wall about 305-limit wall 306-speedup section
307-steady flow segment 41-second stay pipe 42-second angle board
43-second back up pad 44-second fair water fin 45-angle clamp
51-fixes supporting pillar 52-rotatable supporting pillar 53-pipeline model and supports clamp
54-web joint 55-fixed head 56-angle fixed head
57-reinforces rope attaching nut 58-fixed head coupling bolt 59-clamp fixed head
101-thin-wall copper pipe 102-heat-shrink tube 103-silicone tube
104-resistance strain gage 105-silicone band
Embodiment
Be described in further detail technical solution of the present invention below in conjunction with the drawings and specific embodiments, described specific embodiment only explains the present invention, not in order to limit the present invention.
As shown in Figure 1, a kind of in-situ velocity increases inclination angle incoming flow multispan submarine pipeline vortex-induced vibration test unit, comprise submarine pipeline model 1, transverse test support 2, flow velocity aggrandizement apparatus 28, trailer, strain acquirement instrument and computing machine, described submarine pipeline model 1 one end is provided with first end bracing or strutting arrangement 3, the other end of described submarine pipeline model 1 is provided with the second end bracing or strutting arrangement 4, the middle part of described submarine pipeline model 1 is provided with multispan bracing or strutting arrangement 5, described first end bracing or strutting arrangement 3 is connected with the two ends of described transverse test support 2 respectively with the top of the second end bracing or strutting arrangement 4, the top of described multispan bracing or strutting arrangement 5 is connected with the middle part of described transverse test support 2 bottom that described transverse test support 2 is fixed on described trailer.
As shown in Fig. 2-1, Fig. 2-2 and Figure 16, described submarine pipeline model 1 can be naked pipe structure, also can with spiral strake structure, if naked pipe structure, then this submarine pipeline model 1 comprises some wires and a thin-wall copper pipe 101, the external diameter of described wire is 0.3mm, and described wire is 7 core wires, and the external diameter of described thin-wall copper pipe 101 is 8mm, wall thickness is 1mm; As shown in figure 23, some layers of heat-shrink tube 102 and one deck silicone tube 103 of mutual close contact is outwards provided with successively from the outside surface of described thin-wall copper pipe 101, multi-disc is provided with for gathering the resistance strain gage 104 of strain between described thin-wall copper pipe 101 and described heat-shrink tube 102, described resistance strain gage 104 is connected with one end of wire by connection terminal, and the other end of wire extends one end of submarine pipeline model 1; One end of described submarine pipeline model 1 is connected with the first column joint 7 by pin 6, and the other end of described submarine pipeline model 1 is connected with the second column joint 8 by pin 6.If with spiral strake structure, then on above-mentioned silicone tube 103 outside surface, be provided with the silicone band 105 of many helically wire, the transversal section of described silicone band 105 is identical with the shape of the transversal section of test pipe spiral strake.
As shown in Figure 3 and Figure 4, described transverse test support 2 comprises subject beam, and two side roof parts of described subject beam are provided with angle scale 21 respectively, and the top of described subject beam is provided with channel-section steel, and described trailer support is on channel-section steel; The subject beam of transverse test support 2 is rectangular cross-sectional steel pipe and square-section steel pipe.The both ends of transverse test support 2 connect first, second end bracing or strutting arrangement of variable-angle and the angle board 32 (or 42) at first, second bracing or strutting arrangement top, end of each installation angle scale 21 and variable-angle is fitted.Thin-walled wooden case is installed in the inside of transverse test support 2, and thin-walled wooden case inside is placed with rectangular parallelepiped keg float.
As the schematic diagram that Figure 11 is angle scale, angle board.In order to make first, second fair water fin 31 with 41 all the time with to carry out flow path direction parallel, need the position of adjusting angle plate and angle scale.When the axial inclination of incoming flow vertical direction and pipeline is 0 degree, angle board and angle scale should just in time overlap; When the axial inclination of incoming flow vertical direction and pipeline is 15 degree, the angle between angle board and angle scale 4 should be 15 degree; When the axial inclination of incoming flow vertical direction and pipeline is 30 degree, the angle between angle board and angle scale should be 30 degree; When the axial inclination of incoming flow vertical direction and pipeline is 45 degree, the angle between angle board and angle scale should be 45 degree.
As shown in Figure 5, described first end bracing or strutting arrangement 3 comprises the first stay pipe 31 of vertical direction, the top of described first stay pipe 31 is connected with the first horizontally disposed angle board 32, the bottom of described first stay pipe 31 is connected with the first back up pad 33, the inner side of described first back up pad 33 is bolted first fair water fin 34 parallel with described first back up pad 33, the bottom of described first fair water fin 34 is provided with a through hole, a universal coupling 35 is provided with in described through hole, one end of described universal coupling 35 is fixed in the first back up pad 33 by universal coupling screw 36, the other end of described universal coupling 35 is connected with the first column joint 7 on described submarine pipeline model 1, described the second end bracing or strutting arrangement 4 comprises the second stay pipe 41 of vertical direction, the top of described second stay pipe 41 is connected with the second horizontally disposed angle board 42, the bottom of described second stay pipe 41 is connected with the second back up pad 43, the inner side of described second back up pad 43 is bolted second fair water fin 44 parallel with described second back up pad 43, as shown in Figure 7, the bottom of described second fair water fin 44 is provided with a rectangle gap, be provided with angle clamp 45 in described rectangle gap, described angle clamp 45 is provided with a Pipe installing hole, include four angle clamps 45 in this test unit, the axis in the Pipe installing hole on each angle clamp 45 and the angle of angle clamp 24 thickness direction are respectively 0 degree, 15 degree, 30 degree, 45 degree, the outside of described second back up pad 43 is provided with a pulley 9, in order to make the pulley groove of pulley 9 on the extended line of submarine pipeline model 1, needing in the second back up pad 43, install the pulley cushion block 23 that can change angle, and then installing pulley 9.Namely between the pulley base and the second back up pad 43 of described pulley 9, be provided with pulley base cushion block, described pulley base cushion block is wedge, and the below described second back up pad 43 being positioned at pulley base is respectively equipped with a wire rope via hole; Three pulley base cushion blocks are included in this test unit, inclined-plane on each pulley base cushion block 10 and the angle between the second back up pad 43 surface of contact are respectively 15 degree, 30 degree, 45 degree, when the axial inclination of incoming flow vertical direction and pipeline is 15 degree, the varied angle pulley cushion block at 15 degree of angles is installed; When the axial inclination of incoming flow vertical direction and pipeline is 30 degree, the varied angle pulley cushion block at 30 degree of angles is installed; When the axial inclination of incoming flow vertical direction and pipeline is 45 degree, the varied angle pulley cushion block of 45 is installed.As shown in Figure 13-1, Figure 13-2 and Figure 13-3.
As shown in Figure 1, down tube 17 is connected with respectively between on the inner side of described first stay pipe 31 and subject beam and the inner side of described second stay pipe 41 and subject beam.As shown in Figure 5 and Figure 6, described first fair water fin 34 and the second fair water fin 44 are plastic plate, and described first fair water fin 34 and described second fair water fin 44 are respectively equipped with hog frame 36 and 46.
As shown in Figure 1, on described subject beam, be positioned at and be connected with a pulling force sensor 11 with the link side of the second end bracing or strutting arrangement 4, the other end of described pulling force sensor 11 is connected with pulling force stretcher 12 and tension spring 13 in turn; The second column joint 8 on submarine pipeline model 1, be connected with wire rope 14 through the other end walking around pulley 9 to tension spring 13 after the wire rope via hole in the second back up pad 43; The axis of described wire rope 17 and described submarine pipeline model 1 is in same plane.
Described variable-angle multispan bracing or strutting arrangement by fixing supporting pillar 51, fixed head 55, rotatable supporting pillar 52, web joint 54, angle fixed head 56, fixed head connecting screw 58, reinforce rope attaching nut 57, pipeline model supports clamp 53, clamp fixed head 59, pulling force stretcher 16 etc. and forms.As shown in Figure 14, Figure 15 and Figure 16, described multispan bracing or strutting arrangement 5 comprises fixing supporting pillar 51, rotatable supporting pillar 52 and multiple pipeline model and supports clamp 53; The xsect of fixing supporting pillar 51 and rotatable supporting pillar 52 is aerofoil profile, as shown in figures 14 and 17.Top and the middle part of described fixing supporting pillar 51 are respectively equipped with web joint 54, and the bottom of described fixing supporting pillar 51 is fixed with fixed head 55, and described fixed head 55 is with described fixing supporting pillar 51 in being arranged vertically, and described fixed head 55 is provided with two the first through holes; The top of described rotatable supporting pillar 52 is fixed with angle fixed head 56, and the both sides, middle part of described rotatable supporting pillar 52 are welded with and reinforce rope attaching nut 57, and the bottom of described rotatable supporting pillar 52 is connected with a pipeline model clamp 53.
As illustrated in figures 19 and 20, rotatable supporting pillar 52 is connected with primary screw with clamp 53, and the bottom of clamp 53 is fixed by primary screw clamp fixed head 59.Clamp 53 is made up of two half, and circular hole is opened at middle part, submarine pipeline model can be penetrated circular hole, and clamp 34 is fixed on rotatable supporting pillar 52, and bottom clamp fixed head 59 is reinforced.But the clamp 53 of different angles need be used when incoming flow and submarine pipeline model out of plumb.As shown in Figure 21-3 and Figure 22-3, when the axial inclination of incoming flow vertical direction and pipeline is 15 degree, the clamp of 15 degree is installed; As shown in Figure 21-2 and Figure 22-2, when the axial inclination of incoming flow vertical direction and pipeline is 30 degree, the clamp of 30 degree is installed; As shown in Figure 21-1 and Figure 22-1, when the axial inclination of incoming flow vertical direction and pipeline is 45 degree, the clamp of 45 degree is installed.As shown in Figure 14 and Figure 16, rotatable supporting pillar 52 both sides are welded with two and reinforce rope attaching nuts 57, and reinforcing rope can reinforcement by connection rope attaching nut 57 and pulling force stretcher 24, and is fixed on transverse test support 3.Adjusted the verticality of multispan support by the size of adjustment pulling force stretcher, and make bracing reinforcement.
As shown in Figure 17-1, the submarine pipeline supporting models that multiple hole can be inclination angle incoming flow opened by angle fixed head 56, namely described angle fixed head 56 is provided with four group of second through hole that two is a group, on described angle fixed head 56, on the second through hole and described fixed head 55, the position relationship of the first through hole is: as shown in Figure 17-2, often organize the second through hole identical with the centre distance of two the first through holes, the line of centres junction of four group of second through hole and some 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 58 arranged in wherein one group of second through hole on described angle fixed head 56 by two the first through holes on described fixed head 55 between described fixing supporting pillar 51 and described rotatable supporting pillar 52; Figure 18-1 is inclination angle incoming flow is 0 degree of bottom plate and angle fixed head 56 connection diagram; When the axial inclination of incoming flow vertical direction and pipeline is 15 degree, angle fixed head 56 is rotated 15 degree and be then connected, as shown in Figure 18-2 with fixed head screw 58; When the axial inclination of incoming flow vertical direction and pipeline is 30 degree, angle fixed head 56 is rotated 30 degree and be then connected, as shown in Figure 18-3 with fixed head screw 58; When the axial inclination of incoming flow vertical direction and pipeline is 45 degree, angle fixed head 56 is rotated 45 degree and be then connected, as shown in Figure 18-4 with fixed head screw 58.
Each pipeline model clamp 53 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 52, and the lower end of two half is fixed by screw and a clamp fixed head 59; On four pipeline model clamps 53, 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 Figure 21-1, Figure 21-2, Figure 21-3 and Figure 22-1, Figure 22-2, Figure 22-3.
Can be realized transverse test support by adjustment and be had different fixed angles between trailer, the middle part of transverse test support 2 is bolted in the bottom of trailer 20.Carry out flow inclination to change, transverse test support 2 is installed in corresponding angle fixing to trailer 20.When the axial inclination of incoming flow vertical direction and pipeline is 0 degree, transverse test support 2 is vertical with trailer 20 to be fixed, as shown in Figure 8 and Figure 9.When the axial inclination of incoming flow vertical direction and pipeline is 15 degree, transverse test support 2 is fixed, as Figure 10-1 in 15 degree of angles with trailer 20; When the axial inclination of incoming flow vertical direction and pipeline is 30 degree, transverse test support 2 is fixed, as Figure 10-2 in 30 degree of angles with trailer 20; When the axial inclination of incoming flow vertical direction and pipeline is 45 degree, transverse test support 2 is fixed, as Figure 10-3 in miter angle with trailer 20.If Figure 12-1, Figure 12-2 and Figure 12-3 is inclination angle schematic diagram between pipeline and incoming flow, wherein, Figure 12-1 represents that the axial inclination of incoming flow vertical direction and pipeline is 15 degree, Figure 12-2 represents that the axial inclination of incoming flow vertical direction and pipeline is 30 degree, and Figure 12-3 represents that the axial inclination of incoming flow vertical direction and pipeline is 45 degree.
As shown in Fig. 1, Figure 14 and Figure 15, oblique pull wire rope 15 is respectively equipped with between the reinforcing rope attaching nut 57 and described transverse test support 2 of the welding of the both sides, middle part of described rotatable supporting pillar 52, described oblique pull wire rope 15 is connected with pulling force stretcher 16, rotatable supporting pillar 52 is reinforced.
Described rotatable supportive device is formed by fixing supporting pillar 51, fixed head 55, rotatable supporting pillar 52, web joint 54, angle fixed head 56, fixed head connecting screw 58, reinforcing rope attaching nut 57, pulling force stretcher 12 etc.As shown in Figure 14, Figure 15 and Figure 16, described rotatable supportive device 29 comprises fixing supporting pillar 51, rotatable supporting pillar 52; The xsect of fixing supporting pillar 51 and rotatable supporting pillar 52 is aerofoil profile, as shown in FIG. 16 and 17.Top and the middle part of described fixing supporting pillar 51 are respectively equipped with web joint 54, and the bottom of described fixing supporting pillar 51 is fixed with fixed head 55, and described fixed head 55 is with described fixing supporting pillar 51 in being arranged vertically, and described fixed head 55 is provided with two the first through holes; The top of described rotatable supporting pillar 52 is fixed with angle fixed head 56, and the both sides, middle part of described rotatable supporting pillar 52 are welded with and reinforce rope attaching nut 57, and the bottom of described rotatable supporting pillar 52 increases cover 30 with a flow velocity and is connected, as shown in figure 25.Rotatable supporting pillar 52 both sides are welded with two and reinforce rope attaching nuts 57 as shown in figure 14, and reinforcing rope can reinforcement by connection rope attaching nut 57 and pulling force stretcher 12, and is fixed on transverse test support 3.Adjusted the verticality of rotatable supportive device by the size of adjustment pulling force stretcher, and make bracing reinforcement.
As shown in Figure 17-1, angle fixed head 56 is opened the flow velocity aggrandizement apparatus that multiple hole can be inclination angle incoming flow and is provided support, namely described angle fixed head 56 is provided with four group of second through hole that two is a group, on described angle fixed head 56, on the second through hole and described fixed head 55, the position relationship of the first through hole is: as shown in Figure 17-2, often organize the second through hole identical with the centre distance of two the first through holes, the line of centres junction of four group of second through hole and some 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 58 arranged in wherein one group of second through hole on described angle fixed head 56 by two the first through holes on described fixed head 55 between described fixing supporting pillar 51 and described rotatable supporting pillar 52; When the axial inclination of incoming flow vertical direction and pipeline is 15 degree, angle fixed head 56 is rotated 15 degree and be then connected, as shown in Figure 18-2 with fixed head screw 58; When the axial inclination of incoming flow vertical direction and pipeline is 30 degree, angle fixed head 56 is rotated 30 degree and be then connected, as shown in Figure 18-3 with fixed head screw 58; When the axial inclination of incoming flow vertical direction and pipeline is 45 degree, angle fixed head 56 is rotated 45 degree and be then connected, as shown in Figure 18-4 with fixed head screw 58.(the rotatable supportive device of multispan removes pipeline model and supports the rotatable supportive device that clamp 53 and clamp fixed head 59 are flow velocity aggrandizement apparatus, as shown in Figure 26-1 and Figure 26-2).
As shown in Figure 24-1,24-2,24-3.Described flow velocity increases open-ended before and after cover 30, there are upper following wall 304 and limit, left and right wall 305, its side view is tubaeform, flow velocity increases cover 30 internal flow, by the order that current flow through, be followed successively by speedup section 306 and steady flow segment 307, speedup section flow velocity increases cover 30 cross section and inwardly shrinks, steady flow segment cross sectional shape remains unchanged, current increase to steady flow segment 307 development stability through speedup section 306 speed, flow velocity increase cover 30 opens big hole 303 along the left and right Bian Bi of pipe fitting axial direction, guarantees that pipe fitting vibration can not be touched flow velocity and increase cover.Pipe fitting model increases the upper following wall 304 of cover apart from flow velocity, and more than 30 times, edge, front and back caliber, the inlet-duct area of speedup section and the ratio of discharge area coordinate decision by testing flow velocity multiple, the site test condition that will increase.
Trailer in the present invention is made up of power system, brake system, control system etc.Trailer is the carrier of transverse test support and part measuring and analysis system.
The part measuring and analysis system comprised in the present invention comprises, the formations such as resistance strain gage, connection terminal, wire, pulling force sensor, termination, strain acquirement instrument, robot calculator.Resistance strain gage connects connection terminal, and connection terminal connects wire, and wire connects strain acquirement instrument.
Extend wire outside submarine pipeline model 1 one end in the present invention and described pulling force sensor connects with described strain acquirement instrument, described strain acquirement instrument is connected with described computing machine.
Below introduce making and the installation process of the present embodiment device: before the test, first according to the yardstick of towing basin, the speed of trailer 20, the concrete condition of operating condition of test and the economy of test, obtain the concrete yardstick of submarine pipeline model 1.According to the yardstick of submarine pipeline model 1, the yardstick of trailer 20 and the concrete condition of operating condition of test and economy, determine transverse test support 3, flow velocity aggrandizement apparatus 28, first, second end bracing or strutting arrangement 3 and 4 of variable-angle, the material of the multispan bracing or strutting arrangement 5 of variable-angle and yardstick according to structure fabrication.The desirable respective market of each instrument and equipment of measuring and analysis system is bought.
For the submarine pipeline model with suppression structure, its manufacture process is as follows: before and after first marking along copper pipe axis direction in platform plane relatively, four parallel lines opposing upper and lower, determine strain gauge adhesion position.Copper pipe two ends are loaded onto respectively thick column joint and thin column joint.Remove the oxide layer of strain gauge adhesion position copper pipe surface, paste foil gauge, front and back foil gauge is mutually a pair, upper and lower foil gauge is mutually a pair, all adopt half-bridge connection, and connect wire by connection terminal, the filament wherein connected with connection terminal by foil gauge with thin adhesive tape and copper pipe surface separate, to realize insulation, proper amount of silicon rubber is coated with at strain gauge adhesion place, to reach the object of protection and waterproof, to draw the wire of each position to copper pipe two ends and with thin adhesive tape, wire is fixed along copper pipe axis direction, then some layers of heat-shrink tube (making its outside surface and silicone tube inside surface close contact) on overlapping outside copper pipe, last layer silicone tube is overlapped (if naked pipe structure outside heat-shrink tube, then complete making), from the left side of pipe, a pitch is divided into some parts, use helix mark locating ring to determine helix position in each position, use bonding three silica gel strips of helix cemented in place ring, the silica gel of the process not bonding silica gel strip position of silicone tube, make silica gel strip surface clean neatly smooth, bonding silica gel strip represents the spiral strake in vortex-induced vibration suppression, finally being coated with proper amount of silicon rubber at model two ends prevents model from intaking.
By transverse test support 2, first, second end bracing or strutting arrangement 3 and 4, the multispan bracing or strutting arrangement 5 of variable-angle installs, rotate the angle that first, second end bracing or strutting arrangement 3 and 4 of variable-angle makes its angle board corresponding in angle scale corresponding, even if first, second fair water fin and carry out flow path direction keeping parallelism.Corresponding varied angle clamp is arranged in the rectangle gap of the second fair water fin 44, and the varied angle pulley cushion block 23 of respective angles is arranged on wire rope by the second back up pad 43 of that side, then pulley 9 is arranged on the pulley cushion block 23 of varied angle.Flow velocity aggrandizement apparatus 28 is fixed on transverse test support by rotatable supportive device 29, rotatable supportive device 29 is connected with screw by web joint 54 with transverse test support 3, rotatable supporting pillar 52 both sides are welded with two and reinforce rope attaching nut 57, reinforcing rope can reinforcement by connection rope attaching nut 57 and pulling force stretcher 12, and is fixed on transverse test support 3.Adjusted the verticality of rotatable supportive device 29 by the size of adjustment pulling force stretcher 12, and make bracing reinforcement.Marine riser model 1 is increased the big hole 33 of cover 30 through flow velocity, the two ends of submarine pipeline model 1 are fixed on first, second end bracing or strutting arrangement 3 and 4 of variable-angle.The angle fixed head of the multispan bracing or strutting arrangement 5 of variable-angle is rotated corresponding angle fix, the clamp of respective angles is installed bottom rotatable supporting pillar 52, submarine pipeline model 1 is arranged in the hole of clamp and fixes.The pulling force stretcher 17 that adjustable rooting rope connects, to adjust the verticality of the multispan bracing or strutting arrangement of varied angle.The wire that submarine pipeline model 1 one end (or two ends) is drawn is extended to respectively the two ends of transverse test support 2 along first, second end bracing or strutting arrangement 3 and 4 of variable-angle.Whole test unit is placed in bottom trailer 20, with the loop wheel machine on trailer 20 top, test unit is sling, and make itself and trailer be that respective angles (15 degree, 30 degree, 45 degree) is arranged on trailer 20.Pulling force stretcher 24 is regulated to make end pulling force reach size needed for operating condition of test.Pulling force sensor is connected with strainmeter with wire, and strainmeter connects computing machine, and computer-internal is provided with corresponding data collection and analysis software.
After all appts device installs, need to debug.After debugging, can test by operating mode and test specification.
It should be noted last that: above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although above-described embodiment is to invention has been detailed description, those of ordinary skill in the art is to be understood that: still can to the present invention's amendment or equivalent replacement, and not departing from any amendment or the local replacement of the spirit and scope of the present invention, it all should be encompassed among right of the present invention.
Claims (4)
1. an in-situ velocity increases inclination angle incoming flow multispan submarine pipeline vortex-induced vibration test unit, comprise submarine pipeline model, transverse test support, trailer, strain acquirement instrument and computing machine, one end of described submarine pipeline model (1) is provided with first end bracing or strutting arrangement, the other end of described submarine pipeline model (1) is provided with the second end bracing or strutting arrangement, described first end bracing or strutting arrangement is connected with the two ends of described transverse test support (3) respectively with the top of the second end bracing or strutting arrangement, described transverse test support (3) is fixed on the bottom of described trailer,
Described submarine pipeline model (1) comprises some wires and a thin-wall copper pipe (101), and the external diameter of described wire is 0.3mm, and described wire is 7 core wires, and the external diameter of described thin-wall copper pipe (101) is 8mm, wall thickness is 1mm; Some layers of heat-shrink tube (102) and one deck silicone tube (103) of mutual close contact is outwards provided with successively from the outside surface of described thin-wall copper pipe (101), multi-disc is provided with for gathering the resistance strain gage (104) of strain, described resistance strain gage (104) between described thin-wall copper pipe (101) and described heat-shrink tube (102); Be connected with one end of wire by connection terminal, the other end of wire extends one end of submarine pipeline model (1); One end of described submarine pipeline model (1) is connected with the first column joint (5) by pin (7), and the other end of described submarine pipeline model (1) is connected with the second column joint (6) by pin (7);
Described transverse test support (3) comprises subject beam, and two side roof parts of described subject beam are provided with angle scale (21) respectively; The top of described subject beam is provided with channel-section steel, and described trailer support is on channel-section steel;
Described first end bracing or strutting arrangement comprises the first stay pipe of vertical direction, the top of described first stay pipe is connected with the first horizontally disposed angle board, the bottom of described first stay pipe is connected with the first back up pad, the inner side of described first back up pad is bolted first fair water fin parallel with described first back up pad, the bottom of described first fair water fin is provided with a through hole, a universal coupling (35) is provided with in described through hole, one end of described universal coupling (35) is fixed in the first back up pad by universal coupling screw (36), the other end of described universal coupling (35) is connected with the first column joint (5) on described submarine pipeline model,
Described the second end bracing or strutting arrangement comprises the second stay pipe of vertical direction, the top of described second stay pipe is connected with the second horizontally disposed angle board, the bottom of described second stay pipe is connected with the second back up pad, the inner side of described second back up pad is bolted second fair water fin parallel with described second back up pad, the bottom of described second fair water fin is provided with a rectangle gap, be provided with angle clamp in described rectangle gap, described angle clamp is provided with a standpipe mounting hole; Include four angle clamps in this test unit, the axis of the standpipe mounting hole on each angle clamp and the angle of angle clamp thickness direction are respectively 0 degree, 15 degree, 30 degree, 45 degree;
The outside of described second back up pad is provided with a pulley (9), pulley base cushion block (23) is provided with between the pulley base of described pulley (9) and the second back up pad, described pulley base cushion block (23) is wedge, and the below described second back up pad being positioned at pulley base is respectively equipped with a wire rope via hole; Include three pulley base cushion blocks (23) in this test unit, the inclined-plane on each pulley base cushion block (23) and the angle between the second back up pad (14) surface of contact are respectively 15 degree, 30 degree, 45 degree;
On described subject beam, be positioned at and be connected with a pulling force sensor (25) with the link side of the second end bracing or strutting arrangement, the other end of described pulling force sensor (11) is connected with pulling force stretcher (12) and tension spring (13) in turn; Described wire and described pulling force sensor (11) connect with described strain acquirement instrument, and described strain acquirement instrument is connected with described computing machine;
The second column joint (6) in marine riser model (1), be connected with wire rope through walking around the other end of described pulley (9) to tension spring (13) after the wire rope via hole in the second back up pad; The axis of described wire rope and described marine riser model (1) is in same plane;
It is characterized in that:
The middle part of described submarine pipeline model (1) is provided with multispan bracing or strutting arrangement (5), and the top of described multispan bracing or strutting arrangement (5) is connected with the middle part of described transverse test support (3); Described multispan bracing or strutting arrangement (5) comprises fixing supporting pillar (51), rotatable supporting pillar (52) and multiple pipeline model and supports clamp (53);
Described submarine pipeline model (1) is set with flow velocity aggrandizement apparatus (28), described flow velocity aggrandizement apparatus (28) comprises flow velocity and increases cover (30) and rotatable supportive device (29), and described rotatable supportive device (29) comprises fixing supporting pillar (51) and rotatable supporting pillar (52);
Top and the middle part of described fixing supporting pillar (51) are respectively equipped with web joint (54), the bottom of described fixing supporting pillar (51) is fixed with fixed head (55), described fixed head (55) and described fixing supporting pillar (51) are in being arranged vertically, and described fixed head (55) is provided with two the first through holes;
The top of described rotatable supporting pillar (52) is fixed with angle fixed head (56), and the both sides, middle part of described rotatable supporting pillar (52) are welded with and reinforce rope attaching nut (57), described angle fixed head (56) is provided with four group of second through hole that two is a group, upper second through hole of described angle fixed head (56) with the position relationship of upper first through hole of described fixed head (55) is: the centre distance often organizing the second through hole and two the first through holes is identical, the line of centres junction of four group of second through hole and some 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 (58) arranged in wherein one group of second through hole on described angle fixed head (56) by two the first through holes on described fixed head (55) between described fixing supporting pillar (51) and described rotatable support column (52),
The bottom of the rotatable supporting pillar (52) in described multispan bracing or strutting arrangement (5) is connected with a pipeline model clamp (53); Each pipeline model clamp (53) 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 (52), and the lower end of two half is fixed by screw and a clamp fixed head (59); Four upper axis of supported hole of pipeline model clamp (53) and the angle of plate body thickness direction are respectively 0 degree, 15 degree, 30 degree and 45 degree; Be positioned between the reinforcing rope attaching nut (57) of both sides, the middle part welding of described rotatable supporting pillar (52) and described transverse test support (2) and be respectively equipped with oblique pull wire rope (15), described oblique pull wire rope is connected with pulling force stretcher (12);
Described flow velocity increases cover (30) and comprises the speedup section (301) and steady flow segment (302) of arranging in turn by water (flow) direction, described speedup section (301) flare, the water inlet end of described speedup section (301) is flaring big opening end, the water side of described speedup section (301) is flaring osculum end, and openings of sizes and the flaring osculum end of described steady flow segment (302) are in the same size; The flow velocity multiple that the described water inlet end of speedup section (301) and the area ratio of water side will increase for this flow velocity aggrandizement apparatus (28);
Described steady flow segment (302) is provided with the through hole passed for described submarine pipeline model (1); The top of described rotatable supportive device (29) is fixed on transverse test support (3), and bottom and the described flow velocity of described rotatable supportive device (29) increase and cover (30) and weld.
2. in-situ velocity increases inclination angle incoming flow multispan submarine pipeline vortex-induced vibration test unit according to claim 1, it is characterized in that, silicone tube (56) outside surface of described marine riser model (1) is provided with the silicone band (27) of many helically wire, and the transversal section of described silicone band (27) is identical with the shape of the transversal section of test pipe spiral strake.
3. in-situ velocity increases inclination angle incoming flow multispan submarine pipeline vortex-induced vibration test unit according to claim 1, it is characterized in that, between on the inner side of described first stay pipe (13) and subject beam and the inner side of described second stay pipe (13) and subject beam, be connected with down tube (9) respectively.
4. in-situ velocity increases inclination angle incoming flow multispan submarine pipeline vortex-induced vibration test unit according to claim 1, it is characterized in that, described first fair water fin and the second fair water fin are plastic plate, and described first fair water fin and described second fair water fin are respectively equipped with hog frame (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510601049.7A CN105203281B (en) | 2015-09-18 | 2015-09-18 | Local velocity increases inclination angle incoming multispan submarine pipeline vortex-induced vibration experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510601049.7A CN105203281B (en) | 2015-09-18 | 2015-09-18 | Local velocity increases inclination angle incoming multispan submarine pipeline vortex-induced vibration experimental rig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105203281A true CN105203281A (en) | 2015-12-30 |
| CN105203281B CN105203281B (en) | 2018-03-23 |
Family
ID=54951079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510601049.7A Active CN105203281B (en) | 2015-09-18 | 2015-09-18 | Local velocity increases inclination angle incoming multispan submarine pipeline vortex-induced vibration experimental rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105203281B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269749A (en) * | 2018-11-12 | 2019-01-25 | 广西科技大学 | A kind of experimental tank of suspended span pipeline vortex-induced vibration test |
| CN112084560A (en) * | 2020-09-09 | 2020-12-15 | 长沙理工大学 | Vortex-induced vibration numerical simulation calculation method for multi-width bridge deck bridge |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2221033A (en) * | 1988-06-16 | 1990-01-24 | British Petroleum Co Plc | Method for measuring the natural vibrational frequency of a submarine pipeline free span |
| CN101089578A (en) * | 2007-07-12 | 2007-12-19 | 上海交通大学 | Vortex vibration testing device for flexible pipe mould vertical in towing pool |
| KR20110083952A (en) * | 2010-01-15 | 2011-07-21 | 한국전력기술 주식회사 | Pipe vibration estimation method |
| CN202033164U (en) * | 2011-01-12 | 2011-11-09 | 中国海洋石油总公司 | Testing device capable of simulating uniform-flow vortex-induced vibration of submarine pipeline |
| CN104502043A (en) * | 2014-12-02 | 2015-04-08 | 上海交通大学 | Elongated stand pipe power response measurement device through simulating seabed pipe soil and horizontal forced oscillation |
| CN104727487A (en) * | 2015-03-23 | 2015-06-24 | 天津大学 | Composite CFRP (Carbon Fibre Reinforced Polymer) tendon anchoring system |
-
2015
- 2015-09-18 CN CN201510601049.7A patent/CN105203281B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2221033A (en) * | 1988-06-16 | 1990-01-24 | British Petroleum Co Plc | Method for measuring the natural vibrational frequency of a submarine pipeline free span |
| CN101089578A (en) * | 2007-07-12 | 2007-12-19 | 上海交通大学 | Vortex vibration testing device for flexible pipe mould vertical in towing pool |
| KR20110083952A (en) * | 2010-01-15 | 2011-07-21 | 한국전력기술 주식회사 | Pipe vibration estimation method |
| CN202033164U (en) * | 2011-01-12 | 2011-11-09 | 中国海洋石油总公司 | Testing device capable of simulating uniform-flow vortex-induced vibration of submarine pipeline |
| CN104502043A (en) * | 2014-12-02 | 2015-04-08 | 上海交通大学 | Elongated stand pipe power response measurement device through simulating seabed pipe soil and horizontal forced oscillation |
| CN104727487A (en) * | 2015-03-23 | 2015-06-24 | 天津大学 | Composite CFRP (Carbon Fibre Reinforced Polymer) tendon anchoring system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269749A (en) * | 2018-11-12 | 2019-01-25 | 广西科技大学 | A kind of experimental tank of suspended span pipeline vortex-induced vibration test |
| CN109269749B (en) * | 2018-11-12 | 2023-10-27 | 广西科技大学 | Test water tank for vortex-induced vibration test of suspended span pipeline |
| CN112084560A (en) * | 2020-09-09 | 2020-12-15 | 长沙理工大学 | Vortex-induced vibration numerical simulation calculation method for multi-width bridge deck bridge |
| CN112084560B (en) * | 2020-09-09 | 2023-03-24 | 长沙理工大学 | Vortex-induced vibration numerical simulation calculation method for multi-width bridge deck bridge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105203281B (en) | 2018-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105222969B (en) | Inclination angle ladder incoming marine riser vortex swashs ginseng and swashs coupled vibrations experimental rig | |
| CN105181281B (en) | The single standpipe vortex vibration testing device of inclination angle uniform incoming flow condition deep-sea tension type | |
| CN202033164U (en) | Testing device capable of simulating uniform-flow vortex-induced vibration of submarine pipeline | |
| CN102147321A (en) | Uniform flow vortex-induced vibration simulation tester for seabed pipeline | |
| CN105241623B (en) | Local velocity increases inclination angle ladder incoming vortex-induced vibration of marine riser experimental rig | |
| CN105203297B (en) | The vortex vibration testing device of marine riser beam space arrangement can be changed | |
| CN110031166A (en) | Uniform flow and platform move lower marine riser well head system bridge response to forced vibration device | |
| CN104990686A (en) | Testing apparatus of multi-span submarine pipeline vortex-induced vibration on vertical uniform incoming flow condition | |
| CN105203282B (en) | Local velocity increases inclination angle cascade flow marine riser beam vortex vibration testing device | |
| CN105203281A (en) | Testing device for local flow rate increasing dip-angle incoming flow multi-span seabed pipeline vortex-induced vibration | |
| CN105300636B (en) | Local velocity increases inclination angle incoming marine riser beam vortex vibration testing device | |
| CN103105281A (en) | Test device used for researching marine riser interference laws under top tension ratio effect | |
| CN105203298A (en) | Inclination angle local flow speed increase incoming flow ocean riser vortex-induced vibration testing device | |
| CN105157939A (en) | Inclination angle uniform inflow condition multi-span seabed pipeline vortex induced vibration test device | |
| CN105203280A (en) | Testing device for local flow rate increasing vertical incoming flow multi-span seabed pipeline vortex-induced vibration | |
| CN205175639U (en) | Single riser vortex -induced vibration testing device of even incoming flow condition deep sea tensioning formula in inclination | |
| CN205175637U (en) | Even incoming flow condition multispan submarine pipeline vortex -induced vibration testing device in inclination | |
| CN105157940B (en) | The single standpipe vortex vibration testing device of inclination angle ladder inlet flow conditions deep-sea tension type | |
| CN205655977U (en) | Free displacement interference effect test device of riser crowd | |
| CN105067210B (en) | The stepped inlet flow conditions deep-sea tensioned risers beam vortex vibration testing device in inclination angle | |
| CN105300635B (en) | Vertical riser incoming marine riser vortex swashs ginseng and swashs coupled vibrations experimental rig | |
| CN105203283B (en) | Variable vortex vibration testing device is arranged in local velocity increase vertical tube space | |
| CN203011669U (en) | A testing device used for researching an interference rule between marine stand pipes under a top tension effect | |
| CN105973553B (en) | A kind of experimental system of the soil body-seabed multispan pipeline-ocean current multi- scenarios method effect | |
| CN210893114U (en) | Seabed base observation device compatible with tide, tide level and wave observation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Lu Yan Inventor after: Zhou Lidan Inventor after: Cui Mei Inventor after: Luan Yingsen Inventor before: Xu Wanhai Inventor before: Lu Yan Inventor before: Cui Mei Inventor before: Luan Yingsen |
|
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 300350 District, Jinnan District, Tianjin Haihe Education Park, 135 beautiful road, Beiyang campus of Tianjin University Applicant after: Tianjin University Address before: 300072 Tianjin City, Nankai District Wei Jin Road No. 92 Applicant before: Tianjin University |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |