CN105203281B - Local velocity increases inclination angle incoming multispan submarine pipeline vortex-induced vibration experimental rig - Google Patents
Local velocity increases inclination angle incoming multispan submarine pipeline vortex-induced vibration experimental rig Download PDFInfo
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- CN105203281B CN105203281B CN201510601049.7A CN201510601049A CN105203281B CN 105203281 B CN105203281 B CN 105203281B CN 201510601049 A CN201510601049 A CN 201510601049A CN 105203281 B CN105203281 B CN 105203281B
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Abstract
The invention discloses a kind of local velocity to increase inclination angle incoming multispan submarine pipeline vortex-induced vibration experimental rig, including submarine pipeline model, transverse test support, flow velocity aggrandizement apparatus, multispan support meanss are provided between the middle part of submarine pipeline model and transverse test support, multispan support meanss include fixed and rotatable supporting pillar and multiple pipeline models support clamp；Flow velocity aggrandizement apparatus is set with submarine pipeline model, flow velocity aggrandizement apparatus includes flow velocity increase cover and rotatably supports device, flow velocity increase cover includes speedup section and the steady flow segment sequentially arranged by water (flow) direction, speedup section flare, the opening of steady flow segment is consistent with tubaeform osculum, rotatable to support device to be connected between transverse test support and flow velocity increase cover.The present invention can simulate the boundary condition of inclination angle inlet flow conditions and free spanning submarine pipeline span centre, carry out experimental study to multispan pipeline, probe into its vortex-induced vibration genesis mechanism, necessary reference and reference are provided for engineering is actual.
Description
Technical field
The present invention relates to a kind of experimental rig of field of ocean engineering, specifically, refers to a kind of office
Portion's flow velocity increase inclination angle incoming multispan submarine pipeline vortex-induced vibration experimental rig.
Background technology
Increasingly deficient with landing field petroleum resources, the exploitation of Marine oil and gas resource has obtained fast development, submerged pipeline
Quantity increases year by year.Because sea-floor relief is complicated, bad environments, submarine pipeline inevitably forms suspended span section, or even more
Span.When seawater flows through suspended span pipeline, pipeline trailing edge will produce alternate vortex shedding, when vortex shedding frequency and pipeline self-vibration
When frequency is close, the vibration of pipeline will force vortex shedding frequency to be fixed near the pipeline natural frequency of vibration, so as to occur " to lock "
Phenomenon.The vortex-induced vibration of pipeline and " locking " phenomenon are to cause the principal element of pipeline gas engineering and fatigue rupture.Especially need to note
Meaning, the ocean current that submarine pipeline is subjected to washes away carries inclination angle sometimes, i.e. direction of flow and submarine pipeline out of plumb, research is inclined
Angle uniform incoming flow condition multispan submarine pipeline vortex-induced vibration has important theory and realistic meaning.
At present, the most reliable and maximally effective hand of inclination angle uniform incoming flow condition multispan submarine pipeline vortex-induced vibration phenomenon is studied
Section is model test., can be than more comprehensively observing vortex-induced vibration phenomenon and principal character and inclination angle by model test
Influence of the incoming to vortex-induced vibration, obtain more reliable result of the test.Result of the test can be used to effect theory and numerical model
Precision.Can preferably be probed into by way of experimental test inclination angle uniform incoming flow condition multispan submarine pipeline vortex-induced vibration and
The mechanism of suppression, accumulated experience for engineering is actual.The suppression of submarine pipeline vortex-induced vibration is for the work in the exploitation of offshore oil
Cheng Anquan is significant.
Found by the investigation to prior art literature, the research of multispan pipeline vortex-induced vibration at this stage is carried out and do not filled very much also
Point, the research in terms of experiment lags far behind the actual demand of engineering.The MARINTEK research institutions of Norway were at 2000 to 2003
Carry out the vortex-induced vibration experiment of part multispan pipeline, and further perfect specification DNV-RP-F105 (2006) during year,
Article " VIV response of long in the 21 boundary ocean offshores held for 2002 and polar region engineering international conference
Freespanning pipelines " (long free suspended span pipeline vortex-induced vibration response investigations) describe test details in detail, adopt
With the supporting role of Hookean spring simulation multistage suspended span, the disturbance to Inlet-air Velocity Distribution is added.
But Practical Project is in practice, submarine pipeline axially not fully overlaps with incoming vertical direction, a constant inclination be present
Rake angle.The presence at inclination angle causes multispan submarine pipeline vortex-induced vibration to become sufficiently complex, still lacks the research work of correlation so far
Make.Meanwhile the flow velocity section in hanging section axially along the pipe is not unalterable, the feelings of local velocity increase be present
Condition.Therefore, design it is a set of can the increase of test simulation local velocity, inclination angle incoming, and can realize the survey of multispan pipeline vortex-induced vibration
The experimental rig of amount is imperative.
The content of the invention
Present invention deficiency existing for the inclination angle inlet flow conditions multispan pipeline experimental study with flow velocity aggrandizement apparatus, there is provided
The multispan pipeline experimental rig of flow velocity can locally be increased, inclination angle inlet flow conditions and free spanning submarine pipeline span centre can be simulated
Boundary condition, experimental study is carried out to multispan pipeline, probes into its vortex-induced vibration genesis mechanism, necessary ginseng is provided for engineering is actual
Examine and use for reference.
In order to solve the above-mentioned technical problem, a kind of local velocity increase inclination angle incoming multispan submarine pipeline vortex exciting of the present invention
Dynamic test device, including submarine pipeline model, transverse test support, flow velocity aggrandizement apparatus, trailer, strain acquirement instrument and calculating
Machine, the submarine pipeline model pass through the big hole of flow velocity aggrandizement apparatus side, and its one end is provided with first end support meanss, institute
The other end for stating submarine pipeline model is provided with the second end support meanss, and the middle part of the submarine pipeline model supports provided with multispan
Device, the tops of the first end support meanss and the second end support meanss respectively with the transverse test support two
End connection, the top of the multispan support meanss is connected with the middle part of the transverse test support；The transverse test is supported
Frame is fixed on the bottom of the trailer；The submarine pipeline model includes some wires and a thin-wall copper pipe, the wire
External diameter is 0.3mm, and the wire is 7 core wires, and the external diameter of the thin-wall copper pipe is 8mm, wall thickness 1mm；From the thin wall type copper
If the outer surface of pipe is successively to being externally provided with the dried layer heat-shrink tube being closely contacted with each other and one layer of silicone tube, the thin-wall copper pipe and institute
State the resistance strain gage strained between heat-shrink tube provided with multi-disc for collection, the resistance strain gage；By binding post with leading
One end of line is connected, and the other end of wire extends one end of submarine pipeline model；One end of the submarine pipeline model passes through
Pin is connected with the first column joint, and the other end of the submarine pipeline model is connected with the second column joint by pin；Institute
Stating transverse test support includes subject beam, and two side roof parts of the subject beam are respectively provided with angle scale；The main body
The top of crossbeam is provided with channel-section steel, and the trailer support is on channel-section steel；The first end support meanss include the of vertical direction
One support tube, horizontally disposed first angle plate, the bottom of first support tube are connected with the top of first support tube
The first supporting plate is connected with, first parallel with first supporting plate is bolted on the inside of first supporting plate
Deflector, the bottom of first deflector is provided with a through hole, a universal coupling is provided with the through hole, described universal
One end of shaft coupling is fixed in the first supporting plate by universal coupling screw, the other end of the universal coupling with it is described
The first column joint connection on submarine pipeline model；The second end support meanss include the second support of vertical direction
Manage, be connected with horizontally disposed second angle plate at the top of second support tube, the bottom of second support tube is connected with
Second supporting plate, second water conservancy diversion parallel with second supporting plate is bolted on the inside of second supporting plate
Plate, the bottom of second deflector are provided with a rectangle gap, angle clamp, the angle are provided with the rectangle gap
Degree clamp is provided with a Pipe installing hole；Include four angle clamps in the experimental rig, the pipe on each angle clamp
The axis of road mounting hole and the angle of angle clamp thickness direction are respectively 0 degree, 15 degree, 30 degree, 45 degree；Second supporting plate
Outside be provided with a pulley, pulley base cushion block, the pulley base are provided between the pulley base of the pulley and the second supporting plate
Cushion block is wedge, and a steel wire rope via is respectively arranged below with positioned at pulley base in second supporting plate；The experimental rig
In include three pulley base cushion blocks, the angle difference between the inclined-plane and the second supporting plate contact surface on each pulley base cushion block
For 15 degree, 30 degree, 45 degree；One is connected with the subject beam, positioned at the connection end side with the second end support meanss
Pulling force sensor, the other end of the pulling force sensor are connected with pulling force stretcher and tension spring in turn；From submarine pipeline mould
The second column joint in type, through connecting around the other end of pulley to tension spring after the steel wire rope via in the second supporting plate
It is connected to steel wire rope；The axis of the steel wire rope and the submarine pipeline mould is in the same plane；The top of the multispan support meanss
Portion is connected with the middle part of the transverse test support；The multispan support meanss include fixed supporting pillar, rotatable supporting pillar
Clamp is supported with multiple pipeline models；Flow velocity aggrandizement apparatus, the flow velocity aggrandizement apparatus are set with the submarine pipeline model
Covered including flow velocity increase and rotatable support device, the rotatable support device include fixed supporting pillar and rotatable support
Post；The top and middle part of the fixed supporting pillar are respectively equipped with connecting plate, and the bottom of the fixed supporting pillar is fixed with fixed plate,
The fixed plate and the fixed perpendicular arrangement of supporting pillar, the fixed plate are provided with two first through hole；It is described rotatable
Angled fixed plate is fixed at the top of supporting pillar, and the on both sides of the middle of the rotatable supporting pillar, which is welded with, reinforces rope connection spiral shell
It is female；The angle fixed plate is provided with two as one group of four group of second through hole, the second through hole and institute in the angle fixed plate
Stating the position relationship of first through hole in fixed plate is：Every group of second through hole is identical with the centre-to-centre spacing of two first through hole, four group
The line of centres junction of two through holes overlaps with point A, the point A with the midpoint of the line of centres of every group of second through hole, four group second
The line of centres of through hole is designated as line of centres L1, line of centres L2, line of centres L3 and line of centres L4, the center and connected respectively
Line L1 overlaps with the floor projection of the line of centres of two first through hole, line of centres L2, line of centres L3 and line of centres L4
It is successively 15 degree, 30 degree and 45 degree with line of centres L1 angle；Between the fixed supporting pillar and the rotatable support column
Pass through what is set in the through hole of one of which second in two first through hole and the angle fixed plate in the fixed plate
Fixed plate connecting bolt connects；The bottom of rotatable supporting pillar in the multispan support meanss and a pipeline model clamp
(connection；Each pipeline model clamp includes the plate body being made up of two half docked, and the joint of the plate body is provided with support
Hole, the upper end of two half are fixed by screw and the rotatable supporting pillar, and the lower end of two half is blocked by screw and one
Plate fixed plate is fixed；On four pipeline model clamps the axis of supported hole and the angle of plate body thickness direction be respectively 0 degree, 15
Spend, 30 degree and 45 degree；Reinforcing rope attaching nut and the transverse direction positioned at the on both sides of the middle welding of the rotatable supporting pillar
Oblique pull steel wire rope is respectively equipped between experiment support, pulling force stretcher is connected with the oblique pull steel wire rope；The flow velocity increases
Big cover includes the speedup section sequentially arranged by water (flow) direction and steady flow segment, the speedup section flare, the speedup section are entered
Water end (W.E.) is tubaeform big opening end, and the water side of the speedup section is tubaeform osculum end, the openings of sizes of the steady flow segment
It is in the same size with tubaeform osculum end；The water inlet end of the speedup section and the area ratio of water side are the flow velocity aggrandizement apparatus institute
The flow velocity multiple to be increased；The steady flow segment, which is provided with, is used for the through hole that the submarine pipeline model passes through；The rotatable support
The top of device is fixed on transverse test support, the rotatable bottom for supporting device and flow velocity increase cover weldering
Connect.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention solves the design problem and multispan branch of flow velocity aggrandizement apparatus in the experiment of multispan submarine pipeline vortex-induced vibration
The application problem of support, inclination angle inlet flow conditions, augmenting portion pipe flow speed can be simulated, while more accord with the actual work of ocean engineering
Condition.Supporting pillar in the present invention is aerofoil profile, reduces the interference of multispan support meanss stream field to greatest extent.Supporting pillar both ends
Fixed by steel wire rope and pulling force stretcher, enhance the stability of multispan support.Apparatus of the present invention design is simple exquisite, processing
It is easy to operate, it is cheap, increase flow velocity.It is multispan Submarine Pipeline under inclination angle inlet flow conditions of the research with flow velocity aggrandizement apparatus
The important rig for testing of road vortex-induced vibration, is with a wide range of applications.
Brief description of the drawings
Fig. 1 is the inclination angle inlet flow conditions multispan submarine pipeline vortex-induced vibration experimental rig with flow velocity aggrandizement apparatus in the present invention
Structural representation；
Fig. 2-1 is naked pipe formula submarine pipeline model and two end connector schematic diagrames in the present invention；
Fig. 2-2 is the submarine pipeline model and two end connector schematic diagrames that spiral tubulation is carried in the present invention；
Fig. 3 is the top view of transverse test support shown in Fig. 1；
Fig. 4 is the right view of transverse test support shown in Fig. 3；
Fig. 5 is first, second end support meanss shown in Fig. 1 and submarine pipeline model coupling part schematic diagram；
Fig. 6 is the structural representation of supporting plate shown in Fig. 1；
Fig. 7 is the structural representation of deflector shown in Fig. 1；
Fig. 8 is the top view of transverse test support and trailer mutual alignment one；
Fig. 9 is the right view of transverse test support shown in Fig. 8 and trailer mutual alignment one；
Figure 10-1 transverse tests support and the top view of trailer mutual alignment two；
Figure 10-2 is the top view of transverse test support and trailer mutual alignment three；
Figure 10-3 is the top view 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 under state shown in Figure 10-1；
Figure 12-2 is inclination angle schematic diagram between pipeline and incoming under state shown in Figure 10-2；
Figure 12-3 is inclination angle schematic diagram between pipeline and incoming under state shown in Figure 10-3；
Figure 13-1 is the front view of pulley base cushion block；
Figure 13-2 is the left view of pulley base cushion block shown in Figure 13-1；
Figure 13-3 is the top view of pulley base cushion block shown in Figure 13-1；
Figure 14 is that the rotatable support device of multispan in the present invention (removes pipeline model support clamp 53 and clamp fixed plate
59 be the rotatable support device of flow velocity aggrandizement apparatus) schematic diagram；
Figure 15 is that the rotatable support device of multispan shown in Figure 14 (removes pipeline model support clamp 53 and clamp fixed plate
59 be flow velocity aggrandizement apparatus rotatable support device) side view；
Figure 16 is that the rotatable support device of multispan shown in Figure 14 (removes pipeline model support clamp 53 and clamp fixed plate
59 be flow velocity aggrandizement apparatus rotatable support device) top view；
Figure 17-1 is the upward view after angle fixed plate 56 and the connection of rotatable supporting pillar 52；
Figure 17-2 is the amplification inclinating view after angle fixed plate shown in Figure 17-1 56 and the connection of rotatable supporting pillar 52；
Figure 18-1 is that inclination angle incoming is 0 degree of bottom plate and the connection diagram of angle fixed plate 56；
Figure 18-2 is that inclination angle incoming is 15 degree of bottom plates and the connection diagram of angle fixed plate 56；
Figure 18-3 is that inclination angle incoming is 30 degree of bottom plates and the connection diagram of angle fixed plate 56；
Figure 18-4 is that inclination angle incoming is 45 degree of bottom plates and the connection diagram of angle fixed plate 56；
Figure 19 is rotatable supporting pillar 52, angle clamp 45, the decomposition texture enlarged drawing of clamp fixed plate 59 in Figure 14；
Figure 20 is rotatable supporting pillar 52, angle clamp 45, the left view enlarged drawing of clamp fixed plate 59 in Figure 14；
Figure 21-1 is schematic diagram of angle clamp described in Figure 20 for 45 degree of clamps；
Figure 21-2 is schematic diagram of angle clamp described in Figure 20 for 30 degree of clamps；
Figure 21-3 is schematic diagram of angle clamp described in Figure 20 for 15 degree of clamps；
Figure 22-1 is that the right side after 45 degree of clamps are connected with rotatable supporting pillar 52 and clamp fixed plate 59 shown in Figure 21-1 regards
Figure；
Figure 22-2 is that the right side after 30 degree of clamps are connected with rotatable supporting pillar 52 and clamp fixed plate 59 shown in Figure 21-2 regards
Figure；
Figure 22-3 is that the right side after 15 degree of clamps are connected with rotatable supporting pillar 52 and clamp fixed plate 59 shown in Figure 21-3 regards
Figure；
Figure 23 is the submarine pipeline model hierarchy schematic diagram with spiral strake；
Figure 24-1 is the front view of flow velocity increase cover in Fig. 1；
Figure 24-2 is the side view of flow velocity increase cover in Fig. 1；
Figure 24-3 is the top view of flow velocity increase cover in Fig. 1；
Figure 25 is the rotatable connection diagram for supporting device and flow velocity increase cover；
Figure 26-1 is the rotatable support schematic device of flow velocity aggrandizement apparatus；
Figure 26-2 is the side view of the rotatable support device of flow velocity aggrandizement apparatus shown in Figure 26-1.
In figure：
1- submarine pipeline model 2- transverse test support 3- first end support meanss
4- the second end support meanss 5- multispan support meanss 6- pins
7- the first column joint 8- the second column joint 9- pulleys
10 pulley base cushion block 11- pulling force sensor 12- pulling force stretchers
13- tension spring 14- steel wire rope 15- oblique pull steel wire ropes
17- down tube 18- deflector fixed screw 21- angle scales
28- flow velocity aggrandizement apparatus 29- rotatably supports device 30- flow velocitys increase cover
31- the second deflector 32- first angle plate 303- big holes
Above and below 304- side walls 305- or so side wall 306- speedup sections
307- steady flow segments 41- the second support tube 42- second angle plates
43- the second supporting plate 44- the second deflector 45- angle clamps
51- fixes the rotatable supporting pillar 53- pipeline models support clamps of supporting pillar 52-
54- connecting plate 55- fixed plate 56- angle fixed plates
57- reinforces rope attaching nut's 58- fixed plate connecting bolt 59- clamp fixed plates
101- thin-wall copper pipe 102- heat-shrink tube 103- silicone tubes
104- resistance strain gage 105- silicone bands
Embodiment
Technical solution of the present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, described is specific
Only the present invention is explained for embodiment, is not intended to limit the invention.
As shown in figure 1, a kind of local velocity increase inclination angle incoming multispan submarine pipeline vortex-induced vibration experimental rig, including sea
Bottom pipeline model 1, transverse test support 2, flow velocity aggrandizement apparatus 28, trailer, strain acquirement instrument and computer, the Submarine Pipeline
The one end of road model 1 is provided with first end support meanss 3, and the other end of the submarine pipeline model 1 is provided with the second end support dress
4 are put, the middle part of the submarine pipeline model 1 is provided with multispan support meanss 5, the first end support meanss 3 and the second end
Both ends of the top of support meanss 4 respectively with the transverse test support 2 are connected, the top of the multispan support meanss 5 with
The middle part of the transverse test support 2 connects the bottom that the transverse test support 2 is fixed on the trailer.
As shown in Fig. 2-1, Fig. 2-2 and Figure 16, the submarine pipeline model 1 can be naked pipe structure or carry
Spiral strake structure, if naked pipe structure, then the submarine pipeline model 1 includes some wires and a thin-wall copper pipe 101, institute
The external diameter for stating wire is 0.3mm, and the wire is 7 core wires, and the external diameter of the thin-wall copper pipe 101 is 8mm, wall thickness 1mm；Such as
Shown in Figure 23, if from the outer surface of the thin-wall copper pipe 101 successively to being externally provided with the He of dried layer heat-shrink tube 102 that is closely contacted with each other
One layer of silicone tube 103, multi-disc is provided between the thin-wall copper pipe 101 and the heat-shrink tube 102 should for gathering the resistance of strain
Become piece 104, the resistance strain gage 104 is connected by binding post with one end of wire, and the other end of wire extends seabed
One end of pipeline model 1；One end of the submarine pipeline model 1 is connected with the first column joint 7, the seabed by pin 6
The other end of pipeline model 1 is connected with the second column joint 8 by pin 6.If with spiral strake structure, then above-mentioned
The outer surface of silicone tube 103 be provided with the silicone band 105 of a plurality of helically wire, the cross section of the silicone band 105 and experiment
The shape in the cross section of spiral pipeline strake is identical.
As shown in Figure 3 and Figure 4, the transverse test support 2 includes subject beam, two side roof parts of the subject beam
Angle scale 21 is respectively provided with, the top of the subject beam is provided with channel-section steel, and the trailer support is on channel-section steel；Transverse test branch
The subject beam for holding frame 2 is rectangular cross-sectional steel pipe and square-section steel pipe.The both ends connection of transverse test support 2 is variable
First, second end support meanss of angle simultaneously respectively install an angle scale 21 and the first, second end support of variable-angle
Angle board 32 (or 42) fitting at the top of device.Thin-walled wooden case is installed in the inside of transverse test support 2, is put inside thin-walled wooden case
It is equipped with cuboid keg float.
Such as the schematic diagram that Figure 11 is angle scale, angle board.In order that first, second deflector 31 and 41 all the time with incoming side
To parallel, it is necessary to adjust the position of angle board and angle scale.When incoming vertical direction and the axial inclination of pipeline are 0 degree, angle
Degree plate and angle scale should be overlapped just；When incoming vertical direction and the axial inclination of pipeline are 15 degree, angle board and angle scale 4
Between angle should be 15 degree；When incoming vertical direction and the axial inclination of pipeline are 30 degree, between angle board and angle scale
Angle should be 30 degree；When incoming vertical direction and the axial inclination of pipeline are 45 degree, the angle between angle board and angle scale
Degree should be 45 degree.
As shown in figure 5, the first end support meanss 3 include the first support tube 31 of vertical direction, described first
The top of stay tube 31 is connected with horizontally disposed first angle plate 32, and the bottom of first support tube 31 is connected with the first support
Plate 33, the inner side of first supporting plate 33 are bolted first deflector parallel with first supporting plate 33
34, the bottom of first deflector 34 is provided with a through hole, and a universal coupling 35 is provided with the through hole, described universal
One end of shaft coupling 35 is fixed in the first supporting plate 33 by universal coupling screw 36, the universal coupling 35 it is another
End is connected with the first column joint 7 on the submarine pipeline model 1；The second end support meanss 4 include vertical direction
The second support tube 41, the top of second support tube 41 is connected with horizontally disposed second angle plate 42, described second
The bottom of stay tube 41 is connected with the second supporting plate 43, and the inner side of second supporting plate 43 has been bolted and described second
The second parallel deflector 44 of supporting plate 43, as shown in fig. 7, the bottom of second deflector 44 is slitted provided with a rectangle
Mouthful, angle clamp 45 is provided with the rectangle gap, the angle clamp 45 is provided with a Pipe installing hole；The experiment fills
Include four angle clamps 45 in putting, axis and the thickness side of angle clamp 24 in the Pipe installing hole on each angle clamp 45
To angle be respectively 0 degree, 15 degree, 30 degree, 45 degree；The outside of second supporting plate 43 is provided with a pulley 9, in order that sliding
The pulley groove of wheel 9 installs the cunning that can change angle on the extended line of submarine pipeline model 1, it is necessary in the second supporting plate 43
Cushion block 23 is taken turns, then pulley 9 is installed again.Pulley seat cushion is provided between the pulley base of the pulley 9 and the second supporting plate 43
Block, the pulley base cushion block are wedge, and pulley base is located in second supporting plate 43 is respectively arranged below with a steel wire rope
Via；Include three pulley base cushion blocks in the experimental rig, inclined-plane and the second supporting plate 43 on each pulley base cushion block 10
Angle between contact surface is respectively 15 degree, 30 degree, 45 degree, when incoming vertical direction and the axial inclination of pipeline are 15 degree,
The varied angle pulley cushion block at 15 degree of angles is installed；When incoming vertical direction and the axial inclination of pipeline are 30 degree, 30 degree of angles are installed
Varied angle pulley cushion block；When incoming vertical direction and the axial inclination of pipeline are 45 degree, 45 varied angle pulley pad is installed
Block.As shown in Figure 13-1, Figure 13-2 and Figure 13-3.
As shown in figure 1, between on the inner side of first support tube 31 and subject beam and second support tube 41
Down tube 17 is respectively connected between on inner side and subject beam.As shown in Figure 5 and Figure 6, first deflector 34 and
Two deflectors 44 are plastic plate, and the He of hog frame 36 is respectively equipped with first deflector 34 and second deflector 44
46。
As shown in figure 1, it is connected with one on the subject beam, positioned at the connection end side with the second end support meanss 4
Individual pulling force sensor 11, the other end of the pulling force sensor 11 are connected with pulling force stretcher 12 and tension spring 13 in turn；From
The second column joint 8 on submarine pipeline model 1, through after the steel wire rope via in the second supporting plate 43 around pulley 9 to drawing
The other end of power spring 13 is connected with steel wire rope 14；The axis of the steel wire rope 17 and the submarine pipeline model 1 is same flat
In face.
Described variable-angle multispan support meanss are by fixing supporting pillar 51, fixed plate 55, rotatable supporting pillar 52, connection
Plate 54, angle fixed plate 56, fixed plate connecting screw 58, reinforcing rope attaching nut 57, pipeline model support clamp 53, clamp
Fixed plate 59, pulling force stretcher 16 etc. are formed.As shown in Figure 14, Figure 15 and Figure 16, the multispan support meanss 5 include fixed branch
Hold post 51, rotatable supporting pillar 52 and multiple pipeline models support clamp 53；Fixed supporting pillar 51 and rotatable supporting pillar 52
Cross section is aerofoil profile, as shown in figures 14 and 17.The top and middle part of the fixed supporting pillar 51 are respectively equipped with connecting plate 54, described
The bottom of fixed supporting pillar 51 is fixed with fixed plate 55, the fixed plate 55 and the fixed 51 perpendicular arrangement of supporting pillar, institute
State fixed plate 55 and be provided with two first through hole；Angled fixed plate 56 is fixed at the top of the rotatable supporting pillar 52, described
The on both sides of the middle of rotatable supporting pillar 52, which is welded with, reinforces rope attaching nut 57, the bottom and one of the rotatable supporting pillar 52
Individual pipeline model clamp 53 connects.
As illustrated in figures 19 and 20, rotatable supporting pillar 52 is connected with clamp 53 with primary screw, and the bottom of clamp 53 passes through
Primary screw clamp fixed plate 59 is fixed.Clamp 53 is made up of two half, and circular hole is opened at middle part, submarine pipeline model can be penetrated into circle
Hole, clamp 34 is fixed on rotatable supporting pillar 52, bottom clamp fixed plate 59 is reinforced.But when incoming and submarine pipeline mould
The clamp 53 of different angle need to be used during type out of plumb.As shown in Figure 21-3 and Figure 22-3, when incoming vertical direction and pipeline
When axial inclination is 15 degree, the clamp of 15 degree of installation；As shown in Figure 21-2 and Figure 22-2, when incoming vertical direction and the axle of pipeline
When to inclination angle being 30 degree, 30 degree of clamp of installation；As shown in Figure 21-1 and Figure 22-1, when incoming vertical direction and the axial direction of pipeline
When inclination angle is 45 degree, the clamp of 45 degree of installation.As shown in Figure 14 and Figure 16, the rotatable both sides of supporting pillar 52 are welded with two reinforcings
Rope attaching nut 57, reinforcing rope can be with reinforcement by connection rope attaching nut 57 and pulling force stretcher 24, and is fixed on transverse direction
Test on support 3.The perpendicularity that multispan supports is adjusted by adjusting the size of pulling force stretcher, and makes bracing reinforcement.
As shown in Figure 17-1, the submarine pipeline model that angle fixed plate 56 opens multiple Kong Kewei and has inclination angle incoming provides branch
Support, i.e., described angle fixed plate 56 are provided with four group of second through hole that two are one group, and second is logical in the angle fixed plate 56
Hole and the position relationship of first through hole in the fixed plate 55 are：As shown in Figure 17-2, every group of second through hole and two first are logical
The centre-to-centre spacing in hole is identical, and the line of centres junction of four group of second through hole and point A, the point A and every group of second through hole center connect
The midpoint of line overlaps, the line of centres of four group of second through hole be designated as respectively line of centres L1, line of centres L2, line of centres L3 and
Line of centres L4, the line of centres L1 overlap with the floor projection of the line of centres of two first through hole, line of centres L2, in
Heart line L3 and line of centres L4 is successively 15 degree, 30 degree and 45 degree with line of centres L1 angle.The fixed supporting pillar 51
Pass through two first through hole in the fixed plate 55 and the angle fixed plate 56 between the rotatable supporting pillar 52
On the through hole of one of which second in the fixed plate connecting bolt 58 that sets connect；Figure 18-1 is that inclination angle incoming is 0 degree of lower fixation
Plate and the connection diagram of angle fixed plate 56；When incoming vertical direction and the axial inclination of pipeline are 15 degree, angle is fixed
Plate 56 rotates 15 degree and then is connected with fixed plate screw 58, as shown in Figure 18-2；When the axial direction of incoming vertical direction and pipeline is inclined
When angle is 30 degree, angle fixed plate 56 is rotated 30 degree and then is connected with fixed plate screw 58, as shown in Figure 18-3；When incoming is hung down
Nogata to be 45 degree with the axial inclination of pipeline when, angle fixed plate 56 is rotated 45 degree and then is connected with fixed plate screw 58,
As shown in Figure 18-4.
Each pipeline model clamp 53 includes the plate body being made up of two half docked, and the joint of the plate body is provided with
Supported hole, the upper end of two half are fixed by screw and the rotatable supporting pillar 52, and the lower end of two half passes through screw
Fixed with a clamp fixed plate 59；The angle of the axis of supported hole and plate body thickness direction is distinguished on four pipeline model clamps 53
For 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.
It can realize that there is different fixed angles, transverse test branch between transverse test support and trailer by adjustment
The middle part for holding frame 2 is bolted in the bottom of trailer 20.Carry out flow inclination to change, by transverse test support 2 with dragging
Car 20 is fixed in the installation of corresponding angle.When incoming vertical direction and the axial inclination of pipeline are 0 degree, transverse test support
2 it is vertical with trailer 20 fix, as shown in Figure 8 and Figure 9.When incoming vertical direction and the axial inclination of pipeline are 15 degree, laterally
Experiment support 2 is fixed with trailer 20 in 15 degree of angles, such as Figure 10-1；When incoming vertical direction and the axial inclination of pipeline are 30 degree
When, transverse test support 2 is fixed with trailer 20 in 30 degree of angles, such as Figure 10-2；When the axial direction of incoming vertical direction and pipeline is inclined
When angle is 45 degree, transverse test support 2 is fixed with trailer 20 in 45 degree of angles, such as Figure 10-3.Such as Figure 12-1, Figure 12-2 and figure
12-3 inclination angle schematic diagrames between pipeline and incoming, wherein, Figure 12-1 represents that the axial inclination of incoming vertical direction and pipeline is
15 degree, Figure 12-2 represents that the axial inclination of incoming vertical direction and pipeline is 30 degree, and Figure 12-3 represents incoming vertical direction and pipe
The axial inclination in road is 45 degree.
As shown in Fig. 1, Figure 14 and Figure 15, the reinforcing rope positioned at the on both sides of the middle welding of the rotatable supporting pillar 52 connects
Oblique pull steel wire rope 15 is respectively equipped between connected nut 57 and the transverse test support 2, is connected on the oblique pull steel wire rope 15
There is pulling force stretcher 16, reinforce rotatable supporting pillar 52.
The rotatable support device is by fixing supporting pillar 51, fixed plate 55, rotatable supporting pillar 52, connecting plate 54, angle
Spend fixed plate 56, fixed plate connecting screw 58, reinforce the composition such as rope attaching nut 57, pulling force stretcher 12.Such as Figure 14, Figure 15
Shown in Figure 16, the rotatable support device 29 includes fixed supporting pillar 51, rotatable supporting pillar 52；The fixed He of supporting pillar 51
The cross section of rotatable supporting pillar 52 is aerofoil profile, as shown in FIG. 16 and 17.The top of the fixed supporting pillar 51 and middle part difference
Provided with connecting plate 54, the bottom of the fixed supporting pillar 51 is fixed with fixed plate 55, the fixed plate 55 and the fixed support
51 perpendicular arrangement of post, the fixed plate 55 are provided with two first through hole；The top of the rotatable supporting pillar 52 is fixed with
Angle fixed plate 56, the on both sides of the middle of the rotatable supporting pillar 52, which is welded with, reinforces rope attaching nut 57, described rotatable
The bottom of supporting pillar 52 is connected with flow velocity increase cover 30, as shown in figure 25.The rotatable both sides of supporting pillar 52 weldering as shown in figure 14
Be connected to two and reinforce rope attaching nuts 57, reinforce rope can with reinforcement by connection rope attaching nut 57 and pulling force stretcher 12,
And it is fixed on transverse test support 3.The vertical of rotatable support device is adjusted by adjusting the size of pulling force stretcher
Degree, and make bracing reinforcement.
As shown in Figure 17-1, the flow velocity aggrandizement apparatus that angle fixed plate 56 opens multiple Kong Kewei and has inclination angle incoming provides branch
Support, i.e., described angle fixed plate 56 are provided with four group of second through hole that two are one group, and second is logical in the angle fixed plate 56
Hole and the position relationship of first through hole in the fixed plate 55 are：As shown in Figure 17-2, every group of second through hole and two first are logical
The centre-to-centre spacing in hole is identical, and the line of centres junction of four group of second through hole and point A, the point A and every group of second through hole center connect
The midpoint of line overlaps, the line of centres of four group of second through hole be designated as respectively line of centres L1, line of centres L2, line of centres L3 and
Line of centres L4, the line of centres L1 overlap with the floor projection of the line of centres of two first through hole, line of centres L2, in
Heart line L3 and line of centres L4 is successively 15 degree, 30 degree and 45 degree with line of centres L1 angle.The fixed supporting pillar 51
Pass through two first through hole in the fixed plate 55 and the angle fixed plate 56 between the rotatable supporting pillar 52
On the through hole of one of which second in the fixed plate connecting bolt 58 that sets connect；When the axial direction of incoming vertical direction and pipeline is inclined
When angle is 15 degree, angle fixed plate 56 is rotated 15 degree and then is connected with fixed plate screw 58, as shown in Figure 18-2；When incoming is hung down
Nogata to be 30 degree with the axial inclination of pipeline when, angle fixed plate 56 is rotated 30 degree and then is connected with fixed plate screw 58,
As shown in Figure 18-3；When incoming vertical direction and the axial inclination of pipeline are 45 degree, by angle fixed plate 56 rotate 45 degree it is right
It is connected afterwards with fixed plate screw 58, as shown in Figure 18-4.(the rotatable support device of multispan removes pipeline model support clamp 53
It is the rotatable support device of flow velocity aggrandizement apparatus with clamp fixed plate 59, as shown in Figure 26-1 and Figure 26-2).
As shown in Figure 24-1,24-2,24-3.Open-ended before and after the flow velocity increase cover 30, there is upper and lower side wall 304 and left and right
Side wall 305, its side view are tubaeform, flow velocity increase 30 internal flows of cover, the order flowed through by current, are followed successively by speedup section
306 and steady flow segment 307, speedup section flow velocity increase 30 sections of cover are to contract, and steady flow segment cross sectional shape keeps constant, and current pass through
The speed of speedup section 306 increases to the development stability of steady flow segment 307, and flow velocity increase cover 30 is opened greatly along the left and right side wall of pipe fitting axial direction
Circular hole 303, it is ensured that pipe fitting vibration will not touch flow velocity increase cover.Pipe fitting model is away from side wall 304 above and below flow velocity increase cover, front and rear side
More than 30 times of calibers of edge, the ratio between inlet -duct area and discharge area of speedup section are by testing the flow velocity multiple to be increased, scene is tried
Condition is tested to coordinate to determine.
Trailer in the present invention is made up of dynamical system, brake system, control system etc..Trailer is transverse test support
With the carrier of part measuring and analysis system.
Part measuring and analysis system included in the present invention includes, and resistance strain gage, binding post, wire, pulling force pass
Sensor, termination, strain acquirement instrument, electronic computer etc. are formed.Resistance strain gage connects binding post, binding post connection
Wire, wire connection strain acquirement instrument.
The wire on the outside of the one end of submarine pipeline model 1 and the pulling force sensor is extended in the present invention to adopt with the strain
Collect instrument connection, the strain acquirement instrument is connected with the computer.
The making of the present embodiment device introduced below and installation process：Before the test, first dragged according to the yardstick of towing basin
The speed of car 20, the concrete condition of operating condition of test and the economy of experiment, obtain the specific 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 branch
Hold frame 3, flow velocity aggrandizement apparatus 28, first, second end support meanss 3 and 4 of variable-angle, the multispan support dress of variable-angle
Put 5 material and yardstick and according to structure fabrication.Each instrument and equipment of measuring and analysis system can use respective market purchase.
Exemplified by with the submarine pipeline model for suppressing structure, its manufacturing process is as follows：Along copper first in platform plane
Tube axis direction is relative before and after marking, and four parallel lines opposing upper and lower, determines strain gauge adhesion position.Copper pipe both ends are distinguished
Load onto thick column joint and thin column joint.The oxide layer of strain gauge adhesion position copper pipe surface is removed, pastes foil gauge, it is front and rear
Mutually in a pair, upper and lower foil gauge is mutual in a pair for foil gauge, using half-bridge connection, and by binding post connecting wire, wherein
Foil gauge is separated with the filament that binding post connects and copper pipe surface with thin adhesive tape, to realize insulation, glued in foil gauge
Appropriate silicon rubber is applied at patch, to reach the purpose of protection and waterproof, draws the wire of each position to copper pipe both ends and with thin adhesive tape
Wire is fixed along copper pipe axis direction, if then dried layer heat-shrink tube (makes in its outer surface and silicone tube on copper pipe outer sheath
Intimate surface contact), heat-shrink tube outer sheath last layer silicone tube (if naked pipe structure, then having completed making), from pipe
Left side starts, and a pitch is divided into several pieces, and helix position is determined using spiral wire tag locating ring in each position
Put, be bonded three silica gel strips using helix cemented in place ring, processing silicone tube is not bonded the silica gel of silica gel strip position, makes silica gel
Bar surface is clean smooth clean and tidy, and the silica gel strip of bonding represents the spiral strake during vortex-induced vibration suppresses, and is finally applied at model both ends
Appropriate silicon rubber prevents model from intaking.
By transverse test support 2, first, second end support meanss 3 and 4, the multispan support meanss 5 of variable-angle are pacified
Install, rotating first, second end support meanss 3 and 4 of variable-angle makes its angle board angle pair corresponding with angle scale
Should, even if first, second deflector and direction of flow keeping parallelism.Corresponding varied angle clamp is arranged on the second deflector 44
Rectangle gap in, and by the varied angle pulley cushion block 23 of respective angles be arranged on have steel wire rope by that side second support
On plate 43, then pulley 9 is arranged on the pulley cushion block 23 of varied angle.Flow velocity aggrandizement apparatus 28 is filled by rotatably supporting
29 are put to be fixed on transverse test support, it is rotatable to support device 29 to pass through the screw phase of connecting plate 54 with transverse test support 3
Even, the rotatable both sides of supporting pillar 52 are welded with two and reinforce rope attaching nut 57, and reinforcing rope can be connected with reinforcement by connection rope
Connected nut 57 and pulling force stretcher 12, and be fixed on transverse test support 3.By adjust the size of pulling force stretcher 12 come
Adjustment is rotatable to support the perpendicularity of device 29, and makes bracing reinforcement.Submarine pipeline model 1 is increased into the big of cover 30 through flow velocity
Circular hole 33, the both ends of submarine pipeline model 1 are fixed in first, second end support meanss 3 and 4 of variable-angle.Will be variable
The angle fixed plate of the multispan support meanss 5 of angle rotates corresponding angle and fixed, and phase is installed in the rotatable bottom of supporting pillar 52
The clamp of angle is answered, submarine pipeline model 1 is arranged in the hole of clamp and fixed.The pulling force tensioning of adjustable rooting rope connection
Device 17, to adjust the perpendicularity of the multispan support meanss of varied angle.Led what one end of submarine pipeline model 1 (or both ends) was drawn
Line extends to the both ends of transverse test support 2 along first, second end support meanss 3 and 4 of variable-angle respectively.Will be whole
Experimental rig is placed in the bottom of trailer 20, is sling experimental rig with the loop wheel machine on the top of trailer 20, and makes it with trailer be in respective corners
(15 degree, 30 degree, 45 degree) of degree is arranged on trailer 20.Regulation pulling force stretcher 24 makes end pulling force reach needed for operating condition of test
Size.Pulling force sensor and wire are connected with deformeter, and deformeter connection computer, computer-internal is provided with corresponding data
Collection analysis software.
All appts device installs rear, it is necessary to be debugged., can be by operating mode and test specification after debugging
Tested.
It should be noted last that：Above example only to illustrative and not limiting technical scheme, although on
Embodiment is stated the present invention is described in detail, it will be understood by those within the art that：Still can be to the present invention
Modification or equivalent substitution, any modification or local replacement without departing from the spirit and scope of the present invention, it all should cover
Among scope of the presently claimed invention.
Claims (4)
1. a kind of local velocity increase inclination angle incoming multispan submarine pipeline vortex-induced vibration experimental rig, including submarine pipeline model,
Transverse test support, trailer, strain acquirement instrument and computer, one end of the submarine pipeline model (1) are provided with first end
Support meanss, the other end of the submarine pipeline model (1) are provided with the second end support meanss, the first end support meanss
It is connected with both ends of the top of the second end support meanss respectively with the transverse test support (3), the transverse test branch
Hold the bottom that frame (3) is fixed on the trailer；
The submarine pipeline model (1) includes some wires and a thin-wall copper pipe (101), and the external diameter of the wire is 0.3mm,
The wire is 7 core wires, and the external diameter of the thin-wall copper pipe (101) is 8mm, wall thickness 1mm；From the thin-wall copper pipe (101)
If outer surface successively to being externally provided with the dried layer heat-shrink tube (102) being closely contacted with each other and one layer of silicone tube (103), the thin-walled
The resistance strain gage (104) that multi-disc is used to gather strain, the resistance are provided between copper pipe (101) and the heat-shrink tube (102)
Foil gauge (104)；It is connected by binding post with one end of wire, the other end of wire extends submarine pipeline model (1)
One end；One end of the submarine pipeline model (1) is connected with the first column joint (7), the submarine pipeline mould by pin (6)
The other end of type (1) is connected with the second column joint (8) by pin (6)；
The transverse test support (3) includes subject beam, and two side roof parts of the subject beam are respectively provided with angle scale
(21)；The top of the subject beam is provided with channel-section steel, and the trailer support is on channel-section steel；
The first end support meanss include the first support tube of vertical direction, and water is connected with the top of first support tube
The first angle plate that plain cloth is put, the bottom of first support tube are connected with the first supporting plate, the inner side of first supporting plate
First deflector parallel with first supporting plate is bolted, the bottom of first deflector is provided with one and led to
Hole, the through hole is interior to be provided with a universal coupling (35), and one end of the universal coupling (35) passes through universal coupling spiral shell
Silk (36) is fixed in the first supporting plate, the other end and first on the submarine pipeline model of the universal coupling (35)
Column joint (7) connects；
The second end support meanss include the second support tube of vertical direction, and water is connected with the top of second support tube
The second angle plate that plain cloth is put, the bottom of second support tube are connected with the second supporting plate, the inner side of second supporting plate
Second deflector parallel with second supporting plate is bolted, the bottom of second deflector is provided with one long
Square gap, the rectangle gap is interior to be provided with angle clamp, and the angle clamp is provided with a standpipe mounting hole；The experiment
Include four angle clamps in device, axis and the angle clamp thickness direction of the standpipe mounting hole on each angle clamp
Angle is respectively 0 degree, 15 degree, 30 degree, 45 degree；
The outside of second supporting plate is provided with a pulley (9), is set between the pulley base of the pulley (9) and the second supporting plate
There is pulley base cushion block (23), the pulley base cushion block (23) is wedge, and the lower section of pulley base is located in second supporting plate
It is respectively equipped with a steel wire rope via；Include three pulley base cushion blocks (23), each pulley base cushion block (23) in the experimental rig
On inclined-plane and the second supporting plate (14) contact surface between angle be respectively 15 degree, 30 degree, 45 degree；
A pulling force sensor is connected with the subject beam, positioned at the connection end side with the second end support meanss
(25), the other end of the pulling force sensor (11) is connected with pulling force stretcher (12) and tension spring (13) in turn；It is described to lead
Line and the pulling force sensor (11) couple with the strain acquirement instrument, and the strain acquirement instrument is connected with the computer；
From the second column joint (8) in submarine pipeline model (1), through bypassing institute after the steel wire rope via in the second supporting plate
The other end for stating pulley (9) to tension spring (13) is connected with steel wire rope；The steel wire rope and the submarine pipeline model (1)
Axis is in the same plane；
It is characterized in that：
The middle part of the submarine pipeline model (1) is provided with multispan support meanss (5), the top of the multispan support meanss (5) with
The middle part connection of the transverse test support (3)；The multispan support meanss (5) include fixed supporting pillar (51), rotatable
Supporting pillar (52) and multiple pipeline models support clamp (53)；
Flow velocity aggrandizement apparatus (28) is set with the submarine pipeline model (1), the flow velocity aggrandizement apparatus (28) includes flow velocity
Increase cover (30) and rotatable support device (29) are described rotatably to support device (29) to include fixed supporting pillar (51) and turn
Dynamic supporting pillar (52)；
The top and middle part of the fixed supporting pillar (51) are respectively equipped with connecting plate (54), the bottom of the fixed supporting pillar (51)
It is fixed with fixed plate (55), the fixed plate (55) and the perpendicular arrangement of the fixed supporting pillar (51), the fixed plate (55)
It is provided with two first through hole；
Angled fixed plate (56), the middle part of the rotatable supporting pillar (52) are fixed in the top of the rotatable supporting pillar (52)
Both sides, which are welded with, reinforces rope attaching nut (57)；The angle fixed plate (56) is provided with four group second that two are one group and led to
Hole, the second through hole and the position relationship of first through hole in the fixed plate (55) are on the angle fixed plate (56)：Every group
Two through holes are identical with the centre-to-centre spacing of two first through hole, the line of centres junction of four group of second through hole and point A, the point A with often
The midpoint of the line of centres of the second through hole of group overlaps, and the line of centres of four group of second through hole is designated as line of centres L1, center respectively
Line L2, line of centres L3 and the line of centres L4, the line of centres L1 and the line of centres of two first through hole horizontal throwing
Shadow overlaps, and line of centres L2, line of centres L3 and line of centres L4 are successively 15 degree, 30 degree and 45 with line of centres L1 angle
Degree；Pass through two in the fixed plate (55) between the fixed supporting pillar (51) and the rotatable supporting pillar (52)
The fixed plate connecting bolt (58) set in the through hole of one of which second in first through hole and the angle fixed plate (56) is even
Connect；
The bottom of rotatable supporting pillar (52) in the multispan support meanss (5) is connected with a pipeline model clamp (53)；
Each pipeline model clamp (53) includes the plate body being made up of two half docked, and the joint of the plate body is provided with support
Hole, the upper ends of two half is fixed by screw and the rotatable supporting pillar (52), the lower ends of two half by screw with
One clamp fixed plate (59) is fixed；The angle point of the axis of supported hole and plate body thickness direction on four pipeline model clamps (53)
Wei not be 0 degree, 15 degree, 30 degree and 45 degree；Positioned at the reinforcing rope connection of the on both sides of the middle welding of the rotatable supporting pillar (52)
Oblique pull steel wire rope (15) is respectively equipped between nut (57) and the transverse test support (2), is connected on the oblique pull steel wire rope
It is connected to pulling force stretcher (12)；
The flow velocity increase cover (30) includes speedup section (301) and the steady flow segment (302) sequentially arranged by water (flow) direction, the increasing
Fast section (301) flare, the water inlet end of the speedup section (301) is tubaeform big opening end, and speedup section (301) go out
Water end (W.E.) is tubaeform osculum end, and the openings of sizes of the steady flow segment (302) and tubaeform osculum end are in the same size；The increasing
The water inlet end of fast section (301) and the area ratio of water side are flow velocity aggrandizement apparatus (28) the flow velocity multiple to be increased；
The steady flow segment (302), which is provided with, is used for the through hole that the submarine pipeline model (1) passes through；The rotatable support device
(29) top is fixed on transverse test support (3), the rotatable bottom for supporting device (29) and flow velocity increasing
Big cover (30) welding.
2. local velocity increase inclination angle incoming multispan submarine pipeline vortex-induced vibration experimental rig according to claim 1, it is special
Sign is that silicone tube (103) outer surface of the submarine pipeline model (1) is provided with the silicone band of a plurality of helically wire
(27), the cross section of the silicone band (27) is identical with the shape in the cross section of test pipe spiral strake.
3. local velocity increase inclination angle incoming multispan submarine pipeline vortex-induced vibration experimental rig according to claim 1, it is special
Sign is, on the inner side of first support tube (31) and subject beam between and second support tube (41) inner side and master
Down tube (17) is respectively connected between on body crossbeam.
4. local velocity increase inclination angle incoming multispan submarine pipeline vortex-induced vibration experimental rig according to claim 1, it is special
Sign is that first deflector and the second deflector are plastic plate, on first deflector and second deflector
It is respectively equipped with hog frame.
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| CN201510601049.7A CN105203281B (en) | 2015-09-18 | 2015-09-18 | Local velocity increases inclination angle incoming multispan submarine pipeline vortex-induced vibration experimental rig |
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| 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 |
| 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 |
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| 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 |
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2015
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| 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 |
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