CN110031167A - Simulate two-tube interference dynamic response experimental provision under vertical forced oscillation state - Google Patents
Simulate two-tube interference dynamic response experimental provision under vertical forced oscillation state Download PDFInfo
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- CN110031167A CN110031167A CN201910272486.7A CN201910272486A CN110031167A CN 110031167 A CN110031167 A CN 110031167A CN 201910272486 A CN201910272486 A CN 201910272486A CN 110031167 A CN110031167 A CN 110031167A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
Abstract
The present invention provides a kind of experimental provision for simulating two-tube interference dynamic response under vertical forced oscillation state, includes top movements module, pretension adjustment module, two-tube relative position adjustment module, riser end adjustment module, deep sea vertical pipe group module measure analysis module, bottom locating module.Top movements module is fixed on horizontal trailer, is connect in vertical direction with pretension adjustment module.Deep sea vertical pipe module both ends are sequentially connected riser end adjustment module, two-tube relative position adjustment module, and the two-tube relative position adjustment module in bottom end is connect with bottom locating module.Measurement analysis module is fixed on the support frame of top movements module, and bottom locating module is fixed on the lifting vacation bottom in pond.The configuration of the present invention is simple, operating condition changes quick and convenient in experimentation, and flexibility is high, and operation is simple, and measurement precisely, can simulate two-tube interference vortex-induced vibration under vertical forced oscillation state and respond, analyze its response characteristic.
Description
Technical field
The present invention relates to field of ocean engineering, and in particular, to two-tube under a kind of vertical forced oscillation state of simulation
Interfere dynamic response experimental provision, more particularly, under a kind of vertical forced oscillation state of simulation, two standpipes form two-tube
Interfere the experimental provision of dynamic response under the influence of interference effect.
Background technique
Offshore Platform such as oil exploration platform, work standpipe are long fine flexible structure.Standpipe can be due to top horizontal
The movement of platform, and moving back and forth in water carries out forming a kind of oscillatory flow relative to standpipe, structural fatigue caused by vibrating or
Possible resonance is serious to cause great prestige to the safety of marine structure other than it can accelerate the aging of device work
The side of body.
For Offshore Platform, work standpipe often more than one, such as the four columns of semi-submerged platform, with
And numerous tension legs of tension leg platform (TLP), therefore there are interfere with each other between work standpipe.Due to mutual dry between standpipe
It relates to, the vortex-induced vibration mechanism and phenomenon of two root canals are more complicated for single pipe.From domestic and international researcher to such
From the point of view of the research of phenomenon, with theory carries out Accurate Prediction be it is almost impossible, test be only most effective way.
But present experimental provision is generally existing following insufficient: (1) due to the complexity of experimental provision, two-tube interference phase
It is seldom to close experiment；(2) operating condition is very single with respect to for actual conditions, cannot be preferably to the work standpipe in actual conditions
Vortex-induced vibration is precisely predicted；(3) standpipe strain measurement error is larger causes subsequent arithmetic relatively large deviation occur.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide two-tube under a kind of vertical forced oscillation state of simulation
Interfere dynamic response experimental provision.
Two-tube interference dynamic response experimental provision under a kind of vertical forced oscillation state of the simulation provided according to the present invention, packet
Top movements module is included, pretension adjustment module, two-tube interference system measure analysis module, bottom locating module；
The top of top movements module, top movements module and the one of pretension adjustment module is arranged in measurement analysis module
End connects in vertical direction, and position of the pretension adjustment module on top movements module level direction can be adjusted；
The other end of pretension adjustment module is connect with the upper end of two-tube interference system, the lower end of two-tube interference system
It is connect with bottom locating module；
Measurement analysis module includes data collection processor, vertical movement controller, and the vertical movement controller makes
Two-tube interference system does vertical force and shakes movement, and the data collection processor can acquire two-tube interference system movement number
According to.
Preferably, two-tube interference system includes two-tube relative position adjustment module, riser end adjustment module, deep sea vertical pipe
Group module；
Deep sea vertical pipe group module is made of two standpipes, and the both ends of every standpipe are separately connected a riser end and adjust mould
Block, the lower section of two-tube relative position adjustment module is arranged in the riser end adjustment module connecting with standpipe upper end, under standpipe
The top of two-tube relative position adjustment module is arranged in the riser end adjustment module of end connection.
Preferably, two-tube relative position adjustment module includes two-tube position adjustable plate, supervisor's connecting flange device, looped pipeline company
Acting flange device, center flange device, nut；
Supervisor's connecting flange device, looped pipeline connecting flange device are connected with a corresponding standpipe respectively；
Two-tube position adjustable plate is connected by center flange device with pretension adjustment module, on two-tube position adjustable plate
It is provided with looped pipeline shifting chute, looped pipeline connecting flange device is fixed in the looped pipeline shifting chute by nut, two-tube to adjust
Spacing.
Preferably, riser end adjustment module includes three component instrument sensors, riser end fixture, universal joint and screw；
The fixing end of universal joint is connect with riser end fixture, one end of the movable end of universal joint and three component instrument sensors
The other end of connection, three component instrument sensors is connected with supervisor's connecting flange device or looped pipeline connecting flange device, three component
The data of instrument sensor are acquired by data collection processor；
Riser end fixture clamps standpipe, and screw can adjust standpipe by connecting with the threaded hole of riser end fixture
Clamped degree.
Preferably, the surface of standpipe is evenly arranged with fibre optical sensor, and fibre optical sensor can measure the movement of standpipe, light
The data of fiber sensor are acquired by data collection processor.
Preferably, top movements module include guide chain, it is support frame, top horizontal positioning track, top positioning sliding block, vertical
Sliding rail, Power Component, upright slide block, radome fairing；
Measurement analysis module is connect with support frame, and the top of top horizontal positioning track is arranged in support frame；
Top horizontal positioning track is connect with guide chain；
Guide chain drives top positioning sliding block to adjust position, top positioning on top horizontal positioning track by Power Component
Sliding block is connect with radome fairing；
Power Component is by vertical movement controller driving；
Vertical sliding track is arranged on radome fairing, and upright slide block can slide in vertical sliding track.
Preferably, pretension adjustment module includes end coupling, stretcher fixed plate and pressure spring tension assembly；
One end of end coupling is connect with upright slide block, and the other end of end coupling is connected with stretcher fixed plate
It connects, pressure spring tension assembly can adjust the motion tension of two-tube interference system.
Preferably, bottom locating module includes bottom level positioning track, bottom positioning sliding block, bottom Power Component, vacation
Bottom；
Bottom level positioning track is arranged on false bottom, and bottom level positioning track is parallel with top horizontal positioning track,
Bottom Power Component drives bottom positioning sliding block to slide on bottom level positioning track；
Bottom positioning sliding block is connected with riser end adjustment module, and bottom Power Component is driven by vertical movement controller
It is dynamic.
Preferably, measurement analysis module includes display, and the display being capable of real-time monitoring experimental result.
Compared with prior art, the present invention have it is following the utility model has the advantages that
1, the operating condition quantity that the present invention includes is more, great representativeness, and standpipe used is real work standpipe reduced scale,
The vortex-induced vibration response condition of the work standpipe in real work can more be simulated；
2, the present invention more simplifies, convenient disassembly relative to other same devices, and operating condition conversion is easy, this is compared to other
It is a huge progress for test device；
3, flexibility of the present invention is high, by the cooperation of pretension adjustment module and three component instrument sensors, it can be achieved that opposition
Pipe pretension being precisely controlled and adjusting, can be adjusted according to actual condition.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the structural schematic diagram of experimental provision provided by the invention；
Fig. 2 is the top structure figure of experimental provision provided by the invention；
Fig. 3 is the chart at the bottom of of experimental provision provided by the invention；
Fig. 4 is the structural schematic diagram of top movements module provided by the invention；
Fig. 5 is the structural schematic diagram of pretension adjustment module provided by the invention；
Fig. 6 is the structural schematic diagram of two-tube relative position adjustment module provided by the invention；
Fig. 7 is the side view of two-tube relative position adjustment module provided by the invention；
Fig. 8 is the structural schematic diagram of riser end adjustment module provided by the invention；
Fig. 9 is the scheme of installation of riser end provided by the invention；
Figure 10 is the structural schematic diagram of bottom locating module provided by the invention；
Figure 11 is the structural schematic diagram of deep sea vertical pipe provided by the invention；
It is shown in figure:
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
The present invention provides a kind of simulate under vertical forced oscillation state for deficiency existing for above-mentioned existing experimental provision
Two-tube interference dynamic response experimental provision.Two-tube interference dynamic response under vertical forced oscillation state can be simulated, and studies it
Response characteristic.With closing to reality situation, operating condition cover it is wide, the advantages that device convenient disassembly, save the cost.
Two-tube interference dynamic response experimental provision under a kind of vertical forced oscillation state of the simulation provided according to the present invention, packet
Top movements module 1 is included, pretension adjustment module 2, two-tube interference system measure analysis module 7, bottom locating module 6；
The top of top movements module 1, top movements module 1 and pretension adjustment module 2 is arranged in measurement analysis module 7
One end connect in vertical direction, and position of the pretension adjustment module 2 in 1 horizontal direction of top movements module can adjust
Section；
The other end of pretension adjustment module 2 is connect with the upper end of two-tube interference system, the lower end of two-tube interference system
Portion is connect with bottom locating module 6；
Measuring analysis module 7 includes data collection processor, vertical movement controller, and the vertical movement controller makes
Two-tube interference system does vertical force and shakes movement, and the data collection processor can acquire two-tube interference system movement number
According to.
Specifically, two-tube interference system includes that multitube relative position adjustment module 3, riser end adjustment module 4, deep-sea are vertical
Pipe group module 5；
Deep sea vertical pipe group module 5 is made of two standpipes 35, and the both ends of every standpipe are separately connected a riser end tune
Module 4 is saved, the lower section of two-tube relative position adjustment module 3 is arranged in the riser end adjustment module 4 connecting with 35 upper end of standpipe,
The top of two-tube relative position adjustment module 3 is arranged in the riser end adjustment module 4 connecting with 35 lower end of standpipe.
Specifically, two-tube relative position adjustment module 3 include two-tube position adjustable plate 19, supervisor connecting flange device 21,
Looped pipeline connecting flange device 22, center flange device 23, nut 24；
Supervisor's connecting flange device 21, looped pipeline connecting flange device 22 are connected with a corresponding standpipe 35 respectively；
Two-tube position adjustable plate 19 is connected by center flange device 23 with pretension adjustment module 2, two-tube position tune
Looped pipeline shifting chute 20 is provided on section plate 19, looped pipeline connecting flange device 22 is fixed on the looped pipeline shifting chute by nut 24
In 20, to adjust two-tube spacing.
Specifically, riser end adjustment module 4 includes three component instrument sensors 26, riser end fixture 27, universal joint 28
With screw 25；
The fixing end of universal joint 28 is connect with riser end fixture 27, the movable end of universal joint 28 and three component instrument sensors
26 one end connection, the other end and supervisor's connecting flange device 21 or looped pipeline connecting flange device 22 of three component instrument sensors 26
It is connected, the data of three component instrument sensors 26 are acquired by data collection processor；The three component instrument sensors can measure
Standpipe both ends are axial, flow to and flow to vertical stress value；
Riser end fixture 27 clamps standpipe 35, and screw 25, can by connecting with the threaded hole of riser end fixture 27
Adjust the clamped degree of standpipe 35.The three component instrument sensor measurement standpipe both ends are axial, flow to and flow to vertical
Stress value.
Specifically, the surface of standpipe 35 is evenly arranged with fibre optical sensor 36, and fibre optical sensor 36 can measure standpipe 35
Movement, the data of fibre optical sensor 36 acquire by data collection processor.
Specifically, top movements module 1 includes guide chain 8, support frame 9, top horizontal positioning track 10, top positioning sliding block
11, vertical sliding track 12, Power Component 13, upright slide block 14, radome fairing 15；
Measurement analysis module 7 is connect with support frame 9, and the top of top horizontal positioning track 10 is arranged in support frame 9；
Top horizontal positioning track 10 is connect with guide chain 8；
Guide chain 8 drives top positioning sliding block 11 to adjust position on top horizontal positioning track 10 by Power Component 13,
Top positioning sliding block 11 is connect with radome fairing 15；
Power Component 13 is by vertical movement controller driving；
Vertical sliding track 12 is arranged on radome fairing 15, and upright slide block 14 can slide in vertical sliding track 12,
To adjust two-tube interference system in the relative position of vertical direction.
Specifically, pretension adjustment module 2 includes end coupling 16, stretcher fixed plate 17 and pressure spring tension assembly
18；
One end of end coupling 16 is connect with upright slide block 14, the other end and stretcher fixed plate of end coupling 16
17 are connected, and pressure spring tension assembly 18 can adjust the motion tension of two-tube interference system.Pretension adjustment module bottom
It is connect with two-tube relative position adjustment module, fine adjustments is carried out to standpipe pretension by the regulating system of itself.
Specifically, bottom locating module 6 includes bottom level positioning track 31, bottom positioning sliding block 30, bottom power packages
Part 29, false bottom 32；
Bottom level positioning track 31 is arranged on false bottom 32, bottom level positioning track 31 and top horizontal positioning track
10 is parallel, and bottom Power Component 29 drives bottom positioning sliding block 30 to slide on bottom level positioning track 31；False bottom 32 is steady
It is fixed on the vacation bottom of pond, false bottom 32 has the characteristics that big quality and stable, to guarantee the overall stability of experimental provision；
Bottom positioning sliding block 30 is connected with riser end adjustment module 4, and bottom Power Component 29 is controlled by vertical movement
Device driving.
Specifically, measurement analysis module 7 includes display, and the display being capable of real-time monitoring experimental result.
Preference of the invention is further elaborated below in conjunction with attached drawing.
As shown in figs. 1-11, the embodiment of the invention provides two-tube interference power under a kind of vertical forced oscillation state of simulation
Experimental provision is responded, includes top movements module 1, pretension adjustment module 2, two-tube relative position adjustment module 3, riser end
Adjustment module 4, deep sea vertical pipe group module 5 measure analysis module 7, bottom locating module 6.
The measurement analysis module 7 is fixed in top movements module 1 by support frame 9, the top horizontal positioning
Track 10 is connect with guide chain 8, and guide chain 8 drives top positioning sliding block 11 to adjust on horizontal location track 10 by Power Component 13
Fixed, top positioning sliding block 11 and radome fairing 15 are affixed, and vertical sliding track 12 is fixed on radome fairing 15, and upright slide block 14 can
To be slided in vertical sliding track 12.
The pretension adjustment module 2 includes end coupling 16, stretcher fixed plate 17 and pressure spring tension assembly 18.End
Portion's connector 16 and upright slide block 14 are fixed, and module bottom is solid by top link 33 and two-tube relative position adjustment module 3
It is fixed.
The two-tube relative position adjustment module 3 includes two-tube position adjustable plate 19, supervisor connecting flange device 21, looped pipeline
Connecting flange device 22, center flange device 23 and nut 24.The center flange device 23 at two-tube interference system both ends respectively with
Top link 33 and bottom linker 34 are fixed, and fixed with two-tube position adjustable plate 19.It is responsible for connecting flange device 21
Fixed with nut 24 with two-tube 19 center of position adjustable plate, looped pipeline connecting flange device 22 is fixed on plate 19 by nut 24
In looped pipeline shifting chute 20.
The riser end adjustment module 4 includes three component instrument sensors 26, riser end fixture 27, universal joint 28 and spiral shell
Silk 25.The three component instrument sensor 26 and the supervisor's connecting flange device 21 and looped pipeline of two-tube relative position adjustment module 3 connect
Acting flange device 22 is fixed, and the riser end fixture 27 is used for the fixation of 5 neutral tube 35 of deep sea vertical pipe group module.
The deep sea vertical pipe group module 5 is made of more standpipes 35 and its surface fibre optical sensor 36, fibre optical sensor 36
It is evenly arranged on each deep sea vertical pipe 35.Standpipe upper and lower side and riser end fixture 27 are fixed by screw 25.
The measurement analysis module 7 includes: data collection processor, motion controller and display.Wherein: described
Data collection processor is used to acquire the data of each three component instrument sensor 26 of two-tube interference system, fibre optical sensor, described
Kinetic control system is used to control the movement of Power Component 13 and bottom Power Component 29, and the display is used for real-time monitoring
Experimental result.
The bottom locating module 6 includes: bottom level positioning track 31, bottom positioning sliding block 30, bottom Power Component
29 and small false bottom 32.The bottom level positioning track 30 is parallel with top horizontal positioning track 10, and the bottom positioning is slided
Block 30 and bottom linker 34 are fixed.
This specific implementation working principle: before experiment, fiber-optic grating sensor being evenly arranged in deep sea vertical pipe group module,
The both ends of standpipe are sequentially connected riser end adjustment module, two-tube relative position adjustment module.At the top of two-tube interference system and in advance
Tension adjustment module, top movements module are affixed, and bottom is connected with bottom locating module., when test, by the lifting at false bottom
Specified form is presented so that riser model reaches specified position with the movement of trailer, mould is adjusted by two-tube relative position
Block adjusts standpipe spacing, controls motor by the computer in measurement analysis module, so that standpipe does vertical forced oscillation campaign, stands
The movement of pipe is recorded by high-speed camera, is strained by fiber sensor measuring, and data are transmitted to computer and are post-processed.
In experiment, due to the effect of the devices such as radome fairing, influence of the experimental provision in addition to standpipe to water flow is weakened, is protected
The precision and accuracy of experiment are demonstrate,proved.
In the description of the present application, it is to be understood that term " on ", "front", "rear", "left", "right", " is erected at "lower"
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is orientation based on the figure or position
Relationship is set, description the application is merely for convenience of and simplifies description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (9)
1. a kind of simulate two-tube interference dynamic response experimental provision under vertical forced oscillation state, which is characterized in that including top
Motion module (1), pretension adjustment module (2), two-tube interference system measure analysis module (7), bottom locating module (6)；
It measures analysis module (7) setting and adjusts mould in the top of top movements module (1), top movements module (1) and pretension
One end of block (2) connects in vertical direction, and position of the pretension adjustment module (2) in top movements module (1) horizontal direction
Setting can be adjusted；
The other end of pretension adjustment module (2) is connect with the upper end of two-tube interference system, the lower end of two-tube interference system
It is connect with bottom locating module (6)；
Measurement analysis module (7) includes data collection processor, vertical movement controller, and the vertical movement controller makes double
Pipe interference system does vertical force and shakes movement, and the data collection processor can acquire two-tube interference system exercise data.
2. according to claim 1 simulate two-tube interference dynamic response experimental provision under vertical forced oscillation state, spy
Sign is that two-tube interference system includes two-tube relative position adjustment module (3), riser end adjustment module (4), deep sea vertical pipe group
Module (5)；
Deep sea vertical pipe group module (5) You Lianggen standpipe (35) composition, the both ends of every standpipe are separately connected a riser end tune
It saves module (4), the riser end adjustment module (4) connecting with standpipe (35) upper end is arranged in two-tube relative position adjustment module
(3) lower section, the riser end adjustment module (4) connecting with standpipe (35) lower end are arranged in two-tube relative position adjustment module
(3) top.
3. according to claim 2 simulate two-tube interference dynamic response experimental provision under vertical forced oscillation state, spy
Sign is that two-tube relative position adjustment module (3) includes two-tube position adjustable plate (19), supervisor connecting flange device (21), pair
Pipe connecting flange device (22), center flange device (23), nut (24)；
Supervisor connecting flange device (21), looped pipeline connecting flange device (22) are connected with a corresponding standpipe (35) respectively；
Two-tube position adjustable plate (19) is connected by center flange device (23) with pretension adjustment module (2), two-tube position
It is provided on adjustable plate (19) looped pipeline shifting chute (20), looped pipeline connecting flange device (22) is fixed on described by nut (24)
In looped pipeline shifting chute (20), to adjust two-tube spacing.
4. according to claim 2 simulate two-tube interference dynamic response experimental provision under vertical forced oscillation state, spy
Sign is that riser end adjustment module (4) includes three component instrument sensors (26), riser end fixture (27), universal joint (28)
With screw (25)；
The fixing end of universal joint (28) is connect with riser end fixture (27), and the movable end of universal joint (28) and three component instrument sense
One end of device (26) connects, the other end and supervisor connecting flange device (21) or the looped pipeline connection method of three component instrument sensors (26)
Blue device (22) is connected, and the data of three component instrument sensors (26) are acquired by data collection processor；
Riser end fixture (27) clamp standpipe (35), screw (25) by being connect with the threaded hole of riser end fixture (27),
The clamped degree of standpipe (35) can be adjusted.
5. according to claim 2 simulate two-tube interference dynamic response experimental provision under vertical forced oscillation state, spy
Sign is that the surface of standpipe (35) is evenly arranged with fibre optical sensor (36), and fibre optical sensor (36) can measure standpipe (35)
Movement, the data of fibre optical sensor (36) acquire by data collection processor.
6. according to claim 1 simulate two-tube interference dynamic response experimental provision under vertical forced oscillation state, spy
Sign is that top movements module (1) includes guide chain (8), support frame (9), top horizontal positioning track (10), top positioning sliding block
(11), vertical sliding track (12), Power Component (13), upright slide block (14), radome fairing (15)；
Measurement analysis module (7) is connect with support frame (9), and support frame (9) is arranged in the top of top horizontal positioning track (10)；
Top horizontal positioning track (10) is connect with guide chain (8)；
Guide chain (8) drives top positioning sliding block (11) to adjust position on top horizontal positioning track (10) by Power Component (13)
It sets, top positioning sliding block (11) is connect with radome fairing (15)；
Power Component (13) is by vertical movement controller driving；
Vertical sliding track (12) is arranged on radome fairing (15), and upright slide block (14) can be slided on vertical sliding track (12)
It is dynamic.
7. according to claim 7 simulate two-tube interference dynamic response experimental provision under vertical forced oscillation state, spy
Sign is that pretension adjustment module (2) includes end coupling (16), stretcher fixed plate (17) and pressure spring tension assembly
(18)；
One end of end coupling (16) is connect with upright slide block (14), and the other end of end coupling (16) is fixed with stretcher
Plate (17) is connected, and pressure spring tension assembly (18) can adjust the motion tension of two-tube interference system.
8. according to claim 7 simulate two-tube interference dynamic response experimental provision under vertical forced oscillation state, spy
Sign is that bottom locating module (6) includes bottom level positioning track (31), bottom positioning sliding block (30), bottom Power Component
(29), false bottom (32)；
Bottom level positioning track (31) is arranged on false bottom (32), bottom level positioning track (31) and top horizontal positioning rail
In parallel, bottom Power Component (29) drives bottom positioning sliding block (30) to slide on bottom level positioning track (31) in road (10)；
Bottom positioning sliding block (30) is connected with riser end adjustment module (4), and bottom Power Component (29) is controlled by vertical movement
Device driving processed.
9. according to claim 1 simulate two-tube interference dynamic response experimental provision under vertical forced oscillation state, spy
Sign is that measurement analysis module (7) includes display, and the display being capable of real-time monitoring experimental result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910272486.7A CN110031167A (en) | 2019-04-04 | 2019-04-04 | Simulate two-tube interference dynamic response experimental provision under vertical forced oscillation state |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910272486.7A CN110031167A (en) | 2019-04-04 | 2019-04-04 | Simulate two-tube interference dynamic response experimental provision under vertical forced oscillation state |
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| CN107478408A (en) * | 2017-08-16 | 2017-12-15 | 中国海洋石油总公司 | One kind simulation uniform flow effect lower standing tube array dynamic response experimental provision |
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|---|---|---|---|---|
| CN102194392A (en) * | 2011-03-25 | 2011-09-21 | 华南理工大学 | Quality detection method for LED (Light Emitting Diode) nixie tube |
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| CN104002262A (en) * | 2014-05-16 | 2014-08-27 | 浙江吉利控股集团有限公司 | Support used for scanning of brake hard tube |
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Application publication date: 20190719 |