CN101285730A - One-dimensional anchoring rope and vertical tube dynamic characteristics test device - Google Patents
One-dimensional anchoring rope and vertical tube dynamic characteristics test device Download PDFInfo
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- CN101285730A CN101285730A CNA2008100368412A CN200810036841A CN101285730A CN 101285730 A CN101285730 A CN 101285730A CN A2008100368412 A CNA2008100368412 A CN A2008100368412A CN 200810036841 A CN200810036841 A CN 200810036841A CN 101285730 A CN101285730 A CN 101285730A
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Abstract
The invention provides a mooring rope and a riser dynamic characteristic testing device for an ocean structure, belonging to the ocean engineering technical field, comprising a sliding mooring rope and riser testing platform, a shoreside rail-mounted bracket, a replaceable brake bar, an AC servo motor control system, a bottom equidistant anchor point and so on, wherein, the shoreside rail-mounted bracket is fixed on the bank of a water pool; the sliding mooring rope and riser testing platform is arranged in rails of the shore-side rail mounted bracket on the bank; the shoreside rail-mounted bracket and the sliding mooring rope and riser testing platform are horizontally connected through the replaceable brake bar, so that the sliding mooring rope and riser testing platform can be fixed; the AC servo motor control system controls a slide block on the sliding mooring rope and riser testing platform to slide; a mooring rope model or a riser model is hung on the lower end of the slide block of the sliding mooring rope and riser testing platform, and the other end of the mooring rope model or the riser model is fixed on the bottom equidistant anchor point. The device overcomes the defects of difficulty of changing wide horizontal spans, poor control accuracy, difficult operation and so on.
Description
Technical field
What the present invention relates to is the device in a kind of oceanographic engineering field, specifically, is a kind of one-dimensional anchoring rope and vertical tube dynamic characteristics test device.
Background technology
Practical engineering experience proves that mooring system is very important for the motion response of marine structure, how to predict accurately that the motion response of mooring system becomes key subjects in current oceanographic engineering field.When deep water platform or FPSO are carried out model test, correctly simulate its mooring line and standpipe device and play crucial effects for the accuracy of test.Ideally, the physical characteristics of mooring line in the model test and standpipe need all tally with the actual situation.Under the existing situation, check whether mooring line model or riser model meet the demands, and mainly are top tension force-placement properties of seeing model, and promptly whether the static(al) placement property satisfies the expection requirement, and considers that seldom the kinematic behavior of mooring line or standpipe is similar.Think that in the past the horizontal hunting speed of mooring structure thing is very little, can ignore the dynamic action of mooring line, and only consider the static(al) effect of mooring line.And relevant studies show that, mooring line swings damping slowly to the mooring structure thing bigger influence, and the mooring line kinematic behavior has caused more and more researchists' interest.
Find through literature search prior art, Chen Xiaohong, mentioned a kind of test of studying the mooring line kinematic behavior in " succusion is measured the bifrequency response function of mooring line power at random " that Huang Xianglu delivered in fifth phase nineteen ninety-five " Shanghai Communications University's journal ", this test is at long 12m, wide 0.4m, carry out in the tank of dark 0.75m,, measure the dynamic level displacement and the tension force of mooring line upper extreme point by upper end computing machine and the upper end one dimension tangential movement of direct current generator equipment input mooring line.There is following some shortcomings part in this test: (1) motor main shaft comes transmitting movement between the worktable by intermediate links such as leading screws, when infeed mean will be finished action such as startup, acceleration and deceleration, counter-rotating, parking, leading screw is easy to generate elastic deformation, friction, backlass etc., can cause hysteresis and other many nonlinearity errons of feed motion, and then influence is to the quick response of movement instruction.Leading screw is an elongate rod simultaneously, under the effect of power and heat, can produce distortion, influences machining precision.(2) thus need artificial nigration platform change horizontal span significantly, waste time and energy; (3) mooring line and standpipe test platform integral body place tank, and highly limited, the depth of water is restive; (4) the DC servo motor precision is lower, can not accurately control slide block movement; Further in the retrieval, do not find identical with theme of the present invention or similar document.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of one-dimensional anchoring rope and vertical tube dynamic characteristics test device are provided.The present invention on the basis of existing technology, by pulley being installed in mooring line and standpipe test platform bottom, the bracket track design, the pond base fabric is put equidistant anchor point etc., gear, teeth groove orbit Design make the convenient change horizontal span of test; By the global design of bank, pond, the scalable depth of water of the false end, lifting pond makes and tests easy operating more; By using the AC servo motor system instead and PCI servo motion control card replaces original direct current generator, improve test accuracy greatly; By use gear instead, the teeth groove orbit Design replaces original lead screw gear, has improved the motion control precision.
The present invention is achieved by the following technical solutions, the present invention includes: slidingtype mooring line and standpipe test platform, bank rail mounted support, replaceable brake rod, AC servo motor control system, equidistant anchor point at the bottom of mooring line and riser model and the pond, bank rail mounted support is fixed in the bank, pond, slidingtype mooring line and standpipe test platform place in the rail mounted bracket track of bank, thereby connect bank rail mounted support and slidingtype mooring line and standpipe test platform fixedly slidingtype mooring line and standpipe test platform by replaceable brake rod level, slide block movement on AC servo motor control system control slidingtype mooring line and the standpipe test platform, mooring line or riser model are hung by the slide block lower end of slidingtype mooring line and standpipe test platform system, and the mooring line or the riser model other end are fixed at the bottom of the pond on the equidistant anchor point.
Described slidingtype mooring line and standpipe test platform comprise: four pulleys,, a slide rail, slide block, gear, the teeth groove track, shaft coupling, the motor bearing, tuning drive gear, two supporting steel plates and entry bar, connected mode is: slide rail and teeth groove track are fixed between two supporting steel plates, four pulley symmetries are installed in two supporting steel plate lower surfaces, on the rail mounted support of bank, be free to slide simultaneously, realize slidingtype mooring line and the braking of standpipe test platform by the replaceable brake rod between slidingtype mooring line and standpipe test platform and the rail mounted support left end support edge, bank; Place AC servo motor on slidingtype mooring line and the standpipe test platform motor bearing, AC servo motor is by the shaft coupling connection gear, gear rotates on the teeth groove track, slide block is across on the slide rail, the AC servo motor of AC servo motor control system can output class like mode of motion such as sines, driven gear rotates, gear reacts on AC servo motor, motor is fixed on the motor bearing, motor bearing and slide block link together, thereby drive slide block movement, the slide block lower end connects the entry bar, and entry bar lower end connects six-component sensor, displacement transducer and mooring line or standpipe, thus realize control mooring line or the motion in one dimension of standpipe upper extreme point, tuning drive gear is installed in the slide block centre position simultaneously, and tuning drive gear points to the bulkhead wall rule.
Described bank rail mounted support comprises: chute track, bulkhead wall rule.The chute track provides slidingtype mooring line and the required sliding rail of standpipe test platform pulley, is the main part of bank rail mounted support; Bulkhead wall rule mark is used to indicate the relative displacement of slidingtype mooring line and standpipe test platform on the rail mounted support of bank on the bulkhead wall of pond.Bulkhead wall rule and chute parallel track, be positioned at the projected position of chute track on bulkhead wall, by whole slidingtype mooring line and the standpipe test platform of sliding, thereby realize bigger horizontal span, promptly realize floating slowly by a relatively large margin mooring line and vertical tube dynamic characteristics research under the situation.
Described replaceable brake rod comprises the connecting link of different scale, and connecting link is fixed by the bolt and nut on slidingtype mooring line and standpipe test platform and rail mounted stent support limit, bank, thereby arrives the purpose of braking plateform system motion.When test was carried out, slidingtype mooring line and standpipe test platform must be fixed, and only allowed slide block to drive mooring line or standpipe motion, so necessary fixedly slidingtype mooring line and standpipe test platform.Be welded with set bolt at slidingtype mooring line and standpipe test platform left end and bank rail mounted support left end back up pad, be used for fixing connecting link.When the level by a small margin studied is floated the following kinematic behavior of distance slowly, can be by the realization of moving slider position; Medium or float distance significantly slowly down during kinematic behavior when research, need unite mobile slidingtype mooring line and standpipe test platform and slide block and realize.After mobile slidingtype mooring line and standpipe test platform move to certain position, can utilize replaceable brake rod to fix.
Described AC servo motor control system comprises a sets of PCI servo motion control card and a cover AC servo motor.Control procedure is: PCI servo motion control card is accepted the instruction that computing machine sends, and the control AC servo motor is rotated, and AC servo motor cogs with slidingtype mooring line and standpipe test platform and axially is connected, and guarantees synchronized movement.
Equidistant anchor point comprises 0m at the bottom of the described pond, 2m, 4m, 6m ... solid anchor point at the bottom of 8 ponds such as 14m, the 0m point is the vertical below of rail mounted support mid point, bank, all the other points then extend respective distance respectively along pond bulkhead wall direction, when bank rail mounted support span can not satisfy the mooring line level and floats span slowly, can realize bigger horizontal span by equidistant anchor point at the bottom of changing the pond, realize floating slowly more distance power research down.
Described mooring line and riser model comprise the mooring line and the riser model of various diameters, material, length, and its characteristic is dwindled making according to a certain percentage according to actual mooring line and standpipe.
Whole bank design of the present invention, slidingtype mooring line and the design of standpipe test platform, gear, teeth groove orbit Design and AC servo motor control system design have overcome and have changed significantly horizontal span difficulty, control accuracy is poor, be difficult to shortcomings such as operation, can better be used for the test of marine structure mooring line and vertical tube dynamic characteristics.Consider material behavior, because bank rail mounted support need support slidingtype mooring line and standpipe test platform, rigidity requirement is higher, needs to adopt steel structure; Because the motion of test platform has been avoided in the design of replaceable connecting link, can utilize the material slidingtype mooring line and the standpipe test platform of lightweight more simultaneously, make it easy operating more.Because slide block movement depends on the transmission of gear, so slide block need adopt the particularly material of lightweight.The present invention can be used for various forms mooring line or standpipe dynamic test, comprises catenary, tension type etc.
Description of drawings
Fig. 1 is the AC servo motor control system process flow diagram
Fig. 2 is the bank complete layout
Fig. 3 is a bank rail mounted rack assumption diagram
Fig. 4 is slidingtype mooring line and standpipe testing platform system synoptic diagram
Fig. 5 is the general structure synoptic diagram
Among the figure: equidistant anchor point 16, mooring line or riser model 17 and AC servo motor control system 18, teeth groove track 19 at the bottom of pond bank 1, the false end 2, bank rail mounted support 3, chute track 4, bulkhead wall rule 5, slidingtype mooring line and standpipe test platform 6, slide block 7, tuning drive gear 8, entry bar 9, shaft coupling 10, gear 11, slide rail 12, replaceable brake rod 13, pulley 14, supporting steel plate 15, the pond, motor bearing 20.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 5, this example comprises: equidistant anchor point 16 and AC servo motor control system 18 etc. at the bottom of bank rail mounted support 3, slidingtype mooring line and standpipe test platform 6, replaceable brake rod 13, mooring line or riser model 17, the pond.Connected mode is: bank rail mounted support 3 is fixed in the bank, pond, slidingtype mooring line and standpipe test platform 6 place on the bank rail mounted support 3,18 of AC servo motor control system connect slidingtype mooring line and standpipe test platform 6, slidingtype mooring line and standpipe test platform 6 by mooring line or riser model 17 connection pools at the bottom of equidistant anchor point 16.
As shown in Figure 2, bank rail mounted support 3 is fixed in the bank, pond, slidingtype mooring line and standpipe test platform 6 place on the bank rail mounted support 3, and slidingtype mooring line and standpipe test platform 6 connects equidistant anchor point 16 at the bottom of the upper storage reservoirs of the false ends 2 by mooring line or riser model 17.
As shown in Figure 4, slidingtype mooring line and standpipe test platform 6 comprise: slide block 7, tuning drive gear 8, entry bar 9, shaft coupling 10, gear 11,12, four pulleys 14 of slide rail, two supporting steel plates 15, teeth groove track 19, motor bearing 20 etc., connected mode is: slidingtype mooring line and standpipe test platform 6 integral body place on the chute track 4, slidingtype mooring line and standpipe test platform 6 connect AC servo motor control system 18 by shaft coupling 10, motor is installed on the motor bearing 20, is used for control gear 11 motions, and gear 11 is horizontal motion in one dimension on chute track 19, thereby drive slidingtype mooring line and 7 vibratory movements of standpipe test platform top shoe, slide block 7 lower ends riveted joints entry bar 9, entry bar 9 are to hang mooring line or riser model 17, and the mooring line or riser model 17 other ends are fixed at the bottom of the pond on the equidistant anchor point 16.
Described slide rail 12 and teeth groove track 19 are fixed between two supporting steel plates 15, chute track 19 is positioned at the groove in the middle of the slide rail 12, four pulley 14 symmetries are installed in two supporting steel plate 15 lower surfaces, on bank rail mounted support 3, be free to slide simultaneously, brake by replaceable brake rod 13 implementation platforms between slidingtype mooring line and standpipe test platform 6 and the bank rail mounted support 3 left end support edges.
Described slide block 7 is across on the slide rail 12, between lower plane and the slide rail certain distance is arranged on the slide block 12, the AC servo motor of AC servo motor control system 18 can output class like mode of motion such as sines, by 11 motions of shaft coupling 10 driven gears, gear 11 motion in one dimension on teeth groove track 19, thus drive sliding 7 motions in one dimension on slide rail 12.
Described entry bar 9 lower ends connect six-component sensor, displacement transducer, thereby realize control mooring line or the motion in one dimension of standpipe upper extreme point, and tuning drive gear 8 is installed in slide block 7 centre positions simultaneously, the bulkhead wall rule 5 that tuning drive gear 8 points in the bank rail mounted support 3.
Described motor bearing 20 is used for support motor, is used for simultaneously the motion in one dimension of gear 11 is passed to slide block 7.
Described slidingtype mooring line and standpipe test platform length overall are 1350mm, and the slide block range is 1150m,
As shown in Figure 3, bank rail mounted support 3 comprises: chute track 4 and bulkhead wall rule 5.Chute track 4 can provide the required track that slides for slidingtype mooring line and standpipe test platform 6, bulkhead wall rule 5 is that a group of being engraved on the bulkhead wall of pond is the rule of a unit with 5 centimetres, is used to indicate the relative position of slidingtype mooring line and standpipe test platform 6.Chute track 4 mid points are positioned at anchor point 0m point vertical direction at the bottom of the pond.
Described bank rail mounted support 3 total lengths are 6m, and installing needs to guarantee that chute track 4 is parallel with surface level, do not allow obvious inclination angle.
Described chute track 4 length are 6m.
As shown in Figure 1, AC servo motor control system 18 is made up of a sets of PCI servo motion control card and a cover AC servo motor.Control procedure is: computing machine sends instruction and gives PCI servo motion control card, servo motion control card control AC servo motor is rotated, AC servo motor is connected its motion of assurance with the shaft coupling 10 of slidingtype mooring line and standpipe test platform 6 coaxial, and AC servo motor driven gear 11 rotates.
The PCI motion control card is a 4 step-by-step impulse type servo motion control cards based on the pci bus technology, is applied to conventional accurate motion control.It has simplified stepping and the control of pulse servo motion, can improve the exercise performance of motor significantly.This card has adopted MCX314 motion asic chip, and various motion control functions can be provided, as 2/3 axis linear interpolation, and 2 all circular interpolations, T/S curve acceleration/acceleration etc.The PCIPCI motion control is stuck in when carrying out these motion control function control motors in addition, can not increase the burden of processor.AC servo motor adopts Mitsubishi HC-KFS AC servo motor, power 750W, MR-J2S AC servo.
When measuring certain mooring line or vertical tube dynamic characteristics according to research approach, at first support is fixed in relevant position, bank, pond according to noted earlier, regulate slidingtype mooring line and standpipe test platform 6 positions, make its mid point be positioned at the centre position of rail mounted support 3, the i.e. vertical direction of the 0m of equidistant anchor point 16 at the bottom of the pond.Utilize replaceable brake rod 13 fixedly slidingtype mooring line and standpipe test platform 6, its orbital direction is fixed.Regulate AC servo motor control system 18, guarantee its output expection vibratory movement.AC servo motor control system 18 connects control gear 11 motions by slidingtype mooring line and standpipe test platform 6 shaft couplings 10, gear 11 vibratory movement on teeth groove track 20, drive slidingtype mooring line and standpipe test platform 6 top shoes 7 and do the vibratory movement of orbital direction one dimension, slide block 7 lower ends riveted joint entry bar 9, entry bar 9 is to hang mooring line or riser model 17, and the mooring line or riser model 17 other ends are fixed at the bottom of the pond on the equidistant anchor point 16.Can six-component sensor and displacement transducer be installed at mooring line and riser model 17 tops, by analytic record six-component sensor data and displacement transducer data, obtain mooring line or standpipe upper extreme point curve movement and dynamic stress curve, can be used for further studying mooring line and standpipe hydrodynamic force coefficient etc.
Medium or when floating under the situation mooring line and vertical tube dynamic characteristics significantly slowly when needs research, can move left or move right slidingtype mooring line and standpipe test platform 6 to assigned address, can change suitable brake rod 13 fixedly slidingtype mooring line and standpipe test platform 6 simultaneously by 8 location of the tuning drive gear on the slide block 7.When bank rail mounted support 3 extreme positions still can not satisfy horizontal span, can change anchor point 16 positions at the bottom of the pond, move to 4m or 6m position etc. as 2m position at the bottom of from the pond.
Claims (10)
1, a kind of one-dimensional anchoring rope and vertical tube dynamic characteristics test device, it is characterized in that, comprise: slidingtype mooring line and standpipe test platform, bank rail mounted support, replaceable brake rod, AC servo motor control system, equidistant anchor point at the bottom of mooring line and riser model and the pond, wherein: bank rail mounted support is fixed in the bank, pond, slidingtype mooring line and standpipe test platform place in the rail mounted bracket track of bank, thereby connect bank rail mounted support and slidingtype mooring line and standpipe test platform fixedly slidingtype mooring line and standpipe test platform by replaceable brake rod level, slide block on AC servo motor control system control slidingtype mooring line and the standpipe test platform slides, mooring line or riser model are hung by the slide block lower end of slidingtype mooring line and standpipe test platform system, and the mooring line or the riser model other end are fixed at the bottom of the pond on the equidistant anchor point.
2, one-dimensional anchoring rope according to claim 1 and vertical tube dynamic characteristics test device, it is characterized in that, described slidingtype mooring line and standpipe test platform comprise: four pulleys,, a slide rail, slide block, gear, shaft coupling, the teeth groove track, tuning drive gear, two supporting steel plates and entry bar, slide rail and teeth groove track are fixed between two supporting steel plates, four pulleys are to being arranged on two supporting steel plate lower surfaces, motor is placed on the motor bearing, motor is connected by shaft joint with gear, motor bearing and slide block link together, slide block is across on the slide rail, the slide block lower end connects the entry bar, entry bar lower end connects mooring line and riser model, and tuning drive gear is installed in the slide block centre position.
3, one-dimensional anchoring rope according to claim 2 and vertical tube dynamic characteristics test device, it is characterized in that, described four pulleys are realized slidingtype mooring line and the braking of standpipe test platform to being free to slide simultaneously by the replaceable brake rod between slidingtype mooring line and standpipe test platform and the rail mounted support left end support edge, bank on the rail mounted support of bank.
4, one-dimensional anchoring rope according to claim 2 and vertical tube dynamic characteristics test device, it is characterized in that, described entry bar lower end connects six-component sensor, displacement transducer, six-component sensor and displacement transducer are installed in mooring line and riser model top, by analytic record six-component sensor data and displacement transducer data, obtain mooring line or standpipe upper extreme point curve movement and dynamic stress curve.
5, one-dimensional anchoring rope according to claim 1 and vertical tube dynamic characteristics test device, it is characterized in that, described bank rail mounted support comprises: chute track, bulkhead wall rule, bulkhead wall rule mark is on the bulkhead wall of pond, the bulkhead wall rule is used to indicate the relative displacement of slidingtype mooring line and standpipe test platform on the rail mounted support of bank, bulkhead wall rule and chute parallel track are positioned at the projected position of chute track on bulkhead wall.
6, one-dimensional anchoring rope according to claim 5 and vertical tube dynamic characteristics test device, it is characterized in that, the chute track of described bank rail mounted support is parallel with surface level, and the chute track provides slidingtype mooring line and the required sliding rail of standpipe test platform pulley.
According to claim 1 or 6 described one-dimensional anchoring rope and vertical tube dynamic characteristics test devices, it is characterized in that 7, the tuning drive gear in described slidingtype mooring line and the standpipe test platform points to the bulkhead wall rule in the rail mounted support of bank.
8, one-dimensional anchoring rope according to claim 1 and vertical tube dynamic characteristics test device, it is characterized in that, described replaceable brake rod comprises the connecting link of each yardstick, and connecting link is fixed by the bolt and nut on slidingtype mooring line and standpipe test platform and rail mounted stent support limit, bank.
9, one-dimensional anchoring rope according to claim 1 and vertical tube dynamic characteristics test device, it is characterized in that, described AC servo motor control system comprises a sets of PCI servo motion control card and a cover AC servo motor, PCI servo motion control card is accepted the instruction that computing machine sends, the control AC servo motor is rotated, AC servo motor and gear are connected by shaft coupling and guarantee that its motion is coaxial, and the AC servo motor rotation driven gear moves.
10, one-dimensional anchoring rope according to claim 1 and vertical tube dynamic characteristics test device, it is characterized in that, equidistant anchor point comprises 0m at the bottom of the described pond, 2m, 4m, 6m ... solid anchor point at the bottom of 8 ponds such as 14m, the 0m point is the vertical below of rail mounted support mid point, bank, and all the other points then extend respective distance respectively along pond bulkhead wall direction.
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| CN200810036841A CN100585361C (en) | 2008-04-29 | 2008-04-29 | One-dimensional anchoring rope and vertical tube dynamic characteristics test device |
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| CN105004500A (en) * | 2015-06-04 | 2015-10-28 | 浙江海洋学院 | Steel catenary riser integral analysis test apparatus with pipe-soil interaction taken into consideration |
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| CN102353493A (en) * | 2011-07-13 | 2012-02-15 | 天津大学 | Cable water damp tester |
| CN105004500A (en) * | 2015-06-04 | 2015-10-28 | 浙江海洋学院 | Steel catenary riser integral analysis test apparatus with pipe-soil interaction taken into consideration |
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| CN106404343B (en) * | 2016-09-30 | 2018-09-18 | 中国水产科学研究院东海水产研究所 | The test device and measurement method of trawl board hydrodynamic performance |
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| CN107941457B (en) * | 2017-11-24 | 2019-05-10 | 西南石油大学 | A kind of tube bundle flow consolidates Coupled Dynamics vibration testing device and method |
| CN107941457A (en) * | 2017-11-24 | 2018-04-20 | 西南石油大学 | A kind of tube bundle flow consolidates Coupled Dynamics vibration testing device and method |
| CN109596312A (en) * | 2018-12-21 | 2019-04-09 | 河海大学 | A kind of hydrodynamic experimental rig of measurement liquid tank and method |
| CN109596311A (en) * | 2018-12-21 | 2019-04-09 | 河海大学 | A kind of experimental rig and method measuring liquid storage container liquid sloshing power |
| CN111397847A (en) * | 2020-05-11 | 2020-07-10 | 中国船舶科学研究中心 | Dynamic calibration device and calibration method for pool test pipeline model |
| CN111397847B (en) * | 2020-05-11 | 2022-02-18 | 中国船舶科学研究中心 | Dynamic calibration device and calibration method for pool test pipeline model |
| CN113670571A (en) * | 2021-08-17 | 2021-11-19 | 上海交通大学 | Hoisting mooring ocean structure motion response test device under action of different gravity flow |
| CN116086768A (en) * | 2023-04-12 | 2023-05-09 | 中国海洋大学 | Floating ocean platform mooring cable testing device |
| CN116989983A (en) * | 2023-09-26 | 2023-11-03 | 武汉理工大学三亚科教创新园 | Basin test method and device for ocean mooring platform and vertical pipe |
| CN116989983B (en) * | 2023-09-26 | 2023-12-22 | 武汉理工大学三亚科教创新园 | Basin test method and device for ocean mooring platform and vertical pipe |
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