CN102313638A - Bidirectional forced vibration experimental apparatus for deep sea riser segment model under action of uniform flow - Google Patents
Bidirectional forced vibration experimental apparatus for deep sea riser segment model under action of uniform flow Download PDFInfo
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Abstract
The invention is suitable for the field of the oceanographic engineering and provides a bidirectional forced vibration experimental apparatus for a deep sea riser segment model under the action of uniform flow. The bidirectional forced vibration experimental apparatus comprises a deep sea riser module, end part prosthesis modules, horizontal sliding modules, vertical sliding modules and a measurement analysis control module, wherein both ends of the deep sea riser module are respectively connected with the end part prosthesis modules; the vertical sliding modules are respectively connected with the corresponding end part prosthesis modules and the corresponding horizontal sliding modules; the horizontal sliding modules are fixedly connected with the bottom of a trailer; and the measurement analysis control module is arranged on the trailer and is connected with the end part prosthesis modules, the horizontal sliding modules and the vertical sliding modules. In the invention, large-scale riser segments are adopted, so that a test Reynolds number is in the range of 106 for avoiding the scale effect; the double freedom degree forced movement is adopted to truly simulate the vortex-induced vibration form of a riser; and meanwhile, due to the adoption of end part prosthesis, the problem of the boundary effect at both sides of the model in an experiment is solved.
Description
Technical field
The invention belongs to the oceanographic engineering field, relate in particular to the two-way vibration testing device that forces of deep-sea standpipe segmented model under a kind of equal uniform flow effect.
Background technology
Standpipe in the actual marine environment is the elongated flexible structure, under the effect of ocean current, can produce vortex-induced vibration.This vibration is that self-excitation produces as far as whole standpipe; If but considered that each joint can be regarded as the segmentation of rigid body, so this vibration but would be forced oscillation.Because each fraction of compliant riser can be seen the rigid cylindrical body as; So want to further investigate the vortex-induced vibration characteristic of elongated flexible marine riser under the ocean current effect of true environment; Can start with from the simple question of microcosmic, promptly stressed, the motion response of the rigid cylindrical body in the forced oscillation under the uniform incoming flow effect, wake flow form etc. studied.
The paper that Ramnarayan Gopalkrishnan delivered at MIT in 1993 " Vortex-Introduced Forces on Oscillating Bluff Cylinders " (the stressed research of the vortex-induced vibration of cylinder) is about rigidity pipe fitting vortex-induced vibration experimental study; Mentioned a kind of rigidity pipe fitting vortex-induced vibration model test technology in the literary composition; Be horizontally placed on rigid riser in the towing basin, trailer drags riser model and produces uniform flow field.Through analyzing, the weak point of this experimental technique is:
1, test is too elongated with the standpipe segmentation; As once the someone to get the segmentation diameter be 2.54cm, length is 60cm, this just causes its device can only simulate the vortex-induced vibration under the low reynolds number; Can not simulate the high reynolds number state under the true sea situation, occur scale effect easily; 2, test can only be carried out the vortex-induced vibration simulation of one degree of freedom, can not simulate riser vortex excited vibration form very accurately; 3, the border is not effectively handled, the model boundary effect can influence experimental result.
Summary of the invention
The present invention is directed to the technical matters that exists in the above-mentioned prior art; A kind of two-way vibration testing device that forces of deep-sea standpipe segmented model that evenly flows down is provided; Be intended to solve existing test unit and can only simulate, can only and not have the riser segmentation to carry out the problem of boundary treatment with single-degree-of-freedom forced vibration simulation vortex-induced vibration than the low reynolds number sea situation.
The present invention realizes through following technical scheme; A kind of two-way vibration testing device that forces of deep-sea standpipe segmented model that evenly flows down; Comprise deep-sea standpipe module, first end prosthese module, the second end prosthese module, the first vertical sliding mould piece, the second vertical sliding mould piece, the first horizontal slip module, the second horizontal slip module and Measurement and analysis control module; Wherein: standpipe module two ends, deep-sea are connected with the second end prosthese module with first end prosthese module respectively; The first vertical sliding mould piece is connected with the first horizontal slip module with first end prosthese module respectively; The second vertical sliding mould piece is connected with the second horizontal slip module respectively at the second end prosthese module; The first horizontal slip module is fixedly connected with trailer bottom one end and is connected with the first vertical sliding mould piece; The second horizontal slip module is fixedly connected with the trailer bottom other end and is connected with the second vertical sliding mould piece, and the Measurement and analysis control module is arranged on the trailer, is connected with first end prosthese module, the second end prosthese module, the first vertical sliding mould piece, the second vertical sliding mould piece, the first horizontal slip module, the second horizontal slip module respectively.
Described deep-sea standpipe module comprises: two standpipe fixture splices and deep-sea riser model; Wherein: riser model two ends, deep-sea are connected with two standpipe fixture splices respectively, and two standpipe fixture splices are connected with the second end prosthese module with first end prosthese module respectively.
Described first end prosthese module comprises: prosthese urceolus, three component appearance, three component appearance fixed heads, voussoir, bearing, adjustment assembly, fixed head, backing plate, flow-stopping plate; Wherein: prosthese urceolus and flow-stopping plate are fixed, three component appearance respectively with deep-sea standpipe module in fixture splice link to each other with three component appearance fixed heads, three component appearance fixed heads, one end is connected with three component appearance; The other end and voussoir are affixed; Voussoir runs through flow-stopping plate, and inboard affixed with bearing and flow-stopping plate at flow-stopping plate, and the voussoir of flow-stopping plate opposite side is connected with backing plate; Fixed head is affixed through backing plate and voussoir, and the adjustment assembly is affixed with the fixed head and the first vertical sliding mould piece respectively; Described the second end prosthese module and first end prosthese module are mirror image.
The described first horizontal slip module comprises: Power Component, flange apparatus, slide block, lead chain, sliding rail, bracing frame; Wherein: Power Component links to each other with sliding rail through flange apparatus, and its turning axle is connected to slide block through leading chain, and slide block is slidably supported on the sliding rail; And with the first vertical sliding mould piece Joint; Bracing frame upper end is affixed with trailer, and lower end and sliding rail are affixed, and sliding rail is parallel at the bottom of the towing basin pond and is vertical with the first vertical sliding mould piece; The described second horizontal slip module becomes mirror image with the first horizontal slip module.
The described first vertical sliding mould piece comprises: Power Component, flange apparatus, slide block, lead chain, sliding rail and radome fairing; Wherein: Power Component links to each other with sliding rail through flange apparatus; Its turning axle is connected to slide block through leading chain; Slide block is slidably supported on the sliding rail, and with first end prosthese module Joint; Sliding rail perpendicular to the towing basin pond at the bottom of and vertical with the first horizontal slip module, its upper end be connected with the first horizontal slip module, the lower end freedom is unsettled; The both sides of sliding rail are equipped with radome fairing; The described second vertical sliding mould piece becomes mirror image with the first vertical sliding mould piece.
Described Measurement and analysis control module comprises: data acquisition unit, motion controller and display, and wherein: two three component appearance in above-mentioned first and second end prosthese module of the input end of data acquisition unit are wanted to connect, and its output terminal is connected with display; Motion controller has two output ports, and motion control output port and above-mentioned first and second vertical sliding mould piece are connected with quadruplet Power Component in first and second horizontal slip module, and the image display port is connected with display.
Said deep-sea riser model diameter is 250mm, and length is 3m.
Advantage and good effect that the present invention has are:
The present invention adopts special end prosthetic appliance; First and second end prosthese module wherein is fixed on the slide block, and separate with mid-module, formwork erection type two ends directly are fixed on the slide block through dynamometer; So the data that dynamometer measures are power actual suffered on the mid-module; And first and second end prosthese module has played the effect of making the simulation flow field, but measurement mechanism is not directly exerted an influence, and has solved the problem that boundary effect appears in model both sides in the experiment.The standpipe segmentation diameter that the present invention adopts can reach 250mm, and length can reach 3m, and slenderness ratio has reached 12, and so in normal trailer movement velocity scope, operating condition of test can reach real Reynolds number 10
6Scope has effectively been avoided scale effect.The present invention adopts two groups of propulsion system, can on both direction, carry out the forced vibration of various amplitude different frequency, and real simulated vortex-induced vibration more is to obtain more real test findings.
Description of drawings
Fig. 1 is the scheme of installation of experimental provision on trailer that the embodiment of the invention provides.
Fig. 2 is the structural representation of the experimental provision that provides of the embodiment of the invention.
Fig. 3 is the vertical view of the experimental provision that provides of the embodiment of the invention.
Fig. 4 is the structural representation of the deep-sea standpipe module that provides of the embodiment of the invention.
Fig. 5 is the structural representation of the end prosthese module that provides of the embodiment of the invention.
Fig. 6 is the structural representation of the vertical sliding mould piece that provides of the embodiment of the invention.
Fig. 7 is the side view of the vertical sliding mould piece that provides of the embodiment of the invention.
Fig. 8 is the structural representation of the horizontal slip module that provides of the embodiment of the invention.
Fig. 9 is the vertical view of the horizontal slip module that provides of the embodiment of the invention.
Figure 10 is the structured flowchart of the Measurement and analysis control module that provides of the embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Like Fig. 1, Fig. 2 and shown in Figure 3; This device comprises: deep-sea standpipe module 1, first end prosthese module 2, the second end prosthese module 3, the first vertical sliding mould piece 4, the second vertical sliding mould piece 5, the first horizontal slip module 6, the second horizontal slip module 7 and Measurement and analysis control module 8; Wherein: standpipe module 1 two ends, deep-sea are connected with the second end prosthese module 3 with first end prosthese module 2 respectively; The first vertical sliding mould piece 4 is connected with the first horizontal slip module 6 with first end prosthese module 2 respectively; The second vertical sliding mould piece 5 is connected with the second horizontal slip module 7 with the second end prosthese module 3 respectively; The first horizontal slip module 6 is fixedly connected with trailer 9 bottoms one end and is connected with the first vertical sliding mould piece 4; The second horizontal slip module 7 is fixedly connected with the trailer 9 bottom other ends and is connected with the second vertical sliding mould piece 5; Measurement and analysis control module 8 is arranged on the trailer 9, is connected with first end prosthese module 2, the second end prosthese module 3, the first horizontal slip module 6, the second horizontal slip module 7, the first vertical sliding mould piece 4, the second vertical sliding mould piece 5 respectively.Trailer 9 moves ahead with certain speed along continuous straight runs in towing basin 10.
Like Fig. 2 and shown in Figure 4; Described deep-sea standpipe module 1 comprises: two standpipe fixture splices 102,103 and deep-sea riser model 101; Wherein: riser model 101 two ends in deep-sea are connected with two standpipe fixture splices 102,103 respectively, and two standpipe fixture splices 102,103 are connected with the second end prosthese module 3 with first end prosthese module 2 respectively.Standpipe fixture splice 102,103 is for being fixedly connected, and it is loosening to avoid riser model when experiment, to take place.
Like Fig. 2 and shown in Figure 5; Described first end prosthese module 2 comprises: prosthese urceolus 201, three component appearance 202, three component appearance fixed heads 203, voussoir 204, bearing 205, adjustment assembly 206, fixed head 207, backing plate 208, flow-stopping plate 209; Wherein: prosthese urceolus 201 is fixing with flow-stopping plate 209; Three component appearance 202 respectively with deep-sea standpipe module 1 in fixture splice 102,103 link to each other with three component appearance fixed heads 203; Three component appearance fixed heads, 203 1 ends are connected with three component appearance 202, and the other end and voussoir 204 are affixed, and voussoir 204 runs through flow-stopping plate 209; And it is inboard affixed with bearing 205 and flow-stopping plate 209 at flow-stopping plate 209; The voussoir 204 of flow-stopping plate 209 opposite sides is connected with backing plate 208, and fixed head 207 is affixed through backing plate 208 and voussoir 204, and adjustment assembly 206 is affixed with the fixed head 207 and the first vertical sliding mould piece 4 respectively.The second end prosthese module 3 is mirror image with first end prosthese module 2, repeats no more at this.
Like Fig. 2, Fig. 8 and shown in Figure 9; The described first horizontal slip module 6 comprises: Power Component 601, flange apparatus 602, slide block 603, lead chain 604, sliding rail 605 and bracing frame 606; Wherein: Power Component 601 links to each other with sliding rail 605 through flange apparatus 602, and its turning axle is connected to slide block 603 through leading chain 604, and slide block 603 is slidably supported on the sliding rail 605; And with the first vertical sliding mould piece, 4 Joints; Bracing frame 606 upper ends and trailer 9 are affixed, and lower end and sliding rail 605 are affixed, and sliding rail 605 is parallel at the bottom of the towing basin pond and is vertical with the first vertical sliding mould piece 4; 6 one-tenth mirror image of the described second horizontal slip module 7 and the first horizontal slip module repeat no more at this.
Like Fig. 2, Fig. 6 and shown in Figure 7; The described first vertical sliding mould piece 4 comprises: Power Component 401, flange apparatus 402, slide block 403, lead chain 404, sliding rail 405 and radome fairing 406; Wherein: Power Component 401 links to each other with sliding rail 405 through flange apparatus 402, and its turning axle is connected to slide block 403 through leading chain 404, and slide block 403 is slidably supported on the sliding rail 405; And with first end prosthese module 2 in adjustment assembly 206 Joints; Sliding rail 405 perpendicular to the towing basin pond at the bottom of and vertical with first stuck-module 6, its upper end be fixedly connected with first stuck-module 6, the lower end freedom is unsettled; The both sides of sliding rail 405 are equipped with radome fairing 406.4 one-tenth mirror image of the described second vertical sliding mould piece 5 and the first vertical sliding mould piece repeat no more at this.
Shown in figure 10; Described Measurement and analysis control module 8 comprises: data acquisition unit 801, motion controller 802 and display 803; Wherein: on the input end of data acquisition unit 801 with state first and second end prosthese module 2,3 in two three component appearance 202 be connected, its output terminal is connected with display 803; Motion controller 802 has two output ports; Quadruplet Power Component 601,401 in motion control output port and the above-mentioned first horizontal slip module 6, the second horizontal slip module 7, the first vertical sliding mould piece 4, second sliding block 5 is connected, and the image display port is connected with display 803.
In the present embodiment,, the desirable 250mm of deep-sea riser model 101 diameters, the desirable 3m of length, its slenderness ratio has reached 1/12, and in the proper motion velocity range of trailer 9, operating condition of test can reach real Reynolds number 10
6Scope has effectively been avoided scale effect.
Principle of work:
During test; Send movement instruction by the motion controller in the Measurement and analysis control module 8 802 to Power Component 601,401 and trailer 9: trailer 9 moves ahead with certain speed along continuous straight runs in towing basin; The acquisition relative velocity advances in hydrostatic; With the situation that simulation deep-sea riser model 101 is statically placed in the uniform incoming flow, trailer speed should cooperate the Reynolds number under the actual sea situation rationally to choose according to the size of deep-sea riser model 101; And Power Component 601,401 drive deep-sea standpipe modules 1 come flow path direction on sliding rail 605,405 to do double vibrations along downbeam with vertical with the amplitude set and frequency, with the situation of the two-freedom vibration of simulation local segmentation vortex-induced vibration.In the process of the test; Three component appearance 202 in first and second end prosthese module 2,3 measure deep-sea riser model 101 in experimentation stressed size; And numerical value is transferred to the data acquisition unit 801 in the Measurement and analysis control module 8, data acquisition unit 801 and then data transmission is shown as viewdata to display 803.Another effect of display 803 is exactly the steering order that shows that motion controller 802 sends.
This device adopts special end prosthetic appliance; First and second end prosthese module 2,3 wherein is fixed on the slide block 403; Separate with riser model 101; Therefore riser model 101 two ends directly are fixed on the slide block 403 through three component appearance 202, and the data that measure of three component appearance 202 are power actual suffered on the riser model 101, and first and second end prosthese module 2,3 has played the effect of making the simulation flow field; But measurement mechanism is not directly exerted an influence, can effectively solve the problem that boundary effect appears in experiment neutral tube model 101 both sides.Deep-sea riser model 101 diameters that the present invention adopts can reach 250mm, and length can reach 3m, and slenderness ratio has reached 1/12, and so in normal trailer movement velocity scope, operating condition of test can reach real Reynolds number 10
6Scope has effectively been avoided scale effect.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. two-way vibration testing device that forces of deep-sea standpipe segmented model that evenly flows down; It is characterized in that; Said device mainly is made up of deep-sea standpipe module, first end prosthese module, the second end prosthese module, the first vertical sliding mould piece, the second vertical sliding mould piece, the first horizontal slip module, the second horizontal slip module and Measurement and analysis control module; Wherein: standpipe module two ends, deep-sea are connected with the second end prosthese module with first end prosthese module respectively; The first vertical sliding mould piece is connected with the first horizontal slip module with first end prosthese module respectively; The second vertical sliding mould piece is connected with the second horizontal slip module respectively at the second end prosthese module; The first horizontal slip module is fixedly connected with trailer bottom one end and is connected with the first vertical sliding mould piece; The second horizontal slip module is fixedly connected with the trailer bottom other end and is connected with the second vertical sliding mould piece, and the Measurement and analysis control module is arranged on the trailer, is connected with first end prosthese module, the second end prosthese module, the first vertical sliding mould piece, the second vertical sliding mould piece, the first horizontal slip module, the second horizontal slip module respectively.
2. a kind of two-way vibration testing device that forces of deep-sea standpipe segmented model that evenly flows down as claimed in claim 1; It is characterized in that; Described deep-sea standpipe module comprises: two standpipe fixture splices and deep-sea riser model; Wherein: riser model two ends, deep-sea are connected with two standpipe fixture splices respectively, and two standpipe fixture splices are connected with the second end prosthese module with first end prosthese module respectively.
3. a kind of two-way vibration testing device that forces of deep-sea standpipe segmented model that evenly flows down as claimed in claim 2; It is characterized in that described first end prosthese module comprises: prosthese urceolus, three component appearance, three component appearance fixed heads, voussoir, bearing, adjustment assembly, fixed head, backing plate, flow-stopping plate, wherein: prosthese urceolus and flow-stopping plate are fixed; Three component appearance respectively with deep-sea standpipe module in fixture splice link to each other with three component appearance fixed heads; Three component appearance fixed heads, one end is connected with three component appearance, and the other end and voussoir are affixed, and voussoir runs through flow-stopping plate; And it is inboard affixed with bearing and flow-stopping plate at flow-stopping plate; The voussoir of flow-stopping plate opposite side is connected with backing plate, and fixed head is affixed through backing plate and voussoir, and the adjustment assembly is affixed with the fixed head and the first vertical sliding mould piece respectively; Described the second end prosthese module and first end prosthese module are mirror image.
4. the two-way vibration testing device that forces of deep-sea standpipe segmented model under a kind of equal uniform flow as claimed in claim 3 is done; It is characterized in that the described first horizontal slip module comprises: Power Component, flange apparatus, slide block, lead chain, sliding rail, bracing frame, wherein: Power Component links to each other with sliding rail through flange apparatus; Its turning axle is connected to slide block through leading chain; Slide block is slidably supported on the sliding rail, and with the first vertical sliding mould piece Joint, bracing frame upper end is affixed with trailer; Lower end and sliding rail are affixed, and sliding rail is parallel at the bottom of the towing basin pond and is vertical with the first vertical sliding mould piece; The described second horizontal slip module becomes mirror image with the first horizontal slip module.
5. a kind of two-way vibration testing device that forces of deep-sea standpipe segmented model that evenly flows down as claimed in claim 4; It is characterized in that; The described first vertical sliding mould piece comprises: Power Component, flange apparatus, slide block, lead chain, sliding rail and radome fairing; Wherein: Power Component links to each other with sliding rail through flange apparatus, and its turning axle is connected to slide block through leading chain, and is sliding
Piece is slidably supported on the sliding rail, and with first end prosthese module Joint; Sliding rail perpendicular to the towing basin pond at the bottom of and vertical with the first horizontal slip module, its upper end be connected with the first horizontal slip module, the lower end freedom is unsettled; The both sides of sliding rail are equipped with radome fairing, and the described second vertical sliding mould piece becomes mirror image with the first vertical sliding mould piece.
6. a kind of two-way vibration testing device that forces of deep-sea standpipe segmented model that evenly flows down as claimed in claim 5; It is characterized in that; Described Measurement and analysis control module comprises: data acquisition unit, motion controller and display; Wherein: the input end of data acquisition unit is connected with two three component appearance in above-mentioned first and second end prosthese module, and its output terminal is connected with display; Motion controller has two output ports, and motion control output port and above-mentioned first and second vertical sliding mould piece are connected with quadruplet Power Component in first and second horizontal slip module, and the image display port is connected with display.
7. like arbitrary described a kind of two-way vibration testing device that forces of deep-sea standpipe segmented model that evenly flows down in the claim 2 to 6, it is characterized in that said deep-sea riser model diameter is 250mm, length is 3m.
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| CN102967427A (en) * | 2012-11-06 | 2013-03-13 | 上海交通大学 | Vortex-induced vibration testing device control system and control method based on force feedback principle |
| CN102967431A (en) * | 2012-11-06 | 2013-03-13 | 上海交通大学 | Testing device for simulating bidirectional self-induced vibration of deep-sea stand columns under uniform flow |
| CN102967428A (en) * | 2012-11-06 | 2013-03-13 | 上海交通大学 | Testing device for simulating self-oscillation under mutual interference of two stand column models under uniform flow |
| CN102967429A (en) * | 2012-11-06 | 2013-03-13 | 上海交通大学 | Device for simulating bidirectional self-oscillation under mutual interference of two stand column models under uniform flow |
| CN102980732A (en) * | 2012-11-06 | 2013-03-20 | 上海交通大学 | Testing apparatus of simulating lateral self-excited vibration of evenly flow-down deep-sea stand pipe |
| CN104406754A (en) * | 2014-11-25 | 2015-03-11 | 上海交通大学 | Dynamic response testing device for deep sea long and thin vertical tube under bidirectional forced oscillation state |
| CN104406753A (en) * | 2014-11-25 | 2015-03-11 | 上海交通大学 | Dynamic response testing device for deep-sea elongated vertical pipe under vertical forced oscillation |
| 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 |
| CN109883632A (en) * | 2019-02-02 | 2019-06-14 | 中国石油大学(北京) | Motion simulator and caliberating device |
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| CN102967429B (en) * | 2012-11-06 | 2015-07-08 | 上海交通大学 | Device for simulating bidirectional self-oscillation under mutual interference of two stand column models under uniform flow |
| CN102967428B (en) * | 2012-11-06 | 2015-07-08 | 上海交通大学 | Testing device for simulating self-oscillation under mutual interference of two stand column models under uniform flow |
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| CN102967427A (en) * | 2012-11-06 | 2013-03-13 | 上海交通大学 | Vortex-induced vibration testing device control system and control method based on force feedback principle |
| CN104406753A (en) * | 2014-11-25 | 2015-03-11 | 上海交通大学 | Dynamic response testing device for deep-sea elongated vertical pipe under vertical forced oscillation |
| CN104406754A (en) * | 2014-11-25 | 2015-03-11 | 上海交通大学 | Dynamic response testing device for deep sea long and thin vertical tube under bidirectional forced oscillation state |
| 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 |
| CN107478408B (en) * | 2017-08-16 | 2023-10-20 | 中国海洋石油集团有限公司 | Riser array dynamic response experimental device under simulated uniform flow effect |
| CN109883632A (en) * | 2019-02-02 | 2019-06-14 | 中国石油大学(北京) | Motion simulator and caliberating device |
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Application publication date: 20120111 |