[0025] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0026] Such as figure 1 , figure 2 with image 3 As shown, the device includes: a deep sea riser module 1, a first end prosthesis module 2, a second end prosthesis module 3, a first vertical sliding module 4, a second vertical sliding module 5, and a first horizontal sliding module 6. The second horizontal sliding module 7 and the measurement analysis control module 8, in which: the two ends of the deep sea riser module 1 are respectively connected to the first end prosthesis module 2 and the second end prosthesis module 3, the first vertical sliding module 4 are respectively connected to the first end prosthesis module 2 and the first horizontal sliding module 6, the second vertical sliding module 5 is respectively connected to the second end prosthesis module 3 and the second horizontal sliding module 7, the first horizontal sliding module 6 is fixedly connected to the bottom of one end of the trailer 9 and connected to the first vertical sliding module 4, the second horizontal sliding module 7 is fixedly connected to the bottom of the other end of the trailer 9 and connected to the second vertical sliding module 5, and the deep sea riser module 1 is connected to the first vertical sliding module 4. The vertical sliding module 4 and the second vertical sliding module 5 are installed at a certain angle. The measurement analysis control module 8 is arranged on the trailer 9 and is connected to the first end prosthesis module 2, the second end prosthesis module 3, and the second end prosthesis module respectively. A horizontal sliding module 6, a second horizontal sliding module 7, a first vertical sliding module 4, and a second vertical sliding module 5 are connected. The trailer 9 moves horizontally in the towing pool at a certain speed.
[0027] Such as figure 2 with Figure 4 As shown, the deep-sea riser module 1 includes: two riser fixing joints 102, 103 and a deep-sea riser model 101, wherein the two ends of the deep-sea riser model 101 are respectively connected to the two riser fixing joints 102, 103 , The two riser fixing joints 102 and 103 are connected to the first end prosthesis module 2 and the second end prosthesis module 3 respectively. The riser fixing joints 102 and 103 are fixed connections to prevent the riser model from loosening during the experiment.
[0028] Such as figure 2 with Figure 5 As shown, the first end prosthesis module 2 includes: an external prosthesis tube 201, a three-component force meter 202, a three-component force meter fixing plate 203, a wedge 204, a support 205, an adjustment component 206, and a fixing plate 207, backing plate 208, baffle 209, of which: the prosthesis outer tube 201 is fixed to the baffle 209, and the three-component force meter 202 is fixed to the fixed joints 102, 103 and the three-component force meter in the deep sea riser module 1 respectively The plate 203 is connected. One end of the three-component force meter fixing plate 203 is connected with the three-component force meter 202, and the other end is fixed to the wedge block 204. The wedge block 204 penetrates the baffle 209 and is connected to the support 205 on the inner side of the baffle 209. The baffle 209 is fixed, the wedge 204 on the other side of the baffle 209 is connected to the backing plate 208, the fixed plate 207 is fixed to the wedge 204 through the backing plate 208, and the adjustment assembly 206 is perpendicular to the fixed plate 207 and the first The sliding module 4 is fixed, the axis line of the prosthesis body cylinder 201 and the normal line of the baffle plate 209 plane form a certain angle, and the center line of the three-component force meter fixing plate 203 and the center line of the three-component force meter 202 are both with the prosthesis body. The axis of the cylinder 201 coincides, and the three-component force meter 202 is vertically fixed to the oblique side of the wedge 204. The second end prosthesis module 3 and the first end prosthesis module 2 are mirror-symmetrical structures, which will not be repeated here.
[0029] Such as figure 2 , Figure 8 with Picture 9 As shown, the first horizontal sliding module 6 includes: a power assembly 601, a flange device 602, a slider 603, a guide chain 604, a sliding track 605, and a support frame 606, wherein the power assembly 601 is connected to the The sliding rail 605 is connected, and its rotating shaft is connected to the sliding block 603 through a guide chain 604. The sliding block 603 is slidably supported on the sliding rail 605 and fixedly connected to the first vertical sliding module 4, and the upper end of the supporting frame 606 is fixedly connected to the trailer 9 , The lower end is fixed to the sliding rail 605, the sliding rail 605 is parallel to the bottom of the towing pool and perpendicular to the first vertical sliding module 4; the second horizontal sliding module 7 and the first horizontal sliding module 6 are in mirror symmetry structure, This will not be repeated here.
[0030] Such as figure 2 , Image 6 with Figure 7 As shown, the first vertical sliding module 4 includes: a power assembly 401, a flange device 402, a sliding block 403, a guide chain 404, a sliding track 405 and a fairing 406, wherein the power assembly 401 is connected to the flange device 402 The sliding track 405 is connected, and its rotation axis is connected to the sliding block 403 through a guide chain 404. The sliding block 403 is slidably supported on the sliding track 405 and fixedly connected with the adjustment component 206 in the first end prosthesis module 2. The sliding track 405 is perpendicular to the bottom of the towing pool and perpendicular to the first fixed module 6, its upper end is fixedly connected with the first fixed module 6, and the lower end is freely suspended; a fairing 406 is installed on both sides of the sliding rail 405. The second vertical sliding module 5 and the first vertical sliding module 4 are in a mirror-symmetrical structure, which will not be repeated here.
[0031] Such as Picture 10 As shown, the measurement analysis control module 8 includes: a data collector 801, a motion controller 802, and a display 803. The input end of the data collector 801 is connected to the first and second end prosthesis modules 2, 3 above. The two three-component force meters 202 are connected, and the output end is connected to the display 803; the motion controller 802 has two output ports, and the motion control output port is connected to the first horizontal sliding module 6, the second horizontal sliding module 7, The four sets of power components 601 and 401 in the first vertical sliding module 4 and the second sliding module 5 are connected, and the image display port is connected with the display 803.
[0032] In this embodiment, the diameter of the deep-sea riser model 101 can be 250mm, the length can be 3m, and its slenderness ratio reaches 1/12. Within the normal speed range of the trailer 9, the test conditions can reach the real Reynolds number 10. 6 Range, effectively avoiding the scale effect.
[0033] working principle:
[0034] During the test, the motion controller 802 in the measurement analysis control module 8 sends motion instructions to the power components 601, 401 and the trailer 9: the trailer 9 moves in the towing pool at a certain speed in a horizontal direction, and moves forward in still water to obtain a relative speed To simulate the situation that the deep-sea riser model 101 is statically placed in an oblique and uniform flow, the trailer speed should be reasonably selected according to the size of the deep-sea riser model 101 and the Reynolds number under actual sea conditions; and the power components 601 and 401 drive the deep-sea stand The tube module 1 reciprocates on the sliding rails 605 and 405 along the forward flow direction and the vertical incoming flow direction with the set amplitude and frequency to simulate the two-degree-of-freedom vibration of the local segmented vortex-induced vibration. During the experiment, the three-component force meter 202 in the first and second end prosthesis modules 2, 3 measured the force of the deep sea riser model 101 during the experiment, and transmitted the value to the measurement analysis control module The data collector 801 in 8 and the data collector 801 then transmit the data to the display 803 to display the data as visual data. Another function of the display 803 is to display the control commands issued by the motion controller 802.
[0035] This device uses a special end prosthesis device, in which the first and second end prosthesis modules 2, 3 are fixed on the slider 403, and are independent of the riser model 101, and the two ends of the riser model 101 pass three-component force The meter 202 is directly fixed on the sliding block 403, so the data measured by the three-component force meter 202 is the actual force on the riser model 101, and the first and second end prosthesis modules 2, 3 play a role in manufacturing simulation flow The role of the field, but does not directly affect the measuring device, can effectively solve the problem of boundary effects on both sides of the riser model 101 in the experiment. The deep-sea riser model 101 used in the present invention has a diameter of up to 250mm, a length of up to 3m, and a slenderness ratio of 1/12. In this way, the test conditions can reach the real Reynolds number 10 within the range of normal trailer motion speed. 6 Range, effectively avoiding the scale effect. The invention adopts two sets of power devices, which can carry out forced vibrations of different amplitudes and frequencies in two directions, and can simulate special sea conditions where the incoming flow is not perpendicular to the riser, and simulate vortex-induced vibration more realistically to obtain a more realistic test results.
[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection of the present invention. Within range.
