An integrated test device for anti-dispersion and anti-scour of fluidized solidified soil for offshore wind turbines

Abstract

The present invention relates to the field of fluidized solidified soil testing devices, and specifically discloses an integrated anti-dispersion and anti-scour testing device for fluidized solidified soil for offshore wind turbines, comprising a water reservoir, an anti-dispersion testing mechanism, and an anti-scour testing mechanism. The anti-dispersion testing mechanism is a transparent rectangular trough, the water outlet at its tail end faces the inner cavity of the water reservoir, and the inner side of the water outlet has a concave test trough arranged on the bottom surface of the rectangular trough, and the head end of the rectangular trough forms a circular connection with the water reservoir through a pump body. The anti-scour testing mechanism includes: a tapered pipe, a horizontal flow pipe, a specimen pipe, a guide plate, a loading cylinder, a screw, a drive motor, and a rangefinder. The above-mentioned test device of the present invention can accurately simulate the high-speed water flow environment around the wind turbine pile, and simultaneously carry out anti-dispersion and anti-scour performance tests of fluidized solidified soil and offshore wind turbine coupling test devices, so as to provide more scientific and reliable technical support for the research and development and testing of fluidized solidified soil materials.

Description

Technical Field

[0001] The present invention relates to the field of fluidized solidified soil testing devices, and in particular to an integrated anti-dispersion and anti-scour testing device for fluidized solidified soil for offshore wind turbines. Background Art

[0002] The information disclosed in this background technology section is only intended to enhance understanding of the overall background of the invention and should not necessarily be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art.

[0003] Offshore wind power projects are developing rapidly, with cumulative installed capacity increasing annually. Offshore wind turbine foundations are constantly exposed to a complex wind-wave-current coupled marine environment. Localized scouring of the seabed around the piles is common, reducing the buried depth of the wind turbine foundations. This, in turn, reduces the bearing capacity of the wind turbine structure and increases the vibration frequency, seriously affecting the safe operation of offshore wind turbines. Previously, offshore wind farm foundation scouring control and protection methods mainly included riprap and sand blankets. In recent years, fluidized solidified soil has gradually become the preferred scouring control method for offshore wind farms due to its advantages such as good protection, low control costs, environmental protection, and strong engineering adaptability.

[0004] Because offshore wind turbine foundations need to have a long service life (25 years), withstand high-speed water flow around the piles (4m / s), and withstand large-volume scour (25m diameter, 7m depth), fluidized solidified soil is required to possess the properties of "high mobility → anti-dispersion → anti-scour." However, current methods for managing scour in fluidized solidified soil are still in their infancy, and both the research and development of solidified soil materials and on-site construction processes rely primarily on engineering experience. Although researchers have proposed some relevant testing equipment (such as patent documents with application numbers 201910596736.2 and 202310106585.4), there is still a lack of equipment that can quickly and accurately test the anti-dispersion and anti-scour properties of fluidized solidified soil simultaneously. As a result, the material research and development of fluidized solidified soil has always failed to meet engineering needs. Summary of the Invention

[0005] To address these issues, the present invention proposes a device that accurately simulates the high-speed water flow environment around wind turbine piles, while simultaneously testing the anti-dispersion and anti-scour properties of fluidized solidified soil and conducting offshore wind turbine coupling tests. This provides more scientific and reliable technical support for the research, development, and testing of fluidized solidified soil. Specifically, the technical solution of the present invention is as follows.

[0006] An integrated anti-dispersion and anti-scour test device for fluidized solidified soil of offshore wind turbines, comprising: a water reservoir, an anti-dispersion test mechanism, and an anti-scour test mechanism. The anti-dispersion test mechanism is a transparent rectangular trough, the water outlet at its tail end faces the inner cavity of the water reservoir, and the inner side of the water outlet has a concave test trough arranged on the bottom surface of the rectangular trough, and the head end of the rectangular trough forms a circulation connection with the water reservoir through a pump body. The anti-scour test mechanism comprises: a tapered pipe, a horizontal flow pipe, a test piece tube, a guide plate, a loading cylinder, a screw, a drive motor, and a rangefinder. The larger end of the tapered pipe forms a circulation connection with the water reservoir through the pump body, and the smaller end of the tapered pipe is connected to one end of the transparent horizontal flow pipe, and the other end of the horizontal flow pipe faces the inner cavity of the water reservoir. The test piece tube is vertically arranged on the bottom surface of the horizontal flow pipe and the two are connected, and the inner wall of the test piece tube has an internal thread. The guide plate is positioned below the specimen tube. The loading cylinder is vertically positioned above the guide plate and aligned with the specimen tube. The outer wall of the loading cylinder has external threads that mate with the internal threads. The upper end of the screw moves through the guide plate and connects to the center of the bottom surface of the loading cylinder. The drive motor engages with the screw via a vertically mounted worm gear to drive the screw in rotation and elevation. The rangefinder is positioned on the top surface of the horizontal flow tube and aligned with the specimen tube. It is connected to the controller of the drive motor.

[0007] Furthermore, the test mechanism formed by the specimen tube, the guide plate, the loading cylinder, the screw, the drive motor and the distance meter is divided into two groups, which are arranged in parallel at the lower part of the horizontal flow tube.

[0008] Furthermore, the anti-dispersion test mechanism also includes: a sample receiving tank body, a fan model, a cover body and an air blowing device. Wherein: the sample receiving tank body matches the test tank and can be accommodated therein. The fan model is used to be buried in the sample receiving tank body through the fluidized solidified soil to be tested. The cover body is a long arc-shaped plate, which slides over the upper end slot of the rectangular slot. The air blowing device is arranged at the tail end of the upper end slot, and the air outlet faces the port of the cover body, so as to blow air therein to drive the blades of the fan model to rotate, simulating the rotation scene of the offshore wind turbine under the sea breeze, and conducting a simulation test of the offshore wind turbine under the action of wind-flow coupling.

[0009] Furthermore, the anti-dispersion testing mechanism also includes a camera device, located above the test tank, for recording the dispersion of the fluidized solidified soil in moving water. Preferably, the camera device is connected to a display. More preferably, the display has a data storage function to store the data collected by the camera device.

[0010] Furthermore, a flow equalizing plate is provided on the water inlet side of the rectangular trough, and a plurality of openings are evenly distributed on the plate surface of the flow equalizing plate to convert the water flow into a planar water flow, thereby providing stable dynamic water conditions for the simulation test.

[0011] Furthermore, the anti-scour test mechanism also includes a lifting mechanism, comprising a frame, a handwheel, a lead screw, a connecting plate, a lifting rod, and a support plate. The frame is fixed above the horizontal flow tube, the handwheel is horizontally connected to the upper end of a vertically arranged lead screw, which is threadedly connected to the frame. The connecting plate is fixed to the lower end of the lead screw, the upper end of the lifting rod is connected to the connecting plate, and the lower end is connected to the support plate. The drive motor is mounted on the support plate, and the guide plate is fixedly connected to the lifting rod.

[0012] Furthermore, the head end of the rectangular trough and the larger end of the reducer are connected to the water outlet of the pump body through a water pipe, and a control valve is provided on the water pipe. Optionally, a flow meter is also provided on the water pipe corresponding to the reducer to control the water flow rate.

[0013] Furthermore, the anti-scour test mechanism also includes a rigid retaining ring and a flexible sealing sleeve. The retaining ring is fixed to the inner sidewall of the test tube and positioned above the internally threaded area. The sealing sleeve comprises a corrugated sleeve and a protruding ring integrally connected to its top end, with the outer diameter of the protruding ring being between the outer and inner diameters of the retaining ring. Preferably, the lower end of the corrugated sleeve abuts against the upper end surface of the loading cylinder.

[0014] Compared with the prior art, the present invention has at least the following beneficial technical effects:

[0015] (1) The test device of the present invention can simultaneously conduct anti-dispersion and anti-scour tests of fluidized solidified soil under visual conditions through the anti-dispersion test mechanism and the anti-scour test mechanism, and can accurately simulate the high-speed water flow environment around the wind turbine pile. In addition, the test device of the present invention can realize the simulation test of offshore wind turbines under the action of wind-flow coupling by cooperating with the anti-dispersion test mechanism through the wind-flow coupling device formed by the sample trough, wind turbine model, cover body and blowing device, thereby providing more scientific and reliable technical support for the research and development and testing of fluidized solidified soil materials.

[0016] (2) The anti-scour test mechanism of the present invention further improves the accuracy of the anti-scour test by means of a test tube, a guide plate, a loading cylinder, a screw, a drive motor, and a distance meter, thereby reducing the test error caused by manual operation. This is because: on the one hand, the drive motor drives the screw, which enables the test piece made of fluidized solidified soil placed in the loading cylinder to be infinitely advanced into the horizontal flow tube by means of the test tube, thereby ensuring that after the top of the test piece is damaged by water scouring, the test piece is accurately restored to the point where its top surface is flush with the bottom upper surface of the horizontal flow tube through the feedback of the distance meter. At the same time, since the test piece tube has an internal thread that matches the external thread of the loading cylinder, the loading cylinder can be screwed into the test piece tube by the drive motor during the test, so that the two are threadedly connected, thereby achieving the goal of infinitely advancing the test piece upward while maintaining a dynamic sealing connection between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0018] Figure 1 Schematic diagram of the structure of the fluidized solidified soil anti-dispersion and anti-scour integrated test device in the following embodiments.

[0019] Figure 2 Schematic diagram of the structure of the anti-dispersion test mechanism in the following examples.

[0020] Figure 3 Schematic diagram of the structure of the anti-scour test mechanism in the following embodiments.

[0021] Figure 4 Schematic diagram of the structure of the sample tank and fan model in the following embodiments.

[0022] Figure 5 Schematic diagram of the structure of the limiting ring and the sealing sleeve in the following embodiments.

[0023] The marks in the above figure represent: 1-water reservoir, 2-anti-dispersion test mechanism, 3-anti-scour test mechanism, 4-pump body, 5-water supply pipeline, 6-control valve, 7-flow meter, 201-water outlet, 202-test tank, 203-sample tank, 204-fan model, 205-cover, 206-blowing device, 207-flow equalizing plate, 301-converging pipe, 302-horizontal flow pipe, 303-test piece tube, 304-guide plate, 305-loading cylinder, 306-screw, 307-drive motor, 308-distance meter, 309-frame, 310-handwheel, 311-screw, 312-connecting plate, 313-lifting rod, 314-support plate, 315-limiting ring, 316-corrugated sleeve, 317-protruding ring. DETAILED DESCRIPTION

[0024] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.

[0025] It should be noted that the terms used herein are intended only to describe specific embodiments and are not intended to limit the exemplary embodiments of the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] For ease of description, the words "up," "down," "left," and "right" appearing in this disclosure merely indicate the same orientation as in the accompanying drawings and do not limit the structure. These are intended solely to facilitate and simplify the description of the disclosure and do not indicate or imply that the device or component referred to requires a specific orientation, construction, or operation. Therefore, they should not be construed as limiting the disclosure. The present disclosure further describes an integrated anti-dispersion and anti-scour test device for fluidized solidified soil used in offshore wind turbines, in conjunction with the accompanying drawings and specific embodiments.

[0027] refer to Figure 1 、 Figure 2 and Figure 3 , an example of an integrated anti-dispersion and anti-scour test device for fluidized solidified soil of an offshore wind turbine is provided, comprising: a water reservoir 1, an anti-dispersion test mechanism 2, and an anti-scour test mechanism 3. Specifically, the water reservoir 1 is a box with an open top, which is mainly used for storing and circulating test water. The anti-dispersion test mechanism 2 is a rectangular trough made of a transparent material (such as organic glass, etc.) to facilitate testing under visual conditions. The rectangular trough is arranged above the water reservoir 1, and the tail end of the rectangular trough has a downwardly arranged water outlet 201, which extends into the inner cavity of the water reservoir 1 so as to discharge the tested water into the water reservoir 1 for recycling. A concave square test trough 202 is provided on the inner side of the water outlet 201, which is located on the bottom surface of the rectangular trough. The head end of the rectangular trough is connected to the water reservoir 1 in a circulation manner through a pump body 4 and a water pipe 5, so as to perform a circulation test using the water stored in the water reservoir 1. The water delivery pipeline 5 is provided with a control valve 6 for controlling the on-off of the pipeline.

[0028] The anti-scour test mechanism 3 is arranged above the water reservoir 1 in parallel with the rectangular trough. The anti-scour test mechanism 3 includes a tapered pipe 301, a horizontal flow pipe 302, a specimen tube 303, a guide plate 304, a loading cylinder 305, a screw 306, a drive motor 307, and a rangefinder 308. The tapered pipe 301 is a square tube with a port size that gradually decreases from one end to the other. Its larger end forms a circular connection with the water reservoir 1 via the pump body 4 and a water supply pipe 5, which is equipped with a control valve 6. The pump body 4 pumps water from the water reservoir 1 through two water supply pipes 5 into the anti-dispersion test mechanism 2 and the tapered pipe 301, respectively, for conducting anti-dispersion and anti-scour tests, respectively. The tapered pipe 301, by virtue of its gradual contraction, helps to achieve a more stable high-speed flow field. The horizontal flow tube 302 is a horizontally arranged square tube, one end of which is sealed to the smaller end of the reducer 301 via a flange. The horizontal flow tube 302 is made of a transparent material (such as plexiglass) to facilitate visual testing. The other end of the horizontal flow tube 302 has a downwardly curved drain port extending into the interior of the water reservoir 1, allowing the post-test water to be discharged into the water reservoir 1 for recycling.

[0029] The test tube 303 is vertically fixed to the bottom surface of the horizontal flow tube 302, and the two are connected. The inner wall of the lower end of the test tube 303 has internal threads. The guide plate 304 is horizontally fixed below the test tube 303. The loading cylinder 305 has a closed lower end and an open upper end. It is vertically arranged above the guide plate 304 and aligned with the test tube 303 above. The outer wall of the loading cylinder 305 has external threads that match the internal threads, allowing the two to be threaded together.

[0030] The screw 306 is vertically mounted, with its upper end slidingly passing through a through-hole in the guide plate 304 and then fixedly connected to the center of the bottom surface of the loading cylinder 305. The drive motor 307 is vertically mounted below the screw 306. A worm is connected to the motor shaft of the drive motor 307, meshing with the screw 306 to drive the screw 306 in rotation and elevation. The rangefinder 308 is sealed within a mounting hole in the top surface of the horizontal flow tube 302 and aligned with the specimen tube 303 below it. The rangefinder 308 is connected to the controller of the drive motor 307 and can be a laser rangefinder, for example.

[0031] (1) When the anti-dispersion test of fluidized solidified soil is conducted using the above-mentioned test device, the fluidized solidified soil to be tested is first pumped and blown into the test tank 202 using a slurry pump (the mass of the fluidized solidified soil at this time is referred to as a), and then the control valve 6 on the corresponding water supply pipe 5 is opened, and the pump body 4 is opened, and a stopwatch is started to record the test time. The pump body 4 pumps the water drawn from the water reservoir 1 into the rectangular tank of the anti-dispersion test mechanism 2 through the water supply pipe 5, thereby disturbing and dispersing the fluidized solidified soil in the test tank 202. During the test, the state of the fluidized solidified soil is closely observed, and the dispersion of the fluidized solidified soil in the moving water can also be recorded using a camera device installed above the test tank 202. After the test is completed, the remaining fluidized solidified soil in the test tank 202 is weighed (recorded as b), and the solidified soil dispersion rate = ((ab) / a) × 100% is calculated to evaluate the anti-dispersion performance of the fluidized solidified soil. The properties and changes of the fluidized solidified soil under different water flow conditions can also be compared by changing the water flow rate to determine the critical water flow condition for anti-dispersion of the fluidized solidified soil.

[0032] (2) When the above-mentioned test device is used to conduct the anti-scouring test of fluidized solidified soil, the fluidized solidified soil to be tested is first mixed with water in a set ratio and then poured into a mold. After solidification, a cylindrical standard specimen is obtained. The height of the specimen is then measured and weighed. The specimen is then placed in the loading cylinder 305. At this time, the lower end of the specimen is located in the loading cylinder 305, and the rest of the specimen is located outside the loading cylinder 305. Then the drive motor 307 is started to drive the screw 306 to rotate, thereby causing the loading cylinder 305 to rise and rotate, and then enter the specimen tube 303. The two are then threaded together. When the top surface of the specimen is flush with the bottom upper surface of the horizontal flow tube 302, the rangefinder 308 feeds back the information of stopping operation to the controller of the drive motor 307. Then, the control valve 6 and the pump body 4 are opened for testing, and the stopwatch is started to record the test time. After passing through the convergent tube 301, the water flows into the horizontal flow tube 302, scouring the top surface of the specimen therein. During the test, as the top surface of the specimen is continuously lost under the scouring action of the water flow, its height gradually decreases. At this point, the rangefinder 308 detects the increasing distance between the top surface of the specimen and the top surface of the horizontal flow tube 302. This information then feeds back to the controller of the drive motor 307, initiating the operation and raising the specimen until its top surface is flush with the bottom upper surface of the horizontal flow tube 302, thereby ensuring the accuracy of the test. After the test, the specimen is removed and its height and weight are measured. These are then compared with the height and weight of the specimen before the scouring test to determine the scouring rate of the fluidized solidified soil. This calculation formula is: Scouring rate = (scouring mass loss / (scouring time × scouring area)) × 100%. Similarly, by varying the water flow rate, the properties and changes of fluidized solidified soil under different water flow conditions can be compared.

[0033] The test apparatus of this embodiment enables simultaneous, visually visualized anti-dispersion and anti-scour testing of fluidized solidified soil using the anti-dispersion testing mechanism 2 and the anti-scour testing mechanism 3. This accurately simulates the high-speed water flow environment surrounding wind turbine piles, making the testing efficient and convenient while also avoiding interference. This provides more scientific and reliable technical support for the research, development, and testing of fluidized solidified soil materials. Furthermore, this embodiment utilizes the specialized testing mechanism comprised of the specimen tube 303, guide plate 304, loading cylinder 305, screw 306, drive motor 307, and rangefinder 308 to achieve precise anti-scour testing, reducing test errors introduced by manual operation. This is because, firstly, the drive motor 307 drives the screw 306, enabling the specimen placed in the loading cylinder 305 to continuously propel itself through the specimen tube 303 and into the horizontal flow tube 302. This ensures that, after the top of the specimen is worn away by water scouring, feedback from the rangefinder accurately propels the specimen until its top surface is flush with the bottom upper surface of the horizontal flow tube 302. In particular, when two sets of parallel tests are required, the two test specimens can be kept at the same height using the two test mechanisms. This prevents the two specimens from dropping at different heights due to their different scour resistance (made from two different types of fluidized solidified soils), which in turn changes the water flow characteristics around the specimens, causing the two specimens to be exposed to different water flow environments and leading to inaccurate test results. Furthermore, because the inner sidewall of the lower port of the specimen tube 303 has internal threads that match the external threads on the outer sidewall of the loading cylinder 305, the loading cylinder 305 can be screwed into the specimen tube 303 by the drive motor 307 during testing, threading the two together. This allows the specimen to be continuously propelled upward while maintaining a dynamic, sealed connection, preventing water leakage from the horizontal flow tube 302.

[0034] In another embodiment, the screw 306 of the test device in the above embodiment is threadedly connected to the guide plate 304, so that while the guide plate 304 is used for guidance, the guide plate 304 can also be used to lift the screw 306 and the test tube 303 at its top to improve its stability.

[0035] In another embodiment, reference Figure 2 and Figure 4, the anti-dispersion test mechanism 2 of the test device of the above embodiment also includes: a sample receiving tank body 203, a fan model 204, a cover body 205 and a blowing device 206. Specifically: the sample receiving tank body 203 matches the test tank 202 and can be accommodated therein. The sample receiving tank body 203 can also be used for the anti-dispersion test of the above-mentioned fluidized solidified soil. During the test, the sample receiving tank body 203 is first placed in the test tank 202, and then the fluidized solidified soil to be tested is pumped and blown into the sample receiving tank body 203 by a mud pump for testing. The sample receiving tank body 203 is convenient for taking out and weighing the remaining fluidized solidified soil after the test is completed, and calculating the dispersion rate of the solidified soil. Reference Figure 2 The cover 205 is a long arc-shaped plate, which slides over the upper notch of the rectangular groove so that when the sample receiving groove 203 needs to be placed in or taken out of the sample receiving groove 203, the upper notch of the rectangular groove can be easily opened by pushing the cover 205 to one side. During testing, the cover 205 can be moved back to its original position to form a wind-flow coupling mechanism in conjunction with the blowing device 206 to conduct a simulated test of an offshore wind turbine under wind-flow coupling. The blowing device 206 is arranged at the tail end of the upper notch of the rectangular groove, and the air outlet extends into one end port of the cover 205 so as to blow air therein to drive the blades of the wind turbine model 204 to rotate, simulating the rotation scene of an offshore wind turbine under the sea breeze.

[0036] During testing, the lower end of the fan model 204 is embedded in the sample-bearing trough 203, using the fluidized solidified soil to simulate a seabed foundation. After the blower 206 is activated, the blades of the fan model 204 rotate. Simultaneously, the control valve 6 and pump 4 are activated to conduct a test of the anti-dispersion properties of the fluidized solidified soil under wind-flow coupling. By varying the airflow rate of the blower 206, tests can be performed under various conditions, capturing response data of the fan model 204 under wind-flow coupling, such as displacement, stress, vibration, and force.

[0037] In another embodiment, reference Figure 2 The rectangular trough of the test apparatus in the above embodiment is equipped with a flow equalizer plate 207 on the water inlet side. The plate surface of the flow equalizer plate 207 is uniformly distributed with a number of openings. Because water must be driven by the pump body 4 before flowing to the flow equalizer plate 207, and because of interference from the pipeline, the water flow entering the rectangular trough fluctuates. The flow equalizer plate 207 converts the dynamic water flow from the existing flow to a planar flow, thereby providing more stable dynamic water conditions for the simulation test.

[0038] In another embodiment, the camera device of the test device of the above embodiment is connected to a display. The display is preferably a display with data storage function, so as to store the data collected by the camera device for further analysis after the test.

[0039] In another embodiment, reference Figure 3 The anti-scour test mechanism 3 of the test device of the above embodiment also has a lifting mechanism, including: a frame 309, a handwheel 310, a screw 311, a connecting plate 312, a lifting rod 313, and a support plate 314. Specifically, the frame 309 is vertically arranged above the horizontal flow tube 302, and the lower end of the frame 309 is fixed on both sides of the horizontal flow tube 302. The handwheel 310 is horizontally fixedly connected to the upper end of the vertically arranged screw 311, and the screw 311 is threadedly connected to the upper frame of the frame 309, so that the screw 311 is driven to rotate by the handwheel 310, causing the screw 311 to be raised and lowered. The connecting plate 312 is horizontally disposed, with its center portion fixedly connected to the lower end of the lead screw 311. Two vertically disposed lifting rods 313 are symmetrically located on either side of the horizontal flow tube 302. The upper ends of the lifting rods 313 are connected to the connecting plate 312, while the lower ends of the lifting rods 313 are fixedly connected to the upper surface of the horizontally disposed support plate 314. The drive motor 307 is fixed to the lower surface of the support plate 314, and the motor shaft of the drive motor 307 moves through a through hole in the support plate 314 and engages with the screw 306 via the worm gear. The guide plate 304 is fixedly connected to the lifting rods 313. During testing, the loading cylinder 305 and the specimen therein can be first raised to a certain height using the lifting mechanism described in this embodiment. The drive motor 307 is then activated for more precise adjustment until the top surface of the specimen is flush with the bottom upper surface of the horizontal flow tube 302.

[0040] In another embodiment, reference Figure 3 The water delivery pipe 5 corresponding to the reducer 301 of the test device in the above embodiment is also provided with a flow meter 7 to control the water delivery flow rate and conduct tests under different conditions.

[0041] In another embodiment, reference Figure 5The anti-scour test mechanism 3 of the above embodiment also includes a rigid limiting ring 315 and a flexible sealing sleeve. The limiting ring 315 is horizontally fixedly connected to the inner side wall of the test tube 303 and is located above the internal thread area. The sealing sleeve includes a corrugated sleeve 316 and a protruding ring body 317 integrally connected to its top end, and the outer diameter of the protruding ring body 317 is between the outer diameter and inner diameter of the limiting ring 315. During the test, the corrugated sleeve 316 and the protruding ring body 317 are tightly fitted on the test piece. As the test piece rises to the point where the protruding ring body 317 presses against the bottom surface of the limiting ring 315, the corrugated sleeve 316 cannot continue to rise. Instead, as the test piece continues to rise, the corrugated sleeve 316 is compressed and stored. Under the action of this stored force, the protruding ring body 317 and the limiting ring 315 are pressed more tightly, thereby further improving the sealing performance and preventing water leakage. The sealing sleeve can be made of rubber or flexible plastic and is reusable. In a further embodiment, the lower end of the corrugated sleeve 316 abuts against the upper end surface of the loading cylinder 305, thereby strengthening the above-mentioned force storage in cooperation with the limiting ring 315, which helps to improve the sealing effect.

[0042] Finally, it should be noted that any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention. Although the above description of the specific embodiments of the present invention is combined with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations made by those skilled in the art on the basis of the technical solution of the present invention without expending creative effort are still within the scope of protection of the present invention.

Claims

1. An integrated test device for anti-dispersion and anti-scour of fluidized solidified soil for offshore wind turbines, characterized in that: include: Water storage tanks, anti-dispersion test facilities and anti-scour test facilities; including: The anti-dispersion test mechanism is a transparent rectangular trough, the water outlet at its tail end faces the inner cavity of the water reservoir, and the inner side of the water outlet has a concave test trough arranged on the bottom surface of the rectangular trough, and the head end of the rectangular trough is connected to the water reservoir in a circulation manner through a pump body; The anti-scour test mechanism includes: a reducer, a horizontal flow tube, a specimen tube, a guide plate, a loading cylinder, a screw, a drive motor, and a distance meter; the larger end of the reducer is connected to the water reservoir through the pump body to form a circulation connection, the smaller end of the reducer is connected to one end of the transparent horizontal flow tube, and the other end of the horizontal flow tube faces the inner cavity of the water reservoir; The test tube is vertically arranged on the bottom surface of the horizontal flow tube and the two are connected, and the inner wall of the test tube has an internal thread; the guide plate is arranged below the test tube, and the loading cylinder is vertically arranged above the guide plate and aligned with the test tube, and the outer wall of the loading cylinder has an external thread matching the internal thread; The upper end of the screw moves through the guide plate and is connected to the center of the bottom surface of the loading cylinder; the drive motor is engaged with the screw through a vertically arranged worm; the rangefinder is arranged on the top surface of the horizontal flow tube and is aligned with the specimen tube, and is connected to the controller of the drive motor; The anti-dispersion test mechanism further includes: a sample receiving tank, a fan model, a cover, and an air blowing device; wherein: the sample receiving tank matches the test tank and can be accommodated therein; the fan model is used to be buried in the sample receiving tank through the fluidized solidified soil to be tested; the cover is a long arc-shaped plate that slides over the upper end notch of the rectangular tank; the air blowing device is arranged at the rear end of the upper end notch, with the air outlet facing the end of the cover; The anti-scour test mechanism also has a lifting mechanism, including: a frame, a handwheel, a screw, a connecting plate, a lifting rod and a support plate; wherein: the frame is fixed above the horizontal flow tube, the handwheel is horizontally connected to the upper end of the vertically arranged screw, and the screw is threadedly connected to the frame; the connecting plate is fixed to the lower end of the screw, the upper end of the lifting rod is connected to the connecting plate, and the lower end is connected to the support plate; the drive motor is arranged on the support plate, and the guide plate is fixedly connected to the lifting rod.

2. The integrated anti-dispersion and anti-scour test device for fluidized solidified soil of offshore wind turbines according to claim 1 is characterized in that: The test mechanism formed by the test piece tube, the guide plate, the loading cylinder, the screw, the driving motor and the distance meter is divided into two groups, which are arranged in parallel at the lower part of the horizontal flow tube.

3. The integrated anti-dispersion and anti-scour test device for fluidized solidified soil of offshore wind turbines according to claim 1 is characterized in that: The anti-dispersion test mechanism further includes a camera device, which is arranged above the test tank.

4. The integrated anti-dispersion and anti-scour test device for fluidized solidified soil of offshore wind turbines according to claim 3 is characterized in that: The camera device is connected to the display.

5. The integrated anti-dispersion and anti-scour test device for fluidized solidified soil of offshore wind turbines according to claim 4 is characterized in that: The display has a data storage function.

6. The integrated anti-dispersion and anti-scour test device for fluidized solidified soil of offshore wind turbines according to claim 1 is characterized in that: A flow balancing plate is provided on the water inlet side of the rectangular parallelepiped trough, and a plurality of openings are evenly distributed on the plate surface of the flow balancing plate.

7. The integrated anti-dispersion and anti-scour test device for fluidized solidified soil of offshore wind turbines according to any one of claims 1 to 6, characterized in that: The anti-scour test mechanism also includes a rigid limiting ring and a flexible sealing sleeve; wherein: the limiting ring is fixed on the inner wall of the test tube and is located above the internal thread area; the sealing sleeve includes a corrugated sleeve and a protruding ring body integrally connected to its top end, and the outer diameter of the protruding ring body is between the outer diameter and inner diameter of the limiting ring.

8. The integrated anti-dispersion and anti-scour test device for fluidized solidified soil of offshore wind turbines according to claim 7 is characterized in that: The lower end of the corrugated sleeve abuts against the upper port end surface of the loading cylinder.

9. The integrated anti-dispersion and anti-scour test device for fluidized solidified soil of offshore wind turbines according to any one of claims 1 to 6, characterized in that: The head end of the rectangular trough and the larger end of the tapered pipe are connected to the water outlet of the pump body through a water delivery pipeline, and a control valve is provided on the water delivery pipeline.

10. The integrated anti-dispersion and anti-scour test device for fluidized solidified soil of offshore wind turbines according to any one of claims 1 to 6, characterized in that: A flow meter is also provided on the water delivery pipeline corresponding to the reducer.

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