A stainless steel pipe water entry simulation test device special for offshore wind power floating platform and a use method thereof

Abstract

The present application relates to the technical field of ship offshore test, particularly relates to a kind of offshore wind power floating platform special-purpose stainless steel pipe water entry simulation test device and use method. Including the steel pipe limiting unit for fixing steel pipe, the steel pipe limiting unit is provided with the outer measuring unit for applying pressure to steel pipe from outside directly above, the steel pipe limiting unit and outer measuring unit main body are all fan-shaped structure. The present application is extended to the inside of steel pipe by electric push rod driven inner measuring head body, then start micro servo cylinder to push the pestle head to extend to extension way, and sliding fit occurs with each group of inclined plane, so that each group of test block is pushed out side export, and simultaneously extruding to each orientation of steel pipe inner wall, then control micro servo cylinder reset, so as to realize the anti-pressure test to steel pipe inner wall. Steel pipe inside and outside can be tested, and the functionality of the device is enriched.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of ship offshore test, and particularly relates to a special stainless steel pipe water entry simulation test device for offshore wind power floating platform and a use method. BACKGROUND

[0002] The floating platform refers to a platform installed on the sea surface, which is widely used in the field of wind power generation, etc. In order to resist the salt and alkali erosion in seawater, the floating platform and the wind power generation equipment thereon usually adopt stainless steel as the raw material, and especially the transportation pipeline for transporting fluid or gas needs the stainless steel pipe with pressure resistance and corrosion resistance. However, the sea is usually large in wind and wave, and in order to ensure the safety, the simulation test of the stainless steel pipe against the wind and wave after water entry is usually needed.

[0003] Through retrieval, the patent document with the publication number CN120651483A and the publication date of September 16, 2025, named a sailing body cross-medium water entry test device and test method under wave conditions, is cited, which comprises an experimental water tank, an adjusting module and a launching module. The experimental water tank is provided with a wave maker for forming a wave liquid surface in the experimental water tank. The launching module is arranged on the launching platform of the adjusting module, wherein the inclination angle of the launching platform can be adjusted, and different launching angles can be adjusted according to the requirements. The launching module comprises a launcher and a driving source, the launcher is arranged on the launching platform, and the driving source is connected to one end of the launcher. The other end of the launcher is provided with a rectifying structure, and the high-pressure gas provided by the driving source enables the projectile loaded in the launcher to be released at a certain initial speed. The rectifying structure is used to reduce the disturbance in the radial direction of the launcher caused by the gas turbulence when the projectile leaves the launcher.

[0004] However, the above embodiment still has the following defects:

[0005] The above embodiment can only detect the medium with a conventional shape in a single direction, but cannot test some unconventional components, especially the cylindrical steel pipe. The steel pipe often needs to face the sea wind and wave when transporting fluid, and due to the difference between the internal and external pressures, it is easy to be damaged. If only the outside is tested, it is difficult to fit the real situation, so that the function is too single. SUMMARY

[0006] In view of the above problems, the application provides a special stainless steel pipe water entry simulation test device for offshore wind power floating platform, which comprises a steel pipe limiting unit for fixing the steel pipe, an external measuring unit above the steel pipe limiting unit for applying pressure to the steel pipe from the outside, and an internal measuring unit fixedly installed on one side wall of the steel pipe limiting unit main body.

[0007] The inner measuring unit comprises a crescent strip, a second outer arc groove of a fan ring structure is formed in the top of the crescent strip, a test head fixing mechanism is slidably connected in the second outer arc groove, a second electric rotating disc for horizontal rotation is fixedly installed on the top of the test head fixing mechanism, a vertical plate is fixedly installed on the top of the second electric rotating disc, an electric push rod is fixedly installed on a side wall of the vertical plate close to the first fan plate in a horizontal direction, and a translation disc is drivingly installed on the output end of the electric push rod; a test head mechanism for applying pressure to the steel pipe from the inner wall is installed in the center of the translation disc in a horizontal direction.

[0008] Further, the steel pipe limiting unit comprises a first fan plate of a fan structure, a plurality of groups of first outer arc grooves are arranged at equal intervals in a horizontal direction on the top of the first fan plate, and the top view of the first outer arc groove is a fan ring structure; a plurality of groups of first side clamping holes are arranged at equal intervals on both sides of the top of the first outer arc groove; a group of first inner arc grooves are formed in the inner walls on both sides of the first outer arc groove; a clamping plate fixing mechanism is slidably connected in the first outer arc groove, and a first electric rotating disc is fixedly installed on the top of the clamping plate fixing mechanism.

[0009] Further, a clamping plate mounting block is installed on the top of the first electric rotating disc; a lower clamping plate is slidably connected to the top of the clamping plate mounting block, the lower clamping plate is a fan ring tubular structure, the height of the center is higher than that of both ends, and a cutting prevention opening is formed in the top of the lower clamping plate; an upper clamping plate is movably installed on the top of the cutting prevention opening, the structure of the upper clamping plate is the same as that of the lower clamping plate, and the two are symmetrically arranged.

[0010] Further, the clamping plate fixing mechanism comprises an upper fixed plate, two groups of upper side ears are symmetrically arranged on both sides of the upper fixed plate, a lower fixed plate is installed on the bottom of the upper fixed plate and extends into the first outer arc groove, two groups of lower side ears are symmetrically arranged on both sides of the lower fixed plate, and the two groups of lower side ears are slidably connected in the two groups of first inner arc grooves respectively; a plug is movably installed on the upper side ear, the bottom of the plug movably penetrates any group of first side clamping holes on the same side, and is movably inserted into a group of lower side ears on the same side.

[0011] Further, a plurality of groups of second side clamping holes are arranged at equal intervals on both sides of the second outer arc groove, a group of second inner arc grooves are formed in the inner walls on both sides of the second outer arc groove, and the structure of the test head fixing mechanism is the same as that of the clamping plate fixing mechanism; a plurality of groups of extension plates are annularly arranged around the periphery of the translation disc, a port clamping groove is formed in the port of one end of the extension plate away from the translation disc; and the main body length of the test head mechanism is longer than the length of the extension plate.

[0012] Further, the test head mechanism comprises an inner test head body, an inner cavity is formed in the inner test head body, an extension channel is communicated with one end of the inner cavity away from the translation disc, a plurality of groups of side outlets are arranged in an annular array around the extension channel, a horizontal sliding groove is formed in the inner wall of the side outlet, a sliding block is slidably connected in the horizontal sliding groove, and a return spring is installed on one side wall of the sliding block; one end of the sliding block extends into the side outlet, and a test block is installed at the end, one end of the test block extends into the extension channel, and the port is provided as an inclined surface; one end of the test block away from the extension channel movably extends to the outside of the side outlet.

[0013] Further, a micro servo cylinder is installed in the inner cavity, an output end of the micro servo cylinder movably extends into the extension channel, and a pestle head is installed.

[0014] Further, the outer test unit comprises a second fan plate, the second fan plate is the same in size as the first fan plate, and the two are symmetrically arranged; a plurality of groups of third outer arc grooves are arranged at equal intervals at the bottom of the first fan plate, a plurality of groups of third side sockets are arranged at equal intervals on the two sides of the third outer arc groove, a third inner arc groove is arranged on the inner wall of the two sides of the third outer arc groove, and a pressure head fixing mechanism is slidably connected in the third outer arc groove; the pressure head fixing mechanism is the same in structure as the test head fixing mechanism.

[0015] Further, a hydraulic oil cylinder is installed at the bottom of the pressure head fixing mechanism in the vertical direction, an arc pressing plate is installed at the bottom of the hydraulic oil cylinder, the side view cross section of the arc pressing plate is a fan ring structure, and the height at the center is lower than the height at both ends.

[0016] A use method of a special stainless steel pipe water entry simulation test device for offshore wind power floating platforms, the practical method comprises:

[0017] Fix the steel pipe on the steel pipe limiting unit;

[0018] Control the test head fixing mechanism to slide in the second outer arc groove until it reaches the port of the steel pipe and is fixed;

[0019] Control the output end of the inner test head body to rotate by the second electric rotating disc until it faces the port of the steel pipe;

[0020] Start the electric push rod, and extend the output end of the test head fixing mechanism into the steel pipe by the electric push rod;

[0021] Control the test head fixing mechanism to hit the inner wall of the steel pipe in multiple directions to realize the compression resistance test of the steel pipe.

[0022] The beneficial effects of the present application are:

[0023] 1. Control the test head fixing mechanism to slide in the second outer arc groove and come to the steel pipe port, then drive the output end of the inner test head body to rotate through the second electric rotating disc to align with the port of the steel pipe. Start the electric push rod to drive the inner test head body to extend into the steel pipe, then start the micro servo cylinder to push the pestle head to extend into the extension channel and slide with each group of inclined surfaces to fit, so as to push each group of test blocks out of the side outlet, and simultaneously extrude each orientation of the inner wall of the steel pipe, then control the micro servo cylinder to reset, and so on to reciprocate to hit the inner wall of the steel pipe, so as to simulate the situation that the inner and outer pressure difference of the steel pipe changes sharply when the floating platform and the wind power generation equipment are hit by wind and wave, and realize the pressure resistance test of the inner wall of the steel pipe. Thus, the test items are enriched, the steel pipe can be tested inside and outside, and the functionality of the device is enriched.

[0024] 2. Slide the upper fixed plate along the position of the first outer arc groove, then insert the two groups of plugs into the two groups of upper ears respectively. After the bottom of the plug is inserted into the corresponding group of first side sockets, it is inserted into the lower ear on the same side, so as to realize the fixation of the upper fixed plate. Then adjust the extension direction of each group of lower clamping plates according to the arc of the steel pipe, and then control each group of first electric rotating discs to rotate until the extension direction of each group of lower clamping plates is on the same straight line or curve, so that the device can be applied to straight steel pipes and arc steel pipes of any arc, thereby improving the compatibility of the device.

[0025] 3. Each group of the third outer arc grooves is located directly above the gap between the corresponding two groups of first outer arc grooves, and the moving and fixing mode of the pressure head fixing mechanism is the same as that of the clamping plate fixing mechanism, so that each group of arc pressure plates can move completely in cooperation with the shape of the steel pipe. And each group of arc pressure plates can move and lift independently, so that it can perform single-point or multi-point external pressure resistance test according to requirements. At the same time, during the test, each group of first electric rotating discs can be controlled to rotate independently, and each group of arc pressure plates can be controlled to lift independently, so as to simulate the situation that the steel pipe is hit by irregular wind and wave in different directions on the sea, thereby improving the auxiliary effect of the test.

[0026] 4. When the steel pipe is twisted due to external test, the combination of the steel pipe and the lower clamping plate and the arc pressure plate is twisted due to pressure. Since both are fan ring-shaped tubular structures, the steel pipe will be held by the inner wall of the lower clamping plate and the arc pressure plate, avoiding the secondary damage to the steel pipe by the edge of the traditional clamp, and avoiding the slipping phenomenon at the combination of the steel pipe and the arc pressure plate, thereby improving the accuracy of the steel pipe pressure resistance test.

[0027] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be achieved and obtained by the structures indicated in the specification, claims and drawings. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the detection device according to an embodiment of the present invention is shown.

[0030] Figure 2 A schematic diagram of the steel pipe limiting unit according to an embodiment of the present invention is shown.

[0031] Figure 3 A partial cross-sectional schematic diagram of the first outer arc groove according to an embodiment of the present invention is shown.

[0032] Figure 4 A schematic diagram of the structure of the lower clamping plate according to an embodiment of the present invention is shown.

[0033] Figure 5 A schematic diagram of the clamp fixing mechanism according to an embodiment of the present invention is shown.

[0034] Figure 6 A schematic diagram of the internal test unit according to an embodiment of the present invention is shown.

[0035] Figure 7 A schematic diagram showing the connection between the test head mechanism and the electric push rod according to an embodiment of the present invention is provided.

[0036] Figure 8 A cross-sectional schematic diagram of a test head mechanism according to an embodiment of the present invention is shown.

[0037] Figure 9 A bottom view of the external measuring unit according to an embodiment of the present invention is shown.

[0038] Figure 10 A schematic diagram showing the connection between the arc pressure plate and the hydraulic cylinder according to an embodiment of the present invention is provided.

[0039] In the figure: 100, steel pipe limiting unit; 110, first fan plate; 120, first outer arc groove; 121, first inner arc groove; 130, first side clamping hole; 140, clamping plate fixing mechanism; 141, upper fixed plate; 142, lower fixed plate; 143, upper side ear; 144, lower side ear; 145, plug; 150, first electric rotating disc; 160, clamping plate mounting block; 170, lower clamping plate; 171, anti-cutting opening; 180, upper clamping plate; 200, internal measurement unit; 210, crescent strip; 211, second outer arc groove; 212, second side clamping hole; 220, test head fixing mechanism; 230, second electric rotating disc; 240, vertical plate; 250, electric push rod; 260, translation disc; 270, extension plate; 271, port clamping groove; 280, test head mechanism; 281, internal test head body; 282, internal cavity; 283, extension channel; 284, side outlet; 285, transverse sliding groove; 2851, sliding block; 2852, return spring; 286, test block; 287, micro servo cylinder; 288, pestle head; 300, external measurement unit; 310, second fan plate; 311, third outer arc groove; 312, third side clamping hole; 320, pressure head fixing mechanism; 330, hydraulic oil cylinder; 340, arc pressure plate. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely explain the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0041] The embodiments of the present application provide a special stainless steel pipe water entry simulation test device for offshore wind power floating platforms, for example, as shown in the figure, which comprises a steel pipe limiting unit 100. Figure 1 The steel pipe limiting unit 100 is used for fixing the steel pipe.

[0042] For example, the steel pipe limiting unit 100 is provided above the external measurement unit 300, the main body of the external measurement unit 300 is the same as that of the steel pipe limiting unit 100, and the output end of the external measurement unit 300 is movably extended to the surface of the steel pipe limiting unit 100. The external unit 300 is used to apply pressure to the steel pipe from the top to realize the compression resistance test of the steel pipe from the outside.

[0043] Exemplarily, the steel pipe limiting unit 100 is provided with an internal measuring unit 200 on one side of the outer wall, and the output end of the internal measuring unit 200 is movably extended to the surface of the steel pipe limiting unit 100. The output end of the internal measuring unit 200 can be extended to the inside of the steel pipe, and the internal measuring unit 200 can apply pressure to the steel pipe from the inside.

[0044] Exemplarily, as shown in Figure 2 , Figure 3 and Figure 4 , the steel pipe limiting unit 100 comprises a first fan plate 110 in a fan shape, and a plurality of groups of first outer arc grooves 120 are arranged at equal intervals in the horizontal direction on the top of the first fan plate 110. The first outer arc grooves 120 have a fan ring structure in the top view. A plurality of groups of first side clamping holes 130 are arranged at equal intervals on both sides of the top of the first outer arc grooves 120. A group of first inner arc grooves 121 is respectively formed on the inner walls on both sides of the first outer arc grooves 120. A clamping plate fixing mechanism 140 is slidably connected in the first outer arc grooves 120. A first electric turntable 150 is fixedly installed on the top of the clamping plate fixing mechanism 140. The model of the first electric turntable 150 is Y200RA200. The rotation angle of the first electric turntable 150 is less than 90 degrees.

[0045] Exemplarily, a clamping plate mounting block 160 is installed on the top of the first electric turntable 150. A lower clamping plate 170 is fixedly installed on the top of the clamping plate mounting block 160. The lower clamping plate 170 is a fan ring-shaped tubular structure, and the height of the center is higher than the height of the two ends. A cutting prevention opening 171 is formed on the top of the lower clamping plate 170. An upper clamping plate 180 is movably installed on the top of the cutting prevention opening 171. The structure of the upper clamping plate 180 is the same as that of the lower clamping plate 170, and the two are symmetrically arranged. The connection mode of the upper clamping plate 180 and the lower clamping plate 170 is preferably bolted.

[0046] Exemplarily, as shown in Figure 5 , the clamping plate fixing mechanism 140 comprises an upper fixed plate 141, and two groups of upper side ears 143 are symmetrically arranged on both sides of the upper fixed plate 141. A lower fixed plate 142 is installed on the bottom of the upper fixed plate 141 and extends into the first outer arc grooves 120. Two groups of lower side ears 144 are symmetrically arranged on both sides of the lower fixed plate 142, and the two groups of lower side ears 144 are respectively slidably connected in the two groups of first inner arc grooves 121. A plug 145 is movably installed on the upper side ear 143, and the bottom of the plug 145 movably penetrates any group of first side clamping holes 130 on the same side and movably plugs into a group of lower side ears 144 on the same side.

[0047] First, based on the shape of the steel pipe, adjust the position of each set of inner clamping plate fixing mechanisms 140 within each set of outer arc grooves 120: First, slide the upper fixing plate 141 horizontally along the position of the first outer arc groove 120. After sliding to the corresponding position, insert the two sets of bolts 145 into the two sets of upper side ears 143 respectively. After the bottom of the bolt 145 passes through the corresponding set of first side bayonet 130, it is inserted into the lower side ear 144 on the same side, thereby fixing the upper fixing plate 141. Then, adjust the extension direction of each set of lower clamping plates 170 according to the curvature of the steel pipe, so that the device can be applied to straight steel pipes and curved steel pipes of any curvature. Control the rotation of each set of first electric turntables 150 until the extension direction of each set of lower clamping plates 170 is on the same straight line or curve.

[0048] Then, the steel pipe frame is attached to each set of lower clamping plates 170, and each set of upper clamping plates 180 is installed on top of its corresponding set of lower clamping plates 170, thereby fixing the steel pipe. Then, the output end of the external testing unit 300 is activated to descend and press down on all parts of the steel pipe simultaneously. When the steel pipe is twisted due to pressure, the joint between it and the lower clamping plate 170 will also twist. Since the lower clamping plate 170 is a fan-shaped tubular structure, and the height at the center is higher than the height at both ends, when the steel pipe twists at the joint with the lower clamping plate 170, it will be supported by the inner wall of the lower clamping plate 170, avoiding secondary damage to the steel pipe at the edge of the traditional clamp, thereby improving the accuracy of the steel pipe compression test.

[0049] For example, such as Figure 6 and Figure 7 As shown, the internal testing unit 200 includes a crescent-shaped strip 210. The top of the crescent-shaped strip 210 has a second outer arc groove 211 with a fan-shaped structure. Several sets of second side slots 212 are evenly spaced on both sides of the second outer arc groove 211. A set of second inner arc grooves is formed on the inner walls of both sides of the second outer arc groove 211. A test head fixing mechanism 220 is slidably connected within the second outer arc groove 211. The structure of the test head fixing mechanism 220 is the same as that of the clamp fixing mechanism 140. A second electric turntable 230 is fixedly installed on the top of the test head fixing mechanism 220. A vertical plate 240 is fixedly installed on the top of the second electric turntable 230. An electric push rod 250 is fixedly installed horizontally on the side wall of the vertical plate 240 near the first fan plate 110. A translation disk 260 is driven and installed on the output end of the electric push rod 250. The rotation angle of the second electric turntable 230 is less than 90 degrees.

[0050] For example, several sets of extension plates 270 are arranged in a circular array around the periphery of the translation disk 260, and a port slot 271 is provided at the end of the extension plate 270 away from the translation disk 260. A test head mechanism 280 is installed horizontally at the center of the translation disk 260, and the main body length of the test head mechanism 280 is longer than the length of the extension plate 270.

[0051] As shown in the drawings, Figure 8 The test head mechanism 280 includes an inner test head body 281, an inner cavity 282 is formed in the inner test head body 281, an extension channel 283 is communicated with one end of the inner cavity 282 away from the translation disc 260, a plurality of groups of side outlets 284 are arranged in an annular array around the extension channel 283, a horizontal sliding groove 285 is formed in the inner wall of the side outlet 284, a sliding block 2851 is slidably connected in the horizontal sliding groove 285, and a return spring 2852 is installed on one side wall of the sliding block 2851. One end of the sliding block 2851 extends into the side outlet 284, and a test block 286 is installed at the one end of the sliding block 2851, the test block 286 extends into the extension channel 283, and the port is provided as an inclined surface. The test block 286 extends to the outside of the side outlet 284.

[0052] As shown in the drawings, The inner cavity 282 is provided with a micro servo cylinder 287, the output end of the micro servo cylinder 287 extends to the extension channel 283, and a pestle head 288 is installed at the output end of the micro servo cylinder 287, and the pestle head 288 is in sliding fit with the inclined surface. The model of the micro servo cylinder 287 is INSPIRE-ROBOTS.

[0053] After the steel pipe is fixed, when the compression resistance test of the inside of the steel pipe is needed, the test head fixing mechanism 220 is controlled to slide in the second outer arc groove 211 until it reaches the port of the steel pipe, and the test head fixing mechanism 220 is fixed in the same way as the clamping plate fixing mechanism 140. After completion, the output end of the inner test head body 281 is driven to rotate by the second electric rotating disc 230 until it faces the port of the steel pipe. Then the electric push rod 250 is started, and the inner test head body 281 is extended into the steel pipe by the electric push rod 250 until the port clamping groove 271 is clamped at the port of the steel pipe, so as to avoid shaking during the test of the inside of the steel pipe. Then the micro servo cylinder 287 is started, and the pestle head 288 is pushed into the extension channel 283 by the micro servo cylinder 287, and is in sliding fit with each group of inclined surfaces, so as to push each group of test blocks 286 out of the side outlet 284, and simultaneously extrude the steel pipe inner wall in each direction. In this way, the compression resistance test of the steel pipe inner wall is realized.

[0054] Then the micro servo motor 287 drives the pestle head 288 to reset, under the action of the return spring 2852, each group of test blocks 286 returns to the side outlet 284, and then the cycle is repeated to hit the steel pipe inner wall multiple times.

[0055] As shown in the drawings, Figure 9 and Figure 10As shown, the outer measuring unit 300 comprises a second fan plate 310, which is the same in size and structure as the first fan plate 110 and symmetrically arranged above and below. The bottom of the first fan plate 110 is arranged with a plurality of groups of third outer arc grooves 311 at equal intervals, and each group of third outer arc grooves 311 is located directly above the gap between the corresponding two groups of first outer arc grooves 120. The two sides of the third outer arc groove 311 are arranged with a plurality of groups of third side notches 312 at equal intervals, and a group of third inner arc grooves is arranged on the inner wall of the two sides of the third outer arc groove 311. The third outer arc groove 311 is slidably connected with a pressure head fixing mechanism 320. The structure of the pressure head fixing mechanism 320 is the same as that of the clamping plate fixing mechanism 140.

[0056] For example, the bottom of the pressure head fixing mechanism 320 is vertically mounted with a hydraulic oil cylinder 330, and the bottom of the hydraulic oil cylinder 330 is mounted with an arc pressing plate 340. The side view of the arc pressing plate 340 is a fan ring structure, and the height at the center is lower than that at both ends.

[0057] When the compression test of the outer part of the steel pipe is needed, first, each group of pressure head fixing mechanisms 320 is slid in each group of third outer arc grooves 311 until it is directly above the steel pipe, and then the pressure head fixing mechanism 320 is fixed by the same fixing method as the clamping plate fixing mechanism 140. Then the arc pressing plate 340 is controlled to descend by the hydraulic oil cylinder 330, and the steel pipe is extruded from above, so as to realize the compression test of the outer part of the steel pipe.

[0058] The above embodiment has the following beneficial effects:

[0059] 1. Control the test head fixing mechanism 220 to slide in the second outer arc groove 211 and come to the port of the steel pipe, and then rotate the output end of the inner measuring head body 281 to align with the port of the steel pipe by the second electric rotating disc 230. Start the electric push rod 250 to drive the inner measuring head body 281 to extend into the steel pipe, and then start the micro servo cylinder 287 to drive the pestle head 288 to extend into the extension channel 283 and slide with each group of inclined surfaces, so as to push each group of test blocks 286 out of the side outlet 284 and extrude the inner wall of the steel pipe in each direction at the same time. Then control the micro servo cylinder 287 to reset, and repeat the above process to hit the inner wall of the steel pipe. In this way, the compression test of the inner wall of the steel pipe is realized. This enriches the test items, so that the inner and outer parts of the steel pipe can be tested, and the functionality of the device is also enriched.

[0060] 2、Along the position of the first outer arc groove 120, slide the upper fixed plate 141 horizontally, and then insert the two groups of insertion plugs 145 into the two groups of upper side ears 143 respectively. After the bottom of the insertion plug 145 penetrates through the corresponding group of first side notches 130, it is inserted into the lower side ear on the same side, so as to realize the fixation of the upper fixed plate 141. Then, according to the arc of the steel pipe, the extension direction of each group of lower clamping plates 170 is adjusted, and then the rotation of each group of first electric rotating discs 150 is controlled, until the extension direction of each group of lower clamping plates 170 is on the same straight line or curve, so that the device can be suitable for straight steel pipes and arc-shaped steel pipes with any arc, thereby improving the compatibility of the device.

[0061] 3、Each group of the third outer arc groove 311 is located directly above the gap between the corresponding two groups of first outer arc grooves 120, and the moving and fixing mode of the pressure head fixing mechanism 320 is the same as that of the clamping plate fixing mechanism 140, so that each group of arc pressure plates 340 can move completely in cooperation with the shape of the steel pipe. And each group of arc pressure plates 340 can move and lift independently, so that it can be subjected to single-point or multi-point external compression test at the same time according to requirements, thereby improving the auxiliary effect of the test.

[0062] 4、When the steel pipe is twisted due to external test, the combination of the steel pipe and the lower clamping plate 170 and the arc pressure plate 340 is twisted due to pressure, and since both are fan ring-shaped tubular structures, the steel pipe is supported by the inner wall of the lower clamping plate 170 and the arc pressure plate 340, avoiding the secondary damage to the steel pipe at the edge of the traditional clamp, and avoiding the slipping phenomenon at the combination of the steel pipe and the arc pressure plate 340, thereby improving the accuracy of the compression test of the steel pipe.

[0063] On the basis of the above-mentioned offshore wind floating platform special stainless steel pipe water entry simulation test device, the embodiment of the present application also proposes a use method of the test device, and exemplarily, the use method comprises:

[0064] Slide the upper fixed plate along the position of the first outer arc groove horizontally, and after sliding to the corresponding position, insert the two groups of insertion plugs into the two groups of upper side ears respectively;

[0065] After the bottom of the insertion plug penetrates through the corresponding group of first side notches, it is inserted into the lower side ear on the same side, so as to realize the fixation of the upper fixed plate;

[0066] Adjust the extension direction of each group of lower clamping plates according to the arc of the steel pipe, until the extension direction of each group of lower clamping plates is on the same straight line or curve;

[0067] Connect the steel pipe frame to each group of lower clamping plates, and install each group of upper clamping plates on the top of the corresponding group of lower clamping plates respectively;

[0068] Controlling the test head fixing mechanism to slide in the second outer arc slot until it reaches the steel pipe port, and fixing the test head fixing mechanism in the same way as the clamping plate fixing mechanism;

[0069] Controlling the second electric turntable to drive the output end of the inner test head body to rotate until it faces the port of the steel pipe;

[0070] Starting the electric push rod, and driving the inner test head body to extend into the steel pipe by the electric push rod until the port clamping groove is clamped at the port of the steel pipe;

[0071] Extending the pestle head into the extension channel by the micro servo cylinder, and sliding and fitting with each group of inclined surfaces, so as to push each group of test blocks out of the side outlet and simultaneously extrude the inner wall of the steel pipe in each direction;

[0072] Controlling the micro servo motor to drive the pestle head to reset, and under the action of the reset spring, each group of test blocks returns to the side outlet, and then reciprocates to hit the inner wall of the steel pipe for multiple times;

[0073] When testing the outer part of the steel pipe, sliding each group of pressure head fixing mechanisms in each group of third outer arc slots until they are above the steel pipe, and then fixing them;

[0074] Controlling the arc pressing plate to descend by the hydraulic oil cylinder, and extruding the steel pipe from above.

[0075] Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A water immersion simulation test device for a stainless steel pipe specifically designed for offshore wind power floating platforms, comprising a steel pipe limiting unit for fixing the steel pipe, characterized in that: An external measuring unit for applying pressure to the steel pipe from the outside is provided directly above the steel pipe limiting unit. Both the main body of the steel pipe limiting unit and the external measuring unit are fan-shaped structures. An internal measuring unit is fixedly installed on one side wall of the main body of the steel pipe limiting unit. The internal testing unit includes a crescent-shaped strip. A second outer arc groove with a fan-shaped structure is formed at the top of the crescent-shaped strip. A test head fixing mechanism is slidably connected within the second outer arc groove. A second electric turntable for horizontal rotation is fixedly installed at the top of the test head fixing mechanism. A vertical plate is fixedly installed at the top of the second electric turntable. An electric push rod is fixedly installed horizontally on the side wall of the vertical plate near the first fan-shaped plate. A translation disk is driven and installed on the output end of the electric push rod. A test head mechanism for applying pressure to the steel pipe from the inner wall is installed horizontally at the center of the translation disk. The external measuring unit includes a second fan plate, which is the same size and structure as the first fan plate and is symmetrically arranged vertically. The bottom of the first fan plate has several sets of third outer arc grooves arranged at equal intervals. Several sets of third side slots are arranged at equal intervals on both sides of the third outer arc groove. A set of third inner arc grooves is provided on the inner walls of both sides of the third outer arc groove. A pressure head fixing mechanism is slidably connected in the third outer arc groove. A hydraulic cylinder is installed vertically at the bottom of the pressure head fixing mechanism. An arc pressure plate is installed at the bottom of the hydraulic cylinder. The side view cross-section of the arc pressure plate is a fan-shaped annular structure. The steel pipe limiting unit includes a first fan-shaped plate with a fan-shaped structure. The top of the first fan-shaped plate has several sets of first outer arc grooves arranged at equal intervals along the horizontal direction. The top view of the first outer arc groove is a fan-shaped annular structure. Several sets of first side slots are arranged at equal intervals on both sides of the top of the first outer arc groove. A set of first inner arc grooves is opened on the inner walls of both sides of the first outer arc groove. A clamping plate fixing mechanism is slidably connected in the first outer arc groove. A first electric turntable is fixedly installed on the top of the clamping plate fixing mechanism. The first electric turntable is equipped with a clamping plate mounting block on its top; a lower clamping plate is fixedly mounted on the top of the clamping plate mounting block. The lower clamping plate is a fan-shaped tubular structure, and the height at the center is higher than the height at both ends. A cut-proof opening is provided on the top of the lower clamping plate; an upper clamping plate is movably mounted on the top of the cut-proof opening. The upper clamping plate has the same structure as the lower clamping plate, and the two are symmetrically arranged. The test head mechanism includes an inner test head body, which has an inner cavity. The end of the inner cavity away from the translation disk is connected to an extension channel. Several sets of side outlets are distributed in a circular array around the extension channel. A transverse sliding groove is formed on the inner wall of the side outlet, and a slider is slidably connected in the transverse sliding groove. A return spring is installed on one side wall of the slider. One end of the slider extends into the side outlet and is equipped with a test block. One end of the test block extends into the extension channel, and its port is set as an inclined surface. The end of the test block away from the extension channel extends movably to the outside of the side outlet.

2. The stainless steel pipe water entry simulation test device for offshore wind power floating platforms according to claim 1, characterized in that: The clamp fixing mechanism includes an upper fixed plate, on which two sets of upper side ears are symmetrically arranged on both sides. The bottom of the upper fixed plate extends into the first outer arc groove and is fitted with a lower fixed plate. On which two sets of lower side ears are symmetrically arranged on both sides, the two sets of lower side ears are slidably connected in the two sets of first inner arc grooves respectively. A plug is movably installed on the upper side ear, the bottom of the plug movably passes through any set of first side slots on the same side, and is movably inserted into a set of lower side ears on the same side.

3. The stainless steel pipe water entry simulation test device for offshore wind power floating platforms according to claim 1, characterized in that: The second outer arc groove has several sets of second side slots arranged at equal intervals on both sides. The inner walls of the second outer arc groove are respectively provided with a set of second inner arc grooves. The structure of the test head fixing mechanism is the same as that of the clamp fixing mechanism. Several sets of extension plates are distributed in a ring array around the perimeter of the translation disk. The extension plates are provided with port slots at the ends away from the translation disk. The length of the main body of the test head mechanism is longer than the length of the extension plates.

4. The stainless steel pipe water entry simulation test device for offshore wind power floating platforms according to claim 1, characterized in that: A miniature servo electric cylinder is installed in the inner cavity. The output end of the miniature servo electric cylinder extends movably into the extension channel and is equipped with a pestle head, which slides and fits against the inclined surface.

5. The stainless steel pipe water entry simulation test device for offshore wind power floating platforms according to claim 1, characterized in that: The structure of the pressure head fixing mechanism is the same as that of the test head fixing mechanism.

6. The stainless steel pipe water entry simulation test device for offshore wind power floating platforms according to claim 5, characterized in that: The height at the center of the arc-shaped pressure plate should be lower than the height at both ends.

7. A method of using a water-entry simulation test device for a special stainless steel pipe on an offshore wind power floating platform as described in any one of claims 1-6, characterized in that: Usage instructions include: Fix the steel pipe to the steel pipe limiting unit; The control test head fixing mechanism slides within the second outer arc groove until it reaches the end of the steel pipe and is then fixed. Control the second electric turntable to drive the output end of the inner probe body to rotate until it faces the port of the steel pipe; Start the electric push rod, which drives the output end of the test head fixing mechanism to extend into the steel pipe. The control test head fixing mechanism strikes the inner wall of the steel pipe multiple times from all directions to achieve the compressive strength test of the steel pipe.

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