A test device for the corrosion resistance of anti-corrosion coatings for wind turbine towers

Abstract

The present invention relates to the technical field of corrosion resistance testing devices, and specifically discloses a testing device for the corrosion resistance of anti-corrosion coatings on wind turbine towers, including a testing mechanism arranged inside the testing machine for performing a corrosion resistance test on the anti-corrosion coating, the testing mechanism including a lower shell and an upper shell, the end corners between the lower shell and the upper shell are each provided with a connecting component for connecting the lower shell and the upper shell, and the interior of the lower shell is provided with a placement component arranged at intervals. The present invention avoids blocking corrosive gases by distributing the test plates in an annular shape and aligning the lower and upper surfaces of the test plates horizontally, so as to facilitate the corrosive gases to fully contact with the anti-corrosion coatings on the upper and lower surfaces of the test plates, thereby avoiding the situation in which the supported side of the test plate is poorly in contact with the corrosive gas during traditional tests, thereby avoiding the influence of the accuracy of the test due to the different degrees of contact between the anti-corrosion coating and the corrosive gas, so as to improve the accuracy of the test.

Description

Technical Field

[0001] The invention relates to the technical field of corrosion resistance testing devices, in particular to a testing device for the corrosion resistance of anti-corrosion coatings on a wind turbine tower. Background Art

[0002] The wind turbine tower is the tower pole of wind power generation, which mainly plays a supporting role in the wind turbine generator set. Since wind power generation equipment is usually installed outdoors, the surface of the wind turbine tower needs to be coated with corrosion-resistant paint after forming to facilitate its long-term use.

[0003] A sample placement device for a testing machine with publication number CN118090579B has the following problem raised in its background technology: in existing testing machines, samples are placed directly on a shelf or placed in a plastic or glass basket and then placed on a shelf. Unless they are manually turned over at regular intervals, the position of the samples is basically fixed, which will cause the corrosion degree of the part in contact with the sample shelf or basket to be inconsistent with that of other parts, reducing the persuasiveness of the test results.

[0004] A pipe flow corrosion test device with publication number CN113984639B has the following problem in its background technology: most of the existing pipe flow corrosion test devices only study a single influencing factor, and no systematic and comprehensive experimental research has been conducted on the corrosion mechanism, dominant corrosion factors, pipeline anti-corrosion design rules, etc. in the seawater pipeline system.

[0005] Based on the existing technology, there are the following problems:

[0006] When conducting a corrosion test, the anti-corrosion coating to be tested is usually first coated on a test piece of the same material as the base material, and then placed in a testing machine for a corrosion resistance test to understand the corrosion resistance of the coating. Therefore, during the test, it is only necessary to make the position where the test piece is coated with the coating fully contact with the corrosive gas, without the traditional adjustment of the angle of the test piece to make the corrosive gas fully contact with the coating. Referring to the above application documents, although the contact degree between the test piece and the corrosive gas is improved by adjusting the angle, the supported side of the test piece is always blocked by the supporting structure, affecting the contact with the corrosive gas, thereby affecting the effect of the corrosion test. In addition, the above application documents conduct corrosion tests on pipes with different inner diameters through the connection of multiple pipes, which is cumbersome to operate and affects the test efficiency. After a period of corrosion resistance test, the corroded coating flows into the testing machine, resulting in a large amount of impurities attached to the testing machine, which corrodes it. The existing testing machine is not convenient for cleaning impurities, and there are certain shortcomings. In order to solve the above problems, a test device for the corrosion resistance of anti-corrosion coatings for wind turbine towers is proposed. Summary of the invention

[0007] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a test device for the corrosion resistance of anti-corrosion coatings on wind turbine towers, which facilitates the full contact between corrosive gases and the anti-corrosion coatings being tested, improves the accuracy of the test, and facilitates the cleaning of the interior of the test machine for long-term use.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: A test device for the corrosion resistance of anti-corrosion coatings for wind turbine towers, comprising a test machine, and a test mechanism arranged inside the test machine for performing a corrosion resistance test on the anti-corrosion coating, the test mechanism comprising:

[0009] The lower shell is fixedly arranged on the bottom inner wall of the testing machine. The top of the lower shell is detachably provided with an upper shell. The end corners between the lower shell and the upper shell are provided with connecting components for connecting the lower shell and the upper shell. The interior of the lower shell is provided with spaced placement components, which include:

[0010] The ring body is arranged inside the lower shell body, and the ring bodies arranged at intervals are fixedly connected. The outer wall of the ring body is provided with placement grooves arranged in a circular array, and the inner wall of the placement groove is sleeved with a test plate. The anti-corrosion coating to be tested for corrosion resistance is coated on the upper and lower surfaces of the test plate. The inner walls of both sides of the placement groove are provided with limit assemblies for limiting the test plate, and the limit assemblies include:

[0011] The arc grooves are arranged on the inner walls on both sides of the through groove, and the curvature of the arc grooves is consistent with the curvature of the ring body.

[0012] Furthermore, the limiting component also includes:

[0013] The arc block is sleeved in the arc groove and fits with the inner wall of the arc groove so that the arc block moves along the inner wall of the arc groove. Slots adapted to the arc block are provided on both sides of the test plate so that the arc block is embedded in the slots, thereby limiting the test plate. A first spring symmetrically arranged with respect to the center point of the arc groove is sleeved inside the arc groove and on the side of the arc block away from the placement through groove, and the first spring is fixedly connected to the arc block;

[0014] The shifting groove is opened on the outer wall of the ring body and is connected with the arc groove. The inner wall of the shifting groove is sleeved with a shifting block, and the bottom of the shifting block is fixedly connected to the top of the arc block. The inner wall length of the shifting groove along the length direction of the first spring is smaller than the inner wall length of the arc groove along the length direction of the first spring.

[0015] Furthermore, the upper shell and the lower shell are both semi-annular in design, and the upper shell and the lower shell are connected by a connecting assembly to form a ring, and both sides of the upper shell and the lower shell are open in design, and both side openings of the lower shell are provided with rotating assemblies for connecting the lower shell and the ring body so that the placement assembly can rotate in the lower shell, and a cleaning assembly for cleaning the upper shell and the lower shell is provided at the bottom of the lower shell, and the cleaning assembly and the rotating assembly are arranged in linkage.

[0016] Further, the connection component comprises:

[0017] A first connecting groove is provided at the top corner of the lower shell, a second connecting groove is provided on the inner wall of the first connecting groove, and a first electromagnet is fixedly provided on the top inner wall of the second connecting groove;

[0018] A connecting block is fixedly arranged at the bottom end corner of the upper shell body and is adapted to the inner wall of the first connecting groove. A third connecting groove is provided on a side of the connecting block close to the first electromagnet. The longitudinal section of the third connecting groove is convexly designed. A connecting rod extending outside the third connecting groove is sleeved on the inner wall of the third connecting groove. A second electromagnet is fixedly arranged on the top of one end of the connecting rod located outside the third connecting groove. The second electromagnet and the first electromagnet are close to each other on the same magnetic pole, and the first electromagnet and the second electromagnet are both arc-shaped;

[0019] A connecting ring is fixedly sleeved on the side wall of one end of the connecting rod located in the third connecting groove, and cooperates with the third connecting groove stopper to limit the connecting rod from being separated from the third connecting groove. A second spring is sleeved on the side wall of one end of the connecting rod located in the third connecting groove and on the side of the connecting ring close to the second electromagnet. The second spring is fixedly connected to the connecting ring.

[0020] Furthermore, the connection component further comprises:

[0021] A connecting hole is opened on the inner wall of the second connecting groove and passes through to the outside of the lower shell body. The middle end of the inner wall of the connecting hole is designed to protrude outward. A retaining ring is sleeved on the middle end of the inner wall of the connecting hole. A retaining rod is fixedly sleeved on the inner wall of the retaining ring. The retaining rod extends along both ends of the inner wall of the connecting hole to the inside of the second connecting groove and the outside of the lower shell body respectively. The retaining rod is located on one end side wall of the connecting hole and on the side of the retaining ring close to the first electromagnet and is sleeved with a third spring.

[0022] Furthermore, the rotating assembly comprises:

[0023] The fixing part is fixedly arranged on the outer wall of the ring body and extends to the outside of the lower shell body. The outer wall of the fixing part is rotatably provided with a rotating part. The outer wall of the rotating part is fixedly connected to the opening of the lower shell body so that the ring body and the lower shell body are rotatably connected. The fixing part is hollow in design. The inner wall of the fixing part and the interior of the lower shell body are respectively provided with a first injection assembly and a second injection assembly for injecting corrosive gas.

[0024] Further, the cleaning component comprises:

[0025] The cover body is fixed at the bottom of the lower shell body and is connected to the interior of the lower shell body. The inner walls on both sides of the cover body are rotatably provided with threaded rods extending to the outside of the cover body. The side wall of one end of the threaded rod is located in the cover body and is threadedly connected with a threaded seat. A scraper is fixedly provided on the top of the threaded seat, and the scraper is annular in design. The outer wall of the scraper fits with the inner wall after the upper shell body and the lower shell body are connected. The inner wall of the cover body fits with the side wall of the threaded seat to limit the threaded seat, so that the threaded seat is driven to move along the length direction of the cover body when the threaded rod rotates. A sewage pipe extending to the bottom of the cover body is fixedly provided on the bottom inner wall of the cover body, and a valve is provided on the outer wall of the sewage pipe.

[0026] Furthermore, the rotating assembly further comprises:

[0027] The servo motor is fixed on the outer wall of the lower shell body. The output shaft of the servo motor is fixed with a rotating shaft through a coupling. The rotating shaft is rotatably connected to the lower shell body. The side wall of the rotating shaft is provided with a transmission mechanism for transmitting the fixing part and the threaded rod, so that the servo motor drives the fixing part and the threaded rod to rotate.

[0028] Further, the first injection assembly comprises:

[0029] A connecting piece is fixedly arranged on the side wall of the lower shell, a mounting plate is fixedly arranged on one end of the connecting piece away from the lower shell, and the side wall of the mounting plate is sleeved on the inner wall of the fixing piece, and a sealing design is provided between the mounting plate and the fixing piece, a mounting groove is provided on the side of the mounting plate away from the connecting piece, a first guide box with an annular design is fixedly arranged on the inner wall of the mounting groove, and a first nozzle arranged in an annular array is fixedly arranged on the side of the first guide box close to the ring body to transport corrosive gas to the inside of the ring body;

[0030] The first conduit is fixedly arranged on the inner side of the first guide box and communicated with the interior of the first guide box. One end of the first conduit away from the first guide box extends to the outside of the testing machine.

[0031] Further, the second injection assembly comprises:

[0032] The second guide box is fixedly arranged on the inner wall of the lower shell body and is sleeved on the outer side of the ring body. The second guide box is designed in an annular shape. The outer wall diameter of the second guide box is smaller than the inner wall diameter of the scraper. The inner side of the second guide box is fixedly provided with second nozzles arranged in a circular array. The outer side of the second guide box is fixedly provided with a second conduit extending to the outside of the testing machine, and the second conduit is connected to the interior of the second guide box.

[0033] The present invention provides a test device for the corrosion resistance of anti-corrosion coatings for wind turbine towers. Compared with the prior art, it has the following beneficial effects:

[0034] 1. The present invention makes the test plates distributed in an annular shape and aligns the lower and upper surfaces of the test plates horizontally to avoid blocking the corrosive gas, so that the corrosive gas can fully contact the anti-corrosion coatings on the upper and lower surfaces of the test plates, thereby avoiding the situation in which the supported side of the test plate is not in good contact with the corrosive gas during the traditional test, thereby avoiding the influence of the test accuracy due to the different contact degrees between the anti-corrosion coating and the corrosive gas, and improving the test accuracy.

[0035] 2. The present invention sprays corrosive gas through the inner wall and outer wall of the ring body respectively through the first spray assembly and the second spray assembly, thereby performing a corrosion resistance test on the anti-corrosion coating on the upper and lower surfaces of the test plate, further improving the contact degree between the corrosive gas and the anti-corrosion coating and improving the test effect.

[0036] 3. The present invention facilitates the connection and limiting of the upper shell and the lower shell through the connection assembly, thereby facilitating the connection or separation of the upper shell and the lower shell. When connected, it is convenient to seal the corrosive gas so that the corrosive gas is in full contact with the anti-corrosion coating to be tested, and the upper shell and the lower shell are tightly attached through the first electromagnet and the second electromagnet, thereby further improving the sealing performance. When separated, it is convenient to install the test plate in the ring body, which is convenient for actual operation.

[0037] 4. The present invention limits the test plate from both sides of the test plate by placing components, which does not affect the contact between the anti-corrosion coating on the upper and lower surfaces of the test plate and the corrosive gas, facilitates the corrosive gas and the anti-corrosion coating to fully contact, thereby improving the test effect, and is convenient for limiting test plates of different shapes to suit actual usage conditions.

[0038] 5. The present invention rotates the ring body by rotating the assembly, which is beneficial to stirring the corrosive gas in the upper shell and the lower shell, so that the corrosive gas is fully contacted with the anti-corrosion coating to improve the test effect. By rotating the ring body, impurities can be easily cleaned during the subsequent cleaning of the upper shell and the lower shell, thereby improving the cleaning effect. In combination with the cleaning assembly, the cleaning effect is further improved, which is convenient for long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of a test device for the corrosion resistance of anti-corrosion coatings for wind turbine towers according to the present invention;

[0040] Figure 2 It is a schematic cross-sectional structural diagram of the testing machine of the present invention;

[0041] Figure 3 It is a schematic diagram of the explosion structure of the upper shell and the lower shell of the present invention;

[0042] Figure 4 It is a schematic diagram of the connection structure between the upper shell and the lower shell of the present invention;

[0043] Figure 5 For the present invention Figure 4 A is a schematic diagram of the enlarged structure of the middle part;

[0044] Figure 6 It is a schematic diagram of the structure of the rotating assembly of the present invention;

[0045] Figure 7 It is a schematic diagram of the structure of the cleaning component of the present invention;

[0046] Figure 8 It is a schematic diagram of the second injection assembly and scraper structure of the present invention;

[0047] Fig. 9 It is a schematic diagram of the structure of the placement component of the present invention;

[0048] Fig.10 It is a schematic diagram of the structure of the limit assembly of the present invention;

[0049] Fig.11 For the present invention Fig.10 Schematic diagram of the enlarged structure of B;

[0050] Fig.12 It is a schematic structural diagram of the first injection assembly of the present invention;

[0051] Fig.13 It is a schematic diagram of the structure of the mounting plate, the first guide box and the first nozzle of the present invention.

[0052] Reference numerals in the above drawings: 1. testing machine; 2. testing mechanism;

[0053] 21. Upper shell; 22. Lower shell; 23. Placement assembly; 24. Drain pipe; 25. Cleaning assembly; 26. Second injection assembly; 27. Rotation assembly; 28. First injection assembly; 29. ​​Connection assembly;

[0054] 231, limit assembly; 232, ring body; 233, placement slot; 234, test plate; 235, slot;

[0055] 2311, shift block; 2312, arc block; 2313, arc groove; 2314, shift groove;

[0056] 251, cover body; 252, threaded rod; 253, scraper;

[0057] 261, second guide box; 262, second nozzle; 263, second conduit;

[0058] 271, servo motor; 272, rotating part; 273, transmission mechanism; 274, fixed part;

[0059] 281, first guide box; 282, mounting plate; 283, connecting piece; 284, first conduit; 285, first nozzle;

[0060] 290, connecting hole; 291, second connecting groove; 292, shift rod; 293, retaining ring; 294, connecting rod; 295, second electromagnet; 296, connecting block; 297, connecting ring; 298, first connecting groove; 299, first electromagnet; 2991, third connecting groove. DETAILED DESCRIPTION

[0061] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] Example 1: Please refer to Figure 1 , Figure 2 and Figure 3 A test device for the corrosion resistance of an anti-corrosion coating for a wind turbine tower includes a test machine 1 and a test mechanism 2 arranged inside the test machine 1 for performing a corrosion resistance test on the anti-corrosion coating. By placing the test mechanism 2 inside the test machine 1, the leakage of corrosive gas during the corrosion resistance test is avoided, thereby avoiding pollution of the test environment or other equipment in the corrosion test site, and facilitating practical use. The test mechanism 2 includes:

[0063] The lower shell 22 is fixedly arranged on the bottom inner wall of the testing machine 1. The upper shell 21 is detachably arranged on the top of the lower shell 22. The end corners between the lower shell 22 and the upper shell 21 are provided with connecting components 29 for connecting the lower shell 22 and the upper shell 21. The interior of the lower shell 22 is provided with placement components 23 arranged at intervals.

[0064] See also Fig. 9 , Fig.10 and Fig.11 , the placement component 23 comprises:

[0065] The ring body 232 is arranged inside the lower shell 22, and the ring bodies 232 arranged at intervals are fixedly connected. The outer wall of the ring body 232 is provided with placement grooves 233 arranged in a circular array. The inner wall of the placement groove 233 is sleeved with a test plate 234. The anti-corrosion coating to be tested for corrosion resistance is coated on the upper surface and the lower surface of the test plate 234. The inner walls of both sides of the placement groove 233 are provided with a limiting assembly 231 for limiting the test plate 234. The limiting assembly 231 includes:

[0066] The arc grooves 2313 are formed on the inner walls of both sides of the through groove 233 , and the curvature of the arc grooves 2313 is consistent with the curvature of the ring body 232 .

[0067] The limiting component 231 also includes:

[0068] The arc block 2312 is sleeved in the arc groove 2313 and fits with the inner wall of the arc groove 2313, so that the arc block 2312 moves along the inner wall of the arc groove 2313. Slots 235 adapted to the arc block 2312 are provided on both sides of the test plate 234, so that the arc block 2312 is embedded in the slots 235, thereby limiting the position of the test plate 234. A first spring symmetrically arranged with respect to the center point of the arc groove 2313 is sleeved inside the arc groove 2313 and located on the side of the arc block 2312 away from the placement through groove 233, and the first spring is fixedly connected to the arc block 2312;

[0069] The shifting groove 2314 is opened on the outer wall of the ring body 232 and is connected with the arc groove 2313. The inner wall of the shifting groove 2314 is sleeved with a shifting block 2311, and the bottom of the shifting block 2311 is fixedly connected to the top of the arc block 2312. The inner wall length of the shifting groove 2314 along the length direction of the first spring is smaller than the inner wall length of the arc groove 2313 along the length direction of the first spring.

[0070] In a specific implementation, by providing the ring bodies 232 arranged at intervals and providing the limit assembly 231 on the outer wall of the ring body 232, it is convenient to fix the test plate 234 on the ring body 232 or remove the test plate 234 from the ring body 232, so as to facilitate placing the test plate 234 coated with the anti-corrosion coating for the wind turbine tower on the ring body 232, so that the test plate 234 is distributed in an annular shape, and the lower surface and the upper surface of the test plate 234 are horizontally aligned to avoid blocking the corrosive gas, so that the corrosive gas is in full contact with the anti-corrosion coating on the upper and lower surfaces of the test plate 234, and the situation in which the supported side of the test plate 234 is not in good contact with the corrosive gas during the traditional test is avoided, thereby avoiding the influence of the test accuracy due to the different contact degrees between the anti-corrosion coating and the corrosive gas, so as to improve the test accuracy;

[0071] When installing the test plate 234, the shifting block 2311 is pulled, so that the shifting block 2311 drives the arc block 2312 along the shifting groove 2314 to compress the first spring and move the arc block 2312 away from the placement groove 233. Then, the test plate 234 is placed in the placement groove 233, and the shifting block 2311 is released. Under the reverse action of the first spring, the arc block 2312 is reset and embedded in the slot 235 of the test plate 234, so as to limit the test plate 234, so that the test plate 234 is installed on the ring body 232. When the test plate 234 is removed, the shifting block 2311 is pulled to separate the arc block 2312 from the slot 235, which is convenient for actual operation.

[0072] The anti-corrosion coating of the wind turbine tower is applied to the upper and lower surfaces of the test plate 234 to facilitate contact with the corrosive gas;

[0073] The test plate 234 can be designed to fit the shape of the wind turbine tower and can be designed to be arc-shaped, so that during the corrosion resistance test, the degree of adhesion between the wind turbine tower anti-corrosion coating and the arc-shaped test plate 234 can be grasped, so as to fit the actual situation and facilitate the grasping of the corrosion resistance of the anti-corrosion coating after it is actually applied to the wind turbine tower, thereby improving the accuracy of the test. Since the anti-corrosion coating is usually applied to different objects, in order to be suitable for different objects, the test plate 234 can be designed to be a rectangular plate to fit the actual use, and only slots 235 matching the arc-shaped blocks 2312 need to be opened on both sides of the test plate 234 to avoid affecting the fixed use of the test plate 234;

[0074] The inner wall length of the shifting groove 2314 along the length direction of the first spring is smaller than the inner wall length of the arc groove 2313 along the length direction of the first spring, so that the shifting groove 2314 limits the shifting block 2311, thereby limiting the arc block 2312 to prevent the arc block 2312 from separating from the arc groove 2313.

[0075] See also Figure 2 , Figure 3 and Figure 4 The upper shell 21 and the lower shell 22 are both semi-circular in design, and the upper shell 21 and the lower shell 22 are connected by a connecting component 29 to form a ring, and both sides of the upper shell 21 and the lower shell 22 are open in design, and the openings on both sides of the lower shell 22 are provided with a rotating component 27 for connecting the lower shell 22 and the ring body 232, so that the placement component 23 can rotate in the lower shell 22, and a cleaning component 25 for cleaning the upper shell 21 and the lower shell 22 is provided at the bottom of the lower shell 22, and the cleaning component 25 and the rotating component 27 are arranged in linkage.

[0076] See also Figure 4 and Figure 5 , the connection component 29 comprises:

[0077] The first connecting groove 298 is formed at the top corner of the lower housing 22. The inner wall of the first connecting groove 298 is provided with a second connecting groove 291. The top inner wall of the second connecting groove 291 is fixed with a first electromagnet 299.

[0078] The connecting block 296 is fixedly arranged at the bottom corner of the upper shell 21 and is matched with the inner wall of the first connecting groove 298. A third connecting groove 2991 is provided on the side of the connecting block 296 close to the first electromagnet 299. The longitudinal section of the third connecting groove 2991 is convex. A connecting rod 294 extending to the outside of the third connecting groove 2991 is sleeved on the inner wall of the third connecting groove 2991. A second electromagnet 295 is fixedly arranged on the top of one end of the connecting rod 294 outside the third connecting groove 2991. The second electromagnet 295 and the first electromagnet 299 are close to each other on the same magnetic pole, and the first electromagnet 299 and the second electromagnet 295 are both arc-shaped.

[0079] The connecting ring 297 is fixedly sleeved on the side wall of one end of the connecting rod 294 located in the third connecting groove 2991, and cooperates with the stopper of the third connecting groove 2991 to limit the connecting rod 294 from being separated from the third connecting groove 2991. The side wall of one end of the connecting rod 294 located in the third connecting groove 2991 and the side of the connecting ring 297 close to the second electromagnet 295 are sleeved with a second spring, and the second spring is fixedly connected to the connecting ring 297.

[0080] The connection assembly 29 also includes:

[0081] The connecting hole 290 is opened on the inner wall of the second connecting groove 291 and passes through to the outside of the lower shell 22. The middle end of the inner wall of the connecting hole 290 is designed to protrude outward. A retaining ring 293 is sleeved on the middle end of the inner wall of the connecting hole 290. A retaining rod 292 is fixedly sleeved on the inner wall of the retaining ring 293. The retaining rod 292 extends along both ends of the inner wall of the connecting hole 290 to the inside of the second connecting groove 291 and the outside of the lower shell 22 respectively. The retaining rod 292 is located on one end side wall of the connecting hole 290 and is sleeved on one side of the retaining ring 293 close to the first electromagnet 299. A third spring is sleeved on the side.

[0082] In a specific implementation, the connecting block 296 is inserted into the first connecting groove 298. During the insertion process, the inner wall of the first connecting groove 298 squeezes the connecting rod 294, so that the connecting rod 294 moves into the third connecting groove 2991, so that the connecting ring 297 stretches the second spring. As the connecting block 296 is continuously inserted downward, the connecting rod 294 is inserted into the second connecting groove 291. At this time, under the contraction of the second spring, the insertion rod moves out of the third connecting groove 2991, thereby limiting the connecting block 296, so as to limit the connection between the upper shell 21 and the lower shell 22;

[0083] When the connecting rod 294 is inserted into the second connecting groove 291, power is supplied to the first electromagnet 299 and the second electromagnet 295 so that the connecting rod 294 tends to move downward by repulsion, so that the lower shell 22 and the upper shell 21 are close to each other, so as to ensure the sealing of the connection between the upper shell 21 and the lower shell 22, and ensure the sealing between the upper shell 21 and the rotating member 272 to avoid leakage of corrosive gas. A sealing strip can be provided between the upper shell 21 and the fixing member 274 and the lower shell 22 to improve the sealing. This is a prior art and will not be described in detail here.

[0084] When the upper shell 21 is removed, the power is cut off to the first electromagnet 299 and the second electromagnet 295. Then, the lever 292 is pressed to squeeze the connecting rod 294 to move into the third connecting groove 2991, thereby separating the connecting rod 294 from the second connecting groove 291 to facilitate the removal of the upper shell 21. By setting the third spring and the retaining ring 293, the lever 292 tends to move toward the outside of the lower shell 22, thereby avoiding hindering the connecting rod 294 from entering the second connecting groove 291.

[0085] See also Figure 3 and Figure 6 , the rotating assembly 27 comprises:

[0086] The fixing member 274 is fixedly arranged on the outer wall of the ring body 232 and extends to the outside of the lower shell 22. The outer wall of the fixing member 274 is rotatably provided with a rotating member 272. The outer wall of the rotating member 272 is fixedly connected to the opening of the lower shell 22 so that the ring body 232 is rotatably connected to the lower shell 22. The fixing member 274 is hollow in design. The inner wall of the fixing member 274 and the interior of the lower shell 22 are respectively provided with a first injection assembly 28 and a second injection assembly 26 for injecting corrosive gas.

[0087] The rotating assembly 27 also includes:

[0088] The servo motor 271 is fixed on the outer wall of the lower shell 22. The output shaft of the servo motor 271 is fixed with a rotating shaft through a coupling. The rotating shaft is rotatably connected to the lower shell 22. The side wall of the rotating shaft is provided with a transmission mechanism 273 for transmitting the fixing piece 274 and the threaded rod 252, so that the servo motor 271 drives the fixing piece 274 and the threaded rod 252 to rotate.

[0089] In the specific implementation, the servo motor 271 is started, and the output shaft of the servo motor 271 drives the rotating shaft to rotate through the coupling, and the rotating shaft drives the fixing member 274 and the threaded rod 252 to rotate through the transmission mechanism 273, thereby driving the ring bodies 232 arranged at intervals to rotate, that is, the cleaning component 25 is operated. By rotating the ring bodies 232, it is beneficial to stir the corrosive gas in the upper shell 21 and the lower shell 22, so that the corrosive gas is in full contact with the anti-corrosion coating to improve the test effect, and by rotating the ring bodies 232, when cleaning the interior of the upper shell 21 and the lower shell 22 later, it is convenient to clean the impurities, thereby improving the cleaning effect, and cooperating with the cleaning component 25, the cleaning effect is further improved, which is convenient for long-term use;

[0090] The rotating member 272 is used to prevent the upper shell 21 and the lower shell 22 from rotating when the ring body 232 rotates, which is convenient for practical use;

[0091] The transmission mechanism 273 includes a first gear and a second gear fixed on the rotating shaft and the side wall of the threaded rod 252, and a ring gear fixedly sleeved on the outer wall of the fixing member 274, and the top and bottom of the first gear are respectively engaged with the ring gear and the second gear, thereby driving the threaded rod 252 and the fixing member 274 to rotate.

[0092] See also Fig.12 and Fig.13 , the first injection assembly 28 includes:

[0093] The connecting member 283 is fixedly arranged on the side wall of the lower shell 22. A mounting plate 282 is fixedly arranged on one end of the connecting member 283 away from the lower shell 22, and the side wall of the mounting plate 282 is sleeved on the inner wall of the fixing member 274. The mounting plate 282 and the fixing member 274 are sealed. A mounting groove is provided on the side of the mounting plate 282 away from the connecting member 283. A first guide box 281 with an annular design is fixedly arranged on the inner wall of the mounting groove. A first nozzle 285 arranged in an annular array is fixedly arranged on one side of the first guide box 281 close to the ring body 232 to transport corrosive gas to the inside of the ring body 232.

[0094] The first conduit 284 is fixedly disposed on the inner side of the first guide box 281 and communicated with the interior of the first guide box 281 . One end of the first conduit 284 away from the first guide box 281 extends to the outside of the testing machine 1 .

[0095] See also Figure 8 , the second injection assembly 26 includes:

[0096] The second guide box 261 is fixedly arranged on the inner wall of the lower shell body 22 and is sleeved on the outer side of the ring body 232. The second guide box 261 is designed to be annular. The outer wall diameter of the second guide box 261 is smaller than the inner wall diameter of the scraper 253. The inner side of the second guide box 261 is fixedly provided with second nozzles 262 arranged in a circular array. The outer side of the second guide box 261 is fixedly provided with a second conduit 263 extending to the outside of the testing machine 1, and the second conduit 263 is connected to the interior of the second guide box 261.

[0097] In a specific implementation, the first conduit 284 and the second conduit 263 are connected to a corrosive gas pipeline at one end outside the test machine 1, so that the corrosive gas enters the first guide box 261 and the second guide box 261 through the first conduit 284 and the second conduit 263 respectively, and then is sprayed out through the first nozzle 285 and the second nozzle 262 respectively, so that the corrosive gas is sprayed through the inner wall and the outer wall of the ring body 232, thereby performing a corrosion resistance test on the anti-corrosion coating on the upper surface and the lower surface of the test plate 234;

[0098] In the specific design, the first nozzle 285 and the second nozzle 262 on one side of the lower shell 22 can be designed as air inlet nozzles, and the first nozzle 285 and the second nozzle 262 on the other side of the lower shell 22 remain unchanged, so that the corrosive gas enters the lower shell 22 through one side of the lower shell 22, and is discharged through the air inlet nozzle on the other side of the lower shell 22, and the corrosive gas discharged from the air inlet nozzle enters the external corrosive gas pipeline again, so that the corrosive gas circulates in the lower shell 22, and the corrosion resistance of the anti-corrosion coating is tested by the flowing corrosive gas, which is in line with the actual situation of sea breeze and other erosion of the wind turbine tower. This circulating gas circuit is a prior art and will not be elaborated here.

[0099] Example 2: Please refer to Figure 7 and Figure 8 The difference between this embodiment and the first embodiment is that the cleaning component 25 includes:

[0100] The cover body 251 is fixedly arranged at the bottom of the lower shell body 22 and is connected to the interior of the lower shell body 22. The inner walls on both sides of the cover body 251 are rotatably provided with threaded rods 252 extending to the outside of the cover body 251. The side wall of one end of the threaded rod 252 located in the cover body 251 is threadedly connected with a threaded seat. A scraper 253 is fixedly arranged on the top of the threaded seat, and the scraper 253 is annularly designed. The outer wall of the scraper 253 fits with the inner wall after the upper shell body 21 and the lower shell body 22 are connected. The inner wall of the cover body 251 fits with the side wall of the threaded seat to limit the threaded seat, so that when the threaded rod 252 rotates, the threaded seat is driven to move along the length direction of the cover body 251. The bottom inner wall of the cover body 251 is fixedly provided with a sewage pipe 24 extending to the bottom of the cover body 251, and the outer wall of the sewage pipe 24 is provided with a valve.

[0101] In a specific implementation, the threaded rod 252 is driven to rotate by the rotating assembly 27, so that the threaded rod 252 drives the threaded rod 252 to move along the inner wall of the cover body 251 during the rotation, thereby driving the scraper 253 to move along the inner walls of the upper shell 21 and the lower shell 22, so as to clean the impurities attached to the inner walls of the upper shell 21 and the lower shell 22, which is convenient for long-term use, and the cleaning water and neutral detergent can be discharged through the drain pipe 24 for subsequent use.

[0102] The present invention can design multiple test mechanisms 2 in the test machine 1 to pass different corrosive gases to perform corrosion resistance tests on the anti-corrosion coating, which is convenient for actual corrosion resistance tests. The composition of the corrosive gas can be selected according to the installation environment of the wind turbine tower, and can be salt spray gas and gas with a certain temperature and humidity, etc., which will not be elaborated here.

[0103] The servo motor 271 and the first electromagnet 299 and other electronic components of the present invention are connected to the controller and the external power supply through wires for practical control and use. This is the prior art and will not be described in detail here.

[0104] When the present invention is implemented, the box cover on the top of the test machine 1 is opened, and the upper shell 21 is separated from the lower shell 22 by the connecting component 29, so that the test plate 234 with the wind turbine tower as the base material and the test plate 234 coated with the anti-corrosion paint for the wind turbine tower are placed in the lower shell 22, and then the test plate 234 coated with the anti-corrosion paint for the wind turbine tower is placed on the side wall of the ring body 232 by the placing component 23, and then the upper shell 21 and the lower shell 22 are connected and fixed by the connecting component 29, and then the box cover of the test machine 1 is closed, and then the corrosive gas is respectively transported to the inside and outside of the ring body 232 by the first injection component 28 and the second injection component 26, so that the corrosive gas contacts the anti-corrosion paint on the upper and lower surfaces of the test plate 234, so as to perform a corrosion resistance test on the paint;

[0105] After the corrosion resistance test is completed, the box cover and the upper shell 21 are opened, and the test plate 234 can be taken out by placing the assembly 23 to facilitate the subsequent analysis of corrosion resistance. After a period of testing or when it is necessary to clean the upper shell 21 and the lower shell 22, the first injection assembly 28 and the second injection assembly 26 are connected to external pipes to transport clean water or neutral detergent to the upper shell 21 and the lower shell 22, so as to clean the impurities deposited in the upper shell 21 and the lower shell 22 and discharge them along the drain pipe 24 for long-term use.

[0106] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0107] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0108] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A test device for the corrosion resistance of anti-corrosion coatings for wind turbine towers, comprising a salt spray test chamber, characterized in that: It also includes a test mechanism set up inside the salt spray test chamber for conducting corrosion resistance tests on anti-corrosion coatings, the test mechanism includes: The lower shell is fixedly arranged on the bottom inner wall of the salt spray test chamber. The top of the lower shell is detachably provided with an upper shell. The end corners between the lower shell and the upper shell are provided with connection components for connecting the lower shell and the upper shell. The interior of the lower shell is provided with spaced placement components, and the placement components include: The ring body is arranged inside the lower shell body, and the ring bodies arranged at intervals are fixedly connected. The outer wall of the ring body is provided with placement grooves arranged in a circular array, and the inner wall of the placement groove is sleeved with a test plate. The anti-corrosion coating to be tested for corrosion resistance is coated on the upper and lower surfaces of the test plate. The inner walls of both sides of the placement groove are provided with limit assemblies for limiting the test plate, and the limit assemblies include: The arc grooves are formed on the inner walls of both sides of the through groove, and the curvature of the arc grooves is consistent with the curvature of the ring body; The limiting component also includes: The arc block is sleeved in the arc groove and fits with the inner wall of the arc groove so that the arc block moves along the inner wall of the arc groove. Slots adapted to the arc block are provided on both sides of the test plate so that the arc block is embedded in the slots, thereby limiting the test plate. A first spring symmetrically arranged with respect to the center point of the arc groove is sleeved inside the arc groove and on the side of the arc block away from the placement through groove, and the first spring is fixedly connected to the arc block; A shifting groove is provided on the outer wall of the ring body and is connected with the arc groove. A shifting block is sleeved on the inner wall of the shifting groove, and the bottom of the shifting block is fixedly connected with the top of the arc block. The inner wall length of the shifting groove along the length direction of the first spring is shorter than the inner wall length of the arc groove along the length direction of the first spring. The connection component comprises: A first connecting groove is provided at the top corner of the lower shell, a second connecting groove is provided on the inner wall of the first connecting groove, and a first electromagnet is fixedly provided on the top inner wall of the second connecting groove; A connecting block is fixedly arranged at the bottom end corner of the upper shell body and is adapted to the inner wall of the first connecting groove. A third connecting groove is provided on a side of the connecting block close to the first electromagnet. The longitudinal section of the third connecting groove is convexly designed. A connecting rod extending outside the third connecting groove is sleeved on the inner wall of the third connecting groove. A second electromagnet is fixedly arranged on the top of one end of the connecting rod located outside the third connecting groove. The second electromagnet and the first electromagnet are close to each other on the same magnetic pole, and the first electromagnet and the second electromagnet are both arc-shaped; A connecting ring is fixedly sleeved on the side wall of one end of the connecting rod located in the third connecting groove, and cooperates with the third connecting groove stopper to limit the connecting rod from being separated from the third connecting groove. A second spring is sleeved on the side wall of one end of the connecting rod located in the third connecting groove and on the side of the connecting ring close to the second electromagnet. The second spring is fixedly connected to the connecting ring.

2. A test device for the corrosion resistance of wind turbine tower anti-corrosion coating according to claim 1, characterized in that: The upper shell and the lower shell are both semi-annular in design, and the upper shell and the lower shell are connected by a connecting assembly to form a ring, and both sides of the upper shell and the lower shell are open in design, and the openings on both sides of the lower shell are provided with rotating assemblies for connecting the lower shell and the ring body, so that the placement assembly can rotate in the lower shell, and a cleaning assembly for cleaning the upper shell and the lower shell is provided at the bottom of the lower shell, and the cleaning assembly and the rotating assembly are arranged in linkage.

3. A test device for the corrosion resistance of wind turbine tower anti-corrosion coating according to claim 1, characterized in that: The connection component also includes: A connecting hole is opened on the inner wall of the second connecting groove and passes through to the outside of the lower shell body. The middle end of the inner wall of the connecting hole is designed to protrude outward. A retaining ring is sleeved on the middle end of the inner wall of the connecting hole. A retaining rod is fixedly sleeved on the inner wall of the retaining ring. The retaining rod extends along both ends of the inner wall of the connecting hole to the inside of the second connecting groove and the outside of the lower shell body respectively. The retaining rod is located on one end side wall of the connecting hole and on the side of the retaining ring close to the first electromagnet and is sleeved with a third spring.

4. A test device for the corrosion resistance of wind turbine tower anti-corrosion coating according to claim 2, characterized in that: The rotating assembly comprises: The fixing part is fixedly arranged on the outer wall of the ring body and extends to the outside of the lower shell body. The outer wall of the fixing part is rotatably provided with a rotating part. The outer wall of the rotating part is fixedly connected to the opening of the lower shell body so that the ring body and the lower shell body are rotatably connected. The fixing part is hollow in design. The inner wall of the fixing part and the interior of the lower shell body are respectively provided with a first injection assembly and a second injection assembly for injecting salt spray gas.

5. A test device for the corrosion resistance of wind turbine tower anti-corrosion coating according to claim 4, characterized in that: The cleaning component includes: The cover body is fixed at the bottom of the lower shell body and is connected to the interior of the lower shell body. The inner walls on both sides of the cover body are rotatably provided with threaded rods extending to the outside of the cover body. The side wall of one end of the threaded rod is located in the cover body and is threadedly connected with a threaded seat. A scraper is fixedly provided on the top of the threaded seat, and the scraper is annular in design. The outer wall of the scraper fits with the inner wall after the upper shell body and the lower shell body are connected. The inner wall of the cover body fits with the side wall of the threaded seat to limit the threaded seat, so that the threaded seat is driven to move along the length direction of the cover body when the threaded rod rotates. A sewage pipe extending to the bottom of the cover body is fixedly provided on the bottom inner wall of the cover body, and a valve is provided on the outer wall of the sewage pipe.

6. A test device for the corrosion resistance of wind turbine tower anti-corrosion coating according to claim 5, characterized in that: The rotating assembly also includes: The servo motor is fixed on the outer wall of the lower shell body. The output shaft of the servo motor is fixed with a rotating shaft through a coupling. The rotating shaft is rotatably connected to the lower shell body. The side wall of the rotating shaft is provided with a transmission mechanism for transmitting the fixing part and the threaded rod, so that the servo motor drives the fixing part and the threaded rod to rotate.

7. A test device for the corrosion resistance of wind turbine tower anti-corrosion coating according to claim 4, characterized in that: The first injection assembly comprises: A connecting piece is fixedly arranged on the side wall of the lower shell, a mounting plate is fixedly arranged on one end of the connecting piece away from the lower shell, and the side wall of the mounting plate is sleeved on the inner wall of the fixing piece, and a sealing design is provided between the mounting plate and the fixing piece, a mounting groove is provided on the side of the mounting plate away from the connecting piece, a first guide box with an annular design is fixedly arranged on the inner wall of the mounting groove, and a first nozzle arranged in an annular array is fixedly arranged on the side of the first guide box close to the ring body to transport salt spray gas to the inside of the ring body; The first conduit is fixedly arranged on the inner side of the first guide box and communicated with the interior of the first guide box. One end of the first conduit away from the first guide box extends to the outside of the salt spray test box.

8. A test device for the corrosion resistance of wind turbine tower anti-corrosion coating according to claim 7, characterized in that: The second injection assembly comprises: The second guide box is fixedly arranged on the inner wall of the lower shell body and sleeved on the outer side of the ring body. The second guide box is designed in an annular shape. The outer wall diameter of the second guide box is smaller than the inner wall diameter of the scraper. The inner side of the second guide box is fixedly provided with second nozzles arranged in a circular array. The outer side of the second guide box is fixedly provided with a second conduit extending to the outside of the salt spray test box, and the second conduit is connected to the interior of the second guide box.

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