Self-corrosion rate monitoring device for offshore wind power foundation

Abstract

The invention relates to an offshore wind power foundation self-corrosion rate monitoring device which comprises a supporting plate in a vertical state and a supporting plate in a horizontal state, the supporting plate and the supporting plate are in sliding connection in the vertical direction, and an elastic supporting piece used for supporting the supporting plate is arranged between the supporting plate and the supporting plate; the supporting plate is provided with a marking part used for recording the sliding distance of the supporting plate on the supporting plate. The problems that in the prior art, when an ultrasonic thickness gauge, a magnetic induction thickness gauge and other devices are used for monitoring the corrosion rate of an offshore wind power foundation, the operation difficulty is high, and the use and maintenance cost is high are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore wind power, and particularly relates to a device for monitoring the self-corrosion rate of an offshore wind power foundation. Background Art

[0002] The offshore wind power foundation plays a supporting role for the offshore wind turbine, transferring various loads (such as wind force, wave force, tidal current force, etc.) received by the wind turbine to the seabed. Its material is mainly steel.

[0003] When steel is exposed to humid air containing carbon dioxide, iron atoms will undergo an oxidation reaction with oxygen in the air to generate ferrous ions (Fe2+). The ferrous ions further react with oxygen and water in the air and are oxidized to ferric ions (Fe3+). The ferric ions combine with hydroxide ions (OH-) to form iron hydroxide. And iron hydroxide will decompose under certain conditions and finally form iron oxide, generating rust that adheres to the surface of the steel, causing the steel to be corroded. That is, after oxygen atoms enter the rust, the overall weight of the steel and the rust increases.

[0004] In the prior art, when manufacturing an offshore wind power foundation at the factory end, it is necessary to place the offshore wind power foundation in a monitoring area simulating the marine environment and use equipment such as ultrasonic thickness gauges and magnetic induction thickness gauges to detect its self-corrosion rate, so as to understand the performance parameters of the offshore wind power foundation and provide parameter support for the subsequent use and maintenance of the offshore wind power foundation.

[0005] However, when using equipment such as ultrasonic thickness gauges and magnetic induction thickness gauges to monitor the corrosion rate of an offshore wind power foundation, the operation difficulty is relatively high, and the use and maintenance costs are relatively high. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a device for monitoring the self-corrosion rate of an offshore wind power foundation, so as to solve the problems of relatively high operation difficulty and relatively high use and maintenance costs when using equipment such as ultrasonic thickness gauges and magnetic induction thickness gauges to monitor the corrosion rate of an offshore wind power foundation in the prior art.

[0007] The present invention is achieved through the following technical solutions:

[0008] A device for monitoring the self-corrosion rate of an offshore wind power foundation includes a support plate in a vertical state and a support plate in a horizontal state. The support plate is slidably connected to the support plate in the vertical direction, and an elastic support member for supporting the support plate is provided between the support plate and the support plate.

[0009] A marking portion for recording the sliding distance of the support plate on the support plate is provided on the support plate.

[0010] Further, the supporting plate includes a first supporting plate and a second supporting plate located on both sides of the supporting board, and both the first supporting plate and the second supporting plate are slidably connected to the supporting board in the vertical direction;

[0011] A pulling rope is hung on the top edge of the supporting board, and both ends of the pulling rope are fixedly connected to the first supporting plate and the second supporting plate respectively, and both sections of the pulling rope on both sides of the supporting board are in a vertical state;

[0012] The elastic support member is arranged below the first supporting plate to support the first supporting plate, and when the elastic support member is in a natural stretching state, the first supporting plate is located on the top of the supporting board, the second supporting plate is located at the bottom of the supporting board, and a counterweight portion equal to the weight of the offshore wind power foundation to be measured is arranged on the second supporting plate.

[0013] Further, a bottom plate is arranged below the supporting board, and the bottom edge of the supporting board is fixedly connected to the middle of the bottom plate;

[0014] The elastic support member is a compression spring, one end of the compression spring is fixedly connected to the bottom surface of the first supporting plate, and the other end is fixedly connected to the top surface of the bottom plate. When the compression spring is in a natural stretching state, the second supporting plate abuts against the bottom plate and the pulling rope is in a taut state.

[0015] Further, vertical chutes extending in the vertical direction are formed on both side surfaces of the supporting board, and sliders are slidably engaged in both chutes;

[0016] The two sliders are respectively fixedly connected to the first supporting plate and the second supporting plate.

[0017] Further, two pulleys are arranged on both sides of the top edge of the supporting board, the fixed ends of the two pulleys are fixedly connected to the top edge of the supporting board, and the rotation center lines of the two wheels of the two pulleys are parallel to the supporting board;

[0018] The middle of the pulling rope bypasses the two pulleys and is hung on the two wheels of the two pulleys.

[0019] Further, the marking portion includes a marking strip pasted on the side wall of the supporting board facing the second supporting plate, and scale lines uniformly arranged in the vertical direction are engraved on the marking strip.

[0020] Further, the counterweight portion includes a storage box with a hollow structure and counterweight sand contained in the storage box, and the bottom end of the storage box is fixedly connected to the top surface of the second supporting plate.

[0021] Further, a firing pin perpendicular to the supporting board is arranged outside the storage box, and the end of the firing pin facing away from the supporting board is slidably connected to the outer side wall of the storage box along the length direction of the firing pin;

[0022] The marking strip is located on the trajectory of the firing pin sliding together with the second supporting plate.

[0023] Further, a groove is formed in the top surface of the storage box, a closed chamber is formed at the bottom end of the storage box, and a sand leakage hole through which the counterweight sand passes and falls into the closed chamber is formed in the bottom surface of the groove;

[0024] A receiving piece for receiving the counterweight sand and a rotating rod parallel to the opening plane of the groove are arranged in the closed chamber. The receiving piece is parallel to the rotating rod, and one edge of the receiving piece is fixedly connected to the outer circular surface of the rotating rod. Both ends of the rotating rod are respectively inserted into and rotatably matched with the two side walls of the closed chamber;

[0025] One end of the rotating rod is connected in series with a torsion spring. One end of the torsion spring is fixedly connected to the rotating rod, and the other end is fixedly connected to the side wall of the closed chamber. When the torsion spring is in a natural extension state, the edge of the receiving piece facing away from the rotating rod extends obliquely towards the top surface of the closed chamber and extends below the sand leakage hole;

[0026] A linkage assembly is arranged between the receiving piece and the striker. When the receiving piece rotates in the closed chamber, the striker is driven to slide on the outer side wall of the storage box through the linkage assembly.

[0027] Further, the end of the rotating rod facing away from the torsion spring penetrates through the side wall of the closed chamber and extends outside the storage box. The linkage assembly includes a rack parallel to the striker and a gear meshing with the rack;

[0028] One end of the rack is fixedly connected to the end of the striker facing away from the support plate, and one side wall of the rack is slidably connected to the outer side wall of the storage box along the length direction of the rack. The gear is connected in series to the outer end of the rotating rod outside the storage box and is coaxially fixedly connected.

[0029] The beneficial effects of the present invention are as follows:

[0030] When in use, the offshore wind power foundation is placed on the pallet, and the elastic support member is used to support the pallet and the offshore wind power foundation. Under the action of the gravity of the offshore wind power foundation, the pallet slides downward on the support plate, and the elastic support member is compressed and deformed until the pallet stops moving downward. Since the offshore wind power foundation is exposed to the air and corroded, oxygen atoms in the air enter the offshore wind power foundation, increasing the weight of the offshore wind power foundation, causing the pallet to continue to move downward and increasing the deformation amount of the elastic support member.

[0031] By setting a fixed recording period, the marking part is used to record the position of the pallet on the support plate at the cut-off time point of the recording period, so that the distance between two adjacent positions is the increased deformation amount of the elastic support member within one recording period, that is, the increased weight of the offshore wind power foundation within the recording period, which is convenient for assisting in analyzing the self-corrosion rate of the offshore wind power foundation. The operation is simple and convenient, and the monitoring device is not provided with electronic components, so the use and maintenance costs are relatively low.

[0032] Other advantages, objects, and features of the present invention will be set forth in part in the following description, and in part will be obvious to those skilled in the art upon examination of the following, or may be learned from the practice of the present invention. The objects and other advantages of the present invention may be realized and obtained by the following description of the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0034] Figure 2 is an exploded view of an embodiment of the present invention;

[0035] Figure 3 is a three-dimensional structural schematic diagram of removing the counterweight part in an embodiment of the present invention;

[0036] Figure 4 is a three-dimensional structural schematic diagram of the counterweight part in an embodiment of the present invention;

[0037] Figure 5 is a planar structural schematic diagram of the counterweight part in an embodiment of the present invention;

[0038] Figure 6 is a three-dimensional structural schematic diagram of the storage box in an embodiment of the present invention;

[0039] Figure 7 is a three-dimensional structural schematic diagram of the receiving piece and the linkage assembly in an embodiment of the present invention;

[0040] Figure 8 is Figure 5 a cross-sectional view taken along line A-A in

[0041] In the figure: 1, support plate; 11, bottom plate; 12, chute; 13, slider; 14, pulley; 21, first support plate; 22, second support plate; 23, pull rope; 3, compression spring; 4, marking strip; 41, scale line; 51, storage box; 511, groove; 512, closed chamber; 513, hourglass hole; 514, guide groove; 52, rotating rod; 53, receiving piece; 54, torsion spring; 6, firing pin; 71, gear; 72, rack. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] To make the objects, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0043] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0044] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0045] In the above description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "one side" and "the other side" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, terms such as "first" and "second" are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0046] In addition, terms such as "the same" do not mean that the components are required to be absolutely the same, but there may be slight differences. The term "vertical" only means that the positional relationship between components is relatively more vertical compared to "parallel", and does not mean that the structure must be completely vertical, but may be slightly inclined.

[0047] Please refer to Figures 1-8 , the present invention provides a technical solution: an offshore wind power foundation self-corrosion rate monitoring device, including a support plate 1 in a vertical state and a support plate in a horizontal state. The support plate is slidably connected to the support plate 1 in the vertical direction, and an elastic support member for supporting the support plate is provided between the support plate and the support plate 1;

[0048] A marking portion for recording the sliding distance of the support plate on the support plate 1 is provided on the support plate.

[0049] In this solution: during use, the offshore wind power foundation is placed on the support plate, and the elastic support member is used to support the support plate and the offshore wind power foundation. Under the action of the gravity of the offshore wind power foundation, the support plate slides downward on the support plate 1, and the elastic support member is compressed and deformed until the support plate stops moving downward. Since the offshore wind power foundation is exposed to the air and corroded, oxygen atoms in the air enter the offshore wind power foundation, increasing the weight of the offshore wind power foundation, causing the support plate to continue to move downward and increasing the deformation amount of the elastic support member.

[0050] By setting a fixed recording period, the marking part is used to record the position of the pallet on the support plate 1 at the cut-off time point of the recording period, so that the distance dimension between two adjacent positions is the deformation increment of the elastic support member within one recording period, that is, the weight increment of the offshore wind power foundation within this recording period, which is convenient for assisting in analyzing the self-corrosion rate of the offshore wind power foundation. The operation is simple and convenient, and no electronic components are set in this monitoring device, so the use and maintenance costs are relatively low.

[0051] In this embodiment: The pallet includes a first pallet 21 and a second pallet 22 located on both sides of the support plate 1, and both the first pallet 21 and the second pallet 22 are slidably connected to the support plate 1 in the vertical direction;

[0052] A pulling rope 23 is hung on the top edge of the support plate 1, and both ends of the pulling rope 23 are fixedly connected to the first pallet 21 and the second pallet 22 respectively, and the two sections of the pulling rope 23 on both sides of the support plate 1 are both in a vertical state;

[0053] The elastic support member is arranged below the first pallet 21 to support the first pallet 21. When the elastic support member is in a natural stretching state, the first pallet 21 is located at the top of the support plate 1, the second pallet 22 is located at the bottom of the support plate 1, and a counterweight part equal to the weight of the offshore wind power foundation to be measured is arranged on the second pallet 22.

[0054] In this solution: The outer shapes of the first pallet 21 and the second pallet 22 are the same, so that the weights of the first pallet 21 and the second pallet 22 are equal. The pulling rope 23 is used to hang the first pallet 21 and the second pallet 22 on the support plate 1. By setting the two sections of the pulling rope 23 on both sides of the support plate 1 to be vertical, the pulling force directions of the pulling rope 23 on the first pallet 21 and the second pallet 22 are both in the vertical direction, so that the first pallet 21 and the second pallet 22 are stably hung on the support plate 1 through the pulling rope 23 when not under external force.

[0055] The counterweight part is used to balance the weight of the offshore wind power foundation, so that the pulling forces exerted by the first pallet 21 and the second pallet 22 on the pulling rope 23 are equal, eliminating the influence of the gravity of the offshore wind power foundation on the deformation of the elastic support member. Since the corrosion rate of the offshore wind power foundation is usually slow, the weight of substances such as rust generated by corrosion is relatively light compared to the weight of the offshore wind power foundation. When the elastic support member deforms due to the gravity extrusion of the offshore wind power foundation, a relatively large elastic coefficient is required for the elastic support member to reduce the volume of this device. However, the weight of substances such as rust generated by corrosion can only cause a slight deformation of the elastic support member, which is difficult to observe and record.

[0056] By setting a counterweight part to balance and offset the weight of the offshore wind power foundation, the elastic support member only needs to support the first support plate 21, offset the weight of substances such as rust generated by corrosion, and make the deformation amount of the elastic support member be the weight of substances such as rust. Therefore, an elastic support member with a relatively large elastic coefficient can be selected to facilitate observing the weight change of the rust.

[0057] In this embodiment: A bottom plate 11 is arranged below the support plate 1, and the bottom edge of the support plate 1 is fixedly connected to the middle of the bottom plate 11;

[0058] The elastic support member is a compression spring 3. One end of the compression spring 3 is fixedly connected to the bottom surface of the first support plate 21, and the other end is fixedly connected to the top surface of the bottom plate 11. When the compression spring 3 is in a natural extension state, the second support plate 22 abuts against the bottom plate 11 and the pull rope 23 is in a taut state.

[0059] In this solution: The bottom plate 11 is used to increase the contact area between the support plate 1 and the bottom surface, and improve the stability of the support plate 1. The compression spring 3 plays a flexible support role for the first support plate 21.

[0060] In this embodiment: Vertical sliding grooves 12 extending in the vertical direction are formed on both side surfaces of the support plate 1, and sliding blocks 13 are slidably fitted in the two sliding grooves 12;

[0061] The two sliding blocks 13 are respectively fixedly connected to the first support plate 21 and the second support plate 22.

[0062] In this solution: The cross-section of the sliding groove 12 is T-shaped, and the outer shape of the sliding block 13 is adapted to the sliding groove 12 to limit the shaking of the sliding block 13 in the sliding groove 12, so that the first support plate 21 and the second support plate 22 slide smoothly along the vertical direction on the support plate 1.

[0063] In this embodiment: Two pulleys 14 are arranged on both sides of the top edge of the support plate 1. The fixed ends of the two pulleys 14 are fixedly connected to the top edge of the support plate 1, and the rotation center lines of the two wheels in the two pulleys 14 are parallel to the support plate 1;

[0064] The middle of the pull rope 23 bypasses the two pulleys 14 and is hooked on the two wheels of the two pulleys 14.

[0065] In this solution: The pull rope 23 is suspended on the two wheels of the two pulleys 14. The two pulleys 14 support the pull rope 23, use the two pulleys 14 to change the pulling force direction of the pull rope 23, and the outer contours of the wheels in the two pulleys 14 protrude from both side walls of the support plate 1 to eliminate the influence of the support plate 1 on the stretching, so that the two sections of the pull rope 23 on both sides of the support plate 1 remain vertical, and the direction of the pulling force exerted by the pull rope 23 on the first support plate 21 and the second support plate 22 remains vertically stable.

[0066] In this embodiment: The marking part includes a marking strip 4 pasted on the side wall of the support plate 1 facing the second support plate 22, and scale lines 41 are engraved on the marking strip 4 and arranged uniformly in the vertical direction.

[0067] In this solution: The marking strip 4 is a thermal paper. When the thermal paper is squeezed and rubbed, heat will accumulate at the squeezed and rubbed position, causing its color to change, so as to facilitate drawing a point pattern representing the height position of the second support plate 22 on the marking strip 4. The scale lines 41 are used to represent the height values of the corresponding positions of the second support plate 22. By reading the two corresponding to the scale lines 41 of two adjacent point patterns on the marking strip 4, it is convenient to quickly obtain the increased deformation amount of the compression spring 3 during this recording period.

[0068] In this embodiment: The counterweight part includes a storage box 51 with a hollow structure and counterweight sand contained in the storage box 51. The bottom end of the storage box 51 is fixedly connected to the top surface of the second support plate 22.

[0069] In this solution: The amount of counterweight sand in the counterweight box can be increased or decreased to change the overall weight of the storage box 51, that is, the amount of counterweight sand in the storage box 51 can be adjusted according to the weight of the offshore wind power foundation, so as to facilitate the device to monitor offshore wind power foundations of different weights.

[0070] In this embodiment: A striker 6 perpendicular to the support plate 1 is arranged outside the storage box 51. One end of the striker 6 facing away from the support plate 1 is slidably connected to the outer side wall of the storage box 51 along the length direction of the striker 6;

[0071] The marking strip 4 is located on the trajectory where the striker 6 slides together with the second support plate 22.

[0072] In this solution: The striker 6 is perpendicular to the marking strip 4. When it is necessary to mark the point information of the current position of the second support plate 22 on the marking strip 4, the striker 6 is pushed to slide on the storage box 51 and approach the marking strip 4, so that the striker 6 impacts the marking strip 4. Heat accumulates due to extrusion and friction at the impacted position on the marking strip 4, and the color changes, so as to draw a point pattern on the marking strip 4 to record the height position of the second support plate 22 at this time node.

[0073] In this embodiment: A groove 511 is opened on the top surface of the storage box 51, a closed chamber 512 is opened at the bottom end of the storage box 51, and a sand leakage hole 513 for the counterweight sand to pass through and fall into the closed chamber 512 is opened on the bottom surface of the groove 511;

[0074] A receiving piece 53 for receiving counterweight sand and a rotating rod 52 parallel to the opening plane of the groove 511 are arranged in the closed chamber 512. The receiving piece 53 is parallel to the rotating rod 52, and one edge of the receiving piece 53 is fixedly connected to the outer circular surface of the rotating rod 52. The two ends of the rotating rod 52 are respectively inserted into and rotatably fitted with the two side walls of the closed chamber 512.

[0075] A torsion spring 54 is connected in series at one end of the rotating rod 52. One end of the torsion spring 54 is fixedly connected to the rotating rod 52, and the other end is fixedly connected to the side wall of the closed chamber 512. When the torsion spring 54 is in a natural extended state, the edge of the receiving piece 53 facing away from the rotating rod 52 extends obliquely towards the top surface of the closed chamber 512 and extends below the hourglass hole 513.

[0076] A linkage assembly is arranged between the receiving piece 53 and the striker 6. When the receiving piece 53 rotates in the closed chamber 512, the striker 6 is driven to slide on the outer side wall of the storage box 51 through the linkage assembly.

[0077] In this solution: The receiving piece 53 is used to receive the counterweight sand falling from the hourglass hole 513. An opening communicating the inner and outer sides of the closed chamber 512 is formed in the side wall of the storage box 51 facing away from the support plate 1. A draw box with a hollow top opening is inserted into the opening, and the draw box blocks the opening in the side wall of the storage box 51. The draw box is used to collect the counterweight sand sliding off the receiving piece 53 and can transfer and pour the collected counterweight sand into the top groove 511 of the storage box 51.

[0078] The outer circular surface of the rotating rod 52 is in contact with one side wall of the closed chamber 512. The two edges of the receiving piece 53 along the axial direction of the rotating rod 52 are respectively in contact with the other two side walls in the closed chamber 512. There is a gap between the edge of the receiving piece 53 facing away from the rotating rod 52 and the side wall of the closed chamber 512 facing away from the rotating rod 52, and this gap serves as the only channel for the counterweight sand on the receiving piece 53 to enter the bottom of the closed chamber 512. When the torsion spring 54 is in a natural extended state, the edge of the receiving piece 53 facing away from the rotating rod 52 extends obliquely towards the top surface of the closed chamber 512, so that the receiving piece 53 and the three side walls in the closed chamber 512 form a hollow structure with an open top, facilitating the storage of the counterweight sand falling from the hourglass hole 513.

[0079] During use, the weighted sand after weighing is added into the groove 511. Under the action of its own gravity, the weighted sand falls downward from the hourglass hole 513 into the closed chamber 512 and is blocked and collected by the receiving piece 53. As the amount of weighted sand on the receiving piece 53 gradually increases, under the action of the gravity of the weighted sand, the receiving piece 53 rotates forward, and the rotating rod 52 applies a torsional force to the torsion spring 54. The torsion spring 54 undergoes torsional deformation to store energy until the receiving piece 53 rotates to be inclined towards the bottom surface of the closed chamber 512, so that the weighted sand on the receiving piece 53 slides downward along the inclined surface of the receiving piece 53 and slides off the receiving piece 53 into the bottom of the closed chamber 512; the torsion spring 54 releases energy to drive the rotating rod 52 and the receiving piece 53 to rotate backward together, so that the receiving piece 53 returns to the initial position and the weighted sand is loaded again.

[0080] Moreover, when the rotating rod 52 rotates forward, it drives the striker 6 to slide on the storage box 51 close to the marking strip 4 through the linkage assembly until the striker 6 hits the marking strip 4, forming a dot pattern on the marking strip 4; when the rotating rod 52 rotates backward, it drives the striker 6 to slide on the storage box 51 away from the marking strip 4 through the linkage assembly, so as to facilitate the next impact of the striker 6 on the marking strip 4. The aperture of the hourglass hole 513 remains fixed, so that the amount of weighted sand passing through the hourglass hole 513 per unit time is fixed. When a fixed amount of weighted sand is placed on the receiving piece 53, it will rotate forward to pour the weighted sand, making the receiving piece 53 perform an intermittent reciprocating rotational motion. Therefore, the interval period is the recording period of the striker 6 on the marking strip 4.

[0081] Therefore, after the weighted sand is injected into the groove 511, the weighted sand pushes the receiving piece 53 to perform an intermittent reciprocating rotational motion in the closed chamber 512, and the striker 6 intermittently hits the marking strip 4, automatically recording the time points of multiple recording periods on the marking strip 4 at the positions of the tray on the support plate 1.

[0082] In this embodiment: One end of the rotating rod 52 facing away from the torsion spring 54 penetrates through the side wall of the closed chamber 512 and extends outside the storage box 51. The linkage assembly includes a rack 72 parallel to the striker 6 and a gear 71 meshing with the rack 72;

[0083] One end of the rack 72 is fixedly connected to one end of the striker 6 facing away from the support plate 1, and one side wall of the rack 72 is slidably connected to the outer side wall of the storage box 51 along the length direction of the rack 72. The gear 71 is strung on the outer end of the rotating rod 52 outside the storage box 51 and is coaxially fixedly connected.

[0084] In this solution: A guiding groove 514 perpendicular to the support plate 1 is formed on the outer side wall of the storage box 51, and one edge of the rack 72 is inserted into the guiding groove 514 and is in sliding fit. During use, when the receiving piece 53 rotates forward, the rotating rod 52 drives the gear 71 to rotate forward together. The gear 71 applies a thrust along the length direction of the rack 72 to the rack 72, so that the rack 72 drives the striker 6 to approach the marking strip 4 until it hits the marking strip 4. When the receiving piece 53 rotates reversely, the rotating rod 52 drives the gear 71 to rotate reversely together. The gear 71 applies a thrust along the length direction of the rack 72 to the rack 72, so that the rack 72 drives the striker 6 to move away from the marking strip 4.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A self-corrosion rate monitoring device for offshore wind power foundation, characterized in that: It comprises a support plate (1) in a vertical state and a support plate in a horizontal state, the support plate and the support plate (1) are slidably connected in a vertical direction, and an elastic support member for supporting the support plate is provided between the support plate and the support plate (1); The support plate is provided with a marking portion for recording the sliding distance of the support plate on the support plate (1).

2. The offshore wind power foundation self-corrosion rate monitoring device according to claim 1 is characterized in that: The support plate comprises a first support plate (21) and a second support plate (22) located on both sides of the support plate (1), and the first support plate (21) and the second support plate (22) are both slidably connected to the support plate (1) along a vertical direction; A pull rope (23) is hung on the top edge of the support plate (1), and the two ends of the pull rope (23) are respectively fixedly connected to the first support plate (21) and the second support plate (22), and the two sections of the pull rope (23) on both sides of the support plate (1) are in a vertical state; The elastic support member is arranged below the first support plate (21) to support the first support plate (21), and when the elastic support member is in a naturally extended state, the first support plate (21) is located at the top of the support plate (1), and the second support plate (22) is located at the bottom of the support plate (1), and a counterweight portion having a weight equal to that of the offshore wind power foundation to be tested is arranged on the second support plate (22).

3. The offshore wind power foundation self-corrosion rate monitoring device according to claim 2 is characterized in that: A bottom plate (11) is provided below the support plate (1), and the bottom edge of the support plate (1) is fixedly connected to the middle of the bottom plate (11); The elastic support member is a compression spring (3), one end of the compression spring (3) is fixedly connected to the bottom surface of the first support plate (21), and the other end is fixedly connected to the top surface of the bottom plate (11). When the compression spring (3) is in a naturally stretched state, the second support plate (22) and the bottom plate (11) are in contact with each other and the pull rope (23) is in a taut state.

4. The offshore wind power foundation self-corrosion rate monitoring device according to claim 2 is characterized in that: Both sides of the support plate (1) are provided with sliding grooves (12) extending in the vertical direction, and sliding blocks (13) are slidably fitted in the two sliding grooves (12); The two sliding blocks (13) are fixedly connected to the first support plate (21) and the second support plate (22) respectively.

5. The offshore wind power foundation self-corrosion rate monitoring device according to claim 2 is characterized in that: Two pulleys (14) are arranged on both sides of the top edge of the support plate (1), the fixed ends of the two pulleys (14) are fixedly connected to the top edge of the support plate (1), and the rotation center lines of the two wheels of the two pulleys (14) are parallel to the support plate (1); The middle part of the pull rope (23) passes around the two pulleys (14) and is hung on the two wheels of the two pulleys (14).

6. The offshore wind power foundation self-corrosion rate monitoring device according to claim 2 is characterized in that: The marking portion comprises a marking strip (4) adhered to a side wall of the support plate (1) facing the second support plate (22), and the marking strip (4) is engraved with scale lines (41) evenly arranged in a vertical direction.

7. The offshore wind power foundation self-corrosion rate monitoring device according to claim 6 is characterized in that: The counterweight part comprises a storage box (51) with a hollow structure and counterweight sand contained in the storage box (51), and the bottom end of the storage box (51) is fixedly connected to the top surface of the second support plate (22).

8. The offshore wind power foundation self-corrosion rate monitoring device according to claim 7 is characterized in that: A striker (6) perpendicular to the support plate (1) is arranged outside the storage box (51); one end of the striker (6) facing away from the support plate (1) is slidably connected to the outer wall of the storage box (51) along the length direction of the striker (6); The marking strip (4) is located on a track where the striker (6) slides along with the second support plate (22).

9. The offshore wind power foundation self-corrosion rate monitoring device according to claim 8 is characterized in that: The top surface of the storage box (51) is provided with a groove (511), the bottom end of the storage box (51) is provided with a closed chamber (512), and the bottom surface of the groove (511) is provided with an hourglass hole (513) for weighted sand to pass through and fall into the closed chamber (512); The closed chamber (512) is provided with a receiving piece (53) for receiving counterweight sand and a rotating rod (52) parallel to the opening plane of the groove (511); the receiving piece (53) is parallel to the rotating rod (52), and an edge of the receiving piece (53) is fixedly connected to the outer circumferential surface of the rotating rod (52); the two ends of the rotating rod (52) are respectively inserted into the two side walls of the closed chamber (512) and rotated together; A torsion spring (54) is serially connected to one end of the rotating rod (52), one end of the torsion spring (54) is fixedly connected to the rotating rod (52), and the other end is fixedly connected to the side wall of the closed chamber (512), and when the torsion spring (54) is in a naturally extended state, an edge of the receiving plate (53) is facing away from the rotating rod (52) and extends obliquely toward the top surface of the closed chamber (512), and extends to below the hourglass hole (513); A linkage assembly is provided between the receiving plate (53) and the striker (6). When the receiving plate (53) rotates in the closed chamber (512), the striker (6) is driven to slide on the outer wall of the storage box (51) through the linkage assembly.

10. The offshore wind power foundation self-corrosion rate monitoring device according to claim 9, characterized in that: One end of the rotating rod (52) facing away from the torsion spring (54) passes through the side wall of the closed chamber (512) and extends out of the storage box (51), and the linkage assembly includes a rack (72) parallel to the striker (6) and a gear (71) meshing with the rack (72); One end of the rack (72) is fixedly connected to one end of the striker (6) facing away from the support plate (1), and one side wall of the rack (72) is slidably connected to the outer side wall of the storage box (51) along the length direction of the rack (72), and the gear (71) is serially connected to the rotating rod (52) at one end outside the storage box (51) and is coaxially fixedly connected.

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