Underwater anode block structure and mounting method thereof

Abstract

The invention provides an underwater anode block structure and an installation method thereof.The underwater anode block structure comprises an anode block, the anode block is composed of an anode block body and two connecting parts arranged at the two ends of the anode block body respectively, and the two connecting parts are symmetrically distributed on the edges of the two sides of the anode block body with the central axis of the anode block body as the reference; the connecting part comprises an L-shaped fixing part of which the end part is connected with the anode block body, and an inserting part arranged at the other end of the L-shaped fixing part. Through the staggered connecting parts and the inserting parts on the connecting parts, the anode block can be fixed in the two corresponding butt joint seats on the steel pipe column by utilizing the impact force generated by the dead weight when the anode block descends, the underwater welding operation is not needed, the installation process is simplified, the construction difficulty and cost are reduced, meanwhile, the anode block is simple to replace, and the replacement efficiency is improved. And the old anode block can be easily pulled out and replaced by a new anode block only by applying enough tension to the anode block.

Description

Technical Field

[0001] The invention relates to the field of anode block installation, and in particular to an underwater anode block structure and an installation method thereof. Background Art

[0002] The steel pipe pile foundation used in offshore wind power generation is often exposed to extreme corrosion environments, especially in splash zones and water level fluctuation zones. In order to protect these structures from corrosion, sacrificial anodes are usually used as cathodic protection measures. At present, there are two main ways to install sacrificial anodes: underwater welding and flange. Although underwater welding can directly fix the anode on the structure, it is difficult and costly to operate, especially when the anode block reaches the end of its service life and needs to be replaced, which involves underwater cutting and welding, which not only increases the complexity and cost, but also may damage the original anti-corrosion coating, resulting in accelerated corrosion of the steel pipe pile and the conductor frame. Although the flange installation method can avoid these problems, the sacrificial anode protection device must be installed before piling, which can easily cause the flange bolts to loosen during the piling process, making it impossible to fix the sacrificial anode protection device, or even detach from the steel pipe pile or conductor frame, thereby losing its protective effect. Therefore, an underwater anode block structure and its installation method are proposed to solve the above problems. Summary of the invention

[0003] The main purpose of the present invention is to provide an underwater anode block structure and an installation method thereof, so as to solve the problem of inconvenience in installing anode blocks underwater.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: an underwater anode block structure, including an anode block, the anode block is composed of an anode block body and two connecting parts respectively arranged at both ends of the anode block body, the two connecting parts are symmetrically distributed at the edges of both sides of the anode block body with the central axis of the anode block body as a reference, and the connecting part includes an L-shaped fixing part whose end is connected to the anode block body, and a plug-in part arranged at the other end of the L-shaped fixing part.

[0005] In the preferred embodiment, it also includes two docking seats installed at the protective position, and respectively correspond to the plug-in parts of the two connecting parts. The plug-in end of the plug-in part is a cone, and a conical groove matched with the plug-in part is provided in the docking seat. The top of the conical groove is open for inserting the plug-in part, and an opening for accommodating the L-shaped fixing part is provided on the side wall of the top.

[0006] In a preferred embodiment, the surface of the plug-in portion and the inner wall surface of the tapered groove are both roughened.

[0007] In a preferred embodiment, a sealing capsule is further provided in the conical groove, and a colloid for enhancing connection is encapsulated in the sealing capsule.

[0008] In a preferred embodiment, ribs are provided at the corners of the L-shaped fixing portion and at the corners connected to the anode block body.

[0009] The method includes: S1. Weld the docking seat to the outer wall of the steel pipe column in advance according to the installation position of the anode block, and set a corresponding mark on the top of the steel pipe column; S2, then complete the installation of the steel pipe column; S3. Then lower the anode block along the wall of the steel pipe column according to the marked position until its two plug-in parts are embedded in the conical groove in the docking seat by the impact force generated by the deadweight when the anode block descends.

[0010] In the preferred embodiment, in step S3, the anode block is lowered to the installation location through the anode block installation device, the anode block installation device is composed of two semicircular embracing parts that can embrace the steel pipe column, the semicircular embracing part includes two semicircular plates distributed up and down, a plurality of connecting plates connecting the two are arranged between the two semicircular plates, a ball mounting seat is arranged on the inner side of the connecting plate, and a contact ball is rotatably arranged on the inner side of the ball mounting seat, when the two semicircular embracing parts embrace the semicircular embracing parts, the contact ball can contact the outer wall surface of the steel pipe column, and the outer sides of both ends of the two semicircular plates are provided with docking plates connecting the two, which are used for the two semicircular embracing parts to be docked and installed by bolts, and the two semicircular plates are provided with corresponding multiple mounting grooves for installing the anode block therein, and a fixing seat is provided at the mounting groove, and a hydraulic plug through which the telescopic end can penetrate is provided on the fixing seat, and a pin hole corresponding to the hydraulic plug is provided on the anode block body of the anode block.

[0011] In the preferred embodiment, it also includes a lowering mechanism arranged above the steel pipe column for lowering the anode block installation device, the lowering mechanism includes two semicircular pipe clamps that embrace the steel pipe column, a plurality of hoisting mechanisms are arranged on the top of the semicircular pipe clamps, and grooves are also arranged thereon for the lifting cables of the hoisting mechanisms to pass through, and the top of the anode block installation device is provided with lifting ears corresponding to the number of hoisting mechanisms.

[0012] In the preferred embodiment, in step S1, a butt joint guide structure is further welded to the outside of the steel pipe column, the butt joint guide structure is composed of two symmetrically distributed side guide plates, the side guide plates include a vertical guide plate and an inclined guide plate arranged on the top of the vertical guide plate, and the butt joint guide structure is in a Y shape with a gap provided inside; A guide plug-in plate matching the internal gap of the docking guide structure is arranged on the inner side of one of the semicircular embracing parts. The bottom end of the guide plug-in plate is lower than the plug-in part at the bottom of the anode block and is provided with a guide cone head.

[0013] In the preferred solution, the specific installation method of the anode block is: S31, installing the lowering mechanism on a steel pipe column located above the sea surface; S32, placing the anode block to be installed into the installation slot of the anode block installation device and fixing it with a hydraulic latch, then installing the anode block installation device on the steel pipe column according to the mark and below the lowering mechanism, so that the hoisting cable of the hoisting mechanism on the lowering mechanism is connected to the corresponding lifting lug; S33, lowering the anode block installation device through the hoisting mechanism, and when passing through the docking guide structure, contacting it through the guide plug plate, adjusting the docking accuracy between the anode block and the docking seat, and then adjusting the lowering speed according to the required impact force, so that the two plug-in parts of the anode block are embedded in the corresponding docking seat; S34, retract the hydraulic latch to release the connection between the anode block installation device and the anode block, then lift the anode block installation device above the water surface through the hoisting mechanism, and remove the two.

[0014] The present invention provides an underwater anode block structure and an installation method thereof. Through staggered connection parts and plug-in parts thereon, the impact force generated by the deadweight of the anode block when it descends can be utilized to fix it in two corresponding docking seats on the steel pipe column. No underwater welding operation is required, which simplifies the installation process, reduces the construction difficulty and cost. At the same time, the replacement operation of the anode block is simple, and the old anode block can be easily pulled out and replaced with a new one by applying sufficient pulling force thereto. In addition, the matching design of the plug-in part and the conical groove, plus the conductive epoxy resin flowing out after the sealing capsule in the conical groove ruptures, not only enhances the connection strength between the anode block and the steel pipe column, but also ensures good conductive performance. At the same time, one or more anode blocks can be disassembled and assembled through the anode block installation device and the lowering mechanism, thereby improving the disassembly and assembly efficiency. This solution improves the convenience, reliability and maintenance efficiency of underwater anode block installation, and reduces construction risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 is a front view of the anode block structure of the present invention; Figure 2 It is a three-dimensional diagram of the anode block structure of the present invention; Figure 3 is a cross-sectional view of the docking seat structure of the present invention; Figure 4 It is a cross-sectional view of the connection structure between the docking seat and the sealing capsule of the present invention; Figure 5 This is a structural diagram of the steel pipe column, the docking guide structure and the docking seat connection of the present invention; Figure 6 This is a structural diagram of the connection between the steel pipe column, the docking guide structure, the anode block and the docking seat of the present invention; Figure 7This is a structural diagram of the connection between the steel pipe column, the lowering mechanism and the anode block installation device of the present invention; Figure 8 It is a structural diagram of the anode block installation device of the present invention; Fig. 9 This is an exploded structural diagram of the anode block installation device of the present invention; Fig.10 It is an exploded view of the anode block installation device and the anode block connection structure of the present invention; In the figure: anode block 1; anode block body 10; pin hole 100; connecting part 11; L-shaped fixing part 110; plug-in part 111; docking seat 2; conical groove 200; opening 201; sealing capsule 202; steel pipe column 3; docking guide structure 4; side guide plate 40; vertical guide plate 401; oblique guide plate 402; anode block mounting device 5; semicircular embracing part 50; semicircular plate 500; connecting plate 501; ball mounting seat 502; contact ball 503; docking plate 504; mounting groove 505; fixing seat 506; hydraulic latch 507; lifting ear 508; lowering mechanism 6; semicircular pipe clamp 601; hoisting mechanism 602; through groove 603; suspension cable 7. DETAILED DESCRIPTION

[0016] Example 1 like Figure 1-4 As shown, an underwater anode block structure includes an anode block 1, which is composed of an anode block body 10 and two connecting parts 11 respectively arranged at both ends of the anode block body 10, the two connecting parts 11 are symmetrically distributed at the edges of both sides of the anode block body 10 with the central axis of the anode block body 10 as a reference, and the connecting part 11 includes an L-shaped fixing part 110 whose end is connected to the anode block body 10, and a plug-in part 111 arranged at the other end of the L-shaped fixing part 110, wherein the anode block body 10, the L-shaped fixing part 110 and the plug-in part 111 are integrally formed.

[0017] It also includes two docking seats 2 installed at the protective position, which are fixed in advance at the protective position of the steel pipe column 3 by welding, and correspond to the plug-in parts 111 of the two connecting parts 11 respectively. The plug-in end of the plug-in part 111 is a cone, and a conical groove 200 matched with the plug-in part 111 is provided in the docking seat 2. The top of the conical groove 200 is open for inserting the plug-in part 111, and an opening 201 for accommodating the L-shaped fixing part 110 is provided on the side wall of the top.

[0018] In the present embodiment, by staggering the two connecting parts 11, it is convenient for the anode block 1 to descend along the outer wall of the steel pipe column 3 and for the two plug-in parts 111 to be embedded in the corresponding conical grooves 200, while the two connecting parts 11 of the traditional coaxial design cannot be inserted from top to bottom into the corresponding docking seat 2. When the two connecting parts 11 of the anode block 1 are embedded in the corresponding docking seat 2, the docking seat 2 is utilized to fix the anode block 1, and at the same time, the impact force generated during descent is utilized to tightly connect the two, so that the anode block 1 can be installed without underwater welding.

[0019] In the preferred embodiment, the surface of the plug-in portion 111 and the inner wall surface of the conical groove 200 are both roughened. The roughening treatment can be specifically performed by one of sandblasting, mechanical grinding, chemical etching, laser etching and electrochemical polishing. The roughening treatment can effectively enhance the friction force at the connection between the two, and the impact force generated during descent can make the two tightly connected.

[0020] In the preferred embodiment, a sealing capsule 202 is also provided in the conical groove 200, and a colloid for enhancing the connection is wrapped in the sealing capsule 202, wherein the colloid may be a conductive epoxy resin, and the sealing capsule 202 is an aluminum foil film. It should be noted that the conductive epoxy resin is an epoxy resin containing silver powder, copper powder or other conductive materials, which is a prior art and therefore will not be described in detail here.

[0021] With such a design, when the plug-in portion 111 is embedded in the conical groove 200 by the impact force during descent, the aluminum foil film is broken through, causing the conductive epoxy resin inside to flow out to the contact surface of the two, thereby enhancing the connection strength between the two. At the same time, by using conductive epoxy resin and aluminum foil film, the conductivity between the two is not affected.

[0022] In a preferred embodiment, ribs 112 are provided at the corners of the L-shaped fixing portion 110 and at the corners connected to the anode block body 10 . The ribs 112 are fixed by welding, thereby effectively enhancing the structural strength of the corners.

[0023] Example 2 Further illustrate with reference to Example 1, Figure 5-10 The present embodiment provides a method for installing an underwater anode block structure, the method comprising: S1. Weld the docking seat 2 to the outer wall of the steel pipe column 3 in advance according to the installation position of the anode block 1, and set a corresponding mark on the top of the steel pipe column 3; S2, then complete the installation of the steel pipe column 3; S3, then lower the anode block 1 along the wall of the steel pipe column 3 according to the marked position until its two plug-in parts 111 are embedded in the tapered groove 200 in the docking seat 2 by the impact force generated by the deadweight of the anode block 1 when it descends.

[0024] In a preferred embodiment, in step S3, the anode block 1 is lowered to the installation location by the anode block installation device 5. The anode block installation device 5 in this embodiment can simultaneously install a plurality of anode block installation devices 5 that are equidistantly distributed in an annular pattern.

[0025] The anode block installation device 5 is composed of two semicircular embracing parts 50 that can embrace the steel pipe column 3. The semicircular embracing part 50 includes two semicircular plates 500 distributed up and down. A plurality of connecting plates 501 that connect the two are arranged between the two semicircular plates 500. The connecting plate 501 is fixed between the two semicircular plates 500 by welding. A ball mounting seat 502 is fixedly installed on the inner side of the connecting plate 501. A contact ball 503 is rotatably arranged on the inner side of the ball mounting seat 502. When the two semicircular embracing parts 50 embrace the semicircular embracing parts 50, the contact ball 503 can contact the outer wall surface of the steel pipe column 3, thereby effectively reducing the friction force when the anode block installation device 5 slides on the outer wall surface of the steel pipe column 3, avoiding scratching of the anti-corrosion coating on the outer wall surface.

[0026] In addition, butt-jointing plates 504 are welded to the outer sides of both ends of the two semicircular plates 500 to connect the two semicircular embracing parts 50 through bolt butt-jointing installation. The two semicircular plates 500 are provided with corresponding multiple mounting grooves 505 for mounting the anode blocks 1 therein. The mounting grooves 505 are staggered with the connecting plates 501 to avoid mutual interference.

[0027] A fixing seat 506 is provided at the mounting groove 505, and the fixing seat 506 consists of two mounting plates symmetrically arranged at the edges of the mounting groove 505, and a hydraulic pin 507 whose telescopic end can penetrate it is fixedly installed on one of the mounting plates of the fixing seat 506, and holes for the mounting plates to pass through are provided on both mounting plates of the fixing seat 506, and a pin hole 100 corresponding to the hydraulic pin 507 is provided on the anode block body 10 of the anode block 1, so that when the anode block 1 is placed in the mounting groove 505, the telescopic end of the hydraulic pin 507 can be passed through the pin hole 100 to achieve its fixation and detachment, and then a plurality of anode blocks 1 arranged in a ring can be lowered to the installation position along the outer wall surface of the steel pipe column 3 through the anode block installation device 5.

[0028] In the preferred embodiment, it also includes a lowering mechanism 6 disposed above the steel pipe column 3 for lowering the anode block installation device 5 .

[0029] The lowering mechanism 6 includes two semicircular pipe clamps 601 that embrace the steel pipe column 3. The joints of the two semicircular pipe clamps 601 are fixed by bolts. A plurality of hoisting mechanisms 602 are arranged on the top of the semicircular pipe clamps 601, and a through groove 603 is also arranged thereon for the hoisting cable 7 of the hoisting mechanism 602 to pass through. The top of the anode block mounting device 5 is welded with lifting ears 508 corresponding to the number of the hoisting mechanisms 602.

[0030] When in use, the lifting and lowering control of the anode block installation device 5 can be achieved by retracting and extending the hoisting mechanism 602. At the same time, the suspension cable 7 has a certain flexibility, so that the anode block installation device 5 can be rotated to a certain extent on the steel pipe column 3, thereby meeting the precision adjustment during docking.

[0031] In the preferred embodiment, in step S1, a docking guide structure 4 is further welded to the outside of the steel pipe column 3, and the docking guide structure 4 is composed of two symmetrically distributed side guide plates 40, and the side guide plate 40 includes a vertical guide plate 401 and an oblique guide plate 402 arranged on the top of the vertical guide plate 401, and the oblique guide plate 402 is fixed to the vertical guide plate 401 by welding, and the docking guide structure 4 is in a Y shape with a gap inside; A guide plug-in plate 51 matching the internal gap of the docking guide structure 4 is welded to the inner side of one of the semicircular embracing parts 50. The guide plug-in plate 51 has no contact with the outer wall of the steel pipe column 3. The bottom end of the guide plug-in plate 51 is lower than the plug-in part 111 at the bottom of the anode block 1, and a guide cone head is provided to facilitate the guide plug-in plate 51 to contact with the guide plug-in plate 51 before the guide plug-in plate 51 during the descent process, and the guiding function can be achieved through the contact between the guide cone head and the inclined guide plate 402.

[0032] When in use, the mark set above the steel pipe column 3 can be used for rough positioning, and the contact between the guide plug-in plate 51 and the docking guide structure 4 can achieve the effect of precise positioning.

[0033] It should be noted that the length of the docking guide structure 4 can be determined according to the impact force required when the anode blocks 1 are docked.

[0034] In the preferred embodiment, the specific installation method of the anode block 1 is: S31, installing the lowering mechanism 6 onto the steel pipe column 3 located above the sea surface; S32, placing the anode block 1 to be installed into the installation slot 505 of the anode block installation device 5 and fixing it with the hydraulic latch 507, then installing the anode block installation device 5 on the steel pipe column 3 according to the mark and below the lowering mechanism 6, so that the hoisting cable 7 of the hoisting mechanism 602 on the lowering mechanism 6 is connected to the corresponding lifting lug 508; S33, lowering the anode block installation device 5 through the hoisting mechanism 602, and when passing through the docking guide structure 4, the guide plug plate 51 contacts it, and the docking accuracy of the anode block 1 and the docking seat 2 is adjusted, and then the lowering speed is adjusted according to the required impact force, so that the two plug-in parts 111 of the anode block 1 are embedded in the corresponding docking seat 2; S34, retract the hydraulic latch 507 to release the connection between the anode block installation device 5 and the anode block 1, then lift the anode block installation device 5 above the water surface through the hoisting mechanism 602, and remove the two.

[0035] It should be noted that when the anode block 1 needs to be replaced, the anode block installation device 5 can be lowered to the anode block 1 and connected to it, and then the hoisting mechanism 602 on the lowering mechanism 6 applies sufficient force to pull it out of the docking seat 2.

[0036] In addition, the anode block installation device 5 in this embodiment can selectively disassemble and assemble one or more anode blocks 1 .

[0037] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An underwater anode block structure, comprising an anode block (1), characterized in that: The anode block (1) is composed of an anode block body (10) and two connecting parts (11) respectively arranged at two ends of the anode block body (10), the two connecting parts (11) being symmetrically distributed at two side edges of the anode block body (10) with the central axis of the anode block body (10) as a reference, and the connecting part (11) comprising an L-shaped fixing part (110) whose end is connected to the anode block body (10), and a plug-in part (111) arranged at the other end of the L-shaped fixing part (110).

2. The underwater anode block structure according to claim 1, characterized in that: It also comprises two docking seats (2) installed at the protection position and corresponding to the plug-in parts (111) of the two connecting parts (11), the plug-in end of the plug-in part (111) is a cone, and a conical groove (200) matching the plug-in part (111) is provided in the docking seat (2), the top of the conical groove (200) is open and used for inserting the plug-in part (111), and an opening (201) for accommodating the L-shaped fixing part (110) is provided on the side wall of the top.

3. The underwater anode block structure according to claim 2, characterized in that: The surface of the plug-in portion (111) and the inner wall surface of the tapered groove (200) are both roughened.

4. The underwater anode block structure according to claim 3, characterized in that: A sealing capsule (202) is also provided in the conical groove (200), and a colloid for enhancing connection is encapsulated in the sealing capsule (202).

5. An underwater anode block structure according to any one of claims 2 to 4, characterized in that: Ribs (112) are provided at the corners of the L-shaped fixing portion (110) and at the corners connected to the anode block body (10).

6. A method for installing an underwater anode block structure according to claim 5, characterized in that: The method includes: S1. Welding the docking seat (2) to the outer wall surface of the steel pipe column (3) in advance according to the installation position of the anode block (1), and setting a corresponding mark on the top of the steel pipe column (3); S2, then complete the installation of the steel pipe column (3); S3, then lower the anode block (1) along the wall of the steel pipe column (3) according to the marked position until the two plug-in parts (111) thereof are embedded in the conical groove (200) in the docking seat (2) by the impact force generated by the deadweight of the anode block (1) when it descends.

7. The method for installing an underwater anode block structure according to claim 6 is characterized in that: In step S3, the anode block (1) is lowered to the installation position through the anode block installation device (5), and the anode block installation device (5) is composed of two semicircular embracing parts (50) that can embrace the steel pipe column (3). The semicircular embracing part (50) includes two semicircular plates (500) distributed up and down, and a plurality of connecting plates (501) are arranged between the two semicircular plates (500) to connect the two semicircular plates. A ball mounting seat (502) is arranged on the inner side of the connecting plate (501), and a contact ball (503) is rotatably arranged on the inner side of the ball mounting seat (502). When the two semicircular embracing parts (50) embrace the semicircular embracing part (50), the contact ball (503) is rotatably arranged on the inner side of the ball mounting seat (502). The beads (503) can contact the outer wall surface of the steel pipe column (3). The outer sides of both ends of the two semicircular plates (500) are provided with docking plates (504) for connecting the two semicircular embracing parts (50) through bolts. The two semicircular plates (500) are provided with corresponding multiple installation grooves (505) for installing the anode block (1) therein. The installation grooves (505) are provided with fixing seats (506). The fixing seats (506) are provided with hydraulic pins (507) through which the telescopic ends can penetrate. The anode block body (10) of the anode block (1) is provided with pin holes (100) corresponding to the hydraulic pins (507).

8. The method for installing an underwater anode block structure according to claim 7, characterized in that: The device also includes a lowering mechanism (6) disposed above the steel pipe column (3) for lowering the anode block installation device (5), the lowering mechanism (6) including two semicircular pipe clamps (601) encircling the steel pipe column (3), a plurality of hoisting mechanisms (602) being disposed on the top of the semicircular pipe clamps (601), and a through groove (603) for the hoisting cable (7) of the hoisting mechanism (602) to pass through being disposed thereon, and the top of the anode block installation device (5) is provided with lifting ears (508) corresponding to the number of the hoisting mechanisms (602).

9. The method for installing an underwater anode block structure according to claim 8, characterized in that: In step S1, a butt joint guide structure (4) is further welded to the outside of the steel pipe column (3), the butt joint guide structure (4) being composed of two symmetrically distributed side guide plates (40), the side guide plates (40) comprising a vertical guide plate (401) and an inclined guide plate (402) arranged on the top of the vertical guide plate (401), and the butt joint guide structure (4) being in a Y shape with a gap provided inside; A guide plug-in plate (51) adapted to the internal gap of the docking guide structure (4) is provided on the inner side of one of the semicircular embracing portions (50); the bottom end of the guide plug-in plate (51) is lower than the plug-in portion (111) at the bottom of the anode block (1) and is provided with a guide cone head.

10. The method for installing an underwater anode block structure according to claim 9, characterized in that: The specific installation method of the anode block (1) is as follows: S31, installing the lowering mechanism (6) onto the steel pipe column (3) located above the sea surface; S32, placing the anode block (1) to be installed in the installation groove (505) of the anode block installation device (5) and fixing it with a hydraulic latch (507), then installing the anode block installation device (5) on the steel pipe column (3) according to the marking and positioning it below the lowering mechanism (6), so that the lifting cable (7) of the hoisting mechanism (602) on the lowering mechanism (6) is connected to the corresponding lifting lug (508); S33, lowering the anode block installation device (5) through the hoisting mechanism (602), and when passing through the docking guide structure (4), contacting it through the guide plug plate (51), adjusting the docking accuracy between the anode block (1) and the docking seat (2), and then adjusting the lowering speed according to the required impact force, so that the two plug-in parts (111) of the anode block (1) are embedded in the corresponding docking seat (2); S34, retract the hydraulic latch (507) to release the connection between the anode block installation device (5) and the anode block (1), then lift the anode block installation device (5) above the water surface by means of the hoisting mechanism (602), and then remove the two.

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