Horizontal construction process of anchor chain bridge type suction barrel

Abstract

The invention relates to a horizontal construction process of an anchor chain bridge type suction barrel, which is characterized in that the suction barrel is divided into a top barrel and a barrel body, the top barrel and the barrel body are separately constructed, the barrel body adopts a horizontal construction method, each barrel section of the barrel body is firstly constructed, the barrel sections are transversely placed on a roller frame, and the barrel sections are butted in sequence by moving the roller frame; then the cylinder sections are connected in a welded mode, butt joint operation of the horizontal cylinder body is completed, then the horizontal cylinder body is hoisted and turned over to become a vertical cylinder body, the built top cylinder is connected to the upper portion of the vertical cylinder body in a hoisted mode, welding connection is conducted, and the suction cylinder is obtained; according to the method, the barrel body and the top barrel are separately built, the efficiency can be improved, the barrel body is horizontally built, the amount of scaffolding and high-altitude welding operation can be reduced, the production efficiency and safety are improved, the welding quality can be improved, and the finished product quality of the suction barrel is improved.

Description

Technical Field

[0001] The invention relates to the field of marine engineering deep-sea equipment construction, and in particular to a horizontal construction process of an anchor chain bridge type suction cylinder. Background Art

[0002] As a type of anchoring and foundation fixing, suction cylinders have great application value in marine and port engineering, such as: (1) offshore structure mooring systems, such as single-point mooring, towing of towing platforms, ship mooring, and fixing and towing of pipelines; (2) suction anchors; (3) anti-slip piles of towing submerged platforms; (4) breakwaters; (5) platform foundations, such as the foundations of conductor frame platforms and tension leg platforms; (6) offshore wind power foundations, etc. At present, there is no very mature construction process for the construction of anchor chain bridge suction cylinders, and different construction sites use different methods for construction; the commonly used method is to build from bottom to top like building a house. Since the anchor chain bridge suction cylinder is a large suction cylinder, the bottom-to-top construction method requires a large amount of scaffolding to be built for each welding section, which is time-consuming and labor-intensive, with a long construction period, and requires a large amount of high-altitude welding operations. Not only does it have a high safety risk, but the accuracy of high-altitude welding operations is also difficult to guarantee. Summary of the invention

[0003] In order to overcome the above problems, the present invention provides a horizontal construction process of an anchor chain bridge type suction cylinder. The technical solution adopted by the present invention to solve the technical problem is:

[0004] A horizontal construction process of an anchor chain bridge type suction cylinder comprises the following steps:

[0005] Step S1: providing a square steel plate, rolling the square steel plate into a cylinder and welding it to obtain a top cylinder, and welding a lifting lug on the top cylinder;

[0006] Step S2: providing a cover plate, laying the cover plate flat, placing the top tube on the cover plate in an aligned manner and welding, turning over the welded cover plate and top tube and placing them on a cushion to obtain a cover tube;

[0007] Step S3: providing a plurality of square steel plates, rolling the square steel plates into cylinders and welding them to obtain a plurality of cylinder sections, and welding lifting ears on the cylinder sections;

[0008] Step S4: placing a supporting device in the cylinder section, and placing the cylinder section horizontally on the roller frame;

[0009] Step S5: moving the roller frame, connecting the cylinder segments to form a long cylinder body, and welding the connected cylinder segments to obtain a horizontal cylinder body;

[0010] Step S6: the horizontal cylinder body is turned over and placed upright on the cushion, and the supporting device in the cylinder section is removed to obtain a vertical cylinder body;

[0011] Step S7: hoist the cover tube onto the vertical tube body, complete the docking and weld and fix them, remove the lifting ears on the cover tube and the lifting ears on the vertical tube body, and obtain the suction tube.

[0012] Furthermore, in step S1, a supporting device is arranged in the top cylinder, and in step S2, the supporting device is removed after the top cylinder is turned over.

[0013] Furthermore, in step S2, a reinforcing rib plate is provided on the cover plate.

[0014] Furthermore, in step S2, the wire system, ROV platform and parts are installed on the cover tube, and then sandblasted and painted, and the anode is installed and then painted.

[0015] Furthermore, in step S5, after the cylinder segments are butt-jointed, a roundness correction device is provided on the inner wall of the butt-jointed position between the cylinder segments to ensure the roundness of the cylinder segments during the welding connection process; the roundness correction device is removed after welding.

[0016] Furthermore, in step S6, the turning over process of the horizontal cylinder is simulated in the modeling software to perform a force analysis, and then the horizontal cylinder is turned over and erected on the pier by using several cranes in cooperation with the lifting ears on the cylinder sections.

[0017] Furthermore, in step S4, each cylinder segment is sorted, and a force analysis is performed in the modeling software to analyze the cylinder segment that is mainly subjected to force, and the support device is arranged in the cylinder segment that is mainly subjected to force.

[0018] Furthermore, in step S5, after obtaining the horizontal barrel, fins and turning lugs are welded on the horizontal barrel.

[0019] Furthermore, in step S6, after obtaining the vertical barrel, a suction hole is opened on the lowest barrel section.

[0020] Furthermore, after step S7, there are steps of spray painting, quality inspection and weighing.

[0021] The beneficial effects of the present invention are:

[0022] The construction process divides the suction cylinder into a top cylinder and a cylinder body, which are constructed separately. The cylinder body is constructed horizontally. First, the cylinder sections of the cylinder body are constructed, and the cylinder sections are placed horizontally on a roller frame. The cylinder sections are connected in sequence by moving the roller frame, and then the cylinder sections are welded and connected to complete the docking operation of the horizontal cylinder body. Then, the horizontal cylinder body is hoisted and turned over to become a vertical cylinder body. After that, the constructed top cylinder is hoisted above the vertical cylinder body and welded to obtain a suction cylinder. The method constructs the cylinder body and the top cylinder separately, which can improve efficiency. In addition, the cylinder body is constructed horizontally, which can reduce the amount of scaffolding and high-altitude welding operations, which not only improves production efficiency and safety, but also improves welding quality and improves the quality of the finished product of the suction cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, wherein:

[0024] Figure 1 is a flow chart of the present invention;

[0025] Figure 2 It is an exploded view of the suction cylinder.

[0026] Figure number marking:

[0027] 100, cover cylinder; 101, top cylinder; 102, cover plate;

[0028] 200, vertical cylinder body; 201, cylinder section; 202, fin plate; 203, suction hole. DETAILED DESCRIPTION

[0029] In order to better understand the purpose, structure and function of the present invention, the specific embodiment of "a horizontal construction process of an anchor bridge type suction cylinder" of the present invention is further described in detail below in conjunction with the accompanying drawings.

[0030] See also Figure 1 and Figure 2 In this embodiment, the horizontal construction process of the suction cylinder includes the following steps:

[0031] Step S1: providing a square steel plate, rolling the square steel plate into a cylinder and welding it into a seamless cylinder to obtain a top cylinder 101, and welding a lifting lug on the side wall of the top cylinder 101;

[0032] Step S2: providing a cover plate 102, which is placed horizontally, and placing the top tube 101 on the cover plate 102 and welding them together. Turning over the welded cover plate 102 and the top tube 101 and placing them on a cushion to obtain the cover tube 100, which is ready for subsequent use.

[0033] Step S3: providing a plurality of square steel plates, rolling the square steel plates into cylinders and welding them into seamless cylinders to obtain a plurality of cylinder sections 201 with equal diameters, and welding lifting ears on the cylinder sections 201;

[0034] Step S4: placing a support device in the barrel section 201 to prevent the barrel section from being deformed during subsequent transportation and turning, and placing the barrel section 201 horizontally on the roller frame to keep the axis of the barrel section 201 horizontal;

[0035] Step S5: Move the roller frame to connect the cylinder segments 201 to form a long cylinder body, so that the axes of the cylinder segments 201 are located on the same straight line, and then weld the connected cylinder segments 201 to obtain a horizontal cylinder body;

[0036] Step S6: The welded horizontal barrel is turned over and placed upright on the pier by the cooperation of the crane and the lifting lug, and the supporting device in the barrel section 201 is removed to obtain the vertical barrel 200;

[0037] Step S7: The cover cylinder 100 is hoisted onto the vertical cylinder body 200 by means of a crane and lifting ears. After the docking is completed, the operator completes the welding and fixing of the cover cylinder 100 and the cylinder body 200 at high altitude through a ladder, removes the lifting ears on the cover cylinder 100 and the lifting ears on the vertical cylinder body 200, and obtains the suction cylinder.

[0038] It should be noted that the present construction method adopts a scheme of separately constructing the cylinder body and the cover cylinder 100. The cylinder body is horizontally constructed to complete low-altitude docking and welding operations. After that, the cylinder body is turned upright by the cooperation of a crane and a lifting lug. In this way, the construction of each cylinder section 201 of the cylinder body can be carried out at the same time, shortening the construction time. In addition, the horizontal construction of the cylinder body is a low-altitude operation and does not require the construction of scaffolding, further saving construction time and construction costs, and eliminating the risk of long-term high-altitude operations. In addition, welding during horizontal construction is also carried out on the ground, and the accuracy of the welding operation can be guaranteed, thereby improving the connection strength and quality of the cylinder body and the quality of the finished suction cylinder.

[0039] More specifically, in this embodiment, a support device is also provided in the top barrel 101 in step S1 to ensure that the top barrel 101 will not be deformed during the turning process, and the support device is removed after the cover plate 102 and the top barrel 101 are turned over in step S2. Reinforcing ribs are provided on the cover plate 102 in step S2 to improve the strength of the cover plate 102. After obtaining the cover barrel 100 in step S2, the wire system, ROV platform, and loose parts can be installed on the cover barrel 100 as required, and then sandblasting and spray painting are performed, and the anode is installed and then painted to obtain the required cover barrel 100.

[0040] Furthermore, in this embodiment, after the cylinder segments 201 are butt-jointed in step S5, a roundness correction device is provided on the inner wall of the butt joint between the cylinder segments 201 to ensure the roundness of the cylinder segments 201 during the welding connection process; the roundness correction device is removed after the cylinder segments 201 are welded and fixed.

[0041] More specifically, in step S6, the turning over process of the horizontal barrel is first simulated in the modeling software, and the simulation analysis process of force analysis and collision analysis is carried out. After the lifting and turning over plan is confirmed, the horizontal barrel is turned over and upright on the pier by using several cranes in cooperation with the lifting ears on the barrel section 201; in step S4, each barrel section 201 is sorted, and the force analysis is carried out in the modeling software to analyze the main force-bearing barrel section 201, and the supporting device is arranged in the main force-bearing barrel section 201, so that there is no need to arrange the supporting device in each barrel section 201, which saves the time of loading and unloading the supporting device and reduces the weight of the turning over hoisting of the horizontal barrel.

[0042] Furthermore, in the present embodiment, after obtaining the horizontal barrel in step S5, the fin plate 202 and the turning lug are welded on the horizontal barrel, and the welding and installation of the fin plate 202 are completed on the ground, which saves time and effort and can improve the welding quality of the fin plate and reduce the operation time of high-altitude welding. The turning lug assists the subsequent turning process, and after the turning is completed, the turning lug will also be removed together with the lug on the barrel section 201; after obtaining the vertical barrel 200 in step S6, the suction hole 203 is opened on the lowest barrel section 201. At this time, the lowest barrel section 201 does not need to be turned over. At this time, the suction hole 203 is set without worrying about the structural integrity of the lowest barrel section 201 being destroyed and prone to deformation.

[0043] In this embodiment, after the suction cylinder is obtained in step S7, the suction cylinder is spray-painted and marked, and after quality inspection and weighing, a finished anchor chain bridge type suction cylinder is obtained and stored in the warehouse to wait for subsequent construction operations.

[0044] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

Claims

1. A horizontal construction process of an anchor chain bridge type suction cylinder, characterized in that: The steps include: Step S1: providing a square steel plate, rolling the square steel plate into a cylinder and welding the cylinder to obtain a top cylinder (101), and welding a lifting lug on the top cylinder (101); Step S2: providing a cover plate (102), laying the cover plate (102) flat, placing the top tube (101) on the cover plate (102) in an aligned manner and welding the top tube (101), turning over the welded cover plate (102) and the top tube (101) and placing them on a cushion to obtain a cover tube (100); Step S3: providing a plurality of square steel plates, rolling the square steel plates into cylinders and welding them to obtain a plurality of cylinder sections (201), and welding lifting ears on the cylinder sections (201); Step S4: placing a supporting device in the cylinder section (201), and placing the cylinder section (201) horizontally on a roller frame; Step S5: moving the roller frame to connect the cylinder sections (201) to form a long cylinder body, and welding the connected cylinder sections (201) to obtain a horizontal cylinder body; Step S6: the horizontal cylinder body is turned over and placed upright on a cushion, and the supporting device in the cylinder section (201) is removed to obtain a vertical cylinder body (200); Step S7: hoisting the cover tube (100) onto the vertical cylinder body (200), completing docking and welding and fixing, removing the lifting ears on the cover tube (100) and the lifting ears on the vertical cylinder body (200), and obtaining a suction cylinder.

2. The horizontal construction process of the anchor chain bridge type suction cylinder according to claim 1 is characterized in that: In step S1, a supporting device is arranged in the top cylinder (101), and in step S2, the supporting device is removed after the top cylinder (101) is turned over.

3. The horizontal construction process of the anchor chain bridge type suction cylinder according to claim 1 is characterized in that: In step S2, a reinforcing rib plate is provided on the cover plate (102).

4. The horizontal construction process of the anchor chain bridge type suction cylinder according to claim 3 is characterized in that: In step S2, the cover tube (100) is also installed with a wire system, an ROV platform and spare parts, and then sandblasted and sprayed with paint, and then the anode is installed and then repainted.

5. The horizontal construction process of the anchor chain bridge type suction cylinder according to claim 1 is characterized in that: In step S5, after the cylinder segments (201) are butt-jointed, a roundness correction device is provided on the inner wall of the butt-jointed position between the cylinder segments (201) to ensure the roundness of the cylinder segments (201) during the welding connection process; the roundness correction device is removed after welding.

6. The horizontal construction process of the anchor chain bridge type suction cylinder according to claim 1 is characterized in that: In step S6, the turning over process of the horizontal cylinder is simulated in the modeling software to perform a force analysis, and then the horizontal cylinder is turned over and erected on the pier by using several cranes in cooperation with the lifting ears on the cylinder section (201).

7. The horizontal construction process of anchor chain bridge type suction cylinder according to claim 6 is characterized in that: In step S4, each of the cylinder sections (201) is sorted, and a force analysis is performed in a modeling software to analyze the cylinder section (201) that is mainly subjected to force, and the support device is arranged in the cylinder section (201) that is mainly subjected to force.

8. The horizontal construction process of anchor chain bridge type suction cylinder according to claim 1 is characterized in that: In step S5, after obtaining the horizontal barrel body, fin plates (202) and turning lugs are welded on the horizontal barrel body.

9. The horizontal construction process of anchor chain bridge type suction cylinder according to claim 1 is characterized in that: In step S6, after obtaining the vertical cylinder body (200), a suction hole (203) is opened on the bottom cylinder section (201).

10. The horizontal construction process of the anchor chain bridge type suction cylinder according to claim 9 is characterized in that: After step S7, there are steps of spray painting, quality inspection and weighing.

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