Pipe gallery for offshore chemical pipeline laying

Abstract

A pipe gallery for offshore chemical pipeline laying relates to a pipe gallery, a plurality of square pipe boxes (3) corresponding in head and tail are arranged at intervals above the sea surface (9), two oppositely arranged connecting square pipes (7) are arranged between every two adjacent square pipe boxes (3), two pipe cavities (13) of the adjacent two square pipe boxes (3) and the cavities (15) of the two connecting square pipes (7) located between the adjacent two square pipe boxes (3) are through, and the '' rectangle '' shaped cover plate (5) covers the two inclined waist surfaces outside the two opposite connecting square pipes (7). The application realizes the effective weight decomposition of the square pipe boxes with large self-weight by arranging a plurality of square pipe boxes corresponding in head and tail and with large self-weight at intervals above the sea surface and hanging two oppositely arranged connecting square pipes with small self-weight on the end portions of the two square pipe boxes between every two adjacent square pipe boxes, and overcomes the problem of unstable bottom plate of the hanger and difficult docking when docking on the sea surface.

Description

Technical Field

[0001] The present invention relates to a pipe gallery, in particular to a pipe gallery used for laying offshore chemical pipelines. Background Art

[0002] Pipeline galleries, or corridors for pipelines, are the primary location for centralized pipeline installations in large facilities. They consist of steel or reinforced concrete columns, beams, and trusses, and can be single-story or multi-story, accessible or inaccessible, and above or underground. In chemical and related plants, many pipelines are concentrated and laid along the perimeter of equipment or factory buildings, often suspended in the air by supports, creating a corridor-like structure. When chemical pipelines need to cross the ocean, galleries are typically laid on the seabed, though sometimes they are also erected on the shallow sea surface. In shallow waters, these installations require first erecting columns in the sea, then installing the galleries on top of the columns. Due to the turbulent sea surface, the crane used for installation can easily sway while parked at sea, making docking the galleries on top of the columns difficult. Furthermore, the galleries are heavy, often weighing over 200 tons, making lifting such heavy galleries difficult even for cranes, further complicating docking. Summary of the Invention

[0003] In order to overcome the shortcomings of the background technology, the present invention discloses a pipe gallery for laying offshore chemical pipelines, which is achieved by arranging a plurality of square pipe boxes with corresponding ends and large deadweight at intervals above the sea surface, and hanging two connecting square pipes with relatively small deadweight on the ends of the two square pipe boxes between each two adjacent square pipe boxes. The pipe gallery is formed by flipping and docking the two connecting square pipes, which effectively decomposes the weight of the square pipe boxes with large deadweight and overcomes the problem of difficult docking due to the unstable chassis of the crane during docking on the sea surface.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0005] A pipe gallery for laying offshore chemical pipelines includes the sea surface, and also includes square pipe boxes, connecting square pipes, and "冂"-shaped covers. A plurality of square pipe boxes corresponding to each other at the head and tail are arranged at intervals above the sea surface. Two relatively arranged connecting square pipes are provided between every two adjacent square pipe boxes. Connecting frames are provided at both ends of the bottom of each square pipe box. A pipe cavity is provided in each square pipe box. Sleeve pipes in the same direction as the square pipe box are provided at the tops of both ends of each pipe cavity. The connecting square pipe is of a right trapezoidal structure. A cavity is provided between the inclined waist surface and the opposite straight waist surface of the connecting square pipe, so that bevels are formed at the mouth parts of both side walls of the inclined waist surface of the connecting square pipe. A hook is provided at the bottom of one side of the straight waist surface of the connecting square pipe. A blocking strip extending downward is provided at the bottom of one side of the inclined waist surface of the connecting square pipe. A pipe body with one end flush with the mouth of the straight waist surface of the connecting square pipe is provided at the top of the cavity. The two blocking strips provided on the two relatively arranged connecting square pipes between two adjacent square pipe boxes are in contact. The straight waist surfaces of the two relatively arranged connecting square pipes between two adjacent square pipe boxes are respectively in contact with the ends of the two adjacent square pipe boxes. The hooks provided on the two relatively arranged connecting square pipes respectively hook the connecting frames provided on the two adjacent square pipe boxes and are rotatably connected to the connecting frames. The pipe bodies provided on the two relatively arranged connecting square pipes respectively are in contact with the sleeve pipes provided on the two adjacent square pipe boxes. Each part of the two sliders is slidably connected in the two sleeve pipes, and each other part of the two sliders is slidably connected in the pipe body, so that the two pipe cavities provided on the two adjacent square pipe boxes and the cavities provided on the two connecting square pipes between the two adjacent square pipe boxes are connected through. The "冂"-shaped cover covers the outer sides of the two inclined waist surfaces of the two relatively arranged connecting square pipes.

[0006] For the pipe gallery for laying offshore chemical pipelines, a plurality of upright columns are provided between the bottom of each square pipe box and the seabed.

[0007] For the pipe gallery for laying offshore chemical pipelines, lifting rings are provided on the outer side walls on both sides of each connecting square pipe on the side of the straight waist surface.

[0008] For the pipe gallery for laying offshore chemical pipelines, the connecting frame includes a connecting seat fixedly connected to the bottom of the square pipe box. Two support rods are provided at both ends of the connecting seat on the side of the end of the square pipe box. A shaft rod is provided between the ends of the two support rods.

[0009] For the pipe gallery for laying offshore chemical pipelines, the hook is hooked on the shaft rod and is rotatably connected to the shaft rod.

[0010] For the pipe gallery for laying offshore chemical pipelines, a bevel is provided at the end of the hook tongue of each hook.

[0011] For the pipe gallery for laying offshore chemical pipelines, the included angle between the inclined waist surface of the connecting square pipe of the right trapezoidal structure and the bottom surface of the connecting square pipe is 45 degrees.

[0012] For the pipe gallery for laying offshore chemical pipelines, the square pipe boxes, the connecting square pipes, and the "冂"-shaped covers are all made of steel materials.

[0013] In the pipe gallery for laying offshore chemical pipelines, support frames for supporting chemical pipelines are provided in both the pipe cavities of the square pipe boxes and the cavities of the connecting square pipes.

[0014] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0015] The pipe gallery for laying offshore chemical pipelines according to the present invention realizes the effective decomposition of the weight of the square pipe boxes with large self-weight by arranging a plurality of square pipe boxes with large self-weight and corresponding ends at intervals above the sea surface, and hanging two relatively arranged connecting square pipes with small self-weight on the ends of every two adjacent square pipe boxes. The pipe gallery is formed by the flipping and docking of the two connecting square pipes, overcoming the problem of unstable chassis of the suspension ship and difficult docking during sea docking. The structure of the present invention is reasonable and has strong practicability. According to the docking method of the present invention, the number of columns can be effectively reduced, greatly reducing the engineering quantity of building columns and saving costs, opening up a new idea for offshore docking of large square pipe galleries and having strong promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural view of the present invention;

[0017] Figure 2 It is a schematic structural view of the present invention after removing the "冂"-shaped cover plate;

[0018] Figure 3 It is a schematic internal structural view of the present invention after the square pipe box and the connecting square pipe are connected;

[0019] Figure 4 It is a three-dimensional structural view of the square pipe box of the present invention;

[0020] Figure 5 It is a three-dimensional structural view of the connecting square pipe of the present invention;

[0021] Figure 6 It is a three-dimensional structural view of the "冂"-shaped cover plate of the present invention;

[0022] Figure 7 It is a schematic structural view of the present invention when the two connecting square pipes are not flipped during installation;

[0023] Figure 8 It is a schematic structural view of the present invention when the two connecting square pipes are flipped halfway during installation;

[0024] Figure 9 It is a schematic structural view of the present invention when the two connecting square pipes are flipped completely during installation.

[0025] In the figure: 1, connecting frame; 2, column; 3, square pipe box; 4, lifting ring; 5, "冂"-shaped cover plate; 6, retaining bar; 7, connecting square pipe; 8, hook; 9, sea surface; 10, hypotenuse; 11, sleeve; 12, slider; 13, pipe cavity; 14, pipe body; 15, cavity; 16, shaft rod; 17, support rod; 18, connecting seat; 19, inclined plane; 20, cable A; 21, cable support; 22, cable B; 23, rope loop. Detailed implementation manners

[0026] The present invention can be more specifically explained through the following embodiments. The present invention is not limited to the following embodiments. The purpose of disclosing the present invention is to protect all changes and improvements within the scope of the present invention;

[0027] Combined with the attached Figures 1 to 6The pipe gallery for laying offshore chemical pipelines includes the sea surface 9, and also includes square pipe boxes 3, connecting square pipes 7 and "冂"-shaped covers 5. A plurality of square pipe boxes 3 corresponding end to end are arranged at intervals above the sea surface 9. Two oppositely arranged connecting square pipes 7 are provided between every two adjacent square pipe boxes 3. A plurality of columns 2 are provided between the bottom of each square pipe box 3 and the seabed. Connecting frames 1 are provided at both ends of the bottom of each square pipe box 3. A pipe cavity 13 is provided in each square pipe box 3. Sleeve pipes 11 in the same direction as the square pipe box 3 are provided at the tops of both ends of each pipe cavity 13. The connecting square pipe 7 is of a right trapezoidal structure. The included angle between the inclined waist surface of the right trapezoidal connecting square pipe 7 and the bottom surface of the connecting square pipe 7 is 45 degrees. A cavity 15 is provided between the inclined waist surface of the connecting square pipe 7 and the opposite straight waist surface, so that bevel edges 10 are formed at the mouth parts of both side walls of the inclined waist surface of the connecting square pipe 7. A hook 8 is provided at the bottom of the straight waist surface side of the connecting square pipe 7. A baffle 6 extending downward is provided at the bottom of the inclined waist surface side of the connecting square pipe 7. A pipe body 14 with one end flush with the mouth part of the straight waist surface of the connecting square pipe 7 is provided at the top of the cavity 15. Hoisting rings 4 are provided on the outer side walls of both sides of each connecting square pipe 7 on the straight waist surface side. The two baffles 6 provided on the two opposite connecting square pipes 7 between two adjacent square pipe boxes 3 are in contact. The straight waist surfaces of the two opposite connecting square pipes 7 between two adjacent square pipe boxes 3 are respectively in contact with the ends of the two adjacent square pipe boxes 3. The hooks 8 provided on the two opposite connecting square pipes 7 respectively hook the connecting frames 1 provided on the two adjacent square pipe boxes 3 and are rotatably connected to the connecting frames 1. The connecting frame 1 includes a connecting seat 18 fixedly connected to the bottom of the square pipe box 3. Two support rods 17 are provided at both ends of the connecting seat 18 on one side of the end of the square pipe box 3. A shaft rod 16 is provided between the ends of the two support rods 17. The hook 8 is hooked on the shaft rod 16 and is rotatably connected to the shaft rod 16. An inclined surface 19 is provided at the end of the hook tongue of each hook 8. The pipe bodies 14 provided on the two opposite connecting square pipes 7 are respectively in contact with the sleeve pipes 11 provided on the two adjacent square pipe boxes 3. Each part of the two sliders 12 is slidably connected in the two sleeve pipes 11. Each other part of the two sliders 12 is slidably connected in the pipe body 14, so that the two pipe cavities 13 provided on the two adjacent square pipe boxes 3 and the cavities 15 provided on the two connecting square pipes 7 between the two adjacent square pipe boxes 3 are connected through. The "冂"-shaped cover 5 covers the outer sides of the two inclined waist surfaces of the two opposite connecting square pipes 7. The square pipe boxes 3, the connecting square pipes 7 and the "冂"-shaped covers 5 are all made of steel. Support frames for supporting chemical pipelines are provided in the pipe cavities 13 provided in the square pipe boxes 3 and the cavities 15 provided in the connecting square pipes 7.

[0028] Implement the pipe gallery for laying offshore chemical pipelines described in the present invention. Build multiple groups of columns 2 at intervals on the sea surface 9 and apply anti-corrosion materials to their outer surfaces. Place and fixedly connect square pipe boxes 3 with anti-corrosion materials applied to their outer surfaces on the tops of each group of columns 2 respectively, so that multiple spaced square pipe boxes 3 correspond end to end. Make the sliders 12 slidingly connected in the sleeves 11 provided at one end of each adjacent pair of square pipe boxes 3 flush with one end of the mouth of the square pipe box 3 and the mouth of the square pipe box 3. Set up connecting square pipes 7 with anti-corrosion materials applied to their outer surfaces between two adjacent square pipe boxes 3. Hook the lifting ring 4 provided on one connecting square pipe 7 with a crane and lift it, so that the hook 8 provided on this connecting square pipe 7 hooks the shaft rod 16 provided at the end of one square pipe box 3 between two adjacent square pipe boxes 3 and is hung on the end of this square pipe box 3. Hook the lifting ring 4 provided on the other connecting square pipe 7 with a crane and lift it, so that the hook 8 provided on this connecting square pipe 7 hooks the shaft rod 16 provided at the end of the other square pipe box 3 between two adjacent square pipe boxes 3 and is hung on the end of this square pipe box 3. Combine with the attached Figure 7 , set up cable A20 at the top of the cable rack 21 so that cable A20 can lift the cable rack 21. Set up cables B22 on both sides of the bottom of the cable rack 21 respectively. Set up rope loops 23 at the ends of the two cables B22 respectively. Place the cable rack 21 between two square pipe boxes 3. Cross the two cables B22 so that the two rope loops 23 are respectively sleeved on the part between the retaining bars 6 and the inclined waist surfaces at the bottom of the adjacent two connecting square pipes 7 at this time. Combine with the attached Figure 8 , hook cable A20 with a crane and lift it upward. Under the support of the cable rack 21, the two crossed cables B22 make the retaining bars 6 provided on the two connecting square pipes 7 rotate relatively close to each other along an arc trajectory with the two shaft rods 16 as the axes. Combine with the attached Figure 9 , hook cable A with a crane and continuously lift it upward. The two crossed cables B22 lift the two connecting square pipes 7 until their bottom edges are in a horizontal state. At this time, the straight waist surfaces of the two connecting square pipes 7 are in contact with one end of each of the two square pipe boxes 3, and the two retaining bars 6 are also in contact with each other. Restricted by one end of each of the two square pipe boxes 3, the two retaining bars 6 cannot move upward anymore. The operators inside the two square pipe boxes 3 respectively use tools to knock the other ends of the two sliders 12 so that one ends of the two sliders 12 extend into the two pipe bodies 14 provided on the two connecting square pipes 7 to support the two connecting square pipes 7, so that the two rope loops 23 are respectively separated from the parts between the retaining bars 6 and the inclined waist surfaces provided on the adjacent two connecting square pipes 7 and the bottoms of the two connecting square pipes 7 are still in a horizontal state. At this time, the operator welds the gap between the two contacting retaining bars 6 to connect the two connecting square pipes 7 into one body. Then, use a crane to cover the "冂"-shaped cover plate 5 on the outer surfaces of the two inclined waist surfaces of the two opposite connecting square pipes 7 and weld it to complete the installation of the two connecting square pipes 7 between two adjacent square pipe boxes 3, making the pipe cavity 13 and the cavity 15 communicate. The installation of the two connecting square pipes 7 between other adjacent square pipe boxes 3 can be repeated according to the above steps.

[0029] The parts not described in detail in this invention are prior art.

Claims

1. A pipe gallery for laying offshore chemical pipelines, comprising a sea surface (9), characterized by: It also includes square pipe boxes (3), connecting square pipes (7) and "冂"-shaped covers (5). Above the sea surface (9), multiple square pipe boxes (3) corresponding end to end are arranged at intervals. Between every two adjacent square pipe boxes (3), two relatively arranged connecting square pipes (7) are provided. At both ends of the bottom of each square pipe box (3), connecting brackets (1) are provided. Inside each square pipe box (3), a pipe cavity (13) is provided. At the top of both ends of each pipe cavity (13), sleeves (11) in the same direction as the square pipe box (3) are provided. The connecting square pipe (7) is of a right trapezoidal structure. A cavity (15) is provided between the inclined waist surface and the opposite straight waist surface of the connecting square pipe (7), so that bevels (10) are formed at the openings of the two side walls of the inclined waist surface of the connecting square pipe (7). At the bottom on one side of the straight waist surface of the connecting square pipe (7), a hook (8) is provided. At the bottom on one side of the inclined waist surface of the connecting square pipe (7), a retaining bar (6) extending downward is provided. At the top of the cavity (15), a pipe body (14) with one end flush with the opening of the straight waist surface of the connecting square pipe (7) is provided. The two retaining bars (6) provided on the two relatively arranged connecting square pipes (7) between two adjacent square pipe boxes (3) are in contact. The straight waist surfaces of the two relatively arranged connecting square pipes (7) between two adjacent square pipe boxes (3) are respectively in contact with the ends of the two adjacent square pipe boxes (3). The hooks (8) provided on the two relatively arranged connecting square pipes (7) respectively hook the connecting brackets (1) provided on the two adjacent square pipe boxes (3) and are rotatably connected to the connecting brackets (1). The pipe bodies (14) provided on the two relatively arranged connecting square pipes (7) are respectively in contact with the sleeves (11) provided on the two adjacent square pipe boxes (3). Each part of the two sliders (12) is slidably connected in the two sleeves (11), and each other part of the two sliders (12) is slidably connected in the pipe body (14), so that the two pipe cavities (13) provided on the two adjacent square pipe boxes (3) and the cavities (15) provided in the two connecting square pipes (7) between the two adjacent square pipe boxes (3) are connected through; the "冂"-shaped cover (5) covers the outer parts of the two inclined waist surfaces of the two relatively arranged connecting square pipes (7); By arranging multiple square pipe boxes corresponding end to end and with a large self-weight at intervals above the sea surface, and hanging two relatively arranged connecting square pipes with a small self-weight on the ends of the two square pipe boxes between every two adjacent square pipe boxes, the pipe gallery is formed by the flipping and docking of the two connecting square pipes.

2. The pipeline gallery for laying offshore chemical pipelines according to claim 1 is characterized by: Between the bottom of each square pipe box (3) and the seabed, multiple columns (2) are provided.

3. The pipeline gallery for laying offshore chemical pipelines according to claim 1 is characterized by: On the two outer side walls of each connecting square pipe (7) on the side of the straight waist surface, lifting rings (4) are provided.

4. The pipe gallery for laying offshore chemical pipelines according to claim 1 is characterized by: The connecting bracket (1) includes a connecting seat (18) fixedly connected to the bottom of the square pipe box (3). At both ends of the connecting seat (18) on the side of the end of the square pipe box (3), two support rods (17) are provided. Between the ends of the two support rods (17), a shaft rod (16) is provided.

5. The pipe gallery for laying offshore chemical pipelines according to claim 4 is characterized by: The hook (8) is hooked on the shaft rod (16) and is rotatably connected to the shaft rod (16).

6. The pipeline gallery for laying offshore chemical pipelines according to claim 1 is characterized by: At the end of the hook tongue of each hook (8), a bevel (19) is provided.

7. The pipeline gallery for laying offshore chemical pipelines according to claim 1 is characterized by: The included angle between the inclined waist surface of the connecting square pipe (7) of the right trapezoidal structure and the bottom surface of the connecting square pipe (7) is 45 degrees.

8. The pipeline gallery for laying offshore chemical pipelines according to claim 1 is characterized by: The square pipe box (3), the connecting square pipe (7) and the "冂"-shaped cover (5) are all made of steel.

9. The pipe gallery for laying offshore chemical pipelines according to claim 1 is characterized in that: A support frame for supporting a chemical pipeline is provided in the tube cavity (13) provided in the square tube box (3) and the cavity (15) provided in the connecting square tube (7).

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