Foundation for a flare tower for offshore vessels and method of installation

Abstract

The application discloses a flare tower base of a marine vessel, which comprises a base panel, a base web, an anti-tilting rib plate and a combined elbow plate, the base panel, the base web and the anti-tilting rib plate are assembled to form an equilateral triangle structure, the combined elbow plate is arranged on each outer angle of the equilateral triangle in a fan-shaped structure, and the equilateral triangle structure and the combined elbow plate form an integral whole and are fixed on a main deck of the marine vessel through a flare tower main support pipe. The flare tower base of the marine vessel and the installation method can ensure that the structural strength meets the dynamic load of the flare tower during the operation of the marine vessel, optimize the structural form and angle of the flare tower base, effectively transfer the dynamic load of the flare tower to the hull structure, avoid fatigue strength damage of the base structure of the flare tower caused by the dynamic load of the flare tower, and optimize the structural size and form of the flare tower base in combination with the structural features of the main deck, so that the rigidity and stability of the base structure are improved.

Description

Technical Field

[0001] This invention relates to a flare tower base for an offshore vessel and its installation method. Background Technology

[0002] During the construction of offshore vessels, towering flare towers, reaching heights of tens of meters, are crucial equipment. When ships are engaged in oil extraction, flammable gases are emitted, primarily methane and propane. Directly releasing these gases into the atmosphere would cause severe environmental pollution. Furthermore, these gases can float around the ship and accumulate, potentially igniting at a certain concentration and causing an explosion, posing a significant threat to the safety of the ship and its crew. Currently, a simple and economical solution to this problem is to install a flare tower on the ship, with burners at the top. These gases are directed to the burners and burned off with an open flame, ensuring the safety of the ship and its personnel and minimizing atmospheric pollution. Pollution; the size and height of the flare tower are determined based on the ship's oil extraction capacity and the sea conditions and wind direction requirements of the operating area. The load on the flare tower base, which plays a supporting and fixing role, is also extremely complex, and the requirements for its strength, rigidity and stability are also high. Therefore, it is particularly important to adopt a reasonable structural form to ensure that the strength of the base structure meets the dynamic load generated by the flare tower when the ship is operating or sailing, and to effectively transfer these loads to the hull structure, avoiding fatigue strength failure of the base structure caused by the dynamic load of the flare tower. At the same time, the size and form of the flare tower base structure are optimized in combination with the characteristics of the main deck structure to improve the rigidity and stability of the base structure. Summary of the Invention

[0003] The purpose of this invention is to provide a flare tower base for offshore vessels that has a novel structural form, reasonable arrangement, good rigidity and stability, and meets the functional requirements.

[0004] The technical solution adopted by the present invention to achieve the above objectives is: a flare tower base for an offshore vessel, comprising a base panel (1), a base web (2), an anti-tilting rib plate (3), and a combined elbow plate (4). The base panel (1), the base web (2), and the anti-tilting rib plate (3) are assembled to form an equilateral triangle structure. Each side of the equilateral triangle structure is assembled from the base panel (1), the base web (2), and the anti-tilting rib plate (3). The combined elbow plate (4) is arranged in a fan-shaped structure on each outer corner of the equilateral triangle. The equilateral triangle structure and the combined elbow plate (4) form an integral whole and are fixed to the main deck (8) of the ship by the flare tower main support pipe (5).

[0005] The equilateral triangle structure has openings at its three corners, and the main support pipe (5) of the torch tower is inserted into the openings for fixation.

[0006] The base web (2) is provided with a light-reducing hole (9).

[0007] The base web (2) is provided with a perforated reinforcing rib (6) at the lightening hole (9).

[0008] The main support pipe (5) of the torch tower and the base web plate (2) are provided with a hard point key hole (7).

[0009] Another technical solution adopted by the present invention to achieve the above objectives is: a method for installing a flare tower base on an offshore vessel, comprising the following steps: a. Based on the requirements of the torch tower size, shape and installation location, design the form and size of the torch tower base, and determine the number of combined elbow plates (4) in the equilateral triangle structure assembly method and arrange them in a fan shape to assemble with the equilateral triangle structure. According to the size of the torch tower main support pipe (5), leave openings at the three corners of the equilateral triangle structure, and use the torch tower main support pipe (5) insertion method to weld and fix the torch tower base. b. Based on the dynamic load generated by the flare tower on the base during ship navigation and operation, determine the form and size of the flare tower base. Align the flare tower base web plate (2) and the combined elbow plate (4) with the strong structure of the ship's main deck (8). Assemble the base panel (1), base web plate (2) and anti-tilting rib plate (3) in an equilateral triangle structure. After the combined elbow plate (4) is arranged in a fan shape and assembled with the equilateral triangle structure into a whole, perform an overall strength check of the flare tower base structure. Under the condition of meeting the strength requirements, the base web plate (2) is opened with a lightening hole to achieve the lightweighting of the base. It is also provided with a hole-filled reinforcing rib (6) to prevent stress concentration at the hole and deformation of the base. A hard point keyhole (7) is provided at the intersection of the flare tower main support pipe (5) and the base web plate (2), which is conducive to dispersing the stress generated by the hard point here and avoiding damage to the flare tower main support pipe (5). c. Conduct a strength check on the main deck structure of the ship in the area where the flare tower base is located to ensure that the total structural strength of the area meets the relevant requirements of the specifications.

[0010] This invention discloses a flare tower base and installation method for an offshore vessel. While ensuring that the structural strength meets the dynamic load generated by the flare tower during ship operation, the invention optimizes the structural form and angle of the flare tower base and effectively transfers the dynamic load to the hull structure, avoiding fatigue strength damage to the base structure caused by the dynamic load of the flare tower. At the same time, the invention optimizes the structural dimensions and form of the flare tower base in combination with the structural characteristics of the main deck to improve the rigidity and stability of the base structure. Attached Figure Description

[0011] Figure 1 This is the front view of a flare tower base for an offshore vessel according to the present invention. Figure 1 .

[0012] Figure 2This is the front view of a flare tower base for an offshore vessel according to the present invention. Figure 2 .

[0013] Figure 3 yes Figure 2 AA view.

[0014] Figure 4 This is a side view of the flare tower base of an offshore vessel according to the present invention.

[0015] Figure 5 This is a top view of the flare tower base of an offshore vessel according to the present invention.

[0016] In the diagram: 1. Base panel; 2. Base web; 3. Anti-tilting rib plate; 4. Combined elbow plate; 5. Torch tower main support pipe; 6. Perforated reinforcing rib; 7. Hard spot keyhole; 8. Ship main deck; 9. Lightening hole. Implementation

[0017] like Figures 1 to 5As shown, the flare tower base of an offshore vessel includes a base panel 1, a base web 2, anti-tilting ribs 3, and a combined elbow plate 4. The base panel 1, base web 2, and anti-tilting ribs 3 are assembled to form an equilateral triangle structure. Each side of the equilateral triangle structure is formed by assembling the base panel 1, base web 2, and anti-tilting ribs 3. The combined elbow plate 4 is arranged in a fan-shaped structure at each outer angle of the equilateral triangle. The equilateral triangle structure and the combined elbow plate 4 form a whole and are fixed to the main deck 8 of the ship via the flare tower main support pipe 5. Openings are provided at the three corners of the equilateral triangle structure, and the flare tower main support pipe 5 is inserted into these openings for fixation. Lightening holes 9 are provided on the base web 2. Nine perforated reinforcing ribs 6 are provided, and a hard-point keyhole 7 is provided at the intersection of the main support pipe 5 of the flare tower and the web plate 2 of the base. The installation method of the flare tower base of the offshore vessel of the present invention includes the following steps: a. According to the requirements of the size, shape and installation position of the flare tower, the form and size of the flare tower base are initially designed, and the number of combined elbow plates 4 are determined according to the assembly method of the equilateral triangle structure. They are arranged in a fan shape and assembled with the equilateral triangle structure. At the same time, openings are left on the equilateral triangle structure according to the size of the main support pipe 5 of the flare tower to facilitate the flare tower to be welded and fixed to the equilateral triangle structure base by insertion, which is conducive to improving the overall rigidity and stability of the flare tower; b. According to the flare tower during ship navigation and operation, To determine the form and dimensions of the flare tower base under dynamic loads, the alignment of the flare tower base web plate 2 and the combined elbow plate 4 with the strong structure of the ship's main deck 8 facilitates the transfer of the flare tower base structural load to the hull structure, preventing fatigue damage to the base caused by the flare tower. The base panel 1, base web plate 2, and anti-tilting rib plate 3 are assembled into an equilateral triangle structure. The combined elbow plate 4 is arranged in a fan shape and assembled with the equilateral triangle structure to form a whole. Afterwards, the overall strength of the flare tower base structure is checked. While meeting strength requirements, the base web plate 2 is provided with lightening holes 9 to achieve lightweighting of the base, and reinforced ribs 6 are provided to prevent stress concentration at the openings and subsequent base deformation. A hard point keyhole 7 is provided at the intersection of the main support pipe 5 of the flare tower and the web plate 2 of the base. This helps to disperse the stress generated by the hard point and avoid damage to the main support pipe 5 of the flare tower. c. The strength of the main deck structure in the area where the flare tower base is located is checked to ensure that the total structural strength of the area meets the relevant requirements of the specifications. Based on the final check results, the form of the flare tower base is optimized again to achieve a novel form, reasonable layout, beautiful appearance, good stability, high rigidity and strength, and to meet the requirements of equipment use. It also forms an integral part with the hull structure, effectively transferring the dynamic load of the flare tower and participating in the local strength of the hull structure, thereby improving the stability and service life of the flare tower.

Claims

1. A flare tower pedestal for a marine vessel, characterised in that: The system includes a base panel (1), a base web (2), an anti-tilting rib (3), and a combined elbow plate (4). The base panel (1), the base web (2), and the anti-tilting rib (3) are assembled to form an equilateral triangle structure. Each side of the equilateral triangle structure is assembled from the base panel (1), the base web (2), and the anti-tilting rib (3). The combined elbow plate (4) is arranged in a fan shape at each outer corner of the equilateral triangle. The equilateral triangle structure and the combined elbow plate (4) form a whole and are fixed to the main deck (8) of the ship by the main support pipe (5) of the torch tower.

2. The flare tower base of an offshore vessel according to claim 1, characterized in that: The equilateral triangle structure has openings at its three corners, and the main support pipe (5) of the torch tower is inserted into the openings for fixation.

3. The flare tower base of an offshore vessel according to claim 1, characterized in that: The base web (2) is provided with a light-reducing hole (9).

4. The flare tower base of an offshore vessel according to claim 3, characterized in that: The base web (2) is provided with a perforated reinforcing rib (6) at the lightening hole (9).

5. The flare tower base of an offshore vessel according to claim 1, characterized in that: The main support pipe (5) of the torch tower and the base web plate (2) are provided with a hard point key hole (7).

6. A method for installing a flare tower base on an offshore vessel according to claim 1, characterized in that, Includes the following steps: a. Based on the requirements of the torch tower size, shape and installation location, design the form and size of the torch tower base, and determine the number of combined elbow plates (4) in the equilateral triangle structure assembly method and arrange them in a fan shape to assemble with the equilateral triangle structure. According to the size of the torch tower main support pipe (5), leave openings at the three corners of the equilateral triangle structure, and use the torch tower main support pipe (5) insertion method to weld and fix the torch tower base. b. Based on the dynamic load generated by the flare tower on the base during ship navigation and operation, determine the form and size of the flare tower base. Align the flare tower base web plate (2) and the combined elbow plate (4) with the strong structure of the ship's main deck (8). Assemble the base panel (1), base web plate (2) and anti-tilting rib plate (3) in an equilateral triangle structure. After the combined elbow plate (4) is arranged in a fan shape and assembled with the equilateral triangle structure into a whole, perform an overall strength check of the flare tower base structure. Under the condition of meeting the strength requirements, the base web plate (2) is opened with a lightening hole to achieve the lightweighting of the base. It is also provided with a hole-filled reinforcing rib (6) to prevent stress concentration at the hole and deformation of the base. A hard point keyhole (7) is provided at the intersection of the flare tower main support pipe (5) and the base web plate (2), which is conducive to dispersing the stress generated by the hard point here and avoiding damage to the flare tower main support pipe (5). c. Conduct a strength check on the main deck structure of the ship in the area where the flare tower base is located to ensure that the total structural strength of the area meets the relevant requirements of the specifications.

Images