Tower crane arrangement and assembly method suitable for large FPSO auxiliary construction

Abstract

The invention discloses a tower crane arrangement and assembly method suitable for large FPSO auxiliary construction. The method comprises the following steps that the coverage range of tower crane equipment is determined according to construction requirements; the center position of the tower crane on the FPSO is determined according to the coverage range; the center of the tower crane frame coincides with the center position of the tower crane, and the tower crane frame is installed on the FPSO; and a tower crane cantilever is mounted on the tower crane frame. According to the tower crane method, the tower crane equipment is arranged and supported on the FPSO, effective support can be provided for construction assistance of FPSO building and a large amount of connection debugging work in the later period of module integration by means of reasonable arrangement of the tower crane equipment, and then occupation of site track crane resources and floating crane resources in an existing method is avoided; the flexibility of FPSO building and connection debugging is enhanced, the construction efficiency is effectively improved, and the construction cost is reduced.

Description

Technical Field

[0001] The invention belongs to the field of offshore platform engineering, and in particular relates to a tower crane arrangement and assembly method suitable for auxiliary construction of a large FPSO. Background Art

[0002] In the prior art, FPSO is an offshore floating production, storage and offloading device that integrates production, storage and unloading. It consists of two major parts: the upper module and the hull. The upper module completes the processing of crude oil, while the hull is responsible for storing qualified crude oil. During the construction and subsequent connection and commissioning of FPSO, it is often necessary to use construction resources such as floating cranes, crawler cranes, and gantry cranes. As the scale of FPSO becomes larger and larger, the demand and requirements for the above resources are also getting higher and higher, and the occupation of these resources has also greatly increased the construction cost of FPSO.

[0003] Therefore, a tower crane arrangement and assembly method suitable for auxiliary construction of large FPSO is provided to solve the above-mentioned problems. Summary of the invention

[0004] In order to solve the problem mentioned in the background technology that the assembly of a large FPSO tower crane consumes a lot of resources and has high technical requirements, a tower crane arrangement and assembly method suitable for auxiliary construction of a large FPSO is provided to solve the above problem.

[0005] To achieve the above-mentioned purpose, the specific technical scheme of the tower crane arrangement and assembly method suitable for auxiliary construction of large FPSO of the present invention is as follows: A tower crane arrangement and assembly method suitable for auxiliary construction of a large FPSO comprises the following steps: S1. Determine the coverage of tower crane equipment according to construction requirements; S2. Determine the center position of the tower crane on the FPSO according to the coverage range; S3, aligning the center of the tower crane frame with the center position of the tower crane, and installing the tower crane frame on the FPSO; S4. Install the tower body and tower crane cantilever on the tower crane frame.

[0006] Furthermore, the coverage of tower crane equipment is determined according to construction requirements, including: Determine the construction assistance requirements from bow to stern; Determine the lifting capacity of the tower crane according to the weight of the cargo it lifts; Determine the coverage of tower crane equipment based on lifting capacity and construction assistance requirements.

[0007] Furthermore, the lifting capacity of the tower crane is determined based on the weight of the cargo it is lifting, including: Determine the load at the center of the tower crane based on the weight of the cargo hoisted by the tower crane; The lifting capacity of the tower crane is calculated based on the load at the center of the tower crane.

[0008] Further, after determining the load at the center of the tower crane according to the weight of the cargo hoisted by the tower crane, the method further includes: According to the load at the center of the tower crane, the rooting position of the tower crane frame is determined.

[0009] The rooting locations are connected using connecting beams.

[0010] Furthermore, at least two rooting positions are provided, the number of connecting beams is not less than the number of rooting positions, and any two rooting positions are connected by the connecting beams.

[0011] Furthermore, the number of connecting beams is equal to the number of rooting positions, and both ends of any connecting beam are connected to the rooting positions.

[0012] Furthermore, both ends of any connecting beam are connected to adjacent rooting positions, and a plurality of connecting beams can form any plane figure.

[0013] Furthermore, a cross support is additionally provided on the tower crane frame.

[0014] Furthermore, before determining the center position of the tower crane on the FPSO according to the coverage range, it also includes: The number of tower cranes required is determined, and the number of tower cranes is set to at least one.

[0015] Furthermore, after the tower body and the tower crane cantilever are installed on the tower crane frame, the method further includes: Install the remaining tower cranes at different center positions accordingly.

[0016] The tower crane arrangement and assembly method suitable for auxiliary construction of large FPSO of the present invention has the following advantages: the tower crane method can achieve construction assistance for FPSO construction and provide effective support for a large number of connection and debugging works in the later stage of module integration by arranging and supporting the tower crane equipment on the FPSO and utilizing the reasonable arrangement of the tower crane equipment, thereby avoiding the occupation of crawler crane resources and floating crane resources on the site by the existing method, enhancing the flexibility of FPSO construction and connection and debugging, effectively improving construction efficiency and reducing construction costs.

[0017] A large-scale FPSO equipment of the present invention has the following advantages: during the construction and subsequent connection and debugging of the FPSO, it is often necessary to use construction resources such as floating cranes, crawler cranes, and gantry cranes. By determining the range and center position of the tower crane, the tower crane is selected to be installed at a suitable position on the large-scale FPSO, thereby reducing the demand for construction resources and further reducing the occupation of tower crane resources and construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A flow chart of a tower crane arrangement and assembly method applicable to the auxiliary construction of a large FPSO provided in the first embodiment of the present invention; Figure 2 A flow chart of a tower crane arrangement and assembly method applicable to the auxiliary construction of a large FPSO provided in the second embodiment of the present invention; Figure 3 A flowchart for determining the coverage of a tower crane provided in the second embodiment of the present invention; Figure 4 A flow chart for determining the hoisting capacity of a tower crane provided in the second embodiment of the present invention; Figure 5 A top view of a tower crane frame of the present invention; Figure 6 A top view of another partial tower crane frame of the present invention; Figure 7 It is a schematic diagram of the large FPSO structure of the present invention.

[0019] Description of the markings in the figure: 1. Tower crane cantilever; 2. Tower body; 3. Tower crane frame; 31. Rooting position; 32. Connecting beam; 4. FPSO ontology. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0021] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0022] Please refer to the attached Figure 1 To Attachment Figure 7 The present invention describes a tower crane arrangement and assembly method suitable for auxiliary construction of a large FPSO.

[0023] Embodiment 1: This embodiment provides a tower crane arrangement and assembly method suitable for auxiliary construction of large FPSOs, such as Figure 1 As shown, the method comprises the following steps: S11. Determine the coverage of the tower crane equipment according to construction requirements; S12. Determine the center position of the tower crane on the FPSO according to the coverage range; S13, aligning the center of the tower crane frame 3 with the center position of the tower crane, and installing the tower crane frame 3 on the FPSO; S14, installing the tower body 2 and the tower crane cantilever 1 on the tower crane frame 3.

[0024] The tower crane method arranges and supports the tower crane equipment on the FPSO and utilizes the reasonable arrangement of the tower crane equipment to provide construction assistance for the FPSO construction and provide effective support for a large number of connection and debugging work in the later stage of module integration, thereby avoiding the occupation of site crane resources and floating crane resources by the existing method, enhancing the flexibility of FPSO construction and connection and debugging, effectively improving construction efficiency and reducing construction costs.

[0025] Embodiment 2: This embodiment provides a tower crane arrangement and assembly method suitable for auxiliary construction of large FPSOs, such as Figure 2 As shown, the method comprises the following steps: S21, determining the number of tower cranes required, and setting the number of tower cranes to at least one; S22. Determine the coverage of the tower crane equipment according to construction requirements; S23. Determine the center position of the tower crane on the FPSO according to the coverage range; S24, aligning the center of the tower crane frame 3 with the center position of the tower crane, and installing the tower crane frame 3 on the FPSO; S25, installing the tower body 2 and the tower crane cantilever 1 on the tower crane frame 3; S26. Install the remaining tower cranes at different center positions accordingly.

[0026] Since construction sites usually involve large equipment and the coverage of a single tower crane is usually relatively fixed and small, it is necessary to design multiple tower cranes to complete the construction work. In addition, different tower cranes can be of the same specifications or of different specifications. Workers can install different tower cranes in different central locations according to actual needs to adapt to different operating modes.

[0027] Furthermore, if Figure 3 As shown, step S21, determining the coverage range of the tower crane equipment according to the construction requirements, specifically includes: S211. Determine the construction assistance requirements within the range from bow to stern; S212, determining the lifting capacity of the tower crane according to the weight of the cargo lifted by the tower crane; S213. Determine the coverage of tower crane equipment based on lifting capacity and construction assistance requirements.

[0028] It should be noted that the coverage range of the tower crane equipment determined according to construction needs mentioned in step S21 means that during the construction process of a large FPSO, there may be a need for construction assistance from the bow to the stern. Therefore, in step S211, the staff needs to reasonably determine the coverage range of the tower crane based on the characteristics and actual needs of the FPSO involved; the lifting capacity of the tower crane determined according to the weight of the cargo hoisted by the tower crane mentioned in step S212 means that in different construction areas, the size and weight of the cargo to be hoisted are also different, and the weight of the cargo to be hoisted needs to be counted. The lifting capacity of the selected tower crane should be able to cover the lifting needs of most cargo. Therefore, in actual operations, the specifications of different tower cranes are different.

[0029] Furthermore, if Figure 4 As shown, step S212, determining the lifting capacity of the tower crane according to the weight of the cargo lifted by the tower crane, comprises: S2121. Determine the load at the center of the tower crane according to the weight of the cargo hoisted by the tower crane; S2122. Calculate the lifting capacity of the tower crane based on the load at the center of the tower crane.

[0030] In order to ensure the stability of the tower crane, it is necessary to use the principles of theoretical mechanics to calculate the load at the center according to the weight of the hoisted cargo, so as to ensure the safety of the tower body 2 and avoid the tower crane collapse accident.

[0031] Furthermore, if Figure 4 As shown, after determining the load at the center of the tower crane according to the weight of the cargo hoisted by the tower crane, it also includes: S2123. Determine the rooting position 31 of the tower crane frame 3 according to the load at the center position of the tower crane.

[0032] S2124 , connecting the rooting positions 31 using the connecting beams 32 .

[0033] It should be noted that, in the present embodiment, the staff first calculates the lifting capacity of the tower crane according to the load at the center of the tower crane, and then determines the rooting position 31 of the tower crane frame 3; in other embodiments, the rooting position 31 of the tower crane frame 3 may be first determined according to the load at the center of the tower crane, and then the lifting capacity of the tower crane may be calculated; in other words, the order of the above steps S2122 and S2123 may be reversed without affecting the installation of the tower crane.

[0034] Specifically, the tower crane foundation design combined with the current status of the structure mentioned in step S2123 and step S2124 means that the location of the tower crane rooting should take into account the current status of the existing structure on the FPSO, and give priority to the location with good foundation support conditions that can meet the load during the tower crane construction process, so as to reduce the need to strengthen and transform the existing structure. At the same time, the tower crane rooting position 31 should be considered to be set above a certain height to reduce the cantilever length of the tower body 2 and better meet the tower crane's cargo lifting needs.

[0035] Further, at least two rooting positions 31 are provided, the number of connecting beams 32 is not less than the number of rooting positions 31, and any two rooting positions 31 are connected by connecting beams 32. The connecting beams 32 are connected to any two rooting positions 31 to improve the strength of the entire tower body 2. In addition, the rooting positions 31 are connected by connecting beams 32 that are more than the number of rooting positions 31, thereby further strengthening the strength of the tower body 2.

[0036] Furthermore, the number of connecting beams 32 is equal to the number of rooting positions 31, and both ends of any connecting beam 32 are connected to the rooting positions 31. Keeping the number of connecting beams 32 consistent with the rooting positions 31 makes it convenient for staff to check while ensuring the stability of the strength of the tower body 2.

[0037] Furthermore, both ends of any connecting beam 32 are connected to adjacent rooting positions 31, and multiple connecting beams 32 can form any plane figure. By connecting adjacent rooting positions 31 with connecting beams 32, the strength of the tower body 2 can be ensured at a relatively low cost. Multiple connecting beams 32 can form any plane figure to ensure that the connecting beams 32 form a closed loop as a whole, thereby providing a certain strength of lateral support for the tower body 2, and further ensuring the stability of the tower body 2.

[0038] Specifically, Figure 5The figure shows the connection mode of the connecting beams 32 at different rooting positions 31 on the tower crane frame 3. The fourth frame (from left to right, the counting principle is the same below) is the center position, which is used to set the tower body 2. Since the center position is usually subject to a larger and more concentrated load, the number of connecting beams 32 is greater than the number of rooting positions 31, and every two rooting positions 31 are connected with a connecting beam 32, so as to ensure the stability of the tower body 2. The tower body 2 is located on the fourth frame, and can also be located on the connecting beam 32. For the third frame and the fifth frame on both sides of the center position, the load they receive is usually smaller than that of the center position. Therefore, there is no need to set the frame connecting beam 32 as in the fourth position, and the number of connecting beams 32 can be appropriately reduced. For example, in this embodiment, the transverse connecting beam 32 is cancelled and only the longitudinal connecting beam 32 is retained. In this way, the production cost of the tower crane frame 3 is reduced on the basis of ensuring the stability of the tower body 2; as the frame moves away from the center position of the tower body 2, the load it receives becomes smaller and smaller. Therefore, taking the first and second frames as examples, the number of connecting beams 32 and rooting positions 31 is the same, both of which are set to 4. Since the load borne is small, the staff can set the connection method arbitrarily, and only needs to ensure the strength of the frame.

[0039] Optionally, for the small tower body 2, Figure 6 Different tower crane frame 3 settings are given, specifically, Figure 6 The setting method is based on Figure 5 The fourth frame setting is improved. Since the tower body 2 is small and cannot be installed on the tower crane frame 3, the rooting position 31 must be set inside the frame rather than on the side of the tower crane frame 3. Therefore, a cross support is additionally provided on the tower crane frame 3. In this embodiment, the cross support is a part of the tower crane frame 3, that is, the cross support and the tower crane frame 3 are integrally formed and provided, and can also be a welded support, which is not specifically limited here. The rooting position 31 is located on the cross support, and the connecting beams 32 are respectively connected to the adjacent rooting positions 31. The tower body 2 is correspondingly provided on the connecting beam 32 (the connecting beam 32 is located below the tower body 2, Figure 6 The improvement of the above structure can further improve the support strength.

[0040] This embodiment also provides a large FPSO equipment, such as Figure 7 As shown, the large-scale FPSO equipment includes a tower crane, and utilizes the above-mentioned tower crane arrangement and assembly method suitable for auxiliary construction of large-scale FPSO.

[0041] Specifically, the large FPSO equipment includes an FPSO body 4 and a tower crane, the tower crane includes a tower crane cantilever 1, a tower body 2 and a tower crane frame 3. The large FPSO equipment utilizes the above-mentioned tower crane arrangement and assembly method suitable for auxiliary construction of large FPSO to install the tower crane at a suitable position of the FPSO body 4.

[0042] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A tower crane arrangement and assembly method suitable for auxiliary construction of large FPSO, characterized in that: The following steps are involved: S1. Determine the coverage of tower crane equipment according to construction requirements; S2. Determine the center position of the tower crane on the FPSO according to the coverage range; S3, aligning the center of the tower crane frame with the center position of the tower crane, and installing the tower crane frame on the FPSO; S4. Install the tower body and tower crane cantilever on the tower crane frame.

2. The tower crane arrangement and assembly method suitable for large FPSO auxiliary construction according to claim 1 is characterized in that: The coverage of tower crane equipment is determined according to construction requirements, including: Determine the construction assistance requirements from bow to stern; Determine the lifting capacity of the tower crane according to the weight of the cargo it lifts; Determine the coverage of tower crane equipment based on lifting capacity and construction assistance requirements.

3. The tower crane arrangement and assembly method suitable for large FPSO auxiliary construction according to claim 2 is characterized in that: The lifting capacity of the tower crane is determined according to the weight of the cargo hoisted by the tower crane, including: Determine the load at the center of the tower crane based on the weight of the cargo hoisted by the tower crane; The lifting capacity of the tower crane is calculated based on the load at the center of the tower crane.

4. The tower crane arrangement and assembly method suitable for large FPSO auxiliary construction according to claim 3 is characterized in that: After determining the load at the center of the tower crane based on the weight of the cargo hoisted by the tower crane, it also includes: According to the load at the center of the tower crane, determine the rooting position on the tower crane frame; The rooting locations are connected using connecting beams.

5. The tower crane arrangement and assembly method suitable for large FPSO auxiliary construction according to claim 4 is characterized in that: At least two rooting positions are provided, the number of connecting beams is not less than the number of rooting positions, and any two rooting positions are connected by the connecting beams.

6. The tower crane arrangement and assembly method suitable for large FPSO auxiliary construction according to claim 5 is characterized in that: The number of connecting beams is equal to the number of rooting positions, and both ends of any connecting beam are connected to the rooting positions.

7. The tower crane arrangement and assembly method for large FPSO auxiliary construction according to claim 6 is characterized in that: Both ends of any connecting beam are connected to adjacent rooting positions, and a plurality of connecting beams can enclose any plane figure.

8. The tower crane arrangement and assembly method for large FPSO auxiliary construction according to claim 6 is characterized in that: Additional cross supports are provided on the tower crane frame.

9. The tower crane arrangement and assembly method suitable for large FPSO auxiliary construction according to claim 1, characterized in that: Before determining the center position of the tower crane on the FPSO based on the coverage, it also includes: The number of tower cranes required is determined, and the number of tower cranes is set to at least one.

10. The tower crane arrangement and assembly method suitable for large FPSO auxiliary construction according to claim 8, characterized in that: After installing the tower body and tower crane cantilever on the tower crane frame, it also includes: Install the remaining tower cranes at different center positions accordingly.

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