A fairing installation method

Abstract

The present invention discloses a method for installing a fairing, and the installation steps are as follows: Open a hole in the outer hull plate of the ship, and then pass the cylinder body of the thruster base through the hole and weld it to the outer hull plate; Weld a plurality of transverse partitions to the outer hull plate, and weld steel gaskets on the transverse sides of the plurality of transverse partitions respectively; Install the fairing bottom plate on the cylinder body of the thruster base, and then weld the fairing bottom plate to the transverse partitions and weld the cylinder body of the thruster base to the outer hull plate; Install the outer side plate of the fairing and weld it to the transverse partitions, the fairing bottom plate and the outer hull plate respectively; Install the outer end plate of the fairing and weld it to the transverse partitions, the fairing bottom plate, the outer side plate of the fairing and the outer hull plate respectively. By adopting the present invention, the installation sequence of each component of the fairing is fully refined, improving the installation efficiency and reducing the construction difficulty.

Description

Technical Field

[0001] The present invention belongs to the technical field of ship assembly, and particularly relates to a method for installing a fairing. Background Art

[0002] For a ship equipped with a fully rotatable thruster, its base is in the form of a cylinder, and the purpose of the fairing is to make the transition between the base of the thruster cylinder and the outer plate line smooth, reduce the water flow resistance during ship navigation, and improve the speed of the ship. At present, due to the large change in its profile and the narrow internal space, it is difficult to construct, install and weld the fairing. Therefore, it is necessary to fully consider the installation sequence of components in its narrow welding space in order to successfully complete the installation of the fairing. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a method for installing a fairing, which can effectively solve the problem of difficult installation of fairing components in the complex profile and narrow welding space of the fairing structure in the prior art.

[0004] To solve the above technical problem, the technical solution adopted by the present invention is as follows: A method for installing a fairing, which includes the following steps:

[0005] Step S1, drill a hole in the outer plate of the ship, and then pass the cylinder of the thruster base through the hole and weld it to the outer plate of the ship;

[0006] Step S2, arrange a plurality of transverse partitions on the outer plate of the ship outside the cylinder of the thruster base at intervals along the longitudinal direction of the hull, and weld the upper side edges of the transverse partitions to the outer plate of the ship, and weld steel backing pads on both transverse sides of the plurality of transverse partitions; the lengths of the plurality of transverse partitions gradually decrease towards the bow side according to the profile of the fairing;

[0007] Step S3, install the fairing bottom plate on the cylinder of the thruster base, and then weld the fairing bottom plate to the transverse partitions;

[0008] Step S4, install fairing side outer plates on both transverse sides of the fairing bottom plate, then drill plug weld holes in the fairing side outer plates, and weld the inner side surfaces of the fairing side outer plates to some of the transverse partitions close to one side of the cylinder of the thruster base through the plug weld holes; weld the lower side edges of the fairing side outer plates to the fairing bottom plate, and weld the upper side edges of the fairing side outer plates to the outer plate of the ship;

[0009] Step S5: Install the end outer cladding plate of the fairing between the side outer cladding plates of the fairing on both lateral sides. The end outer cladding plate of the fairing is located on the side of the cylinder away from the thruster base. Then, drill plug welding holes in the end outer cladding plate of the fairing, and weld the end outer cladding plate of the fairing to a part of the transverse partition on the side of the cylinder away from the thruster base through the plug welding holes; weld the end outer cladding plate of the fairing to the fairing bottom plate, the side outer cladding plates of the fairing, and the outer hull plate respectively.

[0010] As a preferred solution of the present invention, in the step S1, the welding process between the fairing bottom plate and the transverse partition is a double-sided welding process; in the step S3, the welding process between the cylinder of the thruster base and the outer hull plate is a double-sided welding process.

[0011] As a preferred solution of the present invention, in the step S4, the welding processes for both the lower side edge of the side outer cladding plate of the fairing with the fairing bottom plate and the upper side edge of the side outer cladding plate of the fairing with the outer hull plate are single-sided welding processes.

[0012] As a preferred solution of the present invention, in the step S5, the welding processes for the end outer cladding plate of the fairing with the fairing bottom plate, the side outer cladding plates of the fairing, and the outer hull plate are all single-sided welding processes.

[0013] As a preferred solution of the present invention, in the step S2, arrange the longitudinal partition along the longitudinal direction of the hull on the outer hull plate outside the cylinder of the thruster base, and weld the lower side edge of the longitudinal partition to the outer hull plate, and weld the longitudinal partition to the transverse partition.

[0014] As a preferred solution of the present invention, in the step S3, weld the fairing bottom plate to the longitudinal partition, and the welding processes for both the fairing bottom plate with the longitudinal partition and the longitudinal partition with the transverse partition are double-sided welding processes.

[0015] As a preferred solution of the present invention, in the step S2, the steel backing is a steel plate, and the steel backing is welded to both lateral sides of the transverse partition.

[0016] As a preferred solution of the present invention, permanent lifting lugs are welded on the outer hull plate.

[0017] Implementing the fairing installation method provided by the present invention, compared with the prior art, its beneficial effects are as follows:

[0018] The fairing installation method of the present invention sets the fairing as a fairing bottom plate, a fairing side outer plate, a fairing end outer plate, and a plurality of transverse partitions inside, and fully refines the installation sequence of each component of the fairing, which can well adapt to the complex linear structure of the fairing and the narrow welding environment, so as to improve the installation efficiency and reduce the construction difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0020] Figure 1 is a schematic structural diagram of the fairing after being installed by the fairing installation method provided by the embodiments of the present invention;

[0021] Figure 2 is in Figure 1 a schematic structural diagram in the A-A direction of the structure shown;

[0022] Figure 3 is in Figure 1 a schematic structural diagram in the B-B direction of the structure shown;

[0023] Figure 4 is a schematic structural diagram of the fairing end outer plate;

[0024] Figure 5 is a schematic structural diagram of the fairing bottom plate.

[0025] Reference numerals in the drawings:

[0026] the cylinder body 1 of the thruster base; the transverse partition 2; the fairing bottom plate 3; the fairing side outer plate 4; the plug weld hole 5; the fairing end outer plate 6; the longitudinal partition 7; the steel backing 8. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will further describe in detail the specific embodiments of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc. are based on the orientation or positional relationships shown in the drawings. These 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. Therefore, it should not be construed as a limitation to the present invention. It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0029] As Figures 1 to 5 shown, a preferred embodiment of the present invention provides a method for installing a fairing, which includes the following steps:

[0030] Step S1: Open a hole in the outer hull plate, and then pass the cylinder 1 of the thruster base through the hole and weld it to the outer hull plate.

[0031] Step S2: Arrange a plurality of transverse partitions 2 at intervals along the longitudinal direction of the hull on the outer hull plate outside the cylinder 1 of the thruster base, and weld the upper side edges of the transverse partitions 2 to the outer hull plate. Steel liners 8 are welded to both lateral sides of the plurality of transverse partitions 2 respectively; the lengths of the plurality of transverse partitions 2 gradually decrease towards the bow side according to the structural line type of the fairing.

[0032] Step S3: Install the fairing bottom plate 3 on the cylinder 1 of the thruster base, and then weld the fairing bottom plate 3 to the transverse partitions 2.

[0033] Step S4: Install fairing side outer plates 4 on both lateral sides of the fairing bottom plate 3 respectively, and then open plug welding holes 5 on the fairing side outer plates 4. The inner side surface of the fairing side outer plates 4 is welded to a part of the transverse partitions 2 close to one side of the cylinder 1 of the thruster base through the plug welding holes 5; the lower side edges of the fairing side outer plates 4 are welded to the fairing bottom plate 3, and the upper side edges of the fairing side outer plates 4 are welded to the outer hull plate.

[0034] Step S5, install the outer end plate 6 of the fairing between the outer side plates 4 of the fairing side parts on both lateral sides. The outer end plate 6 of the fairing is located on the side of the cylinder 1 of the hull away from the thruster base. Then, open plug welding holes 5 on the outer end plate 6 of the fairing, and weld the outer end plate 6 of the fairing to a part of the lateral partition 2 on the side of the cylinder 1 of the hull away from the thruster base through the plug welding holes 5; weld the outer end plate 6 of the fairing to the fairing bottom plate 3, the outer side plates 4 of the fairing and the outer hull plate respectively.

[0035] Thus, according to the fairing installation method of the embodiment of the present invention, the installation sequence of each component of the fairing is fully refined, which can well adapt to the complex linear structure of the fairing and the narrow welding environment, so as to improve the installation efficiency and reduce the construction difficulty.

[0036] It should be noted that before the installation and welding of the fairing bottom plate 3, the construction personnel can enter the fairing installation area from both sides or the ends of the fairing bottom plate 3, that is, the welding between each component such as the fairing bottom plate 3, the lateral partition 2, the cylinder 1 of the thruster base and the outer hull plate can be applied to the double-sided welding process, so as to strengthen the welding strength between each component and between them in the fairing installation area. After the installation and welding of the fairing bottom plate 3, at this time, the construction personnel can only work outside the fairing installation area, that is, the welding of the outer side plates 4 of the fairing and the outer end plate 6 of the fairing can be applied to the single-sided welding process to solve the welding problem of the fairing components in a narrow space and ensure the integrity of the welding. Specifically, in the step S1, the welding process between the fairing bottom plate 3 and the lateral partition 2 is the double-sided welding process; in the step S3, the welding process between the cylinder 1 of the thruster base and the outer hull plate is the double-sided welding process. In the step S4, the welding process between the lower side edge of the outer side plate 4 of the fairing and the fairing bottom plate 3 and the welding process between the upper side edge of the outer side plate 4 of the fairing and the outer hull plate are both the single-sided welding process. In the step S5, the welding processes between the outer end plate 6 of the fairing and the fairing bottom plate 3, the outer side plates 4 of the fairing and the outer hull plate are all the single-sided welding process.

[0037] Exemplarily, in the step S2, to improve the support strength of the lateral partition 2, arrange the longitudinal partition 7 along the longitudinal direction of the hull on the outer hull plate outside the cylinder 1 of the thruster base, and weld the lower side edge of the longitudinal partition 7 to the outer hull plate, and weld the longitudinal partition 7 to the lateral partition 2. Among them, in the step S3, weld the fairing bottom plate 3 to the longitudinal partition 7, and the welding processes between the fairing bottom plate 3 and the longitudinal partition 7 and between the longitudinal partition 7 and the lateral partition 2 are both the double-sided welding processes.

[0038] Exemplarily, in the step S2, the steel backing 8 is a steel plate, and the steel backing 8 is welded to the two lateral sides of the transverse partition 2. Thus, by welding the steel backing 8, the contact area between the transverse partition 2 and the outer side plate 4 of the fairing can be increased, thereby improving the support strength for the outer side plate 4 of the fairing.

[0039] Exemplarily, permanent lifting lugs are welded on the hull outer plate. It should be noted that the permanent lifting lugs are welded on the hull outer plate before the installation of the fairing. During the installation of the fairing, these permanent lifting lugs can be used for the lifting and hoisting of the fairing components, assisting the construction workers to complete the assembly, positioning and welding of the fairing components, achieving the effects of reducing the construction difficulty and improving the work efficiency.

[0040] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0041] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and substitutions can still be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A fairing installation method, characterized in that, It includes the following steps: Step S1: Open a hole on the outer hull plate, and then pass the cylinder of the thruster base through the hole and weld it to the outer hull plate; the welding process between the cylinder of the thruster base and the outer hull plate is a double-sided welding process; Step S2: Arrange multiple transverse partitions on the outer hull plate outside the cylinder of the thruster base at intervals along the longitudinal direction of the hull, and weld the upper side edges of the transverse partitions to the outer hull plate, and weld steel backing pads on both transverse sides of the multiple transverse partitions respectively; the lengths of the multiple transverse partitions gradually decrease towards the bow side according to the structural line shape of the fairing; arrange the longitudinal partition along the longitudinal direction of the hull on the outer hull plate outside the cylinder of the thruster base, and weld the lower side edge of the longitudinal partition to the outer hull plate, and weld the longitudinal partition to the transverse partition; wherein, the transverse partition extends along the transverse direction of the hull, the longitudinal partition extends along the longitudinal direction of the hull, and the transverse partition and the longitudinal partition are arranged perpendicular to each other; Step S3: Install the fairing bottom plate on the cylinder of the thruster base, and then weld the fairing bottom plate to the transverse partition; the welding process between the fairing bottom plate and the transverse partition is a double-sided welding process; weld the fairing bottom plate to the longitudinal partition, and the welding processes between the fairing bottom plate and the longitudinal partition and between the longitudinal partition and the transverse partition are both double-sided welding processes; Step S4: Install fairing side outer plates on both transverse sides of the fairing bottom plate respectively, and then open plug welding holes on the fairing side outer plates, and weld the inner side surfaces of the fairing side outer plates to some of the transverse partitions close to the side of the cylinder of the thruster base through the plug welding holes; weld the lower side edges of the fairing side outer plates to the fairing bottom plate, and weld the upper side edges of the fairing side outer plates to the outer hull plate; the welding processes between the lower side edges of the fairing side outer plates and the fairing bottom plate and between the upper side edges of the fairing side outer plates and the outer hull plate are both single-sided welding processes; Step S5: Install a fairing end outer plate between the fairing side outer plates on both transverse sides, the fairing end outer plate is located on the side far from the cylinder of the thruster base, and then open plug welding holes on the fairing end outer plate, and weld the fairing end outer plate to some of the transverse partitions on the side far from the cylinder of the thruster base through the plug welding holes; weld the fairing end outer plate to the fairing bottom plate, the fairing side outer plate and the outer hull plate respectively; the welding processes between the fairing end outer plate and the fairing bottom plate, the fairing side outer plate and the outer hull plate are all single-sided welding processes.

2. The fairing installation method according to claim 1, wherein, In the step S2, the steel backing pad is a steel plate, and the steel backing pad is welded to both transverse sides of the transverse partition.

3. The fairing installation method according to claim 1, wherein Permanent lifting lugs are welded on the outer hull plate.

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