CN-121973904-A - Cargo tank positioning and mounting method and ship

CN121973904ACN 121973904 ACN121973904 ACN 121973904ACN-121973904-A

Abstract

The invention belongs to the technical field of ship construction, and discloses a cargo tank positioning and mounting method and a ship. The cargo tank positioning and mounting method comprises the steps of S10, carrying out simulated mounting on a cargo tank and a cargo hold supporting seat, calculating the mounting deviation amount of the cargo tank compared with the cargo hold supporting seat, S20, correcting the mounting deviation amount of the cargo tank compared with the cargo hold supporting seat, obtaining a target mounting position of the cargo tank, hoisting the cargo tank above the cargo hold supporting seat according to the target mounting position, enabling the cargo tank to be aligned with the cargo hold supporting seat in the Z direction, S30, lowering the cargo tank to be in contact with the cargo hold supporting seat, leveling the cargo tank according to the mounting deviation amount of the cargo tank compared with the cargo hold supporting seat, and S40, fixedly mounting the cargo tank and the cargo hold supporting seat. The positioning and mounting method for the cargo tank can reduce the uncertainty of the cargo tank lifting site and rapidly and accurately realize the one-time positioning and mounting of the cargo tank.

Inventors

Liu Xiongnan
ZOU ZHE
LI DAWEI
SHAO DANDAN
LU ZEXIN
LUO BINGZHONG
LAO WEI

Assignees

广州文冲船厂有限责任公司

Dates

Publication Date: 20260505
Application Date: 20260313

Claims (10)

1. The cargo tank positioning and mounting method is characterized by comprising the following steps: S10, carrying out simulation loading on the cargo tank (100) and the cargo hold supporting seat (200), and calculating the installation deviation amount of the cargo tank (100) compared with the cargo hold supporting seat (200); S20, correcting the installation deviation of the cargo tank (100) compared with the cargo hold supporting seat (200), obtaining a target installation position of the cargo tank (100), and hoisting the cargo tank (100) above the cargo hold supporting seat (200) according to the target installation position, so that the cargo tank (100) is aligned with the cargo hold supporting seat (200) in the Z direction; S30, lowering the cargo tank (100) to be in contact with the cargo hold supporting seat (200), and leveling the cargo tank (100) according to the installation deviation amount of the cargo tank (100) compared with the cargo hold supporting seat (200); s40, fixedly mounting the cargo tank (100) and the cargo hold supporting seat (200).
2. The cargo tank positioning and mounting method according to claim 1, wherein step S10 includes: s11, after the cargo tank (100) is manufactured, collecting characteristic points of the cargo tank (100), and after the cargo hold supporting seat (200) is installed, collecting data of the characteristic points of the cargo hold supporting seat (200); S12, introducing the characteristic points of the cargo tank (100) and the characteristic points of the cargo hold supporting seat (200) into the same reference coordinate system, carrying out simulation loading on the cargo tank (100) and the cargo hold supporting seat (200), and calculating the installation deviation amount of the cargo tank (100) by taking the characteristic points of the cargo hold supporting seat (200) as the reference in the X direction, the Y direction and the Z direction.
3. The cargo tank positioning and mounting method according to claim 1, wherein step S20 includes: S21, arranging a cargo hold positioning mark at the bottom of the cargo hold, and arranging a cargo tank positioning mark on a cargo tank (100); S22, simulating and correcting the installation deviation amount of the cargo tank (100) compared with the cargo tank supporting seat (200), after obtaining the target installation position of the cargo tank (100), hoisting the cargo tank (100) to the upper side of the cargo tank supporting seat (200) according to the target installation position, and adjusting the posture of the cargo tank (100) to enable the cargo tank (100) to conform to the target installation position in the Z direction, so that the cargo tank locating mark corresponds to the cargo tank locating mark.
4. A cargo tank positioning and mounting method according to claim 3, characterized in that the cargo tank positioning mark comprises a cargo tank vertical line (210) starting from the bottom of the cargo tank and parallel to the Z-direction, the cargo tank vertical line (210) being located in a central position between two adjacent cargo tank holders (200); The cargo tank locating mark comprises a cargo tank vertical line (110), wherein the cargo tank vertical line (110) is parallel to the Z direction, and the cargo tank vertical line (110) coincides with the vertical central line of the side part of the cargo tank (100).
5. The method for positioning and installing a cargo tank according to claim 4, wherein the cargo tank vertical line (210) is a line laser projected by a laser projector provided at the bottom of the cargo tank, and/or, The vertical line (110) of the cargo tank is painted on the cargo tank (100).
6. A cargo tank positioning and mounting method according to claim 3, wherein the cargo tank positioning mark includes a vertex angle correspondence mark provided at the bottom of the cargo tank, the vertex angle correspondence mark being provided at a vertex angle of the bottom of the cargo tank in the Z direction corresponding to the target mounting position of the cargo tank; the cargo tank locating mark comprises a vertex angle target, and the vertex angle target is arranged at the vertex angle of the cargo tank (100).
7. The cargo tank positioning and mounting method according to claim 6, wherein step S30 includes: s31, arranging a plurality of jacking systems (300) at the bottom of the cargo hold, and hoisting the cargo tank (100) until the cargo tank is contacted with the plurality of jacking systems (300); s32, adjusting the supporting heights of the plurality of jacking systems (300) according to the installation deviation amount of the cargo tank (100) compared with the cargo hold supporting seat (200), and leveling the cargo tank (100).
8. The cargo tank positioning and mounting method according to claim 7, wherein a plurality of jacking systems (300) are arranged in a uniform array.
9. The method of positioning and installing a cargo tank as recited in claim 7, wherein step S40 includes S41, in a leveling state, fixedly connecting the supporting legs (120) of the cargo tank (100) and the cargo hold supporting seats (200); S42, pressure relief is carried out on the jacking system (300) one by one.
10. Vessel, characterized in that the vessel comprises a cargo hold and a cargo tank (100), in which cargo hold support (200) is arranged, the vessel employing a cargo tank securing installation method according to any of claims 1-9 for installing the cargo tank (100) to the cargo hold support (200).

Description

Cargo tank positioning and mounting method and ship Technical Field The invention relates to the technical field of ship construction, in particular to a cargo tank positioning and mounting method and a ship. Background In the construction of ships such as gas ships, it is necessary to install liquid cargo tanks which are huge in volume and weigh hundreds to thousands of tons. The above-mentioned cargo tank needs to be safely and precisely suspended into a narrow cargo tank and mounted on a predetermined support base. At present, the conventional cargo tank hoisting and positioning method mainly relies on a large-scale floating crane or a gantry crane to hoist and transport a main body, and is combined with a total station to perform rough positioning, and then final positioning of the cargo tank is realized through a large number of manual measurements and repeated adjustment (such as using tools such as a jack and a crow bar). The existing cargo tank positioning and mounting method has the problems that firstly, the inner space of a cargo tank is extremely narrow, the measurement sight is blocked, and the traditional optical instrument is difficult to erect and look through. The process depends on real-time measurement and adjustment in the hoisting process, often needs to take off and land for many times and try repeatedly, occupies the service cycle of a dock or a wharf and large hoisting equipment resources, and is low in efficiency. Secondly, after the cargo tank is initially in place, fine adjustment is required to be performed on six degrees of freedom (front and back, left and right, up and down, pitching, tilting and pitching), but at present, manual grouping operation is generally performed by adopting a plurality of groups of jacks, so that the consistency is poor, synchronous and accurate regulation and control of millimeter level are difficult to realize, the adjustment means are extensive, and systematic and digital means are lacked. Finally, the existing cargo tank positioning and mounting method is insufficient in matching analysis of the ship body construction tolerance and the liquid cargo tank manufacturing tolerance before hoisting, so that a large amount of adjustment work is forced to be solved in the most time-consuming and most costly hoisting stage, and the experience dependence of hoisting operation is too strong. Therefore, there is a need for a cargo tank positioning and installing method and a ship to solve the above problems. Disclosure of Invention According to one aspect of the invention, an object of the invention is to provide a positioning and mounting method for a cargo tank, which can reduce uncertainty of a cargo tank lifting site and rapidly and accurately realize one-time positioning and mounting of the cargo tank. To achieve the purpose, the invention adopts the following technical scheme: The cargo tank positioning and mounting method comprises the following steps: S10, carrying out simulation carrying on the cargo tank and the cargo hold supporting seat, and calculating the installation deviation amount of the cargo tank compared with the cargo hold supporting seat; S20, correcting the installation deviation of the cargo tank compared with the cargo hold supporting seat, obtaining a target installation position of the cargo tank, and hoisting the cargo tank above the cargo hold supporting seat according to the target installation position, so that the cargo tank is aligned with the cargo hold supporting seat in the Z direction; s30, lowering the cargo tank to be in contact with the cargo hold supporting seat, and leveling the cargo tank according to the installation deviation amount of the cargo tank compared with the cargo hold supporting seat; S40, fixedly mounting the cargo tank and the cargo hold supporting seat. As a preferred embodiment of the cargo tank positioning and mounting method provided by the present invention, step S10 includes: S11, collecting characteristic points of the cargo tank after the cargo tank is manufactured, and collecting data of the characteristic points of the cargo tank support seat after the cargo tank support seat is installed; S12, introducing the characteristic points of the cargo tank and the characteristic points of the cargo hold supporting seat into the same reference coordinate system, carrying out simulation loading on the cargo tank and the cargo hold supporting seat, and calculating the installation deviation amount of the cargo tank based on the characteristic points of the cargo hold supporting seat in the X direction, the Y direction and the Z direction. As a preferred embodiment of the cargo tank positioning and mounting method provided by the present invention, step S20 includes: S21, arranging a cargo hold positioning mark at the bottom of the cargo hold, and arranging a cargo tank positioning mark on a cargo tank; S22, simulating and correcting the installation deviation amount of the cargo tank compared with the