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1 – 10 of 186FaGuang Jiang, Kebing Chen, Yang Chen and Cheng Tian
In response to the challenges posed by the conventional manual flange docking method in the LNG (Liquefied Natural Gas) loading process, such as low positioning accuracy…
Abstract
Purpose
In response to the challenges posed by the conventional manual flange docking method in the LNG (Liquefied Natural Gas) loading process, such as low positioning accuracy, constraints on production efficiency and safety hazards, this study analyzed the LNG five-axis loading arm’s main functions and structural characteristics.
Design/methodology/approach
An automated solution for the joints of the LNG loading arm was designed. The forward kinematic model of the LNG loading arm was established using the Denavit–Hartenberg (D-H) parameter method, and its workspace was analyzed. The Newton–Raphson iteration method was employed to solve the inverse kinematics of the LNG loading arm, facilitating trajectory planning. The relationship between the target position and the joint variables was established to verify the stability of the arm’s motion. Flange center identification was achieved using the Hough transform function. Based on the ROS platform, combined with Gazebo and Rviz, an experimental simulation of automatic docking of the LNG loading arm was conducted.
Findings
The docking errors in the XYZ directions were all less than 0.8 mm, meeting the required docking accuracy. Moreover, the motion performance of the loading arm during docking was smooth and free of abrupt changes, validating its capability to accomplish the automatic docking task.
Originality/value
The proposed trajectory planning and automatic docking scheme can be used for the rapid filling of LNG filling arms and LNG tankers to improve the efficiency of LNG transportation. In guiding the docking, the proposed automatic docking scheme is an accurate and efficient way to improve safety.
Details
Keywords
Russia’s gas export strategy is predicated on the rapid growth of liquefied natural gas (LNG) exports. Following the collapse of pipeline gas sales to Europe, Russia’s plans to…
Details
DOI: 10.1108/OXAN-DB286171
ISSN: 2633-304X
Keywords
Geographic
Topical
This is the trajectory followed by the majority of member states. However, blockages remain in east-central Europe, where Turkey could play a role in maintaining direct or…
Details
DOI: 10.1108/OXAN-DB286400
ISSN: 2633-304X
Keywords
Geographic
Topical
RUSSIA: LNG ‘dark fleet’ will grow in number
Details
DOI: 10.1108/OXAN-ES288458
ISSN: 2633-304X
Keywords
Geographic
Topical
Modestly increased gas exports to China have offset only a fraction of the lost business in Europe. The United States last year imposed sanctions on the flagship Arctic-2 LNG…
Details
DOI: 10.1108/OXAN-DB284845
ISSN: 2633-304X
Keywords
Geographic
Topical
Europe's mild winter has curbed gas demand, keeping inventories at record levels despite lower imports in 2023 than in 2022. East Asian demand has risen, but increased output from…
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DOI: 10.1108/OXAN-DB284460
ISSN: 2633-304X
Keywords
Geographic
Topical
RUSSIA: LNG exports will keep growing
RUSSIA: Europe will keep importing Russian LNG
Earlier in January, it awarded contracts to increase and sustain output at its main oilfield. Doha wants to dilute its overdependence on a single commodity and to extract value…
Details
DOI: 10.1108/OXAN-DB285576
ISSN: 2633-304X
Keywords
Geographic
Topical
RUSSIA: LNG exports will grow next year