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CN-122009381-A - Corner structure for LNG filling ship transverse compartment platform and installation method thereof

CN122009381ACN 122009381 ACN122009381 ACN 122009381ACN-122009381-A

Abstract

The invention relates to the technical field of LNG ship manufacturing, in particular to a corner structure for an LNG filling ship transverse compartment platform and an installation method thereof. The corner structure comprises a corner structure surrounded by a transverse cabin wall plate, a bulkhead plate, a broadside plate and a longitudinal wall plate, wherein the transverse cabin wall plate is fixed on an upper side wall plate and a lower side wall plate, the broadside plate is provided with an extending edge which extends outwards at a transverse bulkhead to be in butt joint with a bulkhead inner platform, a circular arc gap is formed at a butt joint corner, and a plugging plate for plugging the circular arc gap is arranged on the transverse cabin wall plate. Stress concentration at the corner is avoided by arranging an arc notch, namely a negative corner, on the platform plate, and the local structure at the corner is not subjected to larger concentrated stress, so that the fatigue resistance is improved, and the problem that the conventional design cannot be adopted for arc transition on the LNG filling ship in the prior art, and the stress concentration is caused is solved.

Inventors

  • HE WEIZHONG
  • GAO TIANMIN
  • Tang Shouxi
  • WANG WEI
  • Yuan Daiwen

Assignees

  • 沪东中华造船(集团)有限公司

Dates

Publication Date
20260512
Application Date
20260319

Claims (6)

  1. 1. A corner structure for a LNG filling ship transverse bulkhead platform comprises a corner structure surrounded by transverse bulkhead plates, bulkhead platform plates, side bulkhead plates and longitudinal wall plates and is characterized in that the side bulkhead plates divide the longitudinal wall plates into an upper side wall plate and a lower side wall plate, the transverse bulkhead plates are fixed on the upper side wall plate and the lower side wall plate, the side bulkhead plates are provided with extending edges which extend outwards to be butted with the bulkhead inner platform at the transverse bulkhead, arc gaps are formed at the butting corners, and blocking plates for blocking the arc gaps are arranged on the transverse bulkhead plates.
  2. 2. The corner structure for LNG refueling ship transverse compartment platform as claimed in claim 1, wherein the plugging plate is provided with a plugging slot adapted to the extension edge for insertion of the extension edge.
  3. 3. The corner structure for a LNG refueling ship transverse compartment platform according to claim 1 or 2, wherein the plugging plate is a sector plate, the center of which is located at the corner of the upper side wall plate and the lower side wall plate.
  4. 4. A corner structure for a LNG refueling ship transverse compartment platform according to claim 1 or 2, characterized in that the extension length of the extension edge is 100-150mm.
  5. 5. A method for installing a corner structure of a transverse bulkhead platform of an LNG filling ship is characterized in that a longitudinal wall plate is divided into an upper side wall plate and a lower side wall plate during installation, a side panel is kept between the upper side wall plate and the lower side wall plate, before the transverse bulkhead plate is fixed on the upper side wall plate and the lower side wall plate, a clearance gap is formed at the junction of the transverse bulkhead plate and the upper side wall plate and the lower side wall plate, after the transverse bulkhead plate is fixed on the longitudinal wall plate, a plugging plate for plugging the clearance gap is welded and fixed at the position of the clearance gap.
  6. 6. The method of installing a corner structure for an LNG filling ship transverse bulkhead platform according to claim 5, wherein the side deck boards are placed between the upper side wall boards and the lower side wall boards, the edges of the side deck boards are kept exposed from the longitudinal wall boards to form the extension edges, and the plugging grooves adapted to the extension edges are synchronously provided on the plugging boards, and the extension edges are kept in butt joint with the plugging grooves when the plugging boards are installed.

Description

Corner structure for LNG filling ship transverse compartment platform and installation method thereof Technical Field The invention relates to the technical field of LNG ship manufacturing, in particular to a corner structure for an LNG filling ship transverse compartment platform and an installation method thereof. Background In general, in the design of ship structures, the cross bulkheads make use of the positive corner transitions of circular arc tangents to the continuous platform at the corners to reduce the damage of stress concentrations to the structure. However, on LNG refueling vessels, the need to install insulation on the tank shell requires that the shell structure be as flat as possible, especially that no bulge be present at the corners, and therefore that the manner of circular arc transitions be used at the corners is not suitable, but conventional design methods do not meet these requirements. Disclosure of Invention In view of the above, the invention provides a corner structure for a transverse compartment platform of an LNG filling ship, which is used for solving the problem that the conventional design cannot be adopted for arc transition on the LNG filling ship and stress concentration is caused in the prior art, and the invention also provides an installation method for the corner structure of the transverse compartment platform of the filling ship, which is used for solving the technical problems. The utility model provides a corner structure for LNG filling ship diaphragm cabin platform, includes by the diaphragm cabin wallboard, bulkhead platform board, side platform board and the corner structure that the longitudinal wall board encloses, and the side platform board divides the longitudinal wall board into upper side wall board and lower side wall board, and the diaphragm cabin wallboard is fixed on upper side wall board and lower side wall board, side platform board has the extension limit that outwards stretches out in order to dock with the bulkhead inner platform in the bulkhead department, and butt joint corner department has the circular arc breach, is provided with the shutoff board to the circular arc breach shutoff on the diaphragm cabin wallboard. Further, the plugging plate is provided with a plugging groove which is matched with the extending edge for the extending edge to be inserted. Further, the plugging plate is a sector plate, and the circle center of the sector plate is positioned at the corner of the upper side wall plate and the lower side wall plate. Further, the extension length of the extension edge is 100-150mm. The corner structure for the LNG filling ship transverse bulkhead platform has the beneficial effects that as the corner structure can generate larger stress concentration in the contact process in the form of the right angle, the stress concentration at the corner is avoided by arranging the arc notch on the side platform and the transverse bulkhead platform, and then the plugging plate is arranged to plug the gap, so that the effect of sealing the transverse bulkhead is achieved, the local structure at the corner is not subjected to larger concentrated stress, the fatigue resistance is improved, the problem that the continuity of the bulkhead is damaged up and down is avoided, the integrity of the cargo tank is ensured, and the problem that the conventional design can cause stress concentration due to the fact that the LNG filling ship cannot adopt arc transition in the prior art is solved. Further, the extending edges are arranged on the side platform boards, and the plugging grooves are formed in the plugging boards, so that the plugging boards can be conveniently positioned and installed. A method for installing a corner structure of a transverse bulkhead platform of an LNG filling ship includes the steps of dividing a longitudinal wall plate into an upper side wall plate and a lower side wall plate during installation, keeping a side panel plate between the upper side wall plate and the lower side wall plate, forming an avoidance gap at the junction of the transverse bulkhead plate and the upper side wall plate and the lower side wall plate before the transverse bulkhead plate is fixed on the upper side wall plate and the lower side wall plate, and finally welding and fixing a plugging plate for plugging the avoidance gap at the position of the avoidance gap after the transverse bulkhead plate is fixed on the longitudinal wall plate. Further, when the side deck boards are placed between the upper side wall board and the lower side wall board, the edges of the side deck boards are kept exposed from the longitudinal wall boards to form the extending edges, and the plugging grooves matched with the extending edges are synchronously arranged on the plugging boards, and the extending edges are kept in butt joint with the plugging grooves when the plugging boards are installed. The corner structure mounting method for the LNG filling ship transver