A B-type cabin air dome with energy absorbing connection device

Abstract

A B-type cabin air dome with an energy absorbing connection device, the top of the air dome of the B-type cabin extends out of the upper deck, the top of the air dome has a top plate, the lower surface of the top plate is fixed with a deck longitudinal girder, and an energy absorbing connection piece is fixed under the deck longitudinal girder. The main body of the energy absorbing connection piece is " W "type," W The "-shaped body is laid down, and the opening of the lying body is away from the air dome, forming upper and lower wing plates, two first grooves on the same side, and a second groove on the opposite side. The bottoms of the first groove and the second groove are both arc-shaped, and the two first grooves are filled with first energy-absorbing rubbers, and the second groove is fixed with a second energy-absorbing rubber. The upper and lower wing plates of the body are respectively connected to the deck longitudinal girder and the upper deck hatch enclosure by bolts. The present invention effectively avoids structural damage caused by the collision between the air dome structure and the upper deck structure, improves the tensile and compressive resistance of the flexible connection steel plate, and evenly applies the lateral load to the connection bolts, thereby improving the safety of the connection device.

Description

Technical Field

[0001] The present invention relates to the field of B-type cabins, and more particularly to an air dome with an energy absorbing connection device in a B-type cabin. Background Art

[0002] With the in-depth implementation of the dual-carbon policy and the improvement of environmental protection standards in various countries around the world, the application of LNG clean energy in the field of marine shipping is becoming more and more extensive. Considering the ring plate and economy, dual-fuel main engines are equipped with a large number of new ships, and some old ships are also converted into dual-fuel ships. Type B tanks, as storage equipment for LNG, are also widely arranged on ships. The air dome structure of the type B tank extends out of the upper deck of the hull, and the top of the air dome is connected to the upper deck. Due to the effects of inertia and acceleration, the air dome structure and the upper deck will have relative movement, and the load will be too large at the connection position. In addition, the air dome is filled with inert gas and is in contact with the type B tank. The type B tank is filled with low-temperature LNG, and the temperature of the inert gas is low. If the ship travels to high-temperature waters, the inert gas will heat up and expand, and there will be lateral relative movement between the air dome and the upper deck, generating lateral loads. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a B-type cabin air dome with an energy absorbing connection device, which aims to unload the load generated at the connection when the air dome and the upper deck move relative to each other, thereby ensuring the stability of the B-type cabin air dome. The technical solution adopted is:

[0004] A B-type cabin air dome with an energy absorbing connection device, the top of the air dome of the B-type cabin extends out of the upper deck, the top of the air dome is provided with a top plate, the lower surface of the top plate is fixed with a deck longitudinal girder, and an energy absorbing connection piece is fixed under the deck longitudinal girder.

[0005] The main body of the energy absorbing connecting piece is in the shape of " W "type," W The main body of the type is placed upside down, forming two upper and lower wing plates, two first grooves on the same side, and a second groove on the opposite side, wherein the first groove is far away from the air dome, and the bottoms of the first groove and the second groove are both arc-shaped, the two first grooves are filled with first energy-absorbing rubbers, and the second groove is fixed with a second energy-absorbing rubber.

[0006] The upper and lower wing plates are connected to the deck longitudinal girder and the upper deck hatch enclosure wall respectively through bolts, and a plurality of energy absorbing connectors are arranged at equal intervals along the circumference of the air dome top.

[0007] The above-mentioned B-type cabin air dome with an energy-absorbing connection device, further, the first energy-absorbing rubber is bonded to the inside of the first groove, the second energy-absorbing rubber is gourd-shaped as a whole, and is fixed to the second groove by a positioning spring, there is a distance between the second energy-absorbing rubber and the bottom of the second groove, and there is a gap between the second energy-absorbing rubber and the groove wall around the second groove.

[0008] The above-mentioned B-type cabin air dome with an energy-absorbing connection device, further, the gourd-shaped second energy-absorbing rubber is placed horizontally, the two positioning springs are symmetrically located on both sides of the waist of the second energy-absorbing rubber, one end of the positioning spring is fixed to the second energy-absorbing rubber, and the other end is fixed to the wall of the second groove.

[0009] The above-mentioned B-type cabin air dome with energy-absorbing connecting device, further, the gourd-shaped second energy-absorbing rubber is placed horizontally, and the larger end of the second energy-absorbing rubber is far away from the bottom of the second groove.

[0010] The above-mentioned B-type air dome with energy-absorbing connection device, further, is provided with heat-insulating material filled between the longitudinal deck girders and the transition structural members.

[0011] The above-mentioned B-type cabin air dome with an energy-absorbing connection device, further, the first energy-absorbing rubber fills the inside of the first groove and extends all the way to the bolt.

[0012] The above-mentioned B-type cabin air dome with an energy-absorbing connection device, further, the deck longitudinal girder and the upper deck hatch enclosure are T-shaped sections, and the upper and lower wing plates are respectively connected to the wing plates of the deck longitudinal girder and the wing plates of the upper deck hatch enclosure.

[0013] The beneficial effects of the present invention are:

[0014] 1. The application of flexible connection devices effectively avoids structural damage caused by violent relative movement and collision between the air dome structure and the upper deck structure.

[0015] 2. By filling energy-absorbing rubber and energy-absorbing devices at the bottom and center of the flexible connecting steel plate, the tensile and compressive capacity of the flexible connecting steel plate can be improved, thereby improving the safety of the steel plate.

[0016] 3. By filling energy-absorbing rubber at the upper and lower bottoms of the flexible connecting steel plate, the lateral load can be evenly applied to the connecting bolts, thereby improving the safety of the connecting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2is an enlarged schematic diagram of the structure of the second groove and the second energy absorbing rubber;

[0019] Figure 3 It is a schematic cross-sectional view of a structure in which an energy absorbing connection piece is provided between the top of the air dome phase and the upper deck;

[0020] Among them: 1-top plate, 3-upper deck, 4-deck longitudinal girder, 5-energy absorbing connector, 6-insulation material, 7-transition structure, 8-upper deck hatch enclosure, 9-first energy absorbing rubber, 10-bolt, 11-second energy absorbing rubber, 12-positioning spring. DETAILED DESCRIPTION

[0021] The present invention will be further described with reference to the accompanying drawings.

[0022] like Figure 1 , 3 The B-type cabin air dome with an energy absorbing connection device is shown. The top of the air dome of the B-type cabin extends out of the upper deck. The top of the air dome has a top plate. The lower surface of the top plate is fixed with a deck longitudinal girder. The energy absorbing connection piece is fixed under the deck longitudinal girder. The main body of the energy absorbing connection piece is " W "type," W The "-shaped body is placed lying down, forming two upper and lower wing plates, two first grooves on the same side, and a second groove on the opposite side. The first groove is far away from the air dome, and the bottoms of the first groove and the second groove are both arc-shaped. The two first grooves are filled with first energy-absorbing rubbers, and the second groove is fixed with a second energy-absorbing rubber. The first energy-absorbing rubber is bonded to the inside of the first groove, and the second energy-absorbing rubber is gourd-shaped as a whole, fixed to the second groove by a positioning spring. There is a gap between the second energy-absorbing rubber and the bottom of the second groove, and there is a gap between the second energy-absorbing rubber and the groove wall around the second groove. The gourd-shaped second energy-absorbing rubber is placed horizontally, and two positioning springs are symmetrically located on both sides of the waist of the second energy-absorbing rubber. One end of the positioning spring is fixed to the second energy-absorbing rubber, and the other end is fixed to the groove wall of the second groove.

[0023] The upper and lower wing plates of the main body are connected to the deck longitudinal girder and the upper deck hatch enclosure by bolts. The sections of the deck longitudinal girder and the upper deck hatch enclosure are both T-shaped. The upper and lower wing plates of the main body are respectively fitted with the deck longitudinal girder and the upper deck hatch enclosure and fixed by bolts.

[0024] When the air dome moves vertically relative to the upper deck structure of the hull, the flexible connector will be stretched or compressed to absorb energy and prevent structural damage.

[0025] When the flexible connector is in a stretched state, if the relative movement is too violent and exceeds the elastic range of the flexible connector material, the first energy-absorbing rubber will be stretched to protect the flexible connector from being damaged. When the flexible connector is in a compressed state, if the relative movement is too violent, the large ball of the second energy-absorbing rubber will be compressed first, increasing the rigidity of the connecting steel plate, providing it with restoring force, and preventing the end structure of the connecting steel plate from being damaged. If the movement is further intensified, the small ball of the second energy-absorbing rubber will be compressed to protect the flexible connector from being damaged. When the inert gas in the air dome expands due to heat, it will drive the deck longitudinal girder and the upper deck hatch enclosure structure to produce lateral relative movement. The first energy-absorbing rubber will produce lateral deformation and evenly transfer the lateral load to the bolts to prevent structural damage.

Claims

1. A B-type cabin air dome with an energy absorbing connection device, characterized in that: The top of the gas dome of the B-type cabin extends out of the upper deck, and the gas dome has a top plate, and a deck longitudinal girder is fixed on the lower surface of the top plate, and an energy-absorbing connector is fixed under the deck longitudinal girder; the main body of the energy-absorbing connector is in a "W" shape as a whole, and the "W"-shaped main body is placed in a lying position, forming two upper and lower wing plates, two first grooves on the same side, and a second groove on the opposite side, the first groove is far away from the gas dome, and the bottoms of the first groove and the second groove are both arc-shaped, and the two first grooves are filled with first energy-absorbing rubbers, and the second groove is fixed with a second energy-absorbing rubber; the upper and lower wing plates are respectively connected to the deck longitudinal girder and the upper deck hatch enclosure wall by bolts, and a plurality of energy-absorbing connectors are arranged at equal intervals along the circumference of the gas dome; the first energy-absorbing rubber is bonded to the inside of the first groove, and the second energy-absorbing rubber is in a gourd shape as a whole, and is fixed to the second groove by a positioning spring, and there is a gap between the second energy-absorbing rubber and the bottom of the second groove, and there is a gap between the second energy-absorbing rubber and the groove wall around the second groove; The gourd-shaped second energy-absorbing rubber is placed horizontally, and the two positioning springs are symmetrically located on both sides of the waist of the second energy-absorbing rubber. One end of the positioning spring is fixed to the second energy-absorbing rubber, and the other end is fixed to the wall of the second groove.

2. A B-type cabin air dome with an energy absorbing connection device according to claim 1, characterized in that: The gourd-shaped second energy-absorbing rubber is placed horizontally, and the end of the second energy-absorbing rubber with a larger belly is far away from the bottom of the second groove.

3. A B-type cabin air dome with an energy absorbing connection device according to claim 1, characterized in that: The space between the deck longitudinal girder and the transition structure is filled with heat insulation material, and the transition structure is located below the top plate.

4. A B-type cabin air dome with an energy absorbing connection device according to claim 1, characterized in that: The first energy-absorbing rubber fills the first groove and extends to the bolt.

5. A B-type cabin air dome with an energy absorbing connection device according to claim 1, characterized in that: The deck longitudinal girder and the upper deck hatch enclosure are T-shaped bars, and the upper and lower wing plates are respectively connected to the wing plates of the deck longitudinal girder and the wing plates of the upper deck hatch enclosure.

Images