CN113212664A

CN113212664A - Air chamber communication structure and liquefied gas carrier of C type fluid reservoir

Info

Publication number: CN113212664A
Application number: CN202110643597.1A
Authority: CN
Inventors: 柳卫东; 王璐玭
Original assignee: Jiangnan Shipyard Group Co Ltd
Current assignee: Jiangnan Shipyard Group Co Ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2021-08-06

Abstract

The invention provides a gas chamber communication structure of a C-shaped liquid tank, wherein an inner cavity of the liquid tank is divided into a left cabin and a right cabin by a longitudinal cabin wall, the tops of the left cabin and the right cabin are respectively communicated with a gas chamber, the gas chamber protrudes in a direction back to the liquid tank to form a gas phase loading space, and the top of the gas phase loading space is provided with a top plate; the gas-phase loading device is characterized by further comprising a communicating pipe used for communicating the two gas-phase loading spaces, wherein the communicating pipe is located outside the gas chamber, and the end part of the communicating pipe is connected with the top plate and does not extend into the gas-phase loading spaces. The liquid storage tank has the beneficial effects that through the communicating pipe arranged on the top plate of the air chamber and connected with each other, gas phase communication and liquid phase non-communication are realized between the left cabin and the right cabin of the liquid tank, the left cabin and the right cabin can be loaded with two different liquid cargos simultaneously, and the flexibility of ship operation is improved.

Description

Air chamber communication structure and liquefied gas carrier of C type fluid reservoir

Technical Field

The invention relates to the technical field of liquefied gas carriers, in particular to a C-shaped liquid tank air chamber communication structure and a liquefied gas carrier.

Background

The vertical bulkhead that is divided into by the liquid-tight in the C type binaural tank of current is left cabin and right cabin, and two cabins are independent chamber, and the top is equipped with the air chamber that is used for concentrating the steam that produces in the tank respectively, communicates each other through being located the communicating pipe of air chamber inside between two air chambers for pressure in two cabins keeps balance. The communicating pipe is provided with the small holes, and when the ship body inclines, the end part of the communicating pipe is probably immersed into the liquid phase in the left cabin or the right cabin, so that the left cabin and the right cabin are communicated with each other in a gas phase and a liquid phase, and therefore the left cabin and the right cabin can only be filled with the same kind of goods at the same time, and the actual operation of the ship is inconvenient.

Disclosure of Invention

In view of the above drawbacks, an object of the present invention is to provide a communicating structure for an air chamber of a C-type liquid tank, which realizes the non-communication of liquid phase between a left chamber and a right chamber of a C-type binaural liquid tank.

The invention provides a gas chamber communication structure of a C-shaped liquid tank, wherein an inner cavity of the liquid tank is divided into a left cabin and a right cabin by a longitudinal cabin wall, the tops of the left cabin and the right cabin are respectively communicated with a gas chamber, the gas chamber protrudes in a direction back to the liquid tank to form a gas phase loading space, and the top of the gas phase loading space is provided with a top plate; the gas chamber is characterized by further comprising a communicating pipe for communicating the two gas-phase loading spaces, wherein the communicating pipe is positioned outside the gas chamber, and the end part of the communicating pipe is connected with the top plate and does not extend into the gas-phase loading spaces.

Preferably, a first insulating layer is laid outside the air chamber.

Preferably, a second insulating layer is laid on the outer side of the communicating pipe.

Preferably, an end of the communication pipe is disposed at a symmetrical center of the top plate.

Preferably, the longitudinal bulkhead is connected with the liquid tank in a sealing mode.

The invention also provides a liquefied gas carrier which comprises a plurality of liquid tanks arranged along the length direction of a ship body, and each liquid tank is provided with the air chamber communicating structure.

The liquid storage tank has the beneficial effects that through the communicating pipe arranged on the top plate of the air chamber and connected with each other, gas phase communication and liquid phase non-communication are realized between the left cabin and the right cabin of the liquid tank, the left cabin and the right cabin can be loaded with two different liquid cargos simultaneously, and the flexibility of ship operation is improved.

Drawings

FIG. 1 is a schematic front view of a liquefied gas carrier according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is an enlarged schematic view at B in fig. 2.

Element number description:

1 hull of ship

2 liquid pot

21 left cabin

22 right cabin

3 longitudinal bulkhead

41 first insulating layer

42 second insulating layer

5 air chamber

51 Top plate

6 communicating pipe

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "left", "right", "vertical", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 2 and 3, the conventional liquid tank 2 is disposed in the hull 1, an inner cavity of the tank is partitioned into a left chamber 21 and a right chamber 22 by a longitudinal bulkhead 3, the longitudinal bulkhead 3 and the liquid tank 2 are hermetically connected, and neither a gas phase nor a liquid phase can flow between the left chamber 21 and the right chamber 22 through the longitudinal bulkhead 3. In order to ensure that the left chamber 21 and the right chamber 22 are communicated with each other in a gas phase and the pressure is equal, and the vertical bulkhead 3 is not subjected to the pressure inside the liquid tank 2, the invention provides a gas chamber communication structure of the C-shaped liquid tank, wherein the top parts of the left chamber 21 and the right chamber 22 are respectively communicated with a gas chamber 5, the gas chamber 5 protrudes towards the direction (namely the direction of a deck) away from the liquid tank 2 to form a gas phase loading space, and the top part of the gas phase loading space is provided with a top plate 51. The gas chamber communication structure of the present invention further includes a communication pipe 6 for communicating the two gas-phase loading spaces, the communication pipe 6 is located outside the gas chamber 5, and an end of the communication pipe 6 is connected to the top plate 51 and does not extend into the gas-phase loading spaces. After the arrangement, even if the liquid tank 2 inclines along with the ship, a gap is still left between the liquid phase entering the gas phase loading space from the cabin at one side and the top plate 51, and the liquid phase cannot enter the cabin at the other side through the communicating pipe 6, so that the gas phase communication and the liquid phase non-communication between the left cabin 21 and the right cabin 22 are realized, two different liquid cargos (such as propane and ethane) can be loaded in the left cabin 21 and the right cabin 22 simultaneously, and the flexibility of ship operation is improved.

In an embodiment of the present invention, a first insulating layer 41 is disposed outside the air chamber 5, and a second insulating layer 42 is disposed outside the communication pipe 6. The first insulating layer 41 and the second insulating layer 42 both have a heat insulating function, and are protected from the outside by the low-temperature gas. The end of the communication pipe 6 may be disposed at the symmetrical center of the top plate 51, or may be connected to a position deviating from the symmetrical center on the top plate 51 as in the embodiment of the present invention, and those skilled in the art may adjust the end according to the model and the operation condition of the ship.

The invention also provides a liquefied gas carrier as shown in fig. 1, wherein a plurality of liquid tanks 2 are arranged in the length direction of the body 1, and each liquid tank 2 is provided with the air chamber communication structure.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An inner cavity of a liquid tank (2) is divided into a left chamber (21) and a right chamber (22) by a longitudinal bulkhead (3), the tops of the left chamber (21) and the right chamber (22) are respectively communicated with an air chamber (5), the air chamber (5) protrudes in a direction away from the liquid tank (2) to form a gas phase loading space, and the top of the gas phase loading space is provided with a top plate (51); the gas-phase loading device is characterized by further comprising a communicating pipe (6) used for communicating the two gas-phase loading spaces, wherein the communicating pipe (6) is located outside the gas chamber (5), and the end part of the communicating pipe is connected with the top plate (51) and does not extend into the gas-phase loading spaces.

2. A gas chamber communication structure according to claim 1, wherein a first insulating layer (41) is applied to the outside of the gas chamber (5).

3. An air chamber communicating structure according to claim 1, wherein a second insulating layer (42) is laid on the outside of the communicating tube (6).

4. The air chamber communication structure according to claim 1, wherein an end of the communication pipe (6) is provided at a symmetrical center of the top plate (51).

5. A gas chamber communication structure according to claim 1, wherein said longitudinal bulkhead (3) is hermetically connected to the tank (2).

6. A liquefied gas carrier comprising a plurality of liquid tanks (2) arranged along the length of a hull (1), each liquid tank (2) being provided with the air chamber communication structure according to claim 1.