CN114802593A

CN114802593A - LNG fuel tank for double-fuel large container ship

Info

Publication number: CN114802593A
Application number: CN202210411839.9A
Authority: CN
Inventors: 彭俊惆; 孙亮; 孟嘉骏; 刘群; 王黎辉; 方海峰
Original assignee: Zhangjiagang Furui Heavy Equipment Co ltd
Current assignee: Zhangjiagang Furui Heavy Equipment Co ltd
Priority date: 2022-04-19
Filing date: 2022-04-19
Publication date: 2022-07-29

Abstract

The invention discloses an LNG fuel tank for a dual-fuel large container ship, which relates to the field of LNG fuel tanks and comprises an upper fixing frame and a lower fixing frame, wherein the upper fixing frame and the lower fixing frame are detachably installed in a buckling mode, a tank body is arranged on the inner wall of the lower fixing frame, and a fixing seat is connected and arranged between the upper fixing frame and the inner wall of the lower fixing frame. According to the invention, the tank body is placed between the upper fixing frame and the lower fixing frame, the weight of the tank body is borne by the spring steel plate and the lower fixing frame, and the spring steel plate can play a certain damping role in the bearing process.

Description

LNG fuel tank for double-fuel large container ship

Technical Field

The invention relates to the field of LNG fuel tanks, in particular to an LNG fuel tank for a double-fuel large container ship.

Background

The Liquefied Natural Gas (LNG) is the cleanest fossil energy on the earth, is colorless, tasteless, nontoxic and noncorrosive, has the volume about 1/625 of the volume of the same amount of gaseous natural gas, has the mass of only about 45% of the same volume of water, is prepared by purifying natural gas produced in a gas field, liquefying at a series of ultralow temperatures and transporting the liquefied natural gas by using an LNG ship. After the liquefied natural gas is combusted, the pollution to the air is very small, and the heat emitted by the liquefied natural gas is large, so the liquefied natural gas is a relatively advanced energy source.

The large container ship with double fuel generally uses LNG fuel tank as energy supply mechanism, i.e. the conventional oil energy source is replaced by liquefied natural gas.

However, the LNG fuel tanks used on the container ship have a large volume, and the container ship itself may generate a certain vibration during the movement, which may cause the collision damage of the LNG fuel tanks, and thus may cause leakage.

Disclosure of Invention

Therefore, the invention aims to provide an LNG fuel tank for a double-fuel large container ship to solve the technical problem that a common LNG fuel tank is damaged due to collision.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a marine LNG fuel jar of large-scale container of dual fuel, includes upper bracket and lower mount, upper bracket and lower mount are detachable buckle installation, the inner wall of mount is provided with a jar body down, the inner wall of upper bracket and lower mount connects and is provided with the fixing base, the top of fixing base is provided with spring steel plate, be connected with the connecting block between spring steel plate and the jar body, the jar body divide into inner tank and outer jar, spiral parcel is provided with the glass fiber layer between inner tank and the outer jar, be provided with the aluminium foil layer between the glass fiber layer, the upper bracket is provided with a plurality of springs with the both sides that lower mount inner wall is located spring steel plate, the inside of spring is provided with the set casing, the top activity of set casing is provided with the movable rod, the one end of movable rod is connected with the movable block.

Through adopting above-mentioned technical scheme, the spring can effectually cushion the vibrations power of jar side face, and the multiple shock attenuation of jar body is realized to cooperation spring steel board, has reduced the vibrations power that produces the jar body among the container ship motion process, and the LNG fuel in the inner tank has been guaranteed with the aluminium foil layer on the glass fiber layer can keep the low temperature state, and the heat preservation effect is better.

The invention is further provided that the front surface of the tank body is provided with a positioning shell, and the inner wall of the positioning shell is provided with a detection probe.

Through adopting above-mentioned technical scheme, the location shell is collected the gas of jar body valve department, and the cooperation test probe is monitored, in time feeds back the condition of revealing taking place.

The invention is further provided that the contact surface of the connecting block and the tank body is provided with a rubber layer.

Through adopting above-mentioned technical scheme, the rubber layer can prevent the rigid contact between connecting block and the jar body.

The invention is further arranged in such a way that damping oil is filled in the fixed shell, and the top of the movable block is provided with a through hole.

By adopting the technical scheme, the damping oil can buffer the movement speed of the movable block in the fixed shell, and a better shock buffering effect is achieved.

The invention is further arranged in that a vacuum pumping layer is arranged between the inner tank and the outer tank.

Through adopting above-mentioned technical scheme, the thermal-insulated effect of keeping warm of jar body can further be promoted on the evacuation layer.

In summary, the invention mainly has the following beneficial effects:

1. according to the invention, the tank body is placed between the upper fixing frame and the lower fixing frame, the weight of the tank body is borne by the spring steel plate and the lower fixing frame, and the spring steel plate can play a certain damping role in the bearing process;

2. the tank body is composed of the inner tank and the outer tank, the glass fiber layer is spirally wrapped between the inner tank and the outer tank, heat exchange between the inner tank and the outer tank is reduced through the glass fiber layer, the aluminum foil layer arranged between the glass fiber layers reduces the heat radiation effect, the LNG fuel in the inner tank can be kept in a low-temperature state, and the heat preservation effect is better.

Drawings

FIG. 1 is a front cross-sectional view of the present invention;

FIG. 2 is a sectional view showing the internal structure of the can body of the present invention;

fig. 3 is a sectional view showing an internal structure of the set cover according to the present invention.

In the figure: 1. an upper fixing frame; 2. a lower fixing frame; 3. a tank body; 4. a positioning shell; 5. detecting a probe; 6. a fixed seat; 7. a spring steel plate; 8. connecting blocks; 9. an inner tank; 10. an outer tank; 11. a glass fiber layer; 12. an aluminum foil layer; 13. a spring; 14. a stationary case; 15. a movable rod; 16. a movable block; 17. and (6) a via hole.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

The following describes an embodiment of the present invention based on its overall structure.

An LNG fuel tank for a dual-fuel large container ship is disclosed, as shown in FIGS. 1-3, which comprises an upper fixing frame 1 and a lower fixing frame 2, wherein the upper fixing frame 1 and the lower fixing frame 2 are detachably mounted in a buckling manner or fixedly mounted in a bolt manner, and structures capable of achieving corresponding fixing effects can be used, the inner wall of the lower fixing frame 2 is provided with a tank body 3, the inner walls of the upper fixing frame 1 and the lower fixing frame 2 are connected with a fixing seat 6, the top of the fixing seat 6 is provided with a spring steel plate 7, a connecting block 8 is connected between the spring steel plate 7 and the tank body 3, the tank body 3 is divided into an inner tank 9 and an outer tank 10, a glass fiber layer 11 is spirally wrapped between the inner tank 9 and the outer tank 10, an aluminum foil layer 12 is arranged between the glass fiber layers 11, the tank body 3 is composed of the inner tank 9 and the outer tank 10, the glass fiber layer 11 is spirally wrapped between the inner tank 9 and the outer tank 10, and heat exchange between the inner tank 9 and the outer tank 10 is reduced by the glass fiber layer 11, the aluminum foil layer 12 arranged between the glass fiber layers 11 reduces the heat radiation effect, ensures that the LNG fuel in the inner tank 9 can keep a low-temperature state, has a better heat preservation effect, the tank body 3 consists of the inner tank 9 and the outer tank 10, the glass fiber layer 11 is spirally wrapped between the inner tank 9 and the outer tank 10, reduces the heat exchange between the inner tank 9 and the outer tank 10 through the glass fiber layer 11, the aluminum foil layer 12 arranged between the glass fiber layers 11 reduces the heat radiation effect, ensures that the LNG fuel in the inner tank 9 can keep a low-temperature state, the upper fixing frame 1 and the lower fixing frame 2 with better heat preservation effect are provided with a plurality of springs 13 at two sides of the spring steel plate 7 on the inner wall, the fixed shell 14 is arranged inside the springs 13, the movable rod 15 is movably arranged at the top of the fixed shell 14, one end of the movable rod 15 is connected with a movable block 16, and the tank body 3 is placed between the upper fixing frame 1 and the lower fixing frame 2, the weight of the tank body 3 is borne by the spring steel plate 7 and the lower fixing frame 2, the spring steel plate 7 can also play a certain damping role in the bearing process, further, a plurality of damping mechanisms are arranged between the upper fixing frame 1 and the lower fixing frame 2, each damping mechanism comprises a spring 13, a fixed shell 14 and a movable rod 15, the springs 13 can effectively buffer the vibration force on the side face of the tank body 3, multiple damping of the tank body 3 is realized by matching the spring steel plate 7, and the vibration force generated by the tank body 3 in the motion process of the container ship is reduced.

Referring to fig. 1, a positioning shell 4 is arranged on the front side of a tank 3, a detection probe 5 is arranged on the inner wall of the positioning shell 4, the positioning shell 4 collects gas at a valve of the tank 3, the detection probe 5 is used for monitoring, the leakage condition is fed back in time, when the leakage occurs, the detection probe 5 senses natural gas, a monitoring unit sends a signal to remind people, a rubber layer is arranged on the contact surface between a connecting block 8 and the tank 3, and the rubber layer can prevent rigid contact between the connecting block 8 and the tank 3.

Referring to fig. 2 and 3, the fixed shell 14 is filled with damping oil, the top of the movable block 16 is provided with a through hole 17, the damping oil can buffer the movement speed of the movable block 16 in the fixed shell 14, so as to achieve a better shock buffering effect, and a vacuum layer is arranged between the inner tank 9 and the outer tank 10, so as to further improve the heat preservation and insulation effect of the tank 3.

The working principle of the invention is as follows: the tank body 3 is placed between an upper fixing frame 1 and a lower fixing frame 2, the weight of the tank body 3 is born by a spring steel plate 7 and the lower fixing frame 2, the spring steel plate 7 can also play a certain shock absorption role in the bearing process, furthermore, a plurality of shock absorption mechanisms are arranged between the upper fixing frame 1 and the lower fixing frame 2, each shock absorption mechanism comprises a spring 13, a fixed shell 14 and a movable rod 15, the spring 13 can effectively buffer the shock force on the side surface of the tank body 3, the damping oil in the fixed shell 14 is matched, the movable rods 15 and the movable blocks 16 extrude the damping oil in the compression process of the spring 13, the damping oil penetrates out of the through holes 17, the damping oil can reduce the movement speed of the movable rods 15, the multiple shock absorption of the tank body 3 is realized by matching with the spring steel plate 7, the shock force generated to the tank body 3 in the movement process of the container ship is reduced, the tank body 3 comprises an inner tank 9 and an outer tank 10, spiral coating has glass fiber layer 11 between inner tank 9 and the outer jar 10, has reduced the heat exchange between inner tank 9 and the outer jar 10 through glass fiber layer 11, and the aluminium foil layer 12 that sets up between the glass fiber layer 11 has reduced the heat radiation effect, has guaranteed that the LNG fuel in the inner tank 9 can keep the low temperature state, and the heat preservation effect is better.

Although embodiments of the present invention have been shown and described, it is intended that the present invention should not be limited thereto, that the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples, and that modifications, substitutions, variations or the like, which are not inventive and may be made by those skilled in the art without departing from the principle and spirit of the present invention and without departing from the scope of the claims.

Claims

1. The utility model provides a marine LNG fuel jar of large-scale container of dual fuel, includes upper bracket (1) and lower mount (2), its characterized in that: the upper fixing frame (1) and the lower fixing frame (2) are detachably mounted in a buckling mode, a tank body (3) is arranged on the inner wall of the lower fixing frame (2), a fixing seat (6) is connected with the inner wall of the upper fixing frame (1) and the inner wall of the lower fixing frame (2), a spring steel plate (7) is arranged at the top of the fixing seat (6), a connecting block (8) is connected between the spring steel plate (7) and the tank body (3), the tank body (3) is divided into an inner tank (9) and an outer tank (10), a glass fiber layer (11) is spirally wrapped between the inner tank (9) and the outer tank (10), an aluminum foil layer (12) is arranged between the glass fiber layer (11), a plurality of springs (13) are arranged on two sides, located on the spring steel plate (7), of the inner wall of the upper fixing frame (1) and the inner wall of the lower fixing frame (2), a fixing shell (14) is arranged inside the springs (13), the top of the fixed shell (14) is movably provided with a movable rod (15), and one end of the movable rod (15) is connected with a movable block (16).

2. An LNG fuel tank for a dual-fuel large container ship as claimed in claim 1, wherein: the front of the tank body (3) is provided with a positioning shell (4), and the inner wall of the positioning shell (4) is provided with a detection probe (5).

3. An LNG fuel tank for a dual-fuel large container ship as claimed in claim 1, wherein: and a rubber layer is arranged on the contact surface of the connecting block (8) and the tank body (3).

4. An LNG fuel tank for a dual-fuel large container ship as claimed in claim 1, wherein: the inside of set casing (14) is filled with damping oil, via hole (17) have been seted up at the top of movable block (16).

5. An LNG fuel tank for a dual-fuel large container ship as claimed in claim 1, wherein: and a vacuumizing layer is arranged between the inner tank (9) and the outer tank (10).