CN216861736U

CN216861736U - Changjiang river trunk LNG tank transport ship

Info

Publication number: CN216861736U
Application number: CN202122775582.9U
Authority: CN
Inventors: 姚智衡; 姚奉
Original assignee: Hubei Dongchuan Heavy Industry Co ltd
Current assignee: Hubei Dongchuan Heavy Industry Co ltd
Priority date: 2021-11-14
Filing date: 2021-11-14
Publication date: 2022-07-01
Anticipated expiration: 2031-11-14

Abstract

The utility model provides a Yangtze river trunk LNG tank transport ship.A main ship body comprises a bilge structure positioned at the bottom layer, the upper layer of the bilge structure is a double-layer bottom empty cabin structure, the upper layer of the double-layer bottom empty cabin structure is a main deck structure, and a first main deck structure is arranged on one side of the head part of the main deck structure; a lifting deck structure is arranged on one side of the tail part of the main deck structure; a propeller power device and rudder equipment are arranged at the tail part of the main ship body; a tail second deck, a tail third deck, a tail fourth deck and a tail fifth deck are sequentially arranged on the upper layer of the lifting deck structure; the upper layer of the first main deck structure is sequentially provided with a first second deck, a first third deck, a first fourth deck and a first fifth deck; and an LNG tank box supporting frame is fixed on the container deck of the main deck structure and used for fixing an LNG tank box. The transport ship can be used for transporting standard LNG tank boxes on the Yangtze river trunk, and the LNG tank boxes are loaded and transported to the inner river line of the Yangtze river from the sea entrance of the Shanghai, so that the use requirement of the LNG in the Yangtze river trunk is met finally.

Description

Changjiang river trunk LNG tank transport ship

Technical Field

The utility model belongs to the technical field of LNG tank transport ships, and particularly relates to an LNG tank transport ship for Yangtze river main lines.

Background

Liquefied Natural Gas (LNG) is used as clean energy and is widely applied in the industrial production process, a special ship or an oil tank truck is usually adopted as a transportation mode, the existing LNG tank transport ship is mainly used for marine transportation and cannot be directly used for inland river transportation of the Yangtze river main line, however, with continuous popularization of LNG clean energy, the demand of LNG along the Yangtze river is continuously increased, so that the transportation problem of the standard LNG tank of the whole Yangtze river main line (Shanghai-Yichang section) needs to be considered, and no special ship for transporting the LNG tank is available on the Yangtze river main line at present. Based on the situation, the Yangtze river trunk LNG tank transport ship needs to be developed and designed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides a Yangtze-river trunk LNG tank transport ship which can be used for realizing the transportation of standard LNG tanks on a Yangtze-river trunk, loading and transporting the standard LNG tanks from a sea entrance of Shanghai to the inner river line of Yangtze river, and finally meeting the use requirement of the Yangtze-river trunk LNG.

In order to achieve the technical features, the utility model is realized as follows: the Yangtze river trunk LNG tank transport ship comprises a main ship body, wherein the main ship body comprises a bilge structure positioned at the bottom layer, the upper layer of the bilge structure is a double-layer bottom empty cabin structure, the upper layer of the double-layer bottom empty cabin structure is a main deck structure, and a first main deck structure is arranged on one side of the head part of the main deck structure; a lifting deck structure is arranged on one side of the tail part of the main deck structure; a propeller power device and rudder equipment are arranged at the tail part of the main ship body; a tail second deck, a tail third deck, a tail fourth deck and a tail fifth deck are sequentially arranged on the upper layer of the lifting deck structure; the upper layer of the first main deck structure is sequentially provided with a first second deck, a first third deck, a first fourth deck and a first fifth deck; and an LNG tank box supporting frame is fixed on the container deck of the main deck structure and used for fixing an LNG tank box.

The bilge structure comprises a plurality of side empty load chambers and side empty chambers which are positioned at two sides of a ship body, and a plurality of ballast tanks and empty chambers are arranged between the side empty load chambers and the side empty chambers; an initial cabin and an initial cabin are arranged on one side of the head of the ship body, and initial side cabins are arranged on two outer sides of the initial cabin.

The double-layer bottom empty cabin structure comprises a tail anchor chain cabin, a first domestic sewage storage cabin and a second domestic sewage storage cabin, wherein the tail anchor chain cabin is positioned on one side of the tail of the ship body; the tail ballast tank is positioned at two sides of the tail of the ship body; a cabin is arranged between the tail ballast tanks; the ship further comprises a first anchor chain cabin and a first side push/emergency fire pump cabin which are positioned at the head of the ship body.

The first crew room and the CO are sequentially arranged on the lifting deck structure from the starboard to the port₂The system comprises a room, an emergency power distribution room, a first toilet room and a first tool room; the CO is₂The side of the room is sequentially provided with a spare part warehouse, a storage battery room, a cabin duty room and machine hatches which are symmetrically arranged.

The first main deck structure adopts a front wall to form a semi-circular arc, and a refrigerator, a kitchen, a restaurant, a storeroom for going up and down stairs, a first toilet and a second tool room are sequentially arranged in the area from right to left.

An isolation layer is arranged on the tail second deck;

a self-use LNG tank box for self-use of the main ship body is arranged on the tail third deck; a fuel preparation room is arranged on the side edge of the self-use LNG tank; the periphery of the self-use LNG tank box and the fuel preparation room is provided with an isolation room;

the tail fourth plate adopts a steel plate net deck.

Anchor mooring operation areas are arranged on the left side and the right side of the first deck and the second deck, the front wall of the first deck and the second deck is in a semi-circular arc shape, and an up-down staircase, a second toilet, a plurality of second crew rooms and a function hall are sequentially arranged in the area from right to left;

the first third deck is the deck of circular arc type, and the tail reaches and controls the pavement and leads to entirely, from right to left respectively: the washroom, the toilet, the first stair room, the turbine long room, the single crew room and the middle are longitudinal passages; a double crew room, a single crew room, a second stair-climbing room, a small passage and a garbage can storage room are arranged leftwards;

the first fourth deck is the driving deck of circular arc type, and the walkways all around are all expert, do respectively from right to left: a third lavatory, a large auxiliary room, a third upstairs and downstairs, a middle longitudinal channel, a captain, a fourth upstairs and downstairs, a fourth lavatory, and a driver's cab.

The first fifth deck is an arc-shaped ceiling deck, a gravity water tank is arranged on the port, and a ladder way with ladder openings is arranged on the port and extends to the driving deck; the mast, the electric signal equipment and the ship nameplate are arranged.

The propeller power device adopts a tail engine type, a double engine, a double shaft system and a double-screw propeller ship, the propulsion device adopts two marine LNG/diesel dual-fuel medium-speed diesel engines, and two fixed-pitch propellers are driven by two reduction gear boxes and a transmission shaft system;

the system also comprises a main power generation device, wherein the main power generation device consists of two diesel generator sets and a berthing diesel generator set;

the fixed-pitch propeller adopts a nickel-aluminum bronze four-blade efficient propeller.

The rudder equipment adopts two streamline suspension flap rudders, and energy-saving rudder ball energy-saving rectifying fins are arranged on rudder blades; two electric hydraulic steering engines are adopted, the two steering engines run synchronously, and no connecting rod is arranged for synchronization;

the two bow anchors are also included, and a matched anchor chain and a matched set are also included; the first mooring winch is arranged on the stern main deck; a single-chain wheel windlass is respectively arranged on the structures of the port and starboard lifting decks, and a single-roller cavel cable guide is arranged in a matching manner.

The utility model has the following beneficial effects:

1. the transport ship can be used for transporting standard LNG tanks on the Yangtze river trunk line, and the LNG tanks are loaded and transported to the inner river line of the Yangtze river from the sea entrance of Shanghai, so that the use requirement of the Yangtze river trunk line LNG is met finally.

2. The bilge structure is used for supporting the whole main ship body. The double-layer bottom empty cabin structure can be used for installing an anchor chain system of the whole ship body and a corresponding fire pump system.

3. The above-mentioned elevated deck structure can be used for arranging and installing the whole tail main deck structure.

4. The first main deck structure is mainly used for providing the function of dining.

5. The LNG clean energy can be provided for the ship body through the self-use LNG tank box and the fuel preparation room, and the power for ship navigation can achieve the purposes of energy conservation and environmental protection.

6. The first and second deck plates can be used for realizing anchoring operation of the ship.

7. The third board can provide rest room for crew.

8. The propeller power device can be used for providing power for ship navigation.

Drawings

The utility model is further illustrated by the following figures and examples.

FIG. 1 is a front view of the present invention

FIG. 2 is a view taken along the line A of FIG. 1 according to the present invention.

Fig. 3 is a view of the bilge structure of the present invention.

Fig. 4 is a structure diagram of the double-layer bottom empty cabin of the utility model.

FIG. 5 is an enlarged rear view of the double-bottomed capsule structure of FIG. 4 according to the present invention.

Figure 6 is a view of the main deck structure of the present invention.

FIG. 7 is a view B-B of FIG. 1 according to the present invention.

Fig. 8 is a view of the construction of the aft second deck and the fore second deck of the present invention.

Figure 9 is a view of the configuration of the aft third deck and the fore third deck of the present invention.

Fig. 10 is a view of the structure of the tail fourth deck of the present invention.

Fig. 11 is a view of the structure of the fourth deck of the present invention.

Fig. 12 is a view of the configuration of the aft fifth deck and the fore fifth deck of the present invention.

Fig. 13 is a view from C-C of fig. 12 in accordance with the present invention.

In the figure: the system comprises a bilge structure 1, a double-layer bottom empty cabin structure 2, a main deck structure 3, a propeller power device 4, a rudder device 5, a tail second deck 6, a tail third deck 7, a tail fourth deck 8, a tail fifth deck 9, a head second deck 10, a head third deck 11, a head fourth deck 12, a head fifth deck 13, an LNG tank support frame 14 and an LNG tank 15;

ballast tank 101, side empty tank 102, side empty tank 103, empty tank 104, head empty tank 105, head side tank 106;

a tail chain chamber 201, a first domestic sewage storage chamber 202, a second domestic sewage storage chamber 203, a cabin 204, a tail ballast tank 205, a first side push/emergency fire pump chamber 206 and a first anchor chain chamber 207;

a first crew room 301, a CO2 room 302, an emergency distribution room 303, a first toilet room 304, a first tool room 305, a spare part room 306, a battery room 307, a cabin duty room 308, a machine hatch 309, a refrigerator 310, a kitchen 311, a restaurant 312, an upstairs and downstairs room 313, a first lavatory 314 and a second tool room 315, a raised deck structure 316, a head main deck structure 317;

the LNG/diesel dual-fuel medium-speed diesel engine comprises a marine LNG/diesel dual-fuel medium-speed diesel engine 401, a reduction gearbox 402, a transmission shafting 403 and a fixed-pitch propeller 404;

an LNG tank 701, a fuel preparation room 702, and an isolation room 703;

a steel mesh deck 801;

an anchor handling area 1001, a second lavatory 1002, a second crew room 1003;

a single crew room 1101, a turbine long room 1102, a washroom 1103, a large auxiliary room 1201, a cab 1202, and a captain room 1203.

Detailed Description

Embodiments of the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1-13, the transportation ship for the LNG tank box in the Yangtze river trunk line comprises a main ship body, wherein the main ship body comprises a bilge structure 1 positioned at the bottom layer, the upper layer of the bilge structure 1 is a double-layer bottom empty cabin structure 2, the upper layer of the double-layer bottom empty cabin structure 2 is a main deck structure 3, and a first main deck structure 317 is arranged on one side of the head part of the main deck structure 3; a lifting deck structure 316 is arranged on one side of the tail part of the main deck structure 3; a propeller power device 4 and rudder equipment 5 are arranged at the tail part of the main ship body; the upper layer of the elevated deck structure 316 is sequentially provided with a tail second deck 6, a tail third deck 7, a tail fourth deck 8 and a tail fifth deck 9; the upper layer of the first main deck structure 317 is sequentially provided with a first second deck 10, a first third deck 11, a first fourth deck 12 and a first fifth deck 13; an LNG tank support frame 14 is fixed to the container deck of the main deck structure 3 to fix an LNG tank 15. The transport ship can be used for transporting standard LNG tanks on the Yangtze river trunk line, and the LNG tanks are loaded and transported to the inner river line of the Yangtze river from the sea entrance of Shanghai, so that the use requirement of the Yangtze river trunk line LNG is met finally.

Further, the bilge structure 1 comprises a plurality of side empty chambers 102 and side empty chambers 103 which are positioned at two sides of the ship body, and a plurality of ballast chambers 101 and empty chambers 104 are arranged between the side empty chambers 102 and the side empty chambers 103; an initial cabin 107 and an initial cabin 105 are arranged on one side of the head of the ship body, and initial side cabins 106 are arranged on two outer sides of the initial cabin 105. The bilge structure 1 described above is used to support the entire main hull.

Further, the double-layer bottom empty cabin structure 2 comprises a tail chain locker 201, a first domestic sewage storage cabin 202 and a second domestic sewage storage cabin 203 which are positioned at one side of the tail part of the ship body; and further includes tail ballast tanks 205 located on both sides of the hull aft; a cabin 204 is arranged between the tail ballast tanks 205; also included are a first anchor chain bay 207 and a first side push/emergency fire pump bay 206 at the head of the hull. The double-bottom hatch frame 2 described above can be used for the installation of a hawse system of a whole ship hull and a corresponding fire pump system.

Further, the first crew room 301 and the CO are arranged on the elevated deck structure 316 from starboard to port in sequence₂A room 302, an emergency power distribution room 303, a first toilet room 304, and a first tool room 305; the CO is₂The side of the room 302 is sequentially provided with a spare part warehouse 306, a storage battery room 307, a cabin duty room 308 and symmetrically arranged machine hatches 309. The entire tail main deck structure can be deployed for installation by the elevated deck structure 316 described above.

Further, the front main deck structure 317 forms a semi-circular arc shape using the front wall, and the refrigerator 310, the kitchen 311, the restaurant 312, the upper and lower staircase rooms 313, the first lavatory 314, and the second lavatory 315 are sequentially disposed from right to left in this area. The primary main deck structure 317 as described above serves primarily to provide dining functionality.

Further, an isolation layer 601 is arranged on the second tail plate 6; the isolation layer 601 is provided for isolation purposes.

Further, a self-use LNG tank 701 for self-use of the main hull is provided on the tail third deck 7; a fuel preparation room 702 is arranged at the side of the self-service LNG tank 701; the isolation room 703 is arranged around the self-service LNG tank 701 and the fuel preparation room 702; the self-use LNG tank 701 and the fuel preparation room 702 are arranged, so that LNG clean energy can be provided for a ship body, the power for ship navigation is provided, and the purposes of energy conservation and environmental protection are achieved.

Further, the tail fourth plate 8 adopts a steel plate net deck 801. The steel plate net deck 801 can achieve a certain protection purpose.

Further, anchor mooring work areas 1001 are arranged on the left side and the right side of the first deck 10, the front wall of the first deck is in a semi-circular arc shape, and an ascending and descending staircase, a second toilet 1002, a plurality of second crew rooms 1003 and a function hall are sequentially arranged in the area from right to left. The first and second deck plates 10 described above can perform the mooring work of the ship.

Further, the first third board 11 is a circular arc deck, and the tail and the left and right walkways are all through, and respectively from right to left: a washroom 1103, a lavatory, a first stairwell, a turbine bench 1102, a single crew room 1101, a central longitudinal aisle; and a double crew room, a single crew room, a second upstairs and downstairs, a small passage and a garbage can storage room are arranged leftwards. The rest room of the crew can be provided by the above-mentioned bow-third board 11.

Further, the first fourth plate 12 is a circular arc-shaped driving deck, and the walkways all around are completely open and respectively from right to left: a third lavatory, a grand cubicle 1201, a third upstand and downstairs, a middle longitudinal aisle, a captain 1203, a fourth upstand and downstairs, a fourth lavatory, and a cab 1202. The steering operation of the ship is mainly performed by the above-described bow-fourth deck 12.

Further, the first fifth deck 13 is an arc ceiling deck, a gravity water tank is arranged on the port, and a ladder way with a ladder opening is arranged on the port and extends to the driving deck; the mast, the electrical signal equipment and the ship nameplate are arranged. By the first fifth deck 13 acting as a ceiling deck, it can be used for providing communication and electrical of the vessel.

Further, the propeller power device 4 adopts a tail engine type, double engines, a double-shaft system and a double-screw propeller ship, the propulsion device adopts two marine LNG/diesel dual-fuel medium-speed diesel engines 401, and two fixed-pitch propellers 404 are driven through two reduction gear boxes 402 and a transmission shaft system 403. The propeller power plant 4 can be used to provide power for the sailing of the ship. In the working process, the marine LNG/diesel dual-fuel medium-speed diesel engine 401 drives the reduction gearbox 402, the reduction gearbox 402 drives the transmission shafting 403, the transmission shafting 403 drives the fixed-pitch propeller 404, and the sailing of the ship is finally realized.

Furthermore, the system also comprises a main power generation device, wherein the main power generation device consists of two diesel generator sets and a berth diesel generator set. The main power generation device can be used for supplying power to a ship.

Further, the fixed-pitch propeller 404 is a nickel-aluminum bronze four-blade high-efficiency propeller. A good pushing effect can be achieved by the above-mentioned fixed pitch propeller 404.

Furthermore, the rudder equipment 5 adopts two streamline suspension flap rudders, and an energy-saving rudder ball energy-saving rectifying fin is arranged on a rudder blade; two electric hydraulic steering engines are adopted, the two steering engines run synchronously, and no connecting rod is arranged for synchronization; the two bow anchors are also included, and the anchor chain and the matching parts are matched; the first mooring winch is arranged on the stern main deck; a single-chain wheel anchor winch is respectively arranged on the port and starboard lifting deck structures 316, and a single-roller cavel cable guide is arranged in a matched manner.

Example 2:

1. the application of the ship body is as follows: the vessel is a Yangtze river trunk 116mLNG transport vessel, mainly carrying standard LNG standard container tanks, which are constructed to be suitable for loading 20 'and 40' LNG tank containers on deck.

2. The main parameters are as follows: the total length is as follows: 116.00 m; the water line length is as follows: 114.555 m; the length between the vertical lines is as follows: 113.00 m; the shape width: 22.60 m; and (3) depth of form: 5.10 m; designing draft: 3.80 m; rib distance: 0.511 m; crew: 12 persons, bed 14; carrying cargo: 6230 t.

3. The performance is as follows:

speed of flight: when the draft is designed to be 3.80m, the ship body is in a smooth and pollution-free state, and the test-flight speed is 20.0 km/h when the host machine generates the maximum continuous power and the rated rotating speed in a calm deep water area with wind power less than the third level of the Typha wind level.

Endurance: the endurance of the ship is 200 hours according to the full-load sailing behavior; equipped with LNG gas 80m³。

Stability: the ship stability meets the requirements of 'inland river ship legal inspection technical rules' (2019) and change notification thereof, and 'natural gas fuel power ship specifications' (2017) and change notification thereof on the Changjiang LNG tank container ship.

Floating state: the ship is in a floating state basically floating in a full-load departure design.

Maneuverability: the ship is provided with 2 flapped rudders, a bow thruster is arranged on a bow FR.207, and the full-speed rotation diameter is about 2 times of the ship length.

Freeboard: the ship has a freeboard A/B level of 1.3m, and meets the requirements of inland river ship legal inspection technical rules (2019) and change reports thereof on deck container ships.

4. The ship type and the structure form are as follows:

the ship type: the ship is an LNG tank type container transport ship with double engines, double propellers, double rudders, stern engines, axe type bow, deck-mounted container tanks and a head cab, and is provided with streamline suspension flap rudders and bow thrusters and is suitable for operation in various ports from the sea to the Yichang sea line on the main line of the Yangtze river.

The structural form is as follows: the ship is of an all-electric welding steel structure, and the cargo hold area is of a double-bottom and double-side longitudinal framework type. The engine room to the tail are single-bottom double-side single decks, the ship bottom and the side are in a transverse framework type, and the main deck is in a longitudinal framework type. The whole ship is provided with 12 transverse bulkheads and 2 longitudinal bulkheads (inner side walls).

5. Welding:

the flat welding, the vertical fillet welding, the flat fillet welding, the transverse welding and the overhead welding in the ship structure adopt manual electric arc welding or gas electric welding; the jointed board adopts submerged arc welding for the joint. The related requirements are described in the specification of welding modes and specifications.

Claims

1. Yangtze river trunk LNG tank transport ship, its characterized in that: the ship comprises a main ship body, wherein the main ship body comprises a bilge structure (1) positioned at the bottom layer, the upper layer of the bilge structure (1) is a double-layer bottom empty cabin structure (2), the upper layer of the double-layer bottom empty cabin structure (2) is a main deck structure (3), and a first main deck structure (317) is arranged on one side of the head part of the main deck structure (3); a lifting deck structure (316) is arranged on one side of the tail part of the main deck structure (3); a propeller power device (4) and rudder equipment (5) are arranged at the tail part of the main ship body; a tail second deck (6), a tail third deck (7), a tail fourth deck (8) and a tail fifth deck (9) are sequentially arranged on the upper layer of the lifting deck structure (316); the upper layer of the first main deck structure (317) is sequentially provided with a first second deck (10), a first third deck (11), a first fourth deck (12) and a first fifth deck (13); an LNG tank support frame (14) for fixing an LNG tank (15) is fixed to the first main deck structure (317) of the main deck structure (3).

2. The Yangtze river trunk LNG tank transport ship of claim 1, characterized in that: the bilge structure (1) comprises a plurality of side empty cargo tanks (102) and side empty tanks (103) which are positioned at two sides of a ship body, and a plurality of ballast tanks (101) and empty tanks (104) are arranged at positions between the side empty cargo tanks (102) and the side empty tanks (103); an initial cabin (107) and an initial cabin (105) are arranged on one side of the head of the ship body, and initial side cabins (106) are arranged on two outer sides of the initial cabin (105).

3. The Yangtze river trunk LNG tank transport ship of claim 1, characterized in that: the double-layer bottom empty cabin structure (2) comprises a tail anchor chain cabin (201) positioned on one side of the tail of the ship body, a first domestic sewage storage cabin (202) and a second domestic sewage storage cabin (203); the ship further comprises tail ballast tanks (205) positioned at two sides of the tail part of the ship body; a cabin (204) is arranged between the tail ballast tanks (205); the ship further comprises a first anchor chain cabin (207) and a first side push/emergency fire pump cabin (206) which are positioned at the head of the ship body.

4. The Yangtze river trunk LNG tank transport vessel of claim 1, wherein: the first crew room (301) and the CO are arranged on the lifting deck structure (316) from starboard to port in sequence₂A room (302), an emergency power distribution room (303), a first toilet room (304) and a first tool room (305); the CO is₂The side of the room (302) is provided with a spare part warehouse (306), a storage battery room (307), a cabin duty room (308) and machine hatches (309) which are symmetrically arranged.

5. The Yangtze river trunk LNG tank transport vessel of claim 1, wherein: the first main deck structure (317) forms a semi-circular arc shape by adopting a front wall, and a refrigerator (310), a kitchen (311), a restaurant (312), an upper and lower staircase storeroom (313), a first toilet (314) and a second tool room (315) are sequentially arranged in the area from right to left.

6. The Yangtze river trunk LNG tank transport vessel of claim 1, wherein: an isolation layer (601) is arranged on the tail second deck (6);

a self-use LNG tank box (701) for self use of the main hull is arranged on the tail third deck (7); a fuel preparation room (702) is arranged at the side of the self-use LNG tank (701); the periphery of the self-use LNG tank (701) and the fuel preparation room (702) is provided with an isolation room (703);

the fourth deck (8) at the tail adopts a steel plate net deck (801).

7. The Yangtze river trunk LNG tank transport vessel of claim 1, wherein: an anchor mooring operation area (1001) is arranged on the left side and the right side of the first deck (10), the front wall of the first deck is in a semi-circular arc shape, and an up-down staircase, a second toilet (1002), a plurality of second crew rooms (1003) and a function hall are sequentially arranged in the area from right to left;

the first third deck (11) is a circular arc deck, the tail and the left and right walkways are all communicated, and the first deck and the second deck are respectively as follows from right to left: a washroom (1103), a toilet, a first stairwell, a turbine long room (1102), a single crew room (1101), a central longitudinal passage; a double crew room, a single crew room, a second upstairs and downstairs, a small passage and a garbage can storage room are arranged leftwards;

the first fourth deck (12) is a circular arc-shaped driving deck, the walkways all around are completely communicated, and the driving deck is respectively arranged from right to left: a third lavatory, a grand cubicle (1201), a third upstand and downstairs, a middle longitudinal aisle, a captain (1203), a fourth upstand downstairs, a fourth lavatory, and a driver's cab (1202).

8. The Yangtze river trunk LNG tank transport ship of claim 1, characterized in that: the first fifth deck (13) is an arc-shaped ceiling deck, a gravity water tank is arranged on the port, and a ladder way with a ladder opening is arranged on the port and extends to the driving deck; the mast, the electric signal equipment and the ship nameplate are arranged.

9. The Yangtze river trunk LNG tank transport vessel of claim 1, wherein: the propeller power device (4) adopts a tail engine type, a double engine, a double-shaft system and a double-propeller ship, the propulsion device adopts two marine LNG/diesel dual-fuel medium-speed diesel engines (401), and two fixed-pitch propellers (404) are driven by two reduction gear boxes (402) and a transmission shaft system (403);

the fixed-pitch propeller (404) adopts a nickel-aluminum bronze four-blade high-efficiency propeller.

10. The Yangtze river trunk LNG tank transport vessel of claim 1, wherein: the rudder equipment (5) adopts two streamline suspension flap rudders, and the rudder blade is provided with an energy-saving rudder ball energy-saving rectifying fin; two electric hydraulic steering engines are adopted, the two steering engines run synchronously, and no connecting rod is arranged for synchronization;

the two bow anchors are also included, and the anchor chain and the matching parts are matched; the first mooring winch is arranged on the stern main deck; a single-chain wheel winch is respectively arranged on the port and starboard lifting deck structures (316), and a single-roller cavel cable guide is arranged in a matched manner.