CN113659459A

CN113659459A - A large-scale container ship reefer power distribution system and container ship

Info

Publication number: CN113659459A
Application number: CN202110706413.1A
Authority: CN
Inventors: 李晓奎; 潘银飞; 陈伟; 曹峰
Original assignee: Shanghai Jiangnan Changxing Shipbuilding Co Ltd
Current assignee: Shanghai Jiangnan Changxing Shipbuilding Co Ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-11-16
Anticipated expiration: 2041-06-24
Also published as: CN113659459B

Abstract

The invention relates to a large-scale container ship refrigerated box power distribution system and a container ship. The system includes a high-voltage power supply, a transformer, a refrigerated container power sub-box, a refrigerated socket box, a high-voltage cable, a bus bar, and a cable; The transformer transmits high-voltage electricity; the transformer transforms the high-voltage electricity provided by the high-voltage power supply and sends it to the refrigerated container power sub-box through the busbar; the refrigerated container power sub-box supplies power to the refrigerated socket box through cables, and the system is used for container ships Refrigerated containers are powered. The invention uses the busbar to carry out power transmission between the transformer and the power sub-box of the reefer container, which reduces the use of a large number of cables, thereby avoiding the problems of cable channel congestion and difficulty in laying caused by the use of a large number of cables; and the busbar is a standard It can be pre-assembled at the stage of subsection, and can be directly spliced when the subsections are closed, which greatly improves the construction efficiency.

Description

Large container ship fridge power distribution system and container ship

Technical Field

The invention relates to the field of ship electrical systems, in particular to a power distribution system for a large container ship refrigeration box and a container ship.

Background

At present, the container ship gradually tends to be large-sized, the container ship is developed from 9400TEU to 15000TEU, and the container loading quantity is more and more at present to 23000TEU, and refrigerated containers are loaded in the large container ship and account for about 10% of the total number of the containers. In the existing refrigeration power distribution system, power transmission between equipment is mainly realized by cables, the current carrying capacity of cables with different specifications is different, and for power cables with the same voltage class, the larger the sectional area is, the larger the current carrying capacity is. The specification of the general AC440V power cable is mostly 3 x 95mm²Maximum not exceeding 3X 150mm²The refrigeration power system adopts a large amount of power cables, the diameter of the power cables is large, factors such as heat dissipation and the like are considered, a large amount of space of a cable channel is occupied, a large amount of cold box power supply cables are laid in the channels of the left side and the right side, congestion of the cable channel is caused, a lot of difficulties are caused for cable laying, and the cables are easily damaged in the laying process.

Disclosure of Invention

In order to solve the problem, the invention provides a large container ship refrigeration box power distribution system and a container ship, wherein the refrigeration box power distribution system is used for reducing the space occupied by cable arrangement, and the technical purpose of the invention is realized by the following technical scheme:

a large-scale container ship fridge power distribution system, is used for the container ship fridge power supply, the system includes high-voltage power, voltage transformer, electrical power of the container fridge divides the case, refrigerated socket case, high-voltage cable, mother arranges, cable; the high-voltage power supply transmits high voltage to the transformers through high-voltage cables; the transformer transforms the high-voltage power provided by the high-voltage power supply and then transmits the transformed high-voltage power to the electric branch box of the refrigerated container through the main discharge; the refrigerated container power sub-box supplies power to the refrigerated socket box through a cable.

Further, the high voltage power supply comprises a high voltage distribution board and a refrigerated container transformer screen, and the high voltage distribution board distributes power to the transformer through the refrigerated container transformer screen.

Furthermore, the bus bar is arranged in service channels on two sides of the ship body, the refrigerated container power distribution boxes are arranged in the service channels on two sides of the ship body, and the refrigerated container power distribution boxes are connected to the same bus bar; the refrigerated receptacle box is disposed adjacent to the refrigerated container.

Further, the container ship comprises a first container area, a second container area, a third container area and a fourth container area, wherein the first container area, the second container area, the third container area and the fourth container area are respectively close to the left side of the bow, the right side of the bow, the left side of the stern and the right side of the stern of the container ship.

Furthermore, the refrigerated container transformer screens comprise four refrigerated container transformer screens, and the four refrigerated container transformer screens are used for distributing power to transformers in the first container area, the second container area, the third container area and the fourth container area respectively.

Furthermore, the high-voltage power supply adopts radiation type power supply.

Furthermore, the refrigerated container and the refrigerated receptacle box are connected through a plug.

A large container ship comprises the power distribution system for the refrigeration box of the large container ship, and comprises a high-voltage power supply, a transformer, a refrigeration container power sub-box, a refrigeration socket box, a high-voltage cable, a busbar and a cable; the high-voltage power supply transmits high voltage to the transformers through high-voltage cables; the transformer transforms the high-voltage power provided by the high-voltage power supply and then transmits the transformed high-voltage power to the electric branch box of the refrigerated container through the main discharge; the refrigerated container power sub-box supplies power to the refrigerated socket box through a cable.

Compared with the prior art, the invention has the beneficial effects that the electric power transmission is carried out between the transformer and the electric power sub-box of the refrigeration box container by means of the busbar, so that the use of a large number of cables is reduced, and the problems of cable channel congestion and large laying difficulty caused by the use of a large number of cables are further avoided; and the busbar is a standard component, the busbar can be preassembled in a segmentation stage, and the busbar can be directly spliced when being segmented and closed, so that the construction efficiency is greatly improved.

Drawings

Fig. 1 is a schematic diagram of the refrigeration case power distribution system of a large container ship in the invention.

Fig. 2 is a schematic diagram of the application of the refrigeration box power distribution system of the large container ship in the container ship.

Fig. 3 is a schematic diagram of the regional division of a large container ship in the invention.

Fig. 4 is an enlarged view of the bow of fig. 2.

Fig. 5 is an enlarged view of the stern of fig. 2.

In the figure, 1, a high voltage distribution board; 2. a refrigerated container transformer panel; 3. a transformer; 4. a busbar; 5. electrically separating the refrigerated container; 6. a refrigerated outlet box; 7. a cable; 8. a high voltage cable; 9. a first container area; 10. a second container area; 11. a third container area; 12. a fourth container region; 13. a refrigerated container; 14. building a front island up and down; 15. a rear island cabin.

Detailed Description

The technical solution of the present invention is further described below with reference to specific embodiments:

a power distribution system for a refrigeration container of a large container ship is used for supplying power to the refrigeration container on the large container ship, and comprises 5 links of power supply, power transformation, power transmission, power distribution and power consumption as shown in figures 1-5. Wherein, the power supply link adopts a high-voltage distribution board 1 of a shipboard power station to distribute power, and a special refrigerated container transformer screen 2 is arranged on the high-voltage distribution board 1; in the power transformation link, a high-voltage cable 8 is adopted to transmit high-voltage power to the transformer 3 for transformation, and the high-voltage power is converted into low-voltage power; in the power transmission link, the low-voltage electricity converted by the transformer 3 is transmitted to a refrigerated container power sub-box 5 through a busbar 4; in the power distribution link, the refrigerated container power distribution box 5 distributes electric energy, then the electric energy is transmitted to the refrigerated socket box 6 near the refrigerated container 13 through the cable 7, and a circuit breaker is arranged in the refrigerated container power distribution box 5 for each refrigerated socket branch; the electricity consumption link is that the refrigerated container 13 is connected with the refrigerated socket box 6 through a plug to obtain electric energy.

In this embodiment, the high voltage power supply is taken from an on-board power station AC6.6KV high voltage distribution board, and a radiation type power supply mode is adopted to divide the whole ship into a first container area 9, a second container area 10, a third container area 11 and a fourth container area 12, wherein the first container area 9, the second container area 10, the third container area 11 and the fourth container area 12 are respectively close to the left side of the bow, the right side of the bow, the left side of the stern and the right side of the stern of the container ship, as shown in fig. 3; four refrigerated container transformer screens 2 are placed in the 15 high-voltage distribution boards in the rear island cabin, and the four refrigerated container transformer screens respectively supply power to four container areas, so that the safety performance of the system is improved.

For the four container areas, the four transformers 3 with specification of AC6.6KV changed into AC440V are adopted to respectively step down the high-voltage power output by the four refrigerated container transformer screens 2; the transformers 3 of the first container area 9 and the transformers 3 of the second container area 10 are placed in the transformer room of the upper and lower part 14 of the front island, and the transformers 3 of the third container area 11 and the fourth container area 12 are placed in the transformer room of the rear island cabin 15, as shown in fig. 2. Because the electric energy between the refrigerated container transformer screen 2 and the transformer 3 is transmitted in a high-voltage electric mode, the requirement of using a small amount of high-voltage cables can be met.

During power transmission, the power transformation link and the power distribution link are connected by adopting the busbar 4, the whole ship adopts the four-way busbar to supply power to the refrigerated container 13 of the whole ship, the busbar 4 is laid in the service channels on two sides of the ship body, the busbar 4 is specifically laid at the top of the service channels, normal passing in the service channels is ensured, and the four rows of busbars 4 respectively supply power to four container areas.

During the distribution, a plurality of frozen products insulated container electric power branch case 5 distribute female electric energy of arranging the transmission, then carry each frozen products insulated socket case 6 through cable 7, and frozen products insulated socket case 6 is close to frozen products insulated container 13 and sets up, and frozen products insulated container is convenient for be connected with frozen products insulated socket case 6 through standard plug when guaranteeing follow-up power consumption.

When setting up this container ship fridge power subsystem:

the method comprises the following steps of firstly, determining the type of a power supply refrigerated container transformer screen, namely the capacity of a circuit breaker in the refrigerated container transformer screen, and determining the type according to the maximum power and the maximum current required by all refrigerated containers in each area when the refrigerated containers are fully loaded. And determining the type of a high-voltage cable connected between the refrigerated container transformer screen and the transformer, wherein the type of the high-voltage cable depends on the maximum current output by the refrigerated container transformer screen and the distance from the refrigerated container transformer screen to the transformer.

And secondly, determining the types of the transformers in the respective areas of the first container area, the second container area, the third container area and the fourth container area, and determining the total input power of the refrigerated container transformer screen at the front end of each transformer and the maximum power required by the refrigerated container at the rear end of the transformer.

And thirdly, determining the type of the busbar and determining the type according to the maximum current output by the transformer and the distance of the electric power sub-boxes of the refrigerated container.

And fourthly, determining the number of the refrigerated container power sub-boxes and the capacity of the circuit breaker of each refrigerated outlet box branch.

And fifthly, determining the number and the type of the refrigerating socket boxes, and ensuring that each refrigerating container in the whole ship can be connected to the refrigerating socket boxes through a plug to obtain electric energy.

The present invention is further explained and not limited by the embodiments, and those skilled in the art can make various modifications as necessary after reading the present specification, but all the embodiments are protected by the patent law within the scope of the claims.

Claims

1. A large-scale container ship fridge power distribution system, is used for the container ship fridge power supply, wherein the system includes high-voltage power, voltage transformer, electrical power branch box of the fridge container, refrigerated socket case, high-tension cable, mother row, cable; the high-voltage power supply transmits high voltage to the transformers through high-voltage cables; the transformer transforms high voltage provided by a high voltage power supply and then transmits the transformed high voltage to the electric branch box of the refrigerated container through the main discharge; the refrigerated container power sub-box supplies power to the refrigerated socket box through a cable.

2. The large container ship reefer power distribution system of claim 1, wherein said high voltage power supply comprises a high voltage distribution board, a reefer container transformer panel, said high voltage distribution board distributing power to said transformer through said reefer container transformer panel.

3. The power distribution system for the large container ship fridge according to claim 1, wherein the busbar is installed in the service passage at both sides of the ship body, the refrigerated container power distribution boxes are installed in the service passage at both sides of the ship body, and a plurality of refrigerated container power distribution boxes are connected to the same busbar; the refrigerated receptacle box is disposed adjacent to the refrigerated container.

4. The power distribution system for the freezers of large container ship in accordance with claim 1, wherein said container ship comprises a first container area, a second container area, a third container area and a fourth container area, said first container area, said second container area, said third container area and said fourth container area are respectively near the left side of the bow, said right side of the bow, said left side of the stern and said right side of the stern of said container ship.

5. The power distribution system for a large scale container ship refrigerator according to claim 4, wherein said refrigerated container transformer panels comprise four, four refrigerated container transformer panels for distributing power to transformers in said first container region, said second container region, said third container region and said fourth container region, respectively.

6. The power distribution system for freezers of large container ships according to claim 5, wherein said high voltage power source is radiatively powered.

7. The power distribution system for a large container ship refrigerator as defined in claim 1, wherein said refrigerated container and said refrigerated receptacle box are connected by a plug.

8. A large container ship, characterized in that it comprises a large container ship refrigeration container power distribution system according to any one of claims 1-7.