A large container ship refrigerated box power distribution system and container ship

Abstract

The present invention relates to a large 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 busbar, and a low-voltage cable; the high-voltage power supply transmits high-voltage electricity to a number of transformers through a high-voltage cable; the transformer transforms the high-voltage electricity provided by the high-voltage power supply and transmits it to the refrigerated container power sub-box through a busbar; the refrigerated container power sub-box supplies power to the refrigerated socket box through a low-voltage cable, and the system is used to supply power to the refrigerated container of the container ship. The present invention uses a busbar to transmit power between the transformer and the refrigerated container power sub-box, reducing the use of a large number of low-voltage cables, thereby avoiding the problems of cable channel congestion and difficulty in laying caused by the use of a large number of low-voltage cables; and the busbar is a standard part, which can be pre-installed in the segmentation stage, and directly spliced ​​when the segments are closed, greatly improving the construction efficiency.

Description

Technical Field

[0001] The present invention relates to the field of ship electrical systems, and in particular to a large container ship refrigerated box power distribution system and a container ship. Background Art

[0002] At present, container ships are gradually becoming larger, from 9400TEU to 15000TEU, and then to the current 23000TEU. The number of containers loaded is increasing. Large container ships are loaded with refrigerated containers, accounting for about 10% of the total number of containers. In the current refrigerated power distribution system, the power transmission between equipment and equipment is mainly realized by cables. The current carrying capacity of cables of different specifications is different. For power cables with the same voltage level, the larger the cross-sectional area, the greater the current carrying capacity. Generally, the specifications of AC440V power cables are mostly 3×95mm², and the maximum does not exceed 3×150mm². A large number of power cables are used in the refrigerated power system. The power cables have a large diameter, and factors such as heat dissipation must also be considered. They occupy a large amount of space in the cable channel. A large number of cold box power supply cables are laid in the channels on both sides of the ship, causing congestion in the cable channel, causing many difficulties in cable laying, and the cables are easily damaged during the laying process. Summary of the invention

[0003] In order to solve this problem, the present invention provides a large container ship refrigerated box power distribution system and a container ship. With the help of the refrigerated box power distribution system, the space occupied by cable arrangement is reduced. The technical purpose of the present invention is achieved through the following technical solutions:

[0004] A large container ship refrigerated container power distribution system is used for supplying power to container ship refrigerated containers. The system includes a high-voltage power supply, a transformer, a refrigerated container power distribution box, a refrigerated socket box, a high-voltage cable, a busbar, and a low-voltage cable. The high-voltage power supply transmits high-voltage electricity to a number of transformers through high-voltage cables. The transformer transforms the high-voltage electricity provided by the high-voltage power supply and transmits it to the refrigerated container power distribution box through the busbar. The refrigerated container power distribution box supplies power to the refrigerated socket box through the low-voltage cable.

[0005] 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;

[0006] The high-voltage power supply includes a high-voltage distribution board and a refrigerated container transformer panel. The high-voltage distribution board distributes power to the transformer through the refrigerated container transformer panel. The refrigerated container transformer panel includes four refrigerated container transformer panels, which are used for transformer power distribution in the first container area, the second container area, the third container area, and the fourth container area respectively.

[0007] Four refrigerated container transformer panels are placed in the high-voltage switchboard room of the rear island cabin, the transformers in the first container area and the second container area are placed in the transformer room built on the front island, and the transformers in the third container area and the fourth container area are placed in the transformer room of the rear island cabin;

[0008] The busbar is installed in the service channels on both sides of the hull, and the busbar is laid on the top of the service channel. The refrigerated container power distribution box is installed in the service channels on both sides of the hull, and several refrigerated container power distribution boxes are connected to the same busbar; the refrigerated socket box is set close to the refrigerated container.

[0009] Furthermore, the high voltage power supply adopts a radial power supply.

[0010] Furthermore, the refrigerated container and the refrigerated socket box are connected via a plug.

[0011] The present invention also provides a large container ship, which comprises the large container ship refrigerated box power distribution system.

[0012] Compared with the prior art, the beneficial effect of the present invention is that the present invention uses the busbar to transmit power between the transformer and the refrigerated container power sub-box, reducing the use of a large number of low-voltage cables, thereby avoiding the congestion of cable channels and the difficulty of laying caused by the use of a large number of low-voltage cables; and the busbar is a standard part, which can be pre-installed in the segmentation stage and directly spliced ​​when the segments are closed, which greatly improves the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the power distribution system for the refrigerated box of a large container ship in the present invention.

[0014] Figure 2 It is a schematic diagram of the application of the large container ship refrigerated box power distribution system of the present invention in the container ship.

[0015] Figure 3 It is a schematic diagram of the area division of a large container ship in the present invention.

[0016] Figure 4 yes Figure 2 Magnified view of the bow.

[0017] Figure 5 yes Figure 2 A magnified view of the stern.

[0018] In the figure, 1. High-voltage distribution board; 2. Refrigerated container transformer panel; 3. Transformer; 4. Busbar; 5. Refrigerated container power distribution box; 6. Refrigerated socket box; 7. Low-voltage cable; 8. High-voltage cable; 9. First container area; 10. Second container area; 11. Third container area; 12. Fourth container area; 13. Refrigerated container; 14. Front island construction; 15. Rear island engine room. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below in conjunction with specific embodiments:

[0020] A large container ship refrigerated box power distribution system is used to power refrigerated containers on large container ships, such as Figure 1-5 As shown, the system includes five links: power supply, power transformation, power transmission, power distribution and power consumption. The power supply link uses the high-voltage distribution board 1 of the shipboard power station for power distribution, and a dedicated refrigerated container transformer panel 2 is set on the high-voltage distribution board 1; the power transformation link uses a high-voltage cable 8 to transmit the high-voltage electricity to the transformer 3 for transformation, and converts the high-voltage electricity into low-voltage electricity; the transmission link transmits the low-voltage electricity converted by the transformer 3 to the refrigerated container power distribution box 5 through the busbar 4; the distribution link is that the refrigerated container power distribution box 5 distributes the electric energy, and then transmits the electric energy to the refrigerated socket box 6 near the refrigerated container 13 through the low-voltage cable 7, and a circuit breaker is set for each refrigerated socket branch in the refrigerated container power distribution box 5; the power consumption link is that the refrigerated container 13 obtains electric energy by connecting the refrigerated socket box 6 through a plug.

[0021] In this embodiment, the high-voltage power supply is taken from the AC6.6KV high-voltage distribution board of the shipboard power station, and a radial 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. 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. Figure 3 As shown; four refrigerated container transformer panels 2 are placed in the high-voltage distribution board room of the rear island cabin 15. The four refrigerated container transformer panels supply power to four container areas respectively, thereby improving the safety performance of the system.

[0022] For these four container areas, four transformers 3 with specifications of AC6.6KV to AC440V are used to reduce the high voltage output by the four refrigerated container transformer panels 2; the transformer 3 of the first container area 9 and the transformer 3 of the second container area 10 are placed in the transformer room 14 of the front island, and the transformer 3 of the third container area 11 and the fourth container area 12 are placed in the transformer room 15 of the rear island cabin, as shown in FIG. Figure 2 As shown. Since the electric energy between the refrigerated container transformer panel 2 and the transformer 3 is transmitted in the form of high voltage electricity, a small amount of high voltage cables can be used.

[0023] During power transmission, busbar 4 is used to connect the transformation link with the distribution link. Four busbars are used to supply power to the refrigerated containers 13 of the entire ship. Busbar 4 is laid in the service channels on both sides of the hull. Specifically, busbar 4 is laid on the top of the service channel to ensure normal passage in the service channel. Four rows of busbars 4 supply power to four container areas respectively.

[0024] During power distribution, several refrigerated container power distribution boxes 5 distribute the electric energy transmitted by the busbar, and then transmit it to each refrigerated socket box 6 through a low-voltage cable 7. The refrigerated socket box 6 is arranged close to the refrigerated container 13 to ensure that the refrigerated container can be easily connected to the refrigerated socket box 6 through a standard plug when electricity is used later.

[0025] When setting up the container ship reefer power subsystem:

[0026] The first step is to determine the model of the power refrigerated container transformer panel, that is, the capacity of the circuit breaker in the refrigerated container transformer panel, which is determined by the maximum power and maximum current required when all refrigerated containers in each area are fully loaded. Determine the model of the high-voltage cable connecting the refrigerated container transformer panel and the transformer. The model of the high-voltage cable depends on the maximum current output by the refrigerated container transformer panel and the distance from the refrigerated container transformer panel to the transformer.

[0027] The second step is to determine the transformer model for each of the first container area, the second container area, the third container area, and the fourth container area, based on the total input power of the refrigerated container transformer panel at the front end of each transformer and the maximum power required by the refrigerated container at the rear end of the transformer.

[0028] The third step is to determine the busbar model based on the maximum current output by the transformer and the distance between the refrigerated container power distribution boxes.

[0029] The fourth step is to determine the number of refrigerated container power sub-boxes and the circuit breaker capacity of each refrigerated socket box branch.

[0030] The fifth step is to determine the number and model of refrigerated socket boxes to ensure that every refrigerated container on the ship can obtain electricity by connecting to the refrigerated socket box through a plug.

[0031] This embodiment is only a further explanation of the present invention, not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it will be protected by the patent law.

Claims

1. A large container ship refrigerated box power distribution system, used for powering refrigerated containers on container ships, characterized in that: The system includes a high-voltage power supply, a transformer, a refrigerated container power distribution box, a refrigerated socket box, a high-voltage cable, a busbar, and a low-voltage cable; the high-voltage power supply transmits high-voltage electricity to several transformers through high-voltage cables; 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 the low voltage cable; 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; The high-voltage power supply includes a high-voltage distribution board and a refrigerated container transformer panel, and the high-voltage distribution board distributes power to the transformer through the refrigerated container transformer panel; the refrigerated container transformer panel includes four, and the four refrigerated container transformer panels are respectively used for transformer power distribution in the first container area, the second container area, the third container area, and the fourth container area; Four refrigerated container transformer panels are placed in the high-voltage switchboard room of the rear island cabin, the transformers in the first container area and the second container area are placed in the transformer room built on the front island, and the transformers in the third container area and the fourth container area are placed in the transformer room of the rear island cabin; The busbar is installed in the service channels on both sides of the hull, and the busbar is laid on the top of the service channel. The refrigerated container power distribution box is installed in the service channels on both sides of the hull, and several refrigerated container power distribution boxes are connected to the same busbar; the refrigerated socket box is set close to the refrigerated container.

2. A large container ship refrigerated box power distribution system according to claim 1, characterized in that: The high voltage power supply adopts radiation power supply.

3. A large container ship refrigerated box power distribution system according to claim 1, characterized in that: The refrigerated container and the refrigerated socket box are connected via a plug.

4. A large container ship, characterized in that: The container ship comprises the large container ship refrigerated box power distribution system according to any one of claims 1 to 3.

Images