Method for multi-point external power supply on ship

Abstract

The application provides a method for connecting a ship to an external power source at multiple positions. The method comprises multiple shore power boxes, which are distributed at different positions on the ship to form the positions for connecting to the external power source. Meanwhile, multiple junction boxes are provided on the ship. The first-stage junction box is electrically connected between two adjacent shore power boxes. The second-stage junction box is electrically connected between two adjacent first-stage junction boxes or between one of the first-stage junction boxes and one adjacent shore power box. The third-stage and multiple-stage junction boxes are electrically connected between adjacent junction boxes. The first-stage junction box is located at the symmetrical center of the main cable path or near one shore power box close to the final collection point. The other-stage junction boxes are arranged according to the principle of the vicinity of the collection object. According to the above strategy, the bidirectional supply of power between the ship and the shore or between two ships can be realized after the ships are relatively parked at multiple positions, and the repeated laying of cables is avoided.

Description

Technical fields:

[0001] This invention relates to the field of external power supply technology for ships, and in particular to a method for supplying external power to ships at multiple points. Background technology:

[0002] Shore power boxes, commonly found on ships, are used to provide the main power source for a ship when it is docked at a pier, replacing the ship's generators. Alternatively, when a ship is anchored in a designated area, other vessels or offshore structures can provide the main power source to the ship through the shore power box.

[0003] As described above, each ship typically has one shore power box, i.e., one location, and occasionally at most two. Practice has shown that this setup basically meets the needs of vessels navigating or operating at sea.

[0004] When external power is used as the main power source for special-purpose vessels, such as launching engineering vessels or floating docks for motorized operations, these vessels frequently travel between different wharves and berths. Due to the varying conditions of specific wharf facilities and berths, receiving shore power can be inconvenient or even challenging. For example, the shore power supply points on the wharf may be separated from the only shore power receiving points on board by a distance spanning the width or length of the vessel, or even diagonally. This can create a feeling of being "standing on opposite sides of a cliff" or "looking across the ocean with longing."

[0005] Similar situations also occur between ships.

[0006] There is an urgent need for a multi-point external power supply mechanism to facilitate the use of external power sources when a ship is moored in multiple locations. Summary of the Invention:

[0007] In one embodiment, the present invention provides a method for loading external power onto a ship at multiple points, which enables convenient use of external power after the ship is moored in multiple locations through multi-point and multi-level connection and control.

[0008] The method for supplying external power to the ship at multiple points includes:

[0009] Multiple shore power boxes are distributed in different locations on the ship to form connection points with external power sources;

[0010] A multi-stage junction box, wherein the first-stage junction box is electrically connected to the shore power box, and the second-stage junction box is electrically connected to the first-stage junction box, and the multi-stage junction boxes sequentially form a multi-stage connection circuit;

[0011] The first-level junction box is located near the shore power box, while the junction boxes of other levels are located near the main cable path.

[0012] In one embodiment, the multi-point external power supply loading method includes:

[0013] Multiple shore power boxes are distributed at different locations on the ship to form connection points with external power sources;

[0014] A multi-stage junction box, wherein the first-stage junction box is electrically connected to the shore power box, and the second-stage junction box is electrically connected to the first-stage junction box, and the multi-stage junction boxes sequentially form a multi-stage connection circuit;

[0015] The first-level junction box is located near the shore power box, while the junction boxes of other levels are located near the main cable path;

[0016] The shore power box has the main power supply for the dock.

[0017] In one embodiment, the last-stage junction box is electrically connected to the main distribution board.

[0018] In one embodiment, the junction box is connected to the shore power box via a transfer switch.

[0019] In one embodiment, the multi-point external power supply loading mechanism further includes:

[0020] The dock is equipped with a partition structure to separate adjacent slipways and form berths.

[0021] The spacing structure between adjacent berths has a first dock power supply point.

[0022] In one embodiment, the pier has a power supply station on one side that extends to the middle of the adjacent berth;

[0023] The power supply station is located in the middle of the berth, and a second dock power supply point is set up near the berth.

[0024] In one embodiment, the dock includes:

[0025] The main dock walls on both sides are provided with multiple shore power cables along their length.

[0026] The main cables on both sides are arranged along the length of the main dock wall and electrically connected at one end through the transverse passage of the bottom hull.

[0027] In one embodiment, the main dock wall is built on the dock bottom pontoon.

[0028] In one embodiment, the shore power cable is mounted on a cable tower.

[0029] In one embodiment, the dock further includes:

[0030] A main tower is located on one side of the bow of the hull;

[0031] Three auxiliary towers are respectively located on one side of the bow section of the hull and on both sides of the stern section of the hull;

[0032] Both the main tower and the auxiliary tower are equipped with shore power cables.

[0033] In one embodiment, the main distribution board is located on the main tower. Attached image description:

[0034] Figure 1 This is a schematic diagram of a multi-point shore power interface configuration in one embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of a multi-point shore power interface configuration in another embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of the first shore power box topology in another embodiment of the present invention;

[0037] Figure 4 This is a schematic diagram of a second shore power box topology in another embodiment of the present invention;

[0038] Figure 5 This is a schematic diagram showing the connection relationship between the ship's onshore electrical box and the junction box in another embodiment of the present invention;

[0039] Figure 6 This is a schematic diagram of a ship docking terminal structure in another embodiment of the present invention. Detailed implementation method:

[0040] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] Various embodiments and features of this application are described herein with reference to the accompanying drawings.

[0042] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0043] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0044] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0045] Specific embodiments of this application are described below with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to ascertain the true intent based on the user's historical operations, and to avoid unnecessary or redundant details that would obscure this application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in various ways with substantially any suitable detailed structure.

[0046] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.

[0047] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] Various embodiments and features of this application are described herein with reference to the accompanying drawings.

[0049] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0050] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0051] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0052] Specific embodiments of this application are described below with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to ascertain the true intent based on the user's historical operations, and to avoid unnecessary or redundant details that would obscure this application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in various ways with substantially any suitable detailed structure.

[0053] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.

[0054] To adapt to and promote the growing demand for new shipbuilding capacity in the current shipbuilding market, break through the cycle limitations of existing slipways and dry docks, facilitate shipbuilding on flat land, and solve the inconvenience of receiving shore power for the aforementioned types of work vessels.

[0055] The following is an introduction to the ship's unidirectional external power supply, but the present invention is also applicable to the ship providing power as an external power source for use by other nearby ships or objects, that is, the shore power boxes at multiple points on the ship have both power input and output functions.

[0056] Figure 1 This is a schematic diagram of a multi-point shore power interface configuration in one embodiment of the present invention; Figure 2 This is a schematic diagram of a multi-point shore power interface configuration in another embodiment of the present invention; Figure 3 This is a schematic diagram of the first shore power box topology in another embodiment of the present invention; Figure 4 This is a schematic diagram of a second shore power box topology in another embodiment of the present invention; Figure 5 This is a schematic diagram showing the connection relationship between the ship's onshore electrical box and the junction box in another embodiment of the present invention; Figure 6 This is a schematic diagram of a ship berthing dock structure according to another embodiment of the present invention. Figures 1 to 6 As shown, in one embodiment,

[0057] In one embodiment, the present invention provides a method for loading external power from multiple points onto a ship, the method comprising:

[0058] Multiple shore power boxes 1 are distributed at different locations on the ship to form connection points with external power sources;

[0059] Multi-stage junction box 2, the first stage junction box 2 is electrically connected to the shore power box 1, the second stage junction box 2 is electrically connected to the first stage junction box 2, and the multi-stage junction box 2 sequentially forms a multi-stage connection circuit.

[0060] The first-level junction box 2 is located near the shore power box 1, while the junction boxes 2 of other levels are located near the main cable path 3.

[0061] In one embodiment, the present invention provides a method for loading external power from multiple points onto a ship, the method comprising:

[0062] Multiple shore power boxes 1 are distributed at multiple locations on the ship to form shore power docking points;

[0063] Multi-level junction box 2, the first-level junction box 2 is electrically connected to the shore power box 1, the second-level junction box 2 is electrically connected to the first-level junction box 2, and the multi-level junction box 2 sequentially forms a multi-level connection circuit.

[0064] The first-level junction box 2 is located near the shore power box 1, while the other levels of junction boxes 2 are located near the main cable path 3.

[0065] Shore power box 1 has the main power supply 4 of the dock.

[0066] In one embodiment, the last-stage junction box 2 is electrically connected to the main distribution board 5.

[0067] In one embodiment, the junction box 2 is connected to the shore power box 1 via a transfer switch.

[0068] In one embodiment, the multi-point external power supply loading mechanism further includes:

[0069] Dock 6, on which a partition structure 61 is provided to separate adjacent slipways 62 to form berthing spaces 63;

[0070] The partition structure 61 between adjacent berths 63 has a first dock power supply point 64.

[0071] In one embodiment, one side of the pier has a power supply station 65 extending to the middle of the adjacent berth 63;

[0072] The power supply station 65 is located in the middle of the berth, near the berth 63, and a second dock power supply point 66 is set up.

[0073] In one embodiment, the dock 6 includes:

[0074] The main dock walls 67 on both sides are provided with multiple shore power cables 68 along their length.

[0075] The two main cables 69 are arranged along the length of the main dock wall 67 and electrically connected at one end through the transverse passage 610 in the lower deck.

[0076] On the left and right sides of the stern of the ship, the main cable 69 is installed upwards through vertical channels to the top.

[0077] In one embodiment, the main dock wall 67 is built on the dock bottom pontoon 611.

[0078] In one embodiment, the shore power cable 68 is mounted on the cable tower 612.

[0079] In one embodiment, the dock 6 further includes:

[0080] A main tower 613 is located on one side of the bow of the hull;

[0081] Three auxiliary towers 614 are respectively located on one side of the bow section of the hull and on both sides of the stern section of the hull;

[0082] Both the main tower 613 and the auxiliary tower 614 are equipped with shore power cables.

[0083] In one embodiment, the main distribution board 5 is installed on the main tower 613.

[0084] Based on the main dimensions of the vessel and its overall layout, and in conjunction with the facilities of the dock and mooring area, three or more multi-point shore power boxes are installed on the vessel to receive shore power.

[0085] The ship is also equipped with a number of power junction boxes to connect the shore power from the above-mentioned multiple locations through the main cable, and finally realize one or two shore power lines into the ship's main switchboard (or high-voltage switchboard).

[0086] Each of the aforementioned shore power boxes is equipped with a protected circuit breaker, and the shore power boxes are interlocked. At any given time, only one or both shore power boxes at one location can provide one or two main power sources to the ship.

[0087] Before the shore power box is energized, the transfer switches in each of the above junction boxes shall be switched according to the principle of connecting to the main distribution board as close as possible, so that unnecessary lines and boxes are not energized.

[0088] The ship's main switchboard and / or high-voltage switchboard are equipped with power-on / off commands, power-on indication feedback, and emergency disconnection facilities for shore power boxes at various points on the ship.

[0089] Based on the characteristics of the target working vessel, taking a launching work vessel as an example, when its hull shape resembles a typical floating dock with continuous dock walls on both sides, such as... Figure 1 As shown, the main switchboard compartment of the main dock wall (usually a side dock wall that frequently berths at the wharf) serves as the final collection point for multi-point shore power; when the ship type is "four-corner towers + bottom pontoons" or a similar form, such as Figure 2 As shown, the main distribution panel of the main tower (usually a tower that frequently docks at a pier and has facilities for people to board and disembark) is the final collection point for multi-point shore power.

[0090] For a typical floating dock launching work vessel, more than three shore power boxes can be installed at the bow and stern ends and in the middle of the dock walls, or at appropriate intervals on the sides of the hull, to match the dock berth facilities.

[0091] For a four-cornered tower-type launching work vessel, a shore power box can be installed on the top of each tower.

[0092] The shore power boxes at each of the above locations can be one or two, each connected to one or two main power sources from the dock or the shore.

[0093] Each location is also equipped with a shore power cable winch. Figure 1 and Figure 2(Omitted) and cable towers, to facilitate the loading and unloading of shore cables from the shore, while also reducing the horizontal stress on the suspended shore cables at the ship's end.

[0094] The power supply system (voltage and frequency) of the main power supply mentioned above is not limited; it can be AC ​​or DC, high voltage or low voltage, or high voltage and low voltage.

[0095] The shore power boxes mentioned above must meet the relevant specifications of the classification society regarding built-in protection.

[0096] From the shore power boxes at each of the aforementioned locations to the final shore power collection point: starting from the farthest shore power box, the fixed marine cable connected to it follows the ship's main cable route to the nearest location. At this location, a shore power junction box connects the incoming shore power cable and the power supply cable from the nearest shore power box, achieving a 2-in, 1-out junction function. This outgoing cable then continues along the main cable route, connecting with the power supply cable from the next shore power box in the same manner as described above, until finally forming one or two shore power sources to the final shore power collection point—the main distribution panel room.

[0097] As described above, each location is electrically interlocked with the shore power source to ensure that at any given time, only one location is connected to shore power.

[0098] The ship's main switchboard and / or high-voltage switchboard are equipped with power-on / off commands, power-on indication feedback, and emergency disconnection facilities for shore power boxes at various points on the ship.

[0099] As described above, the shore power box has power indication, phase sequence indication, automatic phase sequence reversal function, and phase loss protection function. The shore power box is equipped with a voltmeter, an ammeter, and a usage meter.

[0100] As described above, the shore power junction box uses copper busbars that match the rated current carrying capacity of the shore power to connect with the conductors of the incoming and outgoing cables. The junction box panel has a power-on indicator light.

[0101] When high-voltage shore power is used on board, the shore power boxes and junction boxes, as mentioned above, must be located in a dedicated compartment or equipped with protective railings to prevent access by general personnel. Meanwhile, the high-voltage connection cables on board must be laid independently.

[0102] Based on the aforementioned multi-point shore power boxes and their power supply cables, together with a series of junction boxes along the main cable path, and the shore power cables at the final collection point, the entire shore power receiving system of the target working vessel is formed through the main distribution board with the switch inlet.

[0103] Through the shore power supply and reception system described above, see Figure 3 This refers to the so-called multi-point shore power onboard mechanism (e.g.) Figure 4This greatly facilitates the target working vessel's adaptation to the power supply facilities conditions (limited) of different docks and berths, such as... Figure 5 As shown, this significantly improves the electrical operation capabilities of this type of vessel. The junction box, in particular, greatly reduces the amount of cable used, especially for low-voltage shore power supply to the vessel, where the effect is particularly noticeable.

[0104] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A method for supplying external power to a ship at multiple points, characterized in that, The method for supplying external power to ships at multiple points includes: Multiple shore power boxes (1) are distributed at different locations on the ship to form connection points with external power sources; Multi-level junction box (2), the first-level junction box (2) is electrically connected to the shore power box (1), the second-level junction box (2) is electrically connected to the first-level junction box (2), and the multi-level junction box (2) sequentially forms a multi-level connection circuit; The first-level junction box (2) is located near the shore power box (1), while the junction boxes (2) of other levels are located near the trunk cable path (3).

2. The method for loading multi-point external power sources onto a ship according to claim 1, characterized in that, The external power supply loading system with a multi-point external power supply loading mechanism includes: Multiple shore power boxes (1) are distributed at different locations on the ship to form connection points with external power sources; The multi-level junction box (2) is an electrical connection between two adjacent shore power boxes (1) in the first level, and an electrical connection between two adjacent first-level junction boxes or between a second-level junction box and an adjacent shore power box in the second level. The multi-level junction boxes form a multi-level similar connection circuit in sequence. The first-level junction box (2) is located at the center point of the main cable path or near one of the shore power boxes (1) at the final collection point. The junction boxes (2) of other levels are set up according to the above-mentioned principle of "center point" or "located" and "near" the junction object. The shore power box (1) has a dock main power supply (4).

3. The method for loading multi-point external power sources onto a ship according to claim 2, characterized in that, The final junction box (2) is electrically connected to the ship's main power distribution board (5), which is the same as the first-level junction box (2).

4. The method for loading multi-point external power sources onto a ship according to claim 3, characterized in that, The first-stage junction box (2) is connected to two shore power boxes (1) via a transfer switch.

5. The method for loading multi-point external power sources onto a ship according to claim 4, characterized in that, The mechanism also includes: The dock (6) is equipped with a partition structure (61) to separate adjacent slipways (62) to form berthing spaces (63); For adjacent vessels, similar multi-point shore power boxes are installed to supply or receive power. The partition structure (61) between adjacent berths (63) has a first dock power supply point (64).

6. The method for loading multi-point external power sources onto a ship according to claim 5, characterized in that, The pier has a power supply station (65) extending to the middle of the adjacent berth (63) on one side; The power supply station (65) is located in the middle of the berth, near the berth (63), and a second dock power supply point (66) is set up.

7. The method for loading multi-point external power sources onto a ship according to claim 6, characterized in that, The wharf (6) includes: The main dock walls (67) on both sides are provided with multiple shore power cables (68) along their length. The main cables (69) on both sides are arranged along the length of the main dock wall (67) and electrically connected at one end through the transverse passage (610) of the bottom compartment.

8. The method for loading multi-point external power sources onto a ship according to claim 7, characterized in that, The main dock wall (67) is built on the dock bottom pontoon (611).

9. The method for loading multi-point external power sources onto a ship according to claim 8, characterized in that, The shore power cable (68) is installed on the cable tower (612).

10. The method for loading multi-point external power sources onto a ship according to claim 9, characterized in that, The wharf (6) also includes: A main tower (613) is located on one side of the bow of the hull; Three auxiliary towers (614) are respectively located on one side of the bow section of the hull and on both sides of the stern section of the hull; Both the main tower (613) and the auxiliary tower (614) are equipped with shore power cables.

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