A shore power system and control method for moored ships

Abstract

The invention discloses a shore power system for mooring ships based on mooring and a control method. The system comprises a mooring device, a shore power supply device and a control device. The mooring device comprises at least two moorings and at least one pontoon, and the pontoon is connected between two adjacent moorings. The shore power supply device comprises a shore power interface box, a distribution box and a shore power connection box. The distribution box is installed on the top of a mooring connected to the pontoon, and the shore power interface box is installed on the pontoon. Two guide grooves are arranged on one side of each mooring connected to the pontoon, and two guide rails are arranged on both sides of each pontoon connected to the mooring. Each pontoon is slidably connected to the guide grooves of two adjacent moorings through the guide rails. A floating water level gauge is arranged between the two guide grooves of each mooring, and the floating water level gauge comprises a floating part. A waterproof camera is arranged between the two guide rails of each pontoon, and the waterproof camera is installed at the water surface boundary position of the pontoon in the water.

Description

Technical Field

[0001] The present invention relates to the technical field of ship shore power utilization, and in particular to a ship mooring shore power system and a control method based on mooring. Background Art

[0002] In terms of port shore power application, according to statistics from the Yichang Port and Shipping Construction and Maintenance Center, the coverage rate of port shore power facilities in legally operating terminals in the Three Gorges Dam area has reached 80%. For old terminals built before 2004, the construction of port shore power infrastructure was not considered in the early stage of construction. Most of the existing shore power facilities were installed by terminal owners later. The facilities are relatively simple, have safety hazards, and are not convenient to use. There is an urgent need to standardize the power supply capacity, power load, and access and use.

[0003] The existing shore power application mainly meets the power demand of ships during berthing, and the shore power access rate is closely related to the berthing time. For ships berthing for 12-24 hours and overnight, the shore power access demand rate is about 80%; for ships berthing for more than 48 hours, the shore power access demand rate is about 90%.

[0004] The water flow in the Three Gorges Dam area is complex and the environment is quite different. There are many types of ships waiting for the lock. Whether it is in the port or in the anchorage, there are technical difficulties to varying degrees in the promotion and application, especially the construction of shore power facilities in the anchorage, which is more difficult. It is mainly reflected in:

[0005] (1) Although the coverage rate of port shore power facilities is as high as 80%, the application level of existing equipment is far from meeting the needs of ships berthing and connecting to shore power. Most of the shore power facilities at ports and terminals are installed by the owners later, and only the power supply function is realized. The power is low, the equipment application standards are not unified, the use is not convenient, and the ship utilization efficiency is extremely low.

[0006] (2) At present, only Shawan has shore power facilities in the Three Gorges Dam anchorage area, and the conditions for the application of such shore power facilities are limited. The shore power facilities are basically idle, and other anchorages have not built supporting shore power equipment and facilities. The construction of shore power facilities in the dam anchorage area is basically in a blank stage.

[0007] (3) There are anchorages in the river above, between and below the Three Gorges Dam. At present, ships are anchored in the river anchorages by dropping anchor or mooring together. There is no infrastructure to rely on for cable access, so pontoon facilities must be configured. In addition, the technology of large-capacity and long-distance pontoon power supply is difficult, and shore power access is difficult.

[0008] (4) Some docks and anchorages in the Three Gorges Dam area are mostly sloped. The berthing of ships changes with the water level. It is particularly urgent to solve the problems of cable lifting and ship-shore connection based on the use of existing shore power piles and to form a replicable and popularizable application technology.

[0009] (5) The area of ​​the mooring anchorage is small, and most ships are moored by mooring. In addition, the real-time maintenance of this area is difficult, and it is difficult to solve the problem of unmanned shore power application.

[0010] (6) At present, due to the lack of a unified low-voltage shore power interface standard and ship-to-shore connection communication protocol, connector manufacturers adopt a variety of standards. When equipping shore power, most ports simply pull the electricity to the shore power box on the shore to solve the problem, without building ship-to-shore power supply and receiving plugs in accordance with unified standards. Many sockets and plugs do not match, resulting in extremely low universality of shore power access when different ships are moored at different ports and terminals, affecting the use of shore power.

[0011] (7) There are no pontoon facilities for shore power supply in the Three Gorges Dam area. It is urgent to design and build a power supply pontoon that meets the requirements and equip it with corresponding equipment and facilities.

[0012] (8) There are still a large number of old ships sailing on the Yangtze River, which lack power supply equipment and facilities. There are also differences in the distribution of shore power supply facilities on newly built ships, and their universality is not high.

[0013] After searching, it was found that the Chinese patent with publication number CN108321791A disclosed a shore power access system and method for inland high-pile berthing ships on July 24, 2018. The system includes a shore-based power supply device, a ship-shore interaction device and a ship power receiving device. The shore-based power supply device is arranged on the shore, the ship-shore interaction device is arranged on the high pile at the shore, the ship power receiving device is arranged on the ship, and the shore-based power supply device is connected to the ship-shore interaction device through a cable. When the ship is successfully connected to the power, the ship-shore interaction device and the ship power receiving device are also connected through a cable; the ship-shore interaction device includes a rotating guide rail platform, which can rotate on the high pile at the shore. The rotating guide rail platform is provided with a guide rail, and the cable passes through the guide rail. The cable is also connected to a cable retracting device. The invention works when the high-pile water environment meets the requirements for shore power access. By controlling the rotation of the rotating guide rail platform, the cable is sent to the power receiving ship, and the ship is supplied with shore power after the crew on board connects the cable to the ship power receiving device.

[0014] In this patent, the programmable logic controller (PLC) controls the cable retracting device and the guide rail rotating platform through serial port (Modbus protocol) communication, but the PLC can only obtain the water level information of the high-pile water area from the monitoring center, divide the water level information into rough ranges such as lower and higher, and judge the length of the released cable based on the rough water level information, and cannot realize real-time water area maintenance of the shore power interface box equipment. Summary of the invention

[0015] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a shore power system for ships moored based on mooring, which solves the problem that when the ship is moored, the position of the ship changes with the water level, and the position of the shore power interface box installed on the monitoring pontoon and the pontoon automatically changes with the water level, thereby avoiding the problem that the shore power interface box is damaged due to being lower than the water level.

[0016] The present invention is achieved through the following technical solutions:

[0017] On one hand, the present invention provides a shore power system for mooring ships, comprising a mooring device, a shore power supply device and a control device, wherein the mooring device comprises at least two moorings and at least one pontoon, wherein the pontoon is connected between two adjacent moorings; the shore power supply device comprises a shore power interface box, a distribution box and a shore power connection box, wherein the distribution box is installed on the top of a mooring connected to the pontoon, and the shore power interface box is installed on the pontoon; two guide grooves are arranged on one side of each mooring connected to the pontoon, two guide rails are arranged on both sides of each pontoon connected to the mooring, and each pontoon is slidably connected to the guide grooves of two adjacent moorings through the guide rails; a floating water level gauge is arranged between the two guide grooves of each mooring, and the floating water level gauge comprises a floating part; a waterproof camera is arranged between the two guide rails of each pontoon, and the waterproof camera is installed at the water surface boundary position of the pontoon in the water, and is used to shoot an image of the floating part and upload the image to the control device.

[0018] In the above technical solution, each of the moorings is connected to a cable equipped with a powered ship for mooring the moored ship; each of the pontoons is provided with a shore power interface box, and the shore power interface box is connected to a ship-to-shore connection cable equipped with the powered ship for supplying shore power to the ship; each of the moorings connected to the pontoons is provided with two guide rails, and each of the pontoons is slidingly connected to two adjacent moorings through four guide rails, and each of the pontoons rises and falls between two adjacent moorings as the water level changes, and the positions of the pontoons and the shore power interface boxes arranged on the pontoons automatically change with the water level, thereby avoiding damage caused by the shore power interface box being below the water level, and a waterproof camera is installed at the water surface boundary line position of the pontoon in the water to capture images of floating parts floating in the water, analyze the offset position of the floating parts in the image, monitor the offset between the water surface boundary line and the water level line of the pontoon in the water, and thus monitor whether the shore power interface box is below the water level.

[0019] Furthermore, the control device includes a single chip microcomputer, an image processing unit and an alarm unit, the single chip microcomputer is connected to the image processing unit and the alarm unit respectively, and the image processing unit is connected to the waterproof camera.

[0020] Specifically, the waterproof camera sends the captured picture of the floating part to the image processing unit, and the image processing unit compares the captured image with the standard image, thereby calculating the distance by which the floating part deviates from the center of the standard image, and judging whether the water surface boundary line of the pontoon in the water deviates from the horizontal plane according to the distance by which the floating part deviates from the center of the standard image; if the distance by which the floating part deviates from the center of the standard image is greater than the maximum deviation distance, it is determined that the water surface boundary line of the pontoon in the water deviates from the horizontal plane, and the single-chip computer generates an alarm signal and sends the alarm signal to the alarm unit.

[0021] Furthermore, the distribution box is connected to the shore connection box by a cable. After being connected from the shore connection box, the cable passes through a cable duct to the nearshore waters near the mooring, and then is transmitted through the bottom of the mooring to the distribution box at the top of the mooring.

[0022] Specifically, according to the number and type of moored ships, and considering operation and maintenance, a 400V riverbed cable is used to connect the distribution box and the shore power connection box. On the one hand, a cable channel is set up between the nearshore waters near the mooring and the location where the shore power connection box is placed on the shore, which is conducive to conveniently and quickly passing the cable through the cable duct to the nearshore waters near the mooring; on the other hand, passing the cable into the cable duct and protecting it in the cable duct is conducive to preventing the ship from anchoring and affecting the cable.

[0023] Furthermore, a cable reel is fixedly placed on the pontoon, a cable is wound in the cable reel, the retractable end of the cable in the cable reel is connected to a distribution box, and the output end of the cable in the cable reel is connected to a shore power interface box.

[0024] Specifically, the redundant cables are wound in a cable reel, and the shore power interface box and the distribution box are connected through the cable reel, so that the cables can be organized and stored, so as to prevent the redundant cables between the shore power interface box and the distribution box from being scattered in the river water at will, and to prevent the cables from being affected by the anchoring of the ship.

[0025] Furthermore, the cable reel has a constant tension control function, and the retractable end of the cable in the cable reel can retract and release the cable according to changes in water level.

[0026] Specifically, when the position of the shore power interface box installed on the pontoon and the pontoon changes automatically with the water level, the retracted and released end of the cable in the cable reel retracts and releases the cable according to the water level change, so that the length of the retracted and released end of the cable in the cable reel is synchronized with the position of the shore power interface box installed on the pontoon and the pontoon. There is no need for staff to monitor the water level in real time, nor is there any need for staff to adjust the length of the retracted and released end of the cable in the cable reel according to the real-time changing water level, thereby avoiding lengthy cables being scattered outside.

[0027] Furthermore, the shore power interface box is provided with a plurality of connection sockets, and each of the connection sockets is respectively connected to a plug of a ship-to-shore connection cable provided on the power receiving ship.

[0028] Specifically, multiple connection sockets can be adapted to cable plugs of different models or to cable plugs of the same model, unifying the low-voltage shore power interface standard and the ship-shore connection communication protocol. Ship-shore power supply and receiving plugs are constructed in accordance with unified standards, and the sockets are matched with the plugs, so that shore power access is universal when different ships are moored at different ports and terminals.

[0029] Furthermore, each of the connection sockets can be connected to ship-to-shore connection cables configured for at most three power receiving ships.

[0030] Specifically, each of the connection sockets is connected in sequence to any number of three or less power receiving ships, wherein the plugs configured for the ship-shore connection cables configured for the power receiving ships connected to the same connection socket are plugs of the same model, and multiple connection sockets can be adapted to cable plugs of different models, or to cable plugs of the same model.

[0031] Furthermore, the mooring device includes five moorings and two pontoons, and the two pontoons are equipped with two sets of shore power supply devices.

[0032] Specifically, each mooring device can berth two rows of ships in a way that 5 ships can be berthed side by side, and a mooring device including five moorings can berth 10 ships; each mooring device includes two pontoons, and each pontoon is connected between two adjacent moorings; each mooring device is equipped with two shore power supply devices, and the shore power interface box in each shore power supply device is set on the pontoon, the distribution box is set on the top of the mooring, and the shore power connection box is set on the shore foundation; the receiving ship is connected to the distribution box and the shore power connection box in turn through the shore power interface box. The construction of ship-shore power supply and receiving plug-ins in accordance with unified standards has been realized, solving the technical problem of extremely low universality of shore power access when different ships are moored at different ports and terminals.

[0033] Furthermore, the five moorings are arranged transversely in a row, and each of the pontoons is arranged transversely between two adjacent moorings.

[0034] Specifically, the five moorings are arranged in a row along the shoreline, and the mooring device is moored along the shore using fixed moorings, which has the advantages of fixed mooring shoreline and clear mooring point; each of the pontoons is provided with a shore power interface box, and each of the pontoons is arranged horizontally between two adjacent moorings, so that the five moorings are divided into two power supply areas, and ships are docked in each power supply area in a manner of berthing 5 ships side by side, which is conducive to the reasonable distribution of power supply functions of the two sets of shore power supply devices.

[0035] Another aspect of the present invention provides a shore power control method for a moored ship, based on a moored ship moored shore power system, comprising:

[0036] (1) The floating member floats up and down as the water level changes, and the position of the floating member corresponds to the horizontal plane;

[0037] (2) controlling the waterproof camera to capture images of the floating member at a preset time period and uploading the images to an image processing unit;

[0038] (3) the image processing unit analyzes the distance of the floating component from the center of the image in the image, thereby determining whether the water boundary line of the pontoon in the water deviates from the horizontal plane;

[0039] (4) If the distance of the floating part offset from the center of the image is greater than the maximum offset distance, it is determined that the water surface boundary line of the pontoon in the water deviates from the horizontal plane, and the single chip microcomputer generates an alarm signal and sends the alarm signal to the alarm unit.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] (1) In the present invention, each of the moorings is connected to a cable equipped with a powered ship and is used to dock the moored ship; each of the pontoons is provided with a shore power interface box, which is connected to a ship-to-shore connection cable equipped with the powered ship and is used to supply shore power to the ship; each of the moorings connected to the pontoons is provided with two guide rails, and each of the pontoons is slidably connected to two adjacent moorings through four guide rails. Each of the pontoons rises and falls between two adjacent moorings as the water level changes. The position of the pontoons and the shore power interface box arranged on the pontoons automatically changes with the water level, thereby avoiding damage caused by the shore power interface box being below the water level. A waterproof camera is installed at the water boundary line of the pontoon in the water to capture images of floating parts floating in the water, analyze the offset position of the floating parts in the image, monitor the offset between the water boundary line of the pontoon in the water and the water level line, and thus monitor whether the shore power interface box is below the water level;

[0042] (2) When the position of the shore power interface box installed on the pontoon and the pontoon in the present invention changes automatically with the water level, the retracted end of the cable in the cable reel retracts and releases the cable according to the change in the water level, so that the length of the retracted end of the cable in the cable reel is synchronized with the position of the shore power interface box installed on the pontoon and the pontoon, and the staff does not need to monitor the water level in real time, nor does the staff need to adjust the length of the retracted end of the cable in the cable reel according to the real-time changing water level, thereby avoiding the long cables being scattered outside;

[0043] (3) In the present invention, each mooring device can berth two rows of ships in a manner of berthing five ships side by side, and a mooring device including five moorings can berth 10 ships; each mooring device includes two pontoons, and each pontoon is connected between two adjacent moorings; each mooring device is equipped with two shore power supply devices, and the shore power interface box in each shore power supply device is arranged on the pontoon, the distribution box is arranged on the top of the mooring, and the shore power connection box is arranged on the shore foundation; the receiving ship is connected to the distribution box and the shore power connection box in turn through the shore power interface box, realizing the construction of ship-shore power supply and receiving plug-ins in accordance with unified standards, solving the technical problem of extremely low universality of shore power access when different ships are moored at different ports and docks;

[0044] (4) The shore power interface box of the present invention is equipped with multiple connection sockets, each of which is connected to the plug of the ship-to-shore connection cable configured for the power receiving ship; wherein the multiple connection sockets can be adapted to cable plugs of different models, or to cable plugs of the same model, unifying the low-voltage shore power interface standard and the ship-to-shore connection communication protocol, and constructing the ship-to-shore power supply and receiving plugs in accordance with the unified standard, matching the sockets with the plugs, so that the shore power access is universal when different ships are moored at different ports and terminals. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A connection diagram of a shore power system for a moored ship according to an embodiment of the present invention;

[0046] Figure 2 A horizontal diagram of a shore power system for a moored ship according to an embodiment of the present invention;

[0047] Figure 3 A schematic diagram of a shore power system for a moored ship according to an embodiment of the present invention;

[0048] Figure 4 A moored side view of a shore power system for a moored ship according to an embodiment of the present invention;

[0049] Figure 5 A side view of a pontoon of a shore power system for a moored ship according to an embodiment of the present invention;

[0050] In the figure: 1. mooring; 2. cable reel; 3. pontoon; 4. shore power interface box; 5. cable; 6. distribution box; 7. shore power connection box; 8. cable pipeline; 9. shore base; 10. chute; 11. floating water level gauge; 111. floating part; 12. slide rail; 13. waterproof camera. DETAILED DESCRIPTION

[0051] The following will clearly and completely describe the technical solutions of various embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0052] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0053] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0055] like Figure 1-Figure 5As shown, on one hand, the present invention provides a shore power system for ship mooring based on mooring, comprising a mooring device, a shore power supply device and a control device, wherein the mooring device comprises at least two moorings and at least one pontoon, and the pontoon is connected between two adjacent moorings; the shore power supply device comprises a shore power interface box, a distribution box and a shore power connection box, wherein the distribution box is installed on the top of a mooring connected to the pontoon, and the shore power interface box is installed on the pontoon; two guide grooves are arranged on one side of each mooring connected to the pontoon, and two guide rails are arranged on both sides of each pontoon connected to the mooring, and each pontoon is slidably connected to the guide grooves of two adjacent moorings through the guide rails; a floating water level gauge is arranged between the two guide grooves of each mooring, and the floating water level gauge comprises a floating part; a waterproof camera is arranged between the two guide rails of each pontoon, and the waterproof camera is installed at the water surface boundary position of the pontoon in the water, and is used to take an image of the floating part and upload the image to the control device.

[0056] A pontoon is arranged between two moorings, guide rails are installed on both sides of the moorings, and the pontoon is installed in a space surrounded by four guide rails and two moorings, so that the pontoon can automatically rise and fall with the water level. This is conducive to the position of the pontoon and the shore power interface box installed on the pontoon to automatically change with the water level. There is no need for staff to monitor the water level in real time, nor to adjust the upper and lower positions of the pontoon according to the real-time changing water level. Unmanned operation can be achieved, saving labor costs.

[0057] The control device includes a single chip microcomputer, an image processing unit and an alarm unit, wherein the single chip microcomputer is connected to the image processing unit and the alarm unit respectively, and the image processing unit is connected to a waterproof camera. The waterproof camera sends the captured image of the floating part to the image processing unit, and the captured image is compared with the standard image by the image processing unit, so as to calculate the distance of the floating part deviating from the center of the standard image, and judge whether the water surface boundary line of the pontoon in the water deviates from the horizontal plane according to the distance of deviation from the center of the standard image; if the distance of the floating part deviating from the center of the standard image is greater than the maximum deviation distance, it is determined that the water surface boundary line of the pontoon in the water deviates from the horizontal plane, and the single chip microcomputer generates an alarm signal and sends the alarm signal to the alarm unit.

[0058] The distribution box is connected to the shore power connection box by a cable. After being connected from the shore power connection box, the cable passes through the cable duct to the nearshore waters near the mooring, and then passes through the bottom of the mooring to the distribution box on the top of the mooring. According to the number and type of moored ships, and comprehensive consideration of operation and maintenance, a 400V river bottom cable is used to connect the distribution box and the shore power connection box. On the one hand, a cable channel is set between the nearshore waters near the mooring and the location where the shore power connection box is placed on the shore, which is conducive to conveniently and quickly passing the cable through the cable duct to the nearshore waters near the mooring; on the other hand, passing the cable into the cable duct and protecting it in the cable duct is conducive to preventing the ship from anchoring and affecting the cable.

[0059] A cable reel is fixedly placed on the pontoon, and a cable is wound in the cable reel. The retractable end of the cable in the cable reel is connected to the distribution box, and the output end of the cable in the cable reel is connected to the shore power interface box. The redundant cable is wound in the cable reel, and the shore power interface box and the distribution box are connected through the cable reel, so that the cable can be organized and stored, so as to prevent the redundant cable between the shore power interface box and the distribution box from being randomly scattered in the river water, and also to prevent the ship from anchoring and affecting the cable.

[0060] The cable reel has a constant tension control function, and the retractable end of the cable in the cable reel can retract and release the cable according to the change of water level. When the position of the shore power interface box installed on the pontoon and the pontoon changes automatically with the water level, the retractable end of the cable in the cable reel retracts and releases the cable according to the change of water level, so as to synchronize the length of the retractable end of the cable in the cable reel with the position of the shore power interface box installed on the pontoon and the pontoon, without the need for staff to monitor the water level in real time, and without the need for staff to adjust the length of the retractable end of the cable in the cable reel according to the real-time changing water level, thereby avoiding the long cables being scattered outside.

[0061] The shore power interface box is equipped with multiple connection sockets, each of which is connected to the plug of the ship-to-shore connection cable configured by the power receiving ship. The multiple connection sockets can be adapted to cable plugs of different models or the same model, unifying the low-voltage shore power interface standard and the ship-to-shore connection communication protocol, and building the ship-to-shore power supply and receiving plugs in accordance with the unified standard, matching the sockets with the plugs, so that the shore power access is universal when different ships are moored at different ports and docks.

[0062] Each of the connection sockets can be connected to ship-to-shore connection cables configured for at most three power receiving ships. Each of the connection sockets is sequentially connected to any number of three or less power receiving ships, wherein the plugs configured for the ship-to-shore connection cables configured for the power receiving ships connected to the same connection socket are plugs of the same model, and multiple connection sockets can be adapted to cable plugs of different models or to cable plugs of the same model.

[0063] The mooring device includes five moorings and two pontoons, and the two pontoons are equipped with two sets of shore power supply devices. Each group of mooring devices can berth two rows of ships in a manner of berthing five ships side by side, and a group of mooring devices including five moorings can berth 10 ships; each group of mooring devices includes two pontoons, and each pontoon is connected between two adjacent moorings; each group of mooring devices is equipped with two sets of shore power supply devices, and the shore power interface box in each set of shore power supply device is set on the pontoon, the distribution box is set at the top of the mooring, and the shore power connection box is set on the shore foundation; the receiving ship is connected to the distribution box and the shore power connection box in turn through the shore power interface box. It realizes the construction of ship-shore power supply and receiving plug-ins in accordance with unified standards, and solves the technical problem of extremely low universality of shore power access when different ships are moored at different ports and terminals.

[0064] The five moorings are arranged transversely in a row, and each pontoon is arranged transversely between two adjacent moorings. The five moorings are arranged transversely in a row along the shoreline, and the mooring device uses fixed moorings to moor along the shore, which has the advantages of fixed mooring shoreline and clear mooring points; each pontoon is provided with a shore power interface box, and each pontoon is arranged transversely between two adjacent moorings, so that the five moorings are divided into two power supply areas, and ships are docked in each power supply area in a manner of berthing 5 ships side by side, which is conducive to the reasonable distribution of the power supply functions of the two shore power supply devices.

[0065] Each mooring is used to connect with the cable configured by the powered ship to dock the moored ship. When the ship docks at multiple moorings, it is necessary to tie the cables to multiple moorings respectively to achieve mooring without anchoring. Since the mooring cables are fixed, this method is safer than other mooring methods. The types of ships docked by mooring are mainly container ships and commercial vehicle roll-on / roll-off ships.

[0066] Working principle: Each mooring device can berth two rows of ships in a manner of berthing 5 ships side by side, and a mooring device consisting of five moorings can berth 10 ships; each mooring device includes two pontoons, and each pontoon is connected between two adjacent moorings.

[0067] Each mooring device is equipped with two shore power supply devices. The shore power interface box in each shore power supply device is installed on the pontoon, the distribution box is installed at the top of the mooring, and the shore power connection box is installed on the shore foundation; the receiving ship is connected to the distribution box and the shore power connection box in turn through the shore power interface box. According to the number and type of moored ships, the operation and maintenance are comprehensively considered, and 400V river bottom cable is used for power supply. After the cable is connected from the shore power connection box, it passes through the cable pipeline to the nearshore waters near the mooring, and then transmitted to the distribution box at the top of the mooring.

[0068] A pontoon is set up between two moorings, and guide rails are installed on both sides of the moorings. The pontoon is installed in the space surrounded by four guide rails and two moorings so that it can automatically rise and fall with the water level. The cable reel is placed on the pontoon, and the retractable and retractable end of the cable reel draws power from the 400V low-voltage connection box on the mooring. The output end of the cable reel is connected to the shore power interface box. The cable reel is set to constant tension control mode, which can realize the retraction and release of the cable according to the water level changes.

[0069] The powered ship connects the plug of its own ship-to-shore connection cable to the socket of the shore power interface box. One shore power interface box is set on the pontoon, and each shore power interface box is equipped with two connection sockets.

[0070] By setting up a pontoon, the position of the shore power interface box can be automatically changed with the water level, and the limit rails of the pontoon are installed on the mooring, so that unmanned operation can be achieved.

[0071] Another aspect of the present invention provides a shore power control method for a moored ship, based on a moored ship moored shore power system, comprising:

[0072] (1) The floating member floats up and down as the water level changes, and the position of the floating member corresponds to the horizontal plane;

[0073] (2) controlling the waterproof camera to capture images of the floating member at a preset time period and uploading the images to an image processing unit;

[0074] (3) the image processing unit analyzes the distance of the floating component from the center of the image in the image, thereby determining whether the water boundary line of the pontoon in the water deviates from the horizontal plane;

[0075] (4) If the distance of the floating part offset from the center of the image is greater than the maximum offset distance, it is determined that the water surface boundary line of the pontoon in the water deviates from the horizontal plane, and the single chip microcomputer generates an alarm signal and sends the alarm signal to the alarm unit.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present invention.

Claims

1. A shore power system based on moored ships, It is characterized in that It includes a mooring device, a shore power supply device and a control device. The mooring device includes at least two moorings and at least one pontoon. The pontoon is connected between two adjacent moorings. The shore power supply device includes a shore power interface box, a distribution box and a shore power connection box. The distribution box is installed on the top of a mooring connected to the pontoon, and the shore power interface box is installed on the pontoon. Two guide grooves are arranged on one side of each mooring connected to the pontoon, two guide rails are arranged on both sides of each pontoon connected to the mooring, and each pontoon is slidably connected to two adjacent mooring guide grooves through the guide rails; a floating water level gauge is arranged between the two guide grooves of each mooring, and the floating water level gauge includes a floating part; a waterproof camera is arranged between the two guide rails of each pontoon, and the waterproof camera is installed at the water surface dividing line position of the pontoon in the water, and is used to take images of the floating part and upload the images to the control device.

2. A shore power system for moored ships according to claim 1, It is characterized in that The control device comprises a single chip microcomputer, an image processing unit and an alarm unit. The single chip microcomputer is connected to the image processing unit and the alarm unit respectively, and the image processing unit is connected to the waterproof camera.

3. A shore power system for moored ships according to claim 1, It is characterized in that The distribution box is connected to the shore power connection box by a cable. After being connected from the shore power connection box, the cable passes through a cable duct to the nearshore waters near the mooring, and then is transmitted to the distribution box at the top of the mooring through the bottom of the mooring.

4. A shore power system for moored ships according to claim 1, It is characterized in that A cable reel is fixedly placed on the pontoon, a cable is wound in the cable reel, a retractable end of the cable in the cable reel is connected to a distribution box, and an output end of the cable in the cable reel is connected to a shore power interface box.

5. A shore power system for moored ships according to claim 4, It is characterized in that The cable reel has a constant tension control function, and the retractable end of the cable in the cable reel can retract and release the cable according to changes in water level.

6. A shore power system for moored ships according to claim 1, It is characterized in that The shore power interface box is provided with a plurality of connection sockets, each of which is respectively connected to a plug of a ship-to-shore connection cable provided on the power receiving ship.

7. A shore power system for moored ships according to claim 6, It is characterized in that Each of the connection sockets can be connected to ship-to-shore connection cables provided on at most three power receiving ships.

8. The shore power system for moored ships according to claim 1, It is characterized in that The mooring device includes five moorings and two pontoons, and the two pontoons are equipped with two sets of shore power supply devices.

9. A shore power system for moored ships according to claim 8, It is characterized in that The five moorings are arranged transversely in a row, and each pontoon is arranged transversely between two adjacent moorings.

10. A method for controlling shore power supply for a moored ship, based on the shore power supply system for a moored ship according to claim 2, It is characterized in that include: The floating member floats up and down as the water level changes, and the position of the floating member corresponds to the horizontal plane; Controlling the waterproof camera to capture images of the floating member according to a preset time period, and uploading the images to an image processing unit; The image processing unit analyzes the distance of the floating part offset from the center of the image in the image, thereby determining whether the water boundary line of the pontoon in the water deviates from the horizontal plane; If the distance that the floating part deviates from the center of the image is greater than the maximum offset distance, it is determined that the water surface boundary line of the pontoon in the water deviates from the horizontal plane, and the single chip generates an alarm signal and sends the alarm signal to the alarm unit.

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