Real-time matching system between vertical shore power connection box and receiving ship position

Abstract

The present invention relates to a real-time matching system of an upright shore power connection box and a powered ship position, comprising a berthing pier, a cable drum is arranged on the upper part of the berthing pier, a cable is wound on the cable drum, the cable realizes ship power supply under different water levels by retracting and releasing the cable, and the output terminal of the cable is connected to the connection box; a guide frame is arranged on the side of the berthing pier; a travel switch is arranged on the upper part of the guide frame; a water level gauge is arranged on the right side of the top of the berthing pier; a lifting winch is arranged on the top of the berthing pier, a connection box is arranged above the connection box platform, and the connection box can move up and down with the connection box platform; a radar rangefinder is arranged below the connection box platform. The present invention can move the shore power connection box to any height within the water level change zone, adapt to the power supply requirements of different ships under large water level differences, automatically adjust the connection box position according to real-time water level information, facilitate the crew's power connection operation, and avoid the risk of the connection box being immersed in water.

Description

Technical Field

[0001] The present invention relates to the field of shore power facilities, and more specifically, to a system for real-time matching the positions of an upright shore power connection box and a powered ship. Background Art

[0002] At present, the technology related to shore power facilities is developing rapidly, but most of them are designed for seaports. Due to the large water level changes and relatively small ship tonnage in inland rivers, the development of shore power technology is relatively slow. At present, for water environments with large water differences, some projects have adopted upright shore power connection boxes, which can power ships with different freeboard heights at different water levels by moving the connection boxes up and down. However, the up and down movement of the existing connection boxes requires manual control on site by management personnel, which is cumbersome and inefficient, and cannot flexibly respond to sudden changes in water levels. The problems it brings are: first, when the water level rises suddenly, if the connection box is not adjusted in time, there is a risk of immersion in water, which seriously threatens the safety of personnel and equipment; second, when the water level drops suddenly, if the connection box is not adjusted in time, there is a risk of the cable being pulled off, and it is extremely inconvenient for the crew to operate; third, personnel are required to be on duty during power supply, which requires high safety awareness of personnel, and the working environment is extremely unfriendly and inconvenient at night or in bad weather. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a system and control method for real-time matching of an upright shore power connection box with the position of a powered ship, which is convenient for crew members to operate, reduces the workload of management personnel, and enables the connection box to match the position of the powered ship in real time when supplying power to the ship.

[0004] The technical solution adopted by the present invention to solve the technical problem is: constructing a vertical shore power connection box and a real-time matching system for the position of a powered ship, comprising a berthing pier, a cable drum is arranged on the upper part of the berthing pier, a cable is wound on the cable drum, the cable realizes the power supply of the ship at different water levels by retracting and releasing the cable, the output terminal of the cable is connected to the connection box, and the connection box is used for direct power supply to the ship; a guide frame is arranged on the side of the berthing pier, and the guide frame is used for guiding the connection box platform when it moves up and down; a travel switch is arranged above the guide frame, and the travel switch is used to limit the upward position of the connection box platform and reset the connection box platform; a water level gauge is arranged on the right side of the top of the berthing pier, and the water level gauge is used to measure the real-time water level of the area in real time; a lifting winch is arranged on the top of the berthing pier, and the lifting winch is used to lift and lower the connection box platform, and a connection box is arranged above the connection box platform, and the connection box can move up and down with the connection box platform; a radar rangefinder is arranged below the connection box platform, and the radar rangefinder is used to measure the distance from the water surface in real time.

[0005] According to the above scheme, the height of the guide frame is greater than the water level difference to meet the working conditions under a large water level difference.

[0006] According to the above scheme, the guide frame is arranged upright; the top elevation of the guide frame is 6m higher than the highest water level, and the bottom elevation is 1m lower than the lowest water level.

[0007] According to the above scheme, the cable reel is a variable frequency cable reel that can accurately measure the length of the output cable. The cable reel is installed on the top side of the moored pier, and the reel center elevation of the cable reel is 1 to 2 meters higher than the top elevation of the guide frame.

[0008] According to the above scheme, the water level meter is arranged on the top of the mooring pier and away from the mooring side, and the accurate measurement range of the water level meter is 1 to 50m.

[0009] According to the above scheme, the travel switch adopts a mechanical touch type, and the travel switch is used to limit the upward movement of the power connection box platform and also to initialize or reset the position of the power connection box platform.

[0010] According to the above scheme, the power connection box platform is used to carry the power connection box and provide power connection operations and passage for the crew.

[0011] According to the above scheme, the accurate measurement range of the radar rangefinder is 0.1 to 50 m.

[0012] The vertical shore power connection box and the real-time matching system of the power receiving ship position of the present invention have the following features:

[0013] Beneficial effects:

[0014] 1. The present invention can move the shore power connection box to any height within the water level change area to meet the power supply requirements of different ships under large water level differences, and can automatically adjust the position of the connection box according to real-time water level information to facilitate the crew's power connection operation, while avoiding the risk of the connection box being immersed in water;

[0015] 2. The present invention can solve various risks of the power connection box when the water level changes suddenly, facilitate the operation of the crew, reduce the workload of the management personnel, and make the power connection box an adaptive system that matches the position of the powered ship in real time when supplying power to the ship. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0017] Figure 1 It is a structural schematic diagram of a real-time matching system between a vertical shore power connection box and a powered ship position according to the present invention;

[0018] Figure 2It is a schematic diagram of the planar structure of the real-time matching system between the vertical shore power connection box and the power receiving ship position of the present invention;

[0019] Figure 3 It is a flow chart of a control method of a system for real-time matching of a vertical shore power connection box with a powered ship in the present invention;

[0020] In the figure: 1. mooring pier, 2. cable drum, 3. power connection box, 4. lifting winch, 5. power connection box platform, 6. guide frame, 7. water level gauge, 8. travel switch, 9. radar rangefinder, 10. controller, 11. power receiving ship. DETAILED DESCRIPTION

[0021] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0022] like Figure 1-3 As shown, the real-time matching system of the upright shore power connection box and the position of the powered ship of the present invention comprises a berthing pier 1, a cable drum 2 is arranged on the upper part of the berthing pier 1, a cable is wound on the cable drum 2, the cable realizes the power supply of the ship under different water levels by retracting and releasing the cable, the output terminal of the cable is connected to the connection box 3, and the box is used for direct power supply to the ship; a guide frame 6 is arranged on the side of the berthing pier 1, and the guide frame 6 is used for guiding the connection box platform 5 when it moves up and down; a travel switch 8 is arranged above the guide frame 6, and the travel switch 8 is used for limiting the upward position of the connection box platform 5 and resetting the connection box platform 5; a water level gauge 7 is arranged on the right side of the top of the berthing pier 1, and the water level gauge 7 is used for real-time measurement of the real-time water level of the area; a lifting winch 4 is arranged on the top of the berthing pier 1, and the lifting winch 4 is used for lifting and lowering the connection box platform 5, and a connection box 3 is arranged above the connection box platform 5, and the connection box 3 can move up and down with the connection box platform 5; a radar rangefinder 9 is arranged below the connection box platform 5, and the radar rangefinder 9 is used for real-time measurement of its distance from the water surface.

[0023] The height of the guide frame 6 is greater than the water level difference to meet the working conditions under large water level difference. The guide frame 6 is arranged upright, the top elevation of the guide frame 6 is 6m higher than the highest water level, and the bottom elevation is 1m lower than the lowest water level, which can meet the working range requirements of the power connection box platform 5 under large water level difference. The cable drum 2 is a variable frequency cable drum 2 that can accurately measure the length of the output cable. The cable drum 2 is installed on the top side of the mooring pier 1, and the drum center elevation of the cable drum 2 is 1 to 2m higher than the top elevation of the guide frame 6. The water level meter 7 is set on the top of the mooring pier 1 and away from the mooring side to avoid the disturbance of the ship to the water surface as much as possible and improve the accuracy of the measurement. The accurate measurement range of the water level meter 7 is 1 to 50m, which is greater than the water level fluctuation range. The travel switch 8 adopts a mechanical touch type. The travel switch 8 is used to limit the upward movement of the power connection box platform 5 and also for the position initialization of the power connection box platform 5, that is, reset. The power connection box platform 5 is arranged on the side of the pier 1 and can move up and down along the guide frame 6. It is used to carry the power connection box 3 and provide the crew with power connection and passage. The power connection box platform 5 is used to carry the power connection box 3 and provide the crew with power connection and passage. The accurate measurement range of the radar rangefinder 9 is 0.1 to 50m. The power connection box 3 can move up and down with the power connection box platform 5 to facilitate power supply to ships at different water levels. The lifting winch 4 is used to lift and lower the power connection box platform 5.

[0024] The controller 10 is arranged in the rear management room, and can systematically receive the signals from the water level meter 7, the travel switch 8, and the radar rangefinder 9 and perform calculations, and issue instructions to control the operation of the cable drum 2 and the lifting winch 4 according to the processing results.

[0025] The present invention also provides a control method for a system for real-time matching the position of an upright shore power connection box with a powered ship, comprising the following steps:

[0026] In the initial state, the power box platform 5 is set on the top of the guide frame 6 and contacts the travel switch 8. The lifting winch 4 and the cable drum 2 are both in the initial state of zero, that is, the height of the power box platform 5 is The running distance of the hoisting winch 4 and the cable drum 2 is S=0.

[0027] When the powered ship 11 is docked, the crew applies for electricity through the mobile app and reports the ship information. After the controller 10 receives the signal and gets confirmation from the management, the shore power system starts working.

[0028] The controller 10 measures the water level according to the water level data measured by the water level meter 7. The distance S that the power receiving box platform 5 needs to go down is calculated by calculating the ship freeboard height h reported by the power receiving ship 11.

[0029]

[0030] Where:

[0031]

[0032] Note: ε3 is the safety distance threshold (the initial value is 0.3m, which can be determined based on actual tests).

[0033] The controller 10 sends signals to the lifting winch 4 and the cable drum 2 synchronously according to the calculation results. On the one hand, it controls the cable drum 2 to release the cable, and on the other hand, it controls the lifting winch 4 to release the wire rope. The speed Vtd of the two is consistent and the stroke Std is the same until the power box platform 5 drops to the distance S calculated above.

[0034] During descent, in order to avoid false reporting or large deviation of the ship's freeboard height data, which may cause the power box platform 5 to descend too far and be immersed in water, the radar rangefinder 9 at the bottom of the power box platform 5 will measure the distance L in real time and feed it back to the controller 10. The controller 10 calculates the height of the power box platform 5 in real time based on its feedback information. On the other hand, the elevation of the connection box platform 5 is calculated according to the downlink distance Std. By comparing the difference between the two, it is ensured that the downward distance is accurate, and on the other hand, it is ensured that the connection box platform 5 will not be immersed in water.

[0035] The specific algorithm to ensure the accuracy of the downlink distance Std is as follows:

[0036]

[0037] When dH>ε1, the actual speed of Vtd is larger than the design speed, and the downward speed is too large, so the Vtd value should be reduced;

[0038] When dH<-ε1, the actual speed of Vtd is smaller than the design speed, and the downlink is less, so the Vtd value should be increased;

[0039] When dH∈(-ε1, ε1), the downlink distance error is small, the actual speed is basically consistent with the design speed, and the Vtd value is not adjusted.

[0040] The specific algorithm for ensuring that the junction box platform 5 is not immersed in water is as follows:

[0041] When L>ε2, the power box platform 5 has a sufficient safe distance from the water surface and continues to operate;

[0042] When L≤ε2, the power box platform 5 is too close to the water surface, and the power box platform 5 stops descending.

[0043] In the formula, ε1 and ε2 are both thresholds. The initial threshold is 0.5, which can be determined based on actual tests later.

[0044] When the power connection platform reaches a suitable height, the crew of the powered ship 11 drags the power connection cable onto the power connection box platform 5, connects with the power connection box 3 to obtain power for the ship, and then leaves the power connection box platform 5 after the power connection operation. At this time, the radar rangefinder 9 measures the distance from the water surface L=L0.

[0045] In use, when the water level When the water level rises, the ship will rise with the rise of the water level. The radar rangefinder 9 under the power box platform 5 measures that the distance L from the water surface becomes smaller, and its value is measured to be L1. When the change amplitude dL=L0-L1 exceeds the threshold value ε3, the controller 10 will synchronously send signals to the lifting winch 4 and the cable drum 2. On the one hand, it controls the cable drum 2 to recycle the cable, and on the other hand, it controls the lifting winch 4 to control the wire rope to be retracted. The two have the same speed and stroke, so that the power box platform 5 rises to the required height Su.

[0046] Su=dL

[0047] Similarly, when the water level drops, the controller 10 will control the cable drum 2 and the lifting winch 4 to work, so that the height of the power connection box platform 5 is always adapted to the height of the power receiving ship 11.

[0048] When the receiving ship 11 stops using electricity, the crew disconnects the power cable from the power box 3 and drags the cable away from the power box platform 5. After the rear administrator confirms safety, the controller 10 controls the cable drum 2 and the lifting winch 4 to work, and lifts the power box platform 5 to the top of the guide frame 6. When the power box platform 5 touches the travel switch 8, it stops running, and the lifting winch 4 and the cable drum 2 are initialized, that is, the elevation of the power box platform 5 is reset to The running distance of the hoisting winch 4 and the cable drum 2 is reset to S=0.

[0049] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A system for real-time matching of the position of an upright shore power connection box and a powered ship, comprising a berthing pier, characterized in that: A cable drum is provided on the upper part of the mooring pier, on which a cable is wound, and the cable realizes power supply to the ship under different water levels by retracting and releasing the cable, and the output terminal of the cable is connected to a power connection box, and the power connection box is used for directly powering the ship; a guide frame is provided on the side of the mooring pier, and the guide frame is used for guiding the power connection box platform when it moves up and down; a travel switch is provided above the guide frame, and the travel switch is used for limiting the upward position of the power connection box platform and resetting the power connection box platform; a water level gauge is provided on the right side of the top of the mooring pier, and the water level gauge is used for real-time measurement of the real-time water level of the area; a lifting winch is provided on the top of the mooring pier, and the lifting winch is used for lifting and lowering the power connection box platform, and a power connection box is provided above the power connection box platform, and the power connection box can move up and down with the power connection box platform; a radar rangefinder is provided below the power connection box platform, and the radar rangefinder is used for real-time measurement of its distance from the water surface; The height of the guide frame is greater than the water level difference to meet the working conditions under a large water level difference; The travel switch is of mechanical touch type, and is used to limit the upward movement of the power connection box platform and also to initialize or reset the position of the power connection box platform; The power connection box platform is used to carry the power connection box and provide a means for crew members to perform power connection operations and pass through.

2. The real-time matching system between the vertical shore power connection box and the receiving ship position according to claim 1 is characterized in that: The guide frame is arranged upright; the top elevation of the guide frame is 6m higher than the highest water level, and the bottom elevation is 1m lower than the lowest water level.

3. The real-time matching system between the vertical shore power connection box and the powered ship position according to claim 1 is characterized in that: The cable reel is a variable frequency cable reel that can accurately measure the length of the output cable. The cable reel is installed on one side of the top of the moored pier, and the reel center elevation of the cable reel is 1-2m higher than the top elevation of the guide frame.

4. The real-time matching system between the vertical shore power connection box and the receiving ship position according to claim 1 is characterized in that: The water level meter is arranged on the top of the mooring pier and away from the mooring side, and the accurate measurement range of the water level meter is 1-50m.

5. The real-time matching system between the vertical shore power connection box and the powered ship position according to claim 1 is characterized in that: The accurate measurement range of the radar rangefinder is 0.1~50m.

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