Method for oblique rotary roll-on of offshore wind turbine jacket

Abstract

The application discloses a method for oblique rotary roll-on of offshore wind power jacket, comprising the following steps: selecting the self-propelled module vehicle specification according to the weight, specification and transportation tool form of the jacket, aligning the center of the module vehicle with the center of the main leg of the jacket and placing the power head of the module vehicle towards the inside; the swing angle of the wheel shaft of the module vehicle is not greater than 15 degrees, the roll-on radius R and the roll-on route of the jacket are designed according to the distance L of the module vehicle and the angle alpha; R=L / (2*Sin alpha); marking lines on the wharf and the transport ship according to the roll-on route; laying the roadbed plate and the bridge plate, connecting and fixing the jacket with the transportation tool, roll-on the jacket to the ship obliquely, after the first group of module vehicles are rolled on the ship, the module vehicles start to rotate and roll on, and the jacket components are rolled to the position along the roll-on path. The application solves the problems of high risk and high cost of the jacket roll-on operation, thereby improving the safety and economy of the jacket roll-on operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the offshore wind power jacket rolling loading technology field, in particular to a kind of offshore wind power jacket oblique rotation rolling loading on ship method. BACKGROUND

[0002] Offshore wind power jacket has the characteristics of super wide, super heavy and super high, which needs to be processed and manufactured on land and then shipped to offshore installation. Generally, self-propelled module vehicles are used for rolling loading on ship, and then the ship is transported to offshore wind farm for installation. Rolling loading operation is a common method for product transfer and transportation, which has the advantages of safety, stability, high efficiency and economy. The current rolling loading method is straight rolling with ship stern or straight rolling with ship side. Straight rolling with ship stern needs to occupy the channel and needs to overcome large cross-flow resistance, so the construction risk is large. Straight rolling with ship side requires a larger deck width of the transport ship, which has higher requirements for the transport ship and high construction cost.

[0003] In order to overcome the deficiencies of the prior art, the present application proposes a new rolling loading method to solve the deficiencies of straight rolling with ship stern and straight rolling with ship side, and to improve the safety and economy of jacket rolling. SUMMARY

[0004] In view of the deficiencies of straight rolling with ship stern and straight rolling with ship side in the prior art method, the purpose of the present application is to provide an offshore wind power jacket oblique rotation rolling loading on ship method to solve the problems of high risk and high cost of jacket rolling operation, thereby improving the safety and economy of jacket rolling operation.

[0005] The present application is realized by the following technical scheme:

[0006] An offshore wind power jacket oblique rotation rolling loading on ship method, comprising the following steps:

[0007] Step S1, the transport ship is side-berthed to the wharf, and the mooring scheme is determined according to the on-board cable winch and the wharf pile.

[0008] Step S2, the self-propelled module vehicle specification is selected according to the weight, specification and transportation tool form of the jacket, the module vehicle load rate is less than 85%, i.e. (jacket weight + transportation tool weight + module vehicle plate weight) / (module shaft number x shaft line load) < 85%, the module vehicle center is aligned with the jacket main leg center, and the module vehicle power head is placed inward;

[0009] Step S3, the module vehicle wheel shaft swing angle a is not greater than 15°, the rolling loading route and the rotation radius R of the jacket are designed according to the module vehicle distance L and the angle a; R = L / (2 x Sin a°);

[0010] Step S4, marking according to the roll-on route on the wharf and the transport ship; checking the alignment of the transport barge and the shipping area to ensure that the error is within ±10 mm, and re-tightening through the mooring cables at the bow and stern of the ship;

[0011] Step S5, laying the roadbed plate and the bridge plate, checking and confirming the laying of the bridge plate, and ensuring that the bridge plate is laid on the roll-on path, and the bridge plate is arranged more than 1 m wider than the roll-on path;

[0012] Step S6, connecting and fixing the jacket to the transport tool, lifting the jacket through the transport tool, and supporting the transport tool with anti-skid rubber or wooden blocks; the jacket is lifted to be more than 100 mm above the ground through the lifting function of the module car, and the difference between the support pressure readings of each main leg is less than 10%;

[0013] Step S7, roll-on the jacket diagonally, the transport barge operator adjusts the ship's floating state, when the left side of the barge deck is 0-100 mm higher than the wharf plane, start roll-on, the module car is arranged diagonally, and the included angle β between the transport ship and the ship side is 45-60°;

[0014] Step S8, after all the axes of the first group of module cars are on the ship, the module car starts to rotate and roll-on, and the jacket member is rolled on along the roll-on path; during the roll-on process, the transport ship adjusts the load by pressing the water to keep the height difference between the wharf and the transport ship deck within 100 mm;

[0015] Step S9, during the loading process, the module car should move smoothly and at a low speed, the maximum driving speed is ≯0.5 km / h, and the speed is kept uniform.

[0016] The present application has the following beneficial effects:

[0017] 1) A group of module cars is separately arranged under each main leg of the jacket, each group of module cars is provided with an independent power head, all the module cars are linked and synchronized, the whole transport process is simple and flexible, the roll-on process is stable, safe and efficient;

[0018] 2) The present application requires the transport ship to side to the wharf, and the transport ship is directly moored after being positioned, avoiding the adjustment of the transport ship, reducing the cost and improving the efficiency;

[0019] 3) The transport ship is side to the wharf, reducing the influence of the ship on the channel, reducing the influence of cross-flow resistance on the transport ship, and improving the safety of construction;

[0020] 4) The jacket is roll-on diagonally, which reduces the width requirement of the transport ship and reduces the cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a module car arrangement schematic diagram of the embodiment of the present application.

[0022] Figure 2 Figure 1 is a schematic diagram of the relationship between the module wheel shaft swing angle a and the rolling radius R according to an embodiment of the present application;

[0023] Figure 3 Figure 2 is a schematic diagram of a module roof lifting guide pipe frame according to an embodiment of the present application;

[0024] Figure 4 Figure 3 is a schematic diagram of a guide pipe frame inclined rolling on a ship according to an embodiment of the present application;

[0025] Figure 5 Figure 4 is a schematic diagram of a guide pipe frame inclined rolling on a ship according to an embodiment of the present application. DETAILED DESCRIPTION

[0026] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments. The schematic embodiments and descriptions of the present application are used to explain the present application, but are not intended to limit the present application.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, top, bottom, top, bottom, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0028] In the present application, unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, "connection" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0029] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features; in addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0030] The following will be described in detail with reference to the accompanying drawings and specific embodiments. Figures 1-5 The present application will be described in detail below with reference to the accompanying drawings and specific embodiments. The schematic embodiments and descriptions of the present application are used to explain the present application, but are not intended to limit the present application.

[0031] The application relates to a method for oblique rotary roll-on of a jacket of offshore wind power on a ship, which comprises the following steps.

[0032] In step S1, the transport ship is side-berthed against the wharf, and a mooring scheme is determined according to a shipboard mooring machine and a wharf mooring pile position;

[0033] In step S2, a self-propelled module vehicle specification is selected according to the weight, specification and transport tool form of the jacket, a module vehicle load rate is less than 85%, that is, (jacket weight + transport tool weight + module vehicle plate weight) / (module shaft number*shaft line load) is less than 85%, the module vehicle center is aligned with the jacket main leg center, and the module vehicle power head is placed towards the inner side; it is to be noted that a group of module vehicles is separately arranged under each jacket main leg, and each group of module vehicles is provided with an independent power head; it is to be noted that the module vehicle shaft center is aligned with the jacket main leg center, the power head is placed towards the inner side, and the overall length of the module vehicle and the jacket is minimized.

[0034] In step S3, the module vehicle wheel shaft swing angle alpha is not greater than 15 DEG, the roll-on radius R and the roll-on route of the jacket are designed according to the module vehicle distance L and the angle alpha; R=L / (2*sin alpha DEG);

[0035] In step S4, the roll-on route is marked on the wharf and the transport ship; the alignment of the transport barge and the shipping area is checked to ensure that the error is within + / - 10 mm, and the fixed cable rope at the bow and stern of the ship is re-tightened;

[0036] In step S5, the roadbed plate and the bridge plate are laid, the laying of the bridge plate is checked and confirmed to be correct, the roll-on path is ensured to be laid with the bridge plate, and the bridge plate is arranged to be more than 1 m wider than the roll-on path;

[0037] In step S6, the jacket is connected and fixed with the transport tool, the module vehicle penetrates the transport tool to lift the jacket, and the anti-skid rubber or wooden block supporting pad is used between the module vehicle and the transport tool; the lifting function of the module vehicle is used to lift the jacket to be separated from the ground by more than 100 mm at the bottom of the tool, and the difference between the module vehicle supporting pressure table readings of each main leg is less than 10%;

[0038] In step S7, the jacket is obliquely roll-on the ship, the ship floating state is adjusted by the transport barge operator, when the left side deck surface of the barge is higher than the wharf plane by 0-100 mm, the roll-on is started, the module vehicle is obliquely arranged, and the included angle beta between the transport ship and the ship side is 45 DEG-60 DEG;

[0039] Step S8, after the first group of module vehicles are all on the ship, the module vehicles start to rotate and roll the jacket members into place along the roll-on path; during the rolling process, the transport ship adjusts the ballast by pumping water to keep the height difference between the wharf and the deck of the transport ship within 100mm; it should be noted that during the rolling process, all module vehicles are set in linkage and synchronization to ensure that each module vehicle operates synchronously.

[0040] Step S9, during the loading process, the module vehicles should move forward at a low speed, and the maximum driving speed should be ≯0.5km / h to keep a uniform speed.

[0041] Compared with the prior art, the present application has the following beneficial effects:

[0042] 1) A group of module vehicles is arranged under each main leg of the jacket, and each group of module vehicles is configured with an independent power head, and all module vehicles are set in linkage and synchronization, so that the whole transportation process is simple and flexible, and the rolling process is stable, safe and efficient;

[0043] 2) The present application requires the transport ship to side to the wharf, and the transport ship is directly moored after being docked, so as to avoid the adjustment of the position of the transport ship, reduce the cost and improve the efficiency;

[0044] 3) The transport ship is side-docked, which reduces the influence of the ship on the channel and the influence of the cross-flow resistance on the transport ship, and improves the construction safety;

[0045] 4) The jacket is rolled on the ship in an inclined manner, which reduces the width requirement of the transport ship and reduces the cost.

[0046] The technical solutions provided by the embodiments of the present application are described in detail above, and specific examples are applied to the principles and implementation modes of the embodiments of the present application; the above description of the embodiments is only applicable to help understand the principles of the embodiments of the present application; meanwhile, for those skilled in the art, according to the embodiments of the present application, the specific implementation modes and application ranges will be changed, and the above description of the present application should not be understood as a limitation of the present application.

Claims

1. A method for loading a ship with a marine wind power jacket in a diagonal swing roll-on, characterized in that, Comprising the following steps: Step S1, the transport ship side approaches the wharf, and the mooring scheme is determined according to the on-board cable winch and the wharf cable collecting position; Step S2, the self-propelled module car specification is selected according to the weight, specification and transportation tool form of the jacket, the module car load rate is < 85%, that is, (jacket weight + transportation tool weight + module car plate weight) / (module shaft number x shaft line load) < 85%, the module car center is aligned with the jacket main leg center, and the module car power head is placed inward; Step S3, the module car wheel shaft swing angle α is not greater than 15°, the rolling radius R and the rolling route of the jacket are designed according to the module car distance L and the angle α; R = L / (2 x Sin α°); Step S4, the rolling route is marked on the wharf and the transport ship; the alignment of the transport barge and the shipping area is checked to ensure that the error is within ±10mm, and the fixed cable on the bow and stern of the ship is re-tightened; Step S5, the roadbed plate and the bridge plate are laid, the laying of the bridge plate is checked and confirmed to be correct, it is ensured that the bridge plate is laid on the rolling route, and the bridge plate is arranged more than 1m wider than the rolling route; Step S6, the jacket is connected and fixed with the transportation tool, the module car passes through the transportation tool to lift the jacket, and the anti-skid rubber or wooden block support pad is used between the module car and the transportation tool; the jacket is lifted by the lifting function of the module car to be more than 100mm above the bottom of the tool and separated from the ground, and the difference between the module car support pressure table readings of each main leg is < 10%; Step S7, the jacket is obliquely rolled and loaded on the ship, the ship floating state is adjusted by the transport barge operator, when the left side deck surface of the barge is 0-100mm higher than the wharf plane, the rolling and loading is started, and the module car is obliquely arranged, and the included angle β between the transport ship and the ship side is 45°-60°; Step S8, after all the shafts of the first group of module cars are on the ship, the module car starts to rotate and roll, and the jacket components are rolled into place along the rolling route; during the rolling process, the transport ship adjusts the load by pressing and draining water to keep the height difference between the wharf and the transport ship deck within 100mm; Step S9, during the loading process, the module car should move forward smoothly and at low speed, the maximum driving speed is ≯0.5km / h, and the uniform speed is maintained.

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