Special installation ship for offshore photovoltaic components

Abstract

The utility model discloses a mounting platform for offshore photovoltaic equipment, which is formed by refitting an unpowered self-elevating wind power construction platform and comprises a platform main body, a main crane, four pile legs, two pairs of pile grippers and a DP1-level positioning power system, a left board groove and a right board groove of the platform main body are filled with two middle side buoyancy tanks; a left notch and a right notch of the platform main body are filled by two tail side buoyancy tanks; the arc groove of the platform main body is filled in by the tail middle buoyancy tank; one pair of pile grippers are symmetrically and back-to-back mounted at the front parts of a left board and a right board of the main deck, the other pair of pile grippers are symmetrically and back-to-back mounted at the middle parts of the left board and the right board of the main deck, and the distance between the two pairs of pile grippers is matched with the north-south distance of four pile foundations of one photovoltaic machine; and each pile gripper is a telescopic pile gripper, is perpendicular to the length direction of the main deck and is in an external suspension type. According to the utility model, non-anchoring state operation can be completed in a construction area, pile foundation construction can be carried out, and the photovoltaic support and the photovoltaic panel at the upper part can be installed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a special installation ship of offshore photovoltaic component. BACKGROUND

[0002] With the increasing demand for renewable energy worldwide, offshore photovoltaics, as a new clean energy technology, are gradually receiving widespread attention. Offshore photovoltaic power generation projects can effectively utilize vast marine resources, reduce the occupation of land resources, and reduce the impact on the environment by constructing solar photovoltaic power generation systems in offshore, tidal flat, and other marine environments. Offshore photovoltaic components are divided into fixed and floating types, with the fixed type being constructed by manually driving concrete precast pile foundations into the seabed, installing photovoltaic supports on the pile foundations, and installing photovoltaic panels on the top surface of the photovoltaic supports.

[0003] The key and difficult points of current offshore photovoltaic component construction are:

[0004] 1. The position and elevation accuracy of the pile foundation are high, and the foundation of a photovoltaic site is usually composed of four steel pipe piles connected by a central line in a rectangular shape. The north-south spacing of the four pile foundations in a site is 20-30 m, and the east-west spacing is 40-50 m. To ensure the smooth installation of photovoltaic components, controlling the pile sinking accuracy is a challenge for the project. The conventional water piling method cannot meet the accuracy requirements, and reliable limiting measures must be taken to ensure accurate pile positioning.

[0005] 2. The photovoltaic panels in a photovoltaic field are usually arranged in a matrix array, and the spacing between the panels is small. Therefore, the pile foundations are also arranged in an array, and the number of pile foundations in a photovoltaic field is large, and the spacing between the pile foundations is small. It is difficult for a ship to anchor between the pile groups, and there is much cross interference.

[0006] 3. The conventional piling ship adopts a positioning and piling measure. Due to complex marine climate conditions and construction operation conditions, the relative position deviation between a group of arrayed pile foundations is large.

[0007] 4. Due to the large planar size and weight of the photovoltaic support, and the low structural strength of the photovoltaic panel, the construction ship requires good stability, strong operation capacity, and a large span for lifting and installation.

[0008] 5. After completing the pile sinking construction, the conventional ship cannot enter the field for installation of photovoltaic supports and photovoltaic panels due to the small interference between the pile foundations. UTILITY MODEL CONTENTS

[0009] The utility model aims to overcome the defects of the prior art and provide a special installation ship for offshore photovoltaic components. It can complete anchor-free mooring operations in the construction area, and the ship has integrated construction capabilities, enabling both pile foundation construction and installation of photovoltaic supports and photovoltaic panels on the upper part.

[0010] The utility model discloses a kind of technical solutions for achieving the purpose of the utility model: a special installation ship of offshore photovoltaic component, it is refitted from unpowered self-elevating wind power construction platform, including platform main body, main crane, auxiliary crane, two middle part side pontoons, two tail part side pontoons, one tail part middle pontoon, two pairs of pile grippers and DP1 level positioning power system;Wherein,

[0011] The platform main body is basically rectangular cuboid and includes platform bottom plate, main deck and multiple cabin rooms separated by longitudinal and transverse bulkheads arranged between platform bottom plate and main deck, a through-type deep platform pile leg hole is formed in the left bow part, right bow part, left side rear part and right side rear part of the platform main body respectively, and a pile fixing chamber is arranged on the main deck of the platform main body corresponding to each platform pile leg hole;One platform pile leg is installed in each of the four pile fixing chambers through a ring beam lifting mechanism;A through-type deep left side recess and right side recess are formed in the left side middle rear part and right side middle rear part of the platform main body respectively and symmetrically corresponding to each other;A through-type deep circular arc groove is formed in the middle part of the stern end of the platform main body, and a left floating platform and a right floating platform are extended backward along the left side and right side of the circular arc groove respectively and corresponding to each other, so that the left side surface of the left floating platform forms a left gap with the stern end surface of the platform main body, and the right side surface of the right floating platform forms a right gap with the stern end surface of the platform main body;

[0012] The main crane is installed on the platform pile leg located at the right side rear part;

[0013] The auxiliary crane is installed above the front of the pile fixing chamber located at the left side rear part;

[0014] The two middle part side pontoons are filled in the left side recess and right side recess of the platform main body respectively and corresponding to each other;The two tail part side pontoons are filled in the left gap and right gap of the platform main body respectively and corresponding to each other;The tail part middle pontoon is filled in the circular arc groove of the platform main body, so that the platform main body is changed into a complete rectangular cuboid hull;

[0015] One pair of pile grippers is symmetrically and back-to-back installed in the left side front part and right side front part of the main deck, and the other pair of pile grippers is symmetrically and back-to-back installed in the left side middle part and right side middle part of the main deck, and the distance between the two pairs of pile grippers is adapted to the north-south distance between the four pile foundations of a photovoltaic site;Each pile gripper is a telescopic pile gripper, and the length direction of each pile gripper is perpendicular to the main deck and in an overhanging manner;

[0016] The DP1 level positioning power system comprises a rudder propeller system assembly and a DP1 control system; the rudder propeller system assembly comprises two bow rudder propellers each installed on the front end of the platform body through a front base in one-to-one correspondence, two stern rudder propellers each installed on the tail of the ship body through a rear base in one-to-one correspondence, and the two bow rudder propellers and the two stern rudder propellers are connected with the diesel engine through a universal shaft, a clutch and an elastic coupling in sequence; the DP1 control system is arranged in the centralized control room of the ship and controls the work of the two bow rudder propellers and the two stern rudder propellers.

[0017] The special installation ship for offshore photovoltaic components has the following characteristics:

[0018] The special installation ship for offshore photovoltaic components has the following characteristics:

[0019] The special installation ship for offshore photovoltaic components has the following characteristics:

[0020] The special installation ship for offshore photovoltaic components has the following characteristics:

[0021] 1. The difficulties of dense pile foundation in the construction area and the inability to anchor and work are overcome, the pile driving and photovoltaic support hoisting integrated operation of the photovoltaic components can be realized, the pile foundation construction and photovoltaic support installation construction can be completed at one time, and the difficulty of the ship returning to the field to install the photovoltaic support is overcome.

[0022] 2. The construction needs of all domestic offshore photovoltaic projects at present are met, the photovoltaic array with multiple pile types, multiple diameters and multiple arrangement spacings is adapted, the special installation ship for offshore photovoltaic components has strong popularization and application value, and has important significance for the constructability of offshore large-scale photovoltaic projects. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 is a plan view of the self-elevating wind power construction platform before the special installation ship for offshore photovoltaic components of the utility model is modified;

[0024] Fig. 2 is a side view of the special installation ship for offshore photovoltaic components of the utility model;

[0025] Fig. 3 is a plan layout view of the main deck of the special installation ship for offshore photovoltaic components of the utility model. DETAILED DESCRIPTION

[0026] The utility model will be further described below with reference to the drawings.

[0027] Please refer to Figs. 1 to 3 The special installation ship for the offshore photovoltaic component is modified from a non-powered self-elevating wind power construction platform, and comprises a platform main body 1, a main crane 3, an auxiliary crane 4, two middle side pontoons 51, two tail side pontoons 52, one tail middle pontoon 53, two pairs of pile grippers 6 and a DP1-level positioning power system.

[0028] The platform main body 1 is a rectangular cuboid with a length of 55.0 m, a width of 31 m and a type depth of 5.5 m; the platform main body 1 comprises a platform bottom plate 11, a main deck 12 and a plurality of cabin rooms separated by longitudinal and transverse bulkheads arranged between the platform bottom plate 11 and the main deck 12; the cabin rooms comprise ballast tanks, fuel tanks, fresh water tanks and engine rooms, the engine rooms are provided with hydraulic systems, various pumps and other auxiliary equipment; the front part of the main deck 12 is provided with a living area 14, and a reinforced area 15 for storing a rock-embedded drilling machine and a hydraulic pile hammer is arranged at the rear part of the main deck 12; the thickness of the main deck 12 in the reinforced area 15 is 20 mm, and the thickness of the main deck 12 in other areas is 14 mm.

[0029] The left bow part, the right bow part, the left side rear part and the right side rear part of the platform main body 1 are respectively provided with one platform pile leg hole, and a reinforcing structure is arranged on the hole wall of each platform pile leg hole; four pile fixing chambers 13 corresponding to the four platform pile leg holes are arranged on the main deck 12, and one platform pile leg 2 is arranged in each of the four pile fixing chambers 13 through a ring beam lifting mechanism 3; the bottom of each platform pile leg 2 is provided with a pile shoe 2A, the outer diameter of the platform pile leg 2 is φ2.8 m, and the length is 75 m; the length* width* height of the pile shoe 2A is 6.7 m*5.7 m*1.4 m, and the area is about 38 square meters.

[0030] A left side recess 141 and a right side recess 142 penetrating the type depth are symmetrically and correspondingly arranged in the left side middle rear part and the right side middle rear part of the platform main body 1; the length of the left side recess 141 and the right side recess 142 is 8 m, and the width is 6.5 m; an arc groove 143 is arranged in the middle part of the stern end of the platform main body 1, and a left floating platform 151 and a right floating platform 152 are correspondingly and symmetrically arranged along the left side and the right side of the arc groove 143, so that the left side surface of the left floating platform 152 and the stern end surface of the platform main body 1 form a left gap 161, and the right side surface of the right floating platform 152 and the stern end surface of the platform main body 1 form a right gap 162.

[0031] The main crane 3 is a pile-rotating crane and comprises a crane base and a main crane boom frame installed on a rotating disc in the crane base, the crane base is fixed on the top surface of the right aft fixed pile room 13, the crane base is a square-topped round structure, i.e., the bottom is square and the top is round; the rotating disc of the crane base is sleeved on the pile leg 2 located at the right aft; the main crane 3 is configured in three working conditions, i.e., the length of the main crane boom frame is 60 m, the lifting weight in the limited rotating area is 640 t; the length of the main crane boom frame is 80 m, the lifting weight in the limited rotating area is 320 t, and the length of the main crane boom frame is 85 m, the lifting weight in the limited rotating area is 150 t.

[0032] The auxiliary crane 4 is installed above the front of the left aft fixed pile room 13.

[0033] Two middle side pontoons 51 are correspondingly filled in the left recess 141 and the right recess 142 of the platform body 1; two tail side pontoons 52 are correspondingly filled in the left notch 161 and the right notch 162 of the platform body 1; the tail middle pontoon 53 is filled in the circular groove 143 of the platform body 1, so that the platform body 1 is changed into a complete rectangular cubic hull; all the pontoons are welded with the platform body 1, and all the pontoons are watertight structures. All the pontoons serve as ballast tanks.

[0034] A pair of pile grippers 6 are symmetrically and oppositely installed at the left front and the right front of the main deck 12, and another pair of pile grippers 6 are symmetrically and oppositely installed at the left middle and the right middle of the main deck 12, the distance between the two pairs of pile grippers 6 is adapted to the north-south distance of four pile foundations of a photovoltaic machine site; each pile gripper 6 is a telescopic pile gripper, and each pile gripper 6 is installed on the main deck 12 through a rotating mechanism, so that each pile gripper 6 rotates between parallel and perpendicular to the length direction of the main deck 12.

[0035] The DP1-level positioning power system comprises a rudder propeller system assembly and a DP1 control system.

[0036] The rudder propeller system assembly comprises two bow rudder propellers 71, two stern rudder propellers 72 and a DP1 control system; wherein the two bow rudder propellers 71 are respectively installed on a front base 710, the two front bases 710 are connected on both sides of the front end surface of the ship body, and the two bow rudder propellers 71 are vertically extended from the outside of the two front bases 710 to the water; the two stern rudder propellers 72 are respectively installed on both sides of the tail of the ship body through a rear base 720, the two rear bases 720 are respectively installed between the front top surface of the two tail side pontoons 52 and the tail top surface of the main deck 12, the two tail side pontoons 52 are provided with a through hole, so that the two stern rudder propellers 72 can be vertically extended to the water; the two bow rudder propellers 71 and the two stern rudder propellers 72 are respectively connected with the diesel engine through a universal shaft, a clutch and an elastic coupling; the diesel engine of the two bow rudder propellers 71 is respectively installed on the two front bases 710; the diesel engine of the two stern rudder propellers 72 is respectively installed on the two rear bases 720;

[0037] The DP1 control system is installed in the centralized control room of the ship and controls the working of the two bow rudder propellers 71 and the two stern rudder propellers 72.

[0038] The special installation ship for offshore photovoltaic components has a total variable load of 1200t, and the main deck 12 has a variable load of 600t; the main deck 12 can be used for placing two pairs of pile grabbers 6, rock-socketed drill machines, hydraulic pile hammers and other construction equipment; the rock-socketed drill machine weighs about 200t, the pile grabber 6 weighs about 200t, and the hydraulic pile hammer weighs about 300t; the above equipment is used for different construction projects; the main deck 12 at other positions has a variable load of 600t, and the main load is ballast water, fresh water and fuel oil.

[0039] The special installation ship for offshore photovoltaic components comprises the following steps when working:

[0040] (1) first, the GPS positioning system and the DP1 level positioning power system are used for positioning and moving in the construction area; at this time, the two pairs of pile grabbers 6 are respectively turned to the inside of the ship body through the rotating mechanism, i.e., parallel to the length direction of the main deck 12; the DP1 level power positioning system is used for accurate positioning of the photovoltaic pile foundation, so that the special installation ship is positioned at the center position of the four pile foundations of a photovoltaic site; then, the two pairs of pile grabbers 6 are respectively turned to the outside of the ship body through the rotating mechanism, so that the two pairs of pile grabbers 6 are perpendicular to the length direction of the main deck 12 and are in an overhanging manner; the telescopic mechanism of the two pairs of pile grabbers 6 is used for positioning the two pairs of pile grabbers 6 at the center of the four pile foundations one by one; the north-south spacing of the four pile foundations of a photovoltaic site is determined by the two pairs of pile grabbers 6 fixed on the main deck 12, and the east-west spacing of the four pile foundations of a photovoltaic site is adjusted by the telescopic amount of the telescopic pile grabber 6;

[0041] (2) The four ring beam lifting mechanisms are used to perform the plug-in pin action to lower and insert the four platform pile legs 2 into the seabed, so as to accurately position the special installation ship, and provide reliable guarantee for subsequent pile foundation positioning and pile planting operations;

[0042] (3) The main crane 3 is used to complete the pile sinking of the four pile foundations, that is, the foundation pile sinking construction of one photovoltaic site, the four pile foundations of one photovoltaic site are sequentially lowered by the main crane 3 and are correspondingly located above the two pairs of pile grippers 6, and the four pile foundations are correspondingly inserted into the two pairs of pile grippers 6, the hydraulic pile hammer is lifted to the top of the pile foundation by the main crane 3, and then the hydraulic pile hammer is started to impact and drive the pile foundation;

[0043] (4) The main crane 3 sequentially lifts the photovoltaic support and photovoltaic panel of the photovoltaic site beside; the main crane 3 lifts the photovoltaic support of the photovoltaic site beside to the four pile foundations of the photovoltaic site beside, and the welding construction personnel perform the welding and reinforcement work of the photovoltaic support and the pile foundation on the small construction ship; since the main crane 3 has a large span, combined with the stability of the special installation ship, the installation accuracy requirement of the photovoltaic panel in centimeter level is met;

[0044] (5) After the pile sinking construction of one photovoltaic site and the installation construction of the photovoltaic support and photovoltaic panel in the span range of the main crane are completed, the control room controls the rotation mechanism of the two pairs of pile grippers 6 to rotate the two pairs of pile grippers 6 back to the inner side of the ship body, and controls the four ring beam lifting mechanisms to perform the plug-in pin action to pull up the four platform pile legs 2, and the special installation ship moves to the next photovoltaic site by the DP1 dynamic positioning system without anchoring positioning.

[0045] The special installation ship of the offshore photovoltaic component can enter the site without relying on the power ship, can drive into the construction site and position, and then the original four platform pile legs 2 are inserted into the seabed to fix the ship body above the water surface by using the reaction force of the seabed on the pile shoes at the bottom of the four platform pile legs 2; the five notches on the original platform body 1 are filled with floating boxes to form the ship body, all the floating boxes also act as ballast tanks, so that the ship body does not need to be lifted to the water surface by the platform pile legs 2; two pairs of telescopic pile grippers 6 are positioned and installed on the ship body, which can solve the problems of pile foundation positioning, horizontal relative deviation control and large-area flow construction. The relative positions of the four pile foundations of one site are accurately ensured, the positioning error between the pile foundations is effectively reduced, the positioning efficiency of the pile foundations is improved, and the four pile foundations of the same site are accurately connected with the integrated large photovoltaic support above.

[0046] The special installation ship of the offshore photovoltaic component overcomes the difficulty that the pile foundation is dense in the construction area and cannot be anchored for operation, the ship can realize integrated operation of piling and photovoltaic support hoisting, the pile foundation construction and the photovoltaic support installation construction are completed at one time, and the difficulty that the ship cannot return to the field to install the photovoltaic support is overcome. The construction demand of all current offshore photovoltaic projects in China is met, and the photovoltaic array with multiple pile types, multiple diameters and multiple arrangement spacings is adapted.

[0047] The above embodiments are only used for illustrating the utility model, and are not limited to the utility model. Those skilled in the art can make various transformations or modifications without departing from the spirit and scope of the utility model. Therefore, all equivalent technical solutions should belong to the scope of the utility model, and should be limited by the claims.

Claims

1. A special installation ship for offshore photovoltaic components, which is refitted from a non-powered self-elevating wind power construction platform, comprising a platform main body, a main crane and an auxiliary crane; the platform main body is substantially a rectangular cuboid and comprises a platform bottom plate, a main deck and a plurality of cabins separated by longitudinal and transverse bulkheads arranged between the platform bottom plate and the main deck, a left bow part, a right bow part, a left side rear part and a right side rear part of the platform main body are each provided with a through-type deep platform pile leg hole, and a pile fixing chamber is arranged on the main deck of the platform main body corresponding to each platform pile leg hole; a platform pile leg is arranged in each of the four pile fixing chambers through a ring beam lifting mechanism; a left side recess and a right side recess are symmetrically and correspondingly arranged in the left side middle rear part and the right side middle rear part of the platform main body; an arc-shaped slot is arranged in the middle of the stern end of the platform main body, and a left floating platform and a right floating platform are correspondingly and symmetrically arranged along the left side and the right side of the arc-shaped slot, so that the left side surface of the left floating platform and the stern end surface of the platform main body form a left gap, and the right side surface of the right floating platform and the stern end surface of the platform main body form a right gap; the main crane is arranged on the platform pile leg in the right side rear part; and the auxiliary crane is arranged above and forward of the pile fixing chamber in the left side rear part. characterized in that The special installation ship further comprises two middle side pontoons, two tail side pontoons, a tail middle pontoon, two pairs of pile grippers and a DP1 level positioning power system. The two middle side pontoons are correspondingly arranged in the left side recess and the right side recess of the platform main body; the two tail side pontoons are correspondingly arranged in the left gap and the right gap of the platform main body; and the tail middle pontoon is arranged in the arc-shaped slot of the platform main body, so that the platform main body is changed into a complete rectangular cuboid hull. One pair of pile grippers is symmetrically and oppositely arranged in the left side front part and the right side front part of the main deck, and the other pair of pile grippers is symmetrically and oppositely arranged in the left side middle part and the right side middle part of the main deck, the distance between the two pairs of pile grippers is adapted to the north-south distance between four pile foundations of a photovoltaic site; each pile gripper is a telescopic pile gripper, and each pile gripper is perpendicular to the length direction of the main deck and is externally suspended. The DP1 level positioning power system comprises a rudder propeller system assembly and a DP1 control system; the rudder propeller system assembly comprises two bow rudders each arranged on the left and right sides of the front end of the platform main body through a front base, two stern rudders each arranged on the left and right sides of the tail of the hull through a rear base, and the two bow rudders and the two stern rudders are sequentially connected with a diesel engine through a universal shaft, a clutch and an elastic coupling; and the DP1 control system is arranged in a centralized control room of the ship and controls the operation of the two bow rudders and the two stern rudders.

2. The vessel dedicated to the installation of offshore photovoltaic components according to claim 1, characterized in that, The two middle side pontoons, the two tail side pontoons and the tail middle pontoon are all welded and fixed with the platform main body and are watertight structures.

3. The vessel dedicated to the installation of offshore photovoltaic structures according to claim 1, characterized in that, The pile grippers are arranged on the main deck through a slewing mechanism, so that each pile gripper can rotate between parallel and perpendicular to the length direction of the main deck.

4. The vessel dedicated to the installation of offshore photovoltaic components according to claim 1, characterized in that, The front base is connected to the front face of the hull; the rear base is installed between the front top face of the stern side buoyancy tank and the rear top face of the main deck.

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