CN116556296A - Self-elevating hydraulic lifting system and method for offshore pile foundation photovoltaic steel platform - Google Patents
Self-elevating hydraulic lifting system and method for offshore pile foundation photovoltaic steel platform Download PDFInfo
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- CN116556296A CN116556296A CN202310320881.4A CN202310320881A CN116556296A CN 116556296 A CN116556296 A CN 116556296A CN 202310320881 A CN202310320881 A CN 202310320881A CN 116556296 A CN116556296 A CN 116556296A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 145
- 239000010959 steel Substances 0.000 title claims abstract description 145
- 238000000034 method Methods 0.000 title claims abstract description 19
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 14
- 230000008859 change Effects 0.000 claims abstract description 9
- 239000011159 matrix material Substances 0.000 claims abstract description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 56
- 229910052757 nitrogen Inorganic materials 0.000 claims description 28
- 238000009434 installation Methods 0.000 claims description 21
- 230000007246 mechanism Effects 0.000 claims description 10
- 210000001503 joint Anatomy 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 230000003993 interaction Effects 0.000 abstract description 7
- 230000003139 buffering effect Effects 0.000 abstract 1
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003090 exacerbative effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/46—Combinations of several jacks with means for interrelating lifting or lowering movements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/048—Arrangements for compressed air preparation, e.g. comprising air driers, air condensers, filters, lubricators or pressure regulators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B2035/4433—Floating structures carrying electric power plants
- B63B2035/4453—Floating structures carrying electric power plants for converting solar energy into electric energy
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0039—Methods for placing the offshore structure
- E02B2017/0043—Placing the offshore structure on a pre-installed foundation structure
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0039—Methods for placing the offshore structure
- E02B2017/0047—Methods for placing the offshore structure using a barge
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B2017/0056—Platforms with supporting legs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Architecture (AREA)
- Analytical Chemistry (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention relates to the technical field of offshore photovoltaics, in particular to a self-elevating hydraulic lifting system and method for an offshore pile foundation photovoltaic steel platform. The invention comprises a plurality of jacking units arranged in a matrix, a connecting unit for connecting the jacking units into a whole, and a control unit for providing power for the jacking units, wherein the jacking units are arranged in a matrix, and the control unit comprises a plurality of jacking units which are arranged in a matrix, wherein the jacking units are connected into a whole, and the jacking units are provided with power supply units: the jacking unit comprises a jacking base and a tower section unit from bottom to top, wherein the jacking base comprises a base, a sliding bottom plate, a temporary support and a hydraulic cylinder; the tower section unit comprises a plurality of sections of tower sections which are movably arranged; the connecting unit comprises a plurality of movable section-shaped reinforcing beams; the control unit comprises a hydraulic pump station and a flow valve group, wherein the hydraulic pump station is connected with each hydraulic cylinder through the flow valve group, and the relative position of the steel platform is kept stable. According to the invention, through the jacking unit in modularized design, various combinations can be carried out according to requirements; and buffering the violent change of the interaction force caused by the relative movement of the steel platform and the receiving ship in the three-degree-of-freedom direction.
Description
Technical Field
The invention relates to the technical field of offshore photovoltaics, in particular to a self-elevating hydraulic lifting system and method for an offshore pile foundation photovoltaic steel platform.
Background
Along with development of the photovoltaic field of the offshore pile foundation, the field site is also changed from offshore to offshore with the water depth reaching about 15 meters, the pile foundation of the offshore photovoltaic is also changed from PHC pile to steel pipe pile gradually, the light Fu Gangping adopting the steel pipe pile as the pile foundation is larger and larger based on the control of the steel pipe pile with better strength and project development cost. When the photovoltaic steel platform is basically lifted and installed by a crane of a crane ship. However, in the installation process of the large-size light Fu Gangping, due to the influence of the marine environmental conditions such as waves, wind and the like and the influence of the truss structure of the steel platform, various movements (rolling, swaying, pitching, swaying) in all directions and the deformation of the steel platform structure can be generated in the hoisting process of the crane ship. The above movement in all directions results in: 1) The steel platform and the steel pipe pile are difficult to butt joint; 2) Affecting the stability of the steel platform, possibly leading to the steel platform toppling; 3) The impact force may cause deformation of the steel platform structure; 4) Further exacerbating the crane vessel motions. Therefore, a self-elevating hydraulic lifting system and a method with compensation function for installing and dismantling an offshore pile foundation light Fu Gangping platform are needed.
Disclosure of Invention
The invention aims to solve the technical problems that: the self-elevating hydraulic lifting system and the method for the offshore pile foundation photovoltaic steel platform are provided, and various combinations can be carried out according to requirements through an elevating unit in modularized design; the action of each jacking unit is cooperatively and cooperatively controlled through the control unit, and the violent change of the interaction force caused by the relative movement of the steel platform and the bearing ship in the transverse direction, the longitudinal direction and the vertical direction is buffered, so that the steel platform and the bearing ship tend to be constant.
The technical scheme of the invention is as follows:
a self-elevating hydraulic lifting system for offshore pile foundation photovoltaic steel platform, includes the jacking unit that a plurality of matrixes set up, links into an organic whole the hookup unit with the jacking unit to and the control unit that provides power for the jacking unit, wherein:
the jacking unit is used for lifting the steel platform and comprises a jacking base and a tower section unit from bottom to top, wherein:
the jacking base comprises a base, a sliding bottom plate, temporary supports and hydraulic cylinders, wherein the base is installed on a deck through the sliding bottom plate, the top of the base is fixed on a hydraulic turntable through four temporary supports, and the hydraulic cylinders are arranged in the base; the temporary support is used for being spliced with the tower section unit, and the hydraulic cylinder is used for providing power for stretching out and lifting the tower section;
the tower section unit comprises a plurality of sections of tower sections which are movably arranged, one end of each tower section is inserted into the temporary support through a slideway, and the other end of each tower section is connected with the steel platform under the action of the hydraulic cylinder;
the connecting unit is used for connecting the jacking units and the steel platform and comprises a plurality of movable section-shaped stiffening beams, wherein ear plates are arranged at two ends of each movable section-shaped stiffening beam, and a locking mechanism is arranged in the middle of each movable section-shaped stiffening beam, so that the jacking units are movably assembled into a whole through the locking mechanism;
the control unit is used for cooperatively controlling the actions of all jacking units and comprises a hydraulic pump station and a flow valve group, wherein the hydraulic pump station is connected with all hydraulic cylinders through the flow valve group, and the relative position of the steel platform is kept stable.
Preferably, the jacking units are of modularized design, the number of the jacking units is selected according to the size of the steel platform, the number of tower section units is selected according to the height of the requirement, and the number of movable section-shaped stiffening beams is selected according to the requirement.
Preferably, the tower section unit is provided with a position sensor and a pressure sensor, the position sensor and the pressure sensor are connected with a hydraulic pump station, the hydraulic pump station controls the hydraulic cylinders at corresponding positions to compensate acting forces in the transverse, longitudinal and vertical directions according to the external forces born by the steel platform and detected by the position sensor and the pressure sensor, so that the steel platform does not generate severe change due to the relative movement of the external forces, the movement amplitude is greatly reduced, and the stability of the system is improved.
Preferably, the movable node-shaped reinforcing beam is an assembly body, and the installation position of the movable node-shaped reinforcing beam at least comprises the following parts:
the lifting units are arranged between the front lifting unit and the rear lifting unit in a staggered manner, transversely arranged between the left lifting unit and the right lifting unit which are adjacent to each other, and obliquely arranged between the lifting units and the steel platform.
Preferably, the steel platform comprises steel structures arranged in a rectangular shape and reinforcing ribs positioned between the steel structures; and a butt flange connected with the steel pipe pile is arranged at the bottom of the steel platform.
The invention adopts the following additional technical scheme:
a self-elevating hydraulic lifting method for a photovoltaic steel platform of an offshore pile foundation, comprising the following steps:
s1, selecting a plurality of groups of jacking bases, tower section units and movable section-shaped reinforcing beams for assembling at a wharf according to the size and weight of a transportation steel platform and the height required by transportation;
s2, after assembly, lifting each lifting unit for bearing the lifting system on the ship to the height required by installation by combining stress analysis;
s3, lifting and lowering the transportation steel platform from the wharf to the end part of the jacking unit for fixing, and supporting and fixing the steel platform through the movable section-shaped reinforcing beam;
s4, transferring to a steel platform installation construction site, and controlling the compensation of acting forces of hydraulic cylinders in all jacking units in the transverse direction, the longitudinal direction and the vertical direction in a coordinated linkage mode through a flow valve group in the transportation process so as to keep the relative position of the steel platform stable;
s5, after the ship arrives at the installation site, the ship is regulated to be in position, the lifting system regulates the butt joint position of the steel platform and the steel pipe pile, and after the relative position regulation meets the installation requirement, the lifting system contracts to lower the steel platform;
s6, after the steel platform is lowered and installed in place, the bearing ship and the lifting system exit the installation site together, and the next steel platform is transported and installed; vice versa, the dismantling is performed.
Preferably, in the step S4, the hydraulic pump station is driven by hybrid liquid and electricity, and includes a nitrogen storage device, a nitrogen control valve group, a nitrogen generating device and a piston accumulator, the hydraulic cylinder is connected with the nitrogen storage device via the piston accumulator, and the nitrogen storage device is connected with the nitrogen generating device via the nitrogen control valve group; a flow valve group is arranged between the hydraulic cylinder and the piston type energy accumulator.
Preferably, in the step S5, the step of adjusting the butt joint position of the steel platform and the lowered steel pipe pile by the lifting system means that the lifting system adjusts the inclination angle of the steel platform, so that the steel platform which is slowly lowered to the bottom still maintains a certain inclination angle; the steel platform is directly butted with the steel pipe pile, so that the time for finding the angle is shortened.
Compared with the prior art, the invention has the following beneficial effects:
the lifting system adopts a unit modularization design, can combine various jacking units according to requirements, and has good adaptability;
the lifting system is provided with a longitudinal compensation system, and buffers the severe change of the interaction force caused by the relative movement of the steel platform and the receiving ship in the transverse direction, the longitudinal direction and the vertical direction, so that the interaction force tends to be constant; the lifting system has a manual operation mode and an automatic operation mode, so that the relative stability of the steel platform can be ensured, and the butting difficulty is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic diagram of the system of the present invention.
Fig. 2 is a schematic structural view of the jacking unit.
Fig. 3 is a schematic structural view of the jacking base.
FIG. 4 is a second schematic view of the structure of the lifting base.
Fig. 5 is a schematic view of the structure of the tower section unit.
Fig. 6 is a schematic structural view of the coupling unit.
Fig. 7 is a schematic structural diagram of the control unit.
Fig. 8 is a schematic structural view of a steel platform.
Fig. 9 is an electrical schematic diagram of the manual compensation mode.
Fig. 10 is an electrical schematic of the active compensation mode.
In the figure: 1. receiving a ship; 2. a steel platform; 21. a butt flange; 3. a jacking unit; 31. jacking the base; 311. a hydraulic cylinder; 312. a transverse motor; 313. a longitudinal motor; 32. a tower section unit; 33. a coupling unit; 331. ear plates; 332. a locking mechanism; 34. a control unit; 341. nitrogen storage means; 342. a nitrogen control valve group; 343. a nitrogen generating device; 344. a piston accumulator; 345. a flow valve block; 4. and (5) a steel pipe pile.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Example 1
As shown in fig. 1, the present embodiment provides a self-elevating hydraulic lifting system for a photovoltaic steel platform of an offshore pile foundation, which comprises a plurality of jacking units 3 arranged in a matrix, a coupling unit 33 for coupling the jacking units 3 into a whole, and a control unit 34 for providing power for the jacking units 3.
As shown in fig. 2, the jacking unit 3 is configured to lift the steel platform 2, and includes a jacking base 31 and a tower section unit 32 from bottom to top. Each jacking unit 3 comprises a set of jacking base 31 and a plurality of tower section units 32, and the base is provided with a sliding bottom plate which can be installed on a deck to realize fixation. Each base is provided with a hydraulic cylinder, and four temporary supports fixed on the hydraulic turntable are arranged at the top of the base. With the starting tower section unit 32 in a position above the brackets and the hydraulic cylinders fully retracted, the first row of tower section units 32 may be automatically inserted between the brackets using the slides. After in place, the hydraulic cylinders extend and raise the tower sections above the temporary supports. The ramp repeats the cycle until the desired height is reached, before the hydraulic cylinders lower the tower sections to the ramp.
The sliding bottom plate comprises a sliding frame, a guide rail mechanism, a transverse motor 312 and a longitudinal motor 313; the sliding frame is a rectangular frame, and a base is arranged inside the rectangular frame; the guide rail mechanism is arranged at the bottom of the sliding frame, is connected with the deck, and is arranged between the sliding frame and the deck and between the base and the sliding frame; a transverse motor 312 fixed to the lower surface of the glide frame for driving the base to effect relative movement between the glide frame and the deck; a longitudinal motor 313 for effecting relative movement between the glide frame and the base; and the hydraulic cylinder 311 is used for vertically realizing the relative motion between the steel platform and the bearing ship.
The lifting system is driven by a hydraulic system with gas-liquid mixture through a compensating system in the transverse direction, the longitudinal direction and the vertical direction, and is used for controlling the interaction force of the ship and the module in the longitudinal direction, so that the interaction force does not change drastically along with the relative movement of the module and the receiving ship 1, the movement amplitude of the module and the receiving ship 1 is greatly reduced, and the stability of the system is improved.
The lifting system is mainly technically characterized in that: the modular design, the number of jacking units 3 can be selected according to the size of the steel platform 2, the number of tower section units 32 can be selected according to the height of the requirement, and the number of movable section-shaped reinforcing beams can be selected according to the requirement; the three-dimensional directions are adjustable, so that the adaptability is high; the self-aligned steel jacking module can save time; the compact design saves the occupied space; the system is integrated, can be matched with a position sensor and a pressure sensor for application, and can enhance stability; the variability of the occupied area is very suitable for meeting different field use; all the systems are containerized, and the economic and efficient transportation can be realized.
As shown in fig. 3 and 4, a hydraulic cylinder is built in the jacking base 31, four temporary supports fixed on the hydraulic turntable are mounted on the top of the base, and the base is provided with a sliding bottom plate which can be mounted on a deck to realize fixation. With the hydraulic cylinders fully retracted in a position above the starting tower section unit 32, slides may be used to automatically insert the tower sections between the brackets. After in place, the hydraulic cylinders extend and raise the tower sections above the support. The support frame repeats the cycle until the desired height is reached, before the hydraulic cylinders lower the tower sections onto the support frame.
As shown in fig. 5, the tower section unit 32 is of a steel structure design, has a self-alignment function, high structural bearing capacity, strong unbalanced load resistance and a modularized design, can realize on-site multi-set combined use, meets wider requirements, has a compact structure, saves occupied space, can be matched with a weighing system for application, enhances stability, and can meet different on-site use.
As shown in fig. 5, the coupling unit 33 is configured to couple the jacking unit 3 and the jacking unit 3, and the jacking unit 3 and the steel platform 2, and includes a plurality of movable section-shaped stiffening beams, wherein ear plates 331 are disposed at two ends of the movable section-shaped stiffening beams, and a locking mechanism 332 is disposed in the middle of the movable section-shaped stiffening beams, and the jacking unit 3 is movably assembled into a whole through the locking mechanism 332. The movable section-shaped stiffening beam is an assembly body, the left connecting rod and the right connecting rod are connected through a double-end stud, and locking fixation is realized through a locking nut. Due to the cooperation of the stud and the lock nut, a movable assembly between the two connection lugs 331 can be achieved.
As shown in fig. 7, the control unit 34 is configured to cooperatively control the actions of each jacking unit 3, and includes a hydraulic pump station and a flow valve group 345, where the hydraulic pump station is connected to each hydraulic cylinder through the flow valve group 345, so as to keep the relative position of the steel platform 2 stable. The plastic spraying surface of the hydraulic pump station has the advantages of corrosion resistance, strong pollution resistance, light and compact design, light weight of the whole machine and convenience for on-site jacking and transporting. The durable design is suitable for severe working condition occasions, the external adjustable pressure valve is convenient for recalibrating working pressure, pressure overload can be prevented, the motor starter has overload, overheat and electric leakage protection functions, and the durable reversing valve can be remotely operated by selecting an electromagnetic reversing valve. The flow valve group 345 is arranged, and the compensation of acting forces of each jacking unit 3 in the transverse direction, the longitudinal direction and the vertical direction is cooperatively controlled, so that the relative position of the steel platform 2 is stabilized, and the transportation and the installation are convenient.
As shown in fig. 8, the steel platform 2 comprises steel structures arranged in a rectangular shape, and reinforcing ribs positioned between the steel structures; the bottom of the steel platform 2 is provided with a butt flange 21 connected with the steel pipe pile 4. The steel platform 2 in the invention refers to a large-size light Fu Gang platform, and belongs to a steel structure with relatively difficult transportation, installation and disassembly.
Example 2
On the basis of the embodiment 1, the embodiment provides a self-elevating hydraulic lifting method for a photovoltaic steel platform of an offshore pile foundation, which comprises the following steps:
s1, selecting a plurality of groups of jacking bases 31, tower section units 32 and movable section-shaped reinforcing beams for assembling at a wharf according to the size and weight of a transportation steel platform 2 and the height required for transportation;
s2, after assembly, lifting each jacking unit 3 of the lifting system on the bearing ship 1 to the height required by installation by combining stress analysis;
s3, lifting and lowering the transportation steel platform 2 from a wharf to the end part of the jacking unit 3 for fixing, and supporting and fixing the steel platform 2 through a movable section-shaped reinforcing beam;
s4, transferring to a steel platform installation construction site, and controlling the compensation of acting forces of hydraulic cylinders in all jacking units in the transverse direction, the longitudinal direction and the vertical direction in a coordinated linkage mode through a flow valve group in the transportation process so as to keep the relative position of the steel platform stable;
s5, after the ship reaches an installation site, the bearing ship 1 is adjusted to be in position, the lifting system adjusts the butt joint position of the steel platform 2 and the steel pipe pile 4, and after the relative position adjustment meets the installation requirement, the lifting system contracts to lower the steel platform 2;
s6, after the steel platform 2 is lowered and installed in place, the bearing ship 1 and the lifting system exit the installation site together, and the next steel platform 2 is transported and installed; vice versa, the dismantling is performed.
Preferably, in the step S4, the hydraulic pump station is driven by hybrid liquid and electricity, and includes a nitrogen storage device 341, a nitrogen control valve set 342, a nitrogen generation device 343 and a piston accumulator 344, the hydraulic cylinder is connected to the nitrogen storage device 341 via the piston accumulator 344, and the nitrogen storage device 341 is connected to the nitrogen generation device 343 through the nitrogen control valve set 342; a flow valve block 345 is provided between the hydraulic cylinder and the piston accumulator 344.
Preferably, in the step S5, the adjustment of the butt joint position of the steel platform 2 and the lowered steel pipe pile 4 by the lifting system means that the lifting system adjusts the inclination angle of the steel platform 2, so that the steel platform 2 which is slowly lowered to the bottom still maintains a certain inclination angle; the steel platform 2 is directly butted with the steel pipe pile 4, so that the time for finding the angle is shortened.
It should be noted that: in the process of installing the steel platform 2, the method mainly comprises the following three processes:
the method comprises the following steps of 1) extending and lifting a tower section to a height required by installation by a hydraulic cylinder of a lifting system;
step 2), the steel platform 2 is dropped to the end part of the lifting system and fixed; transferring to a photovoltaic steel platform 2 installation construction site;
and 3) after the barge is adjusted and positioned, the lifting system contracts the hydraulic cylinder, slowly drops the steel platform 2 to the end part of the steel pipe pile 4 and connects the steel pipe pile 4.
Example 3
Based on embodiment 2, the lifting system has the following multiple compensation modes, so that the relative stability of the steel platform 22 can be ensured, and the docking difficulty is reduced.
The hydraulic cylinder 311, the transverse motor 312 and the longitudinal motor 313 each have a plurality of compensation modes: manual compensation mode, active pressure compensation mode, active position compensation mode, passive pressure compensation mode, passive position compensation mode; the compensation mode is selected according to actual needs.
As shown in fig. 9 and 10, in the manual compensation mode, the position sensor and the pressure sensor are used to collect relevant information of the steel platform 2, and the handle is used to drive the three driving mechanisms of the transverse motor 312, the longitudinal motor 313 and the hydraulic cylinder 311 to perform reverse compensation, so that the relative constant between the jacking unit 3 and the receiving ship 1 is ensured.
The active pressure compensation mode comprises the following steps: utilizing historical data of the steel platform 2 to establish a prediction model, calculating the output torque of the transverse motor 312 and the longitudinal motor 313 and the thrust of the hydraulic cylinder 311 according to the difference value between the pressure between the jacking unit 3 fed back in real time and the steel platform 2 and the set target pressure and the pressure change caused by external excitation at the next moment predicted by the prediction model, so as to adjust the positions of the transverse motor 312 and the longitudinal motor 313 in the horizontal direction, and actively driving the switch of the nitrogen generating device 343, thereby utilizing the nitrogen control valve group 342 to adjust the hydraulic cylinder 311 for active compensation;
an active position compensation mode comprising the following steps: by utilizing historical data of the steel platform 2, a prediction model is established, the relative position of the jacking unit 3 and the elongation of the hydraulic cylinder 311 are calculated and output according to the relative position of the jacking unit 3 and the deviation between the actual position and the set position of the hydraulic cylinder 311, which are fed back in real time, and the actual position change of the jacking unit 3 and the hydraulic cylinder 311, which are caused by the next time predicted by the prediction model, so that the positions of the horizontal motor 312 and the longitudinal motor 313 in the horizontal direction are adjusted, and the switch of the nitrogen generating device 343 is actively driven, so that the hydraulic cylinder 311 is adjusted to be actively compensated by utilizing the nitrogen control valve group 342.
The passive pressure compensation mode comprises the following steps: a prediction model is established by utilizing historical data of the steel platform 2, and torque of the transverse motor 312 and torque of the longitudinal motor 313 and thrust of the hydraulic cylinder 311 are calculated and output according to a difference value between pressure between the jacking unit 3 fed back in real time and the steel platform 2 and a set target pressure, so that the hydraulic cylinder 311 is driven by a hydraulic pump station to perform reverse pressure compensation, and the jacking unit 3 and the receiving ship 1 are ensured to be kept relatively constant; or the jacking unit 3 is utilized to compensate the interaction force in the horizontal plane between the steel platform 2 and the receiving ship 1;
a passive position compensation mode comprising the steps of: a prediction model is established by utilizing historical data of the steel platform 2, and according to deviation between the position of the jacking unit 3 and the position of the steel platform 2 and the set position which are fed back in real time, the relative position of the jacking unit 3 and the elongation of the hydraulic cylinder 311 are calculated, so that the hydraulic cylinder 311 is driven by a hydraulic pump station to perform position compensation, and the jacking unit 3 and the receiving ship 1 are ensured to be kept relatively constant; or the jacking unit 3 is used for compensating the relative position change between the steel platform 2 and the receiving ship 1 in the horizontal plane.
Although the present invention has been described in detail by way of preferred embodiments with reference to the accompanying drawings, the present invention is not limited thereto. Various equivalent modifications and substitutions may be made in the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and it is intended that all such modifications and substitutions be within the scope of the present invention/be within the scope of the present invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A self-elevating hydraulic lifting system for a photovoltaic steel platform of an offshore pile foundation, which is characterized by comprising a plurality of jacking units (3) arranged in a matrix, a connecting unit (33) for connecting the jacking units (3) into a whole, and a control unit (34) for providing power for the jacking units (3), wherein:
the jacking unit (3) is used for lifting the steel platform (2) and comprises a jacking base (31) and a tower section unit (32) from bottom to top, wherein:
the jacking base (31) comprises a base, a sliding bottom plate, temporary supports and hydraulic cylinders, wherein the base is arranged on a deck through the sliding bottom plate, the top of the base is fixed on a hydraulic turntable through four temporary supports, and the hydraulic cylinders are arranged in the base; the temporary support is used for being spliced with the tower section unit (32), and the hydraulic cylinder is used for providing power for stretching out and lifting the tower section;
the tower section unit (32) comprises a plurality of sections of movably arranged tower sections, one end of each tower section is inserted into the temporary support through a slideway, and the other end of each tower section is connected with the steel platform (2) under the action of a hydraulic cylinder;
the connecting unit (33) is used for connecting the jacking unit (3) with the jacking unit (3), and the jacking unit (3) with the steel platform (2), and comprises a plurality of movable section-shaped stiffening beams, wherein the two ends of each movable section-shaped stiffening beam are provided with lug plates (331), and the middle of each movable section-shaped stiffening beam is provided with a locking mechanism (332), and the jacking unit (3) is movably assembled into a whole through the locking mechanism (332);
the control unit (34) is used for cooperatively controlling the actions of each jacking unit (3) and comprises a hydraulic pump station and a flow valve group (345), wherein the hydraulic pump station is connected with each hydraulic cylinder through the flow valve group (345) to keep the relative position of the steel platform (2) stable.
2. The self-elevating hydraulic lifting system for an offshore pile foundation photovoltaic steel platform according to claim 1, wherein the jacking units (3) are of modular design, the number of the jacking units (3) is selected according to the size of the steel platform (2), the number of tower segment units (32) is selected according to the height of the demand, and the number of movable segment-shaped reinforcing beams is selected according to the demand.
3. The self-elevating hydraulic lifting system for the offshore pile foundation photovoltaic steel platform according to claim 1, wherein the lifting platform (32) is provided with a sensor and a pressure sensor, the position sensor and the pressure sensor are connected with the control system (34), and the control system (34) controls the hydraulic cylinders at corresponding positions to compensate acting forces in the transverse direction, the longitudinal direction and the vertical direction according to the external force born by the steel platform (2) detected by the position sensor and the pressure sensor, so that the steel platform (2) does not change severely due to the relative movement of the external force, the movement amplitude is greatly reduced, and the stability of the system is improved.
4. The jack-up hydraulic lifting system for offshore pile foundation photovoltaic steel platforms of claim 1, wherein the movable node-shaped stiffening beams are assembled, and the installation positions of the movable node-shaped stiffening beams at least comprise the following parts:
the lifting units are arranged between the front lifting unit (3) and the rear lifting unit (3) in a staggered manner, are transversely arranged between the adjacent left lifting unit and the adjacent right lifting unit (3), and are obliquely arranged between the lifting units (3) and the steel platform (2).
5. A jack-up hydraulic lifting system for offshore pile foundation photovoltaic steel platforms according to claim 1, characterized in that the steel platform (2) comprises steel structures arranged in a rectangular shape, and reinforcing bars between the steel structures; and a butt flange (21) connected with the steel pipe pile (4) is arranged at the bottom of the steel platform (2).
6. A self-elevating hydraulic lifting method for a photovoltaic steel platform of an offshore pile foundation, which uses the self-elevating hydraulic lifting system for a photovoltaic steel platform of an offshore pile foundation according to any one of claims 1-5, characterized in that the following steps are adopted:
s1, selecting a plurality of groups of jacking bases (31), tower section units (32) and movable section-shaped reinforcing beams to assemble at a wharf according to the size, the weight and the height required by transportation of a transportation steel platform (2);
s2, after assembly, lifting each jacking unit (3) of the lifting system on the bearing ship (1) to the height required by installation by combining stress analysis;
s3, lifting and lowering the transportation steel platform (2) from a wharf to the end part of the jacking unit (3) for fixing, and supporting and fixing the steel platform (2) through a movable section-shaped reinforcing beam;
s4, transferring to a steel platform (2) installation construction site, and controlling the compensation of acting forces of hydraulic cylinders in all jacking units (3) in the transverse, longitudinal and vertical directions in a coordinated linkage mode through a flow valve group (345) in the transportation process, so that the relative position of the steel platform (2) is kept stable;
s5, after the steel pipe pile reaches an installation site, the bearing ship (1) is adjusted to be in position, the lifting system adjusts the butt joint position of the steel platform (2) and the steel pipe pile (4), and after the relative position adjustment meets the installation requirement, the lifting system contracts to lower the steel platform (2);
s6, after the steel platform (2) is lowered and installed in place, the bearing ship (1) and the lifting system exit the installation site together, and the next steel platform (2) is transported and installed; vice versa, the dismantling is performed.
7. The self-elevating hydraulic lifting method for offshore pile foundation photovoltaic steel platform according to claim 6, wherein in step S4, the hydraulic pump station is driven by hybrid liquid and electricity, and comprises a nitrogen storage device (341), a nitrogen control valve group (342), a nitrogen generation device (343) and a piston accumulator (344), the hydraulic cylinder is connected with the nitrogen storage device (341) through the piston accumulator (344), and the nitrogen storage device (341) is connected with the nitrogen generation device (343) through the nitrogen control valve group (342); a flow valve group (345) is arranged between the hydraulic cylinder and the piston type energy accumulator (344).
8. The self-elevating hydraulic lifting method for offshore pile foundation photovoltaic steel platform according to claim 6, wherein in step S5, the lifting system adjusts the butt joint position of the steel platform (2) and the lowered steel pipe pile (4), which means that the lifting system adjusts the inclination angle of the steel platform (2) so that the slowly lowered steel platform (2) still maintains a certain inclination angle; the steel platform (2) is directly butted with the steel pipe pile (4), so that the time for finding the angle is shortened.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310320881.4A CN116556296A (en) | 2023-03-29 | 2023-03-29 | Self-elevating hydraulic lifting system and method for offshore pile foundation photovoltaic steel platform |
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| CN202310320881.4A CN116556296A (en) | 2023-03-29 | 2023-03-29 | Self-elevating hydraulic lifting system and method for offshore pile foundation photovoltaic steel platform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117284934A (en) * | 2023-09-05 | 2023-12-26 | 中交第三航务工程局有限公司 | Lifting appliance control system and method with hydraulic compensation function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117284934A (en) * | 2023-09-05 | 2023-12-26 | 中交第三航务工程局有限公司 | Lifting appliance control system and method with hydraulic compensation function |
| CN117284934B (en) * | 2023-09-05 | 2024-05-14 | 中交第三航务工程局有限公司 | Lifting appliance control system and method with hydraulic compensation function |
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