CN114000983B

CN114000983B - Jacket and jacket construction method

Info

Publication number: CN114000983B
Application number: CN202111284526.3A
Authority: CN
Inventors: 甘家战; 李永旺; 黄宗嵩; 蔡峰; 李建; 徐辉; 王飞; 宋庆浩; 王宁
Original assignee: China International Marine Containers Group Co Ltd; Yantai CIMC Raffles Offshore Co Ltd; CIMC Offshore Engineering Institute Co Ltd; Haiyang CIMC Raffles Offshore Co Ltd
Current assignee: China International Marine Containers Group Co Ltd; Yantai CIMC Raffles Offshore Co Ltd; CIMC Offshore Engineering Institute Co Ltd; Haiyang CIMC Raffles Offshore Co Ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2023-03-17
Anticipated expiration: 2041-11-01
Also published as: CN114000983A

Abstract

The invention provides a jacket and a jacket construction method. The jacket comprises an upper section and a lower section; the bottom of the upper section is provided with four lower folding ports; the lower section comprises a first lower split and a second lower split; the first lower split and the second lower split respectively comprise two lower main legs, at least one lower scissor-brace group and a diagonal brace component. The top of each lower main leg is provided with an upper folding port; the upper folding port is in adaptive butt joint with the lower folding port so that the upper section is in butt joint above the lower section; the inclined strut assembly of the first lower split comprises two first inclined rods which are respectively connected to the top and the bottom of the lower main leg, and the second end ends of the two first inclined rods form two connecting surfaces; the inclined strut assembly of the second lower split comprises two second inclined rods which are respectively connected to the top and the bottom of the lower main leg, wherein the end part of the second end of one second inclined rod and the outer peripheral surface of the second inclined rod form two mounting surfaces, and the mounting surfaces are respectively matched with the connecting surfaces, so that the first lower split is connected with the second lower split.

Description

Jacket and jacket construction method

Technical Field

The invention relates to the technical field of ocean engineering and electric power engineering, in particular to a jacket and a jacket construction method.

Background

With the gradual depletion of traditional energy, the development of new energy has great significance. Offshore wind power, as one of new energy sources, has been developed rapidly recently and has a large market scale. The jacket is used as a foundation support of the offshore wind turbine, and the building form and the efficiency of the jacket are improved, so that the development of offshore wind power can be promoted.

At present, the conventional jacket construction mode is generally horizontal and vertical. The horizontal construction can reduce the construction difficulty in the field, particularly the high-altitude operation difficulty, but the requirement on the sea is too high, the jacket needs to be turned over and erected, the installation difficulty and risk are too large, and large potential safety hazards exist. Vertical construction has a large amount of fitting-out spare owing to highly too high, and the jacket top needs the welding installation, because basic condition such as current site equipment limits, high altitude construction can't go on.

The vertical construction mode usually needs a large amount of overhead operation, which is not beneficial to the lifting of the construction period and the reduction of the cost. Taking a four-pile jacket as an example, due to factors such as structure, the main body supporting part of the jacket is constructed by an upper section and a lower section. The upper subsection structure is complex, a large number of bulk structures and outfitting pieces (ship leaning pieces, J-shaped pipes, monitoring equipment and the like) exist, too much overhead operation exists during vertical construction, the construction period is long, and the construction cost is high. The lower section is often divided into four sheet bodies to be normally folded, so that too many folding openings are formed, the folding openings are high in altitude, the construction difficulty of the precision positioning, welding and other aspects of the folding openings is greatly increased, the improvement of the construction efficiency is not facilitated, and adverse factors such as large folding support design difficulty, high tool cost and the like are caused due to too many folded support points and too high folded support points.

Disclosure of Invention

The invention aims to provide a jacket and a jacket construction method which are low in construction difficulty, high in construction efficiency and low in construction cost, and solve the problems in the prior art.

In order to solve the technical problem, the invention provides a jacket, which comprises an upper section and a lower section which are sequentially arranged along the axial direction;

the bottom of the upper section is provided with four lower folding ports;

the lower section comprises a first lower split and a second lower split which enclose into a circle; the first lower split body and the second lower split body respectively comprise two lower main legs, at least one group of lower cross brace groups arranged between the two lower main legs and inclined brace components correspondingly arranged on the side parts of the lower main legs; the top of each lower main leg is provided with an upper folding port; the upper folding opening is in matched butt joint with the lower folding opening so that the upper subsection is in butt joint above the lower subsection;

the inclined strut assembly of the first lower split comprises two first inclined rods which are respectively connected to the top and the bottom of the lower main leg, the first ends of the two first inclined rods are connected with the lower main leg, the second ends of the two first inclined rods are close to each other and have intervals, and the end parts of the second ends of the two first inclined rods form two connecting surfaces of the first lower split; the inclined strut assembly of the second lower split comprises two second inclined rods which are respectively connected to the top and the bottom of the lower main leg, the first ends of the two second inclined rods are connected with the lower main leg, the two second inclined rods are connected with each other to form a connection point, one of the second inclined rods protrudes out of the connection point along the extending direction of the second inclined rod, the end part of the second end of the second inclined rod and the outer peripheral surface of the second inclined rod at the connection point form two mounting surfaces of the second lower split, and the mounting surfaces are respectively matched with the connection surfaces, so that the first lower split is connected with the second lower split.

In one embodiment, the two connection surfaces are a first connection surface and a second connection surface, respectively, the first connection surface is a horizontal surface, and the second connection surface is an inclined surface;

in the two mounting surfaces, the second end part of the second inclined rod exceeding the connecting point forms a first mounting surface, the other mounting surface is a second mounting surface, the first mounting surface is a horizontal plane, and the second mounting surface is an inclined plane;

the first connecting surface is matched and butted with the first mounting surface, and the second connecting surface is matched and butted with the second mounting surface.

In one embodiment, the first connection surface is located below the second connection surface;

the first mounting surface is located below the second mounting surface.

In one embodiment, the lower main legs extend in a horizontal direction when the first lower division body and the second lower division body are constructed.

In one embodiment, the jacket further comprises four insert legs, which are disposed in one-to-one correspondence with the four lower main legs;

each insertion leg comprises an upper insertion leg part and a lower stopping block, the top of the upper insertion leg part is provided with a connecting port butted with the bottom of the lower main leg, and the bottom of the upper insertion leg part is connected with the lower stopping block;

when the first lower division body and the second lower division body are respectively constructed, the top of the upper part of each insertion leg is connected with the bottom of the corresponding lower main leg, and the bottom of the upper part of each insertion leg is connected with the top of the corresponding lower stopper.

In one embodiment, the upper section comprises four upper main legs and a plurality of groups of upper cross bracing groups, and the four upper main legs are vertically arranged in an inclined manner and enclose a circle; at least one upper scissor support group is arranged between every two adjacent upper main legs from top to bottom, and each upper scissor support group comprises two upper inclined supports in cross connection; the bottom end of each upper main leg is provided with the lower folding opening.

In one embodiment, the top of the upper section is provided with four upper assembling ports;

the jacket further comprises a fan foundation transition section; four lower assembling ports are formed in the bottom of the fan foundation transition section, and the lower assembling ports are in adaptive butt joint with the upper assembling ports, so that the fan foundation transition section is in butt joint above the upper subsection.

In one embodiment, the wind turbine foundation transition section includes:

a bottom deck;

a general column, the center of which is positioned on the bottom deck;

the inner platform is arranged inside the general column;

a bottom cylinder located at the bottom of the bottom deck;

the four corner structures are symmetrically arranged on the periphery of the general column and are connected with the bottom deck;

four outer platforms arranged corresponding to the four corner structures; each outer platform is arranged between two adjacent corner structures.

The four conduit legs are arranged corresponding to the four corner structures; the bottom of each conduit leg is provided with the lower assembling port.

The present invention also provides a jacket construction method for constructing a jacket as described above, comprising the steps of:

manufacturing a lower section; providing a lower main leg, a lower scissor support group and an inclined support assembly, respectively manufacturing a first lower split body and a second lower split body, and then folding and installing the first lower split body and the second lower split body to form a lower section; the first lower split body and the second lower split body respectively comprise a pair of lower main legs, a plurality of groups of lower scissor support groups which are arranged between the two lower main legs and are arranged up and down, and inclined support assemblies which are arranged corresponding to the lower main legs, each inclined support assembly of the first lower split body comprises two first inclined rods, the first ends of the two first inclined rods are respectively connected with the tops and the bottoms of the lower main legs, and the second ends of the two first inclined rods are close to each other and have intervals; the inclined strut assembly of the second lower split comprises two second inclined rods, the first ends of the two second inclined rods are respectively connected with the top and the bottom of the lower main leg, the second ends are mutually close and connected and are provided with connecting points, and one of the second inclined rods protrudes out of the connecting points along the extending direction of the second inclined rod;

manufacturing an upper subsection: providing an upper main leg and an upper scissor support group, respectively manufacturing a first upper split, a second upper split, a third upper split and a fourth upper split, and then folding and installing the first upper split, the second upper split, the third upper split and the fourth upper split into upper sections; the first upper split and the fourth upper split respectively comprise a pair of upper main legs and at least one group of upper bridging groups arranged between the two upper main legs, and the second upper split and the third upper split respectively comprise at least one group of upper bridging groups;

closing the upper section and the lower section: and hoisting the upper subsection to the upper part of the lower subsection, and fixing the upper subsection above the lower subsection through the butt joint of the lower closing port of the lower main leg and the upper closing port of the upper main leg.

In one embodiment, in the step of manufacturing the lower section, after the first lower split and the second lower split are manufactured, the first lower split and the second lower split are hoisted to a support tool arranged in advance, and the first lower split and the second lower split are folded; the supporting tool is used for supporting the part of the second inclined rod protruding out of the connecting point.

In one embodiment, the first lower split body is hoisted, the precision of the upper folding port is measured, then the second lower split body is hoisted, the first lower split body and the second lower split body are folded, and the precision of the upper folding port is measured;

and the connection surface of the first inclined rod and the installation surface of the second inclined rod are matched in a long-cut end supplementing mode.

In one embodiment, the first lower division body and the second lower division body are constructed in a lateral lying state.

In one embodiment, the jacket further comprises insert legs disposed in one-to-one correspondence with the lower main legs, the insert legs comprising insert leg upper portions and lower stops; the manufacturing of the lower segment further comprises the following steps:

providing an upper part of an insertion leg and a lower stop, wherein in the assembling process of the first lower split body and the second lower split body respectively, the top of the upper part of each insertion leg is connected with the bottom of the corresponding lower main leg, and the top of each lower stop is connected with the bottom of the upper part of the corresponding insertion leg, so that the folding of the first lower split body and the insertion leg and the folding of the second lower split body and the insertion leg are realized.

In one embodiment, the accuracy of the insertion leg is also measured when the first lower part-body and the second lower part-body are closed.

In one embodiment, the jacket further comprises a fan base transition section disposed at the top of the upper section;

before the step of closing the upper segment and the lower segment, the method further comprises the following steps:

providing a bottom deck, a military column, an inner platform, a bottom cylinder, four corner structures, four conduit legs and four outer platforms, installing the inner platforms into the military column, reversely folding the bottom cylinder by taking the bottom deck as a tire, hoisting and turning over after folding, enabling the bottom cylinder to be positioned below and the bottom deck to be positioned above, normally folding two corner structures to obtain an intermediate structure, then hoisting and folding the intermediate structure and the integrated military column and the inner platforms, then folding the other two corner structures, then installing the conduit legs corresponding to the four corner structures, and finally folding the outer platforms to obtain the fan foundation transition section;

and hoisting the fan foundation transition section to the top of the upper subsection, and closing the fan foundation transition section and the upper subsection.

In one embodiment, before the step of hoisting the fan foundation transition section to the top of the upper segment and closing the fan foundation transition section and the upper segment, the method further includes:

measuring and adjusting the precision of a lower assembly opening which is used for being folded with the upper section and is arranged at the bottom of the fan foundation transition section;

after the step of hoisting the fan foundation transition section to the top of the upper subsection and closing the fan foundation transition section and the upper subsection, the method further comprises the following steps:

and measuring and adjusting the precision of a lower closing opening at the bottom of the upper section and the levelness of a flange plate of the fan foundation transition section.

According to the technical scheme, the invention has the advantages and positive effects that:

the jacket comprises an upper section and a lower section, wherein the upper section and the lower section are respectively built and then are closed and fixed. The lower section is divided into a first lower split and a second lower split, wherein the first lower split is provided with two connecting surfaces, the second lower split is provided with two mounting surfaces, and the connecting surfaces are matched with the mounting surfaces to realize the folding of the first lower split and the second lower split, namely, the high-altitude operation of the lower section during construction only comprises the butt joint operation of the two connecting surfaces and the two mounting surfaces, so that the high-altitude operation amount is reduced, and the safety is improved.

Furthermore, when the first lower split body and the second lower split body are folded, namely the connecting surface and the mounting surface are in butt joint, the plane is easy to butt joint with the plane, the slope of the inclined surface and the slope of the inclined surface are small, the welding difficulty is reduced, and the number of supporting points is small, so that the supporting tool is simple in structure and easy to disassemble and assemble, and the efficiency is improved.

Drawings

Fig. 1 is a front view of one embodiment of the jacket of the present invention.

Fig. 2 is a top view of one embodiment of the jacket of the present invention.

Fig. 3 is a schematic view of the construction of the upper and lower sections of the jacket of the present invention.

Fig. 4 is a schematic structural view of the first lower division body and the second lower division body separated in the present invention.

Fig. 5 is a schematic structural view of the first lower split and the second lower split being closed together according to the present invention.

Fig. 6 is a schematic view showing the construction of the first lower split body and the insertion leg according to the present invention.

Fig. 7 is a schematic structural view of the first lower split body and the inserted leg after being folded.

Fig. 8 is a view illustrating the construction of the second lower division body and the insertion leg according to the present invention.

Fig. 9 is a schematic structural view of the second lower split body and the inserted leg after being folded.

Fig. 10 is a schematic structural view of a first upper split body in the present invention.

Fig. 11 is a schematic structural view of the folding of the first upper split body, the second upper split body and the fourth upper split body in the present invention.

Fig. 12 is a schematic structural view of the third upper division body, the first upper division body, the second upper division body and the fourth upper division body of the present invention.

Fig. 13 is a schematic view of the folding structure of the bottom deck and the bottom cylinder according to the present invention.

FIG. 14 is a schematic structural view of a base transition section of a wind turbine of the present invention with the outer platform removed.

The reference numerals are explained below: 800. a jacket; 1. an insertion leg; 11. inserting the upper part of the leg; 111. an upper stop; 112. a middle circular tube; 12. a lower stop; 2. lower segmentation; 21. a first lower split; 22. a second lower split; 23. a lower main leg; 24. a lower scissor-brace group; 25. a first diagonal member; 26. a second diagonal member; 3. upper segmentation; 31. a first upper split; 32. a second upper split; 33. a third upper split; 34. a fourth upper split; 35. an upper main leg; 36. an upper scissor-bracing group; 4. a fan foundation transition section; 41. a bottom deck; 42. a general column; 43. a bottom cylinder; 44. a corner structure; 45. a conduit leg;

500. and supporting the tool.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below in the specification. It is to be understood that the invention is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the invention and the description and drawings are to be regarded as illustrative in nature and not as restrictive.

For further explanation of the principles and construction of the present invention, reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

The invention provides a jacket, which has the advantages of less high-altitude operation, easier positioning, less supporting tools, shorter folding period, lower construction difficulty, higher construction efficiency and lower construction cost in the construction process.

Specifically, referring to fig. 1, 2 and 3, the jacket 800 includes an insert leg 1, a lower section 2, an upper section 3 and a wind turbine foundation transition section 4, which are sequentially arranged from bottom to top along the axial direction.

An insertion leg 1 is provided at the bottom for insertion into the seabed. Specifically, the number of the insertion legs 1 is four.

Each insertion leg 1 comprises an insertion leg upper part 11 and a lower stop 12. The top of the upper part 11 of the insertion leg is connected to the bottom of the lower section 2 and the top of the lower stop 12 is connected to the bottom of the upper part 11 of the insertion leg.

Specifically, the upper portion 11 of the insertion leg comprises an upper stop 111 and a middle circular tube 112, the top of the upper stop 111 has a connection port for abutting against the bottom of the lower segment 2, and the middle circular tube 112 is disposed at the bottom of the upper stop 111 for connecting with the lower stop 12. The insertion leg upper part 11 is manufactured in advance, i.e. the upper stop 111 and the middle round tube 112 are fixedly connected in advance. Separate insertion leg upper portions 11 and lower stops 12 are ready for use.

Further, the diameter of the lower stopper 12 is gradually reduced from the top to the bottom in the axial direction, so that it can be easily inserted into the seabed.

With reference to fig. 4 and 5, the lower segment 2 comprises a first lower sub-body 21 and a second lower sub-body 22 enclosing a ring. Each of the first lower sub-body 21 and the second lower sub-body 22 includes two lower main legs 23, at least one lower cross brace set 24 disposed between the two lower main legs 23, and a diagonal brace assembly correspondingly disposed at a side portion of the lower main leg 23. The top of each lower main leg 23 is provided with an upper folding port, and the bottom of each lower main leg 23 is provided with a butt port which is butted with the upper part 11 of the inserting leg.

That is, the lower section 2 includes four lower main legs 23, and the four lower main legs 23 are vertically and obliquely arranged and enclose a circle. And four lower main legs 23 are provided in one-to-one correspondence with the four insertion legs 1.

Specifically, the four lower main legs 23 are all disposed obliquely outward from top to bottom. Each lower scissor set 24 includes two cross-connected lower sprags. The ends of the two lower sprags in each set of lower scissor sets 24 are connected to the lower main leg 23.

In this embodiment, the lower scissor groups 24 in the first lower split 21 are one group, and the lower scissor groups 24 in the second lower split 22 are also one group. In other embodiments, two or other sets of numbers may be set according to actual needs.

The sprag assembly of the first lower division 21 is defined as a first lower sprag assembly. The first lower diagonal bracing assembly comprises two first diagonal rods 25. Wherein, two first down tubes 25 all incline to set up, and two first down tubes 25 all have first end and second end. Specifically, the first ends of the two first diagonal members 25 are connected to the top and bottom of the lower main leg 23, respectively, and the second ends are close to each other with a space. Specifically, the first diagonal rod 25 located above is inclined downward from top to bottom, and the first diagonal rod 25 located below is inclined upward from top to bottom. The second ends of the two first inclined rods 25 are spaced apart from each other, i.e. the second ends of the two first inclined rods 25 are not connected. And the second ends of the two first diagonal rods 25 constitute a connecting surface.

The two connection surfaces are respectively a first connection surface and a second connection surface. Wherein, the first connecting surface is a plane, and the second connecting surface is an inclined surface. Namely, the connecting surface of one of the first inclined rods 25 is a plane, and the connecting surface of the other first inclined rod 25 is an inclined surface. Specifically, in the present embodiment, the first connection surface is located below the second connection surface. That is, the connecting surface of the first inclined rod 25 positioned at the lower part is a plane, and the connecting surface of the first inclined rod 25 positioned at the upper part is an inclined surface. The inclined surface is inclined downward in a direction away from the corresponding lower main leg 23.

In another embodiment, the first connection face is located above the second connection face. That is, the connecting surface of the first inclined rod 25 located at the upper side is a plane, and the connecting surface of the first inclined rod 25 located at the lower side is an inclined surface which is inclined upward in a direction away from the corresponding lower main leg 23.

The sprag assembly of the second lower sub-body 22 is defined as a second lower sprag assembly. The second lower diagonal bracing assembly includes two second diagonal rods 26. Wherein, two second down tubes 26 all incline to set up, and two second down tubes 26 all have first end and second end. Specifically, first ends of the two second diagonal rods 26 are connected to the top and bottom of the lower main leg 23, respectively, and the two second diagonal rods 26 are connected to each other to have a connection point. Namely, one of the second inclined rods 26 is inclined downwards from top to bottom, the other second inclined rod 26 is inclined upwards from top to bottom, and the two are connected in an inclined way.

One of the second diagonal rods 26 protrudes out of the connection point along its extending direction, that is, the second end of the second diagonal rod 26 protrudes out of the connection point, and the second end of the second diagonal rod 26 is a plane to form a mounting surface, and the outer peripheral surface of the second end of the second diagonal rod 26 far away from the other second diagonal rod 26 forms another mounting surface. The second end of the other second diagonal rod 26 is connected to the second diagonal rod 26 to form a connection point.

The two mounting surfaces are respectively a first mounting surface and a second mounting surface. Wherein, the second end of the second inclined rod 26 protruding out of the connection point forms a first mounting surface, and the other is a second mounting surface. The first installation surface is a plane, and the second installation surface is an inclined plane.

Further, after the first lower split 21 and the second lower split 22 are folded, the two first diagonal rods 25 and the two second diagonal rods 26 form a scissors support set together, and an included angle between the first diagonal rods 25 and the second diagonal rods 26 is about 90 degrees. Furthermore, the inclination angle of the second mounting surface is about 90 degrees, so that the inclination angles of the second connecting surface and the second mounting surface are smaller, and further the welding construction is easier.

In the present embodiment, the first mounting surface is located below the second mounting surface. That is, the second end portion and the outer peripheral surface of the second diagonal member 26 located above constitute a first mounting surface and a second mounting surface, respectively, and the second end portion of the second diagonal member 26 located below is connected to the second diagonal member 26 located above. And the end surface of the second end part of the second diagonal rod 26 positioned above is a plane and is matched with the connecting surface of the first diagonal rod 25 positioned below in the first lower diagonal support component. The top peripheral surface of the second diagonal rod 26 positioned above is an inclined surface, and is matched with the connecting surface of the first diagonal rod 25 positioned above in the first lower diagonal support component.

When the lower section 2 is manufactured, the lower section is correspondingly manufactured according to the specific structures of the first lower sub-body 21 and the second lower sub-body 22. Wherein, lower main leg 23 and lower scissors brace group 24, lower main leg 23 all passes through welding mode fixed connection with first bracing subassembly and second bracing subassembly down.

The first and second

lower divisions

21 and 22 are separately constructed. After the construction is completed, the first lower sub-body 21 and the second lower sub-body 22 are closed to obtain the lower section 2.

Referring to fig. 6, 7, 8 and 9, the first and second

lower sections

21 and 22 are constructed separately in a lateral lying state, that is, the lower main leg 23 is in a substantially horizontal state. In addition, in the process of constructing the first lower sub-body 21 and the second lower sub-body 22, the corresponding insertion legs 1 are constructed and connected to the lower main legs 23. Specifically, when the lower main leg 23 is substantially horizontal, the axes of the insert leg upper portions 11 and the lower stoppers 12 also extend substantially in the horizontal direction, and the top of each insert leg upper portion 11 is connected to the bottom of the corresponding lower main leg 23, and the bottom of each insert leg upper portion 11 is connected to the top of the corresponding lower stopper 12.

When constructing the first lower part 21 and the insertion leg 1, fitting-out parts, such as J-tubes, grout tubes, etc., are installed at the same time, and finally the lower stopper 12 is fixedly attached to the bottom of the insertion leg upper part 11.

Accordingly, when constructing the second lower sub-body 22 and the insertion leg 1, fitting-out parts, such as J-tubes, grout tubes, etc., are installed at the same time, and finally the lower stopper 12 is fixedly attached to the bottom of the insertion leg upper portion 11.

The construction of the first lower division body 21 and the insertion leg 1 and the construction of the second lower division body 22 and the insertion leg 1 can be simultaneously performed, so that the construction period can be saved and the construction efficiency can be improved.

The first lower split body 21 and the second lower split body 22 are folded, and the first lower split body 21 and the second lower split body 22 are turned to a standing state, so that the lower main leg 23 stands. At this time, both insertion legs 1 are connected to the bottom portions of the first and second

lower division bodies

21 and 22.

The first lower division body 21 and the second lower division body 22 in the standing state are close to each other, and the connection surface is butted with the installation surface, that is, the planar connection surface is butted with the planar installation surface, and the inclined connection surface is butted with the inclined installation surface. When the first lower split 21 and the second lower split 22 are close to each other, the connecting surface and the mounting surface are subjected to acting force and reacting force, and the length is cut and shortened, so that the accuracy measurement difficulty is reduced.

And when the first lower sub-body 21 and the second lower sub-body 22 are folded, only two points need to be supported, for example, the second diagonal rod 26 positioned above in the second lower diagonal support assembly is supported, and the part of the second diagonal rod 26 protruding out of the connection point is supported. Specifically, the support is performed by the support tool 500. Therefore, the lower section 2 is divided into the first lower division body 21 and the second lower division body 22, and the required supporting tool 500 is simple and convenient during construction, and the cost of the supporting tool 500 is low. And fewer supporting tools 500 are convenient to disassemble and high in efficiency.

And integrally welding the first lower split body 21 and the second lower split body 22, polishing and spraying paint to finish the manufacture of the lower section 2.

The lower section 2 is built and the lower section 2 and the insertion leg 1 are folded, only the first lower split body 21 and the second lower split body 22 need to work high above the ground when being folded, and the rest parts are all operated on the ground, so that the building difficulty is reduced, and the building cost is reduced. And the supporting points are fewer, so that the supporting tool 500 is fewer, the structure of the supporting tool 500 is simple and convenient, and the cost of the supporting tool 500 is reduced.

And the butt joint of the connecting surface and the mounting surface can be realized by attaching the connecting surface and the mounting surface through acting force and reacting force, and the accuracy measurement difficulty is reduced by long-cut short-repair.

Referring to fig. 10, 11 and 12, the upper section 3 includes four upper main legs 35 and a plurality of upper scissor sets 36. The four upper main legs 35 are vertically and obliquely arranged and enclose a circle, at least one group of upper cross brace group 36 is arranged between every two adjacent upper main legs 35 from top to bottom, and each upper cross brace group 36 comprises two upper cross braces in cross connection. The bottom end of each upper main leg 35 is provided with a lower folding opening. The lower folding opening is matched and butted with the upper folding opening, so that the upper section 3 is butted above the lower section 2.

In the upper section 3 of the present embodiment, four upper main legs 35 are each disposed obliquely outward from top to bottom. Two groups of upper cross brace groups 36 are arranged between two adjacent upper main legs 35, and the end parts of two upper inclined braces in each group of upper cross brace groups 36 are connected with the upper main legs 35.

The upper section 3 includes four sheet bodies, which are a first upper split 31, a second upper split 32, a third upper split 33, and a fourth upper split 34. Each of the first upper split 31 and the third upper split 33 includes two upper main legs 35 and two upper scissor-brace sets 36 located between the two upper main legs 35. The second upper sub-body 32 and the fourth upper sub-body 34 each include two upper scissor-brace sets 36 arranged up and down.

When the upper section 3 is manufactured, the first upper division body 31, the second upper division body 32, the third upper division body 33 and the fourth upper division body 34 are respectively manufactured and correspondingly manufactured according to the specific structures of the first upper division body 31, the second upper division body 32, the third upper division body 33 and the fourth upper division body 34.

In manufacturing the above-described structures, the outfitting required for the jacket 800 is attached to the corresponding first upper division 31, second upper division 32, third upper division 33, and fourth upper division 34.

Since the first upper split body 31, the second upper split body 32, the third upper split body 33 and the fourth upper split body 34 are respectively constructed, there is no cross work, the construction efficiency is improved, and the construction period is reduced.

After the construction is completed, the first upper division body 31, the second upper division body 32, the third upper division body 33, and the fourth upper division body 34 are folded and installed to obtain the upper section 3.

After the first upper division body 31, the second upper division body 32, the third upper division body 33 and the fourth upper division body 34 are manufactured, the first upper division body 31 is positioned and installed at a set position, at this time, the first upper division body 31 lies on the side, namely, the upper main legs 35 extend approximately horizontally, the second upper division body 32 and the fourth upper division body 34 are positioned and installed on the two upper main legs 35 respectively by taking the two upper main legs 35 of the first upper division body 31 as supports, and finally the third upper division body 33 is positioned and installed by taking the side surfaces of the second upper division body 32 and the third upper division body 33 as supports.

After the third upper division body 33 is installed, the first upper division body 31, the second upper division body 32, the third upper division body 33 and the fourth upper division body 34 are integrally welded, and then polished and painted, so that the upper section 3 is manufactured.

The fan foundation transition section 4 is used for installing a fan. Specifically, the wind turbine foundation transition section 4 comprises a bottom deck 41, an inner platform, a bottom cylinder 43, four corner structures 44, four conduit legs 45 and four outer platforms.

The bottom deck 41 includes a central portion and four peripheral portions spaced apart from each other on the periphery of the central portion. The four peripheral parts are provided with mounting holes far away from the central part.

The military columns 42 and bottom cylinders 43 are listed at the top and bottom of the bottom deck 41. The military column 42 is centered on the bottom deck 41, specifically on the center portion. The inner platform is disposed inside the general pillar 42. The four corner structures 44 are symmetrically disposed on the outer periphery of the general pillar 42 and connected to the bottom deck 41, specifically, the outer periphery.

The four conduit legs 45 are respectively inserted into the mounting holes and correspondingly connected with the four corner structures 44. The bottom of the four conduit legs 45 is provided with a lower assembly opening. The top of the upper section 3 has an upper fitting opening, in particular an upper fitting opening provided at the top of the upper main leg 35. The lower assembling port is in butt joint with the upper assembling port in a matched mode, so that the fan foundation transition section 4 is in butt joint above the upper section 3.

Four outer platforms are provided corresponding to the four corner structures 44. Each outer platform is disposed between two adjacent corner structures 44.

In the process of building the fan foundation transition section 4, referring to fig. 13, the bottom deck 41 is used as a tire, and the bottom round pipe is reversely folded, that is, the bottom round pipe is on the top and the bottom deck 41 is on the bottom. After folding, the lifting and turning are carried out, so that the bottom deck 41 is arranged above and the bottom round pipe is arranged below. Two corner structures 44 are normally closed, that is, two corner structures 44 are installed on bottom deck 41, and two corner structures 44 are adjacent. The early folded general column 42 and the inner platform are then hoisted onto the bottom deck 41 and installed as shown in fig. 14. And finally, sequentially installing the outer platforms to finish the construction of the fan foundation transition section 4.

Compared with the method of installing the general column 42 after installing the four corner structures 44 in the related art, the installation sequence of installing the two corner structures 44, installing the general column 42, and installing the remaining two corner structures 44 in the embodiment is not only convenient for construction, but also difficult to deform the general column 42. Also, the military post 42 and the corner structure 44 can be manufactured simultaneously, and the two corner structures 44 are first manufactured and then installed, then the military post 42 is built, then the installation of the military post 42 is performed, the remaining corner structure 44 is manufactured while the military post 42 is installed, and the installation of the corner structure 44 is continued after the corner structure 44 is manufactured. Even with the above installation sequence, the fabrication of the general columns 42 and the corner structures 44 can be arranged reasonably, saving time and improving efficiency.

And after the construction of the fan foundation transition section 4 is finished, measuring the precision of the lower assembly opening. Meanwhile, the precision of an upper assembly opening at the top of the upper section 3 is measured, and the fan foundation transition section 4 is hoisted to the upper section 3 to be integrally welded. After welding, measuring and adjusting the precision of a lower closing opening at the bottom of the upper section 3 and adjusting the levelness of a flange plate of the fan foundation transition section 4, and finally finishing the integral manufacture of the upper section 3 and the fan foundation transition section 4.

And finally, folding the whole of the upper section 3 and the fan foundation transition section 4, the whole of the lower section 2 and the inserting legs 1, measuring and adjusting the whole precision of the jacket 800, and finishing the whole construction of the jacket 800.

Specifically, the upper segment 3 and the fan foundation transition section 4 are integrally hoisted to the upper side of the lower segment 2 and the integral inserting leg 1, so that the lower folding port is in butt joint with the upper folding port.

In the embodiment, the whole high-altitude operation amount of the jacket 800 is small, the required supporting tools 500 are fewer, the construction cost and the construction period are reduced, and the construction safety is improved.

The present invention also provides a method of constructing a jacket 800 for constructing the jacket 800 described above. The method can avoid a large amount of overhead operation, improve the safety of the construction process, save the construction time and improve the production efficiency.

Specifically, the method of constructing the jacket 800 includes the steps of:

s1, manufacturing a lower segment 2: providing a lower main leg 23, a lower scissor-brace group 24, a first diagonal rod 25 and a second diagonal rod 26, respectively manufacturing a first lower split 21 and a second lower split 22, and folding and installing the first lower split 21 and the second lower split 22 into the lower section 2.

The first lower split body 21 and the second lower split body 22 respectively comprise a pair of lower main legs 23, a plurality of groups of lower scissor support groups 24 which are arranged between the two lower main legs 23 and are arranged up and down, and inclined support components which are arranged corresponding to the lower main legs 23, the inclined support components of the first lower split body 21 comprise two first inclined rods 25, the first ends of the two first inclined rods 25 are respectively connected with the top and the bottom of the lower main legs 23, and the second ends are close to each other and have intervals; the diagonal member of the second lower sub-body 22 comprises two second diagonal rods 26, wherein first ends of the two second diagonal rods 26 are respectively connected with the top and the bottom of the lower main leg 23, second ends are mutually close and connected to form a connection point, and one of the second diagonal rods 26 protrudes out of the connection point along the extending direction thereof.

Specifically, the first lower division body 21 and the second lower division body 22 are in a lateral lying state, that is, the lower main leg 23 is in a substantially horizontal state, when they are separately constructed. In addition, the corresponding insertion legs 1 are assembled and connected to the lower main leg 23 during the process of constructing the first lower sub body 21 and the second lower sub body 22. Specifically, when the lower main leg 23 is substantially horizontal, the axes of the insert leg upper portions 11 and the lower stoppers 12 also extend substantially in the horizontal direction, and the top of each insert leg upper portion 11 is connected to the bottom of the corresponding lower main leg 23, and the bottom of each insert leg upper portion 11 is connected to the top of the corresponding lower stopper 12.

The first lower split body 21 and the second lower split body 22 are folded, and the first lower split body 21 and the second lower split body 22 are turned to a standing state, so that the lower main leg 23 stands. At this time, both insertion legs 1 are connected to the bottoms of the first and second

lower division bodies

21 and 22.

The first lower division body 21 and the second lower division body 22 in the standing state are close to each other, and the connection surface is butted with the installation surface, that is, the planar connection surface is butted with the planar installation surface, and the inclined connection surface is butted with the inclined installation surface. When the first lower split body 21 and the second lower split body 22 are close to each other, the connecting surface and the mounting surface can be subjected to long-cutting short-repairing through acting force and reacting force, and the accuracy measurement difficulty is reduced.

And when the first lower split 21 and the second lower split 22 are folded, only two points need to be supported, such as the second inclined rod 26 located above in the second lower inclined strut assembly, and the part of the second inclined rod 26 protruding out of the connection point is supported. Therefore, the lower section 2 is divided into the first lower sub-body 21 and the second lower sub-body 22, and the required tooling is simple and convenient during construction, and the tooling cost is low.

S2, manufacturing an upper segment 3: providing an upper main leg 35 and an upper cross brace group 36, respectively manufacturing a first upper split 31, a second upper split 32, a third upper split 33 and a fourth upper split 34, and then folding and installing the first upper split 31, the second upper split 32, the third upper split 33 and the fourth upper split 34 into an upper section 3.

The first upper split 31 and the fourth upper split 34 each include a pair of upper main legs 35 and at least one upper cross brace set 36 disposed between the two upper main legs 35, and the second upper split 32 and the third upper split 33 each include at least one upper cross brace set 36.

Specifically, the first upper division body 31, the second upper division body 32, the third upper division body 33, and the fourth upper division body 34 are constructed separately. After the construction is completed, the first upper division body 31, the second upper division body 32, the third upper division body 33 and the fourth upper division body 34 are folded and installed to obtain the upper section 3.

After the first upper division body 31, the second upper division body 32, the third upper division body 33 and the fourth upper division body 34 are manufactured, the first upper division body 31 is positioned and installed at a set position, at the moment, the first upper division body 31 lies on the side, namely, the upper main legs 35 extend approximately horizontally, the two upper main legs 35 of the first upper division body 31 are used as supports to respectively position and install the second upper division body 32 and the fourth upper division body 34 on the two upper main legs 35, and finally, the side faces of the second upper division body 32 and the third upper division body 33 are used as supports to position and install the third upper division body 33.

S3, folding the upper section 3 and the lower section 2: the upper section 3 is hoisted to the upper part of the lower section 2, and the upper section 3 is fixed above the lower section 2 through the butt joint of the lower folding port of the lower main leg 23 and the upper folding port of the upper main leg 35.

Specifically, after the upper section 3 and the lower section 2 are manufactured, the upper section 3 is conveyed to a folding place where the lower section 2 is located. The upper section 3 is hoisted to above the lower section 2 and the upper and lower closure ports are butted, so that the upper section 3 is fixed on the lower section 2 to obtain the jacket 800.

After the upper section 3 and the lower section 2 are integrally folded to obtain the jacket 800, the jacket 800 is transported to a set sea area.

It should be noted that the order of making the lower segment 2 and the upper segment 3 is not sequential, that is, the step S1 and the step S2 are not sequential, and they can also be performed simultaneously. By adopting the simultaneous construction mode, the occupied area of raw materials can be reduced, a large amount of time can be saved, the construction period of projects is shortened, and the production efficiency is greatly improved.

Further, the folding of the insertion leg 1 of the jacket 800 with the lower section 2 is also included in step S1.

In particular, separate insertion leg upper parts 11 and lower stops 12 are provided, i.e. the insertion leg upper parts 11 are not connected to the lower stops 12. When the first lower division body 21 and the second lower division body 22 are constructed, the top of each insertion leg upper portion 11 is connected to the bottom of the corresponding lower main leg 23, and the top of each lower stopper 12 is connected to the bottom of the corresponding insertion leg upper portion 11, so that the first lower division body 21 and the insertion leg 1 are folded and the second lower division body 22 and the insertion leg 1 are folded.

Further, when the first and second

lower divisions

21 and 22 are closed, the accuracy of the inserting leg 1 is also measured. Wherein the dimensional accuracy of each insertion leg 1 and the positional accuracy of the insertion leg 1 need to be measured. The dimensions include the length, width and height of the insertion leg 1. The position refers to the position where each insertion leg 1 is located. Preferably, the relative positional accuracy between the four insertion legs 1 can also be measured.

Further, the construction of the fan base transition section 4 and the folding of the fan base transition section 4 and the upper section 3 are also included before the step S3.

Specifically, a bottom deck 41, a military post 42, an inner platform, a bottom cylinder 43, four corner structures 44, four conduit legs 45 and four outer platforms are provided, the inner platforms are installed in the military post 42, the bottom cylinder 43 is reversely folded by using the bottom deck 41 as a tire, the bottom cylinder 43 is lifted and turned over after being folded, the bottom cylinder 43 is positioned above the bottom deck 41 and the bottom deck 41 is positioned below the bottom deck, two corner structures 44 are normally folded to obtain an intermediate structure, the folded intermediate structure and the integrated military post 42 and the inner platforms are lifted, then the other two corner structures 44 are folded, the four conduit legs 45 are installed corresponding to the four corner structures 44, and finally the outer platforms are folded to obtain the fan foundation transition section 4.

Wherein the two corner structures 44 installed first are located adjacent to each other.

And after the fan foundation transition section 4 is built, hoisting the fan foundation transition section 4 to the top of the upper subsection 3, and closing the fan foundation transition section 4 and the upper subsection 3.

After the folding, the precision of a lower closing opening at the bottom of the upper section 3 is measured and adjusted, and the levelness of a flange plate of the fan basic transition section 4 is adjusted, so that the integral manufacturing of the upper section 3 and the fan basic transition section 4 is finally completed.

When the upper section 3 and the lower section 2 are folded, the integral of the fan foundation transition section 4 and the upper section 3 is hoisted to the upper part of the integral of the lower section 2 and the inserting leg 1, and the fan foundation transition section and the upper section are fixed.

The overall overhead working amount of the jacket 800 construction method in the embodiment is small, the required support tools 500 are fewer, the construction cost and period are reduced, and the construction safety is improved.

the jacket comprises an upper section and a lower section, wherein the upper section and the lower section are respectively built and then are closed and fixed. The lower section is divided into a first lower split body and a second lower split body, the first lower split body is provided with two connecting surfaces, the second lower split body is provided with two mounting surfaces, the connecting surfaces are matched with the mounting surfaces to realize the folding of the first lower split body and the second lower split body, namely, the high-altitude operation of the lower section during the construction only comprises the butt joint operation of the two connecting surfaces and the two mounting surfaces, the high-altitude operation amount is reduced, and the safety is improved.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A jacket is characterized by comprising an upper section and a lower section which are sequentially arranged along the axial direction;

the bottom of the upper section is provided with four lower folding ports;

the lower section comprises a first lower split and a second lower split which enclose into a circle; the first lower split body and the second lower split body respectively comprise two lower main legs, at least one group of lower cross brace groups arranged between the two lower main legs and inclined brace assemblies correspondingly arranged on the side parts of the lower main legs; the top of each lower main leg is provided with an upper folding port; the upper folding opening is in fit butt joint with the lower folding opening, so that the upper section is in butt joint above the lower section;

2. A jacket according to claim 1, wherein the two connection surfaces are a first connection surface and a second connection surface, respectively, the first connection surface being a horizontal surface and the second connection surface being an inclined surface;

3. A jacket according to claim 2, wherein the first connection face is located below the second connection face;

the first mounting surface is located below the second mounting surface.

4. A jacket as set forth in claim 1, wherein the lower main legs each extend in a horizontal direction when the first and second lower sub-bodies are constructed.

5. A jacket according to claim 1, further comprising four insert legs disposed in one-to-one correspondence with the four lower main legs;

6. A jacket as set forth in claim 1, wherein said upper section includes four upper main legs and a plurality of upper scissor sets, said four upper main legs being vertically inclined and enclosing a circle; at least one upper scissor support group is arranged between every two adjacent upper main legs from top to bottom, and each upper scissor support group comprises two upper inclined supports in cross connection; the bottom end of each upper main leg is provided with the lower folding opening.

7. A jacket as claimed in claim 1, wherein the top of the upper section is provided with four upper fitting ports;

the jacket further comprises a fan foundation transition section; the bottom of the fan foundation transition section is provided with four lower assembling ports, and the lower assembling ports are in adaptive butt joint with the upper assembling ports, so that the fan foundation transition section is in butt joint above the upper subsection.

8. A jacket according to claim 7, wherein the wind turbine foundation transition section comprises:

a bottom deck;

a general column, the center of which is positioned on the bottom deck;

the inner platform is arranged inside the general column;

a bottom cylinder located at the bottom of the bottom deck;

four outer platforms arranged corresponding to the four corner structures; each outer platform is arranged between two adjacent corner structures

9. A jacket construction method for constructing a jacket according to any one of claims 1 to 8, comprising the steps of:

manufacturing an upper segment: providing an upper main leg and an upper scissor support group, respectively manufacturing a first upper split, a second upper split, a third upper split and a fourth upper split, and then folding and installing the first upper split, the second upper split, the third upper split and the fourth upper split into upper sections; the first upper split and the fourth upper split respectively comprise a pair of upper main legs and at least one group of upper bridging groups arranged between the two upper main legs, and the second upper split and the third upper split respectively comprise at least one group of upper bridging groups;

folding the upper section and the lower section: and hoisting the upper subsection to the upper part of the lower subsection, and fixing the upper subsection above the lower subsection through the butt joint of the lower closing port of the lower main leg and the upper closing port of the upper main leg.

10. The jacket construction method according to claim 9, wherein in the step of manufacturing the lower section, after the first lower split body and the second lower split body are manufactured, the first lower split body and the second lower split body are hoisted to a support tool arranged in advance, and the first lower split body and the second lower split body are folded; the supporting tool is used for supporting the part of the second inclined rod protruding out of the connecting point.

11. A jacket construction method according to claim 10, wherein the first lower split is hoisted and the accuracy of the upper closure is measured, and then the second lower split is hoisted and the first lower split and the second lower split are closed and the accuracy of the upper closure is measured;

12. A jacket construction method according to claim 9, wherein the first and second lower division bodies are constructed in a side-lying state.

13. A jacket construction method according to claim 9, wherein the jacket further comprises insert legs provided in one-to-one correspondence with the lower main legs, the insert legs comprising insert leg upper portions and lower stops; the manufacturing of the lower segment further comprises the following steps:

14. A jacket construction method according to claim 13, wherein the accuracy of the insert leg is also measured when the first and second lower split bodies are closed.

15. A jacket construction method according to claim 9, wherein the jacket further comprises a fan base transition section disposed atop the upper section;

16. A jacket construction method as claimed in claim 15, further comprising, prior to the steps of hoisting the wind turbine foundation transition section to the top of the upper section and bringing together the wind turbine foundation transition section and the upper section: