CN110671278B - Reverse balance flange node and application method thereof - Google Patents
Reverse balance flange node and application method thereof Download PDFInfo
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- CN110671278B CN110671278B CN201911032107.3A CN201911032107A CN110671278B CN 110671278 B CN110671278 B CN 110671278B CN 201911032107 A CN201911032107 A CN 201911032107A CN 110671278 B CN110671278 B CN 110671278B
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- stiffening plate
- flange
- tower
- upper flange
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/11—Joints, e.g. ball joints, universal joints
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
Abstract
The invention relates to a reverse balance flange joint, which comprises an upper flange tower barrel and a lower flange tower barrel, wherein a tightening stiffening plate is welded on the inner wall of the upper flange tower barrel, a guiding stiffening plate is welded on the inner wall of the lower flange tower barrel, the upper surface of the tightening stiffening plate is connected with the upper flange plate through structural adhesive, the lower surface of the guiding stiffening plate is connected with the lower flange plate through structural adhesive, bolt holes are formed in the upper flange plate and the lower flange plate, and high-strength bolts penetrate through the upper flange plate and the lower flange plate through the bolt holes to connect the upper flange tower barrel and the lower flange tower barrel; the support stiffening plate and the guide stiffening plate are respectively provided with a mounting hole, connecting rods which are clamped with the corresponding stiffening plate are respectively arranged in the mounting holes, and the two connecting rods are fixedly connected with the annular auxiliary mechanism which is arranged on the inner sides of the support stiffening plate and the guide stiffening plate. Compared with the prior art, the invention has the advantages of less welding quantity, simple processing technology, high fatigue resistance level of the tower, no deformation of the tower during transportation and the like.
Description
Technical Field
The invention belongs to the technical field of connection of structural steel towers of wind power generation towers in structural engineering, and particularly relates to a direct-bearing type reverse balance flange connection node of a steel tower and application thereof.
Background
At present, a large-diameter steel pipe tower is often adopted as a supporting structure of the wind driven generator, and the performance of a large-diameter steel tower cylinder connecting node is important to ensuring the normal operation of the wind driven generator.
The flange plate of the traditional forged flange has larger thickness, the whole flange plate end face is milled flat, the workload is large, the processing is difficult, the manufacturing cost is high, and the connecting bolts are easy to loosen under the action of fatigue load; the existing reverse balance flanges (ZL 200920291676.5, ZL201120088100.6 and ZL 201620467194.0) comprise flange plates arranged in a reverse mode and balance surfaces arranged on the inner side of the tower in a centripetal mode of stiffening plates, the steel consumption of the flange is low, the rigidity is high, the processing difficulty and the manufacturing cost are reduced, the bolts are increased by the heightened stiffening plates, the accurate application of the pretension force of the bolts is facilitated, and the looseness resistance of the bolts is improved. However, the existing reverse balance flange has more welding seams, including a plurality of welding seams of a flange plate and a cylinder wall, a stiffening plate and a flange plate, and a stiffening plate and a cylinder wall, the factory welding workload is large, the welding seams of the flange plate and the cylinder wall are separated by the stiffening plate, automatic welding cannot be performed, manual welding is difficult, and the quality of the welding seams is difficult to ensure; the flange is only by the flexible pull rod of opposite pulling in the transportation process, and bending rigidity is insufficient, and deformation is easy to occur, so that the roundness deviation of the tower barrel is larger, and the installation of the tower barrel is further affected.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the steel tower straight-bearing type reverse balance flange connection node which is simple in manufacturing process, convenient to construct, high in fatigue resistance level and high in bending resistance and the application thereof.
The aim of the invention can be achieved by the following technical scheme:
the reverse balance flange joint comprises an upper flange tower barrel and a lower flange tower barrel, wherein a tightening stiffening plate is welded on the inner wall of the upper flange tower barrel, a guiding stiffening plate is welded on the inner wall of the lower flange tower barrel, the upper surface of the tightening stiffening plate is connected with the upper flange plate through structural adhesive, the lower surface of the guiding stiffening plate is connected with the lower flange plate through structural adhesive, bolt holes are formed in the upper flange plate and the lower flange plate, and high-strength bolts penetrate through the upper flange plate and the lower flange plate through the bolt holes to connect the upper flange tower barrel and the lower flange tower barrel;
the device is characterized in that mounting holes are formed in the top tightening stiffening plate and the guide stiffening plate respectively, connecting rods which are clamped with the corresponding stiffening plate are arranged in the mounting holes respectively in the manufacturing, transporting and mounting processes of the reverse balance flange joint, and the two connecting rods are fixedly connected with annular auxiliary mechanisms arranged on the inner sides of the top tightening stiffening plate and the guide stiffening plate.
The invention eliminates the welding seam between the flange plate and the cylinder wall and between the stiffening plate and the flange plate, and further reduces the processing difficulty of the flange. And the bending rigidity in the flange plane in the manufacturing and transporting stages is increased by arranging the annular auxiliary mechanism, so that the deformation of the tower barrel is reduced.
The lower end face of the upper flange tower barrel, the lower surface of the upper flange plate, the upper surface of the jacking stiffening plate, the upper end face of the lower flange tower barrel, the lower surface of the guiding stiffening plate and the upper surface of the lower flange plate are all milled.
The auxiliary mechanism comprises a locking bolt connected with the connecting rod, steel pipe enclosing purlins arranged on the upper side and the lower side of the locking bolt and an arc-shaped pressing plate pressed on the surfaces of the two steel pipe enclosing purlins; the locking bolt passes through the circular arc-shaped pressing plate and is fixedly connected with the front nut.
The end part of the steel pipe enclosing purlin is welded with a steel inserting plate, a slotted hole is formed in the steel inserting plate, the axial directions of the two slotted holes at the splicing position are orthogonal, and the steel inserting plate is connected through an adjustable high-strength bolt.
The auxiliary mechanism further comprises a disposable transportation connecting piece with two ends respectively pressed on the upper front nut and the lower front nut and a rear nut pressed on the disposable transportation connecting piece; the locking bolt passes through the disposable transportation connecting piece and is tightly connected with the back nut.
The invention also comprises a roundness adjustment mechanism connected with the ends of the paired locking bolts positioned on the diameter of the tower.
The roundness adjusting mechanism comprises a large nut connected with the locking bolt, an ear plate connected with the large nut and a flexible pull rod connected with the ear plate.
The flexible pull rod is provided with a basket bolt for adjusting the tightness of the flexible pull rod.
The mounting holes on the jacking stiffening plate and the guiding stiffening plate are round pin holes, the connecting rod is a cylindrical pin, one end of the cylindrical pin is provided with a pin cap which is clamped with the corresponding stiffening plate, and the other end of the cylindrical pin is provided with a threaded hole which is in threaded connection with the locking bolt.
The invention also provides an application method of the reverse balance flange node, which comprises the following steps:
(a) Preparing an upper flange tower cylinder, a lower flange tower cylinder, a jacking stiffening plate, a guiding stiffening plate, an upper flange plate, a lower flange plate, a high-strength bolt, a cylindrical pin, a locking bolt, a steel pipe enclosing purlin, a pressing plate, a front nut, a disposable transportation connecting piece, a rear nut, a large nut and a flexible pull rod;
(b) The inner wall of the upper flange tower is welded with a top tightening stiffening plate, and the inner wall of the lower flange tower is welded with a guiding stiffening plate (4);
(c) The pin holes of the jacking stiffening plate and the guiding stiffening plate respectively penetrate through the cylindrical pins, the screw holes on the cylindrical pins are adjusted to horizontally face the center of the tower, and the locking bolts are screwed in;
(d) The inner sides of the top tightening stiffening plate and the guiding stiffening plate are tightly clung, the upper part and the lower part of the locking bolt are respectively provided with a pair of annular steel pipe enclosing purlins, and adjacent steel pipe enclosing purlins positioned at the same mounting height are connected through adjustable high-strength bolts;
(e) The locking bolt penetrates through the pressing plate to be connected with the front nut, and the front nut is screwed down to fix the steel pipe surrounding purlin;
(f) The method comprises the steps that paired locking bolts with parts positioned on the diameter of a tower barrel are uniformly selected in the circumferential direction, large nuts welded with lug plates are installed, the flexible pull rods are connected, and the tightness of the flexible pull rods is adjusted by rotating the basket bolts, so that the roundness of the upper flange tower barrel and the lower flange tower barrel is adjusted;
(g) The upper surface of the tightening stiffening plate is smeared with structural adhesive, and the upper flange plate is fixed; guiding the lower surface of the stiffening plate to be smeared with structural adhesive, and fixing the lower flange plate;
(h) The upper flange tower barrel is in butt joint with the lower flange tower barrel, the balance contact surface of the jacking stiffening plate is in butt joint with the guiding stiffening plate, high-strength bolts penetrate through the upper flange plate and the lower flange plate through bolt holes, part of the high-strength bolts are screwed, and the upper flange tower barrel is connected with the lower flange tower barrel;
(i) Dismantling the flexible pull rod and the large nut;
(j) Installing a disposable transportation connecting piece, and screwing a back nut;
(k) Installing a large nut again, connecting a flexible pull rod, and adjusting a basket bolt;
(l) Moving the counter balance flange node obtained in step (k) to an installation area;
(m) sequentially removing the flexible pull rod, the large nut, the rear nut, the disposable transportation connecting piece and the high-strength bolt;
(n) welding the upper flange tower barrel and the lower flange tower barrel with corresponding tower barrel bodies respectively;
(p) installing a large nut again, connecting a flexible pull rod and adjusting a basket bolt;
(q) moving to a tower installation area and hoisting;
(r) butt-jointing the upper flange tower barrel and the lower flange tower barrel, butt-jointing the balance contact surface of the jacking stiffening plate and the guiding stiffening plate, penetrating the upper flange plate and the lower flange plate through the bolt holes by high-strength bolts, and applying pretension;
and(s) sequentially removing the flexible pull rod, the large nut, the front nut, the pressing plate, the steel pipe enclosing purlin, the locking bolt and the cylindrical pin.
Preferably, when the upper flange tower cylinder, the jacking stiffening plate, the lower flange tower cylinder and the guiding stiffening plate are welded, the upper flange tower cylinder and the lower flange tower cylinder are limited by adopting a tower cylinder mould.
Compared with the prior art, the invention has the following advantages:
(1) The welding seam between the flange plate and the stiffening plate is omitted by adopting a milling and flat tightening method, the welding seam between the flange plate and the tower barrel is omitted by adopting a method for reinforcing the unidirectional bending resistance of the flange plate, the welding quantity is greatly reduced by adopting full penetration butt welding between the tower barrel and the stiffening plate, the welding seam is flat and regular, the mechanical flat welding is convenient, the welding quality is easy to ensure, and the fatigue resistance level of the tower barrel is improved;
(2) When the upper flange tower cylinder is welded with the jacking stiffening plate and the lower flange tower cylinder is welded with the guiding stiffening plate, the tower cylinder mould is used for limiting, and heating and heat preservation measures are adopted in the welding process, so that welding seam deformation is reduced;
(3) The rigidity of the flange in the manufacturing, transporting and installing processes is enhanced by the inner steel pipe enclosing purlin locked by the bolts, a plurality of opposite-pull flexible pull rods are arranged, the tightness of the pull rods is adjusted by the basket bolts, the roundness of the flange tower is further adjusted, and the flange tower is ensured not to deform in the process of being transported to a tower processing plant.
(4) The tightening surfaces between the flange plates and the stiffening plates can be connected by glue, and are tightly pressed by high-strength bolts to ensure tight gluing, the gluing strength can ensure the stress of the flange in the manufacturing, transporting and installing stages, and the glue joint is not effective after the tower barrel is hoisted in place and the high-strength bolts are tensioned.
(5) After the flange is transported to a tower processing plant, the flexible pull rod, the large nut, the rear nut, the disposable transportation connecting piece and the high-strength bolt are removed, the steel pipe enclosing purlin is reserved, and the rigidity of the flange can be maintained. The upper flange tower barrel and the lower flange tower barrel are respectively in butt welding with the upper tower barrel and the lower tower barrel, regional heating and heat preservation measures are adopted in the butt welding process, and the connection of the large nut and the flexible pull rod is restored after the welding is finished, so that the flange of the tower barrel is prevented from deforming in the transportation process.
(6) After the steel tower drum is installed, the temporary connecting pieces at construction stages such as the flexible pull rod, the large nut, the front nut, the pressing plate, the steel pipe enclosing purlin, the locking bolt, the cylindrical pin and the like are removed and can be recycled.
Drawings
FIG. 1 is a schematic view of the mounting structure of the present invention on a wind turbine tower;
FIG. 2 is a partial section A-A of FIG. 1;
FIG. 3 is a section B-B of FIG. 2;
FIG. 4 is a schematic view of the partial plan construction of the present invention during transportation;
FIG. 5 is a cross-sectional view of C-C of FIG. 4;
FIG. 6 is a section view D-D of FIG. 4;
FIG. 7 is a schematic diagram of the connection between the upper flange and the tower barrel during transportation;
FIG. 8 is a second schematic structural view of the connection of the upper flange of the present invention to the tower barrel during transportation;
FIG. 9 is a schematic diagram of the connection of the lower flange of the present invention to the tower barrel during transportation;
FIG. 10 is a schematic diagram II of the connection between the lower flange and the tower cylinder during transportation;
FIG. 11 is a schematic view of a splicing node structure of a steel pipe purlin;
in the figure, 1 is an upper flange tower barrel; 2 is a lower flange tower barrel; 3 is a top tightening stiffening plate; 4 is a guiding stiffening plate; 5 is an upper flange plate; 6 is a lower flange plate; 7 is a bolt hole; 8 is a high-strength bolt; 9 is a balance contact surface; 10 is a guiding incline; 11 is the stiffening plate gap; 12 is a tower barrel butt joint surface; 13 is a pin hole; 14 is a tower barrel; 15 is a cylindrical pin; 16 is a locking bolt; 17 is a steel pipe enclosing purlin; 18 is a press plate; 19 is a front nut; 20 is a one-time shipping connector; 21 is a rear nut; 22 is a large nut; 23 is an ear plate; 24 is a flexible pull rod; 25 is a basket bolt; 26 is a steel plugboard; 27 is a slotted hole; 28 is an adjustable high strength bolt.
Description of the embodiments
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
Examples
The reverse balance flange joint comprises an upper flange tower 1 and a lower flange tower 2, and the upper flange tower 1 and the lower flange tower 2 are welded on a tower barrel 14 as shown in figure 1. As shown in fig. 2 and 3, a tightening stiffening plate 3 is welded on the inner wall of the upper flange tower 1, a guiding stiffening plate 4 is welded on the inner wall of the lower flange tower 2, an upper flange plate 5 is connected to the upper surface of the tightening stiffening plate 3 through structural adhesive, a lower flange plate 6 is connected to the lower surface of the guiding stiffening plate 4 through structural adhesive, bolt holes 7 are formed in the upper flange plate 5 and the lower flange plate 6, and high-strength bolts 8 penetrate through the upper flange plate 5 and the lower flange plate 6 through the bolt holes 7 to connect the upper flange tower 1 with the lower flange tower 2; pin holes 13 are respectively arranged on the jacking stiffening plate 3 and the guiding stiffening plate 4. The lower surface of the jacking stiffening plate 3 is retracted into the upper flange tower 1, and a protruding balance contact surface 9 is arranged on one side far away from the upper flange tower 1; the guide stiffening plate 4 protrudes out of the lower flange tower 2, and a guide inclined plane 10 is arranged on one side close to the lower flange tower 2; the abutting stiffening plates 3 and the guiding stiffening plates 4 are abutted to form stiffening plate gaps 11. The butt joint surface of the upper flange tower 1 and the lower flange tower 2 is milled and flattened, and a tower barrel butt joint surface 12 is formed after butt joint; the abutting surface of the jacking stiffening plate 3 and the guiding stiffening plate 4 is milled flat, and a balance contact surface 9 is formed after abutting; the tower butt joint surface 12 and the balance contact surface 9 are not at the same height, and the position of the tower butt joint surface 12 is deviated to one side of the guide stiffening plate 4. The conicity of the upper flange tower 1 and the lower flange tower 2 is the same as the conicity of the connected tower cylinder 14. In the tower processing plant, the upper flange tower 1 and the lower flange tower 2 are welded with the corresponding tower cylinder 14 respectively to form a whole. In this embodiment, the lower end surface of the upper flange tower 1, the lower surface of the upper flange plate 5, the upper surface of the top tightening stiffening plate 3, the upper end surface of the lower flange tower 2, the lower surface of the guiding stiffening plate 4 and the upper surface of the lower flange plate 6 should be milled.
In the manufacturing, transporting and installing process, as shown in fig. 4 and 5, the pin holes 13 of the top tightening stiffening plate 3 and the guiding stiffening plate 4 respectively penetrate through the cylindrical pins 15, one end of each cylindrical pin 15 is provided with a pin cap, the other end is provided with a screw hole in a drilling mode and is internally threaded, the locking bolts 16 are screwed into the screw holes, the inner sides of the top tightening stiffening plate 3 and the guiding stiffening plate 4, the locking bolts 16 are provided with pairs of round steel pipe enclosing purlins 17 up and down, and the round steel pipe enclosing purlins are fixed through the round pressing plates 18 penetrating through the locking bolts 16 and the front nuts 19; in the process of transporting the balance flange connection node to a tower processing plant, the high-strength bolts 8 for connecting the upper flange plate 5 and the lower flange plate 6 are partially screwed; the upper and lower locking bolts 16 pass through the one-time shipping connector 20 at the same time and are fixed by tightening the rear nuts 21.
The reverse balance flange node further comprises a roundness adjusting mechanism connected with the locking bolts 16 in the process of installation and transportation, the paired locking bolts 16 with parts on the diameter of the tower tube are evenly selected in the process of manufacture, transportation and installation, the end parts are connected with large nuts 22, lug plates 23 are welded on the large nuts 22, the lug plates 23 are connected with flexible pull rods 24, the flexible pull rods 24 are provided with flower basket bolts 25, the tightness of the flexible pull rods 24 is adjusted through rotating the flower basket bolts 25, and then the roundness of the tower tube is adjusted.
In this embodiment, the steel pipe surrounding purlin 17 inside the stiffening plate may be split and formed by a plurality of sections, the end of each section of steel pipe surrounding purlin 17 is welded with a steel insert plate 26, the steel insert plate 26 is provided with a slotted hole 27, the two slotted holes 27 at the splicing position are orthogonal in direction, and are connected by an adjustable high-strength bolt 28, as shown in fig. 11.
The construction method of the application process of the steel tower barrel direct bearing type reverse balance flange connection node comprises the following specific steps:
a. respectively manufacturing an upper flange tower cylinder 1, a lower flange tower cylinder 2, a jacking stiffening plate 3, a guiding stiffening plate 4, an upper flange plate 5, a lower flange plate 6, high-strength bolts 8, cylindrical pins 15, locking bolts 16, steel pipe enclosing purlins 17, a pressing plate 18, a front nut 19, a disposable transportation connecting piece 20, a rear nut 21, a large nut 22 and a flexible pull rod 24 according to design requirements;
b. the inner wall of the upper flange tower 1 is welded with a jacking stiffening plate 3, and the inner wall of the lower flange tower 2 is welded with a guiding stiffening plate 4;
c. the pin holes 13 of the jacking stiffening plate 3 and the guiding stiffening plate 4 respectively penetrate through cylindrical pins 15, and screw holes on the cylindrical pins 15 horizontally face the center of the tower and are screwed into locking bolts 16;
d. tightly pressing the inner sides of the stiffening plate 3 and the guide stiffening plate 4, respectively arranging a pair of annular steel pipe enclosing purlins 17 up and down by the locking bolts 16, and connecting the steel pipe enclosing purlins 17 through adjustable high-strength bolts 28;
e. one end of a locking bolt 16 penetrates through a pressing plate 18, and then a front nut 19 is screwed down to fix the steel pipe enclosing purlin 17;
f. according to the requirement, uniformly selecting partial radial paired locking bolts 16 in a circumferential direction, installing large nuts 22, connecting flexible pull rods 24, and adjusting the tightness of the flexible pull rods 24 by rotating the turnbuckle 25 so as to adjust the roundness of the upper flange tower 1 and the lower flange tower 2; as shown in fig. 6, 7, 8, 9 and 10;
g. the upper surface of the tightening stiffening plate 3 is smeared with structural adhesive, and the upper flange plate 5 is fixed; the lower surface of the guide stiffening plate 4 is smeared with structural adhesive, and the lower flange plate 6 is fixed;
h. the upper flange tower 1 is in butt joint with the lower flange tower 2, the balance contact surface of the jacking stiffening plate 3 is in butt joint with the guiding stiffening plate 4, high-strength bolts 8 penetrate through the upper flange plate 5 and the lower flange plate 6 through bolt holes 7, part of the high-strength bolts 8 are screwed, and the upper flange tower 1 and the lower flange tower 2 are connected;
i. removing the flexible pull rod 24 and the large nut 22;
j. installing a disposable transport connector 20, and tightening a rear nut 21;
k. a large nut 22 is installed, a flexible pull rod 24 is connected, and a basket bolt 25 is adjusted;
l, transporting to a tower processing plant;
m, sequentially removing the flexible pull rod 24, the large nut 22, the rear nut 21, the disposable transportation connecting piece 20 and the high-strength bolt 8;
n, respectively welding the upper flange tower 1 and the lower flange tower 2 with corresponding tower cylinders 14;
p, reinstalling a large nut 22, connecting a flexible pull rod 24 and adjusting a basket bolt 25;
q, transporting to a wind field, and hoisting;
the upper flange tower 1 is in butt joint with the lower flange tower 2, the balance contact surface 9 of the jacking stiffening plate 3 is in butt joint with the guiding stiffening plate 4, and the high-strength bolts 8 penetrate through the upper flange plate 5 and the lower flange plate 6 through the bolt holes 7 and exert pretension;
s, sequentially removing the flexible pull rod 24, the large nut 22, the front nut 19, the pressing plate 18, the steel pipe enclosing purlin 17, the locking bolt 16 and the cylindrical pin 15.
Aiming at the problems of the prior steel tower connection technology, the embodiment provides a steel tower direct-bearing type reverse balance flange connection node and a construction method thereof, the welding seams between a flange plate and a cylinder wall and between a stiffening plate and the flange plate are canceled, only the butt welding between the tower and the stiffening plate is remained, the welding quantity is reduced, the processing difficulty of the flange is further reduced, and the fatigue resistance level of the tower is improved; the rigidity of the flange in the manufacturing and transportation processes is enhanced by the surrounding purlin of the inner steel pipe locked by the bolts, and a plurality of opposite-pull flexible pull rods are arranged, so that the flange tower can not deform in the transportation process; the steel pipe enclosing purlin and the like can be recycled.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the invention.
Claims (8)
1. The reverse balance flange joint comprises an upper flange tower cylinder (1) and a lower flange tower cylinder (2), wherein a tightening stiffening plate (3) is welded on the inner wall of the upper flange tower cylinder (1), a guiding stiffening plate (4) is welded on the inner wall of the lower flange tower cylinder (2),
the upper surface of the jacking stiffening plate (3) is connected with an upper flange plate (5) through structural adhesive, the lower surface of the guiding stiffening plate (4) is connected with a lower flange plate (6) through structural adhesive, bolt holes (7) are formed in the upper flange plate (5) and the lower flange plate (6), and high-strength bolts (8) penetrate through the upper flange plate (5) and the lower flange plate (6) through the bolt holes (7) to connect the upper flange tower drum (1) with the lower flange tower drum (2);
mounting holes are respectively formed in the jacking stiffening plate (3) and the guiding stiffening plate (4); in the manufacturing, transportation and installation processes of the reverse balance flange joint, connecting rods which are clamped with corresponding stiffening plates are respectively arranged in the mounting holes, and the two connecting rods are fixedly connected with annular auxiliary mechanisms which are arranged on the inner sides of the top tightening stiffening plate (3) and the guide stiffening plate (4);
the lower end face of the upper flange tower (1), the lower surface of the upper flange plate (5), the upper surface of the jacking stiffening plate (3), the upper end face of the lower flange tower (2), the lower surface of the guiding stiffening plate (4) and the upper surface of the lower flange plate (6) are all milled flat;
the annular auxiliary mechanism comprises a locking bolt (16) connected with the connecting rod, steel pipe enclosing purlins (17) arranged on the upper side and the lower side of the locking bolt (16) and arc-shaped pressing plates (18) pressed on the surfaces of the two steel pipe enclosing purlins (17); the locking bolt (16) passes through the circular arc-shaped pressing plate (18) and is fixedly connected with the front nut (19).
2. A counter balance flange joint according to claim 1, characterized in that the end of the steel pipe purlin (17) is welded with a steel insert plate (26), the steel insert plate (26) is provided with oblong holes (27), the axial directions of the two oblong holes (27) at the joint are orthogonal, and the two oblong holes are connected by an adjustable high-strength bolt (28).
3. A counter-balancing flange joint according to claim 1, characterized in that the annular auxiliary mechanism further comprises a disposable transport connection piece (20) with two ends respectively crimped onto the upper and lower front nuts (19) and a rear nut (21) crimped onto the disposable transport connection piece (20); the locking bolt (16) passes through the disposable transport connecting piece (20) and is tightly connected with the rear nut (21).
4. A counter balance flange joint according to claim 1, further comprising roundness adjustment means connected to the ends of pairs of locking bolts (16) located on the diameter of the tower.
5. A counter balance flange joint according to claim 4, characterized in that the roundness adjustment mechanism comprises a large nut (22) connected to the lock bolt (16), a lug plate (23) connected to the large nut (22), a flexible tie rod (24) connected to the lug plate (23).
6. A counter balance flange joint according to claim 5, characterized in that the flexible tie rod (24) is provided with a basket bolt (25) for adjusting the tightness of the flexible tie rod (24).
7. A counter balance flange joint according to claim 1, characterized in that the mounting holes on the tightening stiffening plate (3) and the guiding stiffening plate (4) are round pin holes (13), the connecting rod is a cylindrical pin (15), one end of the cylindrical pin is provided with a pin cap clamped with the corresponding stiffening plate, and the other end of the cylindrical pin is provided with a threaded hole in threaded connection with the locking bolt (16).
8. A method of using a reverse balanced flange node according to claim 1, comprising the steps of:
(a) Preparing an upper flange tower (1), a lower flange tower (2), a top tightening stiffening plate (3), a guiding stiffening plate (4), an upper flange plate (5), a lower flange plate (6), high-strength bolts (8), cylindrical pins (15), locking bolts (16), steel pipe enclosing purlins (17), pressing plates (18), front nuts (19), a disposable transportation connecting piece (20), rear nuts (21), large nuts (22) and flexible pull rods (24);
(b) A tightening stiffening plate (3) is welded on the inner wall of the upper flange tower (1), and a guiding stiffening plate (4) is welded on the inner wall of the lower flange tower (2);
(c) The pin holes (13) of the jacking stiffening plate (3) and the guiding stiffening plate (4) respectively penetrate through the cylindrical pins (15), and the screw holes on the cylindrical pins (15) are adjusted to horizontally face the center of the tower, and are screwed into the locking bolts (16);
(d) The inner sides of the top tightening stiffening plate (3) and the guiding stiffening plate (4) are tightly clung, the upper part and the lower part of the locking bolt (16) are respectively provided with a pair of annular steel pipe enclosing purlins (17), and adjacent steel pipe enclosing purlins (17) positioned at the same installation height are connected through an adjustable high-strength bolt (28);
(e) The locking bolt (16) passes through the pressing plate (18) to be connected with the front nut (19), and the front nut (19) is screwed down to fix the steel pipe surrounding purlin (17);
(f) The method comprises the steps that paired locking bolts (16) with parts on the diameter of a tower barrel are uniformly selected in the circumferential direction, large nuts (22) with lug plates (23) welded are installed, flexible pull rods (24) are connected, the tightness of the flexible pull rods (24) is adjusted through rotating the basket bolts (25), and therefore the roundness of an upper flange tower barrel (1) and a lower flange tower barrel (2) is adjusted;
(g) The upper surface of the tightening stiffening plate (3) is smeared with structural adhesive, and an upper flange plate (5) is fixed; the lower surface of the guide stiffening plate (4) is smeared with structural adhesive, and the lower flange plate (6) is fixed;
(h) The upper flange tower barrel (1) is in butt joint with the lower flange tower barrel (2), the balance contact surface of the jacking stiffening plate (3) is in butt joint with the guiding stiffening plate (4), the high-strength bolts (8) penetrate through the upper flange plate (5) and the lower flange plate (6) through bolt holes (7), part of the high-strength bolts (8) are screwed, and the upper flange tower barrel (1) is connected with the lower flange tower barrel (2);
(i) Removing the flexible pull rod (24) and the large nut (22);
(j) Installing a disposable transportation connecting piece (20), and screwing a rear nut (21);
(k) A large nut (22) is installed again, a flexible pull rod (24) is connected, and a basket bolt (25) is adjusted;
(l) Moving the counter balance flange node obtained in step (k) to an installation area;
(m) sequentially removing the flexible pull rod (24), the large nut (22), the rear nut (21), the disposable transportation connecting piece (20) and the high-strength bolt (8);
(n) respectively welding the upper flange tower barrel (1) and the lower flange tower barrel (2) with corresponding tower barrel bodies (14);
(p) installing a large nut (22) again, connecting a flexible pull rod (24) and adjusting a basket bolt (25);
(q) moving to a tower installation area and hoisting;
(r) butt-jointing the upper flange tower barrel (1) and the lower flange tower barrel (2), butt-jointing the balance contact surface (9) of the jacking stiffening plate (3) and the guiding stiffening plate (4), penetrating the upper flange plate (5) and the lower flange plate (6) through bolt holes (7) by high-strength bolts (8), and applying pretension;
and(s) sequentially removing the flexible pull rod (24), the large nut (22), the front nut (19), the pressing plate (18), the steel pipe enclosing purlin (17), the locking bolt (16) and the cylindrical pin (15).
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| CN201911032107.3A CN110671278B (en) | 2019-10-28 | 2019-10-28 | Reverse balance flange node and application method thereof |
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| CN201911032107.3A CN110671278B (en) | 2019-10-28 | 2019-10-28 | Reverse balance flange node and application method thereof |
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| CN110671278B true CN110671278B (en) | 2023-09-05 |
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| CN111691734B (en) * | 2020-05-08 | 2022-11-25 | 海南大学 | Assembled is from restoring to throne tower structure |
| CN111663837B (en) * | 2020-06-11 | 2022-01-04 | 乐风新能(北京)科技有限公司 | Reinforcing structure for junction of offshore wind power installation framework |
| EP3926164A1 (en) * | 2020-06-19 | 2021-12-22 | Vestas Offshore Wind A/S | Device and method for assembling wind turbine |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005075763A2 (en) * | 2004-02-04 | 2005-08-18 | Corus Staal Bv | Tower for a wind turbine, prefabricated metal wall part for use in a tower for a wind turbine and method for constructing a tower for a wind turbine |
| CN201027737Y (en) * | 2007-01-26 | 2008-02-27 | 国水投资集团包头风电科技有限公司 | Adapting flange |
| WO2008092350A1 (en) * | 2007-01-26 | 2008-08-07 | Baotou Wind Power Science & Technology Co., Ltd. Of China Water Investment Group | A flange assembly, a coupling flange and an assembly method thereof |
| CN201953757U (en) * | 2011-03-25 | 2011-08-31 | 国水投资集团包头风电科技有限公司 | Reversed balance flange reinforcing pull rod |
| DE102011001906A1 (en) * | 2011-04-08 | 2012-10-11 | Schuler Pressen Gmbh & Co. Kg | Load distribution element for armature assembly used for base of wind turbine, has several tabs which are projected away from inner side of flange portion to form raising unit that places component inside tower of wind turbine |
| WO2013068403A1 (en) * | 2011-11-08 | 2013-05-16 | Wobben Properties Gmbh | Foundation for a wind turbine |
| DE202013101312U1 (en) * | 2013-03-01 | 2013-05-16 | Hcp Innovation Aps | Set of fittings and fixing system for use in the handling and transport of tubular segments such as tower segments of wind turbines |
| CN205779496U (en) * | 2016-05-19 | 2016-12-07 | 江苏金海新能源科技有限公司 | A kind of tower reversed balancing flange |
| CN207278428U (en) * | 2017-10-24 | 2018-04-27 | 重庆国荣风能重工有限公司 | Wind-power tower structure |
| CN210829608U (en) * | 2019-10-28 | 2020-06-23 | 同济大学建筑设计研究院(集团)有限公司 | Reverse balance flange joint |
-
2019
- 2019-10-28 CN CN201911032107.3A patent/CN110671278B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005075763A2 (en) * | 2004-02-04 | 2005-08-18 | Corus Staal Bv | Tower for a wind turbine, prefabricated metal wall part for use in a tower for a wind turbine and method for constructing a tower for a wind turbine |
| CN201027737Y (en) * | 2007-01-26 | 2008-02-27 | 国水投资集团包头风电科技有限公司 | Adapting flange |
| WO2008092350A1 (en) * | 2007-01-26 | 2008-08-07 | Baotou Wind Power Science & Technology Co., Ltd. Of China Water Investment Group | A flange assembly, a coupling flange and an assembly method thereof |
| CN201953757U (en) * | 2011-03-25 | 2011-08-31 | 国水投资集团包头风电科技有限公司 | Reversed balance flange reinforcing pull rod |
| DE102011001906A1 (en) * | 2011-04-08 | 2012-10-11 | Schuler Pressen Gmbh & Co. Kg | Load distribution element for armature assembly used for base of wind turbine, has several tabs which are projected away from inner side of flange portion to form raising unit that places component inside tower of wind turbine |
| WO2013068403A1 (en) * | 2011-11-08 | 2013-05-16 | Wobben Properties Gmbh | Foundation for a wind turbine |
| DE202013101312U1 (en) * | 2013-03-01 | 2013-05-16 | Hcp Innovation Aps | Set of fittings and fixing system for use in the handling and transport of tubular segments such as tower segments of wind turbines |
| CN205779496U (en) * | 2016-05-19 | 2016-12-07 | 江苏金海新能源科技有限公司 | A kind of tower reversed balancing flange |
| CN207278428U (en) * | 2017-10-24 | 2018-04-27 | 重庆国荣风能重工有限公司 | Wind-power tower structure |
| CN210829608U (en) * | 2019-10-28 | 2020-06-23 | 同济大学建筑设计研究院(集团)有限公司 | Reverse balance flange joint |
Non-Patent Citations (1)
| Title |
|---|
| 反向平衡法兰有限元分析;马人乐;黄冬平;吕兆华;;特种结构(第01期);全文 * |
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