CN110671278A - Reverse balance flange joint and application thereof - Google Patents
Reverse balance flange joint and application thereof Download PDFInfo
- Publication number
- CN110671278A CN110671278A CN201911032107.3A CN201911032107A CN110671278A CN 110671278 A CN110671278 A CN 110671278A CN 201911032107 A CN201911032107 A CN 201911032107A CN 110671278 A CN110671278 A CN 110671278A
- Authority
- CN
- China
- Prior art keywords
- plate
- flange
- stiffening plate
- tower
- upper flange
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to a reverse balance flange node which comprises an upper flange tower cylinder and a lower flange tower cylinder, wherein a jacking stiffening plate is welded on the inner wall of the upper flange tower cylinder, a guiding stiffening plate is welded on the inner wall of the lower flange tower cylinder, the upper surface of the jacking 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 arranged on the upper flange plate and the lower flange plate, and a high-strength bolt penetrates through the upper flange plate and the lower flange plate through the bolt holes to connect the upper flange tower cylinder and the lower flange tower cylinder; the jacking stiffening plate and the guiding stiffening plate are respectively provided with a mounting hole, the mounting holes are respectively internally provided with a connecting rod which is clamped with the corresponding stiffening plate, and the two connecting rods are fixedly connected with the annular auxiliary mechanisms arranged at the inner sides of the jacking stiffening plate and the guiding stiffening plate. Compared with the prior art, the invention has the advantages of less welding amount, simple processing technology, high anti-fatigue grade of the tower drum, no deformation of the tower drum during transportation and the like.
Description
Technical Field
The invention belongs to the technical field of connection of steel tower barrels of wind power generation tower structures in structural engineering, and particularly relates to a steel tower barrel direct-bearing type reverse balance flange connection node 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 for guaranteeing the normal operation of the wind driven generator.
The flange plate of the traditional forged flange has larger thickness, the end face of the whole flange plate is milled flat, the workload is large, the flange plate is difficult to process, the manufacturing cost is high, and the connecting bolt is easy to loosen under the action of fatigue load; the existing reverse balance flanges (ZL200920291676.5, ZL201120088100.6 and ZL201620467194.0) comprise flange plates arranged in a reverse mode and balance faces formed by stiffening plates arranged in the centripetal mode on the inner side of a tower drum, steel consumption of the flanges is low, rigidity is high, processing difficulty and manufacturing cost are reduced, bolts are lengthened through the increased stiffening plates, bolt pretensioning force can be applied accurately, and anti-loosening performance of the bolts is improved. However, the existing reverse balance flange has more welding seams, including a plurality of welding seams of the flange plate and the cylinder wall, the stiffening plate and the flange plate, and the stiffening plate and the cylinder wall, the welding workload of a factory 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 only depends on the counter-pulling flexible pull rod in the transportation process, the bending rigidity is insufficient, deformation is easy to occur, the roundness deviation of the tower barrel is large, and the installation of the tower barrel is influenced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a direct-bearing type reverse balance flange connecting node of a steel tower cylinder, which has the advantages of simple manufacturing process, convenience in construction, high anti-fatigue grade of the tower cylinder and strong bending resistance, and an application thereof.
The purpose of the invention can be realized by the following technical scheme:
a reverse balance flange node comprises an upper flange tower drum and a lower flange tower drum, wherein a jacking stiffening plate is welded on the inner wall of the upper flange tower drum, a guiding stiffening plate is welded on the inner wall of the lower flange tower drum, the upper surface of the jacking stiffening plate is connected with an upper flange plate through structural adhesive, the lower surface of the guiding stiffening plate is connected with a lower flange plate through structural adhesive, bolt holes are formed in the upper flange plate and the lower flange plate, and a high-strength bolt penetrates through the upper flange plate and the lower flange plate through the bolt holes to connect the upper flange tower drum and the lower flange tower drum;
the top tightening stiffening plate and the guide stiffening plate are respectively provided with a mounting hole, connecting rods clamped with the corresponding stiffening plates are respectively arranged in the mounting holes in the manufacturing, transporting and mounting processes of the reverse balance flange nodes, 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 cancels the welding seams 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, and the deformation of the tower barrel is reduced.
And the lower end face of the upper flange tower cylinder, 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 cylinder, the lower surface of the guide stiffening plate and the upper surface of the lower flange plate are milled flat.
The auxiliary mechanism comprises a locking bolt connected with the connecting rod, circular enclosing purlins arranged on the upper side and the lower side of the locking bolt and arc-shaped pressing plates pressed on the surfaces of the two circular enclosing purlins; the locking bolt penetrates through the arc-shaped pressing plate and is fixedly connected with the front nut.
The end part of the circular purlin is welded with a steel inserting plate, the steel inserting plate is provided with long round holes, and the two long round holes at the splicing part are orthogonal in the axial direction and are connected through adjustable high-strength bolts.
The auxiliary mechanism further comprises a primary transportation connecting piece and a rear nut, wherein two ends of the primary transportation connecting piece are respectively in compression joint with the upper front nut and the lower front nut, and the rear nut is in compression joint with the primary transportation connecting piece; the locking bolt penetrates through the primary transportation connecting piece to be tightly connected with the rear nut.
The invention also comprises a roundness adjusting mechanism which is connected with the end parts of the paired locking bolts on the diameter of the tower barrel.
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 turn buckle for adjusting the tightness of the flexible pull rod.
The installation holes in the jacking stiffening plate and the guide 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 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.
The invention also provides an application method of the reverse balance flange joint, which comprises the following steps:
(a) preparing an upper flange tower barrel, a lower flange tower barrel, a jacking stiffening plate, a guide stiffening plate, an upper flange plate, a lower flange plate, a high-strength bolt, a cylindrical pin, a locking bolt, a steel pipe purlin, a pressing plate, a front nut, a primary transportation connecting piece, a rear nut, a large nut and a flexible pull rod;
(b) the inner wall of the upper flange tower cylinder is welded with a tightening stiffening plate, and the inner wall of the lower flange tower cylinder is welded with a guide stiffening plate (4);
(c) the pin holes of the jacking stiffening plate and the guide stiffening plate respectively penetrate through the cylindrical pin, the screw hole on the cylindrical pin is adjusted to horizontally face the center of the tower barrel, and a locking bolt is screwed in;
(d) tightly clinging to the inner sides of the abutting stiffening plates and the guiding stiffening plates, respectively arranging paired circular steel pipe purlins at the upper and lower parts of the locking bolts, and connecting adjacent steel pipe purlins at the same installation height 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 following steps of (1) annularly and uniformly selecting paired locking bolts of which the parts are positioned on the diameter of a tower cylinder, installing large nuts welded with lug plates, connecting flexible pull rods, and adjusting the tightness of the flexible pull rods by rotating turn bolts so as to adjust the roundness of an upper flange tower cylinder and a lower flange tower cylinder;
(g) coating structural adhesive on the upper surface of the tightly-propping stiffening plate, and fixing the upper flange plate; coating structural adhesive on the lower surface of the stiffening plate, and fixing the lower flange plate;
(h) butting an upper flange tower cylinder and a lower flange tower cylinder, butting a balance contact surface of a jacking stiffening plate and a guide stiffening plate, penetrating high-strength bolts through an upper flange plate and a lower flange plate through bolt holes, screwing partial high-strength bolts, and connecting the upper flange tower cylinder and the lower flange tower cylinder;
(i) removing the flexible pull rod and the large nut;
(j) installing a disposable transportation connecting piece, and screwing a rear nut;
(k) mounting the large nut again, connecting the flexible pull rod and adjusting the turn buckle;
(l) Moving the counter-balanced flange node obtained in step (k) to an installation area;
(m) sequentially removing the flexible pull rod, the large nut, the rear nut, the one-time transportation connecting piece and the high-strength bolt;
(n) respectively welding the upper flange tower cylinder and the lower flange tower cylinder with the corresponding tower cylinder bodies;
(p) mounting the large nut again, connecting the flexible pull rod and adjusting the turn buckle;
(q) moving to a tower barrel installation area, and hoisting;
(r) butting the upper flange tower cylinder with the lower flange tower cylinder, butting the balance contact surface of the jacking stiffening plate with the guide stiffening plate, penetrating a high-strength bolt through the upper flange plate and the lower flange plate through a bolt hole, and applying pretension;
(s) sequentially detaching 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 drum and the jacking stiffening plate, the lower flange tower drum and the guide stiffening plate are welded, the upper flange tower drum and the lower flange tower drum are limited by a tower drum mold.
Compared with the prior art, the invention has the following advantages:
(1) according to the invention, the welding seam between the flange plate and the stiffening plate is omitted by using a method of milling flat and jacking, the welding seam between the flange plate and the tower drum is omitted by using a method of reinforcing the unidirectional bending resistance of the flange plate, and only the tower drum and the stiffening plate are subjected to full penetration butt welding, so that the welding amount is greatly reduced, the welding seam is straight and regular, the mechanical flat welding is convenient, the welding quality is easy to guarantee, and the anti-fatigue grade of the tower drum is improved;
(2) when the upper flange tower tube and the jacking stiffening plate as well as the lower flange tower tube and the guide stiffening plate are welded, the upper flange tower tube and the lower flange tower tube are limited by a tower tube mold, and the welding process adopts a heating and heat-preserving measure to reduce the deformation of welding seams;
(3) according to the invention, the rigidity of the flange is enhanced by using the steel pipe enclosing purlin on the inner side locked by the bolts in the manufacturing, transporting and installing processes, the plurality of counter-pulling flexible pull rods are arranged, the tightness of the pull rods is adjusted by using the turn buckle bolts, the roundness of the flange tower barrel is further adjusted, and the flange tower barrel is ensured not to deform in the transporting process to a tower barrel processing plant.
(4) The tight-pushing surfaces between the flange plates and the stiffening plates can be connected by glue and are compressed by high-strength bolts to ensure tight glue joint, the glue joint strength can ensure the stress of the flange in the manufacturing, transporting and installing stages, and the glue joint does not play a role after the tower barrel is hoisted in place and the high-strength bolts are tensioned.
(5) After the flange is transported to a tower barrel processing factory, the flexible pull rod, the large nut, the rear nut, the one-time 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 still maintained. The upper flange tower barrel and the lower flange tower barrel are respectively butt-welded with the upper tower barrel and the lower tower barrel, regional heating and heat preservation measures are adopted in the butt-joint process, and the large nuts and the flexible pull rods are restored to be connected after welding is completed, so that the flange of the tower barrel is prevented from deforming in the transportation process.
(6) After the steel tower cylinder direct-bearing type reverse balance flange is installed on a construction site tower cylinder, temporary connecting pieces in construction stages such as the flexible pull rod, the large nut, the front nut, the pressing plate, the steel pipe surrounding purlin, the locking bolt and the cylindrical pin are detached and can be recycled and reused.
Drawings
FIG. 1 is a schematic view of the installation structure of the present invention on a tower of a wind turbine;
FIG. 2 is a partial A-A cross-sectional view of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 4 is a schematic view of a partial plan view of the present invention in transport;
FIG. 5 is a cross-sectional view taken along line C-C of FIG. 4;
FIG. 6 is a cross-sectional view taken along line D-D of FIG. 4;
FIG. 7 is a first schematic structural view of the upper flange and tower barrel connection of the present invention during transportation;
FIG. 8 is a second schematic structural view of the connection of the upper flange and the tower barrel of the present invention during transportation;
FIG. 9 is a first schematic structural view of the lower flange and tower barrel connection of the present invention during transportation;
FIG. 10 is a second schematic structural view of the connection of the lower flange and the tower barrel of the present invention during transportation;
FIG. 11 is a schematic structural view of a steel pipe purlin splicing joint;
in the figure, 1 is an upper flange tower barrel; 2 is a lower flange tower drum; 3, a jacking stiffening plate; 4 is a guide 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 guide inclined plane; 11 is a stiffening plate gap; 12 is a tower barrel butt joint surface; 13 is a pin hole; 14 is a tower cylinder body; 15 is a cylindrical pin; 16 is a locking bolt; 17 is a steel pipe surrounding purlin; 18 is a pressing plate; 19 is a front nut; 20 is a primary transport 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 turn buckle; 26 is a steel inserting plate; 27 is a long round hole; and 28, an adjustable high-strength bolt.
Detailed Description
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 invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Examples
A reverse balance flange joint is shown in figure 1 and comprises an upper flange tower 1 and a lower flange tower 2, wherein the upper flange tower 1 and the lower flange tower 2 are welded on a tower barrel 14. As shown in fig. 2 and 3, a top stiffening plate 3 is welded on the inner wall of an upper flange tower tube 1, a guide stiffening plate 4 is welded on the inner wall of a lower flange tower tube 2, the upper surface of the top stiffening plate 3 is connected with an upper flange plate 5 through structural adhesive, the lower surface of the guide stiffening plate 4 is connected with a lower flange plate 6 through structural adhesive, bolt holes 7 are arranged on 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 tube 1 and the lower flange tower tube 2; the top tightening stiffening plate 3 and the guide stiffening plate 4 are respectively provided with a pin hole 13. The lower surface of the jacking stiffening plate 3 retracts into the upper flange tower barrel 1, and a protruding balance contact surface 9 is arranged on one side far away from the upper flange tower barrel 1; the guide stiffening plate 4 protrudes out of the lower flange tower barrel 2, and a guide inclined plane 10 is arranged at one side close to the lower flange tower barrel 2; the abutting strengthening plate 3 and the guide strengthening plate 4 are butted to form a strengthening plate gap 11. The butt joint surface of the upper flange tower barrel 1 and the lower flange tower barrel 2 is milled flat, and a tower barrel butt joint surface 12 is formed after butt joint; the abutting surfaces of the jacking stiffening plate 3 and the guide stiffening plate 4 are milled flat, and a balance contact surface 9 is formed after abutting; the tower abutting surface 12 is not at the same height with the balance contact surface 9, and the position of the tower abutting 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 that of the connected tower barrel 14. In a tower processing plant, the upper flange tower 1 and the lower flange tower 2 are respectively welded with the corresponding tower barrels 14 into a whole. In this embodiment, the lower end surface of the upper flange tower tube 1, the lower surface of the upper flange plate 5, the upper surface of the tightening stiffening plate 3, the upper end surface of the lower flange tower tube 2, the lower surface of the guide stiffening plate 4, and the upper surface of the lower flange plate 6 should be milled flat.
In the manufacturing, transporting and installing processes, as shown in fig. 4 and 5, pin holes 13 of the jacking stiffening plate 3 and the guiding stiffening plate 4 respectively penetrate through a cylindrical pin 15, one end of the cylindrical pin 15 is provided with a pin cap, the other end of the cylindrical pin is provided with a screw hole and is turned with an internal thread, a locking bolt 16 is screwed into the screw hole, paired circular steel pipe purlins 17 are arranged on the inner sides of the jacking stiffening plate 3 and the guiding stiffening plate 4 and on the upper part and the lower part of the locking bolt 16, and are fixed through an arc-shaped pressing plate 18 penetrating through the locking bolt 16 and a front nut 19; during the transportation of the constant flange connecting node to a tower barrel processing plant, the high-strength bolts 8 connecting the upper flange plate 5 and the lower flange plate 6 are partially screwed down; the upper and lower lock bolts 16 are simultaneously passed through the primary transport connection 20 and fixed by tightening the rear nuts 21.
This reverse balance flange node is still including the installation, the circularity guiding mechanism who is connected with locking bolt 16 in the transportation, in preparation, transportation and installation, evenly select the part to be located the locking bolt 16 in pairs on the tower section of thick bamboo diameter, end connection big nut 22, the welding has otic placode 23 on the big nut 22, otic placode 23 is connected with flexible pull rod 24, be equipped with basket of flowers bolt 25 on the flexible pull rod 24, adjust the elasticity of flexible pull rod 24 through rotatory basket of flowers bolt 25, and then the circularity of adjustment tower section of thick bamboo.
In this embodiment, the steel pipe purlin 17 inside the stiffener may be formed by a plurality of split sections, a steel inserting plate 26 is welded to the end of each steel pipe purlin 17, a long circular hole 27 is formed in each steel inserting plate 26, the two long circular holes 27 at the splicing position are orthogonal in direction, and are connected through an adjustable high-strength bolt 28, as shown in fig. 11.
The construction method for the application process of the steel tower cylinder direct-bearing type reverse balance flange connection node comprises the following specific steps:
a. respectively manufacturing an upper flange tower barrel 1, a lower flange tower barrel 2, a jacking stiffening plate 3, a guide stiffening plate 4, an upper flange plate 5, a lower flange plate 6, a high-strength bolt 8, a cylindrical pin 15, a locking bolt 16, a steel pipe purlin 17, a pressing plate 18, a front nut 19, a primary 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 barrel 1 is welded with a tightening stiffening plate 3, and the inner wall of the lower flange tower barrel 2 is welded with a guide stiffening plate 4;
c. the pin holes 13 of the jacking stiffening plate 3 and the guide stiffening plate 4 respectively penetrate through the cylindrical pin 15, and a screw hole on the cylindrical pin 15 horizontally faces to the center of the tower barrel and is screwed into a locking bolt 16;
d. tightly clinging to the inner sides of the abutting stiffening plates 3 and the guiding stiffening plates 4, respectively arranging paired circular steel pipe purlins 17 at the upper and lower parts of the locking bolts 16, and connecting the circular steel pipe purlins 17 through adjustable high-strength bolts 28;
e. one end of a locking bolt 16 penetrates through the pressure plate 18, and then a front nut 19 is screwed down to fix the steel pipe surrounding purlin 17;
f. according to the requirement, part of radial paired locking bolts 16 are circumferentially and uniformly selected, large nuts 22 are installed, flexible pull rods 24 are connected, the tightness of the flexible pull rods 24 is adjusted by rotating the turn buckle 25, and further the roundness of the upper flange tower barrel 1 and the lower flange tower barrel 2 is adjusted; as shown in fig. 6, 7, 8, 9 and 10;
g. coating structural adhesive on the upper surface of the top-tightening stiffening plate 3, and fixing an upper flange plate 5; coating structural adhesive on the lower surface of the stiffening plate 4 and fixing the lower flange plate 6;
h. butting an upper flange tower barrel 1 and a lower flange tower barrel 2, butting a balance contact surface of a jacking stiffening plate 3 and a guide stiffening plate 4, penetrating a high-strength bolt 8 through an upper flange plate 5 and a lower flange plate 6 through a bolt hole 7, screwing partial high-strength bolts 8, and connecting the upper flange tower barrel 1 and the lower flange tower barrel 2;
i. the flexible pull rod 24 and the large nut 22 are removed;
j. installing a disposable transport connector 20, and screwing a rear nut 21;
k. then a big nut 22 is installed, a flexible pull rod 24 is connected, and a turn buckle 25 is adjusted;
l, transporting to a tower barrel 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 barrel 1 and the lower flange tower barrel 2 with the corresponding tower barrel bodies 14;
p, mounting the large nut 22 again, connecting the flexible pull rod 24 and adjusting the turn buckle 25;
q, transporting to a wind field and hoisting;
r, butting the upper flange tower barrel 1 with the lower flange tower barrel 2, butting a balance contact surface 9 of the jacking stiffening plate 3 with the guide stiffening plate 4, penetrating a high-strength bolt 8 through the upper flange plate 5 and the lower flange plate 6 through a bolt hole 7, and applying pretension;
and s, sequentially detaching the flexible pull rod 24, the large nut 22, the front nut 19, the pressing plate 18, the steel pipe purlin 17, the locking bolt 16 and the cylindrical pin 15.
Aiming at the problems in the existing steel tower tube connection technology, the embodiment provides a steel tower tube direct-bearing type reverse balance flange connection node and a construction method thereof, wherein welding seams between a flange plate and a tube wall and between a stiffening plate and the flange plate are eliminated, only butt welding between a tower tube and the stiffening plate is reserved, the welding amount is reduced, the processing difficulty of the flange is further reduced, and the anti-fatigue grade of the tower tube is improved; the rigidity of the flange is enhanced by using the inner steel pipe enclosing purlin locked by the bolts in the manufacturing and transporting processes, and a plurality of counter-pulling flexible pull rods are arranged to ensure that a flange tower barrel cannot deform in the transporting process; the steel pipe surrounding purlin and the like can be recycled and reused.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (10)
1. A reverse balance flange joint comprises an upper flange tower drum (1) and a lower flange tower drum (2), wherein the inner wall of the upper flange tower drum (1) is welded with a jacking stiffening plate (3), the inner wall of the lower flange tower drum (2) is welded with a guiding stiffening plate (4),
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 guide 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) and the lower flange tower drum (2);
the jacking stiffening plate (3) and the guide stiffening plate (4) are respectively provided with a mounting hole; in the processes of manufacturing, transporting and installing reverse balance flange nodes, connecting rods clamped with the corresponding stiffening plates are respectively arranged in the installing holes, and the two connecting rods are fixedly connected with annular auxiliary mechanisms arranged on the inner sides of the jacking stiffening plates (3) and the guide stiffening plates (4).
2. The counter-balanced flange joint of claim 1, characterized in that the lower end surface of the upper flange tower (1), the lower surface of the upper flange plate (5), the upper surface of the tightening stiffening plate (3), the upper end surface of the lower flange tower (2), the lower surface of the guide stiffening plate (4) and the upper surface of the lower flange plate (6) are milled flat.
3. The reverse balance flange joint according to claim 1, wherein the auxiliary mechanism comprises a locking bolt (16) connected with the connecting rod, circular enclosing purlins (17) arranged on the upper side and the lower side of the locking bolt (16), and circular arc-shaped pressing plates (18) pressed on the surfaces of the two circular enclosing purlins (17); the locking bolt (16) penetrates through the arc-shaped pressing plate (18) and the front nut (19) to be fixedly connected.
4. A counter balance flange joint according to claim 3, characterized in that the circular purlin (17) has steel insertion plates (26) welded to the ends thereof, the steel insertion plates (26) are provided with oblong holes (27), and the two oblong holes (27) at the joint are orthogonal in axial direction and connected by means of adjustable high-strength bolts (28).
5. A counter balance flange joint as claimed in claim 3 wherein said auxiliary means further comprises a primary transport connector (20) having two ends respectively crimped to the upper and lower front nuts (19) and a rear nut (21) crimped to said primary transport connector (20); the locking bolt (16) penetrates through the primary transportation connecting piece (20) to be tightly connected with the rear nut (21).
6. A counter balance flange joint as claimed in claim 3, further comprising roundness adjustment means connected to the ends of the pairs of locking bolts (16) on the diameter of the tower.
7. A counter balance flange joint according to claim 6, characterized in that the roundness adjusting mechanism comprises a large nut (22) connected with the lock bolt (16), an ear plate (23) connected with the large nut (22), and a flexible tie rod (24) connected with the ear plate (23).
8. A counter balance flange joint according to claim 7, characterized in that said flexible tie rods (24) are provided with turn-key bolts (25) for adjusting the tightness of said flexible tie rods (24).
9. A counter balance flange joint according to claim 3, characterized in that the mounting holes of the top tightening stiffening plate (3) and the guide stiffening plate (4) are round pin holes (13), the connecting rod is a cylindrical pin (15) with a pin cap at one end for clamping with the corresponding stiffening plate and a threaded hole at the other end for screwing with the locking bolt (16).
10. A method of using a counter balanced flange joint as claimed in claim 1, comprising the steps of:
(a) preparing an upper flange tower barrel (1), a lower flange tower barrel (2), a jacking stiffening plate (3), a guide stiffening plate (4), an upper flange plate (5), a lower flange plate (6), a high-strength bolt (8), a cylindrical pin (15), a locking bolt (16), a steel pipe enclosing purlin (17), a pressing plate (18), a front nut (19), a primary transport connecting piece (20), a rear nut (21), a large nut (22) and a flexible pull rod (24);
(b) a jacking stiffening plate (3) is welded on the inner wall of the upper flange tower tube (1), and a guiding stiffening plate (4) is welded on the inner wall of the lower flange tower tube (2);
(c) the pin holes (13) of the jacking stiffening plate (3) and the guide stiffening plate (4) respectively penetrate through the cylindrical pin (15), the screw hole on the cylindrical pin (15) is adjusted to horizontally face the center of the tower, and a locking bolt (16) is screwed in;
(d) tightly clinging to the inner sides of the top stiffening plate (3) and the guide stiffening plate (4), respectively arranging paired circular steel pipe enclosing purlins (17) at the upper part and the lower part of a locking bolt (16), and connecting adjacent steel pipe enclosing purlins (17) at the same installation height through adjustable high-strength bolts (28);
(e) the locking bolt (16) penetrates through the pressure 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 following steps of circumferentially and uniformly selecting paired locking bolts (16) with parts located on the diameter of a tower cylinder, installing large nuts (22) welded with lug plates (23), connecting flexible pull rods (24), and adjusting the tightness of the flexible pull rods (24) by rotating turn bolts (25), so that the roundness of an upper flange tower cylinder (1) and a lower flange tower cylinder (2) is adjusted;
(g) coating structural adhesive on the upper surface of the top-tightening stiffening plate (3) and fixing an upper flange plate (5); the lower surface of the stiffening plate (4) is led to be coated with structural adhesive, and a lower flange plate (6) is fixed;
(h) butting an upper flange tower drum (1) with a lower flange tower drum (2), butting a balance contact surface of a jacking stiffening plate (3) with a guide stiffening plate (4), penetrating high-strength bolts (8) through an upper flange plate (5) and a lower flange plate (6) through bolt holes (7), screwing partial high-strength bolts (8), and connecting the upper flange tower drum (1) with the lower flange tower drum (2);
(i) the flexible pull rod (24) and the large nut (22) are removed;
(j) mounting a disposable transport connector (20), and screwing down a rear nut (21);
(k) mounting a large nut (22) again, connecting a flexible pull rod (24) and adjusting a turn buckle (25);
(l) Moving the counter-balanced flange node obtained in step (k) to an installation area;
(m) sequentially detaching 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 the corresponding tower barrel bodies (14);
(p) mounting a large nut (22) again, connecting a flexible pull rod (24) and adjusting a turn buckle (25);
(q) moving to a tower barrel installation area, and hoisting;
(r) butting the upper flange tower drum (1) with the lower flange tower drum (2), butting a balance contact surface (9) of the jacking stiffening plate (3) with the guide stiffening plate (4), penetrating a high-strength bolt (8) through the upper flange plate (5) and the lower flange plate (6) through a bolt hole (7), and applying pretension;
(s) sequentially detaching the flexible pull rod (24), the large nut (22), the front nut (19), the pressing plate (18), the steel pipe surrounding purlin (17), the locking bolt (16) and the cylindrical pin (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911032107.3A CN110671278B (en) | 2019-10-28 | 2019-10-28 | Reverse balance flange node and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911032107.3A CN110671278B (en) | 2019-10-28 | 2019-10-28 | Reverse balance flange node and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110671278A true CN110671278A (en) | 2020-01-10 |
| CN110671278B CN110671278B (en) | 2023-09-05 |
Family
ID=69084641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911032107.3A Active CN110671278B (en) | 2019-10-28 | 2019-10-28 | Reverse balance flange node and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110671278B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111663837A (en) * | 2020-06-11 | 2020-09-15 | 陈如请 | Reinforcing structure for junction of offshore wind power installation framework |
| CN111691734A (en) * | 2020-05-08 | 2020-09-22 | 海南大学 | Assembled self-resetting tower type structure |
| EP3926164A1 (en) * | 2020-06-19 | 2021-12-22 | Vestas Offshore Wind A/S | Device and method for assembling wind turbine |
| CN114962163A (en) * | 2022-06-21 | 2022-08-30 | 福建工程学院 | Quick centering wind power tower cylinder connection structure |
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 |
| 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 |
| WO2013068403A1 (en) * | 2011-11-08 | 2013-05-16 | Wobben Properties Gmbh | Foundation for a wind turbine |
| 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 (2)
| Title |
|---|
| 马人乐;刘恺;黄冬平;: "反向平衡法兰试验研究", 同济大学学报(自然科学版), no. 10 * |
| 马人乐;黄冬平;吕兆华;: "反向平衡法兰有限元分析", 特种结构, no. 01 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111691734A (en) * | 2020-05-08 | 2020-09-22 | 海南大学 | Assembled self-resetting tower type structure |
| CN111663837A (en) * | 2020-06-11 | 2020-09-15 | 陈如请 | Reinforcing structure for junction of offshore wind power installation framework |
| 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 |
| EP4168190A4 (en) * | 2020-06-19 | 2024-07-24 | Vestas Wind Sys As | Device and method for assembling wind turbine |
| CN114962163A (en) * | 2022-06-21 | 2022-08-30 | 福建工程学院 | Quick centering wind power tower cylinder connection structure |
| CN114962163B (en) * | 2022-06-21 | 2024-05-24 | 福建工程学院 | Quick centering wind power tower tube connection structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110671278B (en) | 2023-09-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110671278A (en) | Reverse balance flange joint and application thereof | |
| WO2008092350A1 (en) | A flange assembly, a coupling flange and an assembly method thereof | |
| CN107419809A (en) | A kind of assembled architecture connector | |
| CN104652422B (en) | For the device and method of pile foundation steel bar cage bar connecting | |
| CN111745316A (en) | Rapid positioning and correcting method for butt joint of steel pipes | |
| JP2001003459A (en) | Pipe joint for structural body | |
| CN210829608U (en) | Reverse balance flange joint | |
| CN113529979A (en) | Exempt from welded rack node reinforced structure | |
| CN110671279B (en) | Reverse balance flange connection node and manufacturing method and application thereof | |
| CN111878490A (en) | Thread connection-free three-way connection structure | |
| CN211525000U (en) | Reverse balance flange connection node | |
| CN106917507A (en) | A kind of high strength alumin ium alloy support system | |
| CN215715990U (en) | C-shaped steel portable butt joint piece | |
| CN113478436B (en) | Large-diameter large-pitch thread tightening device and manufacturing method thereof | |
| CN102678694B (en) | Flange-free connection mode and implementation method for barrel-type tower frame of large size wind turbine | |
| CN213318665U (en) | Quick positioning and correcting device for butt joint of steel pipe | |
| CN211473089U (en) | Composite straight thread sleeve | |
| CN113846751B (en) | Connecting device for circular steel tube with large-span space structure and manufacturing method | |
| JP4134459B2 (en) | Pipe fittings for structures | |
| JP2001271421A (en) | Fixing part and bolt part used to join steel pipe column | |
| CN220667717U (en) | Split type pylon and wind generating set | |
| RU222354U1 (en) | Device for centering pipeline sections | |
| CN221441740U (en) | Assembled rigid connection structure of H girder steel and steel tubular column | |
| CN221791604U (en) | Pipeline welding is to mouthful device convenient to operation | |
| CN219491333U (en) | One-way bolted connection node of steel pipe column wall welding sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |