CN116352219B - Water-drop type tower barrel assembly and water-drop type tower barrel construction method - Google Patents
Water-drop type tower barrel assembly and water-drop type tower barrel construction method Download PDFInfo
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- CN116352219B CN116352219B CN202310495106.2A CN202310495106A CN116352219B CN 116352219 B CN116352219 B CN 116352219B CN 202310495106 A CN202310495106 A CN 202310495106A CN 116352219 B CN116352219 B CN 116352219B
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- 238000010276 construction Methods 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 135
- 239000010959 steel Substances 0.000 claims abstract description 135
- 238000003466 welding Methods 0.000 claims abstract description 104
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 5
- 239000002932 luster Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
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- 241000736911 Turritella communis Species 0.000 abstract 1
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- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
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- 239000011425 bamboo Substances 0.000 description 2
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- 238000007689 inspection Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910001361 White metal Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
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- 239000010969 white metal Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/013—Arc cutting, gouging, scarfing or desurfacing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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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
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Abstract
The invention belongs to the technical field of welding of special-shaped barrel components, and particularly discloses a water-drop type tower barrel and a construction control system thereof. The construction method of the water drop type tower drum (tower shell section) comprises the steps of chamfering an arc-shaped plate; auxiliary steel welding: welding a first round steel on the inner wall of the end of the first arc plate at the inner side of the first bevel groove along the length direction of the tower, welding a second round steel on the second bevel groove along the length direction of the tower, and positioning the second round steel in the extending direction of the end of the second arc plate; and the tower barrels are connected. The water drop type tower barrel assembly comprises a first arc plate and a second arc plate; the inner side wall of the end part of the first arc plate is welded with first round steel along the length direction of the tower, the head part of the end part of the second arc plate is welded with second round steel along the length direction of the tower, and the second round steel is welded on the second bevel groove. The invention can directly connect the upper arc plate and the lower arc plate through external welding, avoids folding longitudinal seam turning welding, and does not need to use a back carbon planing welding machine.
Description
Technical Field
The invention belongs to the technical field of welding of special-shaped barrel components, and particularly relates to a water-drop type tower barrel assembly and a water-drop type tower barrel construction method.
Background
The water drop type tower drum (such as a tower section of a wind tower) is manufactured into two arc-shaped tile plates, the tail parts of the arc-shaped tile plates are in a pipeline line, and the shape chart of the welded tower drum is basically shown in figure 1. If the existing technology is adopted to prepare the water drop-shaped tower barrel, more problems exist: 1. the line types at the two ends of the tile plate are relatively large, and the processing is difficult; 2. the tail welding space is smaller, the upper plate and the lower plate are welded, the welding workload is large, the welding stress is larger, and the deformation is easy to generate; 3. the novel water drop type tower is in an irregular special-shaped product shape and structure form, and the concrete cannot be effectively completed by completely adopting the prior technical scheme.
Disclosure of Invention
In order to solve the problems, the invention adopts the following technical scheme:
the first aspect of the present invention relates to a method for constructing a water-drop type tower (drum or tower section), comprising the steps of
Arc pretreatment:
Beveling the end part of the first arc plate, wherein the bevel is beveled, the inner side of the end part is reserved with a root, so that the end part of the first arc plate forms a first beveled bevel,
Beveling the end part of the second arc plate, wherein the bevel is beveled, and the inner side of the end part is reserved with a root, so that the end part of the second arc plate forms a second beveled bevel; the bending process of the first arc plate and the second arc plate can adopt the prior art, and in order to ensure that the plate is easier to roll, a 50mm pressure head can be added on a plate gauge, a milling machine is opened on a steel plate to mill a V-shaped groove with a groove angle, the left root is 3mm, and 50mm of non-milling is left on the steel plate at intervals of 500mm (as shown in fig. 11);
Auxiliary steel welding:
a first round steel is welded on the inner wall of the end head of the first arc plate at the inner side of the first chamfer groove along the length direction of the tower barrel,
Welding a second round steel on the second bevel groove along the length direction of the tower barrel, wherein the second round steel is positioned in the extending direction of the end of the second arc plate,
The outer diameter of the first round steel is smaller than that of the second round steel;
And (3) tower barrel connection:
The first arc plate and the second arc plate are respectively butted end to end, as shown in figure 2, the second round steel is positioned at the extending and crossing position of the thickness center lines of the first arc plate and the second arc plate, the first round steel is positioned at the inner side of the crossing position of the end parts of the first arc plate and the second arc plate (in the preferred case, the center shaft of the second round steel is positioned at the extending and crossing position of the thickness center lines of the first arc plate and the second arc plate),
Welding the inner wall of the end head of the second arc plate at the inner side of the second bevel groove with the first round steel, welding the first bevel groove of the first arc plate with the second round steel,
The tail parts of the first arc plate and the second arc plate are welded, the tail parts are rounded parts, the welding mode is not particularly limited in the invention, and a conventional welding mode can be adopted.
It should be noted that the steps in the pretreatment of the arc plate and the welding of the auxiliary steel mentioned in this strip do not strictly limit the operation sequence, and may be performed in a crossed manner, for example, the pretreatment of the first arc plate and the welding of the auxiliary steel may be performed first, the pretreatment of the second arc plate and the connection of the auxiliary steel may be performed, or the operation of the second arc plate may be performed first alone. The tower comprises a tower whole body and tower sections which are used for assembling and forming a large tower.
In some modes, the inner side of the end part of the first arc plate is reserved with 1-3 mm of root, and the inner side of the end part of the second arc plate is reserved with 1-3 mm of root; as shown in fig. 3 to 5, the thicknesses of the first groove root 312 and the second groove root 412 are generally 1 to 3mm, and in many cases 2mm is used, and the portions are not subjected to chamfering processing, and the original state of the steel sheet is maintained.
The bevel angle of the first arc plate is 30-60 degrees between the first bevel slope and the inner wall of the first arc plate, the bevel angle of the second arc plate is 30-60 degrees between the second bevel slope and the inner wall of the second arc plate, and the angle can be properly amplified when needed and is considered to be equal. In many cases, the angle between the two is set to 45 °.
In some aspects, in the operational flow of auxiliary steel welding, when the second round steel is welded with the second arc plate: performing backing welding on the outer side surfaces of the second round steel and the second arc plate, filling 1/3 (not strictly limited, about value, if the adjustment is avoided intentionally, the adjustment should be within the scope of the invention even if the effect is slightly inferior), performing carbon planing on the inner side surfaces of the second round steel and the second arc plate after cooling, wherein the carbon planing depth is 1/2 of the backing welding depth or the carbon planing depth is equal to the substrate with exposed metallic luster, and then welding the connecting part of the inner side of the second round steel and the second arc plate at the welding outer side connecting part; the first round steel is in spot welding connection with the first arc plate.
When the tower tube is connected, the first round steel and the second arc plate are welded in an angle welding mode, and the second round steel and the first arc plate are welded in a backing welding mode.
In some modes, the welding seam of the fillet welding of the first round steel and the second arc plate fills the rounding gap between the first round steel and the second arc plate, so that paint is prevented from being attached.
In some aspects, when the first arc plate is docked end to end with the second arc plate:
And placing the second arc plate on the roller frame, and adjusting the second round steel and the tail end of the second arc plate to be positioned on the same horizontal plane.
In some modes, the outer diameter of the second round steel is 1.5-3 times of the thickness of the arc plate, so that the second round steel can be welded with the first arc plate and the second arc plate conveniently and rapidly in the follow-up process. The external diameter of first round steel is 0.5~1 times of arc board thickness generally, from this can be more convenient with second round steel setting in first arc board, second arc board intersection position. In some examples, the second round steel has an outer diameter that is 2 times the thickness of the arc plate, and the center line of the thickness of the plate of the upper and lower tiles can be better located at the center of the round steel. As shown in fig. 12, the setting manner can be verified by the following method: 1. drawing a cross section of the round steel (the center position of the round steel), extending the outer surface of the round steel, and drawing a steel seal line; 2. the position of extending round steel on the outer surfaces of the upper tile plate and the lower tile plate is given through a drawing theory, and the distance from the steel seal line outside the round steel is given; 3. the plate thickness center line of the tile plate is judged whether to be at the center position of the round steel or not by arranging the steel ruler outside the tile plate and extending to the position of the round steel.
The second aspect of the invention relates to a water drop type tower tube assembly, which comprises a first arc plate and a second arc plate which can form a water drop type tower tube after being mutually connected end to end, wherein the tail parts of the first arc plate and the second arc plate are connected to form a round blunt end of a water drop type structure,
The end part of the first arc plate is provided with a first bevel groove, the inner side of the first bevel groove is provided with a first groove root part, the outer side of the first bevel groove is beveled from inside to outside to the tail end of the first arc plate, the tail part of the first arc plate is provided with a first plate tail welding seam part,
The end part of the second arc plate is provided with a second bevel groove, the inner side of the second bevel groove is provided with a second groove root, the outer side of the second bevel groove is beveled from inside to outside, the tail end of the second arc plate is provided with a second plate tail welding seam part; wherein,
The inner side wall of the end part of the first arc plate is welded with first round steel along the length direction of the tower, the head part of the end part of the second arc plate is welded with second round steel along the length direction of the tower, and the second round steel is welded with the second bevel groove.
In some modes, when the tail parts of the first arc plate and the second arc plate are in butt joint, the central shaft of the second round steel is positioned at the extending and crossing part of the central lines of the first arc plate and the second arc plate.
In some aspects, the first arc plate and the second arc plate are joined at their ends by welding the first plate tail weld face and the second plate tail weld face.
In some aspects, the central axis of the first round steel is coplanar with the first chamfer groove inner edge, the first aft weld inner edge,
And the central axis of the second round steel is coplanar with the inner side edge of the second bevel groove and the inner side edge of the second plate tail weld joint.
The beneficial effects of the invention are as follows: the upper arc plate and the lower arc plate can be directly connected through external welding, so that folding longitudinal seam turning welding is avoided, and a back carbon planing welding machine is not required; the welding deformation amount of the tail group is reduced, the largest thermal deformation is born by round steel, the tail deformation control is reduced, the situation that the welding is performed up and down because the tail welding deformation is poor is avoided, and the welding stress is reduced.
Drawings
FIG. 1 is a schematic diagram of a conventional welding structure;
FIG. 2 is a schematic view of a welding structure according to the present invention;
FIG. 3 is a schematic view of an arc plate end head structure;
FIGS. 4-5 are schematic diagrams of the structure of the pretreated first arc plate and the pretreated second arc plate;
FIG. 6 is a view of a second arc plate when ready for docking;
FIGS. 7-8 are views of the first arc plate, the second arc plate, and a partial A enlargement;
FIGS. 9-10 are schematic diagrams of welded rear head and tail ends of a drop-shaped tower;
FIG. 11 is a sheet material rounding process diagram;
Fig. 12 is a schematic view of welding-assisted steel positioning.
In the figure:
1. The welding device comprises a second round steel, a first arc plate, a second arc plate, a first beveling groove, a second beveling groove, a first plate tail welding seam part, a second plate tail welding seam part, a first beveling slope surface, a second beveling slope surface, a first groove root part, a second groove root part, a first plate tail welding seam surface, a second plate tail welding seam surface, a first arc plate tail welding seam abutting position and a second arc plate tail welding seam abutting position.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1:
the construction method of the water drop type tower drum comprises the following steps of
Arc pretreatment:
beveling the end part of the first arc plate 3, wherein the bevel angle is 30-60 degrees, the inner side of the end part is left with a root (generally not cut or with larger angle) so that the end part of the first arc plate 3 forms a first bevel 31,
Beveling the end part of the second arc plate 4, wherein the bevel angle is 30-60 degrees, and the inner side of the end part is reserved with roots, so that a second bevel 41 is formed at the end part of the second arc plate 4;
Auxiliary steel welding:
A first round steel 2 is welded on the inner wall of the end head of the first arc plate 3 at the inner side of the first chamfer groove 31 along the length direction of the tower barrel,
A second round steel 1 is welded on the second chamfer groove 41 along the length direction of the tower barrel, the second round steel 1 is positioned in the extending direction of the end of the second arc plate 4,
The outer diameter of the first round steel 2 is smaller than that of the second round steel 1;
And (3) tower barrel connection:
the first arc plate 3 and the second arc plate 4 are respectively butted end to end, so that the second round steel 1 is positioned at the extending and crossing position of the thickness center lines of the first arc plate 3 and the second arc plate 4, the first round steel 2 is positioned at the inner side of the crossing position of the end parts of the first arc plate 3 and the second arc plate 4,
The inner wall of the end head of the second arc plate 4 at the inner side of the second bevel groove 41 is welded with the first round steel 2, the first bevel groove 31 of the first arc plate 3 is welded with the second round steel 1,
And welding the tail parts of the first arc plate 3 and the second arc plate 4. The tail part is a rounded part, and the welding mode is not particularly limited in the invention, and a conventional welding mode can be adopted, and the first arc plate 3 and the second arc plate 4 can be welded by welding rods after the first arc plate tail welding seam abutting position 322 is abutted with the second arc plate tail welding seam abutting position 422.
When the V-shaped groove is formed by adopting the process shown in fig. 11 during the rolling, the strength requirement of end processing is met, the processing is met, and the cutting opening can be reserved. Avoiding: 1) The groove is opened, the tail part is relatively large in line type, the rolling processing cannot be performed, and the groove at the end part cannot be subjected to forced extrusion processing, so that the processing is not in place; 2) The end part can be stressed without beveling, so that beveling is performed after the end part is machined, workload is caused, and the problems that conventional semiautomatic beveling cannot be performed and the like are solved.
In some modes, the inner side of the end part of the first arc plate 3 is reserved with 1-3 mm of root, and the inner side of the end part of the second arc plate 4 is reserved with 1-3 mm of root;
The included angle of the first inclined slope 311 of the first arc plate 3 and the inner wall of the first arc plate 3 is 30-60 degrees, and the included angle of the second arc plate 4 is 30-60 degrees between the second inclined slope 411 and the inner wall of the second arc plate 4. The root can be the included angle between the outer side surface of the root 312 of the first groove and the inner wall of the first arc plate 3 is larger than the included angle between the first inclined slope 311 and the inner wall of the first arc plate 3, and the structure on the other arc plate is the same as the included angle.
In some ways, in auxiliary steel welding,
When the second round steel 1 is welded with the second arc plate 4: performing backing welding on the outer side surfaces of the second round steel 1 and the second arc plate 4, filling 1/3 penetration, cooling, performing carbon planing on the inner side surfaces of the second round steel 1 and the second arc plate 4, performing carbon planing to the depth of 1/2 of the backing welding depth or performing carbon planing to the substrate with exposed metallic luster, then welding the connecting part of the inner side connecting part of the second round steel 1 and the second arc plate 4 at the welding outer side connecting part,
The first round steel 2 is in spot welding connection with the first arc plate 3;
when the tower is connected with the tower cylinder,
The first round steel 2 and the second arc plate 4 are welded in an angle welding mode, and the second round steel 1 and the first arc plate 3 are welded in a backing welding mode.
In some embodiments, the fillet welded seam between the first round steel 2 and the second arc plate 4 fills the rounding gap between the first round steel 2 and the second arc plate 4.
In some embodiments, when the first arc plate 3 and the second arc plate 4 are butted end to end, respectively:
And placing the second arc plate 4 on the roller frame, and adjusting the second round steel 1 and the tail end of the second arc plate 4 to be positioned on the same horizontal plane. A horizontal height can be spatially virtual, and the distance from the horizontal height to the base surface is equal to the height requirement of production.
In some modes, the outer diameter of the second round steel 1 is 1.5-3 times of the thickness of the arc plate.
Example 2:
The water drop type tower tube assembly comprises a first arc plate 3 and a second arc plate 4 which can form a water drop type tower tube after being mutually connected end to end, the tail parts of the first arc plate 3 and the second arc plate 4 are connected to form a round blunt end of a water drop type structure,
The end part of the first arc plate 3 is provided with a first bevel groove 31, the inner side of the first bevel groove 31 is provided with a first groove root 312, the outer side is beveled from inside to outside to the tail end of the first arc plate 3, the tail part is provided with a first plate tail welding seam part 32,
The end part of the second arc plate 4 is provided with a second bevel groove 41, the inner side of the second bevel groove 41 is provided with a second groove root 412, the outer side of the second bevel groove is beveled from inside to outside to the tail end of the second arc plate 4, and the tail part of the second arc plate is provided with a second plate tail welding seam part 42; wherein,
The inside wall of the tip of first arc board 3 welds along tower section of thick bamboo length direction and is equipped with first round steel 2, the head of the tip of second arc board 4 welds along tower section of thick bamboo length direction and is equipped with second round steel 1, second round steel 1 weld in second chamfer groove 41. All shown in the drawings are cross-sectional views, and the tower cylinders (tower sections) are cylindrical structures. When the tower sections are in use, a plurality of tower sections are required to be axially connected to form a complete tower, and the specific connection mode can be adopted in the prior art, for example, the connection is carried out through welding flanges.
In some modes, when the tail parts of the first arc plate 3 and the second arc plate 4 are in butt joint, the central shaft of the second round steel 1 is positioned at the extending and crossing part of the thickness central lines of the first arc plate 3 and the second arc plate 4.
As shown in fig. 8 and 10, the first arc plate 3 and the second arc plate 4 are connected by welding the first plate tail weld surface 321 and the second plate tail weld surface 421.
In some embodiments, the central axis of the first round steel 2 is coplanar with the inner edge of the first bevel groove 31 and the inner edge of the first butt weld 32, as in the state of fig. 7, when the first arc plate 3 is placed horizontally, the inner edge of the first bevel groove 31 and the inner edge of the first butt weld 32 are generally the lower ends of the first groove root 312 and the first arc plate butt weld abutment 322 of both.
The central axis of the second round steel 1 is coplanar with the inner edge of the second bevel 41 and the inner edge of the second tail weld 42.
The concrete construction flow is described as follows:
step 1:
the second round steel 1 and the second arc plate 4 are welded on the ground jig, as shown in fig. 4;
The second arc plate 4 is beveled, the included angle between the bevel angle and the round steel is 45 degrees, and the root is left for 2mm; selecting round steel with the diameter 2 times of the thickness of the steel plate; measuring the position of the round steel, wherein the center position of the round steel is the center position of an extension line of the upper plate and the lower plate; front priming welding is carried out, and the welding is filled to the penetration of one third; after the waiting welding pool is naturally cooled, carrying out carbon planing on the back surface, wherein the depth of the carbon planing is half of the depth of backing welding until the substrate with metallic luster is exposed, and taking the two parts; and welding the back surface, welding the front surface, and performing UT (ultra-violet) inspection after construction is finished. Step 2:
Step 1, after UT inspection is completed after welding is completed, a roller carrier is arranged, as shown in fig. 6, the center and the horizontal position of a tile plate on the roller carrier can be automatically adjusted;
a. designing program simulation tile board in computer to regulate the center and level data of roller frame;
b. Inputting the set parameters of the computer to the automatic adjusting roller frame;
c. placing the tile plate on the roller frame to determine the center positions of the tile plate and the roller frame, so that the two centers are overlapped, and measuring by adopting an external precise control device;
d. after the steps are finished, an automatic team formation adjusting program is operated to realize automatic team formation.
Step 3:
The first round steel 2 and the first arc plate 3 are welded on the ground, and the first round steel 2 is welded on two sides, as shown in fig. 5 and 9;
Beveling an upper arc plate of the first arc plate 3, wherein the included angle between the bevel angle and the auxiliary round steel (second round steel) is 45 degrees, and the root is left for 2mm; spot welding small round steel on an upper arc plate; hoisting the assembled upper arc plate to the lower arc plate; checking whether the center position of the outer round steel extends to the crossing position of the center line of the upper arc plate thickness and the lower arc plate thickness; positioning the upper arc and adjusting the position of the inner round steel according to the center of the central axis and the upper and lower arc plates, as shown in fig. 2, and spot welding; and (3) hanging and unloading the upper arc plate, and welding the inner round steel first round steel 2 on the temporary jig frame, wherein the round steel is in a soft toe transition form with a welding leg form at the rear end of the upper arc plate, and the front end is in plugging welding. Step 4
After the half tower section completed by hoisting the upper arc plate after the step 3 is completed is assembled by spot welding, the central horizontal line is measured, as shown in fig. 7.
Step 5
The welding head and the rear welding tail of the water drop type tower section are shown in fig. 9, and the specific welding node of the tail is as follows:
Measuring a central horizontal line after the upper arc plate falls down, and adjusting the central horizontal line through a turbine frame; the fillet weld fills the rounding gap between the inner round steel and the lower arc plate, so that paint is prevented from being unable to adhere; checking the center line of the upper arc plate and the lower arc plate before welding again; checking whether the center position of the outer round steel before welding extends to the intersection position of the center lines of the upper arc plate thickness and the lower arc plate thickness; performing backing welding on the upper arc plate and the outer round steel, reducing the temperature to a natural temperature, and performing multi-layer cover surface welding after the white metal substrate is exposed by the carbon plane; and measuring the welded central horizontal line after welding, and checking the weld joint UT after passing the pass. And finally, after the welding line is qualified, assembling the roller tire frames, and finally checking the welding line and the whole accuracy.
It will be apparent to those skilled in the art that various modifications to the above embodiments may be made without departing from the general spirit and concepts of the invention. Which fall within the scope of the present invention. The protection scheme of the invention is subject to the appended claims.
Claims (10)
1. The construction method of the water drop type tower drum is characterized by comprising the following steps of
Arc pretreatment:
Beveling the end part of the first arc plate (3), leaving roots at the inner side of the end part, forming a first bevel groove (31) at the end part of the first arc plate (3),
Beveling the end part of the second arc plate (4), leaving roots on the inner side of the end part, and forming a second bevel groove (41) on the end part of the second arc plate (4);
Auxiliary steel welding:
A first round steel (2) is welded on the inner wall of the end head of the first arc plate (3) at the inner side of the first chamfer groove (31) along the length direction of the tower barrel,
A second round steel (1) is welded on the second chamfer groove (41) along the length direction of the tower barrel, the second round steel (1) is positioned in the extending direction of the end head of the second arc plate (4),
The outer diameter of the first round steel (2) is smaller than that of the second round steel (1);
And (3) tower barrel connection:
The first arc plate (3) and the second arc plate (4) are respectively butted end to end, so that the second round steel (1) is positioned at the extending and crossing position of the thickness center lines of the first arc plate (3) and the second arc plate (4), the first round steel (2) is positioned at the inner side of the crossing position of the end parts of the first arc plate (3) and the second arc plate (4),
The inner wall of the end head of a second arc plate (4) at the inner side of a second beveling groove (41) is welded with the first round steel (2), the first beveling groove (31) of the first arc plate (3) is welded with the second round steel (1),
And welding the tail parts of the first arc plate (3) and the second arc plate (4).
2. The construction method of the water drop type tower drum according to claim 1, wherein roots are left 1-3 mm inside the end part of the first arc plate (3), and roots are left 1-3 mm inside the end part of the second arc plate (4);
the included angle of the first inclined slope (311) of the first arc plate (3) and the inner wall of the first arc plate (3) is 30-60 degrees, and the included angle of the second arc plate (4) is 30-60 degrees.
3. The method of constructing a water droplet tower according to claim 1, wherein, in the auxiliary steel welding,
When the second round steel (1) is welded with the second arc plate (4): performing backing welding on the outer side surfaces of the second round steel (1) and the second arc plate (4), filling 1/3 penetration, performing carbon planing on the inner side surfaces of the second round steel (1) and the second arc plate (4) after cooling, wherein the carbon planing depth is 1/2 of the backing welding depth or the carbon planing depth is equal to the substrate with exposed metallic luster, then welding the connecting part of the inner side connecting part of the second round steel (1) and the second arc plate (4) at the welding outer side,
The first round steel (2) is in spot welding connection with the first arc plate (3);
when the tower is connected with the tower cylinder,
The first round steel (2) and the second arc plate (4) are welded in an angle welding mode, and the second round steel (1) and the first arc plate (3) are welded in a backing welding mode.
4. A method of constructing a water droplet tower according to claim 3, wherein the fillet of the first round steel (2) to the second arc plate (4) fills the rounding gap between the first round steel (2) and the second arc plate (4).
5. The construction method of the water drop type tower according to claim 1, wherein when the first arc plate (3) and the second arc plate (4) are respectively butted end to end:
and (3) arranging the second arc plate (4) on the roller frame, and adjusting the second round steel (1) and the tail end of the second arc plate (4) to be positioned on the same horizontal plane.
6. The construction method of the water drop type tower according to claim 1, wherein the outer diameter of the second round steel (1) is 1.5-3 times of the thickness of the arc plate.
7. The water drop type tower tube assembly is characterized by comprising a first arc plate (3) and a second arc plate (4) which can form a water drop type tower tube after being mutually connected end to end, the tail parts of the first arc plate (3) and the second arc plate (4) are connected to form a round blunt end of the water drop type structure,
The end part of the first arc plate (3) is provided with a first bevel groove (31), the inner side of the first bevel groove (31) is provided with a first groove root (312), the outer side of the first bevel groove is beveled from inside to outside to the tail end of the first arc plate (3), the tail part of the first arc plate is provided with a first plate tail welding seam part (32),
The end part of the second arc plate (4) is provided with a second bevel groove (41), the inner side of the second bevel groove (41) is provided with a second groove root (412), the outer side of the second bevel groove is beveled from inside to outside to the tail end of the second arc plate (4), and the tail part of the second arc plate is provided with a second plate tail welding seam part (42); wherein,
The inner side wall of the end part of the first arc plate (3) is welded with a first round steel (2) along the length direction of the tower, the head of the end part of the second arc plate (4) is welded with a second round steel (1) along the length direction of the tower, and the second round steel (1) is welded with a second beveling groove (41).
8. The water drop tower assembly according to claim 7, wherein when the tail parts of the first arc plate (3) and the second arc plate (4) are in butt joint, the central axis of the second round steel (1) is positioned at the extending and crossing part of the thickness central lines of the first arc plate (3) and the second arc plate (4).
9. The water drop tower assembly according to claim 7, wherein the tail connection of the first arc plate (3), the second arc plate (4) is achieved by welding the first tail weld face (321) and the second tail weld face (421).
10. The water droplet tower assembly according to claim 7, characterized in that the central axis of the first round steel (2) is coplanar with the inner edge of the first chamfer groove (31), the inner edge of the first plate tail weld (32),
The central axis of the second round steel (1) is coplanar with the inner side edge of the second chamfer groove (41) and the inner side edge of the second plate tail weld joint part (42).
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