CN218963692U - Major diameter burst formula wind power tower section of thick bamboo flange ovality orthotic devices - Google Patents
Major diameter burst formula wind power tower section of thick bamboo flange ovality orthotic devices Download PDFInfo
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- CN218963692U CN218963692U CN202222533863.8U CN202222533863U CN218963692U CN 218963692 U CN218963692 U CN 218963692U CN 202222533863 U CN202222533863 U CN 202222533863U CN 218963692 U CN218963692 U CN 218963692U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model provides an ovality correction device for a flange of a large-diameter segmented wind power tower cylinder, which is used for carrying out ovality correction on the flange at the end part of a large-diameter segmented wind power sleeve in a vertical hoisting state, and comprises the following steps: the ejector rod is horizontally arranged and has a length matched with the diameter of the flange; the small power cylinder comprises a cylinder body and a piston rod; and the top frame is fixedly arranged at the rear end part of the cylinder body, a limiting groove matched with the free end part of the piston rod is formed in the central position of one end surface of the top rod, the free end part of the piston rod is movably arranged in the limiting groove, and the top frame is provided with an arc-shaped pressing surface matched with the inner wall of the flange. The ejector rod is provided with a plurality of sections of square pipes which are detachably connected in sequence, the lengths of each section of square pipe are different from each other, two ends of each section of square pipe are respectively provided with a flange, and the end face of the flange positioned at the front end part of the first section of square pipe is provided with a limit groove; the small power cylinder is a portable small hydraulic cylinder.
Description
Technical Field
The utility model belongs to the technical field of wind power tower flange correction devices, and particularly relates to a large-diameter segmented wind power tower flange ellipticity correction device.
Background
With the rapid development of wind power industry, large main engines successively develop various large megawatt towers, and the application scenes of the large-diameter towers are gradually generalized. However, the tower barrels have large diameters, large diameter-thickness ratios and narrow flange widths, and the problem of ovality deformation of part of the flanges of the tower barrels occurs. Especially, a tower section of thick bamboo of burst form, this tower section of thick bamboo is formed through a large amount of bolt-up connection by 3 tiles 120, compares with conventional circular tower section of thick bamboo, and the structural integrity and the stability of burst formula tower section of thick bamboo are relatively poor, and conventional ovality correction mode is inapplicable, because when correcting ovality under the horizontality, can receive the influence of tower section of thick bamboo self gravity, correction force and correction deflection that the flange received in the correction process all can be dispersed to the concatenation department of burst tower section of thick bamboo structure, can't effectively correct.
However, in the prior art, besides the requirement of using a large hydraulic cylinder with the height of more than 100T and a group of H-shaped steel large support rod integrated pieces, the large hydraulic cylinder is long in size and heavy in weight, and can only be suitable for correcting flange ovality of a common tower in a horizontal state. In addition, equipment such as a large crane, a roller frame and the like is needed to assist in ovality correction, so that the operation cost is high, the construction difficulty is high and the correction time is long.
Disclosure of Invention
The utility model aims to solve the technical problems, and aims to provide the ovality correction device for the flange of the large-diameter segmented wind power tower, which can be used for conveniently and quickly carrying out ovality correction treatment on the flange of the large-diameter segmented wind power tower in a vertical hoisting state.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an ovality correction device for a flange of a large-diameter segmented wind power tower cylinder, which is used for carrying out ovality correction on the flange at the end part of a large-diameter segmented wind power sleeve in a vertical hoisting state, and has the characteristics that: the ejector rod is horizontally arranged and has a length matched with the diameter of the flange; the small power cylinder comprises a cylinder body and a piston rod; the top frame is fixedly arranged at the rear end part of the cylinder body, a limiting groove matched with the free end part of the piston rod is formed in the central position of one end surface of the top rod, the free end part of the piston rod is movably arranged in the limiting groove, and the top frame is provided with an arc-shaped pressing surface matched with the inner wall of the flange.
The flange ellipticity correction device for the large-diameter segmented wind power tower provided by the utility model can also have the following characteristics: wherein, the ejector rod is provided with a plurality of sections of square pipes which are connected in sequence in a detachable way.
The flange ellipticity correction device for the large-diameter segmented wind power tower provided by the utility model can also have the following characteristics: wherein, two ends of each section side pipe are respectively provided with a flange, and the end face of the flange positioned at the front end part of the first section side pipe is provided with a limit groove.
The flange ellipticity correction device for the large-diameter segmented wind power tower provided by the utility model can also have the following characteristics: wherein, the lengths of each section of square tube are different from each other.
In the large-diameter segmented wind power tower flange ovality correction device provided by the utility model, the top frame comprises two arc-shaped strips and two connecting rods, the two arc-shaped strips are symmetrically arranged relative to the axis of the cylinder body and respectively extend along the circumferential direction of the flange, the outer surfaces of the arc-shaped strips form arc-shaped jacking surfaces, the two connecting rods are respectively fixedly arranged on two sides of the cylinder body, and two end parts of each connecting rod are respectively fixedly connected with the two arc-shaped strips.
The flange ellipticity correction device for the large-diameter segmented wind power tower provided by the utility model can also have the following characteristics: wherein, small-size pneumatic cylinder is small-size pneumatic cylinder.
The flange ellipticity correction device for the large-diameter segmented wind power tower provided by the utility model can also have the following characteristics: the small hydraulic cylinder is a portable small hydraulic cylinder.
The flange ellipticity correction device for the large-diameter segmented wind power tower provided by the utility model can also have the following characteristics: wherein, the travel of the portable small-sized hydraulic cylinder is not less than 200mm.
Effects and effects of the utility model
According to the flange ovality correcting device for the large-diameter segmented wind power tower barrel, the ejector rods are horizontally arranged, the center of one end face of each ejector rod is provided with the limiting groove matched with the free end of the piston rod of the small power cylinder, the free end of the piston rod is movably arranged in the limiting groove, the ejector frame is fixedly arranged at the rear end of the cylinder body and is provided with the arc-shaped jacking surface matched with the inner wall of the flange, so that the ovality of the flange at the end of the large-diameter segmented wind power sleeve in the vertical hoisting state can be corrected conveniently and rapidly, a crane or forklift is not needed, only 2-3 of the flange ovality correcting devices can be used for completing correction work, the equipment requirement and equipment cost on site are reduced, the cost advantages of being lower are achieved, the flange ovality correcting device is easy to carry, the construction is simple, and the manpower resource cost is greatly saved.
Drawings
FIG. 1 is a schematic plan view of a flange ovality correction device for a large-diameter segmented wind turbine tower in an embodiment of the utility model;
FIG. 2 is a schematic diagram of a three-dimensional structure of an ovality correction device for a flange of a large-diameter segmented wind power tower in which ovality is corrected; and
fig. 3 is an enlarged view of a portion a in fig. 2.
Detailed Description
The conception, specific structure, and technical effects of the present utility model will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present utility model.
< example >
FIG. 1 is a schematic plan view of a flange ovality correction device for a large-diameter segmented wind turbine tower in an embodiment of the utility model; fig. 2 is a schematic diagram of a three-dimensional structure of an ovality correction device for a flange of a large-diameter segmented wind power tower in which ovality is corrected.
As shown in fig. 1 and 2, in the present embodiment, the ovality correction device 100 for a flange of a large-diameter segmented wind power tower barrel is used for ovality correction of a flange 210 at an end of a large-diameter segmented wind power sleeve 200 in a vertical hoisting state, and in the present embodiment, the wind power sleeve 200 is a three-piece sleeve. The large-diameter segmented wind power tower flange ovality correction device 100 comprises an ejector rod 10, a small power cylinder 20 and an ejector frame 30.
As shown in fig. 1 and 2, the carrier rod 10 is arranged horizontally in use, having a length matching the diameter of the flange 210. One end of the ejector rod 10 is used for contacting with the inner wall of the flange 210, and a limit groove 10a matched with the free end of the piston rod 22 of the small power cylinder 20 is arranged at the central position of the end face of the other end.
The ejector rod 10 is provided with a plurality of sections of square tubes 11 which are detachably connected in sequence, and two ends of each section of square tube 11 are respectively provided with a flange 111; the adjacent square pipes 11 are detachably connected by fixing the corresponding two flanges 111 by means of bolts 112. The above-mentioned limit groove 10a is provided at the center of the end face of the flange 111 at the front end of the first square pipe 11.
In this embodiment, the lengths of the plurality of square tubes 11 in the jack 10 are different from each other, and the lengths include 3000mm, 2000mm, 1000mm, 800mm, 600mm, 400mm, and 200mm; wherein, the 3000mm square tube is the first square tube; the square tube 11 is obtained by cutting out square tubes of 150mm×150mm×6300 mm.
As shown in fig. 1 and 2, the small-sized power cylinder 20 includes a cylinder body 21 and a piston rod 22 having one end movably mounted in the cylinder body 21. In use, the free end of the piston rod 22 is movably mounted in the limit groove 10a of the ejector rod 10.
In this embodiment, the small power cylinder 20 is a portable small hydraulic cylinder with a tonnage of 100T and a stroke of 200mm produced by Kazuela hydraulic tool factories in Tay. Of course, the small power cylinder 20 may be a portable small pneumatic cylinder according to practical needs.
Fig. 3 is an enlarged view of a portion a in fig. 2.
As shown in fig. 1 to 3, the top frame 30 is fixedly provided at the rear end portion of the cylinder 21, and has an arc-shaped pressing surface 30a that matches the inner wall of the flange 210. The top frame 30 comprises two arc-shaped slats 31 and two connecting rods 32.
The two arc-shaped laths 31 are symmetrically arranged with respect to the axis of the cylinder 21, and extend along the circumferential direction of the flange 210, respectively; the outer surface of each arc-shaped slat 31 is formed with the above-described arc-shaped pressing surface 30a.
The middle positions of the two connecting rods 32 are fixedly arranged on two sides of the cylinder body 21 in a welding mode respectively, and two end parts of each connecting rod 32 are fixedly connected with the two arc-shaped battens 31 in a welding mode respectively.
In the present embodiment, the length of the portable small hydraulic cylinder and the top frame 30 as a whole in the longitudinal direction of the piston rod 22 is 400mm.
In this embodiment, as shown in fig. 2, the ovality correction device 100 for a flange 210 of a large-diameter segmented wind turbine tower 200 performs ovality correction on the flange 210 of the large-diameter segmented wind turbine tower, and includes the following steps:
in step S1, in a state that the tower 200 is vertically hoisted, the inner diameter of the flange 210 of the tower 200 is measured by a laser range finder to find out the deviation value of the flange ellipticity, and usually 8 points are measured at intervals of 45 degrees, if the ellipticity deviation value needs to be accurately measured, the measurement points can be increased. The position of the flange 210 with the smallest diameter measured finally is the correction position.
Step S2, selecting an adaptive square tube 11 according to the diameter measured value of the flange 210 with the ovality corrected, and assembling the square tube 11 to form the ejector rod 10 matched with the diameter of the flange 210.
In step S3, after determining the ovality correction position, the small power cylinder 20 and the ejector rod 10 are fixedly supported at the point with the smallest diameter (as shown in fig. 2), the small power cylinder 20 works to gradually move the ejector frame 30 towards the inner wall of the flange 210, so that the arc-shaped pressing surface 30a contacts with the inner wall, and thus, pressure is slowly applied to the inner wall of the flange 210, and the ovality needs to be pushed beyond the original deviation value (generally, more ejection is needed to exceed the standard value by 3 times), then force is removed, and after the flange is recovered, ovality is measured. This step is repeated until the ellipticity is within the acceptable range and the correction is completed.
Because the tower 200 is in the vertical state to finish ellipticity correction, the installation of the connecting bolt of the tower 200 can be immediately finished after the correction is successful, and repeated hoisting operation is not required.
Effects and effects of the examples
According to the flange ovality correcting device for the large-diameter segmented wind power tower barrel, the ejector rods are horizontally arranged, the center of one end face of each ejector rod is provided with the limiting groove matched with the free end of the piston rod of the small power cylinder, the free end of the piston rod is movably arranged in the limiting groove, the ejector frame is fixedly arranged at the rear end of the cylinder body and is provided with the arc-shaped jacking surface matched with the inner wall of the flange, so that the ovality of the flange at the end of the large-diameter segmented wind power sleeve in the vertical hoisting state can be corrected conveniently and rapidly, a crane or forklift is not needed, only 2-3 of the flange ovality correcting devices can be used for completing correction work, the equipment requirement and equipment cost on site are reduced, the cost advantages of being lower are achieved, the flange ovality correcting device is easy to carry, the construction is simple, and the manpower resource cost is greatly saved.
In addition, because the ejector rod is provided with the multistage square pipes which are connected in sequence in a detachable mode, the storage and the transportation are convenient, the combined scheme of the plurality of square pipes replaces the integral H-shaped steel to be supported in a large scale, the weight and the cost of materials are reduced, and the same correcting effect can be achieved.
Further, because the lengths of each section of square tube are mutually different, the requirement that the ejector rods with various lengths are convenient to combine to adapt to flanges with different diameters is met, the adaptability of the correcting device to the flanges with different diameters is improved, and the flanges with various diameters can be covered.
In addition, because the two ends of each section of square tube are respectively provided with flanges, the convenience of the assembly of the ejector rod is further improved.
In addition, because the roof-rack contains two arcuation laths and two connecting rods, two arcuation laths are for the axis symmetry of cylinder body arranges and extend along the circumference of flange respectively, and the outer surface of arcuation lath forms the arcuation roof pressure face, and two connecting rods are fixed respectively and are set up in the both sides of cylinder body, and the both ends of every connecting rod are fixed connection with two arcuation laths respectively, simple structure, easy manufacturing, the cost is lower.
In addition, because the small-sized power cylinder adopts the portable small-sized hydraulic cylinder, the small-sized power cylinder is easy to purchase from the market, has low cost, and further improves the convenience and the light weight of construction.
The above embodiments are preferred examples of the present utility model, and are not intended to limit the scope of the present utility model.
Claims (8)
1. The utility model provides a piece-type wind-powered electricity generation tower section of thick bamboo flange ovality orthotic devices of major diameter for carry out ovality correction to the flange of the piece-type wind-powered electricity generation sleeve tip of major diameter under vertical hoist and mount state, its characterized in that includes:
the ejector rod is horizontally arranged and has a length matched with the diameter of the flange;
the small power cylinder comprises a cylinder body and a piston rod; and
a top frame fixedly arranged at the rear end part of the cylinder body,
wherein, a limit groove matched with the free end part of the piston rod is arranged at the central position of one end surface of the ejector rod, the free end part of the piston rod is movably arranged in the limit groove,
the top frame is provided with an arc-shaped top pressing surface matched with the inner wall of the flange.
2. The large-diameter segmented wind power tower flange ovality correction device according to claim 1, wherein:
the ejector rod is provided with a plurality of sections of square tubes which are connected in a detachable mode in sequence.
3. The large-diameter segmented wind power tower flange ovality correction device according to claim 2, wherein:
wherein, flanges are respectively arranged at two ends of each section of square tube,
the limiting groove is arranged on the end face of the flange positioned at the front end part of the square tube at the first section.
4. A large diameter segmented wind turbine tower flange ovality correction device as in claim 2 or 3, wherein:
wherein the lengths of the square pipes of each section are different from each other.
5. The large-diameter segmented wind power tower flange ovality correction device according to claim 1, wherein:
wherein the top frame comprises two arc-shaped laths and two connecting rods,
the two arc-shaped battens are symmetrically arranged relative to the axis of the cylinder body and respectively extend along the circumferential direction of the flange, the outer surfaces of the arc-shaped battens form the arc-shaped jacking surface,
the two connecting rods are fixedly arranged on two sides of the cylinder body respectively, and two end parts of each connecting rod are fixedly connected with the two arc-shaped battens respectively.
6. The large-diameter segmented wind power tower flange ovality correction device according to claim 1, wherein:
wherein, small-size pneumatic cylinder is small-size pneumatic cylinder.
7. The large-diameter segmented wind power tower flange ovality correction device according to claim 6, wherein:
the small hydraulic cylinder is a portable small hydraulic cylinder.
8. The large-diameter segmented wind power tower flange ovality correction device according to claim 7, wherein:
wherein, the stroke of portable small-size pneumatic cylinder is not less than 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222533863.8U CN218963692U (en) | 2022-09-22 | 2022-09-22 | Major diameter burst formula wind power tower section of thick bamboo flange ovality orthotic devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222533863.8U CN218963692U (en) | 2022-09-22 | 2022-09-22 | Major diameter burst formula wind power tower section of thick bamboo flange ovality orthotic devices |
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| Publication Number | Publication Date |
|---|---|
| CN218963692U true CN218963692U (en) | 2023-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222533863.8U Active CN218963692U (en) | 2022-09-22 | 2022-09-22 | Major diameter burst formula wind power tower section of thick bamboo flange ovality orthotic devices |
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| Country | Link |
|---|---|
| CN (1) | CN218963692U (en) |
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2022
- 2022-09-22 CN CN202222533863.8U patent/CN218963692U/en active Active
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