CN210033715U - Non-welded connection structure of fan tower platform - Google Patents
Non-welded connection structure of fan tower platform Download PDFInfo
- Publication number
- CN210033715U CN210033715U CN201920449751.XU CN201920449751U CN210033715U CN 210033715 U CN210033715 U CN 210033715U CN 201920449751 U CN201920449751 U CN 201920449751U CN 210033715 U CN210033715 U CN 210033715U
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- Prior art keywords
- tower
- platform
- suspension
- bearing plate
- locking nut
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- Withdrawn - After Issue
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- 239000000725 suspension Substances 0.000 claims abstract description 43
- 238000003466 welding Methods 0.000 claims abstract description 37
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 230000003313 weakening effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
Abstract
The utility model discloses a non-welding connection structure of a fan tower platform, which comprises a suspension component and an anti-swing support component; the suspension assembly consists of a suspension screw, a welding bearing plate, a lower locking nut and an upper locking nut, wherein two ends of the suspension screw are respectively provided with threads, one end of the threads is matched and connected with a threaded hole on the inner end surface of the tower flange and is fastened by using the upper locking nut, the welding bearing plate is welded and connected with the other end of the suspension screw, the tower platform is arranged on the welding bearing plate, the welding bearing plate bears the platform pressure, and the lower locking nut is used for fastening; the anti-swing supporting assembly is composed of a support, a supporting screw rod, a rubber pad and a locking nut, the support is welded at the edge position of a tower platform, one end of the supporting screw rod is provided with threads, the other end of the supporting screw rod is a round table capable of increasing the stress area, the rubber pad is glued on the end face of the round table and then abuts against the tower wall, and the supporting screw rod is fixed on the support through the locking nut. The utility model discloses pylon fatigue performance can be improved, pylon material cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of wind power generation's technique and specifically relates to indicate a non-welded connection structure of fan pylon platform.
Background
Wind power generation is a clean and sustainable energy form, and is greatly supported by the nation in recent years, so that the rapid development of domestic wind power is promoted.
The wind turbine mainly comprises a foundation, a tower frame, a main cabin, a hub and blades, wherein the tower frame accounts for more than 15% of the total cost of the wind turbine, and the tower frame is the most basic guarantee for the safety of the whole wind turbine. The safety of the tower must be improved and the cost of the tower must be reduced.
The strength of the wind turbine tower is mainly influenced by static strength, buckling strength and fatigue strength. In towers with fatigue as a main controlling factor, it is particularly important to improve the fatigue performance of the tower, wherein the DC value (defined in European standard EN 1993-1-9: Detail Category, i.e. the stress amplitude corresponding to the material when the material is subjected to fatigue failure in 2e6 cycles) of the material (Q345) is an important parameter influencing the fatigue performance of the tower. In the specification of European standard EN1993-1-9, the DC values of materials in different welding forms are classified in detail, and if accessories in the tower can be welded with the wall of the tower without adopting a process of welding with the wall of the tower, the DC value can be increased from 80MPa to 90MPa, so that the fatigue of the tower can be greatly improved, and the cost of the tower can be reduced.
The traditional accessories in the tower barrel are generally fixed on the inner wall of the tower barrel by adopting a welding process, but the DC value cannot exceed 80MPa at most by adopting the process. According to the expression in the standard EN-1993-1-9, if the accessories in the tower are not welded, the highest DC value can be 90MPa, so that the weight of the tower can be reduced by more than 5%, and for the weight of two or three hundred tons of a single steel tower, the manufacturing cost can be greatly reduced, and the economic benefit of the wind turbine generator can be improved.
There are a number of non-welded connection schemes for the internal tower attachments today, but not many for the tower platform. The platform in the tower is an important plane for overhauling the flange bolt of the tower cylinder and is generally arranged 1.2m below the flange at the top of the tower cylinder section. In practical calculation, if the section where the platform is located does not use the non-welded connection structure, and other sections use the non-welded structure, the fatigue damage distribution of the whole tower is not uniform, and the thickness of the cylinder wall is relatively thick near the platform section. If the tower platform is also used with a non-welded joining process, the entire tower section DC90 may be realized, which may continue to reduce the weight by 3-6 t.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a overcoming prior art's shortcoming and not enough, providing a non-welded connection structure of fan pylon platform, hanging the pylon platform on the flange, realize non-welded connection of fan pylon platform, reach the purpose of optimizing pylon fatigue performance and reduction pylon material cost.
In order to achieve the above object, the present invention provides a technical solution: a non-welding connection structure of a fan tower platform adopts a suspension type platform structure and comprises a suspension component and an anti-swing support component; the suspension assemblies are provided with a plurality of groups and distributed along the circumferential direction of the tower platform, and the anti-swing assemblies are provided with a plurality of groups and distributed along the circumferential direction of the tower platform; the suspension assembly consists of a suspension screw, a welding bearing plate, a lower locking nut and an upper locking nut, wherein a threaded hole in threaded connection with the suspension screw is formed in the inner end face of a tower frame flange of the fan tower frame, threads are respectively arranged at two ends of the suspension screw, one end of the threaded hole is matched and connected with the threaded hole in the inner end face of the tower frame flange and is fastened by the upper locking nut, the welding bearing plate is in welded connection with the other end of the suspension screw to realize the whole life cycle maintenance-free, a tower frame platform is arranged on the welding bearing plate, the welding bearing plate bears the platform pressure, and the lower locking nut is used for fastening to prevent the platform from loosening; the anti-swing supporting assembly is composed of a support, a supporting screw rod, a rubber pad and a locking nut, the support is welded at the edge position of a tower platform, one end of the supporting screw rod is provided with threads, the other end of the supporting screw rod is a round table with an increased stress area, the supporting screw rod is abutted to the tower wall after the rubber pad is glued on the end face of the round table, the supporting screw rod is fixed on the support through the locking nut, and the extending length of the supporting screw rod is adjusted through adjusting the locking nut, so that the anti-swing supporting assembly is completely supported on the tower.
Further, the suspension assembly is connected between two adjacent connecting bolts of the tower flange, the weakening influence on the strength of the tower flange due to extra holes in the flange is eliminated, and meanwhile, the interference can be prevented.
Furthermore, one end of the suspension screw rod connected with the welding bearing plate is processed into a stepped shaft form for preventing the thread from being damaged during welding, and the back of the thread is welded.
Further, the support is of a U-shaped structure.
Further, a threaded hole in the inner end face of the tower frame flange is processed into a through hole or a blind hole.
Compared with the prior art, the utility model, have following advantage and beneficial effect:
1. compared with the traditional welding connection structure, the tower fatigue performance can be improved and the material cost of the tower can be reduced by using the non-welding structure.
2. There are no strict requirements on the type of structure of the tower platform, which can follow the conventional structure.
3. The welding bearing plate at the bottom of the suspension assembly of the design uses a welding process, so that the suspension assembly can be free of maintenance in the whole life cycle, and the operation and maintenance risks and the reliability of the platform are reduced.
4. After the suspension assembly is installed, the welding bearing plate bears the whole pressure of the tower platform, and the suspension assembly and the tower platform generate large friction force, so that the suspension screw rod can hardly rotate in use, the anti-loosening function is realized, and the stable work of the platform is ensured.
5. The design considers the tower swing condition when the fan operates, and in order to prevent the platform from impacting the tower wall in the tower swing, the design has the anti-swing support and restrains the platform from swinging in the circumferential direction through a simple and reliable structure.
Drawings
FIG. 1 is an installation schematic diagram of a non-welded connection structure of a wind turbine tower platform.
Fig. 2 is a schematic view of the installation of the suspension assembly.
Fig. 3 is a schematic view of the installation position of the suspension assembly.
FIG. 4 is a schematic view of the installation of the anti-sway support assembly.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
As shown in fig. 1 to 4, the non-welding connection structure of the wind turbine tower platform provided by the present embodiment adopts a suspension type platform structure, which includes a suspension assembly 1 and an anti-swing support assembly 2; the suspension assemblies 1 are provided with a plurality of groups (the specific number is determined according to the actual structure of the platform and the rated bearing of the platform), and are distributed along the circumferential direction of the tower platform 3; the anti-swing components 2 are provided with a plurality of groups (the specific number is determined according to the actual structure of the platform and the rated bearing of the platform), and are distributed along the circumferential direction of the tower platform 3; the suspension component 1 consists of a suspension screw 11, a welding bearing plate 12, a lower lock nut 13 and an upper lock nut 14, the inner end surface of a tower flange 4 of a fan tower is provided with a threaded hole connected with the suspension screw 11 in a threaded manner and can be processed into a through hole or a blind hole, two ends of the suspension screw 11 are respectively provided with threads, one end of the threads is matched and connected with the threaded hole on the inner end surface of the tower flange 4 and is fastened by the upper lock nut 14, the welding bearing plate 12 is welded and connected with the other end of the suspension screw 11 to realize the maintenance-free whole life cycle, the end of the suspension screw 11 connected with the welding bearing plate 12 is in a stepped shaft manner to prevent the threads from being damaged during welding, and is welded at the back of the threads, the tower platform 3 is arranged on the welding bearing plate 12, the welding bearing plate 12 bears the platform pressure and is fastened by the lower lock nut 13, the platform is prevented from loosening, and after the suspension assembly 1 is installed, the welding bearing plate 12 bears the whole pressure of the tower platform 3, and the welding bearing plate and the tower platform generate larger friction force, so that the suspension screw 11 can hardly rotate in use, the anti-loosening function is realized, and the stable work of the platform is ensured; prevent swing supporting component 2 comprises support 21, supporting screw 22, rubber pad 23 and lock nut 24, support 21 is "U" type, welds the suitable position at the 3 edges of pylon platform, supporting screw 22 one end has the screw thread, and the other end is the round platform of increase lifting surface area, contradicts in tower wall 5 behind the glued rubber pad 23 on the terminal surface of round platform, supporting screw 22 passes through lock nut 24 to be fixed on support 21, through adjusting lock nut 24 adjustment supporting screw 22's extension length, makes prevent swing supporting component 2 support completely on tower wall 5.
The suspension assembly 1 is connected between two adjacent connecting bolts 6 of the tower flange 4, the strength weakening influence on the tower flange caused by extra holes on the flange is eliminated, and meanwhile, the interference can be prevented.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that all the changes made according to the shape and principle of the present invention should be covered within the protection scope of the present invention.
Claims (5)
1. The utility model provides a non-welded connection structure of fan tower platform which characterized in that: a suspended platform structure is adopted, and comprises a suspension component (1) and an anti-swing support component (2); the suspension assemblies (1) are provided with a plurality of groups and distributed along the circumferential direction of the tower platform (3), and the anti-swing assemblies (2) are provided with a plurality of groups and distributed along the circumferential direction of the tower platform (3); the suspension assembly (1) consists of a suspension screw rod (11), a welding bearing plate (12), a lower locking nut (13) and an upper locking nut (14), the inner end face of a tower flange (4) of the fan tower is provided with a threaded hole in threaded connection with the suspension screw rod (11), two ends of the suspension screw rod (11) are respectively provided with threads, one end of the threads is matched and connected with the threaded hole in the inner end face of the tower flange (4) and is fastened by the upper locking nut (14), the welding bearing plate (12) is in welded connection with the other end of the suspension screw rod (11) to realize the maintenance-free whole life cycle, the tower platform (3) is placed on the welding bearing plate (12), the welding bearing plate (12) bears the platform pressure, and the lower locking nut (13) is used for fastening to prevent the platform from loosening; prevent swing supporting component (2) by support (21), supporting screw (22), rubber pad (23) and lock nut (24) constitution, support (21) welding is in pylon platform (3) border position, supporting screw (22) one end has the screw thread, and the other end is the round platform of increase lifting surface area, contradicts in tower wall (5) behind rubber pad (23) is glued on the terminal surface of round platform, supporting screw (22) are fixed on support (21) through lock nut (24), through adjusting the length that stretches out of supporting screw (22) of lock nut (24) adjustment, make prevent swing supporting component (2) and support completely on tower wall (5).
2. The non-welded wind turbine tower platform connection structure of claim 1, wherein: the suspension assembly (1) is connected between two adjacent connecting bolts (6) of the tower flange (4), the strength weakening influence on the tower flange due to extra holes of the flange is eliminated, and meanwhile, the interference can be prevented.
3. The non-welded wind turbine tower platform connection structure of claim 1, wherein: one end of the suspension screw rod (11) connected with the welding bearing plate (12) is processed into a stepped shaft form for preventing thread damage during welding, and welding is carried out on the back of the thread.
4. The non-welded wind turbine tower platform connection structure of claim 1, wherein: the support (21) is of a U-shaped structure.
5. The non-welded wind turbine tower platform connection structure of claim 1, wherein: and the threaded hole of the inner end face of the tower flange (4) is processed into a through hole or a blind hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920449751.XU CN210033715U (en) | 2019-04-04 | 2019-04-04 | Non-welded connection structure of fan tower platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920449751.XU CN210033715U (en) | 2019-04-04 | 2019-04-04 | Non-welded connection structure of fan tower platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210033715U true CN210033715U (en) | 2020-02-07 |
Family
ID=69357882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920449751.XU Withdrawn - After Issue CN210033715U (en) | 2019-04-04 | 2019-04-04 | Non-welded connection structure of fan tower platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210033715U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931225A (en) * | 2019-04-04 | 2019-06-25 | 明阳智慧能源集团股份公司 | A kind of blower fan pylon platform non-solder connection structure |
-
2019
- 2019-04-04 CN CN201920449751.XU patent/CN210033715U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109931225A (en) * | 2019-04-04 | 2019-06-25 | 明阳智慧能源集团股份公司 | A kind of blower fan pylon platform non-solder connection structure |
| CN109931225B (en) * | 2019-04-04 | 2023-12-22 | 明阳智慧能源集团股份公司 | Non-welded connection structure of fan tower platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200207 Effective date of abandoning: 20231222 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200207 Effective date of abandoning: 20231222 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |