CN205714591U - A kind of non-maintaining coupling arrangement of large-scale wind driven generator pylon - Google Patents
A kind of non-maintaining coupling arrangement of large-scale wind driven generator pylon Download PDFInfo
- Publication number
- CN205714591U CN205714591U CN201620329278.8U CN201620329278U CN205714591U CN 205714591 U CN205714591 U CN 205714591U CN 201620329278 U CN201620329278 U CN 201620329278U CN 205714591 U CN205714591 U CN 205714591U
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- CN
- China
- Prior art keywords
- bolt
- pylon
- driven generator
- coupling arrangement
- wind driven
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- 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.)
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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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model discloses the non-maintaining coupling arrangement of a kind of large-scale wind driven generator pylon, including: in the tilting moment bearing wind and fan operation, various vibrations act on down the connector of the transverse load causing blower fan pylon jointly, and this connector is arranged in the bolt-connection combination of blower fan pylon.The utility model has the advantages that: easy and simple to handle, it can be completely eliminated the gap between attachment bolt and bolt hole wall, and forms certain magnitude of interference.Meanwhile, between attachment bolt and bolt hole wall, create huge thrust, it is achieved positive connection, bear transverse load with this.Meanwhile, manufacture installation cost and significantly reduce, be applied between tower flanges define connection, between tower flanges, there is no any relative displacement, be equal to two abutted flange rivetings are become an entirety.So, dead load, dynamic loading, the tilting moment of wind and the various vibration that pylon is subject to, all without causing connection to loosen, fundamentally solves in bolt looseness problem, 20 years continuous service life of blower fan, it is not necessary to attachment bolt is carried out Inspection and maintenance.
Description
Technical field
This utility model relates to the non-maintaining coupling arrangement of a kind of large-scale wind driven generator pylon.
Background technology
Wind-powered electricity generation is the green energy resource having a high potential, it is contemplated that all will keep high speed development in following a very long time
Trend.Power Wind turbines more than hundred multikilowatts is referred to as large-scale wind electricity unit (hereinafter referred to as blower fan)；
The pylon of large fan is typically made with the steel pipe of band tapering.The function of pylon is by electricity generation system (machine
Cabin and runner) support in the air, pylon is the highest, and the wind energy that blower fan obtains is the most, and the pylon of large fan has
Tens meters of rice the most up to a hundred are high.In order to manufacture, transport and being easy for installation, large tower is broken generally into several sections,
As a example by power 1500 kilowatts, the blower fan pylon of highly 80 meters, it is divided into upper, middle and lower three sections.Epimere and cabin phase
Even, hypomere is connected with basis.Between each several part, use bolt-connection.Pylon stress is complicated, bears blower fan
Under gravity dead load, wind effect tension and compression twist and warping combination dynamic loading, also subject to wind wheel rotate cause vibration,
Wind-induced Along-wind vibration and beam wind are to vibration.The service life of blower fan is normal and continuous operation 20 years, right
Attachment bolt requires the highest,.Bolt connection structure is under vibration, on the one hand, clamping force easily declines,
Cause loosening of connected compcnent；Under serious conditions, cause bolt fracture, cause serious accident.
There is gap between prior art high-strength bolt and bolt hole, the biggest pretightning force can only be relied on to produce
Moment of friction is born various vibrations in the tilting moment of wind and fan operation and is jointly acted on down blower fan pylon
The transverse load caused, the bolt strength grade of use is high, diameter is big, quantity is many, the adpting flange of use
Thick especially, flange hole is the most intensive, nonetheless, and the problem that still can not overcome bolt connection loosening.Right
It is the focus that domestic and international project field studies for a long period of time that thread joined structure loosens the research of process.Tongji University builds
The counterbalancing technology building design and research institute's research and development mainly reduces bolt rigidity by increase bolt length, changes
The stress of kind bolt, but still can not fundamentally solve loosening and non-maintaining problem of blower fan pylon attachment bolt.
It addition, prior art also has following significant drawback: the bolt strength grade of use is high, diameter is big, quantity is many,
The adpting flange used is the thickest, and the most intensive manufacturing cost of flange hole is high, and bolt-connection easily loosens, and safeguards
Cost is high.
Utility model content
In view of this, main purpose of the present utility model is to provide exempting from of a kind of large-scale wind driven generator pylon
Safeguarding coupling arrangement, its structure reliable operation is easy, it is possible to thoroughly solve a loosening difficult problem for bolt-connection, fall
The grade of low high intensity screw, reduction quantity and dimensions, reduce the gauge of flange, thus reduce
Manufacturing expense, also saves high maintenance cost.
For reaching above-mentioned purpose, the technical solution of the utility model is achieved in that a kind of large scale wind is sent out
The non-maintaining coupling arrangement of motor pylon, it is characterised in that including: for bearing the connector of transverse load,
This connector is arranged in the bolt-connection combination of blower fan pylon.
This utility model has a following substantive distinguishing features and progress relative to prior art:
Simple in construction is easy and simple to handle, including: for bearing the connector of transverse load, this connector is arranged at
In the bolt-connection combination of blower fan pylon.It can be completely eliminated the gap between attachment bolt and bolt hole wall,
And form certain magnitude of interference.Meanwhile, between connector and bolt hole wall, create huge thrust,
Extrusion stress is not less than 150MPa, thus realizes positive connection, the tilting moment bearing wind with this and wind
During machine runs, various vibrations act on down the transverse load causing blower fan pylon jointly.Meanwhile, manufacturing cost shows
Writing and reduce, it is processed and easy for installation, the processing request to bolt hole, does not has hinged bolts requirement that
Sample is high, and is applied between tower flanges define connection, does not has any relative displacement between tower flanges,
An entirety is gone into being riveted together.So, pylon is subject to dead load, dynamic loading, the toppling of wind
Moment and various vibration, all without causing connection to loosen, fundamentally solve bolt looseness problem, install and close
The blower fan pylon of lattice, service life of fan is in 20 years, it is not necessary to attachment bolt is carried out Inspection and maintenance.And,
Because being taper-face contact between the expansion sleeve of cinch bolt, the most easily disassembled.
Accompanying drawing explanation
Fig. 1 is the first embodiment of the non-maintaining coupling arrangement of large-scale wind driven generator pylon of the present utility model
Structural representation；
Fig. 2 is the second embodiment of the non-maintaining coupling arrangement of large-scale wind driven generator pylon of the present utility model
Structural representation；
Fig. 3 is mounting structure schematic diagram of the present utility model.
Detailed description of the invention
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, so that the skill of this area
Art personnel may be better understood this utility model and can be practiced, but illustrated embodiment is not as to this reality
With novel restriction.
Refer to Fig. 1, the non-maintaining coupling arrangement of large-scale wind driven generator pylon of the present utility model includes:
For bearing the connector 100 of transverse load, this connector is arranged in the bolt-connection combination of blower fan pylon.
In the bolt-connection of blower fan pylon, increase and can bear various vibrations in the tilting moment of wind and fan operation
The connector of the transverse load under common effect caused blower fan pylon, the expansion sleeve of this connector is band tapering
Structure, the pylon docking the highest use condition of bolt hole accurate to dimension can be met, can guarantee that again tower
Frame attachment bolt does not loosens, and degree of stability promotes 100%, reaches the purpose that blower fan pylon attachment bolt is non-maintaining.
Preferably, described connector 100 includes: an attachment bolt 110, outside described attachment bolt 110
Surface cover fills one or more groups cinch bolt with circular cone faying face.
Preferably, the section inclination angle on described composition surfaceIt is optimal using effect at 10-15 degree.
Preferably, described cinch bolt includes: be arranged at the inner expension cap 114 of attachment bolt outer layer and outer expansion set
113, inside and outside expansion set has high-strength high-elasticity high rigidity characteristic.
Preferably, it is coupled with extruding nut 119 at least one end of described attachment bolt 110, is screwed in
Extruding nut 119 cylindrical is clamp nut 117, and extruding nut 119 is high strength nut, clamp nut
Also it is high strength nut.
Preferably, setting space between clamp nut 117 and extruding nut 119, it is possible to effectively strengthen and make
Use performance.
Preferably, the inner side of described clamp nut 117 is provided with packing ring 115, strengthens fastening performance.
Preferably, the diameter of described packing ring is more than the diameter of clamp nut, it is possible to effectively strengthen serviceability.
As specific embodiment, rotary squeezing nut makes expansion set radially expand, until outer expansion set is tight
Tightly being expressed on hole wall, eliminate the gap between attachment bolt and hole wall, the complete swelling of expansion set fills up bolt hole,
And form certain magnitude of interference.The extrusion stress being not less than 150MPa is produced between outer expansion set and bolt hole wall,
Realize positive connection, in the tilting moment bearing wind with this and fan operation various vibrations jointly act on down right
The transverse load that blower fan pylon causes.Meanwhile, the spiral shell of the high-strength bolt that clamp nut and prior art use
Female effect is the same to bear axial force, and frictionally bears part transverse load simultaneously.This swelling spiral shell
Bolt is processed and easy for installation, the processing request to bolt hole, does not has as hinged bolts requirement high；Peace
During dress, first being unclamped by extruding nut, inside and outside expansion set reduces, and the most easily inserts in hole, then will extrude spiral shell
Female and clamp nut moment the most on request is tightened and i.e. be can reach swelling connection purpose.
Refer to Fig. 2, the non-maintaining coupling arrangement of large-scale wind driven generator pylon of the present utility model includes:
In the tilting moment bearing wind and fan operation, various vibrations jointly act on down and to cause blower fan pylon
The connector 300 of transverse load, this connector is arranged in the bolt-connection combination of blower fan pylon.At blower fan
In the bolt-connection of pylon, increasing the connector 300 that can bear transverse load, this connector is bipitch structure,
The use condition that pylon docking bolt hole accurate to dimension is the highest can be met, can guarantee that again pylon couples spiral shell
Bolt does not loosens, and degree of stability promotes 100%, reaches the purpose that blower fan pylon attachment bolt is non-maintaining.
Preferably, described connector 300 includes: an attachment bolt 310, outside described attachment bolt 310
Surface cover fills one or more groups cinch bolt with circular cone faying face.
Preferably, described cinch bolt includes: be arranged at the inner expension cap 314 of attachment bolt outer layer and outer expansion set
313, inside and outside expansion set has high-strength high-elasticity high rigidity characteristic.
Preferably, it is coupled with extruding nut 319 at least one end of described attachment bolt 310, is screwed in
Extruding nut 319 cylindrical is clamp nut 317, and extruding nut 319 is high strength nut, clamp nut
Also it is high strength nut.
Preferably, the inner side of described clamp nut 317 is provided with packing ring 315, strengthens fastening performance.
As specific embodiment, rotary squeezing nut makes expansion set radially expand, until outer expansion set is tight
Tightly being expressed on hole wall, eliminate the gap between attachment bolt and hole wall, the complete swelling of expansion set fills up bolt hole,
And form certain magnitude of interference.Create between outer expansion set and bolt hole wall be not less than 150MPa extruding should
Power, it is achieved positive connection, in the tilting moment bearing wind with this and fan operation, various vibrations act on jointly
Under transverse load that blower fan pylon is caused.Meanwhile, the high intensity that clamp nut and prior art use couples
The effect of the nut in bolt is the same to bear axial force, and frictionally bears part transverse load simultaneously.
This cinch bolt is processed and easy for installation, the processing request to bolt hole, does not has hinged bolts requirement
The highest；During installation, only need to be unclamped by extruding nut, inside and outside expansion set reduces, and just can the most easily insert hole
In, then extruding nut and clamp nut moment the most on request are tightened and i.e. be can reach swelling purpose.
In the present embodiment, along tower flanges center circle uniformly at intervals, particular number specification is with height for described connector
The quantity specifications of strength bolts is corresponding.
As another kind of embodiment, described connector along tower flanges center circle uniformly at intervals, whole center circle
Enclose whole uniform connector 300.
As another kind of embodiment, as it is shown on figure 3, the most described along described tower flanges center circle
Fitting 100,300 and attachment bolt 200.Described attachment bolt quantity be 100 or tens-150 very
To more, the quantity of described connector is 6-12, or more.Preferably, attachment bolt quantity is
120-129, the quantity of described connector is 8-12, the best results that fastening couples.
Preferably, described attachment bolt is the spiral shell of tensile strength sigma b >=1000, preferably more than 1274MPa
Bolt, fastening effect strengthens.
Preferably, described inner expension cap and outer expansion set are 60Si2Mn spring steel, strengthens fastening effect.
Preferably, described extruding nut and clamp nut are tensile strength sigma b >=1000, preferably more than 1274
MPa, fastening effect strengthens.Yield strength σ s >=900, it is preferable that more than the nut of 1176MPa, tightly
Gu effect strengthens.
When implementing, while connector bears transverse load, also bear axially load together with high-strength bolt
Lotus.Step: count and mark, reserves the position of connector, loads high-strength bolt.Twist with torque wrench
Tight high-strength bolt reaches the pre-fastening moment of requirement, until the gap between abutted flange all closes.Again
Connector is installed.Connector tightened by moment torque wrench on request.When reach set swelling moment values,
Stop tightening extruding nut, now form huge contact stress between extruding nut and expansion set, stop extruding
Nut occurs to loosen.Finally tighten clamp nut and reach the pre-fastening moment of regulation.After using connector, two kinds
The pretightning force of bolt is all far smaller than the pretightning force of existing high-strength bolt, and test shows, and only about 1.7%,
Thus greatly strengthen using effect.
Preferably, the high-strength bolt of the present embodiment be performance rate more than 8.8 grades, material be low-carbon alloy
Steel or medium carbon steel the bolt of thermally treated (quench, be tempered).The detection test of tension force: would be required to reach
The extrusion stress arrived, is scaled the torque value of torque wrench, and high-strength bolt quantity reduces, and provides cost savings,
The diameter dimension of connector, the strength grade of high-strength bolt reduce, dimensions reduces, and range of application is bright
Aobvious increasing.
This utility model is because adding connector, and high-strength bolt is primarily subjected to axial force, intrinsic pre-
Clamp force is greatly reduced, and attachment bolt dimensions can reduce, and accuracy class can reduce.Can also reduce
The quantity of high-strength bolt.The processing cost of flange, installation cost all decrease, and reduce manufacturing cost.
The most important thing is to realize the non-maintaining connection of blower fan pylon bolt.Cinch bolt and high-strength bolt are applied in combination,
Completely eliminate the mutual changing of the relative positions between abutted flange possible, and, define connection, pylon between flange
There is no any relative displacement between flange, with welded together, go into an entirety.So, pylon is subject to
Dead load, dynamic loading, the tilting moment of wind and various vibration all do not conform to cause connection to loosen, from all
Upper solution bolt looseness problem.The blower fan pylon of installation qualification, service life of fan is in 20 years, it is not necessary to distich
Connecting bolt carries out Inspection and maintenance.
Embodiment described above is only the preferred embodiment lifted by absolutely proving this utility model, this reality
It is not limited to this with novel protection domain.Those skilled in the art are made on the basis of this utility model
Equivalent substitute or conversion, all within protection domain of the present utility model.Protection domain of the present utility model
It is as the criterion with claims.
Claims (10)
1. the non-maintaining coupling arrangement of a large-scale wind driven generator pylon, it is characterised in that including: be used for
Bearing the connector of transverse load, this connector is arranged in the bolt-connection of blower fan pylon.
2. the non-maintaining coupling arrangement of large-scale wind driven generator pylon as claimed in claim 1, its feature exists
In, described connector includes: an attachment bolt, be set with outside described attachment bolt one or more groups with
The cinch bolt of circular cone faying face.
3. the non-maintaining coupling arrangement of large-scale wind driven generator pylon as claimed in claim 2, its feature exists
In, described cinch bolt includes: be arranged at the inner expension cap of attachment bolt outer layer and outer expansion set.
4. the non-maintaining coupling arrangement of large-scale wind driven generator pylon as claimed in claim 3, its feature exists
In, it is coupled with extruding nut at least one end of described attachment bolt, be screwed in extruding nut cylindrical is
Clamp nut.
5. the non-maintaining coupling arrangement of large-scale wind driven generator pylon as claimed in claim 2, its feature exists
In, described connector is along tower flanges center circle uniformly at intervals.
6. the non-maintaining coupling arrangement of large-scale wind driven generator pylon as claimed in claim 2, its feature exists
In, along the described the most described connector of tower flanges center circle and attachment bolt.
7. the non-maintaining coupling arrangement of large-scale wind driven generator pylon as claimed in claim 6, its feature exists
In, described attachment bolt quantity is 120-129, and the quantity of described connector is 8-12.
8. the non-maintaining coupling arrangement of large-scale wind driven generator pylon as claimed in claim 2, its feature exists
In, described cinch bolt is the bolt of tensile strength sigma b >=1274MPa.
9. the non-maintaining coupling arrangement of large-scale wind driven generator pylon as claimed in claim 3, its feature exists
In, described inner expension cap and outer expansion set are 60Si2Mn spring steel.
10. the non-maintaining coupling arrangement of large-scale wind driven generator pylon as claimed in claim 4, its feature
Being, described extruding nut and clamp nut are tensile strength sigma b >=1274MPa, yield strength σ s >=1176
The nut of MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620329278.8U CN205714591U (en) | 2016-04-20 | 2016-04-20 | A kind of non-maintaining coupling arrangement of large-scale wind driven generator pylon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620329278.8U CN205714591U (en) | 2016-04-20 | 2016-04-20 | A kind of non-maintaining coupling arrangement of large-scale wind driven generator pylon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205714591U true CN205714591U (en) | 2016-11-23 |
Family
ID=57297460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620329278.8U Expired - Fee Related CN205714591U (en) | 2016-04-20 | 2016-04-20 | A kind of non-maintaining coupling arrangement of large-scale wind driven generator pylon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205714591U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697243A (en) * | 2016-04-20 | 2016-06-22 | 王文玉 | Maintenance-free connecting device and method for large wind driven generator tower |
| CN113719418A (en) * | 2021-09-15 | 2021-11-30 | 曾繁英 | Ultrahigh tower for large wind turbine generator |
| US20220002990A1 (en) * | 2020-07-01 | 2022-01-06 | Siemens Gamesa Renewable Energy A/S | Stud system for connecting flanges |
-
2016
- 2016-04-20 CN CN201620329278.8U patent/CN205714591U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697243A (en) * | 2016-04-20 | 2016-06-22 | 王文玉 | Maintenance-free connecting device and method for large wind driven generator tower |
| US20220002990A1 (en) * | 2020-07-01 | 2022-01-06 | Siemens Gamesa Renewable Energy A/S | Stud system for connecting flanges |
| CN113719418A (en) * | 2021-09-15 | 2021-11-30 | 曾繁英 | Ultrahigh tower for large wind turbine generator |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20180420 |
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| CF01 | Termination of patent right due to non-payment of annual fee |