CN103912458A - Installing tool and wind aligning method for accurate wind aligning of wind indicator of wind generating set - Google Patents
Installing tool and wind aligning method for accurate wind aligning of wind indicator of wind generating set Download PDFInfo
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- CN103912458A CN103912458A CN201410178899.6A CN201410178899A CN103912458A CN 103912458 A CN103912458 A CN 103912458A CN 201410178899 A CN201410178899 A CN 201410178899A CN 103912458 A CN103912458 A CN 103912458A
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- wind
- wind vane
- mounting tool
- support
- generating set
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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
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Abstract
The invention discloses an installing tool and a wind aligning method for accurate wind aligning of a wind indicator of a wind generating set. The installing tool comprises a support detachably connected to the wind indicator, a guiding rod connected with the support, and a positioning device which is installed on the guiding rod and can slide along the guiding rod and position a perpendicular plane, and a positioning mark which can determine the pointing direction of the wind indicator and is parallel with the perpendicular plane is further arranged on the installing tool. The wind aligning method includes the steps that first, the installing tool is fixedly installed on the wind indicator, and the wind indicator is made to point to the positioning mark; then, by adjusting the position of the positioning device on the guiding rod and the direction of the wind indictor, the determined perpendicular plane of the positioning device is made to pass through a wheel hub and the central axis of a cabin, and accurate wind aligning on the wind indictor is completed. With the installing tool and the wind aligning method, accurate wind aligning of a fan can be achieved conveniently, and whether the wind indictor normally works or not can be detected regularly and fast. The installing tool is simple in structure, the using method is easy and convenient to achieve, and promotion and application are facilitated.
Description
Technical field
The present invention relates to technical field of wind power generation, particularly relate to the accurately mounting tool to wind and to wind method of a kind of wind power generating set wind vane.
Background technique
Along with the development of prior art, large-scale wind driven generator is widely used, but because some ins and outs are not valued by the people, directly affects the generated energy of unit.Be easy to out in the cold such as unit to wind problem: the first, inaccurate to the control of wind precision in installation process of wind vane.In assembling process, wind vane is installed according to installation code by lifting company, because installation code is simple and technician's individual differences, finally causes blower fan to differ greatly to wind problem.The second, after fan operation, wind vane lacks maintenance.After installing, put into operation at unit, all think that with significant problem wind vane is normal as long as no breaking down.The unit that above-mentioned reason causes not only can make blower fan working efficiency greatly reduce to wind is inaccurate, also can make yaw system occur the situation of unbalance loading simultaneously, brings certain harm to unit.The main cause that produces so the problems referred to above be do not have specialty to wind instrument and installation and measuring standard.
As can be seen here, in order to address the above problem, provide a kind of specialty wind instrument is carried out accurately, to wind, making the power curve of blower fan and load condition obtain good improvement, having become the current industry utmost point needs improved target.
Summary of the invention
What the technical problem to be solved in the present invention was to provide a kind of specialty can conveniently realize the accurately mounting tool to wind of wind power generating set wind vane.
Another technical problem that the present invention will solve is to provide a kind of accurately method to wind of wind power generating set wind vane that realizes quickly and easily of specialty.
For solving the problems of the technologies described above, the invention provides the accurately mounting tool to wind of a kind of wind power generating set wind vane, comprise for being removably connected to support, the guide rod being connected with support on wind vane and being arranged on the positioning device that can locate vertical plane on guide rod and that can slide along guide rod, on described mounting tool, be also provided with and can determine that wind vane points to the witness marker parallel with described vertical plane.
As further improvement, described positioning device is generating laser, and this generating laser can penetrate two bundle laser, when described support is connected on wind vane and when wind vane is arranged on wind generating set engine room, wherein beam of laser is perpendicular to the ground, and another beam of laser is parallel to the ground.
Further improve, also comprise the dial being connected with support, described witness marker is the scale on dial.
Further improve, described support comprises tubular structure and a securing means of the column periphery that is enclosed within wind vane that can folding, by described securing means, support is fixed on wind vane column.
Described securing means comprises bolt, nut and fastening sheet, bolt is through described tubular structure wall, nut and bolt are fixed on described tubular structure wall, fastening sheet is in described tubular structure and for being adjacent to and coordinating with the column of wind vane, by precession or back-out bolt, bolt compresses or loosens fastening sheet, realizes the fixing or dismounting of support.
Further improve, described support is provided with the half-ring dial matching with support periphery outward, and described witness marker is the scale on half-ring dial.
Further improve, also comprise an equilibrium block, this equilibrium block is arranged on one end away from described positioning device on described guide rod.
In addition, the present invention also provide a kind of wind power generating set wind vane accurately to wind mounting tool to wind method, comprise the steps:
The first step, is fixedly mounted on the support of described mounting tool on wind vane, makes wind vane point to the witness marker of described mounting tool;
Second step, position and the wind vane direction of the positioning device by adjusting described mounting tool on guide rod, makes the definite vertical plane of the positioning device of described mounting tool by wheel hub and medial axis, cabin, complete wind vane accurately to wind.
Adopt technique scheme, the present invention has the following advantages:
The present invention can realize easily blower fan accurately to wind, overcome wind vane in installation process to the inaccurate problem of wind precision control, optimized power of the assembling unit curve, improved unit generation efficiency and unit generation amount.
2. whether the present invention can regularly detect fast wind vane and normally work, in time wind vane is adjusted, as the instrument of Site Detection wind vane, has improved unit maintainability.
3. the present invention can school goes out the alignment error that the technology cognitive diversity of different installation personnels brings.
4. the present invention is simple in structure, and using method is easy, is beneficial to and applies.
Accompanying drawing explanation
Above-mentioned is only the general introduction of technical solution of the present invention, and in order to better understand technological means of the present invention, below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail.
Fig. 1 is the schematic diagram that impeller departs from wind direction.
Fig. 2 is the structural representation that wind power generating set is installed wind vane.
Fig. 3 is the structural representation of wind vane.
Fig. 4 is that wind vane is to wind mode schematic diagram.
Fig. 5 is wind vane dial plate indication schematic diagram.
Fig. 6 is the precisely structural representation to wind mounting tool of wind power generating set wind vane of the present invention.
Fig. 7 be the A-A shown in Fig. 6 to sectional view.
Fig. 8 is the wind speed-power of wind power generating set.
Embodiment
Wind power generating set, to wind, refers to that wind direction is aimed in the medial axis of wind power generating set impeller (forward), and now blower fan can absorb wind energy to greatest extent.
E＝1/2[ρ×t×(s×cosθ)×υ
3]-------①
In formula: ρ--air density (kg/m
2); υ--wind speed (meter per second); The t--time (second); S--section area (rice
2); θ--the angle of impeller medial axis and wind direction.
From above formula, when θ value is 0 °, the wind energy E maximum of generation.Impeller shown in Fig. 1 departs from the situation of wind direction, and θ value is not 0 ° and has certain angle, the wind energy E reduction of generation.
Shown in Fig. 5, wind power generating set comprises pylon 4, cabin 6 and is arranged on base 5, generator 8, gear-box 7, wheel hub 2 and the blade 1 in cabin 6 and is arranged on the wind vane 3 of 6 tops, cabin away from wheel hub 2 directions.Wind vane 3 comprises head 31, empennage 32, horizon bar 33 and column 34.General wind vane 3 has two kinds to wind mode, one be 0 ° of wind vane to wind, the head 31 of wind vane is that 0 scale points to impeller direction, the sensing of wind vane is parallel with medial axis, cabin with impeller; Another kind be 180 ° of wind vanes to wind, the head 31 of wind vane is that 180 scales point to impeller directions, the sensing of wind vane is parallel with medial axis, cabin with impeller.
With reference to shown in Fig. 6 to Fig. 7, the wind power generating set wind vane of the present invention accurately structure of the mounting tool to wind comprises generating laser 14, guide rod 13, dial 12, support 11 and equilibrium block 15.
Generating laser 14 includes two laser beam emitting heads, launches respectively the mutual meet of two bundles vertical laser G and F, and earthward, laser F directive impeller direction is also parallel to the ground for laser G vertical sand shooting.When laser G vertical sand shooting is to medial axis, cabin, and when laser F directive wheel hub medial axis, what this two bundles laser had been determined cabin vertically divides plane equally: this plane vertical ground, through the medial axis of impeller, is divided into two halves by cabin.When this vertically divides plane equally when parallel with wind direction, wind power generating set just to wind direction or just leeward to.Generating laser 14 can slide on guide rod 13, so as laser G vertical sand shooting to the medial axis in cabin, be beneficial to determine cabin vertically divide plane equally.Guide rod 13 is that quality is light, hardness is large, and the cylindrical body that is difficult for being worn, as the slide guide of generating laser 14.Guide rod 13 is connected with support 11.The support that support 11 is whole frock, and be removably connected with the column 34 of wind vane, its structure matches with column 34, can be two semicircle tubular structures that separate, be enclosed within column 34 peripheries, its place's active link of joining mutually, by a securing means, support is fixed on column again, its securing means is the push structure being coordinated by bolt and nut, bolt is through semicircle tubular structure center hole, there is the nut matching with bolt in central hole, nut is fixedly connected with semicircle tubular structure, in semicircle tubular structure, have one to paste friction tight fastening sheet with column 34, by precession bolt, bolt compresses fastening sheet is fixed on column 34 support 11, on the contrary can removal bracket.Dial 12 is connected with support 11, and can match and be arranged on support 11 peripheries with above-mentioned semicircle tubular structure, for the specific scale of precise alignment wind vane, on it, can be only that a witness marker also can indicate accurate angle value.Equilibrium block 15 is arranged on guide rod 13 away from one end of generating laser 14, is convenient to the use of frock.
Principle of the present invention is exactly to utilize the character of parallel lines (in same plane, non-intersect two straight lines that do not overlap, cross straight line and have unique straight line and known straight line parallel more outward), pre-determine plane or a line paralleling with the sensing of wind vane, by adjusting that the medial axis in predetermined plane or line and wheel hub and cabin overlaps or parallel, thereby the sensing that realizes wind vane is parallel with the medial axis in wheel hub and cabin, finally reach wind vane accurately to wind.
The present invention to wind process is in wind vane installation process: the first step, the support of mounting tool is fixedly mounted on wind vane, and make wind vane the wind utmost point (the N utmost point or the S utmost point) is alignd with dial 0 scale of mounting tool.Second step, is arranged on wind vane above the survey wind support in cabin, and guarantees that wind vane can finely tune wind angle.The 3rd step, generating laser in opening installation frock, by adjusting position and the fine setting wind vane direction of generating laser on guide rod, make medial axis, beam of laser directive cabin perpendicular to the ground, another beam of laser directive impeller direction parallel with medial axis, cabin with wheel hub, realize wind vane accurately to wind, remove and install frock.
The present invention is in the time regularly detecting wind vane, and it comprises the above-mentioned first step and the 3rd step to wind process, can complete the regular detection to wind vane.
Technical solution of the present invention can be brought following beneficial effect:
1. improve unit generation efficiency and unit generation amount because in the time that wind speed is less than rated wind speed and spends, because impeller does not absorb wind energy to the full extent, the energy of its loss is relevant with the angle of vane rotary plane and wind direction.By improve direction sign to wind precision, can increase substantially unit generation amount by less cost at this stage.
2. optimize the power curve of power of the assembling unit curve unit as shown in Figure 8, the general investigation index as unit performance.But unit will definitely not make wind to prolong after the working curve entirety of unit.So improve unit to wind precision, be conducive to the optimization of power curve.
3. as the instrument of Site Detection wind vane, improve unit maintainability because unit can not detect the fault of wind vane, therefore easily there is the unit lower work of nonserviceabling for a long time, cause the loss of electric weight.Simply test at the scene by the present invention, judge that whether wind vane is normal, and change in time.
Certainly, in the present embodiment, the effect of generating laser is vertically to divide plane equally for what locate cabin, and the positioning device that can accurately be located this plane by other replaces.Dial can be able to be determined that wind vane points to the vertical plane parallel witness marker definite with positioning device and replaces.
The above; it is only preferred embodiment of the present invention; not the present invention is done to any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection scope of the present invention.
Claims (8)
1. the accurately mounting tool to wind of a wind power generating set wind vane, it is characterized in that: comprise for being removably connected to support, the guide rod being connected with support on wind vane and being arranged on the positioning device that can locate vertical plane on guide rod and that can slide along guide rod, on described mounting tool, be also provided with and can determine that wind vane points to the witness marker parallel with described vertical plane.
2. the accurately mounting tool to wind of wind power generating set wind vane according to claim 1, it is characterized in that, described positioning device is generating laser, this generating laser can penetrate two bundle laser, when described support is connected on wind vane and when wind vane is arranged on wind generating set engine room, wherein beam of laser is perpendicular to the ground, and another beam of laser is parallel to the ground.
3. the accurately mounting tool to wind of wind power generating set wind vane according to claim 1, is characterized in that, also comprises the dial being connected with support, and described witness marker is the scale on dial.
4. the accurately mounting tool to wind of wind power generating set wind vane according to claim 1, it is characterized in that, described support comprises tubular structure and a securing means of the column periphery that is enclosed within wind vane that can folding, by described securing means, support is fixed on wind vane column.
5. the accurately mounting tool to wind of wind power generating set wind vane according to claim 4, it is characterized in that, described securing means comprises bolt, nut and fastening sheet, bolt is through described tubular structure wall, nut and bolt are fixed on described tubular structure wall, and fastening sheet is in described tubular structure and for being adjacent to and coordinating with the column of wind vane, by precession or back-out bolt, bolt compresses or loosens fastening sheet, realizes the fixing or dismounting of support.
6. the accurately mounting tool to wind of wind power generating set wind vane according to claim 4, is characterized in that, described support is provided with the half-ring dial matching with support periphery outward, and described witness marker is the scale on half-ring dial.
7. the accurately mounting tool to wind of wind power generating set wind vane according to claim 1, is characterized in that, also comprises an equilibrium block, and this equilibrium block is arranged on one end away from described positioning device on described guide rod.
8. the wind power generating set wind vane as described in as arbitrary in claim 1 to 7 accurately to wind mounting tool to wind method, it is characterized in that, comprise the steps:
The first step, is fixedly mounted on the support of described mounting tool on wind vane, makes wind vane point to the witness marker of described mounting tool;
Second step, position and the wind vane direction of the positioning device by adjusting described mounting tool on guide rod, makes the definite vertical plane of the positioning device of described mounting tool by wheel hub and medial axis, cabin, complete wind vane accurately to wind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410178899.6A CN103912458B (en) | 2014-04-30 | 2014-04-30 | Installing tool and wind aligning method for accurate wind aligning of wind indicator of wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410178899.6A CN103912458B (en) | 2014-04-30 | 2014-04-30 | Installing tool and wind aligning method for accurate wind aligning of wind indicator of wind generating set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103912458A true CN103912458A (en) | 2014-07-09 |
| CN103912458B CN103912458B (en) | 2017-04-26 |
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ID=51038390
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410178899.6A Active CN103912458B (en) | 2014-04-30 | 2014-04-30 | Installing tool and wind aligning method for accurate wind aligning of wind indicator of wind generating set |
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| CN (1) | CN103912458B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114258A (en) * | 2015-08-21 | 2015-12-02 | 东方电气风电有限公司 | Installing and aligning method and device for anemorumbometer of wind driven generator |
| CN108072772A (en) * | 2016-11-14 | 2018-05-25 | 北京国电思达科技有限公司 | A kind of wind vane N bit corrections frock and its application method |
| CN108132131A (en) * | 2017-12-22 | 2018-06-08 | 郑州大学 | The device and method of the structures under wind experiment zero degree wind angle of attack is determined using garage's sailing |
| CN110630437A (en) * | 2018-06-24 | 2019-12-31 | 甘肃慧风节能有限公司 | Wind alignment precision calibration device and calibration method for wind driven generator |
| CN112145345A (en) * | 2020-08-07 | 2020-12-29 | 华电电力科学研究院有限公司 | Wind alignment device and method for wind turbine generator |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001050136A1 (en) * | 1999-12-30 | 2001-07-12 | Thales Avionics S.A. | Device for angular positioning of a vaned angle-of-attack sensor on an aircraft wall |
| CN201074567Y (en) * | 2007-08-27 | 2008-06-18 | 浙江运达风力发电工程有限公司 | Yawing device of wind generator set |
| CN201837638U (en) * | 2010-09-03 | 2011-05-18 | 孟祥涛 | Light beam wind vane |
| CN102095895A (en) * | 2010-12-14 | 2011-06-15 | 边文超 | Calibration system of wind direction sensor |
| CN202956391U (en) * | 2012-09-29 | 2013-05-29 | 东方电气集团东方汽轮机有限公司 | Wind vane zeroing device of wind turbine generator |
| CN202994823U (en) * | 2012-12-09 | 2013-06-12 | 湖北文理学院 | A simple wind direction gauge |
| CN203156329U (en) * | 2013-03-15 | 2013-08-28 | 东方电气集团东方汽轮机有限公司 | Wind indicator centering device of wind generating set |
| CN203519646U (en) * | 2013-08-21 | 2014-04-02 | 北京市气象探测中心 | Laser positioning calibration device for wind direction sensor |
| CN203918417U (en) * | 2014-04-30 | 2014-11-05 | 北京天源科创风电技术有限责任公司 | The accurately mounting tool to wind of a kind of wind power generating set wind vane |
-
2014
- 2014-04-30 CN CN201410178899.6A patent/CN103912458B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001050136A1 (en) * | 1999-12-30 | 2001-07-12 | Thales Avionics S.A. | Device for angular positioning of a vaned angle-of-attack sensor on an aircraft wall |
| CN201074567Y (en) * | 2007-08-27 | 2008-06-18 | 浙江运达风力发电工程有限公司 | Yawing device of wind generator set |
| CN201837638U (en) * | 2010-09-03 | 2011-05-18 | 孟祥涛 | Light beam wind vane |
| CN102095895A (en) * | 2010-12-14 | 2011-06-15 | 边文超 | Calibration system of wind direction sensor |
| CN202956391U (en) * | 2012-09-29 | 2013-05-29 | 东方电气集团东方汽轮机有限公司 | Wind vane zeroing device of wind turbine generator |
| CN202994823U (en) * | 2012-12-09 | 2013-06-12 | 湖北文理学院 | A simple wind direction gauge |
| CN203156329U (en) * | 2013-03-15 | 2013-08-28 | 东方电气集团东方汽轮机有限公司 | Wind indicator centering device of wind generating set |
| CN203519646U (en) * | 2013-08-21 | 2014-04-02 | 北京市气象探测中心 | Laser positioning calibration device for wind direction sensor |
| CN203918417U (en) * | 2014-04-30 | 2014-11-05 | 北京天源科创风电技术有限责任公司 | The accurately mounting tool to wind of a kind of wind power generating set wind vane |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114258A (en) * | 2015-08-21 | 2015-12-02 | 东方电气风电有限公司 | Installing and aligning method and device for anemorumbometer of wind driven generator |
| CN108072772A (en) * | 2016-11-14 | 2018-05-25 | 北京国电思达科技有限公司 | A kind of wind vane N bit corrections frock and its application method |
| CN108132131A (en) * | 2017-12-22 | 2018-06-08 | 郑州大学 | The device and method of the structures under wind experiment zero degree wind angle of attack is determined using garage's sailing |
| CN110630437A (en) * | 2018-06-24 | 2019-12-31 | 甘肃慧风节能有限公司 | Wind alignment precision calibration device and calibration method for wind driven generator |
| CN112145345A (en) * | 2020-08-07 | 2020-12-29 | 华电电力科学研究院有限公司 | Wind alignment device and method for wind turbine generator |
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| CN103912458B (en) | 2017-04-26 |
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