CN106405415B - Unidirectional unbalance loading device of wind generating set - Google Patents
Unidirectional unbalance loading device of wind generating set Download PDFInfo
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- CN106405415B CN106405415B CN201610735176.0A CN201610735176A CN106405415B CN 106405415 B CN106405415 B CN 106405415B CN 201610735176 A CN201610735176 A CN 201610735176A CN 106405415 B CN106405415 B CN 106405415B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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Abstract
The invention discloses a unidirectional unbalance loading device of a wind generating set, which comprises a loading rotating shaft, wherein one end of the loading rotating shaft is connected with an input shaft of the wind generating set, a bearing seat is sleeved on the loading rotating shaft, a sliding bearing is arranged between the bearing seat and the loading rotating shaft, and a loading assembly for applying tension or thrust to the bearing seat is arranged on one side of the bearing seat. The unidirectional unbalance loading device of the wind generating set has the advantages of simple structure, convenience in loading, high precision and the like.
Description
Technical Field
The invention mainly relates to the technical field of wind power generation, in particular to a unidirectional unbalance loading device of a wind generating set.
Background
Wind energy has been vigorously developed as a novel energy source by countries in the world, and a wind generating set is a typical device for utilizing wind energy, is a complex mechanical and electrical integrated system, is large in size and high in installation and maintenance cost, and a transmission system of the wind generating set is a subsystem with the highest failure rate.
With the continuous improvement of the power grade of a fan and the development of offshore wind power, in order to know performance defects of a wind turbine before batch installation, a newly developed prototype of the wind turbine is required to be actually operated in a test wind field, and the process needs to consume great manpower and material resources and comprises renting a tester position, hoisting and disassembling the prototype, maintaining the fan and keeping a tester for a long time.
In the current test process of the wind generating set, only the simulated wind wheel rotating torque can be provided as the load, or a complex and expensive multidirectional load loading system is provided, and the two types of equipment are complex and the simulation of the real working condition is not accurate. In addition, only the transmitted torque is generally loaded during testing, and the unbalance load is concerned little, so that the main shaft is influenced by the unbalance load to cause a large amount of oil leakage when the main shaft runs in an actual wind field.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems in the prior art, the invention provides the unidirectional unbalance loading device of the wind generating set, which has a simple structure and is convenient to load.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a unidirectional unbalance loading device of a wind generating set comprises a loading rotating shaft, one end of the loading rotating shaft is connected with an input shaft of the wind generating set, a bearing seat is sleeved on the loading rotating shaft, a sliding bearing is arranged between the bearing seat and the loading rotating shaft, and a loading assembly used for applying tension or thrust to the bearing seat is arranged on one side of the bearing seat.
As a further improvement of the above technical solution:
the loading assembly comprises a pressure cylinder, and the movable end of the pressure cylinder is connected with the bearing seat.
The pressure cylinder is a hydraulic cylinder or an air cylinder.
The axis of the telescopic rod and the central points of the bearing seat and the sliding bearing are positioned on the same vertical line.
The loading assembly further comprises a pressurizing pump, a pressurizing valve and a pressure relief valve, and the pressurizing pump is connected with the pressure cylinder through the pressurizing valve and the pressure relief valve respectively.
The pressure cylinder is fixedly arranged on a basic bracket.
The loading assembly is of a threaded mechanical structure or a roller screw structure.
Compared with the prior art, the invention has the advantages that:
according to the unidirectional unbalance loading device of the wind generating set, the calculated load of the simulation result is applied to the rotating shaft through the loading assembly, and the response of a transmission system of a fan, particularly a main shaft system is measured and analyzed, so that the deformation of a main shaft under various working conditions and the sealing condition of the main shaft can be quickly simulated in a laboratory state, the defects in the technology can be solved in advance, and the installation quality of the main shaft system of the wind generating set is ensured; in addition, the loading device has the advantages of simple structure, simple and convenient control and high loading precision.
Drawings
FIG. 1 is a diagram of an embodiment of the present invention in a specific application.
FIG. 2 is a control schematic of the loading assembly of the present invention.
The reference numbers in the figures denote: 1. a base support; 2. loading the rotating shaft; 3. a bearing seat; 4. a sliding bearing; 5. loading the component; 51. a pressure cylinder; 52. a pressure pump; 53. a pressurization valve; 54. and (4) releasing the valve.
Detailed Description
The invention is further described below with reference to the figures and the specific embodiments of the description.
As shown in fig. 1 and fig. 2, the unidirectional unbalance loading device of the wind generating set of the present embodiment includes a loading rotating shaft 2, one end of the loading rotating shaft 2 is connected to an input shaft of the wind generating set, a bearing seat 3 is sleeved on the loading rotating shaft 2, a sliding bearing 4 is disposed between the bearing seat 3 and the loading rotating shaft 2, and a loading assembly 5 for applying a pulling force or a pushing force to the bearing seat 3 is disposed on one side of the bearing seat 3. According to the unidirectional unbalance loading device of the wind generating set, the calculated load of the simulation result is applied to the rotating shaft through the loading assembly 5, and the response of a transmission system of a fan, particularly a main shaft system is measured and analyzed, so that the deformation of a main shaft under various working conditions and the sealing condition of the main shaft can be quickly simulated in a laboratory state, the defects in the technology can be solved in advance, and the installation quality of the main shaft system of the wind generating set is ensured; in addition, the loading device has the advantages of simple structure, simple and convenient control and high loading precision.
In this embodiment, one end of the loading revolving shaft 2 is connected to the input shaft of the generator set through the adapter flange, and when the wind turbine generator set rotates, the rotation can be transmitted to the loading revolving shaft 2. In addition, the loading rotary shaft 2 and the sliding bearing 4 are in reasonable clearance fit, so that the loading rotary shaft 2 can freely rotate without being influenced by the sliding bearing 4 in the loading process.
In this embodiment, the loading assembly 5 includes a pressure cylinder 51 and an expansion link installed in the pressure cylinder 51, wherein the pressure cylinder 51 is fixed on a base bracket 1, the movable end of the expansion link is connected with the bearing seat 3, and the base bracket 1 mainly functions to provide a reaction force and keep the stability of the device in a non-working state; the axis of the telescopic rod and the central points of the bearing seat 3 and the sliding bearing 4 are positioned on the same vertical line, so that the loading precision is ensured. Wherein the pressure cylinder 51 is a hydraulic cylinder or an air cylinder, which can provide a pulling force or a pushing force. In other embodiments, the loading assembly 5 may also provide a load for a threaded machine or a roller screw, which are currently common.
As shown in fig. 2, in the present embodiment, the charging assembly 5 further includes a pressurizing pump 52, a pressurizing valve 53, and a relief valve 54, and the pressurizing pump 52 is connected to the pressure cylinder 51 through the pressurizing valve 53 and the relief valve 54, respectively. In the experiment, the pressurizing pump 52 is started to pressurize the pressure cylinder 51, and the change of the loading force of the loading assembly 5 is controlled by the opening and closing of the pressurizing valve 53; during pressure relief, the change of the loading force is realized by controlling the opening and closing of the pressure relief valve 54; in the normal control, the magnitude of opening and closing of the pressure increasing valve 53 and the pressure reducing valve 54 is adjusted to change the charging force.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (3)
1. The unidirectional unbalance loading device of the wind generating set is characterized by comprising a loading rotating shaft (2), wherein one end of the loading rotating shaft (2) is connected with an input shaft of the wind generating set, a bearing seat (3) is sleeved on the loading rotating shaft (2), a sliding bearing (4) is arranged between the bearing seat (3) and the loading rotating shaft (2), and a loading assembly (5) for applying tension or thrust to the bearing seat (3) is arranged on one side of the bearing seat (3);
the loading assembly (5) comprises a pressure cylinder (51), and the movable end of the pressure cylinder (51) is connected with the bearing seat (3);
the loading assembly (5) further comprises a pressurizing pump (52), a pressurizing valve (53) and a pressure relief valve (54), wherein the pressurizing pump (52) is connected with the pressure cylinder (51) through the pressurizing valve (53) and the pressure relief valve (54) respectively;
the loading rotating shaft (2) is in clearance fit with the sliding bearing (4) so as to ensure that the loading rotating shaft (2) can rotate freely without being influenced by the sliding bearing (4) in the loading process;
the axis of the pressure cylinder (51) and the central points of the bearing seat (3) and the sliding bearing (4) are positioned on the same vertical line;
the pressure cylinder (51) is fixedly arranged on a basic bracket (1).
2. The unidirectional unbalance loading device of the wind generating set according to claim 1, characterized in that the pressure cylinder (51) is a hydraulic cylinder or an air cylinder.
3. The unidirectional unbalance loading device of the wind generating set according to claim 1 or 2, characterized in that the loading assembly (5) is a screw mechanism or a roller screw structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610735176.0A CN106405415B (en) | 2016-08-26 | 2016-08-26 | Unidirectional unbalance loading device of wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610735176.0A CN106405415B (en) | 2016-08-26 | 2016-08-26 | Unidirectional unbalance loading device of wind generating set |
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| Publication Number | Publication Date |
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| CN106405415A CN106405415A (en) | 2017-02-15 |
| CN106405415B true CN106405415B (en) | 2020-02-18 |
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| CN201610735176.0A Active CN106405415B (en) | 2016-08-26 | 2016-08-26 | Unidirectional unbalance loading device of wind generating set |
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| JP2001251755A (en) * | 2000-03-07 | 2001-09-14 | Nishishiba Electric Co Ltd | Detector for single open phase of synchronous generator |
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| CN201680969U (en) * | 2010-05-14 | 2010-12-22 | 华锐风电科技(集团)股份有限公司 | Load loading device of complete machine test stand of high-power wind turbine generator set |
| CN201697797U (en) * | 2010-05-25 | 2011-01-05 | 沈阳华人风电科技有限公司 | Test-bed for electric pitch-controlled system of wind generating set |
| CN103091103B (en) * | 2011-10-27 | 2015-06-24 | 华锐风电科技(集团)股份有限公司 | Test system and test method of wind turbine generator main shaft bearing |
| CN102636367B (en) * | 2012-04-23 | 2014-08-27 | 浙江大学 | Multi-degree-of-freedom dynamic loading device for simulating wind power and ocean current load |
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| CN201680966U (en) * | 2010-05-14 | 2010-12-22 | 华锐风电科技(集团)股份有限公司 | Test bench commonly used by high-power wind generating set |
| CN201886130U (en) * | 2010-11-26 | 2011-06-29 | 华锐风电科技(集团)股份有限公司 | Wind generating set testing device and system |
| CN103134682A (en) * | 2011-11-24 | 2013-06-05 | 华锐风电科技(集团)股份有限公司 | Experiment table of wind generating set |
| CN203772468U (en) * | 2014-01-24 | 2014-08-13 | 中国船舶重工集团公司第七0四研究所 | Testing motor for realizing measurement of outer ring excitation force of rotor and bearing |
| CN105185206A (en) * | 2015-09-25 | 2015-12-23 | 南车株洲电力机车研究所有限公司 | Wind generating set wind load simulator |
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| CN106405415A (en) | 2017-02-15 |
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