CN214621667U - Non-contact variable frequency loading system suitable for complicated load simulation of offshore wind turbine - Google Patents
Non-contact variable frequency loading system suitable for complicated load simulation of offshore wind turbine Download PDFInfo
- Publication number
- CN214621667U CN214621667U CN202120340160.6U CN202120340160U CN214621667U CN 214621667 U CN214621667 U CN 214621667U CN 202120340160 U CN202120340160 U CN 202120340160U CN 214621667 U CN214621667 U CN 214621667U
- Authority
- CN
- China
- Prior art keywords
- water
- tank
- loading system
- wind turbine
- wave
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Wind Motors (AREA)
Abstract
The utility model discloses a non-contact variable frequency loading system suitable for complicated load simulation of an offshore wind turbine, which comprises a model groove, a wave generator, a submersible pump, a fan and an electromagnetic loading system; the utility model designs the function of simulating wind load of the electromagnetic variable frequency control system based on the non-contact loading principle, and realizes the complete separation of the load applying system and the fan structure; adopting a wave making machine to move up and down to generate waves with different wavelengths and wave heights; the submersible pump is adopted to form pressure difference and discharge water into the water outlet pool, the valve at the bottom of the model box is opened, circulating water flow is formed in the model, and the effect of tide on the fan foundation can be simulated. The system can independently simulate wind, wave and tidal current loads and can also carry out synchronous or asynchronous simulation on the coupling working condition.
Description
Technical Field
The utility model relates to a fields such as ground mechanics, structural dynamics, ocean dynamics, coastal waters wind-powered electricity generation engineering, concretely relates to non-contact frequency conversion loading system suitable for the simulation of the complicated load of offshore wind turbine.
Background
Vibration and control research of offshore wind turbines under the action of wind, waves and tides are of great importance. However, large flume tests can only simulate waves well because wind tunnel tests are expensive. At present, the test systems capable of simulating the combined action of wind, wave and tide are fewer, the guy wire loading of the servo motor proposed by part of researches belongs to contact type simulation, and the mode can only well output a stable sine wave and is different from the non-stable characteristic of actual pulsating wind. Furthermore, the simulation of tidal currents often requires the action of large flows of water, which is uneconomical under the conditions of the test.
Based on the above situation, the utility model provides a non-contact frequency conversion loading system suitable for the simulation of the complicated load of offshore wind turbine can effectively solve above problem.
SUMMERY OF THE UTILITY MODEL
To above-mentioned key difficult problem, the utility model provides a non-contact frequency conversion loading system suitable for the simulation of the complicated load of offshore wind turbine. The system constructs a loading simulation system of the offshore wind turbine under complex loads such as pulsating wind, waves, tidal currents and the like, can realize independent and coupled loading, can realize long-term non-contact variable frequency loading, and meets the simulation of various complex working conditions of the offshore wind turbine.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
the utility model provides a non-contact frequency conversion loading system suitable for complicated load simulation of offshore wind turbine, include:
the water tank on the left side and the water tank on the right side are communicated through a connecting channel arranged at the bottom of the model groove;
the wave maker is arranged close to the first water passing tank, and waves with different wave heights and wave lengths are generated by adjusting the amplitude and the frequency of the vertical operation of the wave maker;
the submersible pump is arranged close to the second water communication tank and used for simulating different flow directions of tide and realizing water flow positive circulation or reverse circulation in the system;
the fan is arranged between the first water communicating tank and the second water communicating tank; and
the electromagnetic loading system is arranged at a certain distance from the fan and used for simulating unsteady characteristics of pulsating wind under a non-contact condition.
The utility model discloses the simulation of trend effect is through the simulation of inside realization circulation rivers that realizes at the model, and the circulation of rivers is passed through the immersible pump and is produced the poor realization of flood peak, and the control of trend velocity of flow is realized through adjusting valve size change system total flow.
The utility model discloses the quantity of immersible pump calculates according to operating condition and reachs, can adopt more powerful immersible pump when the velocity of flow is great.
The utility model discloses can simulate the different flow direction of trend, rise when needs simulation, the difference of trend direction when moving back to tide, change variable immersible pump delivery direction, the adjustment water inlet is the delivery port, realizes rivers reverse circulation in system inside.
The utility model discloses the non-contact simulation of wind load is through realizing at electromagnetism loading system, and voltage and frequency through adjusting alternating current power supply produce different alternating electromagnetic field, and then simulate the unsteady state horizontal cycle load that different pulsating wind formed.
The utility model discloses wind, wave, trend load can singly be applyed, and also the coupling is applyed, and each loading device all has single module control, and load single control module can be opened and close at arbitrary moment.
Preferably, the wave generator comprises a wave generating plate, a connecting arm and a servo motor, and the connecting arm can be driven by the servo motor to move up and down, so that the wave generating plate with a certain horizontal included angle generates waves.
Preferably, a powerful magnet is arranged in the cabin of the fan, and a variable-frequency electromagnetic loading device of an electromagnetic loading system is arranged at a position away from the powerful magnet by a certain distance and acts on the powerful magnet, so that non-contact variable-frequency loading is realized.
It is further preferred that the wind turbine further comprises blades and a base support structure.
The foundation support structure comprises a fan tower drum and a fan foundation, the fan blades cannot be simplified by adopting a centralized mass method, and the fan foundation is the same as the actual fan foundation and can adopt a single pile, a pile group or a suction bucket type foundation.
Further preferably, the electromagnetic loading system further comprises an alternating power supply and a fixed base for supplying power to the variable frequency electromagnetic loading device.
Preferably, flow control valves are arranged at the joints of the first water through tank and the second water through tank and the connecting channel respectively.
Further preferably, a flow meter is provided in the flow control valve.
Preferably, the first and second water passing tanks are respectively provided with a wave dissipation plate at the inner side thereof to eliminate the reflection effect of waves generated by the wave generator.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the system realizes the simulation of wind load, waves and tidal currents, and each loading device is controlled by a single module. The electromagnetic loading system is adopted for simulating the wind load, so that the loading system is completely separated from the fan structure, the constraint effect of the loading system on the fan vibration is avoided, and the unsteady characteristic of pulsating wind can be simulated under the non-contact condition. Secondly, the simulation system can realize internal water flow circulation, and when the tide action needs to be simulated, the bottom control valve is opened, and the tidal current flow rate is controlled by accurately controlling the flow of the circulating water flow. The system can independently simulate wind, wave and tidal current loads and can also carry out synchronous or asynchronous simulation on the coupling working condition.
Drawings
Fig. 1 is an overall schematic diagram of the complex load simulation system of the offshore wind turbine of the present invention;
FIG. 2 is a top view of the marine environment model groove of the present invention;
fig. 3 is a schematic diagram of a non-contact variable frequency loading system of the present invention;
fig. 4 is a schematic view of the circulation water flow rate control device of the present invention.
Reference numerals: 1-a model groove, 2-a first water through tank, 3-a wave elimination plate, 4-a wave making machine, 5-transparent glass, 6-simulated seawater and ocean strata, 7-a blade, 8-a cabin, 9-a basic supporting structure, 10-a variable frequency electromagnetic loading device, 11-a submersible pump, 12-a second water through tank, 13-a flow control valve, 14-a connecting arm, 15-a wave making plate, 16-a fan base plane position, 17-a powerful magnet, 18-a fixed base, 19-an alternating power supply, 20-a flow meter and 21-a connecting channel.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the following description of the preferred embodiments of the present invention is given with reference to the accompanying examples, but it should be understood that the drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The present invention will be further described with reference to the accompanying drawings 1-4 and examples, but the invention is not limited thereto.
As shown in fig. 1, a first water through tank 2 and a second water through tank 12 are respectively arranged at the left side and the right side of a model groove 1, and the water through tanks at the two sides are communicated through a connecting channel 21 arranged at the bottom of the model groove 1; the first water tank 2 and the second water tank 12 can be used as a water inlet tank and a water outlet tank, the water inlet tank and the water outlet tank are determined according to the direction of the tide, the first water tank 2 is used as a water inlet tank, the second water tank 12 is used as a water outlet tank, and the water level of the water outlet tank is slightly higher than that of the water inlet tank during the circulation of the water flow. The wave dissipation plates 3 are respectively arranged on the inner sides of the first water through tank 2 and the second water through tank 12 to eliminate the reflection effect of waves generated by the wave generator 4, and avoid the phenomenon that the test environment is out of control due to the superposition of the waves generated in the model groove 1. The front side and the rear side of the model groove 1 are made of transparent glass 5, the conditions of simulated seawater and ocean strata 6 can be well observed, and the transparent glass 5 can be toughened glass or organic glass.
As shown in fig. 2, the wave generator 4 drives the connecting arm 14 to move up and down through the servo motor, and generates waves through the wave generating plate 15 which forms a certain angle with the horizontal plane. The plane position 16 of the wind turbine foundation can be a single pile or a pile group form according to the actual wind turbine foundation, and the number of the submersible pumps 11 is selected according to the calculated tidal current flow rate and flow.
As shown in fig. 1 and 3, the wind turbine comprises blades 7, a nacelle 8 and a base support structure 9 (tower and foundation). The electromagnetic loading system comprises a variable frequency electromagnetic loading device 10, an alternating power supply 19 and a fixed base 18. Wherein, strong magnet 17 and variable frequency electromagnetic loading device 10 are placed in the cabin 8 to act, and the variable frequency electromagnetic loading device 10 is firmly connected with the fixed base 18. The variable frequency electromagnetic loading device 10 is connected with an alternating power supply 19, and controls an alternating electromagnetic field by adjusting the voltage and the frequency of the alternating power supply 19, so that non-contact variable frequency loading is realized.
As shown in fig. 4, flow control valves 13 are provided at the joints of the first and second water tanks 2 and 12 with the connecting passages 21, respectively, and a flow meter 20 is disposed on the flow control valves 13. The water flow of the second water through tank 12 (water outlet tank) enters the bottom of the model groove 1 through the flow control valve 13, the flow is accurately controlled through the flow meter 20, the water flow during steady-state circulation is monitored through the flow meter 20, and the average tidal flow velocity is obtained through the conversion of the area of the section of the model.
The specific test process of the offshore wind turbine complex load simulation system is as follows:
1) the model groove is designed according to actual sea conditions, the length direction of the scale size of the model groove is not smaller than the actual fan interval, and the width direction meets the requirement that unstable streaming is not generated on the boundary.
2) The seabed stratum is designed according to actual engineering conditions, can be made of clay, silt or sandy soil, and needs to be compacted to a specified density in a saturated state and consolidated after the seabed stratum is made.
3) Designing a fan model according to the actual size, wherein a tower cylinder of the fan model is required to accord with the bending rigidity equivalence principle, and then placing the fan model in the middle of the model groove in a pressing-in or driving-in mode.
4) The wave making machine, the electromagnetic loading system and the submersible pump are arranged at corresponding positions, seawater converted according to the actual sea depth is injected into the model tank, and tap water can be used for replacing the model tank without considering the corrosivity research.
5) And (4) placing wave dissipation plates at two ends of the model groove, and opening a flow control valve at the bottom of the model groove.
6) The wave making machine, the electromagnetic loading system and the submersible pump are all started to be in a preheating state, waves with small amplitude and low-flow-speed water flow are formed in the system, and after a certain time, the model reaches an initial test condition.
7) And (4) converting according to the similar relation of hydrodynamics and aerodynamics to obtain the simulated test loading control indexes of wave intensity, tidal current velocity, pulsating wind equivalent intensity, frequency and the like.
8) And starting a load simulation system, simulating load output under no-load combination according to the design working condition, adjusting the voltage or frequency of the simulation system, and changing the load frequency, amplitude, wave height, flow speed and the like to the required test values.
9) And starting monitoring equipment to record test data, and obtaining the development rule of design indexes such as fan vibration, basic displacement, mud surface corner and the like.
The utility model discloses based on non-contact loading principle, designed the effect of electromagnetic type frequency conversion control system simulation wind load, realized the load and applyed the complete separation of system and fan structure. The wave making machine moves up and down to generate waves with different wavelengths and wave heights. The submersible pump is adopted to form pressure difference and discharge water into the water outlet pool, the valve at the bottom of the model box is opened, circulating water flow is formed in the model, and the effect of tide on the fan foundation can be simulated.
According to the utility model discloses a description and drawing, the field technical personnel make or use very easily the utility model discloses a non-contact frequency conversion loading system suitable for the simulation of the complicated load of offshore wind turbine to can produce the positive effect recorded in the utility model.
Unless otherwise specified, in the present invention, if the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are used for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass both fixed and removable connections, or integral connections; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.
Claims (8)
1. The utility model provides a non-contact frequency conversion loading system suitable for simulation of offshore wind turbine complex load which characterized in that includes:
the water tank structure comprises a mould groove (1), wherein a first water through tank (2) and a second water through tank (12) are respectively arranged on the left side and the right side of the mould groove (1), and the water through tanks on the two sides are communicated through a connecting channel (21) arranged at the bottom of the mould groove (1);
the wave maker (4) is arranged close to the first water through tank (2), and waves with different wave heights and wavelengths are generated by adjusting the amplitude and the frequency of the vertical operation of the wave maker (4);
the submersible pump (11) is arranged close to the second water through tank (12) and used for simulating different flow directions of tide and realizing positive circulation or reverse circulation of water flow in the system;
the fan is arranged between the first water through tank (2) and the second water through tank (12); and
the electromagnetic loading system is arranged at a certain distance from the fan and used for simulating unsteady characteristics of pulsating wind under a non-contact condition.
2. The non-contact variable frequency loading system suitable for offshore wind turbine complex load simulation according to claim 1, characterized in that: the wave maker (4) comprises a wave making plate (15), a connecting arm (14) and a servo motor, and the connecting arm (14) can be driven by the servo motor to move up and down, so that the wave making plate (15) which forms a certain included angle with the horizontal plane generates waves.
3. The non-contact variable frequency loading system suitable for offshore wind turbine complex load simulation according to claim 1, characterized in that: the fan is characterized in that a powerful magnet (17) is arranged inside the engine room (8), a variable-frequency electromagnetic loading device (10) of an electromagnetic loading system is arranged at a position away from the powerful magnet (17) by a certain distance, and the variable-frequency electromagnetic loading device (10) acts on the powerful magnet (17) so as to realize non-contact variable-frequency loading.
4. The non-contact variable frequency loading system suitable for offshore wind turbine complex load simulation according to claim 3, characterized in that: the wind turbine further comprises blades (7) and a base support structure (9).
5. The non-contact variable frequency loading system suitable for offshore wind turbine complex load simulation according to claim 3, characterized in that: the electromagnetic loading system further comprises an alternating power supply (19) for supplying power to the variable-frequency electromagnetic loading device (10) and a fixed base (18).
6. The non-contact variable frequency loading system suitable for offshore wind turbine complex load simulation according to claim 1, characterized in that: and flow control valves (13) are arranged at the joints of the first water through tank (2) and the second water through tank (12) and the connecting channel (21) respectively.
7. The non-contact variable frequency loading system suitable for offshore wind turbine complex load simulation according to claim 6, characterized in that: a flow meter (20) is arranged on the flow control valve (13).
8. The non-contact variable frequency loading system suitable for offshore wind turbine complex load simulation according to claim 1, characterized in that: the inner sides of the first water through tank (2) and the second water through tank (12) are respectively provided with a wave dissipation plate (3) so as to eliminate the reflection effect of waves generated by the wave generator (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120340160.6U CN214621667U (en) | 2021-02-05 | 2021-02-05 | Non-contact variable frequency loading system suitable for complicated load simulation of offshore wind turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120340160.6U CN214621667U (en) | 2021-02-05 | 2021-02-05 | Non-contact variable frequency loading system suitable for complicated load simulation of offshore wind turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214621667U true CN214621667U (en) | 2021-11-05 |
Family
ID=78441262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120340160.6U Active CN214621667U (en) | 2021-02-05 | 2021-02-05 | Non-contact variable frequency loading system suitable for complicated load simulation of offshore wind turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214621667U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982277A (en) * | 2021-02-05 | 2021-06-18 | 中国电建集团华东勘测设计研究院有限公司 | Non-contact variable frequency loading system suitable for complicated load simulation of offshore wind turbine |
-
2021
- 2021-02-05 CN CN202120340160.6U patent/CN214621667U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982277A (en) * | 2021-02-05 | 2021-06-18 | 中国电建集团华东勘测设计研究院有限公司 | Non-contact variable frequency loading system suitable for complicated load simulation of offshore wind turbine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7948107B2 (en) | Conversion of energy in waves and in tidal flow | |
| CN102042158B (en) | Four-in-one generating set of wind, sea wave, ground swell and solar energy | |
| CA2737216C (en) | Method and apparatus for installing tidal barrages | |
| KR20090021145A (en) | A machine and system for power generation through movement of water | |
| CN201874739U (en) | Four-in-one power generation device utilizing wind power, sea waves, ground swells and solar energy | |
| CN201420640Y (en) | Wave-energy generating system | |
| CN112982277A (en) | Non-contact variable frequency loading system suitable for complicated load simulation of offshore wind turbine | |
| CN214621667U (en) | Non-contact variable frequency loading system suitable for complicated load simulation of offshore wind turbine | |
| CN105781864A (en) | Tidal current energy power generation device and underwater sealing protective device thereof | |
| GB2443195A (en) | Power generation from water flow using jet pump principle | |
| O'Sullivan et al. | Dynamic characteristics of wave and tidal energy converters & a recommended structure for development of a generic model for grid connection | |
| Beaudoin et al. | Technological challenges to commercial-scale application of marine renewables | |
| CN106522157B (en) | A kind of breakwater device and its electricity-generating method of self-power generation type | |
| Chenari et al. | Wave energy systems: An overview of different wave energy converters and recommendation for future improvements | |
| CN105422361A (en) | Lifting type guiding and shielding device for tidal current energy | |
| Aubry et al. | Wave energy converters | |
| Lim et al. | Marine tidal current electric power generation: state of art and current status | |
| KR101239053B1 (en) | Ocean energy generation system | |
| CN205779451U (en) | Tidal current energy generating equipment and water-bed seal protecting device thereof | |
| CN109306933A (en) | Ocean energy of flow gas storage device | |
| Dettmer | Wave energy gets seaworthy | |
| KR20110115655A (en) | Tidal power generation device using waterwaves energe | |
| Plummer et al. | Power systems | |
| CN117267041A (en) | Wave energy comprehensive utilization device of offshore wind power jacket and construction method | |
| Costanzo et al. | Design of a Novel Concept for Harnessing Tidal Stream Power |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |