CN203037443U - Buoyancy pendulum wave energy device model - Google Patents
Buoyancy pendulum wave energy device model Download PDFInfo
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- CN203037443U CN203037443U CN 201220733342 CN201220733342U CN203037443U CN 203037443 U CN203037443 U CN 203037443U CN 201220733342 CN201220733342 CN 201220733342 CN 201220733342 U CN201220733342 U CN 201220733342U CN 203037443 U CN203037443 U CN 203037443U
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- rotating shaft
- pendulum
- wave energy
- magnetic powder
- torque sensor
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Abstract
The utility model discloses a buoyancy pendulum wave energy device model which comprises an underwater part, an above-water part and a transmission system between the two parts. The above-water part comprises an upper rotating shaft, a torque sensor and a magnetic powder brake which is connected with the upper rotating shaft through the torque sensor. The underwater part comprises a bottom plate, a swing plate and a lower rotating shaft, and the swing plate is connected to the lower rotating shaft which is fixedly connected with the bottom plate. The transmission system comprises rotating wheels which are respectively connected with the upper rotating shaft and the lower rotating shaft and a steel wire rope arranged between the rotating wheel of the upper rotating shaft and the rotating wheel of the lower rotating shaft. The swing plate comprises 11 cavities, 8 cavities at a lower layer can be filled with water, and a top end of a cavity at the center of a top layer is provided with a cover. According to the technical scheme of the buoyancy pendulum wave energy device model, the magnetic powder brake and the torque sensor are employed, the structure is simple, the cost is relatively low, and the change of a moment of inertia of the swing plate is realized from two aspects.
Description
Technical field
The utility model relates to the test model of wave energy apparatus hydrodynamic performance, relates in particular to buoyancy pendulum-type wave energy apparatus model.
Background technology
Hydrodynamic performance is most important to wave energy apparatus, and to change efficient closely related with the dress of device.For the Study on hydrodynamic performance of wave energy apparatus, the physical experiments important research method that is absolutely necessary, and appropriate test unit is the key of physical experiments successful implementation.The PTO damping is the damping of device energy extraction system, is difficult to simulate with real electricity generation system in the physical experiments device, but carries out equivalent process with other method.For buoyancy pendulum-type wave energy apparatus, PTO damping analogy method commonly used comprises: adopt expensive friction brake analog constant PTO damping, employing is based on the damper analog linearity PTO damping of eddy current loss, cross the PTO damping of air compressor simulated hanging pendulum device etc., the utility model adopts the PTO damping of magnetic powder brake analogy model device.In the existing model test, buoyancy pendulum pendulum plate generally can only change the self inertia square by a kind of mode, and pendulum plate of the present utility model can change moment of inertia from two aspects.In the buoyancy pendulum-type wave energy apparatus process of the test, the physical quantity that needs to measure comprises the pendulum Board position, PTO moment of resistance value, pendulum plate surface pressing etc., and the utility model provides a cover rational measurement scheme.
Summary of the invention
The utility model is at deficiency of the prior art, and a kind of simple in structure, buoyancy pendulum-type wave energy apparatus model that cost is low is provided.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals.
Buoyancy pendulum-type wave energy apparatus model comprises underwater portion, above water and kinematic train between the two.Above water comprises rotating shaft, torque sensor and magnetic powder brake, and magnetic powder brake connects by torque sensor goes up rotating shaft; Underwater portion comprises base plate, pendulum plate and lower rotary shaft, and the pendulum plate is connected on the lower rotary shaft the fixedly connected base plate of lower rotary shaft; Kinematic train comprises two runners that are connected to rotating shaft and lower rotary shaft, and is located at the wire rope between the runner of the runner of rotating shaft and lower rotary shaft.In process of the test, the physical quantity that needs to measure comprises pivot angle, the PTO moment of resistance, the pendulum plate surface wave pressure of putting plate, adopts CCD high-speed camera, dynamic torque sensor, pressure transducer to measure respectively.Underwater portion, above water and kinematic train between the two all are located in the tank of test.
As preferably, the pendulum intralamellar part comprises 11 cavitys, wherein can water-filling in 8 of lower floor cavitys, and the cavity top in the middle of the superiors is provided with lid, can add weight, realizes the change of pendulum plate moment of inertia from two aspects.
As preferably, adopt the PTO damping of magnetic powder brake analogue means, with the magnetic powder brake design and installation on the support on tank top, by
Dynamic torque sensorConnect
Last rotating shaft, last rotating shaft is fixed on the base by bearing, by runner and high strength wire rope the moment of resistance of magnetic powder brake is exported transmission, is loaded on again
Lower rotary shaft, the PTO damping of simulation buoyancy pendulum-type wave energy apparatus.By the control exciting curent, change the moment of resistance output of magnetic powder brake, reach the purpose that changes model equipment PTO damping.
As preferably, in the symmetry transmission of the pendulum plate left and right sides, so that the pendulum plate is stable, 2 runners are installed respectively in upper and lower rotating shaft, connect runner up and down with high strength wire rope.
As preferably, in the lower end of bottom runner and the upper end of top runner, wire rope and runner are fixed, make relative slip of the unlikely generation of wire rope and runner.Be equipped with on the wire rope
Stretcher, adjust stretcher before the test, make wire rope keep certain rate of tension, improve transmission performance.
As preferably, adopt the CCD high-speed camera to follow the trail of buoyancy pendulum swing process, finish all operating condition of test after, use picture that AVIPlayer software records the CCD high-speed camera and carry out data and handle.Adopt the dynamic torque sensor measurement PTO moment of resistance, torque sensor one end connects magnetic powder brake, and the other end connects goes up rotating shaft, carries out reading before the test earlier and makes zero, and exports the dynamic torque value in the process of the test in real time.
According to the technical solution of the utility model, adopt magnetic powder brake and torque sensor, simple in structure, cost is relatively low, pendulum template die type realizes the change of pendulum plate moment of inertia from two aspects.Pendulum plate of the present utility model can change moment of inertia from two aspects.
Description of drawings
Fig. 1 is front view of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the syndeton synoptic diagram of the utility model base plate.
Embodiment
Buoyancy pendulum-type wave energy apparatus model comprises underwater portion, above water and kinematic train between the two.Buoyancy pendulum-type wave energy apparatus mainly is to capture wave energy, can also be used to generating, desalinization and ice making etc., and mounted cast of the present utility model is used in tank.
Underwater portion comprises lower rotary shaft 2 and pendulum plate 3, and lower rotary shaft 2 i.e. the jointed shaft of bottom, and both connect by axle sleeve.In base plate 22, base plate 22 is fixed at the bottom of the tank by expansion bolt 7 by bearing 11 and bearing fixing for lower rotary shaft 2.
Above water comprises magnetic powder brake 6, controller and last rotating shaft 1, and last rotating shaft 1 is the top transmission shaft, is installed on the support 12 in the tank, in order to the PTO damping of analogue means.Controller is torque sensor 5.
Kinematic train comprises runner 41 and wire rope 4, by the transmission between runner 41 and the last rotating shaft 1 of high-intensity wire rope 4 realizations and the lower rotary shaft 2, the PTO damping is loaded on pendulum plate 3(i.e. " buoyancy pendulum ").
The buoyancy pendulum:
Pendulum plate 3 adopts the poly (methyl methacrylate) plate of thick 9mm to make, and pendulum plate 3 inside comprise 11 cavitys, wherein can water-filling in 8 of lower floor cavitys, and the cavity top in the middle of the superiors is provided with lid, can add weight, realizes the change of pendulum plate moment of inertia from two aspects.Pendulum plate 3 bottoms link to each other with lower rotary shaft 2 by three countershaft covers, lower rotary shaft 2 is the finished steel rotating shaft of diameter 30mm, be fixed on the base plate 22 by four bearings 11, it is the bearing of band waterproof side seal in the bearing 11, base plate 22 is fixed in by eight expansion bolts 7 at the bottom of the tank, and colored waterproof pad pasting is pasted on pendulum plate 3 surfaces.
Measure from outside surface, pendulum plate 3 wide 80cm, high 105cm, thick 16cm, the quality under the water-filling state is not 36kg.In this process of the test, only change pendulum plate moment of inertia by the internal cavity water-filling.
On pendulum plate 3 is head sea the axis of side and the unrestrained side of the back of the body, respectively arrange 3 pressure transducers, be used for to measure the flowing pressure on pendulum plate surface.
Magnetic powder brake and current controller:
The PTO damping of magnetic powder brake 6 analogue means is adopted in this test, magnetic powder brake 6 is actuating medium with the magnetic, be control device with the exciting curent, its output torque and exciting curent are good linear relationship and irrelevant with rotating speed or slippage, and it is fast to have response speed, advantage of simple structure, price are also relatively cheap.The magnetic powder brake that test is adopted is produced by Shanghai Zuo Lin Electrical Appliances Co., Ltd, and model is ZZ-20, peak torque output 200Nm, maximum exciting curent 1.6A.
Because magnetic powder brake 6 can't be worked, and will be installed under water (by the jointed shaft) after its sealing in water, can cause larger interference near the ripple attitude the pendulum plate, if be installed in below the tank bottom surface, can cause bigger destruction by tank again.Therefore, test model with the magnetic powder brake design and installation on the support 12 on tank top, connect upward rotating shaft by dynamic torque sensor 5, the same lower rotary shaft of last rotating shaft 1 diameter 30mm(), be fixed on the support 12 by four bearings 11, by runner 41 and high strength wire rope 4 moment of resistance of magnetic powder brake 6 is exported transmission, loaded on lower rotary shaft, the PTO damping of simulation buoyancy pendulum-type wave energy apparatus.
Adopt WLY-3A type stabilized current supply control exciting curent, change the moment of resistance output of magnetic powder brake 6, reach the purpose that changes model equipment PTO damping.WLY-3A type stabilized current supply provides 0 ~ 3.0A adjustable direct supply output.According to the strength of joint between pendulum plate and the lower shaft, the maximum exciting curent that adopts in the process of the test is 0.6A, and corresponding to magnetic powder brake moment of resistance output 75Nm, the output of the moment of resistance of 6 kinds of exciting curents and corresponding former offset see Table 1 in the test.
The output of the table 1 magnetic powder brake moment of resistance
Kinematic train between the upper and lower rotating shaft:
In model equipment, by runner 41 and high strength wire rope 4 moment of resistance of magnetic powder brake 6 is passed to lower rotary shaft 2, stable for making device, in the symmetry transmission of pendulum plate 3 left and right sides.Runner 41 diameter 70mm respectively install two in upper and lower rotating shaft, runner 41 distance pendulum plates 3 sides are 250mm.Connect runner 41 up and down with high strength wire rope, wire rope 4 diameter 4mm, in the lower end of bottom runner and the upper end of top runner that wire rope 4 is fixing with runner 41, make wire rope 4 and runner 41 unlikely generation is relative and slide.On the wire rope 4 stretcher is housed, adjusts stretcher before the test, make wire rope 4 keep certain rate of tension, improve transmission performance.In the process of the test, whenever carry out the test of 6 operating modes after, check the tensioning degree of wire rope, if lax sign occurs, in time adjust stretcher.
Measure and data acquisition system (DAS):
In process of the test, the physical quantity that needs to measure comprises: the corrugated process before and after the pivot angle of pendulum plate, the PTO moment of resistance, pendulum plate surface wave pressure and the pendulum plate, adopt CCD high-speed camera, dynamic torque sensor, pressure transducer and wave height recorder to measure respectively, and export result data in real time.Wave height recorder is conventional resistance-type, and sampling interval 0.02s respectively arranges one before and after the pendulum plate.
1) CCD high-speed camera
The CCD high-speed camera that test is adopted is produced (IGV-B1020 type) by USA I PERX company, and maximum shooting speed is 200 times/s.For preventing being damaged in the process of the test, with the box of a side opening it is carried out packaging protection after, be installed in the tank outside, take direction over against pendulum plate side.
Settle the higher lampet of brightness at the top of pendulum plate in the process of the test, by regulating the depth of exposure of CCD high-speed camera, make the brightness of lampet in the image that video camera obtains higher, be convenient to catch the movement locus of lampet, and then the swing process that obtains putting plate by the swing process of lampet.
After finishing all operating condition of test, the picture that application AVIPlayer software records the CCD high-speed camera carries out data to be handled.Pixel autotrace by AVIPlayer software, follow the trail of the movement locus of lampet, with the form output of lampet movement locus with pixel data, calibration according to pixel data and actual range concerns then, obtain the actual motion track of lampet location point, further be scaled the pivot angle of pendulum plate again, take pendulum plate pivot angle constantly thereby obtain each.
2) dynamic torque sensor
The digital dynamic torque sensor 5(KR-803 type that adopts the sharp observation and control technology of Beijing elder brother company limited to produce) dynamic torque that measures magnetic powder brake 6 is exported.Its ultimate principle is to adopt electric measurement technique of strain gage, forms strain bridge at elastic shaft, provides power supply can record the electric signal that this elastic shaft is turned round to strain bridge, after this strain signal amplification, through overvoltage/frequency conversion, become the frequency signal that is directly proportional with twisting strain, export in real time.
Torque sensor 5 one ends connect magnetic powder brake 6, and the other end connects goes up rotating shaft 1, carry out reading before the test earlier and make zero, and export the dynamic torque value in the process of the test in real time.
3) pressure transducer
Adopt the piezoelectric pressure indicator of routine to measure the flowing pressure of putting plate 3 surfaces, carry out the reception of pressure data and collection synchronously by DJ800 type 44 channel water numbers according to Acquisition Instrument.
Be the situation of pendulum plate surface flowing pressure in the analytical model device operational process, six pressure transducers of symmetric arrangement on the pendulum plate is head sea the axis of side and the unrestrained side of the back of the body, every side is arranged three, adjacent sensors spacing 20cm.
In a word, the above only is preferred embodiment of the present utility model, and all equalizations of doing according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (2)
1. buoyancy pendulum-type wave energy apparatus model, comprise underwater portion, above water and kinematic train between the two, they all are located in the tank of test, it is characterized in that: above water comprises rotating shaft, torque sensor and magnetic powder brake, and magnetic powder brake connects by torque sensor goes up rotating shaft; Underwater portion comprises base plate, pendulum plate and lower rotary shaft, and the pendulum plate is connected lower rotary shaft, and lower rotary shaft connects base plate; Kinematic train comprises two runners that are installed on rotating shaft and lower rotary shaft, and the wire rope that is used for two runners of transmission.
2. buoyancy pendulum-type wave energy apparatus model according to claim 1 is characterized in that: the pendulum intralamellar part comprises 11 cavitys, wherein can water-filling in 8 of lower floor cavitys, and the cavity top in the middle of the superiors is provided with lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220733342 CN203037443U (en) | 2012-12-27 | 2012-12-27 | Buoyancy pendulum wave energy device model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220733342 CN203037443U (en) | 2012-12-27 | 2012-12-27 | Buoyancy pendulum wave energy device model |
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| CN203037443U true CN203037443U (en) | 2013-07-03 |
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| CN 201220733342 Expired - Fee Related CN203037443U (en) | 2012-12-27 | 2012-12-27 | Buoyancy pendulum wave energy device model |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616158A (en) * | 2013-11-01 | 2014-03-05 | 江苏科技大学 | A moving wavy wall cylinder experimental apparatus |
| CN106644383A (en) * | 2016-12-28 | 2017-05-10 | 大连理工大学 | Variable-scale structure semi-submersible wave energy power generation platform testing device |
| CN110514402A (en) * | 2019-09-18 | 2019-11-29 | 哈尔滨工程大学 | A kind of experimental provision of wave energy apparatus performance test |
| CN112229600A (en) * | 2020-09-09 | 2021-01-15 | 中国航天空气动力技术研究院 | Towing tank test device and method for underwater power generation kite |
-
2012
- 2012-12-27 CN CN 201220733342 patent/CN203037443U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616158A (en) * | 2013-11-01 | 2014-03-05 | 江苏科技大学 | A moving wavy wall cylinder experimental apparatus |
| CN103616158B (en) * | 2013-11-01 | 2015-08-05 | 江苏科技大学 | Dynamic ripple wall cylinder test device |
| CN106644383A (en) * | 2016-12-28 | 2017-05-10 | 大连理工大学 | Variable-scale structure semi-submersible wave energy power generation platform testing device |
| CN110514402A (en) * | 2019-09-18 | 2019-11-29 | 哈尔滨工程大学 | A kind of experimental provision of wave energy apparatus performance test |
| CN112229600A (en) * | 2020-09-09 | 2021-01-15 | 中国航天空气动力技术研究院 | Towing tank test device and method for underwater power generation kite |
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Legal Events
| 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: 20130703 Termination date: 20151227 |
|
| EXPY | Termination of patent right or utility model |