CN205229509U - Leaded light device suitable for PIV measures under wave current environment - Google Patents
Leaded light device suitable for PIV measures under wave current environment Download PDFInfo
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- CN205229509U CN205229509U CN201521068804.1U CN201521068804U CN205229509U CN 205229509 U CN205229509 U CN 205229509U CN 201521068804 U CN201521068804 U CN 201521068804U CN 205229509 U CN205229509 U CN 205229509U
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- guiding device
- piv
- threaded rod
- waves
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Abstract
The utility model discloses a leaded light device suitable for PIV measures under wave current environment, include: a pair of bracing piece and the vertical threaded rod of wearing to locate on the bracing piece, the threaded rod lower extreme is enclosed by a plurality of curb plates establishes the rectangular form water proof of type of one -tenth region, the dianegative is installed to the regional bottom of water proof. Useful part lies in: utilize the utility model discloses a leaded light device can make during the direct transparent inferior gram force bottom plate through leaded light device bottom of the produced laser of PIV laser instrument reaches the water, and unnecessary menstruation wave face avoids the light beam to receive surface of water influence of fluctuations, and the threaded rod lower extreme encloses by a plurality of curb plates that to establish the rectangular form water proof of type of one -tenth regional, and the water proof is regional promptly be narrow elongated, influences lessly to rivers, in addition, utilize the utility model discloses a behind the leaded light device, need not greatly sparingly to test the cost to experiment basin transformation.
Description
Technical field
The utility model relates to a kind of guiding device, is specifically related to a kind ofly be applicable to the guiding device that PIV measures under water current combining with waves.
Background technology
In river mouth, coastal area is usually that wave, trend and runoff exist simultaneously, the acting in conjunction impact of wave and current and a lot of physical phenomenons of control in coastal and offshore engineering, as washing away of estuary coast area sediment bypassing, beach evolution and Around Buildings.Current and wave combined flow makes flow field inner structure there occurs great changes, becomes complex, in order to science carries out current and wave combined flow research, is necessary water flow structure and the kinetic characteristic of grasping its inside.
Experiment measuring is one of important means of research current and wave combined flow, in order to disclose flow field basic structure and movement mechanism, to determine experience factor and check analysis result of calculation.In recent years, the fast development of computer technology and image processing techniques, makes flow field measurement technique be developed rapidly and raising, PIV(ParticleImageVelocimetry, particle image velocimetry) technology is used widely.But PIV technology is higher for experimental trough matching requirements, when laser is incident from the water surface, due to water surface continued jitters, easily produces incident beam Divergent Phenomenon, have a strong impact on the identifying processing of image.Tank is made the transparent glass water tank form of surrounding by the many employings of existing patent, as tank to be made bottom and the transparent water tank of surrounding by the application number patent that is 201220176072.8, then takes the method that laser is incident from the side.Although can solve the problem to a certain extent from the bottom of transparent transparent sink or sidewall incidence, higher to the requirement of tank, experimental cost is relatively large; For the long tank in laboratory, incident sideways can cause again settling camera to take.Therefore, if can design a kind of Novel experiment device, make laser can realize incident above the water surface and not affect by water level fluctuation, so cost will reduce greatly, and PIV technology more effectively can be applied to wave current experiment measuring technical field.
Utility model content
For solving the deficiencies in the prior art, the purpose of this utility model is to provide a kind of guiding device being applicable to PIV under water current combining with waves and measuring, do not affect by water level fluctuation when guaranteeing that laser is incident from the top water surface, take high-quality image and be beneficial to Computer Analysis process, reduce experimental cost.
In order to realize above-mentioned target, the utility model adopts following technical scheme:
A kind ofly be applicable to the guiding device that PIV measures under water current combining with waves, comprise: pair of support rods and the threaded rod be vertically arranged on support bar, described threaded rod lower end is enclosed to form class strip water proof region by multiple side plate, and the bottom in described water proof region is provided with dianegative.
Preferably, aforementioned threads bar to be fixedly connected on support bar by nut and can up-down adjustment.
Particularly, in measuring process, utilize G word to press from both sides and support bar is fixed on experimental trough.
More preferably, aforementioned threads bar is made up of stainless steel material, and surperficial coating black dumb light paint is reflective to prevent.
Again preferably, aforementioned transparent base plate is made up of transparent acrylic.
Further, aforementioned water proof region is made up of two blocks of minor face side plates and orthogonal the enclosing of two block length side plates.
Further, aforementioned minor face side plate and long side plate are made by black acrylic board.
Preferably, aforementioned threads bar lower end is provided with square contiguous block, and described minor face side plate is installed on square contiguous block.
Usefulness of the present utility model is: the transparent acrylic base plate that the laser straight utilizing guiding device of the present utility model that PIV laser instrument can be made to produce was connected bottom guiding device reaches in water body, need not to pass through corrugated, to avoid light beam to affect by water level fluctuation; And threaded rod lower end is enclosed to form class strip water proof region by multiple side plate, namely water proof region is narrow long type, less to water currents; In addition, after utilizing guiding device of the present utility model, without the need to transforming experimental trough, greatly experimental cost can be saved.
Accompanying drawing explanation
Fig. 1 is a kind of front view being applicable to a preferred embodiment of the guiding device that PIV measures under water current combining with waves of the present utility model;
Fig. 2 is side view embodiment illustrated in fig. 1;
Fig. 3 is vertical view embodiment illustrated in fig. 1;
Fig. 4 is fitting arrangement embodiment illustrated in fig. 1;
Fig. 5 installs PIV before and after guiding device to measure original image comparison diagram;
Fig. 6 installs ADV before and after guiding device under wave current condition to survey vertical velocity comparison diagram;
Fig. 7 is that after installing guiding device under wave current condition, PIV and ADV surveys vertical velocity comparison diagram.
The implication of Reference numeral in figure: 1, support bar, 2, threaded rod, 3, nut, 4, dianegative, 5, minor face side plate, 6, long side plate, 7, square contiguous block, 8, experimental trough, 9, PIV laser instrument, 10, laser port, 11, CCD camera, 12, synchronizer, 13, workstation.
Embodiment
Below in conjunction with the drawings and specific embodiments, concrete introduction is done to the utility model.
See Fig. 1 to Fig. 3, be of the present utility modelly applicable to the guiding device that PIV measures under water current combining with waves and comprise: pair of support rods 1 and the threaded rod 2 be vertically arranged on support bar 1, threaded rod 2 to be fixedly connected on support bar 1 by nut 3 and can up-down adjustment.Threaded rod 2 lower end is enclosed to form class strip water proof region by multiple side plate, the bottom in water proof region is provided with the dianegative 4 be made up of transparent acrylic, so, wave current impact would not be subject in water proof region, guarantee that incident above guiding device and through dianegative 4 light is not subject to corrugated influence of fluctuations, as shown in Figure 5, a figure does not install guiding device, b figure installs guiding device, and difference on effect is very remarkable.
Particularly, in the present embodiment, threaded rod 2 is made up of stainless steel material, and surperficial coating black dumb light paint is reflective to prevent.Water proof region is made up of two blocks of minor face side plates 5 and orthogonal the enclosing of two block length side plates 6, and minor face side plate 5 and long side plate 6 are made by black acrylic board, improves the reliability of testing result.In addition, conveniently connect minor face side plate 5, be provided with square contiguous block 7 in threaded rod 2 lower end, minor face side plate 5 is installed on square contiguous block 7, and in the present embodiment, long side plate 6 length is 60cm, and minor face side plate 5 length is 3cm, and both are highly 10cm.
In order to more clearly understand the utility model, below the use procedure of guiding device of the present utility model is set forth: as shown in Figure 4, in measuring process, utilizing G word to press from both sides is fixed on experimental trough 8 by support bar 1, the adjustable threaded rod 2 of rotating nut 3 moves up and down, until the water level in experimental trough 8 arrives the correct position of minor face side plate 5 and long side plate 6 outer wall, so-called " correct position " should have following requirement: (1), wave height do not exceed the highest point of guiding device minor face side plate 5 and long side plate 6; (2) current, below dianegative 4 obviously do not fluctuate.The laser port 10 of PIV laser instrument is positioned at above guiding device, laser reaches in water body with sheet light form through dianegative 4, need not to pass through corrugated, avoid corrugated to fluctuate and cause the generation of laser beam, now, CCD camera 11 can gather high quality graphic and feed back to workstation 13 through synchronizer 12.
Fig. 6 installs ADV(AcousticDopplerVelocimeter before and after guiding device under wave current condition, Doppler's acoustics knotmeter, the Single-point velocity determination instrument that a kind of precision is higher) the vertical velocity comparison diagram surveyed, Fig. 7 is surveyed vertical velocity comparison diagram by installing PIV and ADV after guiding device, in experiment, the environmental parameter of wave current is: depth of water 50cm, crossing current flow velocity 4cm/s, wave height 3cm, period of wave 1.4s.As can be seen from Figure 6, guiding device is very little for the flow field interference under water current combining with waves, composition graphs 7, and after adding guiding device, PIV can meet measurement requirement well.
To sum up, the transparent acrylic base plate that the laser straight utilizing guiding device of the present utility model that PIV laser instrument 9 can be made to produce was connected bottom guiding device reaches in water body, and corrugated of need not passing through, avoids light beam to affect by water level fluctuation; And threaded rod 2 lower end is enclosed to form class strip water proof region by multiple side plate, namely water proof region is narrow long type, less to water currents; In addition, after utilizing guiding device of the present utility model, without the need to transforming experimental trough 8, greatly experimental cost can be saved.
More than show and describe ultimate principle of the present utility model, principal character and advantage.The technician of the industry should understand, and above-described embodiment does not limit the utility model in any form, the technical scheme that the mode that all employings are equal to replacement or equivalent transformation obtains, and all drops in protection domain of the present utility model.
Claims (8)
1. one kind is applicable to the guiding device that PIV measures under water current combining with waves, it is characterized in that, comprise: pair of support rods and the threaded rod be vertically arranged on support bar, described threaded rod lower end is enclosed to form class strip water proof region by multiple side plate, and the bottom in described water proof region is provided with dianegative.
2. be according to claim 1ly a kind ofly applicable to the guiding device that PIV measures under water current combining with waves, it is characterized in that, described threaded rod to be fixedly connected on support bar by nut and can up-down adjustment.
3. be according to claim 1ly a kind ofly applicable to the guiding device that PIV measures under water current combining with waves, it is characterized in that, in measuring process, utilize G word to press from both sides and support bar is fixed on experimental trough.
4. be according to claim 1ly a kind ofly applicable to the guiding device that PIV measures under water current combining with waves, it is characterized in that, described threaded rod is made up of stainless steel material, and surperficial coating black dumb light paint is reflective to prevent.
5. be according to claim 1ly a kind ofly applicable to the guiding device that PIV measures under water current combining with waves, it is characterized in that, described dianegative is made up of transparent acrylic.
6. a kind of according to any one of claim 1-5 is applicable to the guiding device that PIV under water current combining with waves measures, and it is characterized in that, described water proof region is made up of two blocks of minor face side plates and orthogonal the enclosing of two block length side plates.
7. be according to claim 6ly a kind ofly applicable to the guiding device that PIV measures under water current combining with waves, it is characterized in that, described minor face side plate and long side plate are made by black acrylic board.
8. be according to claim 6ly a kind ofly applicable to the guiding device that PIV measures under water current combining with waves, it is characterized in that, described threaded rod lower end is provided with square contiguous block, and described minor face side plate is installed on square contiguous block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521068804.1U CN205229509U (en) | 2015-12-21 | 2015-12-21 | Leaded light device suitable for PIV measures under wave current environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521068804.1U CN205229509U (en) | 2015-12-21 | 2015-12-21 | Leaded light device suitable for PIV measures under wave current environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205229509U true CN205229509U (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521068804.1U Expired - Fee Related CN205229509U (en) | 2015-12-21 | 2015-12-21 | Leaded light device suitable for PIV measures under wave current environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205229509U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801584A (en) * | 2017-10-17 | 2018-11-13 | 沈熊 | Wave current flow velocity measuring system, water hole formula swimming machine system based on Laser Doppler speed and velocity correction method |
| CN110456098A (en) * | 2019-08-28 | 2019-11-15 | 北京工业大学 | It is a kind of to avoid reflective retaining device for PIV experiment |
| CN114509238A (en) * | 2021-12-31 | 2022-05-17 | 重庆交通大学 | Water surface light guide device and flow measurement system suitable for indoor water tank test |
-
2015
- 2015-12-21 CN CN201521068804.1U patent/CN205229509U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801584A (en) * | 2017-10-17 | 2018-11-13 | 沈熊 | Wave current flow velocity measuring system, water hole formula swimming machine system based on Laser Doppler speed and velocity correction method |
| CN108801584B (en) * | 2017-10-17 | 2024-04-02 | 沈熊 | Wave flow velocity measurement system based on laser Doppler velocity measurement, water tunnel type swimming machine system and velocity correction method |
| CN110456098A (en) * | 2019-08-28 | 2019-11-15 | 北京工业大学 | It is a kind of to avoid reflective retaining device for PIV experiment |
| CN114509238A (en) * | 2021-12-31 | 2022-05-17 | 重庆交通大学 | Water surface light guide device and flow measurement system suitable for indoor water tank test |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20181221 |