CN108387364A - The device of vacuole is generated based on Laser-induced processes - Google Patents
The device of vacuole is generated based on Laser-induced processes Download PDFInfo
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- CN108387364A CN108387364A CN201810366943.4A CN201810366943A CN108387364A CN 108387364 A CN108387364 A CN 108387364A CN 201810366943 A CN201810366943 A CN 201810366943A CN 108387364 A CN108387364 A CN 108387364A
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- microscope group
- laser
- vacuole
- transmission
- generating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
Abstract
The invention discloses a kind of devices generating vacuole based on Laser-induced processes, including pedestal, generating device of laser, the first transmission microscope group and overhead optical table are provided on pedestal, it is provided with lifting platform on overhead optical table, overhead optical table and lifting platform offer the first light hole corresponding with the first transmission microscope group and the second light hole respectively, and lifting platform upper edge Laser emission direction is disposed with the second transmission microscope group, expands microscope group and focuses microscope group.In embodiment of the present invention, the laser that first transmission microscope group reflection laser generating means generates, microscope group reflection laser again is transmitted by after the first light hole and the second light hole second, so that laser is entered and expand microscope group, enters focusing microscope group through expanding the enhanced laser beam of microscope group, projected after focusing, that there are energy is more higher for specific position in the seawater, a large amount of vacuoles can be generated on this aspect, the vacuole generated when propeller works in simulated seawater, consequently facilitating carrying out scientific research to vacuole.
Description
Technical field
The present invention relates to vacuole research field more particularly to a kind of devices generating vacuole based on Laser-induced processes.
Background technology
The propeller of ship can will produce high-velocity flow, but the meeting in high-velocity flow in water in the operation process of high speed
Low pressure and/or ultralow pressure area are generated, vacuole is generated.
Vacuole vanish generate the result is that：Microjet is generated to the neighbouring surface of solids, the intensity of jet stream is more than base material
Fatigue strength just will produce release effect so that base surface generates cavity and pitted skin, and the basal area of blade can reduce therewith, low
It is broken in bulk strength, the smooth surface of blade is destroyed, and drop in lift, that is, thrust reduces, and propeller causes seriously
Damage.
Therefore, scientific research institutions need to simulate the generation environment of vacuole, improve the material and design structure of workpiece, to subtract
The corrosive effect of small vacuole so that the components such as propeller are more sturdy and durable.
In the prior art, the generation environment for simulating vacuole so operates：Workpiece for measurement is clipped in high-speed rotating electricity
On machine, gassing current is then blown into water, the effect of high speed rotation certain time, rotation can be right plus the bubble being blown into water
Workpiece surface has certain etching action, and then does vacuole dry run experiment.
But this method there is a problem of it is certain：The rotating speed of propeller is without so high, and the effect of vacuole is stronger,
Far beyond the order of magnitude of the vacuole of normal appearance, bubble that the air that is blown into generates also with the bubble that is generated under normal condition
Inconsistent, in this, it is difficult that real simulation vacuole is real to the corrosiveness of paddle body that high speed rotation, which adds and is blown into this method of gas,
It tests.
Invention content
A kind of device generating vacuole based on Laser-induced processes that embodiment of the present invention provides, including pedestal, it is described
It is provided with generating device of laser, the first transmission microscope group and overhead optical table on pedestal, the first transmission microscope group and described swashs
The light-emitting window of light generating apparatus is correspondingly arranged, and the first transmission microscope group is located at below the overhead optical table,
Lifting platform is provided on the overhead optical table, the overhead optical table and the lifting platform offer respectively
The first light hole corresponding with the first transmission microscope group and the second light hole, the lifting platform upper edge Laser emission direction is successively
It is provided with the second transmission microscope group, expand microscope group and focuses microscope group, second light hole is located at described second and transmits microscope group and institute
It states between expanding microscope group.
In embodiment of the present invention, the laser that the first transmission microscope group reflection laser generating means generates passes through the first thang-kng
Second transmits microscope group reflection laser again behind hole and the second light hole, so that laser is entered and expands microscope group, after expanding microscope group enhancing
Laser beam enter focusing microscope group, projected after focusing, that there are energy is more higher for specific position in the seawater, on this aspect
A large amount of vacuoles can be produced, the vacuole generated when propeller works in simulated seawater, consequently facilitating carrying out scientific research to vacuole.
Wherein, the first transmission microscope group and the second transmission microscope group improve the height of the final exit height of laser and vacuolization point, drop
The low demand to optical table height itself, to reduce the manufacturing cost of optical table.Meanwhile expanding microscope group and focusing
Microscope group ensure that the stability and intensity of laser exit beam, and then realizes and to be refracted as a stabilization, high-energy in the seawater
Vacuole generates point, and low energy consumption high efficiency, generates vacuole to high stable, easily facilitates the scientific research to vacuole in seawater, to
The damage for how reducing vacuole to structure preferably studied.
In some embodiments, the first transmission microscope group and the second transmission microscope group include reflecting element, described
Reflecting element for changing the laser optical path the direction of propagation.
In some embodiments, the reflecting element in the first transmission microscope group is used for the laser to described second
It transmits microscope group direction and reflects 90 degree, the speculum group in the second transmission microscope group is used to the laser expanding microscope group to described
Direction reflects 90 degree.
In some embodiments, the first transmission microscope group, first light hole, second light hole and described
Second transmission microscope group is located along the same line.
In some embodiments, the overhead optical table liftable.
In some embodiments, the first transmission microscope group, the second transmission microscope group, the microscope group and described of expanding
Focus microscope group liftable.
In some embodiments, the lifting platform is Aerial Work LT.
In some embodiments, further include water tank, the water tank, which corresponds to place, makes the laser pass through the focus lamp
Focus can be generated after group in the water tank.
In some embodiments, the water tank peripheric surface installs window, inside fills seawater.
In some embodiments, the window of the water tank is made of k9 glass.
The additional aspect and advantage of embodiment of the present invention will be set forth in part in the description, partly will be from following
Become apparent in description, or practice through the invention is recognized.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention is from combining in description of the following accompanying drawings to embodiment by change
It obtains obviously and is readily appreciated that, wherein：
Fig. 1 is the dimensional structure diagram of the device that vacuole is generated based on Laser-induced processes of embodiment of the present invention；
Fig. 2 is that the stereochemical structure of the water tank of the device that vacuole is generated based on Laser-induced processes of embodiment of the present invention is shown
It is intended to.
Specific implementation mode
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of
The description present invention and simplified description, do not indicate or imply the indicated device or element must have a particular orientation, with spy
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for
Purpose is described, relative importance is not understood to indicate or imply or implicitly indicates the quantity of indicated technical characteristic.
" first " is defined as a result, the feature of " second " can explicitly or implicitly include one or more feature.
In description of the invention, the meaning of " plurality " is two or more, unless otherwise specifically defined.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be to be electrically connected or can mutually communicate to be mechanical connection；It can be directly connected, it can also be by between intermediary
It connects connected, can be the interaction relationship of the connection or two elements inside two elements.For the ordinary skill of this field
For personnel, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the description of the present invention unless specifically defined or limited otherwise, fisrt feature in the "upper" of second feature or
"lower" may include that the first and second features are in direct contact, can also include the first and second features not be in direct contact but
Pass through the other characterisation contact between them.Moreover, fisrt feature second feature " on ", " top " and " above " include
Fisrt feature is right over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.First
Feature second feature " under ", " lower section " and " below " include fisrt feature immediately below second feature and obliquely downward, or only
Only indicate that fisrt feature level height is less than second feature.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.In order to
Simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, and
And it is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, itself not indicate between discussed various embodiments and/or setting
Relationship.In addition, the present invention provides various specific techniques and material example, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
It please refers to Fig.1 and Fig. 2, a kind of device generating vacuole based on Laser-induced processes that embodiment of the present invention provides
100, including pedestal 10, generating device of laser 12, first, which is provided with, on pedestal 10 transmits microscope group 14 and overhead optical table 16, the
The light-emitting window of one transmission microscope group 14 and generating device of laser 12 is correspondingly arranged, and the first transmission microscope group 14 is located at overhead optical table 16
Lower section.Lifting platform 162 is provided on overhead optical table 16, overhead optical table 16 and lifting platform 162 offer and respectively
One 14 corresponding first light hole of transmission microscope group, 164 and second light hole 1622,162 upper edge Laser emission direction of lifting platform is successively
It is provided with the second transmission microscope group 1624, expand microscope group 1626 and focuses microscope group 1628, the second light hole 1622 is located at the second transmission
It microscope group 1624 and expands between microscope group 1626.
In embodiment of the present invention, the laser that the first transmission 14 reflection laser generating means 12 of microscope group generates passes through first
Second transmits the reflection laser again of microscope group 1624 after light hole 164 and the second light hole 1622, so that laser is entered and expands microscope group
1626, it enters through expanding 1626 enhanced laser beam of microscope group and focuses microscope group 1628, projected after focusing, in the seawater specific
It is more higher that there are energy for position, can generate a large amount of vacuoles on this aspect, the vacuole generated when propeller works in simulated seawater,
Consequently facilitating carrying out scientific research to vacuole.Wherein, the first transmission microscope group 14 and second transmits microscope group 1624 and improves laser most
The height of whole exit height and vacuolization point, reduces the demand to optical table height itself, to reduce optics
The manufacturing cost of platform.Meanwhile it expanding microscope group 1626 and focusing microscope group 1628 and ensure that the stability of laser exit beam and strong
Degree, and then realization is refracted as a stabilization in the seawater, the vacuole of high-energy generates point, low energy consumption, high efficiency, high stable real estate
Raw vacuole, easily facilitates the scientific research to vacuole in seawater, to which the damage for how reducing vacuole to structure preferably studied.
Specifically, it is generated when laser-induced cavitation excitation principle is dependent on the irradiation of high-peak power laser beam to liquid substance
Optical breakdown phenomenon, the generated gas ions of high temperature breakdown absorb post laser energy can be swollen with supersonic speed progress near target
It is swollen, to be formed about the vacuole of high temperature and pressure in target.Since the running parameter of generating device of laser 12 can regulate and control,
Therefore the vacuole generation system based on laser, which generates the speed of vacuole and position, can carry out multi-faceted adjusting, for experiment
Research provides a kind of new experiment condition, and with this condition, we can make vacuole continuous or briefly act on workpiece
Different parts are tested.
And, on the one hand, the size and number for the vacuole that generating device of laser 12 generates can be controlled strictly,
On the other hand due to the one-way of laser, the position and direction that vacuole generates are also stringent controllable, due to this two dot characteristics, are swashed
The generation of photoinduction vacuole is to study the preferable experiment condition of vacuole simulated experiment.
The height for placing the water tank 20 of test piece is generally 130 centimetres -200 centimetres, to generate vacuole on workpiece,
The requirement for height of pedestal 10 to placing generating device of laser 12 is very high.But pedestal 10 needs to meet stable, smooth requirement,
The highly cost increase for increasing pedestal 10 is very big.Present embodiment transmits microscope group using the first transmission microscope group 14 and second
1624, the laser aiming that the generating device of laser 12 being placed on pedestal 10 is emitted to and 20 identical height of water tank, reduce
The manufacturing cost of pedestal 10.
In present embodiment, the height of pedestal 10 is 800 millimeters, and the height of overhead optical table 16 is 500mm, lifting platform
162 in the vertical direction telescopic maximum distance be 100mm, the second transmission microscope group 1624 and expand between microscope group 1626 away from
From for 150mm, the F for focusing microscope group 1628 is 100 millimeters, D 25mm, and laser is poly- in distance after focusing the outgoing of microscope group 1628
High-energy, high centrostigma are formed on the workpiece of the position of burnt microscope group 1628100mm, to generate vacuole, success mould on workpiece
The environment of vacuole is generated in quasi- seawater when propeller works.
Shadow is had no to vacuole generation position with the distance between microscope group 1628 is focused it should be noted that expanding microscope group 1626
It rings, when needing to adjust vacuole generation position, can be realized by replacing the focusing microscope group 1628 of different focusing effects.
In some embodiments, it includes reflecting element, reflector that the first transmission microscope group 14 and second, which transmits microscope group 1624,
Part for changing laser optical path the direction of propagation.
In some embodiments, the reflecting element in the first transmission microscope group 14 is used to laser transmitting microscope group to second
1624 directions reflect 90 degree, and the speculum group in the second transmission microscope group 1624 is used to reflect laser to 1626 direction of microscope group is expanded
90 degree.
In some embodiments, the first transmission microscope group 14, the first light hole 164, the second light hole 1622 and second pass
Defeated microscope group 1624 is located along the same line.
Specifically, " the first transmission microscope group 14, the first light hole 164, the second light hole 1622 described in present embodiment
It is located along the same line with the second transmission microscope group 1624 " refer to laser from the light path after the first transmission outgoing of microscope group 14 just
It can be by the first light hole 164, the second light hole 1622, into the light path inlet port of the second transmission microscope group 1624.
In some embodiments, 16 liftable of overhead optical table.
In this way, the height of overhead optical table 16 can be adjusted, so that laser can be accurately in water tank 20 according to experiment needs
Workpiece surface formed vacuole.
Specifically, the lifting of overhead optical table 16 can be realized by way of the cooperation of interior bar, outer bar and locating part, herein
It repeats no more.
In some embodiments, the first transmission microscope group 14, second transmits microscope group 1624, expands microscope group 1626 and focus lamp
1628 liftables of group.
In this way, can transmit microscope group 1624 according to experiment needs, adjustment the first transmission microscope group 14, second, expand microscope group 1626
With the height for focusing microscope group 1628, so that laser accurately workpiece surface in water tank 20 can form vacuole.
Specifically, the lifting of overhead optical table 16 can be realized by way of the cooperation of interior bar, outer bar and locating part, herein
It repeats no more.
In some embodiments, lifting platform 162 is Aerial Work LT 162.
In this way, the space that lifting platform 162 occupies is smaller, meanwhile, Aerial Work LT 162 can be lifted steadily, ensure to rise
Second on drop platform 162 transmits microscope group 1624, expands microscope group 1626 and focuses the work quality of microscope group 1628.
In some embodiments, further include water tank 20, water tank 20, which corresponds to place, makes laser after focusing microscope group 1628
Focus can be generated in water tank 20.
In some embodiments, 20 peripheric surface of water tank installs window, inside fills seawater.
In some embodiments, the window of water tank 20 is made of k9 glass.
In this way, the window of the K9 glass manufactures water tank 20 by resisting laser damage, so that generating device of laser 12 was emitted swashs
Light beam, which can penetrate and act on the workpiece surface inside water tank 20, generates vacuole.
Further, further include having the clear water storing unit being connected with water tank 20, seawater storage dress in present embodiment
It sets and waste liquid storing unit, provides for hydrodynamic that also have pumping plant, pumping plant be water tank 20 for sea for header tank
Water, clear water provide dynamical system, to facilitate the replacement of experiment water source environment during experiment.Water tank 20 and header tank it
Between by be used for transmission liquid rubber tube connect, to provide pipeline when transmitting water source for pumping plant.
There is conducting wire connection between water tank 20 and header tank, LED light-strip bands are provided on the upper cover plate of water tank 20, with
Just illumination, personal observations easy to operation are provided for water tank 20 under experiment condition.
To sum up, the workflow of the device 100 for generating vacuole based on Laser-induced processes in embodiment of the present invention is big
It causes as follows：
Activation system, is first turned on the water cooling unit being connected with generating device of laser 12, and water cooling unit can be by circulating water heating
To the optimum working temperature of generating device of laser 12；The switch for opening generating device of laser 12 occurs laser in control interface
The relevant parameter of device 12 is configured；Light extraction is clicked, the light beam that generating device of laser 12 exports is anti-through the first transmission microscope group 14
The second transmission microscope group 1624 being incident upon on overhead optical table 16；The light beam that second transmission microscope group 1624 is emitted is through expanding microscope group
1626 expand, and are transferred to water tank 20 by the focusing of microscope group 1628 is focused, vacuole are generated in the seawater in water tank 20, in workpiece table
The specific position in face forms vacuole, and then carries out vacuole experimental study to the privileged site of workpiece.
In the description of this specification, reference term " embodiment ", " certain embodiments ", " schematically implementation
What the description of mode ", " example ", " specific example " or " some examples " etc. meant to describe in conjunction with the embodiment or example
Particular features, structures, materials, or characteristics are contained at least one embodiment or example of the present invention.In this specification
In, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, the specific spy of description
Sign, structure, material or feature can be combined in any suitable manner in any one or more embodiments or example.
While embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that：
Can these embodiments be carried out with a variety of variations in the case of not departing from the principle of the present invention and objective, modification, replace and become
Type, the scope of the present invention are limited by claim and its equivalent.
Claims (10)
1. a kind of device generating vacuole based on Laser-induced processes, which is characterized in that including pedestal, be provided on the pedestal
Generating device of laser, the first transmission microscope group and overhead optical table, the first transmission microscope group and the generating device of laser
Light-emitting window is correspondingly arranged, and the first transmission microscope group is located at below the overhead optical table,
Lifting platform is provided on the overhead optical table, the overhead optical table and the lifting platform offer respectively and institute
Corresponding first light hole of the first transmission microscope group and the second light hole are stated, the lifting platform upper edge Laser emission direction is set gradually
There is the second transmission microscope group, expand microscope group and focus microscope group, second light hole is located at described second and transmits microscope group and the expansion
Between beam microscope group.
2. the device according to claim 1 for generating vacuole based on Laser-induced processes, which is characterized in that described first passes
Defeated microscope group and it is described second transmission microscope group include reflecting element, the reflecting element for changing the laser optical path propagation side
To.
3. the device according to claim 2 for generating vacuole based on Laser-induced processes, which is characterized in that described first passes
Reflecting element in defeated microscope group is used to the laser reflecting 90 degree to second transmission microscope group direction, the second transmission mirror
Speculum group in group is used to the laser reflecting 90 degree to beam expanding lens group direction.
4. the device according to claim 1 for generating vacuole based on Laser-induced processes, which is characterized in that described first passes
Defeated microscope group, first light hole, second light hole and the second transmission microscope group are located along the same line.
5. the device according to claim 1 for generating vacuole based on Laser-induced processes, which is characterized in that the overhead light
Learn platform liftable.
6. the device according to claim 1 for generating vacuole based on Laser-induced processes, which is characterized in that described first passes
Defeated microscope group, described expands microscope group and the focusing microscope group liftable at the second transmission microscope group.
7. the device according to claim 1 for generating vacuole based on Laser-induced processes, which is characterized in that the lifting platform
For Aerial Work LT.
8. the device according to claim 1 for generating vacuole based on Laser-induced processes, which is characterized in that further include water
Case, the water tank, which corresponds to place, makes the laser that can generate focus in the water tank after the focusing microscope group.
9. the device according to claim 8 for generating vacuole based on Laser-induced processes, which is characterized in that the water tank four
Circumferential surface installs window, inside fills seawater.
10. the device according to claim 9 for generating vacuole based on Laser-induced processes, which is characterized in that the water tank
Window be made of k9 glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810366943.4A CN108387364A (en) | 2018-04-23 | 2018-04-23 | The device of vacuole is generated based on Laser-induced processes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810366943.4A CN108387364A (en) | 2018-04-23 | 2018-04-23 | The device of vacuole is generated based on Laser-induced processes |
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| CN108387364A true CN108387364A (en) | 2018-08-10 |
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ID=63065259
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| CN201810366943.4A Withdrawn CN108387364A (en) | 2018-04-23 | 2018-04-23 | The device of vacuole is generated based on Laser-induced processes |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100131A (en) * | 2018-08-29 | 2018-12-28 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Briny environment fatigue experimental device under cavitation |
| CN109926583A (en) * | 2018-12-29 | 2019-06-25 | 苏州德龙激光股份有限公司 | To the processing unit (plant) and method of transfer and sintering production ag paste electrode before induced with laser |
| CN110346074A (en) * | 2019-06-13 | 2019-10-18 | 江苏大学 | A kind of device and method measuring induced with laser bubble collapse impact force |
| CN114705393A (en) * | 2022-03-24 | 2022-07-05 | 北京理工大学 | Multi-working-condition fluid cavitation generation and observation device |
-
2018
- 2018-04-23 CN CN201810366943.4A patent/CN108387364A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100131A (en) * | 2018-08-29 | 2018-12-28 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Briny environment fatigue experimental device under cavitation |
| CN109926583A (en) * | 2018-12-29 | 2019-06-25 | 苏州德龙激光股份有限公司 | To the processing unit (plant) and method of transfer and sintering production ag paste electrode before induced with laser |
| CN109926583B (en) * | 2018-12-29 | 2023-10-31 | 苏州德龙激光股份有限公司 | Processing device and method for manufacturing silver paste electrode by laser-induced forward transfer printing and sintering |
| CN110346074A (en) * | 2019-06-13 | 2019-10-18 | 江苏大学 | A kind of device and method measuring induced with laser bubble collapse impact force |
| CN114705393A (en) * | 2022-03-24 | 2022-07-05 | 北京理工大学 | Multi-working-condition fluid cavitation generation and observation device |
| CN114705393B (en) * | 2022-03-24 | 2023-07-04 | 北京理工大学 | Multi-working fluid cavitation generation and observation device |
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