CN201867134U - Underwater high-speed object generator produced along with super-cavity - Google Patents
Underwater high-speed object generator produced along with super-cavity Download PDFInfo
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- CN201867134U CN201867134U CN2010205983247U CN201020598324U CN201867134U CN 201867134 U CN201867134 U CN 201867134U CN 2010205983247 U CN2010205983247 U CN 2010205983247U CN 201020598324 U CN201020598324 U CN 201020598324U CN 201867134 U CN201867134 U CN 201867134U
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Abstract
The utility model discloses an underwater high-speed object generator produced along with a super-cavity, which comprises a high-pressure gas source, a box support frame, a high-speed photographic apparatus, an industrial control computer, a diaphragm, a safety interceptor, a water tank, a water tank cover, a flat plate, a ball valve, a shooting tube, a strengthening plate, a gas guide pipe, a fastening plate and a shooting tube support frame. An object to be tested is driven by nitrogen or helium released by the high-pressure gas source to increase the speed and is then shot into the water tank with liquid through the shooting tube. When the object to be tested passes through the free surface of the liquid from top to bottom and from bottom to top, a water inlet flow field and a water outlet flow field can be produced along with the super-cavity. The super-cavity has a relatively clear internal and external border for steam-liquid phase flow, and various optical instruments and flow field visualization instruments can be used together with the generator for study and understanding of the gas balance in the cavity, interaction of the free surface and the super-cavity, instability of the steam-liquid interface, development of the turbulent boundary layer and other complex behaviors of fluid dynamics.
Description
Technical field
The utility model relates to the generator of fluid pressure in the hydrodynamics, especially relates to a kind of underwater high-speed object generator of following supercavity to produce.
Background technology
" cavitation " is a kind of general hydrodynamics phenomenon, and it occurs in the liquid regions that local pressure is lower than saturated vapor pressure under this temperature.With regard to water, if water temperature is not high, the pressure of the water surface is reduced to after certain critical value (this critical value is generally the saturated vapor pressure of liquid) or liquid stream is accelerated to certain speed, originally the microbubble that contained in the water body (gas nuclear) just sharply expands, just numerous obvious bubbles that contain water vapour or other gases have been formed immediately in the water, Here it is common " cavitation phenomenon " of people, the bubble of generation then is called " cavitation bubble ".When reducing water surface pressure or raising flow stream velocity to a greater degree, cavity scope length will develop into to surpass streams the dimension of object size, causes supercavitation, promptly produces " supercavity " (Supercavitation).Under the situation that the supercavity phenomenon takes place, the object that moves in the water will be fully by cavity institute envelope, and the running resistance of object this moment in water will descend greatly.
Supercavity mainly is divided into nature supercavity and two kinds of ventilation supercavities, and the former relies on the speed that improves sail body to produce supercavity, and the latter relies on the artificial ventilation to increase pressure generation supercavity in the cavity.China goes out entry at the high speed object and induces aspect the basic test research that produces the nature supercavity soon at the early-stage, relevant research unit carries out in the water hole, but because the object water entry test can only be carried out in most water holes, and test is subjected to the influence of froude number Fr bigger, the cavity distortion is more serious, is difficult to accurately analyze the morphological character of cavity.From the current documents and materials of publishing, China is for high speed, and particularly transonic object goes out entry with vertical or near vertical angle and induces the research that produces the supercavity aspect also seldom to relate to.The main cause that causes above-mentioned phenomenon is the underwater high-speed object generator that also occurs realizing preferably following the supercavity generation at present.The supercavitation of American invention is projectile (US Patent 6405653) under water, and a rocket engine is housed in the rear end of object, produces artificial ventilation's bubble by the exhaust of rocket engine at body surface.This equipment more complicated is not suitable for universal use the in the laboratory; And it generally can only keep horizontal movement, and can't finish the task of taking into account water outlet and water entry test.
Summary of the invention
At existing problem in the above-mentioned background technology, the purpose of this utility model is to provide a kind of underwater high-speed object generator of following supercavity to produce, can carry out to make object moment accelerate to the speed of 40m/s to 400m/s and go out entry with vertical or near vertical angle to induce the test that produces the nature supercavity.
For achieving the above object, the technical scheme taked of the utility model is:
One, a kind of underwater high-speed object generator of following supercavity to produce:
The utility model comprises high-pressure air source, case supports frame, high-speed camera, industrial computer, two barrier films, safety intercepting and capturing device, water tank, tank lid, flat board, ball valve, transmitting tube and transmitting tube bracing frames; The upper surface of case supports frame and dull and stereotyped center have isodiametric through hole, the coaxial flange that is welded with in dull and stereotyped lower surface, flange is installed first barrier film and ball valve downwards successively, transmitting tube is connected with the transmitting tube bracing frame, transmitting tube is placed in below the ball valve, the valve port center of ball valve is aimed at the emission port center of transmitting tube all the time, and transmitting tube is connected with high-pressure air source; The dull and stereotyped upper surface and the lower surface of water tank are affixed, the upper port of tank lid and water tank is connected through the hinge, and the tank lid center has through hole, and the upper surface of tank lid is intercepted and captured device with safety and is connected, the lower surface of tank lid is installed second barrier film and blind flange successively, is provided with watch window around the tank box; The camera of high-speed camera is aimed at the place, the liquid scope of freedom of watch window, and high-speed camera links to each other with industrial computer.
Two, a kind of underwater high-speed object generator of following supercavity to produce:
The utility model comprises high-pressure air source, case supports frame, high-speed camera, industrial computer, two barrier films, safety intercepting and capturing device, water tank, tank lid, flat board, ball valve, transmitting tube and transmitting tube bracing frames; The upper surface of case supports frame and dull and stereotyped center have isodiametric through hole, the coaxial flange that is welded with in dull and stereotyped lower surface, flange is installed downwards by first barrier film successively and safety is intercepted and captured device, the dull and stereotyped upper surface and the lower surface of water tank are affixed, the upper port of tank lid and water tank is connected through the hinge, the tank lid center has through hole, the upper surface of tank lid is connected with ball valve, the lower surface of tank lid is installed second barrier film and blind flange successively, transmitting tube is connected with the transmitting tube bracing frame, transmitting tube be placed on ball valve directly over, the valve port center of ball valve is aimed at the emission port center of transmitting tube all the time, transmitting tube is connected with high-pressure air source; Be provided with watch window around the tank box; The camera of high-speed camera is aimed at the place, the liquid scope of freedom of watch window, and high-speed camera links to each other with industrial computer.
More than the safety described in two kinds of technical schemes to intercept and capture device be a cylindrical steel body of filling full clay.
The beneficial effect that the utlity model has is:
The utility model adopts nitrogen that high-pressure air source discharged or helium to drive that test object is quickened, emission, realizes that test object goes out entry with the speed of 40m/s to 400m/s and induces and produce the 2 D natural supercavity flow.This supercavity flow has the significantly mutual perturbation action of vapour/liquid two-phase and vapour/liquid two-phase inner and outer boundary more clearly, is that single-phase steam flows in the inboard on border.Like this, be used various optical instruments and flow-field visualized instrument again, just can study and understand the poised state of gas in the cavity and body form and object draw ratio hydrodynamics process complexity such as the interaction of supercavity form Influence and Development, object resistance coefficient, the scope of freedom and the supercavity in water, the vapour/unstability at liquid interface, the development of turbulent boundary layer.
Adopt the utility model can make things convenient for, study intuitively the come in and go out hydrodynamic characteristic of the supercavity flow that water motion process followed of high speed object.In addition, the utility model is simple in structure, and cost is lower, is easy to promote.
Description of drawings
Fig. 1 is the structural representation of the utility model device when carrying out high speed object water exit test.
Fig. 2 is the enlarged drawing of A among Fig. 1.
Fig. 3 is the enlarged drawing of B among Fig. 1.
Fig. 4 is the structural representation of the utility model device when carrying out high speed object water entry test.
Fig. 5 is the enlarged drawing of C among Fig. 4.
Fig. 6 is the enlarged drawing of D among Fig. 4.
Among the figure: 1, high-pressure air source, 2, the case supports frame, 3, high-speed camera, 4, industrial computer, 5, test object, 6, lockhole, 7, second barrier film, 8, safety intercepts and captures device, 9, clay, 10, blind flange, 11, the butterfly hinge, 12, water tank, 13, watch window, 14, flat board, 15, binding, 16, flange, 17, first barrier film, 18, ball valve, 19, transmitting tube, 20, soket head cap screw, 21, stiffener, 22, tank lid, 23, gas conduit, 24, the transmitting tube bracing frame.
The specific embodiment
Below in conjunction with accompanying drawing and example the utility model is described further.
When carrying out high speed object water exit test, as shown in Figure 1, the utility model comprises that high-pressure air source 1, case supports frame 2, high-speed camera 3, industrial computer 4, two barrier film 7,17, safety intercepts and captures device 8, water tank 12, tank lid 22, dull and stereotyped 14, ball valve 18, transmitting tube 19, stiffener 21, gas conduit 23, binding 15 and transmitting tube bracing frame 24; The center of the upper surface of case supports frame 2 and flat board 14 has isodiametric through hole, the coaxial flange 16 that is welded with in dull and stereotyped 14 lower surfaces, flange 16 is installed first barrier film 17 and ball valve 18 downwards successively, transmitting tube 19 is connected with transmitting tube bracing frame 24, transmitting tube 19 is placed in below the ball valve 18, the valve port center of ball valve 18 is aimed at the emission port center of transmitting tube 19 all the time, and transmitting tube 19 is connected by gas conduit 23 with high-pressure air source 1; Dull and stereotyped 14 the upper surface and the lower surface of water tank 12 are affixed, tank lid 22 is connected by hinge 11 with the upper port of water tank 12, tank lid 22 centers have through hole, the upper surface of tank lid 22 is intercepted and captured device 8 with safety and is connected, the lower surface of tank lid 22 is installed second barrier film 7 and blind flange 10 successively, respectively is connected with the watch window of being made by transparent organic glass 13 by bolt on 4 sides of water tank 12; Binding 15 all passes through soket head cap screw 20 with stiffener 21 and is connected with case supports frame 2; The camera of high-speed camera 3 is aimed at the place, the liquid scope of freedom of watch window 13, and high-speed camera 3 links to each other with industrial computer 4.
As Fig. 2, shown in Figure 3, the radial geometries of two barrier films 7,17 is circular, and its sectional area size equals the joint face sectional area size of blind flange 10 and flange 16 respectively.
As shown in Figure 3, safety is intercepted and captured and is put clay 9 in the device 8.
When carrying out high speed object water entry test, as shown in Figure 4, comprise that high-pressure air source 1, case supports frame 2, high-speed camera 3, industrial computer 4, two barrier film 7,17, safety intercepts and captures device 8, water tank 12, tank lid 22, dull and stereotyped 14, ball valve 18, transmitting tube 19 and transmitting tube bracing frame 24; The center of the upper surface of case supports frame 2 and flat board 14 has isodiametric through hole, the coaxial flange 16 that is welded with in dull and stereotyped 14 lower surfaces, flange 16 is installed first barrier film 17 downwards successively and safety is intercepted and captured device 8, dull and stereotyped 14 the upper surface and the lower surface of water tank 12 are affixed, tank lid 22 is connected by hinge 11 with the upper port of water tank 12, tank lid 22 centers have through hole, the upper surface of tank lid 22 is connected with ball valve 18, the lower surface of tank lid 22 is installed second barrier film 7 and blind flange 10 successively, transmitting tube 19 is connected with transmitting tube bracing frame 24, transmitting tube 19 be placed on ball valve 18 directly over, the valve port center of ball valve 18 is aimed at the emission port center of transmitting tube 19 all the time, and transmitting tube 19 is connected with high-pressure air source 1; Respectively be connected with the watch window of making by transparent organic glass 13 by bolt on 4 sides of water tank 12; Binding 15 all passes through soket head cap screw 20 with stiffener 21 and is connected with case supports frame 2; The camera of high-speed camera 3 is aimed at the place, the liquid scope of freedom of watch window 13, and high-speed camera 3 links to each other with industrial computer 4.
As Fig. 5, shown in Figure 6, the radial geometries of two barrier films 7,17 is circular, and its sectional area size equals the joint face sectional area size of blind flange 10 and flange 16 respectively.
As shown in Figure 6, safety is intercepted and captured and is put clay 9 in the device 8.
The course of work of the present utility model is as described below:
As Fig. 1, embodiment illustrated in fig. 4 in, install generator, test object 5 is placed in the transmitting tube 19, the valve port of ball valve 18 is opened, stored nitrogen or helium in the high-pressure air source 1, the valve port of opening high-pressure air source 1 makes it discharge gas, opens high-speed camera 3 simultaneously.High-pressure air source 1 can be provided through pressure maintaining valve by compressor or gas cylinder, and the force value of source of the gas is 3MPa to 25MPa.The gas that is discharged by high-pressure air source 1 drives test object 5 and launches from transmitting tube 19 high speeds, after in a single day test object 5 penetrates the barrier film that is touched for the first time, close the valve port of ball valve 18 immediately, test object 5 is injected in the water tank 12 that is placed with transparency liquid at a high speed, and inducing peripheral liquid forms supercavity, after test object 5 is left the liquid scope of freedom, move on, penetrate the barrier film that is touched for the second time, finally intercepted and captured device 8 seizure of intercepting and capturing, be embedded in the clay 9 by safety.High-speed camera 3 induces taken test object 5 the hydrodynamic action process that produces supercavity with the form transmission of digital picture and be stored in the industrial computer 4 in the water motion process of coming in and going out at a high speed, be used some optical instruments and flow-field visualized instrument again, just can study and understand the poised state of gas in the cavity and body form and object draw ratio supercavity form Influence and Development, the resistance coefficient of object in water, the interaction of the scope of freedom and supercavity, the unstability at vapour/liquid interface, the hydrodynamics process that the development of turbulent boundary layer etc. are complicated.
Through said method, can make test object 5 accelerate to 40m/s to 400m/s with above-mentioned generator.Test object 5 advances at utmost speed in liquid on one side, with liquid strong interaction takes place on one side, inducing peripheral liquid produces supercavity, and then lived by the complete envelope of supercavity institute in the process that makes test object 5 in liquid, move, around test object 5, form tangible supercavity vapour/liquid two-phase phenomenon.In addition, the geometric shape draw ratio of test object 5 is big more, and the speed when coming in and going out liquid is big more, helps test object 5 more and induce the generation supercavity in water, and the process that supercavity produces is also obvious more and directly perceived.Go out the entry process from test object 5, the captured digital picture of high-speed camera is analyzed, if digital picture shows around a certain moment test object 5 when the elongated spheroid shape fluid column envelope that is slightly larger than self size by a size is lived, illustrate that this moment, test object 5 was attended by the supercavity generation in the liquid running.
Claims (4)
1. underwater high-speed object generator of following supercavity to produce, it is characterized in that: comprise high-pressure air source (1), case supports frame (2), high-speed camera (3), industrial computer (4), two barrier films (7,17), safety intercepting and capturing device (8), water tank (12), tank lid (22), dull and stereotyped (14), ball valve (18), transmitting tube (19) and transmitting tube bracing frame (24); The center of the upper surface of case supports frame (2) and flat board (14) has isodiametric through hole, the coaxial flange (16) that is welded with in dull and stereotyped (14) lower surface, flange (16) is installed first barrier film (17) and ball valve (18) downwards successively, transmitting tube (19) is placed in below the ball valve (18), transmitting tube (19) is connected with transmitting tube bracing frame (24), the valve port center of ball valve (18) is aimed at the emission port center of transmitting tube (19) all the time, and transmitting tube (19) is connected with high-pressure air source (1); The upper surface of dull and stereotyped (14) and the lower surface of water tank (12) are affixed, tank lid (22) is connected by hinge (11) with the upper port of water tank (12), tank lid (22) center has through hole, the upper surface of tank lid (22) is intercepted and captured device (8) with safety and is connected, the lower surface of tank lid (22) is installed second barrier film (7) and blind flange (10) successively, is provided with watch window (13) around water tank (12) casing; The camera of high-speed camera (3) is aimed at the place, the liquid scope of freedom of watch window (13), and high-speed camera (3) links to each other with industrial computer (4).
2. a kind of underwater high-speed object generator of following supercavity to produce according to claim 1 is characterized in that: it is a cylindrical steel body of filling full clay (9) that described safety is intercepted and captured device (8).
3. underwater high-speed object generator of following supercavity to produce, it is characterized in that: comprise high-pressure air source (1), case supports frame (2), high-speed camera (3), industrial computer (4), two barrier films (7,17), safety intercepting and capturing device (8), water tank (12), tank lid (22), dull and stereotyped (14), ball valve (18), transmitting tube (19) and transmitting tube bracing frame (24); The center of the upper surface of case supports frame (2) and flat board (14) has isodiametric through hole, the coaxial flange (16) that is welded with in dull and stereotyped (14) lower surface, flange (16) is installed downwards by first barrier film (17) successively and safety is intercepted and captured device (8), the upper surface of dull and stereotyped (14) and the lower surface of water tank (12) are affixed, tank lid (22) is connected by hinge (11) with the upper port of water tank (12), tank lid (22) center has through hole, the upper surface of tank lid (22) is connected with ball valve (18), the lower surface of tank lid (22) is installed second barrier film (7) and blind flange (10) successively, transmitting tube (19) is connected with transmitting tube bracing frame (24), transmitting tube (19) be placed on ball valve (18) directly over, the valve port center of ball valve (18) is aimed at the emission port center of transmitting tube (19) all the time, and transmitting tube (19) is connected with high-pressure air source (1); Be provided with watch window (13) around water tank (12) casing; The camera of high-speed camera (3) is aimed at the place, the liquid scope of freedom of watch window (13), and high-speed camera (3) links to each other with industrial computer (4).
4. a kind of underwater high-speed object generator of following supercavity to produce according to claim 3 is characterized in that: it is a cylindrical steel body of filling full clay (9) that described safety is intercepted and captured device (8).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205983247U CN201867134U (en) | 2010-11-09 | 2010-11-09 | Underwater high-speed object generator produced along with super-cavity |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205983247U CN201867134U (en) | 2010-11-09 | 2010-11-09 | Underwater high-speed object generator produced along with super-cavity |
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| CN201867134U true CN201867134U (en) | 2011-06-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095569A (en) * | 2010-11-09 | 2011-06-15 | 浙江理工大学 | Device for testing underwater high-speed object generated along with supercavity |
| CN102322770A (en) * | 2011-09-14 | 2012-01-18 | 浙江理工大学 | Launching device for water super cavity and high-speed object to access water |
| CN103257030A (en) * | 2013-05-15 | 2013-08-21 | 浙江理工大学 | Constraint type experiment supercavity generating device |
-
2010
- 2010-11-09 CN CN2010205983247U patent/CN201867134U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095569A (en) * | 2010-11-09 | 2011-06-15 | 浙江理工大学 | Device for testing underwater high-speed object generated along with supercavity |
| CN102095569B (en) * | 2010-11-09 | 2012-05-23 | 浙江理工大学 | Device for testing underwater high-speed object generated along with supercavity |
| CN102322770A (en) * | 2011-09-14 | 2012-01-18 | 浙江理工大学 | Launching device for water super cavity and high-speed object to access water |
| CN102322770B (en) * | 2011-09-14 | 2013-12-04 | 浙江理工大学 | Launching device for water super cavity and high-speed object to access water |
| CN103257030A (en) * | 2013-05-15 | 2013-08-21 | 浙江理工大学 | Constraint type experiment supercavity generating device |
| CN103257030B (en) * | 2013-05-15 | 2015-06-17 | 浙江理工大学 | Constraint type experiment supercavity generating device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110615 Effective date of abandoning: 20120523 |