CN103424239A - Underwater super-cavity producing device free of production of interferential cavity flows - Google Patents
Underwater super-cavity producing device free of production of interferential cavity flows Download PDFInfo
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- CN103424239A CN103424239A CN2013103043875A CN201310304387A CN103424239A CN 103424239 A CN103424239 A CN 103424239A CN 2013103043875 A CN2013103043875 A CN 2013103043875A CN 201310304387 A CN201310304387 A CN 201310304387A CN 103424239 A CN103424239 A CN 103424239A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
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- 238000007789 sealing Methods 0.000 abstract description 4
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- 238000012800 visualization Methods 0.000 abstract 1
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
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- 206010000234 Abortion spontaneous Diseases 0.000 description 1
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Abstract
The invention discloses an underwater super-cavity producing device free of production of interferential cavity flows. An observation window is arranged on a water tank, a sealing hose is installed outside a flange hole on the side wall, one end of an emission tube is inserted into the water tank through the sealing hose and then installed at one end of an exhaust tube inside a silencing tube, an air outlet hole at the top of the silencing tube is connected with an exhaust tube, a drain hole is formed in the lower portion of the front end, a missile body ejection hole is formed in the front portion, and a support which can be used for adjusting the height of the silencing tube is fixed inside the water tank; the other end of the emission tube is connected with a high-pressure air source through a tube valve connector, a solenoid valve, a cylinder valve connector and a high-pressure air cylinder, a positioning magnet is arranged on an outer cylindrical surface of the other end of the emission tube, a missile body is installed inside a hole at the other end of the emission tube, which corresponds to the positioning magnet, and a support which can be used for adjusting the angle of the emission tube and a support which can be used for adjusting the height of the high-pressure air cylinder are fixed on the ground. According to the underwater super-cavity producing device, the mechanism study on cavity development processes free of production of disturbance sections under the conditions of different water depths and different emission angles is conducted through adjustment of different diving angles of the missile body, adjustment of different water levels of the water tank and cooperation with a flow field visualization instrument.
Description
Technical field
The present invention relates to the experimental provision of fluid dynamics behavior and characteristic, especially relate to the generating means of supercavity under water that a kind of noiseless cavity flow produces.
Background technology
Sail body is in water during horizontal high-speed cruising, liquid around sail body will gasify, thereby produce the cavity that covers the sail body surface, in the time of among the encirclement of sail body in whole gas, we call the nature supercavity to this gas zones, now sail body moves in cavity, and the resistance of sail body operation greatly reduces.Along with social development and scientific and technical progress, the relevant achievement in research of supercavity, in sea transport industrial circle and natural science field, has especially obtained extensive important application in the military and national defense technology.
Nature supercavity and ventilation supercavity are two kinds of principal modes that supercavity exists.Both key distinctions are, natural supercavity relies on the speed that improves sail body to produce, and the ventilation supercavity relies on the artificial ventilation to increase pressure in cavity and generates.Mainly carry out in water hole for the Basic Experiment Study of supercavity at present, but water hole exists flow velocity low, easily generates the characteristics of burbling cavitation, usually need to generate the ventilation supercavity by the artificial ventilation and be studied.Yet the high-velocity projectiles experiment can obtain body motion at a high speed, easily generate the nature supercavity, and experimental cost is lower, the cycle is shorter, can be used as the effective means of research nature supercavity,
High-velocity projectiles experiment generating means is in experimentation, due to during the gas of forebody in power valve is introduced into water than body under the effect of body high-speed driving, thereby produce the disturbance section of interference flowing field, affect the observational study of supercavity initial development state, disturbance smoothness doped with air-spray causes the supercavity flow field more complicated, the trajectory that body enters after water also easily is subject to the impact of this flow-disturbing section, is unfavorable for the research of natural cavity generating process.Therefore, solve the forebody air and produce this problem of flow-disturbing section, for the development of studying the nature supercavity, formation overall process, have and leave no choice but important meaning, for the experiment accuracy that improves the high-velocity projectiles generating means, good help is also arranged.
Summary of the invention
For existing problem in the above-mentioned background technology, the generating means of supercavity under water that the object of the present invention is to provide a kind of noiseless cavity flow to produce, can realize under different water levels, and, under different emission angle, the high speed that unconfined flow section cavity produces enters water-jet bullet generation experimental study.
For achieving the above object, the technical scheme that the present invention takes is:
The present invention includes hush pipe, gas outlet, aiutage, holding screw, seal tube, power valve, phase magnet, body, pipe valve connector, solenoid valve, cylinder valve connector, high-pressure cylinder, high-pressure air source, air cylinder support, power valve support, water tank, hush pipe support; The water tank front and back is provided with the observation form of machine glass, the water tank sidewall has flange hole, flange hole is equipped with seal tube outward, one end of power valve inserts in water tank an end of the aiutage be arranged in hush pipe by seal tube, by holding screw joint noise reduction cylinder and aiutage, the top of hush pipe has venthole, venthole connects gas outlet, the front end bottom of hush pipe has osculum, the front portion of hush pipe has body and penetrates hole, and the hush pipe support of adjustable noise elimination cylinder height is fixed in water tank; The other end of power valve is by pipe valve connector, solenoid valve, cylinder valve connector, with high-pressure cylinder, be connected, high-pressure cylinder connects high-pressure air source, phase magnet is placed on the external cylindrical surface of the other end of power valve, another stomidium of the power valve corresponding with phase magnet is in-built body, and the air cylinder support of the power valve support of adjustable power valve angle and adjustable height air cylinder height all fixes on the ground.
Described aiutage is stepped cylindrical shell, the large end cylindrical shell of aiutage and hush pipe closely cooperate, upper and lower Ge Kai mono-threaded hole of large end cylindrical shell, aiutage is connected power valve with the threaded hole of hush pipe afterbody with holding screw, has the vent port that four rows distribute along circumference equal dividing on aiutage small end cylindrical shell.
Described air cylinder support comprises: two pins, two upper connecting rods, two set nuts, two lower connecting rods, base, four pulleys; The high-pressure cylinder bottom surface is connected with an end of upper connecting rod separately by pin separately respectively, and two upper connecting rods have external thread, and the set nut by separately tightens up upper connecting rod, and two lower connecting rods are vertically fixed on base, four pulleys is installed below base.
Described power valve support comprises: two pins, support bar, fixed bar, register pin, base; The power valve bottom surface is connected with an end of fixed bar and an end of support bar by pin respectively, the other end of fixed bar (is connected with base, have equally spaced aperture on the other end of support bar, the other end of support bar is inserted through fixed bar, register pin positions by the aperture on fixed bar hole and support bar, select the position in the different holes on support bar to coordinate with register pin, can make power valve realize the inclination of different angles.
The beneficial effect that the present invention has is:
The present invention adopts by aiutage, gas outlet, hush pipe, the exhaust noise silencing mechanism that holding screw forms, correctly water conservancy diversion fast and effectively by air-flow, make the pressure gas of forebody can be good at entering atmosphere by this exhaust noise silencing mechanism, can not produce the impact air in disturbance front end flow field, by this exhaust mode, reduce and test the noise that the running body process of being hit by a bullet produces in addition; By the power valve support, the adjusting of hush pipe support and air cylinder support, can set different projectile angles, carries out different contrast experiments; In different water levels and different emission angle projectile experimentation, coordinate in addition the adjusting of water level can carry out that body tilts into the water and the experiment of water outlet cavity.Phase magnet can guarantee the position of rigidity body in power valve accurately and reliably, deflection and landing can not occur, make body under the effect of high drive gas by the operation of normal ballistic trajectory, that carries out high-velocity projectiles enters water and water outlet experimental study.The present invention is simple in structure, and handling easily, convenient and practical, with low cost, is convenient to safeguard.
The accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is air flow direction schematic diagram in the body emission process.
Fig. 3 is the stereographic map of aiutage in Fig. 1.
Fig. 4 is the air cylinder support stereographic map.
Fig. 5 is the partial sectional view at Figure 1A-A place.
Fig. 6 is power valve support stereographic map.
In figure: 1. hush pipe, 2. gas outlet, 3. aiutage, 4. holding screw, 5. seal tube, 6. power valve, 7. phase magnet, 8. body, 9. pipe valve connector, 10. solenoid valve, 11. cylinder valve connector, 12. high-pressure cylinder, 13. high-pressure air source, 14. air cylinder support, 15. power valve support, 16. water tank, 17. hush pipe support, 14-1. pin, 14-2. upper connecting rod, 14-3. set nut, 14-4. lower connecting rod, 14-5. base, 14-6. pulley, 15-1. pin, 15-2. support bar, 15-3. fixed bar, 15-4. register pin, 15-5. base.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As shown in accompanying drawing 1, Fig. 2, the present invention includes hush pipe 1, gas outlet 2, aiutage 3, holding screw 4, seal tube 5, power valve 6, phase magnet 7, body 8, pipe valve connector 9, solenoid valve 10, cylinder valve connector 11, high-pressure cylinder 12, high-pressure air source 13, air cylinder support 14, power valve support 15, water tank 16, hush pipe support 17; Water tank 16 front and backs are provided with the observation form of machine glass, and the organic glass that sees through form can observe the process of the interior water level of water tank 16 and the body rear cavity generation of 8 emission and development; There is water level control apparatus water tank 16 belows, left side, by controlling water level control apparatus, can change the interior water level of water tank 16; Water tank 16 sidewalls have flange hole, flange hole is equipped with seal tube 5 outward, one end of power valve 6 is arranged on an end of the aiutage 3 in hush pipe 1 after inserting in water tank 16 by seal tube 5, by holding screw 4 joint noise reduction cylinders 1 and aiutage 3, the top of hush pipe 1 has venthole, venthole connects gas outlet 2, the front end bottom of hush pipe 1 has osculum (getting rid of the water that last time, test entered in hush pipe 1), the front portion of hush pipe 1 has body and penetrates hole, and the hush pipe support 17 of adjustable noise elimination cylinder 1 height is fixed on 16 li, water tank; The other end of power valve 6 is by pipe valve connector 9, solenoid valve 10, cylinder valve connector 11, with high-pressure cylinder 12, be connected, high-pressure cylinder 12 connects high-pressure air source 13, phase magnet 7 is placed on the external cylindrical surface of the other end of power valve 6, another stomidium of the power valve 6 corresponding with phase magnet 7 is in-built body 8, and the air cylinder support 14 of the power valve support 15 of adjustable power valve 6 angles and adjustable height air cylinder 12 height all fixes on the ground.
As shown in accompanying drawing 2, Fig. 3, described aiutage 3 is stepped cylindrical shell, the large end cylindrical shell of aiutage 3 and hush pipe 1 closely cooperate, upper and lower Ge Kai mono-threaded hole of large end cylindrical shell, aiutage 3 is connected power valve 6 with the threaded hole of hush pipe 1 afterbody with holding screw 4, has the vent port that four rows distribute along circumference equal dividing on aiutage 3 small end cylindrical shells.The exhaust noise silencing mechanism that this part forms, can form effective fast guiding to the gas of emission process body 8 front portions, it is rejected in atmosphere, thereby before body 8 enters water, stream field can not produce the flow-disturbing phenomenon, and the observation in flow field when body 8 is entered to water and analysis and research provide very large help
As shown in accompanying drawing 4, Fig. 5, described air cylinder support 14 comprises: two pin 14-1, two upper connecting rod 14-2, two set nut 14-3, two lower connecting rod 14-4, base 14-5, four pulley 14-6; The high-pressure cylinder bottom surface is connected with the end of upper connecting rod 14-2 separately by pin 14-1 separately respectively, the other end of two upper connecting rod 14-2 is contained in respectively in lower connecting rod 14-4 hole separately, all there is external thread two upper connecting rod 14-2 upper ends, set nut 14-3 by separately tightens up upper connecting rod 14-2, two lower connecting rod 14-4 are vertically fixed on base 14-5, four pulley 14-6 are installed below base 14-5, separator tube valve connector 9 be can facilitate, the filling of body 8 and equipment displacement, maintenance etc. facilitated.By adjusting lock nut 14-3, but the height of adjusting cylinders support 14, thus by adjusting power valve 6 bracket adjustment emission angle the time, the height of the height of adjusted in concert high-pressure cylinder 12 and hush pipe 1, keep the angle one of whole device to make peace stable.
As shown in Figure 6, described power valve support 15 comprises: two pin 15-1, support bar 15-2, fixed bar 15-3, register pin 15-4, base 15-5, power valve 6 bottom surfaces are connected with the end of fixed bar 15-3 and the end of support bar 15-2 by pin 15-1 respectively, the other end of fixed bar 15-3 is connected with base 15-5, have equally spaced aperture on the other end of support bar 15-2, the other end of support bar 15-2 is inserted through fixed bar 15-3, register pin 15-4 positions by the aperture on fixed bar 15-3 hole and support bar 15-2, select the position in the different holes on support bar 15-2 to coordinate with register pin 15-4, can make power valve 6 realize the inclination of different angles, thereby realize different immersion angle degree body emission experiment.
The course of work of the present invention is as follows:
Before experiment starts, mobile air cylinder support 14, open pipe valve connector 9, body 8 is put into to power valve 6, utilize phase magnet 7 that body 8 is fixed to the experiment desired location, locking tube valve connector 9, then live the body ejaculation hole of hush pipe 1 left end with the diaphragm seal of sealing tinfoil, put into again the water of the required certain depth of experiment in water tank 16, opening high-pressure air source 13 is filled into high pressure nitrogen in high-pressure cylinder 12, make the pressure of high-pressure cylinder 12 reach the force value that experiment needs, open solenoid valve 10, gases at high pressure promote body 8 high-speed motions, enter aiutage 3 inside after the driven compression of body 8 front end gas in power valve 6, arrive hush pipe 1 inside by the vent port on aiutage 3 tube walls, then the gas outlet 2 by hush pipe 1 top enters in atmosphere, the sealing tinfoil film that the body 8 of high-speed motion breaks through hush pipe 1 front end subsequently enters in water tank 16, body 8 surfaces at 70m/s ~ 100m/s high-speed motion form supercavity, carry out the experiment of undisturbed section high-velocity projectiles supercavity flow.
By adjusting the angle of power valve support 15, open set nut 14-3 simultaneously, the height of adjusting cylinders support 14 and hush pipe support 17, can adjust the emission angle of power valve 6 and whole system, realizes under different emission angles that body high-velocity projectiles under water produces the experimental study of supercavity.By controlling the water level control apparatus in water tank 16 lower left corners, can change water level in water tank, realize high-velocity projectiles experimental study under different water levels.
Through said method, use above-mentioned test unit can realize differing tilt angles underwater emission body, the high speed of giving birth to for the miscarriage of front end undisturbed enters water-jet bullet supercavity generation experimental study.
Claims (4)
1. the generating means of supercavity under water that noiseless cavity flow produces, is characterized in that: comprise hush pipe (1), gas outlet (2), aiutage (3), holding screw (4), seal tube (5), power valve (6), phase magnet (7), body (8), pipe valve connector (9), solenoid valve (10), cylinder valve connector (11), high-pressure cylinder (12), high-pressure air source (13), air cylinder support (14), power valve support (15), water tank (16), hush pipe support (17), water tank (16) front and back is provided with the observation form of machine glass, water tank (16) sidewall has flange hole, flange hole is equipped with seal tube (5) outward, one end of power valve (6) inserts an end that is arranged on the aiutage (3) in hush pipe (1) in water tank (16) by seal tube (5), by holding screw (4) joint noise reduction cylinder (1) and aiutage (3), the top of hush pipe (1) has venthole, venthole connects gas outlet (2), the front end bottom of hush pipe (1) has osculum, the front portion of hush pipe (1) has body and penetrates hole, it is inner that the hush pipe support (17) of adjustable noise elimination cylinder (1) height is fixed on water tank (16), the other end of power valve (6) is by pipe valve connector (9), solenoid valve (10), cylinder valve connector (11), with high-pressure cylinder (12), be connected, high-pressure cylinder (12) connects high-pressure air source (13), phase magnet (7) is placed on the external cylindrical surface of the other end of power valve (6), another stomidium of the power valve (6) corresponding with phase magnet (7) is in-built body (8), and the air cylinder support (14) of the power valve support (15) of adjustable power valve (6) angle and adjustable height air cylinder (12) height all fixes on the ground.
2. the generating means of supercavity under water that a kind of noiseless cavity flow according to claim 1 produces, it is characterized in that: described aiutage (3) is stepped cylindrical shell, aiutage (3) holds greatly cylindrical shell and hush pipe (1) to closely cooperate, upper and lower Ge Kai mono-threaded hole of large end cylindrical shell, aiutage (3) is connected power valve (6) with the holding screw for threaded hole (4) of hush pipe (1) afterbody, has the vent port that four rows distribute along circumference equal dividing on aiutage (3) small end cylindrical shell.
3. the generating means of supercavity under water that a kind of noiseless cavity flow according to claim 1 produces, it is characterized in that, described air cylinder support (14) comprising: two pins (14-1), two upper connecting rods (14-2), two set nuts (14-3), two lower connecting rods (14-4), base (14-5), four pulleys (14-6); The high-pressure cylinder bottom surface is connected with an end of upper connecting rod (14-2) separately by pin (14-1) separately respectively, the other end of two upper connecting rods (14-2) is contained in respectively in lower connecting rod (14-4) hole separately, all there is external thread two upper connecting rods (14-2) upper end, set nut (14-3) by separately tightens up upper connecting rod (14-2), it is upper that two lower connecting rods (14-4) are vertically fixed on base (14-5), four pulley (14-6 is installed below base (14-5).
4. the generating means of supercavity under water that a kind of noiseless cavity flow according to claim 1 produces, it is characterized in that, described power valve support (15) comprising: two pins (15-1), support bar (15-2), fixed bar (15-3), register pin (15-4), base (15-5), power valve (6) bottom surface is connected with an end of support bar (15-2) with an end of fixed bar (15-3) by pin (15-1) respectively, the other end of fixed bar (15-3) is connected with base (15-5), have equally spaced aperture on the other end of support bar (15-2), the other end of support bar (15-2) is inserted through fixed bar (15-3), register pin (15-4) positions by the aperture on fixed bar (15-3) hole and support bar (15-2), select the position in the different holes on support bar (15-2) to coordinate with register pin (15-4), can make power valve (6) realize the inclination of different angles.
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Cited By (14)
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| CN104101478A (en) * | 2014-06-24 | 2014-10-15 | 西北工业大学 | Structure immersing experiment emission device |
| CN104359650A (en) * | 2014-10-30 | 2015-02-18 | 中国空气动力研究与发展中心低速空气动力研究所 | Supercavity testing device |
| CN106837887A (en) * | 2017-03-14 | 2017-06-13 | 浙江理工大学 | The liquid ejection device of injection Parameter adjustable |
| CN108426696A (en) * | 2017-12-29 | 2018-08-21 | 西北工业大学 | A kind of works of practicality enters water experiment emission system |
| CN109141813A (en) * | 2018-08-24 | 2019-01-04 | 浙江大学 | A kind of ring-type Cavity bubble generation device |
| CN109974966A (en) * | 2019-03-15 | 2019-07-05 | 哈尔滨工程大学 | A kind of object multi-angle high speed of high pressure gas control enters water experimental provision |
| CN110132536A (en) * | 2019-05-20 | 2019-08-16 | 中国石油大学(华东) | Sail body underwater emission experimental provision for supercavitation mechanism study |
| CN111397842A (en) * | 2020-03-30 | 2020-07-10 | 中国科学院力学研究所 | Mobile launching underwater experimental device |
| CN112444169A (en) * | 2019-09-01 | 2021-03-05 | 南京理工大学 | Projectile flume with muffled launch section |
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| CN104101478A (en) * | 2014-06-24 | 2014-10-15 | 西北工业大学 | Structure immersing experiment emission device |
| CN104359650A (en) * | 2014-10-30 | 2015-02-18 | 中国空气动力研究与发展中心低速空气动力研究所 | Supercavity testing device |
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