CN208671817U - A high-speed water-entry launching device - Google Patents

A high-speed water-entry launching device Download PDF

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CN208671817U
CN208671817U CN201821057234.XU CN201821057234U CN208671817U CN 208671817 U CN208671817 U CN 208671817U CN 201821057234 U CN201821057234 U CN 201821057234U CN 208671817 U CN208671817 U CN 208671817U
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pressure
gas
chamber
valve
exhaust
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刘谋斌
黄超
翁翕
李锦涛
张智琅
杨朋英
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Peking University
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Peking University
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Abstract

The utility model provides a kind of high speed water entry launcher, is suitable for sphere and cylindrical body, comprising: shell, inside are plenum chamber；Discharge chamber is set in the plenum chamber, is provided with gas control check valve；Piston rod, one end can be slided along the discharge chamber, and the other end is provided with valve head, can the emission port of the shell be sealed or be opened；Air inlet pipeline and gas exhaust piping are connected to the discharge chamber；Transmitting tube, one end are connected to the emission port, the fixed shelling ring of the other end, and the bullet support embedded with bullet can be slided in the transmitting tube, and the shelling ring is for the bullet support to be limited in the transmitting tube.

Description

A kind of high speed water entry launcher
Technical field
The utility model relates to belong to high speed to enter water emission experiment device field, and in particular to a kind of variable velocity, can Varied angle, suitable for sphere/cylindrical body high speed water entry launcher.
Background technique
In recent years, China proposes the strategic objective of construction ocean power, and the development of ocean engineering and science and technology receives extensively General concern." entering water " refers to the phenomenon that object is entered with certain speeds cross liquid-vapor interface in liquid, is widely present in the modern times In the fields such as military and civilian aviation and navigation, there are important military affairs and engineering background.For example, air-drop or rocket assist During torpedo invades fluid media (medium) from air dielectric, it is faced with structural failure, device failure after impact, neglects and flutters and trajectory The problems such as out of control.For another example, the bullet of high-speed motion, bullet enter in water from air, will generate vacuole in water, and change fortune Dynamic track.These objects generally all have the feature of sphere, cylindrical body.Problem of water entry is to be related to solid, liquid, gas three's phase mutual coupling A kind of physical process of complexity of cooperation, in addition to being related to the transient state Impact Problems of object and liquid level, object may be used also when entering water Can Xiang Shuizhong be involved in air and form vacuole, liquid again can be to object application various reaction forces when cavity closure, and these problems are all With strong non-linear, theoretical research has great difficulty, and experiment is still important research means.
In the prior art, " a kind of works enters water experiment emitter " is that object emission is gone out using thrust spring, However, this radiation pattern is typically only capable to the lesser object of quality accelerating to~101M/s magnitude, is not used to high-speed object (such as torpedo, bullet simulate component) enters water experimental study.
Utility model content
(1) technical problems to be solved
For overcome the deficiencies in the prior art, the utility model uses Gas Gun emission principle, passes through control input load The size of air pressure adjusts the emission rate of object, propose it is a kind of can be used for sphere/cylindrical body high speed water entry launcher, The device can enter the speed and angle of water by adjustment structure object on a large scale, meet required precision required for testing, and With preferable operability.
(2) technical solution
The utility model provides a kind of high speed water entry launcher, is suitable for sphere and cylindrical body, comprising: shell, it is interior Portion is plenum chamber；Discharge chamber is set in the plenum chamber, is provided with gas control check valve；Piston rod, one end can be along institutes Discharge chamber sliding is stated, the other end is provided with valve head, can the emission port of the shell be sealed or be opened；Air inlet pipeline and exhaust pipe Road is connected to the discharge chamber；Transmitting tube, one end are connected to the emission port, the fixed shelling ring of the other end, the bullet embedded with bullet Support can be slided in the transmitting tube, and the shelling ring is for the bullet support to be limited in the transmitting tube.
In some embodiments of the utility model, the bullet, which props up, to be placed in the emission port；High pressure gas is described in Air inlet pipeline enters the discharge chamber, and the piston rod is mobile to the emission port direction under the action of high pressure gas, so that The valve head compresses the emission port；When the gas pressure in discharge chamber reaches a threshold value, gas control check valve is opened, discharge chamber Interior high pressure gas injects plenum chamber through gas control check valve, closes air inlet when the indoor pressure of high pressure gas reaches predetermined value Valve；Gas exhaust piping is opened, the gas pressure in discharge chamber reduces, and piston rod makes valve head leave transmitting to exhaust cavity direction promotion Mouthful, the emitted mouth of the indoor high pressure gas of high pressure gas enters transmitting tube, and bullet support and bullet is pushed to move along transmitting tube, bullet support by It is stayed in transmitting tube to shelling ring blocking, bullet is emitted.
In some embodiments of the utility model, further includes: pressure gauge and pressure reducing valve are installed on shell；Pressure gauge For measuring the indoor gas pressure of high pressure gas, pressure reducing valve is for adjusting the indoor gas pressure of high pressure gas.
In some embodiments of the utility model, the air inlet pipeline includes: gas access and intake valve, gas access It is connected to by intake valve, high-pressure gas pipeline with discharge chamber.
In some embodiments of the utility model, gas exhaust piping includes: exhaust valve and gas vent, and gas vent passes through Exhaust valve, high-pressure gas pipeline are connected to discharge chamber.
In some embodiments of the utility model, it is additionally provided with spring in the discharge chamber, when piston rod slides to exhaust When chamber, for preventing direct collision of the piston rod to shell.
In some embodiments of the utility model, the gas control check valve is for preventing gas from entering row from plenum chamber Air cavity allows gas to enter plenum chamber from discharge chamber.
In some embodiments of the utility model, the extending direction of the transmitting tube and the angle adjustable of horizontal plane, To adjust the immersion angle degree of bullet.
(3) beneficial effect
It can be seen from the above technical proposal that the utility model has the following beneficial effects:
The high speed water entry launcher of the utility model can adjust object in wide range and enter according to actual needs The speed of water provides experiment condition for objects at high speed water impact and flow dynamic characteristic research, to improvement structural body, bullet Enter water characteristic with huge realistic meaning, and there is good repeatability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment high speed water entry launcher；
Fig. 2 is the bullet speed curve exemplary diagram that quality is two kinds of bullets of 20g and 100g.
[symbol description]
The gas access 1-；2- intake valve；3- exhaust valve；4- gas vent；5- discharge chamber；6- gas control check valve；7- high pressure Gas chamber；8- shell；9- piston rod；10- valve head；11- bullet；12- bullet support；13- transmitting tube；14- shelling ring；15- pressure gauge； 16- spring；17- high-pressure gas pipeline；18- emission port；19- exhaust chamber.
Specific embodiment
Below in conjunction with the attached drawing in embodiment and embodiment, the technical scheme in the embodiment of the utility model is carried out clear Chu, complete description.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than whole realities Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work The every other embodiment obtained, fall within the protection scope of the utility model.
An embodiment of the present invention provides a kind of high speed water entry launcher, is particularly suitable for sphere/cylindrical body, such as Shown in Fig. 1, comprising: air intake-exhaust component, high-pressure chamber component and transmitting pipeline.
High-pressure chamber component includes: shell 8, exhaust chamber 19 and piston component.
It is plenum chamber 7 inside shell 8.
Exhaust chamber 19 is set in plenum chamber 7, is fixed on the side wall of 8 side of shell, and exhaust chamber 19 is hollow Column structure, inside are discharge chamber 5.One end connection of discharge chamber 5 penetrates the high-pressure gas pipeline 17 of the shell side side wall, exhaust Chamber 5 is connected to by the high-pressure gas pipeline 17 with air intake-exhaust component.Exhaust chamber 19 is provided with gas control check valve 6.Gas control list Gas transporting between discharge chamber 5 and plenum chamber 7 is controlled to valve 6.Gas can not pass through gas control check valve from plenum chamber 7 6 enter discharge chamber 5, and after the gas pressure in discharge chamber 5 is more than certain value, gas can be entered high by gas control check valve 6 Plenum chamber 7.
Piston component includes: piston rod 9 and valve head 10.One end of piston rod 9 can be slided along discharge chamber 5, other end setting There is valve head 10.Shell 8 offers emission port 18 with exhaust chamber 19 opposite side, and the bullet support 12 for holding bullet 11 is placed In emission port 18.Discharge chamber 5, piston rod 9, valve head 10 and emission port 18 are coaxially disposed.Piston rod 9 can along by discharge chamber 5 to The direction of emission port 18 is slided, and valve head 10 can block or open emission port 18, and the emission port 18 is sealed or opened.Row Spring 16 is additionally provided in air cavity 5, when piston rod 9 slides to discharge chamber 5, for preventing directly the touching to shell 8 of piston rod 9 It hits.
Air intake-exhaust component includes: gas access 1, intake valve 2, exhaust valve 3, gas vent 4.Gas access 1 by into Air valve 2 is connected to high-pressure gas pipeline 17, and gas vent 4 is connected to by exhaust valve 3 with high-pressure gas pipeline 17, and discharge chamber 5 is logical It crosses gas access 1 and is connected to external air source, the external world is connected to by gas vent 4.
Transmitting pipeline includes: transmitting tube 13 and shelling ring 14.Transmitting tube 13 and emission port 18 are coaxially disposed.Transmitting tube 13 One end is connected to emission port 18, the fixed shelling ring 14 of the other end.Bullet support 12 can be slided in transmitting tube 13, and shelling ring 14 is used for bullet Support 12 is limited in transmitting tube 13.
High speed water entry launcher further include: pressure gauge 15 and pressure reducing valve are installed on shell 8.Pressure gauge 15 is for surveying The pressure in plenum chamber 7 is measured, and provides specific pressure value estimating for experiment parameter.Pressure reducing valve is for adjusting high pressure gas Pressure in room 7.
The high speed water entry launcher of the utility model is using Gas Gun technical principle, using in plenum chamber 7 High pressure gas drives bullet 11 and bullet support 12 to accelerate along transmitting tube 13, and bullet support 12 is locked when passing through shelling ring 14, Bullet 11 flies out from 13 high speed of transmitting tube, to realize that sphere/cylindrical body high speed enters the experiment transmitting of water.
High speed water entry launcher derives object emission velocity computing model according to following interior ballistics theories, by calculating not The theoretical bullet speed curve of homogenous quantities object obtains the corresponding relationship of transmitting pressure and emission rate, and then can be used for object and enter The control of water speed.Bullet 11 can be expressed from the next in the differential equation of motion of transmitting tube 13:
In formula: x is the displacement that bullet 11 moves,WithRespectively indicate the velocity and acceleration of the movement of bullet 11；M is bullet The quality of ball 11；M '=m+M/3 is the bullet amendment quality for introducing bullet rear air velocity and influencing, and M is in plenum chamber 7 Gaseous mass；V0For the volume of plenum chamber 7；Y is the polytropic index of gas；p1For the gas pressure being filled in plenum chamber 7；S For the sectional area of transmitting tube 13；Dynamic friction coefficient of the μ between bullet 11 and transmitting tube 13；C0For the velocity of sound of gas under normal pressure；p0For Initial atmosphere pressure.
The high speed water entry launcher of the utility model realizes sphere/cylindrical body by pressurizeing and discharging two operations Transmitting.
Pressurized operation are as follows: bullet 11 is embedded in bullet support 12, bullet support 12 is placed in emission port 18.Exhaust valve 3 is closed, is opened Intake valve 2, the gas (such as high pressure nitrogen) that external air source provides enter discharge chamber 5 through intake valve 2 from gas access 1.Exhaust Pressure in chamber 5 constantly rises, and it is mobile to 18 direction of emission port to push piston rod 9, and valve head 10 is pressed on emission port 18. When the pressure in discharge chamber 5 rises to a threshold value, gas control check valve 6 is opened, and the high pressure gas in discharge chamber 5 is unidirectional through gas control Valve 6 injects plenum chamber 7.During high pressure gas injects plenum chamber 7, according to above-mentioned transmitting pressure and emission rate Corresponding relationship passes through the pressure in pressure gauge 15 and decompression valve regulation plenum chamber 7 to specified numerical value.It is closed after pressurization Intake valve 2.
Release operation are as follows: release operation is realized by the opening of exhaust valve 3.After exhaust valve 3 is opened, in discharge chamber 5 Pressure reduces rapidly, and forms pressure difference between plenum chamber 7 and discharge chamber 5.Piston rod 9 is to 5 side of discharge chamber under the action of pressure difference To promotion, spring 16 can form piston rod 9 and buffer, and avoid its direct collision to shell 8.Valve head 10 leaves emission port 18 Afterwards, the emitted mouth 18 of high pressure gas in plenum chamber 7 enters transmitting tube 13, and pushes bullet support 12 and bullet 11 rapidly along transmitting Pipe 13 moves.When bullet support 12 and bullet 11 move to shelling ring 14, bullet support 12 is stayed in transmitting tube 13 by blocking, and bullet 11 Since inertia continues to move out, entire transmitting movement is so far completed.
The position of transmitting tube 13 be it is adjustable, by adjusting the angle of its extending direction and horizontal plane, to adjust bullet The immersion angle degree of ball 11.The use of the utility model is not influenced substantially by installation site, and can be fixed on arbitrary plane makes With.
The utility model is as shown in Figure 2 to the emissivities of sphere or cylindrical body.It is high by adjusting using the utility model Pressure in plenum chamber 7, can easily by quality be 20g sphere or cylindrical body with 100~102The velocity magnitude of m/s is sent out Penetrate, by quality be 100g sphere or cylindrical body with 100~101The velocity magnitude of m/s emits.By adjusting the length of transmitting tube 13 The parameters such as degree, section, additionally it is possible to further increase the range of object emission speed.
So far, attached drawing is had been combined the utility model is described in detail.According to above description, those skilled in the art Member should have clear understanding to the utility model.
It should be noted that in attached drawing or specification text, the implementation for not being painted or describing is affiliated technology Form known to a person of ordinary skill in the art, is not described in detail in field.In addition, the above-mentioned definition to each element and not only limiting Various specific structures, shape or the mode mentioned in embodiment, those of ordinary skill in the art can carry out simply more it Change or replaces, such as:
(1) direction term mentioned in embodiment, such as "upper", "lower", "front", "rear", "left", "right" etc. are only ginsengs The direction of attached drawing is examined, is not used to limit the protection scope of the utility model；
(2) above-described embodiment can be based on the considerations of design and reliability, and the collocation that is mixed with each other uses or and other embodiments Mix and match uses, i.e., the technical characteristic in different embodiments can freely form more embodiments.
Particular embodiments described above has carried out into one the purpose of this utility model, technical scheme and beneficial effects Step is described in detail, it should be understood that being not limited to this foregoing is merely specific embodiment of the utility model Utility model, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done should all wrap Containing being within the protection scope of the utility model.

Claims (8)

1.一种高速入水发射装置，适用于球体和圆柱体，其特征在于，包括：1. a high-speed water-entry launching device, suitable for sphere and cylinder, is characterized in that, comprises: 壳体，内部为高压气室；The shell, the inside is a high-pressure air chamber; 排气腔，设置于所述高压气室中，设置有气控单向阀；The exhaust chamber is arranged in the high-pressure air chamber, and is provided with an air-controlled one-way valve; 活塞杆，其一端可沿所述排气腔滑动，另一端设置有阀头，可将所述壳体的发射口密封或打开；a piston rod, one end of which can slide along the exhaust chamber, and the other end is provided with a valve head, which can seal or open the launch port of the casing; 进气管路和排气管路，与所述排气腔连通；an intake pipeline and an exhaust pipeline, communicated with the exhaust chamber; 发射管，其一端连通所述发射口，另一端固定脱壳环，嵌有弹丸的弹托可在所述发射管中滑动，所述脱壳环用于将所述弹托限制在所述发射管中。A launch tube, one end of which is connected to the launch port, and the other end is fixed with a shelling ring, in which the projectile holder embedded with the projectile can slide, and the shelling ring is used to limit the shell support to the launching tube. in the tube. 2.如权利要求1所述的高速入水发射装置，其特征在于，2. The high-speed water-entry launching device as claimed in claim 1, characterized in that, 所述弹托放置于所述发射口中；the bomb holder is placed in the launch port; 高压气体自所述进气管路进入所述排气腔，所述活塞杆在高压气体的作用下向所述发射口方向移动，以使所述阀头压紧所述发射口；The high-pressure gas enters the exhaust chamber from the intake pipeline, and the piston rod moves toward the launching port under the action of the high-pressure gas, so that the valve head presses the launching port; 当排气腔内的气体压力达到一阈值时，气控单向阀打开，排气腔内的高压气体经气控单向阀注入高压气室，待高压气室内的压力达到预定数值时关闭进气阀；When the gas pressure in the exhaust chamber reaches a threshold value, the air-controlled check valve opens, and the high-pressure gas in the exhaust chamber is injected into the high-pressure air chamber through the air-controlled one-way valve. When the pressure in the high-pressure air chamber reaches a predetermined value, the air inlet is closed air valve; 打开排气管路，排气腔内的气体压力降低，活塞杆向排气腔方向推动使阀头离开发射口，高压气室内的高压气体经发射口进入发射管，并推动弹托和弹丸沿发射管运动，弹托受到脱壳环阻挡留在发射管内，弹丸被射出。Open the exhaust pipe, the gas pressure in the exhaust chamber is reduced, the piston rod pushes the direction of the exhaust chamber to make the valve head leave the launch port, the high-pressure gas in the high-pressure gas chamber enters the launch tube through the launch port, and pushes the shell and the projectile along the edge The launch tube moves, the shell is blocked by the shelling ring and stays in the launch tube, and the projectile is shot out. 3.如权利要求1所述的高速入水发射装置，其特征在于，还包括：3. The high-speed water-entry launching device as claimed in claim 1, further comprising: 压力表及减压阀，安装于壳体上；压力表用于测量高压气室内的气体压力，减压阀用于调节高压气室内的气体压力。The pressure gauge and the pressure reducing valve are installed on the shell; the pressure gauge is used to measure the gas pressure in the high-pressure gas chamber, and the pressure-reducing valve is used to adjust the gas pressure in the high-pressure gas chamber. 4.如权利要求1所述的高速入水发射装置，其特征在于，所述进气管路包括：气体入口和进气阀，气体入口通过进气阀、高压气体管路与排气腔连通。4 . The high-speed water entry launching device according to claim 1 , wherein the air inlet pipeline comprises: a gas inlet and an air inlet valve, and the gas inlet is communicated with the exhaust chamber through the air inlet valve and the high-pressure gas pipeline. 5 . 5.如权利要求1所述的高速入水发射装置，其特征在于，排气管路包括：排气阀和气体出口，气体出口通过排气阀、高压气体管路与排气腔连通。5 . The high-speed water entry launching device according to claim 1 , wherein the exhaust pipeline comprises: an exhaust valve and a gas outlet, and the gas outlet communicates with the exhaust chamber through the exhaust valve and the high-pressure gas pipeline. 6 . 6.如权利要求1所述的高速入水发射装置，其特征在于，所述排气腔内还设置有弹簧，当活塞杆滑向排气腔时，用于阻止活塞杆对壳体的直接碰撞。6 . The high-speed water-entry launching device according to claim 1 , wherein a spring is further provided in the exhaust chamber to prevent the piston rod from directly colliding with the casing when the piston rod slides toward the exhaust chamber. 7 . . 7.如权利要求1所述的高速入水发射装置，其特征在于，所述气控单向阀用于阻止气体从高压气室进入排气腔，允许气体从排气腔进入高压气室。7 . The high-speed water-entry launching device according to claim 1 , wherein the gas-controlled one-way valve is used to prevent gas from entering the exhaust chamber from the high-pressure gas chamber, and allow gas to enter the high-pressure gas chamber from the exhaust chamber. 8 . 8.如权利要求1所述的高速入水发射装置，其特征在于，所述发射管的延伸方向与水平面的角度可调节，从而调节弹丸的入水角度。8 . The high-speed water-entry launching device according to claim 1 , wherein the angle between the extending direction of the launching tube and the horizontal plane can be adjusted, so as to adjust the water-entry angle of the projectile. 9 .
CN201821057234.XU 2018-07-04 2018-07-04 A high-speed water-entry launching device Active CN208671817U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108981505A (en) * 2018-07-04 2018-12-11 北京大学 A kind of high speed water entry launcher
CN113091532A (en) * 2021-03-11 2021-07-09 哈尔滨工程大学 Compound driven second grade projectile body accelerating device and experiment platform

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108981505A (en) * 2018-07-04 2018-12-11 北京大学 A kind of high speed water entry launcher
CN113091532A (en) * 2021-03-11 2021-07-09 哈尔滨工程大学 Compound driven second grade projectile body accelerating device and experiment platform
CN113091532B (en) * 2021-03-11 2021-09-21 哈尔滨工程大学 Compound driven second grade projectile body accelerating device and experiment platform

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