CN102818734B - Vacuum high-speed emitter - Google Patents
Vacuum high-speed emitter Download PDFInfo
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- CN102818734B CN102818734B CN201210273917.XA CN201210273917A CN102818734B CN 102818734 B CN102818734 B CN 102818734B CN 201210273917 A CN201210273917 A CN 201210273917A CN 102818734 B CN102818734 B CN 102818734B
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Abstract
The invention discloses a vacuum high-speed emitter. The vacuum high-speed emitter comprises a puncher pin (1), a sealing flange (2), a slide block (3), a support (4), an emission pipe (5), a support pillar flange (6), a high-pressure cylinder (7), an emission piston (8), a sealing plug (9), a support flange (10) and a vacuum device (11). The slide block (3) is arranged in the emission pipe (5). The puncher pin (1) and the sealing flange (2) installed on a left side of the emission pipe (5) form a sealing structure. The high-pressure cylinder (7) is installed on a right side of the emission pipe (5). The high-pressure cylinder (7), the emission piston (8) and the sealing plug (9) form a sealing structure at the right side of the emission pipe (5). Two sides of a cavity of the emission pipe (5) are sealed so that a vacuum cavity is formed. When the slide block (3) is emitted, the sealing structure of the emission piston (8) and the sealing plug (9) is opened; the slide block (3) is accelerated under the pushing action of an external atmosphere; and the slide block (3) impacts the puncher pin (1) so that the puncher pin (1) gets a speed by transmission and the accelerated puncher pin (1) finishes shock forming. The vacuum high-speed emitter can solve the problem that a slide block of the existing high-pressure emitter can not be accelerated at a constant speed, and can improve impact effects. The vacuum high-speed emitter utilizes air pressure to control emission so that control is simpler.
Description
Technical field
The present invention relates to a kind of emitter, especially a kind of emitter for high speed impact forming experiment, specifically a kind of vacuum hypervelocity launcher.
Background technology
As everyone knows, high speed impact can make material be shaped under high deformation velocity, and high speed impact forming experiment can complete some shapings that are difficult to the special workpiece of realizing by conventional method.Wherein drift speed impact effect has important impact, but current hypervelocity launcher exists drift in predetermined length power valve flight course, to fail fully to accelerate the problem of (drift become accelerate), and drift does not reach predetermined speed will affect impact effect.The rear portion of this outer ram is promoted by gases at high pressure, and the air resistance that drift flies forward also can reduce drift speed.Along with drift flying distance in power valve increases, the air pressure at drift rear portion reduces gradually, and the air before drift hinders effect can be more obvious.
The gas big gun emission test research of the large-scale Hopkinson bar demonstration of the paper as Zhou Liduan, Qu Jianbo, Huang Wenyun: φ 100.In paper, mention Hopkinson bar gas big gun emitter.As a kind of general hypervelocity launcher.When transmitting, add high pressure to Gas Gun inside, utilize gases at high pressure to promote impact bar transmitting, bullet is obtained at a high speed and impact.But in impact bar flight course, because the high-pressure gas pressure at impact bar rear portion can decline along with its increase that takies power valve volume, the air pressure at impact bar rear portion declines, make the ever-reduced variable accelerated motion of impact bar accelerator acceleration, reduce acceleration effect, affect impact bar final speed, reduce impact forging effect.As high pressure gas emitter, Hopkinson bar gas big gun emitter can not solve air resistance before impact bar and lower the problem of impact bar speed.
Carry out the device of launching shock by vacuum, can not encounter the problem of high pressure gas transmitting.Can solve the problem that air resistance before impact bar lowers impact bar speed.The device that carries out launching shock by vacuum is discussed to some extent in paper, but installs not quite clearly, and launching technique haves much room for improvement.As Chen Jiaan, thunder are brand-new, Jiang Shu shouts, the paper of He Xiaoqi, Qiao Jingwu: Vacuum Gun research.The emission principle of the Vacuum Gun that this paper provides is the transmitting of carrying out drift by vacuum.Before test, power valve is sealed at both ends, and vacuum system vacuumizes vacuum plant and power valve.When transmitting, take out bullet is discharged with spacer pin, expeimental cartridge is linear accelerating under the effect of atmospheric pressure, until enter recovery tube.This device bullet discharges mechanism and uses spacer pin, the defect of sealing when system is vacuumized, and the leakage of power valve air while causing pellet injection, reduces acceleration effect.Secondly, application spacer pin control pellet injection, operation inconvenience affects efficiency in the time repeatedly repeating to test.
Summary of the invention
While the object of the invention is to utilize gases at high pressure to launch for existing hypervelocity launcher, drift rear portion gaseous tension reduces along with the flight of drift, thereby cause reducing of drift acceleration, affect the problem of drift speed and impact effect, design a kind of accurate uniformly accelerated motion, the vacuum hypervelocity launcher of the transmitting application pneumatic control to drift simultaneously, to avoid air resistance before drift to affect the defect of drift speed.
Technical scheme of the present invention is:
A kind of vacuum hypervelocity launcher, it comprises power valve 5, slide block 3 and vacuum generating device 11, the transmitting terminal that it is characterized in that described power valve 5 is sealedly connected with seal flange 2, in the inner chamber of seal flange 2, be processed with the axial step shape through hole being connected with power valve 5, drift 1 is arranged in the axial step shape through hole of seal flange 2, step surface in one end of drift 1 and seal flange 2 offsets and realizes unidirectional location, make seal flange 2 realize butt-end packing simultaneously, the other end of drift 1 is free state and contacts with air, on seal flange 2, be also processed with radial direction through hole, this radial direction through hole vacuumizes with one end that vacuum generating device 11 is connected to realize power valve 5 by connecting tube, the percussion end of power valve 5 is provided with fore-set flange 6, the center of fore-set flange 6 is provided with protruding fore-set 601, the periphery of fore-set 601 is provided with axially extending bore 602, on fore-set flange 6, be also processed with and be communicated with axially extending bore 602, for connecting the radial axle vacuum hole 603 of vacuum generating device 11, in the outside of fore-set flange 6, high-pressure cylinder 7 is installed, the inner chamber of high-pressure cylinder 7 is step-like structure, the inner of transmitting piston 8 is arranged in the little internal diameter chamber of high-pressure cylinder 7, the outer end of transmitting piston 8 is provided with an end face boss 801 that can only move in the large diameter chamber of high-pressure cylinder 7, the major diameter inner cavity surface of high-pressure cylinder 7, step surface, between the outside surface of transmitting piston 8 and end face boss 801, form a damping cavity B, damping cavity B is connected with operation valve A, on the inner face of transmitting piston 8, be provided with the end face through hole 802 passing through for the fore-set 601 on fore-set flange 6, match with this end face through hole 802 in one end of sealing-plug 9, the other end of sealing-plug 9 is inserted in the pilot hole post 101 of pivot flange 10, pivot flange 10 is fixed on the outer face of high-pressure cylinder 7, is processed with the axially extending bore 102 that is communicated with transmitting piston 8 inner chambers and atmosphere on pivot flange 10, described slide block 3 is positioned at power valve 5 and offsets with the end face of fore-set flange 6.
The quantity of the axially extending bore 602 on described fore-set flange 6 is three, and they are distributed on fore-set 601 around.
Uniformly on described pivot flange 10 be processed with three axially extending bores 102.
Described power valve is bearing in support 4 near one end of seal flange 2.
Described high-pressure cylinder 7 is processed with the through hole that is communicated with the radial axle vacuum hole 603 on fore-set flange 6, and this through hole is connected with the vacuum-pumping tube of vacuum generating device 11.
The length of described power valve 5 is not less than 10 meters.
Beneficial effect of the present invention:
1. utilization of the present invention vacuumizes power valve and rear slider applies constant pressure, makes slide block obtain the accurate even acceleration of long-time straight line.Solve the general emitter that utilizes gases at high pressure to launch, slide block rear portion pressure accelerates to reduce with slide block, make slide block do the accelerated motion that acceleration reduces, cause and accelerate inadequate problem, avoided the defect that in gases at high pressure hypervelocity launcher, slide block can not fully accelerate in power valve.In apparatus of the present invention, the length that the slide block in accelerator can make full use of power valve accelerates to high speed, finally realizes high speed impact.
2. the present invention vacuumizes power valve, the slide block front and back transmitting tube chamber that is positioned at power valve inside is vacuumized.Then slide block rear portion is applied to constant pressure, make slide block in the time that preacceleration is flown, not be subject to the impact of air resistance.Avoid producing and utilize gases at high pressure to carry out hypervelocity launcher, because the transmitting mouth of pipe opens wide, cause slide block to be subject to the problem of air resistance to preacceleration flight.
3. device provided by the invention, triggers the motion that utilizes transmitting piston, make seal member automatic trip from, by the instantaneous constant air pressure slide block rear portion that is applied to, make slide block transmitting realize the instantaneity and the robotization that trigger.Trigger mechanism can ensure system instantaneous triggering in the good situation of sealing, has both avoided, because of the error of leaking gas and Time delay causes, making again the control of slide block transmitting more simple and convenient.
4. apparatus of the present invention can solve the problem that existing high pressure emitter slide block can not even acceleration, improve impact effect.In addition utilize air pressure control transmitting, make to control simpler.
Brief description of the drawings
Fig. 1 is contour structures schematic diagram of the present invention.
Fig. 2 is the cut-open view of Fig. 1.
Fig. 3 is the cut-open view that utilizes the device that vacuum launches under emission state.
Fig. 4 is the partial sectional view of fore-set flange of the present invention.
Fig. 5 is the right view of pivot flange of the present invention.
In figure: 1. drift; 2. seal flange; 3. slide block; 4. support; 5. power valve; 6. fore-set flange; 7. high-pressure cylinder; 8. transmitting piston; 9. sealing-plug; 10. pivot flange; 11. vacuum plants.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As Figure 1-5.
A kind of vacuum hypervelocity launcher, it comprises power valve 5, slide block 3 and vacuum generating device 11, the transmitting terminal of described power valve 5 is sealedly connected with seal flange 2, in the inner chamber of seal flange 2, be processed with the axial step shape through hole being connected with power valve 5, drift 1 is arranged in the axial step shape through hole of seal flange 2, step surface in one end of drift 1 and seal flange 2 offsets and realizes unidirectional location, make seal flange 2 realize butt-end packing simultaneously, the other end of drift 1 is auto state and contacts with air, on seal flange 2, be also processed with radial direction through hole, this radial direction through hole vacuumizes with one end that vacuum generating device 11 is connected to realize power valve 5 by connecting tube, the percussion end of power valve 5 is provided with fore-set flange 6, the center of fore-set flange 6 is provided with protruding fore-set 601, the periphery of fore-set 601 is provided with axially extending bore 602, on fore-set flange 6, be also processed with and be communicated with axially extending bore 602, for connecting the radial axle vacuum hole 603 of vacuum generating device 11, in the outside of fore-set flange 6, high-pressure cylinder 7 is installed, the inner chamber of high-pressure cylinder 7 is step-like structure, the inner of transmitting piston 8 is arranged in the little internal diameter chamber of high-pressure cylinder 7, the outer end of transmitting piston 8 is provided with an end face boss 801 that can only move in the large diameter chamber of high-pressure cylinder 7, the major diameter inner cavity surface of high-pressure cylinder 7, step surface, between the outside surface of transmitting piston 8 and end face boss 801, form a damping cavity B, damping cavity B is connected with operation valve A, on the inner face of transmitting piston 8, be provided with the end face through hole 802 passing through for the fore-set 601 on fore-set flange 6, match with this end face through hole 802 in one end of sealing-plug 9, the other end of sealing-plug 9 is inserted in the pilot hole post 101 of pivot flange 10, pivot flange 10 is fixed on the outer face of high-pressure cylinder 7, is processed with the axially extending bore 102 that is communicated with transmitting piston 8 inner chambers and atmosphere on pivot flange 10, described slide block 3 is positioned at power valve 5 and offsets with the end face of fore-set flange 6.
As shown in Fig. 1 Fig. 2.A device that utilizes vacuum to launch, it comprises drift 1, seal flange 2, slide block 3, support 4, power valve 5, fore-set flange 6, high-pressure cylinder 7, transmitting piston 8, sealing-plug 9, pivot flange 10, vacuum plant 11.From Fig. 1,2, the present invention can be divided into the hermetic unit in left side in function, middle accelerating part and the hermetic unit on right side.
Left side hermetic unit is by drift 1, and seal flange 2 forms.Drift 1 is positioned at seal flange 2, and drift 1 can move freely left in seal flange 2, and degree of freedom is to the right limited.Flange 2 sealings are arranged on power valve 5 left ends, and the two central shaft is coaxial.
Middle accelerating part is by slide block 3, and power valve 5 forms.Power valve 5 is hollow elongated tubular, and slide block 3 is close to the inwall of power valve 5 and can in power valve 5, be horizontally slipped.For ensureing the emission rate of slide block 3, requiring the length that slide block 3 accelerates is 8-12m, and the length of power valve 5 is 8-12m.(as Fig. 4) installed in the right-hand member of power valve 5 and fore-set flange 6 and high-pressure cylinder 7 sealings.
Right side hermetic unit is made up of fore-set flange 6, high-pressure cylinder 7, transmitting piston 8, sealing-plug 9, pivot flange 10.In the middle of high-pressure cylinder 7, be processed into stepped hole, transmitting piston 8 fits tightly installation with high-pressure cylinder 7, and the two central shaft is coaxial, and transmitting piston 8 can horizontally slip in high-pressure cylinder 7 inside.Transmitting piston 8 is hollow structure, and sealing-plug 9 stretches in transmitting piston 8, and the left end of sealing-plug 9 can be blocked transmitting piston 8.Pivot flange 10(is as Fig. 5) be arranged on the right-hand member of high-pressure cylinder 7, the pipe core of flange 10 is coaxial with high-pressure cylinder 7 inner chambers.Sealing-plug 9 is arranged in the pipe core of flange 10 and can horizontally slips, and flange 10 plays support guide effect to sealing-plug 9.
Described seal flange 2 is hollow structure, is processed with stepped hole, and radially processes downward Φ 10mm pipe adapter jack.
Fig. 4 is the cut-open view structure of fore-set flange 6.Fore-set flange 6 is discoid, and the cylinder that center is projection is 120 ° and is processed with three fan-shaped pylones, and radially processes diameter of phi 10mm through hole.
Described high-pressure cylinder 7 is axially middle is processed into stepped hole, and sidewall is radially processed pipe adapter jack upwards.Operation valve A is communicated with high-pressure cylinder 7 by pneumatic tube.
Fig. 5 is the front view of pivot flange 10.Pivot flange 10 is disc structure, and centre is outstanding long tube (as Fig. 2 structure).Around processing three through holes along 120 ° of center fore-sets, in the time that slide block 3 is launched, three through holes make outside air access to plant.
Vacuum plant 11 of the present invention is made up of vacuum tank and vacuum machine, by pneumatic tube, power valve 5 chambeies of left and right sealing is vacuumized.Vacuum plant 11 is communicated with seal flange 2, fore-set flange 6 respectively by operation valve D, pneumatic tube, and the pipe adapter of snorkel end is connected with the Ф 10mm pipe adapter jack of seal flange 2 and fore-set flange 6 respectively.Each sealing fitting part adopts rubber seal.
Emission process of the present invention is:
Fig. 2 is the state before emitter transmitting, closed control valve A.The inner chamber of high-pressure cylinder 7 is stepped holes, and left side is aperture, and right side is macropore.Transmitting piston 8 outer shafts are multidiameter.The stepped hole of high-pressure cylinder 7 and the outer wall corresponding matching of launching piston 8 multidiameters, just formed annular seal space B between transmitting piston 8 outer walls and macropore inwall.Annular seal space B seals the air of certain volume.
Slide block 3, in power valve 5 inside, forms annular seal space in the left side of slide block 3 by drift 1, flange 2, power valve 5, slide block 3
; Right side at slide block 3 forms annular seal space by slide block 3, support 4, power valve 5, fore-set flange 6, high-pressure cylinder 7, transmitting piston 8, sealing-plug 9
.In order to keep slide block 3 not change in the time vacuumizing at the transmitting site of power valve 5 right-hand members, open operation valve D couple
,
vacuumize, F is the air flow in annular seal space while vacuumizing simultaneously.Left side ambient pressure at device pushes away drift 1 to the right, and drift 1 is adjacent to sealing with flange 2; On the right side of device, outside air promotes sealing-plug 9, and sealing-plug 9 left ends hold out against the interior resonator end surface of transmitting piston 8, will launch piston 8 and promote left.Operation valve A closes, the transmitting piston 8 compression seal chamber B that moves to left, and because gas can not unlimited compression, transmitting piston 8 and sealing-plug 9 certain distance that moves to left will stop, and can not contact with the fore-set of fore-set flange 6.Now launch piston 8 and the interior resonator end surface of sealing-plug 9 fits tightly, sealing-plug 9 left ends sealing transmitting piston 8 left end face center pits, ambient atmos can not enter vacuum chamber.
Shown in Fig. 3, closed control valve D, open operation valve A, the pressure gas of annular seal space B is extruded by ambient pressure, and annular seal space B dwindles, transmitting piston 8 and sealing-plug 9 fast moving (as shown in Figure 2) left, after fore-set flange 6, fore-set flange 6 is by sealing-plug 9 jack-up, and transmitting piston 8 separates with sealing-plug 9, ambient atmos (it flows to as G) enters vacuum chamber, and slide block 3 is accelerated.Last high speed slide block 3 clashes into drift 1, makes drift 1 high speed ejecting device.
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.
Claims (4)
1. a vacuum hypervelocity launcher, it comprises power valve (5), slide block (3) and vacuum generating device (11), described slide block (3) is close to the inwall of power valve (5) and can in power valve (5), be horizontally slipped and can offset with the end face of fore-set flange (6), the transmitting terminal that it is characterized in that described power valve (5) is sealedly connected with seal flange (2), in the inner chamber of seal flange (2), be processed with the axial step shape through hole being connected with power valve (5), drift (1) is arranged in the axial step shape through hole of seal flange (2), step surface in one end of drift (1) and seal flange (2) offsets and realizes unidirectional location, make seal flange (2) realize butt-end packing simultaneously, the other end of drift (1) is auto state and contacts with air, on seal flange (2), be also processed with radial direction through hole, this radial direction through hole vacuumizes with one end that vacuum generating device (11) is connected to realize power valve (5) by connecting tube, the percussion end of power valve (5) is provided with fore-set flange (6), the center of fore-set flange (6) is provided with protruding fore-set (601), the periphery of fore-set (601) is provided with axially extending bore (602), on fore-set flange (6), be also processed with and be communicated with axially extending bore (602), be used for connecting the radial axle vacuum hole (603) of vacuum generating device (11), in the outside of fore-set flange (6), high-pressure cylinder (7) is installed, the inner chamber of high-pressure cylinder (7) is step-like structure, the inner of transmitting piston (8) is arranged in the little internal diameter chamber of high-pressure cylinder (7), the outer end of transmitting piston (8) is provided with an end face boss (801) that can only move in the large diameter chamber of high-pressure cylinder (7), the major diameter inner cavity surface of high-pressure cylinder (7), step surface, between the outside surface of transmitting piston (8) and end face boss (801), form a damping cavity (B), damping cavity (B) is connected with operation valve (A), on the inner face of transmitting piston (8), be provided with the end face through hole (802) passing through for the fore-set (601) on fore-set flange (6), the left end of sealing-plug (9) can be blocked transmitting piston (8), the other end of sealing-plug (9) is inserted in the pilot hole post (101) of pivot flange (10), pivot flange (10) is fixed on the outer face of high-pressure cylinder (7), is processed with the axially extending bore (102) that is communicated with transmitting piston (8) inner chamber and atmosphere on pivot flange (10), described high-pressure cylinder (7) is processed with the through hole that is communicated with the radial axle vacuum hole (603) on fore-set flange (6), and this through hole is connected with the vacuum-pumping tube of vacuum generating device (11).
2. vacuum hypervelocity launcher according to claim 1, is characterized in that the quantity of the axially extending bore (602) on described fore-set flange (6) is three, and they are distributed on fore-set (601) around.
3. vacuum hypervelocity launcher according to claim 1, is characterized in that described power valve is bearing in support (4) near one end of seal flange (2).
4. vacuum hypervelocity launcher according to claim 1, is characterized in that the length of described power valve (5) is not less than 10 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210273917.XA CN102818734B (en) | 2012-08-03 | 2012-08-03 | Vacuum high-speed emitter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210273917.XA CN102818734B (en) | 2012-08-03 | 2012-08-03 | Vacuum high-speed emitter |
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| CN102818734A CN102818734A (en) | 2012-12-12 |
| CN102818734B true CN102818734B (en) | 2014-09-03 |
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|---|---|---|---|---|
| CN103076223A (en) * | 2012-12-30 | 2013-05-01 | 南京理工大学 | Launcher based on Hopkinson pull rod test equipment |
| CN106840586B (en) * | 2016-12-30 | 2019-04-09 | 中国航天空气动力技术研究院 | A kind of piston emitter |
| CN107915181B (en) * | 2017-12-11 | 2024-05-03 | 中国航天空气动力技术研究院 | Traction mechanism |
| CN108592699B (en) * | 2018-04-13 | 2024-01-16 | 大连理工大学 | High-pressure light air gun launching device capable of adjusting water inlet angle |
| CN111912726B (en) * | 2020-06-29 | 2021-05-28 | 西安交通大学 | Particle flow emitting device |
| CN114427949B (en) * | 2022-01-18 | 2024-05-14 | 黑龙江省体育科学研究所 | Angle-adjustable low-speed air push rod device and use method thereof |
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