CN203464849U - Miniature two-stage light gas gun - Google Patents
Miniature two-stage light gas gun Download PDFInfo
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- CN203464849U CN203464849U CN201320396478.1U CN201320396478U CN203464849U CN 203464849 U CN203464849 U CN 203464849U CN 201320396478 U CN201320396478 U CN 201320396478U CN 203464849 U CN203464849 U CN 203464849U
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Abstract
A miniature two-stage light gas gun relates to a light gas gun which helps to solve problems that a conventional light gas gun driven by gunpowder at a first stage causes environment pollution, occupies large space, and cannot make a high-pressure membrane rupture process be sealed so that the emission speed of bullets cannot be increased. The miniature two-stage light gas gun comprises a cylinder, a pressure guide pipe, a stamping column, an emission pipe, a piston handle, a pressure guide body, a diaphragm, a membrane rupture device, a first sealing ring, a metal sealing ring, a bearer and multiple supporting seats. A piston on the piston handle is in sliding contact with the inner periphery of an air chamber. One end of the pressure guide pipe is in threaded connection with an air guide hole. The pressure guide pipe is in sealed connection with the stamping column, and the pressure guide body is disposed inside the pressure guide pipe. The first sealing ring and the metal sealing ring are arranged in an installation groove from inside to outside. The diaphragm is in sealed connection with the membrane rupture device which is in sealed connection with the emission pipe. The cylinder is arranged on the bearer. The pressure guide pipe and the emission pipe are detachably connected to the bearer. The miniature two-stage light gas gun is applied to research on spacecrafts, material performance and other fields.
Description
Technical field
The utility model relates to a kind of light-gas gun, is specifically related to the small-sized light-gas gun that a kind of two-stage adopts light gas.
Background technology
Light-gas gun can be launched the bullet of difformity, material, meet various high speeds, ultrahigh speed experiment demand, at present in kinetic energy weapon effect study, terrestrial space physical study, spacecraft shield research, under high strain rate, be used widely in the field such as material property research, is the most general high speed, ultrahigh speed driving arrangement.
The mini two-stage light gas gun that California Inst Tech USA and NASA (NASA) build jointly, one-level gunpowder drives, and secondary is used helium or hydrogen, transmitting tube diameter 1.8mm, 22.7mg steel ball can be transmitted into 2-3km/s, the nylon ball of 3.6mg is transmitted into 5-6km/s.Mini two-stage light gas gun of Tokyo polytechnical university, one-level gunpowder drives, and secondary is used hydrogen, and transmitting tube diameter 2.1mm, can be transmitted into 5.91km/s the aluminium alloy column of 13mg.The miniature two-stage light gas gun of U.S. Southwest Research Inst., one-level gunpowder drives, and secondary is used hydrogen, and transmitting tube diameter 1.78mm, can be transmitted into 7.5km/s the aluminium ball of 0.3-0.9mg.Several light-gas gun one-levels are all used gunpowder to drive above, although energy comparison is large, due to the safety issue of gunpowder itself, do not have gunpowder to use the unit of qualification to use, and are unfavorable for the popularization of light-gas gun technology.
The one-level helium of Padova, Italy university drives two-stage light gas gun, pump line internal diameter 35mm, and transmitting tube diameter 4.72mm, can accelerate to 5.5km/s by the body of 100mg, and at least can carry out 10 tests every day.This big gun has improved the shortcoming that one-level gunpowder drives, but because its design of Sealing Structure is not very good, does not make this big gun reach the due power of its 35mm pump line.
Utility model content
The purpose of this utility model is to adopt gunpowder to drive for solving existing light-gas gun one-level, there is contaminated environment, take up room large, and cannot seal and then cannot improve the problem of the emission rate of bullet to gases at high pressure rupture of membranes process, and then a kind of compact two-stage light-gas gun is provided.
The utility model is to address the above problem the technical scheme of taking to be: a kind of compact two-stage light-gas gun of the present utility model comprises cylinder barrel, connecting pipe, punching press post, transmitting tube, piston handle, pilot body, diaphragm, membrane-repturing device, the first sealing ring, metallic packing ring, bearing and a plurality of supporting seat; Described cylinder barrel is the cylinder barrel of closed at both ends, the middle part of one end of cylinder barrel is provided with gas port, and piston handle is installed in cylinder barrel, the inner peripheral surface sliding-contact of the piston on piston handle and air chamber, gas port is pointed in the end of piston handle and the two coaxially arranges, and piston is divided into balance cylinder and air chamber by cylinder barrel;
The wherein middle part of an end face of described punching press post is provided with the first cylindrical hole, the middle part of the other end of punching press post is provided with the second cylindrical hole, the aperture of the second cylindrical hole is less than the aperture of the first cylindrical hole, between the first cylindrical hole and the second cylindrical hole, be processed with bellmouth coaxial with the two and that be communicated with, the larger diameter end of bellmouth is communicated with the first cylindrical hole, and the smaller diameter end of bellmouth is communicated with the second cylindrical hole;
One end of connecting pipe is threaded with gas port, and the other end of connecting pipe is arranged on the described wherein middle part of an end face of punching press post, and connecting pipe is connected with punching press column sealing, and connecting pipe and the first cylindrical hole coaxially arrange; Pilot body is installed in connecting pipe, described pilot body comprises metal cylinder and nylon cylinder, one end of metal cylinder is inserted in nylon cylinder, the inwall slipper seal of the outer wall of metal cylinder and connecting pipe, the inwall slipper seal of the outer wall of nylon cylinder and connecting pipe;
Described membrane-repturing device is cylindrical membrane-repturing device, the middle part of membrane-repturing device is processed with the taper gas port coaxial with the second cylindrical hole, one end of transmitting tube is arranged on the middle part of the described other end of punching press post, between punching press post and transmitting tube, be provided with the circular film of the adjacent setting of punching press post and with the membrane-repturing device of the adjacent setting of transmitting tube, transmitting tube is communicated with the smaller diameter end of taper gas port and the two is coaxial, and the internal diameter of transmitting tube is identical with the internal diameter of the smaller diameter end of taper gas port;
On the other end of punching press post, be provided with a circle mounting groove, the first sealing ring and the first metallic packing ring are installed in mounting groove from inside to outside, and the first sealing ring and the metallic packing ring setting that reclines, punching press post and diaphragm are tightly connected by the first sealing ring and the metallic packing ring being arranged on punching press post, diaphragm and membrane-repturing device are tightly connected, and membrane-repturing device and transmitting tube are tightly connected;
Described cylinder barrel 1 is arranged on bearing, and described connecting pipe and transmitting tube are detachably connected on supporting seat respectively.
The beneficial effects of the utility model are: one, compact two-stage light-gas gun total length of the present utility model shorter (total length deficiency 3m), take up room little, simple to operate, experimental period short (can easily complete more than ten experiments in one day), smaller to site condition requirement, be conducive to applying of light-gas gun technology, two, the utility model adopts high pressure nitrogen or helium as drive source, than gunpowder, security and the feature of environmental protection of experiment have obviously been improved, without gunpowder, use qualification can use light-gas gun of the present utility model, for association area carry out at a high speed and hypervelocity impact experimental study provides great convenience, before transmitting tube entrance, placed the membrane-repturing device that can change at any time, except helping rupture of membranes, outside the diaphragm damage transmitting tube of avoiding splitting, can also effectively reduce the ablation of the light gas of high pressure to transmitting tube porch, greatly reduce experimentation cost, improved conventional efficient, improved conventional efficient, three, the diaphragm that the utility model is used does not directly contact transmitting tube, and benefit one is to increase the effective active area of gases at high pressure to diaphragm, makes diaphragm better by predetermined way rapid crack propagation, the 2nd, protection transmitting tube entrance is not impacted by diaphragm, reduces the ablation of high temperature and high pressure gas, thereby improves transmitting tube service life, reduce experimental cost, and auxiliary membrane-repturing device cost is lower, can be used as expendable part often to change, four, the sealing of the utility model punching press post and diaphragm adopts the dual-seal mode of the first sealing ring and metallic packing ring, effective sealing when the first sealing ring is guaranteed vacuumize and be filled with hydrogen, metallic packing ring works when piston compression hydrogen reaches compared with hyperbar, guarantee that in emission process, hydrogen is not revealed, experimental results show that, this kind of sealing means can be realized the sealing of hydrogen in whole experimentation well, greatly improved capacity usage ratio, capacity usage ratio has improved 10%-30%, for realizing high emission rate, provides effective assurance, five, the supporting base of the utility model connecting pipe and transmitting tube is used for pump line and transmitting tube to be fixed on base, simple in structure, fixed, is convenient to dismantle pump line and transmitting tube operation, can obviously improve conventional efficient, six, the utility model a kind of high efficiency, low pollution are provided, take up room little, easy to operate, stablize the highest 6.5km/s and can be low-cost in the above speed of 6.5km/s of surpassing of emission rate, stable transmitting, the compact two-stage light-gas gun that repeatability is good.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model, Fig. 2 is cylinder barrel and the connecting pipe syndeton schematic diagram in Fig. 1, Fig. 3 is punching press post, diaphragm, the structural representation that membrane-repturing device is connected with transmitting tube, Fig. 4 is connecting pipe, punching press post, diaphragm, membrane-repturing device, the overall structure schematic diagram that transmitting tube is connected with clamping protective sleeve, Fig. 5 is the structural representation of pilot body, Fig. 6 is the overall structure schematic diagram of supporting seat, Fig. 7 is the first sealing ring of the present utility model and the work schematic diagram of metallic packing ring under nature, Fig. 8 is the first sealing ring of the present utility model and the work schematic diagram of metallic packing ring under vacuum state, Fig. 9 is the first sealing ring of the present utility model and the work schematic diagram of metallic packing ring under low-pressure state, Figure 10 is the first sealing ring of the present utility model and the work schematic diagram of metallic packing ring under high pressure conditions, Figure 11 is the experimental waveform figure (this oscillogram is used for calculating velocity of shot) that utilizes device of the present utility model to enter pellet injection to obtain by speed measuring device.
The specific embodiment
The specific embodiment one: in conjunction with Fig. 1-Fig. 6, present embodiment is described, a kind of compact two-stage light-gas gun of present embodiment comprises cylinder barrel 1, connecting pipe 2, punching press post 3, transmitting tube 4, piston handle 5, pilot body 6, diaphragm 9, membrane-repturing device 10, the first sealing ring 12, metallic packing ring 13, bearing 14 and a plurality of supporting seat 7; The cylinder barrel that described cylinder barrel 1 is closed at both ends, the middle part of one end of cylinder barrel 1 is provided with gas port 101, piston handle 5 is installed in cylinder barrel 1, piston 501 on piston handle 5 and the inner peripheral surface sliding-contact of air chamber 1, gas port 101 is pointed in the end of piston handle 5 and the two coaxially arranges, and piston 501 is divided into balance cylinder 109 and air chamber 110 by cylinder barrel 1;
The wherein middle part of an end face of described punching press post 3 is provided with the first cylindrical hole 301, the middle part of the other end of punching press post 3 is provided with the second cylindrical hole 302, the aperture of the second cylindrical hole 302 is less than the aperture of the first cylindrical hole 301, between the first cylindrical hole 301 and the second cylindrical hole 302, be processed with bellmouth 303 coaxial with the two and that be communicated with, the larger diameter end of bellmouth 303 is communicated with the first cylindrical hole 301, and the smaller diameter end of bellmouth 3-3 is communicated with the second cylindrical hole 302;
One end of connecting pipe 2 is threaded with gas port 101, and the other end of connecting pipe 2 is arranged on the described wherein middle part of an end face of punching press post 3, and connecting pipe 2 is tightly connected with punching press post 3, and connecting pipe 2 and the first cylindrical hole 301 coaxially arrange; Pilot body 6 is installed in connecting pipe 2, described pilot body 6 comprises metal cylinder 601 and nylon cylinder 602, one end of metal cylinder 601 is inserted in nylon cylinder 602, the inwall slipper seal of the outer wall of metal cylinder 601 and connecting pipe 2, the inwall slipper seal of the outer wall of nylon cylinder 602 and connecting pipe 2;
Described membrane-repturing device 10 is cylindrical membrane-repturing device, the middle part of membrane-repturing device 10 is processed with the taper gas port 10-1 coaxial with the second cylindrical hole 302, one end of transmitting tube 4 is arranged on the middle part of the described other end of punching press post 3, between punching press post 3 and transmitting tube 4, be provided with the circular film 9 of punching press post 3 adjacent settings and with the membrane-repturing device 10 of transmitting tube 4 adjacent settings, transmitting tube 4 is communicated with the smaller diameter end of taper gas port 10-1 and the two is coaxial, and the internal diameter of transmitting tube 4 is identical with the internal diameter of the smaller diameter end of taper gas port 10-1;
On the other end of punching press post 3, be provided with a circle mounting groove, the first sealing ring 12 and the first metallic packing ring 13 are installed in mounting groove from inside to outside, and the first sealing ring 12 and metallic packing ring 13 setting that reclines, punching press post 3 is tightly connected by the first sealing ring 12 and the metallic packing ring 13 being arranged on punching press post 3 with diaphragm 9, diaphragm 9 is tightly connected with membrane-repturing device 10, and membrane-repturing device 10 is tightly connected with transmitting tube 4;
Described cylinder barrel 1 is arranged on bearing 14, and described connecting pipe 2 and transmitting tube 4 are detachably connected on respectively on supporting seat 7.
Described in present embodiment, transmitting tube 4 is for placing bullet 11, and the light gas of present embodiment can adopt hydrogen, nitrogen or helium.
Present embodiment solves the superhigh pressure sealing problem of punching press post and diaphragm contact position.Before transmitting, connecting pipe vacuumizes, and filling light gas (hydrogen, nitrogen or helium) all needs good sealing, on punching press post and diaphragm contact position install rubber seal additional and metallic packing ring can be realized sealing effectiveness; At present, in emission process, when wanting transmitting compared with low velocity, before rupture of membranes light atmospheric pressure hour, rubber seal also can play good sealing effectiveness.But when wanting to launch high speed, can reach the hyperpressure of hundreds of MPa before rupture of membranes in high-voltage cone section, at this moment rubber ring can be damaged under the effect of super-pressure hydrogen, reveals hydrogen, wastes a lot of energy, and cannot reach the fair speed of wanting transmitting.If install quoit additional, can sustain the Hydrogen Vapor Pressure of superelevation, but quoit is difficult to keep with contact position seamless contact of height, when vacuumizing or be filled with hydrogen, just likely leak like this, cannot realize the object of sealing.The utility model combines the advantage of sealing ring and becket, has designed a kind of brand-new sealing means, adopts the mode of inside and outside double containment to be placed in same groove and jointly uses, and inner ring adopts sealing ring, outer ring employing becket.
The specific embodiment two: in conjunction with Fig. 1-Fig. 6, present embodiment is described, the outer wall of the metal cylinder 601 of present embodiment and the inwall of connecting pipe 2 are by being sleeved on the rubber seal rings for seal on metal cylinder 601; Diaphragm 9 is by being arranged on rubber seal and its 10 sealing of rupture of membranes on membrane-repturing device 10, membrane-repturing device 10 is tightly connected by rubber seal and the transmitting tube 4 being arranged on membrane-repturing device 10, and connecting pipe 2 is tightly connected by rubber seal and the punching press post 3 being arranged on punching press post 3.So arrange, guaranteed good seal in the process of compression hydrogen, the needs of the transmitted at high speed of bullet under high pressure or super-pressure have effectively been guaranteed, present embodiment has solved effective transfer problem of drive of high-pressure gas energy, missile velocity is by high pressure nitrogen or helium, a plurality of factor controllings such as piston, punching press post and diaphragm.Due to the restriction of the air chamber allowable pressure of high pressure, can not the unlimited air chamber pressure that increases high pressure, the tapering of punching press post is inconvenient arbitrarily to be changed, so three factors being left by change, piston, hydrogen, diaphragm are optimized missile velocity.Want the missile velocity that reaches higher, Rupture of Membrane pressure should be enough high, the diaphragm secondary piston that splits must be fully enter cone, this just requires the piston can not be too light, but must have enough speed, so, after nylon piston, increase the weight of copper counterweight regulating piston, weight too hour cannot fully enter cone, and weight can not reach very high speed again too greatly, and diaphragm is broken in advance.Being filled with Hydrogen Vapor Pressure also must be controlled in a rational scope, air pressure too hour, amounts of hydrogen is few, even if reach, very high pressure energy is also limited, the time acting on bullet is too short, cannot make bullet reach very high speed, and air pressure is difficult to make piston fully to enter cone when too large, cannot reach enough Rupture of Membrane pressure, cannot make equally bullet obtain very high speed.Diaphragm is a very crucial governing factor, diaphragm requires good toughness, central burst is even, during rupture of membranes, split rather than cut, too weak diaphragm can cause too early rupture of membranes, cannot reach enough pressure, and too strong diaphragm may split or split insufficient, air release speed is fast not, affects bullet and accelerates.Other is identical with the specific embodiment one.
The specific embodiment three: in conjunction with Fig. 4, present embodiment is described, the first sealing ring 12 of present embodiment and the cross section of metallic packing ring 13 are circle.So arrange, effectively guaranteed pilot body compression hydrogen until in rupture of membranes process hydrogen do not leak.Other is identical with the specific embodiment one or two.
The specific embodiment four: in conjunction with Fig. 3 and Fig. 4, present embodiment is described, the diaphragm 9 of present embodiment is stainless steel or aluminium alloy diaphragm, and its thickness is 1.5mm.During the actual use of present embodiment, the external diameter of diaphragm is less than the internal diameter of punching press column outlet place seam, and there is cross cut channel center; Described membrane-repturing device is placed between diaphragm and transmitting tube; with high-strength steel, make; external diameter is identical with diaphragm external diameter; endoporus is taper gas port; larger diameter end one side of taper gas port is near diaphragm; object is that diaphragm is split from center smoothly, and high pressure hydrogen enters transmitting tube smoothly, also plays the effect of protection transmitting tube porch HTHP hydrogen ablation simultaneously.Other is identical with the specific embodiment one or two.
The specific embodiment five: in conjunction with Fig. 4, present embodiment is described, the first metallic packing ring 13 is stainless steel sealing ring described in present embodiment, and described the first sealing ring 12 is rubber seal.So arrange, stainless steel intensity is large, seals reliable and securely, and rubber seal rings for seal is effective, can meet the needs of the transmitted at high speed of bullet under high pressure or super-pressure.Other is identical with the specific embodiment three.
The specific embodiment six: present embodiment is described in conjunction with Fig. 1 and Fig. 3, the internal diameter of the connecting pipe 2 of present embodiment is 3～5 times of internal diameter of transmitting tube 4, the length of connecting pipe 2 is 80～120 times of internal diameter of connecting pipe 2, and the length of transmitting tube 4 is 150～250 times of internal diameter of transmitting tube 4.So arrange, under the combination of the size of present embodiment, the emission rate of bullet can surpass more than 6.5km/s, and during use, connecting pipe and the length of transmitting tube are, the unit of internal diameter is identical.Other is identical with the specific embodiment one, two or five.
The specific embodiment seven: in conjunction with Fig. 4, present embodiment is described, the bus of the bellmouth 303 of the punching press post 3 of present embodiment and the angle between center line are 11 °.So arrange, under the combination of the size of present embodiment, the emission rate of bullet can surpass more than 6.5km/s.Other is identical with the specific embodiment six.
The specific embodiment eight: present embodiment is described in conjunction with Fig. 3; described in present embodiment, light-gas gun also comprises clamping protective sleeve 8; the protective sleeve that clamping protective sleeve 8 is open at both ends; on the outer wall of the other end of connecting pipe 2, be provided with a circle projection 201; on the outer wall of one end of transmitting tube 4, be provided with a circle fin 401; the one end that clamps protective sleeve 8 is threaded with fin 401; the other end that clamps protective sleeve 8 is installed in projection 201, and connecting pipe 2, punching press post 3, diaphragm 11, membrane-repturing device 10 and transmitting tube 4 five link together by clamping protective sleeve 8.So arrange, connect the faster convenience of dismounting, also played the protective action of the compression leg that liquidates simultaneously.Other is identical with the specific embodiment one, two, five or seven.
The specific embodiment nine: present embodiment is described in conjunction with Fig. 1 and Fig. 6, described in present embodiment, each supporting seat 7 comprises pedestal 701, depression bar 702, cutting ferrule 703 and bolt 704, the middle part of the upper end of pedestal 701 is processed with V-shaped groove, V-shaped groove is used for placing connecting pipe 2 or transmitting tube 4, depression bar 702 is arranged on the upper end of pedestal 701, one end of depression bar 702 and pedestal 701 are rotationally connected, cutting ferrule 703 is rotationally connected with pedestal 701, on cutting ferrule 703, be processed with jack, the other end of depression bar 702 passes jack and is pressed on connecting pipe 2 or transmitting tube 4 by the bolt 704 being threaded with cutting ferrule 703.So arrange, be used for connecting pipe and transmitting tube to be fixed on base, simple in structure, fixed, be convenient to dismantle connecting pipe and transmitting tube operation, can obviously improve conventional efficient, test efficiency has improved 15%～20%.Other is identical with specific embodiment party nine.
The specific embodiment ten: present embodiment is described in conjunction with Fig. 1 and Fig. 2, described in present embodiment, light-gas gun also comprises the first switch valve 103, magnetic valve 102, Pressure gauge 108, check valve 105 and second switch valve 202, the lower end of balance cylinder 109 and air chamber 110 is respectively arranged with gas inlet pipe 104, the upper end of air chamber 110 is provided with Pressure gauge 108, converging of two gas inlet pipe 104 is provided with check valve 105 on pipeline, the upper end of balance cylinder 109 is provided with magnetic valve 102, gas port 101 places are provided with gas discharge tube 107, the first switch valve 103 is installed on gas discharge tube 107, on connecting pipe 2, be provided with and take out gas tube 203, take out second switch valve 202 is installed on gas tube 203.So arrange, installed check valve additional, make air chamber safe and reliable, and after single test completes, can be by first giving the inflation of balance cylinder, mobile piston rear end until the method for mobile piston reach sealed air chamber and connecting pipe, remaining gas in the air chamber of recovery high pressure is so that test next time continues to use, because connecting pipe is very little with air chamber phase specific volume, it not is too many that experiment rear gas chamber internal pressure declines, so, do like this and can greatly save gases at high pressure, improve capacity usage ratio, save cost, capacity usage ratio has improved more than 25%.Other is identical with specific embodiment party one, two, five, seven or nine.
Embodiment
Assembly or length that the aluminium alloy column that the bullet employing diameter of the present embodiment is 5mm, the PC post that diameter is 5mm and diameter are 1.5mm aluminium ball are that 15mm diameter is the steel column of 5mm, and experimental data is as shown in table 1.
Table 1 is compact two-stage light-gas gun emission experiment data of the present utility model
Wherein, the emission rate of the bullet of experiment numbers 6 has reached 6.61km/s, and Figure 11 is the time interval signal that is contained in the experiment numbers 6 that the magnetic survey speed variator in transmitting tube exit measures, and wherein three magnetic coils are uniformly distributed, and spacing is 30mm.
The course of work
In conjunction with Fig. 1～Figure 11, illustrate, once complete emission test: pack connecting pipe, piston, diaphragm, membrane-repturing device and bullet etc. into and be connected.First use gas boosting pump that nitrogen or helium are filled with to air chamber 110 by gas tube 104, due to, there is the existence of check valve 105, gas is introduced into balance cylinder 109, promote mobile piston 501 and move forward to gas port 101Chu sealed air chamber 110, and with being connected of connecting pipe 2, when gas pressure reaches the controlled pressure of check valve 105, check valve 105 conductings, gas starts to enter air chamber 110, and the Pressure gauge on air chamber 110 (high pressure gauge) 108 shows air chamber 110 internal pressures in real time, while reaching specified pressure, close air pump, stop inflation, by hydrogen cylinder, to the hydrogen that is filled with specified pressure in the connecting pipe 2 after vacuumizing, close charging valve, after ready, start magnetic valve 102, pressure moment reduction in balance cylinder 109, mobile piston 501 disequilibriums, retreat rapidly, air chamber 110 is communicated with connecting pipe 2, air chamber 110 inner high voltage gases expand rapidly, pilot body 6 in promotion connecting pipe 2 is along the axial accelerated motion of connecting pipe 2, the hydrogen of compression pilot body 6 front ends constantly raises its pressure, when pilot body 6 arrives punching press post 3, nylon cylinder 602 enters cone, compression hydrogen volume diminishes rapidly, pressure raises rapidly, while reaching Rupture of Membrane pressure, diaphragm 9 breaks, high pressure hydrogen expansion promotes bullet 11 and accelerates to target velocity.After emission process completes, next there are two kinds of selections: (1), if next not preparing then to do next has tested, opens the first switch valve 103 of gas discharge tube 107, discharge the gases at high pressure in air chamber 110 and in connecting pipe 2; (2) if next continue to do next test, can first give air chamber 110 inflations until Pressure gauge 108 shows that force value starts to rise, now mobile piston 501 has blocked the second switch valve 202 of the air inlet of connecting pipe 2, stop inflation, open the valve of gas discharge tube 107, bleed off the gases at high pressure in connecting pipe 2.After connecting pipe 2 inner high voltage air releases; can dismantle the clamping protective sleeve 8 of punching press post 3; the connection of air chamber 1 and connecting pipe 2; that unclamps supporting seat 7 screws bolt 704, opens depression bar 702, unloads punching press post 3; take off diaphragm 9 and membrane-repturing device 10; take out the pilot body 6 after cone, clean punching press post 3 and connecting pipe 2, prepare to carry out next test.
, when nature, all there is not deformation in the first sealing ring of the present utility model and metallic packing ring; The first sealing ring of the present utility model and metallic packing ring, as shown in Figure 7; When vacuum state, the first sealing ring is squeezed, and to the center line generation deformation of punching press post, has played certain punching press post and the sealing of diaphragm, as shown in Figure 8; When low-pressure state, the first sealing ring is squeezed, and deviates from the center line generation deformation of punching press post, has also played certain punching press post and the sealing of diaphragm, as shown in Figure 9; But when high pressure conditions, deformation occurs for the first sealing ring and metallic packing ring simultaneously, all to the center line generation deformation that deviates from punching press post, the two jointly liquidate compression leg and diaphragm have played good sealing, effectively improve the emission rate of bullet, as shown in figure 10.
Claims (10)
1. a compact two-stage light-gas gun, is characterized in that: described light-gas gun comprises cylinder barrel (1), connecting pipe (2), punching press post (3), transmitting tube (4), piston handle (5), pilot body (6), diaphragm (9), membrane-repturing device (10), the first sealing ring (12), metallic packing ring (13), bearing (14) and a plurality of supporting seat (7); The cylinder barrel that described cylinder barrel (1) is closed at both ends, the middle part of one end of cylinder barrel (1) is provided with gas port (101), piston handle (5) is installed in cylinder barrel (1), piston (501) on piston handle (5) and the inner peripheral surface sliding-contact of air chamber (1), gas port (101) is pointed in the end of piston handle (5) and the two coaxially arranges, and piston (501) is divided into balance cylinder (109) and air chamber (110) by cylinder barrel (1);
The wherein middle part of an end face of described punching press post (3) is provided with the first cylindrical hole (301), the middle part of the other end of punching press post (3) is provided with the second cylindrical hole (302), the aperture of the second cylindrical hole (302) is less than the aperture of the first cylindrical hole (301), between the first cylindrical hole (301) and the second cylindrical hole (302), be processed with bellmouth coaxial with the two and that be communicated with (303), the larger diameter end of bellmouth (303) is communicated with the first cylindrical hole (301), the smaller diameter end of bellmouth (303) is communicated with the second cylindrical hole (302),
One end of connecting pipe (2) is threaded with gas port (101), the other end of connecting pipe (2) is arranged on the described wherein middle part of an end face of punching press post (3), connecting pipe (2) is tightly connected with punching press post (3), and connecting pipe (2) coaxially arranges with the first cylindrical hole (301); Pilot body (6) is installed in connecting pipe (2), described pilot body (6) comprises metal cylinder (601) and nylon cylinder (602), one end of metal cylinder (601) is inserted in nylon cylinder (602), the inwall slipper seal of the outer wall of metal cylinder (601) and connecting pipe (2), the inwall slipper seal of the outer wall of nylon cylinder (602) and connecting pipe (2);
Described membrane-repturing device (10) is cylindrical membrane-repturing device, the middle part of membrane-repturing device (10) is processed with the taper gas port (10-1) coaxial with the second cylindrical hole (302), one end of transmitting tube (4) is arranged on the middle part of the described other end of punching press post (3), between punching press post (3) and transmitting tube (4), be provided with the circular film (9) of the adjacent setting of punching press post (3) and with the membrane-repturing device (10) of the adjacent setting of transmitting tube (4), transmitting tube (4) is communicated with the smaller diameter end of taper gas port (10-1) and the two is coaxial, the internal diameter of transmitting tube (4) is identical with the internal diameter of the smaller diameter end of taper gas port (10-1),
On the other end of punching press post (3), be provided with a circle mounting groove, the first sealing ring (12) and the first metallic packing ring (13) are installed in mounting groove from inside to outside, and the first sealing ring (12) and metallic packing ring (13) setting that reclines, punching press post (3) is tightly connected by the first sealing ring (12) and the metallic packing ring (13) being arranged on punching press post (3) with diaphragm (9), diaphragm (9) is tightly connected with membrane-repturing device (10), and membrane-repturing device (10) is tightly connected with transmitting tube (4);
It is upper that described cylinder barrel (1) is arranged on bearing (14), and described connecting pipe (2) and transmitting tube (4) are detachably connected on respectively on supporting seat (7).
2. a kind of compact two-stage light-gas gun according to claim 1, is characterized in that: the inwall of the outer wall of metal cylinder (601) and connecting pipe (2) is by being sleeved on the rubber seal rings for seal on metal cylinder (601); Diaphragm (9) is by being arranged on rubber seal and membrane-repturing device (10) sealing on membrane-repturing device (10), membrane-repturing device (10) is tightly connected by rubber seal and the transmitting tube (4) being arranged on membrane-repturing device (10), and connecting pipe (2) is tightly connected by rubber seal and the punching press post (3) being arranged on punching press post (3).
3. a kind of compact two-stage light-gas gun according to claim 1 and 2, is characterized in that: the cross section of the first sealing ring (12) and metallic packing ring (13) is circle.
4. a kind of compact two-stage light-gas gun according to claim 1 and 2, is characterized in that: diaphragm (9) is stainless steel or aluminium alloy diaphragm, and its thickness is 1.5mm.
5. a kind of compact two-stage light-gas gun according to claim 3, is characterized in that: described metallic packing ring (13) is stainless steel sealing ring, and described the first sealing ring (12) is rubber seal.
6. according to a kind of compact two-stage light-gas gun described in claim 1,2 or 5, it is characterized in that: the internal diameter of connecting pipe (2) is 3～5 times of internal diameter of transmitting tube (4), the length of connecting pipe (2) is 80～120 times of internal diameter of connecting pipe (2), and the length of transmitting tube (4) is 150～250 times of internal diameter of transmitting tube (4).
7. a kind of compact two-stage light-gas gun according to claim 6, is characterized in that: bus and the angle between center line of the bellmouth (303) of punching press post (3) are 11 °.
8. according to claim 1, 2, a kind of compact two-stage light-gas gun described in 5 or 7, it is characterized in that: described light-gas gun also comprises clamping protective sleeve (8), clamp the protective sleeve that protective sleeve (8) is open at both ends, on the outer wall of the other end of connecting pipe (2), be provided with a circle projection (201), on the outer wall of one end of transmitting tube (4), be provided with a circle fin (401), the one end that clamps protective sleeve (8) is threaded with fin (401), the other end that clamps protective sleeve (8) is installed in projection (201), connecting pipe (2), punching press post (3), diaphragm (9), membrane-repturing device (10) and transmitting tube (4) five link together by clamping protective sleeve (8).
9. a kind of compact two-stage light-gas gun according to claim 8, it is characterized in that: described each supporting seat (7) comprises pedestal (701), depression bar (702), cutting ferrule (703) and bolt (704), the middle part of the upper end of pedestal (701) is processed with V-shaped groove, V-shaped groove is used for placing connecting pipe (2) or transmitting tube (4), depression bar (702) is arranged on the upper end of pedestal (701), one end of depression bar (702) and pedestal (701) are rotationally connected, cutting ferrule (703) is rotationally connected with pedestal (701), cutting ferrule is processed with jack on (703), the other end of depression bar (702) passes jack and is pressed on connecting pipe (2) or transmitting tube (4) by the bolt (704) being threaded with cutting ferrule (703).
10. according to claim 1, 2, 5, a kind of compact two-stage light-gas gun described in 7 or 9, it is characterized in that: described light-gas gun also comprises the first switch valve (103), magnetic valve (102), Pressure gauge (108), check valve (105) and second switch valve (202), the lower end of balance cylinder (109) and air chamber (110) is respectively arranged with gas inlet pipe (104), the upper end of air chamber (110) is provided with Pressure gauge (108), be positioned in the gas inlet pipe (104) of air chamber (110) lower end check valve (105) is installed, the upper end of balance cylinder (109) is provided with magnetic valve (102), gas port (101) locates to be provided with gas discharge tube (107), the first switch valve (103) is installed on gas discharge tube (107), on connecting pipe (2), be provided with and take out gas tube (203), take out second switch valve (202) is installed on gas tube (203).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320396478.1U CN203464849U (en) | 2013-07-04 | 2013-07-04 | Miniature two-stage light gas gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320396478.1U CN203464849U (en) | 2013-07-04 | 2013-07-04 | Miniature two-stage light gas gun |
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| Publication Number | Publication Date |
|---|---|
| CN203464849U true CN203464849U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320396478.1U Withdrawn - After Issue CN203464849U (en) | 2013-07-04 | 2013-07-04 | Miniature two-stage light gas gun |
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| Country | Link |
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| CN (1) | CN203464849U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322857A (en) * | 2013-07-04 | 2013-09-25 | 哈尔滨工业大学 | Small two-stage light-gas gun |
| CN106353206A (en) * | 2016-10-26 | 2017-01-25 | 中国工程物理研究院总体工程研究所 | Rapid closing device for air cannon |
| CN106403706A (en) * | 2016-10-25 | 2017-02-15 | 中国工程物理研究院总体工程研究所 | Instantaneous high-pressure gas cannon |
| US10073020B2 (en) | 2015-02-06 | 2018-09-11 | Drexel University | Modular light gas accelerator |
| CN109870069A (en) * | 2017-12-04 | 2019-06-11 | 中国飞机强度研究所 | A kind of single tube air bubble that can continuously emit |
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2013
- 2013-07-04 CN CN201320396478.1U patent/CN203464849U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322857A (en) * | 2013-07-04 | 2013-09-25 | 哈尔滨工业大学 | Small two-stage light-gas gun |
| CN103322857B (en) * | 2013-07-04 | 2014-12-17 | 哈尔滨工业大学 | Small two-stage light-gas gun |
| US10073020B2 (en) | 2015-02-06 | 2018-09-11 | Drexel University | Modular light gas accelerator |
| CN106403706A (en) * | 2016-10-25 | 2017-02-15 | 中国工程物理研究院总体工程研究所 | Instantaneous high-pressure gas cannon |
| CN106403706B (en) * | 2016-10-25 | 2017-10-31 | 中国工程物理研究院总体工程研究所 | A kind of wink sends out gases at high pressure big gun |
| CN106353206A (en) * | 2016-10-26 | 2017-01-25 | 中国工程物理研究院总体工程研究所 | Rapid closing device for air cannon |
| CN106353206B (en) * | 2016-10-26 | 2023-08-18 | 中国工程物理研究院总体工程研究所 | Quick closing device for air cannon |
| CN109870069A (en) * | 2017-12-04 | 2019-06-11 | 中国飞机强度研究所 | A kind of single tube air bubble that can continuously emit |
| CN109870069B (en) * | 2017-12-04 | 2021-07-16 | 中国飞机强度研究所 | Single-tube air cannon capable of continuously launching |
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