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1. 发明授权

US4798261A Small powerful hydro gun 失效
标题翻译：小强力水枪
公开(公告)号：US4798261A
公开(公告)日：1989-01-17
申请号：US881911
申请日：1986-07-03
申请人： Paul Chelminski
发明人： Paul Chelminski
IPC分类号： G01V1/137 , G01V1/38
CPC分类号： G01V1/137
摘要： An uncomplicated, easy to operate, relatively inexpensive, compact and powerful acoustical source hydro gun for use in a liquid environment is particularly effective in a multiple array for marine life management. The powerful output, compactness and non-complex features of this hydro gun enable its advantageous use as a seismic energy source for high resolution marine seismic exploration and for seismic exploration when lowered down into a well in the earth containing liquid. A cylinder containing a free-moving piston has water discharge ports near one end for admitting water when the hydro gun is immersed in water and for discharging water when the hydro gun is activated by a solenoid valve. The solenoid valve is mounted on a cylinder head block containing a small annular high pressure firing chamber charged with pressurized gas and closed by the solenoid valve. To fire this hydro gun, the solenoid valve is electrically energized, thereby opening a short flow path from the firing chamber into the head end of the cylinder. The sudden discharge of high pressure gas into the cylinder head end propels the water piston along the cylinder for suddenly discharging water through the discharge ports. The water piston blocks these ports thereby creating a cavity in the ambient liquid which collapses to produce a wideband frequency sharply-peaked pressure impulse rich in frequencies above 300 Hz. Hydrostatic pressure automatically returns the piston to its initial position at the cylinder head end.
摘要翻译：在液体环境中使用的简单，易于操作，相对便宜，紧凑且功能强大的声源水枪在海洋生物管理的多阵列中特别有效。这种水枪的强大的输出，紧凑性和非复杂特征使其能够作为用于高分辨率海洋地震勘探的地震能源和降低到含地球液体中的井中的地震勘探的有利用途。含有自由移动活塞的气缸在一端接近排水口，当水枪浸入水中时用于允许水，并且当电磁阀由电磁阀启动时，排出水。电磁阀安装在装有加压气体并被电磁阀关闭的小型环形高压发射室的气缸盖上。为了燃烧该喷枪，电磁阀被通电，从而打开从燃烧室到气缸的头端的短流路。突然排出高压气体进入气缸盖端部，沿着气缸推动水活塞突然从排出口排出水。水活塞堵塞这些端口，从而在周围液体中形成空腔，该空腔塌陷以产生富含高于300Hz的频率的宽带频率尖峰压力脉冲。静水压力自动将活塞返回到气缸盖端的初始位置。

2. 发明授权

US4754443A Airgun having shaft-bearing-guided shuttle and capable of fast repitition self-firing 失效
公开(公告)号：US4754443A
公开(公告)日：1988-06-28
申请号：US672107
申请日：1984-11-15
申请人： Stephen V. Chelminski
发明人： Stephen V. Chelminski
IPC分类号： G01V1/02 , G01V1/137 , A47L5/00 , G01V1/04 , H04R1/02
CPC分类号： G01V1/137 , Y10S181/40
摘要： An airgun impulsive energy source has an elongated shaft bearing surrounding the shaft of the reciprocatable shuttle for guiding the shuttle and preventing its operating or firing pistons from contacting their respective cylinder walls. The illustrative embodiment of this airgun is proportioned to be self-firing with a fast repitition rate. This airgun has an elongated cylindrical housing with discharge ports in a cylindrical wall positioned between the operating and firing chambers. The shuttle-guiding shaft bearing is positioned in the cylindrical housing between the ports and an operating chamber. This shaft-guiding bearing has a length which is more than 1.7 times the diameter of the shuttle shaft, while the operating and firing pistons have diameters which are slightly less than the diameter of their respective cylinder walls for eliminating contact of these pistons with their cylinder walls, thereby advantageously dramatically increasing the firing cycles which can occur before the need for replacing any worn parts. Moreover, only the shuttle shaft guiding bearing is replaced, instead of the cylinder walls. The housing includes internal through passages which convey high pressure gas longitudinally through the airgun so that it can be coupled to subsequent airguns connected in series with the first one. Thus, a single source of high pressure gas may be utilized and fed in series through a sequence of airguns forming a flexible "string" of airguns capable of being inserted into and used for cleaning pipes of heat exchangers, boilers, water heaters and other internal regions of closed vessels, which are normally very difficult or impossible to reach into for cleaning. The discharges of pressurized gas by the string of airguns in liquid, usually water, in such equipment is used to dislodge sediment and deposits from the internal surfaces of such confined regions so that the loosened foreign materials can then be flushed out by the flowing liquid.

3. 发明授权

US4597464A Method and system for well velocity shooting and vertical seismic profiling 失效
标题翻译：井速射击和垂直地震剖面的方法和系统
公开(公告)号：US4597464A
公开(公告)日：1986-07-01
申请号：US381698
申请日：1982-05-25
申请人： Paul Chelminski
发明人： Paul Chelminski
IPC分类号： G01V1/02 , G01V1/047 , G01V1/09
CPC分类号： G01V1/006 , G01V1/047 , Y10S181/401
摘要： A method and system are provided for well velocity shooting and vertical seismic profiling utilizing mobile seismic land sources for transmitting powerful seismic energy impulses into the earth. A plurality of nesting pairs of tanks are transported on a single vehicle to a well site where the tanks are unloaded and arranged in a suitable array, for example, in a linear array or uniformly spaced around the mouth of the well. The tanks each have a displaceable end portion serving as a diaphragm placed in contact with the ground near the well. Then the tanks are filled with a noncompressible liquid. The total effective mass of the liquid may be increased by adding density-increasing materials thereto. Air guns are suspended in the tanks submerged in the liquid therein. The air guns are fired in a predetermined manner, abruptly releasing pressurized gas into the liquid contained in the tanks for providing powerful seismic impulses which are transmitted into the ground by the displaceable diaphragms. Geophone equipment lowered into the well receives the resultant waves which have passed through the geological structures near the well, and the signals from the geophone equipment may be recorded and/or processed at ground level. Advantageously, a mobile system is provided in which a single vehicle can provide an array of four seismic sources instead of requiring two or four vehicles to provide a like number of sources.
摘要翻译：提供了一种方法和系统，用于快速射击和利用移动式地震源的垂直地震剖面，将强大的地震能量脉冲传递到地球。多个嵌套对的箱体在单个车辆上运输到井的位置，其中罐被卸载并且以适当的阵列布置，例如以直线阵列或围绕井口均匀间隔布置。这些罐各自具有用于与井附近的地面接触的隔膜的可移位端部。然后，坦克里装满了不可压缩的液体。可以通过向其中加入增加密度的材料来增加液体的总有效质量。气枪悬挂在淹没在液体中的油箱中。气枪以预定的方式燃烧，将加压气体突然释放到容纳在罐中的液体中，以提供强大的地震脉冲，这些地震脉冲通过可移动的隔膜传送到地面。降落到井中的地震检波器设备接收已经通过井附近的地质结构的合成波，并且来自地震检波器设备的信号可以在地面记录和/或处理。有利地，提供了一种移动系统，其中单个车辆可以提供四个地震源的阵列，而不需要两个或四个车辆来提供相同数量的源。

4. 发明授权

US5432757A Large-diameter, cylinder-shuttle seismic airgun method, apparatus and towing system 失效
标题翻译：大口径气缸穿梭地震气枪法，装置牵引系统
公开(公告)号：US5432757A
公开(公告)日：1995-07-11
申请号：US180547
申请日：1994-01-12
申请人： Stephen Chelminski
发明人： Stephen Chelminski
IPC分类号： G01V1/137 , G01V1/04 , H04R23/00
CPC分类号： G01V1/137
摘要： A large-diameter, cylinder-shuttle airgun for seismic uses has a cylinder shuttle configured as a hollow, elongated cylinder body of revolution with an inwardly-facing cylinder guide surface and having two outwardly-extending, axially-spaced annular flanges. These two annular flanges are an operating flange at an upper end of the body of revolution and a firing flange at an intermediate region thereof. A cylinder skirt extends down below the firing flange, and the cylinder shuttle has an overall axial length L. The firing flange has a perimeter of outside diameter OD, and the ratio of L to OD is at least about 1 to 1. A cylinder housing of the airgun has a main inner cylinder structure encircled by the cylinder shuttle. This main inner cylinder structure may have an axial passageway of sufficient diameter for passing at least one compressed air hose and at least one multi-conductor electric cable axially therethrough. The housing provides an annular operating chamber for receiving the operating flange therein and has an annular firing chamber with removable interchangeable annular chamber walls for changing volume of the annular firing chamber. The skirt on the cylinder shuttle extends down into the firing chamber. The housing defines an annular discharge port positioned intermediate the operating and firing chambers and extending 360.degree. around the axis of the housing. By employing a firing flange of large OD, a Torus bubble is produced of large "C" radius in relation to its axis of revolution which provides enhanced peak pressure output and improved PBR compared with a standard airgun.
摘要翻译：用于地震用途的大直径汽缸穿梭气枪具有构造为具有向内的气缸引导表面并具有两个向外延伸的轴向间隔开的环形凸缘的中空的细长圆筒体的气缸梭。这两个环形凸缘是在旋转体的上端处的操作凸缘和在其中间区域处的烧制凸缘。气缸裙部向下延伸到燃烧凸缘的下方，并且汽缸梭具有总的轴向长度L.发射凸缘具有外径OD的周长，并且L与OD的比率至少约为1:1。气缸壳体的气枪具有由气缸梭子包围的主内筒结构。该主内筒结构可以具有足够直径的轴向通道，用于使至少一个压缩空气软管和至少一根多导体电缆轴向通过。壳体提供用于在其中容纳操作凸缘的环形操作室，并且具有环形燃烧室，其具有用于改变环形燃烧室的体积的可移除的可互换的环形室壁。汽缸梭子上的裙子向下延伸到燃烧室。壳体限定了位于操作和发射室之间的环形排出口，围绕壳体的轴线延伸360度。通过使用大的外径的发射凸缘，相对于其旋转轴线产生大的“C”半径的环形气泡，与标准气枪相比，提供了增强的峰值压力输出和改进的PBR。

5. 发明授权

US4739859A Method and apparatus for reducing the stretch of an elastomeric diaphragm of a land seismic source 失效
标题翻译：降低陆地震源的弹性膜片的拉伸的方法和装置
公开(公告)号：US4739859A
公开(公告)日：1988-04-26
申请号：US850236
申请日：1986-04-10
申请人： Anthony J. Delano
发明人： Anthony J. Delano
IPC分类号： G01V1/047 , G01V1/00
CPC分类号： G01V1/047 , Y10S181/401
摘要： A land seismic energy source is provided having a rigid dome-shaped bell containing a substantially imcompressible liquid and an airgun for abruptly releasing pressurized gas into the liquid for generating powerful seismic impulses. The bell has a lower rim with a metal pan positioned below the rim for engaging the surface of the earth below the bell, and it is mounted for upward and downward movement relative to the bell. A resilient, flexible elastomeric diaphragm is mounted on the rim of the bell and extends across the bottom of the bell for retaining the liquid in the bell. The pan is provided with a rising, generally convex, upwardly extending surface on the bottom of the pan with the diaphragm initially resting on the upwardly extending surface on the bottom of the pan thereby assuming a generally concave configuration across the bottom of the bell, which results when the airgun is fired in reducing the amount of downward deflection of the diaphragm thereby reducing the amount of stretching of the diaphragm and increasing the life of the diaphragm. The rising, upwardly extending surface may be integrally formed on the pan or may comprise a steel hump which is welded to the pan using peripheral as well as plugged welds. The top surface of the hump is smooth all of the way to the bottom of the pan.
摘要翻译：陆地地震能量源具有刚性的圆顶形的钟罩，其中包含基本上不可压缩的液体和气枪，用于将加压气体突然释放到液体中，以产生强大的地震脉冲。钟具有下边缘，金属盘位于边缘下方，用于接合钟下方的地球表面，并且它被安装成相对于钟的向上和向下运动。弹性弹性膜片安装在钟罩的边缘上，并延伸穿过钟罩的底部，以将液体保持在钟罩中。锅在锅的底部设置有上升的，大致凸起的向上延伸的表面，其中隔膜最初搁置在锅的底部上的向上延伸的表面上，从而假定在钟的底部具有大致凹形的构造，结果是在减少隔膜向下偏转量的同时点燃气枪，从而减少隔膜的拉伸量并延长膜片的使用寿命。上升的向上延伸的表面可以一体地形成在盘上，或者可以包括使用外围和焊接焊接到锅的钢拱顶。驼峰的顶部表面平滑到锅底部。

6. 发明授权

US4472794A Sleeve shuttle air gun 失效
标题翻译：袖口穿梭枪
公开(公告)号：US4472794A
公开(公告)日：1984-09-18
申请号：US268747
申请日：1981-06-01
申请人： Steven V. Chelminski
发明人： Steven V. Chelminski
IPC分类号： G01V1/38 , G01V1/02 , G01V1/137 , G01V1/104
CPC分类号： G01V1/137
摘要： A sleeve shuttle air gun is described which can be fired by a solenoid valve without dumping compressed air into the ambient prior to firing, thereby avoiding the generation of premature impulses caused by such dumping and avoiding the heavy duty complex solenoid dump valves and two-stage dump valves of the prior art. The sleeve shuttle is automatically returned to its initial closed and sealed position after each firing of the airgun by the refilling flow of only one level of pressurized air without a separate low level pressure source to control the sleeve shuttle. A long acceleration path is provided so the sleeve shuttle attains velocity prior to opening the discharge ports for producing a sudden, powerful discharge. The end of the sleeve shuttle travels completely beyond the discharge ports, and is then damped by interaction with damper ports located beyond the discharge ports. The trigger chamber for initiating firing is defined by an inner annular lip at one end of the sleeve shuttle engaging the firing seal in the initial closed position and by an outer annular shoulder on the outside of the shuttle engaging an encircling seal. A replaceable stationary piston ring in sliding engagement with the inner wall of the sleeve shuttle and a replaceable stationary cylinder sleeve in sliding engagement with said annular shoulder accommodate wear. The volume of the firing chamber is changed by replacing a chamber on the opposite end of the air gun from the solenoid valve.
摘要翻译：描述了一种套筒穿梭气枪，其可以由电磁阀发射，而不会在燃烧之前将压缩空气倾倒到周围环境中，从而避免产生由这种倾倒引起的过早的冲击，并避免重型复杂的电磁阀卸载阀和两级现有技术的倾卸阀。在每次点燃气枪之后，套管穿梭机仅通过仅一级加压空气的再填充流而自动返回到初始的闭合和密封位置，而没有单独的低级压力源来控制套筒梭。提供长的加速路径，使得套管在打开排出口之前达到速度，以产生突然强大的排放。套筒梭的端部完全超过排出口，然后通过与位于排出口之外的阻尼器端口的相互作用来阻尼。用于启动点火的触发室由套筒梭的在初始关闭位置处接合击发密封件的一端处的内环形唇缘以及接合环绕密封件的梭子外侧上的外环形肩部限定。与套筒梭的内壁滑动接合的可更换的静止活塞环和与所述环形肩部滑动接合的可更换的静止气缸套容纳磨损。通过将气枪的另一端的腔室与电磁阀相替而改变燃烧室的体积。

7. 发明授权

US4779245A Long-life, low-maintenance air gun/hydro gun 失效
公开(公告)号：US4779245A
公开(公告)日：1988-10-18
申请号：US762966
申请日：1985-08-06
申请人： Stephen V. Chelminski
发明人： Stephen V. Chelminski
IPC分类号： G01V1/137 , G01V1/04 , H04R1/02
CPC分类号： G01V1/137
摘要： A long-life, low-maintenance air gun/hydro gun includes a one-piece, integral shuttle having an unusually long hollow shank with a firing piston whose configuration is the mirror image of the operating piston, except for the slightly smaller diameter "D" of the firing piston. The shank length L is at least 2.5 times D, and the whole shuttle is guided by this shank sliding within a shaft seal and bearing assembly. By virtue of this guidance, the perimeters of the operating and firing pistons are always kept slightly spaced from their respective associated cylinder walls for eliminating contact of these pistons with their cylinder walls for advantageously dramatically increasing the total number of operating firing cycles which can be accumulated in use before the need for replacing any worn parts, except for the operating and firing seals which are inexpensive. Thus, this air/hydro gun offers a low-maintenance feature. Further, it is only the shank-guiding bearing assembly which is replaced, instead of both of the cylinder walls; the perimeters of the two pistons do not become worn, and thus the operating characteristics (triggering/firing response) do not significantly change over long periods of repeated numerous cycles of operation, and triggering/firing " jitter" is avoided. In conjunction with the shank-guidance, a novel configured tapered wall surface of the operating chamber produces smoother acceleration and deceleration of the shuttle, so that operating stresses in the shuttle are reduced. This reduction in stresses plus the unitary one-piece construction of the shuttle provide a long operating lifetime for the shuttle. The housing of the air gun comprises two main components instead of the usual three. Therefore, only a single clamp ring holds the air gun together. Then, only one more clamp ring is employed to secure the outer housing of the hydro gun around the air gun. The change from air-to-hydro gun, and the change back to an air gun are both quickly and easily made on shipboard while at sea. The air gun and the hydro gun are less complex and lighter in weight than prior guns of comparable firing volumes, but they are powerful relative to their weight, thus being easier to handle at sea than earlier air guns or water guns. Advantageously, for controlling and modulating the acceleration and deceleration of fast-travelling shuttle the inner surface of the operating sleeve liner can be designed to have any desired configuration, because it is freed from the need to guide the rim of the operating piston by virtue of the fact that shuttle guidance is now provided along the shank. The effective bearing length guiding the shuttle shank is more than three times the O.D. of the shuttle shank. The resilient O-ring firing seal is maintained under continuous spring-loading for enhancing its sealing ability and for automatically supporting this firing seal continuously biased toward its sealed position, thereby contributing to consistent, reliable, repeatable firing characteristics throughout a long operating life and providing a larger throat opening for the firing chamber.

8. 发明授权

US4757482A Modular airgun array method, apparatus and system 失效
标题翻译：模块化气枪阵列法，装置及系统
公开(公告)号：US4757482A
公开(公告)日：1988-07-12
申请号：US868199
申请日：1986-05-23
申请人： Augustus H. Fiske, Jr.
发明人： Augustus H. Fiske, Jr.
IPC分类号： G01V1/02 , G01V1/137 , G01V1/04 , G01V1/38 , H04R1/02
CPC分类号： G01V1/006 , G01V1/137
摘要： A plurality of submerged control station junction boxes each include a microprocessor having data storage and transmission capability, airgun firing and related electronic circuits to control a predetermined airgun or airgun groups. These junction boxes are towed at spaced positions along an airgun array. An electrical cable and sections of high pressure air supply line are detachably coupled to each junction box. The predetermined airguns to be controlled by a junction box are detachably coupled thereto. Thus, the number of airguns in the towed array can be changed by coupling or uncoupling junction boxes and the associated airguns controlled by them. The junction boxes are automatically cooled on shipboard by increasing low pressure air until a relief valve opens for establishing a continuous cooling flow of low pressure through a protective hose sheath and the junction boxes. Local electronic microprocessor units in the respective junction boxes serve as local control and communication stations, and they communicate through a bus line with a master control station on shipboard. The junction boxes include electrical capacitors charged during intervals between firings of the airguns. These capacitors are controllably discharged in response to command signals from the master station for firing the airguns. The junction boxes and a protective hose sheath containing the electrical power supply lines and containing communication bus lines to the respective junction boxes are pressurized with low pressure air during submerged towing for excluding water in the event of a leak.
摘要翻译：多个淹没控制站接线盒各自包括具有数据存储和传输能力的微处理器，气枪发射和相关电子电路以控制预定的气枪或气枪组。这些接线盒沿着气枪阵列在间隔的位置被牵引。电缆和高压空气供应线的部分可拆卸地联接到每个接线盒。由接线盒控制的预定气枪可拆卸地联接到其上。因此，牵引阵列中的气枪的数量可以通过联接或解耦接线盒和由它们控制的相关气枪来改变。接线盒通过增加低压空气自动冷却到船上，直到安全阀打开，以通过保护软管护套和接线盒建立连续的低压冷却流。相应接线盒中的本地电子微处理器单元用作本地控制和通信站，并且它们通过总线与船上的主控站进行通信。接线盒包括在气枪发射间隔期间充电的电容器。这些电容器响应于来自主站的用于点燃气枪的命令信号被可控地放电。包含电源线并且包含连接到相应接线盒的通信总线的接线盒和保护软管护套在浸入式牵引期间用低压空气加压，以便在发生泄漏的情况下排除水。

9. 发明授权

US4723230A High ambient liquid pressure-resistant electrical connector 失效
公开(公告)号：US4723230A
公开(公告)日：1988-02-02
申请号：US896395
申请日：1986-08-13
申请人： Stephen V. Chelminski
发明人： Stephen V. Chelminski
IPC分类号： E21B17/02 , G01V1/137 , H01R13/523 , G01V1/38
CPC分类号： H01R13/523 , E21B17/028 , G01V1/137
摘要： A high ambient liquid pressure-resistant electrical connector is shown with an airgun having a solenoid actuated valve mounted on the airgun. A multi-conductor electrical cable is connected by this pressure-resistant connector to a plurality of terminals of the solenoid valve for protecting from ambient liquid the terminals and the adjacent portions of the conductors. This pressure-resistant electrical connector includes a connector housing having an upper end and a lower end, with the lower end of the housing being mounted to the airgun. The connector housing has a fluid sealant chamber for enclosing the electrical terminals and adjacent portions of the conductors connected to the terminals and includes at least one barrier for engaging the cable to protect against ambient liquid seeping past the barrier to the electrical terminals. The connector housing defines a cylindrical space carrying a spring-loaded piston. The inner end of this cylindrical space communicates with the liquid sealant chamber, and the outer end is exposed to the ambient liquid for applying ambient pressure to the piston for urging the piston away from the outer end of the cylindrical space toward the inner end. The fluid sealant chamber and the inner end of the cylindrical space are filled with waterproof sealant fluid material, for example such as waterproof grease. Thus, ambient liquid pressure plus the pressure resulting from spring force on the piston is applied to the waterproof sealant fluid material filling the sealant chamber enclosing the terminals and adjacent portions of the conductors. Consequently, this sealant material is always at a pressure exceeding the pressure of ambient liquid for preventing ambient liquid from seeping into the chamber enclosing the terminals. A second sealant chamber containing fluid sealant material similarly maintained at pressure exceeding ambient pressure is shown surrounding the end of the cable sheath where the conductors exit from the cable sheath for preventing seepage of ambient fluid within the cable sheath around the conductors.

10. 发明授权

US4608675A Land seismic source method and apparatus 失效
标题翻译：陆地震源方法和装置
公开(公告)号：US4608675A
公开(公告)日：1986-08-26
申请号：US278669
申请日：1981-06-29
申请人： Stephen V. Chelminski
发明人： Stephen V. Chelminski
IPC分类号： G01V1/047 , G01V1/135 , G01V1/137 , G01V1/04
CPC分类号： G01V1/047 , G01V1/135 , Y10S181/401
摘要： An air gun is mounted in a reaction mass having an impulse-transmitting ground-contact plate movably mounted below the mass. This mass is in face-to-face contact with the plate over the major portion of the entire upper surface of the contact plate. Confined liquid is not employed. The air gun is charged with pressurized gas and fired, discharging the pressurized gas into the narrow horizontal interface region between reaction mass and plate. Rapid expansion of the discharged gas between mass and plate causes an intensely powerful seismic impulse to be transmitted into the earth. The air gun has a firing chamber for holding a charge of pressurized gas, a movable shuttle for suddenly discharging the pressurized gas, including upper and lower pistons with a hollow member connecting these pistons. A pedestal assembly carrying said shuttle is mounted from above to the reaction mass and extends down into the hollow shuttle member. When this air gun is fired, the lower piston moves away from a peripheral seal at the lower end of the firing chamber suddenly discharging pressurized gas from a central location radially outwardly into the narrow horizontal interface region. By suspending the pedestal assembly from above, powerful seismic waves can be generated using a relatively short shuttle stroke, and the gun can be positioned near the impulse-transmitting plate for directly discharging the pressurized gas into the interface region between plate and reaction mass.
摘要翻译：气枪安装在具有可移动地安装在质量下方的脉冲传递接地板的反作用物质中。该质量块在接触板的整个上表面的主要部分上与板面对面接触。密闭液体不被使用。气枪装有加压气体并点燃，将加压气体排放到反应物料与板之间的窄水平界面区域。质量和板块之间的排放气体的快速膨胀导致强大的地震冲击传播到地球。气枪具有用于保持加压气体的燃烧室，用于突出地排出加压气体的可移动梭，包括用连接这些活塞的中空构件的上下活塞。承载所述梭子的基座组件从上方安装到反作用物质并向下延伸到中空梭构件中。当该气枪被击发时，下部活塞远离燃烧室下端处的周边密封件突然将加压气体从中心位置径向向外排放到窄的水平界面区域。通过从上方悬挂基座组件，可以使用相对较短的行程来产生强大的地震波，并且可以将枪定位在脉冲传递板附近，以将加压气体直接排放到板和反作用块之间的界面区域。

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