JP4912659B2 - Shock wave continuous generator - Google Patents

Description

  The present invention relates to a continuous shock wave generator capable of repeatedly generating shock waves, and is used, for example, when removing landmines, removing snow, extinguishing fires, extinguishing or fighting dangerous or harmful animals or robbers, etc. it can.

  In recent years, research and development of a pulse detonation engine (PDE) that intermittently generates a detonation wave to acquire thrust and work has been performed in Japan, the United States, and Europe (see Non-Patent Document 1). . In this PDE, the self-running detonation wave compresses the unburned gas, so the thrust and work can be taken out without using a mechanism such as a compressor or pump, or by reducing their load, simplifying the engine structure As a result, the manufacturing cost can be reduced. Examples of PDE applications include rocket engines, air suction jet engines, and power generation engines. Detonation is a phenomenon in which shock wave and combustion are united and combustion is propagated at a very high speed (for example, 1,000 to 3,500 m per second). Detonation wave is a flame caused by combustion (heat generation). It is a shock wave that propagates with a reaction part), that is, with a release of energy by a high-speed chemical reaction.

  On the other hand, not only the detonation wave as described above, but also a shock wave without combustion is applied in various forms. For example, there is a technique for extinguishing a fire with an explosion shock wave, and a technique for converging a shock wave to a specific point, such as a convergent shock wave generator for crushing gallstones (see Non-Patent Document 2).

Jiro Kasahara, “Pulse Detonation Rocket and Thrust Increasing Method by Partial Filling Effect”, Journal of the Japan Combustion Society, Japanese Society of Combustion, May 31, 2005, Vol. 47, No. 140, p. 84-89 Kazuyoshi Takayama, “Shock Wave Handbook”, Springer Fairlark Tokyo Co., Ltd., December 6, 1995, p. 81-118

  By the way, when trying to apply a large force to a distant position, a solid or liquid must be used so far, and a force (pressure) cannot be applied by a gas. On the other hand, if a large force (pressure) can be applied to a distant location with gas, it is possible to transmit force to distant hazardous areas, for example, removing landmines, removing snow on high-voltage cables, etc. It is.

  In addition, when trying to generate a gas flow at a distant position, it is possible to generate a slow flow in a specific place with a fan or the like, or a high-speed flow in all directions by an explosion by a bomb, A high-speed flow could not be generated in a specific place. On the other hand, if a high-speed gas flow can be generated in a specific place at a distant position, for example, effective fire extinguishing can be performed, which is convenient.

  Further, when generating explosion sound, it is relatively easy to generate it once, but it is difficult to generate it continuously or repeatedly with a small device. On the other hand, if explosion sound can be generated continuously with a small-scale device, it is convenient because it is possible to repel dangerous or harmful animals such as bears, spiders and crows.

  As described above, a large force is applied to a distant position by a gas, a high-speed gas flow is generated at a specific position at a distant position, or a continuous explosion sound is generated by a small device. In order to satisfy these requirements, it is sufficient to generate a shock wave with explosion sound continuously in a specific location or direction, but for the following reasons, the pulse detonation engine ( The idea of applying the technology of PDE) was not reached. That is, as described above, the PDE technique aims to generate a detonation wave and acquire thrust and work using a high-temperature high-pressure gas obtained thereby. Therefore, since research on PDE is based on the premise that high-temperature and high-pressure gas generated by detonation is used as an energy source or thrust source, there is no room for the idea of using shock waves generated from detonation waves.

  In addition, as described above, there is already a technique for converging shock waves as an applied technique of shock waves, and conventionally, it has been possible to generate a convergent shock wave or a plane shock wave propagating in a specific place or a specific direction. Such a convergent shock wave or a plane shock wave could not be repeatedly generated with a simple device. As a PDE technology, there is a technology that repeatedly generates a detonation wave many times with a simple device configuration. As described above, from the PDE research, the idea of using a shock wave generated from a detonation wave is Since it does not occur, it was not linked to the idea of continuously generating shock waves using detonation waves, and further, there was no motivation to link PDE technology with existing shock wave convergence technology. Therefore, a continuous device of a divergent shock wave propagating on a divergent curved wave surface having a strong shock wave part in a specific direction that can obtain an effect substantially equivalent to that of a shock wave with a simple device, such as a convergent shock wave or a plane shock wave accompanied by an explosion sound. It was difficult to realize the occurrence.

  An object of the present invention is to provide a continuous shock wave generator capable of repeatedly generating a convergent shock wave, a plane shock wave, or a divergent shock wave having an effect substantially equivalent to these with a simple device configuration.

  The present invention achieves the object by combining a pulse detonation engine (PDE) technique for continuously generating explosion waves with an existing shock wave convergence technique.

  Specifically, the present invention is a continuous shock wave generator capable of repeatedly generating shock waves, a continuous detonation wave generator capable of repeatedly generating detonation waves, and the continuous detonation wave generator. A shock wave reflection member that reflects and reflects a shock wave obtained from the detonation wave generated by the continuous detonation wave generator, the continuous detonation wave generator includes a detonation tube that forms a passage for propagating the detonation wave; The detonation pipe is configured to include a starting device for starting detonation, and the shock wave reflecting member is connected in the vicinity of the outlet of the detonation pipe, and the detonation wave that reaches the outlet of the detonation pipe becomes a shock wave and spreads from the outlet position. In the middle of the detonation tube When the tonation wave becomes a shock wave and reaches the outlet of the detonation pipe and spreads from the exit position, or when the detonation wave becomes a shock wave and spreads from the outside of the outlet outside the detonation pipe It is a convergent shock wave that adjusts the wavefront shape of the shock wave by reflecting the going shock wave and converges to a specific point, a plane shock wave that propagates in a plane wavefront in a specific direction, or a divergent curved wavefront that has a strong shock wave part in a specific direction It is characterized by generating a divergent shock wave that propagates.

  Here, the “shock wave reflecting member” may be any member as long as the inner surface shape for reflecting the shock wave is suitable for controlling the wave front shape of the shock wave. From such a viewpoint, a plate-like member is preferable.

  In addition, the meaning of “converging to a specific point” is not limited to the case of converging to a single point in a strict sense, but has a certain size as in a specific place or a specific region. The case of propagating toward the convergence point is also included.

  Further, the term “planar wavefront” is not limited to a plane in a strict sense, but is intended to be substantially planar.

  In the present invention, when the detonation is started in the detonation pipe by the start device of the continuous detonation wave generator, the generated detonation wave propagates in the detonation pipe, reaches the outlet of the detonation pipe, and generates a shock wave from the outlet position. The generated detonation wave becomes a shock wave in the middle of the detonation tube and reaches the outlet of the detonation tube in the state of already being a shock wave and spreads from the exit position, or the generated detonation wave exits the detonation tube It propagates to the outside and spreads as a shock wave outside the exit. After that, the spreading shock wave is reflected by the shock wave reflecting member, the wavefront shape is adjusted, and the convergent shock wave that converges to a specific point, or the flat shock wave that propagates in a plane direction in a specific direction, or a strong shock wave in a specific direction. It becomes a divergent shock wave propagating on a divergent curved wavefront having a portion. Such a cycle is repeated a plurality of times.

  Accordingly, it is possible to apply a large force to a distant position by using the generated convergent shock wave or plane shock wave, or the divergent shock wave that can obtain substantially the same effect as these. For this reason, it is possible to transmit force to a remote dangerous area. For example, by propagating the generated shock wave toward the mine burial location and reflecting it, a large force (pressure) can be applied to the location, so the mine can be removed safely without touching the ground. It becomes possible. Further, for example, it is possible to easily generate an avalanche by continuously and simultaneously reflecting a plane shock wave over a wide area of the snow surface. Further, it is possible to safely remove snow on the high-voltage electric wire.

  And since a high-speed flow can be produced | generated easily and continuously in the distant position, it becomes possible to extinguish a fire by the high-speed flow. In addition, since the shock wave can be propagated continuously and in a specific point or in a specific direction, a more effective fire extinguishing method is realized compared to the conventional fire extinguishing method in which the shock wave of an explosion is propagated in all directions. The

  In addition, since explosion sounds can be generated at specific timings, it can be used as a rescue signal during a disaster such as when there is no electricity. In addition, explosion sounds can be generated continuously in a specific direction, which makes it possible to repel and extermination of dangerous or harmful animals such as bears, spiders and crows, or repel robbery and terrorists. It is possible to disperse the opponent without harming the opponent.

  Since the continuous shock wave generator of the present invention can be realized with a simple and small-scale device configuration, the device can be made portable in size for use in various applications as described above. It is possible to realize a good apparatus, and the above-mentioned object is achieved by these.

  More specifically, the following apparatus configuration can be adopted. That is, in the continuous shock wave generating device described above, the inner shape of the shock wave reflecting member is a spheroid, the outlet of the detonation tube is disposed at one focal position of the spheroid, and the shock wave reflecting member is disposed on the other side of the spheroid. It can be set as the structure which produces | generates the convergence shock wave which makes a focus position a convergence point.

  Further, in the above-described continuous shock wave generator, the inner shape of the shock wave reflecting member is a rotating paraboloid, the outlet of the detonation tube is disposed at the focal position of the rotating paraboloid, and the shock wave reflecting member is placed at the center of the rotating paraboloid. It is good also as a structure which produces | generates the plane shock wave which propagates in the direction along an axis | shaft.

  Furthermore, when it is set as the structure which produces | generates a plane shock wave, it is good also as a structure which connects the exit of a shock wave reflection member to the pipe interior space, and propagates the produced plane shock wave to the pipe interior space.

  When the plane shock wave is propagated to the space inside the tube as described above, the shock wave can be continuously propagated inside the tube (not the detonation tube), so that the substance attached to the inner wall of the tube can be easily removed. Can be removed. Then, by simply connecting the continuous shock wave generator of the present invention to the inlet of the inner space of the pipe, a sufficient deposit removing effect can be obtained even for an extremely long pipe.

  Moreover, in the shock wave continuous generation apparatus described above, the detonation tube may include a portion formed in a spiral shape.

  Thus, when the detonation tube is formed in a spiral shape, it is possible to reduce the size of the device, thereby realizing a more convenient device.

  And when making a detonation pipe | tube helical as mentioned above, you may arrange | position the part formed in the spiral shape of the detonation pipe | tube in the state wound around the outer periphery of a shock wave reflection member.

  Thus, when the detonation tube is spirally arranged and wound around the outer periphery of the shock wave reflecting member, it is possible to further reduce the size of the device, and the size of the entire device can be reduced. It becomes possible to approximate the size.

  As described above, according to the present invention, the continuous detonation wave generator and the shock wave reflecting member are connected, the detonation wave is repeatedly generated by the continuous detonation wave generator, and the shock wave obtained from the detonation wave is generated as the shock wave reflecting member. Since the wavefront shape of the shock wave is adjusted by reflecting the light, it is possible to repeatedly generate a convergent shock wave, a plane shock wave, or a divergent shock wave that can obtain substantially the same effect with a simple device configuration. .

  An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the overall configuration of a continuous shock wave generator 10 of the present embodiment. FIG. 2 is an explanatory diagram of the operation state of the continuous shock wave generator 10.

  In FIG. 1, a continuous shock wave generator 10 is a continuous detonation wave generator 20 capable of repeatedly generating a detonation wave, and is generated by the continuous detonation wave generator 20 connected to the continuous detonation wave generator 20. And a shock wave reflecting plate 50 for reflecting the shock wave obtained from the detonation wave.

  The continuous detonation wave generator 20 includes a detonation tube 30 that forms a passage for propagating the detonation wave, and a starter 40 that starts detonation within the detonation tube 30.

  In the present embodiment, the detonation tube 30 is, as an example, a straight tube that extends straight, and the end on the left side in the drawing in which the starting device 40 is provided is blocked, while the detonation tube 30 is on the right side in the drawing on the opposite side. The end portion is opened, and serves as an outlet 31 from which gas is ejected. The illustrated detonation tube 30 is schematically drawn to explain the function of the present invention, and therefore the tube length and the tube diameter do not necessarily reflect the actual size ratio. . The size relationship between the detonation tube 30 and the shock wave reflecting plate 50 and the size relationship between the detonation tube 30 and the starter 40 are the same, and do not necessarily reflect the actual size ratio.

The starter 40 includes a fuel supply system 41 that supplies fuel (for example, gaseous fuel such as ethylene and hydrogen) into the detonation pipe 30 and an oxidant (for example, oxygen or dinitrogen monoxide (N ₂ ) in the detonation pipe 30 O) and the like), an inert gas supply system 43 for supplying an inert gas (for example, helium and nitrogen) for scavenging (purging) in the detonation pipe 30, and detonation. An igniter 44 for starting the propagation of a detonation wave by igniting a premixed gas of fuel and oxidant filled in the tube 30 (for example, ignition by a high voltage spark) and a control for controlling the operation of the starter 40 The apparatus 45 is comprised.

  The fuel supply system 41 includes a fuel supply source 41A such as a cylinder, a fuel supply path 41B that connects the fuel supply source 41A and the detonation pipe 30, and an electromagnetic valve or the like provided in the middle of the fuel supply path 41B. And a valve 41C that can be freely operated.

  The oxidant supply system 42 is provided in the middle of the oxidant supply path 42B, an oxidant supply source 42A such as a cylinder, an oxidant supply path 42B connecting the oxidant supply source 42A and the detonation pipe 30, and the oxidant supply path 42B. And a valve 42C that can be freely opened and closed such as an electromagnetic valve.

  The inert gas supply system 43 is provided in the middle of the inert gas supply path 43B, an inert gas supply path 43B that connects the inert gas supply source 43A and the detonation pipe 30, and the inert gas supply path 43B. And a valve 43C that can be freely opened and closed such as an electromagnetic valve.

  The control device 45 is constituted by, for example, a computer, a sequencer, a relay circuit, or the like, and controls the opening / closing operation of the valves 41C, 42C, 43C and the timing of ignition by the igniter 44.

  The shock wave reflecting plate 50 is a plate-like shock wave reflecting member and is connected in the vicinity of the outlet 31 of the detonation tube 30. When the detonation wave reaching the outlet 31 of the detonation tube 30 becomes a shock wave and spreads from the outlet position to the outside of the tube, the shock wave reflection plate 50 becomes a shock wave in the middle of the detonation tube 30 and the shock wave is detonated. Reflects the expanding shock wave when it reaches the outlet 31 of the pipe 30 and spreads from the outlet position to the outside of the pipe, or when the detonation wave becomes a shock wave outside the outlet 31 of the detonation pipe 30 and spreads from the outside of the outlet 31 Thus, the wavefront shape of the shock wave is adjusted to generate a convergent shock wave that converges to a specific point. More specifically, in the present embodiment, the shape of the inner surface of the shock wave reflecting plate 50 is, for example, a part of a spheroid (a surface formed by rotating an ellipse around a major axis). The outlet 31 of the detonation tube 30 is disposed at one focal position (position of the focal point 51 in FIG. 2B) of the spheroidal surface of the shock wave reflecting plate 50, and the central axis of the detonation tube 30 and the shock wave reflecting plate 50. This coincides with the major axis of the spheroid. Therefore, the shock wave reflecting plate 50 is configured to generate a convergent shock wave having a convergence point at the other focal position of the spheroid (the position of the focal point 52 in FIG. 2D).

  In this embodiment, shock waves are repeatedly generated by the continuous shock wave generator 10 as follows.

  First, a detonation wave is generated by the continuous detonation wave generator 20. Specifically, in response to a command from the control device 45, the valve 41C of the fuel supply system 41 and the valve 42C of the oxidant supply system 42 are opened to supply fuel and oxidant into the detonation pipe 30 at the same time. Are filled with a premixed gas of fuel and oxidant (combustible gas). In this embodiment, as an example, a detonation premixed gas using a combination of hydrogen and oxygen or a combination of ethylene and oxygen is used. At this time, the premixed gas may be filled in the entire detonation tube 30 or may be partially filled up to the middle of the detonation tube 30, and further overflow from the outlet 31 of the detonation tube 30 to the outside. It may be filled.

  Subsequently, according to a command from the control device 45, the valve 41C of the fuel supply system 41 and the valve 42C of the oxidant supply system 42 are closed, and the unburned premixed gas is ignited by the igniter 44. Then, detonation is started, and as shown in FIG. 2 (A), a detonation wave 32 that is a shock wave accompanied by combustion propagates from the position of the igniter 44 toward the outlet 31 of the detonation tube 30, and behind the wave front. High-temperature and high-pressure burned gas is generated. The detonation wave 32 propagates to the outlet 31 of the detonation pipe 30 when the unburned premixed gas is filled in the entire detonation pipe 30, and the combustible gas disappears at the position of the outlet 31. It becomes a shock wave propagating in the air. Further, when the unburned premixed gas is partially filled up to the middle of the detonation pipe 30, the detonation wave 32 propagates through the portion filled with the unburned premixed gas, and then the combustible gas flows. When it disappears, it becomes a shock wave propagating in the air (or burned gas before one cycle), and this shock wave propagates to the outlet 31. Furthermore, when the unburned premixed gas is filled so as to overflow from the outlet 31 of the detonation pipe 30, the detonation wave 32 propagates to a position where the combustible gas outside the outlet 31 disappears. The shock wave propagates in the air outside the outlet 31. When the detonation wave 32 (shock wave in the case of a shock wave in the middle of the detonation pipe 30) reaches the outlet 31 of the detonation pipe 30, the high-temperature and high-pressure burned gas generated in the detonation pipe 30 is It is discharged from the outlet 31. Note that the time from ignition until the detonation wave 32 or shock wave reaches the outlet 31 is, for example, about 10 ms in the case of the detonation tube 30 having a total length of several meters.

  Next, as shown in FIG. 2B, a diffracted shock wave that diffracts a detonation wave (or a shock wave in the case of a shock wave in the middle of the detonation pipe 30) at the outlet 31 of the detonation pipe 30 and propagates radially. 53 is generated. Therefore, the shock wave spreads radially around the position of the focal point 51 of the spheroidal surface of the shock wave reflector 50.

  Further, as shown in FIG. 2C, the shock wave that has spread radially is reflected by the shock wave reflecting plate 50 to adjust the wave front of the shock wave. In the present embodiment, since the inner surface shape of the shock wave reflecting plate 50 is a spheroid, a convergent shock wave 54 is generated. The convergent shock wave 54 eventually converges to one point as shown in FIG. In this embodiment, this convergence point is the focal point 52 of the spheroid of the shock wave reflecting plate 50.

  Thereafter, in response to a command from the control device 45, the valve 43C of the inert gas supply system 43 is opened, the inert gas is fed into the detonation pipe 30 and the detonation pipe 30 is purged (purge). Close 43C.

  The cycle described above is repeated a plurality of times in response to a command from the control device 45. At this time, the command from the control device 45 is, for example, a predetermined time interval (for example, the shock wave is preset) while the user operating the continuous shock wave generating device 10 keeps pressing the button or turning on the switch. May be issued to occur continuously at 100 ms intervals, etc., or if the user presses the button once or switches on once, a command is issued to generate a shock wave once in one cycle of operation. May be. When the command is issued as in the latter case, it is necessary to repeatedly press or turn on the switch in order to repeatedly generate the shock wave. In the case of issuing a command as in the former case, when the operation time of the button or switch by the user is extremely short, or in the case of issuing a command as in the latter case, the user only presses the button or switch once. When the operation is not performed, the shock wave is generated only once as a result. However, the continuous shock wave generator of the present invention only needs to have a configuration capable of continuously generating the shock wave. There may be a case where the shock wave is generated only once. Further, when the user presses the button once or turns on the switch once, the shock wave may be repeatedly generated for a predetermined time (for example, several seconds) or for a predetermined number of times (for example, several times). Further, the time interval for generating the shock wave, that is, the time required for one cycle is about 100 ms in a normal setting, but may be set freely by the user to some extent.

  According to this embodiment, there are the following effects. That is, since the continuous shock wave generator 10 includes the continuous detonation wave generator 20 and the shock wave reflector 50, a convergent shock wave can be repeatedly generated.

  Therefore, by using the generated converging shock wave, it is possible to adjust the ratio of the major axis to the minor axis of the spheroid of the shock wave reflecting plate 50 by adjusting the ratio between the long axis and the short axis. Can be adjusted.) A large force can be applied. For this reason, force can be transmitted to a remote dangerous area, and for example, landmine removal, snow removal on a high-voltage electric wire, and the like can be performed safely.

  And since a high-speed flow can be produced | generated easily and continuously in the distant position, a fire can be extinguished by the high-speed flow. And since a shock wave can be propagated so that it may converge to a specific point continuously, a more effective fire extinguishing method is realizable compared with the past.

  In addition, since explosion sounds can be generated at specific timing, it can be used as a rescue signal during a disaster such as when there is no electricity. Furthermore, since explosion sounds can be continuously generated in a specific direction, dangerous or harmful animals such as bears, spiders and crows can be repelled or exterminated, or robbery or terrorists can be repelled.

  And since the shock wave is repeatedly generated by repeatedly generating the detonation wave using the continuous detonation wave generator 20, continuous generation of the shock wave can be realized with a simple and small-scale device configuration. For this reason, it can also be set as the apparatus which can be carried and a user-friendly apparatus can be implement | achieved.

  Note that the present invention is not limited to the above-described embodiment, and modifications and the like within a scope where the object of the present invention can be achieved are included in the present invention.

  For example, the continuous shock wave generator 10 of the above embodiment is configured to generate a convergent shock wave with the inner surface shape of the shock wave reflecting plate 50 being a spheroid, but as shown in FIG. It is good also as a structure which produces | generates a plane shock wave by making an inner surface shape into a paraboloid of revolution.

  In FIG. 3, a continuous shock wave generator 200 is a shock wave reflecting plate 250 that is a shock wave reflecting member having a shape different from that of the continuous detonation wave generating device 20 having the same configuration as that of the above embodiment and the shock wave reflecting plate 50 of the above embodiment. And.

  The shock wave reflection plate 250 is connected in the vicinity of the outlet 31 of the detonation tube 30 as in the case of the shock wave reflection plate 50 of the above embodiment. When the detonation wave reaching the outlet 31 of the detonation tube 30 becomes a shock wave and spreads from the outlet position to the outside of the tube, the shock wave reflection plate 250 becomes a shock wave in the middle of the detonation tube 30 and this shock wave is detonated. Reflects the expanding shock wave when it reaches the outlet 31 of the pipe 30 and spreads from the outlet position to the outside of the pipe, or when the detonation wave becomes a shock wave outside the outlet 31 of the detonation pipe 30 and spreads from the outside of the outlet 31 By doing so, the wavefront shape of the shock wave is adjusted and a plane shock wave 254 that propagates in a plane wavefront in a specific direction is generated. More specifically, the inner shape of the shock wave reflecting plate 250 is, for example, a rotating paraboloid (a surface formed by rotating a parabola around the axis of symmetry). Further, the outlet 31 of the detonation tube 30 is disposed at the focal point 251 of the rotational paraboloid of the shock wave reflector 250, and the central axis of the detonation tube 30 and the central axis of the paraboloid of the shock wave reflector 250 are the same. I'm doing it. Therefore, the shock wave reflection plate 250 is configured to generate a plane shock wave 254 that propagates in a direction along the central axis of the paraboloid of revolution.

  Even in the case of the continuous shock wave generator 200 that continuously generates a plane shock wave in this way, as in the case of the continuous shock wave generator 10 of the above-described embodiment, a large force is applied to a distant position using the generated plane shock wave. Therefore, it is possible to transmit force to a remote dangerous area. For example, it is possible to safely remove landmines, remove snow on high-voltage wires, and the like.

  Further, as in the case of the continuous shock wave generator 10 of the above-described embodiment, a high-speed flow can be easily and continuously generated at a distant position, so that the fire can be extinguished, Since a shock wave can be propagated in a specific direction, a more effective fire extinguishing method can be realized as compared with the prior art.

  Furthermore, as in the case of the continuous shock wave generator 10 of the above-described embodiment, an explosion sound can be generated at a specific timing, so that it can be used as a rescue signal at the time of a disaster, or a danger or harmful such as a bear, a frog or a crow Repel and extermination of various animals, and repel robbery and terrorists.

  Since the shock wave is repeatedly generated by repeatedly generating the detonation wave using the continuous detonation wave generator 20 as in the case of the continuous shock wave generator 10 of the above embodiment, the continuous generation of the shock wave is simple and small. It can be realized with a large-scale device configuration, and a portable device and a user-friendly device can be realized.

  Further, in the case of a configuration for generating a plane shock wave as in the continuous shock wave generator 200 shown in FIG. 3, the generated plane shock wave is not propagated to free space, but as shown in FIG. It is good also as a structure which connects the exit of a shock wave reflection member to the space in a pipe | tube, and propagates the produced | generated plane shock wave to the space in a pipe | tube. In FIG. 4, the outlet of the shock wave reflection plate 250 of the continuous shock wave generator 200 shown in FIG. 3 is connected to the in-tube space 260. Thus, if it is set as the structure which propagates a plane shock wave to the space 260 in a pipe | tube, the substance adhering to the inner wall of a pipe | tube can be removed easily, and sufficient adhering substance removal effect can be acquired also to a very long pipe | tube.

  Further, in the above embodiment, the shock wave reflecting plate 50 whose inner surface shape is a spheroid is about half or less than the spheroid in the major axis direction (that is, up to the position of the minor axis, or As shown in FIG. 5, the size of the ellipsoidal surface is more than half of the major axis direction (that is, the size including the position of the minor axis). It is good also as a shock wave reflection member which has the inner surface shape.

  In FIG. 5, a continuous shock wave generator 300 has an inner surface shape that is closer to the entire spheroidal surface than the continuous detonation wave generator 20 having the same configuration as that of the above embodiment and the shock wave reflector 50 of the above embodiment. And a shock wave reflecting plate 350 which is a shock wave reflecting member having The inner surface shape of the shock wave reflection plate 350 is a part of the spheroid surface, and the outlet 31 of the detonation tube 30 is arranged at the position of one focal point 351 as in the case of the above-described embodiment. A convergent shock wave 354 having a focal point at the position of the focal point 352 is generated, but unlike the case of the above-described embodiment, the size of the major axis direction is more than half (that is, the position of the minor axis). It is the size including). In such a case, the force can be transmitted more reliably to the convergence point at a short distance.

  In the above embodiment, the detonation tube 30 extends straight. However, the detonation tube in the present invention may include a spirally formed portion. A continuous shock wave generator that can be reduced in size and is more user-friendly can be realized. For example, like the shock wave continuous generation device 400 shown in FIG. 6, the spirally formed portion of the detonation tube 430 may be disposed in a state of being wound around the shock wave reflection plate 450. Thus, when the detonation tube 430 is spirally arranged and wound around the outer periphery of the shock wave reflecting plate 450, the device can be further reduced in size, and the size of the entire device can be reduced. It can approach the size of 450.

  Furthermore, the inner surface shape of the shock wave reflecting member in the present invention is not limited to a spheroid or paraboloid, but is a convergent shock wave that converges to a specific point (which may be a specific region) or a planar shape in a specific direction. As long as it is a shape that can generate a divergent shock wave propagating on a plane shock wave propagating on the wavefront (which can be regarded as a substantially flat wavefront) or a divergent curved wavefront having a strong shock wave portion in a specific direction Alternatively, for example, a shock wave reflecting plate 550 in which a trumpet-shaped member and a circular tubular member are connected may be used like a continuous shock wave generating device 500 shown in FIG. In the example of FIG. 7, the connection position between the shock wave reflecting plate 550 and the detonation pipe 30 is the position upstream of the outlet 31 of the detonation pipe 30, but the shock wave reflecting member in the present invention is a detonation. It may be connected to the outlet position of the tube.

  As described above, the continuous shock wave generator of the present invention is suitable for use in, for example, removing landmines, removing snow, extinguishing fires, extinguishing or fighting dangerous or harmful animals or robbers.

1 is an overall configuration diagram of a continuous shock wave generator according to an embodiment of the present invention. Explanatory drawing of the operation condition of the shock wave continuous generator of the said embodiment. The block diagram which shows the 1st modification of this invention. The block diagram which shows the 2nd modification of this invention. The block diagram which shows the 3rd modification of this invention. The block diagram which shows the 4th modification of this invention. The block diagram which shows the 5th modification of this invention.

Explanation of symbols

10, 200, 300, 400, 500 Continuous shock wave generator 20 Continuous detonation wave generator 30, 430 Detonation pipe 31 Detonation pipe outlet 32 Detonation wave 40 Starter 50, 250, 350, 450, 550 Shock wave which is a shock wave reflecting member Reflector 51,351 One focal point of spheroidal surface 52,352 Other focal point of spheroidal surface 54,354 Convergent shock wave 251 Focus of rotating paraboloid 254 Plane shock wave 260 Intra-tube space

Claims (5)

A shock wave continuous generator capable of repeatedly generating shock waves,
A continuous detonation wave generator capable of repeatedly generating a detonation wave, and a shock wave reflecting member connected to the continuous detonation wave generator and reflecting a shock wave obtained from the detonation wave generated by the continuous detonation wave generator And
The continuous detonation wave generator includes a detonation pipe that forms a passage for propagating the detonation wave, and a starter that starts detonation within the detonation pipe.
The detonation tube includes a portion formed in a spiral shape,
The shock wave reflecting member is connected in the vicinity of the outlet of the detonation tube, and when the detonation wave reaching the outlet of the detonation tube becomes a shock wave and spreads from the outlet position, the detonation wave becomes a shock wave in the middle of the detonation tube. When this shock wave reaches the outlet of the detonation pipe and spreads from the outlet position, or when the detonation wave becomes a shock wave outside the outlet of the detonation pipe and spreads from the outside of the outlet, the spreading shock wave is reflected. Generates a convergent shock wave that converges to a specific point by adjusting the wave front shape of the shock wave, a plane shock wave that propagates in a plane wavefront in a specific direction, or a divergent shock wave that propagates in a divergent curved wavefront having a strong shock wave part in a specific direction The shock wave continuous generator characterized by the above-mentioned. The inner surface shape of the shock wave reflecting member is a spheroid,
The outlet of the detonation tube is disposed at one focal position of the spheroid,
The continuous shock wave generator according to claim 1, wherein the shock wave reflecting member is configured to generate a convergent shock wave having a convergence point at the other focal position of the spheroid. The inner surface shape of the shock wave reflecting member is a rotating paraboloid,
The outlet of the detonation tube is located at the focal position of the rotating paraboloid;
The continuous shock wave generator according to claim 1, wherein the shock wave reflecting member is configured to generate a plane shock wave propagating in a direction along a central axis of a paraboloid of revolution.   4. The continuous shock wave generating device according to claim 1, wherein an outlet of the shock wave reflecting member is connected to a space in the tube, and the generated plane shock wave is propagated to the space in the tube. 5. Spirally formed portion of said detonation tubes, shock wave continuous generator according to any one of claims 1 to 4, characterized in that it is arranged in a state wound on the outer periphery of the shock wave reflector member.

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