Ultrasonic energetic material detonation device and ultrasonic energetic material detonation method

Abstract

The present invention discloses an ultrasonic energetic material detonation device and an ultrasonic energetic material detonation method. The ultrasonic energetic material detonation device comprises: an ultrasonic vibration generating mechanism, an ultrasonic antenna joint and a sample base, wherein the ultrasonic vibration generating mechanism comprises an ultrasonic generator and an ultrasonic probe, wherein the ultrasonic probe is electrically connected to the ultrasonic generator, wherein one end of the ultrasonic probe has an ultrasonic antenna, wherein the sample base is arranged on one side of the ultrasonic antenna along a first direction, and wherein the ultrasonic antenna joint is connected to the ultrasonic probe and the sample base, respectively. The ultrasonic energetic material detonation device provided by the present invention has a simple structure and is easy to maintain, and is more miniaturized and centralized than a traditional detonation device.

Description

Technical Field

[0001] The present invention particularly relates to an ultrasonic energetic material detonation device and an ultrasonic energetic material detonation method, belonging to the technical field of detonation test equipment. Background Art

[0002] Traditional pressure detonation devices usually use air cannons, booster circuits, etc. to detonate. Since air cannons are large and expensive, such detonation devices are expensive and bulky, making them unsuitable for widespread use in laboratories. Using a booster circuit to generate high voltage for detonation requires more energy to start, which results in the disadvantages of complex structure and high energy demand. Summary of the invention

[0003] The main purpose of the present invention is to provide an ultrasonic energetic material detonation device and an ultrasonic energetic material detonation method, so as to overcome the deficiencies in the prior art.

[0004] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention includes:

[0005] The first aspect of the present invention provides an ultrasonic energetic material detonation device, comprising: an ultrasonic vibration generating mechanism, an ultrasonic antenna joint and a sample base, wherein the ultrasonic vibration generating mechanism comprises an ultrasonic generator and an ultrasonic probe, the ultrasonic probe is electrically connected to the ultrasonic generator, one end of the ultrasonic probe has an ultrasonic antenna, and the sample base is arranged on one side of the ultrasonic antenna along a first direction;

[0006] The ultrasonic antenna joint is connected to the ultrasonic probe and the sample base respectively, and the ultrasonic antenna joint has at least the following functions:

[0007] a. Keeping the sample base on one side of the ultrasonic antenna;

[0008] b. limiting the movement of the sample along the second direction, maintaining the relative position of the sample base and the ultrasonic antenna stable, the second direction intersecting the first direction;

[0009] c. Make the sample base move along the first direction toward the ultrasonic antenna, so that the detonation sample on the sample base always maintains a close contact state with the ultrasonic antenna, and adjust the pressure between the sample base, the ultrasonic antenna and the detonation sample, wherein the magnitude of the pressure corresponds to the detonation time of the detonation sample.

[0010] Furthermore, the ultrasonic antenna joint includes a connecting joint and a plurality of limiting mechanisms, wherein the connecting joint is fixedly arranged on the ultrasonic probe, and the limiting mechanisms are respectively fixedly connected to the connecting joint and the sample base, and a plurality of the limiting mechanisms are arranged around the ultrasonic probe, and the limiting mechanisms are used to make the sample base tend to move along the first direction close to the ultrasonic antenna, and to keep the detonation sample on the sample base and the ultrasonic antenna in close contact at all times, and to adjust the pressure between the sample base, the ultrasonic antenna and the detonation sample, and the plurality of limiting mechanisms are used to limit the movement of the sample base along the second direction to keep the relative position of the sample base and the ultrasonic antenna stable.

[0011] In a more specific embodiment, a through positioning hole is provided on the sample base, and the limiting mechanism includes a rigid positioning rod and at least two limiting components, wherein the first end of the positioning rod is fixedly connected to the connecting joint, and the second end is arranged in the positioning hole, the aperture of the positioning hole is larger than the diameter of the positioning rod, and at least two limiting components are respectively arranged on both sides of the sample base along the axial direction of the positioning rod and connected to the positioning rod, and the sample base is limited between at least two limiting components, wherein the position of the limiting component on the positioning rod is adjustable, and the pressure between the sample base, the ultrasonic antenna and the detonation sample can be changed by changing the position of the sample base on the positioning rod.

[0012] Furthermore, the positioning rod is a threaded rod, the limiting component is connected to the positioning rod by a threaded connection, and the position of the limiting component on the positioning rod can be changed by screwing the limiting component.

[0013] Furthermore, the axial direction of the positioning rod is parallel to the first direction.

[0014] In another more specific embodiment, a positioning hole is provided on the sample base, and the limiting mechanism includes a rigid positioning rod, a first end of the positioning rod is fixedly connected to the connecting joint, and a second end is arranged in the positioning hole and has an interference fit with the positioning hole, and the position of the sample base on the positioning rod can be changed under the action of an external force, and by changing the position of the sample base on the positioning rod, the pressure between the sample base, the ultrasonic antenna and the detonation sample can be changed.

[0015] Further, the positioning hole is a through hole that penetrates the sample base or a slot that does not penetrate the sample base;

[0016] Furthermore, the axial direction of the positioning rod is parallel to the first direction.

[0017] In another more specific embodiment, a positioning hole is provided on the sample base, and the limiting mechanism includes a first limiting mechanism and a second limiting mechanism.

[0018] The first limiting mechanism includes a rigid positioning rod, a first end of which is fixedly connected to the connecting joint, and a second end of which is correspondingly arranged in the positioning hole, the aperture of the positioning hole is larger than the diameter of the positioning rod, and during the contact between the ultrasonic antenna and the detonating sample located on the sample base and the detonation of the detonating sample, the positioning rod and the bottom of the positioning hole always maintain a clearance fit; the second limiting mechanism includes a spring, the two ends of which are respectively arranged on the sample base and the connecting joint, and the spring is always in an elastically stretched state.

[0019] Furthermore, the axial direction of the positioning rod and the axial direction of the spring are parallel to the first direction.

[0020] Furthermore, the limiting mechanism also includes a first fixed bracket and a second fixed bracket, the first fixed bracket is fixedly arranged on the connecting joint, the second fixed bracket is fixedly arranged on the sample base, and both ends of the spring are detachably arranged on the first fixed bracket and the second fixed bracket respectively.

[0021] Furthermore, the sample base is provided with a sample groove for accommodating the detonation sample, and the positioning holes are arranged around the sample groove.

[0022] Furthermore, the sample base is provided with an observation window, and the observation window is arranged back to back with the sample slot.

[0023] Furthermore, the connecting joint is detachably connected to the ultrasonic probe.

[0024] Furthermore, the connecting joint is fixedly connected to the ultrasonic probe by means of a threaded connection.

[0025] Furthermore, the connecting joint has an internal thread structure, and the ultrasonic probe has an external thread structure matching the internal thread structure.

[0026] Furthermore, the ultrasonic probe, the ultrasonic antenna joint, the ultrasonic antenna and the sample slot are coaxially arranged.

[0027] Furthermore, the central axes of the ultrasonic probe, the ultrasonic antenna joint, the ultrasonic antenna and the sample tank are located at the same horizontal height.

[0028] In a more specific implementation, the ultrasonic energetic material detonation device further comprises a lifting frame, the ultrasonic probe is arranged on the lifting frame, and the lifting frame is used to support the ultrasonic probe and adjust the horizontal height of the ultrasonic probe.

[0029] A second aspect of the present invention provides an ultrasonic energetic material detonation method, the detonation method is implemented based on the ultrasonic energetic material detonation device, and the detonation method comprises:

[0030] Wrapping the energetic material in the flexible polymer material to form a "sandwich" type detonation sample, placing the detonation sample on the sample base, and adjusting the ultrasonic antenna joint to keep the ultrasonic antenna in close contact with the detonation sample;

[0031] The ultrasonic vibration generating mechanism applies vibration impact to the detonation sample through the ultrasonic antenna, so that the energetic material in the detonation sample moves continuously, and in the process of movement, it continuously generates heat by friction with the flexible polymer until detonation.

[0032] Furthermore, the detonation method also includes: adjusting at least one of the ultrasonic frequency output by the ultrasonic vibration generating mechanism and the pressure between the ultrasonic antenna and the detonation sample to change the detonation time of the detonation sample.

[0033] Compared with the prior art, the advantages of the present invention include:

[0034] The ultrasonic energetic material detonating device provided by the present invention has a simple structure and is easy to maintain. It is also more compact and centralized than traditional detonating devices.

[0035] The ultrasonic energetic material detonation device provided by the present invention adopts a variable frequency ultrasonic radiation source as a dynamic high voltage loading means, which makes the device have the unique advantages of controllable impact times and good repeatability, while the required starting energy is smaller and the detonation speed is faster.

[0036] The ultrasonic energetic material detonation device provided by the present invention is more convenient to assemble and disassemble, the sample base can be simply assembled and disassembled, and repetitive detonation operations can be performed more efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 It is a schematic diagram of the overall structure of an ultrasonic energetic material detonation device provided in Example 1 of the present invention;

[0039] Figure 2 It is a partial structural schematic diagram of an ultrasonic energetic material detonation device provided in Example 1 of the present invention;

[0040] Figure 3 It is a partial structural schematic diagram of an ultrasonic energetic material detonation device provided in Example 1 of the present invention;

[0041] Figure 4 It is a partial structural schematic diagram of an ultrasonic energetic material detonation device provided in Example 1 of the present invention;

[0042] Figure 5 It is a schematic structural diagram of a sample base in an ultrasonic energetic material detonation device provided in Example 1 of the present invention;

[0043] Figure 6 It is a partial structural schematic diagram of an ultrasonic energetic material detonation device provided in Example 2 of the present invention;

[0044] Figure 7 It is a schematic structural diagram of a sample base in an ultrasonic energetic material detonation device provided in Example 2 of the present invention;

[0045] Figure 8 It is a schematic diagram of the partial structure of an ultrasonic energetic material detonating device provided in Example 3 of the present invention. DETAILED DESCRIPTION

[0046] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the present invention after long-term research and extensive practice. The technical solution, its implementation process and principle, etc. will be further explained and illustrated in combination with the accompanying drawings and specific implementation cases. It should be noted that the embodiment of the present invention is intended to explain and illustrate the structural composition and working principle of the ultrasonic energetic material detonation device. Unless otherwise specified, the ultrasonic wave crusher used in the embodiment of the present invention is known to those skilled in the art and can be purchased commercially. The lifting frame, spring, sample base, ultrasonic antenna joint, etc. can all be purchased commercially or obtained by conventional processes known to those skilled in the art.

[0047] Example 1

[0048] See also Figure 1An ultrasonic energetic material detonation device includes an ultrasonic vibration generating mechanism 100, an ultrasonic antenna joint 200 and a sample base 400. The ultrasonic vibration generating mechanism 100 includes an ultrasonic generator 110 and an ultrasonic probe 120. The ultrasonic generator 110 is electrically connected to the ultrasonic probe 120. The ultrasonic antenna joint 200 is fixedly arranged on the ultrasonic probe 120. The sample base 400 is detachably arranged on the ultrasonic antenna joint 200.

[0049] Specifically, the ultrasonic vibration generating mechanism 100 is used to provide ultrasonic waves, the sample base 400 is used to carry the detonation sample, the ultrasonic probe 120 is in contact with the detonation sample on the sample base 400, and can transmit the generated ultrasonic waves to the detonation sample located between the sample base 400 and the ultrasonic probe 120, so that the energetic material in the detonation sample is constantly moving, and during the movement, it continuously generates heat by friction with the flexible polymer that wraps itself, and finally detonates due to the increase in temperature.

[0050] Specifically, the ultrasonic generator 110 is used to supply power to the ultrasonic probe 120 and adjust the working parameters of the ultrasonic probe 120. The ultrasonic probe 120 is used to convert the electrical power input by the ultrasonic generator 110 into mechanical power (i.e., ultrasonic waves) and then transmit it out. Exemplarily, the ultrasonic probe 120 may include a transducer and an amplitude transformer, etc., which are all known to those skilled in the art and the details thereof will not be repeated here.

[0051] For details, please refer to Figure 2-Figure 4 The ultrasonic antenna joint 200 includes a connecting joint 210, a plurality of rigid positioning rods 230 and a plurality of springs 240. The connecting joint 210 is fixedly connected to the ultrasonic probe 120. One end of the ultrasonic probe 120 has an ultrasonic antenna 121, and the ultrasonic antenna 121 can collide with a sample arranged on the sample base 400. A plurality of rigid positioning rods 230 are arranged around the ultrasonic probe 120. One end of the positioning rod 230 is fixedly connected to the connecting joint 210, and the other end can be movably inserted into the sample base 400. A plurality of springs 240 are arranged around the ultrasonic probe 120, and the two ends of the spring 240 are respectively connected to the connecting joint 210 and the sample base 400.

[0052] Specifically, the connection joint 210 is detachably connected to the ultrasonic probe 120. More specifically, the connection joint 210 is fixedly connected to the ultrasonic probe 120 by threaded connection; more specifically, the connection joint 210 has an internal thread structure, and the ultrasonic probe 120 has an external thread structure matching the internal thread structure, and the external thread structure on the ultrasonic probe 120 is connected with the internal thread on the connection joint 210, so that the two are detachably fixedly connected, and in the axial direction of the ultrasonic probe 120, the ultrasonic probe 120 and the connection joint 210 have a good and stable bonding force to ensure that the two do not produce relative movement along their own axial direction.

[0053] For details, please refer to Figure 5 Corresponding to the structure of the ultrasonic antenna joint 200, the sample base 400 is provided with a sample slot 410, a plurality of positioning holes 420 and a visible observation window 430. The sample slot 410 is used to accommodate the detonation sample, the plurality of positioning holes 420 are distributed around the sample slot 410, and the observation window 430 is arranged back to back with the sample slot 410. The state of the detonation sample in the sample slot 410 can be observed through the observation window 430. As a preferred solution, the centers of the plurality of positioning holes 420 are located on the same circumference, and the center of the circumference is located on the central axis of the sample slot 410. Specifically, multiple positioning holes 420 correspond one-to-one to multiple positioning rods 230, each positioning rod 230 is embedded / inserted into a positioning hole 420, the ultrasonic antenna 121 corresponds to the sample slot 410 (the ultrasonic antenna 121 can be extended into the sample slot 410 to ensure tight contact with the detonation sample located in the sample slot 410), and the two ends of each spring 240 are respectively connected to the connecting joint 210 and the sample base 400, and the spring 240 is always in an elastic stretched state.

[0054] It can be understood that the positioning of the sample base 400 can be achieved through the cooperation of the positioning rod 230 and the positioning hole 420. At the same time, the positioning rod 230 is embedded / inserted into the positioning hole 420, which can limit the relative movement of the sample base 400 and the connecting joint 210 along their own radial direction (i.e., the aforementioned second direction). The spring 240 arranged between the sample base 400 and the connecting joint 210 can not only limit the separation of the sample base 400 and the connecting joint 210 along their own axial direction, but also provide elastic restoring force so that the ultrasonic antenna 121 always maintains a state of resistance with the detonating sample located in the sample groove 410, thereby ensuring the continuous and stable transmission of ultrasonic waves. The elastic restoring force is converted into pressure between the ultrasonic antenna 121 and the detonating sample. By adjusting the elastic force of the spring, the pressure between the ultrasonic antenna 121 and the detonating sample can be changed, thereby achieving the adjustment of the detonation time of the detonating sample.

[0055] It should be noted that the aperture of the positioning hole 420 is larger than the diameter of the positioning rod 230. The positioning hole 420 can be a through hole that penetrates along the axial direction of the sample base 400, or a non-penetrating slot hole. However, when the positioning hole 420 is a slot hole, it is necessary to ensure that during the contact between the ultrasonic antenna and the detonation sample, there is always a gap between the end of the positioning rod 230 and the bottom of the positioning hole. If the end of the positioning rod 230 contacts the bottom of the positioning hole, the pressure between the ultrasonic antenna 121 and the detonation sample cannot continue to increase.

[0056] Specifically, a plurality of bolts 250 / 260 are fixedly arranged on the connecting joint 210 and the sample base 400, and the bolts 250 / 260 are threadedly connected to the connecting joint 210 / sample base 400. Both ends of the spring 240 have connecting rings, and the connecting rings at both ends of the spring 240 are sleeved on the bolts 250 / 260, thereby realizing a fixed connection between the spring 240 and the connecting joint 210 and the sample base 400 in the axial direction.

[0057] Specifically, in order to ensure the overall structural stability of the device and the efficient transmission of ultrasonic vibrations, the ultrasonic probe 120, the ultrasonic antenna 121, the connecting joint 210 and the sample slot 410 on the sample base 400 are coaxially arranged and located on the same horizontal line. More specifically, multiple positioning rods 230 are distributed on the same circumference, and the center of the circle on which the multiple positioning rods 230 are located is located on the central axis of the connecting joint 210, and the axis of the positioning rods 230 is parallel to the axis of the connecting joint 210. Similarly, multiple springs 240 are also distributed on the same circumference, and the center of the circle on which the multiple springs 240 are located is also located on the central axis of the connecting joint 210.

[0058] Specifically, the ultrasonic energetic material detonating device also includes a lifting bracket, and the ultrasonic probe 120 is arranged on the lifting bracket, and the lifting bracket is used to support the ultrasonic probe 120 and adjust the horizontal height of the ultrasonic probe 120; more specifically, the lifting bracket can be a structure that can be extended or lifted in the vertical direction. The specific structure for realizing the extension or lifting can be a form known to those skilled in the art and is not limited here.

[0059] The device uses a variable frequency (20KHz-20 MHz) ultrasonic radiation source as a dynamic high-voltage loading method. When the ultrasonic radiation source start signal is given, the ultrasonic wave continuously impacts the "sandwich" sandwich sample in the sample slot under the restriction of the flexible polymer (the micron-scale energetic material crystal is coated with PEG material, then heat treated, and after the surface coating is cured, it is placed in PDMS resin to prepare a "sandwich" sandwich sample), causing the energetic material in the sample to move continuously, and during the movement, it continuously generates heat through friction with the flexible polymer, and the temperature rises and finally detonates.

[0060] Exemplarily, the detonation sample in the present invention can be obtained by the following method:

[0061] The surface of the single crystal energetic material HMX is coated with different PEG (300, 400, 600) materials, the single crystal energetic material HMX coated with different PEG (300, 400, 600) materials is baked at 120°C for 15 minutes, and then the process is repeated until a coating layer with a thickness of about 20 um is formed;

[0062] A layer of 300um thick PDMS was coated on a 25.4mm sapphire window and cured at 100°C for 30 minutes, and then a second layer of 500um thick PDMS was applied. When the second layer of PDMS was slightly solidified, the crystals coated with different PEG (300, 400, 600) materials were immersed in PDMS with tweezers and cured at 100°C for 30 minutes. After the PDMS-crystal layer was cured, a third 500um thick PDMS cover layer was covered on the crystal and cured at 100°C for 60 minutes to completely wrap the crystal, thereby obtaining a "sandwich" interlayer sample.

[0063] Example 2

[0064] See also Figure 6 and Figure 7 The structure of an ultrasonic energetic material detonating device in this embodiment is basically the same as that in Embodiment 1, and the same parts of the two are not repeated here. The difference between the two is that the spring is omitted in this embodiment, and the part of the positioning rod 230 that cooperates with the sample base 400 is set as a threaded rod, and nuts 270 that threadably cooperate with the positioning rod 230 are arranged at intervals on the positioning rod 230. Correspondingly, a positioning hole 420 arranged around the sample groove is arranged on the sample base 400, and the positioning hole 420 is a through hole. The positioning rod 230 is arranged in the positioning hole 420, and the sample base 400 is restricted between two spaced nuts 270. By screwing the nut 270, the sample base 400 can be fixed on the positioning rod 230 and the position of the sample base 400 on the positioning rod 230 can be changed, thereby realizing the detachable fixation of the sample base 400 and the ultrasonic antenna joint 200.

[0065] Example 3

[0066] See also Figure 8 The structure of an ultrasonic energetic material detonating device in this embodiment is basically the same as that in Embodiment 2, and the same parts of the two will not be repeated here. The difference between the two is that the positioning rod 230 in this embodiment is interference fit with the positioning hole 420 on the sample base 400.

[0067] The ultrasonic energetic material detonation device provided by the present invention has a simple structure and is more miniaturized and centralized. The device can be modified by modifying the probe of the crusher and combining it with the sample base, so that the device has a simple structure, is easy to maintain, and has a low cost, and is more suitable for widespread use in laboratories.

[0068] The ultrasonic energetic material detonation device provided by the present invention can use a variable frequency ultrasonic radiation source as a dynamic high-voltage loading means, which has the unique advantages of controllable impact times and good repeatability compared to traditional detonation devices, and requires less starting energy. The ultrasonic radiation source can repeatedly impact the sample tens of thousands to hundreds of thousands of times in one second, and the impact energy is the same, which makes this device have the unique advantages of controllable impact times and good repeatability.

[0069] The ultrasonic energetic material detonation device provided by the present invention can control the detonation time, detonation rate and detonation power of energetic materials, and has broad application prospects in civilian and military applications. At the same time, the dynamic high-voltage loading method adopted by the device has great potential application in research under extreme conditions at the nano-micrometer scale.

[0070] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An ultrasonic energetic material detonation device, characterized in that: include: An ultrasonic vibration generating mechanism, an ultrasonic antenna joint and a sample base, wherein the ultrasonic vibration generating mechanism comprises an ultrasonic generator and an ultrasonic probe, the ultrasonic probe is electrically connected to the ultrasonic generator, one end of the ultrasonic probe has an ultrasonic antenna, and the sample base is arranged on one side of the ultrasonic antenna along a first direction; The ultrasonic antenna joint is connected to the ultrasonic probe and the sample base respectively, and the ultrasonic antenna joint has at least the following functions: a. Keeping the sample base on one side of the ultrasonic antenna; b. limiting the movement of the sample along the second direction, maintaining the relative position of the sample base and the ultrasonic antenna stable, the second direction intersecting the first direction; c. causing the sample base to move toward the ultrasonic antenna along the first direction, so that the detonation sample on the sample base is always in close contact with the ultrasonic antenna, and adjusting the pressure between the sample base, the ultrasonic antenna and the detonation sample, wherein the magnitude of the pressure corresponds to the detonation time of the detonation sample; The ultrasonic antenna joint includes a connecting joint and a plurality of limiting mechanisms, wherein the connecting joint is fixedly arranged on the ultrasonic probe, and the limiting mechanisms are respectively fixedly connected to the connecting joint and the sample base, and the plurality of limiting mechanisms are arranged around the ultrasonic probe, and the limiting mechanisms are used to make the sample base move in the first direction close to the ultrasonic antenna, and to make the detonation sample on the sample base always keep in close contact with the ultrasonic antenna, and to adjust the pressure between the sample base, the ultrasonic antenna and the detonation sample, and the plurality of limiting mechanisms can limit the movement of the sample base in the second direction to keep the relative position of the sample base and the ultrasonic antenna stable; The sample base is provided with a through positioning hole, the limiting mechanism comprises a rigid positioning rod and at least two limiting components, the first end of the positioning rod is fixedly connected to the connecting joint, and the second end is arranged in the positioning hole, the aperture of the positioning hole is larger than the diameter of the positioning rod, at least two limiting components are respectively arranged on both sides of the sample base along the axial direction of the positioning rod and connected to the positioning rod, the sample base is limited between at least two limiting components, wherein the position of the limiting component on the positioning rod is adjustable, and the pressure between the sample base, the ultrasonic antenna and the detonation sample can be changed by changing the position of the sample base on the positioning rod, wherein the positioning rod is a threaded rod, the limiting component is connected to the positioning rod by a threaded connection, the position of the limiting component on the positioning rod can be changed by screwing the limiting component, and the axial direction of the positioning rod is parallel to the first direction; Alternatively, a positioning hole is provided on the sample base, the limiting mechanism comprises a rigid positioning rod, a first end of the positioning rod is fixedly connected to the connecting joint, and a second end is arranged in the positioning hole and has an interference fit with the positioning hole, the position of the sample base on the positioning rod can be changed under the action of an external force, and the pressure between the sample base, the ultrasonic antenna and the detonation sample can be changed by changing the position of the sample base on the positioning rod, wherein the positioning hole is a through hole penetrating the sample base or a slotted hole not penetrating the sample base, and the axial direction of the positioning rod is parallel to the first direction; Alternatively, a positioning hole is provided on the sample base, and the limiting mechanism includes a first limiting mechanism and a second limiting mechanism, the first limiting mechanism includes a rigid positioning rod, a first end of the positioning rod is fixedly connected to the connecting joint, and the second end is correspondingly arranged in the positioning hole, the aperture of the positioning hole is larger than the diameter of the positioning rod, and during the contact between the ultrasonic antenna and the detonating sample located on the sample base and the detonation of the detonating sample, the positioning rod and the bottom of the positioning hole always maintain a clearance fit; the second limiting mechanism includes a spring, two ends of the spring are respectively arranged on the sample base and the connecting joint, and the spring is always in an elastically stretched state, wherein the axial direction of the positioning rod and the axial direction of the spring are parallel to the first direction.

2. The ultrasonic energetic material detonation device according to claim 1, characterized in that: The limiting mechanism also includes a first fixed bracket and a second fixed bracket, the first fixed bracket is fixedly arranged on the connecting joint, the second fixed bracket is fixedly arranged on the sample base, and both ends of the spring are detachably arranged on the first fixed bracket and the second fixed bracket respectively.

3. The ultrasonic energetic material detonation device according to claim 1, characterized in that: The sample base is provided with a sample groove for accommodating the detonation sample, and the positioning holes are arranged around the sample groove.

4. The ultrasonic energetic material detonation device according to claim 3, characterized in that: The sample base is also provided with an observation window, and the observation window is arranged back to back with the sample slot.

5. The ultrasonic energetic material detonation device according to claim 1, characterized in that: The connecting joint is detachably connected to the ultrasonic probe.

6. The ultrasonic energetic material detonation device according to claim 5, characterized in that: The connecting joint is fixedly connected to the ultrasonic probe by means of a threaded connection.

7. The ultrasonic energetic material detonation device according to claim 6, characterized in that: The connecting joint has an internal thread structure, and the ultrasonic probe has an external thread structure matching the internal thread structure.

8. The ultrasonic energetic material detonation device according to claim 1, characterized in that: The ultrasonic probe, the ultrasonic antenna joint, the ultrasonic antenna and the sample slot are coaxially arranged.

9. The ultrasonic energetic material detonation device according to claim 8, characterized in that: The central axis of the ultrasonic probe, the ultrasonic antenna joint, the ultrasonic antenna and the sample tank are located at the same horizontal height.

10. The ultrasonic energetic material detonation device according to claim 1, characterized in that: The ultrasonic energetic material detonation device further comprises: a lifting frame, on which the ultrasonic probe is arranged, and the lifting frame is used to support the ultrasonic probe and adjust the horizontal height of the ultrasonic probe.

11. A method for initiating an ultrasonic energetic material, characterized in that: The detonation method is implemented based on the ultrasonic energetic material detonation device according to any one of claims 1 to 10, and the detonation method comprises: Wrapping the energetic material in a flexible polymer material to form a "sandwich" interlayer detonation sample, placing the detonation sample on the sample base, and adjusting the ultrasonic antenna joint so that the ultrasonic antenna maintains close contact with the detonation sample; The ultrasonic vibration generating mechanism applies vibration impact to the detonation sample through the ultrasonic antenna, so that the energetic material in the detonation sample moves continuously, and in the process of movement, it continuously generates heat by friction with the flexible polymer until detonation.

12. The method for initiating ultrasonic energetic materials according to claim 11, characterized in that: The detonation method further includes: adjusting at least one of the ultrasonic frequency output by the ultrasonic vibration generating mechanism and the pressure between the ultrasonic antenna and the detonation sample to change the detonation time of the detonation sample.

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