106 results about "Blast wave" patented technology

The application discloses a test device and method for simulating the impact effect of super-high-speed penetration into the ground, wherein a static load loading system is used to apply static load to the periphery of a sample to simulate the ground stress environment, and a dynamic load loading system is used to apply impact dynamic load to the top of the sample to simulate the ground impact, wherein in the dynamic load loading system, a phase change reaction kettle is used to heat liquid CO2 to a supercritical high-pressure state, a liquid charging module is used to charge the phase change reaction kettle with liquid CO2, a barrel is used to receive the high-pressure gas released by the phase change reaction kettle and form an approximately planar ground shock wave, a stress wave lens module is used to adjust the width of the ground shock wave through a stress wave lens combination and act on the sample, and a control module can control the peak pressure of the ground shock wave by regulating the heating power of the phase change reaction kettle and can control the duration of the ground shock wave by adjusting the aperture of the barrel. The application realizes controllable and high-fidelity simulation of the impact effect of super-high-speed penetration into the ground.

The utility model relates to the technical field of adjusting support, concretely to a high airtightness civil air defence door device. The utility model discloses door frame and door leaf, the inside of door leaf is equipped with adjusting device, the adjusting device includes flange bearing and two racks, the circular arc surface of flange bearing is fixedly connected with door leaf, the inboard fixedly connected with the shaft of flange bearing, one end fixedly connected with the gear of the shaft, the outside of gear is engaged with two racks, one end fixedly connected with the connecting plate of rack, one end fixedly connected with the moving plate of connecting plate, one side of two moving plates is connected with door leaf slidingly. The traditional high airtightness civil air defence door device basically adopts single point locking structure, when single point locking, impact force (such as explosion shock wave) concentrates on single locking point, causes door leaf to bear non-uniform load, and the problem that partial door leaf is easily caused to be recessed or locking point welding place fatigue fracture.

The utility model relates to a fire and explosion integrated protection door belongs to the protection door field, for solving the crystallization that has not cleaned will be extruded between the door panel and the door frame sealing strip, not only will accelerate the aging, damage of sealing strip, reduce its service life, will also lead to the sealing is not strict, cannot effectively block the smoke and fire, high temperature and explosion shock wave, and then causes the fire spread, secondary explosion etc. accidental injury, seriously influence the fire and explosion core performance of protection door, can not satisfy the safety protection demand of the area of ship, a fire and explosion integrated protection door, including protection door main part, the door frame of rotation connection in the outside of protection door main part, through spring energy storage release drive rotary lever rotation, drive the scraper along the sealing strip inside profile fit rotation, thereby in the protection door closing process automatically removes the sea salt crystallization that adheres on the sealing strip, avoids the omission problem of artificial periodic cleaning, guarantees the air tightness and fireproof sealing performance of protection door.

The application discloses a mineral preselection method based on controllable shock wave pre-splitting, and relates to the technical field of mineral preselection, and comprises the following steps: pre-crushing ore to obtain pre-crushed ore, wherein the ore comprises minerals and rocks; conveying the ore with a particle size less than or equal to a small particle size in the pre-crushed ore to a ball mill for crushing; conveying the ore with a particle size greater than the small particle size in the pre-crushed ore to a controllable shock wave treatment device, performing shock wave operation on the pre-crushed ore by the controllable shock wave treatment device, transmitting the shock wave to the inside of the pre-crushed ore, depositing the shock wave energy in the medium density discontinuous region between the minerals and the rocks, and making the fissure autonomously expand in a shearing and stretching manner, so that the ore is crushed and primary crushed ore is obtained; and the shock wave operation uniformly reduces the mechanical strength of the primary crushed ore, and the effect of crushing the ore and preselecting the ore with different particle sizes is achieved.

The present application relates to the field of pollutant diffusion simulation and disaster emergency, in particular to a calculation method of pollutant point source explosion diffusion based on local micro-meteorological environment, comprising the following steps: S1. Data acquisition and preprocessing: obtaining local micro-meteorological data, point source pollutant parameters and terrain data, and performing data preprocessing; S2. Explosion parameter inversion: based on pollutant characteristics, initial release conditions and micro-meteorological environment parameters, key parameters of explosion shock wave and pollutant release are inverted; S3. Micro-meteorological-explosion-diffusion coupling simulation: a coupling model of micro-meteorological field, explosion shock wave field and pollutant diffusion field is constructed to simulate the interaction process; S4. Result output and visualization: the calculation results are sorted and analyzed, key information is output, and graphical display is performed. The present application realizes fine input and dynamic coupling of local micro-meteorological elements, establishes a linkage model of explosion shock wave and local airflow, and constructs a parameter adjustment mechanism for different local scenes.

This invention discloses a method for preparing an extreme environment protective coating for pipe fittings based on explosive processing. It relates to the field of metal-based composite material preparation and high-energy-rate surface modification technology, comprising: using a high-intensity shock wave generated by an explosive explosion as a driving force to drive a ceramic medium to move at high speed and impact the inner wall surface of a steel pipe, causing the ceramic medium to embed into the inner wall surface layer of the steel pipe, forming a ceramic particle-reinforced metal-based composite gradient structure. This invention's method for preparing an extreme environment protective coating for pipe fittings based on explosive processing, through multi-module collaboration, achieves digital design of the gradient pressure field, precise loading with dual-mode selectability, and online quantitative evaluation of the treatment effect, providing a complete solution for the controllable preparation of high-performance gradient structure steel pipes.

The application relates to the nuclear power technology field and discloses a nuclear power plant opening shock wave elimination device, which comprises an airflow channel, at least one bending part, and a flow passage cross section diameter of an airflow inlet end of the bending part being different from a flow passage cross section diameter of an airflow outlet end of the bending part; a ventilation opening arranged on a flow passage wall of the airflow channel and / or an outlet end wall of the airflow channel, the ventilation opening being located downstream of the bending part; the ventilation opening being in communication with a plant of the nuclear power plant; and a ventilation assembly arranged at the ventilation opening and comprising a plurality of angle-adjustable guide vanes, the guide vanes guiding airflow into the plant according to a set angle. Through cooperation of the airflow channel and the ventilation assembly, the application realizes multiple reflection and flow guiding of high-energy airflow shock waves, consumes shock wave energy, avoids high-energy shock waves directly impacting the plant, realizes the wave elimination purpose, and also meets the ventilation demand in the plant.

The application discloses a kind of dangerous goods storage tank's quick erection protection device of peace-war conversion, pre-buried foundation is buried underground and is closed by protective cover plate, does not affect usual traffic and operation and maintenance;Protection framework is formed by column, cross bar splicing, column is fixed with pre-buried foundation, cross bar is quickly inserted with column, outer extension suspender is fixed to the top of framework and extends outward;Composite protection plate is assembled in the grid hole of protection framework by mounting block, adopts galvanized steel plate and concrete board sandwich structure and sprays polyurea explosion-proof paint;Protective net includes inner net, outer net, first top net and second top net, inner net covers framework, outer net and inner net form preset filling cavity, top net is fixed with outer extension suspender.The application is light in weight during peacetime, does not occupy operation space, can be quickly erected and fill buffer material into filling cavity to form reinforced protection layer during wartime, can effectively resist explosion shock wave, fragment and unmanned aerial vehicle attack, realize the quick peace-war conversion of storage tank protection, convenient to disassemble and assemble, strong stability.

1. The name of the design product: liquid oxygen fracturing device. 2. The use of the design product: the design product is a device that realizes efficient crushing through the chemical reaction of liquid oxygen and fuel to produce high pressure shock wave, mainly applied to mine exploitation, building demolition, road and bridge construction and other engineering blasting operations. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

This invention relates to the field of mineral processing technology, specifically to an intelligent roller pressure adjustment system and method for a continuous shock wave ore crushing device. The intelligent roller pressure adjustment system is integrated into the crushing device and includes: a data acquisition module for real-time acquisition of the thickness h of the ore layer within the rotary crushing chamber and the effective operating probability η of the controllable shock wave crushing unit; and a processing module for calculating the real-time roller pressure P based on the data acquired by the data acquisition module using a formula. t The execution module is used to adjust the driving force of the hydraulic push rod in the ore pre-splitting unit according to the real-time roller pressure Pt calculated by the processing module, so as to realize closed-loop feedback adjustment of the extrusion roller pressure. This invention intelligently and precisely adjusts the roller pressure according to the real-time operating conditions of the crushing system to ensure that the continuous controllable shock wave crushing device always operates in the optimal state.

A component (2) for containing fluid fuel, which will be impacted by a shock wave incident on the component (2). The component (2) includes a first portion (4) and a second portion (6). The first portion (4) and the second portion (6) define a chamber (8) configured to contain the fluid fuel. The first portion (4) and the second portion (6) are connected at a connector (10). At least a portion of the connector (10) follows a non-linear path.

The present invention provides a handpiece that is less prone to shaking and can be held stably when outputting shock waves, and a shock wave device equipped with such a handpiece. [Solution] The device comprises a grip portion 2 held by the therapist, a main body portion 3 positioned facing forward near the upper end portion 2a of the grip portion 2 and having an applicator 5 that delivers shock waves to the patient positioned at its front end, and a trigger switch 4 provided on the grip portion 2 and operated by the hand holding the grip portion 2, wherein a curved portion 2b that curves forward is formed on the rear surface of the grip portion 2 at a position that includes the axis line C of the main body portion 3. The X-axis is a coordinate axis along the front-rear direction, with the direction indicated by the arrow being forward and the opposite direction being backward.

The invention relates to a ballistic construction material, particularly for use in the field of defense. The invention is characterized in that the ballistic brick (1) shown in Figure 3, which is made of cement, iron powder, ribbed iron rod and sand, may be arranged as shown in Figure 4 so as to construct a building resistant to bullets, explosives, shrapnel, shock waves and impacts.

This invention discloses a high-pressure pneumatic rupture-type impact launcher for animal testing, belonging to the technical field of animal combat trauma simulation test equipment. The device includes a high-pressure air chamber, an air path adapter, a controllable on / off valve group, a short cavity, a diaphragm, and a diaphragm clamping and fixing structure. The high-pressure air chamber, air path adapter, and short cavity are sequentially connected. The diaphragm is installed on the end face of the short cavity through the clamping and fixing structure, forming a high-pressure ruptureable sealing structure. The device can be selectively equipped with sealing elements, a circular opening launch structure, and a square opening launch structure, enabling the simulation and preparation of various combat trauma models such as pure airflow impact, explosive shock wave, random combined injury from grenade explosion, high-speed precision projectile injury, and high-speed directional fragmentation injury. This invention features a compact structure, reliable sealing, and flexible operating condition switching. It can both reproduce the real random injury effects of the battlefield and achieve high-precision standardized injury testing, making it suitable for various animal combat trauma mechanism studies and protective effectiveness evaluations.

This utility model discloses a safety protection isolation frame for non-metallic mine blasting, including a base plate and side frames. An impact plate is rotatably connected to the top surface of the base plate via a hinge. Limiting grooves are formed on both the left and right sides of the base plate. Limiting blocks are fixedly connected to the lower end of the side walls of the side frames, and the limiting blocks are horizontally inserted into the inner side of the limiting grooves. A telescopic rod is telescopically and slidably connected to the top of the side frames. An interception net is provided between the left and right side frames, and the interception net is located above the impact plate. This utility model, by setting an inclined impact plate on the surface of the base plate, can effectively block and guide the shock wave generated by blasting upwards, greatly reducing the horizontal impact force. At the same time, in conjunction with the interception net between the side frames, it can intercept the flying debris, preventing the debris from flying directly out of the mine entrance area, and significantly improving the safety protection level of blasting operations.

This invention provides a comprehensive evaluation method for the reaction level of ammunition safety tests based on different parameters, comprising: Step 1, establishing qualitative criteria for the reaction level corresponding to different evaluation parameters; Step 2, quantifying the reaction level criterion of each evaluation parameter by using the ratio of the measured value of each evaluation parameter in the ammunition safety test to the value during static explosion of the ammunition; Step 3, determining the shock wave overpressure peak value, fragment velocity, and fragment size as the main evaluation parameters, and determining the crater diameter and the intensity of the explosion fireball as auxiliary evaluation parameters; Step 4, determining the coordinates of the measuring point location; Step 5, determining the baseline value of each evaluation parameter. The comprehensive evaluation method of this invention comprehensively considers the test results of multiple evaluation parameters for integrated evaluation, which is more comprehensive and accurate than evaluation based on a single evaluation parameter. The comprehensive evaluation method of this invention assigns quantitative criteria to the qualitative criteria of the reaction level evaluation parameters and determines the threshold for segmented quantification, which can effectively reduce the influence of subjective factors on the determination of the reaction level.

This utility model relates to the field of explosion-proof tank technology, and more particularly to a composite material explosion-proof tank. The technical solution includes an explosion-proof tank body, with connectors at the upper and lower ends of the tank body, and upper and lower covers threadedly connected to the connectors respectively. The explosion-proof tank body comprises, from the inside out, an inner steel liner, a middle filling layer, and an outer composite material layer. The inner steel liner is a hollow cylindrical structure made of stainless steel with a thickness of 5-8mm. The middle filling layer fills the outside of the inner steel liner, and the outer composite material layer covers the outside of the middle filling layer. This utility model effectively reduces the penetration of shock waves and fragments. The inner steel liner, with its high-strength stainless steel material, resists the initial impact; the middle filling layer efficiently absorbs and buffers residual energy; and the outer composite material layer further disperses the impact force. The three layers work synergistically to effectively reduce the penetration of shock waves and fragments, better protecting the safety of personnel and facilities around the tank.

This invention relates to the field of safe blasting construction technology and discloses a safe blasting construction method using nonlinear damping holes, comprising the following steps: S1: Clearing obstacles in the underwater blasting area, underwater positioning and marking are performed by a professional surveying vessel or divers to accurately mark the positions of all blast holes. According to design requirements, a drilling machine drills nonlinear damping holes at the edge of the blasting area or in front of the structure to be protected to form a vibration isolation zone and weaken the propagation of the blast shock wave to the surrounding environment; S2: The drilling machine is used again to perform underwater drilling according to the designed hole depth and angle. During the drilling process, the effects of water flow and visibility must be overcome. After completion, divers or equipment are used to inspect the hole positions and depths to ensure that they meet the charging conditions. The purpose is to solve the problem that the current linearly equidistantly arranged damping holes restrict the vibration isolation reliability of the damping holes and increase structural damage and safety risks.

This invention discloses a wearable underwater explosion impact protection device with an external spherical structure, including a protective module and a rope fastener. The protective module is arranged along the length of the protected structure, and the rope fastener is fixed to the protected structure. The rope fastener tightens the protective module to the protected structure, so that the protective module fits the geometric shape of the protected structure to form a wrap-around fit. When the shock wave and bubble pulsation load generated by the underwater explosion are applied, the shock wave blocking component absorbs part of the energy of the oncoming shock wave through its own deformation. The shock-resistant spherical structure is filled with air to block the propagation of the shock wave, greatly weakening the intensity of the shock wave. In addition, after one or more shock wave blocking components undergo large deformation or damage, the protective function can be efficiently restored through rapid disassembly and reassembly, solving the problem of the main structure being in a high-risk state for a short period of time after a disaster.

Disclosed in the present application are a power tool and a tool head thereof. The tool head comprises a tool body and a shank, wherein the tool body comprises a main body portion, an impact head located at one end of the main body portion, and a transition portion located at the other end of the main body portion; the shank is inserted into an impact power apparatus; the shank is connected to the end of the transition portion away from the main body portion, and the shank extends in the axial direction of the tool body; the transition portion has a first connecting end face connected to the shank and a second connecting end face connected to the main body portion; and the area of the second connecting end face is greater than that of the first connecting end face. In the present invention, the radial cross-sectional dimension of the transition portion gradually increases; and when a shock wave propagates inside the tool head, a generated reflected wave is small, such that more energy can be transferred to an object to be processed, thereby improving the impact efficiency.

A kind of high current air-insulated switchgear, including switch cabinet body and its inside cable chamber, the inside of switch cabinet body is equipped with reinforcing framework, the side of reinforcing framework is hingedly connected with the cable chamber cover plate matched with the inner wall of cable chamber by multiple hinges, the outside wall of cable chamber cover plate is threadedly connected with the outside wall of reinforcing framework by multiple fixed bolts, since the utility model is by setting explosion-proof plate in cable chamber cover plate, and storing fire extinguishing agent under vacuum condition inside explosion-proof plate, combining with the design of one-way valve triggered by pressure, explosion risk caused by arc fault in cable chamber can be effectively coped with, when the pressure in cable chamber increases sharply, one-way valve opens automatically, fire extinguishing agent sprays out quickly, and timely extinguishes fire, prevent explosion shock wave and high-temperature gas from causing harm to surrounding equipment and personnel, cooperate reinforcing framework and multiple point fixed bolt and firmly install cable chamber cover plate on switch cabinet body, the stability and explosion-proof performance of overall structure are enhanced.

The application discloses a large-overload experiment system simulating missile launching conditions, and belongs to the technical field of aerospace experiment equipment, which comprises a shock wave converging device for placing explosives, a wave generator, a carrying platform, a test product, a rotating pull rope and an energy absorption device, the energy absorption device is arranged above the test product through a support, the energy absorption device comprises a middle shaft and first energy absorption sheets, the impact force generated after the explosion of the explosives in the shock wave converging device is transmitted to the test product through the wave generator and the carrying platform, when the test product flies out due to the impact and acceleration, the rotating pull rope drives the test product to rotate around the energy absorption device, the transverse movement of the test product is converted into rotation, the unique movement conversion mode effectively converts the kinetic energy of the product, and the speed of the test product is gently reduced, the time required for deceleration is greatly reduced, after the experiment is completed, the experiment can be repeated by only replacing the first energy absorption sheets, and the project cycle can be greatly shortened.

This invention relates to the field of electronic information technology, and in particular to a low-overshoot, high-sensitivity coupled piezoelectric effect shock wave pressure sensor, comprising a piezoelectric measuring element, a plastic damping layer, a variable-thickness elastic layer, a constraint substrate, and leads; the variable-thickness elastic layer, the plastic damping layer, and the piezoelectric measuring element are sequentially bonded together from top to bottom to form a vibrating element; the constraint substrate has a blind-hole structure, with an inner step constructed around the top of the constraint substrate, and the vibrating element is embedded in the inner step to form a circumferentially fixed constraint boundary; a cylindrical deformation cavity is provided at the bottom of the inner step to provide space for the plastic flexural deformation of the vibrating element under the action of a shock wave. This invention can suppress the central inertial effect and peak overshoot phenomenon, and utilizes the high stiffness and strong plastic damping characteristics of the metal thin film to improve the sensor's frequency response and pressure measurement duration, solving the problems of insufficient measurement pulse width of the viscoelastic stiffness layer and damping layer on the descending edge of the pressure curve and electrical relaxation of the piezoelectric device.

The present application relates to the technical fields of spherical tank protection, and particularly relates to a liquefied hydrocarbon spherical tank composite protection structure and a design method thereof. The liquefied hydrocarbon spherical tank composite protection structure comprises a tank body protection cover for protecting the tank body. The tank body protection cover comprises an impact resistance layer in contact with the tank body and an energy absorption layer arranged on the impact resistance layer. The impact resistance layer comprises a grid and ceramic sheets arranged in a plurality of unit grids of the grid. By using the protection structure, the tank body is protected by the tank body protection cover comprising the impact resistance layer and the energy absorption layer, and the impact resistance layer comprises the grid and the ceramic sheets arranged in the plurality of unit grids of the grid. In actual application, the safety of the spherical tank can be effectively ensured, and large splashes and / or explosion shock waves impacting the spherical tank to cause damage to the spherical tank can be prevented. The present application has the advantages of simple operation, simple structure, high safety and cost saving.

The present invention provides a support stand that allows a shock wave handpiece to be placed in nearly the same position, and a shock wave apparatus equipped with the support stand. [Solution] The support stand 4 has a body part receiver 4a that receives the main body part 9 of the handpiece 3, and at the front end of the body part receiver 4a, a recess 4c corresponding to the larger diameter part 9a of the handpiece 3 is provided on the bottom surface of the body part receiver 4a. A movement prevention part (tip protrusion 4d) is provided on the body part receiver 4a to prevent the handpiece 3, which is placed on the support stand 4 so that the larger diameter part 9a of the handpiece 3 is positioned in the recess 4c of the body part receiver 4a, from moving forward.

This utility model discloses a gate valve with explosion-proof function, relating to the field of gate valves. The utility model includes a gate valve body, both sides of which are connected to connecting pipe flanges via explosion-proof mechanisms. The explosion-proof mechanism includes an explosion-proof pipe with a "Z"-shaped structure. A first buffer hose and a second buffer hose are installed on the explosion-proof pipe to absorb the energy generated by deflagration. This utility model alters the transmission path of the deflagration shock wave through the Z-shaped structure of the explosion-proof pipe, weakening the impact energy intensity. Simultaneously, the first and second buffer hoses absorb high-frequency vibration energy through deformation, preventing the impact from directly reaching the gate valve body. Furthermore, the shock-absorbing pad at the flange connection compresses and deforms to isolate residual impact, preventing bolt shear failure. Its rigid gasket maintains a flat sealing surface, and the shock-absorbing collar dissipates impact energy.

The application discloses a sheath type explosion shock wave cable deicing device, and aims to provide a sheath type explosion shock wave cable deicing device which is suitable for radially deicing thick ice on an overhead cable, has good deicing effect and is not easy to damage the overhead cable. The sheath type explosion shock wave cable deicing device comprises a sheath assembly, the sheath assembly comprises an inner sheath and an outer sheath, a space surrounded by the inner sheath forms a cable passing channel, a cable passes through the cable passing channel, a space surrounded by the inner sheath and the outer sheath forms a closed detonation inner cavity, an outer surface of the outer sheath is provided with a plurality of sheath holes which are connected with the detonation inner cavity, an ice breaking sealing plug is arranged in the sheath hole, the ice breaking sealing plug seals the sheath hole, and the ice breaking sealing plug can be separated from the sheath hole; and an initiating device is arranged in the detonation inner cavity.

This invention discloses a shockwave device, comprising an inner tube; a balloon connected to the inner tube, the balloon having a accommodating cavity; a support wire, at least partially located within the accommodating cavity, the distal end of the support wire connected to the inner tube; and an electrode assembly disposed on the support wire, the radial distance between the electrode assembly and the balloon being constant. This invention, by placing the support wire within the accommodating cavity and the electrode assembly on the support wire, enables the electrode assembly to approach the inner wall of the balloon while maintaining a constant radial distance during balloon expansion, reducing the attenuation of shockwave energy propagation, improving treatment effectiveness, and simultaneously avoiding balloon rupture, thus enhancing treatment safety.

The application relates to a kind of deep water explosion under reinforced cylindrical shell structure indentation deformation calculation method, belong to the technical field of underwater explosion.It is determined by model overall parameter, boundary condition is determined according to the characteristics of reinforced structure, the calculation of deep water explosion load, including shock wave, multiple bubble pulsation load, the differential equation of shell plate motion is established to solve indentation deformation and the final deformation is calculated according to the static water pressure work correction deformation deflection;Among them, boundary treatment is divided into three types of fixed boundary, elastic support boundary and mixed boundary;Load processing considers the coupling effect of shock wave load, multiple bubble pulsation load and static water pressure.The application considers comprehensive factors, quickly evaluates deformation, and provides important support for subsequent evaluation of the dynamic response of reinforced cylindrical shell structure under deep water explosion.

The application provides an energy-focusing forward shock wave guide tube, relates to the technical field of shock wave guide tubes, and comprises a guide tube body, a fluid pipe, a shock wave generating assembly, a reflection wing assembly and an adjusting assembly; the guide tube body comprises a guide wire cavity and a shock wave generating cavity which are independently arranged; the fluid pipe, the reflection wing assembly and the shock wave generating assembly are all located in the shock wave generating cavity; the reflection wing assembly is located between the fluid pipe and the shock wave generating assembly, one end of the reflection wing assembly is fixed relative to the fluid pipe along the axial direction of the fluid pipe, and the other end is connected with the adjusting assembly; the adjusting assembly is in sliding fit with the fluid pipe along the axial direction of the fluid pipe and is configured to adjust the included angle between the reflection wing assembly and the fluid pipe, so as to adjust the shock wave focusing performance. The above-mentioned forward shock wave guide tube not only effectively avoids the shielding effect of the metal guide wire on the electric field distribution and the hindering of the shock wave propagation path, but also can realize the targeted disintegration of the shock wave generating assembly on different calcification degrees of lesions.