An ultrahigh pressure and ultrahigh overload controllable launching device and a control method thereof

Abstract

This invention belongs to the field of impact testing technology and discloses an ultra-high pressure and ultra-high overload controllable launch device, including an ultra-high pressure gas generator, a controllable pressure relief device, a launcher, and a launch tube. The controllable pressure relief device includes: a shear ring fixed between the ultra-high pressure gas generator and the launcher; a supplementary pressure-bearing component inserted into the launch tube, one end of which is movable to abut or move away from the launcher; the ultimate pressure of the supplementary pressure-bearing component is greater than the pressure difference between the upper and lower ultimate pressure limits of the shear ring; the supplementary pressure-bearing component and the shear ring work together to restrict the movement of the launcher before launch; and a pneumatic controller for the supplementary pressure-bearing component connected to the supplementary pressure-bearing component for controlling the connection and disconnection between the supplementary pressure-bearing component and the launcher. A control method is also provided. This device and method are suitable for ultra-high acceleration and can precisely control the pressure relief process to achieve precise control of the launch process.

Description

Technical Field

[0001] This invention belongs to the field of impact testing technology, and particularly relates to an ultra-high voltage and ultra-high overload controllable launching device and its control method. Background Technology

[0002] There are two types of test apparatus for high-speed impact testing: one uses pyrotechnic devices such as ballistic guns, which have high testing efficiency, but their widespread application is limited due to the regulated nature of pyrotechnics; the other uses a multi-stage air cannon system, where high-pressure gas propels the impact test projectile to accelerate, reaching speeds exceeding 700 m / s. The rapid release device, a key component of high-speed impact testing, directly determines the success rate of the test. However, existing rapid release devices are complex in structure and have unsatisfactory control effects. Under ultra-high pressure conditions, open-valve rapid release devices require extremely high valve strength and control precision. Currently, ultra-high pressure valves generally have small flow diameters and long response times, making it difficult to meet the requirements of large-diameter, high-mass projectile impact tests. Diaphragm-type rapid release devices typically work in conjunction with valves, and also face technical challenges such as instantaneous control, large flow rates (due to the difficulty of fully opening the diaphragm), and reliable sealing. Summary of the Invention

[0003] The technical problem to be solved by this invention is to overcome the deficiencies and defects mentioned in the background art above, and to provide an ultra-high pressure and ultra-high overload controllable launch device and its control method suitable for ultra-high acceleration and capable of precise control of the decompression process. To solve the above technical problem, the technical solution proposed by this invention is as follows:

[0004] A controllable launching device for ultra-high pressure and ultra-high overload includes an ultra-high pressure gas generator, a controllable pressure relief device, a launcher, and a launch tube, wherein the controllable pressure relief device includes:

[0005] A shear ring is fixed between the ultra-high pressure gas generator and the emitter;

[0006] A supplementary pressure-bearing component is installed on the launch tube. One end of the supplementary pressure-bearing component is movable to abut against or move away from the launch body. The ultimate pressure of the supplementary pressure-bearing component is greater than the pressure difference between the upper limit and the lower limit of the ultimate pressure of the shear ring. The supplementary pressure-bearing component and the shear ring work together to restrict the movement of the launch body before the launch body is launched.

[0007] A supplementary pressure-bearing component pneumatic controller, connected to the supplementary pressure-bearing component, is used to control the supplementary pressure-bearing component to press against or move away from the launcher;

[0008] During launch, the pressure of the ultra-high pressure gas generator is increased to a level greater than the upper limit of the shear ring's ultimate pressure bearing capacity, but less than the sum of the lower limit of the shear ring's ultimate pressure bearing capacity and the ultimate pressure bearing capacity of the supplementary pressure bearing component. The supplementary pressure bearing component leaves the launch body, and the gas from the ultra-high pressure gas generator is rapidly released, destroying the shear ring and propelling the launch body to accelerate within the launch tube.

[0009] In one embodiment, the launcher includes a cylindrical section and a conical section, and the supplementary pressure-bearing component is a limiting rod. The end face of the limiting rod that abuts against the launcher is located in the conical section of the launcher, and the two end faces are in contact with each other when the limiting rod abuts against the launcher. The pneumatic controller of the supplementary pressure-bearing component is connected to the limiting rod and is used to control the limiting rod to abut against or move away from the launcher.

[0010] In one embodiment, the supplementary pressure bearing component is a limiting pin, and the launcher has a corresponding pin hole. The pneumatic controller of the supplementary pressure bearing component is connected to the limiting pin and is used to control the limiting pin to insert into or leave the pin hole, so as to realize the connection and disconnection between the supplementary pressure bearing component and the launcher.

[0011] In one embodiment, the supplementary pressure-bearing component pneumatic controller includes: a pneumatic cylinder, a first piston is provided inside the pneumatic cylinder, the bottom of the first piston is connected to the supplementary pressure-bearing component, a pressure relief pipe is connected to the wall surface of the pneumatic cylinder above the first piston, a control valve is provided on the pressure relief pipe, an accumulator is connected to the wall surface of the pneumatic cylinder below the first piston, and a second piston is provided inside the accumulator;

[0012] During operation, high-pressure gas is pre-charged to the upper part of the first piston of the pneumatic cylinder, pushing the first piston to push the supplementary pressure bearing component to fit against the launcher. At the same time, the second piston is pushed to move and compress the air in the accumulator. The pressure of the ultra-high pressure gas generator is increased to a level greater than the upper limit of the shear ring's ultimate pressure but less than the sum of the ultimate pressures of the shear ring and the supplementary pressure bearing component. The control valve is opened, and the compressed gas in the accumulator pushes the second piston to move in the opposite direction, thereby pushing the first piston back and quickly cutting off the connection between the supplementary pressure bearing component and the launcher. The gas in the ultra-high pressure gas generator is released rapidly, destroying the shear ring and thus propelling the launcher to accelerate.

[0013] In one embodiment, the pneumatic cylinder includes a pneumatic section and a hydraulic section. The space above the first piston is the pneumatic section, and the space below the first piston is the hydraulic section. The accumulator is divided into a hydraulic chamber and a pneumatic accumulator chamber by a second piston, and the hydraulic chamber is connected to the hydraulic section.

[0014] In one embodiment, the ultimate bearing pressure of the supplementary pressure-bearing component is greater than twice the pressure difference between the upper limit and the lower limit of the ultimate bearing pressure of the shear ring.

[0015] In one embodiment, the ultra-high pressure gas generator is provided with a heating tube for heating the gas source inside the ultra-high pressure gas generator, and an injection tube is provided at the end of the ultra-high pressure gas generator for adding the gas source medium.

[0016] In one embodiment, the gas source medium is solid CO2 or liquid CO2, and the heating tube is an electric heating tube, which converts solid CO2 or liquid CO2 into supercritical CO2 by constant volume heating and pressure increase through electric heating.

[0017] Based on the same inventive concept, a control method for the ultra-high voltage and ultra-high overload controllable transmitting device as described above is also provided, comprising:

[0018] Add gas to the ultra-high pressure gas generator;

[0019] The supplementary pressure-bearing component is connected to the launcher by controlling the pneumatic controller of the supplementary pressure-bearing component.

[0020] The pressure of the ultra-high pressure gas generator is increased to a level greater than the upper limit of the shear ring's ultimate bearing pressure but less than the sum of the ultimate bearing pressures of the shear ring and the supplementary pressure-bearing components.

[0021] The connection between the supplementary pressure-bearing component and the launcher is cut off by controlling the pneumatic controller of the supplementary pressure-bearing component.

[0022] The gas from the ultra-high pressure gas generator is released rapidly, breaking the shear ring and thus propelling the launcher to accelerate inside the launch tube.

[0023] In one embodiment, it includes:

[0024] The pneumatic cylinder is pre-charged with high-pressure gas, which pushes the first piston to push the supplementary pressure bearing component into contact with the launcher surface; at the same time, the second piston is pushed to move until the pressure at both ends of the second piston of the accumulator is balanced.

[0025] Increase the pressure of the ultra-high pressure gas generator to a level greater than the upper limit of the shear ring's ultimate bearing pressure but less than the sum of the ultimate bearing pressures of the shear ring and the limiting rod;

[0026] When the control valve is opened, the compressed gas in the accumulator pushes the second piston to move in the opposite direction, thereby pushing the first piston back. The pressure-bearing component quickly leaves the launcher, and the gas in the ultra-high pressure gas generator is released rapidly, breaking the shear ring and thus pushing the launcher to undergo ultra-high overload acceleration within the launch tube.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: In the ultra-high pressure and ultra-high overload controllable launching device and method of this application, the controllable launching device includes an ultra-high pressure gas generator, a controllable pressure relief device, a launching body, and a launching tube. The controllable pressure relief device includes a shear ring fixed to the tail of the launching body, a supplementary pressure-bearing component detachably connected to the launching body, and a pneumatic controller for the supplementary pressure-bearing component. The forces of the shear ring and the supplementary pressure-bearing component work together on the launching body. In the prior art, controllable launching is achieved by shearing the shear ring under high pressure. Compared with gunpowder launching methods, there are no pyrotechnics, and no residue remains after launching, essentially achieving clean launching. Since the higher the launching high pressure of the ultra-high pressure gas generator, the higher the requirements for the device and the greater the operational danger, the designed launching high pressure is generally slightly greater than the ultimate pressure of the shear ring. However, due to limitations in the shear ring material and processing precision, the shearing force of the shear ring always exhibits a certain degree of deviation. For example, the difference between the upper and lower limits of the shear ring's ultimate pressure is approximately 10 MPa (this is just an example; in reality, it could be other values). This results in a non-one-to-one correspondence between the theoretically designed ultra-high pressure gas generator's launch high-pressure and the shear ring's shearing force, and makes precise control of the launch time impossible. In this application, the launch of the launcher is precisely controlled through the combined action of a supplementary pressure-bearing component and the shear ring. The ultimate pressure of the supplementary pressure-bearing component is greater than the pressure difference between the upper and lower limits of the shear ring's ultimate pressure. The supplementary pressure-bearing component is detachably connected to the launcher, and its contact with or separation from the launcher is controlled by a pneumatic controller. During launch, the pressure of the ultra-high pressure gas generator is increased to a level greater than the upper limit of the shear ring's ultimate pressure but less than the sum of the lower limit of the shear ring's ultimate pressure and the ultimate pressure of the supplementary pressure-bearing component. Under these conditions, when the supplementary pressure-bearing component presses against the launcher, the combined force of the shear ring and the supplementary pressure-bearing component acts on the launcher, preventing the ultra-high pressure gas generator from breaking the shear ring and launching the launcher. However, as soon as the supplementary pressure-bearing component leaves the launcher, the gas from the ultra-high pressure gas generator instantly breaks the shear ring, achieving rapid release and propelling the launcher to accelerate within the launch tube. Through flexible control of the supplementary pressure-bearing component, precise control of the launcher can be achieved. Using the apparatus and method of this application, the launch time of the launcher can be controlled within the range of several milliseconds to tens of milliseconds, and the apparatus and method of this application can be applied to experimental conditions with ultra-high accelerations reaching 20,000g and ultra-high pressures reaching 250 MPa.

[0028] Furthermore, especially under ultra-high pressure gas launch conditions, the shear ring may undergo premature plastic deformation. If a large pin hole is set on the launcher and a common plug-in shear pin is used, the effective load-bearing capacity of the shear ring and shear pin cannot be effectively controlled, which can easily cause the shear pin to fail or the shear ring to break prematurely, making it impossible to achieve controllable pressure relief.

[0029] When the supplementary pressure-bearing component is a limiting rod, an inclined angle is set on the end face of the limiting rod to mate with the surface of the conical section of the launcher. This inclined surface faces the ultra-high pressure gas generator. Since the thrust of the piston by the pneumatic controller is basically constant, the load on the connecting limiting rod is ensured to be basically constant. Even if there is slight slippage between the limiting rod and the launcher on the contact inclined surface, the supporting effect of the limiting rod on the launcher remains unchanged after the force is decomposed because the angle of the inclined surface remains unchanged. That is, the pneumatic controller plays the role of adaptively regulating the load-bearing capacity of the supplementary pressure-bearing component. After the pressure relief device is activated, the launcher advances in the launch tube. The launcher pushes the smooth inclined surface set on the limiting rod to move upward in parallel, which minimizes interference with the launcher and protects the limiting rod.

[0030] This patent ensures the functional reliability of the controllable pressure relief device by setting a pneumatic controller for the supplementary pressure bearing component and an inclined surface on the launcher that can adaptively adjust the load on the supplementary pressure bearing component. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 A schematic diagram of the structure of an ultra-high voltage and ultra-high overload controllable transmitting device according to one embodiment;

[0033] Figure 2 A schematic diagram of the structure of an ultra-high voltage and ultra-high overload controllable launching device according to another embodiment;

[0034] Figure 3 This is a force and motion analysis diagram of the launcher of an ultra-high voltage and ultra-high overload controllable launcher according to one embodiment. Detailed Implementation

[0035] To facilitate understanding of the present invention, the present invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of protection of the present invention is not limited to the following specific embodiments.

[0036] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of the invention.

[0037] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0038] Please see Figure 1-2 A controllable launcher for ultra-high pressure and ultra-high overload includes an ultra-high pressure gas generator 1, a controllable pressure relief device 2, a launcher 3, and a launch tube 4. The ultra-high pressure gas generator 1 and the launch tube 4 are sealed together. The launcher 3 is located at one end of the launch tube 4 near the ultra-high pressure gas generator 1. The controllable pressure relief device 2 is located between the ultra-high pressure gas generator 1 and the launcher 3. Specifically, the controllable pressure relief device 2 includes: a shear ring 21 fixed to the tail of the launcher 3, a supplementary pressure-bearing component 24, and a pneumatic controller 22 for the supplementary pressure-bearing component. A supplementary pressure-bearing component 24 is installed on the launch tube 4, and one end of the supplementary pressure-bearing component 24 is movable to abut against or move away from the launch body 3. The supplementary pressure-bearing component 24 is located at the tail of the launch body 3 and near the shear ring 21. The ultimate pressure bearing capacity of the supplementary pressure-bearing component 24 is greater than the pressure difference between the upper limit and the lower limit of the ultimate pressure bearing capacity of the shear ring 21. The ultimate pressure bearing capacity of the shear ring 21 is the ultimate pressure that the shear ring 21 can withstand at the moment of failure when the pressure of the ultra-high pressure gas generator 1 increases. The pneumatic controller 22 of the supplementary pressure-bearing component is connected to the supplementary pressure-bearing component 24 and is used to control whether the supplementary pressure-bearing component 24 abuts against or moves away from the launch body 3. During launch, the pressure of the ultra-high pressure gas generator 1 is increased to a level greater than the upper limit of the ultimate pressure bearing capacity of the shear ring 21 but less than the sum of the lower limit of the ultimate pressure bearing capacity of the shear ring 21 and the ultimate pressure bearing capacity of the supplementary pressure-bearing component 24.

[0039] The ultra-high pressure and ultra-high overload controllable launching device of this application includes a controllable pressure relief device 2 comprising a shear ring 21 between an ultra-high pressure gas generator 1 and a launching body 3, and a supplementary pressure bearing member 24 passing through the launching tube 4. One end of the supplementary pressure bearing member 24 is movable to abut or move away from the launching body 3. A pneumatic controller 22 for the supplementary pressure bearing member is connected to the supplementary pressure bearing member 24. The combined forces of the shear ring 21 and the supplementary pressure bearing member 24 act on the launching body 3. In the prior art, controllable launching is achieved by shearing the shear ring 21 under high pressure. Since the higher the launching high pressure of the ultra-high pressure gas generator 1, the higher the requirements for the device and the greater the operational danger, the designed launching high pressure is generally slightly higher than the ultimate pressure of the shear ring 21. However, even with sufficiently high material and machining precision control for the shear ring 21, the shearing force of the shear ring 21 still exhibits some deviation and fluctuation. For example, the difference between the upper and lower limits of the shear ring 21's ultimate pressure can fluctuate by approximately 10 MPa (this is just an example; in reality, it could be other numerical deviations). This results in a non-one-to-one correspondence between the theoretically designed high-pressure gas generator 1 and the shearing force of the shear ring 21. In this application, the launch of the launcher 3 is controlled by the combined action of the supplementary pressure-bearing component 24 and the shear ring 21. The ultimate pressure of the supplementary pressure-bearing component 24 is greater than the pressure difference between the upper and lower limits of the shear ring 21's ultimate pressure. The supplementary pressure-bearing component 24 is controlled to press against or move away from the launcher 3 by the pneumatic controller 22. During launch, the pressure of the ultra-high-pressure gas generator 1 is increased to a level greater than the upper limit of the shear ring 21's ultimate pressure but less than the sum of the lower limit of the shear ring 21's ultimate pressure and the ultimate pressure of the supplementary pressure-bearing component 24. Under these conditions, as long as the supplementary pressure-bearing component 24 holds the launcher 3 in place, the combined force of the shear ring 21 and the supplementary pressure-bearing component 24 acts on the launcher 3, preventing the ultra-high pressure gas generator 1 from breaking the shear ring 21 and launching the launcher. However, as soon as the supplementary pressure-bearing component 24 leaves the launcher 3, the gas from the ultra-high pressure gas generator 1 can be rapidly released, breaking the shear ring 21 and propelling the launcher 3 to accelerate within the launch tube 4. Through the flexible control of the supplementary pressure-bearing component 24, precise control of the launcher 3's launch process can be achieved. Using the device of this application, the launch time of the launcher 3 can be controlled within the range of several milliseconds to tens of milliseconds, and the device of this application can be applied to experimental conditions with ultra-high accelerations up to 25000g and ultra-high pressures reaching 280 MPa.

[0040] The "fast" in this application refers to the corresponding action occurring within a time range of several milliseconds to tens of milliseconds.

[0041] Specifically, in one embodiment, the launcher 3 includes a cylindrical section 31 and a conical section 32. The supplementary pressure-bearing member 24 is a limiting rod. When the limiting rod abuts against the launcher 3, the contact surface is located at the conical section 32 of the launcher 3, and the end faces of the limiting rod and the launcher 3 abut against each other. The pneumatic controller 22 of the supplementary pressure-bearing member is connected to the limiting rod and is used to control the limiting rod to abut against or move away from the launcher 3. The end face of the limiting rod has an inclined angle that matches the surface of the conical section 32 of the launcher 32, and the inclined surface faces the ultra-high pressure gas generator 1.

[0042] Specifically, in one embodiment, the supplementary pressure-bearing component 24 is a limiting pin. A corresponding pin hole 30 is provided on the launcher 3. The supplementary pressure-bearing component pneumatic controller 22 is connected to the limiting rod and is used to control the insertion or removal of the limiting pin from the pin hole 30, so that the supplementary pressure-bearing component 24 abuts against or moves away from the launcher 3. The supplementary pressure-bearing component 24 uses the cooperation of the limiting pin and the pin hole 30, combined with the control of the supplementary pressure-bearing component pneumatic controller 22. The structure is very simple, and the operation is simple and controllable. Preferably, the end of the limiting pin away from the first piston 221 has a slope. The slope facing the ultra-high pressure gas generator 1 is designed with a slope, which can increase the pressure-bearing capacity of the limiting pin, thus appropriately reducing the diameter of the limiting pin and lowering the material requirements. Furthermore, there are multiple supplementary pressure-bearing component pneumatic controllers 22 and supplementary pressure-bearing components 24, evenly distributed around the launcher 3. Multiple supplementary pressure-bearing component pneumatic controllers 22 and supplementary pressure-bearing components 24 are controlled synchronously, also for the purpose of reducing the diameter of the limiting pin and lowering the material requirements.

[0043] Specifically, in one embodiment, the supplementary pressure-bearing pneumatic controller 22 includes: a pneumatic cylinder 220, a first piston 221 inside the pneumatic cylinder 220, a limiting rod connected to the bottom of the first piston 221, a pressure relief pipe 222 connected to the wall of the pneumatic cylinder 220 above the first piston 221, a control valve 223 on the pressure relief pipe 222, and an accumulator 224 connected to the wall of the pneumatic cylinder 220 below the first piston 221, a second piston 225 inside the accumulator 224. More specifically, a piston rod 2211 is provided on the first piston 221, and the piston rod 2211 is fixedly connected to the supplementary pressure-bearing component 24.

[0044] Specifically, in one embodiment, the pneumatic cylinder 220 includes a pneumatic section 226 and a hydraulic section 227. The space above the first piston 221 is the pneumatic section 226, and the space below the first piston 221 is the hydraulic section 227. The accumulator 224 is divided into a hydraulic chamber 228 and a pneumatic accumulator chamber 229 via a second piston 225. The hydraulic chamber 228 is connected to the hydraulic section 227. The hydraulic section 227 and the hydraulic chamber 228 of the pneumatic cylinder 220 and the accumulator 224 are hydraulically powered, which reduces the structural sealing requirements.

[0045] During operation, high-pressure gas is pre-charged into the pneumatic section 226 of the pneumatic cylinder 220, pushing the first piston 221 to move the supplementary pressure bearing member to abut against the launcher 3. At the same time, the second piston 225 is pushed to move and compress the air in the pneumatic energy storage chamber 229 of the accumulator 224. The pressure of the ultra-high pressure gas generator 1 is increased to a level greater than the upper limit of the shear ring 21's ultimate pressure bearing capacity but less than the sum of the ultimate pressure bearing caps of the shear ring 21 and the supplementary pressure bearing member 24. The control valve 223 is opened, and the compressed gas in the pneumatic energy storage chamber 229 of the accumulator 224 pushes the second piston 225 to move in the opposite direction, thereby pushing the first piston 221 to retract. The supplementary pressure bearing member 24 quickly leaves the launcher 3, releasing its restraining effect on the launcher 3. The gas in the ultra-high pressure gas generator 1 is rapidly released, breaking the shear ring 21 and thus propelling the launcher 3 to accelerate.

[0046] When the additional pressure-bearing component 24 is a limit rod, adaptive adjustment can be achieved. For details, please refer to [link / reference needed]. Figure 3 The downforce F is provided by the pneumatic cylinder 220. y Furthermore, this pressure remains constant during the heating and pressurization process of the ultra-high pressure gas generator 1. During this process of increasing internal pressure in the ultra-high pressure gas generator 1, the shear ring 21 may undergo slight elastic deformation, such as... At this moment, the launcher 3 as a whole has a slight displacement in the direction of its forward movement. At this time, the limiting rod is pushed upwards by a slight displacement due to the inclined surface of the limiting rod. Since the change in air pressure inside the pneumatic cylinder caused by this displacement is very small, the contact surface pressure F can be considered as... N The downward pressure F provided by pneumatic cylinder 220 remains unchanged. y It remains unchanged. That is, within a controllable range, the resistance F x No change indicates that the limit lever provides F at this time. x It can adapt to the internal pressure of the ultra-high pressure gas generator 1 without changing.

[0047] When it is necessary to launch the launcher 3, the downward pressure F is removed using the supplementary pressure-bearing pneumatic controller 22. y Contact surface pressure F N It also drops to zero, unable to provide resistance F. x The pressure at the tail of the launcher 3 will directly shear the shear ring 21 and move it forward, thereby achieving adaptive control of the launch process.

[0048] When the supplementary pressure-bearing component 24 is a limit pin, the limit pin and the pin hole 30 fit tightly together. When the shear ring 21 undergoes slight deformation, the limit pin will also undergo a certain slight deformation. Since the rigidity and strength of the limit pin can withstand this slight deformation, the shear ring 21 and the limit pin work together to jointly bear the high pressure of the ultra-high pressure gas generator 1.

[0049] The intervention of the supplementary pressure-bearing component 24 is required to work together with the shear ring 21 to increase the pressure limit of the shear ring 21 itself. If the increase in the pressure limit of the shear ring 21 caused by the supplementary pressure-bearing component 24 is to be equal to the ultimate pressure of the supplementary pressure-bearing component, its value should be greater than the pressure difference between the upper and lower limits of the ultimate pressure of the shear ring. Preferably, in one embodiment, the ultimate pressure of the supplementary pressure-bearing component 24 is more than twice the pressure difference between the upper and lower limits of the ultimate pressure of the shear ring 21. The ultimate pressure of the supplementary pressure-bearing component 24 is set to be larger to improve the safety factor.

[0050] Specifically, in one embodiment, the end of the ultra-high pressure gas generator 1 is sealed by a flange 12, forming a sealed high-pressure chamber 10. An injection pipe 14 is provided on the flange, through which a gas source is introduced. The ultra-high pressure gas generator 1 has a built-in heating pipe 16 for heating the gas source inside. The bottom of the ultra-high pressure gas generator 1 is fixed to the ground by a base 5. A pressure ring 18 is provided between the ultra-high pressure gas generator 1 and the shear ring 21 to press the tail of the emitter 3, facilitating the shear ring 21 to rupture in the desired direction and manner.

[0051] Preferably, the gas source can be solid CO2 or liquid CO2, which is heated by an electric heating tube 16 built into the ultra-high pressure gas generator 1. The solid or liquid CO2 is converted into supercritical CO2 through constant-volume temperature and pressure increase using electric heating. Electric heating is a physical process; no chemical reaction occurs during the process of increasing the CO2 medium from low pressure to ultra-high pressure. Compared to gunpowder or other chemical exothermic agents, which easily produce high-temperature gases or corrosive substances, electric heating makes the entire process clean and pollution-free. This not only improves the service life of the launch tube and high-pressure container but also reduces maintenance costs. Furthermore, it has the advantages of reusability and controllable energy output.

[0052] Once CO2 reaches its critical point (7.38 MPa, 31.3 °C) and its pressure exceeds this point, it enters a supercritical state. In this state, CO2 is gaseous, with a density close to that of a liquid, a viscosity close to that of a gas, and a diffusion coefficient between that of a gas and a liquid. The ability of CO2 to directly transform from a solid or liquid state to a supercritical state allows for higher power density energy storage, thus reducing the space required for installation. Furthermore, using solid or liquid CO2 at atmospheric pressure during filling improves operational safety. Moreover, using electric heating to transform CO2 from a solid or liquid state to a supercritical state offers advantages over chemical exothermic agents (such as gunpowder) including reusability, precise and controllable heat release, high safety, and a cleaner emission medium.

[0053] In one specific embodiment, the device of this application achieved a high acceleration process with a maximum overload of 20,000g, a 90% maximum overload duration of 0.8ms, and a 30% maximum overload duration of 4ms. The corresponding ultra-high pressure gas generator release pressure is 250MPa.

[0054] In one embodiment, the present invention provides a control method for a controllable transmitting device based on an ultra-high voltage and ultra-high overload controllable transmitting device as described above, comprising:

[0055] S10. Add gas source medium to ultra-high pressure gas generator 1;

[0056] S20. The supplementary pressure-bearing component 24 is pressed against the launcher 3 by the supplementary pressure-bearing component pneumatic controller 22.

[0057] Specifically, in one embodiment, high-pressure gas is pre-charged into the pneumatic cylinder 220 of the supplementary pressure bearing pneumatic controller 22, pushing the first piston 221 to push the supplementary pressure bearing 24 to fit against the contact surface of the launcher 3; at the same time, the second piston 225 is pushed to move, compressing the gas in the accumulator 224 to store energy.

[0058] Specifically, when the supplementary pressure-bearing component 24 is a limiting rod, the limiting rod is pushed until it fits against the surface of the cone section 32 of the launcher 3.

[0059] When the supplementary pressure-bearing component 24 is a limit pin, push the limit pin into the pin hole 30 of the launcher 3.

[0060] S30. Increase the pressure of the ultra-high pressure gas generator 1 to a level greater than the upper limit of the shear ring 21's ultimate pressure and less than the sum of the ultimate pressures of the shear ring 21 and the limit rod.

[0061] S40, The supplementary pressure-bearing component 24 is controlled to leave the launcher 3 by the supplementary pressure-bearing component pneumatic controller 22.

[0062] Specifically, in one embodiment, when the control valve 223 is opened, the compressed gas in the accumulator 224 pushes the second piston 225 to move in the opposite direction, thereby pushing the first piston 221 to retract, and the pressure-bearing member 24 quickly leaves the launcher 3.

[0063] S50, the gas from the ultra-high pressure gas generator 1 is released rapidly, breaking the shear ring 21 and thus pushing the launcher 3 to accelerate within the launch tube 4.

[0064] In the above control method, high-pressure gas is pre-charged into the pneumatic section 226 of the pneumatic cylinder 220, pushing the first piston 221 to push the supplementary pressure bearing member 24 to contact the launcher 3 and hold it in place; at the same time, the second piston 225 is pushed to move and compress the air in the accumulator; the pressure of the ultra-high pressure gas generator 1 is increased to a level greater than the upper limit of the shear ring 21's ultimate pressure bearing capacity but less than the sum of the ultimate pressure bearing caps of the shear ring 21 and the supplementary pressure bearing member 24; at this time, the supplementary pressure bearing member 24 holds the launcher 3 in place, and the launcher 3 will not be launched. When launch is required, the control valve 223 is opened, the compressed gas in the accumulator 224 pushes the second piston 225 to move in the opposite direction, thereby pushing the first piston 221 to retract, the supplementary pressure bearing member 24 quickly leaves the launcher 3, the gas in the ultra-high pressure gas generator 1 is quickly released, breaking the shear ring 21 and thus propelling the launcher 3 to accelerate. The aforementioned control method is simple to operate and can precisely control the launch time of the launcher 3 within the range of several milliseconds to tens of milliseconds. It can be applied to experimental conditions with ultra-high accelerations up to 20,000g and ultra-high pressures up to 250 MPa. Furthermore, when the additional pressure-bearing component 24 is a limit rod, adaptive adjustment can be achieved.

Claims

1. A controllable transmitting device for ultra-high voltage and ultra-high overload, characterized in that, It includes an ultra-high pressure gas generator, a controlled pressure relief device, a launcher, and a launch tube, wherein the controlled pressure relief device includes: A shear ring is fixed between the ultra-high pressure gas generator and the emitter; A supplementary pressure-bearing component is installed on the launch tube. One end of the supplementary pressure-bearing component is movable to abut against or move away from the launch body. The ultimate pressure of the supplementary pressure-bearing component is greater than the pressure difference between the upper limit and the lower limit of the ultimate pressure of the shear ring. The supplementary pressure-bearing component and the shear ring work together to restrict the movement of the launch body before the launch body is launched. A supplementary pressure-bearing component pneumatic controller, connected to the supplementary pressure-bearing component, is used to control the supplementary pressure-bearing component to press against or move away from the launcher; During launch, the pressure of the ultra-high pressure gas generator is increased to a level greater than the upper limit of the shear ring's ultimate pressure bearing capacity, but less than the sum of the lower limit of the shear ring's ultimate pressure bearing capacity and the ultimate pressure bearing capacity of the supplementary pressure bearing component. When the supplementary pressure bearing component presses against the launcher, the combined force of the shear ring and the supplementary pressure bearing component acts on the launcher. The ultra-high pressure gas generator cannot break the shear ring to launch the launcher. Only when the supplementary pressure bearing component leaves the launcher does the gas in the ultra-high pressure gas generator rapidly release, breaking the shear ring and propelling the launcher to accelerate within the launch tube. The launch time of the launcher is within a few milliseconds to tens of milliseconds.

2. The ultra-high voltage and ultra-high overload controllable transmitting device according to claim 1, characterized in that, The launcher includes a cylindrical section and a conical section. The supplementary pressure-bearing component is a limiting rod. The end face of the limiting rod that abuts against the launcher is located in the conical section of the launcher, and the two end faces are in contact with each other when the limiting rod abuts against the launcher. The pneumatic controller of the supplementary pressure-bearing component is connected to the limiting rod and is used to control the limiting rod to abut against or move away from the launcher.

3. The ultra-high voltage and ultra-high overload controllable transmitting device according to claim 1, characterized in that, The supplementary pressure-bearing component is a limiting pin, and the launcher has a corresponding pin hole. The pneumatic controller of the supplementary pressure-bearing component is connected to the limiting pin and is used to control the limiting pin to insert into or leave the pin hole, so as to realize the connection and disconnection between the supplementary pressure-bearing component and the launcher.

4. The ultra-high voltage and ultra-high overload controllable transmitting device according to claim 2 or 3, characterized in that, The supplementary pressure-bearing component pneumatic controller includes: a pneumatic cylinder, a first piston inside the pneumatic cylinder, the bottom of the first piston being connected to the supplementary pressure-bearing component, a pressure relief pipe connected to the upper wall of the pneumatic cylinder of the first piston, a control valve being provided on the pressure relief pipe, and an accumulator connected to the lower wall of the pneumatic cylinder of the first piston, a second piston being provided inside the accumulator; During operation, high-pressure gas is pre-charged to the upper part of the first piston of the pneumatic cylinder, pushing the first piston to push the supplementary pressure bearing component to fit against the launcher. At the same time, the second piston is pushed to move and compress the air in the accumulator. The pressure of the ultra-high pressure gas generator is increased to a level greater than the upper limit of the shear ring's ultimate pressure but less than the sum of the ultimate pressures of the shear ring and the supplementary pressure bearing component. The control valve is opened, and the compressed gas in the accumulator pushes the second piston to move in the opposite direction, thereby pushing the first piston back and quickly cutting off the connection between the supplementary pressure bearing component and the launcher. The gas in the ultra-high pressure gas generator is released rapidly, destroying the shear ring and thus propelling the launcher to accelerate.

5. The ultra-high voltage and ultra-high overload controllable transmitting device according to claim 4, characterized in that, The pneumatic cylinder includes a pneumatic section and a hydraulic section. The space above the first piston is the pneumatic section, and the space below the first piston is the hydraulic section. The accumulator is divided into a hydraulic chamber and a pneumatic accumulator chamber by a second piston. The hydraulic chamber is connected to the hydraulic section.

6. The ultra-high voltage and ultra-high overload controllable transmitting device according to claim 1, characterized in that, The ultimate bearing pressure of the supplementary pressure-bearing component is greater than twice the pressure difference between the upper limit and the lower limit of the ultimate bearing pressure of the shear ring.

7. The ultra-high voltage and ultra-high overload controllable transmitting device according to claim 1, characterized in that, The ultra-high pressure gas generator is equipped with a heating tube for heating the gas source inside the ultra-high pressure gas generator, and an injection tube is provided at the end of the ultra-high pressure gas generator for adding the gas source medium.

8. The ultra-high voltage and ultra-high overload controllable transmitting device according to claim 7, characterized in that, The gas source medium is solid CO2 or liquid CO2, and the heating tube is an electric heating tube. Solid CO2 or liquid CO2 is converted into supercritical CO2 by constant volume increase in temperature and pressure through electric heating.

9. A control method for an ultra-high voltage and ultra-high overload controllable transmitting device according to any one of claims 4-5, characterized in that, include: Add gas source medium to the ultra-high pressure gas generator; The supplementary pressure-bearing component is pressed against the launcher by controlling the pneumatic controller of the supplementary pressure-bearing component. The pressure of the ultra-high pressure gas generator is increased to a level greater than the upper limit of the shear ring's ultimate bearing pressure but less than the sum of the ultimate bearing pressures of the shear ring and the supplementary pressure-bearing components. The supplementary pressure-bearing component is controlled to leave the launcher by a pneumatic controller for the supplementary pressure-bearing component. The gas from the ultra-high pressure gas generator is released rapidly, breaking the shear ring and thus propelling the launcher to accelerate inside the launch tube.

10. The control method according to claim 9, characterized in that, include: The pneumatic cylinder is pre-charged with high-pressure gas, which pushes the first piston to push the supplementary pressure bearing component into contact with the launcher surface; at the same time, the second piston is pushed to move until the pressure at both ends of the second piston of the accumulator is balanced. Increase the pressure of the ultra-high pressure gas generator to a level greater than the upper limit of the shear ring's ultimate bearing pressure but less than the sum of the ultimate bearing pressures of the shear ring and the limiting rod; When the control valve is opened, the compressed gas in the accumulator pushes the second piston to move in the opposite direction, thereby pushing the first piston back. The pressure-bearing component quickly leaves the launcher, and the gas from the ultra-high pressure gas generator is released rapidly, breaking the shear ring and thus pushing the launcher to undergo ultra-high overload acceleration within the launch tube.

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