CN113607010A - High-speed penetration test device and method for deep sea environment - Google Patents
High-speed penetration test device and method for deep sea environment Download PDFInfo
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- CN113607010A CN113607010A CN202110884763.7A CN202110884763A CN113607010A CN 113607010 A CN113607010 A CN 113607010A CN 202110884763 A CN202110884763 A CN 202110884763A CN 113607010 A CN113607010 A CN 113607010A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B35/00—Testing or checking of ammunition
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Abstract
The invention discloses a high-speed penetration test device and method for a deep sea environment. Meanwhile, a first brittle static pressure-resistant film and a first automatic valve are arranged in front of and behind the front end of the flight area, when the projectile body passes through the first automatic valve and breaks down or is about to break down the first brittle static pressure-resistant film, the first automatic valve can be quickly closed, so that the space of the flight area on the front side and the space of the rear side of the first automatic valve are sealed and separated, and the sealing performance of the penetration area and the stability of ultrahigh water pressure in the penetration area can be well guaranteed. Finally, the damage process of the target under the coupling action of ultrahigh water pressure and ultrahigh speed penetration in the deep sea environment can be well simulated, so that the corresponding damage mechanism can be researched.
Description
Technical Field
The invention relates to the technical field of deep sea high-speed penetration tests, in particular to a deep sea environment high-speed penetration test device and method.
Background
With the continuous development of the international situation and the regional situation, the ocean rights and interests and the ocean safety in China are continuously challenged. Due to the development and promotion of world military science and technology, underwater high-speed weapons are also rapidly developed, and the high-speed penetration gradually becomes an important threat to equipment such as submarines, ships and the like and underwater facilities. Under the condition, the research on high-speed and ultra-high-speed penetration and action mechanism in deep sea environment is of great importance to the improvement of the safety of relevant underwater facilities and equipment in China, and is also of great benefit to the development of underwater ultra-high-speed weapons in China.
At present, the research on the related technology of non-explosive loading of underwater impact is mature, and a large number of related devices appear at home and abroad. However, these devices can only simulate the mechanical properties under the action of additional shock waves in deep sea water and under the working conditions of gas preparation, back water and the like, and cannot realize penetration of the direct contact collision simulation. In addition, some devices and related test methods related to high-speed projectile body water penetration simulation tests are available at home and abroad, but basically the high-speed projectile body water penetration simulation test device aims at the working conditions of high-speed projectile body water penetration into a water tank and the like under the conventional atmospheric pressure, and the high water pressure under the deep sea environment cannot be effectively considered. Therefore, the existing related technology is difficult to meet the damage mechanism research of underwater targets under the coupling action of ultrahigh water pressure and ultrahigh speed penetration in deep sea environment.
Disclosure of Invention
The invention mainly aims to provide a high-speed penetration test device and method for a deep sea environment, and aims to simulate the damage process of a target under the ultrahigh water pressure and ultrahigh-speed penetration coupling action in the deep sea environment.
In order to achieve the above object, the present invention provides a high-speed penetration test device for deep sea environment, comprising:
the simulation cabin is internally limited with a test space, the test space comprises a closable penetration area for placing a target body and a flight area, the front end of the flight area is communicated with the penetration area, and a first brittle static pressure resistant film is arranged at the front end of the flight area to hermetically separate the penetration area and the flight area;
the hydraulic press is used for injecting water into the penetration area and pressurizing the penetration area so as to simulate the deep sea environment with ultrahigh water pressure;
the accelerator is communicated with the rear end of the flying area and used for driving the projectile to fly to the target body along the test space at an ultrahigh speed;
the first automatic valve is arranged at the position of the flying area, which is positioned at the rear side of the first brittle static pressure-resistant film, and when the elastomer passes through the first automatic valve and breaks down or is about to break down the first brittle static pressure-resistant film, the first automatic valve is quickly closed so as to seal and separate the space of the flying area, which is positioned at the front side and the rear side of the first automatic valve;
the speed measuring device is used for measuring penetration speed when the projectile body is about to impact a target body;
the high-speed camera is used for recording and reconstructing the penetration and damage process of the target body; and
and the stress-strain sensor is arranged on the target body and used for recording the stress and strain change conditions of the target body.
In order to achieve the purpose, the invention also provides a high-speed penetration test method for the deep sea environment, which comprises the following steps:
s1, according to the test requirements, filling water into the penetration area through a hydraulic press and pressurizing to the required ultrahigh water pressure;
s2, under the condition that space from the projectile body to the target body is feasible, the projectile body is driven to fly along the test space through the accelerator, the first brittle static pressure-resistant film is punctured at a high speed and then impacts the target body, the process that the target body is subjected to penetration and damage is recorded and reconstructed through the high-speed camera, the penetration speed of the projectile body is measured through the speed measuring device, and the stress and strain change conditions of the target body are recorded through the stress strain sensor.
The invention relates to a high-speed penetration test device and method for deep sea environment, wherein a test space comprising a penetration area and a flight area is limited in a simulation cabin, and a hydraulic press capable of injecting water and pressurizing the penetration area is arranged, so that the deep sea environment with ultrahigh water pressure is simulated in the penetration area. Meanwhile, a first brittle static pressure-resistant film and a first automatic valve are arranged in front of and behind the front end of the flight area, when the projectile body passes through the first automatic valve and breaks down or is about to break down the first brittle static pressure-resistant film, the first automatic valve can be quickly closed, so that the space of the flight area on the front side and the space of the rear side of the first automatic valve are sealed and separated, and the sealing performance of the penetration area and the stability of ultrahigh water pressure in the penetration area can be well guaranteed. Finally, the damage process of the target under the coupling action of ultrahigh water pressure and ultrahigh speed penetration in the deep sea environment can be well simulated, so that the corresponding damage mechanism can be researched.
Drawings
FIG. 1 is a longitudinal cross-sectional view of the present invention;
FIG. 2 is a schematic view of the assembly of the chamber, the high speed camera, the target, and the first automatic valve;
FIG. 3 is a schematic view of the connection of a stress-strain sensor to a target body.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that if directional indications (such as … …, which is up, down, left, right, front, back, top, bottom, inner, outer, vertical, transverse, longitudinal, counterclockwise, clockwise, circumferential, radial, axial) are provided in the embodiments of the present invention, the directional indications are only used for explaining the relative position relationship, motion condition, etc. of the components at a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first" or "second", etc. in the embodiments of the present invention, the description of "first" or "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a high-speed penetration test device for a deep sea environment.
In the embodiment of the invention, as shown in fig. 1 to 3, the high-speed penetration test device for the deep sea environment comprises a simulation cabin 1, an accelerator 2, a first automatic valve 3, a hydraulic press 4, a speed measuring device 5, a high-speed camera 6 and a stress strain sensor 7.
Wherein, the inside of the simulation cabin 1 is limited with a test space, the test space comprises a closable penetration area 110 for placing the target body 200 and a flight area 120 with the front end communicated with the penetration area 110, and the front end of the flight area 120 is provided with a first brittle static pressure resistant film 13 to hermetically separate the penetration area 110 and the flight area 120. The hydraulic press 4 is used to flood and pressurize the penetration zone 110 to simulate an ultra-high water pressure deep sea environment. The accelerator 2 is connected to the rear end of the flight area 120, and is configured to drive the projectile 100 to fly toward the target 200 at an ultra-high speed along the test space, so that the projectile 100 finally impacts the target 200. The first automatic valve 3 is arranged at the position of the flying area 120 behind the first brittle static pressure resistant film 13 (here, the direction of the first brittle static pressure resistant film 13 facing the target body 200 is the front, and vice versa), when the projectile body 100 passes through the first automatic valve 3 and breaks down or is about to break down the first brittle static pressure resistant film 13, the first automatic valve 3 is quickly closed, so that the spaces of the flying area 120 at the front side and the rear side of the first automatic valve 3 are sealed and separated, and the sealing performance of the flying area 110 and the stability of ultrahigh water pressure in the flying area can be well ensured. Finally, the damage process of the target under the coupling action of ultrahigh water pressure and ultrahigh speed penetration in the deep sea environment can be well simulated. The speed measuring device 5 is used for measuring penetration speed when the projectile body 100 is about to impact the target body 200, the high-speed camera 6 is used for recording and reconstructing penetration and damage processes of the target body 200, and the stress-strain sensor 7 is arranged on the target body 200 and used for recording stress and strain change conditions of the target body 200 so as to research corresponding damage mechanisms.
It should be noted that the ultra high speed and the ultra high water pressure belong to technical terms well known to those skilled in the art in a deep sea environment impact test, the ultra high speed is generally 1-6 km/s, and the ultra high water pressure can be generally up to 30 MPa. Projectile 100 is made of a metallic material and generally includes a projectile (not shown) and a sabot (not shown), with the projectile having a smaller diameter than the sabot.
Specifically, the penetration speed measured by the speed measuring device 5, the penetration and damage processes of the target body 200 recorded and reconstructed by the high-speed camera 6, and the stress and strain change conditions of the target body 200 recorded by the stress and strain sensor 7 can be obtained by the data obtaining device after the test is finished; in the test process, the data acquisition device 300 (such as a computer) is connected with the speed measuring device 5, the high-speed camera 6 and the stress-strain sensor 7 through a data line or a wireless communication module (such as a WIFI communication module, a GPRS communication module or a bluetooth communication module) and performs real-time acquisition and data analysis, and corresponding sealing treatment is preferably performed at an entrance if the entrance needs to enter a space needing to ensure sealing performance, such as the penetration area 110, by the data line transmission acquisition mode, so that the test precision is prevented from being influenced by water leakage or air leakage at the entrance.
In the embodiment of the present invention, the speed measuring device 5 has various embodiments. In a preferred embodiment, the speed measuring device 5 is an electromagnetic induction speed measuring device disposed in the penetration area 110 in front of the target body 200, after the electromagnetic induction speed measuring device is powered on, two speed measuring induction coils (not shown) of the electromagnetic induction speed measuring device generate corresponding magnetic fields in the area where the projectile body 100 passes through, when the projectile body 100 passes through the magnetic fields, the magnetic fields are fluctuated, and the penetration speed of the projectile body 100 is calculated by using the distance between the two speed measuring induction coils and the time interval of the fluctuation. It is understood that the electromagnetic induction speed measuring device is well known in the art, and the detailed structure and operation principle thereof are not described herein.
In another embodiment, the speed measuring device 5 is an ultra-high speed camera (not shown) disposed in the penetration area 110 at a position in front of the target body 200, and the ultra-high speed camera can record the movement track of the projectile body 100 approaching the target body 200, so as to calculate and analyze the penetration speed of the projectile body 100 according to the movement track images continuously recorded by the ultra-high speed camera.
In the embodiment of the present invention, the accelerator 2 may have various embodiments, for example, an embodiment of the transmitter part disclosed in the invention patent application with the publication number "CN 110389010 a" may be adopted, and the following embodiments may also be adopted:
in a preferred embodiment, as shown in fig. 1, the accelerator 2 adopts the principle of mixing and accelerating solid powder and high-pressure light gas (such as hydrogen gas or helium gas) and comprises a light gas gun tube 21 communicated with the rear end of the flight area 120, a pump tube 22 communicated with the front end of the light gas gun tube 21, a quick-acting valve 23 communicated with the rear end of the pump tube 22, and a loading chamber 24 communicated with the rear end of the quick-acting valve 23, wherein the projectile body 100 is arranged in the light gas gun tube 21, the pump tube 22 is provided with a pressurizing piston 25 at a position close to the quick-acting valve 23, the area of the pump tube 22 between the pressurizing piston 25 and the projectile body 100 is filled with high-pressure light gas (not shown), and the loading chamber 24 is filled with solid explosive (not shown). After the solid explosive in the loading chamber 24 is ignited, the high-temperature and high-pressure gas instantaneously formed by the solid explosive drives the pressurizing piston 25 in the pump pipe 22 to compress the light gas in the pump pipe 22, so that the pressure of the light gas in the pump pipe 22 is increased sharply and the projectile body 100 is driven to move in an accelerated manner until the projectile body 100 leaves the light gas gun barrel 21 and enters the test space at an ultrahigh speed.
Specifically, the light gas gun barrel 21 may be made of a high-strength material (e.g., a high-strength resin, a high-strength glass fiber, or a high-strength glass fiber reinforced plastic).
In the embodiment of the present invention, the number and the arrangement of the high-speed cameras 6 may be implemented in various ways, wherein the number may be one or more. The high-speed camera 6 may be disposed outside the simulation cabin 1 at a position corresponding to the target body 200, or may be disposed in the penetration region 110, and when disposed outside the simulation cabin 1, the simulation cabin 1 is made of a high-strength transparent material (for example, high-strength resin, high-strength fiberglass, or high-strength fiberglass) at least in a region corresponding to the penetration region 110. Illustratively, as shown in fig. 1 and 2, three high-speed cameras 6 are provided inside the simulation cabin 1 at positions above, below and in front of the target 200, and the high-speed cameras 6 are preferably ultrahigh-speed underwater cameras.
In the embodiment of the present invention, as shown in fig. 1, the simulation cabin 1 may be an integrally formed structure, or may be an assembled structure, preferably an assembled structure. Illustratively, the simulation cabin 1 comprises a cylinder 11 with an opening at the rear end and a pipe body 12 inserted at the opening of the simulation cabin 1 at the front part, the joint of the cylinder 11 and the pipe body 12 is processed closely (for example, a sealing ring is arranged for sealing), the flying area 120 is defined inside the pipe body 12, and the penetration area 110 is defined inside the cylinder 11. Specifically, to ensure hermeticity and ease assembly, the forward end of the tube body 12 extends into the penetration zone 110, preferably to a position proximate the target body 200.
Preferably, the flying area 120 is divided into two sections connected in front and back, a second brittle static pressure resistant film 14 and a second automatic valve 8 are arranged in front and back of the transition between the front section and the back section, the front section is sealed by the second brittle static pressure resistant film 14 and the first brittle static pressure resistant film 13 to form a pressure stabilizing section 121, and a pressurizing system 9 is connected with the pressure stabilizing section 121 directly or through an air pipe 91 and is used for inputting and pressurizing gas into the pressure stabilizing section 121 so as to balance the gas pressure in the pressure stabilizing section 121 with the water pressure of the penetration area 110. When the elastomer 100 does not fly to the first brittle static pressure resistant film 14, the first automatic valve 3 and the second automatic valve 8 are in an open state; when the projectile body 100 passes through the second automatic valve 8 and breaks down or is about to break down the second brittle static pressure resistant film 14, the second automatic valve 8 is quickly and automatically closed to prevent the gas of the pressure stabilizing partition 121 from leaking outwards, if the gas leaks outwards in the pressure stabilizing partition 121 before the second automatic valve 8 is completely closed, the pressurization system 9 can automatically pressurize the pressure stabilizing partition 121 to ensure that the air pressure in the pressure stabilizing partition 121 is balanced with the water pressure in the penetration partition 110; similarly, when the projectile body 100 passes through the first automatic valve 3 and breaks down or is about to break down the first brittle static pressure resistant film 13, the first automatic valve 3 is automatically closed quickly to prevent the water in the penetration area 110 from entering the pressure stabilizing subarea 121, so that the water pressure in the penetration area 110 is stable, and the test precision is ensured.
Specifically, the third automatic valve 92 is disposed at the air pipe 91 or at the joint of the air pipe 91 and the pipe body, so as to control the on-off of the air passage between the air pipe 91 and the pressure-stabilizing section 121.
Specifically, the hydraulic press 4 is communicated with the penetration area 110 through a water pipe 41, and if necessary, the water pipe 41 or a joint of the water pipe 41 and the cylinder 11 is provided with a fourth automatic valve 42 to control the on-off of the water path of the water pipe 41 and the penetration area 110.
It can be understood that the pressurization system 9 can detect the air pressure in the pressure-stabilizing section 121 according to the pressure gauge provided therein or the pressure gauge provided in the pressure-stabilizing section 121, and determine whether to pressurize the pressure-stabilizing section 121 or not according to the pressure information fed back by the pressure gauge, so as to ensure that the air pressure in the pressure-stabilizing section 121 is substantially consistent with the water pressure in the penetration section 110.
It can be understood that how the first automatic valve 3 and the second automatic valve 8 determine that the elastomer 100 breaks or is about to break through the second brittle static pressure resistant film 14 and the first brittle static pressure resistant film 13 can be detected by arranging sensors, for example, arranging photoelectric sensors (not shown) at positions corresponding to the second brittle static pressure resistant film 14 and the first brittle static pressure resistant film 13, respectively, for sensing whether the elastomer 100 breaks or is about to break through the first brittle static pressure resistant film 13 and the second brittle static pressure resistant film 14, and the control system of the testing apparatus can make an instruction whether to actuate the corresponding first automatic valve 3 or the corresponding second automatic valve 8 to be rapidly closed according to sensing signals fed back by the photoelectric sensors. The first automatic valve 3 and the second automatic valve 8 both adopt the prior art and can adopt the same embodiment, and the detailed structure and the working principle thereof are not described herein.
Specifically, the first brittle hydrostatic-pressure-resistant film 13 and the second brittle hydrostatic-pressure-resistant film 14 are thin sheets made of relatively brittle materials such as glass or iron sheets, which can ensure structural integrity and sealing performance when the projectile 100 is not impacted, but can be broken instantly when the projectile 100 is impacted by the ultra-high-speed flying projectile 100, so that the projectile 100 can be broken down with very little loss of kinetic energy. The first brittle static pressure-resistant film 13 and the second brittle static pressure-resistant film 14 may be respectively fixed (e.g., adhesively fixed) to the front ports of the first automatic valve 3 and the second fixed valve, or may be respectively fixed (e.g., adhesively fixed) to the inner wall of the flight area 120, and it can be understood that the thicknesses of the first brittle static pressure-resistant film 13 and the second brittle static pressure-resistant film 14 are determined according to the test requirements (e.g., the water pressure and the air pressure) to ensure that the integrity and the sealing performance of the structure can be ensured when the projectile 100 does not collide therewith, and the projectile 100 can be punctured with very little kinetic energy loss.
Further, at least one spoiler 15 is axially arranged in the rear partition at intervals, the spoiler 15 is provided with a ballistic hole 151 for the projectile body 100 to pass through, so that the rear partition forms a spoiler partition 122, and the wake flow carried by the projectile body 100 in the ultra-high-speed flight is cut off step by step through the spoiler 15, so that the adverse effect of the wake flow on the flight stability of the projectile body 100 is relieved as much as possible, the attitude stability of the projectile body 100 in the flight process is ensured, and the test precision is improved.
Preferably, the aperture of the ballistic hole 151 is slightly larger than the diameter of the projectile 100, but smaller than the size of the sabot of the projectile 100, and during the passage of the projectile 100 through the ballistic hole, the sabot is blocked by the spoiler 15 and separated from the projectile, so as to achieve mechanical sabot removal and reduce the subsequent flight resistance of the projectile 100 (here, the sabot-removed projectile 100).
It should be noted that the pipe body 12 may be an integral structure, or may be a multi-segment structure, such as the front segment and the rear segment being two segments that are independent and assembled together.
Specifically, as shown in fig. 1, a bracket 201 is fixedly arranged in the penetration area 110, the target body 200 is fixedly arranged on the bracket 201, and the stress-strain sensor 7 is fixedly arranged on one side of the surface of the target body 200 away from the accelerator 2. Of course, the target body 200 may be suspended in water without being fixed.
Preferably, a side wall (preferably a front side wall) of the barrel 11 may be formed with an operation passing hole (not shown), and a protection plate (not shown) capable of sealing and closing the operation passing hole may be detachably fixed at the operation passing hole. So that the target body 200, the high-speed camera 6, and the like are mounted and removed before and after the test.
Illustratively, the target body 200 can be in various forms such as a plate shape, a body shape, a hollow sphere and the like, and enough stress strain sensors 7 are pre-arranged on the target body to simulate the damage process of targets with different shapes in a deep sea environment under the coupling action of ultrahigh water pressure and ultrahigh speed penetration according to the test requirements.
After the embodiments of the deep sea environment high speed penetration test apparatus according to the present invention are described, the embodiments of the deep sea environment high speed penetration test method according to the present invention will be described next. The specific structure of the high-speed penetration test device in the deep sea environment is as described in the above embodiments, and the repeated parts are not described in detail.
In the embodiment of the present invention, as shown in fig. 1 to 3, the deep sea environment high speed penetration test method includes the following steps:
in order to achieve the purpose, the invention also provides a high-speed penetration test method for the deep sea environment, which comprises the following steps:
s1, according to the test requirements, filling water into the penetration area 110 through the hydraulic press 4 and pressurizing to the required ultrahigh water pressure;
specifically, the specific value of the ultra-high water pressure depends on the test requirement, and generally speaking, the hydraulic press 4 can simulate a deep sea environment with a water depth of 3000m and a water pressure of 30MPa in the penetration area 110.
It can be understood that after the testing device, the projectile body 100, the target body 200 and the like are installed, the tightness of the penetration area 110 and the pressure-stabilizing partition area 121 needs to be detected, so as to avoid the influence of air leakage and water leakage on the subsequent test results.
S2, under the condition that the space from the projectile body 100 to the target body 200 is feasible, the projectile body 100 is driven to fly along the test space through the accelerator 2, the first brittle hydrostatic-resistant film 13 is punctured at a high speed and then impacts the target body 200, the process that the target body 200 is punctured and damaged is recorded and reconstructed through the high-speed camera 6, the puncturing speed of the projectile body 100 is measured through the speed measuring device 5, and the stress and strain change conditions of the target body 200 are recorded through the stress-strain sensor, so that the corresponding damage mechanism can be researched according to the data obtained by the test.
Specifically, the penetration speed measured by the speed measuring device 5, the penetration and damage processes of the target body 200 recorded and reconstructed by the high-speed camera 6, and the stress and strain change conditions of the target body 200 recorded by the stress and strain sensor 7 can be obtained by the data obtaining device after the test is finished; in the test process, a data acquisition device (such as a computer) is connected with the speed measuring device 5, the high-speed camera 6 and the stress-strain sensor 7 through a data line or a wireless communication module (such as a WIFI communication module, a GPRS communication module or a Bluetooth communication module) and performs real-time acquisition and data analysis, and corresponding sealing treatment is preferably performed at an entrance if the entrance needs to enter a space needing tightness, such as the penetration area 110, and the like through the data line transmission acquisition mode, so that the test precision is prevented from being influenced due to water leakage or air leakage at the entrance.
Specifically, projectile 100 is made of a metal material and generally includes a projectile and a sabot, with the projectile having a smaller diameter than the sabot.
It should be noted that the ultra high speed and the ultra high water pressure belong to technical terms well known to those skilled in the art in the impact test in the deep sea environment, and the ultra high speed is generally 1-6 km/s.
In the embodiment of the present invention, as shown in fig. 1, the simulation cabin 1 may be an integrally formed structure, or may be an assembled structure, preferably an assembled structure. Illustratively, the simulation cabin 1 comprises a cylinder 11 with an opening at the rear end and a pipe body 12 inserted at the opening of the simulation cabin 1 at the front part, the joint of the cylinder 11 and the pipe body 12 is processed closely (for example, a sealing ring is arranged for sealing), the flying area 120 is defined inside the pipe body 12, and the penetration area 110 is defined inside the cylinder 11. Specifically, to ensure hermeticity and ease assembly, the forward end of the tube body 12 extends into the penetration zone 110, preferably to a position proximate the target body 200.
Preferably, the flying area 120 is divided into two sections connected in front and back, a second brittle static pressure resistant film 14 and a second automatic valve 8 are arranged in front and back of the transition between the front section and the back section, the front section is sealed by the second brittle static pressure resistant film 14 and the first brittle static pressure resistant film 13 to form a pressure stabilizing section 121, and a pressurizing system 9 is connected with the pressure stabilizing section 121 directly or through an air pipe 91 and is used for inputting and pressurizing gas into the pressure stabilizing section 121 so as to balance the gas pressure in the pressure stabilizing section 121 with the water pressure of the penetration area 110. When the elastomer 100 does not fly to the first brittle static pressure resistant film 14, the first automatic valve 3 and the second automatic valve 8 are in an open state; when the projectile body 100 passes through the second automatic valve 8 and breaks down or is about to break down the second brittle static pressure resistant film 14, the second automatic valve 8 is quickly and automatically closed to prevent the gas of the pressure stabilizing partition 121 from leaking outwards, if the gas leaks outwards in the pressure stabilizing partition 121 before the second automatic valve 8 is completely closed, the pressurization system 9 can automatically pressurize the pressure stabilizing partition 121 to ensure that the air pressure in the pressure stabilizing partition 121 is balanced with the water pressure in the penetration partition 110; similarly, when the projectile body 100 passes through the first automatic valve 3 and breaks down or is about to break down the first brittle static pressure resistant film 13, the first automatic valve 3 is automatically closed quickly to prevent the water in the penetration area 110 from entering the pressure stabilizing subarea 121, so that the water pressure in the penetration area 110 is stable, and the test precision is ensured.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A high-speed penetration test device for a deep sea environment is characterized by comprising:
the simulation cabin is internally limited with a test space, the test space comprises a closable penetration area for placing a target body and a flight area, the front end of the flight area is communicated with the penetration area, and a first brittle static pressure resistant film is arranged at the front end of the flight area to hermetically separate the penetration area and the flight area;
the hydraulic press is used for injecting water into the penetration area and pressurizing the penetration area so as to simulate the deep sea environment with ultrahigh water pressure;
the accelerator is communicated with the rear end of the flying area and used for driving the projectile to fly to the target body along the test space at an ultrahigh speed;
the first automatic valve is arranged at the position of the flying area, which is positioned at the rear side of the first brittle static pressure-resistant film, and when the elastomer passes through the first automatic valve and breaks down or is about to break down the first brittle static pressure-resistant film, the first automatic valve is quickly closed so as to seal and separate the space of the flying area, which is positioned at the front side and the rear side of the first automatic valve;
the speed measuring device is used for measuring penetration speed when the projectile body is about to impact a target body;
the high-speed camera is used for recording and reconstructing the penetration and damage process of the target body; and
and the stress-strain sensor is arranged on the target body and used for recording the stress and strain change conditions of the target body.
2. The high-speed penetration test device for the deep sea environment as claimed in claim 1, wherein: the speed measuring device is an electromagnetic induction speed measuring device arranged in the penetration area and located in front of the target body, or an ultra-high speed camera arranged in the penetration area and located in front of the target body, the ultra-high speed camera records the movement track of the projectile body approaching the target body, and the penetration speed of the projectile body is calculated and analyzed according to the movement track images continuously recorded by the ultra-high speed camera.
3. The high-speed penetration test device for the deep sea environment as claimed in claim 1, wherein: the accelerator comprises a light gas gun barrel communicated with the rear end of the flight area, a pump pipe communicated with the front end of the light gas gun barrel, a quick-acting valve communicated with the rear end of the pump pipe, and a loading chamber communicated with the rear end of the quick-acting valve, the projectile body is arranged in the light gas gun barrel, a pressurizing piston is arranged at the position, close to the quick-acting valve, of the pump pipe, high-pressure light gas is filled in the area, located between the pressurizing piston and the projectile body, of the pump pipe, and solid explosives can be arranged in the loading chamber.
4. The high-speed penetration test device for the deep sea environment as claimed in claim 1, wherein: the number of the high-speed cameras is one or more, the high-speed cameras are arranged at positions, corresponding to the target bodies, outside the simulation cabin or in the penetration areas, and when the high-speed cameras are arranged outside the simulation cabin, at least areas, corresponding to the penetration areas, of the simulation cabin are made of high-strength transparent materials.
5. The high-speed penetration test device for the deep sea environment as claimed in claim 1, wherein: the simulation cabin comprises a cylinder body with an opening at the rear end and a pipe body with the front part inserted into the opening of the simulation cabin, the flight area is defined in the pipe body, and the penetration area is defined in the cylinder body.
6. The high-speed penetration test device for the deep sea environment according to any one of claims 1 to 5, wherein: the flying area is divided into two zones which are connected in front and back, a second brittle static pressure resistant film and a second automatic valve are arranged in front and back of the transition position of the front zone and the back zone, the second brittle static pressure resistant film and the first brittle static pressure resistant film seal the front zone to form a pressure stabilizing zone, a pressurizing system is connected with the pressure stabilizing zone directly or through an air pipe and used for inputting air into the pressure stabilizing zone and pressurizing the pressure stabilizing zone, and when the elastomer does not fly to the first brittle static pressure resistant film, the first automatic valve and the second automatic valve are in an open state; when the projectile body is through second automatic valve and punctures or be about to puncture the resistant static pressure membrane of second fragility, the quick self-closing of second automatic valve, if before second automatic valve closes completely, gaseous hourglass appears in the steady voltage subregion, and the automatic past steady voltage subregion pressure boost of turbocharging system.
7. The high-speed penetration test device for the deep sea environment according to claim 6, wherein: at least one spoiler is axially arranged in the rear partition at intervals, and the spoiler is provided with a missile path hole for the missile body to pass through, so that the rear partition forms a spoiler partition, and the wake flow carried by the missile body during ultrahigh-speed flight is cut off step by step through the spoiler.
8. The high-speed penetration test device for the deep sea environment according to claim 7, wherein: the aperture of the projectile track hole is slightly larger than the diameter of the projectile body, but smaller than the size of the projectile support of the projectile body.
9. A test method using the high-speed penetration test device in the deep sea environment according to any one of claims 1 to 8, which is characterized by comprising the following steps:
s1, according to the test requirements, filling water into the penetration area through a hydraulic press and pressurizing to the required ultrahigh water pressure;
s2, under the condition that space from the projectile body to the target body is feasible, the projectile body is driven to fly along the test space through the accelerator, the first brittle static pressure-resistant film is punctured at a high speed and then impacts the target body, the process that the target body is subjected to penetration and damage is recorded and reconstructed through the high-speed camera, the penetration speed of the projectile body is measured through the speed measuring device, and the stress and strain change conditions of the target body are recorded through the stress strain sensor.
10. The assay of claim 9, wherein: in step S2, before the projectile body impacts the target body, when the projectile body passes through the second automatic valve and breaks down or is about to break down the second brittle static pressure resistant film, the second automatic valve is driven to be quickly and automatically closed; if the second automatic valve is completely closed, the pressure stabilizing subarea has gas leakage, and the pressurization system automatically pressurizes the pressure stabilizing subarea; and driving the first automatic valve to be quickly and automatically closed when the projectile body passes through the first automatic valve and breaks down or is about to break down the first brittle static pressure-resistant film.
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| EP2372295A1 (en) * | 2010-03-30 | 2011-10-05 | Nexter Munitions | Penetrator with stepped profile |
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- 2021-08-03 CN CN202110884763.7A patent/CN113607010B/en active Active
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|---|---|---|---|---|
| EP2372295A1 (en) * | 2010-03-30 | 2011-10-05 | Nexter Munitions | Penetrator with stepped profile |
| CN103344405A (en) * | 2013-07-02 | 2013-10-09 | 哈尔滨工业大学 | Cylindrical non-explosive-type underwater explosive shock wave equivalent load experiment device |
| CN105973078A (en) * | 2016-05-06 | 2016-09-28 | 西安近代化学研究所 | Projectile and projectile support separating device under high-speed impacts of large-mass projectile |
| CN108362584A (en) * | 2018-03-14 | 2018-08-03 | 中国人民解放军61489部队 | The shock tube experiment device of blast off phenomenon Combined Loading in a kind of water |
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