CN114413693B - Gas detonation driving ultra-high-speed emission testing system - Google Patents
Gas detonation driving ultra-high-speed emission testing system Download PDFInfo
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- CN114413693B CN114413693B CN202210079526.8A CN202210079526A CN114413693B CN 114413693 B CN114413693 B CN 114413693B CN 202210079526 A CN202210079526 A CN 202210079526A CN 114413693 B CN114413693 B CN 114413693B
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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 belongs to the technical field of gas detonation experiments, in particular to a gas detonation drive ultra-high-speed emission test system, which comprises an emitter assembly, a target chamber, a gas distribution unit, an ignition unit, a detection unit and a controller, wherein the emitter assembly is connected with the target chamber through a gas inlet; because less data are available, analyzing factors affecting the performance of fragments in the ultra-high speed emission state; therefore, the invention measures the propagation speed and the propagation pressure change of detonation shock waves generated after the gas is ignited through the test port arranged on the pipe wall of the emitter component, and the pressure sensor and the flame sensor are used for matching with the laser sensor to record the emission speed of the emitted part, so that under different test condition parameters, namely the preparation proportion of the oxyhydrogen gas in the ignition gas, the ignition position in the detonation pipe section, the length proportion relation between the emitter component and the target chamber, the installation position of the polyethylene film in the emitter component and other factors, the ultrahigh-speed emission effect of the gas detonation driving test system is verified.
Description
Technical Field
The invention belongs to the technical field of gas detonation testing, and particularly relates to a gas detonation driving ultrahigh-speed emission testing system.
Background
The ballistic target is test equipment for launching test pellets to a preset speed, measuring aerodynamic parameters in the flight process of the pellets and verifying the impact and damage performance of the pellets on a target plate, such as simulation space debris protection, has the mass of gram-level space debris with the average speed of 10km/s, has extremely strong damage capability on an on-orbit spacecraft, and mainly resists the structural design of the spacecraft, and needs to carry out test simulation for researching and designing corresponding protection technology.
Based on the research of the related theory, zhao Feng, the test and comment research [ D ] of the explosive high-detonation driving high-speed metal flyer, experiments and theory prove that the explosive high-detonation driving high-speed metal flyer is feasible, but common gunpowder fuel gas for detonation has large molecular mass and low sound velocity, the detonation driving speed capable of being generated is limited, toxic products of gunpowder also pollute a test device, and therefore, flammable gas is adopted for detonation driving to replace gunpowder as driving energy, but less data are used for analyzing factors influencing the performance of fragments in an ultra-high-speed emission state.
In view of the above, in order to verify the ultra-high-speed emission effect of the gas detonation drive test system under different test condition parameters, the invention provides a gas detonation drive ultra-high-speed emission test system.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a gas detonation drive ultra-high-speed emission test system; the technical problems that the combustible gas is adopted to perform detonation driving to replace gunpowder to serve as driving energy, but less data are available to analyze factors influencing the performance of fragments in a superhigh speed emission state are solved.
In order to achieve the above purpose, the present invention is realized by the following technical scheme:
the invention relates to a gas detonation drive ultra-high-speed emission test system, which comprises:
the emitter assembly comprises a plurality of sections of circular tubes which are detachably connected, a cover plate is arranged at the end part of the emitter assembly in a sealing way, a polyethylene film is arranged in the emitter assembly, the emitter assembly is divided into two independent cavities of a detonation tube section and a propagation tube section of combustible gas by the polyethylene film, and a part to be emitted is arranged at the center of the propagation tube section; wherein the combustible gas adopts oxyhydrogen mixed gas;
the target chamber is connected to one side of the transmission pipe section of the emitter assembly, a target body is fixed in the target chamber, and a buffer area is arranged at the back of the target body;
the gas distribution unit is used for filling combustible oxyhydrogen gas into the emitter assembly and is respectively communicated with the round tube and the target chamber of the emitter assembly through pipelines, and comprises a gas cylinder, a gas transmission pump, a vacuum pump, a circulating pump and an air compressor;
the ignition unit is fixedly arranged in the circular tube of the detonation tube section of the emitter assembly, and the ignition unit adopts an electric spark igniter;
the detection unit is installed through a plurality of test ports formed in the pipe walls of the emitter assembly and the target chamber and comprises a plurality of pressure sensors, flame sensors, a laser detector and a measurement and control computer;
and the controller is used for controlling the operation of the test system.
Preferably, the test port is also provided with a plug for plugging, and the plug is meshed with the test port through threads.
Preferably, a baffle is fixedly connected to the bottom of the plug, and the baffle seals the bottom end of the plug.
Preferably, the surface of the baffle plate is in an arc shape, and the curvature of the arc shape is the same as that of the circular tube of the emitter assembly.
Preferably, the top surface of the plug is provided with a mark, and the surface of the circular tube of the emitter component in the circumferential direction of the test port is also provided with a mark.
Preferably, the emitter assembly is also provided with an emitter cover, the emitter cover is in a cone shape, the necking end of the cone of the emitter cover faces the target chamber, an emitted piece is placed in the necking end of the emitter cover, and the emitter cover is fixed in a pipeline of the emitter assembly through the opening end of the emitter cover.
Preferably, the emitted part adopts a cylinder, the head of the emitted part is provided with a chamfer surface, the length of the chamfer surface is larger than twice the diameter of the emitted part, the tail of the emitted part is provided with an inward concave airfoil, and the diameter of the airfoil is smaller than that of the emitted part.
Preferably, the inner wall of the necking end of the launching cover is provided with rifling, and the rifling enables the launching piece to be in a spiral state when being driven to launch.
Preferably, the transmission pipe section of the emitter assembly is further provided with an electric heating element, and the electric heating element is attached and fixed on the outer wall of the pipeline of the emitter assembly in a serpentine shape by adopting an electric heating wire.
Preferably, a plurality of sections of auxiliary pipes are further arranged in the target chamber, the pipe diameters of the auxiliary pipes are larger than the diameter of the target chamber, and the auxiliary pipes are used as buffer areas of the target chamber.
The beneficial effects of the invention are as follows:
1. according to the gas detonation driving ultra-high-speed emission test system, through the test port formed in the pipe wall of the emitter component, the propagation speed and the propagation pressure change of detonation shock waves generated after the gas is ignited are measured through the pressure sensor and the flame sensor, and the emission speed of an emitted part is recorded in cooperation with the laser sensor, so that under different test condition parameters, namely the preparation proportion of oxyhydrogen gas in the ignition gas, the ignition position in the detonation pipe section, the length proportion relation between the emitter component and the target chamber, the installation position of a polyethylene film in the emitter component and other factors, the influence on the operation speed of the emitted part in the transmission pipe section in the target chamber is verified, and the ultra-high-speed emission effect of the gas detonation driving test system is improved.
2. According to the gas detonation drive ultra-high-speed emission test system, through the concave cambered surface arranged on the surface of the baffle plate, the bottom end of the plug arranged on the test port is enabled to be smooth by utilizing the surface of the baffle plate with the same curvature and arc shape as the circular tube of the emitter assembly, and the propagation speed of detonation shock waves generated in the emitter assembly is maintained.
3. According to the gas detonation driving ultra-high-speed emission test system, the chamfer surface arranged on the head of the emitted part reduces the gas resistance received during high-speed emission, the airfoil surface arranged on the surface of the emitted part is used for further stabilizing the flight attitude of the emitted part, and the airfoil surface is arranged on the emitted part and is concave, so that the placed state of the emitted part at the necking end of the emission cover is maintained conveniently.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic illustration of the present invention;
FIG. 2 is a perspective view of the present invention;
FIG. 3 is a perspective view of a radome assembly of the present invention;
FIG. 4 is a perspective view of a plug assembly of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 3 at A;
in the figure: 1. an emitter assembly; 11. a cover plate; 12. a pipeline; 13. a test port; 2. a member to be launched; 21. chamfering the surface; 22. an airfoil; 3. a target chamber; 4. a gas distribution unit; 5. a plug; 51. a baffle; 52. identification; 6. a launch cover; 61. rifling; 7. an electric heating element; 8. and (5) attaching a pipe.
Detailed Description
For the purpose of making the objects, technical means and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention solves the technical problems that the existing method adopts flammable gas to perform detonation driving to replace gunpowder as driving energy, but less data are used for analyzing factors influencing the performance of fragments in the ultra-high speed emission state by providing the gas detonation driving ultra-high speed emission test system;
the technical scheme in the embodiment of the invention aims to solve the technical problems, and the overall thought is as follows: the test port is arranged on the pipe wall of the emitter component, the pressure sensor and the flame sensor are used for measuring the propagation speed and the propagation pressure change of detonation shock waves generated after the gas is ignited, and the laser sensor is matched for recording the emission speed of an emitted part, so that under different test condition parameters, namely the preparation proportion of oxyhydrogen gas in the ignition gas, the ignition position in the detonation pipe section, the length proportion relation between the emitter component and the target chamber, the installation position of a polyethylene film in the emitter component and other factors, the operation speed of the emitted part in the transmission pipe section in the target chamber is influenced, and the ultrahigh-speed emission effect of the gas detonation driving test system is verified;
in order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the gas detonation driving ultra-high speed emission testing system of the present invention includes:
the emitter assembly 1, the emitter assembly 1 comprises a plurality of sections of detachably connected round tubes, a cover plate 11 is mounted at the end part of the emitter assembly 1 in a sealing way, a polyethylene film is arranged in the emitter assembly 1, the polyethylene film separates the emitter assembly 1 into two independent cavities of a detonation tube section and a propagation tube section of combustible gas, and a part 2 to be emitted is mounted at the center of the propagation tube section; wherein the combustible gas adopts oxyhydrogen mixed gas;
the target chamber 3 is connected to one side of the transmission pipe section of the emitter assembly 1, a target body is fixed in the target chamber 3, and a buffer area is arranged at the back of the target body;
the gas distribution unit 4 is used for filling the flammable oxyhydrogen gas into the emitter assembly 1, the gas distribution unit 4 is respectively communicated with the circular tube of the emitter assembly 1 and the target chamber 3 through a pipeline 12, and the gas distribution unit 4 comprises a gas cylinder, a gas transmission pump, a vacuum pump, a circulating pump and an air compressor;
the ignition unit is fixedly arranged in the circular tube of the detonation tube section of the emitter assembly 1, and the ignition unit adopts an electric spark igniter;
the detection unit is installed through a plurality of test ports 13 formed in the pipe walls of the emitter assembly 1 and the target chamber 3 and comprises a plurality of pressure sensors, flame sensors, laser detectors and a measurement and control computer;
the controller is used for controlling the operation of the test system;
when in testing, firstly, the circular tube is connected and sealed by adopting a flange plate, a rubber gasket and an asbestos gasket through bolts to form an emitter assembly 1 according to the testing requirement, the air tightness is checked, and meanwhile, all instruments and equipment are debugged and are in a working preparation state; then, starting a vacuum pump in the gas distribution unit 4, which is communicated with the emitter assembly 1 through a pipeline 2, vacuumizing the emitter assembly 1 and the target chamber 3, closing the vacuum pump and starting the gas transmission pump after reaching the vacuum degree required by the test, and filling hydrogen and oxygen gases in different gas cylinders into the detonation tube sections of the emitter assembly 1, so that the volume of the filled hydrogen and oxygen gas meets the volume fraction required by the test; then closing the gas transmission pump and starting the circulating pump to stir the mixed gas of the detonating tube section in the emitter assembly 1 to form uniform mixed gas, and then closing the valve on the pipeline 2 to isolate the chamber of the emitter assembly 1 from the gas distribution unit 4; then starting a detection unit, and setting related parameters to enable each sensor and the measurement and control computer in the detection unit to be in an operation state; then starting an ignition unit, enabling the ignited oxyhydrogen gas to drive the air pressure in the detonation tube section of the emitter assembly 1 to rise and break through the critical value of the polyethylene film to break, enabling the high-pressure gas in the detonation tube section of the emitter assembly 1 to quickly rush into the low-pressure propagation tube section just like an ultrasonic gas piston, pushing the driven gas in the low-pressure propagation tube section to move towards the target chamber, driving the emitted part 2 to emit at high speed, recording data information acquired by each pressure sensor and flame sensor on two sides of the polyethylene film in the emitter assembly 1, recording the speed of the emitted part 2 in the target chamber 3 through the laser sensor, and observing and recording the impact damage condition of the target body in the target chamber 3 after the test is completed; after the detonation test is completed, an air compressor is started to carry out positive pressure purging on the emitter component 1 of the emitter component 1, waste gas in the emitter component 1 of the pipeline 12 is removed, and the emitted piece 2 and the target body are replaced and reset to carry out the next ultrahigh-speed emission test;
the invention utilizes the test port 13 arranged on the pipe wall of the emitter component 1, measures the propagation speed and propagation pressure change of detonation shock wave generated after the gas is ignited through the pressure sensor and the flame sensor, and records the emission speed of the emitted part 2 in cooperation with the laser sensor, thereby verifying the ultrahigh-speed emission effect of the test system driven by the detonation of the lifting gas under different test condition parameters, namely the preparation proportion of the oxyhydrogen gas in the igniting gas, the ignition position in the detonating pipe section, the length proportion relation between the emitter component 1 and the target chamber 3, the installation position of the polyethylene film in the emitter component 1 and other factors, and the operation speed of the emitted part 2 in the transmitting pipe section in the target chamber 3.
As an embodiment of the present invention, as shown in fig. 2 and 4, the test port 13 is further provided with a plug 5 for plugging, and the plug 5 is engaged with the test port 13 through threads; before the test starts, each sensor or detector in the detection unit is respectively installed in the test port 13, so as to meet the number requirements of measurement parameters in different test processes, avoid the shortage or overmuch of measurement data quantity, detect the propagation parameters of the gas ignition instant detonation shock wave by selecting proper number of sensors and detector elements to be installed on the test ports 13 on the tube walls of the emitter assembly 1 and the target chamber 3, and plug the rest of the test ports 13 through the plugs 5 engaged by threads, maintain the tightness of the emitter assembly 1 and the target chamber 3, and perform the emission test of the emitted part 2.
As an embodiment of the present invention, as shown in fig. 4, a baffle plate 51 is fixedly connected to the bottom of the plug 5, and the baffle plate 51 seals the bottom end of the plug 5; before the test starts, selecting the emitter assembly 1 or the point to be measured, and sealing other test ports 13 through the plug 5, wherein the bottom of the plug 5 is open, so that a local cavity is formed on the pipe wall of the circular pipe of the emitter assembly 1, and then a local wave-absorbing effect is generated on the detonation shock wave in the emitter assembly 1, so that the propagation speed of the detonation shock wave generated after the ignition of the combustible gas is reduced; the bottom end of the blocking piece 51 arranged at the bottom of the plug 5 is closed, so that a local cavity is prevented from being formed on the pipe wall of the circular pipe of the emitter assembly 1, and the propagation speed of detonation shock waves generated in the emitter assembly 1 is maintained.
As an embodiment of the present invention, as shown in fig. 4, the surface of the baffle plate 51 is in an arc shape, and the curvature of the arc shape is the same as that of the circular tube of the emitter assembly 1; after the plug 5 is mounted on the test port 13, a blocking piece 51 at the bottom end of the plug 5 and an arc-shaped pipe wall of a circular pipe in the emitter assembly 1 can form an uneven surface on the inner wall of the circular pipe, so that the propagation speed of detonation shock waves in the emitter assembly 1 is influenced; the concave cambered surface arranged on the surface of the baffle plate 51 enables the bottom end of the plug 5 arranged on the test port 13 to utilize the surface of the baffle plate 51 with the same curvature and arc shape as the circular tube of the emitter assembly 1 to enable the surface of the inner wall of the circular tube to tend to be smooth, and the propagation speed of detonation shock waves generated in the emitter assembly 1 is maintained.
As an embodiment of the present invention, as shown in fig. 2 and 4, the top surface of the plug 5 is provided with a mark 52, and the circular tube surface of the emitter component 1 in the circumferential direction of the test port 13 is also provided with a mark 52; in the testing process, the plug 5 which is disassembled and connected is meshed in the testing port 13 through threads, and in order to keep the tightness between the plug 5 and the testing port 13, the screwing force is controlled through a torque wrench, so that the contact surface between the plug 5 and the testing port 13 is prevented from being damaged due to insufficient sealing or excessive screwing caused by non-screwing; through setting up the sign 52 on end cap 5 surface and emitter subassembly 1 pipe surface, through ordinary spanner cooperation sign 52, can control the state of screwing of end cap 5 in test port 13, the condition of excessive screwing when avoiding installing end cap 5, the screw thread of meshing between protection test port 13 and end cap 5 maintains the leakproofness between end cap 5 and test port 13.
As an embodiment of the present invention, as shown in fig. 2 and 3, the emitter assembly 1 is further provided with an emitter cap 6, the emitter cap 6 is in a cone shape, the necking end of the cone of the emitter cap 6 faces the target chamber 3, the necking end of the emitter cap 6 is provided with the emitted piece 2, and the emitter cap 6 is fixed in the pipeline of the emitter assembly 1 through the opening end thereof; in the testing process, the flammable oxyhydrogen gas performs detonation reaction on a detonation tube section and a propagation tube section in the ignition trailing edge generator assembly, detonation shock waves act on the emitted piece 2 in the necking end of the emission cover 6, and the energy of the detonation shock waves is utilized to drive the emitted piece 2 to emit and move along the target chamber 3 at a high speed; the launching piece 2 is placed through the launching cover 6, so that the launching piece is positioned in the central axis direction of a pipeline of the launching body assembly 1, and the propagation speed of detonation shock waves in the launching cover 6 is further increased by utilizing the cone shape of the launching cover 6, so that the placed launching piece 2 obtains sufficient driving speed of the detonation shock waves.
As an embodiment of the present invention, as shown in fig. 3 and 5, the emitted part 2 adopts a cylinder, the head of the emitted part 2 is provided with a chamfer surface 21, the length of the chamfer surface 21 is greater than twice the diameter of the emitted part 2, the tail of the emitted part 2 is provided with an inward concave airfoil 22, and the diameter of the airfoil 22 is smaller than the diameter of the emitted part 2; in the test process, the high-speed emitted part 2 needs to keep the flying stability, otherwise, the collision test effect between the emitted part 2 and the target body is damaged due to easy formation of deflection in the space of the target chamber 3, the air resistance applied during high-speed emission is reduced through the chamfer surface 21 arranged at the head of the emitted part 2, the airfoil surface 22 arranged on the surface of the emitted part 2 is used for further stabilizing the flying posture of the emitted part 2, and the airfoil surface 22 is arranged on the emitted part 2 and is concave, so that the placed state of the emitted part 2 at the necking end of the emission cover 6 is conveniently maintained.
As an embodiment of the present invention, as shown in fig. 5, a rifling 61 is disposed on the inner wall of the throat end of the launching cap 6, and the rifling 61 makes the launched element 2 in a spiral state when driven to launch; in the testing process, the fine deviation of the posture of the launched part 2 can lead to the deviation of the flight posture, and then the ultra-high speed launching state is influenced, by forming rifling 61 on the inner wall of the necking end of the launching cover 6, the launched part 2 is guided to form spin when moving in the launching cover 6, and the stable trajectory of the spinning playing a role in gyro stability is utilized after the launched part 2 is separated from the launching cover 6, so that the ultra-high speed flight state of the launched part 2 is ensured.
As an embodiment of the present invention, as shown in fig. 2, an electric heating element 7 is further disposed on the propagation pipe section of the emitter assembly 1, and the electric heating element 7 is attached and fixed on the outer wall of the pipe of the emitter assembly 1 by adopting a heating wire serpentine shape; in the testing process, a great amount of heat is generated when the detonation gas is ignited, and part of the heat is absorbed by the external environment through the emitter assembly 1, so that the electric heating element 7 attached to the emitter assembly 1 improves the temperature of the transmission pipe section due to the high enthalpy energy of the detonation shock wave, slows down the heat loss caused by the heating of the energy of the detonation shock wave, maintains the enthalpy value of the detonation shock wave, and ensures the driving speed of the detonation shock wave.
As an embodiment of the present invention, as shown in fig. 2, a plurality of sections of auxiliary pipes 8 are further disposed in the target chamber 3, the pipe diameter of the auxiliary pipe 8 is larger than the diameter of the target chamber 3, and the auxiliary pipe 8 is used as a buffer area of the target chamber 3; in the testing process, after impacting the target body, the launched piece 2 launched at high speed still has larger kinetic energy along with the propagating detonation shock wave, has certain destructiveness to the buffer zone of the target chamber 3, plays a role in absorbing the propagating detonation shock wave through the auxiliary pipe 8 which is arranged in the target chamber 3 and is larger than the pipe diameter of the target chamber 3, slows down the propagation energy of the detonation shock wave, protects the buffer zone structure of the target chamber 3, and the arranged auxiliary pipe 8 increases the volume of the target chamber 3, is convenient for improving the setting volume of the buffer zone and enhances the buffer function of the target chamber 3.
The specific working procedure is as follows:
when in testing, firstly, the circular tube is connected and sealed by adopting a flange plate, a rubber gasket and an asbestos gasket through bolts to form an emitter assembly 1 according to the testing requirement, the air tightness is checked, and meanwhile, all instruments and equipment are debugged and are in a working preparation state; then, starting a vacuum pump in the gas distribution unit 4, which is communicated with the emitter assembly 1 through a pipeline 2, vacuumizing the emitter assembly 1 and the target chamber 3, closing the vacuum pump and starting the gas transmission pump after reaching the vacuum degree required by the test, and filling hydrogen and oxygen gases in different gas cylinders into the detonation tube sections of the emitter assembly 1, so that the volume of the filled hydrogen and oxygen gas meets the volume fraction required by the test; then closing the gas transmission pump and starting the circulating pump to stir the mixed gas of the detonating tube section in the emitter assembly 1 to form uniform mixed gas, and then closing the valve on the pipeline 2 to isolate the chamber of the emitter assembly 1 from the gas distribution unit 4; then starting a detection unit, and setting related parameters to enable each sensor and the measurement and control computer in the detection unit to be in an operation state; then starting an ignition unit, enabling the ignited oxyhydrogen gas to drive the air pressure in the detonation tube section of the emitter assembly 1 to rise and break through the critical value of the polyethylene film to break, enabling the high-pressure gas in the detonation tube section of the emitter assembly 1 to quickly rush into the low-pressure propagation tube section just like an ultrasonic gas piston, pushing the driven gas in the low-pressure propagation tube section to move towards the target chamber, driving the emitted part 2 to emit at high speed, recording data information acquired by each pressure sensor and flame sensor on two sides of the polyethylene film in the emitter assembly 1, recording the speed of the emitted part 2 in the target chamber 3 through the laser sensor, and observing and recording the impact damage condition of the target body in the target chamber 3 after the test is completed; after the detonation test is completed, an air compressor is started to carry out positive pressure purging on the emitter component 1 of the emitter component 1, waste gas in the emitter component 1 of the pipeline 12 is removed, and the emitted piece 2 and the target body are replaced and reset to carry out the next ultrahigh-speed emission test; the method comprises the steps that a test port 13 formed in the pipe wall of an emitter assembly 1 is utilized, the propagation speed and the propagation pressure change of detonation shock waves generated after gas ignition are measured through a pressure sensor and a flame sensor, and the emission speed of an emitted part 2 is recorded in cooperation with a laser sensor, so that under different test condition parameters, namely the preparation proportion of oxyhydrogen gas in ignition gas, the ignition position in a detonation pipe section, the length proportion relation between the emitter assembly 1 and a target chamber 3, the installation position of a polyethylene film in the emitter assembly 1 and other factors, the operation speed of the emitted part 2 in the transmission pipe section in the target chamber 3 is influenced, and the ultrahigh-speed emission effect of a gas detonation driving test system is verified; the launching cover 6 is arranged to place the launched piece 2, so that the launching piece is positioned in the central axis direction of the pipeline of the launching body assembly 1, and the propagation speed of detonation shock waves in the launching cover 6 is further increased by utilizing the cone shape of the launching cover 6, so that the placed launched piece 2 obtains sufficient driving speed of the detonation shock waves; the airfoil surface 22 arranged on the surface of the launched part 2 is used for further stabilizing the flying attitude of the launched part 2, and the airfoil surface 22 is arranged on the launched part 2 and is concave, so that the state that the launched part 2 is placed at the necking end of the launching cover 6 is maintained.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A gas detonation-driven ultra-high-speed emission testing system, comprising:
the device comprises an emitter assembly (1), wherein the emitter assembly (1) comprises a plurality of sections of circular tubes which are detachably connected, a cover plate (11) is arranged at the end part of the emitter assembly (1) in a sealing way, a polyethylene film is arranged in the emitter assembly (1) and divides the emitter assembly (1) into two independent cavities of a detonation tube section and a propagation tube section of combustible gas, and a part (2) to be emitted is arranged in the center of the propagation tube section;
the target chamber (3), the target chamber (3) is connected to one side of the transmission tube section of the emitter assembly (1), the target body is fixed in the target chamber (3), and the back of the target body is provided with a buffer zone;
the gas distribution unit (4) is used for filling the flammable oxyhydrogen gas into the emitter assembly (1), the gas distribution unit (4) is respectively communicated with the circular tube and the target chamber (3) of the emitter assembly (1) through a pipeline (12), and the gas distribution unit (4) comprises a gas cylinder, a gas transmission pump, a vacuum pump, a circulating pump and an air compressor;
the ignition unit is fixedly arranged in the circular tube of the detonation tube section of the emitter assembly (1);
the detection unit is installed through a plurality of test ports (13) formed in the pipe walls of the emitter assembly (1) and the target chamber (3), and comprises a plurality of pressure sensors, flame sensors, laser detectors and a measurement and control computer;
the controller is used for controlling the operation of the test system;
the emitter assembly (1) is also provided with an emitter cover (6), the emitter cover (6) is in a cone shape, the necking end of the cone of the emitter cover (6) faces the target chamber (3), an emitted piece (2) is placed in the necking end of the emitter cover (6), and the emitter cover (6) is fixed in a pipeline of the emitter assembly (1) through the opening end of the emitter cover;
the device is characterized in that the emitted piece (2) adopts a column, the head of the emitted piece (2) is provided with a chamfer surface (21), the length of the chamfer surface (21) is larger than twice the diameter of the emitted piece (2), the tail of the emitted piece (2) is provided with an inward concave airfoil surface (22), and the diameter of the airfoil surface (22) is smaller than the diameter of the emitted piece (2);
the inner wall of the necking end of the launching cover (6) is provided with rifling (61), and the rifling (61) enables the launched piece (2) to be in a spiral state when being driven to launch;
an electric heating element (7) is further arranged on the transmission pipe section of the emitter assembly (1), and the electric heating element (7) is in snake-shaped attachment and fixation on the outer wall of the pipeline of the emitter assembly (1);
a plug (5) for plugging is further arranged on the test port (13), and the plug (5) is meshed with the test port (13) through threads;
the bottom of the plug (5) is fixedly connected with a baffle (51), and the baffle (51) enables the bottom end of the plug (5) to be closed.
2. The gas detonation drive ultra-high speed emission test system according to claim 1, wherein the surface of the baffle plate (51) is arranged in an arc shape, and the curvature of the arc shape is the same as the curvature of a circular tube of the emitter assembly (1).
3. The gas detonation drive ultra-high-speed emission test system according to claim 2, wherein the top surface of the plug (5) is provided with a mark (52), and the circumferential surface of the circular tube of the emitter assembly (1) of the test port (13) is also provided with the mark (52).
4. The gas detonation drive ultra-high-speed emission test system according to claim 1, wherein a plurality of sections of auxiliary pipes (8) are further arranged in the target chamber (3), the pipe diameter of each auxiliary pipe (8) is larger than the diameter of the target chamber (3), and each auxiliary pipe (8) is used as a buffer zone of the target chamber (3).
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| CN206131896U (en) * | 2016-11-02 | 2017-04-26 | 中国人民武装警察部队工程大学 | Urge compound strike type non -fatal ammunition of tear kinetic energy |
| KR20210052030A (en) * | 2019-10-31 | 2021-05-10 | 주식회사 한화 | Working table for guided missile inspection |
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| CN106556543A (en) * | 2016-11-10 | 2017-04-05 | 北京理工大学 | For the fuel gas detonation driven generator of High speed load |
| CN107942029B (en) * | 2017-11-14 | 2020-08-11 | 北京科技大学 | Rapid and effective direct detonation pipeline set and experimental method |
| CN211337618U (en) * | 2019-12-10 | 2020-08-25 | 上海铸未自动化机械有限公司 | Many discharge openings auger conveying pipeline |
| CN113552169A (en) * | 2020-04-23 | 2021-10-26 | 中国石油化工股份有限公司 | Device and method for testing characteristic parameters of combustible gas flowing and blasting process |
| CN112902771B (en) * | 2021-01-21 | 2022-09-27 | 中国科学院力学研究所 | Gas detonation drive ultra-high-speed launching system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205784908U (en) * | 2016-05-30 | 2016-12-07 | 中国工程物理研究院电子工程研究所 | A kind of air artillery equivalent loading test device for hanging |
| CN206131896U (en) * | 2016-11-02 | 2017-04-26 | 中国人民武装警察部队工程大学 | Urge compound strike type non -fatal ammunition of tear kinetic energy |
| KR20210052030A (en) * | 2019-10-31 | 2021-05-10 | 주식회사 한화 | Working table for guided missile inspection |
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