CN109406748B - Modular explosive burning speed and detonation velocity measuring system - Google Patents
Modular explosive burning speed and detonation velocity measuring system Download PDFInfo
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- CN109406748B CN109406748B CN201810997484.XA CN201810997484A CN109406748B CN 109406748 B CN109406748 B CN 109406748B CN 201810997484 A CN201810997484 A CN 201810997484A CN 109406748 B CN109406748 B CN 109406748B
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- 239000002360 explosive Substances 0.000 title claims abstract description 139
- 238000005474 detonation Methods 0.000 title claims abstract description 29
- 239000000523 sample Substances 0.000 claims abstract description 163
- 239000000843 powder Substances 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 238000004806 packaging method and process Methods 0.000 claims abstract description 8
- 230000000712 assembly Effects 0.000 claims abstract description 7
- 238000000429 assembly Methods 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 10
- 238000012546 transfer Methods 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 4
- IXHMHWIBCIYOAZ-UHFFFAOYSA-N styphnic acid Chemical compound OC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C(O)=C1[N+]([O-])=O IXHMHWIBCIYOAZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 238000004880 explosion Methods 0.000 abstract description 6
- 239000003814 drug Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000000977 initiatory effect Effects 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000003721 gunpowder Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/227—Explosives, e.g. combustive properties thereof
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/18—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken to traverse a fixed distance
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- Combustion & Propulsion (AREA)
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Abstract
The invention relates to a modular explosive burning rate and detonation velocity measuring system which comprises a charging assembly, N probe assemblies, an ignition assembly, a data recorder and an ignition assembly, wherein the ignition assembly ignites the explosive to be measured in the charging assembly 1; the explosive charging assembly is filled with tested explosives and powders, the probe assembly comprises a probe shell, a probe and a packaging body, the packaging body is filled between the probe shell and the probe, one end of the probe is a probe end of the probe assembly, and the other end of the probe is the tail end of the probe assembly; the outer structure of the probe end of the probe assembly is in sealing fit connection with the charge measuring hole, and a certain gap is kept between the probe end face and the formed explosive to be measured; when the ignition assembly is not detonated, the probe is insulated from the probe shell, when the ignition assembly is detonated, the explosive to be detected in the explosive charging assembly is combusted and exploded to generate plasma, and the probe shell are changed into a passage from an open circuit; and the data recorder calculates the burning rate or the explosion rate of the tested explosive according to the ignition time, the conduction time of each probe assembly and the corresponding positions of the explosive.
Description
Technical Field
The invention relates to a modular explosive burning rate and detonation velocity measuring system, which is used for measuring the burning rate/detonation velocity capability of various explosives and powders (initiating explosive, pyrotechnic composition and the like), and belongs to the technical field of measurement of initiating explosive agents.
Background
Currently, the conventional method of measuring the firing rate of gunpowder is the "target line method (i.e. 'on-off method')" -a metal target line buried in a grain is burned off by burning the gunpowder to measure the time of combustion transfer. The method is simple in principle, but the medicament is prepared into a medicine strip or a medicine column and is measured in a sealed cavity. The metal target line and the medicament direct contact, some explosive even need drill the installation metal target line, and the preparation process is comparatively complicated, has certain potential safety hazard, and is higher to measuring equipment's requirement to the powder charge environment of measuring environment and initiating explosive actual work during has very big difference, and systematic error is great.
The explosive detonation velocity measurement generally adopts a probe method (namely, a ' break-make method ') ' -the explosive to be measured is made into a charge column, a broken probe is directly pressed in a tube shell, and a plasma formed by detonation conducts the broken probe. Compared with a target line method, the method has higher measurement sensitivity and precision and is suitable for high-speed measurement. However, the direct contact of the agent with the probe presents a certain risk, and accidental fire may occur when measuring sensitive agents. The measuring system described in the patent has the advantages that the probe and the medicament are not in contact with each other, and the measuring system has high measuring accuracy and good safety. The explosive to be measured can be made into a charge column or directly pressed in a tube shell for measurement.
Generally, different devices are required for measuring the burning rate and the detonation rate of the explosive and the powder respectively. In order to make the charging environment of the tested explosive and powder consistent with the actual charging environment as much as possible, reduce the complexity of the testing tool and improve the safety of the testing process, it is necessary to develop a new device capable of simultaneously measuring the burning rate and the detonation rate of the explosive.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: overcomes the defects of the prior art, provides a modularized high-precision measuring system for the burning speed and the explosion speed of explosives and powders,
the technical solution of the invention is as follows: the utility model provides a modularization explosive burning rate detonation velocity measurement system, this system includes charge subassembly, N probe assembly, ignition assembly, data record appearance, and N is greater than or equal to 2, wherein:
the ignition assembly is driven by the ignition current signal to ignite the explosive to be detected in the explosive charging assembly;
the explosive charging assembly is internally filled with the molded tested explosives and powders, and N explosive charging measuring holes are uniformly arranged on the side surface of the explosive charging assembly along the axial direction of the explosive charging assembly;
the probe assemblies comprise probe shells, probes and packaging bodies, the packaging bodies are filled between the probe shells and the probes, the end face of one end of each probe is guaranteed to be mechanically polished and flush with the end face of the probe shell and is marked as the probe end of the probe assembly, and the other end of each probe extends to the outside of the probe shell and is marked as the tail end of the probe assembly; the outer structure of the probe end of the probe assembly is in sealing fit connection with the charge measuring hole of the charge assembly, and a certain gap is kept between the probe end face and the formed explosive to be measured; when the ignition assembly is not detonated, the probe is insulated from the probe shell, the ignition assembly detonates the explosive charging assembly, the explosive to be detected in the explosive charging assembly is combusted and exploded to generate plasma, and the probe shell are changed into a passage from an open circuit because the plasma has conductivity;
and the data recorder is used for sending an ignition current signal to the ignition assembly, recording the ignition time of the ignition assembly, detecting the time when the probe and the probe shell in each probe assembly are changed from open circuit to open circuit, recording the time as the conduction time of each probe assembly, and calculating the burning rate or the detonation rate of the tested explosive according to the ignition time, the conduction time of each probe assembly and the corresponding positions of the explosive.
The data recorder comprises a probe signal switching box, a detonation instrument and a dynamic strain gauge, wherein:
the detonating instrument receives an external instruction, sends an ignition current signal to the ignition assembly, and simultaneously transmits the ignition current signal to the dynamic strain gauge as a trigger signal;
the probe signal adapter box is used for detecting the state from 'off' to 'on' between the probe and the charge assembly shell to form a level signal and transmitting the level signal to the dynamic strain gauge;
and the dynamic strain gauge is used for acquiring N-path level signals to obtain the conduction time of the probe assemblies, and calculating the burning rate or the detonation rate of the tested explosive according to the conduction time of each probe assembly and the corresponding position of the tested explosive.
The probe signal switching box comprises N probe signal acquisition circuits, each probe signal acquisition circuit comprises a voltage positive end U +, a voltage negative end U-, a resistor R, a power E, an output positive end OUT + and an output negative end OUT-, the voltage positive end U + is connected after the power E positive end is connected with the power R in series, the power E negative end U is connected with the power E negative end, the probe of the probe assembly is connected with the voltage positive end, the voltage negative end U-is connected with the charge assembly shell, the output positive end OUT + is connected with the voltage positive end, the output negative end OUT + is connected with the voltage negative end, the voltage of the input positive end OUT + and the output negative end OUT-can detect the state from 'disconnection' to 'connection' between the probe and the charge assembly shell, and the probe signal switching box sends a level signal between the input positive end OUT + and the output negative end OUT + to the dynamic strain gauge.
The packaging body is a resin glue solution condensate, a glass powder sealing object or a thermoplastic clinker.
The ignition assembly comprises a partition plate igniter and an ignition head, the partition plate igniter is composed of a partition plate shell, input explosive, primary output explosive and secondary output explosive, the ignition head is composed of an ignition bridge wire and detected explosive, the ignition bridge wire of the ignition head receives direct current electric energy input from the outside and then generates heat to ignite the detected explosive, the detected explosive detonates the input explosive in the partition plate igniter, then the primary output explosive and the secondary output explosive are detonated gradually, and finally the detected explosive in the explosive charging assembly is detonated.
The explosive to be tested is trinitroresorcinol lead.
The system also comprises a plug which is used for replacing the probe assembly when the explosive is pressed, and the plug is in sealing fit with the explosive charging measuring hole to be connected with the plug to be in complete contact with the formed explosive to be measured without clearance.
The dynamic strain gauge sampling frequency is at least 200 MHz.
The value range of the gap between the end face of the probe and the formed tested explosive is 0.5-1 mm.
The probe assembly and the charging assembly are sealed by an O-shaped sealing ring.
Compared with the prior art, the invention has the beneficial effects that:
(1) the measuring probe is not in direct contact with the explosive to be measured, and the measuring probe cannot rub or extrude with a medicament when a measuring system is installed, so that the measuring safety is effectively improved;
(2) the invention has the capability of measuring the burning rate/explosion rate of various explosives and powders (such as initiating explosive, pyrotechnic composition and the like), and the measurement time precision reaches 5ns when the sampling frequency of the dynamic strain gauge reaches 200 MHz;
(3) the measuring system adopts a modular design, can increase the length of the measuring tool and the number of probe components according to requirements, can be combined into one section to multiple sections of explosive columns at will for measurement, and can simultaneously measure the burning rate/explosion rate of each section of explosive column.
(4) The probe signal switching box circuit is simple in structure and easy to realize, and can accurately measure the on-off of the probe and the probe shell circuit.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a baffle igniter configuration according to an embodiment of the invention;
fig. 3 is a schematic structural view of an ignition head according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the charge assembly of an embodiment of the present invention;
FIG. 5 is a schematic view of a probe assembly according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a probe signal acquisition circuit according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a probe signal adapter according to an embodiment of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific examples.
As shown in figure 1, the invention provides a modular explosive burning rate and detonation velocity measuring system, which comprises a charging assembly 1, N probe assemblies 2, an ignition assembly 3 and a data recorder, wherein N is more than or equal to 2:
the ignition assembly 3 is driven by an ignition current signal (generally 3A/50ms direct current) to ignite the explosive to be detected in the explosive charging assembly 1; the ignition assembly is in sealing connection with the charging assembly through the O-shaped sealing ring, so that the consistency of ignition, combustion and detonation is ensured.
The explosive charging assembly 1 is internally filled with the tested explosives and powders, N explosive charging measuring holes are uniformly arranged on the side surface of the explosive charging assembly along the axial direction of the explosive charging assembly, and one ends of N probe assemblies are matched and connected with the explosive charging measuring holes; the probe assembly 2 and the powder charging assembly are sealed by an O-shaped sealing ring and are fixed on two side faces of the powder charging assembly through threaded connection.
As shown in fig. 5, each probe assembly 2 includes a probe housing 19, a probe 20, and an encapsulation body 21, the encapsulation body 21 is filled in a gap between the probe housing 19 and the probe 20, the encapsulation body 21 is a cured resin glue, a glass frit seal, or a thermoplastic clinker, and ensures insulation between the probe and the probe housing, an end face of one end of the probe 20 is ensured to be mechanically polished flush with an end face of the probe housing 19 and is marked as a probe end of the probe assembly 2, and the other end of the probe 20 extends to the outside of the probe housing 19 and is marked as a tail end of the probe assembly 2; the outer structure of the probe end of the probe assembly is connected with the charge measuring hole in a sealing fit mode, a certain gap is kept between the end face of the probe 20 and the formed explosive to be measured, the value range of the gap between the end face of the probe 20 and the formed explosive to be measured is 0.5-1 mm, and the gap is determined by the fit size of the probe shell 19 of the probe assembly and the charge shell 13 of the charge assembly. The traditional measuring method has potential safety hazards when the measuring probe extrudes the explosive column, the measuring probe is not in direct contact with the explosive to be measured, the measuring probe cannot rub or extrude with the explosive when a measuring system is installed, and the measuring safety is effectively improved. When the ignition assembly is not detonated, the probe 20 is insulated from the probe shell, the ignition assembly detonates the charge assembly, the explosive to be detected in the charge assembly is combusted and detonated to generate plasma, and the probe shell are changed into a passage from an open circuit because the plasma has conductivity.
And the data recorder 9 is used for sending an ignition current signal to the ignition assembly 3, recording the ignition moment of the ignition assembly 3, detecting the moment when the probe and the probe shell in each probe assembly are changed from open circuit to open circuit, recording the moment as the conduction moment of each probe assembly, and calculating the burning rate or the detonation rate of the tested explosive according to the ignition moment, the conduction moment of each probe assembly and the corresponding positions of the explosive.
As an embodiment of the present invention, the data recorder includes a probe signal adapter 4, an initiator 5, and a dynamic strain gauge 6, wherein:
the detonating instrument 5 receives an external instruction, sends an ignition current signal to the ignition assembly 3, and simultaneously transmits the ignition current signal to the dynamic strain gauge 6 as a trigger signal;
the probe signal adapter box 4 is used for detecting a level signal for marking the state from 'off' to 'on' between the probe and the charge assembly shell and transmitting the level signal to the dynamic strain gauge;
and the dynamic strain gauge 6 is used for acquiring N-path level signals to obtain the conduction time of the probe assemblies, and calculating the burning rate or the detonation rate of the tested explosive according to the conduction time of each probe assembly and the corresponding position of the tested explosive. When the sampling frequency of the dynamic strain gauge reaches more than 200MHz, the measurement time precision reaches 5 ns.
The probe signal transfer box 4 comprises N probe signal acquisition circuits, each probe signal acquisition circuit corresponds to a probe assembly one by one, each probe signal acquisition circuit comprises a voltage positive terminal U1+, a voltage negative terminal U1-, a resistor R1, a power supply E1, an output positive terminal OUT1+ and an output negative terminal OUT1-, the positive electrode of the power supply E1 is connected with the voltage positive terminal U1+ after being connected with the R1 in series, the negative electrode of the power supply E1 is connected with the voltage negative terminal U1-, the voltage positive terminal is connected with a probe of the probe assembly, the voltage negative terminal U1-is connected with a charging assembly shell, the output positive terminal OUT1+ is connected with the voltage positive terminal, the output negative terminal OUT1+ is connected with the voltage negative terminal, the voltage of the output positive terminal OUT1+ and the output negative terminal OUT 1-can detect the state from 'disconnection' to 'connection' between the probe and the charging assembly shell, the probe signal transfer box 4 sends a level signal between the input positive terminal OUT1+ and the output negative terminal OUT1+ to a dynamic strain gauge, as shown in fig. 6.
As shown in FIG. 7, 5V voltage is applied between the probe (ports 1+ -6 +) and the charge assembly housing (ports 1-6-) respectively through the power supply (E1-E6) and the series resistor R1, and the voltage value between the ports 1+ -1-6 + -6-is output through the ports OUT 1-OUT 6. When the probe is insulated from the shell, the output voltage is 5V, when the probe is conducted with the shell, the voltage signal is instantly reduced to 0, and the change of the voltage value is transmitted to the dynamic strain gauge through the port OUT for recording. Wherein R1-R6 are current limiting resistors.
In one embodiment of the invention, the ignition assembly comprises a baffle igniter and an ignition head. The diaphragm igniter is composed of a diaphragm shell 7, an input charge 8, a primary output charge 9 and a secondary output charge 10, as shown in fig. 2. The ignition head consists of an ignition bridgewire 11 and a tested explosive 12, as shown in figure 3. An ignition bridge wire 11 of the ignition head generates heat after receiving externally input direct current electric energy, so as to ignite a tested explosive 12, the tested explosive 12 ignites an input charge 8 in the partition plate igniter 1, and the partition plate shell 7 is positioned between the input charge 8 and a primary output charge 9 and is used for attenuating shock waves ignited by the input charge 8; and then the primary output charge 9 and the secondary output charge 10 are gradually detonated, and finally the tested explosive in the charge assembly is detonated. The explosive to be tested is trinitroresorcinol lead. The invention adopts an ignition head to ignite the clapboard igniter which ignites the charge component, and the clapboard igniter has the function of sealing the charge component cavity.
The system for measuring the burning rate and the detonation velocity of the explosives and powders also comprises a plug 18, when the explosives and powders are pressed, the plug 18 is used for replacing a probe assembly, and is in sealing fit with the charging measuring hole to connect the plug 18 to be in complete contact with the formed explosives and powders to be measured, so that no gap exists, the chemicals are ensured not to leak through the side hole under the action of the explosive pressing force, and a complete explosive column can be formed. And the plug 18 and the charging assembly are sealed by an O-shaped sealing ring.
As a preferred scheme of the invention, the measuring system adopts a modular design, can be combined into one section to multiple sections of grains at will for measurement, and can measure the burning rate/explosion rate of each section of grains at the same time. In one embodiment of the invention, as shown in fig. 4, the charge assembly comprises a charge shell 13, a first charge 14, a second charge 15, a third charge 16, a tested explosive 17 and a plug 18. During charging, the tested explosive is pressed into the first explosive charging part 14, the second explosive charging part 15 and the third explosive charging part 16 respectively, and the plug 18 is installed on the explosive charging shell 13 to plug the side hole so as to prevent the medicament from leaking out from the side surface during explosive pressing. After the medicine is pressed, the medicine pressing device is taken down, and the probe assembly is installed. The internal loading and the loading pressure of the first loading part 14, the second loading part 15 and the third loading part 16 are adjusted according to requirements. The tested explosives and powders are all trinitroresorcinol lead. The ignition assembly outputs high-temperature and high-pressure fuel gas to gradually detonate the first charge part 14, the second charge part 15 and the third charge part 16 of the charge assembly. The first charge 14, the second charge 15 and the third charge 16 can also be used as a charge component to be tested for standby. The plug 18 is in full contact with the explosive columns inside the first explosive element 14, the second explosive element 15 and the third explosive element 16 without gaps.
The technology of the invention can be widely used for measuring the burning rate/explosion rate of various explosives and powders, such as primary explosive, pyrotechnic composition and the like.
The invention is not described in detail and is within the knowledge of a person skilled in the art.
Claims (10)
1. The utility model provides a modularization explosive burning rate detonation velocity measurement system which characterized in that includes powder charge subassembly (1), a N probe assembly (2), ignition assembly (3), data record appearance, N is greater than or equal to 2, wherein:
the ignition assembly (3) is driven by the ignition current signal to ignite the explosive to be detected in the explosive charging assembly (1);
the explosive charging assembly (1) is internally filled with the molded tested explosives and powders, and N explosive charging measuring holes are uniformly arranged on the side surface of the explosive charging assembly (1) along the axial direction;
the probe assemblies (2) respectively comprise a probe shell (19), a probe (20) and a packaging body (21), the packaging body (21) is filled between the probe shell (19) and the probe (20), the end face of one end of the probe (20) is guaranteed to be mechanically polished and flushed with the end face of the probe shell (19) and is marked as the probe end of the probe assembly (2), and the other end of the probe (20) extends to the outside of the probe shell (19) and is marked as the tail end of the probe assembly (2); the outer structure of the probe end of the probe assembly is in sealing fit connection with a charge measuring hole of the charge assembly (1), and a certain gap is kept between the end surface of the probe (20) and the formed explosive to be measured; when the ignition assembly is not detonated, the probe (20) is insulated from the probe shell, the ignition assembly detonates the charge assembly, the explosive to be detected in the charge assembly is combusted and exploded to generate plasma, and the probe shell are changed into a passage from an open circuit because the plasma has conductivity;
and the data recorder is used for sending an ignition current signal to the ignition assembly (3), recording the ignition time of the ignition assembly (3), detecting the time when the probe and the probe shell in each probe assembly (2) are changed from open circuit to open circuit, recording the time as the conduction time of each probe assembly, and calculating the burning rate or the detonation rate of the tested explosive according to the ignition time, the conduction time of each probe assembly (2) and the corresponding positions of the explosive.
2. The system for measuring the burning rate and the detonation velocity of the modular explosives and powders according to claim 1, characterized in that the data recorder comprises a probe signal adapter box (4), a detonator (5) and a dynamic strain gauge (6), wherein:
the detonation instrument (5) receives an external instruction, sends an ignition current signal to the ignition assembly (3), and simultaneously transmits the ignition current signal to the dynamic strain gauge (6) to serve as a trigger signal;
the probe signal adapter box (4) is used for detecting the state from 'off' to 'on' between the probe and the charge assembly shell to form a level signal and transmitting the level signal to the dynamic strain gauge;
and the dynamic strain gauge (6) is used for collecting N-path level signals to obtain the conduction time of the probe components, and calculating the burning rate or the detonation rate of the tested explosive according to the conduction time of each probe component and the corresponding position of the tested explosive.
3. The system for measuring the burning rate and the detonation velocity of the modular explosives and powders as claimed in claim 2, characterized in that: the probe signal transfer box (4) comprises N probe signal acquisition circuits, each probe signal acquisition circuit comprises a voltage positive terminal U1+, a voltage negative terminal U1 and a resistor R1, the dynamic strain gauge comprises a power supply E1, an output positive terminal OUT1+ and an output negative terminal OUT1-, a positive electrode of the power supply E1 is connected with a voltage positive terminal U1+ after being connected with R1 in series, a negative electrode of the power supply E1 is connected with a voltage negative terminal U1-, the voltage positive terminal is connected with a probe of a probe assembly, the voltage negative terminal U1-is connected with a charge assembly shell, an output positive terminal OUT1+ is connected with the voltage positive terminal, the output negative terminal OUT1+ is connected with the voltage negative terminal, the voltages of the input positive terminal OUT1+ and the output negative terminal OUT 1-can detect the state from 'off' to 'on' between the probe and the charge assembly shell, and a probe signal transfer box (4) sends a level signal between the input positive terminal OUT1+ and the output negative terminal OUT1+ to the dynamic strain gauge.
4. The system for measuring the burning rate and the detonation velocity of the modular explosives and powders according to claim 1, characterized in that the packaging body (21) is a resin glue condensate, a glass powder seal or a thermoplastic clinker.
5. The modular ignition and explosive burning rate measuring system according to claim 1, wherein the ignition assembly comprises a partition plate igniter and an ignition head, the partition plate igniter comprises a partition plate shell (7), an input explosive (8), a primary output explosive (9) and a secondary output explosive (10), the ignition head comprises an ignition bridge wire (11) and a tested explosive (12), the ignition bridge wire (11) of the ignition head generates heat after receiving externally input direct current electric energy, the tested explosive (12) is ignited, the tested explosive (12) detonates the input explosive (8) in the partition plate igniter, then the primary output explosive (9) and the secondary output explosive (10) are gradually detonated, and the tested explosive in the explosive assembly is finally detonated.
6. The system for measuring the burning rate and the detonation velocity of the modular explosives and powders as claimed in claim 3, characterized in that the explosives and powders to be measured are trinitroresorcinol lead.
7. The system for measuring the burning rate and the detonation velocity of the modular explosives and powders as claimed in claim 1, characterized by further comprising a plug (18), wherein the plug (18) is used for replacing a probe assembly during pressing, is in sealing fit with the charging measuring hole, and is connected with the plug (18) to be in full contact with the formed tested explosives and powders without gaps.
8. The system of claim 2, wherein the dynamic strain gauge has a sampling frequency of at least 200 MHz.
9. The system for measuring the burning rate and the detonation velocity of the modular explosives and powders according to claim 1, characterized in that the range of the gap between the end surface of the probe (20) and the formed explosive and powder to be measured is 0.5-1 mm.
10. The system for measuring the burning rate and the detonation velocity of the modular explosives and powders as claimed in claim 1, characterized in that the probe assembly and the charging assembly are sealed by an O-shaped sealing ring.
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| CN201810997484.XA CN109406748B (en) | 2018-08-29 | 2018-08-29 | Modular explosive burning speed and detonation velocity measuring system |
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| CN110568217B (en) * | 2019-09-09 | 2021-11-23 | 西安近代化学研究所 | Device and method for testing propagation speed of combustion-detonation wave front |
| CN110778418B (en) * | 2019-09-27 | 2021-12-07 | 上海新力动力设备研究所 | Fixed protective cover of electric ignition head |
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