CN103018312B - Explosive detonation property testing system under pulse high voltage and tested explosive loading part - Google Patents
Explosive detonation property testing system under pulse high voltage and tested explosive loading part Download PDFInfo
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- CN103018312B CN103018312B CN201210563674.3A CN201210563674A CN103018312B CN 103018312 B CN103018312 B CN 103018312B CN 201210563674 A CN201210563674 A CN 201210563674A CN 103018312 B CN103018312 B CN 103018312B
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Abstract
The invention relates to an explosive detonation property testing system under a pulse high voltage and a tested explosive loading part. The microseond-stage pulse high voltage of the required pulse width is generated by a capacitive energy storage and charging unit and a pulse width control unit, and applied to the tested explosive loading part; then, a tested explosive is ignited by an ignition and explosion propagation unit in time sequence; and finally the high voltage resistance, the time sequence ignition stability, the detonation output property and the like of the tested explosive are measured by utilizing a detonating velocity and detonation voltage testing unit and a high voltage resistant testing unit under the microseond-stage pulse high voltage condition of the required pulse width. The explosive detonation property testing system and the tested explosive loading part are applicable to the explosive detonation property testing under the pulse high voltage, and have the characteristics of low cost, simple structure, adjustable pulse width and the like.
Description
Technical field
The invention belongs to Pulse Power Techniques and explosive detonation characteristic field tests, being specifically related to explosive detonation characteristic test macro and tested explosive loading parts under a kind of pulse high-voltage, is the device that can produce Microsecond grade pulse high-voltage.
Background technology
In technical field of pulse power, particularly firing pulse power technology aspect, often need to use high explosive, and under making it be in the effect of pulse high-voltage, require that this explosive can not detonate because of pulse high-voltage before normal work in false triggering, and detonation process and the parameter such as explosion velocity and detonation pressure be not also by the impact of pulse high-voltage.Typical use object is explosive magnetic compression generator, high voltage explosion switch etc.
Explosive magnetic compression generator (MFCG) is a kind of pulse current multiplying arrangement according to the design of magnetic field freezing effect.The loop that it utilizes the chemical energy of explosive to drive solenoid, armature etc. to be formed is out of shape rapidly, compression magnetic field work done, and make loop inductance reduction, electric current increase, the chemical energy of explosive is the electromagnetic energy in load the most at last simultaneously.Explosive magnetic compression generator can be used as electromagnetic launcher, plasma focus, high-power electromagnetic radiation, laser instrument, generation high-intensity magnetic field power supply and be used as excitation diode thus produce the power supply etc. of high current charged particle beam.In addition, because its single uses, mainly in High energy electromagnetic weapon, high-power pulse source is used as.Wherein the quality of explosive detonation property under pulse high-voltage will directly affect the output performance of MFCG, and therefore correlated performance detects most important.
And in explosive detonation characteristic test, the explosion velocity of explosive and detonation pressure are the most important parameters determining explosive detonation characteristic, current relevant test method comparative maturity, have also been obtained and apply widely.Explosion velocity is measured and is usually adopted the electrical resistivity survey skill of handling needles, and the measurement of detonation pressure adopts manganin piezoresistive method usually.
At present, the method for explosive detonation characteristic test under pulse high-voltage still do not published and device, and the main DC break down voltage equipment such as voltage resistant instrument that rely on of conventional high voltage capability test complete, but be difficult to fine adjustment because relevant device produces high-tension pulse width, and not easily mutually mate use with explosive detonation characteristic method of testing, therefore the difficulty of test being applied to firing pulse power technology aspect is larger, precision is not high, the requirement tested explosive detonation characteristic under cannot meeting pulse high-voltage condition.
Summary of the invention
The technical matters solved
In order to avoid the deficiencies in the prior art part, the present invention proposes explosive detonation characteristic test macro and tested explosive loading parts under a kind of pulse high-voltage, solves the difficult problem existed in above-mentioned prior art.
Technical scheme
A kind of tested explosive loading parts, is characterized in that comprising primacord fuse connecting hole 1, Hi-pot test flat board 2, high-field electrode 3, epoxy resin 4, first trigger probe 5, second trigger probe 6, the 3rd trigger probe 7, nylon outer shell 8, lucite spacer 9, teflon limit lid 12, teflon shell 13, low-field electrode 14, low voltage experiment flat board 15, manganese-copper piezoresistance sensor 18 and plexiglass base plate 11; The axis of teflon shell 13 is provided with a rectangular through-hole, and rectangular through-hole is divided into two sections; Wherein one section of relative two plane is respectively equipped with Hi-pot test dull and stereotyped 2 and low voltage experiment flat board 15, end face is provided with teflon limit lid 12, and the center of teflon limit lid 12 is provided with primacord fuse connecting hole 1; Another section is provided with three equal grooves of spacing, and end face is provided with manganese-copper piezoresistance sensor 18 and plexiglass base plate 11; The outside of teflon shell 13 is epoxy resin 4, and the outside of epoxy resin 4 is nylon outer shell 8; High-field electrode 3 is connected on Hi-pot test flat board 2, and its lead-in wire is through outside epoxy resin 4 to nylon outer shell 8, and low-field electrode 14 is connected on low voltage experiment flat board 15, and its lead-in wire is through outside epoxy resin 4 to nylon outer shell 8; First trigger probe 5, second trigger probe 6 and the 3rd trigger probe 7 are placed in rectangular through-hole by three grooves successively by center, and insert on explosive tested in rectangular through-hole, and the lead-in wire of three trigger probe is through outside epoxy resin 4 to nylon outer shell 8.
Adopt an explosive detonation characteristic test macro under the pulse high-voltage of described tested explosive loading parts, it is characterized in that comprising capacitance energy storage and charhing unit, blast synchro switch, initiator, detonator, the first primacord fuse, blast shunt, the second primacord fuse, the tested explosive loading parts of the 3rd primacord fuse, pulse forming network, pulsed constant current supply and the first oscillograph; Test macro annexation is: initiator, detonator and the first primacord fuse sequential series, and the output of the first primacord fuse connects blast shunt, output parallel join second primacord fuse of blast shunt and the 3rd primacord fuse; Second primacord fuse what is called exports and controls blast synchro switch, and the high-field electrode of blast synchro switch input end connects the high-voltage output end of capacitance energy storage and charhing unit, and the high-field electrode of blast synchro switch output terminal connects the high-field electrode 3 of tested explosive loading parts; The output terminal of the 3rd primacord fuse controls tested explosive by the primacord fuse connecting hole 1 of tested explosive loading parts, low-field electrode 14 ground connection of tested explosive loading parts, first trigger probe 5 is connected pulse forming network with the output terminal of the second trigger probe 6, and the output of pulse forming network connects the first oscillograph; 3rd trigger probe 7 gating pulse constant current source of tested explosive loading parts provides constant current signal for the manganese-copper piezoresistance sensor 15 of tested explosive loading parts, and the signal output part of manganese-copper piezoresistance sensor 15 connects the first oscillograph.
The input end of blast synchro switch also connects the second oscillograph by resitstance voltage divider.
Described capacitance energy storage and charhing unit comprise energy-storage capacitor, power supply, HVDC converter, the first current-limiting resistance and current-limiting resistance and the second current-limiting resistance; Power supply, HVDC converter, the first current-limiting resistance and energy-storage capacitor sequential series ground connection form tank circuit, and energy-storage capacitor connects the high voltage input terminal of blast synchro switch by the second current-limiting resistance.
Described blast synchro switch comprises primacord fuse connecting hole 19, first switch electrode 20, first nylon sleeve 21, second nylon sleeve 22, nylon limit lid 23, copper pipe 24, second switch electrode 25 and main blasting charge 26; First nylon sleeve 21 and the second nylon sleeve 22 are mutually inlayed and form a cylinder, second nylon sleeve 22 is groove structure, first nylon sleeve 21 is provided with nylon limit lid 23, the primacord fuse connecting hole 19 that the center that nylon limit covers 23 is provided with, the center of cylinder is provided with main blasting charge 26, and wherein one end is connected with primacord fuse connecting hole 19; The outside of main blasting charge 26 is provided with copper pipe 24, first switch electrode 20 is connected with copper pipe 24 through the first nylon sleeve 21, second switch electrode 25 is located at the outer ring of copper pipe 24 for ring-type, the lead-in wire being provided with the first nylon sleeve 21, two switch electrodes of insulation between second switch electrode 25 and copper pipe 24 is worn to the first nylon sleeve 21; Described first switch electrode 20 is the high-field electrode of input end, and described second switch electrode 25 is the high-field electrode of output terminal.
Described second primacord fuse and the 3rd primacord fuse are carried on tested explosive and form high voltage pulse, and high voltage pulse width depends on primacord fuse explosion velocity v, the second primacord fuse length l
1with the 3rd primacord fuse length l
2, meet relational expression t=l
2-l
1/ v, wherein t is the high voltage pulse width be carried on tested explosive.
Main working process of the present invention is as follows: first, utilizes capacitance energy storage and charhing unit to control energy-storage capacitor and is charged to given voltage value; Then pulse width control unit is utilized to be loaded on tested explosive loading parts by the high voltage of energy-storage capacitor, and accurate gating pulse width; And then utilize propagation of explosion unit sequential of detonating to detonate tested explosive; Explosion velocity detonation pressure test cell and high pressure resistant test cell is finally utilized to test withstand voltage, the performance index such as explosion velocity, detonation pressure of tested explosive.The high voltage performance of tested explosive can be drawn by above-mentioned test result, sequential detonates stability and detonation output performance etc.
Beneficial effect
Explosive detonation characteristic test macro and tested explosive loading parts under a kind of pulse high-voltage that the present invention proposes, the Microsecond grade pulse high-voltage being realized required pulse width by capacitance energy storage and charhing unit and pulse width control unit is produced, and be carried on tested explosive loading parts, then to be detonated tested explosive by propagation of explosion unit sequential of detonating, finally utilize explosion velocity detonation pressure test cell and high pressure resistant test cell to the high voltage performance of tested explosive under the Microsecond grade pulse high-voltage condition measuring required pulse width, sequential is detonated stability and detonation output performance etc.
The present invention is that a set of Microsecond grade pulse high-voltage produces system, and the explosive detonation characteristic method of testing that ingenious combination is conventional, explosive detonation characteristic proving installation under the Microsecond grade pulse high-voltage providing a set of applicable firing pulse power technology field to apply.This device can measure the dielectric voltage withstand performance of tested powder charge under Microsecond grade pulse high-voltage condition, sequential detonates stability and detonation output performance.And have that cost is low, structure is simple, pulse width is adjustable, be applicable to the features such as Exploding test application, the requirement of firing pulse power technology and relevant detonation property test high pressure resistant to explosive can be met completely.
Under the present invention is applicable to being applied to pulse high-voltage, explosive detonation characteristic is tested, and has the features such as cost is low, structure is simple, pulse width is adjustable.Compared with prior art, the invention has the beneficial effects as follows: the 1 dielectric voltage withstand performance that can be used for detecting tested explosive under Microsecond grade pulse high-voltage condition; 2 can be used for detecting the sequential of tested explosive under Microsecond grade pulse high-voltage condition detonates stability; The 3 detonation output performances that can be used for detecting tested explosive under Microsecond grade pulse high-voltage condition.
Accompanying drawing explanation
Fig. 1: explosive detonation characteristic proving installation fundamental block diagram under pulse high-voltage of the present invention;
Fig. 2: the detailed composition frame chart of explosive detonation characteristic proving installation under pulse high-voltage of the present invention;
Fig. 3: tested explosive loading modular construction figure of the present invention;
1-the three primacord fuse connecting hole; 2-Hi-pot test is dull and stereotyped; 3-high-field electrode; 4-epoxy resin; 5-the first trigger probe; 6-the second trigger probe; 7-the three trigger probe; 8-nylon outer shell; 9-lucite spacer; 10-sensor connects oscillographic lead-in wire; 11-plexiglass base plate; 12-teflon limit is covered; 13-teflon shell; 14-low-field electrode and lead-in wire; 15-low voltage experiment is dull and stereotyped; 16-tested explosive; 17-sensor connects the lead-in wire of pulsed constant current supply; 18-manganese-copper piezoresistance sensor;
Fig. 4: the blast diversion structure figure of the embodiment of the present invention;
Fig. 5: the blast synchro switch structural drawing of the embodiment of the present invention;
19-the second primacord fuse connecting hole; 20-the first switch electrode; 21-the first nylon sleeve; 22-the second nylon sleeve; 23-nylon limit is covered; 24-copper pipe; 25-second switch electrode; 26-main blasting charge.
Embodiment
Now in conjunction with the embodiments, the invention will be further described for accompanying drawing:
Figure 2 shows that the composition frame chart of the embodiment of the present invention, comprise capacitance energy storage and charhing unit, blast synchro switch, initiator, detonator, the first primacord fuse, explode shunt, the second primacord fuse, the tested explosive loading parts of the 3rd primacord fuse, pulse forming network, pulsed constant current supply and the first oscillograph; Power supply, HVDC converter, current-limiting resistance etc. are utilized to realize controlling the charging of energy-storage capacitor; Initiator, detonator, primacord fuse, blast shunt, blast synchro switch etc. is utilized to realize tested explosive initiation and be carried in the high voltage pulse width control system in tested Explosive Parts; Utilize the test that resitstance voltage divider, manganese-copper piezoresistance sensor, pulsed constant current supply, trigger probe, pulse forming network, oscillograph etc. realize dielectric voltage withstand performance to tested Explosive Parts, sequential detonates stability and detonation output parameter.
Capacitance energy storage wherein and charhing unit comprise energy-storage capacitor, power supply, HVDC converter, the first current-limiting resistance and current-limiting resistance 2 and the second current-limiting resistance; Power supply, HVDC converter, the first current-limiting resistance and energy-storage capacitor sequential series ground connection form tank circuit, and energy-storage capacitor connects the high voltage input terminal of blast synchro switch by the second current-limiting resistance.This unit is mainly used in the high voltage realizing producing more than 40kV on energy-storage capacitor.Its main process is: first provide lower initial voltage by power supply, the high voltage of more than 40kV is produced after HVDC converter, and powered to energy-storage capacitor by the 1st current-limiting resistance, thus the voltage on energy-storage capacitor is charged to more than 40kV, eventually through the 2nd current-limiting resistance, high voltage is carried on blast synchro switch.
Tested explosive loading parts wherein, is characterized in that comprising primacord fuse connecting hole 1, Hi-pot test flat board 2, high-field electrode 3, epoxy resin 4, first trigger probe 5, second trigger probe 6, the 3rd trigger probe 7, nylon outer shell 8, lucite spacer 9, teflon limit lid 12, teflon shell 13, low-field electrode 14, low voltage experiment flat board 15, manganese-copper piezoresistance sensor 18 and plexiglass base plate 11; The axis of teflon shell 13 is provided with a rectangular through-hole, and rectangular through-hole is divided into two sections; Wherein one section of relative two plane is respectively equipped with Hi-pot test dull and stereotyped 2 and low voltage experiment flat board 15, end face is provided with teflon limit lid 12, and the center of teflon limit lid 12 is provided with primacord fuse connecting hole 1; Another section is provided with three equal grooves of spacing, and end face is provided with manganese-copper piezoresistance sensor 18 and plexiglass base plate 11; The outside of teflon shell 13 is epoxy resin 4, and the outside of epoxy resin 4 is nylon outer shell 8; High-field electrode 3 is connected on Hi-pot test flat board 2, and its lead-in wire is through outside epoxy resin 4 to nylon outer shell 8, and low-field electrode 14 is connected on low voltage experiment flat board 15, and its lead-in wire is through outside epoxy resin 4 to nylon outer shell 8; First trigger probe 5, second trigger probe 6 and the 3rd trigger probe 7 are placed in rectangular through-hole by three grooves successively by center, and insert on explosive tested in rectangular through-hole, and the lead-in wire of three trigger probe is through outside epoxy resin 4 to nylon outer shell 8.
The measurement such as detonation rate, detonation pressure of tested explosive under these parts are mainly used in realizing pulse high-voltage, and then under drawing Microsecond grade pulse high-voltage condition, the sequential of tested powder charge parts is detonated stability and detonation output performance.Pulse high-voltage is carried on tested explosive, and ensures pulse high-voltage and exterior insulation.Pulse high-voltage is loaded into tested explosive upper and lower end face by high-field electrode, low-field electrode, Hi-pot test is dull and stereotyped, low voltage experiment is dull and stereotyped etc., teflon shell, epoxy resin and nylon outer shell etc. is adopted to realize insulation-encapsulated, to meet external high pressure insulating requirements outside tested explosive.Be illustrated in figure 3 the tested explosive loading modular construction figure of our design.Its high-low pressure electrode and test slab adopt screw connection metal slab construction, and the rear end of tested Explosive Parts adopts lucite spacer structure, are convenient to export detonation pressure and measure.
The synchro switch that wherein explodes comprises primacord fuse connecting hole 19, first switch electrode 20, first nylon sleeve 21, second nylon sleeve 22, nylon limit lid 23, copper pipe 24, second switch electrode 25 and main blasting charge 26; First nylon sleeve 21 and the second nylon sleeve 22 are mutually inlayed and form a cylinder, second nylon sleeve 22 is groove structure, first nylon sleeve 21 is provided with nylon limit lid 23, the primacord fuse connecting hole 19 that the center that nylon limit covers 23 is provided with, the center of cylinder is provided with main blasting charge 26, and wherein one end is connected with primacord fuse connecting hole 19; The outside of main blasting charge 26 is provided with copper pipe 24, first switch electrode 20 is connected with copper pipe 24 through the first nylon sleeve 21, second switch electrode 25 is located at the outer ring of copper pipe 24 for ring-type, the lead-in wire being provided with the first nylon sleeve 21, two switch electrodes of insulation between second switch electrode 25 and copper pipe 24 is worn to the first nylon sleeve 21; Described first switch electrode 20 is the high-field electrode of input end, and described second switch electrode 25 is the high-field electrode of output terminal.
Blast synchro switch can realize under high voltage condition, utilize primacord fuse to transmit detonation wave and drive it to connect, and conducting required time can accurately control.Be illustrated in figure 5 blast synchro switch structural drawing.Adopt the second primacord fuse to realize main blasting charge to detonate, the first switch electrode is adopted to connect outside tested Explosive Parts, adopt current-limiting resistance and the capacitor energy of second switch Electrode connection outside, nylon sleeve and nylon limit lid are mainly used in High-Voltage Insulation, copper pipe connects the first switch electrode, be mainly used in smashing nylon insulation course under main blasting charge drives, make the first and second switch electrodes and conducting.Its main working process is: the detonation wave of the second primacord fuse transmission drives main blasting charge to detonate, and then drives copper pipe to expand, and smashes the nylon insulation course between copper pipe and switch electrode, thus realizes the conducting of the first and second switch electrodes.
The shunt that wherein explodes can realize the input of the detonation wave of single channel primacord fuse, and the detonation wave of two-way or multichannel primacord fuse exports simultaneously.Be illustrated in figure 4 the structural drawing of blast shunt, its main part adopts steel or iron structure, with the normal delivery providing enough intensity to ensure detonation wave in primacord fuse.Open threaded hole in three directions simultaneously, can teflon sleeve be connected, to facilitate the access of primacord fuse.Wherein the perforate of upper surface is mainly used in connecting single channel and inputs the first primacord fuse, and the perforate of left and right end face is mainly used in connecting doubleway output second and the 3rd primacord fuse.
The annexation of native system is: initiator, detonator and the first primacord fuse sequential series, and the output of the first primacord fuse connects blast shunt, output parallel join second primacord fuse of blast shunt and the 3rd primacord fuse; Second primacord fuse what is called exports and controls blast synchro switch, and the high-field electrode of blast synchro switch input end connects the high-voltage output end of capacitance energy storage and charhing unit, and the high-field electrode of blast synchro switch output terminal connects the high-field electrode 3 of tested explosive loading parts; The output terminal of the 3rd primacord fuse controls tested explosive by the primacord fuse connecting hole 1 of tested explosive loading parts, low-field electrode 12 ground connection of tested explosive loading parts, first trigger probe 5 is connected pulse forming network with the output terminal of the second trigger probe 6, and the output of pulse forming network connects the first oscillograph; 3rd trigger probe 7 gating pulse constant current source of tested explosive loading parts provides constant current signal for the manganese-copper piezoresistance sensor 15 of tested explosive loading parts, and the output terminal of manganese-copper piezoresistance sensor 15 connects the first oscillograph.
Specific works process is as follows: first, capacitance energy storage and charhing unit are started working, utilize power supply, HVDC converter, the first current-limiting resistance etc. that energy-storage capacitor is charged to given voltage value, and by the second current-limiting resistance, high voltage is carried on blast synchro switch.Then, pulse width control unit and the propagation of explosion unit that detonates are started working, initiator controls blasting cap initiation, and then ignite the first primacord fuse, by blast shunt the detonation wave that the first primacord fuse inputs is converted to the second primacord fuse and the 3rd primacord fuse exports detonation wave simultaneously, wherein the second primacord fuse drives blast synchro switch to close, and is carried in by the high voltage of energy-storage capacitor on tested explosive loading parts; 3rd primacord fuse is connected directly between on tested explosive loading parts, realizes detonating of tested explosive.And can accurately control respectively to be set as l respectively due to the length of the second primacord fuse and the 3rd primacord fuse
1and l
2, the explosion velocity v of primacord fuse is relatively stable, therefore utilizes the synchro switch that can control to explode of the length difference between the second primacord fuse and the 3rd primacord fuse to close time interval t=l between tested explosive initiation two time points
2-l
1/ v, is also the pulse width being carried in pulse high-voltage on tested explosive.Finally, explosion velocity detonation pressure test cell and high pressure resistant test cell are started working, and utilize the first trigger probe and pulse forming network etc. to measure detonation rate after tested explosive initiation; Manganese-copper piezoresistance sensor, pulsed constant current supply, the second trigger probe etc. is utilized to measure the change curve of detonation pressure after tested explosive initiation; Utilize in the whole process before and after the tested explosive initiation of the measurement such as resitstance voltage divider and the second oscillograph the voltage change curve be loaded on tested explosive.According to above-mentioned test result, and contrast that tested explosive typical detonation property parameter can draw the high voltage performance of tested explosive, sequential detonates stability and detonation output performance etc.
Control primer detonator by initiator in the present invention, detonator and then ignition the first primacord fuse realize propagation of explosion, and utilize primacord fuse length can accurately control the propagation of explosion time, initiator can adopt Traditional project to detonate and use hand-held initiator.
Utilize the synchronous by-passing of blast shunt, the second primacord fuse and the 3rd primacord fuse realization to the first primacord fuse.Wherein the second primacord fuse connects blast synchro switch, is expanded by the explosive in the second primacord fuse, and drive blast synchro switch to close, switch closes required time can Accurate Measurement.After switch is closed, high voltage is carried on tested explosive loading parts by the energy-storage capacitor be connected with the second current-limiting resistance; And the tested explosive that detonates after the t time delay of the 3rd primacord fuse elapsed time.Owing to there is electric conductivity in explosive detonation process, therefore explosive detonated after close to short-circuit condition, the high voltage pulse be now loaded on tested explosive loading parts blocks.And by testing and calculating the parameters such as blast synchro switch closure time, tested explosive initiation time, the explosion velocity of Rational choice primacord fuse, and the length l of the second primacord fuse
1with the length l of the 3rd primacord fuse
2, utilize formula t=l
2-l
1/ v can realize the accurate control to high voltage pulse width t.
Described tested explosive detonation velocity survey mainly utilizes the realization such as the 1st trigger probe, pulse forming network, the 1st oscillograph.Two groups of trigger probe are carried in tested explosive side respectively, and determine the distance between two groups of probes, pulse forming network is connected to trigger probe end.When tested explosive detonation is through one group of trigger probe, the detonation product due to explosive has certain electric conductivity, and this group probe is connected, and connected pulse forming network is by generation pulse signal.Pulse signal interval corresponding when being connected by the first oscillograph recording two groups of probes, and then measure the detonation rate of explosive.
Described tested explosive detonation pressure survey mainly utilizes the realization such as manganese-copper piezoresistance sensor, pulsed constant current supply, the second trigger probe, the first oscillograph, manganese-copper piezoresistance sensor is contained in tested explosive end by the lucite spacer on tested explosive loading parts, and its two lateral electrode connects pulsed constant current supply and oscillograph respectively.Second trigger probe is carried in the middle part of tested explosive, and connect pulsed constant current supply trigger end, after explosive initiation, through trigger probe, probe conducting, thus trigger pulse constant current source starts power supply to manganese-copper piezoresistance sensor, when detonation is transferred to tested explosive end, when producing output pressure by lucite spacer on manganese-copper piezoresistance sensor, by oscillograph recording pressure curve, draw the detonation pressure of explosive.
High pressure resistant test cell is primarily of resitstance voltage divider and the second oscillograph composition, and the dielectric voltage withstand performance that this unit is mainly used in realizing being carried in pulse high-voltage waveform on tested explosive and tested explosive is measured.Be connected to by the high-voltage probe of resitstance voltage divider between blast synchro switch and tested explosive loading parts, after the conducting of blast synchro switch, the high voltage of energy-storage capacitor is carried on tested explosive loading parts by the second current-limiting resistance, blast synchro switch.When after tested explosive initiation, because detonation product has certain conductivity, magnitude of voltage declines rapidly, this process can utilize resitstance voltage divider and the second oscillograph recording, usually 100 μ s are less than its T.T., according to the voltage waveform change that oscillograph records, whether deducibility goes out tested explosive high voltage performance and meets the requirements, thus realizes measuring tested explosive dielectric voltage withstand performance.
Claims (5)
1. an explosive detonation characteristic test macro under pulse high-voltage, is characterized in that comprising capacitance energy storage and charhing unit, blast synchro switch, initiator, detonator, the first primacord fuse, explodes shunt, the second primacord fuse, the 3rd primacord fuse, tested explosive loading parts, pulse forming network, pulsed constant current supply and the first oscillograph, test macro annexation is: initiator, detonator and the first primacord fuse sequential series, and the output of the first primacord fuse connects blast shunt, output parallel join second primacord fuse of blast shunt and the 3rd primacord fuse, the output of the second primacord fuse controls blast synchro switch, the high-field electrode of blast synchro switch input end connects the high-voltage output end of capacitance energy storage and charhing unit, and the high-field electrode of blast synchro switch output terminal connects the high-field electrode (3) of tested explosive loading parts, the output terminal of the 3rd primacord fuse controls tested explosive by the primacord fuse connecting hole (1) of tested explosive loading parts, low-field electrode (12) ground connection of tested explosive loading parts, first trigger probe (5) is connected pulse forming network with the output terminal of the second trigger probe (6), and the output of pulse forming network connects the first oscillograph, 3rd trigger probe (7) gating pulse constant current source of tested explosive loading parts is that the manganese-copper piezoresistance sensor (18) of tested explosive loading parts provides constant current signal, and the output terminal of manganese-copper piezoresistance sensor (18) connects the first oscillograph, described tested explosive loading parts comprise primacord fuse connecting hole (1), Hi-pot test flat board (2), high-field electrode (3), epoxy resin (4), first trigger probe (5), second trigger probe (6), 3rd trigger probe (7), nylon outer shell (8), lucite spacer (9), teflon limit lid (12), teflon shell (13), low-field electrode (14), low voltage experiment flat board (15), manganese-copper piezoresistance sensor (18) and plexiglass base plate (11), the axis of teflon shell (13) is provided with a rectangular through-hole, and rectangular through-hole is divided into two sections, wherein one section of relative two plane is respectively equipped with Hi-pot test flat board (2) and low voltage experiment flat board (15), end face is provided with teflon limit lid (12), and the center on teflon limit lid (12) is provided with primacord fuse connecting hole (1), another section is provided with three equal grooves of spacing, and end face is provided with manganese-copper piezoresistance sensor (18) and plexiglass base plate (11), the outside of teflon shell (13) is epoxy resin (4), and the outside of epoxy resin (4) is nylon outer shell (8), high-field electrode (3) is connected on Hi-pot test flat board (2), its lead-in wire is through outside epoxy resin (4) to nylon outer shell (8), low-field electrode (14) is connected on low voltage experiment flat board (15), and its lead-in wire is through outside epoxy resin (4) to nylon outer shell (8), first trigger probe (5), the second trigger probe (6) and the 3rd trigger probe (7) are placed in rectangular through-hole by three grooves by center successively, and inserting on explosive tested in rectangular through-hole, the lead-in wire of three trigger probe is through outside epoxy resin (4) to nylon outer shell (8).
2. test macro according to claim 1, is characterized in that: the input end of blast synchro switch also connects the second oscillograph by resitstance voltage divider.
3. test macro according to claim 1, is characterized in that: described capacitance energy storage and charhing unit comprise energy-storage capacitor, power supply, HVDC converter, the first current-limiting resistance and the second current-limiting resistance; Power supply, HVDC converter, the first current-limiting resistance and energy-storage capacitor sequential series ground connection form tank circuit, and energy-storage capacitor connects the high voltage input terminal of blast synchro switch by the second current-limiting resistance.
4. test macro according to claim 1, is characterized in that: described blast synchro switch comprises primacord fuse connecting hole (19), the first switch electrode (20), the first nylon sleeve (21), the second nylon sleeve (22), nylon limit lid (23), copper pipe (24), second switch electrode (25) and main blasting charge (26); First nylon sleeve (21) and the second nylon sleeve (22) are mutually inlayed and form a cylinder, second nylon sleeve (22) is groove structure, first nylon sleeve (21) is provided with nylon limit lid (23), the primacord fuse connecting hole (19) that the center that (23) are covered on nylon limit is provided with, the center of cylinder is provided with main blasting charge (26), and wherein one end is connected with primacord fuse connecting hole (19); The outside of main blasting charge (26) is provided with copper pipe (24), first switch electrode (20) is connected with copper pipe (24) through the first nylon sleeve (21), second switch electrode (25) is located at the outer ring of copper pipe (24) for ring-type, be provided with first nylon sleeve (21) of insulation between second switch electrode (25) and copper pipe (24), the lead-in wire of two switch electrodes is worn to the first nylon sleeve (21); The high-field electrode that described first switch electrode (20) is input end, the high-field electrode that described second switch electrode (25) is output terminal.
5. test macro according to claim 1, is characterized in that: described second primacord fuse and the 3rd primacord fuse are carried on tested explosive and form high voltage pulse, and high voltage pulse width depends on primacord fuse explosion velocity v, the second primacord fuse length l
1with the 3rd primacord fuse length l
2, meet relational expression t=(l
2-l
1)/v, wherein t is the high voltage pulse width be carried on tested explosive.
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| CN201210563674.3A CN103018312B (en) | 2012-12-23 | 2012-12-23 | Explosive detonation property testing system under pulse high voltage and tested explosive loading part |
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| CN201210563674.3A CN103018312B (en) | 2012-12-23 | 2012-12-23 | Explosive detonation property testing system under pulse high voltage and tested explosive loading part |
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| CN103018312B true CN103018312B (en) | 2014-12-31 |
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| CN104764899B (en) * | 2015-03-23 | 2017-08-15 | 安徽理工大学 | A kind of explosion velocity of explosive method of testing |
| CN104965098A (en) * | 2015-07-03 | 2015-10-07 | 湖北东神天神实业有限公司 | Quick mounting apparatus for explosive explosion velocity probe |
| CN105043634B (en) * | 2015-07-09 | 2018-02-16 | 大连理工大学 | The measuring method of explosive detonation pressure in a kind of blasthole |
| CN105486597B (en) * | 2015-11-23 | 2018-01-05 | 中国人民解放军理工大学 | A kind of pulse shaping networking of high-pressure metal appendix crack growth test system |
| CN107944145B (en) * | 2017-11-28 | 2021-11-26 | 北京理工大学 | Design method of detonation drive type launching device for fragment impact test |
| CN108956932A (en) * | 2018-07-12 | 2018-12-07 | 宏大爆破有限公司 | A kind of continuous measurement explosion velocity device and method |
| CN110715583B (en) * | 2019-10-12 | 2021-02-09 | 西安交通大学 | Microscale explosive loading and explosion velocity testing system |
| CN110926281B (en) * | 2019-12-19 | 2021-02-02 | 西安交通大学 | Micro-scale explosive loading detonation pressure and detonation velocity testing system based on MEMS pressure conduction probe |
| CN113030180B (en) * | 2021-04-15 | 2022-05-13 | 中国工程物理研究院激光聚变研究中心 | Explosive overpressure detonation device and performance testing method |
| CN114414132A (en) * | 2021-11-30 | 2022-04-29 | 中煤科工集团淮北爆破技术研究院有限公司 | Underwater explosion-based capacitive transient pressure testing device and testing method thereof |
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| CN102033988B (en) * | 2010-11-30 | 2012-11-14 | 南京理工大学 | Fuzzy assessment method for explosive detonation performance |
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