CN108426976A - A kind of comprehensive simultaneity evaluation method of gun propellant charge igniting - Google Patents
A kind of comprehensive simultaneity evaluation method of gun propellant charge igniting Download PDFInfo
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- CN108426976A CN108426976A CN201810064087.7A CN201810064087A CN108426976A CN 108426976 A CN108426976 A CN 108426976A CN 201810064087 A CN201810064087 A CN 201810064087A CN 108426976 A CN108426976 A CN 108426976A
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- sensor
- coyote hole
- propellant charge
- gun propellant
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
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Abstract
The invention discloses a kind of comprehensive simultaneity evaluation methods of gun propellant charge igniting, according to coyote hole shape and charge constitution, make the sensor stand of fixed sensor, sensor is fixed on sensor stand, the level-one of sensor, which is welded on sensor stand to be put into coyote hole and be in close contact with coyote hole, is used as signal wire level-one, and another lead of sensor is connected with the insulated enclosure electrode on coyote hole plug and constitutes another pole of signal wire；Gun propellant charge is packed into coyote hole；According to bullet squeeze pressure and powder charge area ignition theoretical pressure size, chooses pressure release fragmentation and install；Test of fighting is put, analysis stimulus is with the comprehensive simultaneity of the igniting for evaluating gun propellant charge.The present invention efficiently solves the test problem of gun propellant charge ignition results (simultaneously, comprehensively), and solve the key technical problem that evaluation gun propellant charge igniting design lacks scientific and effective method, it can be designed for gun propellant charge and feasible test and evaluation means are provided.
Description
Technical field
The invention belongs to explosive wastewater technical fields, relate generally to a kind of gun propellant charge evaluation method.
Background technology
Weapons with pipes is still the main equipment on battlefield at present, and weapons with pipes generally relies on gun propellant charge and provides transmitting
Kinetic energy designs the energy release process of controlled loading of explosive using gun propellant charge, it is made to complete shooting under the premise of emission security
Task meets gun propellant charge and ballistic design index.
Gun propellant charge comprehensive while igniting refer to after gun propellant charge receives energy caused by ignition system burning,
The initial combustion face of every propellant powder on each geometric point of its charge constitution reaches ignition condition and burns simultaneously simultaneously.Hair
Penetrate the comprehensive of medicine powder charge at the same igniting be firearms inner trajectory and powder charge design premise, and gun propellant charge is not by comprehensively simultaneously
Igniting is also to lead to abnormal trajectory phenomenon (decline of trajectory index, pressure initial velocity abnormality etc.) or even the main inducing of bore premature.Therefore,
The light a fire test of comprehensive simultaneity of gun propellant charge is particularly important.Gun propellant charge is lighted a fire the test of comprehensive simultaneity at present
Method mainly has multipoint pressure measure method, transparent ignition simulating device method and range firing.
Multipoint pressure measure method refers in the axially mounted multiple pressure sensors of powder charge coyote hole side wall, and fiery process dress is passed for monitoring point
Medicine coyote hole axial compressive force situation of change.Although this method can reflect that coyote hole pressure is axially increasing the synchronism changed, according to
To pressure versus time curve result judge coyote hole whether there are the uneven of axial compressive force fluctuation and pressure axial
Property.Pressure is the macro manifestations of powder gases molecule, at elevated pressures the mobility with high speed, if the filling of powder charge coyote hole is close
Degree is not high, then coyote hole axial compressive force is coincide substantially, it is difficult to judge that gun propellant charge is lighted a fire comprehensive simultaneity according to pressure signal
It is good and bad.
Transparent ignition simulating device method refers to observes powder charge ignition combustion event using transparent combustion chamber, analyzes gun propellant charge
Point passes comprehensive simultaneity of fire.But since the making material of combustion chamber is only limitted to the transparent materials such as plastics or glass, pressure resistance
Limited strength is not suitable for high loading density powder charge and lights a fire the test of comprehensive simultaneity, and there are potential dangers for experiment process.
Range firing refers to through Artillery experiment in groups, judges that certain powder charge igniting is complete by the repetition stability of gun pressure and initial velocity
The quality of face simultaneity.It is generally acknowledged that gun pressure and initial velocity jump difference less, then the comprehensive simultaneity of powder charge igniting is preferable, is suitble to the dress
Medicine structure.This method has the following defects：1) repeatability, the consistency shot by weapons with pipes examine powder charge igniting to set indirectly
Effect is counted, whether has reached comprehensively while having lighted a fire without the really practical powder charge of grasp；2) for heavy caliber weapons with pipes, full bullet
Firing test cost is higher；3) know the real situation experiment danger greatly for initial explosion performance, have occurred and that multiple bombing bore accident.
Invention content
For overcome the deficiencies in the prior art or defect, the present invention one kind is provided being capable of the igniting of actual test gun propellant charge
Simultaneity, comprehensive method provide support and ensure for the safe to use and ballistic stability of gun propellant charge.
In order to solve the above technical problems, the device that test method provided by the invention uses includes coyote hole, sensor, sensing
Device holder, gun propellant charge, left plug, right plug, left plug and right plug are used to connect the weapons with pipes that coyote hole constitutes simulation
Coyote hole environment, and have the sealing of coyote hole and pressure-resistant function, coyote hole, left plug and right plug three are coordinated with helicitic texture to be fastened
Connection.Sensor is used to test the ignition signal of the multiple test points of coyote hole, and data are provided for the comprehensive simultaneity of evaluation powder charge igniting；
Specifically include following steps：
A, according to weapons with pipes coyote hole geometry, the sensor stand of fixed sensor is made, it is axial, radial in coyote hole
Multiple test points are set；Under the premise of sensor meets range, high temperature resistant, miniaturization instrument are preferentially used.According to ignition structure
Design, it is radial not necessarily at axle center, it is axial then meet coyote hole geometrical homogenization.The sensor includes thermocouple, photoelectric transfer
Sensor, sound transducer；Coyote hole axial direction test point is 3 groups or more, and radial test point is 2 points or more.
B, sensor is fixed on each test point of sensor stand；It is connected to sensor branch by one of its two leads
It puts up as a pole, sensor stand is in close contact after being packed into coyote hole with coyote hole wall；An other insulation for being connected to left plug is close
It seals on electrode and constitutes another pole of sensor.
C, according to weapons with pipes bullet squeeze pressure PIt squeezesTheoretical pressure P when lighting a fire simultaneously with powder charge comprehensivelyIt is theoretical, choose phase
Specification pressure release fragmentation is answered to be packed into pressure release fragmentation mechanism, pressure release fragmentation mechanism is assemblied on right plug；The maximum pressure resistance P of pressure release fragmentationIt is broken,
Pressure release fragmentation selection principle：PIt is broken=PIt squeezes+PIt is theoretical；The pressure release fragmentation of use reaches its maximum pressure resistance P in pressureIt is brokenWhen rupture pressure release, protect
End of certificate at experiment under the premise of improve the service life of coyote hole, and increase experiment safety.
By igniter assembly on left plug；Gun propellant charge is packed into coyote hole, and installs all components；Igniter work
Make, light gun propellant charge, sensor acquires signal, when pressure reaches the maximum pressure resistance of pressure release fragmentation described in step C in experiment
PIt is brokenWhen, pressure release fragmentation ruptures pressure release, off-test；Pass through the variation Conformance Assessment gun propellant charge of axial direction, radial signals
It lights a fire comprehensive simultaneity.
Beneficial effects of the present invention are embodied in the following aspects：
(1) in the present invention, multiple test points are set inside coyote hole, and test point is uniformly distributed in geometry, from structure
On ensure that ignition process omnibearing stereo test, facilitate deciding on evaluation powder charge comprehensive while ignition results.
(2) in the present invention, three-dimensional test point is set in coyote hole first, powder charge is designed according to powder charge then and is packed into
Coyote hole, Sensor Design are nearly free from influence to the ignition combustion event of powder charge, ensure that the true and reliable of test result.
(3) test method provided by the present invention, a lead of sensor, which is connected to sensor stand, becomes level-one,
Another lead is connected on the insulated enclosure electrode of left plug, and the sealing and signal for solving coyote hole inner sensor are drawn, into
One step ensure that the complete test of air-proof condition down-firing process signal.
(4) test method provided by the present invention makes experiment stop in such a way that pressure release fragmentation ruptures.It is completing
On the basis of test objective and data acquisition, since coyote hole pressure does not reach powder charge maximum combustion pressure to be measured, device ablation
Reduce, service life extends, and in addition test pressure, which declines to a great extent, improves experiment safety.
Description of the drawings
Fig. 1 is that point sensor, powder charge and igniting schematic layout pattern are tested in the present invention, 1- igniters, 2- insulated enclosure electricity
Pole, 3- coyote holes, 4- sensors, 5- gun propellant charges, 6- pressure release fragmentations mechanism, 7- sensor stands, the left plugs of 8-, the right sides 9- are stifled
Head.
Fig. 2 is the connection diagram of sensor and sensor stand and coyote hole plug.
Fig. 3 is insulating electrode schematic diagram, enameled wire centered on 2-1, and 2-2 is pressure spiral shell.
Fig. 4 is pressure release fragmentation structural scheme of mechanism, and 6-1 is pressure release fragmentation, and 6-2 is sealing metal washer, and 6-3 is fragmentation pressure
Spiral shell.
Specific implementation mode
Below in conjunction with the accompanying drawings and preferred embodiment the present invention is described in further detail.
Include coyote hole 3, sensor 4, gun propellant charge using device as shown in Figure 1, implementing the preferred embodiment of the present invention
5, sensor stand 7, left plug 8, right plug 9.Igniter 1 and connection sensor two-stage wiring are equipped on its left plug 8
The wherein insulated enclosure electrode 2 of level-one is equipped with pressure release fragmentation mechanism 6 on right plug 9.
Left plug 8 and right plug 9 are used to connect coyote hole 3 and constitute the weapons with pipes coyote hole environment of simulation, and have coyote hole
Sealing and pressure-resistant function, coyote hole 3, left plug 8 and right plug 9 are that PCrNiMoV steel makes, and three is tight with helicitic texture cooperation
It is solidly connected.Igniter 1 is installed, igniter 1 selects No. 23 electric shock fires in a stove before fuel is added, and fire in a stove before fuel is added the two poles of the earth lead to 30V direct currents, point on left plug 8
Firearm 1 is under fire, and gun propellant charge 5 is then lighted.Pressure release fragmentation mechanism 6 is installed, the pressure release fragmentation used exists on right plug 9
Pressure reaches its maximum pressure resistance PIt is brokenWhen rupture pressure release, ensure to complete to improve the service life of coyote hole under the premise of experiment, and increase
Add experiment safety.Sensor 4 selects platinum rhodium thermocouple, the ignition signal for testing more than 3 a test point of coyote hole to be filled for evaluation
Simultaneity provides data to snack made with traditional Chinese medicines fire comprehensively；Sensor 4 is fixed on each fulcrum of sensor stand 7, one biography of a fixed pivot
Sensor is fixed by welding manner, and wherein level-one sensor lead is welded on sensor stand 7 and is used as level-one, and in addition one
Grade lead is connected on the insulated enclosure electrode 2 of left plug 8.
Sensor stand 7 is made using the steel wire of diameter 3mm, and structure shown in Fig. 2 is made according to coyote hole structure size, axial
Equipped with 3 groups of test surfaces, each axial cross section is equipped with 3 fulcrums, is respectively stretched out before and after former and later two axial cross sections of holder 7 certain
On the one hand length is in close contact with the left plug 8 on 3 both sides of coyote hole and right plug 9, on the other hand ensure one as sensor 4
Grade can stablize output signal.Each fulcrum on Fig. 2 is connected with thermocouple sensor.
2 structure of insulated enclosure electrode is shown in that Fig. 3, center enameled wire 2-1 are fixed on cone centre bore, cone with fluid sealant
After being put into plug, is compressed with pressure spiral shell 2-2 and ensure sealing.
Fig. 4 is shown in pressure release fragmentation mechanism 6, is successively put into pressure release fragmentation 6-1 and sealing metal washer 6-2, with fragmentation pressure spiral shell 6-3
It compresses and ensures sealing, pressure release fragmentation mechanism 6 is then packed into right plug 9.
The gun propellant charge parameter of preferred embodiment of the present invention test is as follows：3 diameter 80mm of coyote hole, length 100mm, transmitting
Medicine powder charge 5 is 5/7 single camphor tree medicine, loading density 0.2g/cm3, test method includes the following steps：
1) sensor stand 7 is processed into length 100mm, and axial cross section is located at 25mm, 50mm, 75mm, each axis
It is equipped with 3 test fulcrums, respectively at 120 degree, radial distance 0,15mm, 30mm to section.
2) thermocouple is fixed on each fulcrum, and its level-one is welded on holder, in addition it is close to be connected to insulation for level-one
Seal electrode 2.
3) left plug 8 and igniter 1 are installed.
4) load weighted single camphor tree medicine is put into coyote hole.
5) according to squeeze pressure 30MPa, area ignition theoretical pressure 10MPa, according to pressure release fragmentation selection principle：PIt is broken=PIt squeezes
+PIt is theoretical, therefore the pressure release fragmentation of selected pressure resistance 40MPa；
6) right plug 9 is installed, sensor line is connected.
7) ready rear igniting, tests ignition signal and simultaneously analyzes, and obtains the comprehensive simultaneity test of the igniting of each ignition point
As a result, four dispersibilities that this experiment reaches 5MPa, 10MPa, 20MPa, 30MPa time with pressure indicate.
It is not difficult to find out from preferred embodiment above, core of the invention content is introduced directly into coyote hole gun propellant charge
Sensor test ignition process signal carries out analysis comparison, finally with signal change procedure to the test signal of multiple geometric points
Consistency overall merit gun propellant charge the comprehensive simultaneity of igniting.Experimental results are true, evaluation parameter science, can
The ignition results of objective evaluation gun propellant charge.
Claims (2)
- Comprehensive simultaneity evaluation method 1. a kind of gun propellant charge is lighted a fire, it is characterised in that steps are as follows：A, according to weapons with pipes coyote hole geometry, the sensor stand (7) of fixed sensor is made, it is axial, radial in coyote hole Multiple test points are set；B, sensor (4) is fixed on above-mentioned test point, one of its two leads is connect with sensor stand (7), sensed Device holder (7) is in close contact after being packed into coyote hole with coyote hole (3) wall；An other lead is connected to the insulated enclosure of left plug (8) On electrode (2)；C, according to weapons with pipes bullet squeeze pressure PIt squeezesTheoretical pressure P when lighting a fire simultaneously with powder charge comprehensivelyIt is theoretical, it is broken to choose pressure release Piece is packed into pressure release fragmentation mechanism (6), and pressure release fragmentation mechanism (6) is assemblied on right plug (9)；Pressure release fragmentation selection principle：Pressure release Fragmentation maximum pressure resistance PIt is broken=PIt squeezes+PIt is theoretical；D, igniter (1) is assemblied on left plug (8)；Gun propellant charge (5) is packed into coyote hole (3), and installs all components；E, igniter (1) works, and lights gun propellant charge (5), sensor (4) acquires signal, when pressure reaches P in experimentIt is brokenWhen, Pressure release fragmentation ruptures pressure release, off-test；Igniting by the variation Conformance Assessment gun propellant charge of axial direction, radial signals is complete Face simultaneity.
- 2. propellant powder ignition performance test method according to claim 1, it is characterised in that：The coyote hole (3) is axially surveyed Pilot is 3 groups or more, and radial test point is 2 points or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810064087.7A CN108426976B (en) | 2018-01-23 | 2018-01-23 | Propellant powder charging ignition comprehensive simultaneity evaluation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810064087.7A CN108426976B (en) | 2018-01-23 | 2018-01-23 | Propellant powder charging ignition comprehensive simultaneity evaluation method |
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| CN108426976A true CN108426976A (en) | 2018-08-21 |
| CN108426976B CN108426976B (en) | 2020-09-25 |
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| CN201810064087.7A Active CN108426976B (en) | 2018-01-23 | 2018-01-23 | Propellant powder charging ignition comprehensive simultaneity evaluation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108982050A (en) * | 2018-08-28 | 2018-12-11 | 西安近代化学研究所 | Bath scaled model experimental device and method are fallen in a kind of powder charge |
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| CN104048563A (en) * | 2014-06-24 | 2014-09-17 | 西安近代化学研究所 | Gun propellant dynamic combustion speed test device |
| CN104089736A (en) * | 2014-06-23 | 2014-10-08 | 中国石油大学(华东) | Gunpowder detonation loading stress distribution law testing system |
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| CN2411473Y (en) * | 1998-12-14 | 2000-12-20 | 中国工程物理研究院应用电子学研究所 | shock wave pressure testing device |
| CN1873411A (en) * | 2005-06-03 | 2006-12-06 | 中国科学院力学研究所 | Device for testing deflagrability of condensed fire detonator under condition of high termerature and high pressure |
| CN101907427A (en) * | 2010-07-15 | 2010-12-08 | 西安近代化学研究所 | Device for testing transfiguration burning rate of gun propellant |
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| CN104089736A (en) * | 2014-06-23 | 2014-10-08 | 中国石油大学(华东) | Gunpowder detonation loading stress distribution law testing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108982050A (en) * | 2018-08-28 | 2018-12-11 | 西安近代化学研究所 | Bath scaled model experimental device and method are fallen in a kind of powder charge |
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| CN108426976B (en) | 2020-09-25 |
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