CN110411290A - It is a kind of for emptying the cavitation spray head of Charge of ammunitions - Google Patents
It is a kind of for emptying the cavitation spray head of Charge of ammunitions Download PDFInfo
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- CN110411290A CN110411290A CN201910800938.4A CN201910800938A CN110411290A CN 110411290 A CN110411290 A CN 110411290A CN 201910800938 A CN201910800938 A CN 201910800938A CN 110411290 A CN110411290 A CN 110411290A
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- Prior art keywords
- charge
- spray head
- ammunitions
- cavitation
- emptying
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor
- F42B33/06—Dismantling fuzes, cartridges, projectiles, missiles, rockets or bombs
- F42B33/062—Dismantling fuzes, cartridges, projectiles, missiles, rockets or bombs by high-pressure water jet means
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
Abstract
The present invention relates to a kind of for emptying the cavitation spray head of Charge of ammunitions, belongs to Waste Distillers'Grain recycling and reusing field.Including jet stream inlet channel and multiple jet stream water outlets, a two-stage expanding cavitating nozzle is equipped in each jet stream water outlet；The inner-cavity structure of the two-stage expanding cavitating nozzle successively includes four taper contraction section, rectangular throat contraction section, level-one rectangle expansion segment and second level cone expansion section subregions, and the diameter of level-one rectangle expansion segment is greater than the diameter of rectangular throat contraction section.When the jet stream in jet pipe passes through cavitation spray head, cavitation bubble is generated inside it, and cavitation bubble acts on powder charge with jet stream ejection, reaches the emptying to Charge of ammunitions and is crushed purpose.The present invention can quickly empty 76-155mm Large diameter Charge of ammunitions in 10-20min, and it entirely empties process powder charge to be in water environment, medicine is highly-safe, solves the problems, such as that existing press fitting or the non-terraced base Charge of ammunitions of casting type can not be emptied efficiently, safely.
Description
Technical field
The invention belongs to Waste Distillers'Grain recycling and reusing fields, and in particular to a kind of cavitation spray for emptying Charge of ammunitions
Head.
Background technique
Ammunition, which is emptied, mainly uses heating melting method, is exclusively used in emptying terraced base Charge of ammunitions, and casting type and substep are pressed
The non-terraced base new process Charge of ammunitions such as formula can not be emptied using existing heating melting method, in the past can only be using field decrepitate
Extensive style mode is destroyed, and serious environmental pollution and energy waste are caused, and does not meet international " 3R " green processing advocated
Theory.
Enter the batch scrap phase successively now with ammunition, a large amount of non-terraced base ammunition faces emptying processing problem, water-jet
It is the project for just beginning to focus on and study domestic in recent years, it can be achieved that casting type and step by step press fitting that Flow Technique, which is applied to ammunition, which to be emptied,
The non-terraced base new process Charge of ammunitions such as formula, but research emphasis focuses mostly on the emptying in high-pressure water jet to Charge of ammunitions, high pressure water
Jet stream emptying mainly has two large problems: being difficult to handle first is that can generate a large amount of foams during pouring out；Second is that since hydraulic pressure is excessively high,
Nozzle and some sealing elements need to frequently replace, and substantially increase early investment and later period maintenance cost.In addition, having been reported that display
High-pressure water jet falls that medicine is not applicable to the powder charge that some susceptibilitys are slightly higher, and Yi Yinqi charging explosion brings security risk.It can see
Out, although high-pressure water jet emptying powder charge airframe technology has application in China, but does not formulate unified relevant criterion also at present
And specification, it is unable to ensure the safety that obsolete ammunition is handled using high-pressure water jet.
Summary of the invention
The object of the present invention is to provide a kind of for emptying the cavitation spray head of Charge of ammunitions, solves existing press fitting or casting
The problem that the non-terraced base Charge of ammunitions of formula can not be emptied efficiently, safely, shortens and empties the time.
The technical solution of the present invention is as follows: a kind of for emptying the cavitation spray head of Charge of ammunitions, which is characterized in that including jet stream
Inlet channel and multiple jet stream water outlets, each jet stream water outlet is interior to be equipped with a two-stage expanding cavitating nozzle；The two-stage expands
The inner-cavity structure for opening formula cavitating nozzle successively includes taper contraction section, rectangular throat contraction section, level-one rectangle expansion segment and second level
Four subregions of cone expansion section, the diameter of level-one rectangle expansion segment are greater than the diameter of rectangular throat contraction section.
The utility model has the advantages that the present invention carries out grinding for Charge of ammunitions emptying, especially high explosive emptying using cavitating water jet
Study carefully and have not been reported, compared to high-pressure water jet tens to the jet pressure of megapascal up to a hundred, needed for the advantage of cavitating water jet is
Jet pressure it is lower, significantly reduce the security risk for the process of falling medicine；
1, the cavitation vapour that cavitation spray head two-stage expanding cavitating nozzle generates is higher containing rate than the cavitation vapour of conventional nozzle containing rate
60-70% is conducive to raising powder charge and degrades emptying efficiency and effect, can quickly empty in 10-20min big in 76-155mm
Calibre ammunition powder charge；
2, the angle of the axis of the 5 two-stage expanding cavitating nozzles and spray head axis design structures such as not, can make jet stream exist
Area coverage is big during emptying Charge of ammunitions, improves and empties rate, shortens and empties the time；
3, the pressure for the jet stream that cavitation spray head uses is 25-35MPa, and jet pressure is less than high-pressure water shot flowing pressure, favorably
In reduction energy consumption and equipment loss；
4, cavitation spray head is emptied Charge of ammunitions process and is in water environment, will not fire because of electrostatic and hot localised points,
Medicine is highly-safe, can solve the problems, such as that existing press fitting or the non-terraced base Charge of ammunitions of casting type are emptied safely；
5, cavitation spray head pours out powder charge medicine block granular size and is averaged 1-2cm, and maximum particle diameter is no more than 4cm, pours out medicine particle
It is small, be conducive to the recycling and reusing of subsequent powder charge.
Detailed description of the invention
Fig. 1 is the schematic diagram that cavitation spray head of the present invention is used to empty Charge of ammunitions.
Fig. 2 is cavitation spray head detail view at A in Fig. 1 of the present invention.
Fig. 3 is two-stage expanding cavitating nozzle inner cavity detail view at B in Fig. 2 of the present invention.
Fig. 4 is two-stage expanding cavitating nozzle interior cavitation field distribution situation of the present invention.
Fig. 5 is that cavitating nozzle of the present invention sprays water jet to the emptying Cracking Mechanism of powder charge.
1 cavitation spray head, 2 jet pipes, 3 fixtures, 4 powder charges, 5 cavitating water jets, 6 bodies, 7 jet stream inlet channels, 8 two-stage expandings
Cavitating nozzle, 9 spray head tube bodies, 10 angles, 11 nozzle faces, 12 taper contraction sections, 13 rectangular throat contraction sections, 14 level-one rectangles
Expansion segment, 15 second level cone expansion sections；8-1,8-2,8-3,8-4,8-5 are 5 two-stage expanding cavitating nozzles, ai(i=1,2,
It 3,4,5) is 5 two-stage expanding cavitating nozzles angle corresponding with spray head axis, i.e. a1For two-stage expanding cavitating nozzle 8-1
Angle corresponding with spray head axis, a2For two-stage expanding cavitating nozzle 8-2 angle corresponding with spray head axis, a3For two-stage expansion
Open formula cavitating nozzle 8-3 angle corresponding with spray head axis, a4It is corresponding with spray head axis for two-stage expanding cavitating nozzle 8-4
Angle, a5For two-stage expanding cavitating nozzle 8-5 angle corresponding with spray head axis.
Specific embodiment
To keep the purpose of the present invention, content and advantage clearer, a specific embodiment of the invention is made further detailed
Thin description.
The present invention provides a kind of for emptying the cavitation spray head of Charge of ammunitions, which is characterized in that including jet stream inlet channel 7,
Multiple jet stream water outlets, spray head tube body 9., jet stream water outlet is interior to be equipped with two-stage expanding cavitating nozzle (8), which sets
The jet pipe 2 for having jet stream to enter, downstream are equipped with the fixture 3 of fastening ammunition body, and the installation of cavitation spray head 1 is placed in jet nozzle 2 and goes out
Water end (W.E.) mouth, and there are spacing (i.e. ranges) with 4 surface of Charge of ammunitions, when the jet stream in jet pipe 2 passes through cavitation spray head 1, meeting exists
Its internal generation cavitation bubble, when cavitation bubble sprays flowing arrival 4 surface of powder charge with jet stream, because of the impact masterpiece of the unbalance generation of stress
For powder charge 4, reaches and emptying purpose is degraded to Charge of ammunitions 4.
Cavitation spray head is used to empty the detailed process of Charge of ammunitions are as follows: ammunition to be emptied is placed at fixture, fixture tail
Portion is driven by motor, and can rotate around body axle center；Entered in body after water jets are pressurized by jet pipe and cavitation spray head, is started
Medicine；Jet pipe and the slow stepping Forward of cavitation spray head, body at the uniform velocity spinning during medicine, and soak in water always, to protect
Card safety；The medicine block of removing flows out body with water jets, to realize that powder charge is emptied.
Since the main function components that cavitating water jet empties ammunition are cavitation spray heads, the key of cavitation spray head is to design
Reasonable nozzle chamber improves cavitation bubble content, and then reinforces cavitation, to improve the cavitation rate of falling drug effect and effect.It is existing
Cavitating nozzle inner cavity mostly be basic three stage structure, including entrance contraction section, throat's contraction section and export expansion section three
Subregion, only one expansion segment of this structure, and cavitation bubble occurs mainly in herein.Contain to improve the cavitation bubble of expansion segment
Amount, scholars are mostly to be optimized in terms of the size of three-stage cavitating nozzle, nozzle number or jet pressure etc. are several
Research: first is that adjusting the size of three subregions；Second is that increasing nozzle number；Third is that increasing jet pressure, these three approach
Although can increase cavitation bubble content, increased amplitude is little, and for ammunition empty there is also some drawbacks, such as by
Limited in caliber ammunition and cavity volume, if increasing nozzle number, corresponding jet size and volume increase, and influence spray head in bullet
The outflow of the movement of medicine inner cavity and broken powder charge, for another example increases jet pressure, will certainly bring and similarly pacify with high-pressure water jet
Full problem.
Therefore spray head of the invention also has following technical characteristic:
The cavitation spray head is porous nozzle 1, is equipped with 5 two-stage expanding cavitating nozzles 8.Nozzle number is very few, cannot
It is clean to empty Charge of ammunitions；Nozzle number is excessive, and corresponding nozzle volume will increase, since ammunition intracavity space is limited, nozzle
Volume will affect greatly itself movement inside body, while be unfavorable for removing medicine block with water jets outflow body.
The axis of 5 two-stages expanding cavitating nozzle and the angle 10 of spray head axis differ, angle aiFor 0-90 degree.
The angle 10 for adjusting 5 nozzles and spray head axis according to the bore for emptying ammunition within this range, can be such that jet action region covers
Cover 76-155mm calibre ammunition powder charge face.
The inner-cavity structure of the two-stage expanding cavitating nozzle 8 includes taper contraction section 12, rectangular throat contraction section 13, one
Grade rectangle expansion segment 14 and 15 4 subregions of second level cone expansion section.The diameter of level-one rectangle expansion segment (14) is greater than rectangular throat
Contraction section (13) and 15 arrival end of second level cone expansion section diameter.
The level-one rectangle expansion segment 14 and second level cone expansion section 15 are cavitation bubble generating unit.Hair is calculated by simulation
Cavitation vapour (the volume accounting of cavitation bubble in the jet) containing rate existing, that two-stage expanding cavitating nozzle generates, than conventional nozzle (knot
Structure includes three taper contraction section, rectangular throat contraction section and cone expansion section subregions, no rectangle expansion segment) generate cavitation vapour
Containing the high 60-70% of rate.
The two-stage expanding cavitating nozzle 8 is external screw thread linked vector graph, is placed in 1 body of internal screw thread cavitation spray head.
The cavitation spray head 1 and jet pipe 2 are to be threadedly coupled.
The bore for emptying ammunition is 76-155mm.
The pressure of the jet stream is 25-35MPa.According to cavitating water jet intreractive theory, cavitation, which is degraded, to be emptied effect and penetrates
Flowing pressure is related.It is calculated and is found by simulation, under different jet pressure, charge surface maximum cavitation vapour is as shown in table 1 containing rate.It penetrates
When charge surface maximum cavitation vapour jet pressure containing rate is significantly greater than 15MPa and 45MPa when flowing pressure is 25MPa and 35MPa
Charge surface maximum cavitation vapour contains rate, and therefore, jet pressure range selection 25-35MPa is advisable.
Under 1 different jet pressure of table, charge surface maximum cavitation vapour contains rate
| Jet pressure/MPa | 15 | 25 | 35 | 45 |
| Charge surface maximum cavitation vapour contains rate/% | 74.8 | 94.8 | 88.1 | 67.8 |
The cavitation spray head and Charge of ammunitions surface spacing (i.e. range) are 30-50mm.It is acted on and being managed according to cavitating water jet
By cavitation degrades emptying effect and cavitation spray head is related with Charge of ammunitions surface spacing (i.e. range).Discovery is calculated by simulation,
Under different spacing (i.e. range), charge surface maximum cavitation vapour is as shown in table 2 containing rate.When spacing (i.e. range) is 30mm and 50mm
Charge surface maximum cavitation vapour when charge surface maximum cavitation vapour jet pressure containing rate is significantly greater than 10mm and 70mm contains rate, because
This, spacing (i.e. range) range selection 30-50mm is advisable.
Under the different spacing (i.e. range) of table 2, charge surface maximum cavitation vapour contains rate
Embodiment 1:
The present embodiment provides the cavitation spray head for emptying Charge of ammunitions, can be in it when jet stream passes through cavitation spray head
Portion generate cavitation bubble, cavitation bubble with jet stream spray flowing reach charge surface when, because the unbalance generation of stress impact force action in
Powder charge reaches and degrades emptying purpose to Charge of ammunitions.
Specific operation process are as follows: by bore be 155mm warhead be placed at fixture, fixture tail portion be driven by motor around
The rotation of body axle center, setting cavitation spray head and Charge of ammunitions surface spacing (i.e. range) are 30mm；Water jets are pressurized to 25MPa
Entering in body via jet pipe and cavitation spray head, the angle of 5 two-stage expanding cavitating nozzles and spray head axis is a1,2,3=
45 degree, a4=0 degree, a5=90 degree, start down medicine；Before jet pipe and cavitation spray head are during medicine with the speed stepping of 6mm/min
It moves, body is soaked in water always with the at the uniform velocity spinning of the speed of 30r/min, to guarantee safety；The medicine block of removing is with water jets
Body is flowed out, it is final to realize that powder charge is emptied.
Embodiment 2:
The present embodiment provides the cavitation spray head for emptying Charge of ammunitions, can be in it when jet stream passes through cavitation spray head
Portion generate cavitation bubble, cavitation bubble with jet stream spray flowing reach charge surface when, because the unbalance generation of stress impact force action in
Powder charge reaches and degrades emptying purpose to Charge of ammunitions.
Specific operation process are as follows: by bore be 76mm warhead be placed at fixture, fixture tail portion be driven by motor around
The rotation of body axle center, setting cavitation spray head and Charge of ammunitions surface spacing (i.e. range) are 40mm；Water jets are pressurized to 32MPa
Entering in body via jet pipe and cavitation spray head, the angle of 5 two-stage expanding cavitating nozzles and spray head axis is a1,2,3=
20 degree, a4=0 degree, a5=60 degree, start down medicine；Before jet pipe and cavitation spray head are during medicine with the speed stepping of 6mm/min
It moves, body is soaked in water always with the at the uniform velocity spinning of the speed of 30r/min, to guarantee safety；The medicine block of removing is with water jets
Body is flowed out, it is final to realize that powder charge is emptied.
Embodiment 3:
The present embodiment provides the cavitation spray head for emptying Charge of ammunitions, can be in it when jet stream passes through cavitation spray head
Portion generate cavitation bubble, cavitation bubble with jet stream spray flowing reach charge surface when, because the unbalance generation of stress impact force action in
Powder charge reaches and degrades emptying purpose to Charge of ammunitions.
Specific operation process are as follows: by bore be 122mm warhead be placed at fixture, fixture tail portion be driven by motor around
The rotation of body axle center, setting cavitation spray head and Charge of ammunitions surface spacing (i.e. range) are 50mm；Water jets are pressurized to 35MPa
Entering in body via jet pipe and cavitation spray head, the angle of 5 two-stage expanding cavitating nozzles and spray head axis is a1,2,3=
30 degree, a4=0 degree, a5=80 degree, start down medicine；Before jet pipe and cavitation spray head are during medicine with the speed stepping of 6mm/min
It moves, body is soaked in water always with the at the uniform velocity spinning of the speed of 30r/min, to guarantee safety；The medicine block of removing is with water jets
Body is flowed out, it is final to realize that powder charge is emptied.
Above three embodiments are emptied the results show that powder charge is emptied completely, and it is big to pour out powder charge particle without damage for body inner cavity
Small average 1-2cm, maximum particle diameter are no more than 4cm, pour out the small recycling and reusing for being conducive to subsequent powder charge of medicine particle.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of for emptying the cavitation spray head of Charge of ammunitions, which is characterized in that go out including jet stream inlet channel (7) and multiple jet streams
Water channel, each jet stream water outlet is interior to be equipped with a two-stage expanding cavitating nozzle (8)；The two-stage expanding cavitating nozzle (8)
Inner-cavity structure successively include taper contraction section (12), rectangular throat contraction section (13), level-one rectangle expansion segment (14) and second level
(15) four subregions of cone expansion section, the diameter of level-one rectangle expansion segment (14) are greater than the diameter of rectangular throat contraction section (13).
2. according to claim 1 a kind of for emptying the cavitation spray head of Charge of ammunitions, which is characterized in that cavitation spray head peace
It puts and is placed in jet nozzle (2) water outlet port, and there are spacing with Charge of ammunitions (4) surface, when the jet stream in jet pipe (2) passes through
Jet stream inlet channel (7) generates cavitation bubble in two-stage expanding cavitating nozzle (8), and cavitation bubble sprays flowing with jet stream and reaches powder charge
(4) surface is emptied Charge of ammunitions (4) broken.
3. according to claim 1 a kind of for emptying the cavitation spray head of Charge of ammunitions, which is characterized in that the two-stage expands
The angle (10) of the axis and cavitation spray head axis of opening formula cavitating nozzle differs, and angle is 0-90 degree.
4. according to claim 1 a kind of for emptying the cavitation spray head of Charge of ammunitions, which is characterized in that the cavitation spray
Head (1) is equipped with 5 two-stage expanding cavitating nozzles (8)；Two-stage expanding cavitating nozzle (8) outlet is equipped with fastening ammunition body
Fixture (3), jet stream inlet channel (7) inlet are equipped with the jet pipe (2) that jet stream enters.
5. according to claim 1 a kind of for emptying the cavitation spray head of Charge of ammunitions, which is characterized in that the level-one square
Shape expansion segment (14) and second level cone expansion section (15) are cavitation bubble generating unit.
6. according to claim 1 a kind of for emptying the cavitation spray head of Charge of ammunitions, which is characterized in that the two-stage expands
Opening formula cavitating nozzle (8) is external screw thread linked vector graph, is threadedly coupled with the jet stream water outlet of cavitation spray head (1).
7. according to claim 1 a kind of for emptying the cavitation spray head of Charge of ammunitions, which is characterized in that the cavitation spray
Head (1) and jet pipe (2) are to be threadedly coupled.
8. according to claim 1 a kind of for emptying the cavitation spray head of Charge of ammunitions, which is characterized in that the emptying bullet
The bore of medicine is 76-155mm.
9. according to claim 1 a kind of for emptying the cavitation spray head of Charge of ammunitions, which is characterized in that the jet stream
Pressure is 25-35MPa.
10. -9 is described in any item a kind of for emptying the cavitation spray head of Charge of ammunitions according to claim 1, which is characterized in that
The cavitation spray head and Charge of ammunitions surface spacing are 30-50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910800938.4A CN110411290A (en) | 2019-08-28 | 2019-08-28 | It is a kind of for emptying the cavitation spray head of Charge of ammunitions |
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| CN201910800938.4A CN110411290A (en) | 2019-08-28 | 2019-08-28 | It is a kind of for emptying the cavitation spray head of Charge of ammunitions |
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| CN201910800938.4A Pending CN110411290A (en) | 2019-08-28 | 2019-08-28 | It is a kind of for emptying the cavitation spray head of Charge of ammunitions |
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| CN112484592A (en) * | 2020-11-18 | 2021-03-12 | 中国人民解放军32181部队 | Guided missile ammunition recovery device |
| CN115069725A (en) * | 2022-06-13 | 2022-09-20 | 咸阳华清设备科技有限公司 | Energetic material solid waste treatment and recycling equipment and process |
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| CN115069725A (en) * | 2022-06-13 | 2022-09-20 | 咸阳华清设备科技有限公司 | Energetic material solid waste treatment and recycling equipment and process |
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Application publication date: 20191105 |
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