CN108871124A - Plate safety separation method and charge constitution - Google Patents
Plate safety separation method and charge constitution Download PDFInfo
- Publication number
- CN108871124A CN108871124A CN201810796847.3A CN201810796847A CN108871124A CN 108871124 A CN108871124 A CN 108871124A CN 201810796847 A CN201810796847 A CN 201810796847A CN 108871124 A CN108871124 A CN 108871124A
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- Prior art keywords
- plate
- explosive
- buffer layer
- charge
- cutting
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The present invention relates to plate safety separation method and charge constitutions, reduce the main control parameters in plate separation process, including plate, explosive, detonator, buffer layer, wall, cutting using theory deduction, it is characterised in that：There is circular hole at plate center, plate central axis two sides, which are drawn, cutting, and buffer layer is placed in circular hole, and explosive is placed in buffer layer, there is the wall being made of plastic bushing cladding detonator between explosive, explosive is by blasting cap initiation.The present invention can make the lucky safe separating of plate without excess power, have reliable theory deduction, experimentation is succinct, and required experimental quantities are few.
Description
Technical field
The present invention relates to explosive processing fields, specifically plate safety separation method and charge constitution.
Background technique
The non-inclusive accident of aero-engine will lead to the serious airplane crash of fatal crass.The dangerous debris of high speed high energy penetrates machine
Casket flies out, and can wound cabin, fuel tank, fluid pressure line and electrical control circuit of aircraft etc., seriously jeopardizes flight safety, therefore into
Row aero-engine casing contains Journal of Sex Research and is of great significance.Casing containment test is that verifying casing doubling is had no progeny the leaf to fly out
Piece contains the test of ability, requires blade to be broken under specific position and revolving speed when carrying out casing containment test, and without excessive
Residual velocity and fragmentation splash.Now determine that the method for explosion reaches blade separation and do not provide the mesh of excess power to blade
, further thinking is provided for casing containment test.
Summary of the invention
The object of the present invention is to provide plate safety separation method and charge constitutions, reduce plate using theory deduction and separate
Main control parameters in the process can simplify experimentation, reduce experimental quantities；It can make the lucky safe separating of plate and without more
Remaining power.A kind of operational means that can be used as explosion safety separation plate, mentions for such advanced optimizing for Explosive separation structure
Theoretical basis has been supplied, provides further thinking for casing containment test.
The technical solution adopted by the present invention is that：Plate safety separation method and charge constitution, including plate, explosive, detonator,
Airspace, buffer layer, plastic bushing, cutting, it is characterised in that：Circular hole, the plate center are equipped at the plate center
Axis two sides, which are drawn, cutting, and buffer layer is placed in the circular hole, and explosive is placed in the buffer layer, and the explosive is not couple dress
Medicine structure, the decoupling charge structure are that explosive diameter is less than blasthole diameter, and there are the dresses in gap between explosive and blasthole wall
Medicine structure, the explosive are spaced loading structure, and the spaced loading structure has the charge constitution at interval, institute between explosive
Stating has wall between explosive, the wall is made of plastic bushing cladding detonator, and the explosive is by blasting cap initiation.
Preferably, plate safety separation method provided by the invention and charge constitution, reduce plate using theory deduction
Main control parameters in separation process, simplify experimentation, reduce experimental quantities.
Its theory deduction is：
The main control parameters that plate is broken in blast process：Explosive parameter：Explosive payload Q：Can be converted by charge diameter φ,
Degree of packing ρe, unit mass explosive chemical energy Ee, explosion product expansion index γe, loaded length l, linear charging density ql；
Plate parameter：Minimum wall thickness (MINI W.) d, density p, elastic constant E, Poisson's ratio μ, breakdown strength S；Buffer layer parameter：Thickness δ, density pb、
State equation pressure parameter Bb, adiabatic exponent γb。
Plate is separated without excess power when Uncoincided charge, decision condition at this time is speed V=0, be can be written
Relational expression is：
V=f (ql,ρe,Ee,γe；ρ,E,μ,S,d；ρb,Bb,γb,δ) (1)
Choose ρe,Ee, d obtains dimensionless functional relation as fundamental quantity：
(4) formula can simplify for：
Or
(3) formula is substituted into (5) Shi Ke get：
Main control parameters in plate separation process at this time only remain explosive loading diameter phi, plate minimum wall thickness (MINI W.) d,
Buffer layer thickness δ, it is horizontal by every impact factor 5, by required experiment number by 513It is secondary to be reduced to 53It is secondary.
Preferably, plate safety separation method provided by the invention and charge constitution, circle is equipped at the plate center
Hole is placed with buffer layer in the circular hole, and explosive is placed in the buffer layer, and the explosive is decoupling charge structure, it is described not
Coupling charging structure is that explosive diameter is not coupled less than blasthole diameter there are the charge constitution in gap between explosive and blasthole wall
Charge constitution has effectively been sustained explosion energy, reduces the local failure exploded to plate.Plate central axis two sides
Drawing has cutting, conducive to the generation and diffusion in crack.The explosive be spaced loading structure, the spaced loading structure be explosive it
Between exist interval charge constitution.There is wall between the explosive, the wall is made of plastic bushing cladding detonator.
Compared with prior art, its advantages embody for plate safety separation method and charge constitution provided by the invention
?：Compared with existing plate separation method, the present invention passes through theory deduction, and the main control parameters in plate separation process are contracted
3 are kept to, experimentation is simplified, reduces experimental quantities；It is decoupling charge structure in plate hole, has been sustained Explosive Energy
Amount reduces the local failure exploded to plate；Plate central axis two sides, which are drawn, cutting, conducive to the generation and diffusion in crack；
It is spaced loading in hole, makes the lucky safe separating of plate without excess power, ensure that the safety of experimentation.
Detailed description of the invention
Fig. 1 is the charge constitution schematic diagram of plate safety separation method and charge constitution；
Fig. 2 is the plate cutting schematic diagram of plate safety separation method and charge constitution.
In figure：1- plate；2- explosive；3- detonator；4- wall；5- buffer layer；6- cutting.
Specific embodiment
Embodiment one
Referring to Fig.1, plate 1 is one piece of long 120mm, wide 66mm, the titanium alloy plate of high 12mm.
Referring to Fig. 2, long 120mm, the cutting 6 of wide 0.5mm, deep 1mm have been drawn in 1 central axis two sides of plate respectively.
A diameter 8mm is made a call at 1 center of plate, the circular hole of long 120mm, the minimum wall thickness (MINI W.) of plate 1 is 2mm at this time.Buffering
Layer 5 is long 120mm, and buffer layer 5 is put into the center hole of plate 1 by the pvc pipe of thick 1.5mm.Explosive 2 is 25mm long.Wall
4 length 20mm, wall 4 are the structure that plastic bushing coats that detonator is formed, and wall 4 is placed between explosive 2；2 quilt of explosive
Detonator 3 detonates.
According to described in appeal embodiment, explosive 2 is detonated by detonator 3, and wall 4 transmits shock wave, makes subsequent explosive 2 successively
It is initiated.Explosion energy is sustained by buffer layer 5, and explosion is reduced the local failure of plate 1.Under the induction of cutting 6, explosion
The high temperature and high pressure gas of generation is by 1 safe separating of plate, and without excess power.
Compared with existing plate separation method, the present invention passes through theory deduction, by the main control in plate separation process
Parameter is reduced to 3, simplifies experimentation, reduces experimental quantities；It is decoupling charge structure in plate hole, has been sustained quick-fried
Fried energy, reduces the local failure exploded to plate；Plate central axis two sides, which are drawn, cutting, conducive to the generation and expansion in crack
It dissipates；It is spaced loading in hole, makes the lucky safe separating of plate without excess power, ensure that the safety of experimentation.
Embodiment two
When 4 length of wall is 0, charge constitution is continuous charging structure in 1 hole of plate, similar with embodiment one, herein
It repeats no more.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (2)
1. plate safety separation method, it is characterised in that：Using theory deduction, 13 control parameters in plate separation process are subtracted
It is less 3, it is horizontal by every impact factor 5, it is equal to experiment number by 513It is secondary to be reduced to 53It is secondary；
It is derived as：
The main control parameters that plate is broken in blast process：Explosive parameter：Explosive payload Q：It can be converted by charge diameter φ, powder charge
Density pe, unit mass explosive chemical energy Ee, explosion product expansion index γe, loaded length l, linear charging density ql；Plate
Parameter：Minimum wall thickness (MINI W.) d, density p, elastic constant E, Poisson's ratio μ, breakdown strength S；Buffer layer parameter：Thickness δ, density pb, state
Equation pressure parameter Bb, adiabatic exponent γb；
Plate is separated without excess power when Uncoincided charge, decision condition at this time is speed V=0, and relationship can be written
Formula is：
V=f (ql,ρe,Ee,γe；ρ,E,μ,S,d；ρb,Bb,γb,δ) (1)
Choose ρe,Ee, d obtains dimensionless functional relation as fundamental quantity：
(4) formula can simplify for：
(3) formula is substituted into (5) Shi Ke get：
Main control parameters in plate separation process at this time only remain explosive loading diameter phi, plate minimum wall thickness (MINI W.) d, buffering
Thickness degree δ, it is horizontal by every impact factor 5, by required experiment number by 513It is secondary to be reduced to 53It is secondary.
2. charge constitution, including plate are separated with the plate safety that claim 1 matches, explosive, detonator, buffer layer, interval
Layer, cutting, it is characterised in that：Circular hole is equipped at the plate center, plate central axis two sides, which are drawn, cutting, the quarter
Slot is that length is consistent with the plate, depth 0.5mm, the elongated slot of width 1mm, is placed with buffer layer, the buffering in the circular hole
Explosive is placed in layer, and there are wall between the explosive, the wall is made of plastic bushing cladding detonator, described fried
Medicine is by blasting cap initiation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810796847.3A CN108871124A (en) | 2018-07-19 | 2018-07-19 | Plate safety separation method and charge constitution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810796847.3A CN108871124A (en) | 2018-07-19 | 2018-07-19 | Plate safety separation method and charge constitution |
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| CN108871124A true CN108871124A (en) | 2018-11-23 |
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| CN201810796847.3A Pending CN108871124A (en) | 2018-07-19 | 2018-07-19 | Plate safety separation method and charge constitution |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114993112A (en) * | 2022-06-08 | 2022-09-02 | 安徽理工大学 | Charging structure for safely separating metal plates |
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| CN2171843Y (en) * | 1993-02-22 | 1994-07-13 | 崔彪 | Demolition cleavage crack apparatus |
| JPH07259350A (en) * | 1994-03-25 | 1995-10-09 | Hazama Gumi Ltd | Mounting method of shaped charge to pipe member and blasting method of pipe member |
| CN101367223A (en) * | 2007-08-17 | 2009-02-18 | 北京林业大学 | Fine blasting method inside lumber |
| CN101545747A (en) * | 2009-05-03 | 2009-09-30 | 张志呈 | Projectile charging structure for directional pressure relief vibration isolation blasting |
| CN105507611A (en) * | 2015-12-18 | 2016-04-20 | 上海建工七建集团有限公司 | Method for dismantling bottom boards in existing deep foundation pit |
| CN107063690A (en) * | 2016-12-03 | 2017-08-18 | 浙江大学 | A kind of contactless local fast heating constant speed of blade for casing containment test flies disconnected experimental technique |
| CN108716990A (en) * | 2018-06-06 | 2018-10-30 | 中国航发沈阳发动机研究所 | A kind of engine crankcase containment test device |
-
2018
- 2018-07-19 CN CN201810796847.3A patent/CN108871124A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2171843Y (en) * | 1993-02-22 | 1994-07-13 | 崔彪 | Demolition cleavage crack apparatus |
| JPH07259350A (en) * | 1994-03-25 | 1995-10-09 | Hazama Gumi Ltd | Mounting method of shaped charge to pipe member and blasting method of pipe member |
| CN101367223A (en) * | 2007-08-17 | 2009-02-18 | 北京林业大学 | Fine blasting method inside lumber |
| CN101545747A (en) * | 2009-05-03 | 2009-09-30 | 张志呈 | Projectile charging structure for directional pressure relief vibration isolation blasting |
| CN105507611A (en) * | 2015-12-18 | 2016-04-20 | 上海建工七建集团有限公司 | Method for dismantling bottom boards in existing deep foundation pit |
| CN107063690A (en) * | 2016-12-03 | 2017-08-18 | 浙江大学 | A kind of contactless local fast heating constant speed of blade for casing containment test flies disconnected experimental technique |
| CN108716990A (en) * | 2018-06-06 | 2018-10-30 | 中国航发沈阳发动机研究所 | A kind of engine crankcase containment test device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114993112A (en) * | 2022-06-08 | 2022-09-02 | 安徽理工大学 | Charging structure for safely separating metal plates |
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Application publication date: 20181123 |