CN109084642B - Method for preparing shaped charge by using bulk emulsion explosive - Google Patents
Method for preparing shaped charge by using bulk emulsion explosive Download PDFInfo
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- CN109084642B CN109084642B CN201810505151.0A CN201810505151A CN109084642B CN 109084642 B CN109084642 B CN 109084642B CN 201810505151 A CN201810505151 A CN 201810505151A CN 109084642 B CN109084642 B CN 109084642B
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- explosive
- main shell
- bulk emulsion
- emulsion explosive
- shaped charge
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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
- F42B33/02—Filling cartridges, missiles, or fuzes; Inserting propellant or explosive charges
- F42B33/025—Filling cartridges, missiles, or fuzes; Inserting propellant or explosive charges by compacting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a method for preparing a shaped charge by using bulk emulsion explosive. The method comprises the following steps: according to the loading quantity of the bulk emulsion explosive, the top plate (2) is embedded into grooves corresponding to selected scales of the two rectangular plates (8); when the bulk emulsion explosive is filled in the main shell (1) and is filled in the 1/6-1/5 part of the main shell (1), the side plates (3) and the compression device are arranged in the concave part of the main shell (1), the springs (6) are compressed by the baffle plates (7), the explosive is repeatedly pushed forward along the main shell (1) until the explosive is filled, the springs (6) are compressed to a limit state after the explosive is filled, and the baffle plates (7) are blocked on the main shell (1) to realize the sealing of the explosive package. According to the invention, the drug loading amount can be adjusted according to the scales on the rectangular side plates, and the compression device can compact the bulk emulsion explosive, so that the process is simplified, and the cost is reduced.
Description
Technical Field
The invention belongs to the field of engineering blasting, and particularly relates to a method for preparing a shaped charge by using bulk emulsion explosive.
Background
The hole at one end of the explosive package (also called energy gathering hole) is used for gathering the energy of detonation of the explosive in the direction of the hole so as to improve the effect of local destruction of the explosive, which is called energy gathering effect.
As research on energy gathering effect is more and more abundant, application of energy gathering blasting in civil engineering field is more and more widespread.
In petroleum exploitation, a focused bomb blasting shock method is widely adopted to improve the effective performance of seismic waves in the action direction of a focused cave; for perforating and cutting in sheet metal processing; the device is used for cutting the ship body when the sunken ship is salvaged; and (3) dismantling the building (structure) of various steel structures by adopting the cutting type shaped charge bag.
The energy gathering blasting has been widely used and has also revealed some drawbacks:
(1) The processing and manufacturing process of the shaped charge is complex;
(2) Different drug loading amounts need to be manufactured into different shaped drug bags, so that the drug loading amount can not be conveniently regulated and controlled and the site processing is inconvenient;
(3) The explosive type has requirements, and the explosive with high explosion velocity, high density and large high intensity is most suitable to be used as the main charge of the shaped charge, but in engineering blasting, the industrial explosive with common explosion velocity and density is also commonly used for reducing the cost, and even if the explosive is required to be processed into a fusion casting state, the cost and the complexity of the process are increased intangibly.
Disclosure of Invention
The invention aims to provide a method for preparing a shaped charge by using bulk emulsion explosive, aiming at the defects in the prior art, so that the feasibility of preparing the shaped charge by using the bulk emulsion explosive is realized.
The technical scheme of the invention is as follows: a method for preparing a shaped charge by using bulk emulsion explosive comprises the following steps:
(1) The method comprises the steps of designing and manufacturing an energy-gathering shell by utilizing the energy gathering effect of explosive explosion, wherein a main shell bottom plate of the shell is concave, two rectangular plates are arranged at the upper part of the shell, the top of the main shell and one side opening of the main shell are not closed, and grooves with scales are formed in the rectangular plates;
(2) A liner is arranged at the concave part of the bottom plate of the main shell;
(3) Designing a rectangular top plate, and embedding the top plate into a groove corresponding to the selected scale of the two rectangular plates according to the loading quantity of the bulk emulsion explosive;
(4) The method comprises the steps of designing a side plate and a compression device, wherein the compression device consists of a spring and a baffle plate with a round bar at one side, the spring is sleeved on the round bar and connected with the baffle plate, and the round bar is cast on the outer side of the side plate;
(5) When the bulk emulsion explosive is filled into the main shell and is filled into the 1/6-1/5 part of the main shell, the side plates and the compression device are arranged in the concave part of the main shell, the spring is compressed by the baffle plate, the explosive is repeatedly pushed forward along the main shell until the explosive is filled, the spring is compressed into a limit state after the explosive is completed, and the baffle plate is blocked on the main shell to realize the sealing of the explosive package.
According to the embodiment of the invention, the main shell, the top plate, the side plates, the round bars and the baffle are made of styrene-butadiene-acrylonitrile copolymer.
According to the embodiment of the invention, the side plate is drilled with small holes for the leg wires of the detonating tube detonator to pass through.
According to the embodiment of the invention, the cone angle formed by the concave bottom of the main shell is 60 degrees.
According to an embodiment of the invention, the limit state of compression of the spring is the length of the round bar.
According to the embodiment of the invention, the liner is made of metal aluminum.
The top plate can adjust the drug loading quantity along with the scales on the two rectangular plates.
The spring is made of metal, has compression of certain elasticity, and the compression device is used for applying pressure to the side plate.
The invention is an improvement on the basis of the traditional shaped charge. The working principle is that according to the energy-gathering blasting theory, after the explosive is blasted, when the explosive product reaches the metal shaped charge liner with special shape, the metal on the inner surface of the shaped charge liner is extruded out due to strong compression, and the metal is sprayed outwards at high speed along the cone angle bisector, so that the explosive product is gathered, the density of the explosive energy flow is improved, and the blasting effect is enhanced.
The invention has the characteristics of structural design of the traditional shaped charge and improves, and compared with the prior art, the invention has the following advantages:
(1) The plastic is used as the main material of the invention, is simple and easy to obtain, simplifies the process and reduces the cost;
(2) The compression device can compact the bulk emulsion explosive, so that the step of fusion casting processing of the explosive is omitted, and the quantification of the charging density of the bulk emulsion explosive is ensured;
(3) The emulsion explosive is approved conventionally without reservation, so that the feasibility of the shaped charge taking bulk explosive as the main charge is realized;
(3) The drug loading amount can be adjusted according to the scales on the rectangular side plates, and different energy-accumulating drug bags are not required to be prepared according to different drug loading amounts.
Drawings
Fig. 1 is a schematic view of the structure of the housing of the present invention.
FIG. 2 is a schematic cross-sectional view at A-A of FIG. 1.
In fig. 1: 1-a main housing; 2-top plate; 3-side plates; 4-shaped charge liner; 5-a round bar; 6-a spring; 7-a baffle; 8-rectangular plates; 9-emulsifying explosive; 10-a separator; 11-an initiating explosive; 12-detonating tube detonator.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and the detailed description, wherein "top, bottom, side" refer to the positional relationship in the drawings of the specification.
As shown in fig. 1, a housing for a shaped charge made from a bulk emulsion explosive, comprising: a main shell 1, a liner 4, a top plate 2, side plates 3 and a compression device.
The main shell 1 is a plastic shell with a concave bottom plate, the concave cone angle is 60 degrees, the material is ABS (styrene-butadiene-acrylonitrile copolymer), the opening at the arrangement position of the top plate 2 and the special-shaped side plate 3 at one side is not closed, scales are marked on the two rectangular plates 8, the scales are provided with grooves, small holes for the foot lines of the detonators 12 of the detonators to pass through are drilled on the closed side plate 3, and then the bulk emulsion explosive is placed in the main shell 1.
The liner 4 is made of metal aluminum, and is arranged at the concave part of the bottom plate of the main shell 1, and the concave cone angle is 60 degrees.
The rectangular top plate 2 is ABS (styrene-butadiene-acrylonitrile copolymer) consistent with the main shell 1, the bulk emulsion explosive is used for sealing after being charged, the sealing top plate 2 is placed in a groove with scales of the main shell 1, and the charging amount can be adjusted along with the scales of the two rectangular plates.
The side plate 3 is shaped, and is made of ABS (styrene-butadiene-acrylonitrile copolymer) consistent with the main shell 1, a round rod 5 is cast on the outer side, and the bulk emulsion explosive is used for sealing after being charged.
The compression device consists of a compression spring 6 with certain elasticity and a baffle plate 7, wherein the compression spring 6 is made of metal, is sleeved on a round rod 5 at the outer side of the special-shaped sealing side plate 3 and is connected with the special-shaped sealing side plate 3, and the baffle plate 7 with the round rod 5 is made of ABS (styrene-butadiene-acrylonitrile copolymer) and is used for applying pressure to the special-shaped sealing side plate 3.
The working process of the method for preparing the shaped charge by using the bulk emulsion explosive is described with reference to the accompanying drawings: and selecting a scale to embed the sealing top plate 2 into a groove corresponding to the scale, loading bulk emulsion explosive into the main shell 2, compressing the compression spring 6 by using the baffle plate 7 in the compression device when the bulk emulsion explosive is loaded at 1/6-1/5 of the main shell 1, wherein the compression limit is the length of the round rod 5, ensuring that the force is uniform and stable when the compression limit is reached, repeatedly pushing the explosive forward along the main shell 1 until the explosive is filled, compressing the compression spring in the compression device to the limit state, namely to the length of the round rod, and clamping the baffle plate 7 on the main shell 1 to realize the sealing of the explosive.
Claims (6)
1. A method for preparing a shaped charge from a bulk emulsion explosive, comprising the steps of:
(1) The method comprises the steps of designing and manufacturing an energy-gathering shell by utilizing the energy gathering effect of explosive explosion, wherein a bottom plate of a main shell (1) of the shell is concave, two rectangular plates (8) are arranged at the upper part of the main shell, the top and one side opening of the main shell (1) are not closed, and grooves with scales are formed in the rectangular plates (8);
(2) A liner (4) is arranged at the concave part of the bottom plate of the main shell (1);
(3) Designing a rectangular top plate (2), and embedding the top plate (2) into grooves corresponding to selected scales of two rectangular plates (8) according to the loading quantity of the bulk emulsion explosive;
(4) The method comprises the steps of designing a side plate (3) and a compression device, wherein the compression device consists of a spring (6) and a baffle plate (7) with a round rod (5) at one side, the spring (6) is sleeved on the round rod (5) and connected with the baffle plate (7), and the round rod (5) is cast on the outer side of the side plate (3);
(5) When the bulk emulsion explosive is filled in the main shell (1) and is filled in the 1/6-1/5 part of the main shell (1), the side plates (3) and the compression device are arranged in the concave part of the main shell (1), the springs (6) are compressed by the baffle plates (7), the explosive is repeatedly pushed forward along the main shell (1) until the explosive is filled, the springs (6) are compressed to a limit state after the explosive is filled, and the baffle plates (7) are blocked on the main shell (1) to realize the sealing of the explosive package.
2. The method for preparing the shaped charge by using the bulk emulsion explosive according to claim 1, wherein the main shell (1), the top plate (2), the side plates (3), the round bars (5) and the baffle plates (7) are made of styrene-butadiene-acrylonitrile copolymer.
3. A method of preparing a shaped charge from a bulk emulsion explosive according to claim 1, wherein the side plates (3) are perforated with small holes through which the leg wires of a detonating tube detonator (12) pass.
4. A method of preparing a shaped charge from a bulk emulsion explosive according to claim 1, wherein the base of the main housing (1) is concave to form a cone angle of 60 °.
5. A method of preparing a shaped charge from a bulk emulsion explosive according to claim 1, characterized in that the compression of the spring (6) to a limit state is the length of the round bar (5).
6. A method of preparing a shaped charge from a bulk emulsion explosive according to claim 1, wherein the liner (4) is formed from a metallic aluminium material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810505151.0A CN109084642B (en) | 2018-05-24 | 2018-05-24 | Method for preparing shaped charge by using bulk emulsion explosive |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810505151.0A CN109084642B (en) | 2018-05-24 | 2018-05-24 | Method for preparing shaped charge by using bulk emulsion explosive |
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| Publication Number | Publication Date |
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| CN109084642A CN109084642A (en) | 2018-12-25 |
| CN109084642B true CN109084642B (en) | 2023-05-30 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202853496U (en) * | 2012-10-23 | 2013-04-03 | 金诚信矿业管理股份有限公司 | Energy-gathering cartridge bag |
| CN103134403A (en) * | 2013-03-13 | 2013-06-05 | 中国水电顾问集团华东勘测设计研究院 | Underwater energy-gathered blasting device and blasting method |
| CN203908426U (en) * | 2014-05-26 | 2014-10-29 | 葛洲坝易普力股份有限公司 | Circular jet cutter |
| CN206160843U (en) * | 2016-09-09 | 2017-05-10 | 南京理工大学 | Device of linear water jet cutting ammunition |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8375859B2 (en) * | 2010-03-24 | 2013-02-19 | Southwest Research Institute | Shaped explosive charge |
-
2018
- 2018-05-24 CN CN201810505151.0A patent/CN109084642B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202853496U (en) * | 2012-10-23 | 2013-04-03 | 金诚信矿业管理股份有限公司 | Energy-gathering cartridge bag |
| CN103134403A (en) * | 2013-03-13 | 2013-06-05 | 中国水电顾问集团华东勘测设计研究院 | Underwater energy-gathered blasting device and blasting method |
| CN203908426U (en) * | 2014-05-26 | 2014-10-29 | 葛洲坝易普力股份有限公司 | Circular jet cutter |
| CN206160843U (en) * | 2016-09-09 | 2017-05-10 | 南京理工大学 | Device of linear water jet cutting ammunition |
Non-Patent Citations (1)
| Title |
|---|
| 双向线型聚能***切割大直径螺栓的试验研究;梁向前;张永哲;傅海峰;胡光川;;中国水利水电科学研究院学报;第4卷(第01期);第23-26页 * |
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| CN109084642A (en) | 2018-12-25 |
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