CN113059049A - Novel annular energy-gathering cutter - Google Patents
Novel annular energy-gathering cutter Download PDFInfo
- Publication number
- CN113059049A CN113059049A CN202110335665.8A CN202110335665A CN113059049A CN 113059049 A CN113059049 A CN 113059049A CN 202110335665 A CN202110335665 A CN 202110335665A CN 113059049 A CN113059049 A CN 113059049A
- Authority
- CN
- China
- Prior art keywords
- explosive
- cutter
- energy
- shaped charge
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002360 explosive Substances 0.000 claims abstract description 52
- 239000000839 emulsion Substances 0.000 claims abstract description 24
- 239000000178 monomer Substances 0.000 claims abstract description 7
- 230000035515 penetration Effects 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- 229910052802 copper Inorganic materials 0.000 claims 1
- 239000010949 copper Substances 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000005520 cutting process Methods 0.000 abstract description 14
- 238000005474 detonation Methods 0.000 abstract description 14
- 239000002184 metal Substances 0.000 abstract description 9
- 229910000831 Steel Inorganic materials 0.000 abstract description 7
- 239000010959 steel Substances 0.000 abstract description 7
- 238000005422 blasting Methods 0.000 abstract description 5
- 238000004880 explosion Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000007762 w/o emulsion Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/007—Explosive cutting or perforating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention relates to a ring-shaped energy-gathering cutter for cutting a steel pipe, which comprises an annular shell, a metal shaped charge cover, an explosive fuse, emulsion explosive and a magnet base. The industrial emulsion explosive is used as a main explosive between the metal shaped charge cover and the shell, one end of the detonating cord extends into the emulsion explosive, the other end of the detonating cord is an exposed end, detonation waves generated by the two detonating cords are converged together to improve the pressure of a wave array, and the explosive power of the main explosive can be obviously enhanced. The exposed ends of the plurality of energy-gathering cutting monomers are connected together and are detonated by a detonator. Meanwhile, the metal shaped charge liner can more efficiently transmit the explosion energy to the inner layer of the shaped charge liner, and the penetration capability of the linear energy-gathering cutter is further improved. The invention has the advantages that: can be temporarily assembled at the blasting site, and the assembly is safe. The cutting capacity of the low-power industrial emulsion explosive can reach the corresponding cutting capacity of the high-energy explosive, and the emulsion explosive is low in price, easy to obtain, high in use safety and good in economic benefit.
Description
The technical field is as follows:
the invention relates to the field of special blasting, in particular to a novel annular energy-gathered cutter.
Background art:
the energy-gathering cutter is a blasting device which utilizes the hole energy-gathering effect of explosive to generate metal jet flow and is mainly used for separating target medium. The method utilizes the cavity at one end of the explosive package to concentrate the detonation energy of the explosive in the cavity direction so as to improve the local destructive effect of the explosive, namely after the explosive explodes, the high-temperature and high-pressure detonation products are rapidly scattered along the normal direction of the surface of the cavity of the explosive, and the detonation products collide and gather axially to form a high-speed and high-pressure jet flow due to the influence of the cavity. According to the charging condition, the cutters can be divided into two types, one type is to cut by using high-energy explosive, and the other type is to cut by using low-energy emulsion explosive. Aiming at steel structure buildings, a high-energy explosive cutter is usually selected to achieve a good cutting effect, but the high-energy explosive is expensive in price and high in sensitivity, and cannot be used in a large amount in engineering. The linear energy-gathering cutter manufactured by the emulsion explosive is low in price and safe in use, but the explosion velocity and the explosion pressure of the emulsion explosive are low, and the explosion pressure can only reach one sixth of that of high-energy explosive.
Most of the prior art energy gathering cutters adopt high explosive, but the impact sensitivity of the high explosive is too high, so that the energy gathering cutters are not safe. The emulsion explosive is a water-in-oil emulsion type water-resistant industrial explosive prepared by using an emulsion technology, and the impact sensitivity of the emulsion explosive is far lower than that of a simple substance high explosive because the water content of the emulsion explosive is more than 9%. It is also very safe in the field use.
The invention content is as follows:
the purpose of the invention is as follows: the industrial emulsion explosive with low price and safe use is used as the main explosive, on one hand, the detonation waves of two detonating cords are converged to improve the pressure of a wave array, on the other hand, the penetration capability is improved through the metal shaped charge cover, and the cutting of the emulsion explosive linear energy-gathering cutter to a hard steel structure is realized.
Two detonating cords with high detonation velocity and a certain distance are used for detonating the emulsion explosive with low detonation velocity, when the detonation velocity of the detonating cord is more than 1.2 times of that of the explosive with low detonation velocity, two detonation wave fronts with an included angle less than 120 degrees can be generated in the explosive with low detonation velocity, when the two detonation wave fronts collide together, oblique reflection and even Mach reflection can be generated, the detonation pressure enhancement effect on the explosive with low detonation velocity is very obvious, and the cutting capability of the energy-gathered jet generated by pushing the shaped charge cover can be equivalent to that of a high-energy explosive cutter.
Due to the high safety of the emulsion explosive, the single bodies can be temporarily assembled on the blasting site. Any plurality of energy-gathering cutting monomers can be fixed on the outer wall of the steel pipe, then the exposed ends of the detonating cords on the cutting monomers are connected, and the detonating cords are connected with the detonators. When in use, only the detonator is required to be detonated.
The invention has the advantages that: (1) the shell of the linear energy-gathering cutter and the liner both adopt linear structures, so that the process is simple and the batch production is convenient; (2) the emulsion explosive is used as main charge, so that the price is low and the use is safe; (3) two detonating cords are used for detonating and a metal shaped charge liner is adopted, so that the cutting capability of the industrial emulsion explosive cutter is improved, and the cutting of the steel pipe can be completed; (4) the energy-gathered cutting monomer can be temporarily assembled on the blasting site, and the assembly is safe, convenient and reliable.
Description of the drawings:
FIG. 1 is a block diagram of a novel annular shaped charge cutter.
FIG. 2 is a block diagram of a novel annular shaped cutter unit.
Fig. 3 is a three-dimensional view of a ring shaped concentrator cutter, wherein fig. (a) is a front view, fig. (b) is a right side view, and fig. (c) is a top view.
In the figure: 1-a detonating cord; 2-an emulsion explosive; 3-a housing; 4-metal shaped charge holder; 5-elastic soft rope; 6-magnet base
The specific implementation mode is as follows:
the present invention will be described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 and 2, the annular shaped cutter is a novel annular shaped cutter which can be assembled by any number of single bodies. One energy-gathering cutting monomer comprises a metal liner 4, a shell 3 and a detonating cord 1, wherein the section of the liner is wedge-shaped, and the lower end of the metal liner is fixed with a magnet base. The housing 3 is a linear structure, which is machined from a pvc pipe.
And filling the emulsion explosive into the cutter, aligning the top of the shaped charge liner to the top of the wedge-shaped groove, and slightly extruding the shaped charge liner to ensure that the emulsion explosive is fully contacted with the back of the shaped charge liner. The cutter is tightly attached to the steel to be cut, and the single body is fixed on the outer wall of the steel pipe through the elastic soft rope 5 and the magnet base 6 so as to fix the cutter. One end of the detonating cord 1 extends into the emulsion explosive 2, the other end of the detonating cord 1 is an exposed end, the exposed ends of the detonating cords 1 of all the energy-gathering cutting monomers are connected, and the joint is connected to the detonator. And binding a detonator with an adhesive tape on the part of the two detonating cords exceeding the length of the cutter, and connecting the detonator with the exploder for explosion.
Claims (6)
1. A novel annular energy gathering cutter is characterized in that: the novel annular energy gathering cutter can be formed by serially connecting and fixing a plurality of energy gathering cutters with the same structure, wherein one energy gathering cutter monomer comprises a liner, a magnet base, an elastic soft rope, a shell and two detonating cords, and the two detonating cords are symmetrically arranged at the edge of the top; the cross section of the shaped charge liner is of a V-shaped structure; the section of the shell is rectangular, the shell wraps the explosive charge, and the shell is provided with two detonating devices and is connected with the explosive charge; the explosive is filled in a cavity between the liner and the shell and is filled by using emulsion explosive.
2. The novel annular shaped charge cutter of claim 1, wherein: the taper angle of the liner is 45-60 degrees, the wall thickness is 2-3 mm, and the PVC shell can well collect explosive energy and improve penetration capability.
3. The novel annular shaped charge cutter of claim 1, wherein: the cross section of the liner is wedge-shaped.
4. The novel annular shaped charge cutter of claim 1, wherein: any plurality of energy gathering cutter units can be connected into a ring through springs, and different schemes can be made according to actual conditions.
5. A novel annular shaped charge cutter as claimed in claims 2 and 3 wherein: the liner can be made of pure iron or red copper, and the shell is made of PVC material.
6. The novel annular shaped charge cutter of claim 1, wherein: the explosive is emulsion explosive, and is safe, convenient and reliable when in use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110335665.8A CN113059049A (en) | 2021-03-29 | 2021-03-29 | Novel annular energy-gathering cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110335665.8A CN113059049A (en) | 2021-03-29 | 2021-03-29 | Novel annular energy-gathering cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113059049A true CN113059049A (en) | 2021-07-02 |
Family
ID=76564346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110335665.8A Pending CN113059049A (en) | 2021-03-29 | 2021-03-29 | Novel annular energy-gathering cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113059049A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114558930A (en) * | 2022-04-11 | 2022-05-31 | 安徽理工大学 | Energy-gathered cutting device with variable explosion height |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2002952984A0 (en) * | 2002-11-28 | 2002-12-12 | Scott Allman | Forced entry system |
| CN203908426U (en) * | 2014-05-26 | 2014-10-29 | 葛洲坝易普力股份有限公司 | Circular jet cutter |
| KR101515919B1 (en) * | 2014-08-20 | 2015-05-04 | 주식회사 코리아카코 | Underwater Steel Cutting Method using the Shape Charge Loading Container and its Attachment Method |
| CN105444623A (en) * | 2015-12-15 | 2016-03-30 | 中国石油天然气集团公司 | Energy-gathered cutting device for all-size gas blasting test of gas transmission steel pipe |
| CN111715767A (en) * | 2020-06-29 | 2020-09-29 | 安徽理工大学 | Metal round tube energy gathering cutter |
| CN112212749A (en) * | 2020-10-16 | 2021-01-12 | 安徽理工大学 | Linear energy-gathering cutter for separating steel materials |
-
2021
- 2021-03-29 CN CN202110335665.8A patent/CN113059049A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2002952984A0 (en) * | 2002-11-28 | 2002-12-12 | Scott Allman | Forced entry system |
| CN203908426U (en) * | 2014-05-26 | 2014-10-29 | 葛洲坝易普力股份有限公司 | Circular jet cutter |
| KR101515919B1 (en) * | 2014-08-20 | 2015-05-04 | 주식회사 코리아카코 | Underwater Steel Cutting Method using the Shape Charge Loading Container and its Attachment Method |
| CN105444623A (en) * | 2015-12-15 | 2016-03-30 | 中国石油天然气集团公司 | Energy-gathered cutting device for all-size gas blasting test of gas transmission steel pipe |
| CN111715767A (en) * | 2020-06-29 | 2020-09-29 | 安徽理工大学 | Metal round tube energy gathering cutter |
| CN112212749A (en) * | 2020-10-16 | 2021-01-12 | 安徽理工大学 | Linear energy-gathering cutter for separating steel materials |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114558930A (en) * | 2022-04-11 | 2022-05-31 | 安徽理工大学 | Energy-gathered cutting device with variable explosion height |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111928738B (en) | Composite warhead device with adjustable damage power for killing broken armor | |
| CN110823007B (en) | Dual gain warhead | |
| CN109211037A (en) | A kind of underwater explosion cutting component and underwater explosion cutting method | |
| CN112212749A (en) | Linear energy-gathering cutter for separating steel materials | |
| CN105444623A (en) | Energy-gathered cutting device for all-size gas blasting test of gas transmission steel pipe | |
| CN110657722A (en) | Hole-by-hole initiation method for complex environment foundation pit excavation | |
| CN110671981A (en) | Smooth blasting method for vertical shaft tunneling in high stress environment | |
| CN113059049A (en) | Novel annular energy-gathering cutter | |
| CN110894179A (en) | Multilayer composite metal shell micro-explosion cable | |
| CN108917508A (en) | Imderwater cutting device | |
| CN203259076U (en) | Simple shock-conducting tube exciter and initiation system | |
| CN111551087A (en) | Linear energy-gathering cutter influenced by parallel pipelines and test method | |
| CN203385336U (en) | Blast vibration absorbing belt | |
| CN108867416B (en) | The large-scale circumferential cutter device of steel bridge cable member Double-layer flexible explosion | |
| CN114963904B (en) | Tunnel blasting hole structure based on directional energy-gathering slotted holes and blasting method | |
| CN110243244A (en) | It is a kind of based on Detonation waveform modulation circumferential slit without cavity liner air gap CUMULATIVE BLASTING loading method | |
| CN212538987U (en) | Explosive cutting verifiable cumulative cutter influenced by parallel pipelines | |
| CN208936889U (en) | Underwater explosion cutter device | |
| CN211824095U (en) | Electronic detonator protection device | |
| CN211262001U (en) | Explosive cutting tool for drill pipe and oil pipe casing | |
| CN113137894A (en) | Energy-containing composite shaped charge liner cutter structure | |
| CN102305058B (en) | Novel synergistic shattering perforation series charging device | |
| CN219890298U (en) | Giant stone roadblock breaking device based on energy-gathering jet flow | |
| CN110953942A (en) | Electronic detonator protection device | |
| CN205940314U (en) | Non -contact gathers can ignitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |