IL284028B2 - Exhaust pipe - Google Patents
Exhaust pipeInfo
- Publication number
- IL284028B2 IL284028B2 IL284028A IL28402821A IL284028B2 IL 284028 B2 IL284028 B2 IL 284028B2 IL 284028 A IL284028 A IL 284028A IL 28402821 A IL28402821 A IL 28402821A IL 284028 B2 IL284028 B2 IL 284028B2
- Authority
- IL
- Israel
- Prior art keywords
- cartridge
- propellant
- detonating
- metal
- explosive
- Prior art date
Links
- 239000003380 propellant Substances 0.000 claims description 34
- 239000002360 explosive Substances 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 13
- 230000000977 initiatory effect Effects 0.000 claims description 12
- 229910052755 nonmetal Inorganic materials 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 7
- 239000007769 metal material Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 2
- 229910001018 Cast iron Inorganic materials 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000010962 carbon steel Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- DTSBBUTWIOVIBV-UHFFFAOYSA-N molybdenum niobium Chemical compound [Nb].[Mo] DTSBBUTWIOVIBV-UHFFFAOYSA-N 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 229910052711 selenium Inorganic materials 0.000 claims description 2
- 239000011669 selenium Substances 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 239000011593 sulfur Substances 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 239000011435 rock Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 8
- 230000006378 damage Effects 0.000 description 6
- 238000004880 explosion Methods 0.000 description 4
- 230000035939 shock Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000000020 Nitrocellulose Substances 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000004200 deflagration Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 229920001220 nitrocellulos Polymers 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- SNIOPGDIGTZGOP-UHFFFAOYSA-N Nitroglycerin Chemical group [O-][N+](=O)OCC(O[N+]([O-])=O)CO[N+]([O-])=O SNIOPGDIGTZGOP-UHFFFAOYSA-N 0.000 description 1
- 239000000006 Nitroglycerin Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 229960003711 glyceryl trinitrate Drugs 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000009528 severe injury Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
- F24B1/00—Stoves or ranges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
- F24B3/00—Heaters not covered by group F24B1/00, e.g. charcoal braziers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Details Of Aerials (AREA)
Description
NON-DETONATING BLASTING TUBE
TECHNOLOGICAL FIELD The herein invention generally relates to devices and methods for improving
blasting efficacy.
BACKGROUND Conventional methods of rock breaking in mines utilize high energy explosives, often called detonating explosives. High energy explosives demolish the rock which can then be disposed.The issue with detonating explosives is that the explosion is pursued by a shockwave which may cause rock fragments to be catapulted from the explosion area. In case a pointed damage in a building is required, it is impossible to achieve with a detonating explosive since the shockwave is too brutal and will likely cause a massive damage to the surroundings.The issues associated with the conventional methods of rock breaking resulted in the development of non-detonating explosives, which function by guiding quickly expanding gases against the rock, thereby causing the rock to break and collapse without the massive shock wave. Such explosives are used by forming boreholes into the rock, inserting non-detonating material cartridges (commonly containing a propellant), into the boreholes and initiating the propellant inside the cartridges. In most cases, prior to ignition of the cartridge, the borehole have to be stemmed by padding sand or any other particulate like material, into the borehole after inserting the cartridge. The packed stemming material maintains a high pressure inside the borehole upon ignition of the propellant and the formation of the gas inside the hole. Failing to effectively steam the borehole may cause some of the gas to escape, and thereby reduce the pressure urged onto the rock.In some cases where a specific area of the rock needs to be ejected or where a breakage of a particular wall in a building is needed, a strong yet concentrated explosion is required. Also, drilling a borehole in a wall is not always an option is a war zone.
GENERAL DESCRIPTION Crowded building areas are a challenging arena for a military force, especially when civil population is involved. In some cases, military operation has to be conducted in an area which is densely packed with buildings; in such cases troops must extract a wall in order to keep moving forward or to get to a specific destination. Utilization of a detonating explosive is not an option since it can endanger soldiers and civilians. Non- detonating explosive plastic cartridges, even though they do not create a shockwave, exhibit a force of explosion that is strong enough to result in a severe damage to the building or even to the collapse thereof. Also, to fracture or damage a wall, the non- detonating cartridges must be placed inside a borehole drilled in the wall, which may be a challenging and complicated operation per se.To eliminate the need for drilling a borehole in an object (i.e., a rock or a wall) for placing a non-detonating material therein, which upon initiation, should cause a fracture in said object, and to impart to the non-detonating explosive detonating characteristics sufficient to cause a fracture in said object without inducing much damage to the surroundings, the inventors of the invention disclosed herein have developed a novel explosive device for inducing a fracture in an object or a surface to which the device is attached. Also provided by the herein disclosed invention is a device imparting detonating properties to a non-detonating propellant containing object, a method for imparting detonating properties to a non-detonating propellant containing object and a method for fracturing an object or a surface.In a first aspect, the invention provides an explosive device comprising a non- metal cartridge enclosed by a metallic tube, wherein the cartridge having a main body closed at both ends and comprising at least one propellant; the non-metal cartridge is of a non-metallic material selected to externally deform upon initiation of the propellant and cause formation of pressure inside the cartridge main body.The cartridge can be designed in any form known in the art which is capable to be contained inside a tube. However, the cartridge is in most cases in a form of cylinder.The non-metallic cartridge comprising a propellant which according to the herein invention shall have the widest meaning and include any appropriate gas producing material. The propellant can include a single type of material or multiple types of materials. Propellants of the invention are usually made of a low explosive material, i.e., compounds where the rate of decomposition proceeds through the material
at less than the speed of sound. The decomposition is propagated by a flame front (deflagration) which travels much slower through the explosive material than a shock wave of a high explosive. High explosive materials on the other hand are those materials that detonate, meaning that the explosive shock front propagates through the material at a supersonic (higher than the speed of sound) speed.In some cases, propellants of the invention may also include high explosive chemical compounds, however diluted and burnt in a controlled manner which is called deflagration rather than detonation.In some embodiments, the propellant according to the invention is a liquid or solid propellant. In some embodiments, the propellant is nitroglycerin.In some embodiments, the propellant is selected from nitrocellulose, ammonium nitrate and mixtures thereof.In some embodiments, the propellant is nitrocellulose, black powder and/or smokeless powder.In some embodiments, the device further comprises an initiation system capable of causing the propellant to produce gas. The initiation system of the invention is any standard system known in the art.As described above, propellants of the invention may include a low, high or a combination of low and high explosive materials. However, according to an embodiment of the invention, the cartridge does not comprise high explosive materials (i.e., detonating explosive material). In such embodiments, the propellant is a non- detonating explosive material.The metallic tube may be made of a ferrous or a non-ferrous metal. The ferrous metal may be selected from a cast iron, carbon steel, alloy steel and a stainless still. The stainless steel may include elements of carbon, nitrogen, aluminum, silicon, sulfur, titanium, nickel, copper, selenium, niobium molybdenum and combinations thereof.In some embodiments, the non-ferrous metal is selected from copper alloy, nickel alloy, aluminum alloy and other types of alloys.In a specific embodiment, the metallic tube is made of a stainless steel.The device of the invention is primarily utilized for fracturing an object or a surface. One of the most unique features of the invention is the ability thereof to produce damage or fracture to an object or a surface without the need for a borehole. As known in the art, most explosive devices which are utilized for breaking rock or walls
are initially placed into a borehole which is drilled into the object. In most cases, such a borehole is clogged with a solid material (e.g., soil) to contain the gases and pressure and increase the explosive effect. The device of the invention on the other hand does not need a borehole to properly operate. On the contrary, in a normal operation process, the device is placed or attached to the object or to a surface thereof or is used when in air, not contained.For example, after attaching the device to an object, the device is ready to be initiated. Without being bound by a specific mechanism or process, when initiating the device, gases are produced in the cartridge and pressure begins to build therein. Due to the pressure, the cartridge externally deforms and breaks to release the gasses into the lumen of the metallic tube. Gas concentration built up within the metallic tube causes an increase in the pressure within the metallic tube, exhibiting a destructive detonating effect not typical to a propellant. Thus, containing a cartridge of a propellant within a metal tube endows the device with detonating capabilities when the device is in air or is uncontained. In contrast, a device comprising only of a cartridge of a propellant demonstrates non-detonating properties and low energy when operated in air.The term “uncontained” in the context herein refers to the fact that in contrast to the non-detonating explosive devices known in the art which should be placed in a borehole and are therefore contained therein, the device of the invention need not be contained in a borehole to be endowed with detonating capabilities. When the device of the invention is attached to a surface of an object, at least a portion thereof is in direct contact with the atmosphere. This is opposed to a cartridge which is placed in a borehole and clogged with a solid material such as soil. In such case, the cartridge is fully contained inside the spaces created by the surroundings of the borehole and the soil above.Further provided herein is an explosive device as described herein, for use in fracturing an object or a surface, wherein the device is positioned in a way that at least a portion thereof is uncontained.In a specific embodiment, the device is positioned in a borehole.In some embodiments, the object or the surface is defined as a wall, whereinsuch a wall is selected amongst buttressing wall, a cavity wall, a compartment wall, a curtain wall, a dwarf wall, an external wall, a green wall, a trombe wall, a supported
wall, a solid wall, a separating wall, a rainscreen, a pile wall, a party wall, an internal load-bearing wall, a parapet wall, and a partition wall.In some embodiments, the wall is selected from an external wall, a partition wall, an internal load-bearing wall, and a separating wall.In a further aspect of the invention, there is provided a device for imparting detonating properties to a non-detonating propellant containing object, the device comprising a metallic tube enclosing the object, as disclosed herein. To operate the device, a sapper who is trained to handle explosive devices attaches the device to an object or a wall that needs to be removed, and upon initiation of the propellant, damage is inflicted on the object (e.g., a wall).In yet another aspect of the invention there is provided a method for imparting detonating properties to a non-detonating propellant containing object, the method comprising enclosing a non-detonating propellant containing object with a metallic tube, wherein the tube is optionally open at both ends.Also provided is a method for fracturing an object or a surface, the method comprising attaching the device as described herein to a surface of an object and initiating said device, to thereby cause an outward deformation of the metallic tube and fracture of the object or a surface which the device is attached to.Also provided is an explosive device comprising a metallic tube containing an intimately fitting a non-metal cartridge comprising a main body closed at both ends and comprising at least one propellant;the non-metal cartridge is of a non-metallic material selected to externally blast upon initiation of the propellant and formation of pressure inside the cartridge main body.The cartridge is typically shaped as a tube and is tightly held or intimately contained within the metallic tube. The terms “tightly held”, “intimately contained” and “tightly fitting” are interchangeable and refer to the fact that the shape and size (inner diameter) of the metal tube is selected to hold the cartridge such that the distance between the external walls of the cartridge and the inner walls of the metal tube are minimal. In other words, the contour of the external tube is selected to intimately follow the contour of the cartridge device to be contained therein.
Claims (12)
- -6-
- CLAIMS: 1. An explosive device comprising a non-metal cartridge enclosed by a metallic tube, wherein the cartridge comprising a main body closed at both ends and comprising at least one propellant;the non-metal cartridge is of a non-metallic material selected to externally blast upon initiation of the propellant and formation of pressure inside the cartridge main body.2. The device according to claim 1, wherein the cartridge is shaped as a tube and is of a size tightly fitting within the metallic tube.
- 3. The device according to claim I, wherein the device is for use in fracturing an object or a surface.
- 4. The device according to any one of the preceding claims, wherein the non-metal material is a plastic material.
- 5. The device according to any one of the preceding claims, wherein the metallic material is selected from a ferrous and a non-ferrous metal.
- 6. The device according to claim 5, wherein the ferrous metal is selected from a cast iron, a carbon steel, an alloy steel and a stainless still.
- 7. The device according to claim 6, wherein the stainless steel includes elements of carbon, nitrogen, aluminum, silicon, sulfur, titanium, nickel, copper, selenium, niobium molybdenum or combinations thereof.
- 8. An explosive device according to claim 1 for use in fracturing an object or a surface, wherein the device is positioned in a way that at least a portion thereof is uncontained.
- 9. A device for imparting detonating properties to a non-detonating propellant containing object, the device comprising a metallic tube enclosing the object.
- 10. A method for imparting detonating properties to a non-detonating propellant containing object, the method comprising enclosing the non-detonating propellant containing object within a metallic tube.
- 11. A method for fracturing an object or a surface, the method comprising attaching a device according to any one of claims 1 to 9 to a surface of an object and initiating said device, to thereby cause fracturing of the object or the surface which the device is attached to. -7-
- 12. An explosive device comprising a metallic tube containing an intimately fitting a non-metal cartridge comprising a main body closed at both ends and comprising at least one propellant;the non-metal cartridge is of a non-metallic material selected to externally blastupon initiation of the propellant and formation of pressure inside the cartridge main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL284028A IL284028B2 (en) | 2021-06-15 | 2021-06-15 | Exhaust pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL284028A IL284028B2 (en) | 2021-06-15 | 2021-06-15 | Exhaust pipe |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| IL284028A IL284028A (en) | 2023-01-01 |
| IL284028B1 IL284028B1 (en) | 2024-08-01 |
| IL284028B2 true IL284028B2 (en) | 2024-12-01 |
Family
ID=84783641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL284028A IL284028B2 (en) | 2021-06-15 | 2021-06-15 | Exhaust pipe |
Country Status (1)
| Country | Link |
|---|---|
| IL (1) | IL284028B2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0842391B1 (en) * | 1995-08-04 | 2003-06-25 | RockTek Limited | Method and apparatus for controlled small-charge blasting of hard rock and concrete by explosive pressurization of the bottom of a drill hole |
| US10801818B2 (en) * | 2013-04-26 | 2020-10-13 | Dana Raymond Allen | Method and device for micro blasting with reusable blasting rods and electrically ignited cartridges |
| CN212512754U (en) * | 2020-07-09 | 2021-02-09 | 徐建勇 | Cartridge case structure for explosive loading of blasting engineering |
-
2021
- 2021-06-15 IL IL284028A patent/IL284028B2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IL284028A (en) | 2023-01-01 |
| IL284028B1 (en) | 2024-08-01 |
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