EP2122066A1 - Controlled triggering cutting off device - Google Patents
Controlled triggering cutting off deviceInfo
- Publication number
- EP2122066A1 EP2122066A1 EP08761811A EP08761811A EP2122066A1 EP 2122066 A1 EP2122066 A1 EP 2122066A1 EP 08761811 A EP08761811 A EP 08761811A EP 08761811 A EP08761811 A EP 08761811A EP 2122066 A1 EP2122066 A1 EP 2122066A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reservoir
- cutting device
- trigger
- housing
- circuit
- 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.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/08—Wrecking of buildings
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/04—Blasting cartridges, i.e. case and explosive for producing gas under pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C11/00—Electric fuzes
- F42C11/06—Electric fuzes with time delay by electric circuitry
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/02—Particular applications of blasting techniques for demolition of tall structures, e.g. chimney stacks
Definitions
- Trigger device with controlled release.
- the invention relates to a device for removing concrete workpieces, comprising a reservoir in which an overpressure is generated by a gasogenic effect following a chemical reaction occurring after a predetermined delay between a chemical compound and an aqueous solution, the reservoir containing the aqueous solution, and being secured to an envelope, which comprises a first storage compartment for the chemical compound, and a cover being arranged between the first housing and the reservoir to form a complete seal between the chemical compound and the aqueous solution .
- patent WO-0036228 describes a copying element comprising a bottle having a flat closed bottom and a lateral envelope forming an acute angle with the bottom.
- a rigid tube connected to a connecting tubular tip formed at the top of the casing serves as a supply channel of the demolition agent inside the bottle.
- This type of coppicing element is not practical to implement, since requires several operations of implementation: the establishment of the elements of coppicing, then the introduction of the demolition agent into the flasks through hollow rigid tubes. These two operations take time on the construction sites and require precautions of use, in particular for the setting up of the agent of demolition.
- the known expansive agents are often mixtures comprising water and quicklime, and generally adjuvants, the adjuvants being adapted according to the temperature conditions of the concrete or the type of work to be carried out.
- US-4571124 describes a slurry containing 30% by weight of powder and 70% by weight of water, placed in hollow protective tubes arranged in a confined space of the concrete part to be demolished.
- the powder comprising the slurry comprises calcium aluminate ferrite, ((CaO) 4 Al 2 O 3 Fe 2 O 3 ), free lime (CaO), magnesium oxide (MgO) and a retarder, for example boron.
- the expansion of the grout generates cracks in the concrete building at a predetermined level.
- the document JP 08 285500 relates to a tank in which an overpressure is generated by a gasogenic effect following a chemical reaction between a chemical compound and an aqueous solution housed in two chambers separated from each other by a lid. The reaction occurs when the tank is thrown against an object to burst.
- the object of the invention is to provide a splitting device for controlled and reliable triggering of the chemical reaction independently of environmental constraints, valid for any type of concrete structure, and simple to implement.
- the copying device is characterized in that the envelope comprises a second housing containing an electronic trigger, an actuator being controlled by the trigger to explode the lid after a predetermined time delay, causing said chemical reaction inside the tank.
- the priming of the actuator occurs at a precise moment fixed by the delay of the electronic release. A delay of 3 to 4 days must elapse between activation of the device and initiation of the chemical reaction.
- the cap is part of a cap mounted to seal with the casing.
- the plug has an orifice with an internal thread, intended to cooperate by screwing with a thread externally extending along a connecting end of the tank.
- the actuator of the electronic release comprises a pyrotechnic priming head made active during the discharge of a capacitor to explode the lid.
- the pyrotechnic priming head can be placed on the electronic board of the release or directly on the cover.
- the trigger further comprises a delay circuit composed of a quartz clock and a microcontroller for driving a switching circuit connected in series with the actuator. Activation of the delay of the trip unit and the charge of the capacitor takes place by means of an arming circuit comprising a magnetic switch associated with two permanent magnets of opposite polarities, one of the magnets being fixed and the other being detachable. by a pin.
- the reservoir closed by the cap preferably comprises a cavity delimited by two frustoconical walls having a common outer contour and forming an acute angle between them.
- the radial components generated by the reaction forces are the strongest in the vicinity of the outer contour so as to cause a horizontal fracture of the concrete in the plane passing through the contour and determining the area of coppicing.
- the action of the vertical components causes a slight movement of lifting the concrete block during the coppicing.
- FIG. 1 is a vertical sectional view of the copying device according to the invention, the reservoir being assembled to the envelope enclosing the electronic trigger;
- FIG. 2 shows a perspective view of the reservoir;
- FIG. 3 is a view of the casing of Figure 1, after unscrewing and removal of the lower reservoir;
- Figure 4 shows a vertical sectional view of Figure 3
- FIG. 6 is a variant of the reservoir of FIG.
- a device for removing concrete workpieces in particular in the form of piles, bars or molded walls, comprises a reservoir 10 in which a large quantity of gas is generated, so as to cause an overpressure inside the tank 10. This overpressure burst the tank, and generates reaction forces capable of causing cracking of the concrete.
- the copying elements are put in place, either before the casting operation, preferably by means of a positioning frame, or introduced into the fresh concrete after the casting operation, preferably by means of a lost rod. or recoverable.
- the gas causing the overpressure is produced by the chemical reaction between a chemical compound and an aqueous solution.
- the chemical compound is preferably selected from calcium, alkali metals (lithium, potassium and sodium), alkali metal carbonates and calcium carbide and calcium carbonate.
- the gas generated is hydrogen according to the reaction: Ca + H 2 O- * 1/2 H 2 + Ca (OH).
- a reservoir 10 of the type represented in FIGS. 1 and 2 is preferably used.
- the reservoir 10 made of plastics material, for example made of polyethylene, has an internal cavity 13 delimited by two walls, lower 14 and upper 15, frustoconical, having a common external contour 16 and making an acute angle ⁇ , for example between 5 ° and 60 °.
- the bottom wall 14 is provided with a fastening element 17, projecting, for fixing the reservoir 10 on a metal structure in the fresh concrete to ensure its maintenance.
- the upper wall 15 is extended by a nozzle 18 having an external thread 19 to be screwed into an orifice 20 with internal thread 21 of the plug 12A to seal the tank 10 to the envelope 12 of the electronic release 11.
- the plug 12A is separated from the casing 12 by a cover 23 having a predetermined thickness, and forming a separation wall to ensure total sealing of the calcium with respect to the water as long as the tripping order does not It is delivered by the electronic release 11.
- a cover 23 having a predetermined thickness, and forming a separation wall to ensure total sealing of the calcium with respect to the water as long as the tripping order does not It is delivered by the electronic release 11.
- the envelope 12 is subdivided into a first housing 24 for storing the cartridge 25 of the chemical compound, for example based on calcium, and a second housing 26. containing the electronic release 11.
- the components of the electronic trip unit 11 are connected to a printed circuit board placed vertically in the second housing 26.
- the trip unit comprises an arming circuit 27, a DC power supply 28, for example a 3V battery, a delay circuit 29, a switching circuit 30, a power reserve circuit 31, and an actuator 32.
- the charging circuit 27 comprises, by way of example, a magnetic switch 33 of the Reed relay type with a flexible contact blade, associated with two permanent magnets 34, 35 placed side by side in the upper part of the envelope 12. one of the magnets 34 is fixed, and the other 35 is detachable following the actuation of a pin 36.
- the two magnets 34, 35 are identical, and have opposite magnetic polarities. In the presence of the two magnets 34, 35, their magnetic fields are compensated and the switch 33 is in the open state. The arming consists in removing the second magnet 35 by pulling on the pin 36, and causing the switch 33 to go into the state closed.
- any other type of switch in particular electromechanical or electronic.
- the 3V battery of the power supply 28 is electrically connected in series with the switch 33 and with a resistor R1.
- the energy reserve circuit 31 is formed by a storage capacitor C1 of the electrolytic type connected in parallel between the resistor R1 and the negative pole constituting the mass of the power supply 28.
- the delay circuit 29 is composed of a clock 37 and a microcontroller 38.
- the clock 37 is formed by a crystal 39 connected on the one hand to the microcontroller 38 and on the other hand to ground by two decoupling capacitors C3, C4.
- the switching circuit 30 comprises a power transistor Q2, for example of the bipolar NPN type, whose collector is connected in series with the actuator 32, and whose emitter is electrically connected to ground.
- the base of the transistor Q2 is connected to the output S1 of the microcontroller 38 through a resistor R2. Any other type of switching component can of course be used.
- the actuator 32 is composed of a pyrotechnic ignition head 40 and the plastic cover 23 which it will explode during the discharge of the capacitor C1.
- the pyrotechnic priming head 40 may be of the N28BR type from the Davey Bickford company, and is arranged either on the electronic board or directly on the cover 23. In the latter case, an electrical connection (not shown) connects the board at the priming head 40.
- the operation of the electronic trigger 11 is as follows: The removal of the pin 36 causes the activation and closure of the switch 33 causing the start of the tripping cycle.
- the output of the switch 33 is connected by an electrical connection L1 to the power supply terminal B1 of the microcontroller 38 so as to deliver a voltage adapted to the delay circuit 29.
- the battery of the power supply 28 initiates the delay and charges simultaneously the capacitor C1 of the energy reserve circuit 31.
- An additional capacitor C4 is connected between the supply terminal B1 and ground to continue to supply the microcontroller 38 after switching of the transistor Q2.
- the output S1 of the microcontroller 38 delivers a tripping order to the transistor Q2, which switches from the off state to the on state.
- the capacitor C1 then discharges into the pyrotechnic priming head 40, which bursts causing an overpressure inside the casing 12.
- the cap 23 gives way as soon as the pressure exceeds a predetermined threshold, for example 5 bars.
- the calcium 25 stored in the first housing 24 will fall into the tank 10 to mix with the water by causing a chemical reaction with a gaseous release of hydrogen inside the closed tank .
- the shape of the reservoir 10 makes it possible to concentrate the reaction forces F resulting from the expansion effect when the chemical compound is released by the electronic release 11, and mixes with the water contained in the reservoir 10 Since the pressure is an inverse function of the surface, the radial components F1 generated by the reaction forces are the strongest in the vicinity of the outer contour 16, common to the two walls 14 and 15. This results in a horizontal fracture of the concrete in the plane passing through the outline external 16, which determines the area of clearing 22. The action of the vertical components F2 can cause a slight upward movement of the concrete block during the coppicing.
- the variation in temperature has very little influence on the expansion effect and there is no need to change the amount and the content of the chemical compound and / or the aqueous solution as a function of temperature.
- the tank 10 used for the coppicing may also be of another form than that described above.
- the type of tank described in the patent WO-0036228 may also be used in the context of the invention.
- FIG. 6 It is also possible to make use of the tank 10 illustrated in FIG. 6, in which the profile is wider and flatter than that of FIG. 2.
- the lower and upper faces are parallel and subjected respectively to a pressure in compression ( arrow F4), and a tension in tension (arrow F3).
- the direction of the crack after expansion extends horizontally (arrow F5), and passes through the contour 16 as in Figure 1.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Processing Of Solid Wastes (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Harvester Elements (AREA)
- Slot Machines And Peripheral Devices (AREA)
- External Artificial Organs (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Air Bags (AREA)
- Advance Control (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL08761811T PL2122066T3 (en) | 2007-02-23 | 2008-01-29 | Triggering control for cutting off device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0701314A FR2913034B1 (en) | 2007-02-23 | 2007-02-23 | INSPECTION DEVICE WITH CONTROLLED TRIGGERING |
PCT/FR2008/000100 WO2008110682A1 (en) | 2007-02-23 | 2008-01-29 | Controlled triggering cutting off device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2122066A1 true EP2122066A1 (en) | 2009-11-25 |
EP2122066B1 EP2122066B1 (en) | 2010-08-18 |
Family
ID=38565110
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08761811A Not-in-force EP2122066B1 (en) | 2007-02-23 | 2008-01-29 | Triggering control for cutting off device |
Country Status (17)
Country | Link |
---|---|
US (1) | US8025464B2 (en) |
EP (1) | EP2122066B1 (en) |
JP (1) | JP5307035B2 (en) |
KR (1) | KR101401372B1 (en) |
CN (1) | CN101617085B (en) |
AT (1) | ATE478213T1 (en) |
BR (1) | BRPI0807821A2 (en) |
DE (1) | DE602008002230D1 (en) |
ES (1) | ES2350898T3 (en) |
FR (1) | FR2913034B1 (en) |
HK (1) | HK1138892A1 (en) |
MX (1) | MX2009007978A (en) |
PL (1) | PL2122066T3 (en) |
PT (1) | PT2122066E (en) |
RU (1) | RU2455425C2 (en) |
WO (1) | WO2008110682A1 (en) |
ZA (1) | ZA200905192B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5414348B2 (en) * | 2009-05-07 | 2014-02-12 | 日立造船株式会社 | Cartridge, destruction device and cartridge kit |
CN115559560B (en) * | 2022-10-08 | 2023-07-07 | 江汉大学 | Method for dismantling profile steel concrete upright post |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
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DE1043155B (en) * | 1957-04-17 | 1958-11-06 | Diehl G M B H | Electric percussion fuse |
US3432977A (en) * | 1967-03-08 | 1969-03-18 | Us Navy | Application of shaped charge to earth anchor |
JPS5221046B2 (en) * | 1971-11-16 | 1977-06-08 | ||
JPS5144335B2 (en) * | 1972-01-20 | 1976-11-27 | ||
US3960082A (en) * | 1974-01-29 | 1976-06-01 | Fedor Ignatievich Sloevsky | Down-the-hole device for breaking rock, concrete and reinforced concrete by pulsewize high liquid pressure |
JPS5991214A (en) * | 1982-11-18 | 1984-05-25 | Sumitomo Cement Co Ltd | Head treatment work of on-site pile |
JPS6099355A (en) * | 1983-11-07 | 1985-06-03 | 吉澤石灰工業株式会社 | Blasting method combining expansible breaking agent |
EP0162276A3 (en) * | 1984-04-18 | 1986-12-30 | Karam, Nabih B. | Expansion mains activatable by water |
JPH0335799Y2 (en) * | 1984-10-13 | 1991-07-30 | ||
US4712477A (en) * | 1985-06-10 | 1987-12-15 | Asahi Kasei Kogyo Kabushiki Kaisha | Electronic delay detonator |
CN87102234A (en) * | 1987-03-25 | 1987-08-19 | 铁道部第二工程局 | Blasting technique with indirect energy |
JPH02145680A (en) * | 1988-11-28 | 1990-06-05 | Nippon Oil & Fats Co Ltd | Moisture-expansive demolition agent composition |
JPH06295649A (en) * | 1993-04-12 | 1994-10-21 | Tdk Corp | Permanent magnet switch |
JPH08285500A (en) * | 1995-04-12 | 1996-11-01 | Japan Steel Works Ltd:The | Method and apparatus for explosion |
FR2787131B1 (en) | 1998-12-11 | 2001-03-16 | Dominique Fonfrede | RECEPTION DEVICE FOR CONCRETE STRUCTURES |
RU2174110C2 (en) * | 1999-11-29 | 2001-09-27 | ШМЕЛЕВ Владимир Михайлович | Explosive charge and method for blastings |
RU2200295C2 (en) * | 2000-02-15 | 2003-03-10 | ОАО "Восточный научно-исследовательский горнорудный институт" | Shaped charge |
RU2190185C2 (en) * | 2000-02-17 | 2002-09-27 | ООО "Научно-производственный центр "Квазар-ВВ" | Quasar-method for dismounting of buildings, structures and building constructions |
JP4006277B2 (en) * | 2002-07-02 | 2007-11-14 | 旭化成ケミカルズ株式会社 | Electronic detonator |
RU2267077C1 (en) * | 2004-06-09 | 2005-12-27 | Институт химической физики им. Н.Н. Семенова РАН (ИХФ РАН) | Explosive charge and method for conduction of blasting operations (modifications) |
RU2276319C2 (en) * | 2004-08-16 | 2006-05-10 | Российская Федерация, от имени которой выступает государственный заказчик - Министерство Российской Федерации по атомной энергии - Минатом РФ | Device for initiation |
CN2825746Y (en) * | 2005-03-22 | 2006-10-11 | 黎宁生 | Pile head cutting machine |
-
2007
- 2007-02-23 FR FR0701314A patent/FR2913034B1/en not_active Expired - Fee Related
-
2008
- 2008-01-29 PT PT08761811T patent/PT2122066E/en unknown
- 2008-01-29 PL PL08761811T patent/PL2122066T3/en unknown
- 2008-01-29 ES ES08761811T patent/ES2350898T3/en active Active
- 2008-01-29 MX MX2009007978A patent/MX2009007978A/en active IP Right Grant
- 2008-01-29 RU RU2009135412/03A patent/RU2455425C2/en not_active IP Right Cessation
- 2008-01-29 DE DE602008002230T patent/DE602008002230D1/en active Active
- 2008-01-29 EP EP08761811A patent/EP2122066B1/en not_active Not-in-force
- 2008-01-29 CN CN2008800057500A patent/CN101617085B/en not_active Expired - Fee Related
- 2008-01-29 JP JP2009550740A patent/JP5307035B2/en not_active Expired - Fee Related
- 2008-01-29 US US12/449,195 patent/US8025464B2/en not_active Expired - Fee Related
- 2008-01-29 KR KR1020097017498A patent/KR101401372B1/en not_active IP Right Cessation
- 2008-01-29 AT AT08761811T patent/ATE478213T1/en active
- 2008-01-29 BR BRPI0807821-1A patent/BRPI0807821A2/en active Search and Examination
- 2008-01-29 WO PCT/FR2008/000100 patent/WO2008110682A1/en active Application Filing
-
2009
- 2009-07-24 ZA ZA200905192A patent/ZA200905192B/en unknown
-
2010
- 2010-06-07 HK HK10105556.3A patent/HK1138892A1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2008110682A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN101617085B (en) | 2011-03-30 |
JP5307035B2 (en) | 2013-10-02 |
EP2122066B1 (en) | 2010-08-18 |
KR20090119762A (en) | 2009-11-19 |
JP2010519496A (en) | 2010-06-03 |
ES2350898T3 (en) | 2011-01-28 |
ATE478213T1 (en) | 2010-09-15 |
PL2122066T3 (en) | 2011-02-28 |
FR2913034B1 (en) | 2009-05-22 |
ZA200905192B (en) | 2010-07-28 |
FR2913034A1 (en) | 2008-08-29 |
BRPI0807821A2 (en) | 2014-08-05 |
KR101401372B1 (en) | 2014-05-29 |
HK1138892A1 (en) | 2010-09-03 |
CN101617085A (en) | 2009-12-30 |
DE602008002230D1 (en) | 2010-09-30 |
RU2455425C2 (en) | 2012-07-10 |
US20100067990A1 (en) | 2010-03-18 |
PT2122066E (en) | 2010-11-16 |
RU2009135412A (en) | 2011-03-27 |
US8025464B2 (en) | 2011-09-27 |
MX2009007978A (en) | 2009-09-15 |
WO2008110682A1 (en) | 2008-09-18 |
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