EP2456986B2 - Dispositif de commande d'un vérin pneumatique - Google Patents

Dispositif de commande d'un vérin pneumatique Download PDF

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Publication number
EP2456986B2
EP2456986B2 EP10740381.8A EP10740381A EP2456986B2 EP 2456986 B2 EP2456986 B2 EP 2456986B2 EP 10740381 A EP10740381 A EP 10740381A EP 2456986 B2 EP2456986 B2 EP 2456986B2
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EP
European Patent Office
Prior art keywords
cylinder
shaft
valve
control device
pressure
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.)
Active
Application number
EP10740381.8A
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German (de)
English (en)
French (fr)
Other versions
EP2456986A1 (fr
EP2456986B1 (fr
Inventor
Patrick Bunel
Thierry Duffour
Jacques Libet
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Asco SAS
Original Assignee
Asco SAS
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Publication date
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Publication of EP2456986B1 publication Critical patent/EP2456986B1/fr
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/14—Devices for feeding or crust breaking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/26—Locking mechanisms
    • F15B15/261—Locking mechanisms using positive interengagement, e.g. balls and grooves, for locking in the end positions

Definitions

  • the present invention relates to a system comprising a jack and a device for controlling the pneumatic jack.
  • the context of the invention is that of pneumatic automatisms for the manufacturing industry and the process industries, in particular for aluminum smelters.
  • the invention relates to a system comprising a device for controlling a jack and a jack and more particularly a system comprising a device for controlling a crusher breaking cylinder and the jack.
  • crush-breakers are used in steel and aluminum plants to break the surface crust formed on the surface of a molten metal, the break crusher cylinder is then used to form a hole in this crust allowing incorporate additives.
  • the forces used can be significant, depending on the thickness and stiffness of the crust formed, it is the same during the ascent of the cylinder to "unhook" the slag and residues glued to the chisel, which requires the use of a large cylinder. If the formed crust is less thick or more friable the maximum breaking stress, or cleaning, will not be reached. As a result, the maximum pressurization will not be necessary in this case and a lower pressure will allow a reduction in consumption and thus a significant source energy saving.
  • AU 27128/84 describes such a control device using a 5/2 distributor, a pressure reduction valve and a 3/2 valve controlled directly by a programmable industrial controller.
  • a sensor can detect the end of the thrust and inform the controller.
  • the present invention aims in particular to provide a system comprising a control device of a jack and a cylinder for achieving energy savings, in particular by adapting the feed pressure to the effort just needed to break the crust and reassemble the cylinder by cleaning the chisel.
  • a system according to the invention is defined in claim 1.
  • the mechanical locking means may comprise a bolt adapted to cooperate with a stop means provided on a finger integral with the rod of the jack.
  • the stop means may be a groove or a shoulder.
  • the bolt may include an orifice in which can penetrate the finger.
  • the probe can cooperate with an inclined surface provided on a trigger adapted to cooperate with the rod.
  • the device is integrated in the cylinder body.
  • the device can allow the adaptation of the supply pressure to the force just needed to break a resistance and reassemble the cylinder by breaking any friction forces of the application.
  • the device may comprise means for detecting the low position of the rod by electrical contact between the chisel and the metal.
  • the exhaust valve can include a flow limiter.
  • the control device is schematically represented on the figure 1 .
  • the cylinder 1 having a rod 2 integral with a piston 3.
  • the cylinder has in the lower part an orifice 4 and in the upper part an orifice 5.
  • the lower end of the rod 2 is integral with a chisel 6.
  • the upper part of the piston 3 comprises a finger 7 provided with a groove 7a.
  • the groove 7a is adapted to cooperate with the bolt 8a mu by the spring 15 of a locking device 8.
  • the chisel is above the surface M of the molten metal.
  • the surface M of the molten metal is electrically connected to the control part of a control device 10 via an automaton A.
  • the control device also comprises a 5/2 type distributor 9.
  • the pressure inlet of the distributor 9 feeds a valve 3/2 11, while the orifice 5 of the cylinder 1 is connected to the exhaust of the distributor 9.
  • the pressure inlet feeds the orifice 5, the orifice 4 being exhausted.
  • the valve 11 is shown in a position where the slide is in a position 11c allowing the outlet of the lower chamber of the cylinder 1 through the orifice 4
  • the distributor 9, the locking device 8 and the valve 11 are controlled by the control device 10.
  • the cylinder is then at rest in the high position.
  • the steering device is shown Fig. 1 with its drawer in a position 10b where the pressure supply is blocked while the pipe to the locking device 8, the distributor 9 and the valve 11 is exhausted. In another position 10a, the pipe towards the locking device 8, the distributor 9 and the valve 11 is connected to the pressure inlet.
  • valve 11 is controlled mechanically by means of a probe 11a.
  • the control device 10 makes it possible to cause the slide of the valve 11 to be lowered, but the feeler 11a is able, in contact with the piston 3, to control the raising of the slide of the valve 11.
  • a second step when the chisel 6 comes into contact with the molten aluminum M, the jack in contact with the aluminum behaves as an electrical contact.
  • the cylinder 1 is made in such a way that there is electrical continuity between the chisel 6 and the rear bottom of the cylinder.
  • a metal bearing not shown, is used and when the chisel 6 comes into contact with the aluminum M, an electrical signal can feed a controller A and cause the shutdown of the control device 10 and its passage in position 10b .
  • the orifice 4 is then connected to the supply of the distributor 9 through the valve 11.
  • the rod 2 and the chisel 6 then begin their ascent.
  • the piston 3 causes the return of the probe 11a. Arriving at the top, during the rise, the piston 3 and the rod 7 slightly exceed the engagement of the bolt 8a to ensure the complete tilting of the valve 11 in the position 11 c. This change of state causes the atmosphere of the lower chamber of the breaker cylinder to be vented.
  • control device can be integrated with the cylinder 1.
  • Figures 2 to 5 illustrate an embodiment of the bottom of the cylinder 1, modified to accommodate the control device according to the invention.
  • Fig. 3 can see the finger 7, slidably mounted in a housing 13 provided in the bottom of the cylinder 1, which has a thread in its upper part for fixing on the piston 3.
  • the lower part of the finger 7 has a shoulder 7b which serves stop means.
  • the bolt 8a is made in the form of a slide guided in translation, orthogonal to the direction of movement of the finger 7, in a second housing 14 provided in the bottom of the cylinder 1 and made in the form of a blind cylindrical orifice.
  • a spring 15 is interposed between the wall of the housing 14 and the bolt 8a while the housing 14 is closed by a plug 16.
  • the bolt 8a comprises an orifice 8b in which can penetrate the finger 7.
  • the orifice 8b has an inner lip 8c adapted to cooperate with the shoulder 7b.
  • valve 11 integrated in the bottom of the jack 1 can be seen.
  • the slide 20 of the valve 11 and the probe 11a are slidably mounted in a recess provided in the bottom of the jack 1 and closed by a plug 21.
  • the probe n ' is not here in direct contact with the piston 3.
  • a trigger 12 is installed in a housing provided in the bottom of the cylinder 1 and closed by a plug 19 having an orifice allowing the passage of one end of the trigger 12.
  • a spring 18 exerts a force on the trigger 12 tending to maintain the trigger 12 against the plug 19 so that the end of the trigger 12 slightly exceeds the plug 19.
  • the displacement of the trigger is a translational movement along an axis parallel to the direction of movement of the piston 3.
  • the trigger 12 comprises an inclined surface 12a adapted to cooperate with the rounded end of the probe 11a. In this way, when the piston 3 comes into contact with the end of the trigger 12 and causes the trigger 12 to enter its housing, the surface 12a exerts a force on the probe 11a which causes the displacement of the valve spool 20 11.
  • This mechanism thus allows the detection of the arrival of the piston 3 in the high position and thus causes the change of state of the valve 11 and the depressurization of the inlet 4 of the piston 1.
  • the exhaust cylinder 1 is oversized.
  • the pressure inlet has a low flow rate so as to avoid a too high pressure rise in the drive chambers. In this way, full pressure can be reached in about 7 seconds. The maximum pressure is about 7 bars. Nevertheless, during the ascent and following the degree of soiling of the chisel, this pressure is often not necessary. Indeed, 1 bar is sufficient for the lift of the cylinder given the weight hitched to the rod. During the descent phase, the rise in pressure takes place only if the resistance of the crust requires it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Actuator (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP10740381.8A 2009-07-21 2010-07-19 Dispositif de commande d'un vérin pneumatique Active EP2456986B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0903581A FR2948426B1 (fr) 2009-07-21 2009-07-21 Dispositif de commande d'un verin pneumatique
PCT/IB2010/053276 WO2011010274A1 (fr) 2009-07-21 2010-07-19 Dispositif de commande d'un vérin pneumatique

Publications (3)

Publication Number Publication Date
EP2456986A1 EP2456986A1 (fr) 2012-05-30
EP2456986B1 EP2456986B1 (fr) 2014-02-26
EP2456986B2 true EP2456986B2 (fr) 2018-08-29

Family

ID=41693127

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10740381.8A Active EP2456986B2 (fr) 2009-07-21 2010-07-19 Dispositif de commande d'un vérin pneumatique

Country Status (8)

Country Link
EP (1) EP2456986B2 (zh)
CN (2) CN102472302A (zh)
AU (1) AU2010274613B2 (zh)
CA (1) CA2767588C (zh)
FR (1) FR2948426B1 (zh)
IN (1) IN2012DN00556A (zh)
WO (1) WO2011010274A1 (zh)
ZA (1) ZA201200414B (zh)

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US9557059B2 (en) 2011-12-15 2017-01-31 Honeywell International Inc Gas valve with communication link
US8905063B2 (en) 2011-12-15 2014-12-09 Honeywell International Inc. Gas valve with fuel rate monitor
US8839815B2 (en) 2011-12-15 2014-09-23 Honeywell International Inc. Gas valve with electronic cycle counter
US9074770B2 (en) 2011-12-15 2015-07-07 Honeywell International Inc. Gas valve with electronic valve proving system
US9835265B2 (en) 2011-12-15 2017-12-05 Honeywell International Inc. Valve with actuator diagnostics
US9851103B2 (en) 2011-12-15 2017-12-26 Honeywell International Inc. Gas valve with overpressure diagnostics
US9846440B2 (en) 2011-12-15 2017-12-19 Honeywell International Inc. Valve controller configured to estimate fuel comsumption
US8947242B2 (en) 2011-12-15 2015-02-03 Honeywell International Inc. Gas valve with valve leakage test
US8899264B2 (en) 2011-12-15 2014-12-02 Honeywell International Inc. Gas valve with electronic proof of closure system
US9995486B2 (en) 2011-12-15 2018-06-12 Honeywell International Inc. Gas valve with high/low gas pressure detection
CN102618889A (zh) * 2012-04-26 2012-08-01 山西兆丰铝业有限责任公司 铝电解槽打壳锤头
US10422531B2 (en) 2012-09-15 2019-09-24 Honeywell International Inc. System and approach for controlling a combustion chamber
US9234661B2 (en) 2012-09-15 2016-01-12 Honeywell International Inc. Burner control system
CN102828202B (zh) * 2012-09-17 2015-04-22 北京爱社时代科技发展有限公司 一种新型的智能打壳缸
EP2868970B1 (en) 2013-10-29 2020-04-22 Honeywell Technologies Sarl Regulating device
US10024439B2 (en) 2013-12-16 2018-07-17 Honeywell International Inc. Valve over-travel mechanism
CN103938226B (zh) * 2014-04-18 2016-08-17 东北大学 一种多功能电解铝打壳气动控制系统
CN104005057B (zh) * 2014-04-29 2016-05-18 中国铝业股份有限公司 一种多功能联合机组打壳机自动锁定装置
US9841122B2 (en) 2014-09-09 2017-12-12 Honeywell International Inc. Gas valve with electronic valve proving system
US9645584B2 (en) 2014-09-17 2017-05-09 Honeywell International Inc. Gas valve with electronic health monitoring
CN104674302B (zh) * 2015-03-19 2017-01-04 河南理工大学 一种高强度电解铝打壳机导引板
US10503181B2 (en) 2016-01-13 2019-12-10 Honeywell International Inc. Pressure regulator
CN105736503B (zh) * 2016-04-22 2017-07-07 济南弋泽展特机械有限公司 一种气路阀件
US10564062B2 (en) 2016-10-19 2020-02-18 Honeywell International Inc. Human-machine interface for gas valve
US11073281B2 (en) 2017-12-29 2021-07-27 Honeywell International Inc. Closed-loop programming and control of a combustion appliance
US10697815B2 (en) 2018-06-09 2020-06-30 Honeywell International Inc. System and methods for mitigating condensation in a sensor module
DE102019104283A1 (de) 2019-02-20 2020-08-20 Saurer Technologies GmbH & Co. KG Steuereinheit zur pneumatischen Ansteuerung eines aktiven Spulengatters
CN112498751A (zh) * 2020-12-15 2021-03-16 航天科工火箭技术有限公司 一种连接解锁装置
CN112760680B (zh) * 2020-12-19 2024-02-02 内蒙古锦溪科技股份有限公司 一种可变行程打壳气缸

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Publication number Priority date Publication date Assignee Title
US3359862A (en) † 1966-02-25 1967-12-26 Mcdowell Wellman Eng Co Piston locking means
WO1981002044A1 (en) † 1980-01-04 1981-07-23 Mecman Ab Locking device for fluid cylinders
WO2007042780A2 (en) † 2005-10-08 2007-04-19 Norgren Limited Actuator assembly
EP1820974A2 (en) † 2006-02-16 2007-08-22 Ross Operating Valve Company Inlet monitor and latch for a crust breaking system

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Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3359862A (en) † 1966-02-25 1967-12-26 Mcdowell Wellman Eng Co Piston locking means
WO1981002044A1 (en) † 1980-01-04 1981-07-23 Mecman Ab Locking device for fluid cylinders
WO2007042780A2 (en) † 2005-10-08 2007-04-19 Norgren Limited Actuator assembly
EP1820974A2 (en) † 2006-02-16 2007-08-22 Ross Operating Valve Company Inlet monitor and latch for a crust breaking system

Also Published As

Publication number Publication date
CA2767588C (fr) 2017-12-05
IN2012DN00556A (zh) 2015-06-12
AU2010274613A1 (en) 2012-02-02
EP2456986A1 (fr) 2012-05-30
AU2010274613B2 (en) 2016-03-24
CN102472302A (zh) 2012-05-23
CA2767588A1 (fr) 2011-01-27
CN106835198A (zh) 2017-06-13
EP2456986B1 (fr) 2014-02-26
FR2948426B1 (fr) 2011-09-02
WO2011010274A1 (fr) 2011-01-27
ZA201200414B (en) 2012-09-26
FR2948426A1 (fr) 2011-01-28
CN106835198B (zh) 2021-01-15

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