EP2506938A1 - Fluid ejection device - Google Patents
Fluid ejection deviceInfo
- Publication number
- EP2506938A1 EP2506938A1 EP10807598A EP10807598A EP2506938A1 EP 2506938 A1 EP2506938 A1 EP 2506938A1 EP 10807598 A EP10807598 A EP 10807598A EP 10807598 A EP10807598 A EP 10807598A EP 2506938 A1 EP2506938 A1 EP 2506938A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- piston
- pressure
- fluid
- tank
- 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
- 239000012530 fluid Substances 0.000 title claims abstract description 50
- 230000000694 effects Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 13
- 230000001960 triggered effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- IYRWEQXVUNLMAY-UHFFFAOYSA-N fluoroketone group Chemical group FC(=O)F IYRWEQXVUNLMAY-UHFFFAOYSA-N 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000003100 immobilizing effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
- A62C13/66—Portable extinguishers which are permanently pressurised or pressurised immediately before use with extinguishing material and pressure gas being stored in separate containers
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
- A62C13/006—Portable extinguishers which are permanently pressurised or pressurised immediately before use for the propulsion of extinguishing powder
Definitions
- the invention belongs to the field of devices for ejecting a fluid. Such devices are more particularly used as extinguishers, the ejected fluid then being an extinguishing agent in liquid or powder form.
- such devices include:
- a cylinder-shaped reservoir separated into two sealed chambers by an axially movable piston;
- a first chamber contains the fluid to be ejected, it communicates with an ejection orifice, closed by a lid;
- a second chamber called the pressurization chamber, is connected to means making it possible to increase the pressure in said chamber;
- the pressure is increased in the pressurization chamber, either by putting it in communication with a pressurized fluid or by activating inside it. here a pyrotechnic gas generator.
- the increase in pressure causes the piston to move from the second chamber to the first, which increases the pressure in this first chamber.
- the closure cap of the ejection port yields for a given pressure, releasing the passage and causing ejection of the fluid from the first chamber.
- This device of the prior art has the advantage of not being subjected to any pressure outside the ejection phase of the fluid. Since it is not under duress, it can remain in this passive mode for years and is therefore frequently used as a fire safety device.
- the piston forming separation between the two chambers being free to translate, the fluid contained in the first chamber, sealed, is free to expand or to contract with the temperature during this passive phase, causing a movement of the piston in translation during these volume variations.
- the first chamber is always filled with an almost pure fluid which improves the efficiency of the fight against fire during the ejection phase, when the fluid is, for example, an extinguishing agent.
- This wear of the sealing elements can affect the reliability of the device.
- a cylindrical reservoir separated perpendicularly to its axis sealingly in two chambers by a member, said piston, adapted to slide axially inside the reservoir;
- a first chamber containing a non-gaseous fluid in communication with an ejection orifice closed by a lid, able to open for a pressure greater than or equal to a determined pressure in said first chamber;
- a second chamber called a pressurization chamber, capable of being connected to means for increasing the pressure in said chamber;
- the piston is stationary relative to the reservoir.
- the sealing elements do not undergo mechanical wear and continuous friction with the tank body.
- the reservoir can thus be made with a state of internal surface less care, so for a lower cost, without degrading the reliability of the device.
- the means linking the piston to the reservoir are able to break under the effect of an increase in pressure in the pressurizing chamber and are insoluble in the case of an increase in pressure in the chamber containing the fluid to be ejected.
- the piston can be released only during a fluid ejection phase and can not be detached from the body by an overpressure in the chamber containing the fluid to be ejected.
- the piston comprises means capable of immobilizing it in translation relative to the reservoir in a direction from the first to the second chamber for an end position corresponding to the so-called dump position.
- the piston thus immobilized in translation avoids any return of fluid into the reservoir.
- This arrangement allows in particular to couple in parallel, on the same fluid distribution circuit, several devices of this type, which can be triggered sequentially.
- the piston comprises:
- the device further comprises means for putting the annular chamber of the piston in communication with the chamber containing the fluid when the piston is in an axial emptying position.
- the gas escapes from the pressurizing chamber through the orifices of the piston and the drain orifice, when the piston reaches the end of the stroke, which has the effect of depressurizing the pressurizing chamber and purging the pressure circuit. fluid distribution.
- the means for closing the communication orifices between the annular chamber of the piston and the pressurizing chamber are constituted by an expandable elastic ring, so as to open the communication orifices under the effect of the pressure in the pressurizing chamber. .
- the device comprises a breakable lid for a defined pressure closing the chamber comprising the fluid to be ejected.
- the piston being fixed in the passive phase, the volume variations in the first chamber can not be compensated for by the movement of the piston.
- the first chamber is only partially filled with the fluid and the residual volume is advantageously filled with a compressible neutral gas such as argon, nitrogen or helium.
- the breakable lid plays a safety role in case of overpressure in the first chamber by putting it in the open air beyond a defined pressure, thus avoiding any risk of tank explosion.
- FIG. 1 shows a longitudinal sectional view and in perspective of an embodiment of the device of the invention in passive phase
- FIG. 2 is a longitudinal sectional view and perspective of the device according to an embodiment after tripping of said device when the piston arrives in said axial emptying position;
- the first chamber (1 1) is partially filled with the fluid to be ejected (1 10), the volume supplement being filled with a neutral gas so that it always reigns inside the chamber, a pressure greater than the atmospheric pressure.
- This first chamber communicates with an orifice (13) formed in the end flange (21), which orifice is closed by a breakable lid (30).
- Means (210) for measuring the pressure in the first chamber make it possible to check its tightness.
- the second chamber (12), called the pressurization chamber is also closed by a flange (22), which further supports means (40) capable of increasing the pressure in this chamber, in this case a pyrotechnic gas generator (40). ).
- the end (102) of the skirt of the piston (120) comprises an internal thread and a shoulder (103) of smaller diameter than the diameter of the threaded portion. Said threaded portion is screwed onto a threaded portion (222) of the flange (22) extending into the pressurizing chamber until the shoulder (103) of the skirt comes into contact with said flange.
- the piston skirt is of reduced thickness (101) between the shoulder and the inner thread (102).
- the piston comprises sealing means (106, 107) with the interior of the tank and defining an annular chamber (105) between a groove formed in the skirt of the piston and the inner wall of the tank. Openings (108) pass through the bottom of said groove placing the pressurization chamber (12) in communication with the annular chamber (105). When no pressure prevails in the pressurizing chamber these orifices are obstructed by an elastic ring (50). When the pressure increases in the pressurizing chamber (12), the radial expansion of the elastic ring, under the effect of pressure, then communicates the gas contained in the pressurization chamber (12) with the annular chamber ( 105).
- the reduced section (101) of the piston gives way, releasing the which, translating axially in the reservoir, increases the pressure in the fluid (1 10) contained in the first chamber (1 1).
- the breakable lid (30) in turn gives way, disobstracting the orifice (13) of the end flange (22) and thus allowing the fluid (1 10) to be ejected through this orifice .
- the piston continues to translate under the effect of the pressure of the gas, thus chasing all the fluid (1 10) contained in the reservoir.
- the inner diameter of the reservoir widens to form a shoulder (121).
- the enlargement of this diameter breaks the seal between the seal (106) located at the front of the annular chamber (105) so that the orifices (108) of the skirt of the piston being open, because the elastic ring ( 50) is always expanded by the gas pressure, said gas is in communication with the orifice (13).
- the pressurizing chamber is purged, and if the orifice (13) is in communication with a fluid distribution circuit (1 10), said circuit is also purged.
- the pressure drops in the pressurization chamber and the elastic ring (50) returns to its unconstrained shape, closing the orifices (108) of the piston skirt.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0958676A FR2953418B1 (en) | 2009-12-04 | 2009-12-04 | DEVICE FOR EJECTING A FLUID |
PCT/FR2010/052608 WO2011067546A1 (en) | 2009-12-04 | 2010-12-03 | Fluid ejection device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2506938A1 true EP2506938A1 (en) | 2012-10-10 |
EP2506938B1 EP2506938B1 (en) | 2013-06-05 |
Family
ID=42235647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10807598.7A Not-in-force EP2506938B1 (en) | 2009-12-04 | 2010-12-03 | Fluid ejection device |
Country Status (5)
Country | Link |
---|---|
US (1) | US8991511B2 (en) |
EP (1) | EP2506938B1 (en) |
CN (1) | CN102639194B (en) |
FR (1) | FR2953418B1 (en) |
WO (1) | WO2011067546A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103697173A (en) * | 2013-12-20 | 2014-04-02 | 宁波正欣消防设备有限公司 | High pressure valve assembly for fire extinguisher |
CN105056447B (en) * | 2015-08-05 | 2018-03-30 | 陈奇 | Double startup fire extinguisher nozzle |
GB2542580B (en) * | 2015-09-23 | 2021-01-06 | Lifeline Fire & Safety Systems Ltd | Improvements relating to fire suppression systems |
GB2587274B (en) * | 2015-09-23 | 2021-10-06 | Lifeline Fire & Safety Systems Ltd | Improvements relating to fire suppression systems |
FR3056417B1 (en) * | 2016-09-28 | 2021-05-14 | Airbus Safran Launchers Sas | PRESSURIZED MATERIAL DELIVERY DEVICE |
CN111068225A (en) * | 2019-12-26 | 2020-04-28 | 安徽天辰云泽安全科技有限公司 | Miniature perfluorohexanone extinguishing device |
CN114129945B (en) * | 2021-11-24 | 2022-07-22 | 北京达氟安全科技有限公司 | Fire extinguishing device convenient for repeatedly using and replacing fittings and application method thereof |
CN114486274B (en) * | 2021-12-28 | 2023-05-30 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Device and method for verifying decompression system of nacelle of aircraft engine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3812621B2 (en) * | 1998-10-15 | 2006-08-23 | Nok株式会社 | End face seal |
CN2541815Y (en) * | 2002-04-12 | 2003-03-26 | 于占辉 | Pressuring hydrosolvent grenade |
CN101293130A (en) * | 2007-04-24 | 2008-10-29 | 顾平原 | Portable liquid ball ejecting fire extinguisher |
JP2011500242A (en) * | 2007-10-30 | 2011-01-06 | エアバス・オペレーションズ | Fluid ejection device with enhanced leakage prevention |
FR2922972B1 (en) * | 2007-10-30 | 2009-12-25 | Airbus France | FLUID EJECTION DEVICE AND USE OF SUCH A DEVICE |
-
2009
- 2009-12-04 FR FR0958676A patent/FR2953418B1/en not_active Expired - Fee Related
-
2010
- 2010-12-03 EP EP10807598.7A patent/EP2506938B1/en not_active Not-in-force
- 2010-12-03 CN CN201080054725.9A patent/CN102639194B/en not_active Expired - Fee Related
- 2010-12-03 WO PCT/FR2010/052608 patent/WO2011067546A1/en active Application Filing
- 2010-12-03 US US13/513,735 patent/US8991511B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2011067546A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2953418A1 (en) | 2011-06-10 |
US8991511B2 (en) | 2015-03-31 |
US20120279729A1 (en) | 2012-11-08 |
CN102639194B (en) | 2014-10-01 |
FR2953418B1 (en) | 2011-12-09 |
EP2506938B1 (en) | 2013-06-05 |
WO2011067546A1 (en) | 2011-06-09 |
CN102639194A (en) | 2012-08-15 |
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