EP2506938A1 - Flüssigkeitsausstossvorrichtung - Google Patents

Flüssigkeitsausstossvorrichtung

Info

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
Application number
EP10807598A
Other languages
English (en)
French (fr)
Other versions
EP2506938B1 (de
Inventor
Christian Fabre
Alain Bignolais
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Airbus Operations SAS
Original Assignee
Airbus Operations SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Airbus Operations SAS filed Critical Airbus Operations SAS
Publication of EP2506938A1 publication Critical patent/EP2506938A1/de
Application granted granted Critical
Publication of EP2506938B1 publication Critical patent/EP2506938B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
EP10807598.7A 2009-12-04 2010-12-03 Flüssigkeitsausstossvorrichtung Not-in-force EP2506938B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0958676A FR2953418B1 (fr) 2009-12-04 2009-12-04 Dispositif d'ejection d'un fluide
PCT/FR2010/052608 WO2011067546A1 (fr) 2009-12-04 2010-12-03 Dispositif d'éjection d'un fluide

Publications (2)

Publication Number Publication Date
EP2506938A1 true EP2506938A1 (de) 2012-10-10
EP2506938B1 EP2506938B1 (de) 2013-06-05

Family

ID=42235647

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10807598.7A Not-in-force EP2506938B1 (de) 2009-12-04 2010-12-03 Flüssigkeitsausstossvorrichtung

Country Status (5)

Country Link
US (1) US8991511B2 (de)
EP (1) EP2506938B1 (de)
CN (1) CN102639194B (de)
FR (1) FR2953418B1 (de)
WO (1) WO2011067546A1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103697173A (zh) * 2013-12-20 2014-04-02 宁波正欣消防设备有限公司 一种灭火器用高压力阀门总成
CN105056447B (zh) * 2015-08-05 2018-03-30 陈奇 双启动灭火器喷嘴
GB2587274B (en) * 2015-09-23 2021-10-06 Lifeline Fire & Safety Systems Ltd Improvements relating to fire suppression systems
GB2542580B (en) * 2015-09-23 2021-01-06 Lifeline Fire & Safety Systems Ltd Improvements relating to fire suppression systems
FR3056417B1 (fr) * 2016-09-28 2021-05-14 Airbus Safran Launchers Sas Dispositif de delivrance d'un materiau pressurise
CN111068225A (zh) * 2019-12-26 2020-04-28 安徽天辰云泽安全科技有限公司 一种微型全氟己酮灭火装置
CN114129945B (zh) * 2021-11-24 2022-07-22 北京达氟安全科技有限公司 便于重复使用拆换配件的灭火装置及其应用方法
CN114486274B (zh) * 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 一种验证飞机发动机短舱泄压系统的装置及方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3812621B2 (ja) * 1998-10-15 2006-08-23 Ｎｏｋ株式会社 端面シール
CN2541815Y (zh) * 2002-04-12 2003-03-26 于占辉 贮压式水溶剂灭火弹
CN101293130A (zh) * 2007-04-24 2008-10-29 顾平原 一种便携式液弹喷射灭火器
FR2922972B1 (fr) * 2007-10-30 2009-12-25 Airbus France Dispositif d'ejection de fluide et utilisation d'un tel dispositif.
JP2011500242A (ja) * 2007-10-30 2011-01-06 エアバス・オペレーションズ 漏出防止性を強化した流体射出装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011067546A1 *

Also Published As

Publication number Publication date
EP2506938B1 (de) 2013-06-05
FR2953418B1 (fr) 2011-12-09
US20120279729A1 (en) 2012-11-08
CN102639194B (zh) 2014-10-01
FR2953418A1 (fr) 2011-06-10
WO2011067546A1 (fr) 2011-06-09
CN102639194A (zh) 2012-08-15
US8991511B2 (en) 2015-03-31

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