EP1112110B1 - Dispositif d'ouverture automatique d'un organe de securite, en response a une elevation de temperature - Google Patents
Dispositif d'ouverture automatique d'un organe de securite, en response a une elevation de temperature Download PDFInfo
- Publication number
- EP1112110B1 EP1112110B1 EP00951606A EP00951606A EP1112110B1 EP 1112110 B1 EP1112110 B1 EP 1112110B1 EP 00951606 A EP00951606 A EP 00951606A EP 00951606 A EP00951606 A EP 00951606A EP 1112110 B1 EP1112110 B1 EP 1112110B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- safety member
- temperature
- spacer
- shape
- abutment
- 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.)
- Expired - Lifetime
Links
- 230000004044 response Effects 0.000 title claims abstract description 8
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 12
- 230000007704 transition Effects 0.000 claims abstract description 10
- 230000000717 retained effect Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 abstract description 38
- 101100230509 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) hat-1 gene Proteins 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 238000012800 visualization Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 229910002058 ternary alloy Inorganic materials 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
- A62C37/10—Releasing means, e.g. electrically released
- A62C37/11—Releasing means, e.g. electrically released heat-sensitive
- A62C37/16—Releasing means, e.g. electrically released heat-sensitive with thermally-expansible links
Definitions
- the invention relates to a device for automatically opening an organ in response to a rise in temperature.
- This device can be used to trigger the opening of a nozzle fire extinguishing system, fire door, flapper for example, a fire door, a smoke escape hatch or a radome.
- an automatic trigger device a assembly including a frequently changing ternary alloy fuse of state at a well-defined temperature. It is also common to use an electronic device comprising an element sensitive to elevation of temperature, and to perform an electronic treatment so as to order the opening of a valve, or a lock.
- the fusible pellet is not trustworthy. Alloys age with time, their temperature fusion is modified and their mechanical characteristics are such as operations may be accidental or otherwise not to take place.
- the invention implements at least one metal part made of a shape memory alloy, used after a treatment thermal and mechanical, and in a temperature range him conferring a so-called quality of simple memory effect form.
- the alloy part is made and heat treated to memorize its initial form. Then she is deformed to get into shape temporary, or active. This mechanical deformation induces a potential of movement, which is released when the piece reaches the temperature, so-called of transition, where the piece returns to its original form by plastic deformation. Plastic deformation and temperature of transition depend on the alloy chosen to make the piece.
- GB-A-2,250,435 discloses a device automatic opening of a security organ, in response to a temperature rise, the safety member being maintained in closing position by means of a stop and a spacer in shape memory alloy.
- JP-08-173,570 and JP-08-289,940 describe automatic sprinkler opening devices each using one shape memory holding device.
- an opening valve automatically in response to a rise in temperature, is willing to the end of a pipe (not shown) located under the valve 4, in the axis of the passage 7 closed by the plug 8.
- the seal between the cap 8 and the passage 7 is provided by O-rings 6.
- the body of the valve 4 is provided cylindrical, for example, with an opening 9 for the escape of the pressurized fluid arriving by the pipe not shown and the passage 7.
- the body of the valve 4 is closed by a hat 1 screwed for example, and having an opening central 10, rectangular for example, whose major axis is perpendicular to the plane of Figure 1a.
- This central opening 10 is provided to pass a stop 2 of corresponding form.
- the stop 2 is placed under the hat 1 with its long axis in the plane of Figure 1.
- a spacer 3 of shape memory alloy Between the stop 2 and the stopper 8 is arranged a spacer 3 of shape memory alloy.
- the spacer is preferably in the form of a rod of square section or rectangular section, whose section is calculated to present resistance to compression necessary to hold the plug 8 in the passage 7.
- the section of the spacer 3 is 8x4mm.
- the initial shape of the spacer 3 is rectilinear. Then the spacer 3 is twisted a quarter of a turn to change to its active form. The spacer is then set up and secured on the one hand to the cap 8, on the other hand to the stop 2 which is in the position shown in Figures 1a and 1b. The hat 1 is then immobilized and preferably sealed to avoid any inconvenience.
- the plug 8 is advantageously locked in rotation relative to the body of the valve 4 by a lug 5, or by the shape, square or hexagonal for example, from its upper part.
- the spacer When the temperature rises and reaches the transition temperature of the shape memory alloy constituting the spacer 3, the spacer returns to its original rectilinear form. As the plug 8 is blocked in rotation is the stop 2 which rotates a quarter of a turn. She is then in front of the central opening 10 and she stops playing its role of stop. The pressure existing in passage 7 then raises the cap 8 which is no longer retained by the spacer 3 and the stop 2. The stop 2 passes through the central opening 10 and the cap 8 is projected until hat that holds him back. Meanwhile, the fluid prevailing in the pipe not shown and in the passage 7 escapes through the lateral opening 9.
- the lock body 4 carries a hat 1 provided with a central opening 10.
- the abutment 2 is secured to the spacer 3 of the memory alloy form.
- a bolt 11 protruding from the lock body 4 is biased towards the by the springs 12.
- the spacer 3, of rectilinear initial shape, is twisted a quarter of a turn in its active form.
- the spacer returns to its original shape, causing the rotation of the stop 2 which passes into the central opening 10 under the action of the springs 12, the bolt 11 then fading into the lock body 4 and releasing, by example, a fire door.
- the spacer 3 works in compression to block the movement of the bolt.
- the spacers 3 work in tension for block the movement of the plug 8 (or bolt 11).
- the valve body 4 comprises a plug 8 to be released to ensure the opening of valve.
- At least one spacer 3 is attached to its lower end to the valve body 4, possibly by a fastener 13. At its upper end, it is fixed to a stopper 14 of the cap 8.
- the spacer 3, rectilinear in its original form, is twisted a quarter turn in its active form, so that the retaining stop 14 is arranged radially relative to the valve body 4 and ensures the blocking plug 8 in tension.
- the spacer 3 returns to its original shape.
- the retaining stop 14 is then arranged tangentially to the valve body 4 and the plug 8 is released, ensuring the opening of the valve.
- the plug is not maintained directly by the spacer 3 which has virtually no effort to undergo permanently in the longitudinal direction.
- the valve body 4 has a central passage for a plug 8 having a throat annular 15 capable of receiving locking balls 16.
- the spacers 3 are not attached to the washer 17. They maintain only by support. In their original form, spacers are twisted or arched. In their active form, they are rectilinear. When the transition temperature is reached, the spacers return to their original shape, which is longitudinally shorter than their active form. They then allow the surrection of the washer 17 under the action of the springs 18, which allows the withdrawal of 16 and the release of the plug 8. In this embodiment, the opening central 10 hat 1 is sufficient to let the cap 8.
- a pipe 20 is controlled by a ball valve 21, the rotation of which is controlled by a 22.
- the spacer 3 is twisted and fixed firstly to the square 22 of control of the plug 21, on the other hand to a body 23 fixed relative to the valve. When the transition temperature is reached, the spacer returns to its original position and it rotates a quarter turn of the bushel 21, thus opening the valve.
- the device is used to block the movement of a plug closing the passage of a product extinguisher for example, or bolt of a lock.
- This blockage is assured, direct or not, by a spacer made of memory alloy form.
- the return of the spacer to its initial shape causes the release stopper or bolt.
- the choice of the single-action mode of action for the spacer ensures a unique irreversible operation, and prohibits the reuse, which ensures the visualization of the operation.
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Temperature-Responsive Valves (AREA)
- Control Of Combustion (AREA)
- Safety Valves (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Description
- réponse fiable et fidèle à l'élévation de température,
- aptitude à fonctionner vérifiable facilement au cours des inspections,
- robustesse,
- conception et assemblage simples et comportant le minimum de pièces,
- stabilité de la composition et de la cristallisation, donc stabilité de la température de déclenchement,
- visualisation du fonctionnement.
Selon d'autres caractéristiques :
- l'entretoise est disposée entre l'organe de sécurité et la butée ;
- l'organe de sécurité est retenu directement par la butée ;
- l'organe de sécurité est retenu indirectement par la butée constituée par une rondelle, par l'intermédiaire de billes coopérant avec une gorge annulaire de l'organe de sécurité, et les entretoises sont vrillées dans leur forme initiale et rectilignes dans leur forme active.
- la figure 1a est une vue schématique en coupe partielle axiale d'un premier mode de réalisation de l'invention dans une application à une vanne à ouverture automatique ;
- la figure 1b est une vue partielle de dessus de la vanne de la figure 1a,
- la figure 2 est une vue schématique en coupe partielle axiale du premier mode de réalisation de l'invention appliqué à une serrure à ouverture automatique ;
- la figure 3a est une vue schématique en coupe partielle axiale d'un deuxième mode de réalisation de l'invention dans une application à un bouchon à ouverture automatique ;
- la figure 3b est une vue de dessus de la figure 3a,
- la figure 4 est une vue schématique en coupe partielle axiale d'un troisième mode de réalisation de l'invention dans une application à un bouchon à ouverture automatique maintenu en position de fermeture par des billes ;
- la figure 5 est une vue schématique en coupe partielle axiale d'un quatrième mode de réalisation de l'invention appliqué à l'ouverture automatique d'une vanne à boisseau sphérique.
Claims (4)
- Dispositif d'ouverture automatique d'un organe de sécurité, en réponse à une élévation de température, l'organe de sécurité se déplaçant axialement dans un passage (7) et étant soumis à une sollicitation permanente à l'ouverture, l'organe de sécurité (8, 11) étant maintenu en position de fermeture, directement ou non, au moyen d'au moins une butée (2, 14, 17) et une entretoise (3) en alliage à mémoire de forme, de sorte que lorsque la température atteint la température de transition de l'alliage à mémoire de forme, l'entretoise (3) revienne à sa forme initiale et déplace la butée, assurant ainsi la libération de l'organe de sécurité, caractérisé en ce que l'entretoise (3) est une tige de section rectangulaire, vrillée pour passer à sa forme active, le déplacement de la butée se faisant par rotation.
- Dispositif selon la revendication 1, caractérisé en ce que l'entretoise (3) est disposée entre l'organe de sécurité (8) et la butée (2).
- Dispositif selon la revendication 1, caractérisé en ce que l'organe de sécurité (8) est retenu directement par la butée (14).
- Dispositif selon la revendication 1, caractérisé en ce que l'organe de sécurité (8) est retenu indirectement par la butée constituée par une rondelle (17, par l'intermédiaire de billes (16) coopérant avec une gorge annulaire (15) de l'organe de sécurité, et en ce que les entretoises sont vrillées dans leur forme initiale et rectilignes dans leur forme active.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9907679A FR2794984B1 (fr) | 1999-06-17 | 1999-06-17 | Dispositif d'ouverture automatique d'un organe de securite, en reponse a une elevation de temperature |
| FR9907679 | 1999-06-17 | ||
| PCT/FR2000/001684 WO2000078401A1 (fr) | 1999-06-17 | 2000-06-19 | Dispositif d'ouverture automatique d'un organe de securite, en response a une elevation de temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1112110A1 EP1112110A1 (fr) | 2001-07-04 |
| EP1112110B1 true EP1112110B1 (fr) | 2005-08-31 |
Family
ID=9546922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00951606A Expired - Lifetime EP1112110B1 (fr) | 1999-06-17 | 2000-06-19 | Dispositif d'ouverture automatique d'un organe de securite, en response a une elevation de temperature |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1112110B1 (fr) |
| AT (1) | ATE303182T1 (fr) |
| DE (1) | DE60022301T2 (fr) |
| DK (1) | DK1112110T3 (fr) |
| ES (1) | ES2245943T3 (fr) |
| FR (1) | FR2794984B1 (fr) |
| WO (1) | WO2000078401A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2000718A1 (fr) * | 2007-06-04 | 2008-12-10 | Luxembourg Patent Company S.A. | Dispositif de décharge de pression à activation thermique doté d'un matériau à effet à mémoire de forme |
| RU2420337C1 (ru) * | 2010-03-09 | 2011-06-10 | Государственное образовательное учреждение высшего профессионального образования Московский авиационный институт (государственный технический университет), (МАИ) | Спринклер |
| US9381389B2 (en) * | 2014-04-24 | 2016-07-05 | Kidde Technologies, Inc. | Fire suppression system actuation apparatus and system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2250435A (en) * | 1990-12-07 | 1992-06-10 | Graviner Ltd Kidde | Nozzle for discharging liquid fire extinguishant |
| JPH08173570A (ja) * | 1994-12-21 | 1996-07-09 | Senju Sprinkler Kk | スプリンクラーヘッド |
| JPH08289940A (ja) * | 1995-04-24 | 1996-11-05 | Senju Sprinkler Kk | スプリンクラーヘッド |
-
1999
- 1999-06-17 FR FR9907679A patent/FR2794984B1/fr not_active Expired - Fee Related
-
2000
- 2000-06-19 DE DE60022301T patent/DE60022301T2/de not_active Expired - Fee Related
- 2000-06-19 ES ES00951606T patent/ES2245943T3/es not_active Expired - Lifetime
- 2000-06-19 DK DK00951606T patent/DK1112110T3/da active
- 2000-06-19 AT AT00951606T patent/ATE303182T1/de not_active IP Right Cessation
- 2000-06-19 WO PCT/FR2000/001684 patent/WO2000078401A1/fr not_active Ceased
- 2000-06-19 EP EP00951606A patent/EP1112110B1/fr not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DK1112110T3 (da) | 2006-01-09 |
| FR2794984A1 (fr) | 2000-12-22 |
| DE60022301D1 (de) | 2005-10-06 |
| FR2794984B1 (fr) | 2001-12-07 |
| DE60022301T2 (de) | 2006-06-08 |
| WO2000078401A1 (fr) | 2000-12-28 |
| ATE303182T1 (de) | 2005-09-15 |
| ES2245943T3 (es) | 2006-02-01 |
| EP1112110A1 (fr) | 2001-07-04 |
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