EP1604743A1 - Nozzle for fire-fighting with constant flow rate - Google Patents

Nozzle for fire-fighting with constant flow rate Download PDF

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Publication number
EP1604743A1
EP1604743A1 EP05291238A EP05291238A EP1604743A1 EP 1604743 A1 EP1604743 A1 EP 1604743A1 EP 05291238 A EP05291238 A EP 05291238A EP 05291238 A EP05291238 A EP 05291238A EP 1604743 A1 EP1604743 A1 EP 1604743A1
Authority
EP
European Patent Office
Prior art keywords
tube
nozzle
fluid
head
lance according
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
EP05291238A
Other languages
German (de)
French (fr)
Other versions
EP1604743B1 (en
Inventor
Jean-François Seguin
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.)
St-Mihiel Sas
St Mihiel SAS
Original Assignee
St-Mihiel Sas
St Mihiel SAS
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Publication date
Application filed by St-Mihiel Sas, St Mihiel SAS filed Critical St-Mihiel Sas
Publication of EP1604743A1 publication Critical patent/EP1604743A1/en
Application granted granted Critical
Publication of EP1604743B1 publication Critical patent/EP1604743B1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/32—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening
    • B05B1/323—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening the valve member being actuated by the pressure of the fluid to be sprayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
    • B05B12/087—Flow or presssure regulators, i.e. non-electric unitary devices comprising a sensing element, e.g. a piston or a membrane, and a controlling element, e.g. a valve
    • B05B12/088—Flow or presssure regulators, i.e. non-electric unitary devices comprising a sensing element, e.g. a piston or a membrane, and a controlling element, e.g. a valve the sensing element being a flexible member, e.g. membrane, diaphragm, bellows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/308—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element comprising both a lift valve and a deflector

Definitions

  • the present invention relates to a fire lance comprising a body having a first end intended to be connected to a source of fluid under pressure and a second end carrying a hollow head in which is provided a tube and a rod extending coaxially in the tube, the rod carrying at its end located at the opposite of the body a nozzle delimiting with the tube a nozzle adjustable to deliver fluid passage through the body and the hollow head.
  • the current fire hoses are either fixed opening or adjustable, either automatic.
  • the dimensions of the nozzle are defined once and for all while in spears to adjustable opening, the user can change the dimensions of the nozzle according to the power of the feed fluid, which is usually water.
  • the feed fluid makes vary the dimensions of the nozzle according to its power in order to maintain the internal pressure at a constant control value.
  • the present invention proposes to remedy the drawback presented above and, for that purpose, it of fire having the structure mentioned in the first paragraph above and which is characterized in that it comprises means for regulation to automatically vary the dimensions of the nozzle so that the flow of fluid leaving it remains constant regardless of fluid pressure.
  • the tube is mounted sliding in the hollow head while the rod is fixed, the means of regulation being designed to exert on the tube a force opposite to that of the fluid in circulation and able to move said tube in the direction corresponding to an increase in the dimensions of the nozzle.
  • the regulation means adapt the position of the tube of to reduce the dimensions of the nozzle when the pressure of the fluid increases and increase these dimensions when the pressure of the fluid decreases.
  • the regulation means comprise an organ elastic located in a cavity defined by two flanges extending coaxially and carried respectively by the tube and head.
  • the collar of the tube can advantageously be adjacent to the second end of the body and extend radially outwards, while the collar of the head can advantageously extend radially inwards, a greater distance from the second end of the body than the collar of the tube.
  • the elastic member is preferably elastomer.
  • the tube and the stem are fixed, the regulation means being designed to exert on the mouthpiece a force opposite to that of the fluid in circulation and able to modify the size of said tip in the direction corresponding to an increase dimensions of the nozzle.
  • the output rate remains here still constant whatever the pressure of the supply fluid.
  • the means of regulation adapt the size of the mouthpiece so as to reduce the dimensions of the nozzle when the fluid pressure increases and to increase these dimensions when the fluid pressure decreases.
  • the regulating means comprise an element deformable covering the face of the tip which is turned towards the inside of the head, the deformable element being extensible radially under the action of the circulating fluid.
  • the deformable element is preferably elastomer.
  • the fire hose that can be seen in Figures 1 and 2 is a hand held launcher to be held by the user during its operation.
  • It comprises a body 1 whose rear end is provided a rotating union 2 intended to be connected to a supply pipe in water not shown, and whose front end carries a head digs 3.
  • the body 1 has a gripping handle 4 at its part lower and a handle 5 at its upper part.
  • the maneuvering handle 5 which is U-shaped, is articulated on an axis 6 perpendicular to the handle 4 and operates a tap located in the body 1 when the user rotates it on axis 6.
  • the hollow head 3 bears on the outer surface of its part previous a water effect selector 7 that the user has to make turn on its axis to modify, as needed, the form water jet coming out of the spear.
  • a tube 8 and a rod 9 extending coaxially in the tube 8 are arranged inside the head 3.
  • the tube 8 is slidably mounted in the head 3 while the rod 9 is fixed.
  • the rod 9 carries a tip 10 whose periphery is surrounded by the front part of the effect selector of water 7 and which delimits with the anterior end of the tube 8 a adjustable nozzle 11 for delivering water through the body 1 and the hollow head 3 of the lance.
  • the rod 9 At its rear end, the rod 9 is provided with legs radial 12 bearing a ring 13, the legs and the ring being for straightening the flow of water into the head 3.
  • the fire hose that has just been described furthermore comprises regulating means 14 for automatically varying the dimensions of the nozzle 11 so that the flow of water coming out of it remains constant regardless of the water pressure in circulation.
  • the regulation means 14 comprise an elastic member located in a delimited cavity 15 by two annular flanges 16, 17 extending coaxially and carried respectively by the tube 8 and the head 3.
  • the flange 16 is provided at the rear end of the tube 8 and extends radially outwardly, while the flange 17 is located in front of the collar 16 and protrudes on the surface internal of the head 3, radially inwards.
  • the elastic member is constituted by a cylindrical elastomer ring, but it goes without saying that it could have a completely different form and be realized in a completely different material.
  • the tube 8 is subjected to direction of the nozzle 10 thus allowing the nozzle 11 to have predetermined dimensions and the elastic member 14 to be compressed between the tube 8 and the hollow head 3.
  • the tube 8a, the rod 9a and the tip 10a shown schematically in Figure 3 are part of the internal structure of an alternative embodiment of the fire hose described in reference to FIGS. 1 and 2 and correspond respectively to the tube 8, the rod 9 and the tip 10 of this lance.
  • the tube 8a and the rod 9a are fixed while that regulation means 14a are designed to exert on the mouthpiece 10a a force opposed to that of water and able to change the size of the latter in the direction corresponding to an increase of the nozzle 11a.
  • regulating means 14a consist of a deformable element covering the inner face of the tip 10a and made of a material expandable radially under the action of circulating water, this material being preferably of elastomer.
  • the deformable element 14a is stretched towards the tube 8a, thus allowing the nozzle 11a to have predetermined dimensions.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Nozzles (AREA)
  • Safety Valves (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Abstract

The line has a body (1) with an end supporting a hollow head (3) in which a tube (8) and a shaft (9) are placed. The shaft extends coaxially in the tube. The shaft has an end situated opposite to the body for supporting a fitting (10) delimiting a nozzle (11) with the tube. An elastic unit varies a dimension of the nozzle such that output water flow of the nozzle is constant irrespective of the pressure of the water.

Description

La présente invention concerne une lance d'incendie comprenant un corps comportant une première extrémité destinée à être reliée à une source de fluide sous pression et une seconde extrémité portant une tête creuse dans laquelle sont prévus un tube et une tige s'étendant coaxialement dans le tube, la tige portant à son extrémité située à l'opposé du corps un embout délimitant avec le tube un ajutage réglable destiné à livrer passage au fluide traversant le corps et la tête creuse.The present invention relates to a fire lance comprising a body having a first end intended to be connected to a source of fluid under pressure and a second end carrying a hollow head in which is provided a tube and a rod extending coaxially in the tube, the rod carrying at its end located at the opposite of the body a nozzle delimiting with the tube a nozzle adjustable to deliver fluid passage through the body and the hollow head.

Les lances d'incendie actuelles sont soit à ouverture fixe ou réglable, soit automatiques.The current fire hoses are either fixed opening or adjustable, either automatic.

Dans les lances à ouverture fixe, les dimensions de l'ajutage sont définies une fois pour toute alors que dans les lances à ouverture réglable, l'utilisateur peut modifier les dimensions de l'ajutage en fonction de la puissance du fluide d'alimentation, lequel est généralement de l'eau.In fixed aperture lances, the dimensions of the nozzle are defined once and for all while in spears to adjustable opening, the user can change the dimensions of the nozzle according to the power of the feed fluid, which is usually water.

Lorsque la puissance du fluide alimentant ces lances subit une variation, celle-ci entraíne systématiquement une variation du débit du fluide traversant l'ajutage.When the power of the fluid supplying these spears undergoes a variation, this systematically leads to a variation of the flow rate fluid passing through the nozzle.

Or, quand le débit à travers l'ajutage diminue de façon importante, la quantité de fluide projetée ne peut protéger convenablement l'utilisateur contre les phénomènes d'explosion de fumée (backdraft) et d'embrasement généralisé éclair (flashover).When the flow through the nozzle decreases important, the amount of fluid projected can not protect suitably the user against the explosion phenomena of smoke (backdraft) and blaze generalized flash (flashover).

Dans les lances automatiques, le fluide d'alimentation fait varier les dimensions de l'ajutage en fonction de sa puissance afin de maintenir la pression interne à une valeur de régulation constante.In the automatic lances, the feed fluid makes vary the dimensions of the nozzle according to its power in order to maintain the internal pressure at a constant control value.

Cependant, lorsque la pression interne du fluide n'atteint pas cette valeur, par exemple lors d'une utilisation de la lance dans les étages supérieurs d'un immeuble, le débit du fluide traversant l'ajutage risque ici encore de devenir insuffisant pour protéger convenablement l'utilisateur contre les phénomènes de "backdraft" et de "flashover".However, when the internal pressure of the fluid does not reach this value, for example when using the spear in upper floors of a building, flow through the fluid the nozzle again risks becoming insufficient to protect appropriately the user against the phenomena of "backdraft" and of "flashover".

La présente invention se propose de remédier à l'inconvénient présenté ci-dessus et, pour ce faire, elle a pour objet une lance d'incendie ayant la structure mentionnée au premier paragraphe ci-dessus et qui est caractérisée en ce qu'elle comprend des moyens de régulation pour faire varier automatiquement les dimensions de l'ajutage afin que le débit de fluide sortant de celui-ci demeure constant quelle que soit la pression du fluide. The present invention proposes to remedy the drawback presented above and, for that purpose, it of fire having the structure mentioned in the first paragraph above and which is characterized in that it comprises means for regulation to automatically vary the dimensions of the nozzle so that the flow of fluid leaving it remains constant regardless of fluid pressure.

Les risques pour que les personnes combattant les incendies soient blessées par des phénomènes d'explosion de fumée (backdraft) et d'embrasement généralisé éclair (flashover) peuvent maintenant être réduits de façon importante.The risks for people fighting fires are injured by smoke explosion phenomena (backdraft) and blazing generalized flash (flashover) can now be significantly reduced.

En effet, comme le fluide sort de l'ajutage de la lance avec un débit constant, même lorsque la pression du fluide diminue sur le lieu d'intervention, la quantité de fluide projetée reste constante.Indeed, as the fluid leaves the nozzle of the lance with a constant flow, even when the fluid pressure decreases on the place of intervention, the amount of fluid projected remains constant.

La gravité des effets des phénomènes de "backdraft" et de "flashover" peut donc ainsi être fortement réduite.The severity of the effects of backdraft and "flashover" can thus be greatly reduced.

Selon un premier mode de réalisation, le tube est monté coulissant dans la tête creuse tandis que la tige est fixe, les moyens de régulation étant conçus pour exercer sur le tube une force opposée à celle du fluide en circulation et apte à déplacer ledit tube dans le sens correspondant à une augmentation des dimensions de l'ajutage.According to a first embodiment, the tube is mounted sliding in the hollow head while the rod is fixed, the means of regulation being designed to exert on the tube a force opposite to that of the fluid in circulation and able to move said tube in the direction corresponding to an increase in the dimensions of the nozzle.

Ainsi, les moyens de régulation adaptent la position du tube de façon à réduire les dimensions de l'ajutage lorsque la pression du fluide augmente et à augmenter ces dimensions lorsque la pression du fluide diminue.Thus, the regulation means adapt the position of the tube of to reduce the dimensions of the nozzle when the pressure of the fluid increases and increase these dimensions when the pressure of the fluid decreases.

Il convient de noter ici que lorsque la lance ne fonctionne pas, les dimensions de l'ajutage sont maximales.It should be noted here that when the spear does not work, the dimensions of the nozzle are maximum.

De préférence, les moyens de régulation comprennent un organe élastique situé dans une cavité délimitée par deux collerettes annulaires s'étendant coaxialement et portées respectivement par le tube et la tête.Preferably, the regulation means comprise an organ elastic located in a cavity defined by two flanges extending coaxially and carried respectively by the tube and head.

Dans ce mode de réalisation particulier, la collerette du tube peut avantageusement être adjacente à la seconde extrémité du corps et s'étendre radialement vers l'extérieur, tandis que la collerette de la tête peut avantageusement s'étendre radialement vers l'intérieur, à une distance plus grande de la seconde extrémité du corps que la collerette du tube.In this particular embodiment, the collar of the tube can advantageously be adjacent to the second end of the body and extend radially outwards, while the collar of the head can advantageously extend radially inwards, a greater distance from the second end of the body than the collar of the tube.

Par ailleurs, l'organe élastique est de préférence en élastomère.Furthermore, the elastic member is preferably elastomer.

Selon un second mode de réalisation, le tube et la tige sont fixes, les moyens de régulation étant conçus pour exercer sur l'embout une force opposée à celle du fluide en circulation et apte à modifier la taille dudit embout dans le sens correspondant à une augmentation des dimensions de l'ajutage. According to a second embodiment, the tube and the stem are fixed, the regulation means being designed to exert on the mouthpiece a force opposite to that of the fluid in circulation and able to modify the size of said tip in the direction corresponding to an increase dimensions of the nozzle.

Le débit de sortie demeure ici encore constant quelle que soit la pression du fluide d'alimentation. En effet, les moyens de régulation adaptent la taille de l'embout de façon à réduire les dimensions de l'ajutage lorsque la pression du fluide augmente et à augmenter ces dimensions lorsque la pression du fluide diminue.The output rate remains here still constant whatever the pressure of the supply fluid. Indeed, the means of regulation adapt the size of the mouthpiece so as to reduce the dimensions of the nozzle when the fluid pressure increases and to increase these dimensions when the fluid pressure decreases.

De préférence, les moyens de régulation comprennent un élément déformable recouvrant la face de l'embout qui est tournée vers l'intérieur de la tête, l'élément déformable étant extensible radialement sous l'action du fluide en circulation.Preferably, the regulating means comprise an element deformable covering the face of the tip which is turned towards the inside of the head, the deformable element being extensible radially under the action of the circulating fluid.

On précisera ici que l'élément déformable est de préférence en élastomère.It will be specified here that the deformable element is preferably elastomer.

Deux modes d'exécution de la présente invention seront décrits ci-après à titre d'exemples nullement limitatifs en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue en perspective avec arrachement d'une lance d'incendie conforme à l'invention ;
  • la figure 2 est une vue de côté partiellement en coupe de la lance visible sur la figure 1 ; et
  • la figure 3 est un schéma représentant le tube, la tige et l'embout d'une autre lance d'incendie conforme à l'invention.
Two embodiments of the present invention will be described below by way of non-limiting examples with reference to the accompanying drawings in which:
  • Figure 1 is a perspective view with tearing of a fire hose according to the invention;
  • Figure 2 is a side view partially in section of the lance visible in Figure 1; and
  • Figure 3 is a diagram showing the tube, the rod and the tip of another fire hose according to the invention.

La lance d'incendie que l'on peut voir sur les figures 1 et 2 est une lance à main destinée à être maintenue par l'utilisateur pendant son fonctionnement.The fire hose that can be seen in Figures 1 and 2 is a hand held launcher to be held by the user during its operation.

Elle comprend un corps 1 dont l'extrémité postérieure est pourvue d'un raccord tournant 2 destiné à être relié à un tuyau d'alimentation en eau non représenté, et dont l'extrémité antérieure porte une tête creuse 3.It comprises a body 1 whose rear end is provided a rotating union 2 intended to be connected to a supply pipe in water not shown, and whose front end carries a head digs 3.

Le corps 1 comporte une poignée de préhension 4 à sa partie inférieure et une poignée de manoeuvre 5 à sa partie supérieure.The body 1 has a gripping handle 4 at its part lower and a handle 5 at its upper part.

La poignée de manoeuvre 5, qui est en forme de U, est articulée sur un axe 6 perpendiculaire à la poignée de préhension 4 et actionne un robinet situé dans le corps 1 lorsque l'utilisateur la fait pivoter sur l'axe 6.The maneuvering handle 5, which is U-shaped, is articulated on an axis 6 perpendicular to the handle 4 and operates a tap located in the body 1 when the user rotates it on axis 6.

La tête creuse 3 porte sur la surface externe de sa partie antérieure un sélecteur d'effet d'eau 7 que l'utilisateur doit faire tourner sur son axe pour modifier, en fonction des besoins, la forme du jet d'eau sortant de la lance. The hollow head 3 bears on the outer surface of its part previous a water effect selector 7 that the user has to make turn on its axis to modify, as needed, the form water jet coming out of the spear.

Un tube 8 et une tige 9 s'étendant coaxialement dans le tube 8 sont disposés à l'intérieur de la tête 3.A tube 8 and a rod 9 extending coaxially in the tube 8 are arranged inside the head 3.

Le tube 8 est monté coulissant dans la tête 3 tandis que la tige 9 est fixe.The tube 8 is slidably mounted in the head 3 while the rod 9 is fixed.

A son extrémité antérieure, la tige 9 porte un embout 10 dont la périphérie est entourée par la partie antérieure du sélecteur d'effet d'eau 7 et qui délimite avec l'extrémité antérieure du tube 8 un ajutage réglable 11 destiné à livrer passage à l'eau traversant le corps 1 et la tête creuse 3 de la lance.At its front end, the rod 9 carries a tip 10 whose periphery is surrounded by the front part of the effect selector of water 7 and which delimits with the anterior end of the tube 8 a adjustable nozzle 11 for delivering water through the body 1 and the hollow head 3 of the lance.

A son extrémité postérieure, la tige 9 est pourvue de pattes radiales 12 portant une bague 13, les pattes et la bague étant destinées à redresser le flux d'eau parvenant dans la tête 3.At its rear end, the rod 9 is provided with legs radial 12 bearing a ring 13, the legs and the ring being for straightening the flow of water into the head 3.

La lance d'incendie qui vient d'être décrite comprend en outre des moyens de régulation 14 destinés à faire varier automatiquement les dimensions de l'ajutage 11 pour que le débit d'eau sortant de celui-ci demeure constant quelle que soit la pression de l'eau en circulation.The fire hose that has just been described furthermore comprises regulating means 14 for automatically varying the dimensions of the nozzle 11 so that the flow of water coming out of it remains constant regardless of the water pressure in circulation.

Dans le mode de réalisation représenté, les moyens de régulation 14 comprennent un organe élastique situé dans une cavité 15 délimitée par deux collerettes annulaires 16, 17 s'étendant coaxialement et portées respectivement par le tube 8 et la tête 3.In the embodiment shown, the regulation means 14 comprise an elastic member located in a delimited cavity 15 by two annular flanges 16, 17 extending coaxially and carried respectively by the tube 8 and the head 3.

La collerette 16 est prévue à l'extrémité postérieure du tube 8 et s'étend radialement vers l'extérieur, tandis que la collerette 17 est située en avant de la collerette 16 et fait saillie sur la surface interne de la tête 3, radialement vers l'intérieur.The flange 16 is provided at the rear end of the tube 8 and extends radially outwardly, while the flange 17 is located in front of the collar 16 and protrudes on the surface internal of the head 3, radially inwards.

Dans l'exemple représenté, l'organe élastique est constitué par une bague cylindrique en élastomère, mais il va de soi qu'il pourrait avoir une toute autre forme et être réalisé en une toute autre matière.In the example shown, the elastic member is constituted by a cylindrical elastomer ring, but it goes without saying that it could have a completely different form and be realized in a completely different material.

Lorsque de l'eau circule dans la lance, elle vient contre l'extrémité postérieure du tube 8 et exerce sur celui-ci une force dirigée dans le sens de la flèche F sur la figure 2.When water flows in the spear, it comes against the posterior end of the tube 8 and exerts on it a force directed in the direction of arrow F in FIG.

Sous l'action de cette force, le tube 8 est sollicité en direction de l'embout 10 permettant ainsi à l'ajutage 11 d'avoir des dimensions prédéterminées et à l'organe élastique 14 d'être comprimé entre le tube 8 et la tête creuse 3.Under the action of this force, the tube 8 is subjected to direction of the nozzle 10 thus allowing the nozzle 11 to have predetermined dimensions and the elastic member 14 to be compressed between the tube 8 and the hollow head 3.

Lorsque la pression de l'eau en circulation augmente, la sollicitation du tube 8 dans le sens de la flèche F augmente et provoque une diminution des dimensions de l'ajutage 11 ainsi qu'une augmentation de la compression de l'organe élastique.When the pressure of the circulating water increases, the biasing of the tube 8 in the direction of the arrow F increases and causes a decrease in the dimensions of the nozzle 11 and a increased compression of the elastic member.

Inversement, lorsque la pression de l'eau en circulation diminue, la sollicitation du tube 8 dans le sens de la flèche F diminue tandis que l'organe élastique se détend en provoquant une augmentation des dimensions de l'ajutage 11.Conversely, when the pressure of the circulating water decreases, the loading of the tube 8 in the direction of the arrow F decreases while that the elastic member relaxes causing an increase in dimensions of the nozzle 11.

Il suffit bien entendu de choisir judicieusement l'organe élastique 14 pour que les dimensions de l'ajutage 11 varient de telle sorte que le débit d'eau sortant de celui-ci demeure constant quelle que soit la pression de l'eau.It is sufficient, of course, to judiciously choose the organ elastic 14 so that the dimensions of the nozzle 11 vary from such so that the flow of water coming out of it remains constant which whatever the pressure of the water.

Le tube 8a, la tige 9a et l'embout 10a représentés schématiquement sur la figure 3 font partie de la structure interne d'une variante de réalisation de la lance d'incendie décrite en référence aux figures 1 et 2 et correspondent respectivement au tube 8, à la tige 9 et à l'embout 10 de cette lance.The tube 8a, the rod 9a and the tip 10a shown schematically in Figure 3 are part of the internal structure of an alternative embodiment of the fire hose described in reference to FIGS. 1 and 2 and correspond respectively to the tube 8, the rod 9 and the tip 10 of this lance.

Dans cette variante, le tube 8a et la tige 9a sont fixes tandis que des moyens de régulation 14a sont conçus pour exercer sur l'embout 10a une force opposée à celle de l'eau et apte à modifier la taille de ce dernier dans le sens correspondant à une augmentation de l'ajutage 11a.In this variant, the tube 8a and the rod 9a are fixed while that regulation means 14a are designed to exert on the mouthpiece 10a a force opposed to that of water and able to change the size of the latter in the direction corresponding to an increase of the nozzle 11a.

Dans le mode de réalisation représenté sur la figure 3, les moyens de régulation 14a sont constitués par un élément déformable recouvrant la face interne de l'embout 10a et réalisé en un matériau extensible radialement sous l'action de l'eau en circulation, ce matériau étant de préférence en élastomère.In the embodiment shown in FIG. regulating means 14a consist of a deformable element covering the inner face of the tip 10a and made of a material expandable radially under the action of circulating water, this material being preferably of elastomer.

Lorsque de l'eau circule dans la lance conforme à la variante de réalisation selon la figure 3, elle vient contre l'élément déformable 14a et exerce sur celui-ci une force radiale dirigée dans le sens des flèches Fa sur la figure 3.When water circulates in the lance according to the variant of embodiment according to Figure 3, it comes against the deformable element 14a and exerts on it a radial force directed in the direction of the arrows Fa in Figure 3.

Sous l'action de ces forces, l'élément déformable 14a est étiré en direction du tube 8a, permettant ainsi à l'ajutage 11a d'avoir des dimensions prédéterminées.Under the action of these forces, the deformable element 14a is stretched towards the tube 8a, thus allowing the nozzle 11a to have predetermined dimensions.

Lorsque la pression de l'eau en circulation augmente, l'extension de l'élément déformable 14a dans le sens des flèches Fa augmente et s'accompagne d'une diminution des dimensions de l'ajutage 11a.When the pressure of the circulating water increases, the extension of the deformable element 14a in the direction of the arrows Fa increases and is accompanied by a decrease in the dimensions of the nozzle 11a.

Inversement, lorsque la pression de l'eau en circulation diminue, l'élément déformable 14a se rétracte et permet ainsi une augmentation des dimensions de l'ajutage 11a. Conversely, when the pressure of the circulating water decreases, the deformable element 14a retracts and thus allows an increase dimensions of the nozzle 11a.

Il suffit bien entendu de choisir judicieusement l'élément déformable 14a pour que les dimensions de l'ajutage 11a varient de telle sorte que le débit l'eau sortant de celui-ci demeure constant quelle que soit la pression de l'eau.It is sufficient, of course, to judiciously choose the element deformable 14a so that the dimensions of the nozzle 11a vary from so that the flow the water coming out of it remains constant whatever the pressure of the water.

Claims (8)

Lance d'incendie comprenant un corps (1) comportant une première extrémité destinée à être reliée à une source de fluide sous pression et une seconde extrémité portant une tête creuse (3) dans laquelle sont prévus un tube (8;8a) et une tige (9;9a) s'étendant coaxialement dans le tube, la tige portant à son extrémité située à l'opposé du corps (1) un embout (10;10a) délimitant avec le tube un ajutage réglable (11;11a) destiné à livrer passage au fluide traversant le corps et la tête creuse, caractérisée en ce qu'elle comprend des moyens de régulation (14;14a) pour faire varier automatiquement les dimensions de l'ajutage (11;11a) afin que le débit de fluide sortant de celui-ci demeure constant quelle que soit la pression du fluide.A fire lance comprising a body (1) having a first end for connection to a source of pressurized fluid and a second end carrying a hollow head (3) in which a tube (8; 8a) and a rod are provided (9; 9a) extending coaxially in the tube, the rod carrying at its end located opposite the body (1) a nozzle (10; 10a) delimiting with the tube an adjustable nozzle (11; 11a) for delivering fluid passage through the body and the hollow head, characterized in that it comprises regulating means (14; 14a) for automatically varying the dimensions of the nozzle (11; 11a) so that the outgoing fluid flow rate of it remains constant regardless of the fluid pressure. Lance d'incendie selon la revendication 1, caractérisée en ce que le tube (8) est monté coulissant dans la tête creuse (3) tandis que la tige (9) est fixe, les moyens de régulation (14) étant conçus pour exercer sur le tube (8) une force opposée à celle du fluide en circulation et apte à déplacer ledit tube dans le sens correspondant à une augmentation des dimensions de l'ajutage (11).Fire lance according to claim 1, characterized in that the tube (8) is slidably mounted in the hollow head (3) while the rod (9) is fixed, the control means (14) being designed to exert on the tube (8) a force opposite to that of the circulating fluid and able to move said tube in the direction corresponding to an increase in the dimensions of the nozzle (11). Lance d'incendie selon la revendication 2, caractérisée en ce que les moyens de régulation (14) comprennent un organe élastique situé dans une cavité (15) délimitée par deux collerettes annulaires (16, 17) s'étendant coaxialement et portées respectivement par le tube (8) et la tête (3).Fire lance according to Claim 2, characterized in that the regulating means (14) comprise an elastic member situated in a cavity (15) delimited by two annular flanges (16, 17) extending coaxially and borne respectively by the tube (8) and the head (3). Lance d'incendie selon la revendication 3, caractérisée en ce que la collerette (16) du tube (8) est adjacente à la seconde extrémité du corps(1) et s'étend radialement vers l'extérieur tandis que la collerette (17) de la tête (3) s'étend radialement vers l'intérieur, à une distance plus grande de la seconde extrémité du corps (1) que la collerette (16) du tube (8).Fire lance according to claim 3, characterized in that the flange (16) of the tube (8) is adjacent to the second end of the body (1) and extends radially outwards while the flange (17) the head (3) extends radially inwards at a greater distance from the second end of the body (1) than the flange (16) of the tube (8). Lance d'incendie selon la revendication 3 ou 4, caractérisée en ce que l'organe élastique est en élastomère.Fire lance according to claim 3 or 4, characterized in that the elastic member is made of elastomer. Lance d'incendie selon la revendication 1, caractérisée en ce que le tube (8a) et la tige (9a) sont fixes, les moyens de régulation (14a) étant conçus pour exercer sur l'embout une force opposée à celle du fluide en circulation et apte à modifier la taille dudit embout dans le sens correspondant à une augmentation des dimensions de l'ajutage (11a).Fire lance according to claim 1, characterized in that the tube (8a) and the rod (9a) are fixed, the regulation means (14a) being designed to exert on the endpiece a force opposite to that of the fluid in circulation and able to change the size of said nozzle in the direction corresponding to an increase in the dimensions of the nozzle (11a). Lance d'incendie selon la revendication 6, caractérisée en ce que les moyens de régulation (14a) comprennent un élément déformable recouvrant la face de l'embout (10a) qui est tournée vers l'intérieur de la tête (3), l'élément déformable étant extensible radialement sous l'action du fluide en circulation.Fire lance according to claim 6, characterized in that the regulating means (14a) comprise a deformable element covering the face of the end piece (10a) which is turned towards the inside of the head (3), the deformable element being expandable radially under the action of the circulating fluid. Lance d'incendie selon la revendication 7, caractérisée en ce que l'élément déformable est en élastomère.Fire lance according to Claim 7, characterized in that the deformable element is made of elastomer.
EP05291238A 2004-06-11 2005-06-08 Nozzle for fire-fighting with constant flow rate Not-in-force EP1604743B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0406316 2004-06-11
FR0406316A FR2871389B1 (en) 2004-06-11 2004-06-11 FIRE LANCE WITH CONSTANT FLUID FLOW

Publications (2)

Publication Number Publication Date
EP1604743A1 true EP1604743A1 (en) 2005-12-14
EP1604743B1 EP1604743B1 (en) 2011-05-04

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EP05291238A Not-in-force EP1604743B1 (en) 2004-06-11 2005-06-08 Nozzle for fire-fighting with constant flow rate

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US (1) US20050274825A1 (en)
EP (1) EP1604743B1 (en)
AT (1) ATE507903T1 (en)
DE (1) DE602005027775D1 (en)
FR (1) FR2871389B1 (en)

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US7124965B1 (en) * 2004-09-27 2006-10-24 Shin Tai Spurt Water Of The Garden Tools Co., Ltd. Spraying gun
PL3288647T3 (en) 2015-04-30 2021-06-14 Task Force Tips Llc Firefighting nozzle with trigger operated slide valve
CN105288915B (en) * 2015-11-17 2018-05-25 重庆国飞通用航空设备制造有限公司 The airborne comprehensive high-pressure sprayer of fire-fighting
US10610715B1 (en) 2018-05-21 2020-04-07 Michael Taylor Barrier piercing firehouse nozzle assemblies
USD921156S1 (en) * 2019-08-27 2021-06-01 Shin Tai Spurt Water Of The Garden Tools Co., Ltd. Spray gun
USD919751S1 (en) * 2019-09-17 2021-05-18 Shin Tai Spurt Water Of The Garden Tools Co., Ltd. Handheld spray gun
USD914136S1 (en) * 2019-09-17 2021-03-23 Shin Tai Spurt Water Of The Garden Tools Co., Ltd. Spray gun with pseudo carbon fiber pattern
CN112774070A (en) * 2021-01-27 2021-05-11 南通亚龙消防器材有限公司 Adjustable long-range direct-current fire-fighting lance
DE102022118593A1 (en) 2021-07-26 2023-01-26 Palo Alto Research Center Incorporated ANNULAR BUBBLING NOZZLE

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US4492339A (en) 1983-03-02 1985-01-08 Nelson Irrigation Corporation Flow control nozzle
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Also Published As

Publication number Publication date
EP1604743B1 (en) 2011-05-04
US20050274825A1 (en) 2005-12-15
DE602005027775D1 (en) 2011-06-16
ATE507903T1 (en) 2011-05-15
FR2871389B1 (en) 2006-09-22
FR2871389A1 (en) 2005-12-16

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