EP0429736A1 - Spritzlanze eines Flüssigkeitsgemisches - Google Patents

Spritzlanze eines Flüssigkeitsgemisches Download PDF

Info

Publication number
EP0429736A1
EP0429736A1 EP89460042A EP89460042A EP0429736A1 EP 0429736 A1 EP0429736 A1 EP 0429736A1 EP 89460042 A EP89460042 A EP 89460042A EP 89460042 A EP89460042 A EP 89460042A EP 0429736 A1 EP0429736 A1 EP 0429736A1
Authority
EP
European Patent Office
Prior art keywords
chamber
wall
conical
lance
internal
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
EP89460042A
Other languages
English (en)
French (fr)
Other versions
EP0429736B1 (de
Inventor
André Le Grouyellec
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE1989614995 priority Critical patent/DE68914995T2/de
Priority to AT8989460042T priority patent/ATE104871T1/de
Publication of EP0429736A1 publication Critical patent/EP0429736A1/de
Application granted granted Critical
Publication of EP0429736B1 publication Critical patent/EP0429736B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • A62C31/12—Nozzles specially adapted for fire-extinguishing for delivering foam or atomised foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge

Definitions

  • the present invention relates to a lance for spraying a mixture of fluids and, more particularly a mixture of water with one or more other liquids or gases.
  • Water lances are also used in law enforcement operations and, in this case, attempts are made to add tear-gas or incapacitating products to the water.
  • Fluid mixing lances can also be used in the chemical industry and for cleaning, decontamination, etc.
  • the liquid mixing lance according to the invention is designed to meet two conditions: on the one hand, to project an effective jet over a long distance and, on the other hand, to instantly produce a homogeneous mixture of liquids.
  • a lance for spraying a mixture of fluids comprising a main liquid inlet pipe followed by a first chamber with divergent conical internal and external walls, the external wall extending the pipe. inlet and the inner wall having its apex opposite the axis of the tubing, said outer wall being pierced with holes through which at least one additional fluid is sprayed into said first chamber, which communicates by other practically longitudinal holes drilled in the periphery of the base of said internal wall with a second chamber bounded by a converging conical side wall which opens into a relatively long outlet pipe.
  • the peripheral gap between the conical inner and outer walls of the first chamber is closed by a cylindrical ferrule.
  • the conical side wall of the second chamber comprises two trunks of cone of angles at the decreasing top from the entry towards the exit.
  • the outlet tubing of the lance is surrounded by an air passage sleeve whose diameter, beyond the outlet of said outlet tubing, is rapidly reduced to a value slightly greater than that of the diameter of the outlet pipe.
  • the lance of FIG. 1 comprises an inlet part 1, an intermediate part 2 and an outlet part 3.
  • the inlet part 1 comprises a part with a cylindrical internal surface 4 followed by a part with a conical internal surface 5, the cone of the part 5 being divergent, considering the direction of flow indicated by the arrows F.
  • the cylindrical part 4 is designed to be connected to a pressure water pipe, not shown.
  • the conical part 5 is pierced with a number of holes 6 which are intended to be connected to a source of fluid to be mixed with water, which will be described in more detail below.
  • the intermediate part 2 is conical internally and externally, the tips of the cones being turned towards that of the cone of the part 5.
  • the upstream surface 7 of the part 2 has an apex angle substantially equal to that of the part 5 as its downstream surface 8.
  • the base 9 of the conical part 2 has the shape of a circular crown pierced with longitudinal holes 10. In the example described, the edge of the crown 9 is connected to the base of the part 5 of the part 1 by a cylindrical part 11 which serves to limit transversely a first conical chamber divergent A in which the water entering through part 4 mixes with the fluid leaving holes 6.
  • the outlet part 3 comprises a cylindrical part 12 which surrounds the crown 9, a converging conical part 13 and a cylindrical part 14.
  • the chamber B, between the diverging conical surface 8 and the converging conical part 13 creates a turbulence which ensures mixing homogeneous water and additional fluid which leaves, at high speed, through part 14.
  • the sum of the cross sections of the holes 10 is substantially equal to the sum of the cross section of the hole 4 and that of the holes 6. Thus, no pressure drop is created during the operation of mixing the fluids.
  • the cross section of the part 14 is less than this sum to impart a high speed to the fluid leaving the lance.
  • a cylindrical ferrule 15 is provided which is externally threaded at its two ends, for screwing, on the one hand, the internal threaded surface of the part 12 of the part 3 and, d on the other hand, the internal threaded surface of the bowl 16 of an annular piece 17 serving for the supply of fluid intended to pass through the holes 6.
  • the central part of the bottom of the bowl 16 is pierced with a hole which allows to thread the sleeve 17 on the external surface of the cylindrical part 4 of the inlet part 1, which has a shoulder 18 against which the sleeve 17 bears to ensure the sealing of an annular chamber C limited d firstly by the bottom of the bowl 16, by the ferrule 15 and the external surface of the conical part 5.
  • a hole 19 is also provided in the sleeve 17 to make the chamber C communicate with the supply line for the additional fluid .
  • the holes 6 open into the chamber C.
  • the cylindrical part 12 of the outlet part 3 also has an annular shoulder 20 which comes into contact with the downstream surface of the crown 9 when the part 3 is screwed onto the ferrule 15.
  • annular shoulder 20 which comes into contact with the downstream surface of the crown 9 when the part 3 is screwed onto the ferrule 15.
  • tests were carried out with a lance in which the water entered chamber A at a pressure of 14 bars and the additional fluid, for example a tear gas, was applied to the inlet 19 at a pressure from 18 to 20 bars.
  • the internal diameter of part 4 was 38 mm
  • that of part 12 was 100 mm and that of part 14 was 23 mm
  • the total length was 407 mm
  • the half-angle at the top of cones 2 and 5 was 28 °
  • the number of holes 6 was 18 and their diameter 4 mm
  • the number of holes 10 was 14 and their diameter 10 mm.
  • the operation of the lance is as follows.
  • the water entering through the tube 4 undergoes a slowing down and a change of direction to meet the cone 2. Therefore, its flow becomes turbulent and the additional fluid leaving through a large number of holes 6 distributed uniformly begins to mix with the water.
  • the passage of the premix through the holes 10 accentuates the homogeneity of the mixture which ends in chamber B where the mixture picks up speed to flow into the barrel 14 in turbulent mode.
  • FIG. 2 In the variant of lance shown schematically in FIG. 2, we used the same reference numbers for designate the same parts as in Fig. 1.
  • Another annular chamber C ′ has been added into which a second additional fluid can be admitted, in liquid or gaseous form.
  • This chamber C ′ is connected to an inlet pipe 19 ′, similar to 19, and holes 6 ′ for entry into the chamber A play the same role as the holes 6.
  • This lance makes it possible to add for example l air to the liquid mixture which is obtained with the lance of FIG. 1.
  • the barrel 14 is surrounded by a sleeve 21, of larger diameter, which extends beyond the barrel by an auxiliary barrel 22 whose diameter is slightly greater than that of the barrel 14.
  • a conical part 23 establishes the connection between the sleeve 21 and the auxiliary barrel 22.
  • the sleeve 21 is open at the rear so that air is sucked into it, which will form a kind of gaseous sheath which prevents the jet of liquid leaving the barrel 14 to touch the walls of the auxiliary barrel 22. This makes it possible to provide a shorter barrel 14 and therefore to reduce the friction of the liquid jet, which improves the concentration of the final jet.
  • the projection lance does not include any moving part, which makes it very simple and very reliable.
  • the different parts of the lance were made of stainless steel, but all or part of the lance could be made of suitable plastic.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Nozzles (AREA)
EP19890460042 1988-09-16 1989-11-28 Spritzlanze eines Flüssigkeitsgemisches Expired - Lifetime EP0429736B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE1989614995 DE68914995T2 (de) 1989-11-28 1989-11-28 Spritzlanze eines Flüssigkeitsgemisches.
AT8989460042T ATE104871T1 (de) 1989-11-28 1989-11-28 Spritzlanze eines fluessigkeitsgemisches.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8812310A FR2636545B1 (fr) 1988-09-16 1988-09-16 Lance de projection d'un melange de fluides

Publications (2)

Publication Number Publication Date
EP0429736A1 true EP0429736A1 (de) 1991-06-05
EP0429736B1 EP0429736B1 (de) 1994-04-27

Family

ID=9370214

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890460042 Expired - Lifetime EP0429736B1 (de) 1988-09-16 1989-11-28 Spritzlanze eines Flüssigkeitsgemisches

Country Status (2)

Country Link
EP (1) EP0429736B1 (de)
FR (1) FR2636545B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0747139A1 (de) * 1995-06-09 1996-12-11 Uchinami Co.,Ltd. Waschverfahren und Vorrichtung, die eine Gasflüssigkeitsgemischedüse verwenden
WO1997038757A1 (en) * 1996-04-16 1997-10-23 National Foam, Inc. Nozzle for use with fire-fighting foams
EP0911082A1 (de) * 1996-07-08 1999-04-28 Nauchno-Issledovatelsky Inst. Nizkikh Temperatur pri MAI(Mosk. Gosudarstvennom Aviatsionnom Inst.-Tekhnicheskom Univers.) Verfahren zur erzeugung eines strahles von gas und tröpfchen, ausrüstung und düse zur durchführung dieses verfahrens
US6102308A (en) * 1998-04-02 2000-08-15 Task Force Tips, Inc. Self-educing nozzle
CN114262043A (zh) * 2021-12-29 2022-04-01 威海丰泰新材料科技股份有限公司 一种高效气液共混污水处理方法及装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2636545B1 (fr) * 1988-09-16 1990-12-07 Legrouyelec Andre Lance de projection d'un melange de fluides
CN102350029B (zh) * 2011-07-28 2013-08-14 广东联塑科技实业有限公司 一种大射程消防水枪

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2062295A5 (de) * 1969-09-18 1971-06-25 Ca Atomic Energy Ltd
EP0083485A1 (de) * 1981-12-28 1983-07-13 Lockheed Corporation Feuerbekämpfungssystem zum Gebrauch in Passagierkabinen von Fahrzeugen
FR2636545A1 (fr) * 1988-09-16 1990-03-23 Legrouyelec Andre Lance de projection d'un melange de fluides

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2062295A5 (de) * 1969-09-18 1971-06-25 Ca Atomic Energy Ltd
EP0083485A1 (de) * 1981-12-28 1983-07-13 Lockheed Corporation Feuerbekämpfungssystem zum Gebrauch in Passagierkabinen von Fahrzeugen
FR2636545A1 (fr) * 1988-09-16 1990-03-23 Legrouyelec Andre Lance de projection d'un melange de fluides

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0747139A1 (de) * 1995-06-09 1996-12-11 Uchinami Co.,Ltd. Waschverfahren und Vorrichtung, die eine Gasflüssigkeitsgemischedüse verwenden
WO1997038757A1 (en) * 1996-04-16 1997-10-23 National Foam, Inc. Nozzle for use with fire-fighting foams
US5779158A (en) * 1996-04-16 1998-07-14 National Foam, Inc. Nozzle for use with fire-fighting foams
AU732533B2 (en) * 1996-04-16 2001-04-26 Kidde Fire Fighting Inc. Nozzle for use with fire-fighting foams
EP0911082A1 (de) * 1996-07-08 1999-04-28 Nauchno-Issledovatelsky Inst. Nizkikh Temperatur pri MAI(Mosk. Gosudarstvennom Aviatsionnom Inst.-Tekhnicheskom Univers.) Verfahren zur erzeugung eines strahles von gas und tröpfchen, ausrüstung und düse zur durchführung dieses verfahrens
EP0911082A4 (de) * 1996-07-08 2000-07-26 Nii Nizkikh Temperatur Pri Mai Verfahren zur erzeugung eines strahles von gas und tröpfchen, ausrüstung und düse zur durchführung dieses verfahrens
US6102308A (en) * 1998-04-02 2000-08-15 Task Force Tips, Inc. Self-educing nozzle
CN114262043A (zh) * 2021-12-29 2022-04-01 威海丰泰新材料科技股份有限公司 一种高效气液共混污水处理方法及装置
CN114262043B (zh) * 2021-12-29 2024-02-09 威海丰泰新材料科技股份有限公司 一种高效气液共混污水处理方法及装置

Also Published As

Publication number Publication date
EP0429736B1 (de) 1994-04-27
FR2636545A1 (fr) 1990-03-23
FR2636545B1 (fr) 1990-12-07

Similar Documents

Publication Publication Date Title
FR2488153A1 (fr) Buse a haut rendement
EP0601329B1 (de) Einrichtung und Verfahren zur Behandlung eines Fluidums durch Dampfinjektion
FR2481148A1 (fr) Buse de pulverisation par atomisation
FR2619023A1 (fr) Injecteur melangeur sous pression
FR2875584A1 (fr) Injecteur a effervescence pour systeme aeromecanique d'injection air/carburant dans une chambre de combustion de turbomachine
EP0429736B1 (de) Spritzlanze eines Flüssigkeitsgemisches
FR2772644A1 (fr) Buse de pulverisation a moyen statique d'inhibition d'ecoulement
WO2007006987A1 (fr) Extincteur a brouillard de liquide et son utilisation
FR2528341A1 (fr) Chalumeau pour l'oxycoupage de metaux
EP2186545B1 (de) Vorrichtung zur Schaumerzeugung für Feuerlösch-Strahlrohr
FR2700482A1 (fr) Micro-diffuseur pour brouillard de particules liquides.
FR2779805A1 (fr) Injecteur de combustible sous forme de brouillard pour bruleur a fioul et bruleur muni d'un tel injecteur
EP0683886B1 (de) Schneekanone
FR3069423A1 (fr) Dispositif de distribution d'un produit cosmetique ou de soin comportant des elements solides rompus lors de la distribution
FR2772887A1 (fr) Bruleur a faible emission d'oxyde d'azote avec circuit de gaz recycle
CH636023A5 (en) Pipe for injecting and spraying liquid waste (residues)
EP0829275B1 (de) Schaumhervorbringende Düse für eine Feuerlöschvorrichtung
FR2731504A1 (fr) Dispositif d'alimentation d'un bruleur a mazout reduisant la pollution
FR2759121A1 (fr) Dipositif d'aspiration d'un fluide a l'interieur d'une conduite de circulation d'un deuxieme fluide
FR2692502A1 (fr) Procédé et dispositif de pulvérisation d'un liquide à l'aide d'au moins un fluide auxiliaire.
EP3140032A1 (de) Injektionsvorrichtung, insbesondere zum injizieren eines kohlenwasserstoffausgangsmaterials in eine raffiniereinheit
EP0507665B1 (de) Zerstäubungskopf eines Feuerlöschers
EP4237160A1 (de) Vorrichtung zur erzeugung eines strahls eines zweiphasigen fluids
FR2519273A1 (fr) Dispositif de projection pour produit solide finement divise
BE518837A (de)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19911011

17Q First examination report despatched

Effective date: 19930617

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19940427

Ref country code: NL

Effective date: 19940427

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19940427

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19940427

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19940427

REF Corresponds to:

Ref document number: 104871

Country of ref document: AT

Date of ref document: 19940515

Kind code of ref document: T

REF Corresponds to:

Ref document number: 68914995

Country of ref document: DE

Date of ref document: 19940601

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19940505

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19941128

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19941130

Ref country code: CH

Effective date: 19941130

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19941130

Ref country code: LI

Effective date: 19941130

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
BERE Be: lapsed

Owner name: LE GROUYELLEC ANDRE

Effective date: 19941130

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19941128

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19950801

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19971023

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981128