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DE872914C - Method and device for fire extinguishing purposes for regulating the amount of liquid to be mixed into the water by a jet pump - Google Patents

Method and device for fire extinguishing purposes for regulating the amount of liquid to be mixed into the water by a jet pump

Info

Publication number
DE872914C
DE872914C DEA3970D DEA0003970D DE872914C DE 872914 C DE872914 C DE 872914C DE A3970 D DEA3970 D DE A3970D DE A0003970 D DEA0003970 D DE A0003970D DE 872914 C DE872914 C DE 872914C
Authority
DE
Germany
Prior art keywords
liquid
water
jet pump
amount
line
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
Application number
DEA3970D
Other languages
German (de)
Inventor
Johannes Schoen
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.)
ALLG FEUERLOESCHER AG
Original Assignee
ALLG FEUERLOESCHER AG
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 ALLG FEUERLOESCHER AG filed Critical ALLG FEUERLOESCHER AG
Priority to DEA3970D priority Critical patent/DE872914C/en
Application granted granted Critical
Publication of DE872914C publication Critical patent/DE872914C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/311—Injector mixers in conduits or tubes through which the main component flows for mixing more than two components; Devices specially adapted for generating foam
    • B01F25/3111—Devices specially adapted for generating foam, e.g. air foam
    • B01F25/31114—Devices specially adapted for generating foam, e.g. air foam with means for introducing an additional component, e.g. in predetermined proportion or in the main component

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Jet Pumps And Other Pumps (AREA)

Description

Die Erfindung betrifft ein Verfahren für Feuerlöschzwecke zum Regeln der Menge der von einer Strahlpumpe in die druckführende Wasserleitung einzubringenden Flüssigkeit, z. B. von Schaumbildner für. die Luftschaumerzeugung. Zu dem Zweck, die von einem als Strahlpumpe ausgebildeten, in den druckführenden Wasserstrom eingeschalteten Zumischer dem Wasser zugemischte Flüssigkeit, z. B. Schaumbildner, hinsichtlich der strömenden Menge zu beeinflussen, sind verschiedene Verfahren bekanntgeworden. So wird z. B. in den Strom der zuzumischenden Flüssigkeit ein Drosselorgan eingeschaltet, durch das die in der Zeiteinheit fließende Flüssigkeitsmenge bestimmt wird, oder es wird eine vor der Treibdüse der Strahlpumpe abzweigende und hinter dem Diffusor derselben wieder in die Druckwasserleitung mundende Zweigleitung mit einem Drosselorgan versehen und durch Änderung des Durchflußwiderstandes der Zweigleitung bewirkt, daß die im engsten Querschnitt der Treibdüse herrschende Wassergeschwindigkeit und damit der zum LAnsaugen der Flüssigkeit verfügbare Unterdruck größer oder kleiner wird, so daß die in der Zeiteinheit angesaugte Flüssigkeitsmenge sich ebenfalls ändert. The invention relates to a control method for fire-fighting purposes the amount of water to be introduced into the pressurized water pipe by a jet pump Liquid, e.g. B. of foaming agents for. the generation of air foam. For the purpose which are switched into the pressurized water flow by a jet pump designed as a jet pump Admixer liquid added to the water, e.g. B. foaming agents, with regard to To influence the flowing amount, various methods have become known. So z. B. switched on a throttle device in the flow of the liquid to be admixed, by which the amount of liquid flowing in the unit of time is determined, or there is one branching off in front of the propulsion nozzle of the jet pump and one behind the diffuser the same branch line opening into the pressurized water line with a throttle element provided and caused by changing the flow resistance of the branch line, that the water velocity prevailing in the narrowest cross section of the propellant nozzle and so that the vacuum available for sucking in the liquid is greater or less so that the amount of liquid sucked in in the unit of time also increases changes.

Im Gegensatz zu diesen bekannten Regelverfahren wird gemäß der Erfindung der druckwasserführenden Leitung eine im Verhältnis geringe Menge Wasser entnommen und der Flüssigkeitssaugkammer der Zumischstrahlpumpe zugeführt. In contrast to these known control methods, according to the invention a relatively small amount of water was taken from the line carrying pressurized water and fed to the liquid suction chamber of the mixing jet pump.

Bei gegebenen Verhältnissen saugt die Strahlpumpe eine gewisse, nach oben begrenzte Menge Flüssigkeit an. Wird nun von außen zwangsweise Wasser in die Flüssigkeitssaugkammer eingebracht, so bleibt für die anzusaugende Flüssigkeitsmenge nur noch die Differenz zwischen der eingebrachten Wassermenge und der überhaupt verfügbaren größten Ansaugmenge der Strahlpumpe übrig. Man kann also durch Änderung einer aus dem Druckwasserraum in den Flüssigkeitssaugraum der Strahlpumpe fließenden Wassermenge die in der -Zeiteinheit angesaugte Flüssigkeitsmenge regeln.Under the given conditions, the jet pump sucks a certain amount of time limited amount of liquid above. Is now forcibly water from the outside into the Introduced liquid suction chamber, so remains for the amount of liquid to be sucked only the difference between the amount of water brought in and that at all largest available suction volume of the jet pump left. So you can by change one flowing from the pressurized water space into the liquid suction space of the jet pump Water volume regulate the amount of liquid sucked in in the time unit.

Gegenüber der Drosselung des Flüssigkeitsstrornes selbst hat die Erfindung den Vorteil, daß die Regelteile nicht mit der gegebenenfalls stark korrodierenden und verklebenden Flüssigkeit in Berührung kommen. Im Vergleich mit dem zur Drosselung eines im Nebenschluß zur Strahlpumpe fließenden Wasserstromes nötigen Regelorgan kann dieses bei der Erfindung erheblich kleiner und mit kleineren Verstellkräften ausgebildet werden, was insbesondere in Verbindung mit einer Einrichtung zur selbsttätigen Regelung der beigemischten Flüssig keitsmenge von Vorteil ist. Compared to the throttling of the liquid flow itself, the Invention has the advantage that the control parts do not interfere with the possibly highly corrosive and sticky liquid come into contact. Compared with the one for throttling a necessary control device in the shunt to the jet pump flowing water flow this can be considerably smaller with the invention and with smaller adjustment forces be formed, which is particularly in connection with a device for automatic Regulation of the amount of liquid added is advantageous.

Claims (2)

In der Zeichnung ist einwAusführungsbeispiel der Erfindung schematisch dargestellt. a ist die Treibdüse, b die Fangdüse mit Diffusor und c der Saugraum einer in den von links nach rechts fließenden Löschwasserstrom eingeschalteten Strahlpumpe. Aus der Druckwasserleitung zweigt die llilfsleitung d ab, in der sich das Regelorgan e befindet. Die dem Löschwasser beizumischende Flüssigkeit f wird aus einem Behälter g durch die Saugleitung ! in den Saugraum c gefördert, wobei in bekannter Weise ein Rückschlagventil i das Einfließen von Wasser aus dem Saugraum c in den Behärter g verhindert. pATENTANSPRÜCHE: I. Verfahren für Feuerlöschzwecke zum Regeln der Menge der von einer Strahlpumpe in die druckfiihrende Wasserleitung einzubringenden Flüssigkeit, z. B. von Schaumbilduer für die Luftschaumerzeugung, dadurch gekennzeichnet, daß die in der Zeiteinheit angesaugte Flüssigkeitsmenge durch Einführen einer regelbaren, der Druckleitung entnommenen Wassermenge in den Saugraum der Strahlpumpe begrenzt wird. One embodiment of the invention is shown schematically in the drawing shown. a is the driving nozzle, b the collecting nozzle with diffuser and c the suction chamber a jet pump switched on in the extinguishing water flow flowing from left to right. The auxiliary line d, in which the control element is located, branches off from the pressurized water line e is located. The liquid f to be mixed with the extinguishing water is taken from a container g through the suction line! promoted in the suction chamber c, in a known manner a check valve i the flow of water from the suction chamber c into the container g prevented. PATENT CLAIMS: I. Procedure for fire extinguishing purposes to regulate the Amount to be introduced into the pressurized water pipe by a jet pump Liquid, e.g. B. of Schaumbilduer for air foam generation, characterized in, that the amount of liquid sucked in in the time unit by introducing a controllable, The amount of water removed from the pressure line is limited into the suction chamber of the jet pump will. 2. Vorrichtung zur Durchführung des Verfahrens nach Anspruch I, dadurch gekennzeichnet, daß durch ein an sich bekanntes Rückschlagventil in der Saugleitung der Strahlpumpe das Einfließen vonDruckwasser-in das Vorratsgefäß für die Zumischflüssigkeit verhindert wird, 2. Apparatus for performing the method according to claim I, characterized characterized in that by a known check valve in the suction line the jet pump allows pressurized water to flow into the storage vessel for the admixing liquid is prevented,
DEA3970D 1943-08-05 1943-08-05 Method and device for fire extinguishing purposes for regulating the amount of liquid to be mixed into the water by a jet pump Expired DE872914C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA3970D DE872914C (en) 1943-08-05 1943-08-05 Method and device for fire extinguishing purposes for regulating the amount of liquid to be mixed into the water by a jet pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA3970D DE872914C (en) 1943-08-05 1943-08-05 Method and device for fire extinguishing purposes for regulating the amount of liquid to be mixed into the water by a jet pump

Publications (1)

Publication Number Publication Date
DE872914C true DE872914C (en) 1953-04-09

Family

ID=6920399

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA3970D Expired DE872914C (en) 1943-08-05 1943-08-05 Method and device for fire extinguishing purposes for regulating the amount of liquid to be mixed into the water by a jet pump

Country Status (1)

Country Link
DE (1) DE872914C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357598A (en) * 1965-09-21 1967-12-12 Dole Valve Co Adjustable liquid dispenser
US5341991A (en) * 1987-09-07 1994-08-30 Mitab Montage & Industriteknik Ab Method and apparatus for atomizing liquids

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357598A (en) * 1965-09-21 1967-12-12 Dole Valve Co Adjustable liquid dispenser
US5341991A (en) * 1987-09-07 1994-08-30 Mitab Montage & Industriteknik Ab Method and apparatus for atomizing liquids

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