GB1267578A - Foam-producing apparatus for fire-fighting - Google Patents

Foam-producing apparatus for fire-fighting

Info

Publication number
GB1267578A
GB1267578A GB52822/69A GB5282269A GB1267578A GB 1267578 A GB1267578 A GB 1267578A GB 52822/69 A GB52822/69 A GB 52822/69A GB 5282269 A GB5282269 A GB 5282269A GB 1267578 A GB1267578 A GB 1267578A
Authority
GB
United Kingdom
Prior art keywords
valve
pipe
inductor
foam
supplied
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
GB52822/69A
Inventor
John Lawrence Evans
Richard William Josep Wendland
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.)
Chubb Fire Ltd
Original Assignee
Chubb Fire Security Ltd
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 Chubb Fire Security Ltd filed Critical Chubb Fire Security Ltd
Priority to GB52822/69A priority Critical patent/GB1267578A/en
Priority to ZA707248A priority patent/ZA707248B/en
Priority to CA096658A priority patent/CA929749A/en
Publication of GB1267578A publication Critical patent/GB1267578A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C5/00—Making of fire-extinguishing materials immediately before use
    • A62C5/002—Apparatus for mixing extinguishants with water

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Abstract

1,267,578. Mixing flowing liquids in proportions. CHUBB FIRE SECURITY Ltd. 26 Oct., 1970 [28 Oct., 1969], No. 52822/69. Heading B1C. In a foam generating system for an airfield crash tender the pump 1 has a recirclation conduit 30, 32 from its output pipe 9 to its inlet pipe 2, in which is a venturi indicator 31 for foam compound from tank 33. Each hand foam generator 20 (as shown, there can be four) is supplied through a pipe having a flow sensor 21 of the orifice type producing a pressure drop, and downstream thereof is a feedback pipe as at 24, 27 to the induction inlet of the inductor 31, in which is a constant flow valve 28 and a pressure relief valve 29. So long as there is flow from the generator 20 pressure downstream of the orifice 21 is insufficient to open the valve 29, but if the valve 22 be closed, pressure in the feedback pipe rises, the valve 29 opens and liquid flows back to the inductor at a rate controlled by the valve 28 to replace that amount of foam compound which was formerly supplied to the generator 20, so that there is no increase in the proportion of compound in the liquid supplied to the other generators. A foam monitor 38 is supplied from an inductor 42 connected in a separate recirculation pipe circuit 39, 41, 44. In a modification, see Fig. 2 (not shown) the inductor is supplied through an adjustable foam compound/water blending valve (47), which enables the proportions to be adjusted. In an alternative modification (see Fig. 3, not shown) there is a bleed pipe (54) from the pump outlet pipe 9 to the inductor inlet and which is a main bleed valve (55) which is adjustable. The volume of liquid required to be fed back to the inductor from a shut-down generator will vary inversely with the opening of the valve (55), and the feed back pipes are therefore provided instead of the constant flow valves 28, with adjustable valves (56) which may be interconnected with the main bleed valve (55) to operate in a complementary sense thereto.
GB52822/69A 1969-10-28 1969-10-28 Foam-producing apparatus for fire-fighting Expired GB1267578A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB52822/69A GB1267578A (en) 1969-10-28 1969-10-28 Foam-producing apparatus for fire-fighting
ZA707248A ZA707248B (en) 1969-10-28 1970-10-26 Foam-producing apparatus for fire-fighting
CA096658A CA929749A (en) 1969-10-28 1970-10-27 Foam-producing apparatus for fire-fighting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB52822/69A GB1267578A (en) 1969-10-28 1969-10-28 Foam-producing apparatus for fire-fighting

Publications (1)

Publication Number Publication Date
GB1267578A true GB1267578A (en) 1972-03-22

Family

ID=10465449

Family Applications (1)

Application Number Title Priority Date Filing Date
GB52822/69A Expired GB1267578A (en) 1969-10-28 1969-10-28 Foam-producing apparatus for fire-fighting

Country Status (3)

Country Link
CA (1) CA929749A (en)
GB (1) GB1267578A (en)
ZA (1) ZA707248B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564323A1 (en) * 1984-05-18 1985-11-22 Rosenbauer Kg Konrad METHOD AND DEVICE FOR THE PRODUCTION OF EXTINGUISHING AGENTS MIXED WITH AN ADJUVANT

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103585728B (en) * 2013-11-28 2016-06-01 四川森田消防装备制造有限公司 Positive-pressure type froth ratio mixing system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2564323A1 (en) * 1984-05-18 1985-11-22 Rosenbauer Kg Konrad METHOD AND DEVICE FOR THE PRODUCTION OF EXTINGUISHING AGENTS MIXED WITH AN ADJUVANT

Also Published As

Publication number Publication date
CA929749A (en) 1973-07-10
ZA707248B (en) 1971-12-29

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