WO2009091277A1 - Tête à robinet d'actionnement destinée à des extincteurs à poudre - Google Patents

Tête à robinet d'actionnement destinée à des extincteurs à poudre Download PDF

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Publication number
WO2009091277A1
WO2009091277A1 PCT/RU2008/000020 RU2008000020W WO2009091277A1 WO 2009091277 A1 WO2009091277 A1 WO 2009091277A1 RU 2008000020 W RU2008000020 W RU 2008000020W WO 2009091277 A1 WO2009091277 A1 WO 2009091277A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
locking
diameter
housing
flange
Prior art date
Application number
PCT/RU2008/000020
Other languages
English (en)
Russian (ru)
Inventor
Boris Konstantinovich Zuev
Original Assignee
Obschestvo S Ogranichennoi Otvetstvennostyu 'nauchno-Proizvodstvenny Komplex 'bazalt'
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 Obschestvo S Ogranichennoi Otvetstvennostyu 'nauchno-Proizvodstvenny Komplex 'bazalt' filed Critical Obschestvo S Ogranichennoi Otvetstvennostyu 'nauchno-Proizvodstvenny Komplex 'bazalt'
Priority to PCT/RU2008/000020 priority Critical patent/WO2009091277A1/fr
Publication of WO2009091277A1 publication Critical patent/WO2009091277A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
    • A62C13/62—Portable extinguishers which are permanently pressurised or pressurised immediately before use with a single permanently pressurised container
    • A62C13/64—Portable extinguishers which are permanently pressurised or pressurised immediately before use with a single permanently pressurised container the extinguishing material being released by means of a valve
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
    • A62C13/76—Details or accessories

Definitions

  • the invention relates to fire fighting equipment, namely, to the locking and starting heads of injection powder fire extinguishers, in which the fire extinguishing powder is ejected under excessive pressure, and may find application as a primary means of extinguishing fires of class A (solids), class B (liquid substances) , class C (gaseous substances), electrical installations under voltage up to 1000 V, as well as in automobile, railway and river transport.
  • class A solids
  • class B liquid substances
  • class C gaseous substances
  • electrical installations under voltage up to 1000 V as well as in automobile, railway and river transport.
  • Known manual fire extinguisher containing a cylinder, a locking device with a spring-loaded valve having a rod, a pressure gauge and a siphon tube mounted in the neck under the valve.
  • the siphon tube is freely installed in the neck of the cylinder for axial movement to contact the valve and has a travel stop and a piston mounted on its upper end, while the pressure gauge is located on the valve stem and is made in the form of a flag.
  • the movable piston seal is less reliable than the stationary one, which increases the likelihood of depressurization of the fire extinguisher during storage.
  • the locking-starting head for a powder fire extinguisher comprising a housing with fastening elements to the tank a fire extinguisher, a handle connected to the housing, a shut-off device having a stem with a valve fixed to it, a control lever, a siphon tube, a pressure indicator and spray nozzles.
  • a locking and starting head comprising a housing with fastening elements to a fire extinguisher tank, a handle connected to the housing, a locking device in the form of a hollow rod with a valve and pressure indicator fixed to it, a siphon tube and a spray nozzle.
  • valve and indicator membrane are made in one piece in the form of an elastic hollow glass located inside the hollow stem.
  • diameter of the stem flange on which the valve part formed by the edges of the walls of the glass is fixed is equal to the minimum diameter of the valve seat.
  • the preservation of the shape of the elastic cup during the injection of the fire extinguisher is ensured by the fact that the membrane contacts the package of elastic indicator washers, and the outer side surfaces of the elastic cup repeat the inner contours of the rod in which it is located.
  • the valve opening and closing is controlled by the direct action of the lever on the indicator connected to the valve through the stem and installed coaxially in the housing.
  • the gap between the cylinder of the body and the side surface of the indicator is sealed with a rubber cuff, worn with an interference fit on the rod and pressed against the bottom of the indicator.
  • the disadvantage of this head is the insufficiently high reliability of the locking device when exposed to high pressure of compressed air located in the tank of the fire extinguisher. This is due to the presence of a significant gap between the minimum diameter of the valve seat and the outer diameter of the hollow stem, since to ensure the collection of the head, the diameter of the stem flange is equal to the minimum diameter of the valve seat. Thus, the locking surface of the valve under the influence of pressure flows into the specified gap, while it is strongly deformed, which can lead to destruction of the valve, followed by depressurization of the fire extinguisher. At the same time, the small difference in the diameters of the flange and the stem does not provide reliable fixation of the valve part on the stem.
  • the objective of the invention is to increase the reliability of the locking device. Disclosure of invention
  • the non-contacting portion of the valve is enclosed in a thin-walled shell having at least one opening for communicating the submembrane and subvalvular cavities. It is desirable that said shell be fixed to the valve by crimping onto a return cone.
  • the valve is pressed against the seat by a spring installed in a siphon tube.
  • the siphon tube may have an expanded part for accommodating a spring therein.
  • the housing can be made of two parts rigidly interconnected, one of which is a sleeve with fasteners to the fire extinguisher reservoir and to the siphon tube, and the saddle is formed by the wall of this sleeve.
  • the housing parts are interconnected by contact welding.
  • the valve can be formed by covering the flange and the outer surface of the end part of the stem with a wall of a hollow elastic cup installed in the stem, the bottom of which is a pressure indicator membrane.
  • the design in which the end part of the stem covered by the valve in comparison with the middle part of the stem has an enlarged diameter substantially equal to the diameter of the minimum bore, eliminates the annular gap between the minimum bore of the valve seat bore and the lateral surface adjacent to it in the closed position of the valve stock.
  • the specified gap is within the tolerance for a movable landing. In this way, squeezing the elastic material of the valve into this gap under the influence of pressure is excluded, and the locking conical surface of the valve fits tightly in the seat with high reliability and durability of the joint sealing.
  • the diameter of the flange which is 1.1 to 1.2 of the diameter of the minimum passage section of the seat, is selected, on the one hand, based on the condition of reliable fixation of the valve on it, and on the other hand, on the condition of maintaining the integrity and the necessary strength of the elastic material of the valve.
  • FIG. 1 shows a trigger head of a powder fire extinguisher in accordance with the present invention, a sectional side view; in FIG. 2 shows a view A in FIG. one.
  • the locking-starting head contains a housing 1 made by stamping from sheet metal in one piece with a handle 2.
  • the lever 3 is connected to the housing 1 by means of a swivel 4.
  • a coaxial sleeve 5 attached, for example, by contact welding.
  • An external thread 6 is formed on the outer surface of the sleeve 5 for screwing the locking and starting head into the opening of the fire extinguisher tank (not shown conditionally).
  • a saddle 7 having the shape of a truncated cone is stamped in the upper part of the sleeve 5.
  • a hollow rod 8 made with the possibility of axial movement.
  • the walls of the lower part of the rod 8 are bent outward with the formation of the flange 9.
  • An indicator 11 is located in the upper diameter-enlarged portion of the stem 8 forming the cup 10, and the lever-gear mechanism 12 rotates arrows 13.
  • the indicator 11 is fixed in the cup 10 of the rod 8 by crimping the edges of the cup 10 and then pressing the cap 14. Before by pressing the cap 14, the sealing ring 15 and the glass 16 are installed.
  • the readings of the arrow 13 on the scale 17 (Fig. 2) are read through the window 18, made in the lever 3.
  • an elastic cup 19 In the cavity of the rod 8, repeating its internal contours, an elastic cup 19 is located, the bottom of which is the membrane 20 of the indicator 11, and the edges 8, worn on the flange 9 of the rod 8 and covering its lower extended part, are a valve 21. Outside the rod 8, in contact with the cup 10, a sleeve 22 is inserted that seals the movable connection of the rod 8 to the housing 1 during operation of the fire extinguisher.
  • an elastic washer 23 is mounted kinematically connected with the two-arm lever 24 of the indicator 11.
  • the lever 3 is pivotally connected to the housing 1 (Fig. 1) and locked in its initial position by a pin 26 (Fig. 2).
  • the lever 3 is made by stamping and has a U-shaped cross-section.
  • the side walls of the lever 3 cover the handle 2 of the housing 1 (Fig. 1), and they are made inwardly bent protrusions 27 to prevent the lever 3 from disconnecting.
  • a siphon tube 28 is installed in the lower part of the head by means of, for example, a two-way thread 29.
  • a spring 30 is installed between the rod 8 and the siphon tube 28, which compresses the valve to the seat.
  • an opening 31 is made with an internal thread 32 in which the spray nozzles 33 are installed (Fig. 1).
  • a rubber ring 34 is installed in the groove of the sleeve (Fig. 1).
  • the head works as follows. When extinguishing the fire, the check 26 is removed, releasing the lever 3. After removing the checks 26, the bent ends 27 of the lever 3, covering the handle 2 of the housing 1, prevent the lever 3 from disengaging from the housing 1 and, thus, its loss in case of emergency handling of the fire extinguisher.
  • the arrow 13 of indicator 11 shows the pressure in the tank on a scale 17 (Fig. 2).
  • the position of the arrow 13 against risks “14” corresponds to the state of the inflated fire extinguisher.
  • Monitoring the indications of the indicator 11 can be carried out directly during operation with a fire extinguisher, looking from above through the window 18 in the lever.
  • the two-armed lever 24 (Fig. 1) converts the deformation (movement) of the washer 23 into a rotation of the gear sector, which rotates the tribe on the axis on which arrow 13 is mounted (Fig. 2). Simultaneously with the rotation of the arrow, a spiral spring is connected, connected with the tribe. When the specified pressure is reached, the arrow 13 and the entire mechanical system are in this position throughout the entire storage period.

Landscapes

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

Abstract

L'invention concerne une tête à robinet d'actionnement destinée à des extincteurs à poudre à pression permanente servant à éjecter la poudre d'extinction d'incendies à une surpression; cette tête peut s'utiliser comme moyen primaire d'extinction des incendies de classes A, B et C. La tête à robinet d'actionnement comprend un boîtier (1) avec une tige creuse (8) montée dans ladite tête de façon coaxiale et capable de se déplacer axialement. Un capteur de pression (11) est monté à l'une des extrémités de la tige, et un boudin (9) est formé à son autre extrémité. Une coupe creuse élastique (19), montée dans la tige creuse, entoure le boudin et la surface externe de la partie d'extrémité de la tige et forme ainsi un robinet (21). L'invention se distingue en ce que la partie d'extrémité de la tige (8), entourée de l'extérieur par la paroi de la coupe souple (19), a en comparaison à la partie médiane de la tige un diamètre plus important, qui est égal au diamètre minimal de la coupe de passage du siège, et le diamètre du boudin est égal à 1,1 - 1,2 diamètre de la coupe de passage minimale du siège. Grâce à cette tête de l'invention, on obtient des caractéristiques techniques et économiques élevées ainsi qu'une bonne fiabilité, une bonne étanchéité de la jonction soupape / siège grâce à l'exclusion du risque de passage du caoutchouc de la soupape dans les entrefers, ce qui est important pour les extincteurs à pression permanente dont l'étanchéité doit être assurée sur une longue période.
PCT/RU2008/000020 2008-01-15 2008-01-15 Tête à robinet d'actionnement destinée à des extincteurs à poudre WO2009091277A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/RU2008/000020 WO2009091277A1 (fr) 2008-01-15 2008-01-15 Tête à robinet d'actionnement destinée à des extincteurs à poudre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/RU2008/000020 WO2009091277A1 (fr) 2008-01-15 2008-01-15 Tête à robinet d'actionnement destinée à des extincteurs à poudre

Publications (1)

Publication Number Publication Date
WO2009091277A1 true WO2009091277A1 (fr) 2009-07-23

Family

ID=40885502

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2008/000020 WO2009091277A1 (fr) 2008-01-15 2008-01-15 Tête à robinet d'actionnement destinée à des extincteurs à poudre

Country Status (1)

Country Link
WO (1) WO2009091277A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2739776C2 (ru) * 2019-01-09 2020-12-28 Борис Константинович Зуев Запорно-пусковая головка порошкового огнетушителя
WO2024091138A1 (fr) * 2022-10-27 2024-05-02 Алексей Игоревич СУКАЧЕВ Dispositif de fermeture-actionnement pour extincteurs

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643691A (en) * 1969-02-03 1972-02-22 Charles K Huthsing Jr Valved head assembly for pressurized receptacles
GB2309641A (en) * 1996-02-05 1997-08-06 Brk Brands Inc Fire extinguisher discharge assembly
RU2205672C2 (ru) * 2001-06-13 2003-06-10 Научно-производственный комплекс "Базальт" Запорно-пусковая головка для порошкового огнетушителя
RU2230247C1 (ru) * 2001-10-25 2004-06-10 Данфосс А/С Клапан, в частности клапан радиатора

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643691A (en) * 1969-02-03 1972-02-22 Charles K Huthsing Jr Valved head assembly for pressurized receptacles
GB2309641A (en) * 1996-02-05 1997-08-06 Brk Brands Inc Fire extinguisher discharge assembly
RU2205672C2 (ru) * 2001-06-13 2003-06-10 Научно-производственный комплекс "Базальт" Запорно-пусковая головка для порошкового огнетушителя
RU2230247C1 (ru) * 2001-10-25 2004-06-10 Данфосс А/С Клапан, в частности клапан радиатора

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2739776C2 (ru) * 2019-01-09 2020-12-28 Борис Константинович Зуев Запорно-пусковая головка порошкового огнетушителя
WO2024091138A1 (fr) * 2022-10-27 2024-05-02 Алексей Игоревич СУКАЧЕВ Dispositif de fermeture-actionnement pour extincteurs

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