EP0424644B1 - Druckgasbehälter mit einer Sicherheitsvorrichtung zum Ableiten von Flammenrückschlägen - Google Patents

Druckgasbehälter mit einer Sicherheitsvorrichtung zum Ableiten von Flammenrückschlägen Download PDF

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Publication number
EP0424644B1
EP0424644B1 EP90116896A EP90116896A EP0424644B1 EP 0424644 B1 EP0424644 B1 EP 0424644B1 EP 90116896 A EP90116896 A EP 90116896A EP 90116896 A EP90116896 A EP 90116896A EP 0424644 B1 EP0424644 B1 EP 0424644B1
Authority
EP
European Patent Office
Prior art keywords
baffle plate
valve
gas container
pressurised gas
safety device
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 - Lifetime
Application number
EP90116896A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0424644A1 (de
Inventor
Hans-Jürgen Dipl.-Ing. Sontag
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.)
Linde GmbH
Original Assignee
Linde GmbH
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 Linde GmbH filed Critical Linde GmbH
Priority to AT90116896T priority Critical patent/ATE97474T1/de
Publication of EP0424644A1 publication Critical patent/EP0424644A1/de
Application granted granted Critical
Publication of EP0424644B1 publication Critical patent/EP0424644B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
    • F17C13/123—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures for gas bottles, cylinders or reservoirs for tank vehicles or for railway tank wagons
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C4/00—Flame traps allowing passage of gas but not of flame or explosion wave
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/06—Vessel construction using filling material in contact with the handled fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0329—Valves manually actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/018—Acetylene
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—Single phase gaseous, e.g. CNG, GNC

Definitions

  • the invention relates to pressurized gas containers with a porous filling compound soaked in a solvent and in which an explosive gas is contained in solution, a safety device being provided between a valve opening and the filling compound for discharging flashbacks.
  • the porous filling compound for example a monolithic block of calcium silicate compound, is impregnated with a solvent, for example acetone, in which, for example, acetylene is dissolved.
  • acetylene is a widely used welding gas. During welding, there may be flashbacks in the gas supply line that continue into the compressed gas tank. There, the acetylene will ignite, resulting in a decomposition of the gas, which is accompanied by a release of heat, which further increases the pressure and temperature.
  • the monolithic mass block is intended to limit the penetration of the flame beam and thus limit the heat release during gas ignition. It therefore has a protective effect against flame flashbacks, which is further supported by the fact that, according to the safety regulations, free bottle volume per volume unit may only contain a certain amount of acetylene, for example 0.20 kg / l.
  • Such a pressure gas container is described in the form of an acetylene pressure gas bottle in DE-PS 510 486.
  • a bundle of resilient, fan-shaped metal strips, which are arranged in the gas bottle immediately below the valve opening, is provided there to stop the flashbacks and have the task of redirecting the flame jet in the direction of the heat-dissipating inner wall of the gas bottle in order to bring about an immediate extinguishing of the flames.
  • Disadvantages of this flame arrester are its complicated structure, which requires expensive and complex production, and the inconvenient and uncontrollable introduction of the device into the gas bottle.
  • the present invention is therefore based on the object of avoiding the disadvantages mentioned and of providing a pressurized gas container of the type mentioned at the outset which has an economically producible, simply constructed and reliably functioning safety device for discharging flashbacks.
  • the safety device consists of a baffle plate arranged perpendicular to the central valve opening axis and spaced from the inner wall of the compressed gas container.
  • a baffle plate is simple and inexpensive to manufacture and fulfills the purpose of diverting the flame jet entering the compressed gas container from the valve opening in the direction of the heat-dissipating metallic inner wall of the pressurized gas container and the likewise heat-dissipating metal mass of the valve.
  • the energy inherent in the flame beam is conducted outside through the metal.
  • the security device according to the invention further increases the security against flashback that is already present through the filling compound.
  • the baffle plate consists of a circular sheet steel plate, the diameter of which does not exceed the diameter of the bottle neck opening for the valve.
  • baffle plate The introduction of the baffle plate into the compressed gas container can be facilitated if the baffle plate is centrally penetrated by a wire pin, the two ends of which protrude beyond the baffle plate.
  • the end opposite the valve opening is pointed and is fixed in the filling compound.
  • the other end of the wire pin serves as an assembly aid.
  • the baffle plate is concavely curved toward the valve opening in order to effect a more targeted flame beam deflection.
  • the baffle plate is attached to the inside of the compressed gas container valve at a distance from it. This creates a combination of valve and safety device.
  • the safety device therefore does not need to be installed separately, but is installed together with the valve.
  • the baffle plate is formed by the bottom of a nipple screwed into the valve cone, which has an axial bore connected to the valve bore and radial bores in the area near the bottom is provided, which are connected to the axial bore.
  • the radial holes direct the flame jet towards the steel jacket of the compressed gas container.
  • the nipple is preferably designed as a hexagon nipple, with a radial bore being made centrally in each hexagon flank. In this way, the flame beam is distributed very regularly over the circumference of the hexagon.
  • the compressed gas container is an acetylene compressed gas bottle, the steel jacket 1 of which is a monolithic mass block 2 made of a highly porous calcium silicate mass surrounds.
  • a valve opening 3 is provided in a bottle neck 4.
  • a commercially available valve 5 is fastened in the valve opening 3.
  • the bottle neck 4 is surrounded by a neck ring 6, which has a screw thread 7 for receiving a screw cap.
  • the mass block 2 is spaced from the inner surface of the steel jacket 1 at least in the upper region of the compressed gas bottle.
  • a circular baffle plate 8 is arranged perpendicular to the central axis, which lies in a recess 9 at the upper end of the mass block 2 in the figure and whose diameter does not exceed the diameter of the valve opening 3.
  • the baffle plate 8 is penetrated centrally by a pin 10 which projects beyond both sides of the baffle plate and whose longer end opposite the valve opening 3 is pointed and fixed in the mass block 2.
  • the pin 10, more precisely its end facing the valve opening 3, serves on the one hand as an assembly aid when introducing the baffle plate 8 into the bottle interior, and on the other hand the baffle plate 8 is fixed by the end of the pin 10 protruding into the mass block 2.
  • the baffle plate 8 is made of sheet steel. As shown in FIG. 3, it is possible to concave the baffle plate 8 towards the valve opening 3. Furthermore, there are also variants, as shown in FIGS. 4 and 5, in which the baffle plate 8 is attached directly to the underside of the valve 5 via webs 11 and is screwed together with the latter into the valve opening 3.
  • FIG. 6 shows a valve 5, into the valve cone 12 of which a nipple 13 designed as a hexagonal nipple is screwed.
  • the nipple 13 has an axial bore 14 which connects to the valve bore 15 of the valve 5.
  • the end of the nipple 13 which is arranged outside the valve cone 12 is formed by a base 16 which closes the axial bore 15 and takes over the function of the baffle plate.
  • the flame jet is derived through radial bores 17 in the area of the nipple 13 near the bottom, which are connected to the axial bore 14.
  • the bores 17 are made centrally in the hexagonal surfaces of the nipple.
  • the mode of operation is as follows:
  • the flame jet penetrating the compressed gas bottle in the event of a flashback through the valve 5 and the valve opening 3 is reflected by the baffle plate to the inner surface of the steel jacket 1 and to the metal mass of the valve 5, where the flame energy is recorded and forwarded to the outside.
  • the safety of such a compressed gas bottle is thus considerably improved in a simple manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP90116896A 1989-09-06 1990-09-03 Druckgasbehälter mit einer Sicherheitsvorrichtung zum Ableiten von Flammenrückschlägen Expired - Lifetime EP0424644B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90116896T ATE97474T1 (de) 1989-09-06 1990-09-03 Druckgasbehaelter mit einer sicherheitsvorrichtung zum ableiten von flammenrueckschlaegen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3929649 1989-09-06
DE3929649 1989-09-06
DE4015337A DE4015337A1 (de) 1989-09-06 1990-05-12 Druckgasbehaelter mit einer sicherheitsvorrichtung zum ableiten von flammenrueckschlaegen
DE4015337 1990-05-12

Publications (2)

Publication Number Publication Date
EP0424644A1 EP0424644A1 (de) 1991-05-02
EP0424644B1 true EP0424644B1 (de) 1993-11-18

Family

ID=25884833

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90116896A Expired - Lifetime EP0424644B1 (de) 1989-09-06 1990-09-03 Druckgasbehälter mit einer Sicherheitsvorrichtung zum Ableiten von Flammenrückschlägen

Country Status (6)

Country Link
EP (1) EP0424644B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU631004B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CZ (1) CZ278162B6 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (2) DE4015337A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES2048381T3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SK (1) SK278195B6 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE510486C (de) * 1930-10-20 Vulkan Akt Ges Fuer Bergbau Un Schutzvorrichtung fuer Dissousflaschen
GB191112133A (en) * 1911-05-19 1911-12-30 Friedrich Wanz Device for the Prevention of Ignition when Opening Bottles containing Gas Under Pressure.
CH146108A (de) * 1930-03-19 1931-03-31 Elektrochemische Ges Mit Besch Einrichtung an explosive Stoffe enthaltenden Hohlkörpern zur Verhinderung der Fortpflanzung von Explosionen.
JPS5838238Y2 (ja) * 1980-12-25 1983-08-29 日本コイン株式会社 溶解アセチレン容器の逆火防止器

Also Published As

Publication number Publication date
DE59003536D1 (de) 1993-12-23
DE4015337C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-11-07
CZ278162B6 (en) 1993-09-15
CS9004330A2 (en) 1991-10-15
AU631004B2 (en) 1992-11-12
SK433090A3 (en) 1996-03-06
DE4015337A1 (de) 1991-03-21
SK278195B6 (en) 1996-03-06
EP0424644A1 (de) 1991-05-02
ES2048381T3 (es) 1994-03-16
AU6201690A (en) 1991-03-14

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