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GB2153942A - Closure assembly for pressure fluid storage vessel - Google Patents

Closure assembly for pressure fluid storage vessel Download PDF

Info

Publication number
GB2153942A
GB2153942A GB8501357A GB8501357A GB2153942A GB 2153942 A GB2153942 A GB 2153942A GB 8501357 A GB8501357 A GB 8501357A GB 8501357 A GB8501357 A GB 8501357A GB 2153942 A GB2153942 A GB 2153942A
Authority
GB
United Kingdom
Prior art keywords
closure assembly
housing part
pressure fluid
vessel
valve member
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.)
Withdrawn
Application number
GB8501357A
Other versions
GB8501357D0 (en
Inventor
Michael Broadhead
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.)
HAMBLETON BARD Ltd
Original Assignee
HAMBLETON BARD 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
Priority claimed from GB848402822A external-priority patent/GB8402822D0/en
Application filed by HAMBLETON BARD Ltd filed Critical HAMBLETON BARD Ltd
Priority to GB8501357A priority Critical patent/GB2153942A/en
Publication of GB8501357D0 publication Critical patent/GB8501357D0/en
Publication of GB2153942A publication Critical patent/GB2153942A/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • F17C13/06—Closures, e.g. cap, breakable member
    • 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
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • 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
    • F17C2205/0311—Closure means
    • F17C2205/0314—Closure means breakable, e.g. with burst discs
    • 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
    • F17C2205/0335—Check-valves or non-return valves
    • 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
    • F17C2205/0341—Filters
    • 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
    • F17C2205/0382—Constructional details of valves, regulators
    • F17C2205/0385—Constructional details of valves, regulators in blocks or units
    • 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
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel
    • 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
    • F17C2221/013—Carbone dioxide
    • 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
    • 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
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/04—Reducing risks and environmental impact
    • F17C2260/042—Reducing risk of explosion
    • 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
    • F17C2270/00—Applications
    • F17C2270/07—Applications for household use
    • F17C2270/0736—Capsules, e.g. CO2

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

A closure assembly for a fluid storage vessel, the assembly includes a check valve (24) to facilitate pressure fluid dispensing and re-filling, and a bursting disc (48) located in an opening (46) in the side of a main body or housing part of the assembly. So that the pressure acting against the bursting disc (48) can never be greater than that within the pressure vessel, a bleed passage (54) leading to the bursting disc (48) communicates therewith from the inner end of the main body or housing part. <IMAGE>

Description

SPECIFICATION Closure assembly for pressure fluid storage vessel.
The invention relates to closure assemblies for pressure fluid storage vessels, in particular for pressure fluid storage vessels for applying a top pressure of carbon dioxide gas in home brew beer containers.
It is known to provide a pressure fluid storage vessel with a closure assembly including a check valve to facilitate pressure fluid dispensing and re-filling, the check valve having a valve seat and a valve member normally urged by internal pressure in the vessel into sealing contact with the valve seat, the valve member having a stem portion accessible from outside the vessel so that said valve member can be unseated to allow the fluid to be dispensed or to allow the vessel to be recharged with pressure fluid when exhausted.
It is also known for such a storage vessel to include a so-called bursting disc which if the internal pressure of the vessel exceeds a predetermined maximum pressure can burst to allow the pressure fluid to escape to atmosphere.
In one previously known closure assembly as described above, the bursting disc has been located in an opening in the side of a housing part of the assembly. However, the bleed passage leading to the bursting disc has in this case communicated with an axial hole through the closure assembly and on the pressure side of the valve member. This is thought to be disadvantageous, especially when filling the pressure vessel, because the pressure acting against the bursting disc may be greater than that within the pressure vessel and may lead to premature failure of the bursting disc.
The object of the invention is to provide a closure assembly for a pressure fluid storage vessel and including a bursting disc acted upon by pressure within the pressure vessel at all times.
According to the invention, there is provided a closure assembly for a pressure fluid storage vessel, the closure assembly including a check valve having a valve seat formed at an inner end of a main body or housing part and a valve member normally urged by internal vessel pressure into sealing contact with the valve seat, the valve member having a stem portion which extends through an axial hole in the housing part of the closure assembly and which is accessible from outside the vessel so that said valve member can be unseated to allow the fluid to be dispensed or to allow the vessel to be re-charged with pressure fluid when exhausted, a bursting disc element being located in an opening in the side of the housing part and a bleed passage leading to the bursting disc communicating therewith from the inner end of the housing part whereby the internal pressure of the vessel acts on the bursting disc at all times. A shoulder between the valve member and the stem portion will preferably be recessed to accommodate a bonded rubber sealing ring so that the latter provides a resilient surface for forming a fluid tight seal against the seating surface. The main body or housing part may be provided with a hexagonal portion which can be engaged by a spanner, and in this case one face of the hexagonal portion may be provided with a shallow flat bottomed cavity constituting the opening within which the bursting disc is located.A retaining cap will preferably loosely surround the valve member so that the latter is able to move away from the valve seating to only a limited extent. The retaining cap will preferably be provided with a small hole to allow pressure fluid in the storage vessel to which the closure assembly is fitted to communicate with the axial hole in the housing part when the valve member has been moved away from the valve seat. A filter element may be provided in the retaining cap to trap any particles of grit which might be present in the pressure fluid passing through the small hole in the retaining cap.The retaining cap will preferably have threaded connection with a screwthreaded portion of the main body or housing part and in this case the bleed passage leading to the bursting disc and communicating therewith from the inner end of the housing part will preferably open at a shoulder formed at the end of the screwthreaded portion which is engaged by the retaining cap.
In order that the invention may be fully understood and readily carried into effect, the same will now be described, by way of example only, with reference to the accompanying drawing which is a longitudinal section through a closure assembly embodying the invention, the closure assembly being shown to be associated with a pressure fluid storage vessel shown in chain-dotted lines.
Referring now to the drawing, the closure assembly there illustrated includes a main body member with a hexagonal portion 1 2 which can be engaged by a spanner and with a screwthreaded portion 1 4 capable of being entered into the internally screwthreaded neck of a pressure fluid storage vessel such as that shown in chain-dotted lines. At what is the upper end of the assembly in the drawing, the main body member has a configuration by means of which it is adapted to be connected to an inlet valve (not shown) of some closed container which is to be charged with pressure fluid from the storage vessel, that is to say an internally screwthreaded portion 1 6 and an upstanding portion 1 8 located within said screwthreaded portion.
Near to what is the lower end of the assembly in the drawing, the main body mem ber is provided with a further screwthread 20, this being located within the pressure fluid storage vessel shown in chain-dotted lines. At its lower end, the main body member is provided with an annular valve seating surface, this being shown in the drawing to be engaged by a valve member 24 a stem portion 26 of which extends freely through an axial hole 28 which extends completely through the main body member. As drawn, the valve member is held on its seating surface by the pressure of the pressure fluid in the storage vessel. The stem portion 26 is shown to project some distance above the top of the spigot portion (although stiil being below the upper end of the internally screwthreaded portion 16) and forms a valve member unseating pin as will presently be described.
A retaining cap 30 engages the screwthread 20 and loosely surrounds the valve member so that the latter is able to move away from its valve seating surface 22 to a limited extent. A small hole 32 which is provided in the retaining cap allows the pressure fluid in the storage vessel to communicate with the axial hole 28 when the valve member has been moved away from its seating surface. A filter element 33 is provided in the retaining cap to trap any particles of grit which might be present in the pressure fluid passing through the hole 32. The shoulder between the valve member and the stem portion 26 has been recessed to accommodate a rubber sealing ring 44 so that the latter constitutes a resilient surface for forming a fluid tight seal against the seating surface.
As shown, one face of the hexagonal portion 1 2 of the main body member is provided with a shallow flat bottomed cavity 46 within which a bursting disc element 48 is located and secured in position by an annular sealing screw 50. A space behind said bursting disc element, that is to say a shallow bore 52, communicates with the inner end of the housing part, that is to say with the end located within the pressure vessel, by means of a bleed passage 54 which extends longitudinally of the main body member, emerging at the shoulder between the screwthreaded portions 14 and 20.
The arrangement is such that if the pressure fluid storage vessel becomes overpressurised for any reason, that is to say for example because of over-filling or over-heating, the bursting disc element will fail and allow pressure fluid to escape through the bleed passage 54 to atmosphere. However, the hole which extends through the annular sealing screw is relatively small. Consequently, a failure of the bursting disc will not result in an explosive loss of pressure fluid from the storage vessel.

Claims (9)

1. A closure assembly for a pressure fluid storage vessel, the closure assembly including a check valve having a valve seat formed at an inner end of a main body or a housing part and a valve member normally urged by inter nal vessel pressure into sealing contact with the valve seat, the valve member having a stem portion which extends through an axial hole in the housing part of the closure assembly and which is accessible from outside the vessel so that said valve member can be unseated to allow the fluid to be dispensed or to allow the vessel to be re-charged with pressure fluid when exhausted. a bursting disc element being located in an opening in the side of the housing part and a bleed passage leading to the bursting disc communicating therewith from the inner end of the housing part whereby the internal pressure of the vessel acts on the bursting disc at all times
2. A closure assembly according to claim 1.
in which a shoulder between the valve member and the stem portion is recessed to accommodate a bonded rubber sealing ring so that the latter provides a resilient surface for forming a fluid tight seal against the seating surface.
3. A closure assembly according to either one of the preceding claims, in which the main body or housing part is provided with a hexagonal portion which can be engaged by a spanner.
4. A closure assembly according to claim 3, in which one face of the hexagonal portion is provided with a shallow flat bottomed cavity constituting the opening within which the bursting disc is located.
5. A closure assembly according to any one of the preceding claims, in which a retaining cap loosely surrounds the valve member so that the latter is able to move away from the valve seating to only a limited extent.
6. A closure assembly according to claim 5, in which the retaining cap is provided with a small hole to allow pressure fluid in the storage vessel to which the closure assembly is fitted to communicate with the axial hole in the housing part when the valve member has been moved away from the valve seat.
7. A closure assembly according to either one of claims 5 and 6, in which a filter element is provided in the retaining cap to trace any particles of grit which might be present in the pressure fluid passing through the small hole in the retaining cap.
8. A closure assembly according to any one of claims 5 to 7, in which the retaining cap has threaded connection with a screwthreaded portion of the main body or housing part, and the bleed passage leading to the bursting disc and communicating therewith from the inner end of the housing part opens at a shoulder formed at the end of the screwthreaded portion which is engaged by the retaining cap.
9. A closure assembly for a pressure fluid storage vessel, the assembly being con structed, arranged and adapted to operate substantially as hereinbefore described with reference to and as illustrated by the accompanying drawings.
GB8501357A 1984-02-02 1985-01-18 Closure assembly for pressure fluid storage vessel Withdrawn GB2153942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8501357A GB2153942A (en) 1984-02-02 1985-01-18 Closure assembly for pressure fluid storage vessel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB848402822A GB8402822D0 (en) 1984-02-02 1984-02-02 Closure assembly
GB8501357A GB2153942A (en) 1984-02-02 1985-01-18 Closure assembly for pressure fluid storage vessel

Publications (2)

Publication Number Publication Date
GB8501357D0 GB8501357D0 (en) 1985-02-20
GB2153942A true GB2153942A (en) 1985-08-29

Family

ID=26287273

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8501357A Withdrawn GB2153942A (en) 1984-02-02 1985-01-18 Closure assembly for pressure fluid storage vessel

Country Status (1)

Country Link
GB (1) GB2153942A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0960634A3 (en) * 1998-05-25 2002-03-06 Job Lizenz GmbH & Co. KG Temperature responsive safety device for pressure vessel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1062909A (en) * 1964-04-09 1967-03-22 Frederick Fields Stevens Jr Keg tapping device
GB2097082A (en) * 1981-04-22 1982-10-27 Ergas Ltd Improvements in or relating to valves
GB2111154A (en) * 1981-11-17 1983-06-29 Baj Vickers Ltd Fluid flow couplings

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1062909A (en) * 1964-04-09 1967-03-22 Frederick Fields Stevens Jr Keg tapping device
GB2097082A (en) * 1981-04-22 1982-10-27 Ergas Ltd Improvements in or relating to valves
GB2111154A (en) * 1981-11-17 1983-06-29 Baj Vickers Ltd Fluid flow couplings

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0960634A3 (en) * 1998-05-25 2002-03-06 Job Lizenz GmbH & Co. KG Temperature responsive safety device for pressure vessel

Also Published As

Publication number Publication date
GB8501357D0 (en) 1985-02-20

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)