GB2059532A - Socket Connection for an Enamelled Vessel - Google Patents

Socket Connection for an Enamelled Vessel Download PDF

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Publication number
GB2059532A
GB2059532A GB7933455A GB7933455A GB2059532A GB 2059532 A GB2059532 A GB 2059532A GB 7933455 A GB7933455 A GB 7933455A GB 7933455 A GB7933455 A GB 7933455A GB 2059532 A GB2059532 A GB 2059532A
Authority
GB
United Kingdom
Prior art keywords
socket
steel
vessel
threaded portion
seat
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.)
Granted
Application number
GB7933455A
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GB2059532B (en
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.)
Hart & Co Pty
Original Assignee
Hart & Co Pty
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 Hart & Co Pty filed Critical Hart & Co Pty
Priority to GB7933455A priority Critical patent/GB2059532B/en
Publication of GB2059532A publication Critical patent/GB2059532A/en
Application granted granted Critical
Publication of GB2059532B publication Critical patent/GB2059532B/en
Expired legal-status Critical Current

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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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/006—Screw-threaded joints; Forms of screw-threads for such joints with straight threads
    • F16L15/008—Screw-threaded joints; Forms of screw-threads for such joints with straight threads with sealing rings
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
    • F16L41/082—Non-disconnectible joints, e.g. soldered, adhesive or caulked joints
    • F16L41/084—Soldered joints

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pressure Vessels And Lids Thereof (AREA)

Abstract

A steel socket (12) welded to an internally enamelled steel vessel (10) has an internal shoulder (22) against which an O-ring seal (30) is pressed by a non-ferrous socket (24). The enamel extends up to the shoulder (22) so that the un-enamelled screw thread (20) is not exposed to the water within the vessel and is thereby less prone to corrosion. <IMAGE>

Description

SPECIFICATION Socket Connection for an Enamelled Vessel The present invention relates to a socket connection for an enamelled steel vessel in which there is little or no bare ferrous metal presentation to the contents of the vessel. In the past it has been customary to projection weld steel pipe sockets to holes cut in steel vessels and, with a spray application, enamel the vessel up to the threaded portion of the socket. However, there is a need for a fitting which will reduce bare ferrous metal presentation to the contents of the vessel, particularly where a dip or vacuum type enamelling process is used such as for solar hot water storage vessels.In accordance with the present invention there is provided an internally enamelled steel vessel having a steel socket welded thereto, characterised in that the steel socket comprises a parallel portion adjacent the vessel, an internally threaded portion remote from the vessel and a seat located between the parallel and threaded portions, said steel socket being internally enamelled except for the internally threaded portion thereof.
The steel socket is welded to the vessel prior to enamelling. In the enamelling process the interior of the vessel is coated with a layer of enamel composition through an appropriate aperture. A blanking plug is inserted in the socket to protect the internally threaded portion from the enamel.
After completion of enamelling any excess material may be removed from the socket under gravity through the blanking plug such as by removing a core plug therefrom. Subsequently the vessel is heated to dry the enamel coating and then the blanking plug is removed. Then the vessel is heated to glaze the enamel coating.
Thus, the steel socket is enamelled in the parallel portion and the seat thereof but not in the internally threaded portion thereof.
A further non-ferrous socket which may be of brass is inserted in the steel socket after enamelling. The non-ferrous socket has an external thread matching the internal thread of the steel socket and an 0 ring groove. An 0 ring seal is fitted in the 0 ring groove such that when the non-ferrous socket is inserted in the steel socket the 0 ring seal is compressed against the seat in the steel socket. Thus, the 0 ring seal forms a seal preventing the contents of the vessel contacting the non-enamelled internal threaded portion of the steel socket.
The present invention will now be described, by way of example, with reference to the accompanying drawing which is a fragmentary schematic sectional view through a steel vessel fitting with a socket in accordance with the present invention.
In the drawing, there is shown a steel vessel 10 (only part of which can be seen) having welded thereto a steel socket 12. The welded connection between the vessel 10 and socket 12 is formed internally of the vessel as shown at 14 and 16. The steel socket 12 comprises a parallel portion 18 adjacent the steel vessel 10 and an internally threaded portion 20 remote from the steel vessel 10.
An angled seat 22 is located between the parallel portion 18 and the threaded portion 20.
In manufacture, as described above, the steel vessel 10 is internally enamelled with a vitreous enamel and the enamel layer extends into the socket 12 as far as the seat 22. A hexagonal headed brass socket 24 is inserted within the steel socket 12. The brass socket 24 comprises an externally threaded portion 26 with threads matching those of the internally threaded portion of the socket 12. The brass socket 24 further comprises an 0 ring groove 28 in which is fitted an 0 ring seal 30. There is also a short parallel portion 31 in the brass socket 24 between the threaded portion 26 and the 0 ring groove 28. As shown, the brass socket 24 is inserted into the steel socket 12 until the 0 ring seal 30 is compressed against the seat 22 to a predetermined extent. This forms a seal which prevents the contents of the vessel 10 contacting the non-enamelled threaded portion 20.
The brass socket 24 shown in the drawing is also internally threaded and is arranged to mount a sacrificial anode which is located within the vessel 10 to inhibit corrosion of the vessel 10.
However, the steel socket of the present invention is of general applicability in mounting members such as pipes to steel vessels.
The brass socket 24 further comprises an additional 0 ring groove 32 between the hexagonal head and threaded portion 26 thereof.
The groove 32 contains an 0 ring seal 34 which fits into a short section of the steel socket 12 prior to commencement of the internal thread thereof to provide a seal against atmospheric corrosion.
Thus, the internally threaded portion 20 is protected against external corrosion allowing easy removal of connections if this is necessary at any time. Modifications and variations such as would be apparent to a skilled addressee are deemed within the scope of the present invention For example, the steel socket 12 could be provided with a further parallel portion and seat between the internally threaded portion 20 and the seat 22. The additional seat is located adjacent the internally threaded portion 20 and enables a rubber sealing cup to be seated. In this way the steel socket 12 becomes enamelled in the seat 22 and the further parallel portion. Thus, the enamel extends beyond the 0 ring seal 30 and provides a margin of safety in the event that the edge of the enamel layer is defective in any way.
Claims
1. An internally enamelled steel vessel having a steel socket welded thereto, characterised in that the steel socket comprises a parallel portion adjacent the vessel, an internally threaded portion remote from the vessel and a seat located between the parallel and threaded portions, said steel socket being internally enamelled except for the internally threaded portion thereof.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Socket Connection for an Enamelled Vessel The present invention relates to a socket connection for an enamelled steel vessel in which there is little or no bare ferrous metal presentation to the contents of the vessel. In the past it has been customary to projection weld steel pipe sockets to holes cut in steel vessels and, with a spray application, enamel the vessel up to the threaded portion of the socket. However, there is a need for a fitting which will reduce bare ferrous metal presentation to the contents of the vessel, particularly where a dip or vacuum type enamelling process is used such as for solar hot water storage vessels.In accordance with the present invention there is provided an internally enamelled steel vessel having a steel socket welded thereto, characterised in that the steel socket comprises a parallel portion adjacent the vessel, an internally threaded portion remote from the vessel and a seat located between the parallel and threaded portions, said steel socket being internally enamelled except for the internally threaded portion thereof. The steel socket is welded to the vessel prior to enamelling. In the enamelling process the interior of the vessel is coated with a layer of enamel composition through an appropriate aperture. A blanking plug is inserted in the socket to protect the internally threaded portion from the enamel. After completion of enamelling any excess material may be removed from the socket under gravity through the blanking plug such as by removing a core plug therefrom. Subsequently the vessel is heated to dry the enamel coating and then the blanking plug is removed. Then the vessel is heated to glaze the enamel coating. Thus, the steel socket is enamelled in the parallel portion and the seat thereof but not in the internally threaded portion thereof. A further non-ferrous socket which may be of brass is inserted in the steel socket after enamelling. The non-ferrous socket has an external thread matching the internal thread of the steel socket and an 0 ring groove. An 0 ring seal is fitted in the 0 ring groove such that when the non-ferrous socket is inserted in the steel socket the 0 ring seal is compressed against the seat in the steel socket. Thus, the 0 ring seal forms a seal preventing the contents of the vessel contacting the non-enamelled internal threaded portion of the steel socket. The present invention will now be described, by way of example, with reference to the accompanying drawing which is a fragmentary schematic sectional view through a steel vessel fitting with a socket in accordance with the present invention. In the drawing, there is shown a steel vessel 10 (only part of which can be seen) having welded thereto a steel socket 12. The welded connection between the vessel 10 and socket 12 is formed internally of the vessel as shown at 14 and 16. The steel socket 12 comprises a parallel portion 18 adjacent the steel vessel 10 and an internally threaded portion 20 remote from the steel vessel 10. An angled seat 22 is located between the parallel portion 18 and the threaded portion 20. In manufacture, as described above, the steel vessel 10 is internally enamelled with a vitreous enamel and the enamel layer extends into the socket 12 as far as the seat 22. A hexagonal headed brass socket 24 is inserted within the steel socket 12. The brass socket 24 comprises an externally threaded portion 26 with threads matching those of the internally threaded portion of the socket 12. The brass socket 24 further comprises an 0 ring groove 28 in which is fitted an 0 ring seal 30. There is also a short parallel portion 31 in the brass socket 24 between the threaded portion 26 and the 0 ring groove 28. As shown, the brass socket 24 is inserted into the steel socket 12 until the 0 ring seal 30 is compressed against the seat 22 to a predetermined extent. This forms a seal which prevents the contents of the vessel 10 contacting the non-enamelled threaded portion 20. The brass socket 24 shown in the drawing is also internally threaded and is arranged to mount a sacrificial anode which is located within the vessel 10 to inhibit corrosion of the vessel 10. However, the steel socket of the present invention is of general applicability in mounting members such as pipes to steel vessels. The brass socket 24 further comprises an additional 0 ring groove 32 between the hexagonal head and threaded portion 26 thereof. The groove 32 contains an 0 ring seal 34 which fits into a short section of the steel socket 12 prior to commencement of the internal thread thereof to provide a seal against atmospheric corrosion. Thus, the internally threaded portion 20 is protected against external corrosion allowing easy removal of connections if this is necessary at any time. Modifications and variations such as would be apparent to a skilled addressee are deemed within the scope of the present invention For example, the steel socket 12 could be provided with a further parallel portion and seat between the internally threaded portion 20 and the seat 22. The additional seat is located adjacent the internally threaded portion 20 and enables a rubber sealing cup to be seated. In this way the steel socket 12 becomes enamelled in the seat 22 and the further parallel portion. Thus, the enamel extends beyond the 0 ring seal 30 and provides a margin of safety in the event that the edge of the enamel layer is defective in any way. Claims
1. An internally enamelled steel vessel having a steel socket welded thereto, characterised in that the steel socket comprises a parallel portion adjacent the vessel, an internally threaded portion remote from the vessel and a seat located between the parallel and threaded portions, said steel socket being internally enamelled except for the internally threaded portion thereof.
2. A steel vessel as claimed in claim 1, characterised in that a further non-ferrous socket is inserted in the steel socket, the non-ferrous socket has an external thread matching the internal thread of the steel socket and an 0 ring groove containing an 0 ring seal, and the 0 ring seal is sealingly compressed against the seat in the steel socket.
3. A steel vessel as claimed in claim 2, characterised in that the non-ferrous socket is internally threaded to provide a mounting for a sacrificial anode to be located in the vessel.
4. A steel vessel as claimed in any one of the preceding claims, characterised in that the nonferrous socket comprises an 0 ring groove containing an 0 ring seal which sealingly engages with an outer portion of the steel socket to protect the internal thread of the steel socket against atmospheric corrosion.
5. A steel vessel as claimed in any one of the preceding claims, characterised in that the steel socket comprises a further parallel portion and seat between the internally threaded portion and the first mentioned seat, the further seat being located adjacent the internally threaded portion.
6. An internally enamelled steel vessel having a steel socket welded thereto, substantially as herein described with reference to and as illustrated in the accompanying drawing.
GB7933455A 1979-09-27 1979-09-27 Socket connection for an enamelled vessel Expired GB2059532B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7933455A GB2059532B (en) 1979-09-27 1979-09-27 Socket connection for an enamelled vessel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7933455A GB2059532B (en) 1979-09-27 1979-09-27 Socket connection for an enamelled vessel

Publications (2)

Publication Number Publication Date
GB2059532A true GB2059532A (en) 1981-04-23
GB2059532B GB2059532B (en) 1983-09-14

Family

ID=10508092

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7933455A Expired GB2059532B (en) 1979-09-27 1979-09-27 Socket connection for an enamelled vessel

Country Status (1)

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GB (1) GB2059532B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0152617A2 (en) * 1984-02-22 1985-08-28 Anton Hummel GmbH Metallwarenfabrik Sealing device
EP0747621A1 (en) * 1995-06-08 1996-12-11 Robert Bosch Gmbh Hydraulic control valve in modular design
EP1659329A1 (en) * 2004-11-23 2006-05-24 Fenis Teknik Ürünler A.S. Method and device for eliminating corrosion at connection ends of heating installations, particularly aluminum panel radiators
WO2017157412A1 (en) * 2016-03-14 2017-09-21 Husqvarna Ab Water-tap connector, water-tap connector assembly, and water-tap arrangement
CN108240521A (en) * 2016-12-26 2018-07-03 郑志伟 Screw connection structure with enamel/glass lined tap or penstock
CN108317286A (en) * 2017-01-14 2018-07-24 郑志伟 Enamel/enamel technique water tap valve interior tooth loose joint structure
US20220065372A1 (en) * 2017-03-27 2022-03-03 Ad-Venta Mixed female connector or port

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0152617A2 (en) * 1984-02-22 1985-08-28 Anton Hummel GmbH Metallwarenfabrik Sealing device
EP0152617A3 (en) * 1984-02-22 1986-05-21 Anton Hummel Gmbh Metallwarenfabrik Sealing device
EP0747621A1 (en) * 1995-06-08 1996-12-11 Robert Bosch Gmbh Hydraulic control valve in modular design
EP1659329A1 (en) * 2004-11-23 2006-05-24 Fenis Teknik Ürünler A.S. Method and device for eliminating corrosion at connection ends of heating installations, particularly aluminum panel radiators
WO2017157412A1 (en) * 2016-03-14 2017-09-21 Husqvarna Ab Water-tap connector, water-tap connector assembly, and water-tap arrangement
CN108240521A (en) * 2016-12-26 2018-07-03 郑志伟 Screw connection structure with enamel/glass lined tap or penstock
CN108317286A (en) * 2017-01-14 2018-07-24 郑志伟 Enamel/enamel technique water tap valve interior tooth loose joint structure
US20220065372A1 (en) * 2017-03-27 2022-03-03 Ad-Venta Mixed female connector or port

Also Published As

Publication number Publication date
GB2059532B (en) 1983-09-14

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PCNP Patent ceased through non-payment of renewal fee