Tube arrangement and furnace
AssigneeSandvik Intellectual Property AB
InventorsMathias Hareland, Peter Nordin, Thomas Blomfeldt
Life of this patent
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Abstract
A tube arrangement comprising a first metal tube, a second metal tube, a first sleeve part, and a second sleeve part. The first and second sleeve parts are threadedly connected to the first and second metal tubes. The first and second metal tubes are configured to be joined via a butt weld joint. The first sleeve and the second sleeve are configured to be joined via a second butt weld joint. The first sleeve part comprises a first outer surface extending at a first acute angle (α) to an axial center axis of the first sleeve part and the second sleeve part comprises a second outer surface extending at a second acute angle (β) to an axial center axis of the second sleeve part. The present disclosure also relates to a furnace.
Claims31
A tube arrangement comprising a first metal tube, a second metal tube, a first sleeve part, and a second sleeve part,
- wherein a first end region of the first metal tube comprises a first outer threading and a second end region of the second metal tube comprises a second outer threading,
- wherein the first sleeve part is made of metal and comprises a first inner threading and the second sleeve part is made of metal and comprises a second inner threading,
- wherein the first end region is configured to be joined with the second end region via a first butt weld joint,
- wherein a first proximal sleeve end of the first sleeve part is configured to be joined with a second proximal sleeve end of the second sleeve part via a second butt weld joint,
- wherein the first sleeve part comprises a first outer surface extending at a first acute angle to an axial center axis of the first sleeve part and forming a first conical sleeve portion with its wide end at the first proximal sleeve end, and the second sleeve part comprises a second outer surface extending at a second acute angle to an axial center axis of the second sleeve part and forming a second conical sleeve portion with its wide end at the second proximal sleeve end,
- wherein the first sleeve part comprises a first ring shaped portion at a first distal sleeve end of the first sleeve part opposite to the first proximal sleeve end, and wherein the second sleeve part comprises a second ring shaped portion at a second distal end of the second sleeve part opposite to the second proximal sleeve end, and
- wherein each of the first and second ring shaped portions has an inner diameter larger than an outer diameter of each of the first and second outer threadings, and wherein each of the first and second ring shaped portions has a non-threaded inner surface.
A tube arrangement comprising a first metal tube, a second metal tube, a first sleeve part, and a second sleeve part,
- wherein a first end region of the first metal tube comprises a first outer threading and a second end region of the second metal tube comprises a second outer threading,
- wherein the first sleeve part is made of metal and comprises a first inner threading and the second sleeve part is made of metal and comprises a second inner threading,
- wherein the first end region is configured to be joined with the second end region via a first butt weld joint,
- wherein a first proximal sleeve end of the first sleeve part is configured to be joined with a second proximal sleeve end of the second sleeve part via a second butt weld joint,
- wherein the first sleeve part comprises a first outer surface extending at a first acute angle to an axial center axis of the first sleeve part and forming a first conical sleeve portion with its wide end at the first proximal sleeve end, and the second sleeve part comprises a second outer surface extending at a second acute angle to an axial center axis of the second sleeve part and forming a second conical sleeve portion with its wide end at the second proximal sleeve end,
- wherein the first end region comprises a first upset forged tube portion extending at least over an axial length of the first outer threading, and wherein the second end region comprises a second upset forged tube portion extending at least over an axial length of the second outer threading.
Dependencies are inferred from the claim text.