Orbital welding device with simpler handling of the measurement of residual oxygen
AssigneeIllinois Tool Works Inc.
InventorsMarkus Tamm, Marcel Foh
Life of this patent
Estimating the term…
Abstract
An orbital welding device (1) for welding two pieces of pipe, the orbital welding device (1) having a welding current source (10) in a welding current source housing (11) and an orbital welding head (20), which is separate from the welding current source housing (11) and is connected to the welding current source (10) by a cable (2), the orbital welding head (20) having a chamber (50) for the use of shielding gas (50) and/or the orbital welding device (1) having a purging device (90) for the use of shielding gas, preferably back-up shielding gas or purge gas, the orbital welding device (1) having an oxygen sensor (40), wherein the oxygen sensor (40) is arranged in or on the welding current source housing (11).
Claims10
An orbital welding device for welding two pieces of pipe, the orbital welding device comprising:
- a welding current source in a welding current source housing;
- an orbital welding head, which is separate from the welding current source housing and is connected to the welding current source by means of a cable, the orbital welding head having a chamber for the use of shielding gas and/or the orbital welding device having a purging device for the use of shielding gas, preferably back-up shielding gas or purge gas;
- an oxygen sensor arranged in or on the welding current source housing;
- and
- a switching device configured to switch over between a first state and at least one further state, wherein in the first state the oxygen sensor is configured to measure the oxygen concentration in the shielding gas before the shielding gas has been introduced into the chamber or at least one of the pieces of pipe to be welded to the connecting point of the pieces of pipe, and in the at least one further state the oxygen sensor is configured to measure the oxygen concentration in the chamber or in the interior of at least one of the pieces of pipe to be welded.
An orbital welding device for welding two pieces of pipe, the orbital welding device comprising:
- a welding current source in a welding current source housing;
- an orbital welding head, which is separate from the welding current source housing and is connected to the welding current source via a cable, wherein at least one of:
- the orbital welding head having a chamber for the use of shielding gas;
- or
- the orbital welding device having a purging device for the use of shielding gas;
- an oxygen sensor integrated in a component of the orbital welding device, wherein the oxygen sensor is designed to measure an oxygen concentration in the shielding gas before the shielding gas has been introduced into the chamber or to the connecting point of the pieces of pipe;
- and
- a switching device configured to switch over between a first state and at least one further state, wherein in the first state the oxygen sensor is configured to measure the oxygen concentration in the shielding gas before the shielding gas has been introduced into the chamber or at least one of the pieces of pipe to be welded to the connecting point of the pieces of pipe, and in the at least one further state the oxygen sensor is configured to measure the oxygen concentration in the chamber or in the interior of at least one of the pieces of pipe to be welded.
Dependencies are inferred from the claim text.