Welding power system with integrated purge gas control

Patent metadata

Field	Value
Publication number	US-11278982-B2
Application number	US-201916273702-A
Country	US
Kind code	B2
Filing date	Feb 12, 2019
Priority date	Feb 2, 2015
Publication date	Mar 22, 2022
Grant date	Mar 22, 2022

Abstract

A welding power system including a controller with (a) a data input device via which a an operator can input parameters relating to a volume of an interior of one more pieces to be welded and (b) that calculates and outputs a purge time, the purge time being a time period needed to replace an atmosphere within the volume with a purge gas at a predetermined flow rate of the purge gas.

First claim

What is claimed is:

1. A welding power system comprising:
one or more oxygen sensors arranged within a volume of an interior of one more pieces to be welded;
a wired communication line configured to connect the one or more oxygen sensors to an oxygen analyzer outside of the volume, the wired communication line extending from within the interior, past a dam configured to seal the volume, and to the oxygen analyzer, wherein the one or more oxygen sensors are configured to:
measure an oxygen level while arranged within the volume;
generate signals indicative of an oxygen level within the volume; and
transmit the signals out from the volume via the wired or wireless communication line; and

a controller configured to:
receive the signals indicative of the oxygen level via the wired or a wireless communication line; and
receive data from a data input device via which an operator can input parameters of or relating to a value of the volume of the interior of the one more pieces to be welded.

2. The welding power system of claim 1 , wherein the controller is logically configured to receive an output from a flow meter and monitor flow of the purge gas into the volume.

3. The welding power system of claim 1 , wherein the controller is logically configured to receive outputs from the one or more oxygen sensors and determine if a threshold oxygen level within the volume is met.

4. The welding power system of claim 1 , wherein the one or more oxygen sensors are further configured to:
calculate and output a purge time, the purge time being a time period needed to replace an atmosphere within the volume with a purge gas at a predetermined flow rate of the purge gas; and
control flow of a purge gas into the volume based on the oxygen level.

5. The welding power system of claim 4 , wherein:
the controller is logically configured to receive an output from a flow meter and monitor flow of the purge gas into the volume;
the welding power system includes a memory in communication with the controller; and
the controller is logically configured to store in the memory purge gas flow measurements, oxygen level measurements, the purge gas parameters, the purge time, or time stamp data associated with any of the foregoing, or any combination of the foregoing.

6. The welding power system of claim 1 , wherein the controller includes a communication module and the controller is logically configured to signal elapse of purge time by communicating an alert to the operator via the communications module.

7. The welding power system of claim 1 , further including an audible alert device in communication with the controller, and the controller is logically configured to signal elapse of purge time by communicating an alert to the operator via the audible alert device.

8. The welding power system of claim 1 , further including a visual alert device in communication with the controller, and the controller is logically configured to signal end of purge time by communicating an alert to the operator via the visual alert device.

9. The welding power system of claim 1 , further including a communications module in communication with the controller, and the controller is logically configured to communicate a message via the communication module.

10. The welding power system of claim 9 , wherein the communications module includes a wireless communication module via which the message is communicated, the wireless communications module configured to communicate via a cellular communications network.

11. The welding power system of claim 1 , including a wireless communications module in communication with the controller and at least one wireless transmitter electrically connected to the one or more oxygen sensors.

12. The welding power system of claim 1 , including a wireless communication module in communication with the controller and at least one flow meter.

13. A welding power system comprising:
a data input device;
a flow meter signal input;
an oxygen sensor arranged within a volume of an interior of one more pieces to be welded, the oxygen sensor configured to:
measure an oxygen level while arranged within the volume;
generate electrical signals indicative of the oxygen level within the volume;
transmit the electrical signals out from the volume via a wired or wireless communication line; and

a purge gas flow regulator; and
an oxygen analyzer located outside the volume, the analyzer comprising an electrical connection and a controller, the controller configured to:
receive the electrical signals indicative of the oxygen level at the electrical connection via the wired or wireless communication line;
receive by way of the input device purge parameters defining or a value of a volume or within an interior of one or more pieces to be welded by way of the input device;
calculate a purge time based on the purge parameters and a predetermined purge gas flow rate, the purge time being a time period needed to replace an atmosphere within the volume with a purge gas at a predetermined flow rate of the purge gas;

generate a flow regulator control signal based on a flow meter signal and the oxygen level received from the oxygen sensor signal.

14. The welding power system of claim 13 , wherein the controller includes a communication module and the controller is logically configured to signal elapse of purge time by communicating an alert to the operator via the communications module.

15. The welding power system of claim 13 , including an audible alert device in communication with the controller, and the controller is logically configured to signal elapse of purge time by communicating an alert to the operator via the audible alert device.

16. The welding power system of claim 13 , including a visual alert device in communication with the controller, and the controller is logically configured to signal end of purge time by communicating an alert to the operator via the visual alert device.

17. The welding power system of claim 13 , including a communications module in communication with the controller, and the controller is logically configured to communicate a message via the communication module.

18. The welding power system of claim 13 , wherein the communications module includes a wireless communication module via which the message is communicated.

19. The welding power system of claim 13 , wherein the wireless communications module is configured to communicate via a cellular communications network.

20. The welding power system of claim 13 , wherein the wireless communications module is configured to communicate via a wireless communications network.

21. The welding power system of claim 13 , including a wireless communications module in communication with the controller and at least one wireless transmitter electrically connected to the one or more oxygen sensor.

22. The welding power system of claim 13 , further comprising a memory in communication with the controller, wherein the controller is logically configured to store in the memory purge gas flow measurements, oxygen level measurements, the purge gas parameters, the purge time, or time stamp data associated with any of the foregoing, or any combination of the foregoing.

23. A welding power system, comprising:
a housing;
inlet and outlet connections for purge gas located on the housing;
at least an electrical input to receive an electrical signal from for an oxygen sensor located within a volume of an interior of

Assignees

• Illinois Tool Works

Inventors

• Kadlec Mark Steven

Classifications

• B23K9/326

  Purge gas rings, i.e. devices for supplying or evacuating shielding gas inside of hollow or tubular articles, e.g. pipes, vessels · CPC title

• B23K10/00

  Welding or cutting by means of a plasma · CPC title

• B23K9/095

  Monitoring or automatic control of welding parameters · CPC title

• B23K9/16 Primary

  making use of shielding gas · CPC title

• B23K26/21

  by welding · CPC title