Burner supply tube with fuel channel

A burner arrangement having a burner and a tube arrangement, which is attached to the burner at an upstream side of the burner and which comprises:

• an outer protection tube;
• a first inner fluid supply tube;
• and
• a burner supply tube arranged between the outer protection tube and the first inner fluid supply tube, wherein the burner supply tube comprises:
• a tube wall extending from an upstream tube end to a downstream tube end along a tube length and further having a tube diameter and a wall thickness, wherein the tube length is at least 2 times and at most 20 times the tube diameter and the wall thickness is at least 0.01 times and at most 0.2 times the tube diameter, and the tube wall comprising at least one integrated fuel channel extending from a fuel input at the upstream tube end to a fuel output at the downstream tube end, the at least one integrated fuel channel having an equivalent diameter of at least 0.3 times and at most 3 times the wall thickness,
• wherein the at least one integrated fuel channel is helical along a majority of the tube length, to form a helical portion of the at least one integrated fuel channel, with a gradient of at least 0.5 times and at most 5 times the tube diameter,
• wherein a thickening of the tube wall due to the at least one integrated fuel channel is arranged on an inner side and/or on an outer side of the tube wall.