Degassing tube and ejection cone for a turbine engine, as well as tool for assembly thereof

An ejection cone for a turbine engine of an aircraft, the ejection cone having an extended form and comprising first fixing means to an element of the turbine engine at a first longitudinal end, the ejection cone also comprising at an inner periphery of the ejection cone and at a distance from said first longitudinal end second centering means configured to co-operate with first centering means of a degassing tube of the turbine engine designed to traverse said ejection cone, the ejection cone comprising at least one annular stiffener at the inner periphery, said second centering means being fixed in a detachable manner to said at least one annular stiffener, wherein said second centering means comprise an annular row of tabs configured to be supported radially on said first centering means,

• wherein said tabs are carried by a first disc which is fixed to a second disc, a third disc being inserted and squeezed between said first and second discs and being fixed to said at least one annular stiffener, said first, second and third discs extending around a longitudinal axis of the cone.