Pre-evaporation tube for turbine engine combustion chamber

The invention relates to a pre-evaporation tube (4) for a combustion chamber (1) of a turbine engine, the pre-evaporation tube comprising: a body (40) defining a first inner duct (41) in which an injector (3) is intended to be mounted, the body comprising a first end (40a) to be attached to a wall (13) of the chamber; at least two end pieces (42) arranged at a second end (40b) of the body (40) and defining a second inner conduit (43), the end pieces each comprising a first portion (44) and a second portion (45), the second portions (45) each comprising two coaxial cylindrical walls, respectively an inner (452) and an outer (454) coaxial cylindrical wall, which define an annular cavity (450) therebetween, and the inner wall (452) defines an inner passage and includes first openings (50) for fluid communication between the passage and the annular cavity (450). 本发明涉及用于涡轮发动机的燃烧室(1)的预蒸发管子(4)，预蒸发管子包括：主体(40)，该主体限定第一内部导管(41)，喷射器(3)旨在安装在该第一内部导管中，该主体包括待附接到室的壁(13)上的第一端部(40a)；至少两个端件(42)，该端件布置在主体(40)的第二端部(40b)处并且限定第二内部导管(