Welded dual chamber impingement tube

Abstract

A tube for being installed into a guide vane of a turbine is provided herein. The tube includes a tube wall for forming a fluid channel and a dividing wall which is arranged inside the fluid channel. The dividing wall includes a first edge and a second edge which is spaced apart from the first edge. The first edge is fixed to a first surface section of the tube wall. The dividing wall is formed in such a way that the second edge resiliently abuts in a detachable manner against a second surface section of the tube wall such that the dividing wall divides the fluid channel in a first channel (I) and a second channel (II).

1 . A tube for being installed into a guide vane of a turbine, the tube comprising:
 a tube wall for forming a fluid channel, and a dividing wall which is arranged inside the fluid channel,   wherein the dividing wall comprises a first edge and a second edge which is spaced apart from the first edge,   wherein the first edge is fixed to a first surface section of the tube wall, and wherein the dividing wall is formed in such a way that the second edge resiliently abuts in a detachable manner against a second surface section of the tube wall such that the dividing wall divides the fluid channel in a first channel (I) and a second channel (II).   
     
     
         2 . The tube according to  claim 1 , wherein the first edge is welded to the first surface section of the tube wall. 
     
     
         3 . The tube according to  claim 1 , wherein the dividing wall is arranged inside the fluid channel in such a way that, if a first fluid pressure (p 1 ) in the first channel (I) is higher than a second fluid pressure (p 2 ) in the second channel (II), the second edge is pressed against the tube wall by the first fluid pressure (p 1 ). 
     
     
         4 . The tube according  claim 1 , wherein the first surface section has a first normal (n 1 ), wherein the dividing wall comprises a further first surface section which has a further first normal (fn 1 ) and which comprises the first edge,
 wherein an angle (α) between the first normal (n 1 ) of the first surface section and the further first normal (fn 1 ) of the further first surface section differs from 90°.   
     
     
         5 . The tube according to  claim 1 , wherein the second surface section has a second normal (n 2 ), wherein the dividing wall comprises a further second surface section which as a further second normal (fn 2 ) and which comprises the second edge, wherein the dividing wall is formed such that a further angle (β) between the second normal (n 2 ) of the second surface section and the further second normal (fn 2 ) of the further second surface section differs from 90°. 
     
     
         6 . The tube according to  claim 1 , wherein a centre axis runs between a first tube end and a second tube end, wherein the tube is divided along a dividing direction into a first tube part and a second tube part, and wherein the dividing direction comprises at least a component which is parallel to the centre axis. 
     
     
         7 . The tube according to  claim 6 , wherein the first tube part and the second tube part are connected to each other by means of a welding connection. 
     
     
         8 . The tube according to  claim 6 , wherein the first edge of the diving wall is fixed to the first tube part, wherein the first tube part comprises the first surface section, and wherein the second tube part comprises the second surface section. 
     
     
         9 . The tube according to  claim 1 , wherein the tube wall comprises holes for guiding a fluid between the fluid channel and the environment of the tube. 
     
     
         10 . A guide vane device for a turbine, the guide vane device comprising:
 a guide vane which comprises an inner volume, and a tube according to  claim 1 , wherein the tube is arranged inside the inner volume.   
     
     
         11 . A method of manufacturing a tube for a guide vane for a turbine, the method comprising:
 providing a tube which comprises a tube wall for forming a fluid channel,   fixing a first edge of a dividing wall to a first surface section of the tube wall, and   resiliently abutting in a detachable manner a second edge of the dividing wall, which second edge is spaced from the first edge, against the tube wall such that the dividing wall divides the fluid channel into a first channel (I) and a second channel (II).   
     
     
         12 . The method according to  claim 11 ,
 wherein the tube has a centre axis which runs between a first tube end and a second tube end, and   wherein the tube is divided along a dividing direction into a first tube part and a second tube part, wherein the dividing direction comprises at least a component which is parallel to the centre axis,   wherein the fixing comprises fixing the first edge to the first tube part, wherein the first tube part is fixed to the second tube part after the first edge is fixed to the first tube part, and   wherein the abutting comprises resiliently abutting in a detachable manner the second edge against the second tube part.