Pipe unit

Abstract

A pipe unit includes a pipe body, first and second flanges, and an adjusting structure. The first flange and the second flange are respectively disposed on opposite first and second ends of the pipe body. The adjusted structure is disposed between the first and second flanges and serves to adjust the length of the pipe unit.

1 . A pipe unit, comprising:
 a pipe body having a first end and a second end;   a first pipe flange disposed on the first end;   a second pipe flange disposed on the second end; and   an adjusting structure disposed between the first pipe flange and the second pipe flange, wherein the adjusting structure is for adjusting the length of the pipe unit.   
   
   
       2 . The pipe unit according to  claim 1 , wherein the pipe body is a bellow. 
   
   
       3 . The pipe unit according to  claim 2 , wherein the material of the pipe body includes a high-temperature and high-pressure resistant material. 
   
   
       4 . The pipe unit according to  claim 3 , wherein the material of the pipe body includes stainless steel. 
   
   
       5 . The pipe unit according to  claim 1 , wherein the adjusting structure comprises:
 a first shaft whose one end is connected to the first pipe flange;   a second shaft whose one end is connected to the second pipe flange; and   an adjusting portion rotatably connected the other end of the first shaft and the other end of the second shaft, wherein the first shaft and the second shaft are drawn closer or pushed apart when the adjusting portion is rotated.   
   
   
       6 . The pipe unit according to  claim 5 , wherein the adjusting structure comprises the two shaft units mutually separated at 180 degrees. 
   
   
       7 . The pipe unit according to  claim 5 , wherein the adjusting structure comprises the three shaft units mutually separated at 120 degrees. 
   
   
       8 . The pipe unit according to  claim 5 , wherein the first shaft is a first screw stem, the second shaft is a second screw stem whose direction of thread is opposite to the direction of thread of the first screw stem, and the adjusting portion is a nut mounted on the first screw stem and the second screw stem.