Hollow tube filling module and method of filling hollow tube using the same

Abstract

A hollow tube filling module is disclosed. The hollow tube filling module is provided in plural, and the plurality of hollow tube filling modules are inserted into a hollow tube and are filled in the hollow tube. The hollow tube filling module includes a filling tube inserted into the hollow tube, the filling tube including a hollow inside, a first filling unit disposed along an inner wall of the filling tube, the first filling unit including a hollow inside, and a second filling unit disposed in the hollow of the first filling unit.

1 . A hollow tube filling module that is provided in plural, the plurality of hollow tube filling modules being inserted into a hollow tube and filled in the hollow tube, the hollow tube filling module comprising:
 a filling tube inserted into the hollow tube, the filling tube including a hollow inside;   a first filling unit disposed along an inner wall of the filling tube, the first filling unit including a hollow inside; and   a second filling unit disposed in the hollow of the first filling unit.   
     
     
         2 . The hollow tube filling module of  claim 1 , wherein the filling tube and the hollow tube are formed of the same metal material. 
     
     
         3 . The hollow tube filling module of  claim 1 , wherein the hollow tube includes a metal, and
 wherein the filling tube includes a metal that is able to be combined with the hollow tube.   
     
     
         4 . The hollow tube filling module of  claim 1 , wherein the first filling unit is formed in the form of a powder or particles. 
     
     
         5 . The hollow tube filling module of  claim 4 , wherein the second filling unit is formed in the form of a powder or particles. 
     
     
         6 . The hollow tube filling module of  claim 5 , wherein the first filling unit includes a water-soluble material, and
 wherein the second filling unit includes an inorganic material or a metal material.   
     
     
         7 . The hollow tube filling module of  claim 6 , wherein the first filling unit has a porosity of 3% or more, and
 wherein the second filling unit has a porosity of 5% or more and 50% or less.   
     
     
         8 . The hollow tube filling module of  claim 1 , wherein a cross section of the hollow tube has a circular shape or a polygonal shape. 
     
     
         9 . A method (S 100 ) of filling a hollow tube using a hollow tube filling module, the method comprising:
 a step (S 110 ) of preparing the hollow tube;   a step (S 120 ) of comparing a hollow ratio in the hollow tube with a reference value;   a step (S 130 ) of inserting the filling module into the hollow tube when the hollow ratio is greater than or equal to the reference value; and   a step (S 140 ) of pressurizing an outer wall of the hollow tube when the hollow ratio is less than the reference value.   
     
     
         10 . The method (S 100 ) of  claim 9 , wherein the at least two filling modules are inserted into the hollow tube. 
     
     
         11 . The method (S 100 ) of  claim 10 , wherein a gap is formed between two adjacent filling modules among the plurality of filling modules. 
     
     
         12 . The method (S 100 ) of  claim 10 , wherein the two or more filling modules are physically coupled to each other before the two or more filling modules are inserted into the hollow tube.