| 摘要 |
PURPOSE: A well supporting device is provided to prevent the twisting of a well due to welding of the well tank and to improve the dimension precision of the well. CONSTITUTION: A well supporting device comprises a supporting ring(100) and a support pillar(200). The supporting ring supports the well. The support pillar supports the supporting ring. The supporting ring is a form of the beam. The both ends of above beam are connected to a diameter control device(300). The base aperture is formed on the support pillar upward and downward. |
