High-pressure press

1. A method for pressure-related monitoring of a pressing operation in a high-pressure press, which includes a pressure vessel and a force-absorbing press frame surrounding the pressure vessel, the method comprising:

detecting a change in length of a first column of the press frame caused by pressure inside the pressure vessel; and

interrupting a pressing operation and releasing the pressure from the pressure vessel when the change in length of the first column has reached a predetermined value.

2. The method as claimed in claim 1 , further comprising determining the pressure in the pressure vessel based on the detected change in length.

3. The method as claimed in claim 1 , wherein the step of detecting is carried out on an outside of the press frame and on a side of the press frame facing a direction other than a side facing the pressure vessel.

4. The method as claimed in claim 1 , wherein the detecting step comprises continuously measuring changes in the length of the first column.

5. The method as claimed in claim 1 , further comprising:

detecting changes in length of a second column provided in the press frame; and

comparing changes in length of the second column with changes in length of the first column for detecting asymmetrical deformation of the high-pressure press.

6. The method as claimed in claim 5 , wherein measuring points for detecting the change in length of the first column and the second column are located diagonally from each other relative to a symmetry axis of the high-pressure press, the symmetry axis being perpendicular to extension of the columns.

7. A method, comprising:

operating a high-pressure press having a pressure vessel and a force-absorbing press frame; and

detecting a change in length of at least one column comprised in the press frame, the change in length depending on a pressure inside the pressure vessel.

8. The method as claimed in claim 7 , wherein a rod-shaped member is arranged substantially parallel to and adjacent to said column for detecting the change in length of the column relative to the rod-shaped member.

9. A method, comprising:

comparing lengths of at least two rod-shaped members having substantially fixed lengths with respective column sections of a force-absorbing press frame having lengths that vary according to pressure forces within the press frame, for detecting an asymmetrical load applied to a pressure vessel surrounded by the force-absorbing press frame, the rod-shaped members being arranged substantially parallel to and adjacent to respective ones of two columns, each column provided in the press frame.

10. The method of claim 9 , wherein said two rod-shaped members are arranged adjacent to one column each in such a manner that the rod-shaped members are arranged diagonally relative to a symmetry axis of a high-pressure press, the symmetry axis being perpendicular to an extension of the columns.

11. A method, comprising:

positioning a pressure vessel within a force-absorbing press frame;

pressurizing the pressure vessel; and

monitoring a pressure level within the pressure vessel by detecting a change in a dimension of the force-absorbing press frame resulting from the pressurizing step.

12. The method of claim 11 , wherein the monitoring step comprises detecting a threshold pressure level within the pressure vessel by detecting a change in the dimension of the force-absorbing press frame of a preselected value.

13. The method of claim 11 , wherein the monitoring step comprises measuring a level of pressure within the pressure vessel by measuring a degree of change in the dimension of the force-absorbing press frame.

14. The method of claim 11 , wherein the force-absorbing press frame includes a column and wherein the dimension is a length of the column.