FIELD: physics.
SUBSTANCE: in process of tightness control the item is placed in tight testing chamber, item cavities are filled with control fluid, item is maintained to accumulate penetrating liquid vapors in chamber, and liquid leak is detected and measured by means of control liquid vapors content registration in volume of testing chamber. According to invention, after filling of cavity with control liquid its temperature and pressure are increased up to values that bring the liquid into supercritical condition. Practical application of method provides for highest effect in control of systems that are operated in mode of high temperatures and pressures of filling liquids.
EFFECT: increased sensitivity, quality and reliability of tightness control by liquid medium pressure.
1 dwg, 1 tbl
| Title | Year | Author | Number |
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SU1717981A2 |
