| 摘要 |
FIELD: transport, distribution.SUBSTANCE: invention relates to high-pressure vessels charging with compressed gases with gas leakage degree measurement. Hermetic tightness control system includes pneumatic unit containing high-pressure cylinder communicating with charging valve and with line for working gas delivery to consumer which line is equipped with sealing device; excess pressure helium source and high-pressure working gas source with helium and working gas delivery lines respectively made capable to communicate with charging valve of pneumatic unit, accumulating container for leakage from pneumatic unit made of thin-walled elastic material with possibility to accommodate pneumatic unit and provide with gap for unit passing and with gap sealing device, mass-spectrometric helium leak detector provided with sampling line with probe with Luer needle and vacuum pump communicating with sampling line through valve. Area of free surface of accumulating container after its gap sealing exceeds area of outer surface of pneumatic unit. The system also contains syringe of gauged volume with needle for air injection into accumulating container.EFFECT: simplification of pneumatic unit operation and higher reliability of keeping its operability during long-term exploitation.2 cl, 2 dwg |
