RU2004101692A - METHOD FOR CHECKING THE SEAL OF CLOSED VOLUMES - Google Patents

Claims (1)

A method for checking the tightness of closed volumes comprising forming a scanned closed volume V given gas pressure measurement the pressure at the beginning of P _n and the end F _{to the} set period τ of time _k, characterized in that simultaneously with the initial pressure determining P _and measured the initial temperature T _n gas in the closed space, are periodically determined by the time step Δ τ, at the end of the set period of time τ _to, simultaneously with gas pressure P _{to the} determination, _{to the} temperature T, and then determine the total mass vTe Ku gas G _k, and in case that the relation G _k <G _bottom, consider checked sealed closed volume, wherein G _k, τ _k, and Δ τ satisfy the relations: G _k = V / B · (P _n / T _n -P _k / T _k ) / τ _k , τ _k = k · Δ τ for k = 1, 2, ..., Δ τ = 2V · (Δ P · | T _n | + Δ T · | P _n |) / (B · G _ass · T _n ² ), where G _ass - a given degree of tightness of a closed volume V; In - specific gas constant; Δ P, Δ T are the ultimate absolute errors in determining the pressure and temperature, respectively.