Title:
INSPECTION METHOD OF PRESSURE VESSEL
Document Type and Number:
Japanese Patent JP3444307
Kind Code:
B2
Abstract:
PURPOSE: To comprehand the extent of sealed gas pressure more accurately than heratofore by differentiating twice the pressure of the vicinity of a bend that is due to balance with sealed gas pressure at the pressure ascent line or the pressure descent line of inspection medium pressure, specifying a bend- turning point, and comprehending sealed gas pressure on the basis of this bend- turning point.
CONSTITUTION: This is a method to inspect the extent of sealed gas pressure P1 sealed in a gas chamber 22 in the case of a pressure vessel 21 in whose vessel main body 23 inside a diaphragm 24 having flexibility is provided and the gas chamber 22 is provided. Inspection medium pressure P2 is supplied to a space 26 on the opposite side to the gas chamber 22 with the diaphragm 24 interposed, and the sealed gas pressure P1 and the inspection medium pressure P2 are mutually balanced, and pulse corrugation is obtained by differentiating twice the pressure of the vicinity of a bend that is due to the balance at the pressure ascent line or the pressure descent line of the inspection medium pressure P2, and a time point when the pulse corrugation is settled is made to be a bend-turning point, and the comprehension of the sealed gas pressure is carried out on the basis of pressure at the bend-turning point.
Inventors:
Tsutomu Kondo
Application Number:
JP30600193A
Publication Date:
September 08, 2003
Filing Date:
November 12, 1993
Export Citation:
Assignee:
NOK Co., Ltd.
International Classes:
F15B1/08; (IPC1-7): F15B1/08
Domestic Patent References:
| JP454301A | ||||
| JP1227936A | ||||
| JP1217232A | ||||
| JP5322685A | ||||
| JP6454325A | ||||
| JP6473232A |
Attorney, Agent or Firm:
Youichi Nomoto