Patent · US Expired

Method of inspecting the operation of a valve and mechanical test bench for performing the method

US4566310A · kind A · utility

20Cited by

5References

1Claims

0Family size

Assignee

Framatome & Cie. · FR

Inventors

Serge Cohen · Meudon, FR
Gilbert H. K. Nguyen · Paris, FR

Key dates

Filing date	Mar 10, 1983
Grant date	Jan 28, 1986
Priority date	—
Expiry date	Mar 10, 2003

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16K37/0083
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Method and a device for inspecting the operation of a valve. The valve (1, 11) is placed on a test bench (2, 3) capable of applying an opening and closing force to the valve, a representative graph of the movement of the valve as a function of the force applied is plotted, the coordinates of which are measured continuously, and the graph of the test is compared with a reference graph (C.sub.1) in order to detect operating defects according to the positions of the valve. The invention is applicable to the inspection of valves for passing fluids, more specifically in the nuclear industry.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.