Measuring devices installation at a high pressure - process line, as well as the tightness check method and for the degradation of the measurement device in such a measuring devices installation

摘要

The invention relates to a measuring devices installation on a medium under high pressure process line, which can be acted upon with a shut-off member between the measuring device and of the process line. According to the invention, the shut-off member of a ball valve (18), of a valve body as a ball housing (1) with a process line - connection (2) and a measuring devices - connection (3) comprises. Furthermore, a between a passing position (6) and a shut-off position rotatable ball (7) in the ball housing (1) is arranged, which allows a passing position (6) in the adjustable through bore (8) contains. Furthermore, two in each case in the direction of the process line - connection (2) and of the measuring devices - connection (3) lying ball seats (12, 13) is provided, which one each on the ball (7) sliding sleeve spring-loaded and sealed (14, 15) have. Furthermore, this sliding sleeve (14, 15) with one on each of the ball (7), which is present in the form of a ring seal packing (19, 20), as a result of which between the packings (19, 20) a relative to the process line - connection (2) and the measuring devices - connection (3) is not directly sealed off (25) is formed, wherein the ball housing (1) in the region of the abovementioned ball area (25) a relief - / emptying connection (26) with a connected operated relief - / bleed valve (27) comprises.