发明名称 |
SEAL ASSEMBLY FOR A VALVE STEM |
摘要 |
A seal assembly (1) for a valve stem (104) comprises an external seal (2) placed on a valve stem (104) facing an external environment (E); an internal seal (3) placed on the valve stem (104) facing a process environment (P); the external (2) and internal seals (3) define a chamber (4) for the containment of barrier fluid; the chamber (4) has an inlet (5) configured to be placed into fluid communication with a source (S) of barrier fluid; a detector (6) of the amount of barrier fluid; a pressurizer device (7) for providing the chamber (4) with a positive pressure with respect to the process environment (E); the pressurizer device (7) is configured to be installed coaxially with the valve stem (104). |
申请公布号 |
WO2016107702(A1) |
申请公布日期 |
2016.07.07 |
申请号 |
WO2015EP77520 |
申请日期 |
2015.11.24 |
申请人 |
NUOVO PIGNONE SRL |
发明人 |
BERGAMINI, LORENZO;CAPPIELLO, TOMMASO;PIETANZA, VINCENZO |
分类号 |
F16J15/00;F16J15/18 |
主分类号 |
F16J15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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