发明名称 |
Back-up rings for high pressure seals, packing assembly, and pumps incorporating same |
摘要 |
An improved support for a seal is provided in the form of a back-up ring that reduces or eliminates the gaps between a pump plunger and a high pressure cylinder of a pump. The support includes a back-up ring having opposed first and second faces with a wall thickness disposed between the faces. The back-up ring includes a frustro-conical concave surface on the first face and a frustro-conical convex surface on the second face. Also provided are a packing assembly including at least one back-up ring and a reciprocating pump incorporating the at least one back-up ring. |
申请公布号 |
SE0203660(D0) |
申请公布日期 |
2002.12.11 |
申请号 |
SE20020003660 |
申请日期 |
2002.12.11 |
申请人 |
INGERSOLL-RAND COMPANY |
发明人 |
JEFFERY D STEPHENS |
分类号 |
F04B53/16;F16J15/16;(IPC1-7):F16J/ |
主分类号 |
F04B53/16 |
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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