Modular pump cylinder-head having integral over-pressure protection
US5362215A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 1993 |
| Grant date | Nov 8, 1994 |
| Priority date | — |
| Expiry date | May 10, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7932
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A modular fluid end assembly, and associated method of providing same, for a reciprocating pump having a cylinder housing secured to a crankcase by tie bolts. The fluid end is tolerant to having cylinder-head bolts improperly torqued while also providing an over pressure relief feature. The modular fluid end includes a cylinder-head having two seal landings, one common to a cylinder base joint surface and one common to an end joint surface. The base joint seal landing is smaller than the end joint seal landing. An end plate and a co-acting valve cover is provided. The valve cover includes a seal extending thereabout and is accommodated by the seal landing of the end joint. A second seal is accommodated by the base joint seal landing. A plurality of cylinder-head bolts having predetermined yield strengths, are located in proximity to the periphery of the end plate to force the end plate and the valve cover against the cylinder-head. Upon an over-pressure condition, the bolts yield thereby allowing the end plate to move away from the cylinder-head and the larger end joint seal ruptures prior to the base joint seal, thereby allowing the fluid or slurry being pumped to flow between the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.