Seal for piston rod of stirling engine
阅读：274发布：2021-07-03
专利汇可以提供Seal for piston rod of stirling engine专利检索，专利查询，专利分析的服务。并且A Stirling cycle hot gas engine is provided with a seal about a moving piston rod for limiting leakage of gas from a high pressure working chamber into a low pressure crank casing. The seal is a conically shaped plastic ring urged against the piston rod by mating spring loaded metal wedge rings.，下面是Seal for piston rod of stirling engine专利的具体信息内容。
1. A Stirling cycle hot gas engine having a sealing device about a movable piston rod in a region extending between a first working gas filled chamber at high cyclic gas pressure and a second crankcase chamber with oil therein to lubricate said piston rod and having gas therein at lower pressure, said sealing device comprising in combination, a resilient synthetic plastic ring about said piston rod in said region conically tapered away from said rod on both ends, a pair of complementary metal ring wedges tapered toward said rod and mating with the ring on opposite sides thereof to urge said ring toward said rod thereby to engage it at a position lubricated by said oil, spring means loading the rings in the axial direction of the rod, and a gas flow return conduit including a one way valve connecting said region to said high pressure chamber to provide a flow path for gases toward said high pressure chamber and tending to maintain in said region a gas pressure at the lower cyclic pressure.
2. A device as defined in claim 1 including oil separating means in said return conduit.
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