| 摘要 |
PCT No. PCT/EP88/00343 Sec. 371 Date Oct. 23, 1989 Sec. 102(e) Date Oct. 23, 1989 PCT Filed Apr. 22, 1988 PCT Pub. No. WO88/08936 PCT Pub. Date Nov. 17, 1988.Arrangement for damping linear movements intended for use on a safety valve. An arrangement for damping linear movements of the valve spindle (10) of a safety valve of small amplitude and high frequency comprises two counter-rotatable damping parts (18, 36) with intermeshing wall (22, 24, 32) which delimit narrow working gaps (44, 46) containing a high-viscosity silicone grease. The linear intake movement is converted by a threaded drive (12, 40) into a rotary movement during which the silicone grease (47) in the working gaps (44, 46) is subjected to shear forces and eliminates the unwanted energy by virtue of its internal friction.
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