| 摘要 |
A fluid surge damper for damping fluid pressure surges in a fluid system. The damper including a housing and elastomeric element located therein which is protected from the deleterious effects of the fluid by a flexible membrane. The flexible membrane contains a subatmospheric pressure which draws the flexible membrane against the elastomeric element resulting in a partial compression of the elastomeric element. If the continuity of the flexible membrane is destroyed, the subatmospheric condition will equalize with ambient pressure conditions and the elastomeric element will expand to its original shape thereby providing a readily visual indication of a faulty unit. In addition, the flexible membrane may be sealed while containing a partial volume of liquid and the elastomeric material used may be liquid permeable, therein acting in combination to limit the physical deformation of the elastomeric material by defining a minimum volume to which the elastomeric material may be compressed. This feature provides a fluid surge damper which will not be damaged by fluid surges which might otherwise deform the elastomeric material beyond its elastic limit.
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