| 摘要 |
A device for limiting the flow rate of a fluid through a conduit operates autonomously without any external energy source, and independently of the level of pressure upstream, by operating on an imposed upstream-downstream pressure difference. The flow limiter is capable of limiting the rate of flow of a fluid through a pipe, the flow rate of the fluid depending on the cross section for passage of the fluid in the pipe, and on the difference between the upstream and downstream pressures relative to the passage cross section, in the direction in which the fluid flows. The flow limiter includes means (12, 19) of regulating passage cross section (S), deformable means (13), rigidly connected to the regulating means (12, 19) and subjected, on one side, to upstream pressure (P1) and, on the other side, to downstream pressure (P2), and means (15, 16, 17, 18) capable of defining, for a predetermined difference between upstream and downstream pressures, a position of equilibrium for the regulating means (12, 19) and the deformable means (13). The flow limiter is easy to regulate and, because it contains only a small number of parts, it is characterized by high operational reliability, low mass, and relatively compact size.
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