22-12-2022 дата публикации
Номер: US20220404183A1
Принадлежит:
A fluid flow rate sensor, which may also be the basis of a valve for a fire suppression system, uses a sensing arm to convey motion of an obturation body or a valve closing member to a sensor system which evaluates the motion and generates a calibrated measure of the flow rate and/or an alarm signal in response if warranted. The obturation body and the valve closing member are capable of both rotation and translational motion, both of which are sensed using the sensing arm. The sensor system is isolated from the fluid within the valve. 1. A flow rate sensor , said flow rate sensor comprising:a housing having an inlet and an outlet, said housing defining a flow path between said inlet and said outlet;a shaft rotatably mounted within said housing;an obturation body positioned within said housing between said inlet and said outlet, said obturation body being mounted on said shaft and movable relatively thereto and relatively to said housing in response to fluid flow between said inlet and said outlet;a sensing arm having a first end fixedly mounted on said shaft and a second end engaging said obturation body;a sensor system adapted to sense rotation of said shaft relatively to said housing.2. The flow rate sensor according to claim 1 , wherein said obturation body comprises a disk oriented transversely to said flow path.3. The flow rate sensor according to claim 2 , wherein said obturation body further comprises at least one lug extending between said disk and said shaft claim 2 , said lug defining a hole receiving said shaft.4. The flow rage sensor according to claim 3 , wherein said hole is sized to permit rotational and translational motion of said disk relatively to said shaft.5. The flow rate sensor according to claim 2 , further comprising a seat surrounding said inlet claim 2 , said obturation body being engageable with said seat.6. The flow rate sensor according to claim 5 , further comprising a spring acting between said obturation body and said housing for ...
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