LIQUID FLOW SWITCH Russian patent published in 2022 - IPC G01P13/00 

FIELD: fire extinguishing equipment.

SUBSTANCE: claimed invention relates to fire extinguishing equipment used as part of automatic high-pressure fire extinguishing systems and, in particular, to a liquid flow indicator located on the fire extinguishing system pipeline. The signaling device contains a hollow cylindrical body, made with the possibility of partial installation in the pipeline. The body is fixed on said pipeline by means of a union nut. The sensor with the Hall element is placed in the sensor box mounted on the said body. A sensing element installed by means of a hinge with the possibility of rotation inside the said housing. The signaling device contains a return spring that provides a predetermined position of the sensing element in the absence of fluid flow in said pipeline. The sensitive element is made in the form of a rocker arm and a flexible element placed on one side of said rocker arm and oriented inside the pipeline, and a magnet placed on the side of the rocker arm opposite from the flexible element and oriented to the sensor with the Hall element.

EFFECT: ensuring the accuracy of the installation of the sensitive element of the liquid flow indicator in the pipeline perpendicular to the liquid flow, while ensuring the tightness of the structure at high pressures in the pipeline, namely over 12-15 MPa.

12 cl, 6 dwg