JET SENSOR OF CONSUMPTION Russian patent published in 2005 - IPC

FIELD: the jet sensor refers to measuring arrangements of consumption of gases and liquids.

SUBSTANCE: the sensor has a restriction connected with an input and a primary frequency jet transformer. The transformer has jet switches connected successively. The outputs of the last switch are connected with the inputs of the first switch according to the type of negative feedback. The feeding muzzles of the switches are connected with the input via a channel. In the flowing part of the restriction there are two cylindrical tubes successively and coaxially installed. A stream-lined body is coaxially installed in this two tubes. The external diameter of the stream-lined body and the inner diameter of the tube form a throat. Behind the throat between the tubes an end crank is formed. It is equal to 0.5±0.2 of hydraulic diameter of the feeding muzzles of the switches. The drainage hollows of the switches are connected with the throat of the flowing part of the restriction. The radius of the hydraulic diameter of the feeding muzzles of the switches is up to 0.2±0.1 more than the radius of the tube.

EFFECT: increases accuracy of measuring consumption of gases and liquids.

2 dwg