LIQUID FLOW RELAY Russian patent published in 2005 - IPC

FIELD: automatic signaling systems.

SUBSTANCE: liquid flow relay has nonmetallic working chamber with supply and discharge branch pipes with sensitive element mounted in nonmetallic guide coaxially relative to supply branch pipe; said sensitive element is made in form of cylindrical float with metal end face. Working chamber is made in form of truncated cone engageable with cylinder and separated from additional chamber by means of partition; sensitive element position indicator is mounted in additional chamber. Sensitive element is made in form of inductive sensor. At least one hole is made in guide near partition. Flow sections of branch pipes are similar. Sensitive element may be all-metal; it may be made from different metals; spring may be mounted between partition and metal end face of float.

EFFECT: simplified construction; enhanced operational reliability; minimum losses of pressure.

3 cl, 2 dwg