TRANSDUCER-RELAY OF PRESSURE DIFFERENCE FOR COOLING PLANTS Russian patent published in 2004 - IPC

FIELD: electrical engineering, protection of cooling plants against inadmissibly low pressure difference in liquid circulation pumps. SUBSTANCE: invention can also be used for protection of bearings of crankshaft and connecting rod while oil pressure difference in crankcase and across outlet of oil pump of cooling pressure-lubricated compressors reduces. Manometric system employed for realization of invention comprises two bellows leak-tight connected in series. Each bellows is permanently fixed with one base on enclosure of manometric system, their other bases are interjoined with the help of bushing coupled by means of tie-rods to rest acting of lever. Master unit which head of adjustment screw is brought outside of body acts on lever from opposite side. EFFECT: reduced labor input to assembly of transducer-relay, diminished dimensions and mass, raised consumer properties thanks to increased electric safety and decreased working hours needed for adjustment of transducer-relay on object. 1 dwg