EP 0857153 A1 19980812 - METHOD FOR AUTOMATICALLY DETECTING STABILITY LIMIT OPERATION OF A BULK PRODUCT PNEUMATIC CONVEYOR INSTALLATION OPERATING IN DENSE PHASE
Title (en)
METHOD FOR AUTOMATICALLY DETECTING STABILITY LIMIT OPERATION OF A BULK PRODUCT PNEUMATIC CONVEYOR INSTALLATION OPERATING IN DENSE PHASE
Title (de)
VERFAHREN ZUM AUTOMATISCHEN ERFASSEN DES BEGRENZTEN STABILI TÄTSBETRIEBS EINER IN DICHTER PHASE ARBEITENDEN PNEUMATISCHEN FÖRDERANLAGE FÜR SCHÜTTGUT
Title (fr)
PROCEDE DE DETECTION AUTOMATIQUE D'UN FONCTIONNEMENT EN LIMITE DE STABILITE D'UNE INSTALLATION DE TRANSPORT PNEUMATIQUE D'UN PRODUIT EN VRAC EN PHASE DENSE
Publication
Application
Priority
- FR 9700924 W 19970527
- FR 9606774 A 19960528
Abstract (en)
[origin: WO9745351A1] The method enables the automatic detection of stability limit operation of a bulk product pneumatic conveyor installation operating in dense phase, in which the conveyor gas and the bulk product are separately introduced into a lock (3) which communicates at its outlet with a duct (4) for bulk product pneumatic transport. It consists in measuring the pressure (Pe), called lock pressure, which is exerted by the conveyor gas in the proximity of the zone (3a) where the bulk product is introduced into the conveying duct (4), and in detecting an instability of the measured lock pressure (Pe), over a predetermined duration (t), by means of a preset stability criterion. Specifically, the stability criterion consists of producing at least one fuzzy cut-off of the measured pressure (Pe) values, based on a predefined membership function, sampling period, and interval, and computing a stability coefficient based on this fuzzy cut-off.
IPC 1-7
IPC 8 full level
B65G 53/06 (2006.01); B65G 53/66 (2006.01)
CPC (source: EP US)
B65G 53/66 (2013.01 - EP US)
Citation (search report)
See references of WO 9745351A1
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
WO 9745351 A1 19971204; CA 2228007 A1 19971204; EP 0857153 A1 19980812; FR 2749287 A1 19971205; FR 2749287 B1 19980821; JP 2000501368 A 20000208; KR 19990035930 A 19990525; US 6062774 A 20000516
DOCDB simple family (application)
FR 9700924 W 19970527; CA 2228007 A 19970527; EP 97925135 A 19970527; FR 9606774 A 19960528; JP 54174097 A 19970527; KR 19980700591 A 19980126; US 7298 A 19980122