EP 0632866 A1 19950111 - PROCESS FOR MEASURING THE FLOW RATE OF THICK MATTER PUMPS.
Title (en)
PROCESS FOR MEASURING THE FLOW RATE OF THICK MATTER PUMPS.
Title (de)
DICKSTOFFPUMPEN-DURCHFLUSSMESSVERFAHREN.
Title (fr)
METHODE DE MESURE DU DEBIT DE POMPES A LIQUIDES EPAIS.
Publication
Application
Priority
- DE 4206576 A 19920302
- EP 9300252 W 19930204
Abstract (en)
[origin: WO9318301A1] A process and device are disclosed for determining by a measurement technique the flow rate of a substance conveyed by means of a thick matter piston pump (1) through a delivery pipe (22). The thought at the basis of the invention is that the filling level of the delivery cylinder, which is required for accurately determining volumetric flow, may be inferred from the variations of the pressure in the delivery pipe. Feeding pressure in the delivery pipe (22) is thus continuously or periodically measured at predetermined time intervals by means of a pressure sensor (54). The interval between successive pressure strokes, used to determined the number or frequency of strokes, as well as the filling level of the delivery cylinder, used to determine the actual delivery volume per pressure stroke, are both derived from the time-dependent amplitude characteristic of the measured delivery pressure.
IPC 1-7
IPC 8 full level
F04B 9/117 (2006.01); F04B 15/02 (2006.01); F04B 49/08 (2006.01); G01F 3/16 (2006.01); G01F 11/02 (2006.01)
CPC (source: EP US)
F04B 9/1178 (2013.01 - EP US); F04B 15/02 (2013.01 - EP US); F04B 49/08 (2013.01 - EP US); G01F 3/16 (2013.01 - EP US); G01F 11/029 (2013.01 - EP US); F04B 2205/05 (2013.01 - EP US)
Citation (search report)
See references of WO 9318301A1
Designated contracting state (EPC)
AT DE FR GB NL
DOCDB simple family (publication)
WO 9318301 A1 19930916; CA 2130437 A1 19930903; DE 4206576 A1 19930909; DE 4206576 B4 20050804; EP 0632866 A1 19950111; US 5578752 A 19961126
DOCDB simple family (application)
EP 9300252 W 19930204; CA 2130437 A 19930204; DE 4206576 A 19920302; EP 93918759 A 19930204; US 29093194 A 19940822