Pump totalizer system
US6203280A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 1997 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Dec 2, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03F5/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for totalizing the volume of liquid pumped to or from a vessel by a set of pumps. The method comprises the following steps: Calculating a running time for each of the pumps. Determining a first rate of change of volume when each of the pumps is turned on and a second rate of change a predetermined period after each of the pumps is turned on. Determining a draw down rate for each of the pumps and calculating the volume pumped by each pump based on the running time and draw down rate. Summing the volume pumped by each of the pumps to give a total volume pumped for the vessel over the operating time for the pumps. The totalizing method is incorporated with a control system for controlling the pumping of liquid to or from a vessel using one or more pumps. The control system comprises a level sensor, an actuator for each of the pumps, and a controller. The controller is programmed to issue control signals to the actuators and execute process steps for totalizing the volume of liquid pumped in the vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.