Measuring device for monitoring the fueling of large ships
A measuring device and ship technology, applied in the direction of mass flow measuring device, for bulk cargo, direct mass flow meter, etc., can solve the problems of high absolute measurement error, small cost, small measurement inaccuracy, etc., to improve the overall accuracy , Improve the effect of measurement accuracy
Active Publication Date: 2020-02-04
SIEMENS AG
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Problems solved by technology
[0007] In view of the high volumes of the oil tanks and the correspondingly large quantities of liquid products received, the smallest measurement inaccuracies can already lead to high absolute measurement errors and correspondingly high overruns or lower costs for oil dosing
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[0022] The only shown figure shows, in a simplified schematic diagram, an exemplary embodiment of a measuring device according to the invention for monitoring the filling of liquid products 1 , such as heavy oil, for large ships. The measuring device is installed in the descending oil line 3 and has here two identical parallel lines 4, 5 for distributing the incoming liquid product 1 and collecting again the outgoing liquid product, the oil line receiving connection not shown here (Bunker Manifold Oil Manifold) leads to Oil Tank 2. In each pipeline 4, 5, Coriolis mass flowmeters 41, 51, pressure gauges 42, 52 and regulating valves 43, 53 are respectively arranged in sequence in the flow direction, and the regulating valves have operating mechanisms 44, 54 and position regulators 45, 55. Coriolis mass flow meters 41, 51, pressure gauges 42, 52 and position regulators 45, 55 are connected to a control and evaluation device 6 which has a display 61 and an input 62 (for example a...
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The invention relates to a measuring assembly for monitoring the bunkering of a large ship with a liquid product (1) comprising at least two parallel pipe lines (4, 5) arranged in the course of a bunker line (3) leading into a bunker tank (2) of the ship. In each of the pipe lines (4, 5), a Coriolis mass flowmeter (41, 51), a pressure gauge (42, 52), and a control valve (43, 53) having an actuating drive (44, 54) and a position controller (45, 55) are arranged one after the other in the flow direction. The mass flow rate and relevant measurement variables of the liquid product (1) derived from the mass flow rate are determined from the measured values provided by the Coriolis mass flowmeters (41, 51). During the bunkering, the control valves (43, 53) are individually set in accordance with the measured values provided by the Coriolis mass flowmeters (41, 51) and by the pressure gauges (42, 52) in such a way that the measured flow rate is greater than zero and less than a specified flow rate threshold value in only one of the parallel pipe lines (4, 5) and either is zero or reaches the flow rate threshold value in the other pipe lines (4, 5) and that the measured pressure does not fall below a specified pressure threshold value.
Description
technical field [0001] The invention relates to a measuring device for monitoring liquid products of the mineral oil dosing industry or the petroleum / chemical industry for large ships. Background technique [0002] Especially in the case of high-value liquid products, such as fuels or lubricants, there is a need to accurately measure the amount of liquid product received during refueling or to verify the supplier's measurements. Fill level measurement in oil tanks is not suitable for this, since the required conversion from the measured fill level via the volume of the oil tank to the mass of the liquid product is very imprecise and erroneous. In addition, the air contained in the received liquid is not taken into account at this time. [0003] For this reason, the mass flow of the liquid product is measured during the oil addition process by means of one or more parallel-connected Coriolis mass flow meters, wherein at least one curved channel through which the medium (here...
Claims
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IPC IPC(8): G01F1/84
CPCB63B25/08G01F1/84G01F15/10
Inventor 约尔格-安德烈·维费尔
Owner SIEMENS AG