METHOD FOR CALIBRATION OF BALL (SPHERICAL) RESERVOIR FOR DETECTION OF CAPACITY COMPLYING WITH HEIGHT OF ITS FILLING Russian patent published in 2012 - IPC G01F17/00 

FIELD: measurement equipment.

SUBSTANCE: invention relates to measurement equipment and may be used for detection of capacity and calibration of ball (spherical) reservoirs. The method for calibration of a ball (spherical) reservoir to detect capacity complying with height of its filling is carried out by means of detection of areas of horizontal sections of a ball (spherical) reservoir. Using calculation methods, the ball (spherical) reservoir capacity is identified, for this purpose scanning is carried out with the help of a ground laser scanner with linear discrecity of scanning pitch within 2 - 5 mm, at least from two scanner stations and in accordance with operating documents (ED) for a device, scans are combined. At the same time quality of combination of the produced data is controlled by completion of one of the following conditions: mean square error of a unit of GLS combination weight shall not exceed ±3 mm, - deviation of coordinates of special marks location shall not exceed ±5 mm, - mean square error for detection of elements of external orientation for linear values shall not exceed ±2 mm, and for angular values -±15". A 3D model is built for an inner space of a ball (spherical) reservoir, perpendicularly to a vertical line, using software RapidForm, a 3D model of the reservoir is cut by horizontal planes with the distance of 1 cm between them into g number of layers. The area of sections of layers in the 3D model of the reservoir S_j, m², is calculated, as well as the area of sections of inner structures of the reservoir S_j ^const, m². The volume of the ball layer is calculated, complying with a one-centimetre level of reservoir filling, using the formulas.

EFFECT: higher validity and accuracy of calibration of a ball (spherical) reservoir to detect capacity complying with height of its filling.

1 dwg