SU1415059A1 - Method of determining capacity of cylindrical reservoirs - Google Patents

Abstract

The invention makes it possible to determine the capacity of cylindrical tanks. The aim of the invention: is to increase the measurement accuracy by decreasing the number of measured pairs of ramps needed to determine the tank capacity. Two theodolites are placed inside the tank, one of them is installed in its construction center. Form a light mark from the laser theodolite on the inside of the tank. The light mark is successively moved along the vertical plane passing through the baseline straight between theodolites. The telescope axis of the second theodolite is guided to each new position of the light mark, and the vertical deflection angle of the telescope in each theodolite is measured and measured from The baseline distance of the reservoir determines the radius and height of the reservoir by theodolites, based on the values of which the reservoir capacity of 1 sludge is judged. SL

Description

This invention relates to measuring

gel engineering and can be used to determine the capacity and calibration of vertical cylindrical tanks free of product.

The aim of the invention is to understand the measurement accuracy by reducing the number of measured pairs of IP-meters necessary to determine the tank's capacity, I The drawing shows a diagram of the measurement of vertical cylindrical I tanks.

In the drawing there are: laser theodolite 1 located in the building center of the reservoir, second theodolite 2 installed at the base distance (C) from the laser theodolite, control reservoir 3, p, and pr. ° the angles of deviation of the optical axis of the second theodolite and laser theodolite, respectively, AO - the radius of the first axis of the tank, H height 5 of the controlled tank

The measurements are carried out as follows.

Pre-placing two Theodolites inside the tank, setting Lebanon to one of them, for example, a laser theodolite in the construction center. Restore the horizontal line (connecting the starting point A to the centers of rotation of the theodolite's telescopes. For this, for example, the laser mark 1 on the surface of the tank, at a zero angle on its vertical limb, make a mark of the light mark on the surface of the tank (point A), then unfold the tube of the laser theodolite by 180 ° and, moving second theodolite, e dobivayut- center alignment mark light from a laser theodolite overlap with overlapping grid its telescope, with a zero value of its angular deviation in the vertical plane.

The distance AO, the height of the A-point A from the bottom and the base distance (C) projected on the bottom of the tank are measured, for example, using telolitic optical centers.

To measure the actual radii and heights of the positioned relative to the point A, according to

from 15

l 20 25

 30 35 40 - 45 CQ

, for each measured generatrix, the vertical diametral planes, to which the points of location of theodolites 1 and 2, the initial point and the given measurable component belong, are restored. The light mark formed by the projection of the laser light beam is directed vertically from the reference point A upwards (for example, at the spit between the annular sections of the cylinder) and the angular coordinates of the light mark are determined by both theodolites,

The radius of sa is determined by the formula

R C-tiJ:.

  tg,

Ca height is determined by the formula.

 C-tg (3, - tg / 3j. 1 tiff, tg

The angular coordinates of the remaining selected points of this generator are determined similarly, the tank radii in these sections and heights are correct. The restoration of the vertical (base) plane to which the generator belongs corresponds to the invariance of the horizontal angles of the theodolite telescopes 1 and 2 during the whole measuring cycle related to one generator.

At the end of the measurements, another one is formed on the selected generatrix, passing through another initial point E. The angular coordinates of the points on this generatrix are determined with the new position of theodolite laser 2 (at point B) ensuring the restoration of the new vertical diameter plane to which the points O, b, E, lying on the same diametral line. The distance by point O and B, as well as by other points characterizing the new positions of the theodolite laser 2, is measured each time.

After calculating the radii, the mean value of the radius of the cylindrical tank and the calculated value of the height of the tank and the found average value of the radius are judged on the capacity of the reservoir by means of owls, dnn of various generators and m sections.

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Claims (1)

Invention Formula I Method of determining the capacity cylindrical tanks, which means that the tank is installed vertically, a laser theodolite is placed in its center, and a second theodolite is located at its base distance, a light mark from the laser theodolite is formed on the inner wall of the controlled laser, and the optical axis is directed at it the telescope of the second theodolite, consistently move the light mark along the Forming tank. For each position of the light mark, the tank radius and its estimated capacity are determined taking into account the high You are a reservoir that, in order to increase the accuracy, the light mark is formed in a plane passing through the base straight between theodolites and pointing the second stage to it, measures the angle of inclination of the axis of the telescope of each theodolite in the vertical plane, and determining the height of the tank and taking ithemerek angular values and the base distance between theodolites.