RU1793257C - Method of determining the quantity of the material under investigation in a vessel - Google Patents

Abstract

Usage: instrumentation. SUMMARY OF THE INVENTION: the hydrostatic pressure in a vessel 1 with solution 2 and the hydrostatic pressure in an additional vessel 11 are measured with a reference liquid, e.g. solvent 12. The hydrostatic pressure is measured at the same depth ft. The difference in hydrostatic pressures determines the amount of solute in solution 2. 1 sludge.

Description

3

With

y eat

The invention relates to the field of instrumentation, namely to a metering technique.

A known method for determining the amount of test substance in a vessel, including measuring the hydrostatic pressure in it ..

This method does not provide a determination of the amount of solute in the test medium.

The aim of the invention is to increase efficiency by determining the amount of solute in the test medium.

The goal is achieved in that in a method involving measuring the hydrostatic pressure in a vessel, an additional vessel with a reference liquid is used, in which hydrostatic pressure is measured, and the hydrostatic pressure in both vessels is measured at the same depth and the amount of dissolved is determined by the difference in hydrostatic pressures substances in the investigated liquid medium ..;

The drawing shows a diagram of a device that implements the proposed method.

The device comprises a vessel 1 with an investigated liquid medium, for example, solution 2. Vessel 1 is made with an inlet pipe 3 provided with a valve 4, and a drain pipe 5 provided with a valve 6. and communicated with the hole 7 of the vessel 1.

The piezometric tube 8 is installed at one end in the vessel 1 at the level of the lower edge of the hole 7 (to a depth h from the surface of the solution), and is connected to the pressure gauge 9 at the other end,

A float 10 is placed in the vessel 1 with a vertically located additional vessel 11 fixed in its upper part for a reference liquid, for example, solvent 12. filling this vessel to the top. The height of the additional vessel 11 is equal to the distance from the lower edge of the hole 7 to the upper edge of the vessel 1. The piezometric tube 13 is lowered at one end into the additional vessel 11 to a depth h equal to the immersion depth of the piezometric tube 8 in solution 2, and is connected to the pressure gauge 14 by the other end. the wick heat exchanger 15 is immersed in the vessel 1 and at one end provided with an adjustable valve 16 is connected to the pressure line TT, and the other end is connected to the additional vessel 11.

From the pressure line 17, the solvent is supplied through the coil-heat exchanger to an additional vessel 11 to ensure that it is completely filled, while maintaining the same temperature of the solution 2 and solvent 12. The solvent flow is controlled by an adjustable valve 16.

Piezometric tubes 8, 13 are in communication with a source of compressed air 18 through tubes 19.

The outputs of the pressure gauges are connected to a computing unit 20 to which the indicating device 21 is connected.

The method of determining the amount of the investigated (dissolved) substance in the vessel

carried out as follows.

Compressed air is supplied to the piezometric tubes 8 and 13 from a source of compressed air 18. Before the measurement, solution 2 is drained from vessel 1, valve 6 is closed,

valve 4 is open, allowing the solution 2 to be poured through the inlet tube 3 by means of a pump or by gravity. When solution 2 enters vessel 1, the level of solution h increases and at the same time

equally with the level of the solution, the float also rises to a height h. Before work, it is necessary to adjust the position of the piezometric tube 13. To do this, by stopping the flow of the solution,

closing the valve 4, the installation of the piezometric tube 13, lowering it into the solvent 12 also to a depth of h, the solvent must fill up the additional tank 11 and overflow over its edge, which is determined by the degree of opening of the valve 16. With this position of the piezometric the tube 13 is rigidly attached to the vessel 1. Later, when operating, both piezometric tubes 8

and 13 are respectively immersed in solution 2 and solvent 12 to the same depth at any level of solution 2 in vessel 1, because a change in the level h of solution 2 causes an equal change in the position of the float 10 in

vessel 1.

In this case, the manometer 9 with the piezometric tube 8 fixes the hydrostatic pressure of the solution at a depth h, and the manometer 14c with the piezometric tube 13 fixes the hydrostatic pressure of the solvent in the additional vessel 11 at the same depth h. The signals from the pressure gauges 9 and 14 are transmitted to the computing unit 20 and compared, and their difference is recorded by indicating device 21, which may have a scale of 100 degrees in kg or in units of solution concentration.

51793257 6

Claims (1)

I Formula of the invention an additional vessel with a reference liquid Method of quantification by a study in which hydrostatic of the injected substance in the vessel, including pressure, and the hydrostatic pressure measurement in it of the hydrostatic pressure in both vessels is measured at the same pressure, characterized in that, with their own depth and the difference of hydrostatic in order to increase the efficiency by means of pressure, the amount of solution is determined, the amount of dissolved substance in the test liquid is determined substances in the test medium are used.