SU823976A1 - Device for measuring liquid media physical and mechanical characteristics - Google Patents

Description

. Wu -., I. ;. L Isofet 0e is related to a test-measuring system, in particular, to the KS measure of viscosity of the flow meter type, and can be used in one-way control systems in the xHNfH, petrochemical and df. industry YcTpdicTBO is known for (1 emersion of pelvic and liquid fluids, with pneumatic pneumatic: a bridge, in the shoulders of which there are pussels, and in a diagonal; - registering a fire, at the entrance to the shevmatic bridge a counter flow regulator is installed. vosheys of the bridge in the form of turbulent pneumatic supports, the diameters of which are equal in 1THE POSITIVE arms of the bridge, and differing in size D1 in adjacent arms. However, the device does not have a sufficiently high sensitivity in measuring physical characteristics of liquid media with low viscosity. The closest in technical essence to the present invention is a device for measuring viscosity, containing a capillary system, a constant flow setting device recording a transmitter, in (Egorom capillary system in the form of identical pairs of series-connected capillaries of different lengths and of the same internal diameter with an opposite pole arrangement of long and short capillaries in each and equipped with intercapillary chambers connected to a regis trialing device 2}. Odaco devices can measure viscosity in the range from 10 to 300 sp and higher and are characterized by low sensitivity when measuring the viscosity of liquids from 0.9 to 15 SP, for example, latex, emulsion and g. The purpose of the invention is to increase the sensitivity of the viscosity measurement. j The goal is achieved by the fact that a device for measuring the physicomechanical characteristics of liquid media, containing a constant flow setting device, a recording gfib and a cap cap system, made in the form of an aerial connection of two identical pairs of discontinuously connected capidlles of the same internal diameter and different OC & The lengths with the opposite side arrangement of the long and short capillaries in each pair and provided with intercapillary chambers additionally contain a spiral capillary collecting intercapillary chambers, the recording device being connected to the spiral capillary.

The drawing schematically shows the proposed device.

The device contains a constant flow setting device 1, a capillary system including these capillaries 2 and 3, short capillaries 4 and 5, as well as intercapillary chambers 6 and 7. Intercapillary chambers b and 7 are assembled with a spiral capillary 5f to which recording device 9, Long and. short capillaries in the system have the opposite direction.

The device works as follows.

The measured medium is continuously pumped through the upper and lower pairs of capillaries using a constant-flow meter 1. In this case, the difference in intercapillary camas 6 and 7 is proportional to the viscosity of the liquid, in the case of communication between the capillary chambers and the capillary 8, the flow rate through it is also determined by the viscosity of the medium. ATTOM dP is a component of the differential, determined by the forces of viscous trenn along the length of the spiral capillary, and, depending on its length, diameter and flow rate through it, which, in turn, is also determined by the viscosity pressed through the measuring circuit of the liquid; q P is the component of the drop determined by local hydraulic resistances on the spiral capillary, and is concerned with their nature, the density of the pumped medium, and fluid flow through the spiral capillary, which is determined by the viscosity pumped through the fluid system.

The value of AR can be represented.

as

SM

.

- Megde coefficients

% of hydraulic resistance at the inlet, outlet, from the capillary and on the helix.

Moreover, the velocity V of the medium in the spiral capillary depends, as indicated, on the viscosity of the liquid medium pumped through the Capillary system.

Thus, the total pressure drop is determined by both the viscosity and the density of the medium under investigation, which provides an increase in the sensitivity of measurements in the analysis of the composition of liquid mixtures.

F

the invention

about rmu l and

A device for measuring the physicomechanical characteristics of liquid media containing interconnected constant flow setting device and a capillary system made in the form of a parallel connection of two identical pairs of serially connected capillaries of the same internal diameter and of different lengths with the opposite arrangement of the long and short capillaries in each pair and provided with intercapillary chambers and a recording device, characterized in that, in order to increase the measurement sensitivity, it tion comprises a spiral capillary informing mezhkapill molecular chamber, wherein the recording device is connected to the spiral-shaped capillary.

Sources of information taken into account in the examination

1. USSR Author's Certificate No. 393641, cl. G, 01 K 9/26, 1971.

2. USSR author's certificate Js 371479, cl. Q01N 11/08, 1971 (prototype).

Claims (1)

Claim A device for measuring the physicomechanical characteristics of liquid media containing interconnected constant flow master and a capillary system made in the form of a parallel connection of two identical pairs of serially connected capillaries of the same internal diameter and different length with the opposite arrangement of the long and short capillaries in each pair and fitted intercapillary cameras and a recording device, characterized in that, in order to increase the sensitivity of the measurement, it complements It contains no spiral capillary informing mezhkapillyarnye chamber, wherein the recording device is connected to the spiral-shaped capillary.