SU1529067A1 - Apparatus for taking samples of aqueous and oil mixtures from pipe-line - Google Patents

Abstract

The invention relates to a technique for sampling inhomogeneous liquids from a pipeline and can be used for sampling liquid analyzers in the chemical, oil refining and other sectors of the industry. The aim of the invention is to increase the representativeness of the sample and simplify the design of the known devices. The device contains a sampler with an averaging chamber of spherical shape, fitted with blades and installed in the pipeline with the possibility of rotation about its axis. The sampler is made in the form of three flow-oriented pipes, the axis of one coincides with the axis of the flow, and the axis of the other two are separated from it by distances equal to 1/3 and 2/3 of the pipe's inner radius, while the lengths of said pipes are the ratio of 3: 2: 1. Such placement of the sampling organs in combination with the organization of their rotation ensures the collection of identical volumes of fluid from all parts of the flow section, i.e., the high representativeness of the average sample. 1 il.

Description

(21) 4351195 / 23-26

(22) 11/04/87

(46) 12/15/89. Bul No. 46

(71) Tbilisi Scientific and Production Association Analitpribor

(72) KSL pin

(53) 543.053 (088o8)

(56) USSR Author's Certificate No. 1280464, cl. G 01 N 1/10, 1984.

USSR Author's Certificate No. 44385, cl. 42 1 18, 1935.

(54) DEVICE FOR THE SELECTION OF SAMPLES OF WATER-OIL OIL MIXTURES FROM THE PIPELINE

(57) The invention relates to a technique for sampling inhomogeneous liquids from a pipeline and can be used for sampling liquid analyzers in the chemical, oil refining and other industries with the purpose of the invention is to increase the representativeness of the sample and simplify the design of known devices. The device contains a sampler with an averaging spherical chamber equipped with blades and installed in a pipeline rotatably about its axis, the sampler is made in the form of three flow oriented pipes, the axis of one coinciding with the axis of the flow, and the axes of the other two are from it distances equal to 1/3 or 2/3 of the internal radius of the pipeline, while the lengths of these pipes are in the ratio of 3: 2: 1. Such an arrangement of sampling organs in combination 1I with the organization of their rotation ensures the collection of identical volumes of liquid from all parts of the flow section, i.e., high predictability of the average sample. 1 il.

with

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The invention relates to a technique for sampling inhomogeneous liquids from a pipeline and can be used to take samples to analyzers for liquids in the chemical, oil refining and other industries.

The purpose of the invention is to increase the representativeness of the sample and simplify the design of the known device.

The drawing schematically shows the proposed device, a longitudinal section.

The device contains three intake tubes: a central tube 1 installed along the axis of the pipeline, and

peripheral tubes 2 and 3, installed on 1/3 and 2/3 of the pipeline radius, respectively. The tubes 1-3 are fixed in the wall of the container 4, made in the form of a hollow ball connected through an opening to the drain pipe 5. The container 4 has an annular toroidal protrusion 6 and is mounted in the housing 7 rotatably in the annular surface 8. The container 4 has at least two blades 9. The device is placed in the pipeline 10 g sealed entrance (not shown).

The device works as follows.

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The flow of the water-oil mixture is run through conduit 10, washing the entire device. When pipes get into the tubes 1 3, the mixture fills the container 4 and then the drain pipe 5 enters. The blades 9 are installed so that the movement of the mixture twists the container

4, which is rotated along the annular surface 8 of the housing 7 using an annular toroidal protrusion 6. A sample intake is provided by an intake pump (not shown) that sucks the mixture through the drain pipe 10. The tubes 1-3 take the mixture, respectively, along the flow axis at distances x 1 / 3 and 2/3 of the radius of the pipeline, while describing the circumference inside the pipeline. Such placement of the tubes allows for sampling at the points of maximum change in the flow rate, which makes it possible to achieve the required increase in the representativeness of the sample with a minimum number of intake organs. At the same time, the accepted ratio of tube lengths ensures that approximately the same amount of liquid is drawn from each tube. At the same time, it is possible to perform sampling from a region in which the influence of disturbances introduced into the flow by the rotating averaging chamber is small. Satisfactory results are shown with the following basic device dimensions: the inner diameter of the averaging ball chamber is 50 mm; angle of attack of the blades (with symmetrical arrangement) 15; diameter of intake tubes is 15 mm; length of the central intake tube is 90 mm.

Claims (1)

Invention Formula A device for sampling water-oil mixtures from the pipeline, containing a sampler with an averaging chamber equipped with blades and mounted in a housing rotatably about the axis of the pipeline, and a drain tube, characterized in that, in order to make the sample representative and simplify the design, the sampler is made in the form of three flow-oriented pipes, the axis of one of which coincides with the axis of the flow, and the axes of the other two are separated from it by distances equal to 1/3 and 2/3 of the internal radius of the pipeline, while the lengths of these nozzles are in the ratio 3: 2:: 1, respectively, and the averaging chamber is spheres and is associated with the body by means of an annular toroidal protrusion on its outer surface.