DEVICE FOR SAMPLING LIQUID FROM THE PIPELINE Russian patent published in 2021 - IPC G01N1/10 

FIELD: pipeline liquid sampling.

SUBSTANCE: invention relates to the technology and technique of sampling liquid from a pipeline and can find application in the oil production and other industries. A device for sampling liquid from the pipeline is disclosed, containing a sampling element installed on the pipeline with the orientation of the inlet opening towards the flow, a mixer for mixing the flow is installed coaxially with the sampling element in the pipeline, including a sequentially arranged perforated pipe and a block of transversely narrowing and expanding sections. In this case, the mixer is installed and fixed inside the cylindrical housing concentrically with the formation of an annular cavity between them, the cylindrical housing is connected to the pipeline by an adapter made with a central hole passing into a smooth annular diffuser, the opening angle of the smooth annular diffuser in the adapter is θ_d = 75…100°, a drain funnel is fixed on the lower part of the cylindrical housing, in the block of transversely narrowing and expanding sections of the mixer, in the places of the greatest transverse expansion of the sections, tear-off spherical recesses are made along the entire length of the circle in their cross-section, the relative depth of the tear-off spherical recesses in the places of the greatest transverse expansion of the sections of the mixer block is and the relative step between the tear-off recesses in the circumferential direction is and in the places of the greatest transverse narrowing of the sections, radial channels connecting the annular cavity between the cylindrical body and the mixer are made, the total area of the passage sections of these channels is less than the area at the outlet of a smooth annular diffuser ΣF_ps < F_d, made in an adapter, where h, d and t_u are the depth, diameter of the spherical tear-off recesses and the step in the circumferential direction between them.

EFFECT: invention increases the representativeness of the liquid sample taken from the pipeline and the accuracy of determining its composition, and due to hydrodynamic cleaning increases the resource of reliable operation of the device.

1 cl, 3 dwg