Device for collecting liquid samples from a vat

Abstract

The invention relates to a sampling system (3) to be arranged at the outlet of a vat (1) containing the liquid to be sampled, including a selector (4) that sets up switching among an array of similar vats (1), and especially a suction unit (5) that operates by releasing compressed air into a nozzle (28); the airflow direction is controlled by a valve (29), between a direction directed toward the outlet (6), causing the suction of the liquid from the vat (1), and an opposite direction when the valve (29) is closed, feeding the liquid back into the vat (1) and cleaning the pipe (2).

Description

technical field [0001] The present invention relates to a device for collecting a liquid sample from a vat, or even from multiple vats. Background technique [0002] Such devices are common in the nuclear industry and are used to analyze certain liquids laden with radioactive materials. The respective devices are usually placed in a shielded unit, and a remote operator is used to operate the respective devices. The liquid to be analyzed is initially contained in vats. The liquid undergoes suction through a conduit exiting in the top of the vat, which carries the liquid towards a sample holder on which a small container (commonly called a tank) has been mounted and which fills part of this tank . Once suction ceases, excess liquid drains to an outlet or flows through an inclined conduit back to the vat. [0003] A disadvantage of these devices is that excess liquid cannot be fully returned to the vat, and small droplets can remain on the conduit, which then crystallize: t...

AI Technical Summary

Problems solved by technology

[0003] A disadvantage of these devices is that excess liquid cannot be fully returned to the vat, and small droplets can remain on the conduit, which then crystallize: these crystals can be considered contamination and occur when the vat's original liquid has been replaced with another , these crystals can mix with later aspirated samples, limiting the quality of subsequent measurements

Another disadvantage of these devices is that it is difficult to engage a series of vats so that a sample cannot be selectively collected from any one of the series of vats

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