A liquid sampling device used in a vertical shore tank and its application method

Abstract

The invention discloses a liquid sampling apparatus for a vertical type shore tank. The apparatus comprises a liquid accumulator, a truncated cone-shaped liquid inlet device is arranged at the top of the liquid accumulator, a conical lifting type liquid inlet control valve is arranged at the upper part of the truncated cone-shaped liquid inlet device, and a liquid inlet control rope is connected to the top of the lifting type liquid inlet control valve; a liquid outlet and a liquid outlet control piston are arranged at the bottom of the liquid accumulator, a filter screen is arranged in the liquid accumulator which is below the liquid inlet device, and legs are arranged at the bottom of the liquid inlet device; and the liquid inlet device is provided with a handle, and the handle is connected to a hoisting rope. Compared with prior art, the apparatus is advantageous in that the liquid enters from the upper end and discharges from the lower end, and an upper end liquid inlet port employs a conical lid, so that liquid interchange is effectively prevented when the sampling apparatus is lifted, and during lifting resistance of liquid level is reduced; the lower end liquid outlet controlling means is higher than a pedestal, the sampling apparatus can be directly placed in a wide-mouth container, so that liquid can be automatically discharged, and working efficiency is substantially improved.

Description

technical field [0001] The invention relates to a liquid sampling device, in particular to a liquid sampling device used in a vertical shore tank and a use method. Background technique [0002] In domestic and foreign trade, crude oil, gasoline, crude glycerin, liquid chemical raw materials, base oil and other petrochemical products mostly adopt the vertical shore tank weighing method, which belongs to static measurement. The measurement principle is weight = volume × density, so The metering theory and standard methods are mature, so the vertical shore tank metering is a traditional metering method for liquid products, and it is still widely used in trade exchanges. [0003] Due to the uneven distribution of liquid quality and light and heavy components in the vertical shore tank, it is easy to cause density stratification. liquid, and such liquid distribution is generally not linear with the liquid level. For this kind of liquid, it is particularly important to take samp...

AI Technical Summary

Problems solved by technology

Although the sampler is suitable for sampling liquid samples at different layers, it can realize the sampling of liquid samples at all liquid levels, and can also realize the sampling of liquid samples at fixed layers, but it is not effective to use this sampler to extract the liquid in the vertical shore tank. Determining the sampling depth

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