Integrated sampling positioning method

Abstract

The invention relates to a method for assaying, analyzing and sampling a liquid in a storing tank in the fields of petroleum, chemical industry or other industries, in particular to an integrated sampling positioning method which at least comprises a box body, a positioning small steel belt, a sampling small steel belt, a positioning wheel, a wheel shaft, a shaft sleeve, a constant-force spring and a sampling tube, wherein the wheel shaft is horizontally fixed in the box body; one end of the wheel shaft is connected with the positioning wheel through a bearing; the constant-force spring is fixedly sleeved with the other end of the wheel shaft; the positioning wheel is a convex wheel with a round step; the positioning small steel belt and the sampling small steel belt are respectively fixed on convex wheels with different diameters; one end of the positioning small steel belt extends downward through a hole at the bottom of the box body and is fixed at the bottom of the storing tank; the other end of the positioning small steel belt is wound clockwise on a large-diameter wheel body of the positioning wheel; one end of the sampling small steel belt extends downward and is connected with the sampling tube; and the other end of the sampling small steel belt is wound clockwise on a small-diameter wheel body of the positioning wheel. The integrated sampling positioner has light weight, simple structure, and wide application, is easy in installation and can realize precise positioning of one or more sampling tubes.

Description

technical field [0001] The invention relates to a device for testing, analyzing and sampling liquid in storage tanks in petroleum, chemical industry or other industries, more precisely, an integrated sampling and positioning method. Background technique [0002] In the production process of petroleum, chemical and other industries or the storage stage of raw materials and finished products, it is necessary to continuously collect representative samples for laboratory analysis. At present, there are generally two sampling methods, one is manual sampling, and the other is using Sampler samples. When sampling with a sampler, it is necessary to position the sampling tube in the tank in order to obtain the medium in different positions. At present, a folding structure and a telescopic stacking structure are commonly used. The folding structure uses one or two sampling tubes One end of the bracket is suspended on the floating disc or buoy, and the buoyancy is used to pull the bra...

AI Technical Summary

Problems solved by technology

When sampling with a sampler, it is necessary to position the sampling tube in the tank in order to obtain the medium in different positions. At present, a folding structure and a telescopic stacking structure are commonly used. The folding structure uses one or two sampling tubes One end of the bracket is suspended on the floating disc or buoy, and the buoyancy is used to pull the bracket to rotate around the fixed axis; the sampling tube fixed on the bracket moves accordingly, so as to realize the positioning of the sampling tube. This structure is large in size and heavy in weight. Complicated, greatly affected by other devices in the tank, and the sampling accuracy is not enough

[0003] The telescopic type is disclosed by Chinese patent (its patent number: ZL02208233.6). It is provided with a telescopic frame in the tank. The telescopic frame is a scale link mechanism. The sampling tube is fixed in the telescopic frame. In fact, the expansion and contraction is not uniform, the error is still large, and the installation is cumbersome. The tank body needs to be modified and welded, which still requires a certain space, and there are many parts, high failure rate, high manufacturing cost, and inconvenient installation and transportation.

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