A high-precision electronic multi-activity isothermal adsorption experimental device

Abstract

The invention relates to a high-precision electronic multi-activity isothermal-adsorption experimental apparatus. The experimental apparatus consists of an external case and a single-activity weighing unit and is characterized in that the external case comprises an isothermal water cycle temperature control system, adjustable foot pads, a glass door, a level gauge, a data recording system and a control panel; the isothermal water cycle temperature control system consists of a water tank, a temperature control component, an electric heating wire, a water pump, a water-circulation pipeline and a temperature control system; the single-activity weighing unit consists of a shell, high-precision electronic weighing units, a dynamic atmosphere circulator, a working area, a sample cabinet, a water cistern and a weighing bottle; the shell is a rectangular hollow shell, five high-precision electronic weighing units are arranged in the shell, and the sample cabinet and the water cistern are separately placed at an upper half part and a lower half part of the shell. According to the high-precision electronic multi-activity isothermal-adsorption experimental apparatus, an adsorption environment can be effectively controlled indoors, data of a plurality of samples of multiple activities are accurately and simultaneously measured and are continuously recorded under different temperatures, and a continuous sample quality changing process is obtained.

Description

technical field [0001] The invention relates to the field of research on the hydration of clay materials under different activity conditions, in particular to a high-precision multi-activity isothermal adsorption experimental device capable of automatically recording and processing data. Background technique [0002] The water swelling of clay plays an important guiding role in the study of the stability of drilling fluid to the borehole wall and the construction and improvement of drilling fluid system, and isothermal adsorption is an important method to study the adsorption capacity of clay. The isothermal adsorption experiment has very high requirements for accuracy. In the case of a large number of samples, the experiment cycle is very long, and it is greatly affected by environmental factors and human factors. The experimental process is cumbersome, and uncertainties in the middle often lead to experimental failure or experimental result errors. If it is too large, it w...

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Problems solved by technology

[0003] At present, the number of samples measured by a single measurement of isothermal adsorption instruments commonly used in laboratories at home and abroad is generally too small, which cannot well meet the experimental requirements of multi-sample isothermal adsorption. Adding air conditioning to the work area is still the first choice for many laboratories to conduct multi-sample isothermal adsorption experiments. common method

Relevant domestic patents such as "Coal High-pressure Isothermal Adsorption Experimental Device" (CN202502025U), "A Coal / Shale Isothermal Adsorption Experimental Device" (CN201410222208.8) and so on have a small number of single measurement samples; "Nuclear Magnetic High-pressure Isothermal Adsorption Device" (CN201510085193.X) The NMR method is used to measure the adsorption amount. The method process is too cumbersome and can only be measured once; other related patents only rely on unreliable gas supply systems, and do not pay attention to changes in the isothermal adsorption gas environment

The isothermal adsorption experimental devices that have been commercialized at home and abroad can accurately measure the adsorption amount, but only a few groups of samples can be measured in one measurement

And expensive, single function, lack of wide applicability

Moreover, the humidity and cycle changes of the air inside the device are complex after heating, and there is no auxiliary device to adjust the air state

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