Automatic measurement device and method for colloid layer of bitumite

Abstract

The present invention is automatic measurement device and method for colloid layer of bitumite, and belongs to the field of bitumite colloid layer measuring technology. The measuring system includes a computer, an I / O data card, an automatic heating and temperature controlling unit, a bitumite volume measuring unit, a probe driving mechanism and an automatic pressure measuring unit. The measurement method includes: measuring the temperature of bitumite over 250 deg.c with a thermocouple, measuring the volume change, measuring the colloid layer of bitumite with the probe driving mechanism via combining the last measurement and current bitumite state, calculating the upper and the lower surface layer positions of the colloid layer based on the pulse sequence number of the linear step motor, fitting the upper and the lower surface layer change curve by means of least-square method and obtaining the maximum thickness of the colloid layer. The method has measurement error lower than 0.5 mm.

Description

technical field [0001] The invention relates to a measuring device for a bituminous coal colloidal layer, more precisely, the invention relates to a device for automatically measuring a bituminous coal colloidal layer and a measuring method thereof, which realize high-precision automatic measurement of a bituminous coal colloidal layer. The invention belongs to the technical field of measuring devices for coal colloidal layers. Background technique [0002] Gel layer index is an important indicator of bituminous coal quality. It reflects the amount of colloids produced by coal during heating, and approximately characterizes the process of industrial coking. The colloidal layer is measured by simulating the conditions of an industrial coke oven. The coal sample is heated on one side under constant pressure (the upper part is pressurized and fixed), so that the coal sample forms a series of isothermal surfaces that decrease from bottom to top. Plastids and coal samples are d...

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Problems solved by technology

[0004] At present, the determination of the maximum thickness (Y) of the gelatinous layer is mainly based on human experience (or feeling), which is subjective.

In addition, the automatic detection device for the bituminous coal colloidal layer that has obtained the national utility model patent (92230782.2) has not been practically applied, because the patent does not perform automatic measurement in full accordance with the requirements of the national standard GB479-87 method for determining the bituminous coal colloidal layer index, and The driving motor of this utility model patent is a DC motor, and this kind of motor also needs to be equipped with corresponding displacement measurement sensors, such as potentiometers. It is installed on the outer ring of the miniature bearing connected with the lead screw. In this way, when the lead screw rotates, in order to ensure that the pressure sensor does not rotate, the pressure sensor must be subjected to torque, which will affect the pressure measurement accuracy.

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