High-temperature unconfined pressure instrument

Abstract

At present, unconfined compression tests for solid particle systems are all executed at room temperature, while in actual engineering, many solid particle systems are in high-temperature environments,and a device for measuring compressive strength of the solid particle systems at the high temperature is needed. Therefore, the invention provides a high-temperature unconfined pressure instrument. The high-temperature unconfined pressure instrument comprises a force measuring ring, a scale, a connecting rod, an upper pressing plate, a lower pressing plate, a screw, a pressing frame, a hand wheel, a support frame, a high-temperature electric heating furnace, heating elements, a temperature measuring element, a temperature control device, a furnace wall, a furnace door and a test sample, can perform unconfined compressive strength tests on the solid particle systems at the high temperature and can accurately measure the unconfined compressive strength of the solid particle systems at the high temperature.

Description

technical field [0001] The invention relates to an unconfined pressure instrument, in particular to an unconfined compressive strength test of a solid particle system at high temperature. Background technique [0002] The unconfined compressive strength of the solid particle system means that the sample is placed in the unconfined pressure instrument, and no surrounding pressure is applied to the sample, and the vertical axial pressure is applied to the cylindrical sample through the runner until the sample generates shear. The maximum axial pressure that the sample bears at this time is called the unconfined compressive strength. [0003] The unconfined compressive strength test instrument is simple in structure and easy to operate. It can replace the triaxial test to measure the compressive strength of the solid particle system. It has become one of the main means of measuring the compressive strength index of the solid particle system in domestic and foreign engineering d...

AI Technical Summary

Problems solved by technology

[0005] In actual engineering, many solid particle systems are in high-temperature environments. For example, during the combustion process of power plant boilers, due to the low melting point of ash particles, it is easy to slag on the tube wall of the heating surface and reduce the efficiency of the boiler. Steam must be used The soot blower removes the slag on the heating surface. For those with serious slagging characteristics, it is even necessary to use hydraulic soot blowing to remove it. Measuring the unconfined compressive strength of the slag at high temperature is of great importance to the safe and economical operation of the boiler. However, there is no relevant measuring device for the unconfined compressive strength test of slag at high temperature.

[0006] In addition, the mechanical properties of concrete buildings at fire sites are easily degraded at high temperatures, which has an important impact on the safety of building structures. However, there is no unconfined compressive strength test device that can measure solid particle systems under high temperature conditions.

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