Built-in load sensor of high-pressure vessel and load calculation method

Abstract

The invention provides a built-in load sensor of a high-pressure container, which is arranged in the high-pressure container and is used for measuring an axial load borne by an experimental sample. Comprising a pressure transmitting element, a guiding element in sliding connection with the inner wall of a container, a pressure bearing element in contact connection with the pressure transmitting element, a capacitor electrode arranged in the pressure bearing element, a pressure bearing base opposite to the center of the pressure bearing element and in contact connection with the pressure bearing element, a conductive copper column and a wire connecting the conductive copper column and the capacitor electrode. The load value is converted into the change of the distance between the capacitance electrodes through the pressure-bearing element, then the change of the load borne by the pressure-bearing element is detected by observing the change of the capacitance value, the mode can be stably observed in a high-pressure gas environment, and the sensitivity is higher.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a load sensor built into a high-pressure vessel and a load calculation method. Background technique [0002] The mainstream load sensors on the market mainly include resistance strain type, piezoelectric type, piezoresistive type and so on. For rock mechanics presses with a relatively large tonnage, the load sensor is mostly resistive, that is, a material with a uniform elastic modulus is selected as the pressure-bearing component, and then the strain gauge is pasted on it. Since the load and strain borne by the pressure-bearing element become proportional, the resistance value of the strain gauge corresponds to the borne load value, so as to obtain the load (pressure value). [0003] Resistive sensors have good linearity and stability at normal temperature and pressure, so they are widely used in rock mechanics experimental presses. For high-pressure gas medium rock mechanics ...

AI Technical Summary

Problems solved by technology

In the subsequent data processing process, the friction force cannot be fully deducted, resulting in the inability to accurately obtain the load value of the experimental sample, thus affecting the measurement accuracy

Therefore, the current mainstream load sensors on the market cannot accurately obtain the load value borne by the experimental sample in the high-pressure vessel

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