Apparatus and method for overcoming hydrostatic level gauge static friction force and improving precision

Abstract

The present invention discloses an apparatus and a method for overcoming hydrostatic level gauge static friction force and improving precision. The apparatus comprises a power source assembly, wherein the power source assembly is a liquid level, float, connection rod or liquid storage barrel drive assembly, and is used for driving between the float (3) and the inner wall of the liquid storage barrel (2) or the connection rod (5) and the meter (1) so as to overcome static friction force and generate relative motion. According to the present invention, the power source is additionally arranged on the hydrostatic level gauge, the power source drives the liquid level, the float, the connection rod or the liquid storage barrel, and the static friction force between the float and the inner wall of the liquid storage barrel is overcome to generate the relative motion, such that the float can really reflect the liquid level change in the barrel, and the measurement accuracy (the precision can achieve about 0.02 mm) of the hydrostatic level gauge can be improved; and the power source drives the liquid level, the float, the connection rod or the liquid storage barrel, such that the connection rod can move, the snapping problem possibly occurring between the connection rod and the displacement meter can be solved, the float can move, the liquid level change in the barrel can be really reflected, and the measurement accuracy of the hydrostatic level gauge can be improved.

Description

technical field [0001] The invention relates to a method for reducing the measurement error of a static level, in particular to a device and a method for overcoming the static friction of the static level and improving the precision. Background technique [0002] Static leveling system is a precision instrument for measuring the relative settlement between two or more points. It is mainly used for monitoring the vertical displacement and inclination of tunnels, dams, nuclear power plants, high-rise buildings, foundation pits, bridges, subways, etc. The static leveling system is generally installed on the measuring pier with the same height of the measured object or on the contour line of the wall of the measured object. The change of the liquid level changes synchronously. The liquid level of each liquid storage tank is measured by the displacement meter, so the liquid level change of each static level can be measured. [0003] At present, the gap between the outer wall...

AI Technical Summary

Problems solved by technology

[0003] At present, the gap between the outer wall of the float and the inner wall of the liquid storage tank of the common static level on the market is very small, and the contact between the float and the liquid storage tank is easy to occur, resulting in a large static friction force. Even if there is no contact, the float and the storage tank There will also be static friction between the liquids in the liquid bucket

Although the value of this static friction force is not large, when the liquid level in the liquid storage tank changes very little, the upward force of the float is smaller, and when the upward force of the float is smaller than this static friction force, it will not be able to overcome this static friction force

In this case, when the static level is working, even if the liquid level in the liquid storage tank changes, if the floating force of the float does not reach the size of the static friction force, it will cause the liquid level to change but the float will not be stuck. movement, directly caused the measurement error of the static level

In addition to the large static friction force that may be generated between the float and the liquid storage tank, the connecting rod may also shift during the movement, and the phenomenon of jamming between the connecting rod and the displacement gauge may occur, which will directly hinder the normal operation of the float. float or sink

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