High Accuracy Static Levels to Eliminate Temperature Drift

Abstract

The invention discloses a high-precision static level gauge capable of eliminating temperature drift. The high-precision static level gauge comprises a floater (7) and a limiting assembly (6), wherein the floater (7) floats on a liquid level (9); the external diameter of the floater (7) is smaller than or equal to four fifths of the internal diameter of a liquid storage barrel (3), and the floater (7) is mounted on a displacement meter (1) through a connecting piece a (8); the limiting assembly (6) is mounted on the floater (7), and the external diameter of the limiting assembly (6) is matched with the internal diameter of the liquid storage barrel (3). According to the invention, the external diameter of the floater is shortened, therefore, the draft cross-sectional area of the floater is effectively increased, and displacement measurement errors caused by liquid level change after temperature drift are reduced. The external diameter of the limiting assembly is matched with the internal diameter of the liquid storage barrel, and a gap between the outer edge of the limiting assembly and the inner wall of the liquid storage barrel is small, so that the floater can be prevented from generating large-angle offset, and the floater can stably float and sink up and down in the liquid storage barrel.

Description

technical field [0001] The invention relates to a static level, in particular to a high-precision static level capable of eliminating temperature drift. Background technique [0002] Static leveling system is a precision instrument for measuring the relative settlement between two or more points. It is mainly used to monitor the vertical displacement and inclination of dams, nuclear power plants, high-rise buildings, foundation pits, tunnels, 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] The float structure of the traditional static level is as follows: figure 1 with figure 2 As shown, the float floats on the liqu...

AI Technical Summary

Problems solved by technology

This method has disadvantages such as high algorithm complexity and difficult implementation, and the compensation method cannot fundamentally weaken the influence of temperature drift on measurement accuracy

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