Verification method of sectional type magnetic floater liquid level meter

Abstract

The invention discloses a verification method of a sectional type magnetic floater liquid level meter. The verification method of the sectional type magnetic floater liquid level meter comprises the steps that a pull-up assembly is provided; the pull-up assemblies are in one-to-one correspondence with the buoys; the lifting assembly comprises a lifting handle and a lifting rope, and the first end of the lifting rope is fixed to the lifting handle; the lifting rope extends into the buoy from a water outlet in the top of the corresponding buoy, and the second end of the lifting rope is fixed to the magnetic floater; the magnetic floats in the float bowl are sequentially pulled up to the top of the float bowl from the bottom of the float bowl by means of a pulling-up assembly, and the positions of the magnetic floats are kept; recording a first output signal of the transmitter obtained when the at least one magnetic floater is located at a first preset position in the pulling-up process; the first output signal is compared with the first standard electric signal, and whether the sectional type magnetic floater liquid level meter is normal or not is checked. According to the embodiment of the invention, simple and efficient verification of the sectional type magnetic floater liquid level meter can be realized, and the verification cost is reduced.

Description

technical field [0001] The invention relates to the technical field of instruments and meters, in particular to a calibration method for a segmented magnetic float liquid level gauge. Background technique [0002] The magnetic float level gauge can be used as a measuring instrument for the submerged liquid level in the containment of nuclear power plants. It is used to measure the submerged water level in the containment in nuclear power plant accident conditions, and provides post-accident monitoring functions for operators. Since the ability of the single-stage liquid level gauge to monitor liquid level changes is limited by the height of the buoy, and the height of the buoy is limited by the manufacturing process, the prior art introduces a segmented magnetic float level gauge. In order to ensure the measurement effect of the segmented magnetic float level gauge, it is necessary to calibrate it. [0003] The existing verification method is to fill the buoy of the liquid ...

AI Technical Summary

Problems solved by technology

[0004] 1) The filling and draining operation of the buoy is complicated, and the calibration efficiency is low; and the buoy includes a bottom water inlet and a top water outlet, which are difficult to block to maintain the water level, and liquid leakage or even running out is prone to occur during the calibration, which will bring Security risks

[0005] 2) The wet calibration method needs to connect a bypass liquid level plate to each buoy to determine the water level in the buoy, so the calibration cost is high, and the preparatory steps before the calibration involve multiple pipe joints and multiple The installation of the bypass liquid level plate, the calibration process is cumbersome

And this method is not very operable in actual application scenarios (narrow space, total height of more than ten meters), and cannot be verified based on actual installation scenarios

[0006] Therefore, the existing calibration methods have the problems of high calibration cost, complicated operation and low efficiency.

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