Calibration device and method for flowmeter of grouting unit

Abstract

The invention discloses a device and a method for calibrating a flowmeter of a grouting unit, comprising the following steps: initializing the calibrating sign of the flowmeter and the full scale value of the flowmeter; Check whether the slurry mixing system operates within the interval. If the slurry mixing system operates, initialize the initial slurry volume of the slurry mixing system and return to step 2; judge whether the system slurry injection rate is a small injection rate. If it is not a small injection rate, return to step 2. If it is small Injection rate, calibration flowmeter full scale value and set flowmeter calibration flag. The invention can use the machine to automatically measure the slurry volume of the slurry tank, and automatically calibrate the flowmeter, which can improve the automation level of the site, reduce supervision intervention and work intensity; control the key quality points of grouting, improve the quality of grouting, and reduce unnecessary grouting Time, improve the grouting progress.

Description

technical field [0001] The invention belongs to the technical field of grouting, and in particular relates to a calibrating device and method for a flow meter of a grouting unit. Background technique [0002] During the grouting process, the injection rate measured by the flowmeter is a very important parameter in the grouting process, and its accuracy is very important for engineering measurement and the end of grouting. At present, the electromagnetic flowmeter commonly used in the domestic grouting industry has an error range of 0.5% when measuring water, and an error range of about 1% when measuring grout, especially thick grout, so the error at the end of grouting often results in the following 2 cases: [0003] (1) The hole is no longer eating slurry, but the system site flow has not reached the screen slurry flow rate, and cannot be completed normally. At this time, the construction unit will often ask the supervisor to measure the slurry tank, check the actual slurr...

AI Technical Summary

Problems solved by technology

[0003] (1) The hole is no longer eating slurry, but the system site flow has not reached the screen slurry flow rate, and cannot be completed normally. At this time, the construction unit will often ask the supervisor to measure the slurry tank, check the actual slurry consumption, and record the actual slurry consumption. After the meter shows the amount of grout consumed, make a note, and then end the grouting

Doing so is a lot of work and requires human intervention

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