A Precise Alarm System for Freezer Salt Water Leakage

Abstract

A brine leakage accurate alarm system for freezers comprises an evaporator, a brine pump, a liquid distribution ring, a liquid collecting ring and a plurality of freezers. The liquid distribution ring and the liquid collecting ring are in sealed communication with liquid inlet pipes and liquid outlet pipes of the freezers respectively through pipes with ball valves, flowmeters are respectively arranged between the liquid distribution ring and the liquid inlet pipe of every freezer and between the liquid collecting ring and the liquid outlet pipe of every freezer, a data collector transmits flow information of the flowmeters to a brine flow monitoring system positioned in a monitoring chamber, and the monitoring system is used for analyzing a real-time difference value of the liquid inlet amount and the liquid outlet amount of every freezer and sending alarm commands to an alarm according to analysis results. The brine leakage accurate alarm system can accurately and rapidly display flow data of every freezer; when brine flow of some freezer is abnormal, an alarm can be given timely, a name of the abnormal freezer can be displayed accurately, timely troubleshooting and treatment are facilitated, the chance that brine leaks into a freezing wall is reduced, and extremely good protection effect on the freezing wall is achieved.

Description

technical field [0001] The invention belongs to a freezer brine leakage alarm system, in particular to an alarm system for real-time monitoring of freezer brine flow used in wellbore freezing method construction. Background technique [0002] Sinking by freezing method is one of the most effective methods for wellbore construction in unstable water-bearing formations. It is widely used and the technology is mature. However, in the freezing construction of deep wells, due to factors such as low brine temperature, large deformation of the frozen wall, and unscientific construction management, it is easy to cause excessive deformation of the frozen pipe and cause pipe breakage accidents, resulting in the brine in the frozen pipe seeping into the ground to melt the frozen wall, seriously When the skylight is opened on the frozen wall, the water in the formation will pour into the wellbore, which will lead to well flooding accidents, resulting in delays in the construction period...

AI Technical Summary

Problems solved by technology

However, in the freezing construction of deep wells, due to factors such as low brine temperature, large deformation of the frozen wall, and unscientific construction management, it is easy to cause excessive deformation of the frozen pipe and cause pipe breakage accidents, resulting in the brine in the frozen pipe seeping into the ground to melt the frozen wall, seriously When the wall is frozen and the skylight is opened, the water in the formation will pour into the wellbore, which will lead to well flooding accidents, resulting in delays in the construction period and huge economic losses.

At present, there are two methods for monitoring the brine loss in the brine system: one is to install a flow meter on the brine main pipe, and judge the brine loss situation through the change of the flow rate, but because the change of the flow rate of a single chiller has little effect on the total flow rate, Therefore, it is impossible to judge the brine leakage of a single freezer; the other is to install a brine level alarm in the brine tank, which will automatically alarm when the brine level drops to a certain position. There is a mutual balance device between the liquid levels. When the brine liquid level drops to a certain position, the brine leakage is already very large, which cannot provide a timely alarm for the brine leakage of a single freezer.

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