Waterproof water-level probe

Abstract

A waterproof water level probe, comprising a conductor (4), an integral water separator (5), a lower water separator (7), a ventilation hole (8), a waterproof casing (10), first and second signal conducting lines (6), wherein: vent holes (8) are provided on the waterproof casing (10) to balance the airflow pressure inside and outside the waterproof casing (10). The waterproof water level probe can be applied to the water level measurement of underground coal gasifier wells, groundwater wells, rivers, streams, storage tanks, water towers and various waterways.

Description

technical field [0001] In general, the present invention relates to a water level probe, and in particular, the present invention relates to a waterproof water level probe. The waterproof water level probe can be applied to the groundwater level measurement in underground coal gasification, and can also be applied to the water level measurement of groundwater wells, rivers, streams, storage tanks, water towers and various waterways. Background technique [0002] Underground coal gasification is the process of directly burning underground coal in a controlled manner, through the thermal and chemical effects of coal to generate combustible gas, which has the advantages of good safety, low investment, high efficiency, and less pollution. The attention of countries all over the world is known as the second generation coal mining method. But for underground coal gasification, the operations that can be performed manually are all on the ground, and it is difficult to directly int...

AI Technical Summary

Problems solved by technology

[0007] The acoustic wave water level gauge of prior art 1 is not suitable for deep well type water level monitoring, and its measurement range is relatively small, generally around 150m, and is not suitable for water levels where deep well pumping drawdown is relatively large (the depth is generally between 200m-300m) Observation, and because there is a certain well deviation in the furnace shaft, there is a certain error in the obtained data, and the diameter is relatively large, which is not suitable for the development of hydrological work in the process of underground coal gasification

and relatively high cost

[0008] For prior art 2, when it is used for pumping tests in deep wells, the water level observation tube must be lowered into the furnace well together with the water pump, and the water level observation gauge must be lowered into the observation tube. In this case, the observation tube often leaks In this case, the water level probe responds immediately before reaching the liquid level, causing observation errors and poor sensitivity

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