All working condition high precision electrode sensor system of steam pocket large mass or water level
A technology of electrode sensor and steam drum water level, which is applied in liquid level indicators for physical variable measurement, steam boilers, steam generation, etc. Large negative error and other problems, to achieve the effect of eliminating water flow interference, reducing economic losses and improving reliability
Inactive Publication Date: 2006-04-12
高维信
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Problems solved by technology
For a period of time after the boiler is switched from normal operation to emergency shutdown, the flow velocity inside the steam collecting conduit and the downcomer is still high, which will inevitably cause great interference to the measurement system, cause large measurement errors, and directly affect the steam flow rate. The safety of fast cooling with full water, and the accuracy and reliability of rapid treatment of water shortage shutdown accidents
Since the full-water and full-range electric contact measuring cylinder is a single-tube measuring cylinder, the structure is simple, and the measurement negative error is large. Even if the above-mentioned defects of system sampling are solved, it cannot be used for water level safety monitoring during boiler operation.
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[0018] As shown in Fig. 1, it is the high-precision electrode sensor system of a large number of limited full working conditions for the steam drum water level of the present invention. patented technology, not described in detail here), it contains two steam cage-type built-in independent sampling water column measuring cylinders I, II, the upper limit measuring cylinder in the box I in the accompanying drawing 5, which can measure higher than the apex of the inner wall of the steam drum The water level in the box II of the accompanying drawing 5 is the lower limit measuring cylinder, which can measure the water level lower than the steam drum; the electrode sensor 4 includes a plurality of steam side and water side sampling pipes, and its new steam side upper limit sampling pipe 5 is connected to the steam side. On the steam collecting conduit 2 at the top of the drum 1, the raw steam side sampling pipe 6 is connected to the steam side pipe A of the steam drum; the raw water ...
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A system for measuring the working behaviour of ultrahigh-pressure subcritical steam drum of boiler by sampling and sensing has an electrode sensor consisting of two high-precision measuring barrels. It may be an integrated sampling water column or two individual sampling water columns. Said measuring barrel has multiple lateral steam and water sampling tubes connected to steam drum. Its advantages are high effect to eliminate the interference of water flow and high correctness.
Description
Technical field: [0001] The invention relates to the technical field of thermal measurement, in particular to a high-precision electrode sensor system with a large amount of steam drum water level and full working conditions. . technical background [0002] Measuring the water level of the steam drum with electrode sensors is one of the important means to realize the safe monitoring of boiler water level operation. At present, the drum water level electrode-type measuring sensor (measuring cylinder) is divided into three types according to its measuring range: the monitoring main meter measuring cylinder, the full water and electricity contact measuring cylinder, and the whole electric contact measuring cylinder. The steam-side and water-side sampling tubes of the monitoring main meter measuring cylinder are respectively connected to the original steam-side sampling tubes and water-side sampling tubes on the steam drum. The distance between the two can only cover a part of ...
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IPC IPC(8): G01F23/22F22B37/46
Inventor 高维信
Owner 高维信