High parameter closed vessel liquid level continuous measurement method

Abstract

The invention provides a method for continuously measuring the liquid level of a high parameter sealed container. The traditional method is contact type measurement and has the defects that the operation is not stable and the closed loop operation can not be realized relative to the liquid level of the high parameter sealed container, and the like. The method for continuously measuring the liquid level of the high parameter sealed container comprises that: a constitution measuring unit is respectively connected with a radiation source container (2) and a detector (4) at the upper end and the lower end of a measurement barrel (3), the detector is connected with a signal processing system (8), the measurement barrel is welded on eduction tube valves (7) at the two sides of a detected container (1), when the valves are opened, the liquid level of the measurement barrel is identical with that of the detected container, when the switch of the radiation container is turned on, rays pass through the detected liquid and are received by the detector as well as are transmitted to the signal processing system, and the liquid level value is calculated according to the preset mathematic model. The method can be used for continuously measuring the liquid level of the sealed container with wide range in a non-contact way.

Description

Technical field: [0001] The invention relates to a method for continuously measuring the liquid level of a high-parameter airtight container. Background technique: [0002] The technical problem of continuous detection of the liquid level in a high-parameter airtight container, especially for the measurement of a large range, has not yet been a feasible method. Generally, different methods are adopted according to different working conditions. The current measurement methods are two-color, electric contact, and differential pressure. The two-color liquid level gauge can only observe the liquid level with the naked eye without electrical signal output, and cannot be used online; the electric contact can only be measured intermittently, without continuous signal output, and it is easy to leak, and the safety is poor; the differential pressure temperature performance is not good, and the temperature and pressure Doesn't work when changing. Moreover, the above three methods a...

AI Technical Summary

Problems solved by technology

The two-color liquid level gauge can only observe the liquid level with the naked eye without electrical signal output, and cannot be used online; the electrical contact can only be measured intermittently, without continuous signal output, and it is easy to leak, and the safety is poor; the temperature performance of the differential pressure type is not good, and the temperature and pressure does not work when changing

Moreover, the above three methods are all contact measurements, and there are many disadvantages such as unstable operation, easy leakage, easy corrosion, low precision, and inability to close-loop work for liquid level measurement of high-parameter closed containers.

[0003] The γ-ray transverse measurement method is a non-contact measurement, which is suitable for fixed-point limit measurement. The continuous measurement must adopt the structure of a line source or a line detector. Theoretically, this method can be applied to the continuous measurement of the liquid level of a closed container, but it is difficult to realize Large size, high cost, low precision, great difficulties in protection and maintenance

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