A high temperature and strong corrosion resistant sensor applied to radio frequency admittance level gauge

Abstract

The invention belongs to the technical field of measurement of a fluidized bed material level in uranium conversion production, and particularly relates to a high-temperature-resistance strong-corrosion-resistance sensor applied to a radio frequency admittance level indicator. The sensor is installed in a sensor sealing and locking bin on the radio frequency admittance level indicator through a thread, the inside of the sensor is of a structure connected in a casing pipe type, and is provided with a center connecting pipe, a second mica insulating pipe, a shielding layer connecting pipe, a first mica insulating pipe and an earth pole from inside to outside in sequence; a screw is arranged inside the sensor sealing and locking bin, and penetrates through the center of the sensor, is in rigid connection with a center feeler lever, and makes the earth pole, an earth pole sealing ring groove, a first graphite sealing mat, a first barite insulating pipe ring, a second graphite sealing mat, a shielding layer electrode, a third graphite sealing mat, a second barite insulating ring, a fourth graphite sealing mat and a center feeler lever sealing ring groove closely pressed together from top to bottom in sequence; the barite has high corrosion resistance to hydrofluoric acid, and can meet using requirements for fluidized bed material level measurement in the uranium conversion production.

Description

technical field [0001] The invention belongs to the technical field of fluidized bed material level measurement in uranium conversion production, and in particular relates to a high temperature and strong corrosion resistant sensor applied to a radio frequency admittance level gauge. Background technique [0002] The radio frequency admittance level detection technology is developed on the basis of the capacitive level gauge, which has the function of anti-hanging material and more accurate measurement. Since the RF admittance technology uses a measurement method in which the probe and insulating material are in direct contact with the measured medium, there are different requirements for the selection of the probe and insulating material in the face of different measured media and different testing environments. [0003] Usually the RF admittance level meter is used in low temperature, non-corrosive or weakly corrosive environment. Most of the probes are made of stainless ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a high-temperature and strong-corrosion-resistant sensor applied to radio frequency admittance level gauge. By selecting the insulating material of radio frequency admittance level gauge, a test prototype is developed to solve the problem of high reaction temperature. , hydrofluoric acid corrosion, etc., so that the radio frequency admittance level meter is used to measure the material level of the secondary bed in the hydrofluorination process system to meet the requirements of process operation

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