Small buoy type water body area gamma radioactivity monitoring instrument

Abstract

The present invention belongs to the nuclear emergency radiation monitoring field and provides a small buoy type water body area gamma radioactivity monitoring instrument. The small buoy type water body area gamma radioactivity monitoring instrument includes a buoy body, a water body radioactivity activity concentration and typical nuclide monitoring device, an air absorption dose rate monitoring device, a radio modem and a lithium battery power supply device; the buoy body is made of a glass steel material; the top of a floating cylinder is provided with the air absorption dose rate monitoring device and the radio modem; the antenna of the radio modem is installed on the end cover of the buoy body; the lower end of the exterior of the floating cylinder is fixedly connected with the water body radioactivity activity concentration and typical nuclide monitoring device; a portion at the bottom of the floating cylinder, which is attached to the water body radioactivity activity concentration and typical nuclide monitoring device, is provided with a lead-bismuth alloy shielding counterweight and the lithium battery power supply device; and the water body radioactivity activity concentration and typical nuclide monitoring device and the air absorption dose rate monitoring device are both connected with the radio modem. With the small buoy type water body area gamma radioactivity monitoring instrument of the invention adopted, measuring accuracy and measuring range can be simultaneously guaranteed. The small buoy type water body area gamma radioactivity monitoring instrument has the advantages of stable operation, easiness in maintenance, small size and quick deployment capability.

Description

technical field [0001] The invention relates to the field of nuclear emergency radiation monitoring, in particular to a small-sized buoy-type gamma radiation monitor for water body areas, which can monitor water body radioactive activity concentration and air radioactivity level continuously for a long time in the case of nuclear emergency. Background technique [0002] Traditional water radioactivity monitoring methods are divided into laboratory sampling analysis measurement and large buoy body measurement. Laboratory sampling analysis and measurement are carried out in the laboratory by taking water and air samples from the water area to be tested. This measurement method has high accuracy, but the measuring instrument and equipment system is complicated and expensive. In the case of nuclear emergency, the level of environmental dose rate is high, and manual sampling cannot guarantee the radiation safety of personnel. [0003] For the measurement of large buoys, the radi...

AI Technical Summary

Problems solved by technology

In terms of spatial absorbed dose rate monitoring, the ionization chamber has the advantages of wide range and high measurement accuracy, but the large space occupied by the ionization chamber is not conducive to the miniaturization of equipment

Scintillator detectors have a limited measurement range and are only suitable for environmental-level gamma radiation monitoring, which does not meet the technical requirements for nuclear emergency monitoring

The measurement of large buoys is only suitable for fixed-point radioactivity monitoring in a certain area

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