Measurement device and measurement method for concentration of water mist

Abstract

The invention provides a measuring device and a measuring method for the concentration of water mist and relates to a water mist concentration measuring instrument, a water mist concentration calibrating device and a water mist concentration measuring method. The water mist concentration measuring instrument comprises a bracket (1), an optical transmitting unit (9), an optical receiving unit (3) and an airflow blowing device (6), wherein the optical transmitting unit (9) and the optical receiving unit (3) are mounted on the two sides of the bracket (1). The water mist concentration calibrating device comprises a box body (12) provided with a water mist generator (12); one side of the box body (12) is provided with a mist blowing fan (13) and the other side of the box body (12) is provided with a door leaf (11); the box body (12) is arranged on a pressure sensor (10); a pressure collector (14) is coupled with the pressure sensor (10). The measuring method comprises the following steps: preparing the water mist concentration measuring instrument and the water mist concentration calibrating device; measuring and establishing a relationship between a water mist concentration and scattering voltage under a corresponding depositing moment; placing the relationship into a single chip microcomputer control circuit; and mounting the water mist concentration measuring instrument into a real water mist environment to measure a water mist concentration value in real time.

Description

1. Technical field [0001] The invention relates to a device and a measurement method for measuring water mist concentration in a characterizing space (usually atmospheric space), specifically comprising a technically interrelated water mist concentration measuring instrument, a water mist concentration calibration device and a water mist concentration measurement method. 2. Background technology [0002] Water mist has been widely used in extinguishing various types of fires in electrical appliances, ships, and buildings. It has also been used and developed in the fields of oil and natural gas pipeline transportation and mine gas explosion prevention and suppression. Water mist concentration is one of the important parameters to characterize the characteristics of water mist in a space. At present, the measurement of water mist concentration adopts the traditional measuring cup method and weighing method. These methods have the following disadvantages: 1) they can only measu...

AI Technical Summary

Problems solved by technology

These methods have the following disadvantages: 1) can only measure the change of water mist concentration within a certain period of time, and cannot realize real-time measurement; 2) can only measure the total amount of water mist in a certain volume space, and cannot realize point measurement

In addition, after searching, there is currently no patent at home and abroad that uses optical methods to measure the concentration of water mist in space. The main reason is that it is difficult to obtain water mist particles with uniform sizes. At the same time, due to evaporation and collisions, the size and quality of water mist particles will also change at any time. Changes, there is no water mist concentration calibration method and device that can be used for reference

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