SU436272A1 - MOISTURE OF HIGH-BODY SUBSTANCES - Google Patents

Description

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The invention is intended for use in the chemical, petrochemical, food, heat and energy and other industries and trasport.

Devices are known for measuring the moisture content of liquid and pasty substances, which use the principle of converting moisture into the vapor phase and measuring vapor pressure.

The known device consists of a cylindrical chamber C located in the center of its heater and a pressure gauge. This device has the following disadvantages: the chamber does not provide rapid evaporation of moisture from the samples; not equipped with input and output of sample residues; There are no means to transmit the pressure of hot vapor to the pressure gauge. All this reduces the accuracy of the measurement.

To improve the accuracy, simplify and ensure rapid measurement in the proposed moisture meter inside the evaporation chamber is placed tightly entering the screw-type. a liner, the chamber being connected to a pressure indicator by a hydraulic transmission.

The drawing shows the proposed moisture meter including a conversion chamber 1, a spiral insert 2, a sample inlet device 3, a pipeline 4 filled with liquid, a pressure meter 5, a capillary 6, a liquid 7, a heat stabilizer 8, a program-command device 9, an input channel 10 for air, a device 11 for evacuating residues of a slant and a thermostat 12. The moisture meter works as follows. The discrete sample of the test substance through the inlet device 3 enters the chamber 1, which is heated by the heat stabilizer 8 to a certain temperature (+ 140 ° C). The sample enters the liner 2 and flows along the trapezoidal spiral grooves in the form of a thin film into the collector part of chamber 1. The sample flow along the helical grooves of the heated liner provides rapid and reliable evaporation of all moisture from the sample. By selecting the number of grooves, the profile and their length, evaporation is achieved in a given humidity range for a given measurement duration. The pressure of the water vapor is sensed through the capillary 6 by the surface of the non-evaporating liquid 7 and is transmitted through a conduit 4 filled with the same liquid to the pressure gauge 5. Such a hydraulic transmission acts as a thermal insulator between heated water vapor and a pressure gauge.

After reading the result on the scale of the meter 5, the evacuation device 11 is reset, the compressed air entering the channel 10 is fed into the chamber 1 for purging for a certain time. In this position, the air blows through the chamber 1 and evacuates the remnants of the sample through the device 11. The duration of the purge and evacuation is determined by setting the response time of the program-command device 9. At the end of the purge, the chamber 1 is sealed again by the device 11.

Any self-sealing valve can be used as an insertion device.

The moisture meter has been tested on various oils and boiler fuels in both laboratory and industrial conditions with positive results.

Subject invention

HYBOOSTER hygrometer containing a conversion evaporation chamber,

a pressure meter, a time relay, an introductory device, a device for evacuating the remainder and a heater with a thermostat, characterized in that, in order to increase accuracy, simplify and ensure rapid measurement, a tightly fitting spiral insert is placed inside the evaporation chamber, the chamber being connected hydraulic pressure indicator.

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