Open type pH value online measurement and automatic cleaning device

Abstract

The invention discloses an open type pH value online measurement and automatic cleaning device, and belongs to the field of petrochemical engineering. The device comprises a sampling cavity and a wastewater cavity, a pH meter is arranged in the sampling cavity, and a cleaning device is arranged at the bottom of the sampling cavity and can clean the pH meter. The sampling cavity is connected with aproduction process water pipeline through a sampling pipe, an openable plugging device is arranged at a liquid outlet of the sampling cavity, and the sampling cavity is connected with the waste watercavity. A waste water outlet is formed at the bottom of the waste water cavity, and the sampling cavity and the waste water cavity are both open. According to the present invention, a series of functions of automatically sampling by using an open cup, measuring the pH value on line in real time under the 0normal pressure, automatically discharging wastewater and automatically cleaning and maintaining a pH electrode are realized, and the problems that in the pH value online monitoring process, a pH electrode is inaccurate in measurement in a pressure pipeline, and the bottle diameter is proneto being polluted and damaged, are solved.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and relates to an open-type automatic sampling measurement and pH electrode automatic cleaning device for the pH value of production process water, in particular to an open-type online pH value measurement and automatic cleaning device. Background technique [0002] pH value is an essential parameter that needs to be controlled in the production of petrochemical enterprises. The earliest pH measurement was to manually pick up samples from the site and take them back to the laboratory for measurement with a desktop pH meter. After the measurement, the measured value was manually uploaded to the In the enterprise database, it is provided to the relevant departments in the enterprise through the local area network. After each measurement, the pH electrode needs to be cleaned manually. With the development of science and technology, the pH value monitoring in the production process has develope...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to imitate the method of manual sampling to measure the pH value, and through program control, automatically take the sample and take it into an open open container, and automatically discharge the last measurement retention medium in the sampling tube at one time. Remove and isolate the fresh medium that flows over from the previous measurement and storage medium. The pH electrode is measured in an open container. After the measurement, the waste water is automatically drained, and the pH electrode is cleaned with clean water. After cleaning, the pH electrode is soaked in clean water. The pH electrode is only in contact with the measured medium during measurement, reducing the time of contamination and prolonging the service life

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