A liquid constant flow rate online analysis and monitoring device

Abstract

The invention discloses an on-line constant liquid flow velocity analyzing and monitoring device which comprises a constant flowing device, a measuring device and a water discharging tube which are serially connected with one another, wherein the top part of a constant flower shell in the constant flowing device is sealed; through holes are formed in the bottom of the constant flower shell; hollow tubular overflowing tubes are connected with the through holes in a sealing manner and are extended to the inside of the constant flower shell; and the bottoms of the overflowing tubes are communicated with a discharging tube. The on-line liquid constant flow velocity analyzing and monitoring device is simple in structure, enables the flow velocity of liquid flowing through a sensor to be constant, does not change along with the pressure of a pipeline, ensures that the change of ingredients in the fluid is objectively and accurately revealed through on-line detection data, prolongs the service life of the sensor and improves the measurement precision of the sensor.

Description

technical field [0001] The invention relates to a measuring device for analyzing liquid samples, in particular to a sample analyzing and measuring device suitable for liquid real-time on-line detection systems in industrial production. Background technique [0002] Fluid online component analysis technology is an emerging industry that has developed rapidly in the past ten years. Generally, people focus on technical problems such as non-electricity / electricity conversion, chemical reagents, sensor technology, and mathematical models. Under laboratory conditions, using existing on-line analysis Measuring devices can usually obtain satisfactory experimental results, but there will be some problems in applying the measuring devices in the laboratory to industrial sites, mainly because the sensors used in the instruments are easily affected by the flow rate of the measured fluid. Since the pipeline pressure at the application site changes randomly, the flow velocity passing thro...

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Problems solved by technology

However, manual adjustment of the needle valve under field conditions cannot follow random pressure changes, which may easily cause fluctuations in measurement data

Therefore, at present, a pressure reducing valve is often used to stably measure the pressure change on one side, but the measuring device is easily affected by the deposition of impurities in the water source, corrosion, and rust, which makes the pressure reducing valve easily invalid, and the pressure reducing valve can only be used in smooth liquid. It is impossible to ensure a constant flow rate of water outlet in a wide range of pressure changes, especially when the pressure is low, it is impossible to open the pressure reducing valve at all

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